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 "main/glheader.h"
40 #include "main/config.h"
41 #include "glapi/glapi.h"
42 #include "math/m_matrix.h" /* GLmatrix */
43 #include "main/simple_list.h" /* struct simple_node */
44 #include "main/formats.h" /* MESA_FORMAT_COUNT */
53 * \name 64-bit extension of GLbitfield.
56 typedef GLuint64 GLbitfield64
;
58 /** Set a single bit */
59 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
60 /** Set all bits up to excluding bit b */
61 #define BITFIELD64_MASK(b) \
62 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
63 /** Set count bits starting from bit b */
64 #define BITFIELD64_RANGE(b, count) \
65 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
69 * \name Some forward type declarations
72 struct _mesa_HashTable
;
73 struct gl_attrib_node
;
74 struct gl_list_extensions
;
76 struct gl_program_cache
;
77 struct gl_texture_object
;
80 struct gl_uniform_storage
;
81 struct prog_instruction
;
82 struct gl_program_parameter_list
;
89 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
90 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
91 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
92 #define PRIM_UNKNOWN (PRIM_MAX + 2)
97 * Indexes for vertex program attributes.
98 * GL_NV_vertex_program aliases generic attributes over the conventional
99 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
100 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
101 * generic attributes are distinct/separate).
106 VERT_ATTRIB_WEIGHT
= 1,
107 VERT_ATTRIB_NORMAL
= 2,
108 VERT_ATTRIB_COLOR0
= 3,
109 VERT_ATTRIB_COLOR1
= 4,
111 VERT_ATTRIB_COLOR_INDEX
= 6,
112 VERT_ATTRIB_EDGEFLAG
= 7,
113 VERT_ATTRIB_TEX0
= 8,
114 VERT_ATTRIB_TEX1
= 9,
115 VERT_ATTRIB_TEX2
= 10,
116 VERT_ATTRIB_TEX3
= 11,
117 VERT_ATTRIB_TEX4
= 12,
118 VERT_ATTRIB_TEX5
= 13,
119 VERT_ATTRIB_TEX6
= 14,
120 VERT_ATTRIB_TEX7
= 15,
121 VERT_ATTRIB_POINT_SIZE
= 16,
122 VERT_ATTRIB_GENERIC0
= 17,
123 VERT_ATTRIB_GENERIC1
= 18,
124 VERT_ATTRIB_GENERIC2
= 19,
125 VERT_ATTRIB_GENERIC3
= 20,
126 VERT_ATTRIB_GENERIC4
= 21,
127 VERT_ATTRIB_GENERIC5
= 22,
128 VERT_ATTRIB_GENERIC6
= 23,
129 VERT_ATTRIB_GENERIC7
= 24,
130 VERT_ATTRIB_GENERIC8
= 25,
131 VERT_ATTRIB_GENERIC9
= 26,
132 VERT_ATTRIB_GENERIC10
= 27,
133 VERT_ATTRIB_GENERIC11
= 28,
134 VERT_ATTRIB_GENERIC12
= 29,
135 VERT_ATTRIB_GENERIC13
= 30,
136 VERT_ATTRIB_GENERIC14
= 31,
137 VERT_ATTRIB_GENERIC15
= 32,
142 * Symbolic constats to help iterating over
143 * specific blocks of vertex attributes.
146 * includes all fixed function attributes as well as
147 * the aliased GL_NV_vertex_program shader attributes.
149 * include the classic texture coordinate attributes.
150 * Is a subset of VERT_ATTRIB_FF.
151 * VERT_ATTRIB_GENERIC
152 * include the OpenGL 2.0+ GLSL generic shader attributes.
153 * These alias the generic GL_ARB_vertex_shader attributes.
155 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
156 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
158 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
159 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
161 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
162 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
165 * Bitflags for vertex attributes.
166 * These are used in bitfields in many places.
169 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
170 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
171 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
172 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
173 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
174 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
175 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
176 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
177 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
178 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
179 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
180 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
181 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
182 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
183 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
184 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
185 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
186 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
188 #define VERT_BIT(i) BITFIELD64_BIT(i)
189 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
191 #define VERT_BIT_FF(i) VERT_BIT(i)
192 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
193 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
194 #define VERT_BIT_TEX_ALL \
195 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
197 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
198 #define VERT_BIT_GENERIC_ALL \
199 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
204 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
205 * fragment shader inputs.
207 * Note that some of these values are not available to all pipeline stages.
209 * When this enum is updated, the following code must be updated too:
210 * - vertResults (in prog_print.c's arb_output_attrib_string())
211 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
212 * - _mesa_varying_slot_in_fs()
217 VARYING_SLOT_COL0
, /* COL0 and COL1 must be contiguous */
220 VARYING_SLOT_TEX0
, /* TEX0-TEX7 must be contiguous */
228 VARYING_SLOT_PSIZ
, /* Does not appear in FS */
229 VARYING_SLOT_BFC0
, /* Does not appear in FS */
230 VARYING_SLOT_BFC1
, /* Does not appear in FS */
231 VARYING_SLOT_EDGE
, /* Does not appear in FS */
232 VARYING_SLOT_CLIP_VERTEX
, /* Does not appear in FS */
233 VARYING_SLOT_CLIP_DIST0
,
234 VARYING_SLOT_CLIP_DIST1
,
235 VARYING_SLOT_PRIMITIVE_ID
, /* Does not appear in VS */
236 VARYING_SLOT_LAYER
, /* Appears as VS or GS output */
237 VARYING_SLOT_FACE
, /* FS only */
238 VARYING_SLOT_PNTC
, /* FS only */
239 VARYING_SLOT_VAR0
, /* First generic varying slot */
240 VARYING_SLOT_MAX
= VARYING_SLOT_VAR0
+ MAX_VARYING
245 * Bitflags for varying slots.
248 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
249 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
250 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
251 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
252 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
253 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
254 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
255 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
256 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
257 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
258 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
259 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
260 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
261 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
262 MAX_TEXTURE_COORD_UNITS)
263 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
264 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
265 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
266 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
267 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
268 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
269 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
270 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
271 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
272 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
273 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
274 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
279 * Determine if the given gl_varying_slot appears in the fragment shader.
281 static inline GLboolean
282 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
285 case VARYING_SLOT_PSIZ
:
286 case VARYING_SLOT_BFC0
:
287 case VARYING_SLOT_BFC1
:
288 case VARYING_SLOT_EDGE
:
289 case VARYING_SLOT_CLIP_VERTEX
:
290 case VARYING_SLOT_LAYER
:
299 * Fragment program results
303 FRAG_RESULT_DEPTH
= 0,
304 FRAG_RESULT_STENCIL
= 1,
305 /* If a single color should be written to all render targets, this
306 * register is written. No FRAG_RESULT_DATAn will be written.
308 FRAG_RESULT_COLOR
= 2,
310 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
311 * or ARB_fragment_program fragment.color[n]) color results. If
312 * any are written, FRAG_RESULT_COLOR will not be written.
314 FRAG_RESULT_DATA0
= 3,
315 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
320 * Indexes for all renderbuffers
324 /* the four standard color buffers */
332 /* optional aux buffer */
334 /* generic renderbuffers */
347 * Bit flags for all renderbuffers
349 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
350 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
351 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
352 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
353 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
354 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
355 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
356 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
357 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
358 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
359 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
360 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
361 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
362 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
363 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
364 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
365 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
366 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
367 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
370 * Mask of all the color buffer bits (but not accum).
372 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
373 BUFFER_BIT_BACK_LEFT | \
374 BUFFER_BIT_FRONT_RIGHT | \
375 BUFFER_BIT_BACK_RIGHT | \
377 BUFFER_BIT_COLOR0 | \
378 BUFFER_BIT_COLOR1 | \
379 BUFFER_BIT_COLOR2 | \
380 BUFFER_BIT_COLOR3 | \
381 BUFFER_BIT_COLOR4 | \
382 BUFFER_BIT_COLOR5 | \
383 BUFFER_BIT_COLOR6 | \
388 * Framebuffer configuration (aka visual / pixelformat)
389 * Note: some of these fields should be boolean, but it appears that
390 * code in drivers/dri/common/util.c requires int-sized fields.
396 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
397 GLuint doubleBufferMode
;
400 GLboolean haveAccumBuffer
;
401 GLboolean haveDepthBuffer
;
402 GLboolean haveStencilBuffer
;
404 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
405 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
406 GLint rgbBits
; /* total bits for rgb */
407 GLint indexBits
; /* total bits for colorindex */
409 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
417 /* EXT_visual_rating / GLX 1.2 */
420 /* EXT_visual_info / GLX 1.2 */
421 GLint transparentPixel
;
422 /* colors are floats scaled to ints */
423 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
424 GLint transparentIndex
;
426 /* ARB_multisample / SGIS_multisample */
430 /* SGIX_pbuffer / GLX 1.3 */
431 GLint maxPbufferWidth
;
432 GLint maxPbufferHeight
;
433 GLint maxPbufferPixels
;
434 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
435 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
437 /* OML_swap_method */
440 /* EXT_texture_from_pixmap */
441 GLint bindToTextureRgb
;
442 GLint bindToTextureRgba
;
443 GLint bindToMipmapTexture
;
444 GLint bindToTextureTargets
;
447 /* EXT_framebuffer_sRGB */
453 * \name Bit flags used for updating material values.
456 #define MAT_ATTRIB_FRONT_AMBIENT 0
457 #define MAT_ATTRIB_BACK_AMBIENT 1
458 #define MAT_ATTRIB_FRONT_DIFFUSE 2
459 #define MAT_ATTRIB_BACK_DIFFUSE 3
460 #define MAT_ATTRIB_FRONT_SPECULAR 4
461 #define MAT_ATTRIB_BACK_SPECULAR 5
462 #define MAT_ATTRIB_FRONT_EMISSION 6
463 #define MAT_ATTRIB_BACK_EMISSION 7
464 #define MAT_ATTRIB_FRONT_SHININESS 8
465 #define MAT_ATTRIB_BACK_SHININESS 9
466 #define MAT_ATTRIB_FRONT_INDEXES 10
467 #define MAT_ATTRIB_BACK_INDEXES 11
468 #define MAT_ATTRIB_MAX 12
470 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
471 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
472 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
473 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
474 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
475 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
477 #define MAT_INDEX_AMBIENT 0
478 #define MAT_INDEX_DIFFUSE 1
479 #define MAT_INDEX_SPECULAR 2
481 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
482 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
483 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
484 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
485 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
486 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
487 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
488 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
489 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
490 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
491 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
492 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
495 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
496 MAT_BIT_FRONT_AMBIENT | \
497 MAT_BIT_FRONT_DIFFUSE | \
498 MAT_BIT_FRONT_SPECULAR | \
499 MAT_BIT_FRONT_SHININESS | \
500 MAT_BIT_FRONT_INDEXES)
502 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
503 MAT_BIT_BACK_AMBIENT | \
504 MAT_BIT_BACK_DIFFUSE | \
505 MAT_BIT_BACK_SPECULAR | \
506 MAT_BIT_BACK_SHININESS | \
507 MAT_BIT_BACK_INDEXES)
509 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
518 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
526 #define LIGHT_SPOT 0x1
527 #define LIGHT_LOCAL_VIEWER 0x2
528 #define LIGHT_POSITIONAL 0x4
529 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
534 * Light source state.
