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) 1999-2005 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 */
47 * Color channel data type.
50 typedef GLubyte GLchan
;
52 #define CHAN_MAXF 255.0F
53 #define CHAN_TYPE GL_UNSIGNED_BYTE
55 typedef GLushort GLchan
;
56 #define CHAN_MAX 65535
57 #define CHAN_MAXF 65535.0F
58 #define CHAN_TYPE GL_UNSIGNED_SHORT
60 typedef GLfloat GLchan
;
62 #define CHAN_MAXF 1.0F
63 #define CHAN_TYPE GL_FLOAT
65 #error "illegal number of color channel bits"
70 * Stencil buffer data type.
73 typedef GLubyte GLstencil
;
74 #elif STENCIL_BITS==16
75 typedef GLushort GLstencil
;
77 # error "illegal number of stencil bits"
82 * Fixed point data type.
86 * Fixed point arithmetic macros
88 #ifndef FIXED_FRAC_BITS
89 #define FIXED_FRAC_BITS 11
92 #define FIXED_SHIFT FIXED_FRAC_BITS
93 #define FIXED_ONE (1 << FIXED_SHIFT)
94 #define FIXED_HALF (1 << (FIXED_SHIFT-1))
95 #define FIXED_FRAC_MASK (FIXED_ONE - 1)
96 #define FIXED_INT_MASK (~FIXED_FRAC_MASK)
97 #define FIXED_EPSILON 1
98 #define FIXED_SCALE ((float) FIXED_ONE)
99 #define FIXED_DBL_SCALE ((double) FIXED_ONE)
100 #define FloatToFixed(X) (IROUND((X) * FIXED_SCALE))
101 #define FixedToDouble(X) ((X) * (1.0 / FIXED_DBL_SCALE))
102 #define IntToFixed(I) ((I) << FIXED_SHIFT)
103 #define FixedToInt(X) ((X) >> FIXED_SHIFT)
104 #define FixedToUns(X) (((unsigned int)(X)) >> FIXED_SHIFT)
105 #define FixedCeil(X) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
106 #define FixedFloor(X) ((X) & FIXED_INT_MASK)
107 #define FixedToFloat(X) ((X) * (1.0F / FIXED_SCALE))
108 #define PosFloatToFixed(X) FloatToFixed(X)
109 #define SignedFloatToFixed(X) FloatToFixed(X)
114 * \name Some forward type declarations
117 struct _mesa_HashTable
;
118 struct gl_pixelstore_attrib
;
119 struct gl_texture_format
;
120 struct gl_texture_image
;
121 struct gl_texture_object
;
122 typedef struct __GLcontextRec GLcontext
;
123 typedef struct __GLcontextModesRec GLvisual
;
124 typedef struct gl_framebuffer GLframebuffer
;
130 * Indexes for vertex program attributes.
131 * GL_NV_vertex_program aliases generic attributes over the conventional
132 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
133 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
134 * generic attributes are distinct/separate).
139 VERT_ATTRIB_WEIGHT
= 1,
140 VERT_ATTRIB_NORMAL
= 2,
141 VERT_ATTRIB_COLOR0
= 3,
142 VERT_ATTRIB_COLOR1
= 4,
145 VERT_ATTRIB_SEVEN
= 7,
146 VERT_ATTRIB_TEX0
= 8,
147 VERT_ATTRIB_TEX1
= 9,
148 VERT_ATTRIB_TEX2
= 10,
149 VERT_ATTRIB_TEX3
= 11,
150 VERT_ATTRIB_TEX4
= 12,
151 VERT_ATTRIB_TEX5
= 13,
152 VERT_ATTRIB_TEX6
= 14,
153 VERT_ATTRIB_TEX7
= 15,
154 VERT_ATTRIB_GENERIC0
= 16,
155 VERT_ATTRIB_GENERIC1
= 17,
156 VERT_ATTRIB_GENERIC2
= 18,
157 VERT_ATTRIB_GENERIC3
= 19,
162 * Bitflags for vertex attributes.
163 * These are used in bitfields in many places.
166 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
167 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
168 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
169 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
170 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
171 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
172 #define VERT_BIT_SIX (1 << VERT_ATTRIB_SIX)
173 #define VERT_BIT_SEVEN (1 << VERT_ATTRIB_SEVEN)
174 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
175 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
176 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
177 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
178 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
179 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
180 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
181 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
182 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
183 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
184 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
185 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
187 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
188 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
193 * Indexes for vertex program result attributes
195 #define VERT_RESULT_HPOS 0
196 #define VERT_RESULT_COL0 1
197 #define VERT_RESULT_COL1 2
198 #define VERT_RESULT_BFC0 3
199 #define VERT_RESULT_BFC1 4
200 #define VERT_RESULT_FOGC 5
201 #define VERT_RESULT_PSIZ 6
202 #define VERT_RESULT_TEX0 7
203 #define VERT_RESULT_TEX1 8
204 #define VERT_RESULT_TEX2 9
205 #define VERT_RESULT_TEX3 10
206 #define VERT_RESULT_TEX4 11
207 #define VERT_RESULT_TEX5 12
208 #define VERT_RESULT_TEX6 13
209 #define VERT_RESULT_TEX7 14
210 #define VERT_RESULT_MAX 15
214 * Indexes for fragment program input attributes.
218 FRAG_ATTRIB_WPOS
= 0,
219 FRAG_ATTRIB_COL0
= 1,
220 FRAG_ATTRIB_COL1
= 2,
221 FRAG_ATTRIB_FOGC
= 3,
222 FRAG_ATTRIB_TEX0
= 4,
223 FRAG_ATTRIB_TEX1
= 5,
224 FRAG_ATTRIB_TEX2
= 6,
225 FRAG_ATTRIB_TEX3
= 7,
226 FRAG_ATTRIB_TEX4
= 8,
227 FRAG_ATTRIB_TEX5
= 9,
228 FRAG_ATTRIB_TEX6
= 10,
229 FRAG_ATTRIB_TEX7
= 11
233 * Bitflags for fragment attributes.
236 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
237 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
238 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
239 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
240 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
241 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
242 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
243 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
244 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
245 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
246 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
247 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
249 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
261 * Indexes for all renderbuffers
264 BUFFER_FRONT_LEFT
= 0, /* the four standard color buffers */
265 BUFFER_BACK_LEFT
= 1,
266 BUFFER_FRONT_RIGHT
= 2,
267 BUFFER_BACK_RIGHT
= 3,
268 BUFFER_AUX0
= 4, /* optional aux buffer */
275 BUFFER_COLOR0
= 11, /* generic renderbuffers */
287 * Bit flags for all renderbuffers
289 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
290 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
291 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
292 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
293 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
294 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
295 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
296 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
297 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
298 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
299 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
300 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
301 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
302 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
303 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
304 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
305 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
306 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
307 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
311 * Data structure for color tables
313 struct gl_color_table
315 GLenum Format
; /**< GL_ALPHA, GL_RGB, GL_RGB, etc */
317 GLuint Size
; /**< number of entries (rows) in table */
318 GLvoid
*Table
; /**< points to data of <Type> */
319 GLenum Type
; /**< GL_UNSIGNED_BYTE or GL_FLOAT */
324 GLubyte LuminanceSize
;
325 GLubyte IntensitySize
;
330 * \name Bit flags used for updating material values.
333 #define MAT_ATTRIB_FRONT_AMBIENT 0
334 #define MAT_ATTRIB_BACK_AMBIENT 1
335 #define MAT_ATTRIB_FRONT_DIFFUSE 2
336 #define MAT_ATTRIB_BACK_DIFFUSE 3
337 #define MAT_ATTRIB_FRONT_SPECULAR 4
338 #define MAT_ATTRIB_BACK_SPECULAR 5
339 #define MAT_ATTRIB_FRONT_EMISSION 6
340 #define MAT_ATTRIB_BACK_EMISSION 7
341 #define MAT_ATTRIB_FRONT_SHININESS 8
342 #define MAT_ATTRIB_BACK_SHININESS 9
343 #define MAT_ATTRIB_FRONT_INDEXES 10
344 #define MAT_ATTRIB_BACK_INDEXES 11
345 #define MAT_ATTRIB_MAX 12
347 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
348 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
349 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
350 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
351 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
352 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
354 #define MAT_INDEX_AMBIENT 0
355 #define MAT_INDEX_DIFFUSE 1
356 #define MAT_INDEX_SPECULAR 2
358 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
359 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
360 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
361 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
362 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
363 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
364 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
365 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
366 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
367 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
368 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
369 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
372 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
373 MAT_BIT_FRONT_AMBIENT | \
374 MAT_BIT_FRONT_DIFFUSE | \
375 MAT_BIT_FRONT_SPECULAR | \
376 MAT_BIT_FRONT_SHININESS | \
377 MAT_BIT_FRONT_INDEXES)
379 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
380 MAT_BIT_BACK_AMBIENT | \
381 MAT_BIT_BACK_DIFFUSE | \
382 MAT_BIT_BACK_SPECULAR | \
383 MAT_BIT_BACK_SHININESS | \
384 MAT_BIT_BACK_INDEXES)
386 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
390 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
391 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
394 * Material shininess lookup table.
398 struct gl_shine_tab
*next
, *prev
;
399 GLfloat tab
[SHINE_TABLE_SIZE
+1];
406 * Light source state.
410 struct gl_light
*next
; /**< double linked list with sentinel */
411 struct gl_light
*prev
;
413 GLfloat Ambient
[4]; /**< ambient color */
414 GLfloat Diffuse
[4]; /**< diffuse color */
415 GLfloat Specular
[4]; /**< specular color */
416 GLfloat EyePosition
[4]; /**< position in eye coordinates */
417 GLfloat EyeDirection
[4]; /**< spotlight dir in eye coordinates */
418 GLfloat SpotExponent
;
419 GLfloat SpotCutoff
; /**< in degrees */
420 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
421 GLfloat ConstantAttenuation
;
422 GLfloat LinearAttenuation
;
423 GLfloat QuadraticAttenuation
;
424 GLboolean Enabled
; /**< On/off flag */
427 * \name Derived fields
430 GLbitfield _Flags
; /**< State */
432 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
433 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
434 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
435 GLfloat _NormDirection
[4]; /**< normalized spotlight direction */
436 GLfloat _VP_inf_spot_attenuation
;
438 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
439 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
440 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
441 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
442 GLfloat _dli
; /**< CI diffuse light intensity */
443 GLfloat _sli
; /**< CI specular light intensity */
453 GLfloat Ambient
[4]; /**< ambient color */
454 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
455 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
456 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
457 * or GL_SEPARATE_SPECULAR_COLOR */
466 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
471 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
473 struct gl_accum_attrib
475 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
480 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
482 struct gl_colorbuffer_attrib
484 GLuint ClearIndex
; /**< Index to use for glClear */
485 GLclampf ClearColor
[4]; /**< Color to use for glClear */
487 GLuint IndexMask
; /**< Color index write mask */
488 GLubyte ColorMask
[4]; /**< Each flag is 0xff or 0x0 */
490 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
493 * \name alpha testing
496 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
497 GLenum AlphaFunc
; /**< Alpha test function */
498 GLclampf AlphaRef
; /**< Alpha reference value */
505 GLboolean BlendEnabled
; /**< Blending enabled flag */
506 GLenum BlendSrcRGB
; /**< Blending source operator */
507 GLenum BlendDstRGB
; /**< Blending destination operator */
508 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
509 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
510 GLenum BlendEquationRGB
; /**< Blending equation */
511 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
512 GLfloat BlendColor
[4]; /**< Blending color */
519 GLenum LogicOp
; /**< Logic operator */
520 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
521 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
522 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
525 GLboolean DitherFlag
; /**< Dither enable flag */
530 * Current attribute group (GL_CURRENT_BIT).
