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 */
52 * \name 64-bit extension of GLbitfield.
55 typedef GLuint64 GLbitfield64
;
57 /** Set a single bit */
58 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
59 /** Set all bits up to excluding bit b */
60 #define BITFIELD64_MASK(b) \
61 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
62 /** Set count bits starting from bit b */
63 #define BITFIELD64_RANGE(b, count) \
64 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
68 * \name Some forward type declarations
71 struct _mesa_HashTable
;
72 struct gl_attrib_node
;
73 struct gl_list_extensions
;
75 struct gl_program_cache
;
76 struct gl_texture_object
;
79 struct gl_uniform_storage
;
83 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
84 #define PRIM_OUTSIDE_BEGIN_END (GL_POLYGON+1)
85 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
86 #define PRIM_UNKNOWN (GL_POLYGON+3)
90 * Shader stages. Note that these will become 5 with tessellation.
91 * These MUST have the same values as gallium's PIPE_SHADER_*
95 MESA_SHADER_VERTEX
= 0,
96 MESA_SHADER_FRAGMENT
= 1,
103 * Indexes for vertex program attributes.
104 * GL_NV_vertex_program aliases generic attributes over the conventional
105 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
106 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
107 * generic attributes are distinct/separate).
112 VERT_ATTRIB_WEIGHT
= 1,
113 VERT_ATTRIB_NORMAL
= 2,
114 VERT_ATTRIB_COLOR0
= 3,
115 VERT_ATTRIB_COLOR1
= 4,
117 VERT_ATTRIB_COLOR_INDEX
= 6,
118 VERT_ATTRIB_EDGEFLAG
= 7,
119 VERT_ATTRIB_TEX0
= 8,
120 VERT_ATTRIB_TEX1
= 9,
121 VERT_ATTRIB_TEX2
= 10,
122 VERT_ATTRIB_TEX3
= 11,
123 VERT_ATTRIB_TEX4
= 12,
124 VERT_ATTRIB_TEX5
= 13,
125 VERT_ATTRIB_TEX6
= 14,
126 VERT_ATTRIB_TEX7
= 15,
127 VERT_ATTRIB_POINT_SIZE
= 16,
128 VERT_ATTRIB_GENERIC0
= 17,
129 VERT_ATTRIB_GENERIC1
= 18,
130 VERT_ATTRIB_GENERIC2
= 19,
131 VERT_ATTRIB_GENERIC3
= 20,
132 VERT_ATTRIB_GENERIC4
= 21,
133 VERT_ATTRIB_GENERIC5
= 22,
134 VERT_ATTRIB_GENERIC6
= 23,
135 VERT_ATTRIB_GENERIC7
= 24,
136 VERT_ATTRIB_GENERIC8
= 25,
137 VERT_ATTRIB_GENERIC9
= 26,
138 VERT_ATTRIB_GENERIC10
= 27,
139 VERT_ATTRIB_GENERIC11
= 28,
140 VERT_ATTRIB_GENERIC12
= 29,
141 VERT_ATTRIB_GENERIC13
= 30,
142 VERT_ATTRIB_GENERIC14
= 31,
143 VERT_ATTRIB_GENERIC15
= 32,
148 * Symbolic constats to help iterating over
149 * specific blocks of vertex attributes.
152 * includes all fixed function attributes as well as
153 * the aliased GL_NV_vertex_program shader attributes.
155 * include the classic texture coordinate attributes.
156 * Is a subset of VERT_ATTRIB_FF.
157 * VERT_ATTRIB_GENERIC_NV
158 * include the NV shader attributes.
159 * Is a subset of VERT_ATTRIB_FF.
160 * VERT_ATTRIB_GENERIC
161 * include the OpenGL 2.0+ GLSL generic shader attributes.
162 * These alias the generic GL_ARB_vertex_shader attributes.
164 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
165 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
167 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
168 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
170 #define VERT_ATTRIB_GENERIC_NV(i) (VERT_ATTRIB_POS + (i))
171 #define VERT_ATTRIB_GENERIC_NV_MAX MAX_VERTEX_GENERIC_ATTRIBS
173 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
174 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
177 * Bitflags for vertex attributes.
178 * These are used in bitfields in many places.
181 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
182 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
183 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
184 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
185 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
186 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
187 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
188 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
189 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
190 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
191 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
192 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
193 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
194 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
195 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
196 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
197 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
198 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
200 #define VERT_BIT(i) BITFIELD64_BIT(i)
201 #define VERT_BIT_ALL (BITFIELD64_BIT(VERT_ATTRIB_MAX) - 1)
203 #define VERT_BIT_FF(i) VERT_BIT(i)
204 #define VERT_BIT_FF_ALL (BITFIELD64_BIT(VERT_ATTRIB_FF_MAX) - 1)
205 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
206 #define VERT_BIT_TEX_ALL \
207 ((BITFIELD64_BIT(VERT_ATTRIB_TEX_MAX) - 1) << VERT_ATTRIB_TEX(0))
208 #define VERT_BIT_GENERIC_NV(i) VERT_BIT(VERT_ATTRIB_GENERIC_NV(i))
209 #define VERT_BIT_GENERIC_NV_ALL \
210 ((BITFIELD64_BIT(VERT_ATTRIB_GENERIC_NV_MAX) - 1) << (VERT_ATTRIB_GENERIC_NV(0)))
211 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
212 #define VERT_BIT_GENERIC_ALL \
213 ((BITFIELD64_BIT(VERT_ATTRIB_GENERIC_MAX) - 1) << (VERT_ATTRIB_GENERIC(0)))
218 * Indexes for vertex program result attributes. Note that
219 * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
220 * assumptions about the layout of this enum.
224 VERT_RESULT_HPOS
= 0,
225 VERT_RESULT_COL0
= 1,
226 VERT_RESULT_COL1
= 2,
227 VERT_RESULT_FOGC
= 3,
228 VERT_RESULT_TEX0
= 4,
229 VERT_RESULT_TEX1
= 5,
230 VERT_RESULT_TEX2
= 6,
231 VERT_RESULT_TEX3
= 7,
232 VERT_RESULT_TEX4
= 8,
233 VERT_RESULT_TEX5
= 9,
234 VERT_RESULT_TEX6
= 10,
235 VERT_RESULT_TEX7
= 11,
236 VERT_RESULT_PSIZ
= 12,
237 VERT_RESULT_BFC0
= 13,
238 VERT_RESULT_BFC1
= 14,
239 VERT_RESULT_EDGE
= 15,
240 VERT_RESULT_CLIP_VERTEX
= 16,
241 VERT_RESULT_CLIP_DIST0
= 17,
242 VERT_RESULT_CLIP_DIST1
= 18,
243 VERT_RESULT_VAR0
= 19, /**< shader varying */
244 VERT_RESULT_MAX
= (VERT_RESULT_VAR0
+ MAX_VARYING
)
248 /*********************************************/
251 * Indexes for fragment program input attributes. Note that
252 * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
253 * assumptions about the layout of this enum.
257 FRAG_ATTRIB_WPOS
= 0,
258 FRAG_ATTRIB_COL0
= 1,
259 FRAG_ATTRIB_COL1
= 2,
260 FRAG_ATTRIB_FOGC
= 3,
261 FRAG_ATTRIB_TEX0
= 4,
262 FRAG_ATTRIB_TEX1
= 5,
263 FRAG_ATTRIB_TEX2
= 6,
264 FRAG_ATTRIB_TEX3
= 7,
265 FRAG_ATTRIB_TEX4
= 8,
266 FRAG_ATTRIB_TEX5
= 9,
267 FRAG_ATTRIB_TEX6
= 10,
268 FRAG_ATTRIB_TEX7
= 11,
269 FRAG_ATTRIB_FACE
= 12, /**< front/back face */
270 FRAG_ATTRIB_PNTC
= 13, /**< sprite/point coord */
271 FRAG_ATTRIB_CLIP_DIST0
= 14,
272 FRAG_ATTRIB_CLIP_DIST1
= 15,
273 FRAG_ATTRIB_VAR0
= 16, /**< shader varying */
274 FRAG_ATTRIB_MAX
= (FRAG_ATTRIB_VAR0
+ MAX_VARYING
)
279 * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
281 * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
283 * gl_vert_result values which have no corresponding gl_frag_attrib
284 * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
285 * VERT_RESULT_EDGE) are converted to a value of -1.
288 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result
)
290 if (vert_result
>= VERT_RESULT_CLIP_DIST0
)
291 return vert_result
- VERT_RESULT_CLIP_DIST0
+ FRAG_ATTRIB_CLIP_DIST0
;
292 else if (vert_result
<= VERT_RESULT_TEX7
)
300 * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
302 * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
304 * gl_frag_attrib values which have no corresponding gl_vert_result
305 * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
308 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib
)
310 if (frag_attrib
<= FRAG_ATTRIB_TEX7
)
312 else if (frag_attrib
>= FRAG_ATTRIB_CLIP_DIST0
)
313 return frag_attrib
- FRAG_ATTRIB_CLIP_DIST0
+ VERT_RESULT_CLIP_DIST0
;
320 * Bitflags for fragment program input attributes.
