2f95704d0a
Before commit 49898d43 CoglPipeline would compare whether a pipeline
layer's texture is equal by fetching the underlying GL handle. I
changed that so that it would only compare the CoglHandles because
that commit removes the GL handle texture overrides and sliced
textures instead log the underlying primitive texture. However I
forgot that the primitives don't always use
_cogl_texture_foreach_sub_texture_in_region when the quad fits within
the single texture so it won't use a texture override. This meant that
atlas textures and sub textures get logged with the atlas handle so
the comparison still needs to be done using the GL handles. It might
be nice to add a CoglTexture virtual to get the underlying primitive
texture instead to avoid having the pipeline poke around with GL
handles.
5908 lines
191 KiB
C
5908 lines
191 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2008,2009,2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl.h"
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#include "cogl-debug.h"
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#include "cogl-internal.h"
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#include "cogl-context.h"
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#include "cogl-object.h"
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#include "cogl-pipeline-private.h"
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#include "cogl-pipeline-opengl-private.h"
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#include "cogl-texture-private.h"
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#include "cogl-blend-string.h"
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#include "cogl-journal-private.h"
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#include "cogl-color-private.h"
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#include "cogl-profile.h"
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#include <glib.h>
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#include <glib/gprintf.h>
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#include <string.h>
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typedef gboolean (*CoglPipelineStateComparitor) (CoglPipeline *authority0,
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CoglPipeline *authority1);
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static CoglPipelineLayer *_cogl_pipeline_layer_copy (CoglPipelineLayer *layer);
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static void _cogl_pipeline_free (CoglPipeline *tex);
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static void _cogl_pipeline_layer_free (CoglPipelineLayer *layer);
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static void _cogl_pipeline_add_layer_difference (CoglPipeline *pipeline,
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CoglPipelineLayer *layer,
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gboolean inc_n_layers);
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static void handle_automatic_blend_enable (CoglPipeline *pipeline,
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CoglPipelineState changes);
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static void recursively_free_layer_caches (CoglPipeline *pipeline);
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static gboolean _cogl_pipeline_is_weak (CoglPipeline *pipeline);
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const CoglPipelineBackend *_cogl_pipeline_backends[COGL_PIPELINE_N_BACKENDS];
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#ifdef COGL_PIPELINE_BACKEND_GLSL
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#include "cogl-pipeline-glsl-private.h"
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#endif
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#ifdef COGL_PIPELINE_BACKEND_ARBFP
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#include "cogl-pipeline-arbfp-private.h"
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#endif
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#ifdef COGL_PIPELINE_BACKEND_FIXED
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#include "cogl-pipeline-fixed-private.h"
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#endif
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COGL_OBJECT_DEFINE (Pipeline, pipeline);
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/* This type was made deprecated before the cogl_is_pipeline_layer
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function was ever exposed in the public headers so there's no need
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to make the cogl_is_pipeline_layer function public. We use INTERNAL
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so that the cogl_is_* function won't get defined */
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COGL_OBJECT_INTERNAL_DEFINE (PipelineLayer, pipeline_layer);
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GQuark
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_cogl_pipeline_error_quark (void)
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{
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return g_quark_from_static_string ("cogl-pipeline-error-quark");
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}
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static void
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_cogl_pipeline_node_init (CoglPipelineNode *node)
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{
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node->parent = NULL;
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node->has_children = FALSE;
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}
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static void
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_cogl_pipeline_node_set_parent_real (CoglPipelineNode *node,
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CoglPipelineNode *parent,
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CoglPipelineNodeUnparentVFunc unparent,
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gboolean take_strong_reference)
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{
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/* NB: the old parent may indirectly be keeping the new parent alive
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* so we have to ref the new parent before unrefing the old.
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*
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* Note: we take a reference here regardless of
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* take_strong_reference because weak children may need special
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* handling when the parent disposes itself which relies on a
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* consistent link to all weak nodes. Once the node is linked to its
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* parent then we remove the reference at the end if
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* take_strong_reference == FALSE. */
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cogl_object_ref (parent);
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if (node->parent)
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unparent (node);
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if (G_UNLIKELY (parent->has_children))
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parent->children = g_list_prepend (parent->children, node);
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else
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{
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parent->has_children = TRUE;
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parent->first_child = node;
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parent->children = NULL;
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}
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node->parent = parent;
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node->has_parent_reference = take_strong_reference;
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/* Now that there is a consistent parent->child link we can remove
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* the parent reference if no reference was requested. If it turns
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* out that the new parent was only being kept alive by the old
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* parent then it will be disposed of here. */
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if (!take_strong_reference)
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cogl_object_unref (parent);
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}
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static void
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_cogl_pipeline_node_unparent_real (CoglPipelineNode *node)
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{
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CoglPipelineNode *parent = node->parent;
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if (parent == NULL)
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return;
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g_return_if_fail (parent->has_children);
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if (parent->first_child == node)
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{
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if (parent->children)
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{
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parent->first_child = parent->children->data;
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parent->children =
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g_list_delete_link (parent->children, parent->children);
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}
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else
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parent->has_children = FALSE;
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}
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else
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parent->children = g_list_remove (parent->children, node);
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if (node->has_parent_reference)
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cogl_object_unref (parent);
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node->parent = NULL;
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}
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void
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_cogl_pipeline_node_foreach_child (CoglPipelineNode *node,
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CoglPipelineNodeChildCallback callback,
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void *user_data)
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{
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if (node->has_children)
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{
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callback (node->first_child, user_data);
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g_list_foreach (node->children, (GFunc)callback, user_data);
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}
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}
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/*
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* This initializes the first pipeline owned by the Cogl context. All
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* subsequently instantiated pipelines created via the cogl_pipeline_new()
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* API will initially be a copy of this pipeline.
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*
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* The default pipeline is the topmost ancester for all pipelines.
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*/
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void
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_cogl_pipeline_init_default_pipeline (void)
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{
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/* Create new - blank - pipeline */
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CoglPipeline *pipeline = g_slice_new0 (CoglPipeline);
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CoglPipelineBigState *big_state = g_slice_new0 (CoglPipelineBigState);
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CoglPipelineLightingState *lighting_state = &big_state->lighting_state;
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CoglPipelineAlphaFuncState *alpha_state = &big_state->alpha_state;
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CoglPipelineBlendState *blend_state = &big_state->blend_state;
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CoglPipelineDepthState *depth_state = &big_state->depth_state;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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/* Take this opportunity to setup the fragment processing backends... */
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#ifdef COGL_PIPELINE_BACKEND_GLSL
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_cogl_pipeline_backends[COGL_PIPELINE_BACKEND_GLSL] =
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&_cogl_pipeline_glsl_backend;
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#endif
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#ifdef COGL_PIPELINE_BACKEND_ARBFP
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_cogl_pipeline_backends[COGL_PIPELINE_BACKEND_ARBFP] =
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&_cogl_pipeline_arbfp_backend;
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#endif
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#ifdef COGL_PIPELINE_BACKEND_FIXED
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_cogl_pipeline_backends[COGL_PIPELINE_BACKEND_FIXED] =
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&_cogl_pipeline_fixed_backend;
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#endif
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_cogl_pipeline_node_init (COGL_PIPELINE_NODE (pipeline));
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pipeline->is_weak = FALSE;
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pipeline->journal_ref_count = 0;
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pipeline->backend = COGL_PIPELINE_BACKEND_UNDEFINED;
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pipeline->differences = COGL_PIPELINE_STATE_ALL_SPARSE;
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pipeline->real_blend_enable = FALSE;
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pipeline->blend_enable = COGL_PIPELINE_BLEND_ENABLE_AUTOMATIC;
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pipeline->layer_differences = NULL;
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pipeline->n_layers = 0;
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pipeline->big_state = big_state;
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pipeline->has_big_state = TRUE;
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pipeline->static_breadcrumb = "default pipeline";
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pipeline->has_static_breadcrumb = TRUE;
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pipeline->age = 0;
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/* Use the same defaults as the GL spec... */
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cogl_color_init_from_4ub (&pipeline->color, 0xff, 0xff, 0xff, 0xff);
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/* Use the same defaults as the GL spec... */
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lighting_state->ambient[0] = 0.2;
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lighting_state->ambient[1] = 0.2;
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lighting_state->ambient[2] = 0.2;
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lighting_state->ambient[3] = 1.0;
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lighting_state->diffuse[0] = 0.8;
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lighting_state->diffuse[1] = 0.8;
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lighting_state->diffuse[2] = 0.8;
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lighting_state->diffuse[3] = 1.0;
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lighting_state->specular[0] = 0;
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lighting_state->specular[1] = 0;
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lighting_state->specular[2] = 0;
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lighting_state->specular[3] = 1.0;
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lighting_state->emission[0] = 0;
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lighting_state->emission[1] = 0;
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lighting_state->emission[2] = 0;
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lighting_state->emission[3] = 1.0;
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lighting_state->shininess = 0.0f;
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/* Use the same defaults as the GL spec... */
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alpha_state->alpha_func = COGL_PIPELINE_ALPHA_FUNC_ALWAYS;
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alpha_state->alpha_func_reference = 0.0;
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/* Not the same as the GL default, but seems saner... */
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#ifndef HAVE_COGL_GLES
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blend_state->blend_equation_rgb = GL_FUNC_ADD;
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blend_state->blend_equation_alpha = GL_FUNC_ADD;
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blend_state->blend_src_factor_alpha = GL_ONE;
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blend_state->blend_dst_factor_alpha = GL_ONE_MINUS_SRC_ALPHA;
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cogl_color_init_from_4ub (&blend_state->blend_constant,
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0x00, 0x00, 0x00, 0x00);
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#endif
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blend_state->blend_src_factor_rgb = GL_ONE;
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blend_state->blend_dst_factor_rgb = GL_ONE_MINUS_SRC_ALPHA;
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big_state->user_program = COGL_INVALID_HANDLE;
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/* The same as the GL defaults */
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depth_state->depth_test_enabled = FALSE;
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depth_state->depth_test_function = COGL_DEPTH_TEST_FUNCTION_LESS;
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depth_state->depth_writing_enabled = TRUE;
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depth_state->depth_range_near = 0;
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depth_state->depth_range_far = 1;
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big_state->point_size = 1.0f;
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ctx->default_pipeline = _cogl_pipeline_object_new (pipeline);
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}
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static void
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_cogl_pipeline_unparent (CoglPipelineNode *pipeline)
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{
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/* Chain up */
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_cogl_pipeline_node_unparent_real (pipeline);
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}
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static gboolean
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recursively_free_layer_caches_cb (CoglPipelineNode *node,
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void *user_data)
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{
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recursively_free_layer_caches (COGL_PIPELINE (node));
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return TRUE;
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}
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/* This recursively frees the layers_cache of a pipeline and all of
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* its descendants.
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*
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* For instance if we change a pipelines ->layer_differences list
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* then that pipeline and all of its descendants may now have
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* incorrect layer caches. */
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static void
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recursively_free_layer_caches (CoglPipeline *pipeline)
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{
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/* Note: we maintain the invariable that if a pipeline already has a
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* dirty layers_cache then so do all of its descendants. */
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if (pipeline->layers_cache_dirty)
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return;
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if (G_UNLIKELY (pipeline->layers_cache != pipeline->short_layers_cache))
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g_slice_free1 (sizeof (CoglPipelineLayer *) * pipeline->n_layers,
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pipeline->layers_cache);
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pipeline->layers_cache_dirty = TRUE;
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_cogl_pipeline_node_foreach_child (COGL_PIPELINE_NODE (pipeline),
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recursively_free_layer_caches_cb,
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NULL);
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}
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static void
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_cogl_pipeline_set_parent (CoglPipeline *pipeline,
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CoglPipeline *parent,
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gboolean take_strong_reference)
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{
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/* Chain up */
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_cogl_pipeline_node_set_parent_real (COGL_PIPELINE_NODE (pipeline),
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COGL_PIPELINE_NODE (parent),
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_cogl_pipeline_unparent,
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take_strong_reference);
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/* Since we just changed the ancestry of the pipeline its cache of
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* layers could now be invalid so free it... */
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if (pipeline->differences & COGL_PIPELINE_STATE_LAYERS)
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recursively_free_layer_caches (pipeline);
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/* If the fragment processing backend is also caching state along
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* with the pipeline that depends on the pipeline's ancestry then it
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* may be notified here...
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*/
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if (pipeline->backend != COGL_PIPELINE_BACKEND_UNDEFINED &&
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_cogl_pipeline_backends[pipeline->backend]->pipeline_set_parent_notify)
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{
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const CoglPipelineBackend *backend =
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_cogl_pipeline_backends[pipeline->backend];
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backend->pipeline_set_parent_notify (pipeline);
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}
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}
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static void
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_cogl_pipeline_promote_weak_ancestors (CoglPipeline *strong)
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{
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CoglPipelineNode *n;
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g_return_if_fail (!strong->is_weak);
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for (n = COGL_PIPELINE_NODE (strong)->parent; n; n = n->parent)
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{
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CoglPipeline *pipeline = COGL_PIPELINE (n);
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cogl_object_ref (pipeline);
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if (!pipeline->is_weak)
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return;
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}
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}
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static void
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_cogl_pipeline_revert_weak_ancestors (CoglPipeline *strong)
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{
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CoglPipeline *parent = _cogl_pipeline_get_parent (strong);
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CoglPipelineNode *n;
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g_return_if_fail (!strong->is_weak);
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if (!parent || !parent->is_weak)
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return;
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for (n = COGL_PIPELINE_NODE (strong)->parent; n; n = n->parent)
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{
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CoglPipeline *pipeline = COGL_PIPELINE (n);
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cogl_object_unref (pipeline);
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if (!pipeline->is_weak)
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return;
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}
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}
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/* XXX: Always have an eye out for opportunities to lower the cost of
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* cogl_pipeline_copy. */
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static CoglPipeline *
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_cogl_pipeline_copy (CoglPipeline *src, gboolean is_weak)
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{
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CoglPipeline *pipeline = g_slice_new (CoglPipeline);
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_cogl_pipeline_node_init (COGL_PIPELINE_NODE (pipeline));
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pipeline->is_weak = is_weak;
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pipeline->journal_ref_count = 0;
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pipeline->differences = 0;
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pipeline->has_big_state = FALSE;
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/* NB: real_blend_enable isn't a sparse property, it's valid for
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* every pipeline node so we have fast access to it. */
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pipeline->real_blend_enable = src->real_blend_enable;
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/* XXX:
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* consider generalizing the idea of "cached" properties. These
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* would still have an authority like other sparse properties but
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* you wouldn't have to walk up the ancestry to find the authority
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* because the value would be cached directly in each pipeline.
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*/
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pipeline->layers_cache_dirty = TRUE;
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pipeline->deprecated_get_layers_list_dirty = TRUE;
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pipeline->backend = src->backend;
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pipeline->backend_priv_set_mask = 0;
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pipeline->has_static_breadcrumb = FALSE;
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pipeline->age = 0;
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_cogl_pipeline_set_parent (pipeline, src, !is_weak);
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/* The semantics for copying a weak pipeline are that we promote all
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* weak ancestors to temporarily become strong pipelines until the
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* copy is freed. */
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if (!is_weak)
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_cogl_pipeline_promote_weak_ancestors (pipeline);
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return _cogl_pipeline_object_new (pipeline);
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}
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CoglPipeline *
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cogl_pipeline_copy (CoglPipeline *src)
|
|
{
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return _cogl_pipeline_copy (src, FALSE);
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}
|
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|
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CoglPipeline *
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_cogl_pipeline_weak_copy (CoglPipeline *pipeline,
|
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CoglPipelineDestroyCallback callback,
|
|
void *user_data)
|
|
{
|
|
CoglPipeline *copy;
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|
CoglPipeline *copy_pipeline;
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copy = _cogl_pipeline_copy (pipeline, TRUE);
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copy_pipeline = COGL_PIPELINE (copy);
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copy_pipeline->destroy_callback = callback;
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copy_pipeline->destroy_data = user_data;
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return copy;
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}
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|
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CoglPipeline *
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cogl_pipeline_new (void)
|
|
{
|
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CoglPipeline *new;
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_COGL_GET_CONTEXT (ctx, NULL);
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|
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new = cogl_pipeline_copy (ctx->default_pipeline);
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_cogl_pipeline_set_static_breadcrumb (new, "new");
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return new;
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}
|
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|
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static void
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_cogl_pipeline_backend_free_priv (CoglPipeline *pipeline)
|
|
{
|
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if (pipeline->backend != COGL_PIPELINE_BACKEND_UNDEFINED &&
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_cogl_pipeline_backends[pipeline->backend]->free_priv)
|
|
{
|
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const CoglPipelineBackend *backend =
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_cogl_pipeline_backends[pipeline->backend];
|
|
backend->free_priv (pipeline);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
destroy_weak_children_cb (CoglPipelineNode *node,
|
|
void *user_data)
|
|
{
|
|
CoglPipeline *pipeline = COGL_PIPELINE (node);
|
|
|
|
if (_cogl_pipeline_is_weak (pipeline))
|
|
{
|
|
_cogl_pipeline_node_foreach_child (COGL_PIPELINE_NODE (pipeline),
|
|
destroy_weak_children_cb,
|
|
NULL);
|
|
|
|
pipeline->destroy_callback (pipeline, pipeline->destroy_data);
|
|
_cogl_pipeline_unparent (COGL_PIPELINE_NODE (pipeline));
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_free (CoglPipeline *pipeline)
|
|
{
|
|
if (!pipeline->is_weak)
|
|
_cogl_pipeline_revert_weak_ancestors (pipeline);
|
|
|
|
/* Weak pipelines don't take a reference on their parent */
|
|
_cogl_pipeline_node_foreach_child (COGL_PIPELINE_NODE (pipeline),
|
|
destroy_weak_children_cb,
|
|
NULL);
|
|
|
|
g_assert (!COGL_PIPELINE_NODE (pipeline)->has_children);
|
|
|
|
_cogl_pipeline_backend_free_priv (pipeline);
|
|
|
|
_cogl_pipeline_unparent (COGL_PIPELINE_NODE (pipeline));
|
|
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_USER_SHADER &&
|
|
pipeline->big_state->user_program)
|
|
cogl_handle_unref (pipeline->big_state->user_program);
|
|
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_NEEDS_BIG_STATE)
|
|
g_slice_free (CoglPipelineBigState, pipeline->big_state);
|
|
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_LAYERS)
|
|
{
|
|
g_list_foreach (pipeline->layer_differences,
|
|
(GFunc)cogl_object_unref, NULL);
|
|
g_list_free (pipeline->layer_differences);
|
|
}
|
|
|
|
g_slice_free (CoglPipeline, pipeline);
|
|
}
|
|
|
|
gboolean
|
|
_cogl_pipeline_get_real_blend_enabled (CoglPipeline *pipeline)
|
|
{
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
return pipeline->real_blend_enable;
|
|
}
|
|
|
|
inline CoglPipeline *
|
|
_cogl_pipeline_get_parent (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipelineNode *parent_node = COGL_PIPELINE_NODE (pipeline)->parent;
|
|
return COGL_PIPELINE (parent_node);
|
|
}
|
|
|
|
CoglPipeline *
|
|
_cogl_pipeline_get_authority (CoglPipeline *pipeline,
|
|
unsigned long difference)
|
|
{
|
|
CoglPipeline *authority = pipeline;
|
|
while (!(authority->differences & difference))
|
|
authority = _cogl_pipeline_get_parent (authority);
|
|
return authority;
|
|
}
|
|
|
|
/* XXX: Think twice before making this non static since it is used
|
|
* heavily and we expect the compiler to inline it...
|
|
*/
|
|
static CoglPipelineLayer *
|
|
_cogl_pipeline_layer_get_parent (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineNode *parent_node = COGL_PIPELINE_NODE (layer)->parent;
|
|
return COGL_PIPELINE_LAYER (parent_node);
|
|
}
|
|
|
|
CoglPipelineLayer *
|
|
_cogl_pipeline_layer_get_authority (CoglPipelineLayer *layer,
|
|
unsigned long difference)
|
|
{
|
|
CoglPipelineLayer *authority = layer;
|
|
while (!(authority->differences & difference))
|
|
authority = _cogl_pipeline_layer_get_parent (authority);
|
|
return authority;
|
|
}
|
|
|
|
int
|
|
_cogl_pipeline_layer_get_unit_index (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayer *authority =
|
|
_cogl_pipeline_layer_get_authority (layer, COGL_PIPELINE_LAYER_STATE_UNIT);
|
|
return authority->unit_index;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_update_layers_cache (CoglPipeline *pipeline)
|
|
{
|
|
/* Note: we assume this pipeline is a _LAYERS authority */
|
|
int n_layers;
|
|
CoglPipeline *current;
|
|
int layers_found;
|
|
|
|
if (G_LIKELY (!pipeline->layers_cache_dirty) ||
|
|
pipeline->n_layers == 0)
|
|
return;
|
|
|
|
pipeline->layers_cache_dirty = FALSE;
|
|
|
|
n_layers = pipeline->n_layers;
|
|
if (G_LIKELY (n_layers < G_N_ELEMENTS (pipeline->short_layers_cache)))
|
|
{
|
|
pipeline->layers_cache = pipeline->short_layers_cache;
|
|
memset (pipeline->layers_cache, 0,
|
|
sizeof (CoglPipelineLayer *) *
|
|
G_N_ELEMENTS (pipeline->short_layers_cache));
|
|
}
|
|
else
|
|
{
|
|
pipeline->layers_cache =
|
|
g_slice_alloc0 (sizeof (CoglPipelineLayer *) * n_layers);
|
|
}
|
|
|
|
/* Notes:
|
|
*
|
|
* Each pipeline doesn't have to contain a complete list of the layers
|
|
* it depends on, some of them are indirectly referenced through the
|
|
* pipeline's ancestors.
|
|
*
|
|
* pipeline->layer_differences only contains a list of layers that
|
|
* have changed in relation to its parent.
|
|
*
|
|
* pipeline->layer_differences is not maintained sorted, but it
|
|
* won't contain multiple layers corresponding to a particular
|
|
* ->unit_index.
|
|
*
|
|
* Some of the ancestor pipelines may reference layers with
|
|
* ->unit_index values >= n_layers so we ignore them.