532 struct gl_current_attrib
535 * \name Values valid only when FLUSH_VERTICES has been called.
538 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Current vertex attributes
539 * indexed by VERT_ATTRIB_* */
540 GLfloat Index
; /**< Current color index */
541 GLboolean EdgeFlag
; /**< Current edge flag */
545 * \name Values are always valid.
547 * \note BTW, note how similar this set of attributes is to the SWvertex
548 * data type in the software rasterizer...
551 GLfloat RasterPos
[4]; /**< Current raster position */
552 GLfloat RasterDistance
; /**< Current raster distance */
553 GLfloat RasterColor
[4]; /**< Current raster color */
554 GLfloat RasterSecondaryColor
[4]; /**< Current raster secondary color */
555 GLfloat RasterIndex
; /**< Current raster index */
556 GLfloat RasterTexCoords
[MAX_TEXTURE_UNITS
][4];/**< Current raster texcoords */
557 GLboolean RasterPosValid
; /**< Raster pos valid flag */
563 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
565 struct gl_depthbuffer_attrib
567 GLenum Func
; /**< Function for depth buffer compare */
568 GLclampd Clear
; /**< Value to clear depth buffer to */
569 GLboolean Test
; /**< Depth buffering enabled flag */
570 GLboolean Mask
; /**< Depth buffer writable? */
571 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
572 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
577 * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
579 struct gl_enable_attrib
582 GLboolean AutoNormal
;
584 GLbitfield ClipPlanes
;
585 GLboolean ColorMaterial
;
586 GLboolean ColorTable
; /* SGI_color_table */
587 GLboolean PostColorMatrixColorTable
; /* SGI_color_table */
588 GLboolean PostConvolutionColorTable
; /* SGI_color_table */
589 GLboolean Convolution1D
;
590 GLboolean Convolution2D
;
591 GLboolean Separable2D
;
597 GLboolean Light
[MAX_LIGHTS
];
599 GLboolean LineSmooth
;
600 GLboolean LineStipple
;
601 GLboolean IndexLogicOp
;
602 GLboolean ColorLogicOp
;
603 GLboolean Map1Color4
;
605 GLboolean Map1Normal
;
606 GLboolean Map1TextureCoord1
;
607 GLboolean Map1TextureCoord2
;
608 GLboolean Map1TextureCoord3
;
609 GLboolean Map1TextureCoord4
;
610 GLboolean Map1Vertex3
;
611 GLboolean Map1Vertex4
;
612 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
613 GLboolean Map2Color4
;
615 GLboolean Map2Normal
;
616 GLboolean Map2TextureCoord1
;
617 GLboolean Map2TextureCoord2
;
618 GLboolean Map2TextureCoord3
;
619 GLboolean Map2TextureCoord4
;
620 GLboolean Map2Vertex3
;
621 GLboolean Map2Vertex4
;
622 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
625 GLboolean PixelTexture
;
626 GLboolean PointSmooth
;
627 GLboolean PolygonOffsetPoint
;
628 GLboolean PolygonOffsetLine
;
629 GLboolean PolygonOffsetFill
;
630 GLboolean PolygonSmooth
;
631 GLboolean PolygonStipple
;
632 GLboolean RescaleNormals
;
635 GLboolean StencilTwoSide
; /* GL_EXT_stencil_two_side */
636 GLboolean MultisampleEnabled
; /* GL_ARB_multisample */
637 GLboolean SampleAlphaToCoverage
; /* GL_ARB_multisample */
638 GLboolean SampleAlphaToOne
; /* GL_ARB_multisample */
639 GLboolean SampleCoverage
; /* GL_ARB_multisample */
640 GLboolean SampleCoverageInvert
; /* GL_ARB_multisample */
641 GLboolean RasterPositionUnclipped
; /* GL_IBM_rasterpos_clip */
642 GLuint Texture
[MAX_TEXTURE_IMAGE_UNITS
];
643 GLuint TexGen
[MAX_TEXTURE_COORD_UNITS
];
644 /* SGI_texture_color_table */
645 GLboolean TextureColorTable
[MAX_TEXTURE_IMAGE_UNITS
];
646 /* GL_NV_vertex_program */
647 GLboolean VertexProgram
;
648 GLboolean VertexProgramPointSize
;
649 GLboolean VertexProgramTwoSide
;
650 /* GL_ARB_point_sprite / GL_NV_point_sprite */
651 GLboolean PointSprite
;
652 GLboolean FragmentShaderATI
;
657 * Evaluator attribute group (GL_EVAL_BIT).
659 struct gl_eval_attrib
665 GLboolean Map1Color4
;
667 GLboolean Map1Normal
;
668 GLboolean Map1TextureCoord1
;
669 GLboolean Map1TextureCoord2
;
670 GLboolean Map1TextureCoord3
;
671 GLboolean Map1TextureCoord4
;
672 GLboolean Map1Vertex3
;
673 GLboolean Map1Vertex4
;
674 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
675 GLboolean Map2Color4
;
677 GLboolean Map2Normal
;
678 GLboolean Map2TextureCoord1
;
679 GLboolean Map2TextureCoord2
;
680 GLboolean Map2TextureCoord3
;
681 GLboolean Map2TextureCoord4
;
682 GLboolean Map2Vertex3
;
683 GLboolean Map2Vertex4
;
684 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
685 GLboolean AutoNormal
;
689 * \name Map Grid endpoints and divisions and calculated du values
693 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
694 GLint MapGrid2un
, MapGrid2vn
;
695 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
696 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
702 * Fog attribute group (GL_FOG_BIT).
706 GLboolean Enabled
; /**< Fog enabled flag */
707 GLfloat Color
[4]; /**< Fog color */
708 GLfloat Density
; /**< Density >= 0.0 */
709 GLfloat Start
; /**< Start distance in eye coords */
710 GLfloat End
; /**< End distance in eye coords */
711 GLfloat Index
; /**< Fog index */
712 GLenum Mode
; /**< Fog mode */
713 GLboolean ColorSumEnabled
;
714 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
719 * Hint attribute group (GL_HINT_BIT).
721 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
723 struct gl_hint_attrib
725 GLenum PerspectiveCorrection
;
728 GLenum PolygonSmooth
;
730 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
731 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
732 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
733 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
738 * Histogram attributes.
740 struct gl_histogram_attrib
742 GLuint Width
; /**< number of table entries */
743 GLint Format
; /**< GL_ALPHA, GL_RGB, etc */
744 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /**< the histogram */
745 GLboolean Sink
; /**< terminate image transfer? */
746 GLubyte RedSize
; /**< Bits per counter */
750 GLubyte LuminanceSize
;
755 * Color Min/max state.
757 struct gl_minmax_attrib
761 GLfloat Min
[4], Max
[4]; /**< RGBA */
766 * Image convolution state.
768 struct gl_convolution_attrib
771 GLenum InternalFormat
;
774 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
782 #define LIGHT_SPOT 0x1
783 #define LIGHT_LOCAL_VIEWER 0x2
784 #define LIGHT_POSITIONAL 0x4
785 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
790 * Lighting attribute group (GL_LIGHT_BIT).
792 struct gl_light_attrib
794 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
795 struct gl_lightmodel Model
; /**< Lighting model */
798 * Must flush FLUSH_VERTICES before referencing:
801 struct gl_material Material
; /**< Includes front & back values */
804 GLboolean Enabled
; /**< Lighting enabled flag */
805 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
806 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
807 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
808 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
809 GLboolean ColorMaterialEnabled
;
811 struct gl_light EnabledList
; /**< List sentinel */
814 * Derived state for optimizations:
817 GLboolean _NeedEyeCoords
;
818 GLboolean _NeedVertices
; /**< Use fast shader? */
819 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
820 GLfloat _BaseColor
[2][3];
826 * Line attribute group (GL_LINE_BIT).
828 struct gl_line_attrib
830 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
831 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
832 GLushort StipplePattern
; /**< Stipple pattern */
833 GLint StippleFactor
; /**< Stipple repeat factor */
834 GLfloat Width
; /**< Line width */
835 GLfloat _Width
; /**< Clamped Line width */
840 * Display list attribute group (GL_LIST_BIT).
842 struct gl_list_attrib
849 * Used by device drivers to hook new commands into display lists.
851 struct gl_list_instruction
854 void (*Execute
)( GLcontext
*ctx
, void *data
);
855 void (*Destroy
)( GLcontext
*ctx
, void *data
);
856 void (*Print
)( GLcontext
*ctx
, void *data
);
859 #define MAX_DLIST_EXT_OPCODES 16
862 * Used by device drivers to hook new commands into display lists.
864 struct gl_list_extensions
866 struct gl_list_instruction Opcode
[MAX_DLIST_EXT_OPCODES
];
872 * Multisample attribute group (GL_MULTISAMPLE_BIT).
874 struct gl_multisample_attrib
877 GLboolean SampleAlphaToCoverage
;
878 GLboolean SampleAlphaToOne
;
879 GLboolean SampleCoverage
;
880 GLfloat SampleCoverageValue
;
881 GLboolean SampleCoverageInvert
;
886 * Pixel attribute group (GL_PIXEL_MODE_BIT).
