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
;
2085 * State common to vertex and fragment programs.
2087 struct gl_program_state
2089 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2090 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2095 * Context state for vertex programs.
2097 struct gl_vertex_program_state
2099 GLboolean Enabled
; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2100 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2101 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2102 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2103 /** Computed two sided lighting for fixed function/programs. */
2104 GLboolean _TwoSideEnabled
;
2105 struct gl_vertex_program
*Current
; /**< User-bound vertex program */
2107 /** Currently enabled and valid vertex program (including internal
2108 * programs, user-defined vertex programs and GLSL vertex shaders).
2109 * This is the program we must use when rendering.
2111 struct gl_vertex_program
*_Current
;
2113 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2115 /** Should fixed-function T&L be implemented with a vertex prog? */
2116 GLboolean _MaintainTnlProgram
;
2118 /** Program to emulate fixed-function T&L (see above) */
2119 struct gl_vertex_program
*_TnlProgram
;
2121 /** Cache of fixed-function programs */
2122 struct gl_program_cache
*Cache
;
2124 GLboolean _Overriden
;
2128 * Context state for tessellation control programs.
2130 struct gl_tess_ctrl_program_state
2132 /** Currently bound and valid shader. */
2133 struct gl_tess_ctrl_program
*_Current
;
2135 GLint patch_vertices
;
2136 GLfloat patch_default_outer_level
[4];
2137 GLfloat patch_default_inner_level
[2];
2141 * Context state for tessellation evaluation programs.
2143 struct gl_tess_eval_program_state
2145 /** Currently bound and valid shader. */
2146 struct gl_tess_eval_program
*_Current
;
2150 * Context state for geometry programs.
2152 struct gl_geometry_program_state
2154 /** Currently enabled and valid program (including internal programs
2155 * and compiled shader programs).
2157 struct gl_geometry_program
*_Current
;
2161 * Context state for fragment programs.
2163 struct gl_fragment_program_state
2165 GLboolean Enabled
; /**< User-set fragment program enable flag */
2166 GLboolean _Enabled
; /**< Enabled and _valid_ user program? */
2167 struct gl_fragment_program
*Current
; /**< User-bound fragment program */
2169 /** Currently enabled and valid fragment program (including internal
2170 * programs, user-defined fragment programs and GLSL fragment shaders).
2171 * This is the program we must use when rendering.
2173 struct gl_fragment_program
*_Current
;
2175 GLfloat Parameters
[MAX_PROGRAM_ENV_PARAMS
][4]; /**< Env params */
2177 /** Should fixed-function texturing be implemented with a fragment prog? */
2178 GLboolean _MaintainTexEnvProgram
;
2180 /** Program to emulate fixed-function texture env/combine (see above) */
2181 struct gl_fragment_program
*_TexEnvProgram
;
2183 /** Cache of fixed-function programs */
2184 struct gl_program_cache
*Cache
;
2189 * Context state for compute programs.
2191 struct gl_compute_program_state
2193 /** Currently enabled and valid program (including internal programs
2194 * and compiled shader programs).
2196 struct gl_compute_program
*_Current
;
2201 * ATI_fragment_shader runtime state
2204 struct atifs_instruction
;
2205 struct atifs_setupinst
;
2208 * ATI fragment shader
2210 struct ati_fragment_shader
2214 struct atifs_instruction
*Instructions
[2];
2215 struct atifs_setupinst
*SetupInst
[2];
2216 GLfloat Constants
[8][4];
2217 GLbitfield LocalConstDef
; /**< Indicates which constants have been set */
2218 GLubyte numArithInstr
[2];
2219 GLubyte regsAssigned
[2];
2220 GLubyte NumPasses
; /**< 1 or 2 */
2222 GLubyte last_optype
;
2223 GLboolean interpinp1
;
2226 struct gl_program
*Program
;
2230 * Context state for GL_ATI_fragment_shader
2232 struct gl_ati_fragment_shader_state
2235 GLboolean _Enabled
; /**< enabled and valid shader? */
2236 GLboolean Compiling
;
2237 GLfloat GlobalConstants
[8][4];
2238 struct ati_fragment_shader
*Current
;
2242 * Shader subroutine function definition
2244 struct gl_subroutine_function
2248 int num_compat_types
;
2249 const struct glsl_type
**types
;
2253 * Shader information needed by both gl_shader and gl_linked shader.
2255 struct gl_shader_info
2257 bool uses_builtin_functions
;
2258 bool uses_gl_fragcoord
;
2259 bool redeclares_gl_fragcoord
;
2260 bool ARB_fragment_coord_conventions_enable
;
2263 * Fragment shader state from GLSL 1.50 layout qualifiers.
2265 bool origin_upper_left
;
2266 bool pixel_center_integer
;
2269 /** Global xfb_stride out qualifier if any */
2270 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2271 } TransformFeedback
;
2274 * Tessellation Control shader state from layout qualifiers.
2278 * 0 - vertices not declared in shader, or
2279 * 1 .. GL_MAX_PATCH_VERTICES
2285 * Tessellation Evaluation shader state from layout qualifiers.
2289 * GL_TRIANGLES, GL_QUADS, GL_ISOLINES or PRIM_UNKNOWN if it's not set
2292 GLenum PrimitiveMode
;
2294 * GL_EQUAL, GL_FRACTIONAL_ODD, GL_FRACTIONAL_EVEN, or 0 if it's not set
2299 * GL_CW, GL_CCW, or 0 if it's not set in this shader.
2303 * 1, 0, or -1 if it's not set in this shader.
2309 * Geometry shader state from GLSL 1.50 layout qualifiers.
2314 * 0 - Invocations count not declared in shader, or
2315 * 1 .. MAX_GEOMETRY_SHADER_INVOCATIONS
2319 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2320 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2325 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2326 * it's not set in this shader.
2332 * Whether early fragment tests are enabled as defined by
2333 * ARB_shader_image_load_store.
2335 bool EarlyFragmentTests
;
2338 * A bitmask of gl_advanced_blend_mode values
2340 GLbitfield BlendSupport
;
2343 * Compute shader state from ARB_compute_shader and
2344 * ARB_compute_variable_group_size layout qualifiers.
2348 * Size specified using local_size_{x,y,z}, or all 0's to indicate that
2349 * it's not set in this shader.
2351 unsigned LocalSize
[3];
2354 * Whether a variable work group size has been specified as defined by
2355 * ARB_compute_variable_group_size.
2357 bool LocalSizeVariable
;
2362 * A linked GLSL shader object.
2364 struct gl_linked_shader
2366 gl_shader_stage Stage
;
2368 struct gl_program
*Program
; /**< Post-compile assembly code */
2371 * \name Sampler tracking
2373 * \note Each of these fields is only set post-linking.
2376 unsigned num_samplers
; /**< Number of samplers used by this shader. */
2377 GLbitfield active_samplers
; /**< Bitfield of which samplers are used */
2378 GLbitfield shadow_samplers
; /**< Samplers used for shadow sampling. */
2382 * Map from sampler unit to texture unit (set by glUniform1i())
2384 * A sampler unit is associated with each sampler uniform by the linker.
2385 * The sampler unit associated with each uniform is stored in the
2386 * \c gl_uniform_storage::sampler field.
2388 GLubyte SamplerUnits
[MAX_SAMPLERS
];
2389 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2390 gl_texture_index SamplerTargets
[MAX_SAMPLERS
];
2393 * Number of default uniform block components used by this shader.
2395 * This field is only set post-linking.
2397 unsigned num_uniform_components
;
2400 * Number of combined uniform components used by this shader.
2402 * This field is only set post-linking. It is the sum of the uniform block
2403 * sizes divided by sizeof(float), and num_uniform_compoennts.
2405 unsigned num_combined_uniform_components
;
2407 unsigned NumUniformBlocks
;
2408 struct gl_uniform_block
**UniformBlocks
;
2410 unsigned NumShaderStorageBlocks
;
2411 struct gl_uniform_block
**ShaderStorageBlocks
;
2413 struct exec_list
*ir
;
2414 struct exec_list
*packed_varyings
;
2415 struct exec_list
*fragdata_arrays
;
2416 struct glsl_symbol_table
*symbols
;
2419 * Map from image uniform index to image unit (set by glUniform1i())
2421 * An image uniform index is associated with each image uniform by
2422 * the linker. The image index associated with each uniform is
2423 * stored in the \c gl_uniform_storage::image field.
2425 GLubyte ImageUnits
[MAX_IMAGE_UNIFORMS
];
2428 * Access qualifier specified in the shader for each image uniform
2429 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2432 * It may be different, though only more strict than the value of
2433 * \c gl_image_unit::Access for the corresponding image unit.
2435 GLenum ImageAccess
[MAX_IMAGE_UNIFORMS
];
2438 * Number of image uniforms defined in the shader. It specifies
2439 * the number of valid elements in the \c ImageUnits and \c
2440 * ImageAccess arrays above.
2444 struct gl_active_atomic_buffer
**AtomicBuffers
;
2445 unsigned NumAtomicBuffers
;
2448 * Number of types for subroutine uniforms.
2450 GLuint NumSubroutineUniformTypes
;
2453 * Subroutine uniform remap table
2454 * based on the program level uniform remap table.
2456 GLuint NumSubroutineUniforms
; /* non-sparse total */
2457 GLuint NumSubroutineUniformRemapTable
;
2458 struct gl_uniform_storage
**SubroutineUniformRemapTable
;
2461 * Num of subroutine functions for this stage
2462 * and storage for them.
2464 GLuint NumSubroutineFunctions
;
2465 GLuint MaxSubroutineFunctionIndex
;
2466 struct gl_subroutine_function
*SubroutineFunctions
;
2468 struct gl_shader_info info
;
2471 static inline GLbitfield
gl_external_samplers(struct gl_linked_shader
*shader
)
2473 GLbitfield external_samplers
= 0;
2474 GLbitfield mask
= shader
->active_samplers
;
2477 int idx
= u_bit_scan(&mask
);
2478 if (shader
->SamplerTargets
[idx
] == TEXTURE_EXTERNAL_INDEX
)
2479 external_samplers
|= (1 << idx
);
2482 return external_samplers
;
2486 * A GLSL shader object.
2490 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB ||
2491 * GL_TESS_CONTROL_SHADER || GL_TESS_EVALUATION_SHADER.
2492 * Must be the first field.
2495 gl_shader_stage Stage
;
2496 GLuint Name
; /**< AKA the handle */
2497 GLint RefCount
; /**< Reference count */
2498 GLchar
*Label
; /**< GL_KHR_debug */
2499 GLboolean DeletePending
;
2500 GLboolean CompileStatus
;
2501 bool IsES
; /**< True if this shader uses GLSL ES */
2503 GLuint SourceChecksum
; /**< for debug/logging purposes */
2504 const GLchar
*Source
; /**< Source code string */
2508 unsigned Version
; /**< GLSL version used for linking */
2510 struct exec_list
*ir
;
2511 struct glsl_symbol_table
*symbols
;
2513 struct gl_shader_info info
;
2517 struct gl_uniform_buffer_variable
2522 * Name of the uniform as seen by glGetUniformIndices.
