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 "compiler/shader_info.h"
47 #include "main/formats.h" /* MESA_FORMAT_COUNT */
48 #include "compiler/glsl/list.h"
49 #include "util/bitscan.h"
58 * \name 64-bit extension of GLbitfield.
61 typedef GLuint64 GLbitfield64
;
63 /** Set a single bit */
64 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
65 /** Set all bits up to excluding bit b */
66 #define BITFIELD64_MASK(b) \
67 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
68 /** Set count bits starting from bit b */
69 #define BITFIELD64_RANGE(b, count) \
70 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
74 * \name Some forward type declarations
77 struct _mesa_HashTable
;
78 struct gl_attrib_node
;
79 struct gl_list_extensions
;
81 struct gl_program_cache
;
82 struct gl_texture_object
;
83 struct gl_debug_state
;
86 struct gl_uniform_storage
;
87 struct prog_instruction
;
88 struct gl_program_parameter_list
;
95 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
96 #define PRIM_MAX GL_PATCHES
97 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
98 #define PRIM_UNKNOWN (PRIM_MAX + 2)
101 * Determine if the given gl_varying_slot appears in the fragment shader.
103 static inline GLboolean
104 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
107 case VARYING_SLOT_PSIZ
:
108 case VARYING_SLOT_BFC0
:
109 case VARYING_SLOT_BFC1
:
110 case VARYING_SLOT_EDGE
:
111 case VARYING_SLOT_CLIP_VERTEX
:
112 case VARYING_SLOT_LAYER
:
113 case VARYING_SLOT_TESS_LEVEL_OUTER
:
114 case VARYING_SLOT_TESS_LEVEL_INNER
:
115 case VARYING_SLOT_BOUNDING_BOX0
:
116 case VARYING_SLOT_BOUNDING_BOX1
:
124 * Indexes for all renderbuffers
128 /* the four standard color buffers */
136 /* optional aux buffer */
138 /* generic renderbuffers */
151 * Bit flags for all renderbuffers
153 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
154 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
155 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
156 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
157 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
158 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
159 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
160 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
161 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
162 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
163 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
164 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
165 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
166 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
167 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
168 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
169 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
170 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
171 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
174 * Mask of all the color buffer bits (but not accum).
176 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
177 BUFFER_BIT_BACK_LEFT | \
178 BUFFER_BIT_FRONT_RIGHT | \
179 BUFFER_BIT_BACK_RIGHT | \
181 BUFFER_BIT_COLOR0 | \
182 BUFFER_BIT_COLOR1 | \
183 BUFFER_BIT_COLOR2 | \
184 BUFFER_BIT_COLOR3 | \
185 BUFFER_BIT_COLOR4 | \
186 BUFFER_BIT_COLOR5 | \
187 BUFFER_BIT_COLOR6 | \
191 * Framebuffer configuration (aka visual / pixelformat)
192 * Note: some of these fields should be boolean, but it appears that
193 * code in drivers/dri/common/util.c requires int-sized fields.
199 GLuint doubleBufferMode
;
202 GLboolean haveAccumBuffer
;
203 GLboolean haveDepthBuffer
;
204 GLboolean haveStencilBuffer
;
206 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
207 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
208 GLint rgbBits
; /* total bits for rgb */
209 GLint indexBits
; /* total bits for colorindex */
211 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
219 /* EXT_visual_rating / GLX 1.2 */
222 /* EXT_visual_info / GLX 1.2 */
223 GLint transparentPixel
;
224 /* colors are floats scaled to ints */
225 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
226 GLint transparentIndex
;
228 /* ARB_multisample / SGIS_multisample */
232 /* SGIX_pbuffer / GLX 1.3 */
233 GLint maxPbufferWidth
;
234 GLint maxPbufferHeight
;
235 GLint maxPbufferPixels
;
236 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
237 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
239 /* OML_swap_method */
242 /* EXT_texture_from_pixmap */
243 GLint bindToTextureRgb
;
244 GLint bindToTextureRgba
;
245 GLint bindToMipmapTexture
;
246 GLint bindToTextureTargets
;
249 /* EXT_framebuffer_sRGB */
255 * \name Bit flags used for updating material values.
258 #define MAT_ATTRIB_FRONT_AMBIENT 0
259 #define MAT_ATTRIB_BACK_AMBIENT 1
260 #define MAT_ATTRIB_FRONT_DIFFUSE 2
261 #define MAT_ATTRIB_BACK_DIFFUSE 3
262 #define MAT_ATTRIB_FRONT_SPECULAR 4
263 #define MAT_ATTRIB_BACK_SPECULAR 5
264 #define MAT_ATTRIB_FRONT_EMISSION 6
265 #define MAT_ATTRIB_BACK_EMISSION 7
266 #define MAT_ATTRIB_FRONT_SHININESS 8
267 #define MAT_ATTRIB_BACK_SHININESS 9
268 #define MAT_ATTRIB_FRONT_INDEXES 10
269 #define MAT_ATTRIB_BACK_INDEXES 11
270 #define MAT_ATTRIB_MAX 12
272 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
273 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
274 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
275 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
276 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
277 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
279 #define MAT_INDEX_AMBIENT 0
280 #define MAT_INDEX_DIFFUSE 1
281 #define MAT_INDEX_SPECULAR 2
283 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
284 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
285 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
286 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
287 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
288 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
289 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
290 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
291 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
292 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
293 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
294 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
297 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
298 MAT_BIT_FRONT_AMBIENT | \
299 MAT_BIT_FRONT_DIFFUSE | \
300 MAT_BIT_FRONT_SPECULAR | \
301 MAT_BIT_FRONT_SHININESS | \
302 MAT_BIT_FRONT_INDEXES)
304 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
305 MAT_BIT_BACK_AMBIENT | \
306 MAT_BIT_BACK_DIFFUSE | \
307 MAT_BIT_BACK_SPECULAR | \
308 MAT_BIT_BACK_SHININESS | \
309 MAT_BIT_BACK_INDEXES)
311 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
320 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
328 #define LIGHT_SPOT 0x1
329 #define LIGHT_LOCAL_VIEWER 0x2
330 #define LIGHT_POSITIONAL 0x4
331 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
336 * Light source state.
340 GLfloat Ambient
[4]; /**< ambient color */
341 GLfloat Diffuse
[4]; /**< diffuse color */
342 GLfloat Specular
[4]; /**< specular color */
343 GLfloat EyePosition
[4]; /**< position in eye coordinates */
344 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
345 GLfloat SpotExponent
;
346 GLfloat SpotCutoff
; /**< in degrees */
347 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
348 GLfloat ConstantAttenuation
;
349 GLfloat LinearAttenuation
;
350 GLfloat QuadraticAttenuation
;
351 GLboolean Enabled
; /**< On/off flag */
354 * \name Derived fields
357 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
359 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
360 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
361 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
362 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
363 GLfloat _VP_inf_spot_attenuation
;
365 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
366 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
367 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
377 GLfloat Ambient
[4]; /**< ambient color */
378 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
379 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
380 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
381 * or GL_SEPARATE_SPECULAR_COLOR */
386 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
388 struct gl_accum_attrib
390 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
395 * Used for storing clear color, texture border color, etc.
396 * The float values are typically unclamped.
407 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
409 struct gl_colorbuffer_attrib
411 GLuint ClearIndex
; /**< Index for glClear */
412 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
413 GLuint IndexMask
; /**< Color index write mask */
414 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
416 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
419 * \name alpha testing
422 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
423 GLenum AlphaFunc
; /**< Alpha test function */
424 GLfloat AlphaRefUnclamped
;
425 GLclampf AlphaRef
; /**< Alpha reference value */
432 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
434 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
435 * control, only on the fixed-pointness of the render target.
436 * The query does however depend on fragment color clamping.
438 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
439 GLfloat BlendColor
[4]; /**< Blending color */
443 GLenum SrcRGB
; /**< RGB blend source term */
444 GLenum DstRGB
; /**< RGB blend dest term */
445 GLenum SrcA
; /**< Alpha blend source term */
446 GLenum DstA
; /**< Alpha blend dest term */
447 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
448 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
450 * Set if any blend factor uses SRC1. Computed at the time blend factors
453 GLboolean _UsesDualSrc
;
454 } Blend
[MAX_DRAW_BUFFERS
];
455 /** Are the blend func terms currently different for each buffer/target? */
456 GLboolean _BlendFuncPerBuffer
;
457 /** Are the blend equations currently different for each buffer/target? */
458 GLboolean _BlendEquationPerBuffer
;
461 * Which advanced blending mode is in use (or BLEND_NONE).
463 * KHR_blend_equation_advanced only allows advanced blending with a single
464 * draw buffer, and NVX_blend_equation_advanced_multi_draw_buffer still
465 * requires all draw buffers to match, so we only need a single value.
467 enum gl_advanced_blend_mode _AdvancedBlendMode
;
469 /** Coherency requested via glEnable(GL_BLEND_ADVANCED_COHERENT_KHR)? */
477 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
478 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
479 GLenum LogicOp
; /**< Logic operator */
483 GLboolean DitherFlag
; /**< Dither enable flag */
485 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
486 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
487 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
489 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
494 * Current attribute group (GL_CURRENT_BIT).
496 struct gl_current_attrib
499 * \name Current vertex attributes (color, texcoords, etc).
500 * \note Values are valid only after FLUSH_VERTICES has been called.
501 * \note Index and Edgeflag current values are stored as floats in the
502 * SIX and SEVEN attribute slots.
503 * \note We need double storage for 64-bit vertex attributes
505 GLfloat Attrib
[VERT_ATTRIB_MAX
][4*2];
508 * \name Current raster position attributes (always up to date after a
511 GLfloat RasterPos
[4];
512 GLfloat RasterDistance
;
513 GLfloat RasterColor
[4];
514 GLfloat RasterSecondaryColor
[4];
515 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
516 GLboolean RasterPosValid
;
521 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
523 struct gl_depthbuffer_attrib
525 GLenum Func
; /**< Function for depth buffer compare */
526 GLclampd Clear
; /**< Value to clear depth buffer to */
527 GLboolean Test
; /**< Depth buffering enabled flag */
528 GLboolean Mask
; /**< Depth buffer writable? */
529 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
530 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
535 * Evaluator attribute group (GL_EVAL_BIT).
537 struct gl_eval_attrib
543 GLboolean Map1Color4
;
545 GLboolean Map1Normal
;
546 GLboolean Map1TextureCoord1
;
547 GLboolean Map1TextureCoord2
;
548 GLboolean Map1TextureCoord3
;
549 GLboolean Map1TextureCoord4
;
550 GLboolean Map1Vertex3
;
551 GLboolean Map1Vertex4
;
552 GLboolean Map2Color4
;
554 GLboolean Map2Normal
;
555 GLboolean Map2TextureCoord1
;
556 GLboolean Map2TextureCoord2
;
557 GLboolean Map2TextureCoord3
;
558 GLboolean Map2TextureCoord4
;
559 GLboolean Map2Vertex3
;
560 GLboolean Map2Vertex4
;
561 GLboolean AutoNormal
;
565 * \name Map Grid endpoints and divisions and calculated du values
569 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
570 GLint MapGrid2un
, MapGrid2vn
;
571 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
572 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
578 * Compressed fog mode.
590 * Fog attribute group (GL_FOG_BIT).
594 GLboolean Enabled
; /**< Fog enabled flag */
595 GLboolean ColorSumEnabled
;
596 uint8_t _PackedMode
; /**< Fog mode as 2 bits */
597 uint8_t _PackedEnabledMode
; /**< Masked CompressedMode */
598 GLfloat ColorUnclamped
[4]; /**< Fog color */
599 GLfloat Color
[4]; /**< Fog color */
600 GLfloat Density
; /**< Density >= 0.0 */
601 GLfloat Start
; /**< Start distance in eye coords */
602 GLfloat End
; /**< End distance in eye coords */
603 GLfloat Index
; /**< Fog index */
604 GLenum Mode
; /**< Fog mode */
605 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
606 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
607 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
612 * Hint attribute group (GL_HINT_BIT).
614 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
616 struct gl_hint_attrib
618 GLenum PerspectiveCorrection
;
621 GLenum PolygonSmooth
;
623 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
624 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
625 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
630 * Lighting attribute group (GL_LIGHT_BIT).
632 struct gl_light_attrib
634 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
635 struct gl_lightmodel Model
; /**< Lighting model */
638 * Front and back material values.
639 * Note: must call FLUSH_VERTICES() before using.
641 struct gl_material Material
;
643 GLboolean Enabled
; /**< Lighting enabled flag */
644 GLboolean ColorMaterialEnabled
;
646 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
647 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
648 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
649 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
650 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
653 GLboolean _ClampVertexColor
;
654 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
657 * Derived state for optimizations:
660 GLbitfield _EnabledLights
; /**< bitmask containing enabled lights */
662 GLboolean _NeedEyeCoords
;
663 GLboolean _NeedVertices
; /**< Use fast shader? */
665 GLfloat _BaseColor
[2][3];
671 * Line attribute group (GL_LINE_BIT).
673 struct gl_line_attrib
675 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
676 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
677 GLushort StipplePattern
; /**< Stipple pattern */
678 GLint StippleFactor
; /**< Stipple repeat factor */
679 GLfloat Width
; /**< Line width */
684 * Display list attribute group (GL_LIST_BIT).
686 struct gl_list_attrib
693 * Multisample attribute group (GL_MULTISAMPLE_BIT).
695 struct gl_multisample_attrib
698 GLboolean SampleAlphaToCoverage
;
699 GLboolean SampleAlphaToOne
;
700 GLboolean SampleCoverage
;
701 GLboolean SampleCoverageInvert
;
702 GLboolean SampleShading
;
704 /* ARB_texture_multisample / GL3.2 additions */
705 GLboolean SampleMask
;
707 GLfloat SampleCoverageValue
;
708 GLfloat MinSampleShadingValue
;
710 /** The GL spec defines this as an array but >32x MSAA is madness */
711 GLbitfield SampleMaskValue
;
716 * A pixelmap (see glPixelMap)
721 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
726 * Collection of all pixelmaps
730 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
731 struct gl_pixelmap GtoG
;
732 struct gl_pixelmap BtoB
;
733 struct gl_pixelmap AtoA
;
734 struct gl_pixelmap ItoR
;
735 struct gl_pixelmap ItoG
;
736 struct gl_pixelmap ItoB
;
737 struct gl_pixelmap ItoA
;
738 struct gl_pixelmap ItoI
;
739 struct gl_pixelmap StoS
;
744 * Pixel attribute group (GL_PIXEL_MODE_BIT).
