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_VIEWPORT
, /* Appears as VS or GS output */
239 VARYING_SLOT_FACE
, /* FS only */
240 VARYING_SLOT_PNTC
, /* FS only */
241 VARYING_SLOT_VAR0
, /* First generic varying slot */
242 VARYING_SLOT_MAX
= VARYING_SLOT_VAR0
+ MAX_VARYING
247 * Bitflags for varying slots.
250 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
251 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
252 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
253 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
254 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
255 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
256 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
257 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
258 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
259 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
260 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
261 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
262 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
263 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
264 MAX_TEXTURE_COORD_UNITS)
265 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
266 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
267 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
268 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
269 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
270 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
271 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
272 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
273 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
274 #define VARYING_BIT_VIEWPORT BITFIELD64_BIT(VARYING_SLOT_VIEWPORT)
275 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
276 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
277 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
281 * Bitflags for system values.
283 #define SYSTEM_BIT_SAMPLE_ID BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_ID)
284 #define SYSTEM_BIT_SAMPLE_POS BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_POS)
285 #define SYSTEM_BIT_SAMPLE_MASK_IN BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_MASK_IN)
288 * Determine if the given gl_varying_slot appears in the fragment shader.
290 static inline GLboolean
291 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
294 case VARYING_SLOT_PSIZ
:
295 case VARYING_SLOT_BFC0
:
296 case VARYING_SLOT_BFC1
:
297 case VARYING_SLOT_EDGE
:
298 case VARYING_SLOT_CLIP_VERTEX
:
299 case VARYING_SLOT_LAYER
:
308 * Fragment program results
312 FRAG_RESULT_DEPTH
= 0,
313 FRAG_RESULT_STENCIL
= 1,
314 /* If a single color should be written to all render targets, this
315 * register is written. No FRAG_RESULT_DATAn will be written.
317 FRAG_RESULT_COLOR
= 2,
318 FRAG_RESULT_SAMPLE_MASK
= 3,
320 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
321 * or ARB_fragment_program fragment.color[n]) color results. If
322 * any are written, FRAG_RESULT_COLOR will not be written.
324 FRAG_RESULT_DATA0
= 4,
325 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
330 * Indexes for all renderbuffers
334 /* the four standard color buffers */
342 /* optional aux buffer */
344 /* generic renderbuffers */
357 * Bit flags for all renderbuffers
359 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
360 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
361 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
362 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
363 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
364 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
365 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
366 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
367 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
368 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
369 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
370 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
371 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
372 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
373 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
374 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
375 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
376 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
377 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
380 * Mask of all the color buffer bits (but not accum).
382 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
383 BUFFER_BIT_BACK_LEFT | \
384 BUFFER_BIT_FRONT_RIGHT | \
385 BUFFER_BIT_BACK_RIGHT | \
387 BUFFER_BIT_COLOR0 | \
388 BUFFER_BIT_COLOR1 | \
389 BUFFER_BIT_COLOR2 | \
390 BUFFER_BIT_COLOR3 | \
391 BUFFER_BIT_COLOR4 | \
392 BUFFER_BIT_COLOR5 | \
393 BUFFER_BIT_COLOR6 | \
398 * Shader stages. Note that these will become 5 with tessellation.
400 * The order must match how shaders are ordered in the pipeline.
401 * The GLSL linker assumes that if i<j, then the j-th shader is
402 * executed later than the i-th shader.
406 MESA_SHADER_VERTEX
= 0,
407 MESA_SHADER_GEOMETRY
= 1,
408 MESA_SHADER_FRAGMENT
= 2,
409 MESA_SHADER_COMPUTE
= 3,
412 #define MESA_SHADER_STAGES (MESA_SHADER_COMPUTE + 1)
416 * Framebuffer configuration (aka visual / pixelformat)
417 * Note: some of these fields should be boolean, but it appears that
418 * code in drivers/dri/common/util.c requires int-sized fields.
424 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
425 GLuint doubleBufferMode
;
428 GLboolean haveAccumBuffer
;
429 GLboolean haveDepthBuffer
;
430 GLboolean haveStencilBuffer
;
432 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
433 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
434 GLint rgbBits
; /* total bits for rgb */
435 GLint indexBits
; /* total bits for colorindex */
437 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
445 /* EXT_visual_rating / GLX 1.2 */
448 /* EXT_visual_info / GLX 1.2 */
449 GLint transparentPixel
;
450 /* colors are floats scaled to ints */
451 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
452 GLint transparentIndex
;
454 /* ARB_multisample / SGIS_multisample */
458 /* SGIX_pbuffer / GLX 1.3 */
459 GLint maxPbufferWidth
;
460 GLint maxPbufferHeight
;
461 GLint maxPbufferPixels
;
462 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
463 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
465 /* OML_swap_method */
468 /* EXT_texture_from_pixmap */
469 GLint bindToTextureRgb
;
470 GLint bindToTextureRgba
;
471 GLint bindToMipmapTexture
;
472 GLint bindToTextureTargets
;
475 /* EXT_framebuffer_sRGB */
481 * \name Bit flags used for updating material values.
484 #define MAT_ATTRIB_FRONT_AMBIENT 0
485 #define MAT_ATTRIB_BACK_AMBIENT 1
486 #define MAT_ATTRIB_FRONT_DIFFUSE 2
487 #define MAT_ATTRIB_BACK_DIFFUSE 3
488 #define MAT_ATTRIB_FRONT_SPECULAR 4
489 #define MAT_ATTRIB_BACK_SPECULAR 5
490 #define MAT_ATTRIB_FRONT_EMISSION 6
491 #define MAT_ATTRIB_BACK_EMISSION 7
492 #define MAT_ATTRIB_FRONT_SHININESS 8
493 #define MAT_ATTRIB_BACK_SHININESS 9
494 #define MAT_ATTRIB_FRONT_INDEXES 10
495 #define MAT_ATTRIB_BACK_INDEXES 11
496 #define MAT_ATTRIB_MAX 12
498 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
499 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
500 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
501 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
502 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
503 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
505 #define MAT_INDEX_AMBIENT 0
506 #define MAT_INDEX_DIFFUSE 1
507 #define MAT_INDEX_SPECULAR 2
509 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
510 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
511 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
512 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
513 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
514 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
515 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
516 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
517 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
518 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
519 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
520 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
523 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
524 MAT_BIT_FRONT_AMBIENT | \
525 MAT_BIT_FRONT_DIFFUSE | \
526 MAT_BIT_FRONT_SPECULAR | \
527 MAT_BIT_FRONT_SHININESS | \
528 MAT_BIT_FRONT_INDEXES)
530 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
531 MAT_BIT_BACK_AMBIENT | \
532 MAT_BIT_BACK_DIFFUSE | \
533 MAT_BIT_BACK_SPECULAR | \
534 MAT_BIT_BACK_SHININESS | \
535 MAT_BIT_BACK_INDEXES)
537 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
546 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
554 #define LIGHT_SPOT 0x1
555 #define LIGHT_LOCAL_VIEWER 0x2
556 #define LIGHT_POSITIONAL 0x4
557 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
562 * Light source state.
566 struct gl_light
*next
; /**< double linked list with sentinel */
567 struct gl_light
*prev
;
569 GLfloat Ambient
[4]; /**< ambient color */
570 GLfloat Diffuse
[4]; /**< diffuse color */
571 GLfloat Specular
[4]; /**< specular color */
572 GLfloat EyePosition
[4]; /**< position in eye coordinates */
573 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
574 GLfloat SpotExponent
;
575 GLfloat SpotCutoff
; /**< in degrees */
576 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
577 GLfloat ConstantAttenuation
;
578 GLfloat LinearAttenuation
;
579 GLfloat QuadraticAttenuation
;
580 GLboolean Enabled
; /**< On/off flag */
583 * \name Derived fields
586 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
588 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
589 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
590 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
591 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
592 GLfloat _VP_inf_spot_attenuation
;
594 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
595 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
596 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
606 GLfloat Ambient
[4]; /**< ambient color */
607 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
608 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
609 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
610 * or GL_SEPARATE_SPECULAR_COLOR */
615 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
617 struct gl_accum_attrib
619 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
624 * Used for storing clear color, texture border color, etc.
625 * The float values are typically unclamped.
636 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
638 struct gl_colorbuffer_attrib
640 GLuint ClearIndex
; /**< Index for glClear */
641 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
642 GLuint IndexMask
; /**< Color index write mask */
643 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
645 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
648 * \name alpha testing
651 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
652 GLenum AlphaFunc
; /**< Alpha test function */
653 GLfloat AlphaRefUnclamped
;
654 GLclampf AlphaRef
; /**< Alpha reference value */
661 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
663 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
664 * control, only on the fixed-pointness of the render target.
665 * The query does however depend on fragment color clamping.
667 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
668 GLfloat BlendColor
[4]; /**< Blending color */
672 GLenum SrcRGB
; /**< RGB blend source term */
673 GLenum DstRGB
; /**< RGB blend dest term */
674 GLenum SrcA
; /**< Alpha blend source term */
675 GLenum DstA
; /**< Alpha blend dest term */
676 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
677 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
679 * Set if any blend factor uses SRC1. Computed at the time blend factors
682 GLboolean _UsesDualSrc
;
683 } Blend
[MAX_DRAW_BUFFERS
];
684 /** Are the blend func terms currently different for each buffer/target? */
685 GLboolean _BlendFuncPerBuffer
;
686 /** Are the blend equations currently different for each buffer/target? */
687 GLboolean _BlendEquationPerBuffer
;
694 GLenum LogicOp
; /**< Logic operator */
695 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
696 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
699 GLboolean DitherFlag
; /**< Dither enable flag */
701 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
702 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
703 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
705 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
710 * Current attribute group (GL_CURRENT_BIT).
712 struct gl_current_attrib
715 * \name Current vertex attributes.
716 * \note Values are valid only after FLUSH_VERTICES has been called.
717 * \note Index and Edgeflag current values are stored as floats in the
718 * SIX and SEVEN attribute slots.
720 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
723 * \name Current raster position attributes (always valid).
724 * \note This set of attributes is very similar to the SWvertex struct.
727 GLfloat RasterPos
[4];
728 GLfloat RasterDistance
;
729 GLfloat RasterColor
[4];
730 GLfloat RasterSecondaryColor
[4];
731 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
732 GLboolean RasterPosValid
;
738 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
740 struct gl_depthbuffer_attrib
742 GLenum Func
; /**< Function for depth buffer compare */
743 GLclampd Clear
; /**< Value to clear depth buffer to */
744 GLboolean Test
; /**< Depth buffering enabled flag */
745 GLboolean Mask
; /**< Depth buffer writable? */
746 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
747 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
752 * Evaluator attribute group (GL_EVAL_BIT).
754 struct gl_eval_attrib
760 GLboolean Map1Color4
;
762 GLboolean Map1Normal
;
763 GLboolean Map1TextureCoord1
;
764 GLboolean Map1TextureCoord2
;
765 GLboolean Map1TextureCoord3
;
766 GLboolean Map1TextureCoord4
;
767 GLboolean Map1Vertex3
;
768 GLboolean Map1Vertex4
;
769 GLboolean Map2Color4
;
771 GLboolean Map2Normal
;
772 GLboolean Map2TextureCoord1
;
773 GLboolean Map2TextureCoord2
;
774 GLboolean Map2TextureCoord3
;
775 GLboolean Map2TextureCoord4
;
776 GLboolean Map2Vertex3
;
777 GLboolean Map2Vertex4
;
778 GLboolean AutoNormal
;
782 * \name Map Grid endpoints and divisions and calculated du values
786 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
787 GLint MapGrid2un
, MapGrid2vn
;
788 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
789 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
795 * Fog attribute group (GL_FOG_BIT).
799 GLboolean Enabled
; /**< Fog enabled flag */
800 GLfloat ColorUnclamped
[4]; /**< Fog color */
801 GLfloat Color
[4]; /**< Fog color */
802 GLfloat Density
; /**< Density >= 0.0 */
803 GLfloat Start
; /**< Start distance in eye coords */
804 GLfloat End
; /**< End distance in eye coords */
805 GLfloat Index
; /**< Fog index */
806 GLenum Mode
; /**< Fog mode */
807 GLboolean ColorSumEnabled
;
808 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
809 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
810 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
815 * Hint attribute group (GL_HINT_BIT).
