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"
34 #include "drivers/common/meta.h"
36 #include "intel_screen.h"
37 #include "intel_context.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"
44 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
47 * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
49 * Do the best we can using the blitter. A future project is to use
50 * the texture engine and fragment programs for these copies.
52 static struct intel_renderbuffer
*
53 get_teximage_readbuffer(struct intel_context
*intel
, GLenum internalFormat
)
55 DBG("%s %s\n", __FUNCTION__
,
56 _mesa_lookup_enum_by_nr(internalFormat
));
58 if (_mesa_is_depth_format(internalFormat
) ||
59 _mesa_is_depthstencil_format(internalFormat
))
60 return intel_get_renderbuffer(intel
->ctx
.ReadBuffer
, BUFFER_DEPTH
);
62 return intel_renderbuffer(intel
->ctx
.ReadBuffer
->_ColorReadBuffer
);
67 intel_copy_texsubimage(struct intel_context
*intel
,
68 struct intel_texture_image
*intelImage
,
69 GLint dstx
, GLint dsty
,
70 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
72 struct gl_context
*ctx
= &intel
->ctx
;
73 struct intel_renderbuffer
*irb
;
74 const GLenum internalFormat
= intelImage
->base
.Base
.InternalFormat
;
75 bool copy_supported
= false;
76 bool copy_supported_with_alpha_override
= false;
78 intel_prepare_render(intel
);
80 irb
= get_teximage_readbuffer(intel
, internalFormat
);
81 if (!intelImage
->mt
|| !irb
|| !irb
->region
) {
82 if (unlikely(INTEL_DEBUG
& DEBUG_FALLBACKS
))
83 fprintf(stderr
, "%s fail %p %p (0x%08x)\n",
84 __FUNCTION__
, intelImage
->mt
, irb
, internalFormat
);
88 copy_supported
= intelImage
->base
.Base
.TexFormat
== irb
->Base
.Format
;
90 /* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
91 if (irb
->Base
.Format
== MESA_FORMAT_ARGB8888
&&
92 intelImage
->base
.Base
.TexFormat
== MESA_FORMAT_XRGB8888
) {
93 copy_supported
= true;
96 /* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
97 if (irb
->Base
.Format
== MESA_FORMAT_XRGB8888
&&
98 intelImage
->base
.Base
.TexFormat
== MESA_FORMAT_ARGB8888
) {
99 copy_supported_with_alpha_override
= true;
102 if (!copy_supported
&& !copy_supported_with_alpha_override
) {
103 if (unlikely(INTEL_DEBUG
& DEBUG_FALLBACKS
))
104 fprintf(stderr
, "%s mismatched formats %s, %s\n",
106 _mesa_get_format_name(intelImage
->base
.Base
.TexFormat
),
107 _mesa_get_format_name(irb
->Base
.Format
));
112 GLuint image_x
, image_y
;
115 /* get dest x/y in destination texture */
116 intel_miptree_get_image_offset(intelImage
->mt
,
117 intelImage
->base
.Base
.Level
,
118 intelImage
->base
.Base
.Face
,
122 /* The blitter can't handle Y-tiled buffers. */
123 if (intelImage
->mt
->region
->tiling
== I915_TILING_Y
) {
127 if (ctx
->ReadBuffer
->Name
== 0) {
128 /* Flip vertical orientation for system framebuffers */
129 y
= ctx
->ReadBuffer
->Height
- (y
+ height
);
130 src_pitch
= -irb
->region
->pitch
;
132 /* reading from a FBO, y is already oriented the way we like */
133 src_pitch
= irb
->region
->pitch
;
136 /* blit from src buffer to texture */
137 if (!intelEmitCopyBlit(intel
,
143 intelImage
->mt
->region
->pitch
,
144 intelImage
->mt
->region
->bo
,
146 intelImage
->mt
->region
->tiling
,
147 irb
->draw_x
+ x
, irb
->draw_y
+ y
,
148 image_x
+ dstx
, image_y
+ dsty
,
155 if (copy_supported_with_alpha_override
)
156 intel_set_teximage_alpha_to_one(ctx
, intelImage
);
163 intelCopyTexSubImage1D(struct gl_context
* ctx
, GLenum target
, GLint level
,
164 GLint xoffset
, GLint x
, GLint y
, GLsizei width
)
166 struct gl_texture_unit
*texUnit
= _mesa_get_current_tex_unit(ctx
);
167 struct gl_texture_object
*texObj
=
168 _mesa_select_tex_object(ctx
, texUnit
, target
);
169 struct gl_texture_image
*texImage
=
170 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
172 /* XXX need to check <border> as in above function? */
174 /* Need to check texture is compatible with source format.
177 if (!intel_copy_texsubimage(intel_context(ctx
),
178 intel_texture_image(texImage
),
179 xoffset
, 0, x
, y
, width
, 1)) {
180 fallback_debug("%s - fallback to swrast\n", __FUNCTION__
);
181 _mesa_meta_CopyTexSubImage1D(ctx
, target
, level
, xoffset
, x
, y
, width
);
187 intelCopyTexSubImage2D(struct gl_context
* ctx
, GLenum target
, GLint level
,
188 GLint xoffset
, GLint yoffset
,
189 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
191 struct gl_texture_unit
*texUnit
= _mesa_get_current_tex_unit(ctx
);
192 struct gl_texture_object
*texObj
=
193 _mesa_select_tex_object(ctx
, texUnit
, target
);
194 struct gl_texture_image
*texImage
=
195 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
197 /* Need to check texture is compatible with source format.
200 if (!intel_copy_texsubimage(intel_context(ctx
),
201 intel_texture_image(texImage
),
202 xoffset
, yoffset
, x
, y
, width
, height
)) {
203 fallback_debug("%s - fallback to swrast\n", __FUNCTION__
);
204 _mesa_meta_CopyTexSubImage2D(ctx
, target
, level
,
205 xoffset
, yoffset
, x
, y
, width
, height
);
211 intelInitTextureCopyImageFuncs(struct dd_function_table
*functions
)
213 functions
->CopyTexSubImage1D
= intelCopyTexSubImage1D
;
214 functions
->CopyTexSubImage2D
= intelCopyTexSubImage2D
;