3 * Main Mesa data structures.
5 * Please try to mark derived values with a leading underscore ('_').
9 * Mesa 3-D graphics library
12 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the "Software"),
16 * to deal in the Software without restriction, including without limitation
17 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
18 * and/or sell copies of the Software, and to permit persons to whom the
19 * Software is furnished to do so, subject to the following conditions:
21 * The above copyright notice and this permission notice shall be included
22 * in all copies or substantial portions of the Software.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
25 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
27 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
28 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
39 #include <GL/internal/glcore.h> /* GLimports/GLexports/GLcontextModes */
40 #include "config.h" /* Hardwired parameters */
41 #include "glapitable.h"
43 #include "math/m_matrix.h" /* GLmatrix */
48 * Color channel data type.
51 typedef GLubyte GLchan
;
53 #define CHAN_MAXF 255.0F
54 #define CHAN_TYPE GL_UNSIGNED_BYTE
56 typedef GLushort GLchan
;
57 #define CHAN_MAX 65535
58 #define CHAN_MAXF 65535.0F
59 #define CHAN_TYPE GL_UNSIGNED_SHORT
61 typedef GLfloat GLchan
;
63 #define CHAN_MAXF 1.0F
64 #define CHAN_TYPE GL_FLOAT
66 #error "illegal number of color channel bits"
71 * Stencil buffer data type.
74 typedef GLubyte GLstencil
;
75 #elif STENCIL_BITS==16
76 typedef GLushort GLstencil
;
78 # error "illegal number of stencil bits"
83 * Fixed point data type.
87 * Fixed point arithmetic macros
89 #ifndef FIXED_FRAC_BITS
90 #define FIXED_FRAC_BITS 11
93 #define FIXED_SHIFT FIXED_FRAC_BITS
94 #define FIXED_ONE (1 << FIXED_SHIFT)
95 #define FIXED_HALF (1 << (FIXED_SHIFT-1))
96 #define FIXED_FRAC_MASK (FIXED_ONE - 1)
97 #define FIXED_INT_MASK (~FIXED_FRAC_MASK)
98 #define FIXED_EPSILON 1
99 #define FIXED_SCALE ((float) FIXED_ONE)
100 #define FIXED_DBL_SCALE ((double) FIXED_ONE)
101 #define FloatToFixed(X) (IROUND((X) * FIXED_SCALE))
102 #define FixedToDouble(X) ((X) * (1.0 / FIXED_DBL_SCALE))
103 #define IntToFixed(I) ((I) << FIXED_SHIFT)
104 #define FixedToInt(X) ((X) >> FIXED_SHIFT)
105 #define FixedToUns(X) (((unsigned int)(X)) >> FIXED_SHIFT)
106 #define FixedCeil(X) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
107 #define FixedFloor(X) ((X) & FIXED_INT_MASK)
108 #define FixedToFloat(X) ((X) * (1.0F / FIXED_SCALE))
109 #define PosFloatToFixed(X) FloatToFixed(X)
110 #define SignedFloatToFixed(X) FloatToFixed(X)
115 * \name Some forward type declarations
118 struct _mesa_HashTable
;
119 struct gl_pixelstore_attrib
;
120 struct gl_texture_format
;
121 struct gl_texture_image
;
122 struct gl_texture_object
;
123 typedef struct __GLcontextRec GLcontext
;
124 typedef struct __GLcontextModesRec GLvisual
;
125 typedef struct gl_framebuffer GLframebuffer
;
131 * Indexes for vertex program attributes.
132 * GL_NV_vertex_program aliases generic attributes over the conventional
133 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
134 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
135 * generic attributes are distinct/separate).
140 VERT_ATTRIB_WEIGHT
= 1,
141 VERT_ATTRIB_NORMAL
= 2,
142 VERT_ATTRIB_COLOR0
= 3,
143 VERT_ATTRIB_COLOR1
= 4,
145 VERT_ATTRIB_COLOR_INDEX
= 6,
146 VERT_ATTRIB_SEVEN
= 7,
147 VERT_ATTRIB_TEX0
= 8,
148 VERT_ATTRIB_TEX1
= 9,
149 VERT_ATTRIB_TEX2
= 10,
150 VERT_ATTRIB_TEX3
= 11,
151 VERT_ATTRIB_TEX4
= 12,
152 VERT_ATTRIB_TEX5
= 13,
153 VERT_ATTRIB_TEX6
= 14,
154 VERT_ATTRIB_TEX7
= 15,
155 VERT_ATTRIB_GENERIC0
= 16,
156 VERT_ATTRIB_GENERIC1
= 17,
157 VERT_ATTRIB_GENERIC2
= 18,
158 VERT_ATTRIB_GENERIC3
= 19,
159 VERT_ATTRIB_GENERIC4
= 20,
160 VERT_ATTRIB_GENERIC5
= 21,
161 VERT_ATTRIB_GENERIC6
= 22,
162 VERT_ATTRIB_GENERIC7
= 23,
163 VERT_ATTRIB_GENERIC8
= 24,
164 VERT_ATTRIB_GENERIC9
= 25,
165 VERT_ATTRIB_GENERIC10
= 26,
166 VERT_ATTRIB_GENERIC11
= 27,
167 VERT_ATTRIB_GENERIC12
= 28,
168 VERT_ATTRIB_GENERIC13
= 29,
169 VERT_ATTRIB_GENERIC14
= 30,
170 VERT_ATTRIB_GENERIC15
= 31,
175 * Bitflags for vertex attributes.
176 * These are used in bitfields in many places.
179 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
180 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
181 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
182 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
183 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
184 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
185 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
186 #define VERT_BIT_SEVEN (1 << VERT_ATTRIB_SEVEN)
187 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
188 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
189 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
190 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
191 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
192 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
193 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
194 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
195 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
196 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
197 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
198 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
199 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
200 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
201 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
202 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
203 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
204 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
205 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
206 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
207 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
208 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
209 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
210 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
212 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
213 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
217 * GLSL allows shader writers to allocate vertex result attributes (varyings) in
218 * single float component granularity. This is in contrast to vertex / fragment
219 * programs, where result attributes (actually texcoords) were allocated
220 * in 4-component vectors of floats granularity.
221 * For performance reasons, it would be optimal to stick with this scheme on a scalar
222 * processor. Varyings will likely be allocated as 3-component vectors, so statistically
224 * The constant VARYINGS_PER_VECTOR tells us how much of float components we pack into
225 * one result vector. For scalar processor it would be 1, for vector processor - 4.
227 * NOTE: Currently we pack varyings into vertex attributes.
229 #define VARYINGS_PER_VECTOR 2
230 #define VARYING_EMIT_STYLE EMIT_2F
231 #define MAX_VARYING_VECTORS ((MAX_VARYING_FLOATS + VARYINGS_PER_VECTOR - 1) / VARYINGS_PER_VECTOR)
234 * Indexes for vertex program result attributes
237 #define VERT_RESULT_HPOS 0
238 #define VERT_RESULT_COL0 1
239 #define VERT_RESULT_COL1 2
240 #define VERT_RESULT_FOGC 3
241 #define VERT_RESULT_TEX0 4
242 #define VERT_RESULT_TEX1 5
243 #define VERT_RESULT_TEX2 6
244 #define VERT_RESULT_TEX3 7
245 #define VERT_RESULT_TEX4 8
246 #define VERT_RESULT_TEX5 9
247 #define VERT_RESULT_TEX6 10
248 #define VERT_RESULT_TEX7 11
249 #define VERT_RESULT_PSIZ 12
250 #define VERT_RESULT_BFC0 13
251 #define VERT_RESULT_BFC1 14
252 #define VERT_RESULT_MAX 15
257 * Indexes for fragment program input attributes.
261 FRAG_ATTRIB_WPOS
= 0,
262 FRAG_ATTRIB_COL0
= 1,
263 FRAG_ATTRIB_COL1
= 2,
264 FRAG_ATTRIB_FOGC
= 3,
265 FRAG_ATTRIB_TEX0
= 4,
266 FRAG_ATTRIB_TEX1
= 5,
267 FRAG_ATTRIB_TEX2
= 6,
268 FRAG_ATTRIB_TEX3
= 7,
269 FRAG_ATTRIB_TEX4
= 8,
270 FRAG_ATTRIB_TEX5
= 9,
271 FRAG_ATTRIB_TEX6
= 10,
272 FRAG_ATTRIB_TEX7
= 11,
277 * Bitflags for fragment program input attributes.
280 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
281 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
282 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
283 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
284 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
285 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
286 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
287 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
288 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
289 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
290 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
291 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
293 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
305 * Fragment program results
308 #define FRAG_RESULT_COLR 0
309 #define FRAG_RESULT_COLH 1
310 #define FRAG_RESULT_DEPR 2
311 #define FRAG_RESULT_MAX 3
316 * Indexes for all renderbuffers
319 BUFFER_FRONT_LEFT
= 0, /* the four standard color buffers */
320 BUFFER_BACK_LEFT
= 1,
321 BUFFER_FRONT_RIGHT
= 2,
322 BUFFER_BACK_RIGHT
= 3,
323 BUFFER_AUX0
= 4, /* optional aux buffer */
330 BUFFER_COLOR0
= 11, /* generic renderbuffers */
342 * Bit flags for all renderbuffers
344 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
345 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
346 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
347 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
348 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
349 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
350 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
351 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
352 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
353 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
354 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
355 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
356 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
357 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
358 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
359 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
360 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
361 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
362 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
365 * Mask of all the color buffer bits (but not accum).
367 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
368 BUFFER_BIT_BACK_LEFT | \
369 BUFFER_BIT_FRONT_RIGHT | \
370 BUFFER_BIT_BACK_RIGHT | \
375 BUFFER_BIT_COLOR0 | \
376 BUFFER_BIT_COLOR1 | \
377 BUFFER_BIT_COLOR2 | \
378 BUFFER_BIT_COLOR3 | \
379 BUFFER_BIT_COLOR4 | \
380 BUFFER_BIT_COLOR5 | \
381 BUFFER_BIT_COLOR6 | \
388 * Data structure for color tables
390 struct gl_color_table
392 GLenum InternalFormat
; /**< The user-specified format */
393 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
394 GLuint Size
; /**< number of entries (rows) in table */
395 GLvoid
*Table
; /**< points to data of <Type> */
396 GLenum Type
; /**< GL_UNSIGNED_BYTE or GL_FLOAT */
401 GLubyte LuminanceSize
;
402 GLubyte IntensitySize
;
407 * \name Bit flags used for updating material values.
