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 "util/simple_list.h" /* struct simple_node */
47 #include "main/formats.h" /* MESA_FORMAT_COUNT */
56 * \name 64-bit extension of GLbitfield.
59 typedef GLuint64 GLbitfield64
;
61 /** Set a single bit */
62 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
63 /** Set all bits up to excluding bit b */
64 #define BITFIELD64_MASK(b) \
65 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
66 /** Set count bits starting from bit b */
67 #define BITFIELD64_RANGE(b, count) \
68 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
72 * \name Some forward type declarations
75 struct _mesa_HashTable
;
76 struct gl_attrib_node
;
77 struct gl_list_extensions
;
79 struct gl_program_cache
;
80 struct gl_texture_object
;
81 struct gl_debug_state
;
84 struct gl_uniform_storage
;
85 struct prog_instruction
;
86 struct gl_program_parameter_list
;
93 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
94 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
95 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
96 #define PRIM_UNKNOWN (PRIM_MAX + 2)
101 * Indexes for vertex program attributes.
102 * GL_NV_vertex_program aliases generic attributes over the conventional
103 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
104 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
105 * generic attributes are distinct/separate).
110 VERT_ATTRIB_WEIGHT
= 1,
111 VERT_ATTRIB_NORMAL
= 2,
112 VERT_ATTRIB_COLOR0
= 3,
113 VERT_ATTRIB_COLOR1
= 4,
115 VERT_ATTRIB_COLOR_INDEX
= 6,
116 VERT_ATTRIB_EDGEFLAG
= 7,
117 VERT_ATTRIB_TEX0
= 8,
118 VERT_ATTRIB_TEX1
= 9,
119 VERT_ATTRIB_TEX2
= 10,
120 VERT_ATTRIB_TEX3
= 11,
121 VERT_ATTRIB_TEX4
= 12,
122 VERT_ATTRIB_TEX5
= 13,
123 VERT_ATTRIB_TEX6
= 14,
124 VERT_ATTRIB_TEX7
= 15,
125 VERT_ATTRIB_POINT_SIZE
= 16,
126 VERT_ATTRIB_GENERIC0
= 17,
127 VERT_ATTRIB_GENERIC1
= 18,
128 VERT_ATTRIB_GENERIC2
= 19,
129 VERT_ATTRIB_GENERIC3
= 20,
130 VERT_ATTRIB_GENERIC4
= 21,
131 VERT_ATTRIB_GENERIC5
= 22,
132 VERT_ATTRIB_GENERIC6
= 23,
133 VERT_ATTRIB_GENERIC7
= 24,
134 VERT_ATTRIB_GENERIC8
= 25,
135 VERT_ATTRIB_GENERIC9
= 26,
136 VERT_ATTRIB_GENERIC10
= 27,
137 VERT_ATTRIB_GENERIC11
= 28,
138 VERT_ATTRIB_GENERIC12
= 29,
139 VERT_ATTRIB_GENERIC13
= 30,
140 VERT_ATTRIB_GENERIC14
= 31,
141 VERT_ATTRIB_GENERIC15
= 32,
146 * Symbolic constats to help iterating over
147 * specific blocks of vertex attributes.
150 * includes all fixed function attributes as well as
151 * the aliased GL_NV_vertex_program shader attributes.
153 * include the classic texture coordinate attributes.
154 * Is a subset of VERT_ATTRIB_FF.
155 * VERT_ATTRIB_GENERIC
156 * include the OpenGL 2.0+ GLSL generic shader attributes.
157 * These alias the generic GL_ARB_vertex_shader attributes.
159 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
160 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
162 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
163 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
165 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
166 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
169 * Bitflags for vertex attributes.
170 * These are used in bitfields in many places.
173 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
174 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
175 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
176 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
177 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
178 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
179 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
180 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
181 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
182 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
183 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
184 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
185 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
186 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
187 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
188 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
189 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
190 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
192 #define VERT_BIT(i) BITFIELD64_BIT(i)
193 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
195 #define VERT_BIT_FF(i) VERT_BIT(i)
196 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
197 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
198 #define VERT_BIT_TEX_ALL \
199 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
201 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
202 #define VERT_BIT_GENERIC_ALL \
203 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
208 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
209 * fragment shader inputs.
211 * Note that some of these values are not available to all pipeline stages.
213 * When this enum is updated, the following code must be updated too:
214 * - vertResults (in prog_print.c's arb_output_attrib_string())
215 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
216 * - _mesa_varying_slot_in_fs()
221 VARYING_SLOT_COL0
, /* COL0 and COL1 must be contiguous */
224 VARYING_SLOT_TEX0
, /* TEX0-TEX7 must be contiguous */
232 VARYING_SLOT_PSIZ
, /* Does not appear in FS */
233 VARYING_SLOT_BFC0
, /* Does not appear in FS */
234 VARYING_SLOT_BFC1
, /* Does not appear in FS */
235 VARYING_SLOT_EDGE
, /* Does not appear in FS */
236 VARYING_SLOT_CLIP_VERTEX
, /* Does not appear in FS */
237 VARYING_SLOT_CLIP_DIST0
,
238 VARYING_SLOT_CLIP_DIST1
,
239 VARYING_SLOT_PRIMITIVE_ID
, /* Does not appear in VS */
240 VARYING_SLOT_LAYER
, /* Appears as VS or GS output */
241 VARYING_SLOT_VIEWPORT
, /* Appears as VS or GS output */
242 VARYING_SLOT_FACE
, /* FS only */
243 VARYING_SLOT_PNTC
, /* FS only */
244 VARYING_SLOT_VAR0
, /* First generic varying slot */
245 VARYING_SLOT_MAX
= VARYING_SLOT_VAR0
+ MAX_VARYING
250 * Bitflags for varying slots.
253 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
254 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
255 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
256 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
257 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
258 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
259 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
260 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
261 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
262 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
263 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
264 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
265 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
266 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
267 MAX_TEXTURE_COORD_UNITS)
268 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
269 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
270 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
271 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
272 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
273 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
274 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
275 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
276 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
277 #define VARYING_BIT_VIEWPORT BITFIELD64_BIT(VARYING_SLOT_VIEWPORT)
278 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
279 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
280 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
284 * Determine if the given gl_varying_slot appears in the fragment shader.
286 static inline GLboolean
287 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
290 case VARYING_SLOT_PSIZ
:
291 case VARYING_SLOT_BFC0
:
292 case VARYING_SLOT_BFC1
:
293 case VARYING_SLOT_EDGE
:
294 case VARYING_SLOT_CLIP_VERTEX
:
295 case VARYING_SLOT_LAYER
:
304 * Fragment program results
308 FRAG_RESULT_DEPTH
= 0,
309 FRAG_RESULT_STENCIL
= 1,
310 /* If a single color should be written to all render targets, this
311 * register is written. No FRAG_RESULT_DATAn will be written.
313 FRAG_RESULT_COLOR
= 2,
314 FRAG_RESULT_SAMPLE_MASK
= 3,
316 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
317 * or ARB_fragment_program fragment.color[n]) color results. If
318 * any are written, FRAG_RESULT_COLOR will not be written.
320 FRAG_RESULT_DATA0
= 4,
321 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
326 * Indexes for all renderbuffers
330 /* the four standard color buffers */
338 /* optional aux buffer */
340 /* generic renderbuffers */
353 * Bit flags for all renderbuffers
355 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
356 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
357 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
358 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
359 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
360 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
361 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
362 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
363 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
364 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
365 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
366 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
367 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
368 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
369 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
370 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
371 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
372 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
373 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
376 * Mask of all the color buffer bits (but not accum).
378 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
379 BUFFER_BIT_BACK_LEFT | \
380 BUFFER_BIT_FRONT_RIGHT | \
381 BUFFER_BIT_BACK_RIGHT | \
383 BUFFER_BIT_COLOR0 | \
384 BUFFER_BIT_COLOR1 | \
385 BUFFER_BIT_COLOR2 | \
386 BUFFER_BIT_COLOR3 | \
387 BUFFER_BIT_COLOR4 | \
388 BUFFER_BIT_COLOR5 | \
389 BUFFER_BIT_COLOR6 | \
393 * Framebuffer configuration (aka visual / pixelformat)
394 * Note: some of these fields should be boolean, but it appears that
395 * code in drivers/dri/common/util.c requires int-sized fields.
401 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
402 GLuint doubleBufferMode
;
405 GLboolean haveAccumBuffer
;
406 GLboolean haveDepthBuffer
;
407 GLboolean haveStencilBuffer
;
409 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
410 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
411 GLint rgbBits
; /* total bits for rgb */
412 GLint indexBits
; /* total bits for colorindex */
414 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
422 /* EXT_visual_rating / GLX 1.2 */
425 /* EXT_visual_info / GLX 1.2 */
426 GLint transparentPixel
;
427 /* colors are floats scaled to ints */
428 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
429 GLint transparentIndex
;
431 /* ARB_multisample / SGIS_multisample */
435 /* SGIX_pbuffer / GLX 1.3 */
436 GLint maxPbufferWidth
;
437 GLint maxPbufferHeight
;
438 GLint maxPbufferPixels
;
439 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
440 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
442 /* OML_swap_method */
445 /* EXT_texture_from_pixmap */
446 GLint bindToTextureRgb
;
447 GLint bindToTextureRgba
;
448 GLint bindToMipmapTexture
;
449 GLint bindToTextureTargets
;
452 /* EXT_framebuffer_sRGB */
458 * \name Bit flags used for updating material values.
461 #define MAT_ATTRIB_FRONT_AMBIENT 0
462 #define MAT_ATTRIB_BACK_AMBIENT 1
463 #define MAT_ATTRIB_FRONT_DIFFUSE 2
464 #define MAT_ATTRIB_BACK_DIFFUSE 3
465 #define MAT_ATTRIB_FRONT_SPECULAR 4
466 #define MAT_ATTRIB_BACK_SPECULAR 5
467 #define MAT_ATTRIB_FRONT_EMISSION 6
468 #define MAT_ATTRIB_BACK_EMISSION 7
469 #define MAT_ATTRIB_FRONT_SHININESS 8
470 #define MAT_ATTRIB_BACK_SHININESS 9
471 #define MAT_ATTRIB_FRONT_INDEXES 10
472 #define MAT_ATTRIB_BACK_INDEXES 11
473 #define MAT_ATTRIB_MAX 12
475 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
476 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
477 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
478 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
479 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
480 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
482 #define MAT_INDEX_AMBIENT 0
483 #define MAT_INDEX_DIFFUSE 1
484 #define MAT_INDEX_SPECULAR 2
486 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
487 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
488 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
489 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
490 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
491 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
492 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
493 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
494 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
495 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
496 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
497 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
500 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
501 MAT_BIT_FRONT_AMBIENT | \
502 MAT_BIT_FRONT_DIFFUSE | \
503 MAT_BIT_FRONT_SPECULAR | \
504 MAT_BIT_FRONT_SHININESS | \
505 MAT_BIT_FRONT_INDEXES)
507 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
508 MAT_BIT_BACK_AMBIENT | \
509 MAT_BIT_BACK_DIFFUSE | \
510 MAT_BIT_BACK_SPECULAR | \
511 MAT_BIT_BACK_SHININESS | \
512 MAT_BIT_BACK_INDEXES)
514 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
523 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
531 #define LIGHT_SPOT 0x1
532 #define LIGHT_LOCAL_VIEWER 0x2
533 #define LIGHT_POSITIONAL 0x4
534 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
539 * Light source state.
543 struct gl_light
*next
; /**< double linked list with sentinel */
544 struct gl_light
*prev
;
546 GLfloat Ambient
[4]; /**< ambient color */
547 GLfloat Diffuse
[4]; /**< diffuse color */
548 GLfloat Specular
[4]; /**< specular color */
549 GLfloat EyePosition
[4]; /**< position in eye coordinates */
550 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
551 GLfloat SpotExponent
;
552 GLfloat SpotCutoff
; /**< in degrees */
553 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
554 GLfloat ConstantAttenuation
;
555 GLfloat LinearAttenuation
;
556 GLfloat QuadraticAttenuation
;
557 GLboolean Enabled
; /**< On/off flag */
560 * \name Derived fields
563 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
565 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
566 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
567 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
568 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
569 GLfloat _VP_inf_spot_attenuation
;
571 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
572 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
573 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
583 GLfloat Ambient
[4]; /**< ambient color */
584 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
585 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
586 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
587 * or GL_SEPARATE_SPECULAR_COLOR */
592 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
594 struct gl_accum_attrib
596 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
601 * Used for storing clear color, texture border color, etc.
602 * The float values are typically unclamped.
613 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
615 struct gl_colorbuffer_attrib
617 GLuint ClearIndex
; /**< Index for glClear */
618 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
619 GLuint IndexMask
; /**< Color index write mask */
620 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
622 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
625 * \name alpha testing
628 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
629 GLenum AlphaFunc
; /**< Alpha test function */
630 GLfloat AlphaRefUnclamped
;
631 GLclampf AlphaRef
; /**< Alpha reference value */
638 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
640 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
641 * control, only on the fixed-pointness of the render target.
