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 */
152 * Bit flags for all renderbuffers
154 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
155 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
156 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
157 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
158 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
159 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
160 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
161 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
162 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
163 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
164 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
165 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
166 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
167 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
168 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
169 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
170 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
171 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
172 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
175 * Mask of all the color buffer bits (but not accum).
177 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
178 BUFFER_BIT_BACK_LEFT | \
179 BUFFER_BIT_FRONT_RIGHT | \
180 BUFFER_BIT_BACK_RIGHT | \
182 BUFFER_BIT_COLOR0 | \
183 BUFFER_BIT_COLOR1 | \
184 BUFFER_BIT_COLOR2 | \
185 BUFFER_BIT_COLOR3 | \
186 BUFFER_BIT_COLOR4 | \
187 BUFFER_BIT_COLOR5 | \
188 BUFFER_BIT_COLOR6 | \
192 * Framebuffer configuration (aka visual / pixelformat)
193 * Note: some of these fields should be boolean, but it appears that
194 * code in drivers/dri/common/util.c requires int-sized fields.
200 GLuint doubleBufferMode
;
203 GLboolean haveAccumBuffer
;
204 GLboolean haveDepthBuffer
;
205 GLboolean haveStencilBuffer
;
207 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
208 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
209 GLint rgbBits
; /* total bits for rgb */
210 GLint indexBits
; /* total bits for colorindex */
212 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
220 /* EXT_visual_rating / GLX 1.2 */
223 /* EXT_visual_info / GLX 1.2 */
224 GLint transparentPixel
;
225 /* colors are floats scaled to ints */
226 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
227 GLint transparentIndex
;
229 /* ARB_multisample / SGIS_multisample */
233 /* SGIX_pbuffer / GLX 1.3 */
234 GLint maxPbufferWidth
;
235 GLint maxPbufferHeight
;
236 GLint maxPbufferPixels
;
237 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
238 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
240 /* OML_swap_method */
243 /* EXT_texture_from_pixmap */
244 GLint bindToTextureRgb
;
245 GLint bindToTextureRgba
;
246 GLint bindToMipmapTexture
;
247 GLint bindToTextureTargets
;
250 /* EXT_framebuffer_sRGB */
256 * \name Bit flags used for updating material values.
259 #define MAT_ATTRIB_FRONT_AMBIENT 0
260 #define MAT_ATTRIB_BACK_AMBIENT 1
261 #define MAT_ATTRIB_FRONT_DIFFUSE 2
262 #define MAT_ATTRIB_BACK_DIFFUSE 3
263 #define MAT_ATTRIB_FRONT_SPECULAR 4
264 #define MAT_ATTRIB_BACK_SPECULAR 5
265 #define MAT_ATTRIB_FRONT_EMISSION 6
266 #define MAT_ATTRIB_BACK_EMISSION 7
267 #define MAT_ATTRIB_FRONT_SHININESS 8
268 #define MAT_ATTRIB_BACK_SHININESS 9
269 #define MAT_ATTRIB_FRONT_INDEXES 10
270 #define MAT_ATTRIB_BACK_INDEXES 11
271 #define MAT_ATTRIB_MAX 12
273 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
274 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
275 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
276 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
277 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
278 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
280 #define MAT_INDEX_AMBIENT 0
281 #define MAT_INDEX_DIFFUSE 1
282 #define MAT_INDEX_SPECULAR 2
284 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
285 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
286 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
287 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
288 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
289 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
290 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
291 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
292 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
293 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
294 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
295 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
298 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
299 MAT_BIT_FRONT_AMBIENT | \
300 MAT_BIT_FRONT_DIFFUSE | \
301 MAT_BIT_FRONT_SPECULAR | \
302 MAT_BIT_FRONT_SHININESS | \
303 MAT_BIT_FRONT_INDEXES)
305 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
306 MAT_BIT_BACK_AMBIENT | \
307 MAT_BIT_BACK_DIFFUSE | \
308 MAT_BIT_BACK_SPECULAR | \
309 MAT_BIT_BACK_SHININESS | \
310 MAT_BIT_BACK_INDEXES)
312 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
321 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
329 #define LIGHT_SPOT 0x1
330 #define LIGHT_LOCAL_VIEWER 0x2
331 #define LIGHT_POSITIONAL 0x4
332 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
337 * Light source state.
341 GLfloat Ambient
[4]; /**< ambient color */
342 GLfloat Diffuse
[4]; /**< diffuse color */
343 GLfloat Specular
[4]; /**< specular color */
344 GLfloat EyePosition
[4]; /**< position in eye coordinates */
345 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
346 GLfloat SpotExponent
;
347 GLfloat SpotCutoff
; /**< in degrees */
348 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
349 GLfloat ConstantAttenuation
;
350 GLfloat LinearAttenuation
;
351 GLfloat QuadraticAttenuation
;
352 GLboolean Enabled
; /**< On/off flag */
355 * \name Derived fields
358 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
360 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
361 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
362 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
363 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
364 GLfloat _VP_inf_spot_attenuation
;
366 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
367 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
368 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
378 GLfloat Ambient
[4]; /**< ambient color */
379 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
380 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
381 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
382 * or GL_SEPARATE_SPECULAR_COLOR */
387 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
389 struct gl_accum_attrib
391 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
396 * Used for storing clear color, texture border color, etc.
397 * The float values are typically unclamped.
408 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
410 struct gl_colorbuffer_attrib
412 GLuint ClearIndex
; /**< Index for glClear */
413 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
414 GLuint IndexMask
; /**< Color index write mask */
415 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
417 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
420 * \name alpha testing
423 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
424 GLenum AlphaFunc
; /**< Alpha test function */
425 GLfloat AlphaRefUnclamped
;
426 GLclampf AlphaRef
; /**< Alpha reference value */
433 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
435 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
436 * control, only on the fixed-pointness of the render target.
437 * The query does however depend on fragment color clamping.
439 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
440 GLfloat BlendColor
[4]; /**< Blending color */
444 GLenum SrcRGB
; /**< RGB blend source term */
445 GLenum DstRGB
; /**< RGB blend dest term */
446 GLenum SrcA
; /**< Alpha blend source term */
447 GLenum DstA
; /**< Alpha blend dest term */
448 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
449 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
451 * Set if any blend factor uses SRC1. Computed at the time blend factors
454 GLboolean _UsesDualSrc
;
455 } Blend
[MAX_DRAW_BUFFERS
];
456 /** Are the blend func terms currently different for each buffer/target? */
457 GLboolean _BlendFuncPerBuffer
;
458 /** Are the blend equations currently different for each buffer/target? */
459 GLboolean _BlendEquationPerBuffer
;
462 * Which advanced blending mode is in use (or BLEND_NONE).
464 * KHR_blend_equation_advanced only allows advanced blending with a single
465 * draw buffer, and NVX_blend_equation_advanced_multi_draw_buffer still
466 * requires all draw buffers to match, so we only need a single value.
468 enum gl_advanced_blend_mode _AdvancedBlendMode
;
470 /** Coherency requested via glEnable(GL_BLEND_ADVANCED_COHERENT_KHR)? */
478 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
479 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
480 GLenum LogicOp
; /**< Logic operator */
484 GLboolean DitherFlag
; /**< Dither enable flag */
486 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
487 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
488 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
490 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
495 * Current attribute group (GL_CURRENT_BIT).
497 struct gl_current_attrib
500 * \name Current vertex attributes (color, texcoords, etc).
501 * \note Values are valid only after FLUSH_VERTICES has been called.
502 * \note Index and Edgeflag current values are stored as floats in the
503 * SIX and SEVEN attribute slots.
504 * \note We need double storage for 64-bit vertex attributes
506 GLfloat Attrib
[VERT_ATTRIB_MAX
][4*2];
509 * \name Current raster position attributes (always up to date after a
512 GLfloat RasterPos
[4];
513 GLfloat RasterDistance
;
514 GLfloat RasterColor
[4];
515 GLfloat RasterSecondaryColor
[4];
516 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
517 GLboolean RasterPosValid
;
522 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
524 struct gl_depthbuffer_attrib
526 GLenum Func
; /**< Function for depth buffer compare */
527 GLclampd Clear
; /**< Value to clear depth buffer to */
528 GLboolean Test
; /**< Depth buffering enabled flag */
529 GLboolean Mask
; /**< Depth buffer writable? */
530 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
531 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
536 * Evaluator attribute group (GL_EVAL_BIT).
538 struct gl_eval_attrib
544 GLboolean Map1Color4
;
546 GLboolean Map1Normal
;
547 GLboolean Map1TextureCoord1
;
548 GLboolean Map1TextureCoord2
;
549 GLboolean Map1TextureCoord3
;
550 GLboolean Map1TextureCoord4
;
551 GLboolean Map1Vertex3
;
552 GLboolean Map1Vertex4
;
553 GLboolean Map2Color4
;
555 GLboolean Map2Normal
;
556 GLboolean Map2TextureCoord1
;
557 GLboolean Map2TextureCoord2
;
558 GLboolean Map2TextureCoord3
;
559 GLboolean Map2TextureCoord4
;
560 GLboolean Map2Vertex3
;
561 GLboolean Map2Vertex4
;
562 GLboolean AutoNormal
;
566 * \name Map Grid endpoints and divisions and calculated du values
570 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
571 GLint MapGrid2un
, MapGrid2vn
;
572 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
573 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
579 * Compressed fog mode.
591 * Fog attribute group (GL_FOG_BIT).
595 GLboolean Enabled
; /**< Fog enabled flag */
596 GLboolean ColorSumEnabled
;
597 uint8_t _PackedMode
; /**< Fog mode as 2 bits */
598 uint8_t _PackedEnabledMode
; /**< Masked CompressedMode */
599 GLfloat ColorUnclamped
[4]; /**< Fog color */
600 GLfloat Color
[4]; /**< Fog color */
601 GLfloat Density
; /**< Density >= 0.0 */
602 GLfloat Start
; /**< Start distance in eye coords */
603 GLfloat End
; /**< End distance in eye coords */
604 GLfloat Index
; /**< Fog index */
605 GLenum Mode
; /**< Fog mode */
606 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
607 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
608 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
613 * Hint attribute group (GL_HINT_BIT).
615 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
617 struct gl_hint_attrib
619 GLenum PerspectiveCorrection
;
622 GLenum PolygonSmooth
;
624 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
625 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
626 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
631 * Lighting attribute group (GL_LIGHT_BIT).
633 struct gl_light_attrib
635 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
636 struct gl_lightmodel Model
; /**< Lighting model */
639 * Front and back material values.
640 * Note: must call FLUSH_VERTICES() before using.
642 struct gl_material Material
;
644 GLboolean Enabled
; /**< Lighting enabled flag */
645 GLboolean ColorMaterialEnabled
;
647 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
648 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
649 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
650 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
651 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
654 GLboolean _ClampVertexColor
;
655 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
658 * Derived state for optimizations:
661 GLbitfield _EnabledLights
; /**< bitmask containing enabled lights */
663 GLboolean _NeedEyeCoords
;
664 GLboolean _NeedVertices
; /**< Use fast shader? */
666 GLfloat _BaseColor
[2][3];
672 * Line attribute group (GL_LINE_BIT).
674 struct gl_line_attrib
676 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
677 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
678 GLushort StipplePattern
; /**< Stipple pattern */
679 GLint StippleFactor
; /**< Stipple repeat factor */
680 GLfloat Width
; /**< Line width */
685 * Display list attribute group (GL_LIST_BIT).
687 struct gl_list_attrib
694 * Multisample attribute group (GL_MULTISAMPLE_BIT).
696 struct gl_multisample_attrib
699 GLboolean SampleAlphaToCoverage
;
700 GLboolean SampleAlphaToOne
;
701 GLboolean SampleCoverage
;
702 GLboolean SampleCoverageInvert
;
703 GLboolean SampleShading
;
705 /* ARB_texture_multisample / GL3.2 additions */
706 GLboolean SampleMask
;
708 GLfloat SampleCoverageValue
; /**< In range [0, 1] */
709 GLfloat MinSampleShadingValue
; /**< In range [0, 1] */
711 /** The GL spec defines this as an array but >32x MSAA is madness */
712 GLbitfield SampleMaskValue
;
717 * A pixelmap (see glPixelMap)
722 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
727 * Collection of all pixelmaps
731 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
732 struct gl_pixelmap GtoG
;
733 struct gl_pixelmap BtoB
;
734 struct gl_pixelmap AtoA
;
735 struct gl_pixelmap ItoR
;
736 struct gl_pixelmap ItoG
;
737 struct gl_pixelmap ItoB
;
738 struct gl_pixelmap ItoA
;
739 struct gl_pixelmap ItoI
;
740 struct gl_pixelmap StoS
;
745 * Pixel attribute group (GL_PIXEL_MODE_BIT).
747 struct gl_pixel_attrib
749 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
751 /*--- Begin Pixel Transfer State ---*/
752 /* Fields are in the order in which they're applied... */
754 /** Scale & Bias (index shift, offset) */
756 GLfloat RedBias
, RedScale
;
757 GLfloat GreenBias
, GreenScale
;
758 GLfloat BlueBias
, BlueScale
;
759 GLfloat AlphaBias
, AlphaScale
;
760 GLfloat DepthBias
, DepthScale
;
761 GLint IndexShift
, IndexOffset
;
765 /* Note: actual pixel maps are not part of this attrib group */
766 GLboolean MapColorFlag
;
767 GLboolean MapStencilFlag
;
769 /*--- End Pixel Transfer State ---*/
772 GLfloat ZoomX
, ZoomY
;
777 * Point attribute group (GL_POINT_BIT).
779 struct gl_point_attrib
781 GLfloat Size
; /**< User-specified point size */
782 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
783 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
784 GLfloat Threshold
; /**< GL_EXT_point_parameters */
785 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
786 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
787 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
788 GLbitfield CoordReplace
; /**< GL_ARB_point_sprite*/
789 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
790 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
795 * Polygon attribute group (GL_POLYGON_BIT).
797 struct gl_polygon_attrib
799 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
800 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
801 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
802 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
803 GLboolean CullFlag
; /**< Culling on/off flag */
804 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
805 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
806 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
807 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
808 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
809 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
810 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
811 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
812 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
817 * Scissor attributes (GL_SCISSOR_BIT).
819 struct gl_scissor_rect
821 GLint X
, Y
; /**< Lower left corner of box */
822 GLsizei Width
, Height
; /**< Size of box */
824 struct gl_scissor_attrib
826 GLbitfield EnableFlags
; /**< Scissor test enabled? */
827 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
828 GLint NumWindowRects
; /**< Count of enabled window rectangles */
829 GLenum WindowRectMode
; /**< Whether to include or exclude the rects */
830 struct gl_scissor_rect WindowRects
[MAX_WINDOW_RECTANGLES
];
835 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
837 * Three sets of stencil data are tracked so that OpenGL 2.0,
838 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
839 * simultaneously. In each of the stencil state arrays, element 0 corresponds
840 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
841 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
842 * GL_EXT_stencil_two_side GL_BACK state.
844 * The derived value \c _BackFace is either 1 or 2 depending on whether or
845 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
847 * The derived value \c _TestTwoSide is set when the front-face and back-face
848 * stencil state are different.
