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 "config.h" /* Hardwired parameters */
40 #include "glapitable.h"
42 #include "math/m_matrix.h" /* GLmatrix */
46 * Color channel data type.
49 typedef GLubyte GLchan;
51 #define CHAN_MAXF 255.0F
52 #define CHAN_TYPE GL_UNSIGNED_BYTE
54 typedef GLushort GLchan;
55 #define CHAN_MAX 65535
56 #define CHAN_MAXF 65535.0F
57 #define CHAN_TYPE GL_UNSIGNED_SHORT
59 typedef GLfloat GLchan;
61 #define CHAN_MAXF 1.0F
62 #define CHAN_TYPE GL_FLOAT
64 #error "illegal number of color channel bits"
69 * Accumulation buffer data type.
72 typedef GLbyte GLaccum;
74 typedef GLshort GLaccum;
76 typedef GLfloat GLaccum;
78 # error "illegal number of accumulation bits"
83 * Stencil buffer data type.
86 typedef GLubyte GLstencil;
87 # define STENCIL_MAX 0xff
88 #elif STENCIL_BITS==16
89 typedef GLushort GLstencil;
90 # define STENCIL_MAX 0xffff
92 # error "illegal number of stencil bits"
97 * Depth buffer data type.
99 * \note Must be 32-bits!
101 typedef GLuint GLdepth;
105 * Fixed point data type.
109 * Fixed point arithmetic macros
111 #ifndef FIXED_FRAC_BITS
112 #define FIXED_FRAC_BITS 11
115 #define FIXED_SHIFT FIXED_FRAC_BITS
116 #define FIXED_ONE (1 << FIXED_SHIFT)
117 #define FIXED_HALF (1 << (FIXED_SHIFT-1))
118 #define FIXED_FRAC_MASK (FIXED_ONE - 1)
119 #define FIXED_INT_MASK (~FIXED_FRAC_MASK)
120 #define FIXED_EPSILON 1
121 #define FIXED_SCALE ((float) FIXED_ONE)
122 #define FIXED_DBL_SCALE ((double) FIXED_ONE)
123 #define FloatToFixed(X) (IROUND((X) * FIXED_SCALE))
124 #define FixedToDouble(X) ((X) * (1.0 / FIXED_DBL_SCALE))
125 #define IntToFixed(I) ((I) << FIXED_SHIFT)
126 #define FixedToInt(X) ((X) >> FIXED_SHIFT)
127 #define FixedToUns(X) (((unsigned int)(X)) >> FIXED_SHIFT)
128 #define FixedCeil(X) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
129 #define FixedFloor(X) ((X) & FIXED_INT_MASK)
130 #define FixedToFloat(X) ((X) * (1.0F / FIXED_SCALE))
131 #define PosFloatToFixed(X) FloatToFixed(X)
132 #define SignedFloatToFixed(X) FloatToFixed(X)
137 * \name Some forward type declarations
140 struct _mesa_HashTable;
141 struct gl_texture_image;
142 struct gl_texture_object;
143 typedef struct __GLcontextRec GLcontext;
144 typedef struct __GLcontextModesRec GLvisual;
145 typedef struct gl_frame_buffer GLframebuffer;
146 struct gl_pixelstore_attrib;
147 struct gl_texture_format;
153 * Indexes for vertex program attributes.
154 * GL_NV_vertex_program aliases generic attributes over the conventional
155 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
156 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
157 * generic attributes are distinct/separate).
162 VERT_ATTRIB_WEIGHT = 1,
163 VERT_ATTRIB_NORMAL = 2,
164 VERT_ATTRIB_COLOR0 = 3,
165 VERT_ATTRIB_COLOR1 = 4,
168 VERT_ATTRIB_SEVEN = 7,
169 VERT_ATTRIB_TEX0 = 8,
170 VERT_ATTRIB_TEX1 = 9,
171 VERT_ATTRIB_TEX2 = 10,
172 VERT_ATTRIB_TEX3 = 11,
173 VERT_ATTRIB_TEX4 = 12,
174 VERT_ATTRIB_TEX5 = 13,
175 VERT_ATTRIB_TEX6 = 14,
176 VERT_ATTRIB_TEX7 = 15,
177 VERT_ATTRIB_GENERIC0 = 16,
178 VERT_ATTRIB_GENERIC1 = 17,
179 VERT_ATTRIB_GENERIC2 = 18,
180 VERT_ATTRIB_GENERIC3 = 19,
185 * Bitflags for vertex attributes.
186 * These are used in bitfields in many places.
189 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
190 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
191 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
192 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
193 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
194 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
195 #define VERT_BIT_SIX (1 << VERT_ATTRIB_SIX)
196 #define VERT_BIT_SEVEN (1 << VERT_ATTRIB_SEVEN)
197 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
198 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
199 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
200 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
201 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
202 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
203 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
204 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
205 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
206 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
207 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
208 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
210 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
211 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
216 * Indexes for fragment program input attributes.
220 FRAG_ATTRIB_WPOS = 0,
221 FRAG_ATTRIB_COL0 = 1,
222 FRAG_ATTRIB_COL1 = 2,
223 FRAG_ATTRIB_FOGC = 3,
224 FRAG_ATTRIB_TEX0 = 4,
225 FRAG_ATTRIB_TEX1 = 5,
226 FRAG_ATTRIB_TEX2 = 6,
227 FRAG_ATTRIB_TEX3 = 7,
228 FRAG_ATTRIB_TEX4 = 8,
229 FRAG_ATTRIB_TEX5 = 9,
230 FRAG_ATTRIB_TEX6 = 10,
231 FRAG_ATTRIB_TEX7 = 11
235 * Bitflags for fragment attributes.
238 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
239 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
240 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
241 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
242 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
243 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
244 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
245 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
246 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
247 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
248 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
249 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
251 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
263 * Bits for each basic buffer in a complete framebuffer.
264 * When glDrawBuffer(GL_FRONT_AND_BACK) is called (non-stereo),
265 * _DrawDestMask will be set to (DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT),
266 * for example. Also passed to ctx->Driver.Clear() to indicate which
270 #define DD_FRONT_LEFT_BIT 0x1
271 #define DD_FRONT_RIGHT_BIT 0x2
272 #define DD_BACK_LEFT_BIT 0x4
273 #define DD_BACK_RIGHT_BIT 0x8
274 #define DD_AUX0_BIT 0x10
275 #define DD_AUX1_BIT 0x20
276 #define DD_AUX2_BIT 0x40
277 #define DD_AUX3_BIT 0x80
278 #define DD_DEPTH_BIT GL_DEPTH_BUFFER_BIT /* 0x00000100 */
279 #define DD_ACCUM_BIT GL_ACCUM_BUFFER_BIT /* 0x00000200 */
280 #define DD_STENCIL_BIT GL_STENCIL_BUFFER_BIT /* 0x00000400 */
285 * Data structure for color tables
287 struct gl_color_table
289 GLenum Format; /**< GL_ALPHA, GL_RGB, GL_RGB, etc */
291 GLuint Size; /**< number of entries (rows) in table */
292 GLvoid *Table; /**< points to data of <Type> */
293 GLenum Type; /**< GL_UNSIGNED_BYTE or GL_FLOAT */
298 GLubyte LuminanceSize;
299 GLubyte IntensitySize;
304 * \name Bit flags used for updating material values.
307 #define MAT_ATTRIB_FRONT_AMBIENT 0
308 #define MAT_ATTRIB_BACK_AMBIENT 1
309 #define MAT_ATTRIB_FRONT_DIFFUSE 2
310 #define MAT_ATTRIB_BACK_DIFFUSE 3
311 #define MAT_ATTRIB_FRONT_SPECULAR 4
312 #define MAT_ATTRIB_BACK_SPECULAR 5
313 #define MAT_ATTRIB_FRONT_EMISSION 6
314 #define MAT_ATTRIB_BACK_EMISSION 7
315 #define MAT_ATTRIB_FRONT_SHININESS 8
316 #define MAT_ATTRIB_BACK_SHININESS 9
317 #define MAT_ATTRIB_FRONT_INDEXES 10
318 #define MAT_ATTRIB_BACK_INDEXES 11
319 #define MAT_ATTRIB_MAX 12
321 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
322 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
323 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
324 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
325 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
326 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
328 #define MAT_INDEX_AMBIENT 0
329 #define MAT_INDEX_DIFFUSE 1
330 #define MAT_INDEX_SPECULAR 2
332 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
333 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
334 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
335 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
336 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
337 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
338 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
339 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
340 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
341 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
342 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
343 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
346 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
347 MAT_BIT_FRONT_AMBIENT | \
348 MAT_BIT_FRONT_DIFFUSE | \
349 MAT_BIT_FRONT_SPECULAR | \
350 MAT_BIT_FRONT_SHININESS | \
351 MAT_BIT_FRONT_INDEXES)
353 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
354 MAT_BIT_BACK_AMBIENT | \
355 MAT_BIT_BACK_DIFFUSE | \
356 MAT_BIT_BACK_SPECULAR | \
357 MAT_BIT_BACK_SHININESS | \
358 MAT_BIT_BACK_INDEXES)
360 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
364 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
365 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
368 * Material shininess lookup table.
372 struct gl_shine_tab *next, *prev;
373 GLfloat tab[SHINE_TABLE_SIZE+1];
380 * Light source state.
