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))
276 * Determine if the given gl_varying_slot appears in the fragment shader.
278 static inline GLboolean
279 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
282 case VARYING_SLOT_PSIZ
:
283 case VARYING_SLOT_BFC0
:
284 case VARYING_SLOT_BFC1
:
285 case VARYING_SLOT_EDGE
:
286 case VARYING_SLOT_CLIP_VERTEX
:
287 case VARYING_SLOT_LAYER
:
296 * Fragment program results
300 FRAG_RESULT_DEPTH
= 0,
301 FRAG_RESULT_STENCIL
= 1,
302 /* If a single color should be written to all render targets, this
303 * register is written. No FRAG_RESULT_DATAn will be written.
305 FRAG_RESULT_COLOR
= 2,
307 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
308 * or ARB_fragment_program fragment.color[n]) color results. If
309 * any are written, FRAG_RESULT_COLOR will not be written.
311 FRAG_RESULT_DATA0
= 3,
312 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
317 * Indexes for all renderbuffers
321 /* the four standard color buffers */
329 /* optional aux buffer */
331 /* generic renderbuffers */
344 * Bit flags for all renderbuffers
346 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
347 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
348 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
349 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
350 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
351 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
352 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
353 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
354 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
355 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
356 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
357 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
358 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
359 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
360 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
361 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
362 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
363 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
364 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
367 * Mask of all the color buffer bits (but not accum).
369 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
370 BUFFER_BIT_BACK_LEFT | \
371 BUFFER_BIT_FRONT_RIGHT | \
372 BUFFER_BIT_BACK_RIGHT | \
374 BUFFER_BIT_COLOR0 | \
375 BUFFER_BIT_COLOR1 | \
376 BUFFER_BIT_COLOR2 | \
377 BUFFER_BIT_COLOR3 | \
378 BUFFER_BIT_COLOR4 | \
379 BUFFER_BIT_COLOR5 | \
380 BUFFER_BIT_COLOR6 | \
385 * Framebuffer configuration (aka visual / pixelformat)
386 * Note: some of these fields should be boolean, but it appears that
387 * code in drivers/dri/common/util.c requires int-sized fields.
393 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
394 GLuint doubleBufferMode
;
397 GLboolean haveAccumBuffer
;
398 GLboolean haveDepthBuffer
;
399 GLboolean haveStencilBuffer
;
401 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
402 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
403 GLint rgbBits
; /* total bits for rgb */
404 GLint indexBits
; /* total bits for colorindex */
406 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
414 /* EXT_visual_rating / GLX 1.2 */
417 /* EXT_visual_info / GLX 1.2 */
418 GLint transparentPixel
;
419 /* colors are floats scaled to ints */
420 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
421 GLint transparentIndex
;
423 /* ARB_multisample / SGIS_multisample */
427 /* SGIX_pbuffer / GLX 1.3 */
428 GLint maxPbufferWidth
;
429 GLint maxPbufferHeight
;
430 GLint maxPbufferPixels
;
431 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
432 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
434 /* OML_swap_method */
437 /* EXT_texture_from_pixmap */
438 GLint bindToTextureRgb
;
439 GLint bindToTextureRgba
;
440 GLint bindToMipmapTexture
;
441 GLint bindToTextureTargets
;
444 /* EXT_framebuffer_sRGB */
450 * \name Bit flags used for updating material values.
453 #define MAT_ATTRIB_FRONT_AMBIENT 0
454 #define MAT_ATTRIB_BACK_AMBIENT 1
455 #define MAT_ATTRIB_FRONT_DIFFUSE 2
456 #define MAT_ATTRIB_BACK_DIFFUSE 3
457 #define MAT_ATTRIB_FRONT_SPECULAR 4
458 #define MAT_ATTRIB_BACK_SPECULAR 5
459 #define MAT_ATTRIB_FRONT_EMISSION 6
460 #define MAT_ATTRIB_BACK_EMISSION 7
461 #define MAT_ATTRIB_FRONT_SHININESS 8
462 #define MAT_ATTRIB_BACK_SHININESS 9
463 #define MAT_ATTRIB_FRONT_INDEXES 10
464 #define MAT_ATTRIB_BACK_INDEXES 11
465 #define MAT_ATTRIB_MAX 12
467 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
468 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
469 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
470 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
471 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
472 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
474 #define MAT_INDEX_AMBIENT 0
475 #define MAT_INDEX_DIFFUSE 1
476 #define MAT_INDEX_SPECULAR 2
478 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
479 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
480 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
481 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
482 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
483 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
484 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
485 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
486 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
487 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
488 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
489 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
492 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
493 MAT_BIT_FRONT_AMBIENT | \
494 MAT_BIT_FRONT_DIFFUSE | \
495 MAT_BIT_FRONT_SPECULAR | \
496 MAT_BIT_FRONT_SHININESS | \
497 MAT_BIT_FRONT_INDEXES)
499 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
500 MAT_BIT_BACK_AMBIENT | \
501 MAT_BIT_BACK_DIFFUSE | \
502 MAT_BIT_BACK_SPECULAR | \
503 MAT_BIT_BACK_SHININESS | \
504 MAT_BIT_BACK_INDEXES)
506 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
515 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
523 #define LIGHT_SPOT 0x1
524 #define LIGHT_LOCAL_VIEWER 0x2
525 #define LIGHT_POSITIONAL 0x4
526 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
531 * Light source state.
535 struct gl_light
*next
; /**< double linked list with sentinel */
536 struct gl_light
*prev
;
538 GLfloat Ambient
[4]; /**< ambient color */
539 GLfloat Diffuse
[4]; /**< diffuse color */
540 GLfloat Specular
[4]; /**< specular color */
541 GLfloat EyePosition
[4]; /**< position in eye coordinates */
542 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
543 GLfloat SpotExponent
;
544 GLfloat SpotCutoff
; /**< in degrees */
545 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
546 GLfloat ConstantAttenuation
;
547 GLfloat LinearAttenuation
;
548 GLfloat QuadraticAttenuation
;
549 GLboolean Enabled
; /**< On/off flag */
552 * \name Derived fields
555 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
557 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
558 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
559 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
560 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
561 GLfloat _VP_inf_spot_attenuation
;
563 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
564 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
565 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
575 GLfloat Ambient
[4]; /**< ambient color */
576 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
577 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
578 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
579 * or GL_SEPARATE_SPECULAR_COLOR */
584 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
586 struct gl_accum_attrib
588 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
593 * Used for storing clear color, texture border color, etc.
594 * The float values are typically unclamped.
605 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
607 struct gl_colorbuffer_attrib
609 GLuint ClearIndex
; /**< Index for glClear */
610 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
611 GLuint IndexMask
; /**< Color index write mask */
612 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
614 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
617 * \name alpha testing
620 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
621 GLenum AlphaFunc
; /**< Alpha test function */
622 GLfloat AlphaRefUnclamped
;
623 GLclampf AlphaRef
; /**< Alpha reference value */
630 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
632 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
633 * control, only on the fixed-pointness of the render target.
634 * The query does however depend on fragment color clamping.
636 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
637 GLfloat BlendColor
[4]; /**< Blending color */
641 GLenum SrcRGB
; /**< RGB blend source term */
642 GLenum DstRGB
; /**< RGB blend dest term */
643 GLenum SrcA
; /**< Alpha blend source term */
644 GLenum DstA
; /**< Alpha blend dest term */
645 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
646 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
648 * Set if any blend factor uses SRC1. Computed at the time blend factors
651 GLboolean _UsesDualSrc
;
652 } Blend
[MAX_DRAW_BUFFERS
];
653 /** Are the blend func terms currently different for each buffer/target? */
654 GLboolean _BlendFuncPerBuffer
;
655 /** Are the blend equations currently different for each buffer/target? */
656 GLboolean _BlendEquationPerBuffer
;
663 GLenum LogicOp
; /**< Logic operator */
664 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
665 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
668 GLboolean DitherFlag
; /**< Dither enable flag */
670 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
671 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
672 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
674 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
679 * Current attribute group (GL_CURRENT_BIT).
681 struct gl_current_attrib
684 * \name Current vertex attributes.
685 * \note Values are valid only after FLUSH_VERTICES has been called.
686 * \note Index and Edgeflag current values are stored as floats in the
687 * SIX and SEVEN attribute slots.
689 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
692 * \name Current raster position attributes (always valid).
693 * \note This set of attributes is very similar to the SWvertex struct.
696 GLfloat RasterPos
[4];
697 GLfloat RasterDistance
;
698 GLfloat RasterColor
[4];
699 GLfloat RasterSecondaryColor
[4];
700 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
701 GLboolean RasterPosValid
;
707 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
709 struct gl_depthbuffer_attrib
711 GLenum Func
; /**< Function for depth buffer compare */
712 GLclampd Clear
; /**< Value to clear depth buffer to */
713 GLboolean Test
; /**< Depth buffering enabled flag */
714 GLboolean Mask
; /**< Depth buffer writable? */
715 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
716 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
721 * Evaluator attribute group (GL_EVAL_BIT).
723 struct gl_eval_attrib
729 GLboolean Map1Color4
;
731 GLboolean Map1Normal
;
732 GLboolean Map1TextureCoord1
;
733 GLboolean Map1TextureCoord2
;
734 GLboolean Map1TextureCoord3
;
735 GLboolean Map1TextureCoord4
;
736 GLboolean Map1Vertex3
;
737 GLboolean Map1Vertex4
;
738 GLboolean Map2Color4
;
740 GLboolean Map2Normal
;
741 GLboolean Map2TextureCoord1
;
742 GLboolean Map2TextureCoord2
;
743 GLboolean Map2TextureCoord3
;
744 GLboolean Map2TextureCoord4
;
745 GLboolean Map2Vertex3
;
746 GLboolean Map2Vertex4
;
747 GLboolean AutoNormal
;
751 * \name Map Grid endpoints and divisions and calculated du values
755 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
756 GLint MapGrid2un
, MapGrid2vn
;
757 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
758 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
764 * Fog attribute group (GL_FOG_BIT).
