2 * Copyright © 2012 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
26 #include "glformats.h"
30 #include "formatquery.h"
35 #include "genmipmap.h"
36 #include "shaderimage.h"
37 #include "texcompress.h"
38 #include "textureview.h"
41 _is_renderable(struct gl_context
*ctx
, GLenum internalformat
)
43 /* Section 4.4.4 on page 212 of the GLES 3.0.4 spec says:
45 * "An internal format is color-renderable if it is one of the
46 * formats from table 3.13 noted as color-renderable or if it
47 * is unsized format RGBA or RGB."
49 * Therefore, we must accept GL_RGB and GL_RGBA here.
51 if (internalformat
!= GL_RGB
&& internalformat
!= GL_RGBA
&&
52 _mesa_base_fbo_format(ctx
, internalformat
) == 0)
58 /* Handles the cases where either ARB_internalformat_query or
59 * ARB_internalformat_query2 have to return an error.
62 _legal_parameters(struct gl_context
*ctx
, GLenum target
, GLenum internalformat
,
63 GLenum pname
, GLsizei bufSize
, GLint
*params
)
66 bool query2
= _mesa_has_ARB_internalformat_query2(ctx
);
68 /* The ARB_internalformat_query2 spec says:
70 * "The INVALID_ENUM error is generated if the <target> parameter to
71 * GetInternalformati*v is not one of the targets listed in Table 6.xx.
75 case GL_TEXTURE_1D_ARRAY
:
77 case GL_TEXTURE_2D_ARRAY
:
79 case GL_TEXTURE_CUBE_MAP
:
80 case GL_TEXTURE_CUBE_MAP_ARRAY
:
81 case GL_TEXTURE_RECTANGLE
:
82 case GL_TEXTURE_BUFFER
:
84 /* The ARB_internalformat_query spec says:
86 * "If the <target> parameter to GetInternalformativ is not one of
87 * TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY
88 * or RENDERBUFFER then an INVALID_ENUM error is generated.
90 _mesa_error(ctx
, GL_INVALID_ENUM
,
91 "glGetInternalformativ(target=%s)",
92 _mesa_enum_to_string(target
));
101 case GL_TEXTURE_2D_MULTISAMPLE
:
102 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
103 /* The non-existence of ARB_texture_multisample is treated in
104 * ARB_internalformat_query implementation like an error.
107 !(_mesa_has_ARB_texture_multisample(ctx
) || _mesa_is_gles31(ctx
))) {
108 _mesa_error(ctx
, GL_INVALID_ENUM
,
109 "glGetInternalformativ(target=%s)",
110 _mesa_enum_to_string(target
));
117 _mesa_error(ctx
, GL_INVALID_ENUM
,
118 "glGetInternalformativ(target=%s)",
119 _mesa_enum_to_string(target
));
124 /* The ARB_internalformat_query2 spec says:
126 * "The INVALID_ENUM error is generated if the <pname> parameter is
127 * not one of the listed possibilities.
131 case GL_NUM_SAMPLE_COUNTS
:
134 case GL_SRGB_DECODE_ARB
:
135 /* The ARB_internalformat_query2 spec says:
137 * "If ARB_texture_sRGB_decode or EXT_texture_sRGB_decode or
138 * equivalent functionality is not supported, queries for the
139 * SRGB_DECODE_ARB <pname> set the INVALID_ENUM error.
141 if (!_mesa_has_EXT_texture_sRGB_decode(ctx
)) {
142 _mesa_error(ctx
, GL_INVALID_ENUM
,
143 "glGetInternalformativ(pname=%s)",
144 _mesa_enum_to_string(pname
));
148 case GL_INTERNALFORMAT_SUPPORTED
:
149 case GL_INTERNALFORMAT_PREFERRED
:
150 case GL_INTERNALFORMAT_RED_SIZE
:
151 case GL_INTERNALFORMAT_GREEN_SIZE
:
152 case GL_INTERNALFORMAT_BLUE_SIZE
:
153 case GL_INTERNALFORMAT_ALPHA_SIZE
:
154 case GL_INTERNALFORMAT_DEPTH_SIZE
:
155 case GL_INTERNALFORMAT_STENCIL_SIZE
:
156 case GL_INTERNALFORMAT_SHARED_SIZE
:
157 case GL_INTERNALFORMAT_RED_TYPE
:
158 case GL_INTERNALFORMAT_GREEN_TYPE
:
159 case GL_INTERNALFORMAT_BLUE_TYPE
:
160 case GL_INTERNALFORMAT_ALPHA_TYPE
:
161 case GL_INTERNALFORMAT_DEPTH_TYPE
:
162 case GL_INTERNALFORMAT_STENCIL_TYPE
:
167 case GL_MAX_COMBINED_DIMENSIONS
:
168 case GL_COLOR_COMPONENTS
:
169 case GL_DEPTH_COMPONENTS
:
170 case GL_STENCIL_COMPONENTS
:
171 case GL_COLOR_RENDERABLE
:
172 case GL_DEPTH_RENDERABLE
:
173 case GL_STENCIL_RENDERABLE
:
174 case GL_FRAMEBUFFER_RENDERABLE
:
175 case GL_FRAMEBUFFER_RENDERABLE_LAYERED
:
176 case GL_FRAMEBUFFER_BLEND
:
178 case GL_READ_PIXELS_FORMAT
:
179 case GL_READ_PIXELS_TYPE
:
180 case GL_TEXTURE_IMAGE_FORMAT
:
181 case GL_TEXTURE_IMAGE_TYPE
:
182 case GL_GET_TEXTURE_IMAGE_FORMAT
:
183 case GL_GET_TEXTURE_IMAGE_TYPE
:
185 case GL_MANUAL_GENERATE_MIPMAP
:
186 case GL_AUTO_GENERATE_MIPMAP
:
187 case GL_COLOR_ENCODING
:
191 case GL_VERTEX_TEXTURE
:
192 case GL_TESS_CONTROL_TEXTURE
:
193 case GL_TESS_EVALUATION_TEXTURE
:
194 case GL_GEOMETRY_TEXTURE
:
195 case GL_FRAGMENT_TEXTURE
:
196 case GL_COMPUTE_TEXTURE
:
197 case GL_TEXTURE_SHADOW
:
198 case GL_TEXTURE_GATHER
:
199 case GL_TEXTURE_GATHER_SHADOW
:
200 case GL_SHADER_IMAGE_LOAD
:
201 case GL_SHADER_IMAGE_STORE
:
202 case GL_SHADER_IMAGE_ATOMIC
:
203 case GL_IMAGE_TEXEL_SIZE
:
204 case GL_IMAGE_COMPATIBILITY_CLASS
:
205 case GL_IMAGE_PIXEL_FORMAT
:
206 case GL_IMAGE_PIXEL_TYPE
:
207 case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE
:
208 case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST
:
209 case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST
:
210 case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE
:
211 case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE
:
212 case GL_TEXTURE_COMPRESSED
:
213 case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH
:
214 case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT
:
215 case GL_TEXTURE_COMPRESSED_BLOCK_SIZE
:
216 case GL_CLEAR_BUFFER
:
217 case GL_TEXTURE_VIEW
:
218 case GL_VIEW_COMPATIBILITY_CLASS
:
219 /* The ARB_internalformat_query spec says:
221 * "If the <pname> parameter to GetInternalformativ is not SAMPLES
222 * or NUM_SAMPLE_COUNTS, then an INVALID_ENUM error is generated."