538 struct gl_light
*next
; /**< double linked list with sentinel */
539 struct gl_light
*prev
;
541 GLfloat Ambient
[4]; /**< ambient color */
542 GLfloat Diffuse
[4]; /**< diffuse color */
543 GLfloat Specular
[4]; /**< specular color */
544 GLfloat EyePosition
[4]; /**< position in eye coordinates */
545 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
546 GLfloat SpotExponent
;
547 GLfloat SpotCutoff
; /**< in degrees */
548 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
549 GLfloat ConstantAttenuation
;
550 GLfloat LinearAttenuation
;
551 GLfloat QuadraticAttenuation
;
552 GLboolean Enabled
; /**< On/off flag */
555 * \name Derived fields
558 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
560 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
561 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
562 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
563 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
564 GLfloat _VP_inf_spot_attenuation
;
566 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
567 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
568 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
578 GLfloat Ambient
[4]; /**< ambient color */
579 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
580 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
581 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
582 * or GL_SEPARATE_SPECULAR_COLOR */
587 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
589 struct gl_accum_attrib
591 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
596 * Used for storing clear color, texture border color, etc.
597 * The float values are typically unclamped.
608 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
610 struct gl_colorbuffer_attrib
612 GLuint ClearIndex
; /**< Index for glClear */
613 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
614 GLuint IndexMask
; /**< Color index write mask */
615 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
617 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
620 * \name alpha testing
623 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
624 GLenum AlphaFunc
; /**< Alpha test function */
625 GLfloat AlphaRefUnclamped
;
626 GLclampf AlphaRef
; /**< Alpha reference value */
633 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
635 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
636 * control, only on the fixed-pointness of the render target.
637 * The query does however depend on fragment color clamping.
639 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
640 GLfloat BlendColor
[4]; /**< Blending color */
644 GLenum SrcRGB
; /**< RGB blend source term */
645 GLenum DstRGB
; /**< RGB blend dest term */
646 GLenum SrcA
; /**< Alpha blend source term */
647 GLenum DstA
; /**< Alpha blend dest term */
648 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
649 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
651 * Set if any blend factor uses SRC1. Computed at the time blend factors
654 GLboolean _UsesDualSrc
;
655 } Blend
[MAX_DRAW_BUFFERS
];
656 /** Are the blend func terms currently different for each buffer/target? */
657 GLboolean _BlendFuncPerBuffer
;
658 /** Are the blend equations currently different for each buffer/target? */
659 GLboolean _BlendEquationPerBuffer
;
666 GLenum LogicOp
; /**< Logic operator */
667 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
668 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
671 GLboolean DitherFlag
; /**< Dither enable flag */
673 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
674 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
675 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
677 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
682 * Current attribute group (GL_CURRENT_BIT).
684 struct gl_current_attrib
687 * \name Current vertex attributes.
688 * \note Values are valid only after FLUSH_VERTICES has been called.
689 * \note Index and Edgeflag current values are stored as floats in the
690 * SIX and SEVEN attribute slots.
692 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
695 * \name Current raster position attributes (always valid).
696 * \note This set of attributes is very similar to the SWvertex struct.
699 GLfloat RasterPos
[4];
700 GLfloat RasterDistance
;
701 GLfloat RasterColor
[4];
702 GLfloat RasterSecondaryColor
[4];
703 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
704 GLboolean RasterPosValid
;
710 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
712 struct gl_depthbuffer_attrib
714 GLenum Func
; /**< Function for depth buffer compare */
715 GLclampd Clear
; /**< Value to clear depth buffer to */
716 GLboolean Test
; /**< Depth buffering enabled flag */
717 GLboolean Mask
; /**< Depth buffer writable? */
718 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
719 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
724 * Evaluator attribute group (GL_EVAL_BIT).
726 struct gl_eval_attrib
732 GLboolean Map1Color4
;
734 GLboolean Map1Normal
;
735 GLboolean Map1TextureCoord1
;
736 GLboolean Map1TextureCoord2
;
737 GLboolean Map1TextureCoord3
;
738 GLboolean Map1TextureCoord4
;
739 GLboolean Map1Vertex3
;
740 GLboolean Map1Vertex4
;
741 GLboolean Map2Color4
;
743 GLboolean Map2Normal
;
744 GLboolean Map2TextureCoord1
;
745 GLboolean Map2TextureCoord2
;
746 GLboolean Map2TextureCoord3
;
747 GLboolean Map2TextureCoord4
;
748 GLboolean Map2Vertex3
;
749 GLboolean Map2Vertex4
;
750 GLboolean AutoNormal
;
754 * \name Map Grid endpoints and divisions and calculated du values
758 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
759 GLint MapGrid2un
, MapGrid2vn
;
760 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
761 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
767 * Fog attribute group (GL_FOG_BIT).
771 GLboolean Enabled
; /**< Fog enabled flag */
772 GLfloat ColorUnclamped
[4]; /**< Fog color */
773 GLfloat Color
[4]; /**< Fog color */
774 GLfloat Density
; /**< Density >= 0.0 */
775 GLfloat Start
; /**< Start distance in eye coords */
776 GLfloat End
; /**< End distance in eye coords */
777 GLfloat Index
; /**< Fog index */
778 GLenum Mode
; /**< Fog mode */
779 GLboolean ColorSumEnabled
;
780 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
781 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
782 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
787 * Hint attribute group (GL_HINT_BIT).
789 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
791 struct gl_hint_attrib
793 GLenum PerspectiveCorrection
;
796 GLenum PolygonSmooth
;
798 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
799 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
800 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
805 * Lighting attribute group (GL_LIGHT_BIT).
807 struct gl_light_attrib
809 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
810 struct gl_lightmodel Model
; /**< Lighting model */
813 * Front and back material values.
814 * Note: must call FLUSH_VERTICES() before using.
816 struct gl_material Material
;
818 GLboolean Enabled
; /**< Lighting enabled flag */
819 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
820 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
821 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
822 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
823 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
824 GLboolean ColorMaterialEnabled
;
825 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
826 GLboolean _ClampVertexColor
;
828 struct gl_light EnabledList
; /**< List sentinel */
831 * Derived state for optimizations:
834 GLboolean _NeedEyeCoords
;
835 GLboolean _NeedVertices
; /**< Use fast shader? */
836 GLfloat _BaseColor
[2][3];
842 * Line attribute group (GL_LINE_BIT).
844 struct gl_line_attrib
846 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
847 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
848 GLushort StipplePattern
; /**< Stipple pattern */
849 GLint StippleFactor
; /**< Stipple repeat factor */
850 GLfloat Width
; /**< Line width */
855 * Display list attribute group (GL_LIST_BIT).
857 struct gl_list_attrib
864 * Multisample attribute group (GL_MULTISAMPLE_BIT).
866 struct gl_multisample_attrib
869 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
870 GLboolean SampleAlphaToCoverage
;
871 GLboolean SampleAlphaToOne
;
872 GLboolean SampleCoverage
;
873 GLfloat SampleCoverageValue
;
874 GLboolean SampleCoverageInvert
;
876 /* ARB_texture_multisample / GL3.2 additions */
877 GLboolean SampleMask
;
878 /** The GL spec defines this as an array but >32x MSAA is madness */
879 GLbitfield SampleMaskValue
;
884 * A pixelmap (see glPixelMap)
889 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
894 * Collection of all pixelmaps
898 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
899 struct gl_pixelmap GtoG
;
900 struct gl_pixelmap BtoB
;
901 struct gl_pixelmap AtoA
;
902 struct gl_pixelmap ItoR
;
903 struct gl_pixelmap ItoG
;
904 struct gl_pixelmap ItoB
;
905 struct gl_pixelmap ItoA
;
906 struct gl_pixelmap ItoI
;
907 struct gl_pixelmap StoS
;
912 * Pixel attribute group (GL_PIXEL_MODE_BIT).
914 struct gl_pixel_attrib
916 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
918 /*--- Begin Pixel Transfer State ---*/
919 /* Fields are in the order in which they're applied... */
921 /** Scale & Bias (index shift, offset) */
923 GLfloat RedBias
, RedScale
;
924 GLfloat GreenBias
, GreenScale
;
925 GLfloat BlueBias
, BlueScale
;
926 GLfloat AlphaBias
, AlphaScale
;
927 GLfloat DepthBias
, DepthScale
;
928 GLint IndexShift
, IndexOffset
;
932 /* Note: actual pixel maps are not part of this attrib group */
933 GLboolean MapColorFlag
;
934 GLboolean MapStencilFlag
;
936 /*--- End Pixel Transfer State ---*/
939 GLfloat ZoomX
, ZoomY
;
944 * Point attribute group (GL_POINT_BIT).
946 struct gl_point_attrib
948 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
949 GLfloat Size
; /**< User-specified point size */
950 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
951 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
952 GLfloat Threshold
; /**< GL_EXT_point_parameters */
953 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
954 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
955 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
956 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
957 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
962 * Polygon attribute group (GL_POLYGON_BIT).
964 struct gl_polygon_attrib
966 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
967 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
968 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
969 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
970 GLboolean CullFlag
; /**< Culling on/off flag */
971 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
972 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
973 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
974 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
975 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
976 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
977 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
978 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
983 * Scissor attributes (GL_SCISSOR_BIT).
985 struct gl_scissor_attrib
987 GLboolean Enabled
; /**< Scissor test enabled? */
988 GLint X
, Y
; /**< Lower left corner of box */
989 GLsizei Width
, Height
; /**< Size of box */
994 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
996 * Three sets of stencil data are tracked so that OpenGL 2.0,
997 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
998 * simultaneously. In each of the stencil state arrays, element 0 corresponds
999 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1000 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1001 * GL_EXT_stencil_two_side GL_BACK state.
1003 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1004 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1006 * The derived value \c _TestTwoSide is set when the front-face and back-face
1007 * stencil state are different.
1009 struct gl_stencil_attrib
1011 GLboolean Enabled
; /**< Enabled flag */
1012 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1013 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1014 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1015 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1016 GLboolean _TestTwoSide
;
1017 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1018 GLenum Function
[3]; /**< Stencil function */
1019 GLenum FailFunc
[3]; /**< Fail function */
1020 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1021 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1022 GLint Ref
[3]; /**< Reference value */
1023 GLuint ValueMask
[3]; /**< Value mask */
1024 GLuint WriteMask
[3]; /**< Write mask */
1025 GLuint Clear
; /**< Clear value */
1030 * An index for each type of texture object. These correspond to the GL
1031 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1032 * Note: the order is from highest priority to lowest priority.
1036 TEXTURE_2D_MULTISAMPLE_INDEX
,
1037 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1038 TEXTURE_CUBE_ARRAY_INDEX
,
1039 TEXTURE_BUFFER_INDEX
,
1040 TEXTURE_2D_ARRAY_INDEX
,
1041 TEXTURE_1D_ARRAY_INDEX
,
1042 TEXTURE_EXTERNAL_INDEX
,
1053 * Bit flags for each type of texture object
1054 * Used for Texture.Unit[]._ReallyEnabled flags.
1057 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1058 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1059 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1060 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1061 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1062 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1063 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1064 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1065 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1066 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1067 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1068 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1073 * Texture image state. Drivers will typically create a subclass of this
1074 * with extra fields for memory buffers, etc.
1076 struct gl_texture_image
1078 GLint InternalFormat
; /**< Internal format as given by the user */
1079 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1080 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1081 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1082 * GL_DEPTH_STENCIL_EXT only. Used for
1083 * choosing TexEnv arithmetic.
