1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
|
/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file program.c
* Vertex and fragment program support functions.
* \author Brian Paul
*/
/**
* \mainpage Mesa vertex and fragment program module
*
* This module or directory contains most of the code for vertex and
* fragment programs and shaders, including state management, parsers,
* and (some) software routines for executing programs
*/
#ifndef PROGRAM_H
#define PROGRAM_H
#include "main/compiler.h"
#include "main/mtypes.h"
#ifdef __cplusplus
extern "C" {
#endif
extern struct gl_program _mesa_DummyProgram;
extern void
_mesa_init_program(struct gl_context *ctx);
extern void
_mesa_free_program_data(struct gl_context *ctx);
extern void
_mesa_update_default_objects_program(struct gl_context *ctx);
extern void
_mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string);
extern const GLubyte *
_mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
GLint *line, GLint *col);
extern struct gl_program *
_mesa_init_vertex_program(struct gl_context *ctx,
struct gl_vertex_program *prog,
GLenum target, GLuint id);
extern struct gl_program *
_mesa_init_fragment_program(struct gl_context *ctx,
struct gl_fragment_program *prog,
GLenum target, GLuint id);
extern struct gl_program *
_mesa_init_geometry_program(struct gl_context *ctx,
struct gl_geometry_program *prog,
GLenum target, GLuint id);
extern struct gl_program *
_mesa_new_program(struct gl_context *ctx, GLenum target, GLuint id);
extern void
_mesa_delete_program(struct gl_context *ctx, struct gl_program *prog);
extern struct gl_program *
_mesa_lookup_program(struct gl_context *ctx, GLuint id);
extern void
_mesa_reference_program_(struct gl_context *ctx,
struct gl_program **ptr,
struct gl_program *prog);
static inline void
_mesa_reference_program(struct gl_context *ctx,
struct gl_program **ptr,
struct gl_program *prog)
{
if (*ptr != prog)
_mesa_reference_program_(ctx, ptr, prog);
}
static inline void
_mesa_reference_vertprog(struct gl_context *ctx,
struct gl_vertex_program **ptr,
struct gl_vertex_program *prog)
{
_mesa_reference_program(ctx, (struct gl_program **) ptr,
(struct gl_program *) prog);
}
static inline void
_mesa_reference_fragprog(struct gl_context *ctx,
struct gl_fragment_program **ptr,
struct gl_fragment_program *prog)
{
_mesa_reference_program(ctx, (struct gl_program **) ptr,
(struct gl_program *) prog);
}
static inline void
_mesa_reference_geomprog(struct gl_context *ctx,
struct gl_geometry_program **ptr,
struct gl_geometry_program *prog)
{
_mesa_reference_program(ctx, (struct gl_program **) ptr,
(struct gl_program *) prog);
}
extern struct gl_program *
_mesa_clone_program(struct gl_context *ctx, const struct gl_program *prog);
static inline struct gl_vertex_program *
_mesa_clone_vertex_program(struct gl_context *ctx,
const struct gl_vertex_program *prog)
{
return (struct gl_vertex_program *) _mesa_clone_program(ctx, &prog->Base);
}
static inline struct gl_geometry_program *
_mesa_clone_geometry_program(struct gl_context *ctx,
const struct gl_geometry_program *prog)
{
return (struct gl_geometry_program *) _mesa_clone_program(ctx, &prog->Base);
}
static inline struct gl_fragment_program *
_mesa_clone_fragment_program(struct gl_context *ctx,
const struct gl_fragment_program *prog)
{
return (struct gl_fragment_program *) _mesa_clone_program(ctx, &prog->Base);
}
extern GLboolean
_mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count);
extern GLboolean
_mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count);
extern struct gl_program *
_mesa_combine_programs(struct gl_context *ctx,
const struct gl_program *progA,
const struct gl_program *progB);
extern void
_mesa_find_used_registers(const struct gl_program *prog,
gl_register_file file,
GLboolean used[], GLuint usedSize);
extern GLint
_mesa_find_free_register(const GLboolean used[],
GLuint maxRegs, GLuint firstReg);
extern GLboolean
_mesa_valid_register_index(const struct gl_context *ctx,
gl_shader_stage shaderType,
gl_register_file file, GLint index);
extern void
_mesa_postprocess_program(struct gl_context *ctx, struct gl_program *prog);
extern GLint
_mesa_get_min_invocations_per_fragment(struct gl_context *ctx,
const struct gl_fragment_program *prog,
bool ignore_sample_qualifier);
static inline GLuint
_mesa_program_enum_to_shader_stage(GLenum v)
{
switch (v) {
case GL_VERTEX_PROGRAM_ARB:
return MESA_SHADER_VERTEX;
case GL_FRAGMENT_PROGRAM_ARB:
return MESA_SHADER_FRAGMENT;
case GL_GEOMETRY_PROGRAM_NV:
return MESA_SHADER_GEOMETRY;
default:
ASSERT(0);
return ~0;
}
}
static inline GLenum
_mesa_shader_stage_to_program(unsigned stage)
{
switch (stage) {
case MESA_SHADER_VERTEX:
return GL_VERTEX_PROGRAM_ARB;
case MESA_SHADER_FRAGMENT:
return GL_FRAGMENT_PROGRAM_ARB;
case MESA_SHADER_GEOMETRY:
return GL_GEOMETRY_PROGRAM_NV;
}
assert(!"Unexpected shader stage in _mesa_shader_stage_to_program");
return GL_VERTEX_PROGRAM_ARB;
}
/* Cast wrappers from gl_program to gl_vertex/geometry/fragment_program */
static inline struct gl_fragment_program *
gl_fragment_program(struct gl_program *prog)
{
return (struct gl_fragment_program *) prog;
}
static inline const struct gl_fragment_program *
gl_fragment_program_const(const struct gl_program *prog)
{
return (const struct gl_fragment_program *) prog;
}
static inline struct gl_vertex_program *
gl_vertex_program(struct gl_program *prog)
{
return (struct gl_vertex_program *) prog;
}
static inline const struct gl_vertex_program *
gl_vertex_program_const(const struct gl_program *prog)
{
return (const struct gl_vertex_program *) prog;
}
static inline struct gl_geometry_program *
gl_geometry_program(struct gl_program *prog)
{
return (struct gl_geometry_program *) prog;
}
static inline const struct gl_geometry_program *
gl_geometry_program_const(const struct gl_program *prog)
{
return (const struct gl_geometry_program *) prog;
}
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* PROGRAM_H */
|