746 struct gl_pixel_attrib
748 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
750 /*--- Begin Pixel Transfer State ---*/
751 /* Fields are in the order in which they're applied... */
753 /** Scale & Bias (index shift, offset) */
755 GLfloat RedBias
, RedScale
;
756 GLfloat GreenBias
, GreenScale
;
757 GLfloat BlueBias
, BlueScale
;
758 GLfloat AlphaBias
, AlphaScale
;
759 GLfloat DepthBias
, DepthScale
;
760 GLint IndexShift
, IndexOffset
;
764 /* Note: actual pixel maps are not part of this attrib group */
765 GLboolean MapColorFlag
;
766 GLboolean MapStencilFlag
;
768 /*--- End Pixel Transfer State ---*/
771 GLfloat ZoomX
, ZoomY
;
776 * Point attribute group (GL_POINT_BIT).
778 struct gl_point_attrib
780 GLfloat Size
; /**< User-specified point size */
781 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
782 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
783 GLfloat Threshold
; /**< GL_EXT_point_parameters */
784 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
785 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
786 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
787 GLbitfield CoordReplace
; /**< GL_ARB_point_sprite*/
788 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
789 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
794 * Polygon attribute group (GL_POLYGON_BIT).
796 struct gl_polygon_attrib
798 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
799 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
800 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
801 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
802 GLboolean CullFlag
; /**< Culling on/off flag */
803 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
804 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
805 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
806 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
807 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
808 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
809 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
810 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
811 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
816 * Scissor attributes (GL_SCISSOR_BIT).
818 struct gl_scissor_rect
820 GLint X
, Y
; /**< Lower left corner of box */
821 GLsizei Width
, Height
; /**< Size of box */
823 struct gl_scissor_attrib
825 GLbitfield EnableFlags
; /**< Scissor test enabled? */
826 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
827 GLint NumWindowRects
; /**< Count of enabled window rectangles */
828 GLenum WindowRectMode
; /**< Whether to include or exclude the rects */
829 struct gl_scissor_rect WindowRects
[MAX_WINDOW_RECTANGLES
];
834 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
836 * Three sets of stencil data are tracked so that OpenGL 2.0,
837 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
838 * simultaneously. In each of the stencil state arrays, element 0 corresponds
839 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
840 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
841 * GL_EXT_stencil_two_side GL_BACK state.
843 * The derived value \c _BackFace is either 1 or 2 depending on whether or
844 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
846 * The derived value \c _TestTwoSide is set when the front-face and back-face
847 * stencil state are different.
849 struct gl_stencil_attrib
851 GLboolean Enabled
; /**< Enabled flag */
852 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
853 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
854 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
855 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
856 GLboolean _TestTwoSide
;
857 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
858 GLenum Function
[3]; /**< Stencil function */
859 GLenum FailFunc
[3]; /**< Fail function */
860 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
861 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
862 GLint Ref
[3]; /**< Reference value */
863 GLuint ValueMask
[3]; /**< Value mask */
864 GLuint WriteMask
[3]; /**< Write mask */
865 GLuint Clear
; /**< Clear value */
870 * An index for each type of texture object. These correspond to the GL
871 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
872 * Note: the order is from highest priority to lowest priority.
876 TEXTURE_2D_MULTISAMPLE_INDEX
,
877 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
878 TEXTURE_CUBE_ARRAY_INDEX
,
879 TEXTURE_BUFFER_INDEX
,
880 TEXTURE_2D_ARRAY_INDEX
,
881 TEXTURE_1D_ARRAY_INDEX
,
882 TEXTURE_EXTERNAL_INDEX
,
893 * Bit flags for each type of texture object
896 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
897 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
898 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
899 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
900 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
901 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
902 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
903 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
904 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
905 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
906 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
907 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
912 * Texture image state. Drivers will typically create a subclass of this
913 * with extra fields for memory buffers, etc.
915 struct gl_texture_image
917 GLint InternalFormat
; /**< Internal format as given by the user */
918 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
919 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
920 * GL_INTENSITY, GL_DEPTH_COMPONENT or
921 * GL_DEPTH_STENCIL_EXT only. Used for
922 * choosing TexEnv arithmetic.
924 mesa_format TexFormat
; /**< The actual texture memory format */
926 GLuint Border
; /**< 0 or 1 */
927 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
928 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
929 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
930 GLuint Width2
; /**< = Width - 2*Border */
931 GLuint Height2
; /**< = Height - 2*Border */
932 GLuint Depth2
; /**< = Depth - 2*Border */
933 GLuint WidthLog2
; /**< = log2(Width2) */
934 GLuint HeightLog2
; /**< = log2(Height2) */
935 GLuint DepthLog2
; /**< = log2(Depth2) */
936 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
937 levels, computed from the dimensions */
939 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
940 GLuint Level
; /**< Which mipmap level am I? */
941 /** Cube map face: index into gl_texture_object::Image[] array */
944 /** GL_ARB_texture_multisample */
945 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
946 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
951 * Indexes for cube map faces.
966 * Sampler object state. These objects are new with GL_ARB_sampler_objects
967 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
969 struct gl_sampler_object
974 GLchar
*Label
; /**< GL_KHR_debug */
976 GLenum WrapS
; /**< S-axis texture image wrap mode */
977 GLenum WrapT
; /**< T-axis texture image wrap mode */
978 GLenum WrapR
; /**< R-axis texture image wrap mode */
979 GLenum MinFilter
; /**< minification filter */
980 GLenum MagFilter
; /**< magnification filter */
981 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
982 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
983 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
984 GLfloat LodBias
; /**< OpenGL 1.4 */
985 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
986 GLenum CompareMode
; /**< GL_ARB_shadow */
987 GLenum CompareFunc
; /**< GL_ARB_shadow */
988 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
989 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
994 * Texture object state. Contains the array of mipmap images, border color,
995 * wrap modes, filter modes, and shadow/texcompare state.
997 struct gl_texture_object
999 mtx_t Mutex
; /**< for thread safety */
1000 GLint RefCount
; /**< reference count */
1001 GLuint Name
; /**< the user-visible texture object ID */
1002 GLchar
*Label
; /**< GL_KHR_debug */
1003 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1004 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
1005 Only valid when Target is valid. */
1007 struct gl_sampler_object Sampler
;
1009 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1010 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
1012 GLfloat Priority
; /**< in [0,1] */
1013 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1014 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1015 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1016 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1017 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1018 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1019 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1020 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1021 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1022 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1023 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1024 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1025 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1026 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1028 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1029 GLboolean _IsFloat
; /**< GL_OES_float_texture */
1030 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
1032 GLuint MinLevel
; /**< GL_ARB_texture_view */
1033 GLuint MinLayer
; /**< GL_ARB_texture_view */
1034 GLuint NumLevels
; /**< GL_ARB_texture_view */
1035 GLuint NumLayers
; /**< GL_ARB_texture_view */
1037 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1038 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1040 /** GL_ARB_texture_buffer_object */
1041 struct gl_buffer_object
*BufferObject
;
1042 GLenum BufferObjectFormat
;
1043 /** Equivalent Mesa format for BufferObjectFormat. */
1044 mesa_format _BufferObjectFormat
;
1045 /** GL_ARB_texture_buffer_range */
1046 GLintptr BufferOffset
;
1047 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1049 /** GL_OES_EGL_image_external */
1050 GLint RequiredTextureImageUnits
;
1052 /** GL_ARB_shader_image_load_store */
1053 GLenum ImageFormatCompatibilityType
;
1057 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1058 #define MAX_COMBINER_TERMS 4
1062 * Texture combine environment state.
1064 struct gl_tex_env_combine_state
1066 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1067 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1068 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1069 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1070 GLenum SourceA
[MAX_COMBINER_TERMS
];
1071 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1072 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1073 GLenum OperandA
[MAX_COMBINER_TERMS
];
1074 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1075 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1076 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1077 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1082 * TexGenEnabled flags.
1089 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1094 * Bit flag versions of the corresponding GL_ constants.
1097 #define TEXGEN_SPHERE_MAP 0x1
1098 #define TEXGEN_OBJ_LINEAR 0x2
1099 #define TEXGEN_EYE_LINEAR 0x4
1100 #define TEXGEN_REFLECTION_MAP_NV 0x8
1101 #define TEXGEN_NORMAL_MAP_NV 0x10
1103 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1104 TEXGEN_REFLECTION_MAP_NV | \
1105 TEXGEN_NORMAL_MAP_NV)
1106 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1107 TEXGEN_REFLECTION_MAP_NV | \
1108 TEXGEN_NORMAL_MAP_NV | \
1114 /** Tex-gen enabled for texture unit? */
1115 #define ENABLE_TEXGEN(unit) (1 << (unit))
1117 /** Non-identity texture matrix for texture unit? */
1118 #define ENABLE_TEXMAT(unit) (1 << (unit))
1122 * Texture coord generation state.
1126 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1127 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1128 GLfloat ObjectPlane
[4];
1129 GLfloat EyePlane
[4];
1134 * Texture unit state. Contains enable flags, texture environment/function/
1135 * combiners, texgen state, and pointers to current texture objects.
1137 struct gl_texture_unit
1139 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1141 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1142 GLclampf EnvColor
[4];
1143 GLfloat EnvColorUnclamped
[4];
1145 struct gl_texgen GenS
;
1146 struct gl_texgen GenT
;
1147 struct gl_texgen GenR
;
1148 struct gl_texgen GenQ
;
1149 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1150 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1152 GLfloat LodBias
; /**< for biasing mipmap levels */
1154 /** Texture targets that have a non-default texture bound */
1155 GLbitfield _BoundTextures
;
1157 /** Current sampler object (GL_ARB_sampler_objects) */
1158 struct gl_sampler_object
*Sampler
;
1161 * \name GL_EXT_texture_env_combine
1163 struct gl_tex_env_combine_state Combine
;
1166 * Derived state based on \c EnvMode and the \c BaseFormat of the
1167 * currently enabled texture.
1169 struct gl_tex_env_combine_state _EnvMode
;
1172 * Currently enabled combiner state. This will point to either
1173 * \c Combine or \c _EnvMode.
1175 struct gl_tex_env_combine_state
*_CurrentCombine
;
1177 /** Current texture object pointers */
1178 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1180 /** Points to highest priority, complete and enabled texture object */
1181 struct gl_texture_object
*_Current
;
1187 * Texture attribute group (GL_TEXTURE_BIT).
1189 struct gl_texture_attrib
1191 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1193 /** GL_ARB_seamless_cubemap */
1194 GLboolean CubeMapSeamless
;
1196 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1198 /** GL_ARB_texture_buffer_object */
1199 struct gl_buffer_object
*BufferObject
;
1201 /** Texture coord units/sets used for fragment texturing */
1202 GLbitfield _EnabledCoordUnits
;
1204 /** Texture coord units that have texgen enabled */
1205 GLbitfield _TexGenEnabled
;
1207 /** Texture coord units that have non-identity matrices */
1208 GLbitfield _TexMatEnabled
;
1210 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1211 GLbitfield _GenFlags
;
1213 /** Largest index of a texture unit with _Current != NULL. */
1214 GLint _MaxEnabledTexImageUnit
;
1216 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1217 GLint NumCurrentTexUsed
;
1219 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1224 * Data structure representing a single clip plane (e.g. one of the elements
1225 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1227 typedef GLfloat gl_clip_plane
[4];
1231 * Transformation attribute group (GL_TRANSFORM_BIT).
1233 struct gl_transform_attrib
1235 GLenum MatrixMode
; /**< Matrix mode */
1236 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1237 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1238 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1239 GLboolean Normalize
; /**< Normalize all normals? */
1240 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1241 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1242 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1243 /** GL_ARB_clip_control */
1244 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1245 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1250 * Viewport attribute group (GL_VIEWPORT_BIT).
1252 struct gl_viewport_attrib
1254 GLfloat X
, Y
; /**< position */
1255 GLfloat Width
, Height
; /**< size */
1256 GLdouble Near
, Far
; /**< Depth buffer range */
1265 } gl_map_buffer_index
;
1269 * Fields describing a mapped buffer range.
1271 struct gl_buffer_mapping
{
1272 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1273 GLvoid
*Pointer
; /**< User-space address of mapping */
1274 GLintptr Offset
; /**< Mapped offset */
1275 GLsizeiptr Length
; /**< Mapped length */
1280 * Usages we've seen for a buffer object.
1283 USAGE_UNIFORM_BUFFER
= 0x1,
1284 USAGE_TEXTURE_BUFFER
= 0x2,
1285 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1286 USAGE_SHADER_STORAGE_BUFFER
= 0x8,
1287 USAGE_TRANSFORM_FEEDBACK_BUFFER
= 0x10,
1288 USAGE_PIXEL_PACK_BUFFER
= 0x20,
1289 USAGE_DISABLE_MINMAX_CACHE
= 0x40,
1294 * GL_ARB_vertex/pixel_buffer_object buffer object
1296 struct gl_buffer_object
1301 GLchar
*Label
; /**< GL_KHR_debug */
1302 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1303 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1304 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1305 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1306 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1307 GLboolean Written
; /**< Ever written to? (for debugging) */
1308 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1309 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1310 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1312 /** Counters used for buffer usage warnings */
1313 GLuint NumSubDataCalls
;
1314 GLuint NumMapBufferWriteCalls
;
1316 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1318 /** Memoization of min/max index computations for static index buffers */
1319 struct hash_table
*MinMaxCache
;
1320 unsigned MinMaxCacheHitIndices
;
1321 unsigned MinMaxCacheMissIndices
;
1322 bool MinMaxCacheDirty
;
1327 * Client pixel packing/unpacking attributes
1329 struct gl_pixelstore_attrib
1337 GLboolean SwapBytes
;
1339 GLboolean Invert
; /**< GL_MESA_pack_invert */
1340 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1341 GLint CompressedBlockHeight
;
1342 GLint CompressedBlockDepth
;
1343 GLint CompressedBlockSize
;
1344 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1349 * Vertex array information which is derived from gl_array_attributes
1350 * and gl_vertex_buffer_binding information. Used by the VBO module and
1353 struct gl_vertex_array
1355 GLint Size
; /**< components per element (1,2,3,4) */
1356 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1357 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1358 GLsizei StrideB
; /**< actual stride in bytes */
1359 GLuint _ElementSize
; /**< size of each element in bytes */
1360 const GLubyte
*Ptr
; /**< Points to array data */
1361 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1362 GLboolean Integer
; /**< Integer-valued? */
1363 GLboolean Doubles
; /**< double precision values are not converted to floats */
1364 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1366 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1371 * Attributes to describe a vertex array.
1373 * Contains the size, type, format and normalization flag,
1374 * along with the index of a vertex buffer binding point.
1376 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1377 * and is only present for backwards compatibility reasons.
1378 * Rendering always uses VERTEX_BINDING_STRIDE.
