src/mesa/main/shaderobj.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2004-2007  Brian Paul   All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef SHADEROBJ_H
  27 #define SHADEROBJ_H
  28
  29
  30 #include "main/compiler.h"
  31 #include "main/glheader.h"
  32 #include "main/mtypes.h"
  33 #include "program/ir_to_mesa.h"
  34
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40
  41 /**
  42  * Internal functions
  43  */
  44
  45 extern void
  46 _mesa_init_shader_state(struct gl_context * ctx);
  47
  48 extern void
  49 _mesa_free_shader_state(struct gl_context *ctx);
  50
  51
  52 extern void
  53 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  54                        struct gl_shader *sh);
  55
  56 extern struct gl_shader *
  57 _mesa_lookup_shader(struct gl_context *ctx, GLuint name);
  58
  59 extern struct gl_shader *
  60 _mesa_lookup_shader_err(struct gl_context *ctx, GLuint name, const char *caller);
  61
  62
  63
  64 extern void
  65 _mesa_reference_shader_program_(struct gl_context *ctx,
  66                                struct gl_shader_program **ptr,
  67                                struct gl_shader_program *shProg);
  68
  69 static inline void
  70 _mesa_reference_shader_program(struct gl_context *ctx,
  71                                struct gl_shader_program **ptr,
  72                                struct gl_shader_program *shProg)
  73 {
  74    if (*ptr != shProg)
  75       _mesa_reference_shader_program_(ctx, ptr, shProg);
  76 }
  77
  78
  79 extern void
  80 _mesa_init_shader(struct gl_context *ctx, struct gl_shader *shader);
  81
  82 extern struct gl_shader *
  83 _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type);
  84
  85 extern struct gl_shader_program *
  86 _mesa_lookup_shader_program(struct gl_context *ctx, GLuint name);
  87
  88 extern struct gl_shader_program *
  89 _mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,
  90                                 const char *caller);
  91
  92 extern void
  93 _mesa_clear_shader_program_data(struct gl_shader_program *shProg);
  94
  95 extern void
  96 _mesa_free_shader_program_data(struct gl_context *ctx,
  97                                struct gl_shader_program *shProg);
  98
  99
 100
 101 extern void
 102 _mesa_init_shader_object_functions(struct dd_function_table *driver);
 103
 104 static inline gl_shader_stage
 105 _mesa_shader_enum_to_shader_stage(GLenum v)
 106 {
 107    switch (v) {
 108    case GL_VERTEX_SHADER:
 109       return MESA_SHADER_VERTEX;
 110    case GL_FRAGMENT_SHADER:
 111       return MESA_SHADER_FRAGMENT;
 112    case GL_GEOMETRY_SHADER:
 113       return MESA_SHADER_GEOMETRY;
 114    case GL_TESS_CONTROL_SHADER:
 115       return MESA_SHADER_TESS_CTRL;
 116    case GL_TESS_EVALUATION_SHADER:
 117       return MESA_SHADER_TESS_EVAL;
 118    case GL_COMPUTE_SHADER:
 119       return MESA_SHADER_COMPUTE;
 120    default:
 121       assert(0 && "bad value in _mesa_shader_enum_to_shader_stage()");
 122       return MESA_SHADER_VERTEX;
 123    }
 124 }
 125
 126 /* 8 bytes + another underscore */
 127 #define MESA_SUBROUTINE_PREFIX_LEN 9
 128 static inline const char *
 129 _mesa_shader_stage_to_subroutine_prefix(gl_shader_stage stage)
