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 */
1081 /** Compressed TexEnv effective Combine mode */
1082 enum gl_tex_env_mode
1084 TEXENV_MODE_REPLACE
, /* r = a0 */
1085 TEXENV_MODE_MODULATE
, /* r = a0 * a1 */
1086 TEXENV_MODE_ADD
, /* r = a0 + a1 */
1087 TEXENV_MODE_ADD_SIGNED
, /* r = a0 + a1 - 0.5 */
1088 TEXENV_MODE_INTERPOLATE
, /* r = a0 * a2 + a1 * (1 - a2) */
1089 TEXENV_MODE_SUBTRACT
, /* r = a0 - a1 */
1090 TEXENV_MODE_DOT3_RGB
, /* r = a0 . a1 */
1091 TEXENV_MODE_DOT3_RGB_EXT
, /* r = a0 . a1 */
1092 TEXENV_MODE_DOT3_RGBA
, /* r = a0 . a1 */
1093 TEXENV_MODE_DOT3_RGBA_EXT
, /* r = a0 . a1 */
1094 TEXENV_MODE_MODULATE_ADD_ATI
, /* r = a0 * a2 + a1 */
1095 TEXENV_MODE_MODULATE_SIGNED_ADD_ATI
, /* r = a0 * a2 + a1 - 0.5 */
1096 TEXENV_MODE_MODULATE_SUBTRACT_ATI
, /* r = a0 * a2 - a1 */
1097 TEXENV_MODE_ADD_PRODUCTS_NV
, /* r = a0 * a1 + a2 * a3 */
1098 TEXENV_MODE_ADD_PRODUCTS_SIGNED_NV
, /* r = a0 * a1 + a2 * a3 - 0.5 */
1102 /** Compressed TexEnv Combine source */
1103 enum gl_tex_env_source
1105 TEXENV_SRC_TEXTURE0
,
1106 TEXENV_SRC_TEXTURE1
,
1107 TEXENV_SRC_TEXTURE2
,
1108 TEXENV_SRC_TEXTURE3
,
1109 TEXENV_SRC_TEXTURE4
,
1110 TEXENV_SRC_TEXTURE5
,
1111 TEXENV_SRC_TEXTURE6
,
1112 TEXENV_SRC_TEXTURE7
,
1114 TEXENV_SRC_PREVIOUS
,
1115 TEXENV_SRC_PRIMARY_COLOR
,
1116 TEXENV_SRC_CONSTANT
,
1122 /** Compressed TexEnv Combine operand */
1123 enum gl_tex_env_operand
1126 TEXENV_OPR_ONE_MINUS_COLOR
,
1128 TEXENV_OPR_ONE_MINUS_ALPHA
,
1132 /** Compressed TexEnv Combine argument */
1133 struct gl_tex_env_argument
1136 __extension__
uint8_t Source
:4; /**< TEXENV_SRC_x */
1137 __extension__
uint8_t Operand
:2; /**< TEXENV_OPR_x */
1139 uint8_t Source
; /**< SRC_x */
1140 uint8_t Operand
; /**< OPR_x */
1146 * Compressed TexEnv Combine state.
1148 struct gl_tex_env_combine_packed
1150 uint32_t ModeRGB
:4; /**< Effective mode for RGB as 4 bits */
1151 uint32_t ModeA
:4; /**< Effective mode for RGB as 4 bits */
1152 uint32_t ScaleShiftRGB
:2; /**< 0, 1 or 2 */
1153 uint32_t ScaleShiftA
:2; /**< 0, 1 or 2 */
1154 uint32_t NumArgsRGB
:3; /**< Number of inputs used for the RGB combiner */
1155 uint32_t NumArgsA
:3; /**< Number of inputs used for the A combiner */
1156 /** Source arguments in a packed manner */
1157 struct gl_tex_env_argument ArgsRGB
[MAX_COMBINER_TERMS
];
1158 struct gl_tex_env_argument ArgsA
[MAX_COMBINER_TERMS
];
1163 * TexGenEnabled flags.
1170 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1175 * Bit flag versions of the corresponding GL_ constants.
1178 #define TEXGEN_SPHERE_MAP 0x1
1179 #define TEXGEN_OBJ_LINEAR 0x2
1180 #define TEXGEN_EYE_LINEAR 0x4
1181 #define TEXGEN_REFLECTION_MAP_NV 0x8
1182 #define TEXGEN_NORMAL_MAP_NV 0x10
1184 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1185 TEXGEN_REFLECTION_MAP_NV | \
1186 TEXGEN_NORMAL_MAP_NV)
1187 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1188 TEXGEN_REFLECTION_MAP_NV | \
1189 TEXGEN_NORMAL_MAP_NV | \
1195 /** Tex-gen enabled for texture unit? */
1196 #define ENABLE_TEXGEN(unit) (1 << (unit))
1198 /** Non-identity texture matrix for texture unit? */
1199 #define ENABLE_TEXMAT(unit) (1 << (unit))
1203 * Texture coord generation state.
1207 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1208 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1209 GLfloat ObjectPlane
[4];
1210 GLfloat EyePlane
[4];
1215 * Texture unit state. Contains enable flags, texture environment/function/
1216 * combiners, texgen state, and pointers to current texture objects.
1218 struct gl_texture_unit
1220 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1222 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1223 GLclampf EnvColor
[4];
1224 GLfloat EnvColorUnclamped
[4];
1226 struct gl_texgen GenS
;
1227 struct gl_texgen GenT
;
1228 struct gl_texgen GenR
;
1229 struct gl_texgen GenQ
;
1230 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1231 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1233 GLfloat LodBias
; /**< for biasing mipmap levels */
1235 /** Texture targets that have a non-default texture bound */
1236 GLbitfield _BoundTextures
;
1238 /** Current sampler object (GL_ARB_sampler_objects) */
1239 struct gl_sampler_object
*Sampler
;
1242 * \name GL_EXT_texture_env_combine
1244 struct gl_tex_env_combine_state Combine
;
1247 * Derived state based on \c EnvMode and the \c BaseFormat of the
1248 * currently enabled texture.
1250 struct gl_tex_env_combine_state _EnvMode
;
1253 * Currently enabled combiner state. This will point to either
1254 * \c Combine or \c _EnvMode.
1256 struct gl_tex_env_combine_state
*_CurrentCombine
;
1258 /** Current texture object pointers */
1259 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1261 /** Points to highest priority, complete and enabled texture object */
1262 struct gl_texture_object
*_Current
;
1264 /** Current compressed TexEnv & Combine state */
1265 struct gl_tex_env_combine_packed _CurrentCombinePacked
;
1270 * Texture attribute group (GL_TEXTURE_BIT).
1272 struct gl_texture_attrib
1274 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1276 /** GL_ARB_seamless_cubemap */
1277 GLboolean CubeMapSeamless
;
1279 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1281 /** GL_ARB_texture_buffer_object */
1282 struct gl_buffer_object
*BufferObject
;
1284 /** Texture coord units/sets used for fragment texturing */
1285 GLbitfield _EnabledCoordUnits
;
1287 /** Texture coord units that have texgen enabled */
1288 GLbitfield _TexGenEnabled
;
1290 /** Texture coord units that have non-identity matrices */
1291 GLbitfield _TexMatEnabled
;
1293 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1294 GLbitfield _GenFlags
;
1296 /** Largest index of a texture unit with _Current != NULL. */
1297 GLint _MaxEnabledTexImageUnit
;
1299 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1300 GLint NumCurrentTexUsed
;
1302 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1307 * Data structure representing a single clip plane (e.g. one of the elements
1308 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1310 typedef GLfloat gl_clip_plane
[4];
1314 * Transformation attribute group (GL_TRANSFORM_BIT).
1316 struct gl_transform_attrib
1318 GLenum MatrixMode
; /**< Matrix mode */
1319 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1320 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1321 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1322 GLboolean Normalize
; /**< Normalize all normals? */
1323 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1324 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1325 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1326 /** GL_ARB_clip_control */
1327 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1328 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1333 * Viewport attribute group (GL_VIEWPORT_BIT).
1335 struct gl_viewport_attrib
1337 GLfloat X
, Y
; /**< position */
1338 GLfloat Width
, Height
; /**< size */
1339 GLdouble Near
, Far
; /**< Depth buffer range */
1348 } gl_map_buffer_index
;
1352 * Fields describing a mapped buffer range.
1354 struct gl_buffer_mapping
{
1355 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1356 GLvoid
*Pointer
; /**< User-space address of mapping */
1357 GLintptr Offset
; /**< Mapped offset */
1358 GLsizeiptr Length
; /**< Mapped length */
1363 * Usages we've seen for a buffer object.
1366 USAGE_UNIFORM_BUFFER
= 0x1,
1367 USAGE_TEXTURE_BUFFER
= 0x2,
1368 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1369 USAGE_SHADER_STORAGE_BUFFER
= 0x8,
1370 USAGE_TRANSFORM_FEEDBACK_BUFFER
= 0x10,
1371 USAGE_PIXEL_PACK_BUFFER
= 0x20,
1372 USAGE_DISABLE_MINMAX_CACHE
= 0x40,
1377 * GL_ARB_vertex/pixel_buffer_object buffer object
1379 struct gl_buffer_object
1384 GLchar
*Label
; /**< GL_KHR_debug */
1385 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1386 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1387 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1388 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1389 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1390 GLboolean Written
; /**< Ever written to? (for debugging) */
1391 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1392 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1393 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1395 /** Counters used for buffer usage warnings */
1396 GLuint NumSubDataCalls
;
1397 GLuint NumMapBufferWriteCalls
;
1399 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1401 /** Memoization of min/max index computations for static index buffers */
1402 struct hash_table
*MinMaxCache
;
1403 unsigned MinMaxCacheHitIndices
;
1404 unsigned MinMaxCacheMissIndices
;
1405 bool MinMaxCacheDirty
;
1410 * Client pixel packing/unpacking attributes
1412 struct gl_pixelstore_attrib
1420 GLboolean SwapBytes
;
1422 GLboolean Invert
; /**< GL_MESA_pack_invert */
1423 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1424 GLint CompressedBlockHeight
;
1425 GLint CompressedBlockDepth
;
1426 GLint CompressedBlockSize
;
1427 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1432 * Vertex array information which is derived from gl_array_attributes
1433 * and gl_vertex_buffer_binding information. Used by the VBO module and
1436 struct gl_vertex_array
1438 GLint Size
; /**< components per element (1,2,3,4) */
1439 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1440 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1441 GLsizei StrideB
; /**< actual stride in bytes */
1442 GLuint _ElementSize
; /**< size of each element in bytes */
1443 const GLubyte
*Ptr
; /**< Points to array data */
1444 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1445 GLboolean Integer
; /**< Integer-valued? */
1446 GLboolean Doubles
; /**< double precision values are not converted to floats */
1447 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1449 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1454 * Attributes to describe a vertex array.
1456 * Contains the size, type, format and normalization flag,
1457 * along with the index of a vertex buffer binding point.
1459 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1460 * and is only present for backwards compatibility reasons.
1461 * Rendering always uses VERTEX_BINDING_STRIDE.
1462 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1463 * and VERTEX_BINDING_STRIDE to the same value, while
1464 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1466 struct gl_array_attributes
1468 GLint Size
; /**< Components per element (1,2,3,4) */
1469 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1470 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1471 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1472 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1473 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1474 GLboolean Enabled
; /**< Whether the array is enabled */
1475 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1476 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1477 GLboolean Doubles
; /**< double precision values are not converted to floats */
1478 GLuint _ElementSize
; /**< Size of each element in bytes */
1479 GLuint BufferBindingIndex
; /**< Vertex buffer binding */
1484 * This describes the buffer object used for a vertex array (or
1485 * multiple vertex arrays). If BufferObj points to the default/null
1486 * buffer object, then the vertex array lives in user memory and not a VBO.
1488 struct gl_vertex_buffer_binding
1490 GLintptr Offset
; /**< User-specified offset */
1491 GLsizei Stride
; /**< User-specified stride */
1492 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1493 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1494 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1499 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1500 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1503 struct gl_vertex_array_object
1505 /** Name of the VAO as received from glGenVertexArray. */
1510 GLchar
*Label
; /**< GL_KHR_debug */
1515 * Does the VAO use ARB semantics or Apple semantics?
1517 * There are several ways in which ARB_vertex_array_object and
1518 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1521 * - ARB VAOs require that all array data be sourced from vertex buffer
1522 * objects, but Apple VAOs do not.
1524 * - ARB VAOs require that names come from GenVertexArrays.
