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 * Vertex array information which is derived from gl_array_attributes
1336 * and gl_vertex_buffer_binding information. Used by the VBO module and
1339 struct gl_vertex_array
1341 GLint Size
; /**< components per element (1,2,3,4) */
1342 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1343 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1344 GLsizei StrideB
; /**< actual stride in bytes */
1345 GLuint _ElementSize
; /**< size of each element in bytes */
1346 const GLubyte
*Ptr
; /**< Points to array data */
1347 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1348 GLboolean Integer
; /**< Integer-valued? */
1349 GLboolean Doubles
; /**< double precision values are not converted to floats */
1350 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1352 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1357 * Attributes to describe a vertex array.
1359 * Contains the size, type, format and normalization flag,
1360 * along with the index of a vertex buffer binding point.
1362 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1363 * and is only present for backwards compatibility reasons.
1364 * Rendering always uses VERTEX_BINDING_STRIDE.
1365 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1366 * and VERTEX_BINDING_STRIDE to the same value, while
1367 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1369 struct gl_array_attributes
1371 GLint Size
; /**< Components per element (1,2,3,4) */
1372 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1373 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1374 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1375 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1376 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1377 GLboolean Enabled
; /**< Whether the array is enabled */
1378 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1379 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1380 GLboolean Doubles
; /**< double precision values are not converted to floats */
1381 GLuint _ElementSize
; /**< Size of each element in bytes */
1382 GLuint BufferBindingIndex
; /**< Vertex buffer binding */
1387 * This describes the buffer object used for a vertex array (or
1388 * multiple vertex arrays). If BufferObj points to the default/null
1389 * buffer object, then the vertex array lives in user memory and not a VBO.
1391 struct gl_vertex_buffer_binding
1393 GLintptr Offset
; /**< User-specified offset */
1394 GLsizei Stride
; /**< User-specified stride */
1395 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1396 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1397 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1402 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1403 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1406 struct gl_vertex_array_object
1408 /** Name of the VAO as received from glGenVertexArray. */
1413 GLchar
*Label
; /**< GL_KHR_debug */
1418 * Does the VAO use ARB semantics or Apple semantics?
1420 * There are several ways in which ARB_vertex_array_object and
1421 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1424 * - ARB VAOs require that all array data be sourced from vertex buffer
1425 * objects, but Apple VAOs do not.
1427 * - ARB VAOs require that names come from GenVertexArrays.
1429 * This flag notes which behavior governs this VAO.
1431 GLboolean ARBsemantics
;
1434 * Has this array object been bound?
1436 GLboolean EverBound
;
1439 * Derived vertex attribute arrays
1441 * This is a legacy data structure created from gl_vertex_attrib_array and
1442 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1444 struct gl_vertex_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1446 /** Vertex attribute arrays */
1447 struct gl_array_attributes VertexAttrib
[VERT_ATTRIB_MAX
];
1449 /** Vertex buffer bindings */
1450 struct gl_vertex_buffer_binding BufferBinding
[VERT_ATTRIB_MAX
];
1452 /** Mask indicating which vertex arrays have vertex buffer associated. */
1453 GLbitfield64 VertexAttribBufferMask
;
1455 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1456 GLbitfield64 _Enabled
;
1458 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1459 GLbitfield64 NewArrays
;
1461 /** The index buffer (also known as the element array buffer in OpenGL). */
1462 struct gl_buffer_object
*IndexBufferObj
;
1466 /** Used to signal when transitioning from one kind of drawing method
1470 DRAW_NONE
, /**< Initial value only */
1477 * Enum for the OpenGL APIs we know about and may support.
1479 * NOTE: This must match the api_enum table in
1480 * src/mesa/main/get_hash_generator.py
1484 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1488 API_OPENGL_LAST
= API_OPENGL_CORE
1492 * Vertex array state
1494 struct gl_array_attrib
1496 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1497 struct gl_vertex_array_object
*VAO
;
1499 /** The default vertex array object */
1500 struct gl_vertex_array_object
*DefaultVAO
;
1502 /** The last VAO accessed by a DSA function */
1503 struct gl_vertex_array_object
*LastLookedUpVAO
;
1505 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1506 struct _mesa_HashTable
*Objects
;
1508 GLint ActiveTexture
; /**< Client Active Texture */
1509 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1510 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1513 * \name Primitive restart controls
1515 * Primitive restart is enabled if either \c PrimitiveRestart or
1516 * \c PrimitiveRestartFixedIndex is set.
1519 GLboolean PrimitiveRestart
;
1520 GLboolean PrimitiveRestartFixedIndex
;
1521 GLboolean _PrimitiveRestart
;
1522 GLuint RestartIndex
;
1525 /** One of the DRAW_xxx flags, not consumed by drivers */
1526 gl_draw_method DrawMethod
;
1528 /* GL_ARB_vertex_buffer_object */
1529 struct gl_buffer_object
*ArrayBufferObj
;
1532 * Vertex arrays as consumed by a driver.
1533 * The array pointer is set up only by the VBO module.
1535 const struct gl_vertex_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1537 /** Legal array datatypes and the API for which they have been computed */
1538 GLbitfield LegalTypesMask
;
1539 gl_api LegalTypesMaskAPI
;
1544 * Feedback buffer state
1549 GLbitfield _Mask
; /**< FB_* bits */
1557 * Selection buffer state
1561 GLuint
*Buffer
; /**< selection buffer */
1562 GLuint BufferSize
; /**< size of the selection buffer */
1563 GLuint BufferCount
; /**< number of values in the selection buffer */
1564 GLuint Hits
; /**< number of records in the selection buffer */
1565 GLuint NameStackDepth
; /**< name stack depth */
1566 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1567 GLboolean HitFlag
; /**< hit flag */
1568 GLfloat HitMinZ
; /**< minimum hit depth */
1569 GLfloat HitMaxZ
; /**< maximum hit depth */
1574 * 1-D Evaluator control points
1578 GLuint Order
; /**< Number of control points */
1579 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1580 GLfloat
*Points
; /**< Points to contiguous control points */
1585 * 2-D Evaluator control points
1589 GLuint Uorder
; /**< Number of control points in U dimension */
1590 GLuint Vorder
; /**< Number of control points in V dimension */
1593 GLfloat
*Points
; /**< Points to contiguous control points */
1598 * All evaluator control point state
1600 struct gl_evaluators
1606 struct gl_1d_map Map1Vertex3
;
1607 struct gl_1d_map Map1Vertex4
;
1608 struct gl_1d_map Map1Index
;
1609 struct gl_1d_map Map1Color4
;
1610 struct gl_1d_map Map1Normal
;
1611 struct gl_1d_map Map1Texture1
;
1612 struct gl_1d_map Map1Texture2
;
1613 struct gl_1d_map Map1Texture3
;
1614 struct gl_1d_map Map1Texture4
;
1621 struct gl_2d_map Map2Vertex3
;
1622 struct gl_2d_map Map2Vertex4
;
1623 struct gl_2d_map Map2Index
;
1624 struct gl_2d_map Map2Color4
;
1625 struct gl_2d_map Map2Normal
;
1626 struct gl_2d_map Map2Texture1
;
1627 struct gl_2d_map Map2Texture2
;
1628 struct gl_2d_map Map2Texture3
;
1629 struct gl_2d_map Map2Texture4
;
1634 struct gl_transform_feedback_varying_info
1645 * Per-output info vertex shaders for transform feedback.
1647 struct gl_transform_feedback_output
1649 uint32_t OutputRegister
;
1650 uint32_t OutputBuffer
;
1651 uint32_t NumComponents
;
1654 /** offset (in DWORDs) of this output within the interleaved structure */
1658 * Offset into the output register of the data to output. For example,
1659 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1660 * offset is in the y and z components of the output register.
1662 uint32_t ComponentOffset
;
1666 struct gl_transform_feedback_buffer
1670 uint32_t NumVaryings
;
1673 * Total number of components stored in each buffer. This may be used by
1674 * hardware back-ends to determine the correct stride when interleaving
1675 * multiple transform feedback outputs in the same buffer.
1680 * Which transform feedback stream this buffer binding is associated with.
1686 /** Post-link transform feedback info. */
1687 struct gl_transform_feedback_info
1689 unsigned NumOutputs
;
1691 /* Bitmask of active buffer indices. */
1692 unsigned ActiveBuffers
;
1694 struct gl_transform_feedback_output
*Outputs
;
1696 /** Transform feedback varyings used for the linking of this shader program.
1698 * Use for glGetTransformFeedbackVarying().
1700 struct gl_transform_feedback_varying_info
*Varyings
;
1703 struct gl_transform_feedback_buffer Buffers
[MAX_FEEDBACK_BUFFERS
];
1708 * Transform feedback object state
1710 struct gl_transform_feedback_object
1712 GLuint Name
; /**< AKA the object ID */
1714 GLchar
*Label
; /**< GL_KHR_debug */
1715 GLboolean Active
; /**< Is transform feedback enabled? */
1716 GLboolean Paused
; /**< Is transform feedback paused? */
1717 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1719 GLboolean EverBound
; /**< Has this object been bound? */
1722 * GLES: if Active is true, remaining number of primitives which can be
1723 * rendered without overflow. This is necessary to track because GLES
1724 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1725 * glDrawArraysInstanced would overflow transform feedback buffers.
1726 * Undefined if Active is false.
1728 * Not tracked for desktop GL since it's unnecessary.
1730 unsigned GlesRemainingPrims
;
1733 * The program active when BeginTransformFeedback() was called.
1734 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1735 * where stage is the pipeline stage that is the source of data for
1736 * transform feedback.
1738 struct gl_program
*program
;
1740 /** The feedback buffers */
1741 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1742 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1744 /** Start of feedback data in dest buffer */
1745 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1748 * Max data to put into dest buffer (in bytes). Computed based on
1749 * RequestedSize and the actual size of the buffer.
1751 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1754 * Size that was specified when the buffer was bound. If the buffer was
1755 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1758 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1763 * Context state for transform feedback.
1765 struct gl_transform_feedback_state
1767 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1769 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1770 struct gl_buffer_object
*CurrentBuffer
;
1772 /** The table of all transform feedback objects */
1773 struct _mesa_HashTable
*Objects
;
1775 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1776 struct gl_transform_feedback_object
*CurrentObject
;
1778 /** The default xform-fb object (Name==0) */
1779 struct gl_transform_feedback_object
*DefaultObject
;
1784 * A "performance monitor" as described in AMD_performance_monitor.
1786 struct gl_perf_monitor_object
1790 /** True if the monitor is currently active (Begin called but not End). */
1794 * True if the monitor has ended.
1796 * This is distinct from !Active because it may never have began.
1801 * A list of groups with currently active counters.
