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"
48 #include "util/bitscan.h"
57 * \name 64-bit extension of GLbitfield.
60 typedef GLuint64 GLbitfield64
;
62 /** Set a single bit */
63 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
64 /** Set all bits up to excluding bit b */
65 #define BITFIELD64_MASK(b) \
66 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
67 /** Set count bits starting from bit b */
68 #define BITFIELD64_RANGE(b, count) \
69 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
73 * \name Some forward type declarations
76 struct _mesa_HashTable
;
77 struct gl_attrib_node
;
78 struct gl_list_extensions
;
80 struct gl_program_cache
;
81 struct gl_texture_object
;
82 struct gl_debug_state
;
85 struct gl_uniform_storage
;
86 struct prog_instruction
;
87 struct gl_program_parameter_list
;
94 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
95 #define PRIM_MAX GL_PATCHES
96 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
97 #define PRIM_UNKNOWN (PRIM_MAX + 2)
100 * Determine if the given gl_varying_slot appears in the fragment shader.
102 static inline GLboolean
103 _mesa_varying_slot_in_fs(gl_varying_slot slot
)
106 case VARYING_SLOT_PSIZ
:
107 case VARYING_SLOT_BFC0
:
108 case VARYING_SLOT_BFC1
:
109 case VARYING_SLOT_EDGE
:
110 case VARYING_SLOT_CLIP_VERTEX
:
111 case VARYING_SLOT_LAYER
:
112 case VARYING_SLOT_TESS_LEVEL_OUTER
:
113 case VARYING_SLOT_TESS_LEVEL_INNER
:
114 case VARYING_SLOT_BOUNDING_BOX0
:
115 case VARYING_SLOT_BOUNDING_BOX1
:
123 * Indexes for all renderbuffers
127 /* the four standard color buffers */
135 /* optional aux buffer */
137 /* generic renderbuffers */
150 * Bit flags for all renderbuffers
152 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
153 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
154 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
155 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
156 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
157 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
158 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
159 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
160 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
161 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
162 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
163 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
164 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
165 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
166 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
167 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
168 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
169 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
170 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
173 * Mask of all the color buffer bits (but not accum).
175 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
176 BUFFER_BIT_BACK_LEFT | \
177 BUFFER_BIT_FRONT_RIGHT | \
178 BUFFER_BIT_BACK_RIGHT | \
180 BUFFER_BIT_COLOR0 | \
181 BUFFER_BIT_COLOR1 | \
182 BUFFER_BIT_COLOR2 | \
183 BUFFER_BIT_COLOR3 | \
184 BUFFER_BIT_COLOR4 | \
185 BUFFER_BIT_COLOR5 | \
186 BUFFER_BIT_COLOR6 | \
190 * Framebuffer configuration (aka visual / pixelformat)
191 * Note: some of these fields should be boolean, but it appears that
192 * code in drivers/dri/common/util.c requires int-sized fields.
198 GLuint doubleBufferMode
;
201 GLboolean haveAccumBuffer
;
202 GLboolean haveDepthBuffer
;
203 GLboolean haveStencilBuffer
;
205 GLint redBits
, greenBits
, blueBits
, alphaBits
; /* bits per comp */
206 GLuint redMask
, greenMask
, blueMask
, alphaMask
;
207 GLint rgbBits
; /* total bits for rgb */
208 GLint indexBits
; /* total bits for colorindex */
210 GLint accumRedBits
, accumGreenBits
, accumBlueBits
, accumAlphaBits
;
218 /* EXT_visual_rating / GLX 1.2 */
221 /* EXT_visual_info / GLX 1.2 */
222 GLint transparentPixel
;
223 /* colors are floats scaled to ints */
224 GLint transparentRed
, transparentGreen
, transparentBlue
, transparentAlpha
;
225 GLint transparentIndex
;
227 /* ARB_multisample / SGIS_multisample */
231 /* SGIX_pbuffer / GLX 1.3 */
232 GLint maxPbufferWidth
;
233 GLint maxPbufferHeight
;
234 GLint maxPbufferPixels
;
235 GLint optimalPbufferWidth
; /* Only for SGIX_pbuffer. */
236 GLint optimalPbufferHeight
; /* Only for SGIX_pbuffer. */
238 /* OML_swap_method */
241 /* EXT_texture_from_pixmap */
242 GLint bindToTextureRgb
;
243 GLint bindToTextureRgba
;
244 GLint bindToMipmapTexture
;
245 GLint bindToTextureTargets
;
248 /* EXT_framebuffer_sRGB */
254 * \name Bit flags used for updating material values.
257 #define MAT_ATTRIB_FRONT_AMBIENT 0
258 #define MAT_ATTRIB_BACK_AMBIENT 1
259 #define MAT_ATTRIB_FRONT_DIFFUSE 2
260 #define MAT_ATTRIB_BACK_DIFFUSE 3
261 #define MAT_ATTRIB_FRONT_SPECULAR 4
262 #define MAT_ATTRIB_BACK_SPECULAR 5
263 #define MAT_ATTRIB_FRONT_EMISSION 6
264 #define MAT_ATTRIB_BACK_EMISSION 7
265 #define MAT_ATTRIB_FRONT_SHININESS 8
266 #define MAT_ATTRIB_BACK_SHININESS 9
267 #define MAT_ATTRIB_FRONT_INDEXES 10
268 #define MAT_ATTRIB_BACK_INDEXES 11
269 #define MAT_ATTRIB_MAX 12
271 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
272 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
273 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
274 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
275 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
276 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
278 #define MAT_INDEX_AMBIENT 0
279 #define MAT_INDEX_DIFFUSE 1
280 #define MAT_INDEX_SPECULAR 2
282 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
283 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
284 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
285 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
286 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
287 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
288 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
289 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
290 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
291 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
292 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
293 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
296 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
297 MAT_BIT_FRONT_AMBIENT | \
298 MAT_BIT_FRONT_DIFFUSE | \
299 MAT_BIT_FRONT_SPECULAR | \
300 MAT_BIT_FRONT_SHININESS | \
301 MAT_BIT_FRONT_INDEXES)
303 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
304 MAT_BIT_BACK_AMBIENT | \
305 MAT_BIT_BACK_DIFFUSE | \
306 MAT_BIT_BACK_SPECULAR | \
307 MAT_BIT_BACK_SHININESS | \
308 MAT_BIT_BACK_INDEXES)
310 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
319 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
327 #define LIGHT_SPOT 0x1
328 #define LIGHT_LOCAL_VIEWER 0x2
329 #define LIGHT_POSITIONAL 0x4
330 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
335 * Light source state.
339 GLfloat Ambient
[4]; /**< ambient color */
340 GLfloat Diffuse
[4]; /**< diffuse color */
341 GLfloat Specular
[4]; /**< specular color */
342 GLfloat EyePosition
[4]; /**< position in eye coordinates */
343 GLfloat SpotDirection
[4]; /**< spotlight direction in eye coordinates */
344 GLfloat SpotExponent
;
345 GLfloat SpotCutoff
; /**< in degrees */
346 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
347 GLfloat ConstantAttenuation
;
348 GLfloat LinearAttenuation
;
349 GLfloat QuadraticAttenuation
;
350 GLboolean Enabled
; /**< On/off flag */
353 * \name Derived fields
356 GLbitfield _Flags
; /**< Mask of LIGHT_x bits defined above */
358 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
359 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
360 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
361 GLfloat _NormSpotDirection
[4]; /**< normalized spotlight direction */
362 GLfloat _VP_inf_spot_attenuation
;
364 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
365 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
366 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
376 GLfloat Ambient
[4]; /**< ambient color */
377 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
378 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
379 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
380 * or GL_SEPARATE_SPECULAR_COLOR */
385 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
387 struct gl_accum_attrib
389 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
394 * Used for storing clear color, texture border color, etc.
395 * The float values are typically unclamped.
406 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
408 struct gl_colorbuffer_attrib
410 GLuint ClearIndex
; /**< Index for glClear */
411 union gl_color_union ClearColor
; /**< Color for glClear, unclamped */
412 GLuint IndexMask
; /**< Color index write mask */
413 GLubyte ColorMask
[MAX_DRAW_BUFFERS
][4]; /**< Each flag is 0xff or 0x0 */
415 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
418 * \name alpha testing
421 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
422 GLenum AlphaFunc
; /**< Alpha test function */
423 GLfloat AlphaRefUnclamped
;
424 GLclampf AlphaRef
; /**< Alpha reference value */
431 GLbitfield BlendEnabled
; /**< Per-buffer blend enable flags */
433 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
434 * control, only on the fixed-pointness of the render target.
435 * The query does however depend on fragment color clamping.
437 GLfloat BlendColorUnclamped
[4]; /**< Blending color */
438 GLfloat BlendColor
[4]; /**< Blending color */
442 GLenum SrcRGB
; /**< RGB blend source term */
443 GLenum DstRGB
; /**< RGB blend dest term */
444 GLenum SrcA
; /**< Alpha blend source term */
445 GLenum DstA
; /**< Alpha blend dest term */
446 GLenum EquationRGB
; /**< GL_ADD, GL_SUBTRACT, etc. */
447 GLenum EquationA
; /**< GL_ADD, GL_SUBTRACT, etc. */
449 * Set if any blend factor uses SRC1. Computed at the time blend factors
452 GLboolean _UsesDualSrc
;
453 } Blend
[MAX_DRAW_BUFFERS
];
454 /** Are the blend func terms currently different for each buffer/target? */
455 GLboolean _BlendFuncPerBuffer
;
456 /** Are the blend equations currently different for each buffer/target? */
457 GLboolean _BlendEquationPerBuffer
;
460 * Which advanced blending mode is in use (or BLEND_NONE).
462 * KHR_blend_equation_advanced only allows advanced blending with a single
463 * draw buffer, and NVX_blend_equation_advanced_multi_draw_buffer still
464 * requires all draw buffers to match, so we only need a single value.
466 enum gl_advanced_blend_mode _AdvancedBlendMode
;
468 /** Coherency requested via glEnable(GL_BLEND_ADVANCED_COHERENT_KHR)? */
476 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
477 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
478 GLenum LogicOp
; /**< Logic operator */
482 GLboolean DitherFlag
; /**< Dither enable flag */
484 GLboolean _ClampFragmentColor
; /** < with GL_FIXED_ONLY_ARB resolved */
485 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
486 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
488 GLboolean sRGBEnabled
; /**< Framebuffer sRGB blending/updating requested */
493 * Current attribute group (GL_CURRENT_BIT).
495 struct gl_current_attrib
498 * \name Current vertex attributes (color, texcoords, etc).
499 * \note Values are valid only after FLUSH_VERTICES has been called.
500 * \note Index and Edgeflag current values are stored as floats in the
501 * SIX and SEVEN attribute slots.
502 * \note We need double storage for 64-bit vertex attributes
504 GLfloat Attrib
[VERT_ATTRIB_MAX
][4*2];
507 * \name Current raster position attributes (always up to date after a
510 GLfloat RasterPos
[4];
511 GLfloat RasterDistance
;
512 GLfloat RasterColor
[4];
513 GLfloat RasterSecondaryColor
[4];
514 GLfloat RasterTexCoords
[MAX_TEXTURE_COORD_UNITS
][4];
515 GLboolean RasterPosValid
;
520 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
522 struct gl_depthbuffer_attrib
524 GLenum Func
; /**< Function for depth buffer compare */
525 GLclampd Clear
; /**< Value to clear depth buffer to */
526 GLboolean Test
; /**< Depth buffering enabled flag */
527 GLboolean Mask
; /**< Depth buffer writable? */
528 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
529 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
534 * Evaluator attribute group (GL_EVAL_BIT).
536 struct gl_eval_attrib
542 GLboolean Map1Color4
;
544 GLboolean Map1Normal
;
545 GLboolean Map1TextureCoord1
;
546 GLboolean Map1TextureCoord2
;
547 GLboolean Map1TextureCoord3
;
548 GLboolean Map1TextureCoord4
;
549 GLboolean Map1Vertex3
;
550 GLboolean Map1Vertex4
;
551 GLboolean Map2Color4
;
553 GLboolean Map2Normal
;
554 GLboolean Map2TextureCoord1
;
555 GLboolean Map2TextureCoord2
;
556 GLboolean Map2TextureCoord3
;
557 GLboolean Map2TextureCoord4
;
558 GLboolean Map2Vertex3
;
559 GLboolean Map2Vertex4
;
560 GLboolean AutoNormal
;
564 * \name Map Grid endpoints and divisions and calculated du values
568 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
569 GLint MapGrid2un
, MapGrid2vn
;
570 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
571 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
577 * Fog attribute group (GL_FOG_BIT).
581 GLboolean Enabled
; /**< Fog enabled flag */
582 GLboolean ColorSumEnabled
;
583 GLfloat ColorUnclamped
[4]; /**< Fog color */
584 GLfloat Color
[4]; /**< Fog color */
585 GLfloat Density
; /**< Density >= 0.0 */
586 GLfloat Start
; /**< Start distance in eye coords */
587 GLfloat End
; /**< End distance in eye coords */
588 GLfloat Index
; /**< Fog index */
589 GLenum Mode
; /**< Fog mode */
590 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
591 GLfloat _Scale
; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
592 GLenum FogDistanceMode
; /**< GL_NV_fog_distance */
597 * Hint attribute group (GL_HINT_BIT).
599 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
601 struct gl_hint_attrib
603 GLenum PerspectiveCorrection
;
606 GLenum PolygonSmooth
;
608 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
609 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
610 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
615 * Lighting attribute group (GL_LIGHT_BIT).
617 struct gl_light_attrib
619 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
620 struct gl_lightmodel Model
; /**< Lighting model */
623 * Front and back material values.
624 * Note: must call FLUSH_VERTICES() before using.
626 struct gl_material Material
;
628 GLboolean Enabled
; /**< Lighting enabled flag */
629 GLboolean ColorMaterialEnabled
;
631 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
632 GLenum ProvokingVertex
; /**< GL_EXT_provoking_vertex */
633 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
634 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
635 GLbitfield _ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
638 GLboolean _ClampVertexColor
;
639 GLenum ClampVertexColor
; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
642 * Derived state for optimizations:
645 GLbitfield _EnabledLights
; /**< bitmask containing enabled lights */
647 GLboolean _NeedEyeCoords
;
648 GLboolean _NeedVertices
; /**< Use fast shader? */
650 GLfloat _BaseColor
[2][3];
656 * Line attribute group (GL_LINE_BIT).
658 struct gl_line_attrib
660 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
661 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
662 GLushort StipplePattern
; /**< Stipple pattern */
663 GLint StippleFactor
; /**< Stipple repeat factor */
664 GLfloat Width
; /**< Line width */
669 * Display list attribute group (GL_LIST_BIT).
671 struct gl_list_attrib
678 * Multisample attribute group (GL_MULTISAMPLE_BIT).