323 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
324 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
325 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
326 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
327 #define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
328 #define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
329 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
330 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
331 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
332 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
333 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
334 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
335 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
336 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
337 #define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
339 #define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
340 #define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
342 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
354 * Fragment program results
358 FRAG_RESULT_DEPTH
= 0,
359 FRAG_RESULT_STENCIL
= 1,
360 /* If a single color should be written to all render targets, this
361 * register is written. No FRAG_RESULT_DATAn will be written.
363 FRAG_RESULT_COLOR
= 2,
365 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
366 * or ARB_fragment_program fragment.color[n]) color results. If
367 * any are written, FRAG_RESULT_COLOR will not be written.
369 FRAG_RESULT_DATA0
= 3,
370 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
375 * Indexes for all renderbuffers
379 /* the four standard color buffers */
387 /* optional aux buffer */
389 /* generic renderbuffers */
402 * Bit flags for all renderbuffers
404 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
405 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
406 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
407 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
408 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
409 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
410 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
411 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
412 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
413 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
414 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
415 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
416 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
417 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
418 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
419 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
420 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
421 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
422 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
425 * Mask of all the color buffer bits (but not accum).
427 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
428 BUFFER_BIT_BACK_LEFT | \
429 BUFFER_BIT_FRONT_RIGHT | \
430 BUFFER_BIT_BACK_RIGHT | \
432 BUFFER_BIT_COLOR0 | \
433 BUFFER_BIT_COLOR1 | \
434 BUFFER_BIT_COLOR2 | \
435 BUFFER_BIT_COLOR3 | \
436 BUFFER_BIT_COLOR4 | \
437 BUFFER_BIT_COLOR5 | \
438 BUFFER_BIT_COLOR6 | \
443 * Framebuffer configuration (aka visual / pixelformat)
444 * Note: some of these fields should be boolean, but it appears that
445 * code in drivers/dri/common/util.c requires int-sized fields.
451 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
452 GLuint doubleBufferMode
;
455 GLboolean haveAccumBuffer
;
456 GLboolean haveDepthBuffer
;
457 GLboolean haveStencilBuffer
;
459 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
460 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
461 GLint rgbBits
; /* total bits for rgb */
462 GLint indexBits
; /* total bits for colorindex */
464 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
472 /* EXT_visual_rating / GLX 1.2 */
475 /* EXT_visual_info / GLX 1.2 */
476 GLint transparentPixel
;
477 /* colors are floats scaled to ints */
478 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
479 GLint transparentIndex
;
481 /* ARB_multisample / SGIS_multisample */
485 /* SGIX_pbuffer / GLX 1.3 */
486 GLint maxPbufferWidth
;
487 GLint maxPbufferHeight
;
488 GLint maxPbufferPixels
;
489 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
490 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
492 /* OML_swap_method */
495 /* EXT_texture_from_pixmap */
496 GLint bindToTextureRgb
;
497 GLint bindToTextureRgba
;
498 GLint bindToMipmapTexture
;
499 GLint bindToTextureTargets
;
505 * \name Bit flags used for updating material values.
508 #define MAT_ATTRIB_FRONT_AMBIENT 0
509 #define MAT_ATTRIB_BACK_AMBIENT 1
510 #define MAT_ATTRIB_FRONT_DIFFUSE 2
511 #define MAT_ATTRIB_BACK_DIFFUSE 3
512 #define MAT_ATTRIB_FRONT_SPECULAR 4
513 #define MAT_ATTRIB_BACK_SPECULAR 5
514 #define MAT_ATTRIB_FRONT_EMISSION 6
515 #define MAT_ATTRIB_BACK_EMISSION 7
516 #define MAT_ATTRIB_FRONT_SHININESS 8
517 #define MAT_ATTRIB_BACK_SHININESS 9
518 #define MAT_ATTRIB_FRONT_INDEXES 10
519 #define MAT_ATTRIB_BACK_INDEXES 11
520 #define MAT_ATTRIB_MAX 12
522 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
523 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
524 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
525 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
526 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
527 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
529 #define MAT_INDEX_AMBIENT 0
530 #define MAT_INDEX_DIFFUSE 1
531 #define MAT_INDEX_SPECULAR 2
533 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
534 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
535 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
536 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
537 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
538 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
539 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
540 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
541 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
542 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
543 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
544 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
547 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
548 MAT_BIT_FRONT_AMBIENT | \
549 MAT_BIT_FRONT_DIFFUSE | \
550 MAT_BIT_FRONT_SPECULAR | \
551 MAT_BIT_FRONT_SHININESS | \
552 MAT_BIT_FRONT_INDEXES)
554 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
555 MAT_BIT_BACK_AMBIENT | \
556 MAT_BIT_BACK_DIFFUSE | \
557 MAT_BIT_BACK_SPECULAR | \
558 MAT_BIT_BACK_SHININESS | \
559 MAT_BIT_BACK_INDEXES)
561 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
565 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
566 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
569 * Material shininess lookup table.
573 struct gl_shine_tab
*next
, *prev
;
574 GLfloat tab
[SHINE_TABLE_SIZE
+1];
581 * Light source state.
585 struct gl_light
*next
; /**< double linked list with sentinel */
586 struct gl_light
*prev
;
588 GLfloat Ambient
[4]; /**< ambient color */
589 GLfloat Diffuse
[4]; /**< diffuse color */
590 GLfloat Specular
[4]; /**< specular color */
591 GLfloat EyePosition
[4]; /**< position in eye coordinates */
592 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
593 GLfloat SpotExponent
;
594 GLfloat SpotCutoff
; /**< in degrees */
595 GLfloat _CosCutoffNeg
; /**< = cos(SpotCutoff) */
596 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
597 GLfloat ConstantAttenuation
;
598 GLfloat LinearAttenuation
;
599 GLfloat QuadraticAttenuation
;
600 GLboolean Enabled
; /**< On/off flag */
603 * \name Derived fields
606 GLbitfield _Flags
; /**< State */
608 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
609 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
610 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
611 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
612 GLfloat _VP_inf_spot_attenuation
;
614 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
615 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
616 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
617 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
627 GLfloat Ambient
[4]; /**< ambient color */
628 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
629 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
630 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
631 * or GL_SEPARATE_SPECULAR_COLOR */
640 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
645 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
647 struct gl_accum_attrib
649 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
654 * Used for storing clear color, texture border color, etc.
655 * The float values are typically unclamped.
666 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
668 struct gl_colorbuffer_attrib
670 GLuint ClearIndex
; /**< Index for glClear */
671 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
672 GLuint IndexMask
; /**< Color index write mask */
673 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
675 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
678 * \name alpha testing
681 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
682 GLenum AlphaFunc
; /**< Alpha test function */
683 GLfloat AlphaRefUnclamped
;
684 GLclampf AlphaRef
; /**< Alpha reference value */
691 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
693 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
694 * control, only on the fixed-pointness of the render target.
695 * The query does however depend on fragment color clamping.
697 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
698 GLfloat BlendColor
[4]; /**< Blending color */
702 GLenum SrcRGB
; /**< RGB blend source term */
703 GLenum DstRGB
; /**< RGB blend dest term */
704 GLenum SrcA
; /**< Alpha blend source term */
705 GLenum DstA
; /**< Alpha blend dest term */
706 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
707 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
708 } Blend
[MAX_DRAW_BUFFERS
];
709 /** Are the blend func terms currently different for each buffer/target? */
710 GLboolean _BlendFuncPerBuffer
;
711 /** Are the blend equations currently different for each buffer/target? */
712 GLboolean _BlendEquationPerBuffer
;
719 GLenum LogicOp
; /**< Logic operator */
720 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
721 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
724 GLboolean DitherFlag
; /**< Dither enable flag */
726 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
727 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
728 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
729 GLboolean _ClampReadColor
; /** < with GL_FIXED_ONLY_ARB resolved */
734 * Current attribute group (GL_CURRENT_BIT).
736 struct gl_current_attrib
739 * \name Current vertex attributes.
740 * \note Values are valid only after FLUSH_VERTICES has been called.
741 * \note Index and Edgeflag current values are stored as floats in the
742 * SIX and SEVEN attribute slots.
744 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
747 * \name Current raster position attributes (always valid).
748 * \note This set of attributes is very similar to the SWvertex struct.
751 GLfloat RasterPos
[4];
752 GLfloat RasterDistance
;
753 GLfloat RasterColor
[4];
754 GLfloat RasterSecondaryColor
[4];
755 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
756 GLboolean RasterPosValid
;
762 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
764 struct gl_depthbuffer_attrib
766 GLenum Func
; /**< Function for depth buffer compare */
767 GLclampd Clear
; /**< Value to clear depth buffer to */
768 GLboolean Test
; /**< Depth buffering enabled flag */
769 GLboolean Mask
; /**< Depth buffer writable? */
770 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
771 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
776 * Evaluator attribute group (GL_EVAL_BIT).