817 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
819 struct gl_hint_attrib
821 GLenum PerspectiveCorrection
;
824 GLenum PolygonSmooth
;
826 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
827 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
828 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
833 * Lighting attribute group (GL_LIGHT_BIT).
835 struct gl_light_attrib
837 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
838 struct gl_lightmodel Model
; /**< Lighting model */
841 * Front and back material values.
842 * Note: must call FLUSH_VERTICES() before using.
844 struct gl_material Material
;
846 GLboolean Enabled
; /**< Lighting enabled flag */
847 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
848 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
849 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
850 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
851 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
852 GLboolean ColorMaterialEnabled
;
853 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
854 GLboolean _ClampVertexColor
;
856 struct gl_light EnabledList
; /**< List sentinel */
859 * Derived state for optimizations:
862 GLboolean _NeedEyeCoords
;
863 GLboolean _NeedVertices
; /**< Use fast shader? */
864 GLfloat _BaseColor
[2][3];
870 * Line attribute group (GL_LINE_BIT).
872 struct gl_line_attrib
874 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
875 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
876 GLushort StipplePattern
; /**< Stipple pattern */
877 GLint StippleFactor
; /**< Stipple repeat factor */
878 GLfloat Width
; /**< Line width */
883 * Display list attribute group (GL_LIST_BIT).
885 struct gl_list_attrib
892 * Multisample attribute group (GL_MULTISAMPLE_BIT).
894 struct gl_multisample_attrib
897 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
898 GLboolean SampleAlphaToCoverage
;
899 GLboolean SampleAlphaToOne
;
900 GLboolean SampleCoverage
;
901 GLfloat SampleCoverageValue
;
902 GLboolean SampleCoverageInvert
;
903 GLboolean SampleShading
;
904 GLfloat MinSampleShadingValue
;
906 /* ARB_texture_multisample / GL3.2 additions */
907 GLboolean SampleMask
;
908 /** The GL spec defines this as an array but >32x MSAA is madness */
909 GLbitfield SampleMaskValue
;
914 * A pixelmap (see glPixelMap)
919 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
924 * Collection of all pixelmaps
928 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
929 struct gl_pixelmap GtoG
;
930 struct gl_pixelmap BtoB
;
931 struct gl_pixelmap AtoA
;
932 struct gl_pixelmap ItoR
;
933 struct gl_pixelmap ItoG
;
934 struct gl_pixelmap ItoB
;
935 struct gl_pixelmap ItoA
;
936 struct gl_pixelmap ItoI
;
937 struct gl_pixelmap StoS
;
942 * Pixel attribute group (GL_PIXEL_MODE_BIT).
944 struct gl_pixel_attrib
946 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
948 /*--- Begin Pixel Transfer State ---*/
949 /* Fields are in the order in which they're applied... */
951 /** Scale & Bias (index shift, offset) */
953 GLfloat RedBias
, RedScale
;
954 GLfloat GreenBias
, GreenScale
;
955 GLfloat BlueBias
, BlueScale
;
956 GLfloat AlphaBias
, AlphaScale
;
957 GLfloat DepthBias
, DepthScale
;
958 GLint IndexShift
, IndexOffset
;
962 /* Note: actual pixel maps are not part of this attrib group */
963 GLboolean MapColorFlag
;
964 GLboolean MapStencilFlag
;
966 /*--- End Pixel Transfer State ---*/
969 GLfloat ZoomX
, ZoomY
;
974 * Point attribute group (GL_POINT_BIT).
976 struct gl_point_attrib
978 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
979 GLfloat Size
; /**< User-specified point size */
980 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
981 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
982 GLfloat Threshold
; /**< GL_EXT_point_parameters */
983 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
984 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
985 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
986 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
987 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
992 * Polygon attribute group (GL_POLYGON_BIT).
994 struct gl_polygon_attrib
996 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
997 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
998 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
999 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1000 GLboolean CullFlag
; /**< Culling on/off flag */
1001 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1002 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1003 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1004 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1005 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1006 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1007 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1008 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1013 * Scissor attributes (GL_SCISSOR_BIT).
1015 struct gl_scissor_rect
1017 GLint X
, Y
; /**< Lower left corner of box */
1018 GLsizei Width
, Height
; /**< Size of box */
1020 struct gl_scissor_attrib
1022 GLbitfield EnableFlags
; /**< Scissor test enabled? */
1023 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
1028 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1030 * Three sets of stencil data are tracked so that OpenGL 2.0,
1031 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1032 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1033 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1034 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1035 * GL_EXT_stencil_two_side GL_BACK state.
1037 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1038 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1040 * The derived value \c _TestTwoSide is set when the front-face and back-face
1041 * stencil state are different.
1043 struct gl_stencil_attrib
1045 GLboolean Enabled
; /**< Enabled flag */
1046 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1047 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1048 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1049 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1050 GLboolean _TestTwoSide
;
1051 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1052 GLenum Function
[3]; /**< Stencil function */
1053 GLenum FailFunc
[3]; /**< Fail function */
1054 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1055 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1056 GLint Ref
[3]; /**< Reference value */
1057 GLuint ValueMask
[3]; /**< Value mask */
1058 GLuint WriteMask
[3]; /**< Write mask */
1059 GLuint Clear
; /**< Clear value */
1064 * An index for each type of texture object. These correspond to the GL
1065 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1066 * Note: the order is from highest priority to lowest priority.
1070 TEXTURE_2D_MULTISAMPLE_INDEX
,
1071 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1072 TEXTURE_CUBE_ARRAY_INDEX
,
1073 TEXTURE_BUFFER_INDEX
,
1074 TEXTURE_2D_ARRAY_INDEX
,
1075 TEXTURE_1D_ARRAY_INDEX
,
1076 TEXTURE_EXTERNAL_INDEX
,
1087 * Bit flags for each type of texture object
1088 * Used for Texture.Unit[]._ReallyEnabled flags.
1091 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1092 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1093 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1094 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1095 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1096 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1097 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1098 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1099 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1100 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1101 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1102 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1107 * Texture image state. Drivers will typically create a subclass of this
1108 * with extra fields for memory buffers, etc.
1110 struct gl_texture_image
1112 GLint InternalFormat
; /**< Internal format as given by the user */
1113 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1114 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1115 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1116 * GL_DEPTH_STENCIL_EXT only. Used for
1117 * choosing TexEnv arithmetic.
1119 mesa_format TexFormat
; /**< The actual texture memory format */
1121 GLuint Border
; /**< 0 or 1 */
1122 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1123 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1124 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1125 GLuint Width2
; /**< = Width - 2*Border */
1126 GLuint Height2
; /**< = Height - 2*Border */
1127 GLuint Depth2
; /**< = Depth - 2*Border */
1128 GLuint WidthLog2
; /**< = log2(Width2) */
1129 GLuint HeightLog2
; /**< = log2(Height2) */
1130 GLuint DepthLog2
; /**< = log2(Depth2) */
1131 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1132 levels, computed from the dimensions */
1134 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1135 GLuint Level
; /**< Which mipmap level am I? */
1136 /** Cube map face: index into gl_texture_object::Image[] array */
1139 /** GL_ARB_texture_multisample */
1140 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1141 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1146 * Indexes for cube map faces.
1161 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1162 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1164 struct gl_sampler_object
1168 GLchar
*Label
; /**< GL_KHR_debug */
1170 GLenum WrapS
; /**< S-axis texture image wrap mode */
1171 GLenum WrapT
; /**< T-axis texture image wrap mode */
1172 GLenum WrapR
; /**< R-axis texture image wrap mode */
1173 GLenum MinFilter
; /**< minification filter */
1174 GLenum MagFilter
; /**< magnification filter */
1175 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1176 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1177 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1178 GLfloat LodBias
; /**< OpenGL 1.4 */
1179 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1180 GLenum CompareMode
; /**< GL_ARB_shadow */
1181 GLenum CompareFunc
; /**< GL_ARB_shadow */
1182 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1183 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1188 * Texture object state. Contains the array of mipmap images, border color,
1189 * wrap modes, filter modes, and shadow/texcompare state.
1191 struct gl_texture_object
1193 mtx_t Mutex
; /**< for thread safety */
1194 GLint RefCount
; /**< reference count */
1195 GLuint Name
; /**< the user-visible texture object ID */
1196 GLchar
*Label
; /**< GL_KHR_debug */
1197 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1199 struct gl_sampler_object Sampler
;
1201 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1202 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
1204 GLfloat Priority
; /**< in [0,1] */
1205 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1206 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1207 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1208 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1209 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1210 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1211 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1212 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1213 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1214 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1215 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1216 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1217 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1218 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1220 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1222 GLuint MinLevel
; /**< GL_ARB_texture_view */
1223 GLuint MinLayer
; /**< GL_ARB_texture_view */
1224 GLuint NumLevels
; /**< GL_ARB_texture_view */
1225 GLuint NumLayers
; /**< GL_ARB_texture_view */
1227 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1228 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1230 /** GL_ARB_texture_buffer_object */
1231 struct gl_buffer_object
*BufferObject
;
1232 GLenum BufferObjectFormat
;
1233 /** Equivalent Mesa format for BufferObjectFormat. */
1234 mesa_format _BufferObjectFormat
;
1235 /** GL_ARB_texture_buffer_range */
1236 GLintptr BufferOffset
;
1237 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1239 /** GL_OES_EGL_image_external */
1240 GLint RequiredTextureImageUnits
;
1242 /** GL_ARB_shader_image_load_store */
1243 GLenum ImageFormatCompatibilityType
;
1247 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1248 #define MAX_COMBINER_TERMS 4
1252 * Texture combine environment state.
1254 struct gl_tex_env_combine_state
1256 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1257 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1258 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1259 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1260 GLenum SourceA
[MAX_COMBINER_TERMS
];
1261 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1262 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1263 GLenum OperandA
[MAX_COMBINER_TERMS
];
1264 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1265 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1266 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1267 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1272 * TexGenEnabled flags.
1279 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1284 * Bit flag versions of the corresponding GL_ constants.
1287 #define TEXGEN_SPHERE_MAP 0x1
1288 #define TEXGEN_OBJ_LINEAR 0x2
1289 #define TEXGEN_EYE_LINEAR 0x4
1290 #define TEXGEN_REFLECTION_MAP_NV 0x8
1291 #define TEXGEN_NORMAL_MAP_NV 0x10
1293 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1294 TEXGEN_REFLECTION_MAP_NV | \
1295 TEXGEN_NORMAL_MAP_NV)
1296 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1297 TEXGEN_REFLECTION_MAP_NV | \
1298 TEXGEN_NORMAL_MAP_NV | \
1304 /** Tex-gen enabled for texture unit? */
1305 #define ENABLE_TEXGEN(unit) (1 << (unit))
1307 /** Non-identity texture matrix for texture unit? */
1308 #define ENABLE_TEXMAT(unit) (1 << (unit))
1312 * Texture coord generation state.
1316 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1317 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1318 GLfloat ObjectPlane
[4];
1319 GLfloat EyePlane
[4];
1324 * Texture unit state. Contains enable flags, texture environment/function/
1325 * combiners, texgen state, and pointers to current texture objects.
1327 struct gl_texture_unit
1329 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1330 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1332 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1333 GLclampf EnvColor
[4];
1334 GLfloat EnvColorUnclamped
[4];
1336 struct gl_texgen GenS
;
1337 struct gl_texgen GenT
;
1338 struct gl_texgen GenR
;
1339 struct gl_texgen GenQ
;
1340 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1341 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1343 GLfloat LodBias
; /**< for biasing mipmap levels */
1345 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1347 /** Current sampler object (GL_ARB_sampler_objects) */
1348 struct gl_sampler_object
*Sampler
;
1351 * \name GL_EXT_texture_env_combine
1353 struct gl_tex_env_combine_state Combine
;
1356 * Derived state based on \c EnvMode and the \c BaseFormat of the
1357 * currently enabled texture.
