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/compiler.h"
40 #include "main/mfeatures.h"
41 #include "glapi/glapi.h"
42 #include "math/m_matrix.h" /* GLmatrix */
46 * Color channel data type.
49 typedef GLubyte GLchan
;
51 #define CHAN_MAXF 255.0F
52 #define CHAN_TYPE GL_UNSIGNED_BYTE
54 typedef GLushort GLchan
;
55 #define CHAN_MAX 65535
56 #define CHAN_MAXF 65535.0F
57 #define CHAN_TYPE GL_UNSIGNED_SHORT
59 typedef GLfloat GLchan
;
61 #define CHAN_MAXF 1.0F
62 #define CHAN_TYPE GL_FLOAT
64 #error "illegal number of color channel bits"
69 * Stencil buffer data type.
72 typedef GLubyte GLstencil
;
73 #elif STENCIL_BITS==16
74 typedef GLushort GLstencil
;
76 # error "illegal number of stencil bits"
81 * \name Some forward type declarations
84 struct _mesa_HashTable
;
85 struct gl_attrib_node
;
87 struct gl_pixelstore_attrib
;
88 struct gl_program_cache
;
89 struct gl_texture_format
;
90 struct gl_texture_image
;
91 struct gl_texture_object
;
93 typedef struct __GLcontextRec GLcontext
;
94 typedef struct __GLcontextModesRec GLvisual
;
95 typedef struct gl_framebuffer GLframebuffer
;
101 * Indexes for vertex program attributes.
102 * GL_NV_vertex_program aliases generic attributes over the conventional
103 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
104 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
105 * generic attributes are distinct/separate).
110 VERT_ATTRIB_WEIGHT
= 1,
111 VERT_ATTRIB_NORMAL
= 2,
112 VERT_ATTRIB_COLOR0
= 3,
113 VERT_ATTRIB_COLOR1
= 4,
115 VERT_ATTRIB_COLOR_INDEX
= 6,
116 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
117 VERT_ATTRIB_EDGEFLAG
= 7,
118 VERT_ATTRIB_TEX0
= 8,
119 VERT_ATTRIB_TEX1
= 9,
120 VERT_ATTRIB_TEX2
= 10,
121 VERT_ATTRIB_TEX3
= 11,
122 VERT_ATTRIB_TEX4
= 12,
123 VERT_ATTRIB_TEX5
= 13,
124 VERT_ATTRIB_TEX6
= 14,
125 VERT_ATTRIB_TEX7
= 15,
126 VERT_ATTRIB_GENERIC0
= 16,
127 VERT_ATTRIB_GENERIC1
= 17,
128 VERT_ATTRIB_GENERIC2
= 18,
129 VERT_ATTRIB_GENERIC3
= 19,
130 VERT_ATTRIB_GENERIC4
= 20,
131 VERT_ATTRIB_GENERIC5
= 21,
132 VERT_ATTRIB_GENERIC6
= 22,
133 VERT_ATTRIB_GENERIC7
= 23,
134 VERT_ATTRIB_GENERIC8
= 24,
135 VERT_ATTRIB_GENERIC9
= 25,
136 VERT_ATTRIB_GENERIC10
= 26,
137 VERT_ATTRIB_GENERIC11
= 27,
138 VERT_ATTRIB_GENERIC12
= 28,
139 VERT_ATTRIB_GENERIC13
= 29,
140 VERT_ATTRIB_GENERIC14
= 30,
141 VERT_ATTRIB_GENERIC15
= 31,
146 * Bitflags for vertex attributes.
147 * These are used in bitfields in many places.
150 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
151 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
152 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
153 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
154 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
155 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
156 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
157 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
158 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
159 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
160 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
161 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
162 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
163 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
164 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
165 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
166 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
167 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
168 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
169 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
170 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
171 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
172 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
173 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
174 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
175 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
176 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
177 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
178 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
179 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
180 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
181 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
183 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
184 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
189 * Indexes for vertex program result attributes
193 VERT_RESULT_HPOS
= 0,
194 VERT_RESULT_COL0
= 1,
195 VERT_RESULT_COL1
= 2,
196 VERT_RESULT_FOGC
= 3,
197 VERT_RESULT_TEX0
= 4,
198 VERT_RESULT_TEX1
= 5,
199 VERT_RESULT_TEX2
= 6,
200 VERT_RESULT_TEX3
= 7,
201 VERT_RESULT_TEX4
= 8,
202 VERT_RESULT_TEX5
= 9,
203 VERT_RESULT_TEX6
= 10,
204 VERT_RESULT_TEX7
= 11,
205 VERT_RESULT_PSIZ
= 12,
206 VERT_RESULT_BFC0
= 13,
207 VERT_RESULT_BFC1
= 14,
208 VERT_RESULT_EDGE
= 15,
209 VERT_RESULT_VAR0
= 16 /**< shader varying */,
210 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
215 * Indexes for fragment program input attributes.
219 FRAG_ATTRIB_WPOS
= 0,
220 FRAG_ATTRIB_COL0
= 1,
221 FRAG_ATTRIB_COL1
= 2,
222 FRAG_ATTRIB_FOGC
= 3,
223 FRAG_ATTRIB_TEX0
= 4,
224 FRAG_ATTRIB_TEX1
= 5,
225 FRAG_ATTRIB_TEX2
= 6,
226 FRAG_ATTRIB_TEX3
= 7,
227 FRAG_ATTRIB_TEX4
= 8,
228 FRAG_ATTRIB_TEX5
= 9,
229 FRAG_ATTRIB_TEX6
= 10,
230 FRAG_ATTRIB_TEX7
= 11,
231 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
232 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
233 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
234 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
238 * Bitflags for fragment program input attributes.
241 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
242 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
243 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
244 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
245 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
246 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
247 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
248 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
249 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
250 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
251 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
252 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
253 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
254 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
255 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
257 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
258 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
260 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
272 * Fragment program results
276 FRAG_RESULT_DEPTH
= 0,
277 FRAG_RESULT_COLOR
= 1,
278 FRAG_RESULT_DATA0
= 2,
279 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
284 * Indexes for all renderbuffers
288 /* the four standard color buffers */
296 /* optional aux buffer */
298 /* generic renderbuffers */
311 * Bit flags for all renderbuffers
313 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
314 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
315 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
316 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
317 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
318 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
319 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
320 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
321 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
322 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
323 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
324 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
325 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
326 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
327 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
328 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
329 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
330 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
331 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
334 * Mask of all the color buffer bits (but not accum).
336 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
337 BUFFER_BIT_BACK_LEFT | \
338 BUFFER_BIT_FRONT_RIGHT | \
339 BUFFER_BIT_BACK_RIGHT | \
341 BUFFER_BIT_COLOR0 | \
342 BUFFER_BIT_COLOR1 | \
343 BUFFER_BIT_COLOR2 | \
344 BUFFER_BIT_COLOR3 | \
345 BUFFER_BIT_COLOR4 | \
346 BUFFER_BIT_COLOR5 | \
347 BUFFER_BIT_COLOR6 | \
351 /** The pixel transfer path has three color tables: */
354 COLORTABLE_PRECONVOLUTION
,
355 COLORTABLE_POSTCONVOLUTION
,
356 COLORTABLE_POSTCOLORMATRIX
,
358 } gl_colortable_index
;
362 * Data structure for color tables
364 struct gl_color_table
366 GLenum InternalFormat
; /**< The user-specified format */
367 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
368 GLuint Size
; /**< number of entries in table */
369 GLfloat
*TableF
; /**< Color table, floating point values */
370 GLubyte
*TableUB
; /**< Color table, ubyte values */
375 GLubyte LuminanceSize
;
376 GLubyte IntensitySize
;
381 * \name Bit flags used for updating material values.
384 #define MAT_ATTRIB_FRONT_AMBIENT 0
385 #define MAT_ATTRIB_BACK_AMBIENT 1
386 #define MAT_ATTRIB_FRONT_DIFFUSE 2
387 #define MAT_ATTRIB_BACK_DIFFUSE 3
388 #define MAT_ATTRIB_FRONT_SPECULAR 4
389 #define MAT_ATTRIB_BACK_SPECULAR 5
390 #define MAT_ATTRIB_FRONT_EMISSION 6
391 #define MAT_ATTRIB_BACK_EMISSION 7
392 #define MAT_ATTRIB_FRONT_SHININESS 8
393 #define MAT_ATTRIB_BACK_SHININESS 9
394 #define MAT_ATTRIB_FRONT_INDEXES 10
395 #define MAT_ATTRIB_BACK_INDEXES 11
396 #define MAT_ATTRIB_MAX 12
398 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
399 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
400 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
401 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
402 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
403 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
405 #define MAT_INDEX_AMBIENT 0
406 #define MAT_INDEX_DIFFUSE 1
407 #define MAT_INDEX_SPECULAR 2
409 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
410 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
411 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
412 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
413 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
414 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
415 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
416 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
417 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
418 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
419 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
420 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
423 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
424 MAT_BIT_FRONT_AMBIENT | \
425 MAT_BIT_FRONT_DIFFUSE | \
426 MAT_BIT_FRONT_SPECULAR | \
427 MAT_BIT_FRONT_SHININESS | \
428 MAT_BIT_FRONT_INDEXES)
430 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
431 MAT_BIT_BACK_AMBIENT | \
432 MAT_BIT_BACK_DIFFUSE | \
433 MAT_BIT_BACK_SPECULAR | \
434 MAT_BIT_BACK_SHININESS | \
435 MAT_BIT_BACK_INDEXES)
437 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
441 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
442 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
445 * Material shininess lookup table.
