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
;
87 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
88 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
89 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
90 #define PRIM_UNKNOWN (PRIM_MAX + 2)
95 * Indexes for vertex program attributes.
96 * GL_NV_vertex_program aliases generic attributes over the conventional
97 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
98 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
99 * generic attributes are distinct/separate).
104 VERT_ATTRIB_WEIGHT
= 1,
105 VERT_ATTRIB_NORMAL
= 2,
106 VERT_ATTRIB_COLOR0
= 3,
107 VERT_ATTRIB_COLOR1
= 4,
109 VERT_ATTRIB_COLOR_INDEX
= 6,
110 VERT_ATTRIB_EDGEFLAG
= 7,
111 VERT_ATTRIB_TEX0
= 8,
112 VERT_ATTRIB_TEX1
= 9,
113 VERT_ATTRIB_TEX2
= 10,
114 VERT_ATTRIB_TEX3
= 11,
115 VERT_ATTRIB_TEX4
= 12,
116 VERT_ATTRIB_TEX5
= 13,
117 VERT_ATTRIB_TEX6
= 14,
118 VERT_ATTRIB_TEX7
= 15,
119 VERT_ATTRIB_POINT_SIZE
= 16,
120 VERT_ATTRIB_GENERIC0
= 17,
121 VERT_ATTRIB_GENERIC1
= 18,
122 VERT_ATTRIB_GENERIC2
= 19,
123 VERT_ATTRIB_GENERIC3
= 20,
124 VERT_ATTRIB_GENERIC4
= 21,
125 VERT_ATTRIB_GENERIC5
= 22,
126 VERT_ATTRIB_GENERIC6
= 23,
127 VERT_ATTRIB_GENERIC7
= 24,
128 VERT_ATTRIB_GENERIC8
= 25,
129 VERT_ATTRIB_GENERIC9
= 26,
130 VERT_ATTRIB_GENERIC10
= 27,
131 VERT_ATTRIB_GENERIC11
= 28,
132 VERT_ATTRIB_GENERIC12
= 29,
133 VERT_ATTRIB_GENERIC13
= 30,
134 VERT_ATTRIB_GENERIC14
= 31,
135 VERT_ATTRIB_GENERIC15
= 32,
140 * Symbolic constats to help iterating over
141 * specific blocks of vertex attributes.
144 * includes all fixed function attributes as well as
145 * the aliased GL_NV_vertex_program shader attributes.
147 * include the classic texture coordinate attributes.
148 * Is a subset of VERT_ATTRIB_FF.
149 * VERT_ATTRIB_GENERIC
150 * include the OpenGL 2.0+ GLSL generic shader attributes.
151 * These alias the generic GL_ARB_vertex_shader attributes.
153 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
154 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
156 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
157 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
159 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
160 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
163 * Bitflags for vertex attributes.
164 * These are used in bitfields in many places.
167 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
168 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
169 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
170 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
171 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
172 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
173 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
174 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
175 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
176 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
177 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
178 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
179 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
180 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
181 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
182 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
183 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
184 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
186 #define VERT_BIT(i) BITFIELD64_BIT(i)
187 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
189 #define VERT_BIT_FF(i) VERT_BIT(i)
190 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
191 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
192 #define VERT_BIT_TEX_ALL \
193 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
195 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
196 #define VERT_BIT_GENERIC_ALL \
197 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
202 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
203 * fragment shader inputs.
205 * Note that some of these values are not available to all pipeline stages.
207 * When this enum is updated, the following code must be updated too:
208 * - vertResults (in prog_print.c's arb_output_attrib_string())
209 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
210 * - _mesa_varying_slot_in_fs()
215 VARYING_SLOT_COL0
, /* COL0 and COL1 must be contiguous */
218 VARYING_SLOT_TEX0
, /* TEX0-TEX7 must be contiguous */
226 VARYING_SLOT_PSIZ
, /* Does not appear in FS */
227 VARYING_SLOT_BFC0
, /* Does not appear in FS */
228 VARYING_SLOT_BFC1
, /* Does not appear in FS */
229 VARYING_SLOT_EDGE
, /* Does not appear in FS */
230 VARYING_SLOT_CLIP_VERTEX
, /* Does not appear in FS */
231 VARYING_SLOT_CLIP_DIST0
,
232 VARYING_SLOT_CLIP_DIST1
,
233 VARYING_SLOT_PRIMITIVE_ID
, /* Does not appear in VS */
234 VARYING_SLOT_LAYER
, /* Appears as VS or GS output */
235 VARYING_SLOT_FACE
, /* FS only */
236 VARYING_SLOT_PNTC
, /* FS only */
237 VARYING_SLOT_VAR0
, /* First generic varying slot */
238 VARYING_SLOT_MAX
= VARYING_SLOT_VAR0
+ MAX_VARYING
243 * Bitflags for varying slots.
246 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
247 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
248 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
249 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
250 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
251 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
252 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
253 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
254 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
255 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
256 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
257 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
258 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
259 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
260 MAX_TEXTURE_COORD_UNITS)
261 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
262 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
263 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
264 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
265 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
266 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
267 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
268 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
269 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
270 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
271 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
272 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
277 * Determine if the given gl_varying_slot appears in the fragment shader.
279 static inline GLboolean
280 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
283 case VARYING_SLOT_PSIZ
:
284 case VARYING_SLOT_BFC0
:
285 case VARYING_SLOT_BFC1
:
286 case VARYING_SLOT_EDGE
:
287 case VARYING_SLOT_CLIP_VERTEX
:
288 case VARYING_SLOT_LAYER
:
297 * Fragment program results
301 FRAG_RESULT_DEPTH
= 0,
302 FRAG_RESULT_STENCIL
= 1,
303 /* If a single color should be written to all render targets, this
304 * register is written. No FRAG_RESULT_DATAn will be written.
306 FRAG_RESULT_COLOR
= 2,
308 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
309 * or ARB_fragment_program fragment.color[n]) color results. If
310 * any are written, FRAG_RESULT_COLOR will not be written.
312 FRAG_RESULT_DATA0
= 3,
313 FRAG_RESULT_MAX
= (FRAG_RESULT_DATA0
+ MAX_DRAW_BUFFERS
)
318 * Indexes for all renderbuffers
322 /* the four standard color buffers */
330 /* optional aux buffer */
332 /* generic renderbuffers */
345 * Bit flags for all renderbuffers
347 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
348 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
349 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
350 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
351 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
352 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
353 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
354 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
355 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
356 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
357 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
358 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
359 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
360 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
361 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
362 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
363 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
364 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
365 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
368 * Mask of all the color buffer bits (but not accum).
370 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
371 BUFFER_BIT_BACK_LEFT | \
372 BUFFER_BIT_FRONT_RIGHT | \
373 BUFFER_BIT_BACK_RIGHT | \
375 BUFFER_BIT_COLOR0 | \
376 BUFFER_BIT_COLOR1 | \
377 BUFFER_BIT_COLOR2 | \
378 BUFFER_BIT_COLOR3 | \
379 BUFFER_BIT_COLOR4 | \
380 BUFFER_BIT_COLOR5 | \
381 BUFFER_BIT_COLOR6 | \
386 * Framebuffer configuration (aka visual / pixelformat)
387 * Note: some of these fields should be boolean, but it appears that
388 * code in drivers/dri/common/util.c requires int-sized fields.
394 GLboolean colorIndexMode
; /* XXX is this used anywhere? */
395 GLuint doubleBufferMode
;
398 GLboolean haveAccumBuffer
;
399 GLboolean haveDepthBuffer
;
400 GLboolean haveStencilBuffer
;
402 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
403 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
404 GLint rgbBits
; /* total bits for rgb */
405 GLint indexBits
; /* total bits for colorindex */
407 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
415 /* EXT_visual_rating / GLX 1.2 */
418 /* EXT_visual_info / GLX 1.2 */
419 GLint transparentPixel
;
420 /* colors are floats scaled to ints */
421 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
422 GLint transparentIndex
;
424 /* ARB_multisample / SGIS_multisample */
428 /* SGIX_pbuffer / GLX 1.3 */
429 GLint maxPbufferWidth
;
430 GLint maxPbufferHeight
;
431 GLint maxPbufferPixels
;
432 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
433 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
435 /* OML_swap_method */
438 /* EXT_texture_from_pixmap */
439 GLint bindToTextureRgb
;
440 GLint bindToTextureRgba
;
441 GLint bindToMipmapTexture
;
442 GLint bindToTextureTargets
;
445 /* EXT_framebuffer_sRGB */
451 * \name Bit flags used for updating material values.
454 #define MAT_ATTRIB_FRONT_AMBIENT 0
455 #define MAT_ATTRIB_BACK_AMBIENT 1
456 #define MAT_ATTRIB_FRONT_DIFFUSE 2
457 #define MAT_ATTRIB_BACK_DIFFUSE 3
458 #define MAT_ATTRIB_FRONT_SPECULAR 4
459 #define MAT_ATTRIB_BACK_SPECULAR 5
460 #define MAT_ATTRIB_FRONT_EMISSION 6
461 #define MAT_ATTRIB_BACK_EMISSION 7
462 #define MAT_ATTRIB_FRONT_SHININESS 8
463 #define MAT_ATTRIB_BACK_SHININESS 9
464 #define MAT_ATTRIB_FRONT_INDEXES 10
465 #define MAT_ATTRIB_BACK_INDEXES 11
466 #define MAT_ATTRIB_MAX 12
468 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
469 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
470 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
471 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
472 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
473 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
475 #define MAT_INDEX_AMBIENT 0
476 #define MAT_INDEX_DIFFUSE 1
477 #define MAT_INDEX_SPECULAR 2
479 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
480 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
481 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
482 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
483 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
484 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
485 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
486 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
487 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
488 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
489 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
490 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
493 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
494 MAT_BIT_FRONT_AMBIENT | \
495 MAT_BIT_FRONT_DIFFUSE | \
496 MAT_BIT_FRONT_SPECULAR | \
497 MAT_BIT_FRONT_SHININESS | \
498 MAT_BIT_FRONT_INDEXES)
500 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
501 MAT_BIT_BACK_AMBIENT | \
502 MAT_BIT_BACK_DIFFUSE | \
503 MAT_BIT_BACK_SPECULAR | \
504 MAT_BIT_BACK_SHININESS | \
505 MAT_BIT_BACK_INDEXES)
507 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
516 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
524 #define LIGHT_SPOT 0x1
525 #define LIGHT_LOCAL_VIEWER 0x2
526 #define LIGHT_POSITIONAL 0x4
527 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
532 * Light source state.
536 struct gl_light
*next
; /**< double linked list with sentinel */
537 struct gl_light
*prev
;
539 GLfloat Ambient
[4]; /**< ambient color */
540 GLfloat Diffuse
[4]; /**< diffuse color */
541 GLfloat Specular
[4]; /**< specular color */
542 GLfloat EyePosition
[4]; /**< position in eye coordinates */
543 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
544 GLfloat SpotExponent
;
545 GLfloat SpotCutoff
; /**< in degrees */
546 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
547 GLfloat ConstantAttenuation
;
548 GLfloat LinearAttenuation
;
549 GLfloat QuadraticAttenuation
;
550 GLboolean Enabled
; /**< On/off flag */
553 * \name Derived fields
556 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
558 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
559 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
560 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
561 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
562 GLfloat _VP_inf_spot_attenuation
;
564 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
565 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
566 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
576 GLfloat Ambient
[4]; /**< ambient color */
577 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
578 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
579 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
580 * or GL_SEPARATE_SPECULAR_COLOR */
585 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
587 struct gl_accum_attrib
589 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
594 * Used for storing clear color, texture border color, etc.