|
|
*
|
|
* As we ascend through the ancestors we are searching for any
|
|
* CoglPipelineLayers corresponding to the texture ->unit_index
|
|
* values in the range [0,n_layers-1]. As soon as a pointer is found
|
|
* we ignore layers of further ancestors with the same ->unit_index
|
|
* values.
|
|
*/
|
|
|
|
layers_found = 0;
|
|
for (current = pipeline;
|
|
_cogl_pipeline_get_parent (current);
|
|
current = _cogl_pipeline_get_parent (current))
|
|
{
|
|
GList *l;
|
|
|
|
if (!(current->differences & COGL_PIPELINE_STATE_LAYERS))
|
|
continue;
|
|
|
|
for (l = current->layer_differences; l; l = l->next)
|
|
{
|
|
CoglPipelineLayer *layer = l->data;
|
|
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
|
|
|
|
if (unit_index < n_layers && !pipeline->layers_cache[unit_index])
|
|
{
|
|
pipeline->layers_cache[unit_index] = layer;
|
|
layers_found++;
|
|
if (layers_found == n_layers)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
g_warn_if_reached ();
|
|
}
|
|
|
|
/* XXX: Be carefull when using this API that the callback given doesn't result
|
|
* in the layer cache being invalidated during the iteration! */
|
|
void
|
|
_cogl_pipeline_foreach_layer_internal (CoglPipeline *pipeline,
|
|
CoglPipelineInternalLayerCallback callback,
|
|
void *user_data)
|
|
{
|
|
CoglPipeline *authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
int n_layers;
|
|
int i;
|
|
gboolean cont;
|
|
|
|
n_layers = authority->n_layers;
|
|
if (n_layers == 0)
|
|
return;
|
|
|
|
_cogl_pipeline_update_layers_cache (authority);
|
|
|
|
for (i = 0, cont = TRUE; i < n_layers && cont == TRUE; i++)
|
|
{
|
|
g_return_if_fail (authority->layers_cache_dirty == FALSE);
|
|
cont = callback (authority->layers_cache[i], user_data);
|
|
}
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int i;
|
|
int *indices;
|
|
} AppendLayerIndexState;
|
|
|
|
static gboolean
|
|
append_layer_index_cb (CoglPipelineLayer *layer,
|
|
void *user_data)
|
|
{
|
|
AppendLayerIndexState *state = user_data;
|
|
state->indices[state->i++] = layer->index;
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_foreach_layer (CoglPipeline *pipeline,
|
|
CoglPipelineLayerCallback callback,
|
|
void *user_data)
|
|
{
|
|
CoglPipeline *authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
AppendLayerIndexState state;
|
|
gboolean cont;
|
|
int i;
|
|
|
|
/* XXX: We don't know what the user is going to want to do to the layers
|
|
* but any modification of layers can result in the layer graph changing
|
|
* which could confuse _cogl_pipeline_foreach_layer_internal(). We first
|
|
* get a list of layer indices which will remain valid so long as the
|
|
* user doesn't remove layers. */
|
|
|
|
state.i = 0;
|
|
state.indices = g_alloca (authority->n_layers * sizeof (int));
|
|
|
|
_cogl_pipeline_foreach_layer_internal (pipeline,
|
|
append_layer_index_cb,
|
|
&state);
|
|
|
|
for (i = 0, cont = TRUE; i < authority->n_layers && cont; i++)
|
|
cont = callback (pipeline, state.indices[i], user_data);
|
|
}
|
|
|
|
static gboolean
|
|
layer_has_alpha_cb (CoglPipelineLayer *layer, void *data)
|
|
{
|
|
CoglPipelineLayer *combine_authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE);
|
|
CoglPipelineLayerBigState *big_state = combine_authority->big_state;
|
|
CoglPipelineLayer *tex_authority;
|
|
gboolean *has_alpha = data;
|
|
|
|
/* has_alpha maintains the alpha status for the GL_PREVIOUS layer */
|
|
|
|
/* For anything but the default texture combine we currently just
|
|
* assume it may result in an alpha value < 1
|
|
*
|
|
* FIXME: we could do better than this. */
|
|
if (big_state->texture_combine_alpha_func != GL_MODULATE ||
|
|
big_state->texture_combine_alpha_src[0] != GL_PREVIOUS ||
|
|
big_state->texture_combine_alpha_op[0] != GL_SRC_ALPHA ||
|
|
big_state->texture_combine_alpha_src[0] != GL_TEXTURE ||
|
|
big_state->texture_combine_alpha_op[0] != GL_SRC_ALPHA)
|
|
{
|
|
*has_alpha = TRUE;
|
|
/* return FALSE to stop iterating layers... */
|
|
return FALSE;
|
|
}
|
|
|
|
/* NB: A layer may have a combine mode set on it but not yet
|
|
* have an associated texture which would mean we'd fallback
|
|
* to the default texture which doesn't have an alpha component
|
|
*/
|
|
tex_authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_TEXTURE);
|
|
if (tex_authority->texture &&
|
|
cogl_texture_get_format (tex_authority->texture) & COGL_A_BIT)
|
|
{
|
|
*has_alpha = TRUE;
|
|
/* return FALSE to stop iterating layers... */
|
|
return FALSE;
|
|
}
|
|
|
|
*has_alpha = FALSE;
|
|
/* return FALSE to continue iterating layers... */
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglPipeline *
|
|
_cogl_pipeline_get_user_program (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), NULL);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_USER_SHADER);
|
|
|
|
return authority->big_state->user_program;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_needs_blending_enabled (CoglPipeline *pipeline,
|
|
unsigned long changes,
|
|
const CoglColor *override_color)
|
|
{
|
|
CoglPipeline *enable_authority;
|
|
CoglPipeline *blend_authority;
|
|
CoglPipelineBlendState *blend_state;
|
|
CoglPipelineBlendEnable enabled;
|
|
unsigned long other_state;
|
|
|
|
if (G_UNLIKELY (cogl_debug_flags & COGL_DEBUG_DISABLE_BLENDING))
|
|
return FALSE;
|
|
|
|
enable_authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_BLEND_ENABLE);
|
|
|
|
enabled = enable_authority->blend_enable;
|
|
if (enabled != COGL_PIPELINE_BLEND_ENABLE_AUTOMATIC)
|
|
return enabled == COGL_PIPELINE_BLEND_ENABLE_ENABLED ? TRUE : FALSE;
|
|
|
|
blend_authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_BLEND);
|
|
|
|
blend_state = &blend_authority->big_state->blend_state;
|
|
|
|
/* We are trying to identify awkward cases that are equivalent to
|
|
* blending being disable, where the output is simply GL_SRC_COLOR.
|
|
*
|
|
* Note: we assume that all OpenGL drivers will identify the simple
|
|
* case of ADD (ONE, ZERO) as equivalent to blending being disabled.
|
|
*
|
|
* We should update this when we add support for more blend
|
|
* functions...
|
|
*/
|
|
|
|
#ifndef HAVE_COGL_GLES
|
|
/* GLES 1 can't change the function or have separate alpha factors */
|
|
if (blend_state->blend_equation_rgb != GL_FUNC_ADD ||
|
|
blend_state->blend_equation_alpha != GL_FUNC_ADD)
|
|
return TRUE;
|
|
|
|
if (blend_state->blend_src_factor_alpha != GL_ONE ||
|
|
blend_state->blend_dst_factor_alpha != GL_ONE_MINUS_SRC_ALPHA)
|
|
return TRUE;
|
|
#endif
|
|
|
|
if (blend_state->blend_src_factor_rgb != GL_ONE ||
|
|
blend_state->blend_dst_factor_rgb != GL_ONE_MINUS_SRC_ALPHA)
|
|
return TRUE;
|
|
|
|
/* Given the above constraints, it's now a case of finding any
|
|
* SRC_ALPHA that != 1 */
|
|
|
|
/* In the case of a layer state change we need to check everything
|
|
* else first since they contribute to the has_alpha status of the
|
|
* GL_PREVIOUS layer. */
|
|
if (changes & COGL_PIPELINE_STATE_LAYERS)
|
|
changes = COGL_PIPELINE_STATE_AFFECTS_BLENDING;
|
|
|
|
if ((override_color && cogl_color_get_alpha_byte (override_color) != 0xff))
|
|
return TRUE;
|
|
|
|
if (changes & COGL_PIPELINE_STATE_COLOR)
|
|
{
|
|
CoglColor tmp;
|
|
cogl_pipeline_get_color (pipeline, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
}
|
|
|
|
if (changes & COGL_PIPELINE_STATE_USER_SHADER)
|
|
{
|
|
/* We can't make any assumptions about the alpha channel if the user
|
|
* is using an unknown fragment shader.
|
|
*
|
|
* TODO: check that it isn't just a vertex shader!
|
|
*/
|
|
if (_cogl_pipeline_get_user_program (pipeline) != COGL_INVALID_HANDLE)
|
|
return TRUE;
|
|
}
|
|
|
|
/* XXX: we should only need to look at these if lighting is enabled
|
|
*/
|
|
if (changes & COGL_PIPELINE_STATE_LIGHTING)
|
|
{
|
|
/* XXX: This stuff is showing up in sysprof reports which is
|
|
* silly because lighting isn't currently actually supported
|
|
* by Cogl except for these token properties. When we actually
|
|
* expose lighting support we can avoid these checks when
|
|
* lighting is disabled. */
|
|
#if 0
|
|
CoglColor tmp;
|
|
cogl_pipeline_get_ambient (pipeline, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
cogl_pipeline_get_diffuse (pipeline, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
cogl_pipeline_get_specular (pipeline, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
cogl_pipeline_get_emission (pipeline, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
#endif
|
|
}
|
|
|
|
if (changes & COGL_PIPELINE_STATE_LAYERS)
|
|
{
|
|
/* has_alpha tracks the alpha status of the GL_PREVIOUS layer.
|
|
* To start with that's defined by the pipeline color which
|
|
* must be fully opaque if we got this far. */
|
|
gboolean has_alpha = FALSE;
|
|
_cogl_pipeline_foreach_layer_internal (pipeline,
|
|
layer_has_alpha_cb,
|
|
&has_alpha);
|
|
if (has_alpha)
|
|
return TRUE;
|
|
}
|
|
else
|
|
{
|
|
/* In this case we have so far only checked the property that
|
|
* has been changed so we now need to check all the other
|
|
* properties too. */
|
|
other_state = COGL_PIPELINE_STATE_AFFECTS_BLENDING & ~changes;
|
|
if (other_state &&
|
|
_cogl_pipeline_needs_blending_enabled (pipeline,
|
|
other_state,
|
|
NULL))
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_set_backend (CoglPipeline *pipeline, int backend)
|
|
{
|
|
_cogl_pipeline_backend_free_priv (pipeline);
|
|
pipeline->backend = backend;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_copy_differences (CoglPipeline *dest,
|
|
CoglPipeline *src,
|
|
unsigned long differences)
|
|
{
|
|
CoglPipelineBigState *big_state;
|
|
|
|
if (differences & COGL_PIPELINE_STATE_COLOR)
|
|
dest->color = src->color;
|
|
|
|
if (differences & COGL_PIPELINE_STATE_BLEND_ENABLE)
|
|
dest->blend_enable = src->blend_enable;
|
|
|
|
if (differences & COGL_PIPELINE_STATE_LAYERS)
|
|
{
|
|
GList *l;
|
|
|
|
if (dest->differences & COGL_PIPELINE_STATE_LAYERS &&
|
|
dest->layer_differences)
|
|
{
|
|
g_list_foreach (dest->layer_differences,
|
|
(GFunc)cogl_object_unref,
|
|
NULL);
|
|
g_list_free (dest->layer_differences);
|
|
}
|
|
|
|
for (l = src->layer_differences; l; l = l->next)
|
|
{
|
|
/* NB: a layer can't have more than one ->owner so we can't
|
|
* simply take a references on each of the original
|
|
* layer_differences, we have to derive new layers from the
|
|
* originals instead. */
|
|
CoglPipelineLayer *copy = _cogl_pipeline_layer_copy (l->data);
|
|
_cogl_pipeline_add_layer_difference (dest, copy, FALSE);
|
|
cogl_object_unref (copy);
|
|
}
|
|
|
|
/* Note: we initialize n_layers after adding the layer differences
|
|
* since the act of adding the layers will initialize n_layers to 0
|
|
* because dest isn't initially a STATE_LAYERS authority. */
|
|
dest->n_layers = src->n_layers;
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_STATE_NEEDS_BIG_STATE)
|
|
{
|
|
if (!dest->has_big_state)
|
|
{
|
|
dest->big_state = g_slice_new (CoglPipelineBigState);
|
|
dest->has_big_state = TRUE;
|
|
}
|
|
big_state = dest->big_state;
|
|
}
|
|
else
|
|
goto check_for_blending_change;
|
|
|
|
if (differences & COGL_PIPELINE_STATE_LIGHTING)
|
|
{
|
|
memcpy (&big_state->lighting_state,
|
|
&src->big_state->lighting_state,
|
|
sizeof (CoglPipelineLightingState));
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_STATE_ALPHA_FUNC)
|
|
big_state->alpha_state.alpha_func =
|
|
src->big_state->alpha_state.alpha_func;
|
|
|
|
if (differences & COGL_PIPELINE_STATE_ALPHA_FUNC_REFERENCE)
|
|
big_state->alpha_state.alpha_func_reference =
|
|
src->big_state->alpha_state.alpha_func_reference;
|
|
|
|
if (differences & COGL_PIPELINE_STATE_BLEND)
|
|
{
|
|
memcpy (&big_state->blend_state,
|
|
&src->big_state->blend_state,
|
|
sizeof (CoglPipelineBlendState));
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_STATE_USER_SHADER)
|
|
{
|
|
if (src->big_state->user_program)
|
|
big_state->user_program =
|
|
cogl_handle_ref (src->big_state->user_program);
|
|
else
|
|
big_state->user_program = COGL_INVALID_HANDLE;
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_STATE_DEPTH)
|
|
{
|
|
memcpy (&big_state->depth_state,
|
|
&src->big_state->depth_state,
|
|
sizeof (CoglPipelineDepthState));
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_STATE_FOG)
|
|
{
|
|
memcpy (&big_state->fog_state,
|
|
&src->big_state->fog_state,
|
|
sizeof (CoglPipelineFogState));
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_STATE_POINT_SIZE)
|
|
big_state->point_size = src->big_state->point_size;
|
|
|
|
/* XXX: we shouldn't bother doing this in most cases since
|
|
* _copy_differences is typically used to initialize pipeline state
|
|
* by copying it from the current authority, so it's not actually
|
|
* *changing* anything.
|
|
*/
|
|
check_for_blending_change:
|
|
if (differences & COGL_PIPELINE_STATE_AFFECTS_BLENDING)
|
|
handle_automatic_blend_enable (dest, differences);
|
|
|
|
dest->differences |= differences;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_initialize_sparse_state (CoglPipeline *dest,
|
|
CoglPipeline *src,
|
|
CoglPipelineState state)
|
|
{
|
|
if (dest == src)
|
|
return;
|
|
|
|
g_return_if_fail (state & COGL_PIPELINE_STATE_ALL_SPARSE);
|
|
|
|
if (state != COGL_PIPELINE_STATE_LAYERS)
|
|
_cogl_pipeline_copy_differences (dest, src, state);
|
|
else
|
|
{
|
|
dest->n_layers = src->n_layers;
|
|
dest->layer_differences = NULL;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
check_if_strong_cb (CoglPipelineNode *node, void *user_data)
|
|
{
|
|
CoglPipeline *pipeline = COGL_PIPELINE (node);
|
|
gboolean *has_strong_child = user_data;
|
|
|
|
if (!_cogl_pipeline_is_weak (pipeline))
|
|
{
|
|
*has_strong_child = TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
has_strong_children (CoglPipeline *pipeline)
|
|
{
|
|
gboolean has_strong_child = FALSE;
|
|
_cogl_pipeline_node_foreach_child (COGL_PIPELINE_NODE (pipeline),
|
|
check_if_strong_cb,
|
|
&has_strong_child);
|
|
return has_strong_child;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_is_weak (CoglPipeline *pipeline)
|
|
{
|
|
if (pipeline->is_weak && !has_strong_children (pipeline))
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
reparent_children_cb (CoglPipelineNode *node,
|
|
void *user_data)
|
|
{
|
|
CoglPipeline *pipeline = COGL_PIPELINE (node);
|
|
CoglPipeline *parent = user_data;
|
|
|
|
_cogl_pipeline_set_parent (pipeline, parent, TRUE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_pre_change_notify (CoglPipeline *pipeline,
|
|
CoglPipelineState change,
|
|
const CoglColor *new_color,
|
|
gboolean from_layer_change)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
/* If primitives have been logged in the journal referencing the
|
|
* current state of this pipeline we need to flush the journal
|
|
* before we can modify it... */
|
|
if (pipeline->journal_ref_count)
|
|
{
|
|
gboolean skip_journal_flush = FALSE;
|
|
|
|
/* XXX: We don't usually need to flush the journal just due to
|
|
* color changes since pipeline colors are logged in the
|
|
* journal's vertex buffer. The exception is when the change in
|
|
* color enables or disables the need for blending. */
|
|
if (change == COGL_PIPELINE_STATE_COLOR)
|
|
{
|
|
gboolean will_need_blending =
|
|
_cogl_pipeline_needs_blending_enabled (pipeline,
|
|
change,
|
|
new_color);
|
|
gboolean blend_enable = pipeline->real_blend_enable ? TRUE : FALSE;
|
|
|
|
if (will_need_blending == blend_enable)
|
|
skip_journal_flush = TRUE;
|
|
}
|
|
|
|
if (!skip_journal_flush)
|
|
_cogl_journal_flush ();
|
|
}
|
|
|
|
/* The fixed function backend has no private state and can't
|
|
* do anything special to handle small pipeline changes so we may as
|
|
* well try to find a better backend whenever the pipeline changes.
|
|
*
|
|
* The programmable backends may be able to cache a lot of the code
|
|
* they generate and only need to update a small section of that
|
|
* code in response to a pipeline change therefore we don't want to
|
|
* try searching for another backend when the pipeline changes.
|
|
*/
|
|
#ifdef COGL_PIPELINE_BACKEND_FIXED
|
|
if (pipeline->backend == COGL_PIPELINE_BACKEND_FIXED)
|
|
_cogl_pipeline_set_backend (pipeline, COGL_PIPELINE_BACKEND_UNDEFINED);
|
|
#endif
|
|
|
|
if (pipeline->backend != COGL_PIPELINE_BACKEND_UNDEFINED &&
|
|
_cogl_pipeline_backends[pipeline->backend]->pipeline_pre_change_notify)
|
|
{
|
|
const CoglPipelineBackend *backend =
|
|
_cogl_pipeline_backends[pipeline->backend];
|
|
|
|
/* To simplify things for the backends we are careful about how
|
|
* we report STATE_LAYERS changes.
|
|
*
|
|
* All STATE_LAYERS changes with the exception of ->n_layers
|
|
* will also result in layer_pre_change_notifications. For
|
|
* backends that perform code generation for fragment processing
|
|
* they typically need to understand the details of how layers
|
|
* get changed to determine if they need to repeat codegen. It
|
|
* doesn't help them to report a pipeline STATE_LAYERS change
|
|
* for all layer changes since it's so broad, they really need
|
|
* to wait for the layer change to be notified. What does help
|
|
* though is to report a STATE_LAYERS change for a change in
|
|
* ->n_layers because they typically do need to repeat codegen
|
|
* in that case.
|
|
*
|
|
* This just ensures backends only get a single pipeline or
|
|
* layer pre-change notification for any particular change.
|
|
*/
|
|
if (!from_layer_change)
|
|
backend->pipeline_pre_change_notify (pipeline, change, new_color);
|
|
}
|
|
|
|
/* There may be an arbitrary tree of descendants of this pipeline;
|
|
* any of which may indirectly depend on this pipeline as the
|
|
* authority for some set of properties. (Meaning for example that
|
|
* one of its descendants derives its color or blending state from
|
|
* this pipeline.)
|
|
*
|
|
* We can't modify any property that this pipeline is the authority
|
|
* for unless we create another pipeline to take its place first and
|
|
* make sure descendants reference this new pipeline instead.
|
|
*/
|
|
|
|
/* The simplest descendants to handle are weak pipelines; we simply
|
|
* destroy them if we are modifying a pipeline they depend on. This
|
|
* means weak pipelines never cause us to do a copy-on-write. */
|
|
_cogl_pipeline_node_foreach_child (COGL_PIPELINE_NODE (pipeline),
|
|
destroy_weak_children_cb,
|
|
NULL);
|
|
|
|
/* If there are still children remaining though we'll need to
|
|
* perform a copy-on-write and reparent the dependants as children
|
|
* of the copy. */
|
|
if (COGL_PIPELINE_NODE (pipeline)->has_children)
|
|
{
|
|
CoglPipeline *new_authority;
|
|
|
|
COGL_STATIC_COUNTER (pipeline_copy_on_write_counter,
|
|
"pipeline copy on write counter",
|
|
"Increments each time a pipeline "
|
|
"must be copied to allow modification",
|
|
0 /* no application private data */);
|
|
|
|
COGL_COUNTER_INC (_cogl_uprof_context, pipeline_copy_on_write_counter);
|
|
|
|
new_authority =
|
|
cogl_pipeline_copy (_cogl_pipeline_get_parent (pipeline));
|
|
_cogl_pipeline_set_static_breadcrumb (new_authority,
|
|
"pre_change_notify:copy-on-write");
|
|
|
|
/* We could explicitly walk the descendants, OR together the set
|
|
* of differences that we determine this pipeline is the
|
|
* authority on and only copy those differences copied across.
|
|
*
|
|
* Or, if we don't explicitly walk the descendants we at least
|
|
* know that pipeline->differences represents the largest set of
|
|
* differences that this pipeline could possibly be an authority
|
|
* on.
|
|
*
|
|
* We do the later just because it's simplest, but we might need
|
|
* to come back to this later...
