e4f24dba75
Almost nothing draws attributes directly and for those things that do it's trivial to adapt them to instead draw via the cogl_primitive api. This simplifies the Cogl api a bit. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 7395925bcc01aad6c695fd0d9af78b784b3c64d4) Conflicts: cogl/cogl-framebuffer.c cogl/cogl-framebuffer.h
2630 lines
85 KiB
C
2630 lines
85 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) 2007,2008,2009,2012 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "cogl-debug.h"
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#include "cogl-context-private.h"
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#include "cogl-display-private.h"
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#include "cogl-renderer-private.h"
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#include "cogl-object-private.h"
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#include "cogl-util.h"
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#include "cogl-texture-private.h"
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#include "cogl-framebuffer-private.h"
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#include "cogl-onscreen-template-private.h"
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#include "cogl-clip-stack.h"
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#include "cogl-journal-private.h"
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#include "cogl-winsys-private.h"
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#include "cogl-pipeline-state-private.h"
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#include "cogl-matrix-private.h"
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#include "cogl-primitive-private.h"
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#include "cogl-offscreen.h"
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#include "cogl1-context.h"
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#include "cogl-private.h"
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#include "cogl-primitives-private.h"
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#include "cogl-path-private.h"
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#include "cogl-error-private.h"
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#include "cogl-texture-gl-private.h"
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typedef struct _CoglFramebufferStackEntry
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{
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CoglFramebuffer *draw_buffer;
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CoglFramebuffer *read_buffer;
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} CoglFramebufferStackEntry;
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extern CoglObjectClass _cogl_onscreen_class;
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#ifdef COGL_ENABLE_DEBUG
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static CoglUserDataKey wire_pipeline_key;
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#endif
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static void _cogl_offscreen_free (CoglOffscreen *offscreen);
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COGL_OBJECT_DEFINE_WITH_CODE (Offscreen, offscreen,
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_cogl_offscreen_class.virt_unref =
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_cogl_framebuffer_unref);
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COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (offscreen);
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/* XXX:
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* The CoglObject macros don't support any form of inheritance, so for
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* now we implement the CoglObject support for the CoglFramebuffer
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* abstract class manually.
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*/
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uint32_t
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cogl_framebuffer_error_quark (void)
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{
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return g_quark_from_static_string ("cogl-framebuffer-error-quark");
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}
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CoglBool
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cogl_is_framebuffer (void *object)
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{
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CoglObject *obj = object;
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if (obj == NULL)
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return FALSE;
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return (obj->klass == &_cogl_onscreen_class ||
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obj->klass == &_cogl_offscreen_class);
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}
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void
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_cogl_framebuffer_init (CoglFramebuffer *framebuffer,
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CoglContext *ctx,
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CoglFramebufferType type,
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CoglPixelFormat format,
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int width,
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int height)
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{
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framebuffer->context = ctx;
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framebuffer->type = type;
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framebuffer->width = width;
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framebuffer->height = height;
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framebuffer->format = format;
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framebuffer->viewport_x = 0;
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framebuffer->viewport_y = 0;
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framebuffer->viewport_width = width;
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framebuffer->viewport_height = height;
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framebuffer->viewport_age = 0;
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framebuffer->viewport_age_for_scissor_workaround = -1;
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framebuffer->dither_enabled = TRUE;
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framebuffer->modelview_stack = cogl_matrix_stack_new (ctx);
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framebuffer->projection_stack = cogl_matrix_stack_new (ctx);
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framebuffer->dirty_bitmasks = TRUE;
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framebuffer->color_mask = COGL_COLOR_MASK_ALL;
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framebuffer->samples_per_pixel = 0;
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/* Initialise the clip stack */
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_cogl_clip_state_init (&framebuffer->clip_state);
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framebuffer->journal = _cogl_journal_new (framebuffer);
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/* Ensure we know the framebuffer->clear_color* members can't be
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* referenced for our fast-path read-pixel optimization (see
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* _cogl_journal_try_read_pixel()) until some region of the
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* framebuffer is initialized.
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*/
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framebuffer->clear_clip_dirty = TRUE;
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/* XXX: We have to maintain a central list of all framebuffers
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* because at times we need to be able to flush all known journals.
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*
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* Examples where we need to flush all journals are:
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* - because journal entries can reference OpenGL texture
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* coordinates that may not survive texture-atlas reorganization
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* so we need the ability to flush those entries.
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* - because although we generally advise against modifying
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* pipelines after construction we have to handle that possibility
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* and since pipelines may be referenced in journal entries we
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* need to be able to flush them before allowing the pipelines to
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* be changed.
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*
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* Note we don't maintain a list of journals and associate
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* framebuffers with journals by e.g. having a journal->framebuffer
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* reference since that would introduce a circular reference.
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*
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* Note: As a future change to try and remove the need to index all
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* journals it might be possible to defer resolving of OpenGL
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* texture coordinates for rectangle primitives until we come to
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* flush a journal. This would mean for instance that a single
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* rectangle entry in a journal could later be expanded into
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* multiple quad primitives to handle sliced textures but would mean
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* we don't have to worry about retaining references to OpenGL
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* texture coordinates that may later become invalid.
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*/
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ctx->framebuffers = g_list_prepend (ctx->framebuffers, framebuffer);
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}
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void
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_cogl_framebuffer_free (CoglFramebuffer *framebuffer)
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{
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CoglContext *ctx = framebuffer->context;
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_cogl_fence_cancel_fences_for_framebuffer (framebuffer);
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_cogl_clip_state_destroy (&framebuffer->clip_state);
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cogl_object_unref (framebuffer->modelview_stack);
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framebuffer->modelview_stack = NULL;
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cogl_object_unref (framebuffer->projection_stack);
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framebuffer->projection_stack = NULL;
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cogl_object_unref (framebuffer->journal);
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if (ctx->viewport_scissor_workaround_framebuffer == framebuffer)
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ctx->viewport_scissor_workaround_framebuffer = NULL;
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ctx->framebuffers = g_list_remove (ctx->framebuffers, framebuffer);
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if (ctx->current_draw_buffer == framebuffer)
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ctx->current_draw_buffer = NULL;
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if (ctx->current_read_buffer == framebuffer)
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ctx->current_read_buffer = NULL;
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}
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const CoglWinsysVtable *
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_cogl_framebuffer_get_winsys (CoglFramebuffer *framebuffer)
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{
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return framebuffer->context->display->renderer->winsys_vtable;
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}
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/* This version of cogl_clear can be used internally as an alternative
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* to avoid flushing the journal or the framebuffer state. This is
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* needed when doing operations that may be called whiling flushing
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* the journal */
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void
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_cogl_framebuffer_clear_without_flush4f (CoglFramebuffer *framebuffer,
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unsigned long buffers,
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float red,
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float green,
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float blue,
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float alpha)
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{
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CoglContext *ctx = framebuffer->context;
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if (!buffers)
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{
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static CoglBool shown = FALSE;
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if (!shown)
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{
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g_warning ("You should specify at least one auxiliary buffer "
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"when calling cogl_framebuffer_clear");
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}
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return;
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}
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ctx->driver_vtable->framebuffer_clear (framebuffer,
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buffers,
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red, green, blue, alpha);
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}
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void
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_cogl_framebuffer_mark_mid_scene (CoglFramebuffer *framebuffer)
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{
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framebuffer->clear_clip_dirty = TRUE;
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framebuffer->mid_scene = TRUE;
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}
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void
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cogl_framebuffer_clear4f (CoglFramebuffer *framebuffer,
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unsigned long buffers,
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float red,
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float green,
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float blue,
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float alpha)
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{
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CoglContext *ctx = framebuffer->context;
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CoglClipStack *clip_stack = _cogl_framebuffer_get_clip_stack (framebuffer);
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int scissor_x0;
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int scissor_y0;
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int scissor_x1;
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int scissor_y1;
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CoglBool saved_viewport_scissor_workaround;
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_cogl_clip_stack_get_bounds (clip_stack,
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&scissor_x0, &scissor_y0,
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&scissor_x1, &scissor_y1);
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/* NB: the previous clear could have had an arbitrary clip.
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* NB: everything for the last frame might still be in the journal
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* but we can't assume anything about how each entry was
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* clipped.
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* NB: Clutter will scissor its pick renders which would mean all
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* journal entries have a common ClipStack entry, but without
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* a layering violation Cogl has to explicitly walk the journal
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* entries to determine if this is the case.
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* NB: We have a software only read-pixel optimization in the
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* journal that determines the color at a given framebuffer
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* coordinate for simple scenes without rendering with the GPU.
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* When Clutter is hitting this fast-path we can expect to
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* receive calls to clear the framebuffer with an un-flushed
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* journal.
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* NB: To fully support software based picking for Clutter we
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* need to be able to reliably detect when the contents of a
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* journal can be discarded and when we can skip the call to
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* glClear because it matches the previous clear request.
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*/
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/* Note: we don't check for the stencil buffer being cleared here
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* since there isn't any public cogl api to manipulate the stencil
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* buffer.
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*
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* Note: we check for an exact clip match here because
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* 1) a smaller clip could mean existing journal entries may
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* need to contribute to regions outside the new clear-clip
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* 2) a larger clip would mean we need to issue a real
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* glClear and we only care about cases avoiding a
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* glClear.
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*
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* Note: Comparing without an epsilon is considered
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* appropriate here.
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*/
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if (buffers & COGL_BUFFER_BIT_COLOR &&
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buffers & COGL_BUFFER_BIT_DEPTH &&
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!framebuffer->clear_clip_dirty &&
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framebuffer->clear_color_red == red &&
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framebuffer->clear_color_green == green &&
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framebuffer->clear_color_blue == blue &&
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framebuffer->clear_color_alpha == alpha &&
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scissor_x0 == framebuffer->clear_clip_x0 &&
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scissor_y0 == framebuffer->clear_clip_y0 &&
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scissor_x1 == framebuffer->clear_clip_x1 &&
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scissor_y1 == framebuffer->clear_clip_y1)
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{
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/* NB: We only have to consider the clip state of journal
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* entries if the current clear is clipped since otherwise we
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* know every pixel of the framebuffer is affected by the clear
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* and so all journal entries become redundant and can simply be
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* discarded.
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*/
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if (clip_stack)
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{
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/*
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* Note: the function for checking the journal entries is
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* quite strict. It avoids detailed checking of all entry
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* clip_stacks by only checking the details of the first
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* entry and then it only verifies that the remaining
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* entries share the same clip_stack ancestry. This means
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* it's possible for some false negatives here but that will
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* just result in us falling back to a real clear.
