1 /**************************************************************************
3 * Copyright 2009 VMware, Inc. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
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9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 **************************************************************************/
29 * Surface utility functions.
35 #include "pipe/p_defines.h"
36 #include "pipe/p_screen.h"
37 #include "pipe/p_state.h"
39 #include "util/u_format.h"
40 #include "util/u_inlines.h"
41 #include "util/u_rect.h"
42 #include "util/u_surface.h"
43 #include "util/u_pack_color.h"
47 * Helper to quickly create an RGBA rendering surface of a certain size.
48 * \param textureOut returns the new texture
49 * \param surfaceOut returns the new surface
50 * \return TRUE for success, FALSE if failure
53 util_create_rgba_surface(struct pipe_screen
*screen
,
54 uint width
, uint height
,
56 struct pipe_resource
**textureOut
,
57 struct pipe_surface
**surfaceOut
)
59 static const enum pipe_format rgbaFormats
[] = {
60 PIPE_FORMAT_B8G8R8A8_UNORM
,
61 PIPE_FORMAT_A8R8G8B8_UNORM
,
62 PIPE_FORMAT_A8B8G8R8_UNORM
,
65 const uint target
= PIPE_TEXTURE_2D
;
66 enum pipe_format format
= PIPE_FORMAT_NONE
;
67 struct pipe_resource templ
;
70 /* Choose surface format */
71 for (i
= 0; rgbaFormats
[i
]; i
++) {
72 if (screen
->is_format_supported(screen
, rgbaFormats
[i
],
73 target
, 0, bind
, 0)) {
74 format
= rgbaFormats
[i
];
78 if (format
== PIPE_FORMAT_NONE
)
79 return FALSE
; /* unable to get an rgba format!?! */
82 memset(&templ
, 0, sizeof(templ
));
83 templ
.target
= target
;
84 templ
.format
= format
;
87 templ
.height0
= height
;
91 *textureOut
= screen
->resource_create(screen
, &templ
);
95 /* create surface / view into texture */
96 *surfaceOut
= screen
->get_tex_surface(screen
,
101 pipe_resource_reference(textureOut
, NULL
);
110 * Release the surface and texture from util_create_rgba_surface().
113 util_destroy_rgba_surface(struct pipe_resource
*texture
,
114 struct pipe_surface
*surface
)
116 pipe_surface_reference(&surface
, NULL
);
117 pipe_resource_reference(&texture
, NULL
);
123 * Fallback function for pipe->resource_copy_region().
124 * Note: (X,Y)=(0,0) is always the upper-left corner.
127 util_resource_copy_region(struct pipe_context
*pipe
,
128 struct pipe_resource
*dst
,
129 struct pipe_subresource subdst
,
130 unsigned dst_x
, unsigned dst_y
, unsigned dst_z
,
131 struct pipe_resource
*src
,
132 struct pipe_subresource subsrc
,
133 unsigned src_x
, unsigned src_y
, unsigned src_z
,
134 unsigned w
, unsigned h
)
136 struct pipe_transfer
*src_trans
, *dst_trans
;
139 enum pipe_format src_format
, dst_format
;
145 src_format
= src
->format
;
146 dst_format
= dst
->format
;
148 src_trans
= pipe_get_transfer(pipe
,
156 dst_trans
= pipe_get_transfer(pipe
,
164 assert(util_format_get_blocksize(dst_format
) == util_format_get_blocksize(src_format
));
165 assert(util_format_get_blockwidth(dst_format
) == util_format_get_blockwidth(src_format
));
166 assert(util_format_get_blockheight(dst_format
) == util_format_get_blockheight(src_format
));
168 src_map
= pipe
->transfer_map(pipe
, src_trans
);
169 dst_map
= pipe
->transfer_map(pipe
, dst_trans
);
174 if (src_map
&& dst_map
) {
175 util_copy_rect(dst_map
,
186 pipe
->transfer_unmap(pipe
, src_trans
);
187 pipe
->transfer_unmap(pipe
, dst_trans
);
189 pipe
->transfer_destroy(pipe
, src_trans
);
190 pipe
->transfer_destroy(pipe
, dst_trans
);
195 #define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
199 * Fallback for pipe->clear_render_target() function.
200 * XXX this looks too hackish to be really useful.
201 * cpp > 4 looks like a gross hack at best...
