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 * Color channel data type.
50 typedef GLubyte GLchan
;
52 #define CHAN_MAXF 255.0F
53 #define CHAN_TYPE GL_UNSIGNED_BYTE
55 typedef GLushort GLchan
;
56 #define CHAN_MAX 65535
57 #define CHAN_MAXF 65535.0F
58 #define CHAN_TYPE GL_UNSIGNED_SHORT
60 typedef GLfloat GLchan
;
62 #define CHAN_MAXF 1.0F
63 #define CHAN_TYPE GL_FLOAT
65 #error "illegal number of color channel bits"
70 * Stencil buffer data type.
73 typedef GLubyte GLstencil
;
74 #elif STENCIL_BITS==16
75 typedef GLushort GLstencil
;
77 # error "illegal number of stencil bits"
82 * \name 64-bit extension of GLbitfield.
85 typedef GLuint64 GLbitfield64
;
87 /** Set a single bit */
88 #define BITFIELD64_BIT(b) (1ULL << (b))
92 * \name Some forward type declarations
95 struct _mesa_HashTable
;
96 struct gl_attrib_node
;
97 struct gl_list_extensions
;
99 struct gl_pixelstore_attrib
;
100 struct gl_program_cache
;
101 struct gl_texture_format
;
102 struct gl_texture_image
;
103 struct gl_texture_object
;
109 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
110 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
111 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
112 #define PRIM_UNKNOWN (GL_POLYGON+3)
116 * Shader stages. Note that these will become 5 with tessellation.
117 * These MUST have the same values as gallium's PIPE_SHADER_*
121 MESA_SHADER_VERTEX
= 0,
122 MESA_SHADER_FRAGMENT
= 1,
123 MESA_SHADER_GEOMETRY
= 2,
124 MESA_SHADER_TYPES
= 3
130 * Indexes for vertex program attributes.
131 * GL_NV_vertex_program aliases generic attributes over the conventional
132 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
133 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
134 * generic attributes are distinct/separate).
139 VERT_ATTRIB_WEIGHT
= 1,
140 VERT_ATTRIB_NORMAL
= 2,
141 VERT_ATTRIB_COLOR0
= 3,
142 VERT_ATTRIB_COLOR1
= 4,
144 VERT_ATTRIB_COLOR_INDEX
= 6,
145 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
146 VERT_ATTRIB_EDGEFLAG
= 7,
147 VERT_ATTRIB_TEX0
= 8,
148 VERT_ATTRIB_TEX1
= 9,
149 VERT_ATTRIB_TEX2
= 10,
150 VERT_ATTRIB_TEX3
= 11,
151 VERT_ATTRIB_TEX4
= 12,
152 VERT_ATTRIB_TEX5
= 13,
153 VERT_ATTRIB_TEX6
= 14,
154 VERT_ATTRIB_TEX7
= 15,
155 VERT_ATTRIB_GENERIC0
= 16,
156 VERT_ATTRIB_GENERIC1
= 17,
157 VERT_ATTRIB_GENERIC2
= 18,
158 VERT_ATTRIB_GENERIC3
= 19,
159 VERT_ATTRIB_GENERIC4
= 20,
160 VERT_ATTRIB_GENERIC5
= 21,
161 VERT_ATTRIB_GENERIC6
= 22,
162 VERT_ATTRIB_GENERIC7
= 23,
163 VERT_ATTRIB_GENERIC8
= 24,
164 VERT_ATTRIB_GENERIC9
= 25,
165 VERT_ATTRIB_GENERIC10
= 26,
166 VERT_ATTRIB_GENERIC11
= 27,
167 VERT_ATTRIB_GENERIC12
= 28,
168 VERT_ATTRIB_GENERIC13
= 29,
169 VERT_ATTRIB_GENERIC14
= 30,
170 VERT_ATTRIB_GENERIC15
= 31,
175 * Bitflags for vertex attributes.
176 * These are used in bitfields in many places.
179 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
180 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
181 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
182 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
183 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
184 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
185 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
186 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
187 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
188 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
189 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
190 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
191 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
192 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
193 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
194 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
195 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
196 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
197 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
198 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
199 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
200 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
201 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
202 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
203 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
204 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
205 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
206 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
207 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
208 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
209 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
210 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
212 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
213 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
218 * Indexes for vertex program result attributes
222 VERT_RESULT_HPOS
= 0,
223 VERT_RESULT_COL0
= 1,
224 VERT_RESULT_COL1
= 2,
225 VERT_RESULT_FOGC
= 3,
226 VERT_RESULT_TEX0
= 4,
227 VERT_RESULT_TEX1
= 5,
228 VERT_RESULT_TEX2
= 6,
229 VERT_RESULT_TEX3
= 7,
230 VERT_RESULT_TEX4
= 8,
231 VERT_RESULT_TEX5
= 9,
232 VERT_RESULT_TEX6
= 10,
233 VERT_RESULT_TEX7
= 11,
234 VERT_RESULT_PSIZ
= 12,
235 VERT_RESULT_BFC0
= 13,
236 VERT_RESULT_BFC1
= 14,
237 VERT_RESULT_EDGE
= 15,
238 VERT_RESULT_VAR0
= 16, /**< shader varying */
239 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
243 /*********************************************/
246 * Indexes for geometry program attributes.
250 GEOM_ATTRIB_POSITION
= 0,
251 GEOM_ATTRIB_COLOR0
= 1,
252 GEOM_ATTRIB_COLOR1
= 2,
253 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
254 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
255 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
256 GEOM_ATTRIB_POINT_SIZE
= 6,
257 GEOM_ATTRIB_CLIP_VERTEX
= 7,
258 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
259 GEOM_ATTRIB_TEX_COORD
= 9,
261 GEOM_ATTRIB_VAR0
= 16,
262 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
266 * Bitflags for geometry attributes.
267 * These are used in bitfields in many places.
270 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
271 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
272 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
273 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
274 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
275 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
276 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
277 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
278 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
279 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
280 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
282 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
287 * Indexes for geometry program result attributes
292 GEOM_RESULT_COL0
= 1,
293 GEOM_RESULT_COL1
= 2,
294 GEOM_RESULT_SCOL0
= 3,
295 GEOM_RESULT_SCOL1
= 4,
296 GEOM_RESULT_FOGC
= 5,
297 GEOM_RESULT_TEX0
= 6,
298 GEOM_RESULT_TEX1
= 7,
299 GEOM_RESULT_TEX2
= 8,
300 GEOM_RESULT_TEX3
= 9,
301 GEOM_RESULT_TEX4
= 10,
302 GEOM_RESULT_TEX5
= 11,
303 GEOM_RESULT_TEX6
= 12,
304 GEOM_RESULT_TEX7
= 13,
305 GEOM_RESULT_PSIZ
= 14,
306 GEOM_RESULT_CLPV
= 15,
307 GEOM_RESULT_PRID
= 16,
308 GEOM_RESULT_LAYR
= 17,
309 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
310 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
311 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
316 * Indexes for fragment program input attributes.
320 FRAG_ATTRIB_WPOS
= 0,
321 FRAG_ATTRIB_COL0
= 1,
322 FRAG_ATTRIB_COL1
= 2,
323 FRAG_ATTRIB_FOGC
= 3,
324 FRAG_ATTRIB_TEX0
= 4,
325 FRAG_ATTRIB_TEX1
= 5,
326 FRAG_ATTRIB_TEX2
= 6,
327 FRAG_ATTRIB_TEX3
= 7,
328 FRAG_ATTRIB_TEX4
= 8,
329 FRAG_ATTRIB_TEX5
= 9,
330 FRAG_ATTRIB_TEX6
= 10,
331 FRAG_ATTRIB_TEX7
= 11,
332 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
333 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
334 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
335 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
339 * Bitflags for fragment program input attributes.
342 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
343 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
344 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
345 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
346 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
347 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
348 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
349 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
350 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
351 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
352 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
353 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
354 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
355 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
356 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
358 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
359 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
361 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
373 * Fragment program results
377 FRAG_RESULT_DEPTH
= 0,
378 FRAG_RESULT_STENCIL
= 1,
379 FRAG_RESULT_COLOR
= 2,
380 FRAG_RESULT_DATA0
= 3,
381 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
386 * Indexes for all renderbuffers
390 /* the four standard color buffers */
398 /* optional aux buffer */
400 /* generic renderbuffers */
413 * Bit flags for all renderbuffers
415 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
416 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
417 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
418 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
419 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
420 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
421 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
422 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
423 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
424 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
425 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
426 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
427 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
428 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
429 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
430 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
431 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
432 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
433 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
436 * Mask of all the color buffer bits (but not accum).
438 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
439 BUFFER_BIT_BACK_LEFT | \
440 BUFFER_BIT_FRONT_RIGHT | \
441 BUFFER_BIT_BACK_RIGHT | \
443 BUFFER_BIT_COLOR0 | \
444 BUFFER_BIT_COLOR1 | \
445 BUFFER_BIT_COLOR2 | \
446 BUFFER_BIT_COLOR3 | \
447 BUFFER_BIT_COLOR4 | \
448 BUFFER_BIT_COLOR5 | \
449 BUFFER_BIT_COLOR6 | \
454 * Framebuffer configuration (aka visual / pixelformat)
455 * Note: some of these fields should be boolean, but it appears that
456 * code in drivers/dri/common/util.c requires int-sized fields.
