1 /**************************************************************************
3 * Copyright 2008 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 **************************************************************************/
29 * Rectangle-related helper functions.
33 #include "pipe/p_defines.h"
34 #include "pipe/p_format.h"
35 #include "pipe/p_context.h"
36 #include "pipe/p_screen.h"
37 #include "util/u_format.h"
38 #include "util/u_rect.h"
42 * Copy 2D rect from one place to another.
43 * Position and sizes are in pixels.
44 * src_stride may be negative to do vertical flip of pixels from source.
47 util_copy_rect(ubyte
* dst
,
48 enum pipe_format format
,
60 int src_stride_pos
= src_stride
< 0 ? -src_stride
: src_stride
;
61 int blocksize
= util_format_get_blocksize(format
);
62 int blockwidth
= util_format_get_blockwidth(format
);
63 int blockheight
= util_format_get_blockheight(format
);
65 assert(blocksize
> 0);
66 assert(blockwidth
> 0);
67 assert(blockheight
> 0);
75 width
= (width
+ blockwidth
- 1)/blockwidth
;
76 height
= (height
+ blockheight
- 1)/blockheight
;
80 dst
+= dst_x
* blocksize
;
81 src
+= src_x
* blocksize
;
82 dst
+= dst_y
* dst_stride
;
83 src
+= src_y
* src_stride_pos
;
86 if (width
== dst_stride
&& width
== src_stride
)
87 memcpy(dst
, src
, height
* width
);
89 for (i
= 0; i
< height
; i
++) {
90 memcpy(dst
, src
, width
);
98 util_fill_rect(ubyte
* dst
,
99 enum pipe_format format
,
109 int blocksize
= util_format_get_blocksize(format
);
110 int blockwidth
= util_format_get_blockwidth(format
);
111 int blockheight
= util_format_get_blockheight(format
);
113 assert(blocksize
> 0);
114 assert(blockwidth
> 0);
115 assert(blockheight
> 0);
120 dst_y
/= blockheight
;
121 width
= (width
+ blockwidth
- 1)/blockwidth
;
122 height
= (height
+ blockheight
- 1)/blockheight
;
124 dst
+= dst_x
* blocksize
;
125 dst
+= dst_y
* dst_stride
;
126 width_size
= width
* blocksize
;
130 if(dst_stride
== width_size
)
131 memset(dst
, (ubyte
) value
, height
* width_size
);
133 for (i
= 0; i
< height
; i
++) {
134 memset(dst
, (ubyte
) value
, width_size
);
140 for (i
= 0; i
< height
; i
++) {
141 uint16_t *row
= (uint16_t *)dst
;
142 for (j
= 0; j
< width
; j
++)
143 *row
++ = (uint16_t) value
;
148 for (i
= 0; i
< height
; i
++) {
149 uint32_t *row
= (uint32_t *)dst
;
150 for (j
= 0; j
< width
; j
++)
164 * Fallback function for pipe->surface_copy().
165 * Note: (X,Y)=(0,0) is always the upper-left corner.
166 * if do_flip, flip the image vertically on its way from src rect to dst rect.
167 * XXX should probably put this in new u_surface.c file...
170 util_surface_copy(struct pipe_context
*pipe
,
172 struct pipe_surface
*dst
,
173 unsigned dst_x
, unsigned dst_y
,
174 struct pipe_surface
*src
,
175 unsigned src_x
, unsigned src_y
,
176 unsigned w
, unsigned h
)
178 struct pipe_screen
*screen
= pipe
->screen
;
179 struct pipe_transfer
*src_trans
, *dst_trans
;
182 enum pipe_format src_format
, dst_format
;
184 assert(src
->texture
&& dst
->texture
);
185 if (!src
->texture
|| !dst
->texture
)
188 src_format
= src
->texture
->format
;
189 dst_format
= dst
->texture
->format
;
191 src_trans
= screen
->get_tex_transfer(screen
,
199 dst_trans
= screen
->get_tex_transfer(screen
,
207 assert(util_format_get_blocksize(dst_format
) == util_format_get_blocksize(src_format
));
208 assert(util_format_get_blockwidth(dst_format
) == util_format_get_blockwidth(src_format
));
209 assert(util_format_get_blockheight(dst_format
) == util_format_get_blockheight(src_format
));
211 src_map
= pipe
->screen
->transfer_map(screen
, src_trans
);
212 dst_map
= pipe
->screen
->transfer_map(screen
, dst_trans
);
217 if (src_map
&& dst_map
) {
218 /* If do_flip, invert src_y position and pass negative src stride */
219 util_copy_rect(dst_map
,
225 do_flip
? -(int) src_trans
->stride
: src_trans
->stride
,
227 do_flip
? h
- 1 : 0);
230 pipe
->screen
->transfer_unmap(pipe
->screen
, src_trans
);
231 pipe
->screen
->transfer_unmap(pipe
->screen
, dst_trans
);
233 screen
->tex_transfer_destroy(src_trans
);
234 screen
->tex_transfer_destroy(dst_trans
);
239 #define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
243 * Fallback for pipe->surface_fill() function.
244 * XXX should probably put this in new u_surface.c file...
247 util_surface_fill(struct pipe_context
*pipe
,
248 struct pipe_surface
*dst
,
249 unsigned dstx
, unsigned dsty
,
250 unsigned width
, unsigned height
, unsigned value
)
252 struct pipe_screen
*screen
= pipe
->screen
;
253 struct pipe_transfer
*dst_trans
;
256 assert(dst
->texture
);
259 dst_trans
= screen
->get_tex_transfer(screen
,
265 dstx
, dsty
, width
, height
);
267 dst_map
= pipe
->screen
->transfer_map(screen
, dst_trans
);
272 assert(dst_trans
->stride
> 0);
274 switch (util_format_get_blocksize(dst_trans
->texture
->format
)) {
278 util_fill_rect(dst_map
, dst_trans
->texture
->format
, dst_trans
->stride
,
279 0, 0, width
, height
, value
);
283 /* expand the 4-byte clear value to an 8-byte value */
284 ushort
*row
= (ushort
*) dst_map
;
285 ushort val0
= UBYTE_TO_USHORT((value
>> 0) & 0xff);
286 ushort val1
= UBYTE_TO_USHORT((value
>> 8) & 0xff);
287 ushort val2
= UBYTE_TO_USHORT((value
>> 16) & 0xff);
288 ushort val3
= UBYTE_TO_USHORT((value
>> 24) & 0xff);
290 val0
= (val0
<< 8) | val0
;
291 val1
= (val1
<< 8) | val1
;
292 val2
= (val2
<< 8) | val2
;
293 val3
= (val3
<< 8) | val3
;
294 for (i
= 0; i
< height
; i
++) {
295 for (j
= 0; j
< width
; j
++) {
301 row
+= dst_trans
->stride
/2;
311 pipe
->screen
->transfer_unmap(pipe
->screen
, dst_trans
);
312 screen
->tex_transfer_destroy(dst_trans
);