202 * Plus can't use these transfer fallbacks when clearing
203 * multisampled surfaces for instance.
206 util_clear_render_target(struct pipe_context
*pipe
,
207 struct pipe_surface
*dst
,
209 unsigned dstx
, unsigned dsty
,
210 unsigned width
, unsigned height
)
212 struct pipe_transfer
*dst_trans
;
216 assert(dst
->texture
);
220 dst_trans
= pipe_get_transfer(pipe
,
226 dstx
, dsty
, width
, height
);
228 dst_map
= pipe
->transfer_map(pipe
, dst_trans
);
233 assert(dst_trans
->stride
> 0);
235 util_pack_color(rgba
, dst
->texture
->format
, &uc
);
236 util_fill_rect(dst_map
, dst
->texture
->format
,
238 0, 0, width
, height
, &uc
);
241 pipe
->transfer_unmap(pipe
, dst_trans
);
242 pipe
->transfer_destroy(pipe
, dst_trans
);
246 * Fallback for pipe->clear_stencil() function.
247 * sw fallback doesn't look terribly useful here.
248 * Plus can't use these transfer fallbacks when clearing
249 * multisampled surfaces for instance.
252 util_clear_depth_stencil(struct pipe_context
*pipe
,
253 struct pipe_surface
*dst
,
254 unsigned clear_flags
,
257 unsigned dstx
, unsigned dsty
,
258 unsigned width
, unsigned height
)
260 struct pipe_transfer
*dst_trans
;
262 boolean need_rmw
= FALSE
;
264 if ((clear_flags
& PIPE_CLEAR_DEPTHSTENCIL
) &&
265 ((clear_flags
& PIPE_CLEAR_DEPTHSTENCIL
) != PIPE_CLEAR_DEPTHSTENCIL
) &&
266 util_format_is_depth_and_stencil(dst
->format
))
269 assert(dst
->texture
);
272 dst_trans
= pipe_get_transfer(pipe
,
277 (need_rmw
? PIPE_TRANSFER_READ_WRITE
:
278 PIPE_TRANSFER_WRITE
),
279 dstx
, dsty
, width
, height
);
281 dst_map
= pipe
->transfer_map(pipe
, dst_trans
);
286 unsigned dst_stride
= dst_trans
->stride
;
287 unsigned zstencil
= util_pack_z_stencil(dst
->texture
->format
, depth
, stencil
);
289 assert(dst_trans
->stride
> 0);
291 switch (util_format_get_blocksize(dst
->format
)) {
293 assert(dst
->format
== PIPE_FORMAT_S8_USCALED
);
294 if(dst_stride
== width
)
295 memset(dst_map
, (ubyte
) zstencil
, height
* width
);
297 for (i
= 0; i
< height
; i
++) {
298 memset(dst_map
, (ubyte
) zstencil
, width
);
299 dst_map
+= dst_stride
;
304 assert(dst
->format
== PIPE_FORMAT_Z16_UNORM
);
305 for (i
= 0; i
< height
; i
++) {
306 uint16_t *row
= (uint16_t *)dst_map
;
307 for (j
= 0; j
< width
; j
++)
308 *row
++ = (uint16_t) zstencil
;
309 dst_map
+= dst_stride
;
314 for (i
= 0; i
< height
; i
++) {
315 uint32_t *row
= (uint32_t *)dst_map
;
316 for (j
= 0; j
< width
; j
++)
318 dst_map
+= dst_stride
;
323 if (dst
->format
== PIPE_FORMAT_Z24_UNORM_S8_USCALED
)
324 dst_mask
= 0xffffff00;
326 assert(dst
->format
== PIPE_FORMAT_S8_USCALED_Z24_UNORM
);
329 if (clear_flags
& PIPE_CLEAR_DEPTH
)
330 dst_mask
= ~dst_mask
;
331 for (i
= 0; i
< height
; i
++) {
332 uint32_t *row
= (uint32_t *)dst_map
;
333 for (j
= 0; j
< width
; j
++) {
334 uint32_t tmp
= *row
& dst_mask
;
335 *row
++ = tmp
| (zstencil
& ~dst_mask
);
337 dst_map
+= dst_stride
;
348 pipe
->transfer_unmap(pipe
, dst_trans
);
349 pipe
->transfer_destroy(pipe
, dst_trans
);