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 * Fog attribute group (GL_FOG_BIT).
582 GLboolean Enabled
; /**< Fog enabled flag */
583 GLboolean ColorSumEnabled
;
584 GLfloat ColorUnclamped
[4]; /**< Fog color */
585 GLfloat Color
[4]; /**< Fog color */
586 GLfloat Density
; /**< Density >= 0.0 */
587 GLfloat Start
; /**< Start distance in eye coords */
588 GLfloat End
; /**< End distance in eye coords */
589 GLfloat Index
; /**< Fog index */
590 GLenum Mode
; /**< Fog mode */
591 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
592 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
593 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
598 * Hint attribute group (GL_HINT_BIT).
600 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
602 struct gl_hint_attrib
604 GLenum PerspectiveCorrection
;
607 GLenum PolygonSmooth
;
609 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
610 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
611 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
616 * Lighting attribute group (GL_LIGHT_BIT).
618 struct gl_light_attrib
620 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
621 struct gl_lightmodel Model
; /**< Lighting model */
624 * Front and back material values.
625 * Note: must call FLUSH_VERTICES() before using.
627 struct gl_material Material
;
629 GLboolean Enabled
; /**< Lighting enabled flag */
630 GLboolean ColorMaterialEnabled
;
632 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
633 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
634 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
635 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
636 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
639 GLboolean _ClampVertexColor
;
640 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
643 * Derived state for optimizations:
646 GLbitfield _EnabledLights
; /**< bitmask containing enabled lights */
648 GLboolean _NeedEyeCoords
;
649 GLboolean _NeedVertices
; /**< Use fast shader? */
651 GLfloat _BaseColor
[2][3];
657 * Line attribute group (GL_LINE_BIT).
659 struct gl_line_attrib
661 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
662 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
663 GLushort StipplePattern
; /**< Stipple pattern */
664 GLint StippleFactor
; /**< Stipple repeat factor */
665 GLfloat Width
; /**< Line width */
670 * Display list attribute group (GL_LIST_BIT).
672 struct gl_list_attrib
679 * Multisample attribute group (GL_MULTISAMPLE_BIT).
681 struct gl_multisample_attrib
684 GLboolean SampleAlphaToCoverage
;
685 GLboolean SampleAlphaToOne
;
686 GLboolean SampleCoverage
;
687 GLboolean SampleCoverageInvert
;
688 GLboolean SampleShading
;
690 /* ARB_texture_multisample / GL3.2 additions */
691 GLboolean SampleMask
;
693 GLfloat SampleCoverageValue
;
694 GLfloat MinSampleShadingValue
;
696 /** The GL spec defines this as an array but >32x MSAA is madness */
697 GLbitfield SampleMaskValue
;
702 * A pixelmap (see glPixelMap)
707 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
712 * Collection of all pixelmaps
716 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
717 struct gl_pixelmap GtoG
;
718 struct gl_pixelmap BtoB
;
719 struct gl_pixelmap AtoA
;
720 struct gl_pixelmap ItoR
;
721 struct gl_pixelmap ItoG
;
722 struct gl_pixelmap ItoB
;
723 struct gl_pixelmap ItoA
;
724 struct gl_pixelmap ItoI
;
725 struct gl_pixelmap StoS
;
730 * Pixel attribute group (GL_PIXEL_MODE_BIT).
732 struct gl_pixel_attrib
734 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
736 /*--- Begin Pixel Transfer State ---*/
737 /* Fields are in the order in which they're applied... */
739 /** Scale & Bias (index shift, offset) */
741 GLfloat RedBias
, RedScale
;
742 GLfloat GreenBias
, GreenScale
;
743 GLfloat BlueBias
, BlueScale
;
744 GLfloat AlphaBias
, AlphaScale
;
745 GLfloat DepthBias
, DepthScale
;
746 GLint IndexShift
, IndexOffset
;
750 /* Note: actual pixel maps are not part of this attrib group */
751 GLboolean MapColorFlag
;
752 GLboolean MapStencilFlag
;
754 /*--- End Pixel Transfer State ---*/
757 GLfloat ZoomX
, ZoomY
;
762 * Point attribute group (GL_POINT_BIT).
764 struct gl_point_attrib
766 GLfloat Size
; /**< User-specified point size */
767 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
768 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
769 GLfloat Threshold
; /**< GL_EXT_point_parameters */
770 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
771 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
772 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
773 GLbitfield CoordReplace
; /**< GL_ARB_point_sprite*/
774 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
775 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
780 * Polygon attribute group (GL_POLYGON_BIT).
782 struct gl_polygon_attrib
784 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
785 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
786 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
787 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
788 GLboolean CullFlag
; /**< Culling on/off flag */
789 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
790 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
791 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
792 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
793 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
794 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
795 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
796 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
797 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
802 * Scissor attributes (GL_SCISSOR_BIT).
804 struct gl_scissor_rect
806 GLint X
, Y
; /**< Lower left corner of box */
807 GLsizei Width
, Height
; /**< Size of box */
809 struct gl_scissor_attrib
811 GLbitfield EnableFlags
; /**< Scissor test enabled? */
812 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
813 GLint NumWindowRects
; /**< Count of enabled window rectangles */
814 GLenum WindowRectMode
; /**< Whether to include or exclude the rects */
815 struct gl_scissor_rect WindowRects
[MAX_WINDOW_RECTANGLES
];
820 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
822 * Three sets of stencil data are tracked so that OpenGL 2.0,
823 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
824 * simultaneously. In each of the stencil state arrays, element 0 corresponds
825 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
826 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
827 * GL_EXT_stencil_two_side GL_BACK state.
829 * The derived value \c _BackFace is either 1 or 2 depending on whether or
830 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
832 * The derived value \c _TestTwoSide is set when the front-face and back-face
833 * stencil state are different.
835 struct gl_stencil_attrib
837 GLboolean Enabled
; /**< Enabled flag */
838 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
839 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
840 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
841 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
842 GLboolean _TestTwoSide
;
843 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
844 GLenum Function
[3]; /**< Stencil function */
845 GLenum FailFunc
[3]; /**< Fail function */
846 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
847 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
848 GLint Ref
[3]; /**< Reference value */
849 GLuint ValueMask
[3]; /**< Value mask */
850 GLuint WriteMask
[3]; /**< Write mask */
851 GLuint Clear
; /**< Clear value */
856 * An index for each type of texture object. These correspond to the GL
857 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
858 * Note: the order is from highest priority to lowest priority.
862 TEXTURE_2D_MULTISAMPLE_INDEX
,
863 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
864 TEXTURE_CUBE_ARRAY_INDEX
,
865 TEXTURE_BUFFER_INDEX
,
866 TEXTURE_2D_ARRAY_INDEX
,
867 TEXTURE_1D_ARRAY_INDEX
,
868 TEXTURE_EXTERNAL_INDEX
,
879 * Bit flags for each type of texture object
882 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
883 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
884 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
885 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
886 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
887 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
888 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
889 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
890 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
891 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
892 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
893 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
898 * Texture image state. Drivers will typically create a subclass of this
899 * with extra fields for memory buffers, etc.
901 struct gl_texture_image
903 GLint InternalFormat
; /**< Internal format as given by the user */
904 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
905 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
906 * GL_INTENSITY, GL_DEPTH_COMPONENT or
907 * GL_DEPTH_STENCIL_EXT only. Used for
908 * choosing TexEnv arithmetic.
910 mesa_format TexFormat
; /**< The actual texture memory format */
912 GLuint Border
; /**< 0 or 1 */
913 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
914 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
915 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
916 GLuint Width2
; /**< = Width - 2*Border */
917 GLuint Height2
; /**< = Height - 2*Border */
918 GLuint Depth2
; /**< = Depth - 2*Border */
919 GLuint WidthLog2
; /**< = log2(Width2) */
920 GLuint HeightLog2
; /**< = log2(Height2) */
921 GLuint DepthLog2
; /**< = log2(Depth2) */
922 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
923 levels, computed from the dimensions */
925 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
926 GLuint Level
; /**< Which mipmap level am I? */
927 /** Cube map face: index into gl_texture_object::Image[] array */
930 /** GL_ARB_texture_multisample */
931 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
932 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
937 * Indexes for cube map faces.
952 * Sampler object state. These objects are new with GL_ARB_sampler_objects
953 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
955 struct gl_sampler_object
960 GLchar
*Label
; /**< GL_KHR_debug */
962 GLenum WrapS
; /**< S-axis texture image wrap mode */
963 GLenum WrapT
; /**< T-axis texture image wrap mode */
964 GLenum WrapR
; /**< R-axis texture image wrap mode */
965 GLenum MinFilter
; /**< minification filter */
966 GLenum MagFilter
; /**< magnification filter */
967 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
968 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
969 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
970 GLfloat LodBias
; /**< OpenGL 1.4 */
971 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
972 GLenum CompareMode
; /**< GL_ARB_shadow */
973 GLenum CompareFunc
; /**< GL_ARB_shadow */
974 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
975 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
980 * Texture object state. Contains the array of mipmap images, border color,
981 * wrap modes, filter modes, and shadow/texcompare state.
983 struct gl_texture_object
985 mtx_t Mutex
; /**< for thread safety */
986 GLint RefCount
; /**< reference count */
987 GLuint Name
; /**< the user-visible texture object ID */
988 GLchar
*Label
; /**< GL_KHR_debug */
989 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
990 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
991 Only valid when Target is valid. */
993 struct gl_sampler_object Sampler
;
995 GLenum DepthMode
; /**< GL_ARB_depth_texture */
996 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
998 GLfloat Priority
; /**< in [0,1] */
999 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1000 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1001 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1002 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1003 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1004 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1005 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1006 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1007 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1008 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1009 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1010 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1011 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1012 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1014 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1015 GLboolean _IsFloat
; /**< GL_OES_float_texture */
1016 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
1018 GLuint MinLevel
; /**< GL_ARB_texture_view */
1019 GLuint MinLayer
; /**< GL_ARB_texture_view */
1020 GLuint NumLevels
; /**< GL_ARB_texture_view */
1021 GLuint NumLayers
; /**< GL_ARB_texture_view */
1023 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1024 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1026 /** GL_ARB_texture_buffer_object */
1027 struct gl_buffer_object
*BufferObject
;
1028 GLenum BufferObjectFormat
;
1029 /** Equivalent Mesa format for BufferObjectFormat. */
1030 mesa_format _BufferObjectFormat
;
1031 /** GL_ARB_texture_buffer_range */
1032 GLintptr BufferOffset
;
1033 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1035 /** GL_OES_EGL_image_external */
1036 GLint RequiredTextureImageUnits
;
1038 /** GL_ARB_shader_image_load_store */
1039 GLenum ImageFormatCompatibilityType
;
1043 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1044 #define MAX_COMBINER_TERMS 4
1048 * Texture combine environment state.
1050 struct gl_tex_env_combine_state
1052 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1053 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1054 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1055 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1056 GLenum SourceA
[MAX_COMBINER_TERMS
];
1057 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1058 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1059 GLenum OperandA
[MAX_COMBINER_TERMS
];
1060 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1061 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1062 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1063 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1068 * TexGenEnabled flags.
1075 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1080 * Bit flag versions of the corresponding GL_ constants.
1083 #define TEXGEN_SPHERE_MAP 0x1
1084 #define TEXGEN_OBJ_LINEAR 0x2
1085 #define TEXGEN_EYE_LINEAR 0x4
1086 #define TEXGEN_REFLECTION_MAP_NV 0x8
1087 #define TEXGEN_NORMAL_MAP_NV 0x10
1089 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1090 TEXGEN_REFLECTION_MAP_NV | \
1091 TEXGEN_NORMAL_MAP_NV)
1092 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1093 TEXGEN_REFLECTION_MAP_NV | \
1094 TEXGEN_NORMAL_MAP_NV | \
1100 /** Tex-gen enabled for texture unit? */
1101 #define ENABLE_TEXGEN(unit) (1 << (unit))
1103 /** Non-identity texture matrix for texture unit? */
1104 #define ENABLE_TEXMAT(unit) (1 << (unit))
1108 * Texture coord generation state.
1112 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1113 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1114 GLfloat ObjectPlane
[4];
1115 GLfloat EyePlane
[4];
1120 * Texture unit state. Contains enable flags, texture environment/function/
1121 * combiners, texgen state, and pointers to current texture objects.
1123 struct gl_texture_unit
1125 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1127 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1128 GLclampf EnvColor
[4];
1129 GLfloat EnvColorUnclamped
[4];
1131 struct gl_texgen GenS
;
1132 struct gl_texgen GenT
;
1133 struct gl_texgen GenR
;
1134 struct gl_texgen GenQ
;
1135 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1136 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1138 GLfloat LodBias
; /**< for biasing mipmap levels */
1140 /** Texture targets that have a non-default texture bound */
1141 GLbitfield _BoundTextures
;
1143 /** Current sampler object (GL_ARB_sampler_objects) */
1144 struct gl_sampler_object
*Sampler
;
1147 * \name GL_EXT_texture_env_combine
1149 struct gl_tex_env_combine_state Combine
;
1152 * Derived state based on \c EnvMode and the \c BaseFormat of the
1153 * currently enabled texture.
