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 "glsl/shader_enums.h"
46 #include "main/formats.h" /* MESA_FORMAT_COUNT */
55 * \name 64-bit extension of GLbitfield.
58 typedef GLuint64 GLbitfield64
;
60 /** Set a single bit */
61 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
62 /** Set all bits up to excluding bit b */
63 #define BITFIELD64_MASK(b) \
64 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
65 /** Set count bits starting from bit b */
66 #define BITFIELD64_RANGE(b, count) \
67 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
71 * \name Some forward type declarations
74 struct _mesa_HashTable
;
75 struct gl_attrib_node
;
76 struct gl_list_extensions
;
78 struct gl_program_cache
;
79 struct gl_texture_object
;
80 struct gl_debug_state
;
83 struct gl_uniform_storage
;
84 struct prog_instruction
;
85 struct gl_program_parameter_list
;
92 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
93 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
94 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
95 #define PRIM_UNKNOWN (PRIM_MAX + 2)
100 * Determine if the given gl_varying_slot appears in the fragment shader.
102 static inline GLboolean
103 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
106 case VARYING_SLOT_PSIZ
:
107 case VARYING_SLOT_BFC0
:
108 case VARYING_SLOT_BFC1
:
109 case VARYING_SLOT_EDGE
:
110 case VARYING_SLOT_CLIP_VERTEX
:
111 case VARYING_SLOT_LAYER
:
120 * Indexes for all renderbuffers
124 /* the four standard color buffers */
132 /* optional aux buffer */
134 /* generic renderbuffers */
147 * Bit flags for all renderbuffers
149 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
150 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
151 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
152 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
153 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
154 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
155 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
156 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
157 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
158 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
159 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
160 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
161 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
162 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
163 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
164 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
165 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
166 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
167 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
170 * Mask of all the color buffer bits (but not accum).
172 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
173 BUFFER_BIT_BACK_LEFT | \
174 BUFFER_BIT_FRONT_RIGHT | \
175 BUFFER_BIT_BACK_RIGHT | \
177 BUFFER_BIT_COLOR0 | \
178 BUFFER_BIT_COLOR1 | \
179 BUFFER_BIT_COLOR2 | \
180 BUFFER_BIT_COLOR3 | \
181 BUFFER_BIT_COLOR4 | \
182 BUFFER_BIT_COLOR5 | \
183 BUFFER_BIT_COLOR6 | \
187 * Framebuffer configuration (aka visual / pixelformat)
188 * Note: some of these fields should be boolean, but it appears that
189 * code in drivers/dri/common/util.c requires int-sized fields.
195 GLuint doubleBufferMode
;
198 GLboolean haveAccumBuffer
;
199 GLboolean haveDepthBuffer
;
200 GLboolean haveStencilBuffer
;
202 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
203 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
204 GLint rgbBits
; /* total bits for rgb */
205 GLint indexBits
; /* total bits for colorindex */
207 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
215 /* EXT_visual_rating / GLX 1.2 */
218 /* EXT_visual_info / GLX 1.2 */
219 GLint transparentPixel
;
220 /* colors are floats scaled to ints */
221 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
222 GLint transparentIndex
;
224 /* ARB_multisample / SGIS_multisample */
228 /* SGIX_pbuffer / GLX 1.3 */
229 GLint maxPbufferWidth
;
230 GLint maxPbufferHeight
;
231 GLint maxPbufferPixels
;
232 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
233 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
235 /* OML_swap_method */
238 /* EXT_texture_from_pixmap */
239 GLint bindToTextureRgb
;
240 GLint bindToTextureRgba
;
241 GLint bindToMipmapTexture
;
242 GLint bindToTextureTargets
;
245 /* EXT_framebuffer_sRGB */
251 * \name Bit flags used for updating material values.
254 #define MAT_ATTRIB_FRONT_AMBIENT 0
255 #define MAT_ATTRIB_BACK_AMBIENT 1
256 #define MAT_ATTRIB_FRONT_DIFFUSE 2
257 #define MAT_ATTRIB_BACK_DIFFUSE 3
258 #define MAT_ATTRIB_FRONT_SPECULAR 4
259 #define MAT_ATTRIB_BACK_SPECULAR 5
260 #define MAT_ATTRIB_FRONT_EMISSION 6
261 #define MAT_ATTRIB_BACK_EMISSION 7
262 #define MAT_ATTRIB_FRONT_SHININESS 8
263 #define MAT_ATTRIB_BACK_SHININESS 9
264 #define MAT_ATTRIB_FRONT_INDEXES 10
265 #define MAT_ATTRIB_BACK_INDEXES 11
266 #define MAT_ATTRIB_MAX 12
268 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
269 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
270 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
271 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
272 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
273 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
275 #define MAT_INDEX_AMBIENT 0
276 #define MAT_INDEX_DIFFUSE 1
277 #define MAT_INDEX_SPECULAR 2
279 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
280 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
281 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
282 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
283 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
284 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
285 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
286 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
287 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
288 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
289 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
290 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
293 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
294 MAT_BIT_FRONT_AMBIENT | \
295 MAT_BIT_FRONT_DIFFUSE | \
296 MAT_BIT_FRONT_SPECULAR | \
297 MAT_BIT_FRONT_SHININESS | \
298 MAT_BIT_FRONT_INDEXES)
300 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
301 MAT_BIT_BACK_AMBIENT | \
302 MAT_BIT_BACK_DIFFUSE | \
303 MAT_BIT_BACK_SPECULAR | \
304 MAT_BIT_BACK_SHININESS | \
305 MAT_BIT_BACK_INDEXES)
307 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
316 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
324 #define LIGHT_SPOT 0x1
325 #define LIGHT_LOCAL_VIEWER 0x2
326 #define LIGHT_POSITIONAL 0x4
327 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
332 * Light source state.
336 struct gl_light
*next
; /**< double linked list with sentinel */
337 struct gl_light
*prev
;
339 GLfloat Ambient
[4]; /**< ambient color */
340 GLfloat Diffuse
[4]; /**< diffuse color */
341 GLfloat Specular
[4]; /**< specular color */
342 GLfloat EyePosition
[4]; /**< position in eye coordinates */
343 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
344 GLfloat SpotExponent
;
345 GLfloat SpotCutoff
; /**< in degrees */
346 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
347 GLfloat ConstantAttenuation
;
348 GLfloat LinearAttenuation
;
349 GLfloat QuadraticAttenuation
;
350 GLboolean Enabled
; /**< On/off flag */
353 * \name Derived fields
356 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
358 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
359 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
360 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
361 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
362 GLfloat _VP_inf_spot_attenuation
;
364 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
365 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
366 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
376 GLfloat Ambient
[4]; /**< ambient color */
377 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
378 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
379 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
380 * or GL_SEPARATE_SPECULAR_COLOR */
385 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
387 struct gl_accum_attrib
389 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
394 * Used for storing clear color, texture border color, etc.
395 * The float values are typically unclamped.
406 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
408 struct gl_colorbuffer_attrib
410 GLuint ClearIndex
; /**< Index for glClear */
411 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
412 GLuint IndexMask
; /**< Color index write mask */
413 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
415 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
418 * \name alpha testing
421 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
422 GLenum AlphaFunc
; /**< Alpha test function */
423 GLfloat AlphaRefUnclamped
;
424 GLclampf AlphaRef
; /**< Alpha reference value */
431 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
433 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
434 * control, only on the fixed-pointness of the render target.
435 * The query does however depend on fragment color clamping.
437 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
438 GLfloat BlendColor
[4]; /**< Blending color */
442 GLenum SrcRGB
; /**< RGB blend source term */
443 GLenum DstRGB
; /**< RGB blend dest term */
444 GLenum SrcA
; /**< Alpha blend source term */
445 GLenum DstA
; /**< Alpha blend dest term */
446 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
447 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
449 * Set if any blend factor uses SRC1. Computed at the time blend factors
452 GLboolean _UsesDualSrc
;
453 } Blend
[MAX_DRAW_BUFFERS
];
454 /** Are the blend func terms currently different for each buffer/target? */
455 GLboolean _BlendFuncPerBuffer
;
456 /** Are the blend equations currently different for each buffer/target? */
457 GLboolean _BlendEquationPerBuffer
;
464 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
465 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
466 GLenum LogicOp
; /**< Logic operator */
470 GLboolean DitherFlag
; /**< Dither enable flag */
472 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
473 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
474 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
476 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
481 * Current attribute group (GL_CURRENT_BIT).
483 struct gl_current_attrib
486 * \name Current vertex attributes.
487 * \note Values are valid only after FLUSH_VERTICES has been called.
488 * \note Index and Edgeflag current values are stored as floats in the
489 * SIX and SEVEN attribute slots.
491 /* we need double storage for this for vertex attrib 64bit */
492 GLfloat Attrib
[VERT_ATTRIB_MAX
][4*2]; /**< Position, color, texcoords, etc */
495 * \name Current raster position attributes (always valid).
496 * \note This set of attributes is very similar to the SWvertex struct.
499 GLfloat RasterPos
[4];
500 GLfloat RasterDistance
;
501 GLfloat RasterColor
[4];
502 GLfloat RasterSecondaryColor
[4];
503 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
504 GLboolean RasterPosValid
;
510 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
512 struct gl_depthbuffer_attrib
514 GLenum Func
; /**< Function for depth buffer compare */
515 GLclampd Clear
; /**< Value to clear depth buffer to */
516 GLboolean Test
; /**< Depth buffering enabled flag */
517 GLboolean Mask
; /**< Depth buffer writable? */
518 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
519 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
524 * Evaluator attribute group (GL_EVAL_BIT).
526 struct gl_eval_attrib
532 GLboolean Map1Color4
;
534 GLboolean Map1Normal
;
535 GLboolean Map1TextureCoord1
;
536 GLboolean Map1TextureCoord2
;
537 GLboolean Map1TextureCoord3
;
538 GLboolean Map1TextureCoord4
;
539 GLboolean Map1Vertex3
;
540 GLboolean Map1Vertex4
;
541 GLboolean Map2Color4
;
543 GLboolean Map2Normal
;
544 GLboolean Map2TextureCoord1
;
545 GLboolean Map2TextureCoord2
;
546 GLboolean Map2TextureCoord3
;
547 GLboolean Map2TextureCoord4
;
548 GLboolean Map2Vertex3
;
549 GLboolean Map2Vertex4
;
550 GLboolean AutoNormal
;
554 * \name Map Grid endpoints and divisions and calculated du values
558 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
559 GLint MapGrid2un
, MapGrid2vn
;
560 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
561 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
567 * Fog attribute group (GL_FOG_BIT).
571 GLboolean Enabled
; /**< Fog enabled flag */
572 GLboolean ColorSumEnabled
;
573 GLfloat ColorUnclamped
[4]; /**< Fog color */
574 GLfloat Color
[4]; /**< Fog color */
575 GLfloat Density
; /**< Density >= 0.0 */
576 GLfloat Start
; /**< Start distance in eye coords */
577 GLfloat End
; /**< End distance in eye coords */
578 GLfloat Index
; /**< Fog index */
579 GLenum Mode
; /**< Fog mode */
580 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
581 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
582 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
587 * Hint attribute group (GL_HINT_BIT).
589 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
591 struct gl_hint_attrib
593 GLenum PerspectiveCorrection
;
596 GLenum PolygonSmooth
;
598 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
599 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
600 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
605 * Lighting attribute group (GL_LIGHT_BIT).
607 struct gl_light_attrib
609 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
610 struct gl_lightmodel Model
; /**< Lighting model */
613 * Front and back material values.
614 * Note: must call FLUSH_VERTICES() before using.
616 struct gl_material Material
;
618 GLboolean Enabled
; /**< Lighting enabled flag */
619 GLboolean ColorMaterialEnabled
;
621 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
622 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
623 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
624 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
625 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
628 GLboolean _ClampVertexColor
;
629 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
632 * Derived state for optimizations:
635 GLboolean _NeedEyeCoords
;
636 GLboolean _NeedVertices
; /**< Use fast shader? */
637 struct gl_light EnabledList
; /**< List sentinel */
639 GLfloat _BaseColor
[2][3];
645 * Line attribute group (GL_LINE_BIT).
647 struct gl_line_attrib
649 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
650 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
651 GLushort StipplePattern
; /**< Stipple pattern */
652 GLint StippleFactor
; /**< Stipple repeat factor */
653 GLfloat Width
; /**< Line width */
658 * Display list attribute group (GL_LIST_BIT).
660 struct gl_list_attrib
667 * Multisample attribute group (GL_MULTISAMPLE_BIT).