2524 * glGetUniformIndices requires that the block instance index \b not be
2525 * present in the name of queried uniforms.
2528 * \c gl_uniform_buffer_variable::IndexName and
2529 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2533 const struct glsl_type
*Type
;
2534 unsigned int Offset
;
2539 enum gl_uniform_block_packing
2548 struct gl_uniform_block
2550 /** Declared name of the uniform block */
2553 /** Array of supplemental information about UBO ir_variables. */
2554 struct gl_uniform_buffer_variable
*Uniforms
;
2558 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2559 * with glBindBufferBase to bind a buffer object to this uniform block. When
2560 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2565 * Minimum size (in bytes) of a buffer object to back this uniform buffer
2566 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2568 GLuint UniformBufferSize
;
2570 /** Stages that reference this block */
2574 * Layout specified in the shader
2576 * This isn't accessible through the API, but it is used while
2577 * cross-validating uniform blocks.
2579 enum gl_uniform_block_packing _Packing
;
2583 * Structure that represents a reference to an atomic buffer from some
2586 struct gl_active_atomic_buffer
2588 /** Uniform indices of the atomic counters declared within it. */
2592 /** Binding point index associated with it. */
2595 /** Minimum reasonable size it is expected to have. */
2598 /** Shader stages making use of it. */
2599 GLboolean StageReferences
[MESA_SHADER_STAGES
];
2603 * Data container for shader queries. This holds only the minimal
2604 * amount of required information for resource queries to work.
2606 struct gl_shader_variable
2609 * Declared type of the variable
2611 const struct glsl_type
*type
;
2614 * If the variable is in an interface block, this is the type of the block.
2616 const struct glsl_type
*interface_type
;
2619 * For variables inside structs (possibly recursively), this is the
2620 * outermost struct type.
2622 const struct glsl_type
*outermost_struct_type
;
2625 * Declared name of the variable
2630 * Storage location of the base of this variable
2632 * The precise meaning of this field depends on the nature of the variable.
2634 * - Vertex shader input: one of the values from \c gl_vert_attrib.
2635 * - Vertex shader output: one of the values from \c gl_varying_slot.
2636 * - Geometry shader input: one of the values from \c gl_varying_slot.
2637 * - Geometry shader output: one of the values from \c gl_varying_slot.
2638 * - Fragment shader input: one of the values from \c gl_varying_slot.
2639 * - Fragment shader output: one of the values from \c gl_frag_result.
2640 * - Uniforms: Per-stage uniform slot number for default uniform block.
2641 * - Uniforms: Index within the uniform block definition for UBO members.
2642 * - Non-UBO Uniforms: explicit location until linking then reused to
2643 * store uniform slot number.
2644 * - Other: This field is not currently used.
2646 * If the variable is a uniform, shader input, or shader output, and the
2647 * slot has not been assigned, the value will be -1.
2652 * Specifies the first component the variable is stored in as per
2653 * ARB_enhanced_layouts.
2655 unsigned component
:2;
2658 * Output index for dual source blending.
2661 * The GLSL spec only allows the values 0 or 1 for the index in \b dual
2667 * Specifies whether a shader input/output is per-patch in tessellation
2673 * Storage class of the variable.
2675 * \sa (n)ir_variable_mode
2680 * Interpolation mode for shader inputs / outputs
2682 * \sa glsl_interp_mode
2684 unsigned interpolation
:2;
2687 * Was the location explicitly set in the shader?
2689 * If the location is explicitly set in the shader, it \b cannot be changed
2690 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
2693 unsigned explicit_location
:1;
2696 * Precision qualifier.
2698 unsigned precision
:2;
2702 * Active resource in a gl_shader_program
2704 struct gl_program_resource
2706 GLenum Type
; /** Program interface type. */
2707 const void *Data
; /** Pointer to resource associated data structure. */
2708 uint8_t StageReferences
; /** Bitmask of shader stage references. */
2712 * A GLSL program object.
2713 * Basically a linked collection of vertex and fragment shaders.
2715 struct gl_shader_program
2717 GLenum Type
; /**< Always GL_SHADER_PROGRAM (internal token) */
2718 GLuint Name
; /**< aka handle or ID */
2719 GLchar
*Label
; /**< GL_KHR_debug */
2720 GLint RefCount
; /**< Reference count */
2721 GLboolean DeletePending
;
2724 * Is the application intending to glGetProgramBinary this program?
2726 GLboolean BinaryRetreivableHint
;
2729 * Indicates whether program can be bound for individual pipeline stages
2730 * using UseProgramStages after it is next linked.
2732 GLboolean SeparateShader
;
2734 GLuint NumShaders
; /**< number of attached shaders */
2735 struct gl_shader
**Shaders
; /**< List of attached the shaders */
2738 * User-defined attribute bindings
2740 * These are set via \c glBindAttribLocation and are used to direct the
2741 * GLSL linker. These are \b not the values used in the compiled shader,
2742 * and they are \b not the values returned by \c glGetAttribLocation.
2744 struct string_to_uint_map
*AttributeBindings
;
2747 * User-defined fragment data bindings
2749 * These are set via \c glBindFragDataLocation and are used to direct the
2750 * GLSL linker. These are \b not the values used in the compiled shader,
2751 * and they are \b not the values returned by \c glGetFragDataLocation.
2753 struct string_to_uint_map
*FragDataBindings
;
2754 struct string_to_uint_map
*FragDataIndexBindings
;
2757 * Transform feedback varyings last specified by
2758 * glTransformFeedbackVaryings().
2760 * For the current set of transform feedback varyings used for transform
2761 * feedback output, see LinkedTransformFeedback.
2765 /** Global xfb_stride out qualifier if any */
2766 GLuint BufferStride
[MAX_FEEDBACK_BUFFERS
];
2768 GLchar
**VaryingNames
; /**< Array [NumVarying] of char * */
2769 } TransformFeedback
;
2771 /** Post-link transform feedback info. */
2772 struct gl_transform_feedback_info LinkedTransformFeedback
;
2774 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2775 enum gl_frag_depth_layout FragDepthLayout
;
2778 * Tessellation Evaluation shader state from layout qualifiers.
2782 * True if gl_ClipDistance is written to. Copied into
2783 * gl_tess_eval_program by _mesa_copy_linked_program_data().
2785 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2786 0 if not present. */
2787 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2788 0 if not present. */
2792 * Geometry shader state - copied into gl_geometry_program by
2793 * _mesa_copy_linked_program_data().
2799 * True if gl_ClipDistance is written to. Copied into
2800 * gl_geometry_program by _mesa_copy_linked_program_data().
2802 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2803 0 if not present. */
2804 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2805 0 if not present. */
2806 bool UsesEndPrimitive
;
2810 /** Vertex shader state */
2813 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2814 * by _mesa_copy_linked_program_data().
2816 GLuint ClipDistanceArraySize
; /**< Size of the gl_ClipDistance array, or
2817 0 if not present. */
2818 GLuint CullDistanceArraySize
; /**< Size of the gl_CullDistance array, or
2819 0 if not present. */
2823 * Compute shader state - copied into gl_compute_program by
2824 * _mesa_copy_linked_program_data().
2828 * If this shader contains a compute stage, size specified using
2829 * local_size_{x,y,z}. Otherwise undefined.
2831 unsigned LocalSize
[3];
2833 * Size of shared variables accessed by the compute shader.
2835 unsigned SharedSize
;
2838 * Whether a variable work group size has been specified.
2840 bool LocalSizeVariable
;
2843 /* post-link info: */
2844 unsigned NumUniformStorage
;
2845 unsigned NumHiddenUniforms
;
2846 struct gl_uniform_storage
*UniformStorage
;
2849 * Mapping from GL uniform locations returned by \c glUniformLocation to
2850 * UniformStorage entries. Arrays will have multiple contiguous slots
2851 * in the UniformRemapTable, all pointing to the same UniformStorage entry.
2853 unsigned NumUniformRemapTable
;
2854 struct gl_uniform_storage
**UniformRemapTable
;
2857 * Sometimes there are empty slots left over in UniformRemapTable after we
2858 * allocate slots to explicit locations. This list stores the blocks of
2859 * continuous empty slots inside UniformRemapTable.
2861 struct exec_list EmptyUniformLocations
;
2864 * Size of the gl_ClipDistance array that is output from the last pipeline
2865 * stage before the fragment shader.
2867 unsigned LastClipDistanceArraySize
;
2868 unsigned LastCullDistanceArraySize
;
2870 unsigned NumUniformBlocks
;
2871 struct gl_uniform_block
*UniformBlocks
;
2873 unsigned NumShaderStorageBlocks
;
2874 struct gl_uniform_block
*ShaderStorageBlocks
;
2877 * Map of active uniform names to locations
2879 * Maps any active uniform that is not an array element to a location.
2880 * Each active uniform, including individual structure members will appear
2881 * in this map. This roughly corresponds to the set of names that would be
2882 * enumerated by \c glGetActiveUniform.
2884 struct string_to_uint_map
*UniformHash
;
2886 struct gl_active_atomic_buffer
*AtomicBuffers
;
2887 unsigned NumAtomicBuffers
;
2889 GLboolean LinkStatus
; /**< GL_LINK_STATUS */
2890 GLboolean Validated
;
2891 GLboolean _Used
; /**< Ever used for drawing? */
2892 GLboolean SamplersValidated
; /**< Samplers validated against texture units? */
2895 unsigned Version
; /**< GLSL version used for linking */
2896 bool IsES
; /**< True if this program uses GLSL ES */
2899 * Per-stage shaders resulting from the first stage of linking.
2901 * Set of linked shaders for this program. The array is accessed using the
2902 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2905 struct gl_linked_shader
*_LinkedShaders
[MESA_SHADER_STAGES
];
2907 /** List of all active resources after linking. */
2908 struct gl_program_resource
*ProgramResourceList
;
2909 unsigned NumProgramResourceList
;
2911 /* True if any of the fragment shaders attached to this program use:
2912 * #extension ARB_fragment_coord_conventions: enable
2914 GLboolean ARB_fragment_coord_conventions_enable
;
2918 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2919 #define GLSL_LOG 0x2 /**< Write shaders to files */
2920 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2921 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2922 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2923 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2924 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2925 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2926 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2927 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2931 * Context state for GLSL vertex/fragment shaders.
2932 * Extended to support pipeline object
2934 struct gl_pipeline_object
2936 /** Name of the pipeline object as received from glGenProgramPipelines.
