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.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include "main/glheader.h"
38 #include "main/config.h"
39 #include "main/mfeatures.h"
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
42 #include "main/simple_list.h" /* struct simple_node */
43 #include "main/formats.h" /* MESA_FORMAT_COUNT */
47 * Stencil buffer data type.
50 typedef GLubyte GLstencil
;
51 #elif STENCIL_BITS==16
52 typedef GLushort GLstencil
;
54 # error "illegal number of stencil bits"
59 * \name 64-bit extension of GLbitfield.
62 typedef GLuint64 GLbitfield64
;
64 /** Set a single bit */
65 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
69 * \name Some forward type declarations
72 struct _mesa_HashTable
;
73 struct gl_attrib_node
;
74 struct gl_list_extensions
;
76 struct gl_pixelstore_attrib
;
77 struct gl_program_cache
;
78 struct gl_texture_format
;
79 struct gl_texture_image
;
80 struct gl_texture_object
;
86 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
87 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
88 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
89 #define PRIM_UNKNOWN (GL_POLYGON+3)
93 * Shader stages. Note that these will become 5 with tessellation.
94 * These MUST have the same values as gallium's PIPE_SHADER_*
98 MESA_SHADER_VERTEX
= 0,
99 MESA_SHADER_FRAGMENT
= 1,
100 MESA_SHADER_GEOMETRY
= 2,
101 MESA_SHADER_TYPES
= 3
107 * Indexes for vertex program attributes.
108 * GL_NV_vertex_program aliases generic attributes over the conventional
109 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
110 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
111 * generic attributes are distinct/separate).
116 VERT_ATTRIB_WEIGHT
= 1,
117 VERT_ATTRIB_NORMAL
= 2,
118 VERT_ATTRIB_COLOR0
= 3,
119 VERT_ATTRIB_COLOR1
= 4,
121 VERT_ATTRIB_COLOR_INDEX
= 6,
122 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
123 VERT_ATTRIB_EDGEFLAG
= 7,
124 VERT_ATTRIB_TEX0
= 8,
125 VERT_ATTRIB_TEX1
= 9,
126 VERT_ATTRIB_TEX2
= 10,
127 VERT_ATTRIB_TEX3
= 11,
128 VERT_ATTRIB_TEX4
= 12,
129 VERT_ATTRIB_TEX5
= 13,
130 VERT_ATTRIB_TEX6
= 14,
131 VERT_ATTRIB_TEX7
= 15,
132 VERT_ATTRIB_GENERIC0
= 16,
133 VERT_ATTRIB_GENERIC1
= 17,
134 VERT_ATTRIB_GENERIC2
= 18,
135 VERT_ATTRIB_GENERIC3
= 19,
136 VERT_ATTRIB_GENERIC4
= 20,
137 VERT_ATTRIB_GENERIC5
= 21,
138 VERT_ATTRIB_GENERIC6
= 22,
139 VERT_ATTRIB_GENERIC7
= 23,
140 VERT_ATTRIB_GENERIC8
= 24,
141 VERT_ATTRIB_GENERIC9
= 25,
142 VERT_ATTRIB_GENERIC10
= 26,
143 VERT_ATTRIB_GENERIC11
= 27,
144 VERT_ATTRIB_GENERIC12
= 28,
145 VERT_ATTRIB_GENERIC13
= 29,
146 VERT_ATTRIB_GENERIC14
= 30,
147 VERT_ATTRIB_GENERIC15
= 31,
152 * Bitflags for vertex attributes.
153 * These are used in bitfields in many places.
156 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
157 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
158 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
159 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
160 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
161 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
162 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
163 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
164 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
165 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
166 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
167 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
168 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
169 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
170 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
171 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
172 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
173 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
174 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
175 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
176 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
177 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
178 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
179 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
180 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
181 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
182 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
183 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
184 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
185 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
186 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
187 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
189 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
190 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
195 * Indexes for vertex program result attributes. Note that
196 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
197 * assumptions about the layout of this enum.
201 VERT_RESULT_HPOS
= 0,
202 VERT_RESULT_COL0
= 1,
203 VERT_RESULT_COL1
= 2,
204 VERT_RESULT_FOGC
= 3,
205 VERT_RESULT_TEX0
= 4,
206 VERT_RESULT_TEX1
= 5,
207 VERT_RESULT_TEX2
= 6,
208 VERT_RESULT_TEX3
= 7,
209 VERT_RESULT_TEX4
= 8,
210 VERT_RESULT_TEX5
= 9,
211 VERT_RESULT_TEX6
= 10,
212 VERT_RESULT_TEX7
= 11,
213 VERT_RESULT_PSIZ
= 12,
214 VERT_RESULT_BFC0
= 13,
215 VERT_RESULT_BFC1
= 14,
216 VERT_RESULT_EDGE
= 15,
217 VERT_RESULT_VAR0
= 16, /**< shader varying */
218 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
222 /*********************************************/
225 * Indexes for geometry program attributes.
229 GEOM_ATTRIB_POSITION
= 0,
230 GEOM_ATTRIB_COLOR0
= 1,
231 GEOM_ATTRIB_COLOR1
= 2,
232 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
233 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
234 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
235 GEOM_ATTRIB_POINT_SIZE
= 6,
236 GEOM_ATTRIB_CLIP_VERTEX
= 7,
237 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
238 GEOM_ATTRIB_TEX_COORD
= 9,
240 GEOM_ATTRIB_VAR0
= 16,
241 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
245 * Bitflags for geometry attributes.
246 * These are used in bitfields in many places.
249 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
250 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
251 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
252 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
253 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
254 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
255 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
256 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
257 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
258 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
259 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
261 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
266 * Indexes for geometry program result attributes
271 GEOM_RESULT_COL0
= 1,
272 GEOM_RESULT_COL1
= 2,
273 GEOM_RESULT_SCOL0
= 3,
274 GEOM_RESULT_SCOL1
= 4,
275 GEOM_RESULT_FOGC
= 5,
276 GEOM_RESULT_TEX0
= 6,
277 GEOM_RESULT_TEX1
= 7,
278 GEOM_RESULT_TEX2
= 8,
279 GEOM_RESULT_TEX3
= 9,
280 GEOM_RESULT_TEX4
= 10,
281 GEOM_RESULT_TEX5
= 11,
282 GEOM_RESULT_TEX6
= 12,
283 GEOM_RESULT_TEX7
= 13,
284 GEOM_RESULT_PSIZ
= 14,
285 GEOM_RESULT_CLPV
= 15,
286 GEOM_RESULT_PRID
= 16,
287 GEOM_RESULT_LAYR
= 17,
288 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
289 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
290 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
295 * Indexes for fragment program input attributes. Note that
296 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
297 * assumptions about the layout of this enum.
301 FRAG_ATTRIB_WPOS
= 0,
302 FRAG_ATTRIB_COL0
= 1,
303 FRAG_ATTRIB_COL1
= 2,
304 FRAG_ATTRIB_FOGC
= 3,
305 FRAG_ATTRIB_TEX0
= 4,
306 FRAG_ATTRIB_TEX1
= 5,
307 FRAG_ATTRIB_TEX2
= 6,
308 FRAG_ATTRIB_TEX3
= 7,
309 FRAG_ATTRIB_TEX4
= 8,
310 FRAG_ATTRIB_TEX5
= 9,
311 FRAG_ATTRIB_TEX6
= 10,
312 FRAG_ATTRIB_TEX7
= 11,
313 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
314 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
315 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
316 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
321 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
323 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
325 * gl_vert_result values which have no corresponding gl_frag_attrib
326 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
327 * VERT_RESULT_EDGE) are converted to a value of -1.
330 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result
)
332 if (vert_result
>= VERT_RESULT_VAR0
)
333 return vert_result
- VERT_RESULT_VAR0
+ FRAG_ATTRIB_VAR0
;
334 else if (vert_result
<= VERT_RESULT_TEX7
)
342 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
344 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
346 * gl_frag_attrib values which have no corresponding gl_vert_result
347 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
350 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib
)
352 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
354 else if (frag_attrib
>= FRAG_ATTRIB_VAR0
)
355 return frag_attrib
- FRAG_ATTRIB_VAR0
+ VERT_RESULT_VAR0
;
362 * Bitflags for fragment program input attributes.
365 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
366 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
367 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
368 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
369 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
370 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
371 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
372 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
373 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
374 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
375 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
376 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
377 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
378 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
379 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
381 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
382 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
384 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
396 * Fragment program results
400 FRAG_RESULT_DEPTH
= 0,
401 FRAG_RESULT_STENCIL
= 1,
402 /* If a single color should be written to all render targets, this
403 * register is written. No FRAG_RESULT_DATAn will be written.
405 FRAG_RESULT_COLOR
= 2,
407 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
408 * or ARB_fragment_program fragment.color[n]) color results. If
409 * any are written, FRAG_RESULT_COLOR will not be written.
411 FRAG_RESULT_DATA0
= 3,
412 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
417 * Indexes for all renderbuffers
421 /* the four standard color buffers */
429 /* optional aux buffer */
431 /* generic renderbuffers */
444 * Bit flags for all renderbuffers
446 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
447 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
448 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
449 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
450 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
451 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
452 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
453 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
454 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
455 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
456 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
457 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
458 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
459 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
460 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
461 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
462 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
463 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
464 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
467 * Mask of all the color buffer bits (but not accum).
469 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
470 BUFFER_BIT_BACK_LEFT | \
471 BUFFER_BIT_FRONT_RIGHT | \
472 BUFFER_BIT_BACK_RIGHT | \
474 BUFFER_BIT_COLOR0 | \
475 BUFFER_BIT_COLOR1 | \
476 BUFFER_BIT_COLOR2 | \
477 BUFFER_BIT_COLOR3 | \
478 BUFFER_BIT_COLOR4 | \
479 BUFFER_BIT_COLOR5 | \
480 BUFFER_BIT_COLOR6 | \
485 * Framebuffer configuration (aka visual / pixelformat)
486 * Note: some of these fields should be boolean, but it appears that
487 * code in drivers/dri/common/util.c requires int-sized fields.