 130 {
 131   switch (stage) {
 132   case MESA_SHADER_VERTEX:
 133     return "__subu_v";
 134   case MESA_SHADER_GEOMETRY:
 135     return "__subu_g";
 136   case MESA_SHADER_FRAGMENT:
 137     return "__subu_f";
 138   case MESA_SHADER_COMPUTE:
 139     return "__subu_c";
 140   case MESA_SHADER_TESS_CTRL:
 141     return "__subu_t";
 142   case MESA_SHADER_TESS_EVAL:
 143     return "__subu_e";
 144   default:
 145     return NULL;
 146   }
 147 }
 148
 149 static inline gl_shader_stage
 150 _mesa_shader_stage_from_subroutine_uniform(GLenum subuniform)
 151 {
 152    switch (subuniform) {
 153    default:
 154    case GL_VERTEX_SUBROUTINE_UNIFORM:
 155       return MESA_SHADER_VERTEX;
 156    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 157       return MESA_SHADER_GEOMETRY;
 158    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 159       return MESA_SHADER_FRAGMENT;
 160    case GL_COMPUTE_SUBROUTINE_UNIFORM:
 161       return MESA_SHADER_COMPUTE;
 162    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 163       return MESA_SHADER_TESS_CTRL;
 164    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
 165       return MESA_SHADER_TESS_EVAL;
 166    }
 167 }
 168
 169 static inline gl_shader_stage
 170 _mesa_shader_stage_from_subroutine(GLenum subroutine)
 171 {
 172    switch (subroutine) {
 173    case GL_VERTEX_SUBROUTINE:
 174       return MESA_SHADER_VERTEX;
 175    case GL_GEOMETRY_SUBROUTINE:
 176       return MESA_SHADER_GEOMETRY;
 177    case GL_FRAGMENT_SUBROUTINE:
 178       return MESA_SHADER_FRAGMENT;
 179    case GL_COMPUTE_SUBROUTINE:
 180       return MESA_SHADER_COMPUTE;
 181    case GL_TESS_CONTROL_SUBROUTINE:
 182       return MESA_SHADER_TESS_CTRL;
 183    case GL_TESS_EVALUATION_SUBROUTINE:
 184       return MESA_SHADER_TESS_EVAL;
 185    }
 186 }
 187
 188 static inline GLenum
 189 _mesa_shader_stage_to_subroutine(gl_shader_stage stage)
 190 {
 191    switch (stage) {
 192    default:
 193    case MESA_SHADER_VERTEX:
 194       return GL_VERTEX_SUBROUTINE;
 195    case MESA_SHADER_GEOMETRY:
 196       return GL_GEOMETRY_SUBROUTINE;
 197    case MESA_SHADER_FRAGMENT:
 198       return GL_FRAGMENT_SUBROUTINE;
 199    case MESA_SHADER_COMPUTE:
 200       return GL_COMPUTE_SUBROUTINE;
 201    case MESA_SHADER_TESS_CTRL:
 202       return GL_TESS_CONTROL_SUBROUTINE;
 203    case MESA_SHADER_TESS_EVAL:
 204       return GL_TESS_EVALUATION_SUBROUTINE;
 205    }
 206 }
 207
 208 static inline GLenum
 209 _mesa_shader_stage_to_subroutine_uniform(gl_shader_stage stage)
 210 {
 211    switch (stage) {
 212    default:
 213    case MESA_SHADER_VERTEX:
 214       return GL_VERTEX_SUBROUTINE_UNIFORM;
 215    case MESA_SHADER_GEOMETRY:
 216       return GL_GEOMETRY_SUBROUTINE_UNIFORM;
 217    case MESA_SHADER_FRAGMENT:
 218       return GL_FRAGMENT_SUBROUTINE_UNIFORM;
 219    case MESA_SHADER_COMPUTE:
 220       return GL_COMPUTE_SUBROUTINE_UNIFORM;
 221    case MESA_SHADER_TESS_CTRL:
 222       return GL_TESS_CONTROL_SUBROUTINE_UNIFORM;
 223    case MESA_SHADER_TESS_EVAL:
 224       return GL_TESS_EVALUATION_SUBROUTINE_UNIFORM;
 225    }
 226 }
 227
 228 #ifdef __cplusplus
 229 }
 230 #endif
 231
 232 #endif /* SHADEROBJ_H */