2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
24 * OTHER DEALINGS IN THE SOFTWARE.
29 * Main Mesa data structures.
31 * Please try to mark derived values with a leading underscore ('_').
38 #include "main/glheader.h"
39 #include "main/config.h"
40 #include "glapi/glapi.h"
41 #include "math/m_matrix.h" /* GLmatrix */
42 #include "main/simple_list.h" /* struct simple_node */
43 #include "main/formats.h" /* MESA_FORMAT_COUNT */
52 * \name 64-bit extension of GLbitfield.
55 typedef GLuint64 GLbitfield64
;
57 /** Set a single bit */
58 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
59 /** Set all bits up to excluding bit b */
60 #define BITFIELD64_MASK(b) \
61 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
62 /** Set count bits starting from bit b */
63 #define BITFIELD64_RANGE(b, count) \
64 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
68 * \name Some forward type declarations
71 struct _mesa_HashTable
;
72 struct gl_attrib_node
;
73 struct gl_list_extensions
;
75 struct gl_program_cache
;
76 struct gl_texture_object
;
79 struct gl_uniform_storage
;
80 struct prog_instruction
;
81 struct gl_program_parameter_list
;
87 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
88 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
89 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
90 #define PRIM_UNKNOWN (PRIM_MAX + 2)
95 * Indexes for vertex program attributes.
96 * GL_NV_vertex_program aliases generic attributes over the conventional
97 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
98 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
99 * generic attributes are distinct/separate).
104 VERT_ATTRIB_WEIGHT
= 1,
105 VERT_ATTRIB_NORMAL
= 2,
106 VERT_ATTRIB_COLOR0
= 3,
107 VERT_ATTRIB_COLOR1
= 4,
109 VERT_ATTRIB_COLOR_INDEX
= 6,
110 VERT_ATTRIB_EDGEFLAG
= 7,
111 VERT_ATTRIB_TEX0
= 8,
112 VERT_ATTRIB_TEX1
= 9,
113 VERT_ATTRIB_TEX2
= 10,
114 VERT_ATTRIB_TEX3
= 11,
115 VERT_ATTRIB_TEX4
= 12,
116 VERT_ATTRIB_TEX5
= 13,
117 VERT_ATTRIB_TEX6
= 14,
118 VERT_ATTRIB_TEX7
= 15,
119 VERT_ATTRIB_POINT_SIZE
= 16,
120 VERT_ATTRIB_GENERIC0
= 17,
121 VERT_ATTRIB_GENERIC1
= 18,
122 VERT_ATTRIB_GENERIC2
= 19,
123 VERT_ATTRIB_GENERIC3
= 20,
124 VERT_ATTRIB_GENERIC4
= 21,
125 VERT_ATTRIB_GENERIC5
= 22,
126 VERT_ATTRIB_GENERIC6
= 23,
127 VERT_ATTRIB_GENERIC7
= 24,
128 VERT_ATTRIB_GENERIC8
= 25,
129 VERT_ATTRIB_GENERIC9
= 26,
130 VERT_ATTRIB_GENERIC10
= 27,
131 VERT_ATTRIB_GENERIC11
= 28,
132 VERT_ATTRIB_GENERIC12
= 29,
133 VERT_ATTRIB_GENERIC13
= 30,
134 VERT_ATTRIB_GENERIC14
= 31,
135 VERT_ATTRIB_GENERIC15
= 32,
140 * Symbolic constats to help iterating over
141 * specific blocks of vertex attributes.
144 * includes all fixed function attributes as well as
145 * the aliased GL_NV_vertex_program shader attributes.
147 * include the classic texture coordinate attributes.
148 * Is a subset of VERT_ATTRIB_FF.
149 * VERT_ATTRIB_GENERIC
150 * include the OpenGL 2.0+ GLSL generic shader attributes.
151 * These alias the generic GL_ARB_vertex_shader attributes.
153 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
154 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
156 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
157 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
159 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
160 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
163 * Bitflags for vertex attributes.
164 * These are used in bitfields in many places.
167 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
168 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
169 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
170 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
171 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
172 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
173 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
174 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
175 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
176 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
177 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
178 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
179 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
180 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
181 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
182 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
183 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
184 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
186 #define VERT_BIT(i) BITFIELD64_BIT(i)
187 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
189 #define VERT_BIT_FF(i) VERT_BIT(i)
190 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
191 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
192 #define VERT_BIT_TEX_ALL \
193 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
195 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
196 #define VERT_BIT_GENERIC_ALL \
197 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
202 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
203 * fragment shader inputs.
205 * Note that some of these values are not available to all pipeline stages.
207 * When this enum is updated, the following code must be updated too:
208 * - vertResults (in prog_print.c's arb_output_attrib_string())
209 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
210 * - _mesa_varying_slot_in_fs()
215 VARYING_SLOT_COL0
, /* COL0 and COL1 must be contiguous */
218 VARYING_SLOT_TEX0
, /* TEX0-TEX7 must be contiguous */
226 VARYING_SLOT_PSIZ
, /* Does not appear in FS */
227 VARYING_SLOT_BFC0
, /* Does not appear in FS */
228 VARYING_SLOT_BFC1
, /* Does not appear in FS */
229 VARYING_SLOT_EDGE
, /* Does not appear in FS */
230 VARYING_SLOT_CLIP_VERTEX
, /* Does not appear in FS */
231 VARYING_SLOT_CLIP_DIST0
,
232 VARYING_SLOT_CLIP_DIST1
,
233 VARYING_SLOT_PRIMITIVE_ID
, /* Does not appear in VS */
234 VARYING_SLOT_LAYER
, /* Appears as VS or GS output */
235 VARYING_SLOT_FACE
, /* FS only */
236 VARYING_SLOT_PNTC
, /* FS only */
237 VARYING_SLOT_VAR0
, /* First generic varying slot */
238 VARYING_SLOT_MAX
= VARYING_SLOT_VAR0
+ MAX_VARYING
243 * Bitflags for varying slots.
246 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
247 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
248 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
249 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
250 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
251 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
252 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
253 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
254 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
255 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
256 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
257 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
258 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
259 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
260 MAX_TEXTURE_COORD_UNITS)
261 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
262 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
263 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
264 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
265 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
266 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
267 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
268 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
269 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
270 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
271 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
272 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
276 /*********************************************/
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 ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
799 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
800 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
801 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
806 * Lighting attribute group (GL_LIGHT_BIT).
808 struct gl_light_attrib
810 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
811 struct gl_lightmodel Model
; /**< Lighting model */
814 * Front and back material values.
815 * Note: must call FLUSH_VERTICES() before using.
817 struct gl_material Material
;
819 GLboolean Enabled
; /**< Lighting enabled flag */
820 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
821 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
822 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
823 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
824 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
825 GLboolean ColorMaterialEnabled
;
826 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
827 GLboolean _ClampVertexColor
;
829 struct gl_light EnabledList
; /**< List sentinel */
832 * Derived state for optimizations:
835 GLboolean _NeedEyeCoords
;
836 GLboolean _NeedVertices
; /**< Use fast shader? */
837 GLfloat _BaseColor
[2][3];
843 * Line attribute group (GL_LINE_BIT).
845 struct gl_line_attrib
847 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
848 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
849 GLushort StipplePattern
; /**< Stipple pattern */
850 GLint StippleFactor
; /**< Stipple repeat factor */
851 GLfloat Width
; /**< Line width */
856 * Display list attribute group (GL_LIST_BIT).
858 struct gl_list_attrib
865 * Multisample attribute group (GL_MULTISAMPLE_BIT).
867 struct gl_multisample_attrib
870 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
871 GLboolean SampleAlphaToCoverage
;
872 GLboolean SampleAlphaToOne
;
873 GLboolean SampleCoverage
;
874 GLfloat SampleCoverageValue
;
875 GLboolean SampleCoverageInvert
;
877 /* ARB_texture_multisample / GL3.2 additions */
878 GLboolean SampleMask
;
879 GLbitfield SampleMaskValue
; /* GL spec defines this as an array but >32x MSAA is
886 * A pixelmap (see glPixelMap)
891 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
896 * Collection of all pixelmaps
900 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
901 struct gl_pixelmap GtoG
;
902 struct gl_pixelmap BtoB
;
903 struct gl_pixelmap AtoA
;
904 struct gl_pixelmap ItoR
;
905 struct gl_pixelmap ItoG
;
906 struct gl_pixelmap ItoB
;
907 struct gl_pixelmap ItoA
;
908 struct gl_pixelmap ItoI
;
909 struct gl_pixelmap StoS
;
914 * Pixel attribute group (GL_PIXEL_MODE_BIT).
916 struct gl_pixel_attrib
918 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
920 /*--- Begin Pixel Transfer State ---*/
921 /* Fields are in the order in which they're applied... */
923 /** Scale & Bias (index shift, offset) */
925 GLfloat RedBias
, RedScale
;
926 GLfloat GreenBias
, GreenScale
;
927 GLfloat BlueBias
, BlueScale
;
928 GLfloat AlphaBias
, AlphaScale
;
929 GLfloat DepthBias
, DepthScale
;
930 GLint IndexShift
, IndexOffset
;
934 /* Note: actual pixel maps are not part of this attrib group */
935 GLboolean MapColorFlag
;
936 GLboolean MapStencilFlag
;
938 /*--- End Pixel Transfer State ---*/
941 GLfloat ZoomX
, ZoomY
;
946 * Point attribute group (GL_POINT_BIT).
948 struct gl_point_attrib
950 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
951 GLfloat Size
; /**< User-specified point size */
952 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
953 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
954 GLfloat Threshold
; /**< GL_EXT_point_parameters */
955 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
956 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
957 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
958 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
959 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
964 * Polygon attribute group (GL_POLYGON_BIT).