225 _mesa_error(ctx
, GL_INVALID_ENUM
,
226 "glGetInternalformativ(pname=%s)",
227 _mesa_enum_to_string(pname
));
234 _mesa_error(ctx
, GL_INVALID_ENUM
,
235 "glGetInternalformativ(pname=%s)",
236 _mesa_enum_to_string(pname
));
240 /* The ARB_internalformat_query spec says:
242 * "If the <bufSize> parameter to GetInternalformativ is negative, then
243 * an INVALID_VALUE error is generated."
245 * Nothing is said in ARB_internalformat_query2 but we assume the same.
248 _mesa_error(ctx
, GL_INVALID_VALUE
,
249 "glGetInternalformativ(target=%s)",
250 _mesa_enum_to_string(target
));
254 /* The ARB_internalformat_query spec says:
256 * "If the <internalformat> parameter to GetInternalformativ is not
257 * color-, depth- or stencil-renderable, then an INVALID_ENUM error is
260 if (!query2
&& !_is_renderable(ctx
, internalformat
)) {
261 _mesa_error(ctx
, GL_INVALID_ENUM
,
262 "glGetInternalformativ(internalformat=%s)",
263 _mesa_enum_to_string(internalformat
));
270 /* Sets the appropriate "unsupported" response as defined by the
271 * ARB_internalformat_query2 spec for each each <pname>.
274 _set_default_response(GLenum pname
, GLint buffer
[16])
276 /* The ARB_internalformat_query2 defines which is the reponse best
277 * representing "not supported" or "not applicable" for each <pname>.
280 * - size- or count-based queries will return zero,
281 * - support-, format- or type-based queries will return NONE,
282 * - boolean-based queries will return FALSE, and
283 * - list-based queries return no entries."
289 case GL_MAX_COMBINED_DIMENSIONS
:
290 /* This value can be a 64-bit value. As the default is the 32-bit query,
291 * we pack 2 32-bit integers. So we need to clean both */
296 case GL_NUM_SAMPLE_COUNTS
:
297 case GL_INTERNALFORMAT_RED_SIZE
:
298 case GL_INTERNALFORMAT_GREEN_SIZE
:
299 case GL_INTERNALFORMAT_BLUE_SIZE
:
300 case GL_INTERNALFORMAT_ALPHA_SIZE
:
301 case GL_INTERNALFORMAT_DEPTH_SIZE
:
302 case GL_INTERNALFORMAT_STENCIL_SIZE
:
303 case GL_INTERNALFORMAT_SHARED_SIZE
:
308 case GL_IMAGE_TEXEL_SIZE
:
309 case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH
:
310 case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT
:
311 case GL_TEXTURE_COMPRESSED_BLOCK_SIZE
:
315 case GL_INTERNALFORMAT_PREFERRED
:
316 case GL_INTERNALFORMAT_RED_TYPE
:
317 case GL_INTERNALFORMAT_GREEN_TYPE
:
318 case GL_INTERNALFORMAT_BLUE_TYPE
:
319 case GL_INTERNALFORMAT_ALPHA_TYPE
:
320 case GL_INTERNALFORMAT_DEPTH_TYPE
:
321 case GL_INTERNALFORMAT_STENCIL_TYPE
:
322 case GL_FRAMEBUFFER_RENDERABLE
:
323 case GL_FRAMEBUFFER_RENDERABLE_LAYERED
:
324 case GL_FRAMEBUFFER_BLEND
:
326 case GL_READ_PIXELS_FORMAT
:
327 case GL_READ_PIXELS_TYPE
:
328 case GL_TEXTURE_IMAGE_FORMAT
:
329 case GL_TEXTURE_IMAGE_TYPE
:
330 case GL_GET_TEXTURE_IMAGE_FORMAT
:
331 case GL_GET_TEXTURE_IMAGE_TYPE
:
332 case GL_MANUAL_GENERATE_MIPMAP
:
333 case GL_AUTO_GENERATE_MIPMAP
:
334 case GL_COLOR_ENCODING
:
337 case GL_SRGB_DECODE_ARB
:
339 case GL_VERTEX_TEXTURE
:
340 case GL_TESS_CONTROL_TEXTURE
:
341 case GL_TESS_EVALUATION_TEXTURE
:
342 case GL_GEOMETRY_TEXTURE
:
343 case GL_FRAGMENT_TEXTURE
:
344 case GL_COMPUTE_TEXTURE
:
345 case GL_TEXTURE_SHADOW
:
346 case GL_TEXTURE_GATHER
:
347 case GL_TEXTURE_GATHER_SHADOW
:
348 case GL_SHADER_IMAGE_LOAD
:
349 case GL_SHADER_IMAGE_STORE
:
350 case GL_SHADER_IMAGE_ATOMIC
:
351 case GL_IMAGE_COMPATIBILITY_CLASS
:
352 case GL_IMAGE_PIXEL_FORMAT
:
353 case GL_IMAGE_PIXEL_TYPE
:
354 case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE
:
355 case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST
:
356 case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST
:
357 case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE
:
358 case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE
:
359 case GL_CLEAR_BUFFER
:
360 case GL_TEXTURE_VIEW
:
361 case GL_VIEW_COMPATIBILITY_CLASS
:
365 case GL_INTERNALFORMAT_SUPPORTED
:
366 case GL_COLOR_COMPONENTS
:
367 case GL_DEPTH_COMPONENTS
:
368 case GL_STENCIL_COMPONENTS
:
369 case GL_COLOR_RENDERABLE
:
370 case GL_DEPTH_RENDERABLE
:
371 case GL_STENCIL_RENDERABLE
:
373 case GL_TEXTURE_COMPRESSED
:
374 buffer
[0] = GL_FALSE
;
378 unreachable("invalid 'pname'");
383 _is_target_supported(struct gl_context
*ctx
, GLenum target
)
385 /* The ARB_internalformat_query2 spec says:
387 * "if a particular type of <target> is not supported by the
388 * implementation the "unsupported" answer should be given.