768 GLboolean Enabled
; /**< Fog enabled flag */
769 GLfloat ColorUnclamped
[4]; /**< Fog color */
770 GLfloat Color
[4]; /**< Fog color */
771 GLfloat Density
; /**< Density >= 0.0 */
772 GLfloat Start
; /**< Start distance in eye coords */
773 GLfloat End
; /**< End distance in eye coords */
774 GLfloat Index
; /**< Fog index */
775 GLenum Mode
; /**< Fog mode */
776 GLboolean ColorSumEnabled
;
777 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
778 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
779 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
784 * Hint attribute group (GL_HINT_BIT).
786 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
788 struct gl_hint_attrib
790 GLenum PerspectiveCorrection
;
793 GLenum PolygonSmooth
;
795 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
796 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
797 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
802 * Lighting attribute group (GL_LIGHT_BIT).
804 struct gl_light_attrib
806 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
807 struct gl_lightmodel Model
; /**< Lighting model */
810 * Front and back material values.
811 * Note: must call FLUSH_VERTICES() before using.
813 struct gl_material Material
;
815 GLboolean Enabled
; /**< Lighting enabled flag */
816 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
817 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
818 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
819 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
820 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
821 GLboolean ColorMaterialEnabled
;
822 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
823 GLboolean _ClampVertexColor
;
825 struct gl_light EnabledList
; /**< List sentinel */
828 * Derived state for optimizations:
831 GLboolean _NeedEyeCoords
;
832 GLboolean _NeedVertices
; /**< Use fast shader? */
833 GLfloat _BaseColor
[2][3];
839 * Line attribute group (GL_LINE_BIT).
841 struct gl_line_attrib
843 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
844 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
845 GLushort StipplePattern
; /**< Stipple pattern */
846 GLint StippleFactor
; /**< Stipple repeat factor */
847 GLfloat Width
; /**< Line width */
852 * Display list attribute group (GL_LIST_BIT).
854 struct gl_list_attrib
861 * Multisample attribute group (GL_MULTISAMPLE_BIT).
863 struct gl_multisample_attrib
866 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
867 GLboolean SampleAlphaToCoverage
;
868 GLboolean SampleAlphaToOne
;
869 GLboolean SampleCoverage
;
870 GLfloat SampleCoverageValue
;
871 GLboolean SampleCoverageInvert
;
873 /* ARB_texture_multisample / GL3.2 additions */
874 GLboolean SampleMask
;
875 /** The GL spec defines this as an array but >32x MSAA is madness */
876 GLbitfield SampleMaskValue
;
881 * A pixelmap (see glPixelMap)
886 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
891 * Collection of all pixelmaps
895 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
896 struct gl_pixelmap GtoG
;
897 struct gl_pixelmap BtoB
;
898 struct gl_pixelmap AtoA
;
899 struct gl_pixelmap ItoR
;
900 struct gl_pixelmap ItoG
;
901 struct gl_pixelmap ItoB
;
902 struct gl_pixelmap ItoA
;
903 struct gl_pixelmap ItoI
;
904 struct gl_pixelmap StoS
;
909 * Pixel attribute group (GL_PIXEL_MODE_BIT).
911 struct gl_pixel_attrib
913 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
915 /*--- Begin Pixel Transfer State ---*/
916 /* Fields are in the order in which they're applied... */
918 /** Scale & Bias (index shift, offset) */
920 GLfloat RedBias
, RedScale
;
921 GLfloat GreenBias
, GreenScale
;
922 GLfloat BlueBias
, BlueScale
;
923 GLfloat AlphaBias
, AlphaScale
;
924 GLfloat DepthBias
, DepthScale
;
925 GLint IndexShift
, IndexOffset
;
929 /* Note: actual pixel maps are not part of this attrib group */
930 GLboolean MapColorFlag
;
931 GLboolean MapStencilFlag
;
933 /*--- End Pixel Transfer State ---*/
936 GLfloat ZoomX
, ZoomY
;
941 * Point attribute group (GL_POINT_BIT).
943 struct gl_point_attrib
945 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
946 GLfloat Size
; /**< User-specified point size */
947 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
948 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
949 GLfloat Threshold
; /**< GL_EXT_point_parameters */
950 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
951 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
952 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
953 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
954 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
959 * Polygon attribute group (GL_POLYGON_BIT).
961 struct gl_polygon_attrib
963 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
964 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
965 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
966 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
967 GLboolean CullFlag
; /**< Culling on/off flag */
968 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
969 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
970 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
971 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
972 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
973 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
974 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
975 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
980 * Scissor attributes (GL_SCISSOR_BIT).
982 struct gl_scissor_attrib
984 GLboolean Enabled
; /**< Scissor test enabled? */
985 GLint X
, Y
; /**< Lower left corner of box */
986 GLsizei Width
, Height
; /**< Size of box */
991 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
993 * Three sets of stencil data are tracked so that OpenGL 2.0,
994 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
995 * simultaneously. In each of the stencil state arrays, element 0 corresponds
996 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
997 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
998 * GL_EXT_stencil_two_side GL_BACK state.
1000 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1001 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1003 * The derived value \c _TestTwoSide is set when the front-face and back-face
1004 * stencil state are different.
1006 struct gl_stencil_attrib
1008 GLboolean Enabled
; /**< Enabled flag */
1009 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1010 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1011 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1012 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1013 GLboolean _TestTwoSide
;
1014 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1015 GLenum Function
[3]; /**< Stencil function */
1016 GLenum FailFunc
[3]; /**< Fail function */
1017 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1018 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1019 GLint Ref
[3]; /**< Reference value */
1020 GLuint ValueMask
[3]; /**< Value mask */
1021 GLuint WriteMask
[3]; /**< Write mask */
1022 GLuint Clear
; /**< Clear value */
1027 * An index for each type of texture object. These correspond to the GL
1028 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1029 * Note: the order is from highest priority to lowest priority.
1033 TEXTURE_2D_MULTISAMPLE_INDEX
,
1034 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1035 TEXTURE_CUBE_ARRAY_INDEX
,
1036 TEXTURE_BUFFER_INDEX
,
1037 TEXTURE_2D_ARRAY_INDEX
,
1038 TEXTURE_1D_ARRAY_INDEX
,
1039 TEXTURE_EXTERNAL_INDEX
,
1050 * Bit flags for each type of texture object
1051 * Used for Texture.Unit[]._ReallyEnabled flags.
1054 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1055 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1056 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1057 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1058 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1059 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1060 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1061 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1062 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1063 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1064 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1065 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1070 * Texture image state. Drivers will typically create a subclass of this
1071 * with extra fields for memory buffers, etc.
1073 struct gl_texture_image
1075 GLint InternalFormat
; /**< Internal format as given by the user */
1076 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1077 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1078 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1079 * GL_DEPTH_STENCIL_EXT only. Used for
1080 * choosing TexEnv arithmetic.
1082 gl_format TexFormat
; /**< The actual texture memory format */
1084 GLuint Border
; /**< 0 or 1 */
1085 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1086 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1087 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1088 GLuint Width2
; /**< = Width - 2*Border */
1089 GLuint Height2
; /**< = Height - 2*Border */
1090 GLuint Depth2
; /**< = Depth - 2*Border */
1091 GLuint WidthLog2
; /**< = log2(Width2) */
1092 GLuint HeightLog2
; /**< = log2(Height2) */
1093 GLuint DepthLog2
; /**< = log2(Depth2) */
1094 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1095 levels, computed from the dimensions */
1097 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1098 GLuint Level
; /**< Which mipmap level am I? */
1099 /** Cube map face: index into gl_texture_object::Image[] array */
1102 /** GL_ARB_texture_multisample */
1103 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1104 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1109 * Indexes for cube map faces.
1124 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1125 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1127 struct gl_sampler_object
1132 GLenum WrapS
; /**< S-axis texture image wrap mode */
1133 GLenum WrapT
; /**< T-axis texture image wrap mode */
1134 GLenum WrapR
; /**< R-axis texture image wrap mode */
1135 GLenum MinFilter
; /**< minification filter */
1136 GLenum MagFilter
; /**< magnification filter */
1137 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1138 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1139 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1140 GLfloat LodBias
; /**< OpenGL 1.4 */
1141 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1142 GLenum CompareMode
; /**< GL_ARB_shadow */
1143 GLenum CompareFunc
; /**< GL_ARB_shadow */
1144 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1145 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1150 * Texture object state. Contains the array of mipmap images, border color,
1151 * wrap modes, filter modes, and shadow/texcompare state.
1153 struct gl_texture_object
1155 _glthread_Mutex Mutex
; /**< for thread safety */
1156 GLint RefCount
; /**< reference count */
1157 GLuint Name
; /**< the user-visible texture object ID */
1158 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1160 struct gl_sampler_object Sampler
;
1162 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1164 GLfloat Priority
; /**< in [0,1] */
1165 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1166 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1167 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1168 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1169 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1170 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1171 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1172 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1173 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1174 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1175 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1176 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1177 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1178 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1180 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1182 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1183 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1185 /** GL_ARB_texture_buffer_object */
1186 struct gl_buffer_object
*BufferObject
;
1187 GLenum BufferObjectFormat
;
1188 /** Equivalent Mesa format for BufferObjectFormat. */
1189 gl_format _BufferObjectFormat
;
1190 /** GL_ARB_texture_buffer_range */
1191 GLintptr BufferOffset
;
1192 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1194 /** GL_OES_EGL_image_external */
1195 GLint RequiredTextureImageUnits
;
1199 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1200 #define MAX_COMBINER_TERMS 4
1204 * Texture combine environment state.
1206 struct gl_tex_env_combine_state
1208 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1209 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1210 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1211 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1212 GLenum SourceA
[MAX_COMBINER_TERMS
];
1213 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1214 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1215 GLenum OperandA
[MAX_COMBINER_TERMS
];
1216 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1217 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1218 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1219 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1224 * TexGenEnabled flags.
1231 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1236 * Bit flag versions of the corresponding GL_ constants.
1239 #define TEXGEN_SPHERE_MAP 0x1
1240 #define TEXGEN_OBJ_LINEAR 0x2
1241 #define TEXGEN_EYE_LINEAR 0x4
1242 #define TEXGEN_REFLECTION_MAP_NV 0x8
1243 #define TEXGEN_NORMAL_MAP_NV 0x10
1245 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1246 TEXGEN_REFLECTION_MAP_NV | \
1247 TEXGEN_NORMAL_MAP_NV)
1248 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1249 TEXGEN_REFLECTION_MAP_NV | \
1250 TEXGEN_NORMAL_MAP_NV | \
1256 /** Tex-gen enabled for texture unit? */
1257 #define ENABLE_TEXGEN(unit) (1 << (unit))
1259 /** Non-identity texture matrix for texture unit? */
1260 #define ENABLE_TEXMAT(unit) (1 << (unit))
1264 * Texture coord generation state.