1379 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1380 * and VERTEX_BINDING_STRIDE to the same value, while
1381 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1383 struct gl_array_attributes
1385 GLint Size
; /**< Components per element (1,2,3,4) */
1386 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1387 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1388 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1389 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1390 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1391 GLboolean Enabled
; /**< Whether the array is enabled */
1392 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1393 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1394 GLboolean Doubles
; /**< double precision values are not converted to floats */
1395 GLuint _ElementSize
; /**< Size of each element in bytes */
1396 GLuint BufferBindingIndex
; /**< Vertex buffer binding */
1401 * This describes the buffer object used for a vertex array (or
1402 * multiple vertex arrays). If BufferObj points to the default/null
1403 * buffer object, then the vertex array lives in user memory and not a VBO.
1405 struct gl_vertex_buffer_binding
1407 GLintptr Offset
; /**< User-specified offset */
1408 GLsizei Stride
; /**< User-specified stride */
1409 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1410 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1411 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1416 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1417 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1420 struct gl_vertex_array_object
1422 /** Name of the VAO as received from glGenVertexArray. */
1427 GLchar
*Label
; /**< GL_KHR_debug */
1432 * Does the VAO use ARB semantics or Apple semantics?
1434 * There are several ways in which ARB_vertex_array_object and
1435 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1438 * - ARB VAOs require that all array data be sourced from vertex buffer
1439 * objects, but Apple VAOs do not.
1441 * - ARB VAOs require that names come from GenVertexArrays.
1443 * This flag notes which behavior governs this VAO.
1445 GLboolean ARBsemantics
;
1448 * Has this array object been bound?
1450 GLboolean EverBound
;
1453 * Derived vertex attribute arrays
1455 * This is a legacy data structure created from gl_vertex_attrib_array and
1456 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1458 struct gl_vertex_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1460 /** Vertex attribute arrays */
1461 struct gl_array_attributes VertexAttrib
[VERT_ATTRIB_MAX
];
1463 /** Vertex buffer bindings */
1464 struct gl_vertex_buffer_binding BufferBinding
[VERT_ATTRIB_MAX
];
1466 /** Mask indicating which vertex arrays have vertex buffer associated. */
1467 GLbitfield64 VertexAttribBufferMask
;
1469 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1470 GLbitfield64 _Enabled
;
1472 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1473 GLbitfield64 NewArrays
;
1475 /** The index buffer (also known as the element array buffer in OpenGL). */
1476 struct gl_buffer_object
*IndexBufferObj
;
1480 /** Used to signal when transitioning from one kind of drawing method
1484 DRAW_NONE
, /**< Initial value only */
1491 * Enum for the OpenGL APIs we know about and may support.
1493 * NOTE: This must match the api_enum table in
1494 * src/mesa/main/get_hash_generator.py
1498 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1502 API_OPENGL_LAST
= API_OPENGL_CORE
1506 * Vertex array state
1508 struct gl_array_attrib
1510 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1511 struct gl_vertex_array_object
*VAO
;
1513 /** The default vertex array object */
1514 struct gl_vertex_array_object
*DefaultVAO
;
1516 /** The last VAO accessed by a DSA function */
1517 struct gl_vertex_array_object
*LastLookedUpVAO
;
1519 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1520 struct _mesa_HashTable
*Objects
;
1522 GLint ActiveTexture
; /**< Client Active Texture */
1523 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1524 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1527 * \name Primitive restart controls
1529 * Primitive restart is enabled if either \c PrimitiveRestart or
1530 * \c PrimitiveRestartFixedIndex is set.
1533 GLboolean PrimitiveRestart
;
1534 GLboolean PrimitiveRestartFixedIndex
;
1535 GLboolean _PrimitiveRestart
;
1536 GLuint RestartIndex
;
1539 /** One of the DRAW_xxx flags, not consumed by drivers */
1540 gl_draw_method DrawMethod
;
1542 /* GL_ARB_vertex_buffer_object */
1543 struct gl_buffer_object
*ArrayBufferObj
;
1546 * Vertex arrays as consumed by a driver.
1547 * The array pointer is set up only by the VBO module.
1549 const struct gl_vertex_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1551 /** Legal array datatypes and the API for which they have been computed */
1552 GLbitfield LegalTypesMask
;
1553 gl_api LegalTypesMaskAPI
;
1558 * Feedback buffer state
1563 GLbitfield _Mask
; /**< FB_* bits */
1571 * Selection buffer state
1575 GLuint
*Buffer
; /**< selection buffer */
1576 GLuint BufferSize
; /**< size of the selection buffer */
1577 GLuint BufferCount
; /**< number of values in the selection buffer */
1578 GLuint Hits
; /**< number of records in the selection buffer */
1579 GLuint NameStackDepth
; /**< name stack depth */
1580 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1581 GLboolean HitFlag
; /**< hit flag */
1582 GLfloat HitMinZ
; /**< minimum hit depth */
1583 GLfloat HitMaxZ
; /**< maximum hit depth */
1588 * 1-D Evaluator control points
1592 GLuint Order
; /**< Number of control points */
1593 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1594 GLfloat
*Points
; /**< Points to contiguous control points */
1599 * 2-D Evaluator control points
1603 GLuint Uorder
; /**< Number of control points in U dimension */
1604 GLuint Vorder
; /**< Number of control points in V dimension */
1607 GLfloat
*Points
; /**< Points to contiguous control points */
1612 * All evaluator control point state
1614 struct gl_evaluators
1620 struct gl_1d_map Map1Vertex3
;
1621 struct gl_1d_map Map1Vertex4
;
1622 struct gl_1d_map Map1Index
;
1623 struct gl_1d_map Map1Color4
;
1624 struct gl_1d_map Map1Normal
;
1625 struct gl_1d_map Map1Texture1
;
1626 struct gl_1d_map Map1Texture2
;
1627 struct gl_1d_map Map1Texture3
;
1628 struct gl_1d_map Map1Texture4
;
1635 struct gl_2d_map Map2Vertex3
;
1636 struct gl_2d_map Map2Vertex4
;
1637 struct gl_2d_map Map2Index
;
1638 struct gl_2d_map Map2Color4
;
1639 struct gl_2d_map Map2Normal
;
1640 struct gl_2d_map Map2Texture1
;
1641 struct gl_2d_map Map2Texture2
;
1642 struct gl_2d_map Map2Texture3
;
1643 struct gl_2d_map Map2Texture4
;
1648 struct gl_transform_feedback_varying_info
1659 * Per-output info vertex shaders for transform feedback.
1661 struct gl_transform_feedback_output
1663 uint32_t OutputRegister
;
1664 uint32_t OutputBuffer
;
1665 uint32_t NumComponents
;
1668 /** offset (in DWORDs) of this output within the interleaved structure */
1672 * Offset into the output register of the data to output. For example,
1673 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1674 * offset is in the y and z components of the output register.
1676 uint32_t ComponentOffset
;
1680 struct gl_transform_feedback_buffer
1684 uint32_t NumVaryings
;
1687 * Total number of components stored in each buffer. This may be used by
1688 * hardware back-ends to determine the correct stride when interleaving
1689 * multiple transform feedback outputs in the same buffer.
1694 * Which transform feedback stream this buffer binding is associated with.
1700 /** Post-link transform feedback info. */
1701 struct gl_transform_feedback_info
1703 unsigned NumOutputs
;
1705 /* Bitmask of active buffer indices. */
1706 unsigned ActiveBuffers
;
1708 struct gl_transform_feedback_output
*Outputs
;
1710 /** Transform feedback varyings used for the linking of this shader program.
1712 * Use for glGetTransformFeedbackVarying().
1714 struct gl_transform_feedback_varying_info
*Varyings
;
1717 struct gl_transform_feedback_buffer Buffers
[MAX_FEEDBACK_BUFFERS
];
1722 * Transform feedback object state
1724 struct gl_transform_feedback_object
1726 GLuint Name
; /**< AKA the object ID */
1728 GLchar
*Label
; /**< GL_KHR_debug */
1729 GLboolean Active
; /**< Is transform feedback enabled? */
1730 GLboolean Paused
; /**< Is transform feedback paused? */
1731 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1733 GLboolean EverBound
; /**< Has this object been bound? */
1736 * GLES: if Active is true, remaining number of primitives which can be
1737 * rendered without overflow. This is necessary to track because GLES
1738 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1739 * glDrawArraysInstanced would overflow transform feedback buffers.
1740 * Undefined if Active is false.
1742 * Not tracked for desktop GL since it's unnecessary.
1744 unsigned GlesRemainingPrims
;
1747 * The program active when BeginTransformFeedback() was called.
1748 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1749 * where stage is the pipeline stage that is the source of data for
1750 * transform feedback.
1752 struct gl_program
*program
;
1754 /** The feedback buffers */
1755 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1756 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1758 /** Start of feedback data in dest buffer */
1759 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1762 * Max data to put into dest buffer (in bytes). Computed based on
1763 * RequestedSize and the actual size of the buffer.
1765 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1768 * Size that was specified when the buffer was bound. If the buffer was
1769 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1772 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1777 * Context state for transform feedback.
1779 struct gl_transform_feedback_state
1781 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1783 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1784 struct gl_buffer_object
*CurrentBuffer
;
1786 /** The table of all transform feedback objects */
1787 struct _mesa_HashTable
*Objects
;
1789 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1790 struct gl_transform_feedback_object
*CurrentObject
;
1792 /** The default xform-fb object (Name==0) */
1793 struct gl_transform_feedback_object
*DefaultObject
;
1798 * A "performance monitor" as described in AMD_performance_monitor.
1800 struct gl_perf_monitor_object
1804 /** True if the monitor is currently active (Begin called but not End). */
1808 * True if the monitor has ended.
1810 * This is distinct from !Active because it may never have began.
1815 * A list of groups with currently active counters.
1817 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1819 unsigned *ActiveGroups
;
1822 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1824 * Checking whether counter 'c' in group 'g' is active can be done via:
1826 * BITSET_TEST(ActiveCounters[g], c)
1828 GLuint
**ActiveCounters
;
1832 union gl_perf_monitor_counter_value
1840 struct gl_perf_monitor_counter
1842 /** Human readable name for the counter. */
1846 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1847 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1851 /** Minimum counter value. */
1852 union gl_perf_monitor_counter_value Minimum
;
1854 /** Maximum counter value. */
1855 union gl_perf_monitor_counter_value Maximum
;
1859 struct gl_perf_monitor_group
1861 /** Human readable name for the group. */
1865 * Maximum number of counters in this group which can be active at the
1868 GLuint MaxActiveCounters
;
1870 /** Array of counters within this group. */
1871 const struct gl_perf_monitor_counter
*Counters
;
1877 * A query object instance as described in INTEL_performance_query.
1879 * NB: We want to keep this and the corresponding backend structure
1880 * relatively lean considering that applications may expect to
1881 * allocate enough objects to be able to query around all draw calls
1884 struct gl_perf_query_object
1886 GLuint Id
; /**< hash table ID/name */
1887 unsigned Used
:1; /**< has been used for 1 or more queries */
1888 unsigned Active
:1; /**< inside Begin/EndPerfQuery */
1889 unsigned Ready
:1; /**< result is ready? */
1894 * Context state for AMD_performance_monitor.
1896 struct gl_perf_monitor_state
1898 /** Array of performance monitor groups (indexed by group ID) */
1899 const struct gl_perf_monitor_group
*Groups
;
1902 /** The table of all performance monitors. */
1903 struct _mesa_HashTable
*Monitors
;
1908 * Context state for INTEL_performance_query.
1910 struct gl_perf_query_state
1912 struct _mesa_HashTable
*Objects
; /**< The table of all performance query objects */
1917 * Names of the various vertex/fragment program register files, etc.
1919 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1920 * All values should fit in a 4-bit field.
1922 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1923 * considered to be "uniform" variables since they can only be set outside
1924 * glBegin/End. They're also all stored in the same Parameters array.
1928 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1929 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1930 PROGRAM_INPUT
, /**< machine->Inputs[] */
1931 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1932 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1933 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1934 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1935 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1936 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1937 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1938 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1939 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1940 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
1941 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
1942 PROGRAM_MEMORY
, /**< for shared, global and local memory */
1943 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
1949 * Base class for any kind of program object
1953 /** FIXME: This must be first until we split shader_info from nir_shader */
1954 struct shader_info info
;
1958 GLubyte
*String
; /**< Null-terminated program text */
1960 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1961 GLenum Format
; /**< String encoding format */
1963 GLboolean _Used
; /**< Ever used for drawing? Used for debugging */
1965 struct nir_shader
*nir
;
1967 bool is_arb_asm
; /** Is this an ARB assembly-style program */
1969 /** Is this program written to on disk shader cache */
1970 bool program_written_to_cache
;
1972 GLbitfield64 SecondaryOutputsWritten
; /**< Subset of OutputsWritten outputs written with non-zero index. */
1973 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1974 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1975 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1976 GLbitfield ExternalSamplersUsed
; /**< Texture units used for samplerExternalOES */
1978 /* Fragement shader only fields */
1979 GLboolean OriginUpperLeft
;
1980 GLboolean PixelCenterInteger
;
1982 /** Named parameters, constants, etc. from program text */
1983 struct gl_program_parameter_list
*Parameters
;
1985 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1986 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1988 /* FIXME: We should be able to make this struct a union. However some
1989 * drivers (i915/fragment_programs, swrast/prog_execute) mix the use of
1990 * these fields, we should fix this.
1993 /** Fields used by GLSL programs */
1995 /** Data shared by gl_program and gl_shader_program */
1996 struct gl_shader_program_data
*data
;
1998 struct gl_active_atomic_buffer
**AtomicBuffers
;
2000 /** Post-link transform feedback info. */
2001 struct gl_transform_feedback_info
*LinkedTransformFeedback
;
2004 * Number of types for subroutine uniforms.
2006 GLuint NumSubroutineUniformTypes
;
2009 * Subroutine uniform remap table
2010 * based on the program level uniform remap table.
2012 GLuint NumSubroutineUniforms
; /* non-sparse total */
2013 GLuint NumSubroutineUniformRemapTable
;
2014 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
2017 * Num of subroutine functions for this stage and storage for them.
2019 GLuint NumSubroutineFunctions
;
2020 GLuint MaxSubroutineFunctionIndex
;
2021 struct gl_subroutine_function
*SubroutineFunctions
;
2024 * Map from image uniform index to image unit (set by glUniform1i())
2026 * An image uniform index is associated with each image uniform by
2027 * the linker. The image index associated with each uniform is
2028 * stored in the \c gl_uniform_storage::image field.
2030 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2033 * Access qualifier specified in the shader for each image uniform
2034 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2037 * It may be different, though only more strict than the value of
2038 * \c gl_image_unit::Access for the corresponding image unit.