888 struct gl_pixel_attrib
890 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
891 GLfloat RedBias
, RedScale
;
892 GLfloat GreenBias
, GreenScale
;
893 GLfloat BlueBias
, BlueScale
;
894 GLfloat AlphaBias
, AlphaScale
;
895 GLfloat DepthBias
, DepthScale
;
896 GLint IndexShift
, IndexOffset
;
897 GLboolean MapColorFlag
;
898 GLboolean MapStencilFlag
;
899 GLfloat ZoomX
, ZoomY
;
900 /* XXX move these out of gl_pixel_attrib */
901 GLint MapStoSsize
; /**< Size of each pixel map */
911 GLint MapStoS
[MAX_PIXEL_MAP_TABLE
]; /**< Pixel map tables */
912 GLfloat MapItoI
[MAX_PIXEL_MAP_TABLE
];
913 GLfloat MapItoR
[MAX_PIXEL_MAP_TABLE
];
914 GLfloat MapItoG
[MAX_PIXEL_MAP_TABLE
];
915 GLfloat MapItoB
[MAX_PIXEL_MAP_TABLE
];
916 GLfloat MapItoA
[MAX_PIXEL_MAP_TABLE
];
917 GLubyte MapItoR8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
918 GLubyte MapItoG8
[MAX_PIXEL_MAP_TABLE
];
919 GLubyte MapItoB8
[MAX_PIXEL_MAP_TABLE
];
920 GLubyte MapItoA8
[MAX_PIXEL_MAP_TABLE
];
921 GLfloat MapRtoR
[MAX_PIXEL_MAP_TABLE
];
922 GLfloat MapGtoG
[MAX_PIXEL_MAP_TABLE
];
923 GLfloat MapBtoB
[MAX_PIXEL_MAP_TABLE
];
924 GLfloat MapAtoA
[MAX_PIXEL_MAP_TABLE
];
925 /** GL_EXT_histogram */
926 GLboolean HistogramEnabled
;
927 GLboolean MinMaxEnabled
;
928 /** GL_SGIS_pixel_texture */
929 GLboolean PixelTextureEnabled
;
930 GLenum FragmentRgbSource
;
931 GLenum FragmentAlphaSource
;
932 /** GL_SGI_color_matrix */
933 GLfloat PostColorMatrixScale
[4]; /**< RGBA */
934 GLfloat PostColorMatrixBias
[4]; /**< RGBA */
935 /** GL_SGI_color_table */
936 GLfloat ColorTableScale
[4];
937 GLfloat ColorTableBias
[4];
938 GLboolean ColorTableEnabled
;
939 GLfloat PCCTscale
[4];
941 GLboolean PostConvolutionColorTableEnabled
;
942 GLfloat PCMCTscale
[4];
943 GLfloat PCMCTbias
[4];
944 GLboolean PostColorMatrixColorTableEnabled
;
945 /** GL_SGI_texture_color_table */
946 GLfloat TextureColorTableScale
[4];
947 GLfloat TextureColorTableBias
[4];
949 GLboolean Convolution1DEnabled
;
950 GLboolean Convolution2DEnabled
;
951 GLboolean Separable2DEnabled
;
952 GLfloat ConvolutionBorderColor
[3][4];
953 GLenum ConvolutionBorderMode
[3];
954 GLfloat ConvolutionFilterScale
[3][4];
955 GLfloat ConvolutionFilterBias
[3][4];
956 GLfloat PostConvolutionScale
[4]; /**< RGBA */
957 GLfloat PostConvolutionBias
[4]; /**< RGBA */
962 * Point attribute group (GL_POINT_BIT).
964 struct gl_point_attrib
966 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
967 GLfloat Size
; /**< User-specified point size */
968 GLfloat _Size
; /**< Size clamped to Const.Min/MaxPointSize */
969 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
970 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
971 GLfloat Threshold
; /**< GL_EXT_point_parameters */
972 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
973 GLboolean PointSprite
; /**< GL_NV_point_sprite / GL_NV_point_sprite */
974 GLboolean CoordReplace
[MAX_TEXTURE_UNITS
]; /**< GL_NV/ARB_point_sprite */
975 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
976 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
981 * Polygon attribute group (GL_POLYGON_BIT).
983 struct gl_polygon_attrib
985 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
986 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
987 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
988 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
989 GLboolean CullFlag
; /**< Culling on/off flag */
990 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
991 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
992 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
993 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
994 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
995 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
996 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
997 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1002 * Scissor attributes (GL_SCISSOR_BIT).
1004 struct gl_scissor_attrib
1006 GLboolean Enabled
; /**< Scissor test enabled? */
1007 GLint X
, Y
; /**< Lower left corner of box */
1008 GLsizei Width
, Height
; /**< Size of box */
1013 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1015 struct gl_stencil_attrib
1017 GLboolean Enabled
; /**< Enabled flag */
1018 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1019 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 1) */
1020 GLboolean _TestTwoSide
;
1021 GLenum Function
[2]; /**< Stencil function */
1022 GLenum FailFunc
[2]; /**< Fail function */
1023 GLenum ZPassFunc
[2]; /**< Depth buffer pass function */
1024 GLenum ZFailFunc
[2]; /**< Depth buffer fail function */
1025 GLint Ref
[2]; /**< Reference value */
1026 GLuint ValueMask
[2]; /**< Value mask */
1027 GLuint WriteMask
[2]; /**< Write mask */
1028 GLuint Clear
; /**< Clear value */
1032 #define NUM_TEXTURE_TARGETS 5 /* 1D, 2D, 3D, CUBE and RECT */
1035 * An index for each type of texture object
1038 #define TEXTURE_1D_INDEX 0
1039 #define TEXTURE_2D_INDEX 1
1040 #define TEXTURE_3D_INDEX 2
1041 #define TEXTURE_CUBE_INDEX 3
1042 #define TEXTURE_RECT_INDEX 4
1046 * Bit flags for each type of texture object
1047 * Used for Texture.Unit[]._ReallyEnabled flags.
1050 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1051 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1052 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1053 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1054 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1059 * TexGenEnabled flags.
1070 * Bit flag versions of the corresponding GL_ constants.
1073 #define TEXGEN_SPHERE_MAP 0x1
1074 #define TEXGEN_OBJ_LINEAR 0x2
1075 #define TEXGEN_EYE_LINEAR 0x4
1076 #define TEXGEN_REFLECTION_MAP_NV 0x8
1077 #define TEXGEN_NORMAL_MAP_NV 0x10
1079 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1080 TEXGEN_REFLECTION_MAP_NV | \
1081 TEXGEN_NORMAL_MAP_NV)
1082 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1083 TEXGEN_REFLECTION_MAP_NV | \
1084 TEXGEN_NORMAL_MAP_NV | \
1089 /* A selection of state flags to make driver and module's lives easier. */
1090 #define ENABLE_TEXGEN0 0x1
1091 #define ENABLE_TEXGEN1 0x2
1092 #define ENABLE_TEXGEN2 0x4
1093 #define ENABLE_TEXGEN3 0x8
1094 #define ENABLE_TEXGEN4 0x10
1095 #define ENABLE_TEXGEN5 0x20
1096 #define ENABLE_TEXGEN6 0x40
1097 #define ENABLE_TEXGEN7 0x80
1099 #define ENABLE_TEXMAT0 0x1 /* Ie. not the identity matrix */
1100 #define ENABLE_TEXMAT1 0x2
1101 #define ENABLE_TEXMAT2 0x4
1102 #define ENABLE_TEXMAT3 0x8
1103 #define ENABLE_TEXMAT4 0x10
1104 #define ENABLE_TEXMAT5 0x20
1105 #define ENABLE_TEXMAT6 0x40
1106 #define ENABLE_TEXMAT7 0x80
1108 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
1109 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
1113 * Texel fetch function prototype. We use texel fetch functions to
1114 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1115 * texture images. These functions help to isolate us from the gritty
1116 * details of all the various texture image encodings.
1118 * \param texImage texture image.
1119 * \param col texel column.
1120 * \param row texel row.
1121 * \param img texel image level/layer.
1122 * \param texelOut output texel (up to 4 GLchans)
1124 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1125 GLint col
, GLint row
, GLint img
,
1129 * As above, but returns floats.
1130 * Used for depth component images and for upcoming signed/float
1133 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1134 GLint col
, GLint row
, GLint img
,
1135 GLfloat
*texelOut
);
1138 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1139 GLint col
, GLint row
, GLint img
,
1143 * TexImage store function. This is called by the glTex[Sub]Image
1144 * functions and is responsible for converting the user-specified texture
1145 * image into a specific (hardware) image format.
1147 typedef GLboolean (*StoreTexImageFunc
)(GLcontext
*ctx
, GLuint dims
,
1148 GLenum baseInternalFormat
,
1149 const struct gl_texture_format
*dstFormat
,
1151 GLint dstXoffset
, GLint dstYoffset
, GLint dstZoffset
,
1152 GLint dstRowStride
, GLint dstImageStride
,
1153 GLint srcWidth
, GLint srcHeight
, GLint srcDepth
,
1154 GLenum srcFormat
, GLenum srcType
,
1155 const GLvoid
*srcAddr
,
1156 const struct gl_pixelstore_attrib
*srcPacking
);
1161 * Texture format record
1163 struct gl_texture_format
1165 GLint MesaFormat
; /**< One of the MESA_FORMAT_* values */
1167 GLenum BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1168 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1169 * GL_INTENSITY, GL_COLOR_INDEX or
1170 * GL_DEPTH_COMPONENT.
1172 GLenum DataType
; /**< GL_FLOAT or GL_UNSIGNED_NORMALIZED_ARB */
1173 GLubyte RedBits
; /**< Bits per texel component */
1174 GLubyte GreenBits
; /**< These are just rough approximations for */
1175 GLubyte BlueBits
; /**< compressed texture formats. */
1177 GLubyte LuminanceBits
;
1178 GLubyte IntensityBits
;
1181 GLubyte StencilBits
; /**< GL_EXT_packed_depth_stencil */
1183 GLuint TexelBytes
; /**< Bytes per texel, 0 if compressed format */
1185 StoreTexImageFunc StoreImage
;
1188 * \name Texel fetch function pointers
1191 FetchTexelFuncC FetchTexel1D
;
1192 FetchTexelFuncC FetchTexel2D
;
1193 FetchTexelFuncC FetchTexel3D
;
1194 FetchTexelFuncF FetchTexel1Df
;
1195 FetchTexelFuncF FetchTexel2Df
;
1196 FetchTexelFuncF FetchTexel3Df
;
1199 StoreTexelFunc StoreTexel
;
1204 * Texture image state. Describes the dimensions of a texture image,
1205 * the texel format and pointers to Texel Fetch functions.
