2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include <stdint.h> /* uint32_t */
40 #include "main/glheader.h"
41 #include "main/config.h"
42 #include "glapi/glapi.h"
43 #include "math/m_matrix.h" /* GLmatrix */
44 #include "main/simple_list.h" /* struct simple_node */
45 #include "main/formats.h" /* MESA_FORMAT_COUNT */
54 * \name 64-bit extension of GLbitfield.
57 typedef GLuint64 GLbitfield64
;
59 /** Set a single bit */
60 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
61 /** Set all bits up to excluding bit b */
62 #define BITFIELD64_MASK(b) \
63 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
64 /** Set count bits starting from bit b */
65 #define BITFIELD64_RANGE(b, count) \
66 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
70 * \name Some forward type declarations
73 struct _mesa_HashTable
;
74 struct gl_attrib_node
;
75 struct gl_list_extensions
;
77 struct gl_program_cache
;
78 struct gl_texture_object
;
81 struct gl_uniform_storage
;
82 struct prog_instruction
;
83 struct gl_program_parameter_list
;
90 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
91 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
92 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
93 #define PRIM_UNKNOWN (PRIM_MAX + 2)
98 * Indexes for vertex program attributes.
99 * GL_NV_vertex_program aliases generic attributes over the conventional
100 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
101 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
102 * generic attributes are distinct/separate).
107 VERT_ATTRIB_WEIGHT
= 1,
108 VERT_ATTRIB_NORMAL
= 2,
109 VERT_ATTRIB_COLOR0
= 3,
110 VERT_ATTRIB_COLOR1
= 4,
112 VERT_ATTRIB_COLOR_INDEX
= 6,
113 VERT_ATTRIB_EDGEFLAG
= 7,
114 VERT_ATTRIB_TEX0
= 8,
115 VERT_ATTRIB_TEX1
= 9,
116 VERT_ATTRIB_TEX2
= 10,
117 VERT_ATTRIB_TEX3
= 11,
118 VERT_ATTRIB_TEX4
= 12,
119 VERT_ATTRIB_TEX5
= 13,
120 VERT_ATTRIB_TEX6
= 14,
121 VERT_ATTRIB_TEX7
= 15,
122 VERT_ATTRIB_POINT_SIZE
= 16,
123 VERT_ATTRIB_GENERIC0
= 17,
124 VERT_ATTRIB_GENERIC1
= 18,
125 VERT_ATTRIB_GENERIC2
= 19,
126 VERT_ATTRIB_GENERIC3
= 20,
127 VERT_ATTRIB_GENERIC4
= 21,
128 VERT_ATTRIB_GENERIC5
= 22,
129 VERT_ATTRIB_GENERIC6
= 23,
130 VERT_ATTRIB_GENERIC7
= 24,
131 VERT_ATTRIB_GENERIC8
= 25,
132 VERT_ATTRIB_GENERIC9
= 26,
133 VERT_ATTRIB_GENERIC10
= 27,
134 VERT_ATTRIB_GENERIC11
= 28,
135 VERT_ATTRIB_GENERIC12
= 29,
136 VERT_ATTRIB_GENERIC13
= 30,
137 VERT_ATTRIB_GENERIC14
= 31,
138 VERT_ATTRIB_GENERIC15
= 32,
143 * Symbolic constats to help iterating over
144 * specific blocks of vertex attributes.
147 * includes all fixed function attributes as well as
148 * the aliased GL_NV_vertex_program shader attributes.
150 * include the classic texture coordinate attributes.
151 * Is a subset of VERT_ATTRIB_FF.
152 * VERT_ATTRIB_GENERIC
153 * include the OpenGL 2.0+ GLSL generic shader attributes.
154 * These alias the generic GL_ARB_vertex_shader attributes.
156 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
157 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
159 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
160 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
162 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
163 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
166 * Bitflags for vertex attributes.
167 * These are used in bitfields in many places.
170 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
171 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
172 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
173 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
174 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
175 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
176 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
177 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
178 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
179 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
180 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
181 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
182 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
183 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
184 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
185 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
186 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
187 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
189 #define VERT_BIT(i) BITFIELD64_BIT(i)
190 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
192 #define VERT_BIT_FF(i) VERT_BIT(i)
193 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
194 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
195 #define VERT_BIT_TEX_ALL \
196 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
198 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
199 #define VERT_BIT_GENERIC_ALL \
200 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
205 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
206 * fragment shader inputs.
208 * Note that some of these values are not available to all pipeline stages.
210 * When this enum is updated, the following code must be updated too:
211 * - vertResults (in prog_print.c's arb_output_attrib_string())
212 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
213 * - _mesa_varying_slot_in_fs()
218 VARYING_SLOT_COL0
, /* COL0 and COL1 must be contiguous */
221 VARYING_SLOT_TEX0
, /* TEX0-TEX7 must be contiguous */
229 VARYING_SLOT_PSIZ
, /* Does not appear in FS */
230 VARYING_SLOT_BFC0
, /* Does not appear in FS */
231 VARYING_SLOT_BFC1
, /* Does not appear in FS */
232 VARYING_SLOT_EDGE
, /* Does not appear in FS */
233 VARYING_SLOT_CLIP_VERTEX
, /* Does not appear in FS */
234 VARYING_SLOT_CLIP_DIST0
,
235 VARYING_SLOT_CLIP_DIST1
,
236 VARYING_SLOT_PRIMITIVE_ID
, /* Does not appear in VS */
237 VARYING_SLOT_LAYER
, /* Appears as VS or GS output */
238 VARYING_SLOT_FACE
, /* FS only */
239 VARYING_SLOT_PNTC
, /* FS only */
240 VARYING_SLOT_VAR0
, /* First generic varying slot */
241 VARYING_SLOT_MAX
= VARYING_SLOT_VAR0
+ MAX_VARYING
246 * Bitflags for varying slots.
249 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
250 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
251 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
252 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
253 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
254 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
255 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
256 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
257 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
258 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
259 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
260 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
261 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
262 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
263 MAX_TEXTURE_COORD_UNITS)
264 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
265 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
266 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
267 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
268 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
269 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
270 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
271 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
272 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
273 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
274 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
275 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
279 * Bitflags for system values.
281 #define SYSTEM_BIT_SAMPLE_ID BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_ID)
282 #define SYSTEM_BIT_SAMPLE_POS BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_POS)
285 * Determine if the given gl_varying_slot appears in the fragment shader.
287 static inline GLboolean
288 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
291 case VARYING_SLOT_PSIZ
:
292 case VARYING_SLOT_BFC0
:
293 case VARYING_SLOT_BFC1
:
294 case VARYING_SLOT_EDGE
:
295 case VARYING_SLOT_CLIP_VERTEX
:
296 case VARYING_SLOT_LAYER
:
305 * Fragment program results
309 FRAG_RESULT_DEPTH
= 0,
310 FRAG_RESULT_STENCIL
= 1,
311 /* If a single color should be written to all render targets, this
312 * register is written. No FRAG_RESULT_DATAn will be written.
314 FRAG_RESULT_COLOR
= 2,
315 FRAG_RESULT_SAMPLE_MASK
= 3,
317 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
318 * or ARB_fragment_program fragment.color[n]) color results. If
319 * any are written, FRAG_RESULT_COLOR will not be written.
321 FRAG_RESULT_DATA0
= 4,
322 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
327 * Indexes for all renderbuffers
331 /* the four standard color buffers */
339 /* optional aux buffer */
341 /* generic renderbuffers */
354 * Bit flags for all renderbuffers
356 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
357 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
358 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
359 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
360 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
361 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
362 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
363 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
364 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
365 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
366 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
367 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
368 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
369 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
370 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
371 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
372 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
373 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
374 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
377 * Mask of all the color buffer bits (but not accum).
379 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
380 BUFFER_BIT_BACK_LEFT | \
381 BUFFER_BIT_FRONT_RIGHT | \
382 BUFFER_BIT_BACK_RIGHT | \
384 BUFFER_BIT_COLOR0 | \
385 BUFFER_BIT_COLOR1 | \
386 BUFFER_BIT_COLOR2 | \
387 BUFFER_BIT_COLOR3 | \
388 BUFFER_BIT_COLOR4 | \
389 BUFFER_BIT_COLOR5 | \
390 BUFFER_BIT_COLOR6 | \
395 * Framebuffer configuration (aka visual / pixelformat)
396 * Note: some of these fields should be boolean, but it appears that
397 * code in drivers/dri/common/util.c requires int-sized fields.
403 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
404 GLuint doubleBufferMode
;
407 GLboolean haveAccumBuffer
;
408 GLboolean haveDepthBuffer
;
409 GLboolean haveStencilBuffer
;
411 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
412 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
413 GLint rgbBits
; /* total bits for rgb */
414 GLint indexBits
; /* total bits for colorindex */
416 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
424 /* EXT_visual_rating / GLX 1.2 */
427 /* EXT_visual_info / GLX 1.2 */
428 GLint transparentPixel
;
429 /* colors are floats scaled to ints */
430 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
431 GLint transparentIndex
;
433 /* ARB_multisample / SGIS_multisample */
437 /* SGIX_pbuffer / GLX 1.3 */
438 GLint maxPbufferWidth
;
439 GLint maxPbufferHeight
;
440 GLint maxPbufferPixels
;
441 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
442 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
444 /* OML_swap_method */
447 /* EXT_texture_from_pixmap */
448 GLint bindToTextureRgb
;
449 GLint bindToTextureRgba
;
450 GLint bindToMipmapTexture
;
451 GLint bindToTextureTargets
;
454 /* EXT_framebuffer_sRGB */
460 * \name Bit flags used for updating material values.
463 #define MAT_ATTRIB_FRONT_AMBIENT 0
464 #define MAT_ATTRIB_BACK_AMBIENT 1
465 #define MAT_ATTRIB_FRONT_DIFFUSE 2
466 #define MAT_ATTRIB_BACK_DIFFUSE 3
467 #define MAT_ATTRIB_FRONT_SPECULAR 4
468 #define MAT_ATTRIB_BACK_SPECULAR 5
469 #define MAT_ATTRIB_FRONT_EMISSION 6
470 #define MAT_ATTRIB_BACK_EMISSION 7
471 #define MAT_ATTRIB_FRONT_SHININESS 8
472 #define MAT_ATTRIB_BACK_SHININESS 9
473 #define MAT_ATTRIB_FRONT_INDEXES 10
474 #define MAT_ATTRIB_BACK_INDEXES 11
475 #define MAT_ATTRIB_MAX 12
477 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
478 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
479 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
480 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
481 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
482 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
484 #define MAT_INDEX_AMBIENT 0
485 #define MAT_INDEX_DIFFUSE 1
486 #define MAT_INDEX_SPECULAR 2
488 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
489 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
490 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
491 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
492 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
493 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
494 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
495 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
496 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
497 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
498 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
499 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
502 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
503 MAT_BIT_FRONT_AMBIENT | \
504 MAT_BIT_FRONT_DIFFUSE | \
505 MAT_BIT_FRONT_SPECULAR | \
506 MAT_BIT_FRONT_SHININESS | \
507 MAT_BIT_FRONT_INDEXES)
509 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
510 MAT_BIT_BACK_AMBIENT | \
511 MAT_BIT_BACK_DIFFUSE | \
512 MAT_BIT_BACK_SPECULAR | \
513 MAT_BIT_BACK_SHININESS | \
514 MAT_BIT_BACK_INDEXES)
516 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
525 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
533 #define LIGHT_SPOT 0x1
534 #define LIGHT_LOCAL_VIEWER 0x2
535 #define LIGHT_POSITIONAL 0x4
536 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
541 * Light source state.
545 struct gl_light
*next
; /**< double linked list with sentinel */
546 struct gl_light
*prev
;
548 GLfloat Ambient
[4]; /**< ambient color */
549 GLfloat Diffuse
[4]; /**< diffuse color */
550 GLfloat Specular
[4]; /**< specular color */
551 GLfloat EyePosition
[4]; /**< position in eye coordinates */
552 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
553 GLfloat SpotExponent
;
554 GLfloat SpotCutoff
; /**< in degrees */
555 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
556 GLfloat ConstantAttenuation
;
557 GLfloat LinearAttenuation
;
558 GLfloat QuadraticAttenuation
;
559 GLboolean Enabled
; /**< On/off flag */
562 * \name Derived fields
565 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
567 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
568 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
569 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
570 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
571 GLfloat _VP_inf_spot_attenuation
;
573 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
574 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
575 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
585 GLfloat Ambient
[4]; /**< ambient color */
586 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
587 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
588 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
589 * or GL_SEPARATE_SPECULAR_COLOR */
594 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
596 struct gl_accum_attrib
598 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
603 * Used for storing clear color, texture border color, etc.