389 * This is not an error."
397 if (!_mesa_is_desktop_gl(ctx
))
401 case GL_TEXTURE_1D_ARRAY
:
402 if (!_mesa_has_EXT_texture_array(ctx
))
406 case GL_TEXTURE_2D_ARRAY
:
407 if (!(_mesa_has_EXT_texture_array(ctx
) || _mesa_is_gles3(ctx
)))
411 case GL_TEXTURE_CUBE_MAP
:
412 if (!_mesa_has_ARB_texture_cube_map(ctx
))
416 case GL_TEXTURE_CUBE_MAP_ARRAY
:
417 if (!_mesa_has_ARB_texture_cube_map_array(ctx
))
421 case GL_TEXTURE_RECTANGLE
:
422 if (!_mesa_has_NV_texture_rectangle(ctx
))
426 case GL_TEXTURE_BUFFER
:
427 if (!_mesa_has_ARB_texture_buffer_object(ctx
))
431 case GL_RENDERBUFFER
:
432 if (!(_mesa_has_ARB_framebuffer_object(ctx
) ||
433 _mesa_is_gles3(ctx
)))
437 case GL_TEXTURE_2D_MULTISAMPLE
:
438 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
439 if (!(_mesa_has_ARB_texture_multisample(ctx
) ||
440 _mesa_is_gles31(ctx
)))
445 unreachable("invalid target");
452 _is_resource_supported(struct gl_context
*ctx
, GLenum target
,
453 GLenum internalformat
, GLenum pname
)
455 /* From the ARB_internalformat_query2 spec:
457 * In the following descriptions, the term /resource/ is used to generically
458 * refer to an object of the appropriate type that has been created with
459 * <internalformat> and <target>. If the particular <target> and
460 * <internalformat> combination do not make sense, ... the "unsupported"
461 * answer should be given. This is not an error.
464 /* In the ARB_internalformat_query2 spec wording, some <pnames> do not care
465 * about the /resource/ being supported or not, we return 'true' for those.
468 case GL_INTERNALFORMAT_SUPPORTED
:
469 case GL_INTERNALFORMAT_PREFERRED
:
470 case GL_COLOR_COMPONENTS
:
471 case GL_DEPTH_COMPONENTS
:
472 case GL_STENCIL_COMPONENTS
:
473 case GL_COLOR_RENDERABLE
:
474 case GL_DEPTH_RENDERABLE
:
475 case GL_STENCIL_RENDERABLE
:
483 case GL_TEXTURE_1D_ARRAY
:
485 case GL_TEXTURE_2D_ARRAY
:
487 case GL_TEXTURE_CUBE_MAP
:
488 case GL_TEXTURE_CUBE_MAP_ARRAY
:
489 case GL_TEXTURE_RECTANGLE
:
490 /* Based on what Mesa does for glTexImage1D/2D/3D and
491 * glCompressedTexImage1D/2D/3D functions.
493 if (_mesa_base_tex_format(ctx
, internalformat
) < 0)
496 /* additional checks for depth textures */
497 if (!_mesa_legal_texture_base_format_for_target(ctx
, target
, internalformat
))
500 /* additional checks for compressed textures */
501 if (_mesa_is_compressed_format(ctx
, internalformat
) &&
502 (!_mesa_target_can_be_compressed(ctx
, target
, internalformat
, NULL
) ||
503 _mesa_format_no_online_compression(ctx
, internalformat
)))
507 case GL_TEXTURE_2D_MULTISAMPLE
:
508 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
509 /* Based on what Mesa does for glTexImage2D/3DMultisample,
510 * glTexStorage2D/3DMultisample and
511 * glTextureStorage2D/3DMultisample functions.
513 if (!_mesa_is_renderable_texture_format(ctx
, internalformat
))
517 case GL_TEXTURE_BUFFER
:
518 /* Based on what Mesa does for the glTexBuffer function. */
519 if (_mesa_validate_texbuffer_format(ctx
, internalformat
) ==
524 case GL_RENDERBUFFER
:
525 /* Based on what Mesa does for glRenderbufferStorage(Multisample) and
526 * glNamedRenderbufferStorage functions.
528 if (!_mesa_base_fbo_format(ctx
, internalformat
))
533 unreachable("bad target");
540 _is_internalformat_supported(struct gl_context
*ctx
, GLenum target
,
541 GLenum internalformat
)
543 /* From the ARB_internalformat_query2 specification:
545 * "- INTERNALFORMAT_SUPPORTED: If <internalformat> is an internal format
546 * that is supported by the implementation in at least some subset of
547 * possible operations, TRUE is written to <params>. If <internalformat>
548 * if not a valid token for any internal format usage, FALSE is returned.
550 * <internalformats> that must be supported (in GL 4.2 or later) include
552 * - "sized internal formats" from Table 3.12, 3.13, and 3.15,
553 * - any specific "compressed internal format" from Table 3.14,
554 * - any "image unit format" from Table 3.21.