462 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
463 GLuint doubleBufferMode
;
466 GLboolean haveAccumBuffer
;
467 GLboolean haveDepthBuffer
;
468 GLboolean haveStencilBuffer
;
470 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
471 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
472 GLint rgbBits
; /* total bits for rgb */
473 GLint indexBits
; /* total bits for colorindex */
475 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
483 /* EXT_visual_rating / GLX 1.2 */
486 /* EXT_visual_info / GLX 1.2 */
487 GLint transparentPixel
;
488 /* colors are floats scaled to ints */
489 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
490 GLint transparentIndex
;
492 /* ARB_multisample / SGIS_multisample */
496 /* SGIX_pbuffer / GLX 1.3 */
497 GLint maxPbufferWidth
;
498 GLint maxPbufferHeight
;
499 GLint maxPbufferPixels
;
500 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
501 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
503 /* OML_swap_method */
506 /* EXT_texture_from_pixmap */
507 GLint bindToTextureRgb
;
508 GLint bindToTextureRgba
;
509 GLint bindToMipmapTexture
;
510 GLint bindToTextureTargets
;
513 /* EXT_framebuffer_sRGB */
519 * Data structure for color tables
521 struct gl_color_table
523 GLenum InternalFormat
; /**< The user-specified format */
524 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
525 GLuint Size
; /**< number of entries in table */
526 GLfloat
*TableF
; /**< Color table, floating point values */
527 GLubyte
*TableUB
; /**< Color table, ubyte values */
532 GLubyte LuminanceSize
;
533 GLubyte IntensitySize
;
538 * \name Bit flags used for updating material values.
541 #define MAT_ATTRIB_FRONT_AMBIENT 0
542 #define MAT_ATTRIB_BACK_AMBIENT 1
543 #define MAT_ATTRIB_FRONT_DIFFUSE 2
544 #define MAT_ATTRIB_BACK_DIFFUSE 3
545 #define MAT_ATTRIB_FRONT_SPECULAR 4
546 #define MAT_ATTRIB_BACK_SPECULAR 5
547 #define MAT_ATTRIB_FRONT_EMISSION 6
548 #define MAT_ATTRIB_BACK_EMISSION 7
549 #define MAT_ATTRIB_FRONT_SHININESS 8
550 #define MAT_ATTRIB_BACK_SHININESS 9
551 #define MAT_ATTRIB_FRONT_INDEXES 10
552 #define MAT_ATTRIB_BACK_INDEXES 11
553 #define MAT_ATTRIB_MAX 12
555 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
556 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
557 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
558 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
559 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
560 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
562 #define MAT_INDEX_AMBIENT 0
563 #define MAT_INDEX_DIFFUSE 1
564 #define MAT_INDEX_SPECULAR 2
566 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
567 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
568 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
569 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
570 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
571 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
572 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
573 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
574 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
575 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
576 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
577 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
580 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
581 MAT_BIT_FRONT_AMBIENT | \
582 MAT_BIT_FRONT_DIFFUSE | \
583 MAT_BIT_FRONT_SPECULAR | \
584 MAT_BIT_FRONT_SHININESS | \
585 MAT_BIT_FRONT_INDEXES)
587 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
588 MAT_BIT_BACK_AMBIENT | \
589 MAT_BIT_BACK_DIFFUSE | \
590 MAT_BIT_BACK_SPECULAR | \
591 MAT_BIT_BACK_SHININESS | \
592 MAT_BIT_BACK_INDEXES)
594 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
598 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
599 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
602 * Material shininess lookup table.
606 struct gl_shine_tab
*next
, *prev
;
607 GLfloat tab
[SHINE_TABLE_SIZE
+1];
614 * Light source state.
618 struct gl_light
*next
; /**< double linked list with sentinel */
619 struct gl_light
*prev
;
621 GLfloat Ambient
[4]; /**< ambient color */
622 GLfloat Diffuse
[4]; /**< diffuse color */
623 GLfloat Specular
[4]; /**< specular color */
624 GLfloat EyePosition
[4]; /**< position in eye coordinates */
625 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
626 GLfloat SpotExponent
;
627 GLfloat SpotCutoff
; /**< in degrees */
628 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
629 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
630 GLfloat ConstantAttenuation
;
631 GLfloat LinearAttenuation
;
632 GLfloat QuadraticAttenuation
;
633 GLboolean Enabled
; /**< On/off flag */
636 * \name Derived fields
639 GLbitfield _Flags
; /**< State */
641 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
642 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
643 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
644 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
645 GLfloat _VP_inf_spot_attenuation
;
647 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
648 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
649 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
650 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
651 GLfloat _dli
; /**< CI diffuse light intensity */
652 GLfloat _sli
; /**< CI specular light intensity */
662 GLfloat Ambient
[4]; /**< ambient color */
663 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
664 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
665 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
666 * or GL_SEPARATE_SPECULAR_COLOR */
675 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
680 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
682 struct gl_accum_attrib
684 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
689 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
691 struct gl_colorbuffer_attrib
693 GLuint ClearIndex
; /**< Index to use for glClear */
694 GLclampf ClearColor
[4]; /**< Color to use for glClear */
696 GLuint IndexMask
; /**< Color index write mask */
697 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4];/**< Each flag is 0xff or 0x0 */
699 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
702 * \name alpha testing
705 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
706 GLenum AlphaFunc
; /**< Alpha test function */
707 GLclampf AlphaRef
; /**< Alpha reference value */
714 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
715 GLfloat BlendColor
[4]; /**< Blending color */
718 GLenum SrcRGB
; /**< RGB blend source term */
719 GLenum DstRGB
; /**< RGB blend dest term */
720 GLenum SrcA
; /**< Alpha blend source term */
721 GLenum DstA
; /**< Alpha blend dest term */
722 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
723 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
724 } Blend
[MAX_DRAW_BUFFERS
];
725 /** Are the blend func terms currently different for each buffer/target? */
726 GLboolean _BlendFuncPerBuffer
;
727 /** Are the blend equations currently different for each buffer/target? */
728 GLboolean _BlendEquationPerBuffer
;
735 GLenum LogicOp
; /**< Logic operator */
736 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
737 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
738 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
741 GLboolean DitherFlag
; /**< Dither enable flag */
743 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
744 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
746 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
751 * Current attribute group (GL_CURRENT_BIT).
753 struct gl_current_attrib
756 * \name Current vertex attributes.
757 * \note Values are valid only after FLUSH_VERTICES has been called.
758 * \note Index and Edgeflag current values are stored as floats in the
759 * SIX and SEVEN attribute slots.
761 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
764 * \name Current raster position attributes (always valid).
765 * \note This set of attributes is very similar to the SWvertex struct.
768 GLfloat RasterPos
[4];
769 GLfloat RasterDistance
;
770 GLfloat RasterColor
[4];
771 GLfloat RasterSecondaryColor
[4];
772 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
773 GLboolean RasterPosValid
;
779 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
781 struct gl_depthbuffer_attrib
783 GLenum Func
; /**< Function for depth buffer compare */
784 GLclampd Clear
; /**< Value to clear depth buffer to */
785 GLboolean Test
; /**< Depth buffering enabled flag */
786 GLboolean Mask
; /**< Depth buffer writable? */
787 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
788 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
793 * Evaluator attribute group (GL_EVAL_BIT).
795 struct gl_eval_attrib
801 GLboolean Map1Color4
;
803 GLboolean Map1Normal
;
804 GLboolean Map1TextureCoord1
;
805 GLboolean Map1TextureCoord2
;
806 GLboolean Map1TextureCoord3
;
807 GLboolean Map1TextureCoord4
;
808 GLboolean Map1Vertex3
;
809 GLboolean Map1Vertex4
;
810 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
811 GLboolean Map2Color4
;
813 GLboolean Map2Normal
;
814 GLboolean Map2TextureCoord1
;
815 GLboolean Map2TextureCoord2
;
816 GLboolean Map2TextureCoord3
;
817 GLboolean Map2TextureCoord4
;
818 GLboolean Map2Vertex3
;
819 GLboolean Map2Vertex4
;
820 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
821 GLboolean AutoNormal
;
825 * \name Map Grid endpoints and divisions and calculated du values
829 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
830 GLint MapGrid2un
, MapGrid2vn
;
831 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
832 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
838 * Fog attribute group (GL_FOG_BIT).
842 GLboolean Enabled
; /**< Fog enabled flag */
843 GLfloat Color
[4]; /**< Fog color */
844 GLfloat Density
; /**< Density >= 0.0 */
845 GLfloat Start
; /**< Start distance in eye coords */
846 GLfloat End
; /**< End distance in eye coords */
847 GLfloat Index
; /**< Fog index */
848 GLenum Mode
; /**< Fog mode */
849 GLboolean ColorSumEnabled
;
850 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
851 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
856 * \brief Layout qualifiers for gl_FragDepth.
858 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
859 * a layout qualifier.
861 * \see enum ir_depth_layout
863 enum gl_frag_depth_layout
{
864 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
865 FRAG_DEPTH_LAYOUT_ANY
,
866 FRAG_DEPTH_LAYOUT_GREATER
,
867 FRAG_DEPTH_LAYOUT_LESS
,
868 FRAG_DEPTH_LAYOUT_UNCHANGED
873 * Hint attribute group (GL_HINT_BIT).
875 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
877 struct gl_hint_attrib
879 GLenum PerspectiveCorrection
;
882 GLenum PolygonSmooth
;
884 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
885 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
886 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
887 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
894 #define LIGHT_SPOT 0x1
895 #define LIGHT_LOCAL_VIEWER 0x2
896 #define LIGHT_POSITIONAL 0x4
897 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
902 * Lighting attribute group (GL_LIGHT_BIT).
904 struct gl_light_attrib
906 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
907 struct gl_lightmodel Model
; /**< Lighting model */
910 * Must flush FLUSH_VERTICES before referencing:
913 struct gl_material Material
; /**< Includes front & back values */
916 GLboolean Enabled
; /**< Lighting enabled flag */
917 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
918 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
919 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
920 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
921 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
922 GLboolean ColorMaterialEnabled
;
923 GLenum ClampVertexColor
;
925 struct gl_light EnabledList
; /**< List sentinel */
928 * Derived state for optimizations:
931 GLboolean _NeedEyeCoords
;
932 GLboolean _NeedVertices
; /**< Use fast shader? */
933 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
934 GLfloat _BaseColor
[2][3];
940 * Line attribute group (GL_LINE_BIT).
