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bf8a1b1eda
The ‘builtin uniforms’ are added to the GLSL code generated for the GLES2 driver to implement missing fixed functionality such as the builtin point sprite size and the alpha test reference. Previously the code that accessed these was #ifdef'd to be compiled only when GLES2 was enabled. However since 2701b93f part of this code is now always used even for non-GLES2 drivers. The code that accessed the builtin uniforms array was however no longer #ifdef'd which meant that it wouldn't compile any more if GLES2 was not enabled. This was further broken becase the GL3 driver actually should be using the alpha test uniform because that also does not provide any fixed functionality for alpha testing. To fix this the builtin uniform array is now always compiled in and the code to access it is always used. A new member has been added to the array to mark which private feature the uniform is used to replace. That is checked before updating the uniform so that under GLES2 it will update both uniforms but under GL3 it will only update the alpha test reference. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 5469a25413883080df75a80153accf5d9124f716)
1063 lines
34 KiB
C
1063 lines
34 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) 2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Neil Roberts <neil@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "cogl-util.h"
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#include "cogl-context-private.h"
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#include "cogl-pipeline-private.h"
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#include "cogl-pipeline-opengl-private.h"
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#include "cogl-offscreen.h"
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#ifdef COGL_PIPELINE_PROGEND_GLSL
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#include "cogl-internal.h"
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#include "cogl-context-private.h"
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#include "cogl-object-private.h"
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#include "cogl-program-private.h"
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#include "cogl-pipeline-fragend-glsl-private.h"
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#include "cogl-pipeline-vertend-glsl-private.h"
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#include "cogl-pipeline-cache.h"
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#include "cogl-pipeline-state-private.h"
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#include "cogl-attribute-private.h"
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#include "cogl-framebuffer-private.h"
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#include "cogl-pipeline-progend-glsl-private.h"
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/* These are used to generalise updating some uniforms that are
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required when building for drivers missing some fixed function
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state that we use */
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typedef void (* UpdateUniformFunc) (CoglPipeline *pipeline,
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int uniform_location,
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void *getter_func);
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static void update_float_uniform (CoglPipeline *pipeline,
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int uniform_location,
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void *getter_func);
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typedef struct
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{
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const char *uniform_name;
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void *getter_func;
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UpdateUniformFunc update_func;
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CoglPipelineState change;
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/* This builtin is only necessary if the following private feature
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* is not implemented in the driver */
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CoglPrivateFeatureFlags feature_replacement;
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} BuiltinUniformData;
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static BuiltinUniformData builtin_uniforms[] =
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{
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{ "cogl_point_size_in",
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cogl_pipeline_get_point_size, update_float_uniform,
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COGL_PIPELINE_STATE_POINT_SIZE,
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COGL_PRIVATE_FEATURE_BUILTIN_POINT_SIZE_UNIFORM },
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{ "_cogl_alpha_test_ref",
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cogl_pipeline_get_alpha_test_reference, update_float_uniform,
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COGL_PIPELINE_STATE_ALPHA_FUNC_REFERENCE,
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COGL_PRIVATE_FEATURE_ALPHA_TEST }
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};
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const CoglPipelineProgend _cogl_pipeline_glsl_progend;
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typedef struct _UnitState
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{
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unsigned int dirty_combine_constant:1;
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unsigned int dirty_texture_matrix:1;
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GLint combine_constant_uniform;
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GLint texture_matrix_uniform;
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} UnitState;
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typedef struct
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{
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unsigned int ref_count;