493 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
494 GLuint doubleBufferMode
;
497 GLboolean haveAccumBuffer
;
498 GLboolean haveDepthBuffer
;
499 GLboolean haveStencilBuffer
;
501 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
502 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
503 GLint rgbBits
; /* total bits for rgb */
504 GLint indexBits
; /* total bits for colorindex */
506 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
514 /* EXT_visual_rating / GLX 1.2 */
517 /* EXT_visual_info / GLX 1.2 */
518 GLint transparentPixel
;
519 /* colors are floats scaled to ints */
520 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
521 GLint transparentIndex
;
523 /* ARB_multisample / SGIS_multisample */
527 /* SGIX_pbuffer / GLX 1.3 */
528 GLint maxPbufferWidth
;
529 GLint maxPbufferHeight
;
530 GLint maxPbufferPixels
;
531 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
532 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
534 /* OML_swap_method */
537 /* EXT_texture_from_pixmap */
538 GLint bindToTextureRgb
;
539 GLint bindToTextureRgba
;
540 GLint bindToMipmapTexture
;
541 GLint bindToTextureTargets
;
544 /* EXT_framebuffer_sRGB */
550 * \name Bit flags used for updating material values.
553 #define MAT_ATTRIB_FRONT_AMBIENT 0
554 #define MAT_ATTRIB_BACK_AMBIENT 1
555 #define MAT_ATTRIB_FRONT_DIFFUSE 2
556 #define MAT_ATTRIB_BACK_DIFFUSE 3
557 #define MAT_ATTRIB_FRONT_SPECULAR 4
558 #define MAT_ATTRIB_BACK_SPECULAR 5
559 #define MAT_ATTRIB_FRONT_EMISSION 6
560 #define MAT_ATTRIB_BACK_EMISSION 7
561 #define MAT_ATTRIB_FRONT_SHININESS 8
562 #define MAT_ATTRIB_BACK_SHININESS 9
563 #define MAT_ATTRIB_FRONT_INDEXES 10
564 #define MAT_ATTRIB_BACK_INDEXES 11
565 #define MAT_ATTRIB_MAX 12
567 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
568 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
569 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
570 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
571 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
572 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
574 #define MAT_INDEX_AMBIENT 0
575 #define MAT_INDEX_DIFFUSE 1
576 #define MAT_INDEX_SPECULAR 2
578 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
579 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
580 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
581 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
582 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
583 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
584 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
585 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
586 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
587 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
588 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
589 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
592 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
593 MAT_BIT_FRONT_AMBIENT | \
594 MAT_BIT_FRONT_DIFFUSE | \
595 MAT_BIT_FRONT_SPECULAR | \
596 MAT_BIT_FRONT_SHININESS | \
597 MAT_BIT_FRONT_INDEXES)
599 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
600 MAT_BIT_BACK_AMBIENT | \
601 MAT_BIT_BACK_DIFFUSE | \
602 MAT_BIT_BACK_SPECULAR | \
603 MAT_BIT_BACK_SHININESS | \
604 MAT_BIT_BACK_INDEXES)
606 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
610 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
611 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
614 * Material shininess lookup table.
618 struct gl_shine_tab
*next
, *prev
;
619 GLfloat tab
[SHINE_TABLE_SIZE
+1];
626 * Light source state.
630 struct gl_light
*next
; /**< double linked list with sentinel */
631 struct gl_light
*prev
;
633 GLfloat Ambient
[4]; /**< ambient color */
634 GLfloat Diffuse
[4]; /**< diffuse color */
635 GLfloat Specular
[4]; /**< specular color */
636 GLfloat EyePosition
[4]; /**< position in eye coordinates */
637 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
638 GLfloat SpotExponent
;
639 GLfloat SpotCutoff
; /**< in degrees */
640 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
641 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
642 GLfloat ConstantAttenuation
;
643 GLfloat LinearAttenuation
;
644 GLfloat QuadraticAttenuation
;
645 GLboolean Enabled
; /**< On/off flag */
648 * \name Derived fields
651 GLbitfield _Flags
; /**< State */
653 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
654 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
655 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
656 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
657 GLfloat _VP_inf_spot_attenuation
;
659 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
660 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
661 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
662 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
663 GLfloat _dli
; /**< CI diffuse light intensity */
664 GLfloat _sli
; /**< CI specular light intensity */
674 GLfloat Ambient
[4]; /**< ambient color */
675 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
676 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
677 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
678 * or GL_SEPARATE_SPECULAR_COLOR */
687 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
692 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
694 struct gl_accum_attrib
696 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
701 * Used for storing clear color, texture border color, etc.
702 * The float values are typically unclamped.
713 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
715 struct gl_colorbuffer_attrib
717 GLuint ClearIndex
; /**< Index for glClear */
718 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
719 GLuint IndexMask
; /**< Color index write mask */
720 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
722 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
725 * \name alpha testing
728 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
729 GLenum AlphaFunc
; /**< Alpha test function */
730 GLfloat AlphaRefUnclamped
;
731 GLclampf AlphaRef
; /**< Alpha reference value */
738 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
740 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
741 * control, only on the fixed-pointness of the render target.
742 * The query does however depend on fragment color clamping.
744 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
745 GLfloat BlendColor
[4]; /**< Blending color */
749 GLenum SrcRGB
; /**< RGB blend source term */
750 GLenum DstRGB
; /**< RGB blend dest term */
751 GLenum SrcA
; /**< Alpha blend source term */
752 GLenum DstA
; /**< Alpha blend dest term */
753 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
754 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
755 } Blend
[MAX_DRAW_BUFFERS
];
756 /** Are the blend func terms currently different for each buffer/target? */
757 GLboolean _BlendFuncPerBuffer
;
758 /** Are the blend equations currently different for each buffer/target? */
759 GLboolean _BlendEquationPerBuffer
;
766 GLenum LogicOp
; /**< Logic operator */
767 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
768 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
771 GLboolean DitherFlag
; /**< Dither enable flag */
773 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
774 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
775 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
776 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
778 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
783 * Current attribute group (GL_CURRENT_BIT).
785 struct gl_current_attrib
788 * \name Current vertex attributes.
789 * \note Values are valid only after FLUSH_VERTICES has been called.
790 * \note Index and Edgeflag current values are stored as floats in the
791 * SIX and SEVEN attribute slots.
793 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
796 * \name Current raster position attributes (always valid).
797 * \note This set of attributes is very similar to the SWvertex struct.
800 GLfloat RasterPos
[4];
801 GLfloat RasterDistance
;
802 GLfloat RasterColor
[4];
803 GLfloat RasterSecondaryColor
[4];
804 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
805 GLboolean RasterPosValid
;
811 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
813 struct gl_depthbuffer_attrib
815 GLenum Func
; /**< Function for depth buffer compare */
816 GLclampd Clear
; /**< Value to clear depth buffer to */
817 GLboolean Test
; /**< Depth buffering enabled flag */
818 GLboolean Mask
; /**< Depth buffer writable? */
819 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
820 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
825 * Evaluator attribute group (GL_EVAL_BIT).
827 struct gl_eval_attrib
833 GLboolean Map1Color4
;
835 GLboolean Map1Normal
;
836 GLboolean Map1TextureCoord1
;
837 GLboolean Map1TextureCoord2
;
838 GLboolean Map1TextureCoord3
;
839 GLboolean Map1TextureCoord4
;
840 GLboolean Map1Vertex3
;
841 GLboolean Map1Vertex4
;
842 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
843 GLboolean Map2Color4
;
845 GLboolean Map2Normal
;
846 GLboolean Map2TextureCoord1
;
847 GLboolean Map2TextureCoord2
;
848 GLboolean Map2TextureCoord3
;
849 GLboolean Map2TextureCoord4
;
850 GLboolean Map2Vertex3
;
851 GLboolean Map2Vertex4
;
852 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
853 GLboolean AutoNormal
;
857 * \name Map Grid endpoints and divisions and calculated du values
861 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
862 GLint MapGrid2un
, MapGrid2vn
;
863 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
864 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
870 * Fog attribute group (GL_FOG_BIT).
874 GLboolean Enabled
; /**< Fog enabled flag */
875 GLfloat ColorUnclamped
[4]; /**< Fog color */
876 GLfloat Color
[4]; /**< Fog color */
877 GLfloat Density
; /**< Density >= 0.0 */
878 GLfloat Start
; /**< Start distance in eye coords */
879 GLfloat End
; /**< End distance in eye coords */
880 GLfloat Index
; /**< Fog index */
881 GLenum Mode
; /**< Fog mode */
882 GLboolean ColorSumEnabled
;
883 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
884 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
889 * \brief Layout qualifiers for gl_FragDepth.
891 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
892 * a layout qualifier.
894 * \see enum ir_depth_layout
896 enum gl_frag_depth_layout
{
897 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
898 FRAG_DEPTH_LAYOUT_ANY
,
899 FRAG_DEPTH_LAYOUT_GREATER
,
900 FRAG_DEPTH_LAYOUT_LESS
,
901 FRAG_DEPTH_LAYOUT_UNCHANGED
906 * Hint attribute group (GL_HINT_BIT).
908 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
910 struct gl_hint_attrib
912 GLenum PerspectiveCorrection
;
915 GLenum PolygonSmooth
;
917 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
918 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
919 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
920 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
927 #define LIGHT_SPOT 0x1
928 #define LIGHT_LOCAL_VIEWER 0x2
929 #define LIGHT_POSITIONAL 0x4
930 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
935 * Lighting attribute group (GL_LIGHT_BIT).