555 * - any generic "compressed internal format" from Table 3.14, if the
556 * implementation accepts it for any texture specification commands, and
557 * - unsized or base internal format, if the implementation accepts
558 * it for texture or image specification.
562 /* At this point a internalformat is valid if it is valid as a texture or
563 * as a renderbuffer format. The checks are different because those methods
564 * return different values when passing non supported internalformats */
565 if (_mesa_base_tex_format(ctx
, internalformat
) < 0 &&
566 _mesa_base_fbo_format(ctx
, internalformat
) == 0)
569 /* Let the driver have the final word */
570 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
,
571 GL_INTERNALFORMAT_SUPPORTED
, buffer
);
573 return (buffer
[0] == GL_TRUE
);
577 _legal_target_for_framebuffer_texture_layer(struct gl_context
*ctx
,
582 case GL_TEXTURE_1D_ARRAY
:
583 case GL_TEXTURE_2D_ARRAY
:
584 case GL_TEXTURE_CUBE_MAP_ARRAY
:
585 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
586 case GL_TEXTURE_CUBE_MAP
:
593 /* default implementation of QueryInternalFormat driverfunc, for
594 * drivers not implementing ARB_internalformat_query2.
597 _mesa_query_internal_format_default(struct gl_context
*ctx
, GLenum target
,
598 GLenum internalFormat
, GLenum pname
,
603 (void) internalFormat
;
607 case GL_NUM_SAMPLE_COUNTS
:
611 case GL_INTERNALFORMAT_SUPPORTED
:
615 case GL_INTERNALFORMAT_PREFERRED
:
616 params
[0] = internalFormat
;
619 case GL_MANUAL_GENERATE_MIPMAP
:
620 case GL_AUTO_GENERATE_MIPMAP
:
623 case GL_SRGB_DECODE_ARB
:
624 case GL_VERTEX_TEXTURE
:
625 case GL_TESS_CONTROL_TEXTURE
:
626 case GL_TESS_EVALUATION_TEXTURE
:
627 case GL_GEOMETRY_TEXTURE
:
628 case GL_FRAGMENT_TEXTURE
:
629 case GL_COMPUTE_TEXTURE
:
630 case GL_SHADER_IMAGE_LOAD
:
631 case GL_SHADER_IMAGE_STORE
:
632 case GL_SHADER_IMAGE_ATOMIC
:
633 case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST
:
634 case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST
:
635 case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE
:
636 case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE
:
637 case GL_CLEAR_BUFFER
:
638 case GL_TEXTURE_VIEW
:
639 case GL_TEXTURE_SHADOW
:
640 case GL_TEXTURE_GATHER
:
641 case GL_TEXTURE_GATHER_SHADOW
:
642 case GL_FRAMEBUFFER_RENDERABLE
:
643 case GL_FRAMEBUFFER_RENDERABLE_LAYERED
:
644 case GL_FRAMEBUFFER_BLEND
:
646 params
[0] = GL_FULL_SUPPORT
;
650 _set_default_response(pname
, params
);
656 * For MAX_WIDTH/MAX_HEIGHT/MAX_DEPTH it returns the equivalent GetInteger
657 * pname for a Getinternalformat pname/target combination. target/pname
658 * combinations that would return 0 due dimension number or unsupported status
659 * should be already filtered out
661 * Note that this means that the returned value would be independent of the
662 * internalformat. This possibility is already mentioned at the Issue 7 of the
663 * arb_internalformat_query2 spec.
666 equivalentSizePname(GLenum target
,
672 case GL_TEXTURE_2D_MULTISAMPLE
:
673 return GL_MAX_TEXTURE_SIZE
;
675 return GL_MAX_3D_TEXTURE_SIZE
;
676 case GL_TEXTURE_CUBE_MAP
:
677 return GL_MAX_CUBE_MAP_TEXTURE_SIZE
;
678 case GL_TEXTURE_RECTANGLE
:
679 return GL_MAX_RECTANGLE_TEXTURE_SIZE
;
680 case GL_RENDERBUFFER
:
681 return GL_MAX_RENDERBUFFER_SIZE
;
682 case GL_TEXTURE_1D_ARRAY
:
683 if (pname
== GL_MAX_HEIGHT
)
684 return GL_MAX_ARRAY_TEXTURE_LAYERS
;
686 return GL_MAX_TEXTURE_SIZE
;
687 case GL_TEXTURE_2D_ARRAY
:
688 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
689 if (pname
== GL_MAX_DEPTH
)
690 return GL_MAX_ARRAY_TEXTURE_LAYERS
;
692 return GL_MAX_TEXTURE_SIZE
;
693 case GL_TEXTURE_CUBE_MAP_ARRAY
:
694 if (pname
== GL_MAX_DEPTH
)
695 return GL_MAX_ARRAY_TEXTURE_LAYERS
;
697 return GL_MAX_CUBE_MAP_TEXTURE_SIZE
;
698 case GL_TEXTURE_BUFFER
:
699 return GL_MAX_TEXTURE_BUFFER_SIZE
;
706 * Returns the dimensions associated to a target. GL_TEXTURE_BUFFER and
707 * GL_RENDERBUFFER have associated a dimension, but they are not textures
708 * per-se, so we can't just call _mesa_get_texture_dimension directly.
711 get_target_dimensions(GLenum target
)
714 case GL_TEXTURE_BUFFER
:
716 case GL_RENDERBUFFER
:
719 return _mesa_get_texture_dimensions(target
);
724 * Returns the minimum amount of dimensions associated to a pname. So for
725 * example, if querying GL_MAX_HEIGHT, it is assumed that your target would
726 * have as minimum 2 dimensions.
