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185630085c
This option to GCC makes it give a warning whenever a global function is defined without a declaration. This should catch cases were we've defined a function but forgot to put it in a header. In that case it is either only used within one file so we should make it static or we should declare it in a header. The following changes where made to fix problems: • Some functions were made static • cogl-path.h (the one containing the 1.0 API) was split into two files, one defining the functions and one defining the enums so that cogl-path.c can include the enum and function declarations from the 2.0 API as well as the function declarations from the 1.0 API. • cogl2-clip-state has been removed. This only had one experimental function called cogl_clip_push_from_path but as this is unstable we might as well remove it favour of the equivalent cogl_framebuffer_* API. • The GLX, SDL and WGL winsys's now have a private header to define their get_vtable function instead of directly declaring in the C file where it is called. • All places that were calling COGL_OBJECT_DEFINE need to have the cogl_is_whatever function declared so these have been added either as a public function or in a private header. • Some files that were not including the header containing their function declarations have been fixed to do so. • Any unused error quark functions have been removed. If we later want them we should add them back one by one and add a declaration for them in a header. • _cogl_is_framebuffer has been renamed to cogl_is_framebuffer and made a public function with a declaration in cogl-framebuffer.h • Similarly for CoglOnscreen. • cogl_vdraw_indexed_attributes is called cogl_framebuffer_vdraw_indexed_attributes in the header. The definition has been changed to match the header. • cogl_index_buffer_allocate has been removed. This had no declaration and I'm not sure what it's supposed to do. • CoglJournal has been changed to use the internal CoglObject macro so that it won't define an exported cogl_is_journal symbol. • The _cogl_blah_pointer_from_handle functions have been removed. CoglHandle isn't used much anymore anyway and in the few places where it is used I think it's safe to just use the implicit cast from void* to the right type. • The test-utils.h header for the conformance tests explicitly disables the -Wmissing-declaration option using a pragma because all of the tests declare their main function without a header. Any mistakes relating to missing declarations aren't really important for the tests. • cogl_quaternion_init_from_quaternion and init_from_matrix have been given declarations in cogl-quaternion.h Reviewed-by: Robert Bragg <robert@linux.intel.com>
1108 lines
36 KiB
C
1108 lines
36 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-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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#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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#ifdef HAVE_COGL_GLES2
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/* These are used to generalise updating some uniforms that are
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required when building for GLES2 */
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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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} 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_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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};
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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 changes. */
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int n_tex_coord_attribs;
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#ifdef HAVE_COGL_GLES2
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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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CoglMatrixStackCache projection_cache;
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CoglMatrixStackCache modelview_cache;
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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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/* 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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#ifdef HAVE_COGL_GLES2
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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_stack_destroy_cache (&program_state->projection_cache);
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_cogl_matrix_stack_init_cache (&program_state->projection_cache);
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_cogl_matrix_stack_destroy_cache (&program_state->modelview_cache);
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_cogl_matrix_stack_init_cache (&program_state->modelview_cache);
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}
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#endif /* HAVE_COGL_GLES2 */
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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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#ifdef HAVE_COGL_GLES2
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_cogl_matrix_stack_init_cache (&program_state->modelview_cache);
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_cogl_matrix_stack_init_cache (&program_state->projection_cache);
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#endif
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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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#ifdef HAVE_COGL_GLES2
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if (ctx->driver == COGL_DRIVER_GLES2)
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{
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_cogl_matrix_stack_destroy_cache (&program_state->projection_cache);
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_cogl_matrix_stack_destroy_cache (&program_state->modelview_cache);
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}
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#endif
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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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gboolean update_all;
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CoglPipelineProgramState *program_state;
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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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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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#ifdef HAVE_COGL_GLES2
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if (ctx->driver == COGL_DRIVER_GLES2)
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{
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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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}
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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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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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#ifdef HAVE_COGL_GLES2
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if (ctx->driver == COGL_DRIVER_GLES2 &&
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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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#endif /* HAVE_COGL_GLES2 */
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return TRUE;
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}
|
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|
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#ifdef HAVE_COGL_GLES2
|
|
|
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static void
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update_builtin_uniforms (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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|
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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 ((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,
|
|
program_state
