03dbf67ca4
There are several places where we need to compare the texture state of a pipeline and sometimes we need to take into consideration if the underlying texture has changed but other times we may only care to know if the texture target has changed. For example the fragends typically generate programs that they want to share with all pipelines with equivalent fragment processing state, and in this case when comparing pipelines we only care about the texture targets since changes to the underlying texture won't affect the programs generated. Prior to this we had tried to handle this by passing around some special flags to various functions that evaluate pipeline state to say when we do/don't care about the texture data, but this wasn't working in all cases and was more awkward to manage than the new approach. Now we simply have two state bits: COGL_PIPELINE_LAYER_STATE_TEXTURE_TARGET and COGL_PIPELINE_LAYER_STATE_TEXTURE_DATA and CoglPipelineLayer has an additional target member. Since all the appropriate code takes masks of these state bits to determine what to evaluate we don't need any extra magic flags.
930 lines
29 KiB
C
930 lines
29 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 "cogl-pipeline-private.h"
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#include "cogl-pipeline-opengl-private.h"
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#ifdef COGL_PIPELINE_PROGEND_GLSL
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#include "cogl.h"
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#include "cogl-internal.h"
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#include "cogl-context.h"
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#include "cogl-handle.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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#ifndef HAVE_COGL_GLES2
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#define glCreateProgram ctx->drv.pf_glCreateProgram
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#define glAttachShader ctx->drv.pf_glAttachShader
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#define glUseProgram ctx->drv.pf_glUseProgram
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#define glLinkProgram ctx->drv.pf_glLinkProgram
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#define glDeleteProgram ctx->drv.pf_glDeleteProgram
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#define glGetProgramInfoLog ctx->drv.pf_glGetProgramInfoLog
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#define glGetProgramiv ctx->drv.pf_glGetProgramiv
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#define glGetUniformLocation ctx->drv.pf_glGetUniformLocation
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#define glUniform1i ctx->drv.pf_glUniform1i
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#define glUniform1f ctx->drv.pf_glUniform1f
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#define glUniform4fv ctx->drv.pf_glUniform4fv
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#endif /* HAVE_COGL_GLES2 */
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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 increases. */
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int n_tex_coord_attribs;
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#ifdef HAVE_COGL_GLES2
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/* Under GLES2 the alpha test is implemented in the shader. We need
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a uniform for the reference value */
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gboolean dirty_alpha_test_reference;
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GLint alpha_test_reference_uniform;
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gboolean dirty_point_size;
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GLint point_size_uniform;
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/* Under GLES2 we can't use the builtin functions to set attribute
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pointers such as the vertex position. Instead the vertex
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attribute code needs to query the attribute numbers from the
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progend backend */
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int position_attribute_location;
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int color_attribute_location;
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int normal_attribute_location;
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int tex_coord0_attribute_location;
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/* We only allocate this array if more than one tex coord attribute
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is requested because most pipelines will only use one layer */
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GArray *tex_coord_attribute_locations;
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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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CoglMatrixStack *flushed_modelview_stack;
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unsigned int flushed_modelview_stack_age;
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gboolean flushed_modelview_is_identity;
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CoglMatrixStack *flushed_projection_stack;
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unsigned int flushed_projection_stack_age;
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#endif
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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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UnitState *unit_state;
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} CoglPipelineProgendPrivate;
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static CoglUserDataKey glsl_priv_key;