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*/
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if (_cogl_journal_all_entries_within_bounds (framebuffer->journal,
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scissor_x0, scissor_y0,
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scissor_x1, scissor_y1))
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{
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_cogl_journal_discard (framebuffer->journal);
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goto cleared;
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}
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}
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else
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{
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_cogl_journal_discard (framebuffer->journal);
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goto cleared;
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}
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}
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COGL_NOTE (DRAW, "Clear begin");
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_cogl_framebuffer_flush_journal (framebuffer);
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/* XXX: ONGOING BUG: Intel viewport scissor
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*
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* The semantics of cogl_framebuffer_clear() are that it should not
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* be affected by the current viewport and so if we are currently
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* applying a workaround for viewport scissoring we need to
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* temporarily disable the workaround before clearing so any
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* special scissoring for the workaround will be removed first.
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*
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* Note: we only need to disable the workaround if the current
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* viewport doesn't match the framebuffer's size since otherwise
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* the workaround wont affect clearing anyway.
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*/
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if (ctx->needs_viewport_scissor_workaround &&
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(framebuffer->viewport_x != 0 ||
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framebuffer->viewport_y != 0 ||
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framebuffer->viewport_width != framebuffer->width ||
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framebuffer->viewport_height != framebuffer->height))
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{
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saved_viewport_scissor_workaround = TRUE;
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ctx->needs_viewport_scissor_workaround = FALSE;
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ctx->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_CLIP;
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}
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else
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saved_viewport_scissor_workaround = FALSE;
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/* NB: _cogl_framebuffer_flush_state may disrupt various state (such
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* as the pipeline state) when flushing the clip stack, so should
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* always be done first when preparing to draw. */
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_cogl_framebuffer_flush_state (framebuffer, framebuffer,
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COGL_FRAMEBUFFER_STATE_ALL);
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_cogl_framebuffer_clear_without_flush4f (framebuffer, buffers,
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red, green, blue, alpha);
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/* XXX: ONGOING BUG: Intel viewport scissor
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*
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* See comment about temporarily disabling this workaround above
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*/
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if (saved_viewport_scissor_workaround)
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{
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ctx->needs_viewport_scissor_workaround = TRUE;
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ctx->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_CLIP;
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}
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/* This is a debugging variable used to visually display the quad
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* batches from the journal. It is reset here to increase the
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* chances of getting the same colours for each frame during an
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* animation */
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if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_RECTANGLES)) &&
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buffers & COGL_BUFFER_BIT_COLOR)
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{
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framebuffer->context->journal_rectangles_color = 1;
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}
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COGL_NOTE (DRAW, "Clear end");
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cleared:
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_cogl_framebuffer_mark_mid_scene (framebuffer);
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if (buffers & COGL_BUFFER_BIT_COLOR && buffers & COGL_BUFFER_BIT_DEPTH)
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{
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/* For our fast-path for reading back a single pixel of simple
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* scenes where the whole frame is in the journal we need to
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* track the cleared color of the framebuffer in case the point
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* read doesn't intersect any of the journal rectangles. */
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framebuffer->clear_clip_dirty = FALSE;
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framebuffer->clear_color_red = red;
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framebuffer->clear_color_green = green;
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framebuffer->clear_color_blue = blue;
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framebuffer->clear_color_alpha = alpha;
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/* NB: A clear may be scissored so we need to track the extents
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* that the clear is applicable too... */
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if (clip_stack)
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{
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_cogl_clip_stack_get_bounds (clip_stack,
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&framebuffer->clear_clip_x0,
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&framebuffer->clear_clip_y0,
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&framebuffer->clear_clip_x1,
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&framebuffer->clear_clip_y1);
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}
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else
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{
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/* FIXME: set degenerate clip */
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}
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}
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}
|
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/* Note: the 'buffers' and 'color' arguments were switched around on
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* purpose compared to the original cogl_clear API since it was odd
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* that you would be expected to specify a color before even
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* necessarily choosing to clear the color buffer.
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*/
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void
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cogl_framebuffer_clear (CoglFramebuffer *framebuffer,
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unsigned long buffers,
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const CoglColor *color)
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{
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cogl_framebuffer_clear4f (framebuffer, buffers,
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cogl_color_get_red_float (color),
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cogl_color_get_green_float (color),
|
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cogl_color_get_blue_float (color),
|
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cogl_color_get_alpha_float (color));
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}
|
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|
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int
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cogl_framebuffer_get_width (CoglFramebuffer *framebuffer)
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{
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return framebuffer->width;
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}
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|
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int
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cogl_framebuffer_get_height (CoglFramebuffer *framebuffer)
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{
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return framebuffer->height;
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}
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|
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CoglClipState *
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_cogl_framebuffer_get_clip_state (CoglFramebuffer *framebuffer)
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{
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return &framebuffer->clip_state;
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}
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|
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CoglClipStack *
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_cogl_framebuffer_get_clip_stack (CoglFramebuffer *framebuffer)
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{
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CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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return _cogl_clip_state_get_stack (clip_state);
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}
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|
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void
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_cogl_framebuffer_set_clip_stack (CoglFramebuffer *framebuffer,
|
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CoglClipStack *stack)
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{
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CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
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_cogl_clip_state_set_stack (clip_state, stack);
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}
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|
|
void
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cogl_framebuffer_set_viewport (CoglFramebuffer *framebuffer,
|
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float x,
|
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float y,
|
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float width,
|
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float height)
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{
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CoglContext *context = framebuffer->context;
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|
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_COGL_RETURN_IF_FAIL (width > 0 && height > 0);
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|
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if (framebuffer->viewport_x == x &&
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framebuffer->viewport_y == y &&
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framebuffer->viewport_width == width &&
|
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framebuffer->viewport_height == height)
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return;
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|
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_cogl_framebuffer_flush_journal (framebuffer);
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framebuffer->viewport_x = x;
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framebuffer->viewport_y = y;
|
|
framebuffer->viewport_width = width;
|
|
framebuffer->viewport_height = height;
|
|
framebuffer->viewport_age++;
|
|
|
|
if (context->current_draw_buffer == framebuffer)
|
|
{
|
|
context->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_VIEWPORT;
|
|
|
|
if (context->needs_viewport_scissor_workaround)
|
|
context->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_CLIP;
|
|
}
|
|
}
|
|
|
|
float
|
|
