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 extern struct gl_shader *
  79 _mesa_new_shader(GLuint name, gl_shader_stage type);
  80
  81 extern struct gl_linked_shader *
  82 _mesa_new_linked_shader(gl_shader_stage type);
  83
  84 extern void
  85 _mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh);
  86
  87 extern void
  88 _mesa_delete_linked_shader(struct gl_context *ctx,
  89                            struct gl_linked_shader *sh);
  90
  91 extern struct gl_shader_program *
  92 _mesa_lookup_shader_program(struct gl_context *ctx, GLuint name);
  93
  94 extern struct gl_shader_program *
  95 _mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,
  96                                 const char *caller);
  97
  98 extern struct gl_shader_program *
  99 _mesa_new_shader_program(GLuint name);
 100
 101 extern void
 102 _mesa_clear_shader_program_data(struct gl_shader_program *shProg);
 103
 104 extern void
 105 _mesa_free_shader_program_data(struct gl_context *ctx,
 106                                struct gl_shader_program *shProg);
 107
 108 extern void
 109 _mesa_delete_shader_program(struct gl_context *ctx,
 110                             struct gl_shader_program *shProg);
 111
 112
 113 extern void
 114 _mesa_init_shader_object_functions(struct dd_function_table *driver);
 115
 116 static inline gl_shader_stage
 117 _mesa_shader_enum_to_shader_stage(GLenum v)
 118 {
 119    switch (v) {
 120    case GL_VERTEX_SHADER:
 121       return MESA_SHADER_VERTEX;
 122    case GL_FRAGMENT_SHADER:
 123       return MESA_SHADER_FRAGMENT;
 124    case GL_GEOMETRY_SHADER:
 125       return MESA_SHADER_GEOMETRY;
 126    case GL_TESS_CONTROL_SHADER:
 127       return MESA_SHADER_TESS_CTRL;
 128    case GL_TESS_EVALUATION_SHADER:
 129       return MESA_SHADER_TESS_EVAL;
 130    case GL_COMPUTE_SHADER:
 131       return MESA_SHADER_COMPUTE;
 132    default:
 133       unreachable("bad value in _mesa_shader_enum_to_shader_stage()");
 134    }
 135 }
 136
 137 /* 8 bytes + another underscore */
 138 #define MESA_SUBROUTINE_PREFIX_LEN 9
 139 static inline const char *
 140 _mesa_shader_stage_to_subroutine_prefix(gl_shader_stage stage)
 141 {
 142   switch (stage) {
 143   case MESA_SHADER_VERTEX:
 144     return "__subu_v";
 145   case MESA_SHADER_GEOMETRY:
 146     return "__subu_g";
 147   case MESA_SHADER_FRAGMENT:
 148     return "__subu_f";
 149   case MESA_SHADER_COMPUTE:
 150     return "__subu_c";
 151   case MESA_SHADER_TESS_CTRL:
 152     return "__subu_t";
 153   case MESA_SHADER_TESS_EVAL:
 154     return "__subu_e";
 155   default:
 156     return NULL;
 157   }
 158 }
 159
 160 static inline gl_shader_stage
 161 _mesa_shader_stage_from_subroutine_uniform(GLenum subuniform)
 162 {
 163    switch (subuniform) {
 164    case GL_VERTEX_SUBROUTINE_UNIFORM:
 165       return MESA_SHADER_VERTEX;
 166    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 167       return MESA_SHADER_GEOMETRY;
 168    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 169       return MESA_SHADER_FRAGMENT;
 170    case GL_COMPUTE_SUBROUTINE_UNIFORM:
 171       return MESA_SHADER_COMPUTE;
 172    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 173       return MESA_SHADER_TESS_CTRL;
 174    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
 175       return MESA_SHADER_TESS_EVAL;
 176    }
 177    unreachable("not reached");
 178 }
 179
 180 static inline gl_shader_stage
 181 _mesa_shader_stage_from_subroutine(GLenum subroutine)
 182 {
 183    switch (subroutine) {
 184    case GL_VERTEX_SUBROUTINE:
 185       return MESA_SHADER_VERTEX;
 186    case GL_GEOMETRY_SUBROUTINE:
 187       return MESA_SHADER_GEOMETRY;
 188    case GL_FRAGMENT_SUBROUTINE:
 189       return MESA_SHADER_FRAGMENT;
 190    case GL_COMPUTE_SUBROUTINE:
 191       return MESA_SHADER_COMPUTE;
 192    case GL_TESS_CONTROL_SUBROUTINE:
 193       return MESA_SHADER_TESS_CTRL;
 194    case GL_TESS_EVALUATION_SUBROUTINE:
 195       return MESA_SHADER_TESS_EVAL;
 196    }
 197    unreachable("not reached");
 198 }
 199
 200 static inline GLenum
 201 _mesa_shader_stage_to_subroutine(gl_shader_stage stage)
 202 {
 203    switch (stage) {
 204    case MESA_SHADER_VERTEX:
 205       return GL_VERTEX_SUBROUTINE;
 206    case MESA_SHADER_GEOMETRY:
 207       return GL_GEOMETRY_SUBROUTINE;
 208    case MESA_SHADER_FRAGMENT:
 209       return GL_FRAGMENT_SUBROUTINE;
 210    case MESA_SHADER_COMPUTE:
 211       return GL_COMPUTE_SUBROUTINE;
 212    case MESA_SHADER_TESS_CTRL:
 213       return GL_TESS_CONTROL_SUBROUTINE;
 214    case MESA_SHADER_TESS_EVAL:
 215       return GL_TESS_EVALUATION_SUBROUTINE;
 216    }
 217    unreachable("not reached");
 218 }
 219
 220 static inline GLenum
 221 _mesa_shader_stage_to_subroutine_uniform(gl_shader_stage stage)
 222 {
 223    switch (stage) {
 224    case MESA_SHADER_VERTEX:
 225       return GL_VERTEX_SUBROUTINE_UNIFORM;
 226    case MESA_SHADER_GEOMETRY:
 227       return GL_GEOMETRY_SUBROUTINE_UNIFORM;
 228    case MESA_SHADER_FRAGMENT:
 229       return GL_FRAGMENT_SUBROUTINE_UNIFORM;
 230    case MESA_SHADER_COMPUTE:
 231       return GL_COMPUTE_SUBROUTINE_UNIFORM;
 232    case MESA_SHADER_TESS_CTRL:
 233       return GL_TESS_CONTROL_SUBROUTINE_UNIFORM;
 234    case MESA_SHADER_TESS_EVAL:
 235       return GL_TESS_EVALUATION_SUBROUTINE_UNIFORM;
 236    }
 237    unreachable("not reached");
 238 }
 239
 240 extern bool
 241 _mesa_validate_pipeline_io(struct gl_pipeline_object *);
 242
 243 #ifdef __cplusplus
 244 }
 245 #endif
 246
 247 #endif /* SHADEROBJ_H */