966 struct gl_polygon_attrib
968 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
969 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
970 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
971 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
972 GLboolean CullFlag
; /**< Culling on/off flag */
973 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
974 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
975 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
976 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
977 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
978 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
979 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
980 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
985 * Scissor attributes (GL_SCISSOR_BIT).
987 struct gl_scissor_attrib
989 GLboolean Enabled
; /**< Scissor test enabled? */
990 GLint X
, Y
; /**< Lower left corner of box */
991 GLsizei Width
, Height
; /**< Size of box */
996 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
998 * Three sets of stencil data are tracked so that OpenGL 2.0,
999 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1000 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1001 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1002 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1003 * GL_EXT_stencil_two_side GL_BACK state.
1005 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1006 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1008 * The derived value \c _TestTwoSide is set when the front-face and back-face
1009 * stencil state are different.
1011 struct gl_stencil_attrib
1013 GLboolean Enabled
; /**< Enabled flag */
1014 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1015 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1016 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1017 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1018 GLboolean _TestTwoSide
;
1019 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1020 GLenum Function
[3]; /**< Stencil function */
1021 GLenum FailFunc
[3]; /**< Fail function */
1022 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1023 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1024 GLint Ref
[3]; /**< Reference value */
1025 GLuint ValueMask
[3]; /**< Value mask */
1026 GLuint WriteMask
[3]; /**< Write mask */
1027 GLuint Clear
; /**< Clear value */
1032 * An index for each type of texture object. These correspond to the GL
1033 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1034 * Note: the order is from highest priority to lowest priority.
1038 TEXTURE_2D_MULTISAMPLE_INDEX
,
1039 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1040 TEXTURE_CUBE_ARRAY_INDEX
,
1041 TEXTURE_BUFFER_INDEX
,
1042 TEXTURE_2D_ARRAY_INDEX
,
1043 TEXTURE_1D_ARRAY_INDEX
,
1044 TEXTURE_EXTERNAL_INDEX
,
1055 * Bit flags for each type of texture object
1056 * Used for Texture.Unit[]._ReallyEnabled flags.
1059 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1060 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1061 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1062 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1063 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1064 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1065 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1066 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1067 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1068 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1069 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1070 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1075 * Texture image state. Drivers will typically create a subclass of this
1076 * with extra fields for memory buffers, etc.
1078 struct gl_texture_image
1080 GLint InternalFormat
; /**< Internal format as given by the user */
1081 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1082 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1083 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1084 * GL_DEPTH_STENCIL_EXT only. Used for
1085 * choosing TexEnv arithmetic.
1087 gl_format TexFormat
; /**< The actual texture memory format */
1089 GLuint Border
; /**< 0 or 1 */
1090 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1091 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1092 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1093 GLuint Width2
; /**< = Width - 2*Border */
1094 GLuint Height2
; /**< = Height - 2*Border */
1095 GLuint Depth2
; /**< = Depth - 2*Border */
1096 GLuint WidthLog2
; /**< = log2(Width2) */
1097 GLuint HeightLog2
; /**< = log2(Height2) */
1098 GLuint DepthLog2
; /**< = log2(Depth2) */
1099 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1100 levels, computed from the dimensions */
1102 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1103 GLuint Level
; /**< Which mipmap level am I? */
1104 /** Cube map face: index into gl_texture_object::Image[] array */
1107 /** GL_ARB_texture_multisample */
1108 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1109 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1114 * Indexes for cube map faces.
1129 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1130 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1132 struct gl_sampler_object
1137 GLenum WrapS
; /**< S-axis texture image wrap mode */
1138 GLenum WrapT
; /**< T-axis texture image wrap mode */
1139 GLenum WrapR
; /**< R-axis texture image wrap mode */
1140 GLenum MinFilter
; /**< minification filter */
1141 GLenum MagFilter
; /**< magnification filter */
1142 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1143 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1144 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1145 GLfloat LodBias
; /**< OpenGL 1.4 */
1146 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1147 GLenum CompareMode
; /**< GL_ARB_shadow */
1148 GLenum CompareFunc
; /**< GL_ARB_shadow */
1149 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1150 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1155 * Texture object state. Contains the array of mipmap images, border color,
1156 * wrap modes, filter modes, and shadow/texcompare state.
1158 struct gl_texture_object
1160 _glthread_Mutex Mutex
; /**< for thread safety */
1161 GLint RefCount
; /**< reference count */
1162 GLuint Name
; /**< the user-visible texture object ID */
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 - b 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 pressure? */
1184 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1186 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1187 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1189 /** GL_ARB_texture_buffer_object */
1190 struct gl_buffer_object
*BufferObject
;
1191 GLenum BufferObjectFormat
;
1192 /** Equivalent Mesa format for BufferObjectFormat. */
1193 gl_format _BufferObjectFormat
;
1194 /** GL_ARB_texture_buffer_range */
1195 GLintptr BufferOffset
;
1196 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1198 /** GL_OES_EGL_image_external */
1199 GLint RequiredTextureImageUnits
;
1203 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1204 #define MAX_COMBINER_TERMS 4
1208 * Texture combine environment state.
1210 struct gl_tex_env_combine_state
1212 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1213 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1214 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1215 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1216 GLenum SourceA
[MAX_COMBINER_TERMS
];
1217 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1218 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1219 GLenum OperandA
[MAX_COMBINER_TERMS
];
1220 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1221 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1222 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1223 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1228 * TexGenEnabled flags.
1235 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1240 * Bit flag versions of the corresponding GL_ constants.
1243 #define TEXGEN_SPHERE_MAP 0x1
1244 #define TEXGEN_OBJ_LINEAR 0x2
1245 #define TEXGEN_EYE_LINEAR 0x4
1246 #define TEXGEN_REFLECTION_MAP_NV 0x8
1247 #define TEXGEN_NORMAL_MAP_NV 0x10
1249 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1250 TEXGEN_REFLECTION_MAP_NV | \
1251 TEXGEN_NORMAL_MAP_NV)
1252 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1253 TEXGEN_REFLECTION_MAP_NV | \
1254 TEXGEN_NORMAL_MAP_NV | \
1260 /** Tex-gen enabled for texture unit? */
1261 #define ENABLE_TEXGEN(unit) (1 << (unit))
1263 /** Non-identity texture matrix for texture unit? */
1264 #define ENABLE_TEXMAT(unit) (1 << (unit))
1268 * Texture coord generation state.
1272 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1273 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1274 GLfloat ObjectPlane
[4];
1275 GLfloat EyePlane
[4];
1280 * Texture unit state. Contains enable flags, texture environment/function/
1281 * combiners, texgen state, and pointers to current texture objects.
1283 struct gl_texture_unit
1285 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1286 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1288 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1289 GLclampf EnvColor
[4];
1290 GLfloat EnvColorUnclamped
[4];
1292 struct gl_texgen GenS
;
1293 struct gl_texgen GenT
;
1294 struct gl_texgen GenR
;
1295 struct gl_texgen GenQ
;
1296 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1297 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1299 GLfloat LodBias
; /**< for biasing mipmap levels */
1301 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1303 /** Current sampler object (GL_ARB_sampler_objects) */
1304 struct gl_sampler_object
*Sampler
;
1307 * \name GL_EXT_texture_env_combine
1309 struct gl_tex_env_combine_state Combine
;
1312 * Derived state based on \c EnvMode and the \c BaseFormat of the
1313 * currently enabled texture.
1315 struct gl_tex_env_combine_state _EnvMode
;
1318 * Currently enabled combiner state. This will point to either
1319 * \c Combine or \c _EnvMode.
1321 struct gl_tex_env_combine_state
*_CurrentCombine
;
1323 /** Current texture object pointers */
1324 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1326 /** Points to highest priority, complete and enabled texture object */
1327 struct gl_texture_object
*_Current
;
1332 * Texture attribute group (GL_TEXTURE_BIT).
1334 struct gl_texture_attrib
1336 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1337 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1339 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1341 /** GL_ARB_texture_buffer_object */
1342 struct gl_buffer_object
*BufferObject
;
1344 /** GL_ARB_seamless_cubemap */
1345 GLboolean CubeMapSeamless
;
1347 /** Texture units/samplers used by vertex or fragment texturing */
1348 GLbitfield _EnabledUnits
;
1350 /** Texture coord units/sets used for fragment texturing */
1351 GLbitfield _EnabledCoordUnits
;
1353 /** Texture coord units that have texgen enabled */
1354 GLbitfield _TexGenEnabled
;
1356 /** Texture coord units that have non-identity matrices */
1357 GLbitfield _TexMatEnabled
;
1359 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1360 GLbitfield _GenFlags
;
1365 * Data structure representing a single clip plane (e.g. one of the elements
1366 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1368 typedef GLfloat gl_clip_plane
[4];
1372 * Transformation attribute group (GL_TRANSFORM_BIT).
1374 struct gl_transform_attrib
1376 GLenum MatrixMode
; /**< Matrix mode */
1377 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1378 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1379 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1380 GLboolean Normalize
; /**< Normalize all normals? */
1381 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1382 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1383 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1385 GLfloat CullEyePos
[4];
1386 GLfloat CullObjPos
[4];
1391 * Viewport attribute group (GL_VIEWPORT_BIT).