1085 gl_format TexFormat
; /**< The actual texture memory format */
1087 GLuint Border
; /**< 0 or 1 */
1088 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1089 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1090 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1091 GLuint Width2
; /**< = Width - 2*Border */
1092 GLuint Height2
; /**< = Height - 2*Border */
1093 GLuint Depth2
; /**< = Depth - 2*Border */
1094 GLuint WidthLog2
; /**< = log2(Width2) */
1095 GLuint HeightLog2
; /**< = log2(Height2) */
1096 GLuint DepthLog2
; /**< = log2(Depth2) */
1097 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1098 levels, computed from the dimensions */
1100 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1101 GLuint Level
; /**< Which mipmap level am I? */
1102 /** Cube map face: index into gl_texture_object::Image[] array */
1105 /** GL_ARB_texture_multisample */
1106 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1107 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1112 * Indexes for cube map faces.
1127 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1128 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1130 struct gl_sampler_object
1134 GLchar
*Label
; /**< GL_KHR_debug */
1136 GLenum WrapS
; /**< S-axis texture image wrap mode */
1137 GLenum WrapT
; /**< T-axis texture image wrap mode */
1138 GLenum WrapR
; /**< R-axis texture image wrap mode */
1139 GLenum MinFilter
; /**< minification filter */
1140 GLenum MagFilter
; /**< magnification filter */
1141 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1142 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1143 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1144 GLfloat LodBias
; /**< OpenGL 1.4 */
1145 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1146 GLenum CompareMode
; /**< GL_ARB_shadow */
1147 GLenum CompareFunc
; /**< GL_ARB_shadow */
1148 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1149 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1154 * Texture object state. Contains the array of mipmap images, border color,
1155 * wrap modes, filter modes, and shadow/texcompare state.
1157 struct gl_texture_object
1159 _glthread_Mutex Mutex
; /**< for thread safety */
1160 GLint RefCount
; /**< reference count */
1161 GLuint Name
; /**< the user-visible texture object ID */
1162 GLchar
*Label
; /**< GL_KHR_debug */
1163 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1165 struct gl_sampler_object Sampler
;
1167 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1169 GLfloat Priority
; /**< in [0,1] */
1170 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1171 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1172 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1173 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1174 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1175 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1176 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1177 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1178 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1179 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1180 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1181 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1182 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1183 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1185 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1187 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1188 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1190 /** GL_ARB_texture_buffer_object */
1191 struct gl_buffer_object
*BufferObject
;
1192 GLenum BufferObjectFormat
;
1193 /** Equivalent Mesa format for BufferObjectFormat. */
1194 gl_format _BufferObjectFormat
;
1195 /** GL_ARB_texture_buffer_range */
1196 GLintptr BufferOffset
;
1197 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1199 /** GL_OES_EGL_image_external */
1200 GLint RequiredTextureImageUnits
;
1204 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1205 #define MAX_COMBINER_TERMS 4
1209 * Texture combine environment state.
1211 struct gl_tex_env_combine_state
1213 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1214 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1215 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1216 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1217 GLenum SourceA
[MAX_COMBINER_TERMS
];
1218 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1219 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1220 GLenum OperandA
[MAX_COMBINER_TERMS
];
1221 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1222 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1223 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1224 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1229 * TexGenEnabled flags.
1236 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1241 * Bit flag versions of the corresponding GL_ constants.
1244 #define TEXGEN_SPHERE_MAP 0x1
1245 #define TEXGEN_OBJ_LINEAR 0x2
1246 #define TEXGEN_EYE_LINEAR 0x4
1247 #define TEXGEN_REFLECTION_MAP_NV 0x8
1248 #define TEXGEN_NORMAL_MAP_NV 0x10
1250 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1251 TEXGEN_REFLECTION_MAP_NV | \
1252 TEXGEN_NORMAL_MAP_NV)
1253 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1254 TEXGEN_REFLECTION_MAP_NV | \
1255 TEXGEN_NORMAL_MAP_NV | \
1261 /** Tex-gen enabled for texture unit? */
1262 #define ENABLE_TEXGEN(unit) (1 << (unit))
1264 /** Non-identity texture matrix for texture unit? */
1265 #define ENABLE_TEXMAT(unit) (1 << (unit))
1269 * Texture coord generation state.
1273 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1274 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1275 GLfloat ObjectPlane
[4];
1276 GLfloat EyePlane
[4];
1281 * Texture unit state. Contains enable flags, texture environment/function/
1282 * combiners, texgen state, and pointers to current texture objects.
1284 struct gl_texture_unit
1286 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1287 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1289 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1290 GLclampf EnvColor
[4];
1291 GLfloat EnvColorUnclamped
[4];
1293 struct gl_texgen GenS
;
1294 struct gl_texgen GenT
;
1295 struct gl_texgen GenR
;
1296 struct gl_texgen GenQ
;
1297 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1298 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1300 GLfloat LodBias
; /**< for biasing mipmap levels */
1302 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1304 /** Current sampler object (GL_ARB_sampler_objects) */
1305 struct gl_sampler_object
*Sampler
;
1308 * \name GL_EXT_texture_env_combine
1310 struct gl_tex_env_combine_state Combine
;
1313 * Derived state based on \c EnvMode and the \c BaseFormat of the
1314 * currently enabled texture.
1316 struct gl_tex_env_combine_state _EnvMode
;
1319 * Currently enabled combiner state. This will point to either
1320 * \c Combine or \c _EnvMode.
1322 struct gl_tex_env_combine_state
*_CurrentCombine
;
1324 /** Current texture object pointers */
1325 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1327 /** Points to highest priority, complete and enabled texture object */
1328 struct gl_texture_object
*_Current
;
1333 * Texture attribute group (GL_TEXTURE_BIT).
1335 struct gl_texture_attrib
1337 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1338 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1340 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1342 /** GL_ARB_texture_buffer_object */
1343 struct gl_buffer_object
*BufferObject
;
1345 /** GL_ARB_seamless_cubemap */
1346 GLboolean CubeMapSeamless
;
1348 /** Texture units/samplers used by vertex or fragment texturing */
1349 GLbitfield _EnabledUnits
;
1351 /** Texture coord units/sets used for fragment texturing */
1352 GLbitfield _EnabledCoordUnits
;
1354 /** Texture coord units that have texgen enabled */
1355 GLbitfield _TexGenEnabled
;
1357 /** Texture coord units that have non-identity matrices */
1358 GLbitfield _TexMatEnabled
;
1360 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1361 GLbitfield _GenFlags
;
1366 * Data structure representing a single clip plane (e.g. one of the elements
1367 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1369 typedef GLfloat gl_clip_plane
[4];
1373 * Transformation attribute group (GL_TRANSFORM_BIT).
1375 struct gl_transform_attrib
1377 GLenum MatrixMode
; /**< Matrix mode */
1378 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1379 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1380 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1381 GLboolean Normalize
; /**< Normalize all normals? */
1382 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1383 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1384 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1386 GLfloat CullEyePos
[4];
1387 GLfloat CullObjPos
[4];
1392 * Viewport attribute group (GL_VIEWPORT_BIT).
1394 struct gl_viewport_attrib
1396 GLint X
, Y
; /**< position */
1397 GLsizei Width
, Height
; /**< size */
1398 GLfloat Near
, Far
; /**< Depth buffer range */
1399 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1404 * GL_ARB_vertex/pixel_buffer_object buffer object
1406 struct gl_buffer_object
1408 _glthread_Mutex Mutex
;
1411 GLchar
*Label
; /**< GL_KHR_debug */
1412 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1413 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1414 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1415 /** Fields describing a mapped buffer */
1417 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1418 GLvoid
*Pointer
; /**< User-space address of mapping */
1419 GLintptr Offset
; /**< Mapped offset */
1420 GLsizeiptr Length
; /**< Mapped length */
1422 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1423 GLboolean Written
; /**< Ever written to? (for debugging) */
1424 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1429 * Client pixel packing/unpacking attributes
1431 struct gl_pixelstore_attrib
1439 GLboolean SwapBytes
;
1441 GLboolean Invert
; /**< GL_MESA_pack_invert */
1442 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1447 * Client vertex array attributes
1449 struct gl_client_array
1451 GLint Size
; /**< components per element (1,2,3,4) */
1452 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1453 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1454 GLsizei Stride
; /**< user-specified stride */
1455 GLsizei StrideB
; /**< actual stride in bytes */
1456 const GLubyte
*Ptr
; /**< Points to array data */
1457 GLboolean Enabled
; /**< Enabled flag is a boolean */
1458 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1459 GLboolean Integer
; /**< Integer-valued? */
1460 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1461 GLuint _ElementSize
; /**< size of each element in bytes */
1463 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1464 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1469 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1470 * extension, but a nice encapsulation in any case.
1472 struct gl_array_object
1474 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1476 GLchar
*Label
; /**< GL_KHR_debug */
1479 _glthread_Mutex Mutex
;
1482 * Does the VAO use ARB semantics or Apple semantics?
1484 * There are several ways in which ARB_vertex_array_object and
1485 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1488 * - ARB VAOs require that all array data be sourced from vertex buffer
1489 * objects, but Apple VAOs do not.
1491 * - ARB VAOs require that names come from GenVertexArrays.
1493 * This flag notes which behavior governs this VAO.
1495 GLboolean ARBsemantics
;
1498 * Has this array object been bound?
1500 GLboolean EverBound
;
1502 /** Vertex attribute arrays */
1503 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1505 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1506 GLbitfield64 _Enabled
;
1509 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1510 * we can determine the max legal (in bounds) glDrawElements array index.
1514 struct gl_buffer_object
*ElementArrayBufferObj
;
1519 * Vertex array state
1521 struct gl_array_attrib
1523 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1524 struct gl_array_object
*ArrayObj
;
1526 /** The default vertex array object */
1527 struct gl_array_object
*DefaultArrayObj
;
1529 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1530 struct _mesa_HashTable
*Objects
;
1532 GLint ActiveTexture
; /**< Client Active Texture */
1533 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1534 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1537 * \name Primitive restart controls
1539 * Primitive restart is enabled if either \c PrimitiveRestart or
1540 * \c PrimitiveRestartFixedIndex is set.
1543 GLboolean PrimitiveRestart
;
1544 GLboolean PrimitiveRestartFixedIndex
;
1545 GLboolean _PrimitiveRestart
;
1546 GLuint RestartIndex
;
1549 /* GL_ARB_vertex_buffer_object */
1550 struct gl_buffer_object
*ArrayBufferObj
;
1553 * Vertex arrays as consumed by a driver.
1554 * The array pointer is set up only by the VBO module.
1556 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1561 * Feedback buffer state
1566 GLbitfield _Mask
; /**< FB_* bits */
1574 * Selection buffer state
1578 GLuint
*Buffer
; /**< selection buffer */
1579 GLuint BufferSize
; /**< size of the selection buffer */
1580 GLuint BufferCount
; /**< number of values in the selection buffer */
1581 GLuint Hits
; /**< number of records in the selection buffer */
1582 GLuint NameStackDepth
; /**< name stack depth */
1583 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1584 GLboolean HitFlag
; /**< hit flag */
1585 GLfloat HitMinZ
; /**< minimum hit depth */
1586 GLfloat HitMaxZ
; /**< maximum hit depth */
1591 * 1-D Evaluator control points
1595 GLuint Order
; /**< Number of control points */
1596 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1597 GLfloat
*Points
; /**< Points to contiguous control points */
1602 * 2-D Evaluator control points
1606 GLuint Uorder
; /**< Number of control points in U dimension */
1607 GLuint Vorder
; /**< Number of control points in V dimension */
1610 GLfloat
*Points
; /**< Points to contiguous control points */
1615 * All evaluator control point state
1617 struct gl_evaluators
1623 struct gl_1d_map Map1Vertex3
;
1624 struct gl_1d_map Map1Vertex4
;
1625 struct gl_1d_map Map1Index
;
1626 struct gl_1d_map Map1Color4
;
1627 struct gl_1d_map Map1Normal
;
1628 struct gl_1d_map Map1Texture1
;
1629 struct gl_1d_map Map1Texture2
;
1630 struct gl_1d_map Map1Texture3
;
1631 struct gl_1d_map Map1Texture4
;
1638 struct gl_2d_map Map2Vertex3
;
1639 struct gl_2d_map Map2Vertex4
;
1640 struct gl_2d_map Map2Index
;
1641 struct gl_2d_map Map2Color4
;
1642 struct gl_2d_map Map2Normal
;
1643 struct gl_2d_map Map2Texture1
;
1644 struct gl_2d_map Map2Texture2
;
1645 struct gl_2d_map Map2Texture3
;
1646 struct gl_2d_map Map2Texture4
;
1651 struct gl_transform_feedback_varying_info
1660 * Per-output info vertex shaders for transform feedback.