937 struct gl_light_attrib
939 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
940 struct gl_lightmodel Model
; /**< Lighting model */
943 * Must flush FLUSH_VERTICES before referencing:
946 struct gl_material Material
; /**< Includes front & back values */
949 GLboolean Enabled
; /**< Lighting enabled flag */
950 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
951 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
952 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
953 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
954 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
955 GLboolean ColorMaterialEnabled
;
956 GLenum ClampVertexColor
;
957 GLboolean _ClampVertexColor
;
959 struct gl_light EnabledList
; /**< List sentinel */
962 * Derived state for optimizations:
965 GLboolean _NeedEyeCoords
;
966 GLboolean _NeedVertices
; /**< Use fast shader? */
967 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
968 GLfloat _BaseColor
[2][3];
974 * Line attribute group (GL_LINE_BIT).
976 struct gl_line_attrib
978 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
979 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
980 GLushort StipplePattern
; /**< Stipple pattern */
981 GLint StippleFactor
; /**< Stipple repeat factor */
982 GLfloat Width
; /**< Line width */
987 * Display list attribute group (GL_LIST_BIT).
989 struct gl_list_attrib
996 * Multisample attribute group (GL_MULTISAMPLE_BIT).
998 struct gl_multisample_attrib
1001 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
1002 GLboolean SampleAlphaToCoverage
;
1003 GLboolean SampleAlphaToOne
;
1004 GLboolean SampleCoverage
;
1005 GLfloat SampleCoverageValue
;
1006 GLboolean SampleCoverageInvert
;
1011 * A pixelmap (see glPixelMap)
1016 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1017 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1022 * Collection of all pixelmaps
1026 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1027 struct gl_pixelmap GtoG
;
1028 struct gl_pixelmap BtoB
;
1029 struct gl_pixelmap AtoA
;
1030 struct gl_pixelmap ItoR
;
1031 struct gl_pixelmap ItoG
;
1032 struct gl_pixelmap ItoB
;
1033 struct gl_pixelmap ItoA
;
1034 struct gl_pixelmap ItoI
;
1035 struct gl_pixelmap StoS
;
1040 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1042 struct gl_pixel_attrib
1044 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1046 /*--- Begin Pixel Transfer State ---*/
1047 /* Fields are in the order in which they're applied... */
1049 /** Scale & Bias (index shift, offset) */
1051 GLfloat RedBias
, RedScale
;
1052 GLfloat GreenBias
, GreenScale
;
1053 GLfloat BlueBias
, BlueScale
;
1054 GLfloat AlphaBias
, AlphaScale
;
1055 GLfloat DepthBias
, DepthScale
;
1056 GLint IndexShift
, IndexOffset
;
1060 /* Note: actual pixel maps are not part of this attrib group */
1061 GLboolean MapColorFlag
;
1062 GLboolean MapStencilFlag
;
1064 /*--- End Pixel Transfer State ---*/
1067 GLfloat ZoomX
, ZoomY
;
1072 * Point attribute group (GL_POINT_BIT).
1074 struct gl_point_attrib
1076 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1077 GLfloat Size
; /**< User-specified point size */
1078 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1079 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1080 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1081 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1082 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1083 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1084 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1085 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1090 * Polygon attribute group (GL_POLYGON_BIT).
1092 struct gl_polygon_attrib
1094 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1095 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1096 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1097 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1098 GLboolean CullFlag
; /**< Culling on/off flag */
1099 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1100 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1101 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1102 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1103 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1104 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1105 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1106 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1111 * Scissor attributes (GL_SCISSOR_BIT).
1113 struct gl_scissor_attrib
1115 GLboolean Enabled
; /**< Scissor test enabled? */
1116 GLint X
, Y
; /**< Lower left corner of box */
1117 GLsizei Width
, Height
; /**< Size of box */
1122 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1124 * Three sets of stencil data are tracked so that OpenGL 2.0,
1125 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1126 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1127 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1128 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1129 * GL_EXT_stencil_two_side GL_BACK state.
1131 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1132 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1134 * The derived value \c _TestTwoSide is set when the front-face and back-face
1135 * stencil state are different.
1137 struct gl_stencil_attrib
1139 GLboolean Enabled
; /**< Enabled flag */
1140 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1141 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1142 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1143 GLboolean _TestTwoSide
;
1144 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1145 GLenum Function
[3]; /**< Stencil function */
1146 GLenum FailFunc
[3]; /**< Fail function */
1147 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1148 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1149 GLint Ref
[3]; /**< Reference value */
1150 GLuint ValueMask
[3]; /**< Value mask */
1151 GLuint WriteMask
[3]; /**< Write mask */
1152 GLuint Clear
; /**< Clear value */
1157 * An index for each type of texture object. These correspond to the GL
1158 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1159 * Note: the order is from highest priority to lowest priority.
1163 TEXTURE_BUFFER_INDEX
,
1164 TEXTURE_2D_ARRAY_INDEX
,
1165 TEXTURE_1D_ARRAY_INDEX
,
1176 * Bit flags for each type of texture object
1177 * Used for Texture.Unit[]._ReallyEnabled flags.
1180 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1181 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1182 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1183 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1184 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1185 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1186 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1187 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1192 * TexGenEnabled flags.
1199 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1204 * Bit flag versions of the corresponding GL_ constants.
1207 #define TEXGEN_SPHERE_MAP 0x1
1208 #define TEXGEN_OBJ_LINEAR 0x2
1209 #define TEXGEN_EYE_LINEAR 0x4
1210 #define TEXGEN_REFLECTION_MAP_NV 0x8
1211 #define TEXGEN_NORMAL_MAP_NV 0x10
1213 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1214 TEXGEN_REFLECTION_MAP_NV | \
1215 TEXGEN_NORMAL_MAP_NV)
1216 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1217 TEXGEN_REFLECTION_MAP_NV | \
1218 TEXGEN_NORMAL_MAP_NV | \
1224 /** Tex-gen enabled for texture unit? */
1225 #define ENABLE_TEXGEN(unit) (1 << (unit))
1227 /** Non-identity texture matrix for texture unit? */
1228 #define ENABLE_TEXMAT(unit) (1 << (unit))
1232 * Texture image state. Describes the dimensions of a texture image,
1233 * the texel format and pointers to Texel Fetch functions.
1235 struct gl_texture_image
1237 GLint InternalFormat
; /**< Internal format as given by the user */
1238 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1239 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1240 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1241 * GL_DEPTH_STENCIL_EXT only. Used for
1242 * choosing TexEnv arithmetic.
1244 gl_format TexFormat
; /**< The actual texture memory format */
1246 GLuint Border
; /**< 0 or 1 */
1247 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1248 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1249 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1250 GLuint Width2
; /**< = Width - 2*Border */
1251 GLuint Height2
; /**< = Height - 2*Border */
1252 GLuint Depth2
; /**< = Depth - 2*Border */
1253 GLuint WidthLog2
; /**< = log2(Width2) */
1254 GLuint HeightLog2
; /**< = log2(Height2) */
1255 GLuint DepthLog2
; /**< = log2(Depth2) */
1256 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1257 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1258 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1259 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1260 GLboolean IsClientData
; /**< Data owned by client? */
1261 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1263 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1264 GLuint Level
; /**< Which mipmap level am I? */
1265 /** Cube map face: index into gl_texture_object::Image[] array */
1268 GLuint RowStride
; /**< Padded width in units of texels */
1269 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1270 each 2D slice in 'Data', in texels */
1271 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1274 * \name For device driver:
1277 void *DriverData
; /**< Arbitrary device driver data */
1283 * Indexes for cube map faces.
1298 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1299 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1301 struct gl_sampler_object
1306 GLenum WrapS
; /**< S-axis texture image wrap mode */
1307 GLenum WrapT
; /**< T-axis texture image wrap mode */
1308 GLenum WrapR
; /**< R-axis texture image wrap mode */
1309 GLenum MinFilter
; /**< minification filter */
1310 GLenum MagFilter
; /**< magnification filter */
1311 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1312 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1313 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1314 GLfloat LodBias
; /**< OpenGL 1.4 */
1315 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1316 GLenum CompareMode
; /**< GL_ARB_shadow */
1317 GLenum CompareFunc
; /**< GL_ARB_shadow */
1318 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1319 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1320 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1322 /* deprecated sampler state */
1323 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1325 /** Is the texture object complete with respect to this sampler? */
1326 GLboolean _CompleteTexture
;
1331 * Texture object state. Contains the array of mipmap images, border color,
1332 * wrap modes, filter modes, and shadow/texcompare state.
1334 struct gl_texture_object
1336 _glthread_Mutex Mutex
; /**< for thread safety */
1337 GLint RefCount
; /**< reference count */
1338 GLuint Name
; /**< the user-visible texture object ID */
1339 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1341 struct gl_sampler_object Sampler
;
1343 GLfloat Priority
; /**< in [0,1] */
1344 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1345 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1346 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1347 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1348 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1349 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1350 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1351 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1352 GLboolean _Complete
; /**< Is texture object complete? */
1353 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1354 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1356 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1357 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1359 /** GL_ARB_texture_buffer_object */
1360 struct gl_buffer_object
*BufferObject
;
1361 GLenum BufferObjectFormat
;
1364 * \name For device driver.
1365 * Note: instead of attaching driver data to this pointer, it's preferable
1366 * to instead use this struct as a base class for your own texture object
1367 * class. Driver->NewTextureObject() can be used to implement the
1370 void *DriverData
; /**< Arbitrary device driver data */
1374 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1375 #define MAX_COMBINER_TERMS 4
1379 * Texture combine environment state.
1381 struct gl_tex_env_combine_state
1383 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1384 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1385 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1386 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1387 GLenum SourceA
[MAX_COMBINER_TERMS
];
1388 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1389 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1390 GLenum OperandA
[MAX_COMBINER_TERMS
];
1391 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1392 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1393 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1394 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1399 * Texture coord generation state.
1403 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1404 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1405 GLfloat ObjectPlane
[4];
1406 GLfloat EyePlane
[4];
1411 * Texture unit state. Contains enable flags, texture environment/function/
1412 * combiners, texgen state, and pointers to current texture objects.