2040 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2042 struct gl_uniform_block
**UniformBlocks
;
2043 struct gl_uniform_block
**ShaderStorageBlocks
;
2045 /** Which texture target is being sampled
2046 * (TEXTURE_1D/2D/3D/etc_INDEX)
2048 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2053 * A bitmask of gl_advanced_blend_mode values
2055 GLbitfield BlendSupport
;
2060 /** ARB assembly-style program fields */
2062 struct prog_instruction
*Instructions
;
2065 * Local parameters used by the program.
2067 * It's dynamically allocated because it is rarely used (just
2068 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries
2069 * once it's allocated.
2071 GLfloat (*LocalParams
)[4];
2073 /** Bitmask of which register files are read/written with indirect
2074 * addressing. Mask of (1 << PROGRAM_x) bits.
2076 GLbitfield IndirectRegisterFiles
;
2078 /** Logical counts */
2080 GLuint NumInstructions
;
2081 GLuint NumTemporaries
;
2082 GLuint NumParameters
;
2083 GLuint NumAttributes
;
2084 GLuint NumAddressRegs
;
2085 GLuint NumAluInstructions
;
2086 GLuint NumTexInstructions
;
2087 GLuint NumTexIndirections
;
2089 /** Native, actual h/w counts */
2091 GLuint NumNativeInstructions
;
2092 GLuint NumNativeTemporaries
;
2093 GLuint NumNativeParameters
;
2094 GLuint NumNativeAttributes
;
2095 GLuint NumNativeAddressRegs
;
2096 GLuint NumNativeAluInstructions
;
2097 GLuint NumNativeTexInstructions
;
2098 GLuint NumNativeTexIndirections
;
2101 /** Used by ARB assembly-style programs. Can only be true for vertex
2104 GLboolean IsPositionInvariant
;
2111 * State common to vertex and fragment programs.
2113 struct gl_program_state
2115 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2116 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2121 * Context state for vertex programs.
2123 struct gl_vertex_program_state
2125 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2126 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2127 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2128 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2129 /** Computed two sided lighting for fixed function/programs. */
2130 GLboolean _TwoSideEnabled
;
2131 struct gl_program
*Current
; /**< User-bound vertex program */
2133 /** Currently enabled and valid vertex program (including internal
2134 * programs, user-defined vertex programs and GLSL vertex shaders).
2135 * This is the program we must use when rendering.
2137 struct gl_program
*_Current
;
2139 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2141 /** Should fixed-function T&L be implemented with a vertex prog? */
2142 GLboolean _MaintainTnlProgram
;
2144 /** Program to emulate fixed-function T&L (see above) */
2145 struct gl_program
*_TnlProgram
;
2147 /** Cache of fixed-function programs */
2148 struct gl_program_cache
*Cache
;
2150 GLboolean _Overriden
;
2154 * Context state for tessellation control programs.
2156 struct gl_tess_ctrl_program_state
2158 /** Currently bound and valid shader. */
2159 struct gl_program
*_Current
;
2161 GLint patch_vertices
;
2162 GLfloat patch_default_outer_level
[4];
2163 GLfloat patch_default_inner_level
[2];
2167 * Context state for tessellation evaluation programs.
2169 struct gl_tess_eval_program_state
2171 /** Currently bound and valid shader. */
2172 struct gl_program
*_Current
;
2176 * Context state for geometry programs.
2178 struct gl_geometry_program_state
2180 /** Currently enabled and valid program (including internal programs
2181 * and compiled shader programs).
2183 struct gl_program
*_Current
;
2187 * Context state for fragment programs.
2189 struct gl_fragment_program_state
2191 GLboolean Enabled
; /**< User-set fragment program enable flag */
2192 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2193 struct gl_program
*Current
; /**< User-bound fragment program */
2195 /** Currently enabled and valid fragment program (including internal
2196 * programs, user-defined fragment programs and GLSL fragment shaders).
2197 * This is the program we must use when rendering.
2199 struct gl_program
*_Current
;
2201 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2203 /** Should fixed-function texturing be implemented with a fragment prog? */
2204 GLboolean _MaintainTexEnvProgram
;
2206 /** Program to emulate fixed-function texture env/combine (see above) */
2207 struct gl_program
*_TexEnvProgram
;
2209 /** Cache of fixed-function programs */
2210 struct gl_program_cache
*Cache
;
2215 * Context state for compute programs.
2217 struct gl_compute_program_state
2219 /** Currently enabled and valid program (including internal programs
2220 * and compiled shader programs).
2222 struct gl_program
*_Current
;
2227 * ATI_fragment_shader runtime state
2230 struct atifs_instruction
;
2231 struct atifs_setupinst
;
2234 * ATI fragment shader
2236 struct ati_fragment_shader
2240 struct atifs_instruction
*Instructions
[2];
2241 struct atifs_setupinst
*SetupInst
[2];
2242 GLfloat Constants
[8][4];
2243 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2244 GLubyte numArithInstr
[2];
2245 GLubyte regsAssigned
[2];
2246 GLubyte NumPasses
; /**< 1 or 2 */
2248 GLubyte last_optype
;
2249 GLboolean interpinp1
;
2252 struct gl_program
*Program
;
2256 * Context state for GL_ATI_fragment_shader
2258 struct gl_ati_fragment_shader_state
2261 GLboolean _Enabled
; /**< enabled and valid shader? */
2262 GLboolean Compiling
;
2263 GLfloat GlobalConstants
[8][4];
2264 struct ati_fragment_shader
*Current
;
2268 * Shader subroutine function definition
2270 struct gl_subroutine_function
2274 int num_compat_types
;
2275 const struct glsl_type
**types
;
2279 * Shader information needed by both gl_shader and gl_linked shader.
2281 struct gl_shader_info
2284 * Tessellation Control shader state from layout qualifiers.
2288 * 0 - vertices not declared in shader, or
2289 * 1 .. GL_MAX_PATCH_VERTICES
2295 * Tessellation Evaluation shader state from layout qualifiers.
2299 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2302 GLenum PrimitiveMode
;
2304 enum gl_tess_spacing Spacing
;
2307 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2311 * 1, 0, or -1 if it's not set in this shader.
2317 * Geometry shader state from GLSL 1.50 layout qualifiers.
2322 * 0 - Invocations count not declared in shader, or
2323 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2327 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2328 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2333 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2334 * it's not set in this shader.
2340 * Compute shader state from ARB_compute_shader and
2341 * ARB_compute_variable_group_size layout qualifiers.
2345 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2346 * it's not set in this shader.
2348 unsigned LocalSize
[3];
2351 * Whether a variable work group size has been specified as defined by
2352 * ARB_compute_variable_group_size.
2354 bool LocalSizeVariable
;
2359 * A linked GLSL shader object.
2361 struct gl_linked_shader
2363 gl_shader_stage Stage
;
2366 unsigned SourceChecksum
;
2369 struct gl_program
*Program
; /**< Post-compile assembly code */
2372 * \name Sampler tracking
2374 * \note Each of these fields is only set post-linking.
2377 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2381 * Number of default uniform block components used by this shader.
2383 * This field is only set post-linking.
2385 unsigned num_uniform_components
;
2388 * Number of combined uniform components used by this shader.
2390 * This field is only set post-linking. It is the sum of the uniform block
2391 * sizes divided by sizeof(float), and num_uniform_compoennts.
2393 unsigned num_combined_uniform_components
;
2395 struct exec_list
*ir
;
2396 struct exec_list
*packed_varyings
;
2397 struct exec_list
*fragdata_arrays
;
2398 struct glsl_symbol_table
*symbols
;
2401 static inline GLbitfield
gl_external_samplers(struct gl_program
*prog
)
2403 GLbitfield external_samplers
= 0;
2404 GLbitfield mask
= prog
->SamplersUsed
;
2407 int idx
= u_bit_scan(&mask
);
2408 if (prog
->sh
.SamplerTargets
[idx
] == TEXTURE_EXTERNAL_INDEX
)
2409 external_samplers
|= (1 << idx
);
2412 return external_samplers
;
2416 * Compile status enum. compile_skipped is used to indicate the compile
2417 * was skipped due to the shader matching one that's been seen before by
2418 * the on-disk cache.
2420 enum gl_compile_status
2422 compile_failure
= 0,
2428 * A GLSL shader object.
2432 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2433 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2434 * Must be the first field.
2437 gl_shader_stage Stage
;
2438 GLuint Name
; /**< AKA the handle */
2439 GLint RefCount
; /**< Reference count */
2440 GLchar
*Label
; /**< GL_KHR_debug */
2441 unsigned char sha1
[20]; /**< SHA1 hash of pre-processed source */
2442 GLboolean DeletePending
;
2443 enum gl_compile_status CompileStatus
;
2444 bool IsES
; /**< True if this shader uses GLSL ES */
2447 unsigned SourceChecksum
; /**< for debug/logging purposes */
2449 const GLchar
*Source
; /**< Source code string */
2451 const GLchar
*FallbackSource
; /**< Fallback string used by on-disk cache*/
2455 unsigned Version
; /**< GLSL version used for linking */
2457 struct exec_list
*ir
;
2458 struct glsl_symbol_table
*symbols
;
2461 * A bitmask of gl_advanced_blend_mode values
2463 GLbitfield BlendSupport
;
2466 * Whether early fragment tests are enabled as defined by
2467 * ARB_shader_image_load_store.
2469 bool EarlyFragmentTests
;
2471 bool ARB_fragment_coord_conventions_enable
;
2473 bool redeclares_gl_fragcoord
;
2474 bool uses_gl_fragcoord
;
2476 bool PostDepthCoverage
;
2480 * Fragment shader state from GLSL 1.50 layout qualifiers.
2482 bool origin_upper_left
;
2483 bool pixel_center_integer
;
2485 /** Global xfb_stride out qualifier if any */
2486 GLuint TransformFeedbackBufferStride
[MAX_FEEDBACK_BUFFERS
];
2488 struct gl_shader_info info
;
2492 struct gl_uniform_buffer_variable
2497 * Name of the uniform as seen by glGetUniformIndices.
2499 * glGetUniformIndices requires that the block instance index \b not be
2500 * present in the name of queried uniforms.
2503 * \c gl_uniform_buffer_variable::IndexName and
2504 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2508 const struct glsl_type
*Type
;
2509 unsigned int Offset
;
2514 enum gl_uniform_block_packing
2523 struct gl_uniform_block
2525 /** Declared name of the uniform block */
2528 /** Array of supplemental information about UBO ir_variables. */
2529 struct gl_uniform_buffer_variable
*Uniforms
;
2533 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2534 * with glBindBufferBase to bind a buffer object to this uniform block. When
2535 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2540 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2541 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2543 GLuint UniformBufferSize
;
2545 /** Stages that reference this block */
2549 * Linearized array index for uniform block instance arrays
2551 * Given a uniform block instance array declared with size
2552 * blk[s_0][s_1]..[s_m], the block referenced by blk[i_0][i_1]..[i_m] will
2553 * have the linearized array index
2556 * i_m + ∑ i_j * ∏ s_k
2559 * For a uniform block instance that is not an array, this is always 0.
2561 uint8_t linearized_array_index
;
2564 * Layout specified in the shader
2566 * This isn't accessible through the API, but it is used while
2567 * cross-validating uniform blocks.
2569 enum gl_uniform_block_packing _Packing
;
2570 GLboolean _RowMajor
;
2574 * Structure that represents a reference to an atomic buffer from some
2577 struct gl_active_atomic_buffer
2579 /** Uniform indices of the atomic counters declared within it. */
2583 /** Binding point index associated with it. */
2586 /** Minimum reasonable size it is expected to have. */
2589 /** Shader stages making use of it. */
2590 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2594 * Data container for shader queries. This holds only the minimal
2595 * amount of required information for resource queries to work.
2597 struct gl_shader_variable
2600 * Declared type of the variable
2602 const struct glsl_type
*type
;
2605 * If the variable is in an interface block, this is the type of the block.
2607 const struct glsl_type
*interface_type
;
2610 * For variables inside structs (possibly recursively), this is the
2611 * outermost struct type.
2613 const struct glsl_type
*outermost_struct_type
;
2616 * Declared name of the variable
2621 * Storage location of the base of this variable
2623 * The precise meaning of this field depends on the nature of the variable.
2625 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2626 * - Vertex shader output: one of the values from \c gl_varying_slot.
2627 * - Geometry shader input: one of the values from \c gl_varying_slot.
2628 * - Geometry shader output: one of the values from \c gl_varying_slot.
2629 * - Fragment shader input: one of the values from \c gl_varying_slot.
2630 * - Fragment shader output: one of the values from \c gl_frag_result.
2631 * - Uniforms: Per-stage uniform slot number for default uniform block.
2632 * - Uniforms: Index within the uniform block definition for UBO members.
2633 * - Non-UBO Uniforms: explicit location until linking then reused to
2634 * store uniform slot number.
2635 * - Other: This field is not currently used.
2637 * If the variable is a uniform, shader input, or shader output, and the
2638 * slot has not been assigned, the value will be -1.
2643 * Specifies the first component the variable is stored in as per
2644 * ARB_enhanced_layouts.
2646 unsigned component
:2;
2649 * Output index for dual source blending.
2652 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2658 * Specifies whether a shader input/output is per-patch in tessellation
2664 * Storage class of the variable.
2666 * \sa (n)ir_variable_mode
2671 * Interpolation mode for shader inputs / outputs
2673 * \sa glsl_interp_mode
2675 unsigned interpolation
:2;
2678 * Was the location explicitly set in the shader?
2680 * If the location is explicitly set in the shader, it \b cannot be changed
2681 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2684 unsigned explicit_location
:1;
2687 * Precision qualifier.
2689 unsigned precision
:2;
2693 * Active resource in a gl_shader_program
2695 struct gl_program_resource
2697 GLenum Type
; /** Program interface type. */
2698 const void *Data
; /** Pointer to resource associated data structure. */
2699 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2703 * Link status enum. linking_skipped is used to indicate linking
2704 * was skipped due to the shader being loaded from the on-disk cache.
2708 linking_failure
= 0,
2714 * A data structure to be shared by gl_shader_program and gl_program.
2716 struct gl_shader_program_data
2718 GLint RefCount
; /**< Reference count */
2720 /** SHA1 hash of linked shader program */
2721 unsigned char sha1
[20];
2723 unsigned NumUniformStorage
;
2724 unsigned NumHiddenUniforms
;
2725 struct gl_uniform_storage
*UniformStorage
;
2727 unsigned NumUniformBlocks
;
2728 struct gl_uniform_block
*UniformBlocks
;
2730 unsigned NumShaderStorageBlocks
;
2731 struct gl_uniform_block
*ShaderStorageBlocks
;
2733 struct gl_active_atomic_buffer
*AtomicBuffers
;
2734 unsigned NumAtomicBuffers
;
2736 /* Shader cache variables used during restore */
2737 unsigned NumUniformDataSlots
;
2738 union gl_constant_value
*UniformDataSlots
;
2740 bool cache_fallback
;
2742 /** List of all active resources after linking. */
2743 struct gl_program_resource
*ProgramResourceList
;
2744 unsigned NumProgramResourceList
;
2746 enum gl_link_status LinkStatus
; /**< GL_LINK_STATUS */
2747 GLboolean Validated
;
2750 unsigned Version
; /**< GLSL version used for linking */
2752 /* Mask of stages this program was linked against */
2753 unsigned linked_stages
;
2757 * A GLSL program object.
