1 /* $Id: mtypes.h,v 1.98 2003/01/14 04:55:45 brianp Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Main Mesa data structures.
37 #include "config.h" /* Hardwired parameters */
38 #include "glapitable.h"
41 #include "math/m_matrix.h" /* GLmatrix */
43 #if defined(MESA_TRACE)
44 #include "Trace/tr_context.h"
48 /* Please try to mark derived values with a leading underscore ('_').
52 * Color channel data type:
55 typedef GLubyte GLchan
;
57 #define CHAN_MAXF 255.0F
58 #define CHAN_TYPE GL_UNSIGNED_BYTE
60 typedef GLushort GLchan
;
61 #define CHAN_MAX 65535
62 #define CHAN_MAXF 65535.0F
63 #define CHAN_TYPE GL_UNSIGNED_SHORT
65 typedef GLfloat GLchan
;
67 #define CHAN_MAXF 1.0F
68 #define CHAN_TYPE GL_FLOAT
70 #error "illegal number of color channel bits"
75 * Accumulation buffer data type:
78 typedef GLbyte GLaccum
;
80 typedef GLshort GLaccum
;
82 typedef GLfloat GLaccum
;
84 # error "illegal number of accumulation bits"
89 * Stencil buffer data type:
92 typedef GLubyte GLstencil
;
93 # define STENCIL_MAX 0xff
94 #elif STENCIL_BITS==16
95 typedef GLushort GLstencil
;
96 # define STENCIL_MAX 0xffff
98 # error "illegal number of stencil bits"
103 * Depth buffer data type:
105 typedef GLuint GLdepth
; /* Must be 32-bits! */
109 * Fixed point data type:
116 * Some forward type declarations
118 struct _mesa_HashTable
;
119 struct gl_texture_image
;
120 struct gl_texture_object
;
121 typedef struct __GLcontextRec GLcontext
;
122 typedef struct __GLcontextModesRec GLvisual
;
123 typedef struct gl_frame_buffer GLframebuffer
;
127 /* These define the aliases between numbered vertex attributes and
128 * conventional OpenGL vertex attributes. We use these values in
129 * quite a few places. New in Mesa 4.1.
131 #define VERT_ATTRIB_POS 0
132 #define VERT_ATTRIB_WEIGHT 1
133 #define VERT_ATTRIB_NORMAL 2
134 #define VERT_ATTRIB_COLOR0 3
135 #define VERT_ATTRIB_COLOR1 4
136 #define VERT_ATTRIB_FOG 5
137 #define VERT_ATTRIB_SIX 6
138 #define VERT_ATTRIB_SEVEN 7
139 #define VERT_ATTRIB_TEX0 8
140 #define VERT_ATTRIB_TEX1 9
141 #define VERT_ATTRIB_TEX2 10
142 #define VERT_ATTRIB_TEX3 11
143 #define VERT_ATTRIB_TEX4 12
144 #define VERT_ATTRIB_TEX5 13
145 #define VERT_ATTRIB_TEX6 14
146 #define VERT_ATTRIB_TEX7 15
147 #define VERT_ATTRIB_MAX 16
149 /* These are used in bitfields in many places */
150 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
151 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
152 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
153 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
154 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
155 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
156 #define VERT_BIT_SIX (1 << VERT_ATTRIB_SIX)
157 #define VERT_BIT_SEVEN (1 << VERT_ATTRIB_SEVEN)
158 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
159 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
160 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
161 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
162 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
163 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
164 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
165 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
167 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
172 * Maximum number of temporary vertices required for clipping. (Used
173 * in array_cache and tnl modules).
175 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
178 /* Data structure for color tables */
179 struct gl_color_table
{
180 GLenum Format
; /* GL_ALPHA, GL_RGB, GL_RGB, etc */
182 GLuint Size
; /* number of entries (rows) in table */
183 GLvoid
*Table
; /* either GLfloat * or GLchan * */
184 GLboolean FloatTable
; /* are entries stored as floats? */
189 GLubyte LuminanceSize
;
190 GLubyte IntensitySize
;
195 * Bit flags used for updating material values.
197 #define FRONT_AMBIENT_BIT 0x1
198 #define BACK_AMBIENT_BIT 0x2
199 #define FRONT_DIFFUSE_BIT 0x4
200 #define BACK_DIFFUSE_BIT 0x8
201 #define FRONT_SPECULAR_BIT 0x10
202 #define BACK_SPECULAR_BIT 0x20
203 #define FRONT_EMISSION_BIT 0x40
204 #define BACK_EMISSION_BIT 0x80
205 #define FRONT_SHININESS_BIT 0x100
206 #define BACK_SHININESS_BIT 0x200
207 #define FRONT_INDEXES_BIT 0x400
208 #define BACK_INDEXES_BIT 0x800
210 #define FRONT_MATERIAL_BITS (FRONT_EMISSION_BIT | FRONT_AMBIENT_BIT | \
211 FRONT_DIFFUSE_BIT | FRONT_SPECULAR_BIT | \
212 FRONT_SHININESS_BIT | FRONT_INDEXES_BIT)
214 #define BACK_MATERIAL_BITS (BACK_EMISSION_BIT | BACK_AMBIENT_BIT | \
215 BACK_DIFFUSE_BIT | BACK_SPECULAR_BIT | \
216 BACK_SHININESS_BIT | BACK_INDEXES_BIT)
218 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
223 * Specular exponent and material shininess lookup table sizes:
225 #define EXP_TABLE_SIZE 512
226 #define SHINE_TABLE_SIZE 256
228 struct gl_shine_tab
{
229 struct gl_shine_tab
*next
, *prev
;
230 GLfloat tab
[SHINE_TABLE_SIZE
+1];
237 struct gl_light
*next
; /* double linked list with sentinel */
238 struct gl_light
*prev
;
240 GLfloat Ambient
[4]; /* ambient color */
241 GLfloat Diffuse
[4]; /* diffuse color */
242 GLfloat Specular
[4]; /* specular color */
243 GLfloat EyePosition
[4]; /* position in eye coordinates */
244 GLfloat EyeDirection
[4]; /* spotlight dir in eye coordinates */
245 GLfloat SpotExponent
;
246 GLfloat SpotCutoff
; /* in degress */
247 GLfloat _CosCutoff
; /* = MAX(0, cos(SpotCutoff)) */
248 GLfloat ConstantAttenuation
;
249 GLfloat LinearAttenuation
;
250 GLfloat QuadraticAttenuation
;
251 GLboolean Enabled
; /* On/off flag */
254 GLuint _Flags
; /* State */
256 GLfloat _Position
[4]; /* position in eye/obj coordinates */
257 GLfloat _VP_inf_norm
[3]; /* Norm direction to infinite light */
258 GLfloat _h_inf_norm
[3]; /* Norm( _VP_inf_norm + <0,0,1> ) */
259 GLfloat _NormDirection
[4]; /* normalized spotlight direction */
260 GLfloat _VP_inf_spot_attenuation
;
262 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /* to replace a pow() call */
263 GLfloat _MatAmbient
[2][3]; /* material ambient * light ambient */
264 GLfloat _MatDiffuse
[2][3]; /* material diffuse * light diffuse */
265 GLfloat _MatSpecular
[2][3]; /* material spec * light specular */
266 GLfloat _dli
; /* CI diffuse light intensity */
267 GLfloat _sli
; /* CI specular light intensity */
271 struct gl_lightmodel
{
272 GLfloat Ambient
[4]; /* ambient color */
273 GLboolean LocalViewer
; /* Local (or infinite) view point? */
274 GLboolean TwoSide
; /* Two (or one) sided lighting? */
275 GLenum ColorControl
; /* either GL_SINGLE_COLOR */
276 /* or GL_SEPARATE_SPECULAR_COLOR */
287 GLfloat AmbientIndex
; /* for color index lighting */
288 GLfloat DiffuseIndex
; /* for color index lighting */
289 GLfloat SpecularIndex
; /* for color index lighting */
294 * Attribute structures:
295 * We define a struct for each attribute group to make pushing and
296 * popping attributes easy. Also it's a good organization.
298 struct gl_accum_attrib
{
299 GLfloat ClearColor
[4]; /* Accumulation buffer clear color */
304 * Used in _DrawDestMask and _ReadSrcMask below to identify color buffers.