595 * The float values are typically unclamped.
606 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
608 struct gl_colorbuffer_attrib
610 GLuint ClearIndex
; /**< Index for glClear */
611 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
612 GLuint IndexMask
; /**< Color index write mask */
613 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
615 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
618 * \name alpha testing
621 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
622 GLenum AlphaFunc
; /**< Alpha test function */
623 GLfloat AlphaRefUnclamped
;
624 GLclampf AlphaRef
; /**< Alpha reference value */
631 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
633 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
634 * control, only on the fixed-pointness of the render target.
635 * The query does however depend on fragment color clamping.
637 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
638 GLfloat BlendColor
[4]; /**< Blending color */
642 GLenum SrcRGB
; /**< RGB blend source term */
643 GLenum DstRGB
; /**< RGB blend dest term */
644 GLenum SrcA
; /**< Alpha blend source term */
645 GLenum DstA
; /**< Alpha blend dest term */
646 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
647 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
649 * Set if any blend factor uses SRC1. Computed at the time blend factors
652 GLboolean _UsesDualSrc
;
653 } Blend
[MAX_DRAW_BUFFERS
];
654 /** Are the blend func terms currently different for each buffer/target? */
655 GLboolean _BlendFuncPerBuffer
;
656 /** Are the blend equations currently different for each buffer/target? */
657 GLboolean _BlendEquationPerBuffer
;
664 GLenum LogicOp
; /**< Logic operator */
665 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
666 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
669 GLboolean DitherFlag
; /**< Dither enable flag */
671 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
672 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
673 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
675 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
680 * Current attribute group (GL_CURRENT_BIT).
682 struct gl_current_attrib
685 * \name Current vertex attributes.
686 * \note Values are valid only after FLUSH_VERTICES has been called.
687 * \note Index and Edgeflag current values are stored as floats in the
688 * SIX and SEVEN attribute slots.
690 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Position, color, texcoords, etc */
693 * \name Current raster position attributes (always valid).
694 * \note This set of attributes is very similar to the SWvertex struct.
697 GLfloat RasterPos
[4];
698 GLfloat RasterDistance
;
699 GLfloat RasterColor
[4];
700 GLfloat RasterSecondaryColor
[4];
701 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
702 GLboolean RasterPosValid
;
708 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
710 struct gl_depthbuffer_attrib
712 GLenum Func
; /**< Function for depth buffer compare */
713 GLclampd Clear
; /**< Value to clear depth buffer to */
714 GLboolean Test
; /**< Depth buffering enabled flag */
715 GLboolean Mask
; /**< Depth buffer writable? */
716 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
717 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
722 * Evaluator attribute group (GL_EVAL_BIT).
724 struct gl_eval_attrib
730 GLboolean Map1Color4
;
732 GLboolean Map1Normal
;
733 GLboolean Map1TextureCoord1
;
734 GLboolean Map1TextureCoord2
;
735 GLboolean Map1TextureCoord3
;
736 GLboolean Map1TextureCoord4
;
737 GLboolean Map1Vertex3
;
738 GLboolean Map1Vertex4
;
739 GLboolean Map2Color4
;
741 GLboolean Map2Normal
;
742 GLboolean Map2TextureCoord1
;
743 GLboolean Map2TextureCoord2
;
744 GLboolean Map2TextureCoord3
;
745 GLboolean Map2TextureCoord4
;
746 GLboolean Map2Vertex3
;
747 GLboolean Map2Vertex4
;
748 GLboolean AutoNormal
;
752 * \name Map Grid endpoints and divisions and calculated du values
756 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
757 GLint MapGrid2un
, MapGrid2vn
;
758 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
759 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
765 * Fog attribute group (GL_FOG_BIT).
769 GLboolean Enabled
; /**< Fog enabled flag */
770 GLfloat ColorUnclamped
[4]; /**< Fog color */
771 GLfloat Color
[4]; /**< Fog color */
772 GLfloat Density
; /**< Density >= 0.0 */
773 GLfloat Start
; /**< Start distance in eye coords */
774 GLfloat End
; /**< End distance in eye coords */
775 GLfloat Index
; /**< Fog index */
776 GLenum Mode
; /**< Fog mode */
777 GLboolean ColorSumEnabled
;
778 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
779 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
780 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
785 * Hint attribute group (GL_HINT_BIT).
787 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
789 struct gl_hint_attrib
791 GLenum PerspectiveCorrection
;
794 GLenum PolygonSmooth
;
796 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
797 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
798 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
803 * Lighting attribute group (GL_LIGHT_BIT).
805 struct gl_light_attrib
807 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
808 struct gl_lightmodel Model
; /**< Lighting model */
811 * Front and back material values.
812 * Note: must call FLUSH_VERTICES() before using.
814 struct gl_material Material
;
816 GLboolean Enabled
; /**< Lighting enabled flag */
817 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
818 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
819 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
820 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
821 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
822 GLboolean ColorMaterialEnabled
;
823 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
824 GLboolean _ClampVertexColor
;
826 struct gl_light EnabledList
; /**< List sentinel */
829 * Derived state for optimizations:
832 GLboolean _NeedEyeCoords
;
833 GLboolean _NeedVertices
; /**< Use fast shader? */
834 GLfloat _BaseColor
[2][3];
840 * Line attribute group (GL_LINE_BIT).
842 struct gl_line_attrib
844 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
845 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
846 GLushort StipplePattern
; /**< Stipple pattern */
847 GLint StippleFactor
; /**< Stipple repeat factor */
848 GLfloat Width
; /**< Line width */
853 * Display list attribute group (GL_LIST_BIT).
855 struct gl_list_attrib
862 * Multisample attribute group (GL_MULTISAMPLE_BIT).
864 struct gl_multisample_attrib
867 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
868 GLboolean SampleAlphaToCoverage
;
869 GLboolean SampleAlphaToOne
;
870 GLboolean SampleCoverage
;
871 GLfloat SampleCoverageValue
;
872 GLboolean SampleCoverageInvert
;
874 /* ARB_texture_multisample / GL3.2 additions */
875 GLboolean SampleMask
;
876 /** The GL spec defines this as an array but >32x MSAA is madness */
877 GLbitfield SampleMaskValue
;
882 * A pixelmap (see glPixelMap)
887 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
892 * Collection of all pixelmaps
896 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
897 struct gl_pixelmap GtoG
;
898 struct gl_pixelmap BtoB
;
899 struct gl_pixelmap AtoA
;
900 struct gl_pixelmap ItoR
;
901 struct gl_pixelmap ItoG
;
902 struct gl_pixelmap ItoB
;
903 struct gl_pixelmap ItoA
;
904 struct gl_pixelmap ItoI
;
905 struct gl_pixelmap StoS
;
910 * Pixel attribute group (GL_PIXEL_MODE_BIT).
912 struct gl_pixel_attrib
914 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
916 /*--- Begin Pixel Transfer State ---*/
917 /* Fields are in the order in which they're applied... */
919 /** Scale & Bias (index shift, offset) */
921 GLfloat RedBias
, RedScale
;
922 GLfloat GreenBias
, GreenScale
;
923 GLfloat BlueBias
, BlueScale
;
924 GLfloat AlphaBias
, AlphaScale
;
925 GLfloat DepthBias
, DepthScale
;
926 GLint IndexShift
, IndexOffset
;
930 /* Note: actual pixel maps are not part of this attrib group */
931 GLboolean MapColorFlag
;
932 GLboolean MapStencilFlag
;
934 /*--- End Pixel Transfer State ---*/
937 GLfloat ZoomX
, ZoomY
;
942 * Point attribute group (GL_POINT_BIT).
944 struct gl_point_attrib
946 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
947 GLfloat Size
; /**< User-specified point size */
948 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
949 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
950 GLfloat Threshold
; /**< GL_EXT_point_parameters */
951 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
952 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
953 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
954 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
955 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
960 * Polygon attribute group (GL_POLYGON_BIT).
962 struct gl_polygon_attrib
964 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
965 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
966 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
967 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
968 GLboolean CullFlag
; /**< Culling on/off flag */
969 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
970 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
971 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
972 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
973 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
974 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
975 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
976 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
981 * Scissor attributes (GL_SCISSOR_BIT).
983 struct gl_scissor_attrib
985 GLboolean Enabled
; /**< Scissor test enabled? */
986 GLint X
, Y
; /**< Lower left corner of box */
987 GLsizei Width
, Height
; /**< Size of box */
992 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
994 * Three sets of stencil data are tracked so that OpenGL 2.0,
995 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
996 * simultaneously. In each of the stencil state arrays, element 0 corresponds
997 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
998 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
999 * GL_EXT_stencil_two_side GL_BACK state.
1001 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1002 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1004 * The derived value \c _TestTwoSide is set when the front-face and back-face
1005 * stencil state are different.
1007 struct gl_stencil_attrib
1009 GLboolean Enabled
; /**< Enabled flag */
1010 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1011 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
1012 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
1013 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
1014 GLboolean _TestTwoSide
;
1015 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
1016 GLenum Function
[3]; /**< Stencil function */
1017 GLenum FailFunc
[3]; /**< Fail function */
1018 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
1019 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
1020 GLint Ref
[3]; /**< Reference value */
1021 GLuint ValueMask
[3]; /**< Value mask */
1022 GLuint WriteMask
[3]; /**< Write mask */
1023 GLuint Clear
; /**< Clear value */
1028 * An index for each type of texture object. These correspond to the GL
1029 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1030 * Note: the order is from highest priority to lowest priority.
1034 TEXTURE_2D_MULTISAMPLE_INDEX
,
1035 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
1036 TEXTURE_CUBE_ARRAY_INDEX
,
1037 TEXTURE_BUFFER_INDEX
,
1038 TEXTURE_2D_ARRAY_INDEX
,
1039 TEXTURE_1D_ARRAY_INDEX
,
1040 TEXTURE_EXTERNAL_INDEX
,
1051 * Bit flags for each type of texture object
1052 * Used for Texture.Unit[]._ReallyEnabled flags.
1055 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1056 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1057 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1058 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1059 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1060 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1061 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1062 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1063 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1064 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1065 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1066 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1071 * Texture image state. Drivers will typically create a subclass of this
1072 * with extra fields for memory buffers, etc.
1074 struct gl_texture_image
1076 GLint InternalFormat
; /**< Internal format as given by the user */
1077 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1078 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1079 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1080 * GL_DEPTH_STENCIL_EXT only. Used for
1081 * choosing TexEnv arithmetic.
1083 gl_format TexFormat
; /**< The actual texture memory format */
1085 GLuint Border
; /**< 0 or 1 */
1086 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1087 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1088 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1089 GLuint Width2
; /**< = Width - 2*Border */
1090 GLuint Height2
; /**< = Height - 2*Border */
1091 GLuint Depth2
; /**< = Depth - 2*Border */
1092 GLuint WidthLog2
; /**< = log2(Width2) */
1093 GLuint HeightLog2
; /**< = log2(Height2) */
1094 GLuint DepthLog2
; /**< = log2(Depth2) */
1095 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
1096 levels, computed from the dimensions */
1098 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1099 GLuint Level
; /**< Which mipmap level am I? */
1100 /** Cube map face: index into gl_texture_object::Image[] array */
1103 /** GL_ARB_texture_multisample */
1104 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
1105 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
1110 * Indexes for cube map faces.