1393 struct gl_viewport_attrib
1395 GLint X
, Y
; /**< position */
1396 GLsizei Width
, Height
; /**< size */
1397 GLfloat Near
, Far
; /**< Depth buffer range */
1398 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1403 * GL_ARB_vertex/pixel_buffer_object buffer object
1405 struct gl_buffer_object
1407 _glthread_Mutex Mutex
;
1410 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1411 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1412 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1413 /** Fields describing a mapped buffer */
1415 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1416 GLvoid
*Pointer
; /**< User-space address of mapping */
1417 GLintptr Offset
; /**< Mapped offset */
1418 GLsizeiptr Length
; /**< Mapped length */
1420 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1421 GLboolean Written
; /**< Ever written to? (for debugging) */
1422 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1427 * Client pixel packing/unpacking attributes
1429 struct gl_pixelstore_attrib
1437 GLboolean SwapBytes
;
1439 GLboolean Invert
; /**< GL_MESA_pack_invert */
1440 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1445 * Client vertex array attributes
1447 struct gl_client_array
1449 GLint Size
; /**< components per element (1,2,3,4) */
1450 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1451 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1452 GLsizei Stride
; /**< user-specified stride */
1453 GLsizei StrideB
; /**< actual stride in bytes */
1454 const GLubyte
*Ptr
; /**< Points to array data */
1455 GLboolean Enabled
; /**< Enabled flag is a boolean */
1456 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1457 GLboolean Integer
; /**< Integer-valued? */
1458 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1459 GLuint _ElementSize
; /**< size of each element in bytes */
1461 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1462 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1467 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1468 * extension, but a nice encapsulation in any case.
1470 struct gl_array_object
1472 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1476 _glthread_Mutex Mutex
;
1479 * Does the VAO use ARB semantics or Apple semantics?
1481 * There are several ways in which ARB_vertex_array_object and
1482 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1485 * - ARB VAOs require that all array data be sourced from vertex buffer
1486 * objects, but Apple VAOs do not.
1488 * - ARB VAOs require that names come from GenVertexArrays.
1490 * This flag notes which behavior governs this VAO.
1492 GLboolean ARBsemantics
;
1495 * Has this array object been bound?
1497 GLboolean EverBound
;
1499 /** Vertex attribute arrays */
1500 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1502 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1503 GLbitfield64 _Enabled
;
1506 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1507 * we can determine the max legal (in bounds) glDrawElements array index.
1511 struct gl_buffer_object
*ElementArrayBufferObj
;
1516 * Vertex array state
1518 struct gl_array_attrib
1520 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1521 struct gl_array_object
*ArrayObj
;
1523 /** The default vertex array object */
1524 struct gl_array_object
*DefaultArrayObj
;
1526 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1527 struct _mesa_HashTable
*Objects
;
1529 GLint ActiveTexture
; /**< Client Active Texture */
1530 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1531 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1534 * \name Primitive restart controls
1536 * Primitive restart is enabled if either \c PrimitiveRestart or
1537 * \c PrimitiveRestartFixedIndex is set.
1540 GLboolean PrimitiveRestart
;
1541 GLboolean PrimitiveRestartFixedIndex
;
1542 GLboolean _PrimitiveRestart
;
1543 GLuint RestartIndex
;
1546 /* GL_ARB_vertex_buffer_object */
1547 struct gl_buffer_object
*ArrayBufferObj
;
1550 * Vertex arrays as consumed by a driver.
1551 * The array pointer is set up only by the VBO module. */
1552 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1557 * Feedback buffer state
1562 GLbitfield _Mask
; /**< FB_* bits */
1570 * Selection buffer state
1574 GLuint
*Buffer
; /**< selection buffer */
1575 GLuint BufferSize
; /**< size of the selection buffer */
1576 GLuint BufferCount
; /**< number of values in the selection buffer */
1577 GLuint Hits
; /**< number of records in the selection buffer */
1578 GLuint NameStackDepth
; /**< name stack depth */
1579 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1580 GLboolean HitFlag
; /**< hit flag */
1581 GLfloat HitMinZ
; /**< minimum hit depth */
1582 GLfloat HitMaxZ
; /**< maximum hit depth */
1587 * 1-D Evaluator control points
1591 GLuint Order
; /**< Number of control points */
1592 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1593 GLfloat
*Points
; /**< Points to contiguous control points */
1598 * 2-D Evaluator control points
1602 GLuint Uorder
; /**< Number of control points in U dimension */
1603 GLuint Vorder
; /**< Number of control points in V dimension */
1606 GLfloat
*Points
; /**< Points to contiguous control points */
1611 * All evaluator control point state
1613 struct gl_evaluators
1619 struct gl_1d_map Map1Vertex3
;
1620 struct gl_1d_map Map1Vertex4
;
1621 struct gl_1d_map Map1Index
;
1622 struct gl_1d_map Map1Color4
;
1623 struct gl_1d_map Map1Normal
;
1624 struct gl_1d_map Map1Texture1
;
1625 struct gl_1d_map Map1Texture2
;
1626 struct gl_1d_map Map1Texture3
;
1627 struct gl_1d_map Map1Texture4
;
1634 struct gl_2d_map Map2Vertex3
;
1635 struct gl_2d_map Map2Vertex4
;
1636 struct gl_2d_map Map2Index
;
1637 struct gl_2d_map Map2Color4
;
1638 struct gl_2d_map Map2Normal
;
1639 struct gl_2d_map Map2Texture1
;
1640 struct gl_2d_map Map2Texture2
;
1641 struct gl_2d_map Map2Texture3
;
1642 struct gl_2d_map Map2Texture4
;
1647 struct gl_transform_feedback_varying_info
1656 * Per-output info vertex shaders for transform feedback.
1658 struct gl_transform_feedback_output
1660 unsigned OutputRegister
;
1661 unsigned OutputBuffer
;
1662 unsigned NumComponents
;
1664 /** offset (in DWORDs) of this output within the interleaved structure */
1668 * Offset into the output register of the data to output. For example,
1669 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1670 * offset is in the y and z components of the output register.
1672 unsigned ComponentOffset
;
1676 /** Post-link transform feedback info. */
1677 struct gl_transform_feedback_info
1679 unsigned NumOutputs
;
1682 * Number of transform feedback buffers in use by this program.
1684 unsigned NumBuffers
;
1686 struct gl_transform_feedback_output
*Outputs
;
1688 /** Transform feedback varyings used for the linking of this shader program.
1690 * Use for glGetTransformFeedbackVarying().
1692 struct gl_transform_feedback_varying_info
*Varyings
;
1696 * Total number of components stored in each buffer. This may be used by
1697 * hardware back-ends to determine the correct stride when interleaving
1698 * multiple transform feedback outputs in the same buffer.
1700 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1705 * Transform feedback object state
1707 struct gl_transform_feedback_object
1709 GLuint Name
; /**< AKA the object ID */
1711 GLboolean Active
; /**< Is transform feedback enabled? */
1712 GLboolean Paused
; /**< Is transform feedback paused? */
1713 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1715 GLboolean EverBound
; /**< Has this object been bound? */
1718 * GLES: if Active is true, remaining number of primitives which can be
1719 * rendered without overflow. This is necessary to track because GLES
1720 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1721 * glDrawArraysInstanced would overflow transform feedback buffers.
1722 * Undefined if Active is false.
1724 * Not tracked for desktop GL since it's unnecessary.
1726 unsigned GlesRemainingPrims
;
1728 /** The feedback buffers */
1729 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1730 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1732 /** Start of feedback data in dest buffer */
1733 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1736 * Max data to put into dest buffer (in bytes). Computed based on
1737 * RequestedSize and the actual size of the buffer.
1739 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1742 * Size that was specified when the buffer was bound. If the buffer was
1743 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1746 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1751 * Context state for transform feedback.
1753 struct gl_transform_feedback_state
1755 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1757 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1758 struct gl_buffer_object
*CurrentBuffer
;
1760 /** The table of all transform feedback objects */
1761 struct _mesa_HashTable
*Objects
;
1763 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1764 struct gl_transform_feedback_object
*CurrentObject
;
1766 /** The default xform-fb object (Name==0) */
1767 struct gl_transform_feedback_object
*DefaultObject
;
1772 * Names of the various vertex/fragment program register files, etc.
1774 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1775 * All values should fit in a 4-bit field.
1777 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR,
1778 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1779 * be "uniform" variables since they can only be set outside glBegin/End.
1780 * They're also all stored in the same Parameters array.
1784 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1785 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1786 PROGRAM_INPUT
, /**< machine->Inputs[] */
1787 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1788 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1789 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1790 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1791 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1792 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1793 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1794 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1795 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1796 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1797 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1803 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1804 * one of these values.
1808 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1809 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1810 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1811 SYSTEM_VALUE_MAX
/**< Number of values */
1816 * The possible interpolation qualifiers that can be applied to a fragment
1817 * shader input in GLSL.
1819 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1820 * gl_fragment_program data structure to 0 causes the default behavior.
1822 enum glsl_interp_qualifier
1824 INTERP_QUALIFIER_NONE
= 0,
1825 INTERP_QUALIFIER_SMOOTH
,
1826 INTERP_QUALIFIER_FLAT
,
1827 INTERP_QUALIFIER_NOPERSPECTIVE
,
1828 INTERP_QUALIFIER_COUNT
/**< Number of interpolation qualifiers */
1833 * \brief Layout qualifiers for gl_FragDepth.
1835 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
1836 * a layout qualifier.
1838 * \see enum ir_depth_layout
1840 enum gl_frag_depth_layout
1842 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
1843 FRAG_DEPTH_LAYOUT_ANY
,
1844 FRAG_DEPTH_LAYOUT_GREATER
,
1845 FRAG_DEPTH_LAYOUT_LESS
,
1846 FRAG_DEPTH_LAYOUT_UNCHANGED
1851 * Base class for any kind of program object
1856 GLubyte
*String
; /**< Null-terminated program text */
1858 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB */
1859 GLenum Format
; /**< String encoding format */
1861 struct prog_instruction
*Instructions
;
1863 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1864 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1865 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1866 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1867 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1868 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1869 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1870 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1873 /** Named parameters, constants, etc. from program text */
1874 struct gl_program_parameter_list
*Parameters
;
1875 /** Numbered local parameters */
1876 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1878 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1879 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1881 /** Bitmask of which register files are read/written with indirect
1882 * addressing. Mask of (1 << PROGRAM_x) bits.
