2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include "main/glheader.h"
38 #include "main/config.h"
39 #include "main/mfeatures.h"
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
42 #include "main/simple_list.h" /* struct simple_node */
43 #include "main/formats.h" /* MESA_FORMAT_COUNT */
47 * Color channel data type.
50 typedef GLubyte GLchan
;
52 #define CHAN_MAXF 255.0F
53 #define CHAN_TYPE GL_UNSIGNED_BYTE
55 typedef GLushort GLchan
;
56 #define CHAN_MAX 65535
57 #define CHAN_MAXF 65535.0F
58 #define CHAN_TYPE GL_UNSIGNED_SHORT
60 typedef GLfloat GLchan
;
62 #define CHAN_MAXF 1.0F
63 #define CHAN_TYPE GL_FLOAT
65 #error "illegal number of color channel bits"
70 * Stencil buffer data type.
73 typedef GLubyte GLstencil
;
74 #elif STENCIL_BITS==16
75 typedef GLushort GLstencil
;
77 # error "illegal number of stencil bits"
82 * \name 64-bit extension of GLbitfield.
85 typedef GLuint64 GLbitfield64
;
87 /** Set a single bit */
88 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
92 * \name Some forward type declarations
95 struct _mesa_HashTable
;
96 struct gl_attrib_node
;
97 struct gl_list_extensions
;
99 struct gl_pixelstore_attrib
;
100 struct gl_program_cache
;
101 struct gl_texture_format
;
102 struct gl_texture_image
;
103 struct gl_texture_object
;
109 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
110 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
111 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
112 #define PRIM_UNKNOWN (GL_POLYGON+3)
116 * Shader stages. Note that these will become 5 with tessellation.
117 * These MUST have the same values as gallium's PIPE_SHADER_*
121 MESA_SHADER_VERTEX
= 0,
122 MESA_SHADER_FRAGMENT
= 1,
123 MESA_SHADER_GEOMETRY
= 2,
124 MESA_SHADER_TYPES
= 3
130 * Indexes for vertex program attributes.
131 * GL_NV_vertex_program aliases generic attributes over the conventional
132 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
133 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
134 * generic attributes are distinct/separate).
139 VERT_ATTRIB_WEIGHT
= 1,
140 VERT_ATTRIB_NORMAL
= 2,
141 VERT_ATTRIB_COLOR0
= 3,
142 VERT_ATTRIB_COLOR1
= 4,
144 VERT_ATTRIB_COLOR_INDEX
= 6,
145 VERT_ATTRIB_POINT_SIZE
= 6, /*alias*/
146 VERT_ATTRIB_EDGEFLAG
= 7,
147 VERT_ATTRIB_TEX0
= 8,
148 VERT_ATTRIB_TEX1
= 9,
149 VERT_ATTRIB_TEX2
= 10,
150 VERT_ATTRIB_TEX3
= 11,
151 VERT_ATTRIB_TEX4
= 12,
152 VERT_ATTRIB_TEX5
= 13,
153 VERT_ATTRIB_TEX6
= 14,
154 VERT_ATTRIB_TEX7
= 15,
155 VERT_ATTRIB_GENERIC0
= 16,
156 VERT_ATTRIB_GENERIC1
= 17,
157 VERT_ATTRIB_GENERIC2
= 18,
158 VERT_ATTRIB_GENERIC3
= 19,
159 VERT_ATTRIB_GENERIC4
= 20,
160 VERT_ATTRIB_GENERIC5
= 21,
161 VERT_ATTRIB_GENERIC6
= 22,
162 VERT_ATTRIB_GENERIC7
= 23,
163 VERT_ATTRIB_GENERIC8
= 24,
164 VERT_ATTRIB_GENERIC9
= 25,
165 VERT_ATTRIB_GENERIC10
= 26,
166 VERT_ATTRIB_GENERIC11
= 27,
167 VERT_ATTRIB_GENERIC12
= 28,
168 VERT_ATTRIB_GENERIC13
= 29,
169 VERT_ATTRIB_GENERIC14
= 30,
170 VERT_ATTRIB_GENERIC15
= 31,
175 * Bitflags for vertex attributes.
176 * These are used in bitfields in many places.
179 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
180 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
181 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
182 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
183 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
184 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
185 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
186 #define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
187 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
188 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
189 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
190 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
191 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
192 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
193 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
194 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
195 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
196 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
197 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
198 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
199 #define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
200 #define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
201 #define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
202 #define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
203 #define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
204 #define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
205 #define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
206 #define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
207 #define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
208 #define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
209 #define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
210 #define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
212 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
213 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
218 * Indexes for vertex program result attributes
222 VERT_RESULT_HPOS
= 0,
223 VERT_RESULT_COL0
= 1,
224 VERT_RESULT_COL1
= 2,
225 VERT_RESULT_FOGC
= 3,
226 VERT_RESULT_TEX0
= 4,
227 VERT_RESULT_TEX1
= 5,
228 VERT_RESULT_TEX2
= 6,
229 VERT_RESULT_TEX3
= 7,
230 VERT_RESULT_TEX4
= 8,
231 VERT_RESULT_TEX5
= 9,
232 VERT_RESULT_TEX6
= 10,
233 VERT_RESULT_TEX7
= 11,
234 VERT_RESULT_PSIZ
= 12,
235 VERT_RESULT_BFC0
= 13,
236 VERT_RESULT_BFC1
= 14,
237 VERT_RESULT_EDGE
= 15,
238 VERT_RESULT_VAR0
= 16, /**< shader varying */
239 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
243 /*********************************************/
246 * Indexes for geometry program attributes.
250 GEOM_ATTRIB_POSITION
= 0,
251 GEOM_ATTRIB_COLOR0
= 1,
252 GEOM_ATTRIB_COLOR1
= 2,
253 GEOM_ATTRIB_SECONDARY_COLOR0
= 3,
254 GEOM_ATTRIB_SECONDARY_COLOR1
= 4,
255 GEOM_ATTRIB_FOG_FRAG_COORD
= 5,
256 GEOM_ATTRIB_POINT_SIZE
= 6,
257 GEOM_ATTRIB_CLIP_VERTEX
= 7,
258 GEOM_ATTRIB_PRIMITIVE_ID
= 8,
259 GEOM_ATTRIB_TEX_COORD
= 9,
261 GEOM_ATTRIB_VAR0
= 16,
262 GEOM_ATTRIB_MAX
= (GEOM_ATTRIB_VAR0
+ MAX_VARYING
)
266 * Bitflags for geometry attributes.
267 * These are used in bitfields in many places.
270 #define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
271 #define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
272 #define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
273 #define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
274 #define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
275 #define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
276 #define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
277 #define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
278 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
279 #define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
280 #define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
282 #define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
287 * Indexes for geometry program result attributes
292 GEOM_RESULT_COL0
= 1,
293 GEOM_RESULT_COL1
= 2,
294 GEOM_RESULT_SCOL0
= 3,
295 GEOM_RESULT_SCOL1
= 4,
296 GEOM_RESULT_FOGC
= 5,
297 GEOM_RESULT_TEX0
= 6,
298 GEOM_RESULT_TEX1
= 7,
299 GEOM_RESULT_TEX2
= 8,
300 GEOM_RESULT_TEX3
= 9,
301 GEOM_RESULT_TEX4
= 10,
302 GEOM_RESULT_TEX5
= 11,
303 GEOM_RESULT_TEX6
= 12,
304 GEOM_RESULT_TEX7
= 13,
305 GEOM_RESULT_PSIZ
= 14,
306 GEOM_RESULT_CLPV
= 15,
307 GEOM_RESULT_PRID
= 16,
308 GEOM_RESULT_LAYR
= 17,
309 GEOM_RESULT_VAR0
= 18, /**< shader varying, should really be 16 */
310 /* ### we need to -2 because var0 is 18 instead 16 like in the others */
311 GEOM_RESULT_MAX
= (GEOM_RESULT_VAR0
+ MAX_VARYING
- 2)
316 * Indexes for fragment program input attributes.
320 FRAG_ATTRIB_WPOS
= 0,
321 FRAG_ATTRIB_COL0
= 1,
322 FRAG_ATTRIB_COL1
= 2,
323 FRAG_ATTRIB_FOGC
= 3,
324 FRAG_ATTRIB_TEX0
= 4,
325 FRAG_ATTRIB_TEX1
= 5,
326 FRAG_ATTRIB_TEX2
= 6,
327 FRAG_ATTRIB_TEX3
= 7,
328 FRAG_ATTRIB_TEX4
= 8,
329 FRAG_ATTRIB_TEX5
= 9,
330 FRAG_ATTRIB_TEX6
= 10,
331 FRAG_ATTRIB_TEX7
= 11,
332 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
333 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
334 FRAG_ATTRIB_VAR0
= 14, /**< shader varying */
335 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
339 * Bitflags for fragment program input attributes.
342 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
343 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
344 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
345 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
346 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
347 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
348 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
349 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
350 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
351 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
352 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
353 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
354 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
355 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
356 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
358 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
359 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
361 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
373 * Fragment program results
377 FRAG_RESULT_DEPTH
= 0,
378 FRAG_RESULT_STENCIL
= 1,
379 /* If a single color should be written to all render targets, this
380 * register is written. No FRAG_RESULT_DATAn will be written.
382 FRAG_RESULT_COLOR
= 2,
384 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
385 * or ARB_fragment_program fragment.color[n]) color results. If
386 * any are written, FRAG_RESULT_COLOR will not be written.
388 FRAG_RESULT_DATA0
= 3,
389 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
394 * Indexes for all renderbuffers
398 /* the four standard color buffers */
406 /* optional aux buffer */
408 /* generic renderbuffers */
421 * Bit flags for all renderbuffers
423 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
424 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
425 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
426 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
427 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
428 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
429 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
430 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
431 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
432 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
433 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
434 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
435 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
436 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
437 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
438 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
439 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
440 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
441 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
444 * Mask of all the color buffer bits (but not accum).
446 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
447 BUFFER_BIT_BACK_LEFT | \
448 BUFFER_BIT_FRONT_RIGHT | \
449 BUFFER_BIT_BACK_RIGHT | \
451 BUFFER_BIT_COLOR0 | \
452 BUFFER_BIT_COLOR1 | \
453 BUFFER_BIT_COLOR2 | \
454 BUFFER_BIT_COLOR3 | \
455 BUFFER_BIT_COLOR4 | \
456 BUFFER_BIT_COLOR5 | \
457 BUFFER_BIT_COLOR6 | \
462 * Framebuffer configuration (aka visual / pixelformat)
463 * Note: some of these fields should be boolean, but it appears that
464 * code in drivers/dri/common/util.c requires int-sized fields.