1155 struct gl_tex_env_combine_state _EnvMode
;
1158 * Currently enabled combiner state. This will point to either
1159 * \c Combine or \c _EnvMode.
1161 struct gl_tex_env_combine_state
*_CurrentCombine
;
1163 /** Current texture object pointers */
1164 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1166 /** Points to highest priority, complete and enabled texture object */
1167 struct gl_texture_object
*_Current
;
1173 * Texture attribute group (GL_TEXTURE_BIT).
1175 struct gl_texture_attrib
1177 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1179 /** GL_ARB_seamless_cubemap */
1180 GLboolean CubeMapSeamless
;
1182 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1184 /** GL_ARB_texture_buffer_object */
1185 struct gl_buffer_object
*BufferObject
;
1187 /** Texture coord units/sets used for fragment texturing */
1188 GLbitfield _EnabledCoordUnits
;
1190 /** Texture coord units that have texgen enabled */
1191 GLbitfield _TexGenEnabled
;
1193 /** Texture coord units that have non-identity matrices */
1194 GLbitfield _TexMatEnabled
;
1196 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1197 GLbitfield _GenFlags
;
1199 /** Largest index of a texture unit with _Current != NULL. */
1200 GLint _MaxEnabledTexImageUnit
;
1202 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1203 GLint NumCurrentTexUsed
;
1205 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1210 * Data structure representing a single clip plane (e.g. one of the elements
1211 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1213 typedef GLfloat gl_clip_plane
[4];
1217 * Transformation attribute group (GL_TRANSFORM_BIT).
1219 struct gl_transform_attrib
1221 GLenum MatrixMode
; /**< Matrix mode */
1222 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1223 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1224 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1225 GLboolean Normalize
; /**< Normalize all normals? */
1226 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1227 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1228 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1229 /** GL_ARB_clip_control */
1230 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1231 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1236 * Viewport attribute group (GL_VIEWPORT_BIT).
1238 struct gl_viewport_attrib
1240 GLfloat X
, Y
; /**< position */
1241 GLfloat Width
, Height
; /**< size */
1242 GLdouble Near
, Far
; /**< Depth buffer range */
1251 } gl_map_buffer_index
;
1255 * Fields describing a mapped buffer range.
1257 struct gl_buffer_mapping
{
1258 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1259 GLvoid
*Pointer
; /**< User-space address of mapping */
1260 GLintptr Offset
; /**< Mapped offset */
1261 GLsizeiptr Length
; /**< Mapped length */
1266 * Usages we've seen for a buffer object.
1269 USAGE_UNIFORM_BUFFER
= 0x1,
1270 USAGE_TEXTURE_BUFFER
= 0x2,
1271 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1272 USAGE_SHADER_STORAGE_BUFFER
= 0x8,
1273 USAGE_TRANSFORM_FEEDBACK_BUFFER
= 0x10,
1274 USAGE_PIXEL_PACK_BUFFER
= 0x20,
1275 USAGE_DISABLE_MINMAX_CACHE
= 0x40,
1280 * GL_ARB_vertex/pixel_buffer_object buffer object
1282 struct gl_buffer_object
1287 GLchar
*Label
; /**< GL_KHR_debug */
1288 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1289 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1290 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1291 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1292 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1293 GLboolean Written
; /**< Ever written to? (for debugging) */
1294 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1295 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1296 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1298 /** Counters used for buffer usage warnings */
1299 GLuint NumSubDataCalls
;
1300 GLuint NumMapBufferWriteCalls
;
1302 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1304 /** Memoization of min/max index computations for static index buffers */
1305 struct hash_table
*MinMaxCache
;
1306 unsigned MinMaxCacheHitIndices
;
1307 unsigned MinMaxCacheMissIndices
;
1308 bool MinMaxCacheDirty
;
1313 * Client pixel packing/unpacking attributes
1315 struct gl_pixelstore_attrib
1323 GLboolean SwapBytes
;
1325 GLboolean Invert
; /**< GL_MESA_pack_invert */
1326 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1327 GLint CompressedBlockHeight
;
1328 GLint CompressedBlockDepth
;
1329 GLint CompressedBlockSize
;
1330 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1335 * Client vertex array attributes
1337 struct gl_client_array
1339 GLint Size
; /**< components per element (1,2,3,4) */
1340 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1341 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1342 GLsizei StrideB
; /**< actual stride in bytes */
1343 GLuint _ElementSize
; /**< size of each element in bytes */
1344 const GLubyte
*Ptr
; /**< Points to array data */
1345 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1346 GLboolean Integer
; /**< Integer-valued? */
1347 GLboolean Doubles
; /**< double precision values are not converted to floats */
1348 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1350 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1355 * Attributes to describe a vertex array.
1357 * Contains the size, type, format and normalization flag,
1358 * along with the index of a vertex buffer binding point.
1360 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1361 * and is only present for backwards compatibility reasons.
1362 * Rendering always uses VERTEX_BINDING_STRIDE.
1363 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1364 * and VERTEX_BINDING_STRIDE to the same value, while
1365 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1367 struct gl_array_attributes
1369 GLint Size
; /**< Components per element (1,2,3,4) */
1370 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1371 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1372 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1373 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1374 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1375 GLboolean Enabled
; /**< Whether the array is enabled */
1376 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1377 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1378 GLboolean Doubles
; /**< double precision values are not converted to floats */
1379 GLuint _ElementSize
; /**< Size of each element in bytes */
1380 GLuint BufferBindingIndex
; /**< Vertex buffer binding */
1385 * This describes the buffer object used for a vertex array (or
1386 * multiple vertex arrays). If BufferObj points to the default/null
1387 * buffer object, then the vertex array lives in user memory and not a VBO.
1389 struct gl_vertex_buffer_binding
1391 GLintptr Offset
; /**< User-specified offset */
1392 GLsizei Stride
; /**< User-specified stride */
1393 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1394 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1395 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1400 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1401 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1404 struct gl_vertex_array_object
1406 /** Name of the VAO as received from glGenVertexArray. */
1411 GLchar
*Label
; /**< GL_KHR_debug */
1416 * Does the VAO use ARB semantics or Apple semantics?
1418 * There are several ways in which ARB_vertex_array_object and
1419 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1422 * - ARB VAOs require that all array data be sourced from vertex buffer
1423 * objects, but Apple VAOs do not.
1425 * - ARB VAOs require that names come from GenVertexArrays.
1427 * This flag notes which behavior governs this VAO.
1429 GLboolean ARBsemantics
;
1432 * Has this array object been bound?
1434 GLboolean EverBound
;
1437 * Derived vertex attribute arrays
1439 * This is a legacy data structure created from gl_vertex_attrib_array and
1440 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1442 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1444 /** Vertex attribute arrays */
1445 struct gl_array_attributes VertexAttrib
[VERT_ATTRIB_MAX
];
1447 /** Vertex buffer bindings */
1448 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1450 /** Mask indicating which vertex arrays have vertex buffer associated. */
1451 GLbitfield64 VertexAttribBufferMask
;
1453 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1454 GLbitfield64 _Enabled
;
1456 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1457 GLbitfield64 NewArrays
;
1459 /** The index buffer (also known as the element array buffer in OpenGL). */
1460 struct gl_buffer_object
*IndexBufferObj
;
1464 /** Used to signal when transitioning from one kind of drawing method
1468 DRAW_NONE
, /**< Initial value only */
1475 * Enum for the OpenGL APIs we know about and may support.
1477 * NOTE: This must match the api_enum table in
1478 * src/mesa/main/get_hash_generator.py
1482 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1486 API_OPENGL_LAST
= API_OPENGL_CORE
1490 * Vertex array state
1492 struct gl_array_attrib
1494 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1495 struct gl_vertex_array_object
*VAO
;
1497 /** The default vertex array object */
1498 struct gl_vertex_array_object
*DefaultVAO
;
1500 /** The last VAO accessed by a DSA function */
1501 struct gl_vertex_array_object
*LastLookedUpVAO
;
1503 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1504 struct _mesa_HashTable
*Objects
;
1506 GLint ActiveTexture
; /**< Client Active Texture */
1507 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1508 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1511 * \name Primitive restart controls
1513 * Primitive restart is enabled if either \c PrimitiveRestart or
1514 * \c PrimitiveRestartFixedIndex is set.
1517 GLboolean PrimitiveRestart
;
1518 GLboolean PrimitiveRestartFixedIndex
;
1519 GLboolean _PrimitiveRestart
;
1520 GLuint RestartIndex
;
1523 /** One of the DRAW_xxx flags, not consumed by drivers */
1524 gl_draw_method DrawMethod
;
1526 /* GL_ARB_vertex_buffer_object */
1527 struct gl_buffer_object
*ArrayBufferObj
;
1530 * Vertex arrays as consumed by a driver.
1531 * The array pointer is set up only by the VBO module.
1533 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1535 /** Legal array datatypes and the API for which they have been computed */
1536 GLbitfield LegalTypesMask
;
1537 gl_api LegalTypesMaskAPI
;
1542 * Feedback buffer state
1547 GLbitfield _Mask
; /**< FB_* bits */
1555 * Selection buffer state
1559 GLuint
*Buffer
; /**< selection buffer */
1560 GLuint BufferSize
; /**< size of the selection buffer */
1561 GLuint BufferCount
; /**< number of values in the selection buffer */
1562 GLuint Hits
; /**< number of records in the selection buffer */
1563 GLuint NameStackDepth
; /**< name stack depth */
1564 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1565 GLboolean HitFlag
; /**< hit flag */
1566 GLfloat HitMinZ
; /**< minimum hit depth */
1567 GLfloat HitMaxZ
; /**< maximum hit depth */
1572 * 1-D Evaluator control points
1576 GLuint Order
; /**< Number of control points */
1577 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1578 GLfloat
*Points
; /**< Points to contiguous control points */
1583 * 2-D Evaluator control points
1587 GLuint Uorder
; /**< Number of control points in U dimension */
1588 GLuint Vorder
; /**< Number of control points in V dimension */
1591 GLfloat
*Points
; /**< Points to contiguous control points */
1596 * All evaluator control point state
1598 struct gl_evaluators
1604 struct gl_1d_map Map1Vertex3
;
1605 struct gl_1d_map Map1Vertex4
;
1606 struct gl_1d_map Map1Index
;
1607 struct gl_1d_map Map1Color4
;
1608 struct gl_1d_map Map1Normal
;
1609 struct gl_1d_map Map1Texture1
;
1610 struct gl_1d_map Map1Texture2
;
1611 struct gl_1d_map Map1Texture3
;
1612 struct gl_1d_map Map1Texture4
;
1619 struct gl_2d_map Map2Vertex3
;
1620 struct gl_2d_map Map2Vertex4
;
1621 struct gl_2d_map Map2Index
;
1622 struct gl_2d_map Map2Color4
;
1623 struct gl_2d_map Map2Normal
;
1624 struct gl_2d_map Map2Texture1
;
1625 struct gl_2d_map Map2Texture2
;
1626 struct gl_2d_map Map2Texture3
;
1627 struct gl_2d_map Map2Texture4
;
1632 struct gl_transform_feedback_varying_info
1643 * Per-output info vertex shaders for transform feedback.
1645 struct gl_transform_feedback_output
1647 uint32_t OutputRegister
;
1648 uint32_t OutputBuffer
;
1649 uint32_t NumComponents
;
1652 /** offset (in DWORDs) of this output within the interleaved structure */
1656 * Offset into the output register of the data to output. For example,
1657 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1658 * offset is in the y and z components of the output register.
1660 uint32_t ComponentOffset
;
1664 struct gl_transform_feedback_buffer
1668 uint32_t NumVaryings
;
1671 * Total number of components stored in each buffer. This may be used by
1672 * hardware back-ends to determine the correct stride when interleaving
1673 * multiple transform feedback outputs in the same buffer.
1678 * Which transform feedback stream this buffer binding is associated with.
1684 /** Post-link transform feedback info. */
1685 struct gl_transform_feedback_info
1687 unsigned NumOutputs
;
1689 /* Bitmask of active buffer indices. */
1690 unsigned ActiveBuffers
;
1692 struct gl_transform_feedback_output
*Outputs
;
1694 /** Transform feedback varyings used for the linking of this shader program.
1696 * Use for glGetTransformFeedbackVarying().