1359 struct gl_tex_env_combine_state _EnvMode
;
1362 * Currently enabled combiner state. This will point to either
1363 * \c Combine or \c _EnvMode.
1365 struct gl_tex_env_combine_state
*_CurrentCombine
;
1367 /** Current texture object pointers */
1368 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1370 /** Points to highest priority, complete and enabled texture object */
1371 struct gl_texture_object
*_Current
;
1376 * Texture attribute group (GL_TEXTURE_BIT).
1378 struct gl_texture_attrib
1380 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1381 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1383 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1385 /** GL_ARB_texture_buffer_object */
1386 struct gl_buffer_object
*BufferObject
;
1388 /** GL_ARB_seamless_cubemap */
1389 GLboolean CubeMapSeamless
;
1391 /** Texture units/samplers used by vertex or fragment texturing */
1392 GLbitfield _EnabledUnits
;
1394 /** Texture coord units/sets used for fragment texturing */
1395 GLbitfield _EnabledCoordUnits
;
1397 /** Texture coord units that have texgen enabled */
1398 GLbitfield _TexGenEnabled
;
1400 /** Texture coord units that have non-identity matrices */
1401 GLbitfield _TexMatEnabled
;
1403 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1404 GLbitfield _GenFlags
;
1409 * Data structure representing a single clip plane (e.g. one of the elements
1410 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1412 typedef GLfloat gl_clip_plane
[4];
1416 * Transformation attribute group (GL_TRANSFORM_BIT).
1418 struct gl_transform_attrib
1420 GLenum MatrixMode
; /**< Matrix mode */
1421 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1422 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1423 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1424 GLboolean Normalize
; /**< Normalize all normals? */
1425 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1426 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1427 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1432 * Viewport attribute group (GL_VIEWPORT_BIT).
1434 struct gl_viewport_attrib
1436 GLfloat X
, Y
; /**< position */
1437 GLfloat Width
, Height
; /**< size */
1438 GLdouble Near
, Far
; /**< Depth buffer range */
1439 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1448 } gl_map_buffer_index
;
1452 * Fields describing a mapped buffer range.
1454 struct gl_buffer_mapping
{
1455 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1456 GLvoid
*Pointer
; /**< User-space address of mapping */
1457 GLintptr Offset
; /**< Mapped offset */
1458 GLsizeiptr Length
; /**< Mapped length */
1463 * GL_ARB_vertex/pixel_buffer_object buffer object
1465 struct gl_buffer_object
1470 GLchar
*Label
; /**< GL_KHR_debug */
1471 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1472 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1473 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1474 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1475 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1476 GLboolean Written
; /**< Ever written to? (for debugging) */
1477 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1478 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1480 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1485 * Client pixel packing/unpacking attributes
1487 struct gl_pixelstore_attrib
1495 GLboolean SwapBytes
;
1497 GLboolean Invert
; /**< GL_MESA_pack_invert */
1498 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1503 * Client vertex array attributes
1505 struct gl_client_array
1507 GLint Size
; /**< components per element (1,2,3,4) */
1508 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1509 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1510 GLsizei Stride
; /**< user-specified stride */
1511 GLsizei StrideB
; /**< actual stride in bytes */
1512 const GLubyte
*Ptr
; /**< Points to array data */
1513 GLboolean Enabled
; /**< Enabled flag is a boolean */
1514 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1515 GLboolean Integer
; /**< Integer-valued? */
1516 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1517 GLuint _ElementSize
; /**< size of each element in bytes */
1519 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1520 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1525 * Vertex attribute array as seen by the client.
1527 * Contains the size, type, format and normalization flag,
1528 * along with the index of a vertex buffer binding point.
1530 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1531 * and is only present for backwards compatibility reasons.
1532 * Rendering always uses VERTEX_BINDING_STRIDE.
1533 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1534 * and VERTEX_BINDING_STRIDE to the same value, while
1535 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1537 struct gl_vertex_attrib_array
1539 GLint Size
; /**< Components per element (1,2,3,4) */
1540 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1541 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1542 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1543 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1544 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1545 GLboolean Enabled
; /**< Whether the array is enabled */
1546 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1547 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1548 GLuint _ElementSize
; /**< Size of each element in bytes */
1549 GLuint VertexBinding
; /**< Vertex buffer binding */
1554 * This describes the buffer object used for a vertex array (or
1555 * multiple vertex arrays). If BufferObj points to the default/null
1556 * buffer object, then the vertex array lives in user memory and not a VBO.
1558 struct gl_vertex_buffer_binding
1560 GLintptr Offset
; /**< User-specified offset */
1561 GLsizei Stride
; /**< User-specified stride */
1562 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1563 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1564 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1569 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1570 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1573 struct gl_vertex_array_object
1575 /** Name of the VAO as received from glGenVertexArray. */
1577 GLchar
*Label
; /**< GL_KHR_debug */
1583 * Does the VAO use ARB semantics or Apple semantics?
1585 * There are several ways in which ARB_vertex_array_object and
1586 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1589 * - ARB VAOs require that all array data be sourced from vertex buffer
1590 * objects, but Apple VAOs do not.
1592 * - ARB VAOs require that names come from GenVertexArrays.
1594 * This flag notes which behavior governs this VAO.
1596 GLboolean ARBsemantics
;
1599 * Has this array object been bound?
1601 GLboolean EverBound
;
1604 * Derived vertex attribute arrays
1606 * This is a legacy data structure created from gl_vertex_attrib_array and
1607 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1609 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1611 /** Vertex attribute arrays */
1612 struct gl_vertex_attrib_array VertexAttrib
[VERT_ATTRIB_MAX
];
1614 /** Vertex buffer bindings */
1615 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1617 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1618 GLbitfield64 _Enabled
;
1620 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1621 GLbitfield64 NewArrays
;
1624 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1625 * we can determine the max legal (in bounds) glDrawElements array index.
1629 /** The index buffer (also known as the element array buffer in OpenGL). */
1630 struct gl_buffer_object
*IndexBufferObj
;
1635 * Vertex array state
1637 struct gl_array_attrib
1639 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1640 struct gl_vertex_array_object
*VAO
;
1642 /** The default vertex array object */
1643 struct gl_vertex_array_object
*DefaultVAO
;
1645 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1646 struct _mesa_HashTable
*Objects
;
1648 GLint ActiveTexture
; /**< Client Active Texture */
1649 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1650 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1653 * \name Primitive restart controls
1655 * Primitive restart is enabled if either \c PrimitiveRestart or
1656 * \c PrimitiveRestartFixedIndex is set.
1659 GLboolean PrimitiveRestart
;
1660 GLboolean PrimitiveRestartFixedIndex
;
1661 GLboolean _PrimitiveRestart
;
1662 GLuint RestartIndex
;
1665 /* GL_ARB_vertex_buffer_object */
1666 struct gl_buffer_object
*ArrayBufferObj
;
1669 * Vertex arrays as consumed by a driver.
1670 * The array pointer is set up only by the VBO module.
1672 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1677 * Feedback buffer state
1682 GLbitfield _Mask
; /**< FB_* bits */
1690 * Selection buffer state
1694 GLuint
*Buffer
; /**< selection buffer */
1695 GLuint BufferSize
; /**< size of the selection buffer */
1696 GLuint BufferCount
; /**< number of values in the selection buffer */
1697 GLuint Hits
; /**< number of records in the selection buffer */
1698 GLuint NameStackDepth
; /**< name stack depth */
1699 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1700 GLboolean HitFlag
; /**< hit flag */
1701 GLfloat HitMinZ
; /**< minimum hit depth */
1702 GLfloat HitMaxZ
; /**< maximum hit depth */
1707 * 1-D Evaluator control points
1711 GLuint Order
; /**< Number of control points */
1712 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1713 GLfloat
*Points
; /**< Points to contiguous control points */
1718 * 2-D Evaluator control points
1722 GLuint Uorder
; /**< Number of control points in U dimension */
1723 GLuint Vorder
; /**< Number of control points in V dimension */
1726 GLfloat
*Points
; /**< Points to contiguous control points */
1731 * All evaluator control point state
1733 struct gl_evaluators
1739 struct gl_1d_map Map1Vertex3
;
1740 struct gl_1d_map Map1Vertex4
;
1741 struct gl_1d_map Map1Index
;
1742 struct gl_1d_map Map1Color4
;
1743 struct gl_1d_map Map1Normal
;
1744 struct gl_1d_map Map1Texture1
;
1745 struct gl_1d_map Map1Texture2
;
1746 struct gl_1d_map Map1Texture3
;
1747 struct gl_1d_map Map1Texture4
;
1754 struct gl_2d_map Map2Vertex3
;
1755 struct gl_2d_map Map2Vertex4
;
1756 struct gl_2d_map Map2Index
;
1757 struct gl_2d_map Map2Color4
;
1758 struct gl_2d_map Map2Normal
;
1759 struct gl_2d_map Map2Texture1
;
1760 struct gl_2d_map Map2Texture2
;
1761 struct gl_2d_map Map2Texture3
;
1762 struct gl_2d_map Map2Texture4
;
1767 struct gl_transform_feedback_varying_info
1776 * Per-output info vertex shaders for transform feedback.
1778 struct gl_transform_feedback_output
1780 unsigned OutputRegister
;
1781 unsigned OutputBuffer
;
1782 unsigned NumComponents
;
1784 /** offset (in DWORDs) of this output within the interleaved structure */
1788 * Offset into the output register of the data to output. For example,
1789 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1790 * offset is in the y and z components of the output register.
1792 unsigned ComponentOffset
;
1796 /** Post-link transform feedback info. */
1797 struct gl_transform_feedback_info
1799 unsigned NumOutputs
;
1802 * Number of transform feedback buffers in use by this program.
1804 unsigned NumBuffers
;
1806 struct gl_transform_feedback_output
*Outputs
;
1808 /** Transform feedback varyings used for the linking of this shader program.
1810 * Use for glGetTransformFeedbackVarying().
1812 struct gl_transform_feedback_varying_info
*Varyings
;
1816 * Total number of components stored in each buffer. This may be used by
1817 * hardware back-ends to determine the correct stride when interleaving
1818 * multiple transform feedback outputs in the same buffer.
1820 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1825 * Transform feedback object state
1827 struct gl_transform_feedback_object
1829 GLuint Name
; /**< AKA the object ID */
1830 GLchar
*Label
; /**< GL_KHR_debug */
1832 GLboolean Active
; /**< Is transform feedback enabled? */
1833 GLboolean Paused
; /**< Is transform feedback paused? */
1834 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1836 GLboolean EverBound
; /**< Has this object been bound? */
1839 * The shader program active when BeginTransformFeedback() was called.
1840 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1841 * where stage is the pipeline stage that is the source of data for
1842 * transform feedback.
1844 struct gl_shader_program
*shader_program
;
1847 * GLES: if Active is true, remaining number of primitives which can be
1848 * rendered without overflow. This is necessary to track because GLES
1849 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1850 * glDrawArraysInstanced would overflow transform feedback buffers.
1851 * Undefined if Active is false.
1853 * Not tracked for desktop GL since it's unnecessary.
1855 unsigned GlesRemainingPrims
;
1857 /** The feedback buffers */
1858 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1859 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1861 /** Start of feedback data in dest buffer */
1862 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1865 * Max data to put into dest buffer (in bytes). Computed based on
1866 * RequestedSize and the actual size of the buffer.
1868 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1871 * Size that was specified when the buffer was bound. If the buffer was
1872 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1875 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1880 * Context state for transform feedback.
1882 struct gl_transform_feedback_state
1884 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1886 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1887 struct gl_buffer_object
*CurrentBuffer
;
1889 /** The table of all transform feedback objects */
1890 struct _mesa_HashTable
*Objects
;
1892 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1893 struct gl_transform_feedback_object
*CurrentObject
;
1895 /** The default xform-fb object (Name==0) */
1896 struct gl_transform_feedback_object
*DefaultObject
;
1901 * A "performance monitor" as described in AMD_performance_monitor.
1903 struct gl_perf_monitor_object
1907 /** True if the monitor is currently active (Begin called but not End). */
1911 * True if the monitor has ended.