410 #define MAT_ATTRIB_FRONT_AMBIENT 0
411 #define MAT_ATTRIB_BACK_AMBIENT 1
412 #define MAT_ATTRIB_FRONT_DIFFUSE 2
413 #define MAT_ATTRIB_BACK_DIFFUSE 3
414 #define MAT_ATTRIB_FRONT_SPECULAR 4
415 #define MAT_ATTRIB_BACK_SPECULAR 5
416 #define MAT_ATTRIB_FRONT_EMISSION 6
417 #define MAT_ATTRIB_BACK_EMISSION 7
418 #define MAT_ATTRIB_FRONT_SHININESS 8
419 #define MAT_ATTRIB_BACK_SHININESS 9
420 #define MAT_ATTRIB_FRONT_INDEXES 10
421 #define MAT_ATTRIB_BACK_INDEXES 11
422 #define MAT_ATTRIB_MAX 12
424 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
425 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
426 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
427 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
428 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
429 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
431 #define MAT_INDEX_AMBIENT 0
432 #define MAT_INDEX_DIFFUSE 1
433 #define MAT_INDEX_SPECULAR 2
435 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
436 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
437 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
438 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
439 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
440 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
441 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
442 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
443 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
444 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
445 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
446 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
449 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
450 MAT_BIT_FRONT_AMBIENT | \
451 MAT_BIT_FRONT_DIFFUSE | \
452 MAT_BIT_FRONT_SPECULAR | \
453 MAT_BIT_FRONT_SHININESS | \
454 MAT_BIT_FRONT_INDEXES)
456 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
457 MAT_BIT_BACK_AMBIENT | \
458 MAT_BIT_BACK_DIFFUSE | \
459 MAT_BIT_BACK_SPECULAR | \
460 MAT_BIT_BACK_SHININESS | \
461 MAT_BIT_BACK_INDEXES)
463 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
467 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
468 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
471 * Material shininess lookup table.
475 struct gl_shine_tab
*next
, *prev
;
476 GLfloat tab
[SHINE_TABLE_SIZE
+1];
483 * Light source state.
487 struct gl_light
*next
; /**< double linked list with sentinel */
488 struct gl_light
*prev
;
490 GLfloat Ambient
[4]; /**< ambient color */
491 GLfloat Diffuse
[4]; /**< diffuse color */
492 GLfloat Specular
[4]; /**< specular color */
493 GLfloat EyePosition
[4]; /**< position in eye coordinates */
494 GLfloat EyeDirection
[4]; /**< spotlight dir in eye coordinates */
495 GLfloat SpotExponent
;
496 GLfloat SpotCutoff
; /**< in degrees */
497 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
498 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
499 GLfloat ConstantAttenuation
;
500 GLfloat LinearAttenuation
;
501 GLfloat QuadraticAttenuation
;
502 GLboolean Enabled
; /**< On/off flag */
505 * \name Derived fields
508 GLbitfield _Flags
; /**< State */
510 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
511 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
512 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
513 GLfloat _NormDirection
[4]; /**< normalized spotlight direction */
514 GLfloat _VP_inf_spot_attenuation
;
516 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
517 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
518 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
519 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
520 GLfloat _dli
; /**< CI diffuse light intensity */
521 GLfloat _sli
; /**< CI specular light intensity */
531 GLfloat Ambient
[4]; /**< ambient color */
532 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
533 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
534 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
535 * or GL_SEPARATE_SPECULAR_COLOR */
544 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
549 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
551 struct gl_accum_attrib
553 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
558 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
560 struct gl_colorbuffer_attrib
562 GLuint ClearIndex
; /**< Index to use for glClear */
563 GLclampf ClearColor
[4]; /**< Color to use for glClear */
565 GLuint IndexMask
; /**< Color index write mask */
566 GLubyte ColorMask
[4]; /**< Each flag is 0xff or 0x0 */
568 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
571 * \name alpha testing
574 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
575 GLenum AlphaFunc
; /**< Alpha test function */
576 GLclampf AlphaRef
; /**< Alpha reference value */
583 GLboolean BlendEnabled
; /**< Blending enabled flag */
584 GLenum BlendSrcRGB
; /**< Blending source operator */
585 GLenum BlendDstRGB
; /**< Blending destination operator */
586 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
587 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
588 GLenum BlendEquationRGB
; /**< Blending equation */
589 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
590 GLfloat BlendColor
[4]; /**< Blending color */
597 GLenum LogicOp
; /**< Logic operator */
598 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
599 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
600 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
603 GLboolean DitherFlag
; /**< Dither enable flag */
605 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
606 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
611 * Current attribute group (GL_CURRENT_BIT).
613 struct gl_current_attrib
616 * \name Current vertex attributes.
617 * \note Values are valid only after FLUSH_VERTICES has been called.
620 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
621 GLfloat Index
; /**< Current color index */
622 GLboolean EdgeFlag
; /**< Current edge flag */
626 * \name Current raster position attributes (always valid).
627 * \note This set of attributes is very similar to the SWvertex struct.
630 GLfloat RasterPos
[4];
631 GLfloat RasterDistance
;
632 GLfloat RasterColor
[4];
633 GLfloat RasterSecondaryColor
[4];
635 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
636 GLboolean RasterPosValid
;
642 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
644 struct gl_depthbuffer_attrib
646 GLenum Func
; /**< Function for depth buffer compare */
647 GLclampd Clear
; /**< Value to clear depth buffer to */
648 GLboolean Test
; /**< Depth buffering enabled flag */
649 GLboolean Mask
; /**< Depth buffer writable? */
650 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
651 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
656 * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
658 struct gl_enable_attrib
661 GLboolean AutoNormal
;
663 GLbitfield ClipPlanes
;
664 GLboolean ColorMaterial
;
665 GLboolean ColorTable
; /* SGI_color_table */
666 GLboolean PostColorMatrixColorTable
; /* SGI_color_table */
667 GLboolean PostConvolutionColorTable
; /* SGI_color_table */
668 GLboolean Convolution1D
;
669 GLboolean Convolution2D
;
670 GLboolean Separable2D
;
676 GLboolean Light
[MAX_LIGHTS
];
678 GLboolean LineSmooth
;
679 GLboolean LineStipple
;
680 GLboolean IndexLogicOp
;
681 GLboolean ColorLogicOp
;
682 GLboolean Map1Color4
;
684 GLboolean Map1Normal
;
685 GLboolean Map1TextureCoord1
;
686 GLboolean Map1TextureCoord2
;
687 GLboolean Map1TextureCoord3
;
688 GLboolean Map1TextureCoord4
;
689 GLboolean Map1Vertex3
;
690 GLboolean Map1Vertex4
;
691 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
692 GLboolean Map2Color4
;
694 GLboolean Map2Normal
;
695 GLboolean Map2TextureCoord1
;
696 GLboolean Map2TextureCoord2
;
697 GLboolean Map2TextureCoord3
;
698 GLboolean Map2TextureCoord4
;
699 GLboolean Map2Vertex3
;
700 GLboolean Map2Vertex4
;
701 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
704 GLboolean PixelTexture
;
705 GLboolean PointSmooth
;
706 GLboolean PolygonOffsetPoint
;
707 GLboolean PolygonOffsetLine
;
708 GLboolean PolygonOffsetFill
;
709 GLboolean PolygonSmooth
;
710 GLboolean PolygonStipple
;
711 GLboolean RescaleNormals
;
714 GLboolean StencilTwoSide
; /* GL_EXT_stencil_two_side */
715 GLboolean MultisampleEnabled
; /* GL_ARB_multisample */
716 GLboolean SampleAlphaToCoverage
; /* GL_ARB_multisample */
717 GLboolean SampleAlphaToOne
; /* GL_ARB_multisample */
718 GLboolean SampleCoverage
; /* GL_ARB_multisample */
719 GLboolean SampleCoverageInvert
; /* GL_ARB_multisample */
720 GLboolean RasterPositionUnclipped
; /* GL_IBM_rasterpos_clip */
721 GLuint Texture
[MAX_TEXTURE_IMAGE_UNITS
];
722 GLuint TexGen
[MAX_TEXTURE_COORD_UNITS
];
723 /* SGI_texture_color_table */
724 GLboolean TextureColorTable
[MAX_TEXTURE_IMAGE_UNITS
];
725 /* GL_ARB_vertex_program / GL_NV_vertex_program */
726 GLboolean VertexProgram
;
727 GLboolean VertexProgramPointSize
;
728 GLboolean VertexProgramTwoSide
;
729 /* GL_ARB_point_sprite / GL_NV_point_sprite */
730 GLboolean PointSprite
;
731 GLboolean FragmentShaderATI
;
736 * Evaluator attribute group (GL_EVAL_BIT).
738 struct gl_eval_attrib
744 GLboolean Map1Color4
;
746 GLboolean Map1Normal
;
747 GLboolean Map1TextureCoord1
;
748 GLboolean Map1TextureCoord2
;
749 GLboolean Map1TextureCoord3
;
750 GLboolean Map1TextureCoord4
;
751 GLboolean Map1Vertex3
;
752 GLboolean Map1Vertex4
;
753 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
754 GLboolean Map2Color4
;
756 GLboolean Map2Normal
;
757 GLboolean Map2TextureCoord1
;
758 GLboolean Map2TextureCoord2
;
759 GLboolean Map2TextureCoord3
;
760 GLboolean Map2TextureCoord4
;
761 GLboolean Map2Vertex3
;
762 GLboolean Map2Vertex4
;
763 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
764 GLboolean AutoNormal
;
768 * \name Map Grid endpoints and divisions and calculated du values
772 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
773 GLint MapGrid2un
, MapGrid2vn
;
774 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
775 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
781 * Fog attribute group (GL_FOG_BIT).
785 GLboolean Enabled
; /**< Fog enabled flag */
786 GLfloat Color
[4]; /**< Fog color */
787 GLfloat Density
; /**< Density >= 0.0 */
788 GLfloat Start
; /**< Start distance in eye coords */
789 GLfloat End
; /**< End distance in eye coords */
790 GLfloat Index
; /**< Fog index */
791 GLenum Mode
; /**< Fog mode */
792 GLboolean ColorSumEnabled
;
793 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
794 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
799 * Hint attribute group (GL_HINT_BIT).
801 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
803 struct gl_hint_attrib
805 GLenum PerspectiveCorrection
;
808 GLenum PolygonSmooth
;
810 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
811 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
812 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
813 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
818 * Histogram attributes.
820 struct gl_histogram_attrib
822 GLuint Width
; /**< number of table entries */
823 GLint Format
; /**< GL_ALPHA, GL_RGB, etc */
824 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /**< the histogram */
825 GLboolean Sink
; /**< terminate image transfer? */
826 GLubyte RedSize
; /**< Bits per counter */
830 GLubyte LuminanceSize
;
835 * Color Min/max state.