|
|
*/
|
|
_cogl_pipeline_copy_differences (new_authority, pipeline,
|
|
pipeline->differences);
|
|
|
|
/* Reparent the dependants of pipeline to be children of
|
|
* new_authority instead... */
|
|
_cogl_pipeline_node_foreach_child (COGL_PIPELINE_NODE (pipeline),
|
|
reparent_children_cb,
|
|
new_authority);
|
|
|
|
/* The children will keep the new authority alive so drop the
|
|
* reference we got when copying... */
|
|
cogl_object_unref (new_authority);
|
|
}
|
|
|
|
/* At this point we know we have a pipeline with no strong
|
|
* dependants (though we may have some weak children) so we are now
|
|
* free to modify the pipeline. */
|
|
|
|
pipeline->age++;
|
|
|
|
/* If changing a sparse property and if the pipeline isn't already an
|
|
* authority for the state group being modified then we need to
|
|
* initialize the corresponding state. */
|
|
if (change & COGL_PIPELINE_STATE_ALL_SPARSE &&
|
|
!(pipeline->differences & change))
|
|
{
|
|
authority = _cogl_pipeline_get_authority (pipeline, change);
|
|
_cogl_pipeline_initialize_sparse_state (pipeline, authority, change);
|
|
}
|
|
|
|
/* Each pipeline has a sorted cache of the layers it depends on
|
|
* which will need updating via _cogl_pipeline_update_layers_cache
|
|
* if a pipeline's layers are changed. */
|
|
if (change == COGL_PIPELINE_STATE_LAYERS)
|
|
recursively_free_layer_caches (pipeline);
|
|
|
|
/* If the pipeline being changed is the same as the last pipeline we
|
|
* flushed then we keep a track of the changes so we can try to
|
|
* minimize redundant OpenGL calls if the same pipeline is flushed
|
|
* again.
|
|
*/
|
|
if (ctx->current_pipeline == pipeline)
|
|
ctx->current_pipeline_changes_since_flush |= change;
|
|
}
|
|
|
|
|
|
static void
|
|
_cogl_pipeline_add_layer_difference (CoglPipeline *pipeline,
|
|
CoglPipelineLayer *layer,
|
|
gboolean inc_n_layers)
|
|
{
|
|
g_return_if_fail (layer->owner == NULL);
|
|
|
|
layer->owner = pipeline;
|
|
cogl_object_ref (layer);
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline,
|
|
COGL_PIPELINE_STATE_LAYERS,
|
|
NULL,
|
|
FALSE);
|
|
|
|
pipeline->differences |= COGL_PIPELINE_STATE_LAYERS;
|
|
|
|
pipeline->layer_differences =
|
|
g_list_prepend (pipeline->layer_differences, layer);
|
|
|
|
if (inc_n_layers)
|
|
pipeline->n_layers++;
|
|
}
|
|
|
|
/* NB: If you are calling this it's your responsibility to have
|
|
* already called:
|
|
* _cogl_pipeline_pre_change_notify (m, _CHANGE_LAYERS, NULL);
|
|
*/
|
|
static void
|
|
_cogl_pipeline_remove_layer_difference (CoglPipeline *pipeline,
|
|
CoglPipelineLayer *layer,
|
|
gboolean dec_n_layers)
|
|
{
|
|
g_return_if_fail (layer->owner == pipeline);
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline,
|
|
COGL_PIPELINE_STATE_LAYERS,
|
|
NULL,
|
|
FALSE);
|
|
|
|
layer->owner = NULL;
|
|
cogl_object_unref (layer);
|
|
|
|
pipeline->differences |= COGL_PIPELINE_STATE_LAYERS;
|
|
|
|
pipeline->layer_differences =
|
|
g_list_remove (pipeline->layer_differences, layer);
|
|
|
|
if (dec_n_layers)
|
|
pipeline->n_layers--;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_try_reverting_layers_authority (CoglPipeline *authority,
|
|
CoglPipeline *old_authority)
|
|
{
|
|
if (authority->layer_differences == NULL &&
|
|
_cogl_pipeline_get_parent (authority))
|
|
{
|
|
/* If the previous _STATE_LAYERS authority has the same
|
|
* ->n_layers then we can revert to that being the authority
|
|
* again. */
|
|
if (!old_authority)
|
|
{
|
|
old_authority =
|
|
_cogl_pipeline_get_authority (_cogl_pipeline_get_parent (authority),
|
|
COGL_PIPELINE_STATE_LAYERS);
|
|
}
|
|
|
|
if (old_authority->n_layers == authority->n_layers)
|
|
authority->differences &= ~COGL_PIPELINE_STATE_LAYERS;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
handle_automatic_blend_enable (CoglPipeline *pipeline,
|
|
CoglPipelineState change)
|
|
{
|
|
gboolean blend_enable =
|
|
_cogl_pipeline_needs_blending_enabled (pipeline, change, NULL);
|
|
|
|
if (blend_enable != pipeline->real_blend_enable)
|
|
{
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be
|
|
* modified.
|
|
* - If the pipeline isn't currently an authority for the state
|
|
* being changed, then initialize that state from the current
|
|
* authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline,
|
|
COGL_PIPELINE_STATE_REAL_BLEND_ENABLE,
|
|
NULL,
|
|
FALSE);
|
|
pipeline->real_blend_enable = blend_enable;
|
|
}
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int keep_n;
|
|
int current_pos;
|
|
gboolean needs_pruning;
|
|
int first_index_to_prune;
|
|
} CoglPipelinePruneLayersInfo;
|
|
|
|
static gboolean
|
|
update_prune_layers_info_cb (CoglPipelineLayer *layer, void *user_data)
|
|
{
|
|
CoglPipelinePruneLayersInfo *state = user_data;
|
|
|
|
if (state->current_pos == state->keep_n)
|
|
{
|
|
state->needs_pruning = TRUE;
|
|
state->first_index_to_prune = layer->index;
|
|
return FALSE;
|
|
}
|
|
state->current_pos++;
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_prune_to_n_layers (CoglPipeline *pipeline, int n)
|
|
{
|
|
CoglPipelinePruneLayersInfo state;
|
|
gboolean notified_change = TRUE;
|
|
GList *l;
|
|
GList *next;
|
|
|
|
state.keep_n = n;
|
|
state.current_pos = 0;
|
|
state.needs_pruning = FALSE;
|
|
_cogl_pipeline_foreach_layer_internal (pipeline,
|
|
update_prune_layers_info_cb,
|
|
&state);
|
|
|
|
pipeline->n_layers = n;
|
|
|
|
if (!state.needs_pruning)
|
|
return;
|
|
|
|
if (!(pipeline->differences & COGL_PIPELINE_STATE_LAYERS))
|
|
return;
|
|
|
|
/* It's possible that this pipeline owns some of the layers being
|
|
* discarded, so we'll need to unlink them... */
|
|
for (l = pipeline->layer_differences; l; l = next)
|
|
{
|
|
CoglPipelineLayer *layer = l->data;
|
|
next = l->next; /* we're modifying the list we're iterating */
|
|
|
|
if (layer->index > state.first_index_to_prune)
|
|
{
|
|
if (!notified_change)
|
|
{
|
|
/* - Flush journal primitives referencing the current
|
|
* state.
|
|
* - Make sure the pipeline has no dependants so it may
|
|
* be modified.
|
|
* - If the pipeline isn't currently an authority for
|
|
* the state being changed, then initialize that state
|
|
* from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline,
|
|
COGL_PIPELINE_STATE_LAYERS,
|
|
NULL,
|
|
FALSE);
|
|
notified_change = TRUE;
|
|
}
|
|
|
|
pipeline->layer_differences =
|
|
g_list_delete_link (pipeline->layer_differences, l);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_backend_layer_change_notify (CoglPipeline *owner,
|
|
CoglPipelineLayer *layer,
|
|
CoglPipelineLayerState change)
|
|
{
|
|
/* NB: Although layers can have private state associated with them
|
|
* by multiple backends we know that a layer can't be *changed* if
|
|
* it has multiple dependants so if we reach here we know we only
|
|
* have a single owner and can only be associated with a single
|
|
* backend that needs to be notified of the layer change...
|
|
*/
|
|
if (owner->backend != COGL_PIPELINE_BACKEND_UNDEFINED &&
|
|
_cogl_pipeline_backends[owner->backend]->layer_pre_change_notify)
|
|
{
|
|
const CoglPipelineBackend *backend =
|
|
_cogl_pipeline_backends[owner->backend];
|
|
backend->layer_pre_change_notify (owner, layer, change);
|
|
}
|
|
}
|
|
|
|
unsigned int
|
|
_cogl_get_n_args_for_combine_func (GLint func)
|
|
{
|
|
switch (func)
|
|
{
|
|
case GL_REPLACE:
|
|
return 1;
|
|
case GL_MODULATE:
|
|
case GL_ADD:
|
|
case GL_ADD_SIGNED:
|
|
case GL_SUBTRACT:
|
|
case GL_DOT3_RGB:
|
|
case GL_DOT3_RGBA:
|
|
return 2;
|
|
case GL_INTERPOLATE:
|
|
return 3;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_layer_initialize_state (CoglPipelineLayer *dest,
|
|
CoglPipelineLayer *src,
|
|
unsigned long differences)
|
|
{
|
|
CoglPipelineLayerBigState *big_state;
|
|
|
|
dest->differences |= differences;
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_UNIT)
|
|
dest->unit_index = src->unit_index;
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_TEXTURE)
|
|
dest->texture = src->texture;
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_FILTERS)
|
|
{
|
|
dest->min_filter = src->min_filter;
|
|
dest->mag_filter = src->mag_filter;
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_WRAP_MODES)
|
|
{
|
|
dest->wrap_mode_s = src->wrap_mode_s;
|
|
dest->wrap_mode_t = src->wrap_mode_t;
|
|
dest->wrap_mode_p = src->wrap_mode_p;
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_NEEDS_BIG_STATE)
|
|
{
|
|
if (!dest->has_big_state)
|
|
{
|
|
dest->big_state = g_slice_new (CoglPipelineLayerBigState);
|
|
dest->has_big_state = TRUE;
|
|
}
|
|
big_state = dest->big_state;
|
|
}
|
|
else
|
|
return;
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_COMBINE)
|
|
{
|
|
int n_args;
|
|
int i;
|
|
GLint func = src->big_state->texture_combine_rgb_func;
|
|
big_state->texture_combine_rgb_func = func;
|
|
n_args = _cogl_get_n_args_for_combine_func (func);
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
big_state->texture_combine_rgb_src[i] =
|
|
src->big_state->texture_combine_rgb_src[i];
|
|
big_state->texture_combine_rgb_op[i] =
|
|
src->big_state->texture_combine_rgb_op[i];
|
|
}
|
|
|
|
func = src->big_state->texture_combine_alpha_func;
|
|
big_state->texture_combine_alpha_func = func;
|
|
n_args = _cogl_get_n_args_for_combine_func (func);
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
big_state->texture_combine_alpha_src[i] =
|
|
src->big_state->texture_combine_alpha_src[i];
|
|
big_state->texture_combine_alpha_op[i] =
|
|
src->big_state->texture_combine_alpha_op[i];
|
|
}
|
|
}
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT)
|
|
memcpy (dest->big_state->texture_combine_constant,
|
|
src->big_state->texture_combine_constant,
|
|
sizeof (float) * 4);
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_USER_MATRIX)
|
|
dest->big_state->matrix = src->big_state->matrix;
|
|
|
|
if (differences & COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS)
|
|
dest->big_state->point_sprite_coords = src->big_state->point_sprite_coords;
|
|
}
|
|
|
|
/* NB: This function will allocate a new derived layer if you are
|
|
* trying to change the state of a layer with dependants so you must
|
|
* always check the return value.
|
|
*
|
|
* If a new layer is returned it will be owned by required_owner.
|
|
*
|
|
* required_owner can only by NULL for new, currently unowned layers
|
|
* with no dependants.
|
|
*/
|
|
static CoglPipelineLayer *
|
|
_cogl_pipeline_layer_pre_change_notify (CoglPipeline *required_owner,
|
|
CoglPipelineLayer *layer,
|
|
CoglPipelineLayerState change)
|
|
{
|
|
CoglTextureUnit *unit;
|
|
CoglPipelineLayer *authority;
|
|
|
|
/* Identify the case where the layer is new with no owner or
|
|
* dependants and so we don't need to do anything. */
|
|
if (COGL_PIPELINE_NODE (layer)->has_children == FALSE &&
|
|
layer->owner == NULL)
|
|
goto init_layer_state;
|
|
|
|
/* We only allow a NULL required_owner for new layers */
|
|
g_return_val_if_fail (required_owner != NULL, layer);
|
|
|
|
/* Chain up:
|
|
* A modification of a layer is indirectly also a modification of
|
|
* its owner so first make sure to flush the journal of any
|
|
* references to the current owner state and if necessary perform
|
|
* a copy-on-write for the required_owner if it has dependants.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (required_owner,
|
|
COGL_PIPELINE_STATE_LAYERS,
|
|
NULL,
|
|
TRUE);
|
|
|
|
/* Unlike pipelines; layers are simply considered immutable once
|
|
* they have dependants - either direct children, or another
|
|
* pipeline as an owner.
|
|
*/
|
|
if (COGL_PIPELINE_NODE (layer)->has_children ||
|
|
layer->owner != required_owner)
|
|
{
|
|
CoglPipelineLayer *new = _cogl_pipeline_layer_copy (layer);
|
|
if (layer->owner == required_owner)
|
|
_cogl_pipeline_remove_layer_difference (required_owner, layer, FALSE);
|
|
_cogl_pipeline_add_layer_difference (required_owner, new, FALSE);
|
|
cogl_object_unref (new);
|
|
layer = new;
|
|
goto init_layer_state;
|
|
}
|
|
|
|
/* Note: At this point we know there is only one pipeline dependant on
|
|
* this layer (required_owner), and there are no other layers
|
|
* dependant on this layer so it's ok to modify it. */
|
|
|
|
_cogl_pipeline_backend_layer_change_notify (required_owner, layer, change);
|
|
|
|
/* If the layer being changed is the same as the last layer we
|
|
* flushed to the corresponding texture unit then we keep a track of
|
|
* the changes so we can try to minimize redundant OpenGL calls if
|
|
* the same layer is flushed again.
|
|
*/
|
|
unit = _cogl_get_texture_unit (_cogl_pipeline_layer_get_unit_index (layer));
|
|
if (unit->layer == layer)
|
|
unit->layer_changes_since_flush |= change;
|
|
|
|
init_layer_state:
|
|
|
|
if (required_owner)
|
|
required_owner->age++;
|
|
|
|
/* If the pipeline isn't already an authority for the state group
|
|
* being modified then we need to initialize the corresponding
|
|
* state. */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
_cogl_pipeline_layer_initialize_state (layer, authority, change);
|
|
|
|
return layer;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_layer_unparent (CoglPipelineNode *layer)
|
|
{
|
|
/* Chain up */
|
|
_cogl_pipeline_node_unparent_real (layer);
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_layer_set_parent (CoglPipelineLayer *layer,
|
|
CoglPipelineLayer *parent)
|
|
{
|
|
/* Chain up */
|
|
_cogl_pipeline_node_set_parent_real (COGL_PIPELINE_NODE (layer),
|
|
COGL_PIPELINE_NODE (parent),
|
|
_cogl_pipeline_layer_unparent,
|
|
TRUE);
|
|
}
|
|
|
|
/* XXX: This is duplicated logic; the same as for
|
|
* _cogl_pipeline_prune_redundant_ancestry it would be nice to find a
|
|
* way to consolidate these functions! */
|
|
static void
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayer *new_parent = _cogl_pipeline_layer_get_parent (layer);
|
|
|
|
/* walk up past ancestors that are now redundant and potentially
|
|
* reparent the layer. */
|
|
while (_cogl_pipeline_layer_get_parent (new_parent) &&
|
|
(new_parent->differences | layer->differences) ==
|
|
layer->differences)
|
|
new_parent = _cogl_pipeline_layer_get_parent (new_parent);
|
|
|
|
_cogl_pipeline_layer_set_parent (layer, new_parent);
|
|
}
|
|
|
|
/*
|
|
* XXX: consider special casing layer->unit_index so it's not a sparse
|
|
* property so instead we can assume it's valid for all layer
|
|
* instances.
|
|
* - We would need to initialize ->unit_index in
|
|
* _cogl_pipeline_layer_copy ().
|
|
*
|
|
* XXX: If you use this API you should consider that the given layer
|
|
* might not be writeable and so a new derived layer will be allocated
|
|
* and modified instead. The layer modified will be returned so you
|
|
* can identify when this happens.
|
|
*/
|
|
static CoglPipelineLayer *
|
|
_cogl_pipeline_set_layer_unit (CoglPipeline *required_owner,
|
|
CoglPipelineLayer *layer,
|
|
int unit_index)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_UNIT;
|
|
CoglPipelineLayer *authority =
|
|
_cogl_pipeline_layer_get_authority (layer, change);
|
|
CoglPipelineLayer *new;
|
|
|
|
if (authority->unit_index == unit_index)
|
|
return layer;
|
|
|
|
new =
|
|
_cogl_pipeline_layer_pre_change_notify (required_owner,
|
|
layer,
|
|
change);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the layer we found is currently the authority on the state
|
|
* we are changing see if we can revert to one of our ancestors
|
|
* being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_pipeline_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipelineLayer *parent =
|
|
_cogl_pipeline_layer_get_parent (authority);
|
|
CoglPipelineLayer *old_authority =
|
|
_cogl_pipeline_layer_get_authority (parent, change);
|
|
|
|
if (old_authority->unit_index == unit_index)
|
|
{
|
|
layer->differences &= ~change;
|
|
return layer;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->unit_index = unit_index;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= change;
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
return layer;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
/* The layer we are trying to find */
|
|
int layer_index;
|
|
|
|
/* The layer we find or untouched if not found */
|
|
CoglPipelineLayer *layer;
|
|
|
|
/* If the layer can't be found then a new layer should be
|
|
* inserted after this texture unit index... */
|
|
int insert_after;
|
|
|
|
/* When adding a layer we need the list of layers to shift up
|
|
* to a new texture unit. When removing we need the list of
|
|
* layers to shift down.
|
|
*
|
|
* Note: the list isn't sorted */
|
|
CoglPipelineLayer **layers_to_shift;
|
|
int n_layers_to_shift;
|
|
|
|
/* When adding a layer we don't need a complete list of
|
|
* layers_to_shift if we find a layer already corresponding to the
|
|
* layer_index. */
|
|
gboolean ignore_shift_layers_if_found;
|
|
|
|
} CoglPipelineLayerInfo;
|
|
|
|
/* Returns TRUE once we know there is nothing more to update */
|
|
static gboolean
|
|
update_layer_info (CoglPipelineLayer *layer,
|
|
CoglPipelineLayerInfo *layer_info)
|
|
{
|
|
if (layer->index == layer_info->layer_index)
|
|
{
|
|
layer_info->layer = layer;
|
|
if (layer_info->ignore_shift_layers_if_found)
|
|
return TRUE;
|
|
}
|
|
else if (layer->index < layer_info->layer_index)
|
|
{
|
|
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
|
|
layer_info->insert_after = unit_index;
|
|
}
|
|
else
|
|
layer_info->layers_to_shift[layer_info->n_layers_to_shift++] =
|
|
layer;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Returns FALSE to break out of a _foreach_layer () iteration */
|
|
static gboolean
|
|
update_layer_info_cb (CoglPipelineLayer *layer,
|
|
void *user_data)
|
|
{
|
|
CoglPipelineLayerInfo *layer_info = user_data;
|
|
|
|
if (update_layer_info (layer, layer_info))
|
|
return FALSE; /* break */
|
|
else
|
|
return TRUE; /* continue */
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_get_layer_info (CoglPipeline *pipeline,
|
|
CoglPipelineLayerInfo *layer_info)
|
|
{
|
|
/* Note: we are assuming this pipeline is a _STATE_LAYERS authority */
|
|
int n_layers = pipeline->n_layers;
|
|
int i;
|
|
|
|
/* FIXME: _cogl_pipeline_foreach_layer_internal now calls
|
|
* _cogl_pipeline_update_layers_cache anyway so this codepath is
|
|
* pointless! */
|
|
if (layer_info->ignore_shift_layers_if_found &&
|
|
pipeline->layers_cache_dirty)
|
|
{
|
|
/* The expectation is that callers of
|
|
* _cogl_pipeline_get_layer_info are likely to be modifying the
|
|
* list of layers associated with a pipeline so in this case
|
|
* where we don't have a cache of the layers and we don't
|
|
* necessarily have to iterate all the layers of the pipeline we
|
|
* use a foreach_layer callback instead of updating the cache
|
|
* and iterating that as below. */
|
|
_cogl_pipeline_foreach_layer_internal (pipeline,
|
|
update_layer_info_cb,
|
|
layer_info);
|
|
return;
|
|
}
|
|
|
|
_cogl_pipeline_update_layers_cache (pipeline);
|
|
for (i = 0; i < n_layers; i++)
|
|
{
|
|
CoglPipelineLayer *layer = pipeline->layers_cache[i];
|
|
|
|
if (update_layer_info (layer, layer_info))
|
|
return;
|
|
}
|
|
}
|
|
|
|
static CoglPipelineLayer *
|
|
_cogl_pipeline_get_layer (CoglPipeline *pipeline,
|
|
int layer_index)
|
|
{
|
|
CoglPipeline *authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
CoglPipelineLayerInfo layer_info;
|
|
CoglPipelineLayer *layer;
|
|
int unit_index;
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NULL);
|
|
|
|
/* The layer index of the layer we want info about */
|
|
layer_info.layer_index = layer_index;
|
|
|
|
/* If a layer already exists with the given index this will be
|
|
* updated. */
|
|
layer_info.layer = NULL;
|
|
|
|
/* If a layer isn't found for the given index we'll need to know
|
|
* where to insert a new layer. */
|
|
layer_info.insert_after = -1;
|
|
|
|
/* If a layer can't be found then we'll need to insert a new layer
|
|
* and bump up the texture unit for all layers with an index
|
|
* > layer_index. */
|
|
layer_info.layers_to_shift =
|
|
g_alloca (sizeof (CoglPipelineLayer *) * authority->n_layers);
|
|
layer_info.n_layers_to_shift = 0;
|
|
|
|
/* If an exact match is found though we don't need a complete
|
|
* list of layers with indices > layer_index... */
|
|
layer_info.ignore_shift_layers_if_found = TRUE;
|
|
|
|
_cogl_pipeline_get_layer_info (authority, &layer_info);
|
|
|
|
if (layer_info.layer)
|
|
return layer_info.layer;
|
|
|
|
unit_index = layer_info.insert_after + 1;
|
|
if (unit_index == 0)
|
|
layer = _cogl_pipeline_layer_copy (ctx->default_layer_0);
|
|
else
|
|
{
|
|
CoglPipelineLayer *new;
|
|
layer = _cogl_pipeline_layer_copy (ctx->default_layer_n);
|
|
new = _cogl_pipeline_set_layer_unit (NULL, layer, unit_index);
|
|
/* Since we passed a newly allocated layer we wouldn't expect
|
|
* _set_layer_unit() to have to allocate *another* layer. */
|
|
g_assert (new == layer);
|
|
}
|
|
layer->index = layer_index;
|
|
|
|
for (i = 0; i < layer_info.n_layers_to_shift; i++)
|
|
{
|
|
CoglPipelineLayer *shift_layer = layer_info.layers_to_shift[i];
|
|
|
|
unit_index = _cogl_pipeline_layer_get_unit_index (shift_layer);
|
|
_cogl_pipeline_set_layer_unit (pipeline, shift_layer, unit_index + 1);
|
|
/* NB: shift_layer may not be writeable so _set_layer_unit()
|
|
* will allocate a derived layer internally which will become
|
|
* owned by pipeline. Check the return value if we need to do
|
|
* anything else with this layer. */
|
|
}
|
|
|
|
_cogl_pipeline_add_layer_difference (pipeline, layer, TRUE);
|
|
|
|
cogl_object_unref (layer);
|
|
|
|
return layer;
|
|
}
|
|
|
|
CoglHandle
|
|
_cogl_pipeline_layer_get_texture_real (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayer *authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_TEXTURE);
|
|
|
|
return authority->texture;
|
|
}
|
|
|
|
CoglHandle
|
|
_cogl_pipeline_get_layer_texture (CoglPipeline *pipeline,
|
|
int layer_index)
|
|
{
|
|
CoglPipelineLayer *layer =
|
|
_cogl_pipeline_get_layer (pipeline, layer_index);
|
|
return _cogl_pipeline_layer_get_texture (layer);
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_prune_empty_layer_difference (CoglPipeline *layers_authority,
|
|
CoglPipelineLayer *layer)
|
|
{
|
|
/* Find the GList link that references the empty layer */
|
|
GList *link = g_list_find (layers_authority->layer_differences, layer);
|
|
/* No pipeline directly owns the root node layer so this is safe... */
|
|
CoglPipelineLayer *layer_parent = _cogl_pipeline_layer_get_parent (layer);
|
|
CoglPipelineLayerInfo layer_info;
|
|
CoglPipeline *old_layers_authority;
|
|
|
|
g_return_if_fail (link != NULL);
|
|
|
|
/* If the layer's parent doesn't have an owner then we can simply
|
|
* take ownership ourselves and drop our reference on the empty
|
|
* layer.
