2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include <stdint.h> /* uint32_t */
39 #include "c11/threads.h"
41 #include "main/glheader.h"
42 #include "main/config.h"
43 #include "glapi/glapi.h"
44 #include "math/m_matrix.h" /* GLmatrix */
45 #include "compiler/shader_enums.h"
46 #include "main/formats.h" /* MESA_FORMAT_COUNT */
47 #include "compiler/glsl/list.h"
56 * \name 64-bit extension of GLbitfield.
59 typedef GLuint64 GLbitfield64
;
61 /** Set a single bit */
62 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
63 /** Set all bits up to excluding bit b */
64 #define BITFIELD64_MASK(b) \
65 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
66 /** Set count bits starting from bit b */
67 #define BITFIELD64_RANGE(b, count) \
68 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
72 * \name Some forward type declarations
75 struct _mesa_HashTable
;
76 struct gl_attrib_node
;
77 struct gl_list_extensions
;
79 struct gl_program_cache
;
80 struct gl_texture_object
;
81 struct gl_debug_state
;
84 struct gl_uniform_storage
;
85 struct prog_instruction
;
86 struct gl_program_parameter_list
;
93 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
94 #define PRIM_MAX GL_PATCHES
95 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
96 #define PRIM_UNKNOWN (PRIM_MAX + 2)
99 * Determine if the given gl_varying_slot appears in the fragment shader.
101 static inline GLboolean
102 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
105 case VARYING_SLOT_PSIZ
:
106 case VARYING_SLOT_BFC0
:
107 case VARYING_SLOT_BFC1
:
108 case VARYING_SLOT_EDGE
:
109 case VARYING_SLOT_CLIP_VERTEX
:
110 case VARYING_SLOT_LAYER
:
111 case VARYING_SLOT_TESS_LEVEL_OUTER
:
112 case VARYING_SLOT_TESS_LEVEL_INNER
:
120 * Indexes for all renderbuffers
124 /* the four standard color buffers */
132 /* optional aux buffer */
134 /* generic renderbuffers */
147 * Bit flags for all renderbuffers
149 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
150 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
151 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
152 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
153 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
154 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
155 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
156 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
157 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
158 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
159 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
160 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
161 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
162 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
163 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
164 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
165 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
166 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
167 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
170 * Mask of all the color buffer bits (but not accum).
172 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
173 BUFFER_BIT_BACK_LEFT | \
174 BUFFER_BIT_FRONT_RIGHT | \
175 BUFFER_BIT_BACK_RIGHT | \
177 BUFFER_BIT_COLOR0 | \
178 BUFFER_BIT_COLOR1 | \
179 BUFFER_BIT_COLOR2 | \
180 BUFFER_BIT_COLOR3 | \
181 BUFFER_BIT_COLOR4 | \
182 BUFFER_BIT_COLOR5 | \
183 BUFFER_BIT_COLOR6 | \
187 * Framebuffer configuration (aka visual / pixelformat)
188 * Note: some of these fields should be boolean, but it appears that
189 * code in drivers/dri/common/util.c requires int-sized fields.
195 GLuint doubleBufferMode
;
198 GLboolean haveAccumBuffer
;
199 GLboolean haveDepthBuffer
;
200 GLboolean haveStencilBuffer
;
202 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
203 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
204 GLint rgbBits
; /* total bits for rgb */
205 GLint indexBits
; /* total bits for colorindex */
207 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
215 /* EXT_visual_rating / GLX 1.2 */
218 /* EXT_visual_info / GLX 1.2 */
219 GLint transparentPixel
;
220 /* colors are floats scaled to ints */
221 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
222 GLint transparentIndex
;
224 /* ARB_multisample / SGIS_multisample */
228 /* SGIX_pbuffer / GLX 1.3 */
229 GLint maxPbufferWidth
;
230 GLint maxPbufferHeight
;
231 GLint maxPbufferPixels
;
232 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
233 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
235 /* OML_swap_method */
238 /* EXT_texture_from_pixmap */
239 GLint bindToTextureRgb
;
240 GLint bindToTextureRgba
;
241 GLint bindToMipmapTexture
;
242 GLint bindToTextureTargets
;
245 /* EXT_framebuffer_sRGB */
251 * \name Bit flags used for updating material values.
254 #define MAT_ATTRIB_FRONT_AMBIENT 0
255 #define MAT_ATTRIB_BACK_AMBIENT 1
256 #define MAT_ATTRIB_FRONT_DIFFUSE 2
257 #define MAT_ATTRIB_BACK_DIFFUSE 3
258 #define MAT_ATTRIB_FRONT_SPECULAR 4
259 #define MAT_ATTRIB_BACK_SPECULAR 5
260 #define MAT_ATTRIB_FRONT_EMISSION 6
261 #define MAT_ATTRIB_BACK_EMISSION 7
262 #define MAT_ATTRIB_FRONT_SHININESS 8
263 #define MAT_ATTRIB_BACK_SHININESS 9
264 #define MAT_ATTRIB_FRONT_INDEXES 10
265 #define MAT_ATTRIB_BACK_INDEXES 11
266 #define MAT_ATTRIB_MAX 12
268 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
269 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
270 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
271 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
272 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
273 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
275 #define MAT_INDEX_AMBIENT 0
276 #define MAT_INDEX_DIFFUSE 1
277 #define MAT_INDEX_SPECULAR 2
279 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
280 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
281 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
282 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
283 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
284 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
285 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
286 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
287 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
288 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
289 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
290 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
293 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
294 MAT_BIT_FRONT_AMBIENT | \
295 MAT_BIT_FRONT_DIFFUSE | \
296 MAT_BIT_FRONT_SPECULAR | \
297 MAT_BIT_FRONT_SHININESS | \
298 MAT_BIT_FRONT_INDEXES)
300 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
301 MAT_BIT_BACK_AMBIENT | \
302 MAT_BIT_BACK_DIFFUSE | \
303 MAT_BIT_BACK_SPECULAR | \
304 MAT_BIT_BACK_SHININESS | \
305 MAT_BIT_BACK_INDEXES)
307 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
316 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
324 #define LIGHT_SPOT 0x1
325 #define LIGHT_LOCAL_VIEWER 0x2
326 #define LIGHT_POSITIONAL 0x4
327 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
332 * Light source state.
336 GLfloat Ambient
[4]; /**< ambient color */
337 GLfloat Diffuse
[4]; /**< diffuse color */
338 GLfloat Specular
[4]; /**< specular color */
339 GLfloat EyePosition
[4]; /**< position in eye coordinates */
340 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
341 GLfloat SpotExponent
;
342 GLfloat SpotCutoff
; /**< in degrees */
343 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
344 GLfloat ConstantAttenuation
;
345 GLfloat LinearAttenuation
;
346 GLfloat QuadraticAttenuation
;
347 GLboolean Enabled
; /**< On/off flag */
350 * \name Derived fields
353 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
355 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
356 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
357 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
358 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
359 GLfloat _VP_inf_spot_attenuation
;
361 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
362 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
363 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
373 GLfloat Ambient
[4]; /**< ambient color */
374 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
375 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
376 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
377 * or GL_SEPARATE_SPECULAR_COLOR */
382 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
384 struct gl_accum_attrib
386 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
391 * Used for storing clear color, texture border color, etc.
392 * The float values are typically unclamped.
403 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
405 struct gl_colorbuffer_attrib
407 GLuint ClearIndex
; /**< Index for glClear */
408 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
409 GLuint IndexMask
; /**< Color index write mask */
410 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
412 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
415 * \name alpha testing
418 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
419 GLenum AlphaFunc
; /**< Alpha test function */
420 GLfloat AlphaRefUnclamped
;
421 GLclampf AlphaRef
; /**< Alpha reference value */
428 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
430 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
431 * control, only on the fixed-pointness of the render target.
432 * The query does however depend on fragment color clamping.
434 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
435 GLfloat BlendColor
[4]; /**< Blending color */
439 GLenum SrcRGB
; /**< RGB blend source term */
440 GLenum DstRGB
; /**< RGB blend dest term */
441 GLenum SrcA
; /**< Alpha blend source term */
442 GLenum DstA
; /**< Alpha blend dest term */
443 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
444 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
446 * Set if any blend factor uses SRC1. Computed at the time blend factors
449 GLboolean _UsesDualSrc
;
450 } Blend
[MAX_DRAW_BUFFERS
];
451 /** Are the blend func terms currently different for each buffer/target? */
452 GLboolean _BlendFuncPerBuffer
;
453 /** Are the blend equations currently different for each buffer/target? */
454 GLboolean _BlendEquationPerBuffer
;
461 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
462 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
463 GLenum LogicOp
; /**< Logic operator */
467 GLboolean DitherFlag
; /**< Dither enable flag */
469 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
470 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
471 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
473 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
478 * Current attribute group (GL_CURRENT_BIT).
480 struct gl_current_attrib
483 * \name Current vertex attributes (color, texcoords, etc).
484 * \note Values are valid only after FLUSH_VERTICES has been called.
485 * \note Index and Edgeflag current values are stored as floats in the
486 * SIX and SEVEN attribute slots.
487 * \note We need double storage for 64-bit vertex attributes
489 GLfloat Attrib
[VERT_ATTRIB_MAX
][4*2];
492 * \name Current raster position attributes (always up to date after a
495 GLfloat RasterPos
[4];
496 GLfloat RasterDistance
;
497 GLfloat RasterColor
[4];
498 GLfloat RasterSecondaryColor
[4];
499 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
500 GLboolean RasterPosValid
;
505 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
507 struct gl_depthbuffer_attrib
509 GLenum Func
; /**< Function for depth buffer compare */
510 GLclampd Clear
; /**< Value to clear depth buffer to */
511 GLboolean Test
; /**< Depth buffering enabled flag */
512 GLboolean Mask
; /**< Depth buffer writable? */
513 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
514 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
519 * Evaluator attribute group (GL_EVAL_BIT).
521 struct gl_eval_attrib
527 GLboolean Map1Color4
;
529 GLboolean Map1Normal
;
530 GLboolean Map1TextureCoord1
;
531 GLboolean Map1TextureCoord2
;
532 GLboolean Map1TextureCoord3
;
533 GLboolean Map1TextureCoord4
;
534 GLboolean Map1Vertex3
;
535 GLboolean Map1Vertex4
;
536 GLboolean Map2Color4
;
538 GLboolean Map2Normal
;
539 GLboolean Map2TextureCoord1
;
540 GLboolean Map2TextureCoord2
;
541 GLboolean Map2TextureCoord3
;
542 GLboolean Map2TextureCoord4
;
543 GLboolean Map2Vertex3
;
544 GLboolean Map2Vertex4
;
545 GLboolean AutoNormal
;
549 * \name Map Grid endpoints and divisions and calculated du values
553 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
554 GLint MapGrid2un
, MapGrid2vn
;
555 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
556 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
562 * Fog attribute group (GL_FOG_BIT).
566 GLboolean Enabled
; /**< Fog enabled flag */
567 GLboolean ColorSumEnabled
;
568 GLfloat ColorUnclamped
[4]; /**< Fog color */
569 GLfloat Color
[4]; /**< Fog color */
570 GLfloat Density
; /**< Density >= 0.0 */
571 GLfloat Start
; /**< Start distance in eye coords */
572 GLfloat End
; /**< End distance in eye coords */
573 GLfloat Index
; /**< Fog index */
574 GLenum Mode
; /**< Fog mode */
575 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
576 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
577 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
582 * Hint attribute group (GL_HINT_BIT).
584 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
586 struct gl_hint_attrib
588 GLenum PerspectiveCorrection
;
591 GLenum PolygonSmooth
;
593 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
594 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
595 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
600 * Lighting attribute group (GL_LIGHT_BIT).
602 struct gl_light_attrib
604 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
605 struct gl_lightmodel Model
; /**< Lighting model */
608 * Front and back material values.
609 * Note: must call FLUSH_VERTICES() before using.
611 struct gl_material Material
;
613 GLboolean Enabled
; /**< Lighting enabled flag */
614 GLboolean ColorMaterialEnabled
;
616 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
617 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
618 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
619 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
620 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
623 GLboolean _ClampVertexColor
;
624 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
627 * Derived state for optimizations:
630 GLbitfield _EnabledLights
; /**< bitmask containing enabled lights */
632 GLboolean _NeedEyeCoords
;
633 GLboolean _NeedVertices
; /**< Use fast shader? */
635 GLfloat _BaseColor
[2][3];
641 * Line attribute group (GL_LINE_BIT).
643 struct gl_line_attrib
645 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
646 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
647 GLushort StipplePattern
; /**< Stipple pattern */
648 GLint StippleFactor
; /**< Stipple repeat factor */
649 GLfloat Width
; /**< Line width */
654 * Display list attribute group (GL_LIST_BIT).
656 struct gl_list_attrib
663 * Multisample attribute group (GL_MULTISAMPLE_BIT).
665 struct gl_multisample_attrib
668 GLboolean SampleAlphaToCoverage
;
669 GLboolean SampleAlphaToOne
;
670 GLboolean SampleCoverage
;
671 GLboolean SampleCoverageInvert
;
672 GLboolean SampleShading
;
674 /* ARB_texture_multisample / GL3.2 additions */
675 GLboolean SampleMask
;
677 GLfloat SampleCoverageValue
;
678 GLfloat MinSampleShadingValue
;
680 /** The GL spec defines this as an array but >32x MSAA is madness */
681 GLbitfield SampleMaskValue
;
686 * A pixelmap (see glPixelMap)
691 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
696 * Collection of all pixelmaps
700 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
701 struct gl_pixelmap GtoG
;
702 struct gl_pixelmap BtoB
;
703 struct gl_pixelmap AtoA
;
704 struct gl_pixelmap ItoR
;
705 struct gl_pixelmap ItoG
;
706 struct gl_pixelmap ItoB
;
707 struct gl_pixelmap ItoA
;
708 struct gl_pixelmap ItoI
;
709 struct gl_pixelmap StoS
;
714 * Pixel attribute group (GL_PIXEL_MODE_BIT).