1125 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1126 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1128 struct gl_sampler_object
1132 GLchar
*Label
; /**< GL_KHR_debug */
1134 GLenum WrapS
; /**< S-axis texture image wrap mode */
1135 GLenum WrapT
; /**< T-axis texture image wrap mode */
1136 GLenum WrapR
; /**< R-axis texture image wrap mode */
1137 GLenum MinFilter
; /**< minification filter */
1138 GLenum MagFilter
; /**< magnification filter */
1139 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
1140 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1141 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1142 GLfloat LodBias
; /**< OpenGL 1.4 */
1143 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1144 GLenum CompareMode
; /**< GL_ARB_shadow */
1145 GLenum CompareFunc
; /**< GL_ARB_shadow */
1146 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1147 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
1152 * Texture object state. Contains the array of mipmap images, border color,
1153 * wrap modes, filter modes, and shadow/texcompare state.
1155 struct gl_texture_object
1157 _glthread_Mutex Mutex
; /**< for thread safety */
1158 GLint RefCount
; /**< reference count */
1159 GLuint Name
; /**< the user-visible texture object ID */
1160 GLchar
*Label
; /**< GL_KHR_debug */
1161 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1163 struct gl_sampler_object Sampler
;
1165 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1167 GLfloat Priority
; /**< in [0,1] */
1168 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1169 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1170 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1171 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1172 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1173 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1174 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1175 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1176 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1177 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1178 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1179 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1180 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1181 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1183 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1185 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1186 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1188 /** GL_ARB_texture_buffer_object */
1189 struct gl_buffer_object
*BufferObject
;
1190 GLenum BufferObjectFormat
;
1191 /** Equivalent Mesa format for BufferObjectFormat. */
1192 gl_format _BufferObjectFormat
;
1193 /** GL_ARB_texture_buffer_range */
1194 GLintptr BufferOffset
;
1195 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1197 /** GL_OES_EGL_image_external */
1198 GLint RequiredTextureImageUnits
;
1202 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1203 #define MAX_COMBINER_TERMS 4
1207 * Texture combine environment state.
1209 struct gl_tex_env_combine_state
1211 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1212 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1213 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1214 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1215 GLenum SourceA
[MAX_COMBINER_TERMS
];
1216 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1217 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1218 GLenum OperandA
[MAX_COMBINER_TERMS
];
1219 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1220 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1221 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1222 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1227 * TexGenEnabled flags.
1234 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1239 * Bit flag versions of the corresponding GL_ constants.
1242 #define TEXGEN_SPHERE_MAP 0x1
1243 #define TEXGEN_OBJ_LINEAR 0x2
1244 #define TEXGEN_EYE_LINEAR 0x4
1245 #define TEXGEN_REFLECTION_MAP_NV 0x8
1246 #define TEXGEN_NORMAL_MAP_NV 0x10
1248 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1249 TEXGEN_REFLECTION_MAP_NV | \
1250 TEXGEN_NORMAL_MAP_NV)
1251 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1252 TEXGEN_REFLECTION_MAP_NV | \
1253 TEXGEN_NORMAL_MAP_NV | \
1259 /** Tex-gen enabled for texture unit? */
1260 #define ENABLE_TEXGEN(unit) (1 << (unit))
1262 /** Non-identity texture matrix for texture unit? */
1263 #define ENABLE_TEXMAT(unit) (1 << (unit))
1267 * Texture coord generation state.
1271 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1272 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1273 GLfloat ObjectPlane
[4];
1274 GLfloat EyePlane
[4];
1279 * Texture unit state. Contains enable flags, texture environment/function/
1280 * combiners, texgen state, and pointers to current texture objects.
1282 struct gl_texture_unit
1284 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1285 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1287 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1288 GLclampf EnvColor
[4];
1289 GLfloat EnvColorUnclamped
[4];
1291 struct gl_texgen GenS
;
1292 struct gl_texgen GenT
;
1293 struct gl_texgen GenR
;
1294 struct gl_texgen GenQ
;
1295 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1296 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1298 GLfloat LodBias
; /**< for biasing mipmap levels */
1300 GLfloat RotMatrix
[4]; /* 2x2 matrix */
1302 /** Current sampler object (GL_ARB_sampler_objects) */
1303 struct gl_sampler_object
*Sampler
;
1306 * \name GL_EXT_texture_env_combine
1308 struct gl_tex_env_combine_state Combine
;
1311 * Derived state based on \c EnvMode and the \c BaseFormat of the
1312 * currently enabled texture.
1314 struct gl_tex_env_combine_state _EnvMode
;
1317 * Currently enabled combiner state. This will point to either
1318 * \c Combine or \c _EnvMode.
1320 struct gl_tex_env_combine_state
*_CurrentCombine
;
1322 /** Current texture object pointers */
1323 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1325 /** Points to highest priority, complete and enabled texture object */
1326 struct gl_texture_object
*_Current
;
1331 * Texture attribute group (GL_TEXTURE_BIT).
1333 struct gl_texture_attrib
1335 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1336 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1338 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1340 /** GL_ARB_texture_buffer_object */
1341 struct gl_buffer_object
*BufferObject
;
1343 /** GL_ARB_seamless_cubemap */
1344 GLboolean CubeMapSeamless
;
1346 /** Texture units/samplers used by vertex or fragment texturing */
1347 GLbitfield _EnabledUnits
;
1349 /** Texture coord units/sets used for fragment texturing */
1350 GLbitfield _EnabledCoordUnits
;
1352 /** Texture coord units that have texgen enabled */
1353 GLbitfield _TexGenEnabled
;
1355 /** Texture coord units that have non-identity matrices */
1356 GLbitfield _TexMatEnabled
;
1358 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1359 GLbitfield _GenFlags
;
1364 * Data structure representing a single clip plane (e.g. one of the elements
1365 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1367 typedef GLfloat gl_clip_plane
[4];
1371 * Transformation attribute group (GL_TRANSFORM_BIT).
1373 struct gl_transform_attrib
1375 GLenum MatrixMode
; /**< Matrix mode */
1376 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1377 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1378 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1379 GLboolean Normalize
; /**< Normalize all normals? */
1380 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1381 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1382 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1384 GLfloat CullEyePos
[4];
1385 GLfloat CullObjPos
[4];
1390 * Viewport attribute group (GL_VIEWPORT_BIT).
1392 struct gl_viewport_attrib
1394 GLint X
, Y
; /**< position */
1395 GLsizei Width
, Height
; /**< size */
1396 GLfloat Near
, Far
; /**< Depth buffer range */
1397 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1402 * GL_ARB_vertex/pixel_buffer_object buffer object
1404 struct gl_buffer_object
1406 _glthread_Mutex Mutex
;
1409 GLchar
*Label
; /**< GL_KHR_debug */
1410 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1411 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1412 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1413 /** Fields describing a mapped buffer */
1415 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1416 GLvoid
*Pointer
; /**< User-space address of mapping */
1417 GLintptr Offset
; /**< Mapped offset */
1418 GLsizeiptr Length
; /**< Mapped length */
1420 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1421 GLboolean Written
; /**< Ever written to? (for debugging) */
1422 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1427 * Client pixel packing/unpacking attributes
1429 struct gl_pixelstore_attrib
1437 GLboolean SwapBytes
;
1439 GLboolean Invert
; /**< GL_MESA_pack_invert */
1440 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1445 * Client vertex array attributes
1447 struct gl_client_array
1449 GLint Size
; /**< components per element (1,2,3,4) */
1450 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1451 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1452 GLsizei Stride
; /**< user-specified stride */
1453 GLsizei StrideB
; /**< actual stride in bytes */
1454 const GLubyte
*Ptr
; /**< Points to array data */
1455 GLboolean Enabled
; /**< Enabled flag is a boolean */
1456 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1457 GLboolean Integer
; /**< Integer-valued? */
1458 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1459 GLuint _ElementSize
; /**< size of each element in bytes */
1461 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1462 GLuint _MaxElement
; /**< max element index into array buffer + 1 */
1467 * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
1468 * extension, but a nice encapsulation in any case.
1470 struct gl_array_object
1472 /** Name of the array object as received from glGenVertexArrayAPPLE. */
1474 GLchar
*Label
; /**< GL_KHR_debug */
1477 _glthread_Mutex Mutex
;
1480 * Does the VAO use ARB semantics or Apple semantics?
1482 * There are several ways in which ARB_vertex_array_object and
1483 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1486 * - ARB VAOs require that all array data be sourced from vertex buffer
1487 * objects, but Apple VAOs do not.
1489 * - ARB VAOs require that names come from GenVertexArrays.
1491 * This flag notes which behavior governs this VAO.
1493 GLboolean ARBsemantics
;
1496 * Has this array object been bound?
1498 GLboolean EverBound
;
1500 /** Vertex attribute arrays */
1501 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
];
1503 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1504 GLbitfield64 _Enabled
;
1507 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1508 * we can determine the max legal (in bounds) glDrawElements array index.
1512 struct gl_buffer_object
*ElementArrayBufferObj
;
1517 * Vertex array state
1519 struct gl_array_attrib
1521 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1522 struct gl_array_object
*ArrayObj
;
1524 /** The default vertex array object */
1525 struct gl_array_object
*DefaultArrayObj
;
1527 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1528 struct _mesa_HashTable
*Objects
;
1530 GLint ActiveTexture
; /**< Client Active Texture */
1531 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1532 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1535 * \name Primitive restart controls
1537 * Primitive restart is enabled if either \c PrimitiveRestart or
1538 * \c PrimitiveRestartFixedIndex is set.
1541 GLboolean PrimitiveRestart
;
1542 GLboolean PrimitiveRestartFixedIndex
;
1543 GLboolean _PrimitiveRestart
;
1544 GLuint RestartIndex
;
1547 /* GL_ARB_vertex_buffer_object */
1548 struct gl_buffer_object
*ArrayBufferObj
;
1551 * Vertex arrays as consumed by a driver.
1552 * The array pointer is set up only by the VBO module.
1554 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1559 * Feedback buffer state
1564 GLbitfield _Mask
; /**< FB_* bits */
1572 * Selection buffer state
1576 GLuint
*Buffer
; /**< selection buffer */
1577 GLuint BufferSize
; /**< size of the selection buffer */
1578 GLuint BufferCount
; /**< number of values in the selection buffer */
1579 GLuint Hits
; /**< number of records in the selection buffer */
1580 GLuint NameStackDepth
; /**< name stack depth */
1581 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1582 GLboolean HitFlag
; /**< hit flag */
1583 GLfloat HitMinZ
; /**< minimum hit depth */
1584 GLfloat HitMaxZ
; /**< maximum hit depth */
1589 * 1-D Evaluator control points
1593 GLuint Order
; /**< Number of control points */
1594 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1595 GLfloat
*Points
; /**< Points to contiguous control points */
1600 * 2-D Evaluator control points
1604 GLuint Uorder
; /**< Number of control points in U dimension */
1605 GLuint Vorder
; /**< Number of control points in V dimension */
1608 GLfloat
*Points
; /**< Points to contiguous control points */
1613 * All evaluator control point state
1615 struct gl_evaluators
1621 struct gl_1d_map Map1Vertex3
;
1622 struct gl_1d_map Map1Vertex4
;
1623 struct gl_1d_map Map1Index
;
1624 struct gl_1d_map Map1Color4
;
1625 struct gl_1d_map Map1Normal
;
1626 struct gl_1d_map Map1Texture1
;
1627 struct gl_1d_map Map1Texture2
;
1628 struct gl_1d_map Map1Texture3
;
1629 struct gl_1d_map Map1Texture4
;
1636 struct gl_2d_map Map2Vertex3
;
1637 struct gl_2d_map Map2Vertex4
;
1638 struct gl_2d_map Map2Index
;
1639 struct gl_2d_map Map2Color4
;
1640 struct gl_2d_map Map2Normal
;
1641 struct gl_2d_map Map2Texture1
;
1642 struct gl_2d_map Map2Texture2
;
1643 struct gl_2d_map Map2Texture3
;
1644 struct gl_2d_map Map2Texture4
;
1649 struct gl_transform_feedback_varying_info
1658 * Per-output info vertex shaders for transform feedback.
