2 * Mesa 3-D graphics library
4 * Copyright (C) 2014 Intel Corporation. All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
25 * Jason Ekstrand <jason.ekstrand@intel.com>
32 #include "copyimage.h"
36 #include "textureview.h"
37 #include "glformats.h"
39 enum mesa_block_class
{
45 * Prepare the source or destination resource. This involves error
46 * checking and returning the relevant gl_texture_image or gl_renderbuffer.
47 * Note that one of the resulting tex_image or renderbuffer pointers will be
48 * NULL and the other will be non-null.
50 * \param name the texture or renderbuffer name
51 * \param target One of GL_TEXTURE_x target or GL_RENDERBUFFER
52 * \param level mipmap level
53 * \param z src or dest Z
54 * \param depth number of slices/faces/layers to copy
55 * \param tex_image returns a pointer to a texture image
56 * \param renderbuffer returns a pointer to a renderbuffer
57 * \return true if success, false if error
60 prepare_target(struct gl_context
*ctx
, GLuint name
, GLenum target
,
61 int level
, int z
, int depth
,
62 struct gl_texture_image
**tex_image
,
63 struct gl_renderbuffer
**renderbuffer
,
65 GLenum
*internalFormat
,
69 const char *dbg_prefix
)
72 _mesa_error(ctx
, GL_INVALID_VALUE
,
73 "glCopyImageSubData(%sName = %d)", dbg_prefix
, name
);
78 * INVALID_ENUM is generated
79 * * if either <srcTarget> or <dstTarget>
80 * - is not RENDERBUFFER or a valid non-proxy texture target
81 * - is TEXTURE_BUFFER, or
82 * - is one of the cubemap face selectors described in table 3.17,
86 /* Not a texture target, but valid */
88 case GL_TEXTURE_1D_ARRAY
:
91 case GL_TEXTURE_CUBE_MAP
:
92 case GL_TEXTURE_RECTANGLE
:
93 case GL_TEXTURE_2D_ARRAY
:
94 case GL_TEXTURE_CUBE_MAP_ARRAY
:
95 case GL_TEXTURE_2D_MULTISAMPLE
:
96 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
97 /* These are all valid */
99 case GL_TEXTURE_EXTERNAL_OES
:
100 /* Only exists in ES */
101 case GL_TEXTURE_BUFFER
:
103 _mesa_error(ctx
, GL_INVALID_ENUM
,
104 "glCopyImageSubData(%sTarget = %s)", dbg_prefix
,
105 _mesa_enum_to_string(target
));
109 if (target
== GL_RENDERBUFFER
) {
110 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
113 _mesa_error(ctx
, GL_INVALID_VALUE
,
114 "glCopyImageSubData(%sName = %u)", dbg_prefix
, name
);
119 _mesa_error(ctx
, GL_INVALID_OPERATION
,
120 "glCopyImageSubData(%sName incomplete)", dbg_prefix
);
125 _mesa_error(ctx
, GL_INVALID_VALUE
,
126 "glCopyImageSubData(%sLevel = %u)", dbg_prefix
, level
);
131 *format
= rb
->Format
;
132 *internalFormat
= rb
->InternalFormat
;
134 *height
= rb
->Height
;
135 *num_samples
= rb
->NumSamples
;
138 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
141 _mesa_error(ctx
, GL_INVALID_VALUE
,
142 "glCopyImageSubData(%sName = %u)", dbg_prefix
, name
);
146 _mesa_test_texobj_completeness(ctx
, texObj
);
147 if (!texObj
->_BaseComplete
||
148 (level
!= 0 && !texObj
->_MipmapComplete
)) {
149 _mesa_error(ctx
, GL_INVALID_OPERATION
,
150 "glCopyImageSubData(%sName incomplete)", dbg_prefix
);
154 /* Note that target will not be a cube face name */
155 if (texObj
->Target
!= target
) {
157 * From GL_ARB_copy_image specification:
158 * "INVALID_VALUE is generated if either <srcName> or <dstName> does
159 * not correspond to a valid renderbuffer or texture object according
160 * to the corresponding target parameter."