384 struct gl_light *next; /**< double linked list with sentinel */
385 struct gl_light *prev;
387 GLfloat Ambient[4]; /**< ambient color */
388 GLfloat Diffuse[4]; /**< diffuse color */
389 GLfloat Specular[4]; /**< specular color */
390 GLfloat EyePosition[4]; /**< position in eye coordinates */
391 GLfloat EyeDirection[4]; /**< spotlight dir in eye coordinates */
392 GLfloat SpotExponent;
393 GLfloat SpotCutoff; /**< in degrees */
394 GLfloat _CosCutoff; /**< = MAX(0, cos(SpotCutoff)) */
395 GLfloat ConstantAttenuation;
396 GLfloat LinearAttenuation;
397 GLfloat QuadraticAttenuation;
398 GLboolean Enabled; /**< On/off flag */
401 * \name Derived fields
404 GLuint _Flags; /**< State */
406 GLfloat _Position[4]; /**< position in eye/obj coordinates */
407 GLfloat _VP_inf_norm[3]; /**< Norm direction to infinite light */
408 GLfloat _h_inf_norm[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
409 GLfloat _NormDirection[4]; /**< normalized spotlight direction */
410 GLfloat _VP_inf_spot_attenuation;
412 GLfloat _SpotExpTable[EXP_TABLE_SIZE][2]; /**< to replace a pow() call */
413 GLfloat _MatAmbient[2][3]; /**< material ambient * light ambient */
414 GLfloat _MatDiffuse[2][3]; /**< material diffuse * light diffuse */
415 GLfloat _MatSpecular[2][3]; /**< material spec * light specular */
416 GLfloat _dli; /**< CI diffuse light intensity */
417 GLfloat _sli; /**< CI specular light intensity */
427 GLfloat Ambient[4]; /**< ambient color */
428 GLboolean LocalViewer; /**< Local (or infinite) view point? */
429 GLboolean TwoSide; /**< Two (or one) sided lighting? */
430 GLenum ColorControl; /**< either GL_SINGLE_COLOR
431 * or GL_SEPARATE_SPECULAR_COLOR */
440 GLfloat Attrib[MAT_ATTRIB_MAX][4];
445 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
447 struct gl_accum_attrib
449 GLfloat ClearColor[4]; /**< Accumulation buffer clear color */
454 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
456 struct gl_colorbuffer_attrib
458 GLuint ClearIndex; /**< Index to use for glClear */
459 GLclampf ClearColor[4]; /**< Color to use for glClear */
461 GLuint IndexMask; /**< Color index write mask */
462 GLubyte ColorMask[4]; /**< Each flag is 0xff or 0x0 */
464 GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */
465 GLbitfield _DrawDestMask[MAX_DRAW_BUFFERS];/**< bitmask of DD_*_BIT bits */
468 * \name alpha testing
471 GLboolean AlphaEnabled; /**< Alpha test enabled flag */
472 GLenum AlphaFunc; /**< Alpha test function */
473 GLclampf AlphaRef; /**< Alpha reference value */
480 GLboolean BlendEnabled; /**< Blending enabled flag */
481 GLenum BlendSrcRGB; /**< Blending source operator */
482 GLenum BlendDstRGB; /**< Blending destination operator */
483 GLenum BlendSrcA; /**< GL_INGR_blend_func_separate */
484 GLenum BlendDstA; /**< GL_INGR_blend_func_separate */
485 GLenum BlendEquationRGB; /**< Blending equation */
486 GLenum BlendEquationA; /**< GL_EXT_blend_equation_separate */
487 GLfloat BlendColor[4]; /**< Blending color */
494 GLenum LogicOp; /**< Logic operator */
495 GLboolean IndexLogicOpEnabled; /**< Color index logic op enabled flag */
496 GLboolean ColorLogicOpEnabled; /**< RGBA logic op enabled flag */
497 GLboolean _LogicOpEnabled; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
500 GLboolean DitherFlag; /**< Dither enable flag */
505 * Current attribute group (GL_CURRENT_BIT).
507 struct gl_current_attrib
510 * \name Values valid only when FLUSH_VERTICES has been called.
513 GLfloat Attrib[VERT_ATTRIB_MAX][4]; /**< Current vertex attributes
514 * indexed by VERT_ATTRIB_* */
515 GLfloat Index; /**< Current color index */
516 GLboolean EdgeFlag; /**< Current edge flag */
520 * \name Values are always valid.
522 * \note BTW, note how similar this set of attributes is to the SWvertex
523 * data type in the software rasterizer...
526 GLfloat RasterPos[4]; /**< Current raster position */
527 GLfloat RasterDistance; /**< Current raster distance */
528 GLfloat RasterColor[4]; /**< Current raster color */
529 GLfloat RasterSecondaryColor[4]; /**< Current raster secondary color */
530 GLfloat RasterIndex; /**< Current raster index */
531 GLfloat RasterTexCoords[MAX_TEXTURE_UNITS][4];/**< Current raster texcoords */
532 GLboolean RasterPosValid; /**< Raster pos valid flag */
538 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
540 struct gl_depthbuffer_attrib
542 GLenum Func; /**< Function for depth buffer compare */
543 GLclampd Clear; /**< Value to clear depth buffer to */
544 GLboolean Test; /**< Depth buffering enabled flag */
545 GLboolean Mask; /**< Depth buffer writable? */
546 GLboolean OcclusionTest; /**< GL_HP_occlusion_test */
547 GLboolean BoundsTest; /**< GL_EXT_depth_bounds_test */
548 GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
553 * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
555 struct gl_enable_attrib
558 GLboolean AutoNormal;
561 GLboolean ColorMaterial;
562 GLboolean ColorTable; /* SGI_color_table */
563 GLboolean PostColorMatrixColorTable; /* SGI_color_table */
564 GLboolean PostConvolutionColorTable; /* SGI_color_table */
565 GLboolean Convolution1D;
566 GLboolean Convolution2D;
567 GLboolean Separable2D;
573 GLboolean Light[MAX_LIGHTS];
575 GLboolean LineSmooth;
576 GLboolean LineStipple;
577 GLboolean IndexLogicOp;
578 GLboolean ColorLogicOp;
579 GLboolean Map1Color4;
581 GLboolean Map1Normal;
582 GLboolean Map1TextureCoord1;
583 GLboolean Map1TextureCoord2;
584 GLboolean Map1TextureCoord3;
585 GLboolean Map1TextureCoord4;
586 GLboolean Map1Vertex3;
587 GLboolean Map1Vertex4;
588 GLboolean Map1Attrib[16]; /* GL_NV_vertex_program */
589 GLboolean Map2Color4;
591 GLboolean Map2Normal;
592 GLboolean Map2TextureCoord1;
593 GLboolean Map2TextureCoord2;
594 GLboolean Map2TextureCoord3;
595 GLboolean Map2TextureCoord4;
596 GLboolean Map2Vertex3;
597 GLboolean Map2Vertex4;
598 GLboolean Map2Attrib[16]; /* GL_NV_vertex_program */
601 GLboolean PixelTexture;
602 GLboolean PointSmooth;
603 GLboolean PolygonOffsetPoint;
604 GLboolean PolygonOffsetLine;
605 GLboolean PolygonOffsetFill;
606 GLboolean PolygonSmooth;
607 GLboolean PolygonStipple;
608 GLboolean RescaleNormals;
611 GLboolean StencilTwoSide; /* GL_EXT_stencil_two_side */
612 GLboolean MultisampleEnabled; /* GL_ARB_multisample */
613 GLboolean SampleAlphaToCoverage; /* GL_ARB_multisample */
614 GLboolean SampleAlphaToOne; /* GL_ARB_multisample */
615 GLboolean SampleCoverage; /* GL_ARB_multisample */
616 GLboolean SampleCoverageInvert; /* GL_ARB_multisample */
617 GLboolean RasterPositionUnclipped; /* GL_IBM_rasterpos_clip */
618 GLuint Texture[MAX_TEXTURE_IMAGE_UNITS];
619 GLuint TexGen[MAX_TEXTURE_COORD_UNITS];
620 /* SGI_texture_color_table */
621 GLboolean TextureColorTable[MAX_TEXTURE_IMAGE_UNITS];
622 /* GL_NV_vertex_program */
623 GLboolean VertexProgram;
624 GLboolean VertexProgramPointSize;
625 GLboolean VertexProgramTwoSide;
626 /* GL_ARB_point_sprite / GL_NV_point_sprite */
627 GLboolean PointSprite;
628 GLboolean FragmentShaderATI;
633 * Evaluator attribute group (GL_EVAL_BIT).
635 struct gl_eval_attrib
641 GLboolean Map1Color4;
643 GLboolean Map1Normal;
644 GLboolean Map1TextureCoord1;
645 GLboolean Map1TextureCoord2;
646 GLboolean Map1TextureCoord3;
647 GLboolean Map1TextureCoord4;
648 GLboolean Map1Vertex3;
649 GLboolean Map1Vertex4;
650 GLboolean Map1Attrib[16]; /* GL_NV_vertex_program */
651 GLboolean Map2Color4;
653 GLboolean Map2Normal;
654 GLboolean Map2TextureCoord1;
655 GLboolean Map2TextureCoord2;
656 GLboolean Map2TextureCoord3;
657 GLboolean Map2TextureCoord4;
658 GLboolean Map2Vertex3;
659 GLboolean Map2Vertex4;
660 GLboolean Map2Attrib[16]; /* GL_NV_vertex_program */
661 GLboolean AutoNormal;
665 * \name Map Grid endpoints and divisions and calculated du values
669 GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
670 GLint MapGrid2un, MapGrid2vn;
671 GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
672 GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
678 * Fog attribute group (GL_FOG_BIT).
682 GLboolean Enabled; /**< Fog enabled flag */
683 GLfloat Color[4]; /**< Fog color */
684 GLfloat Density; /**< Density >= 0.0 */
685 GLfloat Start; /**< Start distance in eye coords */
686 GLfloat End; /**< End distance in eye coords */
687 GLfloat Index; /**< Fog index */
688 GLenum Mode; /**< Fog mode */
689 GLboolean ColorSumEnabled;
690 GLenum FogCoordinateSource; /**< GL_EXT_fog_coord */
695 * Hint attribute group (GL_HINT_BIT).
697 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
699 struct gl_hint_attrib
701 GLenum PerspectiveCorrection;
704 GLenum PolygonSmooth;
706 GLenum ClipVolumeClipping; /**< GL_EXT_clip_volume_hint */
707 GLenum TextureCompression; /**< GL_ARB_texture_compression */
708 GLenum GenerateMipmap; /**< GL_SGIS_generate_mipmap */
713 * Histogram attributes.
715 struct gl_histogram_attrib
717 GLuint Width; /**< number of table entries */
718 GLint Format; /**< GL_ALPHA, GL_RGB, etc */
719 GLuint Count[HISTOGRAM_TABLE_SIZE][4]; /**< the histogram */
720 GLboolean Sink; /**< terminate image transfer? */
721 GLubyte RedSize; /**< Bits per counter */
725 GLubyte LuminanceSize;
730 * Color Min/max state.
732 struct gl_minmax_attrib
736 GLfloat Min[4], Max[4]; /**< RGBA */
741 * Image convolution state.
743 struct gl_convolution_attrib
746 GLenum InternalFormat;
749 GLfloat Filter[MAX_CONVOLUTION_WIDTH * MAX_CONVOLUTION_HEIGHT * 4];
757 #define LIGHT_SPOT 0x1
758 #define LIGHT_LOCAL_VIEWER 0x2
759 #define LIGHT_POSITIONAL 0x4
760 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
765 * Lighting attribute group (GL_LIGHT_BIT).
767 struct gl_light_attrib
769 struct gl_light Light[MAX_LIGHTS]; /**< Array of light sources */
770 struct gl_lightmodel Model; /**< Lighting model */
773 * Must flush FLUSH_VERTICES before referencing:
776 struct gl_material Material; /**< Includes front & back values */
779 GLboolean Enabled; /**< Lighting enabled flag */
780 GLenum ShadeModel; /**< GL_FLAT or GL_SMOOTH */
781 GLenum ColorMaterialFace; /**< GL_FRONT, BACK or FRONT_AND_BACK */
782 GLenum ColorMaterialMode; /**< GL_AMBIENT, GL_DIFFUSE, etc */
783 GLuint ColorMaterialBitmask; /**< bitmask formed from Face and Mode */
784 GLboolean ColorMaterialEnabled;
786 struct gl_light EnabledList; /**< List sentinel */
789 * Derived state for optimizations:
792 GLboolean _NeedEyeCoords;
793 GLboolean _NeedVertices; /**< Use fast shader? */
794 GLuint _Flags; /**< LIGHT_* flags, see above */
795 GLfloat _BaseColor[2][3];
801 * Line attribute group (GL_LINE_BIT).