1268 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1269 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1270 GLfloat ObjectPlane
[4];
1271 GLfloat EyePlane
[4];
1276 * Texture unit state. Contains enable flags, texture environment/function/
1277 * combiners, texgen state, and pointers to current texture objects.
1279 struct gl_texture_unit
1281 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1282 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1284 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1285 GLclampf EnvColor
[4];
1286 GLfloat EnvColorUnclamped
[4];
1288 struct gl_texgen GenS
;
1289 struct gl_texgen GenT
;
1290 struct gl_texgen GenR
;
1291 struct gl_texgen GenQ
;
1292 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1293 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1295 GLfloat LodBias
; /**< for biasing mipmap levels */
1297 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1299 /** Current sampler object (GL_ARB_sampler_objects) */
1300 struct gl_sampler_object
*Sampler
;
1303 * \name GL_EXT_texture_env_combine
1305 struct gl_tex_env_combine_state Combine
;
1308 * Derived state based on \c EnvMode and the \c BaseFormat of the
1309 * currently enabled texture.
1311 struct gl_tex_env_combine_state _EnvMode
;
1314 * Currently enabled combiner state. This will point to either
1315 * \c Combine or \c _EnvMode.
1317 struct gl_tex_env_combine_state
*_CurrentCombine
;
1319 /** Current texture object pointers */
1320 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1322 /** Points to highest priority, complete and enabled texture object */
1323 struct gl_texture_object
*_Current
;
1328 * Texture attribute group (GL_TEXTURE_BIT).
1330 struct gl_texture_attrib
1332 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1333 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1335 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1337 /** GL_ARB_texture_buffer_object */
1338 struct gl_buffer_object
*BufferObject
;
1340 /** GL_ARB_seamless_cubemap */
1341 GLboolean CubeMapSeamless
;
1343 /** Texture units/samplers used by vertex or fragment texturing */
1344 GLbitfield _EnabledUnits
;
1346 /** Texture coord units/sets used for fragment texturing */
1347 GLbitfield _EnabledCoordUnits
;
1349 /** Texture coord units that have texgen enabled */
1350 GLbitfield _TexGenEnabled
;
1352 /** Texture coord units that have non-identity matrices */
1353 GLbitfield _TexMatEnabled
;
1355 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1356 GLbitfield _GenFlags
;
1361 * Data structure representing a single clip plane (e.g. one of the elements
1362 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1364 typedef GLfloat gl_clip_plane
[4];
1368 * Transformation attribute group (GL_TRANSFORM_BIT).
1370 struct gl_transform_attrib
1372 GLenum MatrixMode
; /**< Matrix mode */
1373 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1374 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1375 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1376 GLboolean Normalize
; /**< Normalize all normals? */
1377 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1378 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1379 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1381 GLfloat CullEyePos
[4];
1382 GLfloat CullObjPos
[4];
1387 * Viewport attribute group (GL_VIEWPORT_BIT).
1389 struct gl_viewport_attrib
1391 GLint X
, Y
; /**< position */
1392 GLsizei Width
, Height
; /**< size */
1393 GLfloat Near
, Far
; /**< Depth buffer range */
1394 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1399 * GL_ARB_vertex/pixel_buffer_object buffer object
1401 struct gl_buffer_object
1403 _glthread_Mutex Mutex
;
1406 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1407 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1408 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1409 /** Fields describing a mapped buffer */
1411 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1412 GLvoid
*Pointer
; /**< User-space address of mapping */
1413 GLintptr Offset
; /**< Mapped offset */
1414 GLsizeiptr Length
; /**< Mapped length */
1416 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1417 GLboolean Written
; /**< Ever written to? (for debugging) */
1418 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1423 * Client pixel packing/unpacking attributes
1425 struct gl_pixelstore_attrib
1433 GLboolean SwapBytes
;
1435 GLboolean Invert
; /**< GL_MESA_pack_invert */
1436 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1441 * Client vertex array attributes
1443 struct gl_client_array
1445 GLint Size
; /**< components per element (1,2,3,4) */
1446 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1447 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1448 GLsizei Stride
; /**< user-specified stride */
1449 GLsizei StrideB
; /**< actual stride in bytes */
1450 const GLubyte
*Ptr
; /**< Points to array data */
1451 GLboolean Enabled
; /**< Enabled flag is a boolean */
1452 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1453 GLboolean Integer
; /**< Integer-valued? */
1454 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1455 GLuint _ElementSize
; /**< size of each element in bytes */
1457 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1458 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1463 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1464 * extension, but a nice encapsulation in any case.
1466 struct gl_array_object
1468 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1472 _glthread_Mutex Mutex
;
1475 * Does the VAO use ARB semantics or Apple semantics?
1477 * There are several ways in which ARB_vertex_array_object and
1478 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1481 * - ARB VAOs require that all array data be sourced from vertex buffer
1482 * objects, but Apple VAOs do not.
1484 * - ARB VAOs require that names come from GenVertexArrays.
1486 * This flag notes which behavior governs this VAO.
1488 GLboolean ARBsemantics
;
1491 * Has this array object been bound?
1493 GLboolean EverBound
;
1495 /** Vertex attribute arrays */
1496 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1498 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1499 GLbitfield64 _Enabled
;
1502 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1503 * we can determine the max legal (in bounds) glDrawElements array index.
1507 struct gl_buffer_object
*ElementArrayBufferObj
;
1512 * Vertex array state
1514 struct gl_array_attrib
1516 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1517 struct gl_array_object
*ArrayObj
;
1519 /** The default vertex array object */
1520 struct gl_array_object
*DefaultArrayObj
;
1522 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1523 struct _mesa_HashTable
*Objects
;
1525 GLint ActiveTexture
; /**< Client Active Texture */
1526 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1527 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1530 * \name Primitive restart controls
1532 * Primitive restart is enabled if either \c PrimitiveRestart or
1533 * \c PrimitiveRestartFixedIndex is set.
1536 GLboolean PrimitiveRestart
;
1537 GLboolean PrimitiveRestartFixedIndex
;
1538 GLboolean _PrimitiveRestart
;
1539 GLuint RestartIndex
;
1542 /* GL_ARB_vertex_buffer_object */
1543 struct gl_buffer_object
*ArrayBufferObj
;
1546 * Vertex arrays as consumed by a driver.
1547 * The array pointer is set up only by the VBO module.
1549 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1554 * Feedback buffer state
1559 GLbitfield _Mask
; /**< FB_* bits */
1567 * Selection buffer state
1571 GLuint
*Buffer
; /**< selection buffer */
1572 GLuint BufferSize
; /**< size of the selection buffer */
1573 GLuint BufferCount
; /**< number of values in the selection buffer */
1574 GLuint Hits
; /**< number of records in the selection buffer */
1575 GLuint NameStackDepth
; /**< name stack depth */
1576 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1577 GLboolean HitFlag
; /**< hit flag */
1578 GLfloat HitMinZ
; /**< minimum hit depth */
1579 GLfloat HitMaxZ
; /**< maximum hit depth */
1584 * 1-D Evaluator control points
1588 GLuint Order
; /**< Number of control points */
1589 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1590 GLfloat
*Points
; /**< Points to contiguous control points */
1595 * 2-D Evaluator control points
1599 GLuint Uorder
; /**< Number of control points in U dimension */
1600 GLuint Vorder
; /**< Number of control points in V dimension */
1603 GLfloat
*Points
; /**< Points to contiguous control points */
1608 * All evaluator control point state
1610 struct gl_evaluators
1616 struct gl_1d_map Map1Vertex3
;
1617 struct gl_1d_map Map1Vertex4
;
1618 struct gl_1d_map Map1Index
;
1619 struct gl_1d_map Map1Color4
;
1620 struct gl_1d_map Map1Normal
;
1621 struct gl_1d_map Map1Texture1
;
1622 struct gl_1d_map Map1Texture2
;
1623 struct gl_1d_map Map1Texture3
;
1624 struct gl_1d_map Map1Texture4
;
1631 struct gl_2d_map Map2Vertex3
;
1632 struct gl_2d_map Map2Vertex4
;
1633 struct gl_2d_map Map2Index
;
1634 struct gl_2d_map Map2Color4
;
1635 struct gl_2d_map Map2Normal
;
1636 struct gl_2d_map Map2Texture1
;
1637 struct gl_2d_map Map2Texture2
;
1638 struct gl_2d_map Map2Texture3
;
1639 struct gl_2d_map Map2Texture4
;
1644 struct gl_transform_feedback_varying_info
1653 * Per-output info vertex shaders for transform feedback.
1655 struct gl_transform_feedback_output
1657 unsigned OutputRegister
;
1658 unsigned OutputBuffer
;
1659 unsigned NumComponents
;
1661 /** offset (in DWORDs) of this output within the interleaved structure */
1665 * Offset into the output register of the data to output. For example,
1666 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1667 * offset is in the y and z components of the output register.
1669 unsigned ComponentOffset
;
1673 /** Post-link transform feedback info. */
1674 struct gl_transform_feedback_info
1676 unsigned NumOutputs
;
1679 * Number of transform feedback buffers in use by this program.
1681 unsigned NumBuffers
;
1683 struct gl_transform_feedback_output
*Outputs
;
1685 /** Transform feedback varyings used for the linking of this shader program.
1687 * Use for glGetTransformFeedbackVarying().
1689 struct gl_transform_feedback_varying_info
*Varyings
;
1693 * Total number of components stored in each buffer. This may be used by
1694 * hardware back-ends to determine the correct stride when interleaving
1695 * multiple transform feedback outputs in the same buffer.
1697 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1702 * Transform feedback object state
1704 struct gl_transform_feedback_object
1706 GLuint Name
; /**< AKA the object ID */
1708 GLboolean Active
; /**< Is transform feedback enabled? */
1709 GLboolean Paused
; /**< Is transform feedback paused? */
1710 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1712 GLboolean EverBound
; /**< Has this object been bound? */
1715 * GLES: if Active is true, remaining number of primitives which can be
1716 * rendered without overflow. This is necessary to track because GLES
1717 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1718 * glDrawArraysInstanced would overflow transform feedback buffers.