470 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
471 GLuint doubleBufferMode
;
474 GLboolean haveAccumBuffer
;
475 GLboolean haveDepthBuffer
;
476 GLboolean haveStencilBuffer
;
478 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
479 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
480 GLint rgbBits
; /* total bits for rgb */
481 GLint indexBits
; /* total bits for colorindex */
483 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
491 /* EXT_visual_rating / GLX 1.2 */
494 /* EXT_visual_info / GLX 1.2 */
495 GLint transparentPixel
;
496 /* colors are floats scaled to ints */
497 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
498 GLint transparentIndex
;
500 /* ARB_multisample / SGIS_multisample */
504 /* SGIX_pbuffer / GLX 1.3 */
505 GLint maxPbufferWidth
;
506 GLint maxPbufferHeight
;
507 GLint maxPbufferPixels
;
508 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
509 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
511 /* OML_swap_method */
514 /* EXT_texture_from_pixmap */
515 GLint bindToTextureRgb
;
516 GLint bindToTextureRgba
;
517 GLint bindToMipmapTexture
;
518 GLint bindToTextureTargets
;
521 /* EXT_framebuffer_sRGB */
527 * Data structure for color tables
529 struct gl_color_table
531 GLenum InternalFormat
; /**< The user-specified format */
532 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
533 GLuint Size
; /**< number of entries in table */
534 GLfloat
*TableF
; /**< Color table, floating point values */
535 GLubyte
*TableUB
; /**< Color table, ubyte values */
540 GLubyte LuminanceSize
;
541 GLubyte IntensitySize
;
546 * \name Bit flags used for updating material values.
549 #define MAT_ATTRIB_FRONT_AMBIENT 0
550 #define MAT_ATTRIB_BACK_AMBIENT 1
551 #define MAT_ATTRIB_FRONT_DIFFUSE 2
552 #define MAT_ATTRIB_BACK_DIFFUSE 3
553 #define MAT_ATTRIB_FRONT_SPECULAR 4
554 #define MAT_ATTRIB_BACK_SPECULAR 5
555 #define MAT_ATTRIB_FRONT_EMISSION 6
556 #define MAT_ATTRIB_BACK_EMISSION 7
557 #define MAT_ATTRIB_FRONT_SHININESS 8
558 #define MAT_ATTRIB_BACK_SHININESS 9
559 #define MAT_ATTRIB_FRONT_INDEXES 10
560 #define MAT_ATTRIB_BACK_INDEXES 11
561 #define MAT_ATTRIB_MAX 12
563 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
564 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
565 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
566 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
567 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
568 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
570 #define MAT_INDEX_AMBIENT 0
571 #define MAT_INDEX_DIFFUSE 1
572 #define MAT_INDEX_SPECULAR 2
574 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
575 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
576 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
577 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
578 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
579 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
580 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
581 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
582 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
583 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
584 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
585 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
588 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
589 MAT_BIT_FRONT_AMBIENT | \
590 MAT_BIT_FRONT_DIFFUSE | \
591 MAT_BIT_FRONT_SPECULAR | \
592 MAT_BIT_FRONT_SHININESS | \
593 MAT_BIT_FRONT_INDEXES)
595 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
596 MAT_BIT_BACK_AMBIENT | \
597 MAT_BIT_BACK_DIFFUSE | \
598 MAT_BIT_BACK_SPECULAR | \
599 MAT_BIT_BACK_SHININESS | \
600 MAT_BIT_BACK_INDEXES)
602 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
606 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
607 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
610 * Material shininess lookup table.
614 struct gl_shine_tab
*next
, *prev
;
615 GLfloat tab
[SHINE_TABLE_SIZE
+1];
622 * Light source state.
626 struct gl_light
*next
; /**< double linked list with sentinel */
627 struct gl_light
*prev
;
629 GLfloat Ambient
[4]; /**< ambient color */
630 GLfloat Diffuse
[4]; /**< diffuse color */
631 GLfloat Specular
[4]; /**< specular color */
632 GLfloat EyePosition
[4]; /**< position in eye coordinates */
633 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
634 GLfloat SpotExponent
;
635 GLfloat SpotCutoff
; /**< in degrees */
636 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
637 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
638 GLfloat ConstantAttenuation
;
639 GLfloat LinearAttenuation
;
640 GLfloat QuadraticAttenuation
;
641 GLboolean Enabled
; /**< On/off flag */
644 * \name Derived fields
647 GLbitfield _Flags
; /**< State */
649 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
650 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
651 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
652 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
653 GLfloat _VP_inf_spot_attenuation
;
655 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
656 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
657 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
658 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
659 GLfloat _dli
; /**< CI diffuse light intensity */
660 GLfloat _sli
; /**< CI specular light intensity */
670 GLfloat Ambient
[4]; /**< ambient color */
671 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
672 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
673 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
674 * or GL_SEPARATE_SPECULAR_COLOR */
683 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
688 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
690 struct gl_accum_attrib
692 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
697 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
699 struct gl_colorbuffer_attrib
701 GLuint ClearIndex
; /**< Index to use for glClear */
702 GLfloat ClearColorUnclamped
[4]; /**< Color to use for glClear*/
703 GLclampf ClearColor
[4]; /**< Color to use for glClear */
705 GLuint IndexMask
; /**< Color index write mask */
706 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4];/**< Each flag is 0xff or 0x0 */
708 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
711 * \name alpha testing
714 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
715 GLenum AlphaFunc
; /**< Alpha test function */
716 GLfloat AlphaRefUnclamped
;
717 GLclampf AlphaRef
; /**< Alpha reference value */
724 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
726 /* NOTE: this does _not_ depend on fragment clamping or any other clamping control,
727 * only on the fixed-pointness of the render target.
728 * The query does however depend on fragment color clamping.
730 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
731 GLfloat BlendColor
[4]; /**< Blending color */
735 GLenum SrcRGB
; /**< RGB blend source term */
736 GLenum DstRGB
; /**< RGB blend dest term */
737 GLenum SrcA
; /**< Alpha blend source term */
738 GLenum DstA
; /**< Alpha blend dest term */
739 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
740 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
741 } Blend
[MAX_DRAW_BUFFERS
];
742 /** Are the blend func terms currently different for each buffer/target? */
743 GLboolean _BlendFuncPerBuffer
;
744 /** Are the blend equations currently different for each buffer/target? */
745 GLboolean _BlendEquationPerBuffer
;
752 GLenum LogicOp
; /**< Logic operator */
753 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
754 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
755 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
758 GLboolean DitherFlag
; /**< Dither enable flag */
760 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
761 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
762 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
763 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
765 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
770 * Current attribute group (GL_CURRENT_BIT).
772 struct gl_current_attrib
775 * \name Current vertex attributes.
776 * \note Values are valid only after FLUSH_VERTICES has been called.
777 * \note Index and Edgeflag current values are stored as floats in the
778 * SIX and SEVEN attribute slots.
780 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
783 * \name Current raster position attributes (always valid).
784 * \note This set of attributes is very similar to the SWvertex struct.
787 GLfloat RasterPos
[4];
788 GLfloat RasterDistance
;
789 GLfloat RasterColor
[4];
790 GLfloat RasterSecondaryColor
[4];
791 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
792 GLboolean RasterPosValid
;
798 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
800 struct gl_depthbuffer_attrib
802 GLenum Func
; /**< Function for depth buffer compare */
803 GLclampd Clear
; /**< Value to clear depth buffer to */
804 GLboolean Test
; /**< Depth buffering enabled flag */
805 GLboolean Mask
; /**< Depth buffer writable? */
806 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
807 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
812 * Evaluator attribute group (GL_EVAL_BIT).
814 struct gl_eval_attrib
820 GLboolean Map1Color4
;
822 GLboolean Map1Normal
;
823 GLboolean Map1TextureCoord1
;
824 GLboolean Map1TextureCoord2
;
825 GLboolean Map1TextureCoord3
;
826 GLboolean Map1TextureCoord4
;
827 GLboolean Map1Vertex3
;
828 GLboolean Map1Vertex4
;
829 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
830 GLboolean Map2Color4
;
832 GLboolean Map2Normal
;
833 GLboolean Map2TextureCoord1
;
834 GLboolean Map2TextureCoord2
;
835 GLboolean Map2TextureCoord3
;
836 GLboolean Map2TextureCoord4
;
837 GLboolean Map2Vertex3
;
838 GLboolean Map2Vertex4
;
839 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
840 GLboolean AutoNormal
;
844 * \name Map Grid endpoints and divisions and calculated du values
848 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
849 GLint MapGrid2un
, MapGrid2vn
;
850 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
851 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
857 * Fog attribute group (GL_FOG_BIT).
861 GLboolean Enabled
; /**< Fog enabled flag */
862 GLfloat ColorUnclamped
[4]; /**< Fog color */
863 GLfloat Color
[4]; /**< Fog color */
864 GLfloat Density
; /**< Density >= 0.0 */
865 GLfloat Start
; /**< Start distance in eye coords */
866 GLfloat End
; /**< End distance in eye coords */
867 GLfloat Index
; /**< Fog index */
868 GLenum Mode
; /**< Fog mode */
869 GLboolean ColorSumEnabled
;
870 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
871 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
876 * \brief Layout qualifiers for gl_FragDepth.
878 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
879 * a layout qualifier.
881 * \see enum ir_depth_layout
883 enum gl_frag_depth_layout
{
884 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
885 FRAG_DEPTH_LAYOUT_ANY
,
886 FRAG_DEPTH_LAYOUT_GREATER
,
887 FRAG_DEPTH_LAYOUT_LESS
,
888 FRAG_DEPTH_LAYOUT_UNCHANGED
893 * Hint attribute group (GL_HINT_BIT).
895 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
897 struct gl_hint_attrib
899 GLenum PerspectiveCorrection
;
902 GLenum PolygonSmooth
;
904 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
905 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
906 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
907 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
914 #define LIGHT_SPOT 0x1
915 #define LIGHT_LOCAL_VIEWER 0x2
916 #define LIGHT_POSITIONAL 0x4
917 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
922 * Lighting attribute group (GL_LIGHT_BIT).