2937 * It would be 0 for shaders without separate shader objects.
2945 GLchar
*Label
; /**< GL_KHR_debug */
2948 * Programs used for rendering
2950 * There is a separate program set for each shader stage.
2952 struct gl_shader_program
*CurrentProgram
[MESA_SHADER_STAGES
];
2954 struct gl_shader_program
*_CurrentFragmentProgram
;
2957 * Program used by glUniform calls.
2959 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2961 struct gl_shader_program
*ActiveProgram
;
2963 GLbitfield Flags
; /**< Mask of GLSL_x flags */
2965 GLboolean EverBound
; /**< Has the pipeline object been created */
2967 GLboolean Validated
; /**< Pipeline Validation status */
2973 * Context state for GLSL pipeline shaders.
2975 struct gl_pipeline_shader_state
2977 /** Currently bound pipeline object. See _mesa_BindProgramPipeline() */
2978 struct gl_pipeline_object
*Current
;
2980 /* Default Object to ensure that _Shader is never NULL */
2981 struct gl_pipeline_object
*Default
;
2983 /** Pipeline objects */
2984 struct _mesa_HashTable
*Objects
;
2988 * Compiler options for a single GLSL shaders type
2990 struct gl_shader_compiler_options
2992 /** Driver-selectable options: */
2993 GLboolean EmitNoLoops
;
2994 GLboolean EmitNoFunctions
;
2995 GLboolean EmitNoCont
; /**< Emit CONT opcode? */
2996 GLboolean EmitNoMainReturn
; /**< Emit CONT/RET opcodes? */
2997 GLboolean EmitNoPow
; /**< Emit POW opcodes? */
2998 GLboolean EmitNoSat
; /**< Emit SAT opcodes? */
2999 GLboolean LowerCombinedClipCullDistance
; /** Lower gl_ClipDistance and
3000 * gl_CullDistance together from
3001 * float[8] to vec4[2]
3005 * \name Forms of indirect addressing the driver cannot do.
3008 GLboolean EmitNoIndirectInput
; /**< No indirect addressing of inputs */
3009 GLboolean EmitNoIndirectOutput
; /**< No indirect addressing of outputs */
3010 GLboolean EmitNoIndirectTemp
; /**< No indirect addressing of temps */
3011 GLboolean EmitNoIndirectUniform
; /**< No indirect addressing of constants */
3012 GLboolean EmitNoIndirectSampler
; /**< No indirect addressing of samplers */
3015 GLuint MaxIfDepth
; /**< Maximum nested IF blocks */
3016 GLuint MaxUnrollIterations
;
3019 * Optimize code for array of structures backends.
3021 * This is a proxy for:
3022 * - preferring DP4 instructions (rather than MUL/MAD) for
3023 * matrix * vector operations, such as position transformation.
3025 GLboolean OptimizeForAOS
;
3027 GLboolean LowerBufferInterfaceBlocks
; /**< Lower UBO and SSBO access to intrinsics. */
3029 /** Clamp UBO and SSBO block indices so they don't go out-of-bounds. */
3030 GLboolean ClampBlockIndicesToArrayBounds
;
3032 GLboolean LowerShaderSharedVariables
; /**< Lower compute shader shared
3033 * variable access to intrinsics. */
3035 const struct nir_shader_compiler_options
*NirOptions
;
3040 * Occlusion/timer query object.
3042 struct gl_query_object
3044 GLenum Target
; /**< The query target, when active */
3045 GLuint Id
; /**< hash table ID/name */
3046 GLchar
*Label
; /**< GL_KHR_debug */
3047 GLuint64EXT Result
; /**< the counter */
3048 GLboolean Active
; /**< inside Begin/EndQuery */
3049 GLboolean Ready
; /**< result is ready? */
3050 GLboolean EverBound
;/**< has query object ever been bound */
3051 GLuint Stream
; /**< The stream */
3056 * Context state for query objects.
3058 struct gl_query_state
3060 struct _mesa_HashTable
*QueryObjects
;
3061 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
3062 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
3064 /** GL_NV_conditional_render */
3065 struct gl_query_object
*CondRenderQuery
;
3067 /** GL_EXT_transform_feedback */
3068 struct gl_query_object
*PrimitivesGenerated
[MAX_VERTEX_STREAMS
];
3069 struct gl_query_object
*PrimitivesWritten
[MAX_VERTEX_STREAMS
];
3071 /** GL_ARB_timer_query */
3072 struct gl_query_object
*TimeElapsed
;
3074 /** GL_ARB_pipeline_statistics_query */
3075 struct gl_query_object
*pipeline_stats
[MAX_PIPELINE_STATISTICS
];
3077 GLenum CondRenderMode
;
3081 /** Sync object state */
3082 struct gl_sync_object
3084 GLenum Type
; /**< GL_SYNC_FENCE */
3085 GLuint Name
; /**< Fence name */
3086 GLchar
*Label
; /**< GL_KHR_debug */
3087 GLint RefCount
; /**< Reference count */
3088 GLboolean DeletePending
; /**< Object was deleted while there were still
3089 * live references (e.g., sync not yet finished)
3091 GLenum SyncCondition
;
3092 GLbitfield Flags
; /**< Flags passed to glFenceSync */
3093 GLuint StatusFlag
:1; /**< Has the sync object been signaled? */
3098 * State which can be shared by multiple contexts:
3100 struct gl_shared_state
3102 mtx_t Mutex
; /**< for thread safety */
3103 GLint RefCount
; /**< Reference count */
3104 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
3105 struct _mesa_HashTable
*BitmapAtlas
; /**< For optimized glBitmap text */
3106 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
3108 /** Default texture objects (shared by all texture units) */
3109 struct gl_texture_object
*DefaultTex
[NUM_TEXTURE_TARGETS
];
3111 /** Fallback texture used when a bound texture is incomplete */
3112 struct gl_texture_object
*FallbackTex
[NUM_TEXTURE_TARGETS
];
3115 * \name Thread safety and statechange notification for texture
3118 * \todo Improve the granularity of locking.
3121 mtx_t TexMutex
; /**< texobj thread safety */
3122 GLuint TextureStateStamp
; /**< state notification for shared tex */
3125 /** Default buffer object for vertex arrays that aren't in VBOs */
3126 struct gl_buffer_object
*NullBufferObj
;
3129 * \name Vertex/geometry/fragment programs
3132 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
3133 struct gl_vertex_program
*DefaultVertexProgram
;
3134 struct gl_fragment_program
*DefaultFragmentProgram
;
3137 /* GL_ATI_fragment_shader */
3138 struct _mesa_HashTable
*ATIShaders
;
3139 struct ati_fragment_shader
*DefaultFragmentShader
;
3141 struct _mesa_HashTable
*BufferObjects
;
3143 /** Table of both gl_shader and gl_shader_program objects */
3144 struct _mesa_HashTable
*ShaderObjects
;
3146 /* GL_EXT_framebuffer_object */
3147 struct _mesa_HashTable
*RenderBuffers
;
3148 struct _mesa_HashTable
*FrameBuffers
;
3151 struct set
*SyncObjects
;
3153 /** GL_ARB_sampler_objects */
3154 struct _mesa_HashTable
*SamplerObjects
;
3157 * Some context in this share group was affected by a GPU reset
3159 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
3160 * been affected by a GPU reset must also return
3161 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
3163 * Once this field becomes true, it is never reset to false.
3165 bool ShareGroupReset
;
3171 * Renderbuffers represent drawing surfaces such as color, depth and/or
3172 * stencil. A framebuffer object has a set of renderbuffers.
3173 * Drivers will typically derive subclasses of this type.
3175 struct gl_renderbuffer
3177 mtx_t Mutex
; /**< for thread safety */
3178 GLuint ClassID
; /**< Useful for drivers */
3180 GLchar
*Label
; /**< GL_KHR_debug */
3182 GLuint Width
, Height
;
3184 GLboolean Purgeable
; /**< Is the buffer purgeable under memory pressure? */
3185 GLboolean AttachedAnytime
; /**< TRUE if it was attached to a framebuffer */
3187 * True for renderbuffers that wrap textures, giving the driver a chance to
3188 * flush render caches through the FinishRenderTexture hook.
3190 * Drivers may also set this on renderbuffers other than those generated by
3191 * glFramebufferTexture(), though it means FinishRenderTexture() would be
3192 * called without a rb->TexImage.
3194 GLboolean NeedsFinishRenderTexture
;
3196 GLenum InternalFormat
; /**< The user-specified format */
3197 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
3198 GL_STENCIL_INDEX. */
3199 mesa_format Format
; /**< The actual renderbuffer memory format */
3201 * Pointer to the texture image if this renderbuffer wraps a texture,
3204 * Note that the reference on the gl_texture_object containing this
3205 * TexImage is held by the gl_renderbuffer_attachment.
3207 struct gl_texture_image
*TexImage
;
3209 /** Delete this renderbuffer */
3210 void (*Delete
)(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
);
3212 /** Allocate new storage for this renderbuffer */
3213 GLboolean (*AllocStorage
)(struct gl_context
*ctx
,
3214 struct gl_renderbuffer
*rb
,
3215 GLenum internalFormat
,
3216 GLuint width
, GLuint height
);
3221 * A renderbuffer attachment points to either a texture object (and specifies
3222 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
3224 struct gl_renderbuffer_attachment
3226 GLenum Type
; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
3230 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
3231 * application supplied renderbuffer object.
3233 struct gl_renderbuffer
*Renderbuffer
;
3236 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
3237 * supplied texture object.
3239 struct gl_texture_object
*Texture
;
3240 GLuint TextureLevel
; /**< Attached mipmap level. */
3241 GLuint CubeMapFace
; /**< 0 .. 5, for cube map textures. */
3242 GLuint Zoffset
; /**< Slice for 3D textures, or layer for both 1D
3243 * and 2D array textures */
3249 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
3250 * In C++ terms, think of this as a base class from which device drivers
3251 * will make derived classes.
3253 struct gl_framebuffer
3255 mtx_t Mutex
; /**< for thread safety */
3257 * If zero, this is a window system framebuffer. If non-zero, this
3258 * is a FBO framebuffer; note that for some devices (i.e. those with
3259 * a natural pixel coordinate system for FBOs that differs from the
3260 * OpenGL/Mesa coordinate system), this means that the viewport,
3261 * polygon face orientation, and polygon stipple will have to be inverted.
3266 GLchar
*Label
; /**< GL_KHR_debug */
3268 GLboolean DeletePending
;
3271 * The framebuffer's visual. Immutable if this is a window system buffer.
3272 * Computed from attachments if user-made FBO.
3274 struct gl_config Visual
;
3277 * Size of frame buffer in pixels. If there are no attachments, then both
3280 GLuint Width
, Height
;
3283 * In the case that the framebuffer has no attachment (i.e.