306 #define FRONT_LEFT_BIT 0x1
307 #define FRONT_RIGHT_BIT 0x2
308 #define BACK_LEFT_BIT 0x4
309 #define BACK_RIGHT_BIT 0x8
310 #define AUX0_BIT 0x10
311 #define AUX1_BIT 0x20
312 #define AUX2_BIT 0x40
313 #define AUX3_BIT 0x80
315 struct gl_colorbuffer_attrib
{
316 GLuint ClearIndex
; /* Index to use for glClear */
317 GLclampf ClearColor
[4]; /* Color to use for glClear */
319 GLuint IndexMask
; /* Color index write mask */
320 GLubyte ColorMask
[4]; /* Each flag is 0xff or 0x0 */
322 GLenum DrawBuffer
; /* Which buffer to draw into */
323 GLubyte _DrawDestMask
; /* bitwise-OR of FRONT/BACK_LEFT/RIGHT_BITs */
326 GLboolean AlphaEnabled
; /* Alpha test enabled flag */
327 GLenum AlphaFunc
; /* Alpha test function */
331 GLboolean BlendEnabled
; /* Blending enabled flag */
332 GLenum BlendSrcRGB
; /* Blending source operator */
333 GLenum BlendDstRGB
; /* Blending destination operator */
334 GLenum BlendSrcA
; /* GL_INGR_blend_func_separate */
335 GLenum BlendDstA
; /* GL_INGR_blend_func_separate */
336 GLenum BlendEquation
;
337 GLfloat BlendColor
[4];
340 GLenum LogicOp
; /* Logic operator */
341 GLboolean IndexLogicOpEnabled
; /* Color index logic op enabled flag */
342 GLboolean ColorLogicOpEnabled
; /* RGBA logic op enabled flag */
344 GLboolean DitherFlag
; /* Dither enable flag */
348 struct gl_current_attrib
{
349 /* These values valid only when FLUSH_VERTICES has been called.
351 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /* Current vertex attributes */
352 /* indexed by VERT_ATTRIB_* */
353 GLuint Index
; /* Current color index */
354 GLboolean EdgeFlag
; /* Current edge flag */
356 /* These values are always valid. BTW, note how similar this set of
357 * attributes is to the SWvertex datatype in the software rasterizer...
359 GLfloat RasterPos
[4]; /* Current raster position */
360 GLfloat RasterDistance
; /* Current raster distance */
361 GLfloat RasterColor
[4]; /* Current raster color */
362 GLfloat RasterSecondaryColor
[4]; /* Current rast 2ndary color */
363 GLuint RasterIndex
; /* Current raster index */
364 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
365 GLboolean RasterPosValid
; /* Raster pos valid flag */
369 struct gl_depthbuffer_attrib
{
370 GLenum Func
; /* Function for depth buffer compare */
371 GLfloat Clear
; /* Value to clear depth buffer to */
372 GLboolean Test
; /* Depth buffering enabled flag */
373 GLboolean Mask
; /* Depth buffer writable? */
374 GLboolean OcclusionTest
; /* GL_HP_occlusion_test */
378 struct gl_enable_attrib
{
380 GLboolean AutoNormal
;
383 GLboolean ColorMaterial
;
384 GLboolean Convolution1D
;
385 GLboolean Convolution2D
;
386 GLboolean Separable2D
;
392 GLboolean Light
[MAX_LIGHTS
];
394 GLboolean LineSmooth
;
395 GLboolean LineStipple
;
396 GLboolean IndexLogicOp
;
397 GLboolean ColorLogicOp
;
398 GLboolean Map1Color4
;
400 GLboolean Map1Normal
;
401 GLboolean Map1TextureCoord1
;
402 GLboolean Map1TextureCoord2
;
403 GLboolean Map1TextureCoord3
;
404 GLboolean Map1TextureCoord4
;
405 GLboolean Map1Vertex3
;
406 GLboolean Map1Vertex4
;
407 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
408 GLboolean Map2Color4
;
410 GLboolean Map2Normal
;
411 GLboolean Map2TextureCoord1
;
412 GLboolean Map2TextureCoord2
;
413 GLboolean Map2TextureCoord3
;
414 GLboolean Map2TextureCoord4
;
415 GLboolean Map2Vertex3
;
416 GLboolean Map2Vertex4
;
417 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
420 GLboolean PixelTexture
;
421 GLboolean PointSmooth
;
422 GLboolean PolygonOffsetPoint
;
423 GLboolean PolygonOffsetLine
;
424 GLboolean PolygonOffsetFill
;
425 GLboolean PolygonSmooth
;
426 GLboolean PolygonStipple
;
427 GLboolean RescaleNormals
;
430 GLboolean MultisampleEnabled
; /* GL_ARB_multisample */
431 GLboolean SampleAlphaToCoverage
; /* GL_ARB_multisample */
432 GLboolean SampleAlphaToOne
; /* GL_ARB_multisample */
433 GLboolean SampleCoverage
; /* GL_ARB_multisample */
434 GLboolean SampleCoverageInvert
; /* GL_ARB_multisample */
435 GLboolean RasterPositionUnclipped
; /* GL_IBM_rasterpos_clip */
436 GLuint Texture
[MAX_TEXTURE_IMAGE_UNITS
];
437 GLuint TexGen
[MAX_TEXTURE_COORD_UNITS
];
438 GLboolean VertexProgram
; /* GL_NV_vertex_program */
439 GLboolean VertexProgramPointSize
; /* GL_NV_vertex_program */
440 GLboolean VertexProgramTwoSide
; /* GL_NV_vertex_program */
441 GLboolean PointSprite
; /* GL_NV_point_sprite */
445 struct gl_eval_attrib
{
447 GLboolean Map1Color4
;
449 GLboolean Map1Normal
;
450 GLboolean Map1TextureCoord1
;
451 GLboolean Map1TextureCoord2
;
452 GLboolean Map1TextureCoord3
;
453 GLboolean Map1TextureCoord4
;
454 GLboolean Map1Vertex3
;
455 GLboolean Map1Vertex4
;
456 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
457 GLboolean Map2Color4
;
459 GLboolean Map2Normal
;
460 GLboolean Map2TextureCoord1
;
461 GLboolean Map2TextureCoord2
;
462 GLboolean Map2TextureCoord3
;
463 GLboolean Map2TextureCoord4
;
464 GLboolean Map2Vertex3
;
465 GLboolean Map2Vertex4
;
466 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
467 GLboolean AutoNormal
;
468 /* Map Grid endpoints and divisions and calculated du values */
470 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
471 GLint MapGrid2un
, MapGrid2vn
;
472 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
473 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
477 struct gl_fog_attrib
{
478 GLboolean Enabled
; /* Fog enabled flag */
479 GLfloat Color
[4]; /* Fog color */
480 GLfloat Density
; /* Density >= 0.0 */
481 GLfloat Start
; /* Start distance in eye coords */
482 GLfloat End
; /* End distance in eye coords */
483 GLfloat Index
; /* Fog index */
484 GLenum Mode
; /* Fog mode */
485 GLboolean ColorSumEnabled
;
486 GLenum FogCoordinateSource
; /* GL_EXT_fog_coord */
490 struct gl_hint_attrib
{
491 /* always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE */
492 GLenum PerspectiveCorrection
;
495 GLenum PolygonSmooth
;
497 GLenum ClipVolumeClipping
; /* GL_EXT_clip_volume_hint */
498 GLenum TextureCompression
; /* GL_ARB_texture_compression */
499 GLenum GenerateMipmap
; /* GL_SGIS_generate_mipmap */
503 struct gl_histogram_attrib
{
504 GLuint Width
; /* number of table entries */
505 GLint Format
; /* GL_ALPHA, GL_RGB, etc */
506 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /* the histogram */
507 GLboolean Sink
; /* terminate image transfer? */
508 GLubyte RedSize
; /* Bits per counter */
512 GLubyte LuminanceSize
;
516 struct gl_minmax_attrib
{
519 GLfloat Min
[4], Max
[4]; /* RGBA */
523 struct gl_convolution_attrib
{
525 GLenum InternalFormat
;
528 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
532 #define LIGHT_SPOT 0x1
533 #define LIGHT_LOCAL_VIEWER 0x2
534 #define LIGHT_POSITIONAL 0x4
535 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
537 struct gl_light_attrib
{
538 struct gl_light Light
[MAX_LIGHTS
]; /* Array of lights */
539 struct gl_lightmodel Model
; /* Lighting model */
541 /* Must flush FLUSH_VERTICES before referencing:
543 struct gl_material Material
[2]; /* Material 0=front, 1=back */
545 GLboolean Enabled
; /* Lighting enabled flag */
546 GLenum ShadeModel
; /* GL_FLAT or GL_SMOOTH */
547 GLenum ColorMaterialFace
; /* GL_FRONT, BACK or FRONT_AND_BACK */
548 GLenum ColorMaterialMode
; /* GL_AMBIENT, GL_DIFFUSE, etc */
549 GLuint ColorMaterialBitmask
