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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.
*/
#ifndef U_LINEAR_H
#define U_LINEAR_H
#include "pipe/p_compiler.h"
#include "pipe/p_format.h"
struct u_linear_format_block
{
/** Block size in bytes */
unsigned size;
/** Block width in pixels */
unsigned width;
/** Block height in pixels */
unsigned height;
};
struct pipe_tile_info
{
unsigned size;
unsigned stride;
/* The number of tiles */
unsigned tiles_x;
unsigned tiles_y;
/* size of each tile expressed in blocks */
unsigned cols;
unsigned rows;
/* Describe the tile in pixels */
struct u_linear_format_block tile;
/* Describe each block within the tile */
struct u_linear_format_block block;
};
void pipe_linear_to_tile(size_t src_stride, const void *src_ptr,
struct pipe_tile_info *t, void *dst_ptr);
void pipe_linear_from_tile(struct pipe_tile_info *t, const void *src_ptr,
size_t dst_stride, void *dst_ptr);
/**
* Convenience function to fillout a pipe_tile_info struct.
* @t info to fill out.
* @block block info about pixel layout
* @tile_width the width of the tile in pixels
* @tile_height the height of the tile in pixels
* @tiles_x number of tiles in x axis
* @tiles_y number of tiles in y axis
*/
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);
static inline boolean pipe_linear_check_tile(const struct pipe_tile_info *t)
{
if (t->tile.size != t->block.size * t->cols * t->rows)
return FALSE;
if (t->stride != t->block.size * t->cols * t->tiles_x)
return FALSE;
if (t->size < t->stride * t->rows * t->tiles_y)
return FALSE;
return TRUE;
}
#endif /* U_LINEAR_H */
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