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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* Rectangle-related helper functions.
*/
#include "util/u_format.h"
#include "util/u_rect.h"
#include "util/u_pack_color.h"
/**
* Copy 2D rect from one place to another.
* Position and sizes are in pixels.
* src_stride may be negative to do vertical flip of pixels from source.
*/
void
util_copy_rect(ubyte * dst,
enum pipe_format format,
unsigned dst_stride,
unsigned dst_x,
unsigned dst_y,
unsigned width,
unsigned height,
const ubyte * src,
int src_stride,
unsigned src_x,
unsigned src_y)
{
unsigned i;
int src_stride_pos = src_stride < 0 ? -src_stride : src_stride;
int blocksize = util_format_get_blocksize(format);
int blockwidth = util_format_get_blockwidth(format);
int blockheight = util_format_get_blockheight(format);
assert(blocksize > 0);
assert(blockwidth > 0);
assert(blockheight > 0);
dst_x /= blockwidth;
dst_y /= blockheight;
width = (width + blockwidth - 1)/blockwidth;
height = (height + blockheight - 1)/blockheight;
src_x /= blockwidth;
src_y /= blockheight;
dst += dst_x * blocksize;
src += src_x * blocksize;
dst += dst_y * dst_stride;
src += src_y * src_stride_pos;
width *= blocksize;
if (width == dst_stride && width == src_stride)
memcpy(dst, src, height * width);
else {
for (i = 0; i < height; i++) {
memcpy(dst, src, width);
dst += dst_stride;
src += src_stride;
}
}
}
void
util_fill_rect(ubyte * dst,
enum pipe_format format,
unsigned dst_stride,
unsigned dst_x,
unsigned dst_y,
unsigned width,
unsigned height,
union util_color *uc)
{
const struct util_format_description *desc = util_format_description(format);
unsigned i, j;
unsigned width_size;
int blocksize = desc->block.bits / 8;
int blockwidth = desc->block.width;
int blockheight = desc->block.height;
assert(blocksize > 0);
assert(blockwidth > 0);
assert(blockheight > 0);
dst_x /= blockwidth;
dst_y /= blockheight;
width = (width + blockwidth - 1)/blockwidth;
height = (height + blockheight - 1)/blockheight;
dst += dst_x * blocksize;
dst += dst_y * dst_stride;
width_size = width * blocksize;
switch (blocksize) {
case 1:
if(dst_stride == width_size)
memset(dst, uc->ub, height * width_size);
else {
for (i = 0; i < height; i++) {
memset(dst, uc->ub, width_size);
dst += dst_stride;
}
}
break;
case 2:
for (i = 0; i < height; i++) {
uint16_t *row = (uint16_t *)dst;
for (j = 0; j < width; j++)
*row++ = uc->us;
dst += dst_stride;
}
break;
case 4:
for (i = 0; i < height; i++) {
uint32_t *row = (uint32_t *)dst;
for (j = 0; j < width; j++)
*row++ = uc->ui;
dst += dst_stride;
}
break;
default:
for (i = 0; i < height; i++) {
ubyte *row = dst;
for (j = 0; j < width; j++) {
memcpy(row, uc, blocksize);
row += blocksize;
}
dst += dst_stride;
}
break;
}
}
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