|
|
->builtin_uniform_locations[i],
|
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builtin_uniforms[i].getter_func);
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|
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program_state->dirty_builtin_uniforms = 0;
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}
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#endif /* HAVE_COGL_GLES2 */
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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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static gboolean
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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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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);
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if (uniform_location == UNIFORM_LOCATION_UNKNOWN)
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{
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const char *uniform_name =
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g_ptr_array_index (data->ctx->uniform_names, uniform_num);
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uniform_location =
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data->ctx->glGetUniformLocation (data->program_state->program,
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uniform_name);
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g_array_index (uniform_locations, GLint, uniform_num) =
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uniform_location;
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}
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if (uniform_location != -1)
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_cogl_boxed_value_set_uniform (data->ctx,
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uniform_location,
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data->values + data->value_index);
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data->n_differences--;
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COGL_FLAGS_SET (data->uniform_differences, uniform_num, FALSE);
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}
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data->value_index++;
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return data->n_differences > 0;
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}
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static void
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_cogl_pipeline_progend_glsl_flush_uniforms (CoglPipeline *pipeline,
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CoglPipelineProgramState *
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program_state,
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GLuint gl_program,
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gboolean program_changed)
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{
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CoglPipelineUniformsState *uniforms_state;
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FlushUniformsClosure data;
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int n_uniform_longs;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (pipeline->differences & COGL_PIPELINE_STATE_UNIFORMS)
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uniforms_state = &pipeline->big_state->uniforms_state;
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else
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uniforms_state = NULL;
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data.program_state = program_state;
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data.ctx = ctx;
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n_uniform_longs = COGL_FLAGS_N_LONGS_FOR_SIZE (ctx->n_uniform_names);
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data.uniform_differences = g_newa (unsigned long, n_uniform_longs);
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/* Try to find a common ancestor for the values that were already
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flushed on the pipeline that this program state was last used for
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so we can avoid flushing those */
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if (program_changed || program_state->last_used_for_pipeline == NULL)
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{
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if (program_changed)
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{
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/* The program has changed so all of the uniform locations
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are invalid */
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if (program_state->uniform_locations)
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g_array_set_size (program_state->uniform_locations, 0);
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}
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/* We need to flush everything so mark all of the uniforms as
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dirty */
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memset (data.uniform_differences, 0xff,
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n_uniform_longs * sizeof (unsigned long));
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data.n_differences = G_MAXINT;
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}
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else if (program_state->last_used_for_pipeline)
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{
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int i;
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memset (data.uniform_differences, 0,
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n_uniform_longs * sizeof (unsigned long));
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_cogl_pipeline_compare_uniform_differences
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(data.uniform_differences,
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program_state->last_used_for_pipeline,
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pipeline);
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/* We need to be sure to flush any uniforms that have changed
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since the last flush */
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if (uniforms_state)
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_cogl_bitmask_set_flags (&uniforms_state->changed_mask,
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data.uniform_differences);
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/* Count the number of differences. This is so we can stop early
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when we've flushed all of them */
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data.n_differences = 0;
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for (i = 0; i < n_uniform_longs; i++)
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data.n_differences +=
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_cogl_util_popcountl (data.uniform_differences[i]);
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}
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while (pipeline && data.n_differences > 0)
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{
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if (pipeline->differences & COGL_PIPELINE_STATE_UNIFORMS)
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{
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const CoglPipelineUniformsState *parent_uniforms_state =
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&pipeline->big_state->uniforms_state;
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data.values = parent_uniforms_state->override_values;
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data.value_index = 0;
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_cogl_bitmask_foreach (&parent_uniforms_state->override_mask,
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flush_uniform_cb,
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&data);
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}
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pipeline = _cogl_pipeline_get_parent (pipeline);