680 struct gl_multisample_attrib
683 GLboolean SampleAlphaToCoverage
;
684 GLboolean SampleAlphaToOne
;
685 GLboolean SampleCoverage
;
686 GLboolean SampleCoverageInvert
;
687 GLboolean SampleShading
;
689 /* ARB_texture_multisample / GL3.2 additions */
690 GLboolean SampleMask
;
692 GLfloat SampleCoverageValue
;
693 GLfloat MinSampleShadingValue
;
695 /** The GL spec defines this as an array but >32x MSAA is madness */
696 GLbitfield SampleMaskValue
;
701 * A pixelmap (see glPixelMap)
706 GLfloat Map
[MAX_PIXEL_MAP_TABLE
];
711 * Collection of all pixelmaps
715 struct gl_pixelmap RtoR
; /**< i.e. GL_PIXEL_MAP_R_TO_R */
716 struct gl_pixelmap GtoG
;
717 struct gl_pixelmap BtoB
;
718 struct gl_pixelmap AtoA
;
719 struct gl_pixelmap ItoR
;
720 struct gl_pixelmap ItoG
;
721 struct gl_pixelmap ItoB
;
722 struct gl_pixelmap ItoA
;
723 struct gl_pixelmap ItoI
;
724 struct gl_pixelmap StoS
;
729 * Pixel attribute group (GL_PIXEL_MODE_BIT).
731 struct gl_pixel_attrib
733 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
735 /*--- Begin Pixel Transfer State ---*/
736 /* Fields are in the order in which they're applied... */
738 /** Scale & Bias (index shift, offset) */
740 GLfloat RedBias
, RedScale
;
741 GLfloat GreenBias
, GreenScale
;
742 GLfloat BlueBias
, BlueScale
;
743 GLfloat AlphaBias
, AlphaScale
;
744 GLfloat DepthBias
, DepthScale
;
745 GLint IndexShift
, IndexOffset
;
749 /* Note: actual pixel maps are not part of this attrib group */
750 GLboolean MapColorFlag
;
751 GLboolean MapStencilFlag
;
753 /*--- End Pixel Transfer State ---*/
756 GLfloat ZoomX
, ZoomY
;
761 * Point attribute group (GL_POINT_BIT).
763 struct gl_point_attrib
765 GLfloat Size
; /**< User-specified point size */
766 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
767 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
768 GLfloat Threshold
; /**< GL_EXT_point_parameters */
769 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
770 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
771 GLboolean PointSprite
; /**< GL_NV/ARB_point_sprite */
772 GLbitfield CoordReplace
; /**< GL_ARB_point_sprite*/
773 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
774 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
779 * Polygon attribute group (GL_POLYGON_BIT).
781 struct gl_polygon_attrib
783 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
784 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
785 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
786 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
787 GLboolean CullFlag
; /**< Culling on/off flag */
788 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
789 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
790 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
791 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
792 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
793 GLfloat OffsetClamp
; /**< Polygon offset clamp, from user */
794 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
795 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
796 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
801 * Scissor attributes (GL_SCISSOR_BIT).
803 struct gl_scissor_rect
805 GLint X
, Y
; /**< Lower left corner of box */
806 GLsizei Width
, Height
; /**< Size of box */
808 struct gl_scissor_attrib
810 GLbitfield EnableFlags
; /**< Scissor test enabled? */
811 struct gl_scissor_rect ScissorArray
[MAX_VIEWPORTS
];
812 GLint NumWindowRects
; /**< Count of enabled window rectangles */
813 GLenum WindowRectMode
; /**< Whether to include or exclude the rects */
814 struct gl_scissor_rect WindowRects
[MAX_WINDOW_RECTANGLES
];
819 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
821 * Three sets of stencil data are tracked so that OpenGL 2.0,
822 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
823 * simultaneously. In each of the stencil state arrays, element 0 corresponds
824 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
825 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
826 * GL_EXT_stencil_two_side GL_BACK state.
828 * The derived value \c _BackFace is either 1 or 2 depending on whether or
829 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
831 * The derived value \c _TestTwoSide is set when the front-face and back-face
832 * stencil state are different.
834 struct gl_stencil_attrib
836 GLboolean Enabled
; /**< Enabled flag */
837 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
838 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 2) */
839 GLboolean _Enabled
; /**< Enabled and stencil buffer present */
840 GLboolean _WriteEnabled
; /**< _Enabled and non-zero writemasks */
841 GLboolean _TestTwoSide
;
842 GLubyte _BackFace
; /**< Current back stencil state (1 or 2) */
843 GLenum Function
[3]; /**< Stencil function */
844 GLenum FailFunc
[3]; /**< Fail function */
845 GLenum ZPassFunc
[3]; /**< Depth buffer pass function */
846 GLenum ZFailFunc
[3]; /**< Depth buffer fail function */
847 GLint Ref
[3]; /**< Reference value */
848 GLuint ValueMask
[3]; /**< Value mask */
849 GLuint WriteMask
[3]; /**< Write mask */
850 GLuint Clear
; /**< Clear value */
855 * An index for each type of texture object. These correspond to the GL
856 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
857 * Note: the order is from highest priority to lowest priority.
861 TEXTURE_2D_MULTISAMPLE_INDEX
,
862 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
,
863 TEXTURE_CUBE_ARRAY_INDEX
,
864 TEXTURE_BUFFER_INDEX
,
865 TEXTURE_2D_ARRAY_INDEX
,
866 TEXTURE_1D_ARRAY_INDEX
,
867 TEXTURE_EXTERNAL_INDEX
,
878 * Bit flags for each type of texture object
881 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
882 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
883 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
884 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
885 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
886 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
887 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
888 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
889 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
890 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
891 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
892 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
897 * Texture image state. Drivers will typically create a subclass of this
898 * with extra fields for memory buffers, etc.
900 struct gl_texture_image
902 GLint InternalFormat
; /**< Internal format as given by the user */
903 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
904 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
905 * GL_INTENSITY, GL_DEPTH_COMPONENT or
906 * GL_DEPTH_STENCIL_EXT only. Used for
907 * choosing TexEnv arithmetic.
909 mesa_format TexFormat
; /**< The actual texture memory format */
911 GLuint Border
; /**< 0 or 1 */
912 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
913 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
914 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
915 GLuint Width2
; /**< = Width - 2*Border */
916 GLuint Height2
; /**< = Height - 2*Border */
917 GLuint Depth2
; /**< = Depth - 2*Border */
918 GLuint WidthLog2
; /**< = log2(Width2) */
919 GLuint HeightLog2
; /**< = log2(Height2) */
920 GLuint DepthLog2
; /**< = log2(Depth2) */
921 GLuint MaxNumLevels
; /**< = maximum possible number of mipmap
922 levels, computed from the dimensions */
924 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
925 GLuint Level
; /**< Which mipmap level am I? */
926 /** Cube map face: index into gl_texture_object::Image[] array */
929 /** GL_ARB_texture_multisample */
930 GLuint NumSamples
; /**< Sample count, or 0 for non-multisample */
931 GLboolean FixedSampleLocations
; /**< Same sample locations for all pixels? */
936 * Indexes for cube map faces.
951 * Sampler object state. These objects are new with GL_ARB_sampler_objects
952 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
954 struct gl_sampler_object
959 GLchar
*Label
; /**< GL_KHR_debug */
961 GLenum WrapS
; /**< S-axis texture image wrap mode */
962 GLenum WrapT
; /**< T-axis texture image wrap mode */
963 GLenum WrapR
; /**< R-axis texture image wrap mode */
964 GLenum MinFilter
; /**< minification filter */
965 GLenum MagFilter
; /**< magnification filter */
966 union gl_color_union BorderColor
; /**< Interpreted according to texture format */
967 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
968 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
969 GLfloat LodBias
; /**< OpenGL 1.4 */
970 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
971 GLenum CompareMode
; /**< GL_ARB_shadow */
972 GLenum CompareFunc
; /**< GL_ARB_shadow */
973 GLenum sRGBDecode
; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
974 GLboolean CubeMapSeamless
; /**< GL_AMD_seamless_cubemap_per_texture */
979 * Texture object state. Contains the array of mipmap images, border color,
980 * wrap modes, filter modes, and shadow/texcompare state.
982 struct gl_texture_object
984 mtx_t Mutex
; /**< for thread safety */
985 GLint RefCount
; /**< reference count */
986 GLuint Name
; /**< the user-visible texture object ID */
987 GLchar
*Label
; /**< GL_KHR_debug */
988 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
989 gl_texture_index TargetIndex
; /**< The gl_texture_unit::CurrentTex index.
990 Only valid when Target is valid. */
992 struct gl_sampler_object Sampler
;
994 GLenum DepthMode
; /**< GL_ARB_depth_texture */
995 bool StencilSampling
; /**< Should we sample stencil instead of depth? */
997 GLfloat Priority
; /**< in [0,1] */
998 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
999 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1000 GLint ImmutableLevels
; /**< ES 3.0 / ARB_texture_view */
1001 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1002 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1003 GLint CropRect
[4]; /**< GL_OES_draw_texture */
1004 GLenum Swizzle
[4]; /**< GL_EXT_texture_swizzle */
1005 GLuint _Swizzle
; /**< same as Swizzle, but SWIZZLE_* format */
1006 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1007 GLboolean _BaseComplete
; /**< Is the base texture level valid? */
1008 GLboolean _MipmapComplete
; /**< Is the whole mipmap valid? */
1009 GLboolean _IsIntegerFormat
; /**< Does the texture store integer values? */
1010 GLboolean _RenderToTexture
; /**< Any rendering to this texture? */
1011 GLboolean Purgeable
; /**< Is the buffer purgeable under memory
1013 GLboolean Immutable
; /**< GL_ARB_texture_storage */
1014 GLboolean _IsFloat
; /**< GL_OES_float_texture */
1015 GLboolean _IsHalfFloat
; /**< GL_OES_half_float_texture */
1017 GLuint MinLevel
; /**< GL_ARB_texture_view */
1018 GLuint MinLayer
; /**< GL_ARB_texture_view */
1019 GLuint NumLevels
; /**< GL_ARB_texture_view */
1020 GLuint NumLayers
; /**< GL_ARB_texture_view */
1022 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1023 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1025 /** GL_ARB_texture_buffer_object */
1026 struct gl_buffer_object
*BufferObject
;
1027 GLenum BufferObjectFormat
;
1028 /** Equivalent Mesa format for BufferObjectFormat. */
1029 mesa_format _BufferObjectFormat
;
1030 /** GL_ARB_texture_buffer_range */
1031 GLintptr BufferOffset
;
1032 GLsizeiptr BufferSize
; /**< if this is -1, use BufferObject->Size instead */
1034 /** GL_OES_EGL_image_external */
1035 GLint RequiredTextureImageUnits
;
1037 /** GL_ARB_shader_image_load_store */
1038 GLenum ImageFormatCompatibilityType
;
1042 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1043 #define MAX_COMBINER_TERMS 4
1047 * Texture combine environment state.
1049 struct gl_tex_env_combine_state
1051 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1052 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1053 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1054 GLenum SourceRGB
[MAX_COMBINER_TERMS
];
1055 GLenum SourceA
[MAX_COMBINER_TERMS
];
1056 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1057 GLenum OperandRGB
[MAX_COMBINER_TERMS
];
1058 GLenum OperandA
[MAX_COMBINER_TERMS
];
1059 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1060 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1061 GLuint _NumArgsRGB
; /**< Number of inputs used for the RGB combiner */
1062 GLuint _NumArgsA
; /**< Number of inputs used for the A combiner */
1067 * TexGenEnabled flags.
1074 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1079 * Bit flag versions of the corresponding GL_ constants.
1082 #define TEXGEN_SPHERE_MAP 0x1
1083 #define TEXGEN_OBJ_LINEAR 0x2
1084 #define TEXGEN_EYE_LINEAR 0x4
1085 #define TEXGEN_REFLECTION_MAP_NV 0x8
1086 #define TEXGEN_NORMAL_MAP_NV 0x10
1088 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1089 TEXGEN_REFLECTION_MAP_NV | \
1090 TEXGEN_NORMAL_MAP_NV)
1091 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1092 TEXGEN_REFLECTION_MAP_NV | \
1093 TEXGEN_NORMAL_MAP_NV | \
1099 /** Tex-gen enabled for texture unit? */
1100 #define ENABLE_TEXGEN(unit) (1 << (unit))
1102 /** Non-identity texture matrix for texture unit? */
1103 #define ENABLE_TEXMAT(unit) (1 << (unit))
1107 * Texture coord generation state.
1111 GLenum Mode
; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1112 GLbitfield _ModeBit
; /**< TEXGEN_x bit corresponding to Mode */
1113 GLfloat ObjectPlane
[4];
1114 GLfloat EyePlane
[4];
1119 * Texture unit state. Contains enable flags, texture environment/function/
1120 * combiners, texgen state, and pointers to current texture objects.
1122 struct gl_texture_unit
1124 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1126 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1127 GLclampf EnvColor
[4];
1128 GLfloat EnvColorUnclamped
[4];
1130 struct gl_texgen GenS
;
1131 struct gl_texgen GenT
;
1132 struct gl_texgen GenR
;
1133 struct gl_texgen GenQ
;
1134 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1135 GLbitfield _GenFlags
; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1137 GLfloat LodBias
; /**< for biasing mipmap levels */
1139 /** Texture targets that have a non-default texture bound */
1140 GLbitfield _BoundTextures
;
1142 /** Current sampler object (GL_ARB_sampler_objects) */
1143 struct gl_sampler_object
*Sampler
;
1146 * \name GL_EXT_texture_env_combine
1148 struct gl_tex_env_combine_state Combine
;
1151 * Derived state based on \c EnvMode and the \c BaseFormat of the
1152 * currently enabled texture.
1154 struct gl_tex_env_combine_state _EnvMode
;
1157 * Currently enabled combiner state. This will point to either
1158 * \c Combine or \c _EnvMode.
1160 struct gl_tex_env_combine_state
*_CurrentCombine
;
1162 /** Current texture object pointers */
1163 struct gl_texture_object
*CurrentTex
[NUM_TEXTURE_TARGETS
];
1165 /** Points to highest priority, complete and enabled texture object */
1166 struct gl_texture_object
*_Current
;
1172 * Texture attribute group (GL_TEXTURE_BIT).
1174 struct gl_texture_attrib
1176 GLuint CurrentUnit
; /**< GL_ACTIVE_TEXTURE */
1178 /** GL_ARB_seamless_cubemap */
1179 GLboolean CubeMapSeamless
;
1181 struct gl_texture_object
*ProxyTex
[NUM_TEXTURE_TARGETS
];
1183 /** GL_ARB_texture_buffer_object */
1184 struct gl_buffer_object
*BufferObject
;
1186 /** Texture coord units/sets used for fragment texturing */
1187 GLbitfield _EnabledCoordUnits
;
1189 /** Texture coord units that have texgen enabled */
1190 GLbitfield _TexGenEnabled
;
1192 /** Texture coord units that have non-identity matrices */
1193 GLbitfield _TexMatEnabled
;
1195 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1196 GLbitfield _GenFlags
;
1198 /** Largest index of a texture unit with _Current != NULL. */
1199 GLint _MaxEnabledTexImageUnit
;
1201 /** Largest index + 1 of texture units that have had any CurrentTex set. */
1202 GLint NumCurrentTexUsed
;
1204 struct gl_texture_unit Unit
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
];
1209 * Data structure representing a single clip plane (e.g. one of the elements
1210 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1212 typedef GLfloat gl_clip_plane
[4];
1216 * Transformation attribute group (GL_TRANSFORM_BIT).