669 struct gl_multisample_attrib
672 GLboolean _Enabled
; /**< true if Enabled and multisample buffer */
673 GLboolean SampleAlphaToCoverage
;
674 GLboolean SampleAlphaToOne
;
675 GLboolean SampleCoverage
;
676 GLboolean SampleCoverageInvert
;
677 GLboolean SampleShading
;
679 /* ARB_texture_multisample / GL3.2 additions */
680 GLboolean SampleMask
;
682 GLfloat SampleCoverageValue
;
683 GLfloat MinSampleShadingValue
;
685 /** The GL spec defines this as an array but >32x MSAA is madness */
686 GLbitfield SampleMaskValue
;
691 * A pixelmap (see glPixelMap)
696 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
701 * Collection of all pixelmaps
705 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
706 struct gl_pixelmap GtoG
;
707 struct gl_pixelmap BtoB
;
708 struct gl_pixelmap AtoA
;
709 struct gl_pixelmap ItoR
;
710 struct gl_pixelmap ItoG
;
711 struct gl_pixelmap ItoB
;
712 struct gl_pixelmap ItoA
;
713 struct gl_pixelmap ItoI
;
714 struct gl_pixelmap StoS
;
719 * Pixel attribute group (GL_PIXEL_MODE_BIT).
721 struct gl_pixel_attrib
723 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
725 /*--- Begin Pixel Transfer State ---*/
726 /* Fields are in the order in which they're applied... */
728 /** Scale & Bias (index shift, offset) */
730 GLfloat RedBias
, RedScale
;
731 GLfloat GreenBias
, GreenScale
;
732 GLfloat BlueBias
, BlueScale
;
733 GLfloat AlphaBias
, AlphaScale
;
734 GLfloat DepthBias
, DepthScale
;
735 GLint IndexShift
, IndexOffset
;
739 /* Note: actual pixel maps are not part of this attrib group */
740 GLboolean MapColorFlag
;
741 GLboolean MapStencilFlag
;
743 /*--- End Pixel Transfer State ---*/
746 GLfloat ZoomX
, ZoomY
;
751 * Point attribute group (GL_POINT_BIT).
753 struct gl_point_attrib
755 GLfloat Size
; /**< User-specified point size */
756 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
757 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
758 GLfloat Threshold
; /**< GL_EXT_point_parameters */
759 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
760 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
761 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
762 GLboolean CoordReplace
[MAX_TEXTURE_COORD_UNITS
]; /**< GL_ARB_point_sprite*/
763 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
764 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
769 * Polygon attribute group (GL_POLYGON_BIT).
771 struct gl_polygon_attrib
773 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
774 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
775 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
776 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
777 GLboolean CullFlag
; /**< Culling on/off flag */
778 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
779 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
780 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
781 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
782 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
783 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
784 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
785 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
786 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
791 * Scissor attributes (GL_SCISSOR_BIT).
793 struct gl_scissor_rect
795 GLint X
, Y
; /**< Lower left corner of box */
796 GLsizei Width
, Height
; /**< Size of box */
798 struct gl_scissor_attrib
800 GLbitfield EnableFlags
; /**< Scissor test enabled? */
801 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
806 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
808 * Three sets of stencil data are tracked so that OpenGL 2.0,
809 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
810 * simultaneously. In each of the stencil state arrays, element 0 corresponds
811 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
812 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
813 * GL_EXT_stencil_two_side GL_BACK state.
815 * The derived value \c _BackFace is either 1 or 2 depending on whether or
816 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
818 * The derived value \c _TestTwoSide is set when the front-face and back-face
819 * stencil state are different.
821 struct gl_stencil_attrib
823 GLboolean Enabled
; /**< Enabled flag */
824 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
825 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
826 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
827 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
828 GLboolean _TestTwoSide
;
829 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
830 GLenum Function
[3]; /**< Stencil function */
831 GLenum FailFunc
[3]; /**< Fail function */
832 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
833 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
834 GLint Ref
[3]; /**< Reference value */
835 GLuint ValueMask
[3]; /**< Value mask */
836 GLuint WriteMask
[3]; /**< Write mask */
837 GLuint Clear
; /**< Clear value */
842 * An index for each type of texture object. These correspond to the GL
843 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
844 * Note: the order is from highest priority to lowest priority.
848 TEXTURE_2D_MULTISAMPLE_INDEX
,
849 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
850 TEXTURE_CUBE_ARRAY_INDEX
,
851 TEXTURE_BUFFER_INDEX
,
852 TEXTURE_2D_ARRAY_INDEX
,
853 TEXTURE_1D_ARRAY_INDEX
,
854 TEXTURE_EXTERNAL_INDEX
,
865 * Bit flags for each type of texture object
868 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
869 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
870 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
871 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
872 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
873 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
874 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
875 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
876 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
877 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
878 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
879 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
884 * Texture image state. Drivers will typically create a subclass of this
885 * with extra fields for memory buffers, etc.
887 struct gl_texture_image
889 GLint InternalFormat
; /**< Internal format as given by the user */
890 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
891 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
892 * GL_INTENSITY, GL_DEPTH_COMPONENT or
893 * GL_DEPTH_STENCIL_EXT only. Used for
894 * choosing TexEnv arithmetic.
896 mesa_format TexFormat
; /**< The actual texture memory format */
898 GLuint Border
; /**< 0 or 1 */
899 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
900 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
901 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
902 GLuint Width2
; /**< = Width - 2*Border */
903 GLuint Height2
; /**< = Height - 2*Border */
904 GLuint Depth2
; /**< = Depth - 2*Border */
905 GLuint WidthLog2
; /**< = log2(Width2) */
906 GLuint HeightLog2
; /**< = log2(Height2) */
907 GLuint DepthLog2
; /**< = log2(Depth2) */
908 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
909 levels, computed from the dimensions */
911 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
912 GLuint Level
; /**< Which mipmap level am I? */
913 /** Cube map face: index into gl_texture_object::Image[] array */
916 /** GL_ARB_texture_multisample */
917 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
918 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
923 * Indexes for cube map faces.
938 * Sampler object state. These objects are new with GL_ARB_sampler_objects
939 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
941 struct gl_sampler_object
945 GLchar
*Label
; /**< GL_KHR_debug */
947 GLenum WrapS
; /**< S-axis texture image wrap mode */
948 GLenum WrapT
; /**< T-axis texture image wrap mode */
949 GLenum WrapR
; /**< R-axis texture image wrap mode */
950 GLenum MinFilter
; /**< minification filter */
951 GLenum MagFilter
; /**< magnification filter */
952 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
953 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
954 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
955 GLfloat LodBias
; /**< OpenGL 1.4 */
956 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
957 GLenum CompareMode
; /**< GL_ARB_shadow */
958 GLenum CompareFunc
; /**< GL_ARB_shadow */
959 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
960 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
965 * Texture object state. Contains the array of mipmap images, border color,
966 * wrap modes, filter modes, and shadow/texcompare state.
968 struct gl_texture_object
970 mtx_t Mutex
; /**< for thread safety */
971 GLint RefCount
; /**< reference count */
972 GLuint Name
; /**< the user-visible texture object ID */
973 GLchar
*Label
; /**< GL_KHR_debug */
974 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
975 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
976 Only valid when Target is valid. */
978 struct gl_sampler_object Sampler
;
980 GLenum DepthMode
; /**< GL_ARB_depth_texture */
981 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
983 GLfloat Priority
; /**< in [0,1] */
984 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
985 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
986 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
987 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
988 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
989 GLint CropRect
[4]; /**< GL_OES_draw_texture */
990 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
991 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
992 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
993 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
994 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
995 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
996 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
997 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
999 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1000 GLboolean _IsFloat
; /**< GL_OES_float_texture */
1001 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
1003 GLuint MinLevel
; /**< GL_ARB_texture_view */
1004 GLuint MinLayer
; /**< GL_ARB_texture_view */
1005 GLuint NumLevels
; /**< GL_ARB_texture_view */
1006 GLuint NumLayers
; /**< GL_ARB_texture_view */
1008 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1009 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1011 /** GL_ARB_texture_buffer_object */
1012 struct gl_buffer_object
*BufferObject
;
1013 GLenum BufferObjectFormat
;
1014 /** Equivalent Mesa format for BufferObjectFormat. */
1015 mesa_format _BufferObjectFormat
;
1016 /** GL_ARB_texture_buffer_range */
1017 GLintptr BufferOffset
;
1018 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1020 /** GL_OES_EGL_image_external */
1021 GLint RequiredTextureImageUnits
;
1023 /** GL_ARB_shader_image_load_store */
1024 GLenum ImageFormatCompatibilityType
;
1028 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1029 #define MAX_COMBINER_TERMS 4
1033 * Texture combine environment state.
1035 struct gl_tex_env_combine_state
1037 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1038 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1039 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1040 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1041 GLenum SourceA
[MAX_COMBINER_TERMS
];
1042 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1043 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1044 GLenum OperandA
[MAX_COMBINER_TERMS
];
1045 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1046 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1047 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1048 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1053 * TexGenEnabled flags.
1060 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1065 * Bit flag versions of the corresponding GL_ constants.
1068 #define TEXGEN_SPHERE_MAP 0x1
1069 #define TEXGEN_OBJ_LINEAR 0x2
1070 #define TEXGEN_EYE_LINEAR 0x4
1071 #define TEXGEN_REFLECTION_MAP_NV 0x8
1072 #define TEXGEN_NORMAL_MAP_NV 0x10
1074 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1075 TEXGEN_REFLECTION_MAP_NV | \
1076 TEXGEN_NORMAL_MAP_NV)
1077 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1078 TEXGEN_REFLECTION_MAP_NV | \
1079 TEXGEN_NORMAL_MAP_NV | \
1085 /** Tex-gen enabled for texture unit? */
1086 #define ENABLE_TEXGEN(unit) (1 << (unit))
1088 /** Non-identity texture matrix for texture unit? */
1089 #define ENABLE_TEXMAT(unit) (1 << (unit))
1093 * Texture coord generation state.
1097 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1098 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1099 GLfloat ObjectPlane
[4];
1100 GLfloat EyePlane
[4];
1105 * Texture unit state. Contains enable flags, texture environment/function/
1106 * combiners, texgen state, and pointers to current texture objects.
1108 struct gl_texture_unit
1110 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1112 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1113 GLclampf EnvColor
[4];
1114 GLfloat EnvColorUnclamped
[4];
1116 struct gl_texgen GenS
;
1117 struct gl_texgen GenT
;
1118 struct gl_texgen GenR
;
1119 struct gl_texgen GenQ
;
1120 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1121 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1123 GLfloat LodBias
; /**< for biasing mipmap levels */
1125 /** Texture targets that have a non-default texture bound */
1126 GLbitfield _BoundTextures
;
1128 /** Current sampler object (GL_ARB_sampler_objects) */
1129 struct gl_sampler_object
*Sampler
;
1132 * \name GL_EXT_texture_env_combine
1134 struct gl_tex_env_combine_state Combine
;
1137 * Derived state based on \c EnvMode and the \c BaseFormat of the
1138 * currently enabled texture.
1140 struct gl_tex_env_combine_state _EnvMode
;
1143 * Currently enabled combiner state. This will point to either
1144 * \c Combine or \c _EnvMode.
1146 struct gl_tex_env_combine_state
*_CurrentCombine
;
1148 /** Current texture object pointers */
1149 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1151 /** Points to highest priority, complete and enabled texture object */
1152 struct gl_texture_object
*_Current
;
1158 * Texture attribute group (GL_TEXTURE_BIT).
1160 struct gl_texture_attrib
1162 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1164 /** GL_ARB_seamless_cubemap */
1165 GLboolean CubeMapSeamless
;
1167 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1169 /** GL_ARB_texture_buffer_object */
1170 struct gl_buffer_object
*BufferObject
;
1172 /** Texture coord units/sets used for fragment texturing */
1173 GLbitfield _EnabledCoordUnits
;
1175 /** Texture coord units that have texgen enabled */
1176 GLbitfield _TexGenEnabled
;
1178 /** Texture coord units that have non-identity matrices */
1179 GLbitfield _TexMatEnabled
;
1181 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1182 GLbitfield _GenFlags
;
1184 /** Largest index of a texture unit with _Current != NULL. */
1185 GLint _MaxEnabledTexImageUnit
;
1187 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1188 GLint NumCurrentTexUsed
;
1190 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1195 * Data structure representing a single clip plane (e.g. one of the elements
1196 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1198 typedef GLfloat gl_clip_plane
[4];
1202 * Transformation attribute group (GL_TRANSFORM_BIT).