604 * The float values are typically unclamped.
615 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
617 struct gl_colorbuffer_attrib
619 GLuint ClearIndex
; /**< Index for glClear */
620 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
621 GLuint IndexMask
; /**< Color index write mask */
622 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
624 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
627 * \name alpha testing
630 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
631 GLenum AlphaFunc
; /**< Alpha test function */
632 GLfloat AlphaRefUnclamped
;
633 GLclampf AlphaRef
; /**< Alpha reference value */
640 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
642 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
643 * control, only on the fixed-pointness of the render target.
644 * The query does however depend on fragment color clamping.
646 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
647 GLfloat BlendColor
[4]; /**< Blending color */
651 GLenum SrcRGB
; /**< RGB blend source term */
652 GLenum DstRGB
; /**< RGB blend dest term */
653 GLenum SrcA
; /**< Alpha blend source term */
654 GLenum DstA
; /**< Alpha blend dest term */
655 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
656 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
658 * Set if any blend factor uses SRC1. Computed at the time blend factors
661 GLboolean _UsesDualSrc
;
662 } Blend
[MAX_DRAW_BUFFERS
];
663 /** Are the blend func terms currently different for each buffer/target? */
664 GLboolean _BlendFuncPerBuffer
;
665 /** Are the blend equations currently different for each buffer/target? */
666 GLboolean _BlendEquationPerBuffer
;
673 GLenum LogicOp
; /**< Logic operator */
674 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
675 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
678 GLboolean DitherFlag
; /**< Dither enable flag */
680 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
681 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
682 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
684 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
689 * Current attribute group (GL_CURRENT_BIT).
691 struct gl_current_attrib
694 * \name Current vertex attributes.
695 * \note Values are valid only after FLUSH_VERTICES has been called.
696 * \note Index and Edgeflag current values are stored as floats in the
697 * SIX and SEVEN attribute slots.
699 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
702 * \name Current raster position attributes (always valid).
703 * \note This set of attributes is very similar to the SWvertex struct.
706 GLfloat RasterPos
[4];
707 GLfloat RasterDistance
;
708 GLfloat RasterColor
[4];
709 GLfloat RasterSecondaryColor
[4];
710 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
711 GLboolean RasterPosValid
;
717 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
719 struct gl_depthbuffer_attrib
721 GLenum Func
; /**< Function for depth buffer compare */
722 GLclampd Clear
; /**< Value to clear depth buffer to */
723 GLboolean Test
; /**< Depth buffering enabled flag */
724 GLboolean Mask
; /**< Depth buffer writable? */
725 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
726 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
731 * Evaluator attribute group (GL_EVAL_BIT).
733 struct gl_eval_attrib
739 GLboolean Map1Color4
;
741 GLboolean Map1Normal
;
742 GLboolean Map1TextureCoord1
;
743 GLboolean Map1TextureCoord2
;
744 GLboolean Map1TextureCoord3
;
745 GLboolean Map1TextureCoord4
;
746 GLboolean Map1Vertex3
;
747 GLboolean Map1Vertex4
;
748 GLboolean Map2Color4
;
750 GLboolean Map2Normal
;
751 GLboolean Map2TextureCoord1
;
752 GLboolean Map2TextureCoord2
;
753 GLboolean Map2TextureCoord3
;
754 GLboolean Map2TextureCoord4
;
755 GLboolean Map2Vertex3
;
756 GLboolean Map2Vertex4
;
757 GLboolean AutoNormal
;
761 * \name Map Grid endpoints and divisions and calculated du values
765 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
766 GLint MapGrid2un
, MapGrid2vn
;
767 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
768 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
774 * Fog attribute group (GL_FOG_BIT).
778 GLboolean Enabled
; /**< Fog enabled flag */
779 GLfloat ColorUnclamped
[4]; /**< Fog color */
780 GLfloat Color
[4]; /**< Fog color */
781 GLfloat Density
; /**< Density >= 0.0 */
782 GLfloat Start
; /**< Start distance in eye coords */
783 GLfloat End
; /**< End distance in eye coords */
784 GLfloat Index
; /**< Fog index */
785 GLenum Mode
; /**< Fog mode */
786 GLboolean ColorSumEnabled
;
787 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
788 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
789 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
794 * Hint attribute group (GL_HINT_BIT).
796 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
798 struct gl_hint_attrib
800 GLenum PerspectiveCorrection
;
803 GLenum PolygonSmooth
;
805 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
806 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
807 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
812 * Lighting attribute group (GL_LIGHT_BIT).
814 struct gl_light_attrib
816 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
817 struct gl_lightmodel Model
; /**< Lighting model */
820 * Front and back material values.
821 * Note: must call FLUSH_VERTICES() before using.
823 struct gl_material Material
;
825 GLboolean Enabled
; /**< Lighting enabled flag */
826 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
827 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
828 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
829 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
830 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
831 GLboolean ColorMaterialEnabled
;
832 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
833 GLboolean _ClampVertexColor
;
835 struct gl_light EnabledList
; /**< List sentinel */
838 * Derived state for optimizations:
841 GLboolean _NeedEyeCoords
;
842 GLboolean _NeedVertices
; /**< Use fast shader? */
843 GLfloat _BaseColor
[2][3];
849 * Line attribute group (GL_LINE_BIT).
851 struct gl_line_attrib
853 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
854 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
855 GLushort StipplePattern
; /**< Stipple pattern */
856 GLint StippleFactor
; /**< Stipple repeat factor */
857 GLfloat Width
; /**< Line width */
862 * Display list attribute group (GL_LIST_BIT).
864 struct gl_list_attrib
871 * Multisample attribute group (GL_MULTISAMPLE_BIT).
873 struct gl_multisample_attrib
876 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
877 GLboolean SampleAlphaToCoverage
;
878 GLboolean SampleAlphaToOne
;
879 GLboolean SampleCoverage
;
880 GLfloat SampleCoverageValue
;
881 GLboolean SampleCoverageInvert
;
882 GLboolean SampleShading
;
883 GLfloat MinSampleShadingValue
;
885 /* ARB_texture_multisample / GL3.2 additions */
886 GLboolean SampleMask
;
887 /** The GL spec defines this as an array but >32x MSAA is madness */
888 GLbitfield SampleMaskValue
;
893 * A pixelmap (see glPixelMap)
898 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
903 * Collection of all pixelmaps
907 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
908 struct gl_pixelmap GtoG
;
909 struct gl_pixelmap BtoB
;
910 struct gl_pixelmap AtoA
;
911 struct gl_pixelmap ItoR
;
912 struct gl_pixelmap ItoG
;
913 struct gl_pixelmap ItoB
;
914 struct gl_pixelmap ItoA
;
915 struct gl_pixelmap ItoI
;
916 struct gl_pixelmap StoS
;
921 * Pixel attribute group (GL_PIXEL_MODE_BIT).
923 struct gl_pixel_attrib
925 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
927 /*--- Begin Pixel Transfer State ---*/
928 /* Fields are in the order in which they're applied... */
930 /** Scale & Bias (index shift, offset) */
932 GLfloat RedBias
, RedScale
;
933 GLfloat GreenBias
, GreenScale
;
934 GLfloat BlueBias
, BlueScale
;
935 GLfloat AlphaBias
, AlphaScale
;
936 GLfloat DepthBias
, DepthScale
;
937 GLint IndexShift
, IndexOffset
;
941 /* Note: actual pixel maps are not part of this attrib group */
942 GLboolean MapColorFlag
;
943 GLboolean MapStencilFlag
;
945 /*--- End Pixel Transfer State ---*/
948 GLfloat ZoomX
, ZoomY
;
953 * Point attribute group (GL_POINT_BIT).
955 struct gl_point_attrib
957 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
958 GLfloat Size
; /**< User-specified point size */
959 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
960 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
961 GLfloat Threshold
; /**< GL_EXT_point_parameters */
962 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
963 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
964 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
965 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
966 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
971 * Polygon attribute group (GL_POLYGON_BIT).
973 struct gl_polygon_attrib
975 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
976 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
977 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
978 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
979 GLboolean CullFlag
; /**< Culling on/off flag */
980 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
981 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
982 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
983 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
984 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
985 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
986 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
987 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
992 * Scissor attributes (GL_SCISSOR_BIT).
994 struct gl_scissor_attrib
996 GLboolean Enabled
; /**< Scissor test enabled? */
997 GLint X
, Y
; /**< Lower left corner of box */
998 GLsizei Width
, Height
; /**< Size of box */
1003 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1005 * Three sets of stencil data are tracked so that OpenGL 2.0,
1006 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1007 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1008 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1009 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1010 * GL_EXT_stencil_two_side GL_BACK state.
1012 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1013 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1015 * The derived value \c _TestTwoSide is set when the front-face and back-face
1016 * stencil state are different.
1018 struct gl_stencil_attrib
1020 GLboolean Enabled
; /**< Enabled flag */
1021 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1022 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1023 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1024 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1025 GLboolean _TestTwoSide
;
1026 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1027 GLenum Function
[3]; /**< Stencil function */
1028 GLenum FailFunc
[3]; /**< Fail function */
1029 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1030 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1031 GLint Ref
[3]; /**< Reference value */
1032 GLuint ValueMask
[3]; /**< Value mask */
1033 GLuint WriteMask
[3]; /**< Write mask */
1034 GLuint Clear
; /**< Clear value */
1039 * An index for each type of texture object. These correspond to the GL
1040 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1041 * Note: the order is from highest priority to lowest priority.
1045 TEXTURE_2D_MULTISAMPLE_INDEX
,
1046 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1047 TEXTURE_CUBE_ARRAY_INDEX
,
1048 TEXTURE_BUFFER_INDEX
,
1049 TEXTURE_2D_ARRAY_INDEX
,
1050 TEXTURE_1D_ARRAY_INDEX
,
1051 TEXTURE_EXTERNAL_INDEX
,
1062 * Bit flags for each type of texture object
1063 * Used for Texture.Unit[]._ReallyEnabled flags.
1066 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1067 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1068 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1069 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1070 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1071 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1072 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1073 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1074 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1075 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1076 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1077 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1082 * Texture image state. Drivers will typically create a subclass of this
1083 * with extra fields for memory buffers, etc.
1085 struct gl_texture_image
1087 GLint InternalFormat
; /**< Internal format as given by the user */
1088 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1089 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1090 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1091 * GL_DEPTH_STENCIL_EXT only. Used for
1092 * choosing TexEnv arithmetic.
1094 gl_format TexFormat
; /**< The actual texture memory format */
1096 GLuint Border
; /**< 0 or 1 */
1097 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1098 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1099 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1100 GLuint Width2
; /**< = Width - 2*Border */
1101 GLuint Height2
; /**< = Height - 2*Border */
1102 GLuint Depth2
; /**< = Depth - 2*Border */
1103 GLuint WidthLog2
; /**< = log2(Width2) */
1104 GLuint HeightLog2
; /**< = log2(Height2) */
1105 GLuint DepthLog2
; /**< = log2(Depth2) */
1106 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1107 levels, computed from the dimensions */
1109 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1110 GLuint Level
; /**< Which mipmap level am I? */
1111 /** Cube map face: index into gl_texture_object::Image[] array */
1114 /** GL_ARB_texture_multisample */
1115 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1116 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1121 * Indexes for cube map faces.
