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 */
1203 GLfloat Priority
; /**< in [0,1] */
1204 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1205 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1206 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1207 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1208 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1209 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1210 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1211 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1212 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1213 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1214 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1215 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1216 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1217 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1219 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1221 GLuint MinLevel
; /**< GL_ARB_texture_view */
1222 GLuint MinLayer
; /**< GL_ARB_texture_view */
1223 GLuint NumLevels
; /**< GL_ARB_texture_view */
1224 GLuint NumLayers
; /**< GL_ARB_texture_view */
1226 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1227 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1229 /** GL_ARB_texture_buffer_object */
1230 struct gl_buffer_object
*BufferObject
;
1231 GLenum BufferObjectFormat
;
1232 /** Equivalent Mesa format for BufferObjectFormat. */
1233 mesa_format _BufferObjectFormat
;
1234 /** GL_ARB_texture_buffer_range */
1235 GLintptr BufferOffset
;
1236 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1238 /** GL_OES_EGL_image_external */
1239 GLint RequiredTextureImageUnits
;
1241 /** GL_ARB_shader_image_load_store */
1242 GLenum ImageFormatCompatibilityType
;
1246 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1247 #define MAX_COMBINER_TERMS 4
1251 * Texture combine environment state.
1253 struct gl_tex_env_combine_state
1255 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1256 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1257 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1258 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1259 GLenum SourceA
[MAX_COMBINER_TERMS
];
1260 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1261 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1262 GLenum OperandA
[MAX_COMBINER_TERMS
];
1263 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1264 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1265 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1266 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1271 * TexGenEnabled flags.
1278 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1283 * Bit flag versions of the corresponding GL_ constants.
1286 #define TEXGEN_SPHERE_MAP 0x1
1287 #define TEXGEN_OBJ_LINEAR 0x2
1288 #define TEXGEN_EYE_LINEAR 0x4
1289 #define TEXGEN_REFLECTION_MAP_NV 0x8
1290 #define TEXGEN_NORMAL_MAP_NV 0x10
1292 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1293 TEXGEN_REFLECTION_MAP_NV | \
1294 TEXGEN_NORMAL_MAP_NV)
1295 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1296 TEXGEN_REFLECTION_MAP_NV | \
1297 TEXGEN_NORMAL_MAP_NV | \
1303 /** Tex-gen enabled for texture unit? */
1304 #define ENABLE_TEXGEN(unit) (1 << (unit))
1306 /** Non-identity texture matrix for texture unit? */
1307 #define ENABLE_TEXMAT(unit) (1 << (unit))
1311 * Texture coord generation state.
1315 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1316 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1317 GLfloat ObjectPlane
[4];
1318 GLfloat EyePlane
[4];
1323 * Texture unit state. Contains enable flags, texture environment/function/
1324 * combiners, texgen state, and pointers to current texture objects.
1326 struct gl_texture_unit
1328 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1329 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1331 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1332 GLclampf EnvColor
[4];
1333 GLfloat EnvColorUnclamped
[4];
1335 struct gl_texgen GenS
;
1336 struct gl_texgen GenT
;
1337 struct gl_texgen GenR
;
1338 struct gl_texgen GenQ
;
1339 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1340 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1342 GLfloat LodBias
; /**< for biasing mipmap levels */
1344 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1346 /** Current sampler object (GL_ARB_sampler_objects) */
1347 struct gl_sampler_object
*Sampler
;
1350 * \name GL_EXT_texture_env_combine
1352 struct gl_tex_env_combine_state Combine
;
1355 * Derived state based on \c EnvMode and the \c BaseFormat of the
1356 * currently enabled texture.
1358 struct gl_tex_env_combine_state _EnvMode
;
1361 * Currently enabled combiner state. This will point to either
1362 * \c Combine or \c _EnvMode.
1364 struct gl_tex_env_combine_state
*_CurrentCombine
;
1366 /** Current texture object pointers */
1367 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1369 /** Points to highest priority, complete and enabled texture object */
1370 struct gl_texture_object
*_Current
;
1375 * Texture attribute group (GL_TEXTURE_BIT).
1377 struct gl_texture_attrib
1379 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1380 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1382 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1384 /** GL_ARB_texture_buffer_object */
1385 struct gl_buffer_object
*BufferObject
;
1387 /** GL_ARB_seamless_cubemap */
1388 GLboolean CubeMapSeamless
;
1390 /** Texture units/samplers used by vertex or fragment texturing */
1391 GLbitfield _EnabledUnits
;
1393 /** Texture coord units/sets used for fragment texturing */
1394 GLbitfield _EnabledCoordUnits
;
1396 /** Texture coord units that have texgen enabled */
1397 GLbitfield _TexGenEnabled
;
1399 /** Texture coord units that have non-identity matrices */
1400 GLbitfield _TexMatEnabled
;
1402 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1403 GLbitfield _GenFlags
;
1408 * Data structure representing a single clip plane (e.g. one of the elements
1409 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1411 typedef GLfloat gl_clip_plane
[4];
1415 * Transformation attribute group (GL_TRANSFORM_BIT).
1417 struct gl_transform_attrib
1419 GLenum MatrixMode
; /**< Matrix mode */
1420 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1421 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1422 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1423 GLboolean Normalize
; /**< Normalize all normals? */
1424 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1425 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1426 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1431 * Viewport attribute group (GL_VIEWPORT_BIT).
1433 struct gl_viewport_attrib
1435 GLfloat X
, Y
; /**< position */
1436 GLfloat Width
, Height
; /**< size */
1437 GLdouble Near
, Far
; /**< Depth buffer range */
1438 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1447 } gl_map_buffer_index
;
1451 * Fields describing a mapped buffer range.
1453 struct gl_buffer_mapping
{
1454 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1455 GLvoid
*Pointer
; /**< User-space address of mapping */
1456 GLintptr Offset
; /**< Mapped offset */
1457 GLsizeiptr Length
; /**< Mapped length */
1462 * GL_ARB_vertex/pixel_buffer_object buffer object
1464 struct gl_buffer_object
1469 GLchar
*Label
; /**< GL_KHR_debug */
1470 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1471 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1472 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1473 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1474 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1475 GLboolean Written
; /**< Ever written to? (for debugging) */
1476 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1477 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1479 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1484 * Client pixel packing/unpacking attributes
1486 struct gl_pixelstore_attrib
1494 GLboolean SwapBytes
;
1496 GLboolean Invert
; /**< GL_MESA_pack_invert */
1497 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1502 * Client vertex array attributes
1504 struct gl_client_array
1506 GLint Size
; /**< components per element (1,2,3,4) */
1507 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1508 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1509 GLsizei Stride
; /**< user-specified stride */
1510 GLsizei StrideB
; /**< actual stride in bytes */
1511 const GLubyte
*Ptr
; /**< Points to array data */
1512 GLboolean Enabled
; /**< Enabled flag is a boolean */
1513 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1514 GLboolean Integer
; /**< Integer-valued? */
1515 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1516 GLuint _ElementSize
; /**< size of each element in bytes */
1518 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1519 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1524 * Vertex attribute array as seen by the client.
1526 * Contains the size, type, format and normalization flag,
1527 * along with the index of a vertex buffer binding point.
1529 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1530 * and is only present for backwards compatibility reasons.
1531 * Rendering always uses VERTEX_BINDING_STRIDE.
1532 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1533 * and VERTEX_BINDING_STRIDE to the same value, while
1534 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1536 struct gl_vertex_attrib_array
1538 GLint Size
; /**< Components per element (1,2,3,4) */
1539 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1540 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1541 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1542 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1543 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1544 GLboolean Enabled
; /**< Whether the array is enabled */
1545 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1546 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1547 GLuint _ElementSize
; /**< Size of each element in bytes */
1548 GLuint VertexBinding
; /**< Vertex buffer binding */
1553 * This describes the buffer object used for a vertex array (or
1554 * multiple vertex arrays). If BufferObj points to the default/null
1555 * buffer object, then the vertex array lives in user memory and not a VBO.
1557 struct gl_vertex_buffer_binding
1559 GLintptr Offset
; /**< User-specified offset */
1560 GLsizei Stride
; /**< User-specified stride */
1561 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1562 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1563 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1568 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1569 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1572 struct gl_vertex_array_object
1574 /** Name of the VAO as received from glGenVertexArray. */
1576 GLchar
*Label
; /**< GL_KHR_debug */
1582 * Does the VAO use ARB semantics or Apple semantics?
1584 * There are several ways in which ARB_vertex_array_object and
1585 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1588 * - ARB VAOs require that all array data be sourced from vertex buffer
1589 * objects, but Apple VAOs do not.
1591 * - ARB VAOs require that names come from GenVertexArrays.
1593 * This flag notes which behavior governs this VAO.
1595 GLboolean ARBsemantics
;
1598 * Has this array object been bound?
1600 GLboolean EverBound
;
1603 * Derived vertex attribute arrays
1605 * This is a legacy data structure created from gl_vertex_attrib_array and
1606 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1608 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1610 /** Vertex attribute arrays */
1611 struct gl_vertex_attrib_array VertexAttrib
[VERT_ATTRIB_MAX
];
1613 /** Vertex buffer bindings */
1614 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1616 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1617 GLbitfield64 _Enabled
;
1619 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1620 GLbitfield64 NewArrays
;
1623 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1624 * we can determine the max legal (in bounds) glDrawElements array index.