1204 struct gl_transform_attrib
1206 GLenum MatrixMode
; /**< Matrix mode */
1207 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1208 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1209 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1210 GLboolean Normalize
; /**< Normalize all normals? */
1211 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1212 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1213 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1214 /** GL_ARB_clip_control */
1215 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1216 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1221 * Viewport attribute group (GL_VIEWPORT_BIT).
1223 struct gl_viewport_attrib
1225 GLfloat X
, Y
; /**< position */
1226 GLfloat Width
, Height
; /**< size */
1227 GLdouble Near
, Far
; /**< Depth buffer range */
1236 } gl_map_buffer_index
;
1240 * Fields describing a mapped buffer range.
1242 struct gl_buffer_mapping
{
1243 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1244 GLvoid
*Pointer
; /**< User-space address of mapping */
1245 GLintptr Offset
; /**< Mapped offset */
1246 GLsizeiptr Length
; /**< Mapped length */
1251 * Usages we've seen for a buffer object.
1254 USAGE_UNIFORM_BUFFER
= 0x1,
1255 USAGE_TEXTURE_BUFFER
= 0x2,
1256 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1261 * GL_ARB_vertex/pixel_buffer_object buffer object
1263 struct gl_buffer_object
1268 GLchar
*Label
; /**< GL_KHR_debug */
1269 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1270 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1271 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1272 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1273 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1274 GLboolean Written
; /**< Ever written to? (for debugging) */
1275 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1276 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1277 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1279 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1284 * Client pixel packing/unpacking attributes
1286 struct gl_pixelstore_attrib
1294 GLboolean SwapBytes
;
1296 GLboolean Invert
; /**< GL_MESA_pack_invert */
1297 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1298 GLint CompressedBlockHeight
;
1299 GLint CompressedBlockDepth
;
1300 GLint CompressedBlockSize
;
1301 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1306 * Client vertex array attributes
1308 struct gl_client_array
1310 GLint Size
; /**< components per element (1,2,3,4) */
1311 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1312 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1313 GLsizei Stride
; /**< user-specified stride */
1314 GLsizei StrideB
; /**< actual stride in bytes */
1315 GLuint _ElementSize
; /**< size of each element in bytes */
1316 const GLubyte
*Ptr
; /**< Points to array data */
1317 GLboolean Enabled
; /**< Enabled flag is a boolean */
1318 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1319 GLboolean Integer
; /**< Integer-valued? */
1320 GLboolean Doubles
; /**< double precision values are not converted to floats */
1321 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1323 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1328 * Vertex attribute array as seen by the client.
1330 * Contains the size, type, format and normalization flag,
1331 * along with the index of a vertex buffer binding point.
1333 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1334 * and is only present for backwards compatibility reasons.
1335 * Rendering always uses VERTEX_BINDING_STRIDE.
1336 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1337 * and VERTEX_BINDING_STRIDE to the same value, while
1338 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1340 struct gl_vertex_attrib_array
1342 GLint Size
; /**< Components per element (1,2,3,4) */
1343 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1344 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1345 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1346 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1347 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1348 GLboolean Enabled
; /**< Whether the array is enabled */
1349 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1350 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1351 GLboolean Doubles
; /**< double precision values are not converted to floats */
1352 GLuint _ElementSize
; /**< Size of each element in bytes */
1353 GLuint VertexBinding
; /**< Vertex buffer binding */
1358 * This describes the buffer object used for a vertex array (or
1359 * multiple vertex arrays). If BufferObj points to the default/null
1360 * buffer object, then the vertex array lives in user memory and not a VBO.
1362 struct gl_vertex_buffer_binding
1364 GLintptr Offset
; /**< User-specified offset */
1365 GLsizei Stride
; /**< User-specified stride */
1366 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1367 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1368 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1373 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1374 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1377 struct gl_vertex_array_object
1379 /** Name of the VAO as received from glGenVertexArray. */
1384 GLchar
*Label
; /**< GL_KHR_debug */
1389 * Does the VAO use ARB semantics or Apple semantics?
1391 * There are several ways in which ARB_vertex_array_object and
1392 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1395 * - ARB VAOs require that all array data be sourced from vertex buffer
1396 * objects, but Apple VAOs do not.
1398 * - ARB VAOs require that names come from GenVertexArrays.
1400 * This flag notes which behavior governs this VAO.
1402 GLboolean ARBsemantics
;
1405 * Has this array object been bound?
1407 GLboolean EverBound
;
1410 * Derived vertex attribute arrays
1412 * This is a legacy data structure created from gl_vertex_attrib_array and
1413 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1415 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1417 /** Vertex attribute arrays */
1418 struct gl_vertex_attrib_array VertexAttrib
[VERT_ATTRIB_MAX
];
1420 /** Vertex buffer bindings */
1421 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1423 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1424 GLbitfield64 _Enabled
;
1426 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1427 GLbitfield64 NewArrays
;
1429 /** The index buffer (also known as the element array buffer in OpenGL). */
1430 struct gl_buffer_object
*IndexBufferObj
;
1434 /** Used to signal when transitioning from one kind of drawing method
1438 DRAW_NONE
, /**< Initial value only */
1445 * Enum for the OpenGL APIs we know about and may support.
1447 * NOTE: This must match the api_enum table in
1448 * src/mesa/main/get_hash_generator.py
1452 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1456 API_OPENGL_LAST
= API_OPENGL_CORE
1460 * Vertex array state
1462 struct gl_array_attrib
1464 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1465 struct gl_vertex_array_object
*VAO
;
1467 /** The default vertex array object */
1468 struct gl_vertex_array_object
*DefaultVAO
;
1470 /** The last VAO accessed by a DSA function */
1471 struct gl_vertex_array_object
*LastLookedUpVAO
;
1473 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1474 struct _mesa_HashTable
*Objects
;
1476 GLint ActiveTexture
; /**< Client Active Texture */
1477 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1478 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1481 * \name Primitive restart controls
1483 * Primitive restart is enabled if either \c PrimitiveRestart or
1484 * \c PrimitiveRestartFixedIndex is set.
1487 GLboolean PrimitiveRestart
;
1488 GLboolean PrimitiveRestartFixedIndex
;
1489 GLboolean _PrimitiveRestart
;
1490 GLuint RestartIndex
;
1493 /** One of the DRAW_xxx flags, not consumed by drivers */
1494 gl_draw_method DrawMethod
;
1496 /* GL_ARB_vertex_buffer_object */
1497 struct gl_buffer_object
*ArrayBufferObj
;
1500 * Vertex arrays as consumed by a driver.
1501 * The array pointer is set up only by the VBO module.
1503 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1505 /** Legal array datatypes and the API for which they have been computed */
1506 GLbitfield LegalTypesMask
;
1507 gl_api LegalTypesMaskAPI
;
1512 * Feedback buffer state
1517 GLbitfield _Mask
; /**< FB_* bits */
1525 * Selection buffer state
1529 GLuint
*Buffer
; /**< selection buffer */
1530 GLuint BufferSize
; /**< size of the selection buffer */
1531 GLuint BufferCount
; /**< number of values in the selection buffer */
1532 GLuint Hits
; /**< number of records in the selection buffer */
1533 GLuint NameStackDepth
; /**< name stack depth */
1534 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1535 GLboolean HitFlag
; /**< hit flag */
1536 GLfloat HitMinZ
; /**< minimum hit depth */
1537 GLfloat HitMaxZ
; /**< maximum hit depth */
1542 * 1-D Evaluator control points
1546 GLuint Order
; /**< Number of control points */
1547 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1548 GLfloat
*Points
; /**< Points to contiguous control points */
1553 * 2-D Evaluator control points
1557 GLuint Uorder
; /**< Number of control points in U dimension */
1558 GLuint Vorder
; /**< Number of control points in V dimension */
1561 GLfloat
*Points
; /**< Points to contiguous control points */
1566 * All evaluator control point state
1568 struct gl_evaluators
1574 struct gl_1d_map Map1Vertex3
;
1575 struct gl_1d_map Map1Vertex4
;
1576 struct gl_1d_map Map1Index
;
1577 struct gl_1d_map Map1Color4
;
1578 struct gl_1d_map Map1Normal
;
1579 struct gl_1d_map Map1Texture1
;
1580 struct gl_1d_map Map1Texture2
;
1581 struct gl_1d_map Map1Texture3
;
1582 struct gl_1d_map Map1Texture4
;
1589 struct gl_2d_map Map2Vertex3
;
1590 struct gl_2d_map Map2Vertex4
;
1591 struct gl_2d_map Map2Index
;
1592 struct gl_2d_map Map2Color4
;
1593 struct gl_2d_map Map2Normal
;
1594 struct gl_2d_map Map2Texture1
;
1595 struct gl_2d_map Map2Texture2
;
1596 struct gl_2d_map Map2Texture3
;
1597 struct gl_2d_map Map2Texture4
;
1602 struct gl_transform_feedback_varying_info
1611 * Per-output info vertex shaders for transform feedback.
1613 struct gl_transform_feedback_output
1615 unsigned OutputRegister
;
1616 unsigned OutputBuffer
;
1617 unsigned NumComponents
;
1620 /** offset (in DWORDs) of this output within the interleaved structure */
1624 * Offset into the output register of the data to output. For example,
1625 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1626 * offset is in the y and z components of the output register.
1628 unsigned ComponentOffset
;
1632 /** Post-link transform feedback info. */
1633 struct gl_transform_feedback_info
1635 unsigned NumOutputs
;
1638 * Number of transform feedback buffers in use by this program.
1640 unsigned NumBuffers
;
1642 struct gl_transform_feedback_output
*Outputs
;
1644 /** Transform feedback varyings used for the linking of this shader program.
1646 * Use for glGetTransformFeedbackVarying().
1648 struct gl_transform_feedback_varying_info
*Varyings
;
1652 * Total number of components stored in each buffer. This may be used by
1653 * hardware back-ends to determine the correct stride when interleaving
1654 * multiple transform feedback outputs in the same buffer.
1656 unsigned BufferStride
[MAX_FEEDBACK_BUFFERS
];
1661 * Transform feedback object state
1663 struct gl_transform_feedback_object
1665 GLuint Name
; /**< AKA the object ID */
1667 GLchar
*Label
; /**< GL_KHR_debug */
1668 GLboolean Active
; /**< Is transform feedback enabled? */
1669 GLboolean Paused
; /**< Is transform feedback paused? */
1670 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1672 GLboolean EverBound
; /**< Has this object been bound? */
1675 * GLES: if Active is true, remaining number of primitives which can be
1676 * rendered without overflow. This is necessary to track because GLES
1677 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1678 * glDrawArraysInstanced would overflow transform feedback buffers.
1679 * Undefined if Active is false.
1681 * Not tracked for desktop GL since it's unnecessary.
1683 unsigned GlesRemainingPrims
;
1686 * The shader program active when BeginTransformFeedback() was called.
1687 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1688 * where stage is the pipeline stage that is the source of data for
1689 * transform feedback.
1691 struct gl_shader_program
*shader_program
;
1693 /** The feedback buffers */
1694 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1695 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1697 /** Start of feedback data in dest buffer */
1698 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1701 * Max data to put into dest buffer (in bytes). Computed based on
1702 * RequestedSize and the actual size of the buffer.
1704 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1707 * Size that was specified when the buffer was bound. If the buffer was
1708 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1711 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1716 * Context state for transform feedback.
1718 struct gl_transform_feedback_state
1720 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1722 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1723 struct gl_buffer_object
*CurrentBuffer
;
1725 /** The table of all transform feedback objects */
1726 struct _mesa_HashTable
*Objects
;
1728 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1729 struct gl_transform_feedback_object
*CurrentObject
;
1731 /** The default xform-fb object (Name==0) */
1732 struct gl_transform_feedback_object
*DefaultObject
;
1737 * A "performance monitor" as described in AMD_performance_monitor.
1739 struct gl_perf_monitor_object
1743 /** True if the monitor is currently active (Begin called but not End). */
1747 * True if the monitor has ended.
1749 * This is distinct from !Active because it may never have began.
1754 * A list of groups with currently active counters.
1756 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1758 unsigned *ActiveGroups
;
1761 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1763 * Checking whether counter 'c' in group 'g' is active can be done via:
1765 * BITSET_TEST(ActiveCounters[g], c)
1767 GLuint
**ActiveCounters
;
1771 union gl_perf_monitor_counter_value
1779 struct gl_perf_monitor_counter
1781 /** Human readable name for the counter. */
1785 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1786 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1790 /** Minimum counter value. */
1791 union gl_perf_monitor_counter_value Minimum
;
1793 /** Maximum counter value. */
1794 union gl_perf_monitor_counter_value Maximum
;
1798 struct gl_perf_monitor_group
1800 /** Human readable name for the group. */
1804 * Maximum number of counters in this group which can be active at the
1807 GLuint MaxActiveCounters
;
1809 /** Array of counters within this group. */
1810 const struct gl_perf_monitor_counter
*Counters
;
1816 * Context state for AMD_performance_monitor.
