diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_rect.c')
| -rw-r--r-- | src/gallium/auxiliary/util/u_rect.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_rect.c b/src/gallium/auxiliary/util/u_rect.c new file mode 100644 index 0000000000..b31ab5415f --- /dev/null +++ b/src/gallium/auxiliary/util/u_rect.c @@ -0,0 +1,150 @@ +/************************************************************************** + * + * 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 "pipe/p_defines.h" +#include "pipe/p_format.h" +#include "util/u_rect.h" + + +/** + * Copy 2D rect from one place to another. + * Position and sizes are in pixels. + * src_pitch may be negative to do vertical flip of pixels from source. + */ +void +pipe_copy_rect(ubyte * dst, + const struct pipe_format_block *block, + unsigned dst_stride, + unsigned dst_x, + unsigned dst_y, + unsigned width, + unsigned height, + const ubyte * src, + int src_stride, + unsigned src_x, + int src_y) +{ + unsigned i; + int src_stride_pos = src_stride < 0 ? -src_stride : src_stride; + + assert(block->size > 0); + assert(block->width > 0); + assert(block->height > 0); + assert(src_x >= 0); + assert(src_y >= 0); + assert(dst_x >= 0); + assert(dst_y >= 0); + + dst_x /= block->width; + dst_y /= block->height; + width = (width + block->width - 1)/block->width; + height = (height + block->height - 1)/block->height; + src_x /= block->width; + src_y /= block->height; + + dst += dst_x * block->size; + src += src_x * block->size; + dst += dst_y * dst_stride; + src += src_y * src_stride_pos; + width *= block->size; + + 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 +pipe_fill_rect(ubyte * dst, + const struct pipe_format_block *block, + unsigned dst_stride, + unsigned dst_x, + unsigned dst_y, + unsigned width, + unsigned height, + uint32_t value) +{ + unsigned i, j; + unsigned width_size; + + assert(block->size > 0); + assert(block->width > 0); + assert(block->height > 0); + assert(dst_x >= 0); + assert(dst_y >= 0); + + dst_x /= block->width; + dst_y /= block->height; + width = (width + block->width - 1)/block->width; + height = (height + block->height - 1)/block->height; + + dst += dst_x * block->size; + dst += dst_y * dst_stride; + width_size = width * block->size; + + switch (block->size) { + case 1: + if(dst_stride == width_size) + memset(dst, (ubyte) value, height * width_size); + else { + for (i = 0; i < height; i++) { + memset(dst, (ubyte) value, 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++ = (uint16_t) value; + 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++ = value; + dst += dst_stride; + } + break; + default: + assert(0); + break; + } +} |