2758 * Basically a linked collection of vertex and fragment shaders.
2760 struct gl_shader_program
2762 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2763 GLuint Name
; /**< aka handle or ID */
2764 GLchar
*Label
; /**< GL_KHR_debug */
2765 GLint RefCount
; /**< Reference count */
2766 GLboolean DeletePending
;
2769 * Is the application intending to glGetProgramBinary this program?
2771 GLboolean BinaryRetreivableHint
;
2774 * Indicates whether program can be bound for individual pipeline stages
2775 * using UseProgramStages after it is next linked.
2777 GLboolean SeparateShader
;
2779 GLuint NumShaders
; /**< number of attached shaders */
2780 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2783 * User-defined attribute bindings
2785 * These are set via \c glBindAttribLocation and are used to direct the
2786 * GLSL linker. These are \b not the values used in the compiled shader,
2787 * and they are \b not the values returned by \c glGetAttribLocation.
2789 struct string_to_uint_map
*AttributeBindings
;
2792 * User-defined fragment data bindings
2794 * These are set via \c glBindFragDataLocation and are used to direct the
2795 * GLSL linker. These are \b not the values used in the compiled shader,
2796 * and they are \b not the values returned by \c glGetFragDataLocation.
2798 struct string_to_uint_map
*FragDataBindings
;
2799 struct string_to_uint_map
*FragDataIndexBindings
;
2802 * Transform feedback varyings last specified by
2803 * glTransformFeedbackVaryings().
2805 * For the current set of transform feedback varyings used for transform
2806 * feedback output, see LinkedTransformFeedback.
2810 /** Global xfb_stride out qualifier if any */
2811 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2813 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2814 } TransformFeedback
;
2816 struct gl_program
*last_vert_prog
;
2818 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2819 enum gl_frag_depth_layout FragDepthLayout
;
2822 * Geometry shader state - copied into gl_program by
2823 * _mesa_copy_linked_program_data().
2828 bool UsesEndPrimitive
;
2833 * Compute shader state - copied into gl_program by
2834 * _mesa_copy_linked_program_data().
2838 * Size of shared variables accessed by the compute shader.
2840 unsigned SharedSize
;
2843 /** Data shared by gl_program and gl_shader_program */
2844 struct gl_shader_program_data
*data
;
2847 * Mapping from GL uniform locations returned by \c glUniformLocation to
2848 * UniformStorage entries. Arrays will have multiple contiguous slots
2849 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2851 unsigned NumUniformRemapTable
;
2852 struct gl_uniform_storage
**UniformRemapTable
;
2855 * Sometimes there are empty slots left over in UniformRemapTable after we
2856 * allocate slots to explicit locations. This list stores the blocks of
2857 * continuous empty slots inside UniformRemapTable.
2859 struct exec_list EmptyUniformLocations
;
2862 * Total number of explicit uniform location including inactive uniforms.
2864 unsigned NumExplicitUniformLocations
;
2867 * Map of active uniform names to locations
2869 * Maps any active uniform that is not an array element to a location.
2870 * Each active uniform, including individual structure members will appear
2871 * in this map. This roughly corresponds to the set of names that would be
2872 * enumerated by \c glGetActiveUniform.
2874 struct string_to_uint_map
*UniformHash
;
2876 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2878 bool IsES
; /**< True if this program uses GLSL ES */
2881 * Per-stage shaders resulting from the first stage of linking.
2883 * Set of linked shaders for this program. The array is accessed using the
2884 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2887 struct gl_linked_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2889 /* True if any of the fragment shaders attached to this program use:
2890 * #extension ARB_fragment_coord_conventions: enable
2892 GLboolean ARB_fragment_coord_conventions_enable
;
2896 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2897 #define GLSL_LOG 0x2 /**< Write shaders to files */
2898 #define GLSL_UNIFORMS 0x4 /**< Print glUniform calls */
2899 #define GLSL_NOP_VERT 0x8 /**< Force no-op vertex shaders */
2900 #define GLSL_NOP_FRAG 0x10 /**< Force no-op fragment shaders */
2901 #define GLSL_USE_PROG 0x20 /**< Log glUseProgram calls */
2902 #define GLSL_REPORT_ERRORS 0x40 /**< Print compilation errors */
2903 #define GLSL_DUMP_ON_ERROR 0x80 /**< Dump shaders to stderr on compile error */
2904 #define GLSL_CACHE_INFO 0x100 /**< Print debug information about shader cache */
2908 * Context state for GLSL vertex/fragment shaders.
2909 * Extended to support pipeline object
2911 struct gl_pipeline_object
2913 /** Name of the pipeline object as received from glGenProgramPipelines.
2914 * It would be 0 for shaders without separate shader objects.
2922 GLchar
*Label
; /**< GL_KHR_debug */
2925 * Programs used for rendering
2927 * There is a separate program set for each shader stage.
2929 struct gl_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2931 struct gl_shader_program
*ReferencedPrograms
[MESA_SHADER_STAGES
];
2933 struct gl_program
*_CurrentFragmentProgram
;
2936 * Program used by glUniform calls.
2938 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2940 struct gl_shader_program
*ActiveProgram
;
2942 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2944 GLboolean EverBound
; /**< Has the pipeline object been created */
2946 GLboolean Validated
; /**< Pipeline Validation status */
2952 * Context state for GLSL pipeline shaders.
2954 struct gl_pipeline_shader_state
2956 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2957 struct gl_pipeline_object
*Current
;
2959 /* Default Object to ensure that _Shader is never NULL */
2960 struct gl_pipeline_object
*Default
;
2962 /** Pipeline objects */
2963 struct _mesa_HashTable
*Objects
;
2967 * Compiler options for a single GLSL shaders type
2969 struct gl_shader_compiler_options
2971 /** Driver-selectable options: */
2972 GLboolean EmitNoLoops
;
2973 GLboolean EmitNoFunctions
;
2974 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2975 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2976 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2977 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2978 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
2979 * gl_CullDistance together from
2980 * float[8] to vec4[2]
2984 * \name Forms of indirect addressing the driver cannot do.
2987 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2988 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2989 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2990 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2991 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
2994 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2995 GLuint MaxUnrollIterations
;
2998 * Optimize code for array of structures backends.
3000 * This is a proxy for:
3001 * - preferring DP4 instructions (rather than MUL/MAD) for
3002 * matrix * vector operations, such as position transformation.
3004 GLboolean OptimizeForAOS
;
3006 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
3008 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
3009 GLboolean ClampBlockIndicesToArrayBounds
;
3011 const struct nir_shader_compiler_options
*NirOptions
;
3016 * Occlusion/timer query object.
3018 struct gl_query_object
3020 GLenum Target
; /**< The query target, when active */
3021 GLuint Id
; /**< hash table ID/name */
3022 GLchar
*Label
; /**< GL_KHR_debug */
3023 GLuint64EXT Result
; /**< the counter */
3024 GLboolean Active
; /**< inside Begin/EndQuery */
3025 GLboolean Ready
; /**< result is ready? */
3026 GLboolean EverBound
;/**< has query object ever been bound */
3027 GLuint Stream
; /**< The stream */
3032 * Context state for query objects.
3034 struct gl_query_state
3036 struct _mesa_HashTable
*QueryObjects
;
3037 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
3038 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
3040 /** GL_NV_conditional_render */
3041 struct gl_query_object
*CondRenderQuery
;
3043 /** GL_EXT_transform_feedback */
3044 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
3045 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
3047 /** GL_ARB_transform_feedback_overflow_query */
3048 struct gl_query_object
*TransformFeedbackOverflow
[MAX_VERTEX_STREAMS
];
3049 struct gl_query_object
*TransformFeedbackOverflowAny
;
3051 /** GL_ARB_timer_query */
3052 struct gl_query_object
*TimeElapsed
;
3054 /** GL_ARB_pipeline_statistics_query */
3055 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3057 GLenum CondRenderMode
;
3061 /** Sync object state */
3062 struct gl_sync_object
3064 GLenum Type
; /**< GL_SYNC_FENCE */
3065 GLuint Name
; /**< Fence name */
3066 GLchar
*Label
; /**< GL_KHR_debug */
3067 GLint RefCount
; /**< Reference count */
3068 GLboolean DeletePending
; /**< Object was deleted while there were still
3069 * live references (e.g., sync not yet finished)
3071 GLenum SyncCondition
;
3072 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3073 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3078 * State which can be shared by multiple contexts:
3080 struct gl_shared_state
3082 mtx_t Mutex
; /**< for thread safety */
3083 GLint RefCount
; /**< Reference count */
3084 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3085 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3086 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3088 /** Default texture objects (shared by all texture units) */
3089 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3091 /** Fallback texture used when a bound texture is incomplete */
3092 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3095 * \name Thread safety and statechange notification for texture
3098 * \todo Improve the granularity of locking.
3101 mtx_t TexMutex
; /**< texobj thread safety */
3102 GLuint TextureStateStamp
; /**< state notification for shared tex */
3105 /** Default buffer object for vertex arrays that aren't in VBOs */
3106 struct gl_buffer_object
*NullBufferObj
;
3109 * \name Vertex/geometry/fragment programs
3112 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3113 struct gl_program
*DefaultVertexProgram
;
3114 struct gl_program
*DefaultFragmentProgram
;
3117 /* GL_ATI_fragment_shader */
3118 struct _mesa_HashTable
*ATIShaders
;
3119 struct ati_fragment_shader
*DefaultFragmentShader
;
3121 struct _mesa_HashTable
*BufferObjects
;
3123 /** Table of both gl_shader and gl_shader_program objects */
3124 struct _mesa_HashTable
*ShaderObjects
;
3126 /* GL_EXT_framebuffer_object */
3127 struct _mesa_HashTable
*RenderBuffers
;
3128 struct _mesa_HashTable
*FrameBuffers
;
3131 struct set
*SyncObjects
;
3133 /** GL_ARB_sampler_objects */
3134 struct _mesa_HashTable
*SamplerObjects
;
3137 * Some context in this share group was affected by a GPU reset
3139 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3140 * been affected by a GPU reset must also return
3141 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3143 * Once this field becomes true, it is never reset to false.
3145 bool ShareGroupReset
;
3151 * Renderbuffers represent drawing surfaces such as color, depth and/or
3152 * stencil. A framebuffer object has a set of renderbuffers.
3153 * Drivers will typically derive subclasses of this type.
3155 struct gl_renderbuffer
3157 mtx_t Mutex
; /**< for thread safety */
3158 GLuint ClassID
; /**< Useful for drivers */
3160 GLchar
*Label
; /**< GL_KHR_debug */
3162 GLuint Width
, Height
;
3164 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3165 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3167 * True for renderbuffers that wrap textures, giving the driver a chance to
3168 * flush render caches through the FinishRenderTexture hook.
3170 * Drivers may also set this on renderbuffers other than those generated by
3171 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3172 * called without a rb->TexImage.
3174 GLboolean NeedsFinishRenderTexture
;
3176 GLenum InternalFormat
; /**< The user-specified format */
3177 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3178 GL_STENCIL_INDEX. */
3179 mesa_format Format
; /**< The actual renderbuffer memory format */
3181 * Pointer to the texture image if this renderbuffer wraps a texture,
3184 * Note that the reference on the gl_texture_object containing this
3185 * TexImage is held by the gl_renderbuffer_attachment.
3187 struct gl_texture_image
*TexImage
;
3189 /** Delete this renderbuffer */
3190 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3192 /** Allocate new storage for this renderbuffer */
3193 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3194 struct gl_renderbuffer
*rb
,
3195 GLenum internalFormat
,
3196 GLuint width
, GLuint height
);
3201 * A renderbuffer attachment points to either a texture object (and specifies
3202 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3204 struct gl_renderbuffer_attachment
3206 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3210 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3211 * application supplied renderbuffer object.
3213 struct gl_renderbuffer
*Renderbuffer
;
3216 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3217 * supplied texture object.
3219 struct gl_texture_object
*Texture
;
3220 GLuint TextureLevel
; /**< Attached mipmap level. */
3221 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3222 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3223 * and 2D array textures */
3229 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3230 * In C++ terms, think of this as a base class from which device drivers
3231 * will make derived classes.
3233 struct gl_framebuffer
3235 mtx_t Mutex
; /**< for thread safety */
3237 * If zero, this is a window system framebuffer. If non-zero, this
3238 * is a FBO framebuffer; note that for some devices (i.e. those with
3239 * a natural pixel coordinate system for FBOs that differs from the
3240 * OpenGL/Mesa coordinate system), this means that the viewport,
3241 * polygon face orientation, and polygon stipple will have to be inverted.
3246 GLchar
*Label
; /**< GL_KHR_debug */
3248 GLboolean DeletePending
;
3251 * The framebuffer's visual. Immutable if this is a window system buffer.
3252 * Computed from attachments if user-made FBO.
3254 struct gl_config Visual
;
3257 * Size of frame buffer in pixels. If there are no attachments, then both
3260 GLuint Width
, Height
;
3263 * In the case that the framebuffer has no attachment (i.e.
3264 * GL_ARB_framebuffer_no_attachments) then the geometry of
3265 * the framebuffer is specified by the default values.
3268 GLuint Width
, Height
, Layers
, NumSamples
;
3269 GLboolean FixedSampleLocations
;
3270 /* Derived from NumSamples by the driver so that it can choose a valid
3271 * value for the hardware.
3276 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3277 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3278 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3285 /** \name Derived Z buffer stuff */
3287 GLuint _DepthMax
; /**< Max depth buffer value */
3288 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3289 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3292 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3295 /** Whether one of Attachment has Type != GL_NONE
3296 * NOTE: the values for Width and Height are set to 0 in case of having
3297 * no attachments, a backend driver supporting the extension
3298 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3299 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3300 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3301 * _Ymax do NOT take into account _HasAttachments being false). To get the
3302 * geometry of the framebuffer, the helper functions
3303 * _mesa_geometric_width(),
3304 * _mesa_geometric_height(),
3305 * _mesa_geometric_samples() and
3306 * _mesa_geometric_layers()
3307 * are available that check _HasAttachments.