1803 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1805 unsigned *ActiveGroups
;
1808 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1810 * Checking whether counter 'c' in group 'g' is active can be done via:
1812 * BITSET_TEST(ActiveCounters[g], c)
1814 GLuint
**ActiveCounters
;
1818 union gl_perf_monitor_counter_value
1826 struct gl_perf_monitor_counter
1828 /** Human readable name for the counter. */
1832 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1833 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1837 /** Minimum counter value. */
1838 union gl_perf_monitor_counter_value Minimum
;
1840 /** Maximum counter value. */
1841 union gl_perf_monitor_counter_value Maximum
;
1845 struct gl_perf_monitor_group
1847 /** Human readable name for the group. */
1851 * Maximum number of counters in this group which can be active at the
1854 GLuint MaxActiveCounters
;
1856 /** Array of counters within this group. */
1857 const struct gl_perf_monitor_counter
*Counters
;
1863 * Context state for AMD_performance_monitor.
1865 struct gl_perf_monitor_state
1867 /** Array of performance monitor groups (indexed by group ID) */
1868 const struct gl_perf_monitor_group
*Groups
;
1871 /** The table of all performance monitors. */
1872 struct _mesa_HashTable
*Monitors
;
1877 * Names of the various vertex/fragment program register files, etc.
1879 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1880 * All values should fit in a 4-bit field.
1882 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1883 * considered to be "uniform" variables since they can only be set outside
1884 * glBegin/End. They're also all stored in the same Parameters array.
1888 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1889 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1890 PROGRAM_INPUT
, /**< machine->Inputs[] */
1891 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1892 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1893 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1894 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1895 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1896 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1897 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1898 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1899 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1900 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
1901 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
1902 PROGRAM_MEMORY
, /**< for shared, global and local memory */
1903 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
1909 * Base class for any kind of program object
1913 /** FIXME: This must be first until we split shader_info from nir_shader */
1914 struct shader_info info
;
1919 GLubyte
*String
; /**< Null-terminated program text */
1921 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1922 GLenum Format
; /**< String encoding format */
1924 GLboolean _Used
; /**< Ever used for drawing? Used for debugging */
1926 struct nir_shader
*nir
;
1928 bool is_arb_asm
; /** Is this an ARB assembly-style program */
1930 /** Is this program written to on disk shader cache */
1931 bool program_written_to_cache
;
1933 GLbitfield64 SecondaryOutputsWritten
; /**< Subset of OutputsWritten outputs written with non-zero index. */
1934 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1935 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1936 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1937 GLbitfield ExternalSamplersUsed
; /**< Texture units used for samplerExternalOES */
1939 /* Fragement shader only fields */
1940 GLboolean OriginUpperLeft
;
1941 GLboolean PixelCenterInteger
;
1943 /** Named parameters, constants, etc. from program text */
1944 struct gl_program_parameter_list
*Parameters
;
1946 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1947 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1949 /* FIXME: We should be able to make this struct a union. However some
1950 * drivers (i915/fragment_programs, swrast/prog_execute) mix the use of
1951 * these fields, we should fix this.
1954 /** Fields used by GLSL programs */
1956 /** Data shared by gl_program and gl_shader_program */
1957 struct gl_shader_program_data
*data
;
1959 struct gl_active_atomic_buffer
**AtomicBuffers
;
1961 /** Post-link transform feedback info. */
1962 struct gl_transform_feedback_info
*LinkedTransformFeedback
;
1965 * Number of types for subroutine uniforms.
1967 GLuint NumSubroutineUniformTypes
;
1970 * Subroutine uniform remap table
1971 * based on the program level uniform remap table.
1973 GLuint NumSubroutineUniforms
; /* non-sparse total */
1974 GLuint NumSubroutineUniformRemapTable
;
1975 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
1978 * Num of subroutine functions for this stage and storage for them.
1980 GLuint NumSubroutineFunctions
;
1981 GLuint MaxSubroutineFunctionIndex
;
1982 struct gl_subroutine_function
*SubroutineFunctions
;
1985 * Map from image uniform index to image unit (set by glUniform1i())
1987 * An image uniform index is associated with each image uniform by
1988 * the linker. The image index associated with each uniform is
1989 * stored in the \c gl_uniform_storage::image field.
1991 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
1994 * Access qualifier specified in the shader for each image uniform
1995 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
1998 * It may be different, though only more strict than the value of
1999 * \c gl_image_unit::Access for the corresponding image unit.
2001 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2003 struct gl_uniform_block
**UniformBlocks
;
2004 struct gl_uniform_block
**ShaderStorageBlocks
;
2006 /** Which texture target is being sampled
2007 * (TEXTURE_1D/2D/3D/etc_INDEX)
2009 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2014 * A bitmask of gl_advanced_blend_mode values
2016 GLbitfield BlendSupport
;
2021 /** ARB assembly-style program fields */
2023 struct prog_instruction
*Instructions
;
2026 * Local parameters used by the program.
2028 * It's dynamically allocated because it is rarely used (just
2029 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries
2030 * once it's allocated.
2032 GLfloat (*LocalParams
)[4];
2034 /** Bitmask of which register files are read/written with indirect
2035 * addressing. Mask of (1 << PROGRAM_x) bits.
2037 GLbitfield IndirectRegisterFiles
;
2039 /** Logical counts */
2041 GLuint NumInstructions
;
2042 GLuint NumTemporaries
;
2043 GLuint NumParameters
;
2044 GLuint NumAttributes
;
2045 GLuint NumAddressRegs
;
2046 GLuint NumAluInstructions
;
2047 GLuint NumTexInstructions
;
2048 GLuint NumTexIndirections
;
2050 /** Native, actual h/w counts */
2052 GLuint NumNativeInstructions
;
2053 GLuint NumNativeTemporaries
;
2054 GLuint NumNativeParameters
;
2055 GLuint NumNativeAttributes
;
2056 GLuint NumNativeAddressRegs
;
2057 GLuint NumNativeAluInstructions
;
2058 GLuint NumNativeTexInstructions
;
2059 GLuint NumNativeTexIndirections
;
2062 /** Used by ARB assembly-style programs. Can only be true for vertex
2065 GLboolean IsPositionInvariant
;
2072 * State common to vertex and fragment programs.
2074 struct gl_program_state
2076 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2077 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2082 * Context state for vertex programs.
2084 struct gl_vertex_program_state
2086 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2087 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2088 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2089 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2090 /** Computed two sided lighting for fixed function/programs. */
2091 GLboolean _TwoSideEnabled
;
2092 struct gl_program
*Current
; /**< User-bound vertex program */
2094 /** Currently enabled and valid vertex program (including internal
2095 * programs, user-defined vertex programs and GLSL vertex shaders).
2096 * This is the program we must use when rendering.
2098 struct gl_program
*_Current
;
2100 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2102 /** Should fixed-function T&L be implemented with a vertex prog? */
2103 GLboolean _MaintainTnlProgram
;
2105 /** Program to emulate fixed-function T&L (see above) */
2106 struct gl_program
*_TnlProgram
;
2108 /** Cache of fixed-function programs */
2109 struct gl_program_cache
*Cache
;
2111 GLboolean _Overriden
;
2115 * Context state for tessellation control programs.
2117 struct gl_tess_ctrl_program_state
2119 /** Currently bound and valid shader. */
2120 struct gl_program
*_Current
;
2122 GLint patch_vertices
;
2123 GLfloat patch_default_outer_level
[4];
2124 GLfloat patch_default_inner_level
[2];
2128 * Context state for tessellation evaluation programs.
2130 struct gl_tess_eval_program_state
2132 /** Currently bound and valid shader. */
2133 struct gl_program
*_Current
;
2137 * Context state for geometry programs.
2139 struct gl_geometry_program_state
2141 /** Currently enabled and valid program (including internal programs
2142 * and compiled shader programs).
2144 struct gl_program
*_Current
;
2148 * Context state for fragment programs.
2150 struct gl_fragment_program_state
2152 GLboolean Enabled
; /**< User-set fragment program enable flag */
2153 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2154 struct gl_program
*Current
; /**< User-bound fragment program */
2156 /** Currently enabled and valid fragment program (including internal
2157 * programs, user-defined fragment programs and GLSL fragment shaders).
2158 * This is the program we must use when rendering.
2160 struct gl_program
*_Current
;
2162 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2164 /** Should fixed-function texturing be implemented with a fragment prog? */
2165 GLboolean _MaintainTexEnvProgram
;
2167 /** Program to emulate fixed-function texture env/combine (see above) */
2168 struct gl_program
*_TexEnvProgram
;
2170 /** Cache of fixed-function programs */
2171 struct gl_program_cache
*Cache
;
2176 * Context state for compute programs.
2178 struct gl_compute_program_state
2180 /** Currently enabled and valid program (including internal programs
2181 * and compiled shader programs).
2183 struct gl_program
*_Current
;
2188 * ATI_fragment_shader runtime state
2191 struct atifs_instruction
;
2192 struct atifs_setupinst
;
2195 * ATI fragment shader
2197 struct ati_fragment_shader
2201 struct atifs_instruction
*Instructions
[2];
2202 struct atifs_setupinst
*SetupInst
[2];
2203 GLfloat Constants
[8][4];
2204 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2205 GLubyte numArithInstr
[2];
2206 GLubyte regsAssigned
[2];
2207 GLubyte NumPasses
; /**< 1 or 2 */
2209 GLubyte last_optype
;
2210 GLboolean interpinp1
;
2213 struct gl_program
*Program
;
2217 * Context state for GL_ATI_fragment_shader
2219 struct gl_ati_fragment_shader_state
2222 GLboolean _Enabled
; /**< enabled and valid shader? */
2223 GLboolean Compiling
;
2224 GLfloat GlobalConstants
[8][4];
2225 struct ati_fragment_shader
*Current
;
2229 * Shader subroutine function definition
2231 struct gl_subroutine_function
2235 int num_compat_types
;
2236 const struct glsl_type
**types
;
2240 * Shader information needed by both gl_shader and gl_linked shader.
2242 struct gl_shader_info
2245 * Tessellation Control shader state from layout qualifiers.
2249 * 0 - vertices not declared in shader, or
2250 * 1 .. GL_MAX_PATCH_VERTICES
2256 * Tessellation Evaluation shader state from layout qualifiers.
2260 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2263 GLenum PrimitiveMode
;
2265 enum gl_tess_spacing Spacing
;
2268 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2272 * 1, 0, or -1 if it's not set in this shader.
2278 * Geometry shader state from GLSL 1.50 layout qualifiers.
2283 * 0 - Invocations count not declared in shader, or
2284 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2288 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2289 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2294 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2295 * it's not set in this shader.
2301 * Compute shader state from ARB_compute_shader and
2302 * ARB_compute_variable_group_size layout qualifiers.
2306 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2307 * it's not set in this shader.
2309 unsigned LocalSize
[3];
2312 * Whether a variable work group size has been specified as defined by
2313 * ARB_compute_variable_group_size.
2315 bool LocalSizeVariable
;
2320 * A linked GLSL shader object.