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static CoglPipelineProgendPrivate *
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get_glsl_priv (CoglPipeline *pipeline)
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{
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return cogl_object_get_user_data (COGL_OBJECT (pipeline), &glsl_priv_key);
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}
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#ifdef HAVE_COGL_GLES2
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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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int
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_cogl_pipeline_progend_glsl_get_position_attribute (CoglPipeline *pipeline)
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{
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CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
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g_return_val_if_fail (priv != NULL, -1);
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g_return_val_if_fail (priv->program != 0, -1);
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if (priv->position_attribute_location == ATTRIBUTE_LOCATION_UNKNOWN)
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GE_RET( priv->position_attribute_location,
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glGetAttribLocation (priv->program, "cogl_position_in") );
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return priv->position_attribute_location;
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}
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int
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_cogl_pipeline_progend_glsl_get_color_attribute (CoglPipeline *pipeline)
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{
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CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
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g_return_val_if_fail (priv != NULL, -1);
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g_return_val_if_fail (priv->program != 0, -1);
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if (priv->color_attribute_location == ATTRIBUTE_LOCATION_UNKNOWN)
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GE_RET( priv->color_attribute_location,
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glGetAttribLocation (priv->program, "cogl_color_in") );
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return priv->color_attribute_location;
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}
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int
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_cogl_pipeline_progend_glsl_get_normal_attribute (CoglPipeline *pipeline)
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{
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CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
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g_return_val_if_fail (priv != NULL, -1);
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g_return_val_if_fail (priv->program != 0, -1);
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if (priv->normal_attribute_location == ATTRIBUTE_LOCATION_UNKNOWN)
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GE_RET( priv->normal_attribute_location,
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glGetAttribLocation (priv->program, "cogl_normal_in") );
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return priv->normal_attribute_location;
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}
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int
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_cogl_pipeline_progend_glsl_get_tex_coord_attribute (CoglPipeline *pipeline,
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int unit)
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{
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CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
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g_return_val_if_fail (priv != NULL, -1);
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g_return_val_if_fail (priv->program != 0, -1);
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if (unit == 0)
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{
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if (priv->tex_coord0_attribute_location == ATTRIBUTE_LOCATION_UNKNOWN)
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GE_RET( priv->tex_coord0_attribute_location,
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glGetAttribLocation (priv->program, "cogl_tex_coord0_in") );
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return priv->tex_coord0_attribute_location;
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}
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else
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{
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char *name = g_strdup_printf ("cogl_tex_coord%i_in", unit);
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int *locations;
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if (priv->tex_coord_attribute_locations == NULL)
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priv->tex_coord_attribute_locations = g_array_new (FALSE, FALSE,
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sizeof (int));
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if (priv->tex_coord_attribute_locations->len <= unit - 1)
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{
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int i = priv->tex_coord_attribute_locations->len;
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g_array_set_size (priv->tex_coord_attribute_locations, unit);
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for (; i < unit; i++)