; /* bitmask formed from Face and Mode */
550 GLboolean ColorMaterialEnabled
;
552 struct gl_light EnabledList
; /* List sentinel */
554 /* Derived for optimizations: */
555 GLboolean _NeedVertices
; /* Use fast shader? */
556 GLuint _Flags
; /* LIGHT_* flags, see above */
557 GLfloat _BaseColor
[2][3];
561 struct gl_line_attrib
{
562 GLboolean SmoothFlag
; /* GL_LINE_SMOOTH enabled? */
563 GLboolean StippleFlag
; /* GL_LINE_STIPPLE enabled? */
564 GLushort StipplePattern
; /* Stipple pattern */
565 GLint StippleFactor
; /* Stipple repeat factor */
566 GLfloat Width
; /* Line width */
567 GLfloat _Width
; /* Clamped Line width */
571 struct gl_list_attrib
{
576 struct gl_list_opcode
{
578 void (*execute
)( GLcontext
*ctx
, void *data
);
579 void (*destroy
)( GLcontext
*ctx
, void *data
);
580 void (*print
)( GLcontext
*ctx
, void *data
);
583 #define GL_MAX_EXT_OPCODES 16
585 struct gl_list_extensions
{
586 struct gl_list_opcode opcode
[GL_MAX_EXT_OPCODES
];
591 struct gl_multisample_attrib
{
593 GLboolean SampleAlphaToCoverage
;
594 GLboolean SampleAlphaToOne
;
595 GLboolean SampleCoverage
;
596 GLfloat SampleCoverageValue
;
597 GLboolean SampleCoverageInvert
;
601 struct gl_pixel_attrib
{
602 GLenum ReadBuffer
; /* src buffer for glRead/CopyPixels */
603 GLubyte _ReadSrcMask
; /* Not really a mask, but like _DrawDestMask */
604 /* May be: FRONT_LEFT_BIT, BACK_LEFT_BIT, */
605 /* FRONT_RIGHT_BIT or BACK_RIGHT_BIT. */
606 GLfloat RedBias
, RedScale
;
607 GLfloat GreenBias
, GreenScale
;
608 GLfloat BlueBias
, BlueScale
;
609 GLfloat AlphaBias
, AlphaScale
;
610 GLfloat DepthBias
, DepthScale
;
611 GLint IndexShift
, IndexOffset
;
612 GLboolean MapColorFlag
;
613 GLboolean MapStencilFlag
;
614 GLfloat ZoomX
, ZoomY
;
615 /* XXX move these out of gl_pixel_attrib */
616 GLint MapStoSsize
; /* Size of each pixel map */
626 GLint MapStoS
[MAX_PIXEL_MAP_TABLE
]; /* Pixel map tables */
627 GLint MapItoI
[MAX_PIXEL_MAP_TABLE
];
628 GLfloat MapItoR
[MAX_PIXEL_MAP_TABLE
];
629 GLfloat MapItoG
[MAX_PIXEL_MAP_TABLE
];
630 GLfloat MapItoB
[MAX_PIXEL_MAP_TABLE
];
631 GLfloat MapItoA
[MAX_PIXEL_MAP_TABLE
];
632 GLubyte MapItoR8
[MAX_PIXEL_MAP_TABLE
]; /* converted to 8-bit color */
633 GLubyte MapItoG8
[MAX_PIXEL_MAP_TABLE
];
634 GLubyte MapItoB8
[MAX_PIXEL_MAP_TABLE
];
635 GLubyte MapItoA8
[MAX_PIXEL_MAP_TABLE
];
636 GLfloat MapRtoR
[MAX_PIXEL_MAP_TABLE
];
637 GLfloat MapGtoG
[MAX_PIXEL_MAP_TABLE
];
638 GLfloat MapBtoB
[MAX_PIXEL_MAP_TABLE
];
639 GLfloat MapAtoA
[MAX_PIXEL_MAP_TABLE
];
640 /* GL_EXT_histogram */
641 GLboolean HistogramEnabled
;
642 GLboolean MinMaxEnabled
;
643 /* GL_SGIS_pixel_texture */
644 GLboolean PixelTextureEnabled
;
645 GLenum FragmentRgbSource
;
646 GLenum FragmentAlphaSource
;
647 /* GL_SGI_color_matrix */
648 GLfloat PostColorMatrixScale
[4]; /* RGBA */
649 GLfloat PostColorMatrixBias
[4]; /* RGBA */
650 /* GL_SGI_color_table */
651 GLfloat ColorTableScale
[4];
652 GLfloat ColorTableBias
[4];
653 GLboolean ColorTableEnabled
;
654 GLfloat PCCTscale
[4];
656 GLboolean PostConvolutionColorTableEnabled
;
657 GLfloat PCMCTscale
[4];
658 GLfloat PCMCTbias
[4];
659 GLboolean PostColorMatrixColorTableEnabled
;
661 GLboolean Convolution1DEnabled
;
662 GLboolean Convolution2DEnabled
;
663 GLboolean Separable2DEnabled
;
664 GLfloat ConvolutionBorderColor
[3][4];
665 GLenum ConvolutionBorderMode
[3];
666 GLfloat ConvolutionFilterScale
[3][4];
667 GLfloat ConvolutionFilterBias
[3][4];
668 GLfloat PostConvolutionScale
[4]; /* RGBA */
669 GLfloat PostConvolutionBias
[4]; /* RGBA */
673 struct gl_point_attrib
{
674 GLboolean SmoothFlag
; /* True if GL_POINT_SMOOTH is enabled */
675 GLfloat Size
; /* User-specified point size */
676 GLfloat _Size
; /* Size clamped to Const.Min/MaxPointSize */
677 GLfloat Params
[3]; /* GL_EXT_point_parameters */
678 GLfloat MinSize
, MaxSize
; /* GL_EXT_point_parameters */
679 GLfloat Threshold
; /* GL_EXT_point_parameters */
680 GLboolean _Attenuated
; /* True if Params != [1, 0, 0] */
681 GLboolean PointSprite
; /* GL_NV_point_sprite */
682 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /* GL_NV_point_sprite */
683 GLenum SpriteRMode
; /* GL_NV_point_sprite */
687 struct gl_polygon_attrib
{
688 GLenum FrontFace
; /* Either GL_CW or GL_CCW */
689 GLenum FrontMode
; /* Either GL_POINT, GL_LINE or GL_FILL */
690 GLenum BackMode
; /* Either GL_POINT, GL_LINE or GL_FILL */
691 GLboolean _FrontBit
; /* 0=GL_CCW, 1=GL_CW */
692 GLboolean CullFlag
; /* Culling on/off flag */
693 GLboolean SmoothFlag
; /* True if GL_POLYGON_SMOOTH is enabled */
694 GLboolean StippleFlag
; /* True if GL_POLYGON_STIPPLE is enabled */
695 GLenum CullFaceMode
; /* Culling mode GL_FRONT or GL_BACK */
696 GLfloat OffsetFactor
; /* Polygon offset factor, from user */
697 GLfloat OffsetUnits
; /* Polygon offset units, from user */
698 GLboolean OffsetPoint
; /* Offset in GL_POINT mode */
699 GLboolean OffsetLine
; /* Offset in GL_LINE mode */
700 GLboolean OffsetFill
; /* Offset in GL_FILL mode */
704 struct gl_scissor_attrib
{
705 GLboolean Enabled
; /* Scissor test enabled? */
706 GLint X
, Y
; /* Lower left corner of box */
707 GLsizei Width
, Height
; /* Size of box */
711 struct gl_stencil_attrib
{
712 GLboolean Enabled
; /* Enabled flag */
713 GLboolean TestTwoSide
; /* GL_EXT_stencil_two_side */
714 GLubyte ActiveFace
; /* GL_EXT_stencil_two_side (0 or 1) */
715 GLenum Function
[2]; /* Stencil function */
716 GLenum FailFunc
[2]; /* Fail function */
717 GLenum ZPassFunc
[2]; /* Depth buffer pass function */
718 GLenum ZFailFunc
[2]; /* Depth buffer fail function */
719 GLstencil Ref
[2]; /* Reference value */
720 GLstencil ValueMask
[2]; /* Value mask */
721 GLstencil WriteMask
[2]; /* Write mask */
722 GLstencil Clear
; /* Clear value */
726 /* TexGenEnabled flags */
732 /* Texture.Unit[]._ReallyEnabled flags: */
733 #define TEXTURE_1D_BIT 0x01
734 #define TEXTURE_2D_BIT 0x02
735 #define TEXTURE_3D_BIT 0x04
736 #define TEXTURE_CUBE_BIT 0x08
737 #define TEXTURE_RECT_BIT 0x10
739 #define NUM_TEXTURE_TARGETS 5 /* 1D, 2D, 3D, CUBE and RECT */
742 /* Bitmap versions of the GL_ constants. */
743 #define TEXGEN_SPHERE_MAP 0x1
744 #define TEXGEN_OBJ_LINEAR 0x2
745 #define TEXGEN_EYE_LINEAR 0x4
746 #define TEXGEN_REFLECTION_MAP_NV 0x8
747 #define TEXGEN_NORMAL_MAP_NV 0x10
749 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
750 TEXGEN_REFLECTION_MAP_NV | \
751 TEXGEN_NORMAL_MAP_NV)
752 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
753 TEXGEN_REFLECTION_MAP_NV | \
754 TEXGEN_NORMAL_MAP_NV | \
759 /* A selection of state flags to make driver and module's lives easier. */
760 #define ENABLE_TEXGEN0 0x1
761 #define ENABLE_TEXGEN1 0x2
762 #define ENABLE_TEXGEN2 0x4
763 #define ENABLE_TEXGEN3 0x8
764 #define ENABLE_TEXGEN4 0x10
765 #define ENABLE_TEXGEN5 0x20
766 #define ENABLE_TEXGEN6 0x40
767 #define ENABLE_TEXGEN7 0x80
769 #define ENABLE_TEXMAT0 0x1 /* Ie. not the identity matrix */
770 #define ENABLE_TEXMAT1 0x2
771 #define ENABLE_TEXMAT2 0x4
772 #define ENABLE_TEXMAT3 0x8
773 #define ENABLE_TEXMAT4 0x10
774 #define ENABLE_TEXMAT5 0x20
775 #define ENABLE_TEXMAT6 0x40
776 #define ENABLE_TEXMAT7 0x80
778 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
779 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
782 * If teximage is color-index, texelOut returns GLchan[1].