1414 struct gl_texture_unit
1416 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1417 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1419 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1420 GLclampf EnvColor
[4];
1421 GLfloat EnvColorUnclamped
[4];
1423 struct gl_texgen GenS
;
1424 struct gl_texgen GenT
;
1425 struct gl_texgen GenR
;
1426 struct gl_texgen GenQ
;
1427 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1428 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1430 GLfloat LodBias
; /**< for biasing mipmap levels */
1432 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1434 /** Current sampler object (GL_ARB_sampler_objects) */
1435 struct gl_sampler_object
*Sampler
;
1438 * \name GL_EXT_texture_env_combine
1440 struct gl_tex_env_combine_state Combine
;
1443 * Derived state based on \c EnvMode and the \c BaseFormat of the
1444 * currently enabled texture.
1446 struct gl_tex_env_combine_state _EnvMode
;
1449 * Currently enabled combiner state. This will point to either
1450 * \c Combine or \c _EnvMode.
1452 struct gl_tex_env_combine_state
*_CurrentCombine
;
1454 /** Current texture object pointers */
1455 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1457 /** Points to highest priority, complete and enabled texture object */
1458 struct gl_texture_object
*_Current
;
1463 * Texture attribute group (GL_TEXTURE_BIT).
1465 struct gl_texture_attrib
1467 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1468 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1470 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1472 /** GL_ARB_texture_buffer_object */
1473 struct gl_buffer_object
*BufferObject
;
1475 /** GL_ARB_seamless_cubemap */
1476 GLboolean CubeMapSeamless
;
1478 /** Texture units/samplers used by vertex or fragment texturing */
1479 GLbitfield _EnabledUnits
;
1481 /** Texture coord units/sets used for fragment texturing */
1482 GLbitfield _EnabledCoordUnits
;
1484 /** Texture coord units that have texgen enabled */
1485 GLbitfield _TexGenEnabled
;
1487 /** Texture coord units that have non-identity matrices */
1488 GLbitfield _TexMatEnabled
;
1490 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1491 GLbitfield _GenFlags
;
1496 * Transformation attribute group (GL_TRANSFORM_BIT).
1498 struct gl_transform_attrib
1500 GLenum MatrixMode
; /**< Matrix mode */
1501 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1502 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1503 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1504 GLboolean Normalize
; /**< Normalize all normals? */
1505 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1506 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1507 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1509 GLfloat CullEyePos
[4];
1510 GLfloat CullObjPos
[4];
1515 * Viewport attribute group (GL_VIEWPORT_BIT).
1517 struct gl_viewport_attrib
1519 GLint X
, Y
; /**< position */
1520 GLsizei Width
, Height
; /**< size */
1521 GLfloat Near
, Far
; /**< Depth buffer range */
1522 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1527 * GL_ARB_vertex/pixel_buffer_object buffer object
1529 struct gl_buffer_object
1531 _glthread_Mutex Mutex
;
1534 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1535 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1536 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1537 /** Fields describing a mapped buffer */
1539 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1540 GLvoid
*Pointer
; /**< User-space address of mapping */
1541 GLintptr Offset
; /**< Mapped offset */
1542 GLsizeiptr Length
; /**< Mapped length */
1544 GLboolean Written
; /**< Ever written to? (for debugging) */
1545 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1550 * Client pixel packing/unpacking attributes
1552 struct gl_pixelstore_attrib
1560 GLboolean SwapBytes
;
1562 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1563 GLboolean Invert
; /**< GL_MESA_pack_invert */
1564 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1569 * Client vertex array attributes
1571 struct gl_client_array
1573 GLint Size
; /**< components per element (1,2,3,4) */
1574 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1575 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1576 GLsizei Stride
; /**< user-specified stride */
1577 GLsizei StrideB
; /**< actual stride in bytes */
1578 const GLubyte
*Ptr
; /**< Points to array data */
1579 GLboolean Enabled
; /**< Enabled flag is a boolean */
1580 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1581 GLboolean Integer
; /**< Integer-valued? */
1582 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1583 GLuint _ElementSize
; /**< size of each element in bytes */
1585 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1586 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1591 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1592 * extension, but a nice encapsulation in any case.
1594 struct gl_array_object
1596 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1600 _glthread_Mutex Mutex
;
1601 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1603 /** Conventional vertex arrays */
1605 struct gl_client_array Vertex
;
1606 struct gl_client_array Weight
;
1607 struct gl_client_array Normal
;
1608 struct gl_client_array Color
;
1609 struct gl_client_array SecondaryColor
;
1610 struct gl_client_array FogCoord
;
1611 struct gl_client_array Index
;
1612 struct gl_client_array EdgeFlag
;
1613 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1614 struct gl_client_array PointSize
;
1618 * Generic arrays for vertex programs/shaders.
1619 * For NV vertex programs, these attributes alias and take priority
1620 * over the conventional attribs above. For ARB vertex programs and
1621 * GLSL vertex shaders, these attributes are separate.
1623 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1625 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1626 GLbitfield _Enabled
;
1629 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1630 * we can determine the max legal (in bounds) glDrawElements array index.
1637 * Vertex array state
1639 struct gl_array_attrib
1641 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1642 struct gl_array_object
*ArrayObj
;
1644 /** The default vertex array object */
1645 struct gl_array_object
*DefaultArrayObj
;
1647 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1648 struct _mesa_HashTable
*Objects
;
1650 GLint ActiveTexture
; /**< Client Active Texture */
1651 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1652 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1654 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1655 GLboolean PrimitiveRestart
;
1656 GLuint RestartIndex
;
1658 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1659 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1661 /* GL_ARB_vertex_buffer_object */
1662 struct gl_buffer_object
*ArrayBufferObj
;
1663 struct gl_buffer_object
*ElementArrayBufferObj
;
1668 * Feedback buffer state
1673 GLbitfield _Mask
; /**< FB_* bits */
1681 * Selection buffer state
1685 GLuint
*Buffer
; /**< selection buffer */
1686 GLuint BufferSize
; /**< size of the selection buffer */
1687 GLuint BufferCount
; /**< number of values in the selection buffer */
1688 GLuint Hits
; /**< number of records in the selection buffer */
1689 GLuint NameStackDepth
; /**< name stack depth */
1690 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1691 GLboolean HitFlag
; /**< hit flag */
1692 GLfloat HitMinZ
; /**< minimum hit depth */
1693 GLfloat HitMaxZ
; /**< maximum hit depth */
1698 * 1-D Evaluator control points
1702 GLuint Order
; /**< Number of control points */
1703 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1704 GLfloat
*Points
; /**< Points to contiguous control points */
1709 * 2-D Evaluator control points
1713 GLuint Uorder
; /**< Number of control points in U dimension */
1714 GLuint Vorder
; /**< Number of control points in V dimension */
1717 GLfloat
*Points
; /**< Points to contiguous control points */
1722 * All evaluator control point state
1724 struct gl_evaluators
1730 struct gl_1d_map Map1Vertex3
;
1731 struct gl_1d_map Map1Vertex4
;
1732 struct gl_1d_map Map1Index
;
1733 struct gl_1d_map Map1Color4
;
1734 struct gl_1d_map Map1Normal
;
1735 struct gl_1d_map Map1Texture1
;
1736 struct gl_1d_map Map1Texture2
;
1737 struct gl_1d_map Map1Texture3
;
1738 struct gl_1d_map Map1Texture4
;
1739 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1746 struct gl_2d_map Map2Vertex3
;
1747 struct gl_2d_map Map2Vertex4
;
1748 struct gl_2d_map Map2Index
;
1749 struct gl_2d_map Map2Color4
;
1750 struct gl_2d_map Map2Normal
;
1751 struct gl_2d_map Map2Texture1
;
1752 struct gl_2d_map Map2Texture2
;
1753 struct gl_2d_map Map2Texture3
;
1754 struct gl_2d_map Map2Texture4
;
1755 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1761 * Names of the various vertex/fragment program register files, etc.
1763 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1764 * All values should fit in a 4-bit field.
1766 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1767 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1768 * be "uniform" variables since they can only be set outside glBegin/End.
1769 * They're also all stored in the same Parameters array.
1773 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1774 PROGRAM_INPUT
, /**< machine->Inputs[] */
1775 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1776 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1777 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1778 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1779 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1780 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1781 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1782 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1783 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1784 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1785 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1786 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1787 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1793 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1794 * one of these values.
1798 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1799 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1800 SYSTEM_VALUE_MAX
/**< Number of values */
1804 /** Vertex and fragment instructions */
1805 struct prog_instruction
;
1806 struct gl_program_parameter_list
;
1807 struct gl_uniform_list
;
1811 * Base class for any kind of program object
1816 GLubyte
*String
; /**< Null-terminated program text */
1818 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1819 GLenum Format
; /**< String encoding format */
1822 struct prog_instruction
*Instructions
;
1824 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1825 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1826 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1827 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1828 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1829 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1830 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1831 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1834 /** Named parameters, constants, etc. from program text */
1835 struct gl_program_parameter_list
*Parameters
;
1836 /** Numbered local parameters */
1837 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1839 /** Vertex/fragment shader varying vars */
1840 struct gl_program_parameter_list
*Varying
;
1841 /** Vertex program user-defined attributes */
1842 struct gl_program_parameter_list
*Attributes
;
1844 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1845 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1846 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1847 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1849 /** Bitmask of which register files are read/written with indirect
1850 * addressing. Mask of (1 << PROGRAM_x) bits.