3284 * GL_ARB_framebuffer_no_attachments) then the geometry of
3285 * the framebuffer is specified by the default values.
3288 GLuint Width
, Height
, Layers
, NumSamples
;
3289 GLboolean FixedSampleLocations
;
3290 /* Derived from NumSamples by the driver so that it can choose a valid
3291 * value for the hardware.
3296 /** \name Drawing bounds (Intersection of buffer size and scissor box)
3297 * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax),
3298 * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax)
3305 /** \name Derived Z buffer stuff */
3307 GLuint _DepthMax
; /**< Max depth buffer value */
3308 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
3309 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
3312 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3315 /** Whether one of Attachment has Type != GL_NONE
3316 * NOTE: the values for Width and Height are set to 0 in case of having
3317 * no attachments, a backend driver supporting the extension
3318 * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments
3319 * and if GL_FALSE, must then use the values in DefaultGeometry to initialize
3320 * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and
3321 * _Ymax do NOT take into account _HasAttachments being false). To get the
3322 * geometry of the framebuffer, the helper functions
3323 * _mesa_geometric_width(),
3324 * _mesa_geometric_height(),
3325 * _mesa_geometric_samples() and
3326 * _mesa_geometric_layers()
3327 * are available that check _HasAttachments.
3329 bool _HasAttachments
;
3331 GLbitfield _IntegerBuffers
; /**< Which color buffers are integer valued */
3333 /* ARB_color_buffer_float */
3334 GLboolean _AllColorBuffersFixedPoint
; /* no integer, no float */
3335 GLboolean _HasSNormOrFloatColorBuffer
;
3338 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3339 * is not layered. For cube maps and cube map arrays, each cube face
3340 * counts as a layer. As the case for Width, Height a backend driver
3341 * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry
3342 * in the case that _HasAttachments is false
3344 GLuint MaxNumLayers
;
3346 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3347 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
3349 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3350 * attribute group and GL_PIXEL attribute group, respectively.
3352 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
3353 GLenum ColorReadBuffer
;
3355 /** Computed from ColorDraw/ReadBuffer above */
3356 GLuint _NumColorDrawBuffers
;
3357 GLint _ColorDrawBufferIndexes
[MAX_DRAW_BUFFERS
]; /**< BUFFER_x or -1 */
3358 GLint _ColorReadBufferIndex
; /* -1 = None */
3359 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
];
3360 struct gl_renderbuffer
*_ColorReadBuffer
;
3362 /** Delete this framebuffer */
3363 void (*Delete
)(struct gl_framebuffer
*fb
);
3368 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3372 GLushort RangeMin
; /**< min value exponent */
3373 GLushort RangeMax
; /**< max value exponent */
3374 GLushort Precision
; /**< number of mantissa bits */
3379 * Limits for vertex, geometry and fragment programs/shaders.
3381 struct gl_program_constants
3383 /* logical limits */
3384 GLuint MaxInstructions
;
3385 GLuint MaxAluInstructions
;
3386 GLuint MaxTexInstructions
;
3387 GLuint MaxTexIndirections
;
3390 GLuint MaxAddressRegs
;
3391 GLuint MaxAddressOffset
; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3392 GLuint MaxParameters
;
3393 GLuint MaxLocalParams
;
3394 GLuint MaxEnvParams
;
3395 /* native/hardware limits */
3396 GLuint MaxNativeInstructions
;
3397 GLuint MaxNativeAluInstructions
;
3398 GLuint MaxNativeTexInstructions
;
3399 GLuint MaxNativeTexIndirections
;
3400 GLuint MaxNativeAttribs
;
3401 GLuint MaxNativeTemps
;
3402 GLuint MaxNativeAddressRegs
;
3403 GLuint MaxNativeParameters
;
3405 GLuint MaxUniformComponents
; /**< Usually == MaxParameters * 4 */
3408 * \name Per-stage input / output limits
3410 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3411 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3412 * ES). This is stored as \c gl_constants::MaxVarying.
3414 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3415 * variables. Each stage as a certain number of outputs that it can feed
3416 * to the next stage and a certain number inputs that it can consume from
3417 * the previous stage.
3419 * Vertex shader inputs do not participate this in this accounting.
3420 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3422 * Fragment shader outputs do not participate this in this accounting.
3423 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3426 GLuint MaxInputComponents
;
3427 GLuint MaxOutputComponents
;
3430 /* ES 2.0 and GL_ARB_ES2_compatibility */
3431 struct gl_precision LowFloat
, MediumFloat
, HighFloat
;
3432 struct gl_precision LowInt
, MediumInt
, HighInt
;
3433 /* GL_ARB_uniform_buffer_object */
3434 GLuint MaxUniformBlocks
;
3435 GLuint MaxCombinedUniformComponents
;
3436 GLuint MaxTextureImageUnits
;
3438 /* GL_ARB_shader_atomic_counters */
3439 GLuint MaxAtomicBuffers
;
3440 GLuint MaxAtomicCounters
;
3442 /* GL_ARB_shader_image_load_store */
3443 GLuint MaxImageUniforms
;
3445 /* GL_ARB_shader_storage_buffer_object */
3446 GLuint MaxShaderStorageBlocks
;
3451 * Constants which may be overridden by device driver during context creation
3452 * but are never changed after that.
3456 GLuint MaxTextureMbytes
; /**< Max memory per image, in MB */
3457 GLuint MaxTextureLevels
; /**< Max mipmap levels. */
3458 GLuint Max3DTextureLevels
; /**< Max mipmap levels for 3D textures */
3459 GLuint MaxCubeTextureLevels
; /**< Max mipmap levels for cube textures */
3460 GLuint MaxArrayTextureLayers
; /**< Max layers in array textures */
3461 GLuint MaxTextureRectSize
; /**< Max rectangle texture size, in pixes */
3462 GLuint MaxTextureCoordUnits
;
3463 GLuint MaxCombinedTextureImageUnits
;
3464 GLuint MaxTextureUnits
; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3465 GLfloat MaxTextureMaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
3466 GLfloat MaxTextureLodBias
; /**< GL_EXT_texture_lod_bias */
3467 GLuint MaxTextureBufferSize
; /**< GL_ARB_texture_buffer_object */
3469 GLuint TextureBufferOffsetAlignment
; /**< GL_ARB_texture_buffer_range */
3471 GLuint MaxArrayLockSize
;
3475 GLfloat MinPointSize
, MaxPointSize
; /**< aliased */
3476 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /**< antialiased */
3477 GLfloat PointSizeGranularity
;
3478 GLfloat MinLineWidth
, MaxLineWidth
; /**< aliased */
3479 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /**< antialiased */
3480 GLfloat LineWidthGranularity
;
3482 GLuint MaxClipPlanes
;
3484 GLfloat MaxShininess
; /**< GL_NV_light_max_exponent */
3485 GLfloat MaxSpotExponent
; /**< GL_NV_light_max_exponent */
3487 GLuint MaxViewportWidth
, MaxViewportHeight
;
3488 GLuint MaxViewports
; /**< GL_ARB_viewport_array */
3489 GLuint ViewportSubpixelBits
; /**< GL_ARB_viewport_array */
3493 } ViewportBounds
; /**< GL_ARB_viewport_array */
3494 GLuint MaxWindowRectangles
; /**< GL_EXT_window_rectangles */
3496 struct gl_program_constants Program
[MESA_SHADER_STAGES
];
3497 GLuint MaxProgramMatrices
;
3498 GLuint MaxProgramMatrixStackDepth
;
3501 GLuint SamplesPassed
;
3504 GLuint PrimitivesGenerated
;
3505 GLuint PrimitivesWritten
;
3506 GLuint VerticesSubmitted
;
3507 GLuint PrimitivesSubmitted
;
3508 GLuint VsInvocations
;
3510 GLuint TessInvocations
;
3511 GLuint GsInvocations
;
3512 GLuint GsPrimitives
;
3513 GLuint FsInvocations
;
3514 GLuint ComputeInvocations
;
3515 GLuint ClInPrimitives
;
3516 GLuint ClOutPrimitives
;
3519 GLuint MaxDrawBuffers
; /**< GL_ARB_draw_buffers */
3521 GLuint MaxColorAttachments
; /**< GL_EXT_framebuffer_object */
3522 GLuint MaxRenderbufferSize
; /**< GL_EXT_framebuffer_object */
3523 GLuint MaxSamples
; /**< GL_ARB_framebuffer_object */
3526 * GL_ARB_framebuffer_no_attachments
3528 GLuint MaxFramebufferWidth
;
3529 GLuint MaxFramebufferHeight
;
3530 GLuint MaxFramebufferLayers
;
3531 GLuint MaxFramebufferSamples
;
3533 /** Number of varying vectors between any two shader stages. */
3537 * GL_ARB_uniform_buffer_object
3539 GLuint MaxCombinedUniformBlocks
;
3540 GLuint MaxUniformBufferBindings
;
3541 GLuint MaxUniformBlockSize
;
3542 GLuint UniformBufferOffsetAlignment
;
3546 * GL_ARB_shader_storage_buffer_object
3548 GLuint MaxCombinedShaderStorageBlocks
;
3549 GLuint MaxShaderStorageBufferBindings
;
3550 GLuint MaxShaderStorageBlockSize
;
3551 GLuint ShaderStorageBufferOffsetAlignment
;
3555 * GL_ARB_explicit_uniform_location
3557 GLuint MaxUserAssignableUniformLocations
;
3559 /** geometry shader */
3560 GLuint MaxGeometryOutputVertices
;
3561 GLuint MaxGeometryTotalOutputComponents
;
3563 GLuint GLSLVersion
; /**< Desktop GLSL version supported (ex: 120 = 1.20) */
3566 * Changes default GLSL extension behavior from "error" to "warn". It's out
3567 * of spec, but it can make some apps work that otherwise wouldn't.
3569 GLboolean ForceGLSLExtensionsWarn
;
3572 * If non-zero, forces GLSL shaders to behave as if they began
3573 * with "#version ForceGLSLVersion".
3575 GLuint ForceGLSLVersion
;
3578 * Allow GLSL #extension directives in the middle of shaders.
3580 GLboolean AllowGLSLExtensionDirectiveMidShader
;
3583 * Force uninitialized variables to default to zero.
3585 GLboolean GLSLZeroInit
;
3588 * Does the driver support real 32-bit integers? (Otherwise, integers are
3589 * simulated via floats.)
3591 GLboolean NativeIntegers
;
3594 * Does VertexID count from zero or from base vertex?
3597 * If desktop GLSL 1.30 or GLSL ES 3.00 are not supported, this field is
3598 * ignored and need not be set.