783 * If teximage is depth, texelOut returns GLfloat[1].
784 * Otherwise, texelOut returns GLchan[4].
786 typedef void (*FetchTexelFunc
)( const struct gl_texture_image
*texImage
,
787 GLint col
, GLint row
, GLint img
,
790 /* Texture format record */
791 struct gl_texture_format
{
792 GLint MesaFormat
; /* One of the MESA_FORMAT_* values */
794 GLenum BaseFormat
; /* Either GL_ALPHA, GL_INTENSITY, GL_LUMINANCE,
795 * GL_LUMINANCE_ALPHA, GL_RGB, GL_RGBA,
796 * GL_COLOR_INDEX or GL_DEPTH_COMPONENT.
798 GLubyte RedBits
; /* Bits per texel component */
799 GLubyte GreenBits
; /* These are just rough approximations for */
800 GLubyte BlueBits
; /* compressed texture formats. */
802 GLubyte LuminanceBits
;
803 GLubyte IntensityBits
;
807 GLint TexelBytes
; /* Bytes per texel (0 for compressed formats */
809 FetchTexelFunc FetchTexel1D
; /* Texel fetch function pointers */
810 FetchTexelFunc FetchTexel2D
;
811 FetchTexelFunc FetchTexel3D
;
815 /* Texture image record */
816 struct gl_texture_image
{
817 GLenum Format
; /* GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA,
818 * GL_INTENSITY, GL_RGB, GL_RGBA,
819 * GL_COLOR_INDEX or GL_DEPTH_COMPONENT only.
820 * Used for choosing TexEnv arithmetic.
822 GLint IntFormat
; /* Internal format as given by the user */
823 GLuint Border
; /* 0 or 1 */
824 GLuint Width
; /* = 2^WidthLog2 + 2*Border */
825 GLuint Height
; /* = 2^HeightLog2 + 2*Border */
826 GLuint Depth
; /* = 2^DepthLog2 + 2*Border */
827 GLuint RowStride
; /* == Width unless IsClientData and padded */
828 GLuint Width2
; /* = Width - 2*Border */
829 GLuint Height2
; /* = Height - 2*Border */
830 GLuint Depth2
; /* = Depth - 2*Border */
831 GLuint WidthLog2
; /* = log2(Width2) */
832 GLuint HeightLog2
; /* = log2(Height2) */
833 GLuint DepthLog2
; /* = log2(Depth2) */
834 GLuint MaxLog2
; /* = MAX(WidthLog2, HeightLog2) */
835 GLfloat WidthScale
; /* used for mipmap lod computation */
836 GLfloat HeightScale
; /* used for mipmap lod computation */
837 GLfloat DepthScale
; /* used for mipmap lod computation */
838 GLvoid
*Data
; /* Image data, accessed via FetchTexel() */
839 GLboolean IsClientData
; /* Data owned by client? */
842 const struct gl_texture_format
*TexFormat
;
844 FetchTexelFunc FetchTexel
; /* Texel fetch function pointer */
846 GLboolean IsCompressed
; /* GL_ARB_texture_compression */
847 GLuint CompressedSize
; /* GL_ARB_texture_compression */
849 /* For device driver: */
850 void *DriverData
; /* Arbitrary device driver data */
854 /* Texture object record */
855 struct gl_texture_object
{
856 _glthread_Mutex Mutex
; /* for thread safety */
857 GLint RefCount
; /* reference count */
858 GLuint Name
; /* an unsigned integer */
859 GLenum Target
; /* GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
860 GLfloat Priority
; /* in [0,1] */
861 GLfloat BorderColor
[4]; /* unclamped */
862 GLchan _BorderChan
[4]; /* clamped, as GLchan */
863 GLenum WrapS
; /* Wrap modes are: GL_CLAMP, REPEAT */
864 GLenum WrapT
; /* GL_CLAMP_TO_EDGE, and */
865 GLenum WrapR
; /* GL_CLAMP_TO_BORDER_ARB */
866 GLenum MinFilter
; /* minification filter */
867 GLenum MagFilter
; /* magnification filter */
868 GLfloat MinLod
; /* min lambda, OpenGL 1.2 */
869 GLfloat MaxLod
; /* max lambda, OpenGL 1.2 */
870 GLint BaseLevel
; /* min mipmap level, OpenGL 1.2 */
871 GLint MaxLevel
; /* max mipmap level, OpenGL 1.2 */
872 GLfloat MaxAnisotropy
; /* GL_EXT_texture_filter_anisotropic */
873 GLboolean CompareFlag
; /* GL_SGIX_shadow */
874 GLenum CompareOperator
; /* GL_SGIX_shadow */
875 GLfloat ShadowAmbient
;
876 GLenum CompareMode
; /* GL_ARB_shadow */
877 GLenum CompareFunc
; /* GL_ARB_shadow */
878 GLenum DepthMode
; /* GL_ARB_depth_texture */
879 GLint _MaxLevel
; /* actual max mipmap level (q in the spec) */
880 GLfloat _MaxLambda
; /* = _MaxLevel - BaseLevel (q - b in spec) */
881 GLboolean GenerateMipmap
; /* GL_SGIS_generate_mipmap */
883 struct gl_texture_image
*Image
[MAX_TEXTURE_LEVELS
];
885 /* Texture cube faces */
886 /* Image[] is alias for *PosX[MAX_TEXTURE_LEVELS]; */
887 struct gl_texture_image
*NegX
[MAX_TEXTURE_LEVELS
];
888 struct gl_texture_image
*PosY
[MAX_TEXTURE_LEVELS
];
889 struct gl_texture_image
*NegY
[MAX_TEXTURE_LEVELS
];
890 struct gl_texture_image
*PosZ
[MAX_TEXTURE_LEVELS
];
891 struct gl_texture_image
*NegZ
[MAX_TEXTURE_LEVELS
];
893 /* GL_EXT_paletted_texture */
894 struct gl_color_table Palette
;
896 GLboolean Complete
; /* Is texture object complete? */
897 struct gl_texture_object
*Next
; /* Next in linked list */
899 /* For device driver: */
900 void *DriverData
; /* Arbitrary device driver data */
904 /* Texture unit record */
905 struct gl_texture_unit
{
906 GLuint Enabled
; /* bitmask of TEXTURE_*_BIT flags */
907 GLuint _ReallyEnabled
; /* 0 or exactly one of TEXTURE_*_BIT flags */
909 GLenum EnvMode
; /* GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
911 GLuint TexGenEnabled
; /* Bitwise-OR of [STRQ]_BIT values */
912 GLenum GenModeS
; /* Tex coord generation mode, either */
913 GLenum GenModeT
; /* GL_OBJECT_LINEAR, or */
914 GLenum GenModeR
; /* GL_EYE_LINEAR, or */
915 GLenum GenModeQ
; /* GL_SPHERE_MAP */
920 GLuint _GenFlags
; /* bitwise or of GenBit[STRQ] */
921 GLfloat ObjectPlaneS
[4];
922 GLfloat ObjectPlaneT
[4];
923 GLfloat ObjectPlaneR
[4];
924 GLfloat ObjectPlaneQ
[4];
925 GLfloat EyePlaneS
[4];
926 GLfloat EyePlaneT
[4];
927 GLfloat EyePlaneR
[4];
928 GLfloat EyePlaneQ
[4];
929 GLfloat LodBias
; /* for biasing mipmap levels */
931 /* GL_EXT_texture_env_combine */
932 GLenum CombineModeRGB
; /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
933 GLenum CombineModeA
; /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
934 GLenum CombineSourceRGB
[3]; /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
935 GLenum CombineSourceA
[3]; /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
936 GLenum CombineOperandRGB
[3]; /* SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
937 GLenum CombineOperandA
[3]; /* SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
938 GLuint CombineScaleShiftRGB
; /* 0, 1 or 2 */
939 GLuint CombineScaleShiftA
; /* 0, 1 or 2 */
941 struct gl_texture_object
*Current1D
;
942 struct gl_texture_object
*Current2D
;
943 struct gl_texture_object
*Current3D
;
944 struct gl_texture_object
*CurrentCubeMap
; /* GL_ARB_texture_cube_map */