803 struct gl_line_attrib
805 GLboolean SmoothFlag; /**< GL_LINE_SMOOTH enabled? */
806 GLboolean StippleFlag; /**< GL_LINE_STIPPLE enabled? */
807 GLushort StipplePattern; /**< Stipple pattern */
808 GLint StippleFactor; /**< Stipple repeat factor */
809 GLfloat Width; /**< Line width */
810 GLfloat _Width; /**< Clamped Line width */
815 * Display list attribute group (GL_LIST_BIT).
817 struct gl_list_attrib
824 * Used by device drivers to hook new commands into display lists.
826 struct gl_list_instruction
829 void (*Execute)( GLcontext *ctx, void *data );
830 void (*Destroy)( GLcontext *ctx, void *data );
831 void (*Print)( GLcontext *ctx, void *data );
834 #define MAX_DLIST_EXT_OPCODES 16
837 * Used by device drivers to hook new commands into display lists.
839 struct gl_list_extensions
841 struct gl_list_instruction Opcode[MAX_DLIST_EXT_OPCODES];
847 * Multisample attribute group (GL_MULTISAMPLE_BIT).
849 struct gl_multisample_attrib
852 GLboolean SampleAlphaToCoverage;
853 GLboolean SampleAlphaToOne;
854 GLboolean SampleCoverage;
855 GLfloat SampleCoverageValue;
856 GLboolean SampleCoverageInvert;
861 * Pixel attribute group (GL_PIXEL_MODE_BIT).
863 struct gl_pixel_attrib
865 GLenum ReadBuffer; /**< source buffer for glReadPixels()/glCopyPixels() */
866 GLubyte _ReadSrcMask; /**< Not really a mask, but like _DrawDestMask
868 * May be: FRONT_LEFT_BIT, BACK_LEFT_BIT,
869 * FRONT_RIGHT_BIT or BACK_RIGHT_BIT. */
870 GLfloat RedBias, RedScale;
871 GLfloat GreenBias, GreenScale;
872 GLfloat BlueBias, BlueScale;
873 GLfloat AlphaBias, AlphaScale;
874 GLfloat DepthBias, DepthScale;
875 GLint IndexShift, IndexOffset;
876 GLboolean MapColorFlag;
877 GLboolean MapStencilFlag;
878 GLfloat ZoomX, ZoomY;
879 /* XXX move these out of gl_pixel_attrib */
880 GLint MapStoSsize; /**< Size of each pixel map */
890 GLint MapStoS[MAX_PIXEL_MAP_TABLE]; /**< Pixel map tables */
891 GLint MapItoI[MAX_PIXEL_MAP_TABLE];
892 GLfloat MapItoR[MAX_PIXEL_MAP_TABLE];
893 GLfloat MapItoG[MAX_PIXEL_MAP_TABLE];
894 GLfloat MapItoB[MAX_PIXEL_MAP_TABLE];
895 GLfloat MapItoA[MAX_PIXEL_MAP_TABLE];
896 GLubyte MapItoR8[MAX_PIXEL_MAP_TABLE]; /**< converted to 8-bit color */
897 GLubyte MapItoG8[MAX_PIXEL_MAP_TABLE];
898 GLubyte MapItoB8[MAX_PIXEL_MAP_TABLE];
899 GLubyte MapItoA8[MAX_PIXEL_MAP_TABLE];
900 GLfloat MapRtoR[MAX_PIXEL_MAP_TABLE];
901 GLfloat MapGtoG[MAX_PIXEL_MAP_TABLE];
902 GLfloat MapBtoB[MAX_PIXEL_MAP_TABLE];
903 GLfloat MapAtoA[MAX_PIXEL_MAP_TABLE];
904 /** GL_EXT_histogram */
905 GLboolean HistogramEnabled;
906 GLboolean MinMaxEnabled;
907 /** GL_SGIS_pixel_texture */
908 GLboolean PixelTextureEnabled;
909 GLenum FragmentRgbSource;
910 GLenum FragmentAlphaSource;
911 /** GL_SGI_color_matrix */
912 GLfloat PostColorMatrixScale[4]; /**< RGBA */
913 GLfloat PostColorMatrixBias[4]; /**< RGBA */
914 /** GL_SGI_color_table */
915 GLfloat ColorTableScale[4];
916 GLfloat ColorTableBias[4];
917 GLboolean ColorTableEnabled;
918 GLfloat PCCTscale[4];
920 GLboolean PostConvolutionColorTableEnabled;
921 GLfloat PCMCTscale[4];
922 GLfloat PCMCTbias[4];
923 GLboolean PostColorMatrixColorTableEnabled;
924 /** GL_SGI_texture_color_table */
925 GLfloat TextureColorTableScale[4];
926 GLfloat TextureColorTableBias[4];
928 GLboolean Convolution1DEnabled;
929 GLboolean Convolution2DEnabled;
930 GLboolean Separable2DEnabled;
931 GLfloat ConvolutionBorderColor[3][4];
932 GLenum ConvolutionBorderMode[3];
933 GLfloat ConvolutionFilterScale[3][4];
934 GLfloat ConvolutionFilterBias[3][4];
935 GLfloat PostConvolutionScale[4]; /**< RGBA */
936 GLfloat PostConvolutionBias[4]; /**< RGBA */
941 * Point attribute group (GL_POINT_BIT).
943 struct gl_point_attrib
945 GLboolean SmoothFlag; /**< True if GL_POINT_SMOOTH is enabled */
946 GLfloat Size; /**< User-specified point size */
947 GLfloat _Size; /**< Size clamped to Const.Min/MaxPointSize */
948 GLfloat Params[3]; /**< GL_EXT_point_parameters */
949 GLfloat MinSize, MaxSize; /**< GL_EXT_point_parameters */
950 GLfloat Threshold; /**< GL_EXT_point_parameters */
951 GLboolean _Attenuated; /**< True if Params != [1, 0, 0] */
952 GLboolean PointSprite; /**< GL_NV_point_sprite / GL_NV_point_sprite */
953 GLboolean CoordReplace[MAX_TEXTURE_UNITS]; /**< GL_NV_point_sprite / GL_NV_point_sprite */
954 GLenum SpriteRMode; /**< GL_NV_point_sprite (only!) */
955 GLenum SpriteOrigin; /**< GL_ARB_point_sprite */
960 * Polygon attribute group (GL_POLYGON_BIT).
962 struct gl_polygon_attrib
964 GLenum FrontFace; /**< Either GL_CW or GL_CCW */
965 GLenum FrontMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
966 GLenum BackMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
967 GLboolean _FrontBit; /**< 0=GL_CCW, 1=GL_CW */
968 GLboolean CullFlag; /**< Culling on/off flag */
969 GLboolean SmoothFlag; /**< True if GL_POLYGON_SMOOTH is enabled */
970 GLboolean StippleFlag; /**< True if GL_POLYGON_STIPPLE is enabled */
971 GLenum CullFaceMode; /**< Culling mode GL_FRONT or GL_BACK */
972 GLfloat OffsetFactor; /**< Polygon offset factor, from user */
973 GLfloat OffsetUnits; /**< Polygon offset units, from user */
974 GLboolean OffsetPoint; /**< Offset in GL_POINT mode */
975 GLboolean OffsetLine; /**< Offset in GL_LINE mode */
976 GLboolean OffsetFill; /**< Offset in GL_FILL mode */
981 * Scissor attributes (GL_SCISSOR_BIT).
983 struct gl_scissor_attrib
985 GLboolean Enabled; /**< Scissor test enabled? */
986 GLint X, Y; /**< Lower left corner of box */
987 GLsizei Width, Height; /**< Size of box */
992 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
994 struct gl_stencil_attrib
996 GLboolean Enabled; /**< Enabled flag */
997 GLboolean TestTwoSide; /**< GL_EXT_stencil_two_side */
998 GLubyte ActiveFace; /**< GL_EXT_stencil_two_side (0 or 1) */
999 GLenum Function[2]; /**< Stencil function */
1000 GLenum FailFunc[2]; /**< Fail function */
1001 GLenum ZPassFunc[2]; /**< Depth buffer pass function */
1002 GLenum ZFailFunc[2]; /**< Depth buffer fail function */
1003 GLstencil Ref[2]; /**< Reference value */
1004 GLstencil ValueMask[2]; /**< Value mask */
1005 GLstencil WriteMask[2]; /**< Write mask */
1006 GLstencil Clear; /**< Clear value */
1010 #define NUM_TEXTURE_TARGETS 5 /* 1D, 2D, 3D, CUBE and RECT */
1013 * An index for each type of texture object
1016 #define TEXTURE_1D_INDEX 0
1017 #define TEXTURE_2D_INDEX 1
1018 #define TEXTURE_3D_INDEX 2
1019 #define TEXTURE_CUBE_INDEX 3
1020 #define TEXTURE_RECT_INDEX 4
1024 * Bit flags for each type of texture object
1025 * Used for Texture.Unit[]._ReallyEnabled flags.
1028 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1029 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1030 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1031 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1032 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1037 * TexGenEnabled flags.
1048 * Bit flag versions of the corresponding GL_ constants.
1051 #define TEXGEN_SPHERE_MAP 0x1
1052 #define TEXGEN_OBJ_LINEAR 0x2
1053 #define TEXGEN_EYE_LINEAR 0x4
1054 #define TEXGEN_REFLECTION_MAP_NV 0x8
1055 #define TEXGEN_NORMAL_MAP_NV 0x10
1057 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1058 TEXGEN_REFLECTION_MAP_NV | \
1059 TEXGEN_NORMAL_MAP_NV)
1060 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1061 TEXGEN_REFLECTION_MAP_NV | \
1062 TEXGEN_NORMAL_MAP_NV | \
1067 /* A selection of state flags to make driver and module's lives easier. */
1068 #define ENABLE_TEXGEN0 0x1
1069 #define ENABLE_TEXGEN1 0x2
1070 #define ENABLE_TEXGEN2 0x4
1071 #define ENABLE_TEXGEN3 0x8
1072 #define ENABLE_TEXGEN4 0x10
1073 #define ENABLE_TEXGEN5 0x20
1074 #define ENABLE_TEXGEN6 0x40
1075 #define ENABLE_TEXGEN7 0x80
1077 #define ENABLE_TEXMAT0 0x1 /* Ie. not the identity matrix */
1078 #define ENABLE_TEXMAT1 0x2
1079 #define ENABLE_TEXMAT2 0x4
1080 #define ENABLE_TEXMAT3 0x8
1081 #define ENABLE_TEXMAT4 0x10
1082 #define ENABLE_TEXMAT5 0x20
1083 #define ENABLE_TEXMAT6 0x40
1084 #define ENABLE_TEXMAT7 0x80
1086 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
1087 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
1091 * Texel fetch function prototype. We use texel fetch functions to
1092 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1093 * texture images. These functions help to isolate us from the gritty
1094 * details of all the various texture image encodings.
