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 **************************************************************************/
32 #include "swrast/swrast.h"
34 #include "intel_screen.h"
35 #include "intel_context.h"
36 #include "intel_batchbuffer.h"
37 #include "intel_buffers.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 const struct intel_region
*
53 get_teximage_source(struct intel_context
*intel
, GLenum internalFormat
)
55 struct intel_renderbuffer
*irb
;
57 DBG("%s %s\n", __FUNCTION__
,
58 _mesa_lookup_enum_by_nr(internalFormat
));
60 switch (internalFormat
) {
61 case GL_DEPTH_COMPONENT
:
62 case GL_DEPTH_COMPONENT16_ARB
:
63 irb
= intel_get_renderbuffer(intel
->ctx
.ReadBuffer
, BUFFER_DEPTH
);
64 if (irb
&& irb
->region
&& irb
->region
->cpp
== 2)
67 case GL_DEPTH24_STENCIL8_EXT
:
68 case GL_DEPTH_STENCIL_EXT
:
69 irb
= intel_get_renderbuffer(intel
->ctx
.ReadBuffer
, BUFFER_DEPTH
);
70 if (irb
&& irb
->region
&& irb
->region
->cpp
== 4)
75 return intel_readbuf_region(intel
);
77 if (intel
->intelScreen
->cpp
== 2)
78 return intel_readbuf_region(intel
);
87 do_copy_texsubimage(struct intel_context
*intel
,
88 struct intel_texture_image
*intelImage
,
89 GLenum internalFormat
,
90 GLint dstx
, GLint dsty
,
91 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
93 GLcontext
*ctx
= &intel
->ctx
;
94 const struct intel_region
*src
=
95 get_teximage_source(intel
, internalFormat
);
97 if (!intelImage
->mt
|| !src
) {
98 DBG("%s fail %p %p\n", __FUNCTION__
, intelImage
->mt
, src
);
103 LOCK_HARDWARE(intel
);
105 GLuint image_offset
= intel_miptree_image_offset(intelImage
->mt
,
108 const GLint orig_x
= x
;
109 const GLint orig_y
= y
;
110 const struct gl_framebuffer
*fb
= ctx
->DrawBuffer
;
112 if (_mesa_clip_to_region(fb
->_Xmin
, fb
->_Ymin
, fb
->_Xmax
, fb
->_Ymax
,
113 &x
, &y
, &width
, &height
)) {
114 /* Update dst for clipped src. Need to also clip the source rect.
119 if (ctx
->ReadBuffer
->Name
== 0) {
120 /* reading from a window, adjust x, y */
121 __DRIdrawablePrivate
*dPriv
= intel
->driDrawable
;
123 /* window_y = position of window on screen if y=0=bottom */
124 window_y
= intel
->intelScreen
->height
- (dPriv
->y
+ dPriv
->h
);
129 /* reading from a FBO */
131 y
= ctx
->ReadBuffer
->Height
- y
- 1;
135 /* A bit of fiddling to get the blitter to work with -ve
136 * pitches. But we get a nice inverted blit this way, so it's
139 intelEmitCopyBlit(intel
,
143 src
->height
* src
->pitch
* src
->cpp
,
145 intelImage
->mt
->pitch
,
146 intelImage
->mt
->region
->buffer
,
148 intelImage
->mt
->region
->tiled
,
149 x
, y
+ height
, dstx
, dsty
, width
, height
,
152 intel_batchbuffer_flush(intel
->batch
);
157 UNLOCK_HARDWARE(intel
);
160 /* GL_SGIS_generate_mipmap -- this can be accelerated now.
161 * XXX Add a ctx->Driver.GenerateMipmaps() function?