1218 struct gl_transform_attrib
1220 GLenum MatrixMode
; /**< Matrix mode */
1221 gl_clip_plane EyeUserPlane
[MAX_CLIP_PLANES
]; /**< User clip planes */
1222 gl_clip_plane _ClipUserPlane
[MAX_CLIP_PLANES
]; /**< derived */
1223 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1224 GLboolean Normalize
; /**< Normalize all normals? */
1225 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1226 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1227 GLboolean DepthClamp
; /**< GL_ARB_depth_clamp */
1228 /** GL_ARB_clip_control */
1229 GLenum ClipOrigin
; /**< GL_LOWER_LEFT or GL_UPPER_LEFT */
1230 GLenum ClipDepthMode
; /**< GL_NEGATIVE_ONE_TO_ONE or GL_ZERO_TO_ONE */
1235 * Viewport attribute group (GL_VIEWPORT_BIT).
1237 struct gl_viewport_attrib
1239 GLfloat X
, Y
; /**< position */
1240 GLfloat Width
, Height
; /**< size */
1241 GLdouble Near
, Far
; /**< Depth buffer range */
1250 } gl_map_buffer_index
;
1254 * Fields describing a mapped buffer range.
1256 struct gl_buffer_mapping
{
1257 GLbitfield AccessFlags
; /**< Mask of GL_MAP_x_BIT flags */
1258 GLvoid
*Pointer
; /**< User-space address of mapping */
1259 GLintptr Offset
; /**< Mapped offset */
1260 GLsizeiptr Length
; /**< Mapped length */
1265 * Usages we've seen for a buffer object.
1268 USAGE_UNIFORM_BUFFER
= 0x1,
1269 USAGE_TEXTURE_BUFFER
= 0x2,
1270 USAGE_ATOMIC_COUNTER_BUFFER
= 0x4,
1271 USAGE_SHADER_STORAGE_BUFFER
= 0x8,
1272 USAGE_TRANSFORM_FEEDBACK_BUFFER
= 0x10,
1273 USAGE_PIXEL_PACK_BUFFER
= 0x20,
1274 USAGE_DISABLE_MINMAX_CACHE
= 0x40,
1279 * GL_ARB_vertex/pixel_buffer_object buffer object
1281 struct gl_buffer_object
1286 GLchar
*Label
; /**< GL_KHR_debug */
1287 GLenum Usage
; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1288 GLbitfield StorageFlags
; /**< GL_MAP_PERSISTENT_BIT, etc. */
1289 GLsizeiptrARB Size
; /**< Size of buffer storage in bytes */
1290 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1291 GLboolean DeletePending
; /**< true if buffer object is removed from the hash */
1292 GLboolean Written
; /**< Ever written to? (for debugging) */
1293 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
1294 GLboolean Immutable
; /**< GL_ARB_buffer_storage */
1295 gl_buffer_usage UsageHistory
; /**< How has this buffer been used so far? */
1297 /** Counters used for buffer usage warnings */
1298 GLuint NumSubDataCalls
;
1299 GLuint NumMapBufferWriteCalls
;
1301 struct gl_buffer_mapping Mappings
[MAP_COUNT
];
1303 /** Memoization of min/max index computations for static index buffers */
1304 struct hash_table
*MinMaxCache
;
1305 unsigned MinMaxCacheHitIndices
;
1306 unsigned MinMaxCacheMissIndices
;
1307 bool MinMaxCacheDirty
;
1312 * Client pixel packing/unpacking attributes
1314 struct gl_pixelstore_attrib
1322 GLboolean SwapBytes
;
1324 GLboolean Invert
; /**< GL_MESA_pack_invert */
1325 GLint CompressedBlockWidth
; /**< GL_ARB_compressed_texture_pixel_storage */
1326 GLint CompressedBlockHeight
;
1327 GLint CompressedBlockDepth
;
1328 GLint CompressedBlockSize
;
1329 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1334 * Client vertex array attributes
1336 struct gl_client_array
1338 GLint Size
; /**< components per element (1,2,3,4) */
1339 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1340 GLenum Format
; /**< default: GL_RGBA, but may be GL_BGRA */
1341 GLsizei StrideB
; /**< actual stride in bytes */
1342 GLuint _ElementSize
; /**< size of each element in bytes */
1343 const GLubyte
*Ptr
; /**< Points to array data */
1344 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1345 GLboolean Integer
; /**< Integer-valued? */
1346 GLboolean Doubles
; /**< double precision values are not converted to floats */
1347 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1349 struct gl_buffer_object
*BufferObj
;/**< GL_ARB_vertex_buffer_object */
1354 * Attributes to describe a vertex array.
1356 * Contains the size, type, format and normalization flag,
1357 * along with the index of a vertex buffer binding point.
1359 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1360 * and is only present for backwards compatibility reasons.
1361 * Rendering always uses VERTEX_BINDING_STRIDE.
1362 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1363 * and VERTEX_BINDING_STRIDE to the same value, while
1364 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1366 struct gl_array_attributes
1368 GLint Size
; /**< Components per element (1,2,3,4) */
1369 GLenum Type
; /**< Datatype: GL_FLOAT, GL_INT, etc */
1370 GLenum Format
; /**< Default: GL_RGBA, but may be GL_BGRA */
1371 GLsizei Stride
; /**< Stride as specified with gl*Pointer() */
1372 const GLubyte
*Ptr
; /**< Points to client array data. Not used when a VBO is bound */
1373 GLintptr RelativeOffset
; /**< Offset of the first element relative to the binding offset */
1374 GLboolean Enabled
; /**< Whether the array is enabled */
1375 GLboolean Normalized
; /**< Fixed-point values are normalized when converted to floats */
1376 GLboolean Integer
; /**< Fixed-point values are not converted to floats */
1377 GLboolean Doubles
; /**< double precision values are not converted to floats */
1378 GLuint _ElementSize
; /**< Size of each element in bytes */
1379 GLuint BufferBindingIndex
; /**< Vertex buffer binding */
1384 * This describes the buffer object used for a vertex array (or
1385 * multiple vertex arrays). If BufferObj points to the default/null
1386 * buffer object, then the vertex array lives in user memory and not a VBO.
1388 struct gl_vertex_buffer_binding
1390 GLintptr Offset
; /**< User-specified offset */
1391 GLsizei Stride
; /**< User-specified stride */
1392 GLuint InstanceDivisor
; /**< GL_ARB_instanced_arrays */
1393 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_vertex_buffer_object */
1394 GLbitfield64 _BoundArrays
; /**< Arrays bound to this binding point */
1399 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1400 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1403 struct gl_vertex_array_object
1405 /** Name of the VAO as received from glGenVertexArray. */
1410 GLchar
*Label
; /**< GL_KHR_debug */
1415 * Does the VAO use ARB semantics or Apple semantics?
1417 * There are several ways in which ARB_vertex_array_object and
1418 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1421 * - ARB VAOs require that all array data be sourced from vertex buffer
1422 * objects, but Apple VAOs do not.
1424 * - ARB VAOs require that names come from GenVertexArrays.
1426 * This flag notes which behavior governs this VAO.
1428 GLboolean ARBsemantics
;
1431 * Has this array object been bound?
1433 GLboolean EverBound
;
1436 * Derived vertex attribute arrays
1438 * This is a legacy data structure created from gl_vertex_attrib_array and
1439 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1441 struct gl_client_array _VertexAttrib
[VERT_ATTRIB_MAX
];
1443 /** Vertex attribute arrays */
1444 struct gl_array_attributes VertexAttrib
[VERT_ATTRIB_MAX
];
1446 /** Vertex buffer bindings */
1447 struct gl_vertex_buffer_binding VertexBinding
[VERT_ATTRIB_MAX
];
1449 /** Mask indicating which vertex arrays have vertex buffer associated. */
1450 GLbitfield64 VertexAttribBufferMask
;
1452 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1453 GLbitfield64 _Enabled
;
1455 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1456 GLbitfield64 NewArrays
;
1458 /** The index buffer (also known as the element array buffer in OpenGL). */
1459 struct gl_buffer_object
*IndexBufferObj
;
1463 /** Used to signal when transitioning from one kind of drawing method
1467 DRAW_NONE
, /**< Initial value only */
1474 * Enum for the OpenGL APIs we know about and may support.
1476 * NOTE: This must match the api_enum table in
1477 * src/mesa/main/get_hash_generator.py
1481 API_OPENGL_COMPAT
, /* legacy / compatibility contexts */
1485 API_OPENGL_LAST
= API_OPENGL_CORE
1489 * Vertex array state
1491 struct gl_array_attrib
1493 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1494 struct gl_vertex_array_object
*VAO
;
1496 /** The default vertex array object */
1497 struct gl_vertex_array_object
*DefaultVAO
;
1499 /** The last VAO accessed by a DSA function */
1500 struct gl_vertex_array_object
*LastLookedUpVAO
;
1502 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1503 struct _mesa_HashTable
*Objects
;
1505 GLint ActiveTexture
; /**< Client Active Texture */
1506 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1507 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1510 * \name Primitive restart controls
1512 * Primitive restart is enabled if either \c PrimitiveRestart or
1513 * \c PrimitiveRestartFixedIndex is set.
1516 GLboolean PrimitiveRestart
;
1517 GLboolean PrimitiveRestartFixedIndex
;
1518 GLboolean _PrimitiveRestart
;
1519 GLuint RestartIndex
;
1522 /** One of the DRAW_xxx flags, not consumed by drivers */
1523 gl_draw_method DrawMethod
;
1525 /* GL_ARB_vertex_buffer_object */
1526 struct gl_buffer_object
*ArrayBufferObj
;
1529 * Vertex arrays as consumed by a driver.
1530 * The array pointer is set up only by the VBO module.
1532 const struct gl_client_array
**_DrawArrays
; /**< 0..VERT_ATTRIB_MAX-1 */
1534 /** Legal array datatypes and the API for which they have been computed */
1535 GLbitfield LegalTypesMask
;
1536 gl_api LegalTypesMaskAPI
;
1541 * Feedback buffer state
1546 GLbitfield _Mask
; /**< FB_* bits */
1554 * Selection buffer state
1558 GLuint
*Buffer
; /**< selection buffer */
1559 GLuint BufferSize
; /**< size of the selection buffer */
1560 GLuint BufferCount
; /**< number of values in the selection buffer */
1561 GLuint Hits
; /**< number of records in the selection buffer */
1562 GLuint NameStackDepth
; /**< name stack depth */
1563 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1564 GLboolean HitFlag
; /**< hit flag */
1565 GLfloat HitMinZ
; /**< minimum hit depth */
1566 GLfloat HitMaxZ
; /**< maximum hit depth */
1571 * 1-D Evaluator control points
1575 GLuint Order
; /**< Number of control points */
1576 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1577 GLfloat
*Points
; /**< Points to contiguous control points */
1582 * 2-D Evaluator control points
1586 GLuint Uorder
; /**< Number of control points in U dimension */
1587 GLuint Vorder
; /**< Number of control points in V dimension */
1590 GLfloat
*Points
; /**< Points to contiguous control points */
1595 * All evaluator control point state
1597 struct gl_evaluators
1603 struct gl_1d_map Map1Vertex3
;
1604 struct gl_1d_map Map1Vertex4
;
1605 struct gl_1d_map Map1Index
;
1606 struct gl_1d_map Map1Color4
;
1607 struct gl_1d_map Map1Normal
;
1608 struct gl_1d_map Map1Texture1
;
1609 struct gl_1d_map Map1Texture2
;
1610 struct gl_1d_map Map1Texture3
;
1611 struct gl_1d_map Map1Texture4
;
1618 struct gl_2d_map Map2Vertex3
;
1619 struct gl_2d_map Map2Vertex4
;
1620 struct gl_2d_map Map2Index
;
1621 struct gl_2d_map Map2Color4
;
1622 struct gl_2d_map Map2Normal
;
1623 struct gl_2d_map Map2Texture1
;
1624 struct gl_2d_map Map2Texture2
;
1625 struct gl_2d_map Map2Texture3
;
1626 struct gl_2d_map Map2Texture4
;
1631 struct gl_transform_feedback_varying_info
1642 * Per-output info vertex shaders for transform feedback.
1644 struct gl_transform_feedback_output
1646 uint32_t OutputRegister
;
1647 uint32_t OutputBuffer
;
1648 uint32_t NumComponents
;
1651 /** offset (in DWORDs) of this output within the interleaved structure */
1655 * Offset into the output register of the data to output. For example,
1656 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1657 * offset is in the y and z components of the output register.
1659 uint32_t ComponentOffset
;
1663 struct gl_transform_feedback_buffer
1667 uint32_t NumVaryings
;
1670 * Total number of components stored in each buffer. This may be used by
1671 * hardware back-ends to determine the correct stride when interleaving
1672 * multiple transform feedback outputs in the same buffer.
1677 * Which transform feedback stream this buffer binding is associated with.
1683 /** Post-link transform feedback info. */
1684 struct gl_transform_feedback_info
1686 unsigned NumOutputs
;
1688 /* Bitmask of active buffer indices. */
1689 unsigned ActiveBuffers
;
1691 struct gl_transform_feedback_output
*Outputs
;
1693 /** Transform feedback varyings used for the linking of this shader program.
1695 * Use for glGetTransformFeedbackVarying().
1697 struct gl_transform_feedback_varying_info
*Varyings
;
1700 struct gl_transform_feedback_buffer Buffers
[MAX_FEEDBACK_BUFFERS
];
1705 * Transform feedback object state
1707 struct gl_transform_feedback_object
1709 GLuint Name
; /**< AKA the object ID */
1711 GLchar
*Label
; /**< GL_KHR_debug */
1712 GLboolean Active
; /**< Is transform feedback enabled? */
1713 GLboolean Paused
; /**< Is transform feedback paused? */
1714 GLboolean EndedAnytime
; /**< Has EndTransformFeedback been called
1716 GLboolean EverBound
; /**< Has this object been bound? */
1719 * GLES: if Active is true, remaining number of primitives which can be
1720 * rendered without overflow. This is necessary to track because GLES
1721 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1722 * glDrawArraysInstanced would overflow transform feedback buffers.
1723 * Undefined if Active is false.
1725 * Not tracked for desktop GL since it's unnecessary.
1727 unsigned GlesRemainingPrims
;
1730 * The shader program active when BeginTransformFeedback() was called.
1731 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1732 * where stage is the pipeline stage that is the source of data for
1733 * transform feedback.
1735 struct gl_shader_program
*shader_program
;
1737 /** The feedback buffers */
1738 GLuint BufferNames
[MAX_FEEDBACK_BUFFERS
];
1739 struct gl_buffer_object
*Buffers
[MAX_FEEDBACK_BUFFERS
];
1741 /** Start of feedback data in dest buffer */
1742 GLintptr Offset
[MAX_FEEDBACK_BUFFERS
];
1745 * Max data to put into dest buffer (in bytes). Computed based on
1746 * RequestedSize and the actual size of the buffer.
1748 GLsizeiptr Size
[MAX_FEEDBACK_BUFFERS
];
1751 * Size that was specified when the buffer was bound. If the buffer was
1752 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1755 GLsizeiptr RequestedSize
[MAX_FEEDBACK_BUFFERS
];
1760 * Context state for transform feedback.
1762 struct gl_transform_feedback_state
1764 GLenum Mode
; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1766 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1767 struct gl_buffer_object
*CurrentBuffer
;
1769 /** The table of all transform feedback objects */
1770 struct _mesa_HashTable
*Objects
;
1772 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1773 struct gl_transform_feedback_object
*CurrentObject
;
1775 /** The default xform-fb object (Name==0) */
1776 struct gl_transform_feedback_object
*DefaultObject
;
1781 * A "performance monitor" as described in AMD_performance_monitor.
1783 struct gl_perf_monitor_object
1787 /** True if the monitor is currently active (Begin called but not End). */
1791 * True if the monitor has ended.
