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
37extern "C" {
38#endif
39
40struct gl_shader_program_data;
41struct gl_linked_shader;
42struct dd_function_table;
43struct gl_pipeline_object;
44
45/**
46 * Internal functions
47 */
48
49extern void
50_mesa_init_shader_state(struct gl_context * ctx);
51
52extern void
53_mesa_free_shader_state(struct gl_context *ctx);
54
55
56extern void
57_mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
58                       struct gl_shader *sh);
59
60extern struct gl_shader *
61_mesa_lookup_shader(struct gl_context *ctx, GLuint name);
62
63extern struct gl_shader *
64_mesa_lookup_shader_err(struct gl_context *ctx, GLuint name, const char *caller);
65
66
67
68extern void
69_mesa_reference_shader_program_(struct gl_context *ctx,
70                               struct gl_shader_program **ptr,
71                               struct gl_shader_program *shProg);
72
73void
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
78static 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
87extern struct gl_shader *
88_mesa_new_shader(GLuint name, gl_shader_stage type);
89
90extern void
91_mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh);
92
93extern void
94_mesa_delete_linked_shader(struct gl_context *ctx,
95                           struct gl_linked_shader *sh);
96
97extern struct gl_shader_program *
98_mesa_lookup_shader_program(struct gl_context *ctx, GLuint name);
99
100extern struct gl_shader_program *
101_mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,
102                                const char *caller);
103
104extern struct gl_shader_program *
105_mesa_new_shader_program(GLuint name);
106
107extern struct gl_shader_program_data *
108_mesa_create_shader_program_data(void);
109
110extern void
111_mesa_clear_shader_program_data(struct gl_context *ctx,
112                                struct gl_shader_program *shProg);
113
114extern void
115_mesa_free_shader_program_data(struct gl_context *ctx,
116                               struct gl_shader_program *shProg);
117
118extern void
119_mesa_delete_shader_program(struct gl_context *ctx,
120                            struct gl_shader_program *shProg);
121
122
123extern void
124_mesa_init_shader_object_functions(struct dd_function_table *driver);
125
126static 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
149static 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
170static 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
190static 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
210static 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
235static 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
258extern bool
259_mesa_validate_pipeline_io(struct gl_pipeline_object *);
260
261#ifdef __cplusplus
262}
263#endif
264
265#endif /* SHADEROBJ_H */
266