1913 * This is distinct from !Active because it may never have began.
1918 * A list of groups with currently active counters.
1920 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1922 unsigned *ActiveGroups
;
1925 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1927 * Checking whether counter 'c' in group 'g' is active can be done via:
1929 * BITSET_TEST(ActiveCounters[g], c)
1931 GLuint
**ActiveCounters
;
1935 union gl_perf_monitor_counter_value
1943 struct gl_perf_monitor_counter
1945 /** Human readable name for the counter. */
1949 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1950 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1954 /** Minimum counter value. */
1955 union gl_perf_monitor_counter_value Minimum
;
1957 /** Maximum counter value. */
1958 union gl_perf_monitor_counter_value Maximum
;
1962 struct gl_perf_monitor_group
1964 /** Human readable name for the group. */
1968 * Maximum number of counters in this group which can be active at the
1971 GLuint MaxActiveCounters
;
1973 /** Array of counters within this group. */
1974 const struct gl_perf_monitor_counter
*Counters
;
1980 * Context state for AMD_performance_monitor.
1982 struct gl_perf_monitor_state
1984 /** Array of performance monitor groups (indexed by group ID) */
1985 const struct gl_perf_monitor_group
*Groups
;
1988 /** The table of all performance monitors. */
1989 struct _mesa_HashTable
*Monitors
;
1994 * Names of the various vertex/fragment program register files, etc.
1996 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1997 * All values should fit in a 4-bit field.
1999 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
2000 * considered to be "uniform" variables since they can only be set outside
2001 * glBegin/End. They're also all stored in the same Parameters array.
2005 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
2006 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
2007 PROGRAM_INPUT
, /**< machine->Inputs[] */
2008 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
2009 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
2010 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
2011 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
2012 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
2013 PROGRAM_ADDRESS
, /**< machine->AddressReg */
2014 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
2015 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
2016 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
2022 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
2023 * one of these values.
2027 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
2028 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
2029 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
2030 SYSTEM_VALUE_SAMPLE_ID
, /**< Fragment shader only */
2031 SYSTEM_VALUE_SAMPLE_POS
, /**< Fragment shader only */
2032 SYSTEM_VALUE_SAMPLE_MASK_IN
, /**< Fragment shader only */
2033 SYSTEM_VALUE_INVOCATION_ID
, /**< Geometry shader only */
2034 SYSTEM_VALUE_MAX
/**< Number of values */
2039 * The possible interpolation qualifiers that can be applied to a fragment
2040 * shader input in GLSL.
2042 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
2043 * gl_fragment_program data structure to 0 causes the default behavior.
2045 enum glsl_interp_qualifier
2047 INTERP_QUALIFIER_NONE
= 0,
2048 INTERP_QUALIFIER_SMOOTH
,
2049 INTERP_QUALIFIER_FLAT
,
2050 INTERP_QUALIFIER_NOPERSPECTIVE
,
2051 INTERP_QUALIFIER_COUNT
/**< Number of interpolation qualifiers */
2056 * \brief Layout qualifiers for gl_FragDepth.
2058 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
2059 * a layout qualifier.
2061 * \see enum ir_depth_layout
2063 enum gl_frag_depth_layout
2065 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
2066 FRAG_DEPTH_LAYOUT_ANY
,
2067 FRAG_DEPTH_LAYOUT_GREATER
,
2068 FRAG_DEPTH_LAYOUT_LESS
,
2069 FRAG_DEPTH_LAYOUT_UNCHANGED
2074 * Base class for any kind of program object
2079 GLubyte
*String
; /**< Null-terminated program text */
2081 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2082 GLenum Format
; /**< String encoding format */
2084 struct prog_instruction
*Instructions
;
2086 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
2087 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
2088 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
2089 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
2090 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
2091 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
2092 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
2093 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
2095 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
2098 * For vertex and geometry shaders, true if the program uses the
2099 * gl_ClipDistance output. Ignored for fragment shaders.
2101 GLboolean UsesClipDistanceOut
;
2104 /** Named parameters, constants, etc. from program text */
2105 struct gl_program_parameter_list
*Parameters
;
2108 * Local parameters used by the program.
2110 * It's dynamically allocated because it is rarely used (just
2111 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
2114 GLfloat (*LocalParams
)[4];
2116 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2117 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2119 /** Bitmask of which register files are read/written with indirect
2120 * addressing. Mask of (1 << PROGRAM_x) bits.
2122 GLbitfield IndirectRegisterFiles
;
2124 /** Logical counts */
2126 GLuint NumInstructions
;
2127 GLuint NumTemporaries
;
2128 GLuint NumParameters
;
2129 GLuint NumAttributes
;
2130 GLuint NumAddressRegs
;
2131 GLuint NumAluInstructions
;
2132 GLuint NumTexInstructions
;
2133 GLuint NumTexIndirections
;
2135 /** Native, actual h/w counts */
2137 GLuint NumNativeInstructions
;
2138 GLuint NumNativeTemporaries
;
2139 GLuint NumNativeParameters
;
2140 GLuint NumNativeAttributes
;
2141 GLuint NumNativeAddressRegs
;
2142 GLuint NumNativeAluInstructions
;
2143 GLuint NumNativeTexInstructions
;
2144 GLuint NumNativeTexIndirections
;
2149 /** Vertex program object */
2150 struct gl_vertex_program
2152 struct gl_program Base
; /**< base class */
2153 GLboolean IsPositionInvariant
;
2157 /** Geometry program object */
2158 struct gl_geometry_program
2160 struct gl_program Base
; /**< base class */
2165 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2166 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2167 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2168 GLboolean UsesEndPrimitive
;
2172 /** Fragment program object */
2173 struct gl_fragment_program
2175 struct gl_program Base
; /**< base class */
2176 GLboolean UsesKill
; /**< shader uses KIL instruction */
2177 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
2178 GLboolean OriginUpperLeft
;
2179 GLboolean PixelCenterInteger
;
2180 enum gl_frag_depth_layout FragDepthLayout
;
2183 * GLSL interpolation qualifier associated with each fragment shader input.
2184 * For inputs that do not have an interpolation qualifier specified in
2185 * GLSL, the value is INTERP_QUALIFIER_NONE.
2187 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
2190 * Bitfield indicating, for each fragment shader input, 1 if that input
2191 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2193 GLbitfield64 IsCentroid
;
2196 * Bitfield indicating, for each fragment shader input, 1 if that input
2197 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2199 GLbitfield64 IsSample
;
2203 /** Compute program object */
2204 struct gl_compute_program
2206 struct gl_program Base
; /**< base class */
2209 * Size specified using local_size_{x,y,z}.
2211 unsigned LocalSize
[3];
2216 * State common to vertex and fragment programs.
2218 struct gl_program_state
2220 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2221 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2226 * Context state for vertex programs.
2228 struct gl_vertex_program_state
2230 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2231 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2232 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2233 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2234 /** Computed two sided lighting for fixed function/programs. */
2235 GLboolean _TwoSideEnabled
;
2236 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2238 /** Currently enabled and valid vertex program (including internal
2239 * programs, user-defined vertex programs and GLSL vertex shaders).
2240 * This is the program we must use when rendering.
2242 struct gl_vertex_program
*_Current
;
2244 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2246 /** Should fixed-function T&L be implemented with a vertex prog? */
2247 GLboolean _MaintainTnlProgram
;
2249 /** Program to emulate fixed-function T&L (see above) */
2250 struct gl_vertex_program
*_TnlProgram
;
2252 /** Cache of fixed-function programs */
2253 struct gl_program_cache
*Cache
;
2255 GLboolean _Overriden
;
2260 * Context state for geometry programs.
2262 struct gl_geometry_program_state
2264 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2265 GLboolean _Enabled
; /**< Enabled and valid program? */
2266 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2268 /** Currently enabled and valid program (including internal programs
2269 * and compiled shader programs).
2271 struct gl_geometry_program
*_Current
;
2273 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2275 /** Cache of fixed-function programs */
2276 struct gl_program_cache
*Cache
;
2280 * Context state for fragment programs.
2282 struct gl_fragment_program_state
2284 GLboolean Enabled
; /**< User-set fragment program enable flag */
2285 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2286 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2288 /** Currently enabled and valid fragment program (including internal
2289 * programs, user-defined fragment programs and GLSL fragment shaders).
2290 * This is the program we must use when rendering.
2292 struct gl_fragment_program
*_Current
;
2294 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2296 /** Should fixed-function texturing be implemented with a fragment prog? */
2297 GLboolean _MaintainTexEnvProgram
;
2299 /** Program to emulate fixed-function texture env/combine (see above) */
2300 struct gl_fragment_program
*_TexEnvProgram
;
2302 /** Cache of fixed-function programs */
2303 struct gl_program_cache
*Cache
;
2308 * ATI_fragment_shader runtime state
2310 #define ATI_FS_INPUT_PRIMARY 0
2311 #define ATI_FS_INPUT_SECONDARY 1
2313 struct atifs_instruction
;
2314 struct atifs_setupinst
;
2317 * ATI fragment shader
2319 struct ati_fragment_shader
2323 struct atifs_instruction
*Instructions
[2];
2324 struct atifs_setupinst
*SetupInst
[2];
2325 GLfloat Constants
[8][4];
2326 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2327 GLubyte numArithInstr
[2];
2328 GLubyte regsAssigned
[2];
2329 GLubyte NumPasses
; /**< 1 or 2 */
2331 GLubyte last_optype
;
2332 GLboolean interpinp1
;
2338 * Context state for GL_ATI_fragment_shader
2340 struct gl_ati_fragment_shader_state
2343 GLboolean _Enabled
; /**< enabled and valid shader? */
2344 GLboolean Compiling
;
2345 GLfloat GlobalConstants
[8][4];
2346 struct ati_fragment_shader
*Current
;
2350 /** Set by #pragma directives */
2351 struct gl_sl_pragmas
2353 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2354 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2355 GLboolean Optimize
; /**< defaults on */
2356 GLboolean Debug
; /**< defaults off */
2361 * A GLSL vertex or fragment shader object.
2365 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2366 * Must be the first field.
2369 gl_shader_stage Stage
;
2370 GLuint Name
; /**< AKA the handle */
2371 GLchar
*Label
; /**< GL_KHR_debug */
2372 GLint RefCount
; /**< Reference count */
2373 GLboolean DeletePending
;
2374 GLboolean CompileStatus
;
2375 const GLchar
*Source
; /**< Source code string */
2376 GLuint SourceChecksum
; /**< for debug/logging purposes */
2377 struct gl_program
*Program
; /**< Post-compile assembly code */
2379 struct gl_sl_pragmas Pragmas
;
2381 unsigned Version
; /**< GLSL version used for linking */
2382 GLboolean IsES
; /**< True if this shader uses GLSL ES */
2385 * \name Sampler tracking
2387 * \note Each of these fields is only set post-linking.
2390 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2391 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2392 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2396 * Map from sampler unit to texture unit (set by glUniform1i())
2398 * A sampler unit is associated with each sampler uniform by the linker.
2399 * The sampler unit associated with each uniform is stored in the
2400 * \c gl_uniform_storage::sampler field.
2402 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2403 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2404 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2407 * Number of default uniform block components used by this shader.
2409 * This field is only set post-linking.
2411 unsigned num_uniform_components
;
2414 * Number of combined uniform components used by this shader.
2416 * This field is only set post-linking. It is the sum of the uniform block
2417 * sizes divided by sizeof(float), and num_uniform_compoennts.
2419 unsigned num_combined_uniform_components
;
2422 * This shader's uniform block information.
2424 * The offsets of the variables are assigned only for shaders in a program's
2427 struct gl_uniform_block
*UniformBlocks
;
2428 unsigned NumUniformBlocks
;
2430 struct exec_list
*ir
;
2431 struct glsl_symbol_table
*symbols
;
2433 bool uses_builtin_functions
;
2436 * Geometry shader state from GLSL 1.50 layout qualifiers.
2441 * 0 - Invocations count not declared in shader, or
2442 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2446 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2447 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2452 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2453 * it's not set in this shader.
