2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include "main/glheader.h"
38 #include "main/config.h"
39 #include "glapi/glapi.h"
40 #include "math/m_matrix.h" /* GLmatrix */
41 #include "main/simple_list.h" /* struct simple_node */
42 #include "main/formats.h" /* MESA_FORMAT_COUNT */
51 * \name 64-bit extension of GLbitfield.
54 typedef GLuint64 GLbitfield64
;
56 /** Set a single bit */
57 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
58 /** Set all bits up to excluding bit b */
59 #define BITFIELD64_MASK(b) \
60 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
61 /** Set count bits starting from bit b */
62 #define BITFIELD64_RANGE(b, count) \
63 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
67 * \name Some forward type declarations
70 struct _mesa_HashTable
;
71 struct gl_attrib_node
;
72 struct gl_list_extensions
;
74 struct gl_program_cache
;
75 struct gl_texture_object
;
78 struct gl_uniform_storage
;
79 struct prog_instruction
;
80 struct gl_program_parameter_list
;
86 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
87 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
88 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
89 #define PRIM_UNKNOWN (PRIM_MAX + 2)
94 * Indexes for vertex program attributes.
95 * GL_NV_vertex_program aliases generic attributes over the conventional
96 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
97 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
98 * generic attributes are distinct/separate).
103 VERT_ATTRIB_WEIGHT
= 1,
104 VERT_ATTRIB_NORMAL
= 2,
105 VERT_ATTRIB_COLOR0
= 3,
106 VERT_ATTRIB_COLOR1
= 4,
108 VERT_ATTRIB_COLOR_INDEX
= 6,
109 VERT_ATTRIB_EDGEFLAG
= 7,
110 VERT_ATTRIB_TEX0
= 8,
111 VERT_ATTRIB_TEX1
= 9,
112 VERT_ATTRIB_TEX2
= 10,
113 VERT_ATTRIB_TEX3
= 11,
114 VERT_ATTRIB_TEX4
= 12,
115 VERT_ATTRIB_TEX5
= 13,
116 VERT_ATTRIB_TEX6
= 14,
117 VERT_ATTRIB_TEX7
= 15,
118 VERT_ATTRIB_POINT_SIZE
= 16,
119 VERT_ATTRIB_GENERIC0
= 17,
120 VERT_ATTRIB_GENERIC1
= 18,
121 VERT_ATTRIB_GENERIC2
= 19,
122 VERT_ATTRIB_GENERIC3
= 20,
123 VERT_ATTRIB_GENERIC4
= 21,
124 VERT_ATTRIB_GENERIC5
= 22,
125 VERT_ATTRIB_GENERIC6
= 23,
126 VERT_ATTRIB_GENERIC7
= 24,
127 VERT_ATTRIB_GENERIC8
= 25,
128 VERT_ATTRIB_GENERIC9
= 26,
129 VERT_ATTRIB_GENERIC10
= 27,
130 VERT_ATTRIB_GENERIC11
= 28,
131 VERT_ATTRIB_GENERIC12
= 29,
132 VERT_ATTRIB_GENERIC13
= 30,
133 VERT_ATTRIB_GENERIC14
= 31,
134 VERT_ATTRIB_GENERIC15
= 32,
139 * Symbolic constats to help iterating over
140 * specific blocks of vertex attributes.
143 * includes all fixed function attributes as well as
144 * the aliased GL_NV_vertex_program shader attributes.
146 * include the classic texture coordinate attributes.
147 * Is a subset of VERT_ATTRIB_FF.
148 * VERT_ATTRIB_GENERIC
149 * include the OpenGL 2.0+ GLSL generic shader attributes.
150 * These alias the generic GL_ARB_vertex_shader attributes.
152 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
153 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
155 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
156 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
158 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
159 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
162 * Bitflags for vertex attributes.
163 * These are used in bitfields in many places.
166 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
167 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
168 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
169 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
170 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
171 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
172 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
173 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
174 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
175 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
176 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
177 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
178 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
179 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
180 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
181 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
182 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
183 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
185 #define VERT_BIT(i) BITFIELD64_BIT(i)
186 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
188 #define VERT_BIT_FF(i) VERT_BIT(i)
189 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
190 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
191 #define VERT_BIT_TEX_ALL \
192 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
194 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
195 #define VERT_BIT_GENERIC_ALL \
196 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
201 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
202 * fragment shader inputs.
204 * Note that some of these values are not available to all pipeline stages.
206 * When this enum is updated, the following code must be updated too:
207 * - vertResults (in prog_print.c's arb_output_attrib_string())
208 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
209 * - _mesa_varying_slot_in_fs()
214 VARYING_SLOT_COL0
, /* COL0 and COL1 must be contiguous */
217 VARYING_SLOT_TEX0
, /* TEX0-TEX7 must be contiguous */
225 VARYING_SLOT_PSIZ
, /* Does not appear in FS */
226 VARYING_SLOT_BFC0
, /* Does not appear in FS */
227 VARYING_SLOT_BFC1
, /* Does not appear in FS */
228 VARYING_SLOT_EDGE
, /* Does not appear in FS */
229 VARYING_SLOT_CLIP_VERTEX
, /* Does not appear in FS */
230 VARYING_SLOT_CLIP_DIST0
,
231 VARYING_SLOT_CLIP_DIST1
,
232 VARYING_SLOT_PRIMITIVE_ID
, /* Does not appear in VS */
233 VARYING_SLOT_LAYER
, /* Appears as VS or GS output */
234 VARYING_SLOT_FACE
, /* FS only */
235 VARYING_SLOT_PNTC
, /* FS only */
236 VARYING_SLOT_VAR0
, /* First generic varying slot */
237 VARYING_SLOT_MAX
= VARYING_SLOT_VAR0
+ MAX_VARYING
242 * Bitflags for varying slots.
245 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
246 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
247 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
248 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
249 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
250 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
251 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
252 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
253 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
254 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
255 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
256 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
257 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
258 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
259 MAX_TEXTURE_COORD_UNITS)
260 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
261 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
262 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
263 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
264 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
265 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
266 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
267 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
268 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
269 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
270 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
271 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
275 /*********************************************/
278 * Determine if the given gl_varying_slot appears in the fragment shader.
280 static inline GLboolean
281 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
284 case VARYING_SLOT_PSIZ
:
285 case VARYING_SLOT_BFC0
:
286 case VARYING_SLOT_BFC1
:
287 case VARYING_SLOT_EDGE
:
288 case VARYING_SLOT_CLIP_VERTEX
:
289 case VARYING_SLOT_LAYER
:
298 * Fragment program results
302 FRAG_RESULT_DEPTH
= 0,
303 FRAG_RESULT_STENCIL
= 1,
304 /* If a single color should be written to all render targets, this
305 * register is written. No FRAG_RESULT_DATAn will be written.
307 FRAG_RESULT_COLOR
= 2,
309 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
310 * or ARB_fragment_program fragment.color[n]) color results. If
311 * any are written, FRAG_RESULT_COLOR will not be written.
313 FRAG_RESULT_DATA0
= 3,
314 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
319 * Indexes for all renderbuffers
323 /* the four standard color buffers */
331 /* optional aux buffer */
333 /* generic renderbuffers */
346 * Bit flags for all renderbuffers
348 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
349 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
350 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
351 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
352 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
353 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
354 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
355 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
356 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
357 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
358 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
359 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
360 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
361 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
362 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
363 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
364 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
365 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
366 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
369 * Mask of all the color buffer bits (but not accum).
371 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
372 BUFFER_BIT_BACK_LEFT | \
373 BUFFER_BIT_FRONT_RIGHT | \
374 BUFFER_BIT_BACK_RIGHT | \
376 BUFFER_BIT_COLOR0 | \
377 BUFFER_BIT_COLOR1 | \
378 BUFFER_BIT_COLOR2 | \
379 BUFFER_BIT_COLOR3 | \
380 BUFFER_BIT_COLOR4 | \
381 BUFFER_BIT_COLOR5 | \
382 BUFFER_BIT_COLOR6 | \
387 * Framebuffer configuration (aka visual / pixelformat)
388 * Note: some of these fields should be boolean, but it appears that
389 * code in drivers/dri/common/util.c requires int-sized fields.
395 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
396 GLuint doubleBufferMode
;
399 GLboolean haveAccumBuffer
;
400 GLboolean haveDepthBuffer
;
401 GLboolean haveStencilBuffer
;
403 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
404 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
405 GLint rgbBits
; /* total bits for rgb */
406 GLint indexBits
; /* total bits for colorindex */
408 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
416 /* EXT_visual_rating / GLX 1.2 */
419 /* EXT_visual_info / GLX 1.2 */
420 GLint transparentPixel
;
421 /* colors are floats scaled to ints */
422 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
423 GLint transparentIndex
;
425 /* ARB_multisample / SGIS_multisample */
429 /* SGIX_pbuffer / GLX 1.3 */
430 GLint maxPbufferWidth
;
431 GLint maxPbufferHeight
;
432 GLint maxPbufferPixels
;
433 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
434 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
436 /* OML_swap_method */
439 /* EXT_texture_from_pixmap */
440 GLint bindToTextureRgb
;
441 GLint bindToTextureRgba
;
442 GLint bindToMipmapTexture
;
443 GLint bindToTextureTargets
;
446 /* EXT_framebuffer_sRGB */
452 * \name Bit flags used for updating material values.
455 #define MAT_ATTRIB_FRONT_AMBIENT 0
456 #define MAT_ATTRIB_BACK_AMBIENT 1
457 #define MAT_ATTRIB_FRONT_DIFFUSE 2
458 #define MAT_ATTRIB_BACK_DIFFUSE 3
459 #define MAT_ATTRIB_FRONT_SPECULAR 4
460 #define MAT_ATTRIB_BACK_SPECULAR 5
461 #define MAT_ATTRIB_FRONT_EMISSION 6
462 #define MAT_ATTRIB_BACK_EMISSION 7
463 #define MAT_ATTRIB_FRONT_SHININESS 8
464 #define MAT_ATTRIB_BACK_SHININESS 9
465 #define MAT_ATTRIB_FRONT_INDEXES 10
466 #define MAT_ATTRIB_BACK_INDEXES 11
467 #define MAT_ATTRIB_MAX 12
469 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
470 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
471 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
472 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
473 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
474 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
476 #define MAT_INDEX_AMBIENT 0
477 #define MAT_INDEX_DIFFUSE 1
478 #define MAT_INDEX_SPECULAR 2
480 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
481 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
482 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
483 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
484 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
485 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
486 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
487 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
488 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
489 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
490 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
491 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
494 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
495 MAT_BIT_FRONT_AMBIENT | \
496 MAT_BIT_FRONT_DIFFUSE | \
497 MAT_BIT_FRONT_SPECULAR | \
498 MAT_BIT_FRONT_SHININESS | \
499 MAT_BIT_FRONT_INDEXES)
501 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
502 MAT_BIT_BACK_AMBIENT | \
503 MAT_BIT_BACK_DIFFUSE | \
504 MAT_BIT_BACK_SPECULAR | \
505 MAT_BIT_BACK_SHININESS | \
506 MAT_BIT_BACK_INDEXES)
508 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
517 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
525 #define LIGHT_SPOT 0x1
526 #define LIGHT_LOCAL_VIEWER 0x2
527 #define LIGHT_POSITIONAL 0x4
528 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
533 * Light source state.