1628 /** The index buffer (also known as the element array buffer in OpenGL). */
1629 struct gl_buffer_object
*IndexBufferObj
;
1634 * Vertex array state
1636 struct gl_array_attrib
1638 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1639 struct gl_vertex_array_object
*VAO
;
1641 /** The default vertex array object */
1642 struct gl_vertex_array_object
*DefaultVAO
;
1644 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1645 struct _mesa_HashTable
*Objects
;
1647 GLint ActiveTexture
; /**< Client Active Texture */
1648 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1649 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1652 * \name Primitive restart controls
1654 * Primitive restart is enabled if either \c PrimitiveRestart or
1655 * \c PrimitiveRestartFixedIndex is set.
1658 GLboolean PrimitiveRestart
;
1659 GLboolean PrimitiveRestartFixedIndex
;
1660 GLboolean _PrimitiveRestart
;
1661 GLuint RestartIndex
;
1664 /* GL_ARB_vertex_buffer_object */
1665 struct gl_buffer_object
*ArrayBufferObj
;
1668 * Vertex arrays as consumed by a driver.
1669 * The array pointer is set up only by the VBO module.
1671 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1676 * Feedback buffer state
1681 GLbitfield _Mask
; /**< FB_* bits */
1689 * Selection buffer state
1693 GLuint
*Buffer
; /**< selection buffer */
1694 GLuint BufferSize
; /**< size of the selection buffer */
1695 GLuint BufferCount
; /**< number of values in the selection buffer */
1696 GLuint Hits
; /**< number of records in the selection buffer */
1697 GLuint NameStackDepth
; /**< name stack depth */
1698 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1699 GLboolean HitFlag
; /**< hit flag */
1700 GLfloat HitMinZ
; /**< minimum hit depth */
1701 GLfloat HitMaxZ
; /**< maximum hit depth */
1706 * 1-D Evaluator control points
1710 GLuint Order
; /**< Number of control points */
1711 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1712 GLfloat
*Points
; /**< Points to contiguous control points */
1717 * 2-D Evaluator control points
1721 GLuint Uorder
; /**< Number of control points in U dimension */
1722 GLuint Vorder
; /**< Number of control points in V dimension */
1725 GLfloat
*Points
; /**< Points to contiguous control points */
1730 * All evaluator control point state
1732 struct gl_evaluators
1738 struct gl_1d_map Map1Vertex3
;
1739 struct gl_1d_map Map1Vertex4
;
1740 struct gl_1d_map Map1Index
;
1741 struct gl_1d_map Map1Color4
;
1742 struct gl_1d_map Map1Normal
;
1743 struct gl_1d_map Map1Texture1
;
1744 struct gl_1d_map Map1Texture2
;
1745 struct gl_1d_map Map1Texture3
;
1746 struct gl_1d_map Map1Texture4
;
1753 struct gl_2d_map Map2Vertex3
;
1754 struct gl_2d_map Map2Vertex4
;
1755 struct gl_2d_map Map2Index
;
1756 struct gl_2d_map Map2Color4
;
1757 struct gl_2d_map Map2Normal
;
1758 struct gl_2d_map Map2Texture1
;
1759 struct gl_2d_map Map2Texture2
;
1760 struct gl_2d_map Map2Texture3
;
1761 struct gl_2d_map Map2Texture4
;
1766 struct gl_transform_feedback_varying_info
1775 * Per-output info vertex shaders for transform feedback.
1777 struct gl_transform_feedback_output
1779 unsigned OutputRegister
;
1780 unsigned OutputBuffer
;
1781 unsigned NumComponents
;
1783 /** offset (in DWORDs) of this output within the interleaved structure */
1787 * Offset into the output register of the data to output. For example,
1788 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1789 * offset is in the y and z components of the output register.
1791 unsigned ComponentOffset
;
1795 /** Post-link transform feedback info. */
1796 struct gl_transform_feedback_info
1798 unsigned NumOutputs
;
1801 * Number of transform feedback buffers in use by this program.
1803 unsigned NumBuffers
;
1805 struct gl_transform_feedback_output
*Outputs
;
1807 /** Transform feedback varyings used for the linking of this shader program.
1809 * Use for glGetTransformFeedbackVarying().
1811 struct gl_transform_feedback_varying_info
*Varyings
;
1815 * Total number of components stored in each buffer. This may be used by
1816 * hardware back-ends to determine the correct stride when interleaving
1817 * multiple transform feedback outputs in the same buffer.
1819 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1824 * Transform feedback object state
1826 struct gl_transform_feedback_object
1828 GLuint Name
; /**< AKA the object ID */
1829 GLchar
*Label
; /**< GL_KHR_debug */
1831 GLboolean Active
; /**< Is transform feedback enabled? */
1832 GLboolean Paused
; /**< Is transform feedback paused? */
1833 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1835 GLboolean EverBound
; /**< Has this object been bound? */
1838 * The shader program active when BeginTransformFeedback() was called.
1839 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1840 * where stage is the pipeline stage that is the source of data for
1841 * transform feedback.
1843 struct gl_shader_program
*shader_program
;
1846 * GLES: if Active is true, remaining number of primitives which can be
1847 * rendered without overflow. This is necessary to track because GLES
1848 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1849 * glDrawArraysInstanced would overflow transform feedback buffers.
1850 * Undefined if Active is false.
1852 * Not tracked for desktop GL since it's unnecessary.
1854 unsigned GlesRemainingPrims
;
1856 /** The feedback buffers */
1857 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1858 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1860 /** Start of feedback data in dest buffer */
1861 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1864 * Max data to put into dest buffer (in bytes). Computed based on
1865 * RequestedSize and the actual size of the buffer.
1867 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1870 * Size that was specified when the buffer was bound. If the buffer was
1871 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1874 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1879 * Context state for transform feedback.
1881 struct gl_transform_feedback_state
1883 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1885 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1886 struct gl_buffer_object
*CurrentBuffer
;
1888 /** The table of all transform feedback objects */
1889 struct _mesa_HashTable
*Objects
;
1891 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1892 struct gl_transform_feedback_object
*CurrentObject
;
1894 /** The default xform-fb object (Name==0) */
1895 struct gl_transform_feedback_object
*DefaultObject
;
1900 * A "performance monitor" as described in AMD_performance_monitor.
1902 struct gl_perf_monitor_object
1906 /** True if the monitor is currently active (Begin called but not End). */
1910 * True if the monitor has ended.
1912 * This is distinct from !Active because it may never have began.
1917 * A list of groups with currently active counters.
1919 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1921 unsigned *ActiveGroups
;
1924 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1926 * Checking whether counter 'c' in group 'g' is active can be done via:
1928 * BITSET_TEST(ActiveCounters[g], c)
1930 GLuint
**ActiveCounters
;
1934 union gl_perf_monitor_counter_value
1942 struct gl_perf_monitor_counter
1944 /** Human readable name for the counter. */
1948 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1949 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1953 /** Minimum counter value. */
1954 union gl_perf_monitor_counter_value Minimum
;
1956 /** Maximum counter value. */
1957 union gl_perf_monitor_counter_value Maximum
;
1961 struct gl_perf_monitor_group
1963 /** Human readable name for the group. */
1967 * Maximum number of counters in this group which can be active at the
1970 GLuint MaxActiveCounters
;
1972 /** Array of counters within this group. */
1973 const struct gl_perf_monitor_counter
*Counters
;
1979 * Context state for AMD_performance_monitor.
1981 struct gl_perf_monitor_state
1983 /** Array of performance monitor groups (indexed by group ID) */
1984 const struct gl_perf_monitor_group
*Groups
;
1987 /** The table of all performance monitors. */
1988 struct _mesa_HashTable
*Monitors
;
1993 * Names of the various vertex/fragment program register files, etc.
1995 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1996 * All values should fit in a 4-bit field.
1998 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1999 * considered to be "uniform" variables since they can only be set outside
2000 * glBegin/End. They're also all stored in the same Parameters array.
2004 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
2005 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
2006 PROGRAM_INPUT
, /**< machine->Inputs[] */
2007 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
2008 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
2009 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
2010 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
2011 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
2012 PROGRAM_ADDRESS
, /**< machine->AddressReg */
2013 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
2014 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
2015 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
2021 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
2022 * one of these values.
2026 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
2027 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
2028 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
2029 SYSTEM_VALUE_SAMPLE_ID
, /**< Fragment shader only */
2030 SYSTEM_VALUE_SAMPLE_POS
, /**< Fragment shader only */
2031 SYSTEM_VALUE_SAMPLE_MASK_IN
, /**< Fragment shader only */
2032 SYSTEM_VALUE_INVOCATION_ID
, /**< Geometry shader only */
2033 SYSTEM_VALUE_MAX
/**< Number of values */
2038 * The possible interpolation qualifiers that can be applied to a fragment
2039 * shader input in GLSL.
2041 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
2042 * gl_fragment_program data structure to 0 causes the default behavior.
2044 enum glsl_interp_qualifier
2046 INTERP_QUALIFIER_NONE
= 0,
2047 INTERP_QUALIFIER_SMOOTH
,
2048 INTERP_QUALIFIER_FLAT
,
2049 INTERP_QUALIFIER_NOPERSPECTIVE
,
2050 INTERP_QUALIFIER_COUNT
/**< Number of interpolation qualifiers */
2055 * \brief Layout qualifiers for gl_FragDepth.
2057 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
2058 * a layout qualifier.