837 struct gl_minmax_attrib
841 GLfloat Min
[4], Max
[4]; /**< RGBA */
846 * Image convolution state.
848 struct gl_convolution_attrib
851 GLenum InternalFormat
;
854 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
862 #define LIGHT_SPOT 0x1
863 #define LIGHT_LOCAL_VIEWER 0x2
864 #define LIGHT_POSITIONAL 0x4
865 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
870 * Lighting attribute group (GL_LIGHT_BIT).
872 struct gl_light_attrib
874 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
875 struct gl_lightmodel Model
; /**< Lighting model */
878 * Must flush FLUSH_VERTICES before referencing:
881 struct gl_material Material
; /**< Includes front & back values */
884 GLboolean Enabled
; /**< Lighting enabled flag */
885 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
886 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
887 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
888 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
889 GLboolean ColorMaterialEnabled
;
891 struct gl_light EnabledList
; /**< List sentinel */
894 * Derived state for optimizations:
897 GLboolean _NeedEyeCoords
;
898 GLboolean _NeedVertices
; /**< Use fast shader? */
899 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
900 GLfloat _BaseColor
[2][3];
906 * Line attribute group (GL_LINE_BIT).
908 struct gl_line_attrib
910 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
911 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
912 GLushort StipplePattern
; /**< Stipple pattern */
913 GLint StippleFactor
; /**< Stipple repeat factor */
914 GLfloat Width
; /**< Line width */
915 GLfloat _Width
; /**< Clamped Line width */
920 * Display list attribute group (GL_LIST_BIT).
922 struct gl_list_attrib
929 * Used by device drivers to hook new commands into display lists.
931 struct gl_list_instruction
934 void (*Execute
)( GLcontext
*ctx
, void *data
);
935 void (*Destroy
)( GLcontext
*ctx
, void *data
);
936 void (*Print
)( GLcontext
*ctx
, void *data
);
939 #define MAX_DLIST_EXT_OPCODES 16
942 * Used by device drivers to hook new commands into display lists.
944 struct gl_list_extensions
946 struct gl_list_instruction Opcode
[MAX_DLIST_EXT_OPCODES
];
952 * Multisample attribute group (GL_MULTISAMPLE_BIT).
954 struct gl_multisample_attrib
957 GLboolean SampleAlphaToCoverage
;
958 GLboolean SampleAlphaToOne
;
959 GLboolean SampleCoverage
;
960 GLfloat SampleCoverageValue
;
961 GLboolean SampleCoverageInvert
;
966 * Pixel attribute group (GL_PIXEL_MODE_BIT).
968 struct gl_pixel_attrib
970 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
971 GLfloat RedBias
, RedScale
;
972 GLfloat GreenBias
, GreenScale
;
973 GLfloat BlueBias
, BlueScale
;
974 GLfloat AlphaBias
, AlphaScale
;
975 GLfloat DepthBias
, DepthScale
;
976 GLint IndexShift
, IndexOffset
;
977 GLboolean MapColorFlag
;
978 GLboolean MapStencilFlag
;
979 GLfloat ZoomX
, ZoomY
;
980 /* XXX move these out of gl_pixel_attrib */
981 GLint MapStoSsize
; /**< Size of each pixel map */
991 GLint MapStoS
[MAX_PIXEL_MAP_TABLE
]; /**< Pixel map tables */
992 GLfloat MapItoI
[MAX_PIXEL_MAP_TABLE
];
993 GLfloat MapItoR
[MAX_PIXEL_MAP_TABLE
];
994 GLfloat MapItoG
[MAX_PIXEL_MAP_TABLE
];
995 GLfloat MapItoB
[MAX_PIXEL_MAP_TABLE
];
996 GLfloat MapItoA
[MAX_PIXEL_MAP_TABLE
];
997 GLubyte MapItoR8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
998 GLubyte MapItoG8
[MAX_PIXEL_MAP_TABLE
];
999 GLubyte MapItoB8
[MAX_PIXEL_MAP_TABLE
];
1000 GLubyte MapItoA8
[MAX_PIXEL_MAP_TABLE
];
1001 GLfloat MapRtoR
[MAX_PIXEL_MAP_TABLE
];
1002 GLfloat MapGtoG
[MAX_PIXEL_MAP_TABLE
];
1003 GLfloat MapBtoB
[MAX_PIXEL_MAP_TABLE
];
1004 GLfloat MapAtoA
[MAX_PIXEL_MAP_TABLE
];
1005 /** GL_EXT_histogram */
1006 GLboolean HistogramEnabled
;
1007 GLboolean MinMaxEnabled
;
1008 /** GL_SGI_color_matrix */
1009 GLfloat PostColorMatrixScale
[4]; /**< RGBA */
1010 GLfloat PostColorMatrixBias
[4]; /**< RGBA */
1011 /** GL_SGI_color_table */
1012 GLfloat ColorTableScale
[4];
1013 GLfloat ColorTableBias
[4];
1014 GLboolean ColorTableEnabled
;
1015 GLfloat PCCTscale
[4];
1016 GLfloat PCCTbias
[4];
1017 GLboolean PostConvolutionColorTableEnabled
;
1018 GLfloat PCMCTscale
[4];
1019 GLfloat PCMCTbias
[4];
1020 GLboolean PostColorMatrixColorTableEnabled
;
1021 /** GL_SGI_texture_color_table */
1022 GLfloat TextureColorTableScale
[4];
1023 GLfloat TextureColorTableBias
[4];
1025 GLboolean Convolution1DEnabled
;
1026 GLboolean Convolution2DEnabled
;
1027 GLboolean Separable2DEnabled
;
1028 GLfloat ConvolutionBorderColor
[3][4];
1029 GLenum ConvolutionBorderMode
[3];
1030 GLfloat ConvolutionFilterScale
[3][4];
1031 GLfloat ConvolutionFilterBias
[3][4];
1032 GLfloat PostConvolutionScale
[4]; /**< RGBA */
1033 GLfloat PostConvolutionBias
[4]; /**< RGBA */
1038 * Point attribute group (GL_POINT_BIT).
1040 struct gl_point_attrib
1042 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1043 GLfloat Size
; /**< User-specified point size */
1044 GLfloat _Size
; /**< Size clamped to Const.Min/MaxPointSize */
1045 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1046 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1047 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1048 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1049 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1050 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite */
1051 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1052 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1057 * Polygon attribute group (GL_POLYGON_BIT).
1059 struct gl_polygon_attrib
1061 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1062 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1063 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1064 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1065 GLboolean CullFlag
; /**< Culling on/off flag */
1066 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1067 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1068 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1069 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1070 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1071 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1072 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1073 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1078 * Scissor attributes (GL_SCISSOR_BIT).
1080 struct gl_scissor_attrib
1082 GLboolean Enabled
; /**< Scissor test enabled? */
1083 GLint X
, Y
; /**< Lower left corner of box */
1084 GLsizei Width
, Height
; /**< Size of box */
1089 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1091 struct gl_stencil_attrib
1093 GLboolean Enabled
; /**< Enabled flag */
1094 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1095 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 1) */
1096 GLboolean _TestTwoSide
;
1097 GLenum Function
[2]; /**< Stencil function */
1098 GLenum FailFunc
[2]; /**< Fail function */
1099 GLenum ZPassFunc
[2]; /**< Depth buffer pass function */
1100 GLenum ZFailFunc
[2]; /**< Depth buffer fail function */
1101 GLint Ref
[2]; /**< Reference value */
1102 GLuint ValueMask
[2]; /**< Value mask */
1103 GLuint WriteMask
[2]; /**< Write mask */
1104 GLuint Clear
; /**< Clear value */
1108 #define NUM_TEXTURE_TARGETS 5 /* 1D, 2D, 3D, CUBE and RECT */
1111 * An index for each type of texture object
1114 #define TEXTURE_1D_INDEX 0
1115 #define TEXTURE_2D_INDEX 1
1116 #define TEXTURE_3D_INDEX 2
1117 #define TEXTURE_CUBE_INDEX 3
1118 #define TEXTURE_RECT_INDEX 4
1122 * Bit flags for each type of texture object
1123 * Used for Texture.Unit[]._ReallyEnabled flags.
1126 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1127 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1128 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1129 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1130 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1135 * TexGenEnabled flags.
1146 * Bit flag versions of the corresponding GL_ constants.
1149 #define TEXGEN_SPHERE_MAP 0x1
1150 #define TEXGEN_OBJ_LINEAR 0x2
1151 #define TEXGEN_EYE_LINEAR 0x4
1152 #define TEXGEN_REFLECTION_MAP_NV 0x8
1153 #define TEXGEN_NORMAL_MAP_NV 0x10
1155 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1156 TEXGEN_REFLECTION_MAP_NV | \
1157 TEXGEN_NORMAL_MAP_NV)
1158 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1159 TEXGEN_REFLECTION_MAP_NV | \
1160 TEXGEN_NORMAL_MAP_NV | \
1165 /* A selection of state flags to make driver and module's lives easier. */
1166 #define ENABLE_TEXGEN0 0x1
1167 #define ENABLE_TEXGEN1 0x2
1168 #define ENABLE_TEXGEN2 0x4
1169 #define ENABLE_TEXGEN3 0x8
1170 #define ENABLE_TEXGEN4 0x10
1171 #define ENABLE_TEXGEN5 0x20
1172 #define ENABLE_TEXGEN6 0x40
1173 #define ENABLE_TEXGEN7 0x80
1175 #define ENABLE_TEXMAT0 0x1 /* Ie. not the identity matrix */
1176 #define ENABLE_TEXMAT1 0x2
1177 #define ENABLE_TEXMAT2 0x4
1178 #define ENABLE_TEXMAT3 0x8
1179 #define ENABLE_TEXMAT4 0x10
1180 #define ENABLE_TEXMAT5 0x20
1181 #define ENABLE_TEXMAT6 0x40
1182 #define ENABLE_TEXMAT7 0x80
1184 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
1185 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
1189 * Texel fetch function prototype. We use texel fetch functions to
1190 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1191 * texture images. These functions help to isolate us from the gritty
1192 * details of all the various texture image encodings.
1194 * \param texImage texture image.
1195 * \param col texel column.
1196 * \param row texel row.
1197 * \param img texel image level/layer.
1198 * \param texelOut output texel (up to 4 GLchans)
1200 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1201 GLint col
, GLint row
, GLint img
,
1205 * As above, but returns floats.
1206 * Used for depth component images and for upcoming signed/float
1209 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1210 GLint col
, GLint row
, GLint img
,
1211 GLfloat
*texelOut
);
1214 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1215 GLint col
, GLint row
, GLint img
,
1219 * TexImage store function. This is called by the glTex[Sub]Image
1220 * functions and is responsible for converting the user-specified texture
1221 * image into a specific (hardware) image format.