1698 struct gl_transform_feedback_varying_info
*Varyings
;
1701 struct gl_transform_feedback_buffer Buffers
[MAX_FEEDBACK_BUFFERS
];
1706 * Transform feedback object state
1708 struct gl_transform_feedback_object
1710 GLuint Name
; /**< AKA the object ID */
1712 GLchar
*Label
; /**< GL_KHR_debug */
1713 GLboolean Active
; /**< Is transform feedback enabled? */
1714 GLboolean Paused
; /**< Is transform feedback paused? */
1715 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1717 GLboolean EverBound
; /**< Has this object been bound? */
1720 * GLES: if Active is true, remaining number of primitives which can be
1721 * rendered without overflow. This is necessary to track because GLES
1722 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1723 * glDrawArraysInstanced would overflow transform feedback buffers.
1724 * Undefined if Active is false.
1726 * Not tracked for desktop GL since it's unnecessary.
1728 unsigned GlesRemainingPrims
;
1731 * The shader program active when BeginTransformFeedback() was called.
1732 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1733 * where stage is the pipeline stage that is the source of data for
1734 * transform feedback.
1736 struct gl_shader_program
*shader_program
;
1738 /** The feedback buffers */
1739 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1740 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1742 /** Start of feedback data in dest buffer */
1743 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1746 * Max data to put into dest buffer (in bytes). Computed based on
1747 * RequestedSize and the actual size of the buffer.
1749 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1752 * Size that was specified when the buffer was bound. If the buffer was
1753 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1756 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1761 * Context state for transform feedback.
1763 struct gl_transform_feedback_state
1765 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1767 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1768 struct gl_buffer_object
*CurrentBuffer
;
1770 /** The table of all transform feedback objects */
1771 struct _mesa_HashTable
*Objects
;
1773 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1774 struct gl_transform_feedback_object
*CurrentObject
;
1776 /** The default xform-fb object (Name==0) */
1777 struct gl_transform_feedback_object
*DefaultObject
;
1782 * A "performance monitor" as described in AMD_performance_monitor.
1784 struct gl_perf_monitor_object
1788 /** True if the monitor is currently active (Begin called but not End). */
1792 * True if the monitor has ended.
1794 * This is distinct from !Active because it may never have began.
1799 * A list of groups with currently active counters.
1801 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1803 unsigned *ActiveGroups
;
1806 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1808 * Checking whether counter 'c' in group 'g' is active can be done via:
1810 * BITSET_TEST(ActiveCounters[g], c)
1812 GLuint
**ActiveCounters
;
1816 union gl_perf_monitor_counter_value
1824 struct gl_perf_monitor_counter
1826 /** Human readable name for the counter. */
1830 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1831 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1835 /** Minimum counter value. */
1836 union gl_perf_monitor_counter_value Minimum
;
1838 /** Maximum counter value. */
1839 union gl_perf_monitor_counter_value Maximum
;
1843 struct gl_perf_monitor_group
1845 /** Human readable name for the group. */
1849 * Maximum number of counters in this group which can be active at the
1852 GLuint MaxActiveCounters
;
1854 /** Array of counters within this group. */
1855 const struct gl_perf_monitor_counter
*Counters
;
1861 * Context state for AMD_performance_monitor.
1863 struct gl_perf_monitor_state
1865 /** Array of performance monitor groups (indexed by group ID) */
1866 const struct gl_perf_monitor_group
*Groups
;
1869 /** The table of all performance monitors. */
1870 struct _mesa_HashTable
*Monitors
;
1875 * Names of the various vertex/fragment program register files, etc.
1877 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1878 * All values should fit in a 4-bit field.
1880 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1881 * considered to be "uniform" variables since they can only be set outside
1882 * glBegin/End. They're also all stored in the same Parameters array.
1886 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1887 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1888 PROGRAM_INPUT
, /**< machine->Inputs[] */
1889 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1890 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1891 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1892 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1893 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1894 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1895 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1896 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1897 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1898 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
1899 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
1900 PROGRAM_MEMORY
, /**< for shared, global and local memory */
1901 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
1907 * Base class for any kind of program object
1914 GLubyte
*String
; /**< Null-terminated program text */
1916 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1917 GLenum Format
; /**< String encoding format */
1919 struct prog_instruction
*Instructions
;
1921 struct nir_shader
*nir
;
1923 struct shader_info info
;
1925 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1926 GLbitfield64 DoubleInputsRead
; /**< Bitmask of which input regs are read and are doubles */
1927 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1928 GLbitfield64 SecondaryOutputsWritten
; /**< Subset of OutputsWritten outputs written with non-zero index. */
1929 GLbitfield64 OutputsRead
; /**< Bitmask of which output regs are read */
1930 GLbitfield PatchInputsRead
; /**< VAR[0..31] usage for patch inputs (user-defined only) */
1931 GLbitfield PatchOutputsWritten
; /**< VAR[0..31] usage for patch outputs (user-defined only) */
1932 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1933 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1934 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1935 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1936 GLbitfield ExternalSamplersUsed
; /**< Texture units used for samplerExternalOES */
1938 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
1941 * For vertex and geometry shaders, true if the program uses the
1942 * gl_ClipDistance output. Ignored for fragment shaders.
1944 unsigned ClipDistanceArraySize
;
1945 unsigned CullDistanceArraySize
;
1948 /** Named parameters, constants, etc. from program text */
1949 struct gl_program_parameter_list
*Parameters
;
1952 * Local parameters used by the program.
1954 * It's dynamically allocated because it is rarely used (just
1955 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
1958 GLfloat (*LocalParams
)[4];
1960 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1961 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1963 /** Bitmask of which register files are read/written with indirect
1964 * addressing. Mask of (1 << PROGRAM_x) bits.
1966 GLbitfield IndirectRegisterFiles
;
1968 /** Logical counts */
1970 GLuint NumInstructions
;
1971 GLuint NumTemporaries
;
1972 GLuint NumParameters
;
1973 GLuint NumAttributes
;
1974 GLuint NumAddressRegs
;
1975 GLuint NumAluInstructions
;
1976 GLuint NumTexInstructions
;
1977 GLuint NumTexIndirections
;
1979 /** Native, actual h/w counts */
1981 GLuint NumNativeInstructions
;
1982 GLuint NumNativeTemporaries
;
1983 GLuint NumNativeParameters
;
1984 GLuint NumNativeAttributes
;
1985 GLuint NumNativeAddressRegs
;
1986 GLuint NumNativeAluInstructions
;
1987 GLuint NumNativeTexInstructions
;
1988 GLuint NumNativeTexIndirections
;
1991 /** Used by ARB assembly-style programs. Can only be true for vertex
1994 GLboolean IsPositionInvariant
;
1998 /** Fragment program object */
1999 struct gl_fragment_program
2001 struct gl_program Base
; /**< base class */
2002 GLboolean UsesKill
; /**< shader uses KIL instruction */
2003 GLboolean OriginUpperLeft
;
2004 GLboolean PixelCenterInteger
;
2005 enum gl_frag_depth_layout FragDepthLayout
;
2008 * GLSL interpolation qualifier associated with each fragment shader input.
2009 * For inputs that do not have an interpolation qualifier specified in
2010 * GLSL, the value is INTERP_MODE_NONE.
2012 enum glsl_interp_mode InterpQualifier
[VARYING_SLOT_MAX
];
2015 * Bitfield indicating, for each fragment shader input, 1 if that input
2016 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2018 GLbitfield64 IsCentroid
;
2021 * Bitfield indicating, for each fragment shader input, 1 if that input
2022 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2024 GLbitfield64 IsSample
;
2028 /** Compute program object */
2029 struct gl_compute_program
2031 struct gl_program Base
; /**< base class */
2034 * Size specified using local_size_{x,y,z}.
2036 unsigned LocalSize
[3];
2039 * Size of shared variables accessed by the compute shader.
2041 unsigned SharedSize
;
2046 * State common to vertex and fragment programs.
2048 struct gl_program_state
2050 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2051 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2056 * Context state for vertex programs.
2058 struct gl_vertex_program_state
2060 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2061 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2062 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2063 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2064 /** Computed two sided lighting for fixed function/programs. */
2065 GLboolean _TwoSideEnabled
;
2066 struct gl_program
*Current
; /**< User-bound vertex program */
2068 /** Currently enabled and valid vertex program (including internal
2069 * programs, user-defined vertex programs and GLSL vertex shaders).
2070 * This is the program we must use when rendering.
2072 struct gl_program
*_Current
;
2074 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2076 /** Should fixed-function T&L be implemented with a vertex prog? */
2077 GLboolean _MaintainTnlProgram
;
2079 /** Program to emulate fixed-function T&L (see above) */
2080 struct gl_program
*_TnlProgram
;
2082 /** Cache of fixed-function programs */
2083 struct gl_program_cache
*Cache
;
2085 GLboolean _Overriden
;
2089 * Context state for tessellation control programs.
2091 struct gl_tess_ctrl_program_state
2093 /** Currently bound and valid shader. */
2094 struct gl_program
*_Current
;
2096 GLint patch_vertices
;
2097 GLfloat patch_default_outer_level
[4];
2098 GLfloat patch_default_inner_level
[2];
2102 * Context state for tessellation evaluation programs.
2104 struct gl_tess_eval_program_state
2106 /** Currently bound and valid shader. */
2107 struct gl_program
*_Current
;
2111 * Context state for geometry programs.
2113 struct gl_geometry_program_state
2115 /** Currently enabled and valid program (including internal programs
2116 * and compiled shader programs).
2118 struct gl_program
*_Current
;
2122 * Context state for fragment programs.
2124 struct gl_fragment_program_state
2126 GLboolean Enabled
; /**< User-set fragment program enable flag */
2127 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2128 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2130 /** Currently enabled and valid fragment program (including internal
2131 * programs, user-defined fragment programs and GLSL fragment shaders).
2132 * This is the program we must use when rendering.
2134 struct gl_fragment_program
*_Current
;
2136 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2138 /** Should fixed-function texturing be implemented with a fragment prog? */
2139 GLboolean _MaintainTexEnvProgram
;
2141 /** Program to emulate fixed-function texture env/combine (see above) */
2142 struct gl_fragment_program
*_TexEnvProgram
;
2144 /** Cache of fixed-function programs */
2145 struct gl_program_cache
*Cache
;
2150 * Context state for compute programs.
2152 struct gl_compute_program_state
2154 /** Currently enabled and valid program (including internal programs
2155 * and compiled shader programs).
2157 struct gl_compute_program
*_Current
;
2162 * ATI_fragment_shader runtime state
2165 struct atifs_instruction
;
2166 struct atifs_setupinst
;
2169 * ATI fragment shader
2171 struct ati_fragment_shader
2175 struct atifs_instruction
*Instructions
[2];
2176 struct atifs_setupinst
*SetupInst
[2];
2177 GLfloat Constants
[8][4];
2178 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2179 GLubyte numArithInstr
[2];
2180 GLubyte regsAssigned
[2];
2181 GLubyte NumPasses
; /**< 1 or 2 */
2183 GLubyte last_optype
;
2184 GLboolean interpinp1
;
2187 struct gl_program
*Program
;
2191 * Context state for GL_ATI_fragment_shader
2193 struct gl_ati_fragment_shader_state
2196 GLboolean _Enabled
; /**< enabled and valid shader? */
2197 GLboolean Compiling
;
2198 GLfloat GlobalConstants
[8][4];
2199 struct ati_fragment_shader
*Current
;
2203 * Shader subroutine function definition
2205 struct gl_subroutine_function
2209 int num_compat_types
;
2210 const struct glsl_type
**types
;
2214 * Shader information needed by both gl_shader and gl_linked shader.
2216 struct gl_shader_info
2218 bool uses_builtin_functions
;
2219 bool uses_gl_fragcoord
;
2220 bool redeclares_gl_fragcoord
;
2221 bool ARB_fragment_coord_conventions_enable
;
2224 * Fragment shader state from GLSL 1.50 layout qualifiers.
2226 bool origin_upper_left
;
2227 bool pixel_center_integer
;
2230 /** Global xfb_stride out qualifier if any */
2231 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2232 } TransformFeedback
;
2235 * Tessellation Control shader state from layout qualifiers.
2239 * 0 - vertices not declared in shader, or
2240 * 1 .. GL_MAX_PATCH_VERTICES
2246 * Tessellation Evaluation shader state from layout qualifiers.
2250 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2253 GLenum PrimitiveMode
;
2255 * GL_EQUAL, GL_FRACTIONAL_ODD, GL_FRACTIONAL_EVEN, or 0 if it's not set
2260 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2264 * 1, 0, or -1 if it's not set in this shader.
2270 * Geometry shader state from GLSL 1.50 layout qualifiers.
2275 * 0 - Invocations count not declared in shader, or
2276 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2280 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2281 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2286 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2287 * it's not set in this shader.
2293 * Whether early fragment tests are enabled as defined by
2294 * ARB_shader_image_load_store.
2296 bool EarlyFragmentTests
;
2299 * A bitmask of gl_advanced_blend_mode values
2301 GLbitfield BlendSupport
;
2304 * Compute shader state from ARB_compute_shader and
2305 * ARB_compute_variable_group_size layout qualifiers.
2309 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2310 * it's not set in this shader.