2060 * \see enum ir_depth_layout
2062 enum gl_frag_depth_layout
2064 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
2065 FRAG_DEPTH_LAYOUT_ANY
,
2066 FRAG_DEPTH_LAYOUT_GREATER
,
2067 FRAG_DEPTH_LAYOUT_LESS
,
2068 FRAG_DEPTH_LAYOUT_UNCHANGED
2073 * Base class for any kind of program object
2078 GLubyte
*String
; /**< Null-terminated program text */
2080 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2081 GLenum Format
; /**< String encoding format */
2083 struct prog_instruction
*Instructions
;
2085 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
2086 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
2087 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
2088 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
2089 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
2090 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
2091 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
2092 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
2094 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
2097 * For vertex and geometry shaders, true if the program uses the
2098 * gl_ClipDistance output. Ignored for fragment shaders.
2100 GLboolean UsesClipDistanceOut
;
2103 /** Named parameters, constants, etc. from program text */
2104 struct gl_program_parameter_list
*Parameters
;
2107 * Local parameters used by the program.
2109 * It's dynamically allocated because it is rarely used (just
2110 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
2113 GLfloat (*LocalParams
)[4];
2115 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2116 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2118 /** Bitmask of which register files are read/written with indirect
2119 * addressing. Mask of (1 << PROGRAM_x) bits.
2121 GLbitfield IndirectRegisterFiles
;
2123 /** Logical counts */
2125 GLuint NumInstructions
;
2126 GLuint NumTemporaries
;
2127 GLuint NumParameters
;
2128 GLuint NumAttributes
;
2129 GLuint NumAddressRegs
;
2130 GLuint NumAluInstructions
;
2131 GLuint NumTexInstructions
;
2132 GLuint NumTexIndirections
;
2134 /** Native, actual h/w counts */
2136 GLuint NumNativeInstructions
;
2137 GLuint NumNativeTemporaries
;
2138 GLuint NumNativeParameters
;
2139 GLuint NumNativeAttributes
;
2140 GLuint NumNativeAddressRegs
;
2141 GLuint NumNativeAluInstructions
;
2142 GLuint NumNativeTexInstructions
;
2143 GLuint NumNativeTexIndirections
;
2148 /** Vertex program object */
2149 struct gl_vertex_program
2151 struct gl_program Base
; /**< base class */
2152 GLboolean IsPositionInvariant
;
2156 /** Geometry program object */
2157 struct gl_geometry_program
2159 struct gl_program Base
; /**< base class */
2164 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2165 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2166 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2167 GLboolean UsesEndPrimitive
;
2171 /** Fragment program object */
2172 struct gl_fragment_program
2174 struct gl_program Base
; /**< base class */
2175 GLboolean UsesKill
; /**< shader uses KIL instruction */
2176 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
2177 GLboolean OriginUpperLeft
;
2178 GLboolean PixelCenterInteger
;
2179 enum gl_frag_depth_layout FragDepthLayout
;
2182 * GLSL interpolation qualifier associated with each fragment shader input.
2183 * For inputs that do not have an interpolation qualifier specified in
2184 * GLSL, the value is INTERP_QUALIFIER_NONE.
2186 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
2189 * Bitfield indicating, for each fragment shader input, 1 if that input
2190 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2192 GLbitfield64 IsCentroid
;
2195 * Bitfield indicating, for each fragment shader input, 1 if that input
2196 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2198 GLbitfield64 IsSample
;
2202 /** Compute program object */
2203 struct gl_compute_program
2205 struct gl_program Base
; /**< base class */
2208 * Size specified using local_size_{x,y,z}.
2210 unsigned LocalSize
[3];
2215 * State common to vertex and fragment programs.
2217 struct gl_program_state
2219 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2220 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2225 * Context state for vertex programs.
2227 struct gl_vertex_program_state
2229 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2230 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2231 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2232 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2233 /** Computed two sided lighting for fixed function/programs. */
2234 GLboolean _TwoSideEnabled
;
2235 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2237 /** Currently enabled and valid vertex program (including internal
2238 * programs, user-defined vertex programs and GLSL vertex shaders).
2239 * This is the program we must use when rendering.
2241 struct gl_vertex_program
*_Current
;
2243 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2245 /** Should fixed-function T&L be implemented with a vertex prog? */
2246 GLboolean _MaintainTnlProgram
;
2248 /** Program to emulate fixed-function T&L (see above) */
2249 struct gl_vertex_program
*_TnlProgram
;
2251 /** Cache of fixed-function programs */
2252 struct gl_program_cache
*Cache
;
2254 GLboolean _Overriden
;
2259 * Context state for geometry programs.
2261 struct gl_geometry_program_state
2263 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2264 GLboolean _Enabled
; /**< Enabled and valid program? */
2265 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2267 /** Currently enabled and valid program (including internal programs
2268 * and compiled shader programs).
2270 struct gl_geometry_program
*_Current
;
2272 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2274 /** Cache of fixed-function programs */
2275 struct gl_program_cache
*Cache
;
2279 * Context state for fragment programs.
2281 struct gl_fragment_program_state
2283 GLboolean Enabled
; /**< User-set fragment program enable flag */
2284 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2285 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2287 /** Currently enabled and valid fragment program (including internal
2288 * programs, user-defined fragment programs and GLSL fragment shaders).
2289 * This is the program we must use when rendering.
2291 struct gl_fragment_program
*_Current
;
2293 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2295 /** Should fixed-function texturing be implemented with a fragment prog? */
2296 GLboolean _MaintainTexEnvProgram
;
2298 /** Program to emulate fixed-function texture env/combine (see above) */
2299 struct gl_fragment_program
*_TexEnvProgram
;
2301 /** Cache of fixed-function programs */
2302 struct gl_program_cache
*Cache
;
2307 * ATI_fragment_shader runtime state
2309 #define ATI_FS_INPUT_PRIMARY 0
2310 #define ATI_FS_INPUT_SECONDARY 1
2312 struct atifs_instruction
;
2313 struct atifs_setupinst
;
2316 * ATI fragment shader
2318 struct ati_fragment_shader
2322 struct atifs_instruction
*Instructions
[2];
2323 struct atifs_setupinst
*SetupInst
[2];
2324 GLfloat Constants
[8][4];
2325 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2326 GLubyte numArithInstr
[2];
2327 GLubyte regsAssigned
[2];
2328 GLubyte NumPasses
; /**< 1 or 2 */
2330 GLubyte last_optype
;
2331 GLboolean interpinp1
;
2337 * Context state for GL_ATI_fragment_shader
2339 struct gl_ati_fragment_shader_state
2342 GLboolean _Enabled
; /**< enabled and valid shader? */
2343 GLboolean Compiling
;
2344 GLfloat GlobalConstants
[8][4];
2345 struct ati_fragment_shader
*Current
;
2349 /** Set by #pragma directives */
2350 struct gl_sl_pragmas
2352 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2353 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2354 GLboolean Optimize
; /**< defaults on */
2355 GLboolean Debug
; /**< defaults off */
2360 * A GLSL vertex or fragment shader object.
2364 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2365 * Must be the first field.
2368 gl_shader_stage Stage
;
2369 GLuint Name
; /**< AKA the handle */
2370 GLchar
*Label
; /**< GL_KHR_debug */
2371 GLint RefCount
; /**< Reference count */
2372 GLboolean DeletePending
;
2373 GLboolean CompileStatus
;
2374 const GLchar
*Source
; /**< Source code string */
2375 GLuint SourceChecksum
; /**< for debug/logging purposes */
2376 struct gl_program
*Program
; /**< Post-compile assembly code */
2378 struct gl_sl_pragmas Pragmas
;
2380 unsigned Version
; /**< GLSL version used for linking */
2381 GLboolean IsES
; /**< True if this shader uses GLSL ES */
2384 * \name Sampler tracking
2386 * \note Each of these fields is only set post-linking.
2389 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2390 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2391 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2395 * Map from sampler unit to texture unit (set by glUniform1i())
2397 * A sampler unit is associated with each sampler uniform by the linker.
2398 * The sampler unit associated with each uniform is stored in the
2399 * \c gl_uniform_storage::sampler field.
2401 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2402 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2403 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2406 * Number of default uniform block components used by this shader.
2408 * This field is only set post-linking.
2410 unsigned num_uniform_components
;
2413 * Number of combined uniform components used by this shader.
2415 * This field is only set post-linking. It is the sum of the uniform block
2416 * sizes divided by sizeof(float), and num_uniform_compoennts.
2418 unsigned num_combined_uniform_components
;
2421 * This shader's uniform block information.
2423 * The offsets of the variables are assigned only for shaders in a program's
2426 struct gl_uniform_block
*UniformBlocks
;
2427 unsigned NumUniformBlocks
;
2429 struct exec_list
*ir
;
2430 struct glsl_symbol_table
*symbols
;
2432 bool uses_builtin_functions
;
2435 * Geometry shader state from GLSL 1.50 layout qualifiers.
2440 * 0 - Invocations count not declared in shader, or
2441 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2445 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2446 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2451 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2452 * it's not set in this shader.
2458 * Map from image uniform index to image unit (set by glUniform1i())
2460 * An image uniform index is associated with each image uniform by
2461 * the linker. The image index associated with each uniform is
2462 * stored in the \c gl_uniform_storage::image field.
2464 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2467 * Access qualifier specified in the shader for each image uniform
2468 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2471 * It may be different, though only more strict than the value of
2472 * \c gl_image_unit::Access for the corresponding image unit.
2474 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2477 * Number of image uniforms defined in the shader. It specifies
2478 * the number of valid elements in the \c ImageUnits and \c
2479 * ImageAccess arrays above.
2484 * Compute shader state from ARB_compute_shader layout qualifiers.
2488 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2489 * it's not set in this shader.
2491 unsigned LocalSize
[3];
2496 struct gl_uniform_buffer_variable
2501 * Name of the uniform as seen by glGetUniformIndices.
2503 * glGetUniformIndices requires that the block instance index \b not be
2504 * present in the name of queried uniforms.