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}
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if (uniforms_state)
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_cogl_bitmask_clear_all (&uniforms_state->changed_mask);
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}
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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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CoglPipelineProgramState *program_state;
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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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CoglPipeline *template_pipeline = NULL;
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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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program_state = get_program_state (pipeline);
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user_program = cogl_pipeline_get_user_program (pipeline);
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if (program_state == NULL)
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{
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CoglPipeline *authority;
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/* Get the authority for anything affecting program state. This
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should include both fragment codegen state and vertex codegen
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state */
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authority = _cogl_pipeline_find_equivalent_parent
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(pipeline,
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(COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN |
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_cogl_pipeline_get_state_for_fragment_codegen (ctx)) &
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~COGL_PIPELINE_STATE_LAYERS,
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_cogl_pipeline_get_layer_state_for_fragment_codegen (ctx) |
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COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN);
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program_state = get_program_state (authority);
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if (program_state == NULL)
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{
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/* Check if there is already a similar cached pipeline whose
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program state we can share */
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if (G_LIKELY (!(COGL_DEBUG_ENABLED
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(COGL_DEBUG_DISABLE_PROGRAM_CACHES))))
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{
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template_pipeline =
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_cogl_pipeline_cache_get_combined_template (ctx->pipeline_cache,
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authority);
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program_state = get_program_state (template_pipeline);
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}
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if (program_state)
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program_state->ref_count++;
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else
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program_state
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= program_state_new (cogl_pipeline_get_n_layers (authority));
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set_program_state (authority, program_state);
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if (template_pipeline)
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{
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program_state->ref_count++;
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set_program_state (template_pipeline, program_state);
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}
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}
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if (authority != pipeline)
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{
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program_state->ref_count++;
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set_program_state (pipeline, program_state);
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}
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}
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/* If the program has changed since the last link then we do
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* need to relink
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*
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* Also if the number of texture coordinate attributes in use has
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* changed, then delete the program so we can prepend a new
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* _cogl_tex_coord[] varying array declaration. */
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if ((program_state->program && user_program &&
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user_program->age != program_state->user_program_age) ||
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(ctx->driver == COGL_DRIVER_GLES2 &&
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n_tex_coord_attribs != program_state->n_tex_coord_attribs))
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{
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GE( ctx, glDeleteProgram (program_state->program) );
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program_state->program = 0;
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}
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if (program_state->program == 0)
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{
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GLuint backend_shader;
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GSList *l;
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GE_RET( program_state->program, ctx, glCreateProgram () );
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/* Attach all of the shader from the user program */
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if (user_program)
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{
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for (l = user_program->attached_shaders; l; l = l->next)
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{
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CoglShader *shader = l->data;
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_cogl_shader_compile_real (shader, n_tex_coord_attribs);
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g_assert (shader->language == COGL_SHADER_LANGUAGE_GLSL);
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GE( ctx, glAttachShader (program_state->program,
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shader->gl_handle) );
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}
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program_state->user_program_age = user_program->age;
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}
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/* Attach any shaders from the GLSL backends */
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if (pipeline->fragend == COGL_PIPELINE_FRAGEND_GLSL &&
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(backend_shader = _cogl_pipeline_fragend_glsl_get_shader (pipeline)))
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GE( ctx, glAttachShader (program_state->program, backend_shader) );
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if (pipeline->vertend == COGL_PIPELINE_VERTEND_GLSL &&
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(backend_shader = _cogl_pipeline_vertend_glsl_get_shader (pipeline)))
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GE( ctx, glAttachShader (program_state->program, backend_shader) );
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link_program (program_state->program);
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program_changed = TRUE;