778 struct gl_eval_attrib
784 GLboolean Map1Color4
;
786 GLboolean Map1Normal
;
787 GLboolean Map1TextureCoord1
;
788 GLboolean Map1TextureCoord2
;
789 GLboolean Map1TextureCoord3
;
790 GLboolean Map1TextureCoord4
;
791 GLboolean Map1Vertex3
;
792 GLboolean Map1Vertex4
;
793 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
794 GLboolean Map2Color4
;
796 GLboolean Map2Normal
;
797 GLboolean Map2TextureCoord1
;
798 GLboolean Map2TextureCoord2
;
799 GLboolean Map2TextureCoord3
;
800 GLboolean Map2TextureCoord4
;
801 GLboolean Map2Vertex3
;
802 GLboolean Map2Vertex4
;
803 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
804 GLboolean AutoNormal
;
808 * \name Map Grid endpoints and divisions and calculated du values
812 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
813 GLint MapGrid2un
, MapGrid2vn
;
814 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
815 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
821 * Fog attribute group (GL_FOG_BIT).
825 GLboolean Enabled
; /**< Fog enabled flag */
826 GLfloat ColorUnclamped
[4]; /**< Fog color */
827 GLfloat Color
[4]; /**< Fog color */
828 GLfloat Density
; /**< Density >= 0.0 */
829 GLfloat Start
; /**< Start distance in eye coords */
830 GLfloat End
; /**< End distance in eye coords */
831 GLfloat Index
; /**< Fog index */
832 GLenum Mode
; /**< Fog mode */
833 GLboolean ColorSumEnabled
;
834 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
835 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
836 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
841 * \brief Layout qualifiers for gl_FragDepth.
843 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
844 * a layout qualifier.
846 * \see enum ir_depth_layout
848 enum gl_frag_depth_layout
{
849 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
850 FRAG_DEPTH_LAYOUT_ANY
,
851 FRAG_DEPTH_LAYOUT_GREATER
,
852 FRAG_DEPTH_LAYOUT_LESS
,
853 FRAG_DEPTH_LAYOUT_UNCHANGED
858 * Hint attribute group (GL_HINT_BIT).
860 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
862 struct gl_hint_attrib
864 GLenum PerspectiveCorrection
;
867 GLenum PolygonSmooth
;
869 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
870 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
871 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
872 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
879 #define LIGHT_SPOT 0x1
880 #define LIGHT_LOCAL_VIEWER 0x2
881 #define LIGHT_POSITIONAL 0x4
882 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
887 * Lighting attribute group (GL_LIGHT_BIT).
889 struct gl_light_attrib
891 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
892 struct gl_lightmodel Model
; /**< Lighting model */
895 * Must flush FLUSH_VERTICES before referencing:
898 struct gl_material Material
; /**< Includes front & back values */
901 GLboolean Enabled
; /**< Lighting enabled flag */
902 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
903 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
904 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
905 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
906 GLboolean ColorMaterialEnabled
;
907 GLenum ClampVertexColor
;
908 GLboolean _ClampVertexColor
;
910 struct gl_light EnabledList
; /**< List sentinel */
913 * Derived state for optimizations:
916 GLboolean _NeedEyeCoords
;
917 GLboolean _NeedVertices
; /**< Use fast shader? */
918 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
919 GLfloat _BaseColor
[2][3];
925 * Line attribute group (GL_LINE_BIT).
927 struct gl_line_attrib
929 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
930 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
931 GLushort StipplePattern
; /**< Stipple pattern */
932 GLint StippleFactor
; /**< Stipple repeat factor */
933 GLfloat Width
; /**< Line width */
938 * Display list attribute group (GL_LIST_BIT).
940 struct gl_list_attrib
947 * Multisample attribute group (GL_MULTISAMPLE_BIT).
949 struct gl_multisample_attrib
952 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
953 GLboolean SampleAlphaToCoverage
;
954 GLboolean SampleAlphaToOne
;
955 GLboolean SampleCoverage
;
956 GLfloat SampleCoverageValue
;
957 GLboolean SampleCoverageInvert
;
962 * A pixelmap (see glPixelMap)
967 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
968 GLubyte Map8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
973 * Collection of all pixelmaps
977 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
978 struct gl_pixelmap GtoG
;
979 struct gl_pixelmap BtoB
;
980 struct gl_pixelmap AtoA
;
981 struct gl_pixelmap ItoR
;
982 struct gl_pixelmap ItoG
;
983 struct gl_pixelmap ItoB
;
984 struct gl_pixelmap ItoA
;
985 struct gl_pixelmap ItoI
;
986 struct gl_pixelmap StoS
;
991 * Pixel attribute group (GL_PIXEL_MODE_BIT).
993 struct gl_pixel_attrib
995 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
997 /*--- Begin Pixel Transfer State ---*/
998 /* Fields are in the order in which they're applied... */
1000 /** Scale & Bias (index shift, offset) */
1002 GLfloat RedBias
, RedScale
;
1003 GLfloat GreenBias
, GreenScale
;
1004 GLfloat BlueBias
, BlueScale
;
1005 GLfloat AlphaBias
, AlphaScale
;
1006 GLfloat DepthBias
, DepthScale
;
1007 GLint IndexShift
, IndexOffset
;
1011 /* Note: actual pixel maps are not part of this attrib group */
1012 GLboolean MapColorFlag
;
1013 GLboolean MapStencilFlag
;
1015 /*--- End Pixel Transfer State ---*/
1018 GLfloat ZoomX
, ZoomY
;
1023 * Point attribute group (GL_POINT_BIT).
1025 struct gl_point_attrib
1027 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
1028 GLfloat Size
; /**< User-specified point size */
1029 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
1030 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
1031 GLfloat Threshold
; /**< GL_EXT_point_parameters */
1032 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
1033 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
1034 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
1035 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
1036 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
1041 * Polygon attribute group (GL_POLYGON_BIT).
1043 struct gl_polygon_attrib
1045 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
1046 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1047 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1048 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1049 GLboolean CullFlag
; /**< Culling on/off flag */
1050 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1051 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1052 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1053 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1054 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1055 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1056 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1057 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1062 * Scissor attributes (GL_SCISSOR_BIT).
1064 struct gl_scissor_attrib
1066 GLboolean Enabled
; /**< Scissor test enabled? */
1067 GLint X
, Y
; /**< Lower left corner of box */
1068 GLsizei Width
, Height
; /**< Size of box */
1073 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1075 * Three sets of stencil data are tracked so that OpenGL 2.0,
1076 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1077 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1078 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1079 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1080 * GL_EXT_stencil_two_side GL_BACK state.
1082 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1083 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1085 * The derived value \c _TestTwoSide is set when the front-face and back-face
1086 * stencil state are different.
1088 struct gl_stencil_attrib
1090 GLboolean Enabled
; /**< Enabled flag */
1091 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1092 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1093 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1094 GLboolean _TestTwoSide
;
1095 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1096 GLenum Function
[3]; /**< Stencil function */
1097 GLenum FailFunc
[3]; /**< Fail function */
1098 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1099 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1100 GLint Ref
[3]; /**< Reference value */
1101 GLuint ValueMask
[3]; /**< Value mask */
1102 GLuint WriteMask
[3]; /**< Write mask */
1103 GLuint Clear
; /**< Clear value */
1108 * An index for each type of texture object. These correspond to the GL
1109 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1110 * Note: the order is from highest priority to lowest priority.
1123 * Bit flags for each type of texture object
1124 * Used for Texture.Unit[]._ReallyEnabled flags.
1127 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1128 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1129 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1130 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1135 * TexGenEnabled flags.
1142 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1147 * Bit flag versions of the corresponding GL_ constants.
1150 #define TEXGEN_SPHERE_MAP 0x1
1151 #define TEXGEN_OBJ_LINEAR 0x2
1152 #define TEXGEN_EYE_LINEAR 0x4
1153 #define TEXGEN_REFLECTION_MAP_NV 0x8
1154 #define TEXGEN_NORMAL_MAP_NV 0x10
1156 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1157 TEXGEN_REFLECTION_MAP_NV | \
1158 TEXGEN_NORMAL_MAP_NV)
1159 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1160 TEXGEN_REFLECTION_MAP_NV | \
1161 TEXGEN_NORMAL_MAP_NV | \
1167 /** Tex-gen enabled for texture unit? */
1168 #define ENABLE_TEXGEN(unit) (1 << (unit))
1170 /** Non-identity texture matrix for texture unit? */
1171 #define ENABLE_TEXMAT(unit) (1 << (unit))
1175 * Texture image state. Drivers will typically create a subclass of this
1176 * with extra fields for memory buffers, etc.
