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/*
* Copyright (c) 2012-2015 Etnaviv Project
*
* 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Wladimir J. van der Laan <laanwj@gmail.com>
*/
#include "etnaviv_tiling.h"
#include <stdint.h>
#include <stdio.h>
#define TEX_TILE_WIDTH (4)
#define TEX_TILE_HEIGHT (4)
#define TEX_TILE_WORDS (TEX_TILE_WIDTH * TEX_TILE_HEIGHT)
#define DO_TILE(type) \
src_stride /= sizeof(type); \
dst_stride = (dst_stride * TEX_TILE_HEIGHT) / sizeof(type); \
for (unsigned srcy = 0; srcy < height; ++srcy) { \
unsigned dsty = basey + srcy; \
unsigned ty = (dsty / TEX_TILE_HEIGHT) * dst_stride + \
(dsty % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH; \
for (unsigned srcx = 0; srcx < width; ++srcx) { \
unsigned dstx = basex + srcx; \
((type *)dest)[ty + (dstx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \
(dstx % TEX_TILE_WIDTH)] = \
((type *)src)[srcy * src_stride + srcx]; \
} \
}
#define DO_UNTILE(type) \
src_stride = (src_stride * TEX_TILE_HEIGHT) / sizeof(type); \
dst_stride /= sizeof(type); \
for (unsigned dsty = 0; dsty < height; ++dsty) { \
unsigned srcy = basey + dsty; \
unsigned sy = (srcy / TEX_TILE_HEIGHT) * src_stride + \
(srcy % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH; \
for (unsigned dstx = 0; dstx < width; ++dstx) { \
unsigned srcx = basex + dstx; \
((type *)dest)[dsty * dst_stride + dstx] = \
((type *)src)[sy + (srcx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \
(srcx % TEX_TILE_WIDTH)]; \
} \
}
void
etna_texture_tile(void *dest, void *src, unsigned basex, unsigned basey,
unsigned dst_stride, unsigned width, unsigned height,
unsigned src_stride, unsigned elmtsize)
{
if (elmtsize == 4) {
DO_TILE(uint32_t)
} else if (elmtsize == 2) {
DO_TILE(uint16_t)
} else if (elmtsize == 1) {
DO_TILE(uint8_t)
} else {
printf("etna_texture_tile: unhandled element size %i\n", elmtsize);
}
}
void
etna_texture_untile(void *dest, void *src, unsigned basex, unsigned basey,
unsigned src_stride, unsigned width, unsigned height,
unsigned dst_stride, unsigned elmtsize)
{
if (elmtsize == 4) {
DO_UNTILE(uint32_t);
} else if (elmtsize == 2) {
DO_UNTILE(uint16_t);
} else if (elmtsize == 1) {
DO_UNTILE(uint8_t);
} else {
printf("etna_texture_tile: unhandled element size %i\n", elmtsize);
}
}
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