2312 unsigned LocalSize
[3];
2315 * Whether a variable work group size has been specified as defined by
2316 * ARB_compute_variable_group_size.
2318 bool LocalSizeVariable
;
2323 * A linked GLSL shader object.
2325 struct gl_linked_shader
2327 gl_shader_stage Stage
;
2329 struct gl_program
*Program
; /**< Post-compile assembly code */
2332 * \name Sampler tracking
2334 * \note Each of these fields is only set post-linking.
2337 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2338 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2339 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2343 * Map from sampler unit to texture unit (set by glUniform1i())
2345 * A sampler unit is associated with each sampler uniform by the linker.
2346 * The sampler unit associated with each uniform is stored in the
2347 * \c gl_uniform_storage::sampler field.
2349 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2350 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2351 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2354 * Number of default uniform block components used by this shader.
2356 * This field is only set post-linking.
2358 unsigned num_uniform_components
;
2361 * Number of combined uniform components used by this shader.
2363 * This field is only set post-linking. It is the sum of the uniform block
2364 * sizes divided by sizeof(float), and num_uniform_compoennts.
2366 unsigned num_combined_uniform_components
;
2368 unsigned NumUniformBlocks
;
2369 struct gl_uniform_block
**UniformBlocks
;
2371 unsigned NumShaderStorageBlocks
;
2372 struct gl_uniform_block
**ShaderStorageBlocks
;
2374 struct exec_list
*ir
;
2375 struct exec_list
*packed_varyings
;
2376 struct exec_list
*fragdata_arrays
;
2377 struct glsl_symbol_table
*symbols
;
2380 * Map from image uniform index to image unit (set by glUniform1i())
2382 * An image uniform index is associated with each image uniform by
2383 * the linker. The image index associated with each uniform is
2384 * stored in the \c gl_uniform_storage::image field.
2386 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2389 * Access qualifier specified in the shader for each image uniform
2390 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2393 * It may be different, though only more strict than the value of
2394 * \c gl_image_unit::Access for the corresponding image unit.
2396 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2399 * Number of image uniforms defined in the shader. It specifies
2400 * the number of valid elements in the \c ImageUnits and \c
2401 * ImageAccess arrays above.
2405 struct gl_active_atomic_buffer
**AtomicBuffers
;
2406 unsigned NumAtomicBuffers
;
2409 * Number of types for subroutine uniforms.
2411 GLuint NumSubroutineUniformTypes
;
2414 * Subroutine uniform remap table
2415 * based on the program level uniform remap table.
2417 GLuint NumSubroutineUniforms
; /* non-sparse total */
2418 GLuint NumSubroutineUniformRemapTable
;
2419 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
2422 * Num of subroutine functions for this stage
2423 * and storage for them.
2425 GLuint NumSubroutineFunctions
;
2426 GLuint MaxSubroutineFunctionIndex
;
2427 struct gl_subroutine_function
*SubroutineFunctions
;
2429 struct gl_shader_info info
;
2432 static inline GLbitfield
gl_external_samplers(struct gl_linked_shader
*shader
)
2434 GLbitfield external_samplers
= 0;
2435 GLbitfield mask
= shader
->active_samplers
;
2438 int idx
= u_bit_scan(&mask
);
2439 if (shader
->SamplerTargets
[idx
] == TEXTURE_EXTERNAL_INDEX
)
2440 external_samplers
|= (1 << idx
);
2443 return external_samplers
;
2447 * A GLSL shader object.
2451 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2452 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2453 * Must be the first field.
2456 gl_shader_stage Stage
;
2457 GLuint Name
; /**< AKA the handle */
2458 GLint RefCount
; /**< Reference count */
2459 GLchar
*Label
; /**< GL_KHR_debug */
2460 GLboolean DeletePending
;
2461 GLboolean CompileStatus
;
2462 bool IsES
; /**< True if this shader uses GLSL ES */
2464 GLuint SourceChecksum
; /**< for debug/logging purposes */
2465 const GLchar
*Source
; /**< Source code string */
2469 unsigned Version
; /**< GLSL version used for linking */
2471 struct exec_list
*ir
;
2472 struct glsl_symbol_table
*symbols
;
2474 struct gl_shader_info info
;
2478 struct gl_uniform_buffer_variable
2483 * Name of the uniform as seen by glGetUniformIndices.
2485 * glGetUniformIndices requires that the block instance index \b not be
2486 * present in the name of queried uniforms.
2489 * \c gl_uniform_buffer_variable::IndexName and
2490 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2494 const struct glsl_type
*Type
;
2495 unsigned int Offset
;
2500 enum gl_uniform_block_packing
2509 struct gl_uniform_block
2511 /** Declared name of the uniform block */
2514 /** Array of supplemental information about UBO ir_variables. */
2515 struct gl_uniform_buffer_variable
*Uniforms
;
2519 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2520 * with glBindBufferBase to bind a buffer object to this uniform block. When
2521 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2526 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2527 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2529 GLuint UniformBufferSize
;
2531 /** Stages that reference this block */
2535 * Layout specified in the shader
2537 * This isn't accessible through the API, but it is used while
2538 * cross-validating uniform blocks.
2540 enum gl_uniform_block_packing _Packing
;
2541 GLboolean _RowMajor
;
2545 * Structure that represents a reference to an atomic buffer from some
2548 struct gl_active_atomic_buffer
2550 /** Uniform indices of the atomic counters declared within it. */
2554 /** Binding point index associated with it. */
2557 /** Minimum reasonable size it is expected to have. */
2560 /** Shader stages making use of it. */
2561 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2565 * Data container for shader queries. This holds only the minimal
2566 * amount of required information for resource queries to work.
2568 struct gl_shader_variable
2571 * Declared type of the variable
2573 const struct glsl_type
*type
;
2576 * If the variable is in an interface block, this is the type of the block.
2578 const struct glsl_type
*interface_type
;
2581 * For variables inside structs (possibly recursively), this is the
2582 * outermost struct type.
2584 const struct glsl_type
*outermost_struct_type
;
2587 * Declared name of the variable
2592 * Storage location of the base of this variable
2594 * The precise meaning of this field depends on the nature of the variable.
2596 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2597 * - Vertex shader output: one of the values from \c gl_varying_slot.
2598 * - Geometry shader input: one of the values from \c gl_varying_slot.
2599 * - Geometry shader output: one of the values from \c gl_varying_slot.
2600 * - Fragment shader input: one of the values from \c gl_varying_slot.
2601 * - Fragment shader output: one of the values from \c gl_frag_result.
2602 * - Uniforms: Per-stage uniform slot number for default uniform block.
2603 * - Uniforms: Index within the uniform block definition for UBO members.
2604 * - Non-UBO Uniforms: explicit location until linking then reused to
2605 * store uniform slot number.
2606 * - Other: This field is not currently used.
2608 * If the variable is a uniform, shader input, or shader output, and the
2609 * slot has not been assigned, the value will be -1.
2614 * Specifies the first component the variable is stored in as per
2615 * ARB_enhanced_layouts.
2617 unsigned component
:2;
2620 * Output index for dual source blending.
2623 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2629 * Specifies whether a shader input/output is per-patch in tessellation
2635 * Storage class of the variable.
2637 * \sa (n)ir_variable_mode
2642 * Interpolation mode for shader inputs / outputs
2644 * \sa glsl_interp_mode
2646 unsigned interpolation
:2;
2649 * Was the location explicitly set in the shader?
2651 * If the location is explicitly set in the shader, it \b cannot be changed
2652 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2655 unsigned explicit_location
:1;
2658 * Precision qualifier.
2660 unsigned precision
:2;
2664 * Active resource in a gl_shader_program
2666 struct gl_program_resource
2668 GLenum Type
; /** Program interface type. */
2669 const void *Data
; /** Pointer to resource associated data structure. */
2670 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2674 * A GLSL program object.
2675 * Basically a linked collection of vertex and fragment shaders.
2677 struct gl_shader_program
2679 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2680 GLuint Name
; /**< aka handle or ID */
2681 GLchar
*Label
; /**< GL_KHR_debug */
2682 GLint RefCount
; /**< Reference count */
2683 GLboolean DeletePending
;
2686 * Is the application intending to glGetProgramBinary this program?
2688 GLboolean BinaryRetreivableHint
;
2691 * Indicates whether program can be bound for individual pipeline stages
2692 * using UseProgramStages after it is next linked.
2694 GLboolean SeparateShader
;
2696 GLuint NumShaders
; /**< number of attached shaders */
2697 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2700 * User-defined attribute bindings
2702 * These are set via \c glBindAttribLocation and are used to direct the
2703 * GLSL linker. These are \b not the values used in the compiled shader,
2704 * and they are \b not the values returned by \c glGetAttribLocation.
2706 struct string_to_uint_map
*AttributeBindings
;
2709 * User-defined fragment data bindings
2711 * These are set via \c glBindFragDataLocation and are used to direct the
2712 * GLSL linker. These are \b not the values used in the compiled shader,
2713 * and they are \b not the values returned by \c glGetFragDataLocation.
2715 struct string_to_uint_map
*FragDataBindings
;
2716 struct string_to_uint_map
*FragDataIndexBindings
;
2719 * Transform feedback varyings last specified by
2720 * glTransformFeedbackVaryings().
2722 * For the current set of transform feedback varyings used for transform
2723 * feedback output, see LinkedTransformFeedback.
2727 /** Global xfb_stride out qualifier if any */
2728 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2730 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2731 } TransformFeedback
;
2733 /** Post-link transform feedback info. */
2734 struct gl_transform_feedback_info LinkedTransformFeedback
;
2736 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2737 enum gl_frag_depth_layout FragDepthLayout
;
2740 * Tessellation Evaluation shader state from layout qualifiers.
2744 * True if gl_ClipDistance is written to. Copied into
2745 * gl_program by _mesa_copy_linked_program_data().
2747 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2748 0 if not present. */
2749 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2750 0 if not present. */
2754 * Geometry shader state - copied into gl_program by
2755 * _mesa_copy_linked_program_data().
2761 * True if gl_ClipDistance is written to. Copied into
2762 * gl_program by _mesa_copy_linked_program_data().
2764 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2765 0 if not present. */
2766 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2767 0 if not present. */
2768 bool UsesEndPrimitive
;
2772 /** Vertex shader state */
2775 * True if gl_ClipDistance is written to. Copied into gl_program
2776 * by _mesa_copy_linked_program_data().
2778 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2779 0 if not present. */
2780 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2781 0 if not present. */
2785 * Compute shader state - copied into gl_compute_program by
2786 * _mesa_copy_linked_program_data().
2790 * If this shader contains a compute stage, size specified using
2791 * local_size_{x,y,z}. Otherwise undefined.
2793 unsigned LocalSize
[3];
2795 * Size of shared variables accessed by the compute shader.
2797 unsigned SharedSize
;
2800 * Whether a variable work group size has been specified.
2802 bool LocalSizeVariable
;
2805 /* post-link info: */
2806 unsigned NumUniformStorage
;
2807 unsigned NumHiddenUniforms
;
2808 struct gl_uniform_storage
*UniformStorage
;
2811 * Mapping from GL uniform locations returned by \c glUniformLocation to
2812 * UniformStorage entries. Arrays will have multiple contiguous slots
2813 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2815 unsigned NumUniformRemapTable
;
2816 struct gl_uniform_storage
**UniformRemapTable
;
2819 * Sometimes there are empty slots left over in UniformRemapTable after we
2820 * allocate slots to explicit locations. This list stores the blocks of
2821 * continuous empty slots inside UniformRemapTable.
2823 struct exec_list EmptyUniformLocations
;
2826 * Size of the gl_ClipDistance array that is output from the last pipeline
2827 * stage before the fragment shader.
2829 unsigned LastClipDistanceArraySize
;
2830 unsigned LastCullDistanceArraySize
;
2832 unsigned NumUniformBlocks
;
2833 struct gl_uniform_block
*UniformBlocks
;
2835 unsigned NumShaderStorageBlocks
;
2836 struct gl_uniform_block
*ShaderStorageBlocks
;
2839 * Map of active uniform names to locations
2841 * Maps any active uniform that is not an array element to a location.
2842 * Each active uniform, including individual structure members will appear
2843 * in this map. This roughly corresponds to the set of names that would be
2844 * enumerated by \c glGetActiveUniform.
2846 struct string_to_uint_map
*UniformHash
;
2848 struct gl_active_atomic_buffer
*AtomicBuffers
;
2849 unsigned NumAtomicBuffers
;
2851 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2852 GLboolean Validated
;
2853 GLboolean _Used
; /**< Ever used for drawing? */
2854 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2857 unsigned Version
; /**< GLSL version used for linking */
2858 bool IsES
; /**< True if this program uses GLSL ES */
2861 * Per-stage shaders resulting from the first stage of linking.
