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 */
39 #include "c11/threads.h"
41 #include "main/glheader.h"
42 #include "main/config.h"
43 #include "glapi/glapi.h"
44 #include "math/m_matrix.h" /* GLmatrix */
45 #include "glsl/shader_enums.h"
46 #include "main/formats.h" /* MESA_FORMAT_COUNT */
55 * \name 64-bit extension of GLbitfield.
58 typedef GLuint64 GLbitfield64
;
60 /** Set a single bit */
61 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
62 /** Set all bits up to excluding bit b */
63 #define BITFIELD64_MASK(b) \
64 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
65 /** Set count bits starting from bit b */
66 #define BITFIELD64_RANGE(b, count) \
67 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
71 * \name Some forward type declarations
74 struct _mesa_HashTable
;
75 struct gl_attrib_node
;
76 struct gl_list_extensions
;
78 struct gl_program_cache
;
79 struct gl_texture_object
;
80 struct gl_debug_state
;
83 struct gl_uniform_storage
;
84 struct prog_instruction
;
85 struct gl_program_parameter_list
;
92 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
93 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
94 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
95 #define PRIM_UNKNOWN (PRIM_MAX + 2)
100 * Indexes for vertex program attributes.
101 * GL_NV_vertex_program aliases generic attributes over the conventional
102 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
103 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
104 * generic attributes are distinct/separate).
109 VERT_ATTRIB_WEIGHT
= 1,
110 VERT_ATTRIB_NORMAL
= 2,
111 VERT_ATTRIB_COLOR0
= 3,
112 VERT_ATTRIB_COLOR1
= 4,
114 VERT_ATTRIB_COLOR_INDEX
= 6,
115 VERT_ATTRIB_EDGEFLAG
= 7,
116 VERT_ATTRIB_TEX0
= 8,
117 VERT_ATTRIB_TEX1
= 9,
118 VERT_ATTRIB_TEX2
= 10,
119 VERT_ATTRIB_TEX3
= 11,
120 VERT_ATTRIB_TEX4
= 12,
121 VERT_ATTRIB_TEX5
= 13,
122 VERT_ATTRIB_TEX6
= 14,
123 VERT_ATTRIB_TEX7
= 15,
124 VERT_ATTRIB_POINT_SIZE
= 16,
125 VERT_ATTRIB_GENERIC0
= 17,
126 VERT_ATTRIB_GENERIC1
= 18,
127 VERT_ATTRIB_GENERIC2
= 19,
128 VERT_ATTRIB_GENERIC3
= 20,
129 VERT_ATTRIB_GENERIC4
= 21,
130 VERT_ATTRIB_GENERIC5
= 22,
131 VERT_ATTRIB_GENERIC6
= 23,
132 VERT_ATTRIB_GENERIC7
= 24,
133 VERT_ATTRIB_GENERIC8
= 25,
134 VERT_ATTRIB_GENERIC9
= 26,
135 VERT_ATTRIB_GENERIC10
= 27,
136 VERT_ATTRIB_GENERIC11
= 28,
137 VERT_ATTRIB_GENERIC12
= 29,
138 VERT_ATTRIB_GENERIC13
= 30,
139 VERT_ATTRIB_GENERIC14
= 31,
140 VERT_ATTRIB_GENERIC15
= 32,
145 * Symbolic constats to help iterating over
146 * specific blocks of vertex attributes.
149 * includes all fixed function attributes as well as
150 * the aliased GL_NV_vertex_program shader attributes.
152 * include the classic texture coordinate attributes.
153 * Is a subset of VERT_ATTRIB_FF.
154 * VERT_ATTRIB_GENERIC
155 * include the OpenGL 2.0+ GLSL generic shader attributes.
156 * These alias the generic GL_ARB_vertex_shader attributes.
158 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
159 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
161 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
162 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
164 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
165 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
168 * Bitflags for vertex attributes.
169 * These are used in bitfields in many places.
172 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
173 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
174 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
175 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
176 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
177 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
178 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
179 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
180 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
181 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
182 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
183 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
184 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
185 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
186 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
187 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
188 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
189 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
191 #define VERT_BIT(i) BITFIELD64_BIT(i)
192 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
194 #define VERT_BIT_FF(i) VERT_BIT(i)
195 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
196 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
197 #define VERT_BIT_TEX_ALL \
198 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
200 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
201 #define VERT_BIT_GENERIC_ALL \
202 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
207 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
208 * fragment shader inputs.
210 * Note that some of these values are not available to all pipeline stages.
212 * When this enum is updated, the following code must be updated too:
213 * - vertResults (in prog_print.c's arb_output_attrib_string())
214 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
215 * - _mesa_varying_slot_in_fs()
220 VARYING_SLOT_COL0
, /* COL0 and COL1 must be contiguous */
223 VARYING_SLOT_TEX0
, /* TEX0-TEX7 must be contiguous */
231 VARYING_SLOT_PSIZ
, /* Does not appear in FS */
232 VARYING_SLOT_BFC0
, /* Does not appear in FS */
233 VARYING_SLOT_BFC1
, /* Does not appear in FS */
234 VARYING_SLOT_EDGE
, /* Does not appear in FS */
235 VARYING_SLOT_CLIP_VERTEX
, /* Does not appear in FS */
236 VARYING_SLOT_CLIP_DIST0
,
237 VARYING_SLOT_CLIP_DIST1
,
238 VARYING_SLOT_PRIMITIVE_ID
, /* Does not appear in VS */
239 VARYING_SLOT_LAYER
, /* Appears as VS or GS output */
240 VARYING_SLOT_VIEWPORT
, /* Appears as VS or GS output */
241 VARYING_SLOT_FACE
, /* FS only */
242 VARYING_SLOT_PNTC
, /* FS only */
243 VARYING_SLOT_VAR0
, /* First generic varying slot */
244 VARYING_SLOT_MAX
= VARYING_SLOT_VAR0
+ MAX_VARYING
249 * Bitflags for varying slots.
252 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
253 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
254 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
255 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
256 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
257 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
258 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
259 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
260 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
261 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
262 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
263 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
264 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
265 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
266 MAX_TEXTURE_COORD_UNITS)
267 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
268 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
269 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
270 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
271 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
272 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
273 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
274 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
275 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
276 #define VARYING_BIT_VIEWPORT BITFIELD64_BIT(VARYING_SLOT_VIEWPORT)
277 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
278 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
279 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
283 * Determine if the given gl_varying_slot appears in the fragment shader.
285 static inline GLboolean
286 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
289 case VARYING_SLOT_PSIZ
:
290 case VARYING_SLOT_BFC0
:
291 case VARYING_SLOT_BFC1
:
292 case VARYING_SLOT_EDGE
:
293 case VARYING_SLOT_CLIP_VERTEX
:
294 case VARYING_SLOT_LAYER
:
303 * Fragment program results
307 FRAG_RESULT_DEPTH
= 0,
308 FRAG_RESULT_STENCIL
= 1,
309 /* If a single color should be written to all render targets, this
310 * register is written. No FRAG_RESULT_DATAn will be written.
312 FRAG_RESULT_COLOR
= 2,
313 FRAG_RESULT_SAMPLE_MASK
= 3,
315 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
316 * or ARB_fragment_program fragment.color[n]) color results. If
317 * any are written, FRAG_RESULT_COLOR will not be written.
319 FRAG_RESULT_DATA0
= 4,
320 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
325 * Indexes for all renderbuffers
329 /* the four standard color buffers */
337 /* optional aux buffer */
339 /* generic renderbuffers */
352 * Bit flags for all renderbuffers
354 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
355 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
356 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
357 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
358 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
359 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
360 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
361 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
362 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
363 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
364 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
365 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
366 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
367 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
368 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
369 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
370 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
371 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
372 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
375 * Mask of all the color buffer bits (but not accum).
377 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
378 BUFFER_BIT_BACK_LEFT | \
379 BUFFER_BIT_FRONT_RIGHT | \
380 BUFFER_BIT_BACK_RIGHT | \
382 BUFFER_BIT_COLOR0 | \
383 BUFFER_BIT_COLOR1 | \
384 BUFFER_BIT_COLOR2 | \
385 BUFFER_BIT_COLOR3 | \
386 BUFFER_BIT_COLOR4 | \
387 BUFFER_BIT_COLOR5 | \
388 BUFFER_BIT_COLOR6 | \
392 * Framebuffer configuration (aka visual / pixelformat)
393 * Note: some of these fields should be boolean, but it appears that
394 * code in drivers/dri/common/util.c requires int-sized fields.
400 GLuint doubleBufferMode
;
403 GLboolean haveAccumBuffer
;
404 GLboolean haveDepthBuffer
;
405 GLboolean haveStencilBuffer
;
407 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
408 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
409 GLint rgbBits
; /* total bits for rgb */
410 GLint indexBits
; /* total bits for colorindex */
412 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
420 /* EXT_visual_rating / GLX 1.2 */
423 /* EXT_visual_info / GLX 1.2 */
424 GLint transparentPixel
;
425 /* colors are floats scaled to ints */
426 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
427 GLint transparentIndex
;
429 /* ARB_multisample / SGIS_multisample */
433 /* SGIX_pbuffer / GLX 1.3 */
434 GLint maxPbufferWidth
;
435 GLint maxPbufferHeight
;
436 GLint maxPbufferPixels
;
437 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
438 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
440 /* OML_swap_method */
443 /* EXT_texture_from_pixmap */
444 GLint bindToTextureRgb
;
445 GLint bindToTextureRgba
;
446 GLint bindToMipmapTexture
;
447 GLint bindToTextureTargets
;
450 /* EXT_framebuffer_sRGB */
456 * \name Bit flags used for updating material values.
459 #define MAT_ATTRIB_FRONT_AMBIENT 0
460 #define MAT_ATTRIB_BACK_AMBIENT 1
461 #define MAT_ATTRIB_FRONT_DIFFUSE 2
462 #define MAT_ATTRIB_BACK_DIFFUSE 3
463 #define MAT_ATTRIB_FRONT_SPECULAR 4
464 #define MAT_ATTRIB_BACK_SPECULAR 5
465 #define MAT_ATTRIB_FRONT_EMISSION 6
466 #define MAT_ATTRIB_BACK_EMISSION 7
467 #define MAT_ATTRIB_FRONT_SHININESS 8
468 #define MAT_ATTRIB_BACK_SHININESS 9
469 #define MAT_ATTRIB_FRONT_INDEXES 10
470 #define MAT_ATTRIB_BACK_INDEXES 11
471 #define MAT_ATTRIB_MAX 12
473 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
474 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
475 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
476 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
477 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
478 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
480 #define MAT_INDEX_AMBIENT 0
481 #define MAT_INDEX_DIFFUSE 1
482 #define MAT_INDEX_SPECULAR 2
484 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
485 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
486 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
487 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
488 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
489 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
490 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
491 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
492 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
493 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
494 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
495 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
498 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
499 MAT_BIT_FRONT_AMBIENT | \
500 MAT_BIT_FRONT_DIFFUSE | \
501 MAT_BIT_FRONT_SPECULAR | \
502 MAT_BIT_FRONT_SHININESS | \
503 MAT_BIT_FRONT_INDEXES)
505 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
506 MAT_BIT_BACK_AMBIENT | \
507 MAT_BIT_BACK_DIFFUSE | \
508 MAT_BIT_BACK_SPECULAR | \
509 MAT_BIT_BACK_SHININESS | \
510 MAT_BIT_BACK_INDEXES)
512 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
521 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
529 #define LIGHT_SPOT 0x1
530 #define LIGHT_LOCAL_VIEWER 0x2
531 #define LIGHT_POSITIONAL 0x4
532 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
537 * Light source state.
541 struct gl_light
*next
; /**< double linked list with sentinel */
542 struct gl_light
*prev
;
544 GLfloat Ambient
[4]; /**< ambient color */
545 GLfloat Diffuse
[4]; /**< diffuse color */
546 GLfloat Specular
[4]; /**< specular color */
547 GLfloat EyePosition
[4]; /**< position in eye coordinates */
548 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
549 GLfloat SpotExponent
;
550 GLfloat SpotCutoff
; /**< in degrees */
551 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
552 GLfloat ConstantAttenuation
;
553 GLfloat LinearAttenuation
;
554 GLfloat QuadraticAttenuation
;
555 GLboolean Enabled
; /**< On/off flag */
558 * \name Derived fields
561 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
563 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
564 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
565 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
566 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
567 GLfloat _VP_inf_spot_attenuation
;
569 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
570 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
571 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
581 GLfloat Ambient
[4]; /**< ambient color */
582 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
583 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
584 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
585 * or GL_SEPARATE_SPECULAR_COLOR */
590 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
592 struct gl_accum_attrib
594 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
599 * Used for storing clear color, texture border color, etc.
600 * The float values are typically unclamped.
611 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
613 struct gl_colorbuffer_attrib
615 GLuint ClearIndex
; /**< Index for glClear */
616 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
617 GLuint IndexMask
; /**< Color index write mask */
618 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
620 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
623 * \name alpha testing
626 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
627 GLenum AlphaFunc
; /**< Alpha test function */
628 GLfloat AlphaRefUnclamped
;
629 GLclampf AlphaRef
; /**< Alpha reference value */
636 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
638 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
639 * control, only on the fixed-pointness of the render target.