642 * The query does however depend on fragment color clamping.
644 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
645 GLfloat BlendColor
[4]; /**< Blending color */
649 GLenum SrcRGB
; /**< RGB blend source term */
650 GLenum DstRGB
; /**< RGB blend dest term */
651 GLenum SrcA
; /**< Alpha blend source term */
652 GLenum DstA
; /**< Alpha blend dest term */
653 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
654 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
656 * Set if any blend factor uses SRC1. Computed at the time blend factors
659 GLboolean _UsesDualSrc
;
660 } Blend
[MAX_DRAW_BUFFERS
];
661 /** Are the blend func terms currently different for each buffer/target? */
662 GLboolean _BlendFuncPerBuffer
;
663 /** Are the blend equations currently different for each buffer/target? */
664 GLboolean _BlendEquationPerBuffer
;
671 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
672 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
673 GLenum LogicOp
; /**< Logic operator */
677 GLboolean DitherFlag
; /**< Dither enable flag */
679 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
680 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
681 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
683 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
688 * Current attribute group (GL_CURRENT_BIT).
690 struct gl_current_attrib
693 * \name Current vertex attributes.
694 * \note Values are valid only after FLUSH_VERTICES has been called.
695 * \note Index and Edgeflag current values are stored as floats in the
696 * SIX and SEVEN attribute slots.
698 /* we need double storage for this for vertex attrib 64bit */
699 GLfloat Attrib
[VERT_ATTRIB_MAX
][4*2]; /**< Position, color, texcoords, etc */
702 * \name Current raster position attributes (always valid).
703 * \note This set of attributes is very similar to the SWvertex struct.
706 GLfloat RasterPos
[4];
707 GLfloat RasterDistance
;
708 GLfloat RasterColor
[4];
709 GLfloat RasterSecondaryColor
[4];
710 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
711 GLboolean RasterPosValid
;
717 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
719 struct gl_depthbuffer_attrib
721 GLenum Func
; /**< Function for depth buffer compare */
722 GLclampd Clear
; /**< Value to clear depth buffer to */
723 GLboolean Test
; /**< Depth buffering enabled flag */
724 GLboolean Mask
; /**< Depth buffer writable? */
725 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
726 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
731 * Evaluator attribute group (GL_EVAL_BIT).
733 struct gl_eval_attrib
739 GLboolean Map1Color4
;
741 GLboolean Map1Normal
;
742 GLboolean Map1TextureCoord1
;
743 GLboolean Map1TextureCoord2
;
744 GLboolean Map1TextureCoord3
;
745 GLboolean Map1TextureCoord4
;
746 GLboolean Map1Vertex3
;
747 GLboolean Map1Vertex4
;
748 GLboolean Map2Color4
;
750 GLboolean Map2Normal
;
751 GLboolean Map2TextureCoord1
;
752 GLboolean Map2TextureCoord2
;
753 GLboolean Map2TextureCoord3
;
754 GLboolean Map2TextureCoord4
;
755 GLboolean Map2Vertex3
;
756 GLboolean Map2Vertex4
;
757 GLboolean AutoNormal
;
761 * \name Map Grid endpoints and divisions and calculated du values
765 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
766 GLint MapGrid2un
, MapGrid2vn
;
767 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
768 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
774 * Fog attribute group (GL_FOG_BIT).
778 GLboolean Enabled
; /**< Fog enabled flag */
779 GLboolean ColorSumEnabled
;
780 GLfloat ColorUnclamped
[4]; /**< Fog color */
781 GLfloat Color
[4]; /**< Fog color */
782 GLfloat Density
; /**< Density >= 0.0 */
783 GLfloat Start
; /**< Start distance in eye coords */
784 GLfloat End
; /**< End distance in eye coords */
785 GLfloat Index
; /**< Fog index */
786 GLenum Mode
; /**< Fog mode */
787 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
788 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
789 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
794 * Hint attribute group (GL_HINT_BIT).
796 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
798 struct gl_hint_attrib
800 GLenum PerspectiveCorrection
;
803 GLenum PolygonSmooth
;
805 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
806 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
807 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
812 * Lighting attribute group (GL_LIGHT_BIT).
814 struct gl_light_attrib
816 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
817 struct gl_lightmodel Model
; /**< Lighting model */
820 * Front and back material values.
821 * Note: must call FLUSH_VERTICES() before using.
823 struct gl_material Material
;
825 GLboolean Enabled
; /**< Lighting enabled flag */
826 GLboolean ColorMaterialEnabled
;
828 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
829 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
830 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
831 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
832 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
835 GLboolean _ClampVertexColor
;
836 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
839 * Derived state for optimizations:
842 GLboolean _NeedEyeCoords
;
843 GLboolean _NeedVertices
; /**< Use fast shader? */
844 struct gl_light EnabledList
; /**< List sentinel */
846 GLfloat _BaseColor
[2][3];
852 * Line attribute group (GL_LINE_BIT).
854 struct gl_line_attrib
856 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
857 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
858 GLushort StipplePattern
; /**< Stipple pattern */
859 GLint StippleFactor
; /**< Stipple repeat factor */
860 GLfloat Width
; /**< Line width */
865 * Display list attribute group (GL_LIST_BIT).
867 struct gl_list_attrib
874 * Multisample attribute group (GL_MULTISAMPLE_BIT).
876 struct gl_multisample_attrib
879 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
880 GLboolean SampleAlphaToCoverage
;
881 GLboolean SampleAlphaToOne
;
882 GLboolean SampleCoverage
;
883 GLboolean SampleCoverageInvert
;
884 GLboolean SampleShading
;
886 /* ARB_texture_multisample / GL3.2 additions */
887 GLboolean SampleMask
;
889 GLfloat SampleCoverageValue
;
890 GLfloat MinSampleShadingValue
;
892 /** The GL spec defines this as an array but >32x MSAA is madness */
893 GLbitfield SampleMaskValue
;
898 * A pixelmap (see glPixelMap)
903 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
908 * Collection of all pixelmaps
912 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
913 struct gl_pixelmap GtoG
;
914 struct gl_pixelmap BtoB
;
915 struct gl_pixelmap AtoA
;
916 struct gl_pixelmap ItoR
;
917 struct gl_pixelmap ItoG
;
918 struct gl_pixelmap ItoB
;
919 struct gl_pixelmap ItoA
;
920 struct gl_pixelmap ItoI
;
921 struct gl_pixelmap StoS
;
926 * Pixel attribute group (GL_PIXEL_MODE_BIT).
928 struct gl_pixel_attrib
930 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
932 /*--- Begin Pixel Transfer State ---*/
933 /* Fields are in the order in which they're applied... */
935 /** Scale & Bias (index shift, offset) */
937 GLfloat RedBias
, RedScale
;
938 GLfloat GreenBias
, GreenScale
;
939 GLfloat BlueBias
, BlueScale
;
940 GLfloat AlphaBias
, AlphaScale
;
941 GLfloat DepthBias
, DepthScale
;
942 GLint IndexShift
, IndexOffset
;
946 /* Note: actual pixel maps are not part of this attrib group */
947 GLboolean MapColorFlag
;
948 GLboolean MapStencilFlag
;
950 /*--- End Pixel Transfer State ---*/
953 GLfloat ZoomX
, ZoomY
;
958 * Point attribute group (GL_POINT_BIT).
960 struct gl_point_attrib
962 GLfloat Size
; /**< User-specified point size */
963 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
964 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
965 GLfloat Threshold
; /**< GL_EXT_point_parameters */
966 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
967 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
968 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
969 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
970 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
971 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
976 * Polygon attribute group (GL_POLYGON_BIT).
978 struct gl_polygon_attrib
980 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
981 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
982 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
983 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
984 GLboolean CullFlag
; /**< Culling on/off flag */
985 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
986 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
987 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
988 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
989 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
990 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
991 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
992 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
993 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
998 * Scissor attributes (GL_SCISSOR_BIT).
1000 struct gl_scissor_rect
1002 GLint X
, Y
; /**< Lower left corner of box */
1003 GLsizei Width
, Height
; /**< Size of box */
1005 struct gl_scissor_attrib
1007 GLbitfield EnableFlags
; /**< Scissor test enabled? */
1008 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
1013 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1015 * Three sets of stencil data are tracked so that OpenGL 2.0,
1016 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1017 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1018 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1019 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1020 * GL_EXT_stencil_two_side GL_BACK state.
1022 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1023 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1025 * The derived value \c _TestTwoSide is set when the front-face and back-face
1026 * stencil state are different.
1028 struct gl_stencil_attrib
1030 GLboolean Enabled
; /**< Enabled flag */
1031 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1032 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1033 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1034 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1035 GLboolean _TestTwoSide
;
1036 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1037 GLenum Function
[3]; /**< Stencil function */
1038 GLenum FailFunc
[3]; /**< Fail function */
1039 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1040 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1041 GLint Ref
[3]; /**< Reference value */
1042 GLuint ValueMask
[3]; /**< Value mask */
1043 GLuint WriteMask
[3]; /**< Write mask */
1044 GLuint Clear
; /**< Clear value */
1049 * An index for each type of texture object. These correspond to the GL
1050 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1051 * Note: the order is from highest priority to lowest priority.
1055 TEXTURE_2D_MULTISAMPLE_INDEX
,
1056 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1057 TEXTURE_CUBE_ARRAY_INDEX
,
1058 TEXTURE_BUFFER_INDEX
,
1059 TEXTURE_2D_ARRAY_INDEX
,
1060 TEXTURE_1D_ARRAY_INDEX
,
1061 TEXTURE_EXTERNAL_INDEX
,
1072 * Bit flags for each type of texture object
1075 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1076 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1077 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1078 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1079 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1080 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1081 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1082 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1083 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1084 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1085 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1086 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1091 * Texture image state. Drivers will typically create a subclass of this
1092 * with extra fields for memory buffers, etc.
1094 struct gl_texture_image
1096 GLint InternalFormat
; /**< Internal format as given by the user */
1097 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1098 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1099 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1100 * GL_DEPTH_STENCIL_EXT only. Used for
1101 * choosing TexEnv arithmetic.
1103 mesa_format TexFormat
; /**< The actual texture memory format */
1105 GLuint Border
; /**< 0 or 1 */
1106 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1107 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1108 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1109 GLuint Width2
; /**< = Width - 2*Border */
1110 GLuint Height2
; /**< = Height - 2*Border */
1111 GLuint Depth2
; /**< = Depth - 2*Border */
1112 GLuint WidthLog2
; /**< = log2(Width2) */
1113 GLuint HeightLog2
; /**< = log2(Height2) */
1114 GLuint DepthLog2
; /**< = log2(Depth2) */
1115 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1116 levels, computed from the dimensions */
1118 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1119 GLuint Level
; /**< Which mipmap level am I? */
1120 /** Cube map face: index into gl_texture_object::Image[] array */
1123 /** GL_ARB_texture_multisample */
1124 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1125 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1130 * Indexes for cube map faces.
1145 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1146 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1148 struct gl_sampler_object
1152 GLchar
*Label
; /**< GL_KHR_debug */
1154 GLenum WrapS
; /**< S-axis texture image wrap mode */
1155 GLenum WrapT
; /**< T-axis texture image wrap mode */
1156 GLenum WrapR
; /**< R-axis texture image wrap mode */
1157 GLenum MinFilter
; /**< minification filter */
1158 GLenum MagFilter
; /**< magnification filter */
1159 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1160 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1161 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1162 GLfloat LodBias
; /**< OpenGL 1.4 */
1163 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1164 GLenum CompareMode
; /**< GL_ARB_shadow */
1165 GLenum CompareFunc
; /**< GL_ARB_shadow */
1166 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1167 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1172 * Texture object state. Contains the array of mipmap images, border color,
1173 * wrap modes, filter modes, and shadow/texcompare state.
1175 struct gl_texture_object
1177 mtx_t Mutex
; /**< for thread safety */
1178 GLint RefCount
; /**< reference count */
1179 GLuint Name
; /**< the user-visible texture object ID */
1180 GLchar
*Label
; /**< GL_KHR_debug */
1181 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1182 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
1183 Only valid when Target is valid. */
1185 struct gl_sampler_object Sampler
;
1187 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1188 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
1190 GLfloat Priority
; /**< in [0,1] */
1191 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1192 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1193 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1194 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1195 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1196 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1197 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1198 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1199 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1200 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1201 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1202 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1203 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1204 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1206 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1207 GLboolean _IsFloat
; /**< GL_OES_float_texture */
1208 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
1210 GLuint MinLevel
; /**< GL_ARB_texture_view */
1211 GLuint MinLayer
; /**< GL_ARB_texture_view */
1212 GLuint NumLevels
; /**< GL_ARB_texture_view */
1213 GLuint NumLayers
; /**< GL_ARB_texture_view */
1215 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1216 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1218 /** GL_ARB_texture_buffer_object */
1219 struct gl_buffer_object
*BufferObject
;
1220 GLenum BufferObjectFormat
;
1221 /** Equivalent Mesa format for BufferObjectFormat. */
1222 mesa_format _BufferObjectFormat
;
1223 /** GL_ARB_texture_buffer_range */
1224 GLintptr BufferOffset
;
1225 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1227 /** GL_OES_EGL_image_external */
1228 GLint RequiredTextureImageUnits
;
1230 /** GL_ARB_shader_image_load_store */
1231 GLenum ImageFormatCompatibilityType
;
1235 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1236 #define MAX_COMBINER_TERMS 4
1240 * Texture combine environment state.
