2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Copyright (C) 1999-2008 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 ('_').
38 #include <GL/internal/glcore.h> /* __GLcontextModes (GLvisual) */
39 #include "config.h" /* Hardwired parameters */
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
46 * Special, internal token
48 #define GL_SHADER_PROGRAM_MESA 0x9999
52 * Color channel data type.
55 typedef GLubyte GLchan
;
57 #define CHAN_MAXF 255.0F
58 #define CHAN_TYPE GL_UNSIGNED_BYTE
60 typedef GLushort GLchan
;
61 #define CHAN_MAX 65535
62 #define CHAN_MAXF 65535.0F
63 #define CHAN_TYPE GL_UNSIGNED_SHORT
65 typedef GLfloat GLchan
;
67 #define CHAN_MAXF 1.0F
68 #define CHAN_TYPE GL_FLOAT
70 #error "illegal number of color channel bits"
75 * Stencil buffer data type.
78 typedef GLubyte GLstencil
;
79 #elif STENCIL_BITS==16
80 typedef GLushort GLstencil
;
82 # error "illegal number of stencil bits"
87 * Fixed point data type.
91 * Fixed point arithmetic macros
93 #ifndef FIXED_FRAC_BITS
94 #define FIXED_FRAC_BITS 11
97 #define FIXED_SHIFT FIXED_FRAC_BITS
98 #define FIXED_ONE (1 << FIXED_SHIFT)
99 #define FIXED_HALF (1 << (FIXED_SHIFT-1))
100 #define FIXED_FRAC_MASK (FIXED_ONE - 1)
101 #define FIXED_INT_MASK (~FIXED_FRAC_MASK)
102 #define FIXED_EPSILON 1
103 #define FIXED_SCALE ((float) FIXED_ONE)
104 #define FIXED_DBL_SCALE ((double) FIXED_ONE)
105 #define FloatToFixed(X) (IROUND((X) * FIXED_SCALE))
106 #define FixedToDouble(X) ((X) * (1.0 / FIXED_DBL_SCALE))
107 #define IntToFixed(I) ((I) << FIXED_SHIFT)
108 #define FixedToInt(X) ((X) >> FIXED_SHIFT)
109 #define FixedToUns(X) (((unsigned int)(X)) >> FIXED_SHIFT)
110 #define FixedCeil(X) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
111 #define FixedFloor(X) ((X) & FIXED_INT_MASK)
112 #define FixedToFloat(X) ((X) * (1.0F / FIXED_SCALE))
113 #define PosFloatToFixed(X) FloatToFixed(X)
114 #define SignedFloatToFixed(X) FloatToFixed(X)
119 * \name Some forward type declarations
122 struct _mesa_HashTable
;
123 struct gl_pixelstore_attrib
;
124 struct gl_program_cache
;
125 struct gl_texture_format
;
126 struct gl_texture_image
;
127 struct gl_texture_object
;
130 typedef struct __GLcontextRec GLcontext
;
131 typedef struct __GLcontextModesRec GLvisual
;
132 typedef struct gl_framebuffer GLframebuffer
;
138 * Indexes for vertex program attributes.
139 * GL_NV_vertex_program aliases generic attributes over the conventional
140 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
141 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
142 * generic attributes are distinct/separate).
147 VERT_ATTRIB_WEIGHT
= 1,
148 VERT_ATTRIB_NORMAL
= 2,
149 VERT_ATTRIB_COLOR0
= 3,
150 VERT_ATTRIB_COLOR1
= 4,
152 VERT_ATTRIB_COLOR_INDEX
= 6,
153 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
154 VERT_ATTRIB_EDGEFLAG
= 7,
155 VERT_ATTRIB_TEX0
= 8,
156 VERT_ATTRIB_TEX1
= 9,
157 VERT_ATTRIB_TEX2
= 10,
158 VERT_ATTRIB_TEX3
= 11,
159 VERT_ATTRIB_TEX4
= 12,
160 VERT_ATTRIB_TEX5
= 13,
161 VERT_ATTRIB_TEX6
= 14,
162 VERT_ATTRIB_TEX7
= 15,
163 VERT_ATTRIB_GENERIC0
= 16,
164 VERT_ATTRIB_GENERIC1
= 17,
165 VERT_ATTRIB_GENERIC2
= 18,
166 VERT_ATTRIB_GENERIC3
= 19,
167 VERT_ATTRIB_GENERIC4
= 20,
168 VERT_ATTRIB_GENERIC5
= 21,
169 VERT_ATTRIB_GENERIC6
= 22,
170 VERT_ATTRIB_GENERIC7
= 23,
171 VERT_ATTRIB_GENERIC8
= 24,
172 VERT_ATTRIB_GENERIC9
= 25,
173 VERT_ATTRIB_GENERIC10
= 26,
174 VERT_ATTRIB_GENERIC11
= 27,
175 VERT_ATTRIB_GENERIC12
= 28,
176 VERT_ATTRIB_GENERIC13
= 29,
177 VERT_ATTRIB_GENERIC14
= 30,
178 VERT_ATTRIB_GENERIC15
= 31,
183 * Bitflags for vertex attributes.
184 * These are used in bitfields in many places.
187 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
188 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
189 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
190 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
191 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
192 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
193 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
194 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
195 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
196 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
197 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
198 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
199 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
200 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
201 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
202 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
203 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
204 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
205 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
206 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
207 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
208 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
209 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
210 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
211 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
212 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
213 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
214 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
215 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
216 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
217 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
218 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
220 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
221 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
226 * Indexes for vertex program result attributes
229 #define VERT_RESULT_HPOS 0
230 #define VERT_RESULT_COL0 1
231 #define VERT_RESULT_COL1 2
232 #define VERT_RESULT_FOGC 3
233 #define VERT_RESULT_TEX0 4
234 #define VERT_RESULT_TEX1 5
235 #define VERT_RESULT_TEX2 6
236 #define VERT_RESULT_TEX3 7
237 #define VERT_RESULT_TEX4 8
238 #define VERT_RESULT_TEX5 9
239 #define VERT_RESULT_TEX6 10
240 #define VERT_RESULT_TEX7 11
241 #define VERT_RESULT_PSIZ 12
242 #define VERT_RESULT_BFC0 13
243 #define VERT_RESULT_BFC1 14
244 #define VERT_RESULT_EDGE 15
245 #define VERT_RESULT_VAR0 16 /**< shader varying */
246 #define VERT_RESULT_MAX (VERT_RESULT_VAR0 + MAX_VARYING)
251 * Indexes for fragment program input attributes.
255 FRAG_ATTRIB_WPOS
= 0,
256 FRAG_ATTRIB_COL0
= 1,
257 FRAG_ATTRIB_COL1
= 2,
258 FRAG_ATTRIB_FOGC
= 3,
259 FRAG_ATTRIB_TEX0
= 4,
260 FRAG_ATTRIB_TEX1
= 5,
261 FRAG_ATTRIB_TEX2
= 6,
262 FRAG_ATTRIB_TEX3
= 7,
263 FRAG_ATTRIB_TEX4
= 8,
264 FRAG_ATTRIB_TEX5
= 9,
265 FRAG_ATTRIB_TEX6
= 10,
266 FRAG_ATTRIB_TEX7
= 11,
267 FRAG_ATTRIB_VAR0
= 12, /**< shader varying */
268 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
272 * Bitflags for fragment program input attributes.
275 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
276 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
277 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
278 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
279 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
280 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
281 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
282 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
283 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
284 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
285 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
286 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
287 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
289 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
290 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
292 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
304 * Fragment program results
308 FRAG_RESULT_COLR
= 0,
309 FRAG_RESULT_COLH
= 1,
310 FRAG_RESULT_DEPR
= 2,
311 FRAG_RESULT_DATA0
= 3,
312 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
317 * Indexes for all renderbuffers
320 BUFFER_FRONT_LEFT
= 0, /* the four standard color buffers */
321 BUFFER_BACK_LEFT
= 1,
322 BUFFER_FRONT_RIGHT
= 2,
323 BUFFER_BACK_RIGHT
= 3,
324 BUFFER_AUX0
= 4, /* optional aux buffer */
331 BUFFER_COLOR0
= 11, /* generic renderbuffers */
343 * Bit flags for all renderbuffers
345 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
346 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
347 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
348 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
349 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
350 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
351 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
352 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
353 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
354 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
355 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
356 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
357 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
358 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
359 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
360 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
361 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
362 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
363 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
366 * Mask of all the color buffer bits (but not accum).
368 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
369 BUFFER_BIT_BACK_LEFT | \
370 BUFFER_BIT_FRONT_RIGHT | \
371 BUFFER_BIT_BACK_RIGHT | \
376 BUFFER_BIT_COLOR0 | \
377 BUFFER_BIT_COLOR1 | \
378 BUFFER_BIT_COLOR2 | \
379 BUFFER_BIT_COLOR3 | \
380 BUFFER_BIT_COLOR4 | \
381 BUFFER_BIT_COLOR5 | \
382 BUFFER_BIT_COLOR6 | \
386 /** The pixel transfer path has three color tables: */
388 #define COLORTABLE_PRECONVOLUTION 0
389 #define COLORTABLE_POSTCONVOLUTION 1
390 #define COLORTABLE_POSTCOLORMATRIX 2
391 #define COLORTABLE_MAX 3
396 * Data structure for color tables
398 struct gl_color_table
400 GLenum InternalFormat
; /**< The user-specified format */
401 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
402 GLuint Size
; /**< number of entries in table */
403 GLfloat
*TableF
; /**< Color table, floating point values */
404 GLubyte
*TableUB
; /**< Color table, ubyte values */
409 GLubyte LuminanceSize
;
410 GLubyte IntensitySize
;
415 * \name Bit flags used for updating material values.
418 #define MAT_ATTRIB_FRONT_AMBIENT 0
419 #define MAT_ATTRIB_BACK_AMBIENT 1
420 #define MAT_ATTRIB_FRONT_DIFFUSE 2
421 #define MAT_ATTRIB_BACK_DIFFUSE 3
422 #define MAT_ATTRIB_FRONT_SPECULAR 4
423 #define MAT_ATTRIB_BACK_SPECULAR 5
424 #define MAT_ATTRIB_FRONT_EMISSION 6
425 #define MAT_ATTRIB_BACK_EMISSION 7
426 #define MAT_ATTRIB_FRONT_SHININESS 8
427 #define MAT_ATTRIB_BACK_SHININESS 9
428 #define MAT_ATTRIB_FRONT_INDEXES 10
429 #define MAT_ATTRIB_BACK_INDEXES 11
430 #define MAT_ATTRIB_MAX 12
432 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
433 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
434 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
435 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
436 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
437 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
439 #define MAT_INDEX_AMBIENT 0
440 #define MAT_INDEX_DIFFUSE 1
441 #define MAT_INDEX_SPECULAR 2
443 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
444 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
445 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
446 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
447 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
448 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
449 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
450 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
451 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
452 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
453 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
454 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
457 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
458 MAT_BIT_FRONT_AMBIENT | \
459 MAT_BIT_FRONT_DIFFUSE | \
460 MAT_BIT_FRONT_SPECULAR | \
461 MAT_BIT_FRONT_SHININESS | \
462 MAT_BIT_FRONT_INDEXES)
464 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
465 MAT_BIT_BACK_AMBIENT | \
466 MAT_BIT_BACK_DIFFUSE | \
467 MAT_BIT_BACK_SPECULAR | \
468 MAT_BIT_BACK_SHININESS | \
469 MAT_BIT_BACK_INDEXES)
471 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
475 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
476 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
479 * Material shininess lookup table.