942 struct gl_line_attrib
944 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
945 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
946 GLushort StipplePattern
; /**< Stipple pattern */
947 GLint StippleFactor
; /**< Stipple repeat factor */
948 GLfloat Width
; /**< Line width */
953 * Display list attribute group (GL_LIST_BIT).
955 struct gl_list_attrib
962 * Multisample attribute group (GL_MULTISAMPLE_BIT).
964 struct gl_multisample_attrib
967 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
968 GLboolean SampleAlphaToCoverage
;
969 GLboolean SampleAlphaToOne
;
970 GLboolean SampleCoverage
;
971 GLfloat SampleCoverageValue
;
972 GLboolean SampleCoverageInvert
;
977 * A pixelmap (see glPixelMap)
982 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
983 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
988 * Collection of all pixelmaps
992 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
993 struct gl_pixelmap GtoG
;
994 struct gl_pixelmap BtoB
;
995 struct gl_pixelmap AtoA
;
996 struct gl_pixelmap ItoR
;
997 struct gl_pixelmap ItoG
;
998 struct gl_pixelmap ItoB
;
999 struct gl_pixelmap ItoA
;
1000 struct gl_pixelmap ItoI
;
1001 struct gl_pixelmap StoS
;
1006 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1008 struct gl_pixel_attrib
1010 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1012 /*--- Begin Pixel Transfer State ---*/
1013 /* Fields are in the order in which they're applied... */
1015 /** Scale & Bias (index shift, offset) */
1017 GLfloat RedBias
, RedScale
;
1018 GLfloat GreenBias
, GreenScale
;
1019 GLfloat BlueBias
, BlueScale
;
1020 GLfloat AlphaBias
, AlphaScale
;
1021 GLfloat DepthBias
, DepthScale
;
1022 GLint IndexShift
, IndexOffset
;
1026 /* Note: actual pixel maps are not part of this attrib group */
1027 GLboolean MapColorFlag
;
1028 GLboolean MapStencilFlag
;
1030 /*--- End Pixel Transfer State ---*/
1033 GLfloat ZoomX
, ZoomY
;
1035 /** GL_SGI_texture_color_table */
1036 GLfloat TextureColorTableScale
[4]; /**< RGBA */
1037 GLfloat TextureColorTableBias
[4]; /**< RGBA */
1042 * Point attribute group (GL_POINT_BIT).
1044 struct gl_point_attrib
1046 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1047 GLfloat Size
; /**< User-specified point size */
1048 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1049 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1050 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1051 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1052 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1053 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1054 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1055 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1060 * Polygon attribute group (GL_POLYGON_BIT).
1062 struct gl_polygon_attrib
1064 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1065 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1066 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1067 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1068 GLboolean CullFlag
; /**< Culling on/off flag */
1069 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1070 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1071 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1072 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1073 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1074 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1075 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1076 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1081 * Scissor attributes (GL_SCISSOR_BIT).
1083 struct gl_scissor_attrib
1085 GLboolean Enabled
; /**< Scissor test enabled? */
1086 GLint X
, Y
; /**< Lower left corner of box */
1087 GLsizei Width
, Height
; /**< Size of box */
1092 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1094 * Three sets of stencil data are tracked so that OpenGL 2.0,
1095 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1096 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1097 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1098 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1099 * GL_EXT_stencil_two_side GL_BACK state.
1101 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1102 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1104 * The derived value \c _TestTwoSide is set when the front-face and back-face
1105 * stencil state are different.
1107 struct gl_stencil_attrib
1109 GLboolean Enabled
; /**< Enabled flag */
1110 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1111 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1112 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1113 GLboolean _TestTwoSide
;
1114 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1115 GLenum Function
[3]; /**< Stencil function */
1116 GLenum FailFunc
[3]; /**< Fail function */
1117 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1118 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1119 GLint Ref
[3]; /**< Reference value */
1120 GLuint ValueMask
[3]; /**< Value mask */
1121 GLuint WriteMask
[3]; /**< Write mask */
1122 GLuint Clear
; /**< Clear value */
1127 * An index for each type of texture object. These correspond to the GL
1128 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1129 * Note: the order is from highest priority to lowest priority.
1133 TEXTURE_2D_ARRAY_INDEX
,
1134 TEXTURE_1D_ARRAY_INDEX
,
1145 * Bit flags for each type of texture object
1146 * Used for Texture.Unit[]._ReallyEnabled flags.
1149 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1150 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1151 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1152 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1153 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1154 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1155 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1160 * TexGenEnabled flags.
1167 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1172 * Bit flag versions of the corresponding GL_ constants.
1175 #define TEXGEN_SPHERE_MAP 0x1
1176 #define TEXGEN_OBJ_LINEAR 0x2
1177 #define TEXGEN_EYE_LINEAR 0x4
1178 #define TEXGEN_REFLECTION_MAP_NV 0x8
1179 #define TEXGEN_NORMAL_MAP_NV 0x10
1181 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1182 TEXGEN_REFLECTION_MAP_NV | \
1183 TEXGEN_NORMAL_MAP_NV)
1184 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1185 TEXGEN_REFLECTION_MAP_NV | \
1186 TEXGEN_NORMAL_MAP_NV | \
1192 /** Tex-gen enabled for texture unit? */
1193 #define ENABLE_TEXGEN(unit) (1 << (unit))
1195 /** Non-identity texture matrix for texture unit? */
1196 #define ENABLE_TEXMAT(unit) (1 << (unit))
1200 * Texel fetch function prototype. We use texel fetch functions to
1201 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1202 * texture images. These functions help to isolate us from the gritty
1203 * details of all the various texture image encodings.
1205 * \param texImage texture image.
1206 * \param col texel column.
1207 * \param row texel row.
1208 * \param img texel image level/layer.
1209 * \param texelOut output texel (up to 4 GLchans)
1211 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1212 GLint col
, GLint row
, GLint img
,
1216 * As above, but returns floats.
1217 * Used for depth component images and for upcoming signed/float
1220 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1221 GLint col
, GLint row
, GLint img
,
1222 GLfloat
*texelOut
);
1225 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1226 GLint col
, GLint row
, GLint img
,
1231 * Texture image state. Describes the dimensions of a texture image,
1232 * the texel format and pointers to Texel Fetch functions.
1234 struct gl_texture_image
1236 GLint InternalFormat
; /**< Internal format as given by the user */
1237 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1238 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1239 * GL_INTENSITY, GL_COLOR_INDEX,
1240 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1241 * only. Used for choosing TexEnv arithmetic.
1243 gl_format TexFormat
; /**< The actual texture memory format */
1245 GLuint Border
; /**< 0 or 1 */
1246 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1247 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1248 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1249 GLuint Width2
; /**< = Width - 2*Border */
1250 GLuint Height2
; /**< = Height - 2*Border */
1251 GLuint Depth2
; /**< = Depth - 2*Border */
1252 GLuint WidthLog2
; /**< = log2(Width2) */
1253 GLuint HeightLog2
; /**< = log2(Height2) */
1254 GLuint DepthLog2
; /**< = log2(Depth2) */
1255 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1256 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1257 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1258 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1259 GLboolean IsClientData
; /**< Data owned by client? */
1260 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1262 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1264 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1265 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1267 GLuint RowStride
; /**< Padded width in units of texels */
1268 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1269 each 2D slice in 'Data', in texels */
1270 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1273 * \name For device driver:
1276 void *DriverData
; /**< Arbitrary device driver data */
1282 * Indexes for cube map faces.
1297 * Texture object state. Contains the array of mipmap images, border color,
1298 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1301 struct gl_texture_object
1303 _glthread_Mutex Mutex
; /**< for thread safety */
1304 GLint RefCount
; /**< reference count */
1305 GLuint Name
; /**< the user-visible texture object ID */
1306 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1307 GLfloat Priority
; /**< in [0,1] */
1312 } BorderColor
; /**< Interpreted according to texture format */
1313 GLenum WrapS
; /**< S-axis texture image wrap mode */
1314 GLenum WrapT
; /**< T-axis texture image wrap mode */
1315 GLenum WrapR
; /**< R-axis texture image wrap mode */
1316 GLenum MinFilter
; /**< minification filter */
1317 GLenum MagFilter
; /**< magnification filter */
1318 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1319 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1320 GLfloat LodBias
; /**< OpenGL 1.4 */
1321 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1322 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1323 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1324 GLenum CompareMode
; /**< GL_ARB_shadow */
1325 GLenum CompareFunc
; /**< GL_ARB_shadow */
1326 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1327 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1328 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1329 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1330 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1331 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1332 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1333 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1334 GLboolean _Complete
; /**< Is texture object complete? */
1335 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1336 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1337 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1339 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1340 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1342 /** GL_EXT_paletted_texture */
1343 struct gl_color_table Palette
;
1346 * \name For device driver.
1347 * Note: instead of attaching driver data to this pointer, it's preferable
1348 * to instead use this struct as a base class for your own texture object
1349 * class. Driver->NewTextureObject() can be used to implement the
1352 void *DriverData
; /**< Arbitrary device driver data */
1356 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1357 #define MAX_COMBINER_TERMS 4
1361 * Texture combine environment state.
1363 struct gl_tex_env_combine_state
1365 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1366 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1367 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1368 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1369 GLenum SourceA
[MAX_COMBINER_TERMS
];
1370 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1371 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1372 GLenum OperandA
[MAX_COMBINER_TERMS
];
1373 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1374 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1375 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1376 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1381 * Texture coord generation state.
1385 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1386 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1387 GLfloat ObjectPlane
[4];
1388 GLfloat EyePlane
[4];
1393 * Texture unit state. Contains enable flags, texture environment/function/
1394 * combiners, texgen state, pointers to current texture objects and
1395 * post-filter color tables.