3600 bool VertexID_is_zero_based
;
3603 * If the driver supports real 32-bit integers, what integer value should be
3604 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3606 GLuint UniformBooleanTrue
;
3609 * Maximum amount of time, measured in nanseconds, that the server can wait.
3611 GLuint64 MaxServerWaitTimeout
;
3613 /** GL_EXT_provoking_vertex */
3614 GLboolean QuadsFollowProvokingVertexConvention
;
3616 /** GL_ARB_viewport_array */
3617 GLenum LayerAndVPIndexProvokingVertex
;
3619 /** OpenGL version 3.0 */
3620 GLbitfield ContextFlags
; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3622 /** OpenGL version 3.2 */
3623 GLbitfield ProfileMask
; /**< Mask of CONTEXT_x_PROFILE_BIT */
3625 /** OpenGL version 4.4 */
3626 GLuint MaxVertexAttribStride
;
3628 /** GL_EXT_transform_feedback */
3629 GLuint MaxTransformFeedbackBuffers
;
3630 GLuint MaxTransformFeedbackSeparateComponents
;
3631 GLuint MaxTransformFeedbackInterleavedComponents
;
3632 GLuint MaxVertexStreams
;
3634 /** GL_EXT_gpu_shader4 */
3635 GLint MinProgramTexelOffset
, MaxProgramTexelOffset
;
3637 /** GL_ARB_texture_gather */
3638 GLuint MinProgramTextureGatherOffset
;
3639 GLuint MaxProgramTextureGatherOffset
;
3640 GLuint MaxProgramTextureGatherComponents
;
3642 /* GL_ARB_robustness */
3643 GLenum ResetStrategy
;
3645 /* GL_ARB_blend_func_extended */
3646 GLuint MaxDualSourceDrawBuffers
;
3649 * Whether the implementation strips out and ignores texture borders.
3651 * Many GPU hardware implementations don't support rendering with texture
3652 * borders and mipmapped textures. (Note: not static border color, but the
3653 * old 1-pixel border around each edge). Implementations then have to do
3654 * slow fallbacks to be correct, or just ignore the border and be fast but
3655 * wrong. Setting the flag strips the border off of TexImage calls,
3656 * providing "fast but wrong" at significantly reduced driver complexity.
3658 * Texture borders are deprecated in GL 3.0.
3660 GLboolean StripTextureBorder
;
3663 * For drivers which can do a better job at eliminating unused uniforms
3664 * than the GLSL compiler.
3666 * XXX Remove these as soon as a better solution is available.
3668 GLboolean GLSLSkipStrictMaxUniformLimitCheck
;
3670 /** Whether gl_FragCoord and gl_FrontFacing are system values. */
3671 bool GLSLFragCoordIsSysVal
;
3672 bool GLSLFrontFacingIsSysVal
;
3675 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3676 * than passing the transform feedback object to the drawing function.
3678 GLboolean AlwaysUseGetTransformFeedbackVertexCount
;
3680 /** GL_ARB_map_buffer_alignment */
3681 GLuint MinMapBufferAlignment
;
3684 * Disable varying packing. This is out of spec, but potentially useful
3685 * for older platforms that supports a limited number of texture
3686 * indirections--on these platforms, unpacking the varyings in the fragment
3687 * shader increases the number of texture indirections by 1, which might
3688 * make some shaders not executable at all.
3690 * Drivers that support transform feedback must set this value to GL_FALSE.
3692 GLboolean DisableVaryingPacking
;
3695 * Should meaningful names be generated for compiler temporary variables?
3697 * Generally, it is not useful to have the compiler generate "meaningful"
3698 * names for temporary variables that it creates. This can, however, be a
3699 * useful debugging aid. In Mesa debug builds or release builds when
3700 * MESA_GLSL is set at run-time, meaningful names will be generated.
3701 * Drivers can also force names to be generated by setting this field.
3702 * For example, the i965 driver may set it when INTEL_DEBUG=vs (to dump
3703 * vertex shader assembly) is set at run-time.
3705 bool GenerateTemporaryNames
;
3708 * Maximum value supported for an index in DrawElements and friends.
3710 * This must be at least (1ull<<24)-1. The default value is
3713 * \since ES 3.0 or GL_ARB_ES3_compatibility
3714 * \sa _mesa_init_constants
3716 GLuint64 MaxElementIndex
;
3719 * Disable interpretation of line continuations (lines ending with a
3720 * backslash character ('\') in GLSL source.
3722 GLboolean DisableGLSLLineContinuations
;
3724 /** GL_ARB_texture_multisample */
3725 GLint MaxColorTextureSamples
;
3726 GLint MaxDepthTextureSamples
;
3727 GLint MaxIntegerSamples
;
3730 * GL_EXT_texture_multisample_blit_scaled implementation assumes that
3731 * samples are laid out in a rectangular grid roughly corresponding to
3732 * sample locations within a pixel. Below SampleMap{2,4,8}x variables
3733 * are used to map indices of rectangular grid to sample numbers within
3734 * a pixel. This mapping of indices to sample numbers must be initialized
3735 * by the driver for the target hardware. For example, if we have the 8X
3736 * MSAA sample number layout (sample positions) for XYZ hardware:
3738 * sample indices layout sample number layout
3739 * --------- ---------
3740 * | 0 | 1 | | a | b |
3741 * --------- ---------
3742 * | 2 | 3 | | c | d |
3743 * --------- ---------
3744 * | 4 | 5 | | e | f |
3745 * --------- ---------
3746 * | 6 | 7 | | g | h |
3747 * --------- ---------
3749 * Where a,b,c,d,e,f,g,h are integers between [0-7].
3751 * Then, initialize the SampleMap8x variable for XYZ hardware as shown
3753 * SampleMap8x = {a, b, c, d, e, f, g, h};
3755 * Follow the logic for sample counts 2-8.
3757 * For 16x the sample indices layout as a 4x4 grid as follows:
3769 uint8_t SampleMap2x
[2];
3770 uint8_t SampleMap4x
[4];
3771 uint8_t SampleMap8x
[8];
3772 uint8_t SampleMap16x
[16];
3774 /** GL_ARB_shader_atomic_counters */
3775 GLuint MaxAtomicBufferBindings
;
3776 GLuint MaxAtomicBufferSize
;
3777 GLuint MaxCombinedAtomicBuffers
;
3778 GLuint MaxCombinedAtomicCounters
;
3780 /** GL_ARB_vertex_attrib_binding */
3781 GLint MaxVertexAttribRelativeOffset
;
3782 GLint MaxVertexAttribBindings
;
3784 /* GL_ARB_shader_image_load_store */
3785 GLuint MaxImageUnits
;
3786 GLuint MaxCombinedShaderOutputResources
;
3787 GLuint MaxImageSamples
;
3788 GLuint MaxCombinedImageUniforms
;
3790 /** GL_ARB_compute_shader */
3791 GLuint MaxComputeWorkGroupCount
[3]; /* Array of x, y, z dimensions */
3792 GLuint MaxComputeWorkGroupSize
[3]; /* Array of x, y, z dimensions */
3793 GLuint MaxComputeWorkGroupInvocations
;
3794 GLuint MaxComputeSharedMemorySize
;
3796 /** GL_ARB_compute_variable_group_size */
3797 GLuint MaxComputeVariableGroupSize
[3]; /* Array of x, y, z dimensions */
3798 GLuint MaxComputeVariableGroupInvocations
;
3800 /** GL_ARB_gpu_shader5 */
3801 GLfloat MinFragmentInterpolationOffset
;
3802 GLfloat MaxFragmentInterpolationOffset
;
3804 GLboolean FakeSWMSAA
;
3806 /** GL_KHR_context_flush_control */
3807 GLenum ContextReleaseBehavior
;
3809 struct gl_shader_compiler_options ShaderCompilerOptions
[MESA_SHADER_STAGES
];
3811 /** GL_ARB_tessellation_shader */
3812 GLuint MaxPatchVertices
;
3813 GLuint MaxTessGenLevel
;
3814 GLuint MaxTessPatchComponents
;
3815 GLuint MaxTessControlTotalOutputComponents
;
3816 bool LowerTessLevel
; /**< Lower gl_TessLevel* from float[n] to vecn? */
3817 bool LowerTCSPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3818 bool LowerTESPatchVerticesIn
; /**< Lower gl_PatchVerticesIn to a uniform */
3819 bool PrimitiveRestartForPatches
;
3820 bool LowerCsDerivedVariables
; /**< Lower gl_GlobalInvocationID and
3821 * gl_LocalInvocationIndex based on
3822 * other builtin variables. */
3824 /** GL_OES_primitive_bounding_box */
3825 bool NoPrimitiveBoundingBoxOutput
;
3830 * Enable flag for each OpenGL extension. Different device drivers will
3831 * enable different extensions at runtime.