2507 * \c gl_uniform_buffer_variable::IndexName and
2508 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2512 const struct glsl_type
*Type
;
2513 unsigned int Offset
;
2518 enum gl_uniform_block_packing
2526 struct gl_uniform_block
2528 /** Declared name of the uniform block */
2531 /** Array of supplemental information about UBO ir_variables. */
2532 struct gl_uniform_buffer_variable
*Uniforms
;
2536 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2537 * with glBindBufferBase to bind a buffer object to this uniform block. When
2538 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2543 * Minimum size of a buffer object to back this uniform buffer
2544 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2546 GLuint UniformBufferSize
;
2549 * Layout specified in the shader
2551 * This isn't accessible through the API, but it is used while
2552 * cross-validating uniform blocks.
2554 enum gl_uniform_block_packing _Packing
;
2558 * Structure that represents a reference to an atomic buffer from some
2561 struct gl_active_atomic_buffer
2563 /** Uniform indices of the atomic counters declared within it. */
2567 /** Binding point index associated with it. */
2570 /** Minimum reasonable size it is expected to have. */
2573 /** Shader stages making use of it. */
2574 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2578 * A GLSL program object.
2579 * Basically a linked collection of vertex and fragment shaders.
2581 struct gl_shader_program
2583 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2584 GLuint Name
; /**< aka handle or ID */
2585 GLchar
*Label
; /**< GL_KHR_debug */
2586 GLint RefCount
; /**< Reference count */
2587 GLboolean DeletePending
;
2590 * Is the application intending to glGetProgramBinary this program?
2592 GLboolean BinaryRetreivableHint
;
2595 * Flags that the linker should not reject the program if it lacks
2596 * a vertex or fragment shader. GLES2 doesn't allow separate
2597 * shader objects, and would reject them. However, we internally
2598 * build separate shader objects for fixed function programs, which
2599 * we use for drivers/common/meta.c and for handling
2600 * _mesa_update_state with no program bound (for example in
2603 GLboolean InternalSeparateShader
;
2606 * Indicates whether program can be bound for individual pipeline stages
2607 * using UseProgramStages after it is next linked.
2609 GLboolean SeparateShader
;
2611 GLuint NumShaders
; /**< number of attached shaders */
2612 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2615 * User-defined attribute bindings
2617 * These are set via \c glBindAttribLocation and are used to direct the
2618 * GLSL linker. These are \b not the values used in the compiled shader,
2619 * and they are \b not the values returned by \c glGetAttribLocation.
2621 struct string_to_uint_map
*AttributeBindings
;
2624 * User-defined fragment data bindings
2626 * These are set via \c glBindFragDataLocation and are used to direct the
2627 * GLSL linker. These are \b not the values used in the compiled shader,
2628 * and they are \b not the values returned by \c glGetFragDataLocation.
2630 struct string_to_uint_map
*FragDataBindings
;
2631 struct string_to_uint_map
*FragDataIndexBindings
;
2634 * Transform feedback varyings last specified by
2635 * glTransformFeedbackVaryings().
2637 * For the current set of transform feeedback varyings used for transform
2638 * feedback output, see LinkedTransformFeedback.
2643 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2644 } TransformFeedback
;
2646 /** Post-link transform feedback info. */
2647 struct gl_transform_feedback_info LinkedTransformFeedback
;
2649 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2650 enum gl_frag_depth_layout FragDepthLayout
;
2653 * Geometry shader state - copied into gl_geometry_program by
2654 * _mesa_copy_linked_program_data().
2660 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2663 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2664 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2665 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2667 * True if gl_ClipDistance is written to. Copied into
2668 * gl_geometry_program by _mesa_copy_linked_program_data().
2670 GLboolean UsesClipDistance
;
2671 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2672 0 if not present. */
2673 GLboolean UsesEndPrimitive
;
2676 /** Vertex shader state */
2679 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2680 * by _mesa_copy_linked_program_data().
2682 GLboolean UsesClipDistance
;
2683 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2684 0 if not present. */
2688 * Compute shader state - copied into gl_compute_program by
2689 * _mesa_copy_linked_program_data().
2693 * If this shader contains a compute stage, size specified using
2694 * local_size_{x,y,z}. Otherwise undefined.
2696 unsigned LocalSize
[3];
2699 /* post-link info: */
2700 unsigned NumUserUniformStorage
;
2701 struct gl_uniform_storage
*UniformStorage
;
2704 * Size of the gl_ClipDistance array that is output from the last pipeline
2705 * stage before the fragment shader.
2707 unsigned LastClipDistanceArraySize
;
2709 struct gl_uniform_block
*UniformBlocks
;
2710 unsigned NumUniformBlocks
;
2713 * Scale factor for the uniform base location
2715 * This is used to generate locations (returned by \c glGetUniformLocation)
2716 * of uniforms. The base location of the uniform is multiplied by this
2717 * value, and the array index is added.
2723 * _mesa_uniform_merge_location_offset, _mesa_uniform_split_location_offset
2725 unsigned UniformLocationBaseScale
;
2728 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2729 * they're used in, or -1.
2731 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2732 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2734 int *UniformBlockStageIndex
[MESA_SHADER_STAGES
];
2737 * Map of active uniform names to locations
2739 * Maps any active uniform that is not an array element to a location.
2740 * Each active uniform, including individual structure members will appear
2741 * in this map. This roughly corresponds to the set of names that would be
2742 * enumerated by \c glGetActiveUniform.
2744 struct string_to_uint_map
*UniformHash
;
2746 struct gl_active_atomic_buffer
*AtomicBuffers
;
2747 unsigned NumAtomicBuffers
;
2749 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2750 GLboolean Validated
;
2751 GLboolean _Used
; /**< Ever used for drawing? */
2754 unsigned Version
; /**< GLSL version used for linking */
2755 GLboolean IsES
; /**< True if this program uses GLSL ES */
2758 * Per-stage shaders resulting from the first stage of linking.
2760 * Set of linked shaders for this program. The array is accessed using the
2761 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2764 struct gl_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2768 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2769 #define GLSL_LOG 0x2 /**< Write shaders to files */
2770 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2771 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2772 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2773 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2774 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2775 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2776 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2777 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2781 * Context state for GLSL vertex/fragment shaders.
2782 * Extended to support pipeline object
2784 struct gl_pipeline_object
2786 /** Name of the pipeline object as received from glGenProgramPipelines.
2787 * It would be 0 for shaders without separate shader objects.
2796 * Programs used for rendering
2798 * There is a separate program set for each shader stage. If
2799 * GL_EXT_separate_shader_objects is not supported, each of these must point
2800 * to \c NULL or to the same program.
2802 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2804 struct gl_shader_program
*_CurrentFragmentProgram
;
2807 * Program used by glUniform calls.
2809 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2811 struct gl_shader_program
*ActiveProgram
;
2813 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2815 GLboolean EverBound
; /**< Has the pipeline object been created */
2819 * Context state for GLSL pipeline shaders.
2821 struct gl_pipeline_shader_state
2823 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2824 struct gl_pipeline_object
*Current
;
2826 /** Pipeline objects */
2827 struct _mesa_HashTable
*Objects
;
2831 * Compiler options for a single GLSL shaders type
2833 struct gl_shader_compiler_options
2835 /** Driver-selectable options: */
2836 GLboolean EmitCondCodes
; /**< Use condition codes? */
2837 GLboolean EmitNoLoops
;
2838 GLboolean EmitNoFunctions
;
2839 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2840 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2841 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2842 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2843 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2846 * \name Forms of indirect addressing the driver cannot do.
2849 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2850 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2851 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2852 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2855 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2856 GLuint MaxUnrollIterations
;
2859 * Optimize code for array of structures backends.
2861 * This is a proxy for:
2862 * - preferring DP4 instructions (rather than MUL/MAD) for
2863 * matrix * vector operations, such as position transformation.
2865 GLboolean OptimizeForAOS
;
2867 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2872 * Occlusion/timer query object.
2874 struct gl_query_object
2876 GLenum Target
; /**< The query target, when active */
2877 GLuint Id
; /**< hash table ID/name */
2878 GLchar
*Label
; /**< GL_KHR_debug */
2879 GLuint64EXT Result
; /**< the counter */
2880 GLboolean Active
; /**< inside Begin/EndQuery */
2881 GLboolean Ready
; /**< result is ready? */
2882 GLboolean EverBound
;/**< has query object ever been bound */
2887 * Context state for query objects.
2889 struct gl_query_state
2891 struct _mesa_HashTable
*QueryObjects
;
2892 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2893 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2895 /** GL_NV_conditional_render */
2896 struct gl_query_object
*CondRenderQuery
;
2898 /** GL_EXT_transform_feedback */
2899 struct gl_query_object
*PrimitivesGenerated
;
2900 struct gl_query_object
*PrimitivesWritten
;
2902 /** GL_ARB_timer_query */
2903 struct gl_query_object
*TimeElapsed
;
2905 GLenum CondRenderMode
;
2909 /** Sync object state */
2910 struct gl_sync_object
2912 GLenum Type
; /**< GL_SYNC_FENCE */
2913 GLuint Name
; /**< Fence name */
2914 GLchar
*Label
; /**< GL_KHR_debug */
2915 GLint RefCount
; /**< Reference count */
2916 GLboolean DeletePending
; /**< Object was deleted while there were still
2917 * live references (e.g., sync not yet finished)
2919 GLenum SyncCondition
;
2920 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2921 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2926 * State which can be shared by multiple contexts:
2928 struct gl_shared_state
2930 mtx_t Mutex
; /**< for thread safety */
2931 GLint RefCount
; /**< Reference count */
2932 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2933 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2935 /** Default texture objects (shared by all texture units) */
2936 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2938 /** Fallback texture used when a bound texture is incomplete */
2939 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2942 * \name Thread safety and statechange notification for texture
2945 * \todo Improve the granularity of locking.
