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/glheader.h"
  31 #include "compiler/shader_enums.h"
  32 #include "program/ir_to_mesa.h"
  33 #include "util/macros.h"
  34
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40 struct gl_shader_program_data;
  41 struct gl_linked_shader;
  42 struct dd_function_table;
  43 struct gl_pipeline_object;
  44
  45 /**
  46  * Internal functions
  47  */
  48
  49 extern void
  50 _mesa_init_shader_state(struct gl_context * ctx);
  51
  52 extern void
  53 _mesa_free_shader_state(struct gl_context *ctx);
  54
  55
  56 extern void
  57 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  58                        struct gl_shader *sh);
  59
  60 extern struct gl_shader *
  61 _mesa_lookup_shader(struct gl_context *ctx, GLuint name);
  62
  63 extern struct gl_shader *
  64 _mesa_lookup_shader_err(struct gl_context *ctx, GLuint name, const char *caller);
  65
  66
  67
  68 extern void
  69 _mesa_reference_shader_program_(struct gl_context *ctx,
  70                                struct gl_shader_program **ptr,
  71                                struct gl_shader_program *shProg);
  72
  73 void
  74 _mesa_reference_shader_program_data(struct gl_context *ctx,
  75                                     struct gl_shader_program_data **ptr,
  76                                     struct gl_shader_program_data *data);
  77
  78 static inline void
  79 _mesa_reference_shader_program(struct gl_context *ctx,
  80                                struct gl_shader_program **ptr,
  81                                struct gl_shader_program *shProg)
  82 {
  83    if (*ptr != shProg)
  84       _mesa_reference_shader_program_(ctx, ptr, shProg);
  85 }
  86
  87 extern struct gl_shader *
  88 _mesa_new_shader(GLuint name, gl_shader_stage type);
  89
  90 extern void
  91 _mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh);
  92
  93 extern void
  94 _mesa_delete_linked_shader(struct gl_context *ctx,
  95                            struct gl_linked_shader *sh);
  96
  97 extern struct gl_shader_program *
  98 _mesa_lookup_shader_program(struct gl_context *ctx, GLuint name);
  99
 100 extern struct gl_shader_program *
 101 _mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,
 102                                 const char *caller);
 103
 104 extern struct gl_shader_program *
 105 _mesa_new_shader_program(GLuint name);
 106
 107 extern struct gl_shader_program_data *
 108 _mesa_create_shader_program_data(void);
 109
 110 extern void
 111 _mesa_clear_shader_program_data(struct gl_context *ctx,
 112                                 struct gl_shader_program *shProg);
 113
 114 extern void
 115 _mesa_free_shader_program_data(struct gl_context *ctx,
 116                                struct gl_shader_program *shProg);
 117
 118 extern void
 119 _mesa_delete_shader_program(struct gl_context *ctx,
 120                             struct gl_shader_program *shProg);
 121
 122
 123 extern void
 124 _mesa_init_shader_object_functions(struct dd_function_table *driver);
 125
 126 static inline gl_shader_stage
 127 _mesa_shader_enum_to_shader_stage(GLenum v)
 128 {
 129    switch (v) {
 130    case GL_VERTEX_SHADER:
 131       return MESA_SHADER_VERTEX;
 132    case GL_FRAGMENT_SHADER:
 133       return MESA_SHADER_FRAGMENT;
 134    case GL_GEOMETRY_SHADER:
 135       return MESA_SHADER_GEOMETRY;
 136    case GL_TESS_CONTROL_SHADER:
 137       return MESA_SHADER_TESS_CTRL;
 138    case GL_TESS_EVALUATION_SHADER:
 139       return MESA_SHADER_TESS_EVAL;
 140    case GL_COMPUTE_SHADER:
 141       return MESA_SHADER_COMPUTE;
 142    default:
 143       unreachable("bad value in _mesa_shader_enum_to_shader_stage()");
 144    }
 145 }
 146
 147 /* 8 bytes + another underscore */