640 * The query does however depend on fragment color clamping.
642 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
643 GLfloat BlendColor
[4]; /**< Blending color */
647 GLenum SrcRGB
; /**< RGB blend source term */
648 GLenum DstRGB
; /**< RGB blend dest term */
649 GLenum SrcA
; /**< Alpha blend source term */
650 GLenum DstA
; /**< Alpha blend dest term */
651 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
652 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
654 * Set if any blend factor uses SRC1. Computed at the time blend factors
657 GLboolean _UsesDualSrc
;
658 } Blend
[MAX_DRAW_BUFFERS
];
659 /** Are the blend func terms currently different for each buffer/target? */
660 GLboolean _BlendFuncPerBuffer
;
661 /** Are the blend equations currently different for each buffer/target? */
662 GLboolean _BlendEquationPerBuffer
;
669 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
670 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
671 GLenum LogicOp
; /**< Logic operator */
675 GLboolean DitherFlag
; /**< Dither enable flag */
677 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
678 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
679 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
681 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
686 * Current attribute group (GL_CURRENT_BIT).
688 struct gl_current_attrib
691 * \name Current vertex attributes.
692 * \note Values are valid only after FLUSH_VERTICES has been called.
693 * \note Index and Edgeflag current values are stored as floats in the
694 * SIX and SEVEN attribute slots.
696 /* we need double storage for this for vertex attrib 64bit */
697 GLfloat Attrib
[VERT_ATTRIB_MAX
][4*2]; /**< Position, color, texcoords, etc */
700 * \name Current raster position attributes (always valid).
701 * \note This set of attributes is very similar to the SWvertex struct.
704 GLfloat RasterPos
[4];
705 GLfloat RasterDistance
;
706 GLfloat RasterColor
[4];
707 GLfloat RasterSecondaryColor
[4];
708 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
709 GLboolean RasterPosValid
;
715 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
717 struct gl_depthbuffer_attrib
719 GLenum Func
; /**< Function for depth buffer compare */
720 GLclampd Clear
; /**< Value to clear depth buffer to */
721 GLboolean Test
; /**< Depth buffering enabled flag */
722 GLboolean Mask
; /**< Depth buffer writable? */
723 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
724 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
729 * Evaluator attribute group (GL_EVAL_BIT).
731 struct gl_eval_attrib
737 GLboolean Map1Color4
;
739 GLboolean Map1Normal
;
740 GLboolean Map1TextureCoord1
;
741 GLboolean Map1TextureCoord2
;
742 GLboolean Map1TextureCoord3
;
743 GLboolean Map1TextureCoord4
;
744 GLboolean Map1Vertex3
;
745 GLboolean Map1Vertex4
;
746 GLboolean Map2Color4
;
748 GLboolean Map2Normal
;
749 GLboolean Map2TextureCoord1
;
750 GLboolean Map2TextureCoord2
;
751 GLboolean Map2TextureCoord3
;
752 GLboolean Map2TextureCoord4
;
753 GLboolean Map2Vertex3
;
754 GLboolean Map2Vertex4
;
755 GLboolean AutoNormal
;
759 * \name Map Grid endpoints and divisions and calculated du values
763 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
764 GLint MapGrid2un
, MapGrid2vn
;
765 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
766 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
772 * Fog attribute group (GL_FOG_BIT).
776 GLboolean Enabled
; /**< Fog enabled flag */
777 GLboolean ColorSumEnabled
;
778 GLfloat ColorUnclamped
[4]; /**< Fog color */
779 GLfloat Color
[4]; /**< Fog color */
780 GLfloat Density
; /**< Density >= 0.0 */
781 GLfloat Start
; /**< Start distance in eye coords */
782 GLfloat End
; /**< End distance in eye coords */
783 GLfloat Index
; /**< Fog index */
784 GLenum Mode
; /**< Fog mode */
785 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
786 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
787 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
792 * Hint attribute group (GL_HINT_BIT).
794 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
796 struct gl_hint_attrib
798 GLenum PerspectiveCorrection
;
801 GLenum PolygonSmooth
;
803 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
804 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
805 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
810 * Lighting attribute group (GL_LIGHT_BIT).
812 struct gl_light_attrib
814 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
815 struct gl_lightmodel Model
; /**< Lighting model */
818 * Front and back material values.
819 * Note: must call FLUSH_VERTICES() before using.
821 struct gl_material Material
;
823 GLboolean Enabled
; /**< Lighting enabled flag */
824 GLboolean ColorMaterialEnabled
;
826 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
827 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
828 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
829 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
830 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
833 GLboolean _ClampVertexColor
;
834 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
837 * Derived state for optimizations:
840 GLboolean _NeedEyeCoords
;
841 GLboolean _NeedVertices
; /**< Use fast shader? */
842 struct gl_light EnabledList
; /**< List sentinel */
844 GLfloat _BaseColor
[2][3];
850 * Line attribute group (GL_LINE_BIT).
852 struct gl_line_attrib
854 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
855 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
856 GLushort StipplePattern
; /**< Stipple pattern */
857 GLint StippleFactor
; /**< Stipple repeat factor */
858 GLfloat Width
; /**< Line width */
863 * Display list attribute group (GL_LIST_BIT).
865 struct gl_list_attrib
872 * Multisample attribute group (GL_MULTISAMPLE_BIT).
874 struct gl_multisample_attrib
877 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
878 GLboolean SampleAlphaToCoverage
;
879 GLboolean SampleAlphaToOne
;
880 GLboolean SampleCoverage
;
881 GLboolean SampleCoverageInvert
;
882 GLboolean SampleShading
;
884 /* ARB_texture_multisample / GL3.2 additions */
885 GLboolean SampleMask
;
887 GLfloat SampleCoverageValue
;
888 GLfloat MinSampleShadingValue
;
890 /** The GL spec defines this as an array but >32x MSAA is madness */
891 GLbitfield SampleMaskValue
;
896 * A pixelmap (see glPixelMap)
901 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
906 * Collection of all pixelmaps
910 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
911 struct gl_pixelmap GtoG
;
912 struct gl_pixelmap BtoB
;
913 struct gl_pixelmap AtoA
;
914 struct gl_pixelmap ItoR
;
915 struct gl_pixelmap ItoG
;
916 struct gl_pixelmap ItoB
;
917 struct gl_pixelmap ItoA
;
918 struct gl_pixelmap ItoI
;
919 struct gl_pixelmap StoS
;
924 * Pixel attribute group (GL_PIXEL_MODE_BIT).
926 struct gl_pixel_attrib
928 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
930 /*--- Begin Pixel Transfer State ---*/
931 /* Fields are in the order in which they're applied... */
933 /** Scale & Bias (index shift, offset) */
935 GLfloat RedBias
, RedScale
;
936 GLfloat GreenBias
, GreenScale
;
937 GLfloat BlueBias
, BlueScale
;
938 GLfloat AlphaBias
, AlphaScale
;
939 GLfloat DepthBias
, DepthScale
;
940 GLint IndexShift
, IndexOffset
;
944 /* Note: actual pixel maps are not part of this attrib group */
945 GLboolean MapColorFlag
;
946 GLboolean MapStencilFlag
;
948 /*--- End Pixel Transfer State ---*/
951 GLfloat ZoomX
, ZoomY
;
956 * Point attribute group (GL_POINT_BIT).
958 struct gl_point_attrib
960 GLfloat Size
; /**< User-specified point size */
961 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
962 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
963 GLfloat Threshold
; /**< GL_EXT_point_parameters */
964 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
965 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
966 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
967 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
968 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
969 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
974 * Polygon attribute group (GL_POLYGON_BIT).
976 struct gl_polygon_attrib
978 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
979 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
980 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
981 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
982 GLboolean CullFlag
; /**< Culling on/off flag */
983 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
984 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
985 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
986 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
987 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
988 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
989 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
990 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
991 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
996 * Scissor attributes (GL_SCISSOR_BIT).
998 struct gl_scissor_rect
1000 GLint X
, Y
; /**< Lower left corner of box */
1001 GLsizei Width
, Height
; /**< Size of box */
1003 struct gl_scissor_attrib
1005 GLbitfield EnableFlags
; /**< Scissor test enabled? */
1006 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
1011 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1013 * Three sets of stencil data are tracked so that OpenGL 2.0,
1014 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1015 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1016 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1017 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1018 * GL_EXT_stencil_two_side GL_BACK state.
1020 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1021 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1023 * The derived value \c _TestTwoSide is set when the front-face and back-face
1024 * stencil state are different.
1026 struct gl_stencil_attrib
1028 GLboolean Enabled
; /**< Enabled flag */
1029 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1030 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1031 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1032 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1033 GLboolean _TestTwoSide
;
1034 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1035 GLenum Function
[3]; /**< Stencil function */
1036 GLenum FailFunc
[3]; /**< Fail function */
1037 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1038 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1039 GLint Ref
[3]; /**< Reference value */
1040 GLuint ValueMask
[3]; /**< Value mask */
1041 GLuint WriteMask
[3]; /**< Write mask */
1042 GLuint Clear
; /**< Clear value */
1047 * An index for each type of texture object. These correspond to the GL
1048 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1049 * Note: the order is from highest priority to lowest priority.
1053 TEXTURE_2D_MULTISAMPLE_INDEX
,
1054 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1055 TEXTURE_CUBE_ARRAY_INDEX
,
1056 TEXTURE_BUFFER_INDEX
,
1057 TEXTURE_2D_ARRAY_INDEX
,
1058 TEXTURE_1D_ARRAY_INDEX
,
1059 TEXTURE_EXTERNAL_INDEX
,
1070 * Bit flags for each type of texture object
1073 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1074 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1075 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1076 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1077 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1078 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1079 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1080 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1081 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1082 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1083 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1084 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1089 * Texture image state. Drivers will typically create a subclass of this
1090 * with extra fields for memory buffers, etc.
1092 struct gl_texture_image
1094 GLint InternalFormat
; /**< Internal format as given by the user */
1095 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1096 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1097 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1098 * GL_DEPTH_STENCIL_EXT only. Used for
1099 * choosing TexEnv arithmetic.
1101 mesa_format TexFormat
; /**< The actual texture memory format */
1103 GLuint Border
; /**< 0 or 1 */
1104 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1105 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1106 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1107 GLuint Width2
; /**< = Width - 2*Border */
1108 GLuint Height2
; /**< = Height - 2*Border */
1109 GLuint Depth2
; /**< = Depth - 2*Border */
1110 GLuint WidthLog2
; /**< = log2(Width2) */
1111 GLuint HeightLog2
; /**< = log2(Height2) */
1112 GLuint DepthLog2
; /**< = log2(Depth2) */
1113 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1114 levels, computed from the dimensions */
1116 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1117 GLuint Level
; /**< Which mipmap level am I? */
1118 /** Cube map face: index into gl_texture_object::Image[] array */
1121 /** GL_ARB_texture_multisample */
1122 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1123 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1128 * Indexes for cube map faces.
1143 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1144 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1146 struct gl_sampler_object
1150 GLchar
*Label
; /**< GL_KHR_debug */
1152 GLenum WrapS
; /**< S-axis texture image wrap mode */
1153 GLenum WrapT
; /**< T-axis texture image wrap mode */
1154 GLenum WrapR
; /**< R-axis texture image wrap mode */
1155 GLenum MinFilter
; /**< minification filter */
1156 GLenum MagFilter
; /**< magnification filter */
1157 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1158 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1159 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1160 GLfloat LodBias
; /**< OpenGL 1.4 */
1161 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1162 GLenum CompareMode
; /**< GL_ARB_shadow */
1163 GLenum CompareFunc
; /**< GL_ARB_shadow */
1164 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1165 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1170 * Texture object state. Contains the array of mipmap images, border color,
1171 * wrap modes, filter modes, and shadow/texcompare state.
1173 struct gl_texture_object
1175 mtx_t Mutex
; /**< for thread safety */
1176 GLint RefCount
; /**< reference count */
1177 GLuint Name
; /**< the user-visible texture object ID */
1178 GLchar
*Label
; /**< GL_KHR_debug */
1179 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1180 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
1181 Only valid when Target is valid. */
1183 struct gl_sampler_object Sampler
;
1185 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1186 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
1188 GLfloat Priority
; /**< in [0,1] */
1189 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1190 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1191 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1192 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1193 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1194 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1195 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1196 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1197 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1198 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1199 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1200 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1201 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1202 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1204 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1205 GLboolean _IsFloat
; /**< GL_OES_float_texture */
1206 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
1208 GLuint MinLevel
; /**< GL_ARB_texture_view */
1209 GLuint MinLayer
; /**< GL_ARB_texture_view */
1210 GLuint NumLevels
; /**< GL_ARB_texture_view */
1211 GLuint NumLayers
; /**< GL_ARB_texture_view */
1213 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1214 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1216 /** GL_ARB_texture_buffer_object */
1217 struct gl_buffer_object
*BufferObject
;
1218 GLenum BufferObjectFormat
;
1219 /** Equivalent Mesa format for BufferObjectFormat. */
1220 mesa_format _BufferObjectFormat
;
1221 /** GL_ARB_texture_buffer_range */
1222 GLintptr BufferOffset
;
1223 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1225 /** GL_OES_EGL_image_external */
1226 GLint RequiredTextureImageUnits
;
1228 /** GL_ARB_shader_image_load_store */
1229 GLenum ImageFormatCompatibilityType
;
1233 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1234 #define MAX_COMBINER_TERMS 4
1238 * Texture combine environment state.