2322 struct gl_linked_shader
2324 gl_shader_stage Stage
;
2327 unsigned SourceChecksum
;
2330 struct gl_program
*Program
; /**< Post-compile assembly code */
2333 * \name Sampler tracking
2335 * \note Each of these fields is only set post-linking.
2338 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2342 * Number of default uniform block components used by this shader.
2344 * This field is only set post-linking.
2346 unsigned num_uniform_components
;
2349 * Number of combined uniform components used by this shader.
2351 * This field is only set post-linking. It is the sum of the uniform block
2352 * sizes divided by sizeof(float), and num_uniform_compoennts.
2354 unsigned num_combined_uniform_components
;
2356 struct exec_list
*ir
;
2357 struct exec_list
*packed_varyings
;
2358 struct exec_list
*fragdata_arrays
;
2359 struct glsl_symbol_table
*symbols
;
2362 static inline GLbitfield
gl_external_samplers(struct gl_program
*prog
)
2364 GLbitfield external_samplers
= 0;
2365 GLbitfield mask
= prog
->SamplersUsed
;
2368 int idx
= u_bit_scan(&mask
);
2369 if (prog
->sh
.SamplerTargets
[idx
] == TEXTURE_EXTERNAL_INDEX
)
2370 external_samplers
|= (1 << idx
);
2373 return external_samplers
;
2377 * A GLSL shader object.
2381 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2382 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2383 * Must be the first field.
2386 gl_shader_stage Stage
;
2387 GLuint Name
; /**< AKA the handle */
2388 GLint RefCount
; /**< Reference count */
2389 GLchar
*Label
; /**< GL_KHR_debug */
2390 unsigned char sha1
[20]; /**< SHA1 hash of pre-processed source */
2391 GLboolean DeletePending
;
2392 GLboolean CompileStatus
;
2393 bool IsES
; /**< True if this shader uses GLSL ES */
2396 unsigned SourceChecksum
; /**< for debug/logging purposes */
2398 const GLchar
*Source
; /**< Source code string */
2400 const GLchar
*FallbackSource
; /**< Fallback string used by on-disk cache*/
2404 unsigned Version
; /**< GLSL version used for linking */
2406 struct exec_list
*ir
;
2407 struct glsl_symbol_table
*symbols
;
2410 * A bitmask of gl_advanced_blend_mode values
2412 GLbitfield BlendSupport
;
2415 * Whether early fragment tests are enabled as defined by
2416 * ARB_shader_image_load_store.
2418 bool EarlyFragmentTests
;
2420 bool ARB_fragment_coord_conventions_enable
;
2422 bool redeclares_gl_fragcoord
;
2423 bool uses_gl_fragcoord
;
2425 bool PostDepthCoverage
;
2429 * Fragment shader state from GLSL 1.50 layout qualifiers.
2431 bool origin_upper_left
;
2432 bool pixel_center_integer
;
2434 /** Global xfb_stride out qualifier if any */
2435 GLuint TransformFeedbackBufferStride
[MAX_FEEDBACK_BUFFERS
];
2437 struct gl_shader_info info
;
2441 struct gl_uniform_buffer_variable
2446 * Name of the uniform as seen by glGetUniformIndices.
2448 * glGetUniformIndices requires that the block instance index \b not be
2449 * present in the name of queried uniforms.
2452 * \c gl_uniform_buffer_variable::IndexName and
2453 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2457 const struct glsl_type
*Type
;
2458 unsigned int Offset
;
2463 enum gl_uniform_block_packing
2472 struct gl_uniform_block
2474 /** Declared name of the uniform block */
2477 /** Array of supplemental information about UBO ir_variables. */
2478 struct gl_uniform_buffer_variable
*Uniforms
;
2482 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2483 * with glBindBufferBase to bind a buffer object to this uniform block. When
2484 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2489 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2490 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2492 GLuint UniformBufferSize
;
2494 /** Stages that reference this block */
2498 * Linearized array index for uniform block instance arrays
2500 * Given a uniform block instance array declared with size
2501 * blk[s_0][s_1]..[s_m], the block referenced by blk[i_0][i_1]..[i_m] will
2502 * have the linearized array index
2505 * i_m + ∑ i_j * ∏ s_k
2508 * For a uniform block instance that is not an array, this is always 0.
2510 uint8_t linearized_array_index
;
2513 * Layout specified in the shader
2515 * This isn't accessible through the API, but it is used while
2516 * cross-validating uniform blocks.
2518 enum gl_uniform_block_packing _Packing
;
2519 GLboolean _RowMajor
;
2523 * Structure that represents a reference to an atomic buffer from some
2526 struct gl_active_atomic_buffer
2528 /** Uniform indices of the atomic counters declared within it. */
2532 /** Binding point index associated with it. */
2535 /** Minimum reasonable size it is expected to have. */
2538 /** Shader stages making use of it. */
2539 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2543 * Data container for shader queries. This holds only the minimal
2544 * amount of required information for resource queries to work.
2546 struct gl_shader_variable
2549 * Declared type of the variable
2551 const struct glsl_type
*type
;
2554 * If the variable is in an interface block, this is the type of the block.
2556 const struct glsl_type
*interface_type
;
2559 * For variables inside structs (possibly recursively), this is the
2560 * outermost struct type.
2562 const struct glsl_type
*outermost_struct_type
;
2565 * Declared name of the variable
2570 * Storage location of the base of this variable
2572 * The precise meaning of this field depends on the nature of the variable.
2574 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2575 * - Vertex shader output: one of the values from \c gl_varying_slot.
2576 * - Geometry shader input: one of the values from \c gl_varying_slot.
2577 * - Geometry shader output: one of the values from \c gl_varying_slot.
2578 * - Fragment shader input: one of the values from \c gl_varying_slot.
2579 * - Fragment shader output: one of the values from \c gl_frag_result.
2580 * - Uniforms: Per-stage uniform slot number for default uniform block.
2581 * - Uniforms: Index within the uniform block definition for UBO members.
2582 * - Non-UBO Uniforms: explicit location until linking then reused to
2583 * store uniform slot number.
2584 * - Other: This field is not currently used.
2586 * If the variable is a uniform, shader input, or shader output, and the
2587 * slot has not been assigned, the value will be -1.
2592 * Specifies the first component the variable is stored in as per
2593 * ARB_enhanced_layouts.
2595 unsigned component
:2;
2598 * Output index for dual source blending.
2601 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2607 * Specifies whether a shader input/output is per-patch in tessellation
2613 * Storage class of the variable.
2615 * \sa (n)ir_variable_mode
2620 * Interpolation mode for shader inputs / outputs
2622 * \sa glsl_interp_mode
2624 unsigned interpolation
:2;
2627 * Was the location explicitly set in the shader?
2629 * If the location is explicitly set in the shader, it \b cannot be changed
2630 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2633 unsigned explicit_location
:1;
2636 * Precision qualifier.
2638 unsigned precision
:2;
2642 * Active resource in a gl_shader_program
2644 struct gl_program_resource
2646 GLenum Type
; /** Program interface type. */
2647 const void *Data
; /** Pointer to resource associated data structure. */
2648 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2652 * Link status enum. linking_skipped is used to indicate linking
2653 * was skipped due to the shader being loaded from the on-disk cache.
2657 linking_failure
= 0,
2663 * A data structure to be shared by gl_shader_program and gl_program.
2665 struct gl_shader_program_data
2667 GLint RefCount
; /**< Reference count */
2669 /** SHA1 hash of linked shader program */
2670 unsigned char sha1
[20];
2672 unsigned NumUniformStorage
;
2673 unsigned NumHiddenUniforms
;
2674 struct gl_uniform_storage
*UniformStorage
;
2676 unsigned NumUniformBlocks
;
2677 struct gl_uniform_block
*UniformBlocks
;
2679 unsigned NumShaderStorageBlocks
;
2680 struct gl_uniform_block
*ShaderStorageBlocks
;
2682 struct gl_active_atomic_buffer
*AtomicBuffers
;
2683 unsigned NumAtomicBuffers
;
2685 /* Shader cache variables used during restore */
2686 unsigned NumUniformDataSlots
;
2687 union gl_constant_value
*UniformDataSlots
;
2689 /** List of all active resources after linking. */
2690 struct gl_program_resource
*ProgramResourceList
;
2691 unsigned NumProgramResourceList
;
2693 enum gl_link_status LinkStatus
; /**< GL_LINK_STATUS */
2694 GLboolean Validated
;
2697 unsigned Version
; /**< GLSL version used for linking */
2699 /* Mask of stages this program was linked against */
2700 unsigned linked_stages
;
2704 * A GLSL program object.
2705 * Basically a linked collection of vertex and fragment shaders.
2707 struct gl_shader_program
2709 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2710 GLuint Name
; /**< aka handle or ID */
2711 GLchar
*Label
; /**< GL_KHR_debug */
2712 GLint RefCount
; /**< Reference count */
2713 GLboolean DeletePending
;
2716 * Is the application intending to glGetProgramBinary this program?
2718 GLboolean BinaryRetreivableHint
;
2721 * Indicates whether program can be bound for individual pipeline stages
2722 * using UseProgramStages after it is next linked.
2724 GLboolean SeparateShader
;
2726 GLuint NumShaders
; /**< number of attached shaders */
2727 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2730 * User-defined attribute bindings
2732 * These are set via \c glBindAttribLocation and are used to direct the
2733 * GLSL linker. These are \b not the values used in the compiled shader,
2734 * and they are \b not the values returned by \c glGetAttribLocation.
2736 struct string_to_uint_map
*AttributeBindings
;
2739 * User-defined fragment data bindings
2741 * These are set via \c glBindFragDataLocation and are used to direct the
2742 * GLSL linker. These are \b not the values used in the compiled shader,
2743 * and they are \b not the values returned by \c glGetFragDataLocation.
2745 struct string_to_uint_map
*FragDataBindings
;
2746 struct string_to_uint_map
*FragDataIndexBindings
;
2749 * Transform feedback varyings last specified by
2750 * glTransformFeedbackVaryings().
2752 * For the current set of transform feedback varyings used for transform
2753 * feedback output, see LinkedTransformFeedback.
2757 /** Global xfb_stride out qualifier if any */
2758 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2760 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2761 } TransformFeedback
;
2763 struct gl_program
*last_vert_prog
;
2765 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2766 enum gl_frag_depth_layout FragDepthLayout
;
2769 * Geometry shader state - copied into gl_program by
2770 * _mesa_copy_linked_program_data().
2775 bool UsesEndPrimitive
;
2780 * Compute shader state - copied into gl_program by
2781 * _mesa_copy_linked_program_data().
2785 * Size of shared variables accessed by the compute shader.
