2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include <stdint.h> /* uint32_t */
39 #include "c11/threads.h"
41 #include "main/glheader.h"
42 #include "main/config.h"
43 #include "glapi/glapi.h"
44 #include "math/m_matrix.h" /* GLmatrix */
45 #include "compiler/shader_enums.h"
46 #include "main/formats.h" /* MESA_FORMAT_COUNT */
47 #include "compiler/glsl/list.h"
56 * \name 64-bit extension of GLbitfield.
59 typedef GLuint64 GLbitfield64
;
61 /** Set a single bit */
62 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
63 /** Set all bits up to excluding bit b */
64 #define BITFIELD64_MASK(b) \
65 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
66 /** Set count bits starting from bit b */
67 #define BITFIELD64_RANGE(b, count) \
68 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
72 * \name Some forward type declarations
75 struct _mesa_HashTable
;
76 struct gl_attrib_node
;
77 struct gl_list_extensions
;
79 struct gl_program_cache
;
80 struct gl_texture_object
;
81 struct gl_debug_state
;
84 struct gl_uniform_storage
;
85 struct prog_instruction
;
86 struct gl_program_parameter_list
;
93 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
94 #define PRIM_MAX GL_PATCHES
95 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
96 #define PRIM_UNKNOWN (PRIM_MAX + 2)
99 * Determine if the given gl_varying_slot appears in the fragment shader.
101 static inline GLboolean
102 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
105 case VARYING_SLOT_PSIZ
:
106 case VARYING_SLOT_BFC0
:
107 case VARYING_SLOT_BFC1
:
108 case VARYING_SLOT_EDGE
:
109 case VARYING_SLOT_CLIP_VERTEX
:
110 case VARYING_SLOT_LAYER
:
111 case VARYING_SLOT_TESS_LEVEL_OUTER
:
112 case VARYING_SLOT_TESS_LEVEL_INNER
:
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 GLfloat Ambient
[4]; /**< ambient color */
337 GLfloat Diffuse
[4]; /**< diffuse color */
338 GLfloat Specular
[4]; /**< specular color */
339 GLfloat EyePosition
[4]; /**< position in eye coordinates */
340 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
341 GLfloat SpotExponent
;
342 GLfloat SpotCutoff
; /**< in degrees */
343 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
344 GLfloat ConstantAttenuation
;
345 GLfloat LinearAttenuation
;
346 GLfloat QuadraticAttenuation
;
347 GLboolean Enabled
; /**< On/off flag */
350 * \name Derived fields
353 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
355 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
356 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
357 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
358 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
359 GLfloat _VP_inf_spot_attenuation
;
361 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
362 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
363 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
373 GLfloat Ambient
[4]; /**< ambient color */
374 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
375 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
376 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
377 * or GL_SEPARATE_SPECULAR_COLOR */
382 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
384 struct gl_accum_attrib
386 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
391 * Used for storing clear color, texture border color, etc.
392 * The float values are typically unclamped.
403 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
405 struct gl_colorbuffer_attrib
407 GLuint ClearIndex
; /**< Index for glClear */
408 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
409 GLuint IndexMask
; /**< Color index write mask */
410 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
412 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
415 * \name alpha testing
418 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
419 GLenum AlphaFunc
; /**< Alpha test function */
420 GLfloat AlphaRefUnclamped
;
421 GLclampf AlphaRef
; /**< Alpha reference value */
428 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
430 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
431 * control, only on the fixed-pointness of the render target.
432 * The query does however depend on fragment color clamping.
434 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
435 GLfloat BlendColor
[4]; /**< Blending color */
439 GLenum SrcRGB
; /**< RGB blend source term */
440 GLenum DstRGB
; /**< RGB blend dest term */
441 GLenum SrcA
; /**< Alpha blend source term */
442 GLenum DstA
; /**< Alpha blend dest term */
443 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
444 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
446 * Set if any blend factor uses SRC1. Computed at the time blend factors
449 GLboolean _UsesDualSrc
;
450 } Blend
[MAX_DRAW_BUFFERS
];
451 /** Are the blend func terms currently different for each buffer/target? */
452 GLboolean _BlendFuncPerBuffer
;
453 /** Are the blend equations currently different for each buffer/target? */
454 GLboolean _BlendEquationPerBuffer
;
461 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
462 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
463 GLenum LogicOp
; /**< Logic operator */
467 GLboolean DitherFlag
; /**< Dither enable flag */
469 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
470 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
471 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
473 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
478 * Current attribute group (GL_CURRENT_BIT).
480 struct gl_current_attrib
483 * \name Current vertex attributes (color, texcoords, etc).
484 * \note Values are valid only after FLUSH_VERTICES has been called.
485 * \note Index and Edgeflag current values are stored as floats in the
486 * SIX and SEVEN attribute slots.
487 * \note We need double storage for 64-bit vertex attributes
489 GLfloat Attrib
[VERT_ATTRIB_MAX
][4*2];
492 * \name Current raster position attributes (always up to date after a
495 GLfloat RasterPos
[4];
496 GLfloat RasterDistance
;
497 GLfloat RasterColor
[4];
498 GLfloat RasterSecondaryColor
[4];
499 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
500 GLboolean RasterPosValid
;
505 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
507 struct gl_depthbuffer_attrib
509 GLenum Func
; /**< Function for depth buffer compare */
510 GLclampd Clear
; /**< Value to clear depth buffer to */
511 GLboolean Test
; /**< Depth buffering enabled flag */
512 GLboolean Mask
; /**< Depth buffer writable? */
513 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
514 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
519 * Evaluator attribute group (GL_EVAL_BIT).
521 struct gl_eval_attrib
527 GLboolean Map1Color4
;
529 GLboolean Map1Normal
;
530 GLboolean Map1TextureCoord1
;
531 GLboolean Map1TextureCoord2
;
532 GLboolean Map1TextureCoord3
;
533 GLboolean Map1TextureCoord4
;
534 GLboolean Map1Vertex3
;
535 GLboolean Map1Vertex4
;
536 GLboolean Map2Color4
;
538 GLboolean Map2Normal
;
539 GLboolean Map2TextureCoord1
;
540 GLboolean Map2TextureCoord2
;
541 GLboolean Map2TextureCoord3
;
542 GLboolean Map2TextureCoord4
;
543 GLboolean Map2Vertex3
;
544 GLboolean Map2Vertex4
;
545 GLboolean AutoNormal
;
549 * \name Map Grid endpoints and divisions and calculated du values
553 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
554 GLint MapGrid2un
, MapGrid2vn
;
555 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
556 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
562 * Fog attribute group (GL_FOG_BIT).
566 GLboolean Enabled
; /**< Fog enabled flag */
567 GLboolean ColorSumEnabled
;
568 GLfloat ColorUnclamped
[4]; /**< Fog color */
569 GLfloat Color
[4]; /**< Fog color */
570 GLfloat Density
; /**< Density >= 0.0 */
571 GLfloat Start
; /**< Start distance in eye coords */
572 GLfloat End
; /**< End distance in eye coords */
573 GLfloat Index
; /**< Fog index */
574 GLenum Mode
; /**< Fog mode */
575 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
576 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
577 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
582 * Hint attribute group (GL_HINT_BIT).
584 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
586 struct gl_hint_attrib
588 GLenum PerspectiveCorrection
;
591 GLenum PolygonSmooth
;
593 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
594 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
595 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
600 * Lighting attribute group (GL_LIGHT_BIT).
602 struct gl_light_attrib
604 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
605 struct gl_lightmodel Model
; /**< Lighting model */
608 * Front and back material values.
609 * Note: must call FLUSH_VERTICES() before using.
611 struct gl_material Material
;
613 GLboolean Enabled
; /**< Lighting enabled flag */
614 GLboolean ColorMaterialEnabled
;
616 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
617 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
618 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
619 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
620 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
623 GLboolean _ClampVertexColor
;
624 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
627 * Derived state for optimizations:
630 GLbitfield _EnabledLights
; /**< bitmask containing enabled lights */
632 GLboolean _NeedEyeCoords
;
633 GLboolean _NeedVertices
; /**< Use fast shader? */
635 GLfloat _BaseColor
[2][3];
641 * Line attribute group (GL_LINE_BIT).
643 struct gl_line_attrib
645 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
646 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
647 GLushort StipplePattern
; /**< Stipple pattern */
648 GLint StippleFactor
; /**< Stipple repeat factor */
649 GLfloat Width
; /**< Line width */
654 * Display list attribute group (GL_LIST_BIT).
656 struct gl_list_attrib
663 * Multisample attribute group (GL_MULTISAMPLE_BIT).
665 struct gl_multisample_attrib
668 GLboolean SampleAlphaToCoverage
;
669 GLboolean SampleAlphaToOne
;
670 GLboolean SampleCoverage
;
671 GLboolean SampleCoverageInvert
;
672 GLboolean SampleShading
;
674 /* ARB_texture_multisample / GL3.2 additions */
675 GLboolean SampleMask
;
677 GLfloat SampleCoverageValue
;
678 GLfloat MinSampleShadingValue
;
680 /** The GL spec defines this as an array but >32x MSAA is madness */
681 GLbitfield SampleMaskValue
;
686 * A pixelmap (see glPixelMap)
691 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
696 * Collection of all pixelmaps
700 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
701 struct gl_pixelmap GtoG
;
702 struct gl_pixelmap BtoB
;
703 struct gl_pixelmap AtoA
;
704 struct gl_pixelmap ItoR
;
705 struct gl_pixelmap ItoG
;
706 struct gl_pixelmap ItoB
;
707 struct gl_pixelmap ItoA
;
708 struct gl_pixelmap ItoI
;
709 struct gl_pixelmap StoS
;
714 * Pixel attribute group (GL_PIXEL_MODE_BIT).
716 struct gl_pixel_attrib
718 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
720 /*--- Begin Pixel Transfer State ---*/
721 /* Fields are in the order in which they're applied... */
723 /** Scale & Bias (index shift, offset) */
725 GLfloat RedBias
, RedScale
;
726 GLfloat GreenBias
, GreenScale
;
727 GLfloat BlueBias
, BlueScale
;
728 GLfloat AlphaBias
, AlphaScale
;
729 GLfloat DepthBias
, DepthScale
;
730 GLint IndexShift
, IndexOffset
;
734 /* Note: actual pixel maps are not part of this attrib group */
735 GLboolean MapColorFlag
;
736 GLboolean MapStencilFlag
;
738 /*--- End Pixel Transfer State ---*/
741 GLfloat ZoomX
, ZoomY
;
746 * Point attribute group (GL_POINT_BIT).
748 struct gl_point_attrib
750 GLfloat Size
; /**< User-specified point size */
751 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
752 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
753 GLfloat Threshold
; /**< GL_EXT_point_parameters */
754 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
755 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
756 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
757 GLbitfield CoordReplace
; /**< GL_ARB_point_sprite*/
758 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
759 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
764 * Polygon attribute group (GL_POLYGON_BIT).
766 struct gl_polygon_attrib
768 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
769 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
770 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
771 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
772 GLboolean CullFlag
; /**< Culling on/off flag */
773 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
774 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
775 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
776 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
777 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
778 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
779 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
780 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
781 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
786 * Scissor attributes (GL_SCISSOR_BIT).
788 struct gl_scissor_rect
790 GLint X
, Y
; /**< Lower left corner of box */
791 GLsizei Width
, Height
; /**< Size of box */
793 struct gl_scissor_attrib
795 GLbitfield EnableFlags
; /**< Scissor test enabled? */
796 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
801 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
803 * Three sets of stencil data are tracked so that OpenGL 2.0,
804 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
805 * simultaneously. In each of the stencil state arrays, element 0 corresponds
806 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
807 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
808 * GL_EXT_stencil_two_side GL_BACK state.
810 * The derived value \c _BackFace is either 1 or 2 depending on whether or
811 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
813 * The derived value \c _TestTwoSide is set when the front-face and back-face
814 * stencil state are different.
816 struct gl_stencil_attrib
818 GLboolean Enabled
; /**< Enabled flag */
819 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
820 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
821 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
822 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
823 GLboolean _TestTwoSide
;
824 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
825 GLenum Function
[3]; /**< Stencil function */
826 GLenum FailFunc
[3]; /**< Fail function */
827 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
828 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
829 GLint Ref
[3]; /**< Reference value */
830 GLuint ValueMask
[3]; /**< Value mask */
831 GLuint WriteMask
[3]; /**< Write mask */
832 GLuint Clear
; /**< Clear value */
837 * An index for each type of texture object. These correspond to the GL
838 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
839 * Note: the order is from highest priority to lowest priority.
843 TEXTURE_2D_MULTISAMPLE_INDEX
,
844 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
845 TEXTURE_CUBE_ARRAY_INDEX
,
846 TEXTURE_BUFFER_INDEX
,
847 TEXTURE_2D_ARRAY_INDEX
,
848 TEXTURE_1D_ARRAY_INDEX
,
849 TEXTURE_EXTERNAL_INDEX
,
860 * Bit flags for each type of texture object
863 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
864 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
865 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
866 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
867 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
868 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
869 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
870 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
871 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
872 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
873 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
874 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
879 * Texture image state. Drivers will typically create a subclass of this
880 * with extra fields for memory buffers, etc.
882 struct gl_texture_image
884 GLint InternalFormat
; /**< Internal format as given by the user */
885 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
886 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
887 * GL_INTENSITY, GL_DEPTH_COMPONENT or
888 * GL_DEPTH_STENCIL_EXT only. Used for
889 * choosing TexEnv arithmetic.