1242 struct gl_tex_env_combine_state
1244 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1245 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1246 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1247 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1248 GLenum SourceA
[MAX_COMBINER_TERMS
];
1249 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1250 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1251 GLenum OperandA
[MAX_COMBINER_TERMS
];
1252 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1253 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1254 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1255 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1260 * TexGenEnabled flags.
1267 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1272 * Bit flag versions of the corresponding GL_ constants.
1275 #define TEXGEN_SPHERE_MAP 0x1
1276 #define TEXGEN_OBJ_LINEAR 0x2
1277 #define TEXGEN_EYE_LINEAR 0x4
1278 #define TEXGEN_REFLECTION_MAP_NV 0x8
1279 #define TEXGEN_NORMAL_MAP_NV 0x10
1281 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1282 TEXGEN_REFLECTION_MAP_NV | \
1283 TEXGEN_NORMAL_MAP_NV)
1284 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1285 TEXGEN_REFLECTION_MAP_NV | \
1286 TEXGEN_NORMAL_MAP_NV | \
1292 /** Tex-gen enabled for texture unit? */
1293 #define ENABLE_TEXGEN(unit) (1 << (unit))
1295 /** Non-identity texture matrix for texture unit? */
1296 #define ENABLE_TEXMAT(unit) (1 << (unit))
1300 * Texture coord generation state.
1304 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1305 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1306 GLfloat ObjectPlane
[4];
1307 GLfloat EyePlane
[4];
1312 * Texture unit state. Contains enable flags, texture environment/function/
1313 * combiners, texgen state, and pointers to current texture objects.
1315 struct gl_texture_unit
1317 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1319 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1320 GLclampf EnvColor
[4];
1321 GLfloat EnvColorUnclamped
[4];
1323 struct gl_texgen GenS
;
1324 struct gl_texgen GenT
;
1325 struct gl_texgen GenR
;
1326 struct gl_texgen GenQ
;
1327 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1328 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1330 GLfloat LodBias
; /**< for biasing mipmap levels */
1332 /** Texture targets that have a non-default texture bound */
1333 GLbitfield _BoundTextures
;
1335 /** Current sampler object (GL_ARB_sampler_objects) */
1336 struct gl_sampler_object
*Sampler
;
1339 * \name GL_EXT_texture_env_combine
1341 struct gl_tex_env_combine_state Combine
;
1344 * Derived state based on \c EnvMode and the \c BaseFormat of the
1345 * currently enabled texture.
1347 struct gl_tex_env_combine_state _EnvMode
;
1350 * Currently enabled combiner state. This will point to either
1351 * \c Combine or \c _EnvMode.
1353 struct gl_tex_env_combine_state
*_CurrentCombine
;
1355 /** Current texture object pointers */
1356 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1358 /** Points to highest priority, complete and enabled texture object */
1359 struct gl_texture_object
*_Current
;
1365 * Texture attribute group (GL_TEXTURE_BIT).
1367 struct gl_texture_attrib
1369 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1371 /** GL_ARB_seamless_cubemap */
1372 GLboolean CubeMapSeamless
;
1374 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1376 /** GL_ARB_texture_buffer_object */
1377 struct gl_buffer_object
*BufferObject
;
1379 /** Texture coord units/sets used for fragment texturing */
1380 GLbitfield _EnabledCoordUnits
;
1382 /** Texture coord units that have texgen enabled */
1383 GLbitfield _TexGenEnabled
;
1385 /** Texture coord units that have non-identity matrices */
1386 GLbitfield _TexMatEnabled
;
1388 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1389 GLbitfield _GenFlags
;
1391 /** Largest index of a texture unit with _Current != NULL. */
1392 GLint _MaxEnabledTexImageUnit
;
1394 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1395 GLint NumCurrentTexUsed
;
1397 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1402 * Data structure representing a single clip plane (e.g. one of the elements
1403 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1405 typedef GLfloat gl_clip_plane
[4];
1409 * Transformation attribute group (GL_TRANSFORM_BIT).
1411 struct gl_transform_attrib
1413 GLenum MatrixMode
; /**< Matrix mode */
1414 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1415 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1416 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1417 GLboolean Normalize
; /**< Normalize all normals? */
1418 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1419 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1420 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1421 /** GL_ARB_clip_control */
1422 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1423 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1428 * Viewport attribute group (GL_VIEWPORT_BIT).
1430 struct gl_viewport_attrib
1432 GLfloat X
, Y
; /**< position */
1433 GLfloat Width
, Height
; /**< size */
1434 GLdouble Near
, Far
; /**< Depth buffer range */
1443 } gl_map_buffer_index
;
1447 * Fields describing a mapped buffer range.
1449 struct gl_buffer_mapping
{
1450 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1451 GLvoid
*Pointer
; /**< User-space address of mapping */
1452 GLintptr Offset
; /**< Mapped offset */
1453 GLsizeiptr Length
; /**< Mapped length */
1458 * Usages we've seen for a buffer object.
1461 USAGE_UNIFORM_BUFFER
= 0x1,
1462 USAGE_TEXTURE_BUFFER
= 0x2,
1463 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1468 * GL_ARB_vertex/pixel_buffer_object buffer object
1470 struct gl_buffer_object
1475 GLchar
*Label
; /**< GL_KHR_debug */
1476 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1477 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1478 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1479 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1480 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1481 GLboolean Written
; /**< Ever written to? (for debugging) */
1482 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1483 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1484 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1486 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1491 * Client pixel packing/unpacking attributes
1493 struct gl_pixelstore_attrib
1501 GLboolean SwapBytes
;
1503 GLboolean Invert
; /**< GL_MESA_pack_invert */
1504 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1505 GLint CompressedBlockHeight
;
1506 GLint CompressedBlockDepth
;
1507 GLint CompressedBlockSize
;
1508 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1513 * Client vertex array attributes
1515 struct gl_client_array
1517 GLint Size
; /**< components per element (1,2,3,4) */
1518 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1519 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1520 GLsizei Stride
; /**< user-specified stride */
1521 GLsizei StrideB
; /**< actual stride in bytes */
1522 GLuint _ElementSize
; /**< size of each element in bytes */
1523 const GLubyte
*Ptr
; /**< Points to array data */
1524 GLboolean Enabled
; /**< Enabled flag is a boolean */
1525 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1526 GLboolean Integer
; /**< Integer-valued? */
1527 GLboolean Doubles
; /**< double precision values are not converted to floats */
1528 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1530 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1535 * Vertex attribute array as seen by the client.
1537 * Contains the size, type, format and normalization flag,
1538 * along with the index of a vertex buffer binding point.
1540 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1541 * and is only present for backwards compatibility reasons.
1542 * Rendering always uses VERTEX_BINDING_STRIDE.
1543 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1544 * and VERTEX_BINDING_STRIDE to the same value, while
1545 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1547 struct gl_vertex_attrib_array
1549 GLint Size
; /**< Components per element (1,2,3,4) */
1550 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1551 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1552 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1553 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1554 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1555 GLboolean Enabled
; /**< Whether the array is enabled */
1556 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1557 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1558 GLboolean Doubles
; /**< double precision values are not converted to floats */
1559 GLuint _ElementSize
; /**< Size of each element in bytes */
1560 GLuint VertexBinding
; /**< Vertex buffer binding */
1565 * This describes the buffer object used for a vertex array (or
1566 * multiple vertex arrays). If BufferObj points to the default/null
1567 * buffer object, then the vertex array lives in user memory and not a VBO.
1569 struct gl_vertex_buffer_binding
1571 GLintptr Offset
; /**< User-specified offset */
1572 GLsizei Stride
; /**< User-specified stride */
1573 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1574 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1575 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1580 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1581 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1584 struct gl_vertex_array_object
1586 /** Name of the VAO as received from glGenVertexArray. */
1591 GLchar
*Label
; /**< GL_KHR_debug */
1596 * Does the VAO use ARB semantics or Apple semantics?
1598 * There are several ways in which ARB_vertex_array_object and
1599 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1602 * - ARB VAOs require that all array data be sourced from vertex buffer
1603 * objects, but Apple VAOs do not.
1605 * - ARB VAOs require that names come from GenVertexArrays.
1607 * This flag notes which behavior governs this VAO.
1609 GLboolean ARBsemantics
;
1612 * Has this array object been bound?
1614 GLboolean EverBound
;
1617 * Derived vertex attribute arrays
1619 * This is a legacy data structure created from gl_vertex_attrib_array and
1620 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1622 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1624 /** Vertex attribute arrays */
1625 struct gl_vertex_attrib_array VertexAttrib
[VERT_ATTRIB_MAX
];
1627 /** Vertex buffer bindings */
1628 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1630 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1631 GLbitfield64 _Enabled
;
1633 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1634 GLbitfield64 NewArrays
;
1636 /** The index buffer (also known as the element array buffer in OpenGL). */
1637 struct gl_buffer_object
*IndexBufferObj
;
1641 /** Used to signal when transitioning from one kind of drawing method
1645 DRAW_NONE
, /**< Initial value only */
1652 * Enum for the OpenGL APIs we know about and may support.
1654 * NOTE: This must match the api_enum table in
1655 * src/mesa/main/get_hash_generator.py
1659 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1663 API_OPENGL_LAST
= API_OPENGL_CORE
1667 * Vertex array state
1669 struct gl_array_attrib
1671 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1672 struct gl_vertex_array_object
*VAO
;
1674 /** The default vertex array object */
1675 struct gl_vertex_array_object
*DefaultVAO
;
1677 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1678 struct _mesa_HashTable
*Objects
;
1680 GLint ActiveTexture
; /**< Client Active Texture */
1681 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1682 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1685 * \name Primitive restart controls
1687 * Primitive restart is enabled if either \c PrimitiveRestart or
1688 * \c PrimitiveRestartFixedIndex is set.
1691 GLboolean PrimitiveRestart
;
1692 GLboolean PrimitiveRestartFixedIndex
;
1693 GLboolean _PrimitiveRestart
;
1694 GLuint RestartIndex
;
1697 /** One of the DRAW_xxx flags, not consumed by drivers */
1698 gl_draw_method DrawMethod
;
1700 /* GL_ARB_vertex_buffer_object */
1701 struct gl_buffer_object
*ArrayBufferObj
;
1704 * Vertex arrays as consumed by a driver.
1705 * The array pointer is set up only by the VBO module.
1707 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1709 /** Legal array datatypes and the API for which they have been computed */
1710 GLbitfield LegalTypesMask
;
1711 gl_api LegalTypesMaskAPI
;
1716 * Feedback buffer state
1721 GLbitfield _Mask
; /**< FB_* bits */
1729 * Selection buffer state
1733 GLuint
*Buffer
; /**< selection buffer */
1734 GLuint BufferSize
; /**< size of the selection buffer */
1735 GLuint BufferCount
; /**< number of values in the selection buffer */
1736 GLuint Hits
; /**< number of records in the selection buffer */
1737 GLuint NameStackDepth
; /**< name stack depth */
1738 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1739 GLboolean HitFlag
; /**< hit flag */
1740 GLfloat HitMinZ
; /**< minimum hit depth */
1741 GLfloat HitMaxZ
; /**< maximum hit depth */
1746 * 1-D Evaluator control points
1750 GLuint Order
; /**< Number of control points */
1751 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1752 GLfloat
*Points
; /**< Points to contiguous control points */
1757 * 2-D Evaluator control points
1761 GLuint Uorder
; /**< Number of control points in U dimension */
1762 GLuint Vorder
; /**< Number of control points in V dimension */
1765 GLfloat
*Points
; /**< Points to contiguous control points */
1770 * All evaluator control point state
1772 struct gl_evaluators
1778 struct gl_1d_map Map1Vertex3
;
1779 struct gl_1d_map Map1Vertex4
;
1780 struct gl_1d_map Map1Index
;
1781 struct gl_1d_map Map1Color4
;
1782 struct gl_1d_map Map1Normal
;
1783 struct gl_1d_map Map1Texture1
;
1784 struct gl_1d_map Map1Texture2
;
1785 struct gl_1d_map Map1Texture3
;
1786 struct gl_1d_map Map1Texture4
;
1793 struct gl_2d_map Map2Vertex3
;
1794 struct gl_2d_map Map2Vertex4
;
1795 struct gl_2d_map Map2Index
;
1796 struct gl_2d_map Map2Color4
;
1797 struct gl_2d_map Map2Normal
;
1798 struct gl_2d_map Map2Texture1
;
1799 struct gl_2d_map Map2Texture2
;
1800 struct gl_2d_map Map2Texture3
;
1801 struct gl_2d_map Map2Texture4
;
1806 struct gl_transform_feedback_varying_info
1815 * Per-output info vertex shaders for transform feedback.