1818 struct gl_perf_monitor_state
1820 /** Array of performance monitor groups (indexed by group ID) */
1821 const struct gl_perf_monitor_group
*Groups
;
1824 /** The table of all performance monitors. */
1825 struct _mesa_HashTable
*Monitors
;
1830 * Names of the various vertex/fragment program register files, etc.
1832 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1833 * All values should fit in a 4-bit field.
1835 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1836 * considered to be "uniform" variables since they can only be set outside
1837 * glBegin/End. They're also all stored in the same Parameters array.
1841 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1842 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1843 PROGRAM_INPUT
, /**< machine->Inputs[] */
1844 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1845 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1846 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1847 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1848 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1849 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1850 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1851 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1852 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1858 * \brief Layout qualifiers for gl_FragDepth.
1860 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
1861 * a layout qualifier.
1863 * \see enum ir_depth_layout
1865 enum gl_frag_depth_layout
1867 FRAG_DEPTH_LAYOUT_NONE
, /**< No layout is specified. */
1868 FRAG_DEPTH_LAYOUT_ANY
,
1869 FRAG_DEPTH_LAYOUT_GREATER
,
1870 FRAG_DEPTH_LAYOUT_LESS
,
1871 FRAG_DEPTH_LAYOUT_UNCHANGED
1876 * Base class for any kind of program object
1882 GLubyte
*String
; /**< Null-terminated program text */
1884 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1885 GLenum Format
; /**< String encoding format */
1887 struct prog_instruction
*Instructions
;
1889 struct nir_shader
*nir
;
1891 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1892 GLbitfield64 DoubleInputsRead
; /**< Bitmask of which input regs are read and are doubles */
1893 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1894 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1895 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1896 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1897 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1899 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
1902 * For vertex and geometry shaders, true if the program uses the
1903 * gl_ClipDistance output. Ignored for fragment shaders.
1905 GLboolean UsesClipDistanceOut
;
1908 /** Named parameters, constants, etc. from program text */
1909 struct gl_program_parameter_list
*Parameters
;
1912 * Local parameters used by the program.
1914 * It's dynamically allocated because it is rarely used (just
1915 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
1918 GLfloat (*LocalParams
)[4];
1920 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1921 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1923 /** Bitmask of which register files are read/written with indirect
1924 * addressing. Mask of (1 << PROGRAM_x) bits.
1926 GLbitfield IndirectRegisterFiles
;
1928 /** Logical counts */
1930 GLuint NumInstructions
;
1931 GLuint NumTemporaries
;
1932 GLuint NumParameters
;
1933 GLuint NumAttributes
;
1934 GLuint NumAddressRegs
;
1935 GLuint NumAluInstructions
;
1936 GLuint NumTexInstructions
;
1937 GLuint NumTexIndirections
;
1939 /** Native, actual h/w counts */
1941 GLuint NumNativeInstructions
;
1942 GLuint NumNativeTemporaries
;
1943 GLuint NumNativeParameters
;
1944 GLuint NumNativeAttributes
;
1945 GLuint NumNativeAddressRegs
;
1946 GLuint NumNativeAluInstructions
;
1947 GLuint NumNativeTexInstructions
;
1948 GLuint NumNativeTexIndirections
;
1953 /** Vertex program object */
1954 struct gl_vertex_program
1956 struct gl_program Base
; /**< base class */
1957 GLboolean IsPositionInvariant
;
1961 /** Geometry program object */
1962 struct gl_geometry_program
1964 struct gl_program Base
; /**< base class */
1969 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1970 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1971 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1972 bool UsesEndPrimitive
;
1977 /** Fragment program object */
1978 struct gl_fragment_program
1980 struct gl_program Base
; /**< base class */
1981 GLboolean UsesKill
; /**< shader uses KIL instruction */
1982 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
1983 GLboolean OriginUpperLeft
;
1984 GLboolean PixelCenterInteger
;
1985 enum gl_frag_depth_layout FragDepthLayout
;
1988 * GLSL interpolation qualifier associated with each fragment shader input.
1989 * For inputs that do not have an interpolation qualifier specified in
1990 * GLSL, the value is INTERP_QUALIFIER_NONE.
1992 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
1995 * Bitfield indicating, for each fragment shader input, 1 if that input
1996 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
1998 GLbitfield64 IsCentroid
;
2001 * Bitfield indicating, for each fragment shader input, 1 if that input
2002 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2004 GLbitfield64 IsSample
;
2008 /** Compute program object */
2009 struct gl_compute_program
2011 struct gl_program Base
; /**< base class */
2014 * Size specified using local_size_{x,y,z}.
2016 unsigned LocalSize
[3];
2021 * State common to vertex and fragment programs.
2023 struct gl_program_state
2025 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2026 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2031 * Context state for vertex programs.
2033 struct gl_vertex_program_state
2035 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2036 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2037 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2038 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2039 /** Computed two sided lighting for fixed function/programs. */
2040 GLboolean _TwoSideEnabled
;
2041 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2043 /** Currently enabled and valid vertex program (including internal
2044 * programs, user-defined vertex programs and GLSL vertex shaders).
2045 * This is the program we must use when rendering.
2047 struct gl_vertex_program
*_Current
;
2049 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2051 /** Should fixed-function T&L be implemented with a vertex prog? */
2052 GLboolean _MaintainTnlProgram
;
2054 /** Program to emulate fixed-function T&L (see above) */
2055 struct gl_vertex_program
*_TnlProgram
;
2057 /** Cache of fixed-function programs */
2058 struct gl_program_cache
*Cache
;
2060 GLboolean _Overriden
;
2065 * Context state for geometry programs.
2067 struct gl_geometry_program_state
2069 /** Currently enabled and valid program (including internal programs
2070 * and compiled shader programs).
2072 struct gl_geometry_program
*_Current
;
2076 * Context state for fragment programs.
2078 struct gl_fragment_program_state
2080 GLboolean Enabled
; /**< User-set fragment program enable flag */
2081 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2082 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2084 /** Currently enabled and valid fragment program (including internal
2085 * programs, user-defined fragment programs and GLSL fragment shaders).
2086 * This is the program we must use when rendering.
2088 struct gl_fragment_program
*_Current
;
2090 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2092 /** Should fixed-function texturing be implemented with a fragment prog? */
2093 GLboolean _MaintainTexEnvProgram
;
2095 /** Program to emulate fixed-function texture env/combine (see above) */
2096 struct gl_fragment_program
*_TexEnvProgram
;
2098 /** Cache of fixed-function programs */
2099 struct gl_program_cache
*Cache
;
2104 * Context state for compute programs.
2106 struct gl_compute_program_state
2108 /** Currently enabled and valid program (including internal programs
2109 * and compiled shader programs).
2111 struct gl_compute_program
*_Current
;
2116 * ATI_fragment_shader runtime state
2118 #define ATI_FS_INPUT_PRIMARY 0
2119 #define ATI_FS_INPUT_SECONDARY 1
2121 struct atifs_instruction
;
2122 struct atifs_setupinst
;
2125 * ATI fragment shader
2127 struct ati_fragment_shader
2131 struct atifs_instruction
*Instructions
[2];
2132 struct atifs_setupinst
*SetupInst
[2];
2133 GLfloat Constants
[8][4];
2134 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2135 GLubyte numArithInstr
[2];
2136 GLubyte regsAssigned
[2];
2137 GLubyte NumPasses
; /**< 1 or 2 */
2139 GLubyte last_optype
;
2140 GLboolean interpinp1
;
2146 * Context state for GL_ATI_fragment_shader
2148 struct gl_ati_fragment_shader_state
2151 GLboolean _Enabled
; /**< enabled and valid shader? */
2152 GLboolean Compiling
;
2153 GLfloat GlobalConstants
[8][4];
2154 struct ati_fragment_shader
*Current
;
2159 * A GLSL vertex or fragment shader object.
2163 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2164 * Must be the first field.
2167 gl_shader_stage Stage
;
2168 GLuint Name
; /**< AKA the handle */
2169 GLint RefCount
; /**< Reference count */
2170 GLchar
*Label
; /**< GL_KHR_debug */
2171 GLboolean DeletePending
;
2172 GLboolean CompileStatus
;
2173 bool IsES
; /**< True if this shader uses GLSL ES */
2175 GLuint SourceChecksum
; /**< for debug/logging purposes */
2176 const GLchar
*Source
; /**< Source code string */
2178 struct gl_program
*Program
; /**< Post-compile assembly code */
2181 unsigned Version
; /**< GLSL version used for linking */
2184 * \name Sampler tracking
2186 * \note Each of these fields is only set post-linking.
2189 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2190 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2191 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2195 * Map from sampler unit to texture unit (set by glUniform1i())
2197 * A sampler unit is associated with each sampler uniform by the linker.
2198 * The sampler unit associated with each uniform is stored in the
2199 * \c gl_uniform_storage::sampler field.
2201 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2202 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2203 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2206 * Number of default uniform block components used by this shader.
2208 * This field is only set post-linking.
2210 unsigned num_uniform_components
;
2213 * Number of combined uniform components used by this shader.
2215 * This field is only set post-linking. It is the sum of the uniform block
2216 * sizes divided by sizeof(float), and num_uniform_compoennts.
2218 unsigned num_combined_uniform_components
;
2221 * This shader's uniform block information.
2223 * These fields are only set post-linking.
2225 unsigned NumUniformBlocks
;
2226 struct gl_uniform_block
*UniformBlocks
;
2228 struct exec_list
*ir
;
2229 struct glsl_symbol_table
*symbols
;
2231 bool uses_builtin_functions
;
2232 bool uses_gl_fragcoord
;
2233 bool redeclares_gl_fragcoord
;
2234 bool ARB_fragment_coord_conventions_enable
;
2237 * Fragment shader state from GLSL 1.50 layout qualifiers.
2239 bool origin_upper_left
;
2240 bool pixel_center_integer
;
2243 * Geometry shader state from GLSL 1.50 layout qualifiers.
2248 * 0 - Invocations count not declared in shader, or
2249 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2253 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2254 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2259 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2260 * it's not set in this shader.
2266 * Map from image uniform index to image unit (set by glUniform1i())
2268 * An image uniform index is associated with each image uniform by
2269 * the linker. The image index associated with each uniform is
2270 * stored in the \c gl_uniform_storage::image field.
2272 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2275 * Access qualifier specified in the shader for each image uniform
2276 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2279 * It may be different, though only more strict than the value of
2280 * \c gl_image_unit::Access for the corresponding image unit.
2282 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2285 * Number of image uniforms defined in the shader. It specifies
2286 * the number of valid elements in the \c ImageUnits and \c
2287 * ImageAccess arrays above.
2292 * Whether early fragment tests are enabled as defined by
2293 * ARB_shader_image_load_store.
2295 bool EarlyFragmentTests
;
2298 * Compute shader state from ARB_compute_shader layout qualifiers.
2302 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2303 * it's not set in this shader.
2305 unsigned LocalSize
[3];
2310 struct gl_uniform_buffer_variable
2315 * Name of the uniform as seen by glGetUniformIndices.
2317 * glGetUniformIndices requires that the block instance index \b not be
2318 * present in the name of queried uniforms.
2321 * \c gl_uniform_buffer_variable::IndexName and
2322 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2326 const struct glsl_type
*Type
;
2327 unsigned int Offset
;
2332 enum gl_uniform_block_packing
2340 struct gl_uniform_block
2342 /** Declared name of the uniform block */
2345 /** Array of supplemental information about UBO ir_variables. */
2346 struct gl_uniform_buffer_variable
*Uniforms
;
2350 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2351 * with glBindBufferBase to bind a buffer object to this uniform block. When
2352 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2357 * Vulkan descriptor set qualifier for this block.
2362 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2363 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2365 GLuint UniformBufferSize
;
2368 * Layout specified in the shader
2370 * This isn't accessible through the API, but it is used while
2371 * cross-validating uniform blocks.
2373 enum gl_uniform_block_packing _Packing
;
2377 * Structure that represents a reference to an atomic buffer from some
2380 struct gl_active_atomic_buffer
2382 /** Uniform indices of the atomic counters declared within it. */
2386 /** Binding point index associated with it. */
2389 /** Minimum reasonable size it is expected to have. */
2392 /** Shader stages making use of it. */
2393 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2397 * Active resource in a gl_shader_program
2399 struct gl_program_resource
2401 GLenum Type
; /** Program interface type. */
2402 const void *Data
; /** Pointer to resource associated data structure. */
2403 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2407 * A GLSL program object.