1240 struct gl_tex_env_combine_state
1242 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1243 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1244 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1245 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1246 GLenum SourceA
[MAX_COMBINER_TERMS
];
1247 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1248 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1249 GLenum OperandA
[MAX_COMBINER_TERMS
];
1250 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1251 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1252 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1253 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1258 * TexGenEnabled flags.
1265 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1270 * Bit flag versions of the corresponding GL_ constants.
1273 #define TEXGEN_SPHERE_MAP 0x1
1274 #define TEXGEN_OBJ_LINEAR 0x2
1275 #define TEXGEN_EYE_LINEAR 0x4
1276 #define TEXGEN_REFLECTION_MAP_NV 0x8
1277 #define TEXGEN_NORMAL_MAP_NV 0x10
1279 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1280 TEXGEN_REFLECTION_MAP_NV | \
1281 TEXGEN_NORMAL_MAP_NV)
1282 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1283 TEXGEN_REFLECTION_MAP_NV | \
1284 TEXGEN_NORMAL_MAP_NV | \
1290 /** Tex-gen enabled for texture unit? */
1291 #define ENABLE_TEXGEN(unit) (1 << (unit))
1293 /** Non-identity texture matrix for texture unit? */
1294 #define ENABLE_TEXMAT(unit) (1 << (unit))
1298 * Texture coord generation state.
1302 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1303 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1304 GLfloat ObjectPlane
[4];
1305 GLfloat EyePlane
[4];
1310 * Texture unit state. Contains enable flags, texture environment/function/
1311 * combiners, texgen state, and pointers to current texture objects.
1313 struct gl_texture_unit
1315 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1317 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1318 GLclampf EnvColor
[4];
1319 GLfloat EnvColorUnclamped
[4];
1321 struct gl_texgen GenS
;
1322 struct gl_texgen GenT
;
1323 struct gl_texgen GenR
;
1324 struct gl_texgen GenQ
;
1325 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1326 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1328 GLfloat LodBias
; /**< for biasing mipmap levels */
1330 /** Texture targets that have a non-default texture bound */
1331 GLbitfield _BoundTextures
;
1333 /** Current sampler object (GL_ARB_sampler_objects) */
1334 struct gl_sampler_object
*Sampler
;
1337 * \name GL_EXT_texture_env_combine
1339 struct gl_tex_env_combine_state Combine
;
1342 * Derived state based on \c EnvMode and the \c BaseFormat of the
1343 * currently enabled texture.
1345 struct gl_tex_env_combine_state _EnvMode
;
1348 * Currently enabled combiner state. This will point to either
1349 * \c Combine or \c _EnvMode.
1351 struct gl_tex_env_combine_state
*_CurrentCombine
;
1353 /** Current texture object pointers */
1354 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1356 /** Points to highest priority, complete and enabled texture object */
1357 struct gl_texture_object
*_Current
;
1363 * Texture attribute group (GL_TEXTURE_BIT).
1365 struct gl_texture_attrib
1367 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1369 /** GL_ARB_seamless_cubemap */
1370 GLboolean CubeMapSeamless
;
1372 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1374 /** GL_ARB_texture_buffer_object */
1375 struct gl_buffer_object
*BufferObject
;
1377 /** Texture coord units/sets used for fragment texturing */
1378 GLbitfield _EnabledCoordUnits
;
1380 /** Texture coord units that have texgen enabled */
1381 GLbitfield _TexGenEnabled
;
1383 /** Texture coord units that have non-identity matrices */
1384 GLbitfield _TexMatEnabled
;
1386 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1387 GLbitfield _GenFlags
;
1389 /** Largest index of a texture unit with _Current != NULL. */
1390 GLint _MaxEnabledTexImageUnit
;
1392 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1393 GLint NumCurrentTexUsed
;
1395 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1400 * Data structure representing a single clip plane (e.g. one of the elements
1401 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1403 typedef GLfloat gl_clip_plane
[4];
1407 * Transformation attribute group (GL_TRANSFORM_BIT).
1409 struct gl_transform_attrib
1411 GLenum MatrixMode
; /**< Matrix mode */
1412 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1413 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1414 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1415 GLboolean Normalize
; /**< Normalize all normals? */
1416 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1417 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1418 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1419 /** GL_ARB_clip_control */
1420 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1421 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1426 * Viewport attribute group (GL_VIEWPORT_BIT).
1428 struct gl_viewport_attrib
1430 GLfloat X
, Y
; /**< position */
1431 GLfloat Width
, Height
; /**< size */
1432 GLdouble Near
, Far
; /**< Depth buffer range */
1441 } gl_map_buffer_index
;
1445 * Fields describing a mapped buffer range.
1447 struct gl_buffer_mapping
{
1448 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1449 GLvoid
*Pointer
; /**< User-space address of mapping */
1450 GLintptr Offset
; /**< Mapped offset */
1451 GLsizeiptr Length
; /**< Mapped length */
1456 * Usages we've seen for a buffer object.
1459 USAGE_UNIFORM_BUFFER
= 0x1,
1460 USAGE_TEXTURE_BUFFER
= 0x2,
1461 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1466 * GL_ARB_vertex/pixel_buffer_object buffer object
1468 struct gl_buffer_object
1473 GLchar
*Label
; /**< GL_KHR_debug */
1474 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1475 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1476 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1477 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1478 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1479 GLboolean Written
; /**< Ever written to? (for debugging) */
1480 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1481 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1482 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1484 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1489 * Client pixel packing/unpacking attributes
1491 struct gl_pixelstore_attrib
1499 GLboolean SwapBytes
;
1501 GLboolean Invert
; /**< GL_MESA_pack_invert */
1502 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1503 GLint CompressedBlockHeight
;
1504 GLint CompressedBlockDepth
;
1505 GLint CompressedBlockSize
;
1506 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1511 * Client vertex array attributes
1513 struct gl_client_array
1515 GLint Size
; /**< components per element (1,2,3,4) */
1516 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1517 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1518 GLsizei Stride
; /**< user-specified stride */
1519 GLsizei StrideB
; /**< actual stride in bytes */
1520 GLuint _ElementSize
; /**< size of each element in bytes */
1521 const GLubyte
*Ptr
; /**< Points to array data */
1522 GLboolean Enabled
; /**< Enabled flag is a boolean */
1523 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1524 GLboolean Integer
; /**< Integer-valued? */
1525 GLboolean Doubles
; /**< double precision values are not converted to floats */
1526 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1528 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1533 * Vertex attribute array as seen by the client.
1535 * Contains the size, type, format and normalization flag,
1536 * along with the index of a vertex buffer binding point.
1538 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1539 * and is only present for backwards compatibility reasons.
1540 * Rendering always uses VERTEX_BINDING_STRIDE.
1541 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1542 * and VERTEX_BINDING_STRIDE to the same value, while
1543 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1545 struct gl_vertex_attrib_array
1547 GLint Size
; /**< Components per element (1,2,3,4) */
1548 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1549 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1550 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1551 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1552 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1553 GLboolean Enabled
; /**< Whether the array is enabled */
1554 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1555 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1556 GLboolean Doubles
; /**< double precision values are not converted to floats */
1557 GLuint _ElementSize
; /**< Size of each element in bytes */
1558 GLuint VertexBinding
; /**< Vertex buffer binding */
1563 * This describes the buffer object used for a vertex array (or
1564 * multiple vertex arrays). If BufferObj points to the default/null
1565 * buffer object, then the vertex array lives in user memory and not a VBO.
1567 struct gl_vertex_buffer_binding
1569 GLintptr Offset
; /**< User-specified offset */
1570 GLsizei Stride
; /**< User-specified stride */
1571 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1572 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1573 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1578 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1579 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1582 struct gl_vertex_array_object
1584 /** Name of the VAO as received from glGenVertexArray. */
1589 GLchar
*Label
; /**< GL_KHR_debug */
1594 * Does the VAO use ARB semantics or Apple semantics?
1596 * There are several ways in which ARB_vertex_array_object and
1597 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1600 * - ARB VAOs require that all array data be sourced from vertex buffer
1601 * objects, but Apple VAOs do not.
1603 * - ARB VAOs require that names come from GenVertexArrays.
1605 * This flag notes which behavior governs this VAO.
1607 GLboolean ARBsemantics
;
1610 * Has this array object been bound?
1612 GLboolean EverBound
;
1615 * Derived vertex attribute arrays
1617 * This is a legacy data structure created from gl_vertex_attrib_array and
1618 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1620 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1622 /** Vertex attribute arrays */
1623 struct gl_vertex_attrib_array VertexAttrib
[VERT_ATTRIB_MAX
];
1625 /** Vertex buffer bindings */
1626 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1628 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1629 GLbitfield64 _Enabled
;
1631 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1632 GLbitfield64 NewArrays
;
1634 /** The index buffer (also known as the element array buffer in OpenGL). */
1635 struct gl_buffer_object
*IndexBufferObj
;
1639 /** Used to signal when transitioning from one kind of drawing method
1643 DRAW_NONE
, /**< Initial value only */
1650 * Enum for the OpenGL APIs we know about and may support.
1652 * NOTE: This must match the api_enum table in
1653 * src/mesa/main/get_hash_generator.py
1657 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1661 API_OPENGL_LAST
= API_OPENGL_CORE
1665 * Vertex array state
1667 struct gl_array_attrib
1669 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1670 struct gl_vertex_array_object
*VAO
;
1672 /** The default vertex array object */
1673 struct gl_vertex_array_object
*DefaultVAO
;
1675 /** The last VAO accessed by a DSA function */
1676 struct gl_vertex_array_object
*LastLookedUpVAO
;
1678 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1679 struct _mesa_HashTable
*Objects
;
1681 GLint ActiveTexture
; /**< Client Active Texture */
1682 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1683 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1686 * \name Primitive restart controls
1688 * Primitive restart is enabled if either \c PrimitiveRestart or
1689 * \c PrimitiveRestartFixedIndex is set.
1692 GLboolean PrimitiveRestart
;
1693 GLboolean PrimitiveRestartFixedIndex
;
1694 GLboolean _PrimitiveRestart
;
1695 GLuint RestartIndex
;
1698 /** One of the DRAW_xxx flags, not consumed by drivers */
1699 gl_draw_method DrawMethod
;
1701 /* GL_ARB_vertex_buffer_object */
1702 struct gl_buffer_object
*ArrayBufferObj
;
1705 * Vertex arrays as consumed by a driver.
1706 * The array pointer is set up only by the VBO module.
1708 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1710 /** Legal array datatypes and the API for which they have been computed */
1711 GLbitfield LegalTypesMask
;
1712 gl_api LegalTypesMaskAPI
;
1717 * Feedback buffer state
1722 GLbitfield _Mask
; /**< FB_* bits */
1730 * Selection buffer state
1734 GLuint
*Buffer
; /**< selection buffer */
1735 GLuint BufferSize
; /**< size of the selection buffer */
1736 GLuint BufferCount
; /**< number of values in the selection buffer */
1737 GLuint Hits
; /**< number of records in the selection buffer */
1738 GLuint NameStackDepth
; /**< name stack depth */
1739 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1740 GLboolean HitFlag
; /**< hit flag */
1741 GLfloat HitMinZ
; /**< minimum hit depth */
1742 GLfloat HitMaxZ
; /**< maximum hit depth */
1747 * 1-D Evaluator control points
1751 GLuint Order
; /**< Number of control points */
1752 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1753 GLfloat
*Points
; /**< Points to contiguous control points */
1758 * 2-D Evaluator control points
1762 GLuint Uorder
; /**< Number of control points in U dimension */
1763 GLuint Vorder
; /**< Number of control points in V dimension */
1766 GLfloat
*Points
; /**< Points to contiguous control points */
1771 * All evaluator control point state
1773 struct gl_evaluators
1779 struct gl_1d_map Map1Vertex3
;
1780 struct gl_1d_map Map1Vertex4
;
1781 struct gl_1d_map Map1Index
;
1782 struct gl_1d_map Map1Color4
;
1783 struct gl_1d_map Map1Normal
;
1784 struct gl_1d_map Map1Texture1
;
1785 struct gl_1d_map Map1Texture2
;
1786 struct gl_1d_map Map1Texture3
;
1787 struct gl_1d_map Map1Texture4
;
1794 struct gl_2d_map Map2Vertex3
;
1795 struct gl_2d_map Map2Vertex4
;
1796 struct gl_2d_map Map2Index
;
1797 struct gl_2d_map Map2Color4
;
1798 struct gl_2d_map Map2Normal
;
1799 struct gl_2d_map Map2Texture1
;
1800 struct gl_2d_map Map2Texture2
;
1801 struct gl_2d_map Map2Texture3
;
1802 struct gl_2d_map Map2Texture4
;
1807 struct gl_transform_feedback_varying_info
1816 * Per-output info vertex shaders for transform feedback.
1818 struct gl_transform_feedback_output
1820 unsigned OutputRegister
;
1821 unsigned OutputBuffer
;
1822 unsigned NumComponents
;
1825 /** offset (in DWORDs) of this output within the interleaved structure */
1829 * Offset into the output register of the data to output. For example,
1830 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1831 * offset is in the y and z components of the output register.