1884 GLbitfield IndirectRegisterFiles
;
1886 /** Logical counts */
1888 GLuint NumInstructions
;
1889 GLuint NumTemporaries
;
1890 GLuint NumParameters
;
1891 GLuint NumAttributes
;
1892 GLuint NumAddressRegs
;
1893 GLuint NumAluInstructions
;
1894 GLuint NumTexInstructions
;
1895 GLuint NumTexIndirections
;
1897 /** Native, actual h/w counts */
1899 GLuint NumNativeInstructions
;
1900 GLuint NumNativeTemporaries
;
1901 GLuint NumNativeParameters
;
1902 GLuint NumNativeAttributes
;
1903 GLuint NumNativeAddressRegs
;
1904 GLuint NumNativeAluInstructions
;
1905 GLuint NumNativeTexInstructions
;
1906 GLuint NumNativeTexIndirections
;
1911 /** Vertex program object */
1912 struct gl_vertex_program
1914 struct gl_program Base
; /**< base class */
1915 GLboolean IsPositionInvariant
;
1916 GLboolean UsesClipDistance
;
1920 /** Geometry program object */
1921 struct gl_geometry_program
1923 struct gl_program Base
; /**< base class */
1926 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1927 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1928 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1932 /** Fragment program object */
1933 struct gl_fragment_program
1935 struct gl_program Base
; /**< base class */
1936 GLboolean UsesKill
; /**< shader uses KIL instruction */
1937 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
1938 GLboolean OriginUpperLeft
;
1939 GLboolean PixelCenterInteger
;
1940 enum gl_frag_depth_layout FragDepthLayout
;
1943 * GLSL interpolation qualifier associated with each fragment shader input.
1944 * For inputs that do not have an interpolation qualifier specified in
1945 * GLSL, the value is INTERP_QUALIFIER_NONE.
1947 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
1950 * Bitfield indicating, for each fragment shader input, 1 if that input
1951 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
1953 GLbitfield64 IsCentroid
;
1958 * State common to vertex and fragment programs.
1960 struct gl_program_state
1962 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1963 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1968 * Context state for vertex programs.
1970 struct gl_vertex_program_state
1972 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1973 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1974 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1975 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1976 /** Computed two sided lighting for fixed function/programs. */
1977 GLboolean _TwoSideEnabled
;
1978 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1980 /** Currently enabled and valid vertex program (including internal
1981 * programs, user-defined vertex programs and GLSL vertex shaders).
1982 * This is the program we must use when rendering.
1984 struct gl_vertex_program
*_Current
;
1986 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1988 /** Should fixed-function T&L be implemented with a vertex prog? */
1989 GLboolean _MaintainTnlProgram
;
1991 /** Program to emulate fixed-function T&L (see above) */
1992 struct gl_vertex_program
*_TnlProgram
;
1994 /** Cache of fixed-function programs */
1995 struct gl_program_cache
*Cache
;
1997 GLboolean _Overriden
;
2002 * Context state for geometry programs.
2004 struct gl_geometry_program_state
2006 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2007 GLboolean _Enabled
; /**< Enabled and valid program? */
2008 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2010 /** Currently enabled and valid program (including internal programs
2011 * and compiled shader programs).
2013 struct gl_geometry_program
*_Current
;
2015 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2017 /** Cache of fixed-function programs */
2018 struct gl_program_cache
*Cache
;
2022 * Context state for fragment programs.
2024 struct gl_fragment_program_state
2026 GLboolean Enabled
; /**< User-set fragment program enable flag */
2027 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2028 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2030 /** Currently enabled and valid fragment program (including internal
2031 * programs, user-defined fragment programs and GLSL fragment shaders).
2032 * This is the program we must use when rendering.
2034 struct gl_fragment_program
*_Current
;
2036 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2038 /** Should fixed-function texturing be implemented with a fragment prog? */
2039 GLboolean _MaintainTexEnvProgram
;
2041 /** Program to emulate fixed-function texture env/combine (see above) */
2042 struct gl_fragment_program
*_TexEnvProgram
;
2044 /** Cache of fixed-function programs */
2045 struct gl_program_cache
*Cache
;
2050 * ATI_fragment_shader runtime state
2052 #define ATI_FS_INPUT_PRIMARY 0
2053 #define ATI_FS_INPUT_SECONDARY 1
2055 struct atifs_instruction
;
2056 struct atifs_setupinst
;
2059 * ATI fragment shader
2061 struct ati_fragment_shader
2065 struct atifs_instruction
*Instructions
[2];
2066 struct atifs_setupinst
*SetupInst
[2];
2067 GLfloat Constants
[8][4];
2068 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2069 GLubyte numArithInstr
[2];
2070 GLubyte regsAssigned
[2];
2071 GLubyte NumPasses
; /**< 1 or 2 */
2073 GLubyte last_optype
;
2074 GLboolean interpinp1
;
2080 * Context state for GL_ATI_fragment_shader
2082 struct gl_ati_fragment_shader_state
2085 GLboolean _Enabled
; /**< enabled and valid shader? */
2086 GLboolean Compiling
;
2087 GLfloat GlobalConstants
[8][4];
2088 struct ati_fragment_shader
*Current
;
2092 /** Set by #pragma directives */
2093 struct gl_sl_pragmas
2095 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2096 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2097 GLboolean Optimize
; /**< defaults on */
2098 GLboolean Debug
; /**< defaults off */
2103 * A GLSL vertex or fragment shader object.
2107 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2108 GLuint Name
; /**< AKA the handle */
2109 GLint RefCount
; /**< Reference count */
2110 GLboolean DeletePending
;
2111 GLboolean CompileStatus
;
2112 const GLchar
*Source
; /**< Source code string */
2113 GLuint SourceChecksum
; /**< for debug/logging purposes */
2114 struct gl_program
*Program
; /**< Post-compile assembly code */
2116 struct gl_sl_pragmas Pragmas
;
2118 unsigned Version
; /**< GLSL version used for linking */
2119 GLboolean IsES
; /**< True if this shader uses GLSL ES */
2122 * \name Sampler tracking
2124 * \note Each of these fields is only set post-linking.
2127 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2128 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2129 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2133 * Map from sampler unit to texture unit (set by glUniform1i())
2135 * A sampler unit is associated with each sampler uniform by the linker.
2136 * The sampler unit associated with each uniform is stored in the
2137 * \c gl_uniform_storage::sampler field.
2139 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2140 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2141 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2144 * Number of uniform components used by this shader.
2146 * This field is only set post-linking.
2148 unsigned num_uniform_components
;
2151 * This shader's uniform block information.
2153 * The offsets of the variables are assigned only for shaders in a program's
2156 struct gl_uniform_block
*UniformBlocks
;
2157 unsigned NumUniformBlocks
;
2159 struct exec_list
*ir
;
2160 struct glsl_symbol_table
*symbols
;
2162 /** Shaders containing built-in functions that are used for linking. */
2163 struct gl_shader
*builtins_to_link
[16];
2164 unsigned num_builtins_to_link
;
2169 * Shader stages. Note that these will become 5 with tessellation.
2170 * These MUST have the same values as gallium's PIPE_SHADER_*
2174 MESA_SHADER_VERTEX
= 0,
2175 MESA_SHADER_FRAGMENT
= 1,
2176 MESA_SHADER_GEOMETRY
= 2,
2177 MESA_SHADER_TYPES
= 3
2180 struct gl_uniform_buffer_variable
2185 * Name of the uniform as seen by glGetUniformIndices.
2187 * glGetUniformIndices requires that the block instance index \b not be
2188 * present in the name of queried uniforms.
2191 * \c gl_uniform_buffer_variable::IndexName and
2192 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2196 const struct glsl_type
*Type
;
2197 unsigned int Offset
;
2201 enum gl_uniform_block_packing
{
2207 struct gl_uniform_block
2209 /** Declared name of the uniform block */
2212 /** Array of supplemental information about UBO ir_variables. */
2213 struct gl_uniform_buffer_variable
*Uniforms
;
2217 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2218 * with glBindBufferBase to bind a buffer object to this uniform block. When
2219 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2224 * Minimum size of a buffer object to back this uniform buffer
2225 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2227 GLuint UniformBufferSize
;
2230 * Layout specified in the shader
2232 * This isn't accessible through the API, but it is used while
2233 * cross-validating uniform blocks.
2235 enum gl_uniform_block_packing _Packing
;
2239 * A GLSL program object.
2240 * Basically a linked collection of vertex and fragment shaders.
2242 struct gl_shader_program
2244 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2245 GLuint Name
; /**< aka handle or ID */
2246 GLint RefCount
; /**< Reference count */
2247 GLboolean DeletePending
;
2250 * Is the application intending to glGetProgramBinary this program?
2252 GLboolean BinaryRetreivableHint
;
2255 * Flags that the linker should not reject the program if it lacks
2256 * a vertex or fragment shader. GLES2 doesn't allow separate
2257 * shader objects, and would reject them. However, we internally
2258 * build separate shader objects for fixed function programs, which
2259 * we use for drivers/common/meta.c and for handling
2260 * _mesa_update_state with no program bound (for example in
2263 GLboolean InternalSeparateShader
;
2265 GLuint NumShaders
; /**< number of attached shaders */
2266 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2269 * User-defined attribute bindings
2271 * These are set via \c glBindAttribLocation and are used to direct the
2272 * GLSL linker. These are \b not the values used in the compiled shader,
2273 * and they are \b not the values returned by \c glGetAttribLocation.