945 struct gl_texture_object
*CurrentRect
; /* GL_NV_texture_rectangle */
947 struct gl_texture_object
*_Current
; /* Points to really enabled tex obj */
949 struct gl_texture_object Saved1D
; /* only used by glPush/PopAttrib */
950 struct gl_texture_object Saved2D
;
951 struct gl_texture_object Saved3D
;
952 struct gl_texture_object SavedCubeMap
;
953 struct gl_texture_object SavedRect
;
957 /* The texture attribute group */
958 struct gl_texture_attrib
{
960 GLuint CurrentUnit
; /* Active texture unit */
962 GLuint _EnabledUnits
; /* one bit set for each really-enabled unit */
963 GLuint _GenFlags
; /* for texgen */
964 GLuint _TexGenEnabled
;
965 GLuint _TexMatEnabled
;
967 struct gl_texture_unit Unit
[MAX_TEXTURE_UNITS
];
969 struct gl_texture_object
*Proxy1D
;
970 struct gl_texture_object
*Proxy2D
;
971 struct gl_texture_object
*Proxy3D
;
972 struct gl_texture_object
*ProxyCubeMap
;
973 struct gl_texture_object
*ProxyRect
;
975 /* GL_EXT_shared_texture_palette */
976 GLboolean SharedPalette
;
977 struct gl_color_table Palette
;
981 struct gl_transform_attrib
{
982 GLenum MatrixMode
; /* Matrix mode */
983 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4];
984 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /* derived */
985 GLuint ClipPlanesEnabled
; /* on/off bitmask */
986 GLboolean Normalize
; /* Normalize all normals? */
987 GLboolean RescaleNormals
; /* GL_EXT_rescale_normal */
988 GLboolean RasterPositionUnclipped
; /* GL_IBM_rasterpos_clip */
992 struct gl_viewport_attrib
{
993 GLint X
, Y
; /* position */
994 GLsizei Width
, Height
; /* size */
995 GLfloat Near
, Far
; /* Depth buffer range */
996 GLmatrix _WindowMap
; /* Mapping transformation as a matrix. */
1000 /* For the attribute stack: */
1001 struct gl_attrib_node
{
1004 struct gl_attrib_node
*next
;
1009 * Client pixel packing/unpacking attributes
1011 struct gl_pixelstore_attrib
{
1016 GLint ImageHeight
; /* for GL_EXT_texture3D */
1017 GLint SkipImages
; /* for GL_EXT_texture3D */
1018 GLboolean SwapBytes
;
1020 GLboolean ClientStorage
; /* GL_APPLE_client_storage */
1021 GLboolean Invert
; /* GL_MESA_pack_invert */
1025 #define CA_CLIENT_DATA 0x1 /* Data not alloced by mesa */
1029 * Client vertex array attributes
1031 struct gl_client_array
{
1034 GLsizei Stride
; /* user-specified stride */
1035 GLsizei StrideB
; /* actual stride in bytes */
1038 GLuint Enabled
; /* one of the _NEW_ARRAY_ bits */
1042 struct gl_array_attrib
{
1043 struct gl_client_array Vertex
; /* client data descriptors */
1044 struct gl_client_array Normal
;
1045 struct gl_client_array Color
;
1046 struct gl_client_array SecondaryColor
;
1047 struct gl_client_array FogCoord
;
1048 struct gl_client_array Index
;
1049 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1050 struct gl_client_array EdgeFlag
;
1052 struct gl_client_array VertexAttrib
[16]; /* GL_NV_vertex_program */
1054 GLint TexCoordInterleaveFactor
;
1055 GLint ActiveTexture
; /* Client Active Texture */
1059 GLuint _Enabled
; /* _NEW_ARRAY_* - bit set if array enabled */
1060 GLuint NewState
; /* _NEW_ARRAY_* */
1064 struct gl_feedback
{
1066 GLuint _Mask
; /* FB_* bits */
1073 struct gl_selection
{
1075 GLuint BufferSize
; /* size of SelectBuffer */
1076 GLuint BufferCount
; /* number of values in SelectBuffer */
1077 GLuint Hits
; /* number of records in SelectBuffer */
1078 GLuint NameStackDepth
;
1079 GLuint NameStack
[MAX_NAME_STACK_DEPTH
];
1081 GLfloat HitMinZ
, HitMaxZ
;
1086 * 1-D Evaluator control points
1089 GLuint Order
; /* Number of control points */
1090 GLfloat u1
, u2
, du
; /* u1, u2, 1.0/(u2-u1) */
1091 GLfloat
*Points
; /* Points to contiguous control points */
1096 * 2-D Evaluator control points
1099 GLuint Uorder
; /* Number of control points in U dimension */
1100 GLuint Vorder
; /* Number of control points in V dimension */
1103 GLfloat
*Points
; /* Points to contiguous control points */
1108 * All evalutator control points
1110 struct gl_evaluators
{
1112 struct gl_1d_map Map1Vertex3
;
1113 struct gl_1d_map Map1Vertex4
;
1114 struct gl_1d_map Map1Index
;
1115 struct gl_1d_map Map1Color4
;
1116 struct gl_1d_map Map1Normal
;
1117 struct gl_1d_map Map1Texture1
;
1118 struct gl_1d_map Map1Texture2
;
1119 struct gl_1d_map Map1Texture3
;
1120 struct gl_1d_map Map1Texture4
;
1121 struct gl_1d_map Map1Attrib
[16]; /* GL_NV_vertex_program */
1124 struct gl_2d_map Map2Vertex3
;
1125 struct gl_2d_map Map2Vertex4
;
1126 struct gl_2d_map Map2Index
;
1127 struct gl_2d_map Map2Color4
;
1128 struct gl_2d_map Map2Normal
;
1129 struct gl_2d_map Map2Texture1
;
1130 struct gl_2d_map Map2Texture2
;
1131 struct gl_2d_map Map2Texture3
;
1132 struct gl_2d_map Map2Texture4
;
1133 struct gl_2d_map Map2Attrib
[16]; /* GL_NV_vertex_program */
1138 /* NV_vertex_program runtime state */
1141 GLfloat Registers
[MAX_NV_VERTEX_PROGRAM_TEMPS
1142 + MAX_NV_VERTEX_PROGRAM_PARAMS
1143 + MAX_NV_VERTEX_PROGRAM_INPUTS
1144 + MAX_NV_VERTEX_PROGRAM_OUTPUTS
][4];
1145 GLint AddressReg
; /* might someday be a 4-vector */
1149 /* NV_fragment_program runtime state */
1152 GLfloat Registers
[MAX_NV_FRAGMENT_PROGRAM_TEMPS
1153 + MAX_NV_FRAGMENT_PROGRAM_PARAMS
1154 + MAX_NV_FRAGMENT_PROGRAM_INPUTS
1155 + MAX_NV_FRAGMENT_PROGRAM_OUTPUTS
1156 + MAX_NV_FRAGMENT_PROGRAM_WRITE_ONLYS
][4];
1157 GLuint CondCodes
[4];
1161 /* Vertex and fragment instructions */
1162 struct vp_instruction
;
1163 struct fp_instruction
;
1166 /* Base class for any kind of program object */
1170 GLubyte
*String
; /* Null-terminated program text */
1177 /* Vertex program object */
1178 struct vertex_program
1180 struct program Base
; /* base class */
1181 struct vp_instruction
*Instructions
; /* Compiled instructions */
1182 GLboolean IsPositionInvariant
; /* GL_NV_vertex_program1_1 */
1183 GLuint InputsRead
; /* Bitmask of which input regs are read */
1184 GLuint OutputsWritten
; /* Bitmask of which output regs are written to */
1188 /* Fragment program object */
1189 struct fragment_program
1191 struct program Base
; /* base class */
1192 struct fp_instruction
*Instructions
; /* Compiled instructions */
1193 GLuint InputsRead
; /* Bitmask of which input regs are read */
1194 GLuint OutputsWritten
; /* Bitmask of which output regs are written to */
1195 GLfloat LocalParams
[MAX_NV_FRAGMENT_PROGRAM_PARAMS
][4];
1200 * State common to vertex and fragment programs.