1662 struct gl_transform_feedback_output
1664 unsigned OutputRegister
;
1665 unsigned OutputBuffer
;
1666 unsigned NumComponents
;
1668 /** offset (in DWORDs) of this output within the interleaved structure */
1672 * Offset into the output register of the data to output. For example,
1673 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1674 * offset is in the y and z components of the output register.
1676 unsigned ComponentOffset
;
1680 /** Post-link transform feedback info. */
1681 struct gl_transform_feedback_info
1683 unsigned NumOutputs
;
1686 * Number of transform feedback buffers in use by this program.
1688 unsigned NumBuffers
;
1690 struct gl_transform_feedback_output
*Outputs
;
1692 /** Transform feedback varyings used for the linking of this shader program.
1694 * Use for glGetTransformFeedbackVarying().
1696 struct gl_transform_feedback_varying_info
*Varyings
;
1700 * Total number of components stored in each buffer. This may be used by
1701 * hardware back-ends to determine the correct stride when interleaving
1702 * multiple transform feedback outputs in the same buffer.
1704 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1709 * Transform feedback object state
1711 struct gl_transform_feedback_object
1713 GLuint Name
; /**< AKA the object ID */
1714 GLchar
*Label
; /**< GL_KHR_debug */
1716 GLboolean Active
; /**< Is transform feedback enabled? */
1717 GLboolean Paused
; /**< Is transform feedback paused? */
1718 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1720 GLboolean EverBound
; /**< Has this object been bound? */
1723 * The shader program active when BeginTransformFeedback() was called.
1724 * When active and unpaused, this equals ctx->Shader.CurrentVertexProgram.
1726 struct gl_shader_program
*shader_program
;
1729 * GLES: if Active is true, remaining number of primitives which can be
1730 * rendered without overflow. This is necessary to track because GLES
1731 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1732 * glDrawArraysInstanced would overflow transform feedback buffers.
1733 * Undefined if Active is false.
1735 * Not tracked for desktop GL since it's unnecessary.
1737 unsigned GlesRemainingPrims
;
1739 /** The feedback buffers */
1740 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1741 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1743 /** Start of feedback data in dest buffer */
1744 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1747 * Max data to put into dest buffer (in bytes). Computed based on
1748 * RequestedSize and the actual size of the buffer.
1750 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1753 * Size that was specified when the buffer was bound. If the buffer was
1754 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1757 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1762 * Context state for transform feedback.
1764 struct gl_transform_feedback_state
1766 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1768 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1769 struct gl_buffer_object
*CurrentBuffer
;
1771 /** The table of all transform feedback objects */
1772 struct _mesa_HashTable
*Objects
;
1774 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1775 struct gl_transform_feedback_object
*CurrentObject
;
1777 /** The default xform-fb object (Name==0) */
1778 struct gl_transform_feedback_object
*DefaultObject
;
1783 * A "performance monitor" as described in AMD_performance_monitor.
1785 struct gl_perf_monitor_object
1790 * A list of groups with currently active counters.
1792 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1794 unsigned *ActiveGroups
;
1797 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1799 * Checking whether counter 'c' in group 'g' is active can be done via:
1801 * BITSET_TEST(ActiveCounters[g], c)
1803 GLuint
**ActiveCounters
;
1807 union gl_perf_monitor_counter_value
1815 struct gl_perf_monitor_counter
1817 /** Human readable name for the counter. */
1821 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1822 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1826 /** Minimum counter value. */
1827 union gl_perf_monitor_counter_value Minimum
;
1829 /** Maximum counter value. */
1830 union gl_perf_monitor_counter_value Maximum
;
1834 struct gl_perf_monitor_group
1836 /** Human readable name for the group. */
1840 * Maximum number of counters in this group which can be active at the
1843 GLuint MaxActiveCounters
;
1845 /** Array of counters within this group. */
1846 const struct gl_perf_monitor_counter
*Counters
;
1852 * Context state for AMD_performance_monitor.
1854 struct gl_perf_monitor_state
1856 /** Array of performance monitor groups (indexed by group ID) */
1857 const struct gl_perf_monitor_group
*Groups
;
1860 /** The table of all performance monitors. */
1861 struct _mesa_HashTable
*Monitors
;
1866 * Names of the various vertex/fragment program register files, etc.
1868 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1869 * All values should fit in a 4-bit field.
1871 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR,
1872 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1873 * be "uniform" variables since they can only be set outside glBegin/End.
1874 * They're also all stored in the same Parameters array.
1878 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1879 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1880 PROGRAM_INPUT
, /**< machine->Inputs[] */
1881 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1882 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1883 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1884 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1885 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1886 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1887 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1888 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1889 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1890 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1891 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1897 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1898 * one of these values.
1902 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1903 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1904 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1905 SYSTEM_VALUE_MAX
/**< Number of values */
1910 * The possible interpolation qualifiers that can be applied to a fragment
1911 * shader input in GLSL.
1913 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1914 * gl_fragment_program data structure to 0 causes the default behavior.
1916 enum glsl_interp_qualifier
1918 INTERP_QUALIFIER_NONE
= 0,
1919 INTERP_QUALIFIER_SMOOTH
,
1920 INTERP_QUALIFIER_FLAT
,
1921 INTERP_QUALIFIER_NOPERSPECTIVE
,
1922 INTERP_QUALIFIER_COUNT
/**< Number of interpolation qualifiers */
1927 * \brief Layout qualifiers for gl_FragDepth.
1929 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
1930 * a layout qualifier.
1932 * \see enum ir_depth_layout
1934 enum gl_frag_depth_layout
1936 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
1937 FRAG_DEPTH_LAYOUT_ANY
,
1938 FRAG_DEPTH_LAYOUT_GREATER
,
1939 FRAG_DEPTH_LAYOUT_LESS
,
1940 FRAG_DEPTH_LAYOUT_UNCHANGED
1945 * Base class for any kind of program object
1950 GLubyte
*String
; /**< Null-terminated program text */
1952 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1953 GLenum Format
; /**< String encoding format */
1955 struct prog_instruction
*Instructions
;
1957 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1958 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1959 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1960 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1961 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1962 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1963 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1964 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1966 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
1969 /** Named parameters, constants, etc. from program text */
1970 struct gl_program_parameter_list
*Parameters
;
1971 /** Numbered local parameters */
1972 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1974 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1975 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1977 /** Bitmask of which register files are read/written with indirect
1978 * addressing. Mask of (1 << PROGRAM_x) bits.
1980 GLbitfield IndirectRegisterFiles
;
1982 /** Logical counts */
1984 GLuint NumInstructions
;
1985 GLuint NumTemporaries
;
1986 GLuint NumParameters
;
1987 GLuint NumAttributes
;
1988 GLuint NumAddressRegs
;
1989 GLuint NumAluInstructions
;
1990 GLuint NumTexInstructions
;
1991 GLuint NumTexIndirections
;
1993 /** Native, actual h/w counts */
1995 GLuint NumNativeInstructions
;
1996 GLuint NumNativeTemporaries
;
1997 GLuint NumNativeParameters
;
1998 GLuint NumNativeAttributes
;
1999 GLuint NumNativeAddressRegs
;
2000 GLuint NumNativeAluInstructions
;
2001 GLuint NumNativeTexInstructions
;
2002 GLuint NumNativeTexIndirections
;
2007 /** Vertex program object */
2008 struct gl_vertex_program
2010 struct gl_program Base
; /**< base class */
2011 GLboolean IsPositionInvariant
;
2012 GLboolean UsesClipDistance
;
2016 /** Geometry program object */
2017 struct gl_geometry_program
2019 struct gl_program Base
; /**< base class */
2023 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2024 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2025 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2026 GLboolean UsesClipDistance
;
2027 GLboolean UsesEndPrimitive
;
2031 /** Fragment program object */
2032 struct gl_fragment_program
2034 struct gl_program Base
; /**< base class */
2035 GLboolean UsesKill
; /**< shader uses KIL instruction */
2036 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
2037 GLboolean OriginUpperLeft
;
2038 GLboolean PixelCenterInteger
;
2039 enum gl_frag_depth_layout FragDepthLayout
;
2042 * GLSL interpolation qualifier associated with each fragment shader input.
2043 * For inputs that do not have an interpolation qualifier specified in
2044 * GLSL, the value is INTERP_QUALIFIER_NONE.
2046 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
2049 * Bitfield indicating, for each fragment shader input, 1 if that input
2050 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2052 GLbitfield64 IsCentroid
;
2057 * State common to vertex and fragment programs.
2059 struct gl_program_state
2061 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2062 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2067 * Context state for vertex programs.
2069 struct gl_vertex_program_state
2071 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2072 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2073 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2074 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2075 /** Computed two sided lighting for fixed function/programs. */
2076 GLboolean _TwoSideEnabled
;
2077 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2079 /** Currently enabled and valid vertex program (including internal
2080 * programs, user-defined vertex programs and GLSL vertex shaders).
2081 * This is the program we must use when rendering.
2083 struct gl_vertex_program
*_Current
;
2085 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2087 /** Should fixed-function T&L be implemented with a vertex prog? */
2088 GLboolean _MaintainTnlProgram
;
2090 /** Program to emulate fixed-function T&L (see above) */
2091 struct gl_vertex_program
*_TnlProgram
;
2093 /** Cache of fixed-function programs */
2094 struct gl_program_cache
*Cache
;
2096 GLboolean _Overriden
;
2101 * Context state for geometry programs.
2103 struct gl_geometry_program_state
2105 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2106 GLboolean _Enabled
; /**< Enabled and valid program? */
2107 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2109 /** Currently enabled and valid program (including internal programs
2110 * and compiled shader programs).
2112 struct gl_geometry_program
*_Current
;
2114 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2116 /** Cache of fixed-function programs */
2117 struct gl_program_cache
*Cache
;
2121 * Context state for fragment programs.
2123 struct gl_fragment_program_state
2125 GLboolean Enabled
; /**< User-set fragment program enable flag */
2126 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2127 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2129 /** Currently enabled and valid fragment program (including internal
2130 * programs, user-defined fragment programs and GLSL fragment shaders).
2131 * This is the program we must use when rendering.