537 struct gl_light
*next
; /**< double linked list with sentinel */
538 struct gl_light
*prev
;
540 GLfloat Ambient
[4]; /**< ambient color */
541 GLfloat Diffuse
[4]; /**< diffuse color */
542 GLfloat Specular
[4]; /**< specular color */
543 GLfloat EyePosition
[4]; /**< position in eye coordinates */
544 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
545 GLfloat SpotExponent
;
546 GLfloat SpotCutoff
; /**< in degrees */
547 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
548 GLfloat ConstantAttenuation
;
549 GLfloat LinearAttenuation
;
550 GLfloat QuadraticAttenuation
;
551 GLboolean Enabled
; /**< On/off flag */
554 * \name Derived fields
557 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
559 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
560 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
561 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
562 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
563 GLfloat _VP_inf_spot_attenuation
;
565 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
566 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
567 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
577 GLfloat Ambient
[4]; /**< ambient color */
578 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
579 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
580 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
581 * or GL_SEPARATE_SPECULAR_COLOR */
586 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
588 struct gl_accum_attrib
590 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
595 * Used for storing clear color, texture border color, etc.
596 * The float values are typically unclamped.
607 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
609 struct gl_colorbuffer_attrib
611 GLuint ClearIndex
; /**< Index for glClear */
612 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
613 GLuint IndexMask
; /**< Color index write mask */
614 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
616 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
619 * \name alpha testing
622 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
623 GLenum AlphaFunc
; /**< Alpha test function */
624 GLfloat AlphaRefUnclamped
;
625 GLclampf AlphaRef
; /**< Alpha reference value */
632 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
634 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
635 * control, only on the fixed-pointness of the render target.
636 * The query does however depend on fragment color clamping.
638 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
639 GLfloat BlendColor
[4]; /**< Blending color */
643 GLenum SrcRGB
; /**< RGB blend source term */
644 GLenum DstRGB
; /**< RGB blend dest term */
645 GLenum SrcA
; /**< Alpha blend source term */
646 GLenum DstA
; /**< Alpha blend dest term */
647 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
648 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
650 * Set if any blend factor uses SRC1. Computed at the time blend factors
653 GLboolean _UsesDualSrc
;
654 } Blend
[MAX_DRAW_BUFFERS
];
655 /** Are the blend func terms currently different for each buffer/target? */
656 GLboolean _BlendFuncPerBuffer
;
657 /** Are the blend equations currently different for each buffer/target? */
658 GLboolean _BlendEquationPerBuffer
;
665 GLenum LogicOp
; /**< Logic operator */
666 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
667 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
670 GLboolean DitherFlag
; /**< Dither enable flag */
672 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
673 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
674 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
676 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
681 * Current attribute group (GL_CURRENT_BIT).
683 struct gl_current_attrib
686 * \name Current vertex attributes.
687 * \note Values are valid only after FLUSH_VERTICES has been called.
688 * \note Index and Edgeflag current values are stored as floats in the
689 * SIX and SEVEN attribute slots.
691 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
694 * \name Current raster position attributes (always valid).
695 * \note This set of attributes is very similar to the SWvertex struct.
698 GLfloat RasterPos
[4];
699 GLfloat RasterDistance
;
700 GLfloat RasterColor
[4];
701 GLfloat RasterSecondaryColor
[4];
702 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
703 GLboolean RasterPosValid
;
709 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
711 struct gl_depthbuffer_attrib
713 GLenum Func
; /**< Function for depth buffer compare */
714 GLclampd Clear
; /**< Value to clear depth buffer to */
715 GLboolean Test
; /**< Depth buffering enabled flag */
716 GLboolean Mask
; /**< Depth buffer writable? */
717 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
718 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
723 * Evaluator attribute group (GL_EVAL_BIT).
725 struct gl_eval_attrib
731 GLboolean Map1Color4
;
733 GLboolean Map1Normal
;
734 GLboolean Map1TextureCoord1
;
735 GLboolean Map1TextureCoord2
;
736 GLboolean Map1TextureCoord3
;
737 GLboolean Map1TextureCoord4
;
738 GLboolean Map1Vertex3
;
739 GLboolean Map1Vertex4
;
740 GLboolean Map2Color4
;
742 GLboolean Map2Normal
;
743 GLboolean Map2TextureCoord1
;
744 GLboolean Map2TextureCoord2
;
745 GLboolean Map2TextureCoord3
;
746 GLboolean Map2TextureCoord4
;
747 GLboolean Map2Vertex3
;
748 GLboolean Map2Vertex4
;
749 GLboolean AutoNormal
;
753 * \name Map Grid endpoints and divisions and calculated du values
757 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
758 GLint MapGrid2un
, MapGrid2vn
;
759 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
760 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
766 * Fog attribute group (GL_FOG_BIT).
770 GLboolean Enabled
; /**< Fog enabled flag */
771 GLfloat ColorUnclamped
[4]; /**< Fog color */
772 GLfloat Color
[4]; /**< Fog color */
773 GLfloat Density
; /**< Density >= 0.0 */
774 GLfloat Start
; /**< Start distance in eye coords */
775 GLfloat End
; /**< End distance in eye coords */
776 GLfloat Index
; /**< Fog index */
777 GLenum Mode
; /**< Fog mode */
778 GLboolean ColorSumEnabled
;
779 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
780 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
781 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
786 * Hint attribute group (GL_HINT_BIT).
788 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
790 struct gl_hint_attrib
792 GLenum PerspectiveCorrection
;
795 GLenum PolygonSmooth
;
797 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
798 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
799 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
800 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
805 * Lighting attribute group (GL_LIGHT_BIT).
807 struct gl_light_attrib
809 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
810 struct gl_lightmodel Model
; /**< Lighting model */
813 * Front and back material values.
814 * Note: must call FLUSH_VERTICES() before using.
816 struct gl_material Material
;
818 GLboolean Enabled
; /**< Lighting enabled flag */
819 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
820 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
821 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
822 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
823 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
824 GLboolean ColorMaterialEnabled
;
825 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
826 GLboolean _ClampVertexColor
;
828 struct gl_light EnabledList
; /**< List sentinel */
831 * Derived state for optimizations:
834 GLboolean _NeedEyeCoords
;
835 GLboolean _NeedVertices
; /**< Use fast shader? */
836 GLfloat _BaseColor
[2][3];
842 * Line attribute group (GL_LINE_BIT).
844 struct gl_line_attrib
846 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
847 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
848 GLushort StipplePattern
; /**< Stipple pattern */
849 GLint StippleFactor
; /**< Stipple repeat factor */
850 GLfloat Width
; /**< Line width */
855 * Display list attribute group (GL_LIST_BIT).
857 struct gl_list_attrib
864 * Multisample attribute group (GL_MULTISAMPLE_BIT).
866 struct gl_multisample_attrib
869 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
870 GLboolean SampleAlphaToCoverage
;
871 GLboolean SampleAlphaToOne
;
872 GLboolean SampleCoverage
;
873 GLfloat SampleCoverageValue
;
874 GLboolean SampleCoverageInvert
;
876 /* ARB_texture_multisample / GL3.2 additions */
877 GLboolean SampleMask
;
878 GLbitfield SampleMaskValue
; /* GL spec defines this as an array but >32x MSAA is
885 * A pixelmap (see glPixelMap)
890 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
895 * Collection of all pixelmaps
899 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
900 struct gl_pixelmap GtoG
;
901 struct gl_pixelmap BtoB
;
902 struct gl_pixelmap AtoA
;
903 struct gl_pixelmap ItoR
;
904 struct gl_pixelmap ItoG
;
905 struct gl_pixelmap ItoB
;
906 struct gl_pixelmap ItoA
;
907 struct gl_pixelmap ItoI
;
908 struct gl_pixelmap StoS
;
913 * Pixel attribute group (GL_PIXEL_MODE_BIT).
915 struct gl_pixel_attrib
917 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
919 /*--- Begin Pixel Transfer State ---*/
920 /* Fields are in the order in which they're applied... */
922 /** Scale & Bias (index shift, offset) */
924 GLfloat RedBias
, RedScale
;
925 GLfloat GreenBias
, GreenScale
;
926 GLfloat BlueBias
, BlueScale
;
927 GLfloat AlphaBias
, AlphaScale
;
928 GLfloat DepthBias
, DepthScale
;
929 GLint IndexShift
, IndexOffset
;
933 /* Note: actual pixel maps are not part of this attrib group */
934 GLboolean MapColorFlag
;
935 GLboolean MapStencilFlag
;
937 /*--- End Pixel Transfer State ---*/
940 GLfloat ZoomX
, ZoomY
;
945 * Point attribute group (GL_POINT_BIT).
947 struct gl_point_attrib
949 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
950 GLfloat Size
; /**< User-specified point size */
951 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
952 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
953 GLfloat Threshold
; /**< GL_EXT_point_parameters */
954 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
955 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
956 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
957 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
958 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
963 * Polygon attribute group (GL_POLYGON_BIT).
965 struct gl_polygon_attrib
967 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
968 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
969 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
970 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
971 GLboolean CullFlag
; /**< Culling on/off flag */
972 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
973 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
974 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
975 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
976 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
977 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
978 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
979 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
984 * Scissor attributes (GL_SCISSOR_BIT).
986 struct gl_scissor_attrib
988 GLboolean Enabled
; /**< Scissor test enabled? */
989 GLint X
, Y
; /**< Lower left corner of box */
990 GLsizei Width
, Height
; /**< Size of box */
995 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
997 * Three sets of stencil data are tracked so that OpenGL 2.0,
998 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
999 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1000 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1001 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1002 * GL_EXT_stencil_two_side GL_BACK state.
1004 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1005 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1007 * The derived value \c _TestTwoSide is set when the front-face and back-face
1008 * stencil state are different.
1010 struct gl_stencil_attrib
1012 GLboolean Enabled
; /**< Enabled flag */
1013 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1014 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1015 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1016 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1017 GLboolean _TestTwoSide
;
1018 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1019 GLenum Function
[3]; /**< Stencil function */
1020 GLenum FailFunc
[3]; /**< Fail function */
1021 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1022 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1023 GLint Ref
[3]; /**< Reference value */
1024 GLuint ValueMask
[3]; /**< Value mask */
1025 GLuint WriteMask
[3]; /**< Write mask */
1026 GLuint Clear
; /**< Clear value */
1031 * An index for each type of texture object. These correspond to the GL
1032 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1033 * Note: the order is from highest priority to lowest priority.