2459 * Map from image uniform index to image unit (set by glUniform1i())
2461 * An image uniform index is associated with each image uniform by
2462 * the linker. The image index associated with each uniform is
2463 * stored in the \c gl_uniform_storage::image field.
2465 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2468 * Access qualifier specified in the shader for each image uniform
2469 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2472 * It may be different, though only more strict than the value of
2473 * \c gl_image_unit::Access for the corresponding image unit.
2475 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2478 * Number of image uniforms defined in the shader. It specifies
2479 * the number of valid elements in the \c ImageUnits and \c
2480 * ImageAccess arrays above.
2485 * Compute shader state from ARB_compute_shader layout qualifiers.
2489 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2490 * it's not set in this shader.
2492 unsigned LocalSize
[3];
2497 struct gl_uniform_buffer_variable
2502 * Name of the uniform as seen by glGetUniformIndices.
2504 * glGetUniformIndices requires that the block instance index \b not be
2505 * present in the name of queried uniforms.
2508 * \c gl_uniform_buffer_variable::IndexName and
2509 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2513 const struct glsl_type
*Type
;
2514 unsigned int Offset
;
2519 enum gl_uniform_block_packing
2527 struct gl_uniform_block
2529 /** Declared name of the uniform block */
2532 /** Array of supplemental information about UBO ir_variables. */
2533 struct gl_uniform_buffer_variable
*Uniforms
;
2537 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2538 * with glBindBufferBase to bind a buffer object to this uniform block. When
2539 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2544 * Minimum size of a buffer object to back this uniform buffer
2545 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2547 GLuint UniformBufferSize
;
2550 * Layout specified in the shader
2552 * This isn't accessible through the API, but it is used while
2553 * cross-validating uniform blocks.
2555 enum gl_uniform_block_packing _Packing
;
2559 * Structure that represents a reference to an atomic buffer from some
2562 struct gl_active_atomic_buffer
2564 /** Uniform indices of the atomic counters declared within it. */
2568 /** Binding point index associated with it. */
2571 /** Minimum reasonable size it is expected to have. */
2574 /** Shader stages making use of it. */
2575 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2579 * A GLSL program object.
2580 * Basically a linked collection of vertex and fragment shaders.
2582 struct gl_shader_program
2584 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2585 GLuint Name
; /**< aka handle or ID */
2586 GLchar
*Label
; /**< GL_KHR_debug */
2587 GLint RefCount
; /**< Reference count */
2588 GLboolean DeletePending
;
2591 * Is the application intending to glGetProgramBinary this program?
2593 GLboolean BinaryRetreivableHint
;
2596 * Flags that the linker should not reject the program if it lacks
2597 * a vertex or fragment shader. GLES2 doesn't allow separate
2598 * shader objects, and would reject them. However, we internally
2599 * build separate shader objects for fixed function programs, which
2600 * we use for drivers/common/meta.c and for handling
2601 * _mesa_update_state with no program bound (for example in
2604 GLboolean InternalSeparateShader
;
2607 * Indicates whether program can be bound for individual pipeline stages
2608 * using UseProgramStages after it is next linked.
2610 GLboolean SeparateShader
;
2612 GLuint NumShaders
; /**< number of attached shaders */
2613 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2616 * User-defined attribute bindings
2618 * These are set via \c glBindAttribLocation and are used to direct the
2619 * GLSL linker. These are \b not the values used in the compiled shader,
2620 * and they are \b not the values returned by \c glGetAttribLocation.
2622 struct string_to_uint_map
*AttributeBindings
;
2625 * User-defined fragment data bindings
2627 * These are set via \c glBindFragDataLocation and are used to direct the
2628 * GLSL linker. These are \b not the values used in the compiled shader,
2629 * and they are \b not the values returned by \c glGetFragDataLocation.
2631 struct string_to_uint_map
*FragDataBindings
;
2632 struct string_to_uint_map
*FragDataIndexBindings
;
2635 * Transform feedback varyings last specified by
2636 * glTransformFeedbackVaryings().
2638 * For the current set of transform feeedback varyings used for transform
2639 * feedback output, see LinkedTransformFeedback.
2644 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2645 } TransformFeedback
;
2647 /** Post-link transform feedback info. */
2648 struct gl_transform_feedback_info LinkedTransformFeedback
;
2650 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2651 enum gl_frag_depth_layout FragDepthLayout
;
2654 * Geometry shader state - copied into gl_geometry_program by
2655 * _mesa_copy_linked_program_data().
2661 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2664 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2665 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2666 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2668 * True if gl_ClipDistance is written to. Copied into
2669 * gl_geometry_program by _mesa_copy_linked_program_data().
2671 GLboolean UsesClipDistance
;
2672 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2673 0 if not present. */
2674 GLboolean UsesEndPrimitive
;
2677 /** Vertex shader state */
2680 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2681 * by _mesa_copy_linked_program_data().
2683 GLboolean UsesClipDistance
;
2684 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2685 0 if not present. */
2689 * Compute shader state - copied into gl_compute_program by
2690 * _mesa_copy_linked_program_data().
2694 * If this shader contains a compute stage, size specified using
2695 * local_size_{x,y,z}. Otherwise undefined.
2697 unsigned LocalSize
[3];
2700 /* post-link info: */
2701 unsigned NumUserUniformStorage
;
2702 struct gl_uniform_storage
*UniformStorage
;
2705 * Size of the gl_ClipDistance array that is output from the last pipeline
2706 * stage before the fragment shader.
2708 unsigned LastClipDistanceArraySize
;
2710 struct gl_uniform_block
*UniformBlocks
;
2711 unsigned NumUniformBlocks
;
2714 * Scale factor for the uniform base location
2716 * This is used to generate locations (returned by \c glGetUniformLocation)
2717 * of uniforms. The base location of the uniform is multiplied by this
2718 * value, and the array index is added.
2724 * _mesa_uniform_merge_location_offset, _mesa_uniform_split_location_offset
2726 unsigned UniformLocationBaseScale
;
2729 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2730 * they're used in, or -1.
2732 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2733 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2735 int *UniformBlockStageIndex
[MESA_SHADER_STAGES
];
2738 * Map of active uniform names to locations
2740 * Maps any active uniform that is not an array element to a location.
2741 * Each active uniform, including individual structure members will appear
2742 * in this map. This roughly corresponds to the set of names that would be
2743 * enumerated by \c glGetActiveUniform.
2745 struct string_to_uint_map
*UniformHash
;
2747 struct gl_active_atomic_buffer
*AtomicBuffers
;
2748 unsigned NumAtomicBuffers
;
2750 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2751 GLboolean Validated
;
2752 GLboolean _Used
; /**< Ever used for drawing? */
2755 unsigned Version
; /**< GLSL version used for linking */
2756 GLboolean IsES
; /**< True if this program uses GLSL ES */
2759 * Per-stage shaders resulting from the first stage of linking.
2761 * Set of linked shaders for this program. The array is accessed using the
2762 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2765 struct gl_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2769 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2770 #define GLSL_LOG 0x2 /**< Write shaders to files */
2771 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2772 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2773 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2774 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2775 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2776 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2777 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2778 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2782 * Context state for GLSL vertex/fragment shaders.
2783 * Extended to support pipeline object
2785 struct gl_pipeline_object
2787 /** Name of the pipeline object as received from glGenProgramPipelines.
2788 * It would be 0 for shaders without separate shader objects.
2797 * Programs used for rendering
2799 * There is a separate program set for each shader stage. If
2800 * GL_EXT_separate_shader_objects is not supported, each of these must point
2801 * to \c NULL or to the same program.
2803 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2805 struct gl_shader_program
*_CurrentFragmentProgram
;
2808 * Program used by glUniform calls.
2810 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2812 struct gl_shader_program
*ActiveProgram
;
2814 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2816 GLboolean EverBound
; /**< Has the pipeline object been created */
2820 * Context state for GLSL pipeline shaders.
2822 struct gl_pipeline_shader_state
2824 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2825 struct gl_pipeline_object
*Current
;
2827 /** Pipeline objects */
2828 struct _mesa_HashTable
*Objects
;
2832 * Compiler options for a single GLSL shaders type
2834 struct gl_shader_compiler_options
2836 /** Driver-selectable options: */
2837 GLboolean EmitCondCodes
; /**< Use condition codes? */
2838 GLboolean EmitNoLoops
;
2839 GLboolean EmitNoFunctions
;
2840 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2841 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2842 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2843 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2844 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2847 * \name Forms of indirect addressing the driver cannot do.
2850 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2851 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2852 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2853 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2856 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2857 GLuint MaxUnrollIterations
;
2860 * Optimize code for array of structures backends.
2862 * This is a proxy for:
2863 * - preferring DP4 instructions (rather than MUL/MAD) for
2864 * matrix * vector operations, such as position transformation.
2866 GLboolean OptimizeForAOS
;
2868 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2873 * Occlusion/timer query object.
2875 struct gl_query_object
2877 GLenum Target
; /**< The query target, when active */
2878 GLuint Id
; /**< hash table ID/name */
2879 GLchar
*Label
; /**< GL_KHR_debug */
2880 GLuint64EXT Result
; /**< the counter */
2881 GLboolean Active
; /**< inside Begin/EndQuery */
2882 GLboolean Ready
; /**< result is ready? */
2883 GLboolean EverBound
;/**< has query object ever been bound */
2888 * Context state for query objects.
2890 struct gl_query_state
2892 struct _mesa_HashTable
*QueryObjects
;
2893 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2894 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2896 /** GL_NV_conditional_render */
2897 struct gl_query_object
*CondRenderQuery
;
2899 /** GL_EXT_transform_feedback */
2900 struct gl_query_object
*PrimitivesGenerated
;
2901 struct gl_query_object
*PrimitivesWritten
;
2903 /** GL_ARB_timer_query */
2904 struct gl_query_object
*TimeElapsed
;
2906 GLenum CondRenderMode
;
2910 /** Sync object state */
2911 struct gl_sync_object
2913 GLenum Type
; /**< GL_SYNC_FENCE */
2914 GLuint Name
; /**< Fence name */
2915 GLchar
*Label
; /**< GL_KHR_debug */
2916 GLint RefCount
; /**< Reference count */
2917 GLboolean DeletePending
; /**< Object was deleted while there were still
2918 * live references (e.g., sync not yet finished)
2920 GLenum SyncCondition
;
2921 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2922 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2927 * State which can be shared by multiple contexts:
2929 struct gl_shared_state
2931 mtx_t Mutex
; /**< for thread safety */
2932 GLint RefCount
; /**< Reference count */
2933 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2934 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2936 /** Default texture objects (shared by all texture units) */
2937 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2939 /** Fallback texture used when a bound texture is incomplete */
2940 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2943 * \name Thread safety and statechange notification for texture
2946 * \todo Improve the granularity of locking.
2949 mtx_t TexMutex
; /**< texobj thread safety */
2950 GLuint TextureStateStamp
; /**< state notification for shared tex */
2953 /** Default buffer object for vertex arrays that aren't in VBOs */
2954 struct gl_buffer_object
*NullBufferObj
;
2957 * \name Vertex/geometry/fragment programs
2960 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2961 struct gl_vertex_program
*DefaultVertexProgram
;
2962 struct gl_fragment_program
*DefaultFragmentProgram
;
2963 struct gl_geometry_program
*DefaultGeometryProgram
;
2966 /* GL_ATI_fragment_shader */
2967 struct _mesa_HashTable
*ATIShaders
;
2968 struct ati_fragment_shader
*DefaultFragmentShader
;
2970 struct _mesa_HashTable
*BufferObjects
;
2972 /** Table of both gl_shader and gl_shader_program objects */
2973 struct _mesa_HashTable
*ShaderObjects
;
2975 /* GL_EXT_framebuffer_object */
2976 struct _mesa_HashTable
*RenderBuffers
;
2977 struct _mesa_HashTable
*FrameBuffers
;
2980 struct set
*SyncObjects
;
2982 /** GL_ARB_sampler_objects */
2983 struct _mesa_HashTable
*SamplerObjects
;
2986 * Some context in this share group was affected by a GPU reset
2988 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
2989 * been affected by a GPU reset must also return
2990 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
2992 * Once this field becomes true, it is never reset to false.