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/* Age that the user program had last time we generated a GL
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program. If it's different then we need to relink the program */
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unsigned int user_program_age;
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GLuint program;
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/* To allow writing shaders that are portable between GLES 2 and
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* OpenGL Cogl prepends a number of boilerplate #defines and
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* declarations to user shaders. One of those declarations is an
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* array of texture coordinate varyings, but to know how to emit the
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* declaration we need to know how many texture coordinate
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* attributes are in use. The boilerplate also needs to be changed
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* if this changes. */
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int n_tex_coord_attribs;
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unsigned long dirty_builtin_uniforms;
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GLint builtin_uniform_locations[G_N_ELEMENTS (builtin_uniforms)];
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GLint modelview_uniform;
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GLint projection_uniform;
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GLint mvp_uniform;
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CoglMatrixEntryCache projection_cache;
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CoglMatrixEntryCache modelview_cache;
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/* We need to track the last pipeline that the program was used with
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* so know if we need to update all of the uniforms */
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CoglPipeline *last_used_for_pipeline;
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/* Array of GL uniform locations indexed by Cogl's uniform
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location. We are careful only to allocated this array if a custom
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uniform is actually set */
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GArray *uniform_locations;
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/* Array of attribute locations. */
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GArray *attribute_locations;
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/* The 'flip' uniform is used to flip the geometry upside-down when
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the framebuffer requires it only when there are vertex
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snippets. Otherwise this is acheived using the projection
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matrix */
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GLint flip_uniform;
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int flushed_flip_state;
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UnitState *unit_state;
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} CoglPipelineProgramState;
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static CoglUserDataKey program_state_key;
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static CoglPipelineProgramState *
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get_program_state (CoglPipeline *pipeline)
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{
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return cogl_object_get_user_data (COGL_OBJECT (pipeline), &program_state_key);
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}
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#define UNIFORM_LOCATION_UNKNOWN -2
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#define ATTRIBUTE_LOCATION_UNKNOWN -2
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/* Under GLES2 the vertex attribute API needs to query the attribute
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numbers because it can't used the fixed function API to set the
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builtin attributes. We cache the attributes here because the
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progend knows when the program is changed so it can clear the
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cache. This should always be called after the pipeline is flushed
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so they can assert that the gl program is valid */
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/* All attributes names get internally mapped to a global set of
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* sequential indices when they are setup which we need to need to
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* then be able to map to a GL attribute location once we have
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* a linked GLSL program */
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int
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_cogl_pipeline_progend_glsl_get_attrib_location (CoglPipeline *pipeline,
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int name_index)
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{
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CoglPipelineProgramState *program_state = get_program_state (pipeline);
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int *locations;
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_COGL_GET_CONTEXT (ctx, -1);
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_COGL_RETURN_VAL_IF_FAIL (program_state != NULL, -1);
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_COGL_RETURN_VAL_IF_FAIL (program_state->program != 0, -1);
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if (G_UNLIKELY (program_state->attribute_locations == NULL))
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program_state->attribute_locations =