2863 * Set of linked shaders for this program. The array is accessed using the
2864 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2867 struct gl_linked_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2869 /** List of all active resources after linking. */
2870 struct gl_program_resource
*ProgramResourceList
;
2871 unsigned NumProgramResourceList
;
2873 /* True if any of the fragment shaders attached to this program use:
2874 * #extension ARB_fragment_coord_conventions: enable
2876 GLboolean ARB_fragment_coord_conventions_enable
;
2880 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2881 #define GLSL_LOG 0x2 /**< Write shaders to files */
2882 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2883 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2884 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2885 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2886 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2887 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2888 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2889 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2893 * Context state for GLSL vertex/fragment shaders.
2894 * Extended to support pipeline object
2896 struct gl_pipeline_object
2898 /** Name of the pipeline object as received from glGenProgramPipelines.
2899 * It would be 0 for shaders without separate shader objects.
2907 GLchar
*Label
; /**< GL_KHR_debug */
2910 * Programs used for rendering
2912 * There is a separate program set for each shader stage.
2914 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2916 struct gl_shader_program
*_CurrentFragmentProgram
;
2919 * Program used by glUniform calls.
2921 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2923 struct gl_shader_program
*ActiveProgram
;
2925 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2927 GLboolean EverBound
; /**< Has the pipeline object been created */
2929 GLboolean Validated
; /**< Pipeline Validation status */
2935 * Context state for GLSL pipeline shaders.
2937 struct gl_pipeline_shader_state
2939 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2940 struct gl_pipeline_object
*Current
;
2942 /* Default Object to ensure that _Shader is never NULL */
2943 struct gl_pipeline_object
*Default
;
2945 /** Pipeline objects */
2946 struct _mesa_HashTable
*Objects
;
2950 * Compiler options for a single GLSL shaders type
2952 struct gl_shader_compiler_options
2954 /** Driver-selectable options: */
2955 GLboolean EmitNoLoops
;
2956 GLboolean EmitNoFunctions
;
2957 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2958 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2959 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2960 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2961 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
2962 * gl_CullDistance together from
2963 * float[8] to vec4[2]
2967 * \name Forms of indirect addressing the driver cannot do.
2970 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2971 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2972 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2973 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2974 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
2977 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2978 GLuint MaxUnrollIterations
;
2981 * Optimize code for array of structures backends.
2983 * This is a proxy for:
2984 * - preferring DP4 instructions (rather than MUL/MAD) for
2985 * matrix * vector operations, such as position transformation.
2987 GLboolean OptimizeForAOS
;
2989 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
2991 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
2992 GLboolean ClampBlockIndicesToArrayBounds
;
2994 GLboolean LowerShaderSharedVariables
; /**< Lower compute shader shared
2995 * variable access to intrinsics. */
2997 const struct nir_shader_compiler_options
*NirOptions
;
3002 * Occlusion/timer query object.
3004 struct gl_query_object
3006 GLenum Target
; /**< The query target, when active */
3007 GLuint Id
; /**< hash table ID/name */
3008 GLchar
*Label
; /**< GL_KHR_debug */
3009 GLuint64EXT Result
; /**< the counter */
3010 GLboolean Active
; /**< inside Begin/EndQuery */
3011 GLboolean Ready
; /**< result is ready? */
3012 GLboolean EverBound
;/**< has query object ever been bound */
3013 GLuint Stream
; /**< The stream */
3018 * Context state for query objects.
3020 struct gl_query_state
3022 struct _mesa_HashTable
*QueryObjects
;
3023 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
3024 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
3026 /** GL_NV_conditional_render */
3027 struct gl_query_object
*CondRenderQuery
;
3029 /** GL_EXT_transform_feedback */
3030 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
3031 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
3033 /** GL_ARB_timer_query */
3034 struct gl_query_object
*TimeElapsed
;
3036 /** GL_ARB_pipeline_statistics_query */
3037 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3039 GLenum CondRenderMode
;
3043 /** Sync object state */
3044 struct gl_sync_object
3046 GLenum Type
; /**< GL_SYNC_FENCE */
3047 GLuint Name
; /**< Fence name */
3048 GLchar
*Label
; /**< GL_KHR_debug */
3049 GLint RefCount
; /**< Reference count */
3050 GLboolean DeletePending
; /**< Object was deleted while there were still
3051 * live references (e.g., sync not yet finished)
3053 GLenum SyncCondition
;
3054 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3055 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3060 * State which can be shared by multiple contexts:
3062 struct gl_shared_state
3064 mtx_t Mutex
; /**< for thread safety */
3065 GLint RefCount
; /**< Reference count */
3066 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3067 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3068 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3070 /** Default texture objects (shared by all texture units) */
3071 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3073 /** Fallback texture used when a bound texture is incomplete */
3074 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3077 * \name Thread safety and statechange notification for texture
3080 * \todo Improve the granularity of locking.
3083 mtx_t TexMutex
; /**< texobj thread safety */
3084 GLuint TextureStateStamp
; /**< state notification for shared tex */
3087 /** Default buffer object for vertex arrays that aren't in VBOs */
3088 struct gl_buffer_object
*NullBufferObj
;
3091 * \name Vertex/geometry/fragment programs
3094 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3095 struct gl_program
*DefaultVertexProgram
;
3096 struct gl_fragment_program
*DefaultFragmentProgram
;
3099 /* GL_ATI_fragment_shader */
3100 struct _mesa_HashTable
*ATIShaders
;
3101 struct ati_fragment_shader
*DefaultFragmentShader
;
3103 struct _mesa_HashTable
*BufferObjects
;
3105 /** Table of both gl_shader and gl_shader_program objects */
3106 struct _mesa_HashTable
*ShaderObjects
;
3108 /* GL_EXT_framebuffer_object */
3109 struct _mesa_HashTable
*RenderBuffers
;
3110 struct _mesa_HashTable
*FrameBuffers
;
3113 struct set
*SyncObjects
;
3115 /** GL_ARB_sampler_objects */
3116 struct _mesa_HashTable
*SamplerObjects
;
3119 * Some context in this share group was affected by a GPU reset
3121 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3122 * been affected by a GPU reset must also return
3123 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3125 * Once this field becomes true, it is never reset to false.
3127 bool ShareGroupReset
;
3133 * Renderbuffers represent drawing surfaces such as color, depth and/or
3134 * stencil. A framebuffer object has a set of renderbuffers.
3135 * Drivers will typically derive subclasses of this type.
3137 struct gl_renderbuffer
3139 mtx_t Mutex
; /**< for thread safety */
3140 GLuint ClassID
; /**< Useful for drivers */
3142 GLchar
*Label
; /**< GL_KHR_debug */
3144 GLuint Width
, Height
;
3146 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3147 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3149 * True for renderbuffers that wrap textures, giving the driver a chance to
3150 * flush render caches through the FinishRenderTexture hook.
3152 * Drivers may also set this on renderbuffers other than those generated by
3153 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3154 * called without a rb->TexImage.
3156 GLboolean NeedsFinishRenderTexture
;
3158 GLenum InternalFormat
; /**< The user-specified format */
3159 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3160 GL_STENCIL_INDEX. */
3161 mesa_format Format
; /**< The actual renderbuffer memory format */
3163 * Pointer to the texture image if this renderbuffer wraps a texture,
3166 * Note that the reference on the gl_texture_object containing this
3167 * TexImage is held by the gl_renderbuffer_attachment.
3169 struct gl_texture_image
*TexImage
;
3171 /** Delete this renderbuffer */
3172 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3174 /** Allocate new storage for this renderbuffer */
3175 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3176 struct gl_renderbuffer
*rb
,
3177 GLenum internalFormat
,
3178 GLuint width
, GLuint height
);
3183 * A renderbuffer attachment points to either a texture object (and specifies
3184 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3186 struct gl_renderbuffer_attachment
3188 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3192 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3193 * application supplied renderbuffer object.
3195 struct gl_renderbuffer
*Renderbuffer
;
3198 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3199 * supplied texture object.
3201 struct gl_texture_object
*Texture
;
3202 GLuint TextureLevel
; /**< Attached mipmap level. */
3203 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3204 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3205 * and 2D array textures */
3211 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3212 * In C++ terms, think of this as a base class from which device drivers
3213 * will make derived classes.
3215 struct gl_framebuffer
3217 mtx_t Mutex
; /**< for thread safety */
3219 * If zero, this is a window system framebuffer. If non-zero, this
3220 * is a FBO framebuffer; note that for some devices (i.e. those with
3221 * a natural pixel coordinate system for FBOs that differs from the
3222 * OpenGL/Mesa coordinate system), this means that the viewport,
3223 * polygon face orientation, and polygon stipple will have to be inverted.
3228 GLchar
*Label
; /**< GL_KHR_debug */
3230 GLboolean DeletePending
;
3233 * The framebuffer's visual. Immutable if this is a window system buffer.
3234 * Computed from attachments if user-made FBO.
3236 struct gl_config Visual
;
3239 * Size of frame buffer in pixels. If there are no attachments, then both
3242 GLuint Width
, Height
;
3245 * In the case that the framebuffer has no attachment (i.e.
3246 * GL_ARB_framebuffer_no_attachments) then the geometry of
3247 * the framebuffer is specified by the default values.
3250 GLuint Width
, Height
, Layers
, NumSamples
;
3251 GLboolean FixedSampleLocations
;
3252 /* Derived from NumSamples by the driver so that it can choose a valid
3253 * value for the hardware.
3258 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3259 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3260 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3267 /** \name Derived Z buffer stuff */
3269 GLuint _DepthMax
; /**< Max depth buffer value */
3270 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3271 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3274 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3277 /** Whether one of Attachment has Type != GL_NONE
3278 * NOTE: the values for Width and Height are set to 0 in case of having
3279 * no attachments, a backend driver supporting the extension
3280 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3281 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3282 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3283 * _Ymax do NOT take into account _HasAttachments being false). To get the
3284 * geometry of the framebuffer, the helper functions
3285 * _mesa_geometric_width(),
3286 * _mesa_geometric_height(),
3287 * _mesa_geometric_samples() and
3288 * _mesa_geometric_layers()
3289 * are available that check _HasAttachments.
3291 bool _HasAttachments
;
3293 GLbitfield _IntegerBuffers
; /**< Which color buffers are integer valued */
3295 /* ARB_color_buffer_float */
3296 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3297 GLboolean _HasSNormOrFloatColorBuffer
;
3300 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3301 * is not layered. For cube maps and cube map arrays, each cube face
3302 * counts as a layer. As the case for Width, Height a backend driver
3303 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3304 * in the case that _HasAttachments is false
3306 GLuint MaxNumLayers
;
3308 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3309 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3311 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3312 * attribute group and GL_PIXEL attribute group, respectively.
3314 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3315 GLenum ColorReadBuffer
;
3317 /** Computed from ColorDraw/ReadBuffer above */
3318 GLuint _NumColorDrawBuffers
;
3319 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3320 GLint _ColorReadBufferIndex
; /* -1 = None */
3321 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3322 struct gl_renderbuffer
*_ColorReadBuffer
;
3324 /** Delete this framebuffer */
3325 void (*Delete
)(struct gl_framebuffer
*fb
);
3330 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3334 GLushort RangeMin
; /**< min value exponent */
3335 GLushort RangeMax
; /**< max value exponent */
3336 GLushort Precision
; /**< number of mantissa bits */
3341 * Limits for vertex, geometry and fragment programs/shaders.
3343 struct gl_program_constants
3345 /* logical limits */
3346 GLuint MaxInstructions
;
3347 GLuint MaxAluInstructions
;
3348 GLuint MaxTexInstructions
;
3349 GLuint MaxTexIndirections
;
3352 GLuint MaxAddressRegs
;
3353 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3354 GLuint MaxParameters
;
3355 GLuint MaxLocalParams
;
3356 GLuint MaxEnvParams
;
3357 /* native/hardware limits */
3358 GLuint MaxNativeInstructions
;
3359 GLuint MaxNativeAluInstructions
;
3360 GLuint MaxNativeTexInstructions
;
3361 GLuint MaxNativeTexIndirections
;
3362 GLuint MaxNativeAttribs
;
3363 GLuint MaxNativeTemps
;
3364 GLuint MaxNativeAddressRegs
;
3365 GLuint MaxNativeParameters
;
3367 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3370 * \name Per-stage input / output limits
3372 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3373 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3374 * ES). This is stored as \c gl_constants::MaxVarying.
3376 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3377 * variables. Each stage as a certain number of outputs that it can feed
3378 * to the next stage and a certain number inputs that it can consume from
3379 * the previous stage.
3381 * Vertex shader inputs do not participate this in this accounting.
3382 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3384 * Fragment shader outputs do not participate this in this accounting.