483 struct gl_shine_tab
*next
, *prev
;
484 GLfloat tab
[SHINE_TABLE_SIZE
+1];
491 * Light source state.
495 struct gl_light
*next
; /**< double linked list with sentinel */
496 struct gl_light
*prev
;
498 GLfloat Ambient
[4]; /**< ambient color */
499 GLfloat Diffuse
[4]; /**< diffuse color */
500 GLfloat Specular
[4]; /**< specular color */
501 GLfloat EyePosition
[4]; /**< position in eye coordinates */
502 GLfloat EyeDirection
[4]; /**< spotlight dir in eye coordinates */
503 GLfloat SpotExponent
;
504 GLfloat SpotCutoff
; /**< in degrees */
505 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
506 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
507 GLfloat ConstantAttenuation
;
508 GLfloat LinearAttenuation
;
509 GLfloat QuadraticAttenuation
;
510 GLboolean Enabled
; /**< On/off flag */
513 * \name Derived fields
516 GLbitfield _Flags
; /**< State */
518 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
519 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
520 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
521 GLfloat _NormDirection
[4]; /**< normalized spotlight direction */
522 GLfloat _VP_inf_spot_attenuation
;
524 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
525 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
526 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
527 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
528 GLfloat _dli
; /**< CI diffuse light intensity */
529 GLfloat _sli
; /**< CI specular light intensity */
539 GLfloat Ambient
[4]; /**< ambient color */
540 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
541 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
542 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
543 * or GL_SEPARATE_SPECULAR_COLOR */
552 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
557 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
559 struct gl_accum_attrib
561 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
566 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
568 struct gl_colorbuffer_attrib
570 GLuint ClearIndex
; /**< Index to use for glClear */
571 GLclampf ClearColor
[4]; /**< Color to use for glClear */
573 GLuint IndexMask
; /**< Color index write mask */
574 GLubyte ColorMask
[4]; /**< Each flag is 0xff or 0x0 */
576 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
579 * \name alpha testing
582 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
583 GLenum AlphaFunc
; /**< Alpha test function */
584 GLclampf AlphaRef
; /**< Alpha reference value */
591 GLboolean BlendEnabled
; /**< Blending enabled flag */
592 GLenum BlendSrcRGB
; /**< Blending source operator */
593 GLenum BlendDstRGB
; /**< Blending destination operator */
594 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
595 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
596 GLenum BlendEquationRGB
; /**< Blending equation */
597 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
598 GLfloat BlendColor
[4]; /**< Blending color */
605 GLenum LogicOp
; /**< Logic operator */
606 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
607 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
608 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
611 GLboolean DitherFlag
; /**< Dither enable flag */
613 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
614 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
619 * Current attribute group (GL_CURRENT_BIT).
621 struct gl_current_attrib
624 * \name Current vertex attributes.
625 * \note Values are valid only after FLUSH_VERTICES has been called.
626 * \note Index and Edgeflag current values are stored as floats in the
627 * SIX and SEVEN attribute slots.
630 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
634 * \name Current raster position attributes (always valid).
635 * \note This set of attributes is very similar to the SWvertex struct.
638 GLfloat RasterPos
[4];
639 GLfloat RasterDistance
;
640 GLfloat RasterColor
[4];
641 GLfloat RasterSecondaryColor
[4];
643 GLfloat RasterTexCoords
[MAX_TEXTURE_UNITS
][4];
644 GLboolean RasterPosValid
;
650 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
652 struct gl_depthbuffer_attrib
654 GLenum Func
; /**< Function for depth buffer compare */
655 GLclampd Clear
; /**< Value to clear depth buffer to */
656 GLboolean Test
; /**< Depth buffering enabled flag */
657 GLboolean Mask
; /**< Depth buffer writable? */
658 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
659 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
664 * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
666 struct gl_enable_attrib
669 GLboolean AutoNormal
;
671 GLbitfield ClipPlanes
;
672 GLboolean ColorMaterial
;
673 GLboolean ColorTable
[COLORTABLE_MAX
];
674 GLboolean Convolution1D
;
675 GLboolean Convolution2D
;
676 GLboolean Separable2D
;
682 GLboolean Light
[MAX_LIGHTS
];
684 GLboolean LineSmooth
;
685 GLboolean LineStipple
;
686 GLboolean IndexLogicOp
;
687 GLboolean ColorLogicOp
;
688 GLboolean Map1Color4
;
690 GLboolean Map1Normal
;
691 GLboolean Map1TextureCoord1
;
692 GLboolean Map1TextureCoord2
;
693 GLboolean Map1TextureCoord3
;
694 GLboolean Map1TextureCoord4
;
695 GLboolean Map1Vertex3
;
696 GLboolean Map1Vertex4
;
697 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
698 GLboolean Map2Color4
;
700 GLboolean Map2Normal
;
701 GLboolean Map2TextureCoord1
;
702 GLboolean Map2TextureCoord2
;
703 GLboolean Map2TextureCoord3
;
704 GLboolean Map2TextureCoord4
;
705 GLboolean Map2Vertex3
;
706 GLboolean Map2Vertex4
;
707 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
710 GLboolean PixelTexture
;
711 GLboolean PointSmooth
;
712 GLboolean PolygonOffsetPoint
;
713 GLboolean PolygonOffsetLine
;
714 GLboolean PolygonOffsetFill
;
715 GLboolean PolygonSmooth
;
716 GLboolean PolygonStipple
;
717 GLboolean RescaleNormals
;
720 GLboolean StencilTwoSide
; /* GL_EXT_stencil_two_side */
721 GLboolean MultisampleEnabled
; /* GL_ARB_multisample */
722 GLboolean SampleAlphaToCoverage
; /* GL_ARB_multisample */
723 GLboolean SampleAlphaToOne
; /* GL_ARB_multisample */
724 GLboolean SampleCoverage
; /* GL_ARB_multisample */
725 GLboolean SampleCoverageInvert
; /* GL_ARB_multisample */
726 GLboolean RasterPositionUnclipped
; /* GL_IBM_rasterpos_clip */
727 GLuint Texture
[MAX_TEXTURE_UNITS
];
728 GLuint TexGen
[MAX_TEXTURE_UNITS
];
729 /* SGI_texture_color_table */
730 GLboolean TextureColorTable
[MAX_TEXTURE_UNITS
];
731 /* GL_ARB_vertex_program / GL_NV_vertex_program */
732 GLboolean VertexProgram
;
733 GLboolean VertexProgramPointSize
;
734 GLboolean VertexProgramTwoSide
;
735 /* GL_ARB_point_sprite / GL_NV_point_sprite */
736 GLboolean PointSprite
;
737 GLboolean FragmentShaderATI
;
742 * Evaluator attribute group (GL_EVAL_BIT).
744 struct gl_eval_attrib
750 GLboolean Map1Color4
;
752 GLboolean Map1Normal
;
753 GLboolean Map1TextureCoord1
;
754 GLboolean Map1TextureCoord2
;
755 GLboolean Map1TextureCoord3
;
756 GLboolean Map1TextureCoord4
;
757 GLboolean Map1Vertex3
;
758 GLboolean Map1Vertex4
;
759 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
760 GLboolean Map2Color4
;
762 GLboolean Map2Normal
;
763 GLboolean Map2TextureCoord1
;
764 GLboolean Map2TextureCoord2
;
765 GLboolean Map2TextureCoord3
;
766 GLboolean Map2TextureCoord4
;
767 GLboolean Map2Vertex3
;
768 GLboolean Map2Vertex4
;
769 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
770 GLboolean AutoNormal
;
774 * \name Map Grid endpoints and divisions and calculated du values
778 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
779 GLint MapGrid2un
, MapGrid2vn
;
780 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
781 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
787 * Fog attribute group (GL_FOG_BIT).
791 GLboolean Enabled
; /**< Fog enabled flag */
792 GLfloat Color
[4]; /**< Fog color */
793 GLfloat Density
; /**< Density >= 0.0 */
794 GLfloat Start
; /**< Start distance in eye coords */
795 GLfloat End
; /**< End distance in eye coords */
796 GLfloat Index
; /**< Fog index */
797 GLenum Mode
; /**< Fog mode */
798 GLboolean ColorSumEnabled
;
799 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
800 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
805 * Hint attribute group (GL_HINT_BIT).
807 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
809 struct gl_hint_attrib
811 GLenum PerspectiveCorrection
;
814 GLenum PolygonSmooth
;
816 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
817 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
818 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
819 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
824 * Histogram attributes.
826 struct gl_histogram_attrib
828 GLuint Width
; /**< number of table entries */
829 GLint Format
; /**< GL_ALPHA, GL_RGB, etc */
830 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /**< the histogram */
831 GLboolean Sink
; /**< terminate image transfer? */
832 GLubyte RedSize
; /**< Bits per counter */
836 GLubyte LuminanceSize
;
841 * Color Min/max state.
843 struct gl_minmax_attrib
847 GLfloat Min
[4], Max
[4]; /**< RGBA */
852 * Image convolution state.
854 struct gl_convolution_attrib
857 GLenum InternalFormat
;
860 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
868 #define LIGHT_SPOT 0x1
869 #define LIGHT_LOCAL_VIEWER 0x2
870 #define LIGHT_POSITIONAL 0x4
871 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
876 * Lighting attribute group (GL_LIGHT_BIT).
878 struct gl_light_attrib
880 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
881 struct gl_lightmodel Model
; /**< Lighting model */
884 * Must flush FLUSH_VERTICES before referencing:
887 struct gl_material Material
; /**< Includes front & back values */
890 GLboolean Enabled
; /**< Lighting enabled flag */
891 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
892 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
893 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
894 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
895 GLboolean ColorMaterialEnabled
;
896 GLenum ClampVertexColor
;
898 struct gl_light EnabledList
; /**< List sentinel */
901 * Derived state for optimizations:
904 GLboolean _NeedEyeCoords
;
905 GLboolean _NeedVertices
; /**< Use fast shader? */
906 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
907 GLfloat _BaseColor
[2][3];
913 * Line attribute group (GL_LINE_BIT).