1178 struct gl_texture_image
1180 GLint InternalFormat
; /**< Internal format as given by the user */
1181 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1182 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1183 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1184 * GL_DEPTH_STENCIL_EXT only. Used for
1185 * choosing TexEnv arithmetic.
1187 gl_format TexFormat
; /**< The actual texture memory format */
1189 GLuint Border
; /**< 0 or 1 */
1190 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1191 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1192 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1193 GLuint Width2
; /**< = Width - 2*Border */
1194 GLuint Height2
; /**< = Height - 2*Border */
1195 GLuint Depth2
; /**< = Depth - 2*Border */
1196 GLuint WidthLog2
; /**< = log2(Width2) */
1197 GLuint HeightLog2
; /**< = log2(Height2) */
1198 GLuint DepthLog2
; /**< = log2(Depth2) */
1199 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1201 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1202 GLuint Level
; /**< Which mipmap level am I? */
1203 /** Cube map face: index into gl_texture_object::Image[] array */
1209 * Indexes for cube map faces.
1223 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1224 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1226 struct gl_sampler_object
1231 GLenum WrapS
; /**< S-axis texture image wrap mode */
1232 GLenum WrapT
; /**< T-axis texture image wrap mode */
1233 GLenum WrapR
; /**< R-axis texture image wrap mode */
1234 GLenum MinFilter
; /**< minification filter */
1235 GLenum MagFilter
; /**< magnification filter */
1236 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1237 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1238 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1239 GLfloat LodBias
; /**< OpenGL 1.4 */
1240 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1246 * Texture object state. Contains the array of mipmap images, border color,
1247 * wrap modes, filter modes, and shadow/texcompare state.
1249 struct gl_texture_object
1251 _glthread_Mutex Mutex
; /**< for thread safety */
1252 GLint RefCount
; /**< reference count */
1253 GLuint Name
; /**< the user-visible texture object ID */
1254 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1256 struct gl_sampler_object Sampler
;
1258 GLfloat Priority
; /**< in [0,1] */
1259 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1260 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1261 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1262 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1263 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1264 GLboolean _Complete
; /**< Is texture object complete? */
1265 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1266 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1267 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1269 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1270 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1274 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1275 #define MAX_COMBINER_TERMS 4
1279 * Texture combine environment state.
1281 struct gl_tex_env_combine_state
1283 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1284 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1285 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1286 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1287 GLenum SourceA
[MAX_COMBINER_TERMS
];
1288 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1289 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1290 GLenum OperandA
[MAX_COMBINER_TERMS
];
1291 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1292 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1293 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1294 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1299 * Texture coord generation state.
1303 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1304 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1305 GLfloat ObjectPlane
[4];
1306 GLfloat EyePlane
[4];
1311 * Texture unit state. Contains enable flags, texture environment/function/
1312 * combiners, texgen state, and pointers to current texture objects.
1314 struct gl_texture_unit
1316 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1317 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1319 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1320 GLclampf EnvColor
[4];
1321 GLfloat EnvColorUnclamped
[4];
1323 struct gl_texgen GenS
;
1324 struct gl_texgen GenT
;
1325 struct gl_texgen GenR
;
1326 struct gl_texgen GenQ
;
1327 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1328 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1330 GLfloat LodBias
; /**< for biasing mipmap levels */
1332 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1335 * \name GL_EXT_texture_env_combine
1337 struct gl_tex_env_combine_state Combine
;
1340 * Derived state based on \c EnvMode and the \c BaseFormat of the
1341 * currently enabled texture.
1343 struct gl_tex_env_combine_state _EnvMode
;
1346 * Currently enabled combiner state. This will point to either
1347 * \c Combine or \c _EnvMode.
1349 struct gl_tex_env_combine_state
*_CurrentCombine
;
1351 /** Current texture object pointers */
1352 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1354 /** Points to highest priority, complete and enabled texture object */
1355 struct gl_texture_object
*_Current
;
1360 * Texture attribute group (GL_TEXTURE_BIT).
1362 struct gl_texture_attrib
1364 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1365 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1367 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1369 /** Texture units/samplers used by vertex or fragment texturing */
1370 GLbitfield _EnabledUnits
;
1372 /** Texture coord units/sets used for fragment texturing */
1373 GLbitfield _EnabledCoordUnits
;
1375 /** Texture coord units that have texgen enabled */
1376 GLbitfield _TexGenEnabled
;
1378 /** Texture coord units that have non-identity matrices */
1379 GLbitfield _TexMatEnabled
;
1381 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1382 GLbitfield _GenFlags
;
1387 * Data structure representing a single clip plane (e.g. one of the elements
1388 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1390 typedef GLfloat gl_clip_plane
[4];
1394 * Transformation attribute group (GL_TRANSFORM_BIT).
1396 struct gl_transform_attrib
1398 GLenum MatrixMode
; /**< Matrix mode */
1399 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1400 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1401 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1402 GLboolean Normalize
; /**< Normalize all normals? */
1403 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1404 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1406 GLfloat CullEyePos
[4];
1407 GLfloat CullObjPos
[4];
1412 * Viewport attribute group (GL_VIEWPORT_BIT).
1414 struct gl_viewport_attrib
1416 GLint X
, Y
; /**< position */
1417 GLsizei Width
, Height
; /**< size */
1418 GLfloat Near
, Far
; /**< Depth buffer range */
1419 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1424 * GL_ARB_vertex/pixel_buffer_object buffer object
1426 struct gl_buffer_object
1428 _glthread_Mutex Mutex
;
1431 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1432 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1433 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1434 /** Fields describing a mapped buffer */
1436 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1437 GLvoid
*Pointer
; /**< User-space address of mapping */
1438 GLintptr Offset
; /**< Mapped offset */
1439 GLsizeiptr Length
; /**< Mapped length */
1441 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1442 GLboolean Written
; /**< Ever written to? (for debugging) */
1443 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1448 * Client pixel packing/unpacking attributes
1450 struct gl_pixelstore_attrib
1458 GLboolean SwapBytes
;
1460 GLboolean Invert
; /**< GL_MESA_pack_invert */
1461 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1466 * Client vertex array attributes
1468 struct gl_client_array
1470 GLint Size
; /**< components per element (1,2,3,4) */
1471 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1472 GLsizei Stride
; /**< user-specified stride */
1473 GLsizei StrideB
; /**< actual stride in bytes */
1474 const GLubyte
*Ptr
; /**< Points to array data */
1475 GLboolean Enabled
; /**< Enabled flag is a boolean */
1476 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1477 GLboolean Integer
; /**< Integer-valued? */
1478 GLuint _ElementSize
; /**< size of each element in bytes */
1480 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1481 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1486 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1487 * extension, but a nice encapsulation in any case.
1489 struct gl_array_object
1491 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1495 _glthread_Mutex Mutex
;
1498 * Does the VAO use ARB semantics or Apple semantics?
1500 * There are several ways in which ARB_vertex_array_object and
1501 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1504 * - ARB VAOs require that all array data be sourced from vertex buffer
1505 * objects, but Apple VAOs do not.
1507 * - ARB VAOs require that names come from GenVertexArrays.
1509 * This flag notes which behavior governs this VAO.
1511 GLboolean ARBsemantics
;
1514 * Has this array object been bound?
1518 /** Vertex attribute arrays */
1519 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1521 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1522 GLbitfield64 _Enabled
;
1525 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1526 * we can determine the max legal (in bounds) glDrawElements array index.
1530 struct gl_buffer_object
*ElementArrayBufferObj
;
1535 * Vertex array state
1537 struct gl_array_attrib
1539 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1540 struct gl_array_object
*ArrayObj
;
1542 /** The default vertex array object */
1543 struct gl_array_object
*DefaultArrayObj
;
1545 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1546 struct _mesa_HashTable
*Objects
;
1548 GLint ActiveTexture
; /**< Client Active Texture */
1549 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1550 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1552 GLbitfield64 NewState
; /**< mask of VERT_BIT_* values */
1553 GLboolean RebindArrays
; /**< whether the VBO module should rebind arrays */
1555 /* GL_ARB_vertex_buffer_object */
1556 struct gl_buffer_object
*ArrayBufferObj
;
1561 * Feedback buffer state
1566 GLbitfield _Mask
; /**< FB_* bits */
1574 * Selection buffer state
1578 GLuint
*Buffer
; /**< selection buffer */
1579 GLuint BufferSize
; /**< size of the selection buffer */
1580 GLuint BufferCount
; /**< number of values in the selection buffer */
1581 GLuint Hits
; /**< number of records in the selection buffer */
1582 GLuint NameStackDepth
; /**< name stack depth */
1583 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1584 GLboolean HitFlag
; /**< hit flag */
1585 GLfloat HitMinZ
; /**< minimum hit depth */
1586 GLfloat HitMaxZ
; /**< maximum hit depth */
1591 * 1-D Evaluator control points
1595 GLuint Order
; /**< Number of control points */
1596 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1597 GLfloat
*Points
; /**< Points to contiguous control points */
1602 * 2-D Evaluator control points
1606 GLuint Uorder
; /**< Number of control points in U dimension */
1607 GLuint Vorder
; /**< Number of control points in V dimension */
1610 GLfloat
*Points
; /**< Points to contiguous control points */
1615 * All evaluator control point state
1617 struct gl_evaluators
1623 struct gl_1d_map Map1Vertex3
;
1624 struct gl_1d_map Map1Vertex4
;
1625 struct gl_1d_map Map1Index
;
1626 struct gl_1d_map Map1Color4
;
1627 struct gl_1d_map Map1Normal
;
1628 struct gl_1d_map Map1Texture1
;
1629 struct gl_1d_map Map1Texture2
;
1630 struct gl_1d_map Map1Texture3
;
1631 struct gl_1d_map Map1Texture4
;
1632 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1639 struct gl_2d_map Map2Vertex3
;
1640 struct gl_2d_map Map2Vertex4
;
1641 struct gl_2d_map Map2Index
;
1642 struct gl_2d_map Map2Color4
;
1643 struct gl_2d_map Map2Normal
;
1644 struct gl_2d_map Map2Texture1
;
1645 struct gl_2d_map Map2Texture2
;
1646 struct gl_2d_map Map2Texture3
;
1647 struct gl_2d_map Map2Texture4
;
1648 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1654 * Names of the various vertex/fragment program register files, etc.