3309 bool _HasAttachments
;
3311 GLbitfield _IntegerBuffers
; /**< Which color buffers are integer valued */
3313 /* ARB_color_buffer_float */
3314 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3315 GLboolean _HasSNormOrFloatColorBuffer
;
3318 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3319 * is not layered. For cube maps and cube map arrays, each cube face
3320 * counts as a layer. As the case for Width, Height a backend driver
3321 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3322 * in the case that _HasAttachments is false
3324 GLuint MaxNumLayers
;
3326 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3327 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3329 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3330 * attribute group and GL_PIXEL attribute group, respectively.
3332 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3333 GLenum ColorReadBuffer
;
3335 /** Computed from ColorDraw/ReadBuffer above */
3336 GLuint _NumColorDrawBuffers
;
3337 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3338 GLint _ColorReadBufferIndex
; /* -1 = None */
3339 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3340 struct gl_renderbuffer
*_ColorReadBuffer
;
3342 /** Delete this framebuffer */
3343 void (*Delete
)(struct gl_framebuffer
*fb
);
3348 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3352 GLushort RangeMin
; /**< min value exponent */
3353 GLushort RangeMax
; /**< max value exponent */
3354 GLushort Precision
; /**< number of mantissa bits */
3359 * Limits for vertex, geometry and fragment programs/shaders.
3361 struct gl_program_constants
3363 /* logical limits */
3364 GLuint MaxInstructions
;
3365 GLuint MaxAluInstructions
;
3366 GLuint MaxTexInstructions
;
3367 GLuint MaxTexIndirections
;
3370 GLuint MaxAddressRegs
;
3371 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3372 GLuint MaxParameters
;
3373 GLuint MaxLocalParams
;
3374 GLuint MaxEnvParams
;
3375 /* native/hardware limits */
3376 GLuint MaxNativeInstructions
;
3377 GLuint MaxNativeAluInstructions
;
3378 GLuint MaxNativeTexInstructions
;
3379 GLuint MaxNativeTexIndirections
;
3380 GLuint MaxNativeAttribs
;
3381 GLuint MaxNativeTemps
;
3382 GLuint MaxNativeAddressRegs
;
3383 GLuint MaxNativeParameters
;
3385 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3388 * \name Per-stage input / output limits
3390 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3391 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3392 * ES). This is stored as \c gl_constants::MaxVarying.
3394 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3395 * variables. Each stage as a certain number of outputs that it can feed
3396 * to the next stage and a certain number inputs that it can consume from
3397 * the previous stage.
3399 * Vertex shader inputs do not participate this in this accounting.
3400 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3402 * Fragment shader outputs do not participate this in this accounting.
3403 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3406 GLuint MaxInputComponents
;
3407 GLuint MaxOutputComponents
;
3410 /* ES 2.0 and GL_ARB_ES2_compatibility */
3411 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3412 struct gl_precision LowInt
, MediumInt
, HighInt
;
3413 /* GL_ARB_uniform_buffer_object */
3414 GLuint MaxUniformBlocks
;
3415 GLuint MaxCombinedUniformComponents
;
3416 GLuint MaxTextureImageUnits
;
3418 /* GL_ARB_shader_atomic_counters */
3419 GLuint MaxAtomicBuffers
;
3420 GLuint MaxAtomicCounters
;
3422 /* GL_ARB_shader_image_load_store */
3423 GLuint MaxImageUniforms
;
3425 /* GL_ARB_shader_storage_buffer_object */
3426 GLuint MaxShaderStorageBlocks
;
3431 * Constants which may be overridden by device driver during context creation
3432 * but are never changed after that.
3436 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3437 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3438 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3439 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3440 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3441 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3442 GLuint MaxTextureCoordUnits
;
3443 GLuint MaxCombinedTextureImageUnits
;
3444 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3445 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3446 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3447 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3449 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3451 GLuint MaxArrayLockSize
;
3455 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3456 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3457 GLfloat PointSizeGranularity
;
3458 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3459 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3460 GLfloat LineWidthGranularity
;
3462 GLuint MaxClipPlanes
;
3464 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3465 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3467 GLuint MaxViewportWidth
, MaxViewportHeight
;
3468 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3469 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3473 } ViewportBounds
; /**< GL_ARB_viewport_array */
3474 GLuint MaxWindowRectangles
; /**< GL_EXT_window_rectangles */
3476 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3477 GLuint MaxProgramMatrices
;
3478 GLuint MaxProgramMatrixStackDepth
;
3481 GLuint SamplesPassed
;
3484 GLuint PrimitivesGenerated
;
3485 GLuint PrimitivesWritten
;
3486 GLuint VerticesSubmitted
;
3487 GLuint PrimitivesSubmitted
;
3488 GLuint VsInvocations
;
3490 GLuint TessInvocations
;
3491 GLuint GsInvocations
;
3492 GLuint GsPrimitives
;
3493 GLuint FsInvocations
;
3494 GLuint ComputeInvocations
;
3495 GLuint ClInPrimitives
;
3496 GLuint ClOutPrimitives
;
3499 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3501 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3502 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3503 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3506 * GL_ARB_framebuffer_no_attachments
3508 GLuint MaxFramebufferWidth
;
3509 GLuint MaxFramebufferHeight
;
3510 GLuint MaxFramebufferLayers
;
3511 GLuint MaxFramebufferSamples
;
3513 /** Number of varying vectors between any two shader stages. */
3517 * GL_ARB_uniform_buffer_object
3519 GLuint MaxCombinedUniformBlocks
;
3520 GLuint MaxUniformBufferBindings
;
3521 GLuint MaxUniformBlockSize
;
3522 GLuint UniformBufferOffsetAlignment
;
3526 * GL_ARB_shader_storage_buffer_object
3528 GLuint MaxCombinedShaderStorageBlocks
;
3529 GLuint MaxShaderStorageBufferBindings
;
3530 GLuint MaxShaderStorageBlockSize
;
3531 GLuint ShaderStorageBufferOffsetAlignment
;
3535 * GL_ARB_explicit_uniform_location
3537 GLuint MaxUserAssignableUniformLocations
;
3539 /** geometry shader */
3540 GLuint MaxGeometryOutputVertices
;
3541 GLuint MaxGeometryTotalOutputComponents
;
3543 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3546 * Changes default GLSL extension behavior from "error" to "warn". It's out
3547 * of spec, but it can make some apps work that otherwise wouldn't.
3549 GLboolean ForceGLSLExtensionsWarn
;
3552 * If non-zero, forces GLSL shaders to behave as if they began
3553 * with "#version ForceGLSLVersion".
3555 GLuint ForceGLSLVersion
;
3558 * Allow GLSL #extension directives in the middle of shaders.
3560 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3563 * Allow creating a higher compat profile (version 3.1+) for apps that
3564 * request it. Be careful when adding that driconf option because some
3565 * features are unimplemented and might not work correctly.
3567 GLboolean AllowHigherCompatVersion
;
3570 * Force computing the absolute value for sqrt() and inversesqrt() to follow
3571 * D3D9 when apps rely on this behaviour.
3573 GLboolean ForceGLSLAbsSqrt
;
3576 * Force uninitialized variables to default to zero.
3578 GLboolean GLSLZeroInit
;
3581 * Does the driver support real 32-bit integers? (Otherwise, integers are
3582 * simulated via floats.)
3584 GLboolean NativeIntegers
;
3587 * Does VertexID count from zero or from base vertex?
3590 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3591 * ignored and need not be set.
3593 bool VertexID_is_zero_based
;
3596 * If the driver supports real 32-bit integers, what integer value should be
3597 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3599 GLuint UniformBooleanTrue
;
3602 * Maximum amount of time, measured in nanseconds, that the server can wait.
3604 GLuint64 MaxServerWaitTimeout
;
3606 /** GL_EXT_provoking_vertex */
3607 GLboolean QuadsFollowProvokingVertexConvention
;
3609 /** GL_ARB_viewport_array */
3610 GLenum LayerAndVPIndexProvokingVertex
;
3612 /** OpenGL version 3.0 */
3613 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3615 /** OpenGL version 3.2 */
3616 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3618 /** OpenGL version 4.4 */
3619 GLuint MaxVertexAttribStride
;
3621 /** GL_EXT_transform_feedback */
3622 GLuint MaxTransformFeedbackBuffers
;
3623 GLuint MaxTransformFeedbackSeparateComponents
;
3624 GLuint MaxTransformFeedbackInterleavedComponents
;
3625 GLuint MaxVertexStreams
;
3627 /** GL_EXT_gpu_shader4 */
3628 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3630 /** GL_ARB_texture_gather */
3631 GLuint MinProgramTextureGatherOffset
;
3632 GLuint MaxProgramTextureGatherOffset
;
3633 GLuint MaxProgramTextureGatherComponents
;
3635 /* GL_ARB_robustness */
3636 GLenum ResetStrategy
;
3638 /* GL_KHR_robustness */
3639 GLboolean RobustAccess
;
3641 /* GL_ARB_blend_func_extended */
3642 GLuint MaxDualSourceDrawBuffers
;
3645 * Whether the implementation strips out and ignores texture borders.
3647 * Many GPU hardware implementations don't support rendering with texture
3648 * borders and mipmapped textures. (Note: not static border color, but the
3649 * old 1-pixel border around each edge). Implementations then have to do
3650 * slow fallbacks to be correct, or just ignore the border and be fast but
3651 * wrong. Setting the flag strips the border off of TexImage calls,
3652 * providing "fast but wrong" at significantly reduced driver complexity.
3654 * Texture borders are deprecated in GL 3.0.
3656 GLboolean StripTextureBorder
;
3659 * For drivers which can do a better job at eliminating unused uniforms
3660 * than the GLSL compiler.
3662 * XXX Remove these as soon as a better solution is available.
3664 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3666 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3667 bool GLSLFragCoordIsSysVal
;
3668 bool GLSLFrontFacingIsSysVal
;
3671 * Run the minimum amount of GLSL optimizations to be able to link
3672 * shaders optimally (eliminate dead varyings and uniforms) and just do
3673 * all the necessary lowering.
3675 bool GLSLOptimizeConservatively
;
3678 * True if gl_TessLevelInner/Outer[] in the TES should be inputs
3679 * (otherwise, they're system values).
3681 bool GLSLTessLevelsAsInputs
;
3684 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3685 * than passing the transform feedback object to the drawing function.
3687 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3689 /** GL_ARB_map_buffer_alignment */
3690 GLuint MinMapBufferAlignment
;
3693 * Disable varying packing. This is out of spec, but potentially useful
3694 * for older platforms that supports a limited number of texture
3695 * indirections--on these platforms, unpacking the varyings in the fragment
3696 * shader increases the number of texture indirections by 1, which might
3697 * make some shaders not executable at all.
3699 * Drivers that support transform feedback must set this value to GL_FALSE.
3701 GLboolean DisableVaryingPacking
;
3704 * Should meaningful names be generated for compiler temporary variables?
3706 * Generally, it is not useful to have the compiler generate "meaningful"
3707 * names for temporary variables that it creates. This can, however, be a
3708 * useful debugging aid. In Mesa debug builds or release builds when
3709 * MESA_GLSL is set at run-time, meaningful names will be generated.
3710 * Drivers can also force names to be generated by setting this field.
3711 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3712 * vertex shader assembly) is set at run-time.
3714 bool GenerateTemporaryNames
;
3717 * Maximum value supported for an index in DrawElements and friends.
3719 * This must be at least (1ull<<24)-1. The default value is
3722 * \since ES 3.0 or GL_ARB_ES3_compatibility
3723 * \sa _mesa_init_constants
3725 GLuint64 MaxElementIndex
;
3728 * Disable interpretation of line continuations (lines ending with a
3729 * backslash character ('\') in GLSL source.
3731 GLboolean DisableGLSLLineContinuations
;
3733 /** GL_ARB_texture_multisample */
3734 GLint MaxColorTextureSamples
;
3735 GLint MaxDepthTextureSamples
;
3736 GLint MaxIntegerSamples
;
3739 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3740 * samples are laid out in a rectangular grid roughly corresponding to
3741 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3742 * are used to map indices of rectangular grid to sample numbers within
3743 * a pixel. This mapping of indices to sample numbers must be initialized
3744 * by the driver for the target hardware. For example, if we have the 8X
3745 * MSAA sample number layout (sample positions) for XYZ hardware:
3747 * sample indices layout sample number layout
3748 * --------- ---------
3749 * | 0 | 1 | | a | b |
3750 * --------- ---------
3751 * | 2 | 3 | | c | d |
3752 * --------- ---------
3753 * | 4 | 5 | | e | f |
3754 * --------- ---------
3755 * | 6 | 7 | | g | h |
3756 * --------- ---------
3758 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3760 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3762 * SampleMap8x = {a, b, c, d, e, f, g, h};
3764 * Follow the logic for sample counts 2-8.
3766 * For 16x the sample indices layout as a 4x4 grid as follows:
3778 uint8_t SampleMap2x
[2];
3779 uint8_t SampleMap4x
[4];
3780 uint8_t SampleMap8x
[8];
3781 uint8_t SampleMap16x
[16];
3783 /** GL_ARB_shader_atomic_counters */
3784 GLuint MaxAtomicBufferBindings
;
3785 GLuint MaxAtomicBufferSize
;
3786 GLuint MaxCombinedAtomicBuffers
;
3787 GLuint MaxCombinedAtomicCounters
;
3789 /** GL_ARB_vertex_attrib_binding */
3790 GLint MaxVertexAttribRelativeOffset
;
3791 GLint MaxVertexAttribBindings
;
3793 /* GL_ARB_shader_image_load_store */
3794 GLuint MaxImageUnits
;
3795 GLuint MaxCombinedShaderOutputResources
;
3796 GLuint MaxImageSamples
;
3797 GLuint MaxCombinedImageUniforms
;
3799 /** GL_ARB_compute_shader */
3800 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3801 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3802 GLuint MaxComputeWorkGroupInvocations
;
3803 GLuint MaxComputeSharedMemorySize
;
3805 /** GL_ARB_compute_variable_group_size */
3806 GLuint MaxComputeVariableGroupSize
[3]; /* Array of x, y, z dimensions */
3807 GLuint MaxComputeVariableGroupInvocations
;
3809 /** GL_ARB_gpu_shader5 */
3810 GLfloat MinFragmentInterpolationOffset
;
3811 GLfloat MaxFragmentInterpolationOffset
;
3813 GLboolean FakeSWMSAA
;
3815 /** GL_KHR_context_flush_control */
3816 GLenum ContextReleaseBehavior
;
3818 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3820 /** GL_ARB_tessellation_shader */
3821 GLuint MaxPatchVertices
;
3822 GLuint MaxTessGenLevel
;
3823 GLuint MaxTessPatchComponents
;
3824 GLuint MaxTessControlTotalOutputComponents
;
3825 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3826 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3827 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3828 bool PrimitiveRestartForPatches
;
3829 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3830 * gl_LocalInvocationIndex based on
3831 * other builtin variables. */
3833 /** GL_OES_primitive_bounding_box */
3834 bool NoPrimitiveBoundingBoxOutput
;
3836 /** GL_ARB_sparse_buffer */
3837 GLuint SparseBufferPageSize
;
3839 /** Used as an input for sha1 generation in the on-disk shader cache */
3840 unsigned char *dri_config_options_sha1
;
3845 * Enable flag for each OpenGL extension. Different device drivers will
3846 * enable different extensions at runtime.