915 struct gl_line_attrib
917 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
918 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
919 GLushort StipplePattern
; /**< Stipple pattern */
920 GLint StippleFactor
; /**< Stipple repeat factor */
921 GLfloat Width
; /**< Line width */
926 * Display list attribute group (GL_LIST_BIT).
928 struct gl_list_attrib
935 * Used by device drivers to hook new commands into display lists.
937 struct gl_list_instruction
940 void (*Execute
)( GLcontext
*ctx
, void *data
);
941 void (*Destroy
)( GLcontext
*ctx
, void *data
);
942 void (*Print
)( GLcontext
*ctx
, void *data
);
945 #define MAX_DLIST_EXT_OPCODES 16
948 * Used by device drivers to hook new commands into display lists.
950 struct gl_list_extensions
952 struct gl_list_instruction Opcode
[MAX_DLIST_EXT_OPCODES
];
958 * Multisample attribute group (GL_MULTISAMPLE_BIT).
960 struct gl_multisample_attrib
963 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
964 GLboolean SampleAlphaToCoverage
;
965 GLboolean SampleAlphaToOne
;
966 GLboolean SampleCoverage
;
967 GLfloat SampleCoverageValue
;
968 GLboolean SampleCoverageInvert
;
973 * A pixelmap (see glPixelMap)
978 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
979 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
984 * Collection of all pixelmaps
988 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
989 struct gl_pixelmap GtoG
;
990 struct gl_pixelmap BtoB
;
991 struct gl_pixelmap AtoA
;
992 struct gl_pixelmap ItoR
;
993 struct gl_pixelmap ItoG
;
994 struct gl_pixelmap ItoB
;
995 struct gl_pixelmap ItoA
;
996 struct gl_pixelmap ItoI
;
997 struct gl_pixelmap StoS
;
1002 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1004 struct gl_pixel_attrib
1006 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1008 /*--- Begin Pixel Transfer State ---*/
1009 /* Fields are in the order in which they're applied... */
1011 /* Scale & Bias (index shift, offset) */
1012 GLfloat RedBias
, RedScale
;
1013 GLfloat GreenBias
, GreenScale
;
1014 GLfloat BlueBias
, BlueScale
;
1015 GLfloat AlphaBias
, AlphaScale
;
1016 GLfloat DepthBias
, DepthScale
;
1017 GLint IndexShift
, IndexOffset
;
1020 /* Note: actual pixel maps are not part of this attrib group */
1021 GLboolean MapColorFlag
;
1022 GLboolean MapStencilFlag
;
1024 /* There are multiple color table stages: */
1025 GLboolean ColorTableEnabled
[COLORTABLE_MAX
];
1026 GLfloat ColorTableScale
[COLORTABLE_MAX
][4]; /**< RGBA */
1027 GLfloat ColorTableBias
[COLORTABLE_MAX
][4]; /**< RGBA */
1029 /* Convolution (GL_EXT_convolution) */
1030 GLboolean Convolution1DEnabled
;
1031 GLboolean Convolution2DEnabled
;
1032 GLboolean Separable2DEnabled
;
1033 GLfloat ConvolutionBorderColor
[3][4];
1034 GLenum ConvolutionBorderMode
[3];
1035 GLfloat ConvolutionFilterScale
[3][4]; /**< RGBA */
1036 GLfloat ConvolutionFilterBias
[3][4]; /**< RGBA */
1037 GLfloat PostConvolutionScale
[4]; /**< RGBA */
1038 GLfloat PostConvolutionBias
[4]; /**< RGBA */
1040 /* Color matrix (GL_SGI_color_matrix) */
1041 /* Note: the color matrix is not part of this attrib group */
1042 GLfloat PostColorMatrixScale
[4]; /**< RGBA */
1043 GLfloat PostColorMatrixBias
[4]; /**< RGBA */
1045 /* Histogram & minmax (GL_EXT_histogram) */
1046 /* Note: histogram and minmax data are not part of this attrib group */
1047 GLboolean HistogramEnabled
;
1048 GLboolean MinMaxEnabled
;
1050 /*--- End Pixel Transfer State ---*/
1053 GLfloat ZoomX
, ZoomY
;
1055 /** GL_SGI_texture_color_table */
1056 GLfloat TextureColorTableScale
[4];
1057 GLfloat TextureColorTableBias
[4];
1062 * Point attribute group (GL_POINT_BIT).
1064 struct gl_point_attrib
1066 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1067 GLfloat Size
; /**< User-specified point size */
1068 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1069 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1070 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1071 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1072 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1073 GLboolean CoordReplace
[MAX_TEXTURE_UNITS
]; /**< GL_ARB_point_sprite */
1074 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1075 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1080 * Polygon attribute group (GL_POLYGON_BIT).
1082 struct gl_polygon_attrib
1084 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1085 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1086 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1087 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1088 GLboolean CullFlag
; /**< Culling on/off flag */
1089 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1090 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1091 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1092 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1093 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1094 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1095 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1096 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1101 * Scissor attributes (GL_SCISSOR_BIT).
1103 struct gl_scissor_attrib
1105 GLboolean Enabled
; /**< Scissor test enabled? */
1106 GLint X
, Y
; /**< Lower left corner of box */
1107 GLsizei Width
, Height
; /**< Size of box */
1112 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1114 * Three sets of stencil data are tracked so that OpenGL 2.0,
1115 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1116 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1117 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1118 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1119 * GL_EXT_stencil_two_side GL_BACK state.
1121 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1122 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1124 * The derived value \c _TestTwoSide is set when the front-face and back-face
1125 * stencil state are different.
1127 struct gl_stencil_attrib
1129 GLboolean Enabled
; /**< Enabled flag */
1130 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1131 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1132 GLboolean _TestTwoSide
;
1134 GLenum Function
[3]; /**< Stencil function */
1135 GLenum FailFunc
[3]; /**< Fail function */
1136 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1137 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1138 GLint Ref
[3]; /**< Reference value */
1139 GLuint ValueMask
[3]; /**< Value mask */
1140 GLuint WriteMask
[3]; /**< Write mask */
1141 GLuint Clear
; /**< Clear value */
1145 /** 1D, 2D, 3D, CUBE, RECT, 1D_ARRAY, and 2D_ARRAY targets */
1146 #define NUM_TEXTURE_TARGETS 7
1149 * An index for each type of texture object
1152 #define TEXTURE_1D_INDEX 0
1153 #define TEXTURE_2D_INDEX 1
1154 #define TEXTURE_3D_INDEX 2
1155 #define TEXTURE_CUBE_INDEX 3
1156 #define TEXTURE_RECT_INDEX 4
1157 #define TEXTURE_1D_ARRAY_INDEX 5
1158 #define TEXTURE_2D_ARRAY_INDEX 6
1162 * Bit flags for each type of texture object
1163 * Used for Texture.Unit[]._ReallyEnabled flags.
1166 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1167 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1168 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1169 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1170 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1171 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1172 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1177 * TexGenEnabled flags.
1188 * Bit flag versions of the corresponding GL_ constants.
1191 #define TEXGEN_SPHERE_MAP 0x1
1192 #define TEXGEN_OBJ_LINEAR 0x2
1193 #define TEXGEN_EYE_LINEAR 0x4
1194 #define TEXGEN_REFLECTION_MAP_NV 0x8
1195 #define TEXGEN_NORMAL_MAP_NV 0x10
1197 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1198 TEXGEN_REFLECTION_MAP_NV | \
1199 TEXGEN_NORMAL_MAP_NV)
1200 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1201 TEXGEN_REFLECTION_MAP_NV | \
1202 TEXGEN_NORMAL_MAP_NV | \
1207 /* A selection of state flags to make driver and module's lives easier. */
1208 #define ENABLE_TEXGEN0 0x1
1209 #define ENABLE_TEXGEN1 0x2
1210 #define ENABLE_TEXGEN2 0x4
1211 #define ENABLE_TEXGEN3 0x8
1212 #define ENABLE_TEXGEN4 0x10
1213 #define ENABLE_TEXGEN5 0x20
1214 #define ENABLE_TEXGEN6 0x40
1215 #define ENABLE_TEXGEN7 0x80
1217 #define ENABLE_TEXMAT0 0x1 /* Ie. not the identity matrix */
1218 #define ENABLE_TEXMAT1 0x2
1219 #define ENABLE_TEXMAT2 0x4
1220 #define ENABLE_TEXMAT3 0x8
1221 #define ENABLE_TEXMAT4 0x10
1222 #define ENABLE_TEXMAT5 0x20
1223 #define ENABLE_TEXMAT6 0x40
1224 #define ENABLE_TEXMAT7 0x80
1226 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
1227 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
1231 * Texel fetch function prototype. We use texel fetch functions to
1232 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1233 * texture images. These functions help to isolate us from the gritty
1234 * details of all the various texture image encodings.
1236 * \param texImage texture image.
1237 * \param col texel column.
1238 * \param row texel row.
1239 * \param img texel image level/layer.
1240 * \param texelOut output texel (up to 4 GLchans)
1242 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1243 GLint col
, GLint row
, GLint img
,
1247 * As above, but returns floats.
1248 * Used for depth component images and for upcoming signed/float
1251 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1252 GLint col
, GLint row
, GLint img
,
1253 GLfloat
*texelOut
);
1256 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1257 GLint col
, GLint row
, GLint img
,
1262 * This macro defines the (many) parameters to the texstore functions.
1263 * \param dims either 1 or 2 or 3
1264 * \param baseInternalFormat user-specified base internal format
1265 * \param dstFormat destination Mesa texture format
1266 * \param dstAddr destination image address
1267 * \param dstX/Y/Zoffset destination x/y/z offset (ala TexSubImage), in texels
1268 * \param dstRowStride destination image row stride, in bytes
1269 * \param dstImageOffsets offset of each 2D slice within 3D texture, in texels
1270 * \param srcWidth/Height/Depth source image size, in pixels
1271 * \param srcFormat incoming image format
1272 * \param srcType incoming image data type
1273 * \param srcAddr source image address
1274 * \param srcPacking source image packing parameters
1276 #define TEXSTORE_PARAMS \
1277 GLcontext *ctx, GLuint dims, \
1278 GLenum baseInternalFormat, \
1279 const struct gl_texture_format *dstFormat, \
1281 GLint dstXoffset, GLint dstYoffset, GLint dstZoffset, \
1282 GLint dstRowStride, const GLuint *dstImageOffsets, \
1283 GLint srcWidth, GLint srcHeight, GLint srcDepth, \
1284 GLenum srcFormat, GLenum srcType, \
1285 const GLvoid *srcAddr, \
1286 const struct gl_pixelstore_attrib *srcPacking
1291 * Texture image storage function.