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g_array_new (FALSE, FALSE, sizeof (int));
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if (G_UNLIKELY (program_state->attribute_locations->len <= name_index))
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{
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int i = program_state->attribute_locations->len;
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g_array_set_size (program_state->attribute_locations, name_index + 1);
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for (; i < program_state->attribute_locations->len; i++)
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g_array_index (program_state->attribute_locations, int, i)
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= ATTRIBUTE_LOCATION_UNKNOWN;
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}
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locations = &g_array_index (program_state->attribute_locations, int, 0);
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if (locations[name_index] == ATTRIBUTE_LOCATION_UNKNOWN)
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{
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CoglAttributeNameState *name_state =
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g_array_index (ctx->attribute_name_index_map,
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CoglAttributeNameState *, name_index);
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_COGL_RETURN_VAL_IF_FAIL (name_state != NULL, 0);
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GE_RET( locations[name_index],
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ctx, glGetAttribLocation (program_state->program,
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name_state->name) );
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}
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return locations[name_index];
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}
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static void
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clear_attribute_cache (CoglPipelineProgramState *program_state)
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{
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if (program_state->attribute_locations)
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{
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g_array_free (program_state->attribute_locations, TRUE);
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program_state->attribute_locations = NULL;
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}
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}
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static void
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clear_flushed_matrix_stacks (CoglPipelineProgramState *program_state)
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{
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_cogl_matrix_entry_cache_destroy (&program_state->projection_cache);
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_cogl_matrix_entry_cache_init (&program_state->projection_cache);
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_cogl_matrix_entry_cache_destroy (&program_state->modelview_cache);
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_cogl_matrix_entry_cache_init (&program_state->modelview_cache);
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}
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static CoglPipelineProgramState *
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program_state_new (int n_layers)
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{
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CoglPipelineProgramState *program_state;
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program_state = g_slice_new (CoglPipelineProgramState);
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program_state->ref_count = 1;
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program_state->program = 0;
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program_state->n_tex_coord_attribs = 0;
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program_state->unit_state = g_new (UnitState, n_layers);
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program_state->uniform_locations = NULL;
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program_state->attribute_locations = NULL;
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_cogl_matrix_entry_cache_init (&program_state->modelview_cache);
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_cogl_matrix_entry_cache_init (&program_state->projection_cache);
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return program_state;
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}
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static void
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destroy_program_state (void *user_data,
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void *instance)
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{
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CoglPipelineProgramState *program_state = user_data;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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/* If the program state was last used for this pipeline then clear
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it so that if same address gets used again for a new pipeline
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then we won't think it's the same pipeline and avoid updating the
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uniforms */
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if (program_state->last_used_for_pipeline == instance)
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program_state->last_used_for_pipeline = NULL;
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if (--program_state->ref_count == 0)
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{
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clear_attribute_cache (program_state);
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_cogl_matrix_entry_cache_destroy (&program_state->projection_cache);
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_cogl_matrix_entry_cache_destroy (&program_state->modelview_cache);
