1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "main/mtypes.h"
29 #include "main/enums.h"
30 #include "main/image.h"
31 #include "main/teximage.h"
32 #include "main/texstate.h"
33 #include "main/fbobject.h"
35 #include "drivers/common/meta.h"
37 #include "intel_screen.h"
38 #include "intel_mipmap_tree.h"
39 #include "intel_regions.h"
40 #include "intel_fbo.h"
41 #include "intel_tex.h"
42 #include "intel_blit.h"
43 #include "brw_context.h"
45 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
49 intel_copy_texsubimage(struct brw_context
*brw
,
50 struct intel_texture_image
*intelImage
,
51 GLint dstx
, GLint dsty
, GLint slice
,
52 struct intel_renderbuffer
*irb
,
53 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
55 const GLenum internalFormat
= intelImage
->base
.Base
.InternalFormat
;
57 intel_prepare_render(brw
);
59 /* glCopyTexSubImage() can be called on a multisampled renderbuffer (if
60 * that renderbuffer is associated with the window system framebuffer),
61 * however the hardware blitter can't handle this case, so fall back to
62 * meta (which can, since it uses ReadPixels).
64 if (irb
->Base
.Base
.NumSamples
!= 0)
67 /* glCopyTexSubImage() can't be called on a multisampled texture. */
68 assert(intelImage
->base
.Base
.NumSamples
== 0);
70 if (!intelImage
->mt
|| !irb
|| !irb
->mt
) {
71 if (unlikely(INTEL_DEBUG
& DEBUG_PERF
))
72 fprintf(stderr
, "%s fail %p %p (0x%08x)\n",
73 __FUNCTION__
, intelImage
->mt
, irb
, internalFormat
);
77 /* blit from src buffer to texture */
78 if (!intel_miptree_blit(brw
,
79 irb
->mt
, irb
->mt_level
, irb
->mt_layer
,
80 x
, y
, irb
->Base
.Base
.Name
== 0,
81 intelImage
->mt
, intelImage
->base
.Base
.Level
,
82 intelImage
->base
.Base
.Face
+ slice
,
84 width
, height
, GL_COPY
)) {
93 intelCopyTexSubImage(struct gl_context
*ctx
, GLuint dims
,
94 struct gl_texture_image
*texImage
,
95 GLint xoffset
, GLint yoffset
, GLint slice
,
96 struct gl_renderbuffer
*rb
,
98 GLsizei width
, GLsizei height
)
100 struct brw_context
*brw
= brw_context(ctx
);
102 /* Try BLORP first. It can handle almost everything. */
103 if (brw_blorp_copytexsubimage(brw
, rb
, texImage
, slice
, x
, y
,
104 xoffset
, yoffset
, width
, height
))
107 /* Next, try the BLT engine. */
108 if (intel_copy_texsubimage(brw
,
109 intel_texture_image(texImage
),
110 xoffset
, yoffset
, slice
,
111 intel_renderbuffer(rb
), x
, y
, width
, height
)) {
115 /* Finally, fall back to meta. This will likely be slow. */
116 perf_debug("%s - fallback to swrast\n", __FUNCTION__
);
117 _mesa_meta_CopyTexSubImage(ctx
, dims
, texImage
,
118 xoffset
, yoffset
, slice
,
119 rb
, x
, y
, width
, height
);
124 intelInitTextureCopyImageFuncs(struct dd_function_table
*functions
)
126 functions
->CopyTexSubImage
= intelCopyTexSubImage
;