1136 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1137 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1139 struct gl_sampler_object
1143 GLchar
*Label
; /**< GL_KHR_debug */
1145 GLenum WrapS
; /**< S-axis texture image wrap mode */
1146 GLenum WrapT
; /**< T-axis texture image wrap mode */
1147 GLenum WrapR
; /**< R-axis texture image wrap mode */
1148 GLenum MinFilter
; /**< minification filter */
1149 GLenum MagFilter
; /**< magnification filter */
1150 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1151 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1152 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1153 GLfloat LodBias
; /**< OpenGL 1.4 */
1154 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1155 GLenum CompareMode
; /**< GL_ARB_shadow */
1156 GLenum CompareFunc
; /**< GL_ARB_shadow */
1157 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1158 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1163 * Texture object state. Contains the array of mipmap images, border color,
1164 * wrap modes, filter modes, and shadow/texcompare state.
1166 struct gl_texture_object
1168 _glthread_Mutex Mutex
; /**< for thread safety */
1169 GLint RefCount
; /**< reference count */
1170 GLuint Name
; /**< the user-visible texture object ID */
1171 GLchar
*Label
; /**< GL_KHR_debug */
1172 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1174 struct gl_sampler_object Sampler
;
1176 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1178 GLfloat Priority
; /**< in [0,1] */
1179 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1180 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1181 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1182 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1183 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1184 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1185 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1186 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1187 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1188 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1189 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1190 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1191 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1192 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1194 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1196 GLuint MinLevel
; /**< GL_ARB_texture_view */
1197 GLuint MinLayer
; /**< GL_ARB_texture_view */
1198 GLuint NumLevels
; /**< GL_ARB_texture_view */
1199 GLuint NumLayers
; /**< GL_ARB_texture_view */
1201 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1202 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1204 /** GL_ARB_texture_buffer_object */
1205 struct gl_buffer_object
*BufferObject
;
1206 GLenum BufferObjectFormat
;
1207 /** Equivalent Mesa format for BufferObjectFormat. */
1208 gl_format _BufferObjectFormat
;
1209 /** GL_ARB_texture_buffer_range */
1210 GLintptr BufferOffset
;
1211 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1213 /** GL_OES_EGL_image_external */
1214 GLint RequiredTextureImageUnits
;
1218 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1219 #define MAX_COMBINER_TERMS 4
1223 * Texture combine environment state.
1225 struct gl_tex_env_combine_state
1227 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1228 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1229 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1230 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1231 GLenum SourceA
[MAX_COMBINER_TERMS
];
1232 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1233 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1234 GLenum OperandA
[MAX_COMBINER_TERMS
];
1235 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1236 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1237 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1238 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1243 * TexGenEnabled flags.
1250 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1255 * Bit flag versions of the corresponding GL_ constants.
1258 #define TEXGEN_SPHERE_MAP 0x1
1259 #define TEXGEN_OBJ_LINEAR 0x2
1260 #define TEXGEN_EYE_LINEAR 0x4
1261 #define TEXGEN_REFLECTION_MAP_NV 0x8
1262 #define TEXGEN_NORMAL_MAP_NV 0x10
1264 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1265 TEXGEN_REFLECTION_MAP_NV | \
1266 TEXGEN_NORMAL_MAP_NV)
1267 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1268 TEXGEN_REFLECTION_MAP_NV | \
1269 TEXGEN_NORMAL_MAP_NV | \
1275 /** Tex-gen enabled for texture unit? */
1276 #define ENABLE_TEXGEN(unit) (1 << (unit))
1278 /** Non-identity texture matrix for texture unit? */
1279 #define ENABLE_TEXMAT(unit) (1 << (unit))
1283 * Texture coord generation state.
1287 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1288 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1289 GLfloat ObjectPlane
[4];
1290 GLfloat EyePlane
[4];
1295 * Texture unit state. Contains enable flags, texture environment/function/
1296 * combiners, texgen state, and pointers to current texture objects.
1298 struct gl_texture_unit
1300 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1301 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1303 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1304 GLclampf EnvColor
[4];
1305 GLfloat EnvColorUnclamped
[4];
1307 struct gl_texgen GenS
;
1308 struct gl_texgen GenT
;
1309 struct gl_texgen GenR
;
1310 struct gl_texgen GenQ
;
1311 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1312 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1314 GLfloat LodBias
; /**< for biasing mipmap levels */
1316 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1318 /** Current sampler object (GL_ARB_sampler_objects) */
1319 struct gl_sampler_object
*Sampler
;
1322 * \name GL_EXT_texture_env_combine
1324 struct gl_tex_env_combine_state Combine
;
1327 * Derived state based on \c EnvMode and the \c BaseFormat of the
1328 * currently enabled texture.
1330 struct gl_tex_env_combine_state _EnvMode
;
1333 * Currently enabled combiner state. This will point to either
1334 * \c Combine or \c _EnvMode.
1336 struct gl_tex_env_combine_state
*_CurrentCombine
;
1338 /** Current texture object pointers */
1339 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1341 /** Points to highest priority, complete and enabled texture object */
1342 struct gl_texture_object
*_Current
;
1347 * Texture attribute group (GL_TEXTURE_BIT).
1349 struct gl_texture_attrib
1351 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1352 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1354 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1356 /** GL_ARB_texture_buffer_object */
1357 struct gl_buffer_object
*BufferObject
;
1359 /** GL_ARB_seamless_cubemap */
1360 GLboolean CubeMapSeamless
;
1362 /** Texture units/samplers used by vertex or fragment texturing */
1363 GLbitfield _EnabledUnits
;
1365 /** Texture coord units/sets used for fragment texturing */
1366 GLbitfield _EnabledCoordUnits
;
1368 /** Texture coord units that have texgen enabled */
1369 GLbitfield _TexGenEnabled
;
1371 /** Texture coord units that have non-identity matrices */
1372 GLbitfield _TexMatEnabled
;
1374 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1375 GLbitfield _GenFlags
;
1380 * Data structure representing a single clip plane (e.g. one of the elements
1381 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1383 typedef GLfloat gl_clip_plane
[4];
1387 * Transformation attribute group (GL_TRANSFORM_BIT).
1389 struct gl_transform_attrib
1391 GLenum MatrixMode
; /**< Matrix mode */
1392 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1393 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1394 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1395 GLboolean Normalize
; /**< Normalize all normals? */
1396 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1397 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1398 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1400 GLfloat CullEyePos
[4];
1401 GLfloat CullObjPos
[4];
1406 * Viewport attribute group (GL_VIEWPORT_BIT).
1408 struct gl_viewport_attrib
1410 GLint X
, Y
; /**< position */
1411 GLsizei Width
, Height
; /**< size */
1412 GLfloat Near
, Far
; /**< Depth buffer range */
1413 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1418 * GL_ARB_vertex/pixel_buffer_object buffer object
1420 struct gl_buffer_object
1422 _glthread_Mutex Mutex
;
1425 GLchar
*Label
; /**< GL_KHR_debug */
1426 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1427 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1428 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1429 /** Fields describing a mapped buffer */
1431 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1432 GLvoid
*Pointer
; /**< User-space address of mapping */
1433 GLintptr Offset
; /**< Mapped offset */
1434 GLsizeiptr Length
; /**< Mapped length */
1436 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1437 GLboolean Written
; /**< Ever written to? (for debugging) */
1438 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1443 * Client pixel packing/unpacking attributes
1445 struct gl_pixelstore_attrib
1453 GLboolean SwapBytes
;
1455 GLboolean Invert
; /**< GL_MESA_pack_invert */
1456 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1461 * Client vertex array attributes
1463 struct gl_client_array
1465 GLint Size
; /**< components per element (1,2,3,4) */
1466 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1467 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1468 GLsizei Stride
; /**< user-specified stride */
1469 GLsizei StrideB
; /**< actual stride in bytes */
1470 const GLubyte
*Ptr
; /**< Points to array data */
1471 GLboolean Enabled
; /**< Enabled flag is a boolean */
1472 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1473 GLboolean Integer
; /**< Integer-valued? */
1474 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1475 GLuint _ElementSize
; /**< size of each element in bytes */
1477 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1478 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1483 * Vertex attribute array as seen by the client.
1485 * Contains the size, type, format and normalization flag,
1486 * along with the index of a vertex buffer binding point.
1488 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1489 * and is only present for backwards compatibility reasons.
1490 * Rendering always uses VERTEX_BINDING_STRIDE.
1491 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1492 * and VERTEX_BINDING_STRIDE to the same value, while
1493 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1495 struct gl_vertex_attrib_array
1497 GLint Size
; /**< Components per element (1,2,3,4) */
1498 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1499 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1500 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1501 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1502 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1503 GLboolean Enabled
; /**< Whether the array is enabled */
1504 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1505 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1506 GLuint _ElementSize
; /**< Size of each element in bytes */
1507 GLuint VertexBinding
; /**< Vertex buffer binding */
1512 * This describes the buffer object used for a vertex array (or
1513 * multiple vertex arrays). If BufferObj points to the default/null
1514 * buffer object, then the vertex array lives in user memory and not a VBO.
1516 struct gl_vertex_buffer_binding
1518 GLintptr Offset
; /**< User-specified offset */
1519 GLsizei Stride
; /**< User-specified stride */
1520 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1521 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1522 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1527 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1528 * extension, but a nice encapsulation in any case.
1530 struct gl_array_object
1532 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1534 GLchar
*Label
; /**< GL_KHR_debug */
1537 _glthread_Mutex Mutex
;
1540 * Does the VAO use ARB semantics or Apple semantics?
1542 * There are several ways in which ARB_vertex_array_object and
1543 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1546 * - ARB VAOs require that all array data be sourced from vertex buffer
1547 * objects, but Apple VAOs do not.
1549 * - ARB VAOs require that names come from GenVertexArrays.
1551 * This flag notes which behavior governs this VAO.
1553 GLboolean ARBsemantics
;
1556 * Has this array object been bound?
1558 GLboolean EverBound
;
1560 /** Derived vertex attribute arrays */
1561 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1563 /** Vertex attribute arrays */
1564 struct gl_vertex_attrib_array VertexAttrib
[VERT_ATTRIB_MAX
];
1566 /** Vertex buffer bindings */
1567 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1569 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1570 GLbitfield64 _Enabled
;
1572 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1573 GLbitfield64 NewArrays
;
1576 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1577 * we can determine the max legal (in bounds) glDrawElements array index.
1581 struct gl_buffer_object
*ElementArrayBufferObj
;
1586 * Vertex array state
1588 struct gl_array_attrib
1590 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1591 struct gl_array_object
*ArrayObj
;
1593 /** The default vertex array object */
1594 struct gl_array_object
*DefaultArrayObj
;
1596 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1597 struct _mesa_HashTable
*Objects
;
1599 GLint ActiveTexture
; /**< Client Active Texture */
1600 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1601 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1604 * \name Primitive restart controls
1606 * Primitive restart is enabled if either \c PrimitiveRestart or
1607 * \c PrimitiveRestartFixedIndex is set.
1610 GLboolean PrimitiveRestart
;
1611 GLboolean PrimitiveRestartFixedIndex
;
1612 GLboolean _PrimitiveRestart
;
1613 GLuint RestartIndex
;
1616 /* GL_ARB_vertex_buffer_object */
1617 struct gl_buffer_object
*ArrayBufferObj
;
1620 * Vertex arrays as consumed by a driver.
1621 * The array pointer is set up only by the VBO module.
1623 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1628 * Feedback buffer state
1633 GLbitfield _Mask
; /**< FB_* bits */
1641 * Selection buffer state
1645 GLuint
*Buffer
; /**< selection buffer */
1646 GLuint BufferSize
; /**< size of the selection buffer */
1647 GLuint BufferCount
; /**< number of values in the selection buffer */
1648 GLuint Hits
; /**< number of records in the selection buffer */
1649 GLuint NameStackDepth
; /**< name stack depth */
1650 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1651 GLboolean HitFlag
; /**< hit flag */
1652 GLfloat HitMinZ
; /**< minimum hit depth */
1653 GLfloat HitMaxZ
; /**< maximum hit depth */
1658 * 1-D Evaluator control points
1662 GLuint Order
; /**< Number of control points */
1663 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1664 GLfloat
*Points
; /**< Points to contiguous control points */
1669 * 2-D Evaluator control points
1673 GLuint Uorder
; /**< Number of control points in U dimension */
1674 GLuint Vorder
; /**< Number of control points in V dimension */
1677 GLfloat
*Points
; /**< Points to contiguous control points */
1682 * All evaluator control point state
1684 struct gl_evaluators
1690 struct gl_1d_map Map1Vertex3
;
1691 struct gl_1d_map Map1Vertex4
;
1692 struct gl_1d_map Map1Index
;
1693 struct gl_1d_map Map1Color4
;
1694 struct gl_1d_map Map1Normal
;
1695 struct gl_1d_map Map1Texture1
;
1696 struct gl_1d_map Map1Texture2
;
1697 struct gl_1d_map Map1Texture3
;
1698 struct gl_1d_map Map1Texture4
;
1705 struct gl_2d_map Map2Vertex3
;
1706 struct gl_2d_map Map2Vertex4
;
1707 struct gl_2d_map Map2Index
;
1708 struct gl_2d_map Map2Color4
;
1709 struct gl_2d_map Map2Normal
;
1710 struct gl_2d_map Map2Texture1
;
1711 struct gl_2d_map Map2Texture2
;
1712 struct gl_2d_map Map2Texture3
;
1713 struct gl_2d_map Map2Texture4
;
1718 struct gl_transform_feedback_varying_info
1727 * Per-output info vertex shaders for transform feedback.