1852 GLbitfield IndirectRegisterFiles
;
1854 /** Logical counts */
1856 GLuint NumInstructions
;
1857 GLuint NumTemporaries
;
1858 GLuint NumParameters
;
1859 GLuint NumAttributes
;
1860 GLuint NumAddressRegs
;
1861 GLuint NumAluInstructions
;
1862 GLuint NumTexInstructions
;
1863 GLuint NumTexIndirections
;
1865 /** Native, actual h/w counts */
1867 GLuint NumNativeInstructions
;
1868 GLuint NumNativeTemporaries
;
1869 GLuint NumNativeParameters
;
1870 GLuint NumNativeAttributes
;
1871 GLuint NumNativeAddressRegs
;
1872 GLuint NumNativeAluInstructions
;
1873 GLuint NumNativeTexInstructions
;
1874 GLuint NumNativeTexIndirections
;
1879 /** Vertex program object */
1880 struct gl_vertex_program
1882 struct gl_program Base
; /**< base class */
1883 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1884 GLboolean IsPositionInvariant
;
1888 /** Geometry program object */
1889 struct gl_geometry_program
1891 struct gl_program Base
; /**< base class */
1894 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1895 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1896 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1900 /** Fragment program object */
1901 struct gl_fragment_program
1903 struct gl_program Base
; /**< base class */
1904 GLboolean UsesKill
; /**< shader uses KIL instruction */
1905 GLboolean OriginUpperLeft
;
1906 GLboolean PixelCenterInteger
;
1907 enum gl_frag_depth_layout FragDepthLayout
;
1912 * State common to vertex and fragment programs.
1914 struct gl_program_state
1916 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1917 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1922 * Context state for vertex programs.
1924 struct gl_vertex_program_state
1926 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1927 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1928 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1929 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1930 /** Computed two sided lighting for fixed function/programs. */
1931 GLboolean _TwoSideEnabled
;
1932 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1934 /** Currently enabled and valid vertex program (including internal
1935 * programs, user-defined vertex programs and GLSL vertex shaders).
1936 * This is the program we must use when rendering.
1938 struct gl_vertex_program
*_Current
;
1940 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1942 /* For GL_NV_vertex_program only: */
1943 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1944 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1946 /** Should fixed-function T&L be implemented with a vertex prog? */
1947 GLboolean _MaintainTnlProgram
;
1949 /** Program to emulate fixed-function T&L (see above) */
1950 struct gl_vertex_program
*_TnlProgram
;
1952 /** Cache of fixed-function programs */
1953 struct gl_program_cache
*Cache
;
1955 GLboolean _Overriden
;
1960 * Context state for geometry programs.
1962 struct gl_geometry_program_state
1964 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1965 GLboolean _Enabled
; /**< Enabled and valid program? */
1966 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1968 /** Currently enabled and valid program (including internal programs
1969 * and compiled shader programs).
1971 struct gl_geometry_program
*_Current
;
1973 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1975 /** Cache of fixed-function programs */
1976 struct gl_program_cache
*Cache
;
1980 * Context state for fragment programs.
1982 struct gl_fragment_program_state
1984 GLboolean Enabled
; /**< User-set fragment program enable flag */
1985 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1986 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1988 /** Currently enabled and valid fragment program (including internal
1989 * programs, user-defined fragment programs and GLSL fragment shaders).
1990 * This is the program we must use when rendering.
1992 struct gl_fragment_program
*_Current
;
1994 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1996 /** Should fixed-function texturing be implemented with a fragment prog? */
1997 GLboolean _MaintainTexEnvProgram
;
1999 /** Program to emulate fixed-function texture env/combine (see above) */
2000 struct gl_fragment_program
*_TexEnvProgram
;
2002 /** Cache of fixed-function programs */
2003 struct gl_program_cache
*Cache
;
2008 * ATI_fragment_shader runtime state
2010 #define ATI_FS_INPUT_PRIMARY 0
2011 #define ATI_FS_INPUT_SECONDARY 1
2013 struct atifs_instruction
;
2014 struct atifs_setupinst
;
2017 * ATI fragment shader
2019 struct ati_fragment_shader
2023 struct atifs_instruction
*Instructions
[2];
2024 struct atifs_setupinst
*SetupInst
[2];
2025 GLfloat Constants
[8][4];
2026 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2027 GLubyte numArithInstr
[2];
2028 GLubyte regsAssigned
[2];
2029 GLubyte NumPasses
; /**< 1 or 2 */
2031 GLubyte last_optype
;
2032 GLboolean interpinp1
;
2038 * Context state for GL_ATI_fragment_shader
2040 struct gl_ati_fragment_shader_state
2043 GLboolean _Enabled
; /**< enabled and valid shader? */
2044 GLboolean Compiling
;
2045 GLfloat GlobalConstants
[8][4];
2046 struct ati_fragment_shader
*Current
;
2051 * Occlusion/timer query object.
2053 struct gl_query_object
2055 GLenum Target
; /**< The query target, when active */
2056 GLuint Id
; /**< hash table ID/name */
2057 GLuint64EXT Result
; /**< the counter */
2058 GLboolean Active
; /**< inside Begin/EndQuery */
2059 GLboolean Ready
; /**< result is ready? */
2064 * Context state for query objects.
2066 struct gl_query_state
2068 struct _mesa_HashTable
*QueryObjects
;
2069 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2070 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2072 /** GL_NV_conditional_render */
2073 struct gl_query_object
*CondRenderQuery
;
2075 /** GL_EXT_transform_feedback */
2076 struct gl_query_object
*PrimitivesGenerated
;
2077 struct gl_query_object
*PrimitivesWritten
;
2079 /** GL_ARB_timer_query */
2080 struct gl_query_object
*TimeElapsed
;
2082 GLenum CondRenderMode
;
2086 /** Sync object state */
2087 struct gl_sync_object
{
2088 struct simple_node link
;
2089 GLenum Type
; /**< GL_SYNC_FENCE */
2090 GLuint Name
; /**< Fence name */
2091 GLint RefCount
; /**< Reference count */
2092 GLboolean DeletePending
; /**< Object was deleted while there were still
2093 * live references (e.g., sync not yet finished)
2095 GLenum SyncCondition
;
2096 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2097 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2101 /** Set by #pragma directives */
2102 struct gl_sl_pragmas
2104 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2105 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2106 GLboolean Optimize
; /**< defaults on */
2107 GLboolean Debug
; /**< defaults off */
2112 * A GLSL vertex or fragment shader object.
2116 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2117 GLuint Name
; /**< AKA the handle */
2118 GLint RefCount
; /**< Reference count */
2119 GLboolean DeletePending
;
2120 GLboolean CompileStatus
;
2121 const GLchar
*Source
; /**< Source code string */
2122 GLuint SourceChecksum
; /**< for debug/logging purposes */
2123 struct gl_program
*Program
; /**< Post-compile assembly code */
2125 struct gl_sl_pragmas Pragmas
;
2127 unsigned Version
; /**< GLSL version used for linking */
2129 struct exec_list
*ir
;
2130 struct glsl_symbol_table
*symbols
;
2132 /** Shaders containing built-in functions that are used for linking. */
2133 struct gl_shader
*builtins_to_link
[16];
2134 unsigned num_builtins_to_link
;
2139 * A GLSL program object.
2140 * Basically a linked collection of vertex and fragment shaders.
2142 struct gl_shader_program
2144 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2145 GLuint Name
; /**< aka handle or ID */
2146 GLint RefCount
; /**< Reference count */
2147 GLboolean DeletePending
;
2149 GLuint NumShaders
; /**< number of attached shaders */
2150 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2152 /** User-defined attribute bindings (glBindAttribLocation) */
2153 struct gl_program_parameter_list
*Attributes
;
2155 /** Transform feedback varyings */
2159 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2160 } TransformFeedback
;
2162 /** Geometry shader state - copied into gl_geometry_program at link time */
2165 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2166 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2167 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2170 /* post-link info: */
2171 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2172 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2173 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2174 struct gl_uniform_list
*Uniforms
;
2175 struct gl_program_parameter_list
*Varying
;
2176 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2177 GLboolean Validated
;
2178 GLboolean _Used
; /**< Ever used for drawing? */
2181 unsigned Version
; /**< GLSL version used for linking */
2184 * Per-stage shaders resulting from the first stage of linking.
2186 * Set of linked shaders for this program. The array is accessed using the
2187 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2190 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2194 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2195 #define GLSL_LOG 0x2 /**< Write shaders to files */
2196 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2197 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2198 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2199 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2200 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2201 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2205 * Context state for GLSL vertex/fragment shaders.
2207 struct gl_shader_state
2210 * Programs used for rendering
2212 * There is a separate program set for each shader stage. If
2213 * GL_EXT_separate_shader_objects is not supported, each of these must point
2214 * to \c NULL or to the same program.
2216 struct gl_shader_program
*CurrentVertexProgram
;
2217 struct gl_shader_program
*CurrentGeometryProgram
;
2218 struct gl_shader_program
*CurrentFragmentProgram
;
2221 * Program used by glUniform calls.
2223 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2225 struct gl_shader_program
*ActiveProgram
;
2227 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2231 * Compiler options for a single GLSL shaders type
2233 struct gl_shader_compiler_options
2235 /** Driver-selectable options: */
2236 GLboolean EmitCondCodes
; /**< Use condition codes? */
2237 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2238 GLboolean EmitNoLoops
;
2239 GLboolean EmitNoFunctions
;
2240 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2241 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2242 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2243 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2246 * \name Forms of indirect addressing the driver cannot do.
2249 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2250 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2251 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2252 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2255 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2256 GLuint MaxUnrollIterations
;
2258 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2262 * Transform feedback object state
2264 struct gl_transform_feedback_object
2266 GLuint Name
; /**< AKA the object ID */
2268 GLboolean Active
; /**< Is transform feedback enabled? */
2269 GLboolean Paused
; /**< Is transform feedback paused? */
2271 /** The feedback buffers */
2272 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2273 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2275 /** Start of feedback data in dest buffer */
2276 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2277 /** Max data to put into dest buffer (in bytes) */
2278 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2283 * Context state for transform feedback.
2285 struct gl_transform_feedback
2287 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2289 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2291 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2292 struct gl_buffer_object
*CurrentBuffer
;
2294 /** The table of all transform feedback objects */
2295 struct _mesa_HashTable
*Objects
;
2297 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2298 struct gl_transform_feedback_object
*CurrentObject
;
2300 /** The default xform-fb object (Name==0) */
2301 struct gl_transform_feedback_object
*DefaultObject
;
2307 * State which can be shared by multiple contexts:
2309 struct gl_shared_state
2311 _glthread_Mutex Mutex
; /**< for thread safety */
2312 GLint RefCount
; /**< Reference count */
2313 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2314 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2316 /** Default texture objects (shared by all texture units) */
2317 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2319 /** Fallback texture used when a bound texture is incomplete */
2320 struct gl_texture_object
*FallbackTex
;
2323 * \name Thread safety and statechange notification for texture
2326 * \todo Improve the granularity of locking.