1656 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1657 * All values should fit in a 4-bit field.
1659 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1660 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1661 * be "uniform" variables since they can only be set outside glBegin/End.
1662 * They're also all stored in the same Parameters array.
1666 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1667 PROGRAM_INPUT
, /**< machine->Inputs[] */
1668 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1669 PROGRAM_VARYING
, /**< machine->Inputs[]/Outputs[] */
1670 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1671 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1672 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1673 PROGRAM_NAMED_PARAM
, /**< gl_program->Parameters[] */
1674 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1675 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1676 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1677 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1678 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1679 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1680 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1686 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1687 * one of these values.
1691 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1692 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1693 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1694 SYSTEM_VALUE_MAX
/**< Number of values */
1699 * The possible interpolation qualifiers that can be applied to a fragment
1700 * shader input in GLSL.
1702 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1703 * gl_fragment_program data structure to 0 causes the default behavior.
1705 enum glsl_interp_qualifier
1707 INTERP_QUALIFIER_NONE
= 0,
1708 INTERP_QUALIFIER_SMOOTH
,
1709 INTERP_QUALIFIER_FLAT
,
1710 INTERP_QUALIFIER_NOPERSPECTIVE
1714 /** Vertex and fragment instructions */
1715 struct prog_instruction
;
1716 struct gl_program_parameter_list
;
1717 struct gl_uniform_list
;
1720 * Base class for any kind of program object
1725 GLubyte
*String
; /**< Null-terminated program text */
1727 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1728 GLenum Format
; /**< String encoding format */
1731 struct prog_instruction
*Instructions
;
1733 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1734 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1735 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1736 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1737 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1738 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1739 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1740 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1743 /** Named parameters, constants, etc. from program text */
1744 struct gl_program_parameter_list
*Parameters
;
1745 /** Numbered local parameters */
1746 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1748 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1749 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1751 /** Bitmask of which register files are read/written with indirect
1752 * addressing. Mask of (1 << PROGRAM_x) bits.
1754 GLbitfield IndirectRegisterFiles
;
1756 /** Logical counts */
1758 GLuint NumInstructions
;
1759 GLuint NumTemporaries
;
1760 GLuint NumParameters
;
1761 GLuint NumAttributes
;
1762 GLuint NumAddressRegs
;
1763 GLuint NumAluInstructions
;
1764 GLuint NumTexInstructions
;
1765 GLuint NumTexIndirections
;
1767 /** Native, actual h/w counts */
1769 GLuint NumNativeInstructions
;
1770 GLuint NumNativeTemporaries
;
1771 GLuint NumNativeParameters
;
1772 GLuint NumNativeAttributes
;
1773 GLuint NumNativeAddressRegs
;
1774 GLuint NumNativeAluInstructions
;
1775 GLuint NumNativeTexInstructions
;
1776 GLuint NumNativeTexIndirections
;
1781 /** Vertex program object */
1782 struct gl_vertex_program
1784 struct gl_program Base
; /**< base class */
1785 GLboolean IsNVProgram
; /**< is this a GL_NV_vertex_program program? */
1786 GLboolean IsPositionInvariant
;
1787 GLboolean UsesClipDistance
;
1791 /** Fragment program object */
1792 struct gl_fragment_program
1794 struct gl_program Base
; /**< base class */
1795 GLboolean UsesKill
; /**< shader uses KIL instruction */
1796 enum gl_frag_depth_layout FragDepthLayout
;
1799 * GLSL interpolation qualifier associated with each fragment shader input.
1800 * For inputs that do not have an interpolation qualifier specified in
1801 * GLSL, the value is INTERP_QUALIFIER_NONE.
1803 enum glsl_interp_qualifier InterpQualifier
[FRAG_ATTRIB_MAX
];
1808 * State common to vertex and fragment programs.
1810 struct gl_program_state
1812 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1813 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1818 * Context state for vertex programs.
1820 struct gl_vertex_program_state
1822 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1823 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1824 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1825 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1826 /** Computed two sided lighting for fixed function/programs. */
1827 GLboolean _TwoSideEnabled
;
1828 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1830 /** Currently enabled and valid vertex program (including internal
1831 * programs, user-defined vertex programs and GLSL vertex shaders).
1832 * This is the program we must use when rendering.
1834 struct gl_vertex_program
*_Current
;
1836 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1838 /* For GL_NV_vertex_program only: */
1839 GLenum TrackMatrix
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1840 GLenum TrackMatrixTransform
[MAX_PROGRAM_ENV_PARAMS
/ 4];
1842 /** Cache of fixed-function programs */
1843 struct gl_program_cache
*Cache
;
1845 GLboolean _Overriden
;
1850 * Context state for fragment programs.
1852 struct gl_fragment_program_state
1854 GLboolean Enabled
; /**< User-set fragment program enable flag */
1855 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1856 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
1858 /** Currently enabled and valid fragment program (including internal
1859 * programs, user-defined fragment programs and GLSL fragment shaders).
1860 * This is the program we must use when rendering.
1862 struct gl_fragment_program
*_Current
;
1864 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1866 /** Cache of fixed-function programs */
1867 struct gl_program_cache
*Cache
;
1870 /** Set by #pragma directives */
1871 struct gl_sl_pragmas
1873 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
1874 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
1875 GLboolean Optimize
; /**< defaults on */
1876 GLboolean Debug
; /**< defaults off */
1881 * A GLSL vertex or fragment shader object.
1885 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
1886 GLuint Name
; /**< AKA the handle */
1887 GLint RefCount
; /**< Reference count */
1888 GLboolean DeletePending
;
1889 GLboolean CompileStatus
;
1890 const GLchar
*Source
; /**< Source code string */
1891 GLuint SourceChecksum
; /**< for debug/logging purposes */
1892 struct gl_program
*Program
; /**< Post-compile assembly code */
1894 struct gl_sl_pragmas Pragmas
;
1896 unsigned Version
; /**< GLSL version used for linking */
1899 * \name Sampler tracking
1901 * \note Each of these fields is only set post-linking.
1904 unsigned num_samplers
; /**< Number of samplers used by this shader. */
1905 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
1906 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
1910 * Number of uniform components used by this shader.
1912 * This field is only set post-linking.
1914 unsigned num_uniform_components
;
1916 struct exec_list
*ir
;
1917 struct glsl_symbol_table
*symbols
;
1919 /** Shaders containing built-in functions that are used for linking. */
1920 struct gl_shader
*builtins_to_link
[16];
1921 unsigned num_builtins_to_link
;
1926 * A GLSL program object.
1927 * Basically a linked collection of vertex and fragment shaders.
1929 struct gl_shader_program
1931 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
1932 GLuint Name
; /**< aka handle or ID */
1933 GLint RefCount
; /**< Reference count */
1934 GLboolean DeletePending
;
1937 * Flags that the linker should not reject the program if it lacks
1938 * a vertex or fragment shader. GLES2 doesn't allow separate
1939 * shader objects, and would reject them. However, we internally
1940 * build separate shader objects for fixed function programs, which
1941 * we use for drivers/common/meta.c and for handling
1942 * _mesa_update_state with no program bound (for example in
1945 GLboolean InternalSeparateShader
;
1947 GLuint NumShaders
; /**< number of attached shaders */
1948 struct gl_shader
**Shaders
; /**< List of attached the shaders */
1951 * User-defined attribute bindings
1953 * These are set via \c glBindAttribLocation and are used to direct the
1954 * GLSL linker. These are \b not the values used in the compiled shader,
1955 * and they are \b not the values returned by \c glGetAttribLocation.