1729 struct gl_transform_feedback_output
1731 unsigned OutputRegister
;
1732 unsigned OutputBuffer
;
1733 unsigned NumComponents
;
1735 /** offset (in DWORDs) of this output within the interleaved structure */
1739 * Offset into the output register of the data to output. For example,
1740 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1741 * offset is in the y and z components of the output register.
1743 unsigned ComponentOffset
;
1747 /** Post-link transform feedback info. */
1748 struct gl_transform_feedback_info
1750 unsigned NumOutputs
;
1753 * Number of transform feedback buffers in use by this program.
1755 unsigned NumBuffers
;
1757 struct gl_transform_feedback_output
*Outputs
;
1759 /** Transform feedback varyings used for the linking of this shader program.
1761 * Use for glGetTransformFeedbackVarying().
1763 struct gl_transform_feedback_varying_info
*Varyings
;
1767 * Total number of components stored in each buffer. This may be used by
1768 * hardware back-ends to determine the correct stride when interleaving
1769 * multiple transform feedback outputs in the same buffer.
1771 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1776 * Transform feedback object state
1778 struct gl_transform_feedback_object
1780 GLuint Name
; /**< AKA the object ID */
1781 GLchar
*Label
; /**< GL_KHR_debug */
1783 GLboolean Active
; /**< Is transform feedback enabled? */
1784 GLboolean Paused
; /**< Is transform feedback paused? */
1785 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1787 GLboolean EverBound
; /**< Has this object been bound? */
1790 * The shader program active when BeginTransformFeedback() was called.
1791 * When active and unpaused, this equals ctx->Shader.CurrentVertexProgram.
1793 struct gl_shader_program
*shader_program
;
1796 * GLES: if Active is true, remaining number of primitives which can be
1797 * rendered without overflow. This is necessary to track because GLES
1798 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1799 * glDrawArraysInstanced would overflow transform feedback buffers.
1800 * Undefined if Active is false.
1802 * Not tracked for desktop GL since it's unnecessary.
1804 unsigned GlesRemainingPrims
;
1806 /** The feedback buffers */
1807 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1808 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1810 /** Start of feedback data in dest buffer */
1811 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1814 * Max data to put into dest buffer (in bytes). Computed based on
1815 * RequestedSize and the actual size of the buffer.
1817 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1820 * Size that was specified when the buffer was bound. If the buffer was
1821 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1824 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1829 * Context state for transform feedback.
1831 struct gl_transform_feedback_state
1833 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1835 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1836 struct gl_buffer_object
*CurrentBuffer
;
1838 /** The table of all transform feedback objects */
1839 struct _mesa_HashTable
*Objects
;
1841 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1842 struct gl_transform_feedback_object
*CurrentObject
;
1844 /** The default xform-fb object (Name==0) */
1845 struct gl_transform_feedback_object
*DefaultObject
;
1850 * A "performance monitor" as described in AMD_performance_monitor.
1852 struct gl_perf_monitor_object
1856 /** True if the monitor is currently active (Begin called but not End). */
1860 * True if the monitor has ended.
1862 * This is distinct from !Active because it may never have began.
1867 * A list of groups with currently active counters.
1869 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1871 unsigned *ActiveGroups
;
1874 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1876 * Checking whether counter 'c' in group 'g' is active can be done via:
1878 * BITSET_TEST(ActiveCounters[g], c)
1880 GLuint
**ActiveCounters
;
1884 union gl_perf_monitor_counter_value
1892 struct gl_perf_monitor_counter
1894 /** Human readable name for the counter. */
1898 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1899 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1903 /** Minimum counter value. */
1904 union gl_perf_monitor_counter_value Minimum
;
1906 /** Maximum counter value. */
1907 union gl_perf_monitor_counter_value Maximum
;
1911 struct gl_perf_monitor_group
1913 /** Human readable name for the group. */
1917 * Maximum number of counters in this group which can be active at the
1920 GLuint MaxActiveCounters
;
1922 /** Array of counters within this group. */
1923 const struct gl_perf_monitor_counter
*Counters
;
1929 * Context state for AMD_performance_monitor.
1931 struct gl_perf_monitor_state
1933 /** Array of performance monitor groups (indexed by group ID) */
1934 const struct gl_perf_monitor_group
*Groups
;
1937 /** The table of all performance monitors. */
1938 struct _mesa_HashTable
*Monitors
;
1943 * Names of the various vertex/fragment program register files, etc.
1945 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1946 * All values should fit in a 4-bit field.
1948 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1949 * considered to be "uniform" variables since they can only be set outside
1950 * glBegin/End. They're also all stored in the same Parameters array.
1954 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1955 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1956 PROGRAM_INPUT
, /**< machine->Inputs[] */
1957 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1958 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1959 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1960 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1961 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1962 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1963 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1964 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1965 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1971 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1972 * one of these values.
1976 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1977 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1978 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1979 SYSTEM_VALUE_SAMPLE_ID
, /**< Fragment shader only */
1980 SYSTEM_VALUE_SAMPLE_POS
, /**< Fragment shader only */
1981 SYSTEM_VALUE_MAX
/**< Number of values */
1986 * The possible interpolation qualifiers that can be applied to a fragment
1987 * shader input in GLSL.
1989 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1990 * gl_fragment_program data structure to 0 causes the default behavior.
1992 enum glsl_interp_qualifier
1994 INTERP_QUALIFIER_NONE
= 0,
1995 INTERP_QUALIFIER_SMOOTH
,
1996 INTERP_QUALIFIER_FLAT
,
1997 INTERP_QUALIFIER_NOPERSPECTIVE
,
1998 INTERP_QUALIFIER_COUNT
/**< Number of interpolation qualifiers */
2003 * \brief Layout qualifiers for gl_FragDepth.
2005 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
2006 * a layout qualifier.
2008 * \see enum ir_depth_layout
2010 enum gl_frag_depth_layout
2012 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
2013 FRAG_DEPTH_LAYOUT_ANY
,
2014 FRAG_DEPTH_LAYOUT_GREATER
,
2015 FRAG_DEPTH_LAYOUT_LESS
,
2016 FRAG_DEPTH_LAYOUT_UNCHANGED
2021 * Base class for any kind of program object
2026 GLubyte
*String
; /**< Null-terminated program text */
2028 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2029 GLenum Format
; /**< String encoding format */
2031 struct prog_instruction
*Instructions
;
2033 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
2034 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
2035 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
2036 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
2037 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
2038 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
2039 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
2040 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
2042 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
2045 * For vertex and geometry shaders, true if the program uses the
2046 * gl_ClipDistance output. Ignored for fragment shaders.
2048 GLboolean UsesClipDistanceOut
;
2051 /** Named parameters, constants, etc. from program text */
2052 struct gl_program_parameter_list
*Parameters
;
2055 * Local parameters used by the program.
2057 * It's dynamically allocated because it is rarely used (just
2058 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
2061 GLfloat (*LocalParams
)[4];
2063 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2064 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2066 /** Bitmask of which register files are read/written with indirect
2067 * addressing. Mask of (1 << PROGRAM_x) bits.
2069 GLbitfield IndirectRegisterFiles
;
2071 /** Logical counts */
2073 GLuint NumInstructions
;
2074 GLuint NumTemporaries
;
2075 GLuint NumParameters
;
2076 GLuint NumAttributes
;
2077 GLuint NumAddressRegs
;
2078 GLuint NumAluInstructions
;
2079 GLuint NumTexInstructions
;
2080 GLuint NumTexIndirections
;
2082 /** Native, actual h/w counts */
2084 GLuint NumNativeInstructions
;
2085 GLuint NumNativeTemporaries
;
2086 GLuint NumNativeParameters
;
2087 GLuint NumNativeAttributes
;
2088 GLuint NumNativeAddressRegs
;
2089 GLuint NumNativeAluInstructions
;
2090 GLuint NumNativeTexInstructions
;
2091 GLuint NumNativeTexIndirections
;
2096 /** Vertex program object */
2097 struct gl_vertex_program
2099 struct gl_program Base
; /**< base class */
2100 GLboolean IsPositionInvariant
;
2104 /** Geometry program object */
2105 struct gl_geometry_program
2107 struct gl_program Base
; /**< base class */
2111 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2112 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2113 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2114 GLboolean UsesEndPrimitive
;
2118 /** Fragment program object */
2119 struct gl_fragment_program
2121 struct gl_program Base
; /**< base class */
2122 GLboolean UsesKill
; /**< shader uses KIL instruction */
2123 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
2124 GLboolean OriginUpperLeft
;
2125 GLboolean PixelCenterInteger
;
2126 enum gl_frag_depth_layout FragDepthLayout
;
2129 * GLSL interpolation qualifier associated with each fragment shader input.
2130 * For inputs that do not have an interpolation qualifier specified in
2131 * GLSL, the value is INTERP_QUALIFIER_NONE.
2133 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
2136 * Bitfield indicating, for each fragment shader input, 1 if that input
2137 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2139 GLbitfield64 IsCentroid
;
2142 * Bitfield indicating, for each fragment shader input, 1 if that input
2143 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2145 GLbitfield64 IsSample
;
2150 * State common to vertex and fragment programs.
2152 struct gl_program_state
2154 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2155 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2160 * Context state for vertex programs.
2162 struct gl_vertex_program_state
2164 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2165 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2166 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2167 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2168 /** Computed two sided lighting for fixed function/programs. */
2169 GLboolean _TwoSideEnabled
;
2170 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2172 /** Currently enabled and valid vertex program (including internal
2173 * programs, user-defined vertex programs and GLSL vertex shaders).
2174 * This is the program we must use when rendering.
2176 struct gl_vertex_program
*_Current
;
2178 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2180 /** Should fixed-function T&L be implemented with a vertex prog? */
2181 GLboolean _MaintainTnlProgram
;
2183 /** Program to emulate fixed-function T&L (see above) */
2184 struct gl_vertex_program
*_TnlProgram
;
2186 /** Cache of fixed-function programs */
2187 struct gl_program_cache
*Cache
;
2189 GLboolean _Overriden
;
2194 * Context state for geometry programs.
2196 struct gl_geometry_program_state
2198 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2199 GLboolean _Enabled
; /**< Enabled and valid program? */
2200 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2202 /** Currently enabled and valid program (including internal programs
2203 * and compiled shader programs).
2205 struct gl_geometry_program
*_Current
;
2207 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2209 /** Cache of fixed-function programs */
2210 struct gl_program_cache
*Cache
;
2214 * Context state for fragment programs.
2216 struct gl_fragment_program_state
2218 GLboolean Enabled
; /**< User-set fragment program enable flag */
2219 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2220 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2222 /** Currently enabled and valid fragment program (including internal
2223 * programs, user-defined fragment programs and GLSL fragment shaders).
2224 * This is the program we must use when rendering.