2948 mtx_t TexMutex
; /**< texobj thread safety */
2949 GLuint TextureStateStamp
; /**< state notification for shared tex */
2952 /** Default buffer object for vertex arrays that aren't in VBOs */
2953 struct gl_buffer_object
*NullBufferObj
;
2956 * \name Vertex/geometry/fragment programs
2959 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2960 struct gl_vertex_program
*DefaultVertexProgram
;
2961 struct gl_fragment_program
*DefaultFragmentProgram
;
2962 struct gl_geometry_program
*DefaultGeometryProgram
;
2965 /* GL_ATI_fragment_shader */
2966 struct _mesa_HashTable
*ATIShaders
;
2967 struct ati_fragment_shader
*DefaultFragmentShader
;
2969 struct _mesa_HashTable
*BufferObjects
;
2971 /** Table of both gl_shader and gl_shader_program objects */
2972 struct _mesa_HashTable
*ShaderObjects
;
2974 /* GL_EXT_framebuffer_object */
2975 struct _mesa_HashTable
*RenderBuffers
;
2976 struct _mesa_HashTable
*FrameBuffers
;
2979 struct set
*SyncObjects
;
2981 /** GL_ARB_sampler_objects */
2982 struct _mesa_HashTable
*SamplerObjects
;
2985 * Some context in this share group was affected by a GPU reset
2987 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
2988 * been affected by a GPU reset must also return
2989 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
2991 * Once this field becomes true, it is never reset to false.
2993 bool ShareGroupReset
;
2999 * Renderbuffers represent drawing surfaces such as color, depth and/or
3000 * stencil. A framebuffer object has a set of renderbuffers.
3001 * Drivers will typically derive subclasses of this type.
3003 struct gl_renderbuffer
3005 mtx_t Mutex
; /**< for thread safety */
3006 GLuint ClassID
; /**< Useful for drivers */
3008 GLchar
*Label
; /**< GL_KHR_debug */
3010 GLuint Width
, Height
;
3012 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3013 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3015 * True for renderbuffers that wrap textures, giving the driver a chance to
3016 * flush render caches through the FinishRenderTexture hook.
3018 * Drivers may also set this on renderbuffers other than those generated by
3019 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3020 * called without a rb->TexImage.
3022 GLboolean NeedsFinishRenderTexture
;
3024 GLenum InternalFormat
; /**< The user-specified format */
3025 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3026 GL_STENCIL_INDEX. */
3027 mesa_format Format
; /**< The actual renderbuffer memory format */
3029 * Pointer to the texture image if this renderbuffer wraps a texture,
3032 * Note that the reference on the gl_texture_object containing this
3033 * TexImage is held by the gl_renderbuffer_attachment.
3035 struct gl_texture_image
*TexImage
;
3037 /** Delete this renderbuffer */
3038 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3040 /** Allocate new storage for this renderbuffer */
3041 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3042 struct gl_renderbuffer
*rb
,
3043 GLenum internalFormat
,
3044 GLuint width
, GLuint height
);
3049 * A renderbuffer attachment points to either a texture object (and specifies
3050 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3052 struct gl_renderbuffer_attachment
3054 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3058 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3059 * application supplied renderbuffer object.
3061 struct gl_renderbuffer
*Renderbuffer
;
3064 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3065 * supplied texture object.
3067 struct gl_texture_object
*Texture
;
3068 GLuint TextureLevel
; /**< Attached mipmap level. */
3069 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3070 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3071 * and 2D array textures */
3077 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3078 * In C++ terms, think of this as a base class from which device drivers
3079 * will make derived classes.
3081 struct gl_framebuffer
3083 mtx_t Mutex
; /**< for thread safety */
3085 * If zero, this is a window system framebuffer. If non-zero, this
3086 * is a FBO framebuffer; note that for some devices (i.e. those with
3087 * a natural pixel coordinate system for FBOs that differs from the
3088 * OpenGL/Mesa coordinate system), this means that the viewport,
3089 * polygon face orientation, and polygon stipple will have to be inverted.
3092 GLchar
*Label
; /**< GL_KHR_debug */
3095 GLboolean DeletePending
;
3098 * The framebuffer's visual. Immutable if this is a window system buffer.
3099 * Computed from attachments if user-made FBO.
3101 struct gl_config Visual
;
3103 GLuint Width
, Height
; /**< size of frame buffer in pixels */
3105 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
3107 GLint _Xmin
, _Xmax
; /**< inclusive */
3108 GLint _Ymin
, _Ymax
; /**< exclusive */
3111 /** \name Derived Z buffer stuff */
3113 GLuint _DepthMax
; /**< Max depth buffer value */
3114 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3115 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3118 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3121 /** Integer color values */
3122 GLboolean _IntegerColor
;
3124 /* ARB_color_buffer_float */
3125 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3126 GLboolean _HasSNormOrFloatColorBuffer
;
3128 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3129 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3131 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3132 * attribute group and GL_PIXEL attribute group, respectively.
3134 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3135 GLenum ColorReadBuffer
;
3137 /** Computed from ColorDraw/ReadBuffer above */
3138 GLuint _NumColorDrawBuffers
;
3139 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3140 GLint _ColorReadBufferIndex
; /* -1 = None */
3141 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3142 struct gl_renderbuffer
*_ColorReadBuffer
;
3145 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3146 * is not layered. For cube maps and cube map arrays, each cube face
3147 * counts as a layer.
3149 GLuint MaxNumLayers
;
3151 /** Delete this framebuffer */
3152 void (*Delete
)(struct gl_framebuffer
*fb
);
3157 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3161 GLushort RangeMin
; /**< min value exponent */
3162 GLushort RangeMax
; /**< max value exponent */
3163 GLushort Precision
; /**< number of mantissa bits */
3168 * Limits for vertex, geometry and fragment programs/shaders.
3170 struct gl_program_constants
3172 /* logical limits */
3173 GLuint MaxInstructions
;
3174 GLuint MaxAluInstructions
;
3175 GLuint MaxTexInstructions
;
3176 GLuint MaxTexIndirections
;
3179 GLuint MaxAddressRegs
;
3180 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3181 GLuint MaxParameters
;
3182 GLuint MaxLocalParams
;
3183 GLuint MaxEnvParams
;
3184 /* native/hardware limits */
3185 GLuint MaxNativeInstructions
;
3186 GLuint MaxNativeAluInstructions
;
3187 GLuint MaxNativeTexInstructions
;
3188 GLuint MaxNativeTexIndirections
;
3189 GLuint MaxNativeAttribs
;
3190 GLuint MaxNativeTemps
;
3191 GLuint MaxNativeAddressRegs
;
3192 GLuint MaxNativeParameters
;
3194 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3197 * \name Per-stage input / output limits
3199 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3200 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3201 * ES). This is stored as \c gl_constants::MaxVarying.
3203 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3204 * variables. Each stage as a certain number of outputs that it can feed
3205 * to the next stage and a certain number inputs that it can consume from
3206 * the previous stage.
3208 * Vertex shader inputs do not participate this in this accounting.
3209 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3211 * Fragment shader outputs do not participate this in this accounting.
3212 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3215 GLuint MaxInputComponents
;
3216 GLuint MaxOutputComponents
;
3219 /* ES 2.0 and GL_ARB_ES2_compatibility */
3220 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3221 struct gl_precision LowInt
, MediumInt
, HighInt
;
3222 /* GL_ARB_uniform_buffer_object */
3223 GLuint MaxUniformBlocks
;
3224 GLuint MaxCombinedUniformComponents
;
3225 GLuint MaxTextureImageUnits
;
3227 /* GL_ARB_shader_atomic_counters */
3228 GLuint MaxAtomicBuffers
;
3229 GLuint MaxAtomicCounters
;
3231 /* GL_ARB_shader_image_load_store */
3232 GLuint MaxImageUniforms
;
3237 * Constants which may be overridden by device driver during context creation
3238 * but are never changed after that.
3242 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3243 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3244 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3245 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3246 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3247 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3248 GLuint MaxTextureCoordUnits
;
3249 GLuint MaxCombinedTextureImageUnits
;
3250 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3251 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3252 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3253 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3255 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3257 GLuint MaxArrayLockSize
;
3261 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3262 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3263 GLfloat PointSizeGranularity
;
3264 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3265 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3266 GLfloat LineWidthGranularity
;
3268 GLuint MaxClipPlanes
;
3270 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3271 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3273 GLuint MaxViewportWidth
, MaxViewportHeight
;
3274 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3275 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3279 } ViewportBounds
; /**< GL_ARB_viewport_array */
3281 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3282 GLuint MaxProgramMatrices
;
3283 GLuint MaxProgramMatrixStackDepth
;
3286 GLuint SamplesPassed
;
3289 GLuint PrimitivesGenerated
;
3290 GLuint PrimitivesWritten
;
3293 /** vertex array / buffer object bounds checking */
3294 GLboolean CheckArrayBounds
;
3296 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3298 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3299 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3300 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3302 /** Number of varying vectors between any two shader stages. */
3306 * GL_ARB_uniform_buffer_object
3308 GLuint MaxCombinedUniformBlocks
;
3309 GLuint MaxUniformBufferBindings
;
3310 GLuint MaxUniformBlockSize
;
3311 GLuint UniformBufferOffsetAlignment
;
3314 /** GL_ARB_geometry_shader4 */
3315 GLuint MaxGeometryOutputVertices
;
3316 GLuint MaxGeometryTotalOutputComponents
;
3318 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
3321 * Changes default GLSL extension behavior from "error" to "warn". It's out
3322 * of spec, but it can make some apps work that otherwise wouldn't.