924 struct gl_light_attrib
926 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
927 struct gl_lightmodel Model
; /**< Lighting model */
930 * Must flush FLUSH_VERTICES before referencing:
933 struct gl_material Material
; /**< Includes front & back values */
936 GLboolean Enabled
; /**< Lighting enabled flag */
937 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
938 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
939 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
940 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
941 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
942 GLboolean ColorMaterialEnabled
;
943 GLenum ClampVertexColor
;
944 GLboolean _ClampVertexColor
;
946 struct gl_light EnabledList
; /**< List sentinel */
949 * Derived state for optimizations:
952 GLboolean _NeedEyeCoords
;
953 GLboolean _NeedVertices
; /**< Use fast shader? */
954 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
955 GLfloat _BaseColor
[2][3];
961 * Line attribute group (GL_LINE_BIT).
963 struct gl_line_attrib
965 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
966 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
967 GLushort StipplePattern
; /**< Stipple pattern */
968 GLint StippleFactor
; /**< Stipple repeat factor */
969 GLfloat Width
; /**< Line width */
974 * Display list attribute group (GL_LIST_BIT).
976 struct gl_list_attrib
983 * Multisample attribute group (GL_MULTISAMPLE_BIT).
985 struct gl_multisample_attrib
988 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
989 GLboolean SampleAlphaToCoverage
;
990 GLboolean SampleAlphaToOne
;
991 GLboolean SampleCoverage
;
992 GLfloat SampleCoverageValue
;
993 GLboolean SampleCoverageInvert
;
998 * A pixelmap (see glPixelMap)
1003 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
1004 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
1009 * Collection of all pixelmaps
1013 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
1014 struct gl_pixelmap GtoG
;
1015 struct gl_pixelmap BtoB
;
1016 struct gl_pixelmap AtoA
;
1017 struct gl_pixelmap ItoR
;
1018 struct gl_pixelmap ItoG
;
1019 struct gl_pixelmap ItoB
;
1020 struct gl_pixelmap ItoA
;
1021 struct gl_pixelmap ItoI
;
1022 struct gl_pixelmap StoS
;
1027 * Pixel attribute group (GL_PIXEL_MODE_BIT).
1029 struct gl_pixel_attrib
1031 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
1033 /*--- Begin Pixel Transfer State ---*/
1034 /* Fields are in the order in which they're applied... */
1036 /** Scale & Bias (index shift, offset) */
1038 GLfloat RedBias
, RedScale
;
1039 GLfloat GreenBias
, GreenScale
;
1040 GLfloat BlueBias
, BlueScale
;
1041 GLfloat AlphaBias
, AlphaScale
;
1042 GLfloat DepthBias
, DepthScale
;
1043 GLint IndexShift
, IndexOffset
;
1047 /* Note: actual pixel maps are not part of this attrib group */
1048 GLboolean MapColorFlag
;
1049 GLboolean MapStencilFlag
;
1051 /*--- End Pixel Transfer State ---*/
1054 GLfloat ZoomX
, ZoomY
;
1059 * Point attribute group (GL_POINT_BIT).
1061 struct gl_point_attrib
1063 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1064 GLfloat Size
; /**< User-specified point size */
1065 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1066 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1067 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1068 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1069 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1070 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1071 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1072 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1077 * Polygon attribute group (GL_POLYGON_BIT).
1079 struct gl_polygon_attrib
1081 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1082 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1083 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1084 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1085 GLboolean CullFlag
; /**< Culling on/off flag */
1086 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1087 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1088 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1089 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1090 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1091 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1092 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1093 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1098 * Scissor attributes (GL_SCISSOR_BIT).
1100 struct gl_scissor_attrib
1102 GLboolean Enabled
; /**< Scissor test enabled? */
1103 GLint X
, Y
; /**< Lower left corner of box */
1104 GLsizei Width
, Height
; /**< Size of box */
1109 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1111 * Three sets of stencil data are tracked so that OpenGL 2.0,
1112 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1113 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1114 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1115 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1116 * GL_EXT_stencil_two_side GL_BACK state.
1118 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1119 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1121 * The derived value \c _TestTwoSide is set when the front-face and back-face
1122 * stencil state are different.
1124 struct gl_stencil_attrib
1126 GLboolean Enabled
; /**< Enabled flag */
1127 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1128 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1129 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1130 GLboolean _TestTwoSide
;
1131 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1132 GLenum Function
[3]; /**< Stencil function */
1133 GLenum FailFunc
[3]; /**< Fail function */
1134 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1135 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1136 GLint Ref
[3]; /**< Reference value */
1137 GLuint ValueMask
[3]; /**< Value mask */
1138 GLuint WriteMask
[3]; /**< Write mask */
1139 GLuint Clear
; /**< Clear value */
1144 * An index for each type of texture object. These correspond to the GL
1145 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1146 * Note: the order is from highest priority to lowest priority.
1150 TEXTURE_BUFFER_INDEX
,
1151 TEXTURE_2D_ARRAY_INDEX
,
1152 TEXTURE_1D_ARRAY_INDEX
,
1163 * Bit flags for each type of texture object
1164 * Used for Texture.Unit[]._ReallyEnabled flags.
1167 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1168 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1169 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1170 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1171 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1172 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1173 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1174 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1179 * TexGenEnabled flags.
1186 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1191 * Bit flag versions of the corresponding GL_ constants.
1194 #define TEXGEN_SPHERE_MAP 0x1
1195 #define TEXGEN_OBJ_LINEAR 0x2
1196 #define TEXGEN_EYE_LINEAR 0x4
1197 #define TEXGEN_REFLECTION_MAP_NV 0x8
1198 #define TEXGEN_NORMAL_MAP_NV 0x10
1200 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1201 TEXGEN_REFLECTION_MAP_NV | \
1202 TEXGEN_NORMAL_MAP_NV)
1203 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1204 TEXGEN_REFLECTION_MAP_NV | \
1205 TEXGEN_NORMAL_MAP_NV | \
1211 /** Tex-gen enabled for texture unit? */
1212 #define ENABLE_TEXGEN(unit) (1 << (unit))
1214 /** Non-identity texture matrix for texture unit? */
1215 #define ENABLE_TEXMAT(unit) (1 << (unit))
1219 * Texel fetch function prototype. We use texel fetch functions to
1220 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1221 * texture images. These functions help to isolate us from the gritty
1222 * details of all the various texture image encodings.
1224 * \param texImage texture image.
1225 * \param col texel column.
1226 * \param row texel row.
1227 * \param img texel image level/layer.
1228 * \param texelOut output texel (up to 4 GLchans)
1230 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1231 GLint col
, GLint row
, GLint img
,
1235 * As above, but returns floats.
1236 * Used for depth component images and for upcoming signed/float
1239 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1240 GLint col
, GLint row
, GLint img
,
1241 GLfloat
*texelOut
);
1244 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1245 GLint col
, GLint row
, GLint img
,
1250 * Texture image state. Describes the dimensions of a texture image,
1251 * the texel format and pointers to Texel Fetch functions.
1253 struct gl_texture_image
1255 GLint InternalFormat
; /**< Internal format as given by the user */
1256 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1257 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1258 * GL_INTENSITY, GL_COLOR_INDEX,
1259 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1260 * only. Used for choosing TexEnv arithmetic.
1262 gl_format TexFormat
; /**< The actual texture memory format */
1264 GLuint Border
; /**< 0 or 1 */
1265 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1266 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1267 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1268 GLuint Width2
; /**< = Width - 2*Border */
1269 GLuint Height2
; /**< = Height - 2*Border */
1270 GLuint Depth2
; /**< = Depth - 2*Border */
1271 GLuint WidthLog2
; /**< = log2(Width2) */
1272 GLuint HeightLog2
; /**< = log2(Height2) */
1273 GLuint DepthLog2
; /**< = log2(Depth2) */
1274 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1275 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1276 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1277 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1278 GLboolean IsClientData
; /**< Data owned by client? */
1279 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1281 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1283 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1284 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1286 GLuint RowStride
; /**< Padded width in units of texels */
1287 GLuint
*ImageOffsets
; /**< if 3D texture: array [Depth] of offsets to
1288 each 2D slice in 'Data', in texels */
1289 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1292 * \name For device driver:
1295 void *DriverData
; /**< Arbitrary device driver data */
1301 * Indexes for cube map faces.
1316 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1317 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1319 struct gl_sampler_object
1324 GLenum WrapS
; /**< S-axis texture image wrap mode */
1325 GLenum WrapT
; /**< T-axis texture image wrap mode */
1326 GLenum WrapR
; /**< R-axis texture image wrap mode */
1327 GLenum MinFilter
; /**< minification filter */
1328 GLenum MagFilter
; /**< magnification filter */
1333 } BorderColor
; /**< Interpreted according to texture format */
1334 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1335 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1336 GLfloat LodBias
; /**< OpenGL 1.4 */
1337 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1338 GLenum CompareMode
; /**< GL_ARB_shadow */
1339 GLenum CompareFunc
; /**< GL_ARB_shadow */
1340 GLfloat CompareFailValue
; /**< GL_ARB_shadow_ambient */
1341 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1342 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1344 /* deprecated sampler state */
1345 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1347 /** Is the texture object complete with respect to this sampler? */
1348 GLboolean _CompleteTexture
;
1353 * Texture object state. Contains the array of mipmap images, border color,
1354 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1357 struct gl_texture_object
1359 _glthread_Mutex Mutex
; /**< for thread safety */
1360 GLint RefCount
; /**< reference count */
1361 GLuint Name
; /**< the user-visible texture object ID */
1362 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1364 struct gl_sampler_object Sampler
;
1366 GLfloat Priority
; /**< in [0,1] */
1367 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1368 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1369 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1370 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1371 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1372 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1373 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1374 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1375 GLboolean _Complete
; /**< Is texture object complete? */
1376 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1377 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1379 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1380 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1382 /** GL_ARB_texture_buffer_object */
1383 struct gl_buffer_object
*BufferObject
;
1384 GLenum BufferObjectFormat
;
1386 /** GL_EXT_paletted_texture */
1387 struct gl_color_table Palette
;
1390 * \name For device driver.
1391 * Note: instead of attaching driver data to this pointer, it's preferable
1392 * to instead use this struct as a base class for your own texture object
1393 * class. Driver->NewTextureObject() can be used to implement the
1396 void *DriverData
; /**< Arbitrary device driver data */
1400 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1401 #define MAX_COMBINER_TERMS 4
1405 * Texture combine environment state.