2329 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2330 GLuint TextureStateStamp
; /**< state notification for shared tex */
2333 /** Default buffer object for vertex arrays that aren't in VBOs */
2334 struct gl_buffer_object
*NullBufferObj
;
2337 * \name Vertex/geometry/fragment programs
2340 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2341 struct gl_vertex_program
*DefaultVertexProgram
;
2342 struct gl_fragment_program
*DefaultFragmentProgram
;
2343 struct gl_geometry_program
*DefaultGeometryProgram
;
2346 /* GL_ATI_fragment_shader */
2347 struct _mesa_HashTable
*ATIShaders
;
2348 struct ati_fragment_shader
*DefaultFragmentShader
;
2350 struct _mesa_HashTable
*BufferObjects
;
2352 /** Table of both gl_shader and gl_shader_program objects */
2353 struct _mesa_HashTable
*ShaderObjects
;
2355 /* GL_EXT_framebuffer_object */
2356 struct _mesa_HashTable
*RenderBuffers
;
2357 struct _mesa_HashTable
*FrameBuffers
;
2360 struct simple_node SyncObjects
;
2362 /** GL_ARB_sampler_objects */
2363 struct _mesa_HashTable
*SamplerObjects
;
2365 void *DriverData
; /**< Device driver shared state */
2372 * A renderbuffer stores colors or depth values or stencil values.
2373 * A framebuffer object will have a collection of these.
2374 * Data are read/written to the buffer with a handful of Get/Put functions.
2376 * Instances of this object are allocated with the Driver's NewRenderbuffer
2377 * hook. Drivers will likely wrap this class inside a driver-specific
2378 * class to simulate inheritance.
2380 struct gl_renderbuffer
2382 _glthread_Mutex Mutex
; /**< for thread safety */
2383 GLuint ClassID
; /**< Useful for drivers */
2386 GLuint Width
, Height
;
2387 GLint RowStride
; /**< Padded width in units of pixels */
2388 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2390 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2394 GLenum InternalFormat
; /**< The user-specified format */
2395 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2396 GL_STENCIL_INDEX. */
2397 gl_format Format
; /**< The actual renderbuffer memory format */
2399 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2400 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2402 /* Used to wrap one renderbuffer around another: */
2403 struct gl_renderbuffer
*Wrapped
;
2405 /* Delete this renderbuffer */
2406 void (*Delete
)(struct gl_renderbuffer
*rb
);
2408 /* Allocate new storage for this renderbuffer */
2409 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2410 GLenum internalFormat
,
2411 GLuint width
, GLuint height
);
2413 /* Lock/Unlock are called before/after calling the Get/Put functions.
2414 * Not sure this is the right place for these yet.
2415 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2416 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2419 /* Return a pointer to the element/pixel at (x,y).
2420 * Should return NULL if the buffer memory can't be directly addressed.
2422 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2425 /* Get/Read a row of values.
2426 * The values will be of format _BaseFormat and type DataType.
2428 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2429 GLint x
, GLint y
, void *values
);
2431 /* Get/Read values at arbitrary locations.
2432 * The values will be of format _BaseFormat and type DataType.
2434 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2435 const GLint x
[], const GLint y
[], void *values
);
2437 /* Put/Write a row of values.
2438 * The values will be of format _BaseFormat and type DataType.
2440 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2441 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2443 /* Put/Write a row of RGB values. This is a special-case routine that's
2444 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2445 * a common case for glDrawPixels and some triangle routines.
2446 * The values will be of format GL_RGB and type DataType.
2448 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2449 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2452 /* Put/Write a row of identical values.
2453 * The values will be of format _BaseFormat and type DataType.
2455 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2456 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2458 /* Put/Write values at arbitrary locations.
2459 * The values will be of format _BaseFormat and type DataType.
2461 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2462 const GLint x
[], const GLint y
[], const void *values
,
2463 const GLubyte
*mask
);
2464 /* Put/Write identical values at arbitrary locations.
2465 * The values will be of format _BaseFormat and type DataType.
2467 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2468 GLuint count
, const GLint x
[], const GLint y
[],
2469 const void *value
, const GLubyte
*mask
);
2474 * A renderbuffer attachment points to either a texture object (and specifies
2475 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2477 struct gl_renderbuffer_attachment
2479 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2483 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2484 * application supplied renderbuffer object.
2486 struct gl_renderbuffer
*Renderbuffer
;
2489 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2490 * supplied texture object.
2492 struct gl_texture_object
*Texture
;
2493 GLuint TextureLevel
; /**< Attached mipmap level. */
2494 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2495 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2496 * and 2D array textures */
2501 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2502 * In C++ terms, think of this as a base class from which device drivers
2503 * will make derived classes.
2505 struct gl_framebuffer
2507 _glthread_Mutex Mutex
; /**< for thread safety */
2509 * If zero, this is a window system framebuffer. If non-zero, this
2510 * is a FBO framebuffer; note that for some devices (i.e. those with
2511 * a natural pixel coordinate system for FBOs that differs from the
2512 * OpenGL/Mesa coordinate system), this means that the viewport,
2513 * polygon face orientation, and polygon stipple will have to be inverted.
2518 GLboolean DeletePending
;
2521 * The framebuffer's visual. Immutable if this is a window system buffer.
2522 * Computed from attachments if user-made FBO.
2524 struct gl_config Visual
;
2526 GLboolean Initialized
;
2528 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2530 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2532 GLint _Xmin
, _Xmax
; /**< inclusive */
2533 GLint _Ymin
, _Ymax
; /**< exclusive */
2536 /** \name Derived Z buffer stuff */
2538 GLuint _DepthMax
; /**< Max depth buffer value */
2539 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2540 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2543 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2546 /** Integer color values */
2547 GLboolean _IntegerColor
;
2549 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2550 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2552 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2553 * attribute group and GL_PIXEL attribute group, respectively.
2555 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2556 GLenum ColorReadBuffer
;
2558 /** Computed from ColorDraw/ReadBuffer above */
2559 GLuint _NumColorDrawBuffers
;
2560 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2561 GLint _ColorReadBufferIndex
; /* -1 = None */
2562 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2563 struct gl_renderbuffer
*_ColorReadBuffer
;
2565 /** The Actual depth/stencil buffers to use. May be wrappers around the
2566 * depth/stencil buffers attached above. */
2567 struct gl_renderbuffer
*_DepthBuffer
;
2568 struct gl_renderbuffer
*_StencilBuffer
;
2570 /** Delete this framebuffer */
2571 void (*Delete
)(struct gl_framebuffer
*fb
);
2576 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2580 GLushort RangeMin
; /**< min value exponent */
2581 GLushort RangeMax
; /**< max value exponent */
2582 GLushort Precision
; /**< number of mantissa bits */
2587 * Limits for vertex, geometry and fragment programs/shaders.
2589 struct gl_program_constants
2591 /* logical limits */
2592 GLuint MaxInstructions
;
2593 GLuint MaxAluInstructions
;
2594 GLuint MaxTexInstructions
;
2595 GLuint MaxTexIndirections
;
2598 GLuint MaxAddressRegs
;
2599 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2600 GLuint MaxParameters
;
2601 GLuint MaxLocalParams
;
2602 GLuint MaxEnvParams
;
2603 /* native/hardware limits */
2604 GLuint MaxNativeInstructions
;
2605 GLuint MaxNativeAluInstructions
;
2606 GLuint MaxNativeTexInstructions
;
2607 GLuint MaxNativeTexIndirections
;
2608 GLuint MaxNativeAttribs
;
2609 GLuint MaxNativeTemps
;
2610 GLuint MaxNativeAddressRegs
;
2611 GLuint MaxNativeParameters
;
2613 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2614 /* ES 2.0 and GL_ARB_ES2_compatibility */
2615 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2616 struct gl_precision LowInt
, MediumInt
, HighInt
;
2621 * Constants which may be overridden by device driver during context creation
2622 * but are never changed after that.
2626 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2627 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2628 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2629 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2630 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2631 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2632 GLuint MaxTextureCoordUnits
;
2633 GLuint MaxTextureImageUnits
;
2634 GLuint MaxVertexTextureImageUnits
;
2635 GLuint MaxCombinedTextureImageUnits
;
2636 GLuint MaxGeometryTextureImageUnits
;
2637 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2638 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2639 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2640 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2642 GLuint MaxArrayLockSize
;
2646 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2647 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2648 GLfloat PointSizeGranularity
;
2649 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2650 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2651 GLfloat LineWidthGranularity
;
2653 GLuint MaxColorTableSize
;
2655 GLuint MaxClipPlanes
;
2657 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2658 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2660 GLuint MaxViewportWidth
, MaxViewportHeight
;
2662 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2663 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2664 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2665 GLuint MaxProgramMatrices
;
2666 GLuint MaxProgramMatrixStackDepth
;
2668 /** vertex array / buffer object bounds checking */
2669 GLboolean CheckArrayBounds
;
2671 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2673 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2674 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2675 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2677 /** Number of varying vectors between vertex and fragment shaders */
2679 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2680 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2682 /** GL_ARB_geometry_shader4 */
2683 GLuint MaxGeometryOutputVertices
;
2684 GLuint MaxGeometryTotalOutputComponents
;
2686 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2689 * Does the driver support real 32-bit integers? (Otherwise, integers are
2690 * simulated via floats.)
2692 GLboolean NativeIntegers
;
2695 * If the driver supports real 32-bit integers, what integer value should be
2696 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2698 GLuint UniformBooleanTrue
;
2700 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2701 GLbitfield SupportedBumpUnits
;
2704 * Maximum amount of time, measured in nanseconds, that the server can wait.