891 mesa_format TexFormat
; /**< The actual texture memory format */
893 GLuint Border
; /**< 0 or 1 */
894 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
895 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
896 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
897 GLuint Width2
; /**< = Width - 2*Border */
898 GLuint Height2
; /**< = Height - 2*Border */
899 GLuint Depth2
; /**< = Depth - 2*Border */
900 GLuint WidthLog2
; /**< = log2(Width2) */
901 GLuint HeightLog2
; /**< = log2(Height2) */
902 GLuint DepthLog2
; /**< = log2(Depth2) */
903 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
904 levels, computed from the dimensions */
906 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
907 GLuint Level
; /**< Which mipmap level am I? */
908 /** Cube map face: index into gl_texture_object::Image[] array */
911 /** GL_ARB_texture_multisample */
912 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
913 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
918 * Indexes for cube map faces.
933 * Sampler object state. These objects are new with GL_ARB_sampler_objects
934 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
936 struct gl_sampler_object
941 GLchar
*Label
; /**< GL_KHR_debug */
943 GLenum WrapS
; /**< S-axis texture image wrap mode */
944 GLenum WrapT
; /**< T-axis texture image wrap mode */
945 GLenum WrapR
; /**< R-axis texture image wrap mode */
946 GLenum MinFilter
; /**< minification filter */
947 GLenum MagFilter
; /**< magnification filter */
948 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
949 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
950 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
951 GLfloat LodBias
; /**< OpenGL 1.4 */
952 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
953 GLenum CompareMode
; /**< GL_ARB_shadow */
954 GLenum CompareFunc
; /**< GL_ARB_shadow */
955 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
956 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
961 * Texture object state. Contains the array of mipmap images, border color,
962 * wrap modes, filter modes, and shadow/texcompare state.
964 struct gl_texture_object
966 mtx_t Mutex
; /**< for thread safety */
967 GLint RefCount
; /**< reference count */
968 GLuint Name
; /**< the user-visible texture object ID */
969 GLchar
*Label
; /**< GL_KHR_debug */
970 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
971 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
972 Only valid when Target is valid. */
974 struct gl_sampler_object Sampler
;
976 GLenum DepthMode
; /**< GL_ARB_depth_texture */
977 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
979 GLfloat Priority
; /**< in [0,1] */
980 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
981 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
982 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
983 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
984 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
985 GLint CropRect
[4]; /**< GL_OES_draw_texture */
986 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
987 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
988 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
989 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
990 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
991 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
992 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
993 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
995 GLboolean Immutable
; /**< GL_ARB_texture_storage */
996 GLboolean _IsFloat
; /**< GL_OES_float_texture */
997 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
999 GLuint MinLevel
; /**< GL_ARB_texture_view */
1000 GLuint MinLayer
; /**< GL_ARB_texture_view */
1001 GLuint NumLevels
; /**< GL_ARB_texture_view */
1002 GLuint NumLayers
; /**< GL_ARB_texture_view */
1004 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1005 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1007 /** GL_ARB_texture_buffer_object */
1008 struct gl_buffer_object
*BufferObject
;
1009 GLenum BufferObjectFormat
;
1010 /** Equivalent Mesa format for BufferObjectFormat. */
1011 mesa_format _BufferObjectFormat
;
1012 /** GL_ARB_texture_buffer_range */
1013 GLintptr BufferOffset
;
1014 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1016 /** GL_OES_EGL_image_external */
1017 GLint RequiredTextureImageUnits
;
1019 /** GL_ARB_shader_image_load_store */
1020 GLenum ImageFormatCompatibilityType
;
1024 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1025 #define MAX_COMBINER_TERMS 4
1029 * Texture combine environment state.
1031 struct gl_tex_env_combine_state
1033 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1034 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1035 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1036 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1037 GLenum SourceA
[MAX_COMBINER_TERMS
];
1038 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1039 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1040 GLenum OperandA
[MAX_COMBINER_TERMS
];
1041 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1042 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1043 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1044 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1049 * TexGenEnabled flags.
1056 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1061 * Bit flag versions of the corresponding GL_ constants.
1064 #define TEXGEN_SPHERE_MAP 0x1
1065 #define TEXGEN_OBJ_LINEAR 0x2
1066 #define TEXGEN_EYE_LINEAR 0x4
1067 #define TEXGEN_REFLECTION_MAP_NV 0x8
1068 #define TEXGEN_NORMAL_MAP_NV 0x10
1070 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1071 TEXGEN_REFLECTION_MAP_NV | \
1072 TEXGEN_NORMAL_MAP_NV)
1073 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1074 TEXGEN_REFLECTION_MAP_NV | \
1075 TEXGEN_NORMAL_MAP_NV | \
1081 /** Tex-gen enabled for texture unit? */
1082 #define ENABLE_TEXGEN(unit) (1 << (unit))
1084 /** Non-identity texture matrix for texture unit? */
1085 #define ENABLE_TEXMAT(unit) (1 << (unit))
1089 * Texture coord generation state.
1093 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1094 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1095 GLfloat ObjectPlane
[4];
1096 GLfloat EyePlane
[4];
1101 * Texture unit state. Contains enable flags, texture environment/function/
1102 * combiners, texgen state, and pointers to current texture objects.
1104 struct gl_texture_unit
1106 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1108 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1109 GLclampf EnvColor
[4];
1110 GLfloat EnvColorUnclamped
[4];
1112 struct gl_texgen GenS
;
1113 struct gl_texgen GenT
;
1114 struct gl_texgen GenR
;
1115 struct gl_texgen GenQ
;
1116 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1117 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1119 GLfloat LodBias
; /**< for biasing mipmap levels */
1121 /** Texture targets that have a non-default texture bound */
1122 GLbitfield _BoundTextures
;
1124 /** Current sampler object (GL_ARB_sampler_objects) */
1125 struct gl_sampler_object
*Sampler
;
1128 * \name GL_EXT_texture_env_combine
1130 struct gl_tex_env_combine_state Combine
;
1133 * Derived state based on \c EnvMode and the \c BaseFormat of the
1134 * currently enabled texture.
1136 struct gl_tex_env_combine_state _EnvMode
;
1139 * Currently enabled combiner state. This will point to either
1140 * \c Combine or \c _EnvMode.
1142 struct gl_tex_env_combine_state
*_CurrentCombine
;
1144 /** Current texture object pointers */
1145 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1147 /** Points to highest priority, complete and enabled texture object */
1148 struct gl_texture_object
*_Current
;
1154 * Texture attribute group (GL_TEXTURE_BIT).
1156 struct gl_texture_attrib
1158 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1160 /** GL_ARB_seamless_cubemap */
1161 GLboolean CubeMapSeamless
;
1163 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1165 /** GL_ARB_texture_buffer_object */
1166 struct gl_buffer_object
*BufferObject
;
1168 /** Texture coord units/sets used for fragment texturing */
1169 GLbitfield _EnabledCoordUnits
;
1171 /** Texture coord units that have texgen enabled */
1172 GLbitfield _TexGenEnabled
;
1174 /** Texture coord units that have non-identity matrices */
1175 GLbitfield _TexMatEnabled
;
1177 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1178 GLbitfield _GenFlags
;
1180 /** Largest index of a texture unit with _Current != NULL. */
1181 GLint _MaxEnabledTexImageUnit
;
1183 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1184 GLint NumCurrentTexUsed
;
1186 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1191 * Data structure representing a single clip plane (e.g. one of the elements
1192 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1194 typedef GLfloat gl_clip_plane
[4];
1198 * Transformation attribute group (GL_TRANSFORM_BIT).
1200 struct gl_transform_attrib
1202 GLenum MatrixMode
; /**< Matrix mode */
1203 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1204 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1205 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1206 GLboolean Normalize
; /**< Normalize all normals? */
1207 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1208 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1209 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1210 /** GL_ARB_clip_control */
1211 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1212 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1217 * Viewport attribute group (GL_VIEWPORT_BIT).
1219 struct gl_viewport_attrib
1221 GLfloat X
, Y
; /**< position */
1222 GLfloat Width
, Height
; /**< size */
1223 GLdouble Near
, Far
; /**< Depth buffer range */
1232 } gl_map_buffer_index
;
1236 * Fields describing a mapped buffer range.
1238 struct gl_buffer_mapping
{
1239 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1240 GLvoid
*Pointer
; /**< User-space address of mapping */
1241 GLintptr Offset
; /**< Mapped offset */
1242 GLsizeiptr Length
; /**< Mapped length */
1247 * Usages we've seen for a buffer object.
1250 USAGE_UNIFORM_BUFFER
= 0x1,
1251 USAGE_TEXTURE_BUFFER
= 0x2,
1252 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1253 USAGE_SHADER_STORAGE_BUFFER
= 0x8,
1254 USAGE_TRANSFORM_FEEDBACK_BUFFER
= 0x10,
1255 USAGE_PIXEL_PACK_BUFFER
= 0x20,
1256 USAGE_DISABLE_MINMAX_CACHE
= 0x40,
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 /** Counters used for buffer usage warnings */
1280 GLuint NumSubDataCalls
;
1281 GLuint NumMapBufferWriteCalls
;
1283 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1285 /** Memoization of min/max index computations for static index buffers */
1286 struct hash_table
*MinMaxCache
;
1287 unsigned MinMaxCacheHitIndices
;
1288 unsigned MinMaxCacheMissIndices
;
1289 bool MinMaxCacheDirty
;
1294 * Client pixel packing/unpacking attributes
1296 struct gl_pixelstore_attrib
1304 GLboolean SwapBytes
;
1306 GLboolean Invert
; /**< GL_MESA_pack_invert */
1307 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1308 GLint CompressedBlockHeight
;
1309 GLint CompressedBlockDepth
;
1310 GLint CompressedBlockSize
;
1311 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1316 * Client vertex array attributes
1318 struct gl_client_array
1320 GLint Size
; /**< components per element (1,2,3,4) */
1321 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1322 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1323 GLsizei Stride
; /**< user-specified stride */
1324 GLsizei StrideB
; /**< actual stride in bytes */
1325 GLuint _ElementSize
; /**< size of each element in bytes */
1326 const GLubyte
*Ptr
; /**< Points to array data */
1327 GLboolean Enabled
; /**< Enabled flag is a boolean */
1328 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1329 GLboolean Integer
; /**< Integer-valued? */
1330 GLboolean Doubles
; /**< double precision values are not converted to floats */
1331 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1333 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1338 * Vertex attribute array as seen by the client.
1340 * Contains the size, type, format and normalization flag,
1341 * along with the index of a vertex buffer binding point.
1343 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1344 * and is only present for backwards compatibility reasons.
1345 * Rendering always uses VERTEX_BINDING_STRIDE.
1346 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1347 * and VERTEX_BINDING_STRIDE to the same value, while
1348 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1350 struct gl_vertex_attrib_array
1352 GLint Size
; /**< Components per element (1,2,3,4) */
1353 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1354 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1355 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1356 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1357 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1358 GLboolean Enabled
; /**< Whether the array is enabled */
1359 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1360 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1361 GLboolean Doubles
; /**< double precision values are not converted to floats */
1362 GLuint _ElementSize
; /**< Size of each element in bytes */
1363 GLuint VertexBinding
; /**< Vertex buffer binding */
1368 * This describes the buffer object used for a vertex array (or
1369 * multiple vertex arrays). If BufferObj points to the default/null
1370 * buffer object, then the vertex array lives in user memory and not a VBO.
1372 struct gl_vertex_buffer_binding
1374 GLintptr Offset
; /**< User-specified offset */
1375 GLsizei Stride
; /**< User-specified stride */
1376 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1377 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1378 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1383 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1384 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1387 struct gl_vertex_array_object
1389 /** Name of the VAO as received from glGenVertexArray. */
1394 GLchar
*Label
; /**< GL_KHR_debug */
1399 * Does the VAO use ARB semantics or Apple semantics?
1401 * There are several ways in which ARB_vertex_array_object and
1402 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1405 * - ARB VAOs require that all array data be sourced from vertex buffer
1406 * objects, but Apple VAOs do not.
1408 * - ARB VAOs require that names come from GenVertexArrays.
1410 * This flag notes which behavior governs this VAO.
1412 GLboolean ARBsemantics
;
1415 * Has this array object been bound?
1417 GLboolean EverBound
;
1420 * Derived vertex attribute arrays
1422 * This is a legacy data structure created from gl_vertex_attrib_array and
1423 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1425 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1427 /** Vertex attribute arrays */
1428 struct gl_vertex_attrib_array VertexAttrib
[VERT_ATTRIB_MAX
];
1430 /** Vertex buffer bindings */
1431 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1433 /** Mask indicating which vertex arrays have vertex buffer associated. */
1434 GLbitfield64 VertexAttribBufferMask
;
1436 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1437 GLbitfield64 _Enabled
;
1439 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1440 GLbitfield64 NewArrays
;
1442 /** The index buffer (also known as the element array buffer in OpenGL). */
1443 struct gl_buffer_object
*IndexBufferObj
;
1447 /** Used to signal when transitioning from one kind of drawing method
1451 DRAW_NONE
, /**< Initial value only */
1458 * Enum for the OpenGL APIs we know about and may support.