3324 GLboolean ForceGLSLExtensionsWarn
;
3327 * If non-zero, forces GLSL shaders without the #version directive to behave
3328 * as if they began with "#version ForceGLSLVersion".
3330 GLuint ForceGLSLVersion
;
3333 * Does the driver support real 32-bit integers? (Otherwise, integers are
3334 * simulated via floats.)
3336 GLboolean NativeIntegers
;
3339 * If the driver supports real 32-bit integers, what integer value should be
3340 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3342 GLuint UniformBooleanTrue
;
3344 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
3345 GLbitfield SupportedBumpUnits
;
3348 * Maximum amount of time, measured in nanseconds, that the server can wait.
3350 GLuint64 MaxServerWaitTimeout
;
3352 /** GL_EXT_provoking_vertex */
3353 GLboolean QuadsFollowProvokingVertexConvention
;
3355 /** OpenGL version 3.0 */
3356 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3358 /** OpenGL version 3.2 */
3359 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3361 /** GL_EXT_transform_feedback */
3362 GLuint MaxTransformFeedbackBuffers
;
3363 GLuint MaxTransformFeedbackSeparateComponents
;
3364 GLuint MaxTransformFeedbackInterleavedComponents
;
3365 GLuint MaxVertexStreams
;
3367 /** GL_EXT_gpu_shader4 */
3368 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3370 /** GL_ARB_texture_gather */
3371 GLuint MinProgramTextureGatherOffset
;
3372 GLuint MaxProgramTextureGatherOffset
;
3373 GLuint MaxProgramTextureGatherComponents
;
3375 /* GL_ARB_robustness */
3376 GLenum ResetStrategy
;
3378 /* GL_ARB_blend_func_extended */
3379 GLuint MaxDualSourceDrawBuffers
;
3382 * Whether the implementation strips out and ignores texture borders.
3384 * Many GPU hardware implementations don't support rendering with texture
3385 * borders and mipmapped textures. (Note: not static border color, but the
3386 * old 1-pixel border around each edge). Implementations then have to do
3387 * slow fallbacks to be correct, or just ignore the border and be fast but
3388 * wrong. Setting the flag strips the border off of TexImage calls,
3389 * providing "fast but wrong" at significantly reduced driver complexity.
3391 * Texture borders are deprecated in GL 3.0.
3393 GLboolean StripTextureBorder
;
3396 * For drivers which can do a better job at eliminating unused uniforms
3397 * than the GLSL compiler.
3399 * XXX Remove these as soon as a better solution is available.
3401 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3404 * Force software support for primitive restart in the VBO module.
3406 GLboolean PrimitiveRestartInSoftware
;
3409 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3410 * than passing the transform feedback object to the drawing function.
3412 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3414 /** GL_ARB_map_buffer_alignment */
3415 GLuint MinMapBufferAlignment
;
3418 * Disable varying packing. This is out of spec, but potentially useful
3419 * for older platforms that supports a limited number of texture
3420 * indirections--on these platforms, unpacking the varyings in the fragment
3421 * shader increases the number of texture indirections by 1, which might
3422 * make some shaders not executable at all.
3424 * Drivers that support transform feedback must set this value to GL_FALSE.
3426 GLboolean DisableVaryingPacking
;
3429 * Maximum value supported for an index in DrawElements and friends.
3431 * This must be at least (1ull<<24)-1. The default value is
3434 * \since ES 3.0 or GL_ARB_ES3_compatibility
3435 * \sa _mesa_init_constants
3437 GLuint64 MaxElementIndex
;
3440 * Disable interpretation of line continuations (lines ending with a
3441 * backslash character ('\') in GLSL source.
3443 GLboolean DisableGLSLLineContinuations
;
3445 /** GL_ARB_texture_multisample */
3446 GLint MaxColorTextureSamples
;
3447 GLint MaxDepthTextureSamples
;
3448 GLint MaxIntegerSamples
;
3450 /** GL_ARB_shader_atomic_counters */
3451 GLuint MaxAtomicBufferBindings
;
3452 GLuint MaxAtomicBufferSize
;
3453 GLuint MaxCombinedAtomicBuffers
;
3454 GLuint MaxCombinedAtomicCounters
;
3456 /** GL_ARB_vertex_attrib_binding */
3457 GLint MaxVertexAttribRelativeOffset
;
3458 GLint MaxVertexAttribBindings
;
3460 /* GL_ARB_shader_image_load_store */
3461 GLuint MaxImageUnits
;
3462 GLuint MaxCombinedImageUnitsAndFragmentOutputs
;
3463 GLuint MaxImageSamples
;
3464 GLuint MaxCombinedImageUniforms
;
3466 /** GL_ARB_compute_shader */
3467 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3468 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3469 GLuint MaxComputeWorkGroupInvocations
;
3471 /** GL_ARB_gpu_shader5 */
3472 GLfloat MinFragmentInterpolationOffset
;
3473 GLfloat MaxFragmentInterpolationOffset
;
3478 * Enable flag for each OpenGL extension. Different device drivers will
3479 * enable different extensions at runtime.
3481 struct gl_extensions
3483 GLboolean dummy
; /* don't remove this! */
3484 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3485 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3486 GLboolean ANGLE_texture_compression_dxt
;
3487 GLboolean ARB_ES2_compatibility
;
3488 GLboolean ARB_ES3_compatibility
;
3489 GLboolean ARB_arrays_of_arrays
;
3490 GLboolean ARB_base_instance
;
3491 GLboolean ARB_blend_func_extended
;
3492 GLboolean ARB_buffer_storage
;
3493 GLboolean ARB_color_buffer_float
;
3494 GLboolean ARB_compute_shader
;
3495 GLboolean ARB_conservative_depth
;
3496 GLboolean ARB_depth_buffer_float
;
3497 GLboolean ARB_depth_clamp
;
3498 GLboolean ARB_depth_texture
;
3499 GLboolean ARB_draw_buffers_blend
;
3500 GLboolean ARB_draw_elements_base_vertex
;
3501 GLboolean ARB_draw_indirect
;
3502 GLboolean ARB_draw_instanced
;
3503 GLboolean ARB_fragment_coord_conventions
;
3504 GLboolean ARB_fragment_program
;
3505 GLboolean ARB_fragment_program_shadow
;
3506 GLboolean ARB_fragment_shader
;
3507 GLboolean ARB_framebuffer_object
;
3508 GLboolean ARB_explicit_attrib_location
;
3509 GLboolean ARB_geometry_shader4
;
3510 GLboolean ARB_gpu_shader5
;
3511 GLboolean ARB_half_float_vertex
;
3512 GLboolean ARB_instanced_arrays
;
3513 GLboolean ARB_internalformat_query
;
3514 GLboolean ARB_map_buffer_range
;
3515 GLboolean ARB_occlusion_query
;
3516 GLboolean ARB_occlusion_query2
;
3517 GLboolean ARB_point_sprite
;
3518 GLboolean ARB_sample_shading
;
3519 GLboolean ARB_seamless_cube_map
;
3520 GLboolean ARB_separate_shader_objects
;
3521 GLboolean ARB_shader_atomic_counters
;
3522 GLboolean ARB_shader_bit_encoding
;
3523 GLboolean ARB_shader_image_load_store
;
3524 GLboolean ARB_shader_stencil_export
;
3525 GLboolean ARB_shader_texture_lod
;
3526 GLboolean ARB_shading_language_packing
;
3527 GLboolean ARB_shading_language_420pack
;
3528 GLboolean ARB_shadow
;
3530 GLboolean ARB_texture_border_clamp
;
3531 GLboolean ARB_texture_buffer_object
;
3532 GLboolean ARB_texture_buffer_object_rgb32
;
3533 GLboolean ARB_texture_buffer_range
;
3534 GLboolean ARB_texture_compression_rgtc
;
3535 GLboolean ARB_texture_cube_map
;
3536 GLboolean ARB_texture_cube_map_array
;
3537 GLboolean ARB_texture_env_combine
;
3538 GLboolean ARB_texture_env_crossbar
;
3539 GLboolean ARB_texture_env_dot3
;
3540 GLboolean ARB_texture_float
;
3541 GLboolean ARB_texture_gather
;
3542 GLboolean ARB_texture_mirror_clamp_to_edge
;
3543 GLboolean ARB_texture_multisample
;
3544 GLboolean ARB_texture_non_power_of_two
;
3545 GLboolean ARB_texture_query_levels
;
3546 GLboolean ARB_texture_query_lod
;
3547 GLboolean ARB_texture_rg
;
3548 GLboolean ARB_texture_rgb10_a2ui
;
3549 GLboolean ARB_texture_view
;
3550 GLboolean ARB_timer_query
;
3551 GLboolean ARB_transform_feedback2
;
3552 GLboolean ARB_transform_feedback3
;
3553 GLboolean ARB_transform_feedback_instanced
;
3554 GLboolean ARB_uniform_buffer_object
;
3555 GLboolean ARB_vertex_program
;
3556 GLboolean ARB_vertex_shader
;
3557 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3558 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3559 GLboolean ARB_viewport_array
;
3560 GLboolean EXT_blend_color
;
3561 GLboolean EXT_blend_equation_separate
;
3562 GLboolean EXT_blend_func_separate
;
3563 GLboolean EXT_blend_minmax
;
3564 GLboolean EXT_depth_bounds_test
;
3565 GLboolean EXT_draw_buffers2
;
3566 GLboolean EXT_framebuffer_multisample
;
3567 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3568 GLboolean EXT_framebuffer_sRGB
;
3569 GLboolean EXT_gpu_program_parameters
;
3570 GLboolean EXT_gpu_shader4
;
3571 GLboolean EXT_packed_float
;
3572 GLboolean EXT_pixel_buffer_object
;
3573 GLboolean EXT_point_parameters
;
3574 GLboolean EXT_provoking_vertex
;
3575 GLboolean EXT_separate_shader_objects
;
3576 GLboolean EXT_shader_integer_mix
;
3577 GLboolean EXT_stencil_two_side
;
3578 GLboolean EXT_texture3D
;
3579 GLboolean EXT_texture_array
;
3580 GLboolean EXT_texture_compression_latc
;
3581 GLboolean EXT_texture_compression_s3tc