cogl_framebuffer_get_viewport_x (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->viewport_x;
|
|
}
|
|
|
|
float
|
|
cogl_framebuffer_get_viewport_y (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->viewport_y;
|
|
}
|
|
|
|
float
|
|
cogl_framebuffer_get_viewport_width (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->viewport_width;
|
|
}
|
|
|
|
float
|
|
cogl_framebuffer_get_viewport_height (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->viewport_height;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_get_viewport4fv (CoglFramebuffer *framebuffer,
|
|
float *viewport)
|
|
{
|
|
viewport[0] = framebuffer->viewport_x;
|
|
viewport[1] = framebuffer->viewport_y;
|
|
viewport[2] = framebuffer->viewport_width;
|
|
viewport[3] = framebuffer->viewport_height;
|
|
}
|
|
|
|
CoglMatrixStack *
|
|
_cogl_framebuffer_get_modelview_stack (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->modelview_stack;
|
|
}
|
|
|
|
CoglMatrixStack *
|
|
_cogl_framebuffer_get_projection_stack (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->projection_stack;
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_add_dependency (CoglFramebuffer *framebuffer,
|
|
CoglFramebuffer *dependency)
|
|
{
|
|
GList *l;
|
|
|
|
for (l = framebuffer->deps; l; l = l->next)
|
|
{
|
|
CoglFramebuffer *existing_dep = l->data;
|
|
if (existing_dep == dependency)
|
|
return;
|
|
}
|
|
|
|
/* TODO: generalize the primed-array type structure we e.g. use for
|
|
* cogl_object_set_user_data or for pipeline children as a way to
|
|
* avoid quite a lot of mid-scene micro allocations here... */
|
|
framebuffer->deps =
|
|
g_list_prepend (framebuffer->deps, cogl_object_ref (dependency));
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_remove_all_dependencies (CoglFramebuffer *framebuffer)
|
|
{
|
|
GList *l;
|
|
for (l = framebuffer->deps; l; l = l->next)
|
|
cogl_object_unref (l->data);
|
|
g_list_free (framebuffer->deps);
|
|
framebuffer->deps = NULL;
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_flush_journal (CoglFramebuffer *framebuffer)
|
|
{
|
|
_cogl_journal_flush (framebuffer->journal);
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_flush_dependency_journals (CoglFramebuffer *framebuffer)
|
|
{
|
|
GList *l;
|
|
for (l = framebuffer->deps; l; l = l->next)
|
|
_cogl_framebuffer_flush_journal (l->data);
|
|
_cogl_framebuffer_remove_all_dependencies (framebuffer);
|
|
}
|
|
|
|
CoglOffscreen *
|
|
_cogl_offscreen_new_to_texture_full (CoglTexture *texture,
|
|
CoglOffscreenFlags create_flags,
|
|
int level)
|
|
{
|
|
CoglContext *ctx = texture->context;
|
|
CoglOffscreen *offscreen;
|
|
CoglFramebuffer *fb;
|
|
int level_width;
|
|
int level_height;
|
|
CoglOffscreen *ret;
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (cogl_is_texture (texture), NULL);
|
|
_COGL_RETURN_VAL_IF_FAIL (level < _cogl_texture_get_n_levels (texture),
|
|
NULL);
|
|
|
|
_cogl_texture_get_level_size (texture,
|
|
level,
|
|
&level_width,
|
|
&level_height,
|
|
NULL);
|
|
|
|
offscreen = g_new0 (CoglOffscreen, 1);
|
|
offscreen->texture = cogl_object_ref (texture);
|
|
offscreen->texture_level = level;
|
|
offscreen->texture_level_width = level_width;
|
|
offscreen->texture_level_height = level_height;
|
|
offscreen->create_flags = create_flags;
|
|
|
|
fb = COGL_FRAMEBUFFER (offscreen);
|
|
|
|
_cogl_framebuffer_init (fb,
|
|
ctx,
|
|
COGL_FRAMEBUFFER_TYPE_OFFSCREEN,
|
|
cogl_texture_get_format (texture),
|
|
level_width,
|
|
level_height);
|
|
|
|
ret = _cogl_offscreen_object_new (offscreen);
|
|
|
|
_cogl_texture_associate_framebuffer (texture, fb);
|
|
|
|
return ret;
|
|
}
|
|
|
|
CoglOffscreen *
|
|
cogl_offscreen_new_to_texture (CoglTexture *texture)
|
|
{
|
|
return _cogl_offscreen_new_to_texture_full (texture, 0, 0);
|
|
}
|
|
|
|
static void
|
|
_cogl_offscreen_free (CoglOffscreen *offscreen)
|
|
{
|
|
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (offscreen);
|
|
CoglContext *ctx = framebuffer->context;
|
|
|
|
ctx->driver_vtable->offscreen_free (offscreen);
|
|
|
|
/* Chain up to parent */
|
|
_cogl_framebuffer_free (framebuffer);
|
|
|
|
if (offscreen->texture != NULL)
|
|
cogl_object_unref (offscreen->texture);
|
|
|
|
if (offscreen->depth_texture != NULL)
|
|
cogl_object_unref (offscreen->depth_texture);
|
|
|
|
g_free (offscreen);
|
|
}
|
|
|
|
CoglBool
|
|
cogl_framebuffer_allocate (CoglFramebuffer *framebuffer,
|
|
CoglError **error)
|
|
{
|
|
CoglOnscreen *onscreen = COGL_ONSCREEN (framebuffer);
|
|
const CoglWinsysVtable *winsys = _cogl_framebuffer_get_winsys (framebuffer);
|
|
CoglContext *ctx = framebuffer->context;
|
|
|
|
if (framebuffer->allocated)
|
|
return TRUE;
|
|
|
|
if (framebuffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN)
|
|
{
|
|
if (framebuffer->config.depth_texture_enabled)
|
|
{
|
|
_cogl_set_error (error, COGL_FRAMEBUFFER_ERROR,
|
|
COGL_FRAMEBUFFER_ERROR_ALLOCATE,
|
|
"Can't allocate onscreen framebuffer with a "
|
|
"texture based depth buffer");
|
|
return FALSE;
|
|
}
|
|
|
|
if (!winsys->onscreen_init (onscreen, error))
|
|
return FALSE;
|
|
|
|
/* If the winsys doesn't support dirty events then we'll report
|
|
* one on allocation so that if the application only paints in
|
|
* response to dirty events then it will at least paint once to
|
|
* start */
|
|
if (!(ctx->private_feature_flags & COGL_PRIVATE_FEATURE_DIRTY_EVENTS))
|
|
_cogl_onscreen_queue_full_dirty (onscreen);
|
|
}
|
|
else
|
|
{
|
|
CoglOffscreen *offscreen = COGL_OFFSCREEN (framebuffer);
|
|
|
|
if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
|
|
{
|
|
_cogl_set_error (error, COGL_SYSTEM_ERROR,
|
|
COGL_SYSTEM_ERROR_UNSUPPORTED,
|
|
"Offscreen framebuffers not supported by system");
|
|
return FALSE;
|
|
}
|
|
|
|
if (cogl_texture_is_sliced (offscreen->texture))
|
|
{
|
|
_cogl_set_error (error, COGL_SYSTEM_ERROR,
|
|
COGL_SYSTEM_ERROR_UNSUPPORTED,
|
|
"Can't create offscreen framebuffer from "
|
|
"sliced texture");
|
|
return FALSE;
|
|
}
|
|
|
|
if (!cogl_texture_allocate (offscreen->texture, error))
|
|
return FALSE;
|
|
|
|
if (!ctx->driver_vtable->offscreen_allocate (offscreen, error))
|
|
return FALSE;
|
|
}
|
|
|
|
framebuffer->allocated = TRUE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglFramebufferStackEntry *
|
|
create_stack_entry (CoglFramebuffer *draw_buffer,
|
|
CoglFramebuffer *read_buffer)
|
|
{
|
|
CoglFramebufferStackEntry *entry = g_slice_new (CoglFramebufferStackEntry);
|
|
|
|
entry->draw_buffer = draw_buffer;
|
|
entry->read_buffer = read_buffer;
|
|
|
|
return entry;
|
|
}
|
|
|
|
GSList *
|
|
_cogl_create_framebuffer_stack (void)
|
|
{
|
|
CoglFramebufferStackEntry *entry;
|
|
GSList *stack = NULL;
|
|
|
|
entry = create_stack_entry (NULL, NULL);
|
|
|
|
return g_slist_prepend (stack, entry);
|
|
}
|
|
|
|
void
|
|
_cogl_free_framebuffer_stack (GSList *stack)
|
|
{
|
|
GSList *l;
|
|
|
|
for (l = stack; l != NULL; l = l->next)
|
|
{
|
|
CoglFramebufferStackEntry *entry = l->data;
|
|
|
|
if (entry->draw_buffer)
|
|
cogl_object_unref (entry->draw_buffer);
|
|
|
|
if (entry->read_buffer)
|
|
cogl_object_unref (entry->draw_buffer);
|
|
|
|
g_slice_free (CoglFramebufferStackEntry, entry);
|
|
}
|
|
g_slist_free (stack);
|
|
}
|
|
|
|
static void
|
|
notify_buffers_changed (CoglFramebuffer *old_draw_buffer,
|
|
CoglFramebuffer *new_draw_buffer,
|
|
CoglFramebuffer *old_read_buffer,
|
|
CoglFramebuffer *new_read_buffer)
|
|
{
|
|
/* XXX: To support the deprecated cogl_set_draw_buffer API we keep
|
|
* track of the last onscreen framebuffer that was set so that it
|
|
* can be restored if the COGL_WINDOW_BUFFER enum is used. A
|
|
* reference isn't taken to the framebuffer because otherwise we
|
|
* would have a circular reference between the context and the
|
|
* framebuffer. Instead the pointer is set to NULL in
|
|
* _cogl_onscreen_free as a kind of a cheap weak reference */
|
|
if (new_draw_buffer &&
|
|
new_draw_buffer->type == COGL_FRAMEBUFFER_TYPE_ONSCREEN)
|
|
new_draw_buffer->context->window_buffer = new_draw_buffer;
|
|
}
|
|
|
|
/* Set the current framebuffer without checking if it's already the
|
|
* current framebuffer. This is used by cogl_pop_framebuffer while
|
|
* the top of the stack is currently not up to date. */
|
|
static void
|
|
_cogl_set_framebuffers_real (CoglFramebuffer *draw_buffer,
|
|
CoglFramebuffer *read_buffer)
|
|
{
|
|
CoglFramebufferStackEntry *entry;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
_COGL_RETURN_IF_FAIL (ctx != NULL);
|
|
_COGL_RETURN_IF_FAIL (draw_buffer && read_buffer ?
|
|
draw_buffer->context == read_buffer->context : TRUE);
|
|
|
|
entry = ctx->framebuffer_stack->data;
|
|
|
|
notify_buffers_changed (entry->draw_buffer,
|
|
draw_buffer,
|
|
entry->read_buffer,
|
|
read_buffer);
|
|
|
|
if (draw_buffer)
|
|
cogl_object_ref (draw_buffer);
|
|
if (entry->draw_buffer)
|
|
cogl_object_unref (entry->draw_buffer);
|
|
|
|
if (read_buffer)
|
|
cogl_object_ref (read_buffer);
|
|
if (entry->read_buffer)
|
|
cogl_object_unref (entry->read_buffer);
|
|
|
|
entry->draw_buffer = draw_buffer;
|
|
entry->read_buffer = read_buffer;
|
|
}
|
|
|
|
static void
|
|
_cogl_set_framebuffers (CoglFramebuffer *draw_buffer,
|
|
CoglFramebuffer *read_buffer)
|
|
{
|
|
CoglFramebuffer *current_draw_buffer;
|
|
CoglFramebuffer *current_read_buffer;
|
|
|
|
_COGL_RETURN_IF_FAIL (cogl_is_framebuffer (draw_buffer));
|
|
_COGL_RETURN_IF_FAIL (cogl_is_framebuffer (read_buffer));
|
|
|
|
current_draw_buffer = cogl_get_draw_framebuffer ();
|
|
current_read_buffer = _cogl_get_read_framebuffer ();
|
|
|
|
if (current_draw_buffer != draw_buffer ||
|
|
current_read_buffer != read_buffer)
|
|
_cogl_set_framebuffers_real (draw_buffer, read_buffer);
|
|
}
|
|
|
|
void
|
|
cogl_set_framebuffer (CoglFramebuffer *framebuffer)
|
|
{
|
|
_cogl_set_framebuffers (framebuffer, framebuffer);
|
|
}
|
|
|
|
/* XXX: deprecated API */
|
|
void
|
|
cogl_set_draw_buffer (CoglBufferTarget target, CoglHandle handle)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (target == COGL_WINDOW_BUFFER)
|
|
handle = ctx->window_buffer;
|
|
|
|
/* This is deprecated public API. The public API doesn't currently
|
|
really expose the concept of separate draw and read buffers so
|
|
for the time being this actually just sets both buffers */
|
|
cogl_set_framebuffer (handle);
|
|
}
|
|
|
|
CoglFramebuffer *
|
|
cogl_get_draw_framebuffer (void)
|
|
{
|
|
CoglFramebufferStackEntry *entry;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NULL);
|
|
|
|
g_assert (ctx->framebuffer_stack);
|
|
|
|
entry = ctx->framebuffer_stack->data;
|
|
|
|
return entry->draw_buffer;
|
|
}
|
|
|
|
CoglFramebuffer *
|
|
_cogl_get_read_framebuffer (void)
|
|
{
|
|
CoglFramebufferStackEntry *entry;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NULL);
|
|
|
|
g_assert (ctx->framebuffer_stack);
|
|
|
|
entry = ctx->framebuffer_stack->data;
|
|
|
|
return entry->read_buffer;
|
|
}
|
|
|
|
void
|
|
_cogl_push_framebuffers (CoglFramebuffer *draw_buffer,
|
|
CoglFramebuffer *read_buffer)
|
|
{
|
|
CoglContext *ctx;
|
|
CoglFramebuffer *old_draw_buffer, *old_read_buffer;
|
|
|
|
_COGL_RETURN_IF_FAIL (cogl_is_framebuffer (draw_buffer));
|
|
_COGL_RETURN_IF_FAIL (cogl_is_framebuffer (read_buffer));
|
|
|
|
ctx = draw_buffer->context;
|
|
_COGL_RETURN_IF_FAIL (ctx != NULL);
|
|
_COGL_RETURN_IF_FAIL (draw_buffer->context == read_buffer->context);
|
|
|
|
_COGL_RETURN_IF_FAIL (ctx->framebuffer_stack != NULL);
|
|
|
|
/* Copy the top of the stack so that when we call cogl_set_framebuffer
|
|
it will still know what the old framebuffer was */
|
|
old_draw_buffer = cogl_get_draw_framebuffer ();
|
|
if (old_draw_buffer)
|
|
cogl_object_ref (old_draw_buffer);
|
|
old_read_buffer = _cogl_get_read_framebuffer ();
|
|
if (old_read_buffer)
|
|
cogl_object_ref (old_read_buffer);
|
|
ctx->framebuffer_stack =
|
|
g_slist_prepend (ctx->framebuffer_stack,
|
|
create_stack_entry (old_draw_buffer,
|
|
old_read_buffer));
|
|
|
|
_cogl_set_framebuffers (draw_buffer, read_buffer);
|
|
}
|
|
|
|
void
|
|
cogl_push_framebuffer (CoglFramebuffer *buffer)
|
|
{
|
|
_cogl_push_framebuffers (buffer, buffer);
|
|
}
|
|
|
|
/* XXX: deprecated API */
|
|
void
|
|
cogl_push_draw_buffer (void)
|
|
{
|
|
cogl_push_framebuffer (cogl_get_draw_framebuffer ());
|
|
}
|
|
|
|
void
|
|
cogl_pop_framebuffer (void)
|
|
{
|
|
CoglFramebufferStackEntry *to_pop;
|
|
CoglFramebufferStackEntry *to_restore;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
g_assert (ctx->framebuffer_stack != NULL);
|
|
g_assert (ctx->framebuffer_stack->next != NULL);
|
|
|
|
to_pop = ctx->framebuffer_stack->data;
|
|
to_restore = ctx->framebuffer_stack->next->data;
|
|
|
|
if (to_pop->draw_buffer != to_restore->draw_buffer ||
|
|
to_pop->read_buffer != to_restore->read_buffer)
|
|
notify_buffers_changed (to_pop->draw_buffer,
|
|
to_restore->draw_buffer,
|
|
to_pop->read_buffer,
|
|
to_restore->read_buffer);
|
|
|
|
cogl_object_unref (to_pop->draw_buffer);
|
|
cogl_object_unref (to_pop->read_buffer);
|
|
g_slice_free (CoglFramebufferStackEntry, to_pop);
|
|
|
|
ctx->framebuffer_stack =
|
|
g_slist_delete_link (ctx->framebuffer_stack,
|
|
ctx->framebuffer_stack);
|
|
}
|
|
|
|
/* XXX: deprecated API */
|
|
void
|
|
cogl_pop_draw_buffer (void)
|
|
{
|
|
cogl_pop_framebuffer ();
|
|
}
|
|
|
|
static unsigned long
|
|
_cogl_framebuffer_compare_viewport_state (CoglFramebuffer *a,
|
|
CoglFramebuffer *b)
|
|
{
|
|
if (a->viewport_x != b->viewport_x ||
|
|
a->viewport_y != b->viewport_y ||
|
|
a->viewport_width != b->viewport_width ||
|
|
a->viewport_height != b->viewport_height ||
|
|
/* NB: we render upside down to offscreen framebuffers and that
|
|
* can affect how we setup the GL viewport... */
|
|
a->type != b->type)
|
|
{
|
|
unsigned long differences = COGL_FRAMEBUFFER_STATE_VIEWPORT;
|
|
CoglContext *context = a->context;
|
|
|
|
/* XXX: ONGOING BUG: Intel viewport scissor
|
|
*
|
|
* Intel gen6 drivers don't currently correctly handle offset
|
|
* viewports, since primitives aren't clipped within the bounds of
|
|
* the viewport. To workaround this we push our own clip for the
|
|
* viewport that will use scissoring to ensure we clip as expected.
