2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * glTexGen-related functions
33 #include "main/glheader.h"
34 #include "main/context.h"
35 #include "main/enums.h"
36 #include "main/macros.h"
37 #include "main/mfeatures.h"
38 #include "main/texgen.h"
39 #include "main/texstate.h"
40 #include "math/m_matrix.h"
41 #include "main/dispatch.h"
48 * Return texgen state for given coordinate
50 static struct gl_texgen
*
51 get_texgen(struct gl_texture_unit
*texUnit
, GLenum coord
)
55 return &texUnit
->GenS
;
57 return &texUnit
->GenT
;
59 return &texUnit
->GenR
;
61 return &texUnit
->GenQ
;
69 _mesa_TexGenfv( GLenum coord
, GLenum pname
, const GLfloat
*params
)
71 struct gl_texture_unit
*texUnit
;
72 struct gl_texgen
*texgen
;
73 GET_CURRENT_CONTEXT(ctx
);
74 ASSERT_OUTSIDE_BEGIN_END(ctx
);
76 if (MESA_VERBOSE
&(VERBOSE_API
|VERBOSE_TEXTURE
))
77 _mesa_debug(ctx
, "glTexGen %s %s %.1f(%s)...\n",
78 _mesa_lookup_enum_by_nr(coord
),
79 _mesa_lookup_enum_by_nr(pname
),
81 _mesa_lookup_enum_by_nr((GLenum
) (GLint
) *params
));
83 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
84 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glTexGen(current unit)");
88 texUnit
= _mesa_get_current_tex_unit(ctx
);
90 texgen
= get_texgen(texUnit
, coord
);
92 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexGen(coord)");
97 case GL_TEXTURE_GEN_MODE
:
99 GLenum mode
= (GLenum
) (GLint
) params
[0];
100 GLbitfield bit
= 0x0;
101 if (texgen
->Mode
== mode
)
104 case GL_OBJECT_LINEAR
:
105 bit
= TEXGEN_OBJ_LINEAR
;
108 bit
= TEXGEN_EYE_LINEAR
;
111 if (coord
== GL_S
|| coord
== GL_T
)
112 bit
= TEXGEN_SPHERE_MAP
;
114 case GL_REFLECTION_MAP_NV
:
116 bit
= TEXGEN_REFLECTION_MAP_NV
;
118 case GL_NORMAL_MAP_NV
:
120 bit
= TEXGEN_NORMAL_MAP_NV
;
126 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGenfv(param)" );
129 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
131 texgen
->_ModeBit
= bit
;
135 case GL_OBJECT_PLANE
:
137 if (TEST_EQ_4V(texgen
->ObjectPlane
, params
))
139 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
140 COPY_4FV(texgen
->ObjectPlane
, params
);
147 /* Transform plane equation by the inverse modelview matrix */
148 if (_math_matrix_is_dirty(ctx
->ModelviewMatrixStack
.Top
)) {
149 _math_matrix_analyse(ctx
->ModelviewMatrixStack
.Top
);
151 _mesa_transform_vector(tmp
, params
,
152 ctx
->ModelviewMatrixStack
.Top
->inv
);
153 if (TEST_EQ_4V(texgen
->EyePlane
, tmp
))
155 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
156 COPY_4FV(texgen
->EyePlane
, tmp
);
161 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGenfv(pname)" );
165 if (ctx
->Driver
.TexGen
)
166 ctx
->Driver
.TexGen( ctx
, coord
, pname
, params
);
170 static void GLAPIENTRY
171 _mesa_TexGeniv(GLenum coord
, GLenum pname
, const GLint
*params
)
174 p
[0] = (GLfloat
) params
[0];
175 if (pname
== GL_TEXTURE_GEN_MODE
) {
176 p
[1] = p
[2] = p
[3] = 0.0F
;
179 p
[1] = (GLfloat
) params
[1];
180 p
[2] = (GLfloat
) params
[2];
181 p
[3] = (GLfloat
) params
[3];
183 _mesa_TexGenfv(coord
, pname
, p
);
187 static void GLAPIENTRY
188 _mesa_TexGend(GLenum coord
, GLenum pname
, GLdouble param
)
191 p
[0] = (GLfloat
) param
;
192 p
[1] = p
[2] = p
[3] = 0.0F
;
193 _mesa_TexGenfv( coord
, pname
, p
);
199 _es_GetTexGenfv(GLenum coord
, GLenum pname
, GLfloat
*params
)
201 ASSERT(coord
== GL_TEXTURE_GEN_STR_OES
);
202 _mesa_GetTexGenfv(GL_S
, pname
, params
);
207 _es_TexGenf(GLenum coord
, GLenum pname
, GLfloat param
)
209 ASSERT(coord
== GL_TEXTURE_GEN_STR_OES
);
210 /* set S, T, and R at the same time */
211 _mesa_TexGenf(GL_S
, pname
, param
);
212 _mesa_TexGenf(GL_T
, pname
, param
);
213 _mesa_TexGenf(GL_R
, pname
, param
);
218 _es_TexGenfv(GLenum coord
, GLenum pname
, const GLfloat
*params
)
220 ASSERT(coord
== GL_TEXTURE_GEN_STR_OES
);
221 /* set S, T, and R at the same time */
222 _mesa_TexGenfv(GL_S
, pname
, params
);