163 if (level
== texObj
->BaseLevel
&& texObj
->GenerateMipmap
) {
164 intel_generate_mipmap(ctx
, target
,
165 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
],
178 intelCopyTexImage1D(GLcontext
* ctx
, GLenum target
, GLint level
,
179 GLenum internalFormat
,
180 GLint x
, GLint y
, GLsizei width
, GLint border
)
182 struct gl_texture_unit
*texUnit
=
183 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
184 struct gl_texture_object
*texObj
=
185 _mesa_select_tex_object(ctx
, texUnit
, target
);
186 struct gl_texture_image
*texImage
=
187 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
192 /* Setup or redefine the texture object, mipmap tree and texture
193 * image. Don't populate yet.
195 ctx
->Driver
.TexImage1D(ctx
, target
, level
, internalFormat
,
197 GL_RGBA
, CHAN_TYPE
, NULL
,
198 &ctx
->DefaultPacking
, texObj
, texImage
);
200 if (!do_copy_texsubimage(intel_context(ctx
),
201 intel_texture_image(texImage
),
202 internalFormat
, 0, 0, x
, y
, width
, 1))
208 _swrast_copy_teximage1d(ctx
, target
, level
, internalFormat
, x
, y
,
213 intelCopyTexImage2D(GLcontext
* ctx
, GLenum target
, GLint level
,
214 GLenum internalFormat
,
215 GLint x
, GLint y
, GLsizei width
, GLsizei height
,
218 struct gl_texture_unit
*texUnit
=
219 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
220 struct gl_texture_object
*texObj
=
221 _mesa_select_tex_object(ctx
, texUnit
, target
);
222 struct gl_texture_image
*texImage
=
223 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
228 /* Setup or redefine the texture object, mipmap tree and texture
229 * image. Don't populate yet.
231 ctx
->Driver
.TexImage2D(ctx
, target
, level
, internalFormat
,
232 width
, height
, border
,
233 GL_RGBA
, CHAN_TYPE
, NULL
,
234 &ctx
->DefaultPacking
, texObj
, texImage
);
237 if (!do_copy_texsubimage(intel_context(ctx
),
238 intel_texture_image(texImage
),
239 internalFormat
, 0, 0, x
, y
, width
, height
))
245 _swrast_copy_teximage2d(ctx
, target
, level
, internalFormat
, x
, y
,
246 width
, height
, border
);
251 intelCopyTexSubImage1D(GLcontext
* ctx
, GLenum target
, GLint level
,
252 GLint xoffset
, GLint x
, GLint y
, GLsizei width
)
254 struct gl_texture_unit
*texUnit
=
255 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
256 struct gl_texture_object
*texObj
=
257 _mesa_select_tex_object(ctx
, texUnit
, target
);
258 struct gl_texture_image
*texImage
=
259 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
260 GLenum internalFormat
= texImage
->InternalFormat
;
262 /* XXX need to check <border> as in above function? */
264 /* Need to check texture is compatible with source format.
267 if (!do_copy_texsubimage(intel_context(ctx
),
268 intel_texture_image(texImage
),
269 internalFormat
, xoffset
, 0, x
, y
, width
, 1)) {
270 _swrast_copy_texsubimage1d(ctx
, target
, level
, xoffset
, x
, y
, width
);
277 intelCopyTexSubImage2D(GLcontext
* ctx
, GLenum target
, GLint level
,
278 GLint xoffset
, GLint yoffset
,
279 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
281 struct gl_texture_unit
*texUnit
=
282 &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
283 struct gl_texture_object
*texObj
=
284 _mesa_select_tex_object(ctx
, texUnit
, target
);
285 struct gl_texture_image
*texImage
=
286 _mesa_select_tex_image(ctx
, texObj
, target
, level
);
287 GLenum internalFormat
= texImage
->InternalFormat
;
290 /* Need to check texture is compatible with source format.
293 if (!do_copy_texsubimage(intel_context(ctx
),
294 intel_texture_image(texImage
),
296 xoffset
, yoffset
, x
, y
, width
, height
)) {
298 DBG("%s - fallback to swrast\n", __FUNCTION__
);
300 _swrast_copy_texsubimage2d(ctx
, target
, level
,
301 xoffset
, yoffset
, x
, y
, width
, height
);