716 struct gl_pixel_attrib
718 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
720 /*--- Begin Pixel Transfer State ---*/
721 /* Fields are in the order in which they're applied... */
723 /** Scale & Bias (index shift, offset) */
725 GLfloat RedBias
, RedScale
;
726 GLfloat GreenBias
, GreenScale
;
727 GLfloat BlueBias
, BlueScale
;
728 GLfloat AlphaBias
, AlphaScale
;
729 GLfloat DepthBias
, DepthScale
;
730 GLint IndexShift
, IndexOffset
;
734 /* Note: actual pixel maps are not part of this attrib group */
735 GLboolean MapColorFlag
;
736 GLboolean MapStencilFlag
;
738 /*--- End Pixel Transfer State ---*/
741 GLfloat ZoomX
, ZoomY
;
746 * Point attribute group (GL_POINT_BIT).
748 struct gl_point_attrib
750 GLfloat Size
; /**< User-specified point size */
751 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
752 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
753 GLfloat Threshold
; /**< GL_EXT_point_parameters */
754 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
755 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
756 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
757 GLbitfield CoordReplace
; /**< GL_ARB_point_sprite*/
758 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
759 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
764 * Polygon attribute group (GL_POLYGON_BIT).
766 struct gl_polygon_attrib
768 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
769 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
770 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
771 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
772 GLboolean CullFlag
; /**< Culling on/off flag */
773 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
774 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
775 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
776 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
777 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
778 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
779 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
780 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
781 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
786 * Scissor attributes (GL_SCISSOR_BIT).
788 struct gl_scissor_rect
790 GLint X
, Y
; /**< Lower left corner of box */
791 GLsizei Width
, Height
; /**< Size of box */
793 struct gl_scissor_attrib
795 GLbitfield EnableFlags
; /**< Scissor test enabled? */
796 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
797 GLint NumWindowRects
; /**< Count of enabled window rectangles */
798 GLenum WindowRectMode
; /**< Whether to include or exclude the rects */
799 struct gl_scissor_rect WindowRects
[MAX_WINDOW_RECTANGLES
];
804 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
806 * Three sets of stencil data are tracked so that OpenGL 2.0,
807 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
808 * simultaneously. In each of the stencil state arrays, element 0 corresponds
809 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
810 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
811 * GL_EXT_stencil_two_side GL_BACK state.
813 * The derived value \c _BackFace is either 1 or 2 depending on whether or
814 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
816 * The derived value \c _TestTwoSide is set when the front-face and back-face
817 * stencil state are different.
819 struct gl_stencil_attrib
821 GLboolean Enabled
; /**< Enabled flag */
822 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
823 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
824 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
825 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
826 GLboolean _TestTwoSide
;
827 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
828 GLenum Function
[3]; /**< Stencil function */
829 GLenum FailFunc
[3]; /**< Fail function */
830 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
831 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
832 GLint Ref
[3]; /**< Reference value */
833 GLuint ValueMask
[3]; /**< Value mask */
834 GLuint WriteMask
[3]; /**< Write mask */
835 GLuint Clear
; /**< Clear value */
840 * An index for each type of texture object. These correspond to the GL
841 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
842 * Note: the order is from highest priority to lowest priority.
846 TEXTURE_2D_MULTISAMPLE_INDEX
,
847 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
848 TEXTURE_CUBE_ARRAY_INDEX
,
849 TEXTURE_BUFFER_INDEX
,
850 TEXTURE_2D_ARRAY_INDEX
,
851 TEXTURE_1D_ARRAY_INDEX
,
852 TEXTURE_EXTERNAL_INDEX
,
863 * Bit flags for each type of texture object
866 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
867 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
868 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
869 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
870 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
871 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
872 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
873 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
874 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
875 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
876 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
877 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
882 * Texture image state. Drivers will typically create a subclass of this
883 * with extra fields for memory buffers, etc.
885 struct gl_texture_image
887 GLint InternalFormat
; /**< Internal format as given by the user */
888 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
889 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
890 * GL_INTENSITY, GL_DEPTH_COMPONENT or
891 * GL_DEPTH_STENCIL_EXT only. Used for
892 * choosing TexEnv arithmetic.
894 mesa_format TexFormat
; /**< The actual texture memory format */
896 GLuint Border
; /**< 0 or 1 */
897 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
898 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
899 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
900 GLuint Width2
; /**< = Width - 2*Border */
901 GLuint Height2
; /**< = Height - 2*Border */
902 GLuint Depth2
; /**< = Depth - 2*Border */
903 GLuint WidthLog2
; /**< = log2(Width2) */
904 GLuint HeightLog2
; /**< = log2(Height2) */
905 GLuint DepthLog2
; /**< = log2(Depth2) */
906 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
907 levels, computed from the dimensions */
909 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
910 GLuint Level
; /**< Which mipmap level am I? */
911 /** Cube map face: index into gl_texture_object::Image[] array */
914 /** GL_ARB_texture_multisample */
915 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
916 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
921 * Indexes for cube map faces.
936 * Sampler object state. These objects are new with GL_ARB_sampler_objects
937 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
939 struct gl_sampler_object
944 GLchar
*Label
; /**< GL_KHR_debug */
946 GLenum WrapS
; /**< S-axis texture image wrap mode */
947 GLenum WrapT
; /**< T-axis texture image wrap mode */
948 GLenum WrapR
; /**< R-axis texture image wrap mode */
949 GLenum MinFilter
; /**< minification filter */
950 GLenum MagFilter
; /**< magnification filter */
951 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
952 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
953 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
954 GLfloat LodBias
; /**< OpenGL 1.4 */
955 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
956 GLenum CompareMode
; /**< GL_ARB_shadow */
957 GLenum CompareFunc
; /**< GL_ARB_shadow */
958 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
959 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
964 * Texture object state. Contains the array of mipmap images, border color,
965 * wrap modes, filter modes, and shadow/texcompare state.
967 struct gl_texture_object
969 mtx_t Mutex
; /**< for thread safety */
970 GLint RefCount
; /**< reference count */
971 GLuint Name
; /**< the user-visible texture object ID */
972 GLchar
*Label
; /**< GL_KHR_debug */
973 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
974 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
975 Only valid when Target is valid. */
977 struct gl_sampler_object Sampler
;
979 GLenum DepthMode
; /**< GL_ARB_depth_texture */
980 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
982 GLfloat Priority
; /**< in [0,1] */
983 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
984 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
985 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
986 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
987 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
988 GLint CropRect
[4]; /**< GL_OES_draw_texture */
989 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
990 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
991 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
992 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
993 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
994 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
995 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
996 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
998 GLboolean Immutable
; /**< GL_ARB_texture_storage */
999 GLboolean _IsFloat
; /**< GL_OES_float_texture */
1000 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
1002 GLuint MinLevel
; /**< GL_ARB_texture_view */
1003 GLuint MinLayer
; /**< GL_ARB_texture_view */
1004 GLuint NumLevels
; /**< GL_ARB_texture_view */
1005 GLuint NumLayers
; /**< GL_ARB_texture_view */
1007 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1008 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1010 /** GL_ARB_texture_buffer_object */
1011 struct gl_buffer_object
*BufferObject
;
1012 GLenum BufferObjectFormat
;
1013 /** Equivalent Mesa format for BufferObjectFormat. */
1014 mesa_format _BufferObjectFormat
;
1015 /** GL_ARB_texture_buffer_range */
1016 GLintptr BufferOffset
;
1017 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1019 /** GL_OES_EGL_image_external */
1020 GLint RequiredTextureImageUnits
;
1022 /** GL_ARB_shader_image_load_store */
1023 GLenum ImageFormatCompatibilityType
;
1027 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1028 #define MAX_COMBINER_TERMS 4
1032 * Texture combine environment state.
1034 struct gl_tex_env_combine_state
1036 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1037 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1038 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1039 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1040 GLenum SourceA
[MAX_COMBINER_TERMS
];
1041 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1042 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1043 GLenum OperandA
[MAX_COMBINER_TERMS
];
1044 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1045 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1046 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1047 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1052 * TexGenEnabled flags.
1059 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1064 * Bit flag versions of the corresponding GL_ constants.
1067 #define TEXGEN_SPHERE_MAP 0x1
1068 #define TEXGEN_OBJ_LINEAR 0x2
1069 #define TEXGEN_EYE_LINEAR 0x4
1070 #define TEXGEN_REFLECTION_MAP_NV 0x8
1071 #define TEXGEN_NORMAL_MAP_NV 0x10
1073 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1074 TEXGEN_REFLECTION_MAP_NV | \
1075 TEXGEN_NORMAL_MAP_NV)
1076 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1077 TEXGEN_REFLECTION_MAP_NV | \
1078 TEXGEN_NORMAL_MAP_NV | \
1084 /** Tex-gen enabled for texture unit? */
1085 #define ENABLE_TEXGEN(unit) (1 << (unit))
1087 /** Non-identity texture matrix for texture unit? */
1088 #define ENABLE_TEXMAT(unit) (1 << (unit))
1092 * Texture coord generation state.
1096 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1097 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1098 GLfloat ObjectPlane
[4];
1099 GLfloat EyePlane
[4];
1104 * Texture unit state. Contains enable flags, texture environment/function/
1105 * combiners, texgen state, and pointers to current texture objects.
1107 struct gl_texture_unit
1109 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1111 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1112 GLclampf EnvColor
[4];
1113 GLfloat EnvColorUnclamped
[4];
1115 struct gl_texgen GenS
;
1116 struct gl_texgen GenT
;
1117 struct gl_texgen GenR
;
1118 struct gl_texgen GenQ
;
1119 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1120 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1122 GLfloat LodBias
; /**< for biasing mipmap levels */
1124 /** Texture targets that have a non-default texture bound */
1125 GLbitfield _BoundTextures
;
1127 /** Current sampler object (GL_ARB_sampler_objects) */
1128 struct gl_sampler_object
*Sampler
;
1131 * \name GL_EXT_texture_env_combine
1133 struct gl_tex_env_combine_state Combine
;
1136 * Derived state based on \c EnvMode and the \c BaseFormat of the
1137 * currently enabled texture.
1139 struct gl_tex_env_combine_state _EnvMode
;
1142 * Currently enabled combiner state. This will point to either
1143 * \c Combine or \c _EnvMode.
1145 struct gl_tex_env_combine_state
*_CurrentCombine
;
1147 /** Current texture object pointers */
1148 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1150 /** Points to highest priority, complete and enabled texture object */
1151 struct gl_texture_object
*_Current
;
1157 * Texture attribute group (GL_TEXTURE_BIT).
1159 struct gl_texture_attrib
1161 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1163 /** GL_ARB_seamless_cubemap */
1164 GLboolean CubeMapSeamless
;
1166 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1168 /** GL_ARB_texture_buffer_object */
1169 struct gl_buffer_object
*BufferObject
;
1171 /** Texture coord units/sets used for fragment texturing */
1172 GLbitfield _EnabledCoordUnits
;
1174 /** Texture coord units that have texgen enabled */
1175 GLbitfield _TexGenEnabled
;
1177 /** Texture coord units that have non-identity matrices */
1178 GLbitfield _TexMatEnabled
;
1180 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1181 GLbitfield _GenFlags
;
1183 /** Largest index of a texture unit with _Current != NULL. */
1184 GLint _MaxEnabledTexImageUnit
;
1186 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1187 GLint NumCurrentTexUsed
;
1189 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1194 * Data structure representing a single clip plane (e.g. one of the elements
1195 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1197 typedef GLfloat gl_clip_plane
[4];
1201 * Transformation attribute group (GL_TRANSFORM_BIT).
1203 struct gl_transform_attrib
1205 GLenum MatrixMode
; /**< Matrix mode */
1206 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1207 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1208 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1209 GLboolean Normalize
; /**< Normalize all normals? */
1210 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1211 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1212 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1213 /** GL_ARB_clip_control */
1214 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1215 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1220 * Viewport attribute group (GL_VIEWPORT_BIT).
1222 struct gl_viewport_attrib
1224 GLfloat X
, Y
; /**< position */
1225 GLfloat Width
, Height
; /**< size */
1226 GLdouble Near
, Far
; /**< Depth buffer range */
1235 } gl_map_buffer_index
;
1239 * Fields describing a mapped buffer range.
1241 struct gl_buffer_mapping
{
1242 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1243 GLvoid
*Pointer
; /**< User-space address of mapping */
1244 GLintptr Offset
; /**< Mapped offset */
1245 GLsizeiptr Length
; /**< Mapped length */
1250 * Usages we've seen for a buffer object.
1253 USAGE_UNIFORM_BUFFER
= 0x1,
1254 USAGE_TEXTURE_BUFFER
= 0x2,
1255 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1256 USAGE_SHADER_STORAGE_BUFFER
= 0x8,
1257 USAGE_TRANSFORM_FEEDBACK_BUFFER
= 0x10,
1258 USAGE_PIXEL_PACK_BUFFER
= 0x20,
1259 USAGE_DISABLE_MINMAX_CACHE
= 0x40,
1264 * GL_ARB_vertex/pixel_buffer_object buffer object
1266 struct gl_buffer_object
1271 GLchar
*Label
; /**< GL_KHR_debug */
1272 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1273 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1274 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1275 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1276 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1277 GLboolean Written
; /**< Ever written to? (for debugging) */
1278 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1279 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1280 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1282 /** Counters used for buffer usage warnings */
1283 GLuint NumSubDataCalls
;
1284 GLuint NumMapBufferWriteCalls
;
1286 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1288 /** Memoization of min/max index computations for static index buffers */
1289 struct hash_table
*MinMaxCache
;
1290 unsigned MinMaxCacheHitIndices
;
1291 unsigned MinMaxCacheMissIndices
;
1292 bool MinMaxCacheDirty
;
1297 * Client pixel packing/unpacking attributes
1299 struct gl_pixelstore_attrib
1307 GLboolean SwapBytes
;
1309 GLboolean Invert
; /**< GL_MESA_pack_invert */
1310 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1311 GLint CompressedBlockHeight
;
1312 GLint CompressedBlockDepth
;
1313 GLint CompressedBlockSize
;
1314 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1319 * Client vertex array attributes
1321 struct gl_client_array
1323 GLint Size
; /**< components per element (1,2,3,4) */
1324 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1325 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1326 GLsizei StrideB
; /**< actual stride in bytes */
1327 GLuint _ElementSize
; /**< size of each element in bytes */
1328 const GLubyte
*Ptr
; /**< Points to array data */
1329 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1330 GLboolean Integer
; /**< Integer-valued? */
1331 GLboolean Doubles
; /**< double precision values are not converted to floats */
1332 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1334 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1339 * Vertex attribute array as seen by the client.