1202 struct program_state
{
1203 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_NV */
1204 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_NV */
1209 * State for GL_NV_vertex_program
1211 struct vertex_program_state
1213 GLboolean Enabled
; /* GL_VERTEX_PROGRAM_NV */
1214 GLboolean PointSizeEnabled
; /* GL_VERTEX_PROGRAM_POINT_SIZE_NV */
1215 GLboolean TwoSideEnabled
; /* GL_VERTEX_PROGRAM_TWO_SIDE_NV */
1216 struct vertex_program
*Current
; /* ptr to currently bound program */
1217 struct vp_machine Machine
; /* machine state */
1219 GLenum TrackMatrix
[MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4];
1220 GLenum TrackMatrixTransform
[MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4];
1225 * State for GL_NV_fragment_program
1227 struct fragment_program_state
1229 GLboolean Enabled
; /* GL_VERTEX_PROGRAM_NV */
1230 struct fragment_program
*Current
; /* ptr to currently bound program */
1231 struct fp_machine Machine
; /* machine state */
1236 * State which can be shared by multiple contexts:
1238 struct gl_shared_state
{
1239 _glthread_Mutex Mutex
; /* for thread safety */
1240 GLint RefCount
; /* Reference count */
1241 struct _mesa_HashTable
*DisplayList
; /* Display lists hash table */
1242 struct _mesa_HashTable
*TexObjects
; /* Texture objects hash table */
1243 struct gl_texture_object
*TexObjectList
;/* Linked list of texture objects */
1245 /* Default texture objects (shared by all multi-texture units) */
1246 struct gl_texture_object
*Default1D
;
1247 struct gl_texture_object
*Default2D
;
1248 struct gl_texture_object
*Default3D
;
1249 struct gl_texture_object
*DefaultCubeMap
;
1250 struct gl_texture_object
*DefaultRect
;
1252 /* GL_NV_vertex/_program */
1253 struct _mesa_HashTable
*Programs
;
1255 void *DriverData
; /* Device driver shared state */
1260 * A "frame buffer" is a color buffer and its optional ancillary buffers:
1261 * depth, accum, stencil, and software-simulated alpha buffers.
1262 * In C++ terms, think of this as a base class from which device drivers
1263 * will make derived classes.
1265 struct gl_frame_buffer
{
1266 GLvisual Visual
; /* The corresponding visual */
1268 GLuint Width
, Height
; /* size of frame buffer in pixels */
1270 GLboolean UseSoftwareDepthBuffer
;
1271 GLboolean UseSoftwareAccumBuffer
;
1272 GLboolean UseSoftwareStencilBuffer
;
1273 GLboolean UseSoftwareAlphaBuffers
;
1275 /* Software depth (aka Z) buffer */
1276 GLvoid
*DepthBuffer
; /* array [Width*Height] of GLushort or GLuint*/
1278 /* Software stencil buffer */
1279 GLstencil
*Stencil
; /* array [Width*Height] of GLstencil values */
1281 /* Software accumulation buffer */
1282 GLaccum
*Accum
; /* array [4*Width*Height] of GLaccum values */
1284 /* Software alpha planes */
1285 GLvoid
*FrontLeftAlpha
; /* array [Width*Height] of GLubyte */
1286 GLvoid
*BackLeftAlpha
; /* array [Width*Height] of GLubyte */
1287 GLvoid
*FrontRightAlpha
; /* array [Width*Height] of GLubyte */
1288 GLvoid
*BackRightAlpha
; /* array [Width*Height] of GLubyte */
1290 /* Drawing bounds: intersection of window size and scissor box */
1291 GLint _Xmin
, _Ymin
; /* inclusive */
1292 GLint _Xmax
, _Ymax
; /* exclusive */
1297 * Constants which may be overriden by device driver during context creation
1298 * but are never changed after that.
1300 struct gl_constants
{
1301 GLint MaxTextureLevels
;
1302 GLint Max3DTextureLevels
;
1303 GLint MaxCubeTextureLevels
; /* GL_ARB_texture_cube_map */
1304 GLint MaxTextureRectSize
; /* GL_NV_texture_rectangle */
1305 GLuint MaxTextureUnits
;
1306 GLuint MaxTextureCoordUnits
;
1307 GLuint MaxTextureImageUnits
;
1308 GLfloat MaxTextureMaxAnisotropy
; /* GL_EXT_texture_filter_anisotropic */
1309 GLfloat MaxTextureLodBias
; /* GL_EXT_texture_lod_bias */
1310 GLuint MaxArrayLockSize
;
1312 GLfloat MinPointSize
, MaxPointSize
; /* aliased */
1313 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /* antialiased */
1314 GLfloat PointSizeGranularity
;
1315 GLfloat MinLineWidth
, MaxLineWidth
; /* aliased */
1316 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /* antialiased */
1317 GLfloat LineWidthGranularity
;
1318 GLuint NumAuxBuffers
;
1319 GLuint MaxColorTableSize
;
1320 GLuint MaxConvolutionWidth
;
1321 GLuint MaxConvolutionHeight
;
1322 GLuint MaxClipPlanes
;
1328 * List of extensions.
1331 struct gl_extensions
{
1333 struct extension
*ext_list
;
1334 /* Flags to quickly test if certain extensions are available.
1335 * Not every extension needs to have such a flag, but it's encouraged.
1337 GLboolean ARB_depth_texture
;
1338 GLboolean ARB_imaging
;
1339 GLboolean ARB_multisample
;
1340 GLboolean ARB_multitexture
;
1341 GLboolean ARB_shadow
;
1342 GLboolean ARB_texture_border_clamp
;
1343 GLboolean ARB_texture_compression
;
1344 GLboolean ARB_texture_cube_map
;
1345 GLboolean ARB_texture_env_combine
;
1346 GLboolean ARB_texture_env_crossbar
;
1347 GLboolean ARB_texture_env_dot3
;
1348 GLboolean ARB_texture_mirrored_repeat
;
1349 GLboolean ARB_window_pos
;
1350 GLboolean ATI_texture_mirror_once
;
1351 GLboolean EXT_blend_color
;
1352 GLboolean EXT_blend_func_separate
;
1353 GLboolean EXT_blend_logic_op
;
1354 GLboolean EXT_blend_minmax
;
1355 GLboolean EXT_blend_subtract
;
1356 GLboolean EXT_clip_volume_hint
;
1357 GLboolean EXT_convolution
;
1358 GLboolean EXT_compiled_vertex_array
;
1359 GLboolean EXT_fog_coord
;
1360 GLboolean EXT_histogram
;
1361 GLboolean EXT_multi_draw_arrays
;
1362 GLboolean EXT_packed_pixels
;
1363 GLboolean EXT_paletted_texture
;
1364 GLboolean EXT_point_parameters
;
1365 GLboolean EXT_polygon_offset
;
1366 GLboolean EXT_rescale_normal
;
1367 GLboolean EXT_shadow_funcs
;
1368 GLboolean EXT_secondary_color
;
1369 GLboolean EXT_shared_texture_palette
;
1370 GLboolean EXT_stencil_wrap
;
1371 GLboolean EXT_stencil_two_side
;
1372 GLboolean EXT_texture3D
;
1373 GLboolean EXT_texture_compression_s3tc
;
1374 GLboolean EXT_texture_env_add
;
1375 GLboolean EXT_texture_env_combine
;
1376 GLboolean EXT_texture_env_dot3
;
1377 GLboolean EXT_texture_filter_anisotropic
;
1378 GLboolean EXT_texture_object
;
1379 GLboolean EXT_texture_lod_bias
;
1380 GLboolean EXT_vertex_array_set
;
1381 GLboolean HP_occlusion_test
;
1382 GLboolean IBM_rasterpos_clip
;
1383 GLboolean INGR_blend_func_separate
;
1384 GLboolean MESA_pack_invert
;
1385 GLboolean MESA_window_pos
;
1386 GLboolean MESA_resize_buffers
;
1387 GLboolean MESA_ycbcr_texture
;
1388 GLboolean NV_blend_square
;
1389 GLboolean NV_fragment_program
;
1390 GLboolean NV_point_sprite
;
1391 GLboolean NV_texture_rectangle
;
1392 GLboolean NV_texgen_reflection
;
1393 GLboolean NV_vertex_program
;
1394 GLboolean NV_vertex_program1_1
;
1395 GLboolean SGI_color_matrix
;
1396 GLboolean SGI_color_table
;
1397 GLboolean SGIS_generate_mipmap
;
1398 GLboolean SGIS_pixel_texture
;
1399 GLboolean SGIS_texture_edge_clamp
;
1400 GLboolean SGIX_depth_texture
;
1401 GLboolean SGIX_pixel_texture
;
1402 GLboolean SGIX_shadow
;
1403 GLboolean SGIX_shadow_ambient
; /* or GL_ARB_shadow_ambient */
1404 GLboolean TDFX_texture_compression_FXT1
;
1405 GLboolean APPLE_client_storage
;
1410 * A stack of matrices (projection, modelview, color, texture, etc).