1293 typedef GLboolean (*StoreTexImageFunc
)(TEXSTORE_PARAMS
);
1297 * Texture format record
1299 struct gl_texture_format
1301 GLint MesaFormat
; /**< One of the MESA_FORMAT_* values */
1303 GLenum BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1304 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1305 * GL_INTENSITY, GL_COLOR_INDEX or
1306 * GL_DEPTH_COMPONENT.
1308 GLenum DataType
; /**< GL_FLOAT or GL_UNSIGNED_NORMALIZED_ARB */
1311 * Bits per texel component. These are just rough approximations
1312 * for compressed texture formats.
1319 GLubyte LuminanceBits
;
1320 GLubyte IntensityBits
;
1323 GLubyte StencilBits
; /**< GL_EXT_packed_depth_stencil */
1326 GLuint TexelBytes
; /**< Bytes per texel, 0 if compressed format */
1328 StoreTexImageFunc StoreImage
;
1331 * \name Texel fetch function pointers
1334 FetchTexelFuncC FetchTexel1D
;
1335 FetchTexelFuncC FetchTexel2D
;
1336 FetchTexelFuncC FetchTexel3D
;
1337 FetchTexelFuncF FetchTexel1Df
;
1338 FetchTexelFuncF FetchTexel2Df
;
1339 FetchTexelFuncF FetchTexel3Df
;
1342 StoreTexelFunc StoreTexel
;
1347 * Texture image state. Describes the dimensions of a texture image,
1348 * the texel format and pointers to Texel Fetch functions.
1350 struct gl_texture_image
1352 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1353 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1354 * GL_INTENSITY, GL_COLOR_INDEX,
1355 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1356 * only. Used for choosing TexEnv arithmetic.
1358 GLint InternalFormat
; /**< Internal format as given by the user */
1359 GLuint Border
; /**< 0 or 1 */
1360 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1361 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1362 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1363 GLuint Width2
; /**< = Width - 2*Border */
1364 GLuint Height2
; /**< = Height - 2*Border */
1365 GLuint Depth2
; /**< = Depth - 2*Border */
1366 GLuint WidthLog2
; /**< = log2(Width2) */
1367 GLuint HeightLog2
; /**< = log2(Height2) */
1368 GLuint DepthLog2
; /**< = log2(Depth2) */
1369 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1370 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1371 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1372 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1373 GLboolean IsClientData
; /**< Data owned by client? */
1374 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1376 const struct gl_texture_format
*TexFormat
;
1378 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1380 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1381 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1383 GLboolean IsCompressed
; /**< GL_ARB_texture_compression */
1384 GLuint CompressedSize
; /**< GL_ARB_texture_compression */
1386 GLuint RowStride
; /**< Padded width in units of texels */
1387 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1388 each 2D slice in 'Data', in texels */
1389 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1392 * \name For device driver:
1395 void *DriverData
; /**< Arbitrary device driver data */
1401 * Indexes for cube map faces.
1404 #define FACE_POS_X 0
1405 #define FACE_NEG_X 1
1406 #define FACE_POS_Y 2
1407 #define FACE_NEG_Y 3
1408 #define FACE_POS_Z 4
1409 #define FACE_NEG_Z 5
1415 * Texture object state. Contains the array of mipmap images, border color,
1416 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1419 struct gl_texture_object
1421 _glthread_Mutex Mutex
; /**< for thread safety */
1422 GLint RefCount
; /**< reference count */
1423 GLuint Name
; /**< the user-visible texture object ID */
1424 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1425 GLfloat Priority
; /**< in [0,1] */
1426 GLfloat BorderColor
[4]; /**< unclamped */
1427 GLchan _BorderChan
[4]; /**< clamped, as GLchan */
1428 GLenum WrapS
; /**< S-axis texture image wrap mode */
1429 GLenum WrapT
; /**< T-axis texture image wrap mode */
1430 GLenum WrapR
; /**< R-axis texture image wrap mode */
1431 GLenum MinFilter
; /**< minification filter */
1432 GLenum MagFilter
; /**< magnification filter */
1433 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1434 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1435 GLfloat LodBias
; /**< OpenGL 1.4 */
1436 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1437 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1438 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1439 GLenum CompareMode
; /**< GL_ARB_shadow */
1440 GLenum CompareFunc
; /**< GL_ARB_shadow */
1441 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1442 GLenum _Function
; /**< Comparison function derived from
1443 * \c CompareOperator, \c CompareMode, and
1446 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1447 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1448 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1449 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1450 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1451 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1452 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1453 GLboolean _Complete
; /**< Is texture object complete? */
1454 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1456 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1457 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1459 /** GL_EXT_paletted_texture */
1460 struct gl_color_table Palette
;
1463 * \name For device driver.
1464 * Note: instead of attaching driver data to this pointer, it's preferable
1465 * to instead use this struct as a base class for your own texture object
1466 * class. Driver->NewTextureObject() can be used to implement the
1469 void *DriverData
; /**< Arbitrary device driver data */
1474 * Texture combine environment state.
1475 * Up to four combiner sources are possible with GL_NV_texture_env_combine4.
1477 struct gl_tex_env_combine_state
1479 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1480 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1481 GLenum SourceRGB
[4]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1482 GLenum SourceA
[4]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1483 GLenum OperandRGB
[4]; /**< SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
1484 GLenum OperandA
[4]; /**< SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
1485 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1486 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1487 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1488 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1493 * Texture unit state. Contains enable flags, texture environment/function/
1494 * combiners, texgen state, pointers to current texture objects and
1495 * post-filter color tables.
1497 struct gl_texture_unit
1499 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1500 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1502 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1503 GLfloat EnvColor
[4];
1504 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1505 /** \name Tex coord generation mode
1506 * Either GL_OBJECT_LINEAR, GL_EYE_LINEAR or GL_SPHERE_MAP. */
1513 GLbitfield _GenBitS
;
1514 GLbitfield _GenBitT
;
1515 GLbitfield _GenBitR
;
1516 GLbitfield _GenBitQ
;
1517 GLbitfield _GenFlags
; /**< bitwise or of _GenBit[STRQ] */
1518 GLfloat ObjectPlaneS
[4];
1519 GLfloat ObjectPlaneT
[4];
1520 GLfloat ObjectPlaneR
[4];
1521 GLfloat ObjectPlaneQ
[4];
1522 GLfloat EyePlaneS
[4];
1523 GLfloat EyePlaneT
[4];
1524 GLfloat EyePlaneR
[4];
1525 GLfloat EyePlaneQ
[4];
1526 GLfloat LodBias
; /**< for biasing mipmap levels */
1529 * \name GL_EXT_texture_env_combine
1531 struct gl_tex_env_combine_state Combine
;
1534 * Derived state based on \c EnvMode and the \c BaseFormat of the
1535 * currently enabled texture.
1537 struct gl_tex_env_combine_state _EnvMode
;
1540 * Currently enabled combiner state. This will point to either
1541 * \c Combine or \c _EnvMode.
1543 struct gl_tex_env_combine_state
*_CurrentCombine
;
1545 struct gl_texture_object
*Current1D
;
1546 struct gl_texture_object
*Current2D
;
1547 struct gl_texture_object
*Current3D
;
1548 struct gl_texture_object
*CurrentCubeMap
; /**< GL_ARB_texture_cube_map */
1549 struct gl_texture_object
*CurrentRect
; /**< GL_NV_texture_rectangle */
1550 struct gl_texture_object
*Current1DArray
; /**< GL_MESA_texture_array */
1551 struct gl_texture_object
*Current2DArray
; /**< GL_MESA_texture_array */
1553 struct gl_texture_object
*_Current
; /**< Points to really enabled tex obj */
1555 /** GL_SGI_texture_color_table */
1557 struct gl_color_table ColorTable
;
1558 struct gl_color_table ProxyColorTable
;
1559 GLboolean ColorTableEnabled
;
1566 * Texture attribute group (GL_TEXTURE_BIT).
1568 struct gl_texture_attrib
1574 GLuint CurrentUnit
; /**< Active texture unit [0, MaxTextureImageUnits-1] */
1575 GLbitfield _EnabledUnits
; /**< one bit set for each really-enabled unit */
1576 GLbitfield _EnabledCoordUnits
; /**< one bit per enabled coordinate unit */
1577 GLbitfield _GenFlags
; /**< for texgen */
1578 GLbitfield _TexGenEnabled
;
1579 GLbitfield _TexMatEnabled
;
1582 struct gl_texture_unit Unit
[MAX_TEXTURE_UNITS
];
1584 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1586 /** GL_EXT_shared_texture_palette */
1587 GLboolean SharedPalette
;
1588 struct gl_color_table Palette
;
1593 * Transformation attribute group (GL_TRANSFORM_BIT).
1595 struct gl_transform_attrib
1597 GLenum MatrixMode
; /**< Matrix mode */
1598 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1599 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1600 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1601 GLboolean Normalize
; /**< Normalize all normals? */
1602 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1603 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1605 GLboolean CullVertexFlag
; /**< True if GL_CULL_VERTEX_EXT is enabled */
1606 GLfloat CullEyePos
[4];
1607 GLfloat CullObjPos
[4];
1612 * Viewport attribute group (GL_VIEWPORT_BIT).
1614 struct gl_viewport_attrib
1616 GLint X
, Y
; /**< position */
1617 GLsizei Width
, Height
; /**< size */
1618 GLfloat Near
, Far
; /**< Depth buffer range */
1619 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1624 * Node for the attribute stack.
1626 struct gl_attrib_node
1630 struct gl_attrib_node
*next
;
1635 * GL_ARB_vertex/pixel_buffer_object buffer object
1637 struct gl_buffer_object
1643 GLvoid
*Pointer
; /**< Only valid while buffer is mapped */
1644 GLsizeiptrARB Size
; /**< Size of storage in bytes */
1645 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1646 GLboolean OnCard
; /**< Is buffer in VRAM? (hardware drivers) */
1652 * Client pixel packing/unpacking attributes
1654 struct gl_pixelstore_attrib
1660 GLint ImageHeight
; /**< for GL_EXT_texture3D */
1661 GLint SkipImages
; /**< for GL_EXT_texture3D */
1662 GLboolean SwapBytes
;
1664 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1665 GLboolean Invert
; /**< GL_MESA_pack_invert */
1666 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1672 * Client vertex array attributes
1674 struct gl_client_array
1676 GLint Size
; /**< components per element (1,2,3,4) */
1677 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1678 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1679 GLsizei Stride
; /**< user-specified stride */
1680 GLsizei StrideB
; /**< actual stride in bytes */
1681 const GLubyte
*Ptr
; /**< Points to array data */
1682 GLboolean Enabled
; /**< Enabled flag is a boolean */
1683 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1685 /**< GL_ARB_vertex_buffer_object */
1686 struct gl_buffer_object
*BufferObj
;
1692 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1693 * extension, but a nice encapsulation in any case.