|
|
*/
|
|
if (layer_parent->index == layer->index && layer_parent->owner == NULL)
|
|
{
|
|
cogl_object_ref (layer_parent);
|
|
link->data = _cogl_pipeline_layer_get_parent (layer);
|
|
cogl_object_unref (layer);
|
|
recursively_free_layer_caches (layers_authority);
|
|
return;
|
|
}
|
|
|
|
/* Now we want to find the layer that would become the authority for
|
|
* layer->index if we were to remove layer from
|
|
* layers_authority->layer_differences
|
|
*/
|
|
|
|
/* The layer index of the layer we want info about */
|
|
layer_info.layer_index = layer->index;
|
|
|
|
/* If a layer already exists with the given index this will be
|
|
* updated. */
|
|
layer_info.layer = NULL;
|
|
|
|
/* If a layer can't be found then we'll need to insert a new layer
|
|
* and bump up the texture unit for all layers with an index
|
|
* > layer_index. */
|
|
layer_info.layers_to_shift =
|
|
g_alloca (sizeof (CoglPipelineLayer *) * layers_authority->n_layers);
|
|
layer_info.n_layers_to_shift = 0;
|
|
|
|
/* If an exact match is found though we don't need a complete
|
|
* list of layers with indices > layer_index... */
|
|
layer_info.ignore_shift_layers_if_found = TRUE;
|
|
|
|
/* We know the default/root pipeline isn't a LAYERS authority so it's
|
|
* safe to use the result of _cogl_pipeline_get_parent (layers_authority)
|
|
* without checking it.
|
|
*/
|
|
old_layers_authority =
|
|
_cogl_pipeline_get_authority (_cogl_pipeline_get_parent (layers_authority),
|
|
COGL_PIPELINE_STATE_LAYERS);
|
|
|
|
_cogl_pipeline_get_layer_info (old_layers_authority, &layer_info);
|
|
|
|
/* If layer is the defining layer for the corresponding ->index then
|
|
* we can't get rid of it. */
|
|
if (!layer_info.layer)
|
|
return;
|
|
|
|
/* If the layer that would become the authority for layer->index is
|
|
* _cogl_pipeline_layer_get_parent (layer) then we can simply remove the
|
|
* layer difference. */
|
|
if (layer_info.layer == _cogl_pipeline_layer_get_parent (layer))
|
|
{
|
|
_cogl_pipeline_remove_layer_difference (layers_authority, layer, FALSE);
|
|
_cogl_pipeline_try_reverting_layers_authority (layers_authority,
|
|
old_layers_authority);
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_layer_texture (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglHandle texture)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_TEXTURE;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineLayer *new;
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
if (authority->texture == texture)
|
|
return;
|
|
|
|
new = _cogl_pipeline_layer_pre_change_notify (pipeline, layer, change);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_pipeline_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipelineLayer *parent =
|
|
_cogl_pipeline_layer_get_parent (authority);
|
|
CoglPipelineLayer *old_authority =
|
|
_cogl_pipeline_layer_get_authority (parent, change);
|
|
|
|
if (old_authority->texture == texture)
|
|
{
|
|
layer->differences &= ~change;
|
|
|
|
if (layer->texture != COGL_INVALID_HANDLE)
|
|
cogl_handle_unref (layer->texture);
|
|
|
|
g_assert (layer->owner == pipeline);
|
|
if (layer->differences == 0)
|
|
_cogl_pipeline_prune_empty_layer_difference (pipeline,
|
|
layer);
|
|
goto changed;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (texture != COGL_INVALID_HANDLE)
|
|
cogl_handle_ref (texture);
|
|
if (layer == authority &&
|
|
layer->texture != COGL_INVALID_HANDLE)
|
|
cogl_handle_unref (layer->texture);
|
|
layer->texture = texture;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= change;
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
changed:
|
|
|
|
handle_automatic_blend_enable (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int i;
|
|
CoglPipeline *pipeline;
|
|
unsigned long fallback_layers;
|
|
} CoglPipelineFallbackState;
|
|
|
|
static gboolean
|
|
fallback_layer_cb (CoglPipelineLayer *layer, void *user_data)
|
|
{
|
|
CoglPipelineFallbackState *state = user_data;
|
|
CoglPipeline *pipeline = state->pipeline;
|
|
CoglHandle texture = _cogl_pipeline_layer_get_texture (layer);
|
|
GLenum gl_target;
|
|
COGL_STATIC_COUNTER (layer_fallback_counter,
|
|
"layer fallback counter",
|
|
"Increments each time a layer's texture is "
|
|
"forced to a fallback texture",
|
|
0 /* no application private data */);
|
|
|
|
_COGL_GET_CONTEXT (ctx, FALSE);
|
|
|
|
if (!(state->fallback_layers & 1<<state->i))
|
|
return TRUE;
|
|
|
|
COGL_COUNTER_INC (_cogl_uprof_context, layer_fallback_counter);
|
|
|
|
if (G_LIKELY (texture != COGL_INVALID_HANDLE))
|
|
cogl_texture_get_gl_texture (texture, NULL, &gl_target);
|
|
else
|
|
gl_target = GL_TEXTURE_2D;
|
|
|
|
if (gl_target == GL_TEXTURE_2D)
|
|
texture = ctx->default_gl_texture_2d_tex;
|
|
#ifdef HAVE_COGL_GL
|
|
else if (gl_target == GL_TEXTURE_RECTANGLE_ARB)
|
|
texture = ctx->default_gl_texture_rect_tex;
|
|
#endif
|
|
else
|
|
{
|
|
g_warning ("We don't have a fallback texture we can use to fill "
|
|
"in for an invalid pipeline layer, since it was "
|
|
"using an unsupported texture target ");
|
|
/* might get away with this... */
|
|
texture = ctx->default_gl_texture_2d_tex;
|
|
}
|
|
|
|
cogl_pipeline_set_layer_texture (pipeline, layer->index, texture);
|
|
|
|
state->i++;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_set_layer_wrap_modes (CoglPipeline *pipeline,
|
|
CoglPipelineLayer *layer,
|
|
CoglPipelineLayer *authority,
|
|
CoglPipelineWrapModeInternal wrap_mode_s,
|
|
CoglPipelineWrapModeInternal wrap_mode_t,
|
|
CoglPipelineWrapModeInternal wrap_mode_p)
|
|
{
|
|
CoglPipelineLayer *new;
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_WRAP_MODES;
|
|
|
|
if (authority->wrap_mode_s == wrap_mode_s &&
|
|
authority->wrap_mode_t == wrap_mode_t &&
|
|
authority->wrap_mode_p == wrap_mode_p)
|
|
return;
|
|
|
|
new = _cogl_pipeline_layer_pre_change_notify (pipeline, layer, change);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_pipeline_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipelineLayer *parent =
|
|
_cogl_pipeline_layer_get_parent (authority);
|
|
CoglPipelineLayer *old_authority =
|
|
_cogl_pipeline_layer_get_authority (parent, change);
|
|
|
|
if (old_authority->wrap_mode_s == wrap_mode_s &&
|
|
old_authority->wrap_mode_t == wrap_mode_t &&
|
|
old_authority->wrap_mode_p == wrap_mode_p)
|
|
{
|
|
layer->differences &= ~change;
|
|
|
|
g_assert (layer->owner == pipeline);
|
|
if (layer->differences == 0)
|
|
_cogl_pipeline_prune_empty_layer_difference (pipeline,
|
|
layer);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->wrap_mode_s = wrap_mode_s;
|
|
layer->wrap_mode_t = wrap_mode_t;
|
|
layer->wrap_mode_p = wrap_mode_p;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= change;
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
}
|
|
|
|
static CoglPipelineWrapModeInternal
|
|
public_to_internal_wrap_mode (CoglPipelineWrapMode mode)
|
|
{
|
|
return (CoglPipelineWrapModeInternal)mode;
|
|
}
|
|
|
|
static CoglPipelineWrapMode
|
|
internal_to_public_wrap_mode (CoglPipelineWrapModeInternal internal_mode)
|
|
{
|
|
g_return_val_if_fail (internal_mode !=
|
|
COGL_PIPELINE_WRAP_MODE_INTERNAL_CLAMP_TO_BORDER,
|
|
COGL_PIPELINE_WRAP_MODE_AUTOMATIC);
|
|
return (CoglPipelineWrapMode)internal_mode;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_layer_wrap_mode_s (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineWrapMode mode)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_WRAP_MODES;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineWrapModeInternal internal_mode =
|
|
public_to_internal_wrap_mode (mode);
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
_cogl_pipeline_set_layer_wrap_modes (pipeline, layer, authority,
|
|
internal_mode,
|
|
authority->wrap_mode_t,
|
|
authority->wrap_mode_p);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_layer_wrap_mode_t (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineWrapMode mode)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_WRAP_MODES;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineWrapModeInternal internal_mode =
|
|
public_to_internal_wrap_mode (mode);
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
_cogl_pipeline_set_layer_wrap_modes (pipeline, layer, authority,
|
|
authority->wrap_mode_s,
|
|
internal_mode,
|
|
authority->wrap_mode_p);
|
|
}
|
|
|
|
/* The rationale for naming the third texture coordinate 'p' instead
|
|
of OpenGL's usual 'r' is that 'r' conflicts with the usual naming
|
|
of the 'red' component when treating a vector as a color. Under
|
|
GLSL this is awkward because the texture swizzling for a vector
|
|
uses a single letter for each component and the names for colors,
|
|
textures and positions are synonymous. GLSL works around this by
|
|
naming the components of the texture s, t, p and q. Cogl already
|
|
effectively already exposes this naming because it exposes GLSL so
|
|
it makes sense to use that naming consistently. Another alternative
|
|
could be u, v and w. This is what Blender and Direct3D use. However
|
|
the w component conflicts with the w component of a position
|
|
vertex. */
|
|
void
|
|
cogl_pipeline_set_layer_wrap_mode_p (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineWrapMode mode)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_WRAP_MODES;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineWrapModeInternal internal_mode =
|
|
public_to_internal_wrap_mode (mode);
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
_cogl_pipeline_set_layer_wrap_modes (pipeline, layer, authority,
|
|
authority->wrap_mode_s,
|
|
authority->wrap_mode_t,
|
|
internal_mode);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_layer_wrap_mode (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineWrapMode mode)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_WRAP_MODES;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineWrapModeInternal internal_mode =
|
|
public_to_internal_wrap_mode (mode);
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
_cogl_pipeline_set_layer_wrap_modes (pipeline, layer, authority,
|
|
internal_mode,
|
|
internal_mode,
|
|
internal_mode);
|
|
/* XXX: I wonder if we should really be duplicating the mode into
|
|
* the 'r' wrap mode too? */
|
|
}
|
|
|
|
/* FIXME: deprecate this API */
|
|
CoglPipelineWrapMode
|
|
_cogl_pipeline_layer_get_wrap_mode_s (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_WRAP_MODES;
|
|
CoglPipelineLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_pipeline_layer (layer), FALSE);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
return internal_to_public_wrap_mode (authority->wrap_mode_s);
|
|
}
|
|
|
|
CoglPipelineWrapMode
|
|
cogl_pipeline_get_layer_wrap_mode_s (CoglPipeline *pipeline, int layer_index)
|
|
{
|
|
CoglPipelineLayer *layer;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
/* FIXME: we shouldn't ever construct a layer in a getter function */
|
|
|
|
return _cogl_pipeline_layer_get_wrap_mode_s (layer);
|
|
}
|
|
|
|
/* FIXME: deprecate this API */
|
|
CoglPipelineWrapMode
|
|
_cogl_pipeline_layer_get_wrap_mode_t (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_WRAP_MODES;
|
|
CoglPipelineLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_pipeline_layer (layer), FALSE);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
return internal_to_public_wrap_mode (authority->wrap_mode_t);
|
|
}
|
|
|
|
CoglPipelineWrapMode
|
|
cogl_pipeline_get_layer_wrap_mode_t (CoglPipeline *pipeline, int layer_index)
|
|
{
|
|
CoglPipelineLayer *layer;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
/* FIXME: we shouldn't ever construct a layer in a getter function */
|
|
|
|
return _cogl_pipeline_layer_get_wrap_mode_t (layer);
|
|
}
|
|
|
|
CoglPipelineWrapMode
|
|
_cogl_pipeline_layer_get_wrap_mode_p (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayerState change = COGL_PIPELINE_LAYER_STATE_WRAP_MODES;
|
|
CoglPipelineLayer *authority =
|
|
_cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
return internal_to_public_wrap_mode (authority->wrap_mode_p);
|
|
}
|
|
|
|
CoglPipelineWrapMode
|
|
cogl_pipeline_get_layer_wrap_mode_p (CoglPipeline *pipeline, int layer_index)
|
|
{
|
|
CoglPipelineLayer *layer;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
return _cogl_pipeline_layer_get_wrap_mode_p (layer);
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_layer_get_wrap_modes (CoglPipelineLayer *layer,
|
|
CoglPipelineWrapModeInternal *wrap_mode_s,
|
|
CoglPipelineWrapModeInternal *wrap_mode_t,
|
|
CoglPipelineWrapModeInternal *wrap_mode_p)
|
|
{
|
|
CoglPipelineLayer *authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_WRAP_MODES);
|
|
|
|
*wrap_mode_s = authority->wrap_mode_s;
|
|
*wrap_mode_t = authority->wrap_mode_t;
|
|
*wrap_mode_p = authority->wrap_mode_p;
|
|
}
|
|
|
|
gboolean
|
|
cogl_pipeline_set_layer_point_sprite_coords_enabled (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
gboolean enable,
|
|
GError **error)
|
|
{
|
|
CoglPipelineLayerState change =
|
|
COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *new;
|
|
CoglPipelineLayer *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
/* Don't allow point sprite coordinates to be enabled if the driver
|
|
doesn't support it */
|
|
if (enable && !cogl_features_available (COGL_FEATURE_POINT_SPRITE))
|
|
{
|
|
if (error)
|
|
{
|
|
g_set_error (error, COGL_ERROR, COGL_ERROR_UNSUPPORTED,
|
|
"Point sprite texture coordinates are enabled "
|
|
"for a layer but the GL driver does not support it.");
|
|
}
|
|
else
|
|
{
|
|
static gboolean warning_seen = FALSE;
|
|
if (!warning_seen)
|
|
g_warning ("Point sprite texture coordinates are enabled "
|
|
"for a layer but the GL driver does not support it.");
|
|
warning_seen = TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
if (authority->big_state->point_sprite_coords == enable)
|
|
return TRUE;
|
|
|
|
new = _cogl_pipeline_layer_pre_change_notify (pipeline, layer, change);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_pipeline_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipelineLayer *parent =
|
|
_cogl_pipeline_layer_get_parent (authority);
|
|
CoglPipelineLayer *old_authority =
|
|
_cogl_pipeline_layer_get_authority (parent, change);
|
|
|
|
if (old_authority->big_state->point_sprite_coords == enable)
|
|
{
|
|
layer->differences &= ~change;
|
|
|
|
g_assert (layer->owner == pipeline);
|
|
if (layer->differences == 0)
|
|
_cogl_pipeline_prune_empty_layer_difference (pipeline,
|
|
layer);
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->big_state->point_sprite_coords = enable;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= change;
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
cogl_pipeline_get_layer_point_sprite_coords_enabled (CoglPipeline *pipeline,
|
|
int layer_index)
|
|
{
|
|
CoglPipelineLayerState change =
|
|
COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
/* FIXME: we shouldn't ever construct a layer in a getter function */
|
|
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
|
|
return authority->big_state->point_sprite_coords;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
CoglPipeline *pipeline;
|
|
CoglHandle texture;
|
|
} CoglPipelineOverrideLayerState;
|
|
|
|
static gboolean
|
|
override_layer_texture_cb (CoglPipelineLayer *layer, void *user_data)
|
|
{
|
|
CoglPipelineOverrideLayerState *state = user_data;
|
|
|
|
cogl_pipeline_set_layer_texture (state->pipeline,
|
|
layer->index,
|
|
state->texture);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_apply_overrides (CoglPipeline *pipeline,
|
|
CoglPipelineFlushOptions *options)
|
|
{
|
|
COGL_STATIC_COUNTER (apply_overrides_counter,
|
|
"pipeline overrides counter",
|
|
"Increments each time we have to apply "
|
|
"override options to a pipeline",
|
|
0 /* no application private data */);
|
|
|
|
COGL_COUNTER_INC (_cogl_uprof_context, apply_overrides_counter);
|
|
|
|
if (options->flags & COGL_PIPELINE_FLUSH_DISABLE_MASK)
|
|
{
|
|
int i;
|
|
|
|
/* NB: we can assume that once we see one bit to disable
|
|
* a layer, all subsequent layers are also disabled. */
|
|
for (i = 0; i < 32 && options->disable_layers & (1<<i); i++)
|
|
;
|
|
|
|
_cogl_pipeline_prune_to_n_layers (pipeline, i);
|
|
}
|
|
|
|
if (options->flags & COGL_PIPELINE_FLUSH_FALLBACK_MASK)
|
|
{
|
|
CoglPipelineFallbackState state;
|
|
|
|
state.i = 0;
|
|
state.pipeline = pipeline;
|
|
state.fallback_layers = options->fallback_layers;
|
|
|
|
_cogl_pipeline_foreach_layer_internal (pipeline,
|
|
fallback_layer_cb,
|
|
&state);
|
|
}
|
|
|
|
if (options->flags & COGL_PIPELINE_FLUSH_LAYER0_OVERRIDE)
|
|
{
|
|
CoglPipelineOverrideLayerState state;
|
|
|
|
_cogl_pipeline_prune_to_n_layers (pipeline, 1);
|
|
|
|
/* NB: we are overriding the first layer, but we don't know
|
|
* the user's given layer_index, which is why we use
|
|
* _cogl_pipeline_foreach_layer_internal() here even though we know
|
|
* there's only one layer. */
|
|
state.pipeline = pipeline;
|
|
state.texture = options->layer0_override_texture;
|
|
_cogl_pipeline_foreach_layer_internal (pipeline,
|
|
override_layer_texture_cb,
|
|
&state);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layer_texture_equal (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1)
|
|
{
|
|
GLuint gl_handle0, gl_handle1;
|
|
GLenum gl_target0, gl_target1;
|
|
|
|
cogl_texture_get_gl_texture (authority0->texture, &gl_handle0, &gl_target0);
|
|
cogl_texture_get_gl_texture (authority1->texture, &gl_handle1, &gl_target1);
|
|
|
|
return (gl_handle0 == gl_handle1 &&
|
|
gl_target0 == gl_target1);
|
|
}
|
|
|
|
/* Determine the mask of differences between two layers.
|
|
*
|
|
* XXX: If layers and pipelines could both be cast to a common Tree
|
|
* type of some kind then we could have a unified
|
|
* compare_differences() function.
|
|
*/
|
|
unsigned long
|
|
_cogl_pipeline_layer_compare_differences (CoglPipelineLayer *layer0,
|
|
CoglPipelineLayer *layer1)
|
|
{
|
|
CoglPipelineLayer *node0;
|
|
CoglPipelineLayer *node1;
|
|
int len0;
|
|
int len1;
|
|
int len0_index;
|
|
int len1_index;
|
|
int count;
|
|
int i;
|
|
CoglPipelineLayer *common_ancestor = NULL;
|
|
unsigned long layers_difference = 0;
|
|
|
|
_COGL_GET_CONTEXT (ctx, 0);
|
|
|
|
/* Algorithm:
|
|
*
|
|
* 1) Walk the ancestors of each layer to the root node, adding a
|
|
* pointer to each ancester node to two GArrays:
|
|
* ctx->pipeline0_nodes, and ctx->pipeline1_nodes.
