2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
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.
27 * Vertex and fragment program support functions.
33 * \mainpage Mesa vertex and fragment program module
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
43 #include "main/compiler.h"
44 #include "main/mtypes.h"
51 extern struct gl_program _mesa_DummyProgram
;
55 _mesa_init_program(struct gl_context
*ctx
);
58 _mesa_free_program_data(struct gl_context
*ctx
);
61 _mesa_update_default_objects_program(struct gl_context
*ctx
);
64 _mesa_set_program_error(struct gl_context
*ctx
, GLint pos
, const char *string
);
66 extern const GLubyte
*
67 _mesa_find_line_column(const GLubyte
*string
, const GLubyte
*pos
,
68 GLint
*line
, GLint
*col
);
71 extern struct gl_program
*
72 _mesa_init_vertex_program(struct gl_context
*ctx
,
73 struct gl_vertex_program
*prog
,
74 GLenum target
, GLuint id
);
76 extern struct gl_program
*
77 _mesa_init_fragment_program(struct gl_context
*ctx
,
78 struct gl_fragment_program
*prog
,
79 GLenum target
, GLuint id
);
81 extern struct gl_program
*
82 _mesa_init_geometry_program(struct gl_context
*ctx
,
83 struct gl_geometry_program
*prog
,
84 GLenum target
, GLuint id
);
86 extern struct gl_program
*
87 _mesa_new_program(struct gl_context
*ctx
, GLenum target
, GLuint id
);
90 _mesa_delete_program(struct gl_context
*ctx
, struct gl_program
*prog
);
92 extern struct gl_program
*
93 _mesa_lookup_program(struct gl_context
*ctx
, GLuint id
);
96 _mesa_reference_program_(struct gl_context
*ctx
,
97 struct gl_program
**ptr
,
98 struct gl_program
*prog
);
101 _mesa_reference_program(struct gl_context
*ctx
,
102 struct gl_program
**ptr
,
103 struct gl_program
*prog
)
106 _mesa_reference_program_(ctx
, ptr
, prog
);
110 _mesa_reference_vertprog(struct gl_context
*ctx
,
111 struct gl_vertex_program
**ptr
,
112 struct gl_vertex_program
*prog
)
114 _mesa_reference_program(ctx
, (struct gl_program
**) ptr
,
115 (struct gl_program
*) prog
);
119 _mesa_reference_fragprog(struct gl_context
*ctx
,
120 struct gl_fragment_program
**ptr
,
121 struct gl_fragment_program
*prog
)
123 _mesa_reference_program(ctx
, (struct gl_program
**) ptr
,
124 (struct gl_program
*) prog
);
128 _mesa_reference_geomprog(struct gl_context
*ctx
,
129 struct gl_geometry_program
**ptr
,
130 struct gl_geometry_program
*prog
)
132 _mesa_reference_program(ctx
, (struct gl_program
**) ptr
,
133 (struct gl_program
*) prog
);
136 extern struct gl_program
*
137 _mesa_clone_program(struct gl_context
*ctx
, const struct gl_program
*prog
);
139 static inline struct gl_vertex_program
*
140 _mesa_clone_vertex_program(struct gl_context
*ctx
,
141 const struct gl_vertex_program
*prog
)
143 return (struct gl_vertex_program
*) _mesa_clone_program(ctx
, &prog
->Base
);
146 static inline struct gl_geometry_program
*
147 _mesa_clone_geometry_program(struct gl_context
*ctx
,
148 const struct gl_geometry_program
*prog
)
150 return (struct gl_geometry_program
*) _mesa_clone_program(ctx
, &prog
->Base
);
153 static inline struct gl_fragment_program
*
154 _mesa_clone_fragment_program(struct gl_context
*ctx
,
155 const struct gl_fragment_program
*prog
)
157 return (struct gl_fragment_program
*) _mesa_clone_program(ctx
, &prog
->Base
);
162 _mesa_insert_instructions(struct gl_program
*prog
, GLuint start
, GLuint count
);
165 _mesa_delete_instructions(struct gl_program
*prog
, GLuint start
, GLuint count
);
167 extern struct gl_program
*
168 _mesa_combine_programs(struct gl_context
*ctx
,
169 const struct gl_program
*progA
,
170 const struct gl_program
*progB
);
173 _mesa_find_used_registers(const struct gl_program
*prog
,
174 gl_register_file file
,
175 GLboolean used
[], GLuint usedSize
);
178 _mesa_find_free_register(const GLboolean used
[],
179 GLuint maxRegs
, GLuint firstReg
);
183 _mesa_valid_register_index(const struct gl_context
*ctx
,
184 gl_shader_type shaderType
,
185 gl_register_file file
, GLint index
);
188 _mesa_postprocess_program(struct gl_context
*ctx
, struct gl_program
*prog
);
191 _mesa_get_min_invocations_per_fragment(struct gl_context
*ctx
,
192 const struct gl_fragment_program
*prog
);
195 _mesa_program_target_to_index(GLenum v
)
198 case GL_VERTEX_PROGRAM_ARB
:
199 return MESA_SHADER_VERTEX
;
200 case GL_FRAGMENT_PROGRAM_ARB
:
201 return MESA_SHADER_FRAGMENT
;
202 case GL_GEOMETRY_PROGRAM_NV
:
203 return MESA_SHADER_GEOMETRY
;
211 _mesa_program_index_to_target(GLuint i
)
213 static const GLenum enums
[] = {
214 GL_VERTEX_PROGRAM_ARB
,
215 GL_GEOMETRY_PROGRAM_NV
,
216 GL_FRAGMENT_PROGRAM_ARB
218 STATIC_ASSERT(Elements(enums
) == MESA_SHADER_TYPES
);
219 if(i
>= MESA_SHADER_TYPES
)
226 /* Cast wrappers from gl_program to gl_vertex/geometry/fragment_program */
228 static inline struct gl_fragment_program
*
229 gl_fragment_program(struct gl_program
*prog
)
231 return (struct gl_fragment_program
*) prog
;
234 static inline const struct gl_fragment_program
*
235 gl_fragment_program_const(const struct gl_program
*prog
)
237 return (const struct gl_fragment_program
*) prog
;
241 static inline struct gl_vertex_program
*
242 gl_vertex_program(struct gl_program
*prog
)
244 return (struct gl_vertex_program
*) prog
;
247 static inline const struct gl_vertex_program
*
248 gl_vertex_program_const(const struct gl_program
*prog
)
250 return (const struct gl_vertex_program
*) prog
;
254 static inline struct gl_geometry_program
*
255 gl_geometry_program(struct gl_program
*prog
)
257 return (struct gl_geometry_program
*) prog
;
260 static inline const struct gl_geometry_program
*
261 gl_geometry_program_const(const struct gl_program
*prog
)
263 return (const struct gl_geometry_program
*) prog
;
271 #endif /* PROGRAM_H */