1223 typedef GLboolean (*StoreTexImageFunc
)(GLcontext
*ctx
, GLuint dims
,
1224 GLenum baseInternalFormat
,
1225 const struct gl_texture_format
*dstFormat
,
1227 GLint dstXoffset
, GLint dstYoffset
, GLint dstZoffset
,
1228 GLint dstRowStride
, GLint dstImageStride
,
1229 GLint srcWidth
, GLint srcHeight
, GLint srcDepth
,
1230 GLenum srcFormat
, GLenum srcType
,
1231 const GLvoid
*srcAddr
,
1232 const struct gl_pixelstore_attrib
*srcPacking
);
1237 * Texture format record
1239 struct gl_texture_format
1241 GLint MesaFormat
; /**< One of the MESA_FORMAT_* values */
1243 GLenum BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1244 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1245 * GL_INTENSITY, GL_COLOR_INDEX or
1246 * GL_DEPTH_COMPONENT.
1248 GLenum DataType
; /**< GL_FLOAT or GL_UNSIGNED_NORMALIZED_ARB */
1249 GLubyte RedBits
; /**< Bits per texel component */
1250 GLubyte GreenBits
; /**< These are just rough approximations for */
1251 GLubyte BlueBits
; /**< compressed texture formats. */
1253 GLubyte LuminanceBits
;
1254 GLubyte IntensityBits
;
1257 GLubyte StencilBits
; /**< GL_EXT_packed_depth_stencil */
1259 GLuint TexelBytes
; /**< Bytes per texel, 0 if compressed format */
1261 StoreTexImageFunc StoreImage
;
1264 * \name Texel fetch function pointers
1267 FetchTexelFuncC FetchTexel1D
;
1268 FetchTexelFuncC FetchTexel2D
;
1269 FetchTexelFuncC FetchTexel3D
;
1270 FetchTexelFuncF FetchTexel1Df
;
1271 FetchTexelFuncF FetchTexel2Df
;
1272 FetchTexelFuncF FetchTexel3Df
;
1275 StoreTexelFunc StoreTexel
;
1280 * Texture image state. Describes the dimensions of a texture image,
1281 * the texel format and pointers to Texel Fetch functions.
1283 struct gl_texture_image
1285 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1286 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1287 * GL_INTENSITY, GL_COLOR_INDEX,
1288 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1289 * only. Used for choosing TexEnv arithmetic.
1291 GLint InternalFormat
; /**< Internal format as given by the user */
1292 GLuint Border
; /**< 0 or 1 */
1293 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1294 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1295 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1296 GLuint RowStride
; /**< == Width unless IsClientData and padded */
1297 GLuint ImageStride
; /**< Stride between images, in texels */
1298 GLuint Width2
; /**< = Width - 2*Border */
1299 GLuint Height2
; /**< = Height - 2*Border */
1300 GLuint Depth2
; /**< = Depth - 2*Border */
1301 GLuint WidthLog2
; /**< = log2(Width2) */
1302 GLuint HeightLog2
; /**< = log2(Height2) */
1303 GLuint DepthLog2
; /**< = log2(Depth2) */
1304 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1305 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1306 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1307 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1308 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1309 GLboolean IsClientData
; /**< Data owned by client? */
1310 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1312 const struct gl_texture_format
*TexFormat
;
1314 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1316 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1317 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1319 GLboolean IsCompressed
; /**< GL_ARB_texture_compression */
1320 GLuint CompressedSize
; /**< GL_ARB_texture_compression */
1323 * \name For device driver:
1326 void *DriverData
; /**< Arbitrary device driver data */
1332 * Indexes for cube map faces.
1335 #define FACE_POS_X 0
1336 #define FACE_NEG_X 1
1337 #define FACE_POS_Y 2
1338 #define FACE_NEG_Y 3
1339 #define FACE_POS_Z 4
1340 #define FACE_NEG_Z 5
1346 * Texture object state. Contains the array of mipmap images, border color,
1347 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1350 struct gl_texture_object
1352 _glthread_Mutex Mutex
; /**< for thread safety */
1353 GLint RefCount
; /**< reference count */
1354 GLuint Name
; /**< the user-visible texture object ID */
1355 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1356 GLfloat Priority
; /**< in [0,1] */
1357 GLfloat BorderColor
[4]; /**< unclamped */
1358 GLchan _BorderChan
[4]; /**< clamped, as GLchan */
1359 GLenum WrapS
; /**< S-axis texture image wrap mode */
1360 GLenum WrapT
; /**< T-axis texture image wrap mode */
1361 GLenum WrapR
; /**< R-axis texture image wrap mode */
1362 GLenum MinFilter
; /**< minification filter */
1363 GLenum MagFilter
; /**< magnification filter */
1364 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1365 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1366 GLfloat LodBias
; /**< OpenGL 1.4 */
1367 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1368 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1369 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1370 GLboolean CompareFlag
; /**< GL_SGIX_shadow */
1371 GLenum CompareOperator
; /**< GL_SGIX_shadow */
1372 GLfloat ShadowAmbient
; /**< GL_ARB_shadow_ambient */
1373 GLenum CompareMode
; /**< GL_ARB_shadow */
1374 GLenum CompareFunc
; /**< GL_ARB_shadow */
1375 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1376 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1377 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1378 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1379 GLboolean Complete
; /**< Is texture object complete? */
1381 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1382 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1384 /** GL_EXT_paletted_texture */
1385 struct gl_color_table Palette
;
1389 * \name For device driver.
1390 * Note: instead of attaching driver data to this pointer, it's preferable
1391 * to instead use this struct as a base class for your own texture object
1392 * class. Driver->NewTextureObject() can be used to implement the
1395 void *DriverData
; /**< Arbitrary device driver data */
1400 * Texture combine environment state.
1403 * If GL_NV_texture_env_combine4 is ever supported, the arrays in this
1404 * structure will need to be expanded for 4 elements.
1406 struct gl_tex_env_combine_state
1408 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1409 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1410 GLenum SourceRGB
[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1411 GLenum SourceA
[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1412 GLenum OperandRGB
[3]; /**< SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
1413 GLenum OperandA
[3]; /**< SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
1414 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1415 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1416 GLuint _NumArgsRGB
; /**< Number of inputs used for the combine mode. */
1417 GLuint _NumArgsA
; /**< Number of inputs used for the combine mode. */
1422 * Texture unit state. Contains enable flags, texture environment/function/
1423 * combiners, texgen state, pointers to current texture objects and
1424 * post-filter color tables.
1426 struct gl_texture_unit
1428 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1429 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1431 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1432 GLfloat EnvColor
[4];
1433 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1434 /** \name Tex coord generation mode
1435 * Either GL_OBJECT_LINEAR, GL_EYE_LINEAR or GL_SPHERE_MAP. */
1442 GLbitfield _GenBitS
;
1443 GLbitfield _GenBitT
;
1444 GLbitfield _GenBitR
;
1445 GLbitfield _GenBitQ
;
1446 GLbitfield _GenFlags
; /**< bitwise or of GenBit[STRQ] */
1447 GLfloat ObjectPlaneS
[4];
1448 GLfloat ObjectPlaneT
[4];
1449 GLfloat ObjectPlaneR
[4];
1450 GLfloat ObjectPlaneQ
[4];
1451 GLfloat EyePlaneS
[4];
1452 GLfloat EyePlaneT
[4];
1453 GLfloat EyePlaneR
[4];
1454 GLfloat EyePlaneQ
[4];
1455 GLfloat LodBias
; /**< for biasing mipmap levels */
1458 * \name GL_EXT_texture_env_combine
1460 struct gl_tex_env_combine_state Combine
;
1463 * Derived state based on \c EnvMode and the \c BaseFormat of the
1464 * currently enabled texture.
1466 struct gl_tex_env_combine_state _EnvMode
;
1469 * Currently enabled combiner state. This will point to either
1470 * \c Combine or \c _EnvMode.
1472 struct gl_tex_env_combine_state
*_CurrentCombine
;
1474 struct gl_texture_object
*Current1D
;
1475 struct gl_texture_object
*Current2D
;
1476 struct gl_texture_object
*Current3D
;
1477 struct gl_texture_object
*CurrentCubeMap
; /**< GL_ARB_texture_cube_map */
1478 struct gl_texture_object
*CurrentRect
; /**< GL_NV_texture_rectangle */
1480 struct gl_texture_object
*_Current
; /**< Points to really enabled tex obj */
1482 struct gl_texture_object Saved1D
; /**< only used by glPush/PopAttrib */
1483 struct gl_texture_object Saved2D
;
1484 struct gl_texture_object Saved3D
;
1485 struct gl_texture_object SavedCubeMap
;
1486 struct gl_texture_object SavedRect
;
1488 /* GL_SGI_texture_color_table */
1489 struct gl_color_table ColorTable
;
1490 struct gl_color_table ProxyColorTable
;
1491 GLboolean ColorTableEnabled
;
1494 struct texenvprog_cache
{
1498 struct texenvprog_cache
*next
;
1502 * Texture attribute group (GL_TEXTURE_BIT).
1504 struct gl_texture_attrib
1510 GLuint CurrentUnit
; /**< Active texture unit */
1511 GLbitfield _EnabledUnits
; /**< one bit set for each really-enabled unit */
1512 GLbitfield _EnabledCoordUnits
; /**< one bit per enabled coordinate unit */
1513 GLbitfield _GenFlags
; /**< for texgen */
1514 GLbitfield _TexGenEnabled
;
1515 GLbitfield _TexMatEnabled
;
1518 struct gl_texture_unit Unit
[MAX_TEXTURE_UNITS
];
1520 struct gl_texture_object
*Proxy1D
;
1521 struct gl_texture_object
*Proxy2D
;
1522 struct gl_texture_object
*Proxy3D
;
1523 struct gl_texture_object
*ProxyCubeMap
;
1524 struct gl_texture_object
*ProxyRect
;
1526 /** GL_EXT_shared_texture_palette */
1527 GLboolean SharedPalette
;
1528 struct gl_color_table Palette
;
1530 /** Cached texenv fragment programs */
1531 struct texenvprog_cache
*env_fp_cache
;
1536 * Transformation attribute group (GL_TRANSFORM_BIT).
1538 struct gl_transform_attrib
1540 GLenum MatrixMode
; /**< Matrix mode */
1541 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1542 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1543 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1544 GLboolean Normalize
; /**< Normalize all normals? */
1545 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1546 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1548 GLboolean CullVertexFlag
; /**< True if GL_CULL_VERTEX_EXT is enabled */
1549 GLfloat CullEyePos
[4];
1550 GLfloat CullObjPos
[4];
1555 * Viewport attribute group (GL_VIEWPORT_BIT).