1460 * NOTE: This must match the api_enum table in
1461 * src/mesa/main/get_hash_generator.py
1465 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1469 API_OPENGL_LAST
= API_OPENGL_CORE
1473 * Vertex array state
1475 struct gl_array_attrib
1477 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1478 struct gl_vertex_array_object
*VAO
;
1480 /** The default vertex array object */
1481 struct gl_vertex_array_object
*DefaultVAO
;
1483 /** The last VAO accessed by a DSA function */
1484 struct gl_vertex_array_object
*LastLookedUpVAO
;
1486 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1487 struct _mesa_HashTable
*Objects
;
1489 GLint ActiveTexture
; /**< Client Active Texture */
1490 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1491 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1494 * \name Primitive restart controls
1496 * Primitive restart is enabled if either \c PrimitiveRestart or
1497 * \c PrimitiveRestartFixedIndex is set.
1500 GLboolean PrimitiveRestart
;
1501 GLboolean PrimitiveRestartFixedIndex
;
1502 GLboolean _PrimitiveRestart
;
1503 GLuint RestartIndex
;
1506 /** One of the DRAW_xxx flags, not consumed by drivers */
1507 gl_draw_method DrawMethod
;
1509 /* GL_ARB_vertex_buffer_object */
1510 struct gl_buffer_object
*ArrayBufferObj
;
1513 * Vertex arrays as consumed by a driver.
1514 * The array pointer is set up only by the VBO module.
1516 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1518 /** Legal array datatypes and the API for which they have been computed */
1519 GLbitfield LegalTypesMask
;
1520 gl_api LegalTypesMaskAPI
;
1525 * Feedback buffer state
1530 GLbitfield _Mask
; /**< FB_* bits */
1538 * Selection buffer state
1542 GLuint
*Buffer
; /**< selection buffer */
1543 GLuint BufferSize
; /**< size of the selection buffer */
1544 GLuint BufferCount
; /**< number of values in the selection buffer */
1545 GLuint Hits
; /**< number of records in the selection buffer */
1546 GLuint NameStackDepth
; /**< name stack depth */
1547 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1548 GLboolean HitFlag
; /**< hit flag */
1549 GLfloat HitMinZ
; /**< minimum hit depth */
1550 GLfloat HitMaxZ
; /**< maximum hit depth */
1555 * 1-D Evaluator control points
1559 GLuint Order
; /**< Number of control points */
1560 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1561 GLfloat
*Points
; /**< Points to contiguous control points */
1566 * 2-D Evaluator control points
1570 GLuint Uorder
; /**< Number of control points in U dimension */
1571 GLuint Vorder
; /**< Number of control points in V dimension */
1574 GLfloat
*Points
; /**< Points to contiguous control points */
1579 * All evaluator control point state
1581 struct gl_evaluators
1587 struct gl_1d_map Map1Vertex3
;
1588 struct gl_1d_map Map1Vertex4
;
1589 struct gl_1d_map Map1Index
;
1590 struct gl_1d_map Map1Color4
;
1591 struct gl_1d_map Map1Normal
;
1592 struct gl_1d_map Map1Texture1
;
1593 struct gl_1d_map Map1Texture2
;
1594 struct gl_1d_map Map1Texture3
;
1595 struct gl_1d_map Map1Texture4
;
1602 struct gl_2d_map Map2Vertex3
;
1603 struct gl_2d_map Map2Vertex4
;
1604 struct gl_2d_map Map2Index
;
1605 struct gl_2d_map Map2Color4
;
1606 struct gl_2d_map Map2Normal
;
1607 struct gl_2d_map Map2Texture1
;
1608 struct gl_2d_map Map2Texture2
;
1609 struct gl_2d_map Map2Texture3
;
1610 struct gl_2d_map Map2Texture4
;
1615 struct gl_transform_feedback_varying_info
1626 * Per-output info vertex shaders for transform feedback.
1628 struct gl_transform_feedback_output
1630 unsigned OutputRegister
;
1631 unsigned OutputBuffer
;
1632 unsigned NumComponents
;
1635 /** offset (in DWORDs) of this output within the interleaved structure */
1639 * Offset into the output register of the data to output. For example,
1640 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1641 * offset is in the y and z components of the output register.
1643 unsigned ComponentOffset
;
1647 struct gl_transform_feedback_buffer
1651 unsigned NumVaryings
;
1654 * Total number of components stored in each buffer. This may be used by
1655 * hardware back-ends to determine the correct stride when interleaving
1656 * multiple transform feedback outputs in the same buffer.
1661 * Which transform feedback stream this buffer binding is associated with.
1667 /** Post-link transform feedback info. */
1668 struct gl_transform_feedback_info
1670 unsigned NumOutputs
;
1672 /* Bitmask of active buffer indices. */
1673 unsigned ActiveBuffers
;
1675 struct gl_transform_feedback_output
*Outputs
;
1677 /** Transform feedback varyings used for the linking of this shader program.
1679 * Use for glGetTransformFeedbackVarying().
1681 struct gl_transform_feedback_varying_info
*Varyings
;
1684 struct gl_transform_feedback_buffer Buffers
[MAX_FEEDBACK_BUFFERS
];
1689 * Transform feedback object state
1691 struct gl_transform_feedback_object
1693 GLuint Name
; /**< AKA the object ID */
1695 GLchar
*Label
; /**< GL_KHR_debug */
1696 GLboolean Active
; /**< Is transform feedback enabled? */
1697 GLboolean Paused
; /**< Is transform feedback paused? */
1698 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1700 GLboolean EverBound
; /**< Has this object been bound? */
1703 * GLES: if Active is true, remaining number of primitives which can be
1704 * rendered without overflow. This is necessary to track because GLES
1705 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1706 * glDrawArraysInstanced would overflow transform feedback buffers.
1707 * Undefined if Active is false.
1709 * Not tracked for desktop GL since it's unnecessary.
1711 unsigned GlesRemainingPrims
;
1714 * The shader program active when BeginTransformFeedback() was called.
1715 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1716 * where stage is the pipeline stage that is the source of data for
1717 * transform feedback.
1719 struct gl_shader_program
*shader_program
;
1721 /** The feedback buffers */
1722 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1723 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1725 /** Start of feedback data in dest buffer */
1726 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1729 * Max data to put into dest buffer (in bytes). Computed based on
1730 * RequestedSize and the actual size of the buffer.
1732 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1735 * Size that was specified when the buffer was bound. If the buffer was
1736 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1739 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1744 * Context state for transform feedback.
1746 struct gl_transform_feedback_state
1748 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1750 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1751 struct gl_buffer_object
*CurrentBuffer
;
1753 /** The table of all transform feedback objects */
1754 struct _mesa_HashTable
*Objects
;
1756 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1757 struct gl_transform_feedback_object
*CurrentObject
;
1759 /** The default xform-fb object (Name==0) */
1760 struct gl_transform_feedback_object
*DefaultObject
;
1765 * A "performance monitor" as described in AMD_performance_monitor.
1767 struct gl_perf_monitor_object
1771 /** True if the monitor is currently active (Begin called but not End). */
1775 * True if the monitor has ended.
1777 * This is distinct from !Active because it may never have began.
1782 * A list of groups with currently active counters.
1784 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1786 unsigned *ActiveGroups
;
1789 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1791 * Checking whether counter 'c' in group 'g' is active can be done via:
1793 * BITSET_TEST(ActiveCounters[g], c)
1795 GLuint
**ActiveCounters
;
1799 union gl_perf_monitor_counter_value
1807 struct gl_perf_monitor_counter
1809 /** Human readable name for the counter. */
1813 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1814 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1818 /** Minimum counter value. */
1819 union gl_perf_monitor_counter_value Minimum
;
1821 /** Maximum counter value. */
1822 union gl_perf_monitor_counter_value Maximum
;
1826 struct gl_perf_monitor_group
1828 /** Human readable name for the group. */
1832 * Maximum number of counters in this group which can be active at the
1835 GLuint MaxActiveCounters
;
1837 /** Array of counters within this group. */
1838 const struct gl_perf_monitor_counter
*Counters
;
1844 * Context state for AMD_performance_monitor.
1846 struct gl_perf_monitor_state
1848 /** Array of performance monitor groups (indexed by group ID) */
1849 const struct gl_perf_monitor_group
*Groups
;
1852 /** The table of all performance monitors. */
1853 struct _mesa_HashTable
*Monitors
;
1858 * Names of the various vertex/fragment program register files, etc.
1860 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1861 * All values should fit in a 4-bit field.
1863 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1864 * considered to be "uniform" variables since they can only be set outside
1865 * glBegin/End. They're also all stored in the same Parameters array.
1869 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1870 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1871 PROGRAM_INPUT
, /**< machine->Inputs[] */
1872 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1873 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1874 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1875 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1876 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1877 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1878 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1879 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1880 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1881 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
1882 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
1883 PROGRAM_MEMORY
, /**< for shared, global and local memory */
1884 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
1890 * Base class for any kind of program object
1897 GLubyte
*String
; /**< Null-terminated program text */
1899 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1900 GLenum Format
; /**< String encoding format */
1902 struct prog_instruction
*Instructions
;
1904 struct nir_shader
*nir
;
1906 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1907 GLbitfield64 DoubleInputsRead
; /**< Bitmask of which input regs are read and are doubles */
1908 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1909 GLbitfield PatchInputsRead
; /**< VAR[0..31] usage for patch inputs (user-defined only) */
1910 GLbitfield PatchOutputsWritten
; /**< VAR[0..31] usage for patch outputs (user-defined only) */
1911 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1912 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1913 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1914 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1916 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
1919 * For vertex and geometry shaders, true if the program uses the
1920 * gl_ClipDistance output. Ignored for fragment shaders.
1922 unsigned ClipDistanceArraySize
;
1923 unsigned CullDistanceArraySize
;
1926 /** Named parameters, constants, etc. from program text */
1927 struct gl_program_parameter_list
*Parameters
;
1930 * Local parameters used by the program.
1932 * It's dynamically allocated because it is rarely used (just
1933 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
1936 GLfloat (*LocalParams
)[4];
1938 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1939 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1941 /** Bitmask of which register files are read/written with indirect
1942 * addressing. Mask of (1 << PROGRAM_x) bits.
1944 GLbitfield IndirectRegisterFiles
;
1946 /** Logical counts */
1948 GLuint NumInstructions
;
1949 GLuint NumTemporaries
;
1950 GLuint NumParameters
;
1951 GLuint NumAttributes
;
1952 GLuint NumAddressRegs
;
1953 GLuint NumAluInstructions
;
1954 GLuint NumTexInstructions
;
1955 GLuint NumTexIndirections
;
1957 /** Native, actual h/w counts */
1959 GLuint NumNativeInstructions
;
1960 GLuint NumNativeTemporaries
;
1961 GLuint NumNativeParameters
;
1962 GLuint NumNativeAttributes
;
1963 GLuint NumNativeAddressRegs
;
1964 GLuint NumNativeAluInstructions
;
1965 GLuint NumNativeTexInstructions
;
1966 GLuint NumNativeTexIndirections
;
1971 /** Vertex program object */
1972 struct gl_vertex_program
1974 struct gl_program Base
; /**< base class */
1975 GLboolean IsPositionInvariant
;
1979 /** Tessellation control program object */
1980 struct gl_tess_ctrl_program
1982 struct gl_program Base
; /**< base class */
1989 /** Tessellation evaluation program object */
1990 struct gl_tess_eval_program
1992 struct gl_program Base
; /**< base class */
1995 GLenum PrimitiveMode
; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
1996 GLenum Spacing
; /* GL_EQUAL, GL_FRACTIONAL_EVEN, GL_FRACTIONAL_ODD */
1997 GLenum VertexOrder
; /* GL_CW or GL_CCW */
2002 /** Geometry program object */
2003 struct gl_geometry_program
2005 struct gl_program Base
; /**< base class */
2010 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2011 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2012 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2013 bool UsesEndPrimitive
;
2018 /** Fragment program object */
2019 struct gl_fragment_program
2021 struct gl_program Base
; /**< base class */
2022 GLboolean UsesKill
; /**< shader uses KIL instruction */
2023 GLboolean UsesDFdy
; /**< shader uses DDY instruction */
2024 GLboolean OriginUpperLeft
;
2025 GLboolean PixelCenterInteger
;
2026 enum gl_frag_depth_layout FragDepthLayout
;
2029 * GLSL interpolation qualifier associated with each fragment shader input.
2030 * For inputs that do not have an interpolation qualifier specified in
2031 * GLSL, the value is INTERP_QUALIFIER_NONE.
2033 enum glsl_interp_qualifier InterpQualifier
[VARYING_SLOT_MAX
];
2036 * Bitfield indicating, for each fragment shader input, 1 if that input
2037 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2039 GLbitfield64 IsCentroid
;
2042 * Bitfield indicating, for each fragment shader input, 1 if that input
2043 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2045 GLbitfield64 IsSample
;
2049 /** Compute program object */
2050 struct gl_compute_program
2052 struct gl_program Base
; /**< base class */
2055 * Size specified using local_size_{x,y,z}.
2057 unsigned LocalSize
[3];
2060 * Size of shared variables accessed by the compute shader.
2062 unsigned SharedSize
;
2067 * State common to vertex and fragment programs.
2069 struct gl_program_state
2071 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2072 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2077 * Context state for vertex programs.
2079 struct gl_vertex_program_state
2081 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2082 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2083 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2084 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2085 /** Computed two sided lighting for fixed function/programs. */
2086 GLboolean _TwoSideEnabled
;
2087 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2089 /** Currently enabled and valid vertex program (including internal
2090 * programs, user-defined vertex programs and GLSL vertex shaders).