1526 * This flag notes which behavior governs this VAO.
1528 GLboolean ARBsemantics
;
1531 * Has this array object been bound?
1533 GLboolean EverBound
;
1536 * Derived vertex attribute arrays
1538 * This is a legacy data structure created from gl_vertex_attrib_array and
1539 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1541 struct gl_vertex_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1543 /** Vertex attribute arrays */
1544 struct gl_array_attributes VertexAttrib
[VERT_ATTRIB_MAX
];
1546 /** Vertex buffer bindings */
1547 struct gl_vertex_buffer_binding BufferBinding
[VERT_ATTRIB_MAX
];
1549 /** Mask indicating which vertex arrays have vertex buffer associated. */
1550 GLbitfield64 VertexAttribBufferMask
;
1552 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1553 GLbitfield64 _Enabled
;
1555 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1556 GLbitfield64 NewArrays
;
1558 /** The index buffer (also known as the element array buffer in OpenGL). */
1559 struct gl_buffer_object
*IndexBufferObj
;
1563 /** Used to signal when transitioning from one kind of drawing method
1567 DRAW_NONE
, /**< Initial value only */
1574 * Enum for the OpenGL APIs we know about and may support.
1576 * NOTE: This must match the api_enum table in
1577 * src/mesa/main/get_hash_generator.py
1581 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1585 API_OPENGL_LAST
= API_OPENGL_CORE
1589 * Vertex array state
1591 struct gl_array_attrib
1593 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1594 struct gl_vertex_array_object
*VAO
;
1596 /** The default vertex array object */
1597 struct gl_vertex_array_object
*DefaultVAO
;
1599 /** The last VAO accessed by a DSA function */
1600 struct gl_vertex_array_object
*LastLookedUpVAO
;
1602 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1603 struct _mesa_HashTable
*Objects
;
1605 GLint ActiveTexture
; /**< Client Active Texture */
1606 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1607 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1610 * \name Primitive restart controls
1612 * Primitive restart is enabled if either \c PrimitiveRestart or
1613 * \c PrimitiveRestartFixedIndex is set.
1616 GLboolean PrimitiveRestart
;
1617 GLboolean PrimitiveRestartFixedIndex
;
1618 GLboolean _PrimitiveRestart
;
1619 GLuint RestartIndex
;
1622 /** One of the DRAW_xxx flags, not consumed by drivers */
1623 gl_draw_method DrawMethod
;
1625 /* GL_ARB_vertex_buffer_object */
1626 struct gl_buffer_object
*ArrayBufferObj
;
1629 * Vertex arrays as consumed by a driver.
1630 * The array pointer is set up only by the VBO module.
1632 const struct gl_vertex_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1634 /** Legal array datatypes and the API for which they have been computed */
1635 GLbitfield LegalTypesMask
;
1636 gl_api LegalTypesMaskAPI
;
1641 * Feedback buffer state
1646 GLbitfield _Mask
; /**< FB_* bits */
1654 * Selection buffer state
1658 GLuint
*Buffer
; /**< selection buffer */
1659 GLuint BufferSize
; /**< size of the selection buffer */
1660 GLuint BufferCount
; /**< number of values in the selection buffer */
1661 GLuint Hits
; /**< number of records in the selection buffer */
1662 GLuint NameStackDepth
; /**< name stack depth */
1663 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1664 GLboolean HitFlag
; /**< hit flag */
1665 GLfloat HitMinZ
; /**< minimum hit depth */
1666 GLfloat HitMaxZ
; /**< maximum hit depth */
1671 * 1-D Evaluator control points
1675 GLuint Order
; /**< Number of control points */
1676 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1677 GLfloat
*Points
; /**< Points to contiguous control points */
1682 * 2-D Evaluator control points
1686 GLuint Uorder
; /**< Number of control points in U dimension */
1687 GLuint Vorder
; /**< Number of control points in V dimension */
1690 GLfloat
*Points
; /**< Points to contiguous control points */
1695 * All evaluator control point state
1697 struct gl_evaluators
1703 struct gl_1d_map Map1Vertex3
;
1704 struct gl_1d_map Map1Vertex4
;
1705 struct gl_1d_map Map1Index
;
1706 struct gl_1d_map Map1Color4
;
1707 struct gl_1d_map Map1Normal
;
1708 struct gl_1d_map Map1Texture1
;
1709 struct gl_1d_map Map1Texture2
;
1710 struct gl_1d_map Map1Texture3
;
1711 struct gl_1d_map Map1Texture4
;
1718 struct gl_2d_map Map2Vertex3
;
1719 struct gl_2d_map Map2Vertex4
;
1720 struct gl_2d_map Map2Index
;
1721 struct gl_2d_map Map2Color4
;
1722 struct gl_2d_map Map2Normal
;
1723 struct gl_2d_map Map2Texture1
;
1724 struct gl_2d_map Map2Texture2
;
1725 struct gl_2d_map Map2Texture3
;
1726 struct gl_2d_map Map2Texture4
;
1731 struct gl_transform_feedback_varying_info
1742 * Per-output info vertex shaders for transform feedback.
1744 struct gl_transform_feedback_output
1746 uint32_t OutputRegister
;
1747 uint32_t OutputBuffer
;
1748 uint32_t NumComponents
;
1751 /** offset (in DWORDs) of this output within the interleaved structure */
1755 * Offset into the output register of the data to output. For example,
1756 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1757 * offset is in the y and z components of the output register.
1759 uint32_t ComponentOffset
;
1763 struct gl_transform_feedback_buffer
1767 uint32_t NumVaryings
;
1770 * Total number of components stored in each buffer. This may be used by
1771 * hardware back-ends to determine the correct stride when interleaving
1772 * multiple transform feedback outputs in the same buffer.
1777 * Which transform feedback stream this buffer binding is associated with.
1783 /** Post-link transform feedback info. */
1784 struct gl_transform_feedback_info
1786 unsigned NumOutputs
;
1788 /* Bitmask of active buffer indices. */
1789 unsigned ActiveBuffers
;
1791 struct gl_transform_feedback_output
*Outputs
;
1793 /** Transform feedback varyings used for the linking of this shader program.
1795 * Use for glGetTransformFeedbackVarying().
1797 struct gl_transform_feedback_varying_info
*Varyings
;
1800 struct gl_transform_feedback_buffer Buffers
[MAX_FEEDBACK_BUFFERS
];
1805 * Transform feedback object state
1807 struct gl_transform_feedback_object
1809 GLuint Name
; /**< AKA the object ID */
1811 GLchar
*Label
; /**< GL_KHR_debug */
1812 GLboolean Active
; /**< Is transform feedback enabled? */
1813 GLboolean Paused
; /**< Is transform feedback paused? */
1814 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1816 GLboolean EverBound
; /**< Has this object been bound? */
1819 * GLES: if Active is true, remaining number of primitives which can be
1820 * rendered without overflow. This is necessary to track because GLES
1821 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1822 * glDrawArraysInstanced would overflow transform feedback buffers.
1823 * Undefined if Active is false.
1825 * Not tracked for desktop GL since it's unnecessary.
1827 unsigned GlesRemainingPrims
;
1830 * The program active when BeginTransformFeedback() was called.
1831 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1832 * where stage is the pipeline stage that is the source of data for
1833 * transform feedback.
1835 struct gl_program
*program
;
1837 /** The feedback buffers */
1838 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1839 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1841 /** Start of feedback data in dest buffer */
1842 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1845 * Max data to put into dest buffer (in bytes). Computed based on
1846 * RequestedSize and the actual size of the buffer.
1848 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1851 * Size that was specified when the buffer was bound. If the buffer was
1852 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1855 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1860 * Context state for transform feedback.
1862 struct gl_transform_feedback_state
1864 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1866 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1867 struct gl_buffer_object
*CurrentBuffer
;
1869 /** The table of all transform feedback objects */
1870 struct _mesa_HashTable
*Objects
;
1872 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1873 struct gl_transform_feedback_object
*CurrentObject
;
1875 /** The default xform-fb object (Name==0) */
1876 struct gl_transform_feedback_object
*DefaultObject
;
1881 * A "performance monitor" as described in AMD_performance_monitor.
1883 struct gl_perf_monitor_object
1887 /** True if the monitor is currently active (Begin called but not End). */
1891 * True if the monitor has ended.
1893 * This is distinct from !Active because it may never have began.
1898 * A list of groups with currently active counters.
1900 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1902 unsigned *ActiveGroups
;
1905 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1907 * Checking whether counter 'c' in group 'g' is active can be done via:
1909 * BITSET_TEST(ActiveCounters[g], c)
1911 GLuint
**ActiveCounters
;
1915 union gl_perf_monitor_counter_value
1923 struct gl_perf_monitor_counter
1925 /** Human readable name for the counter. */
1929 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1930 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1934 /** Minimum counter value. */
1935 union gl_perf_monitor_counter_value Minimum
;
1937 /** Maximum counter value. */
1938 union gl_perf_monitor_counter_value Maximum
;
1942 struct gl_perf_monitor_group
1944 /** Human readable name for the group. */
1948 * Maximum number of counters in this group which can be active at the
1951 GLuint MaxActiveCounters
;
1953 /** Array of counters within this group. */
1954 const struct gl_perf_monitor_counter
*Counters
;
1960 * A query object instance as described in INTEL_performance_query.
1962 * NB: We want to keep this and the corresponding backend structure
1963 * relatively lean considering that applications may expect to
1964 * allocate enough objects to be able to query around all draw calls
1967 struct gl_perf_query_object
1969 GLuint Id
; /**< hash table ID/name */
1970 unsigned Used
:1; /**< has been used for 1 or more queries */
1971 unsigned Active
:1; /**< inside Begin/EndPerfQuery */
1972 unsigned Ready
:1; /**< result is ready? */
1977 * Context state for AMD_performance_monitor.
1979 struct gl_perf_monitor_state
1981 /** Array of performance monitor groups (indexed by group ID) */
1982 const struct gl_perf_monitor_group
*Groups
;
1985 /** The table of all performance monitors. */
1986 struct _mesa_HashTable
*Monitors
;
1991 * Context state for INTEL_performance_query.
1993 struct gl_perf_query_state
1995 struct _mesa_HashTable
*Objects
; /**< The table of all performance query objects */
2000 * Names of the various vertex/fragment program register files, etc.
2002 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
2003 * All values should fit in a 4-bit field.
2005 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
2006 * considered to be "uniform" variables since they can only be set outside
2007 * glBegin/End. They're also all stored in the same Parameters array.
2011 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
2012 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
2013 PROGRAM_INPUT
, /**< machine->Inputs[] */
2014 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
2015 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
2016 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
2017 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
2018 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
2019 PROGRAM_ADDRESS
, /**< machine->AddressReg */
2020 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
2021 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
2022 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
2023 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
2024 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
2025 PROGRAM_MEMORY
, /**< for shared, global and local memory */
2026 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
2032 * Base class for any kind of program object
2036 /** FIXME: This must be first until we split shader_info from nir_shader */
2037 struct shader_info info
;
2041 GLubyte
*String
; /**< Null-terminated program text */
2043 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2044 GLenum Format
; /**< String encoding format */
2046 GLboolean _Used
; /**< Ever used for drawing? Used for debugging */
2048 struct nir_shader
*nir
;
2050 bool is_arb_asm
; /** Is this an ARB assembly-style program */
2052 /** Is this program written to on disk shader cache */
2053 bool program_written_to_cache
;
2055 GLbitfield64 SecondaryOutputsWritten
; /**< Subset of OutputsWritten outputs written with non-zero index. */
2056 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
2057 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
2058 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
2059 GLbitfield ExternalSamplersUsed
; /**< Texture units used for samplerExternalOES */
2061 /* Fragement shader only fields */
2062 GLboolean OriginUpperLeft
;
2063 GLboolean PixelCenterInteger
;
2065 /** Named parameters, constants, etc. from program text */
2066 struct gl_program_parameter_list
*Parameters
;
2068 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2069 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2071 /* FIXME: We should be able to make this struct a union. However some
2072 * drivers (i915/fragment_programs, swrast/prog_execute) mix the use of
2073 * these fields, we should fix this.
2076 /** Fields used by GLSL programs */
2078 /** Data shared by gl_program and gl_shader_program */
2079 struct gl_shader_program_data
*data
;
2081 struct gl_active_atomic_buffer
**AtomicBuffers
;
2083 /** Post-link transform feedback info. */
2084 struct gl_transform_feedback_info
*LinkedTransformFeedback
;
2087 * Number of types for subroutine uniforms.