850 struct gl_stencil_attrib
852 GLboolean Enabled
; /**< Enabled flag */
853 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
854 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
855 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
856 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
857 GLboolean _TestTwoSide
;
858 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
859 GLenum Function
[3]; /**< Stencil function */
860 GLenum FailFunc
[3]; /**< Fail function */
861 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
862 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
863 GLint Ref
[3]; /**< Reference value */
864 GLuint ValueMask
[3]; /**< Value mask */
865 GLuint WriteMask
[3]; /**< Write mask */
866 GLuint Clear
; /**< Clear value */
871 * An index for each type of texture object. These correspond to the GL
872 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
873 * Note: the order is from highest priority to lowest priority.
877 TEXTURE_2D_MULTISAMPLE_INDEX
,
878 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
879 TEXTURE_CUBE_ARRAY_INDEX
,
880 TEXTURE_BUFFER_INDEX
,
881 TEXTURE_2D_ARRAY_INDEX
,
882 TEXTURE_1D_ARRAY_INDEX
,
883 TEXTURE_EXTERNAL_INDEX
,
894 * Bit flags for each type of texture object
897 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
898 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
899 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
900 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
901 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
902 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
903 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
904 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
905 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
906 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
907 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
908 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
913 * Texture image state. Drivers will typically create a subclass of this
914 * with extra fields for memory buffers, etc.
916 struct gl_texture_image
918 GLint InternalFormat
; /**< Internal format as given by the user */
919 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
920 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
921 * GL_INTENSITY, GL_DEPTH_COMPONENT or
922 * GL_DEPTH_STENCIL_EXT only. Used for
923 * choosing TexEnv arithmetic.
925 mesa_format TexFormat
; /**< The actual texture memory format */
927 GLuint Border
; /**< 0 or 1 */
928 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
929 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
930 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
931 GLuint Width2
; /**< = Width - 2*Border */
932 GLuint Height2
; /**< = Height - 2*Border */
933 GLuint Depth2
; /**< = Depth - 2*Border */
934 GLuint WidthLog2
; /**< = log2(Width2) */
935 GLuint HeightLog2
; /**< = log2(Height2) */
936 GLuint DepthLog2
; /**< = log2(Depth2) */
937 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
938 levels, computed from the dimensions */
940 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
941 GLuint Level
; /**< Which mipmap level am I? */
942 /** Cube map face: index into gl_texture_object::Image[] array */
945 /** GL_ARB_texture_multisample */
946 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
947 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
952 * Indexes for cube map faces.
967 * Sampler object state. These objects are new with GL_ARB_sampler_objects
968 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
970 struct gl_sampler_object
975 GLchar
*Label
; /**< GL_KHR_debug */
977 GLenum WrapS
; /**< S-axis texture image wrap mode */
978 GLenum WrapT
; /**< T-axis texture image wrap mode */
979 GLenum WrapR
; /**< R-axis texture image wrap mode */
980 GLenum MinFilter
; /**< minification filter */
981 GLenum MagFilter
; /**< magnification filter */
982 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
983 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
984 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
985 GLfloat LodBias
; /**< OpenGL 1.4 */
986 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
987 GLenum CompareMode
; /**< GL_ARB_shadow */
988 GLenum CompareFunc
; /**< GL_ARB_shadow */
989 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
990 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
995 * Texture object state. Contains the array of mipmap images, border color,
996 * wrap modes, filter modes, and shadow/texcompare state.
998 struct gl_texture_object
1000 mtx_t Mutex
; /**< for thread safety */
1001 GLint RefCount
; /**< reference count */
1002 GLuint Name
; /**< the user-visible texture object ID */
1003 GLchar
*Label
; /**< GL_KHR_debug */
1004 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1005 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
1006 Only valid when Target is valid. */
1008 struct gl_sampler_object Sampler
;
1010 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1011 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
1013 GLfloat Priority
; /**< in [0,1] */
1014 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1015 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1016 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1017 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1018 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1019 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1020 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1021 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1022 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1023 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1024 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1025 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1026 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1027 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1029 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1030 GLboolean _IsFloat
; /**< GL_OES_float_texture */
1031 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
1033 GLuint MinLevel
; /**< GL_ARB_texture_view */
1034 GLuint MinLayer
; /**< GL_ARB_texture_view */
1035 GLuint NumLevels
; /**< GL_ARB_texture_view */
1036 GLuint NumLayers
; /**< GL_ARB_texture_view */
1038 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1039 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1041 /** GL_ARB_texture_buffer_object */
1042 struct gl_buffer_object
*BufferObject
;
1043 GLenum BufferObjectFormat
;
1044 /** Equivalent Mesa format for BufferObjectFormat. */
1045 mesa_format _BufferObjectFormat
;
1046 /** GL_ARB_texture_buffer_range */
1047 GLintptr BufferOffset
;
1048 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1050 /** GL_OES_EGL_image_external */
1051 GLint RequiredTextureImageUnits
;
1053 /** GL_ARB_shader_image_load_store */
1054 GLenum ImageFormatCompatibilityType
;
1058 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1059 #define MAX_COMBINER_TERMS 4
1063 * Texture combine environment state.
1065 struct gl_tex_env_combine_state
1067 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1068 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1069 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1070 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1071 GLenum SourceA
[MAX_COMBINER_TERMS
];
1072 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1073 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1074 GLenum OperandA
[MAX_COMBINER_TERMS
];
1075 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1076 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1077 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1078 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1082 /** Compressed TexEnv effective Combine mode */
1083 enum gl_tex_env_mode
1085 TEXENV_MODE_REPLACE
, /* r = a0 */
1086 TEXENV_MODE_MODULATE
, /* r = a0 * a1 */
1087 TEXENV_MODE_ADD
, /* r = a0 + a1 */
1088 TEXENV_MODE_ADD_SIGNED
, /* r = a0 + a1 - 0.5 */
1089 TEXENV_MODE_INTERPOLATE
, /* r = a0 * a2 + a1 * (1 - a2) */
1090 TEXENV_MODE_SUBTRACT
, /* r = a0 - a1 */
1091 TEXENV_MODE_DOT3_RGB
, /* r = a0 . a1 */
1092 TEXENV_MODE_DOT3_RGB_EXT
, /* r = a0 . a1 */
1093 TEXENV_MODE_DOT3_RGBA
, /* r = a0 . a1 */
1094 TEXENV_MODE_DOT3_RGBA_EXT
, /* r = a0 . a1 */
1095 TEXENV_MODE_MODULATE_ADD_ATI
, /* r = a0 * a2 + a1 */
1096 TEXENV_MODE_MODULATE_SIGNED_ADD_ATI
, /* r = a0 * a2 + a1 - 0.5 */
1097 TEXENV_MODE_MODULATE_SUBTRACT_ATI
, /* r = a0 * a2 - a1 */
1098 TEXENV_MODE_ADD_PRODUCTS_NV
, /* r = a0 * a1 + a2 * a3 */
1099 TEXENV_MODE_ADD_PRODUCTS_SIGNED_NV
, /* r = a0 * a1 + a2 * a3 - 0.5 */
1103 /** Compressed TexEnv Combine source */
1104 enum gl_tex_env_source
1106 TEXENV_SRC_TEXTURE0
,
1107 TEXENV_SRC_TEXTURE1
,
1108 TEXENV_SRC_TEXTURE2
,
1109 TEXENV_SRC_TEXTURE3
,
1110 TEXENV_SRC_TEXTURE4
,
1111 TEXENV_SRC_TEXTURE5
,
1112 TEXENV_SRC_TEXTURE6
,
1113 TEXENV_SRC_TEXTURE7
,
1115 TEXENV_SRC_PREVIOUS
,
1116 TEXENV_SRC_PRIMARY_COLOR
,
1117 TEXENV_SRC_CONSTANT
,
1123 /** Compressed TexEnv Combine operand */
1124 enum gl_tex_env_operand
1127 TEXENV_OPR_ONE_MINUS_COLOR
,
1129 TEXENV_OPR_ONE_MINUS_ALPHA
,
1133 /** Compressed TexEnv Combine argument */
1134 struct gl_tex_env_argument
1137 __extension__
uint8_t Source
:4; /**< TEXENV_SRC_x */
1138 __extension__
uint8_t Operand
:2; /**< TEXENV_OPR_x */
1140 uint8_t Source
; /**< SRC_x */
1141 uint8_t Operand
; /**< OPR_x */
1147 * Compressed TexEnv Combine state.
1149 struct gl_tex_env_combine_packed
1151 uint32_t ModeRGB
:4; /**< Effective mode for RGB as 4 bits */
1152 uint32_t ModeA
:4; /**< Effective mode for RGB as 4 bits */
1153 uint32_t ScaleShiftRGB
:2; /**< 0, 1 or 2 */
1154 uint32_t ScaleShiftA
:2; /**< 0, 1 or 2 */
1155 uint32_t NumArgsRGB
:3; /**< Number of inputs used for the RGB combiner */
1156 uint32_t NumArgsA
:3; /**< Number of inputs used for the A combiner */
1157 /** Source arguments in a packed manner */
1158 struct gl_tex_env_argument ArgsRGB
[MAX_COMBINER_TERMS
];
1159 struct gl_tex_env_argument ArgsA
[MAX_COMBINER_TERMS
];
1164 * TexGenEnabled flags.
1171 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1176 * Bit flag versions of the corresponding GL_ constants.
1179 #define TEXGEN_SPHERE_MAP 0x1
1180 #define TEXGEN_OBJ_LINEAR 0x2
1181 #define TEXGEN_EYE_LINEAR 0x4
1182 #define TEXGEN_REFLECTION_MAP_NV 0x8
1183 #define TEXGEN_NORMAL_MAP_NV 0x10
1185 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1186 TEXGEN_REFLECTION_MAP_NV | \
1187 TEXGEN_NORMAL_MAP_NV)
1188 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1189 TEXGEN_REFLECTION_MAP_NV | \
1190 TEXGEN_NORMAL_MAP_NV | \
1196 /** Tex-gen enabled for texture unit? */
1197 #define ENABLE_TEXGEN(unit) (1 << (unit))
1199 /** Non-identity texture matrix for texture unit? */
1200 #define ENABLE_TEXMAT(unit) (1 << (unit))
1204 * Texture coord generation state.
1208 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1209 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1210 GLfloat ObjectPlane
[4];
1211 GLfloat EyePlane
[4];
1216 * Texture unit state. Contains enable flags, texture environment/function/
1217 * combiners, texgen state, and pointers to current texture objects.
1219 struct gl_texture_unit
1221 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1223 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1224 GLclampf EnvColor
[4];
1225 GLfloat EnvColorUnclamped
[4];
1227 struct gl_texgen GenS
;
1228 struct gl_texgen GenT
;
1229 struct gl_texgen GenR
;
1230 struct gl_texgen GenQ
;
1231 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1232 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1234 GLfloat LodBias
; /**< for biasing mipmap levels */
1236 /** Texture targets that have a non-default texture bound */
1237 GLbitfield _BoundTextures
;
1239 /** Current sampler object (GL_ARB_sampler_objects) */
1240 struct gl_sampler_object
*Sampler
;
1243 * \name GL_EXT_texture_env_combine
1245 struct gl_tex_env_combine_state Combine
;
1248 * Derived state based on \c EnvMode and the \c BaseFormat of the
1249 * currently enabled texture.
1251 struct gl_tex_env_combine_state _EnvMode
;
1254 * Currently enabled combiner state. This will point to either
1255 * \c Combine or \c _EnvMode.
1257 struct gl_tex_env_combine_state
*_CurrentCombine
;
1259 /** Current texture object pointers */
1260 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1262 /** Points to highest priority, complete and enabled texture object */
1263 struct gl_texture_object
*_Current
;
1265 /** Current compressed TexEnv & Combine state */
1266 struct gl_tex_env_combine_packed _CurrentCombinePacked
;
1271 * Texture attribute group (GL_TEXTURE_BIT).
1273 struct gl_texture_attrib
1275 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1277 /** GL_ARB_seamless_cubemap */
1278 GLboolean CubeMapSeamless
;
1280 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1282 /** GL_ARB_texture_buffer_object */
1283 struct gl_buffer_object
*BufferObject
;
1285 /** Texture coord units/sets used for fragment texturing */
1286 GLbitfield _EnabledCoordUnits
;
1288 /** Texture coord units that have texgen enabled */
1289 GLbitfield _TexGenEnabled
;
1291 /** Texture coord units that have non-identity matrices */
1292 GLbitfield _TexMatEnabled
;
1294 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1295 GLbitfield _GenFlags
;
1297 /** Largest index of a texture unit with _Current != NULL. */
1298 GLint _MaxEnabledTexImageUnit
;
1300 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1301 GLint NumCurrentTexUsed
;
1303 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1308 * Data structure representing a single clip plane (e.g. one of the elements
1309 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1311 typedef GLfloat gl_clip_plane
[4];
1315 * Transformation attribute group (GL_TRANSFORM_BIT).
1317 struct gl_transform_attrib
1319 GLenum MatrixMode
; /**< Matrix mode */
1320 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1321 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1322 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1323 GLboolean Normalize
; /**< Normalize all normals? */
1324 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1325 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1326 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1327 /** GL_ARB_clip_control */
1328 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1329 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1334 * Viewport attribute group (GL_VIEWPORT_BIT).
1336 struct gl_viewport_attrib
1338 GLfloat X
, Y
; /**< position */
1339 GLfloat Width
, Height
; /**< size */
1340 GLdouble Near
, Far
; /**< Depth buffer range */
1349 } gl_map_buffer_index
;
1353 * Fields describing a mapped buffer range.
1355 struct gl_buffer_mapping
{
1356 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1357 GLvoid
*Pointer
; /**< User-space address of mapping */
1358 GLintptr Offset
; /**< Mapped offset */
1359 GLsizeiptr Length
; /**< Mapped length */
1364 * Usages we've seen for a buffer object.
1367 USAGE_UNIFORM_BUFFER
= 0x1,
1368 USAGE_TEXTURE_BUFFER
= 0x2,
1369 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1370 USAGE_SHADER_STORAGE_BUFFER
= 0x8,
1371 USAGE_TRANSFORM_FEEDBACK_BUFFER
= 0x10,
1372 USAGE_PIXEL_PACK_BUFFER
= 0x20,
1373 USAGE_DISABLE_MINMAX_CACHE
= 0x40,
1378 * GL_ARB_vertex/pixel_buffer_object buffer object
1380 struct gl_buffer_object
1385 GLchar
*Label
; /**< GL_KHR_debug */
1386 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1387 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1388 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1389 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1390 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1391 GLboolean Written
; /**< Ever written to? (for debugging) */
1392 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1393 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1394 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1396 /** Counters used for buffer usage warnings */
1397 GLuint NumSubDataCalls
;
1398 GLuint NumMapBufferWriteCalls
;
1400 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1402 /** Memoization of min/max index computations for static index buffers */
1403 struct hash_table
*MinMaxCache
;
1404 unsigned MinMaxCacheHitIndices
;
1405 unsigned MinMaxCacheMissIndices
;
1406 bool MinMaxCacheDirty
;
1411 * Client pixel packing/unpacking attributes
1413 struct gl_pixelstore_attrib
1421 GLboolean SwapBytes
;
1423 GLboolean Invert
; /**< GL_MESA_pack_invert */
1424 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1425 GLint CompressedBlockHeight
;
1426 GLint CompressedBlockDepth
;
1427 GLint CompressedBlockSize
;
1428 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1433 * Vertex array information which is derived from gl_array_attributes
1434 * and gl_vertex_buffer_binding information. Used by the VBO module and
1437 struct gl_vertex_array
1439 GLint Size
; /**< components per element (1,2,3,4) */
1440 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1441 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1442 GLsizei StrideB
; /**< actual stride in bytes */
1443 GLuint _ElementSize
; /**< size of each element in bytes */
1444 const GLubyte
*Ptr
; /**< Points to array data */
1445 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1446 GLboolean Integer
; /**< Integer-valued? */
1447 GLboolean Doubles
; /**< double precision values are not converted to floats */
1448 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1450 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1455 * Attributes to describe a vertex array.