2994 bool ShareGroupReset
;
3000 * Renderbuffers represent drawing surfaces such as color, depth and/or
3001 * stencil. A framebuffer object has a set of renderbuffers.
3002 * Drivers will typically derive subclasses of this type.
3004 struct gl_renderbuffer
3006 mtx_t Mutex
; /**< for thread safety */
3007 GLuint ClassID
; /**< Useful for drivers */
3009 GLchar
*Label
; /**< GL_KHR_debug */
3011 GLuint Width
, Height
;
3013 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3014 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3016 * True for renderbuffers that wrap textures, giving the driver a chance to
3017 * flush render caches through the FinishRenderTexture hook.
3019 * Drivers may also set this on renderbuffers other than those generated by
3020 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3021 * called without a rb->TexImage.
3023 GLboolean NeedsFinishRenderTexture
;
3025 GLenum InternalFormat
; /**< The user-specified format */
3026 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3027 GL_STENCIL_INDEX. */
3028 mesa_format Format
; /**< The actual renderbuffer memory format */
3030 * Pointer to the texture image if this renderbuffer wraps a texture,
3033 * Note that the reference on the gl_texture_object containing this
3034 * TexImage is held by the gl_renderbuffer_attachment.
3036 struct gl_texture_image
*TexImage
;
3038 /** Delete this renderbuffer */
3039 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3041 /** Allocate new storage for this renderbuffer */
3042 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3043 struct gl_renderbuffer
*rb
,
3044 GLenum internalFormat
,
3045 GLuint width
, GLuint height
);
3050 * A renderbuffer attachment points to either a texture object (and specifies
3051 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3053 struct gl_renderbuffer_attachment
3055 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3059 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3060 * application supplied renderbuffer object.
3062 struct gl_renderbuffer
*Renderbuffer
;
3065 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3066 * supplied texture object.
3068 struct gl_texture_object
*Texture
;
3069 GLuint TextureLevel
; /**< Attached mipmap level. */
3070 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3071 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3072 * and 2D array textures */
3078 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3079 * In C++ terms, think of this as a base class from which device drivers
3080 * will make derived classes.
3082 struct gl_framebuffer
3084 mtx_t Mutex
; /**< for thread safety */
3086 * If zero, this is a window system framebuffer. If non-zero, this
3087 * is a FBO framebuffer; note that for some devices (i.e. those with
3088 * a natural pixel coordinate system for FBOs that differs from the
3089 * OpenGL/Mesa coordinate system), this means that the viewport,
3090 * polygon face orientation, and polygon stipple will have to be inverted.
3093 GLchar
*Label
; /**< GL_KHR_debug */
3096 GLboolean DeletePending
;
3099 * The framebuffer's visual. Immutable if this is a window system buffer.
3100 * Computed from attachments if user-made FBO.
3102 struct gl_config Visual
;
3104 GLuint Width
, Height
; /**< size of frame buffer in pixels */
3106 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
3108 GLint _Xmin
, _Xmax
; /**< inclusive */
3109 GLint _Ymin
, _Ymax
; /**< exclusive */
3112 /** \name Derived Z buffer stuff */
3114 GLuint _DepthMax
; /**< Max depth buffer value */
3115 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3116 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3119 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3122 /** Integer color values */
3123 GLboolean _IntegerColor
;
3125 /* ARB_color_buffer_float */
3126 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3127 GLboolean _HasSNormOrFloatColorBuffer
;
3129 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3130 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3132 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3133 * attribute group and GL_PIXEL attribute group, respectively.
3135 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3136 GLenum ColorReadBuffer
;
3138 /** Computed from ColorDraw/ReadBuffer above */
3139 GLuint _NumColorDrawBuffers
;
3140 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3141 GLint _ColorReadBufferIndex
; /* -1 = None */
3142 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3143 struct gl_renderbuffer
*_ColorReadBuffer
;
3146 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3147 * is not layered. For cube maps and cube map arrays, each cube face
3148 * counts as a layer.
3150 GLuint MaxNumLayers
;
3152 /** Delete this framebuffer */
3153 void (*Delete
)(struct gl_framebuffer
*fb
);
3158 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3162 GLushort RangeMin
; /**< min value exponent */
3163 GLushort RangeMax
; /**< max value exponent */
3164 GLushort Precision
; /**< number of mantissa bits */
3169 * Limits for vertex, geometry and fragment programs/shaders.
3171 struct gl_program_constants
3173 /* logical limits */
3174 GLuint MaxInstructions
;
3175 GLuint MaxAluInstructions
;
3176 GLuint MaxTexInstructions
;
3177 GLuint MaxTexIndirections
;
3180 GLuint MaxAddressRegs
;
3181 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3182 GLuint MaxParameters
;
3183 GLuint MaxLocalParams
;
3184 GLuint MaxEnvParams
;
3185 /* native/hardware limits */
3186 GLuint MaxNativeInstructions
;
3187 GLuint MaxNativeAluInstructions
;
3188 GLuint MaxNativeTexInstructions
;
3189 GLuint MaxNativeTexIndirections
;
3190 GLuint MaxNativeAttribs
;
3191 GLuint MaxNativeTemps
;
3192 GLuint MaxNativeAddressRegs
;
3193 GLuint MaxNativeParameters
;
3195 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3198 * \name Per-stage input / output limits
3200 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3201 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3202 * ES). This is stored as \c gl_constants::MaxVarying.
3204 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3205 * variables. Each stage as a certain number of outputs that it can feed
3206 * to the next stage and a certain number inputs that it can consume from
3207 * the previous stage.
3209 * Vertex shader inputs do not participate this in this accounting.
3210 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3212 * Fragment shader outputs do not participate this in this accounting.
3213 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3216 GLuint MaxInputComponents
;
3217 GLuint MaxOutputComponents
;
3220 /* ES 2.0 and GL_ARB_ES2_compatibility */
3221 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3222 struct gl_precision LowInt
, MediumInt
, HighInt
;
3223 /* GL_ARB_uniform_buffer_object */
3224 GLuint MaxUniformBlocks
;
3225 GLuint MaxCombinedUniformComponents
;
3226 GLuint MaxTextureImageUnits
;
3228 /* GL_ARB_shader_atomic_counters */
3229 GLuint MaxAtomicBuffers
;
3230 GLuint MaxAtomicCounters
;
3232 /* GL_ARB_shader_image_load_store */
3233 GLuint MaxImageUniforms
;
3238 * Constants which may be overridden by device driver during context creation
3239 * but are never changed after that.
3243 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3244 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3245 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3246 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3247 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3248 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3249 GLuint MaxTextureCoordUnits
;
3250 GLuint MaxCombinedTextureImageUnits
;
3251 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3252 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3253 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3254 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3256 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3258 GLuint MaxArrayLockSize
;
3262 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3263 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3264 GLfloat PointSizeGranularity
;
3265 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3266 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3267 GLfloat LineWidthGranularity
;
3269 GLuint MaxClipPlanes
;
3271 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3272 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3274 GLuint MaxViewportWidth
, MaxViewportHeight
;
3275 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3276 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3280 } ViewportBounds
; /**< GL_ARB_viewport_array */
3282 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3283 GLuint MaxProgramMatrices
;
3284 GLuint MaxProgramMatrixStackDepth
;
3287 GLuint SamplesPassed
;
3290 GLuint PrimitivesGenerated
;
3291 GLuint PrimitivesWritten
;
3294 /** vertex array / buffer object bounds checking */
3295 GLboolean CheckArrayBounds
;
3297 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3299 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3300 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3301 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3303 /** Number of varying vectors between any two shader stages. */
3307 * GL_ARB_uniform_buffer_object
3309 GLuint MaxCombinedUniformBlocks
;
3310 GLuint MaxUniformBufferBindings
;
3311 GLuint MaxUniformBlockSize
;
3312 GLuint UniformBufferOffsetAlignment
;
3315 /** GL_ARB_geometry_shader4 */
3316 GLuint MaxGeometryOutputVertices
;
3317 GLuint MaxGeometryTotalOutputComponents
;
3319 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
3322 * Changes default GLSL extension behavior from "error" to "warn". It's out
3323 * of spec, but it can make some apps work that otherwise wouldn't.
3325 GLboolean ForceGLSLExtensionsWarn
;
3328 * If non-zero, forces GLSL shaders without the #version directive to behave
3329 * as if they began with "#version ForceGLSLVersion".
3331 GLuint ForceGLSLVersion
;
3334 * Does the driver support real 32-bit integers? (Otherwise, integers are
3335 * simulated via floats.)
3337 GLboolean NativeIntegers
;
3340 * If the driver supports real 32-bit integers, what integer value should be
3341 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3343 GLuint UniformBooleanTrue
;
3345 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
3346 GLbitfield SupportedBumpUnits
;
3349 * Maximum amount of time, measured in nanseconds, that the server can wait.
3351 GLuint64 MaxServerWaitTimeout
;
3353 /** GL_EXT_provoking_vertex */
3354 GLboolean QuadsFollowProvokingVertexConvention
;
3356 /** OpenGL version 3.0 */
3357 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3359 /** OpenGL version 3.2 */
3360 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3362 /** GL_EXT_transform_feedback */
3363 GLuint MaxTransformFeedbackBuffers
;
3364 GLuint MaxTransformFeedbackSeparateComponents
;
3365 GLuint MaxTransformFeedbackInterleavedComponents
;
3366 GLuint MaxVertexStreams
;
3368 /** GL_EXT_gpu_shader4 */
3369 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3371 /** GL_ARB_texture_gather */
3372 GLuint MinProgramTextureGatherOffset
;
3373 GLuint MaxProgramTextureGatherOffset
;
3374 GLuint MaxProgramTextureGatherComponents
;
3376 /* GL_ARB_robustness */
3377 GLenum ResetStrategy
;
3379 /* GL_ARB_blend_func_extended */
3380 GLuint MaxDualSourceDrawBuffers
;
3383 * Whether the implementation strips out and ignores texture borders.
3385 * Many GPU hardware implementations don't support rendering with texture
3386 * borders and mipmapped textures. (Note: not static border color, but the
3387 * old 1-pixel border around each edge). Implementations then have to do
3388 * slow fallbacks to be correct, or just ignore the border and be fast but
3389 * wrong. Setting the flag strips the border off of TexImage calls,
3390 * providing "fast but wrong" at significantly reduced driver complexity.
3392 * Texture borders are deprecated in GL 3.0.
3394 GLboolean StripTextureBorder
;
3397 * For drivers which can do a better job at eliminating unused uniforms
3398 * than the GLSL compiler.
3400 * XXX Remove these as soon as a better solution is available.
3402 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3405 * Force software support for primitive restart in the VBO module.
3407 GLboolean PrimitiveRestartInSoftware
;
3410 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3411 * than passing the transform feedback object to the drawing function.
3413 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3415 /** GL_ARB_map_buffer_alignment */
3416 GLuint MinMapBufferAlignment
;
3419 * Disable varying packing. This is out of spec, but potentially useful
3420 * for older platforms that supports a limited number of texture
3421 * indirections--on these platforms, unpacking the varyings in the fragment
3422 * shader increases the number of texture indirections by 1, which might
3423 * make some shaders not executable at all.
3425 * Drivers that support transform feedback must set this value to GL_FALSE.
3427 GLboolean DisableVaryingPacking
;
3430 * Maximum value supported for an index in DrawElements and friends.
3432 * This must be at least (1ull<<24)-1. The default value is
3435 * \since ES 3.0 or GL_ARB_ES3_compatibility
3436 * \sa _mesa_init_constants
3438 GLuint64 MaxElementIndex
;
3441 * Disable interpretation of line continuations (lines ending with a
3442 * backslash character ('\') in GLSL source.