223 _mesa_TexGenfv(GL_T
, pname
, params
);
224 _mesa_TexGenfv(GL_R
, pname
, params
);
229 static void GLAPIENTRY
230 _mesa_TexGendv(GLenum coord
, GLenum pname
, const GLdouble
*params
)
233 p
[0] = (GLfloat
) params
[0];
234 if (pname
== GL_TEXTURE_GEN_MODE
) {
235 p
[1] = p
[2] = p
[3] = 0.0F
;
238 p
[1] = (GLfloat
) params
[1];
239 p
[2] = (GLfloat
) params
[2];
240 p
[3] = (GLfloat
) params
[3];
242 _mesa_TexGenfv( coord
, pname
, p
);
247 _mesa_TexGenf( GLenum coord
, GLenum pname
, GLfloat param
)
251 p
[1] = p
[2] = p
[3] = 0.0F
;
252 _mesa_TexGenfv(coord
, pname
, p
);
257 _mesa_TexGeni( GLenum coord
, GLenum pname
, GLint param
)
261 p
[1] = p
[2] = p
[3] = 0;
262 _mesa_TexGeniv( coord
, pname
, p
);
267 static void GLAPIENTRY
268 _mesa_GetTexGendv( GLenum coord
, GLenum pname
, GLdouble
*params
)
270 struct gl_texture_unit
*texUnit
;
271 struct gl_texgen
*texgen
;
272 GET_CURRENT_CONTEXT(ctx
);
273 ASSERT_OUTSIDE_BEGIN_END(ctx
);
275 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
276 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetTexGendv(current unit)");
280 texUnit
= _mesa_get_current_tex_unit(ctx
);
282 texgen
= get_texgen(texUnit
, coord
);
284 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetTexGendv(coord)");
289 case GL_TEXTURE_GEN_MODE
:
290 params
[0] = ENUM_TO_DOUBLE(texgen
->Mode
);
292 case GL_OBJECT_PLANE
:
293 COPY_4V(params
, texgen
->ObjectPlane
);
296 COPY_4V(params
, texgen
->EyePlane
);
299 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGendv(pname)" );
306 _mesa_GetTexGenfv( GLenum coord
, GLenum pname
, GLfloat
*params
)
308 struct gl_texture_unit
*texUnit
;
309 struct gl_texgen
*texgen
;
310 GET_CURRENT_CONTEXT(ctx
);
311 ASSERT_OUTSIDE_BEGIN_END(ctx
);
313 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
314 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetTexGenfv(current unit)");
318 texUnit
= _mesa_get_current_tex_unit(ctx
);
320 texgen
= get_texgen(texUnit
, coord
);
322 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetTexGenfv(coord)");
327 case GL_TEXTURE_GEN_MODE
:
328 params
[0] = ENUM_TO_FLOAT(texgen
->Mode
);
330 case GL_OBJECT_PLANE
:
331 COPY_4V(params
, texgen
->ObjectPlane
);
334 COPY_4V(params
, texgen
->EyePlane
);
337 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGenfv(pname)" );
343 static void GLAPIENTRY
344 _mesa_GetTexGeniv( GLenum coord
, GLenum pname
, GLint
*params
)
346 struct gl_texture_unit
*texUnit
;
347 struct gl_texgen
*texgen
;
348 GET_CURRENT_CONTEXT(ctx
);
349 ASSERT_OUTSIDE_BEGIN_END(ctx
);
351 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
352 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetTexGeniv(current unit)");
356 texUnit
= _mesa_get_current_tex_unit(ctx
);
358 texgen
= get_texgen(texUnit
, coord
);
360 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetTexGeniv(coord)");
365 case GL_TEXTURE_GEN_MODE
:
366 params
[0] = texgen
->Mode
;
368 case GL_OBJECT_PLANE
:
369 params
[0] = (GLint
) texgen
->ObjectPlane
[0];
370 params
[1] = (GLint
) texgen
->ObjectPlane
[1];
371 params
[2] = (GLint
) texgen
->ObjectPlane
[2];
372 params
[3] = (GLint
) texgen
->ObjectPlane
[3];
375 params
[0] = (GLint
) texgen
->EyePlane
[0];
376 params
[1] = (GLint
) texgen
->EyePlane
[1];
377 params
[2] = (GLint
) texgen
->EyePlane
[2];
378 params
[3] = (GLint
) texgen
->EyePlane
[3];
381 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGeniv(pname)" );
387 _mesa_init_texgen_dispatch(struct _glapi_table
*disp
)
389 SET_GetTexGendv(disp
, _mesa_GetTexGendv
);
390 SET_GetTexGenfv(disp
, _mesa_GetTexGenfv
);
391 SET_GetTexGeniv(disp
, _mesa_GetTexGeniv
);
392 SET_TexGend(disp
, _mesa_TexGend
);
393 SET_TexGendv(disp
, _mesa_TexGendv
);
394 SET_TexGenf(disp
, _mesa_TexGenf
);
395 SET_TexGenfv(disp
, _mesa_TexGenfv
);
396 SET_TexGeni(disp
, _mesa_TexGeni
);
397 SET_TexGeniv(disp
, _mesa_TexGeniv
);
401 #endif /* FEATURE_texgen */