1695 struct gl_array_object
1697 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1700 /** Conventional vertex arrays */
1702 struct gl_client_array Vertex
;
1703 struct gl_client_array Normal
;
1704 struct gl_client_array Color
;
1705 struct gl_client_array SecondaryColor
;
1706 struct gl_client_array FogCoord
;
1707 struct gl_client_array Index
;
1708 struct gl_client_array EdgeFlag
;
1709 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1710 struct gl_client_array PointSize
;
1713 /** Generic arrays for vertex programs/shaders */
1714 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1716 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1717 GLbitfield _Enabled
;
1722 * Vertex array state
1724 struct gl_array_attrib
1726 struct gl_array_object
*ArrayObj
;
1727 struct gl_array_object
*DefaultArrayObj
;
1729 GLint ActiveTexture
; /**< Client Active Texture */
1730 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1731 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1733 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1735 #if FEATURE_ARB_vertex_buffer_object
1736 struct gl_buffer_object
*NullBufferObj
;
1737 struct gl_buffer_object
*ArrayBufferObj
;
1738 struct gl_buffer_object
*ElementArrayBufferObj
;
1740 GLuint _MaxElement
; /* Min of all enabled array's maxes */
1745 * Feedback buffer state
1750 GLbitfield _Mask
; /* FB_* bits */
1758 * Selection buffer state
1762 GLuint
*Buffer
; /**< selection buffer */
1763 GLuint BufferSize
; /**< size of the selection buffer */
1764 GLuint BufferCount
; /**< number of values in the selection buffer */
1765 GLuint Hits
; /**< number of records in the selection buffer */
1766 GLuint NameStackDepth
; /**< name stack depth */
1767 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1768 GLboolean HitFlag
; /**< hit flag */
1769 GLfloat HitMinZ
; /**< minimum hit depth */
1770 GLfloat HitMaxZ
; /**< maximum hit depth */
1775 * 1-D Evaluator control points
1779 GLuint Order
; /**< Number of control points */
1780 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1781 GLfloat
*Points
; /**< Points to contiguous control points */
1786 * 2-D Evaluator control points
1790 GLuint Uorder
; /**< Number of control points in U dimension */
1791 GLuint Vorder
; /**< Number of control points in V dimension */
1794 GLfloat
*Points
; /**< Points to contiguous control points */
1799 * All evaluator control point state
1801 struct gl_evaluators
1807 struct gl_1d_map Map1Vertex3
;
1808 struct gl_1d_map Map1Vertex4
;
1809 struct gl_1d_map Map1Index
;
1810 struct gl_1d_map Map1Color4
;
1811 struct gl_1d_map Map1Normal
;
1812 struct gl_1d_map Map1Texture1
;
1813 struct gl_1d_map Map1Texture2
;
1814 struct gl_1d_map Map1Texture3
;
1815 struct gl_1d_map Map1Texture4
;
1816 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1823 struct gl_2d_map Map2Vertex3
;
1824 struct gl_2d_map Map2Vertex4
;
1825 struct gl_2d_map Map2Index
;
1826 struct gl_2d_map Map2Color4
;
1827 struct gl_2d_map Map2Normal
;
1828 struct gl_2d_map Map2Texture1
;
1829 struct gl_2d_map Map2Texture2
;
1830 struct gl_2d_map Map2Texture3
;
1831 struct gl_2d_map Map2Texture4
;
1832 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1838 * Names of the various vertex/fragment program register files, etc.
1840 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1841 * All values should fit in a 4-bit field.
1843 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1844 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1845 * be "uniform" variables since they can only be set outside glBegin/End.
1846 * They're also all stored in the same Parameters array.
1850 PROGRAM_TEMPORARY
= 0, /**< machine->Temporary[] */
1851 PROGRAM_LOCAL_PARAM
= 1, /**< gl_program->LocalParams[] */
1852 PROGRAM_ENV_PARAM
= 2, /**< gl_program->Parameters[] */
1853 PROGRAM_STATE_VAR
= 3, /**< gl_program->Parameters[] */
1854 PROGRAM_INPUT
= 4, /**< machine->Inputs[] */
1855 PROGRAM_OUTPUT
= 5, /**< machine->Outputs[] */
1856 PROGRAM_NAMED_PARAM
= 6, /**< gl_program->Parameters[] */
1857 PROGRAM_CONSTANT
= 7, /**< gl_program->Parameters[] */
1858 PROGRAM_UNIFORM
= 8, /**< gl_program->Parameters[] */
1859 PROGRAM_VARYING
= 9, /**< machine->Inputs[]/Outputs[] */
1860 PROGRAM_WRITE_ONLY
= 10, /**< A dummy, write-only register */
1861 PROGRAM_ADDRESS
= 11, /**< machine->AddressReg */
1862 PROGRAM_SAMPLER
= 12, /**< for shader samplers, compile-time only */
1863 PROGRAM_UNDEFINED
= 13, /**< Invalid value */
1868 /** Vertex and fragment instructions */
1869 struct prog_instruction
;
1870 struct gl_program_parameter_list
;
1871 struct gl_uniform_list
;
1875 * Base class for any kind of program object
1880 GLubyte
*String
; /**< Null-terminated program text */
1882 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1883 GLenum Format
; /**< String encoding format */
1886 struct prog_instruction
*Instructions
;
1888 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1889 GLbitfield OutputsWritten
; /**< Bitmask of which output regs are written to */
1890 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1891 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1892 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1893 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1894 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1897 /** Named parameters, constants, etc. from program text */
1898 struct gl_program_parameter_list
*Parameters
;
1899 /** Numbered local parameters */
1900 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1902 /** Vertex/fragment shader varying vars */
1903 struct gl_program_parameter_list
*Varying
;
1904 /** Vertex program user-defined attributes */
1905 struct gl_program_parameter_list
*Attributes
;
1907 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1908 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1909 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1910 GLubyte SamplerTargets
[MAX_SAMPLERS
];
1912 /** Logical counts */
1914 GLuint NumInstructions
;
1915 GLuint NumTemporaries
;
1916 GLuint NumParameters
;
1917 GLuint NumAttributes
;
1918 GLuint NumAddressRegs
;
1919 GLuint NumAluInstructions
;
1920 GLuint NumTexInstructions
;
1921 GLuint NumTexIndirections
;
1923 /** Native, actual h/w counts */
1925 GLuint NumNativeInstructions
;
1926 GLuint NumNativeTemporaries
;
1927 GLuint NumNativeParameters
;
1928 GLuint NumNativeAttributes
;
1929 GLuint NumNativeAddressRegs
;
1930 GLuint NumNativeAluInstructions
;
1931 GLuint NumNativeTexInstructions
;
1932 GLuint NumNativeTexIndirections
;
1937 /** Vertex program object */
1938 struct gl_vertex_program
1940 struct gl_program Base
; /**< base class */
1941 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1942 GLboolean IsPositionInvariant
;
1943 void *TnlData
; /**< should probably use Base.DriverData */
1947 /** Fragment program object */
1948 struct gl_fragment_program
1950 struct gl_program Base
; /**< base class */
1952 GLboolean UsesKill
; /**< shader uses KIL instruction */
1953 GLboolean UsesPointCoord
; /**< shader uses gl_PointCoord */
1954 GLboolean UsesFrontFacing
; /**< shader used gl_FrontFacing */
1955 GLboolean UsesFogFragCoord
; /**< shader used gl_FogFragCoord */
1960 * State common to vertex and fragment programs.
1962 struct gl_program_state
1964 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1965 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1970 * Context state for vertex programs.
1972 struct gl_vertex_program_state
1974 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1975 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1976 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1977 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1978 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1980 /** Currently enabled and valid vertex program (including internal programs,
1981 * user-defined vertex programs and GLSL vertex shaders).
1982 * This is the program we must use when rendering.
1984 struct gl_vertex_program
*_Current
;
1986 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1988 /* For GL_NV_vertex_program only: */
1989 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1990 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1992 /** Should fixed-function T&L be implemented with a vertex prog? */
1993 GLboolean _MaintainTnlProgram
;
1995 /** Program to emulate fixed-function T&L (see above) */
1996 struct gl_vertex_program
*_TnlProgram
;
1998 /** Cache of fixed-function programs */
1999 struct gl_program_cache
*Cache
;
2001 #if FEATURE_MESA_program_debug
2002 GLprogramcallbackMESA Callback
;
2003 GLvoid
*CallbackData
;
2004 GLboolean CallbackEnabled
;
2005 GLuint CurrentPosition
;
2008 GLboolean _Overriden
;
2013 * Context state for fragment programs.
2015 struct gl_fragment_program_state
2017 GLboolean Enabled
; /**< User-set fragment program enable flag */
2018 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2019 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2021 /** Currently enabled and valid fragment program (including internal programs,
2022 * user-defined fragment programs and GLSL fragment shaders).
2023 * This is the program we must use when rendering.
2025 struct gl_fragment_program
*_Current
;
2027 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2029 /** Should fixed-function texturing be implemented with a fragment prog? */
2030 GLboolean _MaintainTexEnvProgram
;
2032 /** Program to emulate fixed-function texture env/combine (see above) */
2033 struct gl_fragment_program
*_TexEnvProgram
;
2035 /** Cache of fixed-function programs */
2036 struct gl_program_cache
*Cache
;
2038 #if FEATURE_MESA_program_debug
2039 GLprogramcallbackMESA Callback
;
2040 GLvoid
*CallbackData
;
2041 GLboolean CallbackEnabled
;
2042 GLuint CurrentPosition
;
2048 * ATI_fragment_shader runtime state
2050 #define ATI_FS_INPUT_PRIMARY 0
2051 #define ATI_FS_INPUT_SECONDARY 1
2053 struct atifs_instruction
;
2054 struct atifs_setupinst
;
2057 * ATI fragment shader
2059 struct ati_fragment_shader
2063 struct atifs_instruction
*Instructions
[2];
2064 struct atifs_setupinst
*SetupInst
[2];
2065 GLfloat Constants
[8][4];
2066 GLbitfield LocalConstDef
; /** Indicates which constants have been set */
2067 GLubyte numArithInstr
[2];
2068 GLubyte regsAssigned
[2];
2069 GLubyte NumPasses
; /** 1 or 2 */
2071 GLubyte last_optype
;
2072 GLboolean interpinp1
;
2078 * Context state for GL_ATI_fragment_shader
2080 struct gl_ati_fragment_shader_state
2083 GLboolean _Enabled
; /** enabled and valid shader? */
2084 GLboolean Compiling
;
2085 GLfloat GlobalConstants
[8][4];
2086 struct ati_fragment_shader
*Current
;
2091 * Occlusion/timer query object.