2091 * This is the program we must use when rendering.
2093 struct gl_vertex_program
*_Current
;
2095 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2097 /** Should fixed-function T&L be implemented with a vertex prog? */
2098 GLboolean _MaintainTnlProgram
;
2100 /** Program to emulate fixed-function T&L (see above) */
2101 struct gl_vertex_program
*_TnlProgram
;
2103 /** Cache of fixed-function programs */
2104 struct gl_program_cache
*Cache
;
2106 GLboolean _Overriden
;
2110 * Context state for tessellation control programs.
2112 struct gl_tess_ctrl_program_state
2114 /** Currently bound and valid shader. */
2115 struct gl_tess_ctrl_program
*_Current
;
2117 GLint patch_vertices
;
2118 GLfloat patch_default_outer_level
[4];
2119 GLfloat patch_default_inner_level
[2];
2123 * Context state for tessellation evaluation programs.
2125 struct gl_tess_eval_program_state
2127 /** Currently bound and valid shader. */
2128 struct gl_tess_eval_program
*_Current
;
2132 * Context state for geometry programs.
2134 struct gl_geometry_program_state
2136 /** Currently enabled and valid program (including internal programs
2137 * and compiled shader programs).
2139 struct gl_geometry_program
*_Current
;
2143 * Context state for fragment programs.
2145 struct gl_fragment_program_state
2147 GLboolean Enabled
; /**< User-set fragment program enable flag */
2148 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2149 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2151 /** Currently enabled and valid fragment program (including internal
2152 * programs, user-defined fragment programs and GLSL fragment shaders).
2153 * This is the program we must use when rendering.
2155 struct gl_fragment_program
*_Current
;
2157 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2159 /** Should fixed-function texturing be implemented with a fragment prog? */
2160 GLboolean _MaintainTexEnvProgram
;
2162 /** Program to emulate fixed-function texture env/combine (see above) */
2163 struct gl_fragment_program
*_TexEnvProgram
;
2165 /** Cache of fixed-function programs */
2166 struct gl_program_cache
*Cache
;
2171 * Context state for compute programs.
2173 struct gl_compute_program_state
2175 /** Currently enabled and valid program (including internal programs
2176 * and compiled shader programs).
2178 struct gl_compute_program
*_Current
;
2183 * ATI_fragment_shader runtime state
2186 struct atifs_instruction
;
2187 struct atifs_setupinst
;
2190 * ATI fragment shader
2192 struct ati_fragment_shader
2196 struct atifs_instruction
*Instructions
[2];
2197 struct atifs_setupinst
*SetupInst
[2];
2198 GLfloat Constants
[8][4];
2199 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2200 GLubyte numArithInstr
[2];
2201 GLubyte regsAssigned
[2];
2202 GLubyte NumPasses
; /**< 1 or 2 */
2204 GLubyte last_optype
;
2205 GLboolean interpinp1
;
2208 struct gl_program
*Program
;
2212 * Context state for GL_ATI_fragment_shader
2214 struct gl_ati_fragment_shader_state
2217 GLboolean _Enabled
; /**< enabled and valid shader? */
2218 GLboolean Compiling
;
2219 GLfloat GlobalConstants
[8][4];
2220 struct ati_fragment_shader
*Current
;
2224 * Shader subroutine function definition
2226 struct gl_subroutine_function
2230 int num_compat_types
;
2231 const struct glsl_type
**types
;
2235 * A GLSL vertex or fragment shader object.
2239 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2240 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2241 * Must be the first field.
2244 gl_shader_stage Stage
;
2245 GLuint Name
; /**< AKA the handle */
2246 GLint RefCount
; /**< Reference count */
2247 GLchar
*Label
; /**< GL_KHR_debug */
2248 GLboolean DeletePending
;
2249 GLboolean CompileStatus
;
2250 bool IsES
; /**< True if this shader uses GLSL ES */
2252 GLuint SourceChecksum
; /**< for debug/logging purposes */
2253 const GLchar
*Source
; /**< Source code string */
2255 struct gl_program
*Program
; /**< Post-compile assembly code */
2258 unsigned Version
; /**< GLSL version used for linking */
2261 * \name Sampler tracking
2263 * \note Each of these fields is only set post-linking.
2266 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2267 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2268 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2272 * Map from sampler unit to texture unit (set by glUniform1i())
2274 * A sampler unit is associated with each sampler uniform by the linker.
2275 * The sampler unit associated with each uniform is stored in the
2276 * \c gl_uniform_storage::sampler field.
2278 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2279 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2280 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2283 * Number of default uniform block components used by this shader.
2285 * This field is only set post-linking.
2287 unsigned num_uniform_components
;
2290 * Number of combined uniform components used by this shader.
2292 * This field is only set post-linking. It is the sum of the uniform block
2293 * sizes divided by sizeof(float), and num_uniform_compoennts.
2295 unsigned num_combined_uniform_components
;
2297 unsigned NumUniformBlocks
;
2298 struct gl_uniform_block
**UniformBlocks
;
2300 unsigned NumShaderStorageBlocks
;
2301 struct gl_uniform_block
**ShaderStorageBlocks
;
2303 struct exec_list
*ir
;
2304 struct exec_list
*packed_varyings
;
2305 struct exec_list
*fragdata_arrays
;
2306 struct glsl_symbol_table
*symbols
;
2308 bool uses_builtin_functions
;
2309 bool uses_gl_fragcoord
;
2310 bool redeclares_gl_fragcoord
;
2311 bool ARB_fragment_coord_conventions_enable
;
2314 * Fragment shader state from GLSL 1.50 layout qualifiers.
2316 bool origin_upper_left
;
2317 bool pixel_center_integer
;
2320 /** Global xfb_stride out qualifier if any */
2321 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2322 } TransformFeedback
;
2325 * Tessellation Control shader state from layout qualifiers.
2329 * 0 - vertices not declared in shader, or
2330 * 1 .. GL_MAX_PATCH_VERTICES
2336 * Tessellation Evaluation shader state from layout qualifiers.
2340 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2343 GLenum PrimitiveMode
;
2345 * GL_EQUAL, GL_FRACTIONAL_ODD, GL_FRACTIONAL_EVEN, or 0 if it's not set
2350 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2354 * 1, 0, or -1 if it's not set in this shader.
2360 * Geometry shader state from GLSL 1.50 layout qualifiers.
2365 * 0 - Invocations count not declared in shader, or
2366 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2370 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2371 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2376 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2377 * it's not set in this shader.
2383 * Map from image uniform index to image unit (set by glUniform1i())
2385 * An image uniform index is associated with each image uniform by
2386 * the linker. The image index associated with each uniform is
2387 * stored in the \c gl_uniform_storage::image field.
2389 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2392 * Access qualifier specified in the shader for each image uniform
2393 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2396 * It may be different, though only more strict than the value of
2397 * \c gl_image_unit::Access for the corresponding image unit.
2399 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2402 * Number of image uniforms defined in the shader. It specifies
2403 * the number of valid elements in the \c ImageUnits and \c
2404 * ImageAccess arrays above.
2408 struct gl_active_atomic_buffer
**AtomicBuffers
;
2409 unsigned NumAtomicBuffers
;
2412 * Whether early fragment tests are enabled as defined by
2413 * ARB_shader_image_load_store.
2415 bool EarlyFragmentTests
;
2418 * Compute shader state from ARB_compute_shader layout qualifiers.
2422 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2423 * it's not set in this shader.
2425 unsigned LocalSize
[3];
2429 * Number of types for subroutine uniforms.
2431 GLuint NumSubroutineUniformTypes
;
2434 * Subroutine uniform remap table
2435 * based on the program level uniform remap table.
2437 GLuint NumSubroutineUniforms
; /* non-sparse total */
2438 GLuint NumSubroutineUniformRemapTable
;
2439 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
2442 * Num of subroutine functions for this stage
2443 * and storage for them.
2445 GLuint NumSubroutineFunctions
;
2446 GLuint MaxSubroutineFunctionIndex
;
2447 struct gl_subroutine_function
*SubroutineFunctions
;
2451 struct gl_uniform_buffer_variable
2456 * Name of the uniform as seen by glGetUniformIndices.
2458 * glGetUniformIndices requires that the block instance index \b not be
2459 * present in the name of queried uniforms.
2462 * \c gl_uniform_buffer_variable::IndexName and
2463 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2467 const struct glsl_type
*Type
;
2468 unsigned int Offset
;
2473 enum gl_uniform_block_packing
2482 struct gl_uniform_block
2484 /** Declared name of the uniform block */
2487 /** Array of supplemental information about UBO ir_variables. */
2488 struct gl_uniform_buffer_variable
*Uniforms
;
2492 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2493 * with glBindBufferBase to bind a buffer object to this uniform block. When
2494 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2499 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2500 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2502 GLuint UniformBufferSize
;
2504 /** Stages that reference this block */
2508 * Layout specified in the shader
2510 * This isn't accessible through the API, but it is used while
2511 * cross-validating uniform blocks.
2513 enum gl_uniform_block_packing _Packing
;
2517 * Structure that represents a reference to an atomic buffer from some
2520 struct gl_active_atomic_buffer
2522 /** Uniform indices of the atomic counters declared within it. */
2526 /** Binding point index associated with it. */
2529 /** Minimum reasonable size it is expected to have. */
2532 /** Shader stages making use of it. */
2533 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2537 * Data container for shader queries. This holds only the minimal
2538 * amount of required information for resource queries to work.
2540 struct gl_shader_variable
2543 * Declared type of the variable
2545 const struct glsl_type
*type
;
2548 * If the variable is in an interface block, this is the type of the block.
2550 const struct glsl_type
*interface_type
;
2553 * For variables inside structs (possibly recursively), this is the
2554 * outermost struct type.
2556 const struct glsl_type
*outermost_struct_type
;
2559 * Declared name of the variable
2564 * Storage location of the base of this variable
2566 * The precise meaning of this field depends on the nature of the variable.
2568 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2569 * - Vertex shader output: one of the values from \c gl_varying_slot.
2570 * - Geometry shader input: one of the values from \c gl_varying_slot.
2571 * - Geometry shader output: one of the values from \c gl_varying_slot.
2572 * - Fragment shader input: one of the values from \c gl_varying_slot.
2573 * - Fragment shader output: one of the values from \c gl_frag_result.
2574 * - Uniforms: Per-stage uniform slot number for default uniform block.
2575 * - Uniforms: Index within the uniform block definition for UBO members.
2576 * - Non-UBO Uniforms: explicit location until linking then reused to
2577 * store uniform slot number.
2578 * - Other: This field is not currently used.
2580 * If the variable is a uniform, shader input, or shader output, and the
2581 * slot has not been assigned, the value will be -1.
2586 * Specifies the first component the variable is stored in as per
2587 * ARB_enhanced_layouts.
2589 unsigned component
:2;
2592 * Output index for dual source blending.
2595 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2601 * Specifies whether a shader input/output is per-patch in tessellation
2607 * Storage class of the variable.
2609 * \sa (n)ir_variable_mode
2614 * Interpolation mode for shader inputs / outputs
2616 * \sa ir_variable_interpolation
2618 unsigned interpolation
:2;
2621 * Was the location explicitly set in the shader?
2623 * If the location is explicitly set in the shader, it \b cannot be changed
2624 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2627 unsigned explicit_location
:1;
2630 * Precision qualifier.
2632 unsigned precision
:2;
2636 * Active resource in a gl_shader_program
2638 struct gl_program_resource
2640 GLenum Type
; /** Program interface type. */
2641 const void *Data
; /** Pointer to resource associated data structure. */
2642 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2646 * A GLSL program object.
2647 * Basically a linked collection of vertex and fragment shaders.
2649 struct gl_shader_program
2651 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2652 GLuint Name
; /**< aka handle or ID */
2653 GLchar
*Label
; /**< GL_KHR_debug */
2654 GLint RefCount
; /**< Reference count */
2655 GLboolean DeletePending
;
2658 * Is the application intending to glGetProgramBinary this program?
2660 GLboolean BinaryRetreivableHint
;
2663 * Indicates whether program can be bound for individual pipeline stages
2664 * using UseProgramStages after it is next linked.
2666 GLboolean SeparateShader
;
2668 GLuint NumShaders
; /**< number of attached shaders */
2669 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2672 * User-defined attribute bindings
2674 * These are set via \c glBindAttribLocation and are used to direct the
2675 * GLSL linker. These are \b not the values used in the compiled shader,
2676 * and they are \b not the values returned by \c glGetAttribLocation.
2678 struct string_to_uint_map
*AttributeBindings
;
2681 * User-defined fragment data bindings
2683 * These are set via \c glBindFragDataLocation and are used to direct the
2684 * GLSL linker. These are \b not the values used in the compiled shader,
2685 * and they are \b not the values returned by \c glGetFragDataLocation.
2687 struct string_to_uint_map
*FragDataBindings
;
2688 struct string_to_uint_map
*FragDataIndexBindings
;
2691 * Transform feedback varyings last specified by
2692 * glTransformFeedbackVaryings().
2694 * For the current set of transform feedback varyings used for transform
2695 * feedback output, see LinkedTransformFeedback.
2699 /** Global xfb_stride out qualifier if any */
2700 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2702 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2703 } TransformFeedback
;
2705 /** Post-link transform feedback info. */
2706 struct gl_transform_feedback_info LinkedTransformFeedback
;
2708 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2709 enum gl_frag_depth_layout FragDepthLayout
;
2712 * Tessellation Control shader state from layout qualifiers.