|
|
*
|
|
* 2) Compare the arrays to find the nodes where they stop to
|
|
* differ.
|
|
*
|
|
* 3) For each array now iterate from index 0 to the first node of
|
|
* difference ORing that nodes ->difference mask into the final
|
|
* pipeline_differences mask.
|
|
*/
|
|
|
|
g_array_set_size (ctx->pipeline0_nodes, 0);
|
|
g_array_set_size (ctx->pipeline1_nodes, 0);
|
|
for (node0 = layer0; node0; node0 = _cogl_pipeline_layer_get_parent (node0))
|
|
g_array_append_vals (ctx->pipeline0_nodes, &node0, 1);
|
|
for (node1 = layer1; node1; node1 = _cogl_pipeline_layer_get_parent (node1))
|
|
g_array_append_vals (ctx->pipeline1_nodes, &node1, 1);
|
|
|
|
len0 = ctx->pipeline0_nodes->len;
|
|
len1 = ctx->pipeline1_nodes->len;
|
|
/* There's no point looking at the last entries since we know both
|
|
* layers must have the same default layer as their root node. */
|
|
len0_index = len0 - 2;
|
|
len1_index = len1 - 2;
|
|
count = MIN (len0, len1) - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node0 = g_array_index (ctx->pipeline0_nodes,
|
|
CoglPipelineLayer *, len0_index--);
|
|
node1 = g_array_index (ctx->pipeline1_nodes,
|
|
CoglPipelineLayer *, len1_index--);
|
|
if (node0 != node1)
|
|
{
|
|
common_ancestor = _cogl_pipeline_layer_get_parent (node0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If we didn't already find the first the common_ancestor ancestor
|
|
* that's because one pipeline is a direct descendant of the other
|
|
* and in this case the first common ancestor is the last node we
|
|
* looked at. */
|
|
if (!common_ancestor)
|
|
common_ancestor = node0;
|
|
|
|
count = len0 - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node0 = g_array_index (ctx->pipeline0_nodes, CoglPipelineLayer *, i);
|
|
if (node0 == common_ancestor)
|
|
break;
|
|
layers_difference |= node0->differences;
|
|
}
|
|
|
|
count = len1 - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node1 = g_array_index (ctx->pipeline1_nodes, CoglPipelineLayer *, i);
|
|
if (node1 == common_ancestor)
|
|
break;
|
|
layers_difference |= node1->differences;
|
|
}
|
|
|
|
return layers_difference;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layer_combine_state_equal (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1)
|
|
{
|
|
CoglPipelineLayerBigState *big_state0 = authority0->big_state;
|
|
CoglPipelineLayerBigState *big_state1 = authority1->big_state;
|
|
int n_args;
|
|
int i;
|
|
|
|
if (big_state0->texture_combine_rgb_func !=
|
|
big_state1->texture_combine_rgb_func)
|
|
return FALSE;
|
|
|
|
if (big_state0->texture_combine_alpha_func !=
|
|
big_state1->texture_combine_alpha_func)
|
|
return FALSE;
|
|
|
|
n_args =
|
|
_cogl_get_n_args_for_combine_func (big_state0->texture_combine_rgb_func);
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
if ((big_state0->texture_combine_rgb_src[i] !=
|
|
big_state1->texture_combine_rgb_src[i]) ||
|
|
(big_state0->texture_combine_rgb_op[i] !=
|
|
big_state1->texture_combine_rgb_op[i]))
|
|
return FALSE;
|
|
}
|
|
|
|
n_args =
|
|
_cogl_get_n_args_for_combine_func (big_state0->texture_combine_alpha_func);
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
if ((big_state0->texture_combine_alpha_src[i] !=
|
|
big_state1->texture_combine_alpha_src[i]) ||
|
|
(big_state0->texture_combine_alpha_op[i] !=
|
|
big_state1->texture_combine_alpha_op[i]))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layer_combine_constant_equal (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1)
|
|
{
|
|
return memcmp (authority0->big_state->texture_combine_constant,
|
|
authority1->big_state->texture_combine_constant,
|
|
sizeof (float) * 4) == 0 ? TRUE : FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layer_filters_equal (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1)
|
|
{
|
|
if (authority0->mag_filter != authority1->mag_filter)
|
|
return FALSE;
|
|
if (authority0->min_filter != authority1->min_filter)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layer_wrap_modes_equal (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1)
|
|
{
|
|
if (authority0->wrap_mode_s != authority1->wrap_mode_s ||
|
|
authority0->wrap_mode_t != authority1->wrap_mode_t ||
|
|
authority0->wrap_mode_p != authority1->wrap_mode_p)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layer_user_matrix_equal (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1)
|
|
{
|
|
CoglPipelineLayerBigState *big_state0 = authority0->big_state;
|
|
CoglPipelineLayerBigState *big_state1 = authority1->big_state;
|
|
|
|
if (!cogl_matrix_equal (&big_state0->matrix, &big_state1->matrix))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layer_point_sprite_coords_equal (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1)
|
|
{
|
|
CoglPipelineLayerBigState *big_state0 = authority0->big_state;
|
|
CoglPipelineLayerBigState *big_state1 = authority1->big_state;
|
|
|
|
return big_state0->point_sprite_coords == big_state1->point_sprite_coords;
|
|
}
|
|
|
|
typedef gboolean
|
|
(*CoglPipelineLayerStateComparitor) (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1);
|
|
|
|
static gboolean
|
|
layer_state_equal (CoglPipelineLayerState state,
|
|
CoglPipelineLayer *layer0,
|
|
CoglPipelineLayer *layer1,
|
|
CoglPipelineLayerStateComparitor comparitor)
|
|
{
|
|
CoglPipelineLayer *authority0 =
|
|
_cogl_pipeline_layer_get_authority (layer0, state);
|
|
CoglPipelineLayer *authority1 =
|
|
_cogl_pipeline_layer_get_authority (layer1, state);
|
|
|
|
return comparitor (authority0, authority1);
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layer_equal (CoglPipelineLayer *layer0,
|
|
CoglPipelineLayer *layer1)
|
|
{
|
|
unsigned long layers_difference;
|
|
|
|
if (layer0 == layer1)
|
|
return TRUE;
|
|
|
|
layers_difference =
|
|
_cogl_pipeline_layer_compare_differences (layer0, layer1);
|
|
|
|
if (layers_difference & COGL_PIPELINE_LAYER_STATE_TEXTURE &&
|
|
!layer_state_equal (COGL_PIPELINE_LAYER_STATE_TEXTURE,
|
|
layer0, layer1,
|
|
_cogl_pipeline_layer_texture_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_PIPELINE_LAYER_STATE_COMBINE &&
|
|
!layer_state_equal (COGL_PIPELINE_LAYER_STATE_COMBINE,
|
|
layer0, layer1,
|
|
_cogl_pipeline_layer_combine_state_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT &&
|
|
!layer_state_equal (COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT,
|
|
layer0, layer1,
|
|
_cogl_pipeline_layer_combine_constant_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_PIPELINE_LAYER_STATE_FILTERS &&
|
|
!layer_state_equal (COGL_PIPELINE_LAYER_STATE_FILTERS,
|
|
layer0, layer1,
|
|
_cogl_pipeline_layer_filters_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_PIPELINE_LAYER_STATE_WRAP_MODES &&
|
|
!layer_state_equal (COGL_PIPELINE_LAYER_STATE_WRAP_MODES,
|
|
layer0, layer1,
|
|
_cogl_pipeline_layer_wrap_modes_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_PIPELINE_LAYER_STATE_USER_MATRIX &&
|
|
!layer_state_equal (COGL_PIPELINE_LAYER_STATE_USER_MATRIX,
|
|
layer0, layer1,
|
|
_cogl_pipeline_layer_user_matrix_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS &&
|
|
!layer_state_equal (COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS,
|
|
layer0, layer1,
|
|
_cogl_pipeline_layer_point_sprite_coords_equal))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_color_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
return cogl_color_equal (&authority0->color, &authority1->color);
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_lighting_state_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
CoglPipelineLightingState *state0 = &authority0->big_state->lighting_state;
|
|
CoglPipelineLightingState *state1 = &authority1->big_state->lighting_state;
|
|
|
|
if (memcmp (state0->ambient, state1->ambient, sizeof (float) * 4) != 0)
|
|
return FALSE;
|
|
if (memcmp (state0->diffuse, state1->diffuse, sizeof (float) * 4) != 0)
|
|
return FALSE;
|
|
if (memcmp (state0->specular, state1->specular, sizeof (float) * 4) != 0)
|
|
return FALSE;
|
|
if (memcmp (state0->emission, state1->emission, sizeof (float) * 4) != 0)
|
|
return FALSE;
|
|
if (state0->shininess != state1->shininess)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_alpha_func_state_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
CoglPipelineAlphaFuncState *alpha_state0 =
|
|
&authority0->big_state->alpha_state;
|
|
CoglPipelineAlphaFuncState *alpha_state1 =
|
|
&authority1->big_state->alpha_state;
|
|
|
|
return alpha_state0->alpha_func == alpha_state1->alpha_func;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_alpha_func_reference_state_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
CoglPipelineAlphaFuncState *alpha_state0 =
|
|
&authority0->big_state->alpha_state;
|
|
CoglPipelineAlphaFuncState *alpha_state1 =
|
|
&authority1->big_state->alpha_state;
|
|
|
|
return (alpha_state0->alpha_func_reference ==
|
|
alpha_state1->alpha_func_reference);
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_blend_state_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
CoglPipelineBlendState *blend_state0 = &authority0->big_state->blend_state;
|
|
CoglPipelineBlendState *blend_state1 = &authority1->big_state->blend_state;
|
|
|
|
#ifndef HAVE_COGL_GLES
|
|
if (blend_state0->blend_equation_rgb != blend_state1->blend_equation_rgb)
|
|
return FALSE;
|
|
if (blend_state0->blend_equation_alpha !=
|
|
blend_state1->blend_equation_alpha)
|
|
return FALSE;
|
|
if (blend_state0->blend_src_factor_alpha !=
|
|
blend_state1->blend_src_factor_alpha)
|
|
return FALSE;
|
|
if (blend_state0->blend_dst_factor_alpha !=
|
|
blend_state1->blend_dst_factor_alpha)
|
|
return FALSE;
|
|
#endif
|
|
if (blend_state0->blend_src_factor_rgb !=
|
|
blend_state1->blend_src_factor_rgb)
|
|
return FALSE;
|
|
if (blend_state0->blend_dst_factor_rgb !=
|
|
blend_state1->blend_dst_factor_rgb)
|
|
return FALSE;
|
|
#ifndef HAVE_COGL_GLES
|
|
if (!cogl_color_equal (&blend_state0->blend_constant,
|
|
&blend_state1->blend_constant))
|
|
return FALSE;
|
|
#endif
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_depth_state_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
if (authority0->big_state->depth_state.depth_test_enabled == FALSE &&
|
|
authority1->big_state->depth_state.depth_test_enabled == FALSE)
|
|
return TRUE;
|
|
else
|
|
return memcmp (&authority0->big_state->depth_state,
|
|
&authority1->big_state->depth_state,
|
|
sizeof (CoglPipelineDepthState)) == 0;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_fog_state_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
CoglPipelineFogState *fog_state0 = &authority0->big_state->fog_state;
|
|
CoglPipelineFogState *fog_state1 = &authority1->big_state->fog_state;
|
|
|
|
if (fog_state0->enabled == fog_state1->enabled &&
|
|
cogl_color_equal (&fog_state0->color, &fog_state1->color) &&
|
|
fog_state0->mode == fog_state1->mode &&
|
|
fog_state0->density == fog_state1->density &&
|
|
fog_state0->z_near == fog_state1->z_near &&
|
|
fog_state0->z_far == fog_state1->z_far)
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_point_size_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
return authority0->big_state->point_size == authority1->big_state->point_size;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_user_shader_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
return (authority0->big_state->user_program ==
|
|
authority1->big_state->user_program);
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_layers_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
int i;
|
|
|
|
if (authority0->n_layers != authority1->n_layers)
|
|
return FALSE;
|
|
|
|
_cogl_pipeline_update_layers_cache (authority0);
|
|
_cogl_pipeline_update_layers_cache (authority1);
|
|
|
|
for (i = 0; i < authority0->n_layers; i++)
|
|
{
|
|
if (!_cogl_pipeline_layer_equal (authority0->layers_cache[i],
|
|
authority1->layers_cache[i]))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Determine the mask of differences between two pipelines */
|
|
unsigned long
|
|
_cogl_pipeline_compare_differences (CoglPipeline *pipeline0,
|
|
CoglPipeline *pipeline1)
|
|
{
|
|
CoglPipeline *node0;
|
|
CoglPipeline *node1;
|
|
int len0;
|
|
int len1;
|
|
int len0_index;
|
|
int len1_index;
|
|
int count;
|
|
int i;
|
|
CoglPipeline *common_ancestor = NULL;
|
|
unsigned long pipelines_difference = 0;
|
|
|
|
_COGL_GET_CONTEXT (ctx, 0);
|
|
|
|
/* Algorithm:
|
|
*
|
|
* 1) Walk the ancestors of each layer to the root node, adding a
|
|
* pointer to each ancester node to two GArrays:
|
|
* ctx->pipeline0_nodes, and ctx->pipeline1_nodes.
|
|
*
|
|
* 2) Compare the arrays to find the nodes where they stop to
|
|
* differ.
|
|
*
|
|
* 3) For each array now iterate from index 0 to the first node of
|
|
* difference ORing that nodes ->difference mask into the final
|
|
* pipeline_differences mask.
|
|
*/
|
|
|
|
g_array_set_size (ctx->pipeline0_nodes, 0);
|
|
g_array_set_size (ctx->pipeline1_nodes, 0);
|
|
for (node0 = pipeline0; node0; node0 = _cogl_pipeline_get_parent (node0))
|
|
g_array_append_vals (ctx->pipeline0_nodes, &node0, 1);
|
|
for (node1 = pipeline1; node1; node1 = _cogl_pipeline_get_parent (node1))
|
|
g_array_append_vals (ctx->pipeline1_nodes, &node1, 1);
|
|
|
|
len0 = ctx->pipeline0_nodes->len;
|
|
len1 = ctx->pipeline1_nodes->len;
|
|
/* There's no point looking at the last entries since we know both
|
|
* layers must have the same default layer as their root node. */
|
|
len0_index = len0 - 2;
|
|
len1_index = len1 - 2;
|
|
count = MIN (len0, len1) - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node0 = g_array_index (ctx->pipeline0_nodes,
|
|
CoglPipeline *, len0_index--);
|
|
node1 = g_array_index (ctx->pipeline1_nodes,
|
|
CoglPipeline *, len1_index--);
|
|
if (node0 != node1)
|
|
{
|
|
common_ancestor = _cogl_pipeline_get_parent (node0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If we didn't already find the first the common_ancestor ancestor
|
|
* that's because one pipeline is a direct descendant of the other
|
|
* and in this case the first common ancestor is the last node we
|
|
* looked at. */
|
|
if (!common_ancestor)
|
|
common_ancestor = node0;
|
|
|
|
count = len0 - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node0 = g_array_index (ctx->pipeline0_nodes, CoglPipeline *, i);
|
|
if (node0 == common_ancestor)
|
|
break;
|
|
pipelines_difference |= node0->differences;
|
|
}
|
|
|
|
count = len1 - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node1 = g_array_index (ctx->pipeline1_nodes, CoglPipeline *, i);
|
|
if (node1 == common_ancestor)
|
|
break;
|
|
pipelines_difference |= node1->differences;
|
|
}
|
|
|
|
return pipelines_difference;
|
|
|
|
}
|
|
|
|
static gboolean
|
|
simple_property_equal (CoglPipeline *pipeline0,
|
|
CoglPipeline *pipeline1,
|
|
unsigned long pipelines_difference,
|
|
CoglPipelineState state,
|
|
CoglPipelineStateComparitor comparitor)
|
|
{
|
|
if (pipelines_difference & state)
|
|
{
|
|
if (!comparitor (_cogl_pipeline_get_authority (pipeline0, state),
|
|
_cogl_pipeline_get_authority (pipeline1, state)))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Comparison of two arbitrary pipelines is done by:
|
|
* 1) walking up the parents of each pipeline until a common
|
|
* ancestor is found, and at each step ORing together the
|
|
* difference masks.
|
|
*
|
|
* 2) using the final difference mask to determine which state
|
|
* groups to compare.
|
|
*
|
|
* This is used by the Cogl journal to compare pipelines so that it
|
|
* can split up geometry that needs different OpenGL state.
|
|
*
|
|
* It is acceptable to have false negatives - although they will result
|
|
* in redundant OpenGL calls that try and update the state.
|
|
*
|
|
* When comparing texture layers, _cogl_pipeline_equal will actually
|
|
* compare the underlying GL texture handle that the Cogl texture uses
|
|
* so that atlas textures and sub textures will be considered equal if
|
|
* they point to the same texture. This is useful for comparing
|
|
* pipelines in the journal but it means that _cogl_pipeline_equal
|
|
* doesn't strictly compare whether the pipelines are the same. If we
|
|
* needed those semantics we could perhaps add another function or
|
|
* some flags to control the behaviour.
|
|
*
|
|
* False positives aren't allowed.
|
|
*/
|
|
gboolean
|
|
_cogl_pipeline_equal (CoglPipeline *pipeline0,
|
|
CoglPipeline *pipeline1,
|
|
gboolean skip_gl_color)
|
|
{
|
|
unsigned long pipelines_difference;
|
|
gboolean ret;
|
|
COGL_STATIC_TIMER (pipeline_equal_timer,
|
|
"Mainloop", /* parent */
|
|
"_cogl_pipeline_equal",
|
|
"The time spent comparing cogl pipelines",
|
|
0 /* no application private data */);
|
|
|
|
COGL_TIMER_START (_cogl_uprof_context, pipeline_equal_timer);
|
|
|
|
if (pipeline0 == pipeline1)
|
|
{
|
|
ret = TRUE;
|
|
goto done;
|
|
}
|
|
|
|
ret = FALSE;
|
|
|
|
/* First check non-sparse properties */
|
|
|
|
if (pipeline0->real_blend_enable != pipeline1->real_blend_enable)
|
|
goto done;
|
|
|
|
/* Then check sparse properties */
|
|
|
|
pipelines_difference =
|
|
_cogl_pipeline_compare_differences (pipeline0, pipeline1);
|
|
|
|
if (pipelines_difference & COGL_PIPELINE_STATE_COLOR &&
|
|
!skip_gl_color)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_COLOR;
|
|
CoglPipeline *authority0 =
|
|
_cogl_pipeline_get_authority (pipeline0, state);
|
|
CoglPipeline *authority1 =
|
|
_cogl_pipeline_get_authority (pipeline1, state);
|
|
|
|
if (!cogl_color_equal (&authority0->color, &authority1->color))
|
|
goto done;
|
|
}
|
|
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_LIGHTING,
|
|
_cogl_pipeline_lighting_state_equal))
|
|
goto done;
|
|
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_ALPHA_FUNC,
|
|
_cogl_pipeline_alpha_func_state_equal))
|
|
goto done;
|
|
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_ALPHA_FUNC_REFERENCE,
|
|
_cogl_pipeline_alpha_func_reference_state_equal))
|
|
goto done;
|
|
|
|
/* We don't need to compare the detailed blending state if we know
|
|
* blending is disabled for both pipelines. */
|
|
if (pipeline0->real_blend_enable &&
|
|
pipelines_difference & COGL_PIPELINE_STATE_BLEND)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_BLEND;
|
|
CoglPipeline *authority0 =
|
|
_cogl_pipeline_get_authority (pipeline0, state);
|
|
CoglPipeline *authority1 =
|
|
_cogl_pipeline_get_authority (pipeline1, state);
|
|
|
|
if (!_cogl_pipeline_blend_state_equal (authority0, authority1))
|
|
goto done;
|
|
}
|
|
|
|
/* XXX: we don't need to compare the BLEND_ENABLE state because it's
|
|
* already reflected in ->real_blend_enable */
|
|
#if 0
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_BLEND,
|
|
_cogl_pipeline_blend_enable_equal))
|
|
return FALSE;
|
|
#endif
|
|
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_DEPTH,
|
|
_cogl_pipeline_depth_state_equal))
|
|
goto done;
|
|
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_FOG,
|
|
_cogl_pipeline_fog_state_equal))
|
|
goto done;
|
|
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_POINT_SIZE,
|
|
_cogl_pipeline_point_size_equal))
|
|
goto done;
|
|
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_USER_SHADER,
|
|
_cogl_pipeline_user_shader_equal))
|
|
goto done;
|
|
|
|
if (!simple_property_equal (pipeline0, pipeline1,
|
|
pipelines_difference,
|
|
COGL_PIPELINE_STATE_LAYERS,
|
|
_cogl_pipeline_layers_equal))
|
|
goto done;
|
|
|
|
ret = TRUE;
|
|
done:
|
|
COGL_TIMER_STOP (_cogl_uprof_context, pipeline_equal_timer);
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_get_color (CoglPipeline *pipeline,
|
|
CoglColor *color)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_COLOR);
|
|
|
|
*color = authority->color;
|
|
}
|
|
|
|
/* This is used heavily by the cogl journal when logging quads */
|
|
void
|
|
_cogl_pipeline_get_colorubv (CoglPipeline *pipeline,
|
|
guint8 *color)
|
|
{
|
|
CoglPipeline *authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_COLOR);
|
|
|
|
_cogl_color_get_rgba_4ubv (&authority->color, color);
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_prune_redundant_ancestry (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *new_parent = _cogl_pipeline_get_parent (pipeline);
|
|
|
|
/* Before considering pruning redundant ancestry we check if this
|
|
* pipeline is an authority for layer state and if so only consider
|
|
* reparenting if it *owns* all the layers it depends on. NB: A
|
|
* pipeline can be be a STATE_LAYERS authority but it may still
|
|
* defer to its ancestors to define the state for some of its
|
|
* layers.
|
|
*
|
|
* For example a pipeline that derives from a parent with 5 layers
|
|
* can become a STATE_LAYERS authority by simply changing it's
|
|
* ->n_layers count to 4 and in that case it can still defer to its
|
|
* ancestors to define the state of those 4 layers.
