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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, unsigned buffers,
const float *rgba, double depth, unsigned stencil)
{
struct nv50_context *nv50 = nv50_context(pipe);
struct nouveau_channel *chan = nv50->screen->base.channel;
struct nouveau_grobj *tesla = nv50->screen->tesla;
struct pipe_framebuffer_state *fb = &nv50->framebuffer;
unsigned mode = 0, i;
const unsigned dirty = nv50->dirty;
/* don't need NEW_BLEND, NV50TCL_COLOR_MASK doesn't affect CLEAR_BUFFERS */
nv50->dirty &= NV50_NEW_FRAMEBUFFER | NV50_NEW_SCISSOR;
if (!nv50_state_validate(nv50, 64))
return;
if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
BEGIN_RING(chan, tesla, NV50TCL_CLEAR_COLOR(0), 4);
OUT_RING (chan, fui(rgba[0]));
OUT_RING (chan, fui(rgba[1]));
OUT_RING (chan, fui(rgba[2]));
OUT_RING (chan, fui(rgba[3]));
mode |= 0x3c;
}
if (buffers & PIPE_CLEAR_DEPTH) {
BEGIN_RING(chan, tesla, NV50TCL_CLEAR_DEPTH, 1);
OUT_RING (chan, fui(depth));
mode |= NV50TCL_CLEAR_BUFFERS_Z;
}
if (buffers & PIPE_CLEAR_STENCIL) {
BEGIN_RING(chan, tesla, NV50TCL_CLEAR_STENCIL, 1);
OUT_RING (chan, stencil & 0xff);
mode |= NV50TCL_CLEAR_BUFFERS_S;
}
BEGIN_RING(chan, tesla, NV50TCL_CLEAR_BUFFERS, 1);
OUT_RING (chan, mode);
for (i = 1; i < fb->nr_cbufs; i++) {
BEGIN_RING(chan, tesla, NV50TCL_CLEAR_BUFFERS, 1);
OUT_RING (chan, (i << 6) | 0x3c);
}
nv50->dirty = dirty;
}
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