2089 GLuint NumSubroutineUniformTypes
;
2092 * Subroutine uniform remap table
2093 * based on the program level uniform remap table.
2095 GLuint NumSubroutineUniforms
; /* non-sparse total */
2096 GLuint NumSubroutineUniformRemapTable
;
2097 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
2100 * Num of subroutine functions for this stage and storage for them.
2102 GLuint NumSubroutineFunctions
;
2103 GLuint MaxSubroutineFunctionIndex
;
2104 struct gl_subroutine_function
*SubroutineFunctions
;
2107 * Map from image uniform index to image unit (set by glUniform1i())
2109 * An image uniform index is associated with each image uniform by
2110 * the linker. The image index associated with each uniform is
2111 * stored in the \c gl_uniform_storage::image field.
2113 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2116 * Access qualifier specified in the shader for each image uniform
2117 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2120 * It may be different, though only more strict than the value of
2121 * \c gl_image_unit::Access for the corresponding image unit.
2123 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2125 struct gl_uniform_block
**UniformBlocks
;
2126 struct gl_uniform_block
**ShaderStorageBlocks
;
2128 /** Which texture target is being sampled
2129 * (TEXTURE_1D/2D/3D/etc_INDEX)
2131 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2136 * A bitmask of gl_advanced_blend_mode values
2138 GLbitfield BlendSupport
;
2143 /** ARB assembly-style program fields */
2145 struct prog_instruction
*Instructions
;
2148 * Local parameters used by the program.
2150 * It's dynamically allocated because it is rarely used (just
2151 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries
2152 * once it's allocated.
2154 GLfloat (*LocalParams
)[4];
2156 /** Bitmask of which register files are read/written with indirect
2157 * addressing. Mask of (1 << PROGRAM_x) bits.
2159 GLbitfield IndirectRegisterFiles
;
2161 /** Logical counts */
2163 GLuint NumInstructions
;
2164 GLuint NumTemporaries
;
2165 GLuint NumParameters
;
2166 GLuint NumAttributes
;
2167 GLuint NumAddressRegs
;
2168 GLuint NumAluInstructions
;
2169 GLuint NumTexInstructions
;
2170 GLuint NumTexIndirections
;
2172 /** Native, actual h/w counts */
2174 GLuint NumNativeInstructions
;
2175 GLuint NumNativeTemporaries
;
2176 GLuint NumNativeParameters
;
2177 GLuint NumNativeAttributes
;
2178 GLuint NumNativeAddressRegs
;
2179 GLuint NumNativeAluInstructions
;
2180 GLuint NumNativeTexInstructions
;
2181 GLuint NumNativeTexIndirections
;
2184 /** Used by ARB assembly-style programs. Can only be true for vertex
2187 GLboolean IsPositionInvariant
;
2194 * State common to vertex and fragment programs.
2196 struct gl_program_state
2198 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2199 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2204 * Context state for vertex programs.
2206 struct gl_vertex_program_state
2208 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2209 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2210 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2211 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2212 /** Computed two sided lighting for fixed function/programs. */
2213 GLboolean _TwoSideEnabled
;
2214 struct gl_program
*Current
; /**< User-bound vertex program */
2216 /** Currently enabled and valid vertex program (including internal
2217 * programs, user-defined vertex programs and GLSL vertex shaders).
2218 * This is the program we must use when rendering.
2220 struct gl_program
*_Current
;
2222 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2224 /** Should fixed-function T&L be implemented with a vertex prog? */
2225 GLboolean _MaintainTnlProgram
;
2227 /** Program to emulate fixed-function T&L (see above) */
2228 struct gl_program
*_TnlProgram
;
2230 /** Cache of fixed-function programs */
2231 struct gl_program_cache
*Cache
;
2233 GLboolean _Overriden
;
2237 * Context state for tessellation control programs.
2239 struct gl_tess_ctrl_program_state
2241 /** Currently bound and valid shader. */
2242 struct gl_program
*_Current
;
2244 GLint patch_vertices
;
2245 GLfloat patch_default_outer_level
[4];
2246 GLfloat patch_default_inner_level
[2];
2250 * Context state for tessellation evaluation programs.
2252 struct gl_tess_eval_program_state
2254 /** Currently bound and valid shader. */
2255 struct gl_program
*_Current
;
2259 * Context state for geometry programs.
2261 struct gl_geometry_program_state
2263 /** Currently enabled and valid program (including internal programs
2264 * and compiled shader programs).
2266 struct gl_program
*_Current
;
2270 * Context state for fragment programs.
2272 struct gl_fragment_program_state
2274 GLboolean Enabled
; /**< User-set fragment program enable flag */
2275 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2276 struct gl_program
*Current
; /**< User-bound fragment program */
2278 /** Currently enabled and valid fragment program (including internal
2279 * programs, user-defined fragment programs and GLSL fragment shaders).
2280 * This is the program we must use when rendering.
2282 struct gl_program
*_Current
;
2284 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2286 /** Should fixed-function texturing be implemented with a fragment prog? */
2287 GLboolean _MaintainTexEnvProgram
;
2289 /** Program to emulate fixed-function texture env/combine (see above) */
2290 struct gl_program
*_TexEnvProgram
;
2292 /** Cache of fixed-function programs */
2293 struct gl_program_cache
*Cache
;
2298 * Context state for compute programs.
2300 struct gl_compute_program_state
2302 /** Currently enabled and valid program (including internal programs
2303 * and compiled shader programs).
2305 struct gl_program
*_Current
;
2310 * ATI_fragment_shader runtime state
2313 struct atifs_instruction
;
2314 struct atifs_setupinst
;
2317 * ATI fragment shader
2319 struct ati_fragment_shader
2323 struct atifs_instruction
*Instructions
[2];
2324 struct atifs_setupinst
*SetupInst
[2];
2325 GLfloat Constants
[8][4];
2326 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2327 GLubyte numArithInstr
[2];
2328 GLubyte regsAssigned
[2];
2329 GLubyte NumPasses
; /**< 1 or 2 */
2331 GLubyte last_optype
;
2332 GLboolean interpinp1
;
2335 struct gl_program
*Program
;
2339 * Context state for GL_ATI_fragment_shader
2341 struct gl_ati_fragment_shader_state
2344 GLboolean _Enabled
; /**< enabled and valid shader? */
2345 GLboolean Compiling
;
2346 GLfloat GlobalConstants
[8][4];
2347 struct ati_fragment_shader
*Current
;
2351 * Shader subroutine function definition
2353 struct gl_subroutine_function
2357 int num_compat_types
;
2358 const struct glsl_type
**types
;
2362 * Shader information needed by both gl_shader and gl_linked shader.
2364 struct gl_shader_info
2367 * Tessellation Control shader state from layout qualifiers.
2371 * 0 - vertices not declared in shader, or
2372 * 1 .. GL_MAX_PATCH_VERTICES
2378 * Tessellation Evaluation shader state from layout qualifiers.
2382 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2385 GLenum PrimitiveMode
;
2387 enum gl_tess_spacing Spacing
;
2390 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2394 * 1, 0, or -1 if it's not set in this shader.
2400 * Geometry shader state from GLSL 1.50 layout qualifiers.
2405 * 0 - Invocations count not declared in shader, or
2406 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2410 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2411 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2416 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2417 * it's not set in this shader.
2423 * Compute shader state from ARB_compute_shader and
2424 * ARB_compute_variable_group_size layout qualifiers.
2428 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2429 * it's not set in this shader.
2431 unsigned LocalSize
[3];
2434 * Whether a variable work group size has been specified as defined by
2435 * ARB_compute_variable_group_size.
2437 bool LocalSizeVariable
;
2442 * A linked GLSL shader object.
2444 struct gl_linked_shader
2446 gl_shader_stage Stage
;
2449 unsigned SourceChecksum
;
2452 struct gl_program
*Program
; /**< Post-compile assembly code */
2455 * \name Sampler tracking
2457 * \note Each of these fields is only set post-linking.
2460 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2464 * Number of default uniform block components used by this shader.
2466 * This field is only set post-linking.
2468 unsigned num_uniform_components
;
2471 * Number of combined uniform components used by this shader.
2473 * This field is only set post-linking. It is the sum of the uniform block
2474 * sizes divided by sizeof(float), and num_uniform_compoennts.
2476 unsigned num_combined_uniform_components
;
2478 struct exec_list
*ir
;
2479 struct exec_list
*packed_varyings
;
2480 struct exec_list
*fragdata_arrays
;
2481 struct glsl_symbol_table
*symbols
;
2484 static inline GLbitfield
gl_external_samplers(struct gl_program
*prog
)
2486 GLbitfield external_samplers
= 0;
2487 GLbitfield mask
= prog
->SamplersUsed
;
2490 int idx
= u_bit_scan(&mask
);
2491 if (prog
->sh
.SamplerTargets
[idx
] == TEXTURE_EXTERNAL_INDEX
)
2492 external_samplers
|= (1 << idx
);
2495 return external_samplers
;
2499 * Compile status enum. compile_skipped is used to indicate the compile
2500 * was skipped due to the shader matching one that's been seen before by
2501 * the on-disk cache.
2503 enum gl_compile_status
2505 compile_failure
= 0,
2511 * A GLSL shader object.
2515 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2516 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2517 * Must be the first field.
2520 gl_shader_stage Stage
;
2521 GLuint Name
; /**< AKA the handle */
2522 GLint RefCount
; /**< Reference count */
2523 GLchar
*Label
; /**< GL_KHR_debug */
2524 unsigned char sha1
[20]; /**< SHA1 hash of pre-processed source */
2525 GLboolean DeletePending
;
2526 enum gl_compile_status CompileStatus
;
2527 bool IsES
; /**< True if this shader uses GLSL ES */
2530 unsigned SourceChecksum
; /**< for debug/logging purposes */
2532 const GLchar
*Source
; /**< Source code string */
2534 const GLchar
*FallbackSource
; /**< Fallback string used by on-disk cache*/
2538 unsigned Version
; /**< GLSL version used for linking */
2540 struct exec_list
*ir
;
2541 struct glsl_symbol_table
*symbols
;
2544 * A bitmask of gl_advanced_blend_mode values
2546 GLbitfield BlendSupport
;
2549 * Whether early fragment tests are enabled as defined by
2550 * ARB_shader_image_load_store.
2552 bool EarlyFragmentTests
;
2554 bool ARB_fragment_coord_conventions_enable
;
2556 bool redeclares_gl_fragcoord
;
2557 bool uses_gl_fragcoord
;
2559 bool PostDepthCoverage
;
2563 * Fragment shader state from GLSL 1.50 layout qualifiers.
2565 bool origin_upper_left
;
2566 bool pixel_center_integer
;
2568 /** Global xfb_stride out qualifier if any */
2569 GLuint TransformFeedbackBufferStride
[MAX_FEEDBACK_BUFFERS
];
2571 struct gl_shader_info info
;
2575 struct gl_uniform_buffer_variable
2580 * Name of the uniform as seen by glGetUniformIndices.
2582 * glGetUniformIndices requires that the block instance index \b not be
2583 * present in the name of queried uniforms.
2586 * \c gl_uniform_buffer_variable::IndexName and
2587 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2591 const struct glsl_type
*Type
;
2592 unsigned int Offset
;
2597 enum gl_uniform_block_packing
2606 struct gl_uniform_block
2608 /** Declared name of the uniform block */
2611 /** Array of supplemental information about UBO ir_variables. */
2612 struct gl_uniform_buffer_variable
*Uniforms
;
2616 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2617 * with glBindBufferBase to bind a buffer object to this uniform block. When
2618 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2623 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2624 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2626 GLuint UniformBufferSize
;
2628 /** Stages that reference this block */
2632 * Linearized array index for uniform block instance arrays
2634 * Given a uniform block instance array declared with size
2635 * blk[s_0][s_1]..[s_m], the block referenced by blk[i_0][i_1]..[i_m] will
2636 * have the linearized array index
2639 * i_m + ∑ i_j * ∏ s_k
2642 * For a uniform block instance that is not an array, this is always 0.
2644 uint8_t linearized_array_index
;
2647 * Layout specified in the shader
2649 * This isn't accessible through the API, but it is used while
2650 * cross-validating uniform blocks.
2652 enum gl_uniform_block_packing _Packing
;
2653 GLboolean _RowMajor
;
2657 * Structure that represents a reference to an atomic buffer from some
2660 struct gl_active_atomic_buffer
2662 /** Uniform indices of the atomic counters declared within it. */
2666 /** Binding point index associated with it. */
2669 /** Minimum reasonable size it is expected to have. */
2672 /** Shader stages making use of it. */
2673 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2677 * Data container for shader queries. This holds only the minimal
2678 * amount of required information for resource queries to work.