3848 struct gl_extensions
3850 GLboolean dummy
; /* don't remove this! */
3851 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3852 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3853 GLboolean ANGLE_texture_compression_dxt
;
3854 GLboolean ARB_ES2_compatibility
;
3855 GLboolean ARB_ES3_compatibility
;
3856 GLboolean ARB_ES3_1_compatibility
;
3857 GLboolean ARB_ES3_2_compatibility
;
3858 GLboolean ARB_arrays_of_arrays
;
3859 GLboolean ARB_base_instance
;
3860 GLboolean ARB_blend_func_extended
;
3861 GLboolean ARB_buffer_storage
;
3862 GLboolean ARB_clear_texture
;
3863 GLboolean ARB_clip_control
;
3864 GLboolean ARB_color_buffer_float
;
3865 GLboolean ARB_compute_shader
;
3866 GLboolean ARB_compute_variable_group_size
;
3867 GLboolean ARB_conditional_render_inverted
;
3868 GLboolean ARB_conservative_depth
;
3869 GLboolean ARB_copy_image
;
3870 GLboolean ARB_cull_distance
;
3871 GLboolean ARB_depth_buffer_float
;
3872 GLboolean ARB_depth_clamp
;
3873 GLboolean ARB_depth_texture
;
3874 GLboolean ARB_derivative_control
;
3875 GLboolean ARB_draw_buffers_blend
;
3876 GLboolean ARB_draw_elements_base_vertex
;
3877 GLboolean ARB_draw_indirect
;
3878 GLboolean ARB_draw_instanced
;
3879 GLboolean ARB_fragment_coord_conventions
;
3880 GLboolean ARB_fragment_layer_viewport
;
3881 GLboolean ARB_fragment_program
;
3882 GLboolean ARB_fragment_program_shadow
;
3883 GLboolean ARB_fragment_shader
;
3884 GLboolean ARB_framebuffer_no_attachments
;
3885 GLboolean ARB_framebuffer_object
;
3886 GLboolean ARB_enhanced_layouts
;
3887 GLboolean ARB_explicit_attrib_location
;
3888 GLboolean ARB_explicit_uniform_location
;
3889 GLboolean ARB_gpu_shader5
;
3890 GLboolean ARB_gpu_shader_fp64
;
3891 GLboolean ARB_gpu_shader_int64
;
3892 GLboolean ARB_half_float_vertex
;
3893 GLboolean ARB_indirect_parameters
;
3894 GLboolean ARB_instanced_arrays
;
3895 GLboolean ARB_internalformat_query
;
3896 GLboolean ARB_internalformat_query2
;
3897 GLboolean ARB_map_buffer_range
;
3898 GLboolean ARB_occlusion_query
;
3899 GLboolean ARB_occlusion_query2
;
3900 GLboolean ARB_pipeline_statistics_query
;
3901 GLboolean ARB_point_sprite
;
3902 GLboolean ARB_post_depth_coverage
;
3903 GLboolean ARB_query_buffer_object
;
3904 GLboolean ARB_robust_buffer_access_behavior
;
3905 GLboolean ARB_sample_shading
;
3906 GLboolean ARB_seamless_cube_map
;
3907 GLboolean ARB_shader_atomic_counter_ops
;
3908 GLboolean ARB_shader_atomic_counters
;
3909 GLboolean ARB_shader_ballot
;
3910 GLboolean ARB_shader_bit_encoding
;
3911 GLboolean ARB_shader_clock
;
3912 GLboolean ARB_shader_draw_parameters
;
3913 GLboolean ARB_shader_group_vote
;
3914 GLboolean ARB_shader_image_load_store
;
3915 GLboolean ARB_shader_image_size
;
3916 GLboolean ARB_shader_precision
;
3917 GLboolean ARB_shader_stencil_export
;
3918 GLboolean ARB_shader_storage_buffer_object
;
3919 GLboolean ARB_shader_subroutine
;
3920 GLboolean ARB_shader_texture_image_samples
;
3921 GLboolean ARB_shader_texture_lod
;
3922 GLboolean ARB_shader_viewport_layer_array
;
3923 GLboolean ARB_shading_language_packing
;
3924 GLboolean ARB_shading_language_420pack
;
3925 GLboolean ARB_shadow
;
3926 GLboolean ARB_sparse_buffer
;
3927 GLboolean ARB_stencil_texturing
;
3929 GLboolean ARB_tessellation_shader
;
3930 GLboolean ARB_texture_border_clamp
;
3931 GLboolean ARB_texture_buffer_object
;
3932 GLboolean ARB_texture_buffer_object_rgb32
;
3933 GLboolean ARB_texture_buffer_range
;
3934 GLboolean ARB_texture_compression_bptc
;
3935 GLboolean ARB_texture_compression_rgtc
;
3936 GLboolean ARB_texture_cube_map
;
3937 GLboolean ARB_texture_cube_map_array
;
3938 GLboolean ARB_texture_env_combine
;
3939 GLboolean ARB_texture_env_crossbar
;
3940 GLboolean ARB_texture_env_dot3
;
3941 GLboolean ARB_texture_float
;
3942 GLboolean ARB_texture_gather
;
3943 GLboolean ARB_texture_mirror_clamp_to_edge
;
3944 GLboolean ARB_texture_multisample
;
3945 GLboolean ARB_texture_non_power_of_two
;
3946 GLboolean ARB_texture_stencil8
;
3947 GLboolean ARB_texture_query_levels
;
3948 GLboolean ARB_texture_query_lod
;
3949 GLboolean ARB_texture_rg
;
3950 GLboolean ARB_texture_rgb10_a2ui
;
3951 GLboolean ARB_texture_view
;
3952 GLboolean ARB_timer_query
;
3953 GLboolean ARB_transform_feedback2
;
3954 GLboolean ARB_transform_feedback3
;
3955 GLboolean ARB_transform_feedback_instanced
;
3956 GLboolean ARB_transform_feedback_overflow_query
;
3957 GLboolean ARB_uniform_buffer_object
;
3958 GLboolean ARB_vertex_attrib_64bit
;
3959 GLboolean ARB_vertex_program
;
3960 GLboolean ARB_vertex_shader
;
3961 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3962 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3963 GLboolean ARB_viewport_array
;
3964 GLboolean EXT_blend_color
;
3965 GLboolean EXT_blend_equation_separate
;
3966 GLboolean EXT_blend_func_separate
;
3967 GLboolean EXT_blend_minmax
;
3968 GLboolean EXT_depth_bounds_test
;
3969 GLboolean EXT_draw_buffers2
;
3970 GLboolean EXT_framebuffer_multisample
;
3971 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3972 GLboolean EXT_framebuffer_sRGB
;
3973 GLboolean EXT_gpu_program_parameters
;
3974 GLboolean EXT_gpu_shader4
;
3975 GLboolean EXT_packed_float
;
3976 GLboolean EXT_pixel_buffer_object
;
3977 GLboolean EXT_point_parameters
;
3978 GLboolean EXT_polygon_offset_clamp
;
3979 GLboolean EXT_provoking_vertex
;
3980 GLboolean EXT_shader_integer_mix
;
3981 GLboolean EXT_shader_samples_identical
;
3982 GLboolean EXT_stencil_two_side
;
3983 GLboolean EXT_texture_array
;
3984 GLboolean EXT_texture_compression_latc
;
3985 GLboolean EXT_texture_compression_s3tc
;
3986 GLboolean EXT_texture_env_dot3
;
3987 GLboolean EXT_texture_filter_anisotropic
;
3988 GLboolean EXT_texture_integer
;
3989 GLboolean EXT_texture_mirror_clamp
;
3990 GLboolean EXT_texture_shared_exponent
;
3991 GLboolean EXT_texture_snorm
;
3992 GLboolean EXT_texture_sRGB
;
3993 GLboolean EXT_texture_sRGB_decode
;
3994 GLboolean EXT_texture_swizzle
;
3995 GLboolean EXT_transform_feedback
;
3996 GLboolean EXT_timer_query
;
3997 GLboolean EXT_vertex_array_bgra
;
3998 GLboolean EXT_window_rectangles
;
3999 GLboolean OES_copy_image
;
4000 GLboolean OES_primitive_bounding_box
;
4001 GLboolean OES_sample_variables
;
4002 GLboolean OES_standard_derivatives
;
4003 GLboolean OES_texture_buffer
;
4004 GLboolean OES_texture_cube_map_array
;
4005 GLboolean OES_viewport_array
;
4006 /* vendor extensions */
4007 GLboolean AMD_performance_monitor
;
4008 GLboolean AMD_pinned_memory
;
4009 GLboolean AMD_seamless_cubemap_per_texture
;
4010 GLboolean AMD_vertex_shader_layer
;
4011 GLboolean AMD_vertex_shader_viewport_index
;
4012 GLboolean ANDROID_extension_pack_es31a
;
4013 GLboolean APPLE_object_purgeable
;
4014 GLboolean ATI_meminfo
;
4015 GLboolean ATI_texture_compression_3dc
;
4016 GLboolean ATI_texture_mirror_once
;
4017 GLboolean ATI_texture_env_combine3
;
4018 GLboolean ATI_fragment_shader
;
4019 GLboolean ATI_separate_stencil
;
4020 GLboolean GREMEDY_string_marker
;
4021 GLboolean INTEL_conservative_rasterization
;
4022 GLboolean INTEL_performance_query
;
4023 GLboolean KHR_blend_equation_advanced
;
4024 GLboolean KHR_blend_equation_advanced_coherent
;
4025 GLboolean KHR_robustness
;
4026 GLboolean KHR_texture_compression_astc_hdr
;
4027 GLboolean KHR_texture_compression_astc_ldr
;
4028 GLboolean KHR_texture_compression_astc_sliced_3d
;
4029 GLboolean MESA_pack_invert
;
4030 GLboolean MESA_shader_framebuffer_fetch
;
4031 GLboolean MESA_shader_framebuffer_fetch_non_coherent
;
4032 GLboolean MESA_shader_integer_functions
;
4033 GLboolean MESA_ycbcr_texture
;
4034 GLboolean NV_conditional_render
;
4035 GLboolean NV_fill_rectangle
;
4036 GLboolean NV_fog_distance
;
4037 GLboolean NV_point_sprite
;
4038 GLboolean NV_primitive_restart
;
4039 GLboolean NV_texture_barrier
;
4040 GLboolean NV_texture_env_combine4
;
4041 GLboolean NV_texture_rectangle
;
4042 GLboolean NV_vdpau_interop
;
4043 GLboolean NVX_gpu_memory_info
;
4044 GLboolean TDFX_texture_compression_FXT1
;
4045 GLboolean OES_EGL_image
;
4046 GLboolean OES_draw_texture
;
4047 GLboolean OES_depth_texture_cube_map
;
4048 GLboolean OES_EGL_image_external
;
4049 GLboolean OES_texture_float
;
4050 GLboolean OES_texture_float_linear
;
4051 GLboolean OES_texture_half_float
;
4052 GLboolean OES_texture_half_float_linear
;
4053 GLboolean OES_compressed_ETC1_RGB8_texture
;
4054 GLboolean OES_geometry_shader
;
4055 GLboolean OES_texture_compression_astc
;
4056 GLboolean extension_sentinel
;
4057 /** The extension string */
4058 const GLubyte
*String
;
4059 /** Number of supported extensions */
4062 * The context version which extension helper functions compare against.
4063 * By default, the value is equal to ctx->Version. This changes to ~0
4064 * while meta is in progress.
4071 * A stack of matrices (projection, modelview, color, texture, etc).
4073 struct gl_matrix_stack
4075 GLmatrix
*Top
; /**< points into Stack */
4076 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
4077 unsigned StackSize
; /**< Number of elements in Stack */
4078 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
4079 GLuint MaxDepth
; /**< size of Stack[] array */
4080 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
4085 * \name Bits for image transfer operations
4086 * \sa __struct gl_contextRec::ImageTransferState.
4089 #define IMAGE_SCALE_BIAS_BIT 0x1
4090 #define IMAGE_SHIFT_OFFSET_BIT 0x2
4091 #define IMAGE_MAP_COLOR_BIT 0x4
4092 #define IMAGE_CLAMP_BIT 0x800
4095 /** Pixel Transfer ops */
4096 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4097 IMAGE_SHIFT_OFFSET_BIT | \
4098 IMAGE_MAP_COLOR_BIT)
4101 * \name Bits to indicate what state has changed.
4104 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4105 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4106 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4107 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4108 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4109 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4110 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4111 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4112 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4113 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4114 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4115 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4116 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4117 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4118 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4119 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4120 #define _NEW_TEXTURE_OBJECT (1u << 16) /**< gl_context::Texture (bindings only) */
4121 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4122 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4123 #define _NEW_TEXTURE_STATE (1u << 19) /**< gl_context::Texture (states only) */
4124 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4125 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4126 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4127 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4128 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4129 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4130 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4131 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4132 #define _NEW_BUFFER_OBJECT (1u << 28)
4133 #define _NEW_FRAG_CLAMP (1u << 29)
4134 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4135 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4141 * Composite state flags
4144 #define _NEW_TEXTURE (_NEW_TEXTURE_OBJECT | _NEW_TEXTURE_STATE)
4146 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4147 _NEW_TEXTURE_STATE | \
4152 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4162 /* This has to be included here. */
4167 * Display list flags.
4168 * Strictly this is a tnl-private concept, but it doesn't seem
4169 * worthwhile adding a tnl private structure just to hold this one bit
4172 #define DLIST_DANGLING_REFS 0x1
4175 /** Opaque declaration of display list payload data type */
4176 union gl_dlist_node
;
4180 * Provide a location where information about a display list can be
4181 * collected. Could be extended with driverPrivate structures,
4182 * etc. in the future.
4184 struct gl_display_list
4187 GLchar
*Label
; /**< GL_KHR_debug */
4188 GLbitfield Flags
; /**< DLIST_x flags */
4189 /** The dlist commands are in a linked list of nodes */
4190 union gl_dlist_node
*Head
;
4195 * State used during display list compilation and execution.