1793 * This is distinct from !Active because it may never have began.
1798 * A list of groups with currently active counters.
1800 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1802 unsigned *ActiveGroups
;
1805 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1807 * Checking whether counter 'c' in group 'g' is active can be done via:
1809 * BITSET_TEST(ActiveCounters[g], c)
1811 GLuint
**ActiveCounters
;
1815 union gl_perf_monitor_counter_value
1823 struct gl_perf_monitor_counter
1825 /** Human readable name for the counter. */
1829 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1830 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1834 /** Minimum counter value. */
1835 union gl_perf_monitor_counter_value Minimum
;
1837 /** Maximum counter value. */
1838 union gl_perf_monitor_counter_value Maximum
;
1842 struct gl_perf_monitor_group
1844 /** Human readable name for the group. */
1848 * Maximum number of counters in this group which can be active at the
1851 GLuint MaxActiveCounters
;
1853 /** Array of counters within this group. */
1854 const struct gl_perf_monitor_counter
*Counters
;
1860 * Context state for AMD_performance_monitor.
1862 struct gl_perf_monitor_state
1864 /** Array of performance monitor groups (indexed by group ID) */
1865 const struct gl_perf_monitor_group
*Groups
;
1868 /** The table of all performance monitors. */
1869 struct _mesa_HashTable
*Monitors
;
1874 * Names of the various vertex/fragment program register files, etc.
1876 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1877 * All values should fit in a 4-bit field.
1879 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1880 * considered to be "uniform" variables since they can only be set outside
1881 * glBegin/End. They're also all stored in the same Parameters array.
1885 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
1886 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
1887 PROGRAM_INPUT
, /**< machine->Inputs[] */
1888 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
1889 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
1890 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
1891 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
1892 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
1893 PROGRAM_ADDRESS
, /**< machine->AddressReg */
1894 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
1895 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
1896 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
1897 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
1898 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
1899 PROGRAM_MEMORY
, /**< for shared, global and local memory */
1900 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
1906 * Base class for any kind of program object
1913 GLubyte
*String
; /**< Null-terminated program text */
1915 GLenum Target
; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
1916 GLenum Format
; /**< String encoding format */
1918 struct prog_instruction
*Instructions
;
1920 struct nir_shader
*nir
;
1922 GLbitfield64 InputsRead
; /**< Bitmask of which input regs are read */
1923 GLbitfield64 DoubleInputsRead
; /**< Bitmask of which input regs are read and are doubles */
1924 GLbitfield64 OutputsWritten
; /**< Bitmask of which output regs are written */
1925 GLbitfield64 SecondaryOutputsWritten
; /**< Subset of OutputsWritten outputs written with non-zero index. */
1926 GLbitfield64 OutputsRead
; /**< Bitmask of which output regs are read */
1927 GLbitfield PatchInputsRead
; /**< VAR[0..31] usage for patch inputs (user-defined only) */
1928 GLbitfield PatchOutputsWritten
; /**< VAR[0..31] usage for patch outputs (user-defined only) */
1929 GLbitfield SystemValuesRead
; /**< Bitmask of SYSTEM_VALUE_x inputs used */
1930 GLbitfield TexturesUsed
[MAX_COMBINED_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1931 GLbitfield SamplersUsed
; /**< Bitfield of which samplers are used */
1932 GLbitfield ShadowSamplers
; /**< Texture units used for shadow sampling. */
1933 GLbitfield ExternalSamplersUsed
; /**< Texture units used for samplerExternalOES */
1935 GLboolean UsesGather
; /**< Does this program use gather4 at all? */
1938 * For vertex and geometry shaders, true if the program uses the
1939 * gl_ClipDistance output. Ignored for fragment shaders.
1941 unsigned ClipDistanceArraySize
;
1942 unsigned CullDistanceArraySize
;
1945 /** Named parameters, constants, etc. from program text */
1946 struct gl_program_parameter_list
*Parameters
;
1949 * Local parameters used by the program.
1951 * It's dynamically allocated because it is rarely used (just
1952 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
1955 GLfloat (*LocalParams
)[4];
1957 /** Map from sampler unit to texture unit (set by glUniform1i()) */
1958 GLubyte SamplerUnits
[MAX_SAMPLERS
];
1960 /** Bitmask of which register files are read/written with indirect
1961 * addressing. Mask of (1 << PROGRAM_x) bits.
1963 GLbitfield IndirectRegisterFiles
;
1965 /** Logical counts */
1967 GLuint NumInstructions
;
1968 GLuint NumTemporaries
;
1969 GLuint NumParameters
;
1970 GLuint NumAttributes
;
1971 GLuint NumAddressRegs
;
1972 GLuint NumAluInstructions
;
1973 GLuint NumTexInstructions
;
1974 GLuint NumTexIndirections
;
1976 /** Native, actual h/w counts */
1978 GLuint NumNativeInstructions
;
1979 GLuint NumNativeTemporaries
;
1980 GLuint NumNativeParameters
;
1981 GLuint NumNativeAttributes
;
1982 GLuint NumNativeAddressRegs
;
1983 GLuint NumNativeAluInstructions
;
1984 GLuint NumNativeTexInstructions
;
1985 GLuint NumNativeTexIndirections
;
1990 /** Vertex program object */
1991 struct gl_vertex_program
1993 struct gl_program Base
; /**< base class */
1994 GLboolean IsPositionInvariant
;
1998 /** Tessellation control program object */
1999 struct gl_tess_ctrl_program
2001 struct gl_program Base
; /**< base class */
2008 /** Tessellation evaluation program object */
2009 struct gl_tess_eval_program
2011 struct gl_program Base
; /**< base class */
2014 GLenum PrimitiveMode
; /* GL_TRIANGLES, GL_QUADS or GL_ISOLINES */
2015 GLenum Spacing
; /* GL_EQUAL, GL_FRACTIONAL_EVEN, GL_FRACTIONAL_ODD */
2016 GLenum VertexOrder
; /* GL_CW or GL_CCW */
2021 /** Geometry program object */
2022 struct gl_geometry_program
2024 struct gl_program Base
; /**< base class */
2029 GLenum InputType
; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2030 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2031 GLenum OutputType
; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2032 bool UsesEndPrimitive
;
2037 /** Fragment program object */
2038 struct gl_fragment_program
2040 struct gl_program Base
; /**< base class */
2041 GLboolean UsesKill
; /**< shader uses KIL instruction */
2042 GLboolean OriginUpperLeft
;
2043 GLboolean PixelCenterInteger
;
2044 enum gl_frag_depth_layout FragDepthLayout
;
2047 * GLSL interpolation qualifier associated with each fragment shader input.
2048 * For inputs that do not have an interpolation qualifier specified in
2049 * GLSL, the value is INTERP_MODE_NONE.
2051 enum glsl_interp_mode InterpQualifier
[VARYING_SLOT_MAX
];
2054 * Bitfield indicating, for each fragment shader input, 1 if that input
2055 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2057 GLbitfield64 IsCentroid
;
2060 * Bitfield indicating, for each fragment shader input, 1 if that input
2061 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2063 GLbitfield64 IsSample
;
2067 /** Compute program object */
2068 struct gl_compute_program
2070 struct gl_program Base
; /**< base class */
2073 * Size specified using local_size_{x,y,z}.
2075 unsigned LocalSize
[3];
2078 * Size of shared variables accessed by the compute shader.
2080 unsigned SharedSize
;
2083 * Whether a variable work group size has been specified.
2085 bool LocalSizeVariable
;
2090 * State common to vertex and fragment programs.
2092 struct gl_program_state
2094 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2095 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2100 * Context state for vertex programs.
2102 struct gl_vertex_program_state
2104 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2105 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2106 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2107 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2108 /** Computed two sided lighting for fixed function/programs. */
2109 GLboolean _TwoSideEnabled
;
2110 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2112 /** Currently enabled and valid vertex program (including internal
2113 * programs, user-defined vertex programs and GLSL vertex shaders).
2114 * This is the program we must use when rendering.
2116 struct gl_vertex_program
*_Current
;
2118 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2120 /** Should fixed-function T&L be implemented with a vertex prog? */
2121 GLboolean _MaintainTnlProgram
;
2123 /** Program to emulate fixed-function T&L (see above) */
2124 struct gl_vertex_program
*_TnlProgram
;
2126 /** Cache of fixed-function programs */
2127 struct gl_program_cache
*Cache
;
2129 GLboolean _Overriden
;
2133 * Context state for tessellation control programs.
2135 struct gl_tess_ctrl_program_state
2137 /** Currently bound and valid shader. */
2138 struct gl_tess_ctrl_program
*_Current
;
2140 GLint patch_vertices
;
2141 GLfloat patch_default_outer_level
[4];
2142 GLfloat patch_default_inner_level
[2];
2146 * Context state for tessellation evaluation programs.
2148 struct gl_tess_eval_program_state
2150 /** Currently bound and valid shader. */
2151 struct gl_tess_eval_program
*_Current
;
2155 * Context state for geometry programs.
2157 struct gl_geometry_program_state
2159 /** Currently enabled and valid program (including internal programs
2160 * and compiled shader programs).
2162 struct gl_geometry_program
*_Current
;
2166 * Context state for fragment programs.
2168 struct gl_fragment_program_state
2170 GLboolean Enabled
; /**< User-set fragment program enable flag */
2171 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2172 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2174 /** Currently enabled and valid fragment program (including internal
2175 * programs, user-defined fragment programs and GLSL fragment shaders).
2176 * This is the program we must use when rendering.
2178 struct gl_fragment_program
*_Current
;
2180 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2182 /** Should fixed-function texturing be implemented with a fragment prog? */
2183 GLboolean _MaintainTexEnvProgram
;
2185 /** Program to emulate fixed-function texture env/combine (see above) */
2186 struct gl_fragment_program
*_TexEnvProgram
;
2188 /** Cache of fixed-function programs */
2189 struct gl_program_cache
*Cache
;
2194 * Context state for compute programs.
2196 struct gl_compute_program_state
2198 /** Currently enabled and valid program (including internal programs
2199 * and compiled shader programs).
2201 struct gl_compute_program
*_Current
;
2206 * ATI_fragment_shader runtime state
2209 struct atifs_instruction
;
2210 struct atifs_setupinst
;
2213 * ATI fragment shader
2215 struct ati_fragment_shader
2219 struct atifs_instruction
*Instructions
[2];
2220 struct atifs_setupinst
*SetupInst
[2];
2221 GLfloat Constants
[8][4];
2222 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2223 GLubyte numArithInstr
[2];
2224 GLubyte regsAssigned
[2];
2225 GLubyte NumPasses
; /**< 1 or 2 */
2227 GLubyte last_optype
;
2228 GLboolean interpinp1
;
2231 struct gl_program
*Program
;
2235 * Context state for GL_ATI_fragment_shader
2237 struct gl_ati_fragment_shader_state
2240 GLboolean _Enabled
; /**< enabled and valid shader? */
2241 GLboolean Compiling
;
2242 GLfloat GlobalConstants
[8][4];
2243 struct ati_fragment_shader
*Current
;
2247 * Shader subroutine function definition
2249 struct gl_subroutine_function
2253 int num_compat_types
;
2254 const struct glsl_type
**types
;
2258 * Shader information needed by both gl_shader and gl_linked shader.
2260 struct gl_shader_info
2262 bool uses_builtin_functions
;
2263 bool uses_gl_fragcoord
;
2264 bool redeclares_gl_fragcoord
;
2265 bool ARB_fragment_coord_conventions_enable
;
2268 * Fragment shader state from GLSL 1.50 layout qualifiers.
2270 bool origin_upper_left
;
2271 bool pixel_center_integer
;
2274 /** Global xfb_stride out qualifier if any */
2275 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2276 } TransformFeedback
;
2279 * Tessellation Control shader state from layout qualifiers.
2283 * 0 - vertices not declared in shader, or
2284 * 1 .. GL_MAX_PATCH_VERTICES
2290 * Tessellation Evaluation shader state from layout qualifiers.
2294 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2297 GLenum PrimitiveMode
;
2299 * GL_EQUAL, GL_FRACTIONAL_ODD, GL_FRACTIONAL_EVEN, or 0 if it's not set
2304 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2308 * 1, 0, or -1 if it's not set in this shader.
2314 * Geometry shader state from GLSL 1.50 layout qualifiers.
2319 * 0 - Invocations count not declared in shader, or
2320 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2324 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2325 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2330 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2331 * it's not set in this shader.
2337 * Whether early fragment tests are enabled as defined by
2338 * ARB_shader_image_load_store.
2340 bool EarlyFragmentTests
;
2343 * A bitmask of gl_advanced_blend_mode values
2345 GLbitfield BlendSupport
;
2348 * Compute shader state from ARB_compute_shader and
2349 * ARB_compute_variable_group_size layout qualifiers.
2353 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2354 * it's not set in this shader.
2356 unsigned LocalSize
[3];
2359 * Whether a variable work group size has been specified as defined by
2360 * ARB_compute_variable_group_size.
2362 bool LocalSizeVariable
;
2367 * A linked GLSL shader object.
2369 struct gl_linked_shader
2371 gl_shader_stage Stage
;
2373 struct gl_program
*Program
; /**< Post-compile assembly code */
2376 * \name Sampler tracking
2378 * \note Each of these fields is only set post-linking.
2381 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2382 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2383 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2387 * Map from sampler unit to texture unit (set by glUniform1i())
2389 * A sampler unit is associated with each sampler uniform by the linker.
2390 * The sampler unit associated with each uniform is stored in the
2391 * \c gl_uniform_storage::sampler field.
2393 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2394 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2395 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2398 * Number of default uniform block components used by this shader.
2400 * This field is only set post-linking.
2402 unsigned num_uniform_components
;
2405 * Number of combined uniform components used by this shader.
2407 * This field is only set post-linking. It is the sum of the uniform block
2408 * sizes divided by sizeof(float), and num_uniform_compoennts.
2410 unsigned num_combined_uniform_components
;
2412 unsigned NumUniformBlocks
;
2413 struct gl_uniform_block
**UniformBlocks
;
2415 unsigned NumShaderStorageBlocks
;
2416 struct gl_uniform_block
**ShaderStorageBlocks
;
2418 struct exec_list
*ir
;
2419 struct exec_list
*packed_varyings
;
2420 struct exec_list
*fragdata_arrays
;
2421 struct glsl_symbol_table
*symbols
;
2424 * Map from image uniform index to image unit (set by glUniform1i())
2426 * An image uniform index is associated with each image uniform by
2427 * the linker. The image index associated with each uniform is
2428 * stored in the \c gl_uniform_storage::image field.
2430 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2433 * Access qualifier specified in the shader for each image uniform
2434 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2437 * It may be different, though only more strict than the value of
2438 * \c gl_image_unit::Access for the corresponding image unit.
2440 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2443 * Number of image uniforms defined in the shader. It specifies
2444 * the number of valid elements in the \c ImageUnits and \c
2445 * ImageAccess arrays above.
2449 struct gl_active_atomic_buffer
**AtomicBuffers
;
2450 unsigned NumAtomicBuffers
;
2453 * Number of types for subroutine uniforms.
2455 GLuint NumSubroutineUniformTypes
;
2458 * Subroutine uniform remap table
2459 * based on the program level uniform remap table.
2461 GLuint NumSubroutineUniforms
; /* non-sparse total */
2462 GLuint NumSubroutineUniformRemapTable
;
2463 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
2466 * Num of subroutine functions for this stage
2467 * and storage for them.