1457 * Contains the size, type, format and normalization flag,
1458 * along with the index of a vertex buffer binding point.
1460 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1461 * and is only present for backwards compatibility reasons.
1462 * Rendering always uses VERTEX_BINDING_STRIDE.
1463 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1464 * and VERTEX_BINDING_STRIDE to the same value, while
1465 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1467 struct gl_array_attributes
1469 GLint Size
; /**< Components per element (1,2,3,4) */
1470 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1471 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1472 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1473 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1474 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1475 GLboolean Enabled
; /**< Whether the array is enabled */
1476 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1477 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1478 GLboolean Doubles
; /**< double precision values are not converted to floats */
1479 GLuint _ElementSize
; /**< Size of each element in bytes */
1480 GLuint BufferBindingIndex
; /**< Vertex buffer binding */
1485 * This describes the buffer object used for a vertex array (or
1486 * multiple vertex arrays). If BufferObj points to the default/null
1487 * buffer object, then the vertex array lives in user memory and not a VBO.
1489 struct gl_vertex_buffer_binding
1491 GLintptr Offset
; /**< User-specified offset */
1492 GLsizei Stride
; /**< User-specified stride */
1493 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1494 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1495 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1500 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+ /
1501 * the GL_ARB_vertex_array_object extension.
1503 struct gl_vertex_array_object
1505 /** Name of the VAO as received from glGenVertexArray. */
1510 GLchar
*Label
; /**< GL_KHR_debug */
1513 * Has this array object been bound?
1515 GLboolean EverBound
;
1518 * Derived vertex attribute arrays
1520 * This is a legacy data structure created from gl_vertex_attrib_array and
1521 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1523 struct gl_vertex_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1525 /** Vertex attribute arrays */
1526 struct gl_array_attributes VertexAttrib
[VERT_ATTRIB_MAX
];
1528 /** Vertex buffer bindings */
1529 struct gl_vertex_buffer_binding BufferBinding
[VERT_ATTRIB_MAX
];
1531 /** Mask indicating which vertex arrays have vertex buffer associated. */
1532 GLbitfield64 VertexAttribBufferMask
;
1534 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1535 GLbitfield64 _Enabled
;
1537 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1538 GLbitfield64 NewArrays
;
1540 /** The index buffer (also known as the element array buffer in OpenGL). */
1541 struct gl_buffer_object
*IndexBufferObj
;
1545 /** Used to signal when transitioning from one kind of drawing method
1549 DRAW_NONE
, /**< Initial value only */
1556 * Enum for the OpenGL APIs we know about and may support.
1558 * NOTE: This must match the api_enum table in
1559 * src/mesa/main/get_hash_generator.py
1563 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1567 API_OPENGL_LAST
= API_OPENGL_CORE
1571 * Vertex array state
1573 struct gl_array_attrib
1575 /** Currently bound array object. */
1576 struct gl_vertex_array_object
*VAO
;
1578 /** The default vertex array object */
1579 struct gl_vertex_array_object
*DefaultVAO
;
1581 /** The last VAO accessed by a DSA function */
1582 struct gl_vertex_array_object
*LastLookedUpVAO
;
1584 /** Array objects (GL_ARB_vertex_array_object) */
1585 struct _mesa_HashTable
*Objects
;
1587 GLint ActiveTexture
; /**< Client Active Texture */
1588 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1589 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1592 * \name Primitive restart controls
1594 * Primitive restart is enabled if either \c PrimitiveRestart or
1595 * \c PrimitiveRestartFixedIndex is set.
1598 GLboolean PrimitiveRestart
;
1599 GLboolean PrimitiveRestartFixedIndex
;
1600 GLboolean _PrimitiveRestart
;
1601 GLuint RestartIndex
;
1604 /** One of the DRAW_xxx flags, not consumed by drivers */
1605 gl_draw_method DrawMethod
;
1607 /* GL_ARB_vertex_buffer_object */
1608 struct gl_buffer_object
*ArrayBufferObj
;
1611 * Vertex arrays as consumed by a driver.
1612 * The array pointer is set up only by the VBO module.
1614 const struct gl_vertex_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1616 /** Legal array datatypes and the API for which they have been computed */
1617 GLbitfield LegalTypesMask
;
1618 gl_api LegalTypesMaskAPI
;
1623 * Feedback buffer state
1628 GLbitfield _Mask
; /**< FB_* bits */
1636 * Selection buffer state
1640 GLuint
*Buffer
; /**< selection buffer */
1641 GLuint BufferSize
; /**< size of the selection buffer */
1642 GLuint BufferCount
; /**< number of values in the selection buffer */
1643 GLuint Hits
; /**< number of records in the selection buffer */
1644 GLuint NameStackDepth
; /**< name stack depth */
1645 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1646 GLboolean HitFlag
; /**< hit flag */
1647 GLfloat HitMinZ
; /**< minimum hit depth */
1648 GLfloat HitMaxZ
; /**< maximum hit depth */
1653 * 1-D Evaluator control points
1657 GLuint Order
; /**< Number of control points */
1658 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1659 GLfloat
*Points
; /**< Points to contiguous control points */
1664 * 2-D Evaluator control points
1668 GLuint Uorder
; /**< Number of control points in U dimension */
1669 GLuint Vorder
; /**< Number of control points in V dimension */
1672 GLfloat
*Points
; /**< Points to contiguous control points */
1677 * All evaluator control point state
1679 struct gl_evaluators
1685 struct gl_1d_map Map1Vertex3
;
1686 struct gl_1d_map Map1Vertex4
;
1687 struct gl_1d_map Map1Index
;
1688 struct gl_1d_map Map1Color4
;
1689 struct gl_1d_map Map1Normal
;
1690 struct gl_1d_map Map1Texture1
;
1691 struct gl_1d_map Map1Texture2
;
1692 struct gl_1d_map Map1Texture3
;
1693 struct gl_1d_map Map1Texture4
;
1700 struct gl_2d_map Map2Vertex3
;
1701 struct gl_2d_map Map2Vertex4
;
1702 struct gl_2d_map Map2Index
;
1703 struct gl_2d_map Map2Color4
;
1704 struct gl_2d_map Map2Normal
;
1705 struct gl_2d_map Map2Texture1
;
1706 struct gl_2d_map Map2Texture2
;
1707 struct gl_2d_map Map2Texture3
;
1708 struct gl_2d_map Map2Texture4
;
1713 struct gl_transform_feedback_varying_info
1724 * Per-output info vertex shaders for transform feedback.
1726 struct gl_transform_feedback_output
1728 uint32_t OutputRegister
;
1729 uint32_t OutputBuffer
;
1730 uint32_t NumComponents
;
1733 /** offset (in DWORDs) of this output within the interleaved structure */
1737 * Offset into the output register of the data to output. For example,
1738 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1739 * offset is in the y and z components of the output register.
1741 uint32_t ComponentOffset
;
1745 struct gl_transform_feedback_buffer
1749 uint32_t NumVaryings
;
1752 * Total number of components stored in each buffer. This may be used by
1753 * hardware back-ends to determine the correct stride when interleaving
1754 * multiple transform feedback outputs in the same buffer.
1759 * Which transform feedback stream this buffer binding is associated with.
1765 /** Post-link transform feedback info. */
1766 struct gl_transform_feedback_info
1768 unsigned NumOutputs
;
1770 /* Bitmask of active buffer indices. */
1771 unsigned ActiveBuffers
;
1773 struct gl_transform_feedback_output
*Outputs
;
1775 /** Transform feedback varyings used for the linking of this shader program.
1777 * Use for glGetTransformFeedbackVarying().
1779 struct gl_transform_feedback_varying_info
*Varyings
;
1782 struct gl_transform_feedback_buffer Buffers
[MAX_FEEDBACK_BUFFERS
];
1787 * Transform feedback object state
1789 struct gl_transform_feedback_object
1791 GLuint Name
; /**< AKA the object ID */
1793 GLchar
*Label
; /**< GL_KHR_debug */
1794 GLboolean Active
; /**< Is transform feedback enabled? */
1795 GLboolean Paused
; /**< Is transform feedback paused? */
1796 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1798 GLboolean EverBound
; /**< Has this object been bound? */
1801 * GLES: if Active is true, remaining number of primitives which can be
1802 * rendered without overflow. This is necessary to track because GLES
1803 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1804 * glDrawArraysInstanced would overflow transform feedback buffers.
1805 * Undefined if Active is false.
1807 * Not tracked for desktop GL since it's unnecessary.
1809 unsigned GlesRemainingPrims
;
1812 * The program active when BeginTransformFeedback() was called.
1813 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1814 * where stage is the pipeline stage that is the source of data for
1815 * transform feedback.
1817 struct gl_program
*program
;
1819 /** The feedback buffers */
1820 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1821 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1823 /** Start of feedback data in dest buffer */
1824 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1827 * Max data to put into dest buffer (in bytes). Computed based on
1828 * RequestedSize and the actual size of the buffer.
1830 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1833 * Size that was specified when the buffer was bound. If the buffer was
1834 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1837 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1842 * Context state for transform feedback.
1844 struct gl_transform_feedback_state
1846 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1848 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1849 struct gl_buffer_object
*CurrentBuffer
;
1851 /** The table of all transform feedback objects */
1852 struct _mesa_HashTable
*Objects
;
1854 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1855 struct gl_transform_feedback_object
*CurrentObject
;
1857 /** The default xform-fb object (Name==0) */
1858 struct gl_transform_feedback_object
*DefaultObject
;
1863 * A "performance monitor" as described in AMD_performance_monitor.
1865 struct gl_perf_monitor_object
1869 /** True if the monitor is currently active (Begin called but not End). */
1873 * True if the monitor has ended.
1875 * This is distinct from !Active because it may never have began.
1880 * A list of groups with currently active counters.
1882 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1884 unsigned *ActiveGroups
;
1887 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1889 * Checking whether counter 'c' in group 'g' is active can be done via:
1891 * BITSET_TEST(ActiveCounters[g], c)
1893 GLuint
**ActiveCounters
;
1897 union gl_perf_monitor_counter_value
1905 struct gl_perf_monitor_counter
1907 /** Human readable name for the counter. */
1911 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1912 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1916 /** Minimum counter value. */
1917 union gl_perf_monitor_counter_value Minimum
;
1919 /** Maximum counter value. */
1920 union gl_perf_monitor_counter_value Maximum
;
1924 struct gl_perf_monitor_group
1926 /** Human readable name for the group. */
1930 * Maximum number of counters in this group which can be active at the
1933 GLuint MaxActiveCounters
;
1935 /** Array of counters within this group. */
1936 const struct gl_perf_monitor_counter
*Counters
;
1942 * A query object instance as described in INTEL_performance_query.
1944 * NB: We want to keep this and the corresponding backend structure
1945 * relatively lean considering that applications may expect to
1946 * allocate enough objects to be able to query around all draw calls
1949 struct gl_perf_query_object
1951 GLuint Id
; /**< hash table ID/name */
1952 unsigned Used
:1; /**< has been used for 1 or more queries */
1953 unsigned Active
:1; /**< inside Begin/EndPerfQuery */
1954 unsigned Ready
:1; /**< result is ready? */
1959 * Context state for AMD_performance_monitor.
1961 struct gl_perf_monitor_state
1963 /** Array of performance monitor groups (indexed by group ID) */
1964 const struct gl_perf_monitor_group
*Groups
;
1967 /** The table of all performance monitors. */
1968 struct _mesa_HashTable
*Monitors
;
1973 * Context state for INTEL_performance_query.
1975 struct gl_perf_query_state
1977 struct _mesa_HashTable
*Objects
; /**< The table of all performance query objects */
1982 * Names of the various vertex/fragment program register files, etc.
1984 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1985 * All values should fit in a 4-bit field.
1987 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1988 * considered to be "uniform" variables since they can only be set outside
1989 * glBegin/End. They're also all stored in the same Parameters array.
1993 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1994 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1995 PROGRAM_INPUT
, /**< machine->Inputs[] */
1996 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1997 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1998 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1999 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
2000 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
2001 PROGRAM_ADDRESS
, /**< machine->AddressReg */
2002 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
2003 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
2004 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
2005 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
2006 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
2007 PROGRAM_MEMORY
, /**< for shared, global and local memory */
2008 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
2014 * Base class for any kind of program object
2018 /** FIXME: This must be first until we split shader_info from nir_shader */
2019 struct shader_info info
;
2023 GLubyte
*String
; /**< Null-terminated program text */
2025 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2026 GLenum Format
; /**< String encoding format */
2028 GLboolean _Used
; /**< Ever used for drawing? Used for debugging */
2030 struct nir_shader
*nir
;
2032 bool is_arb_asm
; /** Is this an ARB assembly-style program */
2034 /** Is this program written to on disk shader cache */
2035 bool program_written_to_cache
;
2037 GLbitfield64 SecondaryOutputsWritten
; /**< Subset of OutputsWritten outputs written with non-zero index. */
2038 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
2039 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
2040 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
2041 GLbitfield ExternalSamplersUsed
; /**< Texture units used for samplerExternalOES */
2043 /* Fragement shader only fields */
2044 GLboolean OriginUpperLeft
;
2045 GLboolean PixelCenterInteger
;
2047 /** Named parameters, constants, etc. from program text */
2048 struct gl_program_parameter_list
*Parameters
;
2050 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2051 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2053 /* FIXME: We should be able to make this struct a union. However some
2054 * drivers (i915/fragment_programs, swrast/prog_execute) mix the use of
2055 * these fields, we should fix this.
2058 /** Fields used by GLSL programs */
2060 /** Data shared by gl_program and gl_shader_program */
2061 struct gl_shader_program_data
*data
;
2063 struct gl_active_atomic_buffer
**AtomicBuffers
;
2065 /** Post-link transform feedback info. */
2066 struct gl_transform_feedback_info
*LinkedTransformFeedback
;
2069 * Number of types for subroutine uniforms.
2071 GLuint NumSubroutineUniformTypes
;
2074 * Subroutine uniform remap table
2075 * based on the program level uniform remap table.
2077 GLuint NumSubroutineUniforms
; /* non-sparse total */
2078 GLuint NumSubroutineUniformRemapTable
;
2079 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
2082 * Num of subroutine functions for this stage and storage for them.