1341 * Contains the size, type, format and normalization flag,
1342 * along with the index of a vertex buffer binding point.
1344 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1345 * and is only present for backwards compatibility reasons.
1346 * Rendering always uses VERTEX_BINDING_STRIDE.
1347 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1348 * and VERTEX_BINDING_STRIDE to the same value, while
1349 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1351 struct gl_vertex_attrib_array
1353 GLint Size
; /**< Components per element (1,2,3,4) */
1354 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1355 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1356 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1357 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1358 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1359 GLboolean Enabled
; /**< Whether the array is enabled */
1360 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1361 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1362 GLboolean Doubles
; /**< double precision values are not converted to floats */
1363 GLuint _ElementSize
; /**< Size of each element in bytes */
1364 GLuint VertexBinding
; /**< Vertex buffer binding */
1369 * This describes the buffer object used for a vertex array (or
1370 * multiple vertex arrays). If BufferObj points to the default/null
1371 * buffer object, then the vertex array lives in user memory and not a VBO.
1373 struct gl_vertex_buffer_binding
1375 GLintptr Offset
; /**< User-specified offset */
1376 GLsizei Stride
; /**< User-specified stride */
1377 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1378 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1379 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1384 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1385 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1388 struct gl_vertex_array_object
1390 /** Name of the VAO as received from glGenVertexArray. */
1395 GLchar
*Label
; /**< GL_KHR_debug */
1400 * Does the VAO use ARB semantics or Apple semantics?
1402 * There are several ways in which ARB_vertex_array_object and
1403 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1406 * - ARB VAOs require that all array data be sourced from vertex buffer
1407 * objects, but Apple VAOs do not.
1409 * - ARB VAOs require that names come from GenVertexArrays.
1411 * This flag notes which behavior governs this VAO.
1413 GLboolean ARBsemantics
;
1416 * Has this array object been bound?
1418 GLboolean EverBound
;
1421 * Derived vertex attribute arrays
1423 * This is a legacy data structure created from gl_vertex_attrib_array and
1424 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1426 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1428 /** Vertex attribute arrays */
1429 struct gl_vertex_attrib_array VertexAttrib
[VERT_ATTRIB_MAX
];
1431 /** Vertex buffer bindings */
1432 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1434 /** Mask indicating which vertex arrays have vertex buffer associated. */
1435 GLbitfield64 VertexAttribBufferMask
;
1437 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1438 GLbitfield64 _Enabled
;
1440 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1441 GLbitfield64 NewArrays
;
1443 /** The index buffer (also known as the element array buffer in OpenGL). */
1444 struct gl_buffer_object
*IndexBufferObj
;
1448 /** Used to signal when transitioning from one kind of drawing method
1452 DRAW_NONE
, /**< Initial value only */
1459 * Enum for the OpenGL APIs we know about and may support.
1461 * NOTE: This must match the api_enum table in
1462 * src/mesa/main/get_hash_generator.py
1466 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1470 API_OPENGL_LAST
= API_OPENGL_CORE
1474 * Vertex array state
1476 struct gl_array_attrib
1478 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1479 struct gl_vertex_array_object
*VAO
;
1481 /** The default vertex array object */
1482 struct gl_vertex_array_object
*DefaultVAO
;
1484 /** The last VAO accessed by a DSA function */
1485 struct gl_vertex_array_object
*LastLookedUpVAO
;
1487 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1488 struct _mesa_HashTable
*Objects
;
1490 GLint ActiveTexture
; /**< Client Active Texture */
1491 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1492 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1495 * \name Primitive restart controls
1497 * Primitive restart is enabled if either \c PrimitiveRestart or
1498 * \c PrimitiveRestartFixedIndex is set.
1501 GLboolean PrimitiveRestart
;
1502 GLboolean PrimitiveRestartFixedIndex
;
1503 GLboolean _PrimitiveRestart
;
1504 GLuint RestartIndex
;
1507 /** One of the DRAW_xxx flags, not consumed by drivers */
1508 gl_draw_method DrawMethod
;
1510 /* GL_ARB_vertex_buffer_object */
1511 struct gl_buffer_object
*ArrayBufferObj
;
1514 * Vertex arrays as consumed by a driver.
1515 * The array pointer is set up only by the VBO module.
1517 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1519 /** Legal array datatypes and the API for which they have been computed */
1520 GLbitfield LegalTypesMask
;
1521 gl_api LegalTypesMaskAPI
;
1526 * Feedback buffer state
1531 GLbitfield _Mask
; /**< FB_* bits */
1539 * Selection buffer state
1543 GLuint
*Buffer
; /**< selection buffer */
1544 GLuint BufferSize
; /**< size of the selection buffer */
1545 GLuint BufferCount
; /**< number of values in the selection buffer */
1546 GLuint Hits
; /**< number of records in the selection buffer */
1547 GLuint NameStackDepth
; /**< name stack depth */
1548 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1549 GLboolean HitFlag
; /**< hit flag */
1550 GLfloat HitMinZ
; /**< minimum hit depth */
1551 GLfloat HitMaxZ
; /**< maximum hit depth */
1556 * 1-D Evaluator control points
1560 GLuint Order
; /**< Number of control points */
1561 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1562 GLfloat
*Points
; /**< Points to contiguous control points */
1567 * 2-D Evaluator control points
1571 GLuint Uorder
; /**< Number of control points in U dimension */
1572 GLuint Vorder
; /**< Number of control points in V dimension */
1575 GLfloat
*Points
; /**< Points to contiguous control points */
1580 * All evaluator control point state
1582 struct gl_evaluators
1588 struct gl_1d_map Map1Vertex3
;
1589 struct gl_1d_map Map1Vertex4
;
1590 struct gl_1d_map Map1Index
;
1591 struct gl_1d_map Map1Color4
;
1592 struct gl_1d_map Map1Normal
;
1593 struct gl_1d_map Map1Texture1
;
1594 struct gl_1d_map Map1Texture2
;
1595 struct gl_1d_map Map1Texture3
;
1596 struct gl_1d_map Map1Texture4
;
1603 struct gl_2d_map Map2Vertex3
;
1604 struct gl_2d_map Map2Vertex4
;
1605 struct gl_2d_map Map2Index
;
1606 struct gl_2d_map Map2Color4
;
1607 struct gl_2d_map Map2Normal
;
1608 struct gl_2d_map Map2Texture1
;
1609 struct gl_2d_map Map2Texture2
;
1610 struct gl_2d_map Map2Texture3
;
1611 struct gl_2d_map Map2Texture4
;
1616 struct gl_transform_feedback_varying_info
1627 * Per-output info vertex shaders for transform feedback.
1629 struct gl_transform_feedback_output
1631 unsigned OutputRegister
;
1632 unsigned OutputBuffer
;
1633 unsigned NumComponents
;
1636 /** offset (in DWORDs) of this output within the interleaved structure */
1640 * Offset into the output register of the data to output. For example,
1641 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1642 * offset is in the y and z components of the output register.
1644 unsigned ComponentOffset
;
1648 struct gl_transform_feedback_buffer
1652 unsigned NumVaryings
;
1655 * Total number of components stored in each buffer. This may be used by
1656 * hardware back-ends to determine the correct stride when interleaving
1657 * multiple transform feedback outputs in the same buffer.
1662 * Which transform feedback stream this buffer binding is associated with.
1668 /** Post-link transform feedback info. */
1669 struct gl_transform_feedback_info
1671 unsigned NumOutputs
;
1673 /* Bitmask of active buffer indices. */
1674 unsigned ActiveBuffers
;
1676 struct gl_transform_feedback_output
*Outputs
;
1678 /** Transform feedback varyings used for the linking of this shader program.
1680 * Use for glGetTransformFeedbackVarying().
1682 struct gl_transform_feedback_varying_info
*Varyings
;
1685 struct gl_transform_feedback_buffer Buffers
[MAX_FEEDBACK_BUFFERS
];
1690 * Transform feedback object state
1692 struct gl_transform_feedback_object
1694 GLuint Name
; /**< AKA the object ID */
1696 GLchar
*Label
; /**< GL_KHR_debug */
1697 GLboolean Active
; /**< Is transform feedback enabled? */
1698 GLboolean Paused
; /**< Is transform feedback paused? */
1699 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1701 GLboolean EverBound
; /**< Has this object been bound? */
1704 * GLES: if Active is true, remaining number of primitives which can be
1705 * rendered without overflow. This is necessary to track because GLES
1706 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1707 * glDrawArraysInstanced would overflow transform feedback buffers.
1708 * Undefined if Active is false.
1710 * Not tracked for desktop GL since it's unnecessary.
1712 unsigned GlesRemainingPrims
;
1715 * The shader program active when BeginTransformFeedback() was called.
1716 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1717 * where stage is the pipeline stage that is the source of data for
1718 * transform feedback.
1720 struct gl_shader_program
*shader_program
;
1722 /** The feedback buffers */
1723 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1724 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1726 /** Start of feedback data in dest buffer */
1727 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1730 * Max data to put into dest buffer (in bytes). Computed based on
1731 * RequestedSize and the actual size of the buffer.
1733 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1736 * Size that was specified when the buffer was bound. If the buffer was
1737 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1740 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1745 * Context state for transform feedback.
1747 struct gl_transform_feedback_state
1749 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1751 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1752 struct gl_buffer_object
*CurrentBuffer
;
1754 /** The table of all transform feedback objects */
1755 struct _mesa_HashTable
*Objects
;
1757 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1758 struct gl_transform_feedback_object
*CurrentObject
;
1760 /** The default xform-fb object (Name==0) */
1761 struct gl_transform_feedback_object
*DefaultObject
;
1766 * A "performance monitor" as described in AMD_performance_monitor.
1768 struct gl_perf_monitor_object
1772 /** True if the monitor is currently active (Begin called but not End). */
1776 * True if the monitor has ended.
1778 * This is distinct from !Active because it may never have began.
1783 * A list of groups with currently active counters.
1785 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1787 unsigned *ActiveGroups
;
1790 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1792 * Checking whether counter 'c' in group 'g' is active can be done via:
1794 * BITSET_TEST(ActiveCounters[g], c)
1796 GLuint
**ActiveCounters
;
1800 union gl_perf_monitor_counter_value
1808 struct gl_perf_monitor_counter
1810 /** Human readable name for the counter. */
1814 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1815 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1819 /** Minimum counter value. */
1820 union gl_perf_monitor_counter_value Minimum
;
1822 /** Maximum counter value. */
1823 union gl_perf_monitor_counter_value Maximum
;
1827 struct gl_perf_monitor_group
1829 /** Human readable name for the group. */
1833 * Maximum number of counters in this group which can be active at the
1836 GLuint MaxActiveCounters
;
1838 /** Array of counters within this group. */
1839 const struct gl_perf_monitor_counter
*Counters
;
1845 * Context state for AMD_performance_monitor.
1847 struct gl_perf_monitor_state
1849 /** Array of performance monitor groups (indexed by group ID) */
1850 const struct gl_perf_monitor_group
*Groups
;
1853 /** The table of all performance monitors. */
1854 struct _mesa_HashTable
*Monitors
;
1859 * Names of the various vertex/fragment program register files, etc.
1861 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1862 * All values should fit in a 4-bit field.
1864 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1865 * considered to be "uniform" variables since they can only be set outside
1866 * glBegin/End. They're also all stored in the same Parameters array.
1870 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1871 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1872 PROGRAM_INPUT
, /**< machine->Inputs[] */
1873 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1874 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1875 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1876 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1877 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1878 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1879 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1880 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1881 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1882 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
1883 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
1884 PROGRAM_MEMORY
, /**< for shared, global and local memory */
1885 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
1891 * Base class for any kind of program object
1898 GLubyte
*String
; /**< Null-terminated program text */
1900 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1901 GLenum Format
; /**< String encoding format */
1903 struct prog_instruction
*Instructions
;
1905 struct nir_shader
*nir
;
1907 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1908 GLbitfield64 DoubleInputsRead
; /**< Bitmask of which input regs are read and are doubles */
1909 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1910 GLbitfield64 OutputsRead
; /**< Bitmask of which output regs are read */
1911 GLbitfield PatchInputsRead
; /**< VAR[0..31] usage for patch inputs (user-defined only) */
1912 GLbitfield PatchOutputsWritten
; /**< VAR[0..31] usage for patch outputs (user-defined only) */
1913 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1914 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1915 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1916 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1918 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
1921 * For vertex and geometry shaders, true if the program uses the
1922 * gl_ClipDistance output. Ignored for fragment shaders.
1924 unsigned ClipDistanceArraySize
;
1925 unsigned CullDistanceArraySize
;
1928 /** Named parameters, constants, etc. from program text */
1929 struct gl_program_parameter_list
*Parameters
;
1932 * Local parameters used by the program.
1934 * It's dynamically allocated because it is rarely used (just
1935 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
1938 GLfloat (*LocalParams
)[4];
1940 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1941 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1943 /** Bitmask of which register files are read/written with indirect
1944 * addressing. Mask of (1 << PROGRAM_x) bits.