728 * Useful to handle sentences like this from query2 spec:
732 * If the resource does not have at least two dimensions
736 get_min_dimensions(GLenum pname
)
751 * Similar to teximage.c:check_multisample_target, but independent of the
755 is_multisample_target(GLenum target
)
758 case GL_TEXTURE_2D_MULTISAMPLE
:
759 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
768 _mesa_GetInternalformativ(GLenum target
, GLenum internalformat
, GLenum pname
,
769 GLsizei bufSize
, GLint
*params
)
772 GET_CURRENT_CONTEXT(ctx
);
774 ASSERT_OUTSIDE_BEGIN_END(ctx
);
776 /* ARB_internalformat_query is also mandatory for ARB_internalformat_query2 */
777 if (!(_mesa_has_ARB_internalformat_query(ctx
) ||
778 _mesa_is_gles3(ctx
))) {
779 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInternalformativ");
783 assert(ctx
->Driver
.QueryInternalFormat
!= NULL
);
785 if (!_legal_parameters(ctx
, target
, internalformat
, pname
, bufSize
, params
))
788 /* initialize the contents of the temporary buffer */
789 memcpy(buffer
, params
, MIN2(bufSize
, 16) * sizeof(GLint
));
791 /* Use the 'unsupported' response defined by the spec for every pname
792 * as the default answer.
794 _set_default_response(pname
, buffer
);
796 if (!_is_target_supported(ctx
, target
) ||
797 !_is_internalformat_supported(ctx
, target
, internalformat
) ||
798 !_is_resource_supported(ctx
, target
, internalformat
, pname
))
804 case GL_NUM_SAMPLE_COUNTS
:
805 /* The ARB_internalformat_query2 sets the response as 'unsupported' for
806 * SAMPLES and NUM_SAMPLE_COUNTS:
808 * "If <internalformat> is not color-renderable, depth-renderable, or
809 * stencil-renderable (as defined in section 4.4.4), or if <target>
810 * does not support multiple samples (ie other than
811 * TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY,
814 if ((target
!= GL_RENDERBUFFER
&&
815 target
!= GL_TEXTURE_2D_MULTISAMPLE
&&
816 target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
) ||
817 !_is_renderable(ctx
, internalformat
))
820 /* The GL ES 3.0 specification, section 6.1.15 page 236 says:
822 * "Since multisampling is not supported for signed and unsigned
823 * integer internal formats, the value of NUM_SAMPLE_COUNTS will be
824 * zero for such formats.
826 if (pname
== GL_NUM_SAMPLE_COUNTS
&& ctx
->API
== API_OPENGLES2
&&
827 ctx
->Version
== 30 && _mesa_is_enum_format_integer(internalformat
)) {
831 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
835 case GL_INTERNALFORMAT_SUPPORTED
:
836 /* Having a supported <internalformat> is implemented as a prerequisite
837 * for all the <pnames>. Thus, if we reach this point, the internalformat is
843 case GL_INTERNALFORMAT_PREFERRED
:
844 /* The ARB_internalformat_query2 spec says:
846 * "- INTERNALFORMAT_PREFERRED: The implementation-preferred internal
847 * format for representing resources of the specified <internalformat> is
848 * returned in <params>.
850 * Therefore, we let the driver answer.
852 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
856 case GL_INTERNALFORMAT_RED_SIZE
:
857 case GL_INTERNALFORMAT_GREEN_SIZE
:
858 case GL_INTERNALFORMAT_BLUE_SIZE
:
859 case GL_INTERNALFORMAT_ALPHA_SIZE
:
860 case GL_INTERNALFORMAT_DEPTH_SIZE
:
861 case GL_INTERNALFORMAT_STENCIL_SIZE
:
862 case GL_INTERNALFORMAT_SHARED_SIZE
:
863 case GL_INTERNALFORMAT_RED_TYPE
:
864 case GL_INTERNALFORMAT_GREEN_TYPE
:
865 case GL_INTERNALFORMAT_BLUE_TYPE
:
866 case GL_INTERNALFORMAT_ALPHA_TYPE
:
867 case GL_INTERNALFORMAT_DEPTH_TYPE
:
868 case GL_INTERNALFORMAT_STENCIL_TYPE
: {
870 mesa_format texformat
;
872 if (target
!= GL_RENDERBUFFER
) {
873 if (!_mesa_legal_get_tex_level_parameter_target(ctx
, target
, true))
876 baseformat
= _mesa_base_tex_format(ctx
, internalformat
);
878 baseformat
= _mesa_base_fbo_format(ctx
, internalformat
);
881 /* Let the driver choose the texture format.
883 * Disclaimer: I am considering that drivers use for renderbuffers the
884 * same format-choice logic as for textures.
886 texformat
= ctx
->Driver
.ChooseTextureFormat(ctx
, target
, internalformat
,
887 GL_NONE
/*format */, GL_NONE
/* type */);
889 if (texformat
== MESA_FORMAT_NONE
|| baseformat
<= 0)
892 /* Implementation based on what Mesa does for glGetTexLevelParameteriv
893 * and glGetRenderbufferParameteriv functions.
895 if (pname
== GL_INTERNALFORMAT_SHARED_SIZE
) {
896 if (_mesa_has_EXT_texture_shared_exponent(ctx
) &&
897 target
!= GL_TEXTURE_BUFFER
&&
898 target
!= GL_RENDERBUFFER
&&
899 texformat
== MESA_FORMAT_R9G9B9E5_FLOAT
) {
905 if (!_mesa_base_format_has_channel(baseformat
, pname
))
909 case GL_INTERNALFORMAT_DEPTH_SIZE
:
910 if (!_mesa_has_ARB_depth_texture(ctx
) &&
911 target
!= GL_RENDERBUFFER
&&
912 target
!= GL_TEXTURE_BUFFER
)
915 case GL_INTERNALFORMAT_RED_SIZE
:
916 case GL_INTERNALFORMAT_GREEN_SIZE
:
917 case GL_INTERNALFORMAT_BLUE_SIZE
:
918 case GL_INTERNALFORMAT_ALPHA_SIZE
:
919 case GL_INTERNALFORMAT_STENCIL_SIZE
:
920 buffer
[0] = _mesa_get_format_bits(texformat
, pname
);
923 case GL_INTERNALFORMAT_DEPTH_TYPE
:
924 if (!_mesa_has_ARB_texture_float(ctx
))
927 case GL_INTERNALFORMAT_RED_TYPE
:
928 case GL_INTERNALFORMAT_GREEN_TYPE
:
929 case GL_INTERNALFORMAT_BLUE_TYPE
:
930 case GL_INTERNALFORMAT_ALPHA_TYPE
:
931 case GL_INTERNALFORMAT_STENCIL_TYPE
:
932 buffer
[0] = _mesa_get_format_datatype(texformat
);
942 /* For WIDTH/HEIGHT/DEPTH/LAYERS there is no reason to think that the
943 * returned values should be different to the values returned by
944 * GetInteger with MAX_TEXTURE_SIZE, MAX_3D_TEXTURE_SIZE, etc.*/
950 GLint min_dimensions
;
952 /* From query2:MAX_HEIGHT spec (as example):
954 * "If the resource does not have at least two dimensions, or if the
955 * resource is unsupported, zero is returned."