2680 struct gl_shader_variable
2683 * Declared type of the variable
2685 const struct glsl_type
*type
;
2688 * If the variable is in an interface block, this is the type of the block.
2690 const struct glsl_type
*interface_type
;
2693 * For variables inside structs (possibly recursively), this is the
2694 * outermost struct type.
2696 const struct glsl_type
*outermost_struct_type
;
2699 * Declared name of the variable
2704 * Storage location of the base of this variable
2706 * The precise meaning of this field depends on the nature of the variable.
2708 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2709 * - Vertex shader output: one of the values from \c gl_varying_slot.
2710 * - Geometry shader input: one of the values from \c gl_varying_slot.
2711 * - Geometry shader output: one of the values from \c gl_varying_slot.
2712 * - Fragment shader input: one of the values from \c gl_varying_slot.
2713 * - Fragment shader output: one of the values from \c gl_frag_result.
2714 * - Uniforms: Per-stage uniform slot number for default uniform block.
2715 * - Uniforms: Index within the uniform block definition for UBO members.
2716 * - Non-UBO Uniforms: explicit location until linking then reused to
2717 * store uniform slot number.
2718 * - Other: This field is not currently used.
2720 * If the variable is a uniform, shader input, or shader output, and the
2721 * slot has not been assigned, the value will be -1.
2726 * Specifies the first component the variable is stored in as per
2727 * ARB_enhanced_layouts.
2729 unsigned component
:2;
2732 * Output index for dual source blending.
2735 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2741 * Specifies whether a shader input/output is per-patch in tessellation
2747 * Storage class of the variable.
2749 * \sa (n)ir_variable_mode
2754 * Interpolation mode for shader inputs / outputs
2756 * \sa glsl_interp_mode
2758 unsigned interpolation
:2;
2761 * Was the location explicitly set in the shader?
2763 * If the location is explicitly set in the shader, it \b cannot be changed
2764 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2767 unsigned explicit_location
:1;
2770 * Precision qualifier.
2772 unsigned precision
:2;
2776 * Active resource in a gl_shader_program
2778 struct gl_program_resource
2780 GLenum Type
; /** Program interface type. */
2781 const void *Data
; /** Pointer to resource associated data structure. */
2782 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2786 * Link status enum. linking_skipped is used to indicate linking
2787 * was skipped due to the shader being loaded from the on-disk cache.
2791 linking_failure
= 0,
2797 * A data structure to be shared by gl_shader_program and gl_program.
2799 struct gl_shader_program_data
2801 GLint RefCount
; /**< Reference count */
2803 /** SHA1 hash of linked shader program */
2804 unsigned char sha1
[20];
2806 unsigned NumUniformStorage
;
2807 unsigned NumHiddenUniforms
;
2808 struct gl_uniform_storage
*UniformStorage
;
2810 unsigned NumUniformBlocks
;
2811 struct gl_uniform_block
*UniformBlocks
;
2813 unsigned NumShaderStorageBlocks
;
2814 struct gl_uniform_block
*ShaderStorageBlocks
;
2816 struct gl_active_atomic_buffer
*AtomicBuffers
;
2817 unsigned NumAtomicBuffers
;
2819 /* Shader cache variables used during restore */
2820 unsigned NumUniformDataSlots
;
2821 union gl_constant_value
*UniformDataSlots
;
2823 bool cache_fallback
;
2825 /** List of all active resources after linking. */
2826 struct gl_program_resource
*ProgramResourceList
;
2827 unsigned NumProgramResourceList
;
2829 enum gl_link_status LinkStatus
; /**< GL_LINK_STATUS */
2830 GLboolean Validated
;
2833 unsigned Version
; /**< GLSL version used for linking */
2835 /* Mask of stages this program was linked against */
2836 unsigned linked_stages
;
2840 * A GLSL program object.
2841 * Basically a linked collection of vertex and fragment shaders.
2843 struct gl_shader_program
2845 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2846 GLuint Name
; /**< aka handle or ID */
2847 GLchar
*Label
; /**< GL_KHR_debug */
2848 GLint RefCount
; /**< Reference count */
2849 GLboolean DeletePending
;
2852 * Is the application intending to glGetProgramBinary this program?
2854 GLboolean BinaryRetreivableHint
;
2857 * Indicates whether program can be bound for individual pipeline stages
2858 * using UseProgramStages after it is next linked.
2860 GLboolean SeparateShader
;
2862 GLuint NumShaders
; /**< number of attached shaders */
2863 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2866 * User-defined attribute bindings
2868 * These are set via \c glBindAttribLocation and are used to direct the
2869 * GLSL linker. These are \b not the values used in the compiled shader,
2870 * and they are \b not the values returned by \c glGetAttribLocation.
2872 struct string_to_uint_map
*AttributeBindings
;
2875 * User-defined fragment data bindings
2877 * These are set via \c glBindFragDataLocation and are used to direct the
2878 * GLSL linker. These are \b not the values used in the compiled shader,
2879 * and they are \b not the values returned by \c glGetFragDataLocation.
2881 struct string_to_uint_map
*FragDataBindings
;
2882 struct string_to_uint_map
*FragDataIndexBindings
;
2885 * Transform feedback varyings last specified by
2886 * glTransformFeedbackVaryings().
2888 * For the current set of transform feedback varyings used for transform
2889 * feedback output, see LinkedTransformFeedback.
2893 /** Global xfb_stride out qualifier if any */
2894 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2896 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2897 } TransformFeedback
;
2899 struct gl_program
*last_vert_prog
;
2901 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2902 enum gl_frag_depth_layout FragDepthLayout
;
2905 * Geometry shader state - copied into gl_program by
2906 * _mesa_copy_linked_program_data().
2911 bool UsesEndPrimitive
;
2916 * Compute shader state - copied into gl_program by
2917 * _mesa_copy_linked_program_data().
2921 * Size of shared variables accessed by the compute shader.
2923 unsigned SharedSize
;
2926 /** Data shared by gl_program and gl_shader_program */
2927 struct gl_shader_program_data
*data
;
2930 * Mapping from GL uniform locations returned by \c glUniformLocation to
2931 * UniformStorage entries. Arrays will have multiple contiguous slots
2932 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2934 unsigned NumUniformRemapTable
;
2935 struct gl_uniform_storage
**UniformRemapTable
;
2938 * Sometimes there are empty slots left over in UniformRemapTable after we
2939 * allocate slots to explicit locations. This list stores the blocks of
2940 * continuous empty slots inside UniformRemapTable.
2942 struct exec_list EmptyUniformLocations
;
2945 * Total number of explicit uniform location including inactive uniforms.
2947 unsigned NumExplicitUniformLocations
;
2950 * Map of active uniform names to locations
2952 * Maps any active uniform that is not an array element to a location.
2953 * Each active uniform, including individual structure members will appear
2954 * in this map. This roughly corresponds to the set of names that would be
2955 * enumerated by \c glGetActiveUniform.
2957 struct string_to_uint_map
*UniformHash
;
2959 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2961 bool IsES
; /**< True if this program uses GLSL ES */
2964 * Per-stage shaders resulting from the first stage of linking.
2966 * Set of linked shaders for this program. The array is accessed using the
2967 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2970 struct gl_linked_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2972 /* True if any of the fragment shaders attached to this program use:
2973 * #extension ARB_fragment_coord_conventions: enable
2975 GLboolean ARB_fragment_coord_conventions_enable
;
2979 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2980 #define GLSL_LOG 0x2 /**< Write shaders to files */
2981 #define GLSL_UNIFORMS 0x4 /**< Print glUniform calls */
2982 #define GLSL_NOP_VERT 0x8 /**< Force no-op vertex shaders */
2983 #define GLSL_NOP_FRAG 0x10 /**< Force no-op fragment shaders */
2984 #define GLSL_USE_PROG 0x20 /**< Log glUseProgram calls */
2985 #define GLSL_REPORT_ERRORS 0x40 /**< Print compilation errors */
2986 #define GLSL_DUMP_ON_ERROR 0x80 /**< Dump shaders to stderr on compile error */
2987 #define GLSL_CACHE_INFO 0x100 /**< Print debug information about shader cache */
2991 * Context state for GLSL vertex/fragment shaders.
2992 * Extended to support pipeline object
2994 struct gl_pipeline_object
2996 /** Name of the pipeline object as received from glGenProgramPipelines.
2997 * It would be 0 for shaders without separate shader objects.
3005 GLchar
*Label
; /**< GL_KHR_debug */
3008 * Programs used for rendering
3010 * There is a separate program set for each shader stage.
3012 struct gl_program
*CurrentProgram
[MESA_SHADER_STAGES
];
3014 struct gl_shader_program
*ReferencedPrograms
[MESA_SHADER_STAGES
];
3016 struct gl_program
*_CurrentFragmentProgram
;
3019 * Program used by glUniform calls.
3021 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
3023 struct gl_shader_program
*ActiveProgram
;
3025 GLbitfield Flags
; /**< Mask of GLSL_x flags */
3027 GLboolean EverBound
; /**< Has the pipeline object been created */
3029 GLboolean Validated
; /**< Pipeline Validation status */
3035 * Context state for GLSL pipeline shaders.
3037 struct gl_pipeline_shader_state
3039 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
3040 struct gl_pipeline_object
*Current
;
3042 /* Default Object to ensure that _Shader is never NULL */
3043 struct gl_pipeline_object
*Default
;
3045 /** Pipeline objects */
3046 struct _mesa_HashTable
*Objects
;
3050 * Compiler options for a single GLSL shaders type
3052 struct gl_shader_compiler_options
3054 /** Driver-selectable options: */
3055 GLboolean EmitNoLoops
;
3056 GLboolean EmitNoFunctions
;
3057 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
3058 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
3059 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
3060 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
3061 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
3062 * gl_CullDistance together from
3063 * float[8] to vec4[2]
3067 * \name Forms of indirect addressing the driver cannot do.
3070 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
3071 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
3072 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
3073 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
3074 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
3077 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
3078 GLuint MaxUnrollIterations
;
3081 * Optimize code for array of structures backends.
3083 * This is a proxy for:
3084 * - preferring DP4 instructions (rather than MUL/MAD) for
3085 * matrix * vector operations, such as position transformation.
3087 GLboolean OptimizeForAOS
;
3089 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
3091 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
3092 GLboolean ClampBlockIndicesToArrayBounds
;
3094 const struct nir_shader_compiler_options
*NirOptions
;
3099 * Occlusion/timer query object.
3101 struct gl_query_object
3103 GLenum Target
; /**< The query target, when active */
3104 GLuint Id
; /**< hash table ID/name */
3105 GLchar
*Label
; /**< GL_KHR_debug */
3106 GLuint64EXT Result
; /**< the counter */
3107 GLboolean Active
; /**< inside Begin/EndQuery */
3108 GLboolean Ready
; /**< result is ready? */
3109 GLboolean EverBound
;/**< has query object ever been bound */
3110 GLuint Stream
; /**< The stream */
3115 * Context state for query objects.
3117 struct gl_query_state
3119 struct _mesa_HashTable
*QueryObjects
;
3120 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
3121 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
3123 /** GL_NV_conditional_render */
3124 struct gl_query_object
*CondRenderQuery
;
3126 /** GL_EXT_transform_feedback */
3127 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
3128 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
3130 /** GL_ARB_transform_feedback_overflow_query */
3131 struct gl_query_object
*TransformFeedbackOverflow
[MAX_VERTEX_STREAMS
];
3132 struct gl_query_object
*TransformFeedbackOverflowAny
;
3134 /** GL_ARB_timer_query */
3135 struct gl_query_object
*TimeElapsed
;
3137 /** GL_ARB_pipeline_statistics_query */
3138 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3140 GLenum CondRenderMode
;
3144 /** Sync object state */
3145 struct gl_sync_object
3147 GLenum Type
; /**< GL_SYNC_FENCE */
3148 GLuint Name
; /**< Fence name */
3149 GLchar
*Label
; /**< GL_KHR_debug */
3150 GLint RefCount
; /**< Reference count */
3151 GLboolean DeletePending
; /**< Object was deleted while there were still
3152 * live references (e.g., sync not yet finished)
3154 GLenum SyncCondition
;
3155 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3156 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3161 * State which can be shared by multiple contexts:
3163 struct gl_shared_state
3165 mtx_t Mutex
; /**< for thread safety */
3166 GLint RefCount
; /**< Reference count */
3167 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3168 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3169 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3171 /** Default texture objects (shared by all texture units) */
3172 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3174 /** Fallback texture used when a bound texture is incomplete */
3175 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3178 * \name Thread safety and statechange notification for texture
3181 * \todo Improve the granularity of locking.