3385 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3388 GLuint MaxInputComponents
;
3389 GLuint MaxOutputComponents
;
3392 /* ES 2.0 and GL_ARB_ES2_compatibility */
3393 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3394 struct gl_precision LowInt
, MediumInt
, HighInt
;
3395 /* GL_ARB_uniform_buffer_object */
3396 GLuint MaxUniformBlocks
;
3397 GLuint MaxCombinedUniformComponents
;
3398 GLuint MaxTextureImageUnits
;
3400 /* GL_ARB_shader_atomic_counters */
3401 GLuint MaxAtomicBuffers
;
3402 GLuint MaxAtomicCounters
;
3404 /* GL_ARB_shader_image_load_store */
3405 GLuint MaxImageUniforms
;
3407 /* GL_ARB_shader_storage_buffer_object */
3408 GLuint MaxShaderStorageBlocks
;
3413 * Constants which may be overridden by device driver during context creation
3414 * but are never changed after that.
3418 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3419 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3420 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3421 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3422 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3423 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3424 GLuint MaxTextureCoordUnits
;
3425 GLuint MaxCombinedTextureImageUnits
;
3426 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3427 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3428 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3429 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3431 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3433 GLuint MaxArrayLockSize
;
3437 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3438 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3439 GLfloat PointSizeGranularity
;
3440 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3441 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3442 GLfloat LineWidthGranularity
;
3444 GLuint MaxClipPlanes
;
3446 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3447 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3449 GLuint MaxViewportWidth
, MaxViewportHeight
;
3450 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3451 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3455 } ViewportBounds
; /**< GL_ARB_viewport_array */
3456 GLuint MaxWindowRectangles
; /**< GL_EXT_window_rectangles */
3458 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3459 GLuint MaxProgramMatrices
;
3460 GLuint MaxProgramMatrixStackDepth
;
3463 GLuint SamplesPassed
;
3466 GLuint PrimitivesGenerated
;
3467 GLuint PrimitivesWritten
;
3468 GLuint VerticesSubmitted
;
3469 GLuint PrimitivesSubmitted
;
3470 GLuint VsInvocations
;
3472 GLuint TessInvocations
;
3473 GLuint GsInvocations
;
3474 GLuint GsPrimitives
;
3475 GLuint FsInvocations
;
3476 GLuint ComputeInvocations
;
3477 GLuint ClInPrimitives
;
3478 GLuint ClOutPrimitives
;
3481 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3483 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3484 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3485 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3488 * GL_ARB_framebuffer_no_attachments
3490 GLuint MaxFramebufferWidth
;
3491 GLuint MaxFramebufferHeight
;
3492 GLuint MaxFramebufferLayers
;
3493 GLuint MaxFramebufferSamples
;
3495 /** Number of varying vectors between any two shader stages. */
3499 * GL_ARB_uniform_buffer_object
3501 GLuint MaxCombinedUniformBlocks
;
3502 GLuint MaxUniformBufferBindings
;
3503 GLuint MaxUniformBlockSize
;
3504 GLuint UniformBufferOffsetAlignment
;
3508 * GL_ARB_shader_storage_buffer_object
3510 GLuint MaxCombinedShaderStorageBlocks
;
3511 GLuint MaxShaderStorageBufferBindings
;
3512 GLuint MaxShaderStorageBlockSize
;
3513 GLuint ShaderStorageBufferOffsetAlignment
;
3517 * GL_ARB_explicit_uniform_location
3519 GLuint MaxUserAssignableUniformLocations
;
3521 /** geometry shader */
3522 GLuint MaxGeometryOutputVertices
;
3523 GLuint MaxGeometryTotalOutputComponents
;
3525 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3528 * Changes default GLSL extension behavior from "error" to "warn". It's out
3529 * of spec, but it can make some apps work that otherwise wouldn't.
3531 GLboolean ForceGLSLExtensionsWarn
;
3534 * If non-zero, forces GLSL shaders to behave as if they began
3535 * with "#version ForceGLSLVersion".
3537 GLuint ForceGLSLVersion
;
3540 * Allow GLSL #extension directives in the middle of shaders.
3542 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3545 * Force uninitialized variables to default to zero.
3547 GLboolean GLSLZeroInit
;
3550 * Does the driver support real 32-bit integers? (Otherwise, integers are
3551 * simulated via floats.)
3553 GLboolean NativeIntegers
;
3556 * Does VertexID count from zero or from base vertex?
3559 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3560 * ignored and need not be set.
3562 bool VertexID_is_zero_based
;
3565 * If the driver supports real 32-bit integers, what integer value should be
3566 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3568 GLuint UniformBooleanTrue
;
3571 * Maximum amount of time, measured in nanseconds, that the server can wait.
3573 GLuint64 MaxServerWaitTimeout
;
3575 /** GL_EXT_provoking_vertex */
3576 GLboolean QuadsFollowProvokingVertexConvention
;
3578 /** GL_ARB_viewport_array */
3579 GLenum LayerAndVPIndexProvokingVertex
;
3581 /** OpenGL version 3.0 */
3582 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3584 /** OpenGL version 3.2 */
3585 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3587 /** OpenGL version 4.4 */
3588 GLuint MaxVertexAttribStride
;
3590 /** GL_EXT_transform_feedback */
3591 GLuint MaxTransformFeedbackBuffers
;
3592 GLuint MaxTransformFeedbackSeparateComponents
;
3593 GLuint MaxTransformFeedbackInterleavedComponents
;
3594 GLuint MaxVertexStreams
;
3596 /** GL_EXT_gpu_shader4 */
3597 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3599 /** GL_ARB_texture_gather */
3600 GLuint MinProgramTextureGatherOffset
;
3601 GLuint MaxProgramTextureGatherOffset
;
3602 GLuint MaxProgramTextureGatherComponents
;
3604 /* GL_ARB_robustness */
3605 GLenum ResetStrategy
;
3607 /* GL_ARB_blend_func_extended */
3608 GLuint MaxDualSourceDrawBuffers
;
3611 * Whether the implementation strips out and ignores texture borders.
3613 * Many GPU hardware implementations don't support rendering with texture
3614 * borders and mipmapped textures. (Note: not static border color, but the
3615 * old 1-pixel border around each edge). Implementations then have to do
3616 * slow fallbacks to be correct, or just ignore the border and be fast but
3617 * wrong. Setting the flag strips the border off of TexImage calls,
3618 * providing "fast but wrong" at significantly reduced driver complexity.
3620 * Texture borders are deprecated in GL 3.0.
3622 GLboolean StripTextureBorder
;
3625 * For drivers which can do a better job at eliminating unused uniforms
3626 * than the GLSL compiler.
3628 * XXX Remove these as soon as a better solution is available.
3630 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3632 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3633 bool GLSLFragCoordIsSysVal
;
3634 bool GLSLFrontFacingIsSysVal
;
3637 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3638 * than passing the transform feedback object to the drawing function.
3640 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3642 /** GL_ARB_map_buffer_alignment */
3643 GLuint MinMapBufferAlignment
;
3646 * Disable varying packing. This is out of spec, but potentially useful
3647 * for older platforms that supports a limited number of texture
3648 * indirections--on these platforms, unpacking the varyings in the fragment
3649 * shader increases the number of texture indirections by 1, which might
3650 * make some shaders not executable at all.
3652 * Drivers that support transform feedback must set this value to GL_FALSE.
3654 GLboolean DisableVaryingPacking
;
3657 * Should meaningful names be generated for compiler temporary variables?
3659 * Generally, it is not useful to have the compiler generate "meaningful"
3660 * names for temporary variables that it creates. This can, however, be a
3661 * useful debugging aid. In Mesa debug builds or release builds when
3662 * MESA_GLSL is set at run-time, meaningful names will be generated.
3663 * Drivers can also force names to be generated by setting this field.
3664 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3665 * vertex shader assembly) is set at run-time.
3667 bool GenerateTemporaryNames
;
3670 * Maximum value supported for an index in DrawElements and friends.
3672 * This must be at least (1ull<<24)-1. The default value is
3675 * \since ES 3.0 or GL_ARB_ES3_compatibility
3676 * \sa _mesa_init_constants
3678 GLuint64 MaxElementIndex
;
3681 * Disable interpretation of line continuations (lines ending with a
3682 * backslash character ('\') in GLSL source.
3684 GLboolean DisableGLSLLineContinuations
;
3686 /** GL_ARB_texture_multisample */
3687 GLint MaxColorTextureSamples
;
3688 GLint MaxDepthTextureSamples
;
3689 GLint MaxIntegerSamples
;
3692 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3693 * samples are laid out in a rectangular grid roughly corresponding to
3694 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3695 * are used to map indices of rectangular grid to sample numbers within
3696 * a pixel. This mapping of indices to sample numbers must be initialized
3697 * by the driver for the target hardware. For example, if we have the 8X
3698 * MSAA sample number layout (sample positions) for XYZ hardware:
3700 * sample indices layout sample number layout
3701 * --------- ---------
3702 * | 0 | 1 | | a | b |
3703 * --------- ---------
3704 * | 2 | 3 | | c | d |
3705 * --------- ---------
3706 * | 4 | 5 | | e | f |
3707 * --------- ---------
3708 * | 6 | 7 | | g | h |
3709 * --------- ---------
3711 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3713 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3715 * SampleMap8x = {a, b, c, d, e, f, g, h};
3717 * Follow the logic for sample counts 2-8.
3719 * For 16x the sample indices layout as a 4x4 grid as follows:
3731 uint8_t SampleMap2x
[2];
3732 uint8_t SampleMap4x
[4];
3733 uint8_t SampleMap8x
[8];
3734 uint8_t SampleMap16x
[16];
3736 /** GL_ARB_shader_atomic_counters */
3737 GLuint MaxAtomicBufferBindings
;
3738 GLuint MaxAtomicBufferSize
;
3739 GLuint MaxCombinedAtomicBuffers
;
3740 GLuint MaxCombinedAtomicCounters
;
3742 /** GL_ARB_vertex_attrib_binding */
3743 GLint MaxVertexAttribRelativeOffset
;
3744 GLint MaxVertexAttribBindings
;
3746 /* GL_ARB_shader_image_load_store */
3747 GLuint MaxImageUnits
;
3748 GLuint MaxCombinedShaderOutputResources
;
3749 GLuint MaxImageSamples
;
3750 GLuint MaxCombinedImageUniforms
;
3752 /** GL_ARB_compute_shader */
3753 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3754 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3755 GLuint MaxComputeWorkGroupInvocations
;
3756 GLuint MaxComputeSharedMemorySize
;
3758 /** GL_ARB_compute_variable_group_size */
3759 GLuint MaxComputeVariableGroupSize
[3]; /* Array of x, y, z dimensions */
3760 GLuint MaxComputeVariableGroupInvocations
;
3762 /** GL_ARB_gpu_shader5 */
3763 GLfloat MinFragmentInterpolationOffset
;
3764 GLfloat MaxFragmentInterpolationOffset
;
3766 GLboolean FakeSWMSAA
;
3768 /** GL_KHR_context_flush_control */
3769 GLenum ContextReleaseBehavior
;
3771 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3773 /** GL_ARB_tessellation_shader */
3774 GLuint MaxPatchVertices
;
3775 GLuint MaxTessGenLevel
;
3776 GLuint MaxTessPatchComponents
;
3777 GLuint MaxTessControlTotalOutputComponents
;
3778 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3779 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3780 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3781 bool PrimitiveRestartForPatches
;
3782 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3783 * gl_LocalInvocationIndex based on
3784 * other builtin variables. */
3786 /** GL_OES_primitive_bounding_box */
3787 bool NoPrimitiveBoundingBoxOutput
;
3792 * Enable flag for each OpenGL extension. Different device drivers will
3793 * enable different extensions at runtime.