1096 * \param texImage texture image.
1097 * \param col texel column.
1098 * \param row texel row.
1099 * \param img texel image level/layer.
1100 * \param texelOut output texel (up to 4 GLchans)
1102 typedef void (*FetchTexelFuncC)( const struct gl_texture_image *texImage,
1103 GLint col, GLint row, GLint img,
1107 * As above, but returns floats.
1108 * Used for depth component images and for upcoming signed/float
1111 typedef void (*FetchTexelFuncF)( const struct gl_texture_image *texImage,
1112 GLint col, GLint row, GLint img,
1113 GLfloat *texelOut );
1117 * TexImage store function. This is called by the glTex[Sub]Image
1118 * functions and is responsible for converting the user-specified texture
1119 * image into a specific (hardware) image format.
1121 typedef GLboolean (*StoreTexImageFunc)(GLcontext *ctx, GLuint dims,
1122 GLenum baseInternalFormat,
1123 const struct gl_texture_format *dstFormat,
1125 GLint dstXoffset, GLint dstYoffset, GLint dstZoffset,
1126 GLint dstRowStride, GLint dstImageStride,
1127 GLint srcWidth, GLint srcHeight, GLint srcDepth,
1128 GLenum srcFormat, GLenum srcType,
1129 const GLvoid *srcAddr,
1130 const struct gl_pixelstore_attrib *srcPacking);
1135 * Texture format record
1137 struct gl_texture_format
1139 GLint MesaFormat; /**< One of the MESA_FORMAT_* values */
1141 GLenum BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1142 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1143 * GL_INTENSITY, GL_COLOR_INDEX or
1144 * GL_DEPTH_COMPONENT.
1146 GLenum DataType; /**< GL_FLOAT or GL_UNSIGNED_NORMALIZED_ARB */
1147 GLubyte RedBits; /**< Bits per texel component */
1148 GLubyte GreenBits; /**< These are just rough approximations for */
1149 GLubyte BlueBits; /**< compressed texture formats. */
1151 GLubyte LuminanceBits;
1152 GLubyte IntensityBits;
1156 GLuint TexelBytes; /**< Bytes per texel, 0 if compressed format */
1158 StoreTexImageFunc StoreImage;
1161 * \name Texel fetch function pointers
1164 FetchTexelFuncC FetchTexel1D;
1165 FetchTexelFuncC FetchTexel2D;
1166 FetchTexelFuncC FetchTexel3D;
1167 FetchTexelFuncF FetchTexel1Df;
1168 FetchTexelFuncF FetchTexel2Df;
1169 FetchTexelFuncF FetchTexel3Df;
1175 * Texture image state. Describes the dimensions of a texture image,
1176 * the texel format and pointers to Texel Fetch functions.
1178 struct gl_texture_image
1180 GLenum Format; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1181 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1182 * GL_INTENSITY, GL_COLOR_INDEX or
1183 * GL_DEPTH_COMPONENT only.
1184 * Used for choosing TexEnv arithmetic.
1186 GLint IntFormat; /**< Internal format as given by the user */
1187 GLuint Border; /**< 0 or 1 */
1188 GLuint Width; /**< = 2^WidthLog2 + 2*Border */
1189 GLuint Height; /**< = 2^HeightLog2 + 2*Border */
1190 GLuint Depth; /**< = 2^DepthLog2 + 2*Border */
1191 GLuint RowStride; /**< == Width unless IsClientData and padded */
1192 GLuint Width2; /**< = Width - 2*Border */
1193 GLuint Height2; /**< = Height - 2*Border */
1194 GLuint Depth2; /**< = Depth - 2*Border */
1195 GLuint WidthLog2; /**< = log2(Width2) */
1196 GLuint HeightLog2; /**< = log2(Height2) */
1197 GLuint DepthLog2; /**< = log2(Depth2) */
1198 GLuint MaxLog2; /**< = MAX(WidthLog2, HeightLog2) */
1199 GLfloat WidthScale; /**< used for mipmap LOD computation */
1200 GLfloat HeightScale; /**< used for mipmap LOD computation */
1201 GLfloat DepthScale; /**< used for mipmap LOD computation */
1202 GLvoid *Data; /**< Image data, accessed via FetchTexel() */
1203 GLboolean IsClientData; /**< Data owned by client? */
1204 GLboolean _IsPowerOfTwo; /**< Are all dimensions powers of two? */
1206 const struct gl_texture_format *TexFormat;
1208 struct gl_texture_object *TexObject; /**< Pointer back to parent object */
1210 FetchTexelFuncC FetchTexelc; /**< GLchan texel fetch function pointer */
1211 FetchTexelFuncF FetchTexelf; /**< Float texel fetch function pointer */
1213 GLboolean IsCompressed; /**< GL_ARB_texture_compression */
1214 GLuint CompressedSize; /**< GL_ARB_texture_compression */
1217 * \name For device driver:
1220 void *DriverData; /**< Arbitrary device driver data */
1226 * Indexes for cube map faces.
1229 #define FACE_POS_X 0
1230 #define FACE_NEG_X 1
1231 #define FACE_POS_Y 2
1232 #define FACE_NEG_Y 3
1233 #define FACE_POS_Z 4
1234 #define FACE_NEG_Z 5
1240 * Texture object state. Contains the array of mipmap images, border color,
1241 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1244 struct gl_texture_object
1246 _glthread_Mutex Mutex; /**< for thread safety */
1247 GLint RefCount; /**< reference count */
1248 GLuint Name; /**< the user-visible texture object ID */
1249 GLenum Target; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1250 GLfloat Priority; /**< in [0,1] */
1251 GLfloat BorderColor[4]; /**< unclamped */
1252 GLchan _BorderChan[4]; /**< clamped, as GLchan */
1253 GLenum WrapS; /**< S-axis texture image wrap mode */
1254 GLenum WrapT; /**< T-axis texture image wrap mode */
1255 GLenum WrapR; /**< R-axis texture image wrap mode */
1256 GLenum MinFilter; /**< minification filter */
1257 GLenum MagFilter; /**< magnification filter */
1258 GLfloat MinLod; /**< min lambda, OpenGL 1.2 */
1259 GLfloat MaxLod; /**< max lambda, OpenGL 1.2 */
1260 GLfloat LodBias; /**< OpenGL 1.4 */
1261 GLint BaseLevel; /**< min mipmap level, OpenGL 1.2 */
1262 GLint MaxLevel; /**< max mipmap level, OpenGL 1.2 */
1263 GLfloat MaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
1264 GLboolean CompareFlag; /**< GL_SGIX_shadow */
1265 GLenum CompareOperator; /**< GL_SGIX_shadow */
1266 GLfloat ShadowAmbient; /**< GL_ARB_shadow_ambient */
1267 GLenum CompareMode; /**< GL_ARB_shadow */
1268 GLenum CompareFunc; /**< GL_ARB_shadow */
1269 GLenum DepthMode; /**< GL_ARB_depth_texture */
1270 GLint _MaxLevel; /**< actual max mipmap level (q in the spec) */
1271 GLfloat _MaxLambda; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1272 GLboolean GenerateMipmap; /**< GL_SGIS_generate_mipmap */
1273 GLboolean _IsPowerOfTwo; /**< Are all image dimensions powers of two? */
1274 GLboolean Complete; /**< Is texture object complete? */
1276 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1277 struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
1279 /** GL_EXT_paletted_texture */
1280 struct gl_color_table Palette;
1284 * \name For device driver.
1285 * Note: instead of attaching driver data to this pointer, it's preferable
1286 * to instead use this struct as a base class for your own texture object
1287 * class. Driver->NewTextureObject() can be used to implement the
1290 void *DriverData; /**< Arbitrary device driver data */
1295 * Texture combine environment state.
1298 * If GL_NV_texture_env_combine4 is ever supported, the arrays in this
1299 * structure will need to be expanded for 4 elements.
1301 struct gl_tex_env_combine_state
1303 GLenum ModeRGB; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1304 GLenum ModeA; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1305 GLenum SourceRGB[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1306 GLenum SourceA[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1307 GLenum OperandRGB[3]; /**< SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
1308 GLenum OperandA[3]; /**< SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
1309 GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
1310 GLuint ScaleShiftA; /**< 0, 1 or 2 */
1311 GLuint _NumArgsRGB; /**< Number of inputs used for the combine mode. */
1312 GLuint _NumArgsA; /**< Number of inputs used for the combine mode. */
1317 * Texture unit state. Contains enable flags, texture environment/function/
1318 * combiners, texgen state, pointers to current texture objects and
1319 * post-filter color tables.
1321 struct gl_texture_unit
1323 GLuint Enabled; /**< bitmask of TEXTURE_*_BIT flags */
1324 GLuint _ReallyEnabled; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1326 GLenum EnvMode; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1327 GLfloat EnvColor[4];
1328 GLuint TexGenEnabled; /**< Bitwise-OR of [STRQ]_BIT values */
1329 /** \name Tex coord generation mode
1330 * Either GL_OBJECT_LINEAR, GL_EYE_LINEAR or GL_SPHERE_MAP. */
1341 GLuint _GenFlags; /**< bitwise or of GenBit[STRQ] */
1342 GLfloat ObjectPlaneS[4];
1343 GLfloat ObjectPlaneT[4];
1344 GLfloat ObjectPlaneR[4];
1345 GLfloat ObjectPlaneQ[4];
1346 GLfloat EyePlaneS[4];
1347 GLfloat EyePlaneT[4];
1348 GLfloat EyePlaneR[4];
1349 GLfloat EyePlaneQ[4];
1350 GLfloat LodBias; /**< for biasing mipmap levels */
1353 * \name GL_EXT_texture_env_combine
1355 struct gl_tex_env_combine_state Combine;
1358 * Derived state based on \c EnvMode and the \c BaseFormat of the
1359 * currently enabled texture.
1361 struct gl_tex_env_combine_state _EnvMode;
1364 * Currently enabled combiner state. This will point to either
1365 * \c Combine or \c _EnvMode.
1367 struct gl_tex_env_combine_state *_CurrentCombine;
1369 struct gl_texture_object *Current1D;
1370 struct gl_texture_object *Current2D;
1371 struct gl_texture_object *Current3D;
1372 struct gl_texture_object *CurrentCubeMap; /**< GL_ARB_texture_cube_map */
1373 struct gl_texture_object *CurrentRect; /**< GL_NV_texture_rectangle */
1375 struct gl_texture_object *_Current; /**< Points to really enabled tex obj */
1377 struct gl_texture_object Saved1D; /**< only used by glPush/PopAttrib */
1378 struct gl_texture_object Saved2D;
1379 struct gl_texture_object Saved3D;
1380 struct gl_texture_object SavedCubeMap;
1381 struct gl_texture_object SavedRect;
1383 /* GL_SGI_texture_color_table */
1384 struct gl_color_table ColorTable;
1385 struct gl_color_table ProxyColorTable;
1386 GLboolean ColorTableEnabled;
1391 * Texture attribute group (GL_TEXTURE_BIT).