449 struct gl_shine_tab
*next
, *prev
;
450 GLfloat tab
[SHINE_TABLE_SIZE
+1];
457 * Light source state.
461 struct gl_light
*next
; /**< double linked list with sentinel */
462 struct gl_light
*prev
;
464 GLfloat Ambient
[4]; /**< ambient color */
465 GLfloat Diffuse
[4]; /**< diffuse color */
466 GLfloat Specular
[4]; /**< specular color */
467 GLfloat EyePosition
[4]; /**< position in eye coordinates */
468 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
469 GLfloat SpotExponent
;
470 GLfloat SpotCutoff
; /**< in degrees */
471 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
472 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
473 GLfloat ConstantAttenuation
;
474 GLfloat LinearAttenuation
;
475 GLfloat QuadraticAttenuation
;
476 GLboolean Enabled
; /**< On/off flag */
479 * \name Derived fields
482 GLbitfield _Flags
; /**< State */
484 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
485 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
486 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
487 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
488 GLfloat _VP_inf_spot_attenuation
;
490 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
491 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
492 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
493 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
494 GLfloat _dli
; /**< CI diffuse light intensity */
495 GLfloat _sli
; /**< CI specular light intensity */
505 GLfloat Ambient
[4]; /**< ambient color */
506 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
507 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
508 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
509 * or GL_SEPARATE_SPECULAR_COLOR */
518 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
523 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
525 struct gl_accum_attrib
527 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
532 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
534 struct gl_colorbuffer_attrib
536 GLuint ClearIndex
; /**< Index to use for glClear */
537 GLclampf ClearColor
[4]; /**< Color to use for glClear */
539 GLuint IndexMask
; /**< Color index write mask */
540 GLubyte ColorMask
[4]; /**< Each flag is 0xff or 0x0 */
542 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
545 * \name alpha testing
548 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
549 GLenum AlphaFunc
; /**< Alpha test function */
550 GLclampf AlphaRef
; /**< Alpha reference value */
557 GLboolean BlendEnabled
; /**< Blending enabled flag */
558 GLenum BlendSrcRGB
; /**< Blending source operator */
559 GLenum BlendDstRGB
; /**< Blending destination operator */
560 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
561 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
562 GLenum BlendEquationRGB
; /**< Blending equation */
563 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
564 GLfloat BlendColor
[4]; /**< Blending color */
571 GLenum LogicOp
; /**< Logic operator */
572 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
573 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
574 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
577 GLboolean DitherFlag
; /**< Dither enable flag */
579 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
580 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
585 * Current attribute group (GL_CURRENT_BIT).
587 struct gl_current_attrib
590 * \name Current vertex attributes.
591 * \note Values are valid only after FLUSH_VERTICES has been called.
592 * \note Index and Edgeflag current values are stored as floats in the
593 * SIX and SEVEN attribute slots.
595 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
598 * \name Current raster position attributes (always valid).
599 * \note This set of attributes is very similar to the SWvertex struct.
602 GLfloat RasterPos
[4];
603 GLfloat RasterDistance
;
604 GLfloat RasterColor
[4];
605 GLfloat RasterSecondaryColor
[4];
607 GLfloat RasterTexCoords
[MAX_TEXTURE_UNITS
][4];
608 GLboolean RasterPosValid
;
614 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
616 struct gl_depthbuffer_attrib
618 GLenum Func
; /**< Function for depth buffer compare */
619 GLclampd Clear
; /**< Value to clear depth buffer to */
620 GLboolean Test
; /**< Depth buffering enabled flag */
621 GLboolean Mask
; /**< Depth buffer writable? */
622 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
623 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
628 * Evaluator attribute group (GL_EVAL_BIT).
630 struct gl_eval_attrib
636 GLboolean Map1Color4
;
638 GLboolean Map1Normal
;
639 GLboolean Map1TextureCoord1
;
640 GLboolean Map1TextureCoord2
;
641 GLboolean Map1TextureCoord3
;
642 GLboolean Map1TextureCoord4
;
643 GLboolean Map1Vertex3
;
644 GLboolean Map1Vertex4
;
645 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
646 GLboolean Map2Color4
;
648 GLboolean Map2Normal
;
649 GLboolean Map2TextureCoord1
;
650 GLboolean Map2TextureCoord2
;
651 GLboolean Map2TextureCoord3
;
652 GLboolean Map2TextureCoord4
;
653 GLboolean Map2Vertex3
;
654 GLboolean Map2Vertex4
;
655 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
656 GLboolean AutoNormal
;
660 * \name Map Grid endpoints and divisions and calculated du values
664 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
665 GLint MapGrid2un
, MapGrid2vn
;
666 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
667 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
673 * Fog attribute group (GL_FOG_BIT).
677 GLboolean Enabled
; /**< Fog enabled flag */
678 GLfloat Color
[4]; /**< Fog color */
679 GLfloat Density
; /**< Density >= 0.0 */
680 GLfloat Start
; /**< Start distance in eye coords */
681 GLfloat End
; /**< End distance in eye coords */
682 GLfloat Index
; /**< Fog index */
683 GLenum Mode
; /**< Fog mode */
684 GLboolean ColorSumEnabled
;
685 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
686 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
691 * Hint attribute group (GL_HINT_BIT).
693 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
695 struct gl_hint_attrib
697 GLenum PerspectiveCorrection
;
700 GLenum PolygonSmooth
;
702 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
703 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
704 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
705 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
710 * Histogram attributes.
712 struct gl_histogram_attrib
714 GLuint Width
; /**< number of table entries */
715 GLint Format
; /**< GL_ALPHA, GL_RGB, etc */
716 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /**< the histogram */
717 GLboolean Sink
; /**< terminate image transfer? */
718 GLubyte RedSize
; /**< Bits per counter */
722 GLubyte LuminanceSize
;
727 * Color Min/max state.
729 struct gl_minmax_attrib
733 GLfloat Min
[4], Max
[4]; /**< RGBA */
738 * Image convolution state.
740 struct gl_convolution_attrib
743 GLenum InternalFormat
;
746 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
754 #define LIGHT_SPOT 0x1
755 #define LIGHT_LOCAL_VIEWER 0x2
756 #define LIGHT_POSITIONAL 0x4
757 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
762 * Lighting attribute group (GL_LIGHT_BIT).
764 struct gl_light_attrib
766 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
767 struct gl_lightmodel Model
; /**< Lighting model */
770 * Must flush FLUSH_VERTICES before referencing:
773 struct gl_material Material
; /**< Includes front & back values */
776 GLboolean Enabled
; /**< Lighting enabled flag */
777 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
778 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
779 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
780 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
781 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
782 GLboolean ColorMaterialEnabled
;
783 GLenum ClampVertexColor
;
785 struct gl_light EnabledList
; /**< List sentinel */
788 * Derived state for optimizations:
791 GLboolean _NeedEyeCoords
;
792 GLboolean _NeedVertices
; /**< Use fast shader? */
793 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
794 GLfloat _BaseColor
[2][3];
800 * Line attribute group (GL_LINE_BIT).
802 struct gl_line_attrib
804 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
805 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
806 GLushort StipplePattern
; /**< Stipple pattern */
807 GLint StippleFactor
; /**< Stipple repeat factor */
808 GLfloat Width
; /**< Line width */
813 * Display list attribute group (GL_LIST_BIT).
815 struct gl_list_attrib
822 * Used by device drivers to hook new commands into display lists.
824 struct gl_list_instruction
827 void (*Execute
)( GLcontext
*ctx
, void *data
);
828 void (*Destroy
)( GLcontext
*ctx
, void *data
);
829 void (*Print
)( GLcontext
*ctx
, void *data
);
832 #define MAX_DLIST_EXT_OPCODES 16
835 * Used by device drivers to hook new commands into display lists.
837 struct gl_list_extensions
839 struct gl_list_instruction Opcode
[MAX_DLIST_EXT_OPCODES
];
845 * Multisample attribute group (GL_MULTISAMPLE_BIT).
847 struct gl_multisample_attrib
850 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
851 GLboolean SampleAlphaToCoverage
;
852 GLboolean SampleAlphaToOne
;
853 GLboolean SampleCoverage
;
854 GLfloat SampleCoverageValue
;
855 GLboolean SampleCoverageInvert
;
860 * A pixelmap (see glPixelMap)
865 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
866 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
871 * Collection of all pixelmaps
875 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
876 struct gl_pixelmap GtoG
;
877 struct gl_pixelmap BtoB
;
878 struct gl_pixelmap AtoA
;
879 struct gl_pixelmap ItoR
;
880 struct gl_pixelmap ItoG
;
881 struct gl_pixelmap ItoB
;
882 struct gl_pixelmap ItoA
;
883 struct gl_pixelmap ItoI
;
884 struct gl_pixelmap StoS
;
889 * Pixel attribute group (GL_PIXEL_MODE_BIT).