2084 GLuint NumSubroutineFunctions
;
2085 GLuint MaxSubroutineFunctionIndex
;
2086 struct gl_subroutine_function
*SubroutineFunctions
;
2089 * Map from image uniform index to image unit (set by glUniform1i())
2091 * An image uniform index is associated with each image uniform by
2092 * the linker. The image index associated with each uniform is
2093 * stored in the \c gl_uniform_storage::image field.
2095 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2098 * Access qualifier specified in the shader for each image uniform
2099 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2102 * It may be different, though only more strict than the value of
2103 * \c gl_image_unit::Access for the corresponding image unit.
2105 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2107 struct gl_uniform_block
**UniformBlocks
;
2108 struct gl_uniform_block
**ShaderStorageBlocks
;
2110 /** Which texture target is being sampled
2111 * (TEXTURE_1D/2D/3D/etc_INDEX)
2113 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2118 * A bitmask of gl_advanced_blend_mode values
2120 GLbitfield BlendSupport
;
2125 /** ARB assembly-style program fields */
2127 struct prog_instruction
*Instructions
;
2130 * Local parameters used by the program.
2132 * It's dynamically allocated because it is rarely used (just
2133 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries
2134 * once it's allocated.
2136 GLfloat (*LocalParams
)[4];
2138 /** Bitmask of which register files are read/written with indirect
2139 * addressing. Mask of (1 << PROGRAM_x) bits.
2141 GLbitfield IndirectRegisterFiles
;
2143 /** Logical counts */
2145 GLuint NumInstructions
;
2146 GLuint NumTemporaries
;
2147 GLuint NumParameters
;
2148 GLuint NumAttributes
;
2149 GLuint NumAddressRegs
;
2150 GLuint NumAluInstructions
;
2151 GLuint NumTexInstructions
;
2152 GLuint NumTexIndirections
;
2154 /** Native, actual h/w counts */
2156 GLuint NumNativeInstructions
;
2157 GLuint NumNativeTemporaries
;
2158 GLuint NumNativeParameters
;
2159 GLuint NumNativeAttributes
;
2160 GLuint NumNativeAddressRegs
;
2161 GLuint NumNativeAluInstructions
;
2162 GLuint NumNativeTexInstructions
;
2163 GLuint NumNativeTexIndirections
;
2166 /** Used by ARB assembly-style programs. Can only be true for vertex
2169 GLboolean IsPositionInvariant
;
2176 * State common to vertex and fragment programs.
2178 struct gl_program_state
2180 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2181 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2186 * Context state for vertex programs.
2188 struct gl_vertex_program_state
2190 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2191 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2192 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2193 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2194 /** Computed two sided lighting for fixed function/programs. */
2195 GLboolean _TwoSideEnabled
;
2196 struct gl_program
*Current
; /**< User-bound vertex program */
2198 /** Currently enabled and valid vertex program (including internal
2199 * programs, user-defined vertex programs and GLSL vertex shaders).
2200 * This is the program we must use when rendering.
2202 struct gl_program
*_Current
;
2204 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2206 /** Should fixed-function T&L be implemented with a vertex prog? */
2207 GLboolean _MaintainTnlProgram
;
2209 /** Program to emulate fixed-function T&L (see above) */
2210 struct gl_program
*_TnlProgram
;
2212 /** Cache of fixed-function programs */
2213 struct gl_program_cache
*Cache
;
2215 GLboolean _Overriden
;
2219 * Context state for tessellation control programs.
2221 struct gl_tess_ctrl_program_state
2223 /** Currently bound and valid shader. */
2224 struct gl_program
*_Current
;
2226 GLint patch_vertices
;
2227 GLfloat patch_default_outer_level
[4];
2228 GLfloat patch_default_inner_level
[2];
2232 * Context state for tessellation evaluation programs.
2234 struct gl_tess_eval_program_state
2236 /** Currently bound and valid shader. */
2237 struct gl_program
*_Current
;
2241 * Context state for geometry programs.
2243 struct gl_geometry_program_state
2245 /** Currently enabled and valid program (including internal programs
2246 * and compiled shader programs).
2248 struct gl_program
*_Current
;
2252 * Context state for fragment programs.
2254 struct gl_fragment_program_state
2256 GLboolean Enabled
; /**< User-set fragment program enable flag */
2257 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2258 struct gl_program
*Current
; /**< User-bound fragment program */
2260 /** Currently enabled and valid fragment program (including internal
2261 * programs, user-defined fragment programs and GLSL fragment shaders).
2262 * This is the program we must use when rendering.
2264 struct gl_program
*_Current
;
2266 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2268 /** Should fixed-function texturing be implemented with a fragment prog? */
2269 GLboolean _MaintainTexEnvProgram
;
2271 /** Program to emulate fixed-function texture env/combine (see above) */
2272 struct gl_program
*_TexEnvProgram
;
2274 /** Cache of fixed-function programs */
2275 struct gl_program_cache
*Cache
;
2280 * Context state for compute programs.
2282 struct gl_compute_program_state
2284 /** Currently enabled and valid program (including internal programs
2285 * and compiled shader programs).
2287 struct gl_program
*_Current
;
2292 * ATI_fragment_shader runtime state
2295 struct atifs_instruction
;
2296 struct atifs_setupinst
;
2299 * ATI fragment shader
2301 struct ati_fragment_shader
2305 struct atifs_instruction
*Instructions
[2];
2306 struct atifs_setupinst
*SetupInst
[2];
2307 GLfloat Constants
[8][4];
2308 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2309 GLubyte numArithInstr
[2];
2310 GLubyte regsAssigned
[2];
2311 GLubyte NumPasses
; /**< 1 or 2 */
2313 GLubyte last_optype
;
2314 GLboolean interpinp1
;
2317 struct gl_program
*Program
;
2321 * Context state for GL_ATI_fragment_shader
2323 struct gl_ati_fragment_shader_state
2326 GLboolean _Enabled
; /**< enabled and valid shader? */
2327 GLboolean Compiling
;
2328 GLfloat GlobalConstants
[8][4];
2329 struct ati_fragment_shader
*Current
;
2333 * Shader subroutine function definition
2335 struct gl_subroutine_function
2339 int num_compat_types
;
2340 const struct glsl_type
**types
;
2344 * Shader information needed by both gl_shader and gl_linked shader.
2346 struct gl_shader_info
2349 * Tessellation Control shader state from layout qualifiers.
2353 * 0 - vertices not declared in shader, or
2354 * 1 .. GL_MAX_PATCH_VERTICES
2360 * Tessellation Evaluation shader state from layout qualifiers.
2364 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2367 GLenum PrimitiveMode
;
2369 enum gl_tess_spacing Spacing
;
2372 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2376 * 1, 0, or -1 if it's not set in this shader.
2382 * Geometry shader state from GLSL 1.50 layout qualifiers.
2387 * 0 - Invocations count not declared in shader, or
2388 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2392 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2393 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2398 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2399 * it's not set in this shader.
2405 * Compute shader state from ARB_compute_shader and
2406 * ARB_compute_variable_group_size layout qualifiers.
2410 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2411 * it's not set in this shader.
2413 unsigned LocalSize
[3];
2416 * Whether a variable work group size has been specified as defined by
2417 * ARB_compute_variable_group_size.
2419 bool LocalSizeVariable
;
2424 * A linked GLSL shader object.
2426 struct gl_linked_shader
2428 gl_shader_stage Stage
;
2431 unsigned SourceChecksum
;
2434 struct gl_program
*Program
; /**< Post-compile assembly code */
2437 * \name Sampler tracking
2439 * \note Each of these fields is only set post-linking.
2442 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2446 * Number of default uniform block components used by this shader.
2448 * This field is only set post-linking.
2450 unsigned num_uniform_components
;
2453 * Number of combined uniform components used by this shader.
2455 * This field is only set post-linking. It is the sum of the uniform block
2456 * sizes divided by sizeof(float), and num_uniform_compoennts.
2458 unsigned num_combined_uniform_components
;
2460 struct exec_list
*ir
;
2461 struct exec_list
*packed_varyings
;
2462 struct exec_list
*fragdata_arrays
;
2463 struct glsl_symbol_table
*symbols
;
2466 static inline GLbitfield
gl_external_samplers(struct gl_program
*prog
)
2468 GLbitfield external_samplers
= 0;
2469 GLbitfield mask
= prog
->SamplersUsed
;
2472 int idx
= u_bit_scan(&mask
);
2473 if (prog
->sh
.SamplerTargets
[idx
] == TEXTURE_EXTERNAL_INDEX
)
2474 external_samplers
|= (1 << idx
);
2477 return external_samplers
;
2481 * Compile status enum. compile_skipped is used to indicate the compile
2482 * was skipped due to the shader matching one that's been seen before by
2483 * the on-disk cache.
2485 enum gl_compile_status
2487 compile_failure
= 0,
2494 * A GLSL shader object.
2498 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2499 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2500 * Must be the first field.
2503 gl_shader_stage Stage
;
2504 GLuint Name
; /**< AKA the handle */
2505 GLint RefCount
; /**< Reference count */
2506 GLchar
*Label
; /**< GL_KHR_debug */
2507 unsigned char sha1
[20]; /**< SHA1 hash of pre-processed source */
2508 GLboolean DeletePending
;
2509 enum gl_compile_status CompileStatus
;
2510 bool IsES
; /**< True if this shader uses GLSL ES */
2513 unsigned SourceChecksum
; /**< for debug/logging purposes */
2515 const GLchar
*Source
; /**< Source code string */
2517 const GLchar
*FallbackSource
; /**< Fallback string used by on-disk cache*/
2521 unsigned Version
; /**< GLSL version used for linking */
2523 struct exec_list
*ir
;
2524 struct glsl_symbol_table
*symbols
;
2527 * A bitmask of gl_advanced_blend_mode values
2529 GLbitfield BlendSupport
;
2532 * Whether early fragment tests are enabled as defined by
2533 * ARB_shader_image_load_store.
2535 bool EarlyFragmentTests
;
2537 bool ARB_fragment_coord_conventions_enable
;
2539 bool redeclares_gl_fragcoord
;
2540 bool uses_gl_fragcoord
;
2542 bool PostDepthCoverage
;
2546 * Fragment shader state from GLSL 1.50 layout qualifiers.
2548 bool origin_upper_left
;
2549 bool pixel_center_integer
;
2552 * Whether bindless_sampler/bindless_image, and respectively
2553 * bound_sampler/bound_image are declared at global scope as defined by
2554 * ARB_bindless_texture.
2556 bool bindless_sampler
;
2557 bool bindless_image
;
2561 /** Global xfb_stride out qualifier if any */
2562 GLuint TransformFeedbackBufferStride
[MAX_FEEDBACK_BUFFERS
];
2564 struct gl_shader_info info
;
2568 struct gl_uniform_buffer_variable
2573 * Name of the uniform as seen by glGetUniformIndices.
2575 * glGetUniformIndices requires that the block instance index \b not be
2576 * present in the name of queried uniforms.
2579 * \c gl_uniform_buffer_variable::IndexName and
2580 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2584 const struct glsl_type
*Type
;
2585 unsigned int Offset
;
2590 enum gl_uniform_block_packing
2599 struct gl_uniform_block
2601 /** Declared name of the uniform block */
2604 /** Array of supplemental information about UBO ir_variables. */
2605 struct gl_uniform_buffer_variable
*Uniforms
;
2609 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2610 * with glBindBufferBase to bind a buffer object to this uniform block. When
2611 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2616 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2617 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2619 GLuint UniformBufferSize
;
2621 /** Stages that reference this block */
2625 * Linearized array index for uniform block instance arrays
2627 * Given a uniform block instance array declared with size
2628 * blk[s_0][s_1]..[s_m], the block referenced by blk[i_0][i_1]..[i_m] will
2629 * have the linearized array index
2632 * i_m + ∑ i_j * ∏ s_k
2635 * For a uniform block instance that is not an array, this is always 0.
2637 uint8_t linearized_array_index
;
2640 * Layout specified in the shader
2642 * This isn't accessible through the API, but it is used while
2643 * cross-validating uniform blocks.
2645 enum gl_uniform_block_packing _Packing
;
2646 GLboolean _RowMajor
;
2650 * Structure that represents a reference to an atomic buffer from some
2653 struct gl_active_atomic_buffer
2655 /** Uniform indices of the atomic counters declared within it. */
2659 /** Binding point index associated with it. */
2662 /** Minimum reasonable size it is expected to have. */
2665 /** Shader stages making use of it. */
2666 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2670 * Data container for shader queries. This holds only the minimal
2671 * amount of required information for resource queries to work.
2673 struct gl_shader_variable
2676 * Declared type of the variable
2678 const struct glsl_type
*type
;
2681 * If the variable is in an interface block, this is the type of the block.
2683 const struct glsl_type
*interface_type
;
2686 * For variables inside structs (possibly recursively), this is the
2687 * outermost struct type.
2689 const struct glsl_type
*outermost_struct_type
;
2692 * Declared name of the variable
2697 * Storage location of the base of this variable
2699 * The precise meaning of this field depends on the nature of the variable.
2701 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2702 * - Vertex shader output: one of the values from \c gl_varying_slot.
2703 * - Geometry shader input: one of the values from \c gl_varying_slot.
2704 * - Geometry shader output: one of the values from \c gl_varying_slot.
2705 * - Fragment shader input: one of the values from \c gl_varying_slot.
2706 * - Fragment shader output: one of the values from \c gl_frag_result.
2707 * - Uniforms: Per-stage uniform slot number for default uniform block.
2708 * - Uniforms: Index within the uniform block definition for UBO members.
2709 * - Non-UBO Uniforms: explicit location until linking then reused to
2710 * store uniform slot number.
2711 * - Other: This field is not currently used.
2713 * If the variable is a uniform, shader input, or shader output, and the
2714 * slot has not been assigned, the value will be -1.
2719 * Specifies the first component the variable is stored in as per
2720 * ARB_enhanced_layouts.
2722 unsigned component
:2;
2725 * Output index for dual source blending.
2728 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2734 * Specifies whether a shader input/output is per-patch in tessellation
2740 * Storage class of the variable.
2742 * \sa (n)ir_variable_mode
2747 * Interpolation mode for shader inputs / outputs
2749 * \sa glsl_interp_mode
2751 unsigned interpolation
:2;
2754 * Was the location explicitly set in the shader?
2756 * If the location is explicitly set in the shader, it \b cannot be changed
2757 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2760 unsigned explicit_location
:1;
2763 * Precision qualifier.
2765 unsigned precision
:2;
2769 * Active resource in a gl_shader_program
2771 struct gl_program_resource
2773 GLenum Type
; /** Program interface type. */
2774 const void *Data
; /** Pointer to resource associated data structure. */
2775 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2779 * Link status enum. linking_skipped is used to indicate linking
2780 * was skipped due to the shader being loaded from the on-disk cache.
2784 linking_failure
= 0,
2790 * A data structure to be shared by gl_shader_program and gl_program.