1660 struct gl_transform_feedback_output
1662 unsigned OutputRegister
;
1663 unsigned OutputBuffer
;
1664 unsigned NumComponents
;
1666 /** offset (in DWORDs) of this output within the interleaved structure */
1670 * Offset into the output register of the data to output. For example,
1671 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1672 * offset is in the y and z components of the output register.
1674 unsigned ComponentOffset
;
1678 /** Post-link transform feedback info. */
1679 struct gl_transform_feedback_info
1681 unsigned NumOutputs
;
1684 * Number of transform feedback buffers in use by this program.
1686 unsigned NumBuffers
;
1688 struct gl_transform_feedback_output
*Outputs
;
1690 /** Transform feedback varyings used for the linking of this shader program.
1692 * Use for glGetTransformFeedbackVarying().
1694 struct gl_transform_feedback_varying_info
*Varyings
;
1698 * Total number of components stored in each buffer. This may be used by
1699 * hardware back-ends to determine the correct stride when interleaving
1700 * multiple transform feedback outputs in the same buffer.
1702 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1707 * Transform feedback object state
1709 struct gl_transform_feedback_object
1711 GLuint Name
; /**< AKA the object ID */
1712 GLchar
*Label
; /**< GL_KHR_debug */
1714 GLboolean Active
; /**< Is transform feedback enabled? */
1715 GLboolean Paused
; /**< Is transform feedback paused? */
1716 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1718 GLboolean EverBound
; /**< Has this object been bound? */
1721 * GLES: if Active is true, remaining number of primitives which can be
1722 * rendered without overflow. This is necessary to track because GLES
1723 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1724 * glDrawArraysInstanced would overflow transform feedback buffers.
1725 * Undefined if Active is false.
1727 * Not tracked for desktop GL since it's unnecessary.
1729 unsigned GlesRemainingPrims
;
1731 /** The feedback buffers */
1732 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1733 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1735 /** Start of feedback data in dest buffer */
1736 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1739 * Max data to put into dest buffer (in bytes). Computed based on
1740 * RequestedSize and the actual size of the buffer.
1742 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1745 * Size that was specified when the buffer was bound. If the buffer was
1746 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1749 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1754 * Context state for transform feedback.
1756 struct gl_transform_feedback_state
1758 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1760 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1761 struct gl_buffer_object
*CurrentBuffer
;
1763 /** The table of all transform feedback objects */
1764 struct _mesa_HashTable
*Objects
;
1766 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1767 struct gl_transform_feedback_object
*CurrentObject
;
1769 /** The default xform-fb object (Name==0) */
1770 struct gl_transform_feedback_object
*DefaultObject
;
1775 * Names of the various vertex/fragment program register files, etc.
1777 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1778 * All values should fit in a 4-bit field.
1780 * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR,
1781 * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1782 * be "uniform" variables since they can only be set outside glBegin/End.
1783 * They're also all stored in the same Parameters array.
1787 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1788 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1789 PROGRAM_INPUT
, /**< machine->Inputs[] */
1790 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1791 PROGRAM_LOCAL_PARAM
, /**< gl_program->LocalParams[] */
1792 PROGRAM_ENV_PARAM
, /**< gl_program->Parameters[] */
1793 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1794 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1795 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1796 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1797 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1798 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1799 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1800 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1806 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1807 * one of these values.
1811 SYSTEM_VALUE_FRONT_FACE
, /**< Fragment shader only (not done yet) */
1812 SYSTEM_VALUE_VERTEX_ID
, /**< Vertex shader only */
1813 SYSTEM_VALUE_INSTANCE_ID
, /**< Vertex shader only */
1814 SYSTEM_VALUE_MAX
/**< Number of values */
1819 * The possible interpolation qualifiers that can be applied to a fragment
1820 * shader input in GLSL.
1822 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
1823 * gl_fragment_program data structure to 0 causes the default behavior.
1825 enum glsl_interp_qualifier
1827 INTERP_QUALIFIER_NONE
= 0,
1828 INTERP_QUALIFIER_SMOOTH
,
1829 INTERP_QUALIFIER_FLAT
,
1830 INTERP_QUALIFIER_NOPERSPECTIVE
,
1831 INTERP_QUALIFIER_COUNT
/**< Number of interpolation qualifiers */
1836 * \brief Layout qualifiers for gl_FragDepth.
1838 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
1839 * a layout qualifier.
1841 * \see enum ir_depth_layout
1843 enum gl_frag_depth_layout
1845 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
1846 FRAG_DEPTH_LAYOUT_ANY
,
1847 FRAG_DEPTH_LAYOUT_GREATER
,
1848 FRAG_DEPTH_LAYOUT_LESS
,
1849 FRAG_DEPTH_LAYOUT_UNCHANGED
1854 * Base class for any kind of program object
1859 GLubyte
*String
; /**< Null-terminated program text */
1861 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1862 GLenum Format
; /**< String encoding format */
1864 struct prog_instruction
*Instructions
;
1866 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1867 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1868 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1869 GLbitfield InputFlags
[MAX_PROGRAM_INPUTS
]; /**< PROG_PARAM_BIT_x flags */
1870 GLbitfield OutputFlags
[MAX_PROGRAM_OUTPUTS
]; /**< PROG_PARAM_BIT_x flags */
1871 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1872 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1873 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1876 /** Named parameters, constants, etc. from program text */
1877 struct gl_program_parameter_list
*Parameters
;
1878 /** Numbered local parameters */
1879 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1881 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1882 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1884 /** Bitmask of which register files are read/written with indirect
1885 * addressing. Mask of (1 << PROGRAM_x) bits.
1887 GLbitfield IndirectRegisterFiles
;
1889 /** Logical counts */
1891 GLuint NumInstructions
;
1892 GLuint NumTemporaries
;
1893 GLuint NumParameters
;
1894 GLuint NumAttributes
;
1895 GLuint NumAddressRegs
;
1896 GLuint NumAluInstructions
;
1897 GLuint NumTexInstructions
;
1898 GLuint NumTexIndirections
;
1900 /** Native, actual h/w counts */
1902 GLuint NumNativeInstructions
;
1903 GLuint NumNativeTemporaries
;
1904 GLuint NumNativeParameters
;
1905 GLuint NumNativeAttributes
;
1906 GLuint NumNativeAddressRegs
;
1907 GLuint NumNativeAluInstructions
;
1908 GLuint NumNativeTexInstructions
;
1909 GLuint NumNativeTexIndirections
;
1914 /** Vertex program object */
1915 struct gl_vertex_program
1917 struct gl_program Base
; /**< base class */
1918 GLboolean IsPositionInvariant
;
1919 GLboolean UsesClipDistance
;
1923 /** Geometry program object */
1924 struct gl_geometry_program
1926 struct gl_program Base
; /**< base class */
1930 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1931 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1932 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1933 GLboolean UsesClipDistance
;
1937 /** Fragment program object */
1938 struct gl_fragment_program
1940 struct gl_program Base
; /**< base class */
1941 GLboolean UsesKill
; /**< shader uses KIL instruction */
1942 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
1943 GLboolean OriginUpperLeft
;
1944 GLboolean PixelCenterInteger
;
1945 enum gl_frag_depth_layout FragDepthLayout
;
1948 * GLSL interpolation qualifier associated with each fragment shader input.
1949 * For inputs that do not have an interpolation qualifier specified in
1950 * GLSL, the value is INTERP_QUALIFIER_NONE.
1952 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
1955 * Bitfield indicating, for each fragment shader input, 1 if that input
1956 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
1958 GLbitfield64 IsCentroid
;
1963 * State common to vertex and fragment programs.
1965 struct gl_program_state
1967 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1968 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1973 * Context state for vertex programs.
1975 struct gl_vertex_program_state
1977 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1978 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
1979 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1980 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1981 /** Computed two sided lighting for fixed function/programs. */
1982 GLboolean _TwoSideEnabled
;
1983 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
1985 /** Currently enabled and valid vertex program (including internal
1986 * programs, user-defined vertex programs and GLSL vertex shaders).
1987 * This is the program we must use when rendering.
1989 struct gl_vertex_program
*_Current
;
1991 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
1993 /** Should fixed-function T&L be implemented with a vertex prog? */
1994 GLboolean _MaintainTnlProgram
;
1996 /** Program to emulate fixed-function T&L (see above) */
1997 struct gl_vertex_program
*_TnlProgram
;
1999 /** Cache of fixed-function programs */
2000 struct gl_program_cache
*Cache
;
2002 GLboolean _Overriden
;
2007 * Context state for geometry programs.
2009 struct gl_geometry_program_state
2011 GLboolean Enabled
; /**< GL_ARB_GEOMETRY_SHADER4 */
2012 GLboolean _Enabled
; /**< Enabled and valid program? */
2013 struct gl_geometry_program
*Current
; /**< user-bound geometry program */
2015 /** Currently enabled and valid program (including internal programs
2016 * and compiled shader programs).
2018 struct gl_geometry_program
*_Current
;
2020 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2022 /** Cache of fixed-function programs */
2023 struct gl_program_cache
*Cache
;
2027 * Context state for fragment programs.
2029 struct gl_fragment_program_state
2031 GLboolean Enabled
; /**< User-set fragment program enable flag */
2032 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2033 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2035 /** Currently enabled and valid fragment program (including internal
2036 * programs, user-defined fragment programs and GLSL fragment shaders).
2037 * This is the program we must use when rendering.
2039 struct gl_fragment_program
*_Current
;
2041 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2043 /** Should fixed-function texturing be implemented with a fragment prog? */
2044 GLboolean _MaintainTexEnvProgram
;
2046 /** Program to emulate fixed-function texture env/combine (see above) */
2047 struct gl_fragment_program
*_TexEnvProgram
;
2049 /** Cache of fixed-function programs */
2050 struct gl_program_cache
*Cache
;
2055 * ATI_fragment_shader runtime state
2057 #define ATI_FS_INPUT_PRIMARY 0
2058 #define ATI_FS_INPUT_SECONDARY 1
2060 struct atifs_instruction
;
2061 struct atifs_setupinst
;
2064 * ATI fragment shader
2066 struct ati_fragment_shader
2070 struct atifs_instruction
*Instructions
[2];
2071 struct atifs_setupinst
*SetupInst
[2];
2072 GLfloat Constants
[8][4];
2073 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2074 GLubyte numArithInstr
[2];
2075 GLubyte regsAssigned
[2];
2076 GLubyte NumPasses
; /**< 1 or 2 */
2078 GLubyte last_optype
;
2079 GLboolean interpinp1
;
2085 * Context state for GL_ATI_fragment_shader
2087 struct gl_ati_fragment_shader_state
2090 GLboolean _Enabled
; /**< enabled and valid shader? */
2091 GLboolean Compiling
;
2092 GLfloat GlobalConstants
[8][4];
2093 struct ati_fragment_shader
*Current
;
2097 /** Set by #pragma directives */
2098 struct gl_sl_pragmas
2100 GLboolean IgnoreOptimize
; /**< ignore #pragma optimize(on/off) ? */
2101 GLboolean IgnoreDebug
; /**< ignore #pragma debug(on/off) ? */
2102 GLboolean Optimize
; /**< defaults on */
2103 GLboolean Debug
; /**< defaults off */
2108 * A GLSL vertex or fragment shader object.