3833 struct gl_extensions
3835 GLboolean dummy
; /* don't remove this! */
3836 GLboolean dummy_true
; /* Set true by _mesa_init_extensions(). */
3837 GLboolean dummy_false
; /* Set false by _mesa_init_extensions(). */
3838 GLboolean ANGLE_texture_compression_dxt
;
3839 GLboolean ARB_ES2_compatibility
;
3840 GLboolean ARB_ES3_compatibility
;
3841 GLboolean ARB_ES3_1_compatibility
;
3842 GLboolean ARB_ES3_2_compatibility
;
3843 GLboolean ARB_arrays_of_arrays
;
3844 GLboolean ARB_base_instance
;
3845 GLboolean ARB_blend_func_extended
;
3846 GLboolean ARB_buffer_storage
;
3847 GLboolean ARB_clear_texture
;
3848 GLboolean ARB_clip_control
;
3849 GLboolean ARB_color_buffer_float
;
3850 GLboolean ARB_compute_shader
;
3851 GLboolean ARB_compute_variable_group_size
;
3852 GLboolean ARB_conditional_render_inverted
;
3853 GLboolean ARB_conservative_depth
;
3854 GLboolean ARB_copy_image
;
3855 GLboolean ARB_cull_distance
;
3856 GLboolean ARB_depth_buffer_float
;
3857 GLboolean ARB_depth_clamp
;
3858 GLboolean ARB_depth_texture
;
3859 GLboolean ARB_derivative_control
;
3860 GLboolean ARB_draw_buffers_blend
;
3861 GLboolean ARB_draw_elements_base_vertex
;
3862 GLboolean ARB_draw_indirect
;
3863 GLboolean ARB_draw_instanced
;
3864 GLboolean ARB_fragment_coord_conventions
;
3865 GLboolean ARB_fragment_layer_viewport
;
3866 GLboolean ARB_fragment_program
;
3867 GLboolean ARB_fragment_program_shadow
;
3868 GLboolean ARB_fragment_shader
;
3869 GLboolean ARB_framebuffer_no_attachments
;
3870 GLboolean ARB_framebuffer_object
;
3871 GLboolean ARB_enhanced_layouts
;
3872 GLboolean ARB_explicit_attrib_location
;
3873 GLboolean ARB_explicit_uniform_location
;
3874 GLboolean ARB_gpu_shader5
;
3875 GLboolean ARB_gpu_shader_fp64
;
3876 GLboolean ARB_half_float_vertex
;
3877 GLboolean ARB_indirect_parameters
;
3878 GLboolean ARB_instanced_arrays
;
3879 GLboolean ARB_internalformat_query
;
3880 GLboolean ARB_internalformat_query2
;
3881 GLboolean ARB_map_buffer_range
;
3882 GLboolean ARB_occlusion_query
;
3883 GLboolean ARB_occlusion_query2
;
3884 GLboolean ARB_pipeline_statistics_query
;
3885 GLboolean ARB_point_sprite
;
3886 GLboolean ARB_query_buffer_object
;
3887 GLboolean ARB_robust_buffer_access_behavior
;
3888 GLboolean ARB_sample_shading
;
3889 GLboolean ARB_seamless_cube_map
;
3890 GLboolean ARB_shader_atomic_counter_ops
;
3891 GLboolean ARB_shader_atomic_counters
;
3892 GLboolean ARB_shader_bit_encoding
;
3893 GLboolean ARB_shader_clock
;
3894 GLboolean ARB_shader_draw_parameters
;
3895 GLboolean ARB_shader_group_vote
;
3896 GLboolean ARB_shader_image_load_store
;
3897 GLboolean ARB_shader_image_size
;
3898 GLboolean ARB_shader_precision
;
3899 GLboolean ARB_shader_stencil_export
;
3900 GLboolean ARB_shader_storage_buffer_object
;
3901 GLboolean ARB_shader_subroutine
;
3902 GLboolean ARB_shader_texture_image_samples
;
3903 GLboolean ARB_shader_texture_lod
;
3904 GLboolean ARB_shader_viewport_layer_array
;
3905 GLboolean ARB_shading_language_packing
;
3906 GLboolean ARB_shading_language_420pack
;
3907 GLboolean ARB_shadow
;
3908 GLboolean ARB_stencil_texturing
;
3910 GLboolean ARB_tessellation_shader
;
3911 GLboolean ARB_texture_border_clamp
;
3912 GLboolean ARB_texture_buffer_object
;
3913 GLboolean ARB_texture_buffer_object_rgb32
;
3914 GLboolean ARB_texture_buffer_range
;
3915 GLboolean ARB_texture_compression_bptc
;
3916 GLboolean ARB_texture_compression_rgtc
;
3917 GLboolean ARB_texture_cube_map
;
3918 GLboolean ARB_texture_cube_map_array
;
3919 GLboolean ARB_texture_env_combine
;
3920 GLboolean ARB_texture_env_crossbar
;
3921 GLboolean ARB_texture_env_dot3
;
3922 GLboolean ARB_texture_float
;
3923 GLboolean ARB_texture_gather
;
3924 GLboolean ARB_texture_mirror_clamp_to_edge
;
3925 GLboolean ARB_texture_multisample
;
3926 GLboolean ARB_texture_non_power_of_two
;
3927 GLboolean ARB_texture_stencil8
;
3928 GLboolean ARB_texture_query_levels
;
3929 GLboolean ARB_texture_query_lod
;
3930 GLboolean ARB_texture_rg
;
3931 GLboolean ARB_texture_rgb10_a2ui
;
3932 GLboolean ARB_texture_view
;
3933 GLboolean ARB_timer_query
;
3934 GLboolean ARB_transform_feedback2
;
3935 GLboolean ARB_transform_feedback3
;
3936 GLboolean ARB_transform_feedback_instanced
;
3937 GLboolean ARB_uniform_buffer_object
;
3938 GLboolean ARB_vertex_attrib_64bit
;
3939 GLboolean ARB_vertex_program
;
3940 GLboolean ARB_vertex_shader
;
3941 GLboolean ARB_vertex_type_10f_11f_11f_rev
;
3942 GLboolean ARB_vertex_type_2_10_10_10_rev
;
3943 GLboolean ARB_viewport_array
;
3944 GLboolean EXT_blend_color
;
3945 GLboolean EXT_blend_equation_separate
;
3946 GLboolean EXT_blend_func_separate
;
3947 GLboolean EXT_blend_minmax
;
3948 GLboolean EXT_depth_bounds_test
;
3949 GLboolean EXT_draw_buffers2
;
3950 GLboolean EXT_framebuffer_multisample
;
3951 GLboolean EXT_framebuffer_multisample_blit_scaled
;
3952 GLboolean EXT_framebuffer_sRGB
;
3953 GLboolean EXT_gpu_program_parameters
;
3954 GLboolean EXT_gpu_shader4
;
3955 GLboolean EXT_packed_float
;
3956 GLboolean EXT_pixel_buffer_object
;
3957 GLboolean EXT_point_parameters
;
3958 GLboolean EXT_polygon_offset_clamp
;
3959 GLboolean EXT_provoking_vertex
;
3960 GLboolean EXT_shader_integer_mix
;
3961 GLboolean EXT_shader_samples_identical
;
3962 GLboolean EXT_stencil_two_side
;
3963 GLboolean EXT_texture_array
;
3964 GLboolean EXT_texture_compression_latc
;
3965 GLboolean EXT_texture_compression_s3tc
;
3966 GLboolean EXT_texture_env_dot3
;
3967 GLboolean EXT_texture_filter_anisotropic
;
3968 GLboolean EXT_texture_integer
;
3969 GLboolean EXT_texture_mirror_clamp
;
3970 GLboolean EXT_texture_shared_exponent
;
3971 GLboolean EXT_texture_snorm
;
3972 GLboolean EXT_texture_sRGB
;
3973 GLboolean EXT_texture_sRGB_decode
;
3974 GLboolean EXT_texture_swizzle
;
3975 GLboolean EXT_transform_feedback
;
3976 GLboolean EXT_timer_query
;
3977 GLboolean EXT_vertex_array_bgra
;
3978 GLboolean EXT_window_rectangles
;
3979 GLboolean OES_copy_image
;
3980 GLboolean OES_primitive_bounding_box
;
3981 GLboolean OES_sample_variables
;
3982 GLboolean OES_standard_derivatives
;
3983 GLboolean OES_texture_buffer
;
3984 GLboolean OES_texture_cube_map_array
;
3985 GLboolean OES_viewport_array
;
3986 /* vendor extensions */
3987 GLboolean AMD_performance_monitor
;
3988 GLboolean AMD_pinned_memory
;
3989 GLboolean AMD_seamless_cubemap_per_texture
;
3990 GLboolean AMD_vertex_shader_layer
;
3991 GLboolean AMD_vertex_shader_viewport_index
;
3992 GLboolean ANDROID_extension_pack_es31a
;
3993 GLboolean APPLE_object_purgeable
;
3994 GLboolean ATI_meminfo
;
3995 GLboolean ATI_texture_compression_3dc
;
3996 GLboolean ATI_texture_mirror_once
;
3997 GLboolean ATI_texture_env_combine3
;
3998 GLboolean ATI_fragment_shader
;
3999 GLboolean ATI_separate_stencil
;
4000 GLboolean GREMEDY_string_marker
;
4001 GLboolean INTEL_performance_query
;
4002 GLboolean KHR_blend_equation_advanced
;
4003 GLboolean KHR_blend_equation_advanced_coherent
;
4004 GLboolean KHR_robustness
;
4005 GLboolean KHR_texture_compression_astc_hdr
;
4006 GLboolean KHR_texture_compression_astc_ldr
;
4007 GLboolean KHR_texture_compression_astc_sliced_3d
;
4008 GLboolean MESA_pack_invert
;
4009 GLboolean MESA_shader_framebuffer_fetch
;
4010 GLboolean MESA_shader_framebuffer_fetch_non_coherent
;
4011 GLboolean MESA_shader_integer_functions
;
4012 GLboolean MESA_ycbcr_texture
;
4013 GLboolean NV_conditional_render
;
4014 GLboolean NV_fog_distance
;
4015 GLboolean NV_point_sprite
;
4016 GLboolean NV_primitive_restart
;
4017 GLboolean NV_texture_barrier
;
4018 GLboolean NV_texture_env_combine4
;
4019 GLboolean NV_texture_rectangle
;
4020 GLboolean NV_vdpau_interop
;
4021 GLboolean NVX_gpu_memory_info
;
4022 GLboolean TDFX_texture_compression_FXT1
;
4023 GLboolean OES_EGL_image
;
4024 GLboolean OES_draw_texture
;
4025 GLboolean OES_depth_texture_cube_map
;
4026 GLboolean OES_EGL_image_external
;
4027 GLboolean OES_texture_float
;
4028 GLboolean OES_texture_float_linear
;
4029 GLboolean OES_texture_half_float
;
4030 GLboolean OES_texture_half_float_linear
;
4031 GLboolean OES_compressed_ETC1_RGB8_texture
;
4032 GLboolean OES_geometry_shader
;
4033 GLboolean OES_texture_compression_astc
;
4034 GLboolean extension_sentinel
;
4035 /** The extension string */
4036 const GLubyte
*String
;
4037 /** Number of supported extensions */
4040 * The context version which extension helper functions compare against.
4041 * By default, the value is equal to ctx->Version. This changes to ~0
4042 * while meta is in progress.
4049 * A stack of matrices (projection, modelview, color, texture, etc).
4051 struct gl_matrix_stack
4053 GLmatrix
*Top
; /**< points into Stack */
4054 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
4055 unsigned StackSize
; /**< Number of elements in Stack */
4056 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
4057 GLuint MaxDepth
; /**< size of Stack[] array */
4058 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
4063 * \name Bits for image transfer operations
4064 * \sa __struct gl_contextRec::ImageTransferState.
4067 #define IMAGE_SCALE_BIAS_BIT 0x1
4068 #define IMAGE_SHIFT_OFFSET_BIT 0x2
4069 #define IMAGE_MAP_COLOR_BIT 0x4
4070 #define IMAGE_CLAMP_BIT 0x800
4073 /** Pixel Transfer ops */
4074 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
4075 IMAGE_SHIFT_OFFSET_BIT | \
4076 IMAGE_MAP_COLOR_BIT)
4079 * \name Bits to indicate what state has changed.