2792 struct gl_shader_program_data
2794 GLint RefCount
; /**< Reference count */
2796 /** SHA1 hash of linked shader program */
2797 unsigned char sha1
[20];
2799 unsigned NumUniformStorage
;
2800 unsigned NumHiddenUniforms
;
2801 struct gl_uniform_storage
*UniformStorage
;
2803 unsigned NumUniformBlocks
;
2804 struct gl_uniform_block
*UniformBlocks
;
2806 unsigned NumShaderStorageBlocks
;
2807 struct gl_uniform_block
*ShaderStorageBlocks
;
2809 struct gl_active_atomic_buffer
*AtomicBuffers
;
2810 unsigned NumAtomicBuffers
;
2812 /* Shader cache variables used during restore */
2813 unsigned NumUniformDataSlots
;
2814 union gl_constant_value
*UniformDataSlots
;
2816 bool cache_fallback
;
2818 /* TODO: This used by Gallium drivers to skip the cache on tgsi fallback.
2819 * All structures (gl_program, uniform storage, etc) will get recreated
2820 * even though we have already loaded them from cache. Once the i965 cache
2821 * lands we should switch to using the cache_fallback support.
2825 /** List of all active resources after linking. */
2826 struct gl_program_resource
*ProgramResourceList
;
2827 unsigned NumProgramResourceList
;
2829 enum gl_link_status LinkStatus
; /**< GL_LINK_STATUS */
2830 GLboolean Validated
;
2833 unsigned Version
; /**< GLSL version used for linking */
2835 /* Mask of stages this program was linked against */
2836 unsigned linked_stages
;
2840 * A GLSL program object.
2841 * Basically a linked collection of vertex and fragment shaders.
2843 struct gl_shader_program
2845 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2846 GLuint Name
; /**< aka handle or ID */
2847 GLchar
*Label
; /**< GL_KHR_debug */
2848 GLint RefCount
; /**< Reference count */
2849 GLboolean DeletePending
;
2852 * Is the application intending to glGetProgramBinary this program?
2854 GLboolean BinaryRetreivableHint
;
2857 * Indicates whether program can be bound for individual pipeline stages
2858 * using UseProgramStages after it is next linked.
2860 GLboolean SeparateShader
;
2862 GLuint NumShaders
; /**< number of attached shaders */
2863 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2866 * User-defined attribute bindings
2868 * These are set via \c glBindAttribLocation and are used to direct the
2869 * GLSL linker. These are \b not the values used in the compiled shader,
2870 * and they are \b not the values returned by \c glGetAttribLocation.
2872 struct string_to_uint_map
*AttributeBindings
;
2875 * User-defined fragment data bindings
2877 * These are set via \c glBindFragDataLocation and are used to direct the
2878 * GLSL linker. These are \b not the values used in the compiled shader,
2879 * and they are \b not the values returned by \c glGetFragDataLocation.
2881 struct string_to_uint_map
*FragDataBindings
;
2882 struct string_to_uint_map
*FragDataIndexBindings
;
2885 * Transform feedback varyings last specified by
2886 * glTransformFeedbackVaryings().
2888 * For the current set of transform feedback varyings used for transform
2889 * feedback output, see LinkedTransformFeedback.
2893 /** Global xfb_stride out qualifier if any */
2894 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2896 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2897 } TransformFeedback
;
2899 struct gl_program
*last_vert_prog
;
2901 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2902 enum gl_frag_depth_layout FragDepthLayout
;
2905 * Geometry shader state - copied into gl_program by
2906 * _mesa_copy_linked_program_data().
2911 bool UsesEndPrimitive
;
2916 * Compute shader state - copied into gl_program by
2917 * _mesa_copy_linked_program_data().
2921 * Size of shared variables accessed by the compute shader.
2923 unsigned SharedSize
;
2926 /** Data shared by gl_program and gl_shader_program */
2927 struct gl_shader_program_data
*data
;
2930 * Mapping from GL uniform locations returned by \c glUniformLocation to
2931 * UniformStorage entries. Arrays will have multiple contiguous slots
2932 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2934 unsigned NumUniformRemapTable
;
2935 struct gl_uniform_storage
**UniformRemapTable
;
2938 * Sometimes there are empty slots left over in UniformRemapTable after we
2939 * allocate slots to explicit locations. This list stores the blocks of
2940 * continuous empty slots inside UniformRemapTable.
2942 struct exec_list EmptyUniformLocations
;
2945 * Total number of explicit uniform location including inactive uniforms.
2947 unsigned NumExplicitUniformLocations
;
2950 * Map of active uniform names to locations
2952 * Maps any active uniform that is not an array element to a location.
2953 * Each active uniform, including individual structure members will appear
2954 * in this map. This roughly corresponds to the set of names that would be
2955 * enumerated by \c glGetActiveUniform.
2957 struct string_to_uint_map
*UniformHash
;
2959 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2961 bool IsES
; /**< True if this program uses GLSL ES */
2964 * Per-stage shaders resulting from the first stage of linking.
2966 * Set of linked shaders for this program. The array is accessed using the
2967 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2970 struct gl_linked_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2972 /* True if any of the fragment shaders attached to this program use:
2973 * #extension ARB_fragment_coord_conventions: enable
2975 GLboolean ARB_fragment_coord_conventions_enable
;
2979 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2980 #define GLSL_LOG 0x2 /**< Write shaders to files */
2981 #define GLSL_UNIFORMS 0x4 /**< Print glUniform calls */
2982 #define GLSL_NOP_VERT 0x8 /**< Force no-op vertex shaders */
2983 #define GLSL_NOP_FRAG 0x10 /**< Force no-op fragment shaders */
2984 #define GLSL_USE_PROG 0x20 /**< Log glUseProgram calls */
2985 #define GLSL_REPORT_ERRORS 0x40 /**< Print compilation errors */
2986 #define GLSL_DUMP_ON_ERROR 0x80 /**< Dump shaders to stderr on compile error */
2987 #define GLSL_CACHE_INFO 0x100 /**< Print debug information about shader cache */
2988 #define GLSL_CACHE_FALLBACK 0x200 /**< Force shader cache fallback paths */
2992 * Context state for GLSL vertex/fragment shaders.
2993 * Extended to support pipeline object
2995 struct gl_pipeline_object
2997 /** Name of the pipeline object as received from glGenProgramPipelines.
2998 * It would be 0 for shaders without separate shader objects.
3004 GLchar
*Label
; /**< GL_KHR_debug */
3007 * Programs used for rendering
3009 * There is a separate program set for each shader stage.
3011 struct gl_program
*CurrentProgram
[MESA_SHADER_STAGES
];
3013 struct gl_shader_program
*ReferencedPrograms
[MESA_SHADER_STAGES
];
3016 * Program used by glUniform calls.
3018 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
3020 struct gl_shader_program
*ActiveProgram
;
3022 GLbitfield Flags
; /**< Mask of GLSL_x flags */
3024 GLboolean EverBound
; /**< Has the pipeline object been created */
3026 GLboolean Validated
; /**< Pipeline Validation status */
3032 * Context state for GLSL pipeline shaders.
3034 struct gl_pipeline_shader_state
3036 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
3037 struct gl_pipeline_object
*Current
;
3039 /* Default Object to ensure that _Shader is never NULL */
3040 struct gl_pipeline_object
*Default
;
3042 /** Pipeline objects */
3043 struct _mesa_HashTable
*Objects
;
3047 * Compiler options for a single GLSL shaders type
3049 struct gl_shader_compiler_options
3051 /** Driver-selectable options: */
3052 GLboolean EmitNoLoops
;
3053 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
3054 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
3055 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
3056 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
3057 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
3058 * gl_CullDistance together from
3059 * float[8] to vec4[2]
3063 * \name Forms of indirect addressing the driver cannot do.
3066 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
3067 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
3068 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
3069 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
3070 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
3073 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
3074 GLuint MaxUnrollIterations
;
3077 * Optimize code for array of structures backends.
3079 * This is a proxy for:
3080 * - preferring DP4 instructions (rather than MUL/MAD) for
3081 * matrix * vector operations, such as position transformation.
3083 GLboolean OptimizeForAOS
;
3085 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
3087 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
3088 GLboolean ClampBlockIndicesToArrayBounds
;
3090 const struct nir_shader_compiler_options
*NirOptions
;
3095 * Occlusion/timer query object.
3097 struct gl_query_object
3099 GLenum Target
; /**< The query target, when active */
3100 GLuint Id
; /**< hash table ID/name */
3101 GLchar
*Label
; /**< GL_KHR_debug */
3102 GLuint64EXT Result
; /**< the counter */
3103 GLboolean Active
; /**< inside Begin/EndQuery */
3104 GLboolean Ready
; /**< result is ready? */
3105 GLboolean EverBound
;/**< has query object ever been bound */
3106 GLuint Stream
; /**< The stream */
3111 * Context state for query objects.
3113 struct gl_query_state
3115 struct _mesa_HashTable
*QueryObjects
;
3116 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
3117 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
3119 /** GL_NV_conditional_render */
3120 struct gl_query_object
*CondRenderQuery
;
3122 /** GL_EXT_transform_feedback */
3123 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
3124 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
3126 /** GL_ARB_transform_feedback_overflow_query */
3127 struct gl_query_object
*TransformFeedbackOverflow
[MAX_VERTEX_STREAMS
];
3128 struct gl_query_object
*TransformFeedbackOverflowAny
;
3130 /** GL_ARB_timer_query */
3131 struct gl_query_object
*TimeElapsed
;
3133 /** GL_ARB_pipeline_statistics_query */
3134 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3136 GLenum CondRenderMode
;
3140 /** Sync object state */
3141 struct gl_sync_object
3143 GLenum Type
; /**< GL_SYNC_FENCE */
3144 GLuint Name
; /**< Fence name */
3145 GLchar
*Label
; /**< GL_KHR_debug */
3146 GLint RefCount
; /**< Reference count */
3147 GLboolean DeletePending
; /**< Object was deleted while there were still
3148 * live references (e.g., sync not yet finished)
3150 GLenum SyncCondition
;
3151 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3152 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3157 * State which can be shared by multiple contexts:
3159 struct gl_shared_state
3161 mtx_t Mutex
; /**< for thread safety */
3162 GLint RefCount
; /**< Reference count */
3163 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3164 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3165 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3167 /** Default texture objects (shared by all texture units) */
3168 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3170 /** Fallback texture used when a bound texture is incomplete */
3171 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3174 * \name Thread safety and statechange notification for texture
3177 * \todo Improve the granularity of locking.
3180 mtx_t TexMutex
; /**< texobj thread safety */
3181 GLuint TextureStateStamp
; /**< state notification for shared tex */
3184 /** Default buffer object for vertex arrays that aren't in VBOs */
3185 struct gl_buffer_object
*NullBufferObj
;
3188 * \name Vertex/geometry/fragment programs
3191 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3192 struct gl_program
*DefaultVertexProgram
;
3193 struct gl_program
*DefaultFragmentProgram
;
3196 /* GL_ATI_fragment_shader */
3197 struct _mesa_HashTable
*ATIShaders
;
3198 struct ati_fragment_shader
*DefaultFragmentShader
;
3200 struct _mesa_HashTable
*BufferObjects
;
3202 /** Table of both gl_shader and gl_shader_program objects */
3203 struct _mesa_HashTable
*ShaderObjects
;
3205 /* GL_EXT_framebuffer_object */
3206 struct _mesa_HashTable
*RenderBuffers
;
3207 struct _mesa_HashTable
*FrameBuffers
;
3210 struct set
*SyncObjects
;
3212 /** GL_ARB_sampler_objects */
3213 struct _mesa_HashTable
*SamplerObjects
;
3216 * Some context in this share group was affected by a GPU reset
3218 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3219 * been affected by a GPU reset must also return
3220 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3222 * Once this field becomes true, it is never reset to false.
3224 bool ShareGroupReset
;
3230 * Renderbuffers represent drawing surfaces such as color, depth and/or
3231 * stencil. A framebuffer object has a set of renderbuffers.
3232 * Drivers will typically derive subclasses of this type.
3234 struct gl_renderbuffer
3236 mtx_t Mutex
; /**< for thread safety */
3237 GLuint ClassID
; /**< Useful for drivers */
3239 GLchar
*Label
; /**< GL_KHR_debug */
3241 GLuint Width
, Height
;
3243 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3244 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3246 * True for renderbuffers that wrap textures, giving the driver a chance to
3247 * flush render caches through the FinishRenderTexture hook.
3249 * Drivers may also set this on renderbuffers other than those generated by
3250 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3251 * called without a rb->TexImage.
3253 GLboolean NeedsFinishRenderTexture
;
3255 GLenum InternalFormat
; /**< The user-specified format */
3256 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3257 GL_STENCIL_INDEX. */
3258 mesa_format Format
; /**< The actual renderbuffer memory format */
3260 * Pointer to the texture image if this renderbuffer wraps a texture,
3263 * Note that the reference on the gl_texture_object containing this
3264 * TexImage is held by the gl_renderbuffer_attachment.
3266 struct gl_texture_image
*TexImage
;
3268 /** Delete this renderbuffer */
3269 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3271 /** Allocate new storage for this renderbuffer */
3272 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3273 struct gl_renderbuffer
*rb
,
3274 GLenum internalFormat
,
3275 GLuint width
, GLuint height
);
3280 * A renderbuffer attachment points to either a texture object (and specifies
3281 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3283 struct gl_renderbuffer_attachment
3285 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3289 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3290 * application supplied renderbuffer object.
3292 struct gl_renderbuffer
*Renderbuffer
;
3295 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3296 * supplied texture object.
3298 struct gl_texture_object
*Texture
;
3299 GLuint TextureLevel
; /**< Attached mipmap level. */
3300 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3301 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3302 * and 2D array textures */
3308 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3309 * In C++ terms, think of this as a base class from which device drivers
3310 * will make derived classes.
3312 struct gl_framebuffer
3314 mtx_t Mutex
; /**< for thread safety */
3316 * If zero, this is a window system framebuffer. If non-zero, this
3317 * is a FBO framebuffer; note that for some devices (i.e. those with
3318 * a natural pixel coordinate system for FBOs that differs from the
3319 * OpenGL/Mesa coordinate system), this means that the viewport,
3320 * polygon face orientation, and polygon stipple will have to be inverted.
3325 GLchar
*Label
; /**< GL_KHR_debug */
3327 GLboolean DeletePending
;
3330 * The framebuffer's visual. Immutable if this is a window system buffer.
3331 * Computed from attachments if user-made FBO.
3333 struct gl_config Visual
;
3336 * Size of frame buffer in pixels. If there are no attachments, then both
3339 GLuint Width
, Height
;
3342 * In the case that the framebuffer has no attachment (i.e.
3343 * GL_ARB_framebuffer_no_attachments) then the geometry of
3344 * the framebuffer is specified by the default values.
3347 GLuint Width
, Height
, Layers
, NumSamples
;
3348 GLboolean FixedSampleLocations
;
3349 /* Derived from NumSamples by the driver so that it can choose a valid
3350 * value for the hardware.