891 struct gl_pixel_attrib
893 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
895 /*--- Begin Pixel Transfer State ---*/
896 /* Fields are in the order in which they're applied... */
898 /** Scale & Bias (index shift, offset) */
900 GLfloat RedBias
, RedScale
;
901 GLfloat GreenBias
, GreenScale
;
902 GLfloat BlueBias
, BlueScale
;
903 GLfloat AlphaBias
, AlphaScale
;
904 GLfloat DepthBias
, DepthScale
;
905 GLint IndexShift
, IndexOffset
;
909 /* Note: actual pixel maps are not part of this attrib group */
910 GLboolean MapColorFlag
;
911 GLboolean MapStencilFlag
;
913 /* There are multiple color table stages: */
914 GLboolean ColorTableEnabled
[COLORTABLE_MAX
];
915 GLfloat ColorTableScale
[COLORTABLE_MAX
][4]; /**< RGBA */
916 GLfloat ColorTableBias
[COLORTABLE_MAX
][4]; /**< RGBA */
918 /* Convolution (GL_EXT_convolution) */
919 GLboolean Convolution1DEnabled
;
920 GLboolean Convolution2DEnabled
;
921 GLboolean Separable2DEnabled
;
922 GLfloat ConvolutionBorderColor
[3][4]; /**< RGBA */
923 GLenum ConvolutionBorderMode
[3];
924 GLfloat ConvolutionFilterScale
[3][4]; /**< RGBA */
925 GLfloat ConvolutionFilterBias
[3][4]; /**< RGBA */
926 GLfloat PostConvolutionScale
[4]; /**< RGBA */
927 GLfloat PostConvolutionBias
[4]; /**< RGBA */
929 /* Color matrix (GL_SGI_color_matrix) */
930 /* Note: the color matrix is not part of this attrib group */
931 GLfloat PostColorMatrixScale
[4]; /**< RGBA */
932 GLfloat PostColorMatrixBias
[4]; /**< RGBA */
934 /* Histogram & minmax (GL_EXT_histogram) */
935 /* Note: histogram and minmax data are not part of this attrib group */
936 GLboolean HistogramEnabled
;
937 GLboolean MinMaxEnabled
;
939 /*--- End Pixel Transfer State ---*/
942 GLfloat ZoomX
, ZoomY
;
944 /** GL_SGI_texture_color_table */
945 GLfloat TextureColorTableScale
[4]; /**< RGBA */
946 GLfloat TextureColorTableBias
[4]; /**< RGBA */
951 * Point attribute group (GL_POINT_BIT).
953 struct gl_point_attrib
955 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
956 GLfloat Size
; /**< User-specified point size */
957 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
958 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
959 GLfloat Threshold
; /**< GL_EXT_point_parameters */
960 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
961 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
962 GLboolean CoordReplace
[MAX_TEXTURE_UNITS
]; /**< GL_ARB_point_sprite */
963 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
964 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
969 * Polygon attribute group (GL_POLYGON_BIT).
971 struct gl_polygon_attrib
973 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
974 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
975 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
976 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
977 GLboolean CullFlag
; /**< Culling on/off flag */
978 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
979 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
980 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
981 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
982 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
983 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
984 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
985 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
990 * Scissor attributes (GL_SCISSOR_BIT).
992 struct gl_scissor_attrib
994 GLboolean Enabled
; /**< Scissor test enabled? */
995 GLint X
, Y
; /**< Lower left corner of box */
996 GLsizei Width
, Height
; /**< Size of box */
1001 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1003 * Three sets of stencil data are tracked so that OpenGL 2.0,
1004 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1005 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1006 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1007 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1008 * GL_EXT_stencil_two_side GL_BACK state.
1010 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1011 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1013 * The derived value \c _TestTwoSide is set when the front-face and back-face
1014 * stencil state are different.
1016 struct gl_stencil_attrib
1018 GLboolean Enabled
; /**< Enabled flag */
1019 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1020 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1021 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1022 GLboolean _TestTwoSide
;
1023 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1024 GLenum Function
[3]; /**< Stencil function */
1025 GLenum FailFunc
[3]; /**< Fail function */
1026 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1027 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1028 GLint Ref
[3]; /**< Reference value */
1029 GLuint ValueMask
[3]; /**< Value mask */
1030 GLuint WriteMask
[3]; /**< Write mask */
1031 GLuint Clear
; /**< Clear value */
1036 * An index for each type of texture object. These correspond to the GL
1037 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1038 * Note: the order is from highest priority to lowest priority.
1042 TEXTURE_2D_ARRAY_INDEX
,
1043 TEXTURE_1D_ARRAY_INDEX
,
1054 * Bit flags for each type of texture object
1055 * Used for Texture.Unit[]._ReallyEnabled flags.
1058 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1059 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1060 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1061 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1062 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1063 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1064 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1069 * TexGenEnabled flags.
1080 * Bit flag versions of the corresponding GL_ constants.
1083 #define TEXGEN_SPHERE_MAP 0x1
1084 #define TEXGEN_OBJ_LINEAR 0x2
1085 #define TEXGEN_EYE_LINEAR 0x4
1086 #define TEXGEN_REFLECTION_MAP_NV 0x8
1087 #define TEXGEN_NORMAL_MAP_NV 0x10
1089 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1090 TEXGEN_REFLECTION_MAP_NV | \
1091 TEXGEN_NORMAL_MAP_NV)
1092 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1093 TEXGEN_REFLECTION_MAP_NV | \
1094 TEXGEN_NORMAL_MAP_NV | \
1100 /** Tex-gen enabled for texture unit? */
1101 #define ENABLE_TEXGEN(unit) (1 << (unit))
1103 /** Non-identity texture matrix for texture unit? */
1104 #define ENABLE_TEXMAT(unit) (1 << (unit))
1108 * Texel fetch function prototype. We use texel fetch functions to
1109 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1110 * texture images. These functions help to isolate us from the gritty
1111 * details of all the various texture image encodings.
1113 * \param texImage texture image.
1114 * \param col texel column.
1115 * \param row texel row.
1116 * \param img texel image level/layer.
1117 * \param texelOut output texel (up to 4 GLchans)
1119 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1120 GLint col
, GLint row
, GLint img
,
1124 * As above, but returns floats.
1125 * Used for depth component images and for upcoming signed/float
1128 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1129 GLint col
, GLint row
, GLint img
,
1130 GLfloat
*texelOut
);
1133 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1134 GLint col
, GLint row
, GLint img
,
1139 * This macro defines the (many) parameters to the texstore functions.
1140 * \param dims either 1 or 2 or 3
1141 * \param baseInternalFormat user-specified base internal format
1142 * \param dstFormat destination Mesa texture format
1143 * \param dstAddr destination image address
1144 * \param dstX/Y/Zoffset destination x/y/z offset (ala TexSubImage), in texels
1145 * \param dstRowStride destination image row stride, in bytes
1146 * \param dstImageOffsets offset of each 2D slice within 3D texture, in texels
1147 * \param srcWidth/Height/Depth source image size, in pixels
1148 * \param srcFormat incoming image format
1149 * \param srcType incoming image data type
1150 * \param srcAddr source image address
1151 * \param srcPacking source image packing parameters
1153 #define TEXSTORE_PARAMS \
1154 GLcontext *ctx, GLuint dims, \
1155 GLenum baseInternalFormat, \
1156 const struct gl_texture_format *dstFormat, \
1158 GLint dstXoffset, GLint dstYoffset, GLint dstZoffset, \
1159 GLint dstRowStride, const GLuint *dstImageOffsets, \
1160 GLint srcWidth, GLint srcHeight, GLint srcDepth, \
1161 GLenum srcFormat, GLenum srcType, \
1162 const GLvoid *srcAddr, \
1163 const struct gl_pixelstore_attrib *srcPacking
1168 * Texture image storage function.
1170 typedef GLboolean (*StoreTexImageFunc
)(TEXSTORE_PARAMS
);
1174 * Texture format record
1176 struct gl_texture_format
1178 GLint MesaFormat
; /**< One of the MESA_FORMAT_* values */
1180 GLenum BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1181 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1182 * GL_INTENSITY, GL_COLOR_INDEX or
1183 * GL_DEPTH_COMPONENT.
1185 GLenum DataType
; /**< GL_FLOAT or GL_UNSIGNED_NORMALIZED_ARB */
1188 * Bits per texel component. These are just rough approximations
1189 * for compressed texture formats.
1196 GLubyte LuminanceBits
;
1197 GLubyte IntensityBits
;
1200 GLubyte StencilBits
; /**< GL_EXT_packed_depth_stencil */
1203 GLuint TexelBytes
; /**< Bytes per texel, 0 if compressed format */
1205 StoreTexImageFunc StoreImage
;
1208 * \name Texel fetch function pointers
1211 FetchTexelFuncC FetchTexel1D
;
1212 FetchTexelFuncC FetchTexel2D
;
1213 FetchTexelFuncC FetchTexel3D
;
1214 FetchTexelFuncF FetchTexel1Df
;
1215 FetchTexelFuncF FetchTexel2Df
;
1216 FetchTexelFuncF FetchTexel3Df
;
1219 StoreTexelFunc StoreTexel
;
1224 * Texture image state. Describes the dimensions of a texture image,
1225 * the texel format and pointers to Texel Fetch functions.
1227 struct gl_texture_image
1229 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1230 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1231 * GL_INTENSITY, GL_COLOR_INDEX,
1232 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1233 * only. Used for choosing TexEnv arithmetic.
1235 GLint InternalFormat
; /**< Internal format as given by the user */
1236 GLuint Border
; /**< 0 or 1 */
1237 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1238 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1239 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1240 GLuint Width2
; /**< = Width - 2*Border */
1241 GLuint Height2
; /**< = Height - 2*Border */
1242 GLuint Depth2
; /**< = Depth - 2*Border */
1243 GLuint WidthLog2
; /**< = log2(Width2) */
1244 GLuint HeightLog2
; /**< = log2(Height2) */
1245 GLuint DepthLog2
; /**< = log2(Depth2) */
1246 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1247 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1248 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1249 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1250 GLboolean IsClientData
; /**< Data owned by client? */
1251 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1253 const struct gl_texture_format
*TexFormat
;
1255 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1257 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1258 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1260 GLboolean IsCompressed
; /**< GL_ARB_texture_compression */
1261 GLuint CompressedSize
; /**< GL_ARB_texture_compression */
1263 GLuint RowStride
; /**< Padded width in units of texels */
1264 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1265 each 2D slice in 'Data', in texels */
1266 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1269 * \name For device driver:
1272 void *DriverData
; /**< Arbitrary device driver data */
1278 * Indexes for cube map faces.
