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) 1999-2007 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> /* __GLcontextModes (GLvisual) */
40 #include "config.h" /* Hardwired parameters */
41 #include "glapi/glapitable.h"
42 #include "glapi/glthread.h"
43 #include "math/m_matrix.h" /* GLmatrix */
48 * Special, internal token
50 #define GL_SHADER_PROGRAM_MESA 0x9999
54 * Color channel data type.
57 typedef GLubyte GLchan
;
59 #define CHAN_MAXF 255.0F
60 #define CHAN_TYPE GL_UNSIGNED_BYTE
62 typedef GLushort GLchan
;
63 #define CHAN_MAX 65535
64 #define CHAN_MAXF 65535.0F
65 #define CHAN_TYPE GL_UNSIGNED_SHORT
67 typedef GLfloat GLchan
;
69 #define CHAN_MAXF 1.0F
70 #define CHAN_TYPE GL_FLOAT
72 #error "illegal number of color channel bits"
77 * Stencil buffer data type.
80 typedef GLubyte GLstencil
;
81 #elif STENCIL_BITS==16
82 typedef GLushort GLstencil
;
84 # error "illegal number of stencil bits"
89 * Fixed point data type.
93 * Fixed point arithmetic macros
95 #ifndef FIXED_FRAC_BITS
96 #define FIXED_FRAC_BITS 11
99 #define FIXED_SHIFT FIXED_FRAC_BITS
100 #define FIXED_ONE (1 << FIXED_SHIFT)
101 #define FIXED_HALF (1 << (FIXED_SHIFT-1))
102 #define FIXED_FRAC_MASK (FIXED_ONE - 1)
103 #define FIXED_INT_MASK (~FIXED_FRAC_MASK)
104 #define FIXED_EPSILON 1
105 #define FIXED_SCALE ((float) FIXED_ONE)
106 #define FIXED_DBL_SCALE ((double) FIXED_ONE)
107 #define FloatToFixed(X) (IROUND((X) * FIXED_SCALE))
108 #define FixedToDouble(X) ((X) * (1.0 / FIXED_DBL_SCALE))
109 #define IntToFixed(I) ((I) << FIXED_SHIFT)
110 #define FixedToInt(X) ((X) >> FIXED_SHIFT)
111 #define FixedToUns(X) (((unsigned int)(X)) >> FIXED_SHIFT)
112 #define FixedCeil(X) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
113 #define FixedFloor(X) ((X) & FIXED_INT_MASK)
114 #define FixedToFloat(X) ((X) * (1.0F / FIXED_SCALE))
115 #define PosFloatToFixed(X) FloatToFixed(X)
116 #define SignedFloatToFixed(X) FloatToFixed(X)
121 * \name Some forward type declarations
124 struct _mesa_HashTable
;
125 struct gl_pixelstore_attrib
;
126 struct gl_texture_format
;
127 struct gl_texture_image
;
128 struct gl_texture_object
;
129 typedef struct __GLcontextRec GLcontext
;
130 typedef struct __GLcontextModesRec GLvisual
;
131 typedef struct gl_framebuffer GLframebuffer
;
137 * Indexes for vertex program attributes.
138 * GL_NV_vertex_program aliases generic attributes over the conventional
139 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
140 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
141 * generic attributes are distinct/separate).
146 VERT_ATTRIB_WEIGHT
= 1,
147 VERT_ATTRIB_NORMAL
= 2,
148 VERT_ATTRIB_COLOR0
= 3,
149 VERT_ATTRIB_COLOR1
= 4,
151 VERT_ATTRIB_COLOR_INDEX
= 6,
152 VERT_ATTRIB_EDGEFLAG
= 7,
153 VERT_ATTRIB_TEX0
= 8,
154 VERT_ATTRIB_TEX1
= 9,
155 VERT_ATTRIB_TEX2
= 10,
156 VERT_ATTRIB_TEX3
= 11,
157 VERT_ATTRIB_TEX4
= 12,
158 VERT_ATTRIB_TEX5
= 13,
159 VERT_ATTRIB_TEX6
= 14,
160 VERT_ATTRIB_TEX7
= 15,
161 VERT_ATTRIB_GENERIC0
= 16,
162 VERT_ATTRIB_GENERIC1
= 17,
163 VERT_ATTRIB_GENERIC2
= 18,
164 VERT_ATTRIB_GENERIC3
= 19,
165 VERT_ATTRIB_GENERIC4
= 20,
166 VERT_ATTRIB_GENERIC5
= 21,
167 VERT_ATTRIB_GENERIC6
= 22,
168 VERT_ATTRIB_GENERIC7
= 23,
169 VERT_ATTRIB_GENERIC8
= 24,
170 VERT_ATTRIB_GENERIC9
= 25,
171 VERT_ATTRIB_GENERIC10
= 26,
172 VERT_ATTRIB_GENERIC11
= 27,
173 VERT_ATTRIB_GENERIC12
= 28,
174 VERT_ATTRIB_GENERIC13
= 29,
175 VERT_ATTRIB_GENERIC14
= 30,
176 VERT_ATTRIB_GENERIC15
= 31,
181 * Bitflags for vertex attributes.
182 * These are used in bitfields in many places.
185 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
186 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
187 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
188 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
189 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
190 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
191 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
192 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
193 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
194 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
195 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
196 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
197 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
198 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
199 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
200 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
201 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
202 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
203 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
204 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
205 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
206 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
207 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
208 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
209 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
210 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
211 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
212 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
213 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
214 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
215 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
216 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
218 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
219 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
224 * Indexes for vertex program result attributes
227 #define VERT_RESULT_HPOS 0
228 #define VERT_RESULT_COL0 1
229 #define VERT_RESULT_COL1 2
230 #define VERT_RESULT_FOGC 3
231 #define VERT_RESULT_TEX0 4
232 #define VERT_RESULT_TEX1 5
233 #define VERT_RESULT_TEX2 6
234 #define VERT_RESULT_TEX3 7
235 #define VERT_RESULT_TEX4 8
236 #define VERT_RESULT_TEX5 9
237 #define VERT_RESULT_TEX6 10
238 #define VERT_RESULT_TEX7 11
239 #define VERT_RESULT_PSIZ 12
240 #define VERT_RESULT_BFC0 13
241 #define VERT_RESULT_BFC1 14
242 #define VERT_RESULT_EDGE 15
243 #define VERT_RESULT_VAR0 16 /**< shader varying */
244 #define VERT_RESULT_MAX (VERT_RESULT_VAR0 + MAX_VARYING)
249 * Indexes for fragment program input attributes.
253 FRAG_ATTRIB_WPOS
= 0,
254 FRAG_ATTRIB_COL0
= 1,
255 FRAG_ATTRIB_COL1
= 2,
256 FRAG_ATTRIB_FOGC
= 3,
257 FRAG_ATTRIB_TEX0
= 4,
258 FRAG_ATTRIB_TEX1
= 5,
259 FRAG_ATTRIB_TEX2
= 6,
260 FRAG_ATTRIB_TEX3
= 7,
261 FRAG_ATTRIB_TEX4
= 8,
262 FRAG_ATTRIB_TEX5
= 9,
263 FRAG_ATTRIB_TEX6
= 10,
264 FRAG_ATTRIB_TEX7
= 11,
265 FRAG_ATTRIB_VAR0
= 12, /**< shader varying */
266 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
270 * Bitflags for fragment program input attributes.
273 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
274 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
275 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
276 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
277 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
278 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
279 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
280 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
281 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
282 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
283 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
284 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
285 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
287 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
288 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
290 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
302 * Fragment program results
306 FRAG_RESULT_COLR
= 0,
307 FRAG_RESULT_COLH
= 1,
308 FRAG_RESULT_DEPR
= 2,
309 FRAG_RESULT_DATA0
= 3,
310 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
315 * Indexes for all renderbuffers
318 BUFFER_FRONT_LEFT
= 0, /* the four standard color buffers */
319 BUFFER_BACK_LEFT
= 1,
320 BUFFER_FRONT_RIGHT
= 2,
321 BUFFER_BACK_RIGHT
= 3,
322 BUFFER_AUX0
= 4, /* optional aux buffer */
329 BUFFER_COLOR0
= 11, /* generic renderbuffers */
341 * Bit flags for all renderbuffers
343 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
344 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
345 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
346 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
347 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
348 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
349 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
350 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
351 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
352 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
353 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
354 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
355 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
356 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
357 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
358 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
359 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
360 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
361 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
364 * Mask of all the color buffer bits (but not accum).
366 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
367 BUFFER_BIT_BACK_LEFT | \
368 BUFFER_BIT_FRONT_RIGHT | \
369 BUFFER_BIT_BACK_RIGHT | \
374 BUFFER_BIT_COLOR0 | \
375 BUFFER_BIT_COLOR1 | \
376 BUFFER_BIT_COLOR2 | \
377 BUFFER_BIT_COLOR3 | \
378 BUFFER_BIT_COLOR4 | \
379 BUFFER_BIT_COLOR5 | \
380 BUFFER_BIT_COLOR6 | \
384 /** The pixel transfer path has three color tables: */
386 #define COLORTABLE_PRECONVOLUTION 0
387 #define COLORTABLE_POSTCONVOLUTION 1
388 #define COLORTABLE_POSTCOLORMATRIX 2
389 #define COLORTABLE_MAX 3
394 * Data structure for color tables
396 struct gl_color_table
398 GLenum InternalFormat
; /**< The user-specified format */
399 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
400 GLuint Size
; /**< number of entries in table */
401 GLfloat
*TableF
; /**< Color table, floating point values */
402 GLubyte
*TableUB
; /**< Color table, ubyte values */
407 GLubyte LuminanceSize
;
408 GLubyte IntensitySize
;
413 * \name Bit flags used for updating material values.
416 #define MAT_ATTRIB_FRONT_AMBIENT 0
417 #define MAT_ATTRIB_BACK_AMBIENT 1
418 #define MAT_ATTRIB_FRONT_DIFFUSE 2
419 #define MAT_ATTRIB_BACK_DIFFUSE 3
420 #define MAT_ATTRIB_FRONT_SPECULAR 4
421 #define MAT_ATTRIB_BACK_SPECULAR 5
422 #define MAT_ATTRIB_FRONT_EMISSION 6
423 #define MAT_ATTRIB_BACK_EMISSION 7
424 #define MAT_ATTRIB_FRONT_SHININESS 8
425 #define MAT_ATTRIB_BACK_SHININESS 9
426 #define MAT_ATTRIB_FRONT_INDEXES 10
427 #define MAT_ATTRIB_BACK_INDEXES 11
428 #define MAT_ATTRIB_MAX 12
430 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
431 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
432 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
433 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
434 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
435 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
437 #define MAT_INDEX_AMBIENT 0
438 #define MAT_INDEX_DIFFUSE 1
439 #define MAT_INDEX_SPECULAR 2
441 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
442 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
443 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
444 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
445 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
446 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
447 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
448 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
449 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
450 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
451 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
452 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
455 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
456 MAT_BIT_FRONT_AMBIENT | \
457 MAT_BIT_FRONT_DIFFUSE | \
458 MAT_BIT_FRONT_SPECULAR | \
459 MAT_BIT_FRONT_SHININESS | \
460 MAT_BIT_FRONT_INDEXES)
462 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
463 MAT_BIT_BACK_AMBIENT | \
464 MAT_BIT_BACK_DIFFUSE | \
465 MAT_BIT_BACK_SPECULAR | \
466 MAT_BIT_BACK_SHININESS | \
467 MAT_BIT_BACK_INDEXES)
469 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
473 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
474 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
477 * Material shininess lookup table.