1957 struct string_to_uint_map
*AttributeBindings
;
1960 * User-defined fragment data bindings
1962 * These are set via \c glBindFragDataLocation and are used to direct the
1963 * GLSL linker. These are \b not the values used in the compiled shader,
1964 * and they are \b not the values returned by \c glGetFragDataLocation.
1966 struct string_to_uint_map
*FragDataBindings
;
1968 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
1969 enum gl_frag_depth_layout FragDepthLayout
;
1971 /** Vertex shader state - copied into gl_vertex_program at link time */
1973 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
1974 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
1975 0 if not present. */
1978 /* post-link info: */
1979 unsigned NumUserUniformStorage
;
1980 struct gl_uniform_storage
*UniformStorage
;
1983 * Map of active uniform names to locations
1985 * Maps any active uniform that is not an array element to a location.
1986 * Each active uniform, including individual structure members will appear
1987 * in this map. This roughly corresponds to the set of names that would be
1988 * enumerated by \c glGetActiveUniform.
1990 struct string_to_uint_map
*UniformHash
;
1993 * Map from sampler unit to texture unit (set by glUniform1i())
1995 * A sampler unit is associated with each sampler uniform by the linker.
1996 * The sampler unit associated with each uniform is stored in the
1997 * \c gl_uniform_storage::sampler field.
1999 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2000 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2001 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2003 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2004 GLboolean Validated
;
2005 GLboolean _Used
; /**< Ever used for drawing? */
2008 unsigned Version
; /**< GLSL version used for linking */
2011 * Per-stage shaders resulting from the first stage of linking.
2013 * Set of linked shaders for this program. The array is accessed using the
2014 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2017 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2021 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2022 #define GLSL_LOG 0x2 /**< Write shaders to files */
2023 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2024 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2025 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2026 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2027 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2028 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2032 * Context state for GLSL vertex/fragment shaders.
2034 struct gl_shader_state
2037 * Programs used for rendering
2039 * There is a separate program set for each shader stage. If
2040 * GL_EXT_separate_shader_objects is not supported, each of these must point
2041 * to \c NULL or to the same program.
2043 struct gl_shader_program
*CurrentVertexProgram
;
2044 struct gl_shader_program
*CurrentFragmentProgram
;
2046 struct gl_shader_program
*_CurrentFragmentProgram
;
2049 * Program used by glUniform calls.
2051 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2053 struct gl_shader_program
*ActiveProgram
;
2055 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2059 * Compiler options for a single GLSL shaders type
2061 struct gl_shader_compiler_options
2063 /** Driver-selectable options: */
2064 GLboolean EmitCondCodes
; /**< Use condition codes? */
2065 GLboolean EmitNVTempInitialization
; /**< 0-fill NV temp registers */
2066 GLboolean EmitNoLoops
;
2067 GLboolean EmitNoFunctions
;
2068 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2069 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2070 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2071 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2072 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2075 * \name Forms of indirect addressing the driver cannot do.
2078 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2079 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2080 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2081 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2084 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2085 GLuint MaxUnrollIterations
;
2087 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2091 * State which can be shared by multiple contexts:
2093 struct gl_shared_state
2095 _glthread_Mutex Mutex
; /**< for thread safety */
2096 GLint RefCount
; /**< Reference count */
2097 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2098 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2100 /** Default texture objects (shared by all texture units) */
2101 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2103 /** Fallback texture used when a bound texture is incomplete */
2104 struct gl_texture_object
*FallbackTex
;
2107 * \name Thread safety and statechange notification for texture
2110 * \todo Improve the granularity of locking.
2113 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2114 GLuint TextureStateStamp
; /**< state notification for shared tex */
2117 /** Default buffer object for vertex arrays that aren't in VBOs */
2118 struct gl_buffer_object
*NullBufferObj
;
2121 * \name Vertex/geometry/fragment programs
2124 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2125 struct gl_vertex_program
*DefaultVertexProgram
;
2126 struct gl_fragment_program
*DefaultFragmentProgram
;
2129 struct _mesa_HashTable
*BufferObjects
;
2131 /** Table of both gl_shader and gl_shader_program objects */
2132 struct _mesa_HashTable
*ShaderObjects
;
2134 /* GL_EXT_framebuffer_object */
2135 struct _mesa_HashTable
*RenderBuffers
;
2136 struct _mesa_HashTable
*FrameBuffers
;
2138 void *DriverData
; /**< Device driver shared state */
2144 * Renderbuffers represent drawing surfaces such as color, depth and/or
2145 * stencil. A framebuffer object has a set of renderbuffers.
2146 * Drivers will typically derive subclasses of this type.
2148 struct gl_renderbuffer
2150 _glthread_Mutex Mutex
; /**< for thread safety */
2151 GLuint ClassID
; /**< Useful for drivers */
2154 GLuint Width
, Height
;
2155 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2156 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2158 GLenum InternalFormat
; /**< The user-specified format */
2159 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2160 GL_STENCIL_INDEX. */
2161 gl_format Format
; /**< The actual renderbuffer memory format */
2163 /** Delete this renderbuffer */
2164 void (*Delete
)(struct gl_renderbuffer
*rb
);
2166 /** Allocate new storage for this renderbuffer */
2167 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
2168 struct gl_renderbuffer
*rb
,
2169 GLenum internalFormat
,
2170 GLuint width
, GLuint height
);
2175 * A renderbuffer attachment points to either a texture object (and specifies
2176 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2178 struct gl_renderbuffer_attachment
2180 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2184 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2185 * application supplied renderbuffer object.
2187 struct gl_renderbuffer
*Renderbuffer
;
2190 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2191 * supplied texture object.
2193 struct gl_texture_object
*Texture
;
2194 GLuint TextureLevel
; /**< Attached mipmap level. */
2195 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2196 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2197 * and 2D array textures */
2202 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2203 * In C++ terms, think of this as a base class from which device drivers
2204 * will make derived classes.
2206 struct gl_framebuffer
2208 _glthread_Mutex Mutex
; /**< for thread safety */
2210 * If zero, this is a window system framebuffer. If non-zero, this
2211 * is a FBO framebuffer; note that for some devices (i.e. those with
2212 * a natural pixel coordinate system for FBOs that differs from the
2213 * OpenGL/Mesa coordinate system), this means that the viewport,
2214 * polygon face orientation, and polygon stipple will have to be inverted.
2219 GLboolean DeletePending
;
2222 * The framebuffer's visual. Immutable if this is a window system buffer.
2223 * Computed from attachments if user-made FBO.
2225 struct gl_config Visual
;
2227 GLboolean Initialized
;
2229 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2231 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2233 GLint _Xmin
, _Xmax
; /**< inclusive */
2234 GLint _Ymin
, _Ymax
; /**< exclusive */
2237 /** \name Derived Z buffer stuff */
2239 GLuint _DepthMax
; /**< Max depth buffer value */
2240 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2241 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2244 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2247 /** Integer color values */
2248 GLboolean _IntegerColor
;
2250 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2251 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2253 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2254 * attribute group and GL_PIXEL attribute group, respectively.
2256 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2257 GLenum ColorReadBuffer
;
2259 /** Computed from ColorDraw/ReadBuffer above */
2260 GLuint _NumColorDrawBuffers
;
2261 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2262 GLint _ColorReadBufferIndex
; /* -1 = None */
2263 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2264 struct gl_renderbuffer
*_ColorReadBuffer
;
2266 /** Delete this framebuffer */
2267 void (*Delete
)(struct gl_framebuffer
*fb
);
2272 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2276 GLushort RangeMin
; /**< min value exponent */
2277 GLushort RangeMax
; /**< max value exponent */
2278 GLushort Precision
; /**< number of mantissa bits */
2283 * Limits for vertex, geometry and fragment programs/shaders.
2285 struct gl_program_constants
2287 /* logical limits */
2288 GLuint MaxInstructions
;
2289 GLuint MaxAluInstructions
;
2290 GLuint MaxTexInstructions
;
2291 GLuint MaxTexIndirections
;
2294 GLuint MaxAddressRegs
;
2295 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2296 GLuint MaxParameters
;
2297 GLuint MaxLocalParams
;
2298 GLuint MaxEnvParams
;
2299 /* native/hardware limits */
2300 GLuint MaxNativeInstructions
;
2301 GLuint MaxNativeAluInstructions
;
2302 GLuint MaxNativeTexInstructions
;
2303 GLuint MaxNativeTexIndirections
;
2304 GLuint MaxNativeAttribs
;
2305 GLuint MaxNativeTemps
;
2306 GLuint MaxNativeAddressRegs
;
2307 GLuint MaxNativeParameters
;
2309 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2314 * Constants which may be overridden by device driver during context creation
2315 * but are never changed after that.