1557 struct gl_viewport_attrib
1559 GLint X
, Y
; /**< position */
1560 GLsizei Width
, Height
; /**< size */
1561 GLfloat Near
, Far
; /**< Depth buffer range */
1562 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1567 * Node for the attribute stack.
1569 struct gl_attrib_node
1573 struct gl_attrib_node
*next
;
1578 * GL_ARB_vertex/pixel_buffer_object buffer object
1580 struct gl_buffer_object
1586 GLvoid
*Pointer
; /**< Only valid while buffer is mapped */
1587 GLsizeiptrARB Size
; /**< Size of storage in bytes */
1588 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1589 GLboolean OnCard
; /**< Is buffer in VRAM? (hardware drivers) */
1595 * Client pixel packing/unpacking attributes
1597 struct gl_pixelstore_attrib
1603 GLint ImageHeight
; /**< for GL_EXT_texture3D */
1604 GLint SkipImages
; /**< for GL_EXT_texture3D */
1605 GLboolean SwapBytes
;
1607 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1608 GLboolean Invert
; /**< GL_MESA_pack_invert */
1609 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1613 #define CA_CLIENT_DATA 0x1 /**< Data not allocated by mesa */
1617 * Client vertex array attributes
1619 struct gl_client_array
1621 GLint Size
; /**< components per element (1,2,3,4) */
1622 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1623 GLsizei Stride
; /**< user-specified stride */
1624 GLsizei StrideB
; /**< actual stride in bytes */
1625 const GLubyte
*Ptr
; /**< Points to array data */
1626 GLbitfield Enabled
; /**< one of the _NEW_ARRAY_ bits */
1627 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1629 /**< GL_ARB_vertex_buffer_object */
1630 struct gl_buffer_object
*BufferObj
;
1638 * Vertex array state
1640 struct gl_array_attrib
1642 /** Conventional vertex arrays */
1644 struct gl_client_array Vertex
;
1645 struct gl_client_array Normal
;
1646 struct gl_client_array Color
;
1647 struct gl_client_array SecondaryColor
;
1648 struct gl_client_array FogCoord
;
1649 struct gl_client_array Index
;
1650 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1651 struct gl_client_array EdgeFlag
;
1654 /** Generic arrays for vertex programs/shaders; */
1655 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1657 GLint ActiveTexture
; /**< Client Active Texture */
1658 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1659 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1661 GLbitfield _Enabled
; /**< mask of _NEW_ARRAY_* values */
1662 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1664 #if FEATURE_ARB_vertex_buffer_object
1665 struct gl_buffer_object
*NullBufferObj
;
1666 struct gl_buffer_object
*ArrayBufferObj
;
1667 struct gl_buffer_object
*ElementArrayBufferObj
;
1669 GLuint _MaxElement
; /* Min of all enabled array's maxes */
1674 * Feedback buffer state
1679 GLbitfield _Mask
; /* FB_* bits */
1687 * Selection buffer state
1691 GLuint
*Buffer
; /**< selection buffer */
1692 GLuint BufferSize
; /**< size of the selection buffer */
1693 GLuint BufferCount
; /**< number of values in the selection buffer */
1694 GLuint Hits
; /**< number of records in the selection buffer */
1695 GLuint NameStackDepth
; /**< name stack depth */
1696 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1697 GLboolean HitFlag
; /**< hit flag */
1698 GLfloat HitMinZ
; /**< minimum hit depth */
1699 GLfloat HitMaxZ
; /**< maximum hit depth */
1704 * 1-D Evaluator control points
1708 GLuint Order
; /**< Number of control points */
1709 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1710 GLfloat
*Points
; /**< Points to contiguous control points */
1715 * 2-D Evaluator control points
1719 GLuint Uorder
; /**< Number of control points in U dimension */
1720 GLuint Vorder
; /**< Number of control points in V dimension */
1723 GLfloat
*Points
; /**< Points to contiguous control points */
1728 * All evaluator control point state
1730 struct gl_evaluators
1736 struct gl_1d_map Map1Vertex3
;
1737 struct gl_1d_map Map1Vertex4
;
1738 struct gl_1d_map Map1Index
;
1739 struct gl_1d_map Map1Color4
;
1740 struct gl_1d_map Map1Normal
;
1741 struct gl_1d_map Map1Texture1
;
1742 struct gl_1d_map Map1Texture2
;
1743 struct gl_1d_map Map1Texture3
;
1744 struct gl_1d_map Map1Texture4
;
1745 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1752 struct gl_2d_map Map2Vertex3
;
1753 struct gl_2d_map Map2Vertex4
;
1754 struct gl_2d_map Map2Index
;
1755 struct gl_2d_map Map2Color4
;
1756 struct gl_2d_map Map2Normal
;
1757 struct gl_2d_map Map2Texture1
;
1758 struct gl_2d_map Map2Texture2
;
1759 struct gl_2d_map Map2Texture3
;
1760 struct gl_2d_map Map2Texture4
;
1761 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1767 * State used during execution of fragment programs.
1771 GLfloat Temporaries
[MAX_NV_FRAGMENT_PROGRAM_TEMPS
][4];
1772 GLfloat Inputs
[MAX_NV_FRAGMENT_PROGRAM_INPUTS
][4];
1773 GLfloat Outputs
[MAX_NV_FRAGMENT_PROGRAM_OUTPUTS
][4];
1774 GLuint CondCodes
[4];
1779 * Names of the various vertex/fragment program register files, etc.
1780 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1781 * All values should fit in a 4-bit field.
1785 PROGRAM_TEMPORARY
= 0,
1786 PROGRAM_LOCAL_PARAM
= 1,
1787 PROGRAM_ENV_PARAM
= 2,
1788 PROGRAM_STATE_VAR
= 3,
1791 PROGRAM_NAMED_PARAM
= 6,
1792 PROGRAM_CONSTANT
= 7,
1793 PROGRAM_WRITE_ONLY
= 8,
1794 PROGRAM_ADDRESS
= 9,
1795 PROGRAM_UNDEFINED
= 15 /* invalid value */
1799 /** Vertex and fragment instructions */
1800 struct prog_instruction
;
1801 struct program_parameter_list
;
1805 * Base class for any kind of program object
1810 GLubyte
*String
; /**< Null-terminated program text */
1813 GLenum Format
; /**< String encoding format */
1816 struct prog_instruction
*Instructions
;
1818 GLbitfield InputsRead
; /* Bitmask of which input regs are read */
1819 GLbitfield OutputsWritten
; /* Bitmask of which output regs are written to */
1821 /** Named parameters, constants, etc. from program text */
1822 struct program_parameter_list
*Parameters
;
1823 /** Numbered local parameters */
1824 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1826 /** Logical counts */
1828 GLuint NumInstructions
;
1829 GLuint NumTemporaries
;
1830 GLuint NumParameters
;
1831 GLuint NumAttributes
;
1832 GLuint NumAddressRegs
;
1834 /** Native, actual h/w counts */
1836 GLuint NumNativeInstructions
;
1837 GLuint NumNativeTemporaries
;
1838 GLuint NumNativeParameters
;
1839 GLuint NumNativeAttributes
;
1840 GLuint NumNativeAddressRegs
;
1845 /** Vertex program object */
1846 struct vertex_program
1848 struct program Base
; /* base class */
1849 GLboolean IsNVProgram
; /* GL_NV_vertex_program ? */
1850 GLboolean IsPositionInvariant
; /* GL_ARB_vertex_program / GL_NV_vertex_program1_1 */
1851 void *TnlData
; /* should probably use Base.DriverData */
1855 /** Fragment program object */
1856 struct fragment_program
1858 struct program Base
; /**< base class */
1859 GLbitfield TexturesUsed
[MAX_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1860 GLuint NumAluInstructions
; /**< GL_ARB_fragment_program */
1861 GLuint NumTexInstructions
;
1862 GLuint NumTexIndirections
;
1863 GLuint NumNativeAluInstructions
; /**< GL_ARB_fragment_program */
1864 GLuint NumNativeTexInstructions
;
1865 GLuint NumNativeTexIndirections
;
1872 * State common to vertex and fragment programs.
1874 struct gl_program_state
1876 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1877 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1882 * State vars for GL_ARB/GL_NV_vertex_program
1884 struct gl_vertex_program_state
1886 GLboolean Enabled
; /**< GL_VERTEX_PROGRAM_ARB/NV */
1887 GLboolean _Enabled
; /**< Enabled and valid program? */
1888 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1889 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1890 struct vertex_program
*Current
; /**< ptr to currently bound program */
1891 struct vertex_program
*_Current
; /**< ptr to currently bound
1892 program, including internal
1893 (t_vp_build.c) programs */
1895 GLenum TrackMatrix
[MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4];
1896 GLenum TrackMatrixTransform
[MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4];
1898 GLfloat Parameters
[MAX_NV_VERTEX_PROGRAM_PARAMS
][4]; /* Env params */
1899 /* Only used during program execution (may be moved someday): */
1900 GLfloat Temporaries
[MAX_NV_VERTEX_PROGRAM_TEMPS
][4];
1901 GLfloat Inputs
[MAX_NV_VERTEX_PROGRAM_INPUTS
][4];
1902 GLuint InputsSize
[MAX_NV_VERTEX_PROGRAM_INPUTS
];
1903 GLfloat Outputs
[MAX_NV_VERTEX_PROGRAM_OUTPUTS
][4];
1904 GLint AddressReg
[4];
1906 #if FEATURE_MESA_program_debug
1907 GLprogramcallbackMESA Callback
;
1908 GLvoid
*CallbackData
;
1909 GLboolean CallbackEnabled
;
1910 GLuint CurrentPosition
;
1916 * Context state for GL_ARB/NV_fragment_program
1918 struct gl_fragment_program_state
1920 GLboolean Enabled
; /* GL_VERTEX_PROGRAM_NV */
1921 GLboolean _Enabled
; /* Enabled and valid program? */
1923 struct fragment_program
*Current
; /* ptr to currently bound program */
1924 struct fragment_program
*_Current
; /* ptr to currently active program
1925 (including internal programs) */
1926 struct fp_machine Machine
; /* machine state */
1927 GLfloat Parameters
[MAX_NV_FRAGMENT_PROGRAM_PARAMS
][4]; /* Env params */
1929 #if FEATURE_MESA_program_debug
1930 GLprogramcallbackMESA Callback
;
1931 GLvoid
*CallbackData
;
1932 GLboolean CallbackEnabled
;
1933 GLuint CurrentPosition
;
1939 * ATI_fragment_shader runtime state
1941 #define ATI_FS_INPUT_PRIMARY 0
1942 #define ATI_FS_INPUT_SECONDARY 1
1944 struct atifs_instruction
;
1945 struct atifs_setupinst
;
1948 * State for executing ATI fragment shader.