1817 struct gl_transform_feedback_output
1819 unsigned OutputRegister
;
1820 unsigned OutputBuffer
;
1821 unsigned NumComponents
;
1824 /** offset (in DWORDs) of this output within the interleaved structure */
1828 * Offset into the output register of the data to output. For example,
1829 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1830 * offset is in the y and z components of the output register.
1832 unsigned ComponentOffset
;
1836 /** Post-link transform feedback info. */
1837 struct gl_transform_feedback_info
1839 unsigned NumOutputs
;
1842 * Number of transform feedback buffers in use by this program.
1844 unsigned NumBuffers
;
1846 struct gl_transform_feedback_output
*Outputs
;
1848 /** Transform feedback varyings used for the linking of this shader program.
1850 * Use for glGetTransformFeedbackVarying().
1852 struct gl_transform_feedback_varying_info
*Varyings
;
1856 * Total number of components stored in each buffer. This may be used by
1857 * hardware back-ends to determine the correct stride when interleaving
1858 * multiple transform feedback outputs in the same buffer.
1860 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1865 * Transform feedback object state
1867 struct gl_transform_feedback_object
1869 GLuint Name
; /**< AKA the object ID */
1871 GLchar
*Label
; /**< GL_KHR_debug */
1872 GLboolean Active
; /**< Is transform feedback enabled? */
1873 GLboolean Paused
; /**< Is transform feedback paused? */
1874 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1876 GLboolean EverBound
; /**< Has this object been bound? */
1879 * GLES: if Active is true, remaining number of primitives which can be
1880 * rendered without overflow. This is necessary to track because GLES
1881 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1882 * glDrawArraysInstanced would overflow transform feedback buffers.
1883 * Undefined if Active is false.
1885 * Not tracked for desktop GL since it's unnecessary.
1887 unsigned GlesRemainingPrims
;
1890 * The shader program active when BeginTransformFeedback() was called.
1891 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1892 * where stage is the pipeline stage that is the source of data for
1893 * transform feedback.
1895 struct gl_shader_program
*shader_program
;
1897 /** The feedback buffers */
1898 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1899 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1901 /** Start of feedback data in dest buffer */
1902 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1905 * Max data to put into dest buffer (in bytes). Computed based on
1906 * RequestedSize and the actual size of the buffer.
1908 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1911 * Size that was specified when the buffer was bound. If the buffer was
1912 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1915 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1920 * Context state for transform feedback.
1922 struct gl_transform_feedback_state
1924 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1926 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1927 struct gl_buffer_object
*CurrentBuffer
;
1929 /** The table of all transform feedback objects */
1930 struct _mesa_HashTable
*Objects
;
1932 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1933 struct gl_transform_feedback_object
*CurrentObject
;
1935 /** The default xform-fb object (Name==0) */
1936 struct gl_transform_feedback_object
*DefaultObject
;
1941 * A "performance monitor" as described in AMD_performance_monitor.
1943 struct gl_perf_monitor_object
1947 /** True if the monitor is currently active (Begin called but not End). */
1951 * True if the monitor has ended.
1953 * This is distinct from !Active because it may never have began.
1958 * A list of groups with currently active counters.
1960 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1962 unsigned *ActiveGroups
;
1965 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1967 * Checking whether counter 'c' in group 'g' is active can be done via:
1969 * BITSET_TEST(ActiveCounters[g], c)
1971 GLuint
**ActiveCounters
;
1975 union gl_perf_monitor_counter_value
1983 struct gl_perf_monitor_counter
1985 /** Human readable name for the counter. */
1989 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1990 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1994 /** Minimum counter value. */
1995 union gl_perf_monitor_counter_value Minimum
;
1997 /** Maximum counter value. */
1998 union gl_perf_monitor_counter_value Maximum
;
2002 struct gl_perf_monitor_group
2004 /** Human readable name for the group. */
2008 * Maximum number of counters in this group which can be active at the
2011 GLuint MaxActiveCounters
;
2013 /** Array of counters within this group. */
2014 const struct gl_perf_monitor_counter
*Counters
;
2020 * Context state for AMD_performance_monitor.
2022 struct gl_perf_monitor_state
2024 /** Array of performance monitor groups (indexed by group ID) */
2025 const struct gl_perf_monitor_group
*Groups
;
2028 /** The table of all performance monitors. */
2029 struct _mesa_HashTable
*Monitors
;
2034 * Names of the various vertex/fragment program register files, etc.
2036 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
2037 * All values should fit in a 4-bit field.
2039 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
2040 * considered to be "uniform" variables since they can only be set outside
2041 * glBegin/End. They're also all stored in the same Parameters array.
2045 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
2046 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
2047 PROGRAM_INPUT
, /**< machine->Inputs[] */
2048 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
2049 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
2050 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
2051 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
2052 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
2053 PROGRAM_ADDRESS
, /**< machine->AddressReg */
2054 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
2055 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
2056 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
2062 * \brief Layout qualifiers for gl_FragDepth.
2064 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
2065 * a layout qualifier.
2067 * \see enum ir_depth_layout
2069 enum gl_frag_depth_layout
2071 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
2072 FRAG_DEPTH_LAYOUT_ANY
,
2073 FRAG_DEPTH_LAYOUT_GREATER
,
2074 FRAG_DEPTH_LAYOUT_LESS
,
2075 FRAG_DEPTH_LAYOUT_UNCHANGED
2080 * Base class for any kind of program object
2086 GLubyte
*String
; /**< Null-terminated program text */
2088 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2089 GLenum Format
; /**< String encoding format */
2091 struct prog_instruction
*Instructions
;
2093 struct nir_shader
*nir
;
2095 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
2096 GLbitfield64 DoubleInputsRead
; /**< Bitmask of which input regs are read and are doubles */
2097 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
2098 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
2099 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
2100 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
2101 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
2102 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
2103 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
2105 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
2108 * For vertex and geometry shaders, true if the program uses the
2109 * gl_ClipDistance output. Ignored for fragment shaders.
2111 GLboolean UsesClipDistanceOut
;
2114 /** Named parameters, constants, etc. from program text */
2115 struct gl_program_parameter_list
*Parameters
;
2118 * Local parameters used by the program.
2120 * It's dynamically allocated because it is rarely used (just
2121 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
2124 GLfloat (*LocalParams
)[4];
2126 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2127 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2129 /** Bitmask of which register files are read/written with indirect
2130 * addressing. Mask of (1 << PROGRAM_x) bits.
2132 GLbitfield IndirectRegisterFiles
;
2134 /** Logical counts */
2136 GLuint NumInstructions
;
2137 GLuint NumTemporaries
;
2138 GLuint NumParameters
;
2139 GLuint NumAttributes
;
2140 GLuint NumAddressRegs
;
2141 GLuint NumAluInstructions
;
2142 GLuint NumTexInstructions
;
2143 GLuint NumTexIndirections
;
2145 /** Native, actual h/w counts */
2147 GLuint NumNativeInstructions
;
2148 GLuint NumNativeTemporaries
;
2149 GLuint NumNativeParameters
;
2150 GLuint NumNativeAttributes
;
2151 GLuint NumNativeAddressRegs
;
2152 GLuint NumNativeAluInstructions
;
2153 GLuint NumNativeTexInstructions
;
2154 GLuint NumNativeTexIndirections
;
2159 /** Vertex program object */
2160 struct gl_vertex_program
2162 struct gl_program Base
; /**< base class */
2163 GLboolean IsPositionInvariant
;
2167 /** Geometry program object */
2168 struct gl_geometry_program
2170 struct gl_program Base
; /**< base class */
2175 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2176 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2177 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2178 bool UsesEndPrimitive
;
2183 /** Fragment program object */
2184 struct gl_fragment_program
2186 struct gl_program Base
; /**< base class */
2187 GLboolean UsesKill
; /**< shader uses KIL instruction */
2188 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
2189 GLboolean OriginUpperLeft
;
2190 GLboolean PixelCenterInteger
;
2191 enum gl_frag_depth_layout FragDepthLayout
;
2194 * GLSL interpolation qualifier associated with each fragment shader input.
2195 * For inputs that do not have an interpolation qualifier specified in
2196 * GLSL, the value is INTERP_QUALIFIER_NONE.
2198 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
2201 * Bitfield indicating, for each fragment shader input, 1 if that input
2202 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2204 GLbitfield64 IsCentroid
;
2207 * Bitfield indicating, for each fragment shader input, 1 if that input
2208 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2210 GLbitfield64 IsSample
;
2214 /** Compute program object */
2215 struct gl_compute_program
2217 struct gl_program Base
; /**< base class */
2220 * Size specified using local_size_{x,y,z}.
2222 unsigned LocalSize
[3];
2227 * State common to vertex and fragment programs.
2229 struct gl_program_state
2231 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2232 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2237 * Context state for vertex programs.
2239 struct gl_vertex_program_state
2241 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2242 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2243 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2244 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2245 /** Computed two sided lighting for fixed function/programs. */
2246 GLboolean _TwoSideEnabled
;
2247 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2249 /** Currently enabled and valid vertex program (including internal
2250 * programs, user-defined vertex programs and GLSL vertex shaders).
2251 * This is the program we must use when rendering.
2253 struct gl_vertex_program
*_Current
;
2255 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2257 /** Should fixed-function T&L be implemented with a vertex prog? */
2258 GLboolean _MaintainTnlProgram
;
2260 /** Program to emulate fixed-function T&L (see above) */
2261 struct gl_vertex_program
*_TnlProgram
;
2263 /** Cache of fixed-function programs */
2264 struct gl_program_cache
*Cache
;
2266 GLboolean _Overriden
;
2271 * Context state for geometry programs.
2273 struct gl_geometry_program_state
2275 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2276 GLboolean _Enabled
; /**< Enabled and valid program? */
2277 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2279 /** Currently enabled and valid program (including internal programs
2280 * and compiled shader programs).
2282 struct gl_geometry_program
*_Current
;
2284 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2288 * Context state for fragment programs.
2290 struct gl_fragment_program_state
2292 GLboolean Enabled
; /**< User-set fragment program enable flag */
2293 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2294 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2296 /** Currently enabled and valid fragment program (including internal
2297 * programs, user-defined fragment programs and GLSL fragment shaders).
2298 * This is the program we must use when rendering.
2300 struct gl_fragment_program
*_Current
;
2302 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2304 /** Should fixed-function texturing be implemented with a fragment prog? */
2305 GLboolean _MaintainTexEnvProgram
;
2307 /** Program to emulate fixed-function texture env/combine (see above) */
2308 struct gl_fragment_program
*_TexEnvProgram
;
2310 /** Cache of fixed-function programs */
2311 struct gl_program_cache
*Cache
;
2316 * Context state for compute programs.
2318 struct gl_compute_program_state
2320 struct gl_compute_program
*Current
; /**< user-bound compute program */
2322 /** Currently enabled and valid program (including internal programs
2323 * and compiled shader programs).
2325 struct gl_compute_program
*_Current
;
2330 * ATI_fragment_shader runtime state
2332 #define ATI_FS_INPUT_PRIMARY 0
2333 #define ATI_FS_INPUT_SECONDARY 1
2335 struct atifs_instruction
;
2336 struct atifs_setupinst
;
2339 * ATI fragment shader
2341 struct ati_fragment_shader
2345 struct atifs_instruction
*Instructions
[2];
2346 struct atifs_setupinst
*SetupInst
[2];
2347 GLfloat Constants
[8][4];
2348 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2349 GLubyte numArithInstr
[2];
2350 GLubyte regsAssigned
[2];
2351 GLubyte NumPasses
; /**< 1 or 2 */
2353 GLubyte last_optype
;
2354 GLboolean interpinp1
;
2360 * Context state for GL_ATI_fragment_shader
2362 struct gl_ati_fragment_shader_state
2365 GLboolean _Enabled
; /**< enabled and valid shader? */
2366 GLboolean Compiling
;
2367 GLfloat GlobalConstants
[8][4];
2368 struct ati_fragment_shader
*Current
;
2373 * A GLSL vertex or fragment shader object.
2377 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2378 * Must be the first field.
2381 gl_shader_stage Stage
;
2382 GLuint Name
; /**< AKA the handle */
2383 GLint RefCount
; /**< Reference count */
2384 GLchar
*Label
; /**< GL_KHR_debug */
2385 GLboolean DeletePending
;
2386 GLboolean CompileStatus
;
2387 bool IsES
; /**< True if this shader uses GLSL ES */
2389 GLuint SourceChecksum
; /**< for debug/logging purposes */
2390 const GLchar
*Source
; /**< Source code string */
2392 struct gl_program
*Program
; /**< Post-compile assembly code */
2395 unsigned Version
; /**< GLSL version used for linking */
2398 * \name Sampler tracking
2400 * \note Each of these fields is only set post-linking.
2403 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2404 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2405 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2409 * Map from sampler unit to texture unit (set by glUniform1i())
2411 * A sampler unit is associated with each sampler uniform by the linker.
2412 * The sampler unit associated with each uniform is stored in the
2413 * \c gl_uniform_storage::sampler field.