2787 unsigned SharedSize
;
2790 /** Data shared by gl_program and gl_shader_program */
2791 struct gl_shader_program_data
*data
;
2794 * Mapping from GL uniform locations returned by \c glUniformLocation to
2795 * UniformStorage entries. Arrays will have multiple contiguous slots
2796 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2798 unsigned NumUniformRemapTable
;
2799 struct gl_uniform_storage
**UniformRemapTable
;
2802 * Sometimes there are empty slots left over in UniformRemapTable after we
2803 * allocate slots to explicit locations. This list stores the blocks of
2804 * continuous empty slots inside UniformRemapTable.
2806 struct exec_list EmptyUniformLocations
;
2809 * Total number of explicit uniform location including inactive uniforms.
2811 unsigned NumExplicitUniformLocations
;
2814 * Map of active uniform names to locations
2816 * Maps any active uniform that is not an array element to a location.
2817 * Each active uniform, including individual structure members will appear
2818 * in this map. This roughly corresponds to the set of names that would be
2819 * enumerated by \c glGetActiveUniform.
2821 struct string_to_uint_map
*UniformHash
;
2823 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2825 bool IsES
; /**< True if this program uses GLSL ES */
2828 * Per-stage shaders resulting from the first stage of linking.
2830 * Set of linked shaders for this program. The array is accessed using the
2831 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2834 struct gl_linked_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2836 /* True if any of the fragment shaders attached to this program use:
2837 * #extension ARB_fragment_coord_conventions: enable
2839 GLboolean ARB_fragment_coord_conventions_enable
;
2843 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2844 #define GLSL_LOG 0x2 /**< Write shaders to files */
2845 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2846 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2847 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2848 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2849 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2850 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2851 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2852 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2853 #define GLSL_CACHE_INFO 0x400 /**< Print debug information about shader cache */
2857 * Context state for GLSL vertex/fragment shaders.
2858 * Extended to support pipeline object
2860 struct gl_pipeline_object
2862 /** Name of the pipeline object as received from glGenProgramPipelines.
2863 * It would be 0 for shaders without separate shader objects.
2871 GLchar
*Label
; /**< GL_KHR_debug */
2874 * Programs used for rendering
2876 * There is a separate program set for each shader stage.
2878 struct gl_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2880 struct gl_shader_program
*ReferencedPrograms
[MESA_SHADER_STAGES
];
2882 struct gl_program
*_CurrentFragmentProgram
;
2885 * Program used by glUniform calls.
2887 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2889 struct gl_shader_program
*ActiveProgram
;
2891 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2893 GLboolean EverBound
; /**< Has the pipeline object been created */
2895 GLboolean Validated
; /**< Pipeline Validation status */
2901 * Context state for GLSL pipeline shaders.
2903 struct gl_pipeline_shader_state
2905 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2906 struct gl_pipeline_object
*Current
;
2908 /* Default Object to ensure that _Shader is never NULL */
2909 struct gl_pipeline_object
*Default
;
2911 /** Pipeline objects */
2912 struct _mesa_HashTable
*Objects
;
2916 * Compiler options for a single GLSL shaders type
2918 struct gl_shader_compiler_options
2920 /** Driver-selectable options: */
2921 GLboolean EmitNoLoops
;
2922 GLboolean EmitNoFunctions
;
2923 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2924 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2925 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2926 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2927 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
2928 * gl_CullDistance together from
2929 * float[8] to vec4[2]
2933 * \name Forms of indirect addressing the driver cannot do.
2936 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2937 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2938 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2939 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2940 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
2943 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2944 GLuint MaxUnrollIterations
;
2947 * Optimize code for array of structures backends.
2949 * This is a proxy for:
2950 * - preferring DP4 instructions (rather than MUL/MAD) for
2951 * matrix * vector operations, such as position transformation.
2953 GLboolean OptimizeForAOS
;
2955 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
2957 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
2958 GLboolean ClampBlockIndicesToArrayBounds
;
2960 const struct nir_shader_compiler_options
*NirOptions
;
2965 * Occlusion/timer query object.
2967 struct gl_query_object
2969 GLenum Target
; /**< The query target, when active */
2970 GLuint Id
; /**< hash table ID/name */
2971 GLchar
*Label
; /**< GL_KHR_debug */
2972 GLuint64EXT Result
; /**< the counter */
2973 GLboolean Active
; /**< inside Begin/EndQuery */
2974 GLboolean Ready
; /**< result is ready? */
2975 GLboolean EverBound
;/**< has query object ever been bound */
2976 GLuint Stream
; /**< The stream */
2981 * Context state for query objects.
2983 struct gl_query_state
2985 struct _mesa_HashTable
*QueryObjects
;
2986 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2987 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2989 /** GL_NV_conditional_render */
2990 struct gl_query_object
*CondRenderQuery
;
2992 /** GL_EXT_transform_feedback */
2993 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
2994 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
2996 /** GL_ARB_timer_query */
2997 struct gl_query_object
*TimeElapsed
;
2999 /** GL_ARB_pipeline_statistics_query */
3000 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3002 GLenum CondRenderMode
;
3006 /** Sync object state */
3007 struct gl_sync_object
3009 GLenum Type
; /**< GL_SYNC_FENCE */
3010 GLuint Name
; /**< Fence name */
3011 GLchar
*Label
; /**< GL_KHR_debug */
3012 GLint RefCount
; /**< Reference count */
3013 GLboolean DeletePending
; /**< Object was deleted while there were still
3014 * live references (e.g., sync not yet finished)
3016 GLenum SyncCondition
;
3017 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3018 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3023 * State which can be shared by multiple contexts:
3025 struct gl_shared_state
3027 mtx_t Mutex
; /**< for thread safety */
3028 GLint RefCount
; /**< Reference count */
3029 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3030 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3031 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3033 /** Default texture objects (shared by all texture units) */
3034 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3036 /** Fallback texture used when a bound texture is incomplete */
3037 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3040 * \name Thread safety and statechange notification for texture
3043 * \todo Improve the granularity of locking.
3046 mtx_t TexMutex
; /**< texobj thread safety */
3047 GLuint TextureStateStamp
; /**< state notification for shared tex */
3050 /** Default buffer object for vertex arrays that aren't in VBOs */
3051 struct gl_buffer_object
*NullBufferObj
;
3054 * \name Vertex/geometry/fragment programs
3057 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3058 struct gl_program
*DefaultVertexProgram
;
3059 struct gl_program
*DefaultFragmentProgram
;
3062 /* GL_ATI_fragment_shader */
3063 struct _mesa_HashTable
*ATIShaders
;
3064 struct ati_fragment_shader
*DefaultFragmentShader
;
3066 struct _mesa_HashTable
*BufferObjects
;
3068 /** Table of both gl_shader and gl_shader_program objects */
3069 struct _mesa_HashTable
*ShaderObjects
;
3071 /* GL_EXT_framebuffer_object */
3072 struct _mesa_HashTable
*RenderBuffers
;
3073 struct _mesa_HashTable
*FrameBuffers
;
3076 struct set
*SyncObjects
;
3078 /** GL_ARB_sampler_objects */
3079 struct _mesa_HashTable
*SamplerObjects
;
3082 * Some context in this share group was affected by a GPU reset
3084 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3085 * been affected by a GPU reset must also return
3086 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3088 * Once this field becomes true, it is never reset to false.
3090 bool ShareGroupReset
;
3096 * Renderbuffers represent drawing surfaces such as color, depth and/or
3097 * stencil. A framebuffer object has a set of renderbuffers.
3098 * Drivers will typically derive subclasses of this type.
3100 struct gl_renderbuffer
3102 mtx_t Mutex
; /**< for thread safety */
3103 GLuint ClassID
; /**< Useful for drivers */
3105 GLchar
*Label
; /**< GL_KHR_debug */
3107 GLuint Width
, Height
;
3109 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3110 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3112 * True for renderbuffers that wrap textures, giving the driver a chance to
3113 * flush render caches through the FinishRenderTexture hook.
3115 * Drivers may also set this on renderbuffers other than those generated by
3116 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3117 * called without a rb->TexImage.
3119 GLboolean NeedsFinishRenderTexture
;
3121 GLenum InternalFormat
; /**< The user-specified format */
3122 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3123 GL_STENCIL_INDEX. */
3124 mesa_format Format
; /**< The actual renderbuffer memory format */
3126 * Pointer to the texture image if this renderbuffer wraps a texture,
3129 * Note that the reference on the gl_texture_object containing this
3130 * TexImage is held by the gl_renderbuffer_attachment.
3132 struct gl_texture_image
*TexImage
;
3134 /** Delete this renderbuffer */
3135 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3137 /** Allocate new storage for this renderbuffer */
3138 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3139 struct gl_renderbuffer
*rb
,
3140 GLenum internalFormat
,
3141 GLuint width
, GLuint height
);
3146 * A renderbuffer attachment points to either a texture object (and specifies
3147 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3149 struct gl_renderbuffer_attachment
3151 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3155 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3156 * application supplied renderbuffer object.
3158 struct gl_renderbuffer
*Renderbuffer
;
3161 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3162 * supplied texture object.
3164 struct gl_texture_object
*Texture
;
3165 GLuint TextureLevel
; /**< Attached mipmap level. */
3166 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3167 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3168 * and 2D array textures */
3174 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3175 * In C++ terms, think of this as a base class from which device drivers
3176 * will make derived classes.
3178 struct gl_framebuffer
3180 mtx_t Mutex
; /**< for thread safety */
3182 * If zero, this is a window system framebuffer. If non-zero, this
3183 * is a FBO framebuffer; note that for some devices (i.e. those with
3184 * a natural pixel coordinate system for FBOs that differs from the
3185 * OpenGL/Mesa coordinate system), this means that the viewport,
3186 * polygon face orientation, and polygon stipple will have to be inverted.
3191 GLchar
*Label
; /**< GL_KHR_debug */
3193 GLboolean DeletePending
;
3196 * The framebuffer's visual. Immutable if this is a window system buffer.
3197 * Computed from attachments if user-made FBO.
3199 struct gl_config Visual
;
3202 * Size of frame buffer in pixels. If there are no attachments, then both
3205 GLuint Width
, Height
;
3208 * In the case that the framebuffer has no attachment (i.e.
3209 * GL_ARB_framebuffer_no_attachments) then the geometry of
3210 * the framebuffer is specified by the default values.
3213 GLuint Width
, Height
, Layers
, NumSamples
;
3214 GLboolean FixedSampleLocations
;
3215 /* Derived from NumSamples by the driver so that it can choose a valid
3216 * value for the hardware.
3221 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3222 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3223 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3230 /** \name Derived Z buffer stuff */
3232 GLuint _DepthMax
; /**< Max depth buffer value */
3233 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3234 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3237 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3240 /** Whether one of Attachment has Type != GL_NONE
3241 * NOTE: the values for Width and Height are set to 0 in case of having
3242 * no attachments, a backend driver supporting the extension
3243 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3244 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3245 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3246 * _Ymax do NOT take into account _HasAttachments being false). To get the
3247 * geometry of the framebuffer, the helper functions
3248 * _mesa_geometric_width(),
3249 * _mesa_geometric_height(),
3250 * _mesa_geometric_samples() and
3251 * _mesa_geometric_layers()
3252 * are available that check _HasAttachments.