4197 struct gl_dlist_state
4199 GLuint CallDepth
; /**< Current recursion calling depth */
4201 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4202 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4203 GLuint CurrentPos
; /**< Index into current block of nodes */
4205 GLvertexformat ListVtxfmt
;
4207 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4208 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4210 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4211 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4214 /* State known to have been set by the currently-compiling display
4215 * list. Used to eliminate some redundant state changes.
4223 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4224 * to small enums suitable for use as an array index.
4227 enum mesa_debug_source
{
4228 MESA_DEBUG_SOURCE_API
,
4229 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4230 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4231 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4232 MESA_DEBUG_SOURCE_APPLICATION
,
4233 MESA_DEBUG_SOURCE_OTHER
,
4234 MESA_DEBUG_SOURCE_COUNT
4237 enum mesa_debug_type
{
4238 MESA_DEBUG_TYPE_ERROR
,
4239 MESA_DEBUG_TYPE_DEPRECATED
,
4240 MESA_DEBUG_TYPE_UNDEFINED
,
4241 MESA_DEBUG_TYPE_PORTABILITY
,
4242 MESA_DEBUG_TYPE_PERFORMANCE
,
4243 MESA_DEBUG_TYPE_OTHER
,
4244 MESA_DEBUG_TYPE_MARKER
,
4245 MESA_DEBUG_TYPE_PUSH_GROUP
,
4246 MESA_DEBUG_TYPE_POP_GROUP
,
4247 MESA_DEBUG_TYPE_COUNT
4250 enum mesa_debug_severity
{
4251 MESA_DEBUG_SEVERITY_LOW
,
4252 MESA_DEBUG_SEVERITY_MEDIUM
,
4253 MESA_DEBUG_SEVERITY_HIGH
,
4254 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4255 MESA_DEBUG_SEVERITY_COUNT
4261 * Driver-specific state flags.
4263 * These are or'd with gl_context::NewDriverState to notify a driver about
4264 * a state change. The driver sets the flags at context creation and
4265 * the meaning of the bits set is opaque to core Mesa.
4267 struct gl_driver_flags
4269 /** gl_context::Array::_DrawArrays (vertex array state) */
4272 /** gl_context::TransformFeedback::CurrentObject */
4273 uint64_t NewTransformFeedback
;
4275 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4276 uint64_t NewTransformFeedbackProg
;
4278 /** gl_context::RasterDiscard */
4279 uint64_t NewRasterizerDiscard
;
4282 * gl_context::UniformBufferBindings
4283 * gl_shader_program::UniformBlocks
4285 uint64_t NewUniformBuffer
;
4288 * gl_context::ShaderStorageBufferBindings
4289 * gl_shader_program::ShaderStorageBlocks
4291 uint64_t NewShaderStorageBuffer
;
4293 uint64_t NewTextureBuffer
;
4296 * gl_context::AtomicBufferBindings
4298 uint64_t NewAtomicBuffer
;
4301 * gl_context::ImageUnits
4303 uint64_t NewImageUnits
;
4306 * gl_context::TessCtrlProgram::patch_default_*
4308 uint64_t NewDefaultTessLevels
;
4311 * gl_context::IntelConservativeRasterization
4313 uint64_t NewIntelConservativeRasterization
;
4316 struct gl_uniform_buffer_binding
4318 struct gl_buffer_object
*BufferObject
;
4319 /** Start of uniform block data in the buffer */
4321 /** Size of data allowed to be referenced from the buffer (in bytes) */
4324 * glBindBufferBase() indicates that the Size should be ignored and only
4325 * limited by the current size of the BufferObject.
4327 GLboolean AutomaticSize
;
4330 struct gl_shader_storage_buffer_binding
4332 struct gl_buffer_object
*BufferObject
;
4333 /** Start of shader storage block data in the buffer */
4335 /** Size of data allowed to be referenced from the buffer (in bytes) */
4338 * glBindBufferBase() indicates that the Size should be ignored and only
4339 * limited by the current size of the BufferObject.
4341 GLboolean AutomaticSize
;
4345 * ARB_shader_image_load_store image unit.
4347 struct gl_image_unit
4350 * Texture object bound to this unit.
4352 struct gl_texture_object
*TexObj
;
4355 * Level of the texture object bound to this unit.
4360 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4361 * GL_FALSE if only some specific layer of the texture is bound.
4367 * Layer of the texture object bound to this unit as specified by the
4373 * Layer of the texture object bound to this unit, or zero if the
4374 * whole level is bound.
4379 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4380 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4385 * GL internal format that determines the interpretation of the
4386 * image memory when shader image operations are performed through
4392 * Mesa format corresponding to \c Format.
4394 mesa_format _ActualFormat
;
4399 * Binding point for an atomic counter buffer object.
4401 struct gl_atomic_buffer_binding
4403 struct gl_buffer_object
*BufferObject
;
4409 * Shader subroutines storage
4411 struct gl_subroutine_index_binding
4418 * Mesa rendering context.
4420 * This is the central context data structure for Mesa. Almost all
4421 * OpenGL state is contained in this structure.
4422 * Think of this as a base class from which device drivers will derive
4427 /** State possibly shared with other contexts in the address space */
4428 struct gl_shared_state
*Shared
;
4430 /** \name API function pointer tables */
4435 * The current dispatch table for non-displaylist-saving execution, either
4436 * BeginEnd or OutsideBeginEnd
4438 struct _glapi_table
*Exec
;
4440 * The normal dispatch table for non-displaylist-saving, non-begin/end
4442 struct _glapi_table
*OutsideBeginEnd
;
4443 /** The dispatch table used between glNewList() and glEndList() */
4444 struct _glapi_table
*Save
;
4446 * The dispatch table used between glBegin() and glEnd() (outside of a
4447 * display list). Only valid functions between those two are set, which is
4448 * mostly just the set in a GLvertexformat struct.
4450 struct _glapi_table
*BeginEnd
;
4452 * Dispatch table for when a graphics reset has happened.
4454 struct _glapi_table
*ContextLost
;
4456 * Dispatch table used to marshal API calls from the client program to a
4457 * separate server thread. NULL if API calls are not being marshalled to
4460 struct _glapi_table
*MarshalExec
;
4462 * Dispatch table currently in use for fielding API calls from the client
4463 * program. If API calls are being marshalled to another thread, this ==
4464 * MarshalExec. Otherwise it == CurrentServerDispatch.
4466 struct _glapi_table
*CurrentClientDispatch
;
4469 * Dispatch table currently in use for performing API calls. == Save or
4472 struct _glapi_table
*CurrentServerDispatch
;
4476 struct glthread_state
*GLThread
;
4478 struct gl_config Visual
;
4479 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4480 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4481 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4482 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4485 * Device driver function pointer table
4487 struct dd_function_table Driver
;
4489 /** Core/Driver constants */
4490 struct gl_constants Const
;
4492 /** \name The various 4x4 matrix stacks */
4494 struct gl_matrix_stack ModelviewMatrixStack
;
4495 struct gl_matrix_stack ProjectionMatrixStack
;
4496 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4497 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4498 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4501 /** Combined modelview and projection matrix */
4502 GLmatrix _ModelProjectMatrix
;
4504 /** \name Display lists */
4505 struct gl_dlist_state ListState
;
4507 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4508 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4510 /** Extension information */
4511 struct gl_extensions Extensions
;
4513 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4515 char *VersionString
;
4517 /** \name State attribute stack (for glPush/PopAttrib) */
4519 GLuint AttribStackDepth
;
4520 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4523 /** \name Renderer attribute groups
4525 * We define a struct for each attribute group to make pushing and popping
4526 * attributes easy. Also it's a good organization.
4529 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4530 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4531 struct gl_current_attrib Current
; /**< Current attributes */
4532 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4533 struct gl_eval_attrib Eval
; /**< Eval attributes */
4534 struct gl_fog_attrib Fog
; /**< Fog attributes */
4535 struct gl_hint_attrib Hint
; /**< Hint attributes */
4536 struct gl_light_attrib Light
; /**< Light attributes */
4537 struct gl_line_attrib Line
; /**< Line attributes */
4538 struct gl_list_attrib List
; /**< List attributes */
4539 struct gl_multisample_attrib Multisample
;
4540 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4541 struct gl_point_attrib Point
; /**< Point attributes */
4542 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4543 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4544 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4545 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4546 struct gl_texture_attrib Texture
; /**< Texture attributes */
4547 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4548 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4551 /** \name Client attribute stack */
4553 GLuint ClientAttribStackDepth
;
4554 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4557 /** \name Client attribute groups */
4559 struct gl_array_attrib Array
; /**< Vertex arrays */
4560 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4561 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4562 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4565 /** \name Other assorted state (not pushed/popped on attribute stack) */
4567 struct gl_pixelmaps PixelMaps
;
4569 struct gl_evaluators EvalMap
; /**< All evaluators */
4570 struct gl_feedback Feedback
; /**< Feedback */
4571 struct gl_selection Select
; /**< Selection */
4573 struct gl_program_state Program
; /**< general program state */
4574 struct gl_vertex_program_state VertexProgram
;
4575 struct gl_fragment_program_state FragmentProgram
;
4576 struct gl_geometry_program_state GeometryProgram
;
4577 struct gl_compute_program_state ComputeProgram
;
4578 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4579 struct gl_tess_eval_program_state TessEvalProgram
;
4580 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4582 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4583 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4586 * Current active shader pipeline state
4588 * Almost all internal users want ::_Shader instead of ::Shader. The
4589 * exceptions are bits of legacy GLSL API that do not know about separate
4592 * If a program is active via \c glUseProgram, this will point to
4595 * If a program pipeline is active via \c glBindProgramPipeline, this will
4596 * point to \c ::Pipeline.Current.
4598 * If neither a program nor a program pipeline is active, this will point to
4599 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4602 struct gl_pipeline_object
*_Shader
;
4604 struct gl_query_state Query
; /**< occlusion, timer queries */
4606 struct gl_transform_feedback_state TransformFeedback
;
4608 struct gl_perf_monitor_state PerfMonitor
;
4609 struct gl_perf_query_state PerfQuery
;
4611 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4612 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4613 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4615 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4616 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4618 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4621 * Current GL_ARB_uniform_buffer_object binding referenced by
4622 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4624 struct gl_buffer_object
*UniformBuffer
;
4627 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4628 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4630 struct gl_buffer_object
*ShaderStorageBuffer
;
4633 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4634 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4635 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4638 struct gl_uniform_buffer_binding
4639 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4642 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4643 * and GL 4.3. This is set up using glBindBufferRange() or
4644 * glBindBufferBase(). They are associated with shader storage blocks by
4645 * glShaderStorageBlockBinding()'s state in the shader program.
4647 struct gl_shader_storage_buffer_binding
4648 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4651 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4654 struct gl_buffer_object
*AtomicBuffer
;
4657 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4660 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4663 * Array of atomic counter buffer binding points.
4665 struct gl_atomic_buffer_binding
4666 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4669 * Array of image units for ARB_shader_image_load_store.
4671 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4673 struct gl_subroutine_index_binding SubroutineIndex
[MESA_SHADER_STAGES
];
4676 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4678 /* GL_EXT_framebuffer_object */
4679 struct gl_renderbuffer
*CurrentRenderbuffer
;
4681 GLenum ErrorValue
; /**< Last error code */
4684 * Recognize and silence repeated error debug messages in buggy apps.
4686 const char *ErrorDebugFmtString
;
4687 GLuint ErrorDebugCount
;
4689 /* GL_ARB_debug_output/GL_KHR_debug */
4691 struct gl_debug_state
*Debug
;
4693 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4694 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4695 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4697 struct gl_driver_flags DriverFlags
;
4699 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4701 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4703 /** \name Derived state */
4704 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4705 GLfloat _EyeZDir
[3];
4706 GLfloat _ModelViewInvScale
;
4707 GLboolean _NeedEyeCoords
;
4708 GLboolean _ForceEyeCoords
;
4710 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4712 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4714 /** \name For debugging/development only */
4716 GLboolean FirstTimeCurrent
;
4720 * False if this context was created without a config. This is needed
4721 * because the initial state of glDrawBuffers depends on this
4723 GLboolean HasConfig
;
4725 /** software compression/decompression supported or not */
4726 GLboolean Mesa_DXTn
;
4728 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4730 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4731 GLboolean IntelConservativeRasterization
; /**< GL_INTEL_CONSERVATIVE_RASTERIZATION */
4734 * \name Hooks for module contexts.
4736 * These will eventually live in the driver or elsewhere.
4739 void *swrast_context
;
4740 void *swsetup_context
;
4741 void *swtnl_context
;
4742 struct vbo_context
*vbo_context
;
4743 struct st_context
*st
;
4748 * \name NV_vdpau_interop
4751 const void *vdpDevice
;
4752 const void *vdpGetProcAddress
;
4753 struct set
*vdpSurfaces
;
4757 * Has this context observed a GPU reset in any context in the share group?
4759 * Once this field becomes true, it is never reset to false.
4761 GLboolean ShareGroupReset
;
4764 * \name OES_primitive_bounding_box
4766 * Stores the arguments to glPrimitiveBoundingBox
4768 GLfloat PrimitiveBoundingBox
[8];
4770 struct disk_cache
*Cache
;
4774 * Information about memory usage. All sizes are in kilobytes.
4776 struct gl_memory_info
4778 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4779 unsigned avail_device_memory
; /**< free device memory at the moment */
4780 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4781 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4782 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4783 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4787 extern int MESA_VERBOSE
;
4788 extern int MESA_DEBUG_FLAGS
;
4789 # define MESA_FUNCTION __func__
4791 # define MESA_VERBOSE 0
4792 # define MESA_DEBUG_FLAGS 0
4793 # define MESA_FUNCTION "a function"
4797 /** The MESA_VERBOSE var is a bitmask of these flags */
4800 VERBOSE_VARRAY
= 0x0001,
4801 VERBOSE_TEXTURE
= 0x0002,
4802 VERBOSE_MATERIAL
= 0x0004,
4803 VERBOSE_PIPELINE
= 0x0008,
4804 VERBOSE_DRIVER
= 0x0010,
4805 VERBOSE_STATE
= 0x0020,
4806 VERBOSE_API
= 0x0040,
4807 VERBOSE_DISPLAY_LIST
= 0x0100,
4808 VERBOSE_LIGHTING
= 0x0200,
4809 VERBOSE_PRIMS
= 0x0400,
4810 VERBOSE_VERTS
= 0x0800,
4811 VERBOSE_DISASSEM
= 0x1000,
4812 VERBOSE_DRAW
= 0x2000,
4813 VERBOSE_SWAPBUFFERS
= 0x4000
4817 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4820 DEBUG_SILENT
= (1 << 0),
4821 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4822 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4823 DEBUG_INCOMPLETE_FBO
= (1 << 3),
4824 DEBUG_CONTEXT
= (1 << 4)
4831 #endif /* MTYPES_H */