3184 mtx_t TexMutex
; /**< texobj thread safety */
3185 GLuint TextureStateStamp
; /**< state notification for shared tex */
3188 /** Default buffer object for vertex arrays that aren't in VBOs */
3189 struct gl_buffer_object
*NullBufferObj
;
3192 * \name Vertex/geometry/fragment programs
3195 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3196 struct gl_program
*DefaultVertexProgram
;
3197 struct gl_program
*DefaultFragmentProgram
;
3200 /* GL_ATI_fragment_shader */
3201 struct _mesa_HashTable
*ATIShaders
;
3202 struct ati_fragment_shader
*DefaultFragmentShader
;
3204 struct _mesa_HashTable
*BufferObjects
;
3206 /** Table of both gl_shader and gl_shader_program objects */
3207 struct _mesa_HashTable
*ShaderObjects
;
3209 /* GL_EXT_framebuffer_object */
3210 struct _mesa_HashTable
*RenderBuffers
;
3211 struct _mesa_HashTable
*FrameBuffers
;
3214 struct set
*SyncObjects
;
3216 /** GL_ARB_sampler_objects */
3217 struct _mesa_HashTable
*SamplerObjects
;
3220 * Some context in this share group was affected by a GPU reset
3222 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3223 * been affected by a GPU reset must also return
3224 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3226 * Once this field becomes true, it is never reset to false.
3228 bool ShareGroupReset
;
3234 * Renderbuffers represent drawing surfaces such as color, depth and/or
3235 * stencil. A framebuffer object has a set of renderbuffers.
3236 * Drivers will typically derive subclasses of this type.
3238 struct gl_renderbuffer
3240 mtx_t Mutex
; /**< for thread safety */
3241 GLuint ClassID
; /**< Useful for drivers */
3243 GLchar
*Label
; /**< GL_KHR_debug */
3245 GLuint Width
, Height
;
3247 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3248 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3250 * True for renderbuffers that wrap textures, giving the driver a chance to
3251 * flush render caches through the FinishRenderTexture hook.
3253 * Drivers may also set this on renderbuffers other than those generated by
3254 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3255 * called without a rb->TexImage.
3257 GLboolean NeedsFinishRenderTexture
;
3259 GLenum InternalFormat
; /**< The user-specified format */
3260 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3261 GL_STENCIL_INDEX. */
3262 mesa_format Format
; /**< The actual renderbuffer memory format */
3264 * Pointer to the texture image if this renderbuffer wraps a texture,
3267 * Note that the reference on the gl_texture_object containing this
3268 * TexImage is held by the gl_renderbuffer_attachment.
3270 struct gl_texture_image
*TexImage
;
3272 /** Delete this renderbuffer */
3273 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3275 /** Allocate new storage for this renderbuffer */
3276 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3277 struct gl_renderbuffer
*rb
,
3278 GLenum internalFormat
,
3279 GLuint width
, GLuint height
);
3284 * A renderbuffer attachment points to either a texture object (and specifies
3285 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3287 struct gl_renderbuffer_attachment
3289 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3293 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3294 * application supplied renderbuffer object.
3296 struct gl_renderbuffer
*Renderbuffer
;
3299 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3300 * supplied texture object.
3302 struct gl_texture_object
*Texture
;
3303 GLuint TextureLevel
; /**< Attached mipmap level. */
3304 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3305 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3306 * and 2D array textures */
3312 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3313 * In C++ terms, think of this as a base class from which device drivers
3314 * will make derived classes.
3316 struct gl_framebuffer
3318 mtx_t Mutex
; /**< for thread safety */
3320 * If zero, this is a window system framebuffer. If non-zero, this
3321 * is a FBO framebuffer; note that for some devices (i.e. those with
3322 * a natural pixel coordinate system for FBOs that differs from the
3323 * OpenGL/Mesa coordinate system), this means that the viewport,
3324 * polygon face orientation, and polygon stipple will have to be inverted.
3329 GLchar
*Label
; /**< GL_KHR_debug */
3331 GLboolean DeletePending
;
3334 * The framebuffer's visual. Immutable if this is a window system buffer.
3335 * Computed from attachments if user-made FBO.
3337 struct gl_config Visual
;
3340 * Size of frame buffer in pixels. If there are no attachments, then both
3343 GLuint Width
, Height
;
3346 * In the case that the framebuffer has no attachment (i.e.
3347 * GL_ARB_framebuffer_no_attachments) then the geometry of
3348 * the framebuffer is specified by the default values.
3351 GLuint Width
, Height
, Layers
, NumSamples
;
3352 GLboolean FixedSampleLocations
;
3353 /* Derived from NumSamples by the driver so that it can choose a valid
3354 * value for the hardware.
3359 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3360 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3361 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3368 /** \name Derived Z buffer stuff */
3370 GLuint _DepthMax
; /**< Max depth buffer value */
3371 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3372 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3375 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3378 /** Whether one of Attachment has Type != GL_NONE
3379 * NOTE: the values for Width and Height are set to 0 in case of having
3380 * no attachments, a backend driver supporting the extension
3381 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3382 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3383 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3384 * _Ymax do NOT take into account _HasAttachments being false). To get the
3385 * geometry of the framebuffer, the helper functions
3386 * _mesa_geometric_width(),
3387 * _mesa_geometric_height(),
3388 * _mesa_geometric_samples() and
3389 * _mesa_geometric_layers()
3390 * are available that check _HasAttachments.
3392 bool _HasAttachments
;
3394 GLbitfield _IntegerBuffers
; /**< Which color buffers are integer valued */
3396 /* ARB_color_buffer_float */
3397 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3398 GLboolean _HasSNormOrFloatColorBuffer
;
3401 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3402 * is not layered. For cube maps and cube map arrays, each cube face
3403 * counts as a layer. As the case for Width, Height a backend driver
3404 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3405 * in the case that _HasAttachments is false
3407 GLuint MaxNumLayers
;
3409 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3410 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3412 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3413 * attribute group and GL_PIXEL attribute group, respectively.
3415 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3416 GLenum ColorReadBuffer
;
3418 /** Computed from ColorDraw/ReadBuffer above */
3419 GLuint _NumColorDrawBuffers
;
3420 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3421 GLint _ColorReadBufferIndex
; /* -1 = None */
3422 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3423 struct gl_renderbuffer
*_ColorReadBuffer
;
3425 /** Delete this framebuffer */
3426 void (*Delete
)(struct gl_framebuffer
*fb
);
3431 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3435 GLushort RangeMin
; /**< min value exponent */
3436 GLushort RangeMax
; /**< max value exponent */
3437 GLushort Precision
; /**< number of mantissa bits */
3442 * Limits for vertex, geometry and fragment programs/shaders.
3444 struct gl_program_constants
3446 /* logical limits */
3447 GLuint MaxInstructions
;
3448 GLuint MaxAluInstructions
;
3449 GLuint MaxTexInstructions
;
3450 GLuint MaxTexIndirections
;
3453 GLuint MaxAddressRegs
;
3454 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3455 GLuint MaxParameters
;
3456 GLuint MaxLocalParams
;
3457 GLuint MaxEnvParams
;
3458 /* native/hardware limits */
3459 GLuint MaxNativeInstructions
;
3460 GLuint MaxNativeAluInstructions
;
3461 GLuint MaxNativeTexInstructions
;
3462 GLuint MaxNativeTexIndirections
;
3463 GLuint MaxNativeAttribs
;
3464 GLuint MaxNativeTemps
;
3465 GLuint MaxNativeAddressRegs
;
3466 GLuint MaxNativeParameters
;
3468 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3471 * \name Per-stage input / output limits
3473 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3474 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3475 * ES). This is stored as \c gl_constants::MaxVarying.
3477 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3478 * variables. Each stage as a certain number of outputs that it can feed
3479 * to the next stage and a certain number inputs that it can consume from
3480 * the previous stage.
3482 * Vertex shader inputs do not participate this in this accounting.
3483 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3485 * Fragment shader outputs do not participate this in this accounting.
3486 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3489 GLuint MaxInputComponents
;
3490 GLuint MaxOutputComponents
;
3493 /* ES 2.0 and GL_ARB_ES2_compatibility */
3494 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3495 struct gl_precision LowInt
, MediumInt
, HighInt
;
3496 /* GL_ARB_uniform_buffer_object */
3497 GLuint MaxUniformBlocks
;
3498 GLuint MaxCombinedUniformComponents
;
3499 GLuint MaxTextureImageUnits
;
3501 /* GL_ARB_shader_atomic_counters */
3502 GLuint MaxAtomicBuffers
;
3503 GLuint MaxAtomicCounters
;
3505 /* GL_ARB_shader_image_load_store */
3506 GLuint MaxImageUniforms
;
3508 /* GL_ARB_shader_storage_buffer_object */
3509 GLuint MaxShaderStorageBlocks
;
3514 * Constants which may be overridden by device driver during context creation
3515 * but are never changed after that.
3519 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3520 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3521 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3522 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3523 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3524 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3525 GLuint MaxTextureCoordUnits
;
3526 GLuint MaxCombinedTextureImageUnits
;
3527 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3528 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3529 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3530 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3532 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3534 GLuint MaxArrayLockSize
;
3538 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3539 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3540 GLfloat PointSizeGranularity
;
3541 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3542 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3543 GLfloat LineWidthGranularity
;
3545 GLuint MaxClipPlanes
;
3547 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3548 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3550 GLuint MaxViewportWidth
, MaxViewportHeight
;
3551 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3552 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3556 } ViewportBounds
; /**< GL_ARB_viewport_array */
3557 GLuint MaxWindowRectangles
; /**< GL_EXT_window_rectangles */
3559 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3560 GLuint MaxProgramMatrices
;
3561 GLuint MaxProgramMatrixStackDepth
;
3564 GLuint SamplesPassed
;
3567 GLuint PrimitivesGenerated
;
3568 GLuint PrimitivesWritten
;
3569 GLuint VerticesSubmitted
;
3570 GLuint PrimitivesSubmitted
;
3571 GLuint VsInvocations
;
3573 GLuint TessInvocations
;
3574 GLuint GsInvocations
;
3575 GLuint GsPrimitives
;
3576 GLuint FsInvocations
;
3577 GLuint ComputeInvocations
;
3578 GLuint ClInPrimitives
;
3579 GLuint ClOutPrimitives
;
3582 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3584 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3585 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3586 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3589 * GL_ARB_framebuffer_no_attachments
3591 GLuint MaxFramebufferWidth
;
3592 GLuint MaxFramebufferHeight
;
3593 GLuint MaxFramebufferLayers
;
3594 GLuint MaxFramebufferSamples
;
3596 /** Number of varying vectors between any two shader stages. */
3600 * GL_ARB_uniform_buffer_object
3602 GLuint MaxCombinedUniformBlocks
;
3603 GLuint MaxUniformBufferBindings
;
3604 GLuint MaxUniformBlockSize
;
3605 GLuint UniformBufferOffsetAlignment
;
3609 * GL_ARB_shader_storage_buffer_object
3611 GLuint MaxCombinedShaderStorageBlocks
;
3612 GLuint MaxShaderStorageBufferBindings
;
3613 GLuint MaxShaderStorageBlockSize
;
3614 GLuint ShaderStorageBufferOffsetAlignment
;
3618 * GL_ARB_explicit_uniform_location
3620 GLuint MaxUserAssignableUniformLocations
;
3622 /** geometry shader */
3623 GLuint MaxGeometryOutputVertices
;
3624 GLuint MaxGeometryTotalOutputComponents
;
3626 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3629 * Changes default GLSL extension behavior from "error" to "warn". It's out
3630 * of spec, but it can make some apps work that otherwise wouldn't.
3632 GLboolean ForceGLSLExtensionsWarn
;
3635 * If non-zero, forces GLSL shaders to behave as if they began
3636 * with "#version ForceGLSLVersion".
3638 GLuint ForceGLSLVersion
;
3641 * Allow GLSL #extension directives in the middle of shaders.
3643 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3646 * Allow creating a higher compat profile (version 3.1+) for apps that
3647 * request it. Be careful when adding that driconf option because some
3648 * features are unimplemented and might not work correctly.
3650 GLboolean AllowHigherCompatVersion
;
3653 * Force computing the absolute value for sqrt() and inversesqrt() to follow
3654 * D3D9 when apps rely on this behaviour.