481 struct gl_shine_tab
*next
, *prev
;
482 GLfloat tab
[SHINE_TABLE_SIZE
+1];
489 * Light source state.
493 struct gl_light
*next
; /**< double linked list with sentinel */
494 struct gl_light
*prev
;
496 GLfloat Ambient
[4]; /**< ambient color */
497 GLfloat Diffuse
[4]; /**< diffuse color */
498 GLfloat Specular
[4]; /**< specular color */
499 GLfloat EyePosition
[4]; /**< position in eye coordinates */
500 GLfloat EyeDirection
[4]; /**< spotlight dir in eye coordinates */
501 GLfloat SpotExponent
;
502 GLfloat SpotCutoff
; /**< in degrees */
503 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
504 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
505 GLfloat ConstantAttenuation
;
506 GLfloat LinearAttenuation
;
507 GLfloat QuadraticAttenuation
;
508 GLboolean Enabled
; /**< On/off flag */
511 * \name Derived fields
514 GLbitfield _Flags
; /**< State */
516 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
517 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
518 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
519 GLfloat _NormDirection
[4]; /**< normalized spotlight direction */
520 GLfloat _VP_inf_spot_attenuation
;
522 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
523 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
524 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
525 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
526 GLfloat _dli
; /**< CI diffuse light intensity */
527 GLfloat _sli
; /**< CI specular light intensity */
537 GLfloat Ambient
[4]; /**< ambient color */
538 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
539 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
540 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
541 * or GL_SEPARATE_SPECULAR_COLOR */
550 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
555 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
557 struct gl_accum_attrib
559 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
564 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
566 struct gl_colorbuffer_attrib
568 GLuint ClearIndex
; /**< Index to use for glClear */
569 GLclampf ClearColor
[4]; /**< Color to use for glClear */
571 GLuint IndexMask
; /**< Color index write mask */
572 GLubyte ColorMask
[4]; /**< Each flag is 0xff or 0x0 */
574 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
577 * \name alpha testing
580 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
581 GLenum AlphaFunc
; /**< Alpha test function */
582 GLclampf AlphaRef
; /**< Alpha reference value */
589 GLboolean BlendEnabled
; /**< Blending enabled flag */
590 GLenum BlendSrcRGB
; /**< Blending source operator */
591 GLenum BlendDstRGB
; /**< Blending destination operator */
592 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
593 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
594 GLenum BlendEquationRGB
; /**< Blending equation */
595 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
596 GLfloat BlendColor
[4]; /**< Blending color */
603 GLenum LogicOp
; /**< Logic operator */
604 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
605 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
606 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
609 GLboolean DitherFlag
; /**< Dither enable flag */
611 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
612 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
617 * Current attribute group (GL_CURRENT_BIT).
619 struct gl_current_attrib
622 * \name Current vertex attributes.
623 * \note Values are valid only after FLUSH_VERTICES has been called.
624 * \note Index and Edgeflag current values are stored as floats in the
625 * SIX and SEVEN attribute slots.
628 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
632 * \name Current raster position attributes (always valid).
633 * \note This set of attributes is very similar to the SWvertex struct.
636 GLfloat RasterPos
[4];
637 GLfloat RasterDistance
;
638 GLfloat RasterColor
[4];
639 GLfloat RasterSecondaryColor
[4];
641 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
642 GLboolean RasterPosValid
;
648 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
650 struct gl_depthbuffer_attrib
652 GLenum Func
; /**< Function for depth buffer compare */
653 GLclampd Clear
; /**< Value to clear depth buffer to */
654 GLboolean Test
; /**< Depth buffering enabled flag */
655 GLboolean Mask
; /**< Depth buffer writable? */
656 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
657 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
662 * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
664 struct gl_enable_attrib
667 GLboolean AutoNormal
;
669 GLbitfield ClipPlanes
;
670 GLboolean ColorMaterial
;
671 GLboolean ColorTable
[COLORTABLE_MAX
];
672 GLboolean Convolution1D
;
673 GLboolean Convolution2D
;
674 GLboolean Separable2D
;
680 GLboolean Light
[MAX_LIGHTS
];
682 GLboolean LineSmooth
;
683 GLboolean LineStipple
;
684 GLboolean IndexLogicOp
;
685 GLboolean ColorLogicOp
;
686 GLboolean Map1Color4
;
688 GLboolean Map1Normal
;
689 GLboolean Map1TextureCoord1
;
690 GLboolean Map1TextureCoord2
;
691 GLboolean Map1TextureCoord3
;
692 GLboolean Map1TextureCoord4
;
693 GLboolean Map1Vertex3
;
694 GLboolean Map1Vertex4
;
695 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
696 GLboolean Map2Color4
;
698 GLboolean Map2Normal
;
699 GLboolean Map2TextureCoord1
;
700 GLboolean Map2TextureCoord2
;
701 GLboolean Map2TextureCoord3
;
702 GLboolean Map2TextureCoord4
;
703 GLboolean Map2Vertex3
;
704 GLboolean Map2Vertex4
;
705 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
708 GLboolean PixelTexture
;
709 GLboolean PointSmooth
;
710 GLboolean PolygonOffsetPoint
;
711 GLboolean PolygonOffsetLine
;
712 GLboolean PolygonOffsetFill
;
713 GLboolean PolygonSmooth
;
714 GLboolean PolygonStipple
;
715 GLboolean RescaleNormals
;
718 GLboolean StencilTwoSide
; /* GL_EXT_stencil_two_side */
719 GLboolean MultisampleEnabled
; /* GL_ARB_multisample */
720 GLboolean SampleAlphaToCoverage
; /* GL_ARB_multisample */
721 GLboolean SampleAlphaToOne
; /* GL_ARB_multisample */
722 GLboolean SampleCoverage
; /* GL_ARB_multisample */
723 GLboolean SampleCoverageInvert
; /* GL_ARB_multisample */
724 GLboolean RasterPositionUnclipped
; /* GL_IBM_rasterpos_clip */
725 GLuint Texture
[MAX_TEXTURE_IMAGE_UNITS
];
726 GLuint TexGen
[MAX_TEXTURE_COORD_UNITS
];
727 /* SGI_texture_color_table */
728 GLboolean TextureColorTable
[MAX_TEXTURE_IMAGE_UNITS
];
729 /* GL_ARB_vertex_program / GL_NV_vertex_program */
730 GLboolean VertexProgram
;
731 GLboolean VertexProgramPointSize
;
732 GLboolean VertexProgramTwoSide
;
733 /* GL_ARB_point_sprite / GL_NV_point_sprite */
734 GLboolean PointSprite
;
735 GLboolean FragmentShaderATI
;
740 * Evaluator attribute group (GL_EVAL_BIT).
742 struct gl_eval_attrib
748 GLboolean Map1Color4
;
750 GLboolean Map1Normal
;
751 GLboolean Map1TextureCoord1
;
752 GLboolean Map1TextureCoord2
;
753 GLboolean Map1TextureCoord3
;
754 GLboolean Map1TextureCoord4
;
755 GLboolean Map1Vertex3
;
756 GLboolean Map1Vertex4
;
757 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
758 GLboolean Map2Color4
;
760 GLboolean Map2Normal
;
761 GLboolean Map2TextureCoord1
;
762 GLboolean Map2TextureCoord2
;
763 GLboolean Map2TextureCoord3
;
764 GLboolean Map2TextureCoord4
;
765 GLboolean Map2Vertex3
;
766 GLboolean Map2Vertex4
;
767 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
768 GLboolean AutoNormal
;
772 * \name Map Grid endpoints and divisions and calculated du values
776 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
777 GLint MapGrid2un
, MapGrid2vn
;
778 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
779 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
785 * Fog attribute group (GL_FOG_BIT).
789 GLboolean Enabled
; /**< Fog enabled flag */
790 GLfloat Color
[4]; /**< Fog color */
791 GLfloat Density
; /**< Density >= 0.0 */
792 GLfloat Start
; /**< Start distance in eye coords */
793 GLfloat End
; /**< End distance in eye coords */
794 GLfloat Index
; /**< Fog index */
795 GLenum Mode
; /**< Fog mode */
796 GLboolean ColorSumEnabled
;
797 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
798 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
803 * Hint attribute group (GL_HINT_BIT).
805 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
807 struct gl_hint_attrib
809 GLenum PerspectiveCorrection
;
812 GLenum PolygonSmooth
;
814 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
815 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
816 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
817 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
822 * Histogram attributes.
824 struct gl_histogram_attrib
826 GLuint Width
; /**< number of table entries */
827 GLint Format
; /**< GL_ALPHA, GL_RGB, etc */
828 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /**< the histogram */
829 GLboolean Sink
; /**< terminate image transfer? */
830 GLubyte RedSize
; /**< Bits per counter */
834 GLubyte LuminanceSize
;
839 * Color Min/max state.
841 struct gl_minmax_attrib
845 GLfloat Min
[4], Max
[4]; /**< RGBA */
850 * Image convolution state.
852 struct gl_convolution_attrib
855 GLenum InternalFormat
;
858 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
866 #define LIGHT_SPOT 0x1
867 #define LIGHT_LOCAL_VIEWER 0x2
868 #define LIGHT_POSITIONAL 0x4
869 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
874 * Lighting attribute group (GL_LIGHT_BIT).
876 struct gl_light_attrib
878 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
879 struct gl_lightmodel Model
; /**< Lighting model */
882 * Must flush FLUSH_VERTICES before referencing:
885 struct gl_material Material
; /**< Includes front & back values */
888 GLboolean Enabled
; /**< Lighting enabled flag */
889 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
890 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
891 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
892 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
893 GLboolean ColorMaterialEnabled
;
894 GLenum ClampVertexColor
;
896 struct gl_light EnabledList
; /**< List sentinel */
899 * Derived state for optimizations:
902 GLboolean _NeedEyeCoords
;
903 GLboolean _NeedVertices
; /**< Use fast shader? */
904 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
905 GLfloat _BaseColor
[2][3];
911 * Line attribute group (GL_LINE_BIT).