1950 struct atifs_machine
1952 GLfloat Registers
[6][4]; /** six temporary registers */
1953 GLfloat PrevPassRegisters
[6][4];
1954 GLfloat Inputs
[2][4]; /** Primary, secondary input colors */
1959 * ATI fragment shader
1961 struct ati_fragment_shader
1965 struct atifs_instruction
*Instructions
[2];
1966 struct atifs_setupinst
*SetupInst
[2];
1967 GLfloat Constants
[8][4];
1968 GLbitfield LocalConstDef
; /** Indicates which constants have been set */
1969 GLubyte numArithInstr
[2];
1970 GLubyte regsAssigned
[2];
1971 GLubyte NumPasses
; /** 1 or 2 */
1973 GLubyte last_optype
;
1974 GLboolean interpinp1
;
1980 * Context state for GL_ATI_fragment_shader
1982 struct gl_ati_fragment_shader_state
1985 GLboolean _Enabled
; /** enabled and valid shader? */
1986 GLboolean Compiling
;
1987 GLfloat GlobalConstants
[8][4];
1988 struct atifs_machine Machine
; /* machine state */
1989 struct ati_fragment_shader
*Current
;
1994 * Occlusion/timer query object.
1996 struct gl_query_object
1999 GLuint64EXT Result
; /* the counter */
2000 GLboolean Active
; /* inside Begin/EndQuery */
2001 GLboolean Ready
; /* result is ready */
2006 * Context state for query objects.
2008 struct gl_query_state
2010 struct _mesa_HashTable
*QueryObjects
;
2011 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2012 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2017 * Context state for vertex/fragment shaders.
2019 struct gl_shader_objects_state
2021 struct gl2_program_intf
**CurrentProgram
;
2022 GLboolean _VertexShaderPresent
;
2023 GLboolean _FragmentShaderPresent
;
2028 * State which can be shared by multiple contexts:
2030 struct gl_shared_state
2032 _glthread_Mutex Mutex
; /**< for thread safety */
2033 GLint RefCount
; /**< Reference count */
2034 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2035 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2038 * \name Default texture objects (shared by all multi-texture units)
2041 struct gl_texture_object
*Default1D
;
2042 struct gl_texture_object
*Default2D
;
2043 struct gl_texture_object
*Default3D
;
2044 struct gl_texture_object
*DefaultCubeMap
;
2045 struct gl_texture_object
*DefaultRect
;
2049 * \name Vertex/fragment programs
2052 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2053 #if FEATURE_ARB_vertex_program
2054 struct program
*DefaultVertexProgram
;
2056 #if FEATURE_ARB_fragment_program
2057 struct program
*DefaultFragmentProgram
;
2061 #if FEATURE_ATI_fragment_shader
2062 struct _mesa_HashTable
*ATIShaders
;
2063 struct ati_fragment_shader
*DefaultFragmentShader
;
2066 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
2067 struct _mesa_HashTable
*BufferObjects
;
2070 struct _mesa_HashTable
*GL2Objects
;
2072 #if FEATURE_EXT_framebuffer_object
2073 struct _mesa_HashTable
*RenderBuffers
;
2074 struct _mesa_HashTable
*FrameBuffers
;
2077 void *DriverData
; /**< Device driver shared state */
2084 * A renderbuffer stores colors or depth values or stencil values.
2085 * A framebuffer object will have a collection of these.
2086 * Data are read/written to the buffer with a handful of Get/Put functions.
2088 * Instances of this object are allocated with the Driver's NewRenderbuffer
2089 * hook. Drivers will likely wrap this class inside a driver-specific
2090 * class to simulate inheritance.
2092 struct gl_renderbuffer
2094 _glthread_Mutex Mutex
; /**< for thread safety */
2095 GLuint ClassID
; /**< Useful for drivers */
2098 GLuint Width
, Height
;
2099 GLenum InternalFormat
; /**< The user-specified format */
2100 GLenum _ActualFormat
; /**< The driver-chosen format */
2101 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2102 GL_STENCIL_INDEX. */
2103 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2104 GLubyte RedBits
; /**< Bits of red per pixel */
2110 GLubyte StencilBits
;
2113 /* Used to wrap one renderbuffer around another: */
2114 struct gl_renderbuffer
*Wrapped
;
2116 /* Delete this renderbuffer */
2117 void (*Delete
)(struct gl_renderbuffer
*rb
);
2119 /* Allocate new storage for this renderbuffer */
2120 GLboolean (*AllocStorage
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2121 GLenum internalFormat
,
2122 GLuint width
, GLuint height
);
2124 /* Lock/Unlock are called before/after calling the Get/Put functions.
2125 * Not sure this is the right place for these yet.
2126 void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2127 void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2130 /* Return a pointer to the element/pixel at (x,y).
2131 * Should return NULL if the buffer memory can't be directly addressed.
2133 void *(*GetPointer
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2136 /* Get/Read a row of values.
2137 * The values will be of format _BaseFormat and type DataType.
2139 void (*GetRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2140 GLint x
, GLint y
, void *values
);
2142 /* Get/Read values at arbitrary locations.
2143 * The values will be of format _BaseFormat and type DataType.
2145 void (*GetValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2146 const GLint x
[], const GLint y
[], void *values
);
2148 /* Put/Write a row of values.
2149 * The values will be of format _BaseFormat and type DataType.
2151 void (*PutRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2152 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2154 /* Put/Write a row of RGB values. This is a special-case routine that's
2155 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2156 * a common case for glDrawPixels and some triangle routines.
2157 * The values will be of format GL_RGB and type DataType.
2159 void (*PutRowRGB
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2160 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2163 /* Put/Write a row of identical values.
2164 * The values will be of format _BaseFormat and type DataType.
2166 void (*PutMonoRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2167 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2169 /* Put/Write values at arbitrary locations.
2170 * The values will be of format _BaseFormat and type DataType.
2172 void (*PutValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2173 const GLint x
[], const GLint y
[], const void *values
,
2174 const GLubyte
*mask
);
2175 /* Put/Write identical values at arbitrary locations.
2176 * The values will be of format _BaseFormat and type DataType.
2178 void (*PutMonoValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2179 GLuint count
, const GLint x
[], const GLint y
[],
2180 const void *value
, const GLubyte
*mask
);
2185 * A renderbuffer attachment point points to either a texture object
2186 * (and specifies a mipmap level, cube face or 3D texture slice) or
2187 * points to a renderbuffer.
2189 struct gl_renderbuffer_attachment
2191 GLenum Type
; /* GL_NONE or GL_TEXTURE or GL_RENDERBUFFER_EXT */
2194 /* IF Type == GL_RENDERBUFFER_EXT: */
2195 struct gl_renderbuffer
*Renderbuffer
;
2197 /* IF Type == GL_TEXTURE: */
2198 struct gl_texture_object
*Texture
;
2199 GLuint TextureLevel
;
2200 GLuint CubeMapFace
; /* 0 .. 5, for cube map textures */
2201 GLuint Zoffset
; /* for 3D textures */
2206 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2207 * In C++ terms, think of this as a base class from which device drivers
2208 * will make derived classes.
2210 struct gl_framebuffer
2212 _glthread_Mutex Mutex
; /**< for thread safety */
2213 GLuint Name
; /* if zero, this is a window system framebuffer */
2216 GLvisual Visual
; /**< The framebuffer's visual.
2217 Immutable if this is a window system buffer.
2218 Computed from attachments if user-made FBO. */
2220 GLboolean Initialized
;
2222 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2224 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2226 GLint _Xmin
, _Xmax
; /**< inclusive */
2227 GLint _Ymin
, _Ymax
; /**< exclusive */
2230 /** \name Derived Z buffer stuff */
2232 GLuint _DepthMax
; /**< Max depth buffer value */
2233 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2234 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2237 GLenum _Status
; /* One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2239 /* Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2240 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2242 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2243 * attribute group and GL_PIXEL attribute group, respectively.
2245 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2246 GLenum ColorReadBuffer
;
2248 /* These are computed from ColorDrawBuffer and ColorReadBuffer */
2249 GLbitfield _ColorDrawBufferMask
[MAX_DRAW_BUFFERS
]; /* Mask of BUFFER_BIT_* flags */
2250 GLint _ColorReadBufferIndex
; /* -1 = None */
2252 /* These are computed from _ColorDrawBufferMask and _ColorReadBufferIndex */
2253 GLuint _NumColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2254 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
][4];
2255 struct gl_renderbuffer
*_ColorReadBuffer
;
2257 /** The Actual depth/stencil buffers to use. May be wrappers around the
2258 * depth/stencil buffers attached above. */
2259 struct gl_renderbuffer
*_DepthBuffer
;
2260 struct gl_renderbuffer
*_StencilBuffer
;
2262 /** Delete this framebuffer */
2263 void (*Delete
)(struct gl_framebuffer
*fb
);
2268 * Limits for vertex and fragment programs.
2270 struct gl_program_constants
2272 /* logical limits */
2273 GLuint MaxInstructions
;
2274 GLuint MaxAluInstructions
; /* fragment programs only, for now */
2275 GLuint MaxTexInstructions
; /* fragment programs only, for now */
2276 GLuint MaxTexIndirections
; /* fragment programs only, for now */
2279 GLuint MaxAddressRegs
; /* vertex program only, for now */
2280 GLuint MaxParameters
;
2281 GLuint MaxLocalParams
;
2282 GLuint MaxEnvParams
;
2283 /* native/hardware limits */
2284 GLuint MaxNativeInstructions
;
2285 GLuint MaxNativeAluInstructions
; /* fragment programs only, for now */
2286 GLuint MaxNativeTexInstructions
; /* fragment programs only, for now */
2287 GLuint MaxNativeTexIndirections
; /* fragment programs only, for now */
2288 GLuint MaxNativeAttribs
;
2289 GLuint MaxNativeTemps
;
2290 GLuint MaxNativeAddressRegs
; /* vertex program only, for now */
2291 GLuint MaxNativeParameters
;
2296 * Constants which may be overridden by device driver during context creation
2297 * but are never changed after that.
