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_context.h"
39 #include "intel_mipmap_tree.h"
40 #include "intel_regions.h"
41 #include "intel_fbo.h"
42 #include "intel_tex.h"
43 #include "intel_blit.h"
45 #include "brw_context.h"
48 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
52 intel_copy_texsubimage(struct intel_context
*intel
,
53 struct intel_texture_image
*intelImage
,
54 GLint dstx
, GLint dsty
,
55 struct intel_renderbuffer
*irb
,
56 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
58 struct gl_context
*ctx
= &intel
->ctx
;
59 struct intel_region
*region
;
60 const GLenum internalFormat
= intelImage
->base
.Base
.InternalFormat
;
61 bool copy_supported
= false;
62 bool copy_supported_with_alpha_override
= false;
64 intel_prepare_render(intel
);
66 if (!intelImage
->mt
|| !irb
|| !irb
->mt
) {
67 if (unlikely(INTEL_DEBUG
& DEBUG_PERF
))
68 fprintf(stderr
, "%s fail %p %p (0x%08x)\n",
69 __FUNCTION__
, intelImage
->mt
, irb
, internalFormat
);
72 region
= irb
->mt
->region
;
76 /* According to the Ivy Bridge PRM, Vol1 Part4, section 1.2.1.2 (Graphics
77 * Data Size Limitations):
79 * The BLT engine is capable of transferring very large quantities of
80 * graphics data. Any graphics data read from and written to the
81 * destination is permitted to represent a number of pixels that
82 * occupies up to 65,536 scan lines and up to 32,768 bytes per scan line
83 * at the destination. The maximum number of pixels that may be
84 * represented per scan line’s worth of graphics data depends on the
87 * Furthermore, intelEmitCopyBlit (which is called below) uses a signed
88 * 16-bit integer to represent buffer pitch, so it can only handle buffer
91 * As a result of these two limitations, we can only use the blitter to do
92 * this copy when the region's pitch is less than 32k.
94 if (region
->pitch
>= 32768)
97 if (intelImage
->base
.Base
.TexObject
->Target
== GL_TEXTURE_1D_ARRAY
||
98 intelImage
->base
.Base
.TexObject
->Target
== GL_TEXTURE_2D_ARRAY
) {
99 perf_debug("no support for array textures\n");
102 copy_supported
= intelImage
->base
.Base
.TexFormat
== intel_rb_format(irb
);
104 /* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
105 if (intel_rb_format(irb
) == MESA_FORMAT_ARGB8888
&&
106 intelImage
->base
.Base
.TexFormat
== MESA_FORMAT_XRGB8888
) {
107 copy_supported
= true;
110 /* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
111 if (intel_rb_format(irb
) == MESA_FORMAT_XRGB8888
&&
112 intelImage
->base
.Base
.TexFormat
== MESA_FORMAT_ARGB8888
) {
113 copy_supported_with_alpha_override
= true;
116 if (!copy_supported
&& !copy_supported_with_alpha_override
) {
117 if (unlikely(INTEL_DEBUG
& DEBUG_PERF
))
118 fprintf(stderr
, "%s mismatched formats %s, %s\n",
120 _mesa_get_format_name(intelImage
->base
.Base
.TexFormat
),
121 _mesa_get_format_name(intel_rb_format(irb
)));
126 GLuint image_x
, image_y
;
129 /* get dest x/y in destination texture */
130 intel_miptree_get_image_offset(intelImage
->mt
,
131 intelImage
->base
.Base
.Level
,
132 intelImage
->base
.Base
.Face
,
135 /* The blitter can't handle Y-tiled buffers. */
136 if (intelImage
->mt
->region
->tiling
== I915_TILING_Y
) {
140 if (_mesa_is_winsys_fbo(ctx
->ReadBuffer
)) {
141 /* Flip vertical orientation for system framebuffers */
142 y
= ctx
->ReadBuffer
->Height
- (y
+ height
);
143 src_pitch
= -region
->pitch
;
145 /* reading from a FBO, y is already oriented the way we like */
146 src_pitch
= region
->pitch
;
149 /* blit from src buffer to texture */
150 if (!intelEmitCopyBlit(intel
,
156 intelImage
->mt
->region
->pitch
,
157 intelImage
->mt
->region
->bo
,
159 intelImage
->mt
->region
->tiling
,
160 irb
->draw_x
+ x
, irb
->draw_y
+ y
,
161 image_x
+ dstx
, image_y
+ dsty
,
168 if (copy_supported_with_alpha_override
)
169 intel_set_teximage_alpha_to_one(ctx
, intelImage
);
176 intelCopyTexSubImage(struct gl_context
*ctx
, GLuint dims
,
177 struct gl_texture_image
*texImage
,
178 GLint xoffset
, GLint yoffset
, GLint zoffset
,
179 struct gl_renderbuffer
*rb
,
181 GLsizei width
, GLsizei height
)
183 struct intel_context
*intel
= intel_context(ctx
);
186 /* Try BLORP first. It can handle almost everything. */
187 if (brw_blorp_copytexsubimage(intel
, rb
, texImage
, x
, y
,
188 xoffset
, yoffset
, width
, height
))
192 /* Next, try the BLT engine. */
193 if (intel_copy_texsubimage(intel
,
194 intel_texture_image(texImage
),
196 intel_renderbuffer(rb
), x
, y
, width
, height
))
200 /* Finally, fall back to meta. This will likely be slow. */
201 perf_debug("%s - fallback to swrast\n", __FUNCTION__
);
202 _mesa_meta_CopyTexSubImage(ctx
, dims
, texImage
,
203 xoffset
, yoffset
, zoffset
,
204 rb
, x
, y
, width
, height
);
209 intelInitTextureCopyImageFuncs(struct dd_function_table
*functions
)
211 functions
->CopyTexSubImage
= intelCopyTexSubImage
;