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Diffstat (limited to 'mesalib/src/mesa/main/pipelineobj.c')
| -rw-r--r-- | mesalib/src/mesa/main/pipelineobj.c | 445 |
1 files changed, 445 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/pipelineobj.c b/mesalib/src/mesa/main/pipelineobj.c new file mode 100644 index 000000000..27012df72 --- /dev/null +++ b/mesalib/src/mesa/main/pipelineobj.c @@ -0,0 +1,445 @@ +/* + * Mesa 3-D graphics library + * + * Copyright © 2013 Gregory Hainaut <gregory.hainaut@gmail.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +/** + * \file pipelineobj.c + * \author Hainaut Gregory <gregory.hainaut@gmail.com> + * + * Implementation of pipeline object related API functions. Based on + * GL_ARB_separate_shader_objects extension. + */ + +#include "main/glheader.h" +#include "main/context.h" +#include "main/dispatch.h" +#include "main/enums.h" +#include "main/hash.h" +#include "main/mtypes.h" +#include "main/pipelineobj.h" +#include "main/shaderapi.h" +#include "main/shaderobj.h" +#include "main/transformfeedback.h" +#include "main/uniforms.h" +#include "program/program.h" +#include "program/prog_parameter.h" +#include "ralloc.h" +#include <stdbool.h> +#include "../glsl/glsl_parser_extras.h" +#include "../glsl/ir_uniform.h" + +/** + * Delete a pipeline object. + */ +void +_mesa_delete_pipeline_object(struct gl_context *ctx, + struct gl_pipeline_object *obj) +{ + unsigned i; + + _mesa_reference_shader_program(ctx, &obj->_CurrentFragmentProgram, NULL); + + for (i = 0; i < MESA_SHADER_STAGES; i++) + _mesa_reference_shader_program(ctx, &obj->CurrentProgram[i], NULL); + + _mesa_reference_shader_program(ctx, &obj->ActiveProgram, NULL); + mtx_destroy(&obj->Mutex); + ralloc_free(obj); +} + +/** + * Allocate and initialize a new pipeline object. + */ +static struct gl_pipeline_object * +_mesa_new_pipeline_object(struct gl_context *ctx, GLuint name) +{ + struct gl_pipeline_object *obj = rzalloc(NULL, struct gl_pipeline_object); + if (obj) { + obj->Name = name; + mtx_init(&obj->Mutex, mtx_plain); + obj->RefCount = 1; + obj->Flags = _mesa_get_shader_flags(); + } + + return obj; +} + +/** + * Initialize pipeline object state for given context. + */ +void +_mesa_init_pipeline(struct gl_context *ctx) +{ + ctx->Pipeline.Objects = _mesa_NewHashTable(); + + ctx->Pipeline.Current = NULL; +} + + +/** + * Callback for deleting a pipeline object. Called by _mesa_HashDeleteAll(). + */ +static void +delete_pipelineobj_cb(GLuint id, void *data, void *userData) +{ + struct gl_pipeline_object *obj = (struct gl_pipeline_object *) data; + struct gl_context *ctx = (struct gl_context *) userData; + _mesa_delete_pipeline_object(ctx, obj); +} + + +/** + * Free pipeline state for given context. + */ +void +_mesa_free_pipeline_data(struct gl_context *ctx) +{ + _mesa_HashDeleteAll(ctx->Pipeline.Objects, delete_pipelineobj_cb, ctx); + _mesa_DeleteHashTable(ctx->Pipeline.Objects); +} + +/** + * Look up the pipeline object for the given ID. + * + * \returns + * Either a pointer to the pipeline object with the specified ID or \c NULL for + * a non-existent ID. The spec defines ID 0 as being technically + * non-existent. + */ +static inline struct gl_pipeline_object * +lookup_pipeline_object(struct gl_context *ctx, GLuint id) +{ + if (id == 0) + return NULL; + else + return (struct gl_pipeline_object *) + _mesa_HashLookup(ctx->Pipeline.Objects, id); +} + +/** + * Add the given pipeline object to the pipeline object pool. + */ +static void +save_pipeline_object(struct gl_context *ctx, struct gl_pipeline_object *obj) +{ + if (obj->Name > 0) { + _mesa_HashInsert(ctx->Pipeline.Objects, obj->Name, obj); + } +} + +/** + * Remove the given pipeline object from the pipeline object pool. + * Do not deallocate the pipeline object though. + */ +static void +remove_pipeline_object(struct gl_context *ctx, struct gl_pipeline_object *obj) +{ + if (obj->Name > 0) { + _mesa_HashRemove(ctx->Pipeline.Objects, obj->Name); + } +} + +/** + * Set ptr to obj w/ reference counting. + * Note: this should only be called from the _mesa_reference_pipeline_object() + * inline function. + */ +void +_mesa_reference_pipeline_object_(struct gl_context *ctx, + struct gl_pipeline_object **ptr, + struct gl_pipeline_object *obj) +{ + assert(*ptr != obj); + + if (*ptr) { + /* Unreference the old pipeline object */ + GLboolean deleteFlag = GL_FALSE; + struct gl_pipeline_object *oldObj = *ptr; + + mtx_lock(&oldObj->Mutex); + ASSERT(oldObj->RefCount > 0); + oldObj->RefCount--; + deleteFlag = (oldObj->RefCount == 0); + mtx_unlock(&oldObj->Mutex); + + if (deleteFlag) { + _mesa_delete_pipeline_object(ctx, oldObj); + } + + *ptr = NULL; + } + ASSERT(!*ptr); + + if (obj) { + /* reference new pipeline object */ + mtx_lock(&obj->Mutex); + if (obj->RefCount == 0) { + /* this pipeline's being deleted (look just above) */ + /* Not sure this can ever really happen. Warn if it does. */ + _mesa_problem(NULL, "referencing deleted pipeline object"); + *ptr = NULL; + } + else { + obj->RefCount++; + *ptr = obj; + } + mtx_unlock(&obj->Mutex); + } +} + +/** + * Bound program to severals stages of the pipeline + */ +void GLAPIENTRY +_mesa_UseProgramStages(GLuint pipeline, GLbitfield stages, GLuint program) +{ +} + +/** + * Use the named shader program for subsequent glUniform calls (if pipeline + * bound) + */ +void GLAPIENTRY +_mesa_ActiveShaderProgram(GLuint pipeline, GLuint program) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_shader_program *shProg = NULL; + struct gl_pipeline_object *pipe = lookup_pipeline_object(ctx, pipeline); + + if (program != 0) { + shProg = _mesa_lookup_shader_program_err(ctx, program, + "glActiveShaderProgram(program)"); + if (shProg == NULL) + return; + } + + if (!pipe) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glActiveShaderProgram(pipeline)"); + return; + } + + /* Object is created by any Pipeline call but glGenProgramPipelines, + * glIsProgramPipeline and GetProgramPipelineInfoLog + */ + pipe->EverBound = GL_TRUE; + + if ((shProg != NULL) && !shProg->LinkStatus) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glActiveShaderProgram(program %u not linked)", shProg->Name); + return; + } + + _mesa_reference_shader_program(ctx, &pipe->ActiveProgram, shProg); +} + +/** + * Make program of the pipeline current + */ +void GLAPIENTRY +_mesa_BindProgramPipeline(GLuint pipeline) +{ +} + +/** + * Delete a set of pipeline objects. + * + * \param n Number of pipeline objects to delete. + * \param ids pipeline of \c n pipeline object IDs. + */ +void GLAPIENTRY +_mesa_DeleteProgramPipelines(GLsizei n, const GLuint *pipelines) +{ + GET_CURRENT_CONTEXT(ctx); + GLsizei i; + + if (n < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteProgramPipelines(n<0)"); + return; + } + + for (i = 0; i < n; i++) { + struct gl_pipeline_object *obj = + lookup_pipeline_object(ctx, pipelines[i]); + + if (obj) { + ASSERT(obj->Name == pipelines[i]); + + /* If the pipeline object is currently bound, the spec says "If an + * object that is currently bound is deleted, the binding for that + * object reverts to zero and no program pipeline object becomes + * current." + */ + if (obj == ctx->Pipeline.Current) { + _mesa_BindProgramPipeline(0); + } + + /* The ID is immediately freed for re-use */ + remove_pipeline_object(ctx, obj); + + /* Unreference the pipeline object. + * If refcount hits zero, the object will be deleted. + */ + _mesa_reference_pipeline_object(ctx, &obj, NULL); + } + } +} + +/** + * Generate a set of unique pipeline object IDs and store them in \c pipelines. + * \param n Number of IDs to generate. + * \param pipelines pipeline of \c n locations to store the IDs. + */ +void GLAPIENTRY +_mesa_GenProgramPipelines(GLsizei n, GLuint *pipelines) +{ + GET_CURRENT_CONTEXT(ctx); + + GLuint first; + GLint i; + + if (n < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGenProgramPipelines(n<0)"); + return; + } + + if (!pipelines) { + return; + } + + first = _mesa_HashFindFreeKeyBlock(ctx->Pipeline.Objects, n); + + for (i = 0; i < n; i++) { + struct gl_pipeline_object *obj; + GLuint name = first + i; + + obj = _mesa_new_pipeline_object(ctx, name); + if (!obj) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenProgramPipelines"); + return; + } + + save_pipeline_object(ctx, obj); + pipelines[i] = first + i; + } + +} + +/** + * Determine if ID is the name of an pipeline object. + * + * \param id ID of the potential pipeline object. + * \return \c GL_TRUE if \c id is the name of a pipeline object, + * \c GL_FALSE otherwise. + */ +GLboolean GLAPIENTRY +_mesa_IsProgramPipeline(GLuint pipeline) +{ + GET_CURRENT_CONTEXT(ctx); + + struct gl_pipeline_object *obj = lookup_pipeline_object(ctx, pipeline); + if (obj == NULL) + return GL_FALSE; + + return obj->EverBound; +} + +/** + * glGetProgramPipelineiv() - get pipeline shader state. + */ +void GLAPIENTRY +_mesa_GetProgramPipelineiv(GLuint pipeline, GLenum pname, GLint *params) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_pipeline_object *pipe = lookup_pipeline_object(ctx, pipeline); + + /* Are geometry shaders available in this context? + */ + const bool has_gs = _mesa_has_geometry_shaders(ctx); + + if (!pipe) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetProgramPipelineiv(pipeline)"); + return; + } + + /* Object is created by any Pipeline call but glGenProgramPipelines, + * glIsProgramPipeline and GetProgramPipelineInfoLog + */ + pipe->EverBound = GL_TRUE; + + switch (pname) { + case GL_ACTIVE_PROGRAM: + *params = pipe->ActiveProgram ? pipe->ActiveProgram->Name : 0; + return; + case GL_INFO_LOG_LENGTH: + /* FINISHME: Implement the info log. + */ + *params = 0; + return; + case GL_VALIDATE_STATUS: + /* FINISHME: Implement validation status. + */ + *params = 0; + return; + case GL_VERTEX_SHADER: + *params = pipe->CurrentProgram[MESA_SHADER_VERTEX] + ? pipe->CurrentProgram[MESA_SHADER_VERTEX]->Name : 0; + return; + case GL_TESS_EVALUATION_SHADER: + /* NOT YET SUPPORTED */ + break; + case GL_TESS_CONTROL_SHADER: + /* NOT YET SUPPORTED */ + break; + case GL_GEOMETRY_SHADER: + if (!has_gs) + break; + *params = pipe->CurrentProgram[MESA_SHADER_GEOMETRY] + ? pipe->CurrentProgram[MESA_SHADER_GEOMETRY]->Name : 0; + return; + case GL_FRAGMENT_SHADER: + *params = pipe->CurrentProgram[MESA_SHADER_FRAGMENT] + ? pipe->CurrentProgram[MESA_SHADER_FRAGMENT]->Name : 0; + return; + default: + break; + } + + _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramPipelineiv(pname=%s)", + _mesa_lookup_enum_by_nr(pname)); +} + +/** + * Check compatibility of pipeline's program + */ +void GLAPIENTRY +_mesa_ValidateProgramPipeline(GLuint pipeline) +{ +} + +void GLAPIENTRY +_mesa_GetProgramPipelineInfoLog(GLuint pipeline, GLsizei bufSize, + GLsizei *length, GLchar *infoLog) +{ +} |