1037 TEXTURE_2D_MULTISAMPLE_INDEX
,
1038 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1039 TEXTURE_CUBE_ARRAY_INDEX
,
1040 TEXTURE_BUFFER_INDEX
,
1041 TEXTURE_2D_ARRAY_INDEX
,
1042 TEXTURE_1D_ARRAY_INDEX
,
1043 TEXTURE_EXTERNAL_INDEX
,
1054 * Bit flags for each type of texture object
1055 * Used for Texture.Unit[]._ReallyEnabled flags.
1058 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1059 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1060 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1061 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1062 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1063 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1064 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1065 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1066 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1067 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1068 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1069 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1074 * Texture image state. Drivers will typically create a subclass of this
1075 * with extra fields for memory buffers, etc.
1077 struct gl_texture_image
1079 GLint InternalFormat
; /**< Internal format as given by the user */
1080 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1081 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1082 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1083 * GL_DEPTH_STENCIL_EXT only. Used for
1084 * choosing TexEnv arithmetic.
1086 gl_format TexFormat
; /**< The actual texture memory format */
1088 GLuint Border
; /**< 0 or 1 */
1089 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1090 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1091 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1092 GLuint Width2
; /**< = Width - 2*Border */
1093 GLuint Height2
; /**< = Height - 2*Border */
1094 GLuint Depth2
; /**< = Depth - 2*Border */
1095 GLuint WidthLog2
; /**< = log2(Width2) */
1096 GLuint HeightLog2
; /**< = log2(Height2) */
1097 GLuint DepthLog2
; /**< = log2(Depth2) */
1098 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1099 levels, computed from the dimensions */
1101 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1102 GLuint Level
; /**< Which mipmap level am I? */
1103 /** Cube map face: index into gl_texture_object::Image[] array */
1106 /** GL_ARB_texture_multisample */
1107 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1108 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1113 * Indexes for cube map faces.
1128 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1129 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1131 struct gl_sampler_object
1136 GLenum WrapS
; /**< S-axis texture image wrap mode */
1137 GLenum WrapT
; /**< T-axis texture image wrap mode */
1138 GLenum WrapR
; /**< R-axis texture image wrap mode */
1139 GLenum MinFilter
; /**< minification filter */
1140 GLenum MagFilter
; /**< magnification filter */
1141 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1142 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1143 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1144 GLfloat LodBias
; /**< OpenGL 1.4 */
1145 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1146 GLenum CompareMode
; /**< GL_ARB_shadow */
1147 GLenum CompareFunc
; /**< GL_ARB_shadow */
1148 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1149 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1154 * Texture object state. Contains the array of mipmap images, border color,
1155 * wrap modes, filter modes, and shadow/texcompare state.
1157 struct gl_texture_object
1159 _glthread_Mutex Mutex
; /**< for thread safety */
1160 GLint RefCount
; /**< reference count */
1161 GLuint Name
; /**< the user-visible texture object ID */
1162 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1164 struct gl_sampler_object Sampler
;
1166 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1168 GLfloat Priority
; /**< in [0,1] */
1169 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1170 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1171 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1172 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1173 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1174 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1175 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1176 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1177 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1178 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1179 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1180 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1181 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1182 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1183 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1185 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1186 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1188 /** GL_ARB_texture_buffer_object */
1189 struct gl_buffer_object
*BufferObject
;
1190 GLenum BufferObjectFormat
;
1191 /** Equivalent Mesa format for BufferObjectFormat. */
1192 gl_format _BufferObjectFormat
;
1193 /** GL_ARB_texture_buffer_range */
1194 GLintptr BufferOffset
;
1195 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1197 /** GL_OES_EGL_image_external */
1198 GLint RequiredTextureImageUnits
;
1202 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1203 #define MAX_COMBINER_TERMS 4
1207 * Texture combine environment state.
1209 struct gl_tex_env_combine_state
1211 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1212 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1213 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1214 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1215 GLenum SourceA
[MAX_COMBINER_TERMS
];
1216 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1217 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1218 GLenum OperandA
[MAX_COMBINER_TERMS
];
1219 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1220 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1221 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1222 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1227 * TexGenEnabled flags.
1234 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1239 * Bit flag versions of the corresponding GL_ constants.
1242 #define TEXGEN_SPHERE_MAP 0x1
1243 #define TEXGEN_OBJ_LINEAR 0x2
1244 #define TEXGEN_EYE_LINEAR 0x4
1245 #define TEXGEN_REFLECTION_MAP_NV 0x8
1246 #define TEXGEN_NORMAL_MAP_NV 0x10
1248 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1249 TEXGEN_REFLECTION_MAP_NV | \
1250 TEXGEN_NORMAL_MAP_NV)
1251 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1252 TEXGEN_REFLECTION_MAP_NV | \
1253 TEXGEN_NORMAL_MAP_NV | \
1259 /** Tex-gen enabled for texture unit? */
1260 #define ENABLE_TEXGEN(unit) (1 << (unit))
1262 /** Non-identity texture matrix for texture unit? */
1263 #define ENABLE_TEXMAT(unit) (1 << (unit))
1267 * Texture coord generation state.
1271 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1272 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1273 GLfloat ObjectPlane
[4];
1274 GLfloat EyePlane
[4];
1279 * Texture unit state. Contains enable flags, texture environment/function/
1280 * combiners, texgen state, and pointers to current texture objects.
1282 struct gl_texture_unit
1284 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1285 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1287 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1288 GLclampf EnvColor
[4];
1289 GLfloat EnvColorUnclamped
[4];
1291 struct gl_texgen GenS
;
1292 struct gl_texgen GenT
;
1293 struct gl_texgen GenR
;
1294 struct gl_texgen GenQ
;
1295 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1296 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1298 GLfloat LodBias
; /**< for biasing mipmap levels */
1300 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1302 /** Current sampler object (GL_ARB_sampler_objects) */
1303 struct gl_sampler_object
*Sampler
;
1306 * \name GL_EXT_texture_env_combine
1308 struct gl_tex_env_combine_state Combine
;
1311 * Derived state based on \c EnvMode and the \c BaseFormat of the
1312 * currently enabled texture.
1314 struct gl_tex_env_combine_state _EnvMode
;
1317 * Currently enabled combiner state. This will point to either
1318 * \c Combine or \c _EnvMode.
1320 struct gl_tex_env_combine_state
*_CurrentCombine
;
1322 /** Current texture object pointers */
1323 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1325 /** Points to highest priority, complete and enabled texture object */
1326 struct gl_texture_object
*_Current
;
1331 * Texture attribute group (GL_TEXTURE_BIT).
1333 struct gl_texture_attrib
1335 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1336 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1338 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1340 /** GL_ARB_texture_buffer_object */
1341 struct gl_buffer_object
*BufferObject
;
1343 /** GL_ARB_seamless_cubemap */
1344 GLboolean CubeMapSeamless
;
1346 /** Texture units/samplers used by vertex or fragment texturing */
1347 GLbitfield _EnabledUnits
;
1349 /** Texture coord units/sets used for fragment texturing */
1350 GLbitfield _EnabledCoordUnits
;
1352 /** Texture coord units that have texgen enabled */
1353 GLbitfield _TexGenEnabled
;
1355 /** Texture coord units that have non-identity matrices */
1356 GLbitfield _TexMatEnabled
;
1358 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1359 GLbitfield _GenFlags
;
1364 * Data structure representing a single clip plane (e.g. one of the elements
1365 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1367 typedef GLfloat gl_clip_plane
[4];
1371 * Transformation attribute group (GL_TRANSFORM_BIT).
1373 struct gl_transform_attrib
1375 GLenum MatrixMode
; /**< Matrix mode */
1376 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1377 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1378 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1379 GLboolean Normalize
; /**< Normalize all normals? */
1380 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1381 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1382 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1384 GLfloat CullEyePos
[4];
1385 GLfloat CullObjPos
[4];
1390 * Viewport attribute group (GL_VIEWPORT_BIT).
1392 struct gl_viewport_attrib
1394 GLint X
, Y
; /**< position */
1395 GLsizei Width
, Height
; /**< size */
1396 GLfloat Near
, Far
; /**< Depth buffer range */
1397 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1402 * GL_ARB_vertex/pixel_buffer_object buffer object
1404 struct gl_buffer_object
1406 _glthread_Mutex Mutex
;
1409 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1410 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1411 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1412 /** Fields describing a mapped buffer */
1414 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1415 GLvoid
*Pointer
; /**< User-space address of mapping */
1416 GLintptr Offset
; /**< Mapped offset */
1417 GLsizeiptr Length
; /**< Mapped length */
1419 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1420 GLboolean Written
; /**< Ever written to? (for debugging) */
1421 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1426 * Client pixel packing/unpacking attributes
1428 struct gl_pixelstore_attrib
1436 GLboolean SwapBytes
;
1438 GLboolean Invert
; /**< GL_MESA_pack_invert */
1439 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1444 * Client vertex array attributes
1446 struct gl_client_array
1448 GLint Size
; /**< components per element (1,2,3,4) */
1449 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1450 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1451 GLsizei Stride
; /**< user-specified stride */
1452 GLsizei StrideB
; /**< actual stride in bytes */
1453 const GLubyte
*Ptr
; /**< Points to array data */
1454 GLboolean Enabled
; /**< Enabled flag is a boolean */
1455 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1456 GLboolean Integer
; /**< Integer-valued? */
1457 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1458 GLuint _ElementSize
; /**< size of each element in bytes */
1460 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1461 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1466 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1467 * extension, but a nice encapsulation in any case.
1469 struct gl_array_object
1471 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1475 _glthread_Mutex Mutex
;
1478 * Does the VAO use ARB semantics or Apple semantics?
1480 * There are several ways in which ARB_vertex_array_object and
1481 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1484 * - ARB VAOs require that all array data be sourced from vertex buffer
1485 * objects, but Apple VAOs do not.
1487 * - ARB VAOs require that names come from GenVertexArrays.
1489 * This flag notes which behavior governs this VAO.
1491 GLboolean ARBsemantics
;
1494 * Has this array object been bound?
1496 GLboolean EverBound
;
1498 /** Vertex attribute arrays */
1499 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1501 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1502 GLbitfield64 _Enabled
;
1505 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1506 * we can determine the max legal (in bounds) glDrawElements array index.
1510 struct gl_buffer_object
*ElementArrayBufferObj
;
1515 * Vertex array state
1517 struct gl_array_attrib
1519 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1520 struct gl_array_object
*ArrayObj
;
1522 /** The default vertex array object */
1523 struct gl_array_object
*DefaultArrayObj
;
1525 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1526 struct _mesa_HashTable
*Objects
;
1528 GLint ActiveTexture
; /**< Client Active Texture */
1529 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1530 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1533 * \name Primitive restart controls
1535 * Primitive restart is enabled if either \c PrimitiveRestart or
1536 * \c PrimitiveRestartFixedIndex is set.
1539 GLboolean PrimitiveRestart
;
1540 GLboolean PrimitiveRestartFixedIndex
;
1541 GLboolean _PrimitiveRestart
;
1542 GLuint RestartIndex
;
1545 /* GL_ARB_vertex_buffer_object */
1546 struct gl_buffer_object
*ArrayBufferObj
;
1549 * Vertex arrays as consumed by a driver.