2706 GLuint64 MaxServerWaitTimeout
;
2708 /** GL_EXT_provoking_vertex */
2709 GLboolean QuadsFollowProvokingVertexConvention
;
2711 /** OpenGL version 3.0 */
2712 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2714 /** OpenGL version 3.2 */
2715 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2717 /** GL_EXT_transform_feedback */
2718 GLuint MaxTransformFeedbackSeparateAttribs
;
2719 GLuint MaxTransformFeedbackSeparateComponents
;
2720 GLuint MaxTransformFeedbackInterleavedComponents
;
2722 /** GL_EXT_gpu_shader4 */
2723 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2725 /* GL_EXT_framebuffer_sRGB */
2726 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2728 /* GL_ARB_robustness */
2729 GLenum ResetStrategy
;
2734 * Enable flag for each OpenGL extension. Different device drivers will
2735 * enable different extensions at runtime.
2737 struct gl_extensions
2739 GLboolean dummy
; /* don't remove this! */
2740 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2741 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2742 GLboolean ARB_ES2_compatibility
;
2743 GLboolean ARB_blend_func_extended
;
2744 GLboolean ARB_color_buffer_float
;
2745 GLboolean ARB_copy_buffer
;
2746 GLboolean ARB_depth_buffer_float
;
2747 GLboolean ARB_depth_clamp
;
2748 GLboolean ARB_depth_texture
;
2749 GLboolean ARB_draw_buffers
;
2750 GLboolean ARB_draw_buffers_blend
;
2751 GLboolean ARB_draw_elements_base_vertex
;
2752 GLboolean ARB_draw_instanced
;
2753 GLboolean ARB_fragment_coord_conventions
;
2754 GLboolean ARB_fragment_program
;
2755 GLboolean ARB_fragment_program_shadow
;
2756 GLboolean ARB_fragment_shader
;
2757 GLboolean ARB_framebuffer_object
;
2758 GLboolean ARB_explicit_attrib_location
;
2759 GLboolean ARB_geometry_shader4
;
2760 GLboolean ARB_half_float_pixel
;
2761 GLboolean ARB_half_float_vertex
;
2762 GLboolean ARB_instanced_arrays
;
2763 GLboolean ARB_map_buffer_range
;
2764 GLboolean ARB_multisample
;
2765 GLboolean ARB_multitexture
;
2766 GLboolean ARB_occlusion_query
;
2767 GLboolean ARB_occlusion_query2
;
2768 GLboolean ARB_point_sprite
;
2769 GLboolean ARB_sampler_objects
;
2770 GLboolean ARB_seamless_cube_map
;
2771 GLboolean ARB_shader_objects
;
2772 GLboolean ARB_shader_stencil_export
;
2773 GLboolean ARB_shader_texture_lod
;
2774 GLboolean ARB_shading_language_100
;
2775 GLboolean ARB_shadow
;
2776 GLboolean ARB_shadow_ambient
;
2778 GLboolean ARB_texture_border_clamp
;
2779 GLboolean ARB_texture_buffer_object
;
2780 GLboolean ARB_texture_compression
;
2781 GLboolean ARB_texture_compression_rgtc
;
2782 GLboolean ARB_texture_cube_map
;
2783 GLboolean ARB_texture_env_combine
;
2784 GLboolean ARB_texture_env_crossbar
;
2785 GLboolean ARB_texture_env_dot3
;
2786 GLboolean ARB_texture_float
;
2787 GLboolean ARB_texture_mirrored_repeat
;
2788 GLboolean ARB_texture_multisample
;
2789 GLboolean ARB_texture_non_power_of_two
;
2790 GLboolean ARB_texture_rg
;
2791 GLboolean ARB_texture_rgb10_a2ui
;
2792 GLboolean ARB_timer_query
;
2793 GLboolean ARB_transform_feedback2
;
2794 GLboolean ARB_transpose_matrix
;
2795 GLboolean ARB_uniform_buffer_object
;
2796 GLboolean ARB_vertex_array_object
;
2797 GLboolean ARB_vertex_buffer_object
;
2798 GLboolean ARB_vertex_program
;
2799 GLboolean ARB_vertex_shader
;
2800 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2801 GLboolean ARB_window_pos
;
2804 GLboolean EXT_blend_color
;
2805 GLboolean EXT_blend_equation_separate
;
2806 GLboolean EXT_blend_func_separate
;
2807 GLboolean EXT_blend_minmax
;
2808 GLboolean EXT_blend_subtract
;
2809 GLboolean EXT_clip_volume_hint
;
2810 GLboolean EXT_compiled_vertex_array
;
2811 GLboolean EXT_copy_texture
;
2812 GLboolean EXT_depth_bounds_test
;
2813 GLboolean EXT_draw_buffers2
;
2814 GLboolean EXT_draw_range_elements
;
2815 GLboolean EXT_fog_coord
;
2816 GLboolean EXT_framebuffer_blit
;
2817 GLboolean EXT_framebuffer_multisample
;
2818 GLboolean EXT_framebuffer_object
;
2819 GLboolean EXT_framebuffer_sRGB
;
2820 GLboolean EXT_gpu_program_parameters
;
2821 GLboolean EXT_gpu_shader4
;
2822 GLboolean EXT_multi_draw_arrays
;
2823 GLboolean EXT_packed_depth_stencil
;
2824 GLboolean EXT_packed_float
;
2825 GLboolean EXT_packed_pixels
;
2826 GLboolean EXT_pixel_buffer_object
;
2827 GLboolean EXT_point_parameters
;
2828 GLboolean EXT_polygon_offset
;
2829 GLboolean EXT_provoking_vertex
;
2830 GLboolean EXT_rescale_normal
;
2831 GLboolean EXT_shadow_funcs
;
2832 GLboolean EXT_secondary_color
;
2833 GLboolean EXT_separate_shader_objects
;
2834 GLboolean EXT_separate_specular_color
;
2835 GLboolean EXT_stencil_wrap
;
2836 GLboolean EXT_stencil_two_side
;
2837 GLboolean EXT_subtexture
;
2838 GLboolean EXT_texture
;
2839 GLboolean EXT_texture_object
;
2840 GLboolean EXT_texture3D
;
2841 GLboolean EXT_texture_array
;
2842 GLboolean EXT_texture_compression_latc
;
2843 GLboolean EXT_texture_compression_s3tc
;
2844 GLboolean EXT_texture_env_add
;
2845 GLboolean EXT_texture_env_combine
;
2846 GLboolean EXT_texture_env_dot3
;
2847 GLboolean EXT_texture_filter_anisotropic
;
2848 GLboolean EXT_texture_integer
;
2849 GLboolean EXT_texture_lod_bias
;
2850 GLboolean EXT_texture_mirror_clamp
;
2851 GLboolean EXT_texture_shared_exponent
;
2852 GLboolean EXT_texture_snorm
;
2853 GLboolean EXT_texture_sRGB
;
2854 GLboolean EXT_texture_sRGB_decode
;
2855 GLboolean EXT_texture_swizzle
;
2856 GLboolean EXT_transform_feedback
;
2857 GLboolean EXT_timer_query
;
2858 GLboolean EXT_vertex_array
;
2859 GLboolean EXT_vertex_array_bgra
;
2860 GLboolean EXT_vertex_array_set
;
2861 GLboolean OES_standard_derivatives
;
2862 /* vendor extensions */
2863 GLboolean AMD_conservative_depth
;
2864 GLboolean AMD_seamless_cubemap_per_texture
;
2865 GLboolean APPLE_client_storage
;
2866 GLboolean APPLE_packed_pixels
;
2867 GLboolean APPLE_vertex_array_object
;
2868 GLboolean APPLE_object_purgeable
;
2869 GLboolean ATI_envmap_bumpmap
;
2870 GLboolean ATI_texture_compression_3dc
;
2871 GLboolean ATI_texture_mirror_once
;
2872 GLboolean ATI_texture_env_combine3
;
2873 GLboolean ATI_fragment_shader
;
2874 GLboolean ATI_separate_stencil
;
2875 GLboolean IBM_rasterpos_clip
;
2876 GLboolean IBM_multimode_draw_arrays
;
2877 GLboolean MESA_pack_invert
;
2878 GLboolean MESA_resize_buffers
;
2879 GLboolean MESA_ycbcr_texture
;
2880 GLboolean MESA_texture_array
;
2881 GLboolean NV_blend_square
;
2882 GLboolean NV_conditional_render
;
2883 GLboolean NV_fragment_program
;
2884 GLboolean NV_fragment_program_option
;
2885 GLboolean NV_light_max_exponent
;
2886 GLboolean NV_point_sprite
;
2887 GLboolean NV_primitive_restart
;
2888 GLboolean NV_texture_barrier
;
2889 GLboolean NV_texgen_reflection
;
2890 GLboolean NV_texture_env_combine4
;
2891 GLboolean NV_texture_rectangle
;
2892 GLboolean NV_vertex_program
;
2893 GLboolean NV_vertex_program1_1
;
2894 GLboolean OES_read_format
;
2895 GLboolean SGIS_generate_mipmap
;
2896 GLboolean SGIS_texture_edge_clamp
;
2897 GLboolean SGIS_texture_lod
;
2898 GLboolean TDFX_texture_compression_FXT1
;
2900 GLboolean OES_EGL_image
;
2901 GLboolean OES_draw_texture
;
2902 GLboolean EXT_texture_format_BGRA8888
;
2903 GLboolean extension_sentinel
;
2904 /** The extension string */
2905 const GLubyte
*String
;
2906 /** Number of supported extensions */
2912 * A stack of matrices (projection, modelview, color, texture, etc).
2914 struct gl_matrix_stack
2916 GLmatrix
*Top
; /**< points into Stack */
2917 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2918 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2919 GLuint MaxDepth
; /**< size of Stack[] array */
2920 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2925 * \name Bits for image transfer operations
2926 * \sa __struct gl_contextRec::ImageTransferState.