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g_array_index (priv->tex_coord_attribute_locations, int, i) =
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ATTRIBUTE_LOCATION_UNKNOWN;
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}
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locations = &g_array_index (priv->tex_coord_attribute_locations, int, 0);
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if (locations[unit - 1] == ATTRIBUTE_LOCATION_UNKNOWN)
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GE_RET( locations[unit - 1],
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glGetAttribLocation (priv->program, name) );
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g_free (name);
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return locations[unit - 1];
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}
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}
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static void
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clear_attribute_cache (CoglPipelineProgendPrivate *priv)
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{
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priv->position_attribute_location = ATTRIBUTE_LOCATION_UNKNOWN;
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priv->color_attribute_location = ATTRIBUTE_LOCATION_UNKNOWN;
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priv->normal_attribute_location = ATTRIBUTE_LOCATION_UNKNOWN;
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priv->tex_coord0_attribute_location = ATTRIBUTE_LOCATION_UNKNOWN;
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if (priv->tex_coord_attribute_locations)
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{
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g_array_free (priv->tex_coord_attribute_locations, TRUE);
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priv->tex_coord_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 (CoglPipelineProgendPrivate *priv)
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{
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if (priv->flushed_modelview_stack)
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{
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cogl_object_unref (priv->flushed_modelview_stack);
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priv->flushed_modelview_stack = NULL;
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}
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if (priv->flushed_projection_stack)
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{
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cogl_object_unref (priv->flushed_projection_stack);
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priv->flushed_projection_stack = NULL;
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}
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priv->flushed_modelview_is_identity = FALSE;
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}
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#endif /* HAVE_COGL_GLES2 */
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static void
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destroy_glsl_priv (void *user_data)
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{
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CoglPipelineProgendPrivate *priv = user_data;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (--priv->ref_count == 0)
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{
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#ifdef HAVE_COGL_GLES2
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clear_attribute_cache (priv);
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clear_flushed_matrix_stacks (priv);
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#endif
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if (priv->program)
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GE( glDeleteProgram (priv->program) );
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g_free (priv->unit_state);
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g_slice_free (CoglPipelineProgendPrivate, priv);
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}
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}
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static void
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set_glsl_priv (CoglPipeline *pipeline, CoglPipelineProgendPrivate *priv)
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{
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cogl_object_set_user_data (COGL_OBJECT (pipeline),
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&glsl_priv_key,
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priv,
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destroy_glsl_priv);
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}
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static void
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dirty_glsl_program_state (CoglPipeline *pipeline)
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{
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cogl_object_set_user_data (COGL_OBJECT (pipeline),
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&glsl_priv_key,
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NULL,
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destroy_glsl_priv);
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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( glLinkProgram (gl_program) );
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GE( 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( glGetProgramiv (gl_program, GL_INFO_LOG_LENGTH, &log_length) );
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log = g_malloc (log_length);
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GE( 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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gboolean update_all;