3795 struct gl_extensions
3797 GLboolean dummy
; /* don't remove this! */
3798 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3799 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3800 GLboolean ANGLE_texture_compression_dxt
;
3801 GLboolean ARB_ES2_compatibility
;
3802 GLboolean ARB_ES3_compatibility
;
3803 GLboolean ARB_ES3_1_compatibility
;
3804 GLboolean ARB_ES3_2_compatibility
;
3805 GLboolean ARB_arrays_of_arrays
;
3806 GLboolean ARB_base_instance
;
3807 GLboolean ARB_blend_func_extended
;
3808 GLboolean ARB_buffer_storage
;
3809 GLboolean ARB_clear_texture
;
3810 GLboolean ARB_clip_control
;
3811 GLboolean ARB_color_buffer_float
;
3812 GLboolean ARB_compute_shader
;
3813 GLboolean ARB_compute_variable_group_size
;
3814 GLboolean ARB_conditional_render_inverted
;
3815 GLboolean ARB_conservative_depth
;
3816 GLboolean ARB_copy_image
;
3817 GLboolean ARB_cull_distance
;
3818 GLboolean ARB_depth_buffer_float
;
3819 GLboolean ARB_depth_clamp
;
3820 GLboolean ARB_depth_texture
;
3821 GLboolean ARB_derivative_control
;
3822 GLboolean ARB_draw_buffers_blend
;
3823 GLboolean ARB_draw_elements_base_vertex
;
3824 GLboolean ARB_draw_indirect
;
3825 GLboolean ARB_draw_instanced
;
3826 GLboolean ARB_fragment_coord_conventions
;
3827 GLboolean ARB_fragment_layer_viewport
;
3828 GLboolean ARB_fragment_program
;
3829 GLboolean ARB_fragment_program_shadow
;
3830 GLboolean ARB_fragment_shader
;
3831 GLboolean ARB_framebuffer_no_attachments
;
3832 GLboolean ARB_framebuffer_object
;
3833 GLboolean ARB_enhanced_layouts
;
3834 GLboolean ARB_explicit_attrib_location
;
3835 GLboolean ARB_explicit_uniform_location
;
3836 GLboolean ARB_gpu_shader5
;
3837 GLboolean ARB_gpu_shader_fp64
;
3838 GLboolean ARB_half_float_vertex
;
3839 GLboolean ARB_indirect_parameters
;
3840 GLboolean ARB_instanced_arrays
;
3841 GLboolean ARB_internalformat_query
;
3842 GLboolean ARB_internalformat_query2
;
3843 GLboolean ARB_map_buffer_range
;
3844 GLboolean ARB_occlusion_query
;
3845 GLboolean ARB_occlusion_query2
;
3846 GLboolean ARB_pipeline_statistics_query
;
3847 GLboolean ARB_point_sprite
;
3848 GLboolean ARB_query_buffer_object
;
3849 GLboolean ARB_robust_buffer_access_behavior
;
3850 GLboolean ARB_sample_shading
;
3851 GLboolean ARB_seamless_cube_map
;
3852 GLboolean ARB_shader_atomic_counter_ops
;
3853 GLboolean ARB_shader_atomic_counters
;
3854 GLboolean ARB_shader_bit_encoding
;
3855 GLboolean ARB_shader_clock
;
3856 GLboolean ARB_shader_draw_parameters
;
3857 GLboolean ARB_shader_group_vote
;
3858 GLboolean ARB_shader_image_load_store
;
3859 GLboolean ARB_shader_image_size
;
3860 GLboolean ARB_shader_precision
;
3861 GLboolean ARB_shader_stencil_export
;
3862 GLboolean ARB_shader_storage_buffer_object
;
3863 GLboolean ARB_shader_subroutine
;
3864 GLboolean ARB_shader_texture_image_samples
;
3865 GLboolean ARB_shader_texture_lod
;
3866 GLboolean ARB_shader_viewport_layer_array
;
3867 GLboolean ARB_shading_language_packing
;
3868 GLboolean ARB_shading_language_420pack
;
3869 GLboolean ARB_shadow
;
3870 GLboolean ARB_stencil_texturing
;
3872 GLboolean ARB_tessellation_shader
;
3873 GLboolean ARB_texture_border_clamp
;
3874 GLboolean ARB_texture_buffer_object
;
3875 GLboolean ARB_texture_buffer_object_rgb32
;
3876 GLboolean ARB_texture_buffer_range
;
3877 GLboolean ARB_texture_compression_bptc
;
3878 GLboolean ARB_texture_compression_rgtc
;
3879 GLboolean ARB_texture_cube_map
;
3880 GLboolean ARB_texture_cube_map_array
;
3881 GLboolean ARB_texture_env_combine
;
3882 GLboolean ARB_texture_env_crossbar
;
3883 GLboolean ARB_texture_env_dot3
;
3884 GLboolean ARB_texture_float
;
3885 GLboolean ARB_texture_gather
;
3886 GLboolean ARB_texture_mirror_clamp_to_edge
;
3887 GLboolean ARB_texture_multisample
;
3888 GLboolean ARB_texture_non_power_of_two
;
3889 GLboolean ARB_texture_stencil8
;
3890 GLboolean ARB_texture_query_levels
;
3891 GLboolean ARB_texture_query_lod
;
3892 GLboolean ARB_texture_rg
;
3893 GLboolean ARB_texture_rgb10_a2ui
;
3894 GLboolean ARB_texture_view
;
3895 GLboolean ARB_timer_query
;
3896 GLboolean ARB_transform_feedback2
;
3897 GLboolean ARB_transform_feedback3
;
3898 GLboolean ARB_transform_feedback_instanced
;
3899 GLboolean ARB_uniform_buffer_object
;
3900 GLboolean ARB_vertex_attrib_64bit
;
3901 GLboolean ARB_vertex_program
;
3902 GLboolean ARB_vertex_shader
;
3903 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3904 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3905 GLboolean ARB_viewport_array
;
3906 GLboolean EXT_blend_color
;
3907 GLboolean EXT_blend_equation_separate
;
3908 GLboolean EXT_blend_func_separate
;
3909 GLboolean EXT_blend_minmax
;
3910 GLboolean EXT_depth_bounds_test
;
3911 GLboolean EXT_draw_buffers2
;
3912 GLboolean EXT_framebuffer_multisample
;
3913 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3914 GLboolean EXT_framebuffer_sRGB
;
3915 GLboolean EXT_gpu_program_parameters
;
3916 GLboolean EXT_gpu_shader4
;
3917 GLboolean EXT_packed_float
;
3918 GLboolean EXT_pixel_buffer_object
;
3919 GLboolean EXT_point_parameters
;
3920 GLboolean EXT_polygon_offset_clamp
;
3921 GLboolean EXT_provoking_vertex
;
3922 GLboolean EXT_shader_integer_mix
;
3923 GLboolean EXT_shader_samples_identical
;
3924 GLboolean EXT_stencil_two_side
;
3925 GLboolean EXT_texture_array
;
3926 GLboolean EXT_texture_compression_latc
;
3927 GLboolean EXT_texture_compression_s3tc
;
3928 GLboolean EXT_texture_env_dot3
;
3929 GLboolean EXT_texture_filter_anisotropic
;
3930 GLboolean EXT_texture_integer
;
3931 GLboolean EXT_texture_mirror_clamp
;
3932 GLboolean EXT_texture_shared_exponent
;
3933 GLboolean EXT_texture_snorm
;
3934 GLboolean EXT_texture_sRGB
;
3935 GLboolean EXT_texture_sRGB_decode
;
3936 GLboolean EXT_texture_swizzle
;
3937 GLboolean EXT_transform_feedback
;
3938 GLboolean EXT_timer_query
;
3939 GLboolean EXT_vertex_array_bgra
;
3940 GLboolean EXT_window_rectangles
;
3941 GLboolean OES_copy_image
;
3942 GLboolean OES_primitive_bounding_box
;
3943 GLboolean OES_sample_variables
;
3944 GLboolean OES_standard_derivatives
;
3945 GLboolean OES_texture_buffer
;
3946 GLboolean OES_texture_cube_map_array
;
3947 GLboolean OES_viewport_array
;
3948 /* vendor extensions */
3949 GLboolean AMD_performance_monitor
;
3950 GLboolean AMD_pinned_memory
;
3951 GLboolean AMD_seamless_cubemap_per_texture
;
3952 GLboolean AMD_vertex_shader_layer
;
3953 GLboolean AMD_vertex_shader_viewport_index
;
3954 GLboolean ANDROID_extension_pack_es31a
;
3955 GLboolean APPLE_object_purgeable
;
3956 GLboolean ATI_meminfo
;
3957 GLboolean ATI_texture_compression_3dc
;
3958 GLboolean ATI_texture_mirror_once
;
3959 GLboolean ATI_texture_env_combine3
;
3960 GLboolean ATI_fragment_shader
;
3961 GLboolean ATI_separate_stencil
;
3962 GLboolean GREMEDY_string_marker
;
3963 GLboolean INTEL_performance_query
;
3964 GLboolean KHR_blend_equation_advanced
;
3965 GLboolean KHR_blend_equation_advanced_coherent
;
3966 GLboolean KHR_robustness
;
3967 GLboolean KHR_texture_compression_astc_hdr
;
3968 GLboolean KHR_texture_compression_astc_ldr
;
3969 GLboolean KHR_texture_compression_astc_sliced_3d
;
3970 GLboolean MESA_pack_invert
;
3971 GLboolean MESA_shader_framebuffer_fetch
;
3972 GLboolean MESA_shader_framebuffer_fetch_non_coherent
;
3973 GLboolean MESA_shader_integer_functions
;
3974 GLboolean MESA_ycbcr_texture
;
3975 GLboolean NV_conditional_render
;
3976 GLboolean NV_fog_distance
;
3977 GLboolean NV_point_sprite
;
3978 GLboolean NV_primitive_restart
;
3979 GLboolean NV_texture_barrier
;
3980 GLboolean NV_texture_env_combine4
;
3981 GLboolean NV_texture_rectangle
;
3982 GLboolean NV_vdpau_interop
;
3983 GLboolean NVX_gpu_memory_info
;
3984 GLboolean TDFX_texture_compression_FXT1
;
3985 GLboolean OES_EGL_image
;
3986 GLboolean OES_draw_texture
;
3987 GLboolean OES_depth_texture_cube_map
;
3988 GLboolean OES_EGL_image_external
;
3989 GLboolean OES_texture_float
;
3990 GLboolean OES_texture_float_linear
;
3991 GLboolean OES_texture_half_float
;
3992 GLboolean OES_texture_half_float_linear
;
3993 GLboolean OES_compressed_ETC1_RGB8_texture
;
3994 GLboolean OES_geometry_shader
;
3995 GLboolean OES_texture_compression_astc
;
3996 GLboolean extension_sentinel
;
3997 /** The extension string */
3998 const GLubyte
*String
;
3999 /** Number of supported extensions */
4002 * The context version which extension helper functions compare against.
4003 * By default, the value is equal to ctx->Version. This changes to ~0
4004 * while meta is in progress.
4011 * A stack of matrices (projection, modelview, color, texture, etc).
4013 struct gl_matrix_stack
4015 GLmatrix
*Top
; /**< points into Stack */
4016 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
4017 unsigned StackSize
; /**< Number of elements in Stack */
4018 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
4019 GLuint MaxDepth
; /**< size of Stack[] array */
4020 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
4025 * \name Bits for image transfer operations
4026 * \sa __struct gl_contextRec::ImageTransferState.
4029 #define IMAGE_SCALE_BIAS_BIT 0x1
4030 #define IMAGE_SHIFT_OFFSET_BIT 0x2
4031 #define IMAGE_MAP_COLOR_BIT 0x4
4032 #define IMAGE_CLAMP_BIT 0x800
4035 /** Pixel Transfer ops */
4036 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4037 IMAGE_SHIFT_OFFSET_BIT | \
4038 IMAGE_MAP_COLOR_BIT)
4041 * \name Bits to indicate what state has changed.
4044 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4045 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4046 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4047 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4048 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4049 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4050 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4051 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4052 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4053 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4054 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4055 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4056 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4057 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4058 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4059 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4060 #define _NEW_TEXTURE (1u << 16) /**< gl_context::Texture */
4061 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4062 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4063 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4064 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4065 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4066 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4067 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4068 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4069 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4070 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4071 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4072 #define _NEW_BUFFER_OBJECT (1u << 28)
4073 #define _NEW_FRAG_CLAMP (1u << 29)
4074 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4075 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4081 * Composite state flags
4084 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4090 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4100 /* This has to be included here. */
4105 * Display list flags.
4106 * Strictly this is a tnl-private concept, but it doesn't seem
4107 * worthwhile adding a tnl private structure just to hold this one bit
4110 #define DLIST_DANGLING_REFS 0x1
4113 /** Opaque declaration of display list payload data type */
4114 union gl_dlist_node
;
4118 * Provide a location where information about a display list can be
4119 * collected. Could be extended with driverPrivate structures,
4120 * etc. in the future.
4122 struct gl_display_list
4125 GLchar
*Label
; /**< GL_KHR_debug */
4126 GLbitfield Flags
; /**< DLIST_x flags */
4127 /** The dlist commands are in a linked list of nodes */
4128 union gl_dlist_node
*Head
;
4133 * State used during display list compilation and execution.
4135 struct gl_dlist_state
4137 GLuint CallDepth
; /**< Current recursion calling depth */
4139 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4140 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4141 GLuint CurrentPos
; /**< Index into current block of nodes */
4143 GLvertexformat ListVtxfmt
;
4145 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4146 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4148 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4149 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4152 /* State known to have been set by the currently-compiling display
4153 * list. Used to eliminate some redundant state changes.
4161 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4162 * to small enums suitable for use as an array index.