3656 GLboolean ForceGLSLAbsSqrt
;
3659 * Force uninitialized variables to default to zero.
3661 GLboolean GLSLZeroInit
;
3664 * Does the driver support real 32-bit integers? (Otherwise, integers are
3665 * simulated via floats.)
3667 GLboolean NativeIntegers
;
3670 * Does VertexID count from zero or from base vertex?
3673 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3674 * ignored and need not be set.
3676 bool VertexID_is_zero_based
;
3679 * If the driver supports real 32-bit integers, what integer value should be
3680 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3682 GLuint UniformBooleanTrue
;
3685 * Maximum amount of time, measured in nanseconds, that the server can wait.
3687 GLuint64 MaxServerWaitTimeout
;
3689 /** GL_EXT_provoking_vertex */
3690 GLboolean QuadsFollowProvokingVertexConvention
;
3692 /** GL_ARB_viewport_array */
3693 GLenum LayerAndVPIndexProvokingVertex
;
3695 /** OpenGL version 3.0 */
3696 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3698 /** OpenGL version 3.2 */
3699 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3701 /** OpenGL version 4.4 */
3702 GLuint MaxVertexAttribStride
;
3704 /** GL_EXT_transform_feedback */
3705 GLuint MaxTransformFeedbackBuffers
;
3706 GLuint MaxTransformFeedbackSeparateComponents
;
3707 GLuint MaxTransformFeedbackInterleavedComponents
;
3708 GLuint MaxVertexStreams
;
3710 /** GL_EXT_gpu_shader4 */
3711 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3713 /** GL_ARB_texture_gather */
3714 GLuint MinProgramTextureGatherOffset
;
3715 GLuint MaxProgramTextureGatherOffset
;
3716 GLuint MaxProgramTextureGatherComponents
;
3718 /* GL_ARB_robustness */
3719 GLenum ResetStrategy
;
3721 /* GL_KHR_robustness */
3722 GLboolean RobustAccess
;
3724 /* GL_ARB_blend_func_extended */
3725 GLuint MaxDualSourceDrawBuffers
;
3728 * Whether the implementation strips out and ignores texture borders.
3730 * Many GPU hardware implementations don't support rendering with texture
3731 * borders and mipmapped textures. (Note: not static border color, but the
3732 * old 1-pixel border around each edge). Implementations then have to do
3733 * slow fallbacks to be correct, or just ignore the border and be fast but
3734 * wrong. Setting the flag strips the border off of TexImage calls,
3735 * providing "fast but wrong" at significantly reduced driver complexity.
3737 * Texture borders are deprecated in GL 3.0.
3739 GLboolean StripTextureBorder
;
3742 * For drivers which can do a better job at eliminating unused uniforms
3743 * than the GLSL compiler.
3745 * XXX Remove these as soon as a better solution is available.
3747 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3749 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3750 bool GLSLFragCoordIsSysVal
;
3751 bool GLSLFrontFacingIsSysVal
;
3754 * Run the minimum amount of GLSL optimizations to be able to link
3755 * shaders optimally (eliminate dead varyings and uniforms) and just do
3756 * all the necessary lowering.
3758 bool GLSLOptimizeConservatively
;
3761 * True if gl_TessLevelInner/Outer[] in the TES should be inputs
3762 * (otherwise, they're system values).
3764 bool GLSLTessLevelsAsInputs
;
3767 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3768 * than passing the transform feedback object to the drawing function.
3770 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3772 /** GL_ARB_map_buffer_alignment */
3773 GLuint MinMapBufferAlignment
;
3776 * Disable varying packing. This is out of spec, but potentially useful
3777 * for older platforms that supports a limited number of texture
3778 * indirections--on these platforms, unpacking the varyings in the fragment
3779 * shader increases the number of texture indirections by 1, which might
3780 * make some shaders not executable at all.
3782 * Drivers that support transform feedback must set this value to GL_FALSE.
3784 GLboolean DisableVaryingPacking
;
3787 * Should meaningful names be generated for compiler temporary variables?
3789 * Generally, it is not useful to have the compiler generate "meaningful"
3790 * names for temporary variables that it creates. This can, however, be a
3791 * useful debugging aid. In Mesa debug builds or release builds when
3792 * MESA_GLSL is set at run-time, meaningful names will be generated.
3793 * Drivers can also force names to be generated by setting this field.
3794 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3795 * vertex shader assembly) is set at run-time.
3797 bool GenerateTemporaryNames
;
3800 * Maximum value supported for an index in DrawElements and friends.
3802 * This must be at least (1ull<<24)-1. The default value is
3805 * \since ES 3.0 or GL_ARB_ES3_compatibility
3806 * \sa _mesa_init_constants
3808 GLuint64 MaxElementIndex
;
3811 * Disable interpretation of line continuations (lines ending with a
3812 * backslash character ('\') in GLSL source.
3814 GLboolean DisableGLSLLineContinuations
;
3816 /** GL_ARB_texture_multisample */
3817 GLint MaxColorTextureSamples
;
3818 GLint MaxDepthTextureSamples
;
3819 GLint MaxIntegerSamples
;
3822 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3823 * samples are laid out in a rectangular grid roughly corresponding to
3824 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3825 * are used to map indices of rectangular grid to sample numbers within
3826 * a pixel. This mapping of indices to sample numbers must be initialized
3827 * by the driver for the target hardware. For example, if we have the 8X
3828 * MSAA sample number layout (sample positions) for XYZ hardware:
3830 * sample indices layout sample number layout
3831 * --------- ---------
3832 * | 0 | 1 | | a | b |
3833 * --------- ---------
3834 * | 2 | 3 | | c | d |
3835 * --------- ---------
3836 * | 4 | 5 | | e | f |
3837 * --------- ---------
3838 * | 6 | 7 | | g | h |
3839 * --------- ---------
3841 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3843 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3845 * SampleMap8x = {a, b, c, d, e, f, g, h};
3847 * Follow the logic for sample counts 2-8.
3849 * For 16x the sample indices layout as a 4x4 grid as follows:
3861 uint8_t SampleMap2x
[2];
3862 uint8_t SampleMap4x
[4];
3863 uint8_t SampleMap8x
[8];
3864 uint8_t SampleMap16x
[16];
3866 /** GL_ARB_shader_atomic_counters */
3867 GLuint MaxAtomicBufferBindings
;
3868 GLuint MaxAtomicBufferSize
;
3869 GLuint MaxCombinedAtomicBuffers
;
3870 GLuint MaxCombinedAtomicCounters
;
3872 /** GL_ARB_vertex_attrib_binding */
3873 GLint MaxVertexAttribRelativeOffset
;
3874 GLint MaxVertexAttribBindings
;
3876 /* GL_ARB_shader_image_load_store */
3877 GLuint MaxImageUnits
;
3878 GLuint MaxCombinedShaderOutputResources
;
3879 GLuint MaxImageSamples
;
3880 GLuint MaxCombinedImageUniforms
;
3882 /** GL_ARB_compute_shader */
3883 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3884 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3885 GLuint MaxComputeWorkGroupInvocations
;
3886 GLuint MaxComputeSharedMemorySize
;
3888 /** GL_ARB_compute_variable_group_size */
3889 GLuint MaxComputeVariableGroupSize
[3]; /* Array of x, y, z dimensions */
3890 GLuint MaxComputeVariableGroupInvocations
;
3892 /** GL_ARB_gpu_shader5 */
3893 GLfloat MinFragmentInterpolationOffset
;
3894 GLfloat MaxFragmentInterpolationOffset
;
3896 GLboolean FakeSWMSAA
;
3898 /** GL_KHR_context_flush_control */
3899 GLenum ContextReleaseBehavior
;
3901 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3903 /** GL_ARB_tessellation_shader */
3904 GLuint MaxPatchVertices
;
3905 GLuint MaxTessGenLevel
;
3906 GLuint MaxTessPatchComponents
;
3907 GLuint MaxTessControlTotalOutputComponents
;
3908 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3909 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3910 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3911 bool PrimitiveRestartForPatches
;
3912 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3913 * gl_LocalInvocationIndex based on
3914 * other builtin variables. */
3916 /** GL_OES_primitive_bounding_box */
3917 bool NoPrimitiveBoundingBoxOutput
;
3919 /** GL_ARB_sparse_buffer */
3920 GLuint SparseBufferPageSize
;
3922 /** Used as an input for sha1 generation in the on-disk shader cache */
3923 unsigned char *dri_config_options_sha1
;
3928 * Enable flag for each OpenGL extension. Different device drivers will
3929 * enable different extensions at runtime.
3931 struct gl_extensions
3933 GLboolean dummy
; /* don't remove this! */
3934 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3935 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3936 GLboolean ANGLE_texture_compression_dxt
;
3937 GLboolean ARB_ES2_compatibility
;
3938 GLboolean ARB_ES3_compatibility
;
3939 GLboolean ARB_ES3_1_compatibility
;
3940 GLboolean ARB_ES3_2_compatibility
;
3941 GLboolean ARB_arrays_of_arrays
;
3942 GLboolean ARB_base_instance
;
3943 GLboolean ARB_blend_func_extended
;
3944 GLboolean ARB_buffer_storage
;
3945 GLboolean ARB_clear_texture
;
3946 GLboolean ARB_clip_control
;
3947 GLboolean ARB_color_buffer_float
;
3948 GLboolean ARB_compute_shader
;
3949 GLboolean ARB_compute_variable_group_size
;
3950 GLboolean ARB_conditional_render_inverted
;
3951 GLboolean ARB_conservative_depth
;
3952 GLboolean ARB_copy_image
;
3953 GLboolean ARB_cull_distance
;
3954 GLboolean ARB_depth_buffer_float
;
3955 GLboolean ARB_depth_clamp
;
3956 GLboolean ARB_depth_texture
;
3957 GLboolean ARB_derivative_control
;
3958 GLboolean ARB_draw_buffers_blend
;
3959 GLboolean ARB_draw_elements_base_vertex
;
3960 GLboolean ARB_draw_indirect
;
3961 GLboolean ARB_draw_instanced
;
3962 GLboolean ARB_fragment_coord_conventions
;
3963 GLboolean ARB_fragment_layer_viewport
;
3964 GLboolean ARB_fragment_program
;
3965 GLboolean ARB_fragment_program_shadow
;
3966 GLboolean ARB_fragment_shader
;
3967 GLboolean ARB_framebuffer_no_attachments
;
3968 GLboolean ARB_framebuffer_object
;
3969 GLboolean ARB_enhanced_layouts
;
3970 GLboolean ARB_explicit_attrib_location
;
3971 GLboolean ARB_explicit_uniform_location
;
3972 GLboolean ARB_gpu_shader5
;
3973 GLboolean ARB_gpu_shader_fp64
;
3974 GLboolean ARB_gpu_shader_int64
;
3975 GLboolean ARB_half_float_vertex
;
3976 GLboolean ARB_indirect_parameters
;
3977 GLboolean ARB_instanced_arrays
;
3978 GLboolean ARB_internalformat_query
;
3979 GLboolean ARB_internalformat_query2
;
3980 GLboolean ARB_map_buffer_range
;
3981 GLboolean ARB_occlusion_query
;
3982 GLboolean ARB_occlusion_query2
;
3983 GLboolean ARB_pipeline_statistics_query
;
3984 GLboolean ARB_point_sprite
;
3985 GLboolean ARB_post_depth_coverage
;
3986 GLboolean ARB_query_buffer_object
;
3987 GLboolean ARB_robust_buffer_access_behavior
;
3988 GLboolean ARB_sample_shading
;
3989 GLboolean ARB_seamless_cube_map
;
3990 GLboolean ARB_shader_atomic_counter_ops
;
3991 GLboolean ARB_shader_atomic_counters
;
3992 GLboolean ARB_shader_ballot
;
3993 GLboolean ARB_shader_bit_encoding
;
3994 GLboolean ARB_shader_clock
;
3995 GLboolean ARB_shader_draw_parameters
;
3996 GLboolean ARB_shader_group_vote
;
3997 GLboolean ARB_shader_image_load_store
;
3998 GLboolean ARB_shader_image_size
;
3999 GLboolean ARB_shader_precision
;
4000 GLboolean ARB_shader_stencil_export
;
4001 GLboolean ARB_shader_storage_buffer_object
;
4002 GLboolean ARB_shader_subroutine
;
4003 GLboolean ARB_shader_texture_image_samples
;
4004 GLboolean ARB_shader_texture_lod
;
4005 GLboolean ARB_shader_viewport_layer_array
;