|
|
*
|
|
* This workaround implies that a change in viewport state is
|
|
* effectively also a change in the clipping state.
|
|
*
|
|
* TODO: file a bug upstream!
|
|
*/
|
|
if (G_UNLIKELY (context->needs_viewport_scissor_workaround))
|
|
differences |= COGL_FRAMEBUFFER_STATE_CLIP;
|
|
|
|
return differences;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long
|
|
_cogl_framebuffer_compare_clip_state (CoglFramebuffer *a,
|
|
CoglFramebuffer *b)
|
|
{
|
|
if (((a->clip_state.stacks == NULL || b->clip_state.stacks == NULL) &&
|
|
a->clip_state.stacks != b->clip_state.stacks)
|
|
||
|
|
a->clip_state.stacks->data != b->clip_state.stacks->data)
|
|
return COGL_FRAMEBUFFER_STATE_CLIP;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long
|
|
_cogl_framebuffer_compare_dither_state (CoglFramebuffer *a,
|
|
CoglFramebuffer *b)
|
|
{
|
|
return a->dither_enabled != b->dither_enabled ?
|
|
COGL_FRAMEBUFFER_STATE_DITHER : 0;
|
|
}
|
|
|
|
static unsigned long
|
|
_cogl_framebuffer_compare_modelview_state (CoglFramebuffer *a,
|
|
CoglFramebuffer *b)
|
|
{
|
|
/* We always want to flush the modelview state. All this does is set
|
|
the current modelview stack on the context to the framebuffer's
|
|
stack. */
|
|
return COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
static unsigned long
|
|
_cogl_framebuffer_compare_projection_state (CoglFramebuffer *a,
|
|
CoglFramebuffer *b)
|
|
{
|
|
/* We always want to flush the projection state. All this does is
|
|
set the current projection stack on the context to the
|
|
framebuffer's stack. */
|
|
return COGL_FRAMEBUFFER_STATE_PROJECTION;
|
|
}
|
|
|
|
static unsigned long
|
|
_cogl_framebuffer_compare_color_mask_state (CoglFramebuffer *a,
|
|
CoglFramebuffer *b)
|
|
{
|
|
if (cogl_framebuffer_get_color_mask (a) !=
|
|
cogl_framebuffer_get_color_mask (b))
|
|
return COGL_FRAMEBUFFER_STATE_COLOR_MASK;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long
|
|
_cogl_framebuffer_compare_front_face_winding_state (CoglFramebuffer *a,
|
|
CoglFramebuffer *b)
|
|
{
|
|
if (a->type != b->type)
|
|
return COGL_FRAMEBUFFER_STATE_FRONT_FACE_WINDING;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
unsigned long
|
|
_cogl_framebuffer_compare (CoglFramebuffer *a,
|
|
CoglFramebuffer *b,
|
|
unsigned long state)
|
|
{
|
|
unsigned long differences = 0;
|
|
int bit;
|
|
|
|
if (state & COGL_FRAMEBUFFER_STATE_BIND)
|
|
{
|
|
differences |= COGL_FRAMEBUFFER_STATE_BIND;
|
|
state &= ~COGL_FRAMEBUFFER_STATE_BIND;
|
|
}
|
|
|
|
COGL_FLAGS_FOREACH_START (&state, 1, bit)
|
|
{
|
|
/* XXX: We considered having an array of callbacks for each state index
|
|
* that we'd call here but decided that this way the compiler is more
|
|
* likely going to be able to in-line the comparison functions and use
|
|
* the index to jump straight to the required code. */
|
|
switch (bit)
|
|
{
|
|
case COGL_FRAMEBUFFER_STATE_INDEX_VIEWPORT:
|
|
differences |=
|
|
_cogl_framebuffer_compare_viewport_state (a, b);
|
|
break;
|
|
case COGL_FRAMEBUFFER_STATE_INDEX_CLIP:
|
|
differences |= _cogl_framebuffer_compare_clip_state (a, b);
|
|
break;
|
|
case COGL_FRAMEBUFFER_STATE_INDEX_DITHER:
|
|
differences |= _cogl_framebuffer_compare_dither_state (a, b);
|
|
break;
|
|
case COGL_FRAMEBUFFER_STATE_INDEX_MODELVIEW:
|
|
differences |=
|
|
_cogl_framebuffer_compare_modelview_state (a, b);
|
|
break;
|
|
case COGL_FRAMEBUFFER_STATE_INDEX_PROJECTION:
|
|
differences |=
|
|
_cogl_framebuffer_compare_projection_state (a, b);
|
|
break;
|
|
case COGL_FRAMEBUFFER_STATE_INDEX_COLOR_MASK:
|
|
differences |=
|
|
_cogl_framebuffer_compare_color_mask_state (a, b);
|
|
break;
|
|
case COGL_FRAMEBUFFER_STATE_INDEX_FRONT_FACE_WINDING:
|
|
differences |=
|
|
_cogl_framebuffer_compare_front_face_winding_state (a, b);
|
|
break;
|
|
default:
|
|
g_warn_if_reached ();
|
|
}
|
|
}
|
|
COGL_FLAGS_FOREACH_END;
|
|
|
|
return differences;
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_flush_state (CoglFramebuffer *draw_buffer,
|
|
CoglFramebuffer *read_buffer,
|
|
CoglFramebufferState state)
|
|
{
|
|
CoglContext *ctx = draw_buffer->context;
|
|
|
|
ctx->driver_vtable->framebuffer_flush_state (draw_buffer,
|
|
read_buffer,
|
|
state);
|
|
}
|
|
|
|
int
|
|
cogl_framebuffer_get_red_bits (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
CoglFramebufferBits bits;
|
|
|
|
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits);
|
|
|
|
return bits.red;
|
|
}
|
|
|
|
int
|
|
cogl_framebuffer_get_green_bits (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
CoglFramebufferBits bits;
|
|
|
|
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits);
|
|
|
|
return bits.green;
|
|
}
|
|
|
|
int
|
|
cogl_framebuffer_get_blue_bits (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
CoglFramebufferBits bits;
|
|
|
|
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits);
|
|
|
|
return bits.blue;
|
|
}
|
|
|
|
int
|
|
cogl_framebuffer_get_alpha_bits (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
CoglFramebufferBits bits;
|
|
|
|
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits);
|
|
|
|
return bits.alpha;
|
|
}
|
|
|
|
int
|
|
cogl_framebuffer_get_depth_bits (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
CoglFramebufferBits bits;
|
|
|
|
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits);
|
|
|
|
return bits.depth;
|
|
}
|
|
|
|
int
|
|
_cogl_framebuffer_get_stencil_bits (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
CoglFramebufferBits bits;
|
|
|
|
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits);
|
|
|
|
return bits.stencil;
|
|
}
|
|
|
|
CoglColorMask
|
|
cogl_framebuffer_get_color_mask (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->color_mask;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_set_color_mask (CoglFramebuffer *framebuffer,
|
|
CoglColorMask color_mask)
|
|
{
|
|
/* XXX: Currently color mask changes don't go through the journal */
|
|
_cogl_framebuffer_flush_journal (framebuffer);
|
|
|
|
framebuffer->color_mask = color_mask;
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_COLOR_MASK;
|
|
}
|
|
|
|
CoglBool
|
|
cogl_framebuffer_get_dither_enabled (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->dither_enabled;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_set_dither_enabled (CoglFramebuffer *framebuffer,
|
|
CoglBool dither_enabled)
|
|
{
|
|
if (framebuffer->dither_enabled == dither_enabled)
|
|
return;
|
|
|
|
cogl_flush (); /* Currently dithering changes aren't tracked in the journal */
|
|
framebuffer->dither_enabled = dither_enabled;
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_DITHER;
|
|
}
|
|
|
|
CoglPixelFormat
|
|
cogl_framebuffer_get_color_format (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->format;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_set_depth_texture_enabled (CoglFramebuffer *framebuffer,
|
|
CoglBool enabled)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (!framebuffer->allocated);
|
|
|
|
framebuffer->config.depth_texture_enabled = enabled;
|
|
}
|
|
|
|
CoglBool
|
|
cogl_framebuffer_get_depth_texture_enabled (CoglFramebuffer *framebuffer)
|
|
{
|
|
return framebuffer->config.depth_texture_enabled;
|
|
}
|
|
|
|
CoglTexture *
|
|
cogl_framebuffer_get_depth_texture (CoglFramebuffer *framebuffer)
|
|
{
|
|
/* lazily allocate the framebuffer... */
|
|
if (!cogl_framebuffer_allocate (framebuffer, NULL))
|
|
return NULL;
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (cogl_is_offscreen (framebuffer), NULL);
|
|
return COGL_OFFSCREEN(framebuffer)->depth_texture;
|
|
}
|
|
|
|
int
|
|
cogl_framebuffer_get_samples_per_pixel (CoglFramebuffer *framebuffer)
|
|
{
|
|
if (framebuffer->allocated)
|
|
return framebuffer->samples_per_pixel;
|
|
else
|
|
return framebuffer->config.samples_per_pixel;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_set_samples_per_pixel (CoglFramebuffer *framebuffer,
|
|
int samples_per_pixel)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (!framebuffer->allocated);
|
|
|
|
framebuffer->config.samples_per_pixel = samples_per_pixel;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_resolve_samples (CoglFramebuffer *framebuffer)
|
|
{
|
|
cogl_framebuffer_resolve_samples_region (framebuffer,
|
|
0, 0,
|
|
framebuffer->width,
|
|
framebuffer->height);
|
|
|
|
/* TODO: Make this happen implicitly when the resolve texture next gets used
|
|
* as a source, either via cogl_texture_get_data(), via cogl_read_pixels() or
|
|
* if used as a source for rendering. We would also implicitly resolve if
|
|
* necessary before freeing a CoglFramebuffer.