1946 GLbitfield IndirectRegisterFiles
;
1948 /** Logical counts */
1950 GLuint NumInstructions
;
1951 GLuint NumTemporaries
;
1952 GLuint NumParameters
;
1953 GLuint NumAttributes
;
1954 GLuint NumAddressRegs
;
1955 GLuint NumAluInstructions
;
1956 GLuint NumTexInstructions
;
1957 GLuint NumTexIndirections
;
1959 /** Native, actual h/w counts */
1961 GLuint NumNativeInstructions
;
1962 GLuint NumNativeTemporaries
;
1963 GLuint NumNativeParameters
;
1964 GLuint NumNativeAttributes
;
1965 GLuint NumNativeAddressRegs
;
1966 GLuint NumNativeAluInstructions
;
1967 GLuint NumNativeTexInstructions
;
1968 GLuint NumNativeTexIndirections
;
1973 /** Vertex program object */
1974 struct gl_vertex_program
1976 struct gl_program Base
; /**< base class */
1977 GLboolean IsPositionInvariant
;
1981 /** Tessellation control program object */
1982 struct gl_tess_ctrl_program
1984 struct gl_program Base
; /**< base class */
1991 /** Tessellation evaluation program object */
1992 struct gl_tess_eval_program
1994 struct gl_program Base
; /**< base class */
1997 GLenum PrimitiveMode
; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
1998 GLenum Spacing
; /* GL_EQUAL, GL_FRACTIONAL_EVEN, GL_FRACTIONAL_ODD */
1999 GLenum VertexOrder
; /* GL_CW or GL_CCW */
2004 /** Geometry program object */
2005 struct gl_geometry_program
2007 struct gl_program Base
; /**< base class */
2012 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2013 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2014 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2015 bool UsesEndPrimitive
;
2020 /** Fragment program object */
2021 struct gl_fragment_program
2023 struct gl_program Base
; /**< base class */
2024 GLboolean UsesKill
; /**< shader uses KIL instruction */
2025 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
2026 GLboolean OriginUpperLeft
;
2027 GLboolean PixelCenterInteger
;
2028 enum gl_frag_depth_layout FragDepthLayout
;
2031 * GLSL interpolation qualifier associated with each fragment shader input.
2032 * For inputs that do not have an interpolation qualifier specified in
2033 * GLSL, the value is INTERP_MODE_NONE.
2035 enum glsl_interp_mode InterpQualifier
[VARYING_SLOT_MAX
];
2038 * Bitfield indicating, for each fragment shader input, 1 if that input
2039 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2041 GLbitfield64 IsCentroid
;
2044 * Bitfield indicating, for each fragment shader input, 1 if that input
2045 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2047 GLbitfield64 IsSample
;
2051 /** Compute program object */
2052 struct gl_compute_program
2054 struct gl_program Base
; /**< base class */
2057 * Size specified using local_size_{x,y,z}.
2059 unsigned LocalSize
[3];
2062 * Size of shared variables accessed by the compute shader.
2064 unsigned SharedSize
;
2069 * State common to vertex and fragment programs.
2071 struct gl_program_state
2073 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2074 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2079 * Context state for vertex programs.
2081 struct gl_vertex_program_state
2083 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2084 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2085 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2086 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2087 /** Computed two sided lighting for fixed function/programs. */
2088 GLboolean _TwoSideEnabled
;
2089 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2091 /** Currently enabled and valid vertex program (including internal
2092 * programs, user-defined vertex programs and GLSL vertex shaders).
2093 * This is the program we must use when rendering.
2095 struct gl_vertex_program
*_Current
;
2097 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2099 /** Should fixed-function T&L be implemented with a vertex prog? */
2100 GLboolean _MaintainTnlProgram
;
2102 /** Program to emulate fixed-function T&L (see above) */
2103 struct gl_vertex_program
*_TnlProgram
;
2105 /** Cache of fixed-function programs */
2106 struct gl_program_cache
*Cache
;
2108 GLboolean _Overriden
;
2112 * Context state for tessellation control programs.
2114 struct gl_tess_ctrl_program_state
2116 /** Currently bound and valid shader. */
2117 struct gl_tess_ctrl_program
*_Current
;
2119 GLint patch_vertices
;
2120 GLfloat patch_default_outer_level
[4];
2121 GLfloat patch_default_inner_level
[2];
2125 * Context state for tessellation evaluation programs.
2127 struct gl_tess_eval_program_state
2129 /** Currently bound and valid shader. */
2130 struct gl_tess_eval_program
*_Current
;
2134 * Context state for geometry programs.
2136 struct gl_geometry_program_state
2138 /** Currently enabled and valid program (including internal programs
2139 * and compiled shader programs).
2141 struct gl_geometry_program
*_Current
;
2145 * Context state for fragment programs.
2147 struct gl_fragment_program_state
2149 GLboolean Enabled
; /**< User-set fragment program enable flag */
2150 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2151 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2153 /** Currently enabled and valid fragment program (including internal
2154 * programs, user-defined fragment programs and GLSL fragment shaders).
2155 * This is the program we must use when rendering.
2157 struct gl_fragment_program
*_Current
;
2159 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2161 /** Should fixed-function texturing be implemented with a fragment prog? */
2162 GLboolean _MaintainTexEnvProgram
;
2164 /** Program to emulate fixed-function texture env/combine (see above) */
2165 struct gl_fragment_program
*_TexEnvProgram
;
2167 /** Cache of fixed-function programs */
2168 struct gl_program_cache
*Cache
;
2173 * Context state for compute programs.
2175 struct gl_compute_program_state
2177 /** Currently enabled and valid program (including internal programs
2178 * and compiled shader programs).
2180 struct gl_compute_program
*_Current
;
2185 * ATI_fragment_shader runtime state
2188 struct atifs_instruction
;
2189 struct atifs_setupinst
;
2192 * ATI fragment shader
2194 struct ati_fragment_shader
2198 struct atifs_instruction
*Instructions
[2];
2199 struct atifs_setupinst
*SetupInst
[2];
2200 GLfloat Constants
[8][4];
2201 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2202 GLubyte numArithInstr
[2];
2203 GLubyte regsAssigned
[2];
2204 GLubyte NumPasses
; /**< 1 or 2 */
2206 GLubyte last_optype
;
2207 GLboolean interpinp1
;
2210 struct gl_program
*Program
;
2214 * Context state for GL_ATI_fragment_shader
2216 struct gl_ati_fragment_shader_state
2219 GLboolean _Enabled
; /**< enabled and valid shader? */
2220 GLboolean Compiling
;
2221 GLfloat GlobalConstants
[8][4];
2222 struct ati_fragment_shader
*Current
;
2226 * Shader subroutine function definition
2228 struct gl_subroutine_function
2232 int num_compat_types
;
2233 const struct glsl_type
**types
;
2237 * Shader information needed by both gl_shader and gl_linked shader.
2239 struct gl_shader_info
2241 bool uses_builtin_functions
;
2242 bool uses_gl_fragcoord
;
2243 bool redeclares_gl_fragcoord
;
2244 bool ARB_fragment_coord_conventions_enable
;
2247 * Fragment shader state from GLSL 1.50 layout qualifiers.
2249 bool origin_upper_left
;
2250 bool pixel_center_integer
;
2253 /** Global xfb_stride out qualifier if any */
2254 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2255 } TransformFeedback
;
2258 * Tessellation Control shader state from layout qualifiers.
2262 * 0 - vertices not declared in shader, or
2263 * 1 .. GL_MAX_PATCH_VERTICES
2269 * Tessellation Evaluation shader state from layout qualifiers.
2273 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2276 GLenum PrimitiveMode
;
2278 * GL_EQUAL, GL_FRACTIONAL_ODD, GL_FRACTIONAL_EVEN, or 0 if it's not set
2283 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2287 * 1, 0, or -1 if it's not set in this shader.
2293 * Geometry shader state from GLSL 1.50 layout qualifiers.
2298 * 0 - Invocations count not declared in shader, or
2299 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2303 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2304 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2309 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2310 * it's not set in this shader.
2316 * Whether early fragment tests are enabled as defined by
2317 * ARB_shader_image_load_store.
2319 bool EarlyFragmentTests
;
2322 * A bitmask of gl_advanced_blend_mode values
2324 GLbitfield BlendSupport
;
2327 * Compute shader state from ARB_compute_shader layout qualifiers.
2331 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2332 * it's not set in this shader.
2334 unsigned LocalSize
[3];
2339 * A linked GLSL shader object.
2341 struct gl_linked_shader
2343 gl_shader_stage Stage
;
2345 struct gl_program
*Program
; /**< Post-compile assembly code */
2348 * \name Sampler tracking
2350 * \note Each of these fields is only set post-linking.
2353 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2354 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2355 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2359 * Map from sampler unit to texture unit (set by glUniform1i())
2361 * A sampler unit is associated with each sampler uniform by the linker.
2362 * The sampler unit associated with each uniform is stored in the
2363 * \c gl_uniform_storage::sampler field.
2365 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2366 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2367 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2370 * Number of default uniform block components used by this shader.
2372 * This field is only set post-linking.
2374 unsigned num_uniform_components
;
2377 * Number of combined uniform components used by this shader.
2379 * This field is only set post-linking. It is the sum of the uniform block
2380 * sizes divided by sizeof(float), and num_uniform_compoennts.
2382 unsigned num_combined_uniform_components
;
2384 unsigned NumUniformBlocks
;
2385 struct gl_uniform_block
**UniformBlocks
;
2387 unsigned NumShaderStorageBlocks
;
2388 struct gl_uniform_block
**ShaderStorageBlocks
;
2390 struct exec_list
*ir
;
2391 struct exec_list
*packed_varyings
;
2392 struct exec_list
*fragdata_arrays
;
2393 struct glsl_symbol_table
*symbols
;
2396 * Map from image uniform index to image unit (set by glUniform1i())
2398 * An image uniform index is associated with each image uniform by
2399 * the linker. The image index associated with each uniform is
2400 * stored in the \c gl_uniform_storage::image field.
2402 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2405 * Access qualifier specified in the shader for each image uniform
2406 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2409 * It may be different, though only more strict than the value of
2410 * \c gl_image_unit::Access for the corresponding image unit.
2412 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2415 * Number of image uniforms defined in the shader. It specifies
2416 * the number of valid elements in the \c ImageUnits and \c
2417 * ImageAccess arrays above.
2421 struct gl_active_atomic_buffer
**AtomicBuffers
;
2422 unsigned NumAtomicBuffers
;
2425 * Number of types for subroutine uniforms.
2427 GLuint NumSubroutineUniformTypes
;
2430 * Subroutine uniform remap table
2431 * based on the program level uniform remap table.
2433 GLuint NumSubroutineUniforms
; /* non-sparse total */
2434 GLuint NumSubroutineUniformRemapTable
;
2435 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
2438 * Num of subroutine functions for this stage
2439 * and storage for them.
2441 GLuint NumSubroutineFunctions
;
2442 GLuint MaxSubroutineFunctionIndex
;
2443 struct gl_subroutine_function
*SubroutineFunctions
;
2445 struct gl_shader_info info
;
2449 * A GLSL shader object.
2453 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2454 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2455 * Must be the first field.
2458 gl_shader_stage Stage
;
2459 GLuint Name
; /**< AKA the handle */
2460 GLint RefCount
; /**< Reference count */
2461 GLchar
*Label
; /**< GL_KHR_debug */
2462 GLboolean DeletePending
;
2463 GLboolean CompileStatus
;
2464 bool IsES
; /**< True if this shader uses GLSL ES */
2466 GLuint SourceChecksum
; /**< for debug/logging purposes */
2467 const GLchar
*Source
; /**< Source code string */
2471 unsigned Version
; /**< GLSL version used for linking */
2473 struct exec_list
*ir
;
2474 struct glsl_symbol_table
*symbols
;
2476 struct gl_shader_info info
;
2480 struct gl_uniform_buffer_variable
2485 * Name of the uniform as seen by glGetUniformIndices.
2487 * glGetUniformIndices requires that the block instance index \b not be
2488 * present in the name of queried uniforms.
2491 * \c gl_uniform_buffer_variable::IndexName and
2492 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2496 const struct glsl_type
*Type
;
2497 unsigned int Offset
;
2502 enum gl_uniform_block_packing
2511 struct gl_uniform_block
2513 /** Declared name of the uniform block */
2516 /** Array of supplemental information about UBO ir_variables. */
2517 struct gl_uniform_buffer_variable
*Uniforms
;
2521 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2522 * with glBindBufferBase to bind a buffer object to this uniform block. When
2523 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2528 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2529 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2531 GLuint UniformBufferSize
;
2533 /** Stages that reference this block */
2537 * Layout specified in the shader
2539 * This isn't accessible through the API, but it is used while
2540 * cross-validating uniform blocks.
2542 enum gl_uniform_block_packing _Packing
;
2546 * Structure that represents a reference to an atomic buffer from some
2549 struct gl_active_atomic_buffer
2551 /** Uniform indices of the atomic counters declared within it. */
2555 /** Binding point index associated with it. */
2558 /** Minimum reasonable size it is expected to have. */
2561 /** Shader stages making use of it. */
2562 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2566 * Data container for shader queries. This holds only the minimal
2567 * amount of required information for resource queries to work.
2569 struct gl_shader_variable
2572 * Declared type of the variable
2574 const struct glsl_type
*type
;
2577 * If the variable is in an interface block, this is the type of the block.
2579 const struct glsl_type
*interface_type
;
2582 * For variables inside structs (possibly recursively), this is the
2583 * outermost struct type.
2585 const struct glsl_type
*outermost_struct_type
;
2588 * Declared name of the variable
2593 * Storage location of the base of this variable
2595 * The precise meaning of this field depends on the nature of the variable.
2597 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2598 * - Vertex shader output: one of the values from \c gl_varying_slot.
2599 * - Geometry shader input: one of the values from \c gl_varying_slot.
2600 * - Geometry shader output: one of the values from \c gl_varying_slot.
2601 * - Fragment shader input: one of the values from \c gl_varying_slot.
2602 * - Fragment shader output: one of the values from \c gl_frag_result.
2603 * - Uniforms: Per-stage uniform slot number for default uniform block.
2604 * - Uniforms: Index within the uniform block definition for UBO members.
2605 * - Non-UBO Uniforms: explicit location until linking then reused to
2606 * store uniform slot number.
2607 * - Other: This field is not currently used.
2609 * If the variable is a uniform, shader input, or shader output, and the
2610 * slot has not been assigned, the value will be -1.
2615 * Specifies the first component the variable is stored in as per
2616 * ARB_enhanced_layouts.
2618 unsigned component
:2;
2621 * Output index for dual source blending.
2624 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2630 * Specifies whether a shader input/output is per-patch in tessellation
2636 * Storage class of the variable.
