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