4006 GLboolean ARB_shading_language_packing
;
4007 GLboolean ARB_shading_language_420pack
;
4008 GLboolean ARB_shadow
;
4009 GLboolean ARB_sparse_buffer
;
4010 GLboolean ARB_stencil_texturing
;
4012 GLboolean ARB_tessellation_shader
;
4013 GLboolean ARB_texture_border_clamp
;
4014 GLboolean ARB_texture_buffer_object
;
4015 GLboolean ARB_texture_buffer_object_rgb32
;
4016 GLboolean ARB_texture_buffer_range
;
4017 GLboolean ARB_texture_compression_bptc
;
4018 GLboolean ARB_texture_compression_rgtc
;
4019 GLboolean ARB_texture_cube_map
;
4020 GLboolean ARB_texture_cube_map_array
;
4021 GLboolean ARB_texture_env_combine
;
4022 GLboolean ARB_texture_env_crossbar
;
4023 GLboolean ARB_texture_env_dot3
;
4024 GLboolean ARB_texture_float
;
4025 GLboolean ARB_texture_gather
;
4026 GLboolean ARB_texture_mirror_clamp_to_edge
;
4027 GLboolean ARB_texture_multisample
;
4028 GLboolean ARB_texture_non_power_of_two
;
4029 GLboolean ARB_texture_stencil8
;
4030 GLboolean ARB_texture_query_levels
;
4031 GLboolean ARB_texture_query_lod
;
4032 GLboolean ARB_texture_rg
;
4033 GLboolean ARB_texture_rgb10_a2ui
;
4034 GLboolean ARB_texture_view
;
4035 GLboolean ARB_timer_query
;
4036 GLboolean ARB_transform_feedback2
;
4037 GLboolean ARB_transform_feedback3
;
4038 GLboolean ARB_transform_feedback_instanced
;
4039 GLboolean ARB_transform_feedback_overflow_query
;
4040 GLboolean ARB_uniform_buffer_object
;
4041 GLboolean ARB_vertex_attrib_64bit
;
4042 GLboolean ARB_vertex_program
;
4043 GLboolean ARB_vertex_shader
;
4044 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
4045 GLboolean ARB_vertex_type_2_10_10_10_rev
;
4046 GLboolean ARB_viewport_array
;
4047 GLboolean EXT_blend_color
;
4048 GLboolean EXT_blend_equation_separate
;
4049 GLboolean EXT_blend_func_separate
;
4050 GLboolean EXT_blend_minmax
;
4051 GLboolean EXT_depth_bounds_test
;
4052 GLboolean EXT_draw_buffers2
;
4053 GLboolean EXT_framebuffer_multisample
;
4054 GLboolean EXT_framebuffer_multisample_blit_scaled
;
4055 GLboolean EXT_framebuffer_sRGB
;
4056 GLboolean EXT_gpu_program_parameters
;
4057 GLboolean EXT_gpu_shader4
;
4058 GLboolean EXT_packed_float
;
4059 GLboolean EXT_pixel_buffer_object
;
4060 GLboolean EXT_point_parameters
;
4061 GLboolean EXT_polygon_offset_clamp
;
4062 GLboolean EXT_provoking_vertex
;
4063 GLboolean EXT_shader_integer_mix
;
4064 GLboolean EXT_shader_samples_identical
;
4065 GLboolean EXT_stencil_two_side
;
4066 GLboolean EXT_texture_array
;
4067 GLboolean EXT_texture_compression_latc
;
4068 GLboolean EXT_texture_compression_s3tc
;
4069 GLboolean EXT_texture_env_dot3
;
4070 GLboolean EXT_texture_filter_anisotropic
;
4071 GLboolean EXT_texture_integer
;
4072 GLboolean EXT_texture_mirror_clamp
;
4073 GLboolean EXT_texture_shared_exponent
;
4074 GLboolean EXT_texture_snorm
;
4075 GLboolean EXT_texture_sRGB
;
4076 GLboolean EXT_texture_sRGB_decode
;
4077 GLboolean EXT_texture_swizzle
;
4078 GLboolean EXT_transform_feedback
;
4079 GLboolean EXT_timer_query
;
4080 GLboolean EXT_vertex_array_bgra
;
4081 GLboolean EXT_window_rectangles
;
4082 GLboolean OES_copy_image
;
4083 GLboolean OES_primitive_bounding_box
;
4084 GLboolean OES_sample_variables
;
4085 GLboolean OES_standard_derivatives
;
4086 GLboolean OES_texture_buffer
;
4087 GLboolean OES_texture_cube_map_array
;
4088 GLboolean OES_viewport_array
;
4089 /* vendor extensions */
4090 GLboolean AMD_performance_monitor
;
4091 GLboolean AMD_pinned_memory
;
4092 GLboolean AMD_seamless_cubemap_per_texture
;
4093 GLboolean AMD_vertex_shader_layer
;
4094 GLboolean AMD_vertex_shader_viewport_index
;
4095 GLboolean ANDROID_extension_pack_es31a
;
4096 GLboolean APPLE_object_purgeable
;
4097 GLboolean ATI_meminfo
;
4098 GLboolean ATI_texture_compression_3dc
;
4099 GLboolean ATI_texture_mirror_once
;
4100 GLboolean ATI_texture_env_combine3
;
4101 GLboolean ATI_fragment_shader
;
4102 GLboolean ATI_separate_stencil
;
4103 GLboolean GREMEDY_string_marker
;
4104 GLboolean INTEL_conservative_rasterization
;
4105 GLboolean INTEL_performance_query
;
4106 GLboolean KHR_blend_equation_advanced
;
4107 GLboolean KHR_blend_equation_advanced_coherent
;
4108 GLboolean KHR_robustness
;
4109 GLboolean KHR_texture_compression_astc_hdr
;
4110 GLboolean KHR_texture_compression_astc_ldr
;
4111 GLboolean KHR_texture_compression_astc_sliced_3d
;
4112 GLboolean MESA_pack_invert
;
4113 GLboolean MESA_shader_framebuffer_fetch
;
4114 GLboolean MESA_shader_framebuffer_fetch_non_coherent
;
4115 GLboolean MESA_shader_integer_functions
;
4116 GLboolean MESA_ycbcr_texture
;
4117 GLboolean NV_conditional_render
;
4118 GLboolean NV_fill_rectangle
;
4119 GLboolean NV_fog_distance
;
4120 GLboolean NV_point_sprite
;
4121 GLboolean NV_primitive_restart
;
4122 GLboolean NV_texture_barrier
;
4123 GLboolean NV_texture_env_combine4
;
4124 GLboolean NV_texture_rectangle
;
4125 GLboolean NV_vdpau_interop
;
4126 GLboolean NVX_gpu_memory_info
;
4127 GLboolean TDFX_texture_compression_FXT1
;
4128 GLboolean OES_EGL_image
;
4129 GLboolean OES_draw_texture
;
4130 GLboolean OES_depth_texture_cube_map
;
4131 GLboolean OES_EGL_image_external
;
4132 GLboolean OES_texture_float
;
4133 GLboolean OES_texture_float_linear
;
4134 GLboolean OES_texture_half_float
;
4135 GLboolean OES_texture_half_float_linear
;
4136 GLboolean OES_compressed_ETC1_RGB8_texture
;
4137 GLboolean OES_geometry_shader
;
4138 GLboolean OES_texture_compression_astc
;
4139 GLboolean extension_sentinel
;
4140 /** The extension string */
4141 const GLubyte
*String
;
4142 /** Number of supported extensions */
4145 * The context version which extension helper functions compare against.
4146 * By default, the value is equal to ctx->Version. This changes to ~0
4147 * while meta is in progress.
4154 * A stack of matrices (projection, modelview, color, texture, etc).
4156 struct gl_matrix_stack
4158 GLmatrix
*Top
; /**< points into Stack */
4159 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
4160 unsigned StackSize
; /**< Number of elements in Stack */
4161 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
4162 GLuint MaxDepth
; /**< size of Stack[] array */
4163 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
4168 * \name Bits for image transfer operations
4169 * \sa __struct gl_contextRec::ImageTransferState.
4172 #define IMAGE_SCALE_BIAS_BIT 0x1
4173 #define IMAGE_SHIFT_OFFSET_BIT 0x2
4174 #define IMAGE_MAP_COLOR_BIT 0x4
4175 #define IMAGE_CLAMP_BIT 0x800
4178 /** Pixel Transfer ops */
4179 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4180 IMAGE_SHIFT_OFFSET_BIT | \
4181 IMAGE_MAP_COLOR_BIT)
4184 * \name Bits to indicate what state has changed.
4187 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4188 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4189 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4190 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4191 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4192 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4193 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4194 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4195 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4196 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4197 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4198 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4199 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4200 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4201 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4202 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4203 #define _NEW_TEXTURE_OBJECT (1u << 16) /**< gl_context::Texture (bindings only) */
4204 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4205 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4206 #define _NEW_TEXTURE_STATE (1u << 19) /**< gl_context::Texture (states only) */
4207 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4208 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4209 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4210 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4211 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4212 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4213 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4214 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4215 #define _NEW_BUFFER_OBJECT (1u << 28)
4216 #define _NEW_FRAG_CLAMP (1u << 29)
4217 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4218 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4224 * Composite state flags
4227 #define _NEW_TEXTURE (_NEW_TEXTURE_OBJECT | _NEW_TEXTURE_STATE)
4229 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4230 _NEW_TEXTURE_STATE | \
4235 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4245 /* This has to be included here. */
4250 * Display list flags.
4251 * Strictly this is a tnl-private concept, but it doesn't seem
4252 * worthwhile adding a tnl private structure just to hold this one bit
4255 #define DLIST_DANGLING_REFS 0x1
4258 /** Opaque declaration of display list payload data type */
4259 union gl_dlist_node
;
4263 * Provide a location where information about a display list can be
4264 * collected. Could be extended with driverPrivate structures,
4265 * etc. in the future.
4267 struct gl_display_list
4270 GLchar
*Label
; /**< GL_KHR_debug */
4271 GLbitfield Flags
; /**< DLIST_x flags */
4272 /** The dlist commands are in a linked list of nodes */
4273 union gl_dlist_node
*Head
;
4278 * State used during display list compilation and execution.
4280 struct gl_dlist_state
4282 GLuint CallDepth
; /**< Current recursion calling depth */
4284 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4285 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4286 GLuint CurrentPos
; /**< Index into current block of nodes */
4288 GLvertexformat ListVtxfmt
;
4290 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4291 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4293 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4294 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4297 /* State known to have been set by the currently-compiling display
4298 * list. Used to eliminate some redundant state changes.
4306 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4307 * to small enums suitable for use as an array index.
4310 enum mesa_debug_source
{
4311 MESA_DEBUG_SOURCE_API
,
4312 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4313 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4314 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4315 MESA_DEBUG_SOURCE_APPLICATION
,
4316 MESA_DEBUG_SOURCE_OTHER
,
4317 MESA_DEBUG_SOURCE_COUNT
4320 enum mesa_debug_type
{
4321 MESA_DEBUG_TYPE_ERROR
,
4322 MESA_DEBUG_TYPE_DEPRECATED
,
4323 MESA_DEBUG_TYPE_UNDEFINED
,
4324 MESA_DEBUG_TYPE_PORTABILITY
,
4325 MESA_DEBUG_TYPE_PERFORMANCE
,
4326 MESA_DEBUG_TYPE_OTHER
,
4327 MESA_DEBUG_TYPE_MARKER
,
4328 MESA_DEBUG_TYPE_PUSH_GROUP
,
4329 MESA_DEBUG_TYPE_POP_GROUP
,
4330 MESA_DEBUG_TYPE_COUNT
4333 enum mesa_debug_severity
{
4334 MESA_DEBUG_SEVERITY_LOW
,
4335 MESA_DEBUG_SEVERITY_MEDIUM
,
4336 MESA_DEBUG_SEVERITY_HIGH
,
4337 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4338 MESA_DEBUG_SEVERITY_COUNT
4344 * Driver-specific state flags.
4346 * These are or'd with gl_context::NewDriverState to notify a driver about
4347 * a state change. The driver sets the flags at context creation and
4348 * the meaning of the bits set is opaque to core Mesa.