;
3582 GLboolean EXT_texture_env_dot3
;
3583 GLboolean EXT_texture_filter_anisotropic
;
3584 GLboolean EXT_texture_integer
;
3585 GLboolean EXT_texture_mirror_clamp
;
3586 GLboolean EXT_texture_shared_exponent
;
3587 GLboolean EXT_texture_snorm
;
3588 GLboolean EXT_texture_sRGB
;
3589 GLboolean EXT_texture_sRGB_decode
;
3590 GLboolean EXT_texture_swizzle
;
3591 GLboolean EXT_transform_feedback
;
3592 GLboolean EXT_timer_query
;
3593 GLboolean EXT_vertex_array_bgra
;
3594 GLboolean OES_standard_derivatives
;
3595 /* vendor extensions */
3596 GLboolean AMD_performance_monitor
;
3597 GLboolean AMD_seamless_cubemap_per_texture
;
3598 GLboolean AMD_vertex_shader_layer
;
3599 GLboolean APPLE_object_purgeable
;
3600 GLboolean ATI_envmap_bumpmap
;
3601 GLboolean ATI_texture_compression_3dc
;
3602 GLboolean ATI_texture_mirror_once
;
3603 GLboolean ATI_texture_env_combine3
;
3604 GLboolean ATI_fragment_shader
;
3605 GLboolean ATI_separate_stencil
;
3606 GLboolean MESA_pack_invert
;
3607 GLboolean MESA_ycbcr_texture
;
3608 GLboolean NV_conditional_render
;
3609 GLboolean NV_fog_distance
;
3610 GLboolean NV_fragment_program_option
;
3611 GLboolean NV_point_sprite
;
3612 GLboolean NV_primitive_restart
;
3613 GLboolean NV_texture_barrier
;
3614 GLboolean NV_texture_env_combine4
;
3615 GLboolean NV_texture_rectangle
;
3616 GLboolean NV_vdpau_interop
;
3617 GLboolean TDFX_texture_compression_FXT1
;
3618 GLboolean OES_EGL_image
;
3619 GLboolean OES_draw_texture
;
3620 GLboolean OES_depth_texture_cube_map
;
3621 GLboolean OES_EGL_image_external
;
3622 GLboolean OES_compressed_ETC1_RGB8_texture
;
3623 GLboolean extension_sentinel
;
3624 /** The extension string */
3625 const GLubyte
*String
;
3626 /** Number of supported extensions */
3632 * A stack of matrices (projection, modelview, color, texture, etc).
3634 struct gl_matrix_stack
3636 GLmatrix
*Top
; /**< points into Stack */
3637 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3638 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3639 GLuint MaxDepth
; /**< size of Stack[] array */
3640 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3645 * \name Bits for image transfer operations
3646 * \sa __struct gl_contextRec::ImageTransferState.
3649 #define IMAGE_SCALE_BIAS_BIT 0x1
3650 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3651 #define IMAGE_MAP_COLOR_BIT 0x4
3652 #define IMAGE_CLAMP_BIT 0x800
3655 /** Pixel Transfer ops */
3656 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3657 IMAGE_SHIFT_OFFSET_BIT | \
3658 IMAGE_MAP_COLOR_BIT)
3661 * \name Bits to indicate what state has changed.
3664 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3665 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3666 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3667 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3668 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3669 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3670 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3671 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3672 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3673 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3674 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3675 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3676 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3677 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3678 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3679 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3680 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3681 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3682 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3683 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3684 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3685 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3686 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3687 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3688 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3689 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3690 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3691 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3692 #define _NEW_BUFFER_OBJECT (1 << 28)
3693 #define _NEW_FRAG_CLAMP (1 << 29)
3694 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3695 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3701 * Composite state flags
3704 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3710 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3720 /* This has to be included here. */
3725 * Display list flags.
3726 * Strictly this is a tnl-private concept, but it doesn't seem
3727 * worthwhile adding a tnl private structure just to hold this one bit
3730 #define DLIST_DANGLING_REFS 0x1
3733 /** Opaque declaration of display list payload data type */
3734 union gl_dlist_node
;
3738 * Provide a location where information about a display list can be
3739 * collected. Could be extended with driverPrivate structures,
3740 * etc. in the future.
3742 struct gl_display_list
3745 GLchar
*Label
; /**< GL_KHR_debug */
3746 GLbitfield Flags
; /**< DLIST_x flags */
3747 /** The dlist commands are in a linked list of nodes */
3748 union gl_dlist_node
*Head
;
3753 * State used during display list compilation and execution.
3755 struct gl_dlist_state
3757 GLuint CallDepth
; /**< Current recursion calling depth */
3759 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3760 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3761 GLuint CurrentPos
; /**< Index into current block of nodes */
3763 GLvertexformat ListVtxfmt
;
3765 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3766 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3768 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3769 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3772 /* State known to have been set by the currently-compiling display
3773 * list. Used to eliminate some redundant state changes.
3781 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3782 * to small enums suitable for use as an array index.
3785 enum mesa_debug_source
{
3786 MESA_DEBUG_SOURCE_API
,
3787 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3788 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3789 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3790 MESA_DEBUG_SOURCE_APPLICATION
,
3791 MESA_DEBUG_SOURCE_OTHER
,
3792 MESA_DEBUG_SOURCE_COUNT
3795 enum mesa_debug_type
{
3796 MESA_DEBUG_TYPE_ERROR
,
3797 MESA_DEBUG_TYPE_DEPRECATED
,
3798 MESA_DEBUG_TYPE_UNDEFINED
,
3799 MESA_DEBUG_TYPE_PORTABILITY
,
3800 MESA_DEBUG_TYPE_PERFORMANCE
,
3801 MESA_DEBUG_TYPE_OTHER
,
3802 MESA_DEBUG_TYPE_MARKER
,
3803 MESA_DEBUG_TYPE_PUSH_GROUP
,
3804 MESA_DEBUG_TYPE_POP_GROUP
,
3805 MESA_DEBUG_TYPE_COUNT
3808 enum mesa_debug_severity
{
3809 MESA_DEBUG_SEVERITY_LOW
,
3810 MESA_DEBUG_SEVERITY_MEDIUM
,
3811 MESA_DEBUG_SEVERITY_HIGH
,
3812 MESA_DEBUG_SEVERITY_NOTIFICATION
,
3813 MESA_DEBUG_SEVERITY_COUNT
3819 * An error, warning, or other piece of debug information for an application
3820 * to consume via GL_ARB_debug_output/GL_KHR_debug.
3824 enum mesa_debug_source source
;
3825 enum mesa_debug_type type
;
3827 enum mesa_debug_severity severity
;
3832 struct gl_debug_namespace
3834 struct _mesa_HashTable
*IDs
;
3835 unsigned ZeroID
; /* a HashTable won't take zero, so store its state here */
3836 /** lists of IDs in the hash table at each severity */
3837 struct simple_node Severity
[MESA_DEBUG_SEVERITY_COUNT
];
3840 struct gl_debug_state
3842 GLDEBUGPROC Callback
;
3843 const void *CallbackData
;
3844 GLboolean SyncOutput
;
3845 GLboolean DebugOutput
;
3846 GLboolean ARBCallback
; /* Used to track if current callback is of type ARB_debug_output or KHR_debug */
3847 GLboolean Defaults
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SEVERITY_COUNT
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3848 struct gl_debug_namespace Namespaces
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3849 struct gl_debug_msg Log
[MAX_DEBUG_LOGGED_MESSAGES
];
3850 struct gl_debug_msg DebugGroupMsgs
[MAX_DEBUG_GROUP_STACK_DEPTH
];
3851 GLint GroupStackDepth
;
3854 GLint NextMsgLength
; /* redundant, but copied here from Log[NextMsg].length
3855 for the sake of the offsetof() code in get.c */
3859 * Enum for the OpenGL APIs we know about and may support.
3861 * NOTE: This must match the api_enum table in
3862 * src/mesa/main/get_hash_generator.py
3866 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
3870 API_OPENGL_LAST
= API_OPENGL_CORE
3874 * Driver-specific state flags.
3876 * These are or'd with gl_context::NewDriverState to notify a driver about
3877 * a state change. The driver sets the flags at context creation and
3878 * the meaning of the bits set is opaque to core Mesa.