2226 struct gl_fragment_program
*_Current
;
2228 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2230 /** Should fixed-function texturing be implemented with a fragment prog? */
2231 GLboolean _MaintainTexEnvProgram
;
2233 /** Program to emulate fixed-function texture env/combine (see above) */
2234 struct gl_fragment_program
*_TexEnvProgram
;
2236 /** Cache of fixed-function programs */
2237 struct gl_program_cache
*Cache
;
2242 * ATI_fragment_shader runtime state
2244 #define ATI_FS_INPUT_PRIMARY 0
2245 #define ATI_FS_INPUT_SECONDARY 1
2247 struct atifs_instruction
;
2248 struct atifs_setupinst
;
2251 * ATI fragment shader
2253 struct ati_fragment_shader
2257 struct atifs_instruction
*Instructions
[2];
2258 struct atifs_setupinst
*SetupInst
[2];
2259 GLfloat Constants
[8][4];
2260 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2261 GLubyte numArithInstr
[2];
2262 GLubyte regsAssigned
[2];
2263 GLubyte NumPasses
; /**< 1 or 2 */
2265 GLubyte last_optype
;
2266 GLboolean interpinp1
;
2272 * Context state for GL_ATI_fragment_shader
2274 struct gl_ati_fragment_shader_state
2277 GLboolean _Enabled
; /**< enabled and valid shader? */
2278 GLboolean Compiling
;
2279 GLfloat GlobalConstants
[8][4];
2280 struct ati_fragment_shader
*Current
;
2284 /** Set by #pragma directives */
2285 struct gl_sl_pragmas
2287 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2288 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2289 GLboolean Optimize
; /**< defaults on */
2290 GLboolean Debug
; /**< defaults off */
2295 * A GLSL vertex or fragment shader object.
2299 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2300 * Must be the first field.
2303 GLuint Name
; /**< AKA the handle */
2304 GLchar
*Label
; /**< GL_KHR_debug */
2305 GLint RefCount
; /**< Reference count */
2306 GLboolean DeletePending
;
2307 GLboolean CompileStatus
;
2308 const GLchar
*Source
; /**< Source code string */
2309 GLuint SourceChecksum
; /**< for debug/logging purposes */
2310 struct gl_program
*Program
; /**< Post-compile assembly code */
2312 struct gl_sl_pragmas Pragmas
;
2314 unsigned Version
; /**< GLSL version used for linking */
2315 GLboolean IsES
; /**< True if this shader uses GLSL ES */
2318 * \name Sampler tracking
2320 * \note Each of these fields is only set post-linking.
2323 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2324 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2325 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2329 * Map from sampler unit to texture unit (set by glUniform1i())
2331 * A sampler unit is associated with each sampler uniform by the linker.
2332 * The sampler unit associated with each uniform is stored in the
2333 * \c gl_uniform_storage::sampler field.
2335 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2336 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2337 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2340 * Number of default uniform block components used by this shader.
2342 * This field is only set post-linking.
2344 unsigned num_uniform_components
;
2347 * Number of combined uniform components used by this shader.
2349 * This field is only set post-linking. It is the sum of the uniform block
2350 * sizes divided by sizeof(float), and num_uniform_compoennts.
2352 unsigned num_combined_uniform_components
;
2355 * This shader's uniform block information.
2357 * The offsets of the variables are assigned only for shaders in a program's
2360 struct gl_uniform_block
*UniformBlocks
;
2361 unsigned NumUniformBlocks
;
2363 struct exec_list
*ir
;
2364 struct glsl_symbol_table
*symbols
;
2366 bool uses_builtin_functions
;
2369 * Geometry shader state from GLSL 1.50 layout qualifiers.
2374 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2375 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2380 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2381 * it's not set in this shader.
2389 * Shader stages. Note that these will become 5 with tessellation.
2391 * The order must match how shaders are ordered in the pipeline.
2392 * The GLSL linker assumes that if i<j, then the j-th shader is
2393 * executed later than the i-th shader.
2397 MESA_SHADER_VERTEX
= 0,
2398 MESA_SHADER_GEOMETRY
= 1,
2399 MESA_SHADER_FRAGMENT
= 2,
2400 MESA_SHADER_TYPES
= 3
2404 struct gl_uniform_buffer_variable
2409 * Name of the uniform as seen by glGetUniformIndices.
2411 * glGetUniformIndices requires that the block instance index \b not be
2412 * present in the name of queried uniforms.
2415 * \c gl_uniform_buffer_variable::IndexName and
2416 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2420 const struct glsl_type
*Type
;
2421 unsigned int Offset
;
2426 enum gl_uniform_block_packing
2434 struct gl_uniform_block
2436 /** Declared name of the uniform block */
2439 /** Array of supplemental information about UBO ir_variables. */
2440 struct gl_uniform_buffer_variable
*Uniforms
;
2444 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2445 * with glBindBufferBase to bind a buffer object to this uniform block. When
2446 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2451 * Minimum size of a buffer object to back this uniform buffer
2452 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2454 GLuint UniformBufferSize
;
2457 * Layout specified in the shader
2459 * This isn't accessible through the API, but it is used while
2460 * cross-validating uniform blocks.
2462 enum gl_uniform_block_packing _Packing
;
2466 * Structure that represents a reference to an atomic buffer from some
2469 struct gl_active_atomic_buffer
2471 /** Uniform indices of the atomic counters declared within it. */
2475 /** Binding point index associated with it. */
2478 /** Minimum reasonable size it is expected to have. */
2481 /** Shader stages making use of it. */
2482 GLboolean StageReferences
[MESA_SHADER_TYPES
];
2486 * A GLSL program object.
2487 * Basically a linked collection of vertex and fragment shaders.
2489 struct gl_shader_program
2491 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2492 GLuint Name
; /**< aka handle or ID */
2493 GLchar
*Label
; /**< GL_KHR_debug */
2494 GLint RefCount
; /**< Reference count */
2495 GLboolean DeletePending
;
2498 * Is the application intending to glGetProgramBinary this program?
2500 GLboolean BinaryRetreivableHint
;
2503 * Flags that the linker should not reject the program if it lacks
2504 * a vertex or fragment shader. GLES2 doesn't allow separate
2505 * shader objects, and would reject them. However, we internally
2506 * build separate shader objects for fixed function programs, which
2507 * we use for drivers/common/meta.c and for handling
2508 * _mesa_update_state with no program bound (for example in
2511 GLboolean InternalSeparateShader
;
2513 GLuint NumShaders
; /**< number of attached shaders */
2514 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2517 * User-defined attribute bindings
2519 * These are set via \c glBindAttribLocation and are used to direct the
2520 * GLSL linker. These are \b not the values used in the compiled shader,
2521 * and they are \b not the values returned by \c glGetAttribLocation.
2523 struct string_to_uint_map
*AttributeBindings
;
2526 * User-defined fragment data bindings
2528 * These are set via \c glBindFragDataLocation and are used to direct the
2529 * GLSL linker. These are \b not the values used in the compiled shader,
2530 * and they are \b not the values returned by \c glGetFragDataLocation.
2532 struct string_to_uint_map
*FragDataBindings
;
2533 struct string_to_uint_map
*FragDataIndexBindings
;
2536 * Transform feedback varyings last specified by
2537 * glTransformFeedbackVaryings().
2539 * For the current set of transform feeedback varyings used for transform
2540 * feedback output, see LinkedTransformFeedback.
2545 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2546 } TransformFeedback
;
2548 /** Post-link transform feedback info. */
2549 struct gl_transform_feedback_info LinkedTransformFeedback
;
2551 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2552 enum gl_frag_depth_layout FragDepthLayout
;
2555 * Geometry shader state - copied into gl_geometry_program by
2556 * _mesa_copy_linked_program_data().
2561 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2562 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2563 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2565 * True if gl_ClipDistance is written to. Copied into
2566 * gl_geometry_program by _mesa_copy_linked_program_data().
2568 GLboolean UsesClipDistance
;
2569 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2570 0 if not present. */
2571 GLboolean UsesEndPrimitive
;
2574 /** Vertex shader state */
2577 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2578 * by _mesa_copy_linked_program_data().
2580 GLboolean UsesClipDistance
;
2581 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2582 0 if not present. */
2585 /* post-link info: */
2586 unsigned NumUserUniformStorage
;
2587 struct gl_uniform_storage
*UniformStorage
;
2590 * Size of the gl_ClipDistance array that is output from the last pipeline
2591 * stage before the fragment shader.
2593 unsigned LastClipDistanceArraySize
;
2595 struct gl_uniform_block
*UniformBlocks
;
2596 unsigned NumUniformBlocks
;
2599 * Scale factor for the uniform base location
2601 * This is used to generate locations (returned by \c glGetUniformLocation)
2602 * of uniforms. The base location of the uniform is multiplied by this
2603 * value, and the array index is added.
2609 * _mesa_uniform_merge_location_offset, _mesa_uniform_split_location_offset
2611 unsigned UniformLocationBaseScale
;
2614 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2615 * they're used in, or -1.
2617 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2618 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2620 int *UniformBlockStageIndex
[MESA_SHADER_TYPES
];
2623 * Map of active uniform names to locations
2625 * Maps any active uniform that is not an array element to a location.
2626 * Each active uniform, including individual structure members will appear
2627 * in this map. This roughly corresponds to the set of names that would be
2628 * enumerated by \c glGetActiveUniform.
2630 struct string_to_uint_map
*UniformHash
;
2632 struct gl_active_atomic_buffer
*AtomicBuffers
;
2633 unsigned NumAtomicBuffers
;
2635 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2636 GLboolean Validated
;
2637 GLboolean _Used
; /**< Ever used for drawing? */
2640 unsigned Version
; /**< GLSL version used for linking */
2641 GLboolean IsES
; /**< True if this program uses GLSL ES */
2644 * Per-stage shaders resulting from the first stage of linking.
2646 * Set of linked shaders for this program. The array is accessed using the
2647 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2650 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2654 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2655 #define GLSL_LOG 0x2 /**< Write shaders to files */
2656 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2657 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2658 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2659 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2660 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2661 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2662 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2663 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2667 * Context state for GLSL vertex/fragment shaders.
2669 struct gl_shader_state
2672 * Programs used for rendering
2674 * There is a separate program set for each shader stage. If
2675 * GL_EXT_separate_shader_objects is not supported, each of these must point
2676 * to \c NULL or to the same program.
2678 struct gl_shader_program
*CurrentVertexProgram
;
2679 struct gl_shader_program
*CurrentGeometryProgram
;
2680 struct gl_shader_program
*CurrentFragmentProgram
;
2682 struct gl_shader_program
*_CurrentFragmentProgram
;
2685 * Program used by glUniform calls.
2687 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2689 struct gl_shader_program
*ActiveProgram
;
2691 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2696 * Compiler options for a single GLSL shaders type
2698 struct gl_shader_compiler_options
2700 /** Driver-selectable options: */
2701 GLboolean EmitCondCodes
; /**< Use condition codes? */
2702 GLboolean EmitNoLoops
;
2703 GLboolean EmitNoFunctions
;
2704 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2705 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2706 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2707 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2708 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2711 * \name Forms of indirect addressing the driver cannot do.
2714 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2715 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2716 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2717 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2720 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2721 GLuint MaxUnrollIterations
;
2724 * Prefer DP4 instructions (rather than MUL/MAD) for matrix * vector
2725 * operations, such as position transformation.
2727 GLboolean PreferDP4
;
2729 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2734 * Occlusion/timer query object.
2736 struct gl_query_object
2738 GLenum Target
; /**< The query target, when active */
2739 GLuint Id
; /**< hash table ID/name */
2740 GLchar
*Label
; /**< GL_KHR_debug */
2741 GLuint64EXT Result
; /**< the counter */
2742 GLboolean Active
; /**< inside Begin/EndQuery */
2743 GLboolean Ready
; /**< result is ready? */
2744 GLboolean EverBound
;/**< has query object ever been bound */
2749 * Context state for query objects.