2319 GLint MaxTextureMbytes
; /**< Max memory per image, in MB */
2320 GLint MaxTextureLevels
; /**< Max mipmap levels. */
2321 GLint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2322 GLint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2323 GLuint MaxTextureCoordUnits
;
2324 GLuint MaxTextureImageUnits
;
2325 GLuint MaxVertexTextureImageUnits
;
2326 GLuint MaxCombinedTextureImageUnits
;
2327 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, ImageUnits) */
2328 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2329 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2331 GLuint MaxArrayLockSize
;
2335 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2336 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2337 GLfloat PointSizeGranularity
;
2338 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2339 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2340 GLfloat LineWidthGranularity
;
2342 GLuint MaxColorTableSize
;
2344 GLuint MaxClipPlanes
;
2346 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2347 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2349 GLuint MaxViewportWidth
, MaxViewportHeight
;
2351 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2352 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2353 GLuint MaxProgramMatrices
;
2354 GLuint MaxProgramMatrixStackDepth
;
2356 /** vertex array / buffer object bounds checking */
2357 GLboolean CheckArrayBounds
;
2359 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2361 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2362 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2363 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2365 /** Number of varying vectors between vertex and fragment shaders */
2368 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2371 * Changes default GLSL extension behavior from "error" to "warn". It's out
2372 * of spec, but it can make some apps work that otherwise wouldn't.
2374 GLboolean ForceGLSLExtensionsWarn
;
2377 * Does the driver support real 32-bit integers? (Otherwise, integers are
2378 * simulated via floats.)
2380 GLboolean NativeIntegers
;
2383 * If the driver supports real 32-bit integers, what integer value should be
2384 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2386 GLuint UniformBooleanTrue
;
2388 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2389 GLbitfield SupportedBumpUnits
;
2391 /** OpenGL version 3.0 */
2392 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2394 /** OpenGL version 3.2 */
2395 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2397 /** GL_EXT_gpu_shader4 */
2398 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2400 /* GL_ARB_robustness */
2401 GLenum ResetStrategy
;
2404 * Whether the implementation strips out and ignores texture borders.
2406 * Many GPU hardware implementations don't support rendering with texture
2407 * borders and mipmapped textures. (Note: not static border color, but the
2408 * old 1-pixel border around each edge). Implementations then have to do
2409 * slow fallbacks to be correct, or just ignore the border and be fast but
2410 * wrong. Setting the flag stripts the border off of TexImage calls,
2411 * providing "fast but wrong" at significantly reduced driver complexity.
2413 * Texture borders are deprecated in GL 3.0.
2415 GLboolean StripTextureBorder
;
2418 * For drivers which can do a better job at eliminating unused varyings
2419 * and uniforms than the GLSL compiler.
2421 * XXX Remove these as soon as a better solution is available.
2423 GLboolean GLSLSkipStrictMaxVaryingLimitCheck
;
2424 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
2429 * Enable flag for each OpenGL extension. Different device drivers will
2430 * enable different extensions at runtime.
2432 struct gl_extensions
2434 GLboolean dummy
; /* don't remove this! */
2435 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2436 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2437 GLboolean ARB_color_buffer_float
;
2438 GLboolean ARB_conservative_depth
;
2439 GLboolean ARB_depth_clamp
;
2440 GLboolean ARB_draw_buffers_blend
;
2441 GLboolean ARB_fragment_program
;
2442 GLboolean ARB_fragment_program_shadow
;
2443 GLboolean ARB_fragment_shader
;
2444 GLboolean ARB_framebuffer_object
;
2445 GLboolean ARB_half_float_pixel
;
2446 GLboolean ARB_half_float_vertex
;
2447 GLboolean ARB_map_buffer_range
;
2448 GLboolean ARB_point_sprite
;
2449 GLboolean ARB_shader_objects
;
2450 GLboolean ARB_shader_stencil_export
;
2451 GLboolean ARB_shader_texture_lod
;
2452 GLboolean ARB_shading_language_100
;
2453 GLboolean ARB_texture_border_clamp
;
2454 GLboolean ARB_texture_cube_map
;
2455 GLboolean ARB_texture_env_combine
;
2456 GLboolean ARB_texture_env_crossbar
;
2457 GLboolean ARB_texture_env_dot3
;
2458 GLboolean ARB_texture_float
;
2459 GLboolean ARB_texture_non_power_of_two
;
2460 GLboolean ARB_texture_storage
;
2461 GLboolean ARB_transpose_matrix
;
2462 GLboolean ARB_vertex_array_object
;
2463 GLboolean ARB_vertex_program
;
2464 GLboolean ARB_vertex_shader
;
2465 GLboolean ARB_window_pos
;
2466 GLboolean EXT_blend_color
;
2467 GLboolean EXT_blend_equation_separate
;
2468 GLboolean EXT_blend_func_separate
;
2469 GLboolean EXT_blend_minmax
;
2470 GLboolean EXT_clip_volume_hint
;
2471 GLboolean EXT_compiled_vertex_array
;
2472 GLboolean EXT_depth_bounds_test
;
2473 GLboolean EXT_draw_range_elements
;
2474 GLboolean EXT_fog_coord
;
2475 GLboolean EXT_framebuffer_blit
;
2476 GLboolean EXT_framebuffer_multisample
;
2477 GLboolean EXT_framebuffer_object
;
2478 GLboolean EXT_gpu_program_parameters
;
2479 GLboolean EXT_gpu_shader4
;
2480 GLboolean EXT_packed_pixels
;
2481 GLboolean EXT_pixel_buffer_object
;
2482 GLboolean EXT_point_parameters
;
2483 GLboolean EXT_rescale_normal
;
2484 GLboolean EXT_shadow_funcs
;
2485 GLboolean EXT_secondary_color
;
2486 GLboolean EXT_separate_shader_objects
;
2487 GLboolean EXT_separate_specular_color
;
2488 GLboolean EXT_stencil_two_side
;
2489 GLboolean EXT_texture3D
;
2490 GLboolean EXT_texture_env_dot3
;
2491 GLboolean EXT_texture_filter_anisotropic
;
2492 GLboolean EXT_texture_integer
;
2493 GLboolean EXT_texture_mirror_clamp
;
2494 /* vendor extensions */
2495 GLboolean APPLE_packed_pixels
;
2496 GLboolean APPLE_vertex_array_object
;
2497 GLboolean APPLE_object_purgeable
;
2498 GLboolean ATI_envmap_bumpmap
;
2499 GLboolean ATI_texture_mirror_once
;
2500 GLboolean ATI_texture_env_combine3
;
2501 GLboolean ATI_separate_stencil
;
2502 GLboolean IBM_rasterpos_clip
;
2503 GLboolean IBM_multimode_draw_arrays
;
2504 GLboolean MESA_pack_invert
;
2505 GLboolean MESA_resize_buffers
;
2506 GLboolean MESA_ycbcr_texture
;
2507 GLboolean NV_blend_square
;
2508 GLboolean NV_fog_distance
;
2509 GLboolean NV_fragment_program
;
2510 GLboolean NV_fragment_program_option
;
2511 GLboolean NV_light_max_exponent
;
2512 GLboolean NV_point_sprite
;
2513 GLboolean NV_texture_barrier
;
2514 GLboolean NV_texgen_reflection
;
2515 GLboolean NV_texture_env_combine4
;
2516 GLboolean NV_vertex_program
;
2517 GLboolean NV_vertex_program1_1
;
2518 GLboolean SGIS_texture_lod
;
2519 GLboolean extension_sentinel
;
2520 /** The extension string */
2521 const GLubyte
*String
;
2522 /** Number of supported extensions */
2528 * A stack of matrices (projection, modelview, color, texture, etc).
2530 struct gl_matrix_stack
2532 GLmatrix
*Top
; /**< points into Stack */
2533 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2534 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2535 GLuint MaxDepth
; /**< size of Stack[] array */
2536 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2541 * \name Bits for image transfer operations
2542 * \sa __struct gl_contextRec::ImageTransferState.
2545 #define IMAGE_SCALE_BIAS_BIT 0x1
2546 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2547 #define IMAGE_MAP_COLOR_BIT 0x4
2548 #define IMAGE_CLAMP_BIT 0x800
2551 /** Pixel Transfer ops */
2552 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
2553 IMAGE_SHIFT_OFFSET_BIT | \
2554 IMAGE_MAP_COLOR_BIT)
2557 * \name Bits to indicate what state has changed.
2560 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
2561 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
2562 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
2563 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
2564 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
2565 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
2566 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
2567 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
2568 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
2569 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
2570 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
2571 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
2572 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
2573 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
2574 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
2575 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
2576 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
2577 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
2578 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
2579 #define _NEW_PACKUNPACK (1 << 19) /**< gl_context::Pack, Unpack */
2580 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
2581 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
2582 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
2583 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
2584 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
2585 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
2586 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
2587 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2588 #define _NEW_BUFFER_OBJECT (1 << 28)
2589 #define _NEW_FRAG_CLAMP (1 << 29)
2593 * We use _NEW_TRANSFORM for GL_RASTERIZER_DISCARD. This #define is for
2596 #define _NEW_RASTERIZER_DISCARD _NEW_TRANSFORM
2601 * \name A bunch of flags that we think might be useful to drivers.