2408 * Basically a linked collection of vertex and fragment shaders.
2410 struct gl_shader_program
2412 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2413 GLuint Name
; /**< aka handle or ID */
2414 GLchar
*Label
; /**< GL_KHR_debug */
2415 GLint RefCount
; /**< Reference count */
2416 GLboolean DeletePending
;
2419 * Is the application intending to glGetProgramBinary this program?
2421 GLboolean BinaryRetreivableHint
;
2424 * Indicates whether program can be bound for individual pipeline stages
2425 * using UseProgramStages after it is next linked.
2427 GLboolean SeparateShader
;
2429 GLuint NumShaders
; /**< number of attached shaders */
2430 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2433 * User-defined attribute bindings
2435 * These are set via \c glBindAttribLocation and are used to direct the
2436 * GLSL linker. These are \b not the values used in the compiled shader,
2437 * and they are \b not the values returned by \c glGetAttribLocation.
2439 struct string_to_uint_map
*AttributeBindings
;
2442 * User-defined fragment data bindings
2444 * These are set via \c glBindFragDataLocation and are used to direct the
2445 * GLSL linker. These are \b not the values used in the compiled shader,
2446 * and they are \b not the values returned by \c glGetFragDataLocation.
2448 struct string_to_uint_map
*FragDataBindings
;
2449 struct string_to_uint_map
*FragDataIndexBindings
;
2452 * Transform feedback varyings last specified by
2453 * glTransformFeedbackVaryings().
2455 * For the current set of transform feedback varyings used for transform
2456 * feedback output, see LinkedTransformFeedback.
2461 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2462 } TransformFeedback
;
2464 /** Post-link transform feedback info. */
2465 struct gl_transform_feedback_info LinkedTransformFeedback
;
2467 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2468 enum gl_frag_depth_layout FragDepthLayout
;
2471 * Geometry shader state - copied into gl_geometry_program by
2472 * _mesa_copy_linked_program_data().
2478 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2481 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2482 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2483 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2485 * True if gl_ClipDistance is written to. Copied into
2486 * gl_geometry_program by _mesa_copy_linked_program_data().
2488 GLboolean UsesClipDistance
;
2489 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2490 0 if not present. */
2491 bool UsesEndPrimitive
;
2495 /** Vertex shader state */
2498 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2499 * by _mesa_copy_linked_program_data().
2501 GLboolean UsesClipDistance
;
2502 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2503 0 if not present. */
2507 * Compute shader state - copied into gl_compute_program by
2508 * _mesa_copy_linked_program_data().
2512 * If this shader contains a compute stage, size specified using
2513 * local_size_{x,y,z}. Otherwise undefined.
2515 unsigned LocalSize
[3];
2518 /* post-link info: */
2519 unsigned NumUniformStorage
;
2520 unsigned NumHiddenUniforms
;
2521 struct gl_uniform_storage
*UniformStorage
;
2524 * Mapping from GL uniform locations returned by \c glUniformLocation to
2525 * UniformStorage entries. Arrays will have multiple contiguous slots
2526 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2528 unsigned NumUniformRemapTable
;
2529 struct gl_uniform_storage
**UniformRemapTable
;
2532 * Size of the gl_ClipDistance array that is output from the last pipeline
2533 * stage before the fragment shader.
2535 unsigned LastClipDistanceArraySize
;
2537 unsigned NumUniformBlocks
;
2538 struct gl_uniform_block
*UniformBlocks
;
2541 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2542 * they're used in, or -1.
2544 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2545 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2547 int *UniformBlockStageIndex
[MESA_SHADER_STAGES
];
2550 * Map of active uniform names to locations
2552 * Maps any active uniform that is not an array element to a location.
2553 * Each active uniform, including individual structure members will appear
2554 * in this map. This roughly corresponds to the set of names that would be
2555 * enumerated by \c glGetActiveUniform.
2557 struct string_to_uint_map
*UniformHash
;
2559 struct gl_active_atomic_buffer
*AtomicBuffers
;
2560 unsigned NumAtomicBuffers
;
2562 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2563 GLboolean Validated
;
2564 GLboolean _Used
; /**< Ever used for drawing? */
2565 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2568 unsigned Version
; /**< GLSL version used for linking */
2569 bool IsES
; /**< True if this program uses GLSL ES */
2572 * Per-stage shaders resulting from the first stage of linking.
2574 * Set of linked shaders for this program. The array is accessed using the
2575 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2578 struct gl_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2580 /** List of all active resources after linking. */
2581 struct gl_program_resource
*ProgramResourceList
;
2582 unsigned NumProgramResourceList
;
2584 /* True if any of the fragment shaders attached to this program use:
2585 * #extension ARB_fragment_coord_conventions: enable
2587 GLboolean ARB_fragment_coord_conventions_enable
;
2591 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2592 #define GLSL_LOG 0x2 /**< Write shaders to files */
2593 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2594 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2595 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2596 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2597 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2598 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2599 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2600 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2604 * Context state for GLSL vertex/fragment shaders.
2605 * Extended to support pipeline object
2607 struct gl_pipeline_object
2609 /** Name of the pipeline object as received from glGenProgramPipelines.
2610 * It would be 0 for shaders without separate shader objects.
2618 GLchar
*Label
; /**< GL_KHR_debug */
2621 * Programs used for rendering
2623 * There is a separate program set for each shader stage.
2625 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2627 struct gl_shader_program
*_CurrentFragmentProgram
;
2630 * Program used by glUniform calls.
2632 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2634 struct gl_shader_program
*ActiveProgram
;
2636 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2638 GLboolean EverBound
; /**< Has the pipeline object been created */
2640 GLboolean Validated
; /**< Pipeline Validation status */
2646 * Context state for GLSL pipeline shaders.
2648 struct gl_pipeline_shader_state
2650 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2651 struct gl_pipeline_object
*Current
;
2653 /* Default Object to ensure that _Shader is never NULL */
2654 struct gl_pipeline_object
*Default
;
2656 /** Pipeline objects */
2657 struct _mesa_HashTable
*Objects
;
2661 * Compiler options for a single GLSL shaders type
2663 struct gl_shader_compiler_options
2665 /** Driver-selectable options: */
2666 GLboolean EmitCondCodes
; /**< Use condition codes? */
2667 GLboolean EmitNoLoops
;
2668 GLboolean EmitNoFunctions
;
2669 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2670 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2671 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2672 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2673 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2674 GLboolean LowerClipDistance
; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2677 * \name Forms of indirect addressing the driver cannot do.
2680 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2681 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2682 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2683 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2686 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2687 GLuint MaxUnrollIterations
;
2690 * Optimize code for array of structures backends.
2692 * This is a proxy for:
2693 * - preferring DP4 instructions (rather than MUL/MAD) for
2694 * matrix * vector operations, such as position transformation.
2696 GLboolean OptimizeForAOS
;
2698 const struct nir_shader_compiler_options
*NirOptions
;
2703 * Occlusion/timer query object.
2705 struct gl_query_object
2707 GLenum Target
; /**< The query target, when active */
2708 GLuint Id
; /**< hash table ID/name */
2709 GLchar
*Label
; /**< GL_KHR_debug */
2710 GLuint64EXT Result
; /**< the counter */
2711 GLboolean Active
; /**< inside Begin/EndQuery */
2712 GLboolean Ready
; /**< result is ready? */
2713 GLboolean EverBound
;/**< has query object ever been bound */
2714 GLuint Stream
; /**< The stream */
2719 * Context state for query objects.
2721 struct gl_query_state
2723 struct _mesa_HashTable
*QueryObjects
;
2724 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
2725 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
2727 /** GL_NV_conditional_render */
2728 struct gl_query_object
*CondRenderQuery
;
2730 /** GL_EXT_transform_feedback */
2731 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
2732 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
2734 /** GL_ARB_timer_query */
2735 struct gl_query_object
*TimeElapsed
;
2737 /** GL_ARB_pipeline_statistics_query */
2738 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
2740 GLenum CondRenderMode
;
2744 /** Sync object state */
2745 struct gl_sync_object
2747 GLenum Type
; /**< GL_SYNC_FENCE */
2748 GLuint Name
; /**< Fence name */
2749 GLchar
*Label
; /**< GL_KHR_debug */
2750 GLint RefCount
; /**< Reference count */
2751 GLboolean DeletePending
; /**< Object was deleted while there were still
2752 * live references (e.g., sync not yet finished)
2754 GLenum SyncCondition
;
2755 GLbitfield Flags
; /**< Flags passed to glFenceSync */
2756 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
2761 * State which can be shared by multiple contexts:
2763 struct gl_shared_state
2765 mtx_t Mutex
; /**< for thread safety */
2766 GLint RefCount
; /**< Reference count */
2767 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
2768 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
2770 /** Default texture objects (shared by all texture units) */
2771 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
2773 /** Fallback texture used when a bound texture is incomplete */
2774 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
2777 * \name Thread safety and statechange notification for texture
2780 * \todo Improve the granularity of locking.
2783 mtx_t TexMutex
; /**< texobj thread safety */
2784 GLuint TextureStateStamp
; /**< state notification for shared tex */
2787 /** Default buffer object for vertex arrays that aren't in VBOs */
2788 struct gl_buffer_object
*NullBufferObj
;
2791 * \name Vertex/geometry/fragment programs
2794 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
2795 struct gl_vertex_program
*DefaultVertexProgram
;
2796 struct gl_fragment_program
*DefaultFragmentProgram
;
2799 /* GL_ATI_fragment_shader */
2800 struct _mesa_HashTable
*ATIShaders
;
2801 struct ati_fragment_shader
*DefaultFragmentShader
;
2803 struct _mesa_HashTable
*BufferObjects
;
2805 /** Table of both gl_shader and gl_shader_program objects */
2806 struct _mesa_HashTable
*ShaderObjects
;
2808 /* GL_EXT_framebuffer_object */
2809 struct _mesa_HashTable
*RenderBuffers
;
2810 struct _mesa_HashTable
*FrameBuffers
;
2813 struct set
*SyncObjects
;
2815 /** GL_ARB_sampler_objects */
2816 struct _mesa_HashTable
*SamplerObjects
;
2819 * Some context in this share group was affected by a GPU reset
2821 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
2822 * been affected by a GPU reset must also return
2823 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
2825 * Once this field becomes true, it is never reset to false.
2827 bool ShareGroupReset
;
2833 * Renderbuffers represent drawing surfaces such as color, depth and/or
2834 * stencil. A framebuffer object has a set of renderbuffers.
2835 * Drivers will typically derive subclasses of this type.
2837 struct gl_renderbuffer
2839 mtx_t Mutex
; /**< for thread safety */
2840 GLuint ClassID
; /**< Useful for drivers */
2842 GLchar
*Label
; /**< GL_KHR_debug */
2844 GLuint Width
, Height
;
2846 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
2847 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
2849 * True for renderbuffers that wrap textures, giving the driver a chance to
2850 * flush render caches through the FinishRenderTexture hook.
2852 * Drivers may also set this on renderbuffers other than those generated by
2853 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2854 * called without a rb->TexImage.
2856 GLboolean NeedsFinishRenderTexture
;
2858 GLenum InternalFormat
; /**< The user-specified format */
2859 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2860 GL_STENCIL_INDEX. */
2861 mesa_format Format
; /**< The actual renderbuffer memory format */
2863 * Pointer to the texture image if this renderbuffer wraps a texture,
2866 * Note that the reference on the gl_texture_object containing this
2867 * TexImage is held by the gl_renderbuffer_attachment.
2869 struct gl_texture_image
*TexImage
;
2871 /** Delete this renderbuffer */
2872 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
2874 /** Allocate new storage for this renderbuffer */
2875 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
2876 struct gl_renderbuffer
*rb
,
2877 GLenum internalFormat
,
2878 GLuint width
, GLuint height
);
2883 * A renderbuffer attachment points to either a texture object (and specifies
2884 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2886 struct gl_renderbuffer_attachment
2888 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2892 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2893 * application supplied renderbuffer object.
2895 struct gl_renderbuffer
*Renderbuffer
;
2898 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2899 * supplied texture object.
2901 struct gl_texture_object
*Texture
;
2902 GLuint TextureLevel
; /**< Attached mipmap level. */
2903 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
2904 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
2905 * and 2D array textures */
2911 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2912 * In C++ terms, think of this as a base class from which device drivers
2913 * will make derived classes.
2915 struct gl_framebuffer
2917 mtx_t Mutex
; /**< for thread safety */
2919 * If zero, this is a window system framebuffer. If non-zero, this
2920 * is a FBO framebuffer; note that for some devices (i.e. those with
2921 * a natural pixel coordinate system for FBOs that differs from the
2922 * OpenGL/Mesa coordinate system), this means that the viewport,
2923 * polygon face orientation, and polygon stipple will have to be inverted.
