2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2005 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,
79 GLenum target, GLuint id);
81 extern struct program *
82 _mesa_init_fragment_program(GLcontext *ctx,
83 struct fragment_program *prog,
84 GLenum target, GLuint id);
86 extern struct program *
87 _mesa_init_ati_fragment_shader(GLcontext *ctx,
88 struct ati_fragment_shader *prog,
89 GLenum target, GLuint id );
91 extern struct program *
92 _mesa_new_program(GLcontext *ctx, GLenum target, GLuint id);
95 _mesa_delete_program(GLcontext *ctx, struct program *prog);
100 * Used for describing GL state referenced from inside ARB vertex and
102 * A string such as "state.light[0].ambient" gets translated into a
103 * sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ].
109 STATE_LIGHTMODEL_AMBIENT,
110 STATE_LIGHTMODEL_SCENECOLOR,
121 STATE_POINT_ATTENUATION,
129 STATE_MATRIX_INVERSE,
130 STATE_MATRIX_TRANSPOSE,
131 STATE_MATRIX_INVTRANS,
142 STATE_SPOT_DIRECTION,
148 STATE_TEXGEN_OBJECT_S,
149 STATE_TEXGEN_OBJECT_T,
150 STATE_TEXGEN_OBJECT_R,
151 STATE_TEXGEN_OBJECT_Q,
157 STATE_VERTEX_PROGRAM,
158 STATE_FRAGMENT_PROGRAM,
167 * Named program parameters
168 * Used for NV_fragment_program "DEFINE"d constants and "DECLARE"d parameters,
169 * and ARB_fragment_program global state references. For the later, Name
170 * might be "state.light[0].diffuse", for example.
181 struct program_parameter
183 const char *Name; /* Null-terminated */
184 enum parameter_type Type;
185 enum state_index StateIndexes[6]; /* Global state reference */
190 struct program_parameter_list
192 GLuint NumParameters;
193 struct program_parameter *Parameters;
198 * Program parameter functions
201 extern struct program_parameter_list *
202 _mesa_new_parameter_list(void);
205 _mesa_free_parameter_list(struct program_parameter_list *paramList);
208 _mesa_free_parameters(struct program_parameter_list *paramList);
211 _mesa_add_named_parameter(struct program_parameter_list *paramList,
212 const char *name, const GLfloat values[4]);
215 _mesa_add_named_constant(struct program_parameter_list *paramList,
216 const char *name, const GLfloat values[4]);
219 _mesa_add_unnamed_constant(struct program_parameter_list *paramList,
220 const GLfloat values[4]);
223 _mesa_add_state_reference(struct program_parameter_list *paramList,
227 _mesa_lookup_parameter_value(struct program_parameter_list *paramList,
228 GLsizei nameLen, const char *name);
231 _mesa_lookup_parameter_index(struct program_parameter_list *paramList,
232 GLsizei nameLen, const char *name);
235 _mesa_load_state_parameters(GLcontext *ctx,
236 struct program_parameter_list *paramList);
243 extern void GLAPIENTRY
244 _mesa_BindProgram(GLenum target, GLuint id);
246 extern void GLAPIENTRY
247 _mesa_DeletePrograms(GLsizei n, const GLuint *ids);
249 extern void GLAPIENTRY
250 _mesa_GenPrograms(GLsizei n, GLuint *ids);
252 extern GLboolean GLAPIENTRY
253 _mesa_IsProgram(GLuint id);
258 * GL_MESA_program_debug
262 _mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
266 _mesa_GetProgramRegisterfvMESA(GLenum target, GLsizei len,
267 const GLubyte *registerName, GLfloat *v);
270 #endif /* PROGRAM_H */