1293 * Texture object state. Contains the array of mipmap images, border color,
1294 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1297 struct gl_texture_object
1299 _glthread_Mutex Mutex
; /**< for thread safety */
1300 GLint RefCount
; /**< reference count */
1301 GLuint Name
; /**< the user-visible texture object ID */
1302 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1303 GLfloat Priority
; /**< in [0,1] */
1304 GLfloat BorderColor
[4]; /**< unclamped */
1305 GLenum WrapS
; /**< S-axis texture image wrap mode */
1306 GLenum WrapT
; /**< T-axis texture image wrap mode */
1307 GLenum WrapR
; /**< R-axis texture image wrap mode */
1308 GLenum MinFilter
; /**< minification filter */
1309 GLenum MagFilter
; /**< magnification filter */
1310 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1311 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1312 GLfloat LodBias
; /**< OpenGL 1.4 */
1313 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1314 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1315 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1316 GLenum CompareMode
; /**< GL_ARB_shadow */
1317 GLenum CompareFunc
; /**< GL_ARB_shadow */
1318 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1319 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1320 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1321 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1322 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1323 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1324 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1325 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1326 GLboolean _Complete
; /**< Is texture object complete? */
1327 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1329 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1330 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1332 /** GL_EXT_paletted_texture */
1333 struct gl_color_table Palette
;
1336 * \name For device driver.
1337 * Note: instead of attaching driver data to this pointer, it's preferable
1338 * to instead use this struct as a base class for your own texture object
1339 * class. Driver->NewTextureObject() can be used to implement the
1342 void *DriverData
; /**< Arbitrary device driver data */
1346 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1347 #define MAX_COMBINER_TERMS 4
1351 * Texture combine environment state.
1353 struct gl_tex_env_combine_state
1355 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1356 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1357 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1358 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1359 GLenum SourceA
[MAX_COMBINER_TERMS
];
1360 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1361 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1362 GLenum OperandA
[MAX_COMBINER_TERMS
];
1363 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1364 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1365 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1366 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1371 * Texture coord generation state.
1375 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1376 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1377 GLfloat ObjectPlane
[4];
1378 GLfloat EyePlane
[4];
1383 * Texture unit state. Contains enable flags, texture environment/function/
1384 * combiners, texgen state, pointers to current texture objects and
1385 * post-filter color tables.
1387 struct gl_texture_unit
1389 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1390 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1392 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1393 GLfloat EnvColor
[4];
1395 struct gl_texgen GenS
;
1396 struct gl_texgen GenT
;
1397 struct gl_texgen GenR
;
1398 struct gl_texgen GenQ
;
1399 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1400 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1402 GLfloat LodBias
; /**< for biasing mipmap levels */
1404 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1407 * \name GL_EXT_texture_env_combine
1409 struct gl_tex_env_combine_state Combine
;
1412 * Derived state based on \c EnvMode and the \c BaseFormat of the
1413 * currently enabled texture.
1415 struct gl_tex_env_combine_state _EnvMode
;
1418 * Currently enabled combiner state. This will point to either
1419 * \c Combine or \c _EnvMode.
1421 struct gl_tex_env_combine_state
*_CurrentCombine
;
1423 /** Current texture object pointers */
1424 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1426 /** Points to highest priority, complete and enabled texture object */
1427 struct gl_texture_object
*_Current
;
1429 /** GL_SGI_texture_color_table */
1431 struct gl_color_table ColorTable
;
1432 struct gl_color_table ProxyColorTable
;
1433 GLboolean ColorTableEnabled
;
1439 * Texture attribute group (GL_TEXTURE_BIT).
1441 struct gl_texture_attrib
1443 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1444 struct gl_texture_unit Unit
[MAX_TEXTURE_UNITS
];
1446 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1448 /** GL_ARB_seamless_cubemap */
1449 GLboolean CubeMapSeamless
;
1451 /** GL_EXT_shared_texture_palette */
1452 GLboolean SharedPalette
;
1453 struct gl_color_table Palette
;
1455 /** Texture units/samplers used by vertex or fragment texturing */
1456 GLbitfield _EnabledUnits
;
1458 /** Texture coord units/sets used for fragment texturing */
1459 GLbitfield _EnabledCoordUnits
;
1461 /** Texture coord units that have texgen enabled */
1462 GLbitfield _TexGenEnabled
;
1464 /** Texture coord units that have non-identity matrices */
1465 GLbitfield _TexMatEnabled
;
1467 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1468 GLbitfield _GenFlags
;
1473 * Transformation attribute group (GL_TRANSFORM_BIT).
1475 struct gl_transform_attrib
1477 GLenum MatrixMode
; /**< Matrix mode */
1478 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1479 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1480 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1481 GLboolean Normalize
; /**< Normalize all normals? */
1482 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1483 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1485 GLboolean CullVertexFlag
; /**< True if GL_CULL_VERTEX_EXT is enabled */
1486 GLfloat CullEyePos
[4];
1487 GLfloat CullObjPos
[4];
1492 * Viewport attribute group (GL_VIEWPORT_BIT).
1494 struct gl_viewport_attrib
1496 GLint X
, Y
; /**< position */
1497 GLsizei Width
, Height
; /**< size */
1498 GLfloat Near
, Far
; /**< Depth buffer range */
1499 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1504 * GL_ARB_vertex/pixel_buffer_object buffer object
1506 struct gl_buffer_object
1510 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1511 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1512 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1513 /** Fields describing a mapped buffer */
1515 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1516 GLvoid
*Pointer
; /**< User-space address of mapping */
1517 GLintptr Offset
; /**< Mapped offset */
1518 GLsizeiptr Length
; /**< Mapped length */
1520 GLboolean Written
; /**< Ever written to? (for debugging) */
1525 * Client pixel packing/unpacking attributes
1527 struct gl_pixelstore_attrib
1535 GLboolean SwapBytes
;
1537 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1538 GLboolean Invert
; /**< GL_MESA_pack_invert */
1539 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1544 * Client vertex array attributes
1546 struct gl_client_array
1548 GLint Size
; /**< components per element (1,2,3,4) */
1549 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1550 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1551 GLsizei Stride
; /**< user-specified stride */
1552 GLsizei StrideB
; /**< actual stride in bytes */
1553 const GLubyte
*Ptr
; /**< Points to array data */
1554 GLboolean Enabled
; /**< Enabled flag is a boolean */
1555 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1556 GLuint _ElementSize
; /**< size of each element in bytes */
1558 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1559 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1564 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1565 * extension, but a nice encapsulation in any case.
1567 struct gl_array_object
1569 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1573 _glthread_Mutex Mutex
;
1574 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1576 /** Conventional vertex arrays */
1578 struct gl_client_array Vertex
;
1579 struct gl_client_array Weight
;
1580 struct gl_client_array Normal
;
1581 struct gl_client_array Color
;
1582 struct gl_client_array SecondaryColor
;
1583 struct gl_client_array FogCoord
;
1584 struct gl_client_array Index
;
1585 struct gl_client_array EdgeFlag
;
1586 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1587 struct gl_client_array PointSize
;
1591 * Generic arrays for vertex programs/shaders.
1592 * For NV vertex programs, these attributes alias and take priority
1593 * over the conventional attribs above. For ARB vertex programs and
1594 * GLSL vertex shaders, these attributes are separate.
1596 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1598 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1599 GLbitfield _Enabled
;
1602 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1603 * we can determine the max legal (in bounds) glDrawElements array index.
1610 * Vertex array state
1612 struct gl_array_attrib
1614 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1615 struct gl_array_object
*ArrayObj
;
1617 /** The default vertex array object */
1618 struct gl_array_object
*DefaultArrayObj
;
1620 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1621 struct _mesa_HashTable
*Objects
;
1623 GLint ActiveTexture
; /**< Client Active Texture */
1624 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1625 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1627 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1629 #if FEATURE_ARB_vertex_buffer_object
1630 struct gl_buffer_object
*ArrayBufferObj
;
1631 struct gl_buffer_object
*ElementArrayBufferObj
;
1637 * Feedback buffer state
1642 GLbitfield _Mask
; /**< FB_* bits */
1650 * Selection buffer state
1654 GLuint
*Buffer
; /**< selection buffer */
1655 GLuint BufferSize
; /**< size of the selection buffer */
1656 GLuint BufferCount
; /**< number of values in the selection buffer */
1657 GLuint Hits
; /**< number of records in the selection buffer */
1658 GLuint NameStackDepth
; /**< name stack depth */
1659 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1660 GLboolean HitFlag
; /**< hit flag */
1661 GLfloat HitMinZ
; /**< minimum hit depth */
1662 GLfloat HitMaxZ
; /**< maximum hit depth */
1667 * 1-D Evaluator control points
1671 GLuint Order
; /**< Number of control points */
1672 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1673 GLfloat
*Points
; /**< Points to contiguous control points */
1678 * 2-D Evaluator control points
1682 GLuint Uorder
; /**< Number of control points in U dimension */
1683 GLuint Vorder
; /**< Number of control points in V dimension */
1686 GLfloat
*Points
; /**< Points to contiguous control points */
1691 * All evaluator control point state
1693 struct gl_evaluators
1699 struct gl_1d_map Map1Vertex3
;
1700 struct gl_1d_map Map1Vertex4
;
1701 struct gl_1d_map Map1Index
;
1702 struct gl_1d_map Map1Color4
;
1703 struct gl_1d_map Map1Normal
;
1704 struct gl_1d_map Map1Texture1
;
1705 struct gl_1d_map Map1Texture2
;
1706 struct gl_1d_map Map1Texture3
;
1707 struct gl_1d_map Map1Texture4
;
1708 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1715 struct gl_2d_map Map2Vertex3
;
1716 struct gl_2d_map Map2Vertex4
;
1717 struct gl_2d_map Map2Index
;
1718 struct gl_2d_map Map2Color4
;
1719 struct gl_2d_map Map2Normal
;
1720 struct gl_2d_map Map2Texture1
;
1721 struct gl_2d_map Map2Texture2
;
1722 struct gl_2d_map Map2Texture3
;
1723 struct gl_2d_map Map2Texture4
;
1724 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1730 * Names of the various vertex/fragment program register files, etc.