162 _mesa_error(ctx
, GL_INVALID_VALUE
,
163 "glCopyImageSubData(%sTarget = %s)", dbg_prefix
,
164 _mesa_enum_to_string(target
));
168 if (level
< 0 || level
>= MAX_TEXTURE_LEVELS
) {
169 _mesa_error(ctx
, GL_INVALID_VALUE
,
170 "glCopyImageSubData(%sLevel = %d)", dbg_prefix
, level
);
174 if (target
== GL_TEXTURE_CUBE_MAP
) {
177 assert(z
< MAX_FACES
); /* should have been caught earlier */
179 /* make sure all the cube faces are present */
180 for (i
= 0; i
< depth
; i
++) {
181 if (!texObj
->Image
[z
+i
][level
]) {
182 /* missing cube face */
183 _mesa_error(ctx
, GL_INVALID_VALUE
,
184 "glCopyImageSubData(missing cube face)");
189 *tex_image
= texObj
->Image
[z
][level
];
192 *tex_image
= _mesa_select_tex_image(texObj
, target
, level
);
196 _mesa_error(ctx
, GL_INVALID_VALUE
,
197 "glCopyImageSubData(%sLevel = %u)", dbg_prefix
, level
);
201 *renderbuffer
= NULL
;
202 *format
= (*tex_image
)->TexFormat
;
203 *internalFormat
= (*tex_image
)->InternalFormat
;
204 *width
= (*tex_image
)->Width
;
205 *height
= (*tex_image
)->Height
;
206 *num_samples
= (*tex_image
)->NumSamples
;
214 * Check that the x,y,z,width,height,region is within the texture image
216 * \return true if bounds OK, false if regions is out of bounds
219 check_region_bounds(struct gl_context
*ctx
,
221 const struct gl_texture_image
*tex_image
,
222 const struct gl_renderbuffer
*renderbuffer
,
223 int x
, int y
, int z
, int width
, int height
, int depth
,
224 const char *dbg_prefix
)
226 int surfWidth
, surfHeight
, surfDepth
;
228 if (width
< 0 || height
< 0 || depth
< 0) {
229 _mesa_error(ctx
, GL_INVALID_VALUE
,
230 "glCopyImageSubData(%sWidth, %sHeight, or %sDepth is negative)",
231 dbg_prefix
, dbg_prefix
, dbg_prefix
);
235 if (x
< 0 || y
< 0 || z
< 0) {
236 _mesa_error(ctx
, GL_INVALID_VALUE
,
237 "glCopyImageSubData(%sX, %sY, or %sZ is negative)",
238 dbg_prefix
, dbg_prefix
, dbg_prefix
);
242 /* Check X direction */
243 if (target
== GL_RENDERBUFFER
) {
244 surfWidth
= renderbuffer
->Width
;
247 surfWidth
= tex_image
->Width
;
250 if (x
+ width
> surfWidth
) {
251 _mesa_error(ctx
, GL_INVALID_VALUE
,
252 "glCopyImageSubData(%sX or %sWidth exceeds image bounds)",
253 dbg_prefix
, dbg_prefix
);
257 /* Check Y direction */
259 case GL_RENDERBUFFER
:
260 surfHeight
= renderbuffer
->Height
;
263 case GL_TEXTURE_1D_ARRAY
:
267 surfHeight
= tex_image
->Height
;
270 if (y
+ height
> surfHeight
) {
271 _mesa_error(ctx
, GL_INVALID_VALUE
,
272 "glCopyImageSubData(%sY or %sHeight exceeds image bounds)",
273 dbg_prefix
, dbg_prefix
);
277 /* Check Z direction */
279 case GL_RENDERBUFFER
:
282 case GL_TEXTURE_2D_MULTISAMPLE
:
283 case GL_TEXTURE_RECTANGLE
:
286 case GL_TEXTURE_CUBE_MAP
:
289 case GL_TEXTURE_1D_ARRAY
:
290 surfDepth
= tex_image
->Height
;
293 surfDepth
= tex_image
->Depth
;
296 if (z
< 0 || z
+ depth
> surfDepth
) {
297 _mesa_error(ctx
, GL_INVALID_VALUE
,
298 "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
299 dbg_prefix
, dbg_prefix
);
307 compressed_format_compatible(const struct gl_context
*ctx
,
308 GLenum compressedFormat
, GLenum otherFormat
)
310 enum mesa_block_class compressedClass
, otherClass
;
312 /* Two view-incompatible compressed formats are never compatible. */
313 if (_mesa_is_compressed_format(ctx
, otherFormat
)) {
318 * From ARB_copy_image spec:
319 * Table 4.X.1 (Compatible internal formats for copying between
320 * compressed and uncompressed internal formats)
321 * ---------------------------------------------------------------------
322 * | Texel / | Uncompressed | |
323 * | Block | internal format | Compressed internal format |
325 * ---------------------------------------------------------------------