3444 GLboolean DisableGLSLLineContinuations
;
3446 /** GL_ARB_texture_multisample */
3447 GLint MaxColorTextureSamples
;
3448 GLint MaxDepthTextureSamples
;
3449 GLint MaxIntegerSamples
;
3451 /** GL_ARB_shader_atomic_counters */
3452 GLuint MaxAtomicBufferBindings
;
3453 GLuint MaxAtomicBufferSize
;
3454 GLuint MaxCombinedAtomicBuffers
;
3455 GLuint MaxCombinedAtomicCounters
;
3457 /** GL_ARB_vertex_attrib_binding */
3458 GLint MaxVertexAttribRelativeOffset
;
3459 GLint MaxVertexAttribBindings
;
3461 /* GL_ARB_shader_image_load_store */
3462 GLuint MaxImageUnits
;
3463 GLuint MaxCombinedImageUnitsAndFragmentOutputs
;
3464 GLuint MaxImageSamples
;
3465 GLuint MaxCombinedImageUniforms
;
3467 /** GL_ARB_compute_shader */
3468 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3469 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3470 GLuint MaxComputeWorkGroupInvocations
;
3472 /** GL_ARB_gpu_shader5 */
3473 GLfloat MinFragmentInterpolationOffset
;
3474 GLfloat MaxFragmentInterpolationOffset
;
3479 * Enable flag for each OpenGL extension. Different device drivers will
3480 * enable different extensions at runtime.
3482 struct gl_extensions
3484 GLboolean dummy
; /* don't remove this! */
3485 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3486 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3487 GLboolean ANGLE_texture_compression_dxt
;
3488 GLboolean ARB_ES2_compatibility
;
3489 GLboolean ARB_ES3_compatibility
;
3490 GLboolean ARB_arrays_of_arrays
;
3491 GLboolean ARB_base_instance
;
3492 GLboolean ARB_blend_func_extended
;
3493 GLboolean ARB_buffer_storage
;
3494 GLboolean ARB_color_buffer_float
;
3495 GLboolean ARB_compute_shader
;
3496 GLboolean ARB_conservative_depth
;
3497 GLboolean ARB_depth_buffer_float
;
3498 GLboolean ARB_depth_clamp
;
3499 GLboolean ARB_depth_texture
;
3500 GLboolean ARB_draw_buffers_blend
;
3501 GLboolean ARB_draw_elements_base_vertex
;
3502 GLboolean ARB_draw_indirect
;
3503 GLboolean ARB_draw_instanced
;
3504 GLboolean ARB_fragment_coord_conventions
;
3505 GLboolean ARB_fragment_program
;
3506 GLboolean ARB_fragment_program_shadow
;
3507 GLboolean ARB_fragment_shader
;
3508 GLboolean ARB_framebuffer_object
;
3509 GLboolean ARB_explicit_attrib_location
;
3510 GLboolean ARB_geometry_shader4
;
3511 GLboolean ARB_gpu_shader5
;
3512 GLboolean ARB_half_float_vertex
;
3513 GLboolean ARB_instanced_arrays
;
3514 GLboolean ARB_internalformat_query
;
3515 GLboolean ARB_map_buffer_range
;
3516 GLboolean ARB_occlusion_query
;
3517 GLboolean ARB_occlusion_query2
;
3518 GLboolean ARB_point_sprite
;
3519 GLboolean ARB_sample_shading
;
3520 GLboolean ARB_seamless_cube_map
;
3521 GLboolean ARB_separate_shader_objects
;
3522 GLboolean ARB_shader_atomic_counters
;
3523 GLboolean ARB_shader_bit_encoding
;
3524 GLboolean ARB_shader_image_load_store
;
3525 GLboolean ARB_shader_stencil_export
;
3526 GLboolean ARB_shader_texture_lod
;
3527 GLboolean ARB_shading_language_packing
;
3528 GLboolean ARB_shading_language_420pack
;
3529 GLboolean ARB_shadow
;
3530 GLboolean ARB_stencil_texturing
;
3532 GLboolean ARB_texture_border_clamp
;
3533 GLboolean ARB_texture_buffer_object
;
3534 GLboolean ARB_texture_buffer_object_rgb32
;
3535 GLboolean ARB_texture_buffer_range
;
3536 GLboolean ARB_texture_compression_rgtc
;
3537 GLboolean ARB_texture_cube_map
;
3538 GLboolean ARB_texture_cube_map_array
;
3539 GLboolean ARB_texture_env_combine
;
3540 GLboolean ARB_texture_env_crossbar
;
3541 GLboolean ARB_texture_env_dot3
;
3542 GLboolean ARB_texture_float
;
3543 GLboolean ARB_texture_gather
;
3544 GLboolean ARB_texture_mirror_clamp_to_edge
;
3545 GLboolean ARB_texture_multisample
;
3546 GLboolean ARB_texture_non_power_of_two
;
3547 GLboolean ARB_texture_query_levels
;
3548 GLboolean ARB_texture_query_lod
;
3549 GLboolean ARB_texture_rg
;
3550 GLboolean ARB_texture_rgb10_a2ui
;
3551 GLboolean ARB_texture_view
;
3552 GLboolean ARB_timer_query
;
3553 GLboolean ARB_transform_feedback2
;
3554 GLboolean ARB_transform_feedback3
;
3555 GLboolean ARB_transform_feedback_instanced
;
3556 GLboolean ARB_uniform_buffer_object
;
3557 GLboolean ARB_vertex_program
;
3558 GLboolean ARB_vertex_shader
;
3559 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3560 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3561 GLboolean ARB_viewport_array
;
3562 GLboolean EXT_blend_color
;
3563 GLboolean EXT_blend_equation_separate
;
3564 GLboolean EXT_blend_func_separate
;
3565 GLboolean EXT_blend_minmax
;
3566 GLboolean EXT_depth_bounds_test
;
3567 GLboolean EXT_draw_buffers2
;
3568 GLboolean EXT_framebuffer_multisample
;
3569 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3570 GLboolean EXT_framebuffer_sRGB
;
3571 GLboolean EXT_gpu_program_parameters
;
3572 GLboolean EXT_gpu_shader4
;
3573 GLboolean EXT_packed_float
;
3574 GLboolean EXT_pixel_buffer_object
;
3575 GLboolean EXT_point_parameters
;
3576 GLboolean EXT_provoking_vertex
;
3577 GLboolean EXT_separate_shader_objects
;
3578 GLboolean EXT_shader_integer_mix
;
3579 GLboolean EXT_stencil_two_side
;
3580 GLboolean EXT_texture3D
;
3581 GLboolean EXT_texture_array
;
3582 GLboolean EXT_texture_compression_latc
;
3583 GLboolean EXT_texture_compression_s3tc
;
3584 GLboolean EXT_texture_env_dot3
;
3585 GLboolean EXT_texture_filter_anisotropic
;
3586 GLboolean EXT_texture_integer
;
3587 GLboolean EXT_texture_mirror_clamp
;
3588 GLboolean EXT_texture_shared_exponent
;
3589 GLboolean EXT_texture_snorm
;
3590 GLboolean EXT_texture_sRGB
;
3591 GLboolean EXT_texture_sRGB_decode
;
3592 GLboolean EXT_texture_swizzle
;
3593 GLboolean EXT_transform_feedback
;
3594 GLboolean EXT_timer_query
;
3595 GLboolean EXT_vertex_array_bgra
;
3596 GLboolean OES_standard_derivatives
;
3597 /* vendor extensions */
3598 GLboolean AMD_performance_monitor
;
3599 GLboolean AMD_seamless_cubemap_per_texture
;
3600 GLboolean AMD_vertex_shader_layer
;
3601 GLboolean APPLE_object_purgeable
;
3602 GLboolean ATI_envmap_bumpmap
;
3603 GLboolean ATI_texture_compression_3dc
;
3604 GLboolean ATI_texture_mirror_once
;
3605 GLboolean ATI_texture_env_combine3
;
3606 GLboolean ATI_fragment_shader
;
3607 GLboolean ATI_separate_stencil
;
3608 GLboolean MESA_pack_invert
;
3609 GLboolean MESA_ycbcr_texture
;
3610 GLboolean NV_conditional_render
;
3611 GLboolean NV_fog_distance
;
3612 GLboolean NV_fragment_program_option
;
3613 GLboolean NV_point_sprite
;
3614 GLboolean NV_primitive_restart
;
3615 GLboolean NV_texture_barrier
;
3616 GLboolean NV_texture_env_combine4
;
3617 GLboolean NV_texture_rectangle
;
3618 GLboolean NV_vdpau_interop
;
3619 GLboolean TDFX_texture_compression_FXT1
;
3620 GLboolean OES_EGL_image
;
3621 GLboolean OES_draw_texture
;
3622 GLboolean OES_depth_texture_cube_map
;
3623 GLboolean OES_EGL_image_external
;
3624 GLboolean OES_compressed_ETC1_RGB8_texture
;
3625 GLboolean extension_sentinel
;
3626 /** The extension string */
3627 const GLubyte
*String
;
3628 /** Number of supported extensions */
3634 * A stack of matrices (projection, modelview, color, texture, etc).
3636 struct gl_matrix_stack
3638 GLmatrix
*Top
; /**< points into Stack */
3639 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3640 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3641 GLuint MaxDepth
; /**< size of Stack[] array */
3642 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3647 * \name Bits for image transfer operations
3648 * \sa __struct gl_contextRec::ImageTransferState.
3651 #define IMAGE_SCALE_BIAS_BIT 0x1
3652 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3653 #define IMAGE_MAP_COLOR_BIT 0x4
3654 #define IMAGE_CLAMP_BIT 0x800
3657 /** Pixel Transfer ops */
3658 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3659 IMAGE_SHIFT_OFFSET_BIT | \
3660 IMAGE_MAP_COLOR_BIT)
3663 * \name Bits to indicate what state has changed.
3666 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3667 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3668 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3669 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3670 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3671 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3672 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3673 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3674 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3675 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3676 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3677 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3678 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3679 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3680 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3681 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3682 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3683 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3684 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3685 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3686 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3687 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3688 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3689 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3690 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3691 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3692 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3693 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3694 #define _NEW_BUFFER_OBJECT (1 << 28)
3695 #define _NEW_FRAG_CLAMP (1 << 29)
3696 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3697 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3703 * Composite state flags
3706 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3712 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3722 /* This has to be included here. */
3727 * Display list flags.
3728 * Strictly this is a tnl-private concept, but it doesn't seem
3729 * worthwhile adding a tnl private structure just to hold this one bit
3732 #define DLIST_DANGLING_REFS 0x1
3735 /** Opaque declaration of display list payload data type */
3736 union gl_dlist_node
;
3740 * Provide a location where information about a display list can be
3741 * collected. Could be extended with driverPrivate structures,
3742 * etc. in the future.
3744 struct gl_display_list
3747 GLchar
*Label
; /**< GL_KHR_debug */
3748 GLbitfield Flags
; /**< DLIST_x flags */
3749 /** The dlist commands are in a linked list of nodes */
3750 union gl_dlist_node
*Head
;
3755 * State used during display list compilation and execution.
3757 struct gl_dlist_state
3759 GLuint CallDepth
; /**< Current recursion calling depth */
3761 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3762 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3763 GLuint CurrentPos
; /**< Index into current block of nodes */
3765 GLvertexformat ListVtxfmt
;
3767 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3768 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3770 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3771 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3774 /* State known to have been set by the currently-compiling display
3775 * list. Used to eliminate some redundant state changes.
3783 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3784 * to small enums suitable for use as an array index.
3787 enum mesa_debug_source
{
3788 MESA_DEBUG_SOURCE_API
,
3789 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3790 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3791 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3792 MESA_DEBUG_SOURCE_APPLICATION
,
3793 MESA_DEBUG_SOURCE_OTHER
,
3794 MESA_DEBUG_SOURCE_COUNT
3797 enum mesa_debug_type
{
3798 MESA_DEBUG_TYPE_ERROR
,
3799 MESA_DEBUG_TYPE_DEPRECATED
,
3800 MESA_DEBUG_TYPE_UNDEFINED
,
3801 MESA_DEBUG_TYPE_PORTABILITY
,
3802 MESA_DEBUG_TYPE_PERFORMANCE
,
3803 MESA_DEBUG_TYPE_OTHER
,
3804 MESA_DEBUG_TYPE_MARKER
,
3805 MESA_DEBUG_TYPE_PUSH_GROUP
,
3806 MESA_DEBUG_TYPE_POP_GROUP
,
3807 MESA_DEBUG_TYPE_COUNT
3810 enum mesa_debug_severity
{
3811 MESA_DEBUG_SEVERITY_LOW
,
3812 MESA_DEBUG_SEVERITY_MEDIUM
,
3813 MESA_DEBUG_SEVERITY_HIGH
,
3814 MESA_DEBUG_SEVERITY_NOTIFICATION
,
3815 MESA_DEBUG_SEVERITY_COUNT
3821 * An error, warning, or other piece of debug information for an application
3822 * to consume via GL_ARB_debug_output/GL_KHR_debug.