4082 #define _NEW_MODELVIEW (1u << 0) /**< gl_context::ModelView */
4083 #define _NEW_PROJECTION (1u << 1) /**< gl_context::Projection */
4084 #define _NEW_TEXTURE_MATRIX (1u << 2) /**< gl_context::TextureMatrix */
4085 #define _NEW_COLOR (1u << 3) /**< gl_context::Color */
4086 #define _NEW_DEPTH (1u << 4) /**< gl_context::Depth */
4087 #define _NEW_EVAL (1u << 5) /**< gl_context::Eval, EvalMap */
4088 #define _NEW_FOG (1u << 6) /**< gl_context::Fog */
4089 #define _NEW_HINT (1u << 7) /**< gl_context::Hint */
4090 #define _NEW_LIGHT (1u << 8) /**< gl_context::Light */
4091 #define _NEW_LINE (1u << 9) /**< gl_context::Line */
4092 #define _NEW_PIXEL (1u << 10) /**< gl_context::Pixel */
4093 #define _NEW_POINT (1u << 11) /**< gl_context::Point */
4094 #define _NEW_POLYGON (1u << 12) /**< gl_context::Polygon */
4095 #define _NEW_POLYGONSTIPPLE (1u << 13) /**< gl_context::PolygonStipple */
4096 #define _NEW_SCISSOR (1u << 14) /**< gl_context::Scissor */
4097 #define _NEW_STENCIL (1u << 15) /**< gl_context::Stencil */
4098 #define _NEW_TEXTURE (1u << 16) /**< gl_context::Texture */
4099 #define _NEW_TRANSFORM (1u << 17) /**< gl_context::Transform */
4100 #define _NEW_VIEWPORT (1u << 18) /**< gl_context::Viewport */
4101 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4102 #define _NEW_ARRAY (1u << 20) /**< gl_context::Array */
4103 #define _NEW_RENDERMODE (1u << 21) /**< gl_context::RenderMode, etc */
4104 #define _NEW_BUFFERS (1u << 22) /**< gl_context::Visual, DrawBuffer, */
4105 #define _NEW_CURRENT_ATTRIB (1u << 23) /**< gl_context::Current */
4106 #define _NEW_MULTISAMPLE (1u << 24) /**< gl_context::Multisample */
4107 #define _NEW_TRACK_MATRIX (1u << 25) /**< gl_context::VertexProgram */
4108 #define _NEW_PROGRAM (1u << 26) /**< New program/shader state */
4109 #define _NEW_PROGRAM_CONSTANTS (1u << 27)
4110 #define _NEW_BUFFER_OBJECT (1u << 28)
4111 #define _NEW_FRAG_CLAMP (1u << 29)
4112 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
4113 #define _NEW_VARYING_VP_INPUTS (1u << 31) /**< gl_context::varying_vp_inputs */
4119 * Composite state flags
4122 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
4128 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
4138 /* This has to be included here. */
4143 * Display list flags.
4144 * Strictly this is a tnl-private concept, but it doesn't seem
4145 * worthwhile adding a tnl private structure just to hold this one bit
4148 #define DLIST_DANGLING_REFS 0x1
4151 /** Opaque declaration of display list payload data type */
4152 union gl_dlist_node
;
4156 * Provide a location where information about a display list can be
4157 * collected. Could be extended with driverPrivate structures,
4158 * etc. in the future.
4160 struct gl_display_list
4163 GLchar
*Label
; /**< GL_KHR_debug */
4164 GLbitfield Flags
; /**< DLIST_x flags */
4165 /** The dlist commands are in a linked list of nodes */
4166 union gl_dlist_node
*Head
;
4171 * State used during display list compilation and execution.
4173 struct gl_dlist_state
4175 GLuint CallDepth
; /**< Current recursion calling depth */
4177 struct gl_display_list
*CurrentList
; /**< List currently being compiled */
4178 union gl_dlist_node
*CurrentBlock
; /**< Pointer to current block of nodes */
4179 GLuint CurrentPos
; /**< Index into current block of nodes */
4181 GLvertexformat ListVtxfmt
;
4183 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
4184 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
4186 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
4187 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
4190 /* State known to have been set by the currently-compiling display
4191 * list. Used to eliminate some redundant state changes.
4199 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
4200 * to small enums suitable for use as an array index.
4203 enum mesa_debug_source
{
4204 MESA_DEBUG_SOURCE_API
,
4205 MESA_DEBUG_SOURCE_WINDOW_SYSTEM
,
4206 MESA_DEBUG_SOURCE_SHADER_COMPILER
,
4207 MESA_DEBUG_SOURCE_THIRD_PARTY
,
4208 MESA_DEBUG_SOURCE_APPLICATION
,
4209 MESA_DEBUG_SOURCE_OTHER
,
4210 MESA_DEBUG_SOURCE_COUNT
4213 enum mesa_debug_type
{
4214 MESA_DEBUG_TYPE_ERROR
,
4215 MESA_DEBUG_TYPE_DEPRECATED
,
4216 MESA_DEBUG_TYPE_UNDEFINED
,
4217 MESA_DEBUG_TYPE_PORTABILITY
,
4218 MESA_DEBUG_TYPE_PERFORMANCE
,
4219 MESA_DEBUG_TYPE_OTHER
,
4220 MESA_DEBUG_TYPE_MARKER
,
4221 MESA_DEBUG_TYPE_PUSH_GROUP
,
4222 MESA_DEBUG_TYPE_POP_GROUP
,
4223 MESA_DEBUG_TYPE_COUNT
4226 enum mesa_debug_severity
{
4227 MESA_DEBUG_SEVERITY_LOW
,
4228 MESA_DEBUG_SEVERITY_MEDIUM
,
4229 MESA_DEBUG_SEVERITY_HIGH
,
4230 MESA_DEBUG_SEVERITY_NOTIFICATION
,
4231 MESA_DEBUG_SEVERITY_COUNT
4237 * Driver-specific state flags.
4239 * These are or'd with gl_context::NewDriverState to notify a driver about
4240 * a state change. The driver sets the flags at context creation and
4241 * the meaning of the bits set is opaque to core Mesa.
4243 struct gl_driver_flags
4245 /** gl_context::Array::_DrawArrays (vertex array state) */
4248 /** gl_context::TransformFeedback::CurrentObject */
4249 uint64_t NewTransformFeedback
;
4251 /** gl_context::TransformFeedback::CurrentObject::shader_program */
4252 uint64_t NewTransformFeedbackProg
;
4254 /** gl_context::RasterDiscard */
4255 uint64_t NewRasterizerDiscard
;
4258 * gl_context::UniformBufferBindings
4259 * gl_shader_program::UniformBlocks
4261 uint64_t NewUniformBuffer
;
4264 * gl_context::ShaderStorageBufferBindings
4265 * gl_shader_program::ShaderStorageBlocks
4267 uint64_t NewShaderStorageBuffer
;
4269 uint64_t NewTextureBuffer
;
4272 * gl_context::AtomicBufferBindings
4274 uint64_t NewAtomicBuffer
;
4277 * gl_context::ImageUnits
4279 uint64_t NewImageUnits
;
4282 * gl_context::TessCtrlProgram::patch_default_*
4284 uint64_t NewDefaultTessLevels
;
4287 struct gl_uniform_buffer_binding
4289 struct gl_buffer_object
*BufferObject
;
4290 /** Start of uniform block data in the buffer */
4292 /** Size of data allowed to be referenced from the buffer (in bytes) */
4295 * glBindBufferBase() indicates that the Size should be ignored and only
4296 * limited by the current size of the BufferObject.
4298 GLboolean AutomaticSize
;
4301 struct gl_shader_storage_buffer_binding
4303 struct gl_buffer_object
*BufferObject
;
4304 /** Start of shader storage block data in the buffer */
4306 /** Size of data allowed to be referenced from the buffer (in bytes) */
4309 * glBindBufferBase() indicates that the Size should be ignored and only
4310 * limited by the current size of the BufferObject.
4312 GLboolean AutomaticSize
;
4316 * ARB_shader_image_load_store image unit.
4318 struct gl_image_unit
4321 * Texture object bound to this unit.
4323 struct gl_texture_object
*TexObj
;
4326 * Level of the texture object bound to this unit.
4331 * \c GL_TRUE if the whole level is bound as an array of layers, \c
4332 * GL_FALSE if only some specific layer of the texture is bound.
4338 * Layer of the texture object bound to this unit as specified by the
4344 * Layer of the texture object bound to this unit, or zero if the
4345 * whole level is bound.
4350 * Access allowed to this texture image. Either \c GL_READ_ONLY,
4351 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
4356 * GL internal format that determines the interpretation of the
4357 * image memory when shader image operations are performed through
4363 * Mesa format corresponding to \c Format.
4365 mesa_format _ActualFormat
;
4370 * Binding point for an atomic counter buffer object.
4372 struct gl_atomic_buffer_binding
4374 struct gl_buffer_object
*BufferObject
;
4380 * Shader subroutines storage
4382 struct gl_subroutine_index_binding
4389 * Mesa rendering context.
4391 * This is the central context data structure for Mesa. Almost all
4392 * OpenGL state is contained in this structure.
4393 * Think of this as a base class from which device drivers will derive
4398 /** State possibly shared with other contexts in the address space */
4399 struct gl_shared_state
*Shared
;
4401 /** \name API function pointer tables */
4405 * The current dispatch table for non-displaylist-saving execution, either
4406 * BeginEnd or OutsideBeginEnd
4408 struct _glapi_table
*Exec
;
4410 * The normal dispatch table for non-displaylist-saving, non-begin/end
4412 struct _glapi_table
*OutsideBeginEnd
;
4413 /** The dispatch table used between glNewList() and glEndList() */
4414 struct _glapi_table
*Save
;
4416 * The dispatch table used between glBegin() and glEnd() (outside of a
4417 * display list). Only valid functions between those two are set, which is
4418 * mostly just the set in a GLvertexformat struct.
4420 struct _glapi_table
*BeginEnd
;
4422 * Dispatch table for when a graphics reset has happened.
4424 struct _glapi_table
*ContextLost
;
4426 * Tracks the current dispatch table out of the 4 above, so that it can be
4427 * re-set on glXMakeCurrent().
4429 struct _glapi_table
*CurrentDispatch
;
4432 struct gl_config Visual
;
4433 struct gl_framebuffer
*DrawBuffer
; /**< buffer for writing */
4434 struct gl_framebuffer
*ReadBuffer
; /**< buffer for reading */
4435 struct gl_framebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
4436 struct gl_framebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
4439 * Device driver function pointer table
4441 struct dd_function_table Driver
;
4443 /** Core/Driver constants */
4444 struct gl_constants Const
;
4446 /** \name The various 4x4 matrix stacks */
4448 struct gl_matrix_stack ModelviewMatrixStack
;
4449 struct gl_matrix_stack ProjectionMatrixStack
;
4450 struct gl_matrix_stack TextureMatrixStack
[MAX_TEXTURE_UNITS
];
4451 struct gl_matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
4452 struct gl_matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
4455 /** Combined modelview and projection matrix */
4456 GLmatrix _ModelProjectMatrix
;
4458 /** \name Display lists */
4459 struct gl_dlist_state ListState
;
4461 GLboolean ExecuteFlag
; /**< Execute GL commands? */
4462 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
4464 /** Extension information */
4465 struct gl_extensions Extensions
;
4467 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
4469 char *VersionString
;
4471 /** \name State attribute stack (for glPush/PopAttrib) */
4473 GLuint AttribStackDepth
;
4474 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
4477 /** \name Renderer attribute groups
4479 * We define a struct for each attribute group to make pushing and popping
4480 * attributes easy. Also it's a good organization.