2133 struct gl_fragment_program
*_Current
;
2135 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2137 /** Should fixed-function texturing be implemented with a fragment prog? */
2138 GLboolean _MaintainTexEnvProgram
;
2140 /** Program to emulate fixed-function texture env/combine (see above) */
2141 struct gl_fragment_program
*_TexEnvProgram
;
2143 /** Cache of fixed-function programs */
2144 struct gl_program_cache
*Cache
;
2149 * ATI_fragment_shader runtime state
2151 #define ATI_FS_INPUT_PRIMARY 0
2152 #define ATI_FS_INPUT_SECONDARY 1
2154 struct atifs_instruction
;
2155 struct atifs_setupinst
;
2158 * ATI fragment shader
2160 struct ati_fragment_shader
2164 struct atifs_instruction
*Instructions
[2];
2165 struct atifs_setupinst
*SetupInst
[2];
2166 GLfloat Constants
[8][4];
2167 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2168 GLubyte numArithInstr
[2];
2169 GLubyte regsAssigned
[2];
2170 GLubyte NumPasses
; /**< 1 or 2 */
2172 GLubyte last_optype
;
2173 GLboolean interpinp1
;
2179 * Context state for GL_ATI_fragment_shader
2181 struct gl_ati_fragment_shader_state
2184 GLboolean _Enabled
; /**< enabled and valid shader? */
2185 GLboolean Compiling
;
2186 GLfloat GlobalConstants
[8][4];
2187 struct ati_fragment_shader
*Current
;
2191 /** Set by #pragma directives */
2192 struct gl_sl_pragmas
2194 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2195 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2196 GLboolean Optimize
; /**< defaults on */
2197 GLboolean Debug
; /**< defaults off */
2202 * A GLSL vertex or fragment shader object.
2206 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2207 * Must be the first field.
2210 GLuint Name
; /**< AKA the handle */
2211 GLchar
*Label
; /**< GL_KHR_debug */
2212 GLint RefCount
; /**< Reference count */
2213 GLboolean DeletePending
;
2214 GLboolean CompileStatus
;
2215 const GLchar
*Source
; /**< Source code string */
2216 GLuint SourceChecksum
; /**< for debug/logging purposes */
2217 struct gl_program
*Program
; /**< Post-compile assembly code */
2219 struct gl_sl_pragmas Pragmas
;
2221 unsigned Version
; /**< GLSL version used for linking */
2222 GLboolean IsES
; /**< True if this shader uses GLSL ES */
2225 * \name Sampler tracking
2227 * \note Each of these fields is only set post-linking.
2230 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2231 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2232 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2236 * Map from sampler unit to texture unit (set by glUniform1i())
2238 * A sampler unit is associated with each sampler uniform by the linker.
2239 * The sampler unit associated with each uniform is stored in the
2240 * \c gl_uniform_storage::sampler field.
2242 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2243 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2244 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2247 * Number of default uniform block components used by this shader.
2249 * This field is only set post-linking.
2251 unsigned num_uniform_components
;
2254 * Number of combined uniform components used by this shader.
2256 * This field is only set post-linking. It is the sum of the uniform block
2257 * sizes divided by sizeof(float), and num_uniform_compoennts.
2259 unsigned num_combined_uniform_components
;
2262 * This shader's uniform block information.
2264 * The offsets of the variables are assigned only for shaders in a program's
2267 struct gl_uniform_block
*UniformBlocks
;
2268 unsigned NumUniformBlocks
;
2270 struct exec_list
*ir
;
2271 struct glsl_symbol_table
*symbols
;
2273 /** Shaders containing built-in functions that are used for linking. */
2274 struct gl_shader
*builtins_to_link
[16];
2275 unsigned num_builtins_to_link
;
2278 * Geometry shader state from GLSL 1.50 layout qualifiers.
2283 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2284 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2289 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2290 * it's not set in this shader.
2298 * Shader stages. Note that these will become 5 with tessellation.
2300 * The order must match how shaders are ordered in the pipeline.
2301 * The GLSL linker assumes that if i<j, then the j-th shader is
2302 * executed later than the i-th shader.
2306 MESA_SHADER_VERTEX
= 0,
2307 MESA_SHADER_GEOMETRY
= 1,
2308 MESA_SHADER_FRAGMENT
= 2,
2309 MESA_SHADER_TYPES
= 3
2313 struct gl_uniform_buffer_variable
2318 * Name of the uniform as seen by glGetUniformIndices.
2320 * glGetUniformIndices requires that the block instance index \b not be
2321 * present in the name of queried uniforms.
2324 * \c gl_uniform_buffer_variable::IndexName and
2325 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2329 const struct glsl_type
*Type
;
2330 unsigned int Offset
;
2335 enum gl_uniform_block_packing
2343 struct gl_uniform_block
2345 /** Declared name of the uniform block */
2348 /** Array of supplemental information about UBO ir_variables. */
2349 struct gl_uniform_buffer_variable
*Uniforms
;
2353 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2354 * with glBindBufferBase to bind a buffer object to this uniform block. When
2355 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2360 * Minimum size of a buffer object to back this uniform buffer
2361 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2363 GLuint UniformBufferSize
;
2366 * Layout specified in the shader
2368 * This isn't accessible through the API, but it is used while
2369 * cross-validating uniform blocks.
2371 enum gl_uniform_block_packing _Packing
;
2376 * A GLSL program object.
2377 * Basically a linked collection of vertex and fragment shaders.
2379 struct gl_shader_program
2381 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2382 GLuint Name
; /**< aka handle or ID */
2383 GLchar
*Label
; /**< GL_KHR_debug */
2384 GLint RefCount
; /**< Reference count */
2385 GLboolean DeletePending
;
2388 * Is the application intending to glGetProgramBinary this program?
2390 GLboolean BinaryRetreivableHint
;
2393 * Flags that the linker should not reject the program if it lacks
2394 * a vertex or fragment shader. GLES2 doesn't allow separate
2395 * shader objects, and would reject them. However, we internally
2396 * build separate shader objects for fixed function programs, which
2397 * we use for drivers/common/meta.c and for handling
2398 * _mesa_update_state with no program bound (for example in
2401 GLboolean InternalSeparateShader
;
2403 GLuint NumShaders
; /**< number of attached shaders */
2404 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2407 * User-defined attribute bindings
2409 * These are set via \c glBindAttribLocation and are used to direct the
2410 * GLSL linker. These are \b not the values used in the compiled shader,
2411 * and they are \b not the values returned by \c glGetAttribLocation.
2413 struct string_to_uint_map
*AttributeBindings
;
2416 * User-defined fragment data bindings
2418 * These are set via \c glBindFragDataLocation and are used to direct the
2419 * GLSL linker. These are \b not the values used in the compiled shader,
2420 * and they are \b not the values returned by \c glGetFragDataLocation.
2422 struct string_to_uint_map
*FragDataBindings
;
2423 struct string_to_uint_map
*FragDataIndexBindings
;
2426 * Transform feedback varyings last specified by
2427 * glTransformFeedbackVaryings().
2429 * For the current set of transform feeedback varyings used for transform
2430 * feedback output, see LinkedTransformFeedback.
2435 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2436 } TransformFeedback
;
2438 /** Post-link transform feedback info. */
2439 struct gl_transform_feedback_info LinkedTransformFeedback
;
2441 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2442 enum gl_frag_depth_layout FragDepthLayout
;
2445 * Geometry shader state - copied into gl_geometry_program by
2446 * _mesa_copy_linked_program_data().
2451 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2452 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2453 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2455 * True if gl_ClipDistance is written to. Copied into
2456 * gl_geometry_program by _mesa_copy_linked_program_data().
2458 GLboolean UsesClipDistance
;
2459 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2460 0 if not present. */
2461 GLboolean UsesEndPrimitive
;
2464 /** Vertex shader state */
2467 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2468 * by _mesa_copy_linked_program_data().
2470 GLboolean UsesClipDistance
;
2471 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2472 0 if not present. */
2475 /* post-link info: */
2476 unsigned NumUserUniformStorage
;
2477 struct gl_uniform_storage
*UniformStorage
;
2479 struct gl_uniform_block
*UniformBlocks
;
2480 unsigned NumUniformBlocks
;
2483 * Scale factor for the uniform base location
2485 * This is used to generate locations (returned by \c glGetUniformLocation)
2486 * of uniforms. The base location of the uniform is multiplied by this
2487 * value, and the array index is added.
2493 * _mesa_uniform_merge_location_offset, _mesa_uniform_split_location_offset
2495 unsigned UniformLocationBaseScale
;
2498 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2499 * they're used in, or -1.
2501 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2502 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2504 int *UniformBlockStageIndex
[MESA_SHADER_TYPES
];
2507 * Map of active uniform names to locations
2509 * Maps any active uniform that is not an array element to a location.
2510 * Each active uniform, including individual structure members will appear
2511 * in this map. This roughly corresponds to the set of names that would be
2512 * enumerated by \c glGetActiveUniform.
2514 struct string_to_uint_map
*UniformHash
;
2516 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2517 GLboolean Validated
;
2518 GLboolean _Used
; /**< Ever used for drawing? */
2521 unsigned Version
; /**< GLSL version used for linking */
2522 GLboolean IsES
; /**< True if this program uses GLSL ES */
2525 * Per-stage shaders resulting from the first stage of linking.
2527 * Set of linked shaders for this program. The array is accessed using the
2528 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2531 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2535 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2536 #define GLSL_LOG 0x2 /**< Write shaders to files */
2537 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2538 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2539 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2540 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2541 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2542 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2543 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2544 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2548 * Context state for GLSL vertex/fragment shaders.
2550 struct gl_shader_state
2553 * Programs used for rendering
2555 * There is a separate program set for each shader stage. If
2556 * GL_EXT_separate_shader_objects is not supported, each of these must point
2557 * to \c NULL or to the same program.
2559 struct gl_shader_program
*CurrentVertexProgram
;
2560 struct gl_shader_program
*CurrentGeometryProgram
;
2561 struct gl_shader_program
*CurrentFragmentProgram
;
2563 struct gl_shader_program
*_CurrentFragmentProgram
;
2566 * Program used by glUniform calls.
2568 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2570 struct gl_shader_program
*ActiveProgram
;
2572 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2577 * Compiler options for a single GLSL shaders type
2579 struct gl_shader_compiler_options
2581 /** Driver-selectable options: */
2582 GLboolean EmitCondCodes
; /**< Use condition codes? */
2583 GLboolean EmitNoLoops
;
2584 GLboolean EmitNoFunctions
;
2585 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2586 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2587 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2588 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2589 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2592 * \name Forms of indirect addressing the driver cannot do.
2595 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2596 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2597 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2598 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2601 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2602 GLuint MaxUnrollIterations
;
2605 * Prefer DP4 instructions (rather than MUL/MAD) for matrix * vector
2606 * operations, such as position transformation.
2608 GLboolean PreferDP4
;
2610 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2615 * Occlusion/timer query object.
2617 struct gl_query_object
2619 GLenum Target
; /**< The query target, when active */
2620 GLuint Id
; /**< hash table ID/name */
2621 GLchar
*Label
; /**< GL_KHR_debug */
2622 GLuint64EXT Result
; /**< the counter */
2623 GLboolean Active
; /**< inside Begin/EndQuery */
2624 GLboolean Ready
; /**< result is ready? */
2625 GLboolean EverBound
;/**< has query object ever been bound */
2630 * Context state for query objects.
2632 struct gl_query_state
2634 struct _mesa_HashTable
*QueryObjects
;
2635 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2636 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2638 /** GL_NV_conditional_render */
2639 struct gl_query_object
*CondRenderQuery
;
2641 /** GL_EXT_transform_feedback */
2642 struct gl_query_object
*PrimitivesGenerated
;
2643 struct gl_query_object
*PrimitivesWritten
;
2645 /** GL_ARB_timer_query */
2646 struct gl_query_object
*TimeElapsed
;
2648 GLenum CondRenderMode
;
2652 /** Sync object state */
2653 struct gl_sync_object
2655 GLenum Type
; /**< GL_SYNC_FENCE */
2656 GLuint Name
; /**< Fence name */
2657 GLchar
*Label
; /**< GL_KHR_debug */
2658 GLint RefCount
; /**< Reference count */
2659 GLboolean DeletePending
; /**< Object was deleted while there were still
2660 * live references (e.g., sync not yet finished)
2662 GLenum SyncCondition
;
2663 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2664 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2669 * State which can be shared by multiple contexts:
2671 struct gl_shared_state
2673 _glthread_Mutex Mutex
; /**< for thread safety */
2674 GLint RefCount
; /**< Reference count */
2675 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2676 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2678 /** Default texture objects (shared by all texture units) */
2679 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2681 /** Fallback texture used when a bound texture is incomplete */
2682 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2685 * \name Thread safety and statechange notification for texture
2688 * \todo Improve the granularity of locking.