2716 * 0 - vertices not declared in shader, or
2717 * 1 .. GL_MAX_PATCH_VERTICES
2723 * Tessellation Evaluation shader state from layout qualifiers.
2726 /** GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
2727 GLenum PrimitiveMode
;
2728 /** GL_EQUAL, GL_FRACTIONAL_ODD or GL_FRACTIONAL_EVEN */
2730 /** GL_CW or GL_CCW */
2734 * True if gl_ClipDistance is written to. Copied into
2735 * gl_tess_eval_program by _mesa_copy_linked_program_data().
2737 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2738 0 if not present. */
2739 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2740 0 if not present. */
2744 * Geometry shader state - copied into gl_geometry_program by
2745 * _mesa_copy_linked_program_data().
2751 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2754 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2755 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2756 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2758 * True if gl_ClipDistance is written to. Copied into
2759 * gl_geometry_program by _mesa_copy_linked_program_data().
2761 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2762 0 if not present. */
2763 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2764 0 if not present. */
2765 bool UsesEndPrimitive
;
2769 /** Vertex shader state */
2772 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2773 * by _mesa_copy_linked_program_data().
2775 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2776 0 if not present. */
2777 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2778 0 if not present. */
2782 * Compute shader state - copied into gl_compute_program by
2783 * _mesa_copy_linked_program_data().
2787 * If this shader contains a compute stage, size specified using
2788 * local_size_{x,y,z}. Otherwise undefined.
2790 unsigned LocalSize
[3];
2792 * Size of shared variables accessed by the compute shader.
2794 unsigned SharedSize
;
2797 /* post-link info: */
2798 unsigned NumUniformStorage
;
2799 unsigned NumHiddenUniforms
;
2800 struct gl_uniform_storage
*UniformStorage
;
2803 * Mapping from GL uniform locations returned by \c glUniformLocation to
2804 * UniformStorage entries. Arrays will have multiple contiguous slots
2805 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2807 unsigned NumUniformRemapTable
;
2808 struct gl_uniform_storage
**UniformRemapTable
;
2811 * Sometimes there are empty slots left over in UniformRemapTable after we
2812 * allocate slots to explicit locations. This list stores the blocks of
2813 * continuous empty slots inside UniformRemapTable.
2815 struct exec_list EmptyUniformLocations
;
2818 * Size of the gl_ClipDistance array that is output from the last pipeline
2819 * stage before the fragment shader.
2821 unsigned LastClipDistanceArraySize
;
2822 unsigned LastCullDistanceArraySize
;
2824 unsigned NumUniformBlocks
;
2825 struct gl_uniform_block
*UniformBlocks
;
2827 unsigned NumShaderStorageBlocks
;
2828 struct gl_uniform_block
*ShaderStorageBlocks
;
2831 * Map of active uniform names to locations
2833 * Maps any active uniform that is not an array element to a location.
2834 * Each active uniform, including individual structure members will appear
2835 * in this map. This roughly corresponds to the set of names that would be
2836 * enumerated by \c glGetActiveUniform.
2838 struct string_to_uint_map
*UniformHash
;
2840 struct gl_active_atomic_buffer
*AtomicBuffers
;
2841 unsigned NumAtomicBuffers
;
2843 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2844 GLboolean Validated
;
2845 GLboolean _Used
; /**< Ever used for drawing? */
2846 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2849 unsigned Version
; /**< GLSL version used for linking */
2850 bool IsES
; /**< True if this program uses GLSL ES */
2853 * Per-stage shaders resulting from the first stage of linking.
2855 * Set of linked shaders for this program. The array is accessed using the
2856 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2859 struct gl_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2861 /** List of all active resources after linking. */
2862 struct gl_program_resource
*ProgramResourceList
;
2863 unsigned NumProgramResourceList
;
2865 /* True if any of the fragment shaders attached to this program use:
2866 * #extension ARB_fragment_coord_conventions: enable
2868 GLboolean ARB_fragment_coord_conventions_enable
;
2872 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2873 #define GLSL_LOG 0x2 /**< Write shaders to files */
2874 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2875 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2876 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2877 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2878 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2879 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2880 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2881 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2885 * Context state for GLSL vertex/fragment shaders.
2886 * Extended to support pipeline object
2888 struct gl_pipeline_object
2890 /** Name of the pipeline object as received from glGenProgramPipelines.
2891 * It would be 0 for shaders without separate shader objects.
2899 GLchar
*Label
; /**< GL_KHR_debug */
2902 * Programs used for rendering
2904 * There is a separate program set for each shader stage.
2906 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2908 struct gl_shader_program
*_CurrentFragmentProgram
;
2911 * Program used by glUniform calls.
2913 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2915 struct gl_shader_program
*ActiveProgram
;
2917 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2919 GLboolean EverBound
; /**< Has the pipeline object been created */
2921 GLboolean Validated
; /**< Pipeline Validation status */
2927 * Context state for GLSL pipeline shaders.
2929 struct gl_pipeline_shader_state
2931 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2932 struct gl_pipeline_object
*Current
;
2934 /* Default Object to ensure that _Shader is never NULL */
2935 struct gl_pipeline_object
*Default
;
2937 /** Pipeline objects */
2938 struct _mesa_HashTable
*Objects
;
2942 * Compiler options for a single GLSL shaders type
2944 struct gl_shader_compiler_options
2946 /** Driver-selectable options: */
2947 GLboolean EmitNoLoops
;
2948 GLboolean EmitNoFunctions
;
2949 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2950 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2951 GLboolean EmitNoNoise
; /**< Emit NOISE opcodes? */
2952 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2953 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2954 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
2955 * gl_CullDistance together from
2956 * float[8] to vec4[2]
2960 * \name Forms of indirect addressing the driver cannot do.
2963 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
2964 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
2965 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
2966 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
2967 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
2970 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
2971 GLuint MaxUnrollIterations
;
2974 * Optimize code for array of structures backends.
2976 * This is a proxy for:
2977 * - preferring DP4 instructions (rather than MUL/MAD) for
2978 * matrix * vector operations, such as position transformation.
2980 GLboolean OptimizeForAOS
;
2982 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
2984 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
2985 GLboolean ClampBlockIndicesToArrayBounds
;
2987 GLboolean LowerShaderSharedVariables
; /**< Lower compute shader shared
2988 * variable access to intrinsics. */
2990 const struct nir_shader_compiler_options
*NirOptions
;
2995 * Occlusion/timer query object.
2997 struct gl_query_object
2999 GLenum Target
; /**< The query target, when active */
3000 GLuint Id
; /**< hash table ID/name */
3001 GLchar
*Label
; /**< GL_KHR_debug */
3002 GLuint64EXT Result
; /**< the counter */
3003 GLboolean Active
; /**< inside Begin/EndQuery */
3004 GLboolean Ready
; /**< result is ready? */
3005 GLboolean EverBound
;/**< has query object ever been bound */
3006 GLuint Stream
; /**< The stream */
3011 * Context state for query objects.
3013 struct gl_query_state
3015 struct _mesa_HashTable
*QueryObjects
;
3016 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
3017 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
3019 /** GL_NV_conditional_render */
3020 struct gl_query_object
*CondRenderQuery
;
3022 /** GL_EXT_transform_feedback */
3023 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
3024 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
3026 /** GL_ARB_timer_query */
3027 struct gl_query_object
*TimeElapsed
;
3029 /** GL_ARB_pipeline_statistics_query */
3030 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3032 GLenum CondRenderMode
;
3036 /** Sync object state */
3037 struct gl_sync_object
3039 GLenum Type
; /**< GL_SYNC_FENCE */
3040 GLuint Name
; /**< Fence name */
3041 GLchar
*Label
; /**< GL_KHR_debug */
3042 GLint RefCount
; /**< Reference count */
3043 GLboolean DeletePending
; /**< Object was deleted while there were still
3044 * live references (e.g., sync not yet finished)
3046 GLenum SyncCondition
;
3047 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3048 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3053 * State which can be shared by multiple contexts:
3055 struct gl_shared_state
3057 mtx_t Mutex
; /**< for thread safety */
3058 GLint RefCount
; /**< Reference count */
3059 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3060 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3061 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3063 /** Default texture objects (shared by all texture units) */
3064 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3066 /** Fallback texture used when a bound texture is incomplete */
3067 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3070 * \name Thread safety and statechange notification for texture
3073 * \todo Improve the granularity of locking.
3076 mtx_t TexMutex
; /**< texobj thread safety */
3077 GLuint TextureStateStamp
; /**< state notification for shared tex */
3080 /** Default buffer object for vertex arrays that aren't in VBOs */
3081 struct gl_buffer_object
*NullBufferObj
;
3084 * \name Vertex/geometry/fragment programs
3087 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3088 struct gl_vertex_program
*DefaultVertexProgram
;
3089 struct gl_fragment_program
*DefaultFragmentProgram
;
3092 /* GL_ATI_fragment_shader */
3093 struct _mesa_HashTable
*ATIShaders
;
3094 struct ati_fragment_shader
*DefaultFragmentShader
;
3096 struct _mesa_HashTable
*BufferObjects
;
3098 /** Table of both gl_shader and gl_shader_program objects */
3099 struct _mesa_HashTable
*ShaderObjects
;
3101 /* GL_EXT_framebuffer_object */
3102 struct _mesa_HashTable
*RenderBuffers
;
3103 struct _mesa_HashTable
*FrameBuffers
;
3106 struct set
*SyncObjects
;
3108 /** GL_ARB_sampler_objects */
3109 struct _mesa_HashTable
*SamplerObjects
;
3112 * Some context in this share group was affected by a GPU reset
3114 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3115 * been affected by a GPU reset must also return
3116 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3118 * Once this field becomes true, it is never reset to false.
3120 bool ShareGroupReset
;
3126 * Renderbuffers represent drawing surfaces such as color, depth and/or
3127 * stencil. A framebuffer object has a set of renderbuffers.
3128 * Drivers will typically derive subclasses of this type.
3130 struct gl_renderbuffer
3132 mtx_t Mutex
; /**< for thread safety */
3133 GLuint ClassID
; /**< Useful for drivers */
3135 GLchar
*Label
; /**< GL_KHR_debug */
3137 GLuint Width
, Height
;
3139 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3140 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3142 * True for renderbuffers that wrap textures, giving the driver a chance to
3143 * flush render caches through the FinishRenderTexture hook.
3145 * Drivers may also set this on renderbuffers other than those generated by
3146 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3147 * called without a rb->TexImage.
3149 GLboolean NeedsFinishRenderTexture
;
3151 GLenum InternalFormat
; /**< The user-specified format */
3152 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3153 GL_STENCIL_INDEX. */
3154 mesa_format Format
; /**< The actual renderbuffer memory format */
3156 * Pointer to the texture image if this renderbuffer wraps a texture,
3159 * Note that the reference on the gl_texture_object containing this
3160 * TexImage is held by the gl_renderbuffer_attachment.
3162 struct gl_texture_image
*TexImage
;
3164 /** Delete this renderbuffer */
3165 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3167 /** Allocate new storage for this renderbuffer */
3168 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3169 struct gl_renderbuffer
*rb
,
3170 GLenum internalFormat
,
3171 GLuint width
, GLuint height
);
3176 * A renderbuffer attachment points to either a texture object (and specifies
3177 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3179 struct gl_renderbuffer_attachment
3181 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3185 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3186 * application supplied renderbuffer object.
3188 struct gl_renderbuffer
*Renderbuffer
;
3191 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3192 * supplied texture object.
3194 struct gl_texture_object
*Texture
;
3195 GLuint TextureLevel
; /**< Attached mipmap level. */
3196 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3197 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3198 * and 2D array textures */
3204 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3205 * In C++ terms, think of this as a base class from which device drivers
3206 * will make derived classes.
3208 struct gl_framebuffer
3210 mtx_t Mutex
; /**< for thread safety */
3212 * If zero, this is a window system framebuffer. If non-zero, this
3213 * is a FBO framebuffer; note that for some devices (i.e. those with
3214 * a natural pixel coordinate system for FBOs that differs from the
3215 * OpenGL/Mesa coordinate system), this means that the viewport,
3216 * polygon face orientation, and polygon stipple will have to be inverted.
3221 GLchar
*Label
; /**< GL_KHR_debug */
3223 GLboolean DeletePending
;
3226 * The framebuffer's visual. Immutable if this is a window system buffer.
3227 * Computed from attachments if user-made FBO.
3229 struct gl_config Visual
;
3232 * Size of frame buffer in pixels. If there are no attachments, then both
3235 GLuint Width
, Height
;
3238 * In the case that the framebuffer has no attachment (i.e.
3239 * GL_ARB_framebuffer_no_attachments) then the geometry of
3240 * the framebuffer is specified by the default values.
3243 GLuint Width
, Height
, Layers
, NumSamples
;
3244 GLboolean FixedSampleLocations
;
3245 /* Derived from NumSamples by the driver so that it can choose a valid
3246 * value for the hardware.