2469 GLuint NumSubroutineFunctions
;
2470 GLuint MaxSubroutineFunctionIndex
;
2471 struct gl_subroutine_function
*SubroutineFunctions
;
2473 struct gl_shader_info info
;
2476 static inline GLbitfield
gl_external_samplers(struct gl_linked_shader
*shader
)
2478 GLbitfield external_samplers
= 0;
2479 GLbitfield mask
= shader
->active_samplers
;
2482 int idx
= u_bit_scan(&mask
);
2483 if (shader
->SamplerTargets
[idx
] == TEXTURE_EXTERNAL_INDEX
)
2484 external_samplers
|= (1 << idx
);
2487 return external_samplers
;
2491 * A GLSL shader object.
2495 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2496 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2497 * Must be the first field.
2500 gl_shader_stage Stage
;
2501 GLuint Name
; /**< AKA the handle */
2502 GLint RefCount
; /**< Reference count */
2503 GLchar
*Label
; /**< GL_KHR_debug */
2504 GLboolean DeletePending
;
2505 GLboolean CompileStatus
;
2506 bool IsES
; /**< True if this shader uses GLSL ES */
2508 GLuint SourceChecksum
; /**< for debug/logging purposes */
2509 const GLchar
*Source
; /**< Source code string */
2513 unsigned Version
; /**< GLSL version used for linking */
2515 struct exec_list
*ir
;
2516 struct glsl_symbol_table
*symbols
;
2518 struct gl_shader_info info
;
2522 struct gl_uniform_buffer_variable
2527 * Name of the uniform as seen by glGetUniformIndices.
2529 * glGetUniformIndices requires that the block instance index \b not be
2530 * present in the name of queried uniforms.
2533 * \c gl_uniform_buffer_variable::IndexName and
2534 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2538 const struct glsl_type
*Type
;
2539 unsigned int Offset
;
2544 enum gl_uniform_block_packing
2553 struct gl_uniform_block
2555 /** Declared name of the uniform block */
2558 /** Array of supplemental information about UBO ir_variables. */
2559 struct gl_uniform_buffer_variable
*Uniforms
;
2563 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2564 * with glBindBufferBase to bind a buffer object to this uniform block. When
2565 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2570 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2571 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2573 GLuint UniformBufferSize
;
2575 /** Stages that reference this block */
2579 * Layout specified in the shader
2581 * This isn't accessible through the API, but it is used while
2582 * cross-validating uniform blocks.
2584 enum gl_uniform_block_packing _Packing
;
2588 * Structure that represents a reference to an atomic buffer from some
2591 struct gl_active_atomic_buffer
2593 /** Uniform indices of the atomic counters declared within it. */
2597 /** Binding point index associated with it. */
2600 /** Minimum reasonable size it is expected to have. */
2603 /** Shader stages making use of it. */
2604 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2608 * Data container for shader queries. This holds only the minimal
2609 * amount of required information for resource queries to work.
2611 struct gl_shader_variable
2614 * Declared type of the variable
2616 const struct glsl_type
*type
;
2619 * If the variable is in an interface block, this is the type of the block.
2621 const struct glsl_type
*interface_type
;
2624 * For variables inside structs (possibly recursively), this is the
2625 * outermost struct type.
2627 const struct glsl_type
*outermost_struct_type
;
2630 * Declared name of the variable
2635 * Storage location of the base of this variable
2637 * The precise meaning of this field depends on the nature of the variable.
2639 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2640 * - Vertex shader output: one of the values from \c gl_varying_slot.
2641 * - Geometry shader input: one of the values from \c gl_varying_slot.
2642 * - Geometry shader output: one of the values from \c gl_varying_slot.
2643 * - Fragment shader input: one of the values from \c gl_varying_slot.
2644 * - Fragment shader output: one of the values from \c gl_frag_result.
2645 * - Uniforms: Per-stage uniform slot number for default uniform block.
2646 * - Uniforms: Index within the uniform block definition for UBO members.
2647 * - Non-UBO Uniforms: explicit location until linking then reused to
2648 * store uniform slot number.
2649 * - Other: This field is not currently used.
2651 * If the variable is a uniform, shader input, or shader output, and the
2652 * slot has not been assigned, the value will be -1.
2657 * Specifies the first component the variable is stored in as per
2658 * ARB_enhanced_layouts.
2660 unsigned component
:2;
2663 * Output index for dual source blending.
2666 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2672 * Specifies whether a shader input/output is per-patch in tessellation
2678 * Storage class of the variable.
2680 * \sa (n)ir_variable_mode
2685 * Interpolation mode for shader inputs / outputs
2687 * \sa glsl_interp_mode
2689 unsigned interpolation
:2;
2692 * Was the location explicitly set in the shader?
2694 * If the location is explicitly set in the shader, it \b cannot be changed
2695 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2698 unsigned explicit_location
:1;
2701 * Precision qualifier.
2703 unsigned precision
:2;
2707 * Active resource in a gl_shader_program
2709 struct gl_program_resource
2711 GLenum Type
; /** Program interface type. */
2712 const void *Data
; /** Pointer to resource associated data structure. */
2713 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2717 * A GLSL program object.
2718 * Basically a linked collection of vertex and fragment shaders.
2720 struct gl_shader_program
2722 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2723 GLuint Name
; /**< aka handle or ID */
2724 GLchar
*Label
; /**< GL_KHR_debug */
2725 GLint RefCount
; /**< Reference count */
2726 GLboolean DeletePending
;
2729 * Is the application intending to glGetProgramBinary this program?
2731 GLboolean BinaryRetreivableHint
;
2734 * Indicates whether program can be bound for individual pipeline stages
2735 * using UseProgramStages after it is next linked.
2737 GLboolean SeparateShader
;
2739 GLuint NumShaders
; /**< number of attached shaders */
2740 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2743 * User-defined attribute bindings
2745 * These are set via \c glBindAttribLocation and are used to direct the
2746 * GLSL linker. These are \b not the values used in the compiled shader,
2747 * and they are \b not the values returned by \c glGetAttribLocation.
2749 struct string_to_uint_map
*AttributeBindings
;
2752 * User-defined fragment data bindings
2754 * These are set via \c glBindFragDataLocation and are used to direct the
2755 * GLSL linker. These are \b not the values used in the compiled shader,
2756 * and they are \b not the values returned by \c glGetFragDataLocation.
2758 struct string_to_uint_map
*FragDataBindings
;
2759 struct string_to_uint_map
*FragDataIndexBindings
;
2762 * Transform feedback varyings last specified by
2763 * glTransformFeedbackVaryings().
2765 * For the current set of transform feedback varyings used for transform
2766 * feedback output, see LinkedTransformFeedback.
2770 /** Global xfb_stride out qualifier if any */
2771 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2773 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2774 } TransformFeedback
;
2776 /** Post-link transform feedback info. */
2777 struct gl_transform_feedback_info LinkedTransformFeedback
;
2779 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2780 enum gl_frag_depth_layout FragDepthLayout
;
2783 * Tessellation Evaluation shader state from layout qualifiers.
2787 * True if gl_ClipDistance is written to. Copied into
2788 * gl_tess_eval_program by _mesa_copy_linked_program_data().
2790 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2791 0 if not present. */
2792 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2793 0 if not present. */
2797 * Geometry shader state - copied into gl_geometry_program by
2798 * _mesa_copy_linked_program_data().
2804 * True if gl_ClipDistance is written to. Copied into
2805 * gl_geometry_program by _mesa_copy_linked_program_data().
2807 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2808 0 if not present. */
2809 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2810 0 if not present. */
2811 bool UsesEndPrimitive
;
2815 /** Vertex shader state */
2818 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2819 * by _mesa_copy_linked_program_data().
2821 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2822 0 if not present. */
2823 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2824 0 if not present. */
2828 * Compute shader state - copied into gl_compute_program by
2829 * _mesa_copy_linked_program_data().
2833 * If this shader contains a compute stage, size specified using
2834 * local_size_{x,y,z}. Otherwise undefined.
2836 unsigned LocalSize
[3];
2838 * Size of shared variables accessed by the compute shader.
2840 unsigned SharedSize
;
2843 * Whether a variable work group size has been specified.
2845 bool LocalSizeVariable
;
2848 /* post-link info: */
2849 unsigned NumUniformStorage
;
2850 unsigned NumHiddenUniforms
;
2851 struct gl_uniform_storage
*UniformStorage
;
2854 * Mapping from GL uniform locations returned by \c glUniformLocation to
2855 * UniformStorage entries. Arrays will have multiple contiguous slots
2856 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2858 unsigned NumUniformRemapTable
;
2859 struct gl_uniform_storage
**UniformRemapTable
;
2862 * Sometimes there are empty slots left over in UniformRemapTable after we
2863 * allocate slots to explicit locations. This list stores the blocks of
2864 * continuous empty slots inside UniformRemapTable.
2866 struct exec_list EmptyUniformLocations
;
2869 * Size of the gl_ClipDistance array that is output from the last pipeline
2870 * stage before the fragment shader.
2872 unsigned LastClipDistanceArraySize
;
2873 unsigned LastCullDistanceArraySize
;
2875 unsigned NumUniformBlocks
;
2876 struct gl_uniform_block
*UniformBlocks
;
2878 unsigned NumShaderStorageBlocks
;
2879 struct gl_uniform_block
*ShaderStorageBlocks
;
2882 * Map of active uniform names to locations
2884 * Maps any active uniform that is not an array element to a location.
2885 * Each active uniform, including individual structure members will appear
2886 * in this map. This roughly corresponds to the set of names that would be
2887 * enumerated by \c glGetActiveUniform.
2889 struct string_to_uint_map
*UniformHash
;
2891 struct gl_active_atomic_buffer
*AtomicBuffers
;
2892 unsigned NumAtomicBuffers
;
2894 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2895 GLboolean Validated
;
2896 GLboolean _Used
; /**< Ever used for drawing? */
2897 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2900 unsigned Version
; /**< GLSL version used for linking */
2901 bool IsES
; /**< True if this program uses GLSL ES */
2904 * Per-stage shaders resulting from the first stage of linking.
2906 * Set of linked shaders for this program. The array is accessed using the
2907 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2910 struct gl_linked_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2912 /** List of all active resources after linking. */
2913 struct gl_program_resource
*ProgramResourceList
;
2914 unsigned NumProgramResourceList
;
2916 /* True if any of the fragment shaders attached to this program use:
2917 * #extension ARB_fragment_coord_conventions: enable
2919 GLboolean ARB_fragment_coord_conventions_enable
;
2923 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2924 #define GLSL_LOG 0x2 /**< Write shaders to files */
2925 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2926 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2927 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2928 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2929 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2930 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2931 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2932 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2936 * Context state for GLSL vertex/fragment shaders.
2937 * Extended to support pipeline object
2939 struct gl_pipeline_object
2941 /** Name of the pipeline object as received from glGenProgramPipelines.
2942 * It would be 0 for shaders without separate shader objects.
2950 GLchar
*Label
; /**< GL_KHR_debug */
2953 * Programs used for rendering
2955 * There is a separate program set for each shader stage.
2957 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2959 struct gl_shader_program
*_CurrentFragmentProgram
;
2962 * Program used by glUniform calls.
2964 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2966 struct gl_shader_program
*ActiveProgram
;
2968 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2970 GLboolean EverBound
; /**< Has the pipeline object been created */
2972 GLboolean Validated
; /**< Pipeline Validation status */
2978 * Context state for GLSL pipeline shaders.
2980 struct gl_pipeline_shader_state
2982 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2983 struct gl_pipeline_object
*Current
;
2985 /* Default Object to ensure that _Shader is never NULL */
2986 struct gl_pipeline_object
*Default
;
2988 /** Pipeline objects */
2989 struct _mesa_HashTable
*Objects
;
2993 * Compiler options for a single GLSL shaders type
2995 struct gl_shader_compiler_options
2997 /** Driver-selectable options: */
2998 GLboolean EmitNoLoops
;
2999 GLboolean EmitNoFunctions
;
3000 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
3001 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
3002 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
3003 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
3004 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
3005 * gl_CullDistance together from
3006 * float[8] to vec4[2]
3010 * \name Forms of indirect addressing the driver cannot do.
3013 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
3014 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
3015 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
3016 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
3017 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
3020 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
3021 GLuint MaxUnrollIterations
;
3024 * Optimize code for array of structures backends.
3026 * This is a proxy for:
3027 * - preferring DP4 instructions (rather than MUL/MAD) for
3028 * matrix * vector operations, such as position transformation.
3030 GLboolean OptimizeForAOS
;
3032 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
3034 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
3035 GLboolean ClampBlockIndicesToArrayBounds
;
3037 GLboolean LowerShaderSharedVariables
; /**< Lower compute shader shared
3038 * variable access to intrinsics. */
3040 const struct nir_shader_compiler_options
*NirOptions
;
3045 * Occlusion/timer query object.
3047 struct gl_query_object
3049 GLenum Target
; /**< The query target, when active */
3050 GLuint Id
; /**< hash table ID/name */
3051 GLchar
*Label
; /**< GL_KHR_debug */
3052 GLuint64EXT Result
; /**< the counter */
3053 GLboolean Active
; /**< inside Begin/EndQuery */
3054 GLboolean Ready
; /**< result is ready? */
3055 GLboolean EverBound
;/**< has query object ever been bound */
3056 GLuint Stream
; /**< The stream */
3061 * Context state for query objects.
3063 struct gl_query_state
3065 struct _mesa_HashTable
*QueryObjects
;
3066 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
3067 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
3069 /** GL_NV_conditional_render */
3070 struct gl_query_object
*CondRenderQuery
;
3072 /** GL_EXT_transform_feedback */
3073 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
3074 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
3076 /** GL_ARB_timer_query */
3077 struct gl_query_object
*TimeElapsed
;
3079 /** GL_ARB_pipeline_statistics_query */
3080 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3082 GLenum CondRenderMode
;
3086 /** Sync object state */
3087 struct gl_sync_object
3089 GLenum Type
; /**< GL_SYNC_FENCE */
3090 GLuint Name
; /**< Fence name */
3091 GLchar
*Label
; /**< GL_KHR_debug */
3092 GLint RefCount
; /**< Reference count */
3093 GLboolean DeletePending
; /**< Object was deleted while there were still
3094 * live references (e.g., sync not yet finished)
3096 GLenum SyncCondition
;
3097 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3098 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3103 * State which can be shared by multiple contexts:
3105 struct gl_shared_state
3107 mtx_t Mutex
; /**< for thread safety */
3108 GLint RefCount
; /**< Reference count */
3109 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3110 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3111 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3113 /** Default texture objects (shared by all texture units) */
3114 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3116 /** Fallback texture used when a bound texture is incomplete */
3117 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3120 * \name Thread safety and statechange notification for texture
3123 * \todo Improve the granularity of locking.
