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 **************************************************************************/
33 #include "swrast/swrast.h"
35 #include "intel_screen.h"
36 #include "intel_context.h"
37 #include "intel_batchbuffer.h"
38 #include "intel_buffers.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 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
48 * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
50 * Do the best we can using the blitter. A future project is to use
51 * the texture engine and fragment programs for these copies.
53 static const struct intel_region
*
54 get_teximage_source(struct intel_context
*intel
, GLenum internalFormat
)
56 struct intel_renderbuffer
*irb
;
58 DBG("%s %s\n", __FUNCTION__
,
59 _mesa_lookup_enum_by_nr(internalFormat
));
61 switch (internalFormat
) {
62 case GL_DEPTH_COMPONENT
:
63 case GL_DEPTH_COMPONENT16_ARB
:
64 irb
= intel_get_renderbuffer(intel
->ctx
.ReadBuffer
, BUFFER_DEPTH
);
65 if (irb
&& irb
->region
&& irb
->region
->cpp
== 2)
68 case GL_DEPTH24_STENCIL8_EXT
:
69 case GL_DEPTH_STENCIL_EXT
:
70 irb
= intel_get_renderbuffer(intel
->ctx
.ReadBuffer
, BUFFER_DEPTH
);
71 if (irb
&& irb
->region
&& irb
->region
->cpp
== 4)
76 return intel_readbuf_region(intel
);
78 if (intel
->ctx
.Visual
.rgbBits
== 16)
79 return intel_readbuf_region(intel
);
88 do_copy_texsubimage(struct intel_context
*intel
,
90 struct intel_texture_image
*intelImage
,
91 GLenum internalFormat
,
92 GLint dstx
, GLint dsty
,
93 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
95 GLcontext
*ctx
= &intel
->ctx
;
96 struct gl_texture_object
*texObj
= intelImage
->base
.TexObject
;
97 const struct intel_region
*src
=
98 get_teximage_source(intel
, internalFormat
);
100 if (!intelImage
->mt
|| !src
) {
101 DBG("%s fail %p %p\n", __FUNCTION__
, intelImage
->mt
, src
);
106 LOCK_HARDWARE(intel
);
108 GLuint image_offset
= intel_miptree_image_offset(intelImage
->mt
,
111 const GLint orig_x
= x
;
112 const GLint orig_y
= y
;
113 const struct gl_framebuffer
*fb
= ctx
->DrawBuffer
;
115 if (_mesa_clip_to_region(fb
->_Xmin
, fb
->_Ymin
, fb
->_Xmax
, fb
->_Ymax
,
116 &x
, &y
, &width
, &height
)) {
117 /* Update dst for clipped src. Need to also clip the source rect.
122 if (ctx
->ReadBuffer
->Name
== 0) {
123 /* reading from a window, adjust x, y */
124 __DRIdrawablePrivate
*dPriv
= intel
->driDrawable
;
126 /* window_y = position of window on screen if y=0=bottom */
127 window_y
= intel
->intelScreen
->height
- (dPriv
->y
+ dPriv
->h
);
132 /* reading from a FBO */
134 y
= ctx
->ReadBuffer
->Height
- y
- 1;
138 /* A bit of fiddling to get the blitter to work with -ve
139 * pitches. But we get a nice inverted blit this way, so it's
142 intelEmitCopyBlit(intel
,
146 src
->height
* src
->pitch
* src
->cpp
,
148 intelImage
->mt
->pitch
,
149 intelImage
->mt
->region
->buffer
,
151 intelImage
->mt
->region
->tiled
,
152 x
, y
+ height
, dstx
, dsty
, width
, height
,
155 intel_batchbuffer_flush(intel
->batch
);
160 UNLOCK_HARDWARE(intel
);
162 /* GL_SGIS_generate_mipmap */
163 if (intelImage
->level
== texObj
->BaseLevel
&& texObj
->GenerateMipmap
) {
164 intel_generate_mipmap(ctx
, target
, texObj
);
175 intelCopyTexImage1D(GLcontext
* ctx
, GLenum target
, GLint level
,
176 GLenum internalFormat
,
177 GLint x
, GLint y
, GLsizei width
, GLint border
)
179 struct gl_texture_unit
*texUnit
=
180 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
181 struct gl_texture_object
*texObj
=
182 _mesa_select_tex_object(ctx
, texUnit
, target
);
183 struct gl_texture_image
*texImage
=
184 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
189 /* Setup or redefine the texture object, mipmap tree and texture
190 * image. Don't populate yet.