1407 struct gl_tex_env_combine_state
1409 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1410 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1411 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1412 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1413 GLenum SourceA
[MAX_COMBINER_TERMS
];
1414 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1415 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1416 GLenum OperandA
[MAX_COMBINER_TERMS
];
1417 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1418 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1419 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1420 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1425 * Texture coord generation state.
1429 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1430 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1431 GLfloat ObjectPlane
[4];
1432 GLfloat EyePlane
[4];
1437 * Texture unit state. Contains enable flags, texture environment/function/
1438 * combiners, texgen state, pointers to current texture objects and
1439 * post-filter color tables.
1441 struct gl_texture_unit
1443 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1444 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1446 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1447 GLclampf EnvColor
[4];
1448 GLfloat EnvColorUnclamped
[4];
1450 struct gl_texgen GenS
;
1451 struct gl_texgen GenT
;
1452 struct gl_texgen GenR
;
1453 struct gl_texgen GenQ
;
1454 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1455 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1457 GLfloat LodBias
; /**< for biasing mipmap levels */
1459 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1461 /** Current sampler object (GL_ARB_sampler_objects) */
1462 struct gl_sampler_object
*Sampler
;
1465 * \name GL_EXT_texture_env_combine
1467 struct gl_tex_env_combine_state Combine
;
1470 * Derived state based on \c EnvMode and the \c BaseFormat of the
1471 * currently enabled texture.
1473 struct gl_tex_env_combine_state _EnvMode
;
1476 * Currently enabled combiner state. This will point to either
1477 * \c Combine or \c _EnvMode.
1479 struct gl_tex_env_combine_state
*_CurrentCombine
;
1481 /** Current texture object pointers */
1482 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1484 /** Points to highest priority, complete and enabled texture object */
1485 struct gl_texture_object
*_Current
;
1490 * Texture attribute group (GL_TEXTURE_BIT).
1492 struct gl_texture_attrib
1494 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1495 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1497 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1499 /** GL_ARB_texture_buffer_object */
1500 struct gl_buffer_object
*BufferObject
;
1502 /** GL_ARB_seamless_cubemap */
1503 GLboolean CubeMapSeamless
;
1505 /** GL_EXT_shared_texture_palette */
1506 GLboolean SharedPalette
;
1507 struct gl_color_table Palette
;
1509 /** Texture units/samplers used by vertex or fragment texturing */
1510 GLbitfield _EnabledUnits
;
1512 /** Texture coord units/sets used for fragment texturing */
1513 GLbitfield _EnabledCoordUnits
;
1515 /** Texture coord units that have texgen enabled */
1516 GLbitfield _TexGenEnabled
;
1518 /** Texture coord units that have non-identity matrices */
1519 GLbitfield _TexMatEnabled
;
1521 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1522 GLbitfield _GenFlags
;
1527 * Transformation attribute group (GL_TRANSFORM_BIT).
1529 struct gl_transform_attrib
1531 GLenum MatrixMode
; /**< Matrix mode */
1532 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1533 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1534 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1535 GLboolean Normalize
; /**< Normalize all normals? */
1536 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1537 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1538 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1540 GLfloat CullEyePos
[4];
1541 GLfloat CullObjPos
[4];
1546 * Viewport attribute group (GL_VIEWPORT_BIT).
1548 struct gl_viewport_attrib
1550 GLint X
, Y
; /**< position */
1551 GLsizei Width
, Height
; /**< size */
1552 GLfloat Near
, Far
; /**< Depth buffer range */
1553 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1558 * GL_ARB_vertex/pixel_buffer_object buffer object
1560 struct gl_buffer_object
1562 _glthread_Mutex Mutex
;
1565 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1566 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1567 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1568 /** Fields describing a mapped buffer */
1570 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1571 GLvoid
*Pointer
; /**< User-space address of mapping */
1572 GLintptr Offset
; /**< Mapped offset */
1573 GLsizeiptr Length
; /**< Mapped length */
1575 GLboolean Written
; /**< Ever written to? (for debugging) */
1576 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1581 * Client pixel packing/unpacking attributes
1583 struct gl_pixelstore_attrib
1591 GLboolean SwapBytes
;
1593 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1594 GLboolean Invert
; /**< GL_MESA_pack_invert */
1595 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1600 * Client vertex array attributes
1602 struct gl_client_array
1604 GLint Size
; /**< components per element (1,2,3,4) */
1605 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1606 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1607 GLsizei Stride
; /**< user-specified stride */
1608 GLsizei StrideB
; /**< actual stride in bytes */
1609 const GLubyte
*Ptr
; /**< Points to array data */
1610 GLboolean Enabled
; /**< Enabled flag is a boolean */
1611 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1612 GLboolean Integer
; /**< Integer-valued? */
1613 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1614 GLuint _ElementSize
; /**< size of each element in bytes */
1616 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1617 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1622 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1623 * extension, but a nice encapsulation in any case.
1625 struct gl_array_object
1627 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1631 _glthread_Mutex Mutex
;
1632 GLboolean VBOonly
; /**< require all arrays to live in VBOs? */
1634 /** Conventional vertex arrays */
1636 struct gl_client_array Vertex
;
1637 struct gl_client_array Weight
;
1638 struct gl_client_array Normal
;
1639 struct gl_client_array Color
;
1640 struct gl_client_array SecondaryColor
;
1641 struct gl_client_array FogCoord
;
1642 struct gl_client_array Index
;
1643 struct gl_client_array EdgeFlag
;
1644 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1645 struct gl_client_array PointSize
;
1649 * Generic arrays for vertex programs/shaders.
1650 * For NV vertex programs, these attributes alias and take priority
1651 * over the conventional attribs above. For ARB vertex programs and
1652 * GLSL vertex shaders, these attributes are separate.
1654 struct gl_client_array VertexAttrib
[MAX_VERTEX_GENERIC_ATTRIBS
];
1656 /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1657 GLbitfield _Enabled
;
1660 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1661 * we can determine the max legal (in bounds) glDrawElements array index.
1668 * Vertex array state
1670 struct gl_array_attrib
1672 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1673 struct gl_array_object
*ArrayObj
;
1675 /** The default vertex array object */
1676 struct gl_array_object
*DefaultArrayObj
;
1678 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1679 struct _mesa_HashTable
*Objects
;
1681 GLint ActiveTexture
; /**< Client Active Texture */
1682 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1683 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1685 /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1686 GLboolean PrimitiveRestart
;
1687 GLuint RestartIndex
;
1689 GLbitfield NewState
; /**< mask of _NEW_ARRAY_* values */
1690 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1692 /* GL_ARB_vertex_buffer_object */
1693 struct gl_buffer_object
*ArrayBufferObj
;
1694 struct gl_buffer_object
*ElementArrayBufferObj
;
1699 * Feedback buffer state
1704 GLbitfield _Mask
; /**< FB_* bits */
1712 * Selection buffer state
1716 GLuint
*Buffer
; /**< selection buffer */
1717 GLuint BufferSize
; /**< size of the selection buffer */
1718 GLuint BufferCount
; /**< number of values in the selection buffer */
1719 GLuint Hits
; /**< number of records in the selection buffer */
1720 GLuint NameStackDepth
; /**< name stack depth */
1721 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1722 GLboolean HitFlag
; /**< hit flag */
1723 GLfloat HitMinZ
; /**< minimum hit depth */
1724 GLfloat HitMaxZ
; /**< maximum hit depth */
1729 * 1-D Evaluator control points
1733 GLuint Order
; /**< Number of control points */
1734 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1735 GLfloat
*Points
; /**< Points to contiguous control points */
1740 * 2-D Evaluator control points
1744 GLuint Uorder
; /**< Number of control points in U dimension */
1745 GLuint Vorder
; /**< Number of control points in V dimension */
1748 GLfloat
*Points
; /**< Points to contiguous control points */
1753 * All evaluator control point state
1755 struct gl_evaluators
1761 struct gl_1d_map Map1Vertex3
;
1762 struct gl_1d_map Map1Vertex4
;
1763 struct gl_1d_map Map1Index
;
1764 struct gl_1d_map Map1Color4
;
1765 struct gl_1d_map Map1Normal
;
1766 struct gl_1d_map Map1Texture1
;
1767 struct gl_1d_map Map1Texture2
;
1768 struct gl_1d_map Map1Texture3
;
1769 struct gl_1d_map Map1Texture4
;
1770 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1777 struct gl_2d_map Map2Vertex3
;
1778 struct gl_2d_map Map2Vertex4
;
1779 struct gl_2d_map Map2Index
;
1780 struct gl_2d_map Map2Color4
;
1781 struct gl_2d_map Map2Normal
;
1782 struct gl_2d_map Map2Texture1
;
1783 struct gl_2d_map Map2Texture2
;
1784 struct gl_2d_map Map2Texture3
;
1785 struct gl_2d_map Map2Texture4
;
1786 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1792 * Names of the various vertex/fragment program register files, etc.
1794 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1795 * All values should fit in a 4-bit field.
1797 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1798 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1799 * be "uniform" variables since they can only be set outside glBegin/End.
1800 * They're also all stored in the same Parameters array.
1804 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1805 PROGRAM_INPUT
, /**< machine->Inputs[] */
1806 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1807 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1808 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1809 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1810 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1811 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1812 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1813 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1814 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1815 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1816 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1817 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1818 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1824 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1825 * one of these values.
1829 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1830 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1831 SYSTEM_VALUE_MAX
/**< Number of values */
1835 /** Vertex and fragment instructions */
1836 struct prog_instruction
;
1837 struct gl_program_parameter_list
;
1838 struct gl_uniform_list
;
1842 * Base class for any kind of program object
1847 GLubyte
*String
; /**< Null-terminated program text */
1849 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1850 GLenum Format
; /**< String encoding format */
1853 struct prog_instruction
*Instructions
;
1855 GLbitfield InputsRead
; /**< Bitmask of which input regs are read */
1856 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1857 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1858 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1859 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1860 GLbitfield TexturesUsed
[MAX_TEXTURE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1861 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1862 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1865 /** Named parameters, constants, etc. from program text */
1866 struct gl_program_parameter_list
*Parameters
;
1867 /** Numbered local parameters */
1868 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1870 /** Vertex/fragment shader varying vars */
1871 struct gl_program_parameter_list
*Varying
;
1872 /** Vertex program user-defined attributes */
1873 struct gl_program_parameter_list
*Attributes
;
1875 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1876 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1877 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1878 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
1880 /** Bitmask of which register files are read/written with indirect
1881 * addressing. Mask of (1 << PROGRAM_x) bits.