2275 struct string_to_uint_map
*AttributeBindings
;
2278 * User-defined fragment data bindings
2280 * These are set via \c glBindFragDataLocation and are used to direct the
2281 * GLSL linker. These are \b not the values used in the compiled shader,
2282 * and they are \b not the values returned by \c glGetFragDataLocation.
2284 struct string_to_uint_map
*FragDataBindings
;
2285 struct string_to_uint_map
*FragDataIndexBindings
;
2288 * Transform feedback varyings last specified by
2289 * glTransformFeedbackVaryings().
2291 * For the current set of transform feeedback varyings used for transform
2292 * feedback output, see LinkedTransformFeedback.
2297 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2298 } TransformFeedback
;
2300 /** Post-link transform feedback info. */
2301 struct gl_transform_feedback_info LinkedTransformFeedback
;
2303 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2304 enum gl_frag_depth_layout FragDepthLayout
;
2306 /** Geometry shader state - copied into gl_geometry_program at link time */
2309 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2310 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2311 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2314 /** Vertex shader state - copied into gl_vertex_program at link time */
2316 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2317 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2318 0 if not present. */
2321 /* post-link info: */
2322 unsigned NumUserUniformStorage
;
2323 struct gl_uniform_storage
*UniformStorage
;
2325 struct gl_uniform_block
*UniformBlocks
;
2326 unsigned NumUniformBlocks
;
2329 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2330 * they're used in, or -1.
2332 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2333 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2335 int *UniformBlockStageIndex
[MESA_SHADER_TYPES
];
2338 * Map of active uniform names to locations
2340 * Maps any active uniform that is not an array element to a location.
2341 * Each active uniform, including individual structure members will appear
2342 * in this map. This roughly corresponds to the set of names that would be
2343 * enumerated by \c glGetActiveUniform.
2345 struct string_to_uint_map
*UniformHash
;
2347 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2348 GLboolean Validated
;
2349 GLboolean _Used
; /**< Ever used for drawing? */
2352 unsigned Version
; /**< GLSL version used for linking */
2353 GLboolean IsES
; /**< True if this program uses GLSL ES */
2356 * Per-stage shaders resulting from the first stage of linking.
2358 * Set of linked shaders for this program. The array is accessed using the
2359 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2362 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2366 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2367 #define GLSL_LOG 0x2 /**< Write shaders to files */
2368 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2369 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2370 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2371 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2372 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2373 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2374 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2378 * Context state for GLSL vertex/fragment shaders.
2380 struct gl_shader_state
2383 * Programs used for rendering
2385 * There is a separate program set for each shader stage. If
2386 * GL_EXT_separate_shader_objects is not supported, each of these must point
2387 * to \c NULL or to the same program.
2389 struct gl_shader_program
*CurrentVertexProgram
;
2390 struct gl_shader_program
*CurrentGeometryProgram
;
2391 struct gl_shader_program
*CurrentFragmentProgram
;
2393 struct gl_shader_program
*_CurrentFragmentProgram
;
2396 * Program used by glUniform calls.
2398 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2400 struct gl_shader_program
*ActiveProgram
;
2402 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2407 * Compiler options for a single GLSL shaders type
2409 struct gl_shader_compiler_options
2411 /** Driver-selectable options: */
2412 GLboolean EmitCondCodes
; /**< Use condition codes? */
2413 GLboolean EmitNoLoops
;
2414 GLboolean EmitNoFunctions
;
2415 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2416 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2417 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2418 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2419 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2422 * \name Forms of indirect addressing the driver cannot do.
2425 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2426 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2427 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2428 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2431 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2432 GLuint MaxUnrollIterations
;
2435 * Prefer DP4 instructions (rather than MUL/MAD) for matrix * vector
2436 * operations, such as position transformation.
2438 GLboolean PreferDP4
;
2440 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2445 * Occlusion/timer query object.
2447 struct gl_query_object
2449 GLenum Target
; /**< The query target, when active */
2450 GLuint Id
; /**< hash table ID/name */
2451 GLuint64EXT Result
; /**< the counter */
2452 GLboolean Active
; /**< inside Begin/EndQuery */
2453 GLboolean Ready
; /**< result is ready? */
2454 GLboolean EverBound
;/**< has query object ever been bound */
2459 * Context state for query objects.
2461 struct gl_query_state
2463 struct _mesa_HashTable
*QueryObjects
;
2464 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2465 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2467 /** GL_NV_conditional_render */
2468 struct gl_query_object
*CondRenderQuery
;
2470 /** GL_EXT_transform_feedback */
2471 struct gl_query_object
*PrimitivesGenerated
;
2472 struct gl_query_object
*PrimitivesWritten
;
2474 /** GL_ARB_timer_query */
2475 struct gl_query_object
*TimeElapsed
;
2477 GLenum CondRenderMode
;
2481 /** Sync object state */
2482 struct gl_sync_object
2484 GLenum Type
; /**< GL_SYNC_FENCE */
2485 GLuint Name
; /**< Fence name */
2486 GLint RefCount
; /**< Reference count */
2487 GLboolean DeletePending
; /**< Object was deleted while there were still
2488 * live references (e.g., sync not yet finished)
2490 GLenum SyncCondition
;
2491 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2492 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2497 * State which can be shared by multiple contexts:
2499 struct gl_shared_state
2501 _glthread_Mutex Mutex
; /**< for thread safety */
2502 GLint RefCount
; /**< Reference count */
2503 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2504 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2506 /** Default texture objects (shared by all texture units) */
2507 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2509 /** Fallback texture used when a bound texture is incomplete */
2510 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2513 * \name Thread safety and statechange notification for texture
2516 * \todo Improve the granularity of locking.
2519 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2520 GLuint TextureStateStamp
; /**< state notification for shared tex */
2523 /** Default buffer object for vertex arrays that aren't in VBOs */
2524 struct gl_buffer_object
*NullBufferObj
;
2527 * \name Vertex/geometry/fragment programs
2530 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2531 struct gl_vertex_program
*DefaultVertexProgram
;
2532 struct gl_fragment_program
*DefaultFragmentProgram
;
2533 struct gl_geometry_program
*DefaultGeometryProgram
;
2536 /* GL_ATI_fragment_shader */
2537 struct _mesa_HashTable
*ATIShaders
;
2538 struct ati_fragment_shader
*DefaultFragmentShader
;
2540 struct _mesa_HashTable
*BufferObjects
;
2542 /** Table of both gl_shader and gl_shader_program objects */
2543 struct _mesa_HashTable
*ShaderObjects
;
2545 /* GL_EXT_framebuffer_object */
2546 struct _mesa_HashTable
*RenderBuffers
;
2547 struct _mesa_HashTable
*FrameBuffers
;
2550 struct set
*SyncObjects
;
2552 /** GL_ARB_sampler_objects */
2553 struct _mesa_HashTable
*SamplerObjects
;
2559 * Renderbuffers represent drawing surfaces such as color, depth and/or
2560 * stencil. A framebuffer object has a set of renderbuffers.
2561 * Drivers will typically derive subclasses of this type.
2563 struct gl_renderbuffer
2565 _glthread_Mutex Mutex
; /**< for thread safety */
2566 GLuint ClassID
; /**< Useful for drivers */
2569 GLuint Width
, Height
;
2571 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2572 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2574 * True for renderbuffers that wrap textures, giving the driver a chance to
2575 * flush render caches through the FinishRenderTexture hook.
2577 * Drivers may also set this on renderbuffers other than those generated by
2578 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2579 * called without a rb->TexImage.
2581 GLboolean NeedsFinishRenderTexture
;
2583 GLenum InternalFormat
; /**< The user-specified format */
2584 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2585 GL_STENCIL_INDEX. */
2586 gl_format Format
; /**< The actual renderbuffer memory format */
2588 * Pointer to the texture image if this renderbuffer wraps a texture,
2591 * Note that the reference on the gl_texture_object containing this
2592 * TexImage is held by the gl_renderbuffer_attachment.
2594 struct gl_texture_image
*TexImage
;
2596 /** Delete this renderbuffer */
2597 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
2599 /** Allocate new storage for this renderbuffer */
2600 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
2601 struct gl_renderbuffer
*rb
,
2602 GLenum internalFormat
,
2603 GLuint width
, GLuint height
);
2608 * A renderbuffer attachment points to either a texture object (and specifies
2609 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2611 struct gl_renderbuffer_attachment
2613 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2617 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2618 * application supplied renderbuffer object.
2620 struct gl_renderbuffer
*Renderbuffer
;
2623 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2624 * supplied texture object.
2626 struct gl_texture_object
*Texture
;
2627 GLuint TextureLevel
; /**< Attached mipmap level. */
2628 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2629 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2630 * and 2D array textures */
2636 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2637 * In C++ terms, think of this as a base class from which device drivers
2638 * will make derived classes.
2640 struct gl_framebuffer
2642 _glthread_Mutex Mutex
; /**< for thread safety */
2644 * If zero, this is a window system framebuffer. If non-zero, this
2645 * is a FBO framebuffer; note that for some devices (i.e. those with
2646 * a natural pixel coordinate system for FBOs that differs from the
2647 * OpenGL/Mesa coordinate system), this means that the viewport,
2648 * polygon face orientation, and polygon stipple will have to be inverted.
2653 GLboolean DeletePending
;
2656 * The framebuffer's visual. Immutable if this is a window system buffer.
2657 * Computed from attachments if user-made FBO.