1732 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1733 * All values should fit in a 4-bit field.
1735 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1736 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1737 * be "uniform" variables since they can only be set outside glBegin/End.
1738 * They're also all stored in the same Parameters array.
1742 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1743 PROGRAM_INPUT
, /**< machine->Inputs[] */
1744 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1745 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1746 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1747 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1748 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1749 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1750 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1751 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1752 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1753 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1754 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1755 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1760 /** Vertex and fragment instructions */
1761 struct prog_instruction
;
1762 struct gl_program_parameter_list
;
1763 struct gl_uniform_list
;
1767 * Base class for any kind of program object
1772 GLubyte
*String
; /**< Null-terminated program text */
1774 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1775 GLenum Format
; /**< String encoding format */
1778 struct prog_instruction
*Instructions
;
1780 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1781 GLbitfield OutputsWritten
; /**< Bitmask of which output regs are written to */
1782 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1783 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1784 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1785 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1786 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1789 /** Named parameters, constants, etc. from program text */
1790 struct gl_program_parameter_list
*Parameters
;
1791 /** Numbered local parameters */
1792 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1794 /** Vertex/fragment shader varying vars */
1795 struct gl_program_parameter_list
*Varying
;
1796 /** Vertex program user-defined attributes */
1797 struct gl_program_parameter_list
*Attributes
;
1799 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1800 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1801 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1802 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1804 /** Logical counts */
1806 GLuint NumInstructions
;
1807 GLuint NumTemporaries
;
1808 GLuint NumParameters
;
1809 GLuint NumAttributes
;
1810 GLuint NumAddressRegs
;
1811 GLuint NumAluInstructions
;
1812 GLuint NumTexInstructions
;
1813 GLuint NumTexIndirections
;
1815 /** Native, actual h/w counts */
1817 GLuint NumNativeInstructions
;
1818 GLuint NumNativeTemporaries
;
1819 GLuint NumNativeParameters
;
1820 GLuint NumNativeAttributes
;
1821 GLuint NumNativeAddressRegs
;
1822 GLuint NumNativeAluInstructions
;
1823 GLuint NumNativeTexInstructions
;
1824 GLuint NumNativeTexIndirections
;
1829 /** Vertex program object */
1830 struct gl_vertex_program
1832 struct gl_program Base
; /**< base class */
1833 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1834 GLboolean IsPositionInvariant
;
1835 void *TnlData
; /**< should probably use Base.DriverData */
1839 /** Fragment program object */
1840 struct gl_fragment_program
1842 struct gl_program Base
; /**< base class */
1844 GLboolean UsesKill
; /**< shader uses KIL instruction */
1849 * State common to vertex and fragment programs.
1851 struct gl_program_state
1853 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1854 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1859 * Context state for vertex programs.
1861 struct gl_vertex_program_state
1863 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1864 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1865 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1866 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1867 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1869 /** Currently enabled and valid vertex program (including internal
1870 * programs, user-defined vertex programs and GLSL vertex shaders).
1871 * This is the program we must use when rendering.
1873 struct gl_vertex_program
*_Current
;
1875 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1877 /* For GL_NV_vertex_program only: */
1878 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1879 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1881 /** Should fixed-function T&L be implemented with a vertex prog? */
1882 GLboolean _MaintainTnlProgram
;
1884 /** Program to emulate fixed-function T&L (see above) */
1885 struct gl_vertex_program
*_TnlProgram
;
1887 /** Cache of fixed-function programs */
1888 struct gl_program_cache
*Cache
;
1890 GLboolean _Overriden
;
1895 * Context state for fragment programs.
1897 struct gl_fragment_program_state
1899 GLboolean Enabled
; /**< User-set fragment program enable flag */
1900 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1901 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1903 /** Currently enabled and valid fragment program (including internal
1904 * programs, user-defined fragment programs and GLSL fragment shaders).
1905 * This is the program we must use when rendering.
1907 struct gl_fragment_program
*_Current
;
1909 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1911 /** Should fixed-function texturing be implemented with a fragment prog? */
1912 GLboolean _MaintainTexEnvProgram
;
1914 /** Program to emulate fixed-function texture env/combine (see above) */
1915 struct gl_fragment_program
*_TexEnvProgram
;
1917 /** Cache of fixed-function programs */
1918 struct gl_program_cache
*Cache
;
1923 * ATI_fragment_shader runtime state
1925 #define ATI_FS_INPUT_PRIMARY 0
1926 #define ATI_FS_INPUT_SECONDARY 1
1928 struct atifs_instruction
;
1929 struct atifs_setupinst
;
1932 * ATI fragment shader
1934 struct ati_fragment_shader
1938 struct atifs_instruction
*Instructions
[2];
1939 struct atifs_setupinst
*SetupInst
[2];
1940 GLfloat Constants
[8][4];
1941 GLbitfield LocalConstDef
; /** Indicates which constants have been set */
1942 GLubyte numArithInstr
[2];
1943 GLubyte regsAssigned
[2];
1944 GLubyte NumPasses
; /** 1 or 2 */
1946 GLubyte last_optype
;
1947 GLboolean interpinp1
;
1953 * Context state for GL_ATI_fragment_shader
1955 struct gl_ati_fragment_shader_state
1958 GLboolean _Enabled
; /** enabled and valid shader? */
1959 GLboolean Compiling
;
1960 GLfloat GlobalConstants
[8][4];
1961 struct ati_fragment_shader
*Current
;
1966 * Occlusion/timer query object.
1968 struct gl_query_object
1970 GLenum Target
; /**< The query target, when active */
1971 GLuint Id
; /**< hash table ID/name */
1972 GLuint64EXT Result
; /**< the counter */
1973 GLboolean Active
; /**< inside Begin/EndQuery */
1974 GLboolean Ready
; /**< result is ready? */
1979 * Context state for query objects.
1981 struct gl_query_state
1983 struct _mesa_HashTable
*QueryObjects
;
1984 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
1985 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
1989 /** Set by #pragma directives */
1990 struct gl_sl_pragmas
1992 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
1993 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
1994 GLboolean Optimize
; /**< defaults on */
1995 GLboolean Debug
; /**< defaults off */
2000 * A GLSL vertex or fragment shader object.
2004 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER (first field!) */
2005 GLuint Name
; /**< AKA the handle */
2006 GLint RefCount
; /**< Reference count */
2007 GLboolean DeletePending
;
2008 GLboolean CompileStatus
;
2009 GLboolean Main
; /**< shader defines main() */
2010 GLboolean UnresolvedRefs
;
2011 const GLchar
*Source
; /**< Source code string */
2012 GLuint SourceChecksum
; /**< for debug/logging purposes */
2013 struct gl_program
*Program
; /**< Post-compile assembly code */
2015 struct gl_sl_pragmas Pragmas
;
2020 * A GLSL program object.
2021 * Basically a linked collection of vertex and fragment shaders.
2023 struct gl_shader_program
2025 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2026 GLuint Name
; /**< aka handle or ID */
2027 GLint RefCount
; /**< Reference count */
2028 GLboolean DeletePending
;
2030 GLuint NumShaders
; /**< number of attached shaders */
2031 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2033 /** User-defined attribute bindings (glBindAttribLocation) */
2034 struct gl_program_parameter_list
*Attributes
;
2036 /* post-link info: */
2037 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2038 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2039 struct gl_uniform_list
*Uniforms
;
2040 struct gl_program_parameter_list
*Varying
;
2041 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2042 GLboolean Validated
;
2043 GLboolean _Used
; /**< Ever used for drawing? */
2048 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2049 #define GLSL_LOG 0x2 /**< Write shaders to files */
2050 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2051 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2052 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2056 * Context state for GLSL vertex/fragment shaders.
2058 struct gl_shader_state
2060 struct gl_shader_program
*CurrentProgram
; /**< The user-bound program */
2061 /** Driver-selectable options: */
2062 GLboolean EmitHighLevelInstructions
; /**< IF/ELSE/ENDIF vs. BRA, etc. */
2063 GLboolean EmitContReturn
; /**< Emit CONT/RET opcodes? */
2064 GLboolean EmitCondCodes
; /**< Use condition codes? */
2065 GLboolean EmitComments
; /**< Annotated instructions */
2067 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2068 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2073 * State which can be shared by multiple contexts:
2075 struct gl_shared_state
2077 _glthread_Mutex Mutex
; /**< for thread safety */
2078 GLint RefCount
; /**< Reference count */
2079 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2080 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2082 /** Default texture objects (shared by all texture units) */
2083 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2085 /** Fallback texture used when a bound texture is incomplete */
2086 struct gl_texture_object
*FallbackTex
;
2089 * \name Thread safety and statechange notification for texture
2092 * \todo Improve the granularity of locking.