1883 GLbitfield IndirectRegisterFiles
;
1885 /** Logical counts */
1887 GLuint NumInstructions
;
1888 GLuint NumTemporaries
;
1889 GLuint NumParameters
;
1890 GLuint NumAttributes
;
1891 GLuint NumAddressRegs
;
1892 GLuint NumAluInstructions
;
1893 GLuint NumTexInstructions
;
1894 GLuint NumTexIndirections
;
1896 /** Native, actual h/w counts */
1898 GLuint NumNativeInstructions
;
1899 GLuint NumNativeTemporaries
;
1900 GLuint NumNativeParameters
;
1901 GLuint NumNativeAttributes
;
1902 GLuint NumNativeAddressRegs
;
1903 GLuint NumNativeAluInstructions
;
1904 GLuint NumNativeTexInstructions
;
1905 GLuint NumNativeTexIndirections
;
1910 /** Vertex program object */
1911 struct gl_vertex_program
1913 struct gl_program Base
; /**< base class */
1914 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1915 GLboolean IsPositionInvariant
;
1919 /** Geometry program object */
1920 struct gl_geometry_program
1922 struct gl_program Base
; /**< base class */
1925 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1926 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1927 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1931 /** Fragment program object */
1932 struct gl_fragment_program
1934 struct gl_program Base
; /**< base class */
1935 GLboolean UsesKill
; /**< shader uses KIL instruction */
1936 GLboolean OriginUpperLeft
;
1937 GLboolean PixelCenterInteger
;
1938 enum gl_frag_depth_layout FragDepthLayout
;
1943 * State common to vertex and fragment programs.
1945 struct gl_program_state
1947 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1948 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1953 * Context state for vertex programs.
1955 struct gl_vertex_program_state
1957 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1958 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1959 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1960 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1961 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1963 /** Currently enabled and valid vertex program (including internal
1964 * programs, user-defined vertex programs and GLSL vertex shaders).
1965 * This is the program we must use when rendering.
1967 struct gl_vertex_program
*_Current
;
1969 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1971 /* For GL_NV_vertex_program only: */
1972 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1973 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1975 /** Should fixed-function T&L be implemented with a vertex prog? */
1976 GLboolean _MaintainTnlProgram
;
1978 /** Program to emulate fixed-function T&L (see above) */
1979 struct gl_vertex_program
*_TnlProgram
;
1981 /** Cache of fixed-function programs */
1982 struct gl_program_cache
*Cache
;
1984 GLboolean _Overriden
;
1989 * Context state for geometry programs.
1991 struct gl_geometry_program_state
1993 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
1994 GLboolean _Enabled
; /**< Enabled and valid program? */
1995 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
1997 /** Currently enabled and valid program (including internal programs
1998 * and compiled shader programs).
2000 struct gl_geometry_program
*_Current
;
2002 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2004 /** Cache of fixed-function programs */
2005 struct gl_program_cache
*Cache
;
2009 * Context state for fragment programs.
2011 struct gl_fragment_program_state
2013 GLboolean Enabled
; /**< User-set fragment program enable flag */
2014 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2015 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2017 /** Currently enabled and valid fragment program (including internal
2018 * programs, user-defined fragment programs and GLSL fragment shaders).
2019 * This is the program we must use when rendering.
2021 struct gl_fragment_program
*_Current
;
2023 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2025 /** Should fixed-function texturing be implemented with a fragment prog? */
2026 GLboolean _MaintainTexEnvProgram
;
2028 /** Program to emulate fixed-function texture env/combine (see above) */
2029 struct gl_fragment_program
*_TexEnvProgram
;
2031 /** Cache of fixed-function programs */
2032 struct gl_program_cache
*Cache
;
2037 * ATI_fragment_shader runtime state
2039 #define ATI_FS_INPUT_PRIMARY 0
2040 #define ATI_FS_INPUT_SECONDARY 1
2042 struct atifs_instruction
;
2043 struct atifs_setupinst
;
2046 * ATI fragment shader
2048 struct ati_fragment_shader
2052 struct atifs_instruction
*Instructions
[2];
2053 struct atifs_setupinst
*SetupInst
[2];
2054 GLfloat Constants
[8][4];
2055 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2056 GLubyte numArithInstr
[2];
2057 GLubyte regsAssigned
[2];
2058 GLubyte NumPasses
; /**< 1 or 2 */
2060 GLubyte last_optype
;
2061 GLboolean interpinp1
;
2067 * Context state for GL_ATI_fragment_shader
2069 struct gl_ati_fragment_shader_state
2072 GLboolean _Enabled
; /**< enabled and valid shader? */
2073 GLboolean Compiling
;
2074 GLfloat GlobalConstants
[8][4];
2075 struct ati_fragment_shader
*Current
;
2080 * Occlusion/timer query object.
2082 struct gl_query_object
2084 GLenum Target
; /**< The query target, when active */
2085 GLuint Id
; /**< hash table ID/name */
2086 GLuint64EXT Result
; /**< the counter */
2087 GLboolean Active
; /**< inside Begin/EndQuery */
2088 GLboolean Ready
; /**< result is ready? */
2093 * Context state for query objects.
2095 struct gl_query_state
2097 struct _mesa_HashTable
*QueryObjects
;
2098 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2099 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2101 /** GL_NV_conditional_render */
2102 struct gl_query_object
*CondRenderQuery
;
2104 /** GL_EXT_transform_feedback */
2105 struct gl_query_object
*PrimitivesGenerated
;
2106 struct gl_query_object
*PrimitivesWritten
;
2108 /** GL_ARB_timer_query */
2109 struct gl_query_object
*TimeElapsed
;
2111 GLenum CondRenderMode
;
2115 /** Sync object state */
2116 struct gl_sync_object
{
2117 struct simple_node link
;
2118 GLenum Type
; /**< GL_SYNC_FENCE */
2119 GLuint Name
; /**< Fence name */
2120 GLint RefCount
; /**< Reference count */
2121 GLboolean DeletePending
; /**< Object was deleted while there were still
2122 * live references (e.g., sync not yet finished)
2124 GLenum SyncCondition
;
2125 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2126 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2130 /** Set by #pragma directives */
2131 struct gl_sl_pragmas
2133 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2134 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2135 GLboolean Optimize
; /**< defaults on */
2136 GLboolean Debug
; /**< defaults off */
2141 * A GLSL vertex or fragment shader object.
2145 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2146 GLuint Name
; /**< AKA the handle */
2147 GLint RefCount
; /**< Reference count */
2148 GLboolean DeletePending
;
2149 GLboolean CompileStatus
;
2150 const GLchar
*Source
; /**< Source code string */
2151 GLuint SourceChecksum
; /**< for debug/logging purposes */
2152 struct gl_program
*Program
; /**< Post-compile assembly code */
2154 struct gl_sl_pragmas Pragmas
;
2156 unsigned Version
; /**< GLSL version used for linking */
2158 struct exec_list
*ir
;
2159 struct glsl_symbol_table
*symbols
;
2161 /** Shaders containing built-in functions that are used for linking. */
2162 struct gl_shader
*builtins_to_link
[16];
2163 unsigned num_builtins_to_link
;
2168 * A GLSL program object.
2169 * Basically a linked collection of vertex and fragment shaders.
2171 struct gl_shader_program
2173 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2174 GLuint Name
; /**< aka handle or ID */
2175 GLint RefCount
; /**< Reference count */
2176 GLboolean DeletePending
;
2178 GLuint NumShaders
; /**< number of attached shaders */
2179 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2181 /** User-defined attribute bindings (glBindAttribLocation) */
2182 struct gl_program_parameter_list
*Attributes
;
2184 /** Transform feedback varyings */
2188 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2189 } TransformFeedback
;
2191 /** Geometry shader state - copied into gl_geometry_program at link time */
2194 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2195 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2196 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2199 /* post-link info: */
2200 struct gl_vertex_program
*VertexProgram
; /**< Linked vertex program */
2201 struct gl_fragment_program
*FragmentProgram
; /**< Linked fragment prog */
2202 struct gl_geometry_program
*GeometryProgram
; /**< Linked geometry prog */
2203 struct gl_uniform_list
*Uniforms
;
2204 struct gl_program_parameter_list
*Varying
;
2205 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2206 GLboolean Validated
;
2207 GLboolean _Used
; /**< Ever used for drawing? */
2210 unsigned Version
; /**< GLSL version used for linking */
2213 * Per-stage shaders resulting from the first stage of linking.
2215 * Set of linked shaders for this program. The array is accessed using the
2216 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2219 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2223 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2224 #define GLSL_LOG 0x2 /**< Write shaders to files */
2225 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2226 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2227 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2228 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2229 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2230 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2234 * Context state for GLSL vertex/fragment shaders.
2236 struct gl_shader_state
2239 * Programs used for rendering
2241 * There is a separate program set for each shader stage. If
2242 * GL_EXT_separate_shader_objects is not supported, each of these must point
2243 * to \c NULL or to the same program.
2245 struct gl_shader_program
*CurrentVertexProgram
;
2246 struct gl_shader_program
*CurrentGeometryProgram
;
2247 struct gl_shader_program
*CurrentFragmentProgram
;
2250 * Program used by glUniform calls.
2252 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2254 struct gl_shader_program
*ActiveProgram
;
2258 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2262 * Compiler options for a single GLSL shaders type
2264 struct gl_shader_compiler_options
2266 /** Driver-selectable options: */
2267 GLboolean EmitCondCodes
; /**< Use condition codes? */
2268 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2270 * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't
2271 * support control flow.
2273 GLboolean EmitNoIfs
;
2274 GLboolean EmitNoLoops
;
2275 GLboolean EmitNoFunctions
;
2276 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2277 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2278 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2279 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2282 * \name Forms of indirect addressing the driver cannot do.
2285 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2286 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2287 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2288 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2291 GLuint MaxUnrollIterations
;
2293 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2297 * Transform feedback object state
2299 struct gl_transform_feedback_object
2301 GLuint Name
; /**< AKA the object ID */
2303 GLboolean Active
; /**< Is transform feedback enabled? */
2304 GLboolean Paused
; /**< Is transform feedback paused? */
2306 /** The feedback buffers */
2307 GLuint BufferNames
[MAX_FEEDBACK_ATTRIBS
];
2308 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_ATTRIBS
];
2310 /** Start of feedback data in dest buffer */
2311 GLintptr Offset
[MAX_FEEDBACK_ATTRIBS
];
2312 /** Max data to put into dest buffer (in bytes) */
2313 GLsizeiptr Size
[MAX_FEEDBACK_ATTRIBS
];
2318 * Context state for transform feedback.