1719 * Undefined if Active is false.
1721 * Not tracked for desktop GL since it's unnecessary.
1723 unsigned GlesRemainingPrims
;
1725 /** The feedback buffers */
1726 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1727 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1729 /** Start of feedback data in dest buffer */
1730 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1733 * Max data to put into dest buffer (in bytes). Computed based on
1734 * RequestedSize and the actual size of the buffer.
1736 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1739 * Size that was specified when the buffer was bound. If the buffer was
1740 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1743 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1748 * Context state for transform feedback.
1750 struct gl_transform_feedback_state
1752 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1754 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1755 struct gl_buffer_object
*CurrentBuffer
;
1757 /** The table of all transform feedback objects */
1758 struct _mesa_HashTable
*Objects
;
1760 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1761 struct gl_transform_feedback_object
*CurrentObject
;
1763 /** The default xform-fb object (Name==0) */
1764 struct gl_transform_feedback_object
*DefaultObject
;
1769 * Names of the various vertex/fragment program register files, etc.
1771 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1772 * All values should fit in a 4-bit field.
1774 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR,
1775 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1776 * be "uniform" variables since they can only be set outside glBegin/End.
1777 * They're also all stored in the same Parameters array.
1781 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1782 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1783 PROGRAM_INPUT
, /**< machine->Inputs[] */
1784 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1785 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1786 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1787 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1788 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1789 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1790 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1791 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1792 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1793 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1794 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1800 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1801 * one of these values.
1805 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1806 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1807 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1808 SYSTEM_VALUE_MAX
/**< Number of values */
1813 * The possible interpolation qualifiers that can be applied to a fragment
1814 * shader input in GLSL.
1816 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1817 * gl_fragment_program data structure to 0 causes the default behavior.
1819 enum glsl_interp_qualifier
1821 INTERP_QUALIFIER_NONE
= 0,
1822 INTERP_QUALIFIER_SMOOTH
,
1823 INTERP_QUALIFIER_FLAT
,
1824 INTERP_QUALIFIER_NOPERSPECTIVE
,
1825 INTERP_QUALIFIER_COUNT
/**< Number of interpolation qualifiers */
1830 * \brief Layout qualifiers for gl_FragDepth.
1832 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
1833 * a layout qualifier.
1835 * \see enum ir_depth_layout
1837 enum gl_frag_depth_layout
1839 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
1840 FRAG_DEPTH_LAYOUT_ANY
,
1841 FRAG_DEPTH_LAYOUT_GREATER
,
1842 FRAG_DEPTH_LAYOUT_LESS
,
1843 FRAG_DEPTH_LAYOUT_UNCHANGED
1848 * Base class for any kind of program object
1853 GLubyte
*String
; /**< Null-terminated program text */
1855 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1856 GLenum Format
; /**< String encoding format */
1858 struct prog_instruction
*Instructions
;
1860 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1861 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1862 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1863 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1864 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1865 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1866 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1867 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1870 /** Named parameters, constants, etc. from program text */
1871 struct gl_program_parameter_list
*Parameters
;
1872 /** Numbered local parameters */
1873 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1875 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1876 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1878 /** Bitmask of which register files are read/written with indirect
1879 * addressing. Mask of (1 << PROGRAM_x) bits.
1881 GLbitfield IndirectRegisterFiles
;
1883 /** Logical counts */
1885 GLuint NumInstructions
;
1886 GLuint NumTemporaries
;
1887 GLuint NumParameters
;
1888 GLuint NumAttributes
;
1889 GLuint NumAddressRegs
;
1890 GLuint NumAluInstructions
;
1891 GLuint NumTexInstructions
;
1892 GLuint NumTexIndirections
;
1894 /** Native, actual h/w counts */
1896 GLuint NumNativeInstructions
;
1897 GLuint NumNativeTemporaries
;
1898 GLuint NumNativeParameters
;
1899 GLuint NumNativeAttributes
;
1900 GLuint NumNativeAddressRegs
;
1901 GLuint NumNativeAluInstructions
;
1902 GLuint NumNativeTexInstructions
;
1903 GLuint NumNativeTexIndirections
;
1908 /** Vertex program object */
1909 struct gl_vertex_program
1911 struct gl_program Base
; /**< base class */
1912 GLboolean IsPositionInvariant
;
1913 GLboolean UsesClipDistance
;
1917 /** Geometry program object */
1918 struct gl_geometry_program
1920 struct gl_program Base
; /**< base class */
1924 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1925 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1926 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1930 /** Fragment program object */
1931 struct gl_fragment_program
1933 struct gl_program Base
; /**< base class */
1934 GLboolean UsesKill
; /**< shader uses KIL instruction */
1935 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
1936 GLboolean OriginUpperLeft
;
1937 GLboolean PixelCenterInteger
;
1938 enum gl_frag_depth_layout FragDepthLayout
;
1941 * GLSL interpolation qualifier associated with each fragment shader input.
1942 * For inputs that do not have an interpolation qualifier specified in
1943 * GLSL, the value is INTERP_QUALIFIER_NONE.
1945 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
1948 * Bitfield indicating, for each fragment shader input, 1 if that input
1949 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
1951 GLbitfield64 IsCentroid
;
1956 * State common to vertex and fragment programs.
1958 struct gl_program_state
1960 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1961 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1966 * Context state for vertex programs.
1968 struct gl_vertex_program_state
1970 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1971 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1972 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1973 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1974 /** Computed two sided lighting for fixed function/programs. */
1975 GLboolean _TwoSideEnabled
;
1976 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1978 /** Currently enabled and valid vertex program (including internal
1979 * programs, user-defined vertex programs and GLSL vertex shaders).
1980 * This is the program we must use when rendering.
1982 struct gl_vertex_program
*_Current
;
1984 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1986 /** Should fixed-function T&L be implemented with a vertex prog? */
1987 GLboolean _MaintainTnlProgram
;
1989 /** Program to emulate fixed-function T&L (see above) */
1990 struct gl_vertex_program
*_TnlProgram
;
1992 /** Cache of fixed-function programs */
1993 struct gl_program_cache
*Cache
;
1995 GLboolean _Overriden
;
2000 * Context state for geometry programs.
2002 struct gl_geometry_program_state
2004 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2005 GLboolean _Enabled
; /**< Enabled and valid program? */
2006 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2008 /** Currently enabled and valid program (including internal programs
2009 * and compiled shader programs).
2011 struct gl_geometry_program
*_Current
;
2013 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2015 /** Cache of fixed-function programs */
2016 struct gl_program_cache
*Cache
;
2020 * Context state for fragment programs.
2022 struct gl_fragment_program_state
2024 GLboolean Enabled
; /**< User-set fragment program enable flag */
2025 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2026 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2028 /** Currently enabled and valid fragment program (including internal
2029 * programs, user-defined fragment programs and GLSL fragment shaders).
2030 * This is the program we must use when rendering.
2032 struct gl_fragment_program
*_Current
;
2034 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2036 /** Should fixed-function texturing be implemented with a fragment prog? */
2037 GLboolean _MaintainTexEnvProgram
;
2039 /** Program to emulate fixed-function texture env/combine (see above) */
2040 struct gl_fragment_program
*_TexEnvProgram
;
2042 /** Cache of fixed-function programs */
2043 struct gl_program_cache
*Cache
;
2048 * ATI_fragment_shader runtime state
2050 #define ATI_FS_INPUT_PRIMARY 0
2051 #define ATI_FS_INPUT_SECONDARY 1
2053 struct atifs_instruction
;
2054 struct atifs_setupinst
;
2057 * ATI fragment shader
2059 struct ati_fragment_shader
2063 struct atifs_instruction
*Instructions
[2];
2064 struct atifs_setupinst
*SetupInst
[2];
2065 GLfloat Constants
[8][4];
2066 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2067 GLubyte numArithInstr
[2];
2068 GLubyte regsAssigned
[2];
2069 GLubyte NumPasses
; /**< 1 or 2 */
2071 GLubyte last_optype
;
2072 GLboolean interpinp1
;
2078 * Context state for GL_ATI_fragment_shader
2080 struct gl_ati_fragment_shader_state
2083 GLboolean _Enabled
; /**< enabled and valid shader? */
2084 GLboolean Compiling
;
2085 GLfloat GlobalConstants
[8][4];
2086 struct ati_fragment_shader
*Current
;
2090 /** Set by #pragma directives */
2091 struct gl_sl_pragmas
2093 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2094 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2095 GLboolean Optimize
; /**< defaults on */
2096 GLboolean Debug
; /**< defaults off */
2101 * A GLSL vertex or fragment shader object.
2105 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2106 * Must be the first field.
2109 GLuint Name
; /**< AKA the handle */
2110 GLint RefCount
; /**< Reference count */
2111 GLboolean DeletePending
;
2112 GLboolean CompileStatus
;
2113 const GLchar
*Source
; /**< Source code string */
2114 GLuint SourceChecksum
; /**< for debug/logging purposes */
2115 struct gl_program
*Program
; /**< Post-compile assembly code */
2117 struct gl_sl_pragmas Pragmas
;
2119 unsigned Version
; /**< GLSL version used for linking */
2120 GLboolean IsES
; /**< True if this shader uses GLSL ES */
2123 * \name Sampler tracking
2125 * \note Each of these fields is only set post-linking.
2128 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2129 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2130 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2134 * Map from sampler unit to texture unit (set by glUniform1i())
2136 * A sampler unit is associated with each sampler uniform by the linker.
2137 * The sampler unit associated with each uniform is stored in the
2138 * \c gl_uniform_storage::sampler field.
2140 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2141 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2142 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2145 * Number of default uniform block components used by this shader.
2147 * This field is only set post-linking.
2149 unsigned num_uniform_components
;
2152 * Number of combined uniform components used by this shader.
2154 * This field is only set post-linking. It is the sum of the uniform block
2155 * sizes divided by sizeof(float), and num_uniform_compoennts.
2157 unsigned num_combined_uniform_components
;
2160 * This shader's uniform block information.