913 struct gl_line_attrib
915 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
916 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
917 GLushort StipplePattern
; /**< Stipple pattern */
918 GLint StippleFactor
; /**< Stipple repeat factor */
919 GLfloat Width
; /**< Line width */
924 * Display list attribute group (GL_LIST_BIT).
926 struct gl_list_attrib
933 * Used by device drivers to hook new commands into display lists.
935 struct gl_list_instruction
938 void (*Execute
)( GLcontext
*ctx
, void *data
);
939 void (*Destroy
)( GLcontext
*ctx
, void *data
);
940 void (*Print
)( GLcontext
*ctx
, void *data
);
943 #define MAX_DLIST_EXT_OPCODES 16
946 * Used by device drivers to hook new commands into display lists.
948 struct gl_list_extensions
950 struct gl_list_instruction Opcode
[MAX_DLIST_EXT_OPCODES
];
956 * Multisample attribute group (GL_MULTISAMPLE_BIT).
958 struct gl_multisample_attrib
961 GLboolean SampleAlphaToCoverage
;
962 GLboolean SampleAlphaToOne
;
963 GLboolean SampleCoverage
;
964 GLfloat SampleCoverageValue
;
965 GLboolean SampleCoverageInvert
;
970 * A pixelmap (see glPixelMap)
975 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
976 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
981 * Collection of all pixelmaps
985 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
986 struct gl_pixelmap GtoG
;
987 struct gl_pixelmap BtoB
;
988 struct gl_pixelmap AtoA
;
989 struct gl_pixelmap ItoR
;
990 struct gl_pixelmap ItoG
;
991 struct gl_pixelmap ItoB
;
992 struct gl_pixelmap ItoA
;
993 struct gl_pixelmap ItoI
;
994 struct gl_pixelmap StoS
;
999 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1001 struct gl_pixel_attrib
1003 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1005 /*--- Begin Pixel Transfer State ---*/
1006 /* Fields are in the order in which they're applied... */
1008 /* Scale & Bias (index shift, offset) */
1009 GLfloat RedBias
, RedScale
;
1010 GLfloat GreenBias
, GreenScale
;
1011 GLfloat BlueBias
, BlueScale
;
1012 GLfloat AlphaBias
, AlphaScale
;
1013 GLfloat DepthBias
, DepthScale
;
1014 GLint IndexShift
, IndexOffset
;
1017 /* Note: actual pixel maps are not part of this attrib group */
1018 GLboolean MapColorFlag
;
1019 GLboolean MapStencilFlag
;
1021 /* There are multiple color table stages: */
1022 GLboolean ColorTableEnabled
[COLORTABLE_MAX
];
1023 GLfloat ColorTableScale
[COLORTABLE_MAX
][4]; /**< RGBA */
1024 GLfloat ColorTableBias
[COLORTABLE_MAX
][4]; /**< RGBA */
1026 /* Convolution (GL_EXT_convolution) */
1027 GLboolean Convolution1DEnabled
;
1028 GLboolean Convolution2DEnabled
;
1029 GLboolean Separable2DEnabled
;
1030 GLfloat ConvolutionBorderColor
[3][4];
1031 GLenum ConvolutionBorderMode
[3];
1032 GLfloat ConvolutionFilterScale
[3][4]; /**< RGBA */
1033 GLfloat ConvolutionFilterBias
[3][4]; /**< RGBA */
1034 GLfloat PostConvolutionScale
[4]; /**< RGBA */
1035 GLfloat PostConvolutionBias
[4]; /**< RGBA */
1037 /* Color matrix (GL_SGI_color_matrix) */
1038 /* Note: the color matrix is not part of this attrib group */
1039 GLfloat PostColorMatrixScale
[4]; /**< RGBA */
1040 GLfloat PostColorMatrixBias
[4]; /**< RGBA */
1042 /* Histogram & minmax (GL_EXT_histogram) */
1043 /* Note: histogram and minmax data are not part of this attrib group */
1044 GLboolean HistogramEnabled
;
1045 GLboolean MinMaxEnabled
;
1047 /*--- End Pixel Transfer State ---*/
1050 GLfloat ZoomX
, ZoomY
;
1052 /** GL_SGI_texture_color_table */
1053 GLfloat TextureColorTableScale
[4];
1054 GLfloat TextureColorTableBias
[4];
1059 * Point attribute group (GL_POINT_BIT).
1061 struct gl_point_attrib
1063 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1064 GLfloat Size
; /**< User-specified point size */
1065 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1066 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1067 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1068 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1069 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1070 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite */
1071 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1072 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1077 * Polygon attribute group (GL_POLYGON_BIT).
1079 struct gl_polygon_attrib
1081 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1082 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1083 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1084 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1085 GLboolean CullFlag
; /**< Culling on/off flag */
1086 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1087 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1088 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1089 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1090 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1091 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1092 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1093 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1098 * Scissor attributes (GL_SCISSOR_BIT).
1100 struct gl_scissor_attrib
1102 GLboolean Enabled
; /**< Scissor test enabled? */
1103 GLint X
, Y
; /**< Lower left corner of box */
1104 GLsizei Width
, Height
; /**< Size of box */
1109 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1111 struct gl_stencil_attrib
1113 GLboolean Enabled
; /**< Enabled flag */
1114 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1115 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 1) */
1116 GLboolean _TestTwoSide
;
1117 GLenum Function
[2]; /**< Stencil function */
1118 GLenum FailFunc
[2]; /**< Fail function */
1119 GLenum ZPassFunc
[2]; /**< Depth buffer pass function */
1120 GLenum ZFailFunc
[2]; /**< Depth buffer fail function */
1121 GLint Ref
[2]; /**< Reference value */
1122 GLuint ValueMask
[2]; /**< Value mask */
1123 GLuint WriteMask
[2]; /**< Write mask */
1124 GLuint Clear
; /**< Clear value */
1128 #define NUM_TEXTURE_TARGETS 7 /* 1D, 2D, 3D, CUBE, RECT, 1D_STACK, and 2D_STACK */
1131 * An index for each type of texture object
1134 #define TEXTURE_1D_INDEX 0
1135 #define TEXTURE_2D_INDEX 1
1136 #define TEXTURE_3D_INDEX 2
1137 #define TEXTURE_CUBE_INDEX 3
1138 #define TEXTURE_RECT_INDEX 4
1139 #define TEXTURE_1D_ARRAY_INDEX 5
1140 #define TEXTURE_2D_ARRAY_INDEX 6
1144 * Bit flags for each type of texture object
1145 * Used for Texture.Unit[]._ReallyEnabled flags.
1148 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1149 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1150 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1151 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1152 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1153 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1154 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1159 * TexGenEnabled flags.
1170 * Bit flag versions of the corresponding GL_ constants.
1173 #define TEXGEN_SPHERE_MAP 0x1
1174 #define TEXGEN_OBJ_LINEAR 0x2
1175 #define TEXGEN_EYE_LINEAR 0x4
1176 #define TEXGEN_REFLECTION_MAP_NV 0x8
1177 #define TEXGEN_NORMAL_MAP_NV 0x10
1179 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1180 TEXGEN_REFLECTION_MAP_NV | \
1181 TEXGEN_NORMAL_MAP_NV)
1182 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1183 TEXGEN_REFLECTION_MAP_NV | \
1184 TEXGEN_NORMAL_MAP_NV | \
1189 /* A selection of state flags to make driver and module's lives easier. */
1190 #define ENABLE_TEXGEN0 0x1
1191 #define ENABLE_TEXGEN1 0x2
1192 #define ENABLE_TEXGEN2 0x4
1193 #define ENABLE_TEXGEN3 0x8
1194 #define ENABLE_TEXGEN4 0x10
1195 #define ENABLE_TEXGEN5 0x20
1196 #define ENABLE_TEXGEN6 0x40
1197 #define ENABLE_TEXGEN7 0x80
1199 #define ENABLE_TEXMAT0 0x1 /* Ie. not the identity matrix */
1200 #define ENABLE_TEXMAT1 0x2
1201 #define ENABLE_TEXMAT2 0x4
1202 #define ENABLE_TEXMAT3 0x8
1203 #define ENABLE_TEXMAT4 0x10
1204 #define ENABLE_TEXMAT5 0x20
1205 #define ENABLE_TEXMAT6 0x40
1206 #define ENABLE_TEXMAT7 0x80
1208 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
1209 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
1213 * Texel fetch function prototype. We use texel fetch functions to
1214 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1215 * texture images. These functions help to isolate us from the gritty
1216 * details of all the various texture image encodings.
1218 * \param texImage texture image.
1219 * \param col texel column.
1220 * \param row texel row.
1221 * \param img texel image level/layer.
1222 * \param texelOut output texel (up to 4 GLchans)
1224 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1225 GLint col
, GLint row
, GLint img
,
1229 * As above, but returns floats.
1230 * Used for depth component images and for upcoming signed/float
1233 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1234 GLint col
, GLint row
, GLint img
,
1235 GLfloat
*texelOut
);
1238 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1239 GLint col
, GLint row
, GLint img
,
1244 * This macro defines the (many) parameters to the texstore functions.
1245 * \param dims either 1 or 2 or 3
1246 * \param baseInternalFormat user-specified base internal format
1247 * \param dstFormat destination Mesa texture format
1248 * \param dstAddr destination image address
1249 * \param dstX/Y/Zoffset destination x/y/z offset (ala TexSubImage), in texels
1250 * \param dstRowStride destination image row stride, in bytes
1251 * \param dstImageOffsets offset of each 2D slice within 3D texture, in texels
1252 * \param srcWidth/Height/Depth source image size, in pixels
1253 * \param srcFormat incoming image format
1254 * \param srcType incoming image data type
1255 * \param srcAddr source image address
1256 * \param srcPacking source image packing parameters
1258 #define TEXSTORE_PARAMS \
1259 GLcontext *ctx, GLuint dims, \
1260 GLenum baseInternalFormat, \
1261 const struct gl_texture_format *dstFormat, \
1263 GLint dstXoffset, GLint dstYoffset, GLint dstZoffset, \
1264 GLint dstRowStride, const GLuint *dstImageOffsets, \
1265 GLint srcWidth, GLint srcHeight, GLint srcDepth, \
1266 GLenum srcFormat, GLenum srcType, \
1267 const GLvoid *srcAddr, \
1268 const struct gl_pixelstore_attrib *srcPacking
1273 * Texture image storage function.