2659 struct gl_config Visual
;
2661 GLboolean Initialized
;
2663 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2665 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2667 GLint _Xmin
, _Xmax
; /**< inclusive */
2668 GLint _Ymin
, _Ymax
; /**< exclusive */
2671 /** \name Derived Z buffer stuff */
2673 GLuint _DepthMax
; /**< Max depth buffer value */
2674 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2675 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2678 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2681 /** Integer color values */
2682 GLboolean _IntegerColor
;
2684 /* ARB_color_buffer_float */
2685 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
2686 GLboolean _HasSNormOrFloatColorBuffer
;
2688 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2689 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2691 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2692 * attribute group and GL_PIXEL attribute group, respectively.
2694 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2695 GLenum ColorReadBuffer
;
2697 /** Computed from ColorDraw/ReadBuffer above */
2698 GLuint _NumColorDrawBuffers
;
2699 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2700 GLint _ColorReadBufferIndex
; /* -1 = None */
2701 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2702 struct gl_renderbuffer
*_ColorReadBuffer
;
2706 /** Delete this framebuffer */
2707 void (*Delete
)(struct gl_framebuffer
*fb
);
2712 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2716 GLushort RangeMin
; /**< min value exponent */
2717 GLushort RangeMax
; /**< max value exponent */
2718 GLushort Precision
; /**< number of mantissa bits */
2723 * Limits for vertex, geometry and fragment programs/shaders.
2725 struct gl_program_constants
2727 /* logical limits */
2728 GLuint MaxInstructions
;
2729 GLuint MaxAluInstructions
;
2730 GLuint MaxTexInstructions
;
2731 GLuint MaxTexIndirections
;
2734 GLuint MaxAddressRegs
;
2735 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2736 GLuint MaxParameters
;
2737 GLuint MaxLocalParams
;
2738 GLuint MaxEnvParams
;
2739 /* native/hardware limits */
2740 GLuint MaxNativeInstructions
;
2741 GLuint MaxNativeAluInstructions
;
2742 GLuint MaxNativeTexInstructions
;
2743 GLuint MaxNativeTexIndirections
;
2744 GLuint MaxNativeAttribs
;
2745 GLuint MaxNativeTemps
;
2746 GLuint MaxNativeAddressRegs
;
2747 GLuint MaxNativeParameters
;
2749 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2750 /* ES 2.0 and GL_ARB_ES2_compatibility */
2751 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2752 struct gl_precision LowInt
, MediumInt
, HighInt
;
2753 /* GL_ARB_uniform_buffer_object */
2754 GLuint MaxUniformBlocks
;
2755 GLuint MaxCombinedUniformComponents
;
2756 GLuint MaxTextureImageUnits
;
2761 * Constants which may be overridden by device driver during context creation
2762 * but are never changed after that.
2766 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
2767 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
2768 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2769 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2770 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
2771 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2772 GLuint MaxTextureCoordUnits
;
2773 GLuint MaxCombinedTextureImageUnits
;
2774 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
2775 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2776 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2777 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2779 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
2781 GLuint MaxArrayLockSize
;
2785 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2786 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2787 GLfloat PointSizeGranularity
;
2788 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2789 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2790 GLfloat LineWidthGranularity
;
2792 GLuint MaxClipPlanes
;
2794 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2795 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2797 GLuint MaxViewportWidth
, MaxViewportHeight
;
2799 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2800 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2801 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2802 GLuint MaxProgramMatrices
;
2803 GLuint MaxProgramMatrixStackDepth
;
2806 GLuint SamplesPassed
;
2809 GLuint PrimitivesGenerated
;
2810 GLuint PrimitivesWritten
;
2813 /** vertex array / buffer object bounds checking */
2814 GLboolean CheckArrayBounds
;
2816 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2818 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2819 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2820 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2822 /** Number of varying vectors between any two shader stages. */
2824 GLuint MaxVaryingComponents
;
2827 * GL_ARB_uniform_buffer_object
2829 GLuint MaxCombinedUniformBlocks
;
2830 GLuint MaxUniformBufferBindings
;
2831 GLuint MaxUniformBlockSize
;
2832 GLuint UniformBufferOffsetAlignment
;
2835 /** GL_ARB_geometry_shader4 */
2836 GLuint MaxGeometryOutputVertices
;
2837 GLuint MaxGeometryTotalOutputComponents
;
2839 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2842 * Changes default GLSL extension behavior from "error" to "warn". It's out
2843 * of spec, but it can make some apps work that otherwise wouldn't.
2845 GLboolean ForceGLSLExtensionsWarn
;
2848 * Does the driver support real 32-bit integers? (Otherwise, integers are
2849 * simulated via floats.)
2851 GLboolean NativeIntegers
;
2854 * If the driver supports real 32-bit integers, what integer value should be
2855 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2857 GLuint UniformBooleanTrue
;
2859 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2860 GLbitfield SupportedBumpUnits
;
2863 * Maximum amount of time, measured in nanseconds, that the server can wait.
2865 GLuint64 MaxServerWaitTimeout
;
2867 /** GL_EXT_provoking_vertex */
2868 GLboolean QuadsFollowProvokingVertexConvention
;
2870 /** OpenGL version 3.0 */
2871 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2873 /** OpenGL version 3.2 */
2874 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2876 /** GL_EXT_transform_feedback */
2877 GLuint MaxTransformFeedbackBuffers
;
2878 GLuint MaxTransformFeedbackSeparateComponents
;
2879 GLuint MaxTransformFeedbackInterleavedComponents
;
2880 GLuint MaxVertexStreams
;
2882 /** GL_EXT_gpu_shader4 */
2883 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2885 /* GL_ARB_robustness */
2886 GLenum ResetStrategy
;
2888 /* GL_ARB_blend_func_extended */
2889 GLuint MaxDualSourceDrawBuffers
;
2892 * Whether the implementation strips out and ignores texture borders.
2894 * Many GPU hardware implementations don't support rendering with texture
2895 * borders and mipmapped textures. (Note: not static border color, but the
2896 * old 1-pixel border around each edge). Implementations then have to do
2897 * slow fallbacks to be correct, or just ignore the border and be fast but
2898 * wrong. Setting the flag strips the border off of TexImage calls,
2899 * providing "fast but wrong" at significantly reduced driver complexity.
2901 * Texture borders are deprecated in GL 3.0.
2903 GLboolean StripTextureBorder
;
2906 * For drivers which can do a better job at eliminating unused varyings
2907 * and uniforms than the GLSL compiler.
2909 * XXX Remove these as soon as a better solution is available.
2911 GLboolean GLSLSkipStrictMaxVaryingLimitCheck
;
2912 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
2915 * Force software support for primitive restart in the VBO module.
2917 GLboolean PrimitiveRestartInSoftware
;
2919 /** GL_ARB_map_buffer_alignment */
2920 GLuint MinMapBufferAlignment
;
2923 * Disable varying packing. This is out of spec, but potentially useful
2924 * for older platforms that supports a limited number of texture
2925 * indirections--on these platforms, unpacking the varyings in the fragment
2926 * shader increases the number of texture indirections by 1, which might
2927 * make some shaders not executable at all.
2929 * Drivers that support transform feedback must set this value to GL_FALSE.
2931 GLboolean DisableVaryingPacking
;
2934 * Maximum value supported for an index in DrawElements and friends.
2936 * This must be at least (1ull<<24)-1. The default value is
2939 * \since ES 3.0 or GL_ARB_ES3_compatibility
2940 * \sa _mesa_init_constants
2942 GLuint64 MaxElementIndex
;
2945 * Disable interpretation of line continuations (lines ending with a
2946 * backslash character ('\') in GLSL source.
2948 GLboolean DisableGLSLLineContinuations
;
2950 /** GL_ARB_texture_multisample */
2951 GLint MaxColorTextureSamples
;
2952 GLint MaxDepthTextureSamples
;
2953 GLint MaxIntegerSamples
;
2958 * Enable flag for each OpenGL extension. Different device drivers will
2959 * enable different extensions at runtime.