2162 * The offsets of the variables are assigned only for shaders in a program's
2165 struct gl_uniform_block
*UniformBlocks
;
2166 unsigned NumUniformBlocks
;
2168 struct exec_list
*ir
;
2169 struct glsl_symbol_table
*symbols
;
2171 /** Shaders containing built-in functions that are used for linking. */
2172 struct gl_shader
*builtins_to_link
[16];
2173 unsigned num_builtins_to_link
;
2178 * Shader stages. Note that these will become 5 with tessellation.
2180 * The order must match how shaders are ordered in the pipeline.
2181 * The GLSL linker assumes that if i<j, then the j-th shader is
2182 * executed later than the i-th shader.
2186 MESA_SHADER_VERTEX
= 0,
2187 MESA_SHADER_GEOMETRY
= 1,
2188 MESA_SHADER_FRAGMENT
= 2,
2189 MESA_SHADER_TYPES
= 3
2193 struct gl_uniform_buffer_variable
2198 * Name of the uniform as seen by glGetUniformIndices.
2200 * glGetUniformIndices requires that the block instance index \b not be
2201 * present in the name of queried uniforms.
2204 * \c gl_uniform_buffer_variable::IndexName and
2205 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2209 const struct glsl_type
*Type
;
2210 unsigned int Offset
;
2215 enum gl_uniform_block_packing
2223 struct gl_uniform_block
2225 /** Declared name of the uniform block */
2228 /** Array of supplemental information about UBO ir_variables. */
2229 struct gl_uniform_buffer_variable
*Uniforms
;
2233 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2234 * with glBindBufferBase to bind a buffer object to this uniform block. When
2235 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2240 * Minimum size of a buffer object to back this uniform buffer
2241 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2243 GLuint UniformBufferSize
;
2246 * Layout specified in the shader
2248 * This isn't accessible through the API, but it is used while
2249 * cross-validating uniform blocks.
2251 enum gl_uniform_block_packing _Packing
;
2256 * A GLSL program object.
2257 * Basically a linked collection of vertex and fragment shaders.
2259 struct gl_shader_program
2261 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2262 GLuint Name
; /**< aka handle or ID */
2263 GLint RefCount
; /**< Reference count */
2264 GLboolean DeletePending
;
2267 * Is the application intending to glGetProgramBinary this program?
2269 GLboolean BinaryRetreivableHint
;
2272 * Flags that the linker should not reject the program if it lacks
2273 * a vertex or fragment shader. GLES2 doesn't allow separate
2274 * shader objects, and would reject them. However, we internally
2275 * build separate shader objects for fixed function programs, which
2276 * we use for drivers/common/meta.c and for handling
2277 * _mesa_update_state with no program bound (for example in
2280 GLboolean InternalSeparateShader
;
2282 GLuint NumShaders
; /**< number of attached shaders */
2283 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2286 * User-defined attribute bindings
2288 * These are set via \c glBindAttribLocation and are used to direct the
2289 * GLSL linker. These are \b not the values used in the compiled shader,
2290 * and they are \b not the values returned by \c glGetAttribLocation.
2292 struct string_to_uint_map
*AttributeBindings
;
2295 * User-defined fragment data bindings
2297 * These are set via \c glBindFragDataLocation and are used to direct the
2298 * GLSL linker. These are \b not the values used in the compiled shader,
2299 * and they are \b not the values returned by \c glGetFragDataLocation.
2301 struct string_to_uint_map
*FragDataBindings
;
2302 struct string_to_uint_map
*FragDataIndexBindings
;
2305 * Transform feedback varyings last specified by
2306 * glTransformFeedbackVaryings().
2308 * For the current set of transform feeedback varyings used for transform
2309 * feedback output, see LinkedTransformFeedback.
2314 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2315 } TransformFeedback
;
2317 /** Post-link transform feedback info. */
2318 struct gl_transform_feedback_info LinkedTransformFeedback
;
2320 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2321 enum gl_frag_depth_layout FragDepthLayout
;
2324 * Geometry shader state - copied into gl_geometry_program by
2325 * _mesa_copy_linked_program_data().
2330 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2331 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2332 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2335 /** Vertex shader state */
2338 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2339 * by _mesa_copy_linked_program_data().
2341 GLboolean UsesClipDistance
;
2342 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2343 0 if not present. */
2346 /* post-link info: */
2347 unsigned NumUserUniformStorage
;
2348 struct gl_uniform_storage
*UniformStorage
;
2350 struct gl_uniform_block
*UniformBlocks
;
2351 unsigned NumUniformBlocks
;
2354 * Scale factor for the uniform base location
2356 * This is used to generate locations (returned by \c glGetUniformLocation)
2357 * of uniforms. The base location of the uniform is multiplied by this
2358 * value, and the array index is added.
2364 * _mesa_uniform_merge_location_offset, _mesa_uniform_split_location_offset
2366 unsigned UniformLocationBaseScale
;
2369 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2370 * they're used in, or -1.
2372 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2373 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2375 int *UniformBlockStageIndex
[MESA_SHADER_TYPES
];
2378 * Map of active uniform names to locations
2380 * Maps any active uniform that is not an array element to a location.
2381 * Each active uniform, including individual structure members will appear
2382 * in this map. This roughly corresponds to the set of names that would be
2383 * enumerated by \c glGetActiveUniform.
2385 struct string_to_uint_map
*UniformHash
;
2387 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2388 GLboolean Validated
;
2389 GLboolean _Used
; /**< Ever used for drawing? */
2392 unsigned Version
; /**< GLSL version used for linking */
2393 GLboolean IsES
; /**< True if this program uses GLSL ES */
2396 * Per-stage shaders resulting from the first stage of linking.
2398 * Set of linked shaders for this program. The array is accessed using the
2399 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2402 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2406 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2407 #define GLSL_LOG 0x2 /**< Write shaders to files */
2408 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2409 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2410 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2411 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2412 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2413 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2414 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2415 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2419 * Context state for GLSL vertex/fragment shaders.
2421 struct gl_shader_state
2424 * Programs used for rendering
2426 * There is a separate program set for each shader stage. If
2427 * GL_EXT_separate_shader_objects is not supported, each of these must point
2428 * to \c NULL or to the same program.
2430 struct gl_shader_program
*CurrentVertexProgram
;
2431 struct gl_shader_program
*CurrentGeometryProgram
;
2432 struct gl_shader_program
*CurrentFragmentProgram
;
2434 struct gl_shader_program
*_CurrentFragmentProgram
;
2437 * Program used by glUniform calls.
2439 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2441 struct gl_shader_program
*ActiveProgram
;
2443 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2448 * Compiler options for a single GLSL shaders type
2450 struct gl_shader_compiler_options
2452 /** Driver-selectable options: */
2453 GLboolean EmitCondCodes
; /**< Use condition codes? */
2454 GLboolean EmitNoLoops
;
2455 GLboolean EmitNoFunctions
;
2456 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2457 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2458 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2459 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2460 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2463 * \name Forms of indirect addressing the driver cannot do.
2466 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2467 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2468 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2469 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2472 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2473 GLuint MaxUnrollIterations
;
2476 * Prefer DP4 instructions (rather than MUL/MAD) for matrix * vector
2477 * operations, such as position transformation.
2479 GLboolean PreferDP4
;
2481 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2486 * Occlusion/timer query object.
2488 struct gl_query_object
2490 GLenum Target
; /**< The query target, when active */
2491 GLuint Id
; /**< hash table ID/name */
2492 GLuint64EXT Result
; /**< the counter */
2493 GLboolean Active
; /**< inside Begin/EndQuery */
2494 GLboolean Ready
; /**< result is ready? */
2495 GLboolean EverBound
;/**< has query object ever been bound */
2500 * Context state for query objects.
2502 struct gl_query_state
2504 struct _mesa_HashTable
*QueryObjects
;
2505 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2506 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2508 /** GL_NV_conditional_render */
2509 struct gl_query_object
*CondRenderQuery
;
2511 /** GL_EXT_transform_feedback */
2512 struct gl_query_object
*PrimitivesGenerated
;
2513 struct gl_query_object
*PrimitivesWritten
;
2515 /** GL_ARB_timer_query */
2516 struct gl_query_object
*TimeElapsed
;
2518 GLenum CondRenderMode
;
2522 /** Sync object state */
2523 struct gl_sync_object
2525 GLenum Type
; /**< GL_SYNC_FENCE */
2526 GLuint Name
; /**< Fence name */
2527 GLint RefCount
; /**< Reference count */
2528 GLboolean DeletePending
; /**< Object was deleted while there were still
2529 * live references (e.g., sync not yet finished)
2531 GLenum SyncCondition
;
2532 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2533 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2538 * State which can be shared by multiple contexts:
2540 struct gl_shared_state
2542 _glthread_Mutex Mutex
; /**< for thread safety */
2543 GLint RefCount
; /**< Reference count */
2544 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2545 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2547 /** Default texture objects (shared by all texture units) */
2548 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2550 /** Fallback texture used when a bound texture is incomplete */
2551 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2554 * \name Thread safety and statechange notification for texture
2557 * \todo Improve the granularity of locking.
2560 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2561 GLuint TextureStateStamp
; /**< state notification for shared tex */
2564 /** Default buffer object for vertex arrays that aren't in VBOs */
2565 struct gl_buffer_object
*NullBufferObj
;
2568 * \name Vertex/geometry/fragment programs
2571 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2572 struct gl_vertex_program
*DefaultVertexProgram
;
2573 struct gl_fragment_program
*DefaultFragmentProgram
;
2574 struct gl_geometry_program
*DefaultGeometryProgram
;
2577 /* GL_ATI_fragment_shader */
2578 struct _mesa_HashTable
*ATIShaders
;
2579 struct ati_fragment_shader
*DefaultFragmentShader
;
2581 struct _mesa_HashTable
*BufferObjects
;
2583 /** Table of both gl_shader and gl_shader_program objects */
2584 struct _mesa_HashTable
*ShaderObjects
;
2586 /* GL_EXT_framebuffer_object */
2587 struct _mesa_HashTable
*RenderBuffers
;
2588 struct _mesa_HashTable
*FrameBuffers
;
2591 struct set
*SyncObjects
;
2593 /** GL_ARB_sampler_objects */
2594 struct _mesa_HashTable
*SamplerObjects
;
2600 * Renderbuffers represent drawing surfaces such as color, depth and/or
2601 * stencil. A framebuffer object has a set of renderbuffers.