3251 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3252 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3253 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3260 /** \name Derived Z buffer stuff */
3262 GLuint _DepthMax
; /**< Max depth buffer value */
3263 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3264 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3267 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3270 /** Whether one of Attachment has Type != GL_NONE
3271 * NOTE: the values for Width and Height are set to 0 in case of having
3272 * no attachments, a backend driver supporting the extension
3273 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3274 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3275 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3276 * _Ymax do NOT take into account _HasAttachments being false). To get the
3277 * geometry of the framebuffer, the helper functions
3278 * _mesa_geometric_width(),
3279 * _mesa_geometric_height(),
3280 * _mesa_geometric_samples() and
3281 * _mesa_geometric_layers()
3282 * are available that check _HasAttachments.
3284 bool _HasAttachments
;
3286 /** Integer color values */
3287 GLboolean _IntegerColor
;
3289 /* ARB_color_buffer_float */
3290 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3291 GLboolean _HasSNormOrFloatColorBuffer
;
3294 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3295 * is not layered. For cube maps and cube map arrays, each cube face
3296 * counts as a layer. As the case for Width, Height a backend driver
3297 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3298 * in the case that _HasAttachments is false
3300 GLuint MaxNumLayers
;
3302 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3303 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3305 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3306 * attribute group and GL_PIXEL attribute group, respectively.
3308 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3309 GLenum ColorReadBuffer
;
3311 /** Computed from ColorDraw/ReadBuffer above */
3312 GLuint _NumColorDrawBuffers
;
3313 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3314 GLint _ColorReadBufferIndex
; /* -1 = None */
3315 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3316 struct gl_renderbuffer
*_ColorReadBuffer
;
3318 /** Delete this framebuffer */
3319 void (*Delete
)(struct gl_framebuffer
*fb
);
3324 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3328 GLushort RangeMin
; /**< min value exponent */
3329 GLushort RangeMax
; /**< max value exponent */
3330 GLushort Precision
; /**< number of mantissa bits */
3335 * Limits for vertex, geometry and fragment programs/shaders.
3337 struct gl_program_constants
3339 /* logical limits */
3340 GLuint MaxInstructions
;
3341 GLuint MaxAluInstructions
;
3342 GLuint MaxTexInstructions
;
3343 GLuint MaxTexIndirections
;
3346 GLuint MaxAddressRegs
;
3347 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3348 GLuint MaxParameters
;
3349 GLuint MaxLocalParams
;
3350 GLuint MaxEnvParams
;
3351 /* native/hardware limits */
3352 GLuint MaxNativeInstructions
;
3353 GLuint MaxNativeAluInstructions
;
3354 GLuint MaxNativeTexInstructions
;
3355 GLuint MaxNativeTexIndirections
;
3356 GLuint MaxNativeAttribs
;
3357 GLuint MaxNativeTemps
;
3358 GLuint MaxNativeAddressRegs
;
3359 GLuint MaxNativeParameters
;
3361 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3364 * \name Per-stage input / output limits
3366 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3367 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3368 * ES). This is stored as \c gl_constants::MaxVarying.
3370 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3371 * variables. Each stage as a certain number of outputs that it can feed
3372 * to the next stage and a certain number inputs that it can consume from
3373 * the previous stage.
3375 * Vertex shader inputs do not participate this in this accounting.
3376 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3378 * Fragment shader outputs do not participate this in this accounting.
3379 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3382 GLuint MaxInputComponents
;
3383 GLuint MaxOutputComponents
;
3386 /* ES 2.0 and GL_ARB_ES2_compatibility */
3387 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3388 struct gl_precision LowInt
, MediumInt
, HighInt
;
3389 /* GL_ARB_uniform_buffer_object */
3390 GLuint MaxUniformBlocks
;
3391 GLuint MaxCombinedUniformComponents
;
3392 GLuint MaxTextureImageUnits
;
3394 /* GL_ARB_shader_atomic_counters */
3395 GLuint MaxAtomicBuffers
;
3396 GLuint MaxAtomicCounters
;
3398 /* GL_ARB_shader_image_load_store */
3399 GLuint MaxImageUniforms
;
3401 /* GL_ARB_shader_storage_buffer_object */
3402 GLuint MaxShaderStorageBlocks
;
3407 * Constants which may be overridden by device driver during context creation
3408 * but are never changed after that.
3412 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3413 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3414 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3415 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3416 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3417 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3418 GLuint MaxTextureCoordUnits
;
3419 GLuint MaxCombinedTextureImageUnits
;
3420 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3421 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3422 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3423 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3425 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3427 GLuint MaxArrayLockSize
;
3431 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3432 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3433 GLfloat PointSizeGranularity
;
3434 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3435 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3436 GLfloat LineWidthGranularity
;
3438 GLuint MaxClipPlanes
;
3440 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3441 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3443 GLuint MaxViewportWidth
, MaxViewportHeight
;
3444 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3445 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3449 } ViewportBounds
; /**< GL_ARB_viewport_array */
3451 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3452 GLuint MaxProgramMatrices
;
3453 GLuint MaxProgramMatrixStackDepth
;
3456 GLuint SamplesPassed
;
3459 GLuint PrimitivesGenerated
;
3460 GLuint PrimitivesWritten
;
3461 GLuint VerticesSubmitted
;
3462 GLuint PrimitivesSubmitted
;
3463 GLuint VsInvocations
;
3465 GLuint TessInvocations
;
3466 GLuint GsInvocations
;
3467 GLuint GsPrimitives
;
3468 GLuint FsInvocations
;
3469 GLuint ComputeInvocations
;
3470 GLuint ClInPrimitives
;
3471 GLuint ClOutPrimitives
;
3474 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3476 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3477 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3478 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3481 * GL_ARB_framebuffer_no_attachments
3483 GLuint MaxFramebufferWidth
;
3484 GLuint MaxFramebufferHeight
;
3485 GLuint MaxFramebufferLayers
;
3486 GLuint MaxFramebufferSamples
;
3488 /** Number of varying vectors between any two shader stages. */
3492 * GL_ARB_uniform_buffer_object
3494 GLuint MaxCombinedUniformBlocks
;
3495 GLuint MaxUniformBufferBindings
;
3496 GLuint MaxUniformBlockSize
;
3497 GLuint UniformBufferOffsetAlignment
;
3501 * GL_ARB_shader_storage_buffer_object
3503 GLuint MaxCombinedShaderStorageBlocks
;
3504 GLuint MaxShaderStorageBufferBindings
;
3505 GLuint MaxShaderStorageBlockSize
;
3506 GLuint ShaderStorageBufferOffsetAlignment
;
3510 * GL_ARB_explicit_uniform_location
3512 GLuint MaxUserAssignableUniformLocations
;
3514 /** geometry shader */
3515 GLuint MaxGeometryOutputVertices
;
3516 GLuint MaxGeometryTotalOutputComponents
;
3518 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3521 * Changes default GLSL extension behavior from "error" to "warn". It's out
3522 * of spec, but it can make some apps work that otherwise wouldn't.
3524 GLboolean ForceGLSLExtensionsWarn
;
3527 * If non-zero, forces GLSL shaders to behave as if they began
3528 * with "#version ForceGLSLVersion".
3530 GLuint ForceGLSLVersion
;
3533 * Allow GLSL #extension directives in the middle of shaders.
3535 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3538 * Does the driver support real 32-bit integers? (Otherwise, integers are
3539 * simulated via floats.)
3541 GLboolean NativeIntegers
;
3544 * Does VertexID count from zero or from base vertex?
3547 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3548 * ignored and need not be set.
3550 bool VertexID_is_zero_based
;
3553 * If the driver supports real 32-bit integers, what integer value should be
3554 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3556 GLuint UniformBooleanTrue
;
3559 * Maximum amount of time, measured in nanseconds, that the server can wait.
3561 GLuint64 MaxServerWaitTimeout
;
3563 /** GL_EXT_provoking_vertex */
3564 GLboolean QuadsFollowProvokingVertexConvention
;
3566 /** GL_ARB_viewport_array */
3567 GLenum LayerAndVPIndexProvokingVertex
;
3569 /** OpenGL version 3.0 */
3570 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3572 /** OpenGL version 3.2 */
3573 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3575 /** OpenGL version 4.4 */
3576 GLuint MaxVertexAttribStride
;
3578 /** GL_EXT_transform_feedback */
3579 GLuint MaxTransformFeedbackBuffers
;
3580 GLuint MaxTransformFeedbackSeparateComponents
;
3581 GLuint MaxTransformFeedbackInterleavedComponents
;
3582 GLuint MaxVertexStreams
;
3584 /** GL_EXT_gpu_shader4 */
3585 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3587 /** GL_ARB_texture_gather */
3588 GLuint MinProgramTextureGatherOffset
;
3589 GLuint MaxProgramTextureGatherOffset
;
3590 GLuint MaxProgramTextureGatherComponents
;
3592 /* GL_ARB_robustness */
3593 GLenum ResetStrategy
;
3595 /* GL_ARB_blend_func_extended */
3596 GLuint MaxDualSourceDrawBuffers
;
3599 * Whether the implementation strips out and ignores texture borders.
3601 * Many GPU hardware implementations don't support rendering with texture
3602 * borders and mipmapped textures. (Note: not static border color, but the
3603 * old 1-pixel border around each edge). Implementations then have to do
3604 * slow fallbacks to be correct, or just ignore the border and be fast but
3605 * wrong. Setting the flag strips the border off of TexImage calls,
3606 * providing "fast but wrong" at significantly reduced driver complexity.
3608 * Texture borders are deprecated in GL 3.0.
3610 GLboolean StripTextureBorder
;
3613 * For drivers which can do a better job at eliminating unused uniforms
3614 * than the GLSL compiler.
3616 * XXX Remove these as soon as a better solution is available.
3618 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3620 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3621 bool GLSLFragCoordIsSysVal
;
3622 bool GLSLFrontFacingIsSysVal
;
3625 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3626 * than passing the transform feedback object to the drawing function.
3628 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3630 /** GL_ARB_map_buffer_alignment */
3631 GLuint MinMapBufferAlignment
;
3634 * Disable varying packing. This is out of spec, but potentially useful
3635 * for older platforms that supports a limited number of texture
3636 * indirections--on these platforms, unpacking the varyings in the fragment
3637 * shader increases the number of texture indirections by 1, which might
3638 * make some shaders not executable at all.
3640 * Drivers that support transform feedback must set this value to GL_FALSE.
3642 GLboolean DisableVaryingPacking
;
3645 * Should meaningful names be generated for compiler temporary variables?
3647 * Generally, it is not useful to have the compiler generate "meaningful"
3648 * names for temporary variables that it creates. This can, however, be a
3649 * useful debugging aid. In Mesa debug builds or release builds when
3650 * MESA_GLSL is set at run-time, meaningful names will be generated.
3651 * Drivers can also force names to be generated by setting this field.
3652 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3653 * vertex shader assembly) is set at run-time.
3655 bool GenerateTemporaryNames
;
3658 * Maximum value supported for an index in DrawElements and friends.
3660 * This must be at least (1ull<<24)-1. The default value is
3663 * \since ES 3.0 or GL_ARB_ES3_compatibility
3664 * \sa _mesa_init_constants
3666 GLuint64 MaxElementIndex
;
3669 * Disable interpretation of line continuations (lines ending with a
3670 * backslash character ('\') in GLSL source.
3672 GLboolean DisableGLSLLineContinuations
;
3674 /** GL_ARB_texture_multisample */
3675 GLint MaxColorTextureSamples
;
3676 GLint MaxDepthTextureSamples
;
3677 GLint MaxIntegerSamples
;
3680 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3681 * samples are laid out in a rectangular grid roughly corresponding to
3682 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3683 * are used to map indices of rectangular grid to sample numbers within
3684 * a pixel. This mapping of indices to sample numbers must be initialized
3685 * by the driver for the target hardware. For example, if we have the 8X
3686 * MSAA sample number layout (sample positions) for XYZ hardware:
3688 * sample indices layout sample number layout
3689 * --------- ---------
3690 * | 0 | 1 | | a | b |
3691 * --------- ---------
3692 * | 2 | 3 | | c | d |
3693 * --------- ---------
3694 * | 4 | 5 | | e | f |
3695 * --------- ---------
3696 * | 6 | 7 | | g | h |
3697 * --------- ---------
3699 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3701 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3703 * SampleMap8x = {a, b, c, d, e, f, g, h};
3705 * Follow the logic for sample counts 2-8.
3707 * For 16x the sample indices layout as a 4x4 grid as follows:
3719 uint8_t SampleMap2x
[2];
3720 uint8_t SampleMap4x
[4];
3721 uint8_t SampleMap8x
[8];
3722 uint8_t SampleMap16x
[16];
3724 /** GL_ARB_shader_atomic_counters */
3725 GLuint MaxAtomicBufferBindings
;
3726 GLuint MaxAtomicBufferSize
;
3727 GLuint MaxCombinedAtomicBuffers
;
3728 GLuint MaxCombinedAtomicCounters
;
3730 /** GL_ARB_vertex_attrib_binding */
3731 GLint MaxVertexAttribRelativeOffset
;
3732 GLint MaxVertexAttribBindings
;
3734 /* GL_ARB_shader_image_load_store */
3735 GLuint MaxImageUnits
;
3736 GLuint MaxCombinedShaderOutputResources
;
3737 GLuint MaxImageSamples
;
3738 GLuint MaxCombinedImageUniforms
;
3740 /** GL_ARB_compute_shader */
3741 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3742 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3743 GLuint MaxComputeWorkGroupInvocations
;
3744 GLuint MaxComputeSharedMemorySize
;
3746 /** GL_ARB_gpu_shader5 */
3747 GLfloat MinFragmentInterpolationOffset
;
3748 GLfloat MaxFragmentInterpolationOffset
;
3750 GLboolean FakeSWMSAA
;
3752 /** GL_KHR_context_flush_control */
3753 GLenum ContextReleaseBehavior
;
3755 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3757 /** GL_ARB_tessellation_shader */
3758 GLuint MaxPatchVertices
;
3759 GLuint MaxTessGenLevel
;
3760 GLuint MaxTessPatchComponents
;
3761 GLuint MaxTessControlTotalOutputComponents
;
3762 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3763 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3764 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3765 bool PrimitiveRestartForPatches
;
3766 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3767 * gl_LocalInvocationIndex based on
3768 * other builtin variables. */
3773 * Enable flag for each OpenGL extension. Different device drivers will
3774 * enable different extensions at runtime.