1275 typedef GLboolean (*StoreTexImageFunc
)(TEXSTORE_PARAMS
);
1279 * Texture format record
1281 struct gl_texture_format
1283 GLint MesaFormat
; /**< One of the MESA_FORMAT_* values */
1285 GLenum BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1286 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1287 * GL_INTENSITY, GL_COLOR_INDEX or
1288 * GL_DEPTH_COMPONENT.
1290 GLenum DataType
; /**< GL_FLOAT or GL_UNSIGNED_NORMALIZED_ARB */
1293 * Bits per texel component. These are just rough approximations
1294 * for compressed texture formats.
1301 GLubyte LuminanceBits
;
1302 GLubyte IntensityBits
;
1305 GLubyte StencilBits
; /**< GL_EXT_packed_depth_stencil */
1308 GLuint TexelBytes
; /**< Bytes per texel, 0 if compressed format */
1310 StoreTexImageFunc StoreImage
;
1313 * \name Texel fetch function pointers
1316 FetchTexelFuncC FetchTexel1D
;
1317 FetchTexelFuncC FetchTexel2D
;
1318 FetchTexelFuncC FetchTexel3D
;
1319 FetchTexelFuncF FetchTexel1Df
;
1320 FetchTexelFuncF FetchTexel2Df
;
1321 FetchTexelFuncF FetchTexel3Df
;
1324 StoreTexelFunc StoreTexel
;
1329 * Texture image state. Describes the dimensions of a texture image,
1330 * the texel format and pointers to Texel Fetch functions.
1332 struct gl_texture_image
1334 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1335 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1336 * GL_INTENSITY, GL_COLOR_INDEX,
1337 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1338 * only. Used for choosing TexEnv arithmetic.
1340 GLint InternalFormat
; /**< Internal format as given by the user */
1341 GLuint Border
; /**< 0 or 1 */
1342 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1343 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1344 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1345 GLuint Width2
; /**< = Width - 2*Border */
1346 GLuint Height2
; /**< = Height - 2*Border */
1347 GLuint Depth2
; /**< = Depth - 2*Border */
1348 GLuint WidthLog2
; /**< = log2(Width2) */
1349 GLuint HeightLog2
; /**< = log2(Height2) */
1350 GLuint DepthLog2
; /**< = log2(Depth2) */
1351 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1352 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1353 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1354 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1355 GLboolean IsClientData
; /**< Data owned by client? */
1356 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1358 const struct gl_texture_format
*TexFormat
;
1360 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1362 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1363 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1365 GLboolean IsCompressed
; /**< GL_ARB_texture_compression */
1366 GLuint CompressedSize
; /**< GL_ARB_texture_compression */
1368 GLuint RowStride
; /**< Padded width in units of texels */
1369 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1370 each 2D slice in 'Data', in texels */
1371 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1374 * \name For device driver:
1377 void *DriverData
; /**< Arbitrary device driver data */
1383 * Indexes for cube map faces.
1386 #define FACE_POS_X 0
1387 #define FACE_NEG_X 1
1388 #define FACE_POS_Y 2
1389 #define FACE_NEG_Y 3
1390 #define FACE_POS_Z 4
1391 #define FACE_NEG_Z 5
1397 * Texture object state. Contains the array of mipmap images, border color,
1398 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1401 struct gl_texture_object
1403 _glthread_Mutex Mutex
; /**< for thread safety */
1404 GLint RefCount
; /**< reference count */
1405 GLuint Name
; /**< the user-visible texture object ID */
1406 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1407 GLfloat Priority
; /**< in [0,1] */
1408 GLfloat BorderColor
[4]; /**< unclamped */
1409 GLchan _BorderChan
[4]; /**< clamped, as GLchan */
1410 GLenum WrapS
; /**< S-axis texture image wrap mode */
1411 GLenum WrapT
; /**< T-axis texture image wrap mode */
1412 GLenum WrapR
; /**< R-axis texture image wrap mode */
1413 GLenum MinFilter
; /**< minification filter */
1414 GLenum MagFilter
; /**< magnification filter */
1415 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1416 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1417 GLfloat LodBias
; /**< OpenGL 1.4 */
1418 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1419 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1420 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1421 GLboolean CompareFlag
; /**< GL_SGIX_shadow */
1422 GLenum CompareOperator
; /**< GL_SGIX_shadow */
1423 GLfloat ShadowAmbient
; /**< GL_ARB_shadow_ambient */
1424 GLenum CompareMode
; /**< GL_ARB_shadow */
1425 GLenum CompareFunc
; /**< GL_ARB_shadow */
1426 GLenum _Function
; /**< Comparison function derived from
1427 * \c CompareOperator, \c CompareMode, and
1430 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1431 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1432 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1433 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1434 GLboolean _Complete
; /**< Is texture object complete? */
1436 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1437 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1439 /** GL_EXT_paletted_texture */
1440 struct gl_color_table Palette
;
1444 * \name For device driver.
1445 * Note: instead of attaching driver data to this pointer, it's preferable
1446 * to instead use this struct as a base class for your own texture object
1447 * class. Driver->NewTextureObject() can be used to implement the
1450 void *DriverData
; /**< Arbitrary device driver data */
1455 * Texture combine environment state.
1458 * If GL_NV_texture_env_combine4 is ever supported, the arrays in this
1459 * structure will need to be expanded for 4 elements.
1461 struct gl_tex_env_combine_state
1463 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1464 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1465 GLenum SourceRGB
[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1466 GLenum SourceA
[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1467 GLenum OperandRGB
[3]; /**< SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
1468 GLenum OperandA
[3]; /**< SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
1469 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1470 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1471 GLuint _NumArgsRGB
; /**< Number of inputs used for the combine mode. */
1472 GLuint _NumArgsA
; /**< Number of inputs used for the combine mode. */
1477 * Texture unit state. Contains enable flags, texture environment/function/
1478 * combiners, texgen state, pointers to current texture objects and
1479 * post-filter color tables.
1481 struct gl_texture_unit
1483 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1484 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1486 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1487 GLfloat EnvColor
[4];
1488 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1489 /** \name Tex coord generation mode
1490 * Either GL_OBJECT_LINEAR, GL_EYE_LINEAR or GL_SPHERE_MAP. */
1497 GLbitfield _GenBitS
;
1498 GLbitfield _GenBitT
;
1499 GLbitfield _GenBitR
;
1500 GLbitfield _GenBitQ
;
1501 GLbitfield _GenFlags
; /**< bitwise or of _GenBit[STRQ] */
1502 GLfloat ObjectPlaneS
[4];
1503 GLfloat ObjectPlaneT
[4];
1504 GLfloat ObjectPlaneR
[4];
1505 GLfloat ObjectPlaneQ
[4];
1506 GLfloat EyePlaneS
[4];
1507 GLfloat EyePlaneT
[4];
1508 GLfloat EyePlaneR
[4];
1509 GLfloat EyePlaneQ
[4];
1510 GLfloat LodBias
; /**< for biasing mipmap levels */
1513 * \name GL_EXT_texture_env_combine
1515 struct gl_tex_env_combine_state Combine
;
1518 * Derived state based on \c EnvMode and the \c BaseFormat of the
1519 * currently enabled texture.
1521 struct gl_tex_env_combine_state _EnvMode
;
1524 * Currently enabled combiner state. This will point to either
1525 * \c Combine or \c _EnvMode.
1527 struct gl_tex_env_combine_state
*_CurrentCombine
;
1529 struct gl_texture_object
*Current1D
;
1530 struct gl_texture_object
*Current2D
;
1531 struct gl_texture_object
*Current3D
;
1532 struct gl_texture_object
*CurrentCubeMap
; /**< GL_ARB_texture_cube_map */
1533 struct gl_texture_object
*CurrentRect
; /**< GL_NV_texture_rectangle */
1534 struct gl_texture_object
*Current1DArray
; /**< GL_MESA_texture_array */
1535 struct gl_texture_object
*Current2DArray
; /**< GL_MESA_texture_array */
1537 struct gl_texture_object
*_Current
; /**< Points to really enabled tex obj */
1539 /** GL_SGI_texture_color_table */
1541 struct gl_color_table ColorTable
;
1542 struct gl_color_table ProxyColorTable
;
1543 GLboolean ColorTableEnabled
;
1547 struct texenvprog_cache_item
{
1550 struct gl_fragment_program
*data
;
1551 struct texenvprog_cache_item
*next
;
1554 struct texenvprog_cache
{
1555 struct texenvprog_cache_item
**items
;
1556 GLuint size
, n_items
;
1561 * Texture attribute group (GL_TEXTURE_BIT).
1563 struct gl_texture_attrib
1569 GLuint CurrentUnit
; /**< Active texture unit */
1570 GLbitfield _EnabledUnits
; /**< one bit set for each really-enabled unit */
1571 GLbitfield _EnabledCoordUnits
; /**< one bit per enabled coordinate unit */
1572 GLbitfield _GenFlags
; /**< for texgen */
1573 GLbitfield _TexGenEnabled
;
1574 GLbitfield _TexMatEnabled
;
1577 struct gl_texture_unit Unit
[MAX_TEXTURE_UNITS
];
1579 /** Proxy texture objects */
1580 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1582 /** GL_EXT_shared_texture_palette */
1583 GLboolean SharedPalette
;
1584 struct gl_color_table Palette
;
1586 /** Cached texenv fragment programs */
1587 struct texenvprog_cache env_fp_cache
;
1592 * Transformation attribute group (GL_TRANSFORM_BIT).
1594 struct gl_transform_attrib
1596 GLenum MatrixMode
; /**< Matrix mode */
1597 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1598 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1599 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1600 GLboolean Normalize
; /**< Normalize all normals? */
1601 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1602 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1604 GLboolean CullVertexFlag
; /**< True if GL_CULL_VERTEX_EXT is enabled */
1605 GLfloat CullEyePos
[4];
1606 GLfloat CullObjPos
[4];
1611 * Viewport attribute group (GL_VIEWPORT_BIT).
1613 struct gl_viewport_attrib
1615 GLint X
, Y
; /**< position */
1616 GLsizei Width
, Height
; /**< size */
1617 GLfloat Near
, Far
; /**< Depth buffer range */
1618 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1623 * Node for the attribute stack.