1207 struct gl_texture_image
1209 GLenum Format
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1210 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1211 * GL_INTENSITY, GL_COLOR_INDEX,
1212 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1213 * only. Used for choosing TexEnv arithmetic.
1215 GLint IntFormat
; /**< Internal format as given by the user */
1216 GLuint Border
; /**< 0 or 1 */
1217 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1218 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1219 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1220 GLuint RowStride
; /**< == Width unless IsClientData and padded */
1221 GLuint Width2
; /**< = Width - 2*Border */
1222 GLuint Height2
; /**< = Height - 2*Border */
1223 GLuint Depth2
; /**< = Depth - 2*Border */
1224 GLuint WidthLog2
; /**< = log2(Width2) */
1225 GLuint HeightLog2
; /**< = log2(Height2) */
1226 GLuint DepthLog2
; /**< = log2(Depth2) */
1227 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1228 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1229 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1230 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1231 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1232 GLboolean IsClientData
; /**< Data owned by client? */
1233 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1235 const struct gl_texture_format
*TexFormat
;
1237 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1239 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1240 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1242 GLboolean IsCompressed
; /**< GL_ARB_texture_compression */
1243 GLuint CompressedSize
; /**< GL_ARB_texture_compression */
1246 * \name For device driver:
1249 void *DriverData
; /**< Arbitrary device driver data */
1255 * Indexes for cube map faces.
1258 #define FACE_POS_X 0
1259 #define FACE_NEG_X 1
1260 #define FACE_POS_Y 2
1261 #define FACE_NEG_Y 3
1262 #define FACE_POS_Z 4
1263 #define FACE_NEG_Z 5
1269 * Texture object state. Contains the array of mipmap images, border color,
1270 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1273 struct gl_texture_object
1275 _glthread_Mutex Mutex
; /**< for thread safety */
1276 GLint RefCount
; /**< reference count */
1277 GLuint Name
; /**< the user-visible texture object ID */
1278 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1279 GLfloat Priority
; /**< in [0,1] */
1280 GLfloat BorderColor
[4]; /**< unclamped */
1281 GLchan _BorderChan
[4]; /**< clamped, as GLchan */
1282 GLenum WrapS
; /**< S-axis texture image wrap mode */
1283 GLenum WrapT
; /**< T-axis texture image wrap mode */
1284 GLenum WrapR
; /**< R-axis texture image wrap mode */
1285 GLenum MinFilter
; /**< minification filter */
1286 GLenum MagFilter
; /**< magnification filter */
1287 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1288 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1289 GLfloat LodBias
; /**< OpenGL 1.4 */
1290 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1291 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1292 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1293 GLboolean CompareFlag
; /**< GL_SGIX_shadow */
1294 GLenum CompareOperator
; /**< GL_SGIX_shadow */
1295 GLfloat ShadowAmbient
; /**< GL_ARB_shadow_ambient */
1296 GLenum CompareMode
; /**< GL_ARB_shadow */
1297 GLenum CompareFunc
; /**< GL_ARB_shadow */
1298 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1299 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1300 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1301 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1302 GLboolean _IsPowerOfTwo
; /**< Are all image dimensions powers of two? */
1303 GLboolean Complete
; /**< Is texture object complete? */
1305 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1306 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1308 /** GL_EXT_paletted_texture */
1309 struct gl_color_table Palette
;
1313 * \name For device driver.
1314 * Note: instead of attaching driver data to this pointer, it's preferable
1315 * to instead use this struct as a base class for your own texture object
1316 * class. Driver->NewTextureObject() can be used to implement the
1319 void *DriverData
; /**< Arbitrary device driver data */
1324 * Texture combine environment state.
1327 * If GL_NV_texture_env_combine4 is ever supported, the arrays in this
1328 * structure will need to be expanded for 4 elements.
1330 struct gl_tex_env_combine_state
1332 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1333 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1334 GLenum SourceRGB
[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1335 GLenum SourceA
[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1336 GLenum OperandRGB
[3]; /**< SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
1337 GLenum OperandA
[3]; /**< SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
1338 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1339 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1340 GLuint _NumArgsRGB
; /**< Number of inputs used for the combine mode. */
1341 GLuint _NumArgsA
; /**< Number of inputs used for the combine mode. */
1346 * Texture unit state. Contains enable flags, texture environment/function/
1347 * combiners, texgen state, pointers to current texture objects and
1348 * post-filter color tables.
1350 struct gl_texture_unit
1352 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1353 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1355 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1356 GLfloat EnvColor
[4];
1357 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1358 /** \name Tex coord generation mode
1359 * Either GL_OBJECT_LINEAR, GL_EYE_LINEAR or GL_SPHERE_MAP. */
1366 GLbitfield _GenBitS
;
1367 GLbitfield _GenBitT
;
1368 GLbitfield _GenBitR
;
1369 GLbitfield _GenBitQ
;
1370 GLbitfield _GenFlags
; /**< bitwise or of GenBit[STRQ] */
1371 GLfloat ObjectPlaneS
[4];
1372 GLfloat ObjectPlaneT
[4];
1373 GLfloat ObjectPlaneR
[4];
1374 GLfloat ObjectPlaneQ
[4];
1375 GLfloat EyePlaneS
[4];
1376 GLfloat EyePlaneT
[4];
1377 GLfloat EyePlaneR
[4];
1378 GLfloat EyePlaneQ
[4];
1379 GLfloat LodBias
; /**< for biasing mipmap levels */
1382 * \name GL_EXT_texture_env_combine
1384 struct gl_tex_env_combine_state Combine
;
1387 * Derived state based on \c EnvMode and the \c BaseFormat of the
1388 * currently enabled texture.
1390 struct gl_tex_env_combine_state _EnvMode
;
1393 * Currently enabled combiner state. This will point to either
1394 * \c Combine or \c _EnvMode.
1396 struct gl_tex_env_combine_state
*_CurrentCombine
;
1398 struct gl_texture_object
*Current1D
;
1399 struct gl_texture_object
*Current2D
;
1400 struct gl_texture_object
*Current3D
;
1401 struct gl_texture_object
*CurrentCubeMap
; /**< GL_ARB_texture_cube_map */
1402 struct gl_texture_object
*CurrentRect
; /**< GL_NV_texture_rectangle */
1404 struct gl_texture_object
*_Current
; /**< Points to really enabled tex obj */
1406 struct gl_texture_object Saved1D
; /**< only used by glPush/PopAttrib */
1407 struct gl_texture_object Saved2D
;
1408 struct gl_texture_object Saved3D
;
1409 struct gl_texture_object SavedCubeMap
;
1410 struct gl_texture_object SavedRect
;
1412 /* GL_SGI_texture_color_table */
1413 struct gl_color_table ColorTable
;
1414 struct gl_color_table ProxyColorTable
;
1415 GLboolean ColorTableEnabled
;
1418 struct texenvprog_cache
{
1422 struct texenvprog_cache
*next
;
1426 * Texture attribute group (GL_TEXTURE_BIT).
1428 struct gl_texture_attrib
1434 GLuint CurrentUnit
; /**< Active texture unit */
1435 GLbitfield _EnabledUnits
; /**< one bit set for each really-enabled unit */
1436 GLbitfield _EnabledCoordUnits
; /**< one bit per enabled coordinate unit */
1437 GLbitfield _GenFlags
; /**< for texgen */
1438 GLbitfield _TexGenEnabled
;
1439 GLbitfield _TexMatEnabled
;
1442 struct gl_texture_unit Unit
[MAX_TEXTURE_UNITS
];
1444 struct gl_texture_object
*Proxy1D
;
1445 struct gl_texture_object
*Proxy2D
;
1446 struct gl_texture_object
*Proxy3D
;
1447 struct gl_texture_object
*ProxyCubeMap
;
1448 struct gl_texture_object
*ProxyRect
;
1450 /** GL_EXT_shared_texture_palette */
1451 GLboolean SharedPalette
;
1452 struct gl_color_table Palette
;
1454 /** Cached texenv fragment programs */
1455 struct texenvprog_cache
*env_fp_cache
;
1460 * Transformation attribute group (GL_TRANSFORM_BIT).
1462 struct gl_transform_attrib
1464 GLenum MatrixMode
; /**< Matrix mode */
1465 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1466 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1467 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1468 GLboolean Normalize
; /**< Normalize all normals? */
1469 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1470 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1472 GLboolean CullVertexFlag
; /**< True if GL_CULL_VERTEX_EXT is enabled */
1473 GLfloat CullEyePos
[4];
1474 GLfloat CullObjPos
[4];
1479 * Viewport attribute group (GL_VIEWPORT_BIT).
1481 struct gl_viewport_attrib
1483 GLint X
, Y
; /**< position */
1484 GLsizei Width
, Height
; /**< size */
1485 GLfloat Near
, Far
; /**< Depth buffer range */
1486 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1491 * Node for the attribute stack.