1397 struct gl_texture_unit
1399 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1400 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1402 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1403 GLfloat EnvColor
[4];
1405 struct gl_texgen GenS
;
1406 struct gl_texgen GenT
;
1407 struct gl_texgen GenR
;
1408 struct gl_texgen GenQ
;
1409 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1410 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1412 GLfloat LodBias
; /**< for biasing mipmap levels */
1414 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1417 * \name GL_EXT_texture_env_combine
1419 struct gl_tex_env_combine_state Combine
;
1422 * Derived state based on \c EnvMode and the \c BaseFormat of the
1423 * currently enabled texture.
1425 struct gl_tex_env_combine_state _EnvMode
;
1428 * Currently enabled combiner state. This will point to either
1429 * \c Combine or \c _EnvMode.
1431 struct gl_tex_env_combine_state
*_CurrentCombine
;
1433 /** Current texture object pointers */
1434 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1436 /** Points to highest priority, complete and enabled texture object */
1437 struct gl_texture_object
*_Current
;
1439 /** GL_SGI_texture_color_table */
1441 struct gl_color_table ColorTable
;
1442 struct gl_color_table ProxyColorTable
;
1443 GLboolean ColorTableEnabled
;
1449 * Texture attribute group (GL_TEXTURE_BIT).
1451 struct gl_texture_attrib
1453 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1454 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1456 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1458 /** GL_ARB_seamless_cubemap */
1459 GLboolean CubeMapSeamless
;
1461 /** GL_EXT_shared_texture_palette */
1462 GLboolean SharedPalette
;
1463 struct gl_color_table Palette
;
1465 /** Texture units/samplers used by vertex or fragment texturing */
1466 GLbitfield _EnabledUnits
;
1468 /** Texture coord units/sets used for fragment texturing */
1469 GLbitfield _EnabledCoordUnits
;
1471 /** Texture coord units that have texgen enabled */
1472 GLbitfield _TexGenEnabled
;
1474 /** Texture coord units that have non-identity matrices */
1475 GLbitfield _TexMatEnabled
;
1477 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1478 GLbitfield _GenFlags
;
1483 * Transformation attribute group (GL_TRANSFORM_BIT).
1485 struct gl_transform_attrib
1487 GLenum MatrixMode
; /**< Matrix mode */
1488 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1489 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1490 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1491 GLboolean Normalize
; /**< Normalize all normals? */
1492 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1493 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1494 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1496 GLfloat CullEyePos
[4];
1497 GLfloat CullObjPos
[4];
1502 * Viewport attribute group (GL_VIEWPORT_BIT).
1504 struct gl_viewport_attrib
1506 GLint X
, Y
; /**< position */
1507 GLsizei Width
, Height
; /**< size */
1508 GLfloat Near
, Far
; /**< Depth buffer range */
1509 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1514 * GL_ARB_vertex/pixel_buffer_object buffer object
1516 struct gl_buffer_object
1518 _glthread_Mutex Mutex
;
1521 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1522 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1523 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1524 /** Fields describing a mapped buffer */
1526 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1527 GLvoid
*Pointer
; /**< User-space address of mapping */
1528 GLintptr Offset
; /**< Mapped offset */
1529 GLsizeiptr Length
; /**< Mapped length */
1531 GLboolean Written
; /**< Ever written to? (for debugging) */
1532 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1537 * Client pixel packing/unpacking attributes
1539 struct gl_pixelstore_attrib
1547 GLboolean SwapBytes
;
1549 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1550 GLboolean Invert
; /**< GL_MESA_pack_invert */
1551 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1556 * Client vertex array attributes
1558 struct gl_client_array
1560 GLint Size
; /**< components per element (1,2,3,4) */
1561 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1562 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1563 GLsizei Stride
; /**< user-specified stride */
1564 GLsizei StrideB
; /**< actual stride in bytes */
1565 const GLubyte
*Ptr
; /**< Points to array data */
1566 GLboolean Enabled
; /**< Enabled flag is a boolean */
1567 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1568 GLboolean Integer
; /**< Integer-valued? */
1569 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1570 GLuint _ElementSize
; /**< size of each element in bytes */
1572 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1573 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1578 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1579 * extension, but a nice encapsulation in any case.
1581 struct gl_array_object
1583 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1587 _glthread_Mutex Mutex
;
1588 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1590 /** Conventional vertex arrays */
1592 struct gl_client_array Vertex
;
1593 struct gl_client_array Weight
;
1594 struct gl_client_array Normal
;
1595 struct gl_client_array Color
;
1596 struct gl_client_array SecondaryColor
;
1597 struct gl_client_array FogCoord
;
1598 struct gl_client_array Index
;
1599 struct gl_client_array EdgeFlag
;
1600 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1601 struct gl_client_array PointSize
;
1605 * Generic arrays for vertex programs/shaders.
1606 * For NV vertex programs, these attributes alias and take priority
1607 * over the conventional attribs above. For ARB vertex programs and
1608 * GLSL vertex shaders, these attributes are separate.
1610 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1612 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1613 GLbitfield _Enabled
;
1616 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1617 * we can determine the max legal (in bounds) glDrawElements array index.
1624 * Vertex array state
1626 struct gl_array_attrib
1628 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1629 struct gl_array_object
*ArrayObj
;
1631 /** The default vertex array object */
1632 struct gl_array_object
*DefaultArrayObj
;
1634 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1635 struct _mesa_HashTable
*Objects
;
1637 GLint ActiveTexture
; /**< Client Active Texture */
1638 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1639 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1641 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1642 GLboolean PrimitiveRestart
;
1643 GLuint RestartIndex
;
1645 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1646 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1648 /* GL_ARB_vertex_buffer_object */
1649 struct gl_buffer_object
*ArrayBufferObj
;
1650 struct gl_buffer_object
*ElementArrayBufferObj
;
1655 * Feedback buffer state
1660 GLbitfield _Mask
; /**< FB_* bits */
1668 * Selection buffer state
1672 GLuint
*Buffer
; /**< selection buffer */
1673 GLuint BufferSize
; /**< size of the selection buffer */
1674 GLuint BufferCount
; /**< number of values in the selection buffer */
1675 GLuint Hits
; /**< number of records in the selection buffer */
1676 GLuint NameStackDepth
; /**< name stack depth */
1677 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1678 GLboolean HitFlag
; /**< hit flag */
1679 GLfloat HitMinZ
; /**< minimum hit depth */
1680 GLfloat HitMaxZ
; /**< maximum hit depth */
1685 * 1-D Evaluator control points
1689 GLuint Order
; /**< Number of control points */
1690 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1691 GLfloat
*Points
; /**< Points to contiguous control points */
1696 * 2-D Evaluator control points
1700 GLuint Uorder
; /**< Number of control points in U dimension */
1701 GLuint Vorder
; /**< Number of control points in V dimension */
1704 GLfloat
*Points
; /**< Points to contiguous control points */
1709 * All evaluator control point state
1711 struct gl_evaluators
1717 struct gl_1d_map Map1Vertex3
;
1718 struct gl_1d_map Map1Vertex4
;
1719 struct gl_1d_map Map1Index
;
1720 struct gl_1d_map Map1Color4
;
1721 struct gl_1d_map Map1Normal
;
1722 struct gl_1d_map Map1Texture1
;
1723 struct gl_1d_map Map1Texture2
;
1724 struct gl_1d_map Map1Texture3
;
1725 struct gl_1d_map Map1Texture4
;
1726 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1733 struct gl_2d_map Map2Vertex3
;
1734 struct gl_2d_map Map2Vertex4
;
1735 struct gl_2d_map Map2Index
;
1736 struct gl_2d_map Map2Color4
;
1737 struct gl_2d_map Map2Normal
;
1738 struct gl_2d_map Map2Texture1
;
1739 struct gl_2d_map Map2Texture2
;
1740 struct gl_2d_map Map2Texture3
;
1741 struct gl_2d_map Map2Texture4
;
1742 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1748 * Names of the various vertex/fragment program register files, etc.
1750 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1751 * All values should fit in a 4-bit field.
1753 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1754 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1755 * be "uniform" variables since they can only be set outside glBegin/End.
1756 * They're also all stored in the same Parameters array.
1760 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1761 PROGRAM_INPUT
, /**< machine->Inputs[] */
1762 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1763 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1764 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1765 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1766 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1767 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1768 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1769 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1770 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1771 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1772 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1773 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1774 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1780 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1781 * one of these values.
1785 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1786 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1787 SYSTEM_VALUE_MAX
/**< Number of values */
1791 /** Vertex and fragment instructions */
1792 struct prog_instruction
;
1793 struct gl_program_parameter_list
;
1794 struct gl_uniform_list
;
1798 * Base class for any kind of program object
1803 GLubyte
*String
; /**< Null-terminated program text */
1805 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1806 GLenum Format
; /**< String encoding format */
1809 struct prog_instruction
*Instructions
;
1811 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1812 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1813 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1814 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1815 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1816 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1817 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1818 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1821 /** Named parameters, constants, etc. from program text */
1822 struct gl_program_parameter_list
*Parameters
;
1823 /** Numbered local parameters */
1824 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1826 /** Vertex/fragment shader varying vars */
1827 struct gl_program_parameter_list
*Varying
;
1828 /** Vertex program user-defined attributes */
1829 struct gl_program_parameter_list
*Attributes
;
1831 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1832 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1833 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1834 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1836 /** Bitmask of which register files are read/written with indirect
1837 * addressing. Mask of (1 << PROGRAM_x) bits.