3126 mtx_t TexMutex
; /**< texobj thread safety */
3127 GLuint TextureStateStamp
; /**< state notification for shared tex */
3130 /** Default buffer object for vertex arrays that aren't in VBOs */
3131 struct gl_buffer_object
*NullBufferObj
;
3134 * \name Vertex/geometry/fragment programs
3137 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3138 struct gl_vertex_program
*DefaultVertexProgram
;
3139 struct gl_fragment_program
*DefaultFragmentProgram
;
3142 /* GL_ATI_fragment_shader */
3143 struct _mesa_HashTable
*ATIShaders
;
3144 struct ati_fragment_shader
*DefaultFragmentShader
;
3146 struct _mesa_HashTable
*BufferObjects
;
3148 /** Table of both gl_shader and gl_shader_program objects */
3149 struct _mesa_HashTable
*ShaderObjects
;
3151 /* GL_EXT_framebuffer_object */
3152 struct _mesa_HashTable
*RenderBuffers
;
3153 struct _mesa_HashTable
*FrameBuffers
;
3156 struct set
*SyncObjects
;
3158 /** GL_ARB_sampler_objects */
3159 struct _mesa_HashTable
*SamplerObjects
;
3162 * Some context in this share group was affected by a GPU reset
3164 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3165 * been affected by a GPU reset must also return
3166 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3168 * Once this field becomes true, it is never reset to false.
3170 bool ShareGroupReset
;
3176 * Renderbuffers represent drawing surfaces such as color, depth and/or
3177 * stencil. A framebuffer object has a set of renderbuffers.
3178 * Drivers will typically derive subclasses of this type.
3180 struct gl_renderbuffer
3182 mtx_t Mutex
; /**< for thread safety */
3183 GLuint ClassID
; /**< Useful for drivers */
3185 GLchar
*Label
; /**< GL_KHR_debug */
3187 GLuint Width
, Height
;
3189 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3190 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3192 * True for renderbuffers that wrap textures, giving the driver a chance to
3193 * flush render caches through the FinishRenderTexture hook.
3195 * Drivers may also set this on renderbuffers other than those generated by
3196 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3197 * called without a rb->TexImage.
3199 GLboolean NeedsFinishRenderTexture
;
3201 GLenum InternalFormat
; /**< The user-specified format */
3202 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3203 GL_STENCIL_INDEX. */
3204 mesa_format Format
; /**< The actual renderbuffer memory format */
3206 * Pointer to the texture image if this renderbuffer wraps a texture,
3209 * Note that the reference on the gl_texture_object containing this
3210 * TexImage is held by the gl_renderbuffer_attachment.
3212 struct gl_texture_image
*TexImage
;
3214 /** Delete this renderbuffer */
3215 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3217 /** Allocate new storage for this renderbuffer */
3218 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3219 struct gl_renderbuffer
*rb
,
3220 GLenum internalFormat
,
3221 GLuint width
, GLuint height
);
3226 * A renderbuffer attachment points to either a texture object (and specifies
3227 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3229 struct gl_renderbuffer_attachment
3231 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3235 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3236 * application supplied renderbuffer object.
3238 struct gl_renderbuffer
*Renderbuffer
;
3241 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3242 * supplied texture object.
3244 struct gl_texture_object
*Texture
;
3245 GLuint TextureLevel
; /**< Attached mipmap level. */
3246 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3247 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3248 * and 2D array textures */
3254 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3255 * In C++ terms, think of this as a base class from which device drivers
3256 * will make derived classes.
3258 struct gl_framebuffer
3260 mtx_t Mutex
; /**< for thread safety */
3262 * If zero, this is a window system framebuffer. If non-zero, this
3263 * is a FBO framebuffer; note that for some devices (i.e. those with
3264 * a natural pixel coordinate system for FBOs that differs from the
3265 * OpenGL/Mesa coordinate system), this means that the viewport,
3266 * polygon face orientation, and polygon stipple will have to be inverted.
3271 GLchar
*Label
; /**< GL_KHR_debug */
3273 GLboolean DeletePending
;
3276 * The framebuffer's visual. Immutable if this is a window system buffer.
3277 * Computed from attachments if user-made FBO.
3279 struct gl_config Visual
;
3282 * Size of frame buffer in pixels. If there are no attachments, then both
3285 GLuint Width
, Height
;
3288 * In the case that the framebuffer has no attachment (i.e.
3289 * GL_ARB_framebuffer_no_attachments) then the geometry of
3290 * the framebuffer is specified by the default values.
3293 GLuint Width
, Height
, Layers
, NumSamples
;
3294 GLboolean FixedSampleLocations
;
3295 /* Derived from NumSamples by the driver so that it can choose a valid
3296 * value for the hardware.
3301 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3302 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3303 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3310 /** \name Derived Z buffer stuff */
3312 GLuint _DepthMax
; /**< Max depth buffer value */
3313 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3314 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3317 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3320 /** Whether one of Attachment has Type != GL_NONE
3321 * NOTE: the values for Width and Height are set to 0 in case of having
3322 * no attachments, a backend driver supporting the extension
3323 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3324 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3325 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3326 * _Ymax do NOT take into account _HasAttachments being false). To get the
3327 * geometry of the framebuffer, the helper functions
3328 * _mesa_geometric_width(),
3329 * _mesa_geometric_height(),
3330 * _mesa_geometric_samples() and
3331 * _mesa_geometric_layers()
3332 * are available that check _HasAttachments.
3334 bool _HasAttachments
;
3336 GLbitfield _IntegerBuffers
; /**< Which color buffers are integer valued */
3338 /* ARB_color_buffer_float */
3339 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3340 GLboolean _HasSNormOrFloatColorBuffer
;
3343 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3344 * is not layered. For cube maps and cube map arrays, each cube face
3345 * counts as a layer. As the case for Width, Height a backend driver
3346 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3347 * in the case that _HasAttachments is false
3349 GLuint MaxNumLayers
;
3351 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3352 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3354 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3355 * attribute group and GL_PIXEL attribute group, respectively.
3357 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3358 GLenum ColorReadBuffer
;
3360 /** Computed from ColorDraw/ReadBuffer above */
3361 GLuint _NumColorDrawBuffers
;
3362 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3363 GLint _ColorReadBufferIndex
; /* -1 = None */
3364 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3365 struct gl_renderbuffer
*_ColorReadBuffer
;
3367 /** Delete this framebuffer */
3368 void (*Delete
)(struct gl_framebuffer
*fb
);
3373 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3377 GLushort RangeMin
; /**< min value exponent */
3378 GLushort RangeMax
; /**< max value exponent */
3379 GLushort Precision
; /**< number of mantissa bits */
3384 * Limits for vertex, geometry and fragment programs/shaders.
3386 struct gl_program_constants
3388 /* logical limits */
3389 GLuint MaxInstructions
;
3390 GLuint MaxAluInstructions
;
3391 GLuint MaxTexInstructions
;
3392 GLuint MaxTexIndirections
;
3395 GLuint MaxAddressRegs
;
3396 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3397 GLuint MaxParameters
;
3398 GLuint MaxLocalParams
;
3399 GLuint MaxEnvParams
;
3400 /* native/hardware limits */
3401 GLuint MaxNativeInstructions
;
3402 GLuint MaxNativeAluInstructions
;
3403 GLuint MaxNativeTexInstructions
;
3404 GLuint MaxNativeTexIndirections
;
3405 GLuint MaxNativeAttribs
;
3406 GLuint MaxNativeTemps
;
3407 GLuint MaxNativeAddressRegs
;
3408 GLuint MaxNativeParameters
;
3410 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3413 * \name Per-stage input / output limits
3415 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3416 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3417 * ES). This is stored as \c gl_constants::MaxVarying.
3419 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3420 * variables. Each stage as a certain number of outputs that it can feed
3421 * to the next stage and a certain number inputs that it can consume from
3422 * the previous stage.
3424 * Vertex shader inputs do not participate this in this accounting.
3425 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3427 * Fragment shader outputs do not participate this in this accounting.
3428 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3431 GLuint MaxInputComponents
;
3432 GLuint MaxOutputComponents
;
3435 /* ES 2.0 and GL_ARB_ES2_compatibility */
3436 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3437 struct gl_precision LowInt
, MediumInt
, HighInt
;
3438 /* GL_ARB_uniform_buffer_object */
3439 GLuint MaxUniformBlocks
;
3440 GLuint MaxCombinedUniformComponents
;
3441 GLuint MaxTextureImageUnits
;
3443 /* GL_ARB_shader_atomic_counters */
3444 GLuint MaxAtomicBuffers
;
3445 GLuint MaxAtomicCounters
;
3447 /* GL_ARB_shader_image_load_store */
3448 GLuint MaxImageUniforms
;
3450 /* GL_ARB_shader_storage_buffer_object */
3451 GLuint MaxShaderStorageBlocks
;
3456 * Constants which may be overridden by device driver during context creation
3457 * but are never changed after that.
3461 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3462 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3463 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3464 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3465 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3466 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3467 GLuint MaxTextureCoordUnits
;
3468 GLuint MaxCombinedTextureImageUnits
;
3469 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3470 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3471 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3472 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3474 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3476 GLuint MaxArrayLockSize
;
3480 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3481 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3482 GLfloat PointSizeGranularity
;
3483 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3484 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3485 GLfloat LineWidthGranularity
;
3487 GLuint MaxClipPlanes
;
3489 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3490 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3492 GLuint MaxViewportWidth
, MaxViewportHeight
;
3493 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3494 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3498 } ViewportBounds
; /**< GL_ARB_viewport_array */
3499 GLuint MaxWindowRectangles
; /**< GL_EXT_window_rectangles */
3501 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3502 GLuint MaxProgramMatrices
;
3503 GLuint MaxProgramMatrixStackDepth
;
3506 GLuint SamplesPassed
;
3509 GLuint PrimitivesGenerated
;
3510 GLuint PrimitivesWritten
;
3511 GLuint VerticesSubmitted
;
3512 GLuint PrimitivesSubmitted
;
3513 GLuint VsInvocations
;
3515 GLuint TessInvocations
;
3516 GLuint GsInvocations
;
3517 GLuint GsPrimitives
;
3518 GLuint FsInvocations
;
3519 GLuint ComputeInvocations
;
3520 GLuint ClInPrimitives
;
3521 GLuint ClOutPrimitives
;
3524 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3526 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3527 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3528 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3531 * GL_ARB_framebuffer_no_attachments
3533 GLuint MaxFramebufferWidth
;
3534 GLuint MaxFramebufferHeight
;
3535 GLuint MaxFramebufferLayers
;
3536 GLuint MaxFramebufferSamples
;
3538 /** Number of varying vectors between any two shader stages. */
3542 * GL_ARB_uniform_buffer_object
3544 GLuint MaxCombinedUniformBlocks
;
3545 GLuint MaxUniformBufferBindings
;
3546 GLuint MaxUniformBlockSize
;
3547 GLuint UniformBufferOffsetAlignment
;
3551 * GL_ARB_shader_storage_buffer_object
3553 GLuint MaxCombinedShaderStorageBlocks
;
3554 GLuint MaxShaderStorageBufferBindings
;
3555 GLuint MaxShaderStorageBlockSize
;
3556 GLuint ShaderStorageBufferOffsetAlignment
;
3560 * GL_ARB_explicit_uniform_location
3562 GLuint MaxUserAssignableUniformLocations
;
3564 /** geometry shader */
3565 GLuint MaxGeometryOutputVertices
;
3566 GLuint MaxGeometryTotalOutputComponents
;
3568 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3571 * Changes default GLSL extension behavior from "error" to "warn". It's out
3572 * of spec, but it can make some apps work that otherwise wouldn't.
3574 GLboolean ForceGLSLExtensionsWarn
;
3577 * If non-zero, forces GLSL shaders to behave as if they began
3578 * with "#version ForceGLSLVersion".
3580 GLuint ForceGLSLVersion
;
3583 * Allow GLSL #extension directives in the middle of shaders.
3585 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3588 * Force uninitialized variables to default to zero.
3590 GLboolean GLSLZeroInit
;
3593 * Does the driver support real 32-bit integers? (Otherwise, integers are
3594 * simulated via floats.)
3596 GLboolean NativeIntegers
;
3599 * Does VertexID count from zero or from base vertex?
3602 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3603 * ignored and need not be set.
3605 bool VertexID_is_zero_based
;
3608 * If the driver supports real 32-bit integers, what integer value should be
3609 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3611 GLuint UniformBooleanTrue
;
3614 * Maximum amount of time, measured in nanseconds, that the server can wait.
3616 GLuint64 MaxServerWaitTimeout
;
3618 /** GL_EXT_provoking_vertex */
3619 GLboolean QuadsFollowProvokingVertexConvention
;
3621 /** GL_ARB_viewport_array */
3622 GLenum LayerAndVPIndexProvokingVertex
;
3624 /** OpenGL version 3.0 */
3625 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3627 /** OpenGL version 3.2 */
3628 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3630 /** OpenGL version 4.4 */
3631 GLuint MaxVertexAttribStride
;
3633 /** GL_EXT_transform_feedback */
3634 GLuint MaxTransformFeedbackBuffers
;
3635 GLuint MaxTransformFeedbackSeparateComponents
;
3636 GLuint MaxTransformFeedbackInterleavedComponents
;
3637 GLuint MaxVertexStreams
;
3639 /** GL_EXT_gpu_shader4 */
3640 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3642 /** GL_ARB_texture_gather */
3643 GLuint MinProgramTextureGatherOffset
;
3644 GLuint MaxProgramTextureGatherOffset
;
3645 GLuint MaxProgramTextureGatherComponents
;
3647 /* GL_ARB_robustness */
3648 GLenum ResetStrategy
;
3650 /* GL_ARB_blend_func_extended */
3651 GLuint MaxDualSourceDrawBuffers
;
3654 * Whether the implementation strips out and ignores texture borders.
3656 * Many GPU hardware implementations don't support rendering with texture
3657 * borders and mipmapped textures. (Note: not static border color, but the
3658 * old 1-pixel border around each edge). Implementations then have to do
3659 * slow fallbacks to be correct, or just ignore the border and be fast but
3660 * wrong. Setting the flag strips the border off of TexImage calls,
3661 * providing "fast but wrong" at significantly reduced driver complexity.
3663 * Texture borders are deprecated in GL 3.0.
3665 GLboolean StripTextureBorder
;
3668 * For drivers which can do a better job at eliminating unused uniforms
3669 * than the GLSL compiler.
3671 * XXX Remove these as soon as a better solution is available.
3673 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3675 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3676 bool GLSLFragCoordIsSysVal
;
3677 bool GLSLFrontFacingIsSysVal
;
3680 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3681 * than passing the transform feedback object to the drawing function.
3683 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3685 /** GL_ARB_map_buffer_alignment */
3686 GLuint MinMapBufferAlignment
;
3689 * Disable varying packing. This is out of spec, but potentially useful
3690 * for older platforms that supports a limited number of texture
3691 * indirections--on these platforms, unpacking the varyings in the fragment
3692 * shader increases the number of texture indirections by 1, which might
3693 * make some shaders not executable at all.
3695 * Drivers that support transform feedback must set this value to GL_FALSE.
3697 GLboolean DisableVaryingPacking
;
3700 * Should meaningful names be generated for compiler temporary variables?
3702 * Generally, it is not useful to have the compiler generate "meaningful"
3703 * names for temporary variables that it creates. This can, however, be a
3704 * useful debugging aid. In Mesa debug builds or release builds when
3705 * MESA_GLSL is set at run-time, meaningful names will be generated.
3706 * Drivers can also force names to be generated by setting this field.
3707 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3708 * vertex shader assembly) is set at run-time.
3710 bool GenerateTemporaryNames
;
3713 * Maximum value supported for an index in DrawElements and friends.
3715 * This must be at least (1ull<<24)-1. The default value is
3718 * \since ES 3.0 or GL_ARB_ES3_compatibility
3719 * \sa _mesa_init_constants
3721 GLuint64 MaxElementIndex
;
3724 * Disable interpretation of line continuations (lines ending with a
3725 * backslash character ('\') in GLSL source.