1393 struct gl_texture_attrib
1399 GLuint CurrentUnit; /**< Active texture unit */
1400 GLuint _EnabledUnits; /**< one bit set for each really-enabled unit */
1401 GLuint _EnabledCoordUnits; /**< one bit per enabled coordinate unit */
1402 GLuint _GenFlags; /**< for texgen */
1403 GLuint _TexGenEnabled;
1404 GLuint _TexMatEnabled;
1407 struct gl_texture_unit Unit[MAX_TEXTURE_UNITS];
1409 struct gl_texture_object *Proxy1D;
1410 struct gl_texture_object *Proxy2D;
1411 struct gl_texture_object *Proxy3D;
1412 struct gl_texture_object *ProxyCubeMap;
1413 struct gl_texture_object *ProxyRect;
1415 /** GL_EXT_shared_texture_palette */
1416 GLboolean SharedPalette;
1417 struct gl_color_table Palette;
1422 * Transformation attribute group (GL_TRANSFORM_BIT).
1424 struct gl_transform_attrib
1426 GLenum MatrixMode; /**< Matrix mode */
1427 GLfloat EyeUserPlane[MAX_CLIP_PLANES][4]; /**< User clip planes */
1428 GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4]; /**< derived */
1429 GLuint ClipPlanesEnabled; /**< on/off bitmask */
1430 GLboolean Normalize; /**< Normalize all normals? */
1431 GLboolean RescaleNormals; /**< GL_EXT_rescale_normal */
1432 GLboolean RasterPositionUnclipped; /**< GL_IBM_rasterpos_clip */
1434 GLboolean CullVertexFlag; /**< True if GL_CULL_VERTEX_EXT is enabled */
1435 GLfloat CullEyePos[4];
1436 GLfloat CullObjPos[4];
1441 * Viewport attribute group (GL_VIEWPORT_BIT).
1443 struct gl_viewport_attrib
1445 GLint X, Y; /**< position */
1446 GLsizei Width, Height; /**< size */
1447 GLfloat Near, Far; /**< Depth buffer range */
1448 GLmatrix _WindowMap; /**< Mapping transformation as a matrix. */
1453 * Node for the attribute stack.
1455 struct gl_attrib_node
1459 struct gl_attrib_node *next;
1464 * GL_ARB_vertex/pixel_buffer_object buffer object
1466 struct gl_buffer_object
1472 GLvoid *Pointer; /**< Only valid while buffer is mapped */
1473 GLuint Size; /**< Size of storage in bytes */
1474 GLubyte *Data; /**< Location of storage either in RAM or VRAM. */
1475 GLboolean OnCard; /**< Is buffer in VRAM? (hardware drivers) */
1481 * Client pixel packing/unpacking attributes
1483 struct gl_pixelstore_attrib
1489 GLint ImageHeight; /**< for GL_EXT_texture3D */
1490 GLint SkipImages; /**< for GL_EXT_texture3D */
1491 GLboolean SwapBytes;
1493 GLboolean ClientStorage; /**< GL_APPLE_client_storage */
1494 GLboolean Invert; /**< GL_MESA_pack_invert */
1495 struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
1499 #define CA_CLIENT_DATA 0x1 /**< Data not allocated by mesa */
1503 * Client vertex array attributes
1505 struct gl_client_array
1507 GLint Size; /**< components per element (1,2,3,4) */
1508 GLenum Type; /**< datatype: GL_FLOAT, GL_INT, etc */
1509 GLsizei Stride; /**< user-specified stride */
1510 GLsizei StrideB; /**< actual stride in bytes */
1511 const GLubyte *Ptr; /**< Points to array data */
1512 GLuint Enabled; /**< one of the _NEW_ARRAY_ bits */
1513 GLboolean Normalized; /**< GL_ARB_vertex_program */
1515 /**< GL_ARB_vertex_buffer_object */
1516 struct gl_buffer_object *BufferObj;
1524 * Vertex array state
1526 struct gl_array_attrib
1528 struct gl_client_array Vertex; /**< client data descriptors */
1529 struct gl_client_array Normal;
1530 struct gl_client_array Color;
1531 struct gl_client_array SecondaryColor;
1532 struct gl_client_array FogCoord;
1533 struct gl_client_array Index;
1534 struct gl_client_array TexCoord[MAX_TEXTURE_COORD_UNITS];
1535 struct gl_client_array EdgeFlag;
1537 struct gl_client_array VertexAttrib[VERT_ATTRIB_MAX]; /**< GL_NV_vertex_program */
1539 GLint ActiveTexture; /**< Client Active Texture */
1540 GLuint LockFirst; /**< GL_EXT_compiled_vertex_array */
1541 GLuint LockCount; /**< GL_EXT_compiled_vertex_array */
1543 GLuint _Enabled; /**< _NEW_ARRAY_* - bit set if array enabled */
1544 GLuint NewState; /**< _NEW_ARRAY_* */
1546 #if FEATURE_ARB_vertex_buffer_object
1547 struct gl_buffer_object *NullBufferObj;
1548 struct gl_buffer_object *ArrayBufferObj;
1549 struct gl_buffer_object *ElementArrayBufferObj;
1551 GLuint _MaxElement; /* Min of all enabled array's maxes */
1556 * Feedback buffer state
1561 GLuint _Mask; /* FB_* bits */
1569 * Selection buffer state
1573 GLuint *Buffer; /**< selection buffer */
1574 GLuint BufferSize; /**< size of the selection buffer */
1575 GLuint BufferCount; /**< number of values in the selection buffer */
1576 GLuint Hits; /**< number of records in the selection buffer */
1577 GLuint NameStackDepth; /**< name stack depth */
1578 GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
1579 GLboolean HitFlag; /**< hit flag */
1580 GLfloat HitMinZ; /**< minimum hit depth */
1581 GLfloat HitMaxZ; /**< maximum hit depth */
1586 * 1-D Evaluator control points
1590 GLuint Order; /**< Number of control points */
1591 GLfloat u1, u2, du; /**< u1, u2, 1.0/(u2-u1) */
1592 GLfloat *Points; /**< Points to contiguous control points */
1597 * 2-D Evaluator control points
1601 GLuint Uorder; /**< Number of control points in U dimension */
1602 GLuint Vorder; /**< Number of control points in V dimension */
1605 GLfloat *Points; /**< Points to contiguous control points */
1610 * All evaluator control point state
1612 struct gl_evaluators
1618 struct gl_1d_map Map1Vertex3;
1619 struct gl_1d_map Map1Vertex4;
1620 struct gl_1d_map Map1Index;
1621 struct gl_1d_map Map1Color4;
1622 struct gl_1d_map Map1Normal;
1623 struct gl_1d_map Map1Texture1;
1624 struct gl_1d_map Map1Texture2;
1625 struct gl_1d_map Map1Texture3;
1626 struct gl_1d_map Map1Texture4;
1627 struct gl_1d_map Map1Attrib[16]; /**< GL_NV_vertex_program */
1634 struct gl_2d_map Map2Vertex3;
1635 struct gl_2d_map Map2Vertex4;
1636 struct gl_2d_map Map2Index;
1637 struct gl_2d_map Map2Color4;
1638 struct gl_2d_map Map2Normal;
1639 struct gl_2d_map Map2Texture1;
1640 struct gl_2d_map Map2Texture2;
1641 struct gl_2d_map Map2Texture3;
1642 struct gl_2d_map Map2Texture4;
1643 struct gl_2d_map Map2Attrib[16]; /**< GL_NV_vertex_program */
1649 * NV_fragment_program runtime state
1653 GLfloat Temporaries[MAX_NV_FRAGMENT_PROGRAM_TEMPS][4];
1654 GLfloat Inputs[MAX_NV_FRAGMENT_PROGRAM_INPUTS][4];
1655 GLfloat Outputs[MAX_NV_FRAGMENT_PROGRAM_OUTPUTS][4];
1656 GLuint CondCodes[4];
1660 * ATI_fragment_shader runtime state
1662 #define ATI_FS_INPUT_PRIMARY 0
1663 #define ATI_FS_INPUT_SECONDARY 1
1665 /* 6 register sets - 2 inputs (primary, secondary) */
1666 struct atifs_machine
1668 GLfloat Registers[6][4];
1669 GLfloat PrevPassRegisters[6][4];
1670 GLfloat Inputs[2][4];
1676 * Names of the various vertex/fragment register files
1680 PROGRAM_TEMPORARY = 10,
1683 PROGRAM_LOCAL_PARAM,
1685 PROGRAM_NAMED_PARAM,
1692 /** Vertex and fragment instructions */
1693 struct vp_instruction;
1694 struct fp_instruction;
1695 struct atifs_instruction;
1696 struct program_parameter_list;
1700 * Base class for any kind of program object
1705 GLubyte *String; /**< Null-terminated program text */
1708 GLenum Format; /**< String encoding format */
1710 GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4];
1711 GLuint NumInstructions; /* GL_ARB_vertex/fragment_program */
1712 GLuint NumTemporaries;
1713 GLuint NumParameters;
1714 GLuint NumAttributes;
1715 GLuint NumAddressRegs;
1719 /** Vertex program object */
1720 struct vertex_program
1722 struct program Base; /* base class */
1723 struct vp_instruction *Instructions; /* Compiled instructions */
1724 GLboolean IsNVProgram; /* GL_NV_vertex_program ? */
1725 GLboolean IsPositionInvariant; /* GL_NV_vertex_program1_1 */
1726 GLuint InputsRead; /* Bitmask of which input regs are read */
1727 GLuint OutputsWritten; /* Bitmask of which output regs are written to */
1728 struct program_parameter_list *Parameters; /**< array [NumParameters] */
1732 /** Fragment program object */
1733 struct fragment_program
1735 struct program Base; /**< base class */
1736 struct fp_instruction *Instructions; /**< Compiled instructions */
1737 GLuint InputsRead; /**< Bitmask of which input regs are read */
1738 GLuint OutputsWritten; /**< Bitmask of which output regs are written to */
1739 GLuint TexturesUsed[MAX_TEXTURE_IMAGE_UNITS]; /**< TEXTURE_x_INDEX bitmask */
1740 GLuint NumAluInstructions; /**< GL_ARB_fragment_program */
1741 GLuint NumTexInstructions;
1742 GLuint NumTexIndirections;
1744 struct program_parameter_list *Parameters; /**< array [NumParameters] */
1747 char c_str[4096]; /* experimental... */
1752 struct ati_fragment_shader
1754 struct program Base;
1755 struct atifs_instruction *Instructions;
1756 GLfloat Constants[8][4];
1762 * State common to vertex and fragment programs.