3254 bool _HasAttachments
;
3256 GLbitfield _IntegerBuffers
; /**< Which color buffers are integer valued */
3258 /* ARB_color_buffer_float */
3259 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3260 GLboolean _HasSNormOrFloatColorBuffer
;
3263 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3264 * is not layered. For cube maps and cube map arrays, each cube face
3265 * counts as a layer. As the case for Width, Height a backend driver
3266 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3267 * in the case that _HasAttachments is false
3269 GLuint MaxNumLayers
;
3271 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3272 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3274 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3275 * attribute group and GL_PIXEL attribute group, respectively.
3277 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3278 GLenum ColorReadBuffer
;
3280 /** Computed from ColorDraw/ReadBuffer above */
3281 GLuint _NumColorDrawBuffers
;
3282 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3283 GLint _ColorReadBufferIndex
; /* -1 = None */
3284 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3285 struct gl_renderbuffer
*_ColorReadBuffer
;
3287 /** Delete this framebuffer */
3288 void (*Delete
)(struct gl_framebuffer
*fb
);
3293 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3297 GLushort RangeMin
; /**< min value exponent */
3298 GLushort RangeMax
; /**< max value exponent */
3299 GLushort Precision
; /**< number of mantissa bits */
3304 * Limits for vertex, geometry and fragment programs/shaders.
3306 struct gl_program_constants
3308 /* logical limits */
3309 GLuint MaxInstructions
;
3310 GLuint MaxAluInstructions
;
3311 GLuint MaxTexInstructions
;
3312 GLuint MaxTexIndirections
;
3315 GLuint MaxAddressRegs
;
3316 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3317 GLuint MaxParameters
;
3318 GLuint MaxLocalParams
;
3319 GLuint MaxEnvParams
;
3320 /* native/hardware limits */
3321 GLuint MaxNativeInstructions
;
3322 GLuint MaxNativeAluInstructions
;
3323 GLuint MaxNativeTexInstructions
;
3324 GLuint MaxNativeTexIndirections
;
3325 GLuint MaxNativeAttribs
;
3326 GLuint MaxNativeTemps
;
3327 GLuint MaxNativeAddressRegs
;
3328 GLuint MaxNativeParameters
;
3330 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3333 * \name Per-stage input / output limits
3335 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3336 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3337 * ES). This is stored as \c gl_constants::MaxVarying.
3339 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3340 * variables. Each stage as a certain number of outputs that it can feed
3341 * to the next stage and a certain number inputs that it can consume from
3342 * the previous stage.
3344 * Vertex shader inputs do not participate this in this accounting.
3345 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3347 * Fragment shader outputs do not participate this in this accounting.
3348 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3351 GLuint MaxInputComponents
;
3352 GLuint MaxOutputComponents
;
3355 /* ES 2.0 and GL_ARB_ES2_compatibility */
3356 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3357 struct gl_precision LowInt
, MediumInt
, HighInt
;
3358 /* GL_ARB_uniform_buffer_object */
3359 GLuint MaxUniformBlocks
;
3360 GLuint MaxCombinedUniformComponents
;
3361 GLuint MaxTextureImageUnits
;
3363 /* GL_ARB_shader_atomic_counters */
3364 GLuint MaxAtomicBuffers
;
3365 GLuint MaxAtomicCounters
;
3367 /* GL_ARB_shader_image_load_store */
3368 GLuint MaxImageUniforms
;
3370 /* GL_ARB_shader_storage_buffer_object */
3371 GLuint MaxShaderStorageBlocks
;
3376 * Constants which may be overridden by device driver during context creation
3377 * but are never changed after that.
3381 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3382 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3383 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3384 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3385 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3386 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3387 GLuint MaxTextureCoordUnits
;
3388 GLuint MaxCombinedTextureImageUnits
;
3389 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3390 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3391 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3392 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3394 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3396 GLuint MaxArrayLockSize
;
3400 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3401 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3402 GLfloat PointSizeGranularity
;
3403 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3404 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3405 GLfloat LineWidthGranularity
;
3407 GLuint MaxClipPlanes
;
3409 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3410 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3412 GLuint MaxViewportWidth
, MaxViewportHeight
;
3413 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3414 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3418 } ViewportBounds
; /**< GL_ARB_viewport_array */
3419 GLuint MaxWindowRectangles
; /**< GL_EXT_window_rectangles */
3421 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3422 GLuint MaxProgramMatrices
;
3423 GLuint MaxProgramMatrixStackDepth
;
3426 GLuint SamplesPassed
;
3429 GLuint PrimitivesGenerated
;
3430 GLuint PrimitivesWritten
;
3431 GLuint VerticesSubmitted
;
3432 GLuint PrimitivesSubmitted
;
3433 GLuint VsInvocations
;
3435 GLuint TessInvocations
;
3436 GLuint GsInvocations
;
3437 GLuint GsPrimitives
;
3438 GLuint FsInvocations
;
3439 GLuint ComputeInvocations
;
3440 GLuint ClInPrimitives
;
3441 GLuint ClOutPrimitives
;
3444 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3446 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3447 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3448 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3451 * GL_ARB_framebuffer_no_attachments
3453 GLuint MaxFramebufferWidth
;
3454 GLuint MaxFramebufferHeight
;
3455 GLuint MaxFramebufferLayers
;
3456 GLuint MaxFramebufferSamples
;
3458 /** Number of varying vectors between any two shader stages. */
3462 * GL_ARB_uniform_buffer_object
3464 GLuint MaxCombinedUniformBlocks
;
3465 GLuint MaxUniformBufferBindings
;
3466 GLuint MaxUniformBlockSize
;
3467 GLuint UniformBufferOffsetAlignment
;
3471 * GL_ARB_shader_storage_buffer_object
3473 GLuint MaxCombinedShaderStorageBlocks
;
3474 GLuint MaxShaderStorageBufferBindings
;
3475 GLuint MaxShaderStorageBlockSize
;
3476 GLuint ShaderStorageBufferOffsetAlignment
;
3480 * GL_ARB_explicit_uniform_location
3482 GLuint MaxUserAssignableUniformLocations
;
3484 /** geometry shader */
3485 GLuint MaxGeometryOutputVertices
;
3486 GLuint MaxGeometryTotalOutputComponents
;
3488 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3491 * Changes default GLSL extension behavior from "error" to "warn". It's out
3492 * of spec, but it can make some apps work that otherwise wouldn't.
3494 GLboolean ForceGLSLExtensionsWarn
;
3497 * If non-zero, forces GLSL shaders to behave as if they began
3498 * with "#version ForceGLSLVersion".
3500 GLuint ForceGLSLVersion
;
3503 * Allow GLSL #extension directives in the middle of shaders.
3505 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3508 * Allow creating a higher compat profile (version 3.1+) for apps that
3509 * request it. Be careful when adding that driconf option because some
3510 * features are unimplemented and might not work correctly.
3512 GLboolean AllowHigherCompatVersion
;
3515 * Force uninitialized variables to default to zero.
3517 GLboolean GLSLZeroInit
;
3520 * Does the driver support real 32-bit integers? (Otherwise, integers are
3521 * simulated via floats.)
3523 GLboolean NativeIntegers
;
3526 * Does VertexID count from zero or from base vertex?
3529 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3530 * ignored and need not be set.
3532 bool VertexID_is_zero_based
;
3535 * If the driver supports real 32-bit integers, what integer value should be
3536 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3538 GLuint UniformBooleanTrue
;
3541 * Maximum amount of time, measured in nanseconds, that the server can wait.
3543 GLuint64 MaxServerWaitTimeout
;
3545 /** GL_EXT_provoking_vertex */
3546 GLboolean QuadsFollowProvokingVertexConvention
;
3548 /** GL_ARB_viewport_array */
3549 GLenum LayerAndVPIndexProvokingVertex
;
3551 /** OpenGL version 3.0 */
3552 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3554 /** OpenGL version 3.2 */
3555 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3557 /** OpenGL version 4.4 */
3558 GLuint MaxVertexAttribStride
;
3560 /** GL_EXT_transform_feedback */
3561 GLuint MaxTransformFeedbackBuffers
;
3562 GLuint MaxTransformFeedbackSeparateComponents
;
3563 GLuint MaxTransformFeedbackInterleavedComponents
;
3564 GLuint MaxVertexStreams
;
3566 /** GL_EXT_gpu_shader4 */
3567 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3569 /** GL_ARB_texture_gather */
3570 GLuint MinProgramTextureGatherOffset
;
3571 GLuint MaxProgramTextureGatherOffset
;
3572 GLuint MaxProgramTextureGatherComponents
;
3574 /* GL_ARB_robustness */
3575 GLenum ResetStrategy
;
3577 /* GL_KHR_robustness */
3578 GLboolean RobustAccess
;
3580 /* GL_ARB_blend_func_extended */
3581 GLuint MaxDualSourceDrawBuffers
;
3584 * Whether the implementation strips out and ignores texture borders.
3586 * Many GPU hardware implementations don't support rendering with texture
3587 * borders and mipmapped textures. (Note: not static border color, but the
3588 * old 1-pixel border around each edge). Implementations then have to do
3589 * slow fallbacks to be correct, or just ignore the border and be fast but
3590 * wrong. Setting the flag strips the border off of TexImage calls,
3591 * providing "fast but wrong" at significantly reduced driver complexity.
3593 * Texture borders are deprecated in GL 3.0.
3595 GLboolean StripTextureBorder
;
3598 * For drivers which can do a better job at eliminating unused uniforms
3599 * than the GLSL compiler.
3601 * XXX Remove these as soon as a better solution is available.
3603 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3605 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3606 bool GLSLFragCoordIsSysVal
;
3607 bool GLSLFrontFacingIsSysVal
;
3610 * Run the minimum amount of GLSL optimizations to be able to link
3611 * shaders optimally (eliminate dead varyings and uniforms) and just do
3612 * all the necessary lowering.
3614 bool GLSLOptimizeConservatively
;
3617 * True if gl_TessLevelInner/Outer[] in the TES should be inputs
3618 * (otherwise, they're system values).
3620 bool GLSLTessLevelsAsInputs
;
3623 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3624 * than passing the transform feedback object to the drawing function.
3626 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3628 /** GL_ARB_map_buffer_alignment */
3629 GLuint MinMapBufferAlignment
;
3632 * Disable varying packing. This is out of spec, but potentially useful
3633 * for older platforms that supports a limited number of texture
3634 * indirections--on these platforms, unpacking the varyings in the fragment
3635 * shader increases the number of texture indirections by 1, which might
3636 * make some shaders not executable at all.