1833 unsigned ComponentOffset
;
1837 /** Post-link transform feedback info. */
1838 struct gl_transform_feedback_info
1840 unsigned NumOutputs
;
1843 * Number of transform feedback buffers in use by this program.
1845 unsigned NumBuffers
;
1847 struct gl_transform_feedback_output
*Outputs
;
1849 /** Transform feedback varyings used for the linking of this shader program.
1851 * Use for glGetTransformFeedbackVarying().
1853 struct gl_transform_feedback_varying_info
*Varyings
;
1857 * Total number of components stored in each buffer. This may be used by
1858 * hardware back-ends to determine the correct stride when interleaving
1859 * multiple transform feedback outputs in the same buffer.
1861 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1866 * Transform feedback object state
1868 struct gl_transform_feedback_object
1870 GLuint Name
; /**< AKA the object ID */
1872 GLchar
*Label
; /**< GL_KHR_debug */
1873 GLboolean Active
; /**< Is transform feedback enabled? */
1874 GLboolean Paused
; /**< Is transform feedback paused? */
1875 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1877 GLboolean EverBound
; /**< Has this object been bound? */
1880 * GLES: if Active is true, remaining number of primitives which can be
1881 * rendered without overflow. This is necessary to track because GLES
1882 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1883 * glDrawArraysInstanced would overflow transform feedback buffers.
1884 * Undefined if Active is false.
1886 * Not tracked for desktop GL since it's unnecessary.
1888 unsigned GlesRemainingPrims
;
1891 * The shader program active when BeginTransformFeedback() was called.
1892 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1893 * where stage is the pipeline stage that is the source of data for
1894 * transform feedback.
1896 struct gl_shader_program
*shader_program
;
1898 /** The feedback buffers */
1899 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1900 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1902 /** Start of feedback data in dest buffer */
1903 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1906 * Max data to put into dest buffer (in bytes). Computed based on
1907 * RequestedSize and the actual size of the buffer.
1909 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1912 * Size that was specified when the buffer was bound. If the buffer was
1913 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1916 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1921 * Context state for transform feedback.
1923 struct gl_transform_feedback_state
1925 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1927 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1928 struct gl_buffer_object
*CurrentBuffer
;
1930 /** The table of all transform feedback objects */
1931 struct _mesa_HashTable
*Objects
;
1933 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1934 struct gl_transform_feedback_object
*CurrentObject
;
1936 /** The default xform-fb object (Name==0) */
1937 struct gl_transform_feedback_object
*DefaultObject
;
1942 * A "performance monitor" as described in AMD_performance_monitor.
1944 struct gl_perf_monitor_object
1948 /** True if the monitor is currently active (Begin called but not End). */
1952 * True if the monitor has ended.
1954 * This is distinct from !Active because it may never have began.
1959 * A list of groups with currently active counters.
1961 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1963 unsigned *ActiveGroups
;
1966 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1968 * Checking whether counter 'c' in group 'g' is active can be done via:
1970 * BITSET_TEST(ActiveCounters[g], c)
1972 GLuint
**ActiveCounters
;
1976 union gl_perf_monitor_counter_value
1984 struct gl_perf_monitor_counter
1986 /** Human readable name for the counter. */
1990 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1991 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1995 /** Minimum counter value. */
1996 union gl_perf_monitor_counter_value Minimum
;
1998 /** Maximum counter value. */
1999 union gl_perf_monitor_counter_value Maximum
;
2003 struct gl_perf_monitor_group
2005 /** Human readable name for the group. */
2009 * Maximum number of counters in this group which can be active at the
2012 GLuint MaxActiveCounters
;
2014 /** Array of counters within this group. */
2015 const struct gl_perf_monitor_counter
*Counters
;
2021 * Context state for AMD_performance_monitor.
2023 struct gl_perf_monitor_state
2025 /** Array of performance monitor groups (indexed by group ID) */
2026 const struct gl_perf_monitor_group
*Groups
;
2029 /** The table of all performance monitors. */
2030 struct _mesa_HashTable
*Monitors
;
2035 * Names of the various vertex/fragment program register files, etc.
2037 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
2038 * All values should fit in a 4-bit field.
2040 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
2041 * considered to be "uniform" variables since they can only be set outside
2042 * glBegin/End. They're also all stored in the same Parameters array.
2046 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
2047 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
2048 PROGRAM_INPUT
, /**< machine->Inputs[] */
2049 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
2050 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
2051 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
2052 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
2053 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
2054 PROGRAM_ADDRESS
, /**< machine->AddressReg */
2055 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
2056 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
2057 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
2063 * \brief Layout qualifiers for gl_FragDepth.
2065 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
2066 * a layout qualifier.
2068 * \see enum ir_depth_layout
2070 enum gl_frag_depth_layout
2072 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
2073 FRAG_DEPTH_LAYOUT_ANY
,
2074 FRAG_DEPTH_LAYOUT_GREATER
,
2075 FRAG_DEPTH_LAYOUT_LESS
,
2076 FRAG_DEPTH_LAYOUT_UNCHANGED
2081 * Base class for any kind of program object
2087 GLubyte
*String
; /**< Null-terminated program text */
2089 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2090 GLenum Format
; /**< String encoding format */
2092 struct prog_instruction
*Instructions
;
2094 struct nir_shader
*nir
;
2096 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
2097 GLbitfield64 DoubleInputsRead
; /**< Bitmask of which input regs are read and are doubles */
2098 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
2099 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
2100 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
2101 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
2102 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
2104 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
2107 * For vertex and geometry shaders, true if the program uses the
2108 * gl_ClipDistance output. Ignored for fragment shaders.
2110 GLboolean UsesClipDistanceOut
;
2113 /** Named parameters, constants, etc. from program text */
2114 struct gl_program_parameter_list
*Parameters
;
2117 * Local parameters used by the program.
2119 * It's dynamically allocated because it is rarely used (just
2120 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
2123 GLfloat (*LocalParams
)[4];
2125 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2126 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2128 /** Bitmask of which register files are read/written with indirect
2129 * addressing. Mask of (1 << PROGRAM_x) bits.
2131 GLbitfield IndirectRegisterFiles
;
2133 /** Logical counts */
2135 GLuint NumInstructions
;
2136 GLuint NumTemporaries
;
2137 GLuint NumParameters
;
2138 GLuint NumAttributes
;
2139 GLuint NumAddressRegs
;
2140 GLuint NumAluInstructions
;
2141 GLuint NumTexInstructions
;
2142 GLuint NumTexIndirections
;
2144 /** Native, actual h/w counts */
2146 GLuint NumNativeInstructions
;
2147 GLuint NumNativeTemporaries
;
2148 GLuint NumNativeParameters
;
2149 GLuint NumNativeAttributes
;
2150 GLuint NumNativeAddressRegs
;
2151 GLuint NumNativeAluInstructions
;
2152 GLuint NumNativeTexInstructions
;
2153 GLuint NumNativeTexIndirections
;
2158 /** Vertex program object */
2159 struct gl_vertex_program
2161 struct gl_program Base
; /**< base class */
2162 GLboolean IsPositionInvariant
;
2166 /** Geometry program object */
2167 struct gl_geometry_program
2169 struct gl_program Base
; /**< base class */
2174 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2175 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2176 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2177 bool UsesEndPrimitive
;
2182 /** Fragment program object */
2183 struct gl_fragment_program
2185 struct gl_program Base
; /**< base class */
2186 GLboolean UsesKill
; /**< shader uses KIL instruction */
2187 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
2188 GLboolean OriginUpperLeft
;
2189 GLboolean PixelCenterInteger
;
2190 enum gl_frag_depth_layout FragDepthLayout
;
2193 * GLSL interpolation qualifier associated with each fragment shader input.
2194 * For inputs that do not have an interpolation qualifier specified in
2195 * GLSL, the value is INTERP_QUALIFIER_NONE.
2197 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
2200 * Bitfield indicating, for each fragment shader input, 1 if that input
2201 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2203 GLbitfield64 IsCentroid
;
2206 * Bitfield indicating, for each fragment shader input, 1 if that input
2207 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2209 GLbitfield64 IsSample
;
2213 /** Compute program object */
2214 struct gl_compute_program
2216 struct gl_program Base
; /**< base class */
2219 * Size specified using local_size_{x,y,z}.
2221 unsigned LocalSize
[3];
2226 * State common to vertex and fragment programs.
2228 struct gl_program_state
2230 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2231 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2236 * Context state for vertex programs.
2238 struct gl_vertex_program_state
2240 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2241 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2242 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2243 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2244 /** Computed two sided lighting for fixed function/programs. */
2245 GLboolean _TwoSideEnabled
;
2246 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2248 /** Currently enabled and valid vertex program (including internal
2249 * programs, user-defined vertex programs and GLSL vertex shaders).
2250 * This is the program we must use when rendering.
2252 struct gl_vertex_program
*_Current
;
2254 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2256 /** Should fixed-function T&L be implemented with a vertex prog? */
2257 GLboolean _MaintainTnlProgram
;
2259 /** Program to emulate fixed-function T&L (see above) */
2260 struct gl_vertex_program
*_TnlProgram
;
2262 /** Cache of fixed-function programs */
2263 struct gl_program_cache
*Cache
;
2265 GLboolean _Overriden
;
2270 * Context state for geometry programs.
2272 struct gl_geometry_program_state
2274 /** Currently enabled and valid program (including internal programs
2275 * and compiled shader programs).
2277 struct gl_geometry_program
*_Current
;
2281 * Context state for fragment programs.
2283 struct gl_fragment_program_state
2285 GLboolean Enabled
; /**< User-set fragment program enable flag */
2286 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2287 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2289 /** Currently enabled and valid fragment program (including internal
2290 * programs, user-defined fragment programs and GLSL fragment shaders).
2291 * This is the program we must use when rendering.
2293 struct gl_fragment_program
*_Current
;
2295 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2297 /** Should fixed-function texturing be implemented with a fragment prog? */
2298 GLboolean _MaintainTexEnvProgram
;
2300 /** Program to emulate fixed-function texture env/combine (see above) */
2301 struct gl_fragment_program
*_TexEnvProgram
;
2303 /** Cache of fixed-function programs */
2304 struct gl_program_cache
*Cache
;
2309 * Context state for compute programs.
2311 struct gl_compute_program_state
2313 /** Currently enabled and valid program (including internal programs
2314 * and compiled shader programs).
2316 struct gl_compute_program
*_Current
;
2321 * ATI_fragment_shader runtime state
2323 #define ATI_FS_INPUT_PRIMARY 0
2324 #define ATI_FS_INPUT_SECONDARY 1
2326 struct atifs_instruction
;
2327 struct atifs_setupinst
;
2330 * ATI fragment shader
2332 struct ati_fragment_shader
2336 struct atifs_instruction
*Instructions
[2];
2337 struct atifs_setupinst
*SetupInst
[2];
2338 GLfloat Constants
[8][4];
2339 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2340 GLubyte numArithInstr
[2];
2341 GLubyte regsAssigned
[2];
2342 GLubyte NumPasses
; /**< 1 or 2 */
2344 GLubyte last_optype
;
2345 GLboolean interpinp1
;
2351 * Context state for GL_ATI_fragment_shader
2353 struct gl_ati_fragment_shader_state
2356 GLboolean _Enabled
; /**< enabled and valid shader? */
2357 GLboolean Compiling
;
2358 GLfloat GlobalConstants
[8][4];
2359 struct ati_fragment_shader
*Current
;
2364 * A GLSL vertex or fragment shader object.
2368 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2369 * Must be the first field.
2372 gl_shader_stage Stage
;
2373 GLuint Name
; /**< AKA the handle */
2374 GLint RefCount
; /**< Reference count */
2375 GLchar
*Label
; /**< GL_KHR_debug */
2376 GLboolean DeletePending
;
2377 GLboolean CompileStatus
;
2378 bool IsES
; /**< True if this shader uses GLSL ES */
2380 GLuint SourceChecksum
; /**< for debug/logging purposes */
2381 const GLchar
*Source
; /**< Source code string */
2383 struct gl_program
*Program
; /**< Post-compile assembly code */
2386 unsigned Version
; /**< GLSL version used for linking */
2389 * \name Sampler tracking
2391 * \note Each of these fields is only set post-linking.
2394 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2395 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2396 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2400 * Map from sampler unit to texture unit (set by glUniform1i())
2402 * A sampler unit is associated with each sampler uniform by the linker.
2403 * The sampler unit associated with each uniform is stored in the
2404 * \c gl_uniform_storage::sampler field.
2406 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2407 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2408 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2411 * Number of default uniform block components used by this shader.
2413 * This field is only set post-linking.
2415 unsigned num_uniform_components
;
2418 * Number of combined uniform components used by this shader.
2420 * This field is only set post-linking. It is the sum of the uniform block
2421 * sizes divided by sizeof(float), and num_uniform_compoennts.
2423 unsigned num_combined_uniform_components
;
2426 * This shader's uniform block information.
2428 * These fields are only set post-linking.