1764 struct gl_program_state
1766 GLint ErrorPos; /* GL_PROGRAM_ERROR_POSITION_NV */
1767 const char *ErrorString; /* GL_PROGRAM_ERROR_STRING_NV */
1772 * State vars for GL_ARB/GL_NV_vertex_program
1774 struct gl_vertex_program_state
1776 GLboolean Enabled; /**< GL_VERTEX_PROGRAM_NV */
1777 GLboolean _Enabled; /**< Really enabled? */
1778 GLboolean PointSizeEnabled; /**< GL_VERTEX_PROGRAM_POINT_SIZE_NV */
1779 GLboolean TwoSideEnabled; /**< GL_VERTEX_PROGRAM_TWO_SIDE_NV */
1780 struct vertex_program *Current; /**< ptr to currently bound program */
1782 GLenum TrackMatrix[MAX_NV_VERTEX_PROGRAM_PARAMS / 4];
1783 GLenum TrackMatrixTransform[MAX_NV_VERTEX_PROGRAM_PARAMS / 4];
1785 GLfloat Parameters[MAX_NV_VERTEX_PROGRAM_PARAMS][4]; /* Env params */
1786 /* Only used during program execution (may be moved someday): */
1787 GLfloat Temporaries[MAX_NV_VERTEX_PROGRAM_TEMPS][4];
1788 GLfloat Inputs[MAX_NV_VERTEX_PROGRAM_INPUTS][4];
1789 GLuint InputsSize[MAX_NV_VERTEX_PROGRAM_INPUTS];
1790 GLfloat Outputs[MAX_NV_VERTEX_PROGRAM_OUTPUTS][4];
1791 GLint AddressReg[4];
1793 #if FEATURE_MESA_program_debug
1794 GLprogramcallbackMESA Callback;
1795 GLvoid *CallbackData;
1796 GLboolean CallbackEnabled;
1797 GLuint CurrentPosition;
1803 * State for GL_ARB/NV_fragment_program
1805 struct gl_fragment_program_state
1807 GLboolean Enabled; /* GL_VERTEX_PROGRAM_NV */
1808 GLboolean _Enabled; /* Really enabled? */
1809 struct fragment_program *Current; /* ptr to currently bound program */
1810 struct fp_machine Machine; /* machine state */
1811 GLfloat Parameters[MAX_NV_FRAGMENT_PROGRAM_PARAMS][4]; /* Env params */
1813 #if FEATURE_MESA_program_debug
1814 GLprogramcallbackMESA Callback;
1815 GLvoid *CallbackData;
1816 GLboolean CallbackEnabled;
1817 GLuint CurrentPosition;
1822 * State for GL_fragment_shader
1824 struct gl_ati_fragment_shader_state
1828 GLboolean Compiling;
1829 struct atifs_machine Machine; /* machine state */
1830 struct ati_fragment_shader *Current;
1834 * State for GL_ARB_occlusion_query
1836 struct gl_occlusion_state
1839 GLuint CurrentQueryObject;
1840 GLuint PassedCounter;
1841 struct _mesa_HashTable *QueryObjects;
1845 * gl2 unique interface identifier.
1846 * Each gl2 interface has its own interface id used for object queries.
1850 UIID_UNKNOWN, /* supported by all objects */
1851 UIID_GENERIC, /* generic object */
1852 UIID_CONTAINER, /* contains generic objects */
1853 UIID_SHADER, /* shader object */
1854 UIID_FRAGMENT_SHADER, /* fragment shader */
1855 UIID_VERTEX_SHADER, /* vertex shader */
1856 UIID_PROGRAM, /* program object */
1857 UIID_3DLABS_SHHANDLE /* encapsulates 3dlabs' ShHandle */
1860 struct gl2_unknown_intf
1862 GLvoid (* AddRef) (struct gl2_unknown_intf **);
1863 GLvoid (* Release) (struct gl2_unknown_intf **);
1864 struct gl2_unknown_intf **(* QueryInterface) (struct gl2_unknown_intf **, enum gl2_uiid uiid);
1867 struct gl2_generic_intf
1869 struct gl2_unknown_intf _unknown;
1870 GLvoid (* Delete) (struct gl2_generic_intf **);
1871 GLenum (* GetType) (struct gl2_generic_intf **);
1872 GLhandleARB (* GetName) (struct gl2_generic_intf **);
1873 GLboolean (* GetDeleteStatus) (struct gl2_generic_intf **);
1874 const GLcharARB *(* GetInfoLog) (struct gl2_generic_intf **);
1877 struct gl2_container_intf
1879 struct gl2_generic_intf _generic;
1880 GLboolean (* Attach) (struct gl2_container_intf **, struct gl2_generic_intf **);
1881 GLboolean (* Detach) (struct gl2_container_intf **, struct gl2_generic_intf **);
1882 GLsizei (* GetAttachedCount) (struct gl2_container_intf **);
1883 struct gl2_generic_intf **(* GetAttached) (struct gl2_container_intf **, GLuint);
1886 struct gl2_shader_intf
1888 struct gl2_generic_intf _generic;
1889 GLenum (* GetSubType) (struct gl2_shader_intf **);
1890 GLboolean (* GetCompileStatus) (struct gl2_shader_intf **);
1891 GLvoid (* SetSource) (struct gl2_shader_intf **, GLcharARB *, GLint *, GLsizei);
1892 const GLcharARB *(* GetSource) (struct gl2_shader_intf **);
1893 GLvoid (* Compile) (struct gl2_shader_intf **);
1896 struct gl2_program_intf
1898 struct gl2_container_intf _container;
1899 GLboolean (* GetLinkStatus) (struct gl2_program_intf **);
1900 GLboolean (* GetValidateStatus) (struct gl2_program_intf **);
1901 GLvoid (* Link) (struct gl2_program_intf **);
1902 GLvoid (* Validate) (struct gl2_program_intf **);
1905 struct gl2_fragment_shader_intf
1907 struct gl2_shader_intf _shader;
1910 struct gl2_vertex_shader_intf
1912 struct gl2_shader_intf _shader;
1915 struct gl2_3dlabs_shhandle_intf
1917 struct gl2_unknown_intf _unknown;
1918 GLvoid *(* GetShHandle) (struct gl2_3dlabs_shhandle_intf **);
1921 struct gl_shader_objects_state
1923 struct gl2_program_intf **current_program;
1928 * State which can be shared by multiple contexts:
1930 struct gl_shared_state
1932 _glthread_Mutex Mutex; /**< for thread safety */
1933 GLint RefCount; /**< Reference count */
1934 struct _mesa_HashTable *DisplayList; /**< Display lists hash table */
1935 struct _mesa_HashTable *TexObjects; /**< Texture objects hash table */
1938 * \name Default texture objects (shared by all multi-texture units)
1941 struct gl_texture_object *Default1D;
1942 struct gl_texture_object *Default2D;
1943 struct gl_texture_object *Default3D;
1944 struct gl_texture_object *DefaultCubeMap;
1945 struct gl_texture_object *DefaultRect;
1949 * \name GL_NV_vertex/_program
1952 struct _mesa_HashTable *Programs;
1953 #if FEATURE_ARB_vertex_program
1954 struct program *DefaultVertexProgram;
1956 #if FEATURE_ARB_fragment_program
1957 struct program *DefaultFragmentProgram;
1959 #if FEATURE_ATI_fragment_shader
1960 struct program *DefaultFragmentShader;
1964 #if FEATURE_ARB_vertex_buffer_object
1965 struct _mesa_HashTable *BufferObjects;
1968 struct _mesa_HashTable *GL2Objects;
1970 void *DriverData; /**< Device driver shared state */
1977 * A "frame buffer" is a color buffer and its optional ancillary buffers:
1978 * depth, accum, stencil, and software-simulated alpha buffers.
1979 * In C++ terms, think of this as a base class from which device drivers
1980 * will make derived classes.
1982 struct gl_frame_buffer
1984 GLvisual Visual; /**< The corresponding visual */
1986 GLuint Width, Height; /**< size of frame buffer in pixels */
1988 GLboolean Initialized;
1990 GLboolean UseSoftwareDepthBuffer;
1991 GLboolean UseSoftwareAccumBuffer;
1992 GLboolean UseSoftwareStencilBuffer;
1993 GLboolean UseSoftwareAlphaBuffers;
1994 GLboolean UseSoftwareAuxBuffers;
1996 /** \name Software depth (aka Z) buffer */
1998 GLvoid *DepthBuffer; /**< array [Width*Height] of GLushort or GLuint*/
2001 /** \name Software stencil buffer */
2003 GLstencil *Stencil; /**< array [Width*Height] of GLstencil values */
2006 /** \name Software accumulation buffer */
2008 GLaccum *Accum; /**< array [4*Width*Height] of GLaccum values */
2011 /** \name Software alpha planes */
2013 GLchan *FrontLeftAlpha; /**< array [Width*Height] of GLchan */
2014 GLchan *BackLeftAlpha; /**< array [Width*Height] of GLchan */
2015 GLchan *FrontRightAlpha; /**< array [Width*Height] of GLchan */
2016 GLchan *BackRightAlpha; /**< array [Width*Height] of GLchan */
2019 GLchan *AuxBuffers[MAX_AUX_BUFFERS];
2022 * \name Drawing bounds
2024 * Intersection of window size and scissor box
2027 GLint _Xmin; /**< inclusive */
2028 GLint _Ymin; /**< inclusive */
2029 GLint _Xmax; /**< exclusive */
2030 GLint _Ymax; /**< exclusive */
2036 * Constants which may be overridden by device driver during context creation
2037 * but are never changed after that.
