1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2007 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 * \file program.c
27 * Vertex and fragment program support functions.
28 * \author Brian Paul
29 */
30
31
32 /**
33 * \mainpage Mesa vertex and fragment program module
34 *
35 * This module or directory contains most of the code for vertex and
36 * fragment programs and shaders, including state management, parsers,
37 * and (some) software routines for executing programs
38 */
39
40 #ifndef PROGRAM_H
41 #define PROGRAM_H
42
43 #include "main/compiler.h"
44 #include "main/mtypes.h"
45
46
47 #ifdef __cplusplus
48 extern "C" {
49 #endif
50
51 extern struct gl_program _mesa_DummyProgram;
52
53
54 extern void
55 _mesa_init_program(struct gl_context *ctx);
56
57 extern void
58 _mesa_free_program_data(struct gl_context *ctx);
59
60 extern void
61 _mesa_update_default_objects_program(struct gl_context *ctx);
62
63 extern void
64 _mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string);
65
66 extern struct gl_program *
67 _mesa_init_gl_program(struct gl_program *prog, GLenum target, GLuint id,
68 bool is_arb_asm);
69
70 extern struct gl_program *
71 _mesa_new_program(struct gl_context *ctx, GLenum target, GLuint id,
72 bool is_arb_asm);
73
74 extern void
75 _mesa_delete_program(struct gl_context *ctx, struct gl_program *prog);
76
77 extern struct gl_program *
78 _mesa_lookup_program(struct gl_context *ctx, GLuint id);
79
80 extern void
81 _mesa_reference_program_(struct gl_context *ctx,
82 struct gl_program **ptr,
83 struct gl_program *prog);
84
85 static inline void
_mesa_reference_program(struct gl_context * ctx,struct gl_program ** ptr,struct gl_program * prog)86 _mesa_reference_program(struct gl_context *ctx,
87 struct gl_program **ptr,
88 struct gl_program *prog)
89 {
90 if (*ptr != prog)
91 _mesa_reference_program_(ctx, ptr, prog);
92 }
93
94 extern GLboolean
95 _mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count);
96
97 extern GLboolean
98 _mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count,
99 void *mem_ctx);
100
101 extern void
102 _mesa_find_used_registers(const struct gl_program *prog,
103 gl_register_file file,
104 GLboolean used[], GLuint usedSize);
105
106 extern GLint
107 _mesa_find_free_register(const GLboolean used[],
108 GLuint maxRegs, GLuint firstReg);
109
110 extern GLint
111 _mesa_get_min_invocations_per_fragment(struct gl_context *ctx,
112 const struct gl_program *prog,
113 bool ignore_sample_qualifier);
114
115 static inline GLuint
_mesa_program_enum_to_shader_stage(GLenum v)116 _mesa_program_enum_to_shader_stage(GLenum v)
117 {
118 switch (v) {
119 case GL_VERTEX_PROGRAM_ARB:
120 return MESA_SHADER_VERTEX;
121 case GL_FRAGMENT_PROGRAM_ARB:
122 return MESA_SHADER_FRAGMENT;
123 case GL_FRAGMENT_SHADER_ATI:
124 return MESA_SHADER_FRAGMENT;
125 case GL_GEOMETRY_PROGRAM_NV:
126 return MESA_SHADER_GEOMETRY;
127 case GL_TESS_CONTROL_PROGRAM_NV:
128 return MESA_SHADER_TESS_CTRL;
129 case GL_TESS_EVALUATION_PROGRAM_NV:
130 return MESA_SHADER_TESS_EVAL;
131 case GL_COMPUTE_PROGRAM_NV:
132 return MESA_SHADER_COMPUTE;
133 default:
134 assert(0);
135 return ~0;
136 }
137 }
138
139
140 static inline GLenum
_mesa_shader_stage_to_program(unsigned stage)141 _mesa_shader_stage_to_program(unsigned stage)
142 {
143 switch (stage) {
144 case MESA_SHADER_VERTEX:
145 return GL_VERTEX_PROGRAM_ARB;
146 case MESA_SHADER_FRAGMENT:
147 return GL_FRAGMENT_PROGRAM_ARB;
148 case MESA_SHADER_GEOMETRY:
149 return GL_GEOMETRY_PROGRAM_NV;
150 case MESA_SHADER_TESS_CTRL:
151 return GL_TESS_CONTROL_PROGRAM_NV;
152 case MESA_SHADER_TESS_EVAL:
153 return GL_TESS_EVALUATION_PROGRAM_NV;
154 case MESA_SHADER_COMPUTE:
155 return GL_COMPUTE_PROGRAM_NV;
156 }
157
158 assert(!"Unexpected shader stage in _mesa_shader_stage_to_program");
159 return GL_VERTEX_PROGRAM_ARB;
160 }
161
162 #ifdef __cplusplus
163 } /* extern "C" */
164 #endif
165
166 #endif /* PROGRAM_H */
167