1550 * The array pointer is set up only by the VBO module. */
1551 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1556 * Feedback buffer state
1561 GLbitfield _Mask
; /**< FB_* bits */
1569 * Selection buffer state
1573 GLuint
*Buffer
; /**< selection buffer */
1574 GLuint BufferSize
; /**< size of the selection buffer */
1575 GLuint BufferCount
; /**< number of values in the selection buffer */
1576 GLuint Hits
; /**< number of records in the selection buffer */
1577 GLuint NameStackDepth
; /**< name stack depth */
1578 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1579 GLboolean HitFlag
; /**< hit flag */
1580 GLfloat HitMinZ
; /**< minimum hit depth */
1581 GLfloat HitMaxZ
; /**< maximum hit depth */
1586 * 1-D Evaluator control points
1590 GLuint Order
; /**< Number of control points */
1591 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1592 GLfloat
*Points
; /**< Points to contiguous control points */
1597 * 2-D Evaluator control points
1601 GLuint Uorder
; /**< Number of control points in U dimension */
1602 GLuint Vorder
; /**< Number of control points in V dimension */
1605 GLfloat
*Points
; /**< Points to contiguous control points */
1610 * All evaluator control point state
1612 struct gl_evaluators
1618 struct gl_1d_map Map1Vertex3
;
1619 struct gl_1d_map Map1Vertex4
;
1620 struct gl_1d_map Map1Index
;
1621 struct gl_1d_map Map1Color4
;
1622 struct gl_1d_map Map1Normal
;
1623 struct gl_1d_map Map1Texture1
;
1624 struct gl_1d_map Map1Texture2
;
1625 struct gl_1d_map Map1Texture3
;
1626 struct gl_1d_map Map1Texture4
;
1633 struct gl_2d_map Map2Vertex3
;
1634 struct gl_2d_map Map2Vertex4
;
1635 struct gl_2d_map Map2Index
;
1636 struct gl_2d_map Map2Color4
;
1637 struct gl_2d_map Map2Normal
;
1638 struct gl_2d_map Map2Texture1
;
1639 struct gl_2d_map Map2Texture2
;
1640 struct gl_2d_map Map2Texture3
;
1641 struct gl_2d_map Map2Texture4
;
1646 struct gl_transform_feedback_varying_info
1655 * Per-output info vertex shaders for transform feedback.
1657 struct gl_transform_feedback_output
1659 unsigned OutputRegister
;
1660 unsigned OutputBuffer
;
1661 unsigned NumComponents
;
1663 /** offset (in DWORDs) of this output within the interleaved structure */
1667 * Offset into the output register of the data to output. For example,
1668 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1669 * offset is in the y and z components of the output register.
1671 unsigned ComponentOffset
;
1675 /** Post-link transform feedback info. */
1676 struct gl_transform_feedback_info
1678 unsigned NumOutputs
;
1681 * Number of transform feedback buffers in use by this program.
1683 unsigned NumBuffers
;
1685 struct gl_transform_feedback_output
*Outputs
;
1687 /** Transform feedback varyings used for the linking of this shader program.
1689 * Use for glGetTransformFeedbackVarying().
1691 struct gl_transform_feedback_varying_info
*Varyings
;
1695 * Total number of components stored in each buffer. This may be used by
1696 * hardware back-ends to determine the correct stride when interleaving
1697 * multiple transform feedback outputs in the same buffer.
1699 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1704 * Transform feedback object state
1706 struct gl_transform_feedback_object
1708 GLuint Name
; /**< AKA the object ID */
1710 GLboolean Active
; /**< Is transform feedback enabled? */
1711 GLboolean Paused
; /**< Is transform feedback paused? */
1712 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1714 GLboolean EverBound
; /**< Has this object been bound? */
1717 * GLES: if Active is true, remaining number of primitives which can be
1718 * rendered without overflow. This is necessary to track because GLES
1719 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1720 * glDrawArraysInstanced would overflow transform feedback buffers.
1721 * Undefined if Active is false.
1723 * Not tracked for desktop GL since it's unnecessary.
1725 unsigned GlesRemainingPrims
;
1727 /** The feedback buffers */
1728 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1729 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1731 /** Start of feedback data in dest buffer */
1732 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1735 * Max data to put into dest buffer (in bytes). Computed based on
1736 * RequestedSize and the actual size of the buffer.
1738 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1741 * Size that was specified when the buffer was bound. If the buffer was
1742 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1745 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1750 * Context state for transform feedback.
1752 struct gl_transform_feedback_state
1754 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1756 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1757 struct gl_buffer_object
*CurrentBuffer
;
1759 /** The table of all transform feedback objects */
1760 struct _mesa_HashTable
*Objects
;
1762 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1763 struct gl_transform_feedback_object
*CurrentObject
;
1765 /** The default xform-fb object (Name==0) */
1766 struct gl_transform_feedback_object
*DefaultObject
;
1771 * Names of the various vertex/fragment program register files, etc.
1773 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1774 * All values should fit in a 4-bit field.
1776 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR,
1777 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1778 * be "uniform" variables since they can only be set outside glBegin/End.
1779 * They're also all stored in the same Parameters array.
1783 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1784 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1785 PROGRAM_INPUT
, /**< machine->Inputs[] */
1786 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1787 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1788 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1789 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1790 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1791 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1792 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1793 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1794 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1795 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1796 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1802 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1803 * one of these values.
1807 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1808 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1809 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1810 SYSTEM_VALUE_MAX
/**< Number of values */
1815 * The possible interpolation qualifiers that can be applied to a fragment
1816 * shader input in GLSL.
1818 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1819 * gl_fragment_program data structure to 0 causes the default behavior.
1821 enum glsl_interp_qualifier
1823 INTERP_QUALIFIER_NONE
= 0,
1824 INTERP_QUALIFIER_SMOOTH
,
1825 INTERP_QUALIFIER_FLAT
,
1826 INTERP_QUALIFIER_NOPERSPECTIVE
,
1827 INTERP_QUALIFIER_COUNT
/**< Number of interpolation qualifiers */
1832 * \brief Layout qualifiers for gl_FragDepth.
1834 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
1835 * a layout qualifier.
1837 * \see enum ir_depth_layout
1839 enum gl_frag_depth_layout
1841 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
1842 FRAG_DEPTH_LAYOUT_ANY
,
1843 FRAG_DEPTH_LAYOUT_GREATER
,
1844 FRAG_DEPTH_LAYOUT_LESS
,
1845 FRAG_DEPTH_LAYOUT_UNCHANGED
1850 * Base class for any kind of program object
1855 GLubyte
*String
; /**< Null-terminated program text */
1857 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB */
1858 GLenum Format
; /**< String encoding format */
1860 struct prog_instruction
*Instructions
;
1862 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1863 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1864 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1865 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1866 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1867 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1868 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1869 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1872 /** Named parameters, constants, etc. from program text */
1873 struct gl_program_parameter_list
*Parameters
;
1874 /** Numbered local parameters */
1875 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1877 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1878 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1880 /** Bitmask of which register files are read/written with indirect
1881 * addressing. Mask of (1 << PROGRAM_x) bits.
1883 GLbitfield IndirectRegisterFiles
;
1885 /** Logical counts */
1887 GLuint NumInstructions
;
1888 GLuint NumTemporaries
;
1889 GLuint NumParameters
;
1890 GLuint NumAttributes
;
1891 GLuint NumAddressRegs
;
1892 GLuint NumAluInstructions
;
1893 GLuint NumTexInstructions
;
1894 GLuint NumTexIndirections
;
1896 /** Native, actual h/w counts */
1898 GLuint NumNativeInstructions
;
1899 GLuint NumNativeTemporaries
;
1900 GLuint NumNativeParameters
;
1901 GLuint NumNativeAttributes
;
1902 GLuint NumNativeAddressRegs
;
1903 GLuint NumNativeAluInstructions
;
1904 GLuint NumNativeTexInstructions
;
1905 GLuint NumNativeTexIndirections
;
1910 /** Vertex program object */
1911 struct gl_vertex_program
1913 struct gl_program Base
; /**< base class */
1914 GLboolean IsPositionInvariant
;
1915 GLboolean UsesClipDistance
;
1919 /** Geometry program object */
1920 struct gl_geometry_program
1922 struct gl_program Base
; /**< base class */
1925 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1926 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1927 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1931 /** Fragment program object */
1932 struct gl_fragment_program
1934 struct gl_program Base
; /**< base class */
1935 GLboolean UsesKill
; /**< shader uses KIL instruction */
1936 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
1937 GLboolean OriginUpperLeft
;
1938 GLboolean PixelCenterInteger
;
1939 enum gl_frag_depth_layout FragDepthLayout
;
1942 * GLSL interpolation qualifier associated with each fragment shader input.
1943 * For inputs that do not have an interpolation qualifier specified in
1944 * GLSL, the value is INTERP_QUALIFIER_NONE.
1946 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
1949 * Bitfield indicating, for each fragment shader input, 1 if that input
1950 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
1952 GLbitfield64 IsCentroid
;
1957 * State common to vertex and fragment programs.
1959 struct gl_program_state
1961 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1962 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1967 * Context state for vertex programs.
1969 struct gl_vertex_program_state
1971 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1972 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1973 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1974 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1975 /** Computed two sided lighting for fixed function/programs. */
1976 GLboolean _TwoSideEnabled
;
1977 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1979 /** Currently enabled and valid vertex program (including internal
1980 * programs, user-defined vertex programs and GLSL vertex shaders).
1981 * This is the program we must use when rendering.
1983 struct gl_vertex_program
*_Current
;
1985 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1987 /** Should fixed-function T&L be implemented with a vertex prog? */
1988 GLboolean _MaintainTnlProgram
;
1990 /** Program to emulate fixed-function T&L (see above) */
1991 struct gl_vertex_program
*_TnlProgram
;
1993 /** Cache of fixed-function programs */
1994 struct gl_program_cache
*Cache
;
1996 GLboolean _Overriden
;
2001 * Context state for geometry programs.
2003 struct gl_geometry_program_state
2005 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2006 GLboolean _Enabled
; /**< Enabled and valid program? */
2007 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2009 /** Currently enabled and valid program (including internal programs
2010 * and compiled shader programs).
2012 struct gl_geometry_program
*_Current
;
2014 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2016 /** Cache of fixed-function programs */
2017 struct gl_program_cache
*Cache
;
2021 * Context state for fragment programs.
2023 struct gl_fragment_program_state
2025 GLboolean Enabled
; /**< User-set fragment program enable flag */
2026 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2027 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2029 /** Currently enabled and valid fragment program (including internal
2030 * programs, user-defined fragment programs and GLSL fragment shaders).
2031 * This is the program we must use when rendering.