1625 struct gl_attrib_node
1629 struct gl_attrib_node
*next
;
1634 * GL_ARB_vertex/pixel_buffer_object buffer object
1636 struct gl_buffer_object
1642 GLvoid
*Pointer
; /**< Only valid while buffer is mapped */
1643 GLsizeiptrARB Size
; /**< Size of storage in bytes */
1644 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1645 GLboolean OnCard
; /**< Is buffer in VRAM? (hardware drivers) */
1651 * Client pixel packing/unpacking attributes
1653 struct gl_pixelstore_attrib
1659 GLint ImageHeight
; /**< for GL_EXT_texture3D */
1660 GLint SkipImages
; /**< for GL_EXT_texture3D */
1661 GLboolean SwapBytes
;
1663 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1664 GLboolean Invert
; /**< GL_MESA_pack_invert */
1665 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1671 * Client vertex array attributes
1673 struct gl_client_array
1675 GLint Size
; /**< components per element (1,2,3,4) */
1676 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1677 GLsizei Stride
; /**< user-specified stride */
1678 GLsizei StrideB
; /**< actual stride in bytes */
1679 const GLubyte
*Ptr
; /**< Points to array data */
1680 GLboolean Enabled
; /**< Enabled flag is a boolean */
1681 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1683 /**< GL_ARB_vertex_buffer_object */
1684 struct gl_buffer_object
*BufferObj
;
1690 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1691 * extension, but a nice encapsulation in any case.
1693 struct gl_array_object
1695 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1698 /** Conventional vertex arrays */
1700 struct gl_client_array Vertex
;
1701 struct gl_client_array Normal
;
1702 struct gl_client_array Color
;
1703 struct gl_client_array SecondaryColor
;
1704 struct gl_client_array FogCoord
;
1705 struct gl_client_array Index
;
1706 struct gl_client_array EdgeFlag
;
1707 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1710 /** Generic arrays for vertex programs/shaders */
1711 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1713 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1714 GLbitfield _Enabled
;
1719 * Vertex array state
1721 struct gl_array_attrib
1723 struct gl_array_object
*ArrayObj
;
1724 struct gl_array_object
*DefaultArrayObj
;
1726 GLint ActiveTexture
; /**< Client Active Texture */
1727 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1728 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1730 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1732 #if FEATURE_ARB_vertex_buffer_object
1733 struct gl_buffer_object
*NullBufferObj
;
1734 struct gl_buffer_object
*ArrayBufferObj
;
1735 struct gl_buffer_object
*ElementArrayBufferObj
;
1737 GLuint _MaxElement
; /* Min of all enabled array's maxes */
1742 * Feedback buffer state
1747 GLbitfield _Mask
; /* FB_* bits */
1755 * Selection buffer state
1759 GLuint
*Buffer
; /**< selection buffer */
1760 GLuint BufferSize
; /**< size of the selection buffer */
1761 GLuint BufferCount
; /**< number of values in the selection buffer */
1762 GLuint Hits
; /**< number of records in the selection buffer */
1763 GLuint NameStackDepth
; /**< name stack depth */
1764 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1765 GLboolean HitFlag
; /**< hit flag */
1766 GLfloat HitMinZ
; /**< minimum hit depth */
1767 GLfloat HitMaxZ
; /**< maximum hit depth */
1772 * 1-D Evaluator control points
1776 GLuint Order
; /**< Number of control points */
1777 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1778 GLfloat
*Points
; /**< Points to contiguous control points */
1783 * 2-D Evaluator control points
1787 GLuint Uorder
; /**< Number of control points in U dimension */
1788 GLuint Vorder
; /**< Number of control points in V dimension */
1791 GLfloat
*Points
; /**< Points to contiguous control points */
1796 * All evaluator control point state
1798 struct gl_evaluators
1804 struct gl_1d_map Map1Vertex3
;
1805 struct gl_1d_map Map1Vertex4
;
1806 struct gl_1d_map Map1Index
;
1807 struct gl_1d_map Map1Color4
;
1808 struct gl_1d_map Map1Normal
;
1809 struct gl_1d_map Map1Texture1
;
1810 struct gl_1d_map Map1Texture2
;
1811 struct gl_1d_map Map1Texture3
;
1812 struct gl_1d_map Map1Texture4
;
1813 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1820 struct gl_2d_map Map2Vertex3
;
1821 struct gl_2d_map Map2Vertex4
;
1822 struct gl_2d_map Map2Index
;
1823 struct gl_2d_map Map2Color4
;
1824 struct gl_2d_map Map2Normal
;
1825 struct gl_2d_map Map2Texture1
;
1826 struct gl_2d_map Map2Texture2
;
1827 struct gl_2d_map Map2Texture3
;
1828 struct gl_2d_map Map2Texture4
;
1829 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1835 * Names of the various vertex/fragment program register files, etc.
1837 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1838 * All values should fit in a 4-bit field.
1840 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1841 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1842 * be "uniform" variables since they can only be set outside glBegin/End.
1843 * They're also all stored in the same Parameters array.
1847 PROGRAM_TEMPORARY
= 0, /**< machine->Temporary[] */
1848 PROGRAM_LOCAL_PARAM
= 1, /**< gl_program->LocalParams[] */
1849 PROGRAM_ENV_PARAM
= 2, /**< gl_program->Parameters[] */
1850 PROGRAM_STATE_VAR
= 3, /**< gl_program->Parameters[] */
1851 PROGRAM_INPUT
= 4, /**< machine->Inputs[] */
1852 PROGRAM_OUTPUT
= 5, /**< machine->Outputs[] */
1853 PROGRAM_NAMED_PARAM
= 6, /**< gl_program->Parameters[] */
1854 PROGRAM_CONSTANT
= 7, /**< gl_program->Parameters[] */
1855 PROGRAM_UNIFORM
= 8, /**< gl_program->Parameters[] */
1856 PROGRAM_VARYING
= 9, /**< machine->Inputs[]/Outputs[] */
1857 PROGRAM_WRITE_ONLY
= 10, /**< A dummy, write-only register */
1858 PROGRAM_ADDRESS
= 11, /**< machine->AddressReg */
1859 PROGRAM_SAMPLER
= 12, /**< for shader samplers, compile-time only */
1860 PROGRAM_UNDEFINED
= 13, /**< Invalid value */
1865 /** Vertex and fragment instructions */
1866 struct prog_instruction
;
1867 struct gl_program_parameter_list
;
1871 * Base class for any kind of program object
1876 GLubyte
*String
; /**< Null-terminated program text */
1878 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1879 GLenum Format
; /**< String encoding format */
1882 struct prog_instruction
*Instructions
;
1884 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1885 GLbitfield OutputsWritten
; /**< Bitmask of which output regs are written to */
1886 GLbitfield TexturesUsed
[MAX_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1887 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1889 /** Named parameters, constants, etc. from program text */
1890 struct gl_program_parameter_list
*Parameters
;
1891 /** Numbered local parameters */
1892 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1894 /** Vertex/fragment shader varying vars */
1895 struct gl_program_parameter_list
*Varying
;
1896 /** Vertex program user-defined attributes */
1897 struct gl_program_parameter_list
*Attributes
;
1899 /** Logical counts */
1901 GLuint NumInstructions
;
1902 GLuint NumTemporaries
;
1903 GLuint NumParameters
;
1904 GLuint NumAttributes
;
1905 GLuint NumAddressRegs
;
1906 GLuint NumAluInstructions
;
1907 GLuint NumTexInstructions
;
1908 GLuint NumTexIndirections
;
1910 /** Native, actual h/w counts */
1912 GLuint NumNativeInstructions
;
1913 GLuint NumNativeTemporaries
;
1914 GLuint NumNativeParameters
;
1915 GLuint NumNativeAttributes
;
1916 GLuint NumNativeAddressRegs
;
1917 GLuint NumNativeAluInstructions
;
1918 GLuint NumNativeTexInstructions
;
1919 GLuint NumNativeTexIndirections
;
1924 /** Vertex program object */
1925 struct gl_vertex_program
1927 struct gl_program Base
; /**< base class */
1928 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1929 GLboolean IsPositionInvariant
;
1930 void *TnlData
; /**< should probably use Base.DriverData */
1934 /** Fragment program object */
1935 struct gl_fragment_program
1937 struct gl_program Base
; /**< base class */
1944 * State common to vertex and fragment programs.
1946 struct gl_program_state
1948 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1949 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1954 * Context state for vertex programs.
1956 struct gl_vertex_program_state
1958 GLboolean Enabled
; /**< GL_VERTEX_PROGRAM_ARB/NV */
1959 GLboolean _Enabled
; /**< Enabled and valid program? */
1960 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1961 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1962 struct gl_vertex_program
*Current
; /**< user-bound vertex program */
1964 /** Currently enabled and valid program (including internal programs
1965 * and compiled shader programs).
1967 struct gl_vertex_program
*_Current
;
1969 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1971 /* For GL_NV_vertex_program only: */
1972 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1973 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1975 /** Should fixed-function T&L be implemented with a vertex prog? */
1976 GLboolean _MaintainTnlProgram
;
1978 /** Program to emulate fixed-function T&L (see above) */
1979 struct gl_vertex_program
*_TnlProgram
;
1981 #if FEATURE_MESA_program_debug
1982 GLprogramcallbackMESA Callback
;
1983 GLvoid
*CallbackData
;
1984 GLboolean CallbackEnabled
;
1985 GLuint CurrentPosition
;
1991 * Context state for fragment programs.
1993 struct gl_fragment_program_state
1995 GLboolean Enabled
; /**< User-set fragment program enable flag */
1996 GLboolean _Enabled
; /**< Fragment program enabled and valid? */
1998 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2000 /** Currently enabled and valid program (including internal programs
2001 * and compiled shader programs).
2003 struct gl_fragment_program
*_Current
;
2005 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2007 /** Should fixed-function texturing be implemented with a fragment prog? */
2008 GLboolean _MaintainTexEnvProgram
;
2009 GLboolean _UseTexEnvProgram
;
2011 /** Program to emulate fixed-function texture env/combine (see above) */
2012 struct gl_fragment_program
*_TexEnvProgram
;
2014 #if FEATURE_MESA_program_debug
2015 GLprogramcallbackMESA Callback
;
2016 GLvoid
*CallbackData
;
2017 GLboolean CallbackEnabled
;
2018 GLuint CurrentPosition
;
2024 * ATI_fragment_shader runtime state
2026 #define ATI_FS_INPUT_PRIMARY 0
2027 #define ATI_FS_INPUT_SECONDARY 1
2029 struct atifs_instruction
;
2030 struct atifs_setupinst
;
2033 * ATI fragment shader
2035 struct ati_fragment_shader
2039 struct atifs_instruction
*Instructions
[2];
2040 struct atifs_setupinst
*SetupInst
[2];
2041 GLfloat Constants
[8][4];
2042 GLbitfield LocalConstDef
; /** Indicates which constants have been set */
2043 GLubyte numArithInstr
[2];
2044 GLubyte regsAssigned
[2];
2045 GLubyte NumPasses
; /** 1 or 2 */
2047 GLubyte last_optype
;
2048 GLboolean interpinp1
;
2054 * Context state for GL_ATI_fragment_shader
2056 struct gl_ati_fragment_shader_state
2059 GLboolean _Enabled
; /** enabled and valid shader? */
2060 GLboolean Compiling
;
2061 GLfloat GlobalConstants
[8][4];
2062 struct ati_fragment_shader
*Current
;
2067 * Occlusion/timer query object.