1493 struct gl_attrib_node
1497 struct gl_attrib_node
*next
;
1502 * GL_ARB_vertex/pixel_buffer_object buffer object
1504 struct gl_buffer_object
1510 GLvoid
*Pointer
; /**< Only valid while buffer is mapped */
1511 GLsizeiptrARB Size
; /**< Size of storage in bytes */
1512 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1513 GLboolean OnCard
; /**< Is buffer in VRAM? (hardware drivers) */
1519 * Client pixel packing/unpacking attributes
1521 struct gl_pixelstore_attrib
1527 GLint ImageHeight
; /**< for GL_EXT_texture3D */
1528 GLint SkipImages
; /**< for GL_EXT_texture3D */
1529 GLboolean SwapBytes
;
1531 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1532 GLboolean Invert
; /**< GL_MESA_pack_invert */
1533 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1537 #define CA_CLIENT_DATA 0x1 /**< Data not allocated by mesa */
1541 * Client vertex array attributes
1543 struct gl_client_array
1545 GLint Size
; /**< components per element (1,2,3,4) */
1546 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1547 GLsizei Stride
; /**< user-specified stride */
1548 GLsizei StrideB
; /**< actual stride in bytes */
1549 const GLubyte
*Ptr
; /**< Points to array data */
1550 GLbitfield Enabled
; /**< one of the _NEW_ARRAY_ bits */
1551 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1553 /**< GL_ARB_vertex_buffer_object */
1554 struct gl_buffer_object
*BufferObj
;
1562 * Vertex array state
1564 struct gl_array_attrib
1566 struct gl_client_array Vertex
; /**< client data descriptors */
1567 struct gl_client_array Normal
;
1568 struct gl_client_array Color
;
1569 struct gl_client_array SecondaryColor
;
1570 struct gl_client_array FogCoord
;
1571 struct gl_client_array Index
;
1572 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1573 struct gl_client_array EdgeFlag
;
1575 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
]; /**< GL_NV_vertex_program */
1577 GLint ActiveTexture
; /**< Client Active Texture */
1578 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1579 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1581 GLbitfield _Enabled
; /**< _NEW_ARRAY_* - bit set if array enabled */
1582 GLbitfield NewState
; /**< _NEW_ARRAY_* */
1584 #if FEATURE_ARB_vertex_buffer_object
1585 struct gl_buffer_object
*NullBufferObj
;
1586 struct gl_buffer_object
*ArrayBufferObj
;
1587 struct gl_buffer_object
*ElementArrayBufferObj
;
1589 GLuint _MaxElement
; /* Min of all enabled array's maxes */
1594 * Feedback buffer state
1599 GLbitfield _Mask
; /* FB_* bits */
1607 * Selection buffer state
1611 GLuint
*Buffer
; /**< selection buffer */
1612 GLuint BufferSize
; /**< size of the selection buffer */
1613 GLuint BufferCount
; /**< number of values in the selection buffer */
1614 GLuint Hits
; /**< number of records in the selection buffer */
1615 GLuint NameStackDepth
; /**< name stack depth */
1616 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1617 GLboolean HitFlag
; /**< hit flag */
1618 GLfloat HitMinZ
; /**< minimum hit depth */
1619 GLfloat HitMaxZ
; /**< maximum hit depth */
1624 * 1-D Evaluator control points
1628 GLuint Order
; /**< Number of control points */
1629 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1630 GLfloat
*Points
; /**< Points to contiguous control points */
1635 * 2-D Evaluator control points
1639 GLuint Uorder
; /**< Number of control points in U dimension */
1640 GLuint Vorder
; /**< Number of control points in V dimension */
1643 GLfloat
*Points
; /**< Points to contiguous control points */
1648 * All evaluator control point state
1650 struct gl_evaluators
1656 struct gl_1d_map Map1Vertex3
;
1657 struct gl_1d_map Map1Vertex4
;
1658 struct gl_1d_map Map1Index
;
1659 struct gl_1d_map Map1Color4
;
1660 struct gl_1d_map Map1Normal
;
1661 struct gl_1d_map Map1Texture1
;
1662 struct gl_1d_map Map1Texture2
;
1663 struct gl_1d_map Map1Texture3
;
1664 struct gl_1d_map Map1Texture4
;
1665 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1672 struct gl_2d_map Map2Vertex3
;
1673 struct gl_2d_map Map2Vertex4
;
1674 struct gl_2d_map Map2Index
;
1675 struct gl_2d_map Map2Color4
;
1676 struct gl_2d_map Map2Normal
;
1677 struct gl_2d_map Map2Texture1
;
1678 struct gl_2d_map Map2Texture2
;
1679 struct gl_2d_map Map2Texture3
;
1680 struct gl_2d_map Map2Texture4
;
1681 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1687 * NV_fragment_program runtime state
1691 GLfloat Temporaries
[MAX_NV_FRAGMENT_PROGRAM_TEMPS
][4];
1692 GLfloat Inputs
[MAX_NV_FRAGMENT_PROGRAM_INPUTS
][4];
1693 GLfloat Outputs
[MAX_NV_FRAGMENT_PROGRAM_OUTPUTS
][4];
1694 GLuint CondCodes
[4];
1698 * ATI_fragment_shader runtime state
1700 #define ATI_FS_INPUT_PRIMARY 0
1701 #define ATI_FS_INPUT_SECONDARY 1
1703 /* 6 register sets - 2 inputs (primary, secondary) */
1704 struct atifs_machine
1706 GLfloat Registers
[6][4];
1707 GLfloat PrevPassRegisters
[6][4];
1708 GLfloat Inputs
[2][4];
1714 * Names of the various vertex/fragment register files
1721 PROGRAM_LOCAL_PARAM
,
1723 PROGRAM_NAMED_PARAM
,
1727 PROGRAM_UNDEFINED
/* invalid value */
1731 /** Vertex and fragment instructions */
1732 struct vp_instruction
;
1733 struct fp_instruction
;
1734 struct atifs_instruction
;
1735 struct atifs_setupinst
;
1736 struct program_parameter_list
;
1740 * Base class for any kind of program object
1745 GLubyte
*String
; /**< Null-terminated program text */
1748 GLenum Format
; /**< String encoding format */
1750 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1751 GLuint NumInstructions
; /* GL_ARB_vertex/fragment_program */
1752 GLuint NumTemporaries
;
1753 GLuint NumParameters
;
1754 GLuint NumAttributes
;
1755 GLuint NumAddressRegs
;
1759 /** Vertex program object */
1760 struct vertex_program
1762 struct program Base
; /* base class */
1763 struct vp_instruction
*Instructions
; /* Compiled instructions */
1764 GLboolean IsNVProgram
; /* GL_NV_vertex_program ? */
1765 GLboolean IsPositionInvariant
; /* GL_NV_vertex_program1_1 */
1766 GLbitfield InputsRead
; /* Bitmask of which input regs are read */
1767 GLbitfield OutputsWritten
; /* Bitmask of which output regs are written to */
1768 struct program_parameter_list
*Parameters
; /**< array [NumParameters] */
1769 void *TnlData
; /* should probably use Base.DriverData */
1773 /** Fragment program object */
1774 struct fragment_program
1776 struct program Base
; /**< base class */
1777 struct fp_instruction
*Instructions
; /**< Compiled instructions */
1778 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1779 GLbitfield OutputsWritten
; /**< Bitmask of which output regs are written to */
1780 GLbitfield TexturesUsed
[MAX_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_INDEX bitmask */
1781 GLuint NumAluInstructions
; /**< GL_ARB_fragment_program */
1782 GLuint NumTexInstructions
;
1783 GLuint NumTexIndirections
;
1785 struct program_parameter_list
*Parameters
; /**< array [NumParameters] */
1788 char c_str
[4096]; /* experimental... */
1793 struct ati_fragment_shader
1795 struct program Base
;
1796 struct atifs_instruction
*Instructions
[2];
1797 struct atifs_setupinst
*SetupInst
[2];
1798 GLfloat Constants
[8][4];
1799 GLuint localConstDef
;
1800 GLubyte numArithInstr
[2];
1801 GLubyte regsAssigned
[2];
1804 GLubyte last_optype
;
1805 GLboolean interpinp1
;
1811 * State common to vertex and fragment programs.
1813 struct gl_program_state
1815 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_NV */
1816 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_NV */
1821 * State vars for GL_ARB/GL_NV_vertex_program
1823 struct gl_vertex_program_state
1825 GLboolean Enabled
; /**< GL_VERTEX_PROGRAM_NV */
1826 GLboolean _Enabled
; /**< Really enabled? */
1827 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_NV */
1828 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_NV */
1829 struct vertex_program
*Current
; /**< ptr to currently bound program */
1831 GLenum TrackMatrix
[MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4];
1832 GLenum TrackMatrixTransform
[MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4];
1834 GLfloat Parameters
[MAX_NV_VERTEX_PROGRAM_PARAMS
][4]; /* Env params */
1835 /* Only used during program execution (may be moved someday): */
1836 GLfloat Temporaries
[MAX_NV_VERTEX_PROGRAM_TEMPS
][4];
1837 GLfloat Inputs
[MAX_NV_VERTEX_PROGRAM_INPUTS
][4];
1838 GLuint InputsSize
[MAX_NV_VERTEX_PROGRAM_INPUTS
];
1839 GLfloat Outputs
[MAX_NV_VERTEX_PROGRAM_OUTPUTS
][4];
1840 GLint AddressReg
[4];
1842 #if FEATURE_MESA_program_debug
1843 GLprogramcallbackMESA Callback
;
1844 GLvoid
*CallbackData
;
1845 GLboolean CallbackEnabled
;
1846 GLuint CurrentPosition
;
1852 * State for GL_ARB/NV_fragment_program
1854 struct gl_fragment_program_state
1856 GLboolean Enabled
; /* GL_VERTEX_PROGRAM_NV */
1857 GLboolean _Enabled
; /* Really enabled? */
1858 GLboolean _Active
; /* Really really enabled? */
1859 struct fragment_program
*Current
; /* ptr to currently bound program */
1860 struct fragment_program
*_Current
; /* ptr to currently active program */
1861 struct fp_machine Machine
; /* machine state */
1862 GLfloat Parameters
[MAX_NV_FRAGMENT_PROGRAM_PARAMS
][4]; /* Env params */
1864 #if FEATURE_MESA_program_debug
1865 GLprogramcallbackMESA Callback
;
1866 GLvoid
*CallbackData
;
1867 GLboolean CallbackEnabled
;
1868 GLuint CurrentPosition
;
1874 * State for GL_ATI_fragment_shader
1876 struct gl_ati_fragment_shader_state
1880 GLboolean Compiling
;
1881 GLfloat globalConstants
[8][4];
1882 struct atifs_machine Machine
; /* machine state */
1883 struct ati_fragment_shader
*Current
;
1887 struct gl_query_object
1890 GLuint Result
; /* the counter */
1891 GLboolean Active
; /* inside Begin/EndQuery */
1892 GLboolean Ready
; /* result is ready */
1896 struct gl_query_state
1898 struct _mesa_HashTable
*QueryObjects
;
1899 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
1900 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
1905 * gl2 unique interface identifier.
1906 * Each gl2 interface has its own interface id used for object queries.