1839 GLbitfield IndirectRegisterFiles
;
1841 /** Logical counts */
1843 GLuint NumInstructions
;
1844 GLuint NumTemporaries
;
1845 GLuint NumParameters
;
1846 GLuint NumAttributes
;
1847 GLuint NumAddressRegs
;
1848 GLuint NumAluInstructions
;
1849 GLuint NumTexInstructions
;
1850 GLuint NumTexIndirections
;
1852 /** Native, actual h/w counts */
1854 GLuint NumNativeInstructions
;
1855 GLuint NumNativeTemporaries
;
1856 GLuint NumNativeParameters
;
1857 GLuint NumNativeAttributes
;
1858 GLuint NumNativeAddressRegs
;
1859 GLuint NumNativeAluInstructions
;
1860 GLuint NumNativeTexInstructions
;
1861 GLuint NumNativeTexIndirections
;
1866 /** Vertex program object */
1867 struct gl_vertex_program
1869 struct gl_program Base
; /**< base class */
1870 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1871 GLboolean IsPositionInvariant
;
1875 /** Geometry program object */
1876 struct gl_geometry_program
1878 struct gl_program Base
; /**< base class */
1881 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1882 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1883 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1887 /** Fragment program object */
1888 struct gl_fragment_program
1890 struct gl_program Base
; /**< base class */
1892 GLboolean UsesKill
; /**< shader uses KIL instruction */
1893 GLboolean OriginUpperLeft
;
1894 GLboolean PixelCenterInteger
;
1895 enum gl_frag_depth_layout FragDepthLayout
;
1900 * State common to vertex and fragment programs.
1902 struct gl_program_state
1904 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1905 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1910 * Context state for vertex programs.
1912 struct gl_vertex_program_state
1914 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1915 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1916 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1917 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1918 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1920 /** Currently enabled and valid vertex program (including internal
1921 * programs, user-defined vertex programs and GLSL vertex shaders).
1922 * This is the program we must use when rendering.
1924 struct gl_vertex_program
*_Current
;
1926 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1928 /* For GL_NV_vertex_program only: */
1929 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1930 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1932 /** Should fixed-function T&L be implemented with a vertex prog? */
1933 GLboolean _MaintainTnlProgram
;
1935 /** Program to emulate fixed-function T&L (see above) */
1936 struct gl_vertex_program
*_TnlProgram
;
1938 /** Cache of fixed-function programs */
1939 struct gl_program_cache
*Cache
;
1941 GLboolean _Overriden
;
1946 * Context state for geometry programs.
1948 struct gl_geometry_program_state
1950 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1951 GLboolean _Enabled
; /**< Enabled and valid program? */
1952 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1954 /** Currently enabled and valid program (including internal programs
1955 * and compiled shader programs).
1957 struct gl_geometry_program
*_Current
;
1959 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1961 /** Cache of fixed-function programs */
1962 struct gl_program_cache
*Cache
;
1966 * Context state for fragment programs.
1968 struct gl_fragment_program_state
1970 GLboolean Enabled
; /**< User-set fragment program enable flag */
1971 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1972 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1974 /** Currently enabled and valid fragment program (including internal
1975 * programs, user-defined fragment programs and GLSL fragment shaders).
1976 * This is the program we must use when rendering.
1978 struct gl_fragment_program
*_Current
;
1980 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1982 /** Should fixed-function texturing be implemented with a fragment prog? */
1983 GLboolean _MaintainTexEnvProgram
;
1985 /** Program to emulate fixed-function texture env/combine (see above) */
1986 struct gl_fragment_program
*_TexEnvProgram
;
1988 /** Cache of fixed-function programs */
1989 struct gl_program_cache
*Cache
;
1994 * ATI_fragment_shader runtime state
1996 #define ATI_FS_INPUT_PRIMARY 0
1997 #define ATI_FS_INPUT_SECONDARY 1
1999 struct atifs_instruction
;
2000 struct atifs_setupinst
;
2003 * ATI fragment shader
2005 struct ati_fragment_shader
2009 struct atifs_instruction
*Instructions
[2];
2010 struct atifs_setupinst
*SetupInst
[2];
2011 GLfloat Constants
[8][4];
2012 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2013 GLubyte numArithInstr
[2];
2014 GLubyte regsAssigned
[2];
2015 GLubyte NumPasses
; /**< 1 or 2 */
2017 GLubyte last_optype
;
2018 GLboolean interpinp1
;
2024 * Context state for GL_ATI_fragment_shader
2026 struct gl_ati_fragment_shader_state
2029 GLboolean _Enabled
; /**< enabled and valid shader? */
2030 GLboolean Compiling
;
2031 GLfloat GlobalConstants
[8][4];
2032 struct ati_fragment_shader
*Current
;
2037 * Occlusion/timer query object.
2039 struct gl_query_object
2041 GLenum Target
; /**< The query target, when active */
2042 GLuint Id
; /**< hash table ID/name */
2043 GLuint64EXT Result
; /**< the counter */
2044 GLboolean Active
; /**< inside Begin/EndQuery */
2045 GLboolean Ready
; /**< result is ready? */
2050 * Context state for query objects.
2052 struct gl_query_state
2054 struct _mesa_HashTable
*QueryObjects
;
2055 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2056 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2058 /** GL_NV_conditional_render */
2059 struct gl_query_object
*CondRenderQuery
;
2061 /** GL_EXT_transform_feedback */
2062 struct gl_query_object
*PrimitivesGenerated
;
2063 struct gl_query_object
*PrimitivesWritten
;
2065 /** GL_ARB_timer_query */
2066 struct gl_query_object
*TimeElapsed
;
2068 GLenum CondRenderMode
;
2072 /** Sync object state */
2073 struct gl_sync_object
{
2074 struct simple_node link
;
2075 GLenum Type
; /**< GL_SYNC_FENCE */
2076 GLuint Name
; /**< Fence name */
2077 GLint RefCount
; /**< Reference count */
2078 GLboolean DeletePending
; /**< Object was deleted while there were still
2079 * live references (e.g., sync not yet finished)
2081 GLenum SyncCondition
;
2082 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2083 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2087 /** Set by #pragma directives */
2088 struct gl_sl_pragmas
2090 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2091 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2092 GLboolean Optimize
; /**< defaults on */
2093 GLboolean Debug
; /**< defaults off */
2098 * A GLSL vertex or fragment shader object.
2102 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2103 GLuint Name
; /**< AKA the handle */
2104 GLint RefCount
; /**< Reference count */
2105 GLboolean DeletePending
;
2106 GLboolean CompileStatus
;
2107 const GLchar
*Source
; /**< Source code string */
2108 GLuint SourceChecksum
; /**< for debug/logging purposes */
2109 struct gl_program
*Program
; /**< Post-compile assembly code */
2111 struct gl_sl_pragmas Pragmas
;
2113 unsigned Version
; /**< GLSL version used for linking */
2115 struct exec_list
*ir
;
2116 struct glsl_symbol_table
*symbols
;
2118 /** Shaders containing built-in functions that are used for linking. */
2119 struct gl_shader
*builtins_to_link
[16];
2120 unsigned num_builtins_to_link
;
2125 * A GLSL program object.
2126 * Basically a linked collection of vertex and fragment shaders.
2128 struct gl_shader_program
2130 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2131 GLuint Name
; /**< aka handle or ID */
2132 GLint RefCount
; /**< Reference count */
2133 GLboolean DeletePending
;
2135 GLuint NumShaders
; /**< number of attached shaders */
2136 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2138 /** User-defined attribute bindings (glBindAttribLocation) */
2139 struct gl_program_parameter_list
*Attributes
;
2141 /** Transform feedback varyings */
2145 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2146 } TransformFeedback
;
2148 /** Geometry shader state - copied into gl_geometry_program at link time */
2151 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2152 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2153 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2156 /* post-link info: */
2157 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2158 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2159 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2160 struct gl_uniform_list
*Uniforms
;
2161 struct gl_program_parameter_list
*Varying
;
2162 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2163 GLboolean Validated
;
2164 GLboolean _Used
; /**< Ever used for drawing? */
2167 unsigned Version
; /**< GLSL version used for linking */
2170 * Per-stage shaders resulting from the first stage of linking.
2172 * Set of linked shaders for this program. The array is accessed using the
2173 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2176 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2180 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2181 #define GLSL_LOG 0x2 /**< Write shaders to files */
2182 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2183 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2184 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2185 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2186 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2187 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2191 * Context state for GLSL vertex/fragment shaders.
2193 struct gl_shader_state
2196 * Programs used for rendering
2198 * There is a separate program set for each shader stage. If
2199 * GL_EXT_separate_shader_objects is not supported, each of these must point
2200 * to \c NULL or to the same program.
2202 struct gl_shader_program
*CurrentVertexProgram
;
2203 struct gl_shader_program
*CurrentGeometryProgram
;
2204 struct gl_shader_program
*CurrentFragmentProgram
;
2207 * Program used by glUniform calls.
2209 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2211 struct gl_shader_program
*ActiveProgram
;
2215 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2219 * Compiler options for a single GLSL shaders type
2221 struct gl_shader_compiler_options
2223 /** Driver-selectable options: */
2224 GLboolean EmitCondCodes
; /**< Use condition codes? */
2225 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2227 * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't
2228 * support control flow.
2230 GLboolean EmitNoIfs
;
2231 GLboolean EmitNoLoops
;
2232 GLboolean EmitNoFunctions
;
2233 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2234 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2235 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2236 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2239 * \name Forms of indirect addressing the driver cannot do.
2242 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2243 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2244 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2245 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2248 GLuint MaxUnrollIterations
;
2250 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2254 * Transform feedback object state
2256 struct gl_transform_feedback_object
2258 GLuint Name
; /**< AKA the object ID */
2260 GLboolean Active
; /**< Is transform feedback enabled? */
2261 GLboolean Paused
; /**< Is transform feedback paused? */
2263 /** The feedback buffers */
2264 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2265 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2267 /** Start of feedback data in dest buffer */
2268 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2269 /** Max data to put into dest buffer (in bytes) */
2270 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2275 * Context state for transform feedback.