2093 struct gl_query_object
2095 GLenum Target
; /**< The query target, when active */
2096 GLuint Id
; /**< hash table ID/name */
2097 GLuint64EXT Result
; /**< the counter */
2098 GLboolean Active
; /**< inside Begin/EndQuery */
2099 GLboolean Ready
; /**< result is ready? */
2104 * Context state for query objects.
2106 struct gl_query_state
2108 struct _mesa_HashTable
*QueryObjects
;
2109 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2110 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2114 /** Set by #pragma directives */
2115 struct gl_sl_pragmas
2117 GLboolean Optimize
; /**< defaults on */
2118 GLboolean Debug
; /**< defaults off */
2123 * A GLSL vertex or fragment shader object.
2127 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER (first field!) */
2128 GLuint Name
; /**< AKA the handle */
2129 GLint RefCount
; /**< Reference count */
2130 GLboolean DeletePending
;
2131 GLboolean CompileStatus
;
2132 GLboolean Main
; /**< shader defines main() */
2133 const GLchar
*Source
; /**< Source code string */
2134 struct gl_program
*Program
; /**< Post-compile assembly code */
2136 struct gl_sl_pragmas Pragmas
;
2141 * A GLSL program object.
2142 * Basically a linked collection of vertex and fragment shaders.
2144 struct gl_shader_program
2146 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2147 GLuint Name
; /**< aka handle or ID */
2148 GLint RefCount
; /**< Reference count */
2149 GLboolean DeletePending
;
2151 GLuint NumShaders
; /**< number of attached shaders */
2152 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2154 /** User-defined attribute bindings (glBindAttribLocation) */
2155 struct gl_program_parameter_list
*Attributes
;
2157 /* post-link info: */
2158 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2159 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2160 struct gl_uniform_list
*Uniforms
;
2161 struct gl_program_parameter_list
*Varying
;
2162 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2163 GLboolean Validated
;
2168 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2169 #define GLSL_LOG 0x2 /**< Write shaders to files */
2170 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2171 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2172 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2176 * Context state for GLSL vertex/fragment shaders.
2178 struct gl_shader_state
2180 struct gl_shader_program
*CurrentProgram
; /**< The user-bound program */
2181 /** Driver-selectable options: */
2182 GLboolean EmitHighLevelInstructions
; /**< IF/ELSE/ENDIF vs. BRA, etc. */
2183 GLboolean EmitCondCodes
; /**< Use condition codes? */
2184 GLboolean EmitComments
; /**< Annotated instructions */
2186 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2191 * State which can be shared by multiple contexts:
2193 struct gl_shared_state
2195 _glthread_Mutex Mutex
; /**< for thread safety */
2196 GLint RefCount
; /**< Reference count */
2197 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2198 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2201 * \name Default texture objects (shared by all multi-texture units)
2204 struct gl_texture_object
*Default1D
;
2205 struct gl_texture_object
*Default2D
;
2206 struct gl_texture_object
*Default3D
;
2207 struct gl_texture_object
*DefaultCubeMap
;
2208 struct gl_texture_object
*DefaultRect
;
2209 struct gl_texture_object
*Default1DArray
;
2210 struct gl_texture_object
*Default2DArray
;
2214 * \name Thread safety and statechange notification for texture
2217 * \todo Improve the granularity of locking.
2220 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2221 GLuint TextureStateStamp
; /**< state notification for shared tex */
2226 * \name Vertex/fragment programs
2229 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2230 #if FEATURE_ARB_vertex_program
2231 struct gl_vertex_program
*DefaultVertexProgram
;
2233 #if FEATURE_ARB_fragment_program
2234 struct gl_fragment_program
*DefaultFragmentProgram
;
2238 #if FEATURE_ATI_fragment_shader
2239 struct _mesa_HashTable
*ATIShaders
;
2240 struct ati_fragment_shader
*DefaultFragmentShader
;
2243 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
2244 struct _mesa_HashTable
*BufferObjects
;
2247 #if FEATURE_ARB_shader_objects
2248 /** Table of both gl_shader and gl_shader_program objects */
2249 struct _mesa_HashTable
*ShaderObjects
;
2252 #if FEATURE_EXT_framebuffer_object
2253 struct _mesa_HashTable
*RenderBuffers
;
2254 struct _mesa_HashTable
*FrameBuffers
;
2257 /** Objects associated with the GL_APPLE_vertex_array_object extension. */
2258 struct _mesa_HashTable
*ArrayObjects
;
2260 void *DriverData
; /**< Device driver shared state */
2267 * A renderbuffer stores colors or depth values or stencil values.
2268 * A framebuffer object will have a collection of these.
2269 * Data are read/written to the buffer with a handful of Get/Put functions.
2271 * Instances of this object are allocated with the Driver's NewRenderbuffer
2272 * hook. Drivers will likely wrap this class inside a driver-specific
2273 * class to simulate inheritance.
2275 struct gl_renderbuffer
2277 #define RB_MAGIC 0xaabbccdd
2278 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2279 _glthread_Mutex Mutex
; /**< for thread safety */
2280 GLuint ClassID
; /**< Useful for drivers */
2283 GLuint Width
, Height
;
2284 GLenum InternalFormat
; /**< The user-specified format */
2285 GLenum _ActualFormat
; /**< The driver-chosen format */
2286 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2287 GL_STENCIL_INDEX. */
2288 GLenum ColorEncoding
; /**< GL_LINEAR or GL_SRGB */
2289 GLenum ComponentType
; /**< GL_FLOAT, GL_INT, GL_UNSIGNED_INT,
2290 GL_UNSIGNED_NORMALIZED or GL_INDEX */
2291 GLubyte RedBits
; /**< Bits of red per pixel */
2297 GLubyte StencilBits
;
2300 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2301 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2303 /* Used to wrap one renderbuffer around another: */
2304 struct gl_renderbuffer
*Wrapped
;
2306 /* Delete this renderbuffer */
2307 void (*Delete
)(struct gl_renderbuffer
*rb
);
2309 /* Allocate new storage for this renderbuffer */
2310 GLboolean (*AllocStorage
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2311 GLenum internalFormat
,
2312 GLuint width
, GLuint height
);
2314 /* Lock/Unlock are called before/after calling the Get/Put functions.
2315 * Not sure this is the right place for these yet.
2316 void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2317 void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2320 /* Return a pointer to the element/pixel at (x,y).
2321 * Should return NULL if the buffer memory can't be directly addressed.
2323 void *(*GetPointer
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2326 /* Get/Read a row of values.
2327 * The values will be of format _BaseFormat and type DataType.
2329 void (*GetRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2330 GLint x
, GLint y
, void *values
);
2332 /* Get/Read values at arbitrary locations.
2333 * The values will be of format _BaseFormat and type DataType.
2335 void (*GetValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2336 const GLint x
[], const GLint y
[], void *values
);
2338 /* Put/Write a row of values.
2339 * The values will be of format _BaseFormat and type DataType.
2341 void (*PutRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2342 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2344 /* Put/Write a row of RGB values. This is a special-case routine that's
2345 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2346 * a common case for glDrawPixels and some triangle routines.
2347 * The values will be of format GL_RGB and type DataType.
2349 void (*PutRowRGB
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2350 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2353 /* Put/Write a row of identical values.
2354 * The values will be of format _BaseFormat and type DataType.
2356 void (*PutMonoRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2357 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2359 /* Put/Write values at arbitrary locations.
2360 * The values will be of format _BaseFormat and type DataType.
2362 void (*PutValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2363 const GLint x
[], const GLint y
[], const void *values
,
2364 const GLubyte
*mask
);
2365 /* Put/Write identical values at arbitrary locations.
2366 * The values will be of format _BaseFormat and type DataType.
2368 void (*PutMonoValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2369 GLuint count
, const GLint x
[], const GLint y
[],
2370 const void *value
, const GLubyte
*mask
);
2375 * A renderbuffer attachment point points to either a texture object
2376 * (and specifies a mipmap level, cube face or 3D texture slice) or
2377 * points to a renderbuffer.
2379 struct gl_renderbuffer_attachment
2381 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2385 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2386 * application supplied renderbuffer object.
2388 struct gl_renderbuffer
*Renderbuffer
;
2391 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2392 * supplied texture object.
2394 struct gl_texture_object
*Texture
;
2395 GLuint TextureLevel
; /**< Attached mipmap level. */
2396 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2397 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2398 * and 2D array textures */
2403 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2404 * In C++ terms, think of this as a base class from which device drivers
2405 * will make derived classes.
2407 struct gl_framebuffer
2409 _glthread_Mutex Mutex
; /**< for thread safety */
2410 GLuint Name
; /* if zero, this is a window system framebuffer */
2412 GLboolean DeletePending
;
2414 GLvisual Visual
; /**< The framebuffer's visual.
2415 Immutable if this is a window system buffer.
2416 Computed from attachments if user-made FBO. */
2418 GLboolean Initialized
;
2420 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2422 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2424 GLint _Xmin
, _Xmax
; /**< inclusive */
2425 GLint _Ymin
, _Ymax
; /**< exclusive */
2428 /** \name Derived Z buffer stuff */
2430 GLuint _DepthMax
; /**< Max depth buffer value */
2431 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2432 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2435 GLenum _Status
; /* One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2437 /* Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2438 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2440 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2441 * attribute group and GL_PIXEL attribute group, respectively.
2443 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2444 GLenum ColorReadBuffer
;
2446 /** Computed from ColorDraw/ReadBuffer above */
2447 GLuint _NumColorDrawBuffers
;
2448 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2449 GLint _ColorReadBufferIndex
; /* -1 = None */
2450 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2451 struct gl_renderbuffer
*_ColorReadBuffer
;
2453 /** The Actual depth/stencil buffers to use. May be wrappers around the
2454 * depth/stencil buffers attached above. */
2455 struct gl_renderbuffer
*_DepthBuffer
;
2456 struct gl_renderbuffer
*_StencilBuffer
;
2458 /** Delete this framebuffer */
2459 void (*Delete
)(struct gl_framebuffer
*fb
);
2464 * Limits for vertex and fragment programs.
2466 struct gl_program_constants
2468 /* logical limits */
2469 GLuint MaxInstructions
;
2470 GLuint MaxAluInstructions
; /* fragment programs only, for now */
2471 GLuint MaxTexInstructions
; /* fragment programs only, for now */
2472 GLuint MaxTexIndirections
; /* fragment programs only, for now */
2475 GLuint MaxAddressRegs
; /* vertex program only, for now */
2476 GLuint MaxParameters
;
2477 GLuint MaxLocalParams
;
2478 GLuint MaxEnvParams
;
2479 /* native/hardware limits */
2480 GLuint MaxNativeInstructions
;
2481 GLuint MaxNativeAluInstructions
; /* fragment programs only, for now */
2482 GLuint MaxNativeTexInstructions
; /* fragment programs only, for now */
2483 GLuint MaxNativeTexIndirections
; /* fragment programs only, for now */
2484 GLuint MaxNativeAttribs
;
2485 GLuint MaxNativeTemps
;
2486 GLuint MaxNativeAddressRegs
; /* vertex program only, for now */
2487 GLuint MaxNativeParameters
;
2489 GLuint MaxUniformComponents
;
2494 * Constants which may be overridden by device driver during context creation
2495 * but are never changed after that.