2751 struct gl_query_state
2753 struct _mesa_HashTable
*QueryObjects
;
2754 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2755 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2757 /** GL_NV_conditional_render */
2758 struct gl_query_object
*CondRenderQuery
;
2760 /** GL_EXT_transform_feedback */
2761 struct gl_query_object
*PrimitivesGenerated
;
2762 struct gl_query_object
*PrimitivesWritten
;
2764 /** GL_ARB_timer_query */
2765 struct gl_query_object
*TimeElapsed
;
2767 GLenum CondRenderMode
;
2771 /** Sync object state */
2772 struct gl_sync_object
2774 GLenum Type
; /**< GL_SYNC_FENCE */
2775 GLuint Name
; /**< Fence name */
2776 GLchar
*Label
; /**< GL_KHR_debug */
2777 GLint RefCount
; /**< Reference count */
2778 GLboolean DeletePending
; /**< Object was deleted while there were still
2779 * live references (e.g., sync not yet finished)
2781 GLenum SyncCondition
;
2782 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2783 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2788 * State which can be shared by multiple contexts:
2790 struct gl_shared_state
2792 _glthread_Mutex Mutex
; /**< for thread safety */
2793 GLint RefCount
; /**< Reference count */
2794 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2795 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2797 /** Default texture objects (shared by all texture units) */
2798 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2800 /** Fallback texture used when a bound texture is incomplete */
2801 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2804 * \name Thread safety and statechange notification for texture
2807 * \todo Improve the granularity of locking.
2810 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2811 GLuint TextureStateStamp
; /**< state notification for shared tex */
2814 /** Default buffer object for vertex arrays that aren't in VBOs */
2815 struct gl_buffer_object
*NullBufferObj
;
2818 * \name Vertex/geometry/fragment programs
2821 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2822 struct gl_vertex_program
*DefaultVertexProgram
;
2823 struct gl_fragment_program
*DefaultFragmentProgram
;
2824 struct gl_geometry_program
*DefaultGeometryProgram
;
2827 /* GL_ATI_fragment_shader */
2828 struct _mesa_HashTable
*ATIShaders
;
2829 struct ati_fragment_shader
*DefaultFragmentShader
;
2831 struct _mesa_HashTable
*BufferObjects
;
2833 /** Table of both gl_shader and gl_shader_program objects */
2834 struct _mesa_HashTable
*ShaderObjects
;
2836 /* GL_EXT_framebuffer_object */
2837 struct _mesa_HashTable
*RenderBuffers
;
2838 struct _mesa_HashTable
*FrameBuffers
;
2841 struct set
*SyncObjects
;
2843 /** GL_ARB_sampler_objects */
2844 struct _mesa_HashTable
*SamplerObjects
;
2847 * Some context in this share group was affected by a GPU reset
2849 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
2850 * been affected by a GPU reset must also return
2851 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
2853 * Once this field becomes true, it is never reset to false.
2855 bool ShareGroupReset
;
2861 * Renderbuffers represent drawing surfaces such as color, depth and/or
2862 * stencil. A framebuffer object has a set of renderbuffers.
2863 * Drivers will typically derive subclasses of this type.
2865 struct gl_renderbuffer
2867 _glthread_Mutex Mutex
; /**< for thread safety */
2868 GLuint ClassID
; /**< Useful for drivers */
2870 GLchar
*Label
; /**< GL_KHR_debug */
2872 GLuint Width
, Height
;
2874 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2875 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2877 * True for renderbuffers that wrap textures, giving the driver a chance to
2878 * flush render caches through the FinishRenderTexture hook.
2880 * Drivers may also set this on renderbuffers other than those generated by
2881 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2882 * called without a rb->TexImage.
2884 GLboolean NeedsFinishRenderTexture
;
2886 GLenum InternalFormat
; /**< The user-specified format */
2887 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2888 GL_STENCIL_INDEX. */
2889 gl_format Format
; /**< The actual renderbuffer memory format */
2891 * Pointer to the texture image if this renderbuffer wraps a texture,
2894 * Note that the reference on the gl_texture_object containing this
2895 * TexImage is held by the gl_renderbuffer_attachment.
2897 struct gl_texture_image
*TexImage
;
2899 /** Delete this renderbuffer */
2900 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
2902 /** Allocate new storage for this renderbuffer */
2903 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
2904 struct gl_renderbuffer
*rb
,
2905 GLenum internalFormat
,
2906 GLuint width
, GLuint height
);
2911 * A renderbuffer attachment points to either a texture object (and specifies
2912 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2914 struct gl_renderbuffer_attachment
2916 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2920 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2921 * application supplied renderbuffer object.
2923 struct gl_renderbuffer
*Renderbuffer
;
2926 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2927 * supplied texture object.
2929 struct gl_texture_object
*Texture
;
2930 GLuint TextureLevel
; /**< Attached mipmap level. */
2931 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2932 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2933 * and 2D array textures */
2939 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2940 * In C++ terms, think of this as a base class from which device drivers
2941 * will make derived classes.
2943 struct gl_framebuffer
2945 _glthread_Mutex Mutex
; /**< for thread safety */
2947 * If zero, this is a window system framebuffer. If non-zero, this
2948 * is a FBO framebuffer; note that for some devices (i.e. those with
2949 * a natural pixel coordinate system for FBOs that differs from the
2950 * OpenGL/Mesa coordinate system), this means that the viewport,
2951 * polygon face orientation, and polygon stipple will have to be inverted.
2954 GLchar
*Label
; /**< GL_KHR_debug */
2957 GLboolean DeletePending
;
2960 * The framebuffer's visual. Immutable if this is a window system buffer.
2961 * Computed from attachments if user-made FBO.
2963 struct gl_config Visual
;
2965 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2967 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2969 GLint _Xmin
, _Xmax
; /**< inclusive */
2970 GLint _Ymin
, _Ymax
; /**< exclusive */
2973 /** \name Derived Z buffer stuff */
2975 GLuint _DepthMax
; /**< Max depth buffer value */
2976 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2977 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2980 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2983 /** Integer color values */
2984 GLboolean _IntegerColor
;
2986 /* ARB_color_buffer_float */
2987 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
2988 GLboolean _HasSNormOrFloatColorBuffer
;
2990 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2991 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2993 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2994 * attribute group and GL_PIXEL attribute group, respectively.
2996 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2997 GLenum ColorReadBuffer
;
2999 /** Computed from ColorDraw/ReadBuffer above */
3000 GLuint _NumColorDrawBuffers
;
3001 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3002 GLint _ColorReadBufferIndex
; /* -1 = None */
3003 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3004 struct gl_renderbuffer
*_ColorReadBuffer
;
3007 * The number of layers in the framebuffer, or 0 if the framebuffer is not
3008 * layered. For cube maps, this value is 6. For cube map arrays, this
3009 * value is the "depth" value passed to TexImage3D (always a multiple of
3014 /** Delete this framebuffer */
3015 void (*Delete
)(struct gl_framebuffer
*fb
);
3020 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3024 GLushort RangeMin
; /**< min value exponent */
3025 GLushort RangeMax
; /**< max value exponent */
3026 GLushort Precision
; /**< number of mantissa bits */
3031 * Limits for vertex, geometry and fragment programs/shaders.
3033 struct gl_program_constants
3035 /* logical limits */
3036 GLuint MaxInstructions
;
3037 GLuint MaxAluInstructions
;
3038 GLuint MaxTexInstructions
;
3039 GLuint MaxTexIndirections
;
3042 GLuint MaxAddressRegs
;
3043 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3044 GLuint MaxParameters
;
3045 GLuint MaxLocalParams
;
3046 GLuint MaxEnvParams
;
3047 /* native/hardware limits */
3048 GLuint MaxNativeInstructions
;
3049 GLuint MaxNativeAluInstructions
;
3050 GLuint MaxNativeTexInstructions
;
3051 GLuint MaxNativeTexIndirections
;
3052 GLuint MaxNativeAttribs
;
3053 GLuint MaxNativeTemps
;
3054 GLuint MaxNativeAddressRegs
;
3055 GLuint MaxNativeParameters
;
3057 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3060 * \name Per-stage input / output limits
3062 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3063 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3064 * ES). This is stored as \c gl_constants::MaxVarying.
3066 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3067 * variables. Each stage as a certain number of outputs that it can feed
3068 * to the next stage and a certain number inputs that it can consume from
3069 * the previous stage.
3071 * Vertex shader inputs do not participate this in this accounting.
3072 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3074 * Fragment shader outputs do not participate this in this accounting.
3075 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3078 GLuint MaxInputComponents
;
3079 GLuint MaxOutputComponents
;
3082 /* ES 2.0 and GL_ARB_ES2_compatibility */
3083 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3084 struct gl_precision LowInt
, MediumInt
, HighInt
;
3085 /* GL_ARB_uniform_buffer_object */
3086 GLuint MaxUniformBlocks
;
3087 GLuint MaxCombinedUniformComponents
;
3088 GLuint MaxTextureImageUnits
;
3089 /* GL_ARB_shader_atomic_counters */
3090 GLuint MaxAtomicBuffers
;
3091 GLuint MaxAtomicCounters
;
3096 * Constants which may be overridden by device driver during context creation
3097 * but are never changed after that.
3101 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3102 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3103 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3104 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3105 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3106 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3107 GLuint MaxTextureCoordUnits
;
3108 GLuint MaxCombinedTextureImageUnits
;
3109 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3110 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3111 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3112 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3114 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3116 GLuint MaxArrayLockSize
;
3120 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3121 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3122 GLfloat PointSizeGranularity
;
3123 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3124 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3125 GLfloat LineWidthGranularity
;
3127 GLuint MaxClipPlanes
;
3129 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3130 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3132 GLuint MaxViewportWidth
, MaxViewportHeight
;
3134 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
3135 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
3136 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
3137 GLuint MaxProgramMatrices
;
3138 GLuint MaxProgramMatrixStackDepth
;
3141 GLuint SamplesPassed
;
3144 GLuint PrimitivesGenerated
;
3145 GLuint PrimitivesWritten
;
3148 /** vertex array / buffer object bounds checking */
3149 GLboolean CheckArrayBounds
;
3151 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3153 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3154 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3155 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3157 /** Number of varying vectors between any two shader stages. */
3161 * GL_ARB_uniform_buffer_object
3163 GLuint MaxCombinedUniformBlocks
;
3164 GLuint MaxUniformBufferBindings
;
3165 GLuint MaxUniformBlockSize
;
3166 GLuint UniformBufferOffsetAlignment
;
3169 /** GL_ARB_geometry_shader4 */
3170 GLuint MaxGeometryOutputVertices
;
3171 GLuint MaxGeometryTotalOutputComponents
;
3173 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
3176 * Changes default GLSL extension behavior from "error" to "warn". It's out
3177 * of spec, but it can make some apps work that otherwise wouldn't.
3179 GLboolean ForceGLSLExtensionsWarn
;
3182 * If non-zero, forces GLSL shaders without the #version directive to behave
3183 * as if they began with "#version ForceGLSLVersion".
3185 GLuint ForceGLSLVersion
;
3188 * Does the driver support real 32-bit integers? (Otherwise, integers are
3189 * simulated via floats.)
3191 GLboolean NativeIntegers
;
3194 * If the driver supports real 32-bit integers, what integer value should be
3195 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3197 GLuint UniformBooleanTrue
;
3199 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
3200 GLbitfield SupportedBumpUnits
;
3203 * Maximum amount of time, measured in nanseconds, that the server can wait.
3205 GLuint64 MaxServerWaitTimeout
;
3207 /** GL_EXT_provoking_vertex */
3208 GLboolean QuadsFollowProvokingVertexConvention
;
3210 /** OpenGL version 3.0 */
3211 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3213 /** OpenGL version 3.2 */
3214 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3216 /** GL_EXT_transform_feedback */
3217 GLuint MaxTransformFeedbackBuffers
;
3218 GLuint MaxTransformFeedbackSeparateComponents
;
3219 GLuint MaxTransformFeedbackInterleavedComponents
;
3220 GLuint MaxVertexStreams
;
3222 /** GL_EXT_gpu_shader4 */
3223 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3225 /** GL_ARB_texture_gather */
3226 GLuint MinProgramTextureGatherOffset
;
3227 GLuint MaxProgramTextureGatherOffset
;
3228 GLuint MaxProgramTextureGatherComponents
;
3230 /* GL_ARB_robustness */
3231 GLenum ResetStrategy
;
3233 /* GL_ARB_blend_func_extended */
3234 GLuint MaxDualSourceDrawBuffers
;
3237 * Whether the implementation strips out and ignores texture borders.
3239 * Many GPU hardware implementations don't support rendering with texture
3240 * borders and mipmapped textures. (Note: not static border color, but the
3241 * old 1-pixel border around each edge). Implementations then have to do
3242 * slow fallbacks to be correct, or just ignore the border and be fast but
3243 * wrong. Setting the flag strips the border off of TexImage calls,
3244 * providing "fast but wrong" at significantly reduced driver complexity.