326 * | 128-bit | RGBA32UI, | COMPRESSED_RGBA_S3TC_DXT3_EXT, |
327 * | | RGBA32I, | COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT,|
328 * | | RGBA32F | COMPRESSED_RGBA_S3TC_DXT5_EXT, |
329 * | | | COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT,|
330 * | | | COMPRESSED_RG_RGTC2, |
331 * | | | COMPRESSED_SIGNED_RG_RGTC2, |
332 * | | | COMPRESSED_RGBA_BPTC_UNORM, |
333 * | | | COMPRESSED_SRGB_ALPHA_BPTC_UNORM, |
334 * | | | COMPRESSED_RGB_BPTC_SIGNED_FLOAT, |
335 * | | | COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT |
336 * ---------------------------------------------------------------------
337 * | 64-bit | RGBA16F, RG32F, | COMPRESSED_RGB_S3TC_DXT1_EXT, |
338 * | | RGBA16UI, RG32UI, | COMPRESSED_SRGB_S3TC_DXT1_EXT, |
339 * | | RGBA16I, RG32I, | COMPRESSED_RGBA_S3TC_DXT1_EXT, |
340 * | | RGBA16, | COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT,|
341 * | | RGBA16_SNORM | COMPRESSED_RED_RGTC1, |
342 * | | | COMPRESSED_SIGNED_RED_RGTC1 |
343 * ---------------------------------------------------------------------
346 switch (compressedFormat
) {
347 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
348 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
349 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
350 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
351 case GL_COMPRESSED_RG_RGTC2
:
352 case GL_COMPRESSED_SIGNED_RG_RGTC2
:
353 case GL_COMPRESSED_RGBA_BPTC_UNORM
:
354 case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM
:
355 case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT
:
356 case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT
:
357 compressedClass
= BLOCK_CLASS_128_BITS
;
359 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
360 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
361 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
362 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
363 case GL_COMPRESSED_RED_RGTC1
:
364 case GL_COMPRESSED_SIGNED_RED_RGTC1
:
365 compressedClass
= BLOCK_CLASS_64_BITS
;
367 case GL_COMPRESSED_RGBA8_ETC2_EAC
:
368 case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
:
369 case GL_COMPRESSED_RG11_EAC
:
370 case GL_COMPRESSED_SIGNED_RG11_EAC
:
371 if (_mesa_is_gles(ctx
))
372 compressedClass
= BLOCK_CLASS_128_BITS
;
376 case GL_COMPRESSED_RGB8_ETC2
:
377 case GL_COMPRESSED_SRGB8_ETC2
:
378 case GL_COMPRESSED_R11_EAC
:
379 case GL_COMPRESSED_SIGNED_R11_EAC
:
380 case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
381 case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
:
382 if (_mesa_is_gles(ctx
))
383 compressedClass
= BLOCK_CLASS_64_BITS
;
388 if (_mesa_is_gles(ctx
) && _mesa_is_astc_format(compressedFormat
))
389 compressedClass
= BLOCK_CLASS_128_BITS
;
395 switch (otherFormat
) {
399 otherClass
= BLOCK_CLASS_128_BITS
;
408 case GL_RGBA16_SNORM
:
409 otherClass
= BLOCK_CLASS_64_BITS
;
415 return compressedClass
== otherClass
;
419 copy_format_compatible(const struct gl_context
*ctx
,
420 GLenum srcFormat
, GLenum dstFormat
)
423 * From ARB_copy_image spec:
424 * For the purposes of CopyImageSubData, two internal formats
425 * are considered compatible if any of the following conditions are
427 * * the formats are the same,
428 * * the formats are considered compatible according to the
429 * compatibility rules used for texture views as defined in
430 * section 3.9.X. In particular, if both internal formats are listed
431 * in the same entry of Table 3.X.2, they are considered compatible, or
432 * * one format is compressed and the other is uncompressed and
433 * Table 4.X.1 lists the two formats in the same row.