3776 struct gl_extensions
3778 GLboolean dummy
; /* don't remove this! */
3779 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3780 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3781 GLboolean ANGLE_texture_compression_dxt
;
3782 GLboolean ARB_ES2_compatibility
;
3783 GLboolean ARB_ES3_compatibility
;
3784 GLboolean ARB_ES3_1_compatibility
;
3785 GLboolean ARB_ES3_2_compatibility
;
3786 GLboolean ARB_arrays_of_arrays
;
3787 GLboolean ARB_base_instance
;
3788 GLboolean ARB_blend_func_extended
;
3789 GLboolean ARB_buffer_storage
;
3790 GLboolean ARB_clear_texture
;
3791 GLboolean ARB_clip_control
;
3792 GLboolean ARB_color_buffer_float
;
3793 GLboolean ARB_compute_shader
;
3794 GLboolean ARB_conditional_render_inverted
;
3795 GLboolean ARB_conservative_depth
;
3796 GLboolean ARB_copy_image
;
3797 GLboolean ARB_cull_distance
;
3798 GLboolean ARB_depth_buffer_float
;
3799 GLboolean ARB_depth_clamp
;
3800 GLboolean ARB_depth_texture
;
3801 GLboolean ARB_derivative_control
;
3802 GLboolean ARB_draw_buffers_blend
;
3803 GLboolean ARB_draw_elements_base_vertex
;
3804 GLboolean ARB_draw_indirect
;
3805 GLboolean ARB_draw_instanced
;
3806 GLboolean ARB_fragment_coord_conventions
;
3807 GLboolean ARB_fragment_layer_viewport
;
3808 GLboolean ARB_fragment_program
;
3809 GLboolean ARB_fragment_program_shadow
;
3810 GLboolean ARB_fragment_shader
;
3811 GLboolean ARB_framebuffer_no_attachments
;
3812 GLboolean ARB_framebuffer_object
;
3813 GLboolean ARB_enhanced_layouts
;
3814 GLboolean ARB_explicit_attrib_location
;
3815 GLboolean ARB_explicit_uniform_location
;
3816 GLboolean ARB_gpu_shader5
;
3817 GLboolean ARB_gpu_shader_fp64
;
3818 GLboolean ARB_half_float_vertex
;
3819 GLboolean ARB_indirect_parameters
;
3820 GLboolean ARB_instanced_arrays
;
3821 GLboolean ARB_internalformat_query
;
3822 GLboolean ARB_internalformat_query2
;
3823 GLboolean ARB_map_buffer_range
;
3824 GLboolean ARB_occlusion_query
;
3825 GLboolean ARB_occlusion_query2
;
3826 GLboolean ARB_pipeline_statistics_query
;
3827 GLboolean ARB_point_sprite
;
3828 GLboolean ARB_query_buffer_object
;
3829 GLboolean ARB_robust_buffer_access_behavior
;
3830 GLboolean ARB_sample_shading
;
3831 GLboolean ARB_seamless_cube_map
;
3832 GLboolean ARB_shader_atomic_counter_ops
;
3833 GLboolean ARB_shader_atomic_counters
;
3834 GLboolean ARB_shader_bit_encoding
;
3835 GLboolean ARB_shader_clock
;
3836 GLboolean ARB_shader_draw_parameters
;
3837 GLboolean ARB_shader_group_vote
;
3838 GLboolean ARB_shader_image_load_store
;
3839 GLboolean ARB_shader_image_size
;
3840 GLboolean ARB_shader_precision
;
3841 GLboolean ARB_shader_stencil_export
;
3842 GLboolean ARB_shader_storage_buffer_object
;
3843 GLboolean ARB_shader_subroutine
;
3844 GLboolean ARB_shader_texture_image_samples
;
3845 GLboolean ARB_shader_texture_lod
;
3846 GLboolean ARB_shading_language_packing
;
3847 GLboolean ARB_shading_language_420pack
;
3848 GLboolean ARB_shadow
;
3849 GLboolean ARB_stencil_texturing
;
3851 GLboolean ARB_tessellation_shader
;
3852 GLboolean ARB_texture_border_clamp
;
3853 GLboolean ARB_texture_buffer_object
;
3854 GLboolean ARB_texture_buffer_object_rgb32
;
3855 GLboolean ARB_texture_buffer_range
;
3856 GLboolean ARB_texture_compression_bptc
;
3857 GLboolean ARB_texture_compression_rgtc
;
3858 GLboolean ARB_texture_cube_map
;
3859 GLboolean ARB_texture_cube_map_array
;
3860 GLboolean ARB_texture_env_combine
;
3861 GLboolean ARB_texture_env_crossbar
;
3862 GLboolean ARB_texture_env_dot3
;
3863 GLboolean ARB_texture_float
;
3864 GLboolean ARB_texture_gather
;
3865 GLboolean ARB_texture_mirror_clamp_to_edge
;
3866 GLboolean ARB_texture_multisample
;
3867 GLboolean ARB_texture_non_power_of_two
;
3868 GLboolean ARB_texture_stencil8
;
3869 GLboolean ARB_texture_query_levels
;
3870 GLboolean ARB_texture_query_lod
;
3871 GLboolean ARB_texture_rg
;
3872 GLboolean ARB_texture_rgb10_a2ui
;
3873 GLboolean ARB_texture_view
;
3874 GLboolean ARB_timer_query
;
3875 GLboolean ARB_transform_feedback2
;
3876 GLboolean ARB_transform_feedback3
;
3877 GLboolean ARB_transform_feedback_instanced
;
3878 GLboolean ARB_uniform_buffer_object
;
3879 GLboolean ARB_vertex_attrib_64bit
;
3880 GLboolean ARB_vertex_program
;
3881 GLboolean ARB_vertex_shader
;
3882 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3883 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3884 GLboolean ARB_viewport_array
;
3885 GLboolean EXT_blend_color
;
3886 GLboolean EXT_blend_equation_separate
;
3887 GLboolean EXT_blend_func_separate
;
3888 GLboolean EXT_blend_minmax
;
3889 GLboolean EXT_depth_bounds_test
;
3890 GLboolean EXT_draw_buffers2
;
3891 GLboolean EXT_framebuffer_multisample
;
3892 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3893 GLboolean EXT_framebuffer_sRGB
;
3894 GLboolean EXT_gpu_program_parameters
;
3895 GLboolean EXT_gpu_shader4
;
3896 GLboolean EXT_packed_float
;
3897 GLboolean EXT_pixel_buffer_object
;
3898 GLboolean EXT_point_parameters
;
3899 GLboolean EXT_polygon_offset_clamp
;
3900 GLboolean EXT_provoking_vertex
;
3901 GLboolean EXT_shader_integer_mix
;
3902 GLboolean EXT_shader_samples_identical
;
3903 GLboolean EXT_stencil_two_side
;
3904 GLboolean EXT_texture_array
;
3905 GLboolean EXT_texture_compression_latc
;
3906 GLboolean EXT_texture_compression_s3tc
;
3907 GLboolean EXT_texture_env_dot3
;
3908 GLboolean EXT_texture_filter_anisotropic
;
3909 GLboolean EXT_texture_integer
;
3910 GLboolean EXT_texture_mirror_clamp
;
3911 GLboolean EXT_texture_shared_exponent
;
3912 GLboolean EXT_texture_snorm
;
3913 GLboolean EXT_texture_sRGB
;
3914 GLboolean EXT_texture_sRGB_decode
;
3915 GLboolean EXT_texture_swizzle
;
3916 GLboolean EXT_transform_feedback
;
3917 GLboolean EXT_timer_query
;
3918 GLboolean EXT_vertex_array_bgra
;
3919 GLboolean OES_copy_image
;
3920 GLboolean OES_sample_variables
;
3921 GLboolean OES_shader_io_blocks
;
3922 GLboolean OES_standard_derivatives
;
3923 GLboolean OES_texture_buffer
;
3924 /* vendor extensions */
3925 GLboolean AMD_performance_monitor
;
3926 GLboolean AMD_pinned_memory
;
3927 GLboolean AMD_seamless_cubemap_per_texture
;
3928 GLboolean AMD_vertex_shader_layer
;
3929 GLboolean AMD_vertex_shader_viewport_index
;
3930 GLboolean APPLE_object_purgeable
;
3931 GLboolean ATI_meminfo
;
3932 GLboolean ATI_texture_compression_3dc
;
3933 GLboolean ATI_texture_mirror_once
;
3934 GLboolean ATI_texture_env_combine3
;
3935 GLboolean ATI_fragment_shader
;
3936 GLboolean ATI_separate_stencil
;
3937 GLboolean GREMEDY_string_marker
;
3938 GLboolean INTEL_performance_query
;
3939 GLboolean KHR_robustness
;
3940 GLboolean KHR_texture_compression_astc_hdr
;
3941 GLboolean KHR_texture_compression_astc_ldr
;
3942 GLboolean MESA_pack_invert
;
3943 GLboolean MESA_ycbcr_texture
;
3944 GLboolean NV_conditional_render
;
3945 GLboolean NV_fog_distance
;
3946 GLboolean NV_point_sprite
;
3947 GLboolean NV_primitive_restart
;
3948 GLboolean NV_texture_barrier
;
3949 GLboolean NV_texture_env_combine4
;
3950 GLboolean NV_texture_rectangle
;
3951 GLboolean NV_vdpau_interop
;
3952 GLboolean NVX_gpu_memory_info
;
3953 GLboolean TDFX_texture_compression_FXT1
;
3954 GLboolean OES_EGL_image
;
3955 GLboolean OES_draw_texture
;
3956 GLboolean OES_depth_texture_cube_map
;
3957 GLboolean OES_EGL_image_external
;
3958 GLboolean OES_texture_float
;
3959 GLboolean OES_texture_float_linear
;
3960 GLboolean OES_texture_half_float
;
3961 GLboolean OES_texture_half_float_linear
;
3962 GLboolean OES_compressed_ETC1_RGB8_texture
;
3963 GLboolean OES_geometry_shader
;
3964 GLboolean OES_texture_compression_astc
;
3965 GLboolean extension_sentinel
;
3966 /** The extension string */
3967 const GLubyte
*String
;
3968 /** Number of supported extensions */
3971 * The context version which extension helper functions compare against.
3972 * By default, the value is equal to ctx->Version. This changes to ~0
3973 * while meta is in progress.
3980 * A stack of matrices (projection, modelview, color, texture, etc).
3982 struct gl_matrix_stack
3984 GLmatrix
*Top
; /**< points into Stack */
3985 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
3986 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
3987 GLuint MaxDepth
; /**< size of Stack[] array */
3988 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3993 * \name Bits for image transfer operations
3994 * \sa __struct gl_contextRec::ImageTransferState.
3997 #define IMAGE_SCALE_BIAS_BIT 0x1
3998 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3999 #define IMAGE_MAP_COLOR_BIT 0x4
4000 #define IMAGE_CLAMP_BIT 0x800
4003 /** Pixel Transfer ops */
4004 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4005 IMAGE_SHIFT_OFFSET_BIT | \
4006 IMAGE_MAP_COLOR_BIT)
4009 * \name Bits to indicate what state has changed.
4012 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4013 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4014 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4015 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4016 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4017 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4018 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4019 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4020 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4021 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4022 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4023 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4024 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4025 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4026 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4027 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4028 #define _NEW_TEXTURE (1u << 16) /**< gl_context::Texture */
4029 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4030 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4031 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4032 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4033 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4034 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4035 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4036 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4037 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4038 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4039 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4040 #define _NEW_BUFFER_OBJECT (1u << 28)
4041 #define _NEW_FRAG_CLAMP (1u << 29)
4042 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4043 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4049 * Composite state flags
4052 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4058 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4068 /* This has to be included here. */
4073 * Display list flags.
4074 * Strictly this is a tnl-private concept, but it doesn't seem
4075 * worthwhile adding a tnl private structure just to hold this one bit
4078 #define DLIST_DANGLING_REFS 0x1
4081 /** Opaque declaration of display list payload data type */
4082 union gl_dlist_node
;
4086 * Provide a location where information about a display list can be
4087 * collected. Could be extended with driverPrivate structures,
4088 * etc. in the future.
4090 struct gl_display_list
4093 GLchar
*Label
; /**< GL_KHR_debug */
4094 GLbitfield Flags
; /**< DLIST_x flags */
4095 /** The dlist commands are in a linked list of nodes */
4096 union gl_dlist_node
*Head
;
4101 * State used during display list compilation and execution.
4103 struct gl_dlist_state
4105 GLuint CallDepth
; /**< Current recursion calling depth */
4107 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4108 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4109 GLuint CurrentPos
; /**< Index into current block of nodes */
4111 GLvertexformat ListVtxfmt
;
4113 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4114 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4116 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4117 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4120 /* State known to have been set by the currently-compiling display
4121 * list. Used to eliminate some redundant state changes.