2928 GLchar
*Label
; /**< GL_KHR_debug */
2930 GLboolean DeletePending
;
2933 * The framebuffer's visual. Immutable if this is a window system buffer.
2934 * Computed from attachments if user-made FBO.
2936 struct gl_config Visual
;
2939 * Size of frame buffer in pixels. If there are no attachments, then both
2942 GLuint Width
, Height
;
2945 * In the case that the framebuffer has no attachment (i.e.
2946 * GL_ARB_framebuffer_no_attachments) then the geometry of
2947 * the framebuffer is specified by the default values.
2950 GLuint Width
, Height
, Layers
, NumSamples
;
2951 GLboolean FixedSampleLocations
;
2954 /** \name Drawing bounds (Intersection of buffer size and scissor box)
2955 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
2956 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
2963 /** \name Derived Z buffer stuff */
2965 GLuint _DepthMax
; /**< Max depth buffer value */
2966 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2967 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2970 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2973 /** Whether one of Attachment has Type != GL_NONE
2974 * NOTE: the values for Width and Height are set to 0 in case of having
2975 * no attachments, a backend driver supporting the extension
2976 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
2977 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
2978 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
2979 * _Ymax do NOT take into account _HasAttachments being false). To get the
2980 * geometry of the framebuffer, the helper functions
2981 * _mesa_geometric_width(),
2982 * _mesa_geometric_height(),
2983 * _mesa_geometric_samples() and
2984 * _mesa_geometric_layers()
2985 * are available that check _HasAttachments.
2987 bool _HasAttachments
;
2989 /** Integer color values */
2990 GLboolean _IntegerColor
;
2992 /* ARB_color_buffer_float */
2993 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
2994 GLboolean _HasSNormOrFloatColorBuffer
;
2997 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
2998 * is not layered. For cube maps and cube map arrays, each cube face
2999 * counts as a layer. As the case for Width, Height a backend driver
3000 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3001 * in the case that _HasAttachments is false
3003 GLuint MaxNumLayers
;
3005 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3006 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3008 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3009 * attribute group and GL_PIXEL attribute group, respectively.
3011 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3012 GLenum ColorReadBuffer
;
3014 /** Computed from ColorDraw/ReadBuffer above */
3015 GLuint _NumColorDrawBuffers
;
3016 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3017 GLint _ColorReadBufferIndex
; /* -1 = None */
3018 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3019 struct gl_renderbuffer
*_ColorReadBuffer
;
3021 /** Delete this framebuffer */
3022 void (*Delete
)(struct gl_framebuffer
*fb
);
3027 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3031 GLushort RangeMin
; /**< min value exponent */
3032 GLushort RangeMax
; /**< max value exponent */
3033 GLushort Precision
; /**< number of mantissa bits */
3038 * Limits for vertex, geometry and fragment programs/shaders.
3040 struct gl_program_constants
3042 /* logical limits */
3043 GLuint MaxInstructions
;
3044 GLuint MaxAluInstructions
;
3045 GLuint MaxTexInstructions
;
3046 GLuint MaxTexIndirections
;
3049 GLuint MaxAddressRegs
;
3050 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3051 GLuint MaxParameters
;
3052 GLuint MaxLocalParams
;
3053 GLuint MaxEnvParams
;
3054 /* native/hardware limits */
3055 GLuint MaxNativeInstructions
;
3056 GLuint MaxNativeAluInstructions
;
3057 GLuint MaxNativeTexInstructions
;
3058 GLuint MaxNativeTexIndirections
;
3059 GLuint MaxNativeAttribs
;
3060 GLuint MaxNativeTemps
;
3061 GLuint MaxNativeAddressRegs
;
3062 GLuint MaxNativeParameters
;
3064 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3067 * \name Per-stage input / output limits
3069 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3070 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3071 * ES). This is stored as \c gl_constants::MaxVarying.
3073 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3074 * variables. Each stage as a certain number of outputs that it can feed
3075 * to the next stage and a certain number inputs that it can consume from
3076 * the previous stage.
3078 * Vertex shader inputs do not participate this in this accounting.
3079 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3081 * Fragment shader outputs do not participate this in this accounting.
3082 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3085 GLuint MaxInputComponents
;
3086 GLuint MaxOutputComponents
;
3089 /* ES 2.0 and GL_ARB_ES2_compatibility */
3090 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3091 struct gl_precision LowInt
, MediumInt
, HighInt
;
3092 /* GL_ARB_uniform_buffer_object */
3093 GLuint MaxUniformBlocks
;
3094 GLuint MaxCombinedUniformComponents
;
3095 GLuint MaxTextureImageUnits
;
3097 /* GL_ARB_shader_atomic_counters */
3098 GLuint MaxAtomicBuffers
;
3099 GLuint MaxAtomicCounters
;
3101 /* GL_ARB_shader_image_load_store */
3102 GLuint MaxImageUniforms
;
3107 * Constants which may be overridden by device driver during context creation
3108 * but are never changed after that.
3112 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3113 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3114 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3115 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3116 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3117 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3118 GLuint MaxTextureCoordUnits
;
3119 GLuint MaxCombinedTextureImageUnits
;
3120 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3121 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3122 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3123 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3125 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3127 GLuint MaxArrayLockSize
;
3131 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3132 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3133 GLfloat PointSizeGranularity
;
3134 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3135 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3136 GLfloat LineWidthGranularity
;
3138 GLuint MaxClipPlanes
;
3140 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3141 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3143 GLuint MaxViewportWidth
, MaxViewportHeight
;
3144 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3145 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3149 } ViewportBounds
; /**< GL_ARB_viewport_array */
3151 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3152 GLuint MaxProgramMatrices
;
3153 GLuint MaxProgramMatrixStackDepth
;
3156 GLuint SamplesPassed
;
3159 GLuint PrimitivesGenerated
;
3160 GLuint PrimitivesWritten
;
3161 GLuint VerticesSubmitted
;
3162 GLuint PrimitivesSubmitted
;
3163 GLuint VsInvocations
;
3165 GLuint TessInvocations
;
3166 GLuint GsInvocations
;
3167 GLuint GsPrimitives
;
3168 GLuint FsInvocations
;
3169 GLuint ComputeInvocations
;
3170 GLuint ClInPrimitives
;
3171 GLuint ClOutPrimitives
;
3174 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3176 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3177 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3178 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3181 * GL_ARB_framebuffer_no_attachments
3183 GLuint MaxFramebufferWidth
;
3184 GLuint MaxFramebufferHeight
;
3185 GLuint MaxFramebufferLayers
;
3186 GLuint MaxFramebufferSamples
;
3188 /** Number of varying vectors between any two shader stages. */
3192 * GL_ARB_uniform_buffer_object
3194 GLuint MaxCombinedUniformBlocks
;
3195 GLuint MaxUniformBufferBindings
;
3196 GLuint MaxUniformBlockSize
;
3197 GLuint UniformBufferOffsetAlignment
;
3201 * GL_ARB_explicit_uniform_location
3203 GLuint MaxUserAssignableUniformLocations
;
3205 /** GL_ARB_geometry_shader4 */
3206 GLuint MaxGeometryOutputVertices
;
3207 GLuint MaxGeometryTotalOutputComponents
;
3209 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3212 * Changes default GLSL extension behavior from "error" to "warn". It's out
3213 * of spec, but it can make some apps work that otherwise wouldn't.
3215 GLboolean ForceGLSLExtensionsWarn
;
3218 * If non-zero, forces GLSL shaders to behave as if they began
3219 * with "#version ForceGLSLVersion".
3221 GLuint ForceGLSLVersion
;
3224 * Allow GLSL #extension directives in the middle of shaders.
3226 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3229 * Does the driver support real 32-bit integers? (Otherwise, integers are
3230 * simulated via floats.)
3232 GLboolean NativeIntegers
;
3235 * Does VertexID count from zero or from base vertex?
3238 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3239 * ignored and need not be set.
3241 bool VertexID_is_zero_based
;
3244 * If the driver supports real 32-bit integers, what integer value should be
3245 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3247 GLuint UniformBooleanTrue
;
3250 * Maximum amount of time, measured in nanseconds, that the server can wait.
3252 GLuint64 MaxServerWaitTimeout
;
3254 /** GL_EXT_provoking_vertex */
3255 GLboolean QuadsFollowProvokingVertexConvention
;
3257 /** OpenGL version 3.0 */
3258 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3260 /** OpenGL version 3.2 */
3261 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3263 /** OpenGL version 4.4 */
3264 GLuint MaxVertexAttribStride
;
3266 /** GL_EXT_transform_feedback */
3267 GLuint MaxTransformFeedbackBuffers
;
3268 GLuint MaxTransformFeedbackSeparateComponents
;
3269 GLuint MaxTransformFeedbackInterleavedComponents
;
3270 GLuint MaxVertexStreams
;
3272 /** GL_EXT_gpu_shader4 */
3273 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3275 /** GL_ARB_texture_gather */
3276 GLuint MinProgramTextureGatherOffset
;
3277 GLuint MaxProgramTextureGatherOffset
;
3278 GLuint MaxProgramTextureGatherComponents
;
3280 /* GL_ARB_robustness */
3281 GLenum ResetStrategy
;
3283 /* GL_ARB_blend_func_extended */
3284 GLuint MaxDualSourceDrawBuffers
;
3287 * Whether the implementation strips out and ignores texture borders.
3289 * Many GPU hardware implementations don't support rendering with texture
3290 * borders and mipmapped textures. (Note: not static border color, but the
3291 * old 1-pixel border around each edge). Implementations then have to do
3292 * slow fallbacks to be correct, or just ignore the border and be fast but
3293 * wrong. Setting the flag strips the border off of TexImage calls,
3294 * providing "fast but wrong" at significantly reduced driver complexity.
3296 * Texture borders are deprecated in GL 3.0.
3298 GLboolean StripTextureBorder
;
3301 * For drivers which can do a better job at eliminating unused uniforms
3302 * than the GLSL compiler.
3304 * XXX Remove these as soon as a better solution is available.
3306 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3309 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3310 * than passing the transform feedback object to the drawing function.
3312 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3314 /** GL_ARB_map_buffer_alignment */
3315 GLuint MinMapBufferAlignment
;
3318 * Disable varying packing. This is out of spec, but potentially useful
3319 * for older platforms that supports a limited number of texture
3320 * indirections--on these platforms, unpacking the varyings in the fragment
3321 * shader increases the number of texture indirections by 1, which might
3322 * make some shaders not executable at all.
3324 * Drivers that support transform feedback must set this value to GL_FALSE.
3326 GLboolean DisableVaryingPacking
;
3329 * Should meaningful names be generated for compiler temporary variables?
3331 * Generally, it is not useful to have the compiler generate "meaningful"
3332 * names for temporary variables that it creates. This can, however, be a
3333 * useful debugging aid. In Mesa debug builds or release builds when
3334 * MESA_GLSL is set at run-time, meaningful names will be generated.
3335 * Drivers can also force names to be generated by setting this field.
3336 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3337 * vertex shader assembly) is set at run-time.
3339 bool GenerateTemporaryNames
;
3342 * Maximum value supported for an index in DrawElements and friends.
3344 * This must be at least (1ull<<24)-1. The default value is
3347 * \since ES 3.0 or GL_ARB_ES3_compatibility
3348 * \sa _mesa_init_constants
3350 GLuint64 MaxElementIndex
;
3353 * Disable interpretation of line continuations (lines ending with a
3354 * backslash character ('\') in GLSL source.
3356 GLboolean DisableGLSLLineContinuations
;
3358 /** GL_ARB_texture_multisample */
3359 GLint MaxColorTextureSamples
;
3360 GLint MaxDepthTextureSamples
;
3361 GLint MaxIntegerSamples
;
3364 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3365 * samples are laid out in a rectangular grid roughly corresponding to
3366 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3367 * are used to map indices of rectangular grid to sample numbers within
3368 * a pixel. This mapping of indices to sample numbers must be initialized
3369 * by the driver for the target hardware. For example, if we have the 8X
3370 * MSAA sample number layout (sample positions) for XYZ hardware:
3372 * sample indices layout sample number layout
3373 * --------- ---------
3374 * | 0 | 1 | | a | b |
3375 * --------- ---------
3376 * | 2 | 3 | | c | d |
3377 * --------- ---------
3378 * | 4 | 5 | | e | f |
3379 * --------- ---------
3380 * | 6 | 7 | | g | h |
3381 * --------- ---------
3383 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3385 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3387 * SampleMap8x = {a, b, c, d, e, f, g, h};
3389 * Follow the logic for other sample counts.