2602 * Drivers will typically derive subclasses of this type.
2604 struct gl_renderbuffer
2606 _glthread_Mutex Mutex
; /**< for thread safety */
2607 GLuint ClassID
; /**< Useful for drivers */
2610 GLuint Width
, Height
;
2612 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2613 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2615 * True for renderbuffers that wrap textures, giving the driver a chance to
2616 * flush render caches through the FinishRenderTexture hook.
2618 * Drivers may also set this on renderbuffers other than those generated by
2619 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2620 * called without a rb->TexImage.
2622 GLboolean NeedsFinishRenderTexture
;
2624 GLenum InternalFormat
; /**< The user-specified format */
2625 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2626 GL_STENCIL_INDEX. */
2627 gl_format Format
; /**< The actual renderbuffer memory format */
2629 * Pointer to the texture image if this renderbuffer wraps a texture,
2632 * Note that the reference on the gl_texture_object containing this
2633 * TexImage is held by the gl_renderbuffer_attachment.
2635 struct gl_texture_image
*TexImage
;
2637 /** Delete this renderbuffer */
2638 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
2640 /** Allocate new storage for this renderbuffer */
2641 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
2642 struct gl_renderbuffer
*rb
,
2643 GLenum internalFormat
,
2644 GLuint width
, GLuint height
);
2649 * A renderbuffer attachment points to either a texture object (and specifies
2650 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2652 struct gl_renderbuffer_attachment
2654 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2658 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2659 * application supplied renderbuffer object.
2661 struct gl_renderbuffer
*Renderbuffer
;
2664 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2665 * supplied texture object.
2667 struct gl_texture_object
*Texture
;
2668 GLuint TextureLevel
; /**< Attached mipmap level. */
2669 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2670 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2671 * and 2D array textures */
2677 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2678 * In C++ terms, think of this as a base class from which device drivers
2679 * will make derived classes.
2681 struct gl_framebuffer
2683 _glthread_Mutex Mutex
; /**< for thread safety */
2685 * If zero, this is a window system framebuffer. If non-zero, this
2686 * is a FBO framebuffer; note that for some devices (i.e. those with
2687 * a natural pixel coordinate system for FBOs that differs from the
2688 * OpenGL/Mesa coordinate system), this means that the viewport,
2689 * polygon face orientation, and polygon stipple will have to be inverted.
2694 GLboolean DeletePending
;
2697 * The framebuffer's visual. Immutable if this is a window system buffer.
2698 * Computed from attachments if user-made FBO.
2700 struct gl_config Visual
;
2702 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2704 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2706 GLint _Xmin
, _Xmax
; /**< inclusive */
2707 GLint _Ymin
, _Ymax
; /**< exclusive */
2710 /** \name Derived Z buffer stuff */
2712 GLuint _DepthMax
; /**< Max depth buffer value */
2713 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2714 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2717 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2720 /** Integer color values */
2721 GLboolean _IntegerColor
;
2723 /* ARB_color_buffer_float */
2724 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
2725 GLboolean _HasSNormOrFloatColorBuffer
;
2727 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2728 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2730 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2731 * attribute group and GL_PIXEL attribute group, respectively.
2733 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2734 GLenum ColorReadBuffer
;
2736 /** Computed from ColorDraw/ReadBuffer above */
2737 GLuint _NumColorDrawBuffers
;
2738 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2739 GLint _ColorReadBufferIndex
; /* -1 = None */
2740 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2741 struct gl_renderbuffer
*_ColorReadBuffer
;
2745 /** Delete this framebuffer */
2746 void (*Delete
)(struct gl_framebuffer
*fb
);
2751 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2755 GLushort RangeMin
; /**< min value exponent */
2756 GLushort RangeMax
; /**< max value exponent */
2757 GLushort Precision
; /**< number of mantissa bits */
2762 * Limits for vertex, geometry and fragment programs/shaders.
2764 struct gl_program_constants
2766 /* logical limits */
2767 GLuint MaxInstructions
;
2768 GLuint MaxAluInstructions
;
2769 GLuint MaxTexInstructions
;
2770 GLuint MaxTexIndirections
;
2773 GLuint MaxAddressRegs
;
2774 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2775 GLuint MaxParameters
;
2776 GLuint MaxLocalParams
;
2777 GLuint MaxEnvParams
;
2778 /* native/hardware limits */
2779 GLuint MaxNativeInstructions
;
2780 GLuint MaxNativeAluInstructions
;
2781 GLuint MaxNativeTexInstructions
;
2782 GLuint MaxNativeTexIndirections
;
2783 GLuint MaxNativeAttribs
;
2784 GLuint MaxNativeTemps
;
2785 GLuint MaxNativeAddressRegs
;
2786 GLuint MaxNativeParameters
;
2788 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2789 /* ES 2.0 and GL_ARB_ES2_compatibility */
2790 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2791 struct gl_precision LowInt
, MediumInt
, HighInt
;
2792 /* GL_ARB_uniform_buffer_object */
2793 GLuint MaxUniformBlocks
;
2794 GLuint MaxCombinedUniformComponents
;
2795 GLuint MaxTextureImageUnits
;
2800 * Constants which may be overridden by device driver during context creation
2801 * but are never changed after that.
2805 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
2806 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
2807 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2808 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2809 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
2810 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2811 GLuint MaxTextureCoordUnits
;
2812 GLuint MaxCombinedTextureImageUnits
;
2813 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
2814 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2815 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2816 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2818 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
2820 GLuint MaxArrayLockSize
;
2824 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2825 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2826 GLfloat PointSizeGranularity
;
2827 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2828 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2829 GLfloat LineWidthGranularity
;
2831 GLuint MaxClipPlanes
;
2833 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2834 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2836 GLuint MaxViewportWidth
, MaxViewportHeight
;
2838 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2839 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2840 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2841 GLuint MaxProgramMatrices
;
2842 GLuint MaxProgramMatrixStackDepth
;
2845 GLuint SamplesPassed
;
2848 GLuint PrimitivesGenerated
;
2849 GLuint PrimitivesWritten
;
2852 /** vertex array / buffer object bounds checking */
2853 GLboolean CheckArrayBounds
;
2855 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2857 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2858 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2859 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2861 /** Number of varying vectors between any two shader stages. */
2863 GLuint MaxVaryingComponents
;
2866 * GL_ARB_uniform_buffer_object
2868 GLuint MaxCombinedUniformBlocks
;
2869 GLuint MaxUniformBufferBindings
;
2870 GLuint MaxUniformBlockSize
;
2871 GLuint UniformBufferOffsetAlignment
;
2874 /** GL_ARB_geometry_shader4 */
2875 GLuint MaxGeometryOutputVertices
;
2876 GLuint MaxGeometryTotalOutputComponents
;
2878 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2881 * Changes default GLSL extension behavior from "error" to "warn". It's out
2882 * of spec, but it can make some apps work that otherwise wouldn't.
2884 GLboolean ForceGLSLExtensionsWarn
;
2887 * If non-zero, forces GLSL shaders without the #version directive to behave
2888 * as if they began with "#version ForceGLSLVersion".
2890 GLuint ForceGLSLVersion
;
2893 * Does the driver support real 32-bit integers? (Otherwise, integers are
2894 * simulated via floats.)
2896 GLboolean NativeIntegers
;
2899 * If the driver supports real 32-bit integers, what integer value should be
2900 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2902 GLuint UniformBooleanTrue
;
2904 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2905 GLbitfield SupportedBumpUnits
;
2908 * Maximum amount of time, measured in nanseconds, that the server can wait.
2910 GLuint64 MaxServerWaitTimeout
;
2912 /** GL_EXT_provoking_vertex */
2913 GLboolean QuadsFollowProvokingVertexConvention
;
2915 /** OpenGL version 3.0 */
2916 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2918 /** OpenGL version 3.2 */
2919 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2921 /** GL_EXT_transform_feedback */
2922 GLuint MaxTransformFeedbackBuffers
;
2923 GLuint MaxTransformFeedbackSeparateComponents
;
2924 GLuint MaxTransformFeedbackInterleavedComponents
;
2925 GLuint MaxVertexStreams
;
2927 /** GL_EXT_gpu_shader4 */
2928 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2930 /* GL_ARB_robustness */
2931 GLenum ResetStrategy
;
2933 /* GL_ARB_blend_func_extended */
2934 GLuint MaxDualSourceDrawBuffers
;
2937 * Whether the implementation strips out and ignores texture borders.
2939 * Many GPU hardware implementations don't support rendering with texture
2940 * borders and mipmapped textures. (Note: not static border color, but the
2941 * old 1-pixel border around each edge). Implementations then have to do
2942 * slow fallbacks to be correct, or just ignore the border and be fast but
2943 * wrong. Setting the flag strips the border off of TexImage calls,
2944 * providing "fast but wrong" at significantly reduced driver complexity.
2946 * Texture borders are deprecated in GL 3.0.
2948 GLboolean StripTextureBorder
;
2951 * For drivers which can do a better job at eliminating unused uniforms
2952 * than the GLSL compiler.
2954 * XXX Remove these as soon as a better solution is available.
2956 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
2959 * Force software support for primitive restart in the VBO module.
2961 GLboolean PrimitiveRestartInSoftware
;
2963 /** GL_ARB_map_buffer_alignment */
2964 GLuint MinMapBufferAlignment
;
2967 * Disable varying packing. This is out of spec, but potentially useful
2968 * for older platforms that supports a limited number of texture
2969 * indirections--on these platforms, unpacking the varyings in the fragment
2970 * shader increases the number of texture indirections by 1, which might
2971 * make some shaders not executable at all.
2973 * Drivers that support transform feedback must set this value to GL_FALSE.
2975 GLboolean DisableVaryingPacking
;
2978 * Maximum value supported for an index in DrawElements and friends.
2980 * This must be at least (1ull<<24)-1. The default value is
2983 * \since ES 3.0 or GL_ARB_ES3_compatibility
2984 * \sa _mesa_init_constants
2986 GLuint64 MaxElementIndex
;
2989 * Disable interpretation of line continuations (lines ending with a
2990 * backslash character ('\') in GLSL source.
