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
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11 * permit persons to whom the Software is furnished to do so, subject to
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14 * The above copyright notice and this permission notice (including the
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18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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26 **************************************************************************/
29 * Rectangle-related helper functions.
33 #include "util/u_format.h"
34 #include "util/u_rect.h"
35 #include "util/u_pack_color.h"
39 * Copy 2D rect from one place to another.
40 * Position and sizes are in pixels.
41 * src_stride may be negative to do vertical flip of pixels from source.
44 util_copy_rect(ubyte * dst,
45 enum pipe_format format,
57 int src_stride_pos = src_stride < 0 ? -src_stride : src_stride;
58 int blocksize = util_format_get_blocksize(format);
59 int blockwidth = util_format_get_blockwidth(format);
60 int blockheight = util_format_get_blockheight(format);
62 assert(blocksize > 0);
63 assert(blockwidth > 0);
64 assert(blockheight > 0);
68 width = (width + blockwidth - 1)/blockwidth;
69 height = (height + blockheight - 1)/blockheight;
73 dst += dst_x * blocksize;
74 src += src_x * blocksize;
75 dst += dst_y * dst_stride;
76 src += src_y * src_stride_pos;
79 if (width == dst_stride && width == src_stride)
80 memcpy(dst, src, height * width);
82 for (i = 0; i < height; i++) {
83 memcpy(dst, src, width);
91 util_fill_rect(ubyte * dst,
92 enum pipe_format format,
100 const struct util_format_description *desc = util_format_description(format);
103 int blocksize = desc->block.bits / 8;
104 int blockwidth = desc->block.width;
105 int blockheight = desc->block.height;
107 assert(blocksize > 0);
108 assert(blockwidth > 0);
109 assert(blockheight > 0);
112 dst_y /= blockheight;
113 width = (width + blockwidth - 1)/blockwidth;
114 height = (height + blockheight - 1)/blockheight;
116 dst += dst_x * blocksize;
117 dst += dst_y * dst_stride;
118 width_size = width * blocksize;
122 if(dst_stride == width_size)
123 memset(dst, uc->ub, height * width_size);
125 for (i = 0; i < height; i++) {
126 memset(dst, uc->ub, width_size);
132 for (i = 0; i < height; i++) {
133 uint16_t *row = (uint16_t *)dst;
134 for (j = 0; j < width; j++)
140 for (i = 0; i < height; i++) {
141 uint32_t *row = (uint32_t *)dst;
142 for (j = 0; j < width; j++)
152 for (i = 0; i < height; i++) {
154 for (j = 0; j < width; j++) {
155 memcpy(row, uc, blocksize);