|
|
*
|
|
* If a pipeline depends on any ancestors for layer state then we
|
|
* immediatly bail out.
|
|
*/
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_LAYERS)
|
|
{
|
|
if (pipeline->n_layers != g_list_length (pipeline->layer_differences))
|
|
return;
|
|
}
|
|
|
|
/* walk up past ancestors that are now redundant and potentially
|
|
* reparent the pipeline. */
|
|
while (_cogl_pipeline_get_parent (new_parent) &&
|
|
(new_parent->differences | pipeline->differences) ==
|
|
pipeline->differences)
|
|
new_parent = _cogl_pipeline_get_parent (new_parent);
|
|
|
|
if (new_parent != _cogl_pipeline_get_parent (pipeline))
|
|
{
|
|
gboolean is_weak = _cogl_pipeline_is_weak (pipeline);
|
|
_cogl_pipeline_set_parent (pipeline, new_parent, is_weak ? FALSE : TRUE);
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_update_authority (CoglPipeline *pipeline,
|
|
CoglPipeline *authority,
|
|
CoglPipelineState state,
|
|
CoglPipelineStateComparitor comparitor)
|
|
{
|
|
/* If we are the current authority see if we can revert to one of
|
|
* our ancestors being the authority */
|
|
if (pipeline == authority &&
|
|
_cogl_pipeline_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipeline *parent = _cogl_pipeline_get_parent (authority);
|
|
CoglPipeline *old_authority =
|
|
_cogl_pipeline_get_authority (parent, state);
|
|
|
|
if (comparitor (authority, old_authority))
|
|
pipeline->differences &= ~state;
|
|
}
|
|
else if (pipeline != authority)
|
|
{
|
|
/* If we weren't previously the authority on this state then we
|
|
* need to extended our differences mask and so it's possible
|
|
* that some of our ancestry will now become redundant, so we
|
|
* aim to reparent ourselves if that's true... */
|
|
pipeline->differences |= state;
|
|
_cogl_pipeline_prune_redundant_ancestry (pipeline);
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_color (CoglPipeline *pipeline,
|
|
const CoglColor *color)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_COLOR;
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
if (cogl_color_equal (color, &authority->color))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, color, FALSE);
|
|
|
|
pipeline->color = *color;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_color_equal);
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_color4ub (CoglPipeline *pipeline,
|
|
guint8 red,
|
|
guint8 green,
|
|
guint8 blue,
|
|
guint8 alpha)
|
|
{
|
|
CoglColor color;
|
|
cogl_color_init_from_4ub (&color, red, green, blue, alpha);
|
|
cogl_pipeline_set_color (pipeline, &color);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_color4f (CoglPipeline *pipeline,
|
|
float red,
|
|
float green,
|
|
float blue,
|
|
float alpha)
|
|
{
|
|
CoglColor color;
|
|
cogl_color_init_from_4f (&color, red, green, blue, alpha);
|
|
cogl_pipeline_set_color (pipeline, &color);
|
|
}
|
|
|
|
CoglPipelineBlendEnable
|
|
_cogl_pipeline_get_blend_enabled (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_BLEND_ENABLE);
|
|
return authority->blend_enable;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_pipeline_blend_enable_equal (CoglPipeline *authority0,
|
|
CoglPipeline *authority1)
|
|
{
|
|
return authority0->blend_enable == authority1->blend_enable ? TRUE : FALSE;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_set_blend_enabled (CoglPipeline *pipeline,
|
|
CoglPipelineBlendEnable enable)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_BLEND_ENABLE;
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
g_return_if_fail (enable > 1 &&
|
|
"don't pass TRUE or FALSE to _set_blend_enabled!");
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
if (authority->blend_enable == enable)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
pipeline->blend_enable = enable;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_blend_enable_equal);
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_get_ambient (CoglPipeline *pipeline,
|
|
CoglColor *ambient)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
|
|
|
|
cogl_color_init_from_4fv (ambient,
|
|
authority->big_state->lighting_state.ambient);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_ambient (CoglPipeline *pipeline,
|
|
const CoglColor *ambient)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
|
|
CoglPipeline *authority;
|
|
CoglPipelineLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
if (cogl_color_equal (ambient, &lighting_state->ambient))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
lighting_state = &pipeline->big_state->lighting_state;
|
|
lighting_state->ambient[0] = cogl_color_get_red_float (ambient);
|
|
lighting_state->ambient[1] = cogl_color_get_green_float (ambient);
|
|
lighting_state->ambient[2] = cogl_color_get_blue_float (ambient);
|
|
lighting_state->ambient[3] = cogl_color_get_alpha_float (ambient);
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_lighting_state_equal);
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_get_diffuse (CoglPipeline *pipeline,
|
|
CoglColor *diffuse)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
|
|
|
|
cogl_color_init_from_4fv (diffuse,
|
|
authority->big_state->lighting_state.diffuse);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_diffuse (CoglPipeline *pipeline,
|
|
const CoglColor *diffuse)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
|
|
CoglPipeline *authority;
|
|
CoglPipelineLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
if (cogl_color_equal (diffuse, &lighting_state->diffuse))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
lighting_state = &pipeline->big_state->lighting_state;
|
|
lighting_state->diffuse[0] = cogl_color_get_red_float (diffuse);
|
|
lighting_state->diffuse[1] = cogl_color_get_green_float (diffuse);
|
|
lighting_state->diffuse[2] = cogl_color_get_blue_float (diffuse);
|
|
lighting_state->diffuse[3] = cogl_color_get_alpha_float (diffuse);
|
|
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_lighting_state_equal);
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_ambient_and_diffuse (CoglPipeline *pipeline,
|
|
const CoglColor *color)
|
|
{
|
|
cogl_pipeline_set_ambient (pipeline, color);
|
|
cogl_pipeline_set_diffuse (pipeline, color);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_get_specular (CoglPipeline *pipeline,
|
|
CoglColor *specular)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
|
|
|
|
cogl_color_init_from_4fv (specular,
|
|
authority->big_state->lighting_state.specular);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_specular (CoglPipeline *pipeline, const CoglColor *specular)
|
|
{
|
|
CoglPipeline *authority;
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
|
|
CoglPipelineLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
if (cogl_color_equal (specular, &lighting_state->specular))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
lighting_state = &pipeline->big_state->lighting_state;
|
|
lighting_state->specular[0] = cogl_color_get_red_float (specular);
|
|
lighting_state->specular[1] = cogl_color_get_green_float (specular);
|
|
lighting_state->specular[2] = cogl_color_get_blue_float (specular);
|
|
lighting_state->specular[3] = cogl_color_get_alpha_float (specular);
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_lighting_state_equal);
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
}
|
|
|
|
float
|
|
cogl_pipeline_get_shininess (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), 0);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
|
|
|
|
return authority->big_state->lighting_state.shininess;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_shininess (CoglPipeline *pipeline,
|
|
float shininess)
|
|
{
|
|
CoglPipeline *authority;
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
|
|
CoglPipelineLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
if (shininess < 0.0)
|
|
{
|
|
g_warning ("Out of range shininess %f supplied for pipeline\n",
|
|
shininess);
|
|
return;
|
|
}
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
|
|
if (lighting_state->shininess == shininess)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
lighting_state = &pipeline->big_state->lighting_state;
|
|
lighting_state->shininess = shininess;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_lighting_state_equal);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_get_emission (CoglPipeline *pipeline,
|
|
CoglColor *emission)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
|
|
|
|
cogl_color_init_from_4fv (emission,
|
|
authority->big_state->lighting_state.emission);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_emission (CoglPipeline *pipeline, const CoglColor *emission)
|
|
{
|
|
CoglPipeline *authority;
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
|
|
CoglPipelineLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
if (cogl_color_equal (emission, &lighting_state->emission))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
lighting_state = &pipeline->big_state->lighting_state;
|
|
lighting_state->emission[0] = cogl_color_get_red_float (emission);
|
|
lighting_state->emission[1] = cogl_color_get_green_float (emission);
|
|
lighting_state->emission[2] = cogl_color_get_blue_float (emission);
|
|
lighting_state->emission[3] = cogl_color_get_alpha_float (emission);
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_lighting_state_equal);
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_set_alpha_test_function (CoglPipeline *pipeline,
|
|
CoglPipelineAlphaFunc alpha_func)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_ALPHA_FUNC;
|
|
CoglPipeline *authority;
|
|
CoglPipelineAlphaFuncState *alpha_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
alpha_state = &authority->big_state->alpha_state;
|
|
if (alpha_state->alpha_func == alpha_func)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
alpha_state = &pipeline->big_state->alpha_state;
|
|
alpha_state->alpha_func = alpha_func;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_alpha_func_state_equal);
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_set_alpha_test_function_reference (CoglPipeline *pipeline,
|
|
float alpha_reference)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_ALPHA_FUNC_REFERENCE;
|
|
CoglPipeline *authority;
|
|
CoglPipelineAlphaFuncState *alpha_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
alpha_state = &authority->big_state->alpha_state;
|
|
if (alpha_state->alpha_func_reference == alpha_reference)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
alpha_state = &pipeline->big_state->alpha_state;
|
|
alpha_state->alpha_func_reference = alpha_reference;
|
|
|
|
_cogl_pipeline_update_authority
|
|
(pipeline, authority, state,
|
|
_cogl_pipeline_alpha_func_reference_state_equal);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_alpha_test_function (CoglPipeline *pipeline,
|
|
CoglPipelineAlphaFunc alpha_func,
|
|
float alpha_reference)
|
|
{
|
|
_cogl_pipeline_set_alpha_test_function (pipeline, alpha_func);
|
|
_cogl_pipeline_set_alpha_test_function_reference (pipeline, alpha_reference);
|
|
}
|
|
|
|
CoglPipelineAlphaFunc
|
|
cogl_pipeline_get_alpha_test_function (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), 0);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_ALPHA_FUNC);
|
|
|
|
return authority->big_state->alpha_state.alpha_func;
|
|
}
|
|
|
|
float
|
|
cogl_pipeline_get_alpha_test_reference (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), 0.0f);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline,
|
|
COGL_PIPELINE_STATE_ALPHA_FUNC_REFERENCE);
|
|
|
|
return authority->big_state->alpha_state.alpha_func_reference;
|
|
}
|
|
|
|
GLenum
|
|
arg_to_gl_blend_factor (CoglBlendStringArgument *arg)
|
|
{
|
|
if (arg->source.is_zero)
|
|
return GL_ZERO;
|
|
if (arg->factor.is_one)
|
|
return GL_ONE;
|
|
else if (arg->factor.is_src_alpha_saturate)
|
|
return GL_SRC_ALPHA_SATURATE;
|
|
else if (arg->factor.source.info->type ==
|
|
COGL_BLEND_STRING_COLOR_SOURCE_SRC_COLOR)
|
|
{
|
|
if (arg->factor.source.mask != COGL_BLEND_STRING_CHANNEL_MASK_ALPHA)
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_SRC_COLOR;
|
|
else
|
|
return GL_SRC_COLOR;
|
|
}
|
|
else
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_SRC_ALPHA;
|
|
else
|
|
return GL_SRC_ALPHA;
|
|
}
|
|
}
|
|
else if (arg->factor.source.info->type ==
|
|
COGL_BLEND_STRING_COLOR_SOURCE_DST_COLOR)
|
|
{
|
|
if (arg->factor.source.mask != COGL_BLEND_STRING_CHANNEL_MASK_ALPHA)
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_DST_COLOR;
|
|
else
|
|
return GL_DST_COLOR;
|
|
}
|
|
else
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_DST_ALPHA;
|
|
else
|
|
return GL_DST_ALPHA;
|
|
}
|
|
}
|
|
#ifndef HAVE_COGL_GLES
|
|
else if (arg->factor.source.info->type ==
|
|
COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT)
|
|
{
|
|
if (arg->factor.source.mask != COGL_BLEND_STRING_CHANNEL_MASK_ALPHA)
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_CONSTANT_COLOR;
|
|
else
|
|
return GL_CONSTANT_COLOR;
|
|
}
|
|
else
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_CONSTANT_ALPHA;
|
|
else
|
|
return GL_CONSTANT_ALPHA;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
g_warning ("Unable to determine valid blend factor from blend string\n");
|
|
return GL_ONE;
|
|
}
|
|
|
|
void
|
|
setup_blend_state (CoglBlendStringStatement *statement,
|
|
GLenum *blend_equation,
|
|
GLint *blend_src_factor,
|
|
GLint *blend_dst_factor)
|
|
{
|
|
#ifndef HAVE_COGL_GLES
|
|
switch (statement->function->type)
|
|
{
|
|
case COGL_BLEND_STRING_FUNCTION_ADD:
|
|
*blend_equation = GL_FUNC_ADD;
|
|
break;
|
|
/* TODO - add more */
|
|
default:
|
|
g_warning ("Unsupported blend function given");
|
|
*blend_equation = GL_FUNC_ADD;
|
|
}
|
|
#endif
|
|
|
|
*blend_src_factor = arg_to_gl_blend_factor (&statement->args[0]);
|
|
*blend_dst_factor = arg_to_gl_blend_factor (&statement->args[1]);
|
|
}
|
|
|
|
gboolean
|
|
cogl_pipeline_set_blend (CoglPipeline *pipeline,
|
|
const char *blend_description,
|
|
GError **error)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_BLEND;
|
|
CoglPipeline *authority;
|
|
CoglBlendStringStatement statements[2];
|
|
CoglBlendStringStatement *rgb;
|
|
CoglBlendStringStatement *a;
|
|
GError *internal_error = NULL;
|
|
int count;
|
|
CoglPipelineBlendState *blend_state;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
count =
|
|
_cogl_blend_string_compile (blend_description,
|
|
COGL_BLEND_STRING_CONTEXT_BLENDING,
|
|
statements,
|
|
&internal_error);
|
|
if (!count)
|
|
{
|
|
if (error)
|
|
g_propagate_error (error, internal_error);
|
|
else
|
|
{
|
|
g_warning ("Cannot compile blend description: %s\n",
|
|
internal_error->message);
|
|
g_error_free (internal_error);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if (count == 1)
|
|
rgb = a = statements;
|
|
else
|
|
{
|
|
rgb = &statements[0];
|
|
a = &statements[1];
|
|
}
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
blend_state = &pipeline->big_state->blend_state;
|
|
#ifndef HAVE_COGL_GLES
|
|
setup_blend_state (rgb,
|
|
&blend_state->blend_equation_rgb,
|
|
&blend_state->blend_src_factor_rgb,
|
|
&blend_state->blend_dst_factor_rgb);
|
|
setup_blend_state (a,
|
|
&blend_state->blend_equation_alpha,
|
|
&blend_state->blend_src_factor_alpha,
|
|
&blend_state->blend_dst_factor_alpha);
|
|
#else
|
|
setup_blend_state (rgb,
|
|
NULL,
|
|
&blend_state->blend_src_factor_rgb,
|
|
&blend_state->blend_dst_factor_rgb);
|
|
#endif
|
|
|
|
/* If we are the current authority see if we can revert to one of our
|
|
* ancestors being the authority */
|
|
if (pipeline == authority &&
|
|
_cogl_pipeline_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipeline *parent = _cogl_pipeline_get_parent (authority);
|
|
CoglPipeline *old_authority =
|
|
_cogl_pipeline_get_authority (parent, state);
|
|
|
|
if (_cogl_pipeline_blend_state_equal (authority, old_authority))
|
|
pipeline->differences &= ~state;
|
|
}
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (pipeline != authority)
|
|
{
|
|
pipeline->differences |= state;
|
|
_cogl_pipeline_prune_redundant_ancestry (pipeline);
|
|
}
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_blend_constant (CoglPipeline *pipeline,
|
|
const CoglColor *constant_color)
|
|
{
|
|
#ifndef HAVE_COGL_GLES
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_BLEND;
|
|
CoglPipeline *authority;
|
|
CoglPipelineBlendState *blend_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
blend_state = &authority->big_state->blend_state;
|
|
if (cogl_color_equal (constant_color, &blend_state->blend_constant))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
blend_state = &pipeline->big_state->blend_state;
|
|
blend_state->blend_constant = *constant_color;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_blend_state_equal);
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
#endif
|
|
}
|
|
|
|
CoglHandle
|
|
cogl_pipeline_get_user_program (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), COGL_INVALID_HANDLE);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_USER_SHADER);
|
|
|
|
return authority->big_state->user_program;
|
|
}
|
|
|
|
/* XXX: for now we don't mind if the program has vertex shaders
|
|
* attached but if we ever make a similar API public we should only
|
|
* allow attaching of programs containing fragment shaders. Eventually
|
|
* we will have a CoglPipeline abstraction to also cover vertex
|
|
* processing.
|
|
*/
|
|
void
|
|
cogl_pipeline_set_user_program (CoglPipeline *pipeline,
|
|
CoglHandle program)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_USER_SHADER;
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
if (authority->big_state->user_program == program)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
if (program != COGL_INVALID_HANDLE)
|
|
_cogl_pipeline_set_backend (pipeline, COGL_PIPELINE_BACKEND_DEFAULT);
|
|
|
|
/* If we are the current authority see if we can revert to one of our
|
|
* ancestors being the authority */
|
|
if (pipeline == authority &&
|
|
_cogl_pipeline_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipeline *parent = _cogl_pipeline_get_parent (authority);
|
|
CoglPipeline *old_authority =
|
|
_cogl_pipeline_get_authority (parent, state);
|
|
|
|
if (old_authority->big_state->user_program == program)
|
|
pipeline->differences &= ~state;
|
|
}
|
|
else if (pipeline != authority)
|
|
{
|
|
/* If we weren't previously the authority on this state then we
|
|
* need to extended our differences mask and so it's possible
|
|
* that some of our ancestry will now become redundant, so we
|
|
* aim to reparent ourselves if that's true... */
|
|
pipeline->differences |= state;
|
|
_cogl_pipeline_prune_redundant_ancestry (pipeline);
|
|
}
|
|
|
|
if (program != COGL_INVALID_HANDLE)
|
|
cogl_handle_ref (program);
|
|
if (authority == pipeline &&
|
|
pipeline->big_state->user_program != COGL_INVALID_HANDLE)
|
|
cogl_handle_unref (pipeline->big_state->user_program);
|
|
pipeline->big_state->user_program = program;
|
|
|
|
handle_automatic_blend_enable (pipeline, state);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_depth_test_enabled (CoglPipeline *pipeline,
|
|
gboolean enable)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_DEPTH;
|
|
CoglPipeline *authority;
|
|
CoglPipelineDepthState *depth_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
depth_state = &authority->big_state->depth_state;
|
|
if (depth_state->depth_test_enabled == enable)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
pipeline->big_state->depth_state.depth_test_enabled = enable;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_depth_state_equal);
|
|
}
|
|
|
|
gboolean
|
|
cogl_pipeline_get_depth_test_enabled (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_DEPTH);
|
|
|
|
return authority->big_state->depth_state.depth_test_enabled;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_depth_writing_enabled (CoglPipeline *pipeline,
|
|
gboolean enable)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_DEPTH;
|
|
CoglPipeline *authority;
|
|
CoglPipelineDepthState *depth_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
depth_state = &authority->big_state->depth_state;
|
|
if (depth_state->depth_writing_enabled == enable)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
pipeline->big_state->depth_state.depth_writing_enabled = enable;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_depth_state_equal);
|
|
}
|
|
|
|
gboolean
|
|
cogl_pipeline_get_depth_writing_enabled (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), TRUE);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_DEPTH);
|
|
|
|
return authority->big_state->depth_state.depth_writing_enabled;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_depth_test_function (CoglPipeline *pipeline,
|
|
CoglDepthTestFunction function)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_DEPTH;
|
|
CoglPipeline *authority;
|
|
CoglPipelineDepthState *depth_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
depth_state = &authority->big_state->depth_state;
|
|
if (depth_state->depth_test_function == function)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
pipeline->big_state->depth_state.depth_test_function = function;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_depth_state_equal);
|
|
}
|
|
|
|
CoglDepthTestFunction
|
|
cogl_pipeline_get_depth_test_function (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline),
|
|
COGL_DEPTH_TEST_FUNCTION_LESS);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_DEPTH);
|
|
|
|
return authority->big_state->depth_state.depth_test_function;
|
|
}
|
|
|
|
|
|
gboolean
|
|
cogl_pipeline_set_depth_range (CoglPipeline *pipeline,
|
|
float near_val,
|
|
float far_val,
|
|
GError **error)
|
|
{
|
|
#ifndef COGL_HAS_GLES
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_DEPTH;
|
|
CoglPipeline *authority;
|
|
CoglPipelineDepthState *depth_state;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
depth_state = &authority->big_state->depth_state;
|
|
if (depth_state->depth_range_near == near_val &&
|
|
depth_state->depth_range_far == far_val)
|
|
return TRUE;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
pipeline->big_state->depth_state.depth_range_near = near_val;
|
|
pipeline->big_state->depth_state.depth_range_far = far_val;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_depth_state_equal);
|
|
return TRUE;
|
|
#else
|
|
g_set_error (error,
|
|
COGL_ERROR,
|
|
COGL_ERROR_UNSUPPORTED,
|
|
"glDepthRange not available on GLES 1");
|
|
return FALSE;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_get_depth_range (CoglPipeline *pipeline,
|
|
float *near_val,
|
|
float *far_val)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_DEPTH);
|
|
|
|
*near_val = authority->big_state->depth_state.depth_range_near;
|
|
*far_val = authority->big_state->depth_state.depth_range_far;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_set_fog_state (CoglPipeline *pipeline,
|
|
const CoglPipelineFogState *fog_state)
|
|
{
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_FOG;
|
|
CoglPipeline *authority;
|
|
CoglPipelineFogState *current_fog_state;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
current_fog_state = &authority->big_state->fog_state;
|
|
|
|
if (current_fog_state->enabled == fog_state->enabled &&
|
|
cogl_color_equal (¤t_fog_state->color, &fog_state->color) &&
|
|
current_fog_state->mode == fog_state->mode &&
|
|
current_fog_state->density == fog_state->density &&
|
|
current_fog_state->z_near == fog_state->z_near &&
|
|
current_fog_state->z_far == fog_state->z_far)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
pipeline->big_state->fog_state = *fog_state;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_fog_state_equal);
|
|
}
|
|
|
|
unsigned long
|
|
_cogl_pipeline_get_age (CoglPipeline *pipeline)
|
|
{
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), 0);
|
|
|
|
return pipeline->age;
|
|
}
|
|
|
|
static CoglPipelineLayer *
|
|
_cogl_pipeline_layer_copy (CoglPipelineLayer *src)
|
|
{
|
|
CoglPipelineLayer *layer = g_slice_new (CoglPipelineLayer);
|
|
int i;
|
|
|
|
_cogl_pipeline_node_init (COGL_PIPELINE_NODE (layer));
|
|
|
|
layer->owner = NULL;
|
|
layer->index = src->index;
|
|
layer->differences = 0;
|
|
layer->has_big_state = FALSE;
|
|
|
|
for (i = 0; i < COGL_PIPELINE_N_BACKENDS; i++)
|
|
layer->backend_priv[i] = NULL;
|
|
|
|
_cogl_pipeline_layer_set_parent (layer, src);
|
|
|
|
return _cogl_pipeline_layer_object_new (layer);
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_layer_free (CoglPipelineLayer *layer)
|
|
{
|
|
int i;
|
|
|
|
_cogl_pipeline_layer_unparent (COGL_PIPELINE_NODE (layer));
|
|
|
|
/* NB: layers may be used by multiple pipelines which may be using
|
|
* different backends, therefore we determine which backends to
|
|
* notify based on the private state pointers for each backend...