4165 enum mesa_debug_source
{
4166 MESA_DEBUG_SOURCE_API
,
4167 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4168 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4169 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4170 MESA_DEBUG_SOURCE_APPLICATION
,
4171 MESA_DEBUG_SOURCE_OTHER
,
4172 MESA_DEBUG_SOURCE_COUNT
4175 enum mesa_debug_type
{
4176 MESA_DEBUG_TYPE_ERROR
,
4177 MESA_DEBUG_TYPE_DEPRECATED
,
4178 MESA_DEBUG_TYPE_UNDEFINED
,
4179 MESA_DEBUG_TYPE_PORTABILITY
,
4180 MESA_DEBUG_TYPE_PERFORMANCE
,
4181 MESA_DEBUG_TYPE_OTHER
,
4182 MESA_DEBUG_TYPE_MARKER
,
4183 MESA_DEBUG_TYPE_PUSH_GROUP
,
4184 MESA_DEBUG_TYPE_POP_GROUP
,
4185 MESA_DEBUG_TYPE_COUNT
4188 enum mesa_debug_severity
{
4189 MESA_DEBUG_SEVERITY_LOW
,
4190 MESA_DEBUG_SEVERITY_MEDIUM
,
4191 MESA_DEBUG_SEVERITY_HIGH
,
4192 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4193 MESA_DEBUG_SEVERITY_COUNT
4199 * Driver-specific state flags.
4201 * These are or'd with gl_context::NewDriverState to notify a driver about
4202 * a state change. The driver sets the flags at context creation and
4203 * the meaning of the bits set is opaque to core Mesa.
4205 struct gl_driver_flags
4207 /** gl_context::Array::_DrawArrays (vertex array state) */
4210 /** gl_context::TransformFeedback::CurrentObject */
4211 uint64_t NewTransformFeedback
;
4213 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4214 uint64_t NewTransformFeedbackProg
;
4216 /** gl_context::RasterDiscard */
4217 uint64_t NewRasterizerDiscard
;
4220 * gl_context::UniformBufferBindings
4221 * gl_shader_program::UniformBlocks
4223 uint64_t NewUniformBuffer
;
4226 * gl_context::ShaderStorageBufferBindings
4227 * gl_shader_program::ShaderStorageBlocks
4229 uint64_t NewShaderStorageBuffer
;
4231 uint64_t NewTextureBuffer
;
4234 * gl_context::AtomicBufferBindings
4236 uint64_t NewAtomicBuffer
;
4239 * gl_context::ImageUnits
4241 uint64_t NewImageUnits
;
4244 * gl_context::TessCtrlProgram::patch_default_*
4246 uint64_t NewDefaultTessLevels
;
4249 struct gl_uniform_buffer_binding
4251 struct gl_buffer_object
*BufferObject
;
4252 /** Start of uniform block data in the buffer */
4254 /** Size of data allowed to be referenced from the buffer (in bytes) */
4257 * glBindBufferBase() indicates that the Size should be ignored and only
4258 * limited by the current size of the BufferObject.
4260 GLboolean AutomaticSize
;
4263 struct gl_shader_storage_buffer_binding
4265 struct gl_buffer_object
*BufferObject
;
4266 /** Start of shader storage block data in the buffer */
4268 /** Size of data allowed to be referenced from the buffer (in bytes) */
4271 * glBindBufferBase() indicates that the Size should be ignored and only
4272 * limited by the current size of the BufferObject.
4274 GLboolean AutomaticSize
;
4278 * ARB_shader_image_load_store image unit.
4280 struct gl_image_unit
4283 * Texture object bound to this unit.
4285 struct gl_texture_object
*TexObj
;
4288 * Level of the texture object bound to this unit.
4293 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4294 * GL_FALSE if only some specific layer of the texture is bound.
4300 * Layer of the texture object bound to this unit as specified by the
4306 * Layer of the texture object bound to this unit, or zero if the
4307 * whole level is bound.
4312 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4313 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4318 * GL internal format that determines the interpretation of the
4319 * image memory when shader image operations are performed through
4325 * Mesa format corresponding to \c Format.
4327 mesa_format _ActualFormat
;
4332 * Binding point for an atomic counter buffer object.
4334 struct gl_atomic_buffer_binding
4336 struct gl_buffer_object
*BufferObject
;
4342 * Shader subroutines storage
4344 struct gl_subroutine_index_binding
4351 * Mesa rendering context.
4353 * This is the central context data structure for Mesa. Almost all
4354 * OpenGL state is contained in this structure.
4355 * Think of this as a base class from which device drivers will derive
4360 /** State possibly shared with other contexts in the address space */
4361 struct gl_shared_state
*Shared
;
4363 /** \name API function pointer tables */
4367 * The current dispatch table for non-displaylist-saving execution, either
4368 * BeginEnd or OutsideBeginEnd
4370 struct _glapi_table
*Exec
;
4372 * The normal dispatch table for non-displaylist-saving, non-begin/end
4374 struct _glapi_table
*OutsideBeginEnd
;
4375 /** The dispatch table used between glNewList() and glEndList() */
4376 struct _glapi_table
*Save
;
4378 * The dispatch table used between glBegin() and glEnd() (outside of a
4379 * display list). Only valid functions between those two are set, which is
4380 * mostly just the set in a GLvertexformat struct.
4382 struct _glapi_table
*BeginEnd
;
4384 * Dispatch table for when a graphics reset has happened.
4386 struct _glapi_table
*ContextLost
;
4388 * Tracks the current dispatch table out of the 4 above, so that it can be
4389 * re-set on glXMakeCurrent().
4391 struct _glapi_table
*CurrentDispatch
;
4394 struct gl_config Visual
;
4395 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4396 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4397 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4398 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4401 * Device driver function pointer table
4403 struct dd_function_table Driver
;
4405 /** Core/Driver constants */
4406 struct gl_constants Const
;
4408 /** \name The various 4x4 matrix stacks */
4410 struct gl_matrix_stack ModelviewMatrixStack
;
4411 struct gl_matrix_stack ProjectionMatrixStack
;
4412 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4413 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4414 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4417 /** Combined modelview and projection matrix */
4418 GLmatrix _ModelProjectMatrix
;
4420 /** \name Display lists */
4421 struct gl_dlist_state ListState
;
4423 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4424 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4426 /** Extension information */
4427 struct gl_extensions Extensions
;
4429 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4431 char *VersionString
;
4433 /** \name State attribute stack (for glPush/PopAttrib) */
4435 GLuint AttribStackDepth
;
4436 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4439 /** \name Renderer attribute groups
4441 * We define a struct for each attribute group to make pushing and popping
4442 * attributes easy. Also it's a good organization.
4445 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4446 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4447 struct gl_current_attrib Current
; /**< Current attributes */
4448 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4449 struct gl_eval_attrib Eval
; /**< Eval attributes */
4450 struct gl_fog_attrib Fog
; /**< Fog attributes */
4451 struct gl_hint_attrib Hint
; /**< Hint attributes */
4452 struct gl_light_attrib Light
; /**< Light attributes */
4453 struct gl_line_attrib Line
; /**< Line attributes */
4454 struct gl_list_attrib List
; /**< List attributes */
4455 struct gl_multisample_attrib Multisample
;
4456 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4457 struct gl_point_attrib Point
; /**< Point attributes */
4458 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4459 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4460 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4461 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4462 struct gl_texture_attrib Texture
; /**< Texture attributes */
4463 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4464 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4467 /** \name Client attribute stack */
4469 GLuint ClientAttribStackDepth
;
4470 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4473 /** \name Client attribute groups */
4475 struct gl_array_attrib Array
; /**< Vertex arrays */
4476 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4477 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4478 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4481 /** \name Other assorted state (not pushed/popped on attribute stack) */
4483 struct gl_pixelmaps PixelMaps
;
4485 struct gl_evaluators EvalMap
; /**< All evaluators */
4486 struct gl_feedback Feedback
; /**< Feedback */
4487 struct gl_selection Select
; /**< Selection */
4489 struct gl_program_state Program
; /**< general program state */
4490 struct gl_vertex_program_state VertexProgram
;
4491 struct gl_fragment_program_state FragmentProgram
;
4492 struct gl_geometry_program_state GeometryProgram
;
4493 struct gl_compute_program_state ComputeProgram
;
4494 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4495 struct gl_tess_eval_program_state TessEvalProgram
;
4496 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4498 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4499 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4502 * Current active shader pipeline state
4504 * Almost all internal users want ::_Shader instead of ::Shader. The
4505 * exceptions are bits of legacy GLSL API that do not know about separate
4508 * If a program is active via \c glUseProgram, this will point to
4511 * If a program pipeline is active via \c glBindProgramPipeline, this will
4512 * point to \c ::Pipeline.Current.
4514 * If neither a program nor a program pipeline is active, this will point to
4515 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4518 struct gl_pipeline_object
*_Shader
;
4520 struct gl_query_state Query
; /**< occlusion, timer queries */
4522 struct gl_transform_feedback_state TransformFeedback
;
4524 struct gl_perf_monitor_state PerfMonitor
;
4526 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4527 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4528 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4530 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4531 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4533 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4536 * Current GL_ARB_uniform_buffer_object binding referenced by
4537 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4539 struct gl_buffer_object
*UniformBuffer
;
4542 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4543 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4545 struct gl_buffer_object
*ShaderStorageBuffer
;
4548 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4549 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4550 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4553 struct gl_uniform_buffer_binding
4554 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4557 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4558 * and GL 4.3. This is set up using glBindBufferRange() or
4559 * glBindBufferBase(). They are associated with shader storage blocks by
4560 * glShaderStorageBlockBinding()'s state in the shader program.
4562 struct gl_shader_storage_buffer_binding
4563 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4566 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4569 struct gl_buffer_object
*AtomicBuffer
;
4572 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4575 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4578 * Array of atomic counter buffer binding points.
4580 struct gl_atomic_buffer_binding
4581 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4584 * Array of image units for ARB_shader_image_load_store.
4586 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4588 struct gl_subroutine_index_binding SubroutineIndex
[MESA_SHADER_STAGES
];
4591 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4593 /* GL_EXT_framebuffer_object */
4594 struct gl_renderbuffer
*CurrentRenderbuffer
;
4596 GLenum ErrorValue
; /**< Last error code */
4599 * Recognize and silence repeated error debug messages in buggy apps.
4601 const char *ErrorDebugFmtString
;
4602 GLuint ErrorDebugCount
;
4604 /* GL_ARB_debug_output/GL_KHR_debug */
4606 struct gl_debug_state
*Debug
;
4608 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4609 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4610 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4612 struct gl_driver_flags DriverFlags
;
4614 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4616 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4618 /** \name Derived state */
4619 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4620 GLfloat _EyeZDir
[3];
4621 GLfloat _ModelViewInvScale
;
4622 GLboolean _NeedEyeCoords
;
4623 GLboolean _ForceEyeCoords
;
4625 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4627 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4629 /** \name For debugging/development only */
4631 GLboolean FirstTimeCurrent
;
4635 * False if this context was created without a config. This is needed
4636 * because the initial state of glDrawBuffers depends on this
4638 GLboolean HasConfig
;
4640 /** software compression/decompression supported or not */
4641 GLboolean Mesa_DXTn
;
4643 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4645 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4648 * \name Hooks for module contexts.
4650 * These will eventually live in the driver or elsewhere.
4653 void *swrast_context
;
4654 void *swsetup_context
;
4655 void *swtnl_context
;
4656 struct vbo_context
*vbo_context
;
4657 struct st_context
*st
;
4662 * \name NV_vdpau_interop
4665 const void *vdpDevice
;
4666 const void *vdpGetProcAddress
;
4667 struct set
*vdpSurfaces
;
4671 * Has this context observed a GPU reset in any context in the share group?
4673 * Once this field becomes true, it is never reset to false.
4675 GLboolean ShareGroupReset
;
4678 * \name OES_primitive_bounding_box
4680 * Stores the arguments to glPrimitiveBoundingBox
4682 GLfloat PrimitiveBoundingBox
[8];
4686 * Information about memory usage. All sizes are in kilobytes.
4688 struct gl_memory_info
4690 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4691 unsigned avail_device_memory
; /**< free device memory at the moment */
4692 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4693 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4694 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4695 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4699 extern int MESA_VERBOSE
;
4700 extern int MESA_DEBUG_FLAGS
;
4701 # define MESA_FUNCTION __func__
4703 # define MESA_VERBOSE 0
4704 # define MESA_DEBUG_FLAGS 0
4705 # define MESA_FUNCTION "a function"
4709 /** The MESA_VERBOSE var is a bitmask of these flags */
4712 VERBOSE_VARRAY
= 0x0001,
4713 VERBOSE_TEXTURE
= 0x0002,
4714 VERBOSE_MATERIAL
= 0x0004,
4715 VERBOSE_PIPELINE
= 0x0008,
4716 VERBOSE_DRIVER
= 0x0010,
4717 VERBOSE_STATE
= 0x0020,
4718 VERBOSE_API
= 0x0040,
4719 VERBOSE_DISPLAY_LIST
= 0x0100,
4720 VERBOSE_LIGHTING
= 0x0200,
4721 VERBOSE_PRIMS
= 0x0400,
4722 VERBOSE_VERTS
= 0x0800,
4723 VERBOSE_DISASSEM
= 0x1000,
4724 VERBOSE_DRAW
= 0x2000,
4725 VERBOSE_SWAPBUFFERS
= 0x4000
4729 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4732 DEBUG_SILENT
= (1 << 0),
4733 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4734 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4735 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4742 #endif /* MTYPES_H */