2415 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2416 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2417 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2420 * Number of default uniform block components used by this shader.
2422 * This field is only set post-linking.
2424 unsigned num_uniform_components
;
2427 * Number of combined uniform components used by this shader.
2429 * This field is only set post-linking. It is the sum of the uniform block
2430 * sizes divided by sizeof(float), and num_uniform_compoennts.
2432 unsigned num_combined_uniform_components
;
2435 * This shader's uniform block information.
2437 * These fields are only set post-linking.
2439 unsigned NumUniformBlocks
;
2440 struct gl_uniform_block
*UniformBlocks
;
2442 struct exec_list
*ir
;
2443 struct glsl_symbol_table
*symbols
;
2445 bool uses_builtin_functions
;
2446 bool uses_gl_fragcoord
;
2447 bool redeclares_gl_fragcoord
;
2448 bool ARB_fragment_coord_conventions_enable
;
2451 * Fragment shader state from GLSL 1.50 layout qualifiers.
2453 bool origin_upper_left
;
2454 bool pixel_center_integer
;
2457 * Geometry shader state from GLSL 1.50 layout qualifiers.
2462 * 0 - Invocations count not declared in shader, or
2463 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2467 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2468 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2473 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2474 * it's not set in this shader.
2480 * Map from image uniform index to image unit (set by glUniform1i())
2482 * An image uniform index is associated with each image uniform by
2483 * the linker. The image index associated with each uniform is
2484 * stored in the \c gl_uniform_storage::image field.
2486 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2489 * Access qualifier specified in the shader for each image uniform
2490 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2493 * It may be different, though only more strict than the value of
2494 * \c gl_image_unit::Access for the corresponding image unit.
2496 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2499 * Number of image uniforms defined in the shader. It specifies
2500 * the number of valid elements in the \c ImageUnits and \c
2501 * ImageAccess arrays above.
2506 * Whether early fragment tests are enabled as defined by
2507 * ARB_shader_image_load_store.
2509 bool EarlyFragmentTests
;
2512 * Compute shader state from ARB_compute_shader layout qualifiers.
2516 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2517 * it's not set in this shader.
2519 unsigned LocalSize
[3];
2524 struct gl_uniform_buffer_variable
2529 * Name of the uniform as seen by glGetUniformIndices.
2531 * glGetUniformIndices requires that the block instance index \b not be
2532 * present in the name of queried uniforms.
2535 * \c gl_uniform_buffer_variable::IndexName and
2536 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2540 const struct glsl_type
*Type
;
2541 unsigned int Offset
;
2546 enum gl_uniform_block_packing
2554 struct gl_uniform_block
2556 /** Declared name of the uniform block */
2559 /** Array of supplemental information about UBO ir_variables. */
2560 struct gl_uniform_buffer_variable
*Uniforms
;
2564 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2565 * with glBindBufferBase to bind a buffer object to this uniform block. When
2566 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2571 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2572 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2574 GLuint UniformBufferSize
;
2577 * Layout specified in the shader
2579 * This isn't accessible through the API, but it is used while
2580 * cross-validating uniform blocks.
2582 enum gl_uniform_block_packing _Packing
;
2586 * Structure that represents a reference to an atomic buffer from some
2589 struct gl_active_atomic_buffer
2591 /** Uniform indices of the atomic counters declared within it. */
2595 /** Binding point index associated with it. */
2598 /** Minimum reasonable size it is expected to have. */
2601 /** Shader stages making use of it. */
2602 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2606 * Active resource in a gl_shader_program
2608 struct gl_program_resource
2610 GLenum Type
; /** Program interface type. */
2611 const void *Data
; /** Pointer to resource associated data structure. */
2612 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2616 * A GLSL program object.
2617 * Basically a linked collection of vertex and fragment shaders.
2619 struct gl_shader_program
2621 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2622 GLuint Name
; /**< aka handle or ID */
2623 GLchar
*Label
; /**< GL_KHR_debug */
2624 GLint RefCount
; /**< Reference count */
2625 GLboolean DeletePending
;
2628 * Is the application intending to glGetProgramBinary this program?
2630 GLboolean BinaryRetreivableHint
;
2633 * Indicates whether program can be bound for individual pipeline stages
2634 * using UseProgramStages after it is next linked.
2636 GLboolean SeparateShader
;
2638 GLuint NumShaders
; /**< number of attached shaders */
2639 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2642 * User-defined attribute bindings
2644 * These are set via \c glBindAttribLocation and are used to direct the
2645 * GLSL linker. These are \b not the values used in the compiled shader,
2646 * and they are \b not the values returned by \c glGetAttribLocation.
2648 struct string_to_uint_map
*AttributeBindings
;
2651 * User-defined fragment data bindings
2653 * These are set via \c glBindFragDataLocation and are used to direct the
2654 * GLSL linker. These are \b not the values used in the compiled shader,
2655 * and they are \b not the values returned by \c glGetFragDataLocation.
2657 struct string_to_uint_map
*FragDataBindings
;
2658 struct string_to_uint_map
*FragDataIndexBindings
;
2661 * Transform feedback varyings last specified by
2662 * glTransformFeedbackVaryings().
2664 * For the current set of transform feedback varyings used for transform
2665 * feedback output, see LinkedTransformFeedback.
2670 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2671 } TransformFeedback
;
2673 /** Post-link transform feedback info. */
2674 struct gl_transform_feedback_info LinkedTransformFeedback
;
2676 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2677 enum gl_frag_depth_layout FragDepthLayout
;
2680 * Geometry shader state - copied into gl_geometry_program by
2681 * _mesa_copy_linked_program_data().
2687 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2690 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2691 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2692 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2694 * True if gl_ClipDistance is written to. Copied into
2695 * gl_geometry_program by _mesa_copy_linked_program_data().
2697 GLboolean UsesClipDistance
;
2698 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2699 0 if not present. */
2700 bool UsesEndPrimitive
;
2704 /** Vertex shader state */
2707 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2708 * by _mesa_copy_linked_program_data().
2710 GLboolean UsesClipDistance
;
2711 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2712 0 if not present. */
2716 * Compute shader state - copied into gl_compute_program by
2717 * _mesa_copy_linked_program_data().
2721 * If this shader contains a compute stage, size specified using
2722 * local_size_{x,y,z}. Otherwise undefined.
2724 unsigned LocalSize
[3];
2727 /* post-link info: */
2728 unsigned NumUserUniformStorage
;
2729 unsigned NumHiddenUniforms
;
2730 struct gl_uniform_storage
*UniformStorage
;
2733 * Mapping from GL uniform locations returned by \c glUniformLocation to
2734 * UniformStorage entries. Arrays will have multiple contiguous slots
2735 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2737 unsigned NumUniformRemapTable
;
2738 struct gl_uniform_storage
**UniformRemapTable
;
2741 * Size of the gl_ClipDistance array that is output from the last pipeline
2742 * stage before the fragment shader.
2744 unsigned LastClipDistanceArraySize
;
2746 unsigned NumUniformBlocks
;
2747 struct gl_uniform_block
*UniformBlocks
;
2750 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2751 * they're used in, or -1.
2753 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2754 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2756 int *UniformBlockStageIndex
[MESA_SHADER_STAGES
];
2759 * Map of active uniform names to locations
2761 * Maps any active uniform that is not an array element to a location.
2762 * Each active uniform, including individual structure members will appear
2763 * in this map. This roughly corresponds to the set of names that would be
2764 * enumerated by \c glGetActiveUniform.
2766 struct string_to_uint_map
*UniformHash
;
2768 struct gl_active_atomic_buffer
*AtomicBuffers
;
2769 unsigned NumAtomicBuffers
;
2771 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2772 GLboolean Validated
;
2773 GLboolean _Used
; /**< Ever used for drawing? */
2774 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2777 unsigned Version
; /**< GLSL version used for linking */
2778 bool IsES
; /**< True if this program uses GLSL ES */
2781 * Per-stage shaders resulting from the first stage of linking.
2783 * Set of linked shaders for this program. The array is accessed using the
2784 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2787 struct gl_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2789 /** List of all active resources after linking. */
2790 struct gl_program_resource
*ProgramResourceList
;
2791 unsigned NumProgramResourceList
;
2793 /* True if any of the fragment shaders attached to this program use:
2794 * #extension ARB_fragment_coord_conventions: enable
2796 GLboolean ARB_fragment_coord_conventions_enable
;
2800 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2801 #define GLSL_LOG 0x2 /**< Write shaders to files */
2802 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2803 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2804 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2805 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2806 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2807 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2808 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2809 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2813 * Context state for GLSL vertex/fragment shaders.
2814 * Extended to support pipeline object
2816 struct gl_pipeline_object
2818 /** Name of the pipeline object as received from glGenProgramPipelines.
2819 * It would be 0 for shaders without separate shader objects.
2828 * Programs used for rendering
2830 * There is a separate program set for each shader stage.
2832 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2834 struct gl_shader_program
*_CurrentFragmentProgram
;
2837 * Program used by glUniform calls.
2839 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2841 struct gl_shader_program
*ActiveProgram
;
2843 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2845 GLboolean EverBound
; /**< Has the pipeline object been created */
2847 GLboolean Validated
; /**< Pipeline Validation status */
2853 * Context state for GLSL pipeline shaders.
2855 struct gl_pipeline_shader_state
2857 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2858 struct gl_pipeline_object
*Current
;
2860 /* Default Object to ensure that _Shader is never NULL */
2861 struct gl_pipeline_object
*Default
;
2863 /** Pipeline objects */
2864 struct _mesa_HashTable
*Objects
;
2868 * Compiler options for a single GLSL shaders type
2870 struct gl_shader_compiler_options
2872 /** Driver-selectable options: */
2873 GLboolean EmitCondCodes
; /**< Use condition codes? */
2874 GLboolean EmitNoLoops
;
2875 GLboolean EmitNoFunctions
;
2876 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2877 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2878 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2879 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2880 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2881 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2884 * \name Forms of indirect addressing the driver cannot do.
2887 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2888 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2889 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2890 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2893 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2894 GLuint MaxUnrollIterations
;
2897 * Optimize code for array of structures backends.
2899 * This is a proxy for:
2900 * - preferring DP4 instructions (rather than MUL/MAD) for
2901 * matrix * vector operations, such as position transformation.
2903 GLboolean OptimizeForAOS
;
2905 const struct nir_shader_compiler_options
*NirOptions
;
2910 * Occlusion/timer query object.
2912 struct gl_query_object
2914 GLenum Target
; /**< The query target, when active */
2915 GLuint Id
; /**< hash table ID/name */
2916 GLchar
*Label
; /**< GL_KHR_debug */
2917 GLuint64EXT Result
; /**< the counter */
2918 GLboolean Active
; /**< inside Begin/EndQuery */
2919 GLboolean Ready
; /**< result is ready? */
2920 GLboolean EverBound
;/**< has query object ever been bound */
2921 GLuint Stream
; /**< The stream */
2926 * Context state for query objects.
2928 struct gl_query_state
2930 struct _mesa_HashTable
*QueryObjects
;
2931 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2932 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2934 /** GL_NV_conditional_render */
2935 struct gl_query_object
*CondRenderQuery
;
2937 /** GL_EXT_transform_feedback */
2938 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
2939 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
2941 /** GL_ARB_timer_query */
2942 struct gl_query_object
*TimeElapsed
;
2944 /** GL_ARB_pipeline_statistics_query */
2945 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
2947 GLenum CondRenderMode
;
2951 /** Sync object state */
2952 struct gl_sync_object
2954 GLenum Type
; /**< GL_SYNC_FENCE */
2955 GLuint Name
; /**< Fence name */
2956 GLchar
*Label
; /**< GL_KHR_debug */
2957 GLint RefCount
; /**< Reference count */
2958 GLboolean DeletePending
; /**< Object was deleted while there were still
2959 * live references (e.g., sync not yet finished)
2961 GLenum SyncCondition
;
2962 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2963 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2968 * State which can be shared by multiple contexts:
2970 struct gl_shared_state
2972 mtx_t Mutex
; /**< for thread safety */
2973 GLint RefCount
; /**< Reference count */
2974 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2975 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2977 /** Default texture objects (shared by all texture units) */
2978 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2980 /** Fallback texture used when a bound texture is incomplete */
2981 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2984 * \name Thread safety and statechange notification for texture
2987 * \todo Improve the granularity of locking.