2992 GLboolean DisableGLSLLineContinuations
;
2994 /** GL_ARB_texture_multisample */
2995 GLint MaxColorTextureSamples
;
2996 GLint MaxDepthTextureSamples
;
2997 GLint MaxIntegerSamples
;
3002 * Enable flag for each OpenGL extension. Different device drivers will
3003 * enable different extensions at runtime.
3005 struct gl_extensions
3007 GLboolean dummy
; /* don't remove this! */
3008 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3009 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3010 GLboolean ANGLE_texture_compression_dxt
;
3011 GLboolean ARB_ES2_compatibility
;
3012 GLboolean ARB_ES3_compatibility
;
3013 GLboolean ARB_base_instance
;
3014 GLboolean ARB_blend_func_extended
;
3015 GLboolean ARB_color_buffer_float
;
3016 GLboolean ARB_conservative_depth
;
3017 GLboolean ARB_depth_buffer_float
;
3018 GLboolean ARB_depth_clamp
;
3019 GLboolean ARB_depth_texture
;
3020 GLboolean ARB_draw_buffers_blend
;
3021 GLboolean ARB_draw_elements_base_vertex
;
3022 GLboolean ARB_draw_instanced
;
3023 GLboolean ARB_fragment_coord_conventions
;
3024 GLboolean ARB_fragment_program
;
3025 GLboolean ARB_fragment_program_shadow
;
3026 GLboolean ARB_fragment_shader
;
3027 GLboolean ARB_framebuffer_object
;
3028 GLboolean ARB_explicit_attrib_location
;
3029 GLboolean ARB_geometry_shader4
;
3030 GLboolean ARB_gpu_shader5
;
3031 GLboolean ARB_half_float_pixel
;
3032 GLboolean ARB_half_float_vertex
;
3033 GLboolean ARB_instanced_arrays
;
3034 GLboolean ARB_internalformat_query
;
3035 GLboolean ARB_map_buffer_alignment
;
3036 GLboolean ARB_map_buffer_range
;
3037 GLboolean ARB_occlusion_query
;
3038 GLboolean ARB_occlusion_query2
;
3039 GLboolean ARB_point_sprite
;
3040 GLboolean ARB_seamless_cube_map
;
3041 GLboolean ARB_shader_bit_encoding
;
3042 GLboolean ARB_shader_stencil_export
;
3043 GLboolean ARB_shader_texture_lod
;
3044 GLboolean ARB_shading_language_packing
;
3045 GLboolean ARB_shading_language_420pack
;
3046 GLboolean ARB_shadow
;
3048 GLboolean ARB_texture_border_clamp
;
3049 GLboolean ARB_texture_buffer_object
;
3050 GLboolean ARB_texture_buffer_object_rgb32
;
3051 GLboolean ARB_texture_buffer_range
;
3052 GLboolean ARB_texture_compression_rgtc
;
3053 GLboolean ARB_texture_cube_map
;
3054 GLboolean ARB_texture_cube_map_array
;
3055 GLboolean ARB_texture_env_combine
;
3056 GLboolean ARB_texture_env_crossbar
;
3057 GLboolean ARB_texture_env_dot3
;
3058 GLboolean ARB_texture_float
;
3059 GLboolean ARB_texture_multisample
;
3060 GLboolean ARB_texture_non_power_of_two
;
3061 GLboolean ARB_texture_query_lod
;
3062 GLboolean ARB_texture_rg
;
3063 GLboolean ARB_texture_rgb10_a2ui
;
3064 GLboolean ARB_timer_query
;
3065 GLboolean ARB_transform_feedback2
;
3066 GLboolean ARB_transform_feedback3
;
3067 GLboolean ARB_transform_feedback_instanced
;
3068 GLboolean ARB_uniform_buffer_object
;
3069 GLboolean ARB_vertex_program
;
3070 GLboolean ARB_vertex_shader
;
3071 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3072 GLboolean EXT_blend_color
;
3073 GLboolean EXT_blend_equation_separate
;
3074 GLboolean EXT_blend_func_separate
;
3075 GLboolean EXT_blend_minmax
;
3076 GLboolean EXT_depth_bounds_test
;
3077 GLboolean EXT_draw_buffers2
;
3078 GLboolean EXT_framebuffer_blit
;
3079 GLboolean EXT_framebuffer_multisample
;
3080 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3081 GLboolean EXT_framebuffer_sRGB
;
3082 GLboolean EXT_gpu_program_parameters
;
3083 GLboolean EXT_gpu_shader4
;
3084 GLboolean EXT_packed_depth_stencil
;
3085 GLboolean EXT_packed_float
;
3086 GLboolean EXT_pixel_buffer_object
;
3087 GLboolean EXT_point_parameters
;
3088 GLboolean EXT_provoking_vertex
;
3089 GLboolean EXT_separate_shader_objects
;
3090 GLboolean EXT_stencil_two_side
;
3091 GLboolean EXT_texture3D
;
3092 GLboolean EXT_texture_array
;
3093 GLboolean EXT_texture_compression_latc
;
3094 GLboolean EXT_texture_compression_s3tc
;
3095 GLboolean EXT_texture_env_dot3
;
3096 GLboolean EXT_texture_filter_anisotropic
;
3097 GLboolean EXT_texture_integer
;
3098 GLboolean EXT_texture_mirror_clamp
;
3099 GLboolean EXT_texture_shared_exponent
;
3100 GLboolean EXT_texture_snorm
;
3101 GLboolean EXT_texture_sRGB
;
3102 GLboolean EXT_texture_sRGB_decode
;
3103 GLboolean EXT_texture_swizzle
;
3104 GLboolean EXT_transform_feedback
;
3105 GLboolean EXT_timer_query
;
3106 GLboolean EXT_vertex_array_bgra
;
3107 GLboolean OES_standard_derivatives
;
3108 /* vendor extensions */
3109 GLboolean AMD_seamless_cubemap_per_texture
;
3110 GLboolean AMD_vertex_shader_layer
;
3111 GLboolean APPLE_object_purgeable
;
3112 GLboolean ATI_envmap_bumpmap
;
3113 GLboolean ATI_texture_compression_3dc
;
3114 GLboolean ATI_texture_mirror_once
;
3115 GLboolean ATI_texture_env_combine3
;
3116 GLboolean ATI_fragment_shader
;
3117 GLboolean ATI_separate_stencil
;
3118 GLboolean MESA_pack_invert
;
3119 GLboolean MESA_ycbcr_texture
;
3120 GLboolean MESA_texture_array
;
3121 GLboolean NV_conditional_render
;
3122 GLboolean NV_fog_distance
;
3123 GLboolean NV_fragment_program_option
;
3124 GLboolean NV_point_sprite
;
3125 GLboolean NV_primitive_restart
;
3126 GLboolean NV_texture_barrier
;
3127 GLboolean NV_texture_env_combine4
;
3128 GLboolean NV_texture_rectangle
;
3129 GLboolean TDFX_texture_compression_FXT1
;
3130 GLboolean OES_EGL_image
;
3131 GLboolean OES_draw_texture
;
3132 GLboolean OES_depth_texture_cube_map
;
3133 GLboolean OES_EGL_image_external
;
3134 GLboolean OES_compressed_ETC1_RGB8_texture
;
3135 GLboolean extension_sentinel
;
3136 /** The extension string */
3137 const GLubyte
*String
;
3138 /** Number of supported extensions */
3144 * A stack of matrices (projection, modelview, color, texture, etc).
3146 struct gl_matrix_stack
3148 GLmatrix
*Top
; /**< points into Stack */
3149 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3150 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3151 GLuint MaxDepth
; /**< size of Stack[] array */
3152 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3157 * \name Bits for image transfer operations
3158 * \sa __struct gl_contextRec::ImageTransferState.
3161 #define IMAGE_SCALE_BIAS_BIT 0x1
3162 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3163 #define IMAGE_MAP_COLOR_BIT 0x4
3164 #define IMAGE_CLAMP_BIT 0x800
3167 /** Pixel Transfer ops */
3168 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3169 IMAGE_SHIFT_OFFSET_BIT | \
3170 IMAGE_MAP_COLOR_BIT)
3173 * \name Bits to indicate what state has changed.
3176 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3177 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3178 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3179 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3180 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3181 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3182 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3183 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3184 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3185 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3186 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3187 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3188 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3189 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3190 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3191 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3192 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3193 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3194 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3195 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3196 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3197 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3198 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3199 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3200 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3201 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3202 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3203 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3204 #define _NEW_BUFFER_OBJECT (1 << 28)
3205 #define _NEW_FRAG_CLAMP (1 << 29)
3206 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3207 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3213 * Composite state flags
3216 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3222 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3232 /* This has to be included here. */
3237 * Display list flags.
3238 * Strictly this is a tnl-private concept, but it doesn't seem
3239 * worthwhile adding a tnl private structure just to hold this one bit
3242 #define DLIST_DANGLING_REFS 0x1
3245 /** Opaque declaration of display list payload data type */
3246 union gl_dlist_node
;
3250 * Provide a location where information about a display list can be
3251 * collected. Could be extended with driverPrivate structures,
3252 * etc. in the future.
3254 struct gl_display_list
3257 GLbitfield Flags
; /**< DLIST_x flags */
3258 /** The dlist commands are in a linked list of nodes */
3259 union gl_dlist_node
*Head
;
3264 * State used during display list compilation and execution.
3266 struct gl_dlist_state
3268 GLuint CallDepth
; /**< Current recursion calling depth */
3270 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3271 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3272 GLuint CurrentPos
; /**< Index into current block of nodes */
3274 GLvertexformat ListVtxfmt
;
3276 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3277 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3279 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3280 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3283 /* State known to have been set by the currently-compiling display
3284 * list. Used to eliminate some redundant state changes.
3292 * These are a mapping of the GL_ARB_debug_output enums to small enums
3293 * suitable for use as an array index.