957 dimensions
= get_target_dimensions(target
);
958 min_dimensions
= get_min_dimensions(pname
);
959 if (dimensions
< min_dimensions
)
962 get_pname
= equivalentSizePname(target
, pname
);
966 _mesa_GetIntegerv(get_pname
, buffer
);
971 if (!_mesa_has_EXT_texture_array(ctx
))
974 if (!_mesa_is_array_texture(target
))
977 _mesa_GetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS
, buffer
);
980 case GL_MAX_COMBINED_DIMENSIONS
:{
981 GLint64 combined_value
= 1;
982 GLenum max_dimensions_pnames
[] = {
991 /* Combining the dimensions. Note that for array targets, this would
992 * automatically include the value of MAX_LAYERS, as that value is
993 * returned as MAX_HEIGHT or MAX_DEPTH */
994 for (i
= 0; i
< 4; i
++) {
995 if (max_dimensions_pnames
[i
] == GL_SAMPLES
&&
996 !is_multisample_target(target
))
999 _mesa_GetInternalformativ(target
, internalformat
,
1000 max_dimensions_pnames
[i
],
1003 if (current_value
!= 0)
1004 combined_value
*= current_value
;
1007 if (_mesa_is_cube_map_texture(target
))
1008 combined_value
*= 6;
1010 /* We pack the 64-bit value on two 32-bit values. Calling the 32-bit
1011 * query, this would work as far as the value can be hold on a 32-bit
1012 * signed integer. For the 64-bit query, the wrapper around the 32-bit
1013 * query will unpack the value */
1014 memcpy(buffer
, &combined_value
, sizeof(GLint64
));
1018 case GL_COLOR_COMPONENTS
:
1019 /* The ARB_internalformat_query2 spec says:
1021 * "- COLOR_COMPONENTS: If the internal format contains any color
1022 * components (R, G, B, or A), TRUE is returned in <params>.
1023 * If the internal format is unsupported or contains no color
1024 * components, FALSE is returned."
1026 if (_mesa_is_color_format(internalformat
))
1027 buffer
[0] = GL_TRUE
;
1030 case GL_DEPTH_COMPONENTS
:
1031 /* The ARB_internalformat_query2 spec says:
1033 * "- DEPTH_COMPONENTS: If the internal format contains a depth
1034 * component (D), TRUE is returned in <params>. If the internal format
1035 * is unsupported or contains no depth component, FALSE is returned."
1037 if (_mesa_is_depth_format(internalformat
) ||
1038 _mesa_is_depthstencil_format(internalformat
))
1039 buffer
[0] = GL_TRUE
;
1042 case GL_STENCIL_COMPONENTS
:
1043 /* The ARB_internalformat_query2 spec says:
1045 * "- STENCIL_COMPONENTS: If the internal format contains a stencil
1046 * component (S), TRUE is returned in <params>. If the internal format
1047 * is unsupported or contains no stencil component, FALSE is returned.
1049 if (_mesa_is_stencil_format(internalformat
) ||
1050 _mesa_is_depthstencil_format(internalformat
))
1051 buffer
[0] = GL_TRUE
;
1054 case GL_COLOR_RENDERABLE
:
1055 case GL_DEPTH_RENDERABLE
:
1056 case GL_STENCIL_RENDERABLE
:
1057 if (!_is_renderable(ctx
, internalformat
))
1060 if (pname
== GL_COLOR_RENDERABLE
) {
1061 if (!_mesa_is_color_format(internalformat
))
1064 GLenum baseFormat
= _mesa_base_fbo_format(ctx
, internalformat
);
1065 if (baseFormat
!= GL_DEPTH_STENCIL
&&
1066 ((pname
== GL_DEPTH_RENDERABLE
&& baseFormat
!= GL_DEPTH_COMPONENT
) ||
1067 (pname
== GL_STENCIL_RENDERABLE
&& baseFormat
!= GL_STENCIL_INDEX
)))
1071 buffer
[0] = GL_TRUE
;
1074 case GL_FRAMEBUFFER_RENDERABLE_LAYERED
:
1075 if (!_mesa_has_EXT_texture_array(ctx
) ||
1076 _legal_target_for_framebuffer_texture_layer(ctx
, target
))
1079 case GL_FRAMEBUFFER_RENDERABLE
:
1080 case GL_FRAMEBUFFER_BLEND
:
1081 if (!_mesa_has_ARB_framebuffer_object(ctx
))
1084 if (target
== GL_TEXTURE_BUFFER
||
1085 !_is_renderable(ctx
, internalformat
))
1088 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1092 case GL_READ_PIXELS
:
1096 case GL_READ_PIXELS_FORMAT
:
1100 case GL_READ_PIXELS_TYPE
:
1104 case GL_TEXTURE_IMAGE_FORMAT
:
1108 case GL_TEXTURE_IMAGE_TYPE
:
1112 case GL_GET_TEXTURE_IMAGE_FORMAT
:
1116 case GL_GET_TEXTURE_IMAGE_TYPE
:
1121 case GL_MANUAL_GENERATE_MIPMAP
:
1122 case GL_AUTO_GENERATE_MIPMAP
:
1123 if (!_mesa_is_valid_generate_texture_mipmap_target(ctx
, target
) ||
1124 !_mesa_is_valid_generate_texture_mipmap_internalformat(ctx
,
1129 if (pname
== GL_MIPMAP
) {
1130 buffer
[0] = GL_TRUE
;
1133 else if (pname
== GL_MANUAL_GENERATE_MIPMAP
) {
1134 if (!_mesa_has_ARB_framebuffer_object(ctx
))
1138 /* From ARB_internalformat_query2:
1139 * "Dependencies on OpenGL 3.2 (Core Profile)
1140 * In core profiles for OpenGL 3.2 and later versions, queries
1141 * for the AUTO_GENERATE_MIPMAP <pname> return the appropriate
1142 * unsupported response."