192 ctx
->Driver
.TexImage1D(ctx
, target
, level
, internalFormat
,
194 GL_RGBA
, CHAN_TYPE
, NULL
,
195 &ctx
->DefaultPacking
, texObj
, texImage
);
197 if (!do_copy_texsubimage(intel_context(ctx
), target
,
198 intel_texture_image(texImage
),
199 internalFormat
, 0, 0, x
, y
, width
, 1))
205 _swrast_copy_teximage1d(ctx
, target
, level
, internalFormat
, x
, y
,
210 intelCopyTexImage2D(GLcontext
* ctx
, GLenum target
, GLint level
,
211 GLenum internalFormat
,
212 GLint x
, GLint y
, GLsizei width
, GLsizei height
,
215 struct gl_texture_unit
*texUnit
=
216 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
217 struct gl_texture_object
*texObj
=
218 _mesa_select_tex_object(ctx
, texUnit
, target
);
219 struct gl_texture_image
*texImage
=
220 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
225 /* Setup or redefine the texture object, mipmap tree and texture
226 * image. Don't populate yet.
228 ctx
->Driver
.TexImage2D(ctx
, target
, level
, internalFormat
,
229 width
, height
, border
,
230 GL_RGBA
, CHAN_TYPE
, NULL
,
231 &ctx
->DefaultPacking
, texObj
, texImage
);
234 if (!do_copy_texsubimage(intel_context(ctx
), target
,
235 intel_texture_image(texImage
),
236 internalFormat
, 0, 0, x
, y
, width
, height
))
242 _swrast_copy_teximage2d(ctx
, target
, level
, internalFormat
, x
, y
,
243 width
, height
, border
);
248 intelCopyTexSubImage1D(GLcontext
* ctx
, GLenum target
, GLint level
,
249 GLint xoffset
, GLint x
, GLint y
, GLsizei width
)
251 struct gl_texture_unit
*texUnit
=
252 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
253 struct gl_texture_object
*texObj
=
254 _mesa_select_tex_object(ctx
, texUnit
, target
);
255 struct gl_texture_image
*texImage
=
256 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
257 GLenum internalFormat
= texImage
->InternalFormat
;
259 /* XXX need to check <border> as in above function? */
261 /* Need to check texture is compatible with source format.
264 if (!do_copy_texsubimage(intel_context(ctx
), target
,
265 intel_texture_image(texImage
),
266 internalFormat
, xoffset
, 0, x
, y
, width
, 1)) {
267 _swrast_copy_texsubimage1d(ctx
, target
, level
, xoffset
, x
, y
, width
);
274 intelCopyTexSubImage2D(GLcontext
* ctx
, GLenum target
, GLint level
,
275 GLint xoffset
, GLint yoffset
,
276 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
278 struct gl_texture_unit
*texUnit
=
279 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
280 struct gl_texture_object
*texObj
=
281 _mesa_select_tex_object(ctx
, texUnit
, target
);
282 struct gl_texture_image
*texImage
=
283 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
284 GLenum internalFormat
= texImage
->InternalFormat
;
287 /* Need to check texture is compatible with source format.
290 if (!do_copy_texsubimage(intel_context(ctx
), target
,
291 intel_texture_image(texImage
),
293 xoffset
, yoffset
, x
, y
, width
, height
)) {
295 DBG("%s - fallback to swrast\n", __FUNCTION__
);
297 _swrast_copy_texsubimage2d(ctx
, target
, level
,
298 xoffset
, yoffset
, x
, y
, width
, height
);