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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.
*
**************************************************************************/
/* Author:
* Brian Paul
*/
#include "pipe/p_defines.h"
#include "sp_clear.h"
#include "sp_context.h"
#include "sp_surface.h"
#include "sp_state.h"
#include "sp_tile_cache.h"
/**
* Clear the given surface to the specified value.
* No masking, no scissor (clear entire buffer).
*/
void
softpipe_clear(struct pipe_context *pipe, struct pipe_surface *ps,
unsigned clearValue)
{
struct softpipe_context *softpipe = softpipe_context(pipe);
softpipe_update_derived(softpipe); /* not needed?? */
if (ps == sp_tile_cache_get_surface(softpipe->zbuf_cache)) {
float clear[4];
clear[0] = 1.0; /* XXX hack */
sp_tile_cache_clear(softpipe->zbuf_cache, clear);
}
else if (ps == sp_tile_cache_get_surface(softpipe->cbuf_cache[0])) {
float clear[4];
/* XXX it sure would be nice if the clear color was passed to
* this function as float[4]....
*/
uint r, g, b, a;
switch (ps->format) {
case PIPE_FORMAT_U_R8_G8_B8_A8:
r = (clearValue >> 24) & 0xff;
g = (clearValue >> 16) & 0xff;
g = (clearValue >> 8) & 0xff;
a = (clearValue ) & 0xff;
break;
case PIPE_FORMAT_U_A8_R8_G8_B8:
r = (clearValue >> 16) & 0xff;
g = (clearValue >> 8) & 0xff;
b = (clearValue ) & 0xff;
a = (clearValue >> 24) & 0xff;
break;
case PIPE_FORMAT_U_B8_G8_R8_A8:
r = (clearValue >> 8) & 0xff;
g = (clearValue >> 16) & 0xff;
b = (clearValue >> 24) & 0xff;
a = (clearValue ) & 0xff;
break;
default:
assert(0);
}
clear[0] = r / 255.0;
clear[1] = g / 255.0;
clear[2] = b / 255.0;
clear[3] = a / 255.0;
sp_tile_cache_clear(softpipe->cbuf_cache[0], clear);
}
pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
#if 0
sp_clear_tile_cache(ps, clearValue);
#endif
}
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