|
|
*
|
|
* This API should still be kept but it is optional, only necessary
|
|
* if the user wants to explicitly control when the resolve happens e.g.
|
|
* to ensure it's done in advance of it being used as a source.
|
|
*
|
|
* Every texture should have a CoglFramebuffer *needs_resolve member
|
|
* internally. When the texture gets validated before being used as a source
|
|
* we should first check the needs_resolve pointer and if set we'll
|
|
* automatically call cogl_framebuffer_resolve_samples ().
|
|
*
|
|
* Calling cogl_framebuffer_resolve_samples() or
|
|
* cogl_framebuffer_resolve_samples_region() should reset the textures
|
|
* needs_resolve pointer to NULL.
|
|
*
|
|
* Rendering anything to a framebuffer will cause the corresponding
|
|
* texture's ->needs_resolve pointer to be set.
|
|
*
|
|
* XXX: Note: we only need to address this TODO item when adding support for
|
|
* EXT_framebuffer_multisample because currently we only support hardware
|
|
* that resolves implicitly anyway.
|
|
*/
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_resolve_samples_region (CoglFramebuffer *framebuffer,
|
|
int x,
|
|
int y,
|
|
int width,
|
|
int height)
|
|
{
|
|
/* NOP for now since we don't support EXT_framebuffer_multisample yet which
|
|
* requires an explicit resolve. */
|
|
}
|
|
|
|
CoglContext *
|
|
cogl_framebuffer_get_context (CoglFramebuffer *framebuffer)
|
|
{
|
|
_COGL_RETURN_VAL_IF_FAIL (framebuffer != NULL, NULL);
|
|
|
|
return framebuffer->context;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_framebuffer_try_fast_read_pixel (CoglFramebuffer *framebuffer,
|
|
int x,
|
|
int y,
|
|
CoglReadPixelsFlags source,
|
|
CoglBitmap *bitmap)
|
|
{
|
|
CoglBool found_intersection;
|
|
CoglPixelFormat format;
|
|
|
|
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_FAST_READ_PIXEL)))
|
|
return FALSE;
|
|
|
|
if (source != COGL_READ_PIXELS_COLOR_BUFFER)
|
|
return FALSE;
|
|
|
|
format = cogl_bitmap_get_format (bitmap);
|
|
|
|
if (format != COGL_PIXEL_FORMAT_RGBA_8888_PRE &&
|
|
format != COGL_PIXEL_FORMAT_RGBA_8888)
|
|
return FALSE;
|
|
|
|
if (!_cogl_journal_try_read_pixel (framebuffer->journal,
|
|
x, y, bitmap,
|
|
&found_intersection))
|
|
return FALSE;
|
|
|
|
/* If we can't determine the color from the primitives in the
|
|
* journal then see if we can use the last recorded clear color
|
|
*/
|
|
|
|
/* If _cogl_journal_try_read_pixel() failed even though there was an
|
|
* intersection of the given point with a primitive in the journal
|
|
* then we can't fallback to the framebuffer's last clear color...
|
|
* */
|
|
if (found_intersection)
|
|
return TRUE;
|
|
|
|
/* If the framebuffer has been rendered too since it was last
|
|
* cleared then we can't return the last known clear color. */
|
|
if (framebuffer->clear_clip_dirty)
|
|
return FALSE;
|
|
|
|
if (x >= framebuffer->clear_clip_x0 &&
|
|
x < framebuffer->clear_clip_x1 &&
|
|
y >= framebuffer->clear_clip_y0 &&
|
|
y < framebuffer->clear_clip_y1)
|
|
{
|
|
uint8_t *pixel;
|
|
CoglError *ignore_error = NULL;
|
|
|
|
/* we currently only care about cases where the premultiplied or
|
|
* unpremultipled colors are equivalent... */
|
|
if (framebuffer->clear_color_alpha != 1.0)
|
|
return FALSE;
|
|
|
|
pixel = _cogl_bitmap_map (bitmap,
|
|
COGL_BUFFER_ACCESS_WRITE,
|
|
COGL_BUFFER_MAP_HINT_DISCARD,
|
|
&ignore_error);
|
|
if (pixel == NULL)
|
|
{
|
|
cogl_error_free (ignore_error);
|
|
return FALSE;
|
|
}
|
|
|
|
pixel[0] = framebuffer->clear_color_red * 255.0;
|
|
pixel[1] = framebuffer->clear_color_green * 255.0;
|
|
pixel[2] = framebuffer->clear_color_blue * 255.0;
|
|
pixel[3] = framebuffer->clear_color_alpha * 255.0;
|
|
|
|
_cogl_bitmap_unmap (bitmap);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
CoglBool
|
|
_cogl_framebuffer_read_pixels_into_bitmap (CoglFramebuffer *framebuffer,
|
|
int x,
|
|
int y,
|
|
CoglReadPixelsFlags source,
|
|
CoglBitmap *bitmap,
|
|
CoglError **error)
|
|
{
|
|
CoglContext *ctx;
|
|
int width;
|
|
int height;
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (source & COGL_READ_PIXELS_COLOR_BUFFER, FALSE);
|
|
_COGL_RETURN_VAL_IF_FAIL (cogl_is_framebuffer (framebuffer), FALSE);
|
|
|
|
if (!cogl_framebuffer_allocate (framebuffer, error))
|
|
return FALSE;
|
|
|
|
width = cogl_bitmap_get_width (bitmap);
|
|
height = cogl_bitmap_get_height (bitmap);
|
|
|
|
if (width == 1 && height == 1 && !framebuffer->clear_clip_dirty)
|
|
{
|
|
/* If everything drawn so far for this frame is still in the
|
|
* Journal then if all of the rectangles only have a flat
|
|
* opaque color we have a fast-path for reading a single pixel
|
|
* that avoids the relatively high cost of flushing primitives
|
|
* to be drawn on the GPU (considering how simple the geometry
|
|
* is in this case) and then blocking on the long GPU pipelines
|
|
* for the result.
|
|
*/
|
|
if (_cogl_framebuffer_try_fast_read_pixel (framebuffer,
|
|
x, y, source, bitmap))
|
|
return TRUE;
|
|
}
|
|
|
|
ctx = cogl_framebuffer_get_context (framebuffer);
|
|
|
|
/* make sure any batched primitives get emitted to the driver
|
|
* before issuing our read pixels...
|
|
*/
|
|
_cogl_framebuffer_flush_journal (framebuffer);
|
|
|
|
return ctx->driver_vtable->framebuffer_read_pixels_into_bitmap (framebuffer,
|
|
x, y,
|
|
source,
|
|
bitmap,
|
|
error);
|
|
}
|
|
|
|
CoglBool
|
|
cogl_framebuffer_read_pixels_into_bitmap (CoglFramebuffer *framebuffer,
|
|
int x,
|
|
int y,
|
|
CoglReadPixelsFlags source,
|
|
CoglBitmap *bitmap)
|
|
{
|
|
CoglError *ignore_error = NULL;
|
|
CoglBool status =
|
|
_cogl_framebuffer_read_pixels_into_bitmap (framebuffer,
|
|
x, y, source, bitmap,
|
|
&ignore_error);
|
|
if (!status)
|
|
cogl_error_free (ignore_error);
|
|
return status;
|
|
}
|
|
|
|
CoglBool
|
|
cogl_framebuffer_read_pixels (CoglFramebuffer *framebuffer,
|
|
int x,
|
|
int y,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat format,
|
|
uint8_t *pixels)
|
|
{
|
|
int bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
|
|
CoglBitmap *bitmap;
|
|
CoglBool ret;
|
|
|
|
bitmap = cogl_bitmap_new_for_data (framebuffer->context,
|
|
width, height,
|
|
format,
|
|
bpp * width, /* rowstride */
|
|
pixels);
|
|
|
|
/* Note: we don't try and catch errors here since we created the
|
|
* bitmap storage up-front and can assume we wont hit an
|
|
* out-of-memory error which should be the only exception
|
|
* this api throws.