2499 GLint MaxTextureLevels
; /**< Maximum number of allowed mipmap levels. */
2500 GLint Max3DTextureLevels
; /**< Maximum number of allowed mipmap levels for 3D texture targets. */
2501 GLint MaxCubeTextureLevels
; /**< Maximum number of allowed mipmap levels for GL_ARB_texture_cube_map */
2502 GLint MaxArrayTextureLayers
; /**< Maximum number of layers in an array texture. */
2503 GLint MaxTextureRectSize
; /* GL_NV_texture_rectangle */
2504 GLuint MaxTextureCoordUnits
;
2505 GLuint MaxTextureImageUnits
;
2506 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2507 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2508 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2509 GLuint MaxArrayLockSize
;
2511 GLfloat MinPointSize
, MaxPointSize
; /* aliased */
2512 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /* antialiased */
2513 GLfloat PointSizeGranularity
;
2514 GLfloat MinLineWidth
, MaxLineWidth
; /* aliased */
2515 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /* antialiased */
2516 GLfloat LineWidthGranularity
;
2517 GLuint MaxColorTableSize
;
2518 GLuint MaxConvolutionWidth
;
2519 GLuint MaxConvolutionHeight
;
2520 GLuint MaxClipPlanes
;
2522 GLfloat MaxShininess
; /* GL_NV_light_max_exponent */
2523 GLfloat MaxSpotExponent
; /* GL_NV_light_max_exponent */
2524 GLuint MaxViewportWidth
, MaxViewportHeight
;
2525 struct gl_program_constants VertexProgram
; /* GL_ARB_vertex_program */
2526 struct gl_program_constants FragmentProgram
; /* GL_ARB_fragment_program */
2527 /* shared by vertex and fragment program: */
2528 GLuint MaxProgramMatrices
;
2529 GLuint MaxProgramMatrixStackDepth
;
2530 /* vertex array / buffer object bounds checking */
2531 GLboolean CheckArrayBounds
;
2532 /* GL_ARB_draw_buffers */
2533 GLuint MaxDrawBuffers
;
2534 /* GL_OES_read_format */
2535 GLenum ColorReadFormat
;
2536 GLenum ColorReadType
;
2537 /* GL_EXT_framebuffer_object */
2538 GLuint MaxColorAttachments
;
2539 GLuint MaxRenderbufferSize
;
2540 /* GL_ARB_vertex_shader */
2541 GLuint MaxVertexTextureImageUnits
;
2542 GLuint MaxVarying
; /**< Number of float[4] vectors */
2543 /* GL_ARB_framebuffer_object */
2549 * Enable flag for each OpenGL extension. Different device drivers will
2550 * enable different extensions at runtime.
2552 struct gl_extensions
2555 * \name Flags to quickly test if certain extensions are available.
2557 * Not every extension needs to have such a flag, but it's encouraged.
2560 GLboolean dummy
; /* don't remove this! */
2561 GLboolean ARB_depth_texture
;
2562 GLboolean ARB_draw_buffers
;
2563 GLboolean ARB_fragment_program
;
2564 GLboolean ARB_fragment_program_shadow
;
2565 GLboolean ARB_fragment_shader
;
2566 GLboolean ARB_framebuffer_object
;
2567 GLboolean ARB_half_float_pixel
;
2568 GLboolean ARB_imaging
;
2569 GLboolean ARB_multisample
;
2570 GLboolean ARB_multitexture
;
2571 GLboolean ARB_occlusion_query
;
2572 GLboolean ARB_point_sprite
;
2573 GLboolean ARB_shader_objects
;
2574 GLboolean ARB_shading_language_100
;
2575 GLboolean ARB_shading_language_120
;
2576 GLboolean ARB_shadow
;
2577 GLboolean ARB_shadow_ambient
; /* or GL_ARB_shadow_ambient */
2578 GLboolean ARB_texture_border_clamp
;
2579 GLboolean ARB_texture_compression
;
2580 GLboolean ARB_texture_cube_map
;
2581 GLboolean ARB_texture_env_combine
;
2582 GLboolean ARB_texture_env_crossbar
;
2583 GLboolean ARB_texture_env_dot3
;
2584 GLboolean ARB_texture_float
;
2585 GLboolean ARB_texture_mirrored_repeat
;
2586 GLboolean ARB_texture_non_power_of_two
;
2587 GLboolean ARB_transpose_matrix
;
2588 GLboolean ARB_vertex_buffer_object
;
2589 GLboolean ARB_vertex_program
;
2590 GLboolean ARB_vertex_shader
;
2591 GLboolean ARB_window_pos
;
2594 GLboolean EXT_blend_color
;
2595 GLboolean EXT_blend_equation_separate
;
2596 GLboolean EXT_blend_func_separate
;
2597 GLboolean EXT_blend_logic_op
;
2598 GLboolean EXT_blend_minmax
;
2599 GLboolean EXT_blend_subtract
;
2600 GLboolean EXT_clip_volume_hint
;
2601 GLboolean EXT_cull_vertex
;
2602 GLboolean EXT_convolution
;
2603 GLboolean EXT_compiled_vertex_array
;
2604 GLboolean EXT_copy_texture
;
2605 GLboolean EXT_depth_bounds_test
;
2606 GLboolean EXT_draw_range_elements
;
2607 GLboolean EXT_framebuffer_object
;
2608 GLboolean EXT_fog_coord
;
2609 GLboolean EXT_framebuffer_blit
;
2610 GLboolean EXT_gpu_program_parameters
;
2611 GLboolean EXT_histogram
;
2612 GLboolean EXT_multi_draw_arrays
;
2613 GLboolean EXT_paletted_texture
;
2614 GLboolean EXT_packed_depth_stencil
;
2615 GLboolean EXT_packed_pixels
;
2616 GLboolean EXT_pixel_buffer_object
;
2617 GLboolean EXT_point_parameters
;
2618 GLboolean EXT_polygon_offset
;
2619 GLboolean EXT_rescale_normal
;
2620 GLboolean EXT_shadow_funcs
;
2621 GLboolean EXT_secondary_color
;
2622 GLboolean EXT_separate_specular_color
;
2623 GLboolean EXT_shared_texture_palette
;
2624 GLboolean EXT_stencil_wrap
;
2625 GLboolean EXT_stencil_two_side
;
2626 GLboolean EXT_subtexture
;
2627 GLboolean EXT_texture
;
2628 GLboolean EXT_texture_object
;
2629 GLboolean EXT_texture3D
;
2630 GLboolean EXT_texture_compression_s3tc
;
2631 GLboolean EXT_texture_env_add
;
2632 GLboolean EXT_texture_env_combine
;
2633 GLboolean EXT_texture_env_dot3
;
2634 GLboolean EXT_texture_filter_anisotropic
;
2635 GLboolean EXT_texture_lod_bias
;
2636 GLboolean EXT_texture_mirror_clamp
;
2637 GLboolean EXT_texture_sRGB
;
2638 GLboolean EXT_texture_swizzle
;
2639 GLboolean EXT_timer_query
;
2640 GLboolean EXT_vertex_array
;
2641 GLboolean EXT_vertex_array_bgra
;
2642 GLboolean EXT_vertex_array_set
;
2643 /* vendor extensions */
2644 GLboolean APPLE_client_storage
;
2645 GLboolean APPLE_packed_pixels
;
2646 GLboolean APPLE_vertex_array_object
;
2647 GLboolean ATI_texture_mirror_once
;
2648 GLboolean ATI_texture_env_combine3
;
2649 GLboolean ATI_fragment_shader
;
2650 GLboolean ATI_separate_stencil
;
2651 GLboolean IBM_rasterpos_clip
;
2652 GLboolean IBM_multimode_draw_arrays
;
2653 GLboolean MESA_pack_invert
;
2654 GLboolean MESA_packed_depth_stencil
;
2655 GLboolean MESA_program_debug
;
2656 GLboolean MESA_resize_buffers
;
2657 GLboolean MESA_ycbcr_texture
;
2658 GLboolean MESA_texture_array
;
2659 GLboolean NV_blend_square
;
2660 GLboolean NV_fragment_program
;
2661 GLboolean NV_light_max_exponent
;
2662 GLboolean NV_point_sprite
;
2663 GLboolean NV_texgen_reflection
;
2664 GLboolean NV_texture_env_combine4
;
2665 GLboolean NV_texture_rectangle
;
2666 GLboolean NV_vertex_program
;
2667 GLboolean NV_vertex_program1_1
;
2668 GLboolean OES_read_format
;
2669 GLboolean SGI_color_matrix
;
2670 GLboolean SGI_color_table
;
2671 GLboolean SGI_texture_color_table
;
2672 GLboolean SGIS_generate_mipmap
;
2673 GLboolean SGIS_texture_edge_clamp
;
2674 GLboolean SGIS_texture_lod
;
2675 GLboolean TDFX_texture_compression_FXT1
;
2678 /* The extension string */
2679 const GLubyte
*String
;
2684 * A stack of matrices (projection, modelview, color, texture, etc).
2686 struct gl_matrix_stack
2688 GLmatrix
*Top
; /**< points into Stack */
2689 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2690 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2691 GLuint MaxDepth
; /**< size of Stack[] array */
2692 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2697 * \name Bits for image transfer operations
2699 * \sa __GLcontextRec::ImageTransferState.
2702 #define IMAGE_SCALE_BIAS_BIT 0x1
2703 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2704 #define IMAGE_MAP_COLOR_BIT 0x4
2705 #define IMAGE_COLOR_TABLE_BIT 0x8
2706 #define IMAGE_CONVOLUTION_BIT 0x10
2707 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2708 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2709 #define IMAGE_COLOR_MATRIX_BIT 0x80
2710 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2711 #define IMAGE_HISTOGRAM_BIT 0x200
2712 #define IMAGE_MIN_MAX_BIT 0x400
2713 #define IMAGE_CLAMP_BIT 0x800 /* extra */
2716 /** Pixel Transfer ops up to convolution */
2717 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2718 IMAGE_SHIFT_OFFSET_BIT | \
2719 IMAGE_MAP_COLOR_BIT | \
2720 IMAGE_COLOR_TABLE_BIT)
2722 /** Pixel transfer ops after convolution */
2723 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2724 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2725 IMAGE_COLOR_MATRIX_BIT | \
2726 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2727 IMAGE_HISTOGRAM_BIT | \
2733 * \name Bits to indicate what state has changed.