2638 * \sa (n)ir_variable_mode
2643 * Interpolation mode for shader inputs / outputs
2645 * \sa glsl_interp_mode
2647 unsigned interpolation
:2;
2650 * Was the location explicitly set in the shader?
2652 * If the location is explicitly set in the shader, it \b cannot be changed
2653 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2656 unsigned explicit_location
:1;
2659 * Precision qualifier.
2661 unsigned precision
:2;
2665 * Active resource in a gl_shader_program
2667 struct gl_program_resource
2669 GLenum Type
; /** Program interface type. */
2670 const void *Data
; /** Pointer to resource associated data structure. */
2671 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2675 * A GLSL program object.
2676 * Basically a linked collection of vertex and fragment shaders.
2678 struct gl_shader_program
2680 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2681 GLuint Name
; /**< aka handle or ID */
2682 GLchar
*Label
; /**< GL_KHR_debug */
2683 GLint RefCount
; /**< Reference count */
2684 GLboolean DeletePending
;
2687 * Is the application intending to glGetProgramBinary this program?
2689 GLboolean BinaryRetreivableHint
;
2692 * Indicates whether program can be bound for individual pipeline stages
2693 * using UseProgramStages after it is next linked.
2695 GLboolean SeparateShader
;
2697 GLuint NumShaders
; /**< number of attached shaders */
2698 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2701 * User-defined attribute bindings
2703 * These are set via \c glBindAttribLocation and are used to direct the
2704 * GLSL linker. These are \b not the values used in the compiled shader,
2705 * and they are \b not the values returned by \c glGetAttribLocation.
2707 struct string_to_uint_map
*AttributeBindings
;
2710 * User-defined fragment data bindings
2712 * These are set via \c glBindFragDataLocation and are used to direct the
2713 * GLSL linker. These are \b not the values used in the compiled shader,
2714 * and they are \b not the values returned by \c glGetFragDataLocation.
2716 struct string_to_uint_map
*FragDataBindings
;
2717 struct string_to_uint_map
*FragDataIndexBindings
;
2720 * Transform feedback varyings last specified by
2721 * glTransformFeedbackVaryings().
2723 * For the current set of transform feedback varyings used for transform
2724 * feedback output, see LinkedTransformFeedback.
2728 /** Global xfb_stride out qualifier if any */
2729 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2731 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2732 } TransformFeedback
;
2734 /** Post-link transform feedback info. */
2735 struct gl_transform_feedback_info LinkedTransformFeedback
;
2737 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2738 enum gl_frag_depth_layout FragDepthLayout
;
2741 * Tessellation Evaluation shader state from layout qualifiers.
2745 * True if gl_ClipDistance is written to. Copied into
2746 * gl_tess_eval_program by _mesa_copy_linked_program_data().
2748 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2749 0 if not present. */
2750 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2751 0 if not present. */
2755 * Geometry shader state - copied into gl_geometry_program by
2756 * _mesa_copy_linked_program_data().
2762 * True if gl_ClipDistance is written to. Copied into
2763 * gl_geometry_program by _mesa_copy_linked_program_data().
2765 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2766 0 if not present. */
2767 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2768 0 if not present. */
2769 bool UsesEndPrimitive
;
2773 /** Vertex shader state */
2776 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2777 * by _mesa_copy_linked_program_data().
2779 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2780 0 if not present. */
2781 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2782 0 if not present. */
2786 * Compute shader state - copied into gl_compute_program by
2787 * _mesa_copy_linked_program_data().
2791 * If this shader contains a compute stage, size specified using
2792 * local_size_{x,y,z}. Otherwise undefined.
2794 unsigned LocalSize
[3];
2796 * Size of shared variables accessed by the compute shader.
2798 unsigned SharedSize
;
2801 /* post-link info: */
2802 unsigned NumUniformStorage
;
2803 unsigned NumHiddenUniforms
;
2804 struct gl_uniform_storage
*UniformStorage
;
2807 * Mapping from GL uniform locations returned by \c glUniformLocation to
2808 * UniformStorage entries. Arrays will have multiple contiguous slots
2809 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2811 unsigned NumUniformRemapTable
;
2812 struct gl_uniform_storage
**UniformRemapTable
;
2815 * Sometimes there are empty slots left over in UniformRemapTable after we
2816 * allocate slots to explicit locations. This list stores the blocks of
2817 * continuous empty slots inside UniformRemapTable.
2819 struct exec_list EmptyUniformLocations
;
2822 * Size of the gl_ClipDistance array that is output from the last pipeline
2823 * stage before the fragment shader.
2825 unsigned LastClipDistanceArraySize
;
2826 unsigned LastCullDistanceArraySize
;
2828 unsigned NumUniformBlocks
;
2829 struct gl_uniform_block
*UniformBlocks
;
2831 unsigned NumShaderStorageBlocks
;
2832 struct gl_uniform_block
*ShaderStorageBlocks
;
2835 * Map of active uniform names to locations
2837 * Maps any active uniform that is not an array element to a location.
2838 * Each active uniform, including individual structure members will appear
2839 * in this map. This roughly corresponds to the set of names that would be
2840 * enumerated by \c glGetActiveUniform.
2842 struct string_to_uint_map
*UniformHash
;
2844 struct gl_active_atomic_buffer
*AtomicBuffers
;
2845 unsigned NumAtomicBuffers
;
2847 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2848 GLboolean Validated
;
2849 GLboolean _Used
; /**< Ever used for drawing? */
2850 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2853 unsigned Version
; /**< GLSL version used for linking */
2854 bool IsES
; /**< True if this program uses GLSL ES */
2857 * Per-stage shaders resulting from the first stage of linking.
2859 * Set of linked shaders for this program. The array is accessed using the
2860 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2863 struct gl_linked_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2865 /** List of all active resources after linking. */
2866 struct gl_program_resource
*ProgramResourceList
;
2867 unsigned NumProgramResourceList
;
2869 /* True if any of the fragment shaders attached to this program use:
2870 * #extension ARB_fragment_coord_conventions: enable
2872 GLboolean ARB_fragment_coord_conventions_enable
;
2876 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2877 #define GLSL_LOG 0x2 /**< Write shaders to files */
2878 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2879 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2880 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2881 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2882 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2883 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2884 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2885 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2889 * Context state for GLSL vertex/fragment shaders.
2890 * Extended to support pipeline object
2892 struct gl_pipeline_object
2894 /** Name of the pipeline object as received from glGenProgramPipelines.
2895 * It would be 0 for shaders without separate shader objects.
2903 GLchar
*Label
; /**< GL_KHR_debug */
2906 * Programs used for rendering
2908 * There is a separate program set for each shader stage.
2910 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2912 struct gl_shader_program
*_CurrentFragmentProgram
;
2915 * Program used by glUniform calls.
2917 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2919 struct gl_shader_program
*ActiveProgram
;
2921 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2923 GLboolean EverBound
; /**< Has the pipeline object been created */
2925 GLboolean Validated
; /**< Pipeline Validation status */
2931 * Context state for GLSL pipeline shaders.
2933 struct gl_pipeline_shader_state
2935 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2936 struct gl_pipeline_object
*Current
;
2938 /* Default Object to ensure that _Shader is never NULL */
2939 struct gl_pipeline_object
*Default
;
2941 /** Pipeline objects */
2942 struct _mesa_HashTable
*Objects
;
2946 * Compiler options for a single GLSL shaders type
2948 struct gl_shader_compiler_options
2950 /** Driver-selectable options: */
2951 GLboolean EmitNoLoops
;
2952 GLboolean EmitNoFunctions
;
2953 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2954 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2955 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2956 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2957 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2958 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
2959 * gl_CullDistance together from
2960 * float[8] to vec4[2]
2964 * \name Forms of indirect addressing the driver cannot do.
2967 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2968 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2969 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2970 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2971 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
2974 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2975 GLuint MaxUnrollIterations
;
2978 * Optimize code for array of structures backends.
2980 * This is a proxy for:
2981 * - preferring DP4 instructions (rather than MUL/MAD) for
2982 * matrix * vector operations, such as position transformation.
2984 GLboolean OptimizeForAOS
;
2986 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
2988 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
2989 GLboolean ClampBlockIndicesToArrayBounds
;
2991 GLboolean LowerShaderSharedVariables
; /**< Lower compute shader shared
2992 * variable access to intrinsics. */
2994 const struct nir_shader_compiler_options
*NirOptions
;
2999 * Occlusion/timer query object.
3001 struct gl_query_object
3003 GLenum Target
; /**< The query target, when active */
3004 GLuint Id
; /**< hash table ID/name */
3005 GLchar
*Label
; /**< GL_KHR_debug */
3006 GLuint64EXT Result
; /**< the counter */
3007 GLboolean Active
; /**< inside Begin/EndQuery */
3008 GLboolean Ready
; /**< result is ready? */
3009 GLboolean EverBound
;/**< has query object ever been bound */
3010 GLuint Stream
; /**< The stream */
3015 * Context state for query objects.
3017 struct gl_query_state
3019 struct _mesa_HashTable
*QueryObjects
;
3020 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
3021 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
3023 /** GL_NV_conditional_render */
3024 struct gl_query_object
*CondRenderQuery
;
3026 /** GL_EXT_transform_feedback */
3027 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
3028 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
3030 /** GL_ARB_timer_query */
3031 struct gl_query_object
*TimeElapsed
;
3033 /** GL_ARB_pipeline_statistics_query */
3034 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3036 GLenum CondRenderMode
;
3040 /** Sync object state */
3041 struct gl_sync_object
3043 GLenum Type
; /**< GL_SYNC_FENCE */
3044 GLuint Name
; /**< Fence name */
3045 GLchar
*Label
; /**< GL_KHR_debug */
3046 GLint RefCount
; /**< Reference count */
3047 GLboolean DeletePending
; /**< Object was deleted while there were still
3048 * live references (e.g., sync not yet finished)
3050 GLenum SyncCondition
;
3051 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3052 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3057 * State which can be shared by multiple contexts:
3059 struct gl_shared_state
3061 mtx_t Mutex
; /**< for thread safety */
3062 GLint RefCount
; /**< Reference count */
3063 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3064 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3065 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3067 /** Default texture objects (shared by all texture units) */
3068 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3070 /** Fallback texture used when a bound texture is incomplete */
3071 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3074 * \name Thread safety and statechange notification for texture
3077 * \todo Improve the granularity of locking.
3080 mtx_t TexMutex
; /**< texobj thread safety */
3081 GLuint TextureStateStamp
; /**< state notification for shared tex */
3084 /** Default buffer object for vertex arrays that aren't in VBOs */
3085 struct gl_buffer_object
*NullBufferObj
;
3088 * \name Vertex/geometry/fragment programs
3091 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3092 struct gl_vertex_program
*DefaultVertexProgram
;
3093 struct gl_fragment_program
*DefaultFragmentProgram
;
3096 /* GL_ATI_fragment_shader */
3097 struct _mesa_HashTable
*ATIShaders
;
3098 struct ati_fragment_shader
*DefaultFragmentShader
;
3100 struct _mesa_HashTable
*BufferObjects
;
3102 /** Table of both gl_shader and gl_shader_program objects */
3103 struct _mesa_HashTable
*ShaderObjects
;
3105 /* GL_EXT_framebuffer_object */
3106 struct _mesa_HashTable
*RenderBuffers
;
3107 struct _mesa_HashTable
*FrameBuffers
;
3110 struct set
*SyncObjects
;
3112 /** GL_ARB_sampler_objects */
3113 struct _mesa_HashTable
*SamplerObjects
;
3116 * Some context in this share group was affected by a GPU reset
3118 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3119 * been affected by a GPU reset must also return
3120 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3122 * Once this field becomes true, it is never reset to false.
3124 bool ShareGroupReset
;
3130 * Renderbuffers represent drawing surfaces such as color, depth and/or
3131 * stencil. A framebuffer object has a set of renderbuffers.
3132 * Drivers will typically derive subclasses of this type.
3134 struct gl_renderbuffer
3136 mtx_t Mutex
; /**< for thread safety */
3137 GLuint ClassID
; /**< Useful for drivers */
3139 GLchar
*Label
; /**< GL_KHR_debug */
3141 GLuint Width
, Height
;
3143 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3144 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3146 * True for renderbuffers that wrap textures, giving the driver a chance to
3147 * flush render caches through the FinishRenderTexture hook.
3149 * Drivers may also set this on renderbuffers other than those generated by
3150 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3151 * called without a rb->TexImage.
3153 GLboolean NeedsFinishRenderTexture
;
3155 GLenum InternalFormat
; /**< The user-specified format */
3156 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3157 GL_STENCIL_INDEX. */
3158 mesa_format Format
; /**< The actual renderbuffer memory format */
3160 * Pointer to the texture image if this renderbuffer wraps a texture,
3163 * Note that the reference on the gl_texture_object containing this
3164 * TexImage is held by the gl_renderbuffer_attachment.
3166 struct gl_texture_image
*TexImage
;
3168 /** Delete this renderbuffer */
3169 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3171 /** Allocate new storage for this renderbuffer */
3172 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3173 struct gl_renderbuffer
*rb
,
3174 GLenum internalFormat
,
3175 GLuint width
, GLuint height
);
3180 * A renderbuffer attachment points to either a texture object (and specifies
3181 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3183 struct gl_renderbuffer_attachment
3185 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3189 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3190 * application supplied renderbuffer object.
3192 struct gl_renderbuffer
*Renderbuffer
;
3195 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3196 * supplied texture object.
3198 struct gl_texture_object
*Texture
;
3199 GLuint TextureLevel
; /**< Attached mipmap level. */
3200 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3201 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3202 * and 2D array textures */
3208 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3209 * In C++ terms, think of this as a base class from which device drivers
3210 * will make derived classes.
3212 struct gl_framebuffer
3214 mtx_t Mutex
; /**< for thread safety */
3216 * If zero, this is a window system framebuffer. If non-zero, this
3217 * is a FBO framebuffer; note that for some devices (i.e. those with
3218 * a natural pixel coordinate system for FBOs that differs from the
3219 * OpenGL/Mesa coordinate system), this means that the viewport,
3220 * polygon face orientation, and polygon stipple will have to be inverted.