2069 struct gl_query_object
2072 GLuint64EXT Result
; /* the counter */
2073 GLboolean Active
; /* inside Begin/EndQuery */
2074 GLboolean Ready
; /* result is ready */
2079 * Context state for query objects.
2081 struct gl_query_state
2083 struct _mesa_HashTable
*QueryObjects
;
2084 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2085 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2091 * A GLSL shader object.
2095 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER (first field!) */
2096 GLuint Name
; /**< AKA the handle */
2097 GLint RefCount
; /**< Reference count */
2098 GLboolean DeletePending
;
2100 const GLchar
*Source
; /**< Source code string */
2101 GLboolean CompileStatus
;
2102 GLuint NumPrograms
; /**< size of Programs[] array */
2103 struct gl_program
**Programs
; /**< Post-compile assembly code */
2109 * A GLSL program object. Basically a linked collection of "shaders".
2111 struct gl_shader_program
2113 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2114 GLuint Name
; /**< aka handle or ID */
2115 GLint RefCount
; /**< Reference count */
2116 GLboolean DeletePending
;
2118 GLuint NumShaders
; /**< number of attached shaders */
2119 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2121 /* post-link info: */
2122 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2123 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2124 struct gl_program_parameter_list
*Uniforms
; /**< Plus constants, etc */
2125 struct gl_program_parameter_list
*Varying
;
2126 struct gl_program_parameter_list
*Attributes
; /**< Vertex attributes */
2127 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2128 GLboolean Validated
;
2134 * Context state for GLSL vertex/fragment shaders.
2136 struct gl_shader_state
2138 struct gl_shader_program
*CurrentProgram
; /**< The user-bound program */
2139 /** Driver-selectable options: */
2140 GLboolean EmitHighLevelInstructions
; /**< IF/ELSE/ENDIF vs. BRA, etc. */
2141 GLboolean EmitCondCodes
; /**< Use condition codes? */
2142 GLboolean EmitComments
; /**< Annotated instructions */
2148 * State which can be shared by multiple contexts:
2150 struct gl_shared_state
2152 _glthread_Mutex Mutex
; /**< for thread safety */
2153 GLint RefCount
; /**< Reference count */
2154 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2155 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2158 * \name Default texture objects (shared by all multi-texture units)
2161 struct gl_texture_object
*Default1D
;
2162 struct gl_texture_object
*Default2D
;
2163 struct gl_texture_object
*Default3D
;
2164 struct gl_texture_object
*DefaultCubeMap
;
2165 struct gl_texture_object
*DefaultRect
;
2166 struct gl_texture_object
*Default1DArray
;
2167 struct gl_texture_object
*Default2DArray
;
2171 * \name Thread safety and statechange notification for texture
2174 * \todo Improve the granularity of locking.
2177 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2178 GLuint TextureStateStamp
; /**< state notification for shared tex */
2183 * \name Vertex/fragment programs
2186 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2187 #if FEATURE_ARB_vertex_program
2188 struct gl_program
*DefaultVertexProgram
;
2190 #if FEATURE_ARB_fragment_program
2191 struct gl_program
*DefaultFragmentProgram
;
2195 #if FEATURE_ATI_fragment_shader
2196 struct _mesa_HashTable
*ATIShaders
;
2197 struct ati_fragment_shader
*DefaultFragmentShader
;
2200 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
2201 struct _mesa_HashTable
*BufferObjects
;
2204 #if FEATURE_ARB_shader_objects
2205 /** Table of both gl_shader and gl_shader_program objects */
2206 struct _mesa_HashTable
*ShaderObjects
;
2209 #if FEATURE_EXT_framebuffer_object
2210 struct _mesa_HashTable
*RenderBuffers
;
2211 struct _mesa_HashTable
*FrameBuffers
;
2214 /** Objects associated with the GL_APPLE_vertex_array_object extension. */
2215 struct _mesa_HashTable
*ArrayObjects
;
2217 void *DriverData
; /**< Device driver shared state */
2224 * A renderbuffer stores colors or depth values or stencil values.
2225 * A framebuffer object will have a collection of these.
2226 * Data are read/written to the buffer with a handful of Get/Put functions.
2228 * Instances of this object are allocated with the Driver's NewRenderbuffer
2229 * hook. Drivers will likely wrap this class inside a driver-specific
2230 * class to simulate inheritance.
2232 struct gl_renderbuffer
2234 #define RB_MAGIC 0xaabbccdd
2235 int Magic
; /** XXX TEMPORARY DEBUG INFO */
2236 _glthread_Mutex Mutex
; /**< for thread safety */
2237 GLuint ClassID
; /**< Useful for drivers */
2240 GLuint Width
, Height
;
2241 GLenum InternalFormat
; /**< The user-specified format */
2242 GLenum _ActualFormat
; /**< The driver-chosen format */
2243 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2244 GL_STENCIL_INDEX. */
2245 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2246 GLubyte RedBits
; /**< Bits of red per pixel */
2252 GLubyte StencilBits
;
2253 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2255 /* Used to wrap one renderbuffer around another: */
2256 struct gl_renderbuffer
*Wrapped
;
2258 /* Delete this renderbuffer */
2259 void (*Delete
)(struct gl_renderbuffer
*rb
);
2261 /* Allocate new storage for this renderbuffer */
2262 GLboolean (*AllocStorage
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2263 GLenum internalFormat
,
2264 GLuint width
, GLuint height
);
2266 /* Lock/Unlock are called before/after calling the Get/Put functions.
2267 * Not sure this is the right place for these yet.
2268 void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2269 void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2272 /* Return a pointer to the element/pixel at (x,y).
2273 * Should return NULL if the buffer memory can't be directly addressed.
2275 void *(*GetPointer
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2278 /* Get/Read a row of values.
2279 * The values will be of format _BaseFormat and type DataType.
2281 void (*GetRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2282 GLint x
, GLint y
, void *values
);
2284 /* Get/Read values at arbitrary locations.
2285 * The values will be of format _BaseFormat and type DataType.
2287 void (*GetValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2288 const GLint x
[], const GLint y
[], void *values
);
2290 /* Put/Write a row of values.
2291 * The values will be of format _BaseFormat and type DataType.
2293 void (*PutRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2294 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2296 /* Put/Write a row of RGB values. This is a special-case routine that's
2297 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2298 * a common case for glDrawPixels and some triangle routines.
2299 * The values will be of format GL_RGB and type DataType.
2301 void (*PutRowRGB
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2302 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2305 /* Put/Write a row of identical values.
2306 * The values will be of format _BaseFormat and type DataType.
2308 void (*PutMonoRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2309 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2311 /* Put/Write values at arbitrary locations.
2312 * The values will be of format _BaseFormat and type DataType.
2314 void (*PutValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2315 const GLint x
[], const GLint y
[], const void *values
,
2316 const GLubyte
*mask
);
2317 /* Put/Write identical values at arbitrary locations.
2318 * The values will be of format _BaseFormat and type DataType.
2320 void (*PutMonoValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2321 GLuint count
, const GLint x
[], const GLint y
[],
2322 const void *value
, const GLubyte
*mask
);
2327 * A renderbuffer attachment point points to either a texture object
2328 * (and specifies a mipmap level, cube face or 3D texture slice) or
2329 * points to a renderbuffer.
2331 struct gl_renderbuffer_attachment
2333 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2337 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2338 * application supplied renderbuffer object.
2340 struct gl_renderbuffer
*Renderbuffer
;
2343 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2344 * supplied texture object.
2346 struct gl_texture_object
*Texture
;
2347 GLuint TextureLevel
; /**< Attached mipmap level. */
2348 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2349 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2350 * and 2D array textures */
2355 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2356 * In C++ terms, think of this as a base class from which device drivers
2357 * will make derived classes.
2359 struct gl_framebuffer
2361 _glthread_Mutex Mutex
; /**< for thread safety */
2362 GLuint Name
; /* if zero, this is a window system framebuffer */
2364 GLboolean DeletePending
;
2366 GLvisual Visual
; /**< The framebuffer's visual.
2367 Immutable if this is a window system buffer.
2368 Computed from attachments if user-made FBO. */
2370 GLboolean Initialized
;
2372 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2374 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2376 GLint _Xmin
, _Xmax
; /**< inclusive */
2377 GLint _Ymin
, _Ymax
; /**< exclusive */
2380 /** \name Derived Z buffer stuff */
2382 GLuint _DepthMax
; /**< Max depth buffer value */
2383 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2384 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2387 GLenum _Status
; /* One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2389 /* Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2390 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2392 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2393 * attribute group and GL_PIXEL attribute group, respectively.
2395 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2396 GLenum ColorReadBuffer
;
2398 /** Computed from ColorDraw/ReadBuffer above */
2399 GLuint _NumColorDrawBuffers
;
2400 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2401 GLint _ColorReadBufferIndex
; /* -1 = None */
2402 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2403 struct gl_renderbuffer
*_ColorReadBuffer
;
2405 /** The Actual depth/stencil buffers to use. May be wrappers around the
2406 * depth/stencil buffers attached above. */
2407 struct gl_renderbuffer
*_DepthBuffer
;
2408 struct gl_renderbuffer
*_StencilBuffer
;
2410 /** Delete this framebuffer */
2411 void (*Delete
)(struct gl_framebuffer
*fb
);
2416 * Limits for vertex and fragment programs.
2418 struct gl_program_constants
2420 /* logical limits */
2421 GLuint MaxInstructions
;
2422 GLuint MaxAluInstructions
; /* fragment programs only, for now */
2423 GLuint MaxTexInstructions
; /* fragment programs only, for now */
2424 GLuint MaxTexIndirections
; /* fragment programs only, for now */
2427 GLuint MaxAddressRegs
; /* vertex program only, for now */
2428 GLuint MaxParameters
;
2429 GLuint MaxLocalParams
;
2430 GLuint MaxEnvParams
;
2431 /* native/hardware limits */
2432 GLuint MaxNativeInstructions
;
2433 GLuint MaxNativeAluInstructions
; /* fragment programs only, for now */
2434 GLuint MaxNativeTexInstructions
; /* fragment programs only, for now */
2435 GLuint MaxNativeTexIndirections
; /* fragment programs only, for now */
2436 GLuint MaxNativeAttribs
;
2437 GLuint MaxNativeTemps
;
2438 GLuint MaxNativeAddressRegs
; /* vertex program only, for now */
2439 GLuint MaxNativeParameters
;
2441 GLuint MaxUniformComponents
;
2446 * Constants which may be overridden by device driver during context creation
2447 * but are never changed after that.