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if (program_state->program)
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GE( ctx, glDeleteProgram (program_state->program) );
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g_free (program_state->unit_state);
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if (program_state->uniform_locations)
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g_array_free (program_state->uniform_locations, TRUE);
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g_slice_free (CoglPipelineProgramState, program_state);
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}
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}
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static void
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set_program_state (CoglPipeline *pipeline,
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CoglPipelineProgramState *program_state)
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{
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_cogl_object_set_user_data (COGL_OBJECT (pipeline),
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&program_state_key,
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program_state,
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destroy_program_state);
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}
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static void
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dirty_program_state (CoglPipeline *pipeline)
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{
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cogl_object_set_user_data (COGL_OBJECT (pipeline),
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&program_state_key,
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NULL,
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NULL);
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}
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static void
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link_program (GLint gl_program)
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{
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GLint link_status;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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GE( ctx, glLinkProgram (gl_program) );
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GE( ctx, glGetProgramiv (gl_program, GL_LINK_STATUS, &link_status) );
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if (!link_status)
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{
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GLint log_length;
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GLsizei out_log_length;
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char *log;
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GE( ctx, glGetProgramiv (gl_program, GL_INFO_LOG_LENGTH, &log_length) );
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log = g_malloc (log_length);
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GE( ctx, glGetProgramInfoLog (gl_program, log_length,
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&out_log_length, log) );
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g_warning ("Failed to link GLSL program:\n%.*s\n",
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log_length, log);
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g_free (log);
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}
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}
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typedef struct
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{
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int unit;
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GLuint gl_program;
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CoglBool update_all;
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CoglPipelineProgramState *program_state;
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} UpdateUniformsState;
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static CoglBool
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get_uniform_cb (CoglPipeline *pipeline,
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int layer_index,
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void *user_data)
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{
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UpdateUniformsState *state = user_data;
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CoglPipelineProgramState *program_state = state->program_state;
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UnitState *unit_state = &program_state->unit_state[state->unit];
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GLint uniform_location;
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_COGL_GET_CONTEXT (ctx, FALSE);
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/* We can reuse the source buffer to create the uniform name because
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the program has now been linked */
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g_string_set_size (ctx->codegen_source_buffer, 0);
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g_string_append_printf (ctx->codegen_source_buffer,
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"cogl_sampler%i", layer_index);
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GE_RET( uniform_location,
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ctx, glGetUniformLocation (state->gl_program,
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ctx->codegen_source_buffer->str) );
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/* We can set the uniform immediately because the samplers are the
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unit index not the texture object number so it will never
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change. Unfortunately GL won't let us use a constant instead of a
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uniform */
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if (uniform_location != -1)
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GE( ctx, glUniform1i (uniform_location, state->unit) );