2301 GLint MaxTextureLevels
; /**< Maximum number of allowed mipmap levels. */
2302 GLint Max3DTextureLevels
; /**< Maximum number of allowed mipmap levels for 3D texture targets. */
2303 GLint MaxCubeTextureLevels
; /**< Maximum number of allowed mipmap levels for GL_ARB_texture_cube_map */
2304 GLint MaxTextureRectSize
; /* GL_NV_texture_rectangle */
2305 GLuint MaxTextureCoordUnits
;
2306 GLuint MaxTextureImageUnits
;
2307 GLuint MaxTextureUnits
; /* = MIN(CoordUnits, ImageUnits) */
2308 GLfloat MaxTextureMaxAnisotropy
; /* GL_EXT_texture_filter_anisotropic */
2309 GLfloat MaxTextureLodBias
; /* GL_EXT_texture_lod_bias */
2310 GLuint MaxArrayLockSize
;
2312 GLfloat MinPointSize
, MaxPointSize
; /* aliased */
2313 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /* antialiased */
2314 GLfloat PointSizeGranularity
;
2315 GLfloat MinLineWidth
, MaxLineWidth
; /* aliased */
2316 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /* antialiased */
2317 GLfloat LineWidthGranularity
;
2318 GLuint MaxColorTableSize
;
2319 GLuint MaxConvolutionWidth
;
2320 GLuint MaxConvolutionHeight
;
2321 GLuint MaxClipPlanes
;
2323 GLfloat MaxShininess
; /* GL_NV_light_max_exponent */
2324 GLfloat MaxSpotExponent
; /* GL_NV_light_max_exponent */
2325 GLuint MaxViewportWidth
, MaxViewportHeight
;
2326 struct gl_program_constants VertexProgram
; /* GL_ARB_vertex_program */
2327 struct gl_program_constants FragmentProgram
; /* GL_ARB_fragment_program */
2328 /* shared by vertex and fragment program: */
2329 GLuint MaxProgramMatrices
;
2330 GLuint MaxProgramMatrixStackDepth
;
2331 /* vertex array / buffer object bounds checking */
2332 GLboolean CheckArrayBounds
;
2333 /* GL_ARB_draw_buffers */
2334 GLuint MaxDrawBuffers
;
2335 /* GL_OES_read_format */
2336 GLenum ColorReadFormat
;
2337 GLenum ColorReadType
;
2338 /* GL_EXT_framebuffer_object */
2339 GLuint MaxColorAttachments
;
2340 GLuint MaxRenderbufferSize
;
2345 * Enable flag for each OpenGL extension. Different device drivers will
2346 * enable different extensions at runtime.
2348 struct gl_extensions
2351 * \name Flags to quickly test if certain extensions are available.
2353 * Not every extension needs to have such a flag, but it's encouraged.
2356 GLboolean dummy
; /* don't remove this! */
2357 GLboolean ARB_depth_texture
;
2358 GLboolean ARB_draw_buffers
;
2359 GLboolean ARB_fragment_program
;
2360 GLboolean ARB_fragment_shader
;
2361 GLboolean ARB_half_float_pixel
;
2362 GLboolean ARB_imaging
;
2363 GLboolean ARB_multisample
;
2364 GLboolean ARB_multitexture
;
2365 GLboolean ARB_occlusion_query
;
2366 GLboolean ARB_point_sprite
;
2367 GLboolean ARB_shader_objects
;
2368 GLboolean ARB_shading_language_100
;
2369 GLboolean ARB_shadow
;
2370 GLboolean ARB_texture_border_clamp
;
2371 GLboolean ARB_texture_compression
;
2372 GLboolean ARB_texture_cube_map
;
2373 GLboolean ARB_texture_env_combine
;
2374 GLboolean ARB_texture_env_crossbar
;
2375 GLboolean ARB_texture_env_dot3
;
2376 GLboolean ARB_texture_float
;
2377 GLboolean ARB_texture_mirrored_repeat
;
2378 GLboolean ARB_texture_non_power_of_two
;
2379 GLboolean ARB_transpose_matrix
;
2380 GLboolean ARB_vertex_buffer_object
;
2381 GLboolean ARB_vertex_program
;
2382 GLboolean ARB_vertex_shader
;
2383 GLboolean ARB_window_pos
;
2386 GLboolean EXT_blend_color
;
2387 GLboolean EXT_blend_equation_separate
;
2388 GLboolean EXT_blend_func_separate
;
2389 GLboolean EXT_blend_logic_op
;
2390 GLboolean EXT_blend_minmax
;
2391 GLboolean EXT_blend_subtract
;
2392 GLboolean EXT_clip_volume_hint
;
2393 GLboolean EXT_cull_vertex
;
2394 GLboolean EXT_convolution
;
2395 GLboolean EXT_compiled_vertex_array
;
2396 GLboolean EXT_copy_texture
;
2397 GLboolean EXT_depth_bounds_test
;
2398 GLboolean EXT_draw_range_elements
;
2399 GLboolean EXT_framebuffer_object
;
2400 GLboolean EXT_fog_coord
;
2401 GLboolean EXT_framebuffer_blit
;
2402 GLboolean EXT_histogram
;
2403 GLboolean EXT_multi_draw_arrays
;
2404 GLboolean EXT_paletted_texture
;
2405 GLboolean EXT_packed_depth_stencil
;
2406 GLboolean EXT_packed_pixels
;
2407 GLboolean EXT_pixel_buffer_object
;
2408 GLboolean EXT_point_parameters
;
2409 GLboolean EXT_polygon_offset
;
2410 GLboolean EXT_rescale_normal
;
2411 GLboolean EXT_shadow_funcs
;
2412 GLboolean EXT_secondary_color
;
2413 GLboolean EXT_separate_specular_color
;
2414 GLboolean EXT_shared_texture_palette
;
2415 GLboolean EXT_stencil_wrap
;
2416 GLboolean EXT_stencil_two_side
;
2417 GLboolean EXT_subtexture
;
2418 GLboolean EXT_texture
;
2419 GLboolean EXT_texture_object
;
2420 GLboolean EXT_texture3D
;
2421 GLboolean EXT_texture_compression_s3tc
;
2422 GLboolean EXT_texture_env_add
;
2423 GLboolean EXT_texture_env_combine
;
2424 GLboolean EXT_texture_env_dot3
;
2425 GLboolean EXT_texture_filter_anisotropic
;
2426 GLboolean EXT_texture_lod_bias
;
2427 GLboolean EXT_texture_mirror_clamp
;
2428 GLboolean EXT_timer_query
;
2429 GLboolean EXT_vertex_array
;
2430 GLboolean EXT_vertex_array_set
;
2431 /* vendor extensions */
2432 GLboolean APPLE_client_storage
;
2433 GLboolean APPLE_packed_pixels
;
2434 GLboolean ATI_texture_mirror_once
;
2435 GLboolean ATI_texture_env_combine3
;
2436 GLboolean ATI_fragment_shader
;
2437 GLboolean IBM_rasterpos_clip
;
2438 GLboolean IBM_multimode_draw_arrays
;
2439 GLboolean MESA_pack_invert
;
2440 GLboolean MESA_packed_depth_stencil
;
2441 GLboolean MESA_program_debug
;
2442 GLboolean MESA_resize_buffers
;
2443 GLboolean MESA_ycbcr_texture
;
2444 GLboolean NV_blend_square
;
2445 GLboolean NV_fragment_program
;
2446 GLboolean NV_light_max_exponent
;
2447 GLboolean NV_point_sprite
;
2448 GLboolean NV_texgen_reflection
;
2449 GLboolean NV_texture_rectangle
;
2450 GLboolean NV_vertex_program
;
2451 GLboolean NV_vertex_program1_1
;
2452 GLboolean OES_read_format
;
2453 GLboolean SGI_color_matrix
;
2454 GLboolean SGI_color_table
;
2455 GLboolean SGI_texture_color_table
;
2456 GLboolean SGIS_generate_mipmap
;
2457 GLboolean SGIS_texture_edge_clamp
;
2458 GLboolean SGIS_texture_lod
;
2459 GLboolean SGIX_depth_texture
;
2460 GLboolean SGIX_shadow
;
2461 GLboolean SGIX_shadow_ambient
; /* or GL_ARB_shadow_ambient */
2462 GLboolean TDFX_texture_compression_FXT1
;
2465 /* The extension string */
2466 const GLubyte
*String
;
2471 * A stack of matrices (projection, modelview, color, texture, etc).
2475 GLmatrix
*Top
; /**< points into Stack */
2476 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2477 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2478 GLuint MaxDepth
; /**< size of Stack[] array */
2479 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2484 * \name Bits for image transfer operations
2486 * \sa __GLcontextRec::ImageTransferState.
2489 #define IMAGE_SCALE_BIAS_BIT 0x1
2490 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2491 #define IMAGE_MAP_COLOR_BIT 0x4
2492 #define IMAGE_COLOR_TABLE_BIT 0x8
2493 #define IMAGE_CONVOLUTION_BIT 0x10
2494 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2495 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2496 #define IMAGE_COLOR_MATRIX_BIT 0x80
2497 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2498 #define IMAGE_HISTOGRAM_BIT 0x200
2499 #define IMAGE_MIN_MAX_BIT 0x400
2500 #define IMAGE_CLAMP_BIT 0x800 /* extra */
2503 /** Pixel Transfer ops up to convolution */
2504 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2505 IMAGE_SHIFT_OFFSET_BIT | \
2506 IMAGE_MAP_COLOR_BIT | \
2507 IMAGE_COLOR_TABLE_BIT)
2509 /** Pixel transfer ops after convolution */
2510 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2511 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2512 IMAGE_COLOR_MATRIX_BIT | \
2513 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2514 IMAGE_HISTOGRAM_BIT | \
2520 * \name Bits to indicate what state has changed.
2525 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2526 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2527 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2528 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2529 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2530 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2531 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2532 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2533 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2534 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2535 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2536 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2537 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2538 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2539 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2540 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2541 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2542 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2543 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2544 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2545 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2546 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2547 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2548 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2549 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2550 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2551 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2552 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2558 * \name Bits to track array state changes
2560 * Also used to summarize array enabled.
2563 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2564 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2565 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2566 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2567 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2568 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2569 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2570 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_SEVEN
2571 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2572 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2573 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2574 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2575 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2576 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2577 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2578 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2579 #define _NEW_ARRAY_ATTRIB_0 0x10000 /* start at bit 16 */
2580 #define _NEW_ARRAY_ALL 0xffffffff
2583 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2584 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2589 * \name A bunch of flags that we think might be useful to drivers.