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CoglPipelineProgendPrivate *priv;
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} UpdateUniformsState;
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static gboolean
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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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CoglPipelineProgendPrivate *priv = state->priv;
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UnitState *unit_state = &priv->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", state->unit);
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GE_RET( uniform_location,
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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( 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", state->unit);
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GE_RET( uniform_location,
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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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#ifdef HAVE_COGL_GLES2
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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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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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#endif
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state->unit++;
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return TRUE;
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}
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static gboolean
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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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CoglPipelineProgendPrivate *priv = state->priv;
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UnitState *unit_state = &priv->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 (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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#ifdef HAVE_COGL_GLES2
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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 (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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#endif /* HAVE_COGL_GLES2 */
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return TRUE;
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}
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#ifdef HAVE_COGL_GLES2
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static void
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update_alpha_test_reference (CoglPipeline *pipeline,
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GLuint gl_program,
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CoglPipelineProgendPrivate *priv)
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{
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float alpha_reference;
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if (priv->dirty_alpha_test_reference &&
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priv->alpha_test_reference_uniform != -1)
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{
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alpha_reference = cogl_pipeline_get_alpha_test_reference (pipeline);
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GE( glUniform1f (priv->alpha_test_reference_uniform,
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alpha_reference) );
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priv->dirty_alpha_test_reference = FALSE;
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}
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}
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static void
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update_point_size (CoglPipeline *pipeline,
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GLuint gl_program,
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CoglPipelineProgendPrivate *priv)
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{
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if (priv->dirty_point_size && priv->point_size_uniform != -1)
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{
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float point_size = cogl_pipeline_get_point_size (pipeline);
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GE( glUniform1f (priv->point_size_uniform, point_size) );
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priv->dirty_point_size = FALSE;
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}
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}
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#endif /* HAVE_COGL_GLES2 */
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static void
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_cogl_pipeline_progend_glsl_end (CoglPipeline *pipeline,
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unsigned long pipelines_difference,
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int n_tex_coord_attribs)
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{
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CoglPipelineProgendPrivate *priv;
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GLuint gl_program;
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gboolean program_changed = FALSE;
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UpdateUniformsState state;
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CoglProgram *user_program;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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/* If neither of the glsl fragend or vertends are used then we don't
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need to do anything */