|
|
*/
|
|
ret = _cogl_framebuffer_read_pixels_into_bitmap (framebuffer,
|
|
x, y,
|
|
COGL_READ_PIXELS_COLOR_BUFFER,
|
|
bitmap,
|
|
NULL);
|
|
cogl_object_unref (bitmap);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
_cogl_blit_framebuffer (CoglFramebuffer *src,
|
|
CoglFramebuffer *dest,
|
|
int src_x,
|
|
int src_y,
|
|
int dst_x,
|
|
int dst_y,
|
|
int width,
|
|
int height)
|
|
{
|
|
CoglContext *ctx = src->context;
|
|
|
|
_COGL_RETURN_IF_FAIL (ctx->private_feature_flags &
|
|
COGL_PRIVATE_FEATURE_OFFSCREEN_BLIT);
|
|
|
|
/* We can only support blitting between offscreen buffers because
|
|
otherwise we would need to mirror the image and GLES2.0 doesn't
|
|
support this */
|
|
_COGL_RETURN_IF_FAIL (cogl_is_offscreen (src));
|
|
_COGL_RETURN_IF_FAIL (cogl_is_offscreen (dest));
|
|
/* The buffers must be the same format */
|
|
_COGL_RETURN_IF_FAIL (src->format == dest->format);
|
|
|
|
/* Make sure the current framebuffers are bound. We explicitly avoid
|
|
flushing the clip state so we can bind our own empty state */
|
|
_cogl_framebuffer_flush_state (dest,
|
|
src,
|
|
COGL_FRAMEBUFFER_STATE_ALL &
|
|
~COGL_FRAMEBUFFER_STATE_CLIP);
|
|
|
|
/* Flush any empty clip stack because glBlitFramebuffer is affected
|
|
by the scissor and we want to hide this feature for the Cogl API
|
|
because it's not obvious to an app how the clip state will affect
|
|
the scissor */
|
|
_cogl_clip_stack_flush (NULL, dest);
|
|
|
|
/* XXX: Because we are manually flushing clip state here we need to
|
|
* make sure that the clip state gets updated the next time we flush
|
|
* framebuffer state by marking the current framebuffer's clip state
|
|
* as changed */
|
|
ctx->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_CLIP;
|
|
|
|
ctx->glBlitFramebuffer (src_x, src_y,
|
|
src_x + width, src_y + height,
|
|
dst_x, dst_y,
|
|
dst_x + width, dst_y + height,
|
|
GL_COLOR_BUFFER_BIT,
|
|
GL_NEAREST);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_discard_buffers (CoglFramebuffer *framebuffer,
|
|
unsigned long buffers)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
|
|
_COGL_RETURN_IF_FAIL (buffers & COGL_BUFFER_BIT_COLOR);
|
|
|
|
ctx->driver_vtable->framebuffer_discard_buffers (framebuffer, buffers);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_finish (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
|
|
_cogl_framebuffer_flush_journal (framebuffer);
|
|
|
|
ctx->driver_vtable->framebuffer_finish (framebuffer);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_push_matrix (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_push (modelview_stack);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_pop_matrix (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_pop (modelview_stack);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_identity_matrix (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_load_identity (modelview_stack);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_scale (CoglFramebuffer *framebuffer,
|
|
float x,
|
|
float y,
|
|
float z)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_scale (modelview_stack, x, y, z);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_translate (CoglFramebuffer *framebuffer,
|
|
float x,
|
|
float y,
|
|
float z)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_translate (modelview_stack, x, y, z);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_rotate (CoglFramebuffer *framebuffer,
|
|
float angle,
|
|
float x,
|
|
float y,
|
|
float z)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_rotate (modelview_stack, angle, x, y, z);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_rotate_quaternion (CoglFramebuffer *framebuffer,
|
|
const CoglQuaternion *quaternion)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_rotate_quaternion (modelview_stack, quaternion);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_rotate_euler (CoglFramebuffer *framebuffer,
|
|
const CoglEuler *euler)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_rotate_euler (modelview_stack, euler);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_transform (CoglFramebuffer *framebuffer,
|
|
const CoglMatrix *matrix)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_multiply (modelview_stack, matrix);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_perspective (CoglFramebuffer *framebuffer,
|
|
float fov_y,
|
|
float aspect,
|
|
float z_near,
|
|
float z_far)
|
|
{
|
|
float ymax = z_near * tanf (fov_y * G_PI / 360.0);
|
|
|
|
cogl_framebuffer_frustum (framebuffer,
|
|
-ymax * aspect, /* left */
|
|
ymax * aspect, /* right */
|
|
-ymax, /* bottom */
|
|
ymax, /* top */
|
|
z_near,
|
|
z_far);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_PROJECTION;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_frustum (CoglFramebuffer *framebuffer,
|
|
float left,
|
|
float right,
|
|
float bottom,
|
|
float top,
|
|
float z_near,
|
|
float z_far)
|
|
{
|
|
CoglMatrixStack *projection_stack =
|
|
_cogl_framebuffer_get_projection_stack (framebuffer);
|
|
|
|
/* XXX: The projection matrix isn't currently tracked in the journal
|
|
* so we need to flush all journaled primitives first... */
|
|
_cogl_framebuffer_flush_journal (framebuffer);
|
|
|
|
cogl_matrix_stack_load_identity (projection_stack);
|
|
|
|
cogl_matrix_stack_frustum (projection_stack,
|
|
left,
|
|
right,
|
|
bottom,
|
|
top,
|
|
z_near,
|
|
z_far);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_PROJECTION;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_orthographic (CoglFramebuffer *framebuffer,
|
|
float x_1,
|
|
float y_1,
|
|
float x_2,
|
|
float y_2,
|
|
float near,
|
|
float far)
|
|
{
|
|
CoglMatrix ortho;
|
|
CoglMatrixStack *projection_stack =
|
|
_cogl_framebuffer_get_projection_stack (framebuffer);
|
|
|
|
/* XXX: The projection matrix isn't currently tracked in the journal
|
|
* so we need to flush all journaled primitives first... */
|
|
_cogl_framebuffer_flush_journal (framebuffer);
|
|
|
|
cogl_matrix_init_identity (&ortho);
|
|
cogl_matrix_orthographic (&ortho, x_1, y_1, x_2, y_2, near, far);
|
|
cogl_matrix_stack_set (projection_stack, &ortho);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_PROJECTION;
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_push_projection (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglMatrixStack *projection_stack =
|
|
_cogl_framebuffer_get_projection_stack (framebuffer);
|
|
cogl_matrix_stack_push (projection_stack);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_PROJECTION;
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_pop_projection (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglMatrixStack *projection_stack =
|
|
_cogl_framebuffer_get_projection_stack (framebuffer);
|
|
cogl_matrix_stack_pop (projection_stack);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_PROJECTION;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_get_modelview_matrix (CoglFramebuffer *framebuffer,
|
|
CoglMatrix *matrix)
|
|
{
|
|
CoglMatrixEntry *modelview_entry =
|
|
_cogl_framebuffer_get_modelview_entry (framebuffer);
|
|
cogl_matrix_entry_get (modelview_entry, matrix);
|
|
_COGL_MATRIX_DEBUG_PRINT (matrix);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_set_modelview_matrix (CoglFramebuffer *framebuffer,
|
|
const CoglMatrix *matrix)
|
|
{
|
|
CoglMatrixStack *modelview_stack =
|
|
_cogl_framebuffer_get_modelview_stack (framebuffer);
|
|
cogl_matrix_stack_set (modelview_stack, matrix);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_MODELVIEW;
|
|
|
|
_COGL_MATRIX_DEBUG_PRINT (matrix);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_get_projection_matrix (CoglFramebuffer *framebuffer,
|
|
CoglMatrix *matrix)
|
|
{
|
|
CoglMatrixEntry *projection_entry =
|
|
_cogl_framebuffer_get_projection_entry (framebuffer);
|
|
cogl_matrix_entry_get (projection_entry, matrix);
|
|
_COGL_MATRIX_DEBUG_PRINT (matrix);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_set_projection_matrix (CoglFramebuffer *framebuffer,
|
|
const CoglMatrix *matrix)
|
|
{
|
|
CoglMatrixStack *projection_stack =
|
|
_cogl_framebuffer_get_projection_stack (framebuffer);
|
|
|
|
/* XXX: The projection matrix isn't currently tracked in the journal
|
|
* so we need to flush all journaled primitives first... */
|
|
_cogl_framebuffer_flush_journal (framebuffer);
|
|
|
|
cogl_matrix_stack_set (projection_stack, matrix);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_PROJECTION;
|
|
|
|
_COGL_MATRIX_DEBUG_PRINT (matrix);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_push_scissor_clip (CoglFramebuffer *framebuffer,
|
|
int x,
|
|
int y,
|
|
int width,
|
|
int height)
|
|
{
|
|
CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
|
|
|
|
clip_state->stacks->data =
|
|
_cogl_clip_stack_push_window_rectangle (clip_state->stacks->data,
|
|
x, y, width, height);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_CLIP;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_push_rectangle_clip (CoglFramebuffer *framebuffer,
|
|
float x_1,
|
|
float y_1,
|
|
float x_2,
|
|
float y_2)
|
|
{
|
|
CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
|
|
CoglMatrixEntry *modelview_entry =
|
|
_cogl_framebuffer_get_modelview_entry (framebuffer);
|
|
CoglMatrixEntry *projection_entry =
|
|
_cogl_framebuffer_get_projection_entry (framebuffer);
|
|
/* XXX: It would be nicer if we stored the private viewport as a
|
|
* vec4 so we could avoid this redundant copy. */
|
|
float viewport[] = {
|
|
framebuffer->viewport_x,
|
|
framebuffer->viewport_y,
|
|
framebuffer->viewport_width,
|
|
framebuffer->viewport_height
|
|
};
|
|
|
|
clip_state->stacks->data =
|
|
_cogl_clip_stack_push_rectangle (clip_state->stacks->data,
|
|
x_1, y_1, x_2, y_2,
|
|
modelview_entry,
|
|
projection_entry,
|
|