3225 GLchar
*Label
; /**< GL_KHR_debug */
3227 GLboolean DeletePending
;
3230 * The framebuffer's visual. Immutable if this is a window system buffer.
3231 * Computed from attachments if user-made FBO.
3233 struct gl_config Visual
;
3236 * Size of frame buffer in pixels. If there are no attachments, then both
3239 GLuint Width
, Height
;
3242 * In the case that the framebuffer has no attachment (i.e.
3243 * GL_ARB_framebuffer_no_attachments) then the geometry of
3244 * the framebuffer is specified by the default values.
3247 GLuint Width
, Height
, Layers
, NumSamples
;
3248 GLboolean FixedSampleLocations
;
3249 /* Derived from NumSamples by the driver so that it can choose a valid
3250 * value for the hardware.
3255 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3256 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3257 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3264 /** \name Derived Z buffer stuff */
3266 GLuint _DepthMax
; /**< Max depth buffer value */
3267 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3268 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3271 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3274 /** Whether one of Attachment has Type != GL_NONE
3275 * NOTE: the values for Width and Height are set to 0 in case of having
3276 * no attachments, a backend driver supporting the extension
3277 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3278 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3279 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3280 * _Ymax do NOT take into account _HasAttachments being false). To get the
3281 * geometry of the framebuffer, the helper functions
3282 * _mesa_geometric_width(),
3283 * _mesa_geometric_height(),
3284 * _mesa_geometric_samples() and
3285 * _mesa_geometric_layers()
3286 * are available that check _HasAttachments.
3288 bool _HasAttachments
;
3290 /** Integer color values */
3291 GLboolean _IntegerColor
;
3293 /* ARB_color_buffer_float */
3294 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3295 GLboolean _HasSNormOrFloatColorBuffer
;
3298 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3299 * is not layered. For cube maps and cube map arrays, each cube face
3300 * counts as a layer. As the case for Width, Height a backend driver
3301 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3302 * in the case that _HasAttachments is false
3304 GLuint MaxNumLayers
;
3306 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3307 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3309 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3310 * attribute group and GL_PIXEL attribute group, respectively.
3312 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3313 GLenum ColorReadBuffer
;
3315 /** Computed from ColorDraw/ReadBuffer above */
3316 GLuint _NumColorDrawBuffers
;
3317 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3318 GLint _ColorReadBufferIndex
; /* -1 = None */
3319 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3320 struct gl_renderbuffer
*_ColorReadBuffer
;
3322 /** Delete this framebuffer */
3323 void (*Delete
)(struct gl_framebuffer
*fb
);
3328 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3332 GLushort RangeMin
; /**< min value exponent */
3333 GLushort RangeMax
; /**< max value exponent */
3334 GLushort Precision
; /**< number of mantissa bits */
3339 * Limits for vertex, geometry and fragment programs/shaders.
3341 struct gl_program_constants
3343 /* logical limits */
3344 GLuint MaxInstructions
;
3345 GLuint MaxAluInstructions
;
3346 GLuint MaxTexInstructions
;
3347 GLuint MaxTexIndirections
;
3350 GLuint MaxAddressRegs
;
3351 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3352 GLuint MaxParameters
;
3353 GLuint MaxLocalParams
;
3354 GLuint MaxEnvParams
;
3355 /* native/hardware limits */
3356 GLuint MaxNativeInstructions
;
3357 GLuint MaxNativeAluInstructions
;
3358 GLuint MaxNativeTexInstructions
;
3359 GLuint MaxNativeTexIndirections
;
3360 GLuint MaxNativeAttribs
;
3361 GLuint MaxNativeTemps
;
3362 GLuint MaxNativeAddressRegs
;
3363 GLuint MaxNativeParameters
;
3365 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3368 * \name Per-stage input / output limits
3370 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3371 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3372 * ES). This is stored as \c gl_constants::MaxVarying.
3374 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3375 * variables. Each stage as a certain number of outputs that it can feed
3376 * to the next stage and a certain number inputs that it can consume from
3377 * the previous stage.
3379 * Vertex shader inputs do not participate this in this accounting.
3380 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3382 * Fragment shader outputs do not participate this in this accounting.
3383 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3386 GLuint MaxInputComponents
;
3387 GLuint MaxOutputComponents
;
3390 /* ES 2.0 and GL_ARB_ES2_compatibility */
3391 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3392 struct gl_precision LowInt
, MediumInt
, HighInt
;
3393 /* GL_ARB_uniform_buffer_object */
3394 GLuint MaxUniformBlocks
;
3395 GLuint MaxCombinedUniformComponents
;
3396 GLuint MaxTextureImageUnits
;
3398 /* GL_ARB_shader_atomic_counters */
3399 GLuint MaxAtomicBuffers
;
3400 GLuint MaxAtomicCounters
;
3402 /* GL_ARB_shader_image_load_store */
3403 GLuint MaxImageUniforms
;
3405 /* GL_ARB_shader_storage_buffer_object */
3406 GLuint MaxShaderStorageBlocks
;
3411 * Constants which may be overridden by device driver during context creation
3412 * but are never changed after that.
3416 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3417 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3418 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3419 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3420 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3421 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3422 GLuint MaxTextureCoordUnits
;
3423 GLuint MaxCombinedTextureImageUnits
;
3424 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3425 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3426 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3427 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3429 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3431 GLuint MaxArrayLockSize
;
3435 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3436 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3437 GLfloat PointSizeGranularity
;
3438 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3439 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3440 GLfloat LineWidthGranularity
;
3442 GLuint MaxClipPlanes
;
3444 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3445 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3447 GLuint MaxViewportWidth
, MaxViewportHeight
;
3448 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3449 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3453 } ViewportBounds
; /**< GL_ARB_viewport_array */
3454 GLuint MaxWindowRectangles
; /**< GL_EXT_window_rectangles */
3456 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3457 GLuint MaxProgramMatrices
;
3458 GLuint MaxProgramMatrixStackDepth
;
3461 GLuint SamplesPassed
;
3464 GLuint PrimitivesGenerated
;
3465 GLuint PrimitivesWritten
;
3466 GLuint VerticesSubmitted
;
3467 GLuint PrimitivesSubmitted
;
3468 GLuint VsInvocations
;
3470 GLuint TessInvocations
;
3471 GLuint GsInvocations
;
3472 GLuint GsPrimitives
;
3473 GLuint FsInvocations
;
3474 GLuint ComputeInvocations
;
3475 GLuint ClInPrimitives
;
3476 GLuint ClOutPrimitives
;
3479 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3481 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3482 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3483 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3486 * GL_ARB_framebuffer_no_attachments
3488 GLuint MaxFramebufferWidth
;
3489 GLuint MaxFramebufferHeight
;
3490 GLuint MaxFramebufferLayers
;
3491 GLuint MaxFramebufferSamples
;
3493 /** Number of varying vectors between any two shader stages. */
3497 * GL_ARB_uniform_buffer_object
3499 GLuint MaxCombinedUniformBlocks
;
3500 GLuint MaxUniformBufferBindings
;
3501 GLuint MaxUniformBlockSize
;
3502 GLuint UniformBufferOffsetAlignment
;
3506 * GL_ARB_shader_storage_buffer_object
3508 GLuint MaxCombinedShaderStorageBlocks
;
3509 GLuint MaxShaderStorageBufferBindings
;
3510 GLuint MaxShaderStorageBlockSize
;
3511 GLuint ShaderStorageBufferOffsetAlignment
;
3515 * GL_ARB_explicit_uniform_location
3517 GLuint MaxUserAssignableUniformLocations
;
3519 /** geometry shader */
3520 GLuint MaxGeometryOutputVertices
;
3521 GLuint MaxGeometryTotalOutputComponents
;
3523 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3526 * Changes default GLSL extension behavior from "error" to "warn". It's out
3527 * of spec, but it can make some apps work that otherwise wouldn't.
3529 GLboolean ForceGLSLExtensionsWarn
;
3532 * If non-zero, forces GLSL shaders to behave as if they began
3533 * with "#version ForceGLSLVersion".
3535 GLuint ForceGLSLVersion
;
3538 * Allow GLSL #extension directives in the middle of shaders.
3540 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3543 * Force uninitialized variables to default to zero.
3545 GLboolean GLSLZeroInit
;
3548 * Does the driver support real 32-bit integers? (Otherwise, integers are
3549 * simulated via floats.)
3551 GLboolean NativeIntegers
;
3554 * Does VertexID count from zero or from base vertex?
3557 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3558 * ignored and need not be set.
3560 bool VertexID_is_zero_based
;
3563 * If the driver supports real 32-bit integers, what integer value should be
3564 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3566 GLuint UniformBooleanTrue
;
3569 * Maximum amount of time, measured in nanseconds, that the server can wait.
3571 GLuint64 MaxServerWaitTimeout
;
3573 /** GL_EXT_provoking_vertex */
3574 GLboolean QuadsFollowProvokingVertexConvention
;
3576 /** GL_ARB_viewport_array */
3577 GLenum LayerAndVPIndexProvokingVertex
;
3579 /** OpenGL version 3.0 */
3580 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3582 /** OpenGL version 3.2 */
3583 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3585 /** OpenGL version 4.4 */
3586 GLuint MaxVertexAttribStride
;
3588 /** GL_EXT_transform_feedback */
3589 GLuint MaxTransformFeedbackBuffers
;
3590 GLuint MaxTransformFeedbackSeparateComponents
;
3591 GLuint MaxTransformFeedbackInterleavedComponents
;
3592 GLuint MaxVertexStreams
;
3594 /** GL_EXT_gpu_shader4 */
3595 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3597 /** GL_ARB_texture_gather */
3598 GLuint MinProgramTextureGatherOffset
;
3599 GLuint MaxProgramTextureGatherOffset
;
3600 GLuint MaxProgramTextureGatherComponents
;
3602 /* GL_ARB_robustness */
3603 GLenum ResetStrategy
;
3605 /* GL_ARB_blend_func_extended */
3606 GLuint MaxDualSourceDrawBuffers
;
3609 * Whether the implementation strips out and ignores texture borders.
3611 * Many GPU hardware implementations don't support rendering with texture
3612 * borders and mipmapped textures. (Note: not static border color, but the
3613 * old 1-pixel border around each edge). Implementations then have to do
3614 * slow fallbacks to be correct, or just ignore the border and be fast but
3615 * wrong. Setting the flag strips the border off of TexImage calls,
3616 * providing "fast but wrong" at significantly reduced driver complexity.
3618 * Texture borders are deprecated in GL 3.0.
3620 GLboolean StripTextureBorder
;
3623 * For drivers which can do a better job at eliminating unused uniforms
3624 * than the GLSL compiler.
3626 * XXX Remove these as soon as a better solution is available.
3628 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3630 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3631 bool GLSLFragCoordIsSysVal
;
3632 bool GLSLFrontFacingIsSysVal
;
3635 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3636 * than passing the transform feedback object to the drawing function.
3638 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3640 /** GL_ARB_map_buffer_alignment */
3641 GLuint MinMapBufferAlignment
;
3644 * Disable varying packing. This is out of spec, but potentially useful
3645 * for older platforms that supports a limited number of texture
3646 * indirections--on these platforms, unpacking the varyings in the fragment
3647 * shader increases the number of texture indirections by 1, which might
3648 * make some shaders not executable at all.
3650 * Drivers that support transform feedback must set this value to GL_FALSE.
3652 GLboolean DisableVaryingPacking
;
3655 * Should meaningful names be generated for compiler temporary variables?
3657 * Generally, it is not useful to have the compiler generate "meaningful"
3658 * names for temporary variables that it creates. This can, however, be a
3659 * useful debugging aid. In Mesa debug builds or release builds when
3660 * MESA_GLSL is set at run-time, meaningful names will be generated.
3661 * Drivers can also force names to be generated by setting this field.
3662 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3663 * vertex shader assembly) is set at run-time.
3665 bool GenerateTemporaryNames
;
3668 * Maximum value supported for an index in DrawElements and friends.
3670 * This must be at least (1ull<<24)-1. The default value is
3673 * \since ES 3.0 or GL_ARB_ES3_compatibility
3674 * \sa _mesa_init_constants
3676 GLuint64 MaxElementIndex
;
3679 * Disable interpretation of line continuations (lines ending with a
3680 * backslash character ('\') in GLSL source.
3682 GLboolean DisableGLSLLineContinuations
;
3684 /** GL_ARB_texture_multisample */
3685 GLint MaxColorTextureSamples
;
3686 GLint MaxDepthTextureSamples
;
3687 GLint MaxIntegerSamples
;
3690 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3691 * samples are laid out in a rectangular grid roughly corresponding to
3692 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3693 * are used to map indices of rectangular grid to sample numbers within
3694 * a pixel. This mapping of indices to sample numbers must be initialized
3695 * by the driver for the target hardware. For example, if we have the 8X
3696 * MSAA sample number layout (sample positions) for XYZ hardware:
3698 * sample indices layout sample number layout
3699 * --------- ---------
3700 * | 0 | 1 | | a | b |
3701 * --------- ---------
3702 * | 2 | 3 | | c | d |
3703 * --------- ---------
3704 * | 4 | 5 | | e | f |
3705 * --------- ---------
3706 * | 6 | 7 | | g | h |
3707 * --------- ---------
3709 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3711 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3713 * SampleMap8x = {a, b, c, d, e, f, g, h};
3715 * Follow the logic for sample counts 2-8.