3246 * Texture borders are deprecated in GL 3.0.
3248 GLboolean StripTextureBorder
;
3251 * For drivers which can do a better job at eliminating unused uniforms
3252 * than the GLSL compiler.
3254 * XXX Remove these as soon as a better solution is available.
3256 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3259 * Force software support for primitive restart in the VBO module.
3261 GLboolean PrimitiveRestartInSoftware
;
3264 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3265 * than passing the transform feedback object to the drawing function.
3267 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3269 /** GL_ARB_map_buffer_alignment */
3270 GLuint MinMapBufferAlignment
;
3273 * Disable varying packing. This is out of spec, but potentially useful
3274 * for older platforms that supports a limited number of texture
3275 * indirections--on these platforms, unpacking the varyings in the fragment
3276 * shader increases the number of texture indirections by 1, which might
3277 * make some shaders not executable at all.
3279 * Drivers that support transform feedback must set this value to GL_FALSE.
3281 GLboolean DisableVaryingPacking
;
3284 * Maximum value supported for an index in DrawElements and friends.
3286 * This must be at least (1ull<<24)-1. The default value is
3289 * \since ES 3.0 or GL_ARB_ES3_compatibility
3290 * \sa _mesa_init_constants
3292 GLuint64 MaxElementIndex
;
3295 * Disable interpretation of line continuations (lines ending with a
3296 * backslash character ('\') in GLSL source.
3298 GLboolean DisableGLSLLineContinuations
;
3300 /** GL_ARB_texture_multisample */
3301 GLint MaxColorTextureSamples
;
3302 GLint MaxDepthTextureSamples
;
3303 GLint MaxIntegerSamples
;
3305 /** GL_ARB_shader_atomic_counters */
3306 GLuint MaxAtomicBufferBindings
;
3307 GLuint MaxAtomicBufferSize
;
3308 GLuint MaxCombinedAtomicBuffers
;
3309 GLuint MaxCombinedAtomicCounters
;
3311 /** GL_ARB_vertex_attrib_binding */
3312 GLint MaxVertexAttribRelativeOffset
;
3313 GLint MaxVertexAttribBindings
;
3318 * Enable flag for each OpenGL extension. Different device drivers will
3319 * enable different extensions at runtime.
3321 struct gl_extensions
3323 GLboolean dummy
; /* don't remove this! */
3324 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3325 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3326 GLboolean ANGLE_texture_compression_dxt
;
3327 GLboolean ARB_ES2_compatibility
;
3328 GLboolean ARB_ES3_compatibility
;
3329 GLboolean ARB_base_instance
;
3330 GLboolean ARB_blend_func_extended
;
3331 GLboolean ARB_color_buffer_float
;
3332 GLboolean ARB_conservative_depth
;
3333 GLboolean ARB_depth_buffer_float
;
3334 GLboolean ARB_depth_clamp
;
3335 GLboolean ARB_depth_texture
;
3336 GLboolean ARB_draw_buffers_blend
;
3337 GLboolean ARB_draw_elements_base_vertex
;
3338 GLboolean ARB_draw_indirect
;
3339 GLboolean ARB_draw_instanced
;
3340 GLboolean ARB_fragment_coord_conventions
;
3341 GLboolean ARB_fragment_program
;
3342 GLboolean ARB_fragment_program_shadow
;
3343 GLboolean ARB_fragment_shader
;
3344 GLboolean ARB_framebuffer_object
;
3345 GLboolean ARB_explicit_attrib_location
;
3346 GLboolean ARB_geometry_shader4
;
3347 GLboolean ARB_gpu_shader5
;
3348 GLboolean ARB_half_float_pixel
;
3349 GLboolean ARB_half_float_vertex
;
3350 GLboolean ARB_instanced_arrays
;
3351 GLboolean ARB_internalformat_query
;
3352 GLboolean ARB_map_buffer_alignment
;
3353 GLboolean ARB_map_buffer_range
;
3354 GLboolean ARB_occlusion_query
;
3355 GLboolean ARB_occlusion_query2
;
3356 GLboolean ARB_point_sprite
;
3357 GLboolean ARB_sample_shading
;
3358 GLboolean ARB_seamless_cube_map
;
3359 GLboolean ARB_shader_atomic_counters
;
3360 GLboolean ARB_shader_bit_encoding
;
3361 GLboolean ARB_shader_stencil_export
;
3362 GLboolean ARB_shader_texture_lod
;
3363 GLboolean ARB_shading_language_packing
;
3364 GLboolean ARB_shading_language_420pack
;
3365 GLboolean ARB_shadow
;
3367 GLboolean ARB_texture_border_clamp
;
3368 GLboolean ARB_texture_buffer_object
;
3369 GLboolean ARB_texture_buffer_object_rgb32
;
3370 GLboolean ARB_texture_buffer_range
;
3371 GLboolean ARB_texture_compression_rgtc
;
3372 GLboolean ARB_texture_cube_map
;
3373 GLboolean ARB_texture_cube_map_array
;
3374 GLboolean ARB_texture_env_combine
;
3375 GLboolean ARB_texture_env_crossbar
;
3376 GLboolean ARB_texture_env_dot3
;
3377 GLboolean ARB_texture_float
;
3378 GLboolean ARB_texture_gather
;
3379 GLboolean ARB_texture_mirror_clamp_to_edge
;
3380 GLboolean ARB_texture_multisample
;
3381 GLboolean ARB_texture_non_power_of_two
;
3382 GLboolean ARB_texture_query_levels
;
3383 GLboolean ARB_texture_query_lod
;
3384 GLboolean ARB_texture_rg
;
3385 GLboolean ARB_texture_rgb10_a2ui
;
3386 GLboolean ARB_texture_view
;
3387 GLboolean ARB_timer_query
;
3388 GLboolean ARB_transform_feedback2
;
3389 GLboolean ARB_transform_feedback3
;
3390 GLboolean ARB_transform_feedback_instanced
;
3391 GLboolean ARB_uniform_buffer_object
;
3392 GLboolean ARB_vertex_program
;
3393 GLboolean ARB_vertex_shader
;
3394 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3395 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3396 GLboolean EXT_blend_color
;
3397 GLboolean EXT_blend_equation_separate
;
3398 GLboolean EXT_blend_func_separate
;
3399 GLboolean EXT_blend_minmax
;
3400 GLboolean EXT_depth_bounds_test
;
3401 GLboolean EXT_draw_buffers2
;
3402 GLboolean EXT_framebuffer_blit
;
3403 GLboolean EXT_framebuffer_multisample
;
3404 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3405 GLboolean EXT_framebuffer_sRGB
;
3406 GLboolean EXT_gpu_program_parameters
;
3407 GLboolean EXT_gpu_shader4
;
3408 GLboolean EXT_packed_depth_stencil
;
3409 GLboolean EXT_packed_float
;
3410 GLboolean EXT_pixel_buffer_object
;
3411 GLboolean EXT_point_parameters
;
3412 GLboolean EXT_provoking_vertex
;
3413 GLboolean EXT_separate_shader_objects
;
3414 GLboolean EXT_shader_integer_mix
;
3415 GLboolean EXT_stencil_two_side
;
3416 GLboolean EXT_texture3D
;
3417 GLboolean EXT_texture_array
;
3418 GLboolean EXT_texture_compression_latc
;
3419 GLboolean EXT_texture_compression_s3tc
;
3420 GLboolean EXT_texture_env_dot3
;
3421 GLboolean EXT_texture_filter_anisotropic
;
3422 GLboolean EXT_texture_integer
;
3423 GLboolean EXT_texture_mirror_clamp
;
3424 GLboolean EXT_texture_shared_exponent
;
3425 GLboolean EXT_texture_snorm
;
3426 GLboolean EXT_texture_sRGB
;
3427 GLboolean EXT_texture_sRGB_decode
;
3428 GLboolean EXT_texture_swizzle
;
3429 GLboolean EXT_transform_feedback
;
3430 GLboolean EXT_timer_query
;
3431 GLboolean EXT_vertex_array_bgra
;
3432 GLboolean OES_standard_derivatives
;
3433 /* vendor extensions */
3434 GLboolean AMD_performance_monitor
;
3435 GLboolean AMD_seamless_cubemap_per_texture
;
3436 GLboolean AMD_vertex_shader_layer
;
3437 GLboolean APPLE_object_purgeable
;
3438 GLboolean ATI_envmap_bumpmap
;
3439 GLboolean ATI_texture_compression_3dc
;
3440 GLboolean ATI_texture_mirror_once
;
3441 GLboolean ATI_texture_env_combine3
;
3442 GLboolean ATI_fragment_shader
;
3443 GLboolean ATI_separate_stencil
;
3444 GLboolean MESA_pack_invert
;
3445 GLboolean MESA_ycbcr_texture
;
3446 GLboolean NV_conditional_render
;
3447 GLboolean NV_fog_distance
;
3448 GLboolean NV_fragment_program_option
;
3449 GLboolean NV_point_sprite
;
3450 GLboolean NV_primitive_restart
;
3451 GLboolean NV_texture_barrier
;
3452 GLboolean NV_texture_env_combine4
;
3453 GLboolean NV_texture_rectangle
;
3454 GLboolean NV_vdpau_interop
;
3455 GLboolean TDFX_texture_compression_FXT1
;
3456 GLboolean OES_EGL_image
;
3457 GLboolean OES_draw_texture
;
3458 GLboolean OES_depth_texture_cube_map
;
3459 GLboolean OES_EGL_image_external
;
3460 GLboolean OES_compressed_ETC1_RGB8_texture
;
3461 GLboolean extension_sentinel
;
3462 /** The extension string */
3463 const GLubyte
*String
;
3464 /** Number of supported extensions */
3470 * A stack of matrices (projection, modelview, color, texture, etc).
3472 struct gl_matrix_stack
3474 GLmatrix
*Top
; /**< points into Stack */
3475 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3476 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3477 GLuint MaxDepth
; /**< size of Stack[] array */
3478 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3483 * \name Bits for image transfer operations
3484 * \sa __struct gl_contextRec::ImageTransferState.
3487 #define IMAGE_SCALE_BIAS_BIT 0x1
3488 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3489 #define IMAGE_MAP_COLOR_BIT 0x4
3490 #define IMAGE_CLAMP_BIT 0x800
3493 /** Pixel Transfer ops */
3494 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3495 IMAGE_SHIFT_OFFSET_BIT | \
3496 IMAGE_MAP_COLOR_BIT)
3499 * \name Bits to indicate what state has changed.
3502 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3503 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3504 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3505 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3506 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3507 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3508 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3509 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3510 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3511 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3512 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3513 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3514 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3515 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3516 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3517 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3518 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3519 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3520 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3521 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3522 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3523 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3524 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3525 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3526 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3527 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3528 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3529 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3530 #define _NEW_BUFFER_OBJECT (1 << 28)
3531 #define _NEW_FRAG_CLAMP (1 << 29)
3532 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3533 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3539 * Composite state flags
3542 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3548 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3558 /* This has to be included here. */
3563 * Display list flags.
3564 * Strictly this is a tnl-private concept, but it doesn't seem
3565 * worthwhile adding a tnl private structure just to hold this one bit
3568 #define DLIST_DANGLING_REFS 0x1
3571 /** Opaque declaration of display list payload data type */
3572 union gl_dlist_node
;
3576 * Provide a location where information about a display list can be
3577 * collected. Could be extended with driverPrivate structures,
3578 * etc. in the future.
3580 struct gl_display_list
3583 GLchar
*Label
; /**< GL_KHR_debug */
3584 GLbitfield Flags
; /**< DLIST_x flags */
3585 /** The dlist commands are in a linked list of nodes */
3586 union gl_dlist_node
*Head
;
3591 * State used during display list compilation and execution.
3593 struct gl_dlist_state
3595 GLuint CallDepth
; /**< Current recursion calling depth */
3597 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3598 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3599 GLuint CurrentPos
; /**< Index into current block of nodes */
3601 GLvertexformat ListVtxfmt
;
3603 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3604 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3606 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3607 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3610 /* State known to have been set by the currently-compiling display
3611 * list. Used to eliminate some redundant state changes.