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g_string_set_size (ctx->codegen_source_buffer, 0);
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g_string_append_printf (ctx->codegen_source_buffer,
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"_cogl_layer_constant_%i", layer_index);
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GE_RET( uniform_location,
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ctx, glGetUniformLocation (state->gl_program,
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ctx->codegen_source_buffer->str) );
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unit_state->combine_constant_uniform = uniform_location;
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g_string_set_size (ctx->codegen_source_buffer, 0);
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g_string_append_printf (ctx->codegen_source_buffer,
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"cogl_texture_matrix[%i]", state->unit);
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GE_RET( uniform_location,
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ctx, glGetUniformLocation (state->gl_program,
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ctx->codegen_source_buffer->str) );
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unit_state->texture_matrix_uniform = uniform_location;
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state->unit++;
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return TRUE;
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}
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static CoglBool
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update_constants_cb (CoglPipeline *pipeline,
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int layer_index,
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void *user_data)
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{
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UpdateUniformsState *state = user_data;
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CoglPipelineProgramState *program_state = state->program_state;
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UnitState *unit_state = &program_state->unit_state[state->unit++];
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_COGL_GET_CONTEXT (ctx, FALSE);
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if (unit_state->combine_constant_uniform != -1 &&
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(state->update_all || unit_state->dirty_combine_constant))
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{
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float constant[4];
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_cogl_pipeline_get_layer_combine_constant (pipeline,
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layer_index,
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constant);
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GE (ctx, glUniform4fv (unit_state->combine_constant_uniform,
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1, constant));
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unit_state->dirty_combine_constant = FALSE;
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}
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if (unit_state->texture_matrix_uniform != -1 &&
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(state->update_all || unit_state->dirty_texture_matrix))
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{
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const CoglMatrix *matrix;
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const float *array;
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matrix = _cogl_pipeline_get_layer_matrix (pipeline, layer_index);
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array = cogl_matrix_get_array (matrix);
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GE (ctx, glUniformMatrix4fv (unit_state->texture_matrix_uniform,
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1, FALSE, array));
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unit_state->dirty_texture_matrix = FALSE;
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}
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return TRUE;
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}
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static void
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update_builtin_uniforms (CoglContext *context,
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CoglPipeline *pipeline,
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GLuint gl_program,
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CoglPipelineProgramState *program_state)
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{
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int i;
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if (program_state->dirty_builtin_uniforms == 0)
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return;
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for (i = 0; i < G_N_ELEMENTS (builtin_uniforms); i++)
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if ((context->private_feature_flags &
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builtin_uniforms[i].feature_replacement) == 0 &&
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(program_state->dirty_builtin_uniforms & (1 << i)) &&
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program_state->builtin_uniform_locations[i] != -1)
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builtin_uniforms[i].update_func (pipeline,
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program_state
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->builtin_uniform_locations[i],
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builtin_uniforms[i].getter_func);
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program_state->dirty_builtin_uniforms = 0;
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}
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|
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typedef struct
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{
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CoglPipelineProgramState *program_state;
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unsigned long *uniform_differences;