2430 unsigned NumUniformBlocks
;
2431 struct gl_uniform_block
*UniformBlocks
;
2433 struct exec_list
*ir
;
2434 struct glsl_symbol_table
*symbols
;
2436 bool uses_builtin_functions
;
2437 bool uses_gl_fragcoord
;
2438 bool redeclares_gl_fragcoord
;
2439 bool ARB_fragment_coord_conventions_enable
;
2442 * Fragment shader state from GLSL 1.50 layout qualifiers.
2444 bool origin_upper_left
;
2445 bool pixel_center_integer
;
2448 * Geometry shader state from GLSL 1.50 layout qualifiers.
2453 * 0 - Invocations count not declared in shader, or
2454 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2458 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2459 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2464 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2465 * it's not set in this shader.
2471 * Map from image uniform index to image unit (set by glUniform1i())
2473 * An image uniform index is associated with each image uniform by
2474 * the linker. The image index associated with each uniform is
2475 * stored in the \c gl_uniform_storage::image field.
2477 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2480 * Access qualifier specified in the shader for each image uniform
2481 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2484 * It may be different, though only more strict than the value of
2485 * \c gl_image_unit::Access for the corresponding image unit.
2487 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2490 * Number of image uniforms defined in the shader. It specifies
2491 * the number of valid elements in the \c ImageUnits and \c
2492 * ImageAccess arrays above.
2497 * Whether early fragment tests are enabled as defined by
2498 * ARB_shader_image_load_store.
2500 bool EarlyFragmentTests
;
2503 * Compute shader state from ARB_compute_shader layout qualifiers.
2507 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2508 * it's not set in this shader.
2510 unsigned LocalSize
[3];
2515 struct gl_uniform_buffer_variable
2520 * Name of the uniform as seen by glGetUniformIndices.
2522 * glGetUniformIndices requires that the block instance index \b not be
2523 * present in the name of queried uniforms.
2526 * \c gl_uniform_buffer_variable::IndexName and
2527 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2531 const struct glsl_type
*Type
;
2532 unsigned int Offset
;
2537 enum gl_uniform_block_packing
2545 struct gl_uniform_block
2547 /** Declared name of the uniform block */
2550 /** Array of supplemental information about UBO ir_variables. */
2551 struct gl_uniform_buffer_variable
*Uniforms
;
2555 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2556 * with glBindBufferBase to bind a buffer object to this uniform block. When
2557 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2562 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2563 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2565 GLuint UniformBufferSize
;
2568 * Is this actually an interface block for a shader storage buffer?
2570 bool IsShaderStorage
;
2573 * Layout specified in the shader
2575 * This isn't accessible through the API, but it is used while
2576 * cross-validating uniform blocks.
2578 enum gl_uniform_block_packing _Packing
;
2582 * Structure that represents a reference to an atomic buffer from some
2585 struct gl_active_atomic_buffer
2587 /** Uniform indices of the atomic counters declared within it. */
2591 /** Binding point index associated with it. */
2594 /** Minimum reasonable size it is expected to have. */
2597 /** Shader stages making use of it. */
2598 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2602 * Active resource in a gl_shader_program
2604 struct gl_program_resource
2606 GLenum Type
; /** Program interface type. */
2607 const void *Data
; /** Pointer to resource associated data structure. */
2608 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2612 * A GLSL program object.
2613 * Basically a linked collection of vertex and fragment shaders.
2615 struct gl_shader_program
2617 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2618 GLuint Name
; /**< aka handle or ID */
2619 GLchar
*Label
; /**< GL_KHR_debug */
2620 GLint RefCount
; /**< Reference count */
2621 GLboolean DeletePending
;
2624 * Is the application intending to glGetProgramBinary this program?
2626 GLboolean BinaryRetreivableHint
;
2629 * Indicates whether program can be bound for individual pipeline stages
2630 * using UseProgramStages after it is next linked.
2632 GLboolean SeparateShader
;
2634 GLuint NumShaders
; /**< number of attached shaders */
2635 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2638 * User-defined attribute bindings
2640 * These are set via \c glBindAttribLocation and are used to direct the
2641 * GLSL linker. These are \b not the values used in the compiled shader,
2642 * and they are \b not the values returned by \c glGetAttribLocation.
2644 struct string_to_uint_map
*AttributeBindings
;
2647 * User-defined fragment data bindings
2649 * These are set via \c glBindFragDataLocation and are used to direct the
2650 * GLSL linker. These are \b not the values used in the compiled shader,
2651 * and they are \b not the values returned by \c glGetFragDataLocation.
2653 struct string_to_uint_map
*FragDataBindings
;
2654 struct string_to_uint_map
*FragDataIndexBindings
;
2657 * Transform feedback varyings last specified by
2658 * glTransformFeedbackVaryings().
2660 * For the current set of transform feedback varyings used for transform
2661 * feedback output, see LinkedTransformFeedback.
2666 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2667 } TransformFeedback
;
2669 /** Post-link transform feedback info. */
2670 struct gl_transform_feedback_info LinkedTransformFeedback
;
2672 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2673 enum gl_frag_depth_layout FragDepthLayout
;
2676 * Geometry shader state - copied into gl_geometry_program by
2677 * _mesa_copy_linked_program_data().
2683 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2686 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2687 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2688 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2690 * True if gl_ClipDistance is written to. Copied into
2691 * gl_geometry_program by _mesa_copy_linked_program_data().
2693 GLboolean UsesClipDistance
;
2694 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2695 0 if not present. */
2696 bool UsesEndPrimitive
;
2700 /** Vertex shader state */
2703 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2704 * by _mesa_copy_linked_program_data().
2706 GLboolean UsesClipDistance
;
2707 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2708 0 if not present. */
2712 * Compute shader state - copied into gl_compute_program by
2713 * _mesa_copy_linked_program_data().
2717 * If this shader contains a compute stage, size specified using
2718 * local_size_{x,y,z}. Otherwise undefined.
2720 unsigned LocalSize
[3];
2723 /* post-link info: */
2724 unsigned NumUniformStorage
;
2725 unsigned NumHiddenUniforms
;
2726 struct gl_uniform_storage
*UniformStorage
;
2729 * Mapping from GL uniform locations returned by \c glUniformLocation to
2730 * UniformStorage entries. Arrays will have multiple contiguous slots
2731 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2733 unsigned NumUniformRemapTable
;
2734 struct gl_uniform_storage
**UniformRemapTable
;
2737 * Size of the gl_ClipDistance array that is output from the last pipeline
2738 * stage before the fragment shader.
2740 unsigned LastClipDistanceArraySize
;
2742 unsigned NumUniformBlocks
;
2743 struct gl_uniform_block
*UniformBlocks
;
2746 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2747 * they're used in, or -1.
2749 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2750 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2752 int *UniformBlockStageIndex
[MESA_SHADER_STAGES
];
2755 * Map of active uniform names to locations
2757 * Maps any active uniform that is not an array element to a location.
2758 * Each active uniform, including individual structure members will appear
2759 * in this map. This roughly corresponds to the set of names that would be
2760 * enumerated by \c glGetActiveUniform.
2762 struct string_to_uint_map
*UniformHash
;
2764 struct gl_active_atomic_buffer
*AtomicBuffers
;
2765 unsigned NumAtomicBuffers
;
2767 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2768 GLboolean Validated
;
2769 GLboolean _Used
; /**< Ever used for drawing? */
2770 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2773 unsigned Version
; /**< GLSL version used for linking */
2774 bool IsES
; /**< True if this program uses GLSL ES */
2777 * Per-stage shaders resulting from the first stage of linking.
2779 * Set of linked shaders for this program. The array is accessed using the
2780 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2783 struct gl_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2785 /** List of all active resources after linking. */
2786 struct gl_program_resource
*ProgramResourceList
;
2787 unsigned NumProgramResourceList
;
2789 /* True if any of the fragment shaders attached to this program use:
2790 * #extension ARB_fragment_coord_conventions: enable
2792 GLboolean ARB_fragment_coord_conventions_enable
;
2796 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2797 #define GLSL_LOG 0x2 /**< Write shaders to files */
2798 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2799 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2800 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2801 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2802 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2803 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2804 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2805 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2809 * Context state for GLSL vertex/fragment shaders.
2810 * Extended to support pipeline object
2812 struct gl_pipeline_object
2814 /** Name of the pipeline object as received from glGenProgramPipelines.
2815 * It would be 0 for shaders without separate shader objects.
2823 GLchar
*Label
; /**< GL_KHR_debug */
2826 * Programs used for rendering
2828 * There is a separate program set for each shader stage.
2830 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2832 struct gl_shader_program
*_CurrentFragmentProgram
;
2835 * Program used by glUniform calls.
2837 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2839 struct gl_shader_program
*ActiveProgram
;
2841 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2843 GLboolean EverBound
; /**< Has the pipeline object been created */
2845 GLboolean Validated
; /**< Pipeline Validation status */
2851 * Context state for GLSL pipeline shaders.
2853 struct gl_pipeline_shader_state
2855 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2856 struct gl_pipeline_object
*Current
;
2858 /* Default Object to ensure that _Shader is never NULL */
2859 struct gl_pipeline_object
*Default
;
2861 /** Pipeline objects */
2862 struct _mesa_HashTable
*Objects
;
2866 * Compiler options for a single GLSL shaders type
2868 struct gl_shader_compiler_options
2870 /** Driver-selectable options: */
2871 GLboolean EmitCondCodes
; /**< Use condition codes? */
2872 GLboolean EmitNoLoops
;
2873 GLboolean EmitNoFunctions
;
2874 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2875 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2876 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2877 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2878 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2879 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2882 * \name Forms of indirect addressing the driver cannot do.
2885 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2886 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2887 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2888 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2889 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
2892 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2893 GLuint MaxUnrollIterations
;
2896 * Optimize code for array of structures backends.
2898 * This is a proxy for:
2899 * - preferring DP4 instructions (rather than MUL/MAD) for
2900 * matrix * vector operations, such as position transformation.
2902 GLboolean OptimizeForAOS
;
2904 const struct nir_shader_compiler_options
*NirOptions
;
2909 * Occlusion/timer query object.
2911 struct gl_query_object
2913 GLenum Target
; /**< The query target, when active */
2914 GLuint Id
; /**< hash table ID/name */
2915 GLchar
*Label
; /**< GL_KHR_debug */
2916 GLuint64EXT Result
; /**< the counter */
2917 GLboolean Active
; /**< inside Begin/EndQuery */
2918 GLboolean Ready
; /**< result is ready? */
2919 GLboolean EverBound
;/**< has query object ever been bound */
2920 GLuint Stream
; /**< The stream */
2925 * Context state for query objects.
2927 struct gl_query_state
2929 struct _mesa_HashTable
*QueryObjects
;
2930 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2931 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2933 /** GL_NV_conditional_render */
2934 struct gl_query_object
*CondRenderQuery
;
2936 /** GL_EXT_transform_feedback */
2937 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
2938 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
2940 /** GL_ARB_timer_query */
2941 struct gl_query_object
*TimeElapsed
;
2943 /** GL_ARB_pipeline_statistics_query */
2944 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
2946 GLenum CondRenderMode
;
2950 /** Sync object state */
2951 struct gl_sync_object
2953 GLenum Type
; /**< GL_SYNC_FENCE */
2954 GLuint Name
; /**< Fence name */
2955 GLchar
*Label
; /**< GL_KHR_debug */
2956 GLint RefCount
; /**< Reference count */
2957 GLboolean DeletePending
; /**< Object was deleted while there were still
2958 * live references (e.g., sync not yet finished)
2960 GLenum SyncCondition
;
2961 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2962 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2967 * State which can be shared by multiple contexts:
2969 struct gl_shared_state
2971 mtx_t Mutex
; /**< for thread safety */
2972 GLint RefCount
; /**< Reference count */
2973 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2974 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2976 /** Default texture objects (shared by all texture units) */
2977 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2979 /** Fallback texture used when a bound texture is incomplete */
2980 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2983 * \name Thread safety and statechange notification for texture
2986 * \todo Improve the granularity of locking.
2989 mtx_t TexMutex
; /**< texobj thread safety */
2990 GLuint TextureStateStamp
; /**< state notification for shared tex */
2993 /** Default buffer object for vertex arrays that aren't in VBOs */
2994 struct gl_buffer_object
*NullBufferObj
;
2997 * \name Vertex/geometry/fragment programs
3000 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3001 struct gl_vertex_program
*DefaultVertexProgram
;
3002 struct gl_fragment_program
*DefaultFragmentProgram
;
3005 /* GL_ATI_fragment_shader */
3006 struct _mesa_HashTable
*ATIShaders
;
3007 struct ati_fragment_shader
*DefaultFragmentShader
;
3009 struct _mesa_HashTable
*BufferObjects
;
3011 /** Table of both gl_shader and gl_shader_program objects */
3012 struct _mesa_HashTable
*ShaderObjects
;
3014 /* GL_EXT_framebuffer_object */
3015 struct _mesa_HashTable
*RenderBuffers
;
3016 struct _mesa_HashTable
*FrameBuffers
;
3019 struct set
*SyncObjects
;
3021 /** GL_ARB_sampler_objects */
3022 struct _mesa_HashTable
*SamplerObjects
;
3025 * Some context in this share group was affected by a GPU reset
3027 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3028 * been affected by a GPU reset must also return
3029 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3031 * Once this field becomes true, it is never reset to false.
3033 bool ShareGroupReset
;
3039 * Renderbuffers represent drawing surfaces such as color, depth and/or
3040 * stencil. A framebuffer object has a set of renderbuffers.