3638 * Drivers that support transform feedback must set this value to GL_FALSE.
3640 GLboolean DisableVaryingPacking
;
3643 * Should meaningful names be generated for compiler temporary variables?
3645 * Generally, it is not useful to have the compiler generate "meaningful"
3646 * names for temporary variables that it creates. This can, however, be a
3647 * useful debugging aid. In Mesa debug builds or release builds when
3648 * MESA_GLSL is set at run-time, meaningful names will be generated.
3649 * Drivers can also force names to be generated by setting this field.
3650 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3651 * vertex shader assembly) is set at run-time.
3653 bool GenerateTemporaryNames
;
3656 * Maximum value supported for an index in DrawElements and friends.
3658 * This must be at least (1ull<<24)-1. The default value is
3661 * \since ES 3.0 or GL_ARB_ES3_compatibility
3662 * \sa _mesa_init_constants
3664 GLuint64 MaxElementIndex
;
3667 * Disable interpretation of line continuations (lines ending with a
3668 * backslash character ('\') in GLSL source.
3670 GLboolean DisableGLSLLineContinuations
;
3672 /** GL_ARB_texture_multisample */
3673 GLint MaxColorTextureSamples
;
3674 GLint MaxDepthTextureSamples
;
3675 GLint MaxIntegerSamples
;
3678 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3679 * samples are laid out in a rectangular grid roughly corresponding to
3680 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3681 * are used to map indices of rectangular grid to sample numbers within
3682 * a pixel. This mapping of indices to sample numbers must be initialized
3683 * by the driver for the target hardware. For example, if we have the 8X
3684 * MSAA sample number layout (sample positions) for XYZ hardware:
3686 * sample indices layout sample number layout
3687 * --------- ---------
3688 * | 0 | 1 | | a | b |
3689 * --------- ---------
3690 * | 2 | 3 | | c | d |
3691 * --------- ---------
3692 * | 4 | 5 | | e | f |
3693 * --------- ---------
3694 * | 6 | 7 | | g | h |
3695 * --------- ---------
3697 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3699 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3701 * SampleMap8x = {a, b, c, d, e, f, g, h};
3703 * Follow the logic for sample counts 2-8.
3705 * For 16x the sample indices layout as a 4x4 grid as follows:
3717 uint8_t SampleMap2x
[2];
3718 uint8_t SampleMap4x
[4];
3719 uint8_t SampleMap8x
[8];
3720 uint8_t SampleMap16x
[16];
3722 /** GL_ARB_shader_atomic_counters */
3723 GLuint MaxAtomicBufferBindings
;
3724 GLuint MaxAtomicBufferSize
;
3725 GLuint MaxCombinedAtomicBuffers
;
3726 GLuint MaxCombinedAtomicCounters
;
3728 /** GL_ARB_vertex_attrib_binding */
3729 GLint MaxVertexAttribRelativeOffset
;
3730 GLint MaxVertexAttribBindings
;
3732 /* GL_ARB_shader_image_load_store */
3733 GLuint MaxImageUnits
;
3734 GLuint MaxCombinedShaderOutputResources
;
3735 GLuint MaxImageSamples
;
3736 GLuint MaxCombinedImageUniforms
;
3738 /** GL_ARB_compute_shader */
3739 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3740 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3741 GLuint MaxComputeWorkGroupInvocations
;
3742 GLuint MaxComputeSharedMemorySize
;
3744 /** GL_ARB_compute_variable_group_size */
3745 GLuint MaxComputeVariableGroupSize
[3]; /* Array of x, y, z dimensions */
3746 GLuint MaxComputeVariableGroupInvocations
;
3748 /** GL_ARB_gpu_shader5 */
3749 GLfloat MinFragmentInterpolationOffset
;
3750 GLfloat MaxFragmentInterpolationOffset
;
3752 GLboolean FakeSWMSAA
;
3754 /** GL_KHR_context_flush_control */
3755 GLenum ContextReleaseBehavior
;
3757 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3759 /** GL_ARB_tessellation_shader */
3760 GLuint MaxPatchVertices
;
3761 GLuint MaxTessGenLevel
;
3762 GLuint MaxTessPatchComponents
;
3763 GLuint MaxTessControlTotalOutputComponents
;
3764 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3765 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3766 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3767 bool PrimitiveRestartForPatches
;
3768 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3769 * gl_LocalInvocationIndex based on
3770 * other builtin variables. */
3772 /** GL_OES_primitive_bounding_box */
3773 bool NoPrimitiveBoundingBoxOutput
;
3778 * Enable flag for each OpenGL extension. Different device drivers will
3779 * enable different extensions at runtime.
3781 struct gl_extensions
3783 GLboolean dummy
; /* don't remove this! */
3784 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3785 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3786 GLboolean ANGLE_texture_compression_dxt
;
3787 GLboolean ARB_ES2_compatibility
;
3788 GLboolean ARB_ES3_compatibility
;
3789 GLboolean ARB_ES3_1_compatibility
;
3790 GLboolean ARB_ES3_2_compatibility
;
3791 GLboolean ARB_arrays_of_arrays
;
3792 GLboolean ARB_base_instance
;
3793 GLboolean ARB_blend_func_extended
;
3794 GLboolean ARB_buffer_storage
;
3795 GLboolean ARB_clear_texture
;
3796 GLboolean ARB_clip_control
;
3797 GLboolean ARB_color_buffer_float
;
3798 GLboolean ARB_compute_shader
;
3799 GLboolean ARB_compute_variable_group_size
;
3800 GLboolean ARB_conditional_render_inverted
;
3801 GLboolean ARB_conservative_depth
;
3802 GLboolean ARB_copy_image
;
3803 GLboolean ARB_cull_distance
;
3804 GLboolean ARB_depth_buffer_float
;
3805 GLboolean ARB_depth_clamp
;
3806 GLboolean ARB_depth_texture
;
3807 GLboolean ARB_derivative_control
;
3808 GLboolean ARB_draw_buffers_blend
;
3809 GLboolean ARB_draw_elements_base_vertex
;
3810 GLboolean ARB_draw_indirect
;
3811 GLboolean ARB_draw_instanced
;
3812 GLboolean ARB_fragment_coord_conventions
;
3813 GLboolean ARB_fragment_layer_viewport
;
3814 GLboolean ARB_fragment_program
;
3815 GLboolean ARB_fragment_program_shadow
;
3816 GLboolean ARB_fragment_shader
;
3817 GLboolean ARB_framebuffer_no_attachments
;
3818 GLboolean ARB_framebuffer_object
;
3819 GLboolean ARB_enhanced_layouts
;
3820 GLboolean ARB_explicit_attrib_location
;
3821 GLboolean ARB_explicit_uniform_location
;
3822 GLboolean ARB_gpu_shader5
;
3823 GLboolean ARB_gpu_shader_fp64
;
3824 GLboolean ARB_gpu_shader_int64
;
3825 GLboolean ARB_half_float_vertex
;
3826 GLboolean ARB_indirect_parameters
;
3827 GLboolean ARB_instanced_arrays
;
3828 GLboolean ARB_internalformat_query
;
3829 GLboolean ARB_internalformat_query2
;
3830 GLboolean ARB_map_buffer_range
;
3831 GLboolean ARB_occlusion_query
;
3832 GLboolean ARB_occlusion_query2
;
3833 GLboolean ARB_pipeline_statistics_query
;
3834 GLboolean ARB_point_sprite
;
3835 GLboolean ARB_post_depth_coverage
;
3836 GLboolean ARB_query_buffer_object
;
3837 GLboolean ARB_robust_buffer_access_behavior
;
3838 GLboolean ARB_sample_shading
;
3839 GLboolean ARB_seamless_cube_map
;
3840 GLboolean ARB_shader_atomic_counter_ops
;
3841 GLboolean ARB_shader_atomic_counters
;
3842 GLboolean ARB_shader_bit_encoding
;
3843 GLboolean ARB_shader_clock
;
3844 GLboolean ARB_shader_draw_parameters
;
3845 GLboolean ARB_shader_group_vote
;
3846 GLboolean ARB_shader_image_load_store
;
3847 GLboolean ARB_shader_image_size
;
3848 GLboolean ARB_shader_precision
;
3849 GLboolean ARB_shader_stencil_export
;
3850 GLboolean ARB_shader_storage_buffer_object
;
3851 GLboolean ARB_shader_subroutine
;
3852 GLboolean ARB_shader_texture_image_samples
;
3853 GLboolean ARB_shader_texture_lod
;
3854 GLboolean ARB_shader_viewport_layer_array
;
3855 GLboolean ARB_shading_language_packing
;
3856 GLboolean ARB_shading_language_420pack
;
3857 GLboolean ARB_shadow
;
3858 GLboolean ARB_stencil_texturing
;
3860 GLboolean ARB_tessellation_shader
;
3861 GLboolean ARB_texture_border_clamp
;
3862 GLboolean ARB_texture_buffer_object
;
3863 GLboolean ARB_texture_buffer_object_rgb32
;
3864 GLboolean ARB_texture_buffer_range
;
3865 GLboolean ARB_texture_compression_bptc
;
3866 GLboolean ARB_texture_compression_rgtc
;
3867 GLboolean ARB_texture_cube_map
;
3868 GLboolean ARB_texture_cube_map_array
;
3869 GLboolean ARB_texture_env_combine
;
3870 GLboolean ARB_texture_env_crossbar
;
3871 GLboolean ARB_texture_env_dot3
;
3872 GLboolean ARB_texture_float
;
3873 GLboolean ARB_texture_gather
;
3874 GLboolean ARB_texture_mirror_clamp_to_edge
;
3875 GLboolean ARB_texture_multisample
;
3876 GLboolean ARB_texture_non_power_of_two
;
3877 GLboolean ARB_texture_stencil8
;
3878 GLboolean ARB_texture_query_levels
;
3879 GLboolean ARB_texture_query_lod
;
3880 GLboolean ARB_texture_rg
;
3881 GLboolean ARB_texture_rgb10_a2ui
;
3882 GLboolean ARB_texture_view
;
3883 GLboolean ARB_timer_query
;
3884 GLboolean ARB_transform_feedback2
;
3885 GLboolean ARB_transform_feedback3
;
3886 GLboolean ARB_transform_feedback_instanced
;
3887 GLboolean ARB_uniform_buffer_object
;
3888 GLboolean ARB_vertex_attrib_64bit
;
3889 GLboolean ARB_vertex_program
;
3890 GLboolean ARB_vertex_shader
;
3891 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3892 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3893 GLboolean ARB_viewport_array
;
3894 GLboolean EXT_blend_color
;
3895 GLboolean EXT_blend_equation_separate
;
3896 GLboolean EXT_blend_func_separate
;
3897 GLboolean EXT_blend_minmax
;
3898 GLboolean EXT_depth_bounds_test
;
3899 GLboolean EXT_draw_buffers2
;
3900 GLboolean EXT_framebuffer_multisample
;
3901 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3902 GLboolean EXT_framebuffer_sRGB
;
3903 GLboolean EXT_gpu_program_parameters
;
3904 GLboolean EXT_gpu_shader4
;
3905 GLboolean EXT_packed_float
;
3906 GLboolean EXT_pixel_buffer_object
;
3907 GLboolean EXT_point_parameters
;
3908 GLboolean EXT_polygon_offset_clamp
;
3909 GLboolean EXT_provoking_vertex
;
3910 GLboolean EXT_shader_integer_mix
;
3911 GLboolean EXT_shader_samples_identical
;
3912 GLboolean EXT_stencil_two_side
;
3913 GLboolean EXT_texture_array
;
3914 GLboolean EXT_texture_compression_latc
;
3915 GLboolean EXT_texture_compression_s3tc
;
3916 GLboolean EXT_texture_env_dot3
;
3917 GLboolean EXT_texture_filter_anisotropic