3391 uint8_t SampleMap2x
[2];
3392 uint8_t SampleMap4x
[4];
3393 uint8_t SampleMap8x
[8];
3395 /** GL_ARB_shader_atomic_counters */
3396 GLuint MaxAtomicBufferBindings
;
3397 GLuint MaxAtomicBufferSize
;
3398 GLuint MaxCombinedAtomicBuffers
;
3399 GLuint MaxCombinedAtomicCounters
;
3401 /** GL_ARB_vertex_attrib_binding */
3402 GLint MaxVertexAttribRelativeOffset
;
3403 GLint MaxVertexAttribBindings
;
3405 /* GL_ARB_shader_image_load_store */
3406 GLuint MaxImageUnits
;
3407 GLuint MaxCombinedImageUnitsAndFragmentOutputs
;
3408 GLuint MaxImageSamples
;
3409 GLuint MaxCombinedImageUniforms
;
3411 /** GL_ARB_compute_shader */
3412 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3413 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3414 GLuint MaxComputeWorkGroupInvocations
;
3416 /** GL_ARB_gpu_shader5 */
3417 GLfloat MinFragmentInterpolationOffset
;
3418 GLfloat MaxFragmentInterpolationOffset
;
3420 GLboolean FakeSWMSAA
;
3422 /** GL_KHR_context_flush_control */
3423 GLenum ContextReleaseBehavior
;
3425 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3430 * Enable flag for each OpenGL extension. Different device drivers will
3431 * enable different extensions at runtime.
3433 struct gl_extensions
3435 GLboolean dummy
; /* don't remove this! */
3436 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3437 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3438 GLboolean ANGLE_texture_compression_dxt
;
3439 GLboolean ARB_ES2_compatibility
;
3440 GLboolean ARB_ES3_compatibility
;
3441 GLboolean ARB_arrays_of_arrays
;
3442 GLboolean ARB_base_instance
;
3443 GLboolean ARB_blend_func_extended
;
3444 GLboolean ARB_buffer_storage
;
3445 GLboolean ARB_clear_texture
;
3446 GLboolean ARB_clip_control
;
3447 GLboolean ARB_color_buffer_float
;
3448 GLboolean ARB_compute_shader
;
3449 GLboolean ARB_conditional_render_inverted
;
3450 GLboolean ARB_conservative_depth
;
3451 GLboolean ARB_copy_image
;
3452 GLboolean ARB_depth_buffer_float
;
3453 GLboolean ARB_depth_clamp
;
3454 GLboolean ARB_depth_texture
;
3455 GLboolean ARB_derivative_control
;
3456 GLboolean ARB_draw_buffers_blend
;
3457 GLboolean ARB_draw_elements_base_vertex
;
3458 GLboolean ARB_draw_indirect
;
3459 GLboolean ARB_draw_instanced
;
3460 GLboolean ARB_fragment_coord_conventions
;
3461 GLboolean ARB_fragment_layer_viewport
;
3462 GLboolean ARB_fragment_program
;
3463 GLboolean ARB_fragment_program_shadow
;
3464 GLboolean ARB_fragment_shader
;
3465 GLboolean ARB_framebuffer_no_attachments
;
3466 GLboolean ARB_framebuffer_object
;
3467 GLboolean ARB_explicit_attrib_location
;
3468 GLboolean ARB_explicit_uniform_location
;
3469 GLboolean ARB_geometry_shader4
;
3470 GLboolean ARB_gpu_shader5
;
3471 GLboolean ARB_gpu_shader_fp64
;
3472 GLboolean ARB_half_float_vertex
;
3473 GLboolean ARB_instanced_arrays
;
3474 GLboolean ARB_internalformat_query
;
3475 GLboolean ARB_map_buffer_range
;
3476 GLboolean ARB_occlusion_query
;
3477 GLboolean ARB_occlusion_query2
;
3478 GLboolean ARB_pipeline_statistics_query
;
3479 GLboolean ARB_point_sprite
;
3480 GLboolean ARB_sample_shading
;
3481 GLboolean ARB_seamless_cube_map
;
3482 GLboolean ARB_shader_atomic_counters
;
3483 GLboolean ARB_shader_bit_encoding
;
3484 GLboolean ARB_shader_image_load_store
;
3485 GLboolean ARB_shader_precision
;
3486 GLboolean ARB_shader_stencil_export
;
3487 GLboolean ARB_shader_texture_lod
;
3488 GLboolean ARB_shading_language_packing
;
3489 GLboolean ARB_shading_language_420pack
;
3490 GLboolean ARB_shadow
;
3491 GLboolean ARB_stencil_texturing
;
3493 GLboolean ARB_tessellation_shader
;
3494 GLboolean ARB_texture_border_clamp
;
3495 GLboolean ARB_texture_buffer_object
;
3496 GLboolean ARB_texture_buffer_object_rgb32
;
3497 GLboolean ARB_texture_buffer_range
;
3498 GLboolean ARB_texture_compression_bptc
;
3499 GLboolean ARB_texture_compression_rgtc
;
3500 GLboolean ARB_texture_cube_map
;
3501 GLboolean ARB_texture_cube_map_array
;
3502 GLboolean ARB_texture_env_combine
;
3503 GLboolean ARB_texture_env_crossbar
;
3504 GLboolean ARB_texture_env_dot3
;
3505 GLboolean ARB_texture_float
;
3506 GLboolean ARB_texture_gather
;
3507 GLboolean ARB_texture_mirror_clamp_to_edge
;
3508 GLboolean ARB_texture_multisample
;
3509 GLboolean ARB_texture_non_power_of_two
;
3510 GLboolean ARB_texture_stencil8
;
3511 GLboolean ARB_texture_query_levels
;
3512 GLboolean ARB_texture_query_lod
;
3513 GLboolean ARB_texture_rg
;
3514 GLboolean ARB_texture_rgb10_a2ui
;
3515 GLboolean ARB_texture_view
;
3516 GLboolean ARB_timer_query
;
3517 GLboolean ARB_transform_feedback2
;
3518 GLboolean ARB_transform_feedback3
;
3519 GLboolean ARB_transform_feedback_instanced
;
3520 GLboolean ARB_uniform_buffer_object
;
3521 GLboolean ARB_vertex_attrib_64bit
;
3522 GLboolean ARB_vertex_program
;
3523 GLboolean ARB_vertex_shader
;
3524 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3525 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3526 GLboolean ARB_viewport_array
;
3527 GLboolean EXT_blend_color
;
3528 GLboolean EXT_blend_equation_separate
;
3529 GLboolean EXT_blend_func_separate
;
3530 GLboolean EXT_blend_minmax
;
3531 GLboolean EXT_depth_bounds_test
;
3532 GLboolean EXT_draw_buffers2
;
3533 GLboolean EXT_framebuffer_multisample
;
3534 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3535 GLboolean EXT_framebuffer_sRGB
;
3536 GLboolean EXT_gpu_program_parameters
;
3537 GLboolean EXT_gpu_shader4
;
3538 GLboolean EXT_packed_float
;
3539 GLboolean EXT_pixel_buffer_object
;
3540 GLboolean EXT_point_parameters
;
3541 GLboolean EXT_polygon_offset_clamp
;
3542 GLboolean EXT_provoking_vertex
;
3543 GLboolean EXT_shader_integer_mix
;
3544 GLboolean EXT_stencil_two_side
;
3545 GLboolean EXT_texture3D
;
3546 GLboolean EXT_texture_array
;
3547 GLboolean EXT_texture_compression_latc
;
3548 GLboolean EXT_texture_compression_s3tc
;
3549 GLboolean EXT_texture_env_dot3
;
3550 GLboolean EXT_texture_filter_anisotropic
;
3551 GLboolean EXT_texture_integer
;
3552 GLboolean EXT_texture_mirror_clamp
;
3553 GLboolean EXT_texture_shared_exponent
;
3554 GLboolean EXT_texture_snorm
;
3555 GLboolean EXT_texture_sRGB
;
3556 GLboolean EXT_texture_sRGB_decode
;
3557 GLboolean EXT_texture_swizzle
;
3558 GLboolean EXT_transform_feedback
;
3559 GLboolean EXT_timer_query
;
3560 GLboolean EXT_vertex_array_bgra
;
3561 GLboolean OES_standard_derivatives
;
3562 /* vendor extensions */
3563 GLboolean AMD_performance_monitor
;
3564 GLboolean AMD_pinned_memory
;
3565 GLboolean AMD_seamless_cubemap_per_texture
;
3566 GLboolean AMD_vertex_shader_layer
;
3567 GLboolean AMD_vertex_shader_viewport_index
;
3568 GLboolean APPLE_object_purgeable
;
3569 GLboolean ATI_texture_compression_3dc
;
3570 GLboolean ATI_texture_mirror_once
;
3571 GLboolean ATI_texture_env_combine3
;
3572 GLboolean ATI_fragment_shader
;
3573 GLboolean ATI_separate_stencil
;
3574 GLboolean INTEL_performance_query
;
3575 GLboolean MESA_pack_invert
;
3576 GLboolean MESA_ycbcr_texture
;
3577 GLboolean NV_conditional_render
;
3578 GLboolean NV_fog_distance
;
3579 GLboolean NV_fragment_program_option
;
3580 GLboolean NV_point_sprite
;
3581 GLboolean NV_primitive_restart
;
3582 GLboolean NV_texture_barrier
;
3583 GLboolean NV_texture_env_combine4
;
3584 GLboolean NV_texture_rectangle
;
3585 GLboolean NV_vdpau_interop
;
3586 GLboolean TDFX_texture_compression_FXT1
;
3587 GLboolean OES_EGL_image
;
3588 GLboolean OES_draw_texture
;
3589 GLboolean OES_depth_texture_cube_map
;
3590 GLboolean OES_EGL_image_external
;
3591 GLboolean OES_texture_float
;
3592 GLboolean OES_texture_float_linear
;
3593 GLboolean OES_texture_half_float
;
3594 GLboolean OES_texture_half_float_linear
;
3595 GLboolean OES_compressed_ETC1_RGB8_texture
;
3596 GLboolean extension_sentinel
;
3597 /** The extension string */
3598 const GLubyte
*String
;
3599 /** Number of supported extensions */
3605 * A stack of matrices (projection, modelview, color, texture, etc).
3607 struct gl_matrix_stack
3609 GLmatrix
*Top
; /**< points into Stack */
3610 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3611 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3612 GLuint MaxDepth
; /**< size of Stack[] array */
3613 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3618 * \name Bits for image transfer operations
3619 * \sa __struct gl_contextRec::ImageTransferState.
3622 #define IMAGE_SCALE_BIAS_BIT 0x1
3623 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3624 #define IMAGE_MAP_COLOR_BIT 0x4
3625 #define IMAGE_CLAMP_BIT 0x800
3628 /** Pixel Transfer ops */
3629 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3630 IMAGE_SHIFT_OFFSET_BIT | \
3631 IMAGE_MAP_COLOR_BIT)
3634 * \name Bits to indicate what state has changed.
3637 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3638 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3639 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3640 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3641 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3642 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3643 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3644 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3645 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3646 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3647 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3648 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3649 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3650 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3651 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3652 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3653 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3654 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3655 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3656 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3657 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3658 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3659 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3660 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3661 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3662 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3663 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3664 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3665 #define _NEW_BUFFER_OBJECT (1 << 28)
3666 #define _NEW_FRAG_CLAMP (1 << 29)
3667 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3668 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3674 * Composite state flags
3677 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3683 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3693 /* This has to be included here. */
3698 * Display list flags.
3699 * Strictly this is a tnl-private concept, but it doesn't seem
3700 * worthwhile adding a tnl private structure just to hold this one bit
3703 #define DLIST_DANGLING_REFS 0x1
3706 /** Opaque declaration of display list payload data type */
3707 union gl_dlist_node
;
3711 * Provide a location where information about a display list can be
3712 * collected. Could be extended with driverPrivate structures,
3713 * etc. in the future.
3715 struct gl_display_list
3718 GLchar
*Label
; /**< GL_KHR_debug */
3719 GLbitfield Flags
; /**< DLIST_x flags */
3720 /** The dlist commands are in a linked list of nodes */
3721 union gl_dlist_node
*Head
;
3726 * State used during display list compilation and execution.
3728 struct gl_dlist_state
3730 GLuint CallDepth
; /**< Current recursion calling depth */
3732 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
3733 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
3734 GLuint CurrentPos
; /**< Index into current block of nodes */
3736 GLvertexformat ListVtxfmt
;
3738 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
3739 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
3741 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
3742 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
3745 /* State known to have been set by the currently-compiling display
3746 * list. Used to eliminate some redundant state changes.