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if (pipeline->fragend != COGL_PIPELINE_FRAGEND_GLSL &&
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pipeline->vertend != COGL_PIPELINE_VERTEND_GLSL)
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return;
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|
priv = get_glsl_priv (pipeline);
|
|
|
|
user_program = cogl_pipeline_get_user_program (pipeline);
|
|
|
|
if (priv == 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_STATE_AFFECTS_FRAGMENT_CODEGEN) &
|
|
~COGL_PIPELINE_STATE_LAYERS,
|
|
COGL_PIPELINE_LAYER_STATE_AFFECTS_FRAGMENT_CODEGEN |
|
|
COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN);
|
|
|
|
priv = get_glsl_priv (authority);
|
|
|
|
if (priv == NULL)
|
|
{
|
|
priv = g_slice_new (CoglPipelineProgendPrivate);
|
|
priv->ref_count = 1;
|
|
priv->program = 0;
|
|
priv->n_tex_coord_attribs = 0;
|
|
priv->unit_state = g_new (UnitState,
|
|
cogl_pipeline_get_n_layers (pipeline));
|
|
#ifdef HAVE_COGL_GLES2
|
|
priv->tex_coord_attribute_locations = NULL;
|
|
priv->flushed_modelview_stack = NULL;
|
|
priv->flushed_modelview_is_identity = FALSE;
|
|
priv->flushed_projection_stack = NULL;
|
|
#endif
|
|
set_glsl_priv (authority, priv);
|
|
}
|
|
|
|
if (authority != pipeline)
|
|
{
|
|
priv->ref_count++;
|
|
set_glsl_priv (pipeline, priv);
|
|
}
|
|
}
|
|
|
|
/* 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
|
|
* increased, then delete the program so we can prepend a new
|
|
* _cogl_tex_coord[] varying array declaration. */
|
|
if (priv->program && user_program &&
|
|
(user_program->age != priv->user_program_age ||
|
|
n_tex_coord_attribs > priv->n_tex_coord_attribs))
|
|
{
|
|
GE( glDeleteProgram (priv->program) );
|
|
priv->program = 0;
|
|
}
|
|
|
|
if (priv->program == 0)
|
|
{
|
|
GLuint backend_shader;
|
|
GSList *l;
|
|
|
|
GE_RET( priv->program, glCreateProgram () );
|
|
|
|
/* Attach all of the shader from the user program */
|
|
if (user_program)
|
|
{
|
|
if (priv->n_tex_coord_attribs > n_tex_coord_attribs)
|
|
n_tex_coord_attribs = priv->n_tex_coord_attribs;
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
/* Find the largest count of texture coordinate attributes
|
|
* associated with each of the shaders so we can ensure a consistent
|
|
* _cogl_tex_coord[] array declaration across all of the shaders.*/
|
|
if (user_program)
|
|
for (l = user_program->attached_shaders; l; l = l->next)
|
|
{
|
|
CoglShader *shader = l->data;
|
|
n_tex_coord_attribs = MAX (shader->n_tex_coord_attribs,
|
|
n_tex_coord_attribs);
|
|
}
|
|
#endif
|
|
|
|
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( glAttachShader (priv->program,
|
|
shader->gl_handle) );
|
|
}
|
|
|
|
priv->user_program_age = user_program->age;
|
|
}
|
|
|
|
/* Attach any shaders from the GLSL backends */
|
|
if (pipeline->fragend == COGL_PIPELINE_FRAGEND_GLSL &&
|
|
(backend_shader = _cogl_pipeline_fragend_glsl_get_shader (pipeline)))
|
|
GE( glAttachShader (priv->program, backend_shader) );
|
|
if (pipeline->vertend == COGL_PIPELINE_VERTEND_GLSL &&
|
|
(backend_shader = _cogl_pipeline_vertend_glsl_get_shader (pipeline)))
|
|
GE( glAttachShader (priv->program, backend_shader) );
|
|
|
|
link_program (priv->program);
|
|
|
|
program_changed = TRUE;
|
|
|
|
priv->n_tex_coord_attribs = n_tex_coord_attribs;
|
|
}
|
|
|
|
gl_program = priv->program;
|
|
|
|
if (pipeline->fragend == COGL_PIPELINE_FRAGEND_GLSL)
|
|
_cogl_use_fragment_program (gl_program, COGL_PIPELINE_PROGRAM_TYPE_GLSL);
|
|
if (pipeline->vertend == COGL_PIPELINE_VERTEND_GLSL)
|
|
_cogl_use_vertex_program (gl_program, COGL_PIPELINE_PROGRAM_TYPE_GLSL);
|
|
|
|
state.unit = 0;
|
|
state.gl_program = gl_program;
|
|
state.priv = priv;
|
|
|
|
if (program_changed)
|
|
cogl_pipeline_foreach_layer (pipeline,
|
|
get_uniform_cb,
|
|
&state);
|
|
|
|
state.unit = 0;
|
|
state.update_all = (program_changed ||
|
|
priv->last_used_for_pipeline != pipeline);
|
|
|
|
cogl_pipeline_foreach_layer (pipeline,
|
|
update_constants_cb,
|
|
&state);
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
if (program_changed)
|
|
{
|
|
clear_attribute_cache (priv);
|
|
clear_flushed_matrix_stacks (priv);
|
|
|
|
GE_RET( priv->alpha_test_reference_uniform,
|
|
glGetUniformLocation (gl_program,
|
|
"_cogl_alpha_test_ref") );
|
|
|
|
GE_RET( priv->modelview_uniform,
|
|
glGetUniformLocation (gl_program,
|
|
"cogl_modelview_matrix") );
|
|
|
|
GE_RET( priv->projection_uniform,
|
|
glGetUniformLocation (gl_program,
|
|
"cogl_projection_matrix") );
|
|
|
|
GE_RET( priv->mvp_uniform,
|
|
glGetUniformLocation (gl_program,
|
|
"cogl_modelview_projection_matrix") );
|
|
|
|
GE_RET( priv->point_size_uniform,
|
|
glGetUniformLocation (gl_program,
|
|
"cogl_point_size_in") );
|
|
}
|
|
if (program_changed ||
|
|
priv->last_used_for_pipeline != pipeline)
|
|
{
|
|
priv->dirty_alpha_test_reference = TRUE;
|
|
priv->dirty_point_size = TRUE;
|
|
}
|
|
|
|
update_alpha_test_reference (pipeline, gl_program, priv);
|
|
update_point_size (pipeline, gl_program, priv);
|
|
#endif
|
|
|
|
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 */
|
|
priv->last_used_for_pipeline = pipeline;
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_progend_glsl_pre_change_notify (CoglPipeline *pipeline,
|
|
CoglPipelineState change,
|
|
const CoglColor *new_color)
|
|
{
|
|
if ((change & COGL_PIPELINE_STATE_AFFECTS_FRAGMENT_CODEGEN))
|
|
dirty_glsl_program_state (pipeline);
|
|
#ifdef HAVE_COGL_GLES2
|
|
else if ((change & COGL_PIPELINE_STATE_ALPHA_FUNC_REFERENCE))
|
|
{
|
|
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
|
|
if (priv)
|
|
priv->dirty_alpha_test_reference = TRUE;
|
|
}
|
|
else if ((change & COGL_PIPELINE_STATE_POINT_SIZE))
|
|
{
|
|
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
|
|
if (priv)
|
|
priv->dirty_point_size = TRUE;
|
|
}
|
|
#endif /* HAVE_COGL_GLES2 */
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