1414 GLmatrix
*Top
; /* points into Stack */
1415 GLmatrix
*Stack
; /* array [MaxDepth] of GLmatrix */
1416 GLuint Depth
; /* 0 <= Depth < MaxDepth */
1417 GLuint MaxDepth
; /* size of Stack[] array */
1418 GLuint DirtyFlag
; /* _NEW_MODELVIEW or _NEW_PROJECTION, for example */
1423 * Bits for image transfer operations (ctx->ImageTransferState).
1425 #define IMAGE_SCALE_BIAS_BIT 0x1
1426 #define IMAGE_SHIFT_OFFSET_BIT 0x2
1427 #define IMAGE_MAP_COLOR_BIT 0x4
1428 #define IMAGE_COLOR_TABLE_BIT 0x8
1429 #define IMAGE_CONVOLUTION_BIT 0x10
1430 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
1431 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
1432 #define IMAGE_COLOR_MATRIX_BIT 0x80
1433 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
1434 #define IMAGE_HISTOGRAM_BIT 0x200
1435 #define IMAGE_MIN_MAX_BIT 0x400
1437 /* transfer ops up to convolution: */
1438 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
1439 IMAGE_SHIFT_OFFSET_BIT | \
1440 IMAGE_MAP_COLOR_BIT | \
1441 IMAGE_COLOR_TABLE_BIT)
1443 /* transfer ops after convolution: */
1444 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
1445 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
1446 IMAGE_COLOR_MATRIX_BIT | \
1447 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
1448 IMAGE_HISTOGRAM_BIT | \
1453 * Bits to indicate what state has changed. 6 unused flags.
1455 #define _NEW_MODELVIEW 0x1 /* ctx->ModelView */
1456 #define _NEW_PROJECTION 0x2 /* ctx->Projection */
1457 #define _NEW_TEXTURE_MATRIX 0x4 /* ctx->TextureMatrix */
1458 #define _NEW_COLOR_MATRIX 0x8 /* ctx->ColorMatrix */
1459 #define _NEW_ACCUM 0x10 /* ctx->Accum */
1460 #define _NEW_COLOR 0x20 /* ctx->Color */
1461 #define _NEW_DEPTH 0x40 /* ctx->Depth */
1462 #define _NEW_EVAL 0x80 /* ctx->Eval, ctx->EvalMap */
1463 #define _NEW_FOG 0x100 /* ctx->Fog */
1464 #define _NEW_HINT 0x200 /* ctx->Hint */
1465 #define _NEW_LIGHT 0x400 /* ctx->Light */
1466 #define _NEW_LINE 0x800 /* ctx->Line */
1467 #define _NEW_PIXEL 0x1000 /* ctx->Pixel */
1468 #define _NEW_POINT 0x2000 /* ctx->Point */
1469 #define _NEW_POLYGON 0x4000 /* ctx->Polygon */
1470 #define _NEW_POLYGONSTIPPLE 0x8000 /* ctx->PolygonStipple */
1471 #define _NEW_SCISSOR 0x10000 /* ctx->Scissor */
1472 #define _NEW_STENCIL 0x20000 /* ctx->Stencil */
1473 #define _NEW_TEXTURE 0x40000 /* ctx->Texture */
1474 #define _NEW_TRANSFORM 0x80000 /* ctx->Transform */
1475 #define _NEW_VIEWPORT 0x100000 /* ctx->Viewport */
1476 #define _NEW_PACKUNPACK 0x200000 /* ctx->Pack, ctx->Unpack */
1477 #define _NEW_ARRAY 0x400000 /* ctx->Array */
1478 #define _NEW_RENDERMODE 0x800000 /* RenderMode, Feedback, Select */
1479 #define _NEW_BUFFERS 0x1000000 /* ctx->Visual, ctx->DrawBuffer, */
1480 #define _NEW_MULTISAMPLE 0x2000000 /* ctx->Multisample */
1481 #define _NEW_TRACK_MATRIX 0x4000000 /* ctx->VertexProgram */
1482 #define _NEW_PROGRAM 0x8000000 /* ctx->VertexProgram */
1487 /* Bits to track array state changes (also used to summarize array enabled)
1489 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
1490 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
1491 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
1492 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
1493 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
1494 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
1495 #define _NEW_ARRAY_INDEX VERT_BIT_SIX
1496 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_SEVEN
1497 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
1498 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
1499 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
1500 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
1501 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
1502 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
1503 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
1504 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
1505 #define _NEW_ARRAY_ATTRIB_0 0x10000 /* start at bit 16 */
1506 #define _NEW_ARRAY_ALL 0xffffffff
1509 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
1510 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
1513 /* A bunch of flags that we think might be useful to drivers.
1514 * Set in the ctx->_TriangleCaps bitfield.
1516 #define DD_FLATSHADE 0x1
1517 #define DD_SEPARATE_SPECULAR 0x2
1518 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
1519 #define DD_TRI_LIGHT_TWOSIDE 0x8
1520 #define DD_TRI_UNFILLED 0x10
1521 #define DD_TRI_SMOOTH 0x20
1522 #define DD_TRI_STIPPLE 0x40
1523 #define DD_TRI_OFFSET 0x80
1524 #define DD_LINE_SMOOTH 0x100
1525 #define DD_LINE_STIPPLE 0x200
1526 #define DD_LINE_WIDTH 0x400
1527 #define DD_POINT_SMOOTH 0x800
1528 #define DD_POINT_SIZE 0x1000
1529 #define DD_POINT_ATTEN 0x2000
1532 /* Define the state changes under which each of these bits might change
1534 #define _DD_NEW_FLATSHADE _NEW_LIGHT
1535 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG)
1536 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
1537 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
1538 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
1539 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
1540 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
1541 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
1542 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
1543 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
1544 #define _DD_NEW_LINE_WIDTH _NEW_LINE
1545 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
1546 #define _DD_NEW_POINT_SIZE _NEW_POINT
1547 #define _DD_NEW_POINT_ATTEN _NEW_POINT
1549 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
1554 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
1557 #define _IMAGE_NEW_TRANSFER_STATE (_NEW_PIXEL | _NEW_COLOR_MATRIX)
1560 /* Bits for ctx->_NeedNormals */
1561 #define NEED_NORMALS_TEXGEN 0x1
1562 #define NEED_NORMALS_LIGHT 0x2
1564 /* Bits for ctx->_NeedEyeCoords */
1565 #define NEED_EYE_TEXGEN 0x1
1566 #define NEED_EYE_LIGHT 0x2
1567 #define NEED_EYE_LIGHT_MODELVIEW 0x4
1568 #define NEED_EYE_POINT_ATTEN 0x8
1569 #define NEED_EYE_DRIVER 0x10
1573 * Forward declaration of display list datatypes:
1576 typedef union node Node
;
1579 /* This has to be included here. */
1584 * Core Mesa's support for tnl modules:
1586 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
1588 struct gl_tnl_module
{
1589 /* Vertex format to be lazily swapped into current dispatch.
1591 GLvertexformat
*Current
;
1593 /* Record of functions swapped out. On restore, only need to swap
1594 * these functions back in.
1596 void *Swapped
[NUM_VERTEX_FORMAT_ENTRIES
][2];
1602 * This is the central context data structure for Mesa. Almost all
1603 * OpenGL state is contained in this structure.