 148 #define MESA_SUBROUTINE_PREFIX_LEN 9
 149 static inline const char *
 150 _mesa_shader_stage_to_subroutine_prefix(gl_shader_stage stage)
 151 {
 152   switch (stage) {
 153   case MESA_SHADER_VERTEX:
 154     return "__subu_v";
 155   case MESA_SHADER_GEOMETRY:
 156     return "__subu_g";
 157   case MESA_SHADER_FRAGMENT:
 158     return "__subu_f";
 159   case MESA_SHADER_COMPUTE:
 160     return "__subu_c";
 161   case MESA_SHADER_TESS_CTRL:
 162     return "__subu_t";
 163   case MESA_SHADER_TESS_EVAL:
 164     return "__subu_e";
 165   default:
 166     return NULL;
 167   }
 168 }
 169
 170 static inline gl_shader_stage
 171 _mesa_shader_stage_from_subroutine_uniform(GLenum subuniform)
 172 {
 173    switch (subuniform) {
 174    case GL_VERTEX_SUBROUTINE_UNIFORM:
 175       return MESA_SHADER_VERTEX;
 176    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 177       return MESA_SHADER_GEOMETRY;
 178    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 179       return MESA_SHADER_FRAGMENT;
 180    case GL_COMPUTE_SUBROUTINE_UNIFORM:
 181       return MESA_SHADER_COMPUTE;
 182    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 183       return MESA_SHADER_TESS_CTRL;
 184    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
 185       return MESA_SHADER_TESS_EVAL;
 186    }
 187    unreachable("not reached");
 188 }
 189
 190 static inline gl_shader_stage
 191 _mesa_shader_stage_from_subroutine(GLenum subroutine)
 192 {
 193    switch (subroutine) {
 194    case GL_VERTEX_SUBROUTINE:
 195       return MESA_SHADER_VERTEX;
 196    case GL_GEOMETRY_SUBROUTINE:
 197       return MESA_SHADER_GEOMETRY;
 198    case GL_FRAGMENT_SUBROUTINE:
 199       return MESA_SHADER_FRAGMENT;
 200    case GL_COMPUTE_SUBROUTINE:
 201       return MESA_SHADER_COMPUTE;
 202    case GL_TESS_CONTROL_SUBROUTINE:
 203       return MESA_SHADER_TESS_CTRL;
 204    case GL_TESS_EVALUATION_SUBROUTINE:
 205       return MESA_SHADER_TESS_EVAL;
 206    }
 207    unreachable("not reached");
 208 }
 209
 210 static inline GLenum
 211 _mesa_shader_stage_to_subroutine(gl_shader_stage stage)
 212 {
 213    switch (stage) {
 214    case MESA_SHADER_VERTEX:
 215       return GL_VERTEX_SUBROUTINE;
 216    case MESA_SHADER_GEOMETRY:
 217       return GL_GEOMETRY_SUBROUTINE;
 218    case MESA_SHADER_FRAGMENT:
 219       return GL_FRAGMENT_SUBROUTINE;
 220    case MESA_SHADER_COMPUTE:
 221       return GL_COMPUTE_SUBROUTINE;
 222    case MESA_SHADER_TESS_CTRL:
 223       return GL_TESS_CONTROL_SUBROUTINE;
 224    case MESA_SHADER_TESS_EVAL:
 225       return GL_TESS_EVALUATION_SUBROUTINE;
 226    case MESA_SHADER_NONE:
 227       break;
 228    case MESA_SHADER_KERNEL:
 229       unreachable("not reached");
 230       break;
 231    }
 232    unreachable("not reached");
 233 }
 234
 235 static inline GLenum
 236 _mesa_shader_stage_to_subroutine_uniform(gl_shader_stage stage)
 237 {
 238    switch (stage) {
 239    case MESA_SHADER_VERTEX:
 240       return GL_VERTEX_SUBROUTINE_UNIFORM;
 241    case MESA_SHADER_GEOMETRY:
 242       return GL_GEOMETRY_SUBROUTINE_UNIFORM;
 243    case MESA_SHADER_FRAGMENT:
 244       return GL_FRAGMENT_SUBROUTINE_UNIFORM;
 245    case MESA_SHADER_COMPUTE:
 246       return GL_COMPUTE_SUBROUTINE_UNIFORM;
 247    case MESA_SHADER_TESS_CTRL:
 248       return GL_TESS_CONTROL_SUBROUTINE_UNIFORM;
 249    case MESA_SHADER_TESS_EVAL:
 250       return GL_TESS_EVALUATION_SUBROUTINE_UNIFORM;
 251    case MESA_SHADER_NONE:
 252    case MESA_SHADER_KERNEL:
 253       break;
 254    }
 255    unreachable("not reached");
 256 }
 257
 258 extern bool
 259 _mesa_validate_pipeline_io(struct gl_pipeline_object *);
 260
 261 #ifdef __cplusplus
 262 }
 263 #endif
 264
 265 #endif /* SHADEROBJ_H */