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Diffstat (limited to 'src/glsl/program.h')
| -rw-r--r-- | src/glsl/program.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/glsl/program.h b/src/glsl/program.h new file mode 100644 index 00000000000..d21b04344cd --- /dev/null +++ b/src/glsl/program.h @@ -0,0 +1,155 @@ +/* + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. All Rights Reserved. + * Copyright © 2010 Intel Corporation + * + * 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 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 + * BRIAN PAUL 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. + */ + +#include <GL/gl.h> +#include "main/mtypes.h" + +/** + * Based on gl_shader in Mesa's mtypes.h. + */ +struct glsl_shader { + GLenum Type; + GLuint Name; + GLint RefCount; + GLboolean DeletePending; + GLboolean CompileStatus; + const GLchar *Source; /**< Source code string */ + size_t SourceLen; + GLchar *InfoLog; + + struct exec_list ir; + struct glsl_symbol_table *symbols; +}; + + +typedef int gl_state_index; +#define STATE_LENGTH 5 + +/** + * Program parameter. + * Used by shaders/programs for uniforms, constants, varying vars, etc. + */ +struct gl_program_parameter +{ + const char *Name; /**< Null-terminated string */ + gl_register_file Type; /**< PROGRAM_NAMED_PARAM, CONSTANT or STATE_VAR */ + GLenum DataType; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */ + /** + * Number of components (1..4), or more. + * If the number of components is greater than 4, + * this parameter is part of a larger uniform like a GLSL matrix or array. + * The next program parameter's Size will be Size-4 of this parameter. + */ + GLuint Size; + GLboolean Used; /**< Helper flag for GLSL uniform tracking */ + GLboolean Initialized; /**< Has the ParameterValue[] been set? */ + GLbitfield Flags; /**< Bitmask of PROG_PARAM_*_BIT */ + /** + * A sequence of STATE_* tokens and integers to identify GL state. + */ + gl_state_index StateIndexes[STATE_LENGTH]; +}; + + +/** + * List of gl_program_parameter instances. + */ +struct gl_program_parameter_list +{ + GLuint Size; /**< allocated size of Parameters, ParameterValues */ + GLuint NumParameters; /**< number of parameters in arrays */ + struct gl_program_parameter *Parameters; /**< Array [Size] */ + GLfloat (*ParameterValues)[4]; /**< Array [Size] of GLfloat[4] */ + GLbitfield StateFlags; /**< _NEW_* flags indicating which state changes + might invalidate ParameterValues[] */ +}; + + +/** + * Shader program uniform variable. + * The glGetUniformLocation() and glUniform() commands will use this + * information. + * Note that a uniform such as "binormal" might be used in both the + * vertex shader and the fragment shader. When glUniform() is called to + * set the uniform's value, it must be updated in both the vertex and + * fragment shaders. The uniform may be in different locations in the + * two shaders so we keep track of that here. + */ +struct gl_uniform +{ + const char *Name; /**< Null-terminated string */ + GLint VertPos; + GLint FragPos; + GLboolean Initialized; /**< For debug. Has this uniform been set? */ +#if 0 + GLenum DataType; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */ + GLuint Size; /**< Number of components (1..4) */ +#endif +}; + + +/** + * List of gl_uniforms + */ +struct gl_uniform_list +{ + GLuint Size; /**< allocated size of Uniforms array */ + GLuint NumUniforms; /**< number of uniforms in the array */ + struct gl_uniform *Uniforms; /**< Array [Size] */ +}; + + +/** + * Based on gl_shader_program in Mesa's mtypes.h. + */ +struct glsl_program { + GLenum Type; /**< Always GL_SHADER_PROGRAM (internal token) */ + GLuint Name; /**< aka handle or ID */ + GLint RefCount; /**< Reference count */ + GLboolean DeletePending; + + GLuint NumShaders; /**< number of attached shaders */ + struct glsl_shader **Shaders; /**< List of attached the shaders */ + + /** + * Per-stage shaders resulting from the first stage of linking. + */ + /*@{*/ + unsigned _NumLinkedShaders; + struct glsl_shader **_LinkedShaders; + /*@}*/ + + /** User-defined attribute bindings (glBindAttribLocation) */ + struct gl_program_parameter_list *Attributes; + + /* post-link info: */ + struct gl_uniform_list *Uniforms; + struct gl_program_parameter_list *Varying; + GLboolean LinkStatus; /**< GL_LINK_STATUS */ + GLboolean Validated; + GLboolean _Used; /**< Ever used for drawing? */ + GLchar *InfoLog; +}; + +extern void +link_shaders(struct glsl_program *prog); |