2277 struct gl_transform_feedback
2279 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2281 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2283 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2284 struct gl_buffer_object
*CurrentBuffer
;
2286 /** The table of all transform feedback objects */
2287 struct _mesa_HashTable
*Objects
;
2289 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2290 struct gl_transform_feedback_object
*CurrentObject
;
2292 /** The default xform-fb object (Name==0) */
2293 struct gl_transform_feedback_object
*DefaultObject
;
2299 * State which can be shared by multiple contexts:
2301 struct gl_shared_state
2303 _glthread_Mutex Mutex
; /**< for thread safety */
2304 GLint RefCount
; /**< Reference count */
2305 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2306 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2308 /** Default texture objects (shared by all texture units) */
2309 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2311 /** Fallback texture used when a bound texture is incomplete */
2312 struct gl_texture_object
*FallbackTex
;
2315 * \name Thread safety and statechange notification for texture
2318 * \todo Improve the granularity of locking.
2321 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2322 GLuint TextureStateStamp
; /**< state notification for shared tex */
2325 /** Default buffer object for vertex arrays that aren't in VBOs */
2326 struct gl_buffer_object
*NullBufferObj
;
2329 * \name Vertex/geometry/fragment programs
2332 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2333 struct gl_vertex_program
*DefaultVertexProgram
;
2334 struct gl_fragment_program
*DefaultFragmentProgram
;
2335 struct gl_geometry_program
*DefaultGeometryProgram
;
2338 /* GL_ATI_fragment_shader */
2339 struct _mesa_HashTable
*ATIShaders
;
2340 struct ati_fragment_shader
*DefaultFragmentShader
;
2342 struct _mesa_HashTable
*BufferObjects
;
2344 /** Table of both gl_shader and gl_shader_program objects */
2345 struct _mesa_HashTable
*ShaderObjects
;
2347 /* GL_EXT_framebuffer_object */
2348 struct _mesa_HashTable
*RenderBuffers
;
2349 struct _mesa_HashTable
*FrameBuffers
;
2352 struct simple_node SyncObjects
;
2354 void *DriverData
; /**< Device driver shared state */
2361 * A renderbuffer stores colors or depth values or stencil values.
2362 * A framebuffer object will have a collection of these.
2363 * Data are read/written to the buffer with a handful of Get/Put functions.
2365 * Instances of this object are allocated with the Driver's NewRenderbuffer
2366 * hook. Drivers will likely wrap this class inside a driver-specific
2367 * class to simulate inheritance.
2369 struct gl_renderbuffer
2371 #define RB_MAGIC 0xaabbccdd
2372 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2373 _glthread_Mutex Mutex
; /**< for thread safety */
2374 GLuint ClassID
; /**< Useful for drivers */
2377 GLuint Width
, Height
;
2378 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2380 GLenum InternalFormat
; /**< The user-specified format */
2381 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2382 GL_STENCIL_INDEX. */
2383 gl_format Format
; /**< The actual renderbuffer memory format */
2387 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2388 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2390 /* Used to wrap one renderbuffer around another: */
2391 struct gl_renderbuffer
*Wrapped
;
2393 /* Delete this renderbuffer */
2394 void (*Delete
)(struct gl_renderbuffer
*rb
);
2396 /* Allocate new storage for this renderbuffer */
2397 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2398 GLenum internalFormat
,
2399 GLuint width
, GLuint height
);
2401 /* Lock/Unlock are called before/after calling the Get/Put functions.
2402 * Not sure this is the right place for these yet.
2403 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2404 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2407 /* Return a pointer to the element/pixel at (x,y).
2408 * Should return NULL if the buffer memory can't be directly addressed.
2410 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2413 /* Get/Read a row of values.
2414 * The values will be of format _BaseFormat and type DataType.
2416 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2417 GLint x
, GLint y
, void *values
);
2419 /* Get/Read values at arbitrary locations.
2420 * The values will be of format _BaseFormat and type DataType.
2422 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2423 const GLint x
[], const GLint y
[], void *values
);
2425 /* Put/Write a row of values.
2426 * The values will be of format _BaseFormat and type DataType.
2428 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2429 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2431 /* Put/Write a row of RGB values. This is a special-case routine that's
2432 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2433 * a common case for glDrawPixels and some triangle routines.
2434 * The values will be of format GL_RGB and type DataType.
2436 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2437 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2440 /* Put/Write a row of identical values.
2441 * The values will be of format _BaseFormat and type DataType.
2443 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2444 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2446 /* Put/Write values at arbitrary locations.
2447 * The values will be of format _BaseFormat and type DataType.
2449 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2450 const GLint x
[], const GLint y
[], const void *values
,
2451 const GLubyte
*mask
);
2452 /* Put/Write identical values at arbitrary locations.
2453 * The values will be of format _BaseFormat and type DataType.
2455 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2456 GLuint count
, const GLint x
[], const GLint y
[],
2457 const void *value
, const GLubyte
*mask
);
2462 * A renderbuffer attachment points to either a texture object (and specifies
2463 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2465 struct gl_renderbuffer_attachment
2467 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2471 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2472 * application supplied renderbuffer object.
2474 struct gl_renderbuffer
*Renderbuffer
;
2477 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2478 * supplied texture object.
2480 struct gl_texture_object
*Texture
;
2481 GLuint TextureLevel
; /**< Attached mipmap level. */
2482 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2483 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2484 * and 2D array textures */
2489 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2490 * In C++ terms, think of this as a base class from which device drivers
2491 * will make derived classes.
2493 struct gl_framebuffer
2495 _glthread_Mutex Mutex
; /**< for thread safety */
2497 * If zero, this is a window system framebuffer. If non-zero, this
2498 * is a FBO framebuffer; note that for some devices (i.e. those with
2499 * a natural pixel coordinate system for FBOs that differs from the
2500 * OpenGL/Mesa coordinate system), this means that the viewport,
2501 * polygon face orientation, and polygon stipple will have to be inverted.
2506 GLboolean DeletePending
;
2509 * The framebuffer's visual. Immutable if this is a window system buffer.
2510 * Computed from attachments if user-made FBO.
2512 struct gl_config Visual
;
2514 GLboolean Initialized
;
2516 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2518 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2520 GLint _Xmin
, _Xmax
; /**< inclusive */
2521 GLint _Ymin
, _Ymax
; /**< exclusive */
2524 /** \name Derived Z buffer stuff */
2526 GLuint _DepthMax
; /**< Max depth buffer value */
2527 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2528 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2531 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2534 /** Integer color values */
2535 GLboolean _IntegerColor
;
2537 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2538 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2540 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2541 * attribute group and GL_PIXEL attribute group, respectively.
2543 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2544 GLenum ColorReadBuffer
;
2546 /** Computed from ColorDraw/ReadBuffer above */
2547 GLuint _NumColorDrawBuffers
;
2548 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2549 GLint _ColorReadBufferIndex
; /* -1 = None */
2550 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2551 struct gl_renderbuffer
*_ColorReadBuffer
;
2553 /** The Actual depth/stencil buffers to use. May be wrappers around the
2554 * depth/stencil buffers attached above. */
2555 struct gl_renderbuffer
*_DepthBuffer
;
2556 struct gl_renderbuffer
*_StencilBuffer
;
2558 /** Delete this framebuffer */
2559 void (*Delete
)(struct gl_framebuffer
*fb
);
2564 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2568 GLushort RangeMin
; /**< min value exponent */
2569 GLushort RangeMax
; /**< max value exponent */
2570 GLushort Precision
; /**< number of mantissa bits */
2575 * Limits for vertex and fragment programs/shaders.
2577 struct gl_program_constants
2579 /* logical limits */
2580 GLuint MaxInstructions
;
2581 GLuint MaxAluInstructions
;
2582 GLuint MaxTexInstructions
;
2583 GLuint MaxTexIndirections
;
2586 GLuint MaxAddressRegs
;
2587 GLuint MaxParameters
;
2588 GLuint MaxLocalParams
;
2589 GLuint MaxEnvParams
;
2590 /* native/hardware limits */
2591 GLuint MaxNativeInstructions
;
2592 GLuint MaxNativeAluInstructions
;
2593 GLuint MaxNativeTexInstructions
;
2594 GLuint MaxNativeTexIndirections
;
2595 GLuint MaxNativeAttribs
;
2596 GLuint MaxNativeTemps
;
2597 GLuint MaxNativeAddressRegs
;
2598 GLuint MaxNativeParameters
;
2600 GLuint MaxUniformComponents
;
2601 /* GL_ARB_geometry_shader4 */
2602 GLuint MaxGeometryTextureImageUnits
;
2603 GLuint MaxGeometryVaryingComponents
;
2604 GLuint MaxVertexVaryingComponents
;
2605 GLuint MaxGeometryUniformComponents
;
2606 GLuint MaxGeometryOutputVertices
;
2607 GLuint MaxGeometryTotalOutputComponents
;
2608 /* ES 2.0 and GL_ARB_ES2_compatibility */
2609 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2610 struct gl_precision LowInt
, MediumInt
, HighInt
;
2615 * Constants which may be overridden by device driver during context creation
2616 * but are never changed after that.
2620 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2621 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2622 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2623 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2624 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2625 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2626 GLuint MaxTextureCoordUnits
;
2627 GLuint MaxTextureImageUnits
;
2628 GLuint MaxVertexTextureImageUnits
;
2629 GLuint MaxCombinedTextureImageUnits
;
2630 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2631 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2632 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2634 GLuint MaxArrayLockSize
;
2638 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2639 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2640 GLfloat PointSizeGranularity
;
2641 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2642 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2643 GLfloat LineWidthGranularity
;
2645 GLuint MaxColorTableSize
;
2647 GLuint MaxClipPlanes
;
2649 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2650 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2652 GLuint MaxViewportWidth
, MaxViewportHeight
;
2654 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2655 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2656 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2657 GLuint MaxProgramMatrices
;
2658 GLuint MaxProgramMatrixStackDepth
;
2660 /** vertex array / buffer object bounds checking */
2661 GLboolean CheckArrayBounds
;
2663 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2665 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2666 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2667 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2669 GLuint MaxVarying
; /**< Number of float[4] varying parameters */
2671 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2673 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2674 GLbitfield SupportedBumpUnits
;
2677 * Maximum amount of time, measured in nanseconds, that the server can wait.
