forked from KolibriOS/kolibrios
107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
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/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* Functions for converting tiled data to linear and vice versa.
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*/
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#ifndef U_LINEAR_H
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#define U_LINEAR_H
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#include "pipe/p_compiler.h"
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#include "pipe/p_format.h"
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struct u_linear_format_block
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{
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/** Block size in bytes */
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unsigned size;
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/** Block width in pixels */
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unsigned width;
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/** Block height in pixels */
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unsigned height;
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};
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struct pipe_tile_info
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{
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unsigned size;
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unsigned stride;
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/* The number of tiles */
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unsigned tiles_x;
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unsigned tiles_y;
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/* size of each tile expressed in blocks */
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unsigned cols;
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unsigned rows;
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/* Describe the tile in pixels */
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struct u_linear_format_block tile;
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/* Describe each block within the tile */
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struct u_linear_format_block block;
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};
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void pipe_linear_to_tile(size_t src_stride, const void *src_ptr,
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struct pipe_tile_info *t, void *dst_ptr);
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void pipe_linear_from_tile(struct pipe_tile_info *t, const void *src_ptr,
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size_t dst_stride, void *dst_ptr);
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/**
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* Convenience function to fillout a pipe_tile_info struct.
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* @t info to fill out.
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* @block block info about pixel layout
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* @tile_width the width of the tile in pixels
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* @tile_height the height of the tile in pixels
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* @tiles_x number of tiles in x axis
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* @tiles_y number of tiles in y axis
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*/
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void pipe_linear_fill_info(struct pipe_tile_info *t,
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const struct u_linear_format_block *block,
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unsigned tile_width, unsigned tile_height,
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unsigned tiles_x, unsigned tiles_y);
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static INLINE boolean pipe_linear_check_tile(const struct pipe_tile_info *t)
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{
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if (t->tile.size != t->block.size * t->cols * t->rows)
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return FALSE;
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if (t->stride != t->block.size * t->cols * t->tiles_x)
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return FALSE;
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if (t->size < t->stride * t->rows * t->tiles_y)
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return FALSE;
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return TRUE;
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}
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#endif /* U_LINEAR_H */
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