2990 mtx_t TexMutex
; /**< texobj thread safety */
2991 GLuint TextureStateStamp
; /**< state notification for shared tex */
2994 /** Default buffer object for vertex arrays that aren't in VBOs */
2995 struct gl_buffer_object
*NullBufferObj
;
2998 * \name Vertex/geometry/fragment programs
3001 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3002 struct gl_vertex_program
*DefaultVertexProgram
;
3003 struct gl_fragment_program
*DefaultFragmentProgram
;
3004 struct gl_geometry_program
*DefaultGeometryProgram
;
3007 /* GL_ATI_fragment_shader */
3008 struct _mesa_HashTable
*ATIShaders
;
3009 struct ati_fragment_shader
*DefaultFragmentShader
;
3011 struct _mesa_HashTable
*BufferObjects
;
3013 /** Table of both gl_shader and gl_shader_program objects */
3014 struct _mesa_HashTable
*ShaderObjects
;
3016 /* GL_EXT_framebuffer_object */
3017 struct _mesa_HashTable
*RenderBuffers
;
3018 struct _mesa_HashTable
*FrameBuffers
;
3021 struct set
*SyncObjects
;
3023 /** GL_ARB_sampler_objects */
3024 struct _mesa_HashTable
*SamplerObjects
;
3027 * Some context in this share group was affected by a GPU reset
3029 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3030 * been affected by a GPU reset must also return
3031 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3033 * Once this field becomes true, it is never reset to false.
3035 bool ShareGroupReset
;
3041 * Renderbuffers represent drawing surfaces such as color, depth and/or
3042 * stencil. A framebuffer object has a set of renderbuffers.
3043 * Drivers will typically derive subclasses of this type.
3045 struct gl_renderbuffer
3047 mtx_t Mutex
; /**< for thread safety */
3048 GLuint ClassID
; /**< Useful for drivers */
3050 GLchar
*Label
; /**< GL_KHR_debug */
3052 GLuint Width
, Height
;
3054 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3055 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3057 * True for renderbuffers that wrap textures, giving the driver a chance to
3058 * flush render caches through the FinishRenderTexture hook.
3060 * Drivers may also set this on renderbuffers other than those generated by
3061 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3062 * called without a rb->TexImage.
3064 GLboolean NeedsFinishRenderTexture
;
3066 GLenum InternalFormat
; /**< The user-specified format */
3067 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3068 GL_STENCIL_INDEX. */
3069 mesa_format Format
; /**< The actual renderbuffer memory format */
3071 * Pointer to the texture image if this renderbuffer wraps a texture,
3074 * Note that the reference on the gl_texture_object containing this
3075 * TexImage is held by the gl_renderbuffer_attachment.
3077 struct gl_texture_image
*TexImage
;
3079 /** Delete this renderbuffer */
3080 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3082 /** Allocate new storage for this renderbuffer */
3083 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3084 struct gl_renderbuffer
*rb
,
3085 GLenum internalFormat
,
3086 GLuint width
, GLuint height
);
3091 * A renderbuffer attachment points to either a texture object (and specifies
3092 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3094 struct gl_renderbuffer_attachment
3096 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3100 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3101 * application supplied renderbuffer object.
3103 struct gl_renderbuffer
*Renderbuffer
;
3106 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3107 * supplied texture object.
3109 struct gl_texture_object
*Texture
;
3110 GLuint TextureLevel
; /**< Attached mipmap level. */
3111 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3112 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3113 * and 2D array textures */
3119 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3120 * In C++ terms, think of this as a base class from which device drivers
3121 * will make derived classes.
3123 struct gl_framebuffer
3125 mtx_t Mutex
; /**< for thread safety */
3127 * If zero, this is a window system framebuffer. If non-zero, this
3128 * is a FBO framebuffer; note that for some devices (i.e. those with
3129 * a natural pixel coordinate system for FBOs that differs from the
3130 * OpenGL/Mesa coordinate system), this means that the viewport,
3131 * polygon face orientation, and polygon stipple will have to be inverted.
3136 GLchar
*Label
; /**< GL_KHR_debug */
3138 GLboolean DeletePending
;
3141 * The framebuffer's visual. Immutable if this is a window system buffer.
3142 * Computed from attachments if user-made FBO.
3144 struct gl_config Visual
;
3146 GLuint Width
, Height
; /**< size of frame buffer in pixels */
3148 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
3150 GLint _Xmin
, _Xmax
; /**< inclusive */
3151 GLint _Ymin
, _Ymax
; /**< exclusive */
3154 /** \name Derived Z buffer stuff */
3156 GLuint _DepthMax
; /**< Max depth buffer value */
3157 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3158 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3161 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3164 /** Integer color values */
3165 GLboolean _IntegerColor
;
3167 /* ARB_color_buffer_float */
3168 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3169 GLboolean _HasSNormOrFloatColorBuffer
;
3172 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3173 * is not layered. For cube maps and cube map arrays, each cube face
3174 * counts as a layer.
3176 GLuint MaxNumLayers
;
3178 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3179 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3181 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3182 * attribute group and GL_PIXEL attribute group, respectively.
3184 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3185 GLenum ColorReadBuffer
;
3187 /** Computed from ColorDraw/ReadBuffer above */
3188 GLuint _NumColorDrawBuffers
;
3189 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3190 GLint _ColorReadBufferIndex
; /* -1 = None */
3191 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3192 struct gl_renderbuffer
*_ColorReadBuffer
;
3194 /** Delete this framebuffer */
3195 void (*Delete
)(struct gl_framebuffer
*fb
);
3200 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3204 GLushort RangeMin
; /**< min value exponent */
3205 GLushort RangeMax
; /**< max value exponent */
3206 GLushort Precision
; /**< number of mantissa bits */
3211 * Limits for vertex, geometry and fragment programs/shaders.
3213 struct gl_program_constants
3215 /* logical limits */
3216 GLuint MaxInstructions
;
3217 GLuint MaxAluInstructions
;
3218 GLuint MaxTexInstructions
;
3219 GLuint MaxTexIndirections
;
3222 GLuint MaxAddressRegs
;
3223 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3224 GLuint MaxParameters
;
3225 GLuint MaxLocalParams
;
3226 GLuint MaxEnvParams
;
3227 /* native/hardware limits */
3228 GLuint MaxNativeInstructions
;
3229 GLuint MaxNativeAluInstructions
;
3230 GLuint MaxNativeTexInstructions
;
3231 GLuint MaxNativeTexIndirections
;
3232 GLuint MaxNativeAttribs
;
3233 GLuint MaxNativeTemps
;
3234 GLuint MaxNativeAddressRegs
;
3235 GLuint MaxNativeParameters
;
3237 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3240 * \name Per-stage input / output limits
3242 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3243 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3244 * ES). This is stored as \c gl_constants::MaxVarying.
3246 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3247 * variables. Each stage as a certain number of outputs that it can feed
3248 * to the next stage and a certain number inputs that it can consume from
3249 * the previous stage.
3251 * Vertex shader inputs do not participate this in this accounting.
3252 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3254 * Fragment shader outputs do not participate this in this accounting.
3255 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3258 GLuint MaxInputComponents
;
3259 GLuint MaxOutputComponents
;
3262 /* ES 2.0 and GL_ARB_ES2_compatibility */
3263 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3264 struct gl_precision LowInt
, MediumInt
, HighInt
;
3265 /* GL_ARB_uniform_buffer_object */
3266 GLuint MaxUniformBlocks
;
3267 GLuint MaxCombinedUniformComponents
;
3268 GLuint MaxTextureImageUnits
;
3270 /* GL_ARB_shader_atomic_counters */
3271 GLuint MaxAtomicBuffers
;
3272 GLuint MaxAtomicCounters
;
3274 /* GL_ARB_shader_image_load_store */
3275 GLuint MaxImageUniforms
;
3280 * Constants which may be overridden by device driver during context creation
3281 * but are never changed after that.
3285 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3286 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3287 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3288 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3289 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3290 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3291 GLuint MaxTextureCoordUnits
;
3292 GLuint MaxCombinedTextureImageUnits
;
3293 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3294 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3295 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3296 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3298 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3300 GLuint MaxArrayLockSize
;
3304 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3305 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3306 GLfloat PointSizeGranularity
;
3307 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3308 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3309 GLfloat LineWidthGranularity
;
3311 GLuint MaxClipPlanes
;
3313 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3314 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3316 GLuint MaxViewportWidth
, MaxViewportHeight
;
3317 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3318 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3322 } ViewportBounds
; /**< GL_ARB_viewport_array */
3324 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3325 GLuint MaxProgramMatrices
;
3326 GLuint MaxProgramMatrixStackDepth
;
3329 GLuint SamplesPassed
;
3332 GLuint PrimitivesGenerated
;
3333 GLuint PrimitivesWritten
;
3334 GLuint VerticesSubmitted
;
3335 GLuint PrimitivesSubmitted
;
3336 GLuint VsInvocations
;
3338 GLuint TessInvocations
;
3339 GLuint GsInvocations
;
3340 GLuint GsPrimitives
;
3341 GLuint FsInvocations
;
3342 GLuint ComputeInvocations
;
3343 GLuint ClInPrimitives
;
3344 GLuint ClOutPrimitives
;
3347 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3349 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3350 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3351 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3353 /** Number of varying vectors between any two shader stages. */
3357 * GL_ARB_uniform_buffer_object
3359 GLuint MaxCombinedUniformBlocks
;
3360 GLuint MaxUniformBufferBindings
;
3361 GLuint MaxUniformBlockSize
;
3362 GLuint UniformBufferOffsetAlignment
;
3366 * GL_ARB_explicit_uniform_location
3368 GLuint MaxUserAssignableUniformLocations
;
3370 /** GL_ARB_geometry_shader4 */
3371 GLuint MaxGeometryOutputVertices
;
3372 GLuint MaxGeometryTotalOutputComponents
;
3374 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3377 * Changes default GLSL extension behavior from "error" to "warn". It's out
3378 * of spec, but it can make some apps work that otherwise wouldn't.
3380 GLboolean ForceGLSLExtensionsWarn
;
3383 * If non-zero, forces GLSL shaders to behave as if they began
3384 * with "#version ForceGLSLVersion".
3386 GLuint ForceGLSLVersion
;
3389 * Allow GLSL #extension directives in the middle of shaders.
3391 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3394 * Does the driver support real 32-bit integers? (Otherwise, integers are
3395 * simulated via floats.)
3397 GLboolean NativeIntegers
;
3400 * Does VertexID count from zero or from base vertex?
3403 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3404 * ignored and need not be set.
3406 bool VertexID_is_zero_based
;
3409 * If the driver supports real 32-bit integers, what integer value should be
3410 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3412 GLuint UniformBooleanTrue
;
3415 * Maximum amount of time, measured in nanseconds, that the server can wait.
3417 GLuint64 MaxServerWaitTimeout
;
3419 /** GL_EXT_provoking_vertex */
3420 GLboolean QuadsFollowProvokingVertexConvention
;
3422 /** OpenGL version 3.0 */
3423 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3425 /** OpenGL version 3.2 */
3426 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3428 /** OpenGL version 4.4 */
3429 GLuint MaxVertexAttribStride
;
3431 /** GL_EXT_transform_feedback */
3432 GLuint MaxTransformFeedbackBuffers
;
3433 GLuint MaxTransformFeedbackSeparateComponents
;
3434 GLuint MaxTransformFeedbackInterleavedComponents
;
3435 GLuint MaxVertexStreams
;
3437 /** GL_EXT_gpu_shader4 */
3438 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3440 /** GL_ARB_texture_gather */
3441 GLuint MinProgramTextureGatherOffset
;
3442 GLuint MaxProgramTextureGatherOffset
;
3443 GLuint MaxProgramTextureGatherComponents
;
3445 /* GL_ARB_robustness */
3446 GLenum ResetStrategy
;
3448 /* GL_ARB_blend_func_extended */
3449 GLuint MaxDualSourceDrawBuffers
;
3452 * Whether the implementation strips out and ignores texture borders.
3454 * Many GPU hardware implementations don't support rendering with texture
3455 * borders and mipmapped textures. (Note: not static border color, but the
3456 * old 1-pixel border around each edge). Implementations then have to do
3457 * slow fallbacks to be correct, or just ignore the border and be fast but
3458 * wrong. Setting the flag strips the border off of TexImage calls,
3459 * providing "fast but wrong" at significantly reduced driver complexity.
3461 * Texture borders are deprecated in GL 3.0.
3463 GLboolean StripTextureBorder
;
3466 * For drivers which can do a better job at eliminating unused uniforms
3467 * than the GLSL compiler.
3469 * XXX Remove these as soon as a better solution is available.
3471 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3474 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3475 * than passing the transform feedback object to the drawing function.
3477 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3479 /** GL_ARB_map_buffer_alignment */
3480 GLuint MinMapBufferAlignment
;
3483 * Disable varying packing. This is out of spec, but potentially useful
3484 * for older platforms that supports a limited number of texture
3485 * indirections--on these platforms, unpacking the varyings in the fragment
3486 * shader increases the number of texture indirections by 1, which might
3487 * make some shaders not executable at all.
3489 * Drivers that support transform feedback must set this value to GL_FALSE.
3491 GLboolean DisableVaryingPacking
;
3494 * Should meaningful names be generated for compiler temporary variables?
3496 * Generally, it is not useful to have the compiler generate "meaningful"
3497 * names for temporary variables that it creates. This can, however, be a
3498 * useful debugging aid. In Mesa debug builds or release builds when
3499 * MESA_GLSL is set at run-time, meaningful names will be generated.
3500 * Drivers can also force names to be generated by setting this field.
3501 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3502 * vertex shader assembly) is set at run-time.