2033 struct gl_fragment_program
*_Current
;
2035 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2037 /** Should fixed-function texturing be implemented with a fragment prog? */
2038 GLboolean _MaintainTexEnvProgram
;
2040 /** Program to emulate fixed-function texture env/combine (see above) */
2041 struct gl_fragment_program
*_TexEnvProgram
;
2043 /** Cache of fixed-function programs */
2044 struct gl_program_cache
*Cache
;
2049 * ATI_fragment_shader runtime state
2051 #define ATI_FS_INPUT_PRIMARY 0
2052 #define ATI_FS_INPUT_SECONDARY 1
2054 struct atifs_instruction
;
2055 struct atifs_setupinst
;
2058 * ATI fragment shader
2060 struct ati_fragment_shader
2064 struct atifs_instruction
*Instructions
[2];
2065 struct atifs_setupinst
*SetupInst
[2];
2066 GLfloat Constants
[8][4];
2067 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2068 GLubyte numArithInstr
[2];
2069 GLubyte regsAssigned
[2];
2070 GLubyte NumPasses
; /**< 1 or 2 */
2072 GLubyte last_optype
;
2073 GLboolean interpinp1
;
2079 * Context state for GL_ATI_fragment_shader
2081 struct gl_ati_fragment_shader_state
2084 GLboolean _Enabled
; /**< enabled and valid shader? */
2085 GLboolean Compiling
;
2086 GLfloat GlobalConstants
[8][4];
2087 struct ati_fragment_shader
*Current
;
2091 /** Set by #pragma directives */
2092 struct gl_sl_pragmas
2094 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2095 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2096 GLboolean Optimize
; /**< defaults on */
2097 GLboolean Debug
; /**< defaults off */
2102 * A GLSL vertex or fragment shader object.
2106 GLenum Type
; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2107 GLuint Name
; /**< AKA the handle */
2108 GLint RefCount
; /**< Reference count */
2109 GLboolean DeletePending
;
2110 GLboolean CompileStatus
;
2111 const GLchar
*Source
; /**< Source code string */
2112 GLuint SourceChecksum
; /**< for debug/logging purposes */
2113 struct gl_program
*Program
; /**< Post-compile assembly code */
2115 struct gl_sl_pragmas Pragmas
;
2117 unsigned Version
; /**< GLSL version used for linking */
2118 GLboolean IsES
; /**< True if this shader uses GLSL ES */
2121 * \name Sampler tracking
2123 * \note Each of these fields is only set post-linking.
2126 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2127 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2128 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2132 * Map from sampler unit to texture unit (set by glUniform1i())
2134 * A sampler unit is associated with each sampler uniform by the linker.
2135 * The sampler unit associated with each uniform is stored in the
2136 * \c gl_uniform_storage::sampler field.
2138 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2139 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2140 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2143 * Number of default uniform block components used by this shader.
2145 * This field is only set post-linking.
2147 unsigned num_uniform_components
;
2150 * Number of combined uniform components used by this shader.
2152 * This field is only set post-linking. It is the sum of the uniform block
2153 * sizes divided by sizeof(float), and num_uniform_compoennts.
2155 unsigned num_combined_uniform_components
;
2158 * This shader's uniform block information.
2160 * The offsets of the variables are assigned only for shaders in a program's
2163 struct gl_uniform_block
*UniformBlocks
;
2164 unsigned NumUniformBlocks
;
2166 struct exec_list
*ir
;
2167 struct glsl_symbol_table
*symbols
;
2169 /** Shaders containing built-in functions that are used for linking. */
2170 struct gl_shader
*builtins_to_link
[16];
2171 unsigned num_builtins_to_link
;
2176 * Shader stages. Note that these will become 5 with tessellation.
2177 * These MUST have the same values as gallium's PIPE_SHADER_*
2181 MESA_SHADER_VERTEX
= 0,
2182 MESA_SHADER_FRAGMENT
= 1,
2183 MESA_SHADER_GEOMETRY
= 2,
2184 MESA_SHADER_TYPES
= 3
2187 struct gl_uniform_buffer_variable
2192 * Name of the uniform as seen by glGetUniformIndices.
2194 * glGetUniformIndices requires that the block instance index \b not be
2195 * present in the name of queried uniforms.
2198 * \c gl_uniform_buffer_variable::IndexName and
2199 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2203 const struct glsl_type
*Type
;
2204 unsigned int Offset
;
2208 enum gl_uniform_block_packing
{
2214 struct gl_uniform_block
2216 /** Declared name of the uniform block */
2219 /** Array of supplemental information about UBO ir_variables. */
2220 struct gl_uniform_buffer_variable
*Uniforms
;
2224 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2225 * with glBindBufferBase to bind a buffer object to this uniform block. When
2226 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2231 * Minimum size of a buffer object to back this uniform buffer
2232 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2234 GLuint UniformBufferSize
;
2237 * Layout specified in the shader
2239 * This isn't accessible through the API, but it is used while
2240 * cross-validating uniform blocks.
2242 enum gl_uniform_block_packing _Packing
;
2246 * A GLSL program object.
2247 * Basically a linked collection of vertex and fragment shaders.
2249 struct gl_shader_program
2251 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2252 GLuint Name
; /**< aka handle or ID */
2253 GLint RefCount
; /**< Reference count */
2254 GLboolean DeletePending
;
2257 * Is the application intending to glGetProgramBinary this program?
2259 GLboolean BinaryRetreivableHint
;
2262 * Flags that the linker should not reject the program if it lacks
2263 * a vertex or fragment shader. GLES2 doesn't allow separate
2264 * shader objects, and would reject them. However, we internally
2265 * build separate shader objects for fixed function programs, which
2266 * we use for drivers/common/meta.c and for handling
2267 * _mesa_update_state with no program bound (for example in
2270 GLboolean InternalSeparateShader
;
2272 GLuint NumShaders
; /**< number of attached shaders */
2273 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2276 * User-defined attribute bindings
2278 * These are set via \c glBindAttribLocation and are used to direct the
2279 * GLSL linker. These are \b not the values used in the compiled shader,
2280 * and they are \b not the values returned by \c glGetAttribLocation.
2282 struct string_to_uint_map
*AttributeBindings
;
2285 * User-defined fragment data bindings
2287 * These are set via \c glBindFragDataLocation and are used to direct the
2288 * GLSL linker. These are \b not the values used in the compiled shader,
2289 * and they are \b not the values returned by \c glGetFragDataLocation.
2291 struct string_to_uint_map
*FragDataBindings
;
2292 struct string_to_uint_map
*FragDataIndexBindings
;
2295 * Transform feedback varyings last specified by
2296 * glTransformFeedbackVaryings().
2298 * For the current set of transform feeedback varyings used for transform
2299 * feedback output, see LinkedTransformFeedback.
2304 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2305 } TransformFeedback
;
2307 /** Post-link transform feedback info. */
2308 struct gl_transform_feedback_info LinkedTransformFeedback
;
2310 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2311 enum gl_frag_depth_layout FragDepthLayout
;
2313 /** Geometry shader state - copied into gl_geometry_program at link time */
2316 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2317 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2318 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2321 /** Vertex shader state - copied into gl_vertex_program at link time */
2323 GLboolean UsesClipDistance
; /**< True if gl_ClipDistance is written to. */
2324 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2325 0 if not present. */
2328 /* post-link info: */
2329 unsigned NumUserUniformStorage
;
2330 struct gl_uniform_storage
*UniformStorage
;
2332 struct gl_uniform_block
*UniformBlocks
;
2333 unsigned NumUniformBlocks
;
2336 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2337 * they're used in, or -1.
2339 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2340 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2342 int *UniformBlockStageIndex
[MESA_SHADER_TYPES
];
2345 * Map of active uniform names to locations
2347 * Maps any active uniform that is not an array element to a location.
2348 * Each active uniform, including individual structure members will appear
2349 * in this map. This roughly corresponds to the set of names that would be
2350 * enumerated by \c glGetActiveUniform.
2352 struct string_to_uint_map
*UniformHash
;
2354 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2355 GLboolean Validated
;
2356 GLboolean _Used
; /**< Ever used for drawing? */
2359 unsigned Version
; /**< GLSL version used for linking */
2360 GLboolean IsES
; /**< True if this program uses GLSL ES */
2363 * Per-stage shaders resulting from the first stage of linking.
2365 * Set of linked shaders for this program. The array is accessed using the
2366 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2369 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2373 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2374 #define GLSL_LOG 0x2 /**< Write shaders to files */
2375 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2376 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2377 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2378 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2379 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2380 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2381 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2385 * Context state for GLSL vertex/fragment shaders.
2387 struct gl_shader_state
2390 * Programs used for rendering
2392 * There is a separate program set for each shader stage. If
2393 * GL_EXT_separate_shader_objects is not supported, each of these must point
2394 * to \c NULL or to the same program.
2396 struct gl_shader_program
*CurrentVertexProgram
;
2397 struct gl_shader_program
*CurrentGeometryProgram
;
2398 struct gl_shader_program
*CurrentFragmentProgram
;
2400 struct gl_shader_program
*_CurrentFragmentProgram
;
2403 * Program used by glUniform calls.
2405 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2407 struct gl_shader_program
*ActiveProgram
;
2409 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2414 * Compiler options for a single GLSL shaders type
2416 struct gl_shader_compiler_options
2418 /** Driver-selectable options: */
2419 GLboolean EmitCondCodes
; /**< Use condition codes? */
2420 GLboolean EmitNoLoops
;
2421 GLboolean EmitNoFunctions
;
2422 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2423 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2424 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2425 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2426 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2429 * \name Forms of indirect addressing the driver cannot do.
2432 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2433 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2434 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2435 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2438 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2439 GLuint MaxUnrollIterations
;
2442 * Prefer DP4 instructions (rather than MUL/MAD) for matrix * vector
2443 * operations, such as position transformation.
2445 GLboolean PreferDP4
;
2447 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2452 * Occlusion/timer query object.
2454 struct gl_query_object
2456 GLenum Target
; /**< The query target, when active */
2457 GLuint Id
; /**< hash table ID/name */
2458 GLuint64EXT Result
; /**< the counter */
2459 GLboolean Active
; /**< inside Begin/EndQuery */
2460 GLboolean Ready
; /**< result is ready? */
2461 GLboolean EverBound
;/**< has query object ever been bound */
2466 * Context state for query objects.
2468 struct gl_query_state
2470 struct _mesa_HashTable
*QueryObjects
;
2471 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2472 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2474 /** GL_NV_conditional_render */
2475 struct gl_query_object
*CondRenderQuery
;
2477 /** GL_EXT_transform_feedback */
2478 struct gl_query_object
*PrimitivesGenerated
;
2479 struct gl_query_object
*PrimitivesWritten
;
2481 /** GL_ARB_timer_query */
2482 struct gl_query_object
*TimeElapsed
;
2484 GLenum CondRenderMode
;
2488 /** Sync object state */
2489 struct gl_sync_object
2491 GLenum Type
; /**< GL_SYNC_FENCE */
2492 GLuint Name
; /**< Fence name */
2493 GLint RefCount
; /**< Reference count */
2494 GLboolean DeletePending
; /**< Object was deleted while there were still
2495 * live references (e.g., sync not yet finished)
2497 GLenum SyncCondition
;
2498 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2499 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2504 * State which can be shared by multiple contexts:
2506 struct gl_shared_state
2508 _glthread_Mutex Mutex
; /**< for thread safety */
2509 GLint RefCount
; /**< Reference count */
2510 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2511 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2513 /** Default texture objects (shared by all texture units) */
2514 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2516 /** Fallback texture used when a bound texture is incomplete */
2517 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2520 * \name Thread safety and statechange notification for texture
2523 * \todo Improve the granularity of locking.