1910 UIID_UNKNOWN
, /* supported by all objects */
1911 UIID_GENERIC
, /* generic object */
1912 UIID_CONTAINER
, /* contains generic objects */
1913 UIID_SHADER
, /* shader object */
1914 UIID_FRAGMENT_SHADER
, /* fragment shader */
1915 UIID_VERTEX_SHADER
, /* vertex shader */
1916 UIID_PROGRAM
, /* program object */
1917 UIID_3DLABS_SHHANDLE
/* encapsulates 3dlabs' ShHandle */
1920 struct gl2_unknown_intf
1922 GLvoid (* AddRef
) (struct gl2_unknown_intf
**);
1923 GLvoid (* Release
) (struct gl2_unknown_intf
**);
1924 struct gl2_unknown_intf
**(* QueryInterface
) (struct gl2_unknown_intf
**, enum gl2_uiid uiid
);
1927 struct gl2_generic_intf
1929 struct gl2_unknown_intf _unknown
;
1930 GLvoid (* Delete
) (struct gl2_generic_intf
**);
1931 GLenum (* GetType
) (struct gl2_generic_intf
**);
1932 GLhandleARB (* GetName
) (struct gl2_generic_intf
**);
1933 GLboolean (* GetDeleteStatus
) (struct gl2_generic_intf
**);
1934 const GLcharARB
*(* GetInfoLog
) (struct gl2_generic_intf
**);
1937 struct gl2_container_intf
1939 struct gl2_generic_intf _generic
;
1940 GLboolean (* Attach
) (struct gl2_container_intf
**, struct gl2_generic_intf
**);
1941 GLboolean (* Detach
) (struct gl2_container_intf
**, struct gl2_generic_intf
**);
1942 GLsizei (* GetAttachedCount
) (struct gl2_container_intf
**);
1943 struct gl2_generic_intf
**(* GetAttached
) (struct gl2_container_intf
**, GLuint
);
1946 struct gl2_shader_intf
1948 struct gl2_generic_intf _generic
;
1949 GLenum (* GetSubType
) (struct gl2_shader_intf
**);
1950 GLboolean (* GetCompileStatus
) (struct gl2_shader_intf
**);
1951 GLvoid (* SetSource
) (struct gl2_shader_intf
**, GLcharARB
*, GLint
*, GLsizei
);
1952 const GLcharARB
*(* GetSource
) (struct gl2_shader_intf
**);
1953 GLvoid (* Compile
) (struct gl2_shader_intf
**);
1956 struct gl2_program_intf
1958 struct gl2_container_intf _container
;
1959 GLboolean (* GetLinkStatus
) (struct gl2_program_intf
**);
1960 GLboolean (* GetValidateStatus
) (struct gl2_program_intf
**);
1961 GLvoid (* Link
) (struct gl2_program_intf
**);
1962 GLvoid (* Validate
) (struct gl2_program_intf
**);
1965 struct gl2_fragment_shader_intf
1967 struct gl2_shader_intf _shader
;
1970 struct gl2_vertex_shader_intf
1972 struct gl2_shader_intf _shader
;
1975 struct gl2_3dlabs_shhandle_intf
1977 struct gl2_unknown_intf _unknown
;
1978 GLvoid
*(* GetShHandle
) (struct gl2_3dlabs_shhandle_intf
**);
1981 struct gl_shader_objects_state
1983 struct gl2_program_intf
**current_program
;
1988 * State which can be shared by multiple contexts:
1990 struct gl_shared_state
1992 _glthread_Mutex Mutex
; /**< for thread safety */
1993 GLint RefCount
; /**< Reference count */
1994 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
1995 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
1998 * \name Default texture objects (shared by all multi-texture units)
2001 struct gl_texture_object
*Default1D
;
2002 struct gl_texture_object
*Default2D
;
2003 struct gl_texture_object
*Default3D
;
2004 struct gl_texture_object
*DefaultCubeMap
;
2005 struct gl_texture_object
*DefaultRect
;
2009 * \name Vertex/fragment programs
2012 struct _mesa_HashTable
*Programs
;
2013 #if FEATURE_ARB_vertex_program
2014 struct program
*DefaultVertexProgram
;
2016 #if FEATURE_ARB_fragment_program
2017 struct program
*DefaultFragmentProgram
;
2019 #if FEATURE_ATI_fragment_shader
2020 struct program
*DefaultFragmentShader
;
2024 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
2025 struct _mesa_HashTable
*BufferObjects
;
2028 struct _mesa_HashTable
*GL2Objects
;
2030 #if FEATURE_EXT_framebuffer_object
2031 struct _mesa_HashTable
*RenderBuffers
;
2032 struct _mesa_HashTable
*FrameBuffers
;
2035 void *DriverData
; /**< Device driver shared state */
2042 * A renderbuffer stores colors or depth values or stencil values.
2043 * A framebuffer object will have a collection of these.
2044 * Data are read/written to the buffer with a handful of Get/Put functions.
2046 * Instances of this object are allocated with the Driver's NewRenderbuffer
2047 * hook. Drivers will likely wrap this class inside a driver-specific
2048 * class to simulate inheritance.
2050 struct gl_renderbuffer
2054 GLuint Width
, Height
;
2055 GLenum InternalFormat
; /* The user-specified value */
2056 GLenum _BaseFormat
; /* Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or */
2057 /* GL_STENCIL_INDEX. */
2058 GLenum DataType
; /* Type of values passed to the Get/Put functions */
2059 GLubyte RedBits
; /**< Bits per image component */
2065 GLubyte StencilBits
;
2068 /* Used to wrap one renderbuffer around another: */
2069 struct gl_renderbuffer
*Wrapped
;
2071 /* Delete this renderbuffer */
2072 void (*Delete
)(struct gl_renderbuffer
*rb
);
2074 /* Allocate new storage for this renderbuffer */
2075 GLboolean (*AllocStorage
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2076 GLenum internalFormat
,
2077 GLuint width
, GLuint height
);
2079 /* Lock/Unlock are called before/after calling the Get/Put functions.
2080 * Not sure this is the right place for these yet.
2081 void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2082 void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2085 /* Return a pointer to the element/pixel at (x,y).
2086 * Should return NULL if the buffer memory can't be directly addressed.
2088 void *(*GetPointer
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2091 /* Get/Read a row of values.
2092 * The values will be of format _BaseFormat and type DataType.
2094 void (*GetRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2095 GLint x
, GLint y
, void *values
);
2097 /* Get/Read values at arbitrary locations.
2098 * The values will be of format _BaseFormat and type DataType.
2100 void (*GetValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2101 const GLint x
[], const GLint y
[], void *values
);
2103 /* Put/Write a row of values.
2104 * The values will be of format _BaseFormat and type DataType.
2106 void (*PutRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2107 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2109 /* Put/Write a row of RGB values. This is a special-case routine that's
2110 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2111 * a common case for glDrawPixels and some triangle routines.
2112 * The values will be of format GL_RGB and type DataType.
2114 void (*PutRowRGB
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2115 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2118 /* Put/Write a row of identical values.
2119 * The values will be of format _BaseFormat and type DataType.
2121 void (*PutMonoRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2122 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2124 /* Put/Write values at arbitrary locations.
2125 * The values will be of format _BaseFormat and type DataType.
2127 void (*PutValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2128 const GLint x
[], const GLint y
[], const void *values
,
2129 const GLubyte
*mask
);
2130 /* Put/Write identical values at arbitrary locations.
2131 * The values will be of format _BaseFormat and type DataType.
2133 void (*PutMonoValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2134 GLuint count
, const GLint x
[], const GLint y
[],
2135 const void *value
, const GLubyte
*mask
);
2140 * A renderbuffer attachment point points to either a texture object
2141 * (and specifies a mipmap level, cube face or 3D texture slice) or
2142 * points to a renderbuffer.
2144 struct gl_renderbuffer_attachment
2146 GLenum Type
; /* GL_NONE or GL_TEXTURE or GL_RENDERBUFFER_EXT */
2149 /* IF Type == GL_RENDERBUFFER_EXT: */
2150 struct gl_renderbuffer
*Renderbuffer
;
2152 /* IF Type == GL_TEXTURE: */
2153 struct gl_texture_object
*Texture
;
2154 GLuint TextureLevel
;
2155 GLuint CubeMapFace
; /* 0 .. 5, for cube map textures */
2156 GLuint Zoffset
; /* for 3D textures */
2161 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2162 * In C++ terms, think of this as a base class from which device drivers
2163 * will make derived classes.
2165 struct gl_framebuffer
2167 GLuint Name
; /* if zero, this is a window system framebuffer */
2170 GLvisual Visual
; /**< The corresponding visual */
2172 GLboolean Initialized
;
2174 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2176 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2178 GLint _Xmin
, _Xmax
; /**< inclusive */
2179 GLint _Ymin
, _Ymax
; /**< exclusive */
2182 /** \name Derived Z buffer stuff */
2184 GLuint _DepthMax
; /**< Max depth buffer value */
2185 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2186 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2189 GLenum _Status
; /* One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2191 /* Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2192 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2194 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2195 * attribute group and GL_PIXEL attribute group, respectively.
2197 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2198 GLenum ColorReadBuffer
;
2200 /* These are computed from ColorDrawBuffer and ColorReadBuffer */
2201 GLbitfield _ColorDrawBufferMask
[MAX_DRAW_BUFFERS
]; /* Mask of BUFFER_BIT_* flags */
2202 GLint _ColorReadBufferIndex
; /* -1 = None */
2204 /* These are computed from _ColorDrawBufferMask and _ColorReadBufferIndex */
2205 GLuint _NumColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2206 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
][4];
2207 struct gl_renderbuffer
*_ColorReadBuffer
;
2209 /** Delete this framebuffer */
2210 void (*Delete
)(struct gl_framebuffer
*fb
);
2215 * Constants which may be overridden by device driver during context creation
2216 * but are never changed after that.
2220 GLint MaxTextureLevels
; /**< Maximum number of allowed mipmap levels. */
2221 GLint Max3DTextureLevels
; /**< Maximum number of allowed mipmap levels for 3D texture targets. */
2222 GLint MaxCubeTextureLevels
; /**< Maximum number of allowed mipmap levels for GL_ARB_texture_cube_map */
2223 GLint MaxTextureRectSize
; /* GL_NV_texture_rectangle */
2224 GLuint MaxTextureCoordUnits
;
2225 GLuint MaxTextureImageUnits
;
2226 GLuint MaxTextureUnits
; /* = MAX(CoordUnits, ImageUnits) */
2227 GLfloat MaxTextureMaxAnisotropy
; /* GL_EXT_texture_filter_anisotropic */
2228 GLfloat MaxTextureLodBias
; /* GL_EXT_texture_lod_bias */
2229 GLuint MaxArrayLockSize
;
2231 GLfloat MinPointSize
, MaxPointSize
; /* aliased */
2232 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /* antialiased */
2233 GLfloat PointSizeGranularity
;
2234 GLfloat MinLineWidth
, MaxLineWidth
; /* aliased */
2235 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /* antialiased */
2236 GLfloat LineWidthGranularity
;
2237 GLuint MaxColorTableSize
;
2238 GLuint MaxConvolutionWidth
;
2239 GLuint MaxConvolutionHeight
;
2240 GLuint MaxClipPlanes
;
2242 GLfloat MaxShininess
; /* GL_NV_light_max_exponent */
2243 GLfloat MaxSpotExponent
; /* GL_NV_light_max_exponent */
2244 GLuint MaxViewportWidth
, MaxViewportHeight
;
2245 /* GL_ARB_vertex_program */
2246 GLuint MaxVertexProgramInstructions
;
2247 GLuint MaxVertexProgramAttribs
;
2248 GLuint MaxVertexProgramTemps
;
2249 GLuint MaxVertexProgramLocalParams
;
2250 GLuint MaxVertexProgramEnvParams
;
2251 GLuint MaxVertexProgramAddressRegs
;
2252 /* GL_ARB_fragment_program */
2253 GLuint MaxFragmentProgramInstructions
;
2254 GLuint MaxFragmentProgramAttribs
;
2255 GLuint MaxFragmentProgramTemps
;
2256 GLuint MaxFragmentProgramLocalParams
;
2257 GLuint MaxFragmentProgramEnvParams
;
2258 GLuint MaxFragmentProgramAddressRegs
;
2259 GLuint MaxFragmentProgramAluInstructions
;
2260 GLuint MaxFragmentProgramTexInstructions
;
2261 GLuint MaxFragmentProgramTexIndirections
;
2262 /* vertex or fragment program */
2263 GLuint MaxProgramMatrices
;
2264 GLuint MaxProgramMatrixStackDepth
;
2265 /* vertex array / buffer object bounds checking */
2266 GLboolean CheckArrayBounds
;
2267 /* GL_ARB_draw_buffers */
2268 GLuint MaxDrawBuffers
;
2269 /* GL_OES_read_format */
2270 GLenum ColorReadFormat
;
2271 GLenum ColorReadType
;
2272 /* GL_EXT_framebuffer_object */
2273 GLuint MaxColorAttachments
;
2274 GLuint MaxRenderbufferSize
;
2279 * Enable flag for each OpenGL extension. Different device drivers will
2280 * enable different extensions at runtime.