3754 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3755 * to small enums suitable for use as an array index.
3758 enum mesa_debug_source
{
3759 MESA_DEBUG_SOURCE_API
,
3760 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
3761 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
3762 MESA_DEBUG_SOURCE_THIRD_PARTY
,
3763 MESA_DEBUG_SOURCE_APPLICATION
,
3764 MESA_DEBUG_SOURCE_OTHER
,
3765 MESA_DEBUG_SOURCE_COUNT
3768 enum mesa_debug_type
{
3769 MESA_DEBUG_TYPE_ERROR
,
3770 MESA_DEBUG_TYPE_DEPRECATED
,
3771 MESA_DEBUG_TYPE_UNDEFINED
,
3772 MESA_DEBUG_TYPE_PORTABILITY
,
3773 MESA_DEBUG_TYPE_PERFORMANCE
,
3774 MESA_DEBUG_TYPE_OTHER
,
3775 MESA_DEBUG_TYPE_MARKER
,
3776 MESA_DEBUG_TYPE_PUSH_GROUP
,
3777 MESA_DEBUG_TYPE_POP_GROUP
,
3778 MESA_DEBUG_TYPE_COUNT
3781 enum mesa_debug_severity
{
3782 MESA_DEBUG_SEVERITY_LOW
,
3783 MESA_DEBUG_SEVERITY_MEDIUM
,
3784 MESA_DEBUG_SEVERITY_HIGH
,
3785 MESA_DEBUG_SEVERITY_NOTIFICATION
,
3786 MESA_DEBUG_SEVERITY_COUNT
3792 * Driver-specific state flags.
3794 * These are or'd with gl_context::NewDriverState to notify a driver about
3795 * a state change. The driver sets the flags at context creation and
3796 * the meaning of the bits set is opaque to core Mesa.
3798 struct gl_driver_flags
3800 /** gl_context::Array::_DrawArrays (vertex array state) */
3803 /** gl_context::TransformFeedback::CurrentObject */
3804 uint64_t NewTransformFeedback
;
3806 /** gl_context::TransformFeedback::CurrentObject::shader_program */
3807 uint64_t NewTransformFeedbackProg
;
3809 /** gl_context::RasterDiscard */
3810 uint64_t NewRasterizerDiscard
;
3813 * gl_context::UniformBufferBindings
3814 * gl_shader_program::UniformBlocks
3816 uint64_t NewUniformBuffer
;
3818 uint64_t NewTextureBuffer
;
3821 * gl_context::AtomicBufferBindings
3823 uint64_t NewAtomicBuffer
;
3826 * gl_context::ImageUnits
3828 uint64_t NewImageUnits
;
3831 struct gl_uniform_buffer_binding
3833 struct gl_buffer_object
*BufferObject
;
3834 /** Start of uniform block data in the buffer */
3836 /** Size of data allowed to be referenced from the buffer (in bytes) */
3839 * glBindBufferBase() indicates that the Size should be ignored and only
3840 * limited by the current size of the BufferObject.
3842 GLboolean AutomaticSize
;
3846 * ARB_shader_image_load_store image unit.
3848 struct gl_image_unit
3851 * Texture object bound to this unit.
3853 struct gl_texture_object
*TexObj
;
3856 * Level of the texture object bound to this unit.
3861 * \c GL_TRUE if the whole level is bound as an array of layers, \c
3862 * GL_FALSE if only some specific layer of the texture is bound.
3868 * GL_TRUE if the state of this image unit is valid and access from
3869 * the shader is allowed. Otherwise loads from this unit should
3870 * return zero and stores should have no effect.
3875 * Layer of the texture object bound to this unit, or zero if the
3876 * whole level is bound.
3881 * Access allowed to this texture image. Either \c GL_READ_ONLY,
3882 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
3887 * GL internal format that determines the interpretation of the
3888 * image memory when shader image operations are performed through
3894 * Mesa format corresponding to \c Format.
3896 mesa_format _ActualFormat
;
3901 * Binding point for an atomic counter buffer object.
3903 struct gl_atomic_buffer_binding
3905 struct gl_buffer_object
*BufferObject
;
3911 * Mesa rendering context.
3913 * This is the central context data structure for Mesa. Almost all
3914 * OpenGL state is contained in this structure.
3915 * Think of this as a base class from which device drivers will derive
3920 /** State possibly shared with other contexts in the address space */
3921 struct gl_shared_state
*Shared
;
3923 /** \name API function pointer tables */
3927 * The current dispatch table for non-displaylist-saving execution, either
3928 * BeginEnd or OutsideBeginEnd
3930 struct _glapi_table
*Exec
;
3932 * The normal dispatch table for non-displaylist-saving, non-begin/end
3934 struct _glapi_table
*OutsideBeginEnd
;
3935 /** The dispatch table used between glNewList() and glEndList() */
3936 struct _glapi_table
*Save
;
3938 * The dispatch table used between glBegin() and glEnd() (outside of a
3939 * display list). Only valid functions between those two are set, which is
3940 * mostly just the set in a GLvertexformat struct.
3942 struct _glapi_table
*BeginEnd
;
3944 * Tracks the current dispatch table out of the 3 above, so that it can be
3945 * re-set on glXMakeCurrent().
3947 struct _glapi_table
*CurrentDispatch
;
3950 struct gl_config Visual
;
3951 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
3952 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
3953 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
3954 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
3957 * Device driver function pointer table
3959 struct dd_function_table Driver
;
3961 /** Core/Driver constants */
3962 struct gl_constants Const
;
3964 /** \name The various 4x4 matrix stacks */
3966 struct gl_matrix_stack ModelviewMatrixStack
;
3967 struct gl_matrix_stack ProjectionMatrixStack
;
3968 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
3969 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
3970 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
3973 /** Combined modelview and projection matrix */
3974 GLmatrix _ModelProjectMatrix
;
3976 /** \name Display lists */
3977 struct gl_dlist_state ListState
;
3979 GLboolean ExecuteFlag
; /**< Execute GL commands? */
3980 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
3982 /** Extension information */
3983 struct gl_extensions Extensions
;
3985 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3987 char *VersionString
;
3989 /** \name State attribute stack (for glPush/PopAttrib) */
3991 GLuint AttribStackDepth
;
3992 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
3995 /** \name Renderer attribute groups
3997 * We define a struct for each attribute group to make pushing and popping
3998 * attributes easy. Also it's a good organization.
4001 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4002 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4003 struct gl_current_attrib Current
; /**< Current attributes */
4004 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4005 struct gl_eval_attrib Eval
; /**< Eval attributes */
4006 struct gl_fog_attrib Fog
; /**< Fog attributes */
4007 struct gl_hint_attrib Hint
; /**< Hint attributes */
4008 struct gl_light_attrib Light
; /**< Light attributes */
4009 struct gl_line_attrib Line
; /**< Line attributes */
4010 struct gl_list_attrib List
; /**< List attributes */
4011 struct gl_multisample_attrib Multisample
;
4012 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4013 struct gl_point_attrib Point
; /**< Point attributes */
4014 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4015 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4016 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4017 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4018 struct gl_texture_attrib Texture
; /**< Texture attributes */
4019 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4020 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4023 /** \name Client attribute stack */
4025 GLuint ClientAttribStackDepth
;
4026 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4029 /** \name Client attribute groups */
4031 struct gl_array_attrib Array
; /**< Vertex arrays */
4032 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4033 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4034 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4037 /** \name Other assorted state (not pushed/popped on attribute stack) */
4039 struct gl_pixelmaps PixelMaps
;
4041 struct gl_evaluators EvalMap
; /**< All evaluators */
4042 struct gl_feedback Feedback
; /**< Feedback */
4043 struct gl_selection Select
; /**< Selection */
4045 struct gl_program_state Program
; /**< general program state */
4046 struct gl_vertex_program_state VertexProgram
;
4047 struct gl_fragment_program_state FragmentProgram
;
4048 struct gl_geometry_program_state GeometryProgram
;
4049 struct gl_compute_program_state ComputeProgram
;
4050 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4052 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4053 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4056 * Current active shader pipeline state
4058 * Almost all internal users want ::_Shader instead of ::Shader. The
4059 * exceptions are bits of legacy GLSL API that do not know about separate
4062 * If a program is active via \c glUseProgram, this will point to
4065 * If a program pipeline is active via \c glBindProgramPipeline, this will
4066 * point to \c ::Pipeline.Current.
4068 * If neither a program nor a program pipeline is active, this will point to
4069 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4072 struct gl_pipeline_object
*_Shader
;
4074 struct gl_query_state Query
; /**< occlusion, timer queries */
4076 struct gl_transform_feedback_state TransformFeedback
;
4078 struct gl_perf_monitor_state PerfMonitor
;
4080 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4082 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4083 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4086 * Current GL_ARB_uniform_buffer_object binding referenced by
4087 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4089 struct gl_buffer_object
*UniformBuffer
;
4092 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4093 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4094 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4097 struct gl_uniform_buffer_binding
4098 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4101 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4104 struct gl_buffer_object
*AtomicBuffer
;
4107 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4110 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4113 * Array of atomic counter buffer binding points.
4115 struct gl_atomic_buffer_binding
4116 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4119 * Array of image units for ARB_shader_image_load_store.
4121 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4125 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4127 /* GL_EXT_framebuffer_object */
4128 struct gl_renderbuffer
*CurrentRenderbuffer
;
4130 GLenum ErrorValue
; /**< Last error code */
4133 * Recognize and silence repeated error debug messages in buggy apps.
4135 const char *ErrorDebugFmtString
;
4136 GLuint ErrorDebugCount
;
4138 /* GL_ARB_debug_output/GL_KHR_debug */
4140 struct gl_debug_state
*Debug
;
4142 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4143 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4144 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4146 struct gl_driver_flags DriverFlags
;
4148 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4150 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4152 /** \name Derived state */
4153 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4154 GLfloat _EyeZDir
[3];
4155 GLfloat _ModelViewInvScale
;
4156 GLboolean _NeedEyeCoords
;
4157 GLboolean _ForceEyeCoords
;
4159 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4161 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4163 /** \name For debugging/development only */
4165 GLboolean FirstTimeCurrent
;
4169 * False if this context was created without a config. This is needed
4170 * because the initial state of glDrawBuffers depends on this
4172 GLboolean HasConfig
;
4174 /** software compression/decompression supported or not */
4175 GLboolean Mesa_DXTn
;
4177 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4179 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4182 * \name Hooks for module contexts.
4184 * These will eventually live in the driver or elsewhere.
4187 void *swrast_context
;
4188 void *swsetup_context
;
4189 void *swtnl_context
;
4190 struct vbo_context
*vbo_context
;
4191 struct st_context
*st
;
4196 * \name NV_vdpau_interop
4199 const void *vdpDevice
;
4200 const void *vdpGetProcAddress
;
4201 struct set
*vdpSurfaces
;
4205 * Has this context observed a GPU reset in any context in the share group?
4207 * Once this field becomes true, it is never reset to false.
4209 GLboolean ShareGroupReset
;
4214 extern int MESA_VERBOSE
;
4215 extern int MESA_DEBUG_FLAGS
;
4216 # define MESA_FUNCTION __func__
4218 # define MESA_VERBOSE 0
4219 # define MESA_DEBUG_FLAGS 0
4220 # define MESA_FUNCTION "a function"
4224 /** The MESA_VERBOSE var is a bitmask of these flags */
4227 VERBOSE_VARRAY
= 0x0001,
4228 VERBOSE_TEXTURE
= 0x0002,
4229 VERBOSE_MATERIAL
= 0x0004,
4230 VERBOSE_PIPELINE
= 0x0008,
4231 VERBOSE_DRIVER
= 0x0010,
4232 VERBOSE_STATE
= 0x0020,
4233 VERBOSE_API
= 0x0040,
4234 VERBOSE_DISPLAY_LIST
= 0x0100,
4235 VERBOSE_LIGHTING
= 0x0200,
4236 VERBOSE_PRIMS
= 0x0400,
4237 VERBOSE_VERTS
= 0x0800,
4238 VERBOSE_DISASSEM
= 0x1000,
4239 VERBOSE_DRAW
= 0x2000,
4240 VERBOSE_SWAPBUFFERS
= 0x4000
4244 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4247 DEBUG_SILENT
= (1 << 0),
4248 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4249 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4250 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4254 _mesa_active_fragment_shader_has_atomic_ops(const struct gl_context
*ctx
)
4256 return ctx
->Shader
._CurrentFragmentProgram
!= NULL
&&
4257 ctx
->Shader
._CurrentFragmentProgram
->NumAtomicBuffers
> 0;
4264 #endif /* MTYPES_H */