2451 GLint MaxTextureLevels
; /**< Maximum number of allowed mipmap levels. */
2452 GLint Max3DTextureLevels
; /**< Maximum number of allowed mipmap levels for 3D texture targets. */
2453 GLint MaxCubeTextureLevels
; /**< Maximum number of allowed mipmap levels for GL_ARB_texture_cube_map */
2454 GLint MaxArrayTextureLayers
; /**< Maximum number of layers in an array texture. */
2455 GLint MaxTextureRectSize
; /* GL_NV_texture_rectangle */
2456 GLuint MaxTextureCoordUnits
;
2457 GLuint MaxTextureImageUnits
;
2458 GLuint MaxTextureUnits
; /* = MIN(CoordUnits, ImageUnits) */
2459 GLfloat MaxTextureMaxAnisotropy
; /* GL_EXT_texture_filter_anisotropic */
2460 GLfloat MaxTextureLodBias
; /* GL_EXT_texture_lod_bias */
2461 GLuint MaxArrayLockSize
;
2463 GLfloat MinPointSize
, MaxPointSize
; /* aliased */
2464 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /* antialiased */
2465 GLfloat PointSizeGranularity
;
2466 GLfloat MinLineWidth
, MaxLineWidth
; /* aliased */
2467 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /* antialiased */
2468 GLfloat LineWidthGranularity
;
2469 GLuint MaxColorTableSize
;
2470 GLuint MaxConvolutionWidth
;
2471 GLuint MaxConvolutionHeight
;
2472 GLuint MaxClipPlanes
;
2474 GLfloat MaxShininess
; /* GL_NV_light_max_exponent */
2475 GLfloat MaxSpotExponent
; /* GL_NV_light_max_exponent */
2476 GLuint MaxViewportWidth
, MaxViewportHeight
;
2477 struct gl_program_constants VertexProgram
; /* GL_ARB_vertex_program */
2478 struct gl_program_constants FragmentProgram
; /* GL_ARB_fragment_program */
2479 /* shared by vertex and fragment program: */
2480 GLuint MaxProgramMatrices
;
2481 GLuint MaxProgramMatrixStackDepth
;
2482 /* vertex array / buffer object bounds checking */
2483 GLboolean CheckArrayBounds
;
2484 /* GL_ARB_draw_buffers */
2485 GLuint MaxDrawBuffers
;
2486 /* GL_OES_read_format */
2487 GLenum ColorReadFormat
;
2488 GLenum ColorReadType
;
2489 /* GL_EXT_framebuffer_object */
2490 GLuint MaxColorAttachments
;
2491 GLuint MaxRenderbufferSize
;
2492 /* GL_ARB_vertex_shader */
2493 GLuint MaxVertexTextureImageUnits
;
2499 * Enable flag for each OpenGL extension. Different device drivers will
2500 * enable different extensions at runtime.
2502 struct gl_extensions
2505 * \name Flags to quickly test if certain extensions are available.
2507 * Not every extension needs to have such a flag, but it's encouraged.
2510 GLboolean dummy
; /* don't remove this! */
2511 GLboolean ARB_depth_texture
;
2512 GLboolean ARB_draw_buffers
;
2513 GLboolean ARB_fragment_program
;
2514 GLboolean ARB_fragment_program_shadow
;
2515 GLboolean ARB_fragment_shader
;
2516 GLboolean ARB_half_float_pixel
;
2517 GLboolean ARB_imaging
;
2518 GLboolean ARB_multisample
;
2519 GLboolean ARB_multitexture
;
2520 GLboolean ARB_occlusion_query
;
2521 GLboolean ARB_point_sprite
;
2522 GLboolean ARB_shader_objects
;
2523 GLboolean ARB_shading_language_100
;
2524 GLboolean ARB_shading_language_120
;
2525 GLboolean ARB_shadow
;
2526 GLboolean ARB_texture_border_clamp
;
2527 GLboolean ARB_texture_compression
;
2528 GLboolean ARB_texture_cube_map
;
2529 GLboolean ARB_texture_env_combine
;
2530 GLboolean ARB_texture_env_crossbar
;
2531 GLboolean ARB_texture_env_dot3
;
2532 GLboolean ARB_texture_float
;
2533 GLboolean ARB_texture_mirrored_repeat
;
2534 GLboolean ARB_texture_non_power_of_two
;
2535 GLboolean ARB_transpose_matrix
;
2536 GLboolean ARB_vertex_buffer_object
;
2537 GLboolean ARB_vertex_program
;
2538 GLboolean ARB_vertex_shader
;
2539 GLboolean ARB_window_pos
;
2542 GLboolean EXT_blend_color
;
2543 GLboolean EXT_blend_equation_separate
;
2544 GLboolean EXT_blend_func_separate
;
2545 GLboolean EXT_blend_logic_op
;
2546 GLboolean EXT_blend_minmax
;
2547 GLboolean EXT_blend_subtract
;
2548 GLboolean EXT_clip_volume_hint
;
2549 GLboolean EXT_cull_vertex
;
2550 GLboolean EXT_convolution
;
2551 GLboolean EXT_compiled_vertex_array
;
2552 GLboolean EXT_copy_texture
;
2553 GLboolean EXT_depth_bounds_test
;
2554 GLboolean EXT_draw_range_elements
;
2555 GLboolean EXT_framebuffer_object
;
2556 GLboolean EXT_fog_coord
;
2557 GLboolean EXT_framebuffer_blit
;
2558 GLboolean EXT_gpu_program_parameters
;
2559 GLboolean EXT_histogram
;
2560 GLboolean EXT_multi_draw_arrays
;
2561 GLboolean EXT_paletted_texture
;
2562 GLboolean EXT_packed_depth_stencil
;
2563 GLboolean EXT_packed_pixels
;
2564 GLboolean EXT_pixel_buffer_object
;
2565 GLboolean EXT_point_parameters
;
2566 GLboolean EXT_polygon_offset
;
2567 GLboolean EXT_rescale_normal
;
2568 GLboolean EXT_shadow_funcs
;
2569 GLboolean EXT_secondary_color
;
2570 GLboolean EXT_separate_specular_color
;
2571 GLboolean EXT_shared_texture_palette
;
2572 GLboolean EXT_stencil_wrap
;
2573 GLboolean EXT_stencil_two_side
;
2574 GLboolean EXT_subtexture
;
2575 GLboolean EXT_texture
;
2576 GLboolean EXT_texture_object
;
2577 GLboolean EXT_texture3D
;
2578 GLboolean EXT_texture_compression_s3tc
;
2579 GLboolean EXT_texture_env_add
;
2580 GLboolean EXT_texture_env_combine
;
2581 GLboolean EXT_texture_env_dot3
;
2582 GLboolean EXT_texture_filter_anisotropic
;
2583 GLboolean EXT_texture_lod_bias
;
2584 GLboolean EXT_texture_mirror_clamp
;
2585 GLboolean EXT_texture_sRGB
;
2586 GLboolean EXT_timer_query
;
2587 GLboolean EXT_vertex_array
;
2588 GLboolean EXT_vertex_array_set
;
2589 /* vendor extensions */
2590 GLboolean APPLE_client_storage
;
2591 GLboolean APPLE_packed_pixels
;
2592 GLboolean APPLE_vertex_array_object
;
2593 GLboolean ATI_texture_mirror_once
;
2594 GLboolean ATI_texture_env_combine3
;
2595 GLboolean ATI_fragment_shader
;
2596 GLboolean ATI_separate_stencil
;
2597 GLboolean IBM_rasterpos_clip
;
2598 GLboolean IBM_multimode_draw_arrays
;
2599 GLboolean MESA_pack_invert
;
2600 GLboolean MESA_packed_depth_stencil
;
2601 GLboolean MESA_program_debug
;
2602 GLboolean MESA_resize_buffers
;
2603 GLboolean MESA_ycbcr_texture
;
2604 GLboolean MESA_texture_array
;
2605 GLboolean NV_blend_square
;
2606 GLboolean NV_fragment_program
;
2607 GLboolean NV_light_max_exponent
;
2608 GLboolean NV_point_sprite
;
2609 GLboolean NV_texgen_reflection
;
2610 GLboolean NV_texture_rectangle
;
2611 GLboolean NV_vertex_program
;
2612 GLboolean NV_vertex_program1_1
;
2613 GLboolean OES_read_format
;
2614 GLboolean SGI_color_matrix
;
2615 GLboolean SGI_color_table
;
2616 GLboolean SGI_texture_color_table
;
2617 GLboolean SGIS_generate_mipmap
;
2618 GLboolean SGIS_texture_edge_clamp
;
2619 GLboolean SGIS_texture_lod
;
2620 GLboolean SGIX_depth_texture
;
2621 GLboolean SGIX_shadow
;
2622 GLboolean SGIX_shadow_ambient
; /* or GL_ARB_shadow_ambient */
2623 GLboolean TDFX_texture_compression_FXT1
;
2626 /* The extension string */
2627 const GLubyte
*String
;
2632 * A stack of matrices (projection, modelview, color, texture, etc).
2634 struct gl_matrix_stack
2636 GLmatrix
*Top
; /**< points into Stack */
2637 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2638 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2639 GLuint MaxDepth
; /**< size of Stack[] array */
2640 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2645 * \name Bits for image transfer operations
2647 * \sa __GLcontextRec::ImageTransferState.
2650 #define IMAGE_SCALE_BIAS_BIT 0x1
2651 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2652 #define IMAGE_MAP_COLOR_BIT 0x4
2653 #define IMAGE_COLOR_TABLE_BIT 0x8
2654 #define IMAGE_CONVOLUTION_BIT 0x10
2655 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2656 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2657 #define IMAGE_COLOR_MATRIX_BIT 0x80
2658 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2659 #define IMAGE_HISTOGRAM_BIT 0x200
2660 #define IMAGE_MIN_MAX_BIT 0x400
2661 #define IMAGE_CLAMP_BIT 0x800 /* extra */
2664 /** Pixel Transfer ops up to convolution */
2665 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2666 IMAGE_SHIFT_OFFSET_BIT | \
2667 IMAGE_MAP_COLOR_BIT | \
2668 IMAGE_COLOR_TABLE_BIT)
2670 /** Pixel transfer ops after convolution */
2671 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2672 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2673 IMAGE_COLOR_MATRIX_BIT | \
2674 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2675 IMAGE_HISTOGRAM_BIT | \
2681 * \name Bits to indicate what state has changed.