2282 struct gl_extensions
2285 * \name Flags to quickly test if certain extensions are available.
2287 * Not every extension needs to have such a flag, but it's encouraged.
2290 GLboolean dummy
; /* don't remove this! */
2291 GLboolean ARB_depth_texture
;
2292 GLboolean ARB_draw_buffers
;
2293 GLboolean ARB_fragment_program
;
2294 GLboolean ARB_fragment_shader
;
2295 GLboolean ARB_half_float_pixel
;
2296 GLboolean ARB_imaging
;
2297 GLboolean ARB_multisample
;
2298 GLboolean ARB_multitexture
;
2299 GLboolean ARB_occlusion_query
;
2300 GLboolean ARB_point_sprite
;
2301 GLboolean ARB_shader_objects
;
2302 GLboolean ARB_shading_language_100
;
2303 GLboolean ARB_shadow
;
2304 GLboolean ARB_texture_border_clamp
;
2305 GLboolean ARB_texture_compression
;
2306 GLboolean ARB_texture_cube_map
;
2307 GLboolean ARB_texture_env_combine
;
2308 GLboolean ARB_texture_env_crossbar
;
2309 GLboolean ARB_texture_env_dot3
;
2310 GLboolean ARB_texture_float
;
2311 GLboolean ARB_texture_mirrored_repeat
;
2312 GLboolean ARB_texture_non_power_of_two
;
2313 GLboolean ARB_transpose_matrix
;
2314 GLboolean ARB_vertex_buffer_object
;
2315 GLboolean ARB_vertex_program
;
2316 GLboolean ARB_vertex_shader
;
2317 GLboolean ARB_window_pos
;
2320 GLboolean EXT_blend_color
;
2321 GLboolean EXT_blend_equation_separate
;
2322 GLboolean EXT_blend_func_separate
;
2323 GLboolean EXT_blend_logic_op
;
2324 GLboolean EXT_blend_minmax
;
2325 GLboolean EXT_blend_subtract
;
2326 GLboolean EXT_clip_volume_hint
;
2327 GLboolean EXT_cull_vertex
;
2328 GLboolean EXT_convolution
;
2329 GLboolean EXT_compiled_vertex_array
;
2330 GLboolean EXT_copy_texture
;
2331 GLboolean EXT_depth_bounds_test
;
2332 GLboolean EXT_draw_range_elements
;
2333 GLboolean EXT_framebuffer_object
;
2334 GLboolean EXT_fog_coord
;
2335 GLboolean EXT_histogram
;
2336 GLboolean EXT_multi_draw_arrays
;
2337 GLboolean EXT_paletted_texture
;
2338 GLboolean EXT_packed_depth_stencil
;
2339 GLboolean EXT_packed_pixels
;
2340 GLboolean EXT_pixel_buffer_object
;
2341 GLboolean EXT_point_parameters
;
2342 GLboolean EXT_polygon_offset
;
2343 GLboolean EXT_rescale_normal
;
2344 GLboolean EXT_shadow_funcs
;
2345 GLboolean EXT_secondary_color
;
2346 GLboolean EXT_separate_specular_color
;
2347 GLboolean EXT_shared_texture_palette
;
2348 GLboolean EXT_stencil_wrap
;
2349 GLboolean EXT_stencil_two_side
;
2350 GLboolean EXT_subtexture
;
2351 GLboolean EXT_texture
;
2352 GLboolean EXT_texture_object
;
2353 GLboolean EXT_texture3D
;
2354 GLboolean EXT_texture_compression_s3tc
;
2355 GLboolean EXT_texture_env_add
;
2356 GLboolean EXT_texture_env_combine
;
2357 GLboolean EXT_texture_env_dot3
;
2358 GLboolean EXT_texture_filter_anisotropic
;
2359 GLboolean EXT_texture_lod_bias
;
2360 GLboolean EXT_texture_mirror_clamp
;
2361 GLboolean EXT_timer_query
;
2362 GLboolean EXT_vertex_array
;
2363 GLboolean EXT_vertex_array_set
;
2364 /* vendor extensions */
2365 GLboolean APPLE_client_storage
;
2366 GLboolean APPLE_packed_pixels
;
2367 GLboolean ATI_texture_mirror_once
;
2368 GLboolean ATI_texture_env_combine3
;
2369 GLboolean ATI_fragment_shader
;
2370 GLboolean IBM_rasterpos_clip
;
2371 GLboolean IBM_multimode_draw_arrays
;
2372 GLboolean MESA_pack_invert
;
2373 GLboolean MESA_packed_depth_stencil
;
2374 GLboolean MESA_program_debug
;
2375 GLboolean MESA_resize_buffers
;
2376 GLboolean MESA_ycbcr_texture
;
2377 GLboolean NV_blend_square
;
2378 GLboolean NV_fragment_program
;
2379 GLboolean NV_light_max_exponent
;
2380 GLboolean NV_point_sprite
;
2381 GLboolean NV_texgen_reflection
;
2382 GLboolean NV_texture_rectangle
;
2383 GLboolean NV_vertex_program
;
2384 GLboolean NV_vertex_program1_1
;
2385 GLboolean OES_read_format
;
2386 GLboolean SGI_color_matrix
;
2387 GLboolean SGI_color_table
;
2388 GLboolean SGI_texture_color_table
;
2389 GLboolean SGIS_generate_mipmap
;
2390 GLboolean SGIS_pixel_texture
;
2391 GLboolean SGIS_texture_edge_clamp
;
2392 GLboolean SGIS_texture_lod
;
2393 GLboolean SGIX_depth_texture
;
2394 GLboolean SGIX_pixel_texture
;
2395 GLboolean SGIX_shadow
;
2396 GLboolean SGIX_shadow_ambient
; /* or GL_ARB_shadow_ambient */
2397 GLboolean TDFX_texture_compression_FXT1
;
2400 /* The extension string */
2401 const GLubyte
*String
;
2406 * A stack of matrices (projection, modelview, color, texture, etc).
2410 GLmatrix
*Top
; /**< points into Stack */
2411 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2412 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2413 GLuint MaxDepth
; /**< size of Stack[] array */
2414 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2419 * \name Bits for image transfer operations
2421 * \sa __GLcontextRec::ImageTransferState.
2424 #define IMAGE_SCALE_BIAS_BIT 0x1
2425 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2426 #define IMAGE_MAP_COLOR_BIT 0x4
2427 #define IMAGE_COLOR_TABLE_BIT 0x8
2428 #define IMAGE_CONVOLUTION_BIT 0x10
2429 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2430 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2431 #define IMAGE_COLOR_MATRIX_BIT 0x80
2432 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2433 #define IMAGE_HISTOGRAM_BIT 0x200
2434 #define IMAGE_MIN_MAX_BIT 0x400
2435 #define IMAGE_CLAMP_BIT 0x800 /* extra */
2438 /** Pixel Transfer ops up to convolution */
2439 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2440 IMAGE_SHIFT_OFFSET_BIT | \
2441 IMAGE_MAP_COLOR_BIT | \
2442 IMAGE_COLOR_TABLE_BIT)
2444 /** Pixel transfer ops after convolution */
2445 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2446 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2447 IMAGE_COLOR_MATRIX_BIT | \
2448 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2449 IMAGE_HISTOGRAM_BIT | \
2455 * \name Bits to indicate what state has changed.
2460 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2461 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2462 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2463 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2464 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2465 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2466 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2467 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2468 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2469 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2470 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2471 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2472 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2473 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2474 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2475 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2476 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2477 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2478 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2479 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2480 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2481 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2482 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2483 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2484 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2485 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2486 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2487 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2493 * \name Bits to track array state changes
2495 * Also used to summarize array enabled.
2498 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2499 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2500 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2501 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2502 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2503 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2504 #define _NEW_ARRAY_INDEX VERT_BIT_SIX
2505 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_SEVEN
2506 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2507 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2508 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2509 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2510 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2511 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2512 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2513 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2514 #define _NEW_ARRAY_ATTRIB_0 0x10000 /* start at bit 16 */
2515 #define _NEW_ARRAY_ALL 0xffffffff
2518 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2519 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2524 * \name A bunch of flags that we think might be useful to drivers.
2526 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2529 #define DD_FLATSHADE 0x1
2530 #define DD_SEPARATE_SPECULAR 0x2
2531 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2532 #define DD_TRI_LIGHT_TWOSIDE 0x8
2533 #define DD_TRI_UNFILLED 0x10
2534 #define DD_TRI_SMOOTH 0x20
2535 #define DD_TRI_STIPPLE 0x40
2536 #define DD_TRI_OFFSET 0x80
2537 #define DD_LINE_SMOOTH 0x100
2538 #define DD_LINE_STIPPLE 0x200
2539 #define DD_LINE_WIDTH 0x400
2540 #define DD_POINT_SMOOTH 0x800
2541 #define DD_POINT_SIZE 0x1000
2542 #define DD_POINT_ATTEN 0x2000
2543 #define DD_TRI_TWOSTENCIL 0x4000
2548 * \name Define the state changes under which each of these bits might change
2551 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2552 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2553 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2554 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2555 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2556 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2557 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2558 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2559 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2560 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2561 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2562 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2563 #define _DD_NEW_POINT_SIZE _NEW_POINT
2564 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2568 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2573 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2576 #define _IMAGE_NEW_TRANSFER_STATE (_NEW_PIXEL | _NEW_COLOR_MATRIX)
2582 * Forward declaration of display list data types:
2585 typedef union node Node
;
2588 /* This has to be included here. */
2592 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2595 * Core Mesa's support for tnl modules:
2597 struct gl_tnl_module
2600 * Vertex format to be lazily swapped into current dispatch.