2041 GLint MaxTextureLevels; /**< Maximum number of allowed mipmap levels. */
2042 GLint Max3DTextureLevels; /**< Maximum number of allowed mipmap levels for 3D texture targets. */
2043 GLint MaxCubeTextureLevels; /**< Maximum number of allowed mipmap levels for GL_ARB_texture_cube_map */
2044 GLint MaxTextureRectSize; /* GL_NV_texture_rectangle */
2045 GLuint MaxTextureCoordUnits;
2046 GLuint MaxTextureImageUnits;
2047 GLuint MaxTextureUnits; /* = MAX(CoordUnits, ImageUnits) */
2048 GLfloat MaxTextureMaxAnisotropy; /* GL_EXT_texture_filter_anisotropic */
2049 GLfloat MaxTextureLodBias; /* GL_EXT_texture_lod_bias */
2050 GLuint MaxArrayLockSize;
2052 GLfloat MinPointSize, MaxPointSize; /* aliased */
2053 GLfloat MinPointSizeAA, MaxPointSizeAA; /* antialiased */
2054 GLfloat PointSizeGranularity;
2055 GLfloat MinLineWidth, MaxLineWidth; /* aliased */
2056 GLfloat MinLineWidthAA, MaxLineWidthAA; /* antialiased */
2057 GLfloat LineWidthGranularity;
2058 GLuint MaxColorTableSize;
2059 GLuint MaxConvolutionWidth;
2060 GLuint MaxConvolutionHeight;
2061 GLuint MaxClipPlanes;
2063 GLfloat MaxShininess; /* GL_NV_light_max_exponent */
2064 GLfloat MaxSpotExponent; /* GL_NV_light_max_exponent */
2065 GLuint MaxViewportWidth, MaxViewportHeight;
2066 /* GL_ARB_vertex_program */
2067 GLuint MaxVertexProgramInstructions;
2068 GLuint MaxVertexProgramAttribs;
2069 GLuint MaxVertexProgramTemps;
2070 GLuint MaxVertexProgramLocalParams;
2071 GLuint MaxVertexProgramEnvParams;
2072 GLuint MaxVertexProgramAddressRegs;
2073 /* GL_ARB_fragment_program */
2074 GLuint MaxFragmentProgramInstructions;
2075 GLuint MaxFragmentProgramAttribs;
2076 GLuint MaxFragmentProgramTemps;
2077 GLuint MaxFragmentProgramLocalParams;
2078 GLuint MaxFragmentProgramEnvParams;
2079 GLuint MaxFragmentProgramAddressRegs;
2080 GLuint MaxFragmentProgramAluInstructions;
2081 GLuint MaxFragmentProgramTexInstructions;
2082 GLuint MaxFragmentProgramTexIndirections;
2083 /* vertex or fragment program */
2084 GLuint MaxProgramMatrices;
2085 GLuint MaxProgramMatrixStackDepth;
2086 /* vertex array / buffer object bounds checking */
2087 GLboolean CheckArrayBounds;
2088 /* GL_ARB_draw_buffers */
2089 GLuint MaxDrawBuffers;
2090 /* GL_OES_read_format */
2091 GLenum ColorReadFormat;
2092 GLenum ColorReadType;
2097 * Enable flag for each OpenGL extension. Different device drivers will
2098 * enable different extensions at runtime.
2100 struct gl_extensions
2103 * \name Flags to quickly test if certain extensions are available.
2105 * Not every extension needs to have such a flag, but it's encouraged.
2108 GLboolean dummy; /* don't remove this! */
2109 GLboolean ARB_depth_texture;
2110 GLboolean ARB_draw_buffers;
2111 GLboolean ARB_fragment_program;
2112 GLboolean ARB_fragment_shader;
2113 GLboolean ARB_half_float_pixel;
2114 GLboolean ARB_imaging;
2115 GLboolean ARB_multisample;
2116 GLboolean ARB_multitexture;
2117 GLboolean ARB_occlusion_query;
2118 GLboolean ARB_point_sprite;
2119 GLboolean ARB_shader_objects;
2120 GLboolean ARB_shadow;
2121 GLboolean ARB_texture_border_clamp;
2122 GLboolean ARB_texture_compression;
2123 GLboolean ARB_texture_cube_map;
2124 GLboolean ARB_texture_env_combine;
2125 GLboolean ARB_texture_env_crossbar;
2126 GLboolean ARB_texture_env_dot3;
2127 GLboolean ARB_texture_float;
2128 GLboolean ARB_texture_mirrored_repeat;
2129 GLboolean ARB_texture_non_power_of_two;
2130 GLboolean ARB_transpose_matrix;
2131 GLboolean ARB_vertex_buffer_object;
2132 GLboolean ARB_vertex_program;
2133 GLboolean ARB_vertex_shader;
2134 GLboolean ARB_window_pos;
2137 GLboolean EXT_blend_color;
2138 GLboolean EXT_blend_equation_separate;
2139 GLboolean EXT_blend_func_separate;
2140 GLboolean EXT_blend_logic_op;
2141 GLboolean EXT_blend_minmax;
2142 GLboolean EXT_blend_subtract;
2143 GLboolean EXT_clip_volume_hint;
2144 GLboolean EXT_cull_vertex;
2145 GLboolean EXT_convolution;
2146 GLboolean EXT_compiled_vertex_array;
2147 GLboolean EXT_copy_texture;
2148 GLboolean EXT_depth_bounds_test;
2149 GLboolean EXT_draw_range_elements;
2150 GLboolean EXT_fog_coord;
2151 GLboolean EXT_histogram;
2152 GLboolean EXT_multi_draw_arrays;
2153 GLboolean EXT_paletted_texture;
2154 GLboolean EXT_packed_pixels;
2155 GLboolean EXT_pixel_buffer_object;
2156 GLboolean EXT_point_parameters;
2157 GLboolean EXT_polygon_offset;
2158 GLboolean EXT_rescale_normal;
2159 GLboolean EXT_shadow_funcs;
2160 GLboolean EXT_secondary_color;
2161 GLboolean EXT_separate_specular_color;
2162 GLboolean EXT_shared_texture_palette;
2163 GLboolean EXT_stencil_wrap;
2164 GLboolean EXT_stencil_two_side;
2165 GLboolean EXT_subtexture;
2166 GLboolean EXT_texture;
2167 GLboolean EXT_texture_object;
2168 GLboolean EXT_texture3D;
2169 GLboolean EXT_texture_compression_s3tc;
2170 GLboolean EXT_texture_env_add;
2171 GLboolean EXT_texture_env_combine;
2172 GLboolean EXT_texture_env_dot3;
2173 GLboolean EXT_texture_filter_anisotropic;
2174 GLboolean EXT_texture_lod_bias;
2175 GLboolean EXT_texture_mirror_clamp;
2176 GLboolean EXT_vertex_array;
2177 GLboolean EXT_vertex_array_set;
2178 /* vendor extensions */
2179 GLboolean APPLE_client_storage;
2180 GLboolean APPLE_packed_pixels;
2181 GLboolean ATI_texture_mirror_once;
2182 GLboolean ATI_texture_env_combine3;
2183 GLboolean ATI_fragment_shader;
2184 GLboolean HP_occlusion_test;
2185 GLboolean IBM_rasterpos_clip;
2186 GLboolean IBM_multimode_draw_arrays;
2187 GLboolean MESA_pack_invert;
2188 GLboolean MESA_packed_depth_stencil;
2189 GLboolean MESA_program_debug;
2190 GLboolean MESA_resize_buffers;
2191 GLboolean MESA_ycbcr_texture;
2192 GLboolean NV_blend_square;
2193 GLboolean NV_fragment_program;
2194 GLboolean NV_light_max_exponent;
2195 GLboolean NV_point_sprite;
2196 GLboolean NV_texgen_reflection;
2197 GLboolean NV_texture_rectangle;
2198 GLboolean NV_vertex_program;
2199 GLboolean NV_vertex_program1_1;
2200 GLboolean OES_read_format;
2201 GLboolean SGI_color_matrix;
2202 GLboolean SGI_color_table;
2203 GLboolean SGI_texture_color_table;
2204 GLboolean SGIS_generate_mipmap;
2205 GLboolean SGIS_pixel_texture;
2206 GLboolean SGIS_texture_edge_clamp;
2207 GLboolean SGIS_texture_lod;
2208 GLboolean SGIX_depth_texture;
2209 GLboolean SGIX_pixel_texture;
2210 GLboolean SGIX_shadow;
2211 GLboolean SGIX_shadow_ambient; /* or GL_ARB_shadow_ambient */
2212 GLboolean TDFX_texture_compression_FXT1;
2215 /* The extension string */
2216 const GLubyte *String;
2221 * A stack of matrices (projection, modelview, color, texture, etc).
2225 GLmatrix *Top; /**< points into Stack */
2226 GLmatrix *Stack; /**< array [MaxDepth] of GLmatrix */
2227 GLuint Depth; /**< 0 <= Depth < MaxDepth */
2228 GLuint MaxDepth; /**< size of Stack[] array */
2229 GLuint DirtyFlag; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2234 * \name Bits for image transfer operations
2236 * \sa __GLcontextRec::ImageTransferState.
2239 #define IMAGE_SCALE_BIAS_BIT 0x1
2240 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2241 #define IMAGE_MAP_COLOR_BIT 0x4
2242 #define IMAGE_COLOR_TABLE_BIT 0x8
2243 #define IMAGE_CONVOLUTION_BIT 0x10
2244 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2245 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2246 #define IMAGE_COLOR_MATRIX_BIT 0x80
2247 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2248 #define IMAGE_HISTOGRAM_BIT 0x200
2249 #define IMAGE_MIN_MAX_BIT 0x400
2250 #define IMAGE_CLAMP_BIT 0x800 /* extra */
2253 /** Pixel Transfer ops up to convolution */
2254 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2255 IMAGE_SHIFT_OFFSET_BIT | \
2256 IMAGE_MAP_COLOR_BIT | \
2257 IMAGE_COLOR_TABLE_BIT)
2259 /** Pixel transfer ops after convolution */
2260 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2261 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2262 IMAGE_COLOR_MATRIX_BIT | \
2263 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2264 IMAGE_HISTOGRAM_BIT | \
2270 * \name Bits to indicate what state has changed.
2275 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2276 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2277 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2278 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2279 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2280 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2281 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2282 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2283 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2284 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2285 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2286 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2287 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2288 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2289 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2290 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2291 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2292 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2293 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2294 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2295 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2296 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2297 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2298 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2299 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2300 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2301 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2302 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2308 * \name Bits to track array state changes
2310 * Also used to summarize array enabled.
2313 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2314 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2315 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2316 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2317 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2318 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2319 #define _NEW_ARRAY_INDEX VERT_BIT_SIX
2320 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_SEVEN
2321 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2322 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2323 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2324 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2325 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2326 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2327 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2328 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2329 #define _NEW_ARRAY_ATTRIB_0 0x10000 /* start at bit 16 */
2330 #define _NEW_ARRAY_ALL 0xffffffff
2333 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2334 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2339 * \name A bunch of flags that we think might be useful to drivers.
2341 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2344 #define DD_FLATSHADE 0x1
2345 #define DD_SEPARATE_SPECULAR 0x2
2346 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2347 #define DD_TRI_LIGHT_TWOSIDE 0x8
2348 #define DD_TRI_UNFILLED 0x10
2349 #define DD_TRI_SMOOTH 0x20
2350 #define DD_TRI_STIPPLE 0x40
2351 #define DD_TRI_OFFSET 0x80
2352 #define DD_LINE_SMOOTH 0x100
2353 #define DD_LINE_STIPPLE 0x200
2354 #define DD_LINE_WIDTH 0x400
2355 #define DD_POINT_SMOOTH 0x800
2356 #define DD_POINT_SIZE 0x1000
2357 #define DD_POINT_ATTEN 0x2000
2358 #define DD_TRI_TWOSTENCIL 0x4000
2363 * \name Define the state changes under which each of these bits might change
2366 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2367 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2368 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2369 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2370 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2371 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2372 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2373 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2374 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2375 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2376 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2377 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2378 #define _DD_NEW_POINT_SIZE _NEW_POINT
2379 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2383 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2388 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2391 #define _IMAGE_NEW_TRANSFER_STATE (_NEW_PIXEL | _NEW_COLOR_MATRIX)
2397 * Forward declaration of display list data types:
2400 typedef union node Node;
2403 /* This has to be included here. */
2407 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2410 * Core Mesa's support for tnl modules:
2412 struct gl_tnl_module
2415 * Vertex format to be lazily swapped into current dispatch.
