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);
71 width = (width + blockwidth - 1)/blockwidth;
72 height = (height + blockheight - 1)/blockheight;
76 dst += dst_x * blocksize;
77 src += src_x * blocksize;
78 dst += dst_y * dst_stride;
79 src += src_y * src_stride_pos;
82 if (width == dst_stride && width == src_stride)
83 memcpy(dst, src, height * width);
85 for (i = 0; i < height; i++) {
86 memcpy(dst, src, width);
94 util_fill_rect(ubyte * dst,
95 enum pipe_format format,
105 int blocksize = util_format_get_blocksize(format);
106 int blockwidth = util_format_get_blockwidth(format);
107 int blockheight = util_format_get_blockheight(format);
109 assert(blocksize > 0);
110 assert(blockwidth > 0);
111 assert(blockheight > 0);
114 dst_y /= blockheight;
115 width = (width + blockwidth - 1)/blockwidth;
116 height = (height + blockheight - 1)/blockheight;
118 dst += dst_x * blocksize;
119 dst += dst_y * dst_stride;
120 width_size = width * blocksize;
124 if(dst_stride == width_size)
125 memset(dst, (ubyte) value, height * width_size);
127 for (i = 0; i < height; i++) {
128 memset(dst, (ubyte) value, width_size);
134 for (i = 0; i < height; i++) {
135 uint16_t *row = (uint16_t *)dst;
136 for (j = 0; j < width; j++)
137 *row++ = (uint16_t) value;
142 for (i = 0; i < height; i++) {
143 uint32_t *row = (uint32_t *)dst;
144 for (j = 0; j < width; j++)
158 * Fallback function for pipe->surface_copy().
159 * Note: (X,Y)=(0,0) is always the upper-left corner.
160 * if do_flip, flip the image vertically on its way from src rect to dst rect.
161 * XXX should probably put this in new u_surface.c file...
164 util_surface_copy(struct pipe_context *pipe,
166 struct pipe_surface *dst,
167 unsigned dst_x, unsigned dst_y,
168 struct pipe_surface *src,
169 unsigned src_x, unsigned src_y,
170 unsigned w, unsigned h)
172 struct pipe_transfer *src_trans, *dst_trans;
175 enum pipe_format src_format, dst_format;
177 assert(src->texture && dst->texture);
178 if (!src->texture || !dst->texture)
181 src_format = src->texture->format;
182 dst_format = dst->texture->format;
184 src_trans = pipe->get_tex_transfer(pipe,
192 dst_trans = pipe->get_tex_transfer(pipe,
200 assert(util_format_get_blocksize(dst_format) == util_format_get_blocksize(src_format));
201 assert(util_format_get_blockwidth(dst_format) == util_format_get_blockwidth(src_format));
202 assert(util_format_get_blockheight(dst_format) == util_format_get_blockheight(src_format));
204 src_map = pipe->transfer_map(pipe, src_trans);
205 dst_map = pipe->transfer_map(pipe, dst_trans);
210 if (src_map && dst_map) {
211 /* If do_flip, invert src_y position and pass negative src stride */
212 util_copy_rect(dst_map,
218 do_flip ? -(int) src_trans->stride : src_trans->stride,
220 do_flip ? h - 1 : 0);
223 pipe->transfer_unmap(pipe, src_trans);
224 pipe->transfer_unmap(pipe, dst_trans);
226 pipe->tex_transfer_destroy(pipe, src_trans);
227 pipe->tex_transfer_destroy(pipe, dst_trans);
232 #define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
236 * Fallback for pipe->surface_fill() function.
237 * XXX should probably put this in new u_surface.c file...
240 util_surface_fill(struct pipe_context *pipe,
241 struct pipe_surface *dst,
242 unsigned dstx, unsigned dsty,
243 unsigned width, unsigned height, unsigned value)
245 struct pipe_transfer *dst_trans;
248 assert(dst->texture);
251 dst_trans = pipe->get_tex_transfer(pipe,
257 dstx, dsty, width, height);
259 dst_map = pipe->transfer_map(pipe, dst_trans);
264 assert(dst_trans->stride > 0);
266 switch (util_format_get_blocksize(dst_trans->texture->format)) {
270 util_fill_rect(dst_map, dst_trans->texture->format, dst_trans->stride,
271 0, 0, width, height, value);
275 /* expand the 4-byte clear value to an 8-byte value */
276 ushort *row = (ushort *) dst_map;
277 ushort val0 = UBYTE_TO_USHORT((value >> 0) & 0xff);
278 ushort val1 = UBYTE_TO_USHORT((value >> 8) & 0xff);
279 ushort val2 = UBYTE_TO_USHORT((value >> 16) & 0xff);
280 ushort val3 = UBYTE_TO_USHORT((value >> 24) & 0xff);
282 val0 = (val0 << 8) | val0;
283 val1 = (val1 << 8) | val1;
284 val2 = (val2 << 8) | val2;
285 val3 = (val3 << 8) | val3;
286 for (i = 0; i < height; i++) {
287 for (j = 0; j < width; j++) {
293 row += dst_trans->stride/2;
303 pipe->transfer_unmap(pipe, dst_trans);
304 pipe->tex_transfer_destroy(pipe, dst_trans);