2526 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2527 GLuint TextureStateStamp
; /**< state notification for shared tex */
2530 /** Default buffer object for vertex arrays that aren't in VBOs */
2531 struct gl_buffer_object
*NullBufferObj
;
2534 * \name Vertex/geometry/fragment programs
2537 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2538 struct gl_vertex_program
*DefaultVertexProgram
;
2539 struct gl_fragment_program
*DefaultFragmentProgram
;
2540 struct gl_geometry_program
*DefaultGeometryProgram
;
2543 /* GL_ATI_fragment_shader */
2544 struct _mesa_HashTable
*ATIShaders
;
2545 struct ati_fragment_shader
*DefaultFragmentShader
;
2547 struct _mesa_HashTable
*BufferObjects
;
2549 /** Table of both gl_shader and gl_shader_program objects */
2550 struct _mesa_HashTable
*ShaderObjects
;
2552 /* GL_EXT_framebuffer_object */
2553 struct _mesa_HashTable
*RenderBuffers
;
2554 struct _mesa_HashTable
*FrameBuffers
;
2557 struct set
*SyncObjects
;
2559 /** GL_ARB_sampler_objects */
2560 struct _mesa_HashTable
*SamplerObjects
;
2566 * Renderbuffers represent drawing surfaces such as color, depth and/or
2567 * stencil. A framebuffer object has a set of renderbuffers.
2568 * Drivers will typically derive subclasses of this type.
2570 struct gl_renderbuffer
2572 _glthread_Mutex Mutex
; /**< for thread safety */
2573 GLuint ClassID
; /**< Useful for drivers */
2576 GLuint Width
, Height
;
2578 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2579 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2581 * True for renderbuffers that wrap textures, giving the driver a chance to
2582 * flush render caches through the FinishRenderTexture hook.
2584 * Drivers may also set this on renderbuffers other than those generated by
2585 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2586 * called without a rb->TexImage.
2588 GLboolean NeedsFinishRenderTexture
;
2590 GLenum InternalFormat
; /**< The user-specified format */
2591 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2592 GL_STENCIL_INDEX. */
2593 gl_format Format
; /**< The actual renderbuffer memory format */
2595 * Pointer to the texture image if this renderbuffer wraps a texture,
2598 * Note that the reference on the gl_texture_object containing this
2599 * TexImage is held by the gl_renderbuffer_attachment.
2601 struct gl_texture_image
*TexImage
;
2603 /** Delete this renderbuffer */
2604 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
2606 /** Allocate new storage for this renderbuffer */
2607 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
2608 struct gl_renderbuffer
*rb
,
2609 GLenum internalFormat
,
2610 GLuint width
, GLuint height
);
2615 * A renderbuffer attachment points to either a texture object (and specifies
2616 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2618 struct gl_renderbuffer_attachment
2620 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2624 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2625 * application supplied renderbuffer object.
2627 struct gl_renderbuffer
*Renderbuffer
;
2630 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2631 * supplied texture object.
2633 struct gl_texture_object
*Texture
;
2634 GLuint TextureLevel
; /**< Attached mipmap level. */
2635 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2636 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2637 * and 2D array textures */
2643 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2644 * In C++ terms, think of this as a base class from which device drivers
2645 * will make derived classes.
2647 struct gl_framebuffer
2649 _glthread_Mutex Mutex
; /**< for thread safety */
2651 * If zero, this is a window system framebuffer. If non-zero, this
2652 * is a FBO framebuffer; note that for some devices (i.e. those with
2653 * a natural pixel coordinate system for FBOs that differs from the
2654 * OpenGL/Mesa coordinate system), this means that the viewport,
2655 * polygon face orientation, and polygon stipple will have to be inverted.
2660 GLboolean DeletePending
;
2663 * The framebuffer's visual. Immutable if this is a window system buffer.
2664 * Computed from attachments if user-made FBO.
2666 struct gl_config Visual
;
2668 GLboolean Initialized
;
2670 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2672 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2674 GLint _Xmin
, _Xmax
; /**< inclusive */
2675 GLint _Ymin
, _Ymax
; /**< exclusive */
2678 /** \name Derived Z buffer stuff */
2680 GLuint _DepthMax
; /**< Max depth buffer value */
2681 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2682 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2685 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2688 /** Integer color values */
2689 GLboolean _IntegerColor
;
2691 /* ARB_color_buffer_float */
2692 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
2693 GLboolean _HasSNormOrFloatColorBuffer
;
2695 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2696 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2698 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2699 * attribute group and GL_PIXEL attribute group, respectively.
2701 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2702 GLenum ColorReadBuffer
;
2704 /** Computed from ColorDraw/ReadBuffer above */
2705 GLuint _NumColorDrawBuffers
;
2706 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2707 GLint _ColorReadBufferIndex
; /* -1 = None */
2708 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2709 struct gl_renderbuffer
*_ColorReadBuffer
;
2713 /** Delete this framebuffer */
2714 void (*Delete
)(struct gl_framebuffer
*fb
);
2719 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2723 GLushort RangeMin
; /**< min value exponent */
2724 GLushort RangeMax
; /**< max value exponent */
2725 GLushort Precision
; /**< number of mantissa bits */
2730 * Limits for vertex, geometry and fragment programs/shaders.
2732 struct gl_program_constants
2734 /* logical limits */
2735 GLuint MaxInstructions
;
2736 GLuint MaxAluInstructions
;
2737 GLuint MaxTexInstructions
;
2738 GLuint MaxTexIndirections
;
2741 GLuint MaxAddressRegs
;
2742 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2743 GLuint MaxParameters
;
2744 GLuint MaxLocalParams
;
2745 GLuint MaxEnvParams
;
2746 /* native/hardware limits */
2747 GLuint MaxNativeInstructions
;
2748 GLuint MaxNativeAluInstructions
;
2749 GLuint MaxNativeTexInstructions
;
2750 GLuint MaxNativeTexIndirections
;
2751 GLuint MaxNativeAttribs
;
2752 GLuint MaxNativeTemps
;
2753 GLuint MaxNativeAddressRegs
;
2754 GLuint MaxNativeParameters
;
2756 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2757 /* ES 2.0 and GL_ARB_ES2_compatibility */
2758 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2759 struct gl_precision LowInt
, MediumInt
, HighInt
;
2760 /* GL_ARB_uniform_buffer_object */
2761 GLuint MaxUniformBlocks
;
2762 GLuint MaxCombinedUniformComponents
;
2763 GLuint MaxTextureImageUnits
;
2768 * Constants which may be overridden by device driver during context creation
2769 * but are never changed after that.
2773 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
2774 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
2775 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2776 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2777 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
2778 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2779 GLuint MaxTextureCoordUnits
;
2780 GLuint MaxCombinedTextureImageUnits
;
2781 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
2782 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2783 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2784 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2786 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
2788 GLuint MaxArrayLockSize
;
2792 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2793 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2794 GLfloat PointSizeGranularity
;
2795 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2796 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2797 GLfloat LineWidthGranularity
;
2799 GLuint MaxClipPlanes
;
2801 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2802 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2804 GLuint MaxViewportWidth
, MaxViewportHeight
;
2806 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2807 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2808 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2809 GLuint MaxProgramMatrices
;
2810 GLuint MaxProgramMatrixStackDepth
;
2813 GLuint SamplesPassed
;
2816 GLuint PrimitivesGenerated
;
2817 GLuint PrimitivesWritten
;
2820 /** vertex array / buffer object bounds checking */
2821 GLboolean CheckArrayBounds
;
2823 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2825 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2826 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2827 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2829 /** Number of varying vectors between any two shader stages. */
2831 GLuint MaxVaryingComponents
;
2834 * GL_ARB_uniform_buffer_object
2836 GLuint MaxCombinedUniformBlocks
;
2837 GLuint MaxUniformBufferBindings
;
2838 GLuint MaxUniformBlockSize
;
2839 GLuint UniformBufferOffsetAlignment
;
2842 /** GL_ARB_geometry_shader4 */
2843 GLuint MaxGeometryOutputVertices
;
2844 GLuint MaxGeometryTotalOutputComponents
;
2846 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2849 * Changes default GLSL extension behavior from "error" to "warn". It's out
2850 * of spec, but it can make some apps work that otherwise wouldn't.
2852 GLboolean ForceGLSLExtensionsWarn
;
2855 * Does the driver support real 32-bit integers? (Otherwise, integers are
2856 * simulated via floats.)
2858 GLboolean NativeIntegers
;
2861 * If the driver supports real 32-bit integers, what integer value should be
2862 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2864 GLuint UniformBooleanTrue
;
2866 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2867 GLbitfield SupportedBumpUnits
;
2870 * Maximum amount of time, measured in nanseconds, that the server can wait.
2872 GLuint64 MaxServerWaitTimeout
;
2874 /** GL_EXT_provoking_vertex */
2875 GLboolean QuadsFollowProvokingVertexConvention
;
2877 /** OpenGL version 3.0 */
2878 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2880 /** OpenGL version 3.2 */
2881 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2883 /** GL_EXT_transform_feedback */
2884 GLuint MaxTransformFeedbackBuffers
;
2885 GLuint MaxTransformFeedbackSeparateComponents
;
2886 GLuint MaxTransformFeedbackInterleavedComponents
;
2887 GLuint MaxVertexStreams
;
2889 /** GL_EXT_gpu_shader4 */
2890 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2892 /* GL_ARB_robustness */
2893 GLenum ResetStrategy
;
2895 /* GL_ARB_blend_func_extended */
2896 GLuint MaxDualSourceDrawBuffers
;
2899 * Whether the implementation strips out and ignores texture borders.
2901 * Many GPU hardware implementations don't support rendering with texture
2902 * borders and mipmapped textures. (Note: not static border color, but the
2903 * old 1-pixel border around each edge). Implementations then have to do
2904 * slow fallbacks to be correct, or just ignore the border and be fast but
2905 * wrong. Setting the flag strips the border off of TexImage calls,
2906 * providing "fast but wrong" at significantly reduced driver complexity.
2908 * Texture borders are deprecated in GL 3.0.
2910 GLboolean StripTextureBorder
;
2913 * For drivers which can do a better job at eliminating unused varyings
2914 * and uniforms than the GLSL compiler.
2916 * XXX Remove these as soon as a better solution is available.
2918 GLboolean GLSLSkipStrictMaxVaryingLimitCheck
;
2919 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
2922 * Force software support for primitive restart in the VBO module.