2691 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2692 GLuint TextureStateStamp
; /**< state notification for shared tex */
2695 /** Default buffer object for vertex arrays that aren't in VBOs */
2696 struct gl_buffer_object
*NullBufferObj
;
2699 * \name Vertex/geometry/fragment programs
2702 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2703 struct gl_vertex_program
*DefaultVertexProgram
;
2704 struct gl_fragment_program
*DefaultFragmentProgram
;
2705 struct gl_geometry_program
*DefaultGeometryProgram
;
2708 /* GL_ATI_fragment_shader */
2709 struct _mesa_HashTable
*ATIShaders
;
2710 struct ati_fragment_shader
*DefaultFragmentShader
;
2712 struct _mesa_HashTable
*BufferObjects
;
2714 /** Table of both gl_shader and gl_shader_program objects */
2715 struct _mesa_HashTable
*ShaderObjects
;
2717 /* GL_EXT_framebuffer_object */
2718 struct _mesa_HashTable
*RenderBuffers
;
2719 struct _mesa_HashTable
*FrameBuffers
;
2722 struct set
*SyncObjects
;
2724 /** GL_ARB_sampler_objects */
2725 struct _mesa_HashTable
*SamplerObjects
;
2731 * Renderbuffers represent drawing surfaces such as color, depth and/or
2732 * stencil. A framebuffer object has a set of renderbuffers.
2733 * Drivers will typically derive subclasses of this type.
2735 struct gl_renderbuffer
2737 _glthread_Mutex Mutex
; /**< for thread safety */
2738 GLuint ClassID
; /**< Useful for drivers */
2740 GLchar
*Label
; /**< GL_KHR_debug */
2742 GLuint Width
, Height
;
2744 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2745 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2747 * True for renderbuffers that wrap textures, giving the driver a chance to
2748 * flush render caches through the FinishRenderTexture hook.
2750 * Drivers may also set this on renderbuffers other than those generated by
2751 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2752 * called without a rb->TexImage.
2754 GLboolean NeedsFinishRenderTexture
;
2756 GLenum InternalFormat
; /**< The user-specified format */
2757 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2758 GL_STENCIL_INDEX. */
2759 gl_format Format
; /**< The actual renderbuffer memory format */
2761 * Pointer to the texture image if this renderbuffer wraps a texture,
2764 * Note that the reference on the gl_texture_object containing this
2765 * TexImage is held by the gl_renderbuffer_attachment.
2767 struct gl_texture_image
*TexImage
;
2769 /** Delete this renderbuffer */
2770 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
2772 /** Allocate new storage for this renderbuffer */
2773 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
2774 struct gl_renderbuffer
*rb
,
2775 GLenum internalFormat
,
2776 GLuint width
, GLuint height
);
2781 * A renderbuffer attachment points to either a texture object (and specifies
2782 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2784 struct gl_renderbuffer_attachment
2786 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2790 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2791 * application supplied renderbuffer object.
2793 struct gl_renderbuffer
*Renderbuffer
;
2796 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2797 * supplied texture object.
2799 struct gl_texture_object
*Texture
;
2800 GLuint TextureLevel
; /**< Attached mipmap level. */
2801 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2802 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2803 * and 2D array textures */
2809 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2810 * In C++ terms, think of this as a base class from which device drivers
2811 * will make derived classes.
2813 struct gl_framebuffer
2815 _glthread_Mutex Mutex
; /**< for thread safety */
2817 * If zero, this is a window system framebuffer. If non-zero, this
2818 * is a FBO framebuffer; note that for some devices (i.e. those with
2819 * a natural pixel coordinate system for FBOs that differs from the
2820 * OpenGL/Mesa coordinate system), this means that the viewport,
2821 * polygon face orientation, and polygon stipple will have to be inverted.
2824 GLchar
*Label
; /**< GL_KHR_debug */
2827 GLboolean DeletePending
;
2830 * The framebuffer's visual. Immutable if this is a window system buffer.
2831 * Computed from attachments if user-made FBO.
2833 struct gl_config Visual
;
2835 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2837 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2839 GLint _Xmin
, _Xmax
; /**< inclusive */
2840 GLint _Ymin
, _Ymax
; /**< exclusive */
2843 /** \name Derived Z buffer stuff */
2845 GLuint _DepthMax
; /**< Max depth buffer value */
2846 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2847 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2850 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2853 /** Integer color values */
2854 GLboolean _IntegerColor
;
2856 /* ARB_color_buffer_float */
2857 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
2858 GLboolean _HasSNormOrFloatColorBuffer
;
2860 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2861 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2863 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2864 * attribute group and GL_PIXEL attribute group, respectively.
2866 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2867 GLenum ColorReadBuffer
;
2869 /** Computed from ColorDraw/ReadBuffer above */
2870 GLuint _NumColorDrawBuffers
;
2871 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2872 GLint _ColorReadBufferIndex
; /* -1 = None */
2873 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2874 struct gl_renderbuffer
*_ColorReadBuffer
;
2878 /** Delete this framebuffer */
2879 void (*Delete
)(struct gl_framebuffer
*fb
);
2884 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2888 GLushort RangeMin
; /**< min value exponent */
2889 GLushort RangeMax
; /**< max value exponent */
2890 GLushort Precision
; /**< number of mantissa bits */
2895 * Limits for vertex, geometry and fragment programs/shaders.
2897 struct gl_program_constants
2899 /* logical limits */
2900 GLuint MaxInstructions
;
2901 GLuint MaxAluInstructions
;
2902 GLuint MaxTexInstructions
;
2903 GLuint MaxTexIndirections
;
2906 GLuint MaxAddressRegs
;
2907 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2908 GLuint MaxParameters
;
2909 GLuint MaxLocalParams
;
2910 GLuint MaxEnvParams
;
2911 /* native/hardware limits */
2912 GLuint MaxNativeInstructions
;
2913 GLuint MaxNativeAluInstructions
;
2914 GLuint MaxNativeTexInstructions
;
2915 GLuint MaxNativeTexIndirections
;
2916 GLuint MaxNativeAttribs
;
2917 GLuint MaxNativeTemps
;
2918 GLuint MaxNativeAddressRegs
;
2919 GLuint MaxNativeParameters
;
2921 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2924 * \name Per-stage input / output limits
2926 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
2927 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
2928 * ES). This is stored as \c gl_constants::MaxVarying.
2930 * Starting with OpenGL 3.2, the limits are advertised with per-stage
2931 * variables. Each stage as a certain number of outputs that it can feed
2932 * to the next stage and a certain number inputs that it can consume from
2933 * the previous stage.
2935 * Vertex shader inputs do not participate this in this accounting.
2936 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
2938 * Fragment shader outputs do not participate this in this accounting.
2939 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
2942 GLuint MaxInputComponents
;
2943 GLuint MaxOutputComponents
;
2946 /* ES 2.0 and GL_ARB_ES2_compatibility */
2947 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2948 struct gl_precision LowInt
, MediumInt
, HighInt
;
2949 /* GL_ARB_uniform_buffer_object */
2950 GLuint MaxUniformBlocks
;
2951 GLuint MaxCombinedUniformComponents
;
2952 GLuint MaxTextureImageUnits
;
2957 * Constants which may be overridden by device driver during context creation
2958 * but are never changed after that.
2962 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
2963 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
2964 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2965 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2966 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
2967 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2968 GLuint MaxTextureCoordUnits
;
2969 GLuint MaxCombinedTextureImageUnits
;
2970 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
2971 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2972 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2973 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2975 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
2977 GLuint MaxArrayLockSize
;
2981 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2982 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2983 GLfloat PointSizeGranularity
;
2984 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2985 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2986 GLfloat LineWidthGranularity
;
2988 GLuint MaxClipPlanes
;
2990 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2991 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2993 GLuint MaxViewportWidth
, MaxViewportHeight
;
2995 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2996 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2997 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2998 GLuint MaxProgramMatrices
;
2999 GLuint MaxProgramMatrixStackDepth
;
3002 GLuint SamplesPassed
;
3005 GLuint PrimitivesGenerated
;
3006 GLuint PrimitivesWritten
;
3009 /** vertex array / buffer object bounds checking */
3010 GLboolean CheckArrayBounds
;
3012 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3014 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3015 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3016 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3018 /** Number of varying vectors between any two shader stages. */
3022 * GL_ARB_uniform_buffer_object
3024 GLuint MaxCombinedUniformBlocks
;
3025 GLuint MaxUniformBufferBindings
;
3026 GLuint MaxUniformBlockSize
;
3027 GLuint UniformBufferOffsetAlignment
;
3030 /** GL_ARB_geometry_shader4 */
3031 GLuint MaxGeometryOutputVertices
;
3032 GLuint MaxGeometryTotalOutputComponents
;
3034 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
3037 * Changes default GLSL extension behavior from "error" to "warn". It's out
3038 * of spec, but it can make some apps work that otherwise wouldn't.
3040 GLboolean ForceGLSLExtensionsWarn
;
3043 * If non-zero, forces GLSL shaders without the #version directive to behave
3044 * as if they began with "#version ForceGLSLVersion".
3046 GLuint ForceGLSLVersion
;
3049 * Does the driver support real 32-bit integers? (Otherwise, integers are
3050 * simulated via floats.)
3052 GLboolean NativeIntegers
;
3055 * If the driver supports real 32-bit integers, what integer value should be
3056 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3058 GLuint UniformBooleanTrue
;
3060 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
3061 GLbitfield SupportedBumpUnits
;
3064 * Maximum amount of time, measured in nanseconds, that the server can wait.
3066 GLuint64 MaxServerWaitTimeout
;
3068 /** GL_EXT_provoking_vertex */
3069 GLboolean QuadsFollowProvokingVertexConvention
;
3071 /** OpenGL version 3.0 */
3072 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3074 /** OpenGL version 3.2 */
3075 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3077 /** GL_EXT_transform_feedback */
3078 GLuint MaxTransformFeedbackBuffers
;
3079 GLuint MaxTransformFeedbackSeparateComponents
;
3080 GLuint MaxTransformFeedbackInterleavedComponents
;
3081 GLuint MaxVertexStreams
;
3083 /** GL_EXT_gpu_shader4 */
3084 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3086 /** GL_ARB_texture_gather */
3087 GLuint MinProgramTextureGatherOffset
;
3088 GLuint MaxProgramTextureGatherOffset
;
3089 GLuint MaxProgramTextureGatherComponents
;
3091 /* GL_ARB_robustness */
3092 GLenum ResetStrategy
;
3094 /* GL_ARB_blend_func_extended */
3095 GLuint MaxDualSourceDrawBuffers
;
3098 * Whether the implementation strips out and ignores texture borders.
3100 * Many GPU hardware implementations don't support rendering with texture
3101 * borders and mipmapped textures. (Note: not static border color, but the
3102 * old 1-pixel border around each edge). Implementations then have to do
3103 * slow fallbacks to be correct, or just ignore the border and be fast but
3104 * wrong. Setting the flag strips the border off of TexImage calls,
3105 * providing "fast but wrong" at significantly reduced driver complexity.