2417 const GLvertexformat *Current;
2420 * \name Record of functions swapped out.
2421 * On restore, only need to swap these functions back in.
2424 void *Swapped[NUM_VERTEX_FORMAT_ENTRIES][2];
2429 /* Strictly this is a tnl/ private concept, but it doesn't seem
2430 * worthwhile adding a tnl private structure just to hold this one bit
2433 #define MESA_DLIST_DANGLING_REFS 0x1
2435 /* Provide a location where information about a display list can be
2436 * collected. Could be extended with driverPrivate structures,
2437 * etc. in the future.
2439 struct mesa_display_list
2448 * State used during display list compilation and execution.
2450 struct mesa_list_state
2452 struct mesa_display_list *CallStack[MAX_LIST_NESTING];
2453 GLuint CallDepth; /**< Current recursion calling depth */
2455 struct mesa_display_list *CurrentList;
2456 Node *CurrentListPtr; /**< Head of list being compiled */
2457 GLuint CurrentListNum; /**< Number of the list being compiled */
2458 Node *CurrentBlock; /**< Pointer to current block of nodes */
2459 GLuint CurrentPos; /**< Index into current block of nodes */
2461 GLvertexformat ListVtxfmt;
2463 GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
2464 GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
2466 GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
2467 GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
2469 GLubyte ActiveIndex;
2470 GLfloat CurrentIndex;
2472 GLubyte ActiveEdgeFlag;
2473 GLboolean CurrentEdgeFlag;
2478 * Mesa rendering context.
2480 * This is the central context data structure for Mesa. Almost all
2481 * OpenGL state is contained in this structure.
2482 * Think of this as a base class from which device drivers will derive
2485 * The GLcontext typedef names this structure.
2487 struct __GLcontextRec
2490 * \name OS related interfaces.
2492 * These \b must be the first members of this structure, because they are
2493 * exposed to the outside world (i.e. GLX extension).
2496 __GLimports imports;
2497 __GLexports exports;
2500 /** State possibly shared with other contexts in the address space */
2501 struct gl_shared_state *Shared;
2503 /** \name API function pointer tables */
2505 struct _glapi_table *Save; /**< Display list save functions */
2506 struct _glapi_table *Exec; /**< Execute functions */
2507 struct _glapi_table *CurrentDispatch; /**< == Save or Exec !! */
2511 GLframebuffer *DrawBuffer; /**< buffer for writing */
2512 GLframebuffer *ReadBuffer; /**< buffer for reading */
2515 * Device driver function pointer table
2517 struct dd_function_table Driver;
2519 void *DriverCtx; /**< Points to device driver context/state */
2520 void *DriverMgrCtx; /**< Points to device driver manager (optional)*/
2522 /** Core/Driver constants */
2523 struct gl_constants Const;
2525 /** \name The various 4x4 matrix stacks */
2527 struct matrix_stack ModelviewMatrixStack;
2528 struct matrix_stack ProjectionMatrixStack;
2529 struct matrix_stack ColorMatrixStack;
2530 struct matrix_stack TextureMatrixStack[MAX_TEXTURE_COORD_UNITS];
2531 struct matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
2532 struct matrix_stack *CurrentStack; /**< Points to one of the above stacks */
2535 /** Combined modelview and projection matrix */
2536 GLmatrix _ModelProjectMatrix;
2538 /** \name Display lists */
2539 struct mesa_list_state ListState;
2541 GLboolean ExecuteFlag; /**< Execute GL commands? */
2542 GLboolean CompileFlag; /**< Compile GL commands into display list? */
2545 struct gl_extensions Extensions;
2547 /** \name Renderer attribute stack */
2549 GLuint AttribStackDepth;
2550 struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
2553 /** \name Renderer attribute groups
2555 * We define a struct for each attribute group to make pushing and popping
2556 * attributes easy. Also it's a good organization.
2559 struct gl_accum_attrib Accum; /**< Accumulation buffer attributes */
2560 struct gl_colorbuffer_attrib Color; /**< Color buffers attributes */
2561 struct gl_current_attrib Current; /**< Current attributes */
2562 struct gl_depthbuffer_attrib Depth; /**< Depth buffer attributes */
2563 struct gl_eval_attrib Eval; /**< Eval attributes */
2564 struct gl_fog_attrib Fog; /**< Fog attributes */
2565 struct gl_hint_attrib Hint; /**< Hint attributes */
2566 struct gl_light_attrib Light; /**< Light attributes */
2567 struct gl_line_attrib Line; /**< Line attributes */
2568 struct gl_list_attrib List; /**< List attributes */
2569 struct gl_multisample_attrib Multisample;
2570 struct gl_pixel_attrib Pixel; /**< Pixel attributes */
2571 struct gl_point_attrib Point; /**< Point attributes */
2572 struct gl_polygon_attrib Polygon; /**< Polygon attributes */
2573 GLuint PolygonStipple[32]; /**< Polygon stipple */
2574 struct gl_scissor_attrib Scissor; /**< Scissor attributes */
2575 struct gl_stencil_attrib Stencil; /**< Stencil buffer attributes */
2576 struct gl_texture_attrib Texture; /**< Texture attributes */
2577 struct gl_transform_attrib Transform; /**< Transformation attributes */
2578 struct gl_viewport_attrib Viewport; /**< Viewport attributes */
2581 /** \name Client attribute stack */
2583 GLuint ClientAttribStackDepth;
2584 struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
2587 /** \name Client attribute groups */
2589 struct gl_array_attrib Array; /**< Vertex arrays */
2590 struct gl_pixelstore_attrib Pack; /**< Pixel packing */
2591 struct gl_pixelstore_attrib Unpack; /**< Pixel unpacking */
2592 struct gl_pixelstore_attrib DefaultPacking; /**< Default params */
2595 /** \name Other assorted state (not pushed/popped on attribute stack) */
2597 struct gl_histogram_attrib Histogram;
2598 struct gl_minmax_attrib MinMax;
2599 struct gl_convolution_attrib Convolution1D;
2600 struct gl_convolution_attrib Convolution2D;
2601 struct gl_convolution_attrib Separable2D;
2603 struct gl_evaluators EvalMap; /**< All evaluators */
2604 struct gl_feedback Feedback; /**< Feedback */
2605 struct gl_selection Select; /**< Selection */
2607 struct gl_color_table ColorTable; /**< Pre-convolution */
2608 struct gl_color_table ProxyColorTable; /**< Pre-convolution */
2609 struct gl_color_table PostConvolutionColorTable;
2610 struct gl_color_table ProxyPostConvolutionColorTable;
2611 struct gl_color_table PostColorMatrixColorTable;
2612 struct gl_color_table ProxyPostColorMatrixColorTable;
2614 struct gl_program_state Program; /**< for vertex or fragment progs */
2615 struct gl_vertex_program_state VertexProgram; /**< GL_NV_vertex_program */
2616 struct gl_fragment_program_state FragmentProgram; /**< GL_NV_fragment_program */
2617 struct gl_ati_fragment_shader_state ATIFragmentShader; /**< GL_ATI_fragment_shader */
2619 struct gl_occlusion_state Occlusion; /**< GL_ARB_occlusion_query */
2621 struct gl_shader_objects_state ShaderObjects; /* GL_ARB_shader_objects */
2624 GLenum ErrorValue; /**< Last error code */
2625 GLenum RenderMode; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
2626 GLuint NewState; /**< bitwise-or of _NEW_* flags */
2628 /** \name Derived state */
2630 GLuint _TriangleCaps; /**< bitwise-or of DD_* flags */
2631 GLuint _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
2632 GLfloat _EyeZDir[3];
2633 GLfloat _ModelViewInvScale;
2634 GLuint _NeedEyeCoords;
2635 GLuint _ForceEyeCoords;
2636 GLboolean _RotateMode;
2637 GLenum _CurrentProgram; /* currently executing program */
2639 struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */
2640 struct gl_shine_tab *_ShineTabList; /**< MRU list of inactive shine tables */
2643 struct gl_list_extensions ListExt; /**< driver dlist extensions */
2646 GLboolean OcclusionResult; /**< for GL_HP_occlusion_test */
2647 GLboolean OcclusionResultSaved; /**< for GL_HP_occlusion_test */
2648 GLuint _Facing; /**< This is a hack for 2-sided stencil test.
2650 * We don't have a better way to communicate this value from
2651 * swrast_setup to swrast. */
2654 /** \name Z buffer stuff */
2656 GLuint DepthMax; /**< Max depth buffer value */
2657 GLfloat DepthMaxF; /**< Float max depth buffer value */
2658 GLfloat MRD; /**< minimum resolvable difference in Z values */
2661 /** \name Color clamping (tentative part of GL_ARB_color_clamp_control) */
2663 GLboolean ClampFragmentColors;
2664 GLboolean ClampVertexColors;
2667 /** \name For debugging/development only */
2669 GLboolean FirstTimeCurrent;
2672 /** Dither disable via MESA_NO_DITHER env var */
2675 /** software compression/decompression supported or not */
2676 GLboolean Mesa_DXTn;
2678 /** Core tnl module support */
2679 struct gl_tnl_module TnlModule;
2682 * \name Hooks for module contexts.
2684 * These will eventually live in the driver or elsewhere.
2687 void *swrast_context;
2688 void *swsetup_context;
2689 void *swtnl_context;
2691 void *acache_context;
2697 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
2698 extern const char *_mesa_prim_name[GL_POLYGON+4];
2702 extern int MESA_VERBOSE;
2703 extern int MESA_DEBUG_FLAGS;
2704 # define MESA_FUNCTION __FUNCTION__
2706 # define MESA_VERBOSE 0
2707 # define MESA_DEBUG_FLAGS 0
2708 # define MESA_FUNCTION "a function"
2717 VERBOSE_VARRAY = 0x0001,
2718 VERBOSE_TEXTURE = 0x0002,
2719 VERBOSE_IMMEDIATE = 0x0004,
2720 VERBOSE_PIPELINE = 0x0008,
2721 VERBOSE_DRIVER = 0x0010,
2722 VERBOSE_STATE = 0x0020,
2723 VERBOSE_API = 0x0040,
2724 VERBOSE_DISPLAY_LIST = 0x0100,
2725 VERBOSE_LIGHTING = 0x0200,
2726 VERBOSE_PRIMS = 0x0400,
2727 VERBOSE_VERTS = 0x0800
2733 DEBUG_ALWAYS_FLUSH = 0x1
2738 #define Elements(x) sizeof(x)/sizeof(*(x))
2741 #endif /* TYPES_H */