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/****************************************************************************
* Copyright (C) 2015 Intel Corporation. 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 (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 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 "swr_context.h"
#include "swr_query.h"
static void
swr_clear(struct pipe_context *pipe,
unsigned buffers,
const union pipe_color_union *color,
double depth,
unsigned stencil)
{
struct swr_context *ctx = swr_context(pipe);
struct pipe_framebuffer_state *fb = &ctx->framebuffer;
UINT clearMask = 0;
unsigned layers = 0;
if (!swr_check_render_cond(pipe))
return;
swr_update_derived(pipe);
if (buffers & PIPE_CLEAR_COLOR && fb->nr_cbufs) {
for (unsigned i = 0; i < fb->nr_cbufs; ++i)
if (fb->cbufs[i] && (buffers & (PIPE_CLEAR_COLOR0 << i))) {
clearMask |= (SWR_ATTACHMENT_COLOR0_BIT << i);
layers = std::max(layers, fb->cbufs[i]->u.tex.last_layer -
fb->cbufs[i]->u.tex.first_layer + 1u);
}
}
if (buffers & PIPE_CLEAR_DEPTH && fb->zsbuf) {
clearMask |= SWR_ATTACHMENT_DEPTH_BIT;
layers = std::max(layers, fb->zsbuf->u.tex.last_layer -
fb->zsbuf->u.tex.first_layer + 1u);
}
if (buffers & PIPE_CLEAR_STENCIL && fb->zsbuf) {
clearMask |= SWR_ATTACHMENT_STENCIL_BIT;
layers = std::max(layers, fb->zsbuf->u.tex.last_layer -
fb->zsbuf->u.tex.first_layer + 1u);
}
#if 0 // XXX HACK, override clear color alpha. On ubuntu, clears are
// transparent.
((union pipe_color_union *)color)->f[3] = 1.0; /* cast off your const'd-ness */
#endif
/*
* Always clear full surface. When GL_SCISSOR_TEST is enabled
* glClear is handled by state tracker and there is no need to do this here
*/
SWR_RECT clear_rect = {0, 0, (int32_t)fb->width, (int32_t)fb->height};
for (unsigned i = 0; i < layers; ++i) {
swr_update_draw_context(ctx);
ctx->api.pfnSwrClearRenderTarget(ctx->swrContext, clearMask, i,
color->f, depth, stencil,
clear_rect);
// Mask out the attachments that are out of layers.
if (fb->zsbuf &&
(fb->zsbuf->u.tex.last_layer <= fb->zsbuf->u.tex.first_layer + i))
clearMask &= ~(SWR_ATTACHMENT_DEPTH_BIT | SWR_ATTACHMENT_STENCIL_BIT);
for (unsigned c = 0; c < fb->nr_cbufs; ++c) {
const struct pipe_surface *sf = fb->cbufs[c];
if (sf && (sf->u.tex.last_layer <= sf->u.tex.first_layer + i))
clearMask &= ~(SWR_ATTACHMENT_COLOR0_BIT << c);
}
}
}
void
swr_clear_init(struct pipe_context *pipe)
{
pipe->clear = swr_clear;
}
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