3504 bool GenerateTemporaryNames
;
3507 * Maximum value supported for an index in DrawElements and friends.
3509 * This must be at least (1ull<<24)-1. The default value is
3512 * \since ES 3.0 or GL_ARB_ES3_compatibility
3513 * \sa _mesa_init_constants
3515 GLuint64 MaxElementIndex
;
3518 * Disable interpretation of line continuations (lines ending with a
3519 * backslash character ('\') in GLSL source.
3521 GLboolean DisableGLSLLineContinuations
;
3523 /** GL_ARB_texture_multisample */
3524 GLint MaxColorTextureSamples
;
3525 GLint MaxDepthTextureSamples
;
3526 GLint MaxIntegerSamples
;
3529 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3530 * samples are laid out in a rectangular grid roughly corresponding to
3531 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3532 * are used to map indices of rectangular grid to sample numbers within
3533 * a pixel. This mapping of indices to sample numbers must be initialized
3534 * by the driver for the target hardware. For example, if we have the 8X
3535 * MSAA sample number layout (sample positions) for XYZ hardware:
3537 * sample indices layout sample number layout
3538 * --------- ---------
3539 * | 0 | 1 | | a | b |
3540 * --------- ---------
3541 * | 2 | 3 | | c | d |
3542 * --------- ---------
3543 * | 4 | 5 | | e | f |
3544 * --------- ---------
3545 * | 6 | 7 | | g | h |
3546 * --------- ---------
3548 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3550 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3552 * SampleMap8x = {a, b, c, d, e, f, g, h};
3554 * Follow the logic for other sample counts.
3556 uint8_t SampleMap2x
[2];
3557 uint8_t SampleMap4x
[4];
3558 uint8_t SampleMap8x
[8];
3560 /** GL_ARB_shader_atomic_counters */
3561 GLuint MaxAtomicBufferBindings
;
3562 GLuint MaxAtomicBufferSize
;
3563 GLuint MaxCombinedAtomicBuffers
;
3564 GLuint MaxCombinedAtomicCounters
;
3566 /** GL_ARB_vertex_attrib_binding */
3567 GLint MaxVertexAttribRelativeOffset
;
3568 GLint MaxVertexAttribBindings
;
3570 /* GL_ARB_shader_image_load_store */
3571 GLuint MaxImageUnits
;
3572 GLuint MaxCombinedImageUnitsAndFragmentOutputs
;
3573 GLuint MaxImageSamples
;
3574 GLuint MaxCombinedImageUniforms
;
3576 /** GL_ARB_compute_shader */
3577 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3578 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3579 GLuint MaxComputeWorkGroupInvocations
;
3581 /** GL_ARB_gpu_shader5 */
3582 GLfloat MinFragmentInterpolationOffset
;
3583 GLfloat MaxFragmentInterpolationOffset
;
3585 GLboolean FakeSWMSAA
;
3587 /** GL_KHR_context_flush_control */
3588 GLenum ContextReleaseBehavior
;
3590 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3595 * Enable flag for each OpenGL extension. Different device drivers will
3596 * enable different extensions at runtime.
3598 struct gl_extensions
3600 GLboolean dummy
; /* don't remove this! */
3601 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3602 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3603 GLboolean ANGLE_texture_compression_dxt
;
3604 GLboolean ARB_ES2_compatibility
;
3605 GLboolean ARB_ES3_compatibility
;
3606 GLboolean ARB_arrays_of_arrays
;
3607 GLboolean ARB_base_instance
;
3608 GLboolean ARB_blend_func_extended
;
3609 GLboolean ARB_buffer_storage
;
3610 GLboolean ARB_clear_texture
;
3611 GLboolean ARB_clip_control
;
3612 GLboolean ARB_color_buffer_float
;
3613 GLboolean ARB_compute_shader
;
3614 GLboolean ARB_conditional_render_inverted
;
3615 GLboolean ARB_conservative_depth
;
3616 GLboolean ARB_copy_image
;
3617 GLboolean ARB_depth_buffer_float
;
3618 GLboolean ARB_depth_clamp
;
3619 GLboolean ARB_depth_texture
;
3620 GLboolean ARB_derivative_control
;
3621 GLboolean ARB_draw_buffers_blend
;
3622 GLboolean ARB_draw_elements_base_vertex
;
3623 GLboolean ARB_draw_indirect
;
3624 GLboolean ARB_draw_instanced
;
3625 GLboolean ARB_fragment_coord_conventions
;
3626 GLboolean ARB_fragment_layer_viewport
;
3627 GLboolean ARB_fragment_program
;
3628 GLboolean ARB_fragment_program_shadow
;
3629 GLboolean ARB_fragment_shader
;
3630 GLboolean ARB_framebuffer_object
;
3631 GLboolean ARB_explicit_attrib_location
;
3632 GLboolean ARB_explicit_uniform_location
;
3633 GLboolean ARB_geometry_shader4
;
3634 GLboolean ARB_gpu_shader5
;
3635 GLboolean ARB_gpu_shader_fp64
;
3636 GLboolean ARB_half_float_vertex
;
3637 GLboolean ARB_instanced_arrays
;
3638 GLboolean ARB_internalformat_query
;
3639 GLboolean ARB_map_buffer_range
;
3640 GLboolean ARB_occlusion_query
;
3641 GLboolean ARB_occlusion_query2
;
3642 GLboolean ARB_pipeline_statistics_query
;
3643 GLboolean ARB_point_sprite
;
3644 GLboolean ARB_sample_shading
;
3645 GLboolean ARB_seamless_cube_map
;
3646 GLboolean ARB_shader_atomic_counters
;
3647 GLboolean ARB_shader_bit_encoding
;
3648 GLboolean ARB_shader_image_load_store
;
3649 GLboolean ARB_shader_precision
;
3650 GLboolean ARB_shader_stencil_export
;
3651 GLboolean ARB_shader_texture_lod
;
3652 GLboolean ARB_shading_language_packing
;
3653 GLboolean ARB_shading_language_420pack
;
3654 GLboolean ARB_shadow
;
3655 GLboolean ARB_stencil_texturing
;
3657 GLboolean ARB_tessellation_shader
;
3658 GLboolean ARB_texture_border_clamp
;
3659 GLboolean ARB_texture_buffer_object
;
3660 GLboolean ARB_texture_buffer_object_rgb32
;
3661 GLboolean ARB_texture_buffer_range
;
3662 GLboolean ARB_texture_compression_bptc
;
3663 GLboolean ARB_texture_compression_rgtc
;
3664 GLboolean ARB_texture_cube_map
;
3665 GLboolean ARB_texture_cube_map_array
;
3666 GLboolean ARB_texture_env_combine
;
3667 GLboolean ARB_texture_env_crossbar
;
3668 GLboolean ARB_texture_env_dot3
;
3669 GLboolean ARB_texture_float
;
3670 GLboolean ARB_texture_gather
;
3671 GLboolean ARB_texture_mirror_clamp_to_edge
;
3672 GLboolean ARB_texture_multisample
;
3673 GLboolean ARB_texture_non_power_of_two
;
3674 GLboolean ARB_texture_stencil8
;
3675 GLboolean ARB_texture_query_levels
;
3676 GLboolean ARB_texture_query_lod
;
3677 GLboolean ARB_texture_rg
;
3678 GLboolean ARB_texture_rgb10_a2ui
;
3679 GLboolean ARB_texture_view
;
3680 GLboolean ARB_timer_query
;
3681 GLboolean ARB_transform_feedback2
;
3682 GLboolean ARB_transform_feedback3
;
3683 GLboolean ARB_transform_feedback_instanced
;
3684 GLboolean ARB_uniform_buffer_object
;
3685 GLboolean ARB_vertex_attrib_64bit
;
3686 GLboolean ARB_vertex_program
;
3687 GLboolean ARB_vertex_shader
;
3688 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3689 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3690 GLboolean ARB_viewport_array
;
3691 GLboolean EXT_blend_color
;
3692 GLboolean EXT_blend_equation_separate
;
3693 GLboolean EXT_blend_func_separate
;
3694 GLboolean EXT_blend_minmax
;
3695 GLboolean EXT_depth_bounds_test
;
3696 GLboolean EXT_draw_buffers2
;
3697 GLboolean EXT_framebuffer_multisample
;
3698 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3699 GLboolean EXT_framebuffer_sRGB
;
3700 GLboolean EXT_gpu_program_parameters
;
3701 GLboolean EXT_gpu_shader4
;
3702 GLboolean EXT_packed_float
;
3703 GLboolean EXT_pixel_buffer_object
;
3704 GLboolean EXT_point_parameters
;
3705 GLboolean EXT_polygon_offset_clamp
;
3706 GLboolean EXT_provoking_vertex
;
3707 GLboolean EXT_shader_integer_mix
;
3708 GLboolean EXT_stencil_two_side
;
3709 GLboolean EXT_texture3D
;
3710 GLboolean EXT_texture_array
;
3711 GLboolean EXT_texture_compression_latc
;
3712 GLboolean EXT_texture_compression_s3tc
;
3713 GLboolean EXT_texture_env_dot3
;
3714 GLboolean EXT_texture_filter_anisotropic
;
3715 GLboolean EXT_texture_integer
;
3716 GLboolean EXT_texture_mirror_clamp
;
3717 GLboolean EXT_texture_shared_exponent
;
3718 GLboolean EXT_texture_snorm
;
3719 GLboolean EXT_texture_sRGB
;
3720 GLboolean EXT_texture_sRGB_decode
;
3721 GLboolean EXT_texture_swizzle
;
3722 GLboolean EXT_transform_feedback
;
3723 GLboolean EXT_timer_query
;
3724 GLboolean EXT_vertex_array_bgra
;
3725 GLboolean OES_standard_derivatives
;
3726 /* vendor extensions */
3727 GLboolean AMD_performance_monitor
;
3728 GLboolean AMD_pinned_memory
;
3729 GLboolean AMD_seamless_cubemap_per_texture
;
3730 GLboolean AMD_vertex_shader_layer
;
3731 GLboolean AMD_vertex_shader_viewport_index
;
3732 GLboolean APPLE_object_purgeable
;
3733 GLboolean ATI_texture_compression_3dc
;
3734 GLboolean ATI_texture_mirror_once
;
3735 GLboolean ATI_texture_env_combine3
;
3736 GLboolean ATI_fragment_shader
;
3737 GLboolean ATI_separate_stencil
;
3738 GLboolean INTEL_performance_query
;
3739 GLboolean MESA_pack_invert
;
3740 GLboolean MESA_ycbcr_texture
;
3741 GLboolean NV_conditional_render
;
3742 GLboolean NV_fog_distance
;
3743 GLboolean NV_fragment_program_option
;
3744 GLboolean NV_point_sprite
;
3745 GLboolean NV_primitive_restart
;
3746 GLboolean NV_texture_barrier
;
3747 GLboolean NV_texture_env_combine4
;
3748 GLboolean NV_texture_rectangle
;
3749 GLboolean NV_vdpau_interop
;
3750 GLboolean TDFX_texture_compression_FXT1
;
3751 GLboolean OES_EGL_image
;
3752 GLboolean OES_draw_texture
;
3753 GLboolean OES_depth_texture_cube_map
;
3754 GLboolean OES_EGL_image_external
;
3755 GLboolean OES_texture_float
;
3756 GLboolean OES_texture_float_linear
;
3757 GLboolean OES_texture_half_float
;
3758 GLboolean OES_texture_half_float_linear
;
3759 GLboolean OES_compressed_ETC1_RGB8_texture
;
3760 GLboolean extension_sentinel
;
3761 /** The extension string */
3762 const GLubyte
*String
;
3763 /** Number of supported extensions */
3769 * A stack of matrices (projection, modelview, color, texture, etc).
3771 struct gl_matrix_stack
3773 GLmatrix
*Top
; /**< points into Stack */
3774 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3775 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3776 GLuint MaxDepth
; /**< size of Stack[] array */
3777 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3782 * \name Bits for image transfer operations
3783 * \sa __struct gl_contextRec::ImageTransferState.
3786 #define IMAGE_SCALE_BIAS_BIT 0x1
3787 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3788 #define IMAGE_MAP_COLOR_BIT 0x4
3789 #define IMAGE_CLAMP_BIT 0x800
3792 /** Pixel Transfer ops */
3793 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3794 IMAGE_SHIFT_OFFSET_BIT | \
3795 IMAGE_MAP_COLOR_BIT)
3798 * \name Bits to indicate what state has changed.
3801 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3802 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3803 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3804 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3805 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3806 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3807 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3808 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3809 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3810 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3811 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3812 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3813 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3814 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3815 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3816 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3817 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3818 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3819 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3820 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3821 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3822 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3823 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3824 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3825 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3826 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3827 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3828 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3829 #define _NEW_BUFFER_OBJECT (1 << 28)
3830 #define _NEW_FRAG_CLAMP (1 << 29)
3831 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3832 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3838 * Composite state flags
3841 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3847 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3857 /* This has to be included here. */
3862 * Display list flags.