436 if (_mesa_texture_view_compatible_format(ctx
, srcFormat
, dstFormat
)) {
437 /* Also checks if formats are equal. */
439 } else if (_mesa_is_compressed_format(ctx
, srcFormat
)) {
440 return compressed_format_compatible(ctx
, srcFormat
, dstFormat
);
441 } else if (_mesa_is_compressed_format(ctx
, dstFormat
)) {
442 return compressed_format_compatible(ctx
, dstFormat
, srcFormat
);
449 _mesa_CopyImageSubData(GLuint srcName
, GLenum srcTarget
, GLint srcLevel
,
450 GLint srcX
, GLint srcY
, GLint srcZ
,
451 GLuint dstName
, GLenum dstTarget
, GLint dstLevel
,
452 GLint dstX
, GLint dstY
, GLint dstZ
,
453 GLsizei srcWidth
, GLsizei srcHeight
, GLsizei srcDepth
)
455 GET_CURRENT_CONTEXT(ctx
);
456 struct gl_texture_image
*srcTexImage
, *dstTexImage
;
457 struct gl_renderbuffer
*srcRenderbuffer
, *dstRenderbuffer
;
458 mesa_format srcFormat
, dstFormat
;
459 GLenum srcIntFormat
, dstIntFormat
;
460 GLuint src_w
, src_h
, dst_w
, dst_h
;
461 GLuint src_bw
, src_bh
, dst_bw
, dst_bh
;
462 GLuint src_num_samples
, dst_num_samples
;
463 int dstWidth
, dstHeight
, dstDepth
;
466 if (MESA_VERBOSE
& VERBOSE_API
)
467 _mesa_debug(ctx
, "glCopyImageSubData(%u, %s, %d, %d, %d, %d, "
468 "%u, %s, %d, %d, %d, %d, "
470 srcName
, _mesa_enum_to_string(srcTarget
), srcLevel
,
472 dstName
, _mesa_enum_to_string(dstTarget
), dstLevel
,
474 srcWidth
, srcHeight
, srcDepth
);
476 if (!ctx
->Extensions
.ARB_copy_image
) {
477 _mesa_error(ctx
, GL_INVALID_OPERATION
,
478 "glCopyImageSubData(extension not available)");
482 if (!prepare_target(ctx
, srcName
, srcTarget
, srcLevel
, srcZ
, srcDepth
,
483 &srcTexImage
, &srcRenderbuffer
, &srcFormat
,
484 &srcIntFormat
, &src_w
, &src_h
, &src_num_samples
, "src"))
487 if (!prepare_target(ctx
, dstName
, dstTarget
, dstLevel
, dstZ
, srcDepth
,
488 &dstTexImage
, &dstRenderbuffer
, &dstFormat
,
489 &dstIntFormat
, &dst_w
, &dst_h
, &dst_num_samples
, "dst"))
492 _mesa_get_format_block_size(srcFormat
, &src_bw
, &src_bh
);
494 /* Section 18.3.2 (Copying Between Images) of the OpenGL 4.5 Core Profile
497 * An INVALID_VALUE error is generated if the dimensions of either
498 * subregion exceeds the boundaries of the corresponding image object,
499 * or if the image format is compressed and the dimensions of the
500 * subregion fail to meet the alignment constraints of the format.
502 * and Section 8.7 (Compressed Texture Images) says:
504 * An INVALID_OPERATION error is generated if any of the following
507 * * width is not a multiple of four, and width + xoffset is not
508 * equal to the value of TEXTURE_WIDTH.