4129 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4130 * to small enums suitable for use as an array index.
4133 enum mesa_debug_source
{
4134 MESA_DEBUG_SOURCE_API
,
4135 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4136 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4137 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4138 MESA_DEBUG_SOURCE_APPLICATION
,
4139 MESA_DEBUG_SOURCE_OTHER
,
4140 MESA_DEBUG_SOURCE_COUNT
4143 enum mesa_debug_type
{
4144 MESA_DEBUG_TYPE_ERROR
,
4145 MESA_DEBUG_TYPE_DEPRECATED
,
4146 MESA_DEBUG_TYPE_UNDEFINED
,
4147 MESA_DEBUG_TYPE_PORTABILITY
,
4148 MESA_DEBUG_TYPE_PERFORMANCE
,
4149 MESA_DEBUG_TYPE_OTHER
,
4150 MESA_DEBUG_TYPE_MARKER
,
4151 MESA_DEBUG_TYPE_PUSH_GROUP
,
4152 MESA_DEBUG_TYPE_POP_GROUP
,
4153 MESA_DEBUG_TYPE_COUNT
4156 enum mesa_debug_severity
{
4157 MESA_DEBUG_SEVERITY_LOW
,
4158 MESA_DEBUG_SEVERITY_MEDIUM
,
4159 MESA_DEBUG_SEVERITY_HIGH
,
4160 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4161 MESA_DEBUG_SEVERITY_COUNT
4167 * Driver-specific state flags.
4169 * These are or'd with gl_context::NewDriverState to notify a driver about
4170 * a state change. The driver sets the flags at context creation and
4171 * the meaning of the bits set is opaque to core Mesa.
4173 struct gl_driver_flags
4175 /** gl_context::Array::_DrawArrays (vertex array state) */
4178 /** gl_context::TransformFeedback::CurrentObject */
4179 uint64_t NewTransformFeedback
;
4181 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4182 uint64_t NewTransformFeedbackProg
;
4184 /** gl_context::RasterDiscard */
4185 uint64_t NewRasterizerDiscard
;
4188 * gl_context::UniformBufferBindings
4189 * gl_shader_program::UniformBlocks
4191 uint64_t NewUniformBuffer
;
4194 * gl_context::ShaderStorageBufferBindings
4195 * gl_shader_program::ShaderStorageBlocks
4197 uint64_t NewShaderStorageBuffer
;
4199 uint64_t NewTextureBuffer
;
4202 * gl_context::AtomicBufferBindings
4204 uint64_t NewAtomicBuffer
;
4207 * gl_context::ImageUnits
4209 uint64_t NewImageUnits
;
4212 * gl_context::TessCtrlProgram::patch_default_*
4214 uint64_t NewDefaultTessLevels
;
4217 struct gl_uniform_buffer_binding
4219 struct gl_buffer_object
*BufferObject
;
4220 /** Start of uniform block data in the buffer */
4222 /** Size of data allowed to be referenced from the buffer (in bytes) */
4225 * glBindBufferBase() indicates that the Size should be ignored and only
4226 * limited by the current size of the BufferObject.
4228 GLboolean AutomaticSize
;
4231 struct gl_shader_storage_buffer_binding
4233 struct gl_buffer_object
*BufferObject
;
4234 /** Start of shader storage block data in the buffer */
4236 /** Size of data allowed to be referenced from the buffer (in bytes) */
4239 * glBindBufferBase() indicates that the Size should be ignored and only
4240 * limited by the current size of the BufferObject.
4242 GLboolean AutomaticSize
;
4246 * ARB_shader_image_load_store image unit.
4248 struct gl_image_unit
4251 * Texture object bound to this unit.
4253 struct gl_texture_object
*TexObj
;
4256 * Level of the texture object bound to this unit.
4261 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4262 * GL_FALSE if only some specific layer of the texture is bound.
4268 * Layer of the texture object bound to this unit as specified by the
4274 * Layer of the texture object bound to this unit, or zero if the
4275 * whole level is bound.
4280 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4281 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4286 * GL internal format that determines the interpretation of the
4287 * image memory when shader image operations are performed through
4293 * Mesa format corresponding to \c Format.
4295 mesa_format _ActualFormat
;
4300 * Binding point for an atomic counter buffer object.
4302 struct gl_atomic_buffer_binding
4304 struct gl_buffer_object
*BufferObject
;
4310 * Mesa rendering context.
4312 * This is the central context data structure for Mesa. Almost all
4313 * OpenGL state is contained in this structure.
4314 * Think of this as a base class from which device drivers will derive
4319 /** State possibly shared with other contexts in the address space */
4320 struct gl_shared_state
*Shared
;
4322 /** \name API function pointer tables */
4326 * The current dispatch table for non-displaylist-saving execution, either
4327 * BeginEnd or OutsideBeginEnd
4329 struct _glapi_table
*Exec
;
4331 * The normal dispatch table for non-displaylist-saving, non-begin/end
4333 struct _glapi_table
*OutsideBeginEnd
;
4334 /** The dispatch table used between glNewList() and glEndList() */
4335 struct _glapi_table
*Save
;
4337 * The dispatch table used between glBegin() and glEnd() (outside of a
4338 * display list). Only valid functions between those two are set, which is
4339 * mostly just the set in a GLvertexformat struct.
4341 struct _glapi_table
*BeginEnd
;
4343 * Dispatch table for when a graphics reset has happened.
4345 struct _glapi_table
*ContextLost
;
4347 * Tracks the current dispatch table out of the 4 above, so that it can be
4348 * re-set on glXMakeCurrent().
4350 struct _glapi_table
*CurrentDispatch
;
4353 struct gl_config Visual
;
4354 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4355 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4356 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4357 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4360 * Device driver function pointer table
4362 struct dd_function_table Driver
;
4364 /** Core/Driver constants */
4365 struct gl_constants Const
;
4367 /** \name The various 4x4 matrix stacks */
4369 struct gl_matrix_stack ModelviewMatrixStack
;
4370 struct gl_matrix_stack ProjectionMatrixStack
;
4371 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4372 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4373 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4376 /** Combined modelview and projection matrix */
4377 GLmatrix _ModelProjectMatrix
;
4379 /** \name Display lists */
4380 struct gl_dlist_state ListState
;
4382 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4383 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4385 /** Extension information */
4386 struct gl_extensions Extensions
;
4388 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4390 char *VersionString
;
4392 /** \name State attribute stack (for glPush/PopAttrib) */
4394 GLuint AttribStackDepth
;
4395 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4398 /** \name Renderer attribute groups
4400 * We define a struct for each attribute group to make pushing and popping
4401 * attributes easy. Also it's a good organization.
4404 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4405 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4406 struct gl_current_attrib Current
; /**< Current attributes */
4407 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4408 struct gl_eval_attrib Eval
; /**< Eval attributes */
4409 struct gl_fog_attrib Fog
; /**< Fog attributes */
4410 struct gl_hint_attrib Hint
; /**< Hint attributes */
4411 struct gl_light_attrib Light
; /**< Light attributes */
4412 struct gl_line_attrib Line
; /**< Line attributes */
4413 struct gl_list_attrib List
; /**< List attributes */
4414 struct gl_multisample_attrib Multisample
;
4415 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4416 struct gl_point_attrib Point
; /**< Point attributes */
4417 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4418 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4419 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4420 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4421 struct gl_texture_attrib Texture
; /**< Texture attributes */
4422 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4423 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4426 /** \name Client attribute stack */
4428 GLuint ClientAttribStackDepth
;
4429 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4432 /** \name Client attribute groups */
4434 struct gl_array_attrib Array
; /**< Vertex arrays */
4435 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4436 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4437 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4440 /** \name Other assorted state (not pushed/popped on attribute stack) */
4442 struct gl_pixelmaps PixelMaps
;
4444 struct gl_evaluators EvalMap
; /**< All evaluators */
4445 struct gl_feedback Feedback
; /**< Feedback */
4446 struct gl_selection Select
; /**< Selection */
4448 struct gl_program_state Program
; /**< general program state */
4449 struct gl_vertex_program_state VertexProgram
;
4450 struct gl_fragment_program_state FragmentProgram
;
4451 struct gl_geometry_program_state GeometryProgram
;
4452 struct gl_compute_program_state ComputeProgram
;
4453 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4454 struct gl_tess_eval_program_state TessEvalProgram
;
4455 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4457 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4458 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4461 * Current active shader pipeline state
4463 * Almost all internal users want ::_Shader instead of ::Shader. The
4464 * exceptions are bits of legacy GLSL API that do not know about separate
4467 * If a program is active via \c glUseProgram, this will point to
4470 * If a program pipeline is active via \c glBindProgramPipeline, this will
4471 * point to \c ::Pipeline.Current.
4473 * If neither a program nor a program pipeline is active, this will point to
4474 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4477 struct gl_pipeline_object
*_Shader
;
4479 struct gl_query_state Query
; /**< occlusion, timer queries */
4481 struct gl_transform_feedback_state TransformFeedback
;
4483 struct gl_perf_monitor_state PerfMonitor
;
4485 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4486 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4487 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4489 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4490 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4492 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4495 * Current GL_ARB_uniform_buffer_object binding referenced by
4496 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4498 struct gl_buffer_object
*UniformBuffer
;
4501 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4502 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4504 struct gl_buffer_object
*ShaderStorageBuffer
;
4507 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4508 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4509 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4512 struct gl_uniform_buffer_binding
4513 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4516 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4517 * and GL 4.3. This is set up using glBindBufferRange() or
4518 * glBindBufferBase(). They are associated with shader storage blocks by
4519 * glShaderStorageBlockBinding()'s state in the shader program.
4521 struct gl_shader_storage_buffer_binding
4522 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4525 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4528 struct gl_buffer_object
*AtomicBuffer
;
4531 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4534 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4537 * Array of atomic counter buffer binding points.
4539 struct gl_atomic_buffer_binding
4540 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4543 * Array of image units for ARB_shader_image_load_store.
4545 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4549 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4551 /* GL_EXT_framebuffer_object */
4552 struct gl_renderbuffer
*CurrentRenderbuffer
;
4554 GLenum ErrorValue
; /**< Last error code */
4557 * Recognize and silence repeated error debug messages in buggy apps.
4559 const char *ErrorDebugFmtString
;
4560 GLuint ErrorDebugCount
;
4562 /* GL_ARB_debug_output/GL_KHR_debug */
4564 struct gl_debug_state
*Debug
;
4566 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4567 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4568 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4570 struct gl_driver_flags DriverFlags
;
4572 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4574 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4576 /** \name Derived state */
4577 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4578 GLfloat _EyeZDir
[3];
4579 GLfloat _ModelViewInvScale
;
4580 GLboolean _NeedEyeCoords
;
4581 GLboolean _ForceEyeCoords
;
4583 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4585 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4587 /** \name For debugging/development only */
4589 GLboolean FirstTimeCurrent
;
4593 * False if this context was created without a config. This is needed
4594 * because the initial state of glDrawBuffers depends on this
4596 GLboolean HasConfig
;
4598 /** software compression/decompression supported or not */
4599 GLboolean Mesa_DXTn
;
4601 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4603 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4606 * \name Hooks for module contexts.
4608 * These will eventually live in the driver or elsewhere.
4611 void *swrast_context
;
4612 void *swsetup_context
;
4613 void *swtnl_context
;
4614 struct vbo_context
*vbo_context
;
4615 struct st_context
*st
;
4620 * \name NV_vdpau_interop
4623 const void *vdpDevice
;
4624 const void *vdpGetProcAddress
;
4625 struct set
*vdpSurfaces
;
4629 * Has this context observed a GPU reset in any context in the share group?
4631 * Once this field becomes true, it is never reset to false.
4633 GLboolean ShareGroupReset
;
4637 * Information about memory usage. All sizes are in kilobytes.
4639 struct gl_memory_info
4641 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4642 unsigned avail_device_memory
; /**< free device memory at the moment */
4643 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4644 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4645 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4646 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4650 extern int MESA_VERBOSE
;
4651 extern int MESA_DEBUG_FLAGS
;
4652 # define MESA_FUNCTION __func__
4654 # define MESA_VERBOSE 0
4655 # define MESA_DEBUG_FLAGS 0
4656 # define MESA_FUNCTION "a function"
4660 /** The MESA_VERBOSE var is a bitmask of these flags */
4663 VERBOSE_VARRAY
= 0x0001,
4664 VERBOSE_TEXTURE
= 0x0002,
4665 VERBOSE_MATERIAL
= 0x0004,
4666 VERBOSE_PIPELINE
= 0x0008,
4667 VERBOSE_DRIVER
= 0x0010,
4668 VERBOSE_STATE
= 0x0020,
4669 VERBOSE_API
= 0x0040,
4670 VERBOSE_DISPLAY_LIST
= 0x0100,
4671 VERBOSE_LIGHTING
= 0x0200,
4672 VERBOSE_PRIMS
= 0x0400,
4673 VERBOSE_VERTS
= 0x0800,
4674 VERBOSE_DISASSEM
= 0x1000,
4675 VERBOSE_DRAW
= 0x2000,
4676 VERBOSE_SWAPBUFFERS
= 0x4000
4680 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4683 DEBUG_SILENT
= (1 << 0),
4684 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4685 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4686 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4693 #endif /* MTYPES_H */