;
3918 GLboolean EXT_texture_integer
;
3919 GLboolean EXT_texture_mirror_clamp
;
3920 GLboolean EXT_texture_shared_exponent
;
3921 GLboolean EXT_texture_snorm
;
3922 GLboolean EXT_texture_sRGB
;
3923 GLboolean EXT_texture_sRGB_decode
;
3924 GLboolean EXT_texture_swizzle
;
3925 GLboolean EXT_transform_feedback
;
3926 GLboolean EXT_timer_query
;
3927 GLboolean EXT_vertex_array_bgra
;
3928 GLboolean EXT_window_rectangles
;
3929 GLboolean OES_copy_image
;
3930 GLboolean OES_primitive_bounding_box
;
3931 GLboolean OES_sample_variables
;
3932 GLboolean OES_standard_derivatives
;
3933 GLboolean OES_texture_buffer
;
3934 GLboolean OES_texture_cube_map_array
;
3935 GLboolean OES_viewport_array
;
3936 /* vendor extensions */
3937 GLboolean AMD_performance_monitor
;
3938 GLboolean AMD_pinned_memory
;
3939 GLboolean AMD_seamless_cubemap_per_texture
;
3940 GLboolean AMD_vertex_shader_layer
;
3941 GLboolean AMD_vertex_shader_viewport_index
;
3942 GLboolean ANDROID_extension_pack_es31a
;
3943 GLboolean APPLE_object_purgeable
;
3944 GLboolean ATI_meminfo
;
3945 GLboolean ATI_texture_compression_3dc
;
3946 GLboolean ATI_texture_mirror_once
;
3947 GLboolean ATI_texture_env_combine3
;
3948 GLboolean ATI_fragment_shader
;
3949 GLboolean ATI_separate_stencil
;
3950 GLboolean GREMEDY_string_marker
;
3951 GLboolean INTEL_conservative_rasterization
;
3952 GLboolean INTEL_performance_query
;
3953 GLboolean KHR_blend_equation_advanced
;
3954 GLboolean KHR_blend_equation_advanced_coherent
;
3955 GLboolean KHR_robustness
;
3956 GLboolean KHR_texture_compression_astc_hdr
;
3957 GLboolean KHR_texture_compression_astc_ldr
;
3958 GLboolean KHR_texture_compression_astc_sliced_3d
;
3959 GLboolean MESA_pack_invert
;
3960 GLboolean MESA_shader_framebuffer_fetch
;
3961 GLboolean MESA_shader_framebuffer_fetch_non_coherent
;
3962 GLboolean MESA_shader_integer_functions
;
3963 GLboolean MESA_ycbcr_texture
;
3964 GLboolean NV_conditional_render
;
3965 GLboolean NV_fog_distance
;
3966 GLboolean NV_point_sprite
;
3967 GLboolean NV_primitive_restart
;
3968 GLboolean NV_texture_barrier
;
3969 GLboolean NV_texture_env_combine4
;
3970 GLboolean NV_texture_rectangle
;
3971 GLboolean NV_vdpau_interop
;
3972 GLboolean NVX_gpu_memory_info
;
3973 GLboolean TDFX_texture_compression_FXT1
;
3974 GLboolean OES_EGL_image
;
3975 GLboolean OES_draw_texture
;
3976 GLboolean OES_depth_texture_cube_map
;
3977 GLboolean OES_EGL_image_external
;
3978 GLboolean OES_texture_float
;
3979 GLboolean OES_texture_float_linear
;
3980 GLboolean OES_texture_half_float
;
3981 GLboolean OES_texture_half_float_linear
;
3982 GLboolean OES_compressed_ETC1_RGB8_texture
;
3983 GLboolean OES_geometry_shader
;
3984 GLboolean OES_texture_compression_astc
;
3985 GLboolean extension_sentinel
;
3986 /** The extension string */
3987 const GLubyte
*String
;
3988 /** Number of supported extensions */
3991 * The context version which extension helper functions compare against.
3992 * By default, the value is equal to ctx->Version. This changes to ~0
3993 * while meta is in progress.
4000 * A stack of matrices (projection, modelview, color, texture, etc).
4002 struct gl_matrix_stack
4004 GLmatrix
*Top
; /**< points into Stack */
4005 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
4006 unsigned StackSize
; /**< Number of elements in Stack */
4007 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
4008 GLuint MaxDepth
; /**< size of Stack[] array */
4009 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
4014 * \name Bits for image transfer operations
4015 * \sa __struct gl_contextRec::ImageTransferState.
4018 #define IMAGE_SCALE_BIAS_BIT 0x1
4019 #define IMAGE_SHIFT_OFFSET_BIT 0x2
4020 #define IMAGE_MAP_COLOR_BIT 0x4
4021 #define IMAGE_CLAMP_BIT 0x800
4024 /** Pixel Transfer ops */
4025 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4026 IMAGE_SHIFT_OFFSET_BIT | \
4027 IMAGE_MAP_COLOR_BIT)
4030 * \name Bits to indicate what state has changed.
4033 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4034 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4035 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4036 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4037 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4038 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4039 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4040 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4041 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4042 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4043 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4044 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4045 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4046 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4047 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4048 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4049 #define _NEW_TEXTURE (1u << 16) /**< gl_context::Texture */
4050 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4051 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4052 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4053 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4054 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4055 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4056 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4057 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4058 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4059 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4060 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4061 #define _NEW_BUFFER_OBJECT (1u << 28)
4062 #define _NEW_FRAG_CLAMP (1u << 29)
4063 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4064 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4070 * Composite state flags
4073 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4079 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4089 /* This has to be included here. */
4094 * Display list flags.
4095 * Strictly this is a tnl-private concept, but it doesn't seem
4096 * worthwhile adding a tnl private structure just to hold this one bit
4099 #define DLIST_DANGLING_REFS 0x1
4102 /** Opaque declaration of display list payload data type */
4103 union gl_dlist_node
;
4107 * Provide a location where information about a display list can be
4108 * collected. Could be extended with driverPrivate structures,
4109 * etc. in the future.
4111 struct gl_display_list
4114 GLchar
*Label
; /**< GL_KHR_debug */
4115 GLbitfield Flags
; /**< DLIST_x flags */
4116 /** The dlist commands are in a linked list of nodes */
4117 union gl_dlist_node
*Head
;
4122 * State used during display list compilation and execution.
4124 struct gl_dlist_state
4126 GLuint CallDepth
; /**< Current recursion calling depth */
4128 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4129 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4130 GLuint CurrentPos
; /**< Index into current block of nodes */
4132 GLvertexformat ListVtxfmt
;
4134 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4135 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4137 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4138 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4141 /* State known to have been set by the currently-compiling display
4142 * list. Used to eliminate some redundant state changes.
4150 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4151 * to small enums suitable for use as an array index.
4154 enum mesa_debug_source
{
4155 MESA_DEBUG_SOURCE_API
,
4156 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4157 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4158 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4159 MESA_DEBUG_SOURCE_APPLICATION
,
4160 MESA_DEBUG_SOURCE_OTHER
,
4161 MESA_DEBUG_SOURCE_COUNT
4164 enum mesa_debug_type
{
4165 MESA_DEBUG_TYPE_ERROR
,
4166 MESA_DEBUG_TYPE_DEPRECATED
,
4167 MESA_DEBUG_TYPE_UNDEFINED
,
4168 MESA_DEBUG_TYPE_PORTABILITY
,
4169 MESA_DEBUG_TYPE_PERFORMANCE
,
4170 MESA_DEBUG_TYPE_OTHER
,
4171 MESA_DEBUG_TYPE_MARKER
,
4172 MESA_DEBUG_TYPE_PUSH_GROUP
,
4173 MESA_DEBUG_TYPE_POP_GROUP
,
4174 MESA_DEBUG_TYPE_COUNT
4177 enum mesa_debug_severity
{
4178 MESA_DEBUG_SEVERITY_LOW
,
4179 MESA_DEBUG_SEVERITY_MEDIUM
,
4180 MESA_DEBUG_SEVERITY_HIGH
,
4181 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4182 MESA_DEBUG_SEVERITY_COUNT
4188 * Driver-specific state flags.
4190 * These are or'd with gl_context::NewDriverState to notify a driver about
4191 * a state change. The driver sets the flags at context creation and
4192 * the meaning of the bits set is opaque to core Mesa.
4194 struct gl_driver_flags
4196 /** gl_context::Array::_DrawArrays (vertex array state) */
4199 /** gl_context::TransformFeedback::CurrentObject */
4200 uint64_t NewTransformFeedback
;
4202 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4203 uint64_t NewTransformFeedbackProg
;
4205 /** gl_context::RasterDiscard */
4206 uint64_t NewRasterizerDiscard
;
4209 * gl_context::UniformBufferBindings
4210 * gl_shader_program::UniformBlocks
4212 uint64_t NewUniformBuffer
;
4215 * gl_context::ShaderStorageBufferBindings
4216 * gl_shader_program::ShaderStorageBlocks
4218 uint64_t NewShaderStorageBuffer
;
4220 uint64_t NewTextureBuffer
;
4223 * gl_context::AtomicBufferBindings
4225 uint64_t NewAtomicBuffer
;
4228 * gl_context::ImageUnits
4230 uint64_t NewImageUnits
;
4233 * gl_context::TessCtrlProgram::patch_default_*
4235 uint64_t NewDefaultTessLevels
;
4238 * gl_context::IntelConservativeRasterization
4240 uint64_t NewIntelConservativeRasterization
;
4243 struct gl_uniform_buffer_binding
4245 struct gl_buffer_object
*BufferObject
;
4246 /** Start of uniform block data in the buffer */
4248 /** Size of data allowed to be referenced from the buffer (in bytes) */
4251 * glBindBufferBase() indicates that the Size should be ignored and only
4252 * limited by the current size of the BufferObject.