3355 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3356 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3357 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3364 /** \name Derived Z buffer stuff */
3366 GLuint _DepthMax
; /**< Max depth buffer value */
3367 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3368 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3371 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3374 /** Whether one of Attachment has Type != GL_NONE
3375 * NOTE: the values for Width and Height are set to 0 in case of having
3376 * no attachments, a backend driver supporting the extension
3377 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3378 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3379 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3380 * _Ymax do NOT take into account _HasAttachments being false). To get the
3381 * geometry of the framebuffer, the helper functions
3382 * _mesa_geometric_width(),
3383 * _mesa_geometric_height(),
3384 * _mesa_geometric_samples() and
3385 * _mesa_geometric_layers()
3386 * are available that check _HasAttachments.
3388 bool _HasAttachments
;
3390 GLbitfield _IntegerBuffers
; /**< Which color buffers are integer valued */
3392 /* ARB_color_buffer_float */
3393 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3394 GLboolean _HasSNormOrFloatColorBuffer
;
3397 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3398 * is not layered. For cube maps and cube map arrays, each cube face
3399 * counts as a layer. As the case for Width, Height a backend driver
3400 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3401 * in the case that _HasAttachments is false
3403 GLuint MaxNumLayers
;
3405 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3406 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3408 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3409 * attribute group and GL_PIXEL attribute group, respectively.
3411 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3412 GLenum ColorReadBuffer
;
3414 /** Computed from ColorDraw/ReadBuffer above */
3415 GLuint _NumColorDrawBuffers
;
3416 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3417 GLint _ColorReadBufferIndex
; /* -1 = None */
3418 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3419 struct gl_renderbuffer
*_ColorReadBuffer
;
3421 /** Delete this framebuffer */
3422 void (*Delete
)(struct gl_framebuffer
*fb
);
3427 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3431 GLushort RangeMin
; /**< min value exponent */
3432 GLushort RangeMax
; /**< max value exponent */
3433 GLushort Precision
; /**< number of mantissa bits */
3438 * Limits for vertex, geometry and fragment programs/shaders.
3440 struct gl_program_constants
3442 /* logical limits */
3443 GLuint MaxInstructions
;
3444 GLuint MaxAluInstructions
;
3445 GLuint MaxTexInstructions
;
3446 GLuint MaxTexIndirections
;
3449 GLuint MaxAddressRegs
;
3450 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3451 GLuint MaxParameters
;
3452 GLuint MaxLocalParams
;
3453 GLuint MaxEnvParams
;
3454 /* native/hardware limits */
3455 GLuint MaxNativeInstructions
;
3456 GLuint MaxNativeAluInstructions
;
3457 GLuint MaxNativeTexInstructions
;
3458 GLuint MaxNativeTexIndirections
;
3459 GLuint MaxNativeAttribs
;
3460 GLuint MaxNativeTemps
;
3461 GLuint MaxNativeAddressRegs
;
3462 GLuint MaxNativeParameters
;
3464 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3467 * \name Per-stage input / output limits
3469 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3470 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3471 * ES). This is stored as \c gl_constants::MaxVarying.
3473 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3474 * variables. Each stage as a certain number of outputs that it can feed
3475 * to the next stage and a certain number inputs that it can consume from
3476 * the previous stage.
3478 * Vertex shader inputs do not participate this in this accounting.
3479 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3481 * Fragment shader outputs do not participate this in this accounting.
3482 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3485 GLuint MaxInputComponents
;
3486 GLuint MaxOutputComponents
;
3489 /* ES 2.0 and GL_ARB_ES2_compatibility */
3490 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3491 struct gl_precision LowInt
, MediumInt
, HighInt
;
3492 /* GL_ARB_uniform_buffer_object */
3493 GLuint MaxUniformBlocks
;
3494 GLuint MaxCombinedUniformComponents
;
3495 GLuint MaxTextureImageUnits
;
3497 /* GL_ARB_shader_atomic_counters */
3498 GLuint MaxAtomicBuffers
;
3499 GLuint MaxAtomicCounters
;
3501 /* GL_ARB_shader_image_load_store */
3502 GLuint MaxImageUniforms
;
3504 /* GL_ARB_shader_storage_buffer_object */
3505 GLuint MaxShaderStorageBlocks
;
3510 * Constants which may be overridden by device driver during context creation
3511 * but are never changed after that.
3515 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3516 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3517 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3518 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3519 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3520 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3521 GLuint MaxTextureCoordUnits
;
3522 GLuint MaxCombinedTextureImageUnits
;
3523 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3524 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3525 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3526 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3528 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3530 GLuint MaxArrayLockSize
;
3534 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3535 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3536 GLfloat PointSizeGranularity
;
3537 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3538 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3539 GLfloat LineWidthGranularity
;
3541 GLuint MaxClipPlanes
;
3543 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3544 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3546 GLuint MaxViewportWidth
, MaxViewportHeight
;
3547 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3548 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3552 } ViewportBounds
; /**< GL_ARB_viewport_array */
3553 GLuint MaxWindowRectangles
; /**< GL_EXT_window_rectangles */
3555 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3556 GLuint MaxProgramMatrices
;
3557 GLuint MaxProgramMatrixStackDepth
;
3560 GLuint SamplesPassed
;
3563 GLuint PrimitivesGenerated
;
3564 GLuint PrimitivesWritten
;
3565 GLuint VerticesSubmitted
;
3566 GLuint PrimitivesSubmitted
;
3567 GLuint VsInvocations
;
3569 GLuint TessInvocations
;
3570 GLuint GsInvocations
;
3571 GLuint GsPrimitives
;
3572 GLuint FsInvocations
;
3573 GLuint ComputeInvocations
;
3574 GLuint ClInPrimitives
;
3575 GLuint ClOutPrimitives
;
3578 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3580 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3581 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3582 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3585 * GL_ARB_framebuffer_no_attachments
3587 GLuint MaxFramebufferWidth
;
3588 GLuint MaxFramebufferHeight
;
3589 GLuint MaxFramebufferLayers
;
3590 GLuint MaxFramebufferSamples
;
3592 /** Number of varying vectors between any two shader stages. */
3596 * GL_ARB_uniform_buffer_object
3598 GLuint MaxCombinedUniformBlocks
;
3599 GLuint MaxUniformBufferBindings
;
3600 GLuint MaxUniformBlockSize
;
3601 GLuint UniformBufferOffsetAlignment
;
3605 * GL_ARB_shader_storage_buffer_object
3607 GLuint MaxCombinedShaderStorageBlocks
;
3608 GLuint MaxShaderStorageBufferBindings
;
3609 GLuint MaxShaderStorageBlockSize
;
3610 GLuint ShaderStorageBufferOffsetAlignment
;
3614 * GL_ARB_explicit_uniform_location
3616 GLuint MaxUserAssignableUniformLocations
;
3618 /** geometry shader */
3619 GLuint MaxGeometryOutputVertices
;
3620 GLuint MaxGeometryTotalOutputComponents
;
3622 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3625 * Changes default GLSL extension behavior from "error" to "warn". It's out
3626 * of spec, but it can make some apps work that otherwise wouldn't.
3628 GLboolean ForceGLSLExtensionsWarn
;
3631 * If non-zero, forces GLSL shaders to behave as if they began
3632 * with "#version ForceGLSLVersion".
3634 GLuint ForceGLSLVersion
;
3637 * Allow GLSL #extension directives in the middle of shaders.
3639 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3642 * Allow GLSL built-in variables to be redeclared verbatim
3644 GLboolean AllowGLSLBuiltinVariableRedeclaration
;
3647 * Allow creating a higher compat profile (version 3.1+) for apps that
3648 * request it. Be careful when adding that driconf option because some
3649 * features are unimplemented and might not work correctly.
3651 GLboolean AllowHigherCompatVersion
;
3654 * Force computing the absolute value for sqrt() and inversesqrt() to follow
3655 * D3D9 when apps rely on this behaviour.
3657 GLboolean ForceGLSLAbsSqrt
;
3660 * Force uninitialized variables to default to zero.
3662 GLboolean GLSLZeroInit
;
3665 * Does the driver support real 32-bit integers? (Otherwise, integers are
3666 * simulated via floats.)
3668 GLboolean NativeIntegers
;
3671 * Does VertexID count from zero or from base vertex?
3674 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3675 * ignored and need not be set.
3677 bool VertexID_is_zero_based
;
3680 * If the driver supports real 32-bit integers, what integer value should be
3681 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3683 GLuint UniformBooleanTrue
;
3686 * Maximum amount of time, measured in nanseconds, that the server can wait.
3688 GLuint64 MaxServerWaitTimeout
;
3690 /** GL_EXT_provoking_vertex */
3691 GLboolean QuadsFollowProvokingVertexConvention
;
3693 /** GL_ARB_viewport_array */
3694 GLenum LayerAndVPIndexProvokingVertex
;
3696 /** OpenGL version 3.0 */
3697 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3699 /** OpenGL version 3.2 */
3700 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3702 /** OpenGL version 4.4 */
3703 GLuint MaxVertexAttribStride
;
3705 /** GL_EXT_transform_feedback */
3706 GLuint MaxTransformFeedbackBuffers
;
3707 GLuint MaxTransformFeedbackSeparateComponents
;
3708 GLuint MaxTransformFeedbackInterleavedComponents
;
3709 GLuint MaxVertexStreams
;
3711 /** GL_EXT_gpu_shader4 */
3712 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3714 /** GL_ARB_texture_gather */
3715 GLuint MinProgramTextureGatherOffset
;
3716 GLuint MaxProgramTextureGatherOffset
;
3717 GLuint MaxProgramTextureGatherComponents
;
3719 /* GL_ARB_robustness */
3720 GLenum ResetStrategy
;
3722 /* GL_KHR_robustness */
3723 GLboolean RobustAccess
;
3725 /* GL_ARB_blend_func_extended */
3726 GLuint MaxDualSourceDrawBuffers
;
3729 * Whether the implementation strips out and ignores texture borders.
3731 * Many GPU hardware implementations don't support rendering with texture
3732 * borders and mipmapped textures. (Note: not static border color, but the
3733 * old 1-pixel border around each edge). Implementations then have to do
3734 * slow fallbacks to be correct, or just ignore the border and be fast but
3735 * wrong. Setting the flag strips the border off of TexImage calls,
3736 * providing "fast but wrong" at significantly reduced driver complexity.
3738 * Texture borders are deprecated in GL 3.0.
3740 GLboolean StripTextureBorder
;
3743 * For drivers which can do a better job at eliminating unused uniforms
3744 * than the GLSL compiler.
3746 * XXX Remove these as soon as a better solution is available.
3748 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3750 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3751 bool GLSLFragCoordIsSysVal
;
3752 bool GLSLFrontFacingIsSysVal
;
3755 * Run the minimum amount of GLSL optimizations to be able to link
3756 * shaders optimally (eliminate dead varyings and uniforms) and just do
3757 * all the necessary lowering.
3759 bool GLSLOptimizeConservatively
;
3762 * True if gl_TessLevelInner/Outer[] in the TES should be inputs
3763 * (otherwise, they're system values).
3765 bool GLSLTessLevelsAsInputs
;
3768 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3769 * than passing the transform feedback object to the drawing function.
3771 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3773 /** GL_ARB_map_buffer_alignment */
3774 GLuint MinMapBufferAlignment
;
3777 * Disable varying packing. This is out of spec, but potentially useful
3778 * for older platforms that supports a limited number of texture
3779 * indirections--on these platforms, unpacking the varyings in the fragment
3780 * shader increases the number of texture indirections by 1, which might
3781 * make some shaders not executable at all.
3783 * Drivers that support transform feedback must set this value to GL_FALSE.
3785 GLboolean DisableVaryingPacking
;
3788 * Should meaningful names be generated for compiler temporary variables?
3790 * Generally, it is not useful to have the compiler generate "meaningful"
3791 * names for temporary variables that it creates. This can, however, be a
3792 * useful debugging aid. In Mesa debug builds or release builds when
3793 * MESA_GLSL is set at run-time, meaningful names will be generated.
3794 * Drivers can also force names to be generated by setting this field.
3795 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3796 * vertex shader assembly) is set at run-time.
3798 bool GenerateTemporaryNames
;
3801 * Maximum value supported for an index in DrawElements and friends.
3803 * This must be at least (1ull<<24)-1. The default value is
3806 * \since ES 3.0 or GL_ARB_ES3_compatibility
3807 * \sa _mesa_init_constants
3809 GLuint64 MaxElementIndex
;
3812 * Disable interpretation of line continuations (lines ending with a
3813 * backslash character ('\') in GLSL source.
3815 GLboolean DisableGLSLLineContinuations
;
3817 /** GL_ARB_texture_multisample */
3818 GLint MaxColorTextureSamples
;
3819 GLint MaxDepthTextureSamples
;
3820 GLint MaxIntegerSamples
;
3823 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3824 * samples are laid out in a rectangular grid roughly corresponding to
3825 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3826 * are used to map indices of rectangular grid to sample numbers within
3827 * a pixel. This mapping of indices to sample numbers must be initialized
3828 * by the driver for the target hardware. For example, if we have the 8X
3829 * MSAA sample number layout (sample positions) for XYZ hardware:
3831 * sample indices layout sample number layout
3832 * --------- ---------
3833 * | 0 | 1 | | a | b |
3834 * --------- ---------
3835 * | 2 | 3 | | c | d |
3836 * --------- ---------
3837 * | 4 | 5 | | e | f |
3838 * --------- ---------
3839 * | 6 | 7 | | g | h |
3840 * --------- ---------
3842 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3844 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3846 * SampleMap8x = {a, b, c, d, e, f, g, h};
3848 * Follow the logic for sample counts 2-8.
3850 * For 16x the sample indices layout as a 4x4 grid as follows:
3862 uint8_t SampleMap2x
[2];
3863 uint8_t SampleMap4x
[4];
3864 uint8_t SampleMap8x
[8];
3865 uint8_t SampleMap16x
[16];
3867 /** GL_ARB_shader_atomic_counters */
3868 GLuint MaxAtomicBufferBindings
;
3869 GLuint MaxAtomicBufferSize
;
3870 GLuint MaxCombinedAtomicBuffers
;
3871 GLuint MaxCombinedAtomicCounters
;
3873 /** GL_ARB_vertex_attrib_binding */
3874 GLint MaxVertexAttribRelativeOffset
;
3875 GLint MaxVertexAttribBindings
;
3877 /* GL_ARB_shader_image_load_store */
3878 GLuint MaxImageUnits
;
3879 GLuint MaxCombinedShaderOutputResources
;
3880 GLuint MaxImageSamples
;
3881 GLuint MaxCombinedImageUniforms
;
3883 /** GL_ARB_compute_shader */
3884 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3885 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3886 GLuint MaxComputeWorkGroupInvocations
;
3887 GLuint MaxComputeSharedMemorySize
;
3889 /** GL_ARB_compute_variable_group_size */
3890 GLuint MaxComputeVariableGroupSize
[3]; /* Array of x, y, z dimensions */
3891 GLuint MaxComputeVariableGroupInvocations
;
3893 /** GL_ARB_gpu_shader5 */
3894 GLfloat MinFragmentInterpolationOffset
;
3895 GLfloat MaxFragmentInterpolationOffset
;
3897 GLboolean FakeSWMSAA
;
3899 /** GL_KHR_context_flush_control */
3900 GLenum ContextReleaseBehavior
;
3902 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3904 /** GL_ARB_tessellation_shader */
3905 GLuint MaxPatchVertices
;
3906 GLuint MaxTessGenLevel
;
3907 GLuint MaxTessPatchComponents
;
3908 GLuint MaxTessControlTotalOutputComponents
;
3909 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3910 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3911 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3912 bool PrimitiveRestartForPatches
;
3913 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3914 * gl_LocalInvocationIndex based on
3915 * other builtin variables. */
3917 /** GL_OES_primitive_bounding_box */
3918 bool NoPrimitiveBoundingBoxOutput
;
3920 /** GL_ARB_sparse_buffer */
3921 GLuint SparseBufferPageSize
;
3923 /** Used as an input for sha1 generation in the on-disk shader cache */
3924 unsigned char *dri_config_options_sha1
;
3926 /** When drivers are OK with mapped buffers during draw and other calls. */
3927 bool AllowMappedBuffersDuringExecution
;
3932 * Enable flag for each OpenGL extension. Different device drivers will
3933 * enable different extensions at runtime.