2686 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2687 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2688 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2689 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2690 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2691 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2692 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2693 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2694 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2695 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2696 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2697 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2698 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2699 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2700 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2701 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2702 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2703 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2704 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2705 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2706 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2707 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2708 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2709 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2710 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2711 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2712 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2713 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2719 * \name Bits to track array state changes
2721 * Also used to summarize array enabled.
2724 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2725 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2726 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2727 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2728 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2729 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2730 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
2731 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
2732 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2733 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2734 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2735 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2736 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2737 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2738 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2739 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2740 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
2741 #define _NEW_ARRAY_ALL 0xffffffff
2744 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2745 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2750 * \name A bunch of flags that we think might be useful to drivers.
2752 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2755 #define DD_FLATSHADE 0x1
2756 #define DD_SEPARATE_SPECULAR 0x2
2757 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2758 #define DD_TRI_LIGHT_TWOSIDE 0x8
2759 #define DD_TRI_UNFILLED 0x10
2760 #define DD_TRI_SMOOTH 0x20
2761 #define DD_TRI_STIPPLE 0x40
2762 #define DD_TRI_OFFSET 0x80
2763 #define DD_LINE_SMOOTH 0x100
2764 #define DD_LINE_STIPPLE 0x200
2765 #define DD_LINE_WIDTH 0x400
2766 #define DD_POINT_SMOOTH 0x800
2767 #define DD_POINT_SIZE 0x1000
2768 #define DD_POINT_ATTEN 0x2000
2769 #define DD_TRI_TWOSTENCIL 0x4000
2774 * \name Define the state changes under which each of these bits might change
2777 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2778 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2779 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2780 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2781 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2782 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2783 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2784 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2785 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2786 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2787 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2788 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2789 #define _DD_NEW_POINT_SIZE _NEW_POINT
2790 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2794 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2800 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2803 #define _IMAGE_NEW_TRANSFER_STATE (_NEW_PIXEL | _NEW_COLOR_MATRIX)
2809 * Forward declaration of display list data types:
2812 typedef union node Node
;
2815 /* This has to be included here. */
2819 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2822 * Core Mesa's support for tnl modules:
2824 struct gl_tnl_module
2827 * Vertex format to be lazily swapped into current dispatch.
2829 const GLvertexformat
*Current
;
2832 * \name Record of functions swapped out.
2833 * On restore, only need to swap these functions back in.
2837 _glapi_proc
* location
;
2838 _glapi_proc function
;
2839 } Swapped
[NUM_VERTEX_FORMAT_ENTRIES
];
2844 /* Strictly this is a tnl/ private concept, but it doesn't seem
2845 * worthwhile adding a tnl private structure just to hold this one bit
2848 #define MESA_DLIST_DANGLING_REFS 0x1
2850 /* Provide a location where information about a display list can be
2851 * collected. Could be extended with driverPrivate structures,
2852 * etc. in the future.
2854 struct mesa_display_list
2863 * State used during display list compilation and execution.
2865 struct gl_dlist_state
2867 GLuint CallDepth
; /**< Current recursion calling depth */
2869 struct mesa_display_list
*CurrentList
;
2870 Node
*CurrentListPtr
; /**< Head of list being compiled */
2871 GLuint CurrentListNum
; /**< Number of the list being compiled */
2872 Node
*CurrentBlock
; /**< Pointer to current block of nodes */
2873 GLuint CurrentPos
; /**< Index into current block of nodes */
2875 GLvertexformat ListVtxfmt
;
2877 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
2878 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
2880 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
2881 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
2883 GLubyte ActiveIndex
;
2884 GLfloat CurrentIndex
;
2886 GLubyte ActiveEdgeFlag
;
2887 GLboolean CurrentEdgeFlag
;
2892 * Mesa rendering context.
2894 * This is the central context data structure for Mesa. Almost all
2895 * OpenGL state is contained in this structure.
2896 * Think of this as a base class from which device drivers will derive
2899 * The GLcontext typedef names this structure.
2901 struct __GLcontextRec
2903 /** State possibly shared with other contexts in the address space */
2904 struct gl_shared_state
*Shared
;
2906 /** \name API function pointer tables */
2908 struct _glapi_table
*Save
; /**< Display list save functions */
2909 struct _glapi_table
*Exec
; /**< Execute functions */
2910 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
2914 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
2915 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
2916 GLframebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
2917 GLframebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
2920 * Device driver function pointer table
2922 struct dd_function_table Driver
;
2924 void *DriverCtx
; /**< Points to device driver context/state */
2926 /** Core/Driver constants */
2927 struct gl_constants Const
;
2929 /** \name The various 4x4 matrix stacks */
2931 struct gl_matrix_stack ModelviewMatrixStack
;
2932 struct gl_matrix_stack ProjectionMatrixStack
;
2933 struct gl_matrix_stack ColorMatrixStack
;
2934 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_COORD_UNITS
];
2935 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
2936 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
2939 /** Combined modelview and projection matrix */
2940 GLmatrix _ModelProjectMatrix
;
2942 /** \name Display lists */
2943 struct gl_dlist_state ListState
;
2945 GLboolean ExecuteFlag
; /**< Execute GL commands? */
2946 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
2948 /** Extension information */
2949 struct gl_extensions Extensions
;
2951 /** \name State attribute stack (for glPush/PopAttrib) */
2953 GLuint AttribStackDepth
;
2954 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
2957 /** \name Renderer attribute groups
2959 * We define a struct for each attribute group to make pushing and popping
2960 * attributes easy. Also it's a good organization.
2963 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
2964 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
2965 struct gl_current_attrib Current
; /**< Current attributes */
2966 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
2967 struct gl_eval_attrib Eval
; /**< Eval attributes */
2968 struct gl_fog_attrib Fog
; /**< Fog attributes */
2969 struct gl_hint_attrib Hint
; /**< Hint attributes */
2970 struct gl_light_attrib Light
; /**< Light attributes */
2971 struct gl_line_attrib Line
; /**< Line attributes */
2972 struct gl_list_attrib List
; /**< List attributes */
2973 struct gl_multisample_attrib Multisample
;
2974 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
2975 struct gl_point_attrib Point
; /**< Point attributes */
2976 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
2977 GLuint PolygonStipple
[32]; /**< Polygon stipple */
2978 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
2979 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
2980 struct gl_texture_attrib Texture
; /**< Texture attributes */
2981 struct gl_transform_attrib Transform
; /**< Transformation attributes */
2982 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
2985 /** \name Client attribute stack */
2987 GLuint ClientAttribStackDepth
;
2988 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
2991 /** \name Client attribute groups */
2993 struct gl_array_attrib Array
; /**< Vertex arrays */
2994 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
2995 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
2996 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
2999 /** \name Other assorted state (not pushed/popped on attribute stack) */
3001 struct gl_pixelmaps PixelMaps
;
3002 struct gl_histogram_attrib Histogram
;
3003 struct gl_minmax_attrib MinMax
;
3004 struct gl_convolution_attrib Convolution1D
;
3005 struct gl_convolution_attrib Convolution2D
;
3006 struct gl_convolution_attrib Separable2D
;
3008 struct gl_evaluators EvalMap
; /**< All evaluators */
3009 struct gl_feedback Feedback
; /**< Feedback */
3010 struct gl_selection Select
; /**< Selection */
3012 struct gl_color_table ColorTable
[COLORTABLE_MAX
];
3013 struct gl_color_table ProxyColorTable
[COLORTABLE_MAX
];
3015 struct gl_color_table PostConvolutionColorTable
;
3016 struct gl_color_table ProxyPostConvolutionColorTable
;
3017 struct gl_color_table PostColorMatrixColorTable
;
3018 struct gl_color_table ProxyPostColorMatrixColorTable
;
3021 struct gl_program_state Program
; /**< for vertex or fragment progs */
3022 struct gl_vertex_program_state VertexProgram
; /**< GL_ARB/NV_vertex_program */
3023 struct gl_fragment_program_state FragmentProgram
; /**< GL_ARB/NV_vertex_program */
3024 struct gl_ati_fragment_shader_state ATIFragmentShader
; /**< GL_ATI_fragment_shader */
3026 struct gl_query_state Query
; /**< GL_ARB_occlusion_query */
3028 struct gl_shader_state Shader
; /**< GLSL shader object state */
3031 #if FEATURE_EXT_framebuffer_object
3032 struct gl_renderbuffer
*CurrentRenderbuffer
;
3035 GLenum ErrorValue
; /**< Last error code */
3036 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3037 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3039 /** \name Derived state */
3041 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3042 * state validation so they need to always be current.
3044 GLbitfield _TriangleCaps
;
3045 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3046 GLfloat _EyeZDir
[3];
3047 GLfloat _ModelViewInvScale
;
3048 GLboolean _NeedEyeCoords
;
3049 GLboolean _ForceEyeCoords
;
3050 GLenum _CurrentProgram
; /* currently executing program */
3052 GLuint TextureStateTimestamp
; /* detect changes to shared state */
3054 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3055 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3058 struct gl_list_extensions ListExt
; /**< driver dlist extensions */
3060 /** \name For debugging/development only */
3062 GLboolean FirstTimeCurrent
;
3065 /** Dither disable via MESA_NO_DITHER env var */
3068 /** software compression/decompression supported or not */
3069 GLboolean Mesa_DXTn
;
3071 /** Core tnl module support */
3072 struct gl_tnl_module TnlModule
;
3075 * \name Hooks for module contexts.
3077 * These will eventually live in the driver or elsewhere.
3080 void *swrast_context
;
3081 void *swsetup_context
;
3082 void *swtnl_context
;
3084 void *acache_context
;
3090 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
3091 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
3095 extern int MESA_VERBOSE
;
3096 extern int MESA_DEBUG_FLAGS
;
3097 # define MESA_FUNCTION __FUNCTION__
3099 # define MESA_VERBOSE 0
3100 # define MESA_DEBUG_FLAGS 0
3101 # define MESA_FUNCTION "a function"
3110 VERBOSE_VARRAY
= 0x0001,
3111 VERBOSE_TEXTURE
= 0x0002,
3112 VERBOSE_IMMEDIATE
= 0x0004,
3113 VERBOSE_PIPELINE
= 0x0008,
3114 VERBOSE_DRIVER
= 0x0010,
3115 VERBOSE_STATE
= 0x0020,
3116 VERBOSE_API
= 0x0040,
3117 VERBOSE_DISPLAY_LIST
= 0x0100,
3118 VERBOSE_LIGHTING
= 0x0200,
3119 VERBOSE_PRIMS
= 0x0400,
3120 VERBOSE_VERTS
= 0x0800,
3121 VERBOSE_DISASSEM
= 0x1000
3127 DEBUG_ALWAYS_FLUSH
= 0x1
3132 #define Elements(x) sizeof(x)/sizeof(*(x))
3135 #endif /* TYPES_H */