509 * * height is not a multiple of four, and height + yoffset is not
510 * equal to the value of TEXTURE_HEIGHT.
512 * so we take that to mean that you can copy the "last" block of a
513 * compressed texture image even if it's smaller than the minimum block
516 if ((srcX
% src_bw
!= 0) || (srcY
% src_bh
!= 0) ||
517 (srcWidth
% src_bw
!= 0 && (srcX
+ srcWidth
) != src_w
) ||
518 (srcHeight
% src_bh
!= 0 && (srcY
+ srcHeight
) != src_h
)) {
519 _mesa_error(ctx
, GL_INVALID_VALUE
,
520 "glCopyImageSubData(unaligned src rectangle)");
524 _mesa_get_format_block_size(dstFormat
, &dst_bw
, &dst_bh
);
525 if ((dstX
% dst_bw
!= 0) || (dstY
% dst_bh
!= 0)) {
526 _mesa_error(ctx
, GL_INVALID_VALUE
,
527 "glCopyImageSubData(unaligned dst rectangle)");
531 /* From the GL_ARB_copy_image spec:
533 * "The dimensions are always specified in texels, even for compressed
534 * texture formats. But it should be noted that if only one of the
535 * source and destination textures is compressed then the number of
536 * texels touched in the compressed image will be a factor of the
537 * block size larger than in the uncompressed image."
539 * So, if copying from compressed to uncompressed, the dest region is
540 * shrunk by the src block size factor. If copying from uncompressed
541 * to compressed, the dest region is grown by the dest block size factor.
542 * Note that we're passed the _source_ width, height, depth and those
543 * dimensions are never changed.
545 dstWidth
= srcWidth
* dst_bw
/ src_bw
;
546 dstHeight
= srcHeight
* dst_bh
/ src_bh
;
549 if (!check_region_bounds(ctx
, srcTarget
, srcTexImage
, srcRenderbuffer
,
550 srcX
, srcY
, srcZ
, srcWidth
, srcHeight
, srcDepth
,
554 if (!check_region_bounds(ctx
, dstTarget
, dstTexImage
, dstRenderbuffer
,
555 dstX
, dstY
, dstZ
, dstWidth
, dstHeight
, dstDepth
,
559 /* Section 18.3.2 (Copying Between Images) of the OpenGL 4.5 Core Profile
562 * An INVALID_OPERATION error is generated if either object is a texture
563 * and the texture is not complete, if the source and destination internal
564 * formats are not compatible, or if the number of samples do not match.
566 if (!copy_format_compatible(ctx
, srcIntFormat
, dstIntFormat
)) {
567 _mesa_error(ctx
, GL_INVALID_OPERATION
,
568 "glCopyImageSubData(internalFormat mismatch)");
572 if (src_num_samples
!= dst_num_samples
) {
573 _mesa_error(ctx
, GL_INVALID_OPERATION
,
574 "glCopyImageSubData(number of samples mismatch)");
578 /* loop over 2D slices/faces/layers */
579 for (i
= 0; i
< srcDepth
; ++i
) {
580 int newSrcZ
= srcZ
+ i
;
581 int newDstZ
= dstZ
+ i
;
584 srcTexImage
->TexObject
->Target
== GL_TEXTURE_CUBE_MAP
) {
585 /* need to update srcTexImage pointer for the cube face */
586 assert(srcZ
+ i
< MAX_FACES
);
587 srcTexImage
= srcTexImage
->TexObject
->Image
[srcZ
+ i
][srcLevel
];
593 dstTexImage
->TexObject
->Target
== GL_TEXTURE_CUBE_MAP
) {
594 /* need to update dstTexImage pointer for the cube face */
595 assert(dstZ
+ i
< MAX_FACES
);
596 dstTexImage
= dstTexImage
->TexObject
->Image
[dstZ
+ i
][dstLevel
];
601 ctx
->Driver
.CopyImageSubData(ctx
,
602 srcTexImage
, srcRenderbuffer
,
604 dstTexImage
, dstRenderbuffer
,
606 srcWidth
, srcHeight
);