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int n_differences;
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CoglContext *ctx;
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const CoglBoxedValue *values;
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int value_index;
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} FlushUniformsClosure;
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|
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static CoglBool
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flush_uniform_cb (int uniform_num, void *user_data)
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{
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FlushUniformsClosure *data = user_data;
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|
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if (COGL_FLAGS_GET (data->uniform_differences, uniform_num))
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{
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GArray *uniform_locations;
|
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GLint uniform_location;
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if (data->program_state->uniform_locations == NULL)
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data->program_state->uniform_locations =
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g_array_new (FALSE, FALSE, sizeof (GLint));
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uniform_locations = data->program_state->uniform_locations;
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if (uniform_locations->len <= uniform_num)
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{
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unsigned int old_len = uniform_locations->len;
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g_array_set_size (uniform_locations, uniform_num + 1);
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while (old_len <= uniform_num)
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{
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g_array_index (uniform_locations, GLint, old_len) =
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UNIFORM_LOCATION_UNKNOWN;
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old_len++;
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}
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}
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|
uniform_location = g_array_index (uniform_locations, GLint, uniform_num);
|
|
|
|
if (uniform_location == UNIFORM_LOCATION_UNKNOWN)
|
|
{
|
|
const char *uniform_name =
|
|
g_ptr_array_index (data->ctx->uniform_names, uniform_num);
|
|
|
|
uniform_location =
|
|
data->ctx->glGetUniformLocation (data->program_state->program,
|
|
uniform_name);
|
|
g_array_index (uniform_locations, GLint, uniform_num) =
|
|
uniform_location;
|
|
}
|
|
|
|
if (uniform_location != -1)
|
|
_cogl_boxed_value_set_uniform (data->ctx,
|
|
uniform_location,
|
|
data->values + data->value_index);
|
|
|
|
data->n_differences--;
|
|
COGL_FLAGS_SET (data->uniform_differences, uniform_num, FALSE);
|
|
}
|
|
|
|
data->value_index++;
|
|
|
|
return data->n_differences > 0;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_progend_glsl_flush_uniforms (CoglPipeline *pipeline,
|
|
CoglPipelineProgramState *
|
|
program_state,
|
|
GLuint gl_program,
|
|
CoglBool program_changed)
|
|
{
|
|
CoglPipelineUniformsState *uniforms_state;
|
|
FlushUniformsClosure data;
|
|
int n_uniform_longs;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_UNIFORMS)
|
|
uniforms_state = &pipeline->big_state->uniforms_state;
|
|
else
|
|
uniforms_state = NULL;
|
|
|
|
data.program_state = program_state;
|
|
data.ctx = ctx;
|
|
|
|
n_uniform_longs = COGL_FLAGS_N_LONGS_FOR_SIZE (ctx->n_uniform_names);
|
|
|
|
data.uniform_differences = g_newa (unsigned long, n_uniform_longs);
|
|
|
|
/* Try to find a common ancestor for the values that were already
|
|
flushed on the pipeline that this program state was last used for
|
|
so we can avoid flushing those */
|
|
|
|
if (program_changed || program_state->last_used_for_pipeline == NULL)
|
|
{
|
|
if (program_changed)
|
|
{
|
|
/* The program has changed so all of the uniform locations
|
|
are invalid */
|
|
if (program_state->uniform_locations)
|
|
g_array_set_size (program_state->uniform_locations, 0);
|
|
}
|
|
|
|
/* We need to flush everything so mark all of the uniforms as
|
|
dirty */
|
|
memset (data.uniform_differences, 0xff,
|
|
n_uniform_longs * sizeof (unsigned long));
|
|
data.n_differences = G_MAXINT;
|
|
}
|
|
else if (program_state->last_used_for_pipeline)
|
|
{
|
|
int i;
|
|
|
|
memset (data.uniform_differences, 0,
|
|
n_uniform_longs * sizeof (unsigned long));
|
|
_cogl_pipeline_compare_uniform_differences
|
|
(data.uniform_differences,
|
|
program_state->last_used_for_pipeline,
|
|
pipeline);
|
|
|
|
/* We need to be sure to flush any uniforms that have changed
|
|
since the last flush */
|
|
if (uniforms_state)
|
|
_cogl_bitmask_set_flags (&uniforms_state->changed_mask,
|
|
data.uniform_differences);
|
|
|
|
/* Count the number of differences. This is so we can stop early
|
|
when we've flushed all of them */
|
|
data.n_differences = 0;
|
|
|
|
for (i = 0; i < n_uniform_longs; i++)
|
|
data.n_differences +=
|
|
_cogl_util_popcountl (data.uniform_differences[i]);
|
|
}
|
|
|
|
while (pipeline && data.n_differences > 0)
|
|
{
|
|
if (pipeline->differences & COGL_PIPELINE_STATE_UNIFORMS)
|
|
{
|
|
const CoglPipelineUniformsState *parent_uniforms_state =
|
|
&pipeline->big_state->uniforms_state;
|
|
|
|
data.values = parent_uniforms_state->override_values;
|
|
data.value_index = 0;
|
|
|
|
_cogl_bitmask_foreach (&parent_uniforms_state->override_mask,
|
|
flush_uniform_cb,
|
|
&data);
|
|
}
|
|
|
|
pipeline = _cogl_pipeline_get_parent (pipeline);
|
|
}
|
|
|
|
if (uniforms_state)
|
|
_cogl_bitmask_clear_all (&uniforms_state->changed_mask);
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_pipeline_progend_glsl_start (CoglPipeline *pipeline)
|
|
{
|
|
CoglHandle user_program;
|
|
|
|
_COGL_GET_CONTEXT (ctx, FALSE);
|
|
|
|
if (!cogl_has_feature (ctx, COGL_FEATURE_ID_GLSL))
|
|
return FALSE;
|
|
|
|
user_program = cogl_pipeline_get_user_program (pipeline);
|
|
if (user_program &&
|
|