3107 * Texture borders are deprecated in GL 3.0.
3109 GLboolean StripTextureBorder
;
3112 * For drivers which can do a better job at eliminating unused uniforms
3113 * than the GLSL compiler.
3115 * XXX Remove these as soon as a better solution is available.
3117 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3120 * Force software support for primitive restart in the VBO module.
3122 GLboolean PrimitiveRestartInSoftware
;
3124 /** GL_ARB_map_buffer_alignment */
3125 GLuint MinMapBufferAlignment
;
3128 * Disable varying packing. This is out of spec, but potentially useful
3129 * for older platforms that supports a limited number of texture
3130 * indirections--on these platforms, unpacking the varyings in the fragment
3131 * shader increases the number of texture indirections by 1, which might
3132 * make some shaders not executable at all.
3134 * Drivers that support transform feedback must set this value to GL_FALSE.
3136 GLboolean DisableVaryingPacking
;
3139 * Maximum value supported for an index in DrawElements and friends.
3141 * This must be at least (1ull<<24)-1. The default value is
3144 * \since ES 3.0 or GL_ARB_ES3_compatibility
3145 * \sa _mesa_init_constants
3147 GLuint64 MaxElementIndex
;
3150 * Disable interpretation of line continuations (lines ending with a
3151 * backslash character ('\') in GLSL source.
3153 GLboolean DisableGLSLLineContinuations
;
3155 /** GL_ARB_texture_multisample */
3156 GLint MaxColorTextureSamples
;
3157 GLint MaxDepthTextureSamples
;
3158 GLint MaxIntegerSamples
;
3163 * Enable flag for each OpenGL extension. Different device drivers will
3164 * enable different extensions at runtime.
3166 struct gl_extensions
3168 GLboolean dummy
; /* don't remove this! */
3169 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3170 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3171 GLboolean ANGLE_texture_compression_dxt
;
3172 GLboolean ARB_ES2_compatibility
;
3173 GLboolean ARB_ES3_compatibility
;
3174 GLboolean ARB_base_instance
;
3175 GLboolean ARB_blend_func_extended
;
3176 GLboolean ARB_color_buffer_float
;
3177 GLboolean ARB_conservative_depth
;
3178 GLboolean ARB_depth_buffer_float
;
3179 GLboolean ARB_depth_clamp
;
3180 GLboolean ARB_depth_texture
;
3181 GLboolean ARB_draw_buffers_blend
;
3182 GLboolean ARB_draw_elements_base_vertex
;
3183 GLboolean ARB_draw_instanced
;
3184 GLboolean ARB_fragment_coord_conventions
;
3185 GLboolean ARB_fragment_program
;
3186 GLboolean ARB_fragment_program_shadow
;
3187 GLboolean ARB_fragment_shader
;
3188 GLboolean ARB_framebuffer_object
;
3189 GLboolean ARB_explicit_attrib_location
;
3190 GLboolean ARB_geometry_shader4
;
3191 GLboolean ARB_gpu_shader5
;
3192 GLboolean ARB_half_float_pixel
;
3193 GLboolean ARB_half_float_vertex
;
3194 GLboolean ARB_instanced_arrays
;
3195 GLboolean ARB_internalformat_query
;
3196 GLboolean ARB_map_buffer_alignment
;
3197 GLboolean ARB_map_buffer_range
;
3198 GLboolean ARB_occlusion_query
;
3199 GLboolean ARB_occlusion_query2
;
3200 GLboolean ARB_point_sprite
;
3201 GLboolean ARB_seamless_cube_map
;
3202 GLboolean ARB_shader_bit_encoding
;
3203 GLboolean ARB_shader_stencil_export
;
3204 GLboolean ARB_shader_texture_lod
;
3205 GLboolean ARB_shading_language_packing
;
3206 GLboolean ARB_shading_language_420pack
;
3207 GLboolean ARB_shadow
;
3209 GLboolean ARB_texture_border_clamp
;
3210 GLboolean ARB_texture_buffer_object
;
3211 GLboolean ARB_texture_buffer_object_rgb32
;
3212 GLboolean ARB_texture_buffer_range
;
3213 GLboolean ARB_texture_compression_rgtc
;
3214 GLboolean ARB_texture_cube_map
;
3215 GLboolean ARB_texture_cube_map_array
;
3216 GLboolean ARB_texture_env_combine
;
3217 GLboolean ARB_texture_env_crossbar
;
3218 GLboolean ARB_texture_env_dot3
;
3219 GLboolean ARB_texture_float
;
3220 GLboolean ARB_texture_gather
;
3221 GLboolean ARB_texture_mirror_clamp_to_edge
;
3222 GLboolean ARB_texture_multisample
;
3223 GLboolean ARB_texture_non_power_of_two
;
3224 GLboolean ARB_texture_query_levels
;
3225 GLboolean ARB_texture_query_lod
;
3226 GLboolean ARB_texture_rg
;
3227 GLboolean ARB_texture_rgb10_a2ui
;
3228 GLboolean ARB_timer_query
;
3229 GLboolean ARB_transform_feedback2
;
3230 GLboolean ARB_transform_feedback3
;
3231 GLboolean ARB_transform_feedback_instanced
;
3232 GLboolean ARB_uniform_buffer_object
;
3233 GLboolean ARB_vertex_program
;
3234 GLboolean ARB_vertex_shader
;
3235 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3236 GLboolean EXT_blend_color
;
3237 GLboolean EXT_blend_equation_separate
;
3238 GLboolean EXT_blend_func_separate
;
3239 GLboolean EXT_blend_minmax
;
3240 GLboolean EXT_depth_bounds_test
;
3241 GLboolean EXT_draw_buffers2
;
3242 GLboolean EXT_framebuffer_blit
;
3243 GLboolean EXT_framebuffer_multisample
;
3244 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3245 GLboolean EXT_framebuffer_sRGB
;
3246 GLboolean EXT_gpu_program_parameters
;
3247 GLboolean EXT_gpu_shader4
;
3248 GLboolean EXT_packed_depth_stencil
;
3249 GLboolean EXT_packed_float
;
3250 GLboolean EXT_pixel_buffer_object
;
3251 GLboolean EXT_point_parameters
;
3252 GLboolean EXT_provoking_vertex
;
3253 GLboolean EXT_separate_shader_objects
;
3254 GLboolean EXT_shader_integer_mix
;
3255 GLboolean EXT_stencil_two_side
;
3256 GLboolean EXT_texture3D
;
3257 GLboolean EXT_texture_array
;
3258 GLboolean EXT_texture_compression_latc
;
3259 GLboolean EXT_texture_compression_s3tc
;
3260 GLboolean EXT_texture_env_dot3
;
3261 GLboolean EXT_texture_filter_anisotropic
;
3262 GLboolean EXT_texture_integer
;
3263 GLboolean EXT_texture_mirror_clamp
;
3264 GLboolean EXT_texture_shared_exponent
;
3265 GLboolean EXT_texture_snorm
;
3266 GLboolean EXT_texture_sRGB
;
3267 GLboolean EXT_texture_sRGB_decode
;
3268 GLboolean EXT_texture_swizzle
;
3269 GLboolean EXT_transform_feedback
;
3270 GLboolean EXT_timer_query
;
3271 GLboolean EXT_vertex_array_bgra
;
3272 GLboolean OES_standard_derivatives
;
3273 /* vendor extensions */
3274 GLboolean AMD_performance_monitor
;
3275 GLboolean AMD_seamless_cubemap_per_texture
;
3276 GLboolean AMD_vertex_shader_layer
;
3277 GLboolean APPLE_object_purgeable
;
3278 GLboolean ATI_envmap_bumpmap
;
3279 GLboolean ATI_texture_compression_3dc
;
3280 GLboolean ATI_texture_mirror_once
;
3281 GLboolean ATI_texture_env_combine3
;
3282 GLboolean ATI_fragment_shader
;
3283 GLboolean ATI_separate_stencil
;
3284 GLboolean MESA_pack_invert
;
3285 GLboolean MESA_texture_array
;
3286 GLboolean MESA_ycbcr_texture
;
3287 GLboolean NV_conditional_render
;
3288 GLboolean NV_fog_distance
;
3289 GLboolean NV_fragment_program_option
;
3290 GLboolean NV_point_sprite
;
3291 GLboolean NV_primitive_restart
;
3292 GLboolean NV_texture_barrier
;
3293 GLboolean NV_texture_env_combine4
;
3294 GLboolean NV_texture_rectangle
;
3295 GLboolean TDFX_texture_compression_FXT1
;
3296 GLboolean OES_EGL_image
;
3297 GLboolean OES_draw_texture
;
3298 GLboolean OES_depth_texture_cube_map
;
3299 GLboolean OES_EGL_image_external
;
3300 GLboolean OES_compressed_ETC1_RGB8_texture
;
3301 GLboolean extension_sentinel
;
3302 /** The extension string */
3303 const GLubyte
*String
;
3304 /** Number of supported extensions */
3310 * A stack of matrices (projection, modelview, color, texture, etc).
3312 struct gl_matrix_stack
3314 GLmatrix
*Top
; /**< points into Stack */
3315 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3316 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3317 GLuint MaxDepth
; /**< size of Stack[] array */
3318 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3323 * \name Bits for image transfer operations
3324 * \sa __struct gl_contextRec::ImageTransferState.
3327 #define IMAGE_SCALE_BIAS_BIT 0x1
3328 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3329 #define IMAGE_MAP_COLOR_BIT 0x4
3330 #define IMAGE_CLAMP_BIT 0x800
3333 /** Pixel Transfer ops */
3334 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3335 IMAGE_SHIFT_OFFSET_BIT | \
3336 IMAGE_MAP_COLOR_BIT)
3339 * \name Bits to indicate what state has changed.
3342 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3343 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3344 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3345 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3346 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3347 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3348 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3349 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3350 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3351 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3352 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3353 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3354 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3355 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3356 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3357 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3358 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3359 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3360 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3361 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3362 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3363 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3364 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3365 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3366 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3367 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3368 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3369 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3370 #define _NEW_BUFFER_OBJECT (1 << 28)
3371 #define _NEW_FRAG_CLAMP (1 << 29)
3372 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3373 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3379 * Composite state flags
3382 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3388 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3398 /* This has to be included here. */
3403 * Display list flags.
3404 * Strictly this is a tnl-private concept, but it doesn't seem
3405 * worthwhile adding a tnl private structure just to hold this one bit
3408 #define DLIST_DANGLING_REFS 0x1
3411 /** Opaque declaration of display list payload data type */
3412 union gl_dlist_node
;
3416 * Provide a location where information about a display list can be
3417 * collected. Could be extended with driverPrivate structures,
3418 * etc. in the future.
3420 struct gl_display_list
3423 GLchar
*Label
; /**< GL_KHR_debug */
3424 GLbitfield Flags
; /**< DLIST_x flags */
3425 /** The dlist commands are in a linked list of nodes */
3426 union gl_dlist_node
*Head
;
3431 * State used during display list compilation and execution.
3433 struct gl_dlist_state
3435 GLuint CallDepth
; /**< Current recursion calling depth */
3437 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3438 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3439 GLuint CurrentPos
; /**< Index into current block of nodes */
3441 GLvertexformat ListVtxfmt
;
3443 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3444 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3446 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3447 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3450 /* State known to have been set by the currently-compiling display
3451 * list. Used to eliminate some redundant state changes.