3727 GLboolean DisableGLSLLineContinuations
;
3729 /** GL_ARB_texture_multisample */
3730 GLint MaxColorTextureSamples
;
3731 GLint MaxDepthTextureSamples
;
3732 GLint MaxIntegerSamples
;
3735 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3736 * samples are laid out in a rectangular grid roughly corresponding to
3737 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3738 * are used to map indices of rectangular grid to sample numbers within
3739 * a pixel. This mapping of indices to sample numbers must be initialized
3740 * by the driver for the target hardware. For example, if we have the 8X
3741 * MSAA sample number layout (sample positions) for XYZ hardware:
3743 * sample indices layout sample number layout
3744 * --------- ---------
3745 * | 0 | 1 | | a | b |
3746 * --------- ---------
3747 * | 2 | 3 | | c | d |
3748 * --------- ---------
3749 * | 4 | 5 | | e | f |
3750 * --------- ---------
3751 * | 6 | 7 | | g | h |
3752 * --------- ---------
3754 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3756 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3758 * SampleMap8x = {a, b, c, d, e, f, g, h};
3760 * Follow the logic for sample counts 2-8.
3762 * For 16x the sample indices layout as a 4x4 grid as follows:
3774 uint8_t SampleMap2x
[2];
3775 uint8_t SampleMap4x
[4];
3776 uint8_t SampleMap8x
[8];
3777 uint8_t SampleMap16x
[16];
3779 /** GL_ARB_shader_atomic_counters */
3780 GLuint MaxAtomicBufferBindings
;
3781 GLuint MaxAtomicBufferSize
;
3782 GLuint MaxCombinedAtomicBuffers
;
3783 GLuint MaxCombinedAtomicCounters
;
3785 /** GL_ARB_vertex_attrib_binding */
3786 GLint MaxVertexAttribRelativeOffset
;
3787 GLint MaxVertexAttribBindings
;
3789 /* GL_ARB_shader_image_load_store */
3790 GLuint MaxImageUnits
;
3791 GLuint MaxCombinedShaderOutputResources
;
3792 GLuint MaxImageSamples
;
3793 GLuint MaxCombinedImageUniforms
;
3795 /** GL_ARB_compute_shader */
3796 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3797 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3798 GLuint MaxComputeWorkGroupInvocations
;
3799 GLuint MaxComputeSharedMemorySize
;
3801 /** GL_ARB_compute_variable_group_size */
3802 GLuint MaxComputeVariableGroupSize
[3]; /* Array of x, y, z dimensions */
3803 GLuint MaxComputeVariableGroupInvocations
;
3805 /** GL_ARB_gpu_shader5 */
3806 GLfloat MinFragmentInterpolationOffset
;
3807 GLfloat MaxFragmentInterpolationOffset
;
3809 GLboolean FakeSWMSAA
;
3811 /** GL_KHR_context_flush_control */
3812 GLenum ContextReleaseBehavior
;
3814 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3816 /** GL_ARB_tessellation_shader */
3817 GLuint MaxPatchVertices
;
3818 GLuint MaxTessGenLevel
;
3819 GLuint MaxTessPatchComponents
;
3820 GLuint MaxTessControlTotalOutputComponents
;
3821 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3822 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3823 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3824 bool PrimitiveRestartForPatches
;
3825 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3826 * gl_LocalInvocationIndex based on
3827 * other builtin variables. */
3829 /** GL_OES_primitive_bounding_box */
3830 bool NoPrimitiveBoundingBoxOutput
;
3835 * Enable flag for each OpenGL extension. Different device drivers will
3836 * enable different extensions at runtime.
3838 struct gl_extensions
3840 GLboolean dummy
; /* don't remove this! */
3841 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3842 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3843 GLboolean ANGLE_texture_compression_dxt
;
3844 GLboolean ARB_ES2_compatibility
;
3845 GLboolean ARB_ES3_compatibility
;
3846 GLboolean ARB_ES3_1_compatibility
;
3847 GLboolean ARB_ES3_2_compatibility
;
3848 GLboolean ARB_arrays_of_arrays
;
3849 GLboolean ARB_base_instance
;
3850 GLboolean ARB_blend_func_extended
;
3851 GLboolean ARB_buffer_storage
;
3852 GLboolean ARB_clear_texture
;
3853 GLboolean ARB_clip_control
;
3854 GLboolean ARB_color_buffer_float
;
3855 GLboolean ARB_compute_shader
;
3856 GLboolean ARB_compute_variable_group_size
;
3857 GLboolean ARB_conditional_render_inverted
;
3858 GLboolean ARB_conservative_depth
;
3859 GLboolean ARB_copy_image
;
3860 GLboolean ARB_cull_distance
;
3861 GLboolean ARB_depth_buffer_float
;
3862 GLboolean ARB_depth_clamp
;
3863 GLboolean ARB_depth_texture
;
3864 GLboolean ARB_derivative_control
;
3865 GLboolean ARB_draw_buffers_blend
;
3866 GLboolean ARB_draw_elements_base_vertex
;
3867 GLboolean ARB_draw_indirect
;
3868 GLboolean ARB_draw_instanced
;
3869 GLboolean ARB_fragment_coord_conventions
;
3870 GLboolean ARB_fragment_layer_viewport
;
3871 GLboolean ARB_fragment_program
;
3872 GLboolean ARB_fragment_program_shadow
;
3873 GLboolean ARB_fragment_shader
;
3874 GLboolean ARB_framebuffer_no_attachments
;
3875 GLboolean ARB_framebuffer_object
;
3876 GLboolean ARB_enhanced_layouts
;
3877 GLboolean ARB_explicit_attrib_location
;
3878 GLboolean ARB_explicit_uniform_location
;
3879 GLboolean ARB_gpu_shader5
;
3880 GLboolean ARB_gpu_shader_fp64
;
3881 GLboolean ARB_half_float_vertex
;
3882 GLboolean ARB_indirect_parameters
;
3883 GLboolean ARB_instanced_arrays
;
3884 GLboolean ARB_internalformat_query
;
3885 GLboolean ARB_internalformat_query2
;
3886 GLboolean ARB_map_buffer_range
;
3887 GLboolean ARB_occlusion_query
;
3888 GLboolean ARB_occlusion_query2
;
3889 GLboolean ARB_pipeline_statistics_query
;
3890 GLboolean ARB_point_sprite
;
3891 GLboolean ARB_query_buffer_object
;
3892 GLboolean ARB_robust_buffer_access_behavior
;
3893 GLboolean ARB_sample_shading
;
3894 GLboolean ARB_seamless_cube_map
;
3895 GLboolean ARB_shader_atomic_counter_ops
;
3896 GLboolean ARB_shader_atomic_counters
;
3897 GLboolean ARB_shader_bit_encoding
;
3898 GLboolean ARB_shader_clock
;
3899 GLboolean ARB_shader_draw_parameters
;
3900 GLboolean ARB_shader_group_vote
;
3901 GLboolean ARB_shader_image_load_store
;
3902 GLboolean ARB_shader_image_size
;
3903 GLboolean ARB_shader_precision
;
3904 GLboolean ARB_shader_stencil_export
;
3905 GLboolean ARB_shader_storage_buffer_object
;
3906 GLboolean ARB_shader_subroutine
;
3907 GLboolean ARB_shader_texture_image_samples
;
3908 GLboolean ARB_shader_texture_lod
;
3909 GLboolean ARB_shader_viewport_layer_array
;
3910 GLboolean ARB_shading_language_packing
;
3911 GLboolean ARB_shading_language_420pack
;
3912 GLboolean ARB_shadow
;
3913 GLboolean ARB_stencil_texturing
;
3915 GLboolean ARB_tessellation_shader
;
3916 GLboolean ARB_texture_border_clamp
;
3917 GLboolean ARB_texture_buffer_object
;
3918 GLboolean ARB_texture_buffer_object_rgb32
;
3919 GLboolean ARB_texture_buffer_range
;
3920 GLboolean ARB_texture_compression_bptc
;
3921 GLboolean ARB_texture_compression_rgtc
;
3922 GLboolean ARB_texture_cube_map
;
3923 GLboolean ARB_texture_cube_map_array
;
3924 GLboolean ARB_texture_env_combine
;
3925 GLboolean ARB_texture_env_crossbar
;
3926 GLboolean ARB_texture_env_dot3
;
3927 GLboolean ARB_texture_float
;
3928 GLboolean ARB_texture_gather
;
3929 GLboolean ARB_texture_mirror_clamp_to_edge
;
3930 GLboolean ARB_texture_multisample
;
3931 GLboolean ARB_texture_non_power_of_two
;
3932 GLboolean ARB_texture_stencil8
;
3933 GLboolean ARB_texture_query_levels
;
3934 GLboolean ARB_texture_query_lod
;
3935 GLboolean ARB_texture_rg
;
3936 GLboolean ARB_texture_rgb10_a2ui
;
3937 GLboolean ARB_texture_view
;
3938 GLboolean ARB_timer_query
;
3939 GLboolean ARB_transform_feedback2
;
3940 GLboolean ARB_transform_feedback3
;
3941 GLboolean ARB_transform_feedback_instanced
;
3942 GLboolean ARB_uniform_buffer_object
;
3943 GLboolean ARB_vertex_attrib_64bit
;
3944 GLboolean ARB_vertex_program
;
3945 GLboolean ARB_vertex_shader
;
3946 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3947 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3948 GLboolean ARB_viewport_array
;
3949 GLboolean EXT_blend_color
;
3950 GLboolean EXT_blend_equation_separate
;
3951 GLboolean EXT_blend_func_separate
;
3952 GLboolean EXT_blend_minmax
;
3953 GLboolean EXT_depth_bounds_test
;
3954 GLboolean EXT_draw_buffers2
;
3955 GLboolean EXT_framebuffer_multisample
;
3956 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3957 GLboolean EXT_framebuffer_sRGB
;
3958 GLboolean EXT_gpu_program_parameters
;
3959 GLboolean EXT_gpu_shader4
;
3960 GLboolean EXT_packed_float
;
3961 GLboolean EXT_pixel_buffer_object
;
3962 GLboolean EXT_point_parameters
;
3963 GLboolean EXT_polygon_offset_clamp
;
3964 GLboolean EXT_provoking_vertex
;
3965 GLboolean EXT_shader_integer_mix
;
3966 GLboolean EXT_shader_samples_identical
;
3967 GLboolean EXT_stencil_two_side
;
3968 GLboolean EXT_texture_array
;
3969 GLboolean EXT_texture_compression_latc
;
3970 GLboolean EXT_texture_compression_s3tc
;
3971 GLboolean EXT_texture_env_dot3
;
3972 GLboolean EXT_texture_filter_anisotropic
;
3973 GLboolean EXT_texture_integer
;
3974 GLboolean EXT_texture_mirror_clamp
;
3975 GLboolean EXT_texture_shared_exponent
;
3976 GLboolean EXT_texture_snorm
;
3977 GLboolean EXT_texture_sRGB
;
3978 GLboolean EXT_texture_sRGB_decode
;
3979 GLboolean EXT_texture_swizzle
;
3980 GLboolean EXT_transform_feedback
;
3981 GLboolean EXT_timer_query
;
3982 GLboolean EXT_vertex_array_bgra
;
3983 GLboolean EXT_window_rectangles
;
3984 GLboolean OES_copy_image
;
3985 GLboolean OES_primitive_bounding_box
;
3986 GLboolean OES_sample_variables
;
3987 GLboolean OES_standard_derivatives
;
3988 GLboolean OES_texture_buffer
;
3989 GLboolean OES_texture_cube_map_array
;
3990 GLboolean OES_viewport_array
;
3991 /* vendor extensions */
3992 GLboolean AMD_performance_monitor
;
3993 GLboolean AMD_pinned_memory
;
3994 GLboolean AMD_seamless_cubemap_per_texture
;
3995 GLboolean AMD_vertex_shader_layer
;
3996 GLboolean AMD_vertex_shader_viewport_index
;
3997 GLboolean ANDROID_extension_pack_es31a
;
3998 GLboolean APPLE_object_purgeable
;
3999 GLboolean ATI_meminfo
;
4000 GLboolean ATI_texture_compression_3dc
;
4001 GLboolean ATI_texture_mirror_once
;
4002 GLboolean ATI_texture_env_combine3
;
4003 GLboolean ATI_fragment_shader
;
4004 GLboolean ATI_separate_stencil
;
4005 GLboolean GREMEDY_string_marker
;
4006 GLboolean INTEL_performance_query
;
4007 GLboolean KHR_blend_equation_advanced
;
4008 GLboolean KHR_blend_equation_advanced_coherent
;
4009 GLboolean KHR_robustness
;
4010 GLboolean KHR_texture_compression_astc_hdr
;
4011 GLboolean KHR_texture_compression_astc_ldr
;
4012 GLboolean KHR_texture_compression_astc_sliced_3d
;
4013 GLboolean MESA_pack_invert
;
4014 GLboolean MESA_shader_framebuffer_fetch
;
4015 GLboolean MESA_shader_framebuffer_fetch_non_coherent
;
4016 GLboolean MESA_shader_integer_functions
;
4017 GLboolean MESA_ycbcr_texture
;
4018 GLboolean NV_conditional_render
;
4019 GLboolean NV_fog_distance
;
4020 GLboolean NV_point_sprite
;
4021 GLboolean NV_primitive_restart
;
4022 GLboolean NV_texture_barrier
;
4023 GLboolean NV_texture_env_combine4
;
4024 GLboolean NV_texture_rectangle
;
4025 GLboolean NV_vdpau_interop
;
4026 GLboolean NVX_gpu_memory_info
;
4027 GLboolean TDFX_texture_compression_FXT1
;
4028 GLboolean OES_EGL_image
;
4029 GLboolean OES_draw_texture
;
4030 GLboolean OES_depth_texture_cube_map
;
4031 GLboolean OES_EGL_image_external
;
4032 GLboolean OES_texture_float
;
4033 GLboolean OES_texture_float_linear
;
4034 GLboolean OES_texture_half_float
;
4035 GLboolean OES_texture_half_float_linear
;
4036 GLboolean OES_compressed_ETC1_RGB8_texture
;
4037 GLboolean OES_geometry_shader
;
4038 GLboolean OES_texture_compression_astc
;
4039 GLboolean extension_sentinel
;
4040 /** The extension string */
4041 const GLubyte
*String
;
4042 /** Number of supported extensions */
4045 * The context version which extension helper functions compare against.
4046 * By default, the value is equal to ctx->Version. This changes to ~0
4047 * while meta is in progress.
4054 * A stack of matrices (projection, modelview, color, texture, etc).
4056 struct gl_matrix_stack
4058 GLmatrix
*Top
; /**< points into Stack */
4059 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
4060 unsigned StackSize
; /**< Number of elements in Stack */
4061 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
4062 GLuint MaxDepth
; /**< size of Stack[] array */
4063 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
4068 * \name Bits for image transfer operations
4069 * \sa __struct gl_contextRec::ImageTransferState.
4072 #define IMAGE_SCALE_BIAS_BIT 0x1
4073 #define IMAGE_SHIFT_OFFSET_BIT 0x2
4074 #define IMAGE_MAP_COLOR_BIT 0x4
4075 #define IMAGE_CLAMP_BIT 0x800
4078 /** Pixel Transfer ops */
4079 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4080 IMAGE_SHIFT_OFFSET_BIT | \
4081 IMAGE_MAP_COLOR_BIT)
4084 * \name Bits to indicate what state has changed.