_cogl_program_get_language (user_program) != COGL_SHADER_LANGUAGE_GLSL)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_progend_glsl_end (CoglPipeline *pipeline,
|
|
unsigned long pipelines_difference,
|
|
int n_tex_coord_attribs)
|
|
{
|
|
CoglPipelineProgramState *program_state;
|
|
GLuint gl_program;
|
|
CoglBool program_changed = FALSE;
|
|
UpdateUniformsState state;
|
|
CoglProgram *user_program;
|
|
CoglPipeline *template_pipeline = NULL;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
program_state = get_program_state (pipeline);
|
|
|
|
user_program = cogl_pipeline_get_user_program (pipeline);
|
|
|
|
if (program_state == NULL)
|
|
{
|
|
CoglPipeline *authority;
|
|
|
|
/* Get the authority for anything affecting program state. This
|
|
should include both fragment codegen state and vertex codegen
|
|
state */
|
|
authority = _cogl_pipeline_find_equivalent_parent
|
|
(pipeline,
|
|
(COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN |
|
|
_cogl_pipeline_get_state_for_fragment_codegen (ctx)) &
|
|
~COGL_PIPELINE_STATE_LAYERS,
|
|
_cogl_pipeline_get_layer_state_for_fragment_codegen (ctx) |
|
|
COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN);
|
|
|
|
program_state = get_program_state (authority);
|
|
|
|
if (program_state == NULL)
|
|
{
|
|
/* Check if there is already a similar cached pipeline whose
|
|
program state we can share */
|
|
if (G_LIKELY (!(COGL_DEBUG_ENABLED
|
|
(COGL_DEBUG_DISABLE_PROGRAM_CACHES))))
|
|
{
|
|
template_pipeline =
|
|
_cogl_pipeline_cache_get_combined_template (ctx->pipeline_cache,
|
|
authority);
|
|
|
|
program_state = get_program_state (template_pipeline);
|
|
}
|
|
|
|
if (program_state)
|
|
program_state->ref_count++;
|
|
else
|
|
program_state
|
|
= program_state_new (cogl_pipeline_get_n_layers (authority));
|
|
|
|
set_program_state (authority, program_state);
|
|
|
|
if (template_pipeline)
|
|
{
|
|
program_state->ref_count++;
|
|
set_program_state (template_pipeline, program_state);
|
|
}
|
|
}
|
|
|
|
if (authority != pipeline)
|
|
{
|
|
program_state->ref_count++;
|
|
set_program_state (pipeline, program_state);
|
|
}
|
|
}
|
|
|
|
/* If the program has changed since the last link then we do
|
|
* need to relink
|
|
*
|
|
* Also if the number of texture coordinate attributes in use has
|
|
* changed, then delete the program so we can prepend a new
|
|
* _cogl_tex_coord[] varying array declaration. */
|
|
if ((program_state->program && user_program &&
|
|
user_program->age != program_state->user_program_age) ||
|
|
n_tex_coord_attribs != program_state->n_tex_coord_attribs)
|
|
{
|
|
GE( ctx, glDeleteProgram (program_state->program) );
|
|
program_state->program = 0;
|
|
}
|
|
|
|
if (program_state->program == 0)
|
|
{
|
|
GLuint backend_shader;
|
|
GSList *l;
|
|
|
|
GE_RET( program_state->program, ctx, glCreateProgram () );
|
|
|
|
/* Attach all of the shader from the user program */
|
|
if (user_program)
|
|
{
|
|
for (l = user_program->attached_shaders; l; l = l->next)
|
|
{
|
|
CoglShader *shader = l->data;
|
|
|
|
_cogl_shader_compile_real (shader, n_tex_coord_attribs);
|
|
|
|
g_assert (shader->language == COGL_SHADER_LANGUAGE_GLSL);
|
|
|
|
GE( ctx, glAttachShader (program_state->program,
|
|
shader->gl_handle) );
|
|
}
|
|
|
|
program_state->user_program_age = user_program->age;
|
|
}
|
|
|
|
/* Attach any shaders from the GLSL backends */
|
|
if ((backend_shader = _cogl_pipeline_fragend_glsl_get_shader (pipeline)))
|
|
GE( ctx, glAttachShader (program_state->program, backend_shader) );
|
|
if ((backend_shader = _cogl_pipeline_vertend_glsl_get_shader (pipeline)))
|
|
GE( ctx, glAttachShader (program_state->program, backend_shader) );
|
|
|
|
link_program (program_state->program);
|
|
|
|
program_changed = TRUE;
|
|
|
|
program_state->n_tex_coord_attribs = n_tex_coord_attribs;
|
|
}
|
|
|
|
gl_program = program_state->program;
|
|
|
|
_cogl_use_fragment_program (gl_program, COGL_PIPELINE_PROGRAM_TYPE_GLSL);
|
|
_cogl_use_vertex_program (gl_program, COGL_PIPELINE_PROGRAM_TYPE_GLSL);
|
|
|
|
state.unit = 0;
|
|
state.gl_program = gl_program;
|
|
state.program_state = program_state;
|
|
|
|
if (program_changed)
|
|
{
|
|
cogl_pipeline_foreach_layer (pipeline,
|
|
get_uniform_cb,
|
|
&state);
|
|
clear_attribute_cache (program_state);
|
|
|
|
GE_RET (program_state->flip_uniform,
|
|
ctx, glGetUniformLocation (gl_program, "_cogl_flip_vector"));
|
|
program_state->flushed_flip_state = -1;
|
|
}
|
|
|
|
state.unit = 0;
|
|
state.update_all = (program_changed ||
|
|
program_state->last_used_for_pipeline != pipeline);
|
|
|
|
cogl_pipeline_foreach_layer (pipeline,
|
|
update_constants_cb,
|
|
&state);
|
|
|
|
if (program_changed)
|
|
{
|
|
int i;
|
|
|
|
clear_flushed_matrix_stacks (program_state);
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (builtin_uniforms); i++)
|
|
if ((ctx->private_feature_flags &
|
|
builtin_uniforms[i].feature_replacement) == 0)
|
|
GE_RET( program_state->builtin_uniform_locations[i], ctx,
|
|
glGetUniformLocation (gl_program,
|
|
builtin_uniforms[i].uniform_name) );
|
|
|
|
GE_RET( program_state->modelview_uniform, ctx,
|
|
glGetUniformLocation (gl_program,
|
|
"cogl_modelview_matrix") );
|
|
|
|
GE_RET( program_state->projection_uniform, ctx,
|
|
glGetUniformLocation (gl_program,
|
|
"cogl_projection_matrix") );
|
|
|
|
GE_RET( program_state->mvp_uniform, ctx,
|
|
glGetUniformLocation (gl_program,
|
|
"cogl_modelview_projection_matrix") );
|
|
}
|
|
|
|
if (program_changed ||
|
|
program_state->last_used_for_pipeline != pipeline)
|
|
program_state->dirty_builtin_uniforms = ~(unsigned long) 0;
|
|
|
|
update_builtin_uniforms (ctx, pipeline, gl_program, program_state);
|
|
|
|
_cogl_pipeline_progend_glsl_flush_uniforms (pipeline,
|
|
program_state,
|
|
gl_program,
|
|
program_changed);
|
|
|
|
if (user_program)
|
|
_cogl_program_flush_uniforms (user_program,
|
|
gl_program,
|
|
program_changed);
|
|
|
|
/* We need to track the last pipeline that the program was used with
|
|
* so know if we need to update all of the uniforms */
|
|
program_state->last_used_for_pipeline = pipeline;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_progend_glsl_pre_change_notify (CoglPipeline *pipeline,
|
|
CoglPipelineState change,
|
|
const CoglColor *new_color)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if ((change & _cogl_pipeline_get_state_for_fragment_codegen (ctx)))