2961 struct gl_extensions
2963 GLboolean dummy
; /* don't remove this! */
2964 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2965 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2966 GLboolean ANGLE_texture_compression_dxt
;
2967 GLboolean ARB_ES2_compatibility
;
2968 GLboolean ARB_ES3_compatibility
;
2969 GLboolean ARB_base_instance
;
2970 GLboolean ARB_blend_func_extended
;
2971 GLboolean ARB_color_buffer_float
;
2972 GLboolean ARB_conservative_depth
;
2973 GLboolean ARB_depth_buffer_float
;
2974 GLboolean ARB_depth_clamp
;
2975 GLboolean ARB_depth_texture
;
2976 GLboolean ARB_draw_buffers_blend
;
2977 GLboolean ARB_draw_elements_base_vertex
;
2978 GLboolean ARB_draw_instanced
;
2979 GLboolean ARB_fragment_coord_conventions
;
2980 GLboolean ARB_fragment_program
;
2981 GLboolean ARB_fragment_program_shadow
;
2982 GLboolean ARB_fragment_shader
;
2983 GLboolean ARB_framebuffer_object
;
2984 GLboolean ARB_explicit_attrib_location
;
2985 GLboolean ARB_geometry_shader4
;
2986 GLboolean ARB_gpu_shader5
;
2987 GLboolean ARB_half_float_pixel
;
2988 GLboolean ARB_half_float_vertex
;
2989 GLboolean ARB_instanced_arrays
;
2990 GLboolean ARB_internalformat_query
;
2991 GLboolean ARB_map_buffer_alignment
;
2992 GLboolean ARB_map_buffer_range
;
2993 GLboolean ARB_occlusion_query
;
2994 GLboolean ARB_occlusion_query2
;
2995 GLboolean ARB_point_sprite
;
2996 GLboolean ARB_seamless_cube_map
;
2997 GLboolean ARB_shader_bit_encoding
;
2998 GLboolean ARB_shader_objects
;
2999 GLboolean ARB_shader_stencil_export
;
3000 GLboolean ARB_shader_texture_lod
;
3001 GLboolean ARB_shading_language_100
;
3002 GLboolean ARB_shading_language_packing
;
3003 GLboolean ARB_shadow
;
3005 GLboolean ARB_texture_border_clamp
;
3006 GLboolean ARB_texture_buffer_object
;
3007 GLboolean ARB_texture_buffer_object_rgb32
;
3008 GLboolean ARB_texture_buffer_range
;
3009 GLboolean ARB_texture_compression_rgtc
;
3010 GLboolean ARB_texture_cube_map
;
3011 GLboolean ARB_texture_cube_map_array
;
3012 GLboolean ARB_texture_env_combine
;
3013 GLboolean ARB_texture_env_crossbar
;
3014 GLboolean ARB_texture_env_dot3
;
3015 GLboolean ARB_texture_float
;
3016 GLboolean ARB_texture_multisample
;
3017 GLboolean ARB_texture_non_power_of_two
;
3018 GLboolean ARB_texture_query_lod
;
3019 GLboolean ARB_texture_rg
;
3020 GLboolean ARB_texture_rgb10_a2ui
;
3021 GLboolean ARB_texture_storage
;
3022 GLboolean ARB_texture_storage_multisample
;
3023 GLboolean ARB_timer_query
;
3024 GLboolean ARB_transform_feedback2
;
3025 GLboolean ARB_transform_feedback3
;
3026 GLboolean ARB_transform_feedback_instanced
;
3027 GLboolean ARB_uniform_buffer_object
;
3028 GLboolean ARB_vertex_program
;
3029 GLboolean ARB_vertex_shader
;
3030 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3031 GLboolean EXT_blend_color
;
3032 GLboolean EXT_blend_equation_separate
;
3033 GLboolean EXT_blend_func_separate
;
3034 GLboolean EXT_blend_minmax
;
3035 GLboolean EXT_clip_volume_hint
;
3036 GLboolean EXT_depth_bounds_test
;
3037 GLboolean EXT_draw_buffers2
;
3038 GLboolean EXT_fog_coord
;
3039 GLboolean EXT_framebuffer_blit
;
3040 GLboolean EXT_framebuffer_multisample
;
3041 GLboolean EXT_framebuffer_object
;
3042 GLboolean EXT_framebuffer_sRGB
;
3043 GLboolean EXT_gpu_program_parameters
;
3044 GLboolean EXT_gpu_shader4
;
3045 GLboolean EXT_packed_depth_stencil
;
3046 GLboolean EXT_packed_float
;
3047 GLboolean EXT_pixel_buffer_object
;
3048 GLboolean EXT_point_parameters
;
3049 GLboolean EXT_provoking_vertex
;
3050 GLboolean EXT_shadow_funcs
;
3051 GLboolean EXT_secondary_color
;
3052 GLboolean EXT_separate_shader_objects
;
3053 GLboolean EXT_stencil_two_side
;
3054 GLboolean EXT_texture3D
;
3055 GLboolean EXT_texture_array
;
3056 GLboolean EXT_texture_compression_latc
;
3057 GLboolean EXT_texture_compression_s3tc
;
3058 GLboolean EXT_texture_env_dot3
;
3059 GLboolean EXT_texture_filter_anisotropic
;
3060 GLboolean EXT_texture_integer
;
3061 GLboolean EXT_texture_mirror_clamp
;
3062 GLboolean EXT_texture_shared_exponent
;
3063 GLboolean EXT_texture_snorm
;
3064 GLboolean EXT_texture_sRGB
;
3065 GLboolean EXT_texture_sRGB_decode
;
3066 GLboolean EXT_texture_swizzle
;
3067 GLboolean EXT_transform_feedback
;
3068 GLboolean EXT_timer_query
;
3069 GLboolean EXT_vertex_array_bgra
;
3070 GLboolean OES_standard_derivatives
;
3071 /* vendor extensions */
3072 GLboolean AMD_seamless_cubemap_per_texture
;
3073 GLboolean AMD_vertex_shader_layer
;
3074 GLboolean APPLE_object_purgeable
;
3075 GLboolean ATI_envmap_bumpmap
;
3076 GLboolean ATI_texture_compression_3dc
;
3077 GLboolean ATI_texture_mirror_once
;
3078 GLboolean ATI_texture_env_combine3
;
3079 GLboolean ATI_fragment_shader
;
3080 GLboolean ATI_separate_stencil
;
3081 GLboolean MESA_pack_invert
;
3082 GLboolean MESA_resize_buffers
;
3083 GLboolean MESA_ycbcr_texture
;
3084 GLboolean MESA_texture_array
;
3085 GLboolean NV_blend_square
;
3086 GLboolean NV_conditional_render
;
3087 GLboolean NV_fog_distance
;
3088 GLboolean NV_fragment_program_option
;
3089 GLboolean NV_point_sprite
;
3090 GLboolean NV_primitive_restart
;
3091 GLboolean NV_texture_barrier
;
3092 GLboolean NV_texture_env_combine4
;
3093 GLboolean NV_texture_rectangle
;
3094 GLboolean TDFX_texture_compression_FXT1
;
3095 GLboolean OES_EGL_image
;
3096 GLboolean OES_draw_texture
;
3097 GLboolean OES_depth_texture_cube_map
;
3098 GLboolean OES_EGL_image_external
;
3099 GLboolean OES_compressed_ETC1_RGB8_texture
;
3100 GLboolean extension_sentinel
;
3101 /** The extension string */
3102 const GLubyte
*String
;
3103 /** Number of supported extensions */
3109 * A stack of matrices (projection, modelview, color, texture, etc).
3111 struct gl_matrix_stack
3113 GLmatrix
*Top
; /**< points into Stack */
3114 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3115 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3116 GLuint MaxDepth
; /**< size of Stack[] array */
3117 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3122 * \name Bits for image transfer operations
3123 * \sa __struct gl_contextRec::ImageTransferState.
3126 #define IMAGE_SCALE_BIAS_BIT 0x1
3127 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3128 #define IMAGE_MAP_COLOR_BIT 0x4
3129 #define IMAGE_CLAMP_BIT 0x800
3132 /** Pixel Transfer ops */
3133 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3134 IMAGE_SHIFT_OFFSET_BIT | \
3135 IMAGE_MAP_COLOR_BIT)
3138 * \name Bits to indicate what state has changed.
3141 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3142 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3143 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3144 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3145 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3146 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3147 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3148 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3149 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3150 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3151 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3152 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3153 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3154 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3155 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3156 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3157 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3158 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3159 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3160 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3161 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3162 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3163 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3164 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3165 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3166 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3167 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3168 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3169 #define _NEW_BUFFER_OBJECT (1 << 28)
3170 #define _NEW_FRAG_CLAMP (1 << 29)
3171 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3172 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3178 * Composite state flags
3181 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3187 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3197 /* This has to be included here. */
3202 * Display list flags.
3203 * Strictly this is a tnl-private concept, but it doesn't seem
3204 * worthwhile adding a tnl private structure just to hold this one bit
3207 #define DLIST_DANGLING_REFS 0x1
3210 /** Opaque declaration of display list payload data type */
3211 union gl_dlist_node
;
3215 * Provide a location where information about a display list can be
3216 * collected. Could be extended with driverPrivate structures,
3217 * etc. in the future.
3219 struct gl_display_list
3222 GLbitfield Flags
; /**< DLIST_x flags */
3223 /** The dlist commands are in a linked list of nodes */
3224 union gl_dlist_node
*Head
;
3229 * State used during display list compilation and execution.
3231 struct gl_dlist_state
3233 GLuint CallDepth
; /**< Current recursion calling depth */
3235 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3236 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3237 GLuint CurrentPos
; /**< Index into current block of nodes */
3239 GLvertexformat ListVtxfmt
;
3241 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3242 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3244 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3245 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3248 /* State known to have been set by the currently-compiling display
3249 * list. Used to eliminate some redundant state changes.
3257 * These are a mapping of the GL_ARB_debug_output enums to small enums
3258 * suitable for use as an array index.
3261 enum mesa_debug_source
{
3262 MESA_DEBUG_SOURCE_API
,
3263 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3264 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3265 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3266 MESA_DEBUG_SOURCE_APPLICATION
,
3267 MESA_DEBUG_SOURCE_OTHER
,
3268 MESA_DEBUG_SOURCE_COUNT
,
3271 enum mesa_debug_type
{
3272 MESA_DEBUG_TYPE_ERROR
,
3273 MESA_DEBUG_TYPE_DEPRECATED
,
3274 MESA_DEBUG_TYPE_UNDEFINED
,
3275 MESA_DEBUG_TYPE_PORTABILITY
,
3276 MESA_DEBUG_TYPE_PERFORMANCE
,
3277 MESA_DEBUG_TYPE_OTHER
,
3278 MESA_DEBUG_TYPE_COUNT
,
3281 enum mesa_debug_severity
{
3282 MESA_DEBUG_SEVERITY_LOW
,
3283 MESA_DEBUG_SEVERITY_MEDIUM
,
3284 MESA_DEBUG_SEVERITY_HIGH
,
3285 MESA_DEBUG_SEVERITY_COUNT
,
3291 * An error, warning, or other piece of debug information for an application
3292 * to consume via GL_ARB_debug_output.