2320 struct gl_transform_feedback
2322 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2324 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2326 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2327 struct gl_buffer_object
*CurrentBuffer
;
2329 /** The table of all transform feedback objects */
2330 struct _mesa_HashTable
*Objects
;
2332 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2333 struct gl_transform_feedback_object
*CurrentObject
;
2335 /** The default xform-fb object (Name==0) */
2336 struct gl_transform_feedback_object
*DefaultObject
;
2342 * State which can be shared by multiple contexts:
2344 struct gl_shared_state
2346 _glthread_Mutex Mutex
; /**< for thread safety */
2347 GLint RefCount
; /**< Reference count */
2348 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2349 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2351 /** Default texture objects (shared by all texture units) */
2352 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2354 /** Fallback texture used when a bound texture is incomplete */
2355 struct gl_texture_object
*FallbackTex
;
2358 * \name Thread safety and statechange notification for texture
2361 * \todo Improve the granularity of locking.
2364 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2365 GLuint TextureStateStamp
; /**< state notification for shared tex */
2368 /** Default buffer object for vertex arrays that aren't in VBOs */
2369 struct gl_buffer_object
*NullBufferObj
;
2372 * \name Vertex/geometry/fragment programs
2375 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2376 struct gl_vertex_program
*DefaultVertexProgram
;
2377 struct gl_fragment_program
*DefaultFragmentProgram
;
2378 struct gl_geometry_program
*DefaultGeometryProgram
;
2381 /* GL_ATI_fragment_shader */
2382 struct _mesa_HashTable
*ATIShaders
;
2383 struct ati_fragment_shader
*DefaultFragmentShader
;
2385 struct _mesa_HashTable
*BufferObjects
;
2387 /** Table of both gl_shader and gl_shader_program objects */
2388 struct _mesa_HashTable
*ShaderObjects
;
2390 /* GL_EXT_framebuffer_object */
2391 struct _mesa_HashTable
*RenderBuffers
;
2392 struct _mesa_HashTable
*FrameBuffers
;
2395 struct simple_node SyncObjects
;
2397 /** GL_ARB_sampler_objects */
2398 struct _mesa_HashTable
*SamplerObjects
;
2400 void *DriverData
; /**< Device driver shared state */
2407 * A renderbuffer stores colors or depth values or stencil values.
2408 * A framebuffer object will have a collection of these.
2409 * Data are read/written to the buffer with a handful of Get/Put functions.
2411 * Instances of this object are allocated with the Driver's NewRenderbuffer
2412 * hook. Drivers will likely wrap this class inside a driver-specific
2413 * class to simulate inheritance.
2415 struct gl_renderbuffer
2417 _glthread_Mutex Mutex
; /**< for thread safety */
2418 GLuint ClassID
; /**< Useful for drivers */
2421 GLuint Width
, Height
;
2422 GLint RowStride
; /**< Padded width in units of pixels */
2423 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2425 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2429 GLenum InternalFormat
; /**< The user-specified format */
2430 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2431 GL_STENCIL_INDEX. */
2432 gl_format Format
; /**< The actual renderbuffer memory format */
2434 GLenum DataType
; /**< Type of values passed to the Get/Put functions */
2435 GLvoid
*Data
; /**< This may not be used by some kinds of RBs */
2437 /* Used to wrap one renderbuffer around another: */
2438 struct gl_renderbuffer
*Wrapped
;
2440 /* Delete this renderbuffer */
2441 void (*Delete
)(struct gl_renderbuffer
*rb
);
2443 /* Allocate new storage for this renderbuffer */
2444 GLboolean (*AllocStorage
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2445 GLenum internalFormat
,
2446 GLuint width
, GLuint height
);
2448 /* Lock/Unlock are called before/after calling the Get/Put functions.
2449 * Not sure this is the right place for these yet.
2450 void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2451 void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2454 /* Return a pointer to the element/pixel at (x,y).
2455 * Should return NULL if the buffer memory can't be directly addressed.
2457 void *(*GetPointer
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2460 /* Get/Read a row of values.
2461 * The values will be of format _BaseFormat and type DataType.
2463 void (*GetRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2464 GLint x
, GLint y
, void *values
);
2466 /* Get/Read values at arbitrary locations.
2467 * The values will be of format _BaseFormat and type DataType.
2469 void (*GetValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2470 const GLint x
[], const GLint y
[], void *values
);
2472 /* Put/Write a row of values.
2473 * The values will be of format _BaseFormat and type DataType.
2475 void (*PutRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2476 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2478 /* Put/Write a row of RGB values. This is a special-case routine that's
2479 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2480 * a common case for glDrawPixels and some triangle routines.
2481 * The values will be of format GL_RGB and type DataType.
2483 void (*PutRowRGB
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2484 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2487 /* Put/Write a row of identical values.
2488 * The values will be of format _BaseFormat and type DataType.
2490 void (*PutMonoRow
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2491 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2493 /* Put/Write values at arbitrary locations.
2494 * The values will be of format _BaseFormat and type DataType.
2496 void (*PutValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2497 const GLint x
[], const GLint y
[], const void *values
,
2498 const GLubyte
*mask
);
2499 /* Put/Write identical values at arbitrary locations.
2500 * The values will be of format _BaseFormat and type DataType.
2502 void (*PutMonoValues
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2503 GLuint count
, const GLint x
[], const GLint y
[],
2504 const void *value
, const GLubyte
*mask
);
2509 * A renderbuffer attachment points to either a texture object (and specifies
2510 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2512 struct gl_renderbuffer_attachment
2514 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2518 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2519 * application supplied renderbuffer object.
2521 struct gl_renderbuffer
*Renderbuffer
;
2524 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2525 * supplied texture object.
2527 struct gl_texture_object
*Texture
;
2528 GLuint TextureLevel
; /**< Attached mipmap level. */
2529 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2530 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2531 * and 2D array textures */
2536 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2537 * In C++ terms, think of this as a base class from which device drivers
2538 * will make derived classes.
2540 struct gl_framebuffer
2542 _glthread_Mutex Mutex
; /**< for thread safety */
2544 * If zero, this is a window system framebuffer. If non-zero, this
2545 * is a FBO framebuffer; note that for some devices (i.e. those with
2546 * a natural pixel coordinate system for FBOs that differs from the
2547 * OpenGL/Mesa coordinate system), this means that the viewport,
2548 * polygon face orientation, and polygon stipple will have to be inverted.
2553 GLboolean DeletePending
;
2556 * The framebuffer's visual. Immutable if this is a window system buffer.
2557 * Computed from attachments if user-made FBO.
2559 struct gl_config Visual
;
2561 GLboolean Initialized
;
2563 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2565 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2567 GLint _Xmin
, _Xmax
; /**< inclusive */
2568 GLint _Ymin
, _Ymax
; /**< exclusive */
2571 /** \name Derived Z buffer stuff */
2573 GLuint _DepthMax
; /**< Max depth buffer value */
2574 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2575 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2578 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2581 /** Integer color values */
2582 GLboolean _IntegerColor
;
2584 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2585 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2587 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2588 * attribute group and GL_PIXEL attribute group, respectively.
2590 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2591 GLenum ColorReadBuffer
;
2593 /** Computed from ColorDraw/ReadBuffer above */
2594 GLuint _NumColorDrawBuffers
;
2595 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2596 GLint _ColorReadBufferIndex
; /* -1 = None */
2597 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2598 struct gl_renderbuffer
*_ColorReadBuffer
;
2600 /** The Actual depth/stencil buffers to use. May be wrappers around the
2601 * depth/stencil buffers attached above. */
2602 struct gl_renderbuffer
*_DepthBuffer
;
2603 struct gl_renderbuffer
*_StencilBuffer
;
2605 /** Delete this framebuffer */
2606 void (*Delete
)(struct gl_framebuffer
*fb
);
2611 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2615 GLushort RangeMin
; /**< min value exponent */
2616 GLushort RangeMax
; /**< max value exponent */
2617 GLushort Precision
; /**< number of mantissa bits */
2622 * Limits for vertex, geometry and fragment programs/shaders.
2624 struct gl_program_constants
2626 /* logical limits */
2627 GLuint MaxInstructions
;
2628 GLuint MaxAluInstructions
;
2629 GLuint MaxTexInstructions
;
2630 GLuint MaxTexIndirections
;
2633 GLuint MaxAddressRegs
;
2634 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2635 GLuint MaxParameters
;
2636 GLuint MaxLocalParams
;
2637 GLuint MaxEnvParams
;
2638 /* native/hardware limits */
2639 GLuint MaxNativeInstructions
;
2640 GLuint MaxNativeAluInstructions
;
2641 GLuint MaxNativeTexInstructions
;
2642 GLuint MaxNativeTexIndirections
;
2643 GLuint MaxNativeAttribs
;
2644 GLuint MaxNativeTemps
;
2645 GLuint MaxNativeAddressRegs
;
2646 GLuint MaxNativeParameters
;
2648 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2649 /* ES 2.0 and GL_ARB_ES2_compatibility */
2650 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2651 struct gl_precision LowInt
, MediumInt
, HighInt
;
2656 * Constants which may be overridden by device driver during context creation
2657 * but are never changed after that.
2661 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2662 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2663 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2664 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2665 GLint MaxArrayTextureLayers
; /**< Max layers in array textures */
2666 GLint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2667 GLuint MaxTextureCoordUnits
;
2668 GLuint MaxTextureImageUnits
;
2669 GLuint MaxVertexTextureImageUnits
;
2670 GLuint MaxCombinedTextureImageUnits
;
2671 GLuint MaxGeometryTextureImageUnits
;
2672 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2673 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2674 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2675 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2677 GLuint MaxArrayLockSize
;
2681 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2682 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2683 GLfloat PointSizeGranularity
;
2684 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2685 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2686 GLfloat LineWidthGranularity
;
2688 GLuint MaxColorTableSize
;
2690 GLuint MaxClipPlanes
;
2692 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2693 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2695 GLuint MaxViewportWidth
, MaxViewportHeight
;
2697 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2698 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2699 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2700 GLuint MaxProgramMatrices
;
2701 GLuint MaxProgramMatrixStackDepth
;
2703 /** vertex array / buffer object bounds checking */
2704 GLboolean CheckArrayBounds
;
2706 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2708 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2709 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2710 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2712 /** Number of varying vectors between vertex and fragment shaders */
2714 GLuint MaxVertexVaryingComponents
; /**< Between vert and geom shader */
2715 GLuint MaxGeometryVaryingComponents
; /**< Between geom and frag shader */
2717 /** GL_ARB_geometry_shader4 */
2718 GLuint MaxGeometryOutputVertices
;
2719 GLuint MaxGeometryTotalOutputComponents
;
2721 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2723 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2724 GLbitfield SupportedBumpUnits
;
2727 * Maximum amount of time, measured in nanseconds, that the server can wait.
