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Diffstat (limited to 'src/gallium/auxiliary/util/u_format.c')
-rw-r--r-- | src/gallium/auxiliary/util/u_format.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_format.c b/src/gallium/auxiliary/util/u_format.c new file mode 100644 index 0000000000..7f16cf7d01 --- /dev/null +++ b/src/gallium/auxiliary/util/u_format.c @@ -0,0 +1,118 @@ +/************************************************************************** + * + * Copyright 2010 VMware, Inc. + * 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 VMWARE 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. + * + **************************************************************************/ + +/** + * @file + * Pixel format accessor functions. + * + * @author Jose Fonseca <jfonseca@vmware.com> + */ + +#include "u_format.h" + + +void +util_format_read_4f(enum pipe_format format, + float *dst, unsigned dst_stride, + const void *src, unsigned src_stride, + unsigned x, unsigned y, unsigned w, unsigned h) +{ + const struct util_format_description *format_desc; + const uint8_t *src_row; + float *dst_row; + + format_desc = util_format_description(format); + + assert(x % format_desc->block.width == 0); + assert(y % format_desc->block.height == 0); + + src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8); + dst_row = dst; + + format_desc->unpack_float(dst_row, dst_stride, src_row, src_stride, w, h); +} + + +void +util_format_write_4f(enum pipe_format format, + const float *src, unsigned src_stride, + void *dst, unsigned dst_stride, + unsigned x, unsigned y, unsigned w, unsigned h) +{ + const struct util_format_description *format_desc; + uint8_t *dst_row; + const float *src_row; + + format_desc = util_format_description(format); + + assert(x % format_desc->block.width == 0); + assert(y % format_desc->block.height == 0); + + dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8); + src_row = src; + + format_desc->pack_float(dst_row, dst_stride, src_row, src_stride, w, h); +} + + +void +util_format_read_4ub(enum pipe_format format, uint8_t *dst, unsigned dst_stride, const void *src, unsigned src_stride, unsigned x, unsigned y, unsigned w, unsigned h) +{ + const struct util_format_description *format_desc; + const uint8_t *src_row; + uint8_t *dst_row; + + format_desc = util_format_description(format); + + assert(x % format_desc->block.width == 0); + assert(y % format_desc->block.height == 0); + + src_row = (const uint8_t *)src + y*src_stride + x*(format_desc->block.bits/8); + dst_row = dst; + + format_desc->unpack_8unorm(dst_row, dst_stride, src_row, src_stride, w, h); +} + + +void +util_format_write_4ub(enum pipe_format format, const uint8_t *src, unsigned src_stride, void *dst, unsigned dst_stride, unsigned x, unsigned y, unsigned w, unsigned h) +{ + const struct util_format_description *format_desc; + uint8_t *dst_row; + const uint8_t *src_row; + + format_desc = util_format_description(format); + + assert(x % format_desc->block.width == 0); + assert(y % format_desc->block.height == 0); + + dst_row = (uint8_t *)dst + y*dst_stride + x*(format_desc->block.bits/8); + src_row = src; + + format_desc->pack_8unorm(dst_row, dst_stride, src_row, src_stride, w, h); +} + |