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program_state->n_tex_coord_attribs = n_tex_coord_attribs;
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}
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gl_program = program_state->program;
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if (pipeline->fragend == COGL_PIPELINE_FRAGEND_GLSL)
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_cogl_use_fragment_program (gl_program, COGL_PIPELINE_PROGRAM_TYPE_GLSL);
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if (pipeline->vertend == COGL_PIPELINE_VERTEND_GLSL)
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_cogl_use_vertex_program (gl_program, COGL_PIPELINE_PROGRAM_TYPE_GLSL);
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state.unit = 0;
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state.gl_program = gl_program;
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state.program_state = program_state;
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|
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if (program_changed)
|
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{
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cogl_pipeline_foreach_layer (pipeline,
|
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get_uniform_cb,
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&state);
|
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clear_attribute_cache (program_state);
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GE_RET (program_state->flip_uniform,
|
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ctx, glGetUniformLocation (gl_program, "_cogl_flip_vector"));
|
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program_state->flushed_flip_state = -1;
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}
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|
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state.unit = 0;
|
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state.update_all = (program_changed ||
|
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program_state->last_used_for_pipeline != pipeline);
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|
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cogl_pipeline_foreach_layer (pipeline,
|
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update_constants_cb,
|
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&state);
|
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|
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#ifdef HAVE_COGL_GLES2
|
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if (ctx->driver == COGL_DRIVER_GLES2)
|
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{
|
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if (program_changed)
|
|
{
|
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int i;
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|
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clear_flushed_matrix_stacks (program_state);
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for (i = 0; i < G_N_ELEMENTS (builtin_uniforms); i++)
|
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GE_RET( program_state->builtin_uniform_locations[i], ctx,
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glGetUniformLocation (gl_program,
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builtin_uniforms[i].uniform_name) );
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GE_RET( program_state->modelview_uniform, ctx,
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glGetUniformLocation (gl_program,
|
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"cogl_modelview_matrix") );
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GE_RET( program_state->projection_uniform, ctx,
|
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glGetUniformLocation (gl_program,
|
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"cogl_projection_matrix") );
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|
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GE_RET( program_state->mvp_uniform, ctx,
|
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glGetUniformLocation (gl_program,
|
|
"cogl_modelview_projection_matrix") );
|
|
}
|
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if (program_changed ||
|
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program_state->last_used_for_pipeline != pipeline)
|
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program_state->dirty_builtin_uniforms = ~(unsigned long) 0;
|
|
|
|
update_builtin_uniforms (pipeline, gl_program, program_state);
|
|
}
|
|
#endif
|
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|
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_cogl_pipeline_progend_glsl_flush_uniforms (pipeline,
|
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program_state,
|
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gl_program,
|
|
program_changed);
|
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|
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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);
|
|
|
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if ((change & _cogl_pipeline_get_state_for_fragment_codegen (ctx)))
|
|
dirty_program_state (pipeline);
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
else if (ctx->driver == COGL_DRIVER_GLES2)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (builtin_uniforms); i++)
|
|
if ((change & builtin_uniforms[i].change))
|
|
{
|
|
CoglPipelineProgramState *program_state
|
|
= get_program_state (pipeline);
|
|
if (program_state)
|
|
program_state->dirty_builtin_uniforms |= 1 << i;
|
|
return;
|
|
}
|
|
}
|
|
#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)
|
|
{
|
|
_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)
|
|
{
|
|
gboolean needs_flip;
|
|
CoglMatrixStack *projection_stack;
|
|
CoglMatrixStack *modelview_stack;
|
|
CoglPipelineProgramState *program_state;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (pipeline->vertend != COGL_PIPELINE_VERTEND_GLSL)
|
|
return;
|
|
|
|
program_state = get_program_state (pipeline);
|
|
|
|
projection_stack = ctx->current_projection_stack;
|
|
modelview_stack = ctx->current_modelview_stack;
|
|
|
|
/* 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_stack == NULL || projection_stack == NULL)
|
|
return;
|
|
|
|
needs_flip = cogl_is_offscreen (ctx->current_draw_buffer);
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
if (ctx->driver == COGL_DRIVER_GLES2)
|
|
{
|
|
gboolean modelview_changed;
|
|
gboolean projection_changed;
|
|
gboolean need_modelview;
|
|
gboolean need_projection;
|
|
CoglMatrix modelview, projection;
|
|
|
|
projection_changed =
|
|
_cogl_matrix_stack_check_and_update_cache (projection_stack,
|
|
&program_state->
|
|
projection_cache,
|
|
needs_flip &&
|
|
program_state->
|
|
flip_uniform == -1);
|
|
|
|
modelview_changed =
|
|
_cogl_matrix_stack_check_and_update_cache (modelview_stack,
|
|
&program_state->
|
|
modelview_cache,
|
|
/* 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_stack_get (modelview_stack, &modelview);
|
|
if (need_projection)
|
|
{
|
|
if (needs_flip && program_state->flip_uniform == -1)
|
|
{
|
|
CoglMatrix tmp_matrix;
|
|
_cogl_matrix_stack_get (projection_stack, &tmp_matrix);
|
|
cogl_matrix_multiply (&projection,
|
|
&ctx->y_flip_matrix,
|
|
&tmp_matrix);
|
|
}
|
|
else
|
|
_cogl_matrix_stack_get (projection_stack, &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_stack_has_identity_flag (modelview_stack))
|
|
{
|
|
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)));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
gboolean disable_flip;
|
|
|
|
/* If there are vertex snippets, then we'll disable flipping the
|
|
geometry via the matrix and use the flip vertex instead */
|
|
disable_flip = program_state->flip_uniform != -1;
|
|
|
|
_cogl_matrix_stack_flush_to_gl_builtins (ctx,
|
|
projection_stack,
|
|
COGL_MATRIX_PROJECTION,
|
|
disable_flip);
|
|
_cogl_matrix_stack_flush_to_gl_builtins (ctx,
|
|
modelview_stack,
|
|
COGL_MATRIX_MODELVIEW,
|
|
disable_flip);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
|
|
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) );
|
|
}
|
|
|
|
#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,
|
|
_cogl_pipeline_progend_glsl_pre_paint
|
|
};
|
|
|
|
#endif /* COGL_PIPELINE_PROGEND_GLSL */
|