4087 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4088 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4089 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4090 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4091 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4092 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4093 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4094 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4095 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4096 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4097 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4098 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4099 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4100 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4101 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4102 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4103 #define _NEW_TEXTURE (1u << 16) /**< gl_context::Texture */
4104 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4105 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4106 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4107 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4108 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4109 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4110 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4111 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4112 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4113 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4114 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4115 #define _NEW_BUFFER_OBJECT (1u << 28)
4116 #define _NEW_FRAG_CLAMP (1u << 29)
4117 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4118 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4124 * Composite state flags
4127 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4133 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4143 /* This has to be included here. */
4148 * Display list flags.
4149 * Strictly this is a tnl-private concept, but it doesn't seem
4150 * worthwhile adding a tnl private structure just to hold this one bit
4153 #define DLIST_DANGLING_REFS 0x1
4156 /** Opaque declaration of display list payload data type */
4157 union gl_dlist_node
;
4161 * Provide a location where information about a display list can be
4162 * collected. Could be extended with driverPrivate structures,
4163 * etc. in the future.
4165 struct gl_display_list
4168 GLchar
*Label
; /**< GL_KHR_debug */
4169 GLbitfield Flags
; /**< DLIST_x flags */
4170 /** The dlist commands are in a linked list of nodes */
4171 union gl_dlist_node
*Head
;
4176 * State used during display list compilation and execution.
4178 struct gl_dlist_state
4180 GLuint CallDepth
; /**< Current recursion calling depth */
4182 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4183 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4184 GLuint CurrentPos
; /**< Index into current block of nodes */
4186 GLvertexformat ListVtxfmt
;
4188 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4189 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4191 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4192 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4195 /* State known to have been set by the currently-compiling display
4196 * list. Used to eliminate some redundant state changes.
4204 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4205 * to small enums suitable for use as an array index.
4208 enum mesa_debug_source
{
4209 MESA_DEBUG_SOURCE_API
,
4210 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4211 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4212 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4213 MESA_DEBUG_SOURCE_APPLICATION
,
4214 MESA_DEBUG_SOURCE_OTHER
,
4215 MESA_DEBUG_SOURCE_COUNT
4218 enum mesa_debug_type
{
4219 MESA_DEBUG_TYPE_ERROR
,
4220 MESA_DEBUG_TYPE_DEPRECATED
,
4221 MESA_DEBUG_TYPE_UNDEFINED
,
4222 MESA_DEBUG_TYPE_PORTABILITY
,
4223 MESA_DEBUG_TYPE_PERFORMANCE
,
4224 MESA_DEBUG_TYPE_OTHER
,
4225 MESA_DEBUG_TYPE_MARKER
,
4226 MESA_DEBUG_TYPE_PUSH_GROUP
,
4227 MESA_DEBUG_TYPE_POP_GROUP
,
4228 MESA_DEBUG_TYPE_COUNT
4231 enum mesa_debug_severity
{
4232 MESA_DEBUG_SEVERITY_LOW
,
4233 MESA_DEBUG_SEVERITY_MEDIUM
,
4234 MESA_DEBUG_SEVERITY_HIGH
,
4235 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4236 MESA_DEBUG_SEVERITY_COUNT
4242 * Driver-specific state flags.
4244 * These are or'd with gl_context::NewDriverState to notify a driver about
4245 * a state change. The driver sets the flags at context creation and
4246 * the meaning of the bits set is opaque to core Mesa.
4248 struct gl_driver_flags
4250 /** gl_context::Array::_DrawArrays (vertex array state) */
4253 /** gl_context::TransformFeedback::CurrentObject */
4254 uint64_t NewTransformFeedback
;
4256 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4257 uint64_t NewTransformFeedbackProg
;
4259 /** gl_context::RasterDiscard */
4260 uint64_t NewRasterizerDiscard
;
4263 * gl_context::UniformBufferBindings
4264 * gl_shader_program::UniformBlocks
4266 uint64_t NewUniformBuffer
;
4269 * gl_context::ShaderStorageBufferBindings
4270 * gl_shader_program::ShaderStorageBlocks
4272 uint64_t NewShaderStorageBuffer
;
4274 uint64_t NewTextureBuffer
;
4277 * gl_context::AtomicBufferBindings
4279 uint64_t NewAtomicBuffer
;
4282 * gl_context::ImageUnits
4284 uint64_t NewImageUnits
;
4287 * gl_context::TessCtrlProgram::patch_default_*
4289 uint64_t NewDefaultTessLevels
;
4292 struct gl_uniform_buffer_binding
4294 struct gl_buffer_object
*BufferObject
;
4295 /** Start of uniform block data in the buffer */
4297 /** Size of data allowed to be referenced from the buffer (in bytes) */
4300 * glBindBufferBase() indicates that the Size should be ignored and only
4301 * limited by the current size of the BufferObject.
4303 GLboolean AutomaticSize
;
4306 struct gl_shader_storage_buffer_binding
4308 struct gl_buffer_object
*BufferObject
;
4309 /** Start of shader storage block data in the buffer */
4311 /** Size of data allowed to be referenced from the buffer (in bytes) */
4314 * glBindBufferBase() indicates that the Size should be ignored and only
4315 * limited by the current size of the BufferObject.
4317 GLboolean AutomaticSize
;
4321 * ARB_shader_image_load_store image unit.
4323 struct gl_image_unit
4326 * Texture object bound to this unit.
4328 struct gl_texture_object
*TexObj
;
4331 * Level of the texture object bound to this unit.
4336 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4337 * GL_FALSE if only some specific layer of the texture is bound.
4343 * Layer of the texture object bound to this unit as specified by the
4349 * Layer of the texture object bound to this unit, or zero if the
4350 * whole level is bound.
4355 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4356 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4361 * GL internal format that determines the interpretation of the
4362 * image memory when shader image operations are performed through
4368 * Mesa format corresponding to \c Format.
4370 mesa_format _ActualFormat
;
4375 * Binding point for an atomic counter buffer object.
4377 struct gl_atomic_buffer_binding
4379 struct gl_buffer_object
*BufferObject
;
4385 * Shader subroutines storage
4387 struct gl_subroutine_index_binding
4394 * Mesa rendering context.
4396 * This is the central context data structure for Mesa. Almost all
4397 * OpenGL state is contained in this structure.
4398 * Think of this as a base class from which device drivers will derive
4403 /** State possibly shared with other contexts in the address space */
4404 struct gl_shared_state
*Shared
;
4406 /** \name API function pointer tables */
4410 * The current dispatch table for non-displaylist-saving execution, either
4411 * BeginEnd or OutsideBeginEnd
4413 struct _glapi_table
*Exec
;
4415 * The normal dispatch table for non-displaylist-saving, non-begin/end
4417 struct _glapi_table
*OutsideBeginEnd
;
4418 /** The dispatch table used between glNewList() and glEndList() */
4419 struct _glapi_table
*Save
;
4421 * The dispatch table used between glBegin() and glEnd() (outside of a
4422 * display list). Only valid functions between those two are set, which is
4423 * mostly just the set in a GLvertexformat struct.
4425 struct _glapi_table
*BeginEnd
;
4427 * Dispatch table for when a graphics reset has happened.
4429 struct _glapi_table
*ContextLost
;
4431 * Tracks the current dispatch table out of the 4 above, so that it can be
4432 * re-set on glXMakeCurrent().
4434 struct _glapi_table
*CurrentDispatch
;
4437 struct gl_config Visual
;
4438 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4439 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4440 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4441 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4444 * Device driver function pointer table
4446 struct dd_function_table Driver
;
4448 /** Core/Driver constants */
4449 struct gl_constants Const
;
4451 /** \name The various 4x4 matrix stacks */
4453 struct gl_matrix_stack ModelviewMatrixStack
;
4454 struct gl_matrix_stack ProjectionMatrixStack
;
4455 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4456 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4457 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4460 /** Combined modelview and projection matrix */
4461 GLmatrix _ModelProjectMatrix
;
4463 /** \name Display lists */
4464 struct gl_dlist_state ListState
;
4466 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4467 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4469 /** Extension information */
4470 struct gl_extensions Extensions
;
4472 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4474 char *VersionString
;
4476 /** \name State attribute stack (for glPush/PopAttrib) */
4478 GLuint AttribStackDepth
;
4479 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4482 /** \name Renderer attribute groups
4484 * We define a struct for each attribute group to make pushing and popping
4485 * attributes easy. Also it's a good organization.
4488 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4489 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4490 struct gl_current_attrib Current
; /**< Current attributes */
4491 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4492 struct gl_eval_attrib Eval
; /**< Eval attributes */
4493 struct gl_fog_attrib Fog
; /**< Fog attributes */
4494 struct gl_hint_attrib Hint
; /**< Hint attributes */
4495 struct gl_light_attrib Light
; /**< Light attributes */
4496 struct gl_line_attrib Line
; /**< Line attributes */
4497 struct gl_list_attrib List
; /**< List attributes */
4498 struct gl_multisample_attrib Multisample
;
4499 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4500 struct gl_point_attrib Point
; /**< Point attributes */
4501 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4502 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4503 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4504 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4505 struct gl_texture_attrib Texture
; /**< Texture attributes */
4506 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4507 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4510 /** \name Client attribute stack */
4512 GLuint ClientAttribStackDepth
;
4513 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4516 /** \name Client attribute groups */
4518 struct gl_array_attrib Array
; /**< Vertex arrays */
4519 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4520 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4521 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4524 /** \name Other assorted state (not pushed/popped on attribute stack) */
4526 struct gl_pixelmaps PixelMaps
;
4528 struct gl_evaluators EvalMap
; /**< All evaluators */
4529 struct gl_feedback Feedback
; /**< Feedback */
4530 struct gl_selection Select
; /**< Selection */
4532 struct gl_program_state Program
; /**< general program state */
4533 struct gl_vertex_program_state VertexProgram
;
4534 struct gl_fragment_program_state FragmentProgram
;
4535 struct gl_geometry_program_state GeometryProgram
;
4536 struct gl_compute_program_state ComputeProgram
;
4537 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4538 struct gl_tess_eval_program_state TessEvalProgram
;
4539 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4541 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4542 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4545 * Current active shader pipeline state
4547 * Almost all internal users want ::_Shader instead of ::Shader. The
4548 * exceptions are bits of legacy GLSL API that do not know about separate
4551 * If a program is active via \c glUseProgram, this will point to
4554 * If a program pipeline is active via \c glBindProgramPipeline, this will
4555 * point to \c ::Pipeline.Current.
4557 * If neither a program nor a program pipeline is active, this will point to
4558 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4561 struct gl_pipeline_object
*_Shader
;
4563 struct gl_query_state Query
; /**< occlusion, timer queries */
4565 struct gl_transform_feedback_state TransformFeedback
;
4567 struct gl_perf_monitor_state PerfMonitor
;
4569 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4570 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4571 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4573 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4574 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4576 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4579 * Current GL_ARB_uniform_buffer_object binding referenced by
4580 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4582 struct gl_buffer_object
*UniformBuffer
;
4585 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4586 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4588 struct gl_buffer_object
*ShaderStorageBuffer
;
4591 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4592 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4593 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4596 struct gl_uniform_buffer_binding
4597 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4600 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4601 * and GL 4.3. This is set up using glBindBufferRange() or
4602 * glBindBufferBase(). They are associated with shader storage blocks by
4603 * glShaderStorageBlockBinding()'s state in the shader program.
4605 struct gl_shader_storage_buffer_binding
4606 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4609 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4612 struct gl_buffer_object
*AtomicBuffer
;
4615 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4618 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4621 * Array of atomic counter buffer binding points.
4623 struct gl_atomic_buffer_binding
4624 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4627 * Array of image units for ARB_shader_image_load_store.
4629 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4631 struct gl_subroutine_index_binding SubroutineIndex
[MESA_SHADER_STAGES
];
4634 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4636 /* GL_EXT_framebuffer_object */
4637 struct gl_renderbuffer
*CurrentRenderbuffer
;
4639 GLenum ErrorValue
; /**< Last error code */
4642 * Recognize and silence repeated error debug messages in buggy apps.
4644 const char *ErrorDebugFmtString
;
4645 GLuint ErrorDebugCount
;
4647 /* GL_ARB_debug_output/GL_KHR_debug */
4649 struct gl_debug_state
*Debug
;
4651 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4652 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4653 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4655 struct gl_driver_flags DriverFlags
;
4657 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4659 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4661 /** \name Derived state */
4662 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4663 GLfloat _EyeZDir
[3];
4664 GLfloat _ModelViewInvScale
;
4665 GLboolean _NeedEyeCoords
;
4666 GLboolean _ForceEyeCoords
;
4668 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4670 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4672 /** \name For debugging/development only */
4674 GLboolean FirstTimeCurrent
;
4678 * False if this context was created without a config. This is needed
4679 * because the initial state of glDrawBuffers depends on this
4681 GLboolean HasConfig
;
4683 /** software compression/decompression supported or not */
4684 GLboolean Mesa_DXTn
;
4686 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4688 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4691 * \name Hooks for module contexts.
4693 * These will eventually live in the driver or elsewhere.
4696 void *swrast_context
;
4697 void *swsetup_context
;
4698 void *swtnl_context
;
4699 struct vbo_context
*vbo_context
;
4700 struct st_context
*st
;
4705 * \name NV_vdpau_interop
4708 const void *vdpDevice
;
4709 const void *vdpGetProcAddress
;
4710 struct set
*vdpSurfaces
;
4714 * Has this context observed a GPU reset in any context in the share group?
4716 * Once this field becomes true, it is never reset to false.
4718 GLboolean ShareGroupReset
;
4721 * \name OES_primitive_bounding_box
4723 * Stores the arguments to glPrimitiveBoundingBox
4725 GLfloat PrimitiveBoundingBox
[8];
4729 * Information about memory usage. All sizes are in kilobytes.
4731 struct gl_memory_info
4733 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4734 unsigned avail_device_memory
; /**< free device memory at the moment */
4735 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4736 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4737 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4738 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4742 extern int MESA_VERBOSE
;
4743 extern int MESA_DEBUG_FLAGS
;
4744 # define MESA_FUNCTION __func__
4746 # define MESA_VERBOSE 0
4747 # define MESA_DEBUG_FLAGS 0
4748 # define MESA_FUNCTION "a function"
4752 /** The MESA_VERBOSE var is a bitmask of these flags */
4755 VERBOSE_VARRAY
= 0x0001,
4756 VERBOSE_TEXTURE
= 0x0002,
4757 VERBOSE_MATERIAL
= 0x0004,
4758 VERBOSE_PIPELINE
= 0x0008,
4759 VERBOSE_DRIVER
= 0x0010,
4760 VERBOSE_STATE
= 0x0020,
4761 VERBOSE_API
= 0x0040,
4762 VERBOSE_DISPLAY_LIST
= 0x0100,
4763 VERBOSE_LIGHTING
= 0x0200,
4764 VERBOSE_PRIMS
= 0x0400,
4765 VERBOSE_VERTS
= 0x0800,
4766 VERBOSE_DISASSEM
= 0x1000,
4767 VERBOSE_DRAW
= 0x2000,
4768 VERBOSE_SWAPBUFFERS
= 0x4000
4772 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4775 DEBUG_SILENT
= (1 << 0),
4776 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4777 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4778 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4785 #endif /* MTYPES_H */