3041 * Drivers will typically derive subclasses of this type.
3043 struct gl_renderbuffer
3045 mtx_t Mutex
; /**< for thread safety */
3046 GLuint ClassID
; /**< Useful for drivers */
3048 GLchar
*Label
; /**< GL_KHR_debug */
3050 GLuint Width
, Height
;
3052 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3053 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3055 * True for renderbuffers that wrap textures, giving the driver a chance to
3056 * flush render caches through the FinishRenderTexture hook.
3058 * Drivers may also set this on renderbuffers other than those generated by
3059 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3060 * called without a rb->TexImage.
3062 GLboolean NeedsFinishRenderTexture
;
3064 GLenum InternalFormat
; /**< The user-specified format */
3065 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3066 GL_STENCIL_INDEX. */
3067 mesa_format Format
; /**< The actual renderbuffer memory format */
3069 * Pointer to the texture image if this renderbuffer wraps a texture,
3072 * Note that the reference on the gl_texture_object containing this
3073 * TexImage is held by the gl_renderbuffer_attachment.
3075 struct gl_texture_image
*TexImage
;
3077 /** Delete this renderbuffer */
3078 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3080 /** Allocate new storage for this renderbuffer */
3081 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3082 struct gl_renderbuffer
*rb
,
3083 GLenum internalFormat
,
3084 GLuint width
, GLuint height
);
3089 * A renderbuffer attachment points to either a texture object (and specifies
3090 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3092 struct gl_renderbuffer_attachment
3094 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3098 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3099 * application supplied renderbuffer object.
3101 struct gl_renderbuffer
*Renderbuffer
;
3104 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3105 * supplied texture object.
3107 struct gl_texture_object
*Texture
;
3108 GLuint TextureLevel
; /**< Attached mipmap level. */
3109 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3110 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3111 * and 2D array textures */
3117 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3118 * In C++ terms, think of this as a base class from which device drivers
3119 * will make derived classes.
3121 struct gl_framebuffer
3123 mtx_t Mutex
; /**< for thread safety */
3125 * If zero, this is a window system framebuffer. If non-zero, this
3126 * is a FBO framebuffer; note that for some devices (i.e. those with
3127 * a natural pixel coordinate system for FBOs that differs from the
3128 * OpenGL/Mesa coordinate system), this means that the viewport,
3129 * polygon face orientation, and polygon stipple will have to be inverted.
3134 GLchar
*Label
; /**< GL_KHR_debug */
3136 GLboolean DeletePending
;
3139 * The framebuffer's visual. Immutable if this is a window system buffer.
3140 * Computed from attachments if user-made FBO.
3142 struct gl_config Visual
;
3145 * Size of frame buffer in pixels. If there are no attachments, then both
3148 GLuint Width
, Height
;
3151 * In the case that the framebuffer has no attachment (i.e.
3152 * GL_ARB_framebuffer_no_attachments) then the geometry of
3153 * the framebuffer is specified by the default values.
3156 GLuint Width
, Height
, Layers
, NumSamples
;
3157 GLboolean FixedSampleLocations
;
3160 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3161 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3162 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3169 /** \name Derived Z buffer stuff */
3171 GLuint _DepthMax
; /**< Max depth buffer value */
3172 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3173 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3176 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3179 /** Whether one of Attachment has Type != GL_NONE
3180 * NOTE: the values for Width and Height are set to 0 in case of having
3181 * no attachments, a backend driver supporting the extension
3182 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3183 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3184 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3185 * _Ymax do NOT take into account _HasAttachments being false). To get the
3186 * geometry of the framebuffer, the helper functions
3187 * _mesa_geometric_width(),
3188 * _mesa_geometric_height(),
3189 * _mesa_geometric_samples() and
3190 * _mesa_geometric_layers()
3191 * are available that check _HasAttachments.
3193 bool _HasAttachments
;
3195 /** Integer color values */
3196 GLboolean _IntegerColor
;
3198 /* ARB_color_buffer_float */
3199 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3200 GLboolean _HasSNormOrFloatColorBuffer
;
3203 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3204 * is not layered. For cube maps and cube map arrays, each cube face
3205 * counts as a layer. As the case for Width, Height a backend driver
3206 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3207 * in the case that _HasAttachments is false
3209 GLuint MaxNumLayers
;
3211 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3212 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3214 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3215 * attribute group and GL_PIXEL attribute group, respectively.
3217 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3218 GLenum ColorReadBuffer
;
3220 /** Computed from ColorDraw/ReadBuffer above */
3221 GLuint _NumColorDrawBuffers
;
3222 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3223 GLint _ColorReadBufferIndex
; /* -1 = None */
3224 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3225 struct gl_renderbuffer
*_ColorReadBuffer
;
3227 /** Delete this framebuffer */
3228 void (*Delete
)(struct gl_framebuffer
*fb
);
3233 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3237 GLushort RangeMin
; /**< min value exponent */
3238 GLushort RangeMax
; /**< max value exponent */
3239 GLushort Precision
; /**< number of mantissa bits */
3244 * Limits for vertex, geometry and fragment programs/shaders.
3246 struct gl_program_constants
3248 /* logical limits */
3249 GLuint MaxInstructions
;
3250 GLuint MaxAluInstructions
;
3251 GLuint MaxTexInstructions
;
3252 GLuint MaxTexIndirections
;
3255 GLuint MaxAddressRegs
;
3256 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3257 GLuint MaxParameters
;
3258 GLuint MaxLocalParams
;
3259 GLuint MaxEnvParams
;
3260 /* native/hardware limits */
3261 GLuint MaxNativeInstructions
;
3262 GLuint MaxNativeAluInstructions
;
3263 GLuint MaxNativeTexInstructions
;
3264 GLuint MaxNativeTexIndirections
;
3265 GLuint MaxNativeAttribs
;
3266 GLuint MaxNativeTemps
;
3267 GLuint MaxNativeAddressRegs
;
3268 GLuint MaxNativeParameters
;
3270 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3273 * \name Per-stage input / output limits
3275 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3276 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3277 * ES). This is stored as \c gl_constants::MaxVarying.
3279 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3280 * variables. Each stage as a certain number of outputs that it can feed
3281 * to the next stage and a certain number inputs that it can consume from
3282 * the previous stage.
3284 * Vertex shader inputs do not participate this in this accounting.
3285 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3287 * Fragment shader outputs do not participate this in this accounting.
3288 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3291 GLuint MaxInputComponents
;
3292 GLuint MaxOutputComponents
;
3295 /* ES 2.0 and GL_ARB_ES2_compatibility */
3296 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3297 struct gl_precision LowInt
, MediumInt
, HighInt
;
3298 /* GL_ARB_uniform_buffer_object */
3299 GLuint MaxUniformBlocks
;
3300 GLuint MaxCombinedUniformComponents
;
3301 GLuint MaxTextureImageUnits
;
3303 /* GL_ARB_shader_atomic_counters */
3304 GLuint MaxAtomicBuffers
;
3305 GLuint MaxAtomicCounters
;
3307 /* GL_ARB_shader_image_load_store */
3308 GLuint MaxImageUniforms
;
3313 * Constants which may be overridden by device driver during context creation
3314 * but are never changed after that.
3318 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3319 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3320 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3321 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3322 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3323 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3324 GLuint MaxTextureCoordUnits
;
3325 GLuint MaxCombinedTextureImageUnits
;
3326 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3327 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3328 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3329 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3331 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3333 GLuint MaxArrayLockSize
;
3337 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3338 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3339 GLfloat PointSizeGranularity
;
3340 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3341 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3342 GLfloat LineWidthGranularity
;
3344 GLuint MaxClipPlanes
;
3346 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3347 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3349 GLuint MaxViewportWidth
, MaxViewportHeight
;
3350 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3351 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3355 } ViewportBounds
; /**< GL_ARB_viewport_array */
3357 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3358 GLuint MaxProgramMatrices
;
3359 GLuint MaxProgramMatrixStackDepth
;
3362 GLuint SamplesPassed
;
3365 GLuint PrimitivesGenerated
;
3366 GLuint PrimitivesWritten
;
3367 GLuint VerticesSubmitted
;
3368 GLuint PrimitivesSubmitted
;
3369 GLuint VsInvocations
;
3371 GLuint TessInvocations
;
3372 GLuint GsInvocations
;
3373 GLuint GsPrimitives
;
3374 GLuint FsInvocations
;
3375 GLuint ComputeInvocations
;
3376 GLuint ClInPrimitives
;
3377 GLuint ClOutPrimitives
;
3380 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3382 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3383 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3384 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3387 * GL_ARB_framebuffer_no_attachments
3389 GLuint MaxFramebufferWidth
;
3390 GLuint MaxFramebufferHeight
;
3391 GLuint MaxFramebufferLayers
;
3392 GLuint MaxFramebufferSamples
;
3394 /** Number of varying vectors between any two shader stages. */
3398 * GL_ARB_uniform_buffer_object
3400 GLuint MaxCombinedUniformBlocks
;
3401 GLuint MaxUniformBufferBindings
;
3402 GLuint MaxUniformBlockSize
;
3403 GLuint UniformBufferOffsetAlignment
;
3407 * GL_ARB_explicit_uniform_location
3409 GLuint MaxUserAssignableUniformLocations
;
3411 /** GL_ARB_geometry_shader4 */
3412 GLuint MaxGeometryOutputVertices
;
3413 GLuint MaxGeometryTotalOutputComponents
;
3415 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3418 * Changes default GLSL extension behavior from "error" to "warn". It's out
3419 * of spec, but it can make some apps work that otherwise wouldn't.
3421 GLboolean ForceGLSLExtensionsWarn
;
3424 * If non-zero, forces GLSL shaders to behave as if they began
3425 * with "#version ForceGLSLVersion".
3427 GLuint ForceGLSLVersion
;
3430 * Allow GLSL #extension directives in the middle of shaders.
3432 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3435 * Does the driver support real 32-bit integers? (Otherwise, integers are
3436 * simulated via floats.)
3438 GLboolean NativeIntegers
;
3441 * Does VertexID count from zero or from base vertex?
3444 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3445 * ignored and need not be set.
3447 bool VertexID_is_zero_based
;
3450 * If the driver supports real 32-bit integers, what integer value should be
3451 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3453 GLuint UniformBooleanTrue
;
3456 * Maximum amount of time, measured in nanseconds, that the server can wait.
3458 GLuint64 MaxServerWaitTimeout
;
3460 /** GL_EXT_provoking_vertex */
3461 GLboolean QuadsFollowProvokingVertexConvention
;
3463 /** OpenGL version 3.0 */
3464 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3466 /** OpenGL version 3.2 */
3467 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3469 /** OpenGL version 4.4 */
3470 GLuint MaxVertexAttribStride
;
3472 /** GL_EXT_transform_feedback */
3473 GLuint MaxTransformFeedbackBuffers
;
3474 GLuint MaxTransformFeedbackSeparateComponents
;
3475 GLuint MaxTransformFeedbackInterleavedComponents
;
3476 GLuint MaxVertexStreams
;
3478 /** GL_EXT_gpu_shader4 */
3479 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3481 /** GL_ARB_texture_gather */
3482 GLuint MinProgramTextureGatherOffset
;
3483 GLuint MaxProgramTextureGatherOffset
;
3484 GLuint MaxProgramTextureGatherComponents
;
3486 /* GL_ARB_robustness */
3487 GLenum ResetStrategy
;
3489 /* GL_ARB_blend_func_extended */
3490 GLuint MaxDualSourceDrawBuffers
;
3493 * Whether the implementation strips out and ignores texture borders.
3495 * Many GPU hardware implementations don't support rendering with texture
3496 * borders and mipmapped textures. (Note: not static border color, but the
3497 * old 1-pixel border around each edge). Implementations then have to do
3498 * slow fallbacks to be correct, or just ignore the border and be fast but
3499 * wrong. Setting the flag strips the border off of TexImage calls,
3500 * providing "fast but wrong" at significantly reduced driver complexity.
3502 * Texture borders are deprecated in GL 3.0.
3504 GLboolean StripTextureBorder
;
3507 * For drivers which can do a better job at eliminating unused uniforms
3508 * than the GLSL compiler.
3510 * XXX Remove these as soon as a better solution is available.
3512 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3515 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3516 * than passing the transform feedback object to the drawing function.
3518 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3520 /** GL_ARB_map_buffer_alignment */
3521 GLuint MinMapBufferAlignment
;
3524 * Disable varying packing. This is out of spec, but potentially useful
3525 * for older platforms that supports a limited number of texture
3526 * indirections--on these platforms, unpacking the varyings in the fragment
3527 * shader increases the number of texture indirections by 1, which might
3528 * make some shaders not executable at all.
3530 * Drivers that support transform feedback must set this value to GL_FALSE.
3532 GLboolean DisableVaryingPacking
;
3535 * Should meaningful names be generated for compiler temporary variables?
3537 * Generally, it is not useful to have the compiler generate "meaningful"
3538 * names for temporary variables that it creates. This can, however, be a
3539 * useful debugging aid. In Mesa debug builds or release builds when
3540 * MESA_GLSL is set at run-time, meaningful names will be generated.
3541 * Drivers can also force names to be generated by setting this field.