2112 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2113 * Must be the first field.
2116 GLuint Name
; /**< AKA the handle */
2117 GLchar
*Label
; /**< GL_KHR_debug */
2118 GLint RefCount
; /**< Reference count */
2119 GLboolean DeletePending
;
2120 GLboolean CompileStatus
;
2121 const GLchar
*Source
; /**< Source code string */
2122 GLuint SourceChecksum
; /**< for debug/logging purposes */
2123 struct gl_program
*Program
; /**< Post-compile assembly code */
2125 struct gl_sl_pragmas Pragmas
;
2127 unsigned Version
; /**< GLSL version used for linking */
2128 GLboolean IsES
; /**< True if this shader uses GLSL ES */
2131 * \name Sampler tracking
2133 * \note Each of these fields is only set post-linking.
2136 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2137 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2138 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2142 * Map from sampler unit to texture unit (set by glUniform1i())
2144 * A sampler unit is associated with each sampler uniform by the linker.
2145 * The sampler unit associated with each uniform is stored in the
2146 * \c gl_uniform_storage::sampler field.
2148 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2149 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2150 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2153 * Number of default uniform block components used by this shader.
2155 * This field is only set post-linking.
2157 unsigned num_uniform_components
;
2160 * Number of combined uniform components used by this shader.
2162 * This field is only set post-linking. It is the sum of the uniform block
2163 * sizes divided by sizeof(float), and num_uniform_compoennts.
2165 unsigned num_combined_uniform_components
;
2168 * This shader's uniform block information.
2170 * The offsets of the variables are assigned only for shaders in a program's
2173 struct gl_uniform_block
*UniformBlocks
;
2174 unsigned NumUniformBlocks
;
2176 struct exec_list
*ir
;
2177 struct glsl_symbol_table
*symbols
;
2179 /** Shaders containing built-in functions that are used for linking. */
2180 struct gl_shader
*builtins_to_link
[16];
2181 unsigned num_builtins_to_link
;
2184 * Geometry shader state from GLSL 1.50 layout qualifiers.
2189 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2190 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2195 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2196 * it's not set in this shader.
2204 * Shader stages. Note that these will become 5 with tessellation.
2206 * The order must match how shaders are ordered in the pipeline.
2207 * The GLSL linker assumes that if i<j, then the j-th shader is
2208 * executed later than the i-th shader.
2212 MESA_SHADER_VERTEX
= 0,
2213 MESA_SHADER_GEOMETRY
= 1,
2214 MESA_SHADER_FRAGMENT
= 2,
2215 MESA_SHADER_TYPES
= 3
2219 struct gl_uniform_buffer_variable
2224 * Name of the uniform as seen by glGetUniformIndices.
2226 * glGetUniformIndices requires that the block instance index \b not be
2227 * present in the name of queried uniforms.
2230 * \c gl_uniform_buffer_variable::IndexName and
2231 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2235 const struct glsl_type
*Type
;
2236 unsigned int Offset
;
2241 enum gl_uniform_block_packing
2249 struct gl_uniform_block
2251 /** Declared name of the uniform block */
2254 /** Array of supplemental information about UBO ir_variables. */
2255 struct gl_uniform_buffer_variable
*Uniforms
;
2259 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2260 * with glBindBufferBase to bind a buffer object to this uniform block. When
2261 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2266 * Minimum size of a buffer object to back this uniform buffer
2267 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2269 GLuint UniformBufferSize
;
2272 * Layout specified in the shader
2274 * This isn't accessible through the API, but it is used while
2275 * cross-validating uniform blocks.
2277 enum gl_uniform_block_packing _Packing
;
2282 * A GLSL program object.
2283 * Basically a linked collection of vertex and fragment shaders.
2285 struct gl_shader_program
2287 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2288 GLuint Name
; /**< aka handle or ID */
2289 GLchar
*Label
; /**< GL_KHR_debug */
2290 GLint RefCount
; /**< Reference count */
2291 GLboolean DeletePending
;
2294 * Is the application intending to glGetProgramBinary this program?
2296 GLboolean BinaryRetreivableHint
;
2299 * Flags that the linker should not reject the program if it lacks
2300 * a vertex or fragment shader. GLES2 doesn't allow separate
2301 * shader objects, and would reject them. However, we internally
2302 * build separate shader objects for fixed function programs, which
2303 * we use for drivers/common/meta.c and for handling
2304 * _mesa_update_state with no program bound (for example in
2307 GLboolean InternalSeparateShader
;
2309 GLuint NumShaders
; /**< number of attached shaders */
2310 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2313 * User-defined attribute bindings
2315 * These are set via \c glBindAttribLocation and are used to direct the
2316 * GLSL linker. These are \b not the values used in the compiled shader,
2317 * and they are \b not the values returned by \c glGetAttribLocation.
2319 struct string_to_uint_map
*AttributeBindings
;
2322 * User-defined fragment data bindings
2324 * These are set via \c glBindFragDataLocation and are used to direct the
2325 * GLSL linker. These are \b not the values used in the compiled shader,
2326 * and they are \b not the values returned by \c glGetFragDataLocation.
2328 struct string_to_uint_map
*FragDataBindings
;
2329 struct string_to_uint_map
*FragDataIndexBindings
;
2332 * Transform feedback varyings last specified by
2333 * glTransformFeedbackVaryings().
2335 * For the current set of transform feeedback varyings used for transform
2336 * feedback output, see LinkedTransformFeedback.
2341 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2342 } TransformFeedback
;
2344 /** Post-link transform feedback info. */
2345 struct gl_transform_feedback_info LinkedTransformFeedback
;
2347 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2348 enum gl_frag_depth_layout FragDepthLayout
;
2351 * Geometry shader state - copied into gl_geometry_program by
2352 * _mesa_copy_linked_program_data().
2357 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2358 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2359 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2361 * True if gl_ClipDistance is written to. Copied into
2362 * gl_geometry_program by _mesa_copy_linked_program_data().
2364 GLboolean UsesClipDistance
;
2365 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2366 0 if not present. */
2369 /** Vertex shader state */
2372 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2373 * by _mesa_copy_linked_program_data().
2375 GLboolean UsesClipDistance
;
2376 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2377 0 if not present. */
2380 /* post-link info: */
2381 unsigned NumUserUniformStorage
;
2382 struct gl_uniform_storage
*UniformStorage
;
2384 struct gl_uniform_block
*UniformBlocks
;
2385 unsigned NumUniformBlocks
;
2388 * Scale factor for the uniform base location
2390 * This is used to generate locations (returned by \c glGetUniformLocation)
2391 * of uniforms. The base location of the uniform is multiplied by this
2392 * value, and the array index is added.
2398 * _mesa_uniform_merge_location_offset, _mesa_uniform_split_location_offset
2400 unsigned UniformLocationBaseScale
;
2403 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2404 * they're used in, or -1.
2406 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2407 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2409 int *UniformBlockStageIndex
[MESA_SHADER_TYPES
];
2412 * Map of active uniform names to locations
2414 * Maps any active uniform that is not an array element to a location.
2415 * Each active uniform, including individual structure members will appear
2416 * in this map. This roughly corresponds to the set of names that would be
2417 * enumerated by \c glGetActiveUniform.
2419 struct string_to_uint_map
*UniformHash
;
2421 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2422 GLboolean Validated
;
2423 GLboolean _Used
; /**< Ever used for drawing? */
2426 unsigned Version
; /**< GLSL version used for linking */
2427 GLboolean IsES
; /**< True if this program uses GLSL ES */
2430 * Per-stage shaders resulting from the first stage of linking.
2432 * Set of linked shaders for this program. The array is accessed using the
2433 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2436 struct gl_shader
*_LinkedShaders
[MESA_SHADER_TYPES
];
2440 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2441 #define GLSL_LOG 0x2 /**< Write shaders to files */
2442 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2443 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2444 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2445 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2446 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2447 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2448 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2449 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2453 * Context state for GLSL vertex/fragment shaders.
2455 struct gl_shader_state
2458 * Programs used for rendering
2460 * There is a separate program set for each shader stage. If
2461 * GL_EXT_separate_shader_objects is not supported, each of these must point
2462 * to \c NULL or to the same program.
2464 struct gl_shader_program
*CurrentVertexProgram
;
2465 struct gl_shader_program
*CurrentGeometryProgram
;
2466 struct gl_shader_program
*CurrentFragmentProgram
;
2468 struct gl_shader_program
*_CurrentFragmentProgram
;
2471 * Program used by glUniform calls.
2473 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2475 struct gl_shader_program
*ActiveProgram
;
2477 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2482 * Compiler options for a single GLSL shaders type
2484 struct gl_shader_compiler_options
2486 /** Driver-selectable options: */
2487 GLboolean EmitCondCodes
; /**< Use condition codes? */
2488 GLboolean EmitNoLoops
;
2489 GLboolean EmitNoFunctions
;
2490 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2491 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2492 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2493 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2494 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2497 * \name Forms of indirect addressing the driver cannot do.
2500 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2501 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2502 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2503 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2506 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2507 GLuint MaxUnrollIterations
;
2510 * Prefer DP4 instructions (rather than MUL/MAD) for matrix * vector
2511 * operations, such as position transformation.
2513 GLboolean PreferDP4
;
2515 struct gl_sl_pragmas DefaultPragmas
; /**< Default #pragma settings */
2520 * Occlusion/timer query object.
2522 struct gl_query_object
2524 GLenum Target
; /**< The query target, when active */
2525 GLuint Id
; /**< hash table ID/name */
2526 GLchar
*Label
; /**< GL_KHR_debug */
2527 GLuint64EXT Result
; /**< the counter */
2528 GLboolean Active
; /**< inside Begin/EndQuery */
2529 GLboolean Ready
; /**< result is ready? */
2530 GLboolean EverBound
;/**< has query object ever been bound */
2535 * Context state for query objects.
2537 struct gl_query_state
2539 struct _mesa_HashTable
*QueryObjects
;
2540 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2541 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2543 /** GL_NV_conditional_render */
2544 struct gl_query_object
*CondRenderQuery
;
2546 /** GL_EXT_transform_feedback */
2547 struct gl_query_object
*PrimitivesGenerated
;
2548 struct gl_query_object
*PrimitivesWritten
;
2550 /** GL_ARB_timer_query */
2551 struct gl_query_object
*TimeElapsed
;
2553 GLenum CondRenderMode
;
2557 /** Sync object state */
2558 struct gl_sync_object
2560 GLenum Type
; /**< GL_SYNC_FENCE */
2561 GLuint Name
; /**< Fence name */
2562 GLchar
*Label
; /**< GL_KHR_debug */
2563 GLint RefCount
; /**< Reference count */
2564 GLboolean DeletePending
; /**< Object was deleted while there were still
2565 * live references (e.g., sync not yet finished)
2567 GLenum SyncCondition
;
2568 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2569 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2574 * State which can be shared by multiple contexts:
2576 struct gl_shared_state
2578 _glthread_Mutex Mutex
; /**< for thread safety */
2579 GLint RefCount
; /**< Reference count */
2580 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2581 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2583 /** Default texture objects (shared by all texture units) */
2584 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2586 /** Fallback texture used when a bound texture is incomplete */
2587 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2590 * \name Thread safety and statechange notification for texture
2593 * \todo Improve the granularity of locking.