viewport);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_CLIP;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_push_path_clip (CoglFramebuffer *framebuffer,
|
|
CoglPath *path)
|
|
{
|
|
CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
|
|
CoglMatrixEntry *modelview_entry =
|
|
_cogl_framebuffer_get_modelview_entry (framebuffer);
|
|
CoglMatrixEntry *projection_entry =
|
|
_cogl_framebuffer_get_projection_entry (framebuffer);
|
|
/* XXX: It would be nicer if we stored the private viewport as a
|
|
* vec4 so we could avoid this redundant copy. */
|
|
float viewport[] = {
|
|
framebuffer->viewport_x,
|
|
framebuffer->viewport_y,
|
|
framebuffer->viewport_width,
|
|
framebuffer->viewport_height
|
|
};
|
|
|
|
clip_state->stacks->data =
|
|
_cogl_clip_stack_push_from_path (clip_state->stacks->data,
|
|
path,
|
|
modelview_entry,
|
|
projection_entry,
|
|
viewport);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_CLIP;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_push_primitive_clip (CoglFramebuffer *framebuffer,
|
|
CoglPrimitive *primitive,
|
|
float bounds_x1,
|
|
float bounds_y1,
|
|
float bounds_x2,
|
|
float bounds_y2)
|
|
{
|
|
CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
|
|
CoglMatrixEntry *modelview_entry =
|
|
_cogl_framebuffer_get_modelview_entry (framebuffer);
|
|
CoglMatrixEntry *projection_entry =
|
|
_cogl_framebuffer_get_projection_entry (framebuffer);
|
|
/* XXX: It would be nicer if we stored the private viewport as a
|
|
* vec4 so we could avoid this redundant copy. */
|
|
float viewport[] = {
|
|
framebuffer->viewport_x,
|
|
framebuffer->viewport_y,
|
|
framebuffer->viewport_width,
|
|
framebuffer->viewport_height
|
|
};
|
|
|
|
clip_state->stacks->data =
|
|
_cogl_clip_stack_push_primitive (clip_state->stacks->data,
|
|
primitive,
|
|
bounds_x1, bounds_y1,
|
|
bounds_x2, bounds_y2,
|
|
modelview_entry,
|
|
projection_entry,
|
|
viewport);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_CLIP;
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_pop_clip (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
|
|
|
|
clip_state->stacks->data = _cogl_clip_stack_pop (clip_state->stacks->data);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_CLIP;
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_save_clip_stack (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
|
|
_cogl_clip_state_save_clip_stack (clip_state);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_CLIP;
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_restore_clip_stack (CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglClipState *clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
|
|
_cogl_clip_state_restore_clip_stack (clip_state);
|
|
|
|
if (framebuffer->context->current_draw_buffer == framebuffer)
|
|
framebuffer->context->current_draw_buffer_changes |=
|
|
COGL_FRAMEBUFFER_STATE_CLIP;
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_unref (CoglFramebuffer *framebuffer)
|
|
{
|
|
/* The journal holds a reference to the framebuffer whenever it is
|
|
non-empty. Therefore if the journal is non-empty and we will have
|
|
exactly one reference then we know the journal is the only thing
|
|
keeping the framebuffer alive. In that case we want to flush the
|
|
journal and let the framebuffer die. It is fine at this point if
|
|
flushing the journal causes something else to take a reference to
|
|
it and it comes back to life */
|
|
if (framebuffer->journal->entries->len > 0)
|
|
{
|
|
unsigned int ref_count = ((CoglObject *) framebuffer)->ref_count;
|
|
|
|
/* There should be at least two references - the one we are
|
|
about to drop and the one held by the journal */
|
|
if (ref_count < 2)
|
|
g_warning ("Inconsistent ref count on a framebuffer with journal "
|
|
"entries.");
|
|
|
|
if (ref_count == 2)
|
|
_cogl_framebuffer_flush_journal (framebuffer);
|
|
}
|
|
|
|
/* Chain-up */
|
|
_cogl_object_default_unref (framebuffer);
|
|
}
|
|
|
|
#ifdef COGL_ENABLE_DEBUG
|
|
static int
|
|
get_index (void *indices,
|
|
CoglIndicesType type,
|
|
int _index)
|
|
{
|
|
if (!indices)
|
|
return _index;
|
|
|
|
switch (type)
|
|
{
|
|
case COGL_INDICES_TYPE_UNSIGNED_BYTE:
|
|
return ((uint8_t *)indices)[_index];
|
|
case COGL_INDICES_TYPE_UNSIGNED_SHORT:
|
|
return ((uint16_t *)indices)[_index];
|
|
case COGL_INDICES_TYPE_UNSIGNED_INT:
|
|
return ((uint32_t *)indices)[_index];
|
|
}
|
|
|
|
g_return_val_if_reached (0);
|
|
}
|
|
|
|
static void
|
|
add_line (uint32_t *line_indices,
|
|
int base,
|
|
void *user_indices,
|
|
CoglIndicesType user_indices_type,
|
|
int index0,
|
|
int index1,
|
|
int *pos)
|
|
{
|
|
index0 = get_index (user_indices, user_indices_type, index0);
|
|
index1 = get_index (user_indices, user_indices_type, index1);
|
|
|
|
line_indices[(*pos)++] = base + index0;
|
|
line_indices[(*pos)++] = base + index1;
|
|
}
|
|
|
|
static int
|
|
get_line_count (CoglVerticesMode mode, int n_vertices)
|
|
{
|
|
if (mode == COGL_VERTICES_MODE_TRIANGLES &&
|
|
(n_vertices % 3) == 0)
|
|
{
|
|
return n_vertices;
|
|
}
|
|
else if (mode == COGL_VERTICES_MODE_TRIANGLE_FAN &&
|
|
n_vertices >= 3)
|
|
{
|
|
return 2 * n_vertices - 3;
|
|
}
|
|
else if (mode == COGL_VERTICES_MODE_TRIANGLE_STRIP &&
|
|
n_vertices >= 3)
|
|
{
|
|
return 2 * n_vertices - 3;
|
|
}
|
|
/* In the journal we are a bit sneaky and actually use GL_QUADS
|
|
* which isn't actually a valid CoglVerticesMode! */
|
|
#ifdef HAVE_COGL_GL
|
|
else if (mode == GL_QUADS && (n_vertices % 4) == 0)
|
|
{
|
|
return n_vertices;
|
|
}
|
|
#endif
|
|
|
|
g_return_val_if_reached (0);
|
|
}
|
|
|
|
static CoglIndices *
|
|
get_wire_line_indices (CoglContext *ctx,
|
|
CoglVerticesMode mode,
|
|
int first_vertex,
|
|
int n_vertices_in,
|
|
CoglIndices *user_indices,
|
|
int *n_indices)
|
|
{
|
|
int n_lines;
|
|
uint32_t *line_indices;
|
|
CoglIndexBuffer *index_buffer;
|
|
void *indices;
|
|
CoglIndicesType indices_type;
|
|
int base = first_vertex;
|
|
int pos;
|
|
int i;
|
|
CoglIndices *ret;
|
|
|
|
if (user_indices)
|
|
{
|
|
index_buffer = cogl_indices_get_buffer (user_indices);
|
|
indices = _cogl_buffer_map (COGL_BUFFER (index_buffer),
|
|
COGL_BUFFER_ACCESS_READ, 0,
|
|
NULL);
|
|
indices_type = cogl_indices_get_type (user_indices);
|
|
}
|
|
else
|
|
{
|
|
index_buffer = NULL;
|
|
indices = NULL;
|
|
indices_type = COGL_INDICES_TYPE_UNSIGNED_BYTE;
|
|
}
|
|
|
|
n_lines = get_line_count (mode, n_vertices_in);
|
|
|
|
/* Note: we are using COGL_INDICES_TYPE_UNSIGNED_INT so 4 bytes per index. */
|
|
line_indices = g_malloc (4 * n_lines * 2);
|
|
|
|
pos = 0;
|
|
|
|
if (mode == COGL_VERTICES_MODE_TRIANGLES &&
|
|
(n_vertices_in % 3) == 0)
|
|
{
|
|
for (i = 0; i < n_vertices_in; i += 3)
|
|
{
|
|
add_line (line_indices, base, indices, indices_type, i, i+1, &pos);
|
|
add_line (line_indices, base, indices, indices_type, i+1, i+2, &pos);
|
|
add_line (line_indices, base, indices, indices_type, i+2, i, &pos);
|
|
}
|
|
}
|
|
else if (mode == COGL_VERTICES_MODE_TRIANGLE_FAN &&
|
|
n_vertices_in >= 3)
|
|
{
|
|
add_line (line_indices, base, indices, indices_type, 0, 1, &pos);
|
|
add_line (line_indices, base, indices, indices_type, 1, 2, &pos);
|
|
add_line (line_indices, base, indices, indices_type, 0, 2, &pos);
|
|
|
|
for (i = 3; i < n_vertices_in; i++)
|
|
{
|
|
add_line (line_indices, base, indices, indices_type, i - 1, i, &pos);
|
|
add_line (line_indices, base, indices, indices_type, 0, i, &pos);
|
|
}
|
|
}
|
|
else if (mode == COGL_VERTICES_MODE_TRIANGLE_STRIP &&
|
|
n_vertices_in >= 3)
|
|
{
|
|
add_line (line_indices, base, indices, indices_type, 0, 1, &pos);
|
|
add_line (line_indices, base, indices, indices_type, 1, 2, &pos);
|
|
add_line (line_indices, base, indices, indices_type, 0, 2, &pos);
|
|
|
|
for (i = 3; i < n_vertices_in; i++)
|
|
{
|
|
add_line (line_indices, base, indices, indices_type, i - 1, i, &pos);
|
|
add_line (line_indices, base, indices, indices_type, i - 2, i, &pos);
|
|
}
|
|
}
|
|
/* In the journal we are a bit sneaky and actually use GL_QUADS
|
|
* which isn't actually a valid CoglVerticesMode! */
|
|
#ifdef HAVE_COGL_GL
|
|
else if (mode == GL_QUADS && (n_vertices_in % 4) == 0)
|
|
{
|
|
for (i = 0; i < n_vertices_in; i += 4)
|
|
{
|
|
add_line (line_indices,
|
|
base, indices, indices_type, i, i + 1, &pos);
|
|
add_line (line_indices,
|
|
base, indices, indices_type, i + 1, i + 2, &pos);
|
|
add_line (line_indices,
|
|
base, indices, indices_type, i + 2, i + 3, &pos);
|
|
add_line (line_indices,
|
|
base, indices, indices_type, i + 3, i, &pos);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (user_indices)
|
|
cogl_buffer_unmap (COGL_BUFFER (index_buffer));
|
|
|
|
*n_indices = n_lines * 2;
|
|
|
|
ret = cogl_indices_new (ctx,
|
|
COGL_INDICES_TYPE_UNSIGNED_INT,
|
|
line_indices,
|
|
*n_indices);
|
|
|
|
g_free (line_indices);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static CoglBool
|
|
remove_layer_cb (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
void *user_data)
|
|
{
|
|
cogl_pipeline_remove_layer (pipeline, layer_index);
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
pipeline_destroyed_cb (CoglPipeline *weak_pipeline, void *user_data)
|
|
{
|
|
CoglPipeline *original_pipeline = user_data;
|
|
|
|
/* XXX: I think we probably need to provide a custom unref function for
|
|
* CoglPipeline because it's possible that we will reach this callback
|
|
* because original_pipeline is being freed which means cogl_object_unref
|
|
* will have already freed any associated user data.
|
|
*
|
|
* Setting more user data here will *probably* succeed but that may allocate
|
|
* a new user-data array which could be leaked.
|
|
*
|
|
* Potentially we could have a _cogl_object_free_user_data function so
|
|
* that a custom unref function could be written that can destroy weak
|
|
* pipeline children before removing user data.