2929 #define IMAGE_SCALE_BIAS_BIT 0x1
2930 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2931 #define IMAGE_MAP_COLOR_BIT 0x4
2932 #define IMAGE_CLAMP_BIT 0x800
2935 /** Pixel Transfer ops */
2936 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2937 IMAGE_SHIFT_OFFSET_BIT | \
2938 IMAGE_MAP_COLOR_BIT)
2941 * \name Bits to indicate what state has changed.
2944 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2945 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2946 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2947 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2948 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2949 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2950 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2951 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2952 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2953 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2954 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2955 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2956 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2957 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2958 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2959 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2960 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2961 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2962 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2963 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2964 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2965 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2966 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2967 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2968 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2969 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2970 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2971 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2972 #define _NEW_BUFFER_OBJECT (1 << 28)
2973 #define _NEW_FRAG_CLAMP (1 << 29)
2979 * \name Bits to track array state changes
2981 * Also used to summarize array enabled.
2984 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2985 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2986 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2987 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2988 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2989 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2990 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2991 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2992 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2993 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2994 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2995 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2996 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2997 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2998 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2999 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
3000 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
3001 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
3002 #define _NEW_ARRAY_ALL 0xffffffff
3005 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
3006 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
3012 * \name A bunch of flags that we think might be useful to drivers.
3014 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3017 #define DD_FLATSHADE 0x1
3018 #define DD_SEPARATE_SPECULAR 0x2
3019 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3020 #define DD_TRI_LIGHT_TWOSIDE 0x8
3021 #define DD_TRI_UNFILLED 0x10
3022 #define DD_TRI_SMOOTH 0x20
3023 #define DD_TRI_STIPPLE 0x40
3024 #define DD_TRI_OFFSET 0x80
3025 #define DD_LINE_SMOOTH 0x100
3026 #define DD_LINE_STIPPLE 0x200
3027 #define DD_POINT_SMOOTH 0x400
3028 #define DD_POINT_ATTEN 0x800
3029 #define DD_TRI_TWOSTENCIL 0x1000
3034 * \name Define the state changes under which each of these bits might change
3037 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3038 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3039 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3040 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3041 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3042 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3043 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3044 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3045 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3046 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3047 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3048 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3049 #define _DD_NEW_POINT_SIZE _NEW_POINT
3050 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3055 * Composite state flags
3058 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3068 /* This has to be included here. */
3073 * Display list flags.
3074 * Strictly this is a tnl-private concept, but it doesn't seem
3075 * worthwhile adding a tnl private structure just to hold this one bit
3078 #define DLIST_DANGLING_REFS 0x1
3081 /** Opaque declaration of display list payload data type */
3082 union gl_dlist_node
;
3086 * Provide a location where information about a display list can be
3087 * collected. Could be extended with driverPrivate structures,
3088 * etc. in the future.
3090 struct gl_display_list
3093 GLbitfield Flags
; /**< DLIST_x flags */
3094 /** The dlist commands are in a linked list of nodes */
3095 union gl_dlist_node
*Head
;
3100 * State used during display list compilation and execution.
3102 struct gl_dlist_state
3104 GLuint CallDepth
; /**< Current recursion calling depth */
3106 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3107 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3108 GLuint CurrentPos
; /**< Index into current block of nodes */
3110 GLvertexformat ListVtxfmt
;
3112 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3113 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3115 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3116 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3118 GLubyte ActiveIndex
;
3119 GLfloat CurrentIndex
;
3121 GLubyte ActiveEdgeFlag
;
3122 GLboolean CurrentEdgeFlag
;
3125 /* State known to have been set by the currently-compiling display
3126 * list. Used to eliminate some redundant state changes.
3134 * Enum for the OpenGL APIs we know about and may support.
3145 * Mesa rendering context.
3147 * This is the central context data structure for Mesa. Almost all
3148 * OpenGL state is contained in this structure.
3149 * Think of this as a base class from which device drivers will derive
3152 * The struct gl_context typedef names this structure.
3156 /** State possibly shared with other contexts in the address space */
3157 struct gl_shared_state
*Shared
;
3159 /** \name API function pointer tables */
3162 struct _glapi_table
*Save
; /**< Display list save functions */
3163 struct _glapi_table
*Exec
; /**< Execute functions */
3164 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3167 struct gl_config Visual
;
3168 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3169 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3170 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3171 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3174 * Device driver function pointer table
3176 struct dd_function_table Driver
;
3178 void *DriverCtx
; /**< Points to device driver context/state */
3180 /** Core/Driver constants */
3181 struct gl_constants Const
;
3183 /** \name The various 4x4 matrix stacks */
3185 struct gl_matrix_stack ModelviewMatrixStack
;
3186 struct gl_matrix_stack ProjectionMatrixStack
;
3187 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3188 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3189 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3192 /** Combined modelview and projection matrix */
3193 GLmatrix _ModelProjectMatrix
;
3195 /** \name Display lists */
3196 struct gl_dlist_state ListState
;
3198 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3199 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3201 /** Extension information */
3202 struct gl_extensions Extensions
;
3205 GLuint VersionMajor
, VersionMinor
;
3206 char *VersionString
;
3208 /** \name State attribute stack (for glPush/PopAttrib) */
3210 GLuint AttribStackDepth
;
3211 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3214 /** \name Renderer attribute groups
3216 * We define a struct for each attribute group to make pushing and popping
3217 * attributes easy. Also it's a good organization.
3220 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3221 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3222 struct gl_current_attrib Current
; /**< Current attributes */
3223 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3224 struct gl_eval_attrib Eval
; /**< Eval attributes */
3225 struct gl_fog_attrib Fog
; /**< Fog attributes */
3226 struct gl_hint_attrib Hint
; /**< Hint attributes */
3227 struct gl_light_attrib Light
; /**< Light attributes */
3228 struct gl_line_attrib Line
; /**< Line attributes */
3229 struct gl_list_attrib List
; /**< List attributes */
3230 struct gl_multisample_attrib Multisample
;
3231 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3232 struct gl_point_attrib Point
; /**< Point attributes */
3233 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3234 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3235 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3236 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3237 struct gl_texture_attrib Texture
; /**< Texture attributes */
3238 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3239 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3242 /** \name Client attribute stack */
3244 GLuint ClientAttribStackDepth
;
3245 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3248 /** \name Client attribute groups */
3250 struct gl_array_attrib Array
; /**< Vertex arrays */
3251 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3252 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3253 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3256 /** \name Other assorted state (not pushed/popped on attribute stack) */
3258 struct gl_pixelmaps PixelMaps
;
3260 struct gl_evaluators EvalMap
; /**< All evaluators */
3261 struct gl_feedback Feedback
; /**< Feedback */
3262 struct gl_selection Select
; /**< Selection */
3264 struct gl_program_state Program
; /**< general program state */
3265 struct gl_vertex_program_state VertexProgram
;
3266 struct gl_fragment_program_state FragmentProgram
;
3267 struct gl_geometry_program_state GeometryProgram
;
3268 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3270 struct gl_shader_state Shader
; /**< GLSL shader object state */
3271 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3273 struct gl_query_state Query
; /**< occlusion, timer queries */
3275 struct gl_transform_feedback TransformFeedback
;
3277 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3278 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3281 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3283 /* GL_EXT_framebuffer_object */
3284 struct gl_renderbuffer
*CurrentRenderbuffer
;
3286 GLenum ErrorValue
; /**< Last error code */
3288 /* GL_ARB_robustness */
3292 * Recognize and silence repeated error debug messages in buggy apps.
3294 const char *ErrorDebugFmtString
;
3295 GLuint ErrorDebugCount
;
3297 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3298 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3300 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3302 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3304 /** \name Derived state */
3306 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3307 * state validation so they need to always be current.
3309 GLbitfield _TriangleCaps
;
3310 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3311 GLfloat _EyeZDir
[3];
3312 GLfloat _ModelViewInvScale
;
3313 GLboolean _NeedEyeCoords
;
3314 GLboolean _ForceEyeCoords
;
3316 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3318 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3319 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3322 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3324 /** \name For debugging/development only */
3326 GLboolean FirstTimeCurrent
;
3329 /** software compression/decompression supported or not */
3330 GLboolean Mesa_DXTn
;
3332 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3335 * Use dp4 (rather than mul/mad) instructions for position
3338 GLboolean mvp_with_dp4
;
3341 * \name Hooks for module contexts.
3343 * These will eventually live in the driver or elsewhere.
3346 void *swrast_context
;
3347 void *swsetup_context
;
3348 void *swtnl_context
;
3350 struct st_context
*st
;
3357 extern int MESA_VERBOSE
;
3358 extern int MESA_DEBUG_FLAGS
;
3359 # define MESA_FUNCTION __FUNCTION__
3361 # define MESA_VERBOSE 0
3362 # define MESA_DEBUG_FLAGS 0
3363 # define MESA_FUNCTION "a function"
3370 /** The MESA_VERBOSE var is a bitmask of these flags */
3373 VERBOSE_VARRAY
= 0x0001,
3374 VERBOSE_TEXTURE
= 0x0002,
3375 VERBOSE_MATERIAL
= 0x0004,
3376 VERBOSE_PIPELINE
= 0x0008,
3377 VERBOSE_DRIVER
= 0x0010,
3378 VERBOSE_STATE
= 0x0020,
3379 VERBOSE_API
= 0x0040,
3380 VERBOSE_DISPLAY_LIST
= 0x0100,
3381 VERBOSE_LIGHTING
= 0x0200,
3382 VERBOSE_PRIMS
= 0x0400,
3383 VERBOSE_VERTS
= 0x0800,
3384 VERBOSE_DISASSEM
= 0x1000,
3385 VERBOSE_DRAW
= 0x2000,
3386 VERBOSE_SWAPBUFFERS
= 0x4000
3390 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3393 DEBUG_ALWAYS_FLUSH
= 0x1
3398 #endif /* MTYPES_H */