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/**********************************************************
* Copyright 2008-2009 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, sublicense, 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 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
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* 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 "svga_cmd.h"
#include "pipe/p_defines.h"
#include "util/u_pack_color.h"
#include "svga_context.h"
#include "svga_state.h"
static enum pipe_error
try_clear(struct svga_context *svga,
unsigned buffers,
const float *rgba,
double depth,
unsigned stencil)
{
int ret = PIPE_OK;
SVGA3dRect rect = { 0, 0, 0, 0 };
boolean restore_viewport = FALSE;
SVGA3dClearFlag flags = 0;
struct pipe_framebuffer_state *fb = &svga->curr.framebuffer;
unsigned color = 0;
ret = svga_update_state(svga, SVGA_STATE_HW_CLEAR);
if (ret)
return ret;
if ((buffers & PIPE_CLEAR_COLOR) && fb->cbufs[0]) {
flags |= SVGA3D_CLEAR_COLOR;
util_pack_color(rgba, PIPE_FORMAT_A8R8G8B8_UNORM, &color);
rect.w = fb->cbufs[0]->width;
rect.h = fb->cbufs[0]->height;
}
if ((buffers & PIPE_CLEAR_DEPTHSTENCIL) && fb->zsbuf) {
flags |= SVGA3D_CLEAR_DEPTH;
if (svga->curr.framebuffer.zsbuf->format == PIPE_FORMAT_Z24S8_UNORM)
flags |= SVGA3D_CLEAR_STENCIL;
rect.w = MAX2(rect.w, fb->zsbuf->width);
rect.h = MAX2(rect.h, fb->zsbuf->height);
}
if (memcmp(&rect, &svga->state.hw_clear.viewport, sizeof(rect)) != 0) {
restore_viewport = TRUE;
ret = SVGA3D_SetViewport(svga->swc, &rect);
if (ret)
return ret;
}
ret = SVGA3D_ClearRect(svga->swc, flags, color, depth, stencil,
rect.x, rect.y, rect.w, rect.h);
if (ret != PIPE_OK)
return ret;
if (restore_viewport) {
memcpy(&rect, &svga->state.hw_clear.viewport, sizeof rect);
ret = SVGA3D_SetViewport(svga->swc, &rect);
}
return ret;
}
/**
* Clear the given surface to the specified value.
* No masking, no scissor (clear entire buffer).
*/
void
svga_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
double depth, unsigned stencil)
{
struct svga_context *svga = svga_context( pipe );
int ret;
ret = try_clear( svga, buffers, rgba, depth, stencil );
if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
/* Flush command buffer and retry:
*/
svga_context_flush( svga, NULL );
ret = try_clear( svga, buffers, rgba, depth, stencil );
}
/*
* Mark target surfaces as dirty
* TODO Mark only cleared surfaces.
*/
svga_mark_surfaces_dirty(svga);
assert (ret == PIPE_OK);
}
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