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/**************************************************************************
*
* Copyright 2009 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.
*
**************************************************************************/
/**
* Functions for converting tiled data to linear and vice versa.
*/
#include "util/u_debug.h"
#include "u_linear.h"
void
pipe_linear_to_tile(size_t src_stride, const void *src_ptr,
struct pipe_tile_info *t, void *dst_ptr)
{
unsigned x, y, z;
char *ptr;
size_t bytes = t->cols * t->block.size;
char *dst_ptr2 = (char *) dst_ptr;
assert(pipe_linear_check_tile(t));
/* lets write linearly to the tiled buffer */
for (y = 0; y < t->tiles_y; y++) {
for (x = 0; x < t->tiles_x; x++) {
/* this inner loop could be replace with SSE magic */
ptr = (char*)src_ptr + src_stride * t->rows * y + bytes * x;
for (z = 0; z < t->rows; z++) {
memcpy(dst_ptr2, ptr, bytes);
dst_ptr2 += bytes;
ptr += src_stride;
}
}
}
}
void pipe_linear_from_tile(struct pipe_tile_info *t, const void *src_ptr,
size_t dst_stride, void *dst_ptr)
{
unsigned x, y, z;
char *ptr;
size_t bytes = t->cols * t->block.size;
const char *src_ptr2 = (const char *) src_ptr;
/* lets read linearly from the tiled buffer */
for (y = 0; y < t->tiles_y; y++) {
for (x = 0; x < t->tiles_x; x++) {
/* this inner loop could be replace with SSE magic */
ptr = (char*)dst_ptr + dst_stride * t->rows * y + bytes * x;
for (z = 0; z < t->rows; z++) {
memcpy(ptr, src_ptr2, bytes);
src_ptr2 += bytes;
ptr += dst_stride;
}
}
}
}
void
pipe_linear_fill_info(struct pipe_tile_info *t,
const struct u_linear_format_block *block,
unsigned tile_width, unsigned tile_height,
unsigned tiles_x, unsigned tiles_y)
{
t->block = *block;
t->tile.width = tile_width;
t->tile.height = tile_height;
t->cols = t->tile.width / t->block.width;
t->rows = t->tile.height / t->block.height;
t->tile.size = t->cols * t->rows * t->block.size;
t->tiles_x = tiles_x;
t->tiles_y = tiles_y;
t->stride = t->cols * t->tiles_x * t->block.size;
t->size = t->tiles_x * t->tiles_y * t->tile.size;
}
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