2095 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2096 GLuint TextureStateStamp
; /**< state notification for shared tex */
2099 /** Default buffer object for vertex arrays that aren't in VBOs */
2100 struct gl_buffer_object
*NullBufferObj
;
2103 * \name Vertex/fragment programs
2106 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2107 #if FEATURE_ARB_vertex_program
2108 struct gl_vertex_program
*DefaultVertexProgram
;
2110 #if FEATURE_ARB_fragment_program
2111 struct gl_fragment_program
*DefaultFragmentProgram
;
2115 #if FEATURE_ATI_fragment_shader
2116 struct _mesa_HashTable
*ATIShaders
;
2117 struct ati_fragment_shader
*DefaultFragmentShader
;
2120 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
2121 struct _mesa_HashTable
*BufferObjects
;
2124 #if FEATURE_ARB_shader_objects
2125 /** Table of both gl_shader and gl_shader_program objects */
2126 struct _mesa_HashTable
*ShaderObjects
;
2129 #if FEATURE_EXT_framebuffer_object
2130 struct _mesa_HashTable
*RenderBuffers
;
2131 struct _mesa_HashTable
*FrameBuffers
;
2134 void *DriverData
; /**< Device driver shared state */
2141 * A renderbuffer stores colors or depth values or stencil values.
2142 * A framebuffer object will have a collection of these.
2143 * Data are read/written to the buffer with a handful of Get/Put functions.
2145 * Instances of this object are allocated with the Driver's NewRenderbuffer
2146 * hook. Drivers will likely wrap this class inside a driver-specific
2147 * class to simulate inheritance.
2149 struct gl_renderbuffer
2151 #define RB_MAGIC 0xaabbccdd
2152 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2153 _glthread_Mutex Mutex
; /**< for thread safety */
2154 GLuint ClassID
; /**< Useful for drivers */
2157 GLuint Width
, Height
;
2158 GLenum InternalFormat
; /**< The user-specified format */
2159 GLenum _ActualFormat
; /**< The driver-chosen format */
2160 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2161 GL_STENCIL_INDEX. */
2162 GLenum ColorEncoding
; /**< GL_LINEAR or GL_SRGB */
2163 GLenum ComponentType
; /**< GL_FLOAT, GL_INT, GL_UNSIGNED_INT,
2164 GL_UNSIGNED_NORMALIZED or GL_INDEX */
2165 GLubyte RedBits
; /**< Bits of red per pixel */
2171 GLubyte StencilBits
;
2174 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2175 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2177 /* Used to wrap one renderbuffer around another: */
2178 struct gl_renderbuffer
*Wrapped
;
2180 /* Delete this renderbuffer */
2181 void (*Delete
)(struct gl_renderbuffer
*rb
);
2183 /* Allocate new storage for this renderbuffer */
2184 GLboolean (*AllocStorage
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2185 GLenum internalFormat
,
2186 GLuint width
, GLuint height
);
2188 /* Lock/Unlock are called before/after calling the Get/Put functions.
2189 * Not sure this is the right place for these yet.
2190 void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2191 void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2194 /* Return a pointer to the element/pixel at (x,y).
2195 * Should return NULL if the buffer memory can't be directly addressed.
2197 void *(*GetPointer
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2200 /* Get/Read a row of values.
2201 * The values will be of format _BaseFormat and type DataType.
2203 void (*GetRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2204 GLint x
, GLint y
, void *values
);
2206 /* Get/Read values at arbitrary locations.
2207 * The values will be of format _BaseFormat and type DataType.
2209 void (*GetValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2210 const GLint x
[], const GLint y
[], void *values
);
2212 /* Put/Write a row of values.
2213 * The values will be of format _BaseFormat and type DataType.
2215 void (*PutRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2216 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2218 /* Put/Write a row of RGB values. This is a special-case routine that's
2219 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2220 * a common case for glDrawPixels and some triangle routines.
2221 * The values will be of format GL_RGB and type DataType.
2223 void (*PutRowRGB
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2224 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2227 /* Put/Write a row of identical values.
2228 * The values will be of format _BaseFormat and type DataType.
2230 void (*PutMonoRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2231 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2233 /* Put/Write values at arbitrary locations.
2234 * The values will be of format _BaseFormat and type DataType.
2236 void (*PutValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2237 const GLint x
[], const GLint y
[], const void *values
,
2238 const GLubyte
*mask
);
2239 /* Put/Write identical values at arbitrary locations.
2240 * The values will be of format _BaseFormat and type DataType.
2242 void (*PutMonoValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2243 GLuint count
, const GLint x
[], const GLint y
[],
2244 const void *value
, const GLubyte
*mask
);
2249 * A renderbuffer attachment points to either a texture object (and specifies
2250 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2252 struct gl_renderbuffer_attachment
2254 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2258 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2259 * application supplied renderbuffer object.
2261 struct gl_renderbuffer
*Renderbuffer
;
2264 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2265 * supplied texture object.
2267 struct gl_texture_object
*Texture
;
2268 GLuint TextureLevel
; /**< Attached mipmap level. */
2269 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2270 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2271 * and 2D array textures */
2276 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2277 * In C++ terms, think of this as a base class from which device drivers
2278 * will make derived classes.
2280 struct gl_framebuffer
2282 _glthread_Mutex Mutex
; /**< for thread safety */
2284 * If zero, this is a window system framebuffer. If non-zero, this
2285 * is a FBO framebuffer; note that for some devices (i.e. those with
2286 * a natural pixel coordinate system for FBOs that differs from the
2287 * OpenGL/Mesa coordinate system), this means that the viewport,
2288 * polygon face orientation, and polygon stipple will have to be inverted.
2293 GLboolean DeletePending
;
2296 * The framebuffer's visual. Immutable if this is a window system buffer.
2297 * Computed from attachments if user-made FBO.
2301 GLboolean Initialized
;
2303 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2305 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2307 GLint _Xmin
, _Xmax
; /**< inclusive */
2308 GLint _Ymin
, _Ymax
; /**< exclusive */
2311 /** \name Derived Z buffer stuff */
2313 GLuint _DepthMax
; /**< Max depth buffer value */
2314 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2315 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2318 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2321 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2322 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2324 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2325 * attribute group and GL_PIXEL attribute group, respectively.
2327 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2328 GLenum ColorReadBuffer
;
2330 /** Computed from ColorDraw/ReadBuffer above */
2331 GLuint _NumColorDrawBuffers
;
2332 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2333 GLint _ColorReadBufferIndex
; /* -1 = None */
2334 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2335 struct gl_renderbuffer
*_ColorReadBuffer
;
2337 /** The Actual depth/stencil buffers to use. May be wrappers around the
2338 * depth/stencil buffers attached above. */
2339 struct gl_renderbuffer
*_DepthBuffer
;
2340 struct gl_renderbuffer
*_StencilBuffer
;
2342 /** Delete this framebuffer */
2343 void (*Delete
)(struct gl_framebuffer
*fb
);
2348 * Limits for vertex and fragment programs.
2350 struct gl_program_constants
2352 /* logical limits */
2353 GLuint MaxInstructions
;
2354 GLuint MaxAluInstructions
; /* fragment programs only, for now */
2355 GLuint MaxTexInstructions
; /* fragment programs only, for now */
2356 GLuint MaxTexIndirections
; /* fragment programs only, for now */
2359 GLuint MaxAddressRegs
; /* vertex program only, for now */
2360 GLuint MaxParameters
;
2361 GLuint MaxLocalParams
;
2362 GLuint MaxEnvParams
;
2363 /* native/hardware limits */
2364 GLuint MaxNativeInstructions
;
2365 GLuint MaxNativeAluInstructions
; /* fragment programs only, for now */
2366 GLuint MaxNativeTexInstructions
; /* fragment programs only, for now */
2367 GLuint MaxNativeTexIndirections
; /* fragment programs only, for now */
2368 GLuint MaxNativeAttribs
;
2369 GLuint MaxNativeTemps
;
2370 GLuint MaxNativeAddressRegs
; /* vertex program only, for now */
2371 GLuint MaxNativeParameters
;
2373 GLuint MaxUniformComponents
;
2378 * Constants which may be overridden by device driver during context creation
2379 * but are never changed after that.
2383 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2384 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2385 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2386 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2387 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2388 GLuint MaxTextureCoordUnits
;
2389 GLuint MaxTextureImageUnits
;
2390 GLuint MaxVertexTextureImageUnits
;
2391 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2392 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2393 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2395 GLuint MaxArrayLockSize
;
2399 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2400 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2401 GLfloat PointSizeGranularity
;
2402 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2403 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2404 GLfloat LineWidthGranularity
;
2406 GLuint MaxColorTableSize
;
2407 GLuint MaxConvolutionWidth
;
2408 GLuint MaxConvolutionHeight
;
2410 GLuint MaxClipPlanes
;
2412 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2413 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2415 GLuint MaxViewportWidth
, MaxViewportHeight
;
2417 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2418 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2419 GLuint MaxProgramMatrices
;
2420 GLuint MaxProgramMatrixStackDepth
;
2422 /** vertex array / buffer object bounds checking */
2423 GLboolean CheckArrayBounds
;
2425 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2427 GLenum ColorReadFormat
; /**< GL_OES_read_format */
2428 GLenum ColorReadType
; /**< GL_OES_read_format */
2430 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2431 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2432 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2434 GLuint MaxVarying
; /**< Number of float[4] varying parameters */
2436 GLbitfield SupportedBumpUnits
; /**> units supporting GL_ATI_envmap_bumpmap as targets */
2438 /**< GL_EXT_provoking_vertex */
2439 GLboolean QuadsFollowProvokingVertexConvention
;
2444 * Enable flag for each OpenGL extension. Different device drivers will
2445 * enable different extensions at runtime.