2596 _glthread_Mutex TexMutex
; /**< texobj thread safety */
2597 GLuint TextureStateStamp
; /**< state notification for shared tex */
2600 /** Default buffer object for vertex arrays that aren't in VBOs */
2601 struct gl_buffer_object
*NullBufferObj
;
2604 * \name Vertex/geometry/fragment programs
2607 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2608 struct gl_vertex_program
*DefaultVertexProgram
;
2609 struct gl_fragment_program
*DefaultFragmentProgram
;
2610 struct gl_geometry_program
*DefaultGeometryProgram
;
2613 /* GL_ATI_fragment_shader */
2614 struct _mesa_HashTable
*ATIShaders
;
2615 struct ati_fragment_shader
*DefaultFragmentShader
;
2617 struct _mesa_HashTable
*BufferObjects
;
2619 /** Table of both gl_shader and gl_shader_program objects */
2620 struct _mesa_HashTable
*ShaderObjects
;
2622 /* GL_EXT_framebuffer_object */
2623 struct _mesa_HashTable
*RenderBuffers
;
2624 struct _mesa_HashTable
*FrameBuffers
;
2627 struct set
*SyncObjects
;
2629 /** GL_ARB_sampler_objects */
2630 struct _mesa_HashTable
*SamplerObjects
;
2636 * Renderbuffers represent drawing surfaces such as color, depth and/or
2637 * stencil. A framebuffer object has a set of renderbuffers.
2638 * Drivers will typically derive subclasses of this type.
2640 struct gl_renderbuffer
2642 _glthread_Mutex Mutex
; /**< for thread safety */
2643 GLuint ClassID
; /**< Useful for drivers */
2645 GLchar
*Label
; /**< GL_KHR_debug */
2647 GLuint Width
, Height
;
2649 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2650 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2652 * True for renderbuffers that wrap textures, giving the driver a chance to
2653 * flush render caches through the FinishRenderTexture hook.
2655 * Drivers may also set this on renderbuffers other than those generated by
2656 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2657 * called without a rb->TexImage.
2659 GLboolean NeedsFinishRenderTexture
;
2661 GLenum InternalFormat
; /**< The user-specified format */
2662 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2663 GL_STENCIL_INDEX. */
2664 gl_format Format
; /**< The actual renderbuffer memory format */
2666 * Pointer to the texture image if this renderbuffer wraps a texture,
2669 * Note that the reference on the gl_texture_object containing this
2670 * TexImage is held by the gl_renderbuffer_attachment.
2672 struct gl_texture_image
*TexImage
;
2674 /** Delete this renderbuffer */
2675 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
2677 /** Allocate new storage for this renderbuffer */
2678 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
2679 struct gl_renderbuffer
*rb
,
2680 GLenum internalFormat
,
2681 GLuint width
, GLuint height
);
2686 * A renderbuffer attachment points to either a texture object (and specifies
2687 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2689 struct gl_renderbuffer_attachment
2691 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2695 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2696 * application supplied renderbuffer object.
2698 struct gl_renderbuffer
*Renderbuffer
;
2701 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2702 * supplied texture object.
2704 struct gl_texture_object
*Texture
;
2705 GLuint TextureLevel
; /**< Attached mipmap level. */
2706 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2707 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2708 * and 2D array textures */
2714 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2715 * In C++ terms, think of this as a base class from which device drivers
2716 * will make derived classes.
2718 struct gl_framebuffer
2720 _glthread_Mutex Mutex
; /**< for thread safety */
2722 * If zero, this is a window system framebuffer. If non-zero, this
2723 * is a FBO framebuffer; note that for some devices (i.e. those with
2724 * a natural pixel coordinate system for FBOs that differs from the
2725 * OpenGL/Mesa coordinate system), this means that the viewport,
2726 * polygon face orientation, and polygon stipple will have to be inverted.
2729 GLchar
*Label
; /**< GL_KHR_debug */
2732 GLboolean DeletePending
;
2735 * The framebuffer's visual. Immutable if this is a window system buffer.
2736 * Computed from attachments if user-made FBO.
2738 struct gl_config Visual
;
2740 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2742 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2744 GLint _Xmin
, _Xmax
; /**< inclusive */
2745 GLint _Ymin
, _Ymax
; /**< exclusive */
2748 /** \name Derived Z buffer stuff */
2750 GLuint _DepthMax
; /**< Max depth buffer value */
2751 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2752 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2755 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2758 /** Integer color values */
2759 GLboolean _IntegerColor
;
2761 /* ARB_color_buffer_float */
2762 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
2763 GLboolean _HasSNormOrFloatColorBuffer
;
2765 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2766 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2768 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2769 * attribute group and GL_PIXEL attribute group, respectively.
2771 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2772 GLenum ColorReadBuffer
;
2774 /** Computed from ColorDraw/ReadBuffer above */
2775 GLuint _NumColorDrawBuffers
;
2776 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
2777 GLint _ColorReadBufferIndex
; /* -1 = None */
2778 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2779 struct gl_renderbuffer
*_ColorReadBuffer
;
2783 /** Delete this framebuffer */
2784 void (*Delete
)(struct gl_framebuffer
*fb
);
2789 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
2793 GLushort RangeMin
; /**< min value exponent */
2794 GLushort RangeMax
; /**< max value exponent */
2795 GLushort Precision
; /**< number of mantissa bits */
2800 * Limits for vertex, geometry and fragment programs/shaders.
2802 struct gl_program_constants
2804 /* logical limits */
2805 GLuint MaxInstructions
;
2806 GLuint MaxAluInstructions
;
2807 GLuint MaxTexInstructions
;
2808 GLuint MaxTexIndirections
;
2811 GLuint MaxAddressRegs
;
2812 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2813 GLuint MaxParameters
;
2814 GLuint MaxLocalParams
;
2815 GLuint MaxEnvParams
;
2816 /* native/hardware limits */
2817 GLuint MaxNativeInstructions
;
2818 GLuint MaxNativeAluInstructions
;
2819 GLuint MaxNativeTexInstructions
;
2820 GLuint MaxNativeTexIndirections
;
2821 GLuint MaxNativeAttribs
;
2822 GLuint MaxNativeTemps
;
2823 GLuint MaxNativeAddressRegs
;
2824 GLuint MaxNativeParameters
;
2826 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
2827 /* ES 2.0 and GL_ARB_ES2_compatibility */
2828 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
2829 struct gl_precision LowInt
, MediumInt
, HighInt
;
2830 /* GL_ARB_uniform_buffer_object */
2831 GLuint MaxUniformBlocks
;
2832 GLuint MaxCombinedUniformComponents
;
2833 GLuint MaxTextureImageUnits
;
2838 * Constants which may be overridden by device driver during context creation
2839 * but are never changed after that.
2843 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
2844 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
2845 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
2846 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
2847 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
2848 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
2849 GLuint MaxTextureCoordUnits
;
2850 GLuint MaxCombinedTextureImageUnits
;
2851 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
2852 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
2853 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
2854 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
2856 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
2858 GLuint MaxArrayLockSize
;
2862 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
2863 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
2864 GLfloat PointSizeGranularity
;
2865 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
2866 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
2867 GLfloat LineWidthGranularity
;
2869 GLuint MaxClipPlanes
;
2871 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
2872 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
2874 GLuint MaxViewportWidth
, MaxViewportHeight
;
2876 struct gl_program_constants VertexProgram
; /**< GL_ARB_vertex_program */
2877 struct gl_program_constants FragmentProgram
; /**< GL_ARB_fragment_program */
2878 struct gl_program_constants GeometryProgram
; /**< GL_ARB_geometry_shader4 */
2879 GLuint MaxProgramMatrices
;
2880 GLuint MaxProgramMatrixStackDepth
;
2883 GLuint SamplesPassed
;
2886 GLuint PrimitivesGenerated
;
2887 GLuint PrimitivesWritten
;
2890 /** vertex array / buffer object bounds checking */
2891 GLboolean CheckArrayBounds
;
2893 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
2895 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
2896 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
2897 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
2899 /** Number of varying vectors between any two shader stages. */
2901 GLuint MaxVaryingComponents
;
2904 * GL_ARB_uniform_buffer_object
2906 GLuint MaxCombinedUniformBlocks
;
2907 GLuint MaxUniformBufferBindings
;
2908 GLuint MaxUniformBlockSize
;
2909 GLuint UniformBufferOffsetAlignment
;
2912 /** GL_ARB_geometry_shader4 */
2913 GLuint MaxGeometryOutputVertices
;
2914 GLuint MaxGeometryTotalOutputComponents
;
2916 GLuint GLSLVersion
; /**< GLSL version supported (ex: 120 = 1.20) */
2919 * Changes default GLSL extension behavior from "error" to "warn". It's out
2920 * of spec, but it can make some apps work that otherwise wouldn't.
2922 GLboolean ForceGLSLExtensionsWarn
;
2925 * If non-zero, forces GLSL shaders without the #version directive to behave
2926 * as if they began with "#version ForceGLSLVersion".
2928 GLuint ForceGLSLVersion
;
2931 * Does the driver support real 32-bit integers? (Otherwise, integers are
2932 * simulated via floats.)
2934 GLboolean NativeIntegers
;
2937 * If the driver supports real 32-bit integers, what integer value should be
2938 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
2940 GLuint UniformBooleanTrue
;
2942 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2943 GLbitfield SupportedBumpUnits
;
2946 * Maximum amount of time, measured in nanseconds, that the server can wait.
2948 GLuint64 MaxServerWaitTimeout
;
2950 /** GL_EXT_provoking_vertex */
2951 GLboolean QuadsFollowProvokingVertexConvention
;
2953 /** OpenGL version 3.0 */
2954 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2956 /** OpenGL version 3.2 */
2957 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
2959 /** GL_EXT_transform_feedback */
2960 GLuint MaxTransformFeedbackBuffers
;
2961 GLuint MaxTransformFeedbackSeparateComponents
;
2962 GLuint MaxTransformFeedbackInterleavedComponents
;
2963 GLuint MaxVertexStreams
;
2965 /** GL_EXT_gpu_shader4 */
2966 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
2968 /* GL_ARB_robustness */
2969 GLenum ResetStrategy
;
2971 /* GL_ARB_blend_func_extended */
2972 GLuint MaxDualSourceDrawBuffers
;
2975 * Whether the implementation strips out and ignores texture borders.
2977 * Many GPU hardware implementations don't support rendering with texture
2978 * borders and mipmapped textures. (Note: not static border color, but the
2979 * old 1-pixel border around each edge). Implementations then have to do
2980 * slow fallbacks to be correct, or just ignore the border and be fast but
2981 * wrong. Setting the flag strips the border off of TexImage calls,
2982 * providing "fast but wrong" at significantly reduced driver complexity.
2984 * Texture borders are deprecated in GL 3.0.
2986 GLboolean StripTextureBorder
;
2989 * For drivers which can do a better job at eliminating unused uniforms
2990 * than the GLSL compiler.
2992 * XXX Remove these as soon as a better solution is available.
2994 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
2997 * Force software support for primitive restart in the VBO module.