1144 if (_mesa_is_desktop_gl(ctx
) && ctx
->Version
>= 32)
1148 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1152 case GL_COLOR_ENCODING
:
1153 if (!_mesa_is_color_format(internalformat
))
1156 if (_mesa_is_srgb_format(internalformat
))
1157 buffer
[0] = GL_SRGB
;
1159 buffer
[0] = GL_LINEAR
;
1163 if (!_mesa_has_EXT_texture_sRGB(ctx
) ||
1164 !_mesa_is_srgb_format(internalformat
)) {
1168 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1173 if (!_mesa_has_EXT_framebuffer_sRGB(ctx
) ||
1174 !_mesa_is_color_format(internalformat
)) {
1178 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1182 case GL_SRGB_DECODE_ARB
:
1183 /* Presence of EXT_texture_sRGB_decode was already verified */
1184 if (!_mesa_has_EXT_texture_sRGB(ctx
) ||
1185 target
== GL_RENDERBUFFER
||
1186 !_mesa_is_srgb_format(internalformat
)) {
1190 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1195 /* If it doesn't allow to set sampler parameters then it would not allow
1196 * to set a filter different to GL_NEAREST. In practice, this method
1197 * only filters out MULTISAMPLE/MULTISAMPLE_ARRAY */
1198 if (!_mesa_target_allows_setting_sampler_parameters(target
))
1201 if (_mesa_is_enum_format_integer(internalformat
))
1204 if (target
== GL_TEXTURE_BUFFER
)
1207 /* At this point we know that multi-texel filtering is supported. We
1208 * need to call the driver to know if it is CAVEAT_SUPPORT or
1211 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1215 case GL_VERTEX_TEXTURE
:
1216 case GL_TESS_CONTROL_TEXTURE
:
1217 case GL_TESS_EVALUATION_TEXTURE
:
1218 case GL_GEOMETRY_TEXTURE
:
1219 case GL_FRAGMENT_TEXTURE
:
1220 case GL_COMPUTE_TEXTURE
:
1221 if (target
== GL_RENDERBUFFER
)
1224 if ((pname
== GL_TESS_CONTROL_TEXTURE
||
1225 pname
== GL_TESS_EVALUATION_TEXTURE
) &&
1226 !_mesa_has_tessellation(ctx
))
1229 if (pname
== GL_GEOMETRY_TEXTURE
&& !_mesa_has_geometry_shaders(ctx
))
1232 if (pname
== GL_COMPUTE_TEXTURE
&& !_mesa_has_compute_shaders(ctx
))
1235 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1239 case GL_TEXTURE_GATHER
:
1240 case GL_TEXTURE_GATHER_SHADOW
:
1241 if (!_mesa_has_ARB_texture_gather(ctx
))
1245 case GL_TEXTURE_SHADOW
:
1246 /* Only depth or depth-stencil image formats make sense in shadow
1248 if (pname
!= GL_TEXTURE_GATHER
&&
1249 !_mesa_is_depth_format(internalformat
) &&
1250 !_mesa_is_depthstencil_format(internalformat
))
1253 /* Validate the target for shadow and gather operations */
1256 case GL_TEXTURE_2D_ARRAY
:
1257 case GL_TEXTURE_CUBE_MAP
:
1258 case GL_TEXTURE_CUBE_MAP_ARRAY
:
1259 case GL_TEXTURE_RECTANGLE
:
1263 case GL_TEXTURE_1D_ARRAY
:
1264 /* 1D and 1DArray textures are not admitted in gather operations */
1265 if (pname
!= GL_TEXTURE_SHADOW
)
1273 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1277 case GL_SHADER_IMAGE_LOAD
:
1278 case GL_SHADER_IMAGE_STORE
:
1279 if (!_mesa_has_ARB_shader_image_load_store(ctx
))
1282 /* We call to _mesa_is_shader_image_format_supported
1283 * using "internalformat" as parameter, because the
1284 * the ARB_internalformat_query2 spec says:
1285 * "In this case the <internalformat> is the value of the <format>
1286 * parameter that is passed to BindImageTexture."
1288 if (target
== GL_RENDERBUFFER
||
1289 !_mesa_is_shader_image_format_supported(ctx
, internalformat
))
1292 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1296 case GL_SHADER_IMAGE_ATOMIC
:
1297 if (!_mesa_has_ARB_shader_image_load_store(ctx
))
1300 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1304 case GL_IMAGE_TEXEL_SIZE
: {
1305 mesa_format image_format
;
1307 if (!_mesa_has_ARB_shader_image_load_store(ctx
) ||
1308 target
== GL_RENDERBUFFER
)
1311 image_format
= _mesa_get_shader_image_format(internalformat
);
1312 if (image_format
== MESA_FORMAT_NONE
)
1315 /* We return bits */
1316 buffer
[0] = (_mesa_get_format_bytes(image_format
) * 8);
1320 case GL_IMAGE_COMPATIBILITY_CLASS
:
1321 if (!_mesa_has_ARB_shader_image_load_store(ctx
) ||
1322 target
== GL_RENDERBUFFER
)
1325 buffer
[0] = _mesa_get_image_format_class(internalformat
);
1328 case GL_IMAGE_PIXEL_FORMAT
: {
1331 if (!_mesa_has_ARB_shader_image_load_store(ctx
) ||
1332 target
== GL_RENDERBUFFER
||
1333 !_mesa_is_shader_image_format_supported(ctx
, internalformat
))
1336 base_format
= _mesa_base_tex_format(ctx
, internalformat
);
1337 if (base_format
== -1)
1340 if (_mesa_is_enum_format_integer(internalformat
))
1341 buffer
[0] = _mesa_base_format_to_integer_format(base_format
);
1343 buffer
[0] = base_format
;
1347 case GL_IMAGE_PIXEL_TYPE
: {
1348 mesa_format image_format
;
1352 if (!_mesa_has_ARB_shader_image_load_store(ctx
) ||
1353 target
== GL_RENDERBUFFER
)
1356 image_format
= _mesa_get_shader_image_format(internalformat
);
1357 if (image_format
== MESA_FORMAT_NONE
)
1360 _mesa_uncompressed_format_to_type_and_comps(image_format
, &datatype
,
1365 buffer
[0] = datatype
;
1369 case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE
: {
1370 if (!_mesa_has_ARB_shader_image_load_store(ctx
))
1373 if (!_mesa_legal_get_tex_level_parameter_target(ctx
, target
, true))
1376 /* From spec: "Equivalent to calling GetTexParameter with <value> set
1377 * to IMAGE_FORMAT_COMPATIBILITY_TYPE."