1604 * Think of this as a base class from which device drivers will derive
1607 struct __GLcontextRec
{
1609 * OS related interfaces; these *must* be the first members of this
1610 * structure, because they are exposed to the outside world (i.e. GLX
1613 __GLimports imports
;
1614 __GLexports exports
;
1616 /* State possibly shared with other contexts in the address space */
1617 struct gl_shared_state
*Shared
;
1619 /* API function pointer tables */
1620 struct _glapi_table
*Save
; /**< Display list save funcs */
1621 struct _glapi_table
*Exec
; /**< Execute funcs */
1622 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
1624 GLboolean ExecPrefersFloat
; /**< What preference for color conversion? */
1625 GLboolean SavePrefersFloat
;
1628 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
1629 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
1632 * Device driver function pointer table
1634 struct dd_function_table Driver
;
1636 void *DriverCtx
; /**< Points to device driver context/state */
1637 void *DriverMgrCtx
; /**< Points to device driver manager (optional)*/
1639 /* Core/Driver constants */
1640 struct gl_constants Const
;
1642 /* The various 4x4 matrix stacks */
1643 struct matrix_stack ModelviewMatrixStack
;
1644 struct matrix_stack ProjectionMatrixStack
;
1645 struct matrix_stack ColorMatrixStack
;
1646 struct matrix_stack TextureMatrixStack
[MAX_TEXTURE_COORD_UNITS
];
1647 struct matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
1648 struct matrix_stack
*CurrentStack
; /* Points to one of the above stacks */
1650 /* Combined modelview and projection matrix */
1651 GLmatrix _ModelProjectMatrix
;
1654 GLuint CallDepth
; /* Current recursion calling depth */
1655 GLboolean ExecuteFlag
; /* Execute GL commands? */
1656 GLboolean CompileFlag
; /* Compile GL commands into display list? */
1657 Node
*CurrentListPtr
; /* Head of list being compiled */
1658 GLuint CurrentListNum
; /* Number of the list being compiled */
1659 Node
*CurrentBlock
; /* Pointer to current block of nodes */
1660 GLuint CurrentPos
; /* Index into current block of nodes */
1663 struct gl_extensions Extensions
;
1665 /* Renderer attribute stack */
1666 GLuint AttribStackDepth
;
1667 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
1669 /* Renderer attribute groups */
1670 struct gl_accum_attrib Accum
;
1671 struct gl_colorbuffer_attrib Color
;
1672 struct gl_current_attrib Current
;
1673 struct gl_depthbuffer_attrib Depth
;
1674 struct gl_eval_attrib Eval
;
1675 struct gl_fog_attrib Fog
;
1676 struct gl_hint_attrib Hint
;
1677 struct gl_light_attrib Light
;
1678 struct gl_line_attrib Line
;
1679 struct gl_list_attrib List
;
1680 struct gl_multisample_attrib Multisample
;
1681 struct gl_pixel_attrib Pixel
;
1682 struct gl_point_attrib Point
;
1683 struct gl_polygon_attrib Polygon
;
1684 GLuint PolygonStipple
[32];
1685 struct gl_scissor_attrib Scissor
;
1686 struct gl_stencil_attrib Stencil
;
1687 struct gl_texture_attrib Texture
;
1688 struct gl_transform_attrib Transform
;
1689 struct gl_viewport_attrib Viewport
;
1691 /* Other attribute groups */
1692 struct gl_histogram_attrib Histogram
;
1693 struct gl_minmax_attrib MinMax
;
1694 struct gl_convolution_attrib Convolution1D
;
1695 struct gl_convolution_attrib Convolution2D
;
1696 struct gl_convolution_attrib Separable2D
;
1698 /* Client attribute stack */
1699 GLuint ClientAttribStackDepth
;
1700 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
1702 /* Client attribute groups */
1703 struct gl_array_attrib Array
; /* Vertex arrays */
1704 struct gl_pixelstore_attrib Pack
; /* Pixel packing */
1705 struct gl_pixelstore_attrib Unpack
; /* Pixel unpacking */
1707 struct gl_evaluators EvalMap
; /* All evaluators */
1708 struct gl_feedback Feedback
; /* Feedback */
1709 struct gl_selection Select
; /* Selection */
1711 struct gl_color_table ColorTable
; /* Pre-convolution */
1712 struct gl_color_table ProxyColorTable
; /* Pre-convolution */
1713 struct gl_color_table PostConvolutionColorTable
;
1714 struct gl_color_table ProxyPostConvolutionColorTable
;
1715 struct gl_color_table PostColorMatrixColorTable
;
1716 struct gl_color_table ProxyPostColorMatrixColorTable
;
1718 struct program_state Program
; /* for vertex or fragment progs */
1719 struct vertex_program_state VertexProgram
; /* GL_NV_vertex_program */
1720 struct fragment_program_state FragmentProgram
; /* GL_NV_fragment_program */
1722 GLenum ErrorValue
; /* Last error code */
1723 GLenum RenderMode
; /* either GL_RENDER, GL_SELECT, GL_FEEDBACK */
1724 GLuint NewState
; /* bitwise-or of _NEW_* flags */
1727 GLuint _TriangleCaps
; /* bitwise-or of DD_* flags */
1728 GLuint _ImageTransferState
;/* bitwise-or of IMAGE_*_BIT flags */
1729 GLfloat _EyeZDir
[3];
1730 GLfloat _ModelViewInvScale
;
1731 GLuint _NeedEyeCoords
;
1732 GLuint _NeedNormals
; /* Are vertex normal vectors needed? */
1734 struct gl_shine_tab
*_ShineTable
[2]; /* Active shine tables */
1735 struct gl_shine_tab
*_ShineTabList
; /* Mru list of inactive shine tables */
1737 struct gl_list_extensions listext
; /* driver dlist extensions */
1740 GLboolean OcclusionResult
; /**< for GL_HP_occlusion_test */
1741 GLboolean OcclusionResultSaved
; /**< for GL_HP_occlusion_test */
1742 GLuint _Facing
; /* This is a hack for 2-sided stencil test. We don't */
1743 /* have a better way to communicate this value from */
1744 /* swrast_setup to swrast. */
1747 /* Z buffer stuff */
1748 GLuint DepthMax
; /**< Max depth buffer value */
1749 GLfloat DepthMaxF
; /**< Float max depth buffer value */
1750 GLfloat MRD
; /**< minimum resolvable difference in Z values */
1752 /** Should 3Dfx Glide driver catch signals? */
1753 GLboolean CatchSignals
;
1755 /** For debugging/development only */
1757 GLboolean FirstTimeCurrent
;
1759 /** Dither disable via MESA_NO_DITHER env var */
1762 GLboolean Rendering
;
1764 #if defined(MESA_TRACE)
1765 struct _glapi_table
*TraceDispatch
;
1766 trace_context_t
*TraceCtx
;
1768 void *TraceDispatch
;
1772 /* Core tnl module support */
1773 struct gl_tnl_module TnlModule
;
1775 /* Hooks for module contexts. These will eventually live
1776 * in the driver or elsewhere.
1778 void *swrast_context
;
1779 void *swsetup_context
;
1780 void *swtnl_context
;
1782 void *acache_context
;
1787 /* The string names for GL_POINT, GL_LINE_LOOP, etc */
1788 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
1795 extern int MESA_VERBOSE
;
1796 extern int MESA_DEBUG_FLAGS
;
1798 # define MESA_VERBOSE 0
1799 # define MESA_DEBUG_FLAGS 0
1807 VERBOSE_VARRAY
= 0x0001,
1808 VERBOSE_TEXTURE
= 0x0002,
1809 VERBOSE_IMMEDIATE
= 0x0004,
1810 VERBOSE_PIPELINE
= 0x0008,
1811 VERBOSE_DRIVER
= 0x0010,
1812 VERBOSE_STATE
= 0x0020,
1813 VERBOSE_API
= 0x0040,
1814 VERBOSE_DISPLAY_LIST
= 0x0100,
1815 VERBOSE_LIGHTING
= 0x0200,
1816 VERBOSE_PRIMS
= 0x0400,
1817 VERBOSE_VERTS
= 0x0800
1822 DEBUG_ALWAYS_FLUSH
= 0x1
1827 #define Elements(x) sizeof(x)/sizeof(*(x))
1830 /* Eventually let the driver specify what statechanges require a flush:
1832 #define FLUSH_VERTICES(ctx, newstate) \
1834 if (MESA_VERBOSE & VERBOSE_STATE) \
1835 _mesa_debug(ctx, "FLUSH_VERTICES in %s\n", __FUNCTION__); \
1836 if (ctx->Driver.NeedFlush & FLUSH_STORED_VERTICES) \
1837 ctx->Driver.FlushVertices(ctx, FLUSH_STORED_VERTICES); \
1838 ctx->NewState |= newstate; \
1841 #define FLUSH_CURRENT(ctx, newstate) \
1843 if (MESA_VERBOSE & VERBOSE_STATE) \
1844 _mesa_debug(ctx, "FLUSH_CURRENT in %s\n", __FUNCTION__); \
1845 if (ctx->Driver.NeedFlush & FLUSH_UPDATE_CURRENT) \
1846 ctx->Driver.FlushVertices(ctx, FLUSH_UPDATE_CURRENT); \
1847 ctx->NewState |= newstate; \
1850 #define ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval) \
1852 if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) { \
1853 _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" ); \
1858 #define ASSERT_OUTSIDE_BEGIN_END(ctx) \
1860 if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) { \
1861 _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" ); \
1866 #define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx) \
1868 ASSERT_OUTSIDE_BEGIN_END(ctx); \
1869 FLUSH_VERTICES(ctx, 0); \
1872 #define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, retval) \
1874 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval); \
1875 FLUSH_VERTICES(ctx, 0); \
1881 #endif /* TYPES_H */