3717 * For 16x the sample indices layout as a 4x4 grid as follows:
3729 uint8_t SampleMap2x
[2];
3730 uint8_t SampleMap4x
[4];
3731 uint8_t SampleMap8x
[8];
3732 uint8_t SampleMap16x
[16];
3734 /** GL_ARB_shader_atomic_counters */
3735 GLuint MaxAtomicBufferBindings
;
3736 GLuint MaxAtomicBufferSize
;
3737 GLuint MaxCombinedAtomicBuffers
;
3738 GLuint MaxCombinedAtomicCounters
;
3740 /** GL_ARB_vertex_attrib_binding */
3741 GLint MaxVertexAttribRelativeOffset
;
3742 GLint MaxVertexAttribBindings
;
3744 /* GL_ARB_shader_image_load_store */
3745 GLuint MaxImageUnits
;
3746 GLuint MaxCombinedShaderOutputResources
;
3747 GLuint MaxImageSamples
;
3748 GLuint MaxCombinedImageUniforms
;
3750 /** GL_ARB_compute_shader */
3751 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3752 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3753 GLuint MaxComputeWorkGroupInvocations
;
3754 GLuint MaxComputeSharedMemorySize
;
3756 /** GL_ARB_gpu_shader5 */
3757 GLfloat MinFragmentInterpolationOffset
;
3758 GLfloat MaxFragmentInterpolationOffset
;
3760 GLboolean FakeSWMSAA
;
3762 /** GL_KHR_context_flush_control */
3763 GLenum ContextReleaseBehavior
;
3765 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3767 /** GL_ARB_tessellation_shader */
3768 GLuint MaxPatchVertices
;
3769 GLuint MaxTessGenLevel
;
3770 GLuint MaxTessPatchComponents
;
3771 GLuint MaxTessControlTotalOutputComponents
;
3772 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3773 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3774 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3775 bool PrimitiveRestartForPatches
;
3776 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3777 * gl_LocalInvocationIndex based on
3778 * other builtin variables. */
3783 * Enable flag for each OpenGL extension. Different device drivers will
3784 * enable different extensions at runtime.
3786 struct gl_extensions
3788 GLboolean dummy
; /* don't remove this! */
3789 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3790 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3791 GLboolean ANGLE_texture_compression_dxt
;
3792 GLboolean ARB_ES2_compatibility
;
3793 GLboolean ARB_ES3_compatibility
;
3794 GLboolean ARB_ES3_1_compatibility
;
3795 GLboolean ARB_ES3_2_compatibility
;
3796 GLboolean ARB_arrays_of_arrays
;
3797 GLboolean ARB_base_instance
;
3798 GLboolean ARB_blend_func_extended
;
3799 GLboolean ARB_buffer_storage
;
3800 GLboolean ARB_clear_texture
;
3801 GLboolean ARB_clip_control
;
3802 GLboolean ARB_color_buffer_float
;
3803 GLboolean ARB_compute_shader
;
3804 GLboolean ARB_conditional_render_inverted
;
3805 GLboolean ARB_conservative_depth
;
3806 GLboolean ARB_copy_image
;
3807 GLboolean ARB_cull_distance
;
3808 GLboolean ARB_depth_buffer_float
;
3809 GLboolean ARB_depth_clamp
;
3810 GLboolean ARB_depth_texture
;
3811 GLboolean ARB_derivative_control
;
3812 GLboolean ARB_draw_buffers_blend
;
3813 GLboolean ARB_draw_elements_base_vertex
;
3814 GLboolean ARB_draw_indirect
;
3815 GLboolean ARB_draw_instanced
;
3816 GLboolean ARB_fragment_coord_conventions
;
3817 GLboolean ARB_fragment_layer_viewport
;
3818 GLboolean ARB_fragment_program
;
3819 GLboolean ARB_fragment_program_shadow
;
3820 GLboolean ARB_fragment_shader
;
3821 GLboolean ARB_framebuffer_no_attachments
;
3822 GLboolean ARB_framebuffer_object
;
3823 GLboolean ARB_enhanced_layouts
;
3824 GLboolean ARB_explicit_attrib_location
;
3825 GLboolean ARB_explicit_uniform_location
;
3826 GLboolean ARB_gpu_shader5
;
3827 GLboolean ARB_gpu_shader_fp64
;
3828 GLboolean ARB_half_float_vertex
;
3829 GLboolean ARB_indirect_parameters
;
3830 GLboolean ARB_instanced_arrays
;
3831 GLboolean ARB_internalformat_query
;
3832 GLboolean ARB_internalformat_query2
;
3833 GLboolean ARB_map_buffer_range
;
3834 GLboolean ARB_occlusion_query
;
3835 GLboolean ARB_occlusion_query2
;
3836 GLboolean ARB_pipeline_statistics_query
;
3837 GLboolean ARB_point_sprite
;
3838 GLboolean ARB_query_buffer_object
;
3839 GLboolean ARB_robust_buffer_access_behavior
;
3840 GLboolean ARB_sample_shading
;
3841 GLboolean ARB_seamless_cube_map
;
3842 GLboolean ARB_shader_atomic_counter_ops
;
3843 GLboolean ARB_shader_atomic_counters
;
3844 GLboolean ARB_shader_bit_encoding
;
3845 GLboolean ARB_shader_clock
;
3846 GLboolean ARB_shader_draw_parameters
;
3847 GLboolean ARB_shader_group_vote
;
3848 GLboolean ARB_shader_image_load_store
;
3849 GLboolean ARB_shader_image_size
;
3850 GLboolean ARB_shader_precision
;
3851 GLboolean ARB_shader_stencil_export
;
3852 GLboolean ARB_shader_storage_buffer_object
;
3853 GLboolean ARB_shader_subroutine
;
3854 GLboolean ARB_shader_texture_image_samples
;
3855 GLboolean ARB_shader_texture_lod
;
3856 GLboolean ARB_shading_language_packing
;
3857 GLboolean ARB_shading_language_420pack
;
3858 GLboolean ARB_shadow
;
3859 GLboolean ARB_stencil_texturing
;
3861 GLboolean ARB_tessellation_shader
;
3862 GLboolean ARB_texture_border_clamp
;
3863 GLboolean ARB_texture_buffer_object
;
3864 GLboolean ARB_texture_buffer_object_rgb32
;
3865 GLboolean ARB_texture_buffer_range
;
3866 GLboolean ARB_texture_compression_bptc
;
3867 GLboolean ARB_texture_compression_rgtc
;
3868 GLboolean ARB_texture_cube_map
;
3869 GLboolean ARB_texture_cube_map_array
;
3870 GLboolean ARB_texture_env_combine
;
3871 GLboolean ARB_texture_env_crossbar
;
3872 GLboolean ARB_texture_env_dot3
;
3873 GLboolean ARB_texture_float
;
3874 GLboolean ARB_texture_gather
;
3875 GLboolean ARB_texture_mirror_clamp_to_edge
;
3876 GLboolean ARB_texture_multisample
;
3877 GLboolean ARB_texture_non_power_of_two
;
3878 GLboolean ARB_texture_stencil8
;
3879 GLboolean ARB_texture_query_levels
;
3880 GLboolean ARB_texture_query_lod
;
3881 GLboolean ARB_texture_rg
;
3882 GLboolean ARB_texture_rgb10_a2ui
;
3883 GLboolean ARB_texture_view
;
3884 GLboolean ARB_timer_query
;
3885 GLboolean ARB_transform_feedback2
;
3886 GLboolean ARB_transform_feedback3
;
3887 GLboolean ARB_transform_feedback_instanced
;
3888 GLboolean ARB_uniform_buffer_object
;
3889 GLboolean ARB_vertex_attrib_64bit
;
3890 GLboolean ARB_vertex_program
;
3891 GLboolean ARB_vertex_shader
;
3892 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3893 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3894 GLboolean ARB_viewport_array
;
3895 GLboolean EXT_blend_color
;
3896 GLboolean EXT_blend_equation_separate
;
3897 GLboolean EXT_blend_func_separate
;
3898 GLboolean EXT_blend_minmax
;
3899 GLboolean EXT_depth_bounds_test
;
3900 GLboolean EXT_draw_buffers2
;
3901 GLboolean EXT_framebuffer_multisample
;
3902 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3903 GLboolean EXT_framebuffer_sRGB
;
3904 GLboolean EXT_gpu_program_parameters
;
3905 GLboolean EXT_gpu_shader4
;
3906 GLboolean EXT_packed_float
;
3907 GLboolean EXT_pixel_buffer_object
;
3908 GLboolean EXT_point_parameters
;
3909 GLboolean EXT_polygon_offset_clamp
;
3910 GLboolean EXT_provoking_vertex
;
3911 GLboolean EXT_shader_integer_mix
;
3912 GLboolean EXT_shader_samples_identical
;
3913 GLboolean EXT_stencil_two_side
;
3914 GLboolean EXT_texture_array
;
3915 GLboolean EXT_texture_compression_latc
;
3916 GLboolean EXT_texture_compression_s3tc
;
3917 GLboolean EXT_texture_env_dot3
;
3918 GLboolean EXT_texture_filter_anisotropic
;
3919 GLboolean EXT_texture_integer
;
3920 GLboolean EXT_texture_mirror_clamp
;
3921 GLboolean EXT_texture_shared_exponent
;
3922 GLboolean EXT_texture_snorm
;
3923 GLboolean EXT_texture_sRGB
;
3924 GLboolean EXT_texture_sRGB_decode
;
3925 GLboolean EXT_texture_swizzle
;
3926 GLboolean EXT_transform_feedback
;
3927 GLboolean EXT_timer_query
;
3928 GLboolean EXT_vertex_array_bgra
;
3929 GLboolean EXT_window_rectangles
;
3930 GLboolean OES_copy_image
;
3931 GLboolean OES_sample_variables
;
3932 GLboolean OES_shader_io_blocks
;
3933 GLboolean OES_standard_derivatives
;
3934 GLboolean OES_texture_buffer
;
3935 /* vendor extensions */
3936 GLboolean AMD_performance_monitor
;
3937 GLboolean AMD_pinned_memory
;
3938 GLboolean AMD_seamless_cubemap_per_texture
;
3939 GLboolean AMD_vertex_shader_layer
;
3940 GLboolean AMD_vertex_shader_viewport_index
;
3941 GLboolean APPLE_object_purgeable
;
3942 GLboolean ATI_meminfo
;
3943 GLboolean ATI_texture_compression_3dc
;
3944 GLboolean ATI_texture_mirror_once
;
3945 GLboolean ATI_texture_env_combine3
;
3946 GLboolean ATI_fragment_shader
;
3947 GLboolean ATI_separate_stencil
;
3948 GLboolean GREMEDY_string_marker
;
3949 GLboolean INTEL_performance_query
;
3950 GLboolean KHR_blend_equation_advanced
;
3951 GLboolean KHR_robustness
;
3952 GLboolean KHR_texture_compression_astc_hdr
;
3953 GLboolean KHR_texture_compression_astc_ldr
;
3954 GLboolean KHR_texture_compression_astc_sliced_3d
;
3955 GLboolean MESA_pack_invert
;
3956 GLboolean MESA_shader_framebuffer_fetch
;
3957 GLboolean MESA_shader_framebuffer_fetch_non_coherent
;
3958 GLboolean MESA_shader_integer_functions
;
3959 GLboolean MESA_ycbcr_texture
;
3960 GLboolean NV_conditional_render
;
3961 GLboolean NV_fog_distance
;
3962 GLboolean NV_point_sprite
;
3963 GLboolean NV_primitive_restart
;
3964 GLboolean NV_texture_barrier
;
3965 GLboolean NV_texture_env_combine4
;
3966 GLboolean NV_texture_rectangle
;
3967 GLboolean NV_vdpau_interop
;
3968 GLboolean NVX_gpu_memory_info
;
3969 GLboolean TDFX_texture_compression_FXT1
;
3970 GLboolean OES_EGL_image
;
3971 GLboolean OES_draw_texture
;
3972 GLboolean OES_depth_texture_cube_map
;
3973 GLboolean OES_EGL_image_external
;
3974 GLboolean OES_texture_float
;
3975 GLboolean OES_texture_float_linear
;
3976 GLboolean OES_texture_half_float
;
3977 GLboolean OES_texture_half_float_linear
;
3978 GLboolean OES_compressed_ETC1_RGB8_texture
;
3979 GLboolean OES_geometry_shader
;
3980 GLboolean OES_texture_compression_astc
;
3981 GLboolean extension_sentinel
;
3982 /** The extension string */
3983 const GLubyte
*String
;
3984 /** Number of supported extensions */
3987 * The context version which extension helper functions compare against.
3988 * By default, the value is equal to ctx->Version. This changes to ~0
3989 * while meta is in progress.
3996 * A stack of matrices (projection, modelview, color, texture, etc).
3998 struct gl_matrix_stack
4000 GLmatrix
*Top
; /**< points into Stack */
4001 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
4002 unsigned StackSize
; /**< Number of elements in Stack */
4003 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
4004 GLuint MaxDepth
; /**< size of Stack[] array */
4005 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
4010 * \name Bits for image transfer operations
4011 * \sa __struct gl_contextRec::ImageTransferState.
4014 #define IMAGE_SCALE_BIAS_BIT 0x1
4015 #define IMAGE_SHIFT_OFFSET_BIT 0x2
4016 #define IMAGE_MAP_COLOR_BIT 0x4
4017 #define IMAGE_CLAMP_BIT 0x800
4020 /** Pixel Transfer ops */
4021 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4022 IMAGE_SHIFT_OFFSET_BIT | \
4023 IMAGE_MAP_COLOR_BIT)
4026 * \name Bits to indicate what state has changed.
4029 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4030 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4031 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4032 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4033 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4034 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4035 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4036 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4037 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4038 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4039 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4040 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4041 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4042 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4043 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4044 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4045 #define _NEW_TEXTURE (1u << 16) /**< gl_context::Texture */
4046 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4047 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4048 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4049 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4050 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4051 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4052 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4053 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4054 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4055 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4056 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4057 #define _NEW_BUFFER_OBJECT (1u << 28)
4058 #define _NEW_FRAG_CLAMP (1u << 29)
4059 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4060 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4066 * Composite state flags
4069 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4075 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4085 /* This has to be included here. */
4090 * Display list flags.
4091 * Strictly this is a tnl-private concept, but it doesn't seem
4092 * worthwhile adding a tnl private structure just to hold this one bit
4095 #define DLIST_DANGLING_REFS 0x1
4098 /** Opaque declaration of display list payload data type */
4099 union gl_dlist_node
;
4103 * Provide a location where information about a display list can be
4104 * collected. Could be extended with driverPrivate structures,
4105 * etc. in the future.