1379 * GetTexParameter just returns
1380 * tex_obj->ImageFormatCompatibilityType. We create a fake tex_obj
1381 * just with the purpose of getting the value.
1383 struct gl_texture_object
*tex_obj
= _mesa_new_texture_object(ctx
, 0, target
);
1384 buffer
[0] = tex_obj
->ImageFormatCompatibilityType
;
1385 _mesa_delete_texture_object(ctx
, tex_obj
);
1390 case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST
:
1391 case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST
:
1392 case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE
:
1393 case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE
:
1394 if (target
== GL_RENDERBUFFER
)
1397 if (!_mesa_is_depthstencil_format(internalformat
)) {
1398 if (((pname
== GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST
||
1399 pname
== GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE
) &&
1400 !_mesa_is_depth_format(internalformat
)) ||
1401 ((pname
== GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST
||
1402 pname
== GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE
) &&
1403 !_mesa_is_stencil_format(internalformat
)))
1407 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1411 case GL_TEXTURE_COMPRESSED
:
1412 buffer
[0] = _mesa_is_compressed_format(ctx
, internalformat
);
1415 case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH
:
1416 case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT
:
1417 case GL_TEXTURE_COMPRESSED_BLOCK_SIZE
: {
1418 mesa_format mesaformat
;
1421 mesaformat
= _mesa_glenum_to_compressed_format(internalformat
);
1422 if (mesaformat
== MESA_FORMAT_NONE
)
1425 block_size
= _mesa_get_format_bytes(mesaformat
);
1426 assert(block_size
> 0);
1428 if (pname
== GL_TEXTURE_COMPRESSED_BLOCK_SIZE
) {
1429 buffer
[0] = block_size
;
1431 GLuint bwidth
, bheight
;
1433 /* Returns the width and height in pixels. We return bytes */
1434 _mesa_get_format_block_size(mesaformat
, &bwidth
, &bheight
);
1435 assert(bwidth
> 0 && bheight
> 0);
1437 if (pname
== GL_TEXTURE_COMPRESSED_BLOCK_WIDTH
)
1438 buffer
[0] = block_size
/ bheight
;
1440 buffer
[0] = block_size
/ bwidth
;
1445 case GL_CLEAR_BUFFER
:
1446 if (target
!= GL_TEXTURE_BUFFER
)
1449 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1453 case GL_TEXTURE_VIEW
:
1454 case GL_VIEW_COMPATIBILITY_CLASS
:
1455 if (!_mesa_has_ARB_texture_view(ctx
) ||
1456 target
== GL_TEXTURE_BUFFER
||
1457 target
== GL_RENDERBUFFER
)
1460 if (pname
== GL_TEXTURE_VIEW
) {
1461 ctx
->Driver
.QueryInternalFormat(ctx
, target
, internalformat
, pname
,
1464 GLenum view_class
= _mesa_texture_view_lookup_view_class(ctx
,
1466 if (view_class
== GL_FALSE
)
1469 buffer
[0] = view_class
;
1474 unreachable("bad param");
1478 if (bufSize
!= 0 && params
== NULL
) {
1479 /* Emit a warning to aid application debugging, but go ahead and do the
1480 * memcpy (and probably crash) anyway.
1483 "glGetInternalformativ(bufSize = %d, but params = NULL)",
1487 /* Copy the data from the temporary buffer to the buffer supplied by the
1488 * application. Clamp the size of the copy to the size supplied by the
1491 memcpy(params
, buffer
, MIN2(bufSize
, 16) * sizeof(GLint
));
1497 _mesa_GetInternalformati64v(GLenum target
, GLenum internalformat
,
1498 GLenum pname
, GLsizei bufSize
, GLint64
*params
)
1502 GLsizei realSize
= MIN2(bufSize
, 16);
1505 GET_CURRENT_CONTEXT(ctx
);
1507 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1509 if (!_mesa_has_ARB_internalformat_query2(ctx
)) {
1510 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInternalformati64v");
1514 /* For SAMPLES there are cases where params needs to remain unmodified. As
1515 * no pname can return a negative value, we fill params32 with negative
1516 * values as reference values, that can be used to know what copy-back to
1518 memset(params32
, -1, 16);
1520 /* For GL_MAX_COMBINED_DIMENSIONS we need to get back 2 32-bit integers,
1521 * and at the same time we only need 2. So for that pname, we call the
1522 * 32-bit query with bufSize 2, except on the case of bufSize 0, that is
1523 * basically like asking to not get the value, but that is a caller
1525 if (pname
== GL_MAX_COMBINED_DIMENSIONS
&& bufSize
> 0)
1530 _mesa_GetInternalformativ(target
, internalformat
, pname
, callSize
, params32
);
1532 if (pname
== GL_MAX_COMBINED_DIMENSIONS
) {
1533 memcpy(params
, params32
, sizeof(GLint64
));
1535 for (i
= 0; i
< realSize
; i
++) {
1536 /* We only copy back the values that changed */
1537 if (params32
[i
] < 0)
1539 params
[i
] = (GLint64
) params32
[i
];