3296 enum mesa_debug_source source
;
3297 enum mesa_debug_type type
;
3299 enum mesa_debug_severity severity
;
3304 struct gl_debug_namespace
3306 struct _mesa_HashTable
*IDs
;
3307 unsigned ZeroID
; /* a HashTable won't take zero, so store its state here */
3308 /** lists of IDs in the hash table at each severity */
3309 struct simple_node Severity
[MESA_DEBUG_SEVERITY_COUNT
];
3312 struct gl_debug_state
3314 GLDEBUGPROCARB Callback
;
3315 GLvoid
*CallbackData
;
3316 GLboolean SyncOutput
;
3317 GLboolean Defaults
[MESA_DEBUG_SEVERITY_COUNT
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3318 struct gl_debug_namespace Namespaces
[MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3319 struct gl_debug_msg Log
[MAX_DEBUG_LOGGED_MESSAGES
];
3322 GLint NextMsgLength
; /* redundant, but copied here from Log[NextMsg].length
3323 for the sake of the offsetof() code in get.c */
3327 * Enum for the OpenGL APIs we know about and may support.
3329 * NOTE: This must match the api_enum table in
3330 * src/mesa/main/get_hash_generator.py
3334 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
3338 API_OPENGL_LAST
= API_OPENGL_CORE
,
3342 * Driver-specific state flags.
3344 * These are or'd with gl_context::NewDriverState to notify a driver about
3345 * a state change. The driver sets the flags at context creation and
3346 * the meaning of the bits set is opaque to core Mesa.
3348 struct gl_driver_flags
3350 /** gl_context::Array::_DrawArrays (vertex array state) */
3351 GLbitfield NewArray
;
3353 /** gl_context::TransformFeedback::CurrentObject */
3354 GLbitfield NewTransformFeedback
;
3356 /** gl_context::RasterDiscard */
3357 GLbitfield NewRasterizerDiscard
;
3360 * gl_context::UniformBufferBindings
3361 * gl_shader_program::UniformBlocks
3363 GLbitfield NewUniformBuffer
;
3366 struct gl_uniform_buffer_binding
3368 struct gl_buffer_object
*BufferObject
;
3369 /** Start of uniform block data in the buffer */
3371 /** Size of data allowed to be referenced from the buffer (in bytes) */
3374 * glBindBufferBase() indicates that the Size should be ignored and only
3375 * limited by the current size of the BufferObject.
3377 GLboolean AutomaticSize
;
3381 * Mesa rendering context.
3383 * This is the central context data structure for Mesa. Almost all
3384 * OpenGL state is contained in this structure.
3385 * Think of this as a base class from which device drivers will derive
3388 * The struct gl_context typedef names this structure.
3392 /** State possibly shared with other contexts in the address space */
3393 struct gl_shared_state
*Shared
;
3395 /** \name API function pointer tables */
3399 * The current dispatch table for non-displaylist-saving execution, either
3400 * BeginEnd or OutsideBeginEnd
3402 struct _glapi_table
*Exec
;
3404 * The normal dispatch table for non-displaylist-saving, non-begin/end
3406 struct _glapi_table
*OutsideBeginEnd
;
3407 /** The dispatch table used between glNewList() and glEndList() */
3408 struct _glapi_table
*Save
;
3410 * The dispatch table used between glBegin() and glEnd() (outside of a
3411 * display list). Only valid functions between those two are set, which is
3412 * mostly just the set in a GLvertexformat struct.
3414 struct _glapi_table
*BeginEnd
;
3416 * Tracks the current dispatch table out of the 3 above, so that it can be
3417 * re-set on glXMakeCurrent().
3419 struct _glapi_table
*CurrentDispatch
;
3422 struct gl_config Visual
;
3423 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3424 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3425 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3426 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3429 * Device driver function pointer table
3431 struct dd_function_table Driver
;
3433 /** Core/Driver constants */
3434 struct gl_constants Const
;
3436 /** \name The various 4x4 matrix stacks */
3438 struct gl_matrix_stack ModelviewMatrixStack
;
3439 struct gl_matrix_stack ProjectionMatrixStack
;
3440 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3441 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3442 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3445 /** Combined modelview and projection matrix */
3446 GLmatrix _ModelProjectMatrix
;
3448 /** \name Display lists */
3449 struct gl_dlist_state ListState
;
3451 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3452 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3454 /** Extension information */
3455 struct gl_extensions Extensions
;
3457 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3459 char *VersionString
;
3461 /** \name State attribute stack (for glPush/PopAttrib) */
3463 GLuint AttribStackDepth
;
3464 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3467 /** \name Renderer attribute groups
3469 * We define a struct for each attribute group to make pushing and popping
3470 * attributes easy. Also it's a good organization.
3473 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3474 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3475 struct gl_current_attrib Current
; /**< Current attributes */
3476 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3477 struct gl_eval_attrib Eval
; /**< Eval attributes */
3478 struct gl_fog_attrib Fog
; /**< Fog attributes */
3479 struct gl_hint_attrib Hint
; /**< Hint attributes */
3480 struct gl_light_attrib Light
; /**< Light attributes */
3481 struct gl_line_attrib Line
; /**< Line attributes */
3482 struct gl_list_attrib List
; /**< List attributes */
3483 struct gl_multisample_attrib Multisample
;
3484 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3485 struct gl_point_attrib Point
; /**< Point attributes */
3486 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3487 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3488 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3489 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3490 struct gl_texture_attrib Texture
; /**< Texture attributes */
3491 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3492 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3495 /** \name Client attribute stack */
3497 GLuint ClientAttribStackDepth
;
3498 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3501 /** \name Client attribute groups */
3503 struct gl_array_attrib Array
; /**< Vertex arrays */
3504 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3505 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3506 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3509 /** \name Other assorted state (not pushed/popped on attribute stack) */
3511 struct gl_pixelmaps PixelMaps
;
3513 struct gl_evaluators EvalMap
; /**< All evaluators */
3514 struct gl_feedback Feedback
; /**< Feedback */
3515 struct gl_selection Select
; /**< Selection */
3517 struct gl_program_state Program
; /**< general program state */
3518 struct gl_vertex_program_state VertexProgram
;
3519 struct gl_fragment_program_state FragmentProgram
;
3520 struct gl_geometry_program_state GeometryProgram
;
3521 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3523 struct gl_shader_state Shader
; /**< GLSL shader object state */
3524 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3526 struct gl_query_state Query
; /**< occlusion, timer queries */
3528 struct gl_transform_feedback_state TransformFeedback
;
3530 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3531 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3534 * Current GL_ARB_uniform_buffer_object binding referenced by
3535 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
3537 struct gl_buffer_object
*UniformBuffer
;
3540 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
3541 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
3542 * associated with uniform blocks by glUniformBlockBinding()'s state in the
3545 struct gl_uniform_buffer_binding
3546 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
3550 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3552 /* GL_EXT_framebuffer_object */
3553 struct gl_renderbuffer
*CurrentRenderbuffer
;
3555 GLenum ErrorValue
; /**< Last error code */
3557 /* GL_ARB_robustness */
3561 * Recognize and silence repeated error debug messages in buggy apps.
3563 const char *ErrorDebugFmtString
;
3564 GLuint ErrorDebugCount
;
3566 /* GL_ARB_debug_output */
3567 struct gl_debug_state Debug
;
3569 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3570 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3571 GLbitfield NewDriverState
;/**< bitwise-or of flags from DriverFlags */
3573 struct gl_driver_flags DriverFlags
;
3575 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3577 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3579 /** \name Derived state */
3580 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3581 GLfloat _EyeZDir
[3];
3582 GLfloat _ModelViewInvScale
;
3583 GLboolean _NeedEyeCoords
;
3584 GLboolean _ForceEyeCoords
;
3586 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3588 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3590 /** \name For debugging/development only */
3592 GLboolean FirstTimeCurrent
;
3595 /** software compression/decompression supported or not */
3596 GLboolean Mesa_DXTn
;
3598 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3600 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
3603 * \name Hooks for module contexts.
3605 * These will eventually live in the driver or elsewhere.
3608 void *swrast_context
;
3609 void *swsetup_context
;
3610 void *swtnl_context
;
3612 struct st_context
*st
;
3619 extern int MESA_VERBOSE
;
3620 extern int MESA_DEBUG_FLAGS
;
3621 # define MESA_FUNCTION __FUNCTION__
3623 # define MESA_VERBOSE 0
3624 # define MESA_DEBUG_FLAGS 0
3625 # define MESA_FUNCTION "a function"
3632 /** The MESA_VERBOSE var is a bitmask of these flags */
3635 VERBOSE_VARRAY
= 0x0001,
3636 VERBOSE_TEXTURE
= 0x0002,
3637 VERBOSE_MATERIAL
= 0x0004,
3638 VERBOSE_PIPELINE
= 0x0008,
3639 VERBOSE_DRIVER
= 0x0010,
3640 VERBOSE_STATE
= 0x0020,
3641 VERBOSE_API
= 0x0040,
3642 VERBOSE_DISPLAY_LIST
= 0x0100,
3643 VERBOSE_LIGHTING
= 0x0200,
3644 VERBOSE_PRIMS
= 0x0400,
3645 VERBOSE_VERTS
= 0x0800,
3646 VERBOSE_DISASSEM
= 0x1000,
3647 VERBOSE_DRAW
= 0x2000,
3648 VERBOSE_SWAPBUFFERS
= 0x4000
3652 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3655 DEBUG_SILENT
= (1 << 0),
3656 DEBUG_ALWAYS_FLUSH
= (1 << 1),
3657 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
3658 DEBUG_INCOMPLETE_FBO
= (1 << 3)
3667 #endif /* MTYPES_H */