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/*
* Copyright 2008 Ben Skeggs
*
* 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 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_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_state.h"
#include "nv50_context.h"
void
nv50_clear(struct pipe_context *pipe, struct pipe_surface *ps,
unsigned clearValue)
{
struct nv50_context *nv50 = nv50_context(pipe);
struct nouveau_channel *chan = nv50->screen->nvws->channel;
struct nouveau_grobj *tesla = nv50->screen->tesla;
struct pipe_framebuffer_state fb, s_fb = nv50->framebuffer;
struct pipe_scissor_state sc, s_sc = nv50->scissor;
unsigned dirty = nv50->dirty;
nv50->dirty = 0;
if (ps->format == PIPE_FORMAT_Z24S8_UNORM ||
ps->format == PIPE_FORMAT_Z16_UNORM) {
fb.nr_cbufs = 0;
fb.zsbuf = ps;
} else {
fb.nr_cbufs = 1;
fb.cbufs[0] = ps;
fb.zsbuf = NULL;
}
fb.width = ps->width;
fb.height = ps->height;
pipe->set_framebuffer_state(pipe, &fb);
sc.minx = sc.miny = 0;
sc.maxx = fb.width;
sc.maxy = fb.height;
pipe->set_scissor_state(pipe, &sc);
nv50_state_validate(nv50);
switch (ps->format) {
case PIPE_FORMAT_A8R8G8B8_UNORM:
BEGIN_RING(chan, tesla, 0x0d80, 4);
OUT_RINGf (chan, ubyte_to_float((clearValue >> 16) & 0xff));
OUT_RINGf (chan, ubyte_to_float((clearValue >> 8) & 0xff));
OUT_RINGf (chan, ubyte_to_float((clearValue >> 0) & 0xff));
OUT_RINGf (chan, ubyte_to_float((clearValue >> 24) & 0xff));
BEGIN_RING(chan, tesla, 0x19d0, 1);
OUT_RING (chan, 0x3c);
break;
case PIPE_FORMAT_Z24S8_UNORM:
BEGIN_RING(chan, tesla, 0x0d90, 1);
OUT_RINGf (chan, (float)(clearValue >> 8) * (1.0 / 16777215.0));
BEGIN_RING(chan, tesla, 0x0da0, 1);
OUT_RING (chan, clearValue & 0xff);
BEGIN_RING(chan, tesla, 0x19d0, 1);
OUT_RING (chan, 0x03);
break;
default:
pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height,
clearValue);
break;
}
pipe->set_framebuffer_state(pipe, &s_fb);
pipe->set_scissor_state(pipe, &s_sc);
nv50->dirty |= dirty;
ps->status = PIPE_SURFACE_STATUS_CLEAR;
}
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