2924 GLboolean PrimitiveRestartInSoftware
;
2926 /** GL_ARB_map_buffer_alignment */
2927 GLuint MinMapBufferAlignment
;
2930 * Disable varying packing. This is out of spec, but potentially useful
2931 * for older platforms that supports a limited number of texture
2932 * indirections--on these platforms, unpacking the varyings in the fragment
2933 * shader increases the number of texture indirections by 1, which might
2934 * make some shaders not executable at all.
2936 * Drivers that support transform feedback must set this value to GL_FALSE.
2938 GLboolean DisableVaryingPacking
;
2941 * Maximum value supported for an index in DrawElements and friends.
2943 * This must be at least (1ull<<24)-1. The default value is
2946 * \since ES 3.0 or GL_ARB_ES3_compatibility
2947 * \sa _mesa_init_constants
2949 GLuint64 MaxElementIndex
;
2952 * Disable interpretation of line continuations (lines ending with a
2953 * backslash character ('\') in GLSL source.
2955 GLboolean DisableGLSLLineContinuations
;
2957 /** GL_ARB_texture_multisample */
2958 GLint MaxColorTextureSamples
;
2959 GLint MaxDepthTextureSamples
;
2960 GLint MaxIntegerSamples
;
2965 * Enable flag for each OpenGL extension. Different device drivers will
2966 * enable different extensions at runtime.
2968 struct gl_extensions
2970 GLboolean dummy
; /* don't remove this! */
2971 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
2972 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
2973 GLboolean ANGLE_texture_compression_dxt
;
2974 GLboolean ARB_ES2_compatibility
;
2975 GLboolean ARB_ES3_compatibility
;
2976 GLboolean ARB_base_instance
;
2977 GLboolean ARB_blend_func_extended
;
2978 GLboolean ARB_color_buffer_float
;
2979 GLboolean ARB_conservative_depth
;
2980 GLboolean ARB_depth_buffer_float
;
2981 GLboolean ARB_depth_clamp
;
2982 GLboolean ARB_depth_texture
;
2983 GLboolean ARB_draw_buffers_blend
;
2984 GLboolean ARB_draw_elements_base_vertex
;
2985 GLboolean ARB_draw_instanced
;
2986 GLboolean ARB_fragment_coord_conventions
;
2987 GLboolean ARB_fragment_program
;
2988 GLboolean ARB_fragment_program_shadow
;
2989 GLboolean ARB_fragment_shader
;
2990 GLboolean ARB_framebuffer_object
;
2991 GLboolean ARB_explicit_attrib_location
;
2992 GLboolean ARB_geometry_shader4
;
2993 GLboolean ARB_gpu_shader5
;
2994 GLboolean ARB_half_float_pixel
;
2995 GLboolean ARB_half_float_vertex
;
2996 GLboolean ARB_instanced_arrays
;
2997 GLboolean ARB_internalformat_query
;
2998 GLboolean ARB_map_buffer_alignment
;
2999 GLboolean ARB_map_buffer_range
;
3000 GLboolean ARB_occlusion_query
;
3001 GLboolean ARB_occlusion_query2
;
3002 GLboolean ARB_point_sprite
;
3003 GLboolean ARB_seamless_cube_map
;
3004 GLboolean ARB_shader_bit_encoding
;
3005 GLboolean ARB_shader_objects
;
3006 GLboolean ARB_shader_stencil_export
;
3007 GLboolean ARB_shader_texture_lod
;
3008 GLboolean ARB_shading_language_100
;
3009 GLboolean ARB_shading_language_packing
;
3010 GLboolean ARB_shadow
;
3012 GLboolean ARB_texture_border_clamp
;
3013 GLboolean ARB_texture_buffer_object
;
3014 GLboolean ARB_texture_buffer_object_rgb32
;
3015 GLboolean ARB_texture_buffer_range
;
3016 GLboolean ARB_texture_compression_rgtc
;
3017 GLboolean ARB_texture_cube_map
;
3018 GLboolean ARB_texture_cube_map_array
;
3019 GLboolean ARB_texture_env_combine
;
3020 GLboolean ARB_texture_env_crossbar
;
3021 GLboolean ARB_texture_env_dot3
;
3022 GLboolean ARB_texture_float
;
3023 GLboolean ARB_texture_multisample
;
3024 GLboolean ARB_texture_non_power_of_two
;
3025 GLboolean ARB_texture_query_lod
;
3026 GLboolean ARB_texture_rg
;
3027 GLboolean ARB_texture_rgb10_a2ui
;
3028 GLboolean ARB_texture_storage
;
3029 GLboolean ARB_texture_storage_multisample
;
3030 GLboolean ARB_timer_query
;
3031 GLboolean ARB_transform_feedback2
;
3032 GLboolean ARB_transform_feedback3
;
3033 GLboolean ARB_transform_feedback_instanced
;
3034 GLboolean ARB_uniform_buffer_object
;
3035 GLboolean ARB_vertex_program
;
3036 GLboolean ARB_vertex_shader
;
3037 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3038 GLboolean EXT_blend_color
;
3039 GLboolean EXT_blend_equation_separate
;
3040 GLboolean EXT_blend_func_separate
;
3041 GLboolean EXT_blend_minmax
;
3042 GLboolean EXT_clip_volume_hint
;
3043 GLboolean EXT_depth_bounds_test
;
3044 GLboolean EXT_draw_buffers2
;
3045 GLboolean EXT_fog_coord
;
3046 GLboolean EXT_framebuffer_blit
;
3047 GLboolean EXT_framebuffer_multisample
;
3048 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3049 GLboolean EXT_framebuffer_object
;
3050 GLboolean EXT_framebuffer_sRGB
;
3051 GLboolean EXT_gpu_program_parameters
;
3052 GLboolean EXT_gpu_shader4
;
3053 GLboolean EXT_packed_depth_stencil
;
3054 GLboolean EXT_packed_float
;
3055 GLboolean EXT_pixel_buffer_object
;
3056 GLboolean EXT_point_parameters
;
3057 GLboolean EXT_provoking_vertex
;
3058 GLboolean EXT_shadow_funcs
;
3059 GLboolean EXT_secondary_color
;
3060 GLboolean EXT_separate_shader_objects
;
3061 GLboolean EXT_stencil_two_side
;
3062 GLboolean EXT_texture3D
;
3063 GLboolean EXT_texture_array
;
3064 GLboolean EXT_texture_compression_latc
;
3065 GLboolean EXT_texture_compression_s3tc
;
3066 GLboolean EXT_texture_env_dot3
;
3067 GLboolean EXT_texture_filter_anisotropic
;
3068 GLboolean EXT_texture_integer
;
3069 GLboolean EXT_texture_mirror_clamp
;
3070 GLboolean EXT_texture_shared_exponent
;
3071 GLboolean EXT_texture_snorm
;
3072 GLboolean EXT_texture_sRGB
;
3073 GLboolean EXT_texture_sRGB_decode
;
3074 GLboolean EXT_texture_swizzle
;
3075 GLboolean EXT_transform_feedback
;
3076 GLboolean EXT_timer_query
;
3077 GLboolean EXT_vertex_array_bgra
;
3078 GLboolean OES_standard_derivatives
;
3079 /* vendor extensions */
3080 GLboolean AMD_seamless_cubemap_per_texture
;
3081 GLboolean AMD_vertex_shader_layer
;
3082 GLboolean APPLE_object_purgeable
;
3083 GLboolean ATI_envmap_bumpmap
;
3084 GLboolean ATI_texture_compression_3dc
;
3085 GLboolean ATI_texture_mirror_once
;
3086 GLboolean ATI_texture_env_combine3
;
3087 GLboolean ATI_fragment_shader
;
3088 GLboolean ATI_separate_stencil
;
3089 GLboolean MESA_pack_invert
;
3090 GLboolean MESA_resize_buffers
;
3091 GLboolean MESA_ycbcr_texture
;
3092 GLboolean MESA_texture_array
;
3093 GLboolean NV_blend_square
;
3094 GLboolean NV_conditional_render
;
3095 GLboolean NV_fog_distance
;
3096 GLboolean NV_fragment_program_option
;
3097 GLboolean NV_point_sprite
;
3098 GLboolean NV_primitive_restart
;
3099 GLboolean NV_texture_barrier
;
3100 GLboolean NV_texture_env_combine4
;
3101 GLboolean NV_texture_rectangle
;
3102 GLboolean TDFX_texture_compression_FXT1
;
3103 GLboolean OES_EGL_image
;
3104 GLboolean OES_draw_texture
;
3105 GLboolean OES_depth_texture_cube_map
;
3106 GLboolean OES_EGL_image_external
;
3107 GLboolean OES_compressed_ETC1_RGB8_texture
;
3108 GLboolean extension_sentinel
;
3109 /** The extension string */
3110 const GLubyte
*String
;
3111 /** Number of supported extensions */
3117 * A stack of matrices (projection, modelview, color, texture, etc).
3119 struct gl_matrix_stack
3121 GLmatrix
*Top
; /**< points into Stack */
3122 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3123 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3124 GLuint MaxDepth
; /**< size of Stack[] array */
3125 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3130 * \name Bits for image transfer operations
3131 * \sa __struct gl_contextRec::ImageTransferState.
3134 #define IMAGE_SCALE_BIAS_BIT 0x1
3135 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3136 #define IMAGE_MAP_COLOR_BIT 0x4
3137 #define IMAGE_CLAMP_BIT 0x800
3140 /** Pixel Transfer ops */
3141 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3142 IMAGE_SHIFT_OFFSET_BIT | \
3143 IMAGE_MAP_COLOR_BIT)
3146 * \name Bits to indicate what state has changed.
3149 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3150 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3151 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3152 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3153 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3154 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3155 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3156 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3157 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3158 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3159 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3160 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3161 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3162 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3163 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3164 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3165 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3166 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3167 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3168 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3169 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3170 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3171 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3172 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3173 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3174 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3175 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3176 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3177 #define _NEW_BUFFER_OBJECT (1 << 28)
3178 #define _NEW_FRAG_CLAMP (1 << 29)
3179 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3180 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3186 * Composite state flags
3189 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3195 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3205 /* This has to be included here. */
3210 * Display list flags.
3211 * Strictly this is a tnl-private concept, but it doesn't seem
3212 * worthwhile adding a tnl private structure just to hold this one bit
3215 #define DLIST_DANGLING_REFS 0x1
3218 /** Opaque declaration of display list payload data type */
3219 union gl_dlist_node
;
3223 * Provide a location where information about a display list can be
3224 * collected. Could be extended with driverPrivate structures,
3225 * etc. in the future.
3227 struct gl_display_list
3230 GLbitfield Flags
; /**< DLIST_x flags */
3231 /** The dlist commands are in a linked list of nodes */
3232 union gl_dlist_node
*Head
;
3237 * State used during display list compilation and execution.
3239 struct gl_dlist_state
3241 GLuint CallDepth
; /**< Current recursion calling depth */
3243 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3244 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3245 GLuint CurrentPos
; /**< Index into current block of nodes */
3247 GLvertexformat ListVtxfmt
;
3249 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3250 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3252 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3253 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3256 /* State known to have been set by the currently-compiling display
3257 * list. Used to eliminate some redundant state changes.