2729 GLuint64 MaxServerWaitTimeout
;
2731 /** GL_EXT_provoking_vertex */
2732 GLboolean QuadsFollowProvokingVertexConvention
;
2734 /** OpenGL version 3.0 */
2735 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2737 /** OpenGL version 3.2 */
2738 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2740 /** GL_EXT_transform_feedback */
2741 GLuint MaxTransformFeedbackSeparateAttribs
;
2742 GLuint MaxTransformFeedbackSeparateComponents
;
2743 GLuint MaxTransformFeedbackInterleavedComponents
;
2745 /** GL_EXT_gpu_shader4 */
2746 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2748 /* GL_EXT_framebuffer_sRGB */
2749 GLboolean sRGBCapable
; /* can enable sRGB blend/update on FBOs */
2751 /* GL_ARB_robustness */
2752 GLenum ResetStrategy
;
2757 * Enable flag for each OpenGL extension. Different device drivers will
2758 * enable different extensions at runtime.
2760 struct gl_extensions
2762 GLboolean dummy
; /* don't remove this! */
2763 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2764 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2765 GLboolean ARB_ES2_compatibility
;
2766 GLboolean ARB_blend_func_extended
;
2767 GLboolean ARB_color_buffer_float
;
2768 GLboolean ARB_copy_buffer
;
2769 GLboolean ARB_depth_buffer_float
;
2770 GLboolean ARB_depth_clamp
;
2771 GLboolean ARB_depth_texture
;
2772 GLboolean ARB_draw_buffers
;
2773 GLboolean ARB_draw_buffers_blend
;
2774 GLboolean ARB_draw_elements_base_vertex
;
2775 GLboolean ARB_draw_instanced
;
2776 GLboolean ARB_fragment_coord_conventions
;
2777 GLboolean ARB_fragment_program
;
2778 GLboolean ARB_fragment_program_shadow
;
2779 GLboolean ARB_fragment_shader
;
2780 GLboolean ARB_framebuffer_object
;
2781 GLboolean ARB_explicit_attrib_location
;
2782 GLboolean ARB_geometry_shader4
;
2783 GLboolean ARB_half_float_pixel
;
2784 GLboolean ARB_half_float_vertex
;
2785 GLboolean ARB_instanced_arrays
;
2786 GLboolean ARB_map_buffer_range
;
2787 GLboolean ARB_multisample
;
2788 GLboolean ARB_multitexture
;
2789 GLboolean ARB_occlusion_query
;
2790 GLboolean ARB_occlusion_query2
;
2791 GLboolean ARB_point_sprite
;
2792 GLboolean ARB_sampler_objects
;
2793 GLboolean ARB_seamless_cube_map
;
2794 GLboolean ARB_shader_objects
;
2795 GLboolean ARB_shader_stencil_export
;
2796 GLboolean ARB_shading_language_100
;
2797 GLboolean ARB_shadow
;
2798 GLboolean ARB_shadow_ambient
;
2800 GLboolean ARB_texture_border_clamp
;
2801 GLboolean ARB_texture_buffer_object
;
2802 GLboolean ARB_texture_compression
;
2803 GLboolean ARB_texture_compression_rgtc
;
2804 GLboolean ARB_texture_cube_map
;
2805 GLboolean ARB_texture_env_combine
;
2806 GLboolean ARB_texture_env_crossbar
;
2807 GLboolean ARB_texture_env_dot3
;
2808 GLboolean ARB_texture_float
;
2809 GLboolean ARB_texture_mirrored_repeat
;
2810 GLboolean ARB_texture_multisample
;
2811 GLboolean ARB_texture_non_power_of_two
;
2812 GLboolean ARB_texture_rg
;
2813 GLboolean ARB_texture_rgb10_a2ui
;
2814 GLboolean ARB_timer_query
;
2815 GLboolean ARB_transform_feedback2
;
2816 GLboolean ARB_transpose_matrix
;
2817 GLboolean ARB_uniform_buffer_object
;
2818 GLboolean ARB_vertex_array_object
;
2819 GLboolean ARB_vertex_buffer_object
;
2820 GLboolean ARB_vertex_program
;
2821 GLboolean ARB_vertex_shader
;
2822 GLboolean ARB_vertex_type_2_10_10_10_rev
;
2823 GLboolean ARB_window_pos
;
2826 GLboolean EXT_blend_color
;
2827 GLboolean EXT_blend_equation_separate
;
2828 GLboolean EXT_blend_func_separate
;
2829 GLboolean EXT_blend_logic_op
;
2830 GLboolean EXT_blend_minmax
;
2831 GLboolean EXT_blend_subtract
;
2832 GLboolean EXT_clip_volume_hint
;
2833 GLboolean EXT_compiled_vertex_array
;
2834 GLboolean EXT_copy_texture
;
2835 GLboolean EXT_depth_bounds_test
;
2836 GLboolean EXT_draw_buffers2
;
2837 GLboolean EXT_draw_range_elements
;
2838 GLboolean EXT_fog_coord
;
2839 GLboolean EXT_framebuffer_blit
;
2840 GLboolean EXT_framebuffer_multisample
;
2841 GLboolean EXT_framebuffer_object
;
2842 GLboolean EXT_framebuffer_sRGB
;
2843 GLboolean EXT_gpu_program_parameters
;
2844 GLboolean EXT_gpu_shader4
;
2845 GLboolean EXT_multi_draw_arrays
;
2846 GLboolean EXT_paletted_texture
;
2847 GLboolean EXT_packed_depth_stencil
;
2848 GLboolean EXT_packed_float
;
2849 GLboolean EXT_packed_pixels
;
2850 GLboolean EXT_pixel_buffer_object
;
2851 GLboolean EXT_point_parameters
;
2852 GLboolean EXT_polygon_offset
;
2853 GLboolean EXT_provoking_vertex
;
2854 GLboolean EXT_rescale_normal
;
2855 GLboolean EXT_shadow_funcs
;
2856 GLboolean EXT_secondary_color
;
2857 GLboolean EXT_separate_shader_objects
;
2858 GLboolean EXT_separate_specular_color
;
2859 GLboolean EXT_shared_texture_palette
;
2860 GLboolean EXT_stencil_wrap
;
2861 GLboolean EXT_stencil_two_side
;
2862 GLboolean EXT_subtexture
;
2863 GLboolean EXT_texture
;
2864 GLboolean EXT_texture_object
;
2865 GLboolean EXT_texture3D
;
2866 GLboolean EXT_texture_array
;
2867 GLboolean EXT_texture_compression_latc
;
2868 GLboolean EXT_texture_compression_s3tc
;
2869 GLboolean EXT_texture_env_add
;
2870 GLboolean EXT_texture_env_combine
;
2871 GLboolean EXT_texture_env_dot3
;
2872 GLboolean EXT_texture_filter_anisotropic
;
2873 GLboolean EXT_texture_integer
;
2874 GLboolean EXT_texture_lod_bias
;
2875 GLboolean EXT_texture_mirror_clamp
;
2876 GLboolean EXT_texture_shared_exponent
;
2877 GLboolean EXT_texture_snorm
;
2878 GLboolean EXT_texture_sRGB
;
2879 GLboolean EXT_texture_sRGB_decode
;
2880 GLboolean EXT_texture_swizzle
;
2881 GLboolean EXT_transform_feedback
;
2882 GLboolean EXT_timer_query
;
2883 GLboolean EXT_vertex_array
;
2884 GLboolean EXT_vertex_array_bgra
;
2885 GLboolean EXT_vertex_array_set
;
2886 GLboolean OES_standard_derivatives
;
2887 /* vendor extensions */
2888 GLboolean AMD_conservative_depth
;
2889 GLboolean AMD_seamless_cubemap_per_texture
;
2890 GLboolean APPLE_client_storage
;
2891 GLboolean APPLE_packed_pixels
;
2892 GLboolean APPLE_vertex_array_object
;
2893 GLboolean APPLE_object_purgeable
;
2894 GLboolean ATI_envmap_bumpmap
;
2895 GLboolean ATI_texture_compression_3dc
;
2896 GLboolean ATI_texture_mirror_once
;
2897 GLboolean ATI_texture_env_combine3
;
2898 GLboolean ATI_fragment_shader
;
2899 GLboolean ATI_separate_stencil
;
2900 GLboolean IBM_rasterpos_clip
;
2901 GLboolean IBM_multimode_draw_arrays
;
2902 GLboolean MESA_pack_invert
;
2903 GLboolean MESA_resize_buffers
;
2904 GLboolean MESA_ycbcr_texture
;
2905 GLboolean MESA_texture_array
;
2906 GLboolean NV_blend_square
;
2907 GLboolean NV_conditional_render
;
2908 GLboolean NV_fragment_program
;
2909 GLboolean NV_fragment_program_option
;
2910 GLboolean NV_light_max_exponent
;
2911 GLboolean NV_point_sprite
;
2912 GLboolean NV_primitive_restart
;
2913 GLboolean NV_texture_barrier
;
2914 GLboolean NV_texgen_reflection
;
2915 GLboolean NV_texture_env_combine4
;
2916 GLboolean NV_texture_rectangle
;
2917 GLboolean NV_vertex_program
;
2918 GLboolean NV_vertex_program1_1
;
2919 GLboolean OES_read_format
;
2920 GLboolean SGIS_generate_mipmap
;
2921 GLboolean SGIS_texture_edge_clamp
;
2922 GLboolean SGIS_texture_lod
;
2923 GLboolean TDFX_texture_compression_FXT1
;
2925 GLboolean OES_EGL_image
;
2926 GLboolean OES_draw_texture
;
2927 GLboolean EXT_texture_format_BGRA8888
;
2928 GLboolean extension_sentinel
;
2929 /** The extension string */
2930 const GLubyte
*String
;
2931 /** Number of supported extensions */
2937 * A stack of matrices (projection, modelview, color, texture, etc).