2447 struct gl_extensions
2449 GLboolean dummy
; /* don't remove this! */
2450 GLboolean ARB_copy_buffer
;
2451 GLboolean ARB_depth_texture
;
2452 GLboolean ARB_draw_buffers
;
2453 GLboolean ARB_fragment_program
;
2454 GLboolean ARB_fragment_program_shadow
;
2455 GLboolean ARB_fragment_shader
;
2456 GLboolean ARB_framebuffer_object
;
2457 GLboolean ARB_half_float_pixel
;
2458 GLboolean ARB_imaging
;
2459 GLboolean ARB_map_buffer_range
;
2460 GLboolean ARB_multisample
;
2461 GLboolean ARB_multitexture
;
2462 GLboolean ARB_occlusion_query
;
2463 GLboolean ARB_point_sprite
;
2464 GLboolean ARB_seamless_cube_map
;
2465 GLboolean ARB_shader_objects
;
2466 GLboolean ARB_shading_language_100
;
2467 GLboolean ARB_shading_language_120
;
2468 GLboolean ARB_shadow
;
2469 GLboolean ARB_shadow_ambient
; /* or GL_ARB_shadow_ambient */
2470 GLboolean ARB_texture_border_clamp
;
2471 GLboolean ARB_texture_compression
;
2472 GLboolean ARB_texture_cube_map
;
2473 GLboolean ARB_texture_env_combine
;
2474 GLboolean ARB_texture_env_crossbar
;
2475 GLboolean ARB_texture_env_dot3
;
2476 GLboolean ARB_texture_float
;
2477 GLboolean ARB_texture_mirrored_repeat
;
2478 GLboolean ARB_texture_non_power_of_two
;
2479 GLboolean ARB_transpose_matrix
;
2480 GLboolean ARB_vertex_array_object
;
2481 GLboolean ARB_vertex_buffer_object
;
2482 GLboolean ARB_vertex_program
;
2483 GLboolean ARB_vertex_shader
;
2484 GLboolean ARB_window_pos
;
2487 GLboolean EXT_blend_color
;
2488 GLboolean EXT_blend_equation_separate
;
2489 GLboolean EXT_blend_func_separate
;
2490 GLboolean EXT_blend_logic_op
;
2491 GLboolean EXT_blend_minmax
;
2492 GLboolean EXT_blend_subtract
;
2493 GLboolean EXT_clip_volume_hint
;
2494 GLboolean EXT_cull_vertex
;
2495 GLboolean EXT_convolution
;
2496 GLboolean EXT_compiled_vertex_array
;
2497 GLboolean EXT_copy_texture
;
2498 GLboolean EXT_depth_bounds_test
;
2499 GLboolean EXT_draw_range_elements
;
2500 GLboolean EXT_framebuffer_object
;
2501 GLboolean EXT_fog_coord
;
2502 GLboolean EXT_framebuffer_blit
;
2503 GLboolean EXT_gpu_program_parameters
;
2504 GLboolean EXT_histogram
;
2505 GLboolean EXT_multi_draw_arrays
;
2506 GLboolean EXT_paletted_texture
;
2507 GLboolean EXT_packed_depth_stencil
;
2508 GLboolean EXT_packed_pixels
;
2509 GLboolean EXT_pixel_buffer_object
;
2510 GLboolean EXT_point_parameters
;
2511 GLboolean EXT_polygon_offset
;
2512 GLboolean EXT_provoking_vertex
;
2513 GLboolean EXT_rescale_normal
;
2514 GLboolean EXT_shadow_funcs
;
2515 GLboolean EXT_secondary_color
;
2516 GLboolean EXT_separate_specular_color
;
2517 GLboolean EXT_shared_texture_palette
;
2518 GLboolean EXT_stencil_wrap
;
2519 GLboolean EXT_stencil_two_side
;
2520 GLboolean EXT_subtexture
;
2521 GLboolean EXT_texture
;
2522 GLboolean EXT_texture_object
;
2523 GLboolean EXT_texture3D
;
2524 GLboolean EXT_texture_compression_s3tc
;
2525 GLboolean EXT_texture_env_add
;
2526 GLboolean EXT_texture_env_combine
;
2527 GLboolean EXT_texture_env_dot3
;
2528 GLboolean EXT_texture_filter_anisotropic
;
2529 GLboolean EXT_texture_lod_bias
;
2530 GLboolean EXT_texture_mirror_clamp
;
2531 GLboolean EXT_texture_sRGB
;
2532 GLboolean EXT_texture_swizzle
;
2533 GLboolean EXT_timer_query
;
2534 GLboolean EXT_vertex_array
;
2535 GLboolean EXT_vertex_array_bgra
;
2536 GLboolean EXT_vertex_array_set
;
2537 /* vendor extensions */
2538 GLboolean APPLE_client_storage
;
2539 GLboolean APPLE_packed_pixels
;
2540 GLboolean APPLE_vertex_array_object
;
2541 GLboolean ATI_envmap_bumpmap
;
2542 GLboolean ATI_texture_mirror_once
;
2543 GLboolean ATI_texture_env_combine3
;
2544 GLboolean ATI_fragment_shader
;
2545 GLboolean ATI_separate_stencil
;
2546 GLboolean IBM_rasterpos_clip
;
2547 GLboolean IBM_multimode_draw_arrays
;
2548 GLboolean MESA_pack_invert
;
2549 GLboolean MESA_packed_depth_stencil
;
2550 GLboolean MESA_resize_buffers
;
2551 GLboolean MESA_ycbcr_texture
;
2552 GLboolean MESA_texture_array
;
2553 GLboolean MESA_texture_signed_rgba
;
2554 GLboolean NV_blend_square
;
2555 GLboolean NV_fragment_program
;
2556 GLboolean NV_light_max_exponent
;
2557 GLboolean NV_point_sprite
;
2558 GLboolean NV_texgen_reflection
;
2559 GLboolean NV_texture_env_combine4
;
2560 GLboolean NV_texture_rectangle
;
2561 GLboolean NV_vertex_program
;
2562 GLboolean NV_vertex_program1_1
;
2563 GLboolean OES_read_format
;
2564 GLboolean SGI_color_matrix
;
2565 GLboolean SGI_color_table
;
2566 GLboolean SGI_texture_color_table
;
2567 GLboolean SGIS_generate_mipmap
;
2568 GLboolean SGIS_texture_edge_clamp
;
2569 GLboolean SGIS_texture_lod
;
2570 GLboolean TDFX_texture_compression_FXT1
;
2572 /** The extension string */
2573 const GLubyte
*String
;
2578 * A stack of matrices (projection, modelview, color, texture, etc).
2580 struct gl_matrix_stack
2582 GLmatrix
*Top
; /**< points into Stack */
2583 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2584 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2585 GLuint MaxDepth
; /**< size of Stack[] array */
2586 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2591 * \name Bits for image transfer operations
2592 * \sa __GLcontextRec::ImageTransferState.
2595 #define IMAGE_SCALE_BIAS_BIT 0x1
2596 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2597 #define IMAGE_MAP_COLOR_BIT 0x4
2598 #define IMAGE_COLOR_TABLE_BIT 0x8
2599 #define IMAGE_CONVOLUTION_BIT 0x10
2600 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2601 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2602 #define IMAGE_COLOR_MATRIX_BIT 0x80
2603 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2604 #define IMAGE_HISTOGRAM_BIT 0x200
2605 #define IMAGE_MIN_MAX_BIT 0x400
2606 #define IMAGE_CLAMP_BIT 0x800
2609 /** Pixel Transfer ops up to convolution */
2610 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2611 IMAGE_SHIFT_OFFSET_BIT | \
2612 IMAGE_MAP_COLOR_BIT | \
2613 IMAGE_COLOR_TABLE_BIT)
2615 /** Pixel transfer ops after convolution */
2616 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2617 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2618 IMAGE_COLOR_MATRIX_BIT | \
2619 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2620 IMAGE_HISTOGRAM_BIT | \
2626 * \name Bits to indicate what state has changed.
2631 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2632 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2633 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2634 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2635 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2636 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2637 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2638 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2639 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2640 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2641 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2642 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2643 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2644 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2645 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2646 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2647 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2648 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2649 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2650 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2651 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2652 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2653 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2654 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2655 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2656 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2657 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2658 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2659 #define _NEW_CURRENT_ATTRIB 0x10000000 /**< __GLcontextRec::Current */
2660 #define _NEW_PROGRAM_CONSTANTS 0x20000000
2661 #define _NEW_BUFFER_OBJECT 0x40000000
2667 * \name Bits to track array state changes
2669 * Also used to summarize array enabled.
2672 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2673 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2674 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2675 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2676 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2677 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2678 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2679 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2680 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2681 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2682 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2683 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2684 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2685 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2686 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2687 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2688 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2689 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2690 #define _NEW_ARRAY_ALL 0xffffffff
2693 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2694 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2700 * \name A bunch of flags that we think might be useful to drivers.