3296 enum mesa_debug_source
{
3297 MESA_DEBUG_SOURCE_API
,
3298 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3299 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3300 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3301 MESA_DEBUG_SOURCE_APPLICATION
,
3302 MESA_DEBUG_SOURCE_OTHER
,
3303 MESA_DEBUG_SOURCE_COUNT
3306 enum mesa_debug_type
{
3307 MESA_DEBUG_TYPE_ERROR
,
3308 MESA_DEBUG_TYPE_DEPRECATED
,
3309 MESA_DEBUG_TYPE_UNDEFINED
,
3310 MESA_DEBUG_TYPE_PORTABILITY
,
3311 MESA_DEBUG_TYPE_PERFORMANCE
,
3312 MESA_DEBUG_TYPE_OTHER
,
3313 MESA_DEBUG_TYPE_COUNT
3316 enum mesa_debug_severity
{
3317 MESA_DEBUG_SEVERITY_LOW
,
3318 MESA_DEBUG_SEVERITY_MEDIUM
,
3319 MESA_DEBUG_SEVERITY_HIGH
,
3320 MESA_DEBUG_SEVERITY_COUNT
3326 * An error, warning, or other piece of debug information for an application
3327 * to consume via GL_ARB_debug_output.
3331 enum mesa_debug_source source
;
3332 enum mesa_debug_type type
;
3334 enum mesa_debug_severity severity
;
3339 struct gl_debug_namespace
3341 struct _mesa_HashTable
*IDs
;
3342 unsigned ZeroID
; /* a HashTable won't take zero, so store its state here */
3343 /** lists of IDs in the hash table at each severity */
3344 struct simple_node Severity
[MESA_DEBUG_SEVERITY_COUNT
];
3347 struct gl_debug_state
3349 GLDEBUGPROCARB Callback
;
3350 const void *CallbackData
;
3351 GLboolean SyncOutput
;
3352 GLboolean Defaults
[MESA_DEBUG_SEVERITY_COUNT
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3353 struct gl_debug_namespace Namespaces
[MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3354 struct gl_debug_msg Log
[MAX_DEBUG_LOGGED_MESSAGES
];
3357 GLint NextMsgLength
; /* redundant, but copied here from Log[NextMsg].length
3358 for the sake of the offsetof() code in get.c */
3362 * Enum for the OpenGL APIs we know about and may support.
3364 * NOTE: This must match the api_enum table in
3365 * src/mesa/main/get_hash_generator.py
3369 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
3373 API_OPENGL_LAST
= API_OPENGL_CORE
3377 * Driver-specific state flags.
3379 * These are or'd with gl_context::NewDriverState to notify a driver about
3380 * a state change. The driver sets the flags at context creation and
3381 * the meaning of the bits set is opaque to core Mesa.
3383 struct gl_driver_flags
3385 /** gl_context::Array::_DrawArrays (vertex array state) */
3386 GLbitfield NewArray
;
3388 /** gl_context::TransformFeedback::CurrentObject */
3389 GLbitfield NewTransformFeedback
;
3391 /** gl_context::RasterDiscard */
3392 GLbitfield NewRasterizerDiscard
;
3395 * gl_context::UniformBufferBindings
3396 * gl_shader_program::UniformBlocks
3398 GLbitfield NewUniformBuffer
;
3401 struct gl_uniform_buffer_binding
3403 struct gl_buffer_object
*BufferObject
;
3404 /** Start of uniform block data in the buffer */
3406 /** Size of data allowed to be referenced from the buffer (in bytes) */
3409 * glBindBufferBase() indicates that the Size should be ignored and only
3410 * limited by the current size of the BufferObject.
3412 GLboolean AutomaticSize
;
3416 * Mesa rendering context.
3418 * This is the central context data structure for Mesa. Almost all
3419 * OpenGL state is contained in this structure.
3420 * Think of this as a base class from which device drivers will derive
3423 * The struct gl_context typedef names this structure.
3427 /** State possibly shared with other contexts in the address space */
3428 struct gl_shared_state
*Shared
;
3430 /** \name API function pointer tables */
3434 * The current dispatch table for non-displaylist-saving execution, either
3435 * BeginEnd or OutsideBeginEnd
3437 struct _glapi_table
*Exec
;
3439 * The normal dispatch table for non-displaylist-saving, non-begin/end
3441 struct _glapi_table
*OutsideBeginEnd
;
3442 /** The dispatch table used between glNewList() and glEndList() */
3443 struct _glapi_table
*Save
;
3445 * The dispatch table used between glBegin() and glEnd() (outside of a
3446 * display list). Only valid functions between those two are set, which is
3447 * mostly just the set in a GLvertexformat struct.
3449 struct _glapi_table
*BeginEnd
;
3451 * Tracks the current dispatch table out of the 3 above, so that it can be
3452 * re-set on glXMakeCurrent().
3454 struct _glapi_table
*CurrentDispatch
;
3457 struct gl_config Visual
;
3458 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3459 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3460 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3461 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3464 * Device driver function pointer table
3466 struct dd_function_table Driver
;
3468 /** Core/Driver constants */
3469 struct gl_constants Const
;
3471 /** \name The various 4x4 matrix stacks */
3473 struct gl_matrix_stack ModelviewMatrixStack
;
3474 struct gl_matrix_stack ProjectionMatrixStack
;
3475 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3476 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3477 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3480 /** Combined modelview and projection matrix */
3481 GLmatrix _ModelProjectMatrix
;
3483 /** \name Display lists */
3484 struct gl_dlist_state ListState
;
3486 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3487 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3489 /** Extension information */
3490 struct gl_extensions Extensions
;
3492 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3494 char *VersionString
;
3496 /** \name State attribute stack (for glPush/PopAttrib) */
3498 GLuint AttribStackDepth
;
3499 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3502 /** \name Renderer attribute groups
3504 * We define a struct for each attribute group to make pushing and popping
3505 * attributes easy. Also it's a good organization.
3508 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3509 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3510 struct gl_current_attrib Current
; /**< Current attributes */
3511 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3512 struct gl_eval_attrib Eval
; /**< Eval attributes */
3513 struct gl_fog_attrib Fog
; /**< Fog attributes */
3514 struct gl_hint_attrib Hint
; /**< Hint attributes */
3515 struct gl_light_attrib Light
; /**< Light attributes */
3516 struct gl_line_attrib Line
; /**< Line attributes */
3517 struct gl_list_attrib List
; /**< List attributes */
3518 struct gl_multisample_attrib Multisample
;
3519 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3520 struct gl_point_attrib Point
; /**< Point attributes */
3521 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3522 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3523 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3524 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3525 struct gl_texture_attrib Texture
; /**< Texture attributes */
3526 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3527 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3530 /** \name Client attribute stack */
3532 GLuint ClientAttribStackDepth
;
3533 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3536 /** \name Client attribute groups */
3538 struct gl_array_attrib Array
; /**< Vertex arrays */
3539 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3540 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3541 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3544 /** \name Other assorted state (not pushed/popped on attribute stack) */
3546 struct gl_pixelmaps PixelMaps
;
3548 struct gl_evaluators EvalMap
; /**< All evaluators */
3549 struct gl_feedback Feedback
; /**< Feedback */
3550 struct gl_selection Select
; /**< Selection */
3552 struct gl_program_state Program
; /**< general program state */
3553 struct gl_vertex_program_state VertexProgram
;
3554 struct gl_fragment_program_state FragmentProgram
;
3555 struct gl_geometry_program_state GeometryProgram
;
3556 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3558 struct gl_shader_state Shader
; /**< GLSL shader object state */
3559 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3561 struct gl_query_state Query
; /**< occlusion, timer queries */
3563 struct gl_transform_feedback_state TransformFeedback
;
3565 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3566 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3569 * Current GL_ARB_uniform_buffer_object binding referenced by
3570 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
3572 struct gl_buffer_object
*UniformBuffer
;
3575 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
3576 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
3577 * associated with uniform blocks by glUniformBlockBinding()'s state in the
3580 struct gl_uniform_buffer_binding
3581 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
3585 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3587 /* GL_EXT_framebuffer_object */
3588 struct gl_renderbuffer
*CurrentRenderbuffer
;
3590 GLenum ErrorValue
; /**< Last error code */
3592 /* GL_ARB_robustness */
3596 * Recognize and silence repeated error debug messages in buggy apps.
3598 const char *ErrorDebugFmtString
;
3599 GLuint ErrorDebugCount
;
3601 /* GL_ARB_debug_output */
3602 struct gl_debug_state Debug
;
3604 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3605 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3606 GLbitfield NewDriverState
;/**< bitwise-or of flags from DriverFlags */
3608 struct gl_driver_flags DriverFlags
;
3610 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3612 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3614 /** \name Derived state */
3615 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3616 GLfloat _EyeZDir
[3];
3617 GLfloat _ModelViewInvScale
;
3618 GLboolean _NeedEyeCoords
;
3619 GLboolean _ForceEyeCoords
;
3621 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3623 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3625 /** \name For debugging/development only */
3627 GLboolean FirstTimeCurrent
;
3630 /** software compression/decompression supported or not */
3631 GLboolean Mesa_DXTn
;
3633 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3635 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
3638 * \name Hooks for module contexts.
3640 * These will eventually live in the driver or elsewhere.
3643 void *swrast_context
;
3644 void *swsetup_context
;
3645 void *swtnl_context
;
3647 struct st_context
*st
;
3654 extern int MESA_VERBOSE
;
3655 extern int MESA_DEBUG_FLAGS
;
3656 # define MESA_FUNCTION __FUNCTION__
3658 # define MESA_VERBOSE 0
3659 # define MESA_DEBUG_FLAGS 0
3660 # define MESA_FUNCTION "a function"
3667 /** The MESA_VERBOSE var is a bitmask of these flags */
3670 VERBOSE_VARRAY
= 0x0001,
3671 VERBOSE_TEXTURE
= 0x0002,
3672 VERBOSE_MATERIAL
= 0x0004,
3673 VERBOSE_PIPELINE
= 0x0008,
3674 VERBOSE_DRIVER
= 0x0010,
3675 VERBOSE_STATE
= 0x0020,
3676 VERBOSE_API
= 0x0040,
3677 VERBOSE_DISPLAY_LIST
= 0x0100,
3678 VERBOSE_LIGHTING
= 0x0200,
3679 VERBOSE_PRIMS
= 0x0400,
3680 VERBOSE_VERTS
= 0x0800,
3681 VERBOSE_DISASSEM
= 0x1000,
3682 VERBOSE_DRAW
= 0x2000,
3683 VERBOSE_SWAPBUFFERS
= 0x4000
3687 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3690 DEBUG_SILENT
= (1 << 0),
3691 DEBUG_ALWAYS_FLUSH
= (1 << 1),
3692 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
3693 DEBUG_INCOMPLETE_FBO
= (1 << 3)
3702 #endif /* MTYPES_H */