3265 * These are a mapping of the GL_ARB_debug_output enums to small enums
3266 * suitable for use as an array index.
3269 enum mesa_debug_source
{
3270 MESA_DEBUG_SOURCE_API
,
3271 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3272 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3273 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3274 MESA_DEBUG_SOURCE_APPLICATION
,
3275 MESA_DEBUG_SOURCE_OTHER
,
3276 MESA_DEBUG_SOURCE_COUNT
,
3279 enum mesa_debug_type
{
3280 MESA_DEBUG_TYPE_ERROR
,
3281 MESA_DEBUG_TYPE_DEPRECATED
,
3282 MESA_DEBUG_TYPE_UNDEFINED
,
3283 MESA_DEBUG_TYPE_PORTABILITY
,
3284 MESA_DEBUG_TYPE_PERFORMANCE
,
3285 MESA_DEBUG_TYPE_OTHER
,
3286 MESA_DEBUG_TYPE_COUNT
,
3289 enum mesa_debug_severity
{
3290 MESA_DEBUG_SEVERITY_LOW
,
3291 MESA_DEBUG_SEVERITY_MEDIUM
,
3292 MESA_DEBUG_SEVERITY_HIGH
,
3293 MESA_DEBUG_SEVERITY_COUNT
,
3299 * An error, warning, or other piece of debug information for an application
3300 * to consume via GL_ARB_debug_output.
3304 enum mesa_debug_source source
;
3305 enum mesa_debug_type type
;
3307 enum mesa_debug_severity severity
;
3312 struct gl_debug_namespace
3314 struct _mesa_HashTable
*IDs
;
3315 unsigned ZeroID
; /* a HashTable won't take zero, so store its state here */
3316 /** lists of IDs in the hash table at each severity */
3317 struct simple_node Severity
[MESA_DEBUG_SEVERITY_COUNT
];
3320 struct gl_debug_state
3322 GLDEBUGPROCARB Callback
;
3323 GLvoid
*CallbackData
;
3324 GLboolean SyncOutput
;
3325 GLboolean Defaults
[MESA_DEBUG_SEVERITY_COUNT
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3326 struct gl_debug_namespace Namespaces
[MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3327 struct gl_debug_msg Log
[MAX_DEBUG_LOGGED_MESSAGES
];
3330 GLint NextMsgLength
; /* redundant, but copied here from Log[NextMsg].length
3331 for the sake of the offsetof() code in get.c */
3335 * Enum for the OpenGL APIs we know about and may support.
3337 * NOTE: This must match the api_enum table in
3338 * src/mesa/main/get_hash_generator.py
3342 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
3346 API_OPENGL_LAST
= API_OPENGL_CORE
,
3350 * Driver-specific state flags.
3352 * These are or'd with gl_context::NewDriverState to notify a driver about
3353 * a state change. The driver sets the flags at context creation and
3354 * the meaning of the bits set is opaque to core Mesa.
3356 struct gl_driver_flags
3358 /** gl_context::Array::_DrawArrays (vertex array state) */
3359 GLbitfield NewArray
;
3361 /** gl_context::TransformFeedback::CurrentObject */
3362 GLbitfield NewTransformFeedback
;
3364 /** gl_context::RasterDiscard */
3365 GLbitfield NewRasterizerDiscard
;
3368 * gl_context::UniformBufferBindings
3369 * gl_shader_program::UniformBlocks
3371 GLbitfield NewUniformBuffer
;
3374 struct gl_uniform_buffer_binding
3376 struct gl_buffer_object
*BufferObject
;
3377 /** Start of uniform block data in the buffer */
3379 /** Size of data allowed to be referenced from the buffer (in bytes) */
3382 * glBindBufferBase() indicates that the Size should be ignored and only
3383 * limited by the current size of the BufferObject.
3385 GLboolean AutomaticSize
;
3389 * Mesa rendering context.
3391 * This is the central context data structure for Mesa. Almost all
3392 * OpenGL state is contained in this structure.
3393 * Think of this as a base class from which device drivers will derive
3396 * The struct gl_context typedef names this structure.
3400 /** State possibly shared with other contexts in the address space */
3401 struct gl_shared_state
*Shared
;
3403 /** \name API function pointer tables */
3407 * The current dispatch table for non-displaylist-saving execution, either
3408 * BeginEnd or OutsideBeginEnd
3410 struct _glapi_table
*Exec
;
3412 * The normal dispatch table for non-displaylist-saving, non-begin/end
3414 struct _glapi_table
*OutsideBeginEnd
;
3415 /** The dispatch table used between glNewList() and glEndList() */
3416 struct _glapi_table
*Save
;
3418 * The dispatch table used between glBegin() and glEnd() (outside of a
3419 * display list). Only valid functions between those two are set, which is
3420 * mostly just the set in a GLvertexformat struct.
3422 struct _glapi_table
*BeginEnd
;
3424 * Tracks the current dispatch table out of the 3 above, so that it can be
3425 * re-set on glXMakeCurrent().
3427 struct _glapi_table
*CurrentDispatch
;
3430 struct gl_config Visual
;
3431 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3432 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3433 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3434 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3437 * Device driver function pointer table
3439 struct dd_function_table Driver
;
3441 /** Core/Driver constants */
3442 struct gl_constants Const
;
3444 /** \name The various 4x4 matrix stacks */
3446 struct gl_matrix_stack ModelviewMatrixStack
;
3447 struct gl_matrix_stack ProjectionMatrixStack
;
3448 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3449 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3450 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3453 /** Combined modelview and projection matrix */
3454 GLmatrix _ModelProjectMatrix
;
3456 /** \name Display lists */
3457 struct gl_dlist_state ListState
;
3459 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3460 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3462 /** Extension information */
3463 struct gl_extensions Extensions
;
3465 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3467 char *VersionString
;
3469 /** \name State attribute stack (for glPush/PopAttrib) */
3471 GLuint AttribStackDepth
;
3472 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3475 /** \name Renderer attribute groups
3477 * We define a struct for each attribute group to make pushing and popping
3478 * attributes easy. Also it's a good organization.
3481 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3482 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3483 struct gl_current_attrib Current
; /**< Current attributes */
3484 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3485 struct gl_eval_attrib Eval
; /**< Eval attributes */
3486 struct gl_fog_attrib Fog
; /**< Fog attributes */
3487 struct gl_hint_attrib Hint
; /**< Hint attributes */
3488 struct gl_light_attrib Light
; /**< Light attributes */
3489 struct gl_line_attrib Line
; /**< Line attributes */
3490 struct gl_list_attrib List
; /**< List attributes */
3491 struct gl_multisample_attrib Multisample
;
3492 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3493 struct gl_point_attrib Point
; /**< Point attributes */
3494 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3495 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3496 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3497 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3498 struct gl_texture_attrib Texture
; /**< Texture attributes */
3499 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3500 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3503 /** \name Client attribute stack */
3505 GLuint ClientAttribStackDepth
;
3506 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3509 /** \name Client attribute groups */
3511 struct gl_array_attrib Array
; /**< Vertex arrays */
3512 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3513 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3514 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3517 /** \name Other assorted state (not pushed/popped on attribute stack) */
3519 struct gl_pixelmaps PixelMaps
;
3521 struct gl_evaluators EvalMap
; /**< All evaluators */
3522 struct gl_feedback Feedback
; /**< Feedback */
3523 struct gl_selection Select
; /**< Selection */
3525 struct gl_program_state Program
; /**< general program state */
3526 struct gl_vertex_program_state VertexProgram
;
3527 struct gl_fragment_program_state FragmentProgram
;
3528 struct gl_geometry_program_state GeometryProgram
;
3529 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3531 struct gl_shader_state Shader
; /**< GLSL shader object state */
3532 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3534 struct gl_query_state Query
; /**< occlusion, timer queries */
3536 struct gl_transform_feedback_state TransformFeedback
;
3538 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3539 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3542 * Current GL_ARB_uniform_buffer_object binding referenced by
3543 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
3545 struct gl_buffer_object
*UniformBuffer
;
3548 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
3549 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
3550 * associated with uniform blocks by glUniformBlockBinding()'s state in the
3553 struct gl_uniform_buffer_binding
3554 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
3558 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3560 /* GL_EXT_framebuffer_object */
3561 struct gl_renderbuffer
*CurrentRenderbuffer
;
3563 GLenum ErrorValue
; /**< Last error code */
3565 /* GL_ARB_robustness */
3569 * Recognize and silence repeated error debug messages in buggy apps.
3571 const char *ErrorDebugFmtString
;
3572 GLuint ErrorDebugCount
;
3574 /* GL_ARB_debug_output */
3575 struct gl_debug_state Debug
;
3577 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3578 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3579 GLbitfield NewDriverState
;/**< bitwise-or of flags from DriverFlags */
3581 struct gl_driver_flags DriverFlags
;
3583 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3585 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3587 /** \name Derived state */
3588 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3589 GLfloat _EyeZDir
[3];
3590 GLfloat _ModelViewInvScale
;
3591 GLboolean _NeedEyeCoords
;
3592 GLboolean _ForceEyeCoords
;
3594 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3596 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3598 /** \name For debugging/development only */
3600 GLboolean FirstTimeCurrent
;
3603 /** software compression/decompression supported or not */
3604 GLboolean Mesa_DXTn
;
3606 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3608 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
3611 * \name Hooks for module contexts.
3613 * These will eventually live in the driver or elsewhere.
3616 void *swrast_context
;
3617 void *swsetup_context
;
3618 void *swtnl_context
;
3620 struct st_context
*st
;
3627 extern int MESA_VERBOSE
;
3628 extern int MESA_DEBUG_FLAGS
;
3629 # define MESA_FUNCTION __FUNCTION__
3631 # define MESA_VERBOSE 0
3632 # define MESA_DEBUG_FLAGS 0
3633 # define MESA_FUNCTION "a function"
3640 /** The MESA_VERBOSE var is a bitmask of these flags */
3643 VERBOSE_VARRAY
= 0x0001,
3644 VERBOSE_TEXTURE
= 0x0002,
3645 VERBOSE_MATERIAL
= 0x0004,
3646 VERBOSE_PIPELINE
= 0x0008,
3647 VERBOSE_DRIVER
= 0x0010,
3648 VERBOSE_STATE
= 0x0020,
3649 VERBOSE_API
= 0x0040,
3650 VERBOSE_DISPLAY_LIST
= 0x0100,
3651 VERBOSE_LIGHTING
= 0x0200,
3652 VERBOSE_PRIMS
= 0x0400,
3653 VERBOSE_VERTS
= 0x0800,
3654 VERBOSE_DISASSEM
= 0x1000,
3655 VERBOSE_DRAW
= 0x2000,
3656 VERBOSE_SWAPBUFFERS
= 0x4000
3660 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3663 DEBUG_SILENT
= (1 << 0),
3664 DEBUG_ALWAYS_FLUSH
= (1 << 1),
3665 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
3666 DEBUG_INCOMPLETE_FBO
= (1 << 3)
3675 #endif /* MTYPES_H */