3863 * Strictly this is a tnl-private concept, but it doesn't seem
3864 * worthwhile adding a tnl private structure just to hold this one bit
3867 #define DLIST_DANGLING_REFS 0x1
3870 /** Opaque declaration of display list payload data type */
3871 union gl_dlist_node
;
3875 * Provide a location where information about a display list can be
3876 * collected. Could be extended with driverPrivate structures,
3877 * etc. in the future.
3879 struct gl_display_list
3882 GLchar
*Label
; /**< GL_KHR_debug */
3883 GLbitfield Flags
; /**< DLIST_x flags */
3884 /** The dlist commands are in a linked list of nodes */
3885 union gl_dlist_node
*Head
;
3890 * State used during display list compilation and execution.
3892 struct gl_dlist_state
3894 GLuint CallDepth
; /**< Current recursion calling depth */
3896 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3897 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3898 GLuint CurrentPos
; /**< Index into current block of nodes */
3900 GLvertexformat ListVtxfmt
;
3902 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3903 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3905 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3906 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3909 /* State known to have been set by the currently-compiling display
3910 * list. Used to eliminate some redundant state changes.
3918 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3919 * to small enums suitable for use as an array index.
3922 enum mesa_debug_source
{
3923 MESA_DEBUG_SOURCE_API
,
3924 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3925 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3926 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3927 MESA_DEBUG_SOURCE_APPLICATION
,
3928 MESA_DEBUG_SOURCE_OTHER
,
3929 MESA_DEBUG_SOURCE_COUNT
3932 enum mesa_debug_type
{
3933 MESA_DEBUG_TYPE_ERROR
,
3934 MESA_DEBUG_TYPE_DEPRECATED
,
3935 MESA_DEBUG_TYPE_UNDEFINED
,
3936 MESA_DEBUG_TYPE_PORTABILITY
,
3937 MESA_DEBUG_TYPE_PERFORMANCE
,
3938 MESA_DEBUG_TYPE_OTHER
,
3939 MESA_DEBUG_TYPE_MARKER
,
3940 MESA_DEBUG_TYPE_PUSH_GROUP
,
3941 MESA_DEBUG_TYPE_POP_GROUP
,
3942 MESA_DEBUG_TYPE_COUNT
3945 enum mesa_debug_severity
{
3946 MESA_DEBUG_SEVERITY_LOW
,
3947 MESA_DEBUG_SEVERITY_MEDIUM
,
3948 MESA_DEBUG_SEVERITY_HIGH
,
3949 MESA_DEBUG_SEVERITY_NOTIFICATION
,
3950 MESA_DEBUG_SEVERITY_COUNT
3956 * Driver-specific state flags.
3958 * These are or'd with gl_context::NewDriverState to notify a driver about
3959 * a state change. The driver sets the flags at context creation and
3960 * the meaning of the bits set is opaque to core Mesa.
3962 struct gl_driver_flags
3964 /** gl_context::Array::_DrawArrays (vertex array state) */
3967 /** gl_context::TransformFeedback::CurrentObject */
3968 uint64_t NewTransformFeedback
;
3970 /** gl_context::TransformFeedback::CurrentObject::shader_program */
3971 uint64_t NewTransformFeedbackProg
;
3973 /** gl_context::RasterDiscard */
3974 uint64_t NewRasterizerDiscard
;
3977 * gl_context::UniformBufferBindings
3978 * gl_shader_program::UniformBlocks
3980 uint64_t NewUniformBuffer
;
3982 uint64_t NewTextureBuffer
;
3985 * gl_context::AtomicBufferBindings
3987 uint64_t NewAtomicBuffer
;
3990 * gl_context::ImageUnits
3992 uint64_t NewImageUnits
;
3995 struct gl_uniform_buffer_binding
3997 struct gl_buffer_object
*BufferObject
;
3998 /** Start of uniform block data in the buffer */
4000 /** Size of data allowed to be referenced from the buffer (in bytes) */
4003 * glBindBufferBase() indicates that the Size should be ignored and only
4004 * limited by the current size of the BufferObject.
4006 GLboolean AutomaticSize
;
4010 * ARB_shader_image_load_store image unit.
4012 struct gl_image_unit
4015 * Texture object bound to this unit.
4017 struct gl_texture_object
*TexObj
;
4020 * Level of the texture object bound to this unit.
4025 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4026 * GL_FALSE if only some specific layer of the texture is bound.
4032 * GL_TRUE if the state of this image unit is valid and access from
4033 * the shader is allowed. Otherwise loads from this unit should
4034 * return zero and stores should have no effect.
4039 * Layer of the texture object bound to this unit, or zero if the
4040 * whole level is bound.
4045 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4046 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4051 * GL internal format that determines the interpretation of the
4052 * image memory when shader image operations are performed through
4058 * Mesa format corresponding to \c Format.
4060 mesa_format _ActualFormat
;
4065 * Binding point for an atomic counter buffer object.
4067 struct gl_atomic_buffer_binding
4069 struct gl_buffer_object
*BufferObject
;
4075 * Mesa rendering context.
4077 * This is the central context data structure for Mesa. Almost all
4078 * OpenGL state is contained in this structure.
4079 * Think of this as a base class from which device drivers will derive
4084 /** State possibly shared with other contexts in the address space */
4085 struct gl_shared_state
*Shared
;
4087 /** \name API function pointer tables */
4091 * The current dispatch table for non-displaylist-saving execution, either
4092 * BeginEnd or OutsideBeginEnd
4094 struct _glapi_table
*Exec
;
4096 * The normal dispatch table for non-displaylist-saving, non-begin/end
4098 struct _glapi_table
*OutsideBeginEnd
;
4099 /** The dispatch table used between glNewList() and glEndList() */
4100 struct _glapi_table
*Save
;
4102 * The dispatch table used between glBegin() and glEnd() (outside of a
4103 * display list). Only valid functions between those two are set, which is
4104 * mostly just the set in a GLvertexformat struct.
4106 struct _glapi_table
*BeginEnd
;
4108 * Tracks the current dispatch table out of the 3 above, so that it can be
4109 * re-set on glXMakeCurrent().
4111 struct _glapi_table
*CurrentDispatch
;
4114 struct gl_config Visual
;
4115 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4116 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4117 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4118 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4121 * Device driver function pointer table
4123 struct dd_function_table Driver
;
4125 /** Core/Driver constants */
4126 struct gl_constants Const
;
4128 /** \name The various 4x4 matrix stacks */
4130 struct gl_matrix_stack ModelviewMatrixStack
;
4131 struct gl_matrix_stack ProjectionMatrixStack
;
4132 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4133 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4134 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4137 /** Combined modelview and projection matrix */
4138 GLmatrix _ModelProjectMatrix
;
4140 /** \name Display lists */
4141 struct gl_dlist_state ListState
;
4143 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4144 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4146 /** Extension information */
4147 struct gl_extensions Extensions
;
4149 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4151 char *VersionString
;
4153 /** \name State attribute stack (for glPush/PopAttrib) */
4155 GLuint AttribStackDepth
;
4156 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4159 /** \name Renderer attribute groups
4161 * We define a struct for each attribute group to make pushing and popping
4162 * attributes easy. Also it's a good organization.
4165 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4166 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4167 struct gl_current_attrib Current
; /**< Current attributes */
4168 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4169 struct gl_eval_attrib Eval
; /**< Eval attributes */
4170 struct gl_fog_attrib Fog
; /**< Fog attributes */
4171 struct gl_hint_attrib Hint
; /**< Hint attributes */
4172 struct gl_light_attrib Light
; /**< Light attributes */
4173 struct gl_line_attrib Line
; /**< Line attributes */
4174 struct gl_list_attrib List
; /**< List attributes */
4175 struct gl_multisample_attrib Multisample
;
4176 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4177 struct gl_point_attrib Point
; /**< Point attributes */
4178 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4179 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4180 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4181 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4182 struct gl_texture_attrib Texture
; /**< Texture attributes */
4183 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4184 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4187 /** \name Client attribute stack */
4189 GLuint ClientAttribStackDepth
;
4190 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4193 /** \name Client attribute groups */
4195 struct gl_array_attrib Array
; /**< Vertex arrays */
4196 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4197 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4198 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4201 /** \name Other assorted state (not pushed/popped on attribute stack) */
4203 struct gl_pixelmaps PixelMaps
;
4205 struct gl_evaluators EvalMap
; /**< All evaluators */
4206 struct gl_feedback Feedback
; /**< Feedback */
4207 struct gl_selection Select
; /**< Selection */
4209 struct gl_program_state Program
; /**< general program state */
4210 struct gl_vertex_program_state VertexProgram
;
4211 struct gl_fragment_program_state FragmentProgram
;
4212 struct gl_geometry_program_state GeometryProgram
;
4213 struct gl_compute_program_state ComputeProgram
;
4214 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4216 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4217 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4220 * Current active shader pipeline state
4222 * Almost all internal users want ::_Shader instead of ::Shader. The
4223 * exceptions are bits of legacy GLSL API that do not know about separate
4226 * If a program is active via \c glUseProgram, this will point to
4229 * If a program pipeline is active via \c glBindProgramPipeline, this will
4230 * point to \c ::Pipeline.Current.
4232 * If neither a program nor a program pipeline is active, this will point to
4233 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4236 struct gl_pipeline_object
*_Shader
;
4238 struct gl_query_state Query
; /**< occlusion, timer queries */
4240 struct gl_transform_feedback_state TransformFeedback
;
4242 struct gl_perf_monitor_state PerfMonitor
;
4244 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4246 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4247 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4250 * Current GL_ARB_uniform_buffer_object binding referenced by
4251 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4253 struct gl_buffer_object
*UniformBuffer
;
4256 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4257 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4258 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4261 struct gl_uniform_buffer_binding
4262 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4265 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4268 struct gl_buffer_object
*AtomicBuffer
;
4271 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4274 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4277 * Array of atomic counter buffer binding points.
4279 struct gl_atomic_buffer_binding
4280 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4283 * Array of image units for ARB_shader_image_load_store.
4285 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4289 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4291 /* GL_EXT_framebuffer_object */
4292 struct gl_renderbuffer
*CurrentRenderbuffer
;
4294 GLenum ErrorValue
; /**< Last error code */
4297 * Recognize and silence repeated error debug messages in buggy apps.
4299 const char *ErrorDebugFmtString
;
4300 GLuint ErrorDebugCount
;
4302 /* GL_ARB_debug_output/GL_KHR_debug */
4304 struct gl_debug_state
*Debug
;
4306 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4307 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4308 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4310 struct gl_driver_flags DriverFlags
;
4312 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4314 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4316 /** \name Derived state */
4317 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4318 GLfloat _EyeZDir
[3];
4319 GLfloat _ModelViewInvScale
;
4320 GLboolean _NeedEyeCoords
;
4321 GLboolean _ForceEyeCoords
;
4323 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4325 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4327 /** \name For debugging/development only */
4329 GLboolean FirstTimeCurrent
;
4333 * False if this context was created without a config. This is needed
4334 * because the initial state of glDrawBuffers depends on this
4336 GLboolean HasConfig
;
4338 /** software compression/decompression supported or not */
4339 GLboolean Mesa_DXTn
;
4341 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4343 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4346 * \name Hooks for module contexts.
4348 * These will eventually live in the driver or elsewhere.
4351 void *swrast_context
;
4352 void *swsetup_context
;
4353 void *swtnl_context
;
4354 struct vbo_context
*vbo_context
;
4355 struct st_context
*st
;
4360 * \name NV_vdpau_interop
4363 const void *vdpDevice
;
4364 const void *vdpGetProcAddress
;
4365 struct set
*vdpSurfaces
;
4369 * Has this context observed a GPU reset in any context in the share group?
4371 * Once this field becomes true, it is never reset to false.
4373 GLboolean ShareGroupReset
;
4378 extern int MESA_VERBOSE
;
4379 extern int MESA_DEBUG_FLAGS
;
4380 # define MESA_FUNCTION __func__
4382 # define MESA_VERBOSE 0
4383 # define MESA_DEBUG_FLAGS 0
4384 # define MESA_FUNCTION "a function"
4388 /** The MESA_VERBOSE var is a bitmask of these flags */
4391 VERBOSE_VARRAY
= 0x0001,
4392 VERBOSE_TEXTURE
= 0x0002,
4393 VERBOSE_MATERIAL
= 0x0004,
4394 VERBOSE_PIPELINE
= 0x0008,
4395 VERBOSE_DRIVER
= 0x0010,
4396 VERBOSE_STATE
= 0x0020,
4397 VERBOSE_API
= 0x0040,
4398 VERBOSE_DISPLAY_LIST
= 0x0100,
4399 VERBOSE_LIGHTING
= 0x0200,
4400 VERBOSE_PRIMS
= 0x0400,
4401 VERBOSE_VERTS
= 0x0800,
4402 VERBOSE_DISASSEM
= 0x1000,
4403 VERBOSE_DRAW
= 0x2000,
4404 VERBOSE_SWAPBUFFERS
= 0x4000
4408 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4411 DEBUG_SILENT
= (1 << 0),
4412 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4413 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4414 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4423 #endif /* MTYPES_H */