3935 struct gl_extensions
3937 GLboolean dummy
; /* don't remove this! */
3938 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3939 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3940 GLboolean ANGLE_texture_compression_dxt
;
3941 GLboolean ARB_ES2_compatibility
;
3942 GLboolean ARB_ES3_compatibility
;
3943 GLboolean ARB_ES3_1_compatibility
;
3944 GLboolean ARB_ES3_2_compatibility
;
3945 GLboolean ARB_arrays_of_arrays
;
3946 GLboolean ARB_base_instance
;
3947 GLboolean ARB_bindless_texture
;
3948 GLboolean ARB_blend_func_extended
;
3949 GLboolean ARB_buffer_storage
;
3950 GLboolean ARB_clear_texture
;
3951 GLboolean ARB_clip_control
;
3952 GLboolean ARB_color_buffer_float
;
3953 GLboolean ARB_compute_shader
;
3954 GLboolean ARB_compute_variable_group_size
;
3955 GLboolean ARB_conditional_render_inverted
;
3956 GLboolean ARB_conservative_depth
;
3957 GLboolean ARB_copy_image
;
3958 GLboolean ARB_cull_distance
;
3959 GLboolean ARB_depth_buffer_float
;
3960 GLboolean ARB_depth_clamp
;
3961 GLboolean ARB_depth_texture
;
3962 GLboolean ARB_derivative_control
;
3963 GLboolean ARB_draw_buffers_blend
;
3964 GLboolean ARB_draw_elements_base_vertex
;
3965 GLboolean ARB_draw_indirect
;
3966 GLboolean ARB_draw_instanced
;
3967 GLboolean ARB_fragment_coord_conventions
;
3968 GLboolean ARB_fragment_layer_viewport
;
3969 GLboolean ARB_fragment_program
;
3970 GLboolean ARB_fragment_program_shadow
;
3971 GLboolean ARB_fragment_shader
;
3972 GLboolean ARB_framebuffer_no_attachments
;
3973 GLboolean ARB_framebuffer_object
;
3974 GLboolean ARB_enhanced_layouts
;
3975 GLboolean ARB_explicit_attrib_location
;
3976 GLboolean ARB_explicit_uniform_location
;
3977 GLboolean ARB_gpu_shader5
;
3978 GLboolean ARB_gpu_shader_fp64
;
3979 GLboolean ARB_gpu_shader_int64
;
3980 GLboolean ARB_half_float_vertex
;
3981 GLboolean ARB_indirect_parameters
;
3982 GLboolean ARB_instanced_arrays
;
3983 GLboolean ARB_internalformat_query
;
3984 GLboolean ARB_internalformat_query2
;
3985 GLboolean ARB_map_buffer_range
;
3986 GLboolean ARB_occlusion_query
;
3987 GLboolean ARB_occlusion_query2
;
3988 GLboolean ARB_pipeline_statistics_query
;
3989 GLboolean ARB_point_sprite
;
3990 GLboolean ARB_post_depth_coverage
;
3991 GLboolean ARB_query_buffer_object
;
3992 GLboolean ARB_robust_buffer_access_behavior
;
3993 GLboolean ARB_sample_shading
;
3994 GLboolean ARB_seamless_cube_map
;
3995 GLboolean ARB_shader_atomic_counter_ops
;
3996 GLboolean ARB_shader_atomic_counters
;
3997 GLboolean ARB_shader_ballot
;
3998 GLboolean ARB_shader_bit_encoding
;
3999 GLboolean ARB_shader_clock
;
4000 GLboolean ARB_shader_draw_parameters
;
4001 GLboolean ARB_shader_group_vote
;
4002 GLboolean ARB_shader_image_load_store
;
4003 GLboolean ARB_shader_image_size
;
4004 GLboolean ARB_shader_precision
;
4005 GLboolean ARB_shader_stencil_export
;
4006 GLboolean ARB_shader_storage_buffer_object
;
4007 GLboolean ARB_shader_texture_image_samples
;
4008 GLboolean ARB_shader_texture_lod
;
4009 GLboolean ARB_shader_viewport_layer_array
;
4010 GLboolean ARB_shading_language_packing
;
4011 GLboolean ARB_shading_language_420pack
;
4012 GLboolean ARB_shadow
;
4013 GLboolean ARB_sparse_buffer
;
4014 GLboolean ARB_stencil_texturing
;
4016 GLboolean ARB_tessellation_shader
;
4017 GLboolean ARB_texture_border_clamp
;
4018 GLboolean ARB_texture_buffer_object
;
4019 GLboolean ARB_texture_buffer_object_rgb32
;
4020 GLboolean ARB_texture_buffer_range
;
4021 GLboolean ARB_texture_compression_bptc
;
4022 GLboolean ARB_texture_compression_rgtc
;
4023 GLboolean ARB_texture_cube_map
;
4024 GLboolean ARB_texture_cube_map_array
;
4025 GLboolean ARB_texture_env_combine
;
4026 GLboolean ARB_texture_env_crossbar
;
4027 GLboolean ARB_texture_env_dot3
;
4028 GLboolean ARB_texture_float
;
4029 GLboolean ARB_texture_gather
;
4030 GLboolean ARB_texture_mirror_clamp_to_edge
;
4031 GLboolean ARB_texture_multisample
;
4032 GLboolean ARB_texture_non_power_of_two
;
4033 GLboolean ARB_texture_stencil8
;
4034 GLboolean ARB_texture_query_levels
;
4035 GLboolean ARB_texture_query_lod
;
4036 GLboolean ARB_texture_rg
;
4037 GLboolean ARB_texture_rgb10_a2ui
;
4038 GLboolean ARB_texture_view
;
4039 GLboolean ARB_timer_query
;
4040 GLboolean ARB_transform_feedback2
;
4041 GLboolean ARB_transform_feedback3
;
4042 GLboolean ARB_transform_feedback_instanced
;
4043 GLboolean ARB_transform_feedback_overflow_query
;
4044 GLboolean ARB_uniform_buffer_object
;
4045 GLboolean ARB_vertex_attrib_64bit
;
4046 GLboolean ARB_vertex_program
;
4047 GLboolean ARB_vertex_shader
;
4048 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
4049 GLboolean ARB_vertex_type_2_10_10_10_rev
;
4050 GLboolean ARB_viewport_array
;
4051 GLboolean EXT_blend_color
;
4052 GLboolean EXT_blend_equation_separate
;
4053 GLboolean EXT_blend_func_separate
;
4054 GLboolean EXT_blend_minmax
;
4055 GLboolean EXT_depth_bounds_test
;
4056 GLboolean EXT_draw_buffers2
;
4057 GLboolean EXT_framebuffer_multisample
;
4058 GLboolean EXT_framebuffer_multisample_blit_scaled
;
4059 GLboolean EXT_framebuffer_sRGB
;
4060 GLboolean EXT_gpu_program_parameters
;
4061 GLboolean EXT_gpu_shader4
;
4062 GLboolean EXT_packed_float
;
4063 GLboolean EXT_pixel_buffer_object
;
4064 GLboolean EXT_point_parameters
;
4065 GLboolean EXT_polygon_offset_clamp
;
4066 GLboolean EXT_provoking_vertex
;
4067 GLboolean EXT_shader_integer_mix
;
4068 GLboolean EXT_shader_samples_identical
;
4069 GLboolean EXT_stencil_two_side
;
4070 GLboolean EXT_texture_array
;
4071 GLboolean EXT_texture_compression_latc
;
4072 GLboolean EXT_texture_compression_s3tc
;
4073 GLboolean EXT_texture_env_dot3
;
4074 GLboolean EXT_texture_filter_anisotropic
;
4075 GLboolean EXT_texture_integer
;
4076 GLboolean EXT_texture_mirror_clamp
;
4077 GLboolean EXT_texture_shared_exponent
;
4078 GLboolean EXT_texture_snorm
;
4079 GLboolean EXT_texture_sRGB
;
4080 GLboolean EXT_texture_sRGB_decode
;
4081 GLboolean EXT_texture_swizzle
;
4082 GLboolean EXT_transform_feedback
;
4083 GLboolean EXT_timer_query
;
4084 GLboolean EXT_vertex_array_bgra
;
4085 GLboolean EXT_window_rectangles
;
4086 GLboolean OES_copy_image
;
4087 GLboolean OES_primitive_bounding_box
;
4088 GLboolean OES_sample_variables
;
4089 GLboolean OES_standard_derivatives
;
4090 GLboolean OES_texture_buffer
;
4091 GLboolean OES_texture_cube_map_array
;
4092 GLboolean OES_viewport_array
;
4093 /* vendor extensions */
4094 GLboolean AMD_performance_monitor
;
4095 GLboolean AMD_pinned_memory
;
4096 GLboolean AMD_seamless_cubemap_per_texture
;
4097 GLboolean AMD_vertex_shader_layer
;
4098 GLboolean AMD_vertex_shader_viewport_index
;
4099 GLboolean ANDROID_extension_pack_es31a
;
4100 GLboolean APPLE_object_purgeable
;
4101 GLboolean ATI_meminfo
;
4102 GLboolean ATI_texture_compression_3dc
;
4103 GLboolean ATI_texture_mirror_once
;
4104 GLboolean ATI_texture_env_combine3
;
4105 GLboolean ATI_fragment_shader
;
4106 GLboolean ATI_separate_stencil
;
4107 GLboolean GREMEDY_string_marker
;
4108 GLboolean INTEL_conservative_rasterization
;
4109 GLboolean INTEL_performance_query
;
4110 GLboolean KHR_blend_equation_advanced
;
4111 GLboolean KHR_blend_equation_advanced_coherent
;
4112 GLboolean KHR_robustness
;
4113 GLboolean KHR_texture_compression_astc_hdr
;
4114 GLboolean KHR_texture_compression_astc_ldr
;
4115 GLboolean KHR_texture_compression_astc_sliced_3d
;
4116 GLboolean MESA_pack_invert
;
4117 GLboolean MESA_shader_framebuffer_fetch
;
4118 GLboolean MESA_shader_framebuffer_fetch_non_coherent
;
4119 GLboolean MESA_shader_integer_functions
;
4120 GLboolean MESA_ycbcr_texture
;
4121 GLboolean NV_conditional_render
;
4122 GLboolean NV_fill_rectangle
;
4123 GLboolean NV_fog_distance
;
4124 GLboolean NV_point_sprite
;
4125 GLboolean NV_primitive_restart
;
4126 GLboolean NV_texture_barrier
;
4127 GLboolean NV_texture_env_combine4
;
4128 GLboolean NV_texture_rectangle
;
4129 GLboolean NV_vdpau_interop
;
4130 GLboolean NVX_gpu_memory_info
;
4131 GLboolean TDFX_texture_compression_FXT1
;
4132 GLboolean OES_EGL_image
;
4133 GLboolean OES_draw_texture
;
4134 GLboolean OES_depth_texture_cube_map
;
4135 GLboolean OES_EGL_image_external
;
4136 GLboolean OES_texture_float
;
4137 GLboolean OES_texture_float_linear
;
4138 GLboolean OES_texture_half_float
;
4139 GLboolean OES_texture_half_float_linear
;
4140 GLboolean OES_compressed_ETC1_RGB8_texture
;
4141 GLboolean OES_geometry_shader
;
4142 GLboolean OES_texture_compression_astc
;
4143 GLboolean extension_sentinel
;
4144 /** The extension string */
4145 const GLubyte
*String
;
4146 /** Number of supported extensions */
4149 * The context version which extension helper functions compare against.
4150 * By default, the value is equal to ctx->Version. This changes to ~0
4151 * while meta is in progress.
4158 * A stack of matrices (projection, modelview, color, texture, etc).
4160 struct gl_matrix_stack
4162 GLmatrix
*Top
; /**< points into Stack */
4163 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
4164 unsigned StackSize
; /**< Number of elements in Stack */
4165 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
4166 GLuint MaxDepth
; /**< size of Stack[] array */
4167 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
4172 * \name Bits for image transfer operations
4173 * \sa __struct gl_contextRec::ImageTransferState.
4176 #define IMAGE_SCALE_BIAS_BIT 0x1
4177 #define IMAGE_SHIFT_OFFSET_BIT 0x2
4178 #define IMAGE_MAP_COLOR_BIT 0x4
4179 #define IMAGE_CLAMP_BIT 0x800
4182 /** Pixel Transfer ops */
4183 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4184 IMAGE_SHIFT_OFFSET_BIT | \
4185 IMAGE_MAP_COLOR_BIT)
4188 * \name Bits to indicate what state has changed.
4191 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4192 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4193 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4194 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4195 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4196 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4197 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4198 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4199 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4200 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4201 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4202 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4203 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4204 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4205 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4206 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4207 #define _NEW_TEXTURE_OBJECT (1u << 16) /**< gl_context::Texture (bindings only) */
4208 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4209 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4210 #define _NEW_TEXTURE_STATE (1u << 19) /**< gl_context::Texture (states only) */
4211 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4212 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4213 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4214 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4215 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4216 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4217 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4218 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4219 #define _NEW_BUFFER_OBJECT (1u << 28)
4220 #define _NEW_FRAG_CLAMP (1u << 29)
4221 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4222 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4228 * Composite state flags
4231 #define _NEW_TEXTURE (_NEW_TEXTURE_OBJECT | _NEW_TEXTURE_STATE)
4233 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4234 _NEW_TEXTURE_STATE | \
4239 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4249 /* This has to be included here. */
4254 * Display list flags.
4255 * Strictly this is a tnl-private concept, but it doesn't seem
4256 * worthwhile adding a tnl private structure just to hold this one bit
4259 #define DLIST_DANGLING_REFS 0x1
4262 /** Opaque declaration of display list payload data type */
4263 union gl_dlist_node
;
4267 * Provide a location where information about a display list can be
4268 * collected. Could be extended with driverPrivate structures,
4269 * etc. in the future.
4271 struct gl_display_list
4274 GLchar
*Label
; /**< GL_KHR_debug */
4275 GLbitfield Flags
; /**< DLIST_x flags */
4276 /** The dlist commands are in a linked list of nodes */
4277 union gl_dlist_node
*Head
;
4282 * State used during display list compilation and execution.