2679 GLuint64 MaxServerWaitTimeout
;
2681 /** GL_EXT_provoking_vertex */
2682 GLboolean QuadsFollowProvokingVertexConvention
;
2684 /** OpenGL version 3.0 */
2685 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2687 /** OpenGL version 3.2 */
2688 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2690 /** GL_EXT_transform_feedback */
2691 GLuint MaxTransformFeedbackSeparateAttribs
;
2692 GLuint MaxTransformFeedbackSeparateComponents
;
2693 GLuint MaxTransformFeedbackInterleavedComponents
;
2695 /** GL_EXT_gpu_shader4 */
2696 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2698 /* GL_EXT_framebuffer_sRGB */
2699 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2704 * Enable flag for each OpenGL extension. Different device drivers will
2705 * enable different extensions at runtime.
2707 struct gl_extensions
2709 GLboolean dummy
; /* don't remove this! */
2710 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2711 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2712 GLboolean ARB_ES2_compatibility
;
2713 GLboolean ARB_blend_func_extended
;
2714 GLboolean ARB_copy_buffer
;
2715 GLboolean ARB_depth_buffer_float
;
2716 GLboolean ARB_depth_clamp
;
2717 GLboolean ARB_depth_texture
;
2718 GLboolean ARB_draw_buffers
;
2719 GLboolean ARB_draw_buffers_blend
;
2720 GLboolean ARB_draw_elements_base_vertex
;
2721 GLboolean ARB_draw_instanced
;
2722 GLboolean ARB_fragment_coord_conventions
;
2723 GLboolean ARB_fragment_program
;
2724 GLboolean ARB_fragment_program_shadow
;
2725 GLboolean ARB_fragment_shader
;
2726 GLboolean ARB_framebuffer_object
;
2727 GLboolean ARB_explicit_attrib_location
;
2728 GLboolean ARB_geometry_shader4
;
2729 GLboolean ARB_half_float_pixel
;
2730 GLboolean ARB_half_float_vertex
;
2731 GLboolean ARB_instanced_arrays
;
2732 GLboolean ARB_map_buffer_range
;
2733 GLboolean ARB_multisample
;
2734 GLboolean ARB_multitexture
;
2735 GLboolean ARB_occlusion_query
;
2736 GLboolean ARB_occlusion_query2
;
2737 GLboolean ARB_point_sprite
;
2738 GLboolean ARB_sampler_objects
;
2739 GLboolean ARB_seamless_cube_map
;
2740 GLboolean ARB_shader_objects
;
2741 GLboolean ARB_shader_stencil_export
;
2742 GLboolean ARB_shading_language_100
;
2743 GLboolean ARB_shadow
;
2744 GLboolean ARB_shadow_ambient
;
2746 GLboolean ARB_texture_border_clamp
;
2747 GLboolean ARB_texture_buffer_object
;
2748 GLboolean ARB_texture_compression
;
2749 GLboolean ARB_texture_compression_rgtc
;
2750 GLboolean ARB_texture_cube_map
;
2751 GLboolean ARB_texture_env_combine
;
2752 GLboolean ARB_texture_env_crossbar
;
2753 GLboolean ARB_texture_env_dot3
;
2754 GLboolean ARB_texture_float
;
2755 GLboolean ARB_texture_mirrored_repeat
;
2756 GLboolean ARB_texture_multisample
;
2757 GLboolean ARB_texture_non_power_of_two
;
2758 GLboolean ARB_texture_rg
;
2759 GLboolean ARB_texture_rgb10_a2ui
;
2760 GLboolean ARB_timer_query
;
2761 GLboolean ARB_transform_feedback2
;
2762 GLboolean ARB_transpose_matrix
;
2763 GLboolean ARB_uniform_buffer_object
;
2764 GLboolean ARB_vertex_array_object
;
2765 GLboolean ARB_vertex_buffer_object
;
2766 GLboolean ARB_vertex_program
;
2767 GLboolean ARB_vertex_shader
;
2768 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2769 GLboolean ARB_window_pos
;
2772 GLboolean EXT_blend_color
;
2773 GLboolean EXT_blend_equation_separate
;
2774 GLboolean EXT_blend_func_separate
;
2775 GLboolean EXT_blend_logic_op
;
2776 GLboolean EXT_blend_minmax
;
2777 GLboolean EXT_blend_subtract
;
2778 GLboolean EXT_clip_volume_hint
;
2779 GLboolean EXT_compiled_vertex_array
;
2780 GLboolean EXT_copy_texture
;
2781 GLboolean EXT_depth_bounds_test
;
2782 GLboolean EXT_draw_buffers2
;
2783 GLboolean EXT_draw_range_elements
;
2784 GLboolean EXT_fog_coord
;
2785 GLboolean EXT_framebuffer_blit
;
2786 GLboolean EXT_framebuffer_multisample
;
2787 GLboolean EXT_framebuffer_object
;
2788 GLboolean EXT_framebuffer_sRGB
;
2789 GLboolean EXT_gpu_program_parameters
;
2790 GLboolean EXT_gpu_shader4
;
2791 GLboolean EXT_multi_draw_arrays
;
2792 GLboolean EXT_paletted_texture
;
2793 GLboolean EXT_packed_depth_stencil
;
2794 GLboolean EXT_packed_float
;
2795 GLboolean EXT_packed_pixels
;
2796 GLboolean EXT_pixel_buffer_object
;
2797 GLboolean EXT_point_parameters
;
2798 GLboolean EXT_polygon_offset
;
2799 GLboolean EXT_provoking_vertex
;
2800 GLboolean EXT_rescale_normal
;
2801 GLboolean EXT_shadow_funcs
;
2802 GLboolean EXT_secondary_color
;
2803 GLboolean EXT_separate_shader_objects
;
2804 GLboolean EXT_separate_specular_color
;
2805 GLboolean EXT_shared_texture_palette
;
2806 GLboolean EXT_stencil_wrap
;
2807 GLboolean EXT_stencil_two_side
;
2808 GLboolean EXT_subtexture
;
2809 GLboolean EXT_texture
;
2810 GLboolean EXT_texture_object
;
2811 GLboolean EXT_texture3D
;
2812 GLboolean EXT_texture_array
;
2813 GLboolean EXT_texture_compression_s3tc
;
2814 GLboolean EXT_texture_env_add
;
2815 GLboolean EXT_texture_env_combine
;
2816 GLboolean EXT_texture_env_dot3
;
2817 GLboolean EXT_texture_filter_anisotropic
;
2818 GLboolean EXT_texture_integer
;
2819 GLboolean EXT_texture_lod_bias
;
2820 GLboolean EXT_texture_mirror_clamp
;
2821 GLboolean EXT_texture_shared_exponent
;
2822 GLboolean EXT_texture_sRGB
;
2823 GLboolean EXT_texture_sRGB_decode
;
2824 GLboolean EXT_texture_swizzle
;
2825 GLboolean EXT_transform_feedback
;
2826 GLboolean EXT_timer_query
;
2827 GLboolean EXT_vertex_array
;
2828 GLboolean EXT_vertex_array_bgra
;
2829 GLboolean EXT_vertex_array_set
;
2830 GLboolean OES_standard_derivatives
;
2831 /* vendor extensions */
2832 GLboolean AMD_conservative_depth
;
2833 GLboolean APPLE_client_storage
;
2834 GLboolean APPLE_packed_pixels
;
2835 GLboolean APPLE_vertex_array_object
;
2836 GLboolean APPLE_object_purgeable
;
2837 GLboolean ATI_envmap_bumpmap
;
2838 GLboolean ATI_texture_mirror_once
;
2839 GLboolean ATI_texture_env_combine3
;
2840 GLboolean ATI_fragment_shader
;
2841 GLboolean ATI_separate_stencil
;
2842 GLboolean IBM_rasterpos_clip
;
2843 GLboolean IBM_multimode_draw_arrays
;
2844 GLboolean MESA_pack_invert
;
2845 GLboolean MESA_resize_buffers
;
2846 GLboolean MESA_ycbcr_texture
;
2847 GLboolean MESA_texture_array
;
2848 GLboolean MESA_texture_signed_rgba
;
2849 GLboolean NV_blend_square
;
2850 GLboolean NV_conditional_render
;
2851 GLboolean NV_fragment_program
;
2852 GLboolean NV_fragment_program_option
;
2853 GLboolean NV_light_max_exponent
;
2854 GLboolean NV_point_sprite
;
2855 GLboolean NV_primitive_restart
;
2856 GLboolean NV_texgen_reflection
;
2857 GLboolean NV_texture_env_combine4
;
2858 GLboolean NV_texture_rectangle
;
2859 GLboolean NV_vertex_program
;
2860 GLboolean NV_vertex_program1_1
;
2861 GLboolean OES_read_format
;
2862 GLboolean SGI_texture_color_table
;
2863 GLboolean SGIS_generate_mipmap
;
2864 GLboolean SGIS_texture_edge_clamp
;
2865 GLboolean SGIS_texture_lod
;
2866 GLboolean TDFX_texture_compression_FXT1
;
2868 GLboolean OES_EGL_image
;
2869 GLboolean OES_draw_texture
;
2870 GLboolean EXT_texture_format_BGRA8888
;
2871 GLboolean extension_sentinel
;
2872 /** The extension string */
2873 const GLubyte
*String
;
2874 /** Number of supported extensions */
2880 * A stack of matrices (projection, modelview, color, texture, etc).
2882 struct gl_matrix_stack
2884 GLmatrix
*Top
; /**< points into Stack */
2885 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2886 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2887 GLuint MaxDepth
; /**< size of Stack[] array */
2888 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2893 * \name Bits for image transfer operations
2894 * \sa __struct gl_contextRec::ImageTransferState.