2999 GLboolean PrimitiveRestartInSoftware
;
3001 /** GL_ARB_map_buffer_alignment */
3002 GLuint MinMapBufferAlignment
;
3005 * Disable varying packing. This is out of spec, but potentially useful
3006 * for older platforms that supports a limited number of texture
3007 * indirections--on these platforms, unpacking the varyings in the fragment
3008 * shader increases the number of texture indirections by 1, which might
3009 * make some shaders not executable at all.
3011 * Drivers that support transform feedback must set this value to GL_FALSE.
3013 GLboolean DisableVaryingPacking
;
3016 * Maximum value supported for an index in DrawElements and friends.
3018 * This must be at least (1ull<<24)-1. The default value is
3021 * \since ES 3.0 or GL_ARB_ES3_compatibility
3022 * \sa _mesa_init_constants
3024 GLuint64 MaxElementIndex
;
3027 * Disable interpretation of line continuations (lines ending with a
3028 * backslash character ('\') in GLSL source.
3030 GLboolean DisableGLSLLineContinuations
;
3032 /** GL_ARB_texture_multisample */
3033 GLint MaxColorTextureSamples
;
3034 GLint MaxDepthTextureSamples
;
3035 GLint MaxIntegerSamples
;
3040 * Enable flag for each OpenGL extension. Different device drivers will
3041 * enable different extensions at runtime.
3043 struct gl_extensions
3045 GLboolean dummy
; /* don't remove this! */
3046 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3047 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3048 GLboolean ANGLE_texture_compression_dxt
;
3049 GLboolean ARB_ES2_compatibility
;
3050 GLboolean ARB_ES3_compatibility
;
3051 GLboolean ARB_base_instance
;
3052 GLboolean ARB_blend_func_extended
;
3053 GLboolean ARB_color_buffer_float
;
3054 GLboolean ARB_conservative_depth
;
3055 GLboolean ARB_depth_buffer_float
;
3056 GLboolean ARB_depth_clamp
;
3057 GLboolean ARB_depth_texture
;
3058 GLboolean ARB_draw_buffers_blend
;
3059 GLboolean ARB_draw_elements_base_vertex
;
3060 GLboolean ARB_draw_instanced
;
3061 GLboolean ARB_fragment_coord_conventions
;
3062 GLboolean ARB_fragment_program
;
3063 GLboolean ARB_fragment_program_shadow
;
3064 GLboolean ARB_fragment_shader
;
3065 GLboolean ARB_framebuffer_object
;
3066 GLboolean ARB_explicit_attrib_location
;
3067 GLboolean ARB_geometry_shader4
;
3068 GLboolean ARB_gpu_shader5
;
3069 GLboolean ARB_half_float_pixel
;
3070 GLboolean ARB_half_float_vertex
;
3071 GLboolean ARB_instanced_arrays
;
3072 GLboolean ARB_internalformat_query
;
3073 GLboolean ARB_map_buffer_alignment
;
3074 GLboolean ARB_map_buffer_range
;
3075 GLboolean ARB_occlusion_query
;
3076 GLboolean ARB_occlusion_query2
;
3077 GLboolean ARB_point_sprite
;
3078 GLboolean ARB_seamless_cube_map
;
3079 GLboolean ARB_shader_bit_encoding
;
3080 GLboolean ARB_shader_stencil_export
;
3081 GLboolean ARB_shader_texture_lod
;
3082 GLboolean ARB_shading_language_packing
;
3083 GLboolean ARB_shading_language_420pack
;
3084 GLboolean ARB_shadow
;
3086 GLboolean ARB_texture_border_clamp
;
3087 GLboolean ARB_texture_buffer_object
;
3088 GLboolean ARB_texture_buffer_object_rgb32
;
3089 GLboolean ARB_texture_buffer_range
;
3090 GLboolean ARB_texture_compression_rgtc
;
3091 GLboolean ARB_texture_cube_map
;
3092 GLboolean ARB_texture_cube_map_array
;
3093 GLboolean ARB_texture_env_combine
;
3094 GLboolean ARB_texture_env_crossbar
;
3095 GLboolean ARB_texture_env_dot3
;
3096 GLboolean ARB_texture_float
;
3097 GLboolean ARB_texture_multisample
;
3098 GLboolean ARB_texture_non_power_of_two
;
3099 GLboolean ARB_texture_query_lod
;
3100 GLboolean ARB_texture_rg
;
3101 GLboolean ARB_texture_rgb10_a2ui
;
3102 GLboolean ARB_timer_query
;
3103 GLboolean ARB_transform_feedback2
;
3104 GLboolean ARB_transform_feedback3
;
3105 GLboolean ARB_transform_feedback_instanced
;
3106 GLboolean ARB_uniform_buffer_object
;
3107 GLboolean ARB_vertex_program
;
3108 GLboolean ARB_vertex_shader
;
3109 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3110 GLboolean EXT_blend_color
;
3111 GLboolean EXT_blend_equation_separate
;
3112 GLboolean EXT_blend_func_separate
;
3113 GLboolean EXT_blend_minmax
;
3114 GLboolean EXT_depth_bounds_test
;
3115 GLboolean EXT_draw_buffers2
;
3116 GLboolean EXT_framebuffer_blit
;
3117 GLboolean EXT_framebuffer_multisample
;
3118 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3119 GLboolean EXT_framebuffer_sRGB
;
3120 GLboolean EXT_gpu_program_parameters
;
3121 GLboolean EXT_gpu_shader4
;
3122 GLboolean EXT_packed_depth_stencil
;
3123 GLboolean EXT_packed_float
;
3124 GLboolean EXT_pixel_buffer_object
;
3125 GLboolean EXT_point_parameters
;
3126 GLboolean EXT_provoking_vertex
;
3127 GLboolean EXT_separate_shader_objects
;
3128 GLboolean EXT_stencil_two_side
;
3129 GLboolean EXT_texture3D
;
3130 GLboolean EXT_texture_array
;
3131 GLboolean EXT_texture_compression_latc
;
3132 GLboolean EXT_texture_compression_s3tc
;
3133 GLboolean EXT_texture_env_dot3
;
3134 GLboolean EXT_texture_filter_anisotropic
;
3135 GLboolean EXT_texture_integer
;
3136 GLboolean EXT_texture_mirror_clamp
;
3137 GLboolean EXT_texture_shared_exponent
;
3138 GLboolean EXT_texture_snorm
;
3139 GLboolean EXT_texture_sRGB
;
3140 GLboolean EXT_texture_sRGB_decode
;
3141 GLboolean EXT_texture_swizzle
;
3142 GLboolean EXT_transform_feedback
;
3143 GLboolean EXT_timer_query
;
3144 GLboolean EXT_vertex_array_bgra
;
3145 GLboolean OES_standard_derivatives
;
3146 /* vendor extensions */
3147 GLboolean AMD_seamless_cubemap_per_texture
;
3148 GLboolean AMD_vertex_shader_layer
;
3149 GLboolean APPLE_object_purgeable
;
3150 GLboolean ATI_envmap_bumpmap
;
3151 GLboolean ATI_texture_compression_3dc
;
3152 GLboolean ATI_texture_mirror_once
;
3153 GLboolean ATI_texture_env_combine3
;
3154 GLboolean ATI_fragment_shader
;
3155 GLboolean ATI_separate_stencil
;
3156 GLboolean MESA_pack_invert
;
3157 GLboolean MESA_shader_integer_mix
;
3158 GLboolean MESA_texture_array
;
3159 GLboolean MESA_ycbcr_texture
;
3160 GLboolean NV_conditional_render
;
3161 GLboolean NV_fog_distance
;
3162 GLboolean NV_fragment_program_option
;
3163 GLboolean NV_point_sprite
;
3164 GLboolean NV_primitive_restart
;
3165 GLboolean NV_texture_barrier
;
3166 GLboolean NV_texture_env_combine4
;
3167 GLboolean NV_texture_rectangle
;
3168 GLboolean TDFX_texture_compression_FXT1
;
3169 GLboolean OES_EGL_image
;
3170 GLboolean OES_draw_texture
;
3171 GLboolean OES_depth_texture_cube_map
;
3172 GLboolean OES_EGL_image_external
;
3173 GLboolean OES_compressed_ETC1_RGB8_texture
;
3174 GLboolean extension_sentinel
;
3175 /** The extension string */
3176 const GLubyte
*String
;
3177 /** Number of supported extensions */
3183 * A stack of matrices (projection, modelview, color, texture, etc).
3185 struct gl_matrix_stack
3187 GLmatrix
*Top
; /**< points into Stack */
3188 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3189 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3190 GLuint MaxDepth
; /**< size of Stack[] array */
3191 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3196 * \name Bits for image transfer operations
3197 * \sa __struct gl_contextRec::ImageTransferState.
3200 #define IMAGE_SCALE_BIAS_BIT 0x1
3201 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3202 #define IMAGE_MAP_COLOR_BIT 0x4
3203 #define IMAGE_CLAMP_BIT 0x800
3206 /** Pixel Transfer ops */
3207 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3208 IMAGE_SHIFT_OFFSET_BIT | \
3209 IMAGE_MAP_COLOR_BIT)
3212 * \name Bits to indicate what state has changed.
3215 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3216 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3217 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3218 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3219 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3220 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3221 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3222 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3223 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3224 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3225 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3226 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3227 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3228 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3229 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3230 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3231 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3232 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3233 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3234 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3235 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3236 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3237 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3238 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3239 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3240 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3241 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3242 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3243 #define _NEW_BUFFER_OBJECT (1 << 28)
3244 #define _NEW_FRAG_CLAMP (1 << 29)
3245 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3246 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3252 * Composite state flags
3255 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3261 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3271 /* This has to be included here. */
3276 * Display list flags.
3277 * Strictly this is a tnl-private concept, but it doesn't seem
3278 * worthwhile adding a tnl private structure just to hold this one bit
3281 #define DLIST_DANGLING_REFS 0x1
3284 /** Opaque declaration of display list payload data type */
3285 union gl_dlist_node
;
3289 * Provide a location where information about a display list can be
3290 * collected. Could be extended with driverPrivate structures,
3291 * etc. in the future.
3293 struct gl_display_list
3296 GLchar
*Label
; /**< GL_KHR_debug */
3297 GLbitfield Flags
; /**< DLIST_x flags */
3298 /** The dlist commands are in a linked list of nodes */
3299 union gl_dlist_node
*Head
;
3304 * State used during display list compilation and execution.
3306 struct gl_dlist_state
3308 GLuint CallDepth
; /**< Current recursion calling depth */
3310 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3311 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3312 GLuint CurrentPos
; /**< Index into current block of nodes */
3314 GLvertexformat ListVtxfmt
;
3316 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3317 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3319 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3320 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3323 /* State known to have been set by the currently-compiling display
3324 * list. Used to eliminate some redundant state changes.
3332 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3333 * to small enums suitable for use as an array index.
