2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR 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
46 /* for GL_ARB_v_p and GL_ARB_f_p SWZ instruction */
51 #define SWIZZLE_ZERO 4 /* keep these values together: KW */
52 #define SWIZZLE_ONE 5 /* keep these values together: KW */
55 extern struct program _mesa_DummyProgram;
63 _mesa_init_program(GLcontext *ctx);
66 _mesa_free_program_data(GLcontext *ctx);
69 _mesa_set_program_error(GLcontext *ctx, GLint pos, const char *string);
71 extern const GLubyte *
72 _mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
73 GLint *line, GLint *col);
76 extern struct program *
77 _mesa_init_vertex_program( GLcontext *ctx,
78 struct vertex_program *prog,
82 extern struct program *
83 _mesa_init_fragment_program( GLcontext *ctx,
84 struct fragment_program *prog,
88 extern struct program *
89 _mesa_new_program(GLcontext *ctx, GLenum target, GLuint id);
92 _mesa_delete_program(GLcontext *ctx, struct program *prog);
97 * Used for describing GL state referenced from inside ARB vertex and
99 * A string such as "state.light[0].ambient" gets translated into a
100 * sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ].
106 STATE_LIGHTMODEL_AMBIENT,
107 STATE_LIGHTMODEL_SCENECOLOR,
118 STATE_POINT_ATTENUATION,
126 STATE_MATRIX_INVERSE,
127 STATE_MATRIX_TRANSPOSE,
128 STATE_MATRIX_INVTRANS,
139 STATE_SPOT_DIRECTION,
145 STATE_TEXGEN_OBJECT_S,
146 STATE_TEXGEN_OBJECT_T,
147 STATE_TEXGEN_OBJECT_R,
148 STATE_TEXGEN_OBJECT_Q,
154 STATE_VERTEX_PROGRAM,
155 STATE_FRAGMENT_PROGRAM,
164 * Named program parameters
165 * Used for NV_fragment_program "DEFINE"d constants and "DECLARE"d parameters,
166 * and ARB_fragment_program global state references. For the later, Name
167 * might be "state.light[0].diffuse", for example.
178 struct program_parameter
180 const char *Name; /* Null-terminated */
181 enum parameter_type Type;
182 enum state_index StateIndexes[6]; /* Global state reference */
187 struct program_parameter_list
189 GLuint NumParameters;
190 struct program_parameter *Parameters;
195 * Program parameter functions
198 extern struct program_parameter_list *
199 _mesa_new_parameter_list(void);
202 _mesa_free_parameter_list(struct program_parameter_list *paramList);
205 _mesa_free_parameters(struct program_parameter_list *paramList);
208 _mesa_add_named_parameter(struct program_parameter_list *paramList,
209 const char *name, const GLfloat values[4]);
212 _mesa_add_named_constant(struct program_parameter_list *paramList,
213 const char *name, const GLfloat values[4]);
216 _mesa_add_unnamed_constant(struct program_parameter_list *paramList,
217 const GLfloat values[4]);
220 _mesa_add_state_reference(struct program_parameter_list *paramList,
224 _mesa_lookup_parameter_value(struct program_parameter_list *paramList,
225 GLsizei nameLen, const char *name);
228 _mesa_lookup_parameter_index(struct program_parameter_list *paramList,
229 GLsizei nameLen, const char *name);
232 _mesa_load_state_parameters(GLcontext *ctx,
233 struct program_parameter_list *paramList);
240 extern void GLAPIENTRY
241 _mesa_BindProgram(GLenum target, GLuint id);
243 extern void GLAPIENTRY
244 _mesa_DeletePrograms(GLsizei n, const GLuint *ids);
246 extern void GLAPIENTRY
247 _mesa_GenPrograms(GLsizei n, GLuint *ids);
249 extern GLboolean GLAPIENTRY
250 _mesa_IsProgram(GLuint id);
255 * GL_MESA_program_debug
259 _mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
263 _mesa_GetProgramRegisterfvMESA(GLenum target, GLsizei len,
264 const GLubyte *registerName, GLfloat *v);
267 #endif /* PROGRAM_H */