4350 struct gl_driver_flags
4352 /** gl_context::Array::_DrawArrays (vertex array state) */
4355 /** gl_context::TransformFeedback::CurrentObject */
4356 uint64_t NewTransformFeedback
;
4358 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4359 uint64_t NewTransformFeedbackProg
;
4361 /** gl_context::RasterDiscard */
4362 uint64_t NewRasterizerDiscard
;
4365 * gl_context::UniformBufferBindings
4366 * gl_shader_program::UniformBlocks
4368 uint64_t NewUniformBuffer
;
4371 * gl_context::ShaderStorageBufferBindings
4372 * gl_shader_program::ShaderStorageBlocks
4374 uint64_t NewShaderStorageBuffer
;
4376 uint64_t NewTextureBuffer
;
4379 * gl_context::AtomicBufferBindings
4381 uint64_t NewAtomicBuffer
;
4384 * gl_context::ImageUnits
4386 uint64_t NewImageUnits
;
4389 * gl_context::TessCtrlProgram::patch_default_*
4391 uint64_t NewDefaultTessLevels
;
4394 * gl_context::IntelConservativeRasterization
4396 uint64_t NewIntelConservativeRasterization
;
4399 struct gl_uniform_buffer_binding
4401 struct gl_buffer_object
*BufferObject
;
4402 /** Start of uniform block data in the buffer */
4404 /** Size of data allowed to be referenced from the buffer (in bytes) */
4407 * glBindBufferBase() indicates that the Size should be ignored and only
4408 * limited by the current size of the BufferObject.
4410 GLboolean AutomaticSize
;
4413 struct gl_shader_storage_buffer_binding
4415 struct gl_buffer_object
*BufferObject
;
4416 /** Start of shader storage block data in the buffer */
4418 /** Size of data allowed to be referenced from the buffer (in bytes) */
4421 * glBindBufferBase() indicates that the Size should be ignored and only
4422 * limited by the current size of the BufferObject.
4424 GLboolean AutomaticSize
;
4428 * ARB_shader_image_load_store image unit.
4430 struct gl_image_unit
4433 * Texture object bound to this unit.
4435 struct gl_texture_object
*TexObj
;
4438 * Level of the texture object bound to this unit.
4443 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4444 * GL_FALSE if only some specific layer of the texture is bound.
4450 * Layer of the texture object bound to this unit as specified by the
4456 * Layer of the texture object bound to this unit, or zero if the
4457 * whole level is bound.
4462 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4463 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4468 * GL internal format that determines the interpretation of the
4469 * image memory when shader image operations are performed through
4475 * Mesa format corresponding to \c Format.
4477 mesa_format _ActualFormat
;
4482 * Binding point for an atomic counter buffer object.
4484 struct gl_atomic_buffer_binding
4486 struct gl_buffer_object
*BufferObject
;
4492 * Shader subroutines storage
4494 struct gl_subroutine_index_binding
4501 * Mesa rendering context.
4503 * This is the central context data structure for Mesa. Almost all
4504 * OpenGL state is contained in this structure.
4505 * Think of this as a base class from which device drivers will derive
4510 /** State possibly shared with other contexts in the address space */
4511 struct gl_shared_state
*Shared
;
4513 /** \name API function pointer tables */
4518 * The current dispatch table for non-displaylist-saving execution, either
4519 * BeginEnd or OutsideBeginEnd
4521 struct _glapi_table
*Exec
;
4523 * The normal dispatch table for non-displaylist-saving, non-begin/end
4525 struct _glapi_table
*OutsideBeginEnd
;
4526 /** The dispatch table used between glNewList() and glEndList() */
4527 struct _glapi_table
*Save
;
4529 * The dispatch table used between glBegin() and glEnd() (outside of a
4530 * display list). Only valid functions between those two are set, which is
4531 * mostly just the set in a GLvertexformat struct.
4533 struct _glapi_table
*BeginEnd
;
4535 * Dispatch table for when a graphics reset has happened.
4537 struct _glapi_table
*ContextLost
;
4539 * Dispatch table used to marshal API calls from the client program to a
4540 * separate server thread. NULL if API calls are not being marshalled to
4543 struct _glapi_table
*MarshalExec
;
4545 * Dispatch table currently in use for fielding API calls from the client
4546 * program. If API calls are being marshalled to another thread, this ==
4547 * MarshalExec. Otherwise it == CurrentServerDispatch.
4549 struct _glapi_table
*CurrentClientDispatch
;
4552 * Dispatch table currently in use for performing API calls. == Save or
4555 struct _glapi_table
*CurrentServerDispatch
;
4559 struct glthread_state
*GLThread
;
4561 struct gl_config Visual
;
4562 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4563 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4564 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4565 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4568 * Device driver function pointer table
4570 struct dd_function_table Driver
;
4572 /** Core/Driver constants */
4573 struct gl_constants Const
;
4575 /** \name The various 4x4 matrix stacks */
4577 struct gl_matrix_stack ModelviewMatrixStack
;
4578 struct gl_matrix_stack ProjectionMatrixStack
;
4579 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4580 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4581 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4584 /** Combined modelview and projection matrix */
4585 GLmatrix _ModelProjectMatrix
;
4587 /** \name Display lists */
4588 struct gl_dlist_state ListState
;
4590 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4591 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4593 /** Extension information */
4594 struct gl_extensions Extensions
;
4596 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4598 char *VersionString
;
4600 /** \name State attribute stack (for glPush/PopAttrib) */
4602 GLuint AttribStackDepth
;
4603 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4606 /** \name Renderer attribute groups
4608 * We define a struct for each attribute group to make pushing and popping
4609 * attributes easy. Also it's a good organization.
4612 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4613 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4614 struct gl_current_attrib Current
; /**< Current attributes */
4615 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4616 struct gl_eval_attrib Eval
; /**< Eval attributes */
4617 struct gl_fog_attrib Fog
; /**< Fog attributes */
4618 struct gl_hint_attrib Hint
; /**< Hint attributes */
4619 struct gl_light_attrib Light
; /**< Light attributes */
4620 struct gl_line_attrib Line
; /**< Line attributes */
4621 struct gl_list_attrib List
; /**< List attributes */
4622 struct gl_multisample_attrib Multisample
;
4623 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4624 struct gl_point_attrib Point
; /**< Point attributes */
4625 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4626 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4627 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4628 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4629 struct gl_texture_attrib Texture
; /**< Texture attributes */
4630 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4631 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4634 /** \name Client attribute stack */
4636 GLuint ClientAttribStackDepth
;
4637 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4640 /** \name Client attribute groups */
4642 struct gl_array_attrib Array
; /**< Vertex arrays */
4643 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4644 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4645 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4648 /** \name Other assorted state (not pushed/popped on attribute stack) */
4650 struct gl_pixelmaps PixelMaps
;
4652 struct gl_evaluators EvalMap
; /**< All evaluators */
4653 struct gl_feedback Feedback
; /**< Feedback */
4654 struct gl_selection Select
; /**< Selection */
4656 struct gl_program_state Program
; /**< general program state */
4657 struct gl_vertex_program_state VertexProgram
;
4658 struct gl_fragment_program_state FragmentProgram
;
4659 struct gl_geometry_program_state GeometryProgram
;
4660 struct gl_compute_program_state ComputeProgram
;
4661 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4662 struct gl_tess_eval_program_state TessEvalProgram
;
4663 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4665 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4666 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4669 * Current active shader pipeline state
4671 * Almost all internal users want ::_Shader instead of ::Shader. The
4672 * exceptions are bits of legacy GLSL API that do not know about separate
4675 * If a program is active via \c glUseProgram, this will point to
4678 * If a program pipeline is active via \c glBindProgramPipeline, this will
4679 * point to \c ::Pipeline.Current.
4681 * If neither a program nor a program pipeline is active, this will point to
4682 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4685 struct gl_pipeline_object
*_Shader
;
4687 struct gl_query_state Query
; /**< occlusion, timer queries */
4689 struct gl_transform_feedback_state TransformFeedback
;
4691 struct gl_perf_monitor_state PerfMonitor
;
4692 struct gl_perf_query_state PerfQuery
;
4694 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4695 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4696 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4698 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4699 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4701 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4704 * Current GL_ARB_uniform_buffer_object binding referenced by
4705 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4707 struct gl_buffer_object
*UniformBuffer
;
4710 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4711 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4713 struct gl_buffer_object
*ShaderStorageBuffer
;
4716 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4717 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4718 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4721 struct gl_uniform_buffer_binding
4722 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4725 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4726 * and GL 4.3. This is set up using glBindBufferRange() or
4727 * glBindBufferBase(). They are associated with shader storage blocks by
4728 * glShaderStorageBlockBinding()'s state in the shader program.
4730 struct gl_shader_storage_buffer_binding
4731 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4734 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4737 struct gl_buffer_object
*AtomicBuffer
;
4740 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4743 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4746 * Array of atomic counter buffer binding points.
4748 struct gl_atomic_buffer_binding
4749 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4752 * Array of image units for ARB_shader_image_load_store.
4754 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4756 struct gl_subroutine_index_binding SubroutineIndex
[MESA_SHADER_STAGES
];
4759 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4761 /* GL_EXT_framebuffer_object */
4762 struct gl_renderbuffer
*CurrentRenderbuffer
;
4764 GLenum ErrorValue
; /**< Last error code */
4767 * Recognize and silence repeated error debug messages in buggy apps.
4769 const char *ErrorDebugFmtString
;
4770 GLuint ErrorDebugCount
;
4772 /* GL_ARB_debug_output/GL_KHR_debug */
4774 struct gl_debug_state
*Debug
;
4776 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4777 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4778 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4780 struct gl_driver_flags DriverFlags
;
4782 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4784 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4786 /** \name Derived state */
4787 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4788 GLfloat _EyeZDir
[3];
4789 GLfloat _ModelViewInvScale
;
4790 GLboolean _NeedEyeCoords
;
4791 GLboolean _ForceEyeCoords
;
4793 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4795 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4797 /** \name For debugging/development only */
4799 GLboolean FirstTimeCurrent
;
4803 * False if this context was created without a config. This is needed
4804 * because the initial state of glDrawBuffers depends on this
4806 GLboolean HasConfig
;
4808 /** software compression/decompression supported or not */
4809 GLboolean Mesa_DXTn
;
4811 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4813 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4814 GLboolean IntelConservativeRasterization
; /**< GL_INTEL_CONSERVATIVE_RASTERIZATION */
4817 * \name Hooks for module contexts.
4819 * These will eventually live in the driver or elsewhere.
4822 void *swrast_context
;
4823 void *swsetup_context
;
4824 void *swtnl_context
;
4825 struct vbo_context
*vbo_context
;
4826 struct st_context
*st
;
4831 * \name NV_vdpau_interop
4834 const void *vdpDevice
;
4835 const void *vdpGetProcAddress
;
4836 struct set
*vdpSurfaces
;
4840 * Has this context observed a GPU reset in any context in the share group?
4842 * Once this field becomes true, it is never reset to false.
4844 GLboolean ShareGroupReset
;
4847 * \name OES_primitive_bounding_box
4849 * Stores the arguments to glPrimitiveBoundingBox
4851 GLfloat PrimitiveBoundingBox
[8];
4853 struct disk_cache
*Cache
;
4857 * Information about memory usage. All sizes are in kilobytes.
4859 struct gl_memory_info
4861 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4862 unsigned avail_device_memory
; /**< free device memory at the moment */
4863 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4864 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4865 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4866 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4870 extern int MESA_VERBOSE
;
4871 extern int MESA_DEBUG_FLAGS
;
4872 # define MESA_FUNCTION __func__
4874 # define MESA_VERBOSE 0
4875 # define MESA_DEBUG_FLAGS 0
4876 # define MESA_FUNCTION "a function"
4880 /** The MESA_VERBOSE var is a bitmask of these flags */
4883 VERBOSE_VARRAY
= 0x0001,
4884 VERBOSE_TEXTURE
= 0x0002,
4885 VERBOSE_MATERIAL
= 0x0004,
4886 VERBOSE_PIPELINE
= 0x0008,
4887 VERBOSE_DRIVER
= 0x0010,
4888 VERBOSE_STATE
= 0x0020,
4889 VERBOSE_API
= 0x0040,
4890 VERBOSE_DISPLAY_LIST
= 0x0100,
4891 VERBOSE_LIGHTING
= 0x0200,
4892 VERBOSE_PRIMS
= 0x0400,
4893 VERBOSE_VERTS
= 0x0800,
4894 VERBOSE_DISASSEM
= 0x1000,
4895 VERBOSE_DRAW
= 0x2000,
4896 VERBOSE_SWAPBUFFERS
= 0x4000
4900 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4903 DEBUG_SILENT
= (1 << 0),
4904 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4905 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4906 DEBUG_INCOMPLETE_FBO
= (1 << 3),
4907 DEBUG_CONTEXT
= (1 << 4)
4914 #endif /* MTYPES_H */