2603 * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
2606 #define DD_FLATSHADE 0x1
2607 #define DD_SEPARATE_SPECULAR 0x2
2608 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2609 #define DD_TRI_LIGHT_TWOSIDE 0x8
2610 #define DD_TRI_UNFILLED 0x10
2611 #define DD_TRI_SMOOTH 0x20
2612 #define DD_TRI_STIPPLE 0x40
2613 #define DD_TRI_OFFSET 0x80
2614 #define DD_LINE_SMOOTH 0x100
2615 #define DD_LINE_STIPPLE 0x200
2616 #define DD_POINT_SMOOTH 0x400
2617 #define DD_POINT_ATTEN 0x800
2618 #define DD_TRI_TWOSTENCIL 0x1000
2623 * \name Define the state changes under which each of these bits might change
2626 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2627 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2628 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2629 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2630 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2631 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2632 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2633 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2634 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2635 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2636 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2637 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2638 #define _DD_NEW_POINT_SIZE _NEW_POINT
2639 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2644 * Composite state flags
2647 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2657 /* This has to be included here. */
2662 * Display list flags.
2663 * Strictly this is a tnl-private concept, but it doesn't seem
2664 * worthwhile adding a tnl private structure just to hold this one bit
2667 #define DLIST_DANGLING_REFS 0x1
2670 /** Opaque declaration of display list payload data type */
2671 union gl_dlist_node
;
2675 * Provide a location where information about a display list can be
2676 * collected. Could be extended with driverPrivate structures,
2677 * etc. in the future.
2679 struct gl_display_list
2682 GLbitfield Flags
; /**< DLIST_x flags */
2683 /** The dlist commands are in a linked list of nodes */
2684 union gl_dlist_node
*Head
;
2689 * State used during display list compilation and execution.
2691 struct gl_dlist_state
2693 GLuint CallDepth
; /**< Current recursion calling depth */
2695 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
2696 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
2697 GLuint CurrentPos
; /**< Index into current block of nodes */
2699 GLvertexformat ListVtxfmt
;
2701 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
2702 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
2704 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
2705 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
2707 GLubyte ActiveIndex
;
2708 GLfloat CurrentIndex
;
2710 GLubyte ActiveEdgeFlag
;
2711 GLboolean CurrentEdgeFlag
;
2714 /* State known to have been set by the currently-compiling display
2715 * list. Used to eliminate some redundant state changes.
2723 * Mesa rendering context.
2725 * This is the central context data structure for Mesa. Almost all
2726 * OpenGL state is contained in this structure.
2727 * Think of this as a base class from which device drivers will derive
2730 * The struct gl_context typedef names this structure.
2734 /** State possibly shared with other contexts in the address space */
2735 struct gl_shared_state
*Shared
;
2737 /** \name API function pointer tables */
2739 struct _glapi_table
*Save
; /**< Display list save functions */
2740 struct _glapi_table
*Exec
; /**< Execute functions */
2741 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
2744 struct gl_config Visual
;
2745 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
2746 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
2747 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
2748 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
2751 * Device driver function pointer table
2753 struct dd_function_table Driver
;
2755 void *DriverCtx
; /**< Points to device driver context/state */
2757 /** Core/Driver constants */
2758 struct gl_constants Const
;
2760 /** \name The various 4x4 matrix stacks */
2762 struct gl_matrix_stack ModelviewMatrixStack
;
2763 struct gl_matrix_stack ProjectionMatrixStack
;
2764 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
2765 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
2766 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
2769 /** Combined modelview and projection matrix */
2770 GLmatrix _ModelProjectMatrix
;
2772 /** \name Display lists */
2773 struct gl_dlist_state ListState
;
2775 GLboolean ExecuteFlag
; /**< Execute GL commands? */
2776 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
2778 /** Extension information */
2779 struct gl_extensions Extensions
;
2782 GLuint VersionMajor
, VersionMinor
;
2783 char *VersionString
;
2785 /** \name State attribute stack (for glPush/PopAttrib) */
2787 GLuint AttribStackDepth
;
2788 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
2791 /** \name Renderer attribute groups
2793 * We define a struct for each attribute group to make pushing and popping
2794 * attributes easy. Also it's a good organization.
2797 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
2798 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
2799 struct gl_current_attrib Current
; /**< Current attributes */
2800 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
2801 struct gl_eval_attrib Eval
; /**< Eval attributes */
2802 struct gl_fog_attrib Fog
; /**< Fog attributes */
2803 struct gl_hint_attrib Hint
; /**< Hint attributes */
2804 struct gl_light_attrib Light
; /**< Light attributes */
2805 struct gl_line_attrib Line
; /**< Line attributes */
2806 struct gl_list_attrib List
; /**< List attributes */
2807 struct gl_multisample_attrib Multisample
;
2808 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
2809 struct gl_point_attrib Point
; /**< Point attributes */
2810 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
2811 GLuint PolygonStipple
[32]; /**< Polygon stipple */
2812 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
2813 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
2814 struct gl_texture_attrib Texture
; /**< Texture attributes */
2815 struct gl_transform_attrib Transform
; /**< Transformation attributes */
2816 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
2819 /** \name Client attribute stack */
2821 GLuint ClientAttribStackDepth
;
2822 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
2825 /** \name Client attribute groups */
2827 struct gl_array_attrib Array
; /**< Vertex arrays */
2828 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
2829 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
2830 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
2833 /** \name Other assorted state (not pushed/popped on attribute stack) */
2835 struct gl_pixelmaps PixelMaps
;
2837 struct gl_evaluators EvalMap
; /**< All evaluators */
2838 struct gl_feedback Feedback
; /**< Feedback */
2839 struct gl_selection Select
; /**< Selection */
2841 struct gl_program_state Program
; /**< general program state */
2842 struct gl_vertex_program_state VertexProgram
;
2843 struct gl_fragment_program_state FragmentProgram
;
2845 struct gl_shader_state Shader
; /**< GLSL shader object state */
2846 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
2849 struct gl_meta_state
*Meta
; /**< for "meta" operations */
2851 /* GL_EXT_framebuffer_object */
2852 struct gl_renderbuffer
*CurrentRenderbuffer
;
2854 GLenum ErrorValue
; /**< Last error code */
2856 /* GL_ARB_robustness */
2860 * Recognize and silence repeated error debug messages in buggy apps.
2862 const char *ErrorDebugFmtString
;
2863 GLuint ErrorDebugCount
;
2865 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
2866 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
2868 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
2870 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
2872 /** \name Derived state */
2874 /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
2875 * state validation so they need to always be current.
2877 GLbitfield _TriangleCaps
;
2878 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
2879 GLfloat _EyeZDir
[3];
2880 GLfloat _ModelViewInvScale
;
2881 GLboolean _NeedEyeCoords
;
2882 GLboolean _ForceEyeCoords
;
2884 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
2886 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
2887 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
2890 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
2892 /** \name For debugging/development only */
2894 GLboolean FirstTimeCurrent
;
2897 /** software compression/decompression supported or not */
2898 GLboolean Mesa_DXTn
;
2900 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
2903 * Use dp4 (rather than mul/mad) instructions for position
2906 GLboolean mvp_with_dp4
;
2908 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
2911 * \name Hooks for module contexts.
2913 * These will eventually live in the driver or elsewhere.
2916 void *swrast_context
;
2917 void *swsetup_context
;
2918 void *swtnl_context
;
2920 struct st_context
*st
;
2927 extern int MESA_VERBOSE
;
2928 extern int MESA_DEBUG_FLAGS
;
2929 # define MESA_FUNCTION __FUNCTION__
2931 # define MESA_VERBOSE 0
2932 # define MESA_DEBUG_FLAGS 0
2933 # define MESA_FUNCTION "a function"
2940 /** The MESA_VERBOSE var is a bitmask of these flags */
2943 VERBOSE_VARRAY
= 0x0001,
2944 VERBOSE_TEXTURE
= 0x0002,
2945 VERBOSE_MATERIAL
= 0x0004,
2946 VERBOSE_PIPELINE
= 0x0008,
2947 VERBOSE_DRIVER
= 0x0010,
2948 VERBOSE_STATE
= 0x0020,
2949 VERBOSE_API
= 0x0040,
2950 VERBOSE_DISPLAY_LIST
= 0x0100,
2951 VERBOSE_LIGHTING
= 0x0200,
2952 VERBOSE_PRIMS
= 0x0400,
2953 VERBOSE_VERTS
= 0x0800,
2954 VERBOSE_DISASSEM
= 0x1000,
2955 VERBOSE_DRAW
= 0x2000,
2956 VERBOSE_SWAPBUFFERS
= 0x4000
2960 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
2963 DEBUG_ALWAYS_FLUSH
= 0x1
2972 #endif /* MTYPES_H */