2702 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2705 #define DD_FLATSHADE 0x1
2706 #define DD_SEPARATE_SPECULAR 0x2
2707 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2708 #define DD_TRI_LIGHT_TWOSIDE 0x8
2709 #define DD_TRI_UNFILLED 0x10
2710 #define DD_TRI_SMOOTH 0x20
2711 #define DD_TRI_STIPPLE 0x40
2712 #define DD_TRI_OFFSET 0x80
2713 #define DD_LINE_SMOOTH 0x100
2714 #define DD_LINE_STIPPLE 0x200
2715 #define DD_LINE_WIDTH 0x400
2716 #define DD_POINT_SMOOTH 0x800
2717 #define DD_POINT_SIZE 0x1000
2718 #define DD_POINT_ATTEN 0x2000
2719 #define DD_TRI_TWOSTENCIL 0x4000
2724 * \name Define the state changes under which each of these bits might change
2727 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2728 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2729 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2730 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2731 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2732 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2733 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2734 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2735 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2736 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2737 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2738 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2739 #define _DD_NEW_POINT_SIZE _NEW_POINT
2740 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2745 * Composite state flags
2748 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2754 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2757 #define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL | \
2764 /* This has to be included here. */
2768 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2771 * Core Mesa's support for tnl modules:
2773 struct gl_tnl_module
2776 * Vertex format to be lazily swapped into current dispatch.
2778 const GLvertexformat
*Current
;
2781 * \name Record of functions swapped out.
2782 * On restore, only need to swap these functions back in.
2786 _glapi_proc
* location
;
2787 _glapi_proc function
;
2788 } Swapped
[NUM_VERTEX_FORMAT_ENTRIES
];
2795 * Display list flags.
2796 * Strictly this is a tnl-private concept, but it doesn't seem
2797 * worthwhile adding a tnl private structure just to hold this one bit
2800 #define DLIST_DANGLING_REFS 0x1
2803 /** Opaque declaration of display list payload data type */
2804 union gl_dlist_node
;
2808 * Provide a location where information about a display list can be
2809 * collected. Could be extended with driverPrivate structures,
2810 * etc. in the future.
2812 struct gl_display_list
2815 GLbitfield Flags
; /**< DLIST_x flags */
2816 /** The dlist commands are in a linked list of nodes */
2817 union gl_dlist_node
*Head
;
2822 * State used during display list compilation and execution.
2824 struct gl_dlist_state
2826 GLuint CallDepth
; /**< Current recursion calling depth */
2828 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
2829 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
2830 GLuint CurrentPos
; /**< Index into current block of nodes */
2832 GLvertexformat ListVtxfmt
;
2834 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
2835 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
2837 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
2838 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
2840 GLubyte ActiveIndex
;
2841 GLfloat CurrentIndex
;
2843 GLubyte ActiveEdgeFlag
;
2844 GLboolean CurrentEdgeFlag
;
2847 /* State known to have been set by the currently-compiling display
2848 * list. Used to eliminate some redundant state changes.
2856 * Mesa rendering context.
2858 * This is the central context data structure for Mesa. Almost all
2859 * OpenGL state is contained in this structure.
2860 * Think of this as a base class from which device drivers will derive
2863 * The GLcontext typedef names this structure.
2865 struct __GLcontextRec
2867 /** State possibly shared with other contexts in the address space */
2868 struct gl_shared_state
*Shared
;
2870 /** \name API function pointer tables */
2872 struct _glapi_table
*Save
; /**< Display list save functions */
2873 struct _glapi_table
*Exec
; /**< Execute functions */
2874 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
2878 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
2879 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
2880 GLframebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
2881 GLframebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
2884 * Device driver function pointer table
2886 struct dd_function_table Driver
;
2888 void *DriverCtx
; /**< Points to device driver context/state */
2890 /** Core/Driver constants */
2891 struct gl_constants Const
;
2893 /** \name The various 4x4 matrix stacks */
2895 struct gl_matrix_stack ModelviewMatrixStack
;
2896 struct gl_matrix_stack ProjectionMatrixStack
;
2897 struct gl_matrix_stack ColorMatrixStack
;
2898 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
2899 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
2900 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
2903 /** Combined modelview and projection matrix */
2904 GLmatrix _ModelProjectMatrix
;
2906 /** \name Display lists */
2907 struct gl_dlist_state ListState
;
2909 GLboolean ExecuteFlag
; /**< Execute GL commands? */
2910 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
2912 /** Extension information */
2913 struct gl_extensions Extensions
;
2915 /** \name State attribute stack (for glPush/PopAttrib) */
2917 GLuint AttribStackDepth
;
2918 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
2921 /** \name Renderer attribute groups
2923 * We define a struct for each attribute group to make pushing and popping
2924 * attributes easy. Also it's a good organization.
2927 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
2928 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
2929 struct gl_current_attrib Current
; /**< Current attributes */
2930 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
2931 struct gl_eval_attrib Eval
; /**< Eval attributes */
2932 struct gl_fog_attrib Fog
; /**< Fog attributes */
2933 struct gl_hint_attrib Hint
; /**< Hint attributes */
2934 struct gl_light_attrib Light
; /**< Light attributes */
2935 struct gl_line_attrib Line
; /**< Line attributes */
2936 struct gl_list_attrib List
; /**< List attributes */
2937 struct gl_multisample_attrib Multisample
;
2938 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
2939 struct gl_point_attrib Point
; /**< Point attributes */
2940 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
2941 GLuint PolygonStipple
[32]; /**< Polygon stipple */
2942 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
2943 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
2944 struct gl_texture_attrib Texture
; /**< Texture attributes */
2945 struct gl_transform_attrib Transform
; /**< Transformation attributes */
2946 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
2949 /** \name Client attribute stack */
2951 GLuint ClientAttribStackDepth
;
2952 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
2955 /** \name Client attribute groups */
2957 struct gl_array_attrib Array
; /**< Vertex arrays */
2958 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
2959 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
2960 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
2963 /** \name Other assorted state (not pushed/popped on attribute stack) */
2965 struct gl_pixelmaps PixelMaps
;
2966 struct gl_histogram_attrib Histogram
;
2967 struct gl_minmax_attrib MinMax
;
2968 struct gl_convolution_attrib Convolution1D
;
2969 struct gl_convolution_attrib Convolution2D
;
2970 struct gl_convolution_attrib Separable2D
;
2972 struct gl_evaluators EvalMap
; /**< All evaluators */
2973 struct gl_feedback Feedback
; /**< Feedback */
2974 struct gl_selection Select
; /**< Selection */
2976 struct gl_color_table ColorTable
[COLORTABLE_MAX
];
2977 struct gl_color_table ProxyColorTable
[COLORTABLE_MAX
];
2979 struct gl_program_state Program
; /**< general program state */
2980 struct gl_vertex_program_state VertexProgram
;
2981 struct gl_fragment_program_state FragmentProgram
;
2982 struct gl_ati_fragment_shader_state ATIFragmentShader
;
2984 struct gl_shader_state Shader
; /**< GLSL shader object state */
2986 struct gl_query_state Query
; /**< occlusion, timer queries */
2988 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
2989 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
2992 struct gl_meta_state
*Meta
; /**< for "meta" operations */
2994 #if FEATURE_EXT_framebuffer_object
2995 struct gl_renderbuffer
*CurrentRenderbuffer
;
2998 GLenum ErrorValue
; /**< Last error code */
3001 * Recognize and silence repeated error debug messages in buggy apps.
3003 const char *ErrorDebugFmtString
;
3004 GLuint ErrorDebugCount
;
3006 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3007 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3009 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3011 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3013 /** \name Derived state */
3015 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3016 * state validation so they need to always be current.
3018 GLbitfield _TriangleCaps
;
3019 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3020 GLfloat _EyeZDir
[3];
3021 GLfloat _ModelViewInvScale
;
3022 GLboolean _NeedEyeCoords
;
3023 GLboolean _ForceEyeCoords
;
3025 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3027 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3028 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3031 struct gl_list_extensions ListExt
; /**< driver dlist extensions */
3033 /** \name For debugging/development only */
3035 GLboolean FirstTimeCurrent
;
3038 /** Dither disable via MESA_NO_DITHER env var */
3041 /** software compression/decompression supported or not */
3042 GLboolean Mesa_DXTn
;
3045 * Use dp4 (rather than mul/mad) instructions for position
3048 GLboolean mvp_with_dp4
;
3050 /** Core tnl module support */
3051 struct gl_tnl_module TnlModule
;
3054 * \name Hooks for module contexts.
3056 * These will eventually live in the driver or elsewhere.
3059 void *swrast_context
;
3060 void *swsetup_context
;
3061 void *swtnl_context
;
3063 struct st_context
*st
;
3069 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
3070 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
3074 extern int MESA_VERBOSE
;
3075 extern int MESA_DEBUG_FLAGS
;
3076 # define MESA_FUNCTION __FUNCTION__
3078 # define MESA_VERBOSE 0
3079 # define MESA_DEBUG_FLAGS 0
3080 # define MESA_FUNCTION "a function"
3089 VERBOSE_VARRAY
= 0x0001,
3090 VERBOSE_TEXTURE
= 0x0002,
3091 VERBOSE_IMMEDIATE
= 0x0004,
3092 VERBOSE_PIPELINE
= 0x0008,
3093 VERBOSE_DRIVER
= 0x0010,
3094 VERBOSE_STATE
= 0x0020,
3095 VERBOSE_API
= 0x0040,
3096 VERBOSE_DISPLAY_LIST
= 0x0100,
3097 VERBOSE_LIGHTING
= 0x0200,
3098 VERBOSE_PRIMS
= 0x0400,
3099 VERBOSE_VERTS
= 0x0800,
3100 VERBOSE_DISASSEM
= 0x1000,
3106 DEBUG_ALWAYS_FLUSH
= 0x1
3111 #endif /* MTYPES_H */