3459 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3460 * to small enums suitable for use as an array index.
3463 enum mesa_debug_source
{
3464 MESA_DEBUG_SOURCE_API
,
3465 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3466 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3467 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3468 MESA_DEBUG_SOURCE_APPLICATION
,
3469 MESA_DEBUG_SOURCE_OTHER
,
3470 MESA_DEBUG_SOURCE_COUNT
3473 enum mesa_debug_type
{
3474 MESA_DEBUG_TYPE_ERROR
,
3475 MESA_DEBUG_TYPE_DEPRECATED
,
3476 MESA_DEBUG_TYPE_UNDEFINED
,
3477 MESA_DEBUG_TYPE_PORTABILITY
,
3478 MESA_DEBUG_TYPE_PERFORMANCE
,
3479 MESA_DEBUG_TYPE_OTHER
,
3480 MESA_DEBUG_TYPE_MARKER
,
3481 MESA_DEBUG_TYPE_PUSH_GROUP
,
3482 MESA_DEBUG_TYPE_POP_GROUP
,
3483 MESA_DEBUG_TYPE_COUNT
3486 enum mesa_debug_severity
{
3487 MESA_DEBUG_SEVERITY_LOW
,
3488 MESA_DEBUG_SEVERITY_MEDIUM
,
3489 MESA_DEBUG_SEVERITY_HIGH
,
3490 MESA_DEBUG_SEVERITY_NOTIFICATION
,
3491 MESA_DEBUG_SEVERITY_COUNT
3497 * An error, warning, or other piece of debug information for an application
3498 * to consume via GL_ARB_debug_output/GL_KHR_debug.
3502 enum mesa_debug_source source
;
3503 enum mesa_debug_type type
;
3505 enum mesa_debug_severity severity
;
3510 struct gl_debug_namespace
3512 struct _mesa_HashTable
*IDs
;
3513 unsigned ZeroID
; /* a HashTable won't take zero, so store its state here */
3514 /** lists of IDs in the hash table at each severity */
3515 struct simple_node Severity
[MESA_DEBUG_SEVERITY_COUNT
];
3518 struct gl_debug_state
3520 GLDEBUGPROC Callback
;
3521 const void *CallbackData
;
3522 GLboolean SyncOutput
;
3523 GLboolean DebugOutput
;
3524 GLboolean ARBCallback
; /* Used to track if current callback is of type ARB_debug_output or KHR_debug */
3525 GLboolean Defaults
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SEVERITY_COUNT
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3526 struct gl_debug_namespace Namespaces
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3527 struct gl_debug_msg Log
[MAX_DEBUG_LOGGED_MESSAGES
];
3528 struct gl_debug_msg DebugGroupMsgs
[MAX_DEBUG_GROUP_STACK_DEPTH
];
3529 GLint GroupStackDepth
;
3532 GLint NextMsgLength
; /* redundant, but copied here from Log[NextMsg].length
3533 for the sake of the offsetof() code in get.c */
3537 * Enum for the OpenGL APIs we know about and may support.
3539 * NOTE: This must match the api_enum table in
3540 * src/mesa/main/get_hash_generator.py
3544 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
3548 API_OPENGL_LAST
= API_OPENGL_CORE
3552 * Driver-specific state flags.
3554 * These are or'd with gl_context::NewDriverState to notify a driver about
3555 * a state change. The driver sets the flags at context creation and
3556 * the meaning of the bits set is opaque to core Mesa.
3558 struct gl_driver_flags
3560 /** gl_context::Array::_DrawArrays (vertex array state) */
3561 GLbitfield NewArray
;
3563 /** gl_context::TransformFeedback::CurrentObject */
3564 GLbitfield NewTransformFeedback
;
3566 /** gl_context::RasterDiscard */
3567 GLbitfield NewRasterizerDiscard
;
3570 * gl_context::UniformBufferBindings
3571 * gl_shader_program::UniformBlocks
3573 GLbitfield NewUniformBuffer
;
3576 struct gl_uniform_buffer_binding
3578 struct gl_buffer_object
*BufferObject
;
3579 /** Start of uniform block data in the buffer */
3581 /** Size of data allowed to be referenced from the buffer (in bytes) */
3584 * glBindBufferBase() indicates that the Size should be ignored and only
3585 * limited by the current size of the BufferObject.
3587 GLboolean AutomaticSize
;
3591 * Mesa rendering context.
3593 * This is the central context data structure for Mesa. Almost all
3594 * OpenGL state is contained in this structure.
3595 * Think of this as a base class from which device drivers will derive
3600 /** State possibly shared with other contexts in the address space */
3601 struct gl_shared_state
*Shared
;
3603 /** \name API function pointer tables */
3607 * The current dispatch table for non-displaylist-saving execution, either
3608 * BeginEnd or OutsideBeginEnd
3610 struct _glapi_table
*Exec
;
3612 * The normal dispatch table for non-displaylist-saving, non-begin/end
3614 struct _glapi_table
*OutsideBeginEnd
;
3615 /** The dispatch table used between glNewList() and glEndList() */
3616 struct _glapi_table
*Save
;
3618 * The dispatch table used between glBegin() and glEnd() (outside of a
3619 * display list). Only valid functions between those two are set, which is
3620 * mostly just the set in a GLvertexformat struct.
3622 struct _glapi_table
*BeginEnd
;
3624 * Tracks the current dispatch table out of the 3 above, so that it can be
3625 * re-set on glXMakeCurrent().
3627 struct _glapi_table
*CurrentDispatch
;
3630 struct gl_config Visual
;
3631 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3632 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3633 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3634 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3637 * Device driver function pointer table
3639 struct dd_function_table Driver
;
3641 /** Core/Driver constants */
3642 struct gl_constants Const
;
3644 /** \name The various 4x4 matrix stacks */
3646 struct gl_matrix_stack ModelviewMatrixStack
;
3647 struct gl_matrix_stack ProjectionMatrixStack
;
3648 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3649 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3650 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3653 /** Combined modelview and projection matrix */
3654 GLmatrix _ModelProjectMatrix
;
3656 /** \name Display lists */
3657 struct gl_dlist_state ListState
;
3659 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3660 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3662 /** Extension information */
3663 struct gl_extensions Extensions
;
3665 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3667 char *VersionString
;
3669 /** \name State attribute stack (for glPush/PopAttrib) */
3671 GLuint AttribStackDepth
;
3672 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3675 /** \name Renderer attribute groups
3677 * We define a struct for each attribute group to make pushing and popping
3678 * attributes easy. Also it's a good organization.
3681 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3682 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3683 struct gl_current_attrib Current
; /**< Current attributes */
3684 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3685 struct gl_eval_attrib Eval
; /**< Eval attributes */
3686 struct gl_fog_attrib Fog
; /**< Fog attributes */
3687 struct gl_hint_attrib Hint
; /**< Hint attributes */
3688 struct gl_light_attrib Light
; /**< Light attributes */
3689 struct gl_line_attrib Line
; /**< Line attributes */
3690 struct gl_list_attrib List
; /**< List attributes */
3691 struct gl_multisample_attrib Multisample
;
3692 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3693 struct gl_point_attrib Point
; /**< Point attributes */
3694 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3695 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3696 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3697 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3698 struct gl_texture_attrib Texture
; /**< Texture attributes */
3699 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3700 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3703 /** \name Client attribute stack */
3705 GLuint ClientAttribStackDepth
;
3706 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3709 /** \name Client attribute groups */
3711 struct gl_array_attrib Array
; /**< Vertex arrays */
3712 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3713 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3714 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3717 /** \name Other assorted state (not pushed/popped on attribute stack) */
3719 struct gl_pixelmaps PixelMaps
;
3721 struct gl_evaluators EvalMap
; /**< All evaluators */
3722 struct gl_feedback Feedback
; /**< Feedback */
3723 struct gl_selection Select
; /**< Selection */
3725 struct gl_program_state Program
; /**< general program state */
3726 struct gl_vertex_program_state VertexProgram
;
3727 struct gl_fragment_program_state FragmentProgram
;
3728 struct gl_geometry_program_state GeometryProgram
;
3729 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3731 struct gl_shader_state Shader
; /**< GLSL shader object state */
3732 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3734 struct gl_query_state Query
; /**< occlusion, timer queries */
3736 struct gl_transform_feedback_state TransformFeedback
;
3738 struct gl_perf_monitor_state PerfMonitor
;
3740 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3741 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3744 * Current GL_ARB_uniform_buffer_object binding referenced by
3745 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
3747 struct gl_buffer_object
*UniformBuffer
;
3750 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
3751 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
3752 * associated with uniform blocks by glUniformBlockBinding()'s state in the
3755 struct gl_uniform_buffer_binding
3756 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
3760 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3762 /* GL_EXT_framebuffer_object */
3763 struct gl_renderbuffer
*CurrentRenderbuffer
;
3765 GLenum ErrorValue
; /**< Last error code */
3767 /* GL_ARB_robustness */
3771 * Recognize and silence repeated error debug messages in buggy apps.
3773 const char *ErrorDebugFmtString
;
3774 GLuint ErrorDebugCount
;
3776 /* GL_ARB_debug_output/GL_KHR_debug */
3777 struct gl_debug_state Debug
;
3779 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3780 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3781 GLbitfield NewDriverState
;/**< bitwise-or of flags from DriverFlags */
3783 struct gl_driver_flags DriverFlags
;
3785 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3787 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3789 /** \name Derived state */
3790 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3791 GLfloat _EyeZDir
[3];
3792 GLfloat _ModelViewInvScale
;
3793 GLboolean _NeedEyeCoords
;
3794 GLboolean _ForceEyeCoords
;
3796 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3798 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3800 /** \name For debugging/development only */
3802 GLboolean FirstTimeCurrent
;
3805 /** software compression/decompression supported or not */
3806 GLboolean Mesa_DXTn
;
3808 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3810 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
3813 * \name Hooks for module contexts.
3815 * These will eventually live in the driver or elsewhere.
3818 void *swrast_context
;
3819 void *swsetup_context
;
3820 void *swtnl_context
;
3821 struct vbo_context
*vbo_context
;
3822 struct st_context
*st
;
3829 extern int MESA_VERBOSE
;
3830 extern int MESA_DEBUG_FLAGS
;
3831 # define MESA_FUNCTION __FUNCTION__
3833 # define MESA_VERBOSE 0
3834 # define MESA_DEBUG_FLAGS 0
3835 # define MESA_FUNCTION "a function"
3842 /** The MESA_VERBOSE var is a bitmask of these flags */
3845 VERBOSE_VARRAY
= 0x0001,
3846 VERBOSE_TEXTURE
= 0x0002,
3847 VERBOSE_MATERIAL
= 0x0004,
3848 VERBOSE_PIPELINE
= 0x0008,
3849 VERBOSE_DRIVER
= 0x0010,
3850 VERBOSE_STATE
= 0x0020,
3851 VERBOSE_API
= 0x0040,
3852 VERBOSE_DISPLAY_LIST
= 0x0100,
3853 VERBOSE_LIGHTING
= 0x0200,
3854 VERBOSE_PRIMS
= 0x0400,
3855 VERBOSE_VERTS
= 0x0800,
3856 VERBOSE_DISASSEM
= 0x1000,
3857 VERBOSE_DRAW
= 0x2000,
3858 VERBOSE_SWAPBUFFERS
= 0x4000
3862 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3865 DEBUG_SILENT
= (1 << 0),
3866 DEBUG_ALWAYS_FLUSH
= (1 << 1),
3867 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
3868 DEBUG_INCOMPLETE_FBO
= (1 << 3)
3877 #endif /* MTYPES_H */