|
|
*/
|
|
for (i = 0; i < COGL_PIPELINE_N_BACKENDS; i++)
|
|
{
|
|
if (layer->backend_priv[i] &&
|
|
_cogl_pipeline_backends[i]->free_layer_priv)
|
|
{
|
|
const CoglPipelineBackend *backend = _cogl_pipeline_backends[i];
|
|
backend->free_layer_priv (layer);
|
|
}
|
|
}
|
|
|
|
if (layer->differences & COGL_PIPELINE_LAYER_STATE_TEXTURE &&
|
|
layer->texture != COGL_INVALID_HANDLE)
|
|
cogl_handle_unref (layer->texture);
|
|
|
|
if (layer->differences & COGL_PIPELINE_LAYER_STATE_NEEDS_BIG_STATE)
|
|
g_slice_free (CoglPipelineLayerBigState, layer->big_state);
|
|
|
|
g_slice_free (CoglPipelineLayer, layer);
|
|
}
|
|
|
|
/* If a layer has descendants we can't modify it freely
|
|
*
|
|
* If the layer is owned and the owner has descendants we can't
|
|
* modify it freely.
|
|
*
|
|
* In both cases when we can't freely modify a layer we can either:
|
|
* - create a new layer; splice it in to replace the layer so it can
|
|
* be directly modified.
|
|
* XXX: disadvantage is that we have to invalidate the layers_cache
|
|
* for the owner and its descendants.
|
|
* - create a new derived layer and modify that.
|
|
*/
|
|
|
|
/* XXX: how is the caller expected to deal with ref-counting?
|
|
*
|
|
* If the layer can't be freely modified and we return a new layer
|
|
* then that will effectively make the caller own a new reference
|
|
* which doesn't happen if we simply modify the given layer.
|
|
*
|
|
* We could make it consistent by taking a reference on the layer if
|
|
* we don't create a new one. At least this way the caller could
|
|
* deal with it consistently, though the semantics are a bit
|
|
* strange.
|
|
*
|
|
* Alternatively we could leave it to the caller to check
|
|
* ...?
|
|
*/
|
|
|
|
void
|
|
_cogl_pipeline_init_default_layers (void)
|
|
{
|
|
CoglPipelineLayer *layer = g_slice_new0 (CoglPipelineLayer);
|
|
CoglPipelineLayerBigState *big_state =
|
|
g_slice_new0 (CoglPipelineLayerBigState);
|
|
CoglPipelineLayer *new;
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
_cogl_pipeline_node_init (COGL_PIPELINE_NODE (layer));
|
|
|
|
layer->index = 0;
|
|
|
|
for (i = 0; i < COGL_PIPELINE_N_BACKENDS; i++)
|
|
layer->backend_priv[i] = NULL;
|
|
|
|
layer->differences = COGL_PIPELINE_LAYER_STATE_ALL_SPARSE;
|
|
|
|
layer->unit_index = 0;
|
|
|
|
layer->texture = COGL_INVALID_HANDLE;
|
|
|
|
layer->mag_filter = COGL_PIPELINE_FILTER_LINEAR;
|
|
layer->min_filter = COGL_PIPELINE_FILTER_LINEAR;
|
|
|
|
layer->wrap_mode_s = COGL_PIPELINE_WRAP_MODE_AUTOMATIC;
|
|
layer->wrap_mode_t = COGL_PIPELINE_WRAP_MODE_AUTOMATIC;
|
|
layer->wrap_mode_p = COGL_PIPELINE_WRAP_MODE_AUTOMATIC;
|
|
|
|
layer->big_state = big_state;
|
|
layer->has_big_state = TRUE;
|
|
|
|
/* Choose the same default combine mode as OpenGL:
|
|
* RGBA = MODULATE(PREVIOUS[RGBA],TEXTURE[RGBA]) */
|
|
big_state->texture_combine_rgb_func = GL_MODULATE;
|
|
big_state->texture_combine_rgb_src[0] = GL_PREVIOUS;
|
|
big_state->texture_combine_rgb_src[1] = GL_TEXTURE;
|
|
big_state->texture_combine_rgb_op[0] = GL_SRC_COLOR;
|
|
big_state->texture_combine_rgb_op[1] = GL_SRC_COLOR;
|
|
big_state->texture_combine_alpha_func = GL_MODULATE;
|
|
big_state->texture_combine_alpha_src[0] = GL_PREVIOUS;
|
|
big_state->texture_combine_alpha_src[1] = GL_TEXTURE;
|
|
big_state->texture_combine_alpha_op[0] = GL_SRC_ALPHA;
|
|
big_state->texture_combine_alpha_op[1] = GL_SRC_ALPHA;
|
|
|
|
big_state->point_sprite_coords = FALSE;
|
|
|
|
cogl_matrix_init_identity (&big_state->matrix);
|
|
|
|
ctx->default_layer_0 = _cogl_pipeline_layer_object_new (layer);
|
|
|
|
/* TODO: we should make default_layer_n comprise of two
|
|
* descendants of default_layer_0:
|
|
* - the first descendant should change the texture combine
|
|
* to what we expect is most commonly used for multitexturing
|
|
* - the second should revert the above change.
|
|
*
|
|
* why? the documentation for how a new layer is initialized
|
|
* doesn't say that layers > 0 have different defaults so unless
|
|
* we change the documentation we can't use different defaults,
|
|
* but if the user does what we expect and changes the
|
|
* texture combine then we can revert the authority to the
|
|
* first descendant which means we can maximize the number
|
|
* of layers with a common ancestor.
|
|
*
|
|
* The main problem will be that we'll need to disable the
|
|
* optimizations for flattening the ancestry when we make
|
|
* the second descendant which reverts the state.
|
|
*/
|
|
ctx->default_layer_n = _cogl_pipeline_layer_copy (layer);
|
|
new = _cogl_pipeline_set_layer_unit (NULL, ctx->default_layer_n, 1);
|
|
g_assert (new == ctx->default_layer_n);
|
|
/* Since we passed a newly allocated layer we don't expect that
|
|
* _set_layer_unit() will have to allocate *another* layer. */
|
|
|
|
/* Finally we create a dummy dependant for ->default_layer_n which
|
|
* effectively ensures that ->default_layer_n and ->default_layer_0
|
|
* remain immutable.
|
|
*/
|
|
ctx->dummy_layer_dependant =
|
|
_cogl_pipeline_layer_copy (ctx->default_layer_n);
|
|
}
|
|
|
|
static void
|
|
setup_texture_combine_state (CoglBlendStringStatement *statement,
|
|
GLint *texture_combine_func,
|
|
GLint *texture_combine_src,
|
|
GLint *texture_combine_op)
|
|
{
|
|
int i;
|
|
|
|
switch (statement->function->type)
|
|
{
|
|
case COGL_BLEND_STRING_FUNCTION_REPLACE:
|
|
*texture_combine_func = GL_REPLACE;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_MODULATE:
|
|
*texture_combine_func = GL_MODULATE;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_ADD:
|
|
*texture_combine_func = GL_ADD;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_ADD_SIGNED:
|
|
*texture_combine_func = GL_ADD_SIGNED;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_INTERPOLATE:
|
|
*texture_combine_func = GL_INTERPOLATE;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_SUBTRACT:
|
|
*texture_combine_func = GL_SUBTRACT;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_DOT3_RGB:
|
|
*texture_combine_func = GL_DOT3_RGB;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_DOT3_RGBA:
|
|
*texture_combine_func = GL_DOT3_RGBA;
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < statement->function->argc; i++)
|
|
{
|
|
CoglBlendStringArgument *arg = &statement->args[i];
|
|
|
|
switch (arg->source.info->type)
|
|
{
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT:
|
|
texture_combine_src[i] = GL_CONSTANT;
|
|
break;
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE:
|
|
texture_combine_src[i] = GL_TEXTURE;
|
|
break;
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE_N:
|
|
texture_combine_src[i] =
|
|
GL_TEXTURE0 + arg->source.texture;
|
|
break;
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_PRIMARY:
|
|
texture_combine_src[i] = GL_PRIMARY_COLOR;
|
|
break;
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_PREVIOUS:
|
|
texture_combine_src[i] = GL_PREVIOUS;
|
|
break;
|
|
default:
|
|
g_warning ("Unexpected texture combine source");
|
|
texture_combine_src[i] = GL_TEXTURE;
|
|
}
|
|
|
|
if (arg->source.mask == COGL_BLEND_STRING_CHANNEL_MASK_RGB)
|
|
{
|
|
if (statement->args[i].source.one_minus)
|
|
texture_combine_op[i] = GL_ONE_MINUS_SRC_COLOR;
|
|
else
|
|
texture_combine_op[i] = GL_SRC_COLOR;
|
|
}
|
|
else
|
|
{
|
|
if (statement->args[i].source.one_minus)
|
|
texture_combine_op[i] = GL_ONE_MINUS_SRC_ALPHA;
|
|
else
|
|
texture_combine_op[i] = GL_SRC_ALPHA;
|
|
}
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
cogl_pipeline_set_layer_combine (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
const char *combine_description,
|
|
GError **error)
|
|
{
|
|
CoglPipelineLayerState state = COGL_PIPELINE_LAYER_STATE_COMBINE;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineLayer *layer;
|
|
CoglBlendStringStatement statements[2];
|
|
CoglBlendStringStatement split[2];
|
|
CoglBlendStringStatement *rgb;
|
|
CoglBlendStringStatement *a;
|
|
GError *internal_error = NULL;
|
|
int count;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, state);
|
|
|
|
count =
|
|
_cogl_blend_string_compile (combine_description,
|
|
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE,
|
|
statements,
|
|
&internal_error);
|
|
if (!count)
|
|
{
|
|
if (error)
|
|
g_propagate_error (error, internal_error);
|
|
else
|
|
{
|
|
g_warning ("Cannot compile combine description: %s\n",
|
|
internal_error->message);
|
|
g_error_free (internal_error);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if (statements[0].mask == COGL_BLEND_STRING_CHANNEL_MASK_RGBA)
|
|
{
|
|
_cogl_blend_string_split_rgba_statement (statements,
|
|
&split[0], &split[1]);
|
|
rgb = &split[0];
|
|
a = &split[1];
|
|
}
|
|
else
|
|
{
|
|
rgb = &statements[0];
|
|
a = &statements[1];
|
|
}
|
|
|
|
/* FIXME: compare the new state with the current state! */
|
|
|
|
/* possibly flush primitives referencing the current state... */
|
|
layer = _cogl_pipeline_layer_pre_change_notify (pipeline, layer, state);
|
|
|
|
setup_texture_combine_state (rgb,
|
|
&layer->big_state->texture_combine_rgb_func,
|
|
layer->big_state->texture_combine_rgb_src,
|
|
layer->big_state->texture_combine_rgb_op);
|
|
|
|
setup_texture_combine_state (a,
|
|
&layer->big_state->texture_combine_alpha_func,
|
|
layer->big_state->texture_combine_alpha_src,
|
|
layer->big_state->texture_combine_alpha_op);
|
|
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_pipeline_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipelineLayer *parent = _cogl_pipeline_layer_get_parent (authority);
|
|
CoglPipelineLayer *old_authority =
|
|
_cogl_pipeline_layer_get_authority (parent, state);
|
|
|
|
if (_cogl_pipeline_layer_combine_state_equal (authority,
|
|
old_authority))
|
|
{
|
|
layer->differences &= ~state;
|
|
|
|
g_assert (layer->owner == pipeline);
|
|
if (layer->differences == 0)
|
|
_cogl_pipeline_prune_empty_layer_difference (pipeline,
|
|
layer);
|
|
goto changed;
|
|
}
|
|
}
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= state;
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
changed:
|
|
|
|
handle_automatic_blend_enable (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_layer_combine_constant (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
const CoglColor *constant_color)
|
|
{
|
|
CoglPipelineLayerState state = COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineLayer *new;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, state);
|
|
|
|
if (memcmp (authority->big_state->texture_combine_constant,
|
|
constant_color, sizeof (float) * 4) == 0)
|
|
return;
|
|
|
|
new = _cogl_pipeline_layer_pre_change_notify (pipeline, layer, state);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_pipeline_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipelineLayer *parent =
|
|
_cogl_pipeline_layer_get_parent (authority);
|
|
CoglPipelineLayer *old_authority =
|
|
_cogl_pipeline_layer_get_authority (parent, state);
|
|
CoglPipelineLayerBigState *old_big_state = old_authority->big_state;
|
|
|
|
if (memcmp (old_big_state->texture_combine_constant,
|
|
constant_color, sizeof (float) * 4) == 0)
|
|
{
|
|
layer->differences &= ~state;
|
|
|
|
g_assert (layer->owner == pipeline);
|
|
if (layer->differences == 0)
|
|
_cogl_pipeline_prune_empty_layer_difference (pipeline,
|
|
layer);
|
|
goto changed;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->big_state->texture_combine_constant[0] =
|
|
cogl_color_get_red_float (constant_color);
|
|
layer->big_state->texture_combine_constant[1] =
|
|
cogl_color_get_green_float (constant_color);
|
|
layer->big_state->texture_combine_constant[2] =
|
|
cogl_color_get_blue_float (constant_color);
|
|
layer->big_state->texture_combine_constant[3] =
|
|
cogl_color_get_alpha_float (constant_color);
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= state;
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
changed:
|
|
|
|
handle_automatic_blend_enable (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_get_layer_combine_constant (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
float *constant)
|
|
{
|
|
CoglPipelineLayerState change =
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
/* FIXME: we shouldn't ever construct a layer in a getter function */
|
|
|
|
authority = _cogl_pipeline_layer_get_authority (layer, change);
|
|
memcpy (constant, authority->big_state->texture_combine_constant,
|
|
sizeof (float) * 4);
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_layer_matrix (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
const CoglMatrix *matrix)
|
|
{
|
|
CoglPipelineLayerState state = COGL_PIPELINE_LAYER_STATE_USER_MATRIX;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineLayer *new;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, state);
|
|
|
|
if (cogl_matrix_equal (matrix, &authority->big_state->matrix))
|
|
return;
|
|
|
|
new = _cogl_pipeline_layer_pre_change_notify (pipeline, layer, state);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_pipeline_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipelineLayer *parent =
|
|
_cogl_pipeline_layer_get_parent (authority);
|
|
CoglPipelineLayer *old_authority =
|
|
_cogl_pipeline_layer_get_authority (parent, state);
|
|
|
|
if (cogl_matrix_equal (matrix, &old_authority->big_state->matrix))
|
|
{
|
|
layer->differences &= ~state;
|
|
|
|
g_assert (layer->owner == pipeline);
|
|
if (layer->differences == 0)
|
|
_cogl_pipeline_prune_empty_layer_difference (pipeline,
|
|
layer);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->big_state->matrix = *matrix;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= state;
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_remove_layer (CoglPipeline *pipeline, int layer_index)
|
|
{
|
|
CoglPipeline *authority;
|
|
CoglPipelineLayerInfo layer_info;
|
|
int i;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
|
|
/* The layer index of the layer we want info about */
|
|
layer_info.layer_index = layer_index;
|
|
|
|
/* This will be updated with a reference to the layer being removed
|
|
* if it can be found. */
|
|
layer_info.layer = NULL;
|
|
|
|
/* This will be filled in with a list of layers that need to be
|
|
* dropped down to a lower texture unit to fill the gap of the
|
|
* removed layer. */
|
|
layer_info.layers_to_shift =
|
|
g_alloca (sizeof (CoglPipelineLayer *) * authority->n_layers);
|
|
layer_info.n_layers_to_shift = 0;
|
|
|
|
/* Unlike when we query layer info when adding a layer we must
|
|
* always have a complete layers_to_shift list... */
|
|
layer_info.ignore_shift_layers_if_found = FALSE;
|
|
|
|
_cogl_pipeline_get_layer_info (authority, &layer_info);
|
|
|
|
if (layer_info.layer == NULL)
|
|
return;
|
|
|
|
for (i = 0; i < layer_info.n_layers_to_shift; i++)
|
|
{
|
|
CoglPipelineLayer *shift_layer = layer_info.layers_to_shift[i];
|
|
int unit_index = _cogl_pipeline_layer_get_unit_index (shift_layer);
|
|
_cogl_pipeline_set_layer_unit (pipeline, shift_layer, unit_index - 1);
|
|
/* NB: shift_layer may not be writeable so _set_layer_unit()
|
|
* will allocate a derived layer internally which will become
|
|
* owned by pipeline. Check the return value if we need to do
|
|
* anything else with this layer. */
|
|
}
|
|
|
|
_cogl_pipeline_remove_layer_difference (pipeline, layer_info.layer, TRUE);
|
|
_cogl_pipeline_try_reverting_layers_authority (pipeline, NULL);
|
|
|
|
handle_automatic_blend_enable (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
}
|
|
|
|
static gboolean
|
|
prepend_layer_to_list_cb (CoglPipelineLayer *layer,
|
|
void *user_data)
|
|
{
|
|
GList **layers = user_data;
|
|
|
|
*layers = g_list_prepend (*layers, layer);
|
|
return TRUE;
|
|
}
|
|
|
|
/* TODO: deprecate this API and replace it with
|
|
* cogl_pipeline_foreach_layer
|
|
* TODO: update the docs to note that if the user modifies any layers
|
|
* then the list may become invalid.
