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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
#include "pipe/p_defines.h"
#include "pipe/p_util.h"
#include "pipe/p_inlines.h"
#include "pipe/p_winsys.h"
#include "pipe/util/p_tile.h"
#include "sp_context.h"
#include "sp_surface.h"
/* Upload data to a rectangular sub-region. Lots of choices how to do this:
*
* - memcpy by span to current destination
* - upload data as new buffer and blit
*
* Currently always memcpy.
*/
static void
sp_surface_data(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned dstx, unsigned dsty,
const void *src, unsigned src_pitch,
unsigned srcx, unsigned srcy, unsigned width, unsigned height)
{
pipe_copy_rect(pipe_surface_map(dst),
dst->cpp,
dst->pitch,
dstx, dsty, width, height, src, src_pitch, srcx, srcy);
pipe_surface_unmap(dst);
}
/* Assumes all values are within bounds -- no checking at this level -
* do it higher up if required.
*/
static void
sp_surface_copy(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned dstx, unsigned dsty,
struct pipe_surface *src,
unsigned srcx, unsigned srcy, unsigned width, unsigned height)
{
assert( dst->cpp == src->cpp );
pipe_copy_rect(pipe_surface_map(dst),
dst->cpp,
dst->pitch,
dstx, dsty,
width, height,
pipe_surface_map(src),
src->pitch,
srcx, srcy);
pipe_surface_unmap(src);
pipe_surface_unmap(dst);
}
static void *
get_pointer(struct pipe_surface *dst, void *dst_map, unsigned x, unsigned y)
{
return (char *)dst_map + (y * dst->pitch + x) * dst->cpp;
}
#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
/**
* Fill a rectangular sub-region. Need better logic about when to
* push buffers into AGP - will currently do so whenever possible.
*/
static void
sp_surface_fill(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height, unsigned value)
{
unsigned i, j;
void *dst_map = pipe_surface_map(dst);
assert(dst->pitch > 0);
assert(width <= dst->pitch);
switch (dst->cpp) {
case 1:
{
ubyte *row = get_pointer(dst, dst_map, dstx, dsty);
for (i = 0; i < height; i++) {
memset(row, value, width);
row += dst->pitch;
}
}
break;
case 2:
{
ushort *row = get_pointer(dst, dst_map, dstx, dsty);
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++)
row[j] = (ushort) value;
row += dst->pitch;
}
}
break;
case 4:
{
unsigned *row = get_pointer(dst, dst_map, dstx, dsty);
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++)
row[j] = value;
row += dst->pitch;
}
}
break;
case 8:
{
/* expand the 4-byte clear value to an 8-byte value */
ushort *row = (ushort *) get_pointer(dst, dst_map, dstx, dsty);
ushort val0 = UBYTE_TO_USHORT((value >> 0) & 0xff);
ushort val1 = UBYTE_TO_USHORT((value >> 8) & 0xff);
ushort val2 = UBYTE_TO_USHORT((value >> 16) & 0xff);
ushort val3 = UBYTE_TO_USHORT((value >> 24) & 0xff);
val0 = (val0 << 8) | val0;
val1 = (val1 << 8) | val1;
val2 = (val2 << 8) | val2;
val3 = (val3 << 8) | val3;
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
row[j*4+0] = val0;
row[j*4+1] = val1;
row[j*4+2] = val2;
row[j*4+3] = val3;
}
row += dst->pitch * 4;
}
}
break;
default:
assert(0);
break;
}
pipe_surface_unmap( dst );
}
void
sp_init_surface_functions(struct softpipe_context *sp)
{
sp->pipe.get_tile = pipe_get_tile_raw;
sp->pipe.put_tile = pipe_put_tile_raw;
sp->pipe.surface_data = sp_surface_data;
sp->pipe.surface_copy = sp_surface_copy;
sp->pipe.surface_fill = sp_surface_fill;
}
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