3336 enum mesa_debug_source
{
3337 MESA_DEBUG_SOURCE_API
,
3338 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3339 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3340 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3341 MESA_DEBUG_SOURCE_APPLICATION
,
3342 MESA_DEBUG_SOURCE_OTHER
,
3343 MESA_DEBUG_SOURCE_COUNT
3346 enum mesa_debug_type
{
3347 MESA_DEBUG_TYPE_ERROR
,
3348 MESA_DEBUG_TYPE_DEPRECATED
,
3349 MESA_DEBUG_TYPE_UNDEFINED
,
3350 MESA_DEBUG_TYPE_PORTABILITY
,
3351 MESA_DEBUG_TYPE_PERFORMANCE
,
3352 MESA_DEBUG_TYPE_OTHER
,
3353 MESA_DEBUG_TYPE_MARKER
,
3354 MESA_DEBUG_TYPE_PUSH_GROUP
,
3355 MESA_DEBUG_TYPE_POP_GROUP
,
3356 MESA_DEBUG_TYPE_COUNT
3359 enum mesa_debug_severity
{
3360 MESA_DEBUG_SEVERITY_LOW
,
3361 MESA_DEBUG_SEVERITY_MEDIUM
,
3362 MESA_DEBUG_SEVERITY_HIGH
,
3363 MESA_DEBUG_SEVERITY_NOTIFICATION
,
3364 MESA_DEBUG_SEVERITY_COUNT
3370 * An error, warning, or other piece of debug information for an application
3371 * to consume via GL_ARB_debug_output/GL_KHR_debug.
3375 enum mesa_debug_source source
;
3376 enum mesa_debug_type type
;
3378 enum mesa_debug_severity severity
;
3383 struct gl_debug_namespace
3385 struct _mesa_HashTable
*IDs
;
3386 unsigned ZeroID
; /* a HashTable won't take zero, so store its state here */
3387 /** lists of IDs in the hash table at each severity */
3388 struct simple_node Severity
[MESA_DEBUG_SEVERITY_COUNT
];
3391 struct gl_debug_state
3393 GLDEBUGPROC Callback
;
3394 const void *CallbackData
;
3395 GLboolean SyncOutput
;
3396 GLboolean DebugOutput
;
3397 GLboolean ARBCallback
; /* Used to track if current callback is of type ARB_debug_output or KHR_debug */
3398 GLboolean Defaults
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SEVERITY_COUNT
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3399 struct gl_debug_namespace Namespaces
[MAX_DEBUG_GROUP_STACK_DEPTH
][MESA_DEBUG_SOURCE_COUNT
][MESA_DEBUG_TYPE_COUNT
];
3400 struct gl_debug_msg Log
[MAX_DEBUG_LOGGED_MESSAGES
];
3401 struct gl_debug_msg DebugGroupMsgs
[MAX_DEBUG_GROUP_STACK_DEPTH
];
3402 GLint GroupStackDepth
;
3405 GLint NextMsgLength
; /* redundant, but copied here from Log[NextMsg].length
3406 for the sake of the offsetof() code in get.c */
3410 * Enum for the OpenGL APIs we know about and may support.
3412 * NOTE: This must match the api_enum table in
3413 * src/mesa/main/get_hash_generator.py
3417 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
3421 API_OPENGL_LAST
= API_OPENGL_CORE
3425 * Driver-specific state flags.
3427 * These are or'd with gl_context::NewDriverState to notify a driver about
3428 * a state change. The driver sets the flags at context creation and
3429 * the meaning of the bits set is opaque to core Mesa.
3431 struct gl_driver_flags
3433 /** gl_context::Array::_DrawArrays (vertex array state) */
3434 GLbitfield NewArray
;
3436 /** gl_context::TransformFeedback::CurrentObject */
3437 GLbitfield NewTransformFeedback
;
3439 /** gl_context::RasterDiscard */
3440 GLbitfield NewRasterizerDiscard
;
3443 * gl_context::UniformBufferBindings
3444 * gl_shader_program::UniformBlocks
3446 GLbitfield NewUniformBuffer
;
3449 struct gl_uniform_buffer_binding
3451 struct gl_buffer_object
*BufferObject
;
3452 /** Start of uniform block data in the buffer */
3454 /** Size of data allowed to be referenced from the buffer (in bytes) */
3457 * glBindBufferBase() indicates that the Size should be ignored and only
3458 * limited by the current size of the BufferObject.
3460 GLboolean AutomaticSize
;
3464 * Mesa rendering context.
3466 * This is the central context data structure for Mesa. Almost all
3467 * OpenGL state is contained in this structure.
3468 * Think of this as a base class from which device drivers will derive
3471 * The struct gl_context typedef names this structure.
3475 /** State possibly shared with other contexts in the address space */
3476 struct gl_shared_state
*Shared
;
3478 /** \name API function pointer tables */
3482 * The current dispatch table for non-displaylist-saving execution, either
3483 * BeginEnd or OutsideBeginEnd
3485 struct _glapi_table
*Exec
;
3487 * The normal dispatch table for non-displaylist-saving, non-begin/end
3489 struct _glapi_table
*OutsideBeginEnd
;
3490 /** The dispatch table used between glNewList() and glEndList() */
3491 struct _glapi_table
*Save
;
3493 * The dispatch table used between glBegin() and glEnd() (outside of a
3494 * display list). Only valid functions between those two are set, which is
3495 * mostly just the set in a GLvertexformat struct.
3497 struct _glapi_table
*BeginEnd
;
3499 * Tracks the current dispatch table out of the 3 above, so that it can be
3500 * re-set on glXMakeCurrent().
3502 struct _glapi_table
*CurrentDispatch
;
3505 struct gl_config Visual
;
3506 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3507 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3508 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3509 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3512 * Device driver function pointer table
3514 struct dd_function_table Driver
;
3516 /** Core/Driver constants */
3517 struct gl_constants Const
;
3519 /** \name The various 4x4 matrix stacks */
3521 struct gl_matrix_stack ModelviewMatrixStack
;
3522 struct gl_matrix_stack ProjectionMatrixStack
;
3523 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3524 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3525 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3528 /** Combined modelview and projection matrix */
3529 GLmatrix _ModelProjectMatrix
;
3531 /** \name Display lists */
3532 struct gl_dlist_state ListState
;
3534 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3535 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3537 /** Extension information */
3538 struct gl_extensions Extensions
;
3540 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3542 char *VersionString
;
3544 /** \name State attribute stack (for glPush/PopAttrib) */
3546 GLuint AttribStackDepth
;
3547 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3550 /** \name Renderer attribute groups
3552 * We define a struct for each attribute group to make pushing and popping
3553 * attributes easy. Also it's a good organization.
3556 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
3557 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
3558 struct gl_current_attrib Current
; /**< Current attributes */
3559 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
3560 struct gl_eval_attrib Eval
; /**< Eval attributes */
3561 struct gl_fog_attrib Fog
; /**< Fog attributes */
3562 struct gl_hint_attrib Hint
; /**< Hint attributes */
3563 struct gl_light_attrib Light
; /**< Light attributes */
3564 struct gl_line_attrib Line
; /**< Line attributes */
3565 struct gl_list_attrib List
; /**< List attributes */
3566 struct gl_multisample_attrib Multisample
;
3567 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
3568 struct gl_point_attrib Point
; /**< Point attributes */
3569 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
3570 GLuint PolygonStipple
[32]; /**< Polygon stipple */
3571 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
3572 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
3573 struct gl_texture_attrib Texture
; /**< Texture attributes */
3574 struct gl_transform_attrib Transform
; /**< Transformation attributes */
3575 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
3578 /** \name Client attribute stack */
3580 GLuint ClientAttribStackDepth
;
3581 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
3584 /** \name Client attribute groups */
3586 struct gl_array_attrib Array
; /**< Vertex arrays */
3587 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
3588 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
3589 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
3592 /** \name Other assorted state (not pushed/popped on attribute stack) */
3594 struct gl_pixelmaps PixelMaps
;
3596 struct gl_evaluators EvalMap
; /**< All evaluators */
3597 struct gl_feedback Feedback
; /**< Feedback */
3598 struct gl_selection Select
; /**< Selection */
3600 struct gl_program_state Program
; /**< general program state */
3601 struct gl_vertex_program_state VertexProgram
;
3602 struct gl_fragment_program_state FragmentProgram
;
3603 struct gl_geometry_program_state GeometryProgram
;
3604 struct gl_ati_fragment_shader_state ATIFragmentShader
;
3606 struct gl_shader_state Shader
; /**< GLSL shader object state */
3607 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_TYPES
];
3609 struct gl_query_state Query
; /**< occlusion, timer queries */
3611 struct gl_transform_feedback_state TransformFeedback
;
3613 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
3614 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
3617 * Current GL_ARB_uniform_buffer_object binding referenced by
3618 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
3620 struct gl_buffer_object
*UniformBuffer
;
3623 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
3624 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
3625 * associated with uniform blocks by glUniformBlockBinding()'s state in the
3628 struct gl_uniform_buffer_binding
3629 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
3633 struct gl_meta_state
*Meta
; /**< for "meta" operations */
3635 /* GL_EXT_framebuffer_object */
3636 struct gl_renderbuffer
*CurrentRenderbuffer
;
3638 GLenum ErrorValue
; /**< Last error code */
3640 /* GL_ARB_robustness */
3644 * Recognize and silence repeated error debug messages in buggy apps.
3646 const char *ErrorDebugFmtString
;
3647 GLuint ErrorDebugCount
;
3649 /* GL_ARB_debug_output/GL_KHR_debug */
3650 struct gl_debug_state Debug
;
3652 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3653 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
3654 GLbitfield NewDriverState
;/**< bitwise-or of flags from DriverFlags */
3656 struct gl_driver_flags DriverFlags
;
3658 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
3660 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
3662 /** \name Derived state */
3663 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
3664 GLfloat _EyeZDir
[3];
3665 GLfloat _ModelViewInvScale
;
3666 GLboolean _NeedEyeCoords
;
3667 GLboolean _ForceEyeCoords
;
3669 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
3671 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
3673 /** \name For debugging/development only */
3675 GLboolean FirstTimeCurrent
;
3678 /** software compression/decompression supported or not */
3679 GLboolean Mesa_DXTn
;
3681 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
3683 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
3686 * \name Hooks for module contexts.
3688 * These will eventually live in the driver or elsewhere.
3691 void *swrast_context
;
3692 void *swsetup_context
;
3693 void *swtnl_context
;
3694 struct vbo_context
*vbo_context
;
3695 struct st_context
*st
;
3702 extern int MESA_VERBOSE
;
3703 extern int MESA_DEBUG_FLAGS
;
3704 # define MESA_FUNCTION __FUNCTION__
3706 # define MESA_VERBOSE 0
3707 # define MESA_DEBUG_FLAGS 0
3708 # define MESA_FUNCTION "a function"
3715 /** The MESA_VERBOSE var is a bitmask of these flags */
3718 VERBOSE_VARRAY
= 0x0001,
3719 VERBOSE_TEXTURE
= 0x0002,
3720 VERBOSE_MATERIAL
= 0x0004,
3721 VERBOSE_PIPELINE
= 0x0008,
3722 VERBOSE_DRIVER
= 0x0010,
3723 VERBOSE_STATE
= 0x0020,
3724 VERBOSE_API
= 0x0040,
3725 VERBOSE_DISPLAY_LIST
= 0x0100,
3726 VERBOSE_LIGHTING
= 0x0200,
3727 VERBOSE_PRIMS
= 0x0400,
3728 VERBOSE_VERTS
= 0x0800,
3729 VERBOSE_DISASSEM
= 0x1000,
3730 VERBOSE_DRAW
= 0x2000,
3731 VERBOSE_SWAPBUFFERS
= 0x4000
3735 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3738 DEBUG_SILENT
= (1 << 0),
3739 DEBUG_ALWAYS_FLUSH
= (1 << 1),
3740 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
3741 DEBUG_INCOMPLETE_FBO
= (1 << 3)
3750 #endif /* MTYPES_H */