|
|
*/
|
|
const GList *
|
|
_cogl_pipeline_get_layers (CoglPipeline *pipeline)
|
|
{
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), NULL);
|
|
|
|
if (!pipeline->deprecated_get_layers_list_dirty)
|
|
g_list_free (pipeline->deprecated_get_layers_list);
|
|
|
|
pipeline->deprecated_get_layers_list = NULL;
|
|
|
|
_cogl_pipeline_foreach_layer_internal (pipeline,
|
|
prepend_layer_to_list_cb,
|
|
&pipeline->deprecated_get_layers_list);
|
|
pipeline->deprecated_get_layers_list =
|
|
g_list_reverse (pipeline->deprecated_get_layers_list);
|
|
|
|
pipeline->deprecated_get_layers_list_dirty = 0;
|
|
|
|
return pipeline->deprecated_get_layers_list;
|
|
}
|
|
|
|
int
|
|
cogl_pipeline_get_n_layers (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (pipeline), 0);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LAYERS);
|
|
|
|
return authority->n_layers;
|
|
}
|
|
|
|
/* FIXME: deprecate and replace with
|
|
* cogl_pipeline_get_layer_texture() instead. */
|
|
CoglHandle
|
|
_cogl_pipeline_layer_get_texture (CoglPipelineLayer *layer)
|
|
{
|
|
g_return_val_if_fail (_cogl_is_pipeline_layer (layer),
|
|
COGL_INVALID_HANDLE);
|
|
|
|
return _cogl_pipeline_layer_get_texture_real (layer);
|
|
}
|
|
|
|
gboolean
|
|
_cogl_pipeline_layer_has_user_matrix (CoglPipeline *pipeline,
|
|
int layer_index)
|
|
{
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_USER_MATRIX);
|
|
|
|
/* If the authority is the default pipeline then no, otherwise yes */
|
|
return _cogl_pipeline_layer_get_parent (authority) ? TRUE : FALSE;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_layer_get_filters (CoglPipelineLayer *layer,
|
|
CoglPipelineFilter *min_filter,
|
|
CoglPipelineFilter *mag_filter)
|
|
{
|
|
CoglPipelineLayer *authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_FILTERS);
|
|
|
|
*min_filter = authority->min_filter;
|
|
*mag_filter = authority->mag_filter;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_get_layer_filters (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineFilter *min_filter,
|
|
CoglPipelineFilter *mag_filter)
|
|
{
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_FILTERS);
|
|
|
|
*min_filter = authority->min_filter;
|
|
*mag_filter = authority->mag_filter;
|
|
}
|
|
|
|
CoglPipelineFilter
|
|
_cogl_pipeline_get_layer_min_filter (CoglPipeline *pipeline,
|
|
int layer_index)
|
|
{
|
|
CoglPipelineFilter min_filter;
|
|
CoglPipelineFilter mag_filter;
|
|
|
|
_cogl_pipeline_get_layer_filters (pipeline, layer_index,
|
|
&min_filter, &mag_filter);
|
|
return min_filter;
|
|
}
|
|
|
|
CoglPipelineFilter
|
|
_cogl_pipeline_get_layer_mag_filter (CoglPipeline *pipeline,
|
|
int layer_index)
|
|
{
|
|
CoglPipelineFilter min_filter;
|
|
CoglPipelineFilter mag_filter;
|
|
|
|
_cogl_pipeline_get_layer_filters (pipeline, layer_index,
|
|
&min_filter, &mag_filter);
|
|
return mag_filter;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_layer_pre_paint (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayer *texture_authority;
|
|
|
|
texture_authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_TEXTURE);
|
|
|
|
if (texture_authority->texture != COGL_INVALID_HANDLE)
|
|
{
|
|
CoglTexturePrePaintFlags flags = 0;
|
|
CoglPipelineFilter min_filter;
|
|
CoglPipelineFilter mag_filter;
|
|
|
|
_cogl_pipeline_layer_get_filters (layer, &min_filter, &mag_filter);
|
|
|
|
if (min_filter == COGL_PIPELINE_FILTER_NEAREST_MIPMAP_NEAREST
|
|
|| min_filter == COGL_PIPELINE_FILTER_LINEAR_MIPMAP_NEAREST
|
|
|| min_filter == COGL_PIPELINE_FILTER_NEAREST_MIPMAP_LINEAR
|
|
|| min_filter == COGL_PIPELINE_FILTER_LINEAR_MIPMAP_LINEAR)
|
|
flags |= COGL_TEXTURE_NEEDS_MIPMAP;
|
|
|
|
_cogl_texture_pre_paint (texture_authority->texture, flags);
|
|
}
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_pre_paint_for_layer (CoglPipeline *pipeline,
|
|
int layer_id)
|
|
{
|
|
CoglPipelineLayer *layer = _cogl_pipeline_get_layer (pipeline, layer_id);
|
|
_cogl_pipeline_layer_pre_paint (layer);
|
|
}
|
|
|
|
CoglPipelineFilter
|
|
_cogl_pipeline_layer_get_min_filter (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_pipeline_layer (layer), 0);
|
|
|
|
authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_FILTERS);
|
|
|
|
return authority->min_filter;
|
|
}
|
|
|
|
CoglPipelineFilter
|
|
_cogl_pipeline_layer_get_mag_filter (CoglPipelineLayer *layer)
|
|
{
|
|
CoglPipelineLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_pipeline_layer (layer), 0);
|
|
|
|
authority =
|
|
_cogl_pipeline_layer_get_authority (layer,
|
|
COGL_PIPELINE_LAYER_STATE_FILTERS);
|
|
|
|
return authority->mag_filter;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_layer_filters (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineFilter min_filter,
|
|
CoglPipelineFilter mag_filter)
|
|
{
|
|
CoglPipelineLayerState state = COGL_PIPELINE_LAYER_STATE_FILTERS;
|
|
CoglPipelineLayer *layer;
|
|
CoglPipelineLayer *authority;
|
|
CoglPipelineLayer *new;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (pipeline));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* pipeline. If the layer is created then it will be owned by
|
|
* pipeline. */
|
|
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_pipeline_layer_get_authority (layer, state);
|
|
|
|
if (authority->min_filter == min_filter &&
|
|
authority->mag_filter == mag_filter)
|
|
return;
|
|
|
|
new = _cogl_pipeline_layer_pre_change_notify (pipeline, layer, state);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_pipeline_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglPipelineLayer *parent =
|
|
_cogl_pipeline_layer_get_parent (authority);
|
|
CoglPipelineLayer *old_authority =
|
|
_cogl_pipeline_layer_get_authority (parent, state);
|
|
|
|
if (old_authority->min_filter == min_filter &&
|
|
old_authority->mag_filter == mag_filter)
|
|
{
|
|
layer->differences &= ~state;
|
|
|
|
g_assert (layer->owner == pipeline);
|
|
if (layer->differences == 0)
|
|
_cogl_pipeline_prune_empty_layer_difference (pipeline,
|
|
layer);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->min_filter = min_filter;
|
|
layer->mag_filter = mag_filter;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= state;
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
}
|
|
|
|
float
|
|
cogl_pipeline_get_point_size (CoglHandle handle)
|
|
{
|
|
CoglPipeline *pipeline = COGL_PIPELINE (handle);
|
|
CoglPipeline *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_pipeline (handle), FALSE);
|
|
|
|
authority =
|
|
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_POINT_SIZE);
|
|
|
|
return authority->big_state->point_size;
|
|
}
|
|
|
|
void
|
|
cogl_pipeline_set_point_size (CoglHandle handle,
|
|
float point_size)
|
|
{
|
|
CoglPipeline *pipeline = COGL_PIPELINE (handle);
|
|
CoglPipelineState state = COGL_PIPELINE_STATE_POINT_SIZE;
|
|
CoglPipeline *authority;
|
|
|
|
g_return_if_fail (cogl_is_pipeline (handle));
|
|
|
|
authority = _cogl_pipeline_get_authority (pipeline, state);
|
|
|
|
if (authority->big_state->point_size == point_size)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the pipeline has no dependants so it may be modified.
|
|
* - If the pipeline isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
|
|
|
|
pipeline->big_state->point_size = point_size;
|
|
|
|
_cogl_pipeline_update_authority (pipeline, authority, state,
|
|
_cogl_pipeline_point_size_equal);
|
|
}
|
|
|
|
/* While a pipeline is referenced by the Cogl journal we can not allow
|
|
* modifications, so this gives us a mechanism to track journal
|
|
* references separately */
|
|
CoglPipeline *
|
|
_cogl_pipeline_journal_ref (CoglPipeline *pipeline)
|
|
{
|
|
pipeline->journal_ref_count++;
|
|
return cogl_object_ref (pipeline);
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_journal_unref (CoglPipeline *pipeline)
|
|
{
|
|
pipeline->journal_ref_count--;
|
|
cogl_object_unref (pipeline);
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_apply_legacy_state (CoglPipeline *pipeline)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
/* It was a mistake that we ever copied the OpenGL style API for
|
|
* associating these things directly with the context when we
|
|
* originally wrote Cogl. Until the corresponding deprecated APIs
|
|
* can be removed though we now shoehorn the state changes through
|
|
* the cogl_pipeline API instead.
|
|
*/
|
|
|
|
/* A program explicitly set on the pipeline has higher precedence than
|
|
* one associated with the context using cogl_program_use() */
|
|
if (ctx->current_program &&
|
|
cogl_pipeline_get_user_program (pipeline) == COGL_INVALID_HANDLE)
|
|
cogl_pipeline_set_user_program (pipeline, ctx->current_program);
|
|
|
|
if (ctx->legacy_depth_test_enabled)
|
|
cogl_pipeline_set_depth_test_enabled (pipeline, TRUE);
|
|
|
|
if (ctx->legacy_fog_state.enabled)
|
|
_cogl_pipeline_set_fog_state (pipeline, &ctx->legacy_fog_state);
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_set_static_breadcrumb (CoglPipeline *pipeline,
|
|
const char *breadcrumb)
|
|
{
|
|
pipeline->has_static_breadcrumb = TRUE;
|
|
pipeline->static_breadcrumb = breadcrumb;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int parent_id;
|
|
int *node_id_ptr;
|
|
GString *graph;
|
|
int indent;
|
|
} PrintDebugState;
|
|
|
|
static gboolean
|
|
dump_layer_cb (CoglPipelineNode *node, void *user_data)
|
|
{
|
|
CoglPipelineLayer *layer = COGL_PIPELINE_LAYER (node);
|
|
PrintDebugState *state = user_data;
|
|
int layer_id = *state->node_id_ptr;
|
|
PrintDebugState state_out;
|
|
GString *changes_label;
|
|
gboolean changes = FALSE;
|
|
|
|
if (state->parent_id >= 0)
|
|
g_string_append_printf (state->graph, "%*slayer%p -> layer%p;\n",
|
|
state->indent, "",
|
|
layer->_parent.parent,
|
|
layer);
|
|
|
|
g_string_append_printf (state->graph,
|
|
"%*slayer%p [label=\"layer=0x%p\\n"
|
|
"ref count=%d\" "
|
|
"color=\"blue\"];\n",
|
|
state->indent, "",
|
|
layer,
|
|
layer,
|
|
COGL_OBJECT (layer)->ref_count);
|
|
|
|
changes_label = g_string_new ("");
|
|
g_string_append_printf (changes_label,
|
|
"%*slayer%p -> layer_state%d [weight=100];\n"
|
|
"%*slayer_state%d [shape=box label=\"",
|
|
state->indent, "",
|
|
layer,
|
|
layer_id,
|
|
state->indent, "",
|
|
layer_id);
|
|
|
|
if (layer->differences & COGL_PIPELINE_LAYER_STATE_UNIT)
|
|
{
|
|
changes = TRUE;
|
|
g_string_append_printf (changes_label,
|
|
"\\lunit=%u\\n",
|
|
layer->unit_index);
|
|
}
|
|
|
|
if (layer->differences & COGL_PIPELINE_LAYER_STATE_TEXTURE)
|
|
{
|
|
changes = TRUE;
|
|
g_string_append_printf (changes_label,
|
|
"\\ltexture=%p\\n",
|
|
layer->texture);
|
|
}
|
|
|
|
if (changes)
|
|
{
|
|
g_string_append_printf (changes_label, "\"];\n");
|
|
g_string_append (state->graph, changes_label->str);
|
|
g_string_free (changes_label, TRUE);
|
|
}
|
|
|
|
state_out.parent_id = layer_id;
|
|
|
|
state_out.node_id_ptr = state->node_id_ptr;
|
|
(*state_out.node_id_ptr)++;
|
|
|
|
state_out.graph = state->graph;
|
|
state_out.indent = state->indent + 2;
|
|
|
|
_cogl_pipeline_node_foreach_child (COGL_PIPELINE_NODE (layer),
|
|
dump_layer_cb,
|
|
&state_out);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
dump_layer_ref_cb (CoglPipelineLayer *layer, void *data)
|
|
{
|
|
PrintDebugState *state = data;
|
|
int pipeline_id = *state->node_id_ptr;
|
|
|
|
g_string_append_printf (state->graph,
|
|
"%*spipeline_state%d -> layer%p;\n",
|
|
state->indent, "",
|
|
pipeline_id,
|
|
layer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
dump_pipeline_cb (CoglPipelineNode *node, void *user_data)
|
|
{
|
|
CoglPipeline *pipeline = COGL_PIPELINE (node);
|
|
PrintDebugState *state = user_data;
|
|
int pipeline_id = *state->node_id_ptr;
|
|
PrintDebugState state_out;
|
|
GString *changes_label;
|
|
gboolean changes = FALSE;
|
|
gboolean layers = FALSE;
|
|
|
|
if (state->parent_id >= 0)
|
|
g_string_append_printf (state->graph, "%*spipeline%d -> pipeline%d;\n",
|
|
state->indent, "",
|
|
state->parent_id,
|
|
pipeline_id);
|
|
|
|
g_string_append_printf (state->graph,
|
|
"%*spipeline%d [label=\"pipeline=0x%p\\n"
|
|
"ref count=%d\\n"
|
|
"breadcrumb=\\\"%s\\\"\" color=\"red\"];\n",
|
|
state->indent, "",
|
|
pipeline_id,
|
|
pipeline,
|
|
COGL_OBJECT (pipeline)->ref_count,
|
|
pipeline->has_static_breadcrumb ?
|
|
pipeline->static_breadcrumb : "NULL");
|
|
|
|
changes_label = g_string_new ("");
|
|
g_string_append_printf (changes_label,
|
|
"%*spipeline%d -> pipeline_state%d [weight=100];\n"
|
|
"%*spipeline_state%d [shape=box label=\"",
|
|
state->indent, "",
|
|
pipeline_id,
|
|
pipeline_id,
|
|
state->indent, "",
|
|
pipeline_id);
|
|
|
|
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_COLOR)
|
|
{
|
|
changes = TRUE;
|
|
g_string_append_printf (changes_label,
|
|
"\\lcolor=0x%02X%02X%02X%02X\\n",
|
|
cogl_color_get_red_byte (&pipeline->color),
|
|
cogl_color_get_green_byte (&pipeline->color),
|
|
cogl_color_get_blue_byte (&pipeline->color),
|
|
cogl_color_get_alpha_byte (&pipeline->color));
|
|
}
|
|
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_BLEND)
|
|
{
|
|
const char *blend_enable_name;
|
|
|
|
changes = TRUE;
|
|
|
|
switch (pipeline->blend_enable)
|
|
{
|
|
case COGL_PIPELINE_BLEND_ENABLE_AUTOMATIC:
|
|
blend_enable_name = "AUTO";
|
|
break;
|
|
case COGL_PIPELINE_BLEND_ENABLE_ENABLED:
|
|
blend_enable_name = "ENABLED";
|
|
break;
|
|
case COGL_PIPELINE_BLEND_ENABLE_DISABLED:
|
|
blend_enable_name = "DISABLED";
|
|
break;
|
|
default:
|
|
blend_enable_name = "UNKNOWN";
|
|
}
|
|
g_string_append_printf (changes_label,
|
|
"\\lblend=%s\\n",
|
|
blend_enable_name);
|
|
}
|
|
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_LAYERS)
|
|
{
|
|
changes = TRUE;
|
|
layers = TRUE;
|
|
g_string_append_printf (changes_label, "\\ln_layers=%d\\n",
|
|
pipeline->n_layers);
|
|
}
|
|
|
|
if (changes)
|
|
{
|
|
g_string_append_printf (changes_label, "\"];\n");
|
|
g_string_append (state->graph, changes_label->str);
|
|
g_string_free (changes_label, TRUE);
|
|
}
|
|
|
|
if (layers)
|
|
{
|
|
g_list_foreach (pipeline->layer_differences,
|
|
(GFunc)dump_layer_ref_cb,
|
|
state);
|
|
}
|
|
|
|
state_out.parent_id = pipeline_id;
|
|
|
|
state_out.node_id_ptr = state->node_id_ptr;
|
|
(*state_out.node_id_ptr)++;
|
|
|
|
state_out.graph = state->graph;
|
|
state_out.indent = state->indent + 2;
|
|
|
|
_cogl_pipeline_node_foreach_child (COGL_PIPELINE_NODE (pipeline),
|
|
dump_pipeline_cb,
|
|
&state_out);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_debug_dump_pipelines_dot_file (const char *filename)
|
|
{
|
|
GString *graph;
|
|
PrintDebugState layer_state;
|
|
PrintDebugState pipeline_state;
|
|
int layer_id = 0;
|
|
int pipeline_id = 0;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (!ctx->default_pipeline)
|
|
return;
|
|
|
|
graph = g_string_new ("");
|
|
g_string_append_printf (graph, "digraph {\n");
|
|
|
|
layer_state.graph = graph;
|
|
layer_state.parent_id = -1;
|
|
layer_state.node_id_ptr = &layer_id;
|
|
layer_state.indent = 0;
|
|
dump_layer_cb (ctx->default_layer_0, &layer_state);
|
|
|
|
pipeline_state.graph = graph;
|
|
pipeline_state.parent_id = -1;
|
|
pipeline_state.node_id_ptr = &pipeline_id;
|
|
pipeline_state.indent = 0;
|
|
dump_pipeline_cb (ctx->default_pipeline, &pipeline_state);
|
|
|
|
g_string_append_printf (graph, "}\n");
|
|
|
|
if (filename)
|
|
g_file_set_contents (filename, graph->str, -1, NULL);
|
|
else
|
|
g_print ("%s", graph->str);
|
|
|
|
g_string_free (graph, TRUE);
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int i;
|
|
CoglPipelineLayer **layers;
|
|
} AddLayersToArrayState;
|
|
|
|
static gboolean
|
|
add_layer_to_array_cb (CoglPipelineLayer *layer,
|
|
void *user_data)
|
|
{
|
|
AddLayersToArrayState *state = user_data;
|
|
state->layers[state->i++] = layer;
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
layers_codegen_would_differ (CoglPipelineLayer **pipeline0_layers,
|
|
CoglPipelineLayer **pipeline1_layers,
|
|
int n_layers)
|
|
{
|
|
int i;
|
|
/* The layer state that affects codegen... */
|
|
unsigned long codegen_modifiers =
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE |
|
|
COGL_PIPELINE_LAYER_STATE_UNIT;
|
|
|
|
for (i = 0; i < n_layers; i++)
|
|
{
|
|
CoglPipelineLayer *layer0 = pipeline0_layers[i];
|
|
CoglPipelineLayer *layer1 = pipeline1_layers[i];
|
|
unsigned long layer_differences;
|
|
|
|
if (layer0 == layer1)
|
|
continue;
|
|
|
|
layer_differences =
|
|
_cogl_pipeline_layer_compare_differences (layer0, layer1);
|
|
|
|
if (layer_differences & codegen_modifiers)
|
|
{
|
|
/* When it comes to texture differences the only thing that
|
|
* affects the codegen is the target enum... */
|
|
if (layer_differences == COGL_PIPELINE_LAYER_STATE_TEXTURE)
|
|
{
|
|
CoglHandle tex0 = _cogl_pipeline_layer_get_texture (layer0);
|
|
CoglHandle tex1 = _cogl_pipeline_layer_get_texture (layer1);
|
|
GLenum gl_target0;
|
|
GLenum gl_target1;
|
|
|
|
cogl_texture_get_gl_texture (tex0, NULL, &gl_target0);
|
|
cogl_texture_get_gl_texture (tex1, NULL, &gl_target1);
|
|
if (gl_target0 == gl_target1)
|
|
continue;
|
|
}
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Determines if we need to handle the RGB and A texture combining
|
|
* separately or is the same function used for both channel masks and
|
|
* with the same arguments...
|
|
*/
|
|
gboolean
|
|
_cogl_pipeline_need_texture_combine_separate
|
|
(CoglPipelineLayer *combine_authority)
|
|
{
|
|
CoglPipelineLayerBigState *big_state = combine_authority->big_state;
|
|
int n_args;
|
|
int i;
|
|
|
|
if (big_state->texture_combine_rgb_func !=
|
|
big_state->texture_combine_alpha_func)
|
|
return TRUE;
|
|
|
|
n_args = _cogl_get_n_args_for_combine_func (big_state->texture_combine_rgb_func);
|
|
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
if (big_state->texture_combine_rgb_src[i] !=
|
|
big_state->texture_combine_alpha_src[i])
|
|
return TRUE;
|
|
|
|
/*
|
|
* We can allow some variation of the source operands without
|
|
* needing a separation...
|
|
*
|
|
* "A = REPLACE (CONSTANT[A])" + either of the following...
|
|
* "RGB = REPLACE (CONSTANT[RGB])"
|
|
* "RGB = REPLACE (CONSTANT[A])"
|
|
*
|
|
* can be combined as:
|
|
* "RGBA = REPLACE (CONSTANT)" or
|
|
* "RGBA = REPLACE (CONSTANT[A])" or
|
|
*
|
|
* And "A = REPLACE (1-CONSTANT[A])" + either of the following...
|
|
* "RGB = REPLACE (1-CONSTANT)" or
|
|
* "RGB = REPLACE (1-CONSTANT[A])"
|
|
*
|
|
* can be combined as:
|
|
* "RGBA = REPLACE (1-CONSTANT)" or
|
|
* "RGBA = REPLACE (1-CONSTANT[A])"
|
|
*/
|
|
switch (big_state->texture_combine_alpha_op[i])
|
|
{
|
|
case GL_SRC_ALPHA:
|
|
switch (big_state->texture_combine_rgb_op[i])
|
|
{
|
|
case GL_SRC_COLOR:
|
|
case GL_SRC_ALPHA:
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
break;
|
|
case GL_ONE_MINUS_SRC_ALPHA:
|
|
switch (big_state->texture_combine_rgb_op[i])
|
|
{
|
|
case GL_ONE_MINUS_SRC_COLOR:
|
|
case GL_ONE_MINUS_SRC_ALPHA:
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
return FALSE; /* impossible */
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* This tries to find the oldest ancestor whos state would generate
|
|
* the same shader program as the current pipeline. This is a simple
|
|
* mechanism for reducing the number of programs we have to generate.
|
|
*/
|
|
CoglPipeline *
|
|
_cogl_pipeline_find_codegen_authority (CoglPipeline *pipeline,
|
|
CoglHandle user_program)
|
|
{
|
|
CoglPipeline *authority0;
|
|
CoglPipeline *authority1;
|
|
int n_layers;
|
|
CoglPipelineLayer **authority0_layers;
|
|
CoglPipelineLayer **authority1_layers;
|
|
/* Under GLES2 the alpha func becomes part of the fragment program
|
|
so we can't share programs there */
|
|
const int codegen_state = (COGL_PIPELINE_STATE_LAYERS
|
|
#ifdef HAVE_COGL_GLES2
|
|
| COGL_PIPELINE_STATE_ALPHA_FUNC
|
|
#endif
|
|
);
|
|
|
|
/* XXX: we'll need to update this when we add fog support to the
|
|
* codegen */
|
|
|
|
if (user_program != COGL_INVALID_HANDLE)
|
|
return pipeline;
|
|
|
|
/* Find the first pipeline that modifies state that affects the
|
|
* codegen... */
|
|
authority0 = _cogl_pipeline_get_authority (pipeline,
|
|
codegen_state);
|
|
|
|
/* Find the next ancestor after that, that also modifies state
|
|
* affecting codegen... */
|
|
if (_cogl_pipeline_get_parent (authority0))
|
|
{
|
|
authority1 =
|
|
_cogl_pipeline_get_authority (_cogl_pipeline_get_parent (authority0),
|
|
codegen_state);
|
|
}
|
|
else
|
|
return authority0;
|
|
|
|
n_layers = authority0->n_layers;
|
|
|
|
for (;;)
|
|
{
|
|
AddLayersToArrayState state;
|
|
|
|
if (authority0->n_layers != authority1->n_layers)
|
|
return authority0;
|
|
|
|
authority0_layers =
|
|
g_alloca (sizeof (CoglPipelineLayer *) * n_layers);
|
|
state.i = 0;
|
|
state.layers = authority0_layers;
|
|
_cogl_pipeline_foreach_layer_internal (authority0,
|
|
add_layer_to_array_cb,
|
|
&state);
|
|
|
|
authority1_layers =
|
|
g_alloca (sizeof (CoglPipelineLayer *) * n_layers);
|
|
state.i = 0;
|
|
state.layers = authority1_layers;
|
|
_cogl_pipeline_foreach_layer_internal (authority1,
|
|
add_layer_to_array_cb,
|
|
&state);
|
|
|
|
if (layers_codegen_would_differ (authority0_layers, authority1_layers,
|
|
n_layers))
|
|
return authority0;
|
|
|
|
/* Find the next ancestor after that, that also modifies state
|
|
* affecting codegen... */
|
|
|
|
if (!_cogl_pipeline_get_parent (authority1))
|
|
break;
|
|
|
|
authority0 = authority1;
|
|
authority1 =
|
|
_cogl_pipeline_get_authority (_cogl_pipeline_get_parent (authority1),
|
|
codegen_state);
|
|
if (authority1 == authority0)
|
|
break;
|
|
}
|
|
|
|
return authority1;
|
|
}
|