2738 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2739 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2740 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2741 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2742 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2743 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2744 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2745 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2746 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2747 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2748 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2749 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2750 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2751 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2752 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2753 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2754 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2755 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2756 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2757 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2758 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2759 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2760 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2761 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2762 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2763 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2764 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2765 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2766 #define _NEW_CURRENT_ATTRIB 0x10000000 /**< __GLcontextRec::Current */
2772 * \name Bits to track array state changes
2774 * Also used to summarize array enabled.
2777 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2778 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2779 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2780 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2781 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2782 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2783 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2784 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2785 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
2786 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2787 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2788 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2789 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2790 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2791 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2792 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2793 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2794 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2795 #define _NEW_ARRAY_ALL 0xffffffff
2798 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2799 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2805 * \name A bunch of flags that we think might be useful to drivers.
2807 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2810 #define DD_FLATSHADE 0x1
2811 #define DD_SEPARATE_SPECULAR 0x2
2812 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2813 #define DD_TRI_LIGHT_TWOSIDE 0x8
2814 #define DD_TRI_UNFILLED 0x10
2815 #define DD_TRI_SMOOTH 0x20
2816 #define DD_TRI_STIPPLE 0x40
2817 #define DD_TRI_OFFSET 0x80
2818 #define DD_LINE_SMOOTH 0x100
2819 #define DD_LINE_STIPPLE 0x200
2820 #define DD_LINE_WIDTH 0x400
2821 #define DD_POINT_SMOOTH 0x800
2822 #define DD_POINT_SIZE 0x1000
2823 #define DD_POINT_ATTEN 0x2000
2824 #define DD_TRI_TWOSTENCIL 0x4000
2829 * \name Define the state changes under which each of these bits might change
2832 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2833 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2834 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2835 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2836 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2837 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2838 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2839 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2840 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2841 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2842 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2843 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2844 #define _DD_NEW_POINT_SIZE _NEW_POINT
2845 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2849 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2855 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2858 #define _IMAGE_NEW_TRANSFER_STATE (_NEW_PIXEL | _NEW_COLOR_MATRIX)
2863 /* This has to be included here. */
2867 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2870 * Core Mesa's support for tnl modules:
2872 struct gl_tnl_module
2875 * Vertex format to be lazily swapped into current dispatch.
2877 const GLvertexformat
*Current
;
2880 * \name Record of functions swapped out.
2881 * On restore, only need to swap these functions back in.
2885 _glapi_proc
* location
;
2886 _glapi_proc function
;
2887 } Swapped
[NUM_VERTEX_FORMAT_ENTRIES
];
2894 * Display list flags.
2895 * Strictly this is a tnl-private concept, but it doesn't seem
2896 * worthwhile adding a tnl private structure just to hold this one bit
2899 #define DLIST_DANGLING_REFS 0x1
2902 /** Opaque declaration of display list payload data type */
2903 union gl_dlist_node
;
2907 * Provide a location where information about a display list can be
2908 * collected. Could be extended with driverPrivate structures,
2909 * etc. in the future.
2911 struct gl_display_list
2914 GLbitfield Flags
; /**< DLIST_x flags */
2915 /** The dlist commands are in a linked list of nodes */
2916 union gl_dlist_node
*Head
;
2921 * State used during display list compilation and execution.
2923 struct gl_dlist_state
2925 GLuint CallDepth
; /**< Current recursion calling depth */
2927 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
2928 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
2929 GLuint CurrentPos
; /**< Index into current block of nodes */
2931 GLvertexformat ListVtxfmt
;
2933 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
2934 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
2936 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
2937 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
2939 GLubyte ActiveIndex
;
2940 GLfloat CurrentIndex
;
2942 GLubyte ActiveEdgeFlag
;
2943 GLboolean CurrentEdgeFlag
;
2948 * Mesa rendering context.
2950 * This is the central context data structure for Mesa. Almost all
2951 * OpenGL state is contained in this structure.
2952 * Think of this as a base class from which device drivers will derive
2955 * The GLcontext typedef names this structure.
2957 struct __GLcontextRec
2959 /** State possibly shared with other contexts in the address space */
2960 struct gl_shared_state
*Shared
;
2962 /** \name API function pointer tables */
2964 struct _glapi_table
*Save
; /**< Display list save functions */
2965 struct _glapi_table
*Exec
; /**< Execute functions */
2966 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
2970 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
2971 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
2972 GLframebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
2973 GLframebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
2976 * Device driver function pointer table
2978 struct dd_function_table Driver
;
2980 void *DriverCtx
; /**< Points to device driver context/state */
2982 /** Core/Driver constants */
2983 struct gl_constants Const
;
2985 /** \name The various 4x4 matrix stacks */
2987 struct gl_matrix_stack ModelviewMatrixStack
;
2988 struct gl_matrix_stack ProjectionMatrixStack
;
2989 struct gl_matrix_stack ColorMatrixStack
;
2990 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
2991 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
2992 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
2995 /** Combined modelview and projection matrix */
2996 GLmatrix _ModelProjectMatrix
;
2998 /** \name Display lists */
2999 struct gl_dlist_state ListState
;
3001 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3002 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3004 /** Extension information */
3005 struct gl_extensions Extensions
;
3007 /** \name State attribute stack (for glPush/PopAttrib) */
3009 GLuint AttribStackDepth
;
3010 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3013 /** \name Renderer attribute groups
3015 * We define a struct for each attribute group to make pushing and popping
3016 * attributes easy. Also it's a good organization.
3019 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3020 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3021 struct gl_current_attrib Current
; /**< Current attributes */
3022 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3023 struct gl_eval_attrib Eval
; /**< Eval attributes */
3024 struct gl_fog_attrib Fog
; /**< Fog attributes */
3025 struct gl_hint_attrib Hint
; /**< Hint attributes */
3026 struct gl_light_attrib Light
; /**< Light attributes */
3027 struct gl_line_attrib Line
; /**< Line attributes */
3028 struct gl_list_attrib List
; /**< List attributes */
3029 struct gl_multisample_attrib Multisample
;
3030 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3031 struct gl_point_attrib Point
; /**< Point attributes */
3032 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3033 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3034 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3035 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3036 struct gl_texture_attrib Texture
; /**< Texture attributes */
3037 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3038 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3041 /** \name Client attribute stack */
3043 GLuint ClientAttribStackDepth
;
3044 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3047 /** \name Client attribute groups */
3049 struct gl_array_attrib Array
; /**< Vertex arrays */
3050 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3051 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3052 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3055 /** \name Other assorted state (not pushed/popped on attribute stack) */
3057 struct gl_pixelmaps PixelMaps
;
3058 struct gl_histogram_attrib Histogram
;
3059 struct gl_minmax_attrib MinMax
;
3060 struct gl_convolution_attrib Convolution1D
;
3061 struct gl_convolution_attrib Convolution2D
;
3062 struct gl_convolution_attrib Separable2D
;
3064 struct gl_evaluators EvalMap
; /**< All evaluators */
3065 struct gl_feedback Feedback
; /**< Feedback */
3066 struct gl_selection Select
; /**< Selection */
3068 struct gl_color_table ColorTable
[COLORTABLE_MAX
];
3069 struct gl_color_table ProxyColorTable
[COLORTABLE_MAX
];
3071 struct gl_color_table PostConvolutionColorTable
;
3072 struct gl_color_table ProxyPostConvolutionColorTable
;
3073 struct gl_color_table PostColorMatrixColorTable
;
3074 struct gl_color_table ProxyPostColorMatrixColorTable
;
3077 struct gl_program_state Program
; /**< for vertex or fragment progs */
3078 struct gl_vertex_program_state VertexProgram
; /**< GL_ARB/NV_vertex_program */
3079 struct gl_fragment_program_state FragmentProgram
; /**< GL_ARB/NV_vertex_program */
3080 struct gl_ati_fragment_shader_state ATIFragmentShader
; /**< GL_ATI_fragment_shader */
3082 struct gl_query_state Query
; /**< GL_ARB_occlusion_query */
3084 struct gl_shader_state Shader
; /**< GLSL shader object state */
3087 #if FEATURE_EXT_framebuffer_object
3088 struct gl_renderbuffer
*CurrentRenderbuffer
;
3091 GLenum ErrorValue
; /**< Last error code */
3092 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3093 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3095 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3097 /** \name Derived state */
3099 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3100 * state validation so they need to always be current.
3102 GLbitfield _TriangleCaps
;
3103 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3104 GLfloat _EyeZDir
[3];
3105 GLfloat _ModelViewInvScale
;
3106 GLboolean _NeedEyeCoords
;
3107 GLboolean _ForceEyeCoords
;
3108 GLenum _CurrentProgram
; /* currently executing program */
3110 GLuint TextureStateTimestamp
; /* detect changes to shared state */
3112 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3113 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3116 struct gl_list_extensions ListExt
; /**< driver dlist extensions */
3118 /** \name For debugging/development only */
3120 GLboolean FirstTimeCurrent
;
3123 /** Dither disable via MESA_NO_DITHER env var */
3126 /** software compression/decompression supported or not */
3127 GLboolean Mesa_DXTn
;
3129 /** Core tnl module support */
3130 struct gl_tnl_module TnlModule
;
3133 * \name Hooks for module contexts.
3135 * These will eventually live in the driver or elsewhere.
3138 void *swrast_context
;
3139 void *swsetup_context
;
3140 void *swtnl_context
;
3142 struct st_context
*st
;
3148 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
3149 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
3153 extern int MESA_VERBOSE
;
3154 extern int MESA_DEBUG_FLAGS
;
3155 # define MESA_FUNCTION __FUNCTION__
3157 # define MESA_VERBOSE 0
3158 # define MESA_DEBUG_FLAGS 0
3159 # define MESA_FUNCTION "a function"
3168 VERBOSE_VARRAY
= 0x0001,
3169 VERBOSE_TEXTURE
= 0x0002,
3170 VERBOSE_IMMEDIATE
= 0x0004,
3171 VERBOSE_PIPELINE
= 0x0008,
3172 VERBOSE_DRIVER
= 0x0010,
3173 VERBOSE_STATE
= 0x0020,
3174 VERBOSE_API
= 0x0040,
3175 VERBOSE_DISPLAY_LIST
= 0x0100,
3176 VERBOSE_LIGHTING
= 0x0200,
3177 VERBOSE_PRIMS
= 0x0400,
3178 VERBOSE_VERTS
= 0x0800,
3179 VERBOSE_DISASSEM
= 0x1000,
3185 DEBUG_ALWAYS_FLUSH
= 0x1
3190 #define Elements(x) sizeof(x)/sizeof(*(x))
3193 #endif /* TYPES_H */