4107 struct gl_display_list
4110 GLchar
*Label
; /**< GL_KHR_debug */
4111 GLbitfield Flags
; /**< DLIST_x flags */
4112 /** The dlist commands are in a linked list of nodes */
4113 union gl_dlist_node
*Head
;
4118 * State used during display list compilation and execution.
4120 struct gl_dlist_state
4122 GLuint CallDepth
; /**< Current recursion calling depth */
4124 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4125 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4126 GLuint CurrentPos
; /**< Index into current block of nodes */
4128 GLvertexformat ListVtxfmt
;
4130 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4131 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4133 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4134 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4137 /* State known to have been set by the currently-compiling display
4138 * list. Used to eliminate some redundant state changes.
4146 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4147 * to small enums suitable for use as an array index.
4150 enum mesa_debug_source
{
4151 MESA_DEBUG_SOURCE_API
,
4152 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4153 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4154 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4155 MESA_DEBUG_SOURCE_APPLICATION
,
4156 MESA_DEBUG_SOURCE_OTHER
,
4157 MESA_DEBUG_SOURCE_COUNT
4160 enum mesa_debug_type
{
4161 MESA_DEBUG_TYPE_ERROR
,
4162 MESA_DEBUG_TYPE_DEPRECATED
,
4163 MESA_DEBUG_TYPE_UNDEFINED
,
4164 MESA_DEBUG_TYPE_PORTABILITY
,
4165 MESA_DEBUG_TYPE_PERFORMANCE
,
4166 MESA_DEBUG_TYPE_OTHER
,
4167 MESA_DEBUG_TYPE_MARKER
,
4168 MESA_DEBUG_TYPE_PUSH_GROUP
,
4169 MESA_DEBUG_TYPE_POP_GROUP
,
4170 MESA_DEBUG_TYPE_COUNT
4173 enum mesa_debug_severity
{
4174 MESA_DEBUG_SEVERITY_LOW
,
4175 MESA_DEBUG_SEVERITY_MEDIUM
,
4176 MESA_DEBUG_SEVERITY_HIGH
,
4177 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4178 MESA_DEBUG_SEVERITY_COUNT
4184 * Driver-specific state flags.
4186 * These are or'd with gl_context::NewDriverState to notify a driver about
4187 * a state change. The driver sets the flags at context creation and
4188 * the meaning of the bits set is opaque to core Mesa.
4190 struct gl_driver_flags
4192 /** gl_context::Array::_DrawArrays (vertex array state) */
4195 /** gl_context::TransformFeedback::CurrentObject */
4196 uint64_t NewTransformFeedback
;
4198 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4199 uint64_t NewTransformFeedbackProg
;
4201 /** gl_context::RasterDiscard */
4202 uint64_t NewRasterizerDiscard
;
4205 * gl_context::UniformBufferBindings
4206 * gl_shader_program::UniformBlocks
4208 uint64_t NewUniformBuffer
;
4211 * gl_context::ShaderStorageBufferBindings
4212 * gl_shader_program::ShaderStorageBlocks
4214 uint64_t NewShaderStorageBuffer
;
4216 uint64_t NewTextureBuffer
;
4219 * gl_context::AtomicBufferBindings
4221 uint64_t NewAtomicBuffer
;
4224 * gl_context::ImageUnits
4226 uint64_t NewImageUnits
;
4229 * gl_context::TessCtrlProgram::patch_default_*
4231 uint64_t NewDefaultTessLevels
;
4234 struct gl_uniform_buffer_binding
4236 struct gl_buffer_object
*BufferObject
;
4237 /** Start of uniform block data in the buffer */
4239 /** Size of data allowed to be referenced from the buffer (in bytes) */
4242 * glBindBufferBase() indicates that the Size should be ignored and only
4243 * limited by the current size of the BufferObject.
4245 GLboolean AutomaticSize
;
4248 struct gl_shader_storage_buffer_binding
4250 struct gl_buffer_object
*BufferObject
;
4251 /** Start of shader storage block data in the buffer */
4253 /** Size of data allowed to be referenced from the buffer (in bytes) */
4256 * glBindBufferBase() indicates that the Size should be ignored and only
4257 * limited by the current size of the BufferObject.
4259 GLboolean AutomaticSize
;
4263 * ARB_shader_image_load_store image unit.
4265 struct gl_image_unit
4268 * Texture object bound to this unit.
4270 struct gl_texture_object
*TexObj
;
4273 * Level of the texture object bound to this unit.
4278 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4279 * GL_FALSE if only some specific layer of the texture is bound.
4285 * Layer of the texture object bound to this unit as specified by the
4291 * Layer of the texture object bound to this unit, or zero if the
4292 * whole level is bound.
4297 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4298 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4303 * GL internal format that determines the interpretation of the
4304 * image memory when shader image operations are performed through
4310 * Mesa format corresponding to \c Format.
4312 mesa_format _ActualFormat
;
4317 * Binding point for an atomic counter buffer object.
4319 struct gl_atomic_buffer_binding
4321 struct gl_buffer_object
*BufferObject
;
4327 * Shader subroutines storage
4329 struct gl_subroutine_index_binding
4336 * Mesa rendering context.
4338 * This is the central context data structure for Mesa. Almost all
4339 * OpenGL state is contained in this structure.
4340 * Think of this as a base class from which device drivers will derive
4345 /** State possibly shared with other contexts in the address space */
4346 struct gl_shared_state
*Shared
;
4348 /** \name API function pointer tables */
4352 * The current dispatch table for non-displaylist-saving execution, either
4353 * BeginEnd or OutsideBeginEnd
4355 struct _glapi_table
*Exec
;
4357 * The normal dispatch table for non-displaylist-saving, non-begin/end
4359 struct _glapi_table
*OutsideBeginEnd
;
4360 /** The dispatch table used between glNewList() and glEndList() */
4361 struct _glapi_table
*Save
;
4363 * The dispatch table used between glBegin() and glEnd() (outside of a
4364 * display list). Only valid functions between those two are set, which is
4365 * mostly just the set in a GLvertexformat struct.
4367 struct _glapi_table
*BeginEnd
;
4369 * Dispatch table for when a graphics reset has happened.
4371 struct _glapi_table
*ContextLost
;
4373 * Tracks the current dispatch table out of the 4 above, so that it can be
4374 * re-set on glXMakeCurrent().
4376 struct _glapi_table
*CurrentDispatch
;
4379 struct gl_config Visual
;
4380 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4381 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4382 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4383 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4386 * Device driver function pointer table
4388 struct dd_function_table Driver
;
4390 /** Core/Driver constants */
4391 struct gl_constants Const
;
4393 /** \name The various 4x4 matrix stacks */
4395 struct gl_matrix_stack ModelviewMatrixStack
;
4396 struct gl_matrix_stack ProjectionMatrixStack
;
4397 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4398 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4399 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4402 /** Combined modelview and projection matrix */
4403 GLmatrix _ModelProjectMatrix
;
4405 /** \name Display lists */
4406 struct gl_dlist_state ListState
;
4408 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4409 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4411 /** Extension information */
4412 struct gl_extensions Extensions
;
4414 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4416 char *VersionString
;
4418 /** \name State attribute stack (for glPush/PopAttrib) */
4420 GLuint AttribStackDepth
;
4421 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4424 /** \name Renderer attribute groups
4426 * We define a struct for each attribute group to make pushing and popping
4427 * attributes easy. Also it's a good organization.
4430 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4431 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4432 struct gl_current_attrib Current
; /**< Current attributes */
4433 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4434 struct gl_eval_attrib Eval
; /**< Eval attributes */
4435 struct gl_fog_attrib Fog
; /**< Fog attributes */
4436 struct gl_hint_attrib Hint
; /**< Hint attributes */
4437 struct gl_light_attrib Light
; /**< Light attributes */
4438 struct gl_line_attrib Line
; /**< Line attributes */
4439 struct gl_list_attrib List
; /**< List attributes */
4440 struct gl_multisample_attrib Multisample
;
4441 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4442 struct gl_point_attrib Point
; /**< Point attributes */
4443 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4444 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4445 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4446 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4447 struct gl_texture_attrib Texture
; /**< Texture attributes */
4448 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4449 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4452 /** \name Client attribute stack */
4454 GLuint ClientAttribStackDepth
;
4455 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4458 /** \name Client attribute groups */
4460 struct gl_array_attrib Array
; /**< Vertex arrays */
4461 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4462 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4463 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4466 /** \name Other assorted state (not pushed/popped on attribute stack) */
4468 struct gl_pixelmaps PixelMaps
;
4470 struct gl_evaluators EvalMap
; /**< All evaluators */
4471 struct gl_feedback Feedback
; /**< Feedback */
4472 struct gl_selection Select
; /**< Selection */
4474 struct gl_program_state Program
; /**< general program state */
4475 struct gl_vertex_program_state VertexProgram
;
4476 struct gl_fragment_program_state FragmentProgram
;
4477 struct gl_geometry_program_state GeometryProgram
;
4478 struct gl_compute_program_state ComputeProgram
;
4479 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4480 struct gl_tess_eval_program_state TessEvalProgram
;
4481 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4483 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4484 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4487 * Current active shader pipeline state
4489 * Almost all internal users want ::_Shader instead of ::Shader. The
4490 * exceptions are bits of legacy GLSL API that do not know about separate
4493 * If a program is active via \c glUseProgram, this will point to
4496 * If a program pipeline is active via \c glBindProgramPipeline, this will
4497 * point to \c ::Pipeline.Current.
4499 * If neither a program nor a program pipeline is active, this will point to
4500 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4503 struct gl_pipeline_object
*_Shader
;
4505 struct gl_query_state Query
; /**< occlusion, timer queries */
4507 struct gl_transform_feedback_state TransformFeedback
;
4509 struct gl_perf_monitor_state PerfMonitor
;
4511 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4512 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4513 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4515 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4516 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4518 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4521 * Current GL_ARB_uniform_buffer_object binding referenced by
4522 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4524 struct gl_buffer_object
*UniformBuffer
;
4527 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4528 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4530 struct gl_buffer_object
*ShaderStorageBuffer
;
4533 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4534 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4535 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4538 struct gl_uniform_buffer_binding
4539 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4542 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4543 * and GL 4.3. This is set up using glBindBufferRange() or
4544 * glBindBufferBase(). They are associated with shader storage blocks by
4545 * glShaderStorageBlockBinding()'s state in the shader program.
4547 struct gl_shader_storage_buffer_binding
4548 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4551 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4554 struct gl_buffer_object
*AtomicBuffer
;
4557 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4560 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4563 * Array of atomic counter buffer binding points.
4565 struct gl_atomic_buffer_binding
4566 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4569 * Array of image units for ARB_shader_image_load_store.
4571 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4573 struct gl_subroutine_index_binding SubroutineIndex
[MESA_SHADER_STAGES
];
4576 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4578 /* GL_EXT_framebuffer_object */
4579 struct gl_renderbuffer
*CurrentRenderbuffer
;
4581 GLenum ErrorValue
; /**< Last error code */
4584 * Recognize and silence repeated error debug messages in buggy apps.
4586 const char *ErrorDebugFmtString
;
4587 GLuint ErrorDebugCount
;
4589 /* GL_ARB_debug_output/GL_KHR_debug */
4591 struct gl_debug_state
*Debug
;
4593 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4594 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4595 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4597 struct gl_driver_flags DriverFlags
;
4599 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4601 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4603 /** \name Derived state */
4604 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4605 GLfloat _EyeZDir
[3];
4606 GLfloat _ModelViewInvScale
;
4607 GLboolean _NeedEyeCoords
;
4608 GLboolean _ForceEyeCoords
;
4610 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4612 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4614 /** \name For debugging/development only */
4616 GLboolean FirstTimeCurrent
;
4620 * False if this context was created without a config. This is needed
4621 * because the initial state of glDrawBuffers depends on this
4623 GLboolean HasConfig
;
4625 /** software compression/decompression supported or not */
4626 GLboolean Mesa_DXTn
;
4628 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4630 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4633 * \name Hooks for module contexts.
4635 * These will eventually live in the driver or elsewhere.
4638 void *swrast_context
;
4639 void *swsetup_context
;
4640 void *swtnl_context
;
4641 struct vbo_context
*vbo_context
;
4642 struct st_context
*st
;
4647 * \name NV_vdpau_interop
4650 const void *vdpDevice
;
4651 const void *vdpGetProcAddress
;
4652 struct set
*vdpSurfaces
;
4656 * Has this context observed a GPU reset in any context in the share group?
4658 * Once this field becomes true, it is never reset to false.
4660 GLboolean ShareGroupReset
;
4664 * Information about memory usage. All sizes are in kilobytes.
4666 struct gl_memory_info
4668 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4669 unsigned avail_device_memory
; /**< free device memory at the moment */
4670 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4671 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4672 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4673 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4677 extern int MESA_VERBOSE
;
4678 extern int MESA_DEBUG_FLAGS
;
4679 # define MESA_FUNCTION __func__
4681 # define MESA_VERBOSE 0
4682 # define MESA_DEBUG_FLAGS 0
4683 # define MESA_FUNCTION "a function"
4687 /** The MESA_VERBOSE var is a bitmask of these flags */
4690 VERBOSE_VARRAY
= 0x0001,
4691 VERBOSE_TEXTURE
= 0x0002,
4692 VERBOSE_MATERIAL
= 0x0004,
4693 VERBOSE_PIPELINE
= 0x0008,
4694 VERBOSE_DRIVER
= 0x0010,
4695 VERBOSE_STATE
= 0x0020,
4696 VERBOSE_API
= 0x0040,
4697 VERBOSE_DISPLAY_LIST
= 0x0100,
4698 VERBOSE_LIGHTING
= 0x0200,
4699 VERBOSE_PRIMS
= 0x0400,
4700 VERBOSE_VERTS
= 0x0800,
4701 VERBOSE_DISASSEM
= 0x1000,
4702 VERBOSE_DRAW
= 0x2000,
4703 VERBOSE_SWAPBUFFERS
= 0x4000
4707 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4710 DEBUG_SILENT
= (1 << 0),
4711 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4712 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4713 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4720 #endif /* MTYPES_H */