4483 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
4484 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
4485 struct gl_current_attrib Current
; /**< Current attributes */
4486 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
4487 struct gl_eval_attrib Eval
; /**< Eval attributes */
4488 struct gl_fog_attrib Fog
; /**< Fog attributes */
4489 struct gl_hint_attrib Hint
; /**< Hint attributes */
4490 struct gl_light_attrib Light
; /**< Light attributes */
4491 struct gl_line_attrib Line
; /**< Line attributes */
4492 struct gl_list_attrib List
; /**< List attributes */
4493 struct gl_multisample_attrib Multisample
;
4494 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
4495 struct gl_point_attrib Point
; /**< Point attributes */
4496 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
4497 GLuint PolygonStipple
[32]; /**< Polygon stipple */
4498 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
4499 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
4500 struct gl_texture_attrib Texture
; /**< Texture attributes */
4501 struct gl_transform_attrib Transform
; /**< Transformation attributes */
4502 struct gl_viewport_attrib ViewportArray
[MAX_VIEWPORTS
]; /**< Viewport attributes */
4505 /** \name Client attribute stack */
4507 GLuint ClientAttribStackDepth
;
4508 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
4511 /** \name Client attribute groups */
4513 struct gl_array_attrib Array
; /**< Vertex arrays */
4514 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
4515 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
4516 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
4519 /** \name Other assorted state (not pushed/popped on attribute stack) */
4521 struct gl_pixelmaps PixelMaps
;
4523 struct gl_evaluators EvalMap
; /**< All evaluators */
4524 struct gl_feedback Feedback
; /**< Feedback */
4525 struct gl_selection Select
; /**< Selection */
4527 struct gl_program_state Program
; /**< general program state */
4528 struct gl_vertex_program_state VertexProgram
;
4529 struct gl_fragment_program_state FragmentProgram
;
4530 struct gl_geometry_program_state GeometryProgram
;
4531 struct gl_compute_program_state ComputeProgram
;
4532 struct gl_tess_ctrl_program_state TessCtrlProgram
;
4533 struct gl_tess_eval_program_state TessEvalProgram
;
4534 struct gl_ati_fragment_shader_state ATIFragmentShader
;
4536 struct gl_pipeline_shader_state Pipeline
; /**< GLSL pipeline shader object state */
4537 struct gl_pipeline_object Shader
; /**< GLSL shader object state */
4540 * Current active shader pipeline state
4542 * Almost all internal users want ::_Shader instead of ::Shader. The
4543 * exceptions are bits of legacy GLSL API that do not know about separate
4546 * If a program is active via \c glUseProgram, this will point to
4549 * If a program pipeline is active via \c glBindProgramPipeline, this will
4550 * point to \c ::Pipeline.Current.
4552 * If neither a program nor a program pipeline is active, this will point to
4553 * \c ::Pipeline.Default. This ensures that \c ::_Shader will never be
4556 struct gl_pipeline_object
*_Shader
;
4558 struct gl_query_state Query
; /**< occlusion, timer queries */
4560 struct gl_transform_feedback_state TransformFeedback
;
4562 struct gl_perf_monitor_state PerfMonitor
;
4564 struct gl_buffer_object
*DrawIndirectBuffer
; /** < GL_ARB_draw_indirect */
4565 struct gl_buffer_object
*ParameterBuffer
; /** < GL_ARB_indirect_parameters */
4566 struct gl_buffer_object
*DispatchIndirectBuffer
; /** < GL_ARB_compute_shader */
4568 struct gl_buffer_object
*CopyReadBuffer
; /**< GL_ARB_copy_buffer */
4569 struct gl_buffer_object
*CopyWriteBuffer
; /**< GL_ARB_copy_buffer */
4571 struct gl_buffer_object
*QueryBuffer
; /**< GL_ARB_query_buffer_object */
4574 * Current GL_ARB_uniform_buffer_object binding referenced by
4575 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4577 struct gl_buffer_object
*UniformBuffer
;
4580 * Current GL_ARB_shader_storage_buffer_object binding referenced by
4581 * GL_SHADER_STORAGE_BUFFER target for glBufferData, glMapBuffer, etc.
4583 struct gl_buffer_object
*ShaderStorageBuffer
;
4586 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4587 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4588 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4591 struct gl_uniform_buffer_binding
4592 UniformBufferBindings
[MAX_COMBINED_UNIFORM_BUFFERS
];
4595 * Array of shader storage buffers for ARB_shader_storage_buffer_object
4596 * and GL 4.3. This is set up using glBindBufferRange() or
4597 * glBindBufferBase(). They are associated with shader storage blocks by
4598 * glShaderStorageBlockBinding()'s state in the shader program.
4600 struct gl_shader_storage_buffer_binding
4601 ShaderStorageBufferBindings
[MAX_COMBINED_SHADER_STORAGE_BUFFERS
];
4604 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4607 struct gl_buffer_object
*AtomicBuffer
;
4610 * Object currently associated w/ the GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
4613 struct gl_buffer_object
*ExternalVirtualMemoryBuffer
;
4616 * Array of atomic counter buffer binding points.
4618 struct gl_atomic_buffer_binding
4619 AtomicBufferBindings
[MAX_COMBINED_ATOMIC_BUFFERS
];
4622 * Array of image units for ARB_shader_image_load_store.
4624 struct gl_image_unit ImageUnits
[MAX_IMAGE_UNITS
];
4626 struct gl_subroutine_index_binding SubroutineIndex
[MESA_SHADER_STAGES
];
4629 struct gl_meta_state
*Meta
; /**< for "meta" operations */
4631 /* GL_EXT_framebuffer_object */
4632 struct gl_renderbuffer
*CurrentRenderbuffer
;
4634 GLenum ErrorValue
; /**< Last error code */
4637 * Recognize and silence repeated error debug messages in buggy apps.
4639 const char *ErrorDebugFmtString
;
4640 GLuint ErrorDebugCount
;
4642 /* GL_ARB_debug_output/GL_KHR_debug */
4644 struct gl_debug_state
*Debug
;
4646 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4647 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
4648 uint64_t NewDriverState
; /**< bitwise-or of flags from DriverFlags */
4650 struct gl_driver_flags DriverFlags
;
4652 GLboolean ViewportInitialized
; /**< has viewport size been initialized? */
4654 GLbitfield64 varying_vp_inputs
; /**< mask of VERT_BIT_* flags */
4656 /** \name Derived state */
4657 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
4658 GLfloat _EyeZDir
[3];
4659 GLfloat _ModelViewInvScale
;
4660 GLboolean _NeedEyeCoords
;
4661 GLboolean _ForceEyeCoords
;
4663 GLuint TextureStateTimestamp
; /**< detect changes to shared state */
4665 struct gl_list_extensions
*ListExt
; /**< driver dlist extensions */
4667 /** \name For debugging/development only */
4669 GLboolean FirstTimeCurrent
;
4673 * False if this context was created without a config. This is needed
4674 * because the initial state of glDrawBuffers depends on this
4676 GLboolean HasConfig
;
4678 /** software compression/decompression supported or not */
4679 GLboolean Mesa_DXTn
;
4681 GLboolean TextureFormatSupported
[MESA_FORMAT_COUNT
];
4683 GLboolean RasterDiscard
; /**< GL_RASTERIZER_DISCARD */
4686 * \name Hooks for module contexts.
4688 * These will eventually live in the driver or elsewhere.
4691 void *swrast_context
;
4692 void *swsetup_context
;
4693 void *swtnl_context
;
4694 struct vbo_context
*vbo_context
;
4695 struct st_context
*st
;
4700 * \name NV_vdpau_interop
4703 const void *vdpDevice
;
4704 const void *vdpGetProcAddress
;
4705 struct set
*vdpSurfaces
;
4709 * Has this context observed a GPU reset in any context in the share group?
4711 * Once this field becomes true, it is never reset to false.
4713 GLboolean ShareGroupReset
;
4716 * \name OES_primitive_bounding_box
4718 * Stores the arguments to glPrimitiveBoundingBox
4720 GLfloat PrimitiveBoundingBox
[8];
4724 * Information about memory usage. All sizes are in kilobytes.
4726 struct gl_memory_info
4728 unsigned total_device_memory
; /**< size of device memory, e.g. VRAM */
4729 unsigned avail_device_memory
; /**< free device memory at the moment */
4730 unsigned total_staging_memory
; /**< size of staging memory, e.g. GART */
4731 unsigned avail_staging_memory
; /**< free staging memory at the moment */
4732 unsigned device_memory_evicted
; /**< size of memory evicted (monotonic counter) */
4733 unsigned nr_device_memory_evictions
; /**< # of evictions (monotonic counter) */
4737 extern int MESA_VERBOSE
;
4738 extern int MESA_DEBUG_FLAGS
;
4739 # define MESA_FUNCTION __func__
4741 # define MESA_VERBOSE 0
4742 # define MESA_DEBUG_FLAGS 0
4743 # define MESA_FUNCTION "a function"
4747 /** The MESA_VERBOSE var is a bitmask of these flags */
4750 VERBOSE_VARRAY
= 0x0001,
4751 VERBOSE_TEXTURE
= 0x0002,
4752 VERBOSE_MATERIAL
= 0x0004,
4753 VERBOSE_PIPELINE
= 0x0008,
4754 VERBOSE_DRIVER
= 0x0010,
4755 VERBOSE_STATE
= 0x0020,
4756 VERBOSE_API
= 0x0040,
4757 VERBOSE_DISPLAY_LIST
= 0x0100,
4758 VERBOSE_LIGHTING
= 0x0200,
4759 VERBOSE_PRIMS
= 0x0400,
4760 VERBOSE_VERTS
= 0x0800,
4761 VERBOSE_DISASSEM
= 0x1000,
4762 VERBOSE_DRAW
= 0x2000,
4763 VERBOSE_SWAPBUFFERS
= 0x4000
4767 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4770 DEBUG_SILENT
= (1 << 0),
4771 DEBUG_ALWAYS_FLUSH
= (1 << 1),
4772 DEBUG_INCOMPLETE_TEXTURE
= (1 << 2),
4773 DEBUG_INCOMPLETE_FBO
= (1 << 3)
4780 #endif /* MTYPES_H */