if ((change & COGL_PIPELINE_LAYER_STATE_AFFECTS_FRAGMENT_CODEGEN))
|
|
{
|
|
dirty_glsl_program_state (owner);
|
|
return;
|
|
}
|
|
|
|
if (change & COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT)
|
|
{
|
|
CoglPipelineProgendPrivate *priv = get_glsl_priv (owner);
|
|
if (priv)
|
|
{
|
|
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
|
|
priv->unit_state[unit_index].dirty_combine_constant = TRUE;
|
|
}
|
|
}
|
|
|
|
if (change & COGL_PIPELINE_LAYER_STATE_USER_MATRIX)
|
|
{
|
|
CoglPipelineProgendPrivate *priv = get_glsl_priv (owner);
|
|
if (priv)
|
|
{
|
|
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
|
|
priv->unit_state[unit_index].dirty_texture_matrix = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
|
|
static void
|
|
flush_modelview_cb (gboolean is_identity,
|
|
const CoglMatrix *matrix,
|
|
void *user_data)
|
|
{
|
|
CoglPipelineProgendPrivate *priv = user_data;
|
|
|
|
GE( glUniformMatrix4fv (priv->modelview_uniform, 1, FALSE,
|
|
cogl_matrix_get_array (matrix)) );
|
|
}
|
|
|
|
static void
|
|
flush_projection_cb (gboolean is_identity,
|
|
const CoglMatrix *matrix,
|
|
void *user_data)
|
|
{
|
|
CoglPipelineProgendPrivate *priv = user_data;
|
|
|
|
GE( glUniformMatrix4fv (priv->projection_uniform, 1, FALSE,
|
|
cogl_matrix_get_array (matrix)) );
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
CoglPipelineProgendPrivate *priv;
|
|
const CoglMatrix *projection_matrix;
|
|
} FlushCombinedData;
|
|
|
|
static void
|
|
flush_combined_step_two_cb (gboolean is_identity,
|
|
const CoglMatrix *matrix,
|
|
void *user_data)
|
|
{
|
|
FlushCombinedData *data = user_data;
|
|
CoglMatrix mvp_matrix;
|
|
|
|
/* If the modelview is the identity then we can bypass the matrix
|
|
multiplication */
|
|
if (is_identity)
|
|
GE( glUniformMatrix4fv (data->priv->mvp_uniform, 1, FALSE,
|
|
cogl_matrix_get_array (data->projection_matrix)) );
|
|
else
|
|
{
|
|
cogl_matrix_multiply (&mvp_matrix,
|
|
data->projection_matrix,
|
|
matrix);
|
|
|
|
GE( glUniformMatrix4fv (data->priv->mvp_uniform, 1, FALSE,
|
|
cogl_matrix_get_array (&mvp_matrix)) );
|
|
}
|
|
}
|
|
|
|
static void
|
|
flush_combined_step_one_cb (gboolean is_identity,
|
|
const CoglMatrix *matrix,
|
|
void *user_data)
|
|
{
|
|
FlushCombinedData data;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
data.priv = user_data;
|
|
data.projection_matrix = matrix;
|
|
|
|
_cogl_matrix_stack_prepare_for_flush (ctx->flushed_modelview_stack,
|
|
COGL_MATRIX_MODELVIEW,
|
|
flush_combined_step_two_cb,
|
|
&data);
|
|
}
|
|
|
|
static void
|
|
_cogl_pipeline_progend_glsl_pre_paint (CoglPipeline *pipeline)
|
|
{
|
|
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
|
|
gboolean modelview_changed;
|
|
gboolean projection_changed;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
/* We only need to update the matrices if we're using the the GLSL
|
|
vertend, but this is a requirement on GLES2 anyway */
|
|
g_return_if_fail (pipeline->vertend == COGL_PIPELINE_VERTEND_GLSL);
|
|
|
|
priv = get_glsl_priv (pipeline);
|
|
|
|
/* An initial pipeline is flushed while creating the context. At
|
|
this point there are no matrices flushed so we can't do
|
|
anything */
|
|
if (ctx->flushed_modelview_stack == NULL ||
|
|
ctx->flushed_projection_stack == NULL)
|
|
return;
|
|
|
|
/* When flushing from the journal the modelview matrix is usually
|
|
the identity matrix so it makes sense to optimise this case by
|
|
specifically checking whether we already have the identity matrix
|
|
which will catch a lot of common cases of redundant flushing */
|
|
if (priv->flushed_modelview_is_identity &&
|
|
_cogl_matrix_stack_has_identity_flag (ctx->flushed_modelview_stack))
|
|
modelview_changed = FALSE;
|
|
else
|
|
modelview_changed =
|
|
priv->flushed_modelview_stack != ctx->flushed_modelview_stack ||
|
|
priv->flushed_modelview_stack_age !=
|
|
_cogl_matrix_stack_get_age (priv->flushed_modelview_stack);
|
|
|
|
projection_changed =
|
|
priv->flushed_projection_stack != ctx->flushed_projection_stack ||
|
|
priv->flushed_projection_stack_age !=
|
|
_cogl_matrix_stack_get_age (priv->flushed_projection_stack);
|
|
|
|
if (modelview_changed)
|
|
{
|
|
cogl_object_ref (ctx->flushed_modelview_stack);
|
|
if (priv->flushed_modelview_stack)
|
|
cogl_object_unref (priv->flushed_modelview_stack);
|
|
priv->flushed_modelview_stack = ctx->flushed_modelview_stack;
|
|
priv->flushed_modelview_stack_age =
|
|
_cogl_matrix_stack_get_age (ctx->flushed_modelview_stack);
|
|
priv->flushed_modelview_is_identity =
|
|
_cogl_matrix_stack_has_identity_flag (ctx->flushed_modelview_stack);
|
|
|
|
if (priv->modelview_uniform != -1)
|
|
_cogl_matrix_stack_prepare_for_flush (priv->flushed_modelview_stack,
|
|
COGL_MATRIX_MODELVIEW,
|
|
flush_modelview_cb,
|
|
priv);
|
|
}
|
|
|
|
if (projection_changed)
|
|
{
|
|
cogl_object_ref (ctx->flushed_projection_stack);
|
|
if (priv->flushed_projection_stack)
|
|
cogl_object_unref (priv->flushed_projection_stack);
|
|
priv->flushed_projection_stack = ctx->flushed_projection_stack;
|
|
priv->flushed_projection_stack_age =
|
|
_cogl_matrix_stack_get_age (ctx->flushed_projection_stack);
|
|
|
|
if (priv->projection_uniform != -1)
|
|
_cogl_matrix_stack_prepare_for_flush (priv->flushed_projection_stack,
|
|
COGL_MATRIX_PROJECTION,
|
|
flush_projection_cb,
|
|
priv);
|
|
}
|
|
|
|
if (priv->mvp_uniform != -1 && (modelview_changed || projection_changed))
|
|
_cogl_matrix_stack_prepare_for_flush (ctx->flushed_projection_stack,
|
|
COGL_MATRIX_PROJECTION,
|
|
flush_combined_step_one_cb,
|
|
priv);
|
|
}
|
|
|
|
#endif
|
|
|
|
const CoglPipelineProgend _cogl_pipeline_glsl_progend =
|
|
{
|
|
_cogl_pipeline_progend_glsl_end,
|
|
_cogl_pipeline_progend_glsl_pre_change_notify,
|
|
_cogl_pipeline_progend_glsl_layer_pre_change_notify,
|
|
#ifdef HAVE_COGL_GLES2
|
|
_cogl_pipeline_progend_glsl_pre_paint
|
|
#else
|
|
NULL
|
|
#endif
|
|
};
|
|
|
|
#endif /* COGL_PIPELINE_PROGEND_GLSL */
|
|
|