2602 const GLvertexformat
*Current
;
2605 * \name Record of functions swapped out.
2606 * On restore, only need to swap these functions back in.
2610 _glapi_proc
* location
;
2611 _glapi_proc function
;
2612 } Swapped
[NUM_VERTEX_FORMAT_ENTRIES
];
2617 /* Strictly this is a tnl/ private concept, but it doesn't seem
2618 * worthwhile adding a tnl private structure just to hold this one bit
2621 #define MESA_DLIST_DANGLING_REFS 0x1
2623 /* Provide a location where information about a display list can be
2624 * collected. Could be extended with driverPrivate structures,
2625 * etc. in the future.
2627 struct mesa_display_list
2636 * State used during display list compilation and execution.
2638 struct mesa_list_state
2640 struct mesa_display_list
*CallStack
[MAX_LIST_NESTING
];
2641 GLuint CallDepth
; /**< Current recursion calling depth */
2643 struct mesa_display_list
*CurrentList
;
2644 Node
*CurrentListPtr
; /**< Head of list being compiled */
2645 GLuint CurrentListNum
; /**< Number of the list being compiled */
2646 Node
*CurrentBlock
; /**< Pointer to current block of nodes */
2647 GLuint CurrentPos
; /**< Index into current block of nodes */
2649 GLvertexformat ListVtxfmt
;
2651 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
2652 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
2654 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
2655 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
2657 GLubyte ActiveIndex
;
2658 GLfloat CurrentIndex
;
2660 GLubyte ActiveEdgeFlag
;
2661 GLboolean CurrentEdgeFlag
;
2666 * Mesa rendering context.
2668 * This is the central context data structure for Mesa. Almost all
2669 * OpenGL state is contained in this structure.
2670 * Think of this as a base class from which device drivers will derive
2673 * The GLcontext typedef names this structure.
2675 struct __GLcontextRec
2678 * \name OS related interfaces.
2680 * These \b must be the first members of this structure, because they are
2681 * exposed to the outside world (i.e. GLX extension).
2684 __GLimports imports
;
2685 __GLexports exports
;
2688 /** State possibly shared with other contexts in the address space */
2689 struct gl_shared_state
*Shared
;
2691 /** \name API function pointer tables */
2693 struct _glapi_table
*Save
; /**< Display list save functions */
2694 struct _glapi_table
*Exec
; /**< Execute functions */
2695 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
2699 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
2700 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
2701 GLframebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
2702 GLframebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
2705 * Device driver function pointer table
2707 struct dd_function_table Driver
;
2709 void *DriverCtx
; /**< Points to device driver context/state */
2710 void *DriverMgrCtx
; /**< Points to device driver manager (optional)*/
2712 /** Core/Driver constants */
2713 struct gl_constants Const
;
2715 /** \name The various 4x4 matrix stacks */
2717 struct matrix_stack ModelviewMatrixStack
;
2718 struct matrix_stack ProjectionMatrixStack
;
2719 struct matrix_stack ColorMatrixStack
;
2720 struct matrix_stack TextureMatrixStack
[MAX_TEXTURE_COORD_UNITS
];
2721 struct matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
2722 struct matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
2725 /** Combined modelview and projection matrix */
2726 GLmatrix _ModelProjectMatrix
;
2728 /** \name Display lists */
2729 struct mesa_list_state ListState
;
2731 GLboolean ExecuteFlag
; /**< Execute GL commands? */
2732 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
2735 struct gl_extensions Extensions
;
2737 /** \name Renderer attribute stack */
2739 GLuint AttribStackDepth
;
2740 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
2743 /** \name Renderer attribute groups
2745 * We define a struct for each attribute group to make pushing and popping
2746 * attributes easy. Also it's a good organization.
2749 struct gl_accum_attrib Accum
; /**< Accumulation buffer attributes */
2750 struct gl_colorbuffer_attrib Color
; /**< Color buffers attributes */
2751 struct gl_current_attrib Current
; /**< Current attributes */
2752 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
2753 struct gl_eval_attrib Eval
; /**< Eval attributes */
2754 struct gl_fog_attrib Fog
; /**< Fog attributes */
2755 struct gl_hint_attrib Hint
; /**< Hint attributes */
2756 struct gl_light_attrib Light
; /**< Light attributes */
2757 struct gl_line_attrib Line
; /**< Line attributes */
2758 struct gl_list_attrib List
; /**< List attributes */
2759 struct gl_multisample_attrib Multisample
;
2760 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
2761 struct gl_point_attrib Point
; /**< Point attributes */
2762 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
2763 GLuint PolygonStipple
[32]; /**< Polygon stipple */
2764 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
2765 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
2766 struct gl_texture_attrib Texture
; /**< Texture attributes */
2767 struct gl_transform_attrib Transform
; /**< Transformation attributes */
2768 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
2771 /** \name Client attribute stack */
2773 GLuint ClientAttribStackDepth
;
2774 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
2777 /** \name Client attribute groups */
2779 struct gl_array_attrib Array
; /**< Vertex arrays */
2780 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
2781 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
2782 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
2785 /** \name Other assorted state (not pushed/popped on attribute stack) */
2787 struct gl_histogram_attrib Histogram
;
2788 struct gl_minmax_attrib MinMax
;
2789 struct gl_convolution_attrib Convolution1D
;
2790 struct gl_convolution_attrib Convolution2D
;
2791 struct gl_convolution_attrib Separable2D
;
2793 struct gl_evaluators EvalMap
; /**< All evaluators */
2794 struct gl_feedback Feedback
; /**< Feedback */
2795 struct gl_selection Select
; /**< Selection */
2797 struct gl_color_table ColorTable
; /**< Pre-convolution */
2798 struct gl_color_table ProxyColorTable
; /**< Pre-convolution */
2799 struct gl_color_table PostConvolutionColorTable
;
2800 struct gl_color_table ProxyPostConvolutionColorTable
;
2801 struct gl_color_table PostColorMatrixColorTable
;
2802 struct gl_color_table ProxyPostColorMatrixColorTable
;
2804 struct gl_program_state Program
; /**< for vertex or fragment progs */
2805 struct gl_vertex_program_state VertexProgram
; /**< GL_NV_vertex_program */
2806 struct gl_fragment_program_state FragmentProgram
; /**< GL_NV_fragment_program */
2807 struct gl_ati_fragment_shader_state ATIFragmentShader
; /**< GL_ATI_fragment_shader */
2809 struct fragment_program
*_TexEnvProgram
; /**< Texture state as fragment program */
2810 struct vertex_program
*_TnlProgram
; /**< Fixed func TNL state as vertex program */
2812 GLboolean _MaintainTexEnvProgram
;
2813 GLboolean _MaintainTnlProgram
;
2815 struct gl_query_state Query
; /**< GL_ARB_occlusion_query */
2817 struct gl_shader_objects_state ShaderObjects
; /* GL_ARB_shader_objects */
2820 #if FEATURE_EXT_framebuffer_object
2821 /*struct gl_framebuffer *CurrentFramebuffer;*/
2822 struct gl_renderbuffer
*CurrentRenderbuffer
;
2825 GLenum ErrorValue
; /**< Last error code */
2826 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
2827 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
2829 /** \name Derived state */
2831 GLbitfield _TriangleCaps
; /**< bitwise-or of DD_* flags */
2832 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
2833 GLfloat _EyeZDir
[3];
2834 GLfloat _ModelViewInvScale
;
2835 GLboolean _NeedEyeCoords
;
2836 GLboolean _ForceEyeCoords
;
2837 GLboolean _RotateMode
;
2838 GLenum _CurrentProgram
; /* currently executing program */
2840 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
2841 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
2844 struct gl_list_extensions ListExt
; /**< driver dlist extensions */
2847 GLuint _Facing
; /**< This is a hack for 2-sided stencil test.
2849 * We don't have a better way to communicate this value from
2850 * swrast_setup to swrast. */
2852 /** \name Color clamping (tentative part of GL_ARB_color_clamp_control) */
2854 GLboolean ClampFragmentColors
;
2855 GLboolean ClampVertexColors
;
2858 /** \name For debugging/development only */
2860 GLboolean FirstTimeCurrent
;
2863 /** Dither disable via MESA_NO_DITHER env var */
2866 /** software compression/decompression supported or not */
2867 GLboolean Mesa_DXTn
;
2869 /** Core tnl module support */
2870 struct gl_tnl_module TnlModule
;
2873 * \name Hooks for module contexts.
2875 * These will eventually live in the driver or elsewhere.
2878 void *swrast_context
;
2879 void *swsetup_context
;
2880 void *swtnl_context
;
2882 void *acache_context
;
2888 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
2889 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
2893 extern int MESA_VERBOSE
;
2894 extern int MESA_DEBUG_FLAGS
;
2895 # define MESA_FUNCTION __FUNCTION__
2897 # define MESA_VERBOSE 0
2898 # define MESA_DEBUG_FLAGS 0
2899 # define MESA_FUNCTION "a function"
2908 VERBOSE_VARRAY
= 0x0001,
2909 VERBOSE_TEXTURE
= 0x0002,
2910 VERBOSE_IMMEDIATE
= 0x0004,
2911 VERBOSE_PIPELINE
= 0x0008,
2912 VERBOSE_DRIVER
= 0x0010,
2913 VERBOSE_STATE
= 0x0020,
2914 VERBOSE_API
= 0x0040,
2915 VERBOSE_DISPLAY_LIST
= 0x0100,
2916 VERBOSE_LIGHTING
= 0x0200,
2917 VERBOSE_PRIMS
= 0x0400,
2918 VERBOSE_VERTS
= 0x0800,
2919 VERBOSE_DISASSEM
= 0x1000
2925 DEBUG_ALWAYS_FLUSH
= 0x1
2930 #define Elements(x) sizeof(x)/sizeof(*(x))
2933 #endif /* TYPES_H */