3619 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3620 * to small enums suitable for use as an array index.
3623 enum mesa_debug_source
{
3624 MESA_DEBUG_SOURCE_API
,
3625 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3626 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3627 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3628 MESA_DEBUG_SOURCE_APPLICATION
,
3629 MESA_DEBUG_SOURCE_OTHER
,
3630 MESA_DEBUG_SOURCE_COUNT
3633 enum mesa_debug_type
{
3634 MESA_DEBUG_TYPE_ERROR
,
3635 MESA_DEBUG_TYPE_DEPRECATED
,
3636 MESA_DEBUG_TYPE_UNDEFINED
,
3637 MESA_DEBUG_TYPE_PORTABILITY
,
3638 MESA_DEBUG_TYPE_PERFORMANCE
,
3639 MESA_DEBUG_TYPE_OTHER
,
3640 MESA_DEBUG_TYPE_MARKER
,
3641 MESA_DEBUG_TYPE_PUSH_GROUP
,
3642 MESA_DEBUG_TYPE_POP_GROUP
,
3643 MESA_DEBUG_TYPE_COUNT
3646 enum mesa_debug_severity
{
3647 MESA_DEBUG_SEVERITY_LOW
,
3648 MESA_DEBUG_SEVERITY_MEDIUM
,
3649 MESA_DEBUG_SEVERITY_HIGH
,
3650 MESA_DEBUG_SEVERITY_NOTIFICATION
,
3651 MESA_DEBUG_SEVERITY_COUNT
3657 * An error, warning, or other piece of debug information for an application
3658 * to consume via GL_ARB_debug_output/GL_KHR_debug.
3662 enum mesa_debug_source source
;
3663 enum mesa_debug_type type
;
3665 enum mesa_debug_severity severity
;
3670 struct gl_debug_namespace
3672 struct _mesa_HashTable
*IDs
;
3673 unsigned ZeroID
; /* a HashTable won't take zero, so store its state here */
3674 /** lists of IDs in the hash table at each severity */
3675 struct simple_node Severity
[MESA_DEBUG_SEVERITY_COUNT
];
3678 struct gl_debug_state
3680 GLDEBUGPROC Callback
;
3681 const void *CallbackData
;
3682 GLboolean SyncOutput
;
3683 GLboolean DebugOutput
;
3684 GLboolean ARBCallback
; /* Used to track if current callback is of type ARB_debug_output or KHR_debug */
3685 GLboolean Defaults
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SEVERITY_COUNT
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3686 struct gl_debug_namespace Namespaces
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3687 struct gl_debug_msg Log
[MAX_DEBUG_LOGGED_MESSAGES
];
3688 struct gl_debug_msg DebugGroupMsgs
[MAX_DEBUG_GROUP_STACK_DEPTH
];
3689 GLint GroupStackDepth
;
3692 GLint NextMsgLength
; /* redundant, but copied here from Log[NextMsg].length
3693 for the sake of the offsetof() code in get.c */
3697 * Enum for the OpenGL APIs we know about and may support.
3699 * NOTE: This must match the api_enum table in
3700 * src/mesa/main/get_hash_generator.py
3704 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
3708 API_OPENGL_LAST
= API_OPENGL_CORE
3712 * Driver-specific state flags.
3714 * These are or'd with gl_context::NewDriverState to notify a driver about
3715 * a state change. The driver sets the flags at context creation and
3716 * the meaning of the bits set is opaque to core Mesa.
3718 struct gl_driver_flags
3720 /** gl_context::Array::_DrawArrays (vertex array state) */
3721 GLbitfield NewArray
;
3723 /** gl_context::TransformFeedback::CurrentObject */
3724 GLbitfield NewTransformFeedback
;
3726 /** gl_context::RasterDiscard */
3727 GLbitfield NewRasterizerDiscard
;
3730 * gl_context::UniformBufferBindings
3731 * gl_shader_program::UniformBlocks
3733 GLbitfield NewUniformBuffer
;
3736 * gl_context::AtomicBufferBindings
3738 GLbitfield NewAtomicBuffer
;
3741 struct gl_uniform_buffer_binding
3743 struct gl_buffer_object
*BufferObject
;
3744 /** Start of uniform block data in the buffer */
3746 /** Size of data allowed to be referenced from the buffer (in bytes) */
3749 * glBindBufferBase() indicates that the Size should be ignored and only
3750 * limited by the current size of the BufferObject.
3752 GLboolean AutomaticSize
;
3756 * Binding point for an atomic counter buffer object.
3758 struct gl_atomic_buffer_binding
3760 struct gl_buffer_object
*BufferObject
;
3766 * Mesa rendering context.
3768 * This is the central context data structure for Mesa. Almost all
3769 * OpenGL state is contained in this structure.
3770 * Think of this as a base class from which device drivers will derive
3775 /** State possibly shared with other contexts in the address space */
3776 struct gl_shared_state
*Shared
;
3778 /** \name API function pointer tables */
3782 * The current dispatch table for non-displaylist-saving execution, either
3783 * BeginEnd or OutsideBeginEnd
3785 struct _glapi_table
*Exec
;
3787 * The normal dispatch table for non-displaylist-saving, non-begin/end
3789 struct _glapi_table
*OutsideBeginEnd
;
3790 /** The dispatch table used between glNewList() and glEndList() */
3791 struct _glapi_table
*Save
;
3793 * The dispatch table used between glBegin() and glEnd() (outside of a
3794 * display list). Only valid functions between those two are set, which is
3795 * mostly just the set in a GLvertexformat struct.
3797 struct _glapi_table
*BeginEnd
;
3799 * Tracks the current dispatch table out of the 3 above, so that it can be
3800 * re-set on glXMakeCurrent().
3802 struct _glapi_table
*CurrentDispatch
;
3805 struct gl_config Visual
;
3806 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3807 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3808 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3809 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3812 * Device driver function pointer table
3814 struct dd_function_table Driver
;
3816 /** Core/Driver constants */
3817 struct gl_constants Const
;
3819 /** \name The various 4x4 matrix stacks */
3821 struct gl_matrix_stack ModelviewMatrixStack
;
3822 struct gl_matrix_stack ProjectionMatrixStack
;
3823 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3824 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3825 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3828 /** Combined modelview and projection matrix */
3829 GLmatrix _ModelProjectMatrix
;
3831 /** \name Display lists */
3832 struct gl_dlist_state ListState
;
3834 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3835 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3837 /** Extension information */
3838 struct gl_extensions Extensions
;
3840 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3842 char *VersionString
;
3844 /** \name State attribute stack (for glPush/PopAttrib) */
3846 GLuint AttribStackDepth
;
3847 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3850 /** \name Renderer attribute groups
3852 * We define a struct for each attribute group to make pushing and popping
3853 * attributes easy. Also it's a good organization.
3856 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3857 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3858 struct gl_current_attrib Current
; /**< Current attributes */
3859 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3860 struct gl_eval_attrib Eval
; /**< Eval attributes */
3861 struct gl_fog_attrib Fog
; /**< Fog attributes */
3862 struct gl_hint_attrib Hint
; /**< Hint attributes */
3863 struct gl_light_attrib Light
; /**< Light attributes */
3864 struct gl_line_attrib Line
; /**< Line attributes */
3865 struct gl_list_attrib List
; /**< List attributes */
3866 struct gl_multisample_attrib Multisample
;
3867 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3868 struct gl_point_attrib Point
; /**< Point attributes */
3869 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3870 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3871 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3872 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3873 struct gl_texture_attrib Texture
; /**< Texture attributes */
3874 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3875 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3878 /** \name Client attribute stack */
3880 GLuint ClientAttribStackDepth
;
3881 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3884 /** \name Client attribute groups */
3886 struct gl_array_attrib Array
; /**< Vertex arrays */
3887 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3888 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3889 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3892 /** \name Other assorted state (not pushed/popped on attribute stack) */
3894 struct gl_pixelmaps PixelMaps
;
3896 struct gl_evaluators EvalMap
; /**< All evaluators */
3897 struct gl_feedback Feedback
; /**< Feedback */
3898 struct gl_selection Select
; /**< Selection */
3900 struct gl_program_state Program
; /**< general program state */
3901 struct gl_vertex_program_state VertexProgram
;
3902 struct gl_fragment_program_state FragmentProgram
;
3903 struct gl_geometry_program_state GeometryProgram
;
3904 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3906 struct gl_shader_state Shader
; /**< GLSL shader object state */
3907 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3909 struct gl_query_state Query
; /**< occlusion, timer queries */
3911 struct gl_transform_feedback_state TransformFeedback
;
3913 struct gl_perf_monitor_state PerfMonitor
;
3915 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
3917 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3918 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3921 * Current GL_ARB_uniform_buffer_object binding referenced by
3922 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
3924 struct gl_buffer_object
*UniformBuffer
;
3927 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
3928 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
3929 * associated with uniform blocks by glUniformBlockBinding()'s state in the
3932 struct gl_uniform_buffer_binding
3933 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
3936 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
3939 struct gl_buffer_object
*AtomicBuffer
;
3942 * Array of atomic counter buffer binding points.
3944 struct gl_atomic_buffer_binding
3945 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
3949 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3951 /* GL_EXT_framebuffer_object */
3952 struct gl_renderbuffer
*CurrentRenderbuffer
;
3954 GLenum ErrorValue
; /**< Last error code */
3957 * Recognize and silence repeated error debug messages in buggy apps.
3959 const char *ErrorDebugFmtString
;
3960 GLuint ErrorDebugCount
;
3962 /* GL_ARB_debug_output/GL_KHR_debug */
3963 struct gl_debug_state Debug
;
3965 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3966 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3967 GLbitfield NewDriverState
;/**< bitwise-or of flags from DriverFlags */
3969 struct gl_driver_flags DriverFlags
;
3971 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3973 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3975 /** \name Derived state */
3976 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3977 GLfloat _EyeZDir
[3];
3978 GLfloat _ModelViewInvScale
;
3979 GLboolean _NeedEyeCoords
;
3980 GLboolean _ForceEyeCoords
;
3982 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3984 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3986 /** \name For debugging/development only */
3988 GLboolean FirstTimeCurrent
;
3991 /** software compression/decompression supported or not */
3992 GLboolean Mesa_DXTn
;
3994 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3996 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
3999 * \name Hooks for module contexts.
4001 * These will eventually live in the driver or elsewhere.
4004 void *swrast_context
;
4005 void *swsetup_context
;
4006 void *swtnl_context
;
4007 struct vbo_context
*vbo_context
;
4008 struct st_context
*st
;
4013 * \name NV_vdpau_interop
4016 const void *vdpDevice
;
4017 const void *vdpGetProcAddress
;
4018 struct set
*vdpSurfaces
;
4022 * Has this context observed a GPU reset in any context in the share group?
4024 * Once this field becomes true, it is never reset to false.
4026 GLboolean ShareGroupReset
;
4031 extern int MESA_VERBOSE
;
4032 extern int MESA_DEBUG_FLAGS
;
4033 # define MESA_FUNCTION __FUNCTION__
4035 # define MESA_VERBOSE 0
4036 # define MESA_DEBUG_FLAGS 0
4037 # define MESA_FUNCTION "a function"
4044 /** The MESA_VERBOSE var is a bitmask of these flags */
4047 VERBOSE_VARRAY
= 0x0001,
4048 VERBOSE_TEXTURE
= 0x0002,
4049 VERBOSE_MATERIAL
= 0x0004,
4050 VERBOSE_PIPELINE
= 0x0008,
4051 VERBOSE_DRIVER
= 0x0010,
4052 VERBOSE_STATE
= 0x0020,
4053 VERBOSE_API
= 0x0040,
4054 VERBOSE_DISPLAY_LIST
= 0x0100,
4055 VERBOSE_LIGHTING
= 0x0200,
4056 VERBOSE_PRIMS
= 0x0400,
4057 VERBOSE_VERTS
= 0x0800,
4058 VERBOSE_DISASSEM
= 0x1000,
4059 VERBOSE_DRAW
= 0x2000,
4060 VERBOSE_SWAPBUFFERS
= 0x4000
4064 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4067 DEBUG_SILENT
= (1 << 0),
4068 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4069 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4070 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4079 #endif /* MTYPES_H */