2591 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2594 #define DD_FLATSHADE 0x1
2595 #define DD_SEPARATE_SPECULAR 0x2
2596 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2597 #define DD_TRI_LIGHT_TWOSIDE 0x8
2598 #define DD_TRI_UNFILLED 0x10
2599 #define DD_TRI_SMOOTH 0x20
2600 #define DD_TRI_STIPPLE 0x40
2601 #define DD_TRI_OFFSET 0x80
2602 #define DD_LINE_SMOOTH 0x100
2603 #define DD_LINE_STIPPLE 0x200
2604 #define DD_LINE_WIDTH 0x400
2605 #define DD_POINT_SMOOTH 0x800
2606 #define DD_POINT_SIZE 0x1000
2607 #define DD_POINT_ATTEN 0x2000
2608 #define DD_TRI_TWOSTENCIL 0x4000
2613 * \name Define the state changes under which each of these bits might change
2616 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2617 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2618 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2619 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2620 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2621 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2622 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2623 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2624 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2625 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2626 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2627 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2628 #define _DD_NEW_POINT_SIZE _NEW_POINT
2629 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2633 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2638 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2641 #define _IMAGE_NEW_TRANSFER_STATE (_NEW_PIXEL | _NEW_COLOR_MATRIX)
2647 * Forward declaration of display list data types:
2650 typedef union node Node
;
2653 /* This has to be included here. */
2657 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2660 * Core Mesa's support for tnl modules:
2662 struct gl_tnl_module
2665 * Vertex format to be lazily swapped into current dispatch.
2667 const GLvertexformat
*Current
;
2670 * \name Record of functions swapped out.
2671 * On restore, only need to swap these functions back in.
2675 _glapi_proc
* location
;
2676 _glapi_proc function
;
2677 } Swapped
[NUM_VERTEX_FORMAT_ENTRIES
];
2682 /* Strictly this is a tnl/ private concept, but it doesn't seem
2683 * worthwhile adding a tnl private structure just to hold this one bit
2686 #define MESA_DLIST_DANGLING_REFS 0x1
2688 /* Provide a location where information about a display list can be
2689 * collected. Could be extended with driverPrivate structures,
2690 * etc. in the future.
2692 struct mesa_display_list
2701 * State used during display list compilation and execution.
2703 struct mesa_list_state
2705 struct mesa_display_list
*CallStack
[MAX_LIST_NESTING
];
2706 GLuint CallDepth
; /**< Current recursion calling depth */
2708 struct mesa_display_list
*CurrentList
;
2709 Node
*CurrentListPtr
; /**< Head of list being compiled */
2710 GLuint CurrentListNum
; /**< Number of the list being compiled */
2711 Node
*CurrentBlock
; /**< Pointer to current block of nodes */
2712 GLuint CurrentPos
; /**< Index into current block of nodes */
2714 GLvertexformat ListVtxfmt
;
2716 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
2717 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
2719 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
2720 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
2722 GLubyte ActiveIndex
;
2723 GLfloat CurrentIndex
;
2725 GLubyte ActiveEdgeFlag
;
2726 GLboolean CurrentEdgeFlag
;
2731 * Mesa rendering context.
2733 * This is the central context data structure for Mesa. Almost all
2734 * OpenGL state is contained in this structure.
2735 * Think of this as a base class from which device drivers will derive
2738 * The GLcontext typedef names this structure.
2740 struct __GLcontextRec
2743 * \name OS related interfaces.
2745 * These \b must be the first members of this structure, because they are
2746 * exposed to the outside world (i.e. GLX extension).
2749 __GLimports imports
;
2750 __GLexports exports
;
2753 /** State possibly shared with other contexts in the address space */
2754 struct gl_shared_state
*Shared
;
2756 /** \name API function pointer tables */
2758 struct _glapi_table
*Save
; /**< Display list save functions */
2759 struct _glapi_table
*Exec
; /**< Execute functions */
2760 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
2764 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
2765 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
2766 GLframebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
2767 GLframebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
2770 * Device driver function pointer table
2772 struct dd_function_table Driver
;
2774 void *DriverCtx
; /**< Points to device driver context/state */
2775 void *DriverMgrCtx
; /**< Points to device driver manager (optional)*/
2777 /** Core/Driver constants */
2778 struct gl_constants Const
;
2780 /** \name The various 4x4 matrix stacks */
2782 struct matrix_stack ModelviewMatrixStack
;
2783 struct matrix_stack ProjectionMatrixStack
;
2784 struct matrix_stack ColorMatrixStack
;
2785 struct matrix_stack TextureMatrixStack
[MAX_TEXTURE_COORD_UNITS
];
2786 struct matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
2787 struct matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
2790 /** Combined modelview and projection matrix */
2791 GLmatrix _ModelProjectMatrix
;
2793 /** \name Display lists */
2794 struct mesa_list_state ListState
;
2796 GLboolean ExecuteFlag
; /**< Execute GL commands? */
2797 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
2799 /** Extension information */
2800 struct gl_extensions Extensions
;
2802 /** \name State attribute stack (for glPush/PopAttrib) */
2804 GLuint AttribStackDepth
;
2805 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
2808 /** \name Renderer attribute groups
2810 * We define a struct for each attribute group to make pushing and popping
2811 * attributes easy. Also it's a good organization.
2814 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
2815 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
2816 struct gl_current_attrib Current
; /**< Current attributes */
2817 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
2818 struct gl_eval_attrib Eval
; /**< Eval attributes */
2819 struct gl_fog_attrib Fog
; /**< Fog attributes */
2820 struct gl_hint_attrib Hint
; /**< Hint attributes */
2821 struct gl_light_attrib Light
; /**< Light attributes */
2822 struct gl_line_attrib Line
; /**< Line attributes */
2823 struct gl_list_attrib List
; /**< List attributes */
2824 struct gl_multisample_attrib Multisample
;
2825 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
2826 struct gl_point_attrib Point
; /**< Point attributes */
2827 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
2828 GLuint PolygonStipple
[32]; /**< Polygon stipple */
2829 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
2830 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
2831 struct gl_texture_attrib Texture
; /**< Texture attributes */
2832 struct gl_transform_attrib Transform
; /**< Transformation attributes */
2833 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
2836 /** \name Client attribute stack */
2838 GLuint ClientAttribStackDepth
;
2839 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
2842 /** \name Client attribute groups */
2844 struct gl_array_attrib Array
; /**< Vertex arrays */
2845 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
2846 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
2847 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
2850 /** \name Other assorted state (not pushed/popped on attribute stack) */
2852 struct gl_histogram_attrib Histogram
;
2853 struct gl_minmax_attrib MinMax
;
2854 struct gl_convolution_attrib Convolution1D
;
2855 struct gl_convolution_attrib Convolution2D
;
2856 struct gl_convolution_attrib Separable2D
;
2858 struct gl_evaluators EvalMap
; /**< All evaluators */
2859 struct gl_feedback Feedback
; /**< Feedback */
2860 struct gl_selection Select
; /**< Selection */
2862 struct gl_color_table ColorTable
; /**< Pre-convolution */
2863 struct gl_color_table ProxyColorTable
; /**< Pre-convolution */
2864 struct gl_color_table PostConvolutionColorTable
;
2865 struct gl_color_table ProxyPostConvolutionColorTable
;
2866 struct gl_color_table PostColorMatrixColorTable
;
2867 struct gl_color_table ProxyPostColorMatrixColorTable
;
2869 struct gl_program_state Program
; /**< for vertex or fragment progs */
2870 struct gl_vertex_program_state VertexProgram
; /**< GL_ARB/NV_vertex_program */
2871 struct gl_fragment_program_state FragmentProgram
; /**< GL_ARB/NV_vertex_program */
2872 struct gl_ati_fragment_shader_state ATIFragmentShader
; /**< GL_ATI_fragment_shader */
2874 struct fragment_program
*_TexEnvProgram
; /**< Texture state as fragment program */
2875 struct vertex_program
*_TnlProgram
; /**< Fixed func TNL state as vertex program */
2877 GLboolean _MaintainTnlProgram
;
2878 GLboolean _MaintainTexEnvProgram
;
2879 GLboolean _UseTexEnvProgram
;
2881 struct gl_query_state Query
; /**< GL_ARB_occlusion_query */
2883 struct gl_shader_objects_state ShaderObjects
; /* GL_ARB_shader_objects */
2886 #if FEATURE_EXT_framebuffer_object
2887 struct gl_renderbuffer
*CurrentRenderbuffer
;
2890 GLenum ErrorValue
; /**< Last error code */
2891 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
2892 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
2894 /** \name Derived state */
2896 GLbitfield _TriangleCaps
; /**< bitwise-or of DD_* flags */
2897 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
2898 GLfloat _EyeZDir
[3];
2899 GLfloat _ModelViewInvScale
;
2900 GLboolean _NeedEyeCoords
;
2901 GLboolean _ForceEyeCoords
;
2902 GLenum _CurrentProgram
; /* currently executing program */
2904 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
2905 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
2908 struct gl_list_extensions ListExt
; /**< driver dlist extensions */
2911 GLuint _Facing
; /**< This is a hack for 2-sided stencil test.
2913 * We don't have a better way to communicate this value from
2914 * swrast_setup to swrast. */
2916 /** \name For debugging/development only */
2918 GLboolean FirstTimeCurrent
;
2921 /** Dither disable via MESA_NO_DITHER env var */
2924 /** software compression/decompression supported or not */
2925 GLboolean Mesa_DXTn
;
2927 /** Core tnl module support */
2928 struct gl_tnl_module TnlModule
;
2931 * \name Hooks for module contexts.
2933 * These will eventually live in the driver or elsewhere.
2936 void *swrast_context
;
2937 void *swsetup_context
;
2938 void *swtnl_context
;
2940 void *acache_context
;
2946 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
2947 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
2951 extern int MESA_VERBOSE
;
2952 extern int MESA_DEBUG_FLAGS
;
2953 # define MESA_FUNCTION __FUNCTION__
2955 # define MESA_VERBOSE 0
2956 # define MESA_DEBUG_FLAGS 0
2957 # define MESA_FUNCTION "a function"
2966 VERBOSE_VARRAY
= 0x0001,
2967 VERBOSE_TEXTURE
= 0x0002,
2968 VERBOSE_IMMEDIATE
= 0x0004,
2969 VERBOSE_PIPELINE
= 0x0008,
2970 VERBOSE_DRIVER
= 0x0010,
2971 VERBOSE_STATE
= 0x0020,
2972 VERBOSE_API
= 0x0040,
2973 VERBOSE_DISPLAY_LIST
= 0x0100,
2974 VERBOSE_LIGHTING
= 0x0200,
2975 VERBOSE_PRIMS
= 0x0400,
2976 VERBOSE_VERTS
= 0x0800,
2977 VERBOSE_DISASSEM
= 0x1000
2983 DEBUG_ALWAYS_FLUSH
= 0x1
2988 #define Elements(x) sizeof(x)/sizeof(*(x))
2991 #endif /* TYPES_H */