4284 struct gl_dlist_state
4286 GLuint CallDepth
; /**< Current recursion calling depth */
4288 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4289 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4290 GLuint CurrentPos
; /**< Index into current block of nodes */
4292 GLvertexformat ListVtxfmt
;
4294 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4295 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4297 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4298 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4301 /* State known to have been set by the currently-compiling display
4302 * list. Used to eliminate some redundant state changes.
4310 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4311 * to small enums suitable for use as an array index.
4314 enum mesa_debug_source
{
4315 MESA_DEBUG_SOURCE_API
,
4316 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4317 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4318 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4319 MESA_DEBUG_SOURCE_APPLICATION
,
4320 MESA_DEBUG_SOURCE_OTHER
,
4321 MESA_DEBUG_SOURCE_COUNT
4324 enum mesa_debug_type
{
4325 MESA_DEBUG_TYPE_ERROR
,
4326 MESA_DEBUG_TYPE_DEPRECATED
,
4327 MESA_DEBUG_TYPE_UNDEFINED
,
4328 MESA_DEBUG_TYPE_PORTABILITY
,
4329 MESA_DEBUG_TYPE_PERFORMANCE
,
4330 MESA_DEBUG_TYPE_OTHER
,
4331 MESA_DEBUG_TYPE_MARKER
,
4332 MESA_DEBUG_TYPE_PUSH_GROUP
,
4333 MESA_DEBUG_TYPE_POP_GROUP
,
4334 MESA_DEBUG_TYPE_COUNT
4337 enum mesa_debug_severity
{
4338 MESA_DEBUG_SEVERITY_LOW
,
4339 MESA_DEBUG_SEVERITY_MEDIUM
,
4340 MESA_DEBUG_SEVERITY_HIGH
,
4341 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4342 MESA_DEBUG_SEVERITY_COUNT
4348 * Driver-specific state flags.
4350 * These are or'd with gl_context::NewDriverState to notify a driver about
4351 * a state change. The driver sets the flags at context creation and
4352 * the meaning of the bits set is opaque to core Mesa.
4354 struct gl_driver_flags
4356 /** gl_context::Array::_DrawArrays (vertex array state) */
4359 /** gl_context::TransformFeedback::CurrentObject */
4360 uint64_t NewTransformFeedback
;
4362 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4363 uint64_t NewTransformFeedbackProg
;
4365 /** gl_context::RasterDiscard */
4366 uint64_t NewRasterizerDiscard
;
4369 * gl_context::UniformBufferBindings
4370 * gl_shader_program::UniformBlocks
4372 uint64_t NewUniformBuffer
;
4375 * gl_context::ShaderStorageBufferBindings
4376 * gl_shader_program::ShaderStorageBlocks
4378 uint64_t NewShaderStorageBuffer
;
4380 uint64_t NewTextureBuffer
;
4383 * gl_context::AtomicBufferBindings
4385 uint64_t NewAtomicBuffer
;
4388 * gl_context::ImageUnits
4390 uint64_t NewImageUnits
;
4393 * gl_context::TessCtrlProgram::patch_default_*
4395 uint64_t NewDefaultTessLevels
;
4398 * gl_context::IntelConservativeRasterization
4400 uint64_t NewIntelConservativeRasterization
;
4403 * gl_context::Scissor::WindowRects
4405 uint64_t NewWindowRectangles
;
4407 /** gl_context::Color::sRGBEnabled */
4408 uint64_t NewFramebufferSRGB
;
4410 /** gl_context::Scissor::EnableFlags */
4411 uint64_t NewScissorTest
;
4413 /** gl_context::Scissor::ScissorArray */
4414 uint64_t NewScissorRect
;
4417 struct gl_uniform_buffer_binding
4419 struct gl_buffer_object
*BufferObject
;
4420 /** Start of uniform block data in the buffer */
4422 /** Size of data allowed to be referenced from the buffer (in bytes) */
4425 * glBindBufferBase() indicates that the Size should be ignored and only
4426 * limited by the current size of the BufferObject.
4428 GLboolean AutomaticSize
;
4431 struct gl_shader_storage_buffer_binding
4433 struct gl_buffer_object
*BufferObject
;
4434 /** Start of shader storage block data in the buffer */
4436 /** Size of data allowed to be referenced from the buffer (in bytes) */
4439 * glBindBufferBase() indicates that the Size should be ignored and only
4440 * limited by the current size of the BufferObject.
4442 GLboolean AutomaticSize
;
4446 * ARB_shader_image_load_store image unit.
4448 struct gl_image_unit
4451 * Texture object bound to this unit.
4453 struct gl_texture_object
*TexObj
;
4456 * Level of the texture object bound to this unit.
4461 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4462 * GL_FALSE if only some specific layer of the texture is bound.
4468 * Layer of the texture object bound to this unit as specified by the
4474 * Layer of the texture object bound to this unit, or zero if the
4475 * whole level is bound.
4480 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4481 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4486 * GL internal format that determines the interpretation of the
4487 * image memory when shader image operations are performed through
4493 * Mesa format corresponding to \c Format.
4495 mesa_format _ActualFormat
;
4500 * Binding point for an atomic counter buffer object.
4502 struct gl_atomic_buffer_binding
4504 struct gl_buffer_object
*BufferObject
;
4510 * Shader subroutines storage
4512 struct gl_subroutine_index_binding
4519 * Mesa rendering context.
4521 * This is the central context data structure for Mesa. Almost all
4522 * OpenGL state is contained in this structure.
4523 * Think of this as a base class from which device drivers will derive
4528 /** State possibly shared with other contexts in the address space */
4529 struct gl_shared_state
*Shared
;
4531 /** \name API function pointer tables */
4536 * The current dispatch table for non-displaylist-saving execution, either
4537 * BeginEnd or OutsideBeginEnd
4539 struct _glapi_table
*Exec
;
4541 * The normal dispatch table for non-displaylist-saving, non-begin/end
4543 struct _glapi_table
*OutsideBeginEnd
;
4544 /** The dispatch table used between glNewList() and glEndList() */
4545 struct _glapi_table
*Save
;
4547 * The dispatch table used between glBegin() and glEnd() (outside of a
4548 * display list). Only valid functions between those two are set, which is
4549 * mostly just the set in a GLvertexformat struct.
4551 struct _glapi_table
*BeginEnd
;
4553 * Dispatch table for when a graphics reset has happened.
4555 struct _glapi_table
*ContextLost
;
4557 * Dispatch table used to marshal API calls from the client program to a
4558 * separate server thread. NULL if API calls are not being marshalled to
4561 struct _glapi_table
*MarshalExec
;
4563 * Dispatch table currently in use for fielding API calls from the client
4564 * program. If API calls are being marshalled to another thread, this ==
4565 * MarshalExec. Otherwise it == CurrentServerDispatch.
4567 struct _glapi_table
*CurrentClientDispatch
;
4570 * Dispatch table currently in use for performing API calls. == Save or
4573 struct _glapi_table
*CurrentServerDispatch
;
4577 struct glthread_state
*GLThread
;
4579 struct gl_config Visual
;
4580 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4581 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4582 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4583 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4586 * Device driver function pointer table
4588 struct dd_function_table Driver
;
4590 /** Core/Driver constants */
4591 struct gl_constants Const
;
4593 /** \name The various 4x4 matrix stacks */
4595 struct gl_matrix_stack ModelviewMatrixStack
;
4596 struct gl_matrix_stack ProjectionMatrixStack
;
4597 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4598 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4599 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4602 /** Combined modelview and projection matrix */
4603 GLmatrix _ModelProjectMatrix
;
4605 /** \name Display lists */
4606 struct gl_dlist_state ListState
;
4608 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4609 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4611 /** Extension information */
4612 struct gl_extensions Extensions
;
4614 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4616 char *VersionString
;
4618 /** \name State attribute stack (for glPush/PopAttrib) */
4620 GLuint AttribStackDepth
;
4621 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4624 /** \name Renderer attribute groups
4626 * We define a struct for each attribute group to make pushing and popping
4627 * attributes easy. Also it's a good organization.
4630 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4631 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4632 struct gl_current_attrib Current
; /**< Current attributes */
4633 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4634 struct gl_eval_attrib Eval
; /**< Eval attributes */
4635 struct gl_fog_attrib Fog
; /**< Fog attributes */
4636 struct gl_hint_attrib Hint
; /**< Hint attributes */
4637 struct gl_light_attrib Light
; /**< Light attributes */
4638 struct gl_line_attrib Line
; /**< Line attributes */
4639 struct gl_list_attrib List
; /**< List attributes */
4640 struct gl_multisample_attrib Multisample
;
4641 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4642 struct gl_point_attrib Point
; /**< Point attributes */
4643 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4644 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4645 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4646 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4647 struct gl_texture_attrib Texture
; /**< Texture attributes */
4648 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4649 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4652 /** \name Client attribute stack */
4654 GLuint ClientAttribStackDepth
;
4655 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4658 /** \name Client attribute groups */
4660 struct gl_array_attrib Array
; /**< Vertex arrays */
4661 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4662 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4663 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4666 /** \name Other assorted state (not pushed/popped on attribute stack) */
4668 struct gl_pixelmaps PixelMaps
;
4670 struct gl_evaluators EvalMap
; /**< All evaluators */
4671 struct gl_feedback Feedback
; /**< Feedback */
4672 struct gl_selection Select
; /**< Selection */
4674 struct gl_program_state Program
; /**< general program state */
4675 struct gl_vertex_program_state VertexProgram
;
4676 struct gl_fragment_program_state FragmentProgram
;
4677 struct gl_geometry_program_state GeometryProgram
;
4678 struct gl_compute_program_state ComputeProgram
;
4679 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4680 struct gl_tess_eval_program_state TessEvalProgram
;
4681 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4683 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4684 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4687 * Current active shader pipeline state
4689 * Almost all internal users want ::_Shader instead of ::Shader. The
4690 * exceptions are bits of legacy GLSL API that do not know about separate
4693 * If a program is active via \c glUseProgram, this will point to
4696 * If a program pipeline is active via \c glBindProgramPipeline, this will
4697 * point to \c ::Pipeline.Current.
4699 * If neither a program nor a program pipeline is active, this will point to
4700 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4703 struct gl_pipeline_object
*_Shader
;
4705 struct gl_query_state Query
; /**< occlusion, timer queries */
4707 struct gl_transform_feedback_state TransformFeedback
;
4709 struct gl_perf_monitor_state PerfMonitor
;
4710 struct gl_perf_query_state PerfQuery
;
4712 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4713 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4714 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4716 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4717 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4719 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4722 * Current GL_ARB_uniform_buffer_object binding referenced by
4723 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4725 struct gl_buffer_object
*UniformBuffer
;
4728 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4729 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4731 struct gl_buffer_object
*ShaderStorageBuffer
;
4734 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4735 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4736 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4739 struct gl_uniform_buffer_binding
4740 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4743 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4744 * and GL 4.3. This is set up using glBindBufferRange() or
4745 * glBindBufferBase(). They are associated with shader storage blocks by
4746 * glShaderStorageBlockBinding()'s state in the shader program.
4748 struct gl_shader_storage_buffer_binding
4749 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4752 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4755 struct gl_buffer_object
*AtomicBuffer
;
4758 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4761 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4764 * Array of atomic counter buffer binding points.
4766 struct gl_atomic_buffer_binding
4767 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4770 * Array of image units for ARB_shader_image_load_store.
4772 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4774 struct gl_subroutine_index_binding SubroutineIndex
[MESA_SHADER_STAGES
];
4777 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4779 /* GL_EXT_framebuffer_object */
4780 struct gl_renderbuffer
*CurrentRenderbuffer
;
4782 GLenum ErrorValue
; /**< Last error code */
4785 * Recognize and silence repeated error debug messages in buggy apps.
4787 const char *ErrorDebugFmtString
;
4788 GLuint ErrorDebugCount
;
4790 /* GL_ARB_debug_output/GL_KHR_debug */
4792 struct gl_debug_state
*Debug
;
4794 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4795 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4796 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4798 struct gl_driver_flags DriverFlags
;
4800 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4802 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4804 /** \name Derived state */
4805 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4806 GLfloat _EyeZDir
[3];
4807 GLfloat _ModelViewInvScale
;
4808 GLboolean _NeedEyeCoords
;
4809 GLboolean _ForceEyeCoords
;
4811 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4813 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4815 /** \name For debugging/development only */
4817 GLboolean FirstTimeCurrent
;
4821 * False if this context was created without a config. This is needed
4822 * because the initial state of glDrawBuffers depends on this
4824 GLboolean HasConfig
;
4826 /** software compression/decompression supported or not */
4827 GLboolean Mesa_DXTn
;
4829 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4831 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4832 GLboolean IntelConservativeRasterization
; /**< GL_INTEL_CONSERVATIVE_RASTERIZATION */
4835 * \name Hooks for module contexts.
4837 * These will eventually live in the driver or elsewhere.
4840 void *swrast_context
;
4841 void *swsetup_context
;
4842 void *swtnl_context
;
4843 struct vbo_context
*vbo_context
;
4844 struct st_context
*st
;
4849 * \name NV_vdpau_interop
4852 const void *vdpDevice
;
4853 const void *vdpGetProcAddress
;
4854 struct set
*vdpSurfaces
;
4858 * Has this context observed a GPU reset in any context in the share group?
4860 * Once this field becomes true, it is never reset to false.
4862 GLboolean ShareGroupReset
;
4865 * \name OES_primitive_bounding_box
4867 * Stores the arguments to glPrimitiveBoundingBox
4869 GLfloat PrimitiveBoundingBox
[8];
4871 struct disk_cache
*Cache
;
4875 * Information about memory usage. All sizes are in kilobytes.
4877 struct gl_memory_info
4879 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4880 unsigned avail_device_memory
; /**< free device memory at the moment */
4881 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4882 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4883 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4884 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4888 extern int MESA_VERBOSE
;
4889 extern int MESA_DEBUG_FLAGS
;
4890 # define MESA_FUNCTION __func__
4892 # define MESA_VERBOSE 0
4893 # define MESA_DEBUG_FLAGS 0
4894 # define MESA_FUNCTION "a function"
4898 /** The MESA_VERBOSE var is a bitmask of these flags */
4901 VERBOSE_VARRAY
= 0x0001,
4902 VERBOSE_TEXTURE
= 0x0002,
4903 VERBOSE_MATERIAL
= 0x0004,
4904 VERBOSE_PIPELINE
= 0x0008,
4905 VERBOSE_DRIVER
= 0x0010,
4906 VERBOSE_STATE
= 0x0020,
4907 VERBOSE_API
= 0x0040,
4908 VERBOSE_DISPLAY_LIST
= 0x0100,
4909 VERBOSE_LIGHTING
= 0x0200,
4910 VERBOSE_PRIMS
= 0x0400,
4911 VERBOSE_VERTS
= 0x0800,
4912 VERBOSE_DISASSEM
= 0x1000,
4913 VERBOSE_DRAW
= 0x2000,
4914 VERBOSE_SWAPBUFFERS
= 0x4000
4918 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4921 DEBUG_SILENT
= (1 << 0),
4922 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4923 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4924 DEBUG_INCOMPLETE_FBO
= (1 << 3),
4925 DEBUG_CONTEXT
= (1 << 4)
4932 #endif /* MTYPES_H */