3826 enum mesa_debug_source source
;
3827 enum mesa_debug_type type
;
3829 enum mesa_debug_severity severity
;
3834 struct gl_debug_namespace
3836 struct _mesa_HashTable
*IDs
;
3837 unsigned ZeroID
; /* a HashTable won't take zero, so store its state here */
3838 /** lists of IDs in the hash table at each severity */
3839 struct simple_node Severity
[MESA_DEBUG_SEVERITY_COUNT
];
3842 struct gl_debug_state
3844 GLDEBUGPROC Callback
;
3845 const void *CallbackData
;
3846 GLboolean SyncOutput
;
3847 GLboolean DebugOutput
;
3848 GLboolean Defaults
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SEVERITY_COUNT
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3849 struct gl_debug_namespace Namespaces
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3850 struct gl_debug_msg Log
[MAX_DEBUG_LOGGED_MESSAGES
];
3851 struct gl_debug_msg DebugGroupMsgs
[MAX_DEBUG_GROUP_STACK_DEPTH
];
3852 GLint GroupStackDepth
;
3855 GLint NextMsgLength
; /* redundant, but copied here from Log[NextMsg].length
3856 for the sake of the offsetof() code in get.c */
3860 * Enum for the OpenGL APIs we know about and may support.
3862 * NOTE: This must match the api_enum table in
3863 * src/mesa/main/get_hash_generator.py
3867 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
3871 API_OPENGL_LAST
= API_OPENGL_CORE
3875 * Driver-specific state flags.
3877 * These are or'd with gl_context::NewDriverState to notify a driver about
3878 * a state change. The driver sets the flags at context creation and
3879 * the meaning of the bits set is opaque to core Mesa.
3881 struct gl_driver_flags
3883 /** gl_context::Array::_DrawArrays (vertex array state) */
3884 GLbitfield NewArray
;
3886 /** gl_context::TransformFeedback::CurrentObject */
3887 GLbitfield NewTransformFeedback
;
3889 /** gl_context::TransformFeedback::CurrentObject::shader_program */
3890 GLbitfield NewTransformFeedbackProg
;
3892 /** gl_context::RasterDiscard */
3893 GLbitfield NewRasterizerDiscard
;
3896 * gl_context::UniformBufferBindings
3897 * gl_shader_program::UniformBlocks
3899 GLbitfield NewUniformBuffer
;
3902 * gl_context::AtomicBufferBindings
3904 GLbitfield NewAtomicBuffer
;
3907 * gl_context::ImageUnits
3909 GLbitfield NewImageUnits
;
3912 struct gl_uniform_buffer_binding
3914 struct gl_buffer_object
*BufferObject
;
3915 /** Start of uniform block data in the buffer */
3917 /** Size of data allowed to be referenced from the buffer (in bytes) */
3920 * glBindBufferBase() indicates that the Size should be ignored and only
3921 * limited by the current size of the BufferObject.
3923 GLboolean AutomaticSize
;
3927 * ARB_shader_image_load_store image unit.
3929 struct gl_image_unit
3932 * Texture object bound to this unit.
3934 struct gl_texture_object
*TexObj
;
3937 * Level of the texture object bound to this unit.
3942 * \c GL_TRUE if the whole level is bound as an array of layers, \c
3943 * GL_FALSE if only some specific layer of the texture is bound.
3949 * Layer of the texture object bound to this unit, or zero if the
3950 * whole level is bound.
3955 * Access allowed to this texture image. Either \c GL_READ_ONLY,
3956 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
3961 * GL internal format that determines the interpretation of the
3962 * image memory when shader image operations are performed through
3968 * Mesa format corresponding to \c Format.
3970 mesa_format _ActualFormat
;
3973 * GL_TRUE if the state of this image unit is valid and access from
3974 * the shader is allowed. Otherwise loads from this unit should
3975 * return zero and stores should have no effect.
3981 * Binding point for an atomic counter buffer object.
3983 struct gl_atomic_buffer_binding
3985 struct gl_buffer_object
*BufferObject
;
3991 * Mesa rendering context.
3993 * This is the central context data structure for Mesa. Almost all
3994 * OpenGL state is contained in this structure.
3995 * Think of this as a base class from which device drivers will derive
4000 /** State possibly shared with other contexts in the address space */
4001 struct gl_shared_state
*Shared
;
4003 /** \name API function pointer tables */
4007 * The current dispatch table for non-displaylist-saving execution, either
4008 * BeginEnd or OutsideBeginEnd
4010 struct _glapi_table
*Exec
;
4012 * The normal dispatch table for non-displaylist-saving, non-begin/end
4014 struct _glapi_table
*OutsideBeginEnd
;
4015 /** The dispatch table used between glNewList() and glEndList() */
4016 struct _glapi_table
*Save
;
4018 * The dispatch table used between glBegin() and glEnd() (outside of a
4019 * display list). Only valid functions between those two are set, which is
4020 * mostly just the set in a GLvertexformat struct.
4022 struct _glapi_table
*BeginEnd
;
4024 * Tracks the current dispatch table out of the 3 above, so that it can be
4025 * re-set on glXMakeCurrent().
4027 struct _glapi_table
*CurrentDispatch
;
4030 struct gl_config Visual
;
4031 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4032 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4033 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4034 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4037 * Device driver function pointer table
4039 struct dd_function_table Driver
;
4041 /** Core/Driver constants */
4042 struct gl_constants Const
;
4044 /** \name The various 4x4 matrix stacks */
4046 struct gl_matrix_stack ModelviewMatrixStack
;
4047 struct gl_matrix_stack ProjectionMatrixStack
;
4048 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4049 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4050 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4053 /** Combined modelview and projection matrix */
4054 GLmatrix _ModelProjectMatrix
;
4056 /** \name Display lists */
4057 struct gl_dlist_state ListState
;
4059 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4060 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4062 /** Extension information */
4063 struct gl_extensions Extensions
;
4065 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4067 char *VersionString
;
4069 /** \name State attribute stack (for glPush/PopAttrib) */
4071 GLuint AttribStackDepth
;
4072 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4075 /** \name Renderer attribute groups
4077 * We define a struct for each attribute group to make pushing and popping
4078 * attributes easy. Also it's a good organization.
4081 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4082 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4083 struct gl_current_attrib Current
; /**< Current attributes */
4084 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4085 struct gl_eval_attrib Eval
; /**< Eval attributes */
4086 struct gl_fog_attrib Fog
; /**< Fog attributes */
4087 struct gl_hint_attrib Hint
; /**< Hint attributes */
4088 struct gl_light_attrib Light
; /**< Light attributes */
4089 struct gl_line_attrib Line
; /**< Line attributes */
4090 struct gl_list_attrib List
; /**< List attributes */
4091 struct gl_multisample_attrib Multisample
;
4092 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4093 struct gl_point_attrib Point
; /**< Point attributes */
4094 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4095 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4096 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4097 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4098 struct gl_texture_attrib Texture
; /**< Texture attributes */
4099 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4100 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4103 /** \name Client attribute stack */
4105 GLuint ClientAttribStackDepth
;
4106 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4109 /** \name Client attribute groups */
4111 struct gl_array_attrib Array
; /**< Vertex arrays */
4112 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4113 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4114 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4117 /** \name Other assorted state (not pushed/popped on attribute stack) */
4119 struct gl_pixelmaps PixelMaps
;
4121 struct gl_evaluators EvalMap
; /**< All evaluators */
4122 struct gl_feedback Feedback
; /**< Feedback */
4123 struct gl_selection Select
; /**< Selection */
4125 struct gl_program_state Program
; /**< general program state */
4126 struct gl_vertex_program_state VertexProgram
;
4127 struct gl_fragment_program_state FragmentProgram
;
4128 struct gl_geometry_program_state GeometryProgram
;
4129 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4131 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4132 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4133 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
4135 struct gl_query_state Query
; /**< occlusion, timer queries */
4137 struct gl_transform_feedback_state TransformFeedback
;
4139 struct gl_perf_monitor_state PerfMonitor
;
4141 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4143 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4144 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4147 * Current GL_ARB_uniform_buffer_object binding referenced by
4148 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4150 struct gl_buffer_object
*UniformBuffer
;
4153 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4154 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4155 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4158 struct gl_uniform_buffer_binding
4159 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4162 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4165 struct gl_buffer_object
*AtomicBuffer
;
4168 * Array of atomic counter buffer binding points.
4170 struct gl_atomic_buffer_binding
4171 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4174 * Array of image units for ARB_shader_image_load_store.
4176 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4180 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4182 /* GL_EXT_framebuffer_object */
4183 struct gl_renderbuffer
*CurrentRenderbuffer
;
4185 GLenum ErrorValue
; /**< Last error code */
4188 * Recognize and silence repeated error debug messages in buggy apps.
4190 const char *ErrorDebugFmtString
;
4191 GLuint ErrorDebugCount
;
4193 /* GL_ARB_debug_output/GL_KHR_debug */
4194 struct gl_debug_state
*Debug
;
4196 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4197 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4198 GLbitfield NewDriverState
;/**< bitwise-or of flags from DriverFlags */
4200 struct gl_driver_flags DriverFlags
;
4202 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4204 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4206 /** \name Derived state */
4207 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4208 GLfloat _EyeZDir
[3];
4209 GLfloat _ModelViewInvScale
;
4210 GLboolean _NeedEyeCoords
;
4211 GLboolean _ForceEyeCoords
;
4213 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4215 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4217 /** \name For debugging/development only */
4219 GLboolean FirstTimeCurrent
;
4222 /** software compression/decompression supported or not */
4223 GLboolean Mesa_DXTn
;
4225 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4227 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4230 * \name Hooks for module contexts.
4232 * These will eventually live in the driver or elsewhere.
4235 void *swrast_context
;
4236 void *swsetup_context
;
4237 void *swtnl_context
;
4238 struct vbo_context
*vbo_context
;
4239 struct st_context
*st
;
4244 * \name NV_vdpau_interop
4247 const void *vdpDevice
;
4248 const void *vdpGetProcAddress
;
4249 struct set
*vdpSurfaces
;
4253 * Has this context observed a GPU reset in any context in the share group?
4255 * Once this field becomes true, it is never reset to false.
4257 GLboolean ShareGroupReset
;
4262 extern int MESA_VERBOSE
;
4263 extern int MESA_DEBUG_FLAGS
;
4264 # define MESA_FUNCTION __FUNCTION__
4266 # define MESA_VERBOSE 0
4267 # define MESA_DEBUG_FLAGS 0
4268 # define MESA_FUNCTION "a function"
4275 /** The MESA_VERBOSE var is a bitmask of these flags */
4278 VERBOSE_VARRAY
= 0x0001,
4279 VERBOSE_TEXTURE
= 0x0002,
4280 VERBOSE_MATERIAL
= 0x0004,
4281 VERBOSE_PIPELINE
= 0x0008,
4282 VERBOSE_DRIVER
= 0x0010,
4283 VERBOSE_STATE
= 0x0020,
4284 VERBOSE_API
= 0x0040,
4285 VERBOSE_DISPLAY_LIST
= 0x0100,
4286 VERBOSE_LIGHTING
= 0x0200,
4287 VERBOSE_PRIMS
= 0x0400,
4288 VERBOSE_VERTS
= 0x0800,
4289 VERBOSE_DISASSEM
= 0x1000,
4290 VERBOSE_DRAW
= 0x2000,
4291 VERBOSE_SWAPBUFFERS
= 0x4000
4295 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4298 DEBUG_SILENT
= (1 << 0),
4299 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4300 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4301 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4310 #endif /* MTYPES_H */