|
|
dirty_program_state (pipeline);
|
|
else
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (builtin_uniforms); i++)
|
|
if ((ctx->private_feature_flags &
|
|
builtin_uniforms[i].feature_replacement) == 0 &&
|
|
(change & builtin_uniforms[i].change))
|
|
{
|
|
CoglPipelineProgramState *program_state
|
|
= get_program_state (pipeline);
|
|
if (program_state)
|
|
program_state->dirty_builtin_uniforms |= 1 << i;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* NB: layers are considered immutable once they have any dependants
|
|
* so although multiple pipelines can end up depending on a single
|
|
* static layer, we can guarantee that if a layer is being *changed*
|
|
* then it can only have one pipeline depending on it.
|
|
*
|
|
* XXX: Don't forget this is *pre* change, we can't read the new value
|
|
* yet!
|
|
*/
|
|
static void
|
|
_cogl_pipeline_progend_glsl_layer_pre_change_notify (
|
|
CoglPipeline *owner,
|
|
CoglPipelineLayer *layer,
|
|
CoglPipelineLayerState change)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if ((change & _cogl_pipeline_get_state_for_fragment_codegen (ctx)))
|
|
{
|
|
dirty_program_state (owner);
|
|
return;
|
|
}
|
|
|
|
if (change & COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT)
|
|
{
|
|
CoglPipelineProgramState *program_state = get_program_state (owner);
|
|
if (program_state)
|
|
{
|
|
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
|
|
program_state->unit_state[unit_index].dirty_combine_constant = TRUE;
|
|
}
|
|
}
|
|
|
|
if (change & COGL_PIPELINE_LAYER_STATE_USER_MATRIX)
|
|
{
|
|
CoglPipelineProgramState *program_state = get_program_state (owner);
|
|
if (program_state)
|
|
{
|
|
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
|
|
program_state->unit_state[unit_index].dirty_texture_matrix = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_progend_glsl_pre_paint (CoglPipeline *pipeline,
|
|
CoglFramebuffer *framebuffer)
|
|
{
|
|
CoglBool needs_flip;
|
|
CoglMatrixEntry *projection_entry;
|
|
CoglMatrixEntry *modelview_entry;
|
|
CoglPipelineProgramState *program_state;
|
|
CoglBool modelview_changed;
|
|
CoglBool projection_changed;
|
|
CoglBool need_modelview;
|
|
CoglBool need_projection;
|
|
CoglMatrix modelview, projection;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
program_state = get_program_state (pipeline);
|
|
|
|
projection_entry = ctx->current_projection_entry;
|
|
modelview_entry = ctx->current_modelview_entry;
|
|
|
|
/* An initial pipeline is flushed while creating the context. At
|
|
this point there are no matrices selected so we can't do
|
|
anything */
|
|
if (modelview_entry == NULL || projection_entry == NULL)
|
|
return;
|
|
|
|
needs_flip = cogl_is_offscreen (ctx->current_draw_buffer);
|
|
|
|
projection_changed =
|
|
_cogl_matrix_entry_cache_maybe_update (&program_state->projection_cache,
|
|
projection_entry,
|
|
(needs_flip &&
|
|
program_state->flip_uniform ==
|
|
-1));
|
|
|
|
modelview_changed =
|
|
_cogl_matrix_entry_cache_maybe_update (&program_state->modelview_cache,
|
|
modelview_entry,
|
|
/* never flip modelview */
|
|
FALSE);
|
|
|
|
if (modelview_changed || projection_changed)
|
|
{
|
|
if (program_state->mvp_uniform != -1)
|
|
need_modelview = need_projection = TRUE;
|
|
else
|
|
{
|
|
need_projection = (program_state->projection_uniform != -1 &&
|
|
projection_changed);
|
|
need_modelview = (program_state->modelview_uniform != -1 &&
|
|
modelview_changed);
|
|
}
|
|
|
|
if (need_modelview)
|
|
_cogl_matrix_entry_get (modelview_entry, &modelview);
|
|
if (need_projection)
|
|
{
|
|
if (needs_flip && program_state->flip_uniform == -1)
|
|
{
|
|
CoglMatrix tmp_matrix;
|
|
_cogl_matrix_entry_get (projection_entry, &tmp_matrix);
|
|
cogl_matrix_multiply (&projection,
|
|
&ctx->y_flip_matrix,
|
|
&tmp_matrix);
|
|
}
|
|
else
|
|
_cogl_matrix_entry_get (projection_entry, &projection);
|
|
}
|
|
|
|
if (projection_changed && program_state->projection_uniform != -1)
|
|
GE (ctx, glUniformMatrix4fv (program_state->projection_uniform,
|
|
1, /* count */
|
|
FALSE, /* transpose */
|
|
cogl_matrix_get_array (&projection)));
|
|
|
|
if (modelview_changed && program_state->modelview_uniform != -1)
|
|
GE (ctx, glUniformMatrix4fv (program_state->modelview_uniform,
|
|
1, /* count */
|
|
FALSE, /* transpose */
|
|
cogl_matrix_get_array (&modelview)));
|
|
|
|
if (program_state->mvp_uniform != -1)
|
|
{
|
|
/* The journal usually uses an identity matrix for the
|
|
modelview so we can optimise this common case by
|
|
avoiding the matrix multiplication */
|
|
if (_cogl_matrix_entry_has_identity_flag (modelview_entry))
|
|
{
|
|
GE (ctx,
|
|
glUniformMatrix4fv (program_state->mvp_uniform,
|
|
1, /* count */
|
|
FALSE, /* transpose */
|
|
cogl_matrix_get_array (&projection)));
|
|
}
|
|
else
|
|
{
|
|
CoglMatrix combined;
|
|
|
|
cogl_matrix_multiply (&combined,
|
|
&projection,
|
|
&modelview);
|
|
GE (ctx,
|
|
glUniformMatrix4fv (program_state->mvp_uniform,
|
|
1, /* count */
|
|
FALSE, /* transpose */
|
|
cogl_matrix_get_array (&combined)));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (program_state->flip_uniform != -1
|
|
&& program_state->flushed_flip_state != needs_flip)
|
|
{
|
|
static const float do_flip[4] = { 1.0f, -1.0f, 1.0f, 1.0f };
|
|
static const float dont_flip[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
|
|
GE( ctx, glUniform4fv (program_state->flip_uniform,
|
|
1, /* count */
|
|
needs_flip ? do_flip : dont_flip) );
|
|
program_state->flushed_flip_state = needs_flip;
|
|
}
|
|
}
|
|
|
|
static void
|
|
update_float_uniform (CoglPipeline *pipeline,
|
|
int uniform_location,
|
|
void *getter_func)
|
|
{
|
|
float (* float_getter_func) (CoglPipeline *) = getter_func;
|
|
float value;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
value = float_getter_func (pipeline);
|
|
GE( ctx, glUniform1f (uniform_location, value) );
|
|
}
|
|
|
|
const CoglPipelineProgend _cogl_pipeline_glsl_progend =
|
|
{
|
|
COGL_PIPELINE_VERTEND_GLSL,
|
|
COGL_PIPELINE_FRAGEND_GLSL,
|
|
_cogl_pipeline_progend_glsl_start,
|
|
_cogl_pipeline_progend_glsl_end,
|
|
_cogl_pipeline_progend_glsl_pre_change_notify,
|
|
_cogl_pipeline_progend_glsl_layer_pre_change_notify,
|
|
_cogl_pipeline_progend_glsl_pre_paint
|
|
};
|
|
|
|
#endif /* COGL_PIPELINE_PROGEND_GLSL */
|