3542 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3543 * vertex shader assembly) is set at run-time.
3545 bool GenerateTemporaryNames
;
3548 * Maximum value supported for an index in DrawElements and friends.
3550 * This must be at least (1ull<<24)-1. The default value is
3553 * \since ES 3.0 or GL_ARB_ES3_compatibility
3554 * \sa _mesa_init_constants
3556 GLuint64 MaxElementIndex
;
3559 * Disable interpretation of line continuations (lines ending with a
3560 * backslash character ('\') in GLSL source.
3562 GLboolean DisableGLSLLineContinuations
;
3564 /** GL_ARB_texture_multisample */
3565 GLint MaxColorTextureSamples
;
3566 GLint MaxDepthTextureSamples
;
3567 GLint MaxIntegerSamples
;
3570 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3571 * samples are laid out in a rectangular grid roughly corresponding to
3572 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3573 * are used to map indices of rectangular grid to sample numbers within
3574 * a pixel. This mapping of indices to sample numbers must be initialized
3575 * by the driver for the target hardware. For example, if we have the 8X
3576 * MSAA sample number layout (sample positions) for XYZ hardware:
3578 * sample indices layout sample number layout
3579 * --------- ---------
3580 * | 0 | 1 | | a | b |
3581 * --------- ---------
3582 * | 2 | 3 | | c | d |
3583 * --------- ---------
3584 * | 4 | 5 | | e | f |
3585 * --------- ---------
3586 * | 6 | 7 | | g | h |
3587 * --------- ---------
3589 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3591 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3593 * SampleMap8x = {a, b, c, d, e, f, g, h};
3595 * Follow the logic for other sample counts.
3597 uint8_t SampleMap2x
[2];
3598 uint8_t SampleMap4x
[4];
3599 uint8_t SampleMap8x
[8];
3601 /** GL_ARB_shader_atomic_counters */
3602 GLuint MaxAtomicBufferBindings
;
3603 GLuint MaxAtomicBufferSize
;
3604 GLuint MaxCombinedAtomicBuffers
;
3605 GLuint MaxCombinedAtomicCounters
;
3607 /** GL_ARB_vertex_attrib_binding */
3608 GLint MaxVertexAttribRelativeOffset
;
3609 GLint MaxVertexAttribBindings
;
3611 /* GL_ARB_shader_image_load_store */
3612 GLuint MaxImageUnits
;
3613 GLuint MaxCombinedImageUnitsAndFragmentOutputs
;
3614 GLuint MaxImageSamples
;
3615 GLuint MaxCombinedImageUniforms
;
3617 /** GL_ARB_compute_shader */
3618 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3619 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3620 GLuint MaxComputeWorkGroupInvocations
;
3622 /** GL_ARB_gpu_shader5 */
3623 GLfloat MinFragmentInterpolationOffset
;
3624 GLfloat MaxFragmentInterpolationOffset
;
3626 GLboolean FakeSWMSAA
;
3628 /** GL_KHR_context_flush_control */
3629 GLenum ContextReleaseBehavior
;
3631 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3636 * Enable flag for each OpenGL extension. Different device drivers will
3637 * enable different extensions at runtime.
3639 struct gl_extensions
3641 GLboolean dummy
; /* don't remove this! */
3642 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3643 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3644 GLboolean ANGLE_texture_compression_dxt
;
3645 GLboolean ARB_ES2_compatibility
;
3646 GLboolean ARB_ES3_compatibility
;
3647 GLboolean ARB_arrays_of_arrays
;
3648 GLboolean ARB_base_instance
;
3649 GLboolean ARB_blend_func_extended
;
3650 GLboolean ARB_buffer_storage
;
3651 GLboolean ARB_clear_texture
;
3652 GLboolean ARB_clip_control
;
3653 GLboolean ARB_color_buffer_float
;
3654 GLboolean ARB_compute_shader
;
3655 GLboolean ARB_conditional_render_inverted
;
3656 GLboolean ARB_conservative_depth
;
3657 GLboolean ARB_copy_image
;
3658 GLboolean ARB_depth_buffer_float
;
3659 GLboolean ARB_depth_clamp
;
3660 GLboolean ARB_depth_texture
;
3661 GLboolean ARB_derivative_control
;
3662 GLboolean ARB_draw_buffers_blend
;
3663 GLboolean ARB_draw_elements_base_vertex
;
3664 GLboolean ARB_draw_indirect
;
3665 GLboolean ARB_draw_instanced
;
3666 GLboolean ARB_fragment_coord_conventions
;
3667 GLboolean ARB_fragment_layer_viewport
;
3668 GLboolean ARB_fragment_program
;
3669 GLboolean ARB_fragment_program_shadow
;
3670 GLboolean ARB_fragment_shader
;
3671 GLboolean ARB_framebuffer_no_attachments
;
3672 GLboolean ARB_framebuffer_object
;
3673 GLboolean ARB_explicit_attrib_location
;
3674 GLboolean ARB_explicit_uniform_location
;
3675 GLboolean ARB_geometry_shader4
;
3676 GLboolean ARB_gpu_shader5
;
3677 GLboolean ARB_gpu_shader_fp64
;
3678 GLboolean ARB_half_float_vertex
;
3679 GLboolean ARB_instanced_arrays
;
3680 GLboolean ARB_internalformat_query
;
3681 GLboolean ARB_map_buffer_range
;
3682 GLboolean ARB_occlusion_query
;
3683 GLboolean ARB_occlusion_query2
;
3684 GLboolean ARB_pipeline_statistics_query
;
3685 GLboolean ARB_point_sprite
;
3686 GLboolean ARB_sample_shading
;
3687 GLboolean ARB_seamless_cube_map
;
3688 GLboolean ARB_shader_atomic_counters
;
3689 GLboolean ARB_shader_bit_encoding
;
3690 GLboolean ARB_shader_image_load_store
;
3691 GLboolean ARB_shader_precision
;
3692 GLboolean ARB_shader_stencil_export
;
3693 GLboolean ARB_shader_storage_buffer_object
;
3694 GLboolean ARB_shader_texture_lod
;
3695 GLboolean ARB_shading_language_packing
;
3696 GLboolean ARB_shading_language_420pack
;
3697 GLboolean ARB_shadow
;
3698 GLboolean ARB_stencil_texturing
;
3700 GLboolean ARB_tessellation_shader
;
3701 GLboolean ARB_texture_border_clamp
;
3702 GLboolean ARB_texture_buffer_object
;
3703 GLboolean ARB_texture_buffer_object_rgb32
;
3704 GLboolean ARB_texture_buffer_range
;
3705 GLboolean ARB_texture_compression_bptc
;
3706 GLboolean ARB_texture_compression_rgtc
;
3707 GLboolean ARB_texture_cube_map
;
3708 GLboolean ARB_texture_cube_map_array
;
3709 GLboolean ARB_texture_env_combine
;
3710 GLboolean ARB_texture_env_crossbar
;
3711 GLboolean ARB_texture_env_dot3
;
3712 GLboolean ARB_texture_float
;
3713 GLboolean ARB_texture_gather
;
3714 GLboolean ARB_texture_mirror_clamp_to_edge
;
3715 GLboolean ARB_texture_multisample
;
3716 GLboolean ARB_texture_non_power_of_two
;
3717 GLboolean ARB_texture_stencil8
;
3718 GLboolean ARB_texture_query_levels
;
3719 GLboolean ARB_texture_query_lod
;
3720 GLboolean ARB_texture_rg
;
3721 GLboolean ARB_texture_rgb10_a2ui
;
3722 GLboolean ARB_texture_view
;
3723 GLboolean ARB_timer_query
;
3724 GLboolean ARB_transform_feedback2
;
3725 GLboolean ARB_transform_feedback3
;
3726 GLboolean ARB_transform_feedback_instanced
;
3727 GLboolean ARB_uniform_buffer_object
;
3728 GLboolean ARB_vertex_attrib_64bit
;
3729 GLboolean ARB_vertex_program
;
3730 GLboolean ARB_vertex_shader
;
3731 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3732 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3733 GLboolean ARB_viewport_array
;
3734 GLboolean EXT_blend_color
;
3735 GLboolean EXT_blend_equation_separate
;
3736 GLboolean EXT_blend_func_separate
;
3737 GLboolean EXT_blend_minmax
;
3738 GLboolean EXT_depth_bounds_test
;
3739 GLboolean EXT_draw_buffers2
;
3740 GLboolean EXT_framebuffer_multisample
;
3741 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3742 GLboolean EXT_framebuffer_sRGB
;
3743 GLboolean EXT_gpu_program_parameters
;
3744 GLboolean EXT_gpu_shader4
;
3745 GLboolean EXT_packed_float
;
3746 GLboolean EXT_pixel_buffer_object
;
3747 GLboolean EXT_point_parameters
;
3748 GLboolean EXT_polygon_offset_clamp
;
3749 GLboolean EXT_provoking_vertex
;
3750 GLboolean EXT_shader_integer_mix
;
3751 GLboolean EXT_stencil_two_side
;
3752 GLboolean EXT_texture3D
;
3753 GLboolean EXT_texture_array
;
3754 GLboolean EXT_texture_compression_latc
;
3755 GLboolean EXT_texture_compression_s3tc
;
3756 GLboolean EXT_texture_env_dot3
;
3757 GLboolean EXT_texture_filter_anisotropic
;
3758 GLboolean EXT_texture_integer
;
3759 GLboolean EXT_texture_mirror_clamp
;
3760 GLboolean EXT_texture_shared_exponent
;
3761 GLboolean EXT_texture_snorm
;
3762 GLboolean EXT_texture_sRGB
;
3763 GLboolean EXT_texture_sRGB_decode
;
3764 GLboolean EXT_texture_swizzle
;
3765 GLboolean EXT_transform_feedback
;
3766 GLboolean EXT_timer_query
;
3767 GLboolean EXT_vertex_array_bgra
;
3768 GLboolean OES_standard_derivatives
;
3769 /* vendor extensions */
3770 GLboolean AMD_performance_monitor
;
3771 GLboolean AMD_pinned_memory
;
3772 GLboolean AMD_seamless_cubemap_per_texture
;
3773 GLboolean AMD_vertex_shader_layer
;
3774 GLboolean AMD_vertex_shader_viewport_index
;
3775 GLboolean APPLE_object_purgeable
;
3776 GLboolean ATI_texture_compression_3dc
;
3777 GLboolean ATI_texture_mirror_once
;
3778 GLboolean ATI_texture_env_combine3
;
3779 GLboolean ATI_fragment_shader
;
3780 GLboolean ATI_separate_stencil
;
3781 GLboolean INTEL_performance_query
;
3782 GLboolean MESA_pack_invert
;
3783 GLboolean MESA_ycbcr_texture
;
3784 GLboolean NV_conditional_render
;
3785 GLboolean NV_fog_distance
;
3786 GLboolean NV_fragment_program_option
;
3787 GLboolean NV_point_sprite
;
3788 GLboolean NV_primitive_restart
;
3789 GLboolean NV_texture_barrier
;
3790 GLboolean NV_texture_env_combine4
;
3791 GLboolean NV_texture_rectangle
;
3792 GLboolean NV_vdpau_interop
;
3793 GLboolean TDFX_texture_compression_FXT1
;
3794 GLboolean OES_EGL_image
;
3795 GLboolean OES_draw_texture
;
3796 GLboolean OES_depth_texture_cube_map
;
3797 GLboolean OES_EGL_image_external
;
3798 GLboolean OES_texture_float
;
3799 GLboolean OES_texture_float_linear
;
3800 GLboolean OES_texture_half_float
;
3801 GLboolean OES_texture_half_float_linear
;
3802 GLboolean OES_compressed_ETC1_RGB8_texture
;
3803 GLboolean extension_sentinel
;
3804 /** The extension string */
3805 const GLubyte
*String
;
3806 /** Number of supported extensions */
3812 * A stack of matrices (projection, modelview, color, texture, etc).
3814 struct gl_matrix_stack
3816 GLmatrix
*Top
; /**< points into Stack */
3817 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3818 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3819 GLuint MaxDepth
; /**< size of Stack[] array */
3820 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3825 * \name Bits for image transfer operations
3826 * \sa __struct gl_contextRec::ImageTransferState.
3829 #define IMAGE_SCALE_BIAS_BIT 0x1
3830 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3831 #define IMAGE_MAP_COLOR_BIT 0x4
3832 #define IMAGE_CLAMP_BIT 0x800
3835 /** Pixel Transfer ops */
3836 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3837 IMAGE_SHIFT_OFFSET_BIT | \
3838 IMAGE_MAP_COLOR_BIT)
3841 * \name Bits to indicate what state has changed.
3844 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3845 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3846 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3847 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3848 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3849 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3850 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3851 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3852 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3853 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3854 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3855 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3856 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3857 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3858 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3859 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3860 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3861 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3862 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3863 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3864 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3865 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3866 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3867 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3868 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3869 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3870 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3871 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3872 #define _NEW_BUFFER_OBJECT (1 << 28)
3873 #define _NEW_FRAG_CLAMP (1 << 29)
3874 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3875 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3881 * Composite state flags
3884 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3890 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3900 /* This has to be included here. */
3905 * Display list flags.