2939 struct gl_matrix_stack
2941 GLmatrix
*Top
; /**< points into Stack */
2942 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2943 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2944 GLuint MaxDepth
; /**< size of Stack[] array */
2945 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2950 * \name Bits for image transfer operations
2951 * \sa __struct gl_contextRec::ImageTransferState.
2954 #define IMAGE_SCALE_BIAS_BIT 0x1
2955 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2956 #define IMAGE_MAP_COLOR_BIT 0x4
2957 #define IMAGE_CLAMP_BIT 0x800
2960 /** Pixel Transfer ops */
2961 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2962 IMAGE_SHIFT_OFFSET_BIT | \
2963 IMAGE_MAP_COLOR_BIT)
2966 * \name Bits to indicate what state has changed.
2969 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2970 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2971 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2972 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2973 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2974 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2975 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2976 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2977 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2978 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2979 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2980 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2981 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2982 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2983 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2984 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2985 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2986 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2987 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2988 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2989 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2990 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2991 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2992 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2993 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2994 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2995 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2996 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2997 #define _NEW_BUFFER_OBJECT (1 << 28)
2998 #define _NEW_FRAG_CLAMP (1 << 29)
3004 * \name Bits to track array state changes
3006 * Also used to summarize array enabled.
3009 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
3010 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
3011 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
3012 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
3013 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
3014 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
3015 #define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
3016 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
3017 #define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
3018 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
3019 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
3020 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
3021 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
3022 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
3023 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
3024 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
3025 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
3026 #define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
3027 #define _NEW_ARRAY_ALL 0xffffffff
3030 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
3031 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
3037 * \name A bunch of flags that we think might be useful to drivers.
3039 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
3042 #define DD_FLATSHADE 0x1
3043 #define DD_SEPARATE_SPECULAR 0x2
3044 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
3045 #define DD_TRI_LIGHT_TWOSIDE 0x8
3046 #define DD_TRI_UNFILLED 0x10
3047 #define DD_TRI_SMOOTH 0x20
3048 #define DD_TRI_STIPPLE 0x40
3049 #define DD_TRI_OFFSET 0x80
3050 #define DD_LINE_SMOOTH 0x100
3051 #define DD_LINE_STIPPLE 0x200
3052 #define DD_POINT_SMOOTH 0x400
3053 #define DD_POINT_ATTEN 0x800
3054 #define DD_TRI_TWOSTENCIL 0x1000
3059 * \name Define the state changes under which each of these bits might change
3062 #define _DD_NEW_FLATSHADE _NEW_LIGHT
3063 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3064 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
3065 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
3066 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
3067 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
3068 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
3069 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
3070 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
3071 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
3072 #define _DD_NEW_LINE_WIDTH _NEW_LINE
3073 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
3074 #define _DD_NEW_POINT_SIZE _NEW_POINT
3075 #define _DD_NEW_POINT_ATTEN _NEW_POINT
3080 * Composite state flags
3083 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3093 /* This has to be included here. */
3098 * Display list flags.
3099 * Strictly this is a tnl-private concept, but it doesn't seem
3100 * worthwhile adding a tnl private structure just to hold this one bit
3103 #define DLIST_DANGLING_REFS 0x1
3106 /** Opaque declaration of display list payload data type */
3107 union gl_dlist_node
;
3111 * Provide a location where information about a display list can be
3112 * collected. Could be extended with driverPrivate structures,
3113 * etc. in the future.
3115 struct gl_display_list
3118 GLbitfield Flags
; /**< DLIST_x flags */
3119 /** The dlist commands are in a linked list of nodes */
3120 union gl_dlist_node
*Head
;
3125 * State used during display list compilation and execution.
3127 struct gl_dlist_state
3129 GLuint CallDepth
; /**< Current recursion calling depth */
3131 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3132 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3133 GLuint CurrentPos
; /**< Index into current block of nodes */
3135 GLvertexformat ListVtxfmt
;
3137 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3138 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3140 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3141 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3143 GLubyte ActiveIndex
;
3144 GLfloat CurrentIndex
;
3146 GLubyte ActiveEdgeFlag
;
3147 GLboolean CurrentEdgeFlag
;
3150 /* State known to have been set by the currently-compiling display
3151 * list. Used to eliminate some redundant state changes.
3159 * Enum for the OpenGL APIs we know about and may support.
3170 * Mesa rendering context.
3172 * This is the central context data structure for Mesa. Almost all
3173 * OpenGL state is contained in this structure.
3174 * Think of this as a base class from which device drivers will derive
3177 * The struct gl_context typedef names this structure.
3181 /** State possibly shared with other contexts in the address space */
3182 struct gl_shared_state
*Shared
;
3184 /** \name API function pointer tables */
3187 struct _glapi_table
*Save
; /**< Display list save functions */
3188 struct _glapi_table
*Exec
; /**< Execute functions */
3189 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
3192 struct gl_config Visual
;
3193 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3194 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3195 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3196 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3199 * Device driver function pointer table
3201 struct dd_function_table Driver
;
3203 void *DriverCtx
; /**< Points to device driver context/state */
3205 /** Core/Driver constants */
3206 struct gl_constants Const
;
3208 /** \name The various 4x4 matrix stacks */
3210 struct gl_matrix_stack ModelviewMatrixStack
;
3211 struct gl_matrix_stack ProjectionMatrixStack
;
3212 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3213 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3214 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3217 /** Combined modelview and projection matrix */
3218 GLmatrix _ModelProjectMatrix
;
3220 /** \name Display lists */
3221 struct gl_dlist_state ListState
;
3223 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3224 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3226 /** Extension information */
3227 struct gl_extensions Extensions
;
3230 GLuint VersionMajor
, VersionMinor
;
3231 char *VersionString
;
3233 /** \name State attribute stack (for glPush/PopAttrib) */
3235 GLuint AttribStackDepth
;
3236 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3239 /** \name Renderer attribute groups
3241 * We define a struct for each attribute group to make pushing and popping
3242 * attributes easy. Also it's a good organization.
3245 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3246 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3247 struct gl_current_attrib Current
; /**< Current attributes */
3248 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3249 struct gl_eval_attrib Eval
; /**< Eval attributes */
3250 struct gl_fog_attrib Fog
; /**< Fog attributes */
3251 struct gl_hint_attrib Hint
; /**< Hint attributes */
3252 struct gl_light_attrib Light
; /**< Light attributes */
3253 struct gl_line_attrib Line
; /**< Line attributes */
3254 struct gl_list_attrib List
; /**< List attributes */
3255 struct gl_multisample_attrib Multisample
;
3256 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3257 struct gl_point_attrib Point
; /**< Point attributes */
3258 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3259 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3260 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3261 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3262 struct gl_texture_attrib Texture
; /**< Texture attributes */
3263 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3264 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3267 /** \name Client attribute stack */
3269 GLuint ClientAttribStackDepth
;
3270 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3273 /** \name Client attribute groups */
3275 struct gl_array_attrib Array
; /**< Vertex arrays */
3276 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3277 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3278 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3281 /** \name Other assorted state (not pushed/popped on attribute stack) */
3283 struct gl_pixelmaps PixelMaps
;
3285 struct gl_evaluators EvalMap
; /**< All evaluators */
3286 struct gl_feedback Feedback
; /**< Feedback */
3287 struct gl_selection Select
; /**< Selection */
3289 struct gl_program_state Program
; /**< general program state */
3290 struct gl_vertex_program_state VertexProgram
;
3291 struct gl_fragment_program_state FragmentProgram
;
3292 struct gl_geometry_program_state GeometryProgram
;
3293 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3295 struct gl_shader_state Shader
; /**< GLSL shader object state */
3296 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3298 struct gl_query_state Query
; /**< occlusion, timer queries */
3300 struct gl_transform_feedback TransformFeedback
;
3302 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3303 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3306 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3308 /* GL_EXT_framebuffer_object */
3309 struct gl_renderbuffer
*CurrentRenderbuffer
;
3311 GLenum ErrorValue
; /**< Last error code */
3313 /* GL_ARB_robustness */
3317 * Recognize and silence repeated error debug messages in buggy apps.
3319 const char *ErrorDebugFmtString
;
3320 GLuint ErrorDebugCount
;
3322 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3323 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3325 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3327 GLbitfield varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3329 /** \name Derived state */
3331 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
3332 * state validation so they need to always be current.
3334 GLbitfield _TriangleCaps
;
3335 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3336 GLfloat _EyeZDir
[3];
3337 GLfloat _ModelViewInvScale
;
3338 GLboolean _NeedEyeCoords
;
3339 GLboolean _ForceEyeCoords
;
3341 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3343 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
3344 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
3347 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3349 /** \name For debugging/development only */
3351 GLboolean FirstTimeCurrent
;
3354 /** software compression/decompression supported or not */
3355 GLboolean Mesa_DXTn
;
3357 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3360 * Use dp4 (rather than mul/mad) instructions for position
3363 GLboolean mvp_with_dp4
;
3366 * \name Hooks for module contexts.
3368 * These will eventually live in the driver or elsewhere.
3371 void *swrast_context
;
3372 void *swsetup_context
;
3373 void *swtnl_context
;
3375 struct st_context
*st
;
3382 extern int MESA_VERBOSE
;
3383 extern int MESA_DEBUG_FLAGS
;
3384 # define MESA_FUNCTION __FUNCTION__
3386 # define MESA_VERBOSE 0
3387 # define MESA_DEBUG_FLAGS 0
3388 # define MESA_FUNCTION "a function"
3395 /** The MESA_VERBOSE var is a bitmask of these flags */
3398 VERBOSE_VARRAY
= 0x0001,
3399 VERBOSE_TEXTURE
= 0x0002,
3400 VERBOSE_MATERIAL
= 0x0004,
3401 VERBOSE_PIPELINE
= 0x0008,
3402 VERBOSE_DRIVER
= 0x0010,
3403 VERBOSE_STATE
= 0x0020,
3404 VERBOSE_API
= 0x0040,
3405 VERBOSE_DISPLAY_LIST
= 0x0100,
3406 VERBOSE_LIGHTING
= 0x0200,
3407 VERBOSE_PRIMS
= 0x0400,
3408 VERBOSE_VERTS
= 0x0800,
3409 VERBOSE_DISASSEM
= 0x1000,
3410 VERBOSE_DRAW
= 0x2000,
3411 VERBOSE_SWAPBUFFERS
= 0x4000
3415 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3418 DEBUG_ALWAYS_FLUSH
= 0x1
3423 #endif /* MTYPES_H */