4254 GLboolean AutomaticSize
;
4257 struct gl_shader_storage_buffer_binding
4259 struct gl_buffer_object
*BufferObject
;
4260 /** Start of shader storage block data in the buffer */
4262 /** Size of data allowed to be referenced from the buffer (in bytes) */
4265 * glBindBufferBase() indicates that the Size should be ignored and only
4266 * limited by the current size of the BufferObject.
4268 GLboolean AutomaticSize
;
4272 * ARB_shader_image_load_store image unit.
4274 struct gl_image_unit
4277 * Texture object bound to this unit.
4279 struct gl_texture_object
*TexObj
;
4282 * Level of the texture object bound to this unit.
4287 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4288 * GL_FALSE if only some specific layer of the texture is bound.
4294 * Layer of the texture object bound to this unit as specified by the
4300 * Layer of the texture object bound to this unit, or zero if the
4301 * whole level is bound.
4306 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4307 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4312 * GL internal format that determines the interpretation of the
4313 * image memory when shader image operations are performed through
4319 * Mesa format corresponding to \c Format.
4321 mesa_format _ActualFormat
;
4326 * Binding point for an atomic counter buffer object.
4328 struct gl_atomic_buffer_binding
4330 struct gl_buffer_object
*BufferObject
;
4336 * Shader subroutines storage
4338 struct gl_subroutine_index_binding
4345 * Mesa rendering context.
4347 * This is the central context data structure for Mesa. Almost all
4348 * OpenGL state is contained in this structure.
4349 * Think of this as a base class from which device drivers will derive
4354 /** State possibly shared with other contexts in the address space */
4355 struct gl_shared_state
*Shared
;
4357 /** \name API function pointer tables */
4361 * The current dispatch table for non-displaylist-saving execution, either
4362 * BeginEnd or OutsideBeginEnd
4364 struct _glapi_table
*Exec
;
4366 * The normal dispatch table for non-displaylist-saving, non-begin/end
4368 struct _glapi_table
*OutsideBeginEnd
;
4369 /** The dispatch table used between glNewList() and glEndList() */
4370 struct _glapi_table
*Save
;
4372 * The dispatch table used between glBegin() and glEnd() (outside of a
4373 * display list). Only valid functions between those two are set, which is
4374 * mostly just the set in a GLvertexformat struct.
4376 struct _glapi_table
*BeginEnd
;
4378 * Dispatch table for when a graphics reset has happened.
4380 struct _glapi_table
*ContextLost
;
4382 * Tracks the current dispatch table out of the 4 above, so that it can be
4383 * re-set on glXMakeCurrent().
4385 struct _glapi_table
*CurrentDispatch
;
4388 struct gl_config Visual
;
4389 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4390 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4391 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4392 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4395 * Device driver function pointer table
4397 struct dd_function_table Driver
;
4399 /** Core/Driver constants */
4400 struct gl_constants Const
;
4402 /** \name The various 4x4 matrix stacks */
4404 struct gl_matrix_stack ModelviewMatrixStack
;
4405 struct gl_matrix_stack ProjectionMatrixStack
;
4406 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4407 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4408 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4411 /** Combined modelview and projection matrix */
4412 GLmatrix _ModelProjectMatrix
;
4414 /** \name Display lists */
4415 struct gl_dlist_state ListState
;
4417 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4418 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4420 /** Extension information */
4421 struct gl_extensions Extensions
;
4423 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4425 char *VersionString
;
4427 /** \name State attribute stack (for glPush/PopAttrib) */
4429 GLuint AttribStackDepth
;
4430 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4433 /** \name Renderer attribute groups
4435 * We define a struct for each attribute group to make pushing and popping
4436 * attributes easy. Also it's a good organization.
4439 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4440 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4441 struct gl_current_attrib Current
; /**< Current attributes */
4442 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4443 struct gl_eval_attrib Eval
; /**< Eval attributes */
4444 struct gl_fog_attrib Fog
; /**< Fog attributes */
4445 struct gl_hint_attrib Hint
; /**< Hint attributes */
4446 struct gl_light_attrib Light
; /**< Light attributes */
4447 struct gl_line_attrib Line
; /**< Line attributes */
4448 struct gl_list_attrib List
; /**< List attributes */
4449 struct gl_multisample_attrib Multisample
;
4450 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4451 struct gl_point_attrib Point
; /**< Point attributes */
4452 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4453 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4454 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4455 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4456 struct gl_texture_attrib Texture
; /**< Texture attributes */
4457 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4458 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4461 /** \name Client attribute stack */
4463 GLuint ClientAttribStackDepth
;
4464 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4467 /** \name Client attribute groups */
4469 struct gl_array_attrib Array
; /**< Vertex arrays */
4470 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4471 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4472 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4475 /** \name Other assorted state (not pushed/popped on attribute stack) */
4477 struct gl_pixelmaps PixelMaps
;
4479 struct gl_evaluators EvalMap
; /**< All evaluators */
4480 struct gl_feedback Feedback
; /**< Feedback */
4481 struct gl_selection Select
; /**< Selection */
4483 struct gl_program_state Program
; /**< general program state */
4484 struct gl_vertex_program_state VertexProgram
;
4485 struct gl_fragment_program_state FragmentProgram
;
4486 struct gl_geometry_program_state GeometryProgram
;
4487 struct gl_compute_program_state ComputeProgram
;
4488 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4489 struct gl_tess_eval_program_state TessEvalProgram
;
4490 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4492 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4493 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4496 * Current active shader pipeline state
4498 * Almost all internal users want ::_Shader instead of ::Shader. The
4499 * exceptions are bits of legacy GLSL API that do not know about separate
4502 * If a program is active via \c glUseProgram, this will point to
4505 * If a program pipeline is active via \c glBindProgramPipeline, this will
4506 * point to \c ::Pipeline.Current.
4508 * If neither a program nor a program pipeline is active, this will point to
4509 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4512 struct gl_pipeline_object
*_Shader
;
4514 struct gl_query_state Query
; /**< occlusion, timer queries */
4516 struct gl_transform_feedback_state TransformFeedback
;
4518 struct gl_perf_monitor_state PerfMonitor
;
4520 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4521 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4522 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4524 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4525 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4527 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4530 * Current GL_ARB_uniform_buffer_object binding referenced by
4531 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4533 struct gl_buffer_object
*UniformBuffer
;
4536 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4537 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4539 struct gl_buffer_object
*ShaderStorageBuffer
;
4542 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4543 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4544 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4547 struct gl_uniform_buffer_binding
4548 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4551 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4552 * and GL 4.3. This is set up using glBindBufferRange() or
4553 * glBindBufferBase(). They are associated with shader storage blocks by
4554 * glShaderStorageBlockBinding()'s state in the shader program.
4556 struct gl_shader_storage_buffer_binding
4557 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4560 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4563 struct gl_buffer_object
*AtomicBuffer
;
4566 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4569 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4572 * Array of atomic counter buffer binding points.
4574 struct gl_atomic_buffer_binding
4575 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4578 * Array of image units for ARB_shader_image_load_store.
4580 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4582 struct gl_subroutine_index_binding SubroutineIndex
[MESA_SHADER_STAGES
];
4585 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4587 /* GL_EXT_framebuffer_object */
4588 struct gl_renderbuffer
*CurrentRenderbuffer
;
4590 GLenum ErrorValue
; /**< Last error code */
4593 * Recognize and silence repeated error debug messages in buggy apps.
4595 const char *ErrorDebugFmtString
;
4596 GLuint ErrorDebugCount
;
4598 /* GL_ARB_debug_output/GL_KHR_debug */
4600 struct gl_debug_state
*Debug
;
4602 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4603 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4604 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4606 struct gl_driver_flags DriverFlags
;
4608 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4610 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4612 /** \name Derived state */
4613 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4614 GLfloat _EyeZDir
[3];
4615 GLfloat _ModelViewInvScale
;
4616 GLboolean _NeedEyeCoords
;
4617 GLboolean _ForceEyeCoords
;
4619 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4621 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4623 /** \name For debugging/development only */
4625 GLboolean FirstTimeCurrent
;
4629 * False if this context was created without a config. This is needed
4630 * because the initial state of glDrawBuffers depends on this
4632 GLboolean HasConfig
;
4634 /** software compression/decompression supported or not */
4635 GLboolean Mesa_DXTn
;
4637 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4639 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4640 GLboolean IntelConservativeRasterization
; /**< GL_INTEL_CONSERVATIVE_RASTERIZATION */
4643 * \name Hooks for module contexts.
4645 * These will eventually live in the driver or elsewhere.
4648 void *swrast_context
;
4649 void *swsetup_context
;
4650 void *swtnl_context
;
4651 struct vbo_context
*vbo_context
;
4652 struct st_context
*st
;
4657 * \name NV_vdpau_interop
4660 const void *vdpDevice
;
4661 const void *vdpGetProcAddress
;
4662 struct set
*vdpSurfaces
;
4666 * Has this context observed a GPU reset in any context in the share group?
4668 * Once this field becomes true, it is never reset to false.
4670 GLboolean ShareGroupReset
;
4673 * \name OES_primitive_bounding_box
4675 * Stores the arguments to glPrimitiveBoundingBox
4677 GLfloat PrimitiveBoundingBox
[8];
4679 struct disk_cache
*Cache
;
4683 * Information about memory usage. All sizes are in kilobytes.
4685 struct gl_memory_info
4687 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4688 unsigned avail_device_memory
; /**< free device memory at the moment */
4689 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4690 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4691 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4692 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4696 extern int MESA_VERBOSE
;
4697 extern int MESA_DEBUG_FLAGS
;
4698 # define MESA_FUNCTION __func__
4700 # define MESA_VERBOSE 0
4701 # define MESA_DEBUG_FLAGS 0
4702 # define MESA_FUNCTION "a function"
4706 /** The MESA_VERBOSE var is a bitmask of these flags */
4709 VERBOSE_VARRAY
= 0x0001,
4710 VERBOSE_TEXTURE
= 0x0002,
4711 VERBOSE_MATERIAL
= 0x0004,
4712 VERBOSE_PIPELINE
= 0x0008,
4713 VERBOSE_DRIVER
= 0x0010,
4714 VERBOSE_STATE
= 0x0020,
4715 VERBOSE_API
= 0x0040,
4716 VERBOSE_DISPLAY_LIST
= 0x0100,
4717 VERBOSE_LIGHTING
= 0x0200,
4718 VERBOSE_PRIMS
= 0x0400,
4719 VERBOSE_VERTS
= 0x0800,
4720 VERBOSE_DISASSEM
= 0x1000,
4721 VERBOSE_DRAW
= 0x2000,
4722 VERBOSE_SWAPBUFFERS
= 0x4000
4726 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4729 DEBUG_SILENT
= (1 << 0),
4730 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4731 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4732 DEBUG_INCOMPLETE_FBO
= (1 << 3),
4733 DEBUG_CONTEXT
= (1 << 4)
4740 #endif /* MTYPES_H */