|
|
*/
|
|
cogl_object_set_user_data (COGL_OBJECT (original_pipeline),
|
|
&wire_pipeline_key, NULL, NULL);
|
|
|
|
cogl_object_unref (weak_pipeline);
|
|
}
|
|
|
|
static void
|
|
draw_wireframe (CoglContext *ctx,
|
|
CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
CoglVerticesMode mode,
|
|
int first_vertex,
|
|
int n_vertices,
|
|
CoglAttribute **attributes,
|
|
int n_attributes,
|
|
CoglIndices *indices,
|
|
CoglDrawFlags flags)
|
|
{
|
|
CoglIndices *wire_indices;
|
|
CoglPipeline *wire_pipeline;
|
|
int n_indices;
|
|
|
|
wire_indices = get_wire_line_indices (ctx,
|
|
mode,
|
|
first_vertex,
|
|
n_vertices,
|
|
indices,
|
|
&n_indices);
|
|
|
|
wire_pipeline = cogl_object_get_user_data (COGL_OBJECT (pipeline),
|
|
&wire_pipeline_key);
|
|
|
|
if (!wire_pipeline)
|
|
{
|
|
wire_pipeline =
|
|
_cogl_pipeline_weak_copy (pipeline, pipeline_destroyed_cb, NULL);
|
|
|
|
cogl_object_set_user_data (COGL_OBJECT (pipeline),
|
|
&wire_pipeline_key, wire_pipeline,
|
|
NULL);
|
|
|
|
/* If we have glsl then the pipeline may have an associated
|
|
* vertex program and since we'd like to see the results of the
|
|
* vertex program in the wireframe we just add a final clobber
|
|
* of the wire color leaving the rest of the state untouched. */
|
|
if (cogl_has_feature (framebuffer->context, COGL_FEATURE_ID_GLSL))
|
|
{
|
|
static CoglSnippet *snippet = NULL;
|
|
|
|
/* The snippet is cached so that it will reuse the program
|
|
* from the pipeline cache if possible */
|
|
if (snippet == NULL)
|
|
{
|
|
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
|
|
NULL,
|
|
NULL);
|
|
cogl_snippet_set_replace (snippet,
|
|
"cogl_color_out = "
|
|
"vec4 (0.0, 1.0, 0.0, 1.0);\n");
|
|
}
|
|
|
|
cogl_pipeline_add_snippet (wire_pipeline, snippet);
|
|
}
|
|
else
|
|
{
|
|
cogl_pipeline_foreach_layer (wire_pipeline, remove_layer_cb, NULL);
|
|
cogl_pipeline_set_color4f (wire_pipeline, 0, 1, 0, 1);
|
|
}
|
|
}
|
|
|
|
/* temporarily disable the wireframe to avoid recursion! */
|
|
flags |= COGL_DRAW_SKIP_DEBUG_WIREFRAME;
|
|
_cogl_framebuffer_draw_indexed_attributes (
|
|
framebuffer,
|
|
wire_pipeline,
|
|
COGL_VERTICES_MODE_LINES,
|
|
0,
|
|
n_indices,
|
|
wire_indices,
|
|
attributes,
|
|
n_attributes,
|
|
flags);
|
|
COGL_DEBUG_SET_FLAG (COGL_DEBUG_WIREFRAME);
|
|
|
|
cogl_object_unref (wire_indices);
|
|
}
|
|
#endif
|
|
|
|
/* This can be called directly by the CoglJournal to draw attributes
|
|
* skipping the implicit journal flush, the framebuffer flush and
|
|
* pipeline validation. */
|
|
void
|
|
_cogl_framebuffer_draw_attributes (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
CoglVerticesMode mode,
|
|
int first_vertex,
|
|
int n_vertices,
|
|
CoglAttribute **attributes,
|
|
int n_attributes,
|
|
CoglDrawFlags flags)
|
|
{
|
|
#ifdef COGL_ENABLE_DEBUG
|
|
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_WIREFRAME) &&
|
|
(flags & COGL_DRAW_SKIP_DEBUG_WIREFRAME) == 0) &&
|
|
mode != COGL_VERTICES_MODE_LINES &&
|
|
mode != COGL_VERTICES_MODE_LINE_LOOP &&
|
|
mode != COGL_VERTICES_MODE_LINE_STRIP)
|
|
draw_wireframe (framebuffer->context,
|
|
framebuffer, pipeline,
|
|
mode, first_vertex, n_vertices,
|
|
attributes, n_attributes, NULL,
|
|
flags);
|
|
else
|
|
#endif
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
|
|
ctx->driver_vtable->framebuffer_draw_attributes (framebuffer,
|
|
pipeline,
|
|
mode,
|
|
first_vertex,
|
|
n_vertices,
|
|
attributes,
|
|
n_attributes,
|
|
flags);
|
|
}
|
|
}
|
|
|
|
void
|
|
_cogl_framebuffer_draw_indexed_attributes (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
CoglVerticesMode mode,
|
|
int first_vertex,
|
|
int n_vertices,
|
|
CoglIndices *indices,
|
|
CoglAttribute **attributes,
|
|
int n_attributes,
|
|
CoglDrawFlags flags)
|
|
{
|
|
#ifdef COGL_ENABLE_DEBUG
|
|
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_WIREFRAME) &&
|
|
(flags & COGL_DRAW_SKIP_DEBUG_WIREFRAME) == 0) &&
|
|
mode != COGL_VERTICES_MODE_LINES &&
|
|
mode != COGL_VERTICES_MODE_LINE_LOOP &&
|
|
mode != COGL_VERTICES_MODE_LINE_STRIP)
|
|
draw_wireframe (framebuffer->context,
|
|
framebuffer, pipeline,
|
|
mode, first_vertex, n_vertices,
|
|
attributes, n_attributes, indices,
|
|
flags);
|
|
else
|
|
#endif
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
|
|
ctx->driver_vtable->framebuffer_draw_indexed_attributes (framebuffer,
|
|
pipeline,
|
|
mode,
|
|
first_vertex,
|
|
n_vertices,
|
|
indices,
|
|
attributes,
|
|
n_attributes,
|
|
flags);
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_draw_primitive (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
CoglPrimitive *primitive)
|
|
{
|
|
_cogl_primitive_draw (primitive, framebuffer, pipeline,
|
|
COGL_DRAW_SKIP_LEGACY_STATE);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_draw_rectangle (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
float x_1,
|
|
float y_1,
|
|
float x_2,
|
|
float y_2)
|
|
{
|
|
const float position[4] = {x_1, y_1, x_2, y_2};
|
|
CoglMultiTexturedRect rect;
|
|
|
|
/* XXX: All the _*_rectangle* APIs normalize their input into an array of
|
|
* _CoglMultiTexturedRect rectangles and pass these on to our work horse;
|
|
* _cogl_framebuffer_draw_multitextured_rectangles.
|
|
*/
|
|
|
|
rect.position = position;
|
|
rect.tex_coords = NULL;
|
|
rect.tex_coords_len = 0;
|
|
|
|
_cogl_framebuffer_draw_multitextured_rectangles (framebuffer,
|
|
pipeline,
|
|
&rect,
|
|
1,
|
|
TRUE);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_draw_textured_rectangle (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
float x_1,
|
|
float y_1,
|
|
float x_2,
|
|
float y_2,
|
|
float s_1,
|
|
float t_1,
|
|
float s_2,
|
|
float t_2)
|
|
{
|
|
const float position[4] = {x_1, y_1, x_2, y_2};
|
|
const float tex_coords[4] = {s_1, t_1, s_2, t_2};
|
|
CoglMultiTexturedRect rect;
|
|
|
|
/* XXX: All the _*_rectangle* APIs normalize their input into an array of
|
|
* CoglMultiTexturedRect rectangles and pass these on to our work horse;
|
|
* _cogl_framebuffer_draw_multitextured_rectangles.
|
|
*/
|
|
|
|
rect.position = position;
|
|
rect.tex_coords = tex_coords;
|
|
rect.tex_coords_len = 4;
|
|
|
|
_cogl_framebuffer_draw_multitextured_rectangles (framebuffer,
|
|
pipeline,
|
|
&rect,
|
|
1,
|
|
TRUE);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_draw_multitextured_rectangle (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
float x_1,
|
|
float y_1,
|
|
float x_2,
|
|
float y_2,
|
|
const float *tex_coords,
|
|
int tex_coords_len)
|
|
{
|
|
const float position[4] = {x_1, y_1, x_2, y_2};
|
|
CoglMultiTexturedRect rect;
|
|
|
|
/* XXX: All the _*_rectangle* APIs normalize their input into an array of
|
|
* CoglMultiTexturedRect rectangles and pass these on to our work horse;
|
|
* _cogl_framebuffer_draw_multitextured_rectangles.
|
|
*/
|
|
|
|
rect.position = position;
|
|
rect.tex_coords = tex_coords;
|
|
rect.tex_coords_len = tex_coords_len;
|
|
|
|
_cogl_framebuffer_draw_multitextured_rectangles (framebuffer,
|
|
pipeline,
|
|
&rect,
|
|
1,
|
|
TRUE);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_draw_rectangles (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
const float *coordinates,
|
|
unsigned int n_rectangles)
|
|
{
|
|
CoglMultiTexturedRect *rects;
|
|
int i;
|
|
|
|
/* XXX: All the _*_rectangle* APIs normalize their input into an array of
|
|
* CoglMultiTexturedRect rectangles and pass these on to our work horse;
|
|
* _cogl_framebuffer_draw_multitextured_rectangles.
|
|
*/
|
|
|
|
rects = g_alloca (n_rectangles * sizeof (CoglMultiTexturedRect));
|
|
|
|
for (i = 0; i < n_rectangles; i++)
|
|
{
|
|
rects[i].position = &coordinates[i * 4];
|
|
rects[i].tex_coords = NULL;
|
|
rects[i].tex_coords_len = 0;
|
|
}
|
|
|
|
_cogl_framebuffer_draw_multitextured_rectangles (framebuffer,
|
|
pipeline,
|
|
rects,
|
|
n_rectangles,
|
|
TRUE);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_draw_textured_rectangles (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
const float *coordinates,
|
|
unsigned int n_rectangles)
|
|
{
|
|
CoglMultiTexturedRect *rects;
|
|
int i;
|
|
|
|
/* XXX: All the _*_rectangle* APIs normalize their input into an array of
|
|
* _CoglMultiTexturedRect rectangles and pass these on to our work horse;
|
|
* _cogl_framebuffer_draw_multitextured_rectangles.
|
|
*/
|
|
|
|
rects = g_alloca (n_rectangles * sizeof (CoglMultiTexturedRect));
|
|
|
|
for (i = 0; i < n_rectangles; i++)
|
|
{
|
|
rects[i].position = &coordinates[i * 8];
|
|
rects[i].tex_coords = &coordinates[i * 8 + 4];
|
|
rects[i].tex_coords_len = 4;
|
|
}
|
|
|
|
_cogl_framebuffer_draw_multitextured_rectangles (framebuffer,
|
|
pipeline,
|
|
rects,
|
|
n_rectangles,
|
|
TRUE);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_fill_path (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
CoglPath *path)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (cogl_is_framebuffer (framebuffer));
|
|
_COGL_RETURN_IF_FAIL (cogl_is_pipeline (pipeline));
|
|
_COGL_RETURN_IF_FAIL (cogl_is_path (path));
|
|
|
|
_cogl_path_fill_nodes (path, framebuffer, pipeline, 0 /* flags */);
|
|
}
|
|
|
|
void
|
|
cogl_framebuffer_stroke_path (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
CoglPath *path)
|
|
{
|
|
_COGL_RETURN_IF_FAIL (cogl_is_framebuffer (framebuffer));
|
|
_COGL_RETURN_IF_FAIL (cogl_is_pipeline (pipeline));
|
|
_COGL_RETURN_IF_FAIL (cogl_is_path (path));
|
|
|
|
_cogl_path_stroke_nodes (path, framebuffer, pipeline);
|
|
}
|