2897 #define IMAGE_SCALE_BIAS_BIT 0x1
2898 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2899 #define IMAGE_MAP_COLOR_BIT 0x4
2900 #define IMAGE_CLAMP_BIT 0x800
2903 /** Pixel Transfer ops */
2904 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2905 IMAGE_SHIFT_OFFSET_BIT | \
2906 IMAGE_MAP_COLOR_BIT)
2909 * \name Bits to indicate what state has changed.
2912 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2913 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2914 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2915 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2916 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2917 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2918 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2919 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2920 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2921 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2922 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2923 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2924 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2925 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2926 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2927 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2928 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2929 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2930 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2931 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2932 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2933 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2934 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2935 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2936 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2937 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2938 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2939 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2940 #define _NEW_BUFFER_OBJECT (1 << 28)
2946 * \name Bits to track array state changes
2948 * Also used to summarize array enabled.
2951 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2952 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2953 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2954 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2955 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2956 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2957 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2958 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2959 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2960 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2961 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2962 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2963 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2964 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2965 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2966 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2967 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2968 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2969 #define _NEW_ARRAY_ALL 0xffffffff
2972 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2973 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2979 * \name A bunch of flags that we think might be useful to drivers.
2981 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
2984 #define DD_FLATSHADE 0x1
2985 #define DD_SEPARATE_SPECULAR 0x2
2986 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2987 #define DD_TRI_LIGHT_TWOSIDE 0x8
2988 #define DD_TRI_UNFILLED 0x10
2989 #define DD_TRI_SMOOTH 0x20
2990 #define DD_TRI_STIPPLE 0x40
2991 #define DD_TRI_OFFSET 0x80
2992 #define DD_LINE_SMOOTH 0x100
2993 #define DD_LINE_STIPPLE 0x200
2994 #define DD_POINT_SMOOTH 0x400
2995 #define DD_POINT_ATTEN 0x800
2996 #define DD_TRI_TWOSTENCIL 0x1000
3001 * \name Define the state changes under which each of these bits might change
3004 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3005 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3006 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3007 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3008 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3009 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3010 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3011 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3012 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3013 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3014 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3015 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3016 #define _DD_NEW_POINT_SIZE _NEW_POINT
3017 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3022 * Composite state flags
3025 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3031 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
3034 #define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL)
3040 /* This has to be included here. */
3045 * Display list flags.
3046 * Strictly this is a tnl-private concept, but it doesn't seem
3047 * worthwhile adding a tnl private structure just to hold this one bit
3050 #define DLIST_DANGLING_REFS 0x1
3053 /** Opaque declaration of display list payload data type */
3054 union gl_dlist_node
;
3058 * Provide a location where information about a display list can be
3059 * collected. Could be extended with driverPrivate structures,
3060 * etc. in the future.
3062 struct gl_display_list
3065 GLbitfield Flags
; /**< DLIST_x flags */
3066 /** The dlist commands are in a linked list of nodes */
3067 union gl_dlist_node
*Head
;
3072 * State used during display list compilation and execution.
3074 struct gl_dlist_state
3076 GLuint CallDepth
; /**< Current recursion calling depth */
3078 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3079 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3080 GLuint CurrentPos
; /**< Index into current block of nodes */
3082 GLvertexformat ListVtxfmt
;
3084 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3085 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3087 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3088 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3090 GLubyte ActiveIndex
;
3091 GLfloat CurrentIndex
;
3093 GLubyte ActiveEdgeFlag
;
3094 GLboolean CurrentEdgeFlag
;
3097 /* State known to have been set by the currently-compiling display
3098 * list. Used to eliminate some redundant state changes.
3106 * Enum for the OpenGL APIs we know about and may support.
3117 * Mesa rendering context.
3119 * This is the central context data structure for Mesa. Almost all
3120 * OpenGL state is contained in this structure.
3121 * Think of this as a base class from which device drivers will derive
3124 * The struct gl_context typedef names this structure.
3128 /** State possibly shared with other contexts in the address space */
3129 struct gl_shared_state
*Shared
;
3131 /** \name API function pointer tables */
3134 struct _glapi_table
*Save
; /**< Display list save functions */
3135 struct _glapi_table
*Exec
; /**< Execute functions */
3136 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3139 struct gl_config Visual
;
3140 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3141 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3142 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3143 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3146 * Device driver function pointer table
3148 struct dd_function_table Driver
;
3150 void *DriverCtx
; /**< Points to device driver context/state */
3152 /** Core/Driver constants */
3153 struct gl_constants Const
;
3155 /** \name The various 4x4 matrix stacks */
3157 struct gl_matrix_stack ModelviewMatrixStack
;
3158 struct gl_matrix_stack ProjectionMatrixStack
;
3159 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3160 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3161 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3164 /** Combined modelview and projection matrix */
3165 GLmatrix _ModelProjectMatrix
;
3167 /** \name Display lists */
3168 struct gl_dlist_state ListState
;
3170 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3171 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3173 /** Extension information */
3174 struct gl_extensions Extensions
;
3177 GLuint VersionMajor
, VersionMinor
;
3178 char *VersionString
;
3180 /** \name State attribute stack (for glPush/PopAttrib) */
3182 GLuint AttribStackDepth
;
3183 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3186 /** \name Renderer attribute groups
3188 * We define a struct for each attribute group to make pushing and popping
3189 * attributes easy. Also it's a good organization.
3192 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3193 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3194 struct gl_current_attrib Current
; /**< Current attributes */
3195 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3196 struct gl_eval_attrib Eval
; /**< Eval attributes */
3197 struct gl_fog_attrib Fog
; /**< Fog attributes */
3198 struct gl_hint_attrib Hint
; /**< Hint attributes */
3199 struct gl_light_attrib Light
; /**< Light attributes */
3200 struct gl_line_attrib Line
; /**< Line attributes */
3201 struct gl_list_attrib List
; /**< List attributes */
3202 struct gl_multisample_attrib Multisample
;
3203 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3204 struct gl_point_attrib Point
; /**< Point attributes */
3205 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3206 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3207 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3208 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3209 struct gl_texture_attrib Texture
; /**< Texture attributes */
3210 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3211 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3214 /** \name Client attribute stack */
3216 GLuint ClientAttribStackDepth
;
3217 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3220 /** \name Client attribute groups */
3222 struct gl_array_attrib Array
; /**< Vertex arrays */
3223 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3224 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3225 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3228 /** \name Other assorted state (not pushed/popped on attribute stack) */
3230 struct gl_pixelmaps PixelMaps
;
3232 struct gl_evaluators EvalMap
; /**< All evaluators */
3233 struct gl_feedback Feedback
; /**< Feedback */
3234 struct gl_selection Select
; /**< Selection */
3236 struct gl_program_state Program
; /**< general program state */
3237 struct gl_vertex_program_state VertexProgram
;
3238 struct gl_fragment_program_state FragmentProgram
;
3239 struct gl_geometry_program_state GeometryProgram
;
3240 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3242 struct gl_shader_state Shader
; /**< GLSL shader object state */
3243 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3245 struct gl_query_state Query
; /**< occlusion, timer queries */
3247 struct gl_transform_feedback TransformFeedback
;
3249 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3250 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3253 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3255 /* GL_EXT_framebuffer_object */
3256 struct gl_renderbuffer
*CurrentRenderbuffer
;
3258 GLenum ErrorValue
; /**< Last error code */
3261 * Recognize and silence repeated error debug messages in buggy apps.
3263 const char *ErrorDebugFmtString
;
3264 GLuint ErrorDebugCount
;
3266 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3267 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3269 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3271 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3273 /** \name Derived state */
3275 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3276 * state validation so they need to always be current.
3278 GLbitfield _TriangleCaps
;
3279 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3280 GLfloat _EyeZDir
[3];
3281 GLfloat _ModelViewInvScale
;
3282 GLboolean _NeedEyeCoords
;
3283 GLboolean _ForceEyeCoords
;
3285 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3287 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3288 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3291 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3293 /** \name For debugging/development only */
3295 GLboolean FirstTimeCurrent
;
3298 /** software compression/decompression supported or not */
3299 GLboolean Mesa_DXTn
;
3301 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3304 * Use dp4 (rather than mul/mad) instructions for position
3307 GLboolean mvp_with_dp4
;
3310 * \name Hooks for module contexts.
3312 * These will eventually live in the driver or elsewhere.
3315 void *swrast_context
;
3316 void *swsetup_context
;
3317 void *swtnl_context
;
3319 struct st_context
*st
;
3326 extern int MESA_VERBOSE
;
3327 extern int MESA_DEBUG_FLAGS
;
3328 # define MESA_FUNCTION __FUNCTION__
3330 # define MESA_VERBOSE 0
3331 # define MESA_DEBUG_FLAGS 0
3332 # define MESA_FUNCTION "a function"
3339 /** The MESA_VERBOSE var is a bitmask of these flags */
3342 VERBOSE_VARRAY
= 0x0001,
3343 VERBOSE_TEXTURE
= 0x0002,
3344 VERBOSE_MATERIAL
= 0x0004,
3345 VERBOSE_PIPELINE
= 0x0008,
3346 VERBOSE_DRIVER
= 0x0010,
3347 VERBOSE_STATE
= 0x0020,
3348 VERBOSE_API
= 0x0040,
3349 VERBOSE_DISPLAY_LIST
= 0x0100,
3350 VERBOSE_LIGHTING
= 0x0200,
3351 VERBOSE_PRIMS
= 0x0400,
3352 VERBOSE_VERTS
= 0x0800,
3353 VERBOSE_DISASSEM
= 0x1000,
3354 VERBOSE_DRAW
= 0x2000,
3355 VERBOSE_SWAPBUFFERS
= 0x4000
3359 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3362 DEBUG_ALWAYS_FLUSH
= 0x1
3367 #endif /* MTYPES_H */