3906 * Strictly this is a tnl-private concept, but it doesn't seem
3907 * worthwhile adding a tnl private structure just to hold this one bit
3910 #define DLIST_DANGLING_REFS 0x1
3913 /** Opaque declaration of display list payload data type */
3914 union gl_dlist_node
;
3918 * Provide a location where information about a display list can be
3919 * collected. Could be extended with driverPrivate structures,
3920 * etc. in the future.
3922 struct gl_display_list
3925 GLchar
*Label
; /**< GL_KHR_debug */
3926 GLbitfield Flags
; /**< DLIST_x flags */
3927 /** The dlist commands are in a linked list of nodes */
3928 union gl_dlist_node
*Head
;
3933 * State used during display list compilation and execution.
3935 struct gl_dlist_state
3937 GLuint CallDepth
; /**< Current recursion calling depth */
3939 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3940 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3941 GLuint CurrentPos
; /**< Index into current block of nodes */
3943 GLvertexformat ListVtxfmt
;
3945 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3946 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3948 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3949 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3952 /* State known to have been set by the currently-compiling display
3953 * list. Used to eliminate some redundant state changes.
3961 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3962 * to small enums suitable for use as an array index.
3965 enum mesa_debug_source
{
3966 MESA_DEBUG_SOURCE_API
,
3967 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3968 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3969 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3970 MESA_DEBUG_SOURCE_APPLICATION
,
3971 MESA_DEBUG_SOURCE_OTHER
,
3972 MESA_DEBUG_SOURCE_COUNT
3975 enum mesa_debug_type
{
3976 MESA_DEBUG_TYPE_ERROR
,
3977 MESA_DEBUG_TYPE_DEPRECATED
,
3978 MESA_DEBUG_TYPE_UNDEFINED
,
3979 MESA_DEBUG_TYPE_PORTABILITY
,
3980 MESA_DEBUG_TYPE_PERFORMANCE
,
3981 MESA_DEBUG_TYPE_OTHER
,
3982 MESA_DEBUG_TYPE_MARKER
,
3983 MESA_DEBUG_TYPE_PUSH_GROUP
,
3984 MESA_DEBUG_TYPE_POP_GROUP
,
3985 MESA_DEBUG_TYPE_COUNT
3988 enum mesa_debug_severity
{
3989 MESA_DEBUG_SEVERITY_LOW
,
3990 MESA_DEBUG_SEVERITY_MEDIUM
,
3991 MESA_DEBUG_SEVERITY_HIGH
,
3992 MESA_DEBUG_SEVERITY_NOTIFICATION
,
3993 MESA_DEBUG_SEVERITY_COUNT
3999 * Driver-specific state flags.
4001 * These are or'd with gl_context::NewDriverState to notify a driver about
4002 * a state change. The driver sets the flags at context creation and
4003 * the meaning of the bits set is opaque to core Mesa.
4005 struct gl_driver_flags
4007 /** gl_context::Array::_DrawArrays (vertex array state) */
4010 /** gl_context::TransformFeedback::CurrentObject */
4011 uint64_t NewTransformFeedback
;
4013 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4014 uint64_t NewTransformFeedbackProg
;
4016 /** gl_context::RasterDiscard */
4017 uint64_t NewRasterizerDiscard
;
4020 * gl_context::UniformBufferBindings
4021 * gl_shader_program::UniformBlocks
4023 uint64_t NewUniformBuffer
;
4025 uint64_t NewTextureBuffer
;
4028 * gl_context::AtomicBufferBindings
4030 uint64_t NewAtomicBuffer
;
4033 * gl_context::ImageUnits
4035 uint64_t NewImageUnits
;
4038 struct gl_uniform_buffer_binding
4040 struct gl_buffer_object
*BufferObject
;
4041 /** Start of uniform block data in the buffer */
4043 /** Size of data allowed to be referenced from the buffer (in bytes) */
4046 * glBindBufferBase() indicates that the Size should be ignored and only
4047 * limited by the current size of the BufferObject.
4049 GLboolean AutomaticSize
;
4053 * ARB_shader_image_load_store image unit.
4055 struct gl_image_unit
4058 * Texture object bound to this unit.
4060 struct gl_texture_object
*TexObj
;
4063 * Level of the texture object bound to this unit.
4068 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4069 * GL_FALSE if only some specific layer of the texture is bound.
4075 * GL_TRUE if the state of this image unit is valid and access from
4076 * the shader is allowed. Otherwise loads from this unit should
4077 * return zero and stores should have no effect.
4082 * Layer of the texture object bound to this unit, or zero if the
4083 * whole level is bound.
4088 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4089 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4094 * GL internal format that determines the interpretation of the
4095 * image memory when shader image operations are performed through
4101 * Mesa format corresponding to \c Format.
4103 mesa_format _ActualFormat
;
4108 * Binding point for an atomic counter buffer object.
4110 struct gl_atomic_buffer_binding
4112 struct gl_buffer_object
*BufferObject
;
4118 * Mesa rendering context.
4120 * This is the central context data structure for Mesa. Almost all
4121 * OpenGL state is contained in this structure.
4122 * Think of this as a base class from which device drivers will derive
4127 /** State possibly shared with other contexts in the address space */
4128 struct gl_shared_state
*Shared
;
4130 /** \name API function pointer tables */
4134 * The current dispatch table for non-displaylist-saving execution, either
4135 * BeginEnd or OutsideBeginEnd
4137 struct _glapi_table
*Exec
;
4139 * The normal dispatch table for non-displaylist-saving, non-begin/end
4141 struct _glapi_table
*OutsideBeginEnd
;
4142 /** The dispatch table used between glNewList() and glEndList() */
4143 struct _glapi_table
*Save
;
4145 * The dispatch table used between glBegin() and glEnd() (outside of a
4146 * display list). Only valid functions between those two are set, which is
4147 * mostly just the set in a GLvertexformat struct.
4149 struct _glapi_table
*BeginEnd
;
4151 * Tracks the current dispatch table out of the 3 above, so that it can be
4152 * re-set on glXMakeCurrent().
4154 struct _glapi_table
*CurrentDispatch
;
4157 struct gl_config Visual
;
4158 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4159 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4160 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4161 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4164 * Device driver function pointer table
4166 struct dd_function_table Driver
;
4168 /** Core/Driver constants */
4169 struct gl_constants Const
;
4171 /** \name The various 4x4 matrix stacks */
4173 struct gl_matrix_stack ModelviewMatrixStack
;
4174 struct gl_matrix_stack ProjectionMatrixStack
;
4175 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4176 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4177 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4180 /** Combined modelview and projection matrix */
4181 GLmatrix _ModelProjectMatrix
;
4183 /** \name Display lists */
4184 struct gl_dlist_state ListState
;
4186 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4187 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4189 /** Extension information */
4190 struct gl_extensions Extensions
;
4192 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4194 char *VersionString
;
4196 /** \name State attribute stack (for glPush/PopAttrib) */
4198 GLuint AttribStackDepth
;
4199 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4202 /** \name Renderer attribute groups
4204 * We define a struct for each attribute group to make pushing and popping
4205 * attributes easy. Also it's a good organization.
4208 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4209 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4210 struct gl_current_attrib Current
; /**< Current attributes */
4211 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4212 struct gl_eval_attrib Eval
; /**< Eval attributes */
4213 struct gl_fog_attrib Fog
; /**< Fog attributes */
4214 struct gl_hint_attrib Hint
; /**< Hint attributes */
4215 struct gl_light_attrib Light
; /**< Light attributes */
4216 struct gl_line_attrib Line
; /**< Line attributes */
4217 struct gl_list_attrib List
; /**< List attributes */
4218 struct gl_multisample_attrib Multisample
;
4219 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4220 struct gl_point_attrib Point
; /**< Point attributes */
4221 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4222 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4223 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4224 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4225 struct gl_texture_attrib Texture
; /**< Texture attributes */
4226 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4227 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4230 /** \name Client attribute stack */
4232 GLuint ClientAttribStackDepth
;
4233 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4236 /** \name Client attribute groups */
4238 struct gl_array_attrib Array
; /**< Vertex arrays */
4239 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4240 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4241 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4244 /** \name Other assorted state (not pushed/popped on attribute stack) */
4246 struct gl_pixelmaps PixelMaps
;
4248 struct gl_evaluators EvalMap
; /**< All evaluators */
4249 struct gl_feedback Feedback
; /**< Feedback */
4250 struct gl_selection Select
; /**< Selection */
4252 struct gl_program_state Program
; /**< general program state */
4253 struct gl_vertex_program_state VertexProgram
;
4254 struct gl_fragment_program_state FragmentProgram
;
4255 struct gl_geometry_program_state GeometryProgram
;
4256 struct gl_compute_program_state ComputeProgram
;
4257 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4259 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4260 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4263 * Current active shader pipeline state
4265 * Almost all internal users want ::_Shader instead of ::Shader. The
4266 * exceptions are bits of legacy GLSL API that do not know about separate
4269 * If a program is active via \c glUseProgram, this will point to
4272 * If a program pipeline is active via \c glBindProgramPipeline, this will
4273 * point to \c ::Pipeline.Current.
4275 * If neither a program nor a program pipeline is active, this will point to
4276 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4279 struct gl_pipeline_object
*_Shader
;
4281 struct gl_query_state Query
; /**< occlusion, timer queries */
4283 struct gl_transform_feedback_state TransformFeedback
;
4285 struct gl_perf_monitor_state PerfMonitor
;
4287 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4289 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4290 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4293 * Current GL_ARB_uniform_buffer_object binding referenced by
4294 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4296 struct gl_buffer_object
*UniformBuffer
;
4299 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4300 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4301 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4304 struct gl_uniform_buffer_binding
4305 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4308 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4311 struct gl_buffer_object
*AtomicBuffer
;
4314 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4317 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4320 * Array of atomic counter buffer binding points.
4322 struct gl_atomic_buffer_binding
4323 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4326 * Array of image units for ARB_shader_image_load_store.
4328 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4332 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4334 /* GL_EXT_framebuffer_object */
4335 struct gl_renderbuffer
*CurrentRenderbuffer
;
4337 GLenum ErrorValue
; /**< Last error code */
4340 * Recognize and silence repeated error debug messages in buggy apps.
4342 const char *ErrorDebugFmtString
;
4343 GLuint ErrorDebugCount
;
4345 /* GL_ARB_debug_output/GL_KHR_debug */
4347 struct gl_debug_state
*Debug
;
4349 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4350 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4351 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4353 struct gl_driver_flags DriverFlags
;
4355 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4357 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4359 /** \name Derived state */
4360 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4361 GLfloat _EyeZDir
[3];
4362 GLfloat _ModelViewInvScale
;
4363 GLboolean _NeedEyeCoords
;
4364 GLboolean _ForceEyeCoords
;
4366 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4368 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4370 /** \name For debugging/development only */
4372 GLboolean FirstTimeCurrent
;
4376 * False if this context was created without a config. This is needed
4377 * because the initial state of glDrawBuffers depends on this
4379 GLboolean HasConfig
;
4381 /** software compression/decompression supported or not */
4382 GLboolean Mesa_DXTn
;
4384 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4386 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4389 * \name Hooks for module contexts.
4391 * These will eventually live in the driver or elsewhere.
4394 void *swrast_context
;
4395 void *swsetup_context
;
4396 void *swtnl_context
;
4397 struct vbo_context
*vbo_context
;
4398 struct st_context
*st
;
4403 * \name NV_vdpau_interop
4406 const void *vdpDevice
;
4407 const void *vdpGetProcAddress
;
4408 struct set
*vdpSurfaces
;
4412 * Has this context observed a GPU reset in any context in the share group?
4414 * Once this field becomes true, it is never reset to false.
4416 GLboolean ShareGroupReset
;
4421 extern int MESA_VERBOSE
;
4422 extern int MESA_DEBUG_FLAGS
;
4423 # define MESA_FUNCTION __func__
4425 # define MESA_VERBOSE 0
4426 # define MESA_DEBUG_FLAGS 0
4427 # define MESA_FUNCTION "a function"
4431 /** The MESA_VERBOSE var is a bitmask of these flags */
4434 VERBOSE_VARRAY
= 0x0001,
4435 VERBOSE_TEXTURE
= 0x0002,
4436 VERBOSE_MATERIAL
= 0x0004,
4437 VERBOSE_PIPELINE
= 0x0008,
4438 VERBOSE_DRIVER
= 0x0010,
4439 VERBOSE_STATE
= 0x0020,
4440 VERBOSE_API
= 0x0040,
4441 VERBOSE_DISPLAY_LIST
= 0x0100,
4442 VERBOSE_LIGHTING
= 0x0200,
4443 VERBOSE_PRIMS
= 0x0400,
4444 VERBOSE_VERTS
= 0x0800,
4445 VERBOSE_DISASSEM
= 0x1000,
4446 VERBOSE_DRAW
= 0x2000,
4447 VERBOSE_SWAPBUFFERS
= 0x4000
4451 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4454 DEBUG_SILENT
= (1 << 0),
4455 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4456 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4457 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4461 _mesa_active_fragment_shader_has_atomic_ops(const struct gl_context
*ctx
)
4463 return ctx
->Shader
._CurrentFragmentProgram
!= NULL
&&
4464 ctx
->Shader
._CurrentFragmentProgram
->NumAtomicBuffers
> 0;
4471 #endif /* MTYPES_H */