3880 struct gl_driver_flags
3882 /** gl_context::Array::_DrawArrays (vertex array state) */
3883 GLbitfield NewArray
;
3885 /** gl_context::TransformFeedback::CurrentObject */
3886 GLbitfield NewTransformFeedback
;
3888 /** gl_context::TransformFeedback::CurrentObject::shader_program */
3889 GLbitfield NewTransformFeedbackProg
;
3891 /** gl_context::RasterDiscard */
3892 GLbitfield NewRasterizerDiscard
;
3895 * gl_context::UniformBufferBindings
3896 * gl_shader_program::UniformBlocks
3898 GLbitfield NewUniformBuffer
;
3901 * gl_context::AtomicBufferBindings
3903 GLbitfield NewAtomicBuffer
;
3906 * gl_context::ImageUnits
3908 GLbitfield NewImageUnits
;
3911 struct gl_uniform_buffer_binding
3913 struct gl_buffer_object
*BufferObject
;
3914 /** Start of uniform block data in the buffer */
3916 /** Size of data allowed to be referenced from the buffer (in bytes) */
3919 * glBindBufferBase() indicates that the Size should be ignored and only
3920 * limited by the current size of the BufferObject.
3922 GLboolean AutomaticSize
;
3926 * ARB_shader_image_load_store image unit.
3928 struct gl_image_unit
3931 * Texture object bound to this unit.
3933 struct gl_texture_object
*TexObj
;
3936 * Level of the texture object bound to this unit.
3941 * \c GL_TRUE if the whole level is bound as an array of layers, \c
3942 * GL_FALSE if only some specific layer of the texture is bound.
3948 * Layer of the texture object bound to this unit, or zero if the
3949 * whole level is bound.
3954 * Access allowed to this texture image. Either \c GL_READ_ONLY,
3955 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
3960 * GL internal format that determines the interpretation of the
3961 * image memory when shader image operations are performed through
3967 * Mesa format corresponding to \c Format.
3969 mesa_format _ActualFormat
;
3972 * GL_TRUE if the state of this image unit is valid and access from
3973 * the shader is allowed. Otherwise loads from this unit should
3974 * return zero and stores should have no effect.
3980 * Binding point for an atomic counter buffer object.
3982 struct gl_atomic_buffer_binding
3984 struct gl_buffer_object
*BufferObject
;
3990 * Mesa rendering context.
3992 * This is the central context data structure for Mesa. Almost all
3993 * OpenGL state is contained in this structure.
3994 * Think of this as a base class from which device drivers will derive
3999 /** State possibly shared with other contexts in the address space */
4000 struct gl_shared_state
*Shared
;
4002 /** \name API function pointer tables */
4006 * The current dispatch table for non-displaylist-saving execution, either
4007 * BeginEnd or OutsideBeginEnd
4009 struct _glapi_table
*Exec
;
4011 * The normal dispatch table for non-displaylist-saving, non-begin/end
4013 struct _glapi_table
*OutsideBeginEnd
;
4014 /** The dispatch table used between glNewList() and glEndList() */
4015 struct _glapi_table
*Save
;
4017 * The dispatch table used between glBegin() and glEnd() (outside of a
4018 * display list). Only valid functions between those two are set, which is
4019 * mostly just the set in a GLvertexformat struct.
4021 struct _glapi_table
*BeginEnd
;
4023 * Tracks the current dispatch table out of the 3 above, so that it can be
4024 * re-set on glXMakeCurrent().
4026 struct _glapi_table
*CurrentDispatch
;
4029 struct gl_config Visual
;
4030 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4031 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4032 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4033 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4036 * Device driver function pointer table
4038 struct dd_function_table Driver
;
4040 /** Core/Driver constants */
4041 struct gl_constants Const
;
4043 /** \name The various 4x4 matrix stacks */
4045 struct gl_matrix_stack ModelviewMatrixStack
;
4046 struct gl_matrix_stack ProjectionMatrixStack
;
4047 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4048 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4049 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4052 /** Combined modelview and projection matrix */
4053 GLmatrix _ModelProjectMatrix
;
4055 /** \name Display lists */
4056 struct gl_dlist_state ListState
;
4058 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4059 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4061 /** Extension information */
4062 struct gl_extensions Extensions
;
4064 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4066 char *VersionString
;
4068 /** \name State attribute stack (for glPush/PopAttrib) */
4070 GLuint AttribStackDepth
;
4071 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4074 /** \name Renderer attribute groups
4076 * We define a struct for each attribute group to make pushing and popping
4077 * attributes easy. Also it's a good organization.
4080 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4081 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4082 struct gl_current_attrib Current
; /**< Current attributes */
4083 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4084 struct gl_eval_attrib Eval
; /**< Eval attributes */
4085 struct gl_fog_attrib Fog
; /**< Fog attributes */
4086 struct gl_hint_attrib Hint
; /**< Hint attributes */
4087 struct gl_light_attrib Light
; /**< Light attributes */
4088 struct gl_line_attrib Line
; /**< Line attributes */
4089 struct gl_list_attrib List
; /**< List attributes */
4090 struct gl_multisample_attrib Multisample
;
4091 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4092 struct gl_point_attrib Point
; /**< Point attributes */
4093 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4094 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4095 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4096 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4097 struct gl_texture_attrib Texture
; /**< Texture attributes */
4098 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4099 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4102 /** \name Client attribute stack */
4104 GLuint ClientAttribStackDepth
;
4105 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4108 /** \name Client attribute groups */
4110 struct gl_array_attrib Array
; /**< Vertex arrays */
4111 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4112 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4113 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4116 /** \name Other assorted state (not pushed/popped on attribute stack) */
4118 struct gl_pixelmaps PixelMaps
;
4120 struct gl_evaluators EvalMap
; /**< All evaluators */
4121 struct gl_feedback Feedback
; /**< Feedback */
4122 struct gl_selection Select
; /**< Selection */
4124 struct gl_program_state Program
; /**< general program state */
4125 struct gl_vertex_program_state VertexProgram
;
4126 struct gl_fragment_program_state FragmentProgram
;
4127 struct gl_geometry_program_state GeometryProgram
;
4128 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4130 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4131 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4132 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
4134 struct gl_query_state Query
; /**< occlusion, timer queries */
4136 struct gl_transform_feedback_state TransformFeedback
;
4138 struct gl_perf_monitor_state PerfMonitor
;
4140 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4142 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4143 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4146 * Current GL_ARB_uniform_buffer_object binding referenced by
4147 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4149 struct gl_buffer_object
*UniformBuffer
;
4152 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4153 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4154 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4157 struct gl_uniform_buffer_binding
4158 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4161 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4164 struct gl_buffer_object
*AtomicBuffer
;
4167 * Array of atomic counter buffer binding points.
4169 struct gl_atomic_buffer_binding
4170 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4173 * Array of image units for ARB_shader_image_load_store.
4175 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4179 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4181 /* GL_EXT_framebuffer_object */
4182 struct gl_renderbuffer
*CurrentRenderbuffer
;
4184 GLenum ErrorValue
; /**< Last error code */
4187 * Recognize and silence repeated error debug messages in buggy apps.
4189 const char *ErrorDebugFmtString
;
4190 GLuint ErrorDebugCount
;
4192 /* GL_ARB_debug_output/GL_KHR_debug */
4193 struct gl_debug_state
*Debug
;
4195 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4196 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4197 GLbitfield NewDriverState
;/**< bitwise-or of flags from DriverFlags */
4199 struct gl_driver_flags DriverFlags
;
4201 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4203 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4205 /** \name Derived state */
4206 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4207 GLfloat _EyeZDir
[3];
4208 GLfloat _ModelViewInvScale
;
4209 GLboolean _NeedEyeCoords
;
4210 GLboolean _ForceEyeCoords
;
4212 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4214 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4216 /** \name For debugging/development only */
4218 GLboolean FirstTimeCurrent
;
4221 /** software compression/decompression supported or not */
4222 GLboolean Mesa_DXTn
;
4224 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4226 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4229 * \name Hooks for module contexts.
4231 * These will eventually live in the driver or elsewhere.
4234 void *swrast_context
;
4235 void *swsetup_context
;
4236 void *swtnl_context
;
4237 struct vbo_context
*vbo_context
;
4238 struct st_context
*st
;
4243 * \name NV_vdpau_interop
4246 const void *vdpDevice
;
4247 const void *vdpGetProcAddress
;
4248 struct set
*vdpSurfaces
;
4252 * Has this context observed a GPU reset in any context in the share group?
4254 * Once this field becomes true, it is never reset to false.
4256 GLboolean ShareGroupReset
;
4261 extern int MESA_VERBOSE
;
4262 extern int MESA_DEBUG_FLAGS
;
4263 # define MESA_FUNCTION __FUNCTION__
4265 # define MESA_VERBOSE 0
4266 # define MESA_DEBUG_FLAGS 0
4267 # define MESA_FUNCTION "a function"
4274 /** The MESA_VERBOSE var is a bitmask of these flags */
4277 VERBOSE_VARRAY
= 0x0001,
4278 VERBOSE_TEXTURE
= 0x0002,
4279 VERBOSE_MATERIAL
= 0x0004,
4280 VERBOSE_PIPELINE
= 0x0008,
4281 VERBOSE_DRIVER
= 0x0010,
4282 VERBOSE_STATE
= 0x0020,
4283 VERBOSE_API
= 0x0040,
4284 VERBOSE_DISPLAY_LIST
= 0x0100,
4285 VERBOSE_LIGHTING
= 0x0200,
4286 VERBOSE_PRIMS
= 0x0400,
4287 VERBOSE_VERTS
= 0x0800,
4288 VERBOSE_DISASSEM
= 0x1000,
4289 VERBOSE_DRAW
= 0x2000,
4290 VERBOSE_SWAPBUFFERS
= 0x4000
4294 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4297 DEBUG_SILENT
= (1 << 0),
4298 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4299 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4300 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4309 #endif /* MTYPES_H */