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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 "svga_context.h"
#include "svga_screen_texture.h"
#include "svga_state.h"
#include "svga_winsys.h"
#include "svga_hw_reg.h"
static void svga_set_scissor_state( struct pipe_context *pipe,
const struct pipe_scissor_state *scissor )
{
struct svga_context *svga = svga_context(pipe);
memcpy( &svga->curr.scissor, scissor, sizeof(*scissor) );
svga->dirty |= SVGA_NEW_SCISSOR;
}
static void svga_set_polygon_stipple( struct pipe_context *pipe,
const struct pipe_poly_stipple *stipple )
{
/* overridden by the draw module */
}
void svga_cleanup_framebuffer(struct svga_context *svga)
{
struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
int i;
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
pipe_surface_reference(&curr->cbufs[i], NULL);
pipe_surface_reference(&hw->cbufs[i], NULL);
}
pipe_surface_reference(&curr->zsbuf, NULL);
pipe_surface_reference(&hw->zsbuf, NULL);
}
#define DEPTH_BIAS_SCALE_FACTOR_D16 ((float)(1<<15))
#define DEPTH_BIAS_SCALE_FACTOR_D24S8 ((float)(1<<23))
#define DEPTH_BIAS_SCALE_FACTOR_D32 ((float)(1<<31))
static void svga_set_framebuffer_state(struct pipe_context *pipe,
const struct pipe_framebuffer_state *fb)
{
struct svga_context *svga = svga_context(pipe);
struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
boolean propagate = FALSE;
int i;
dst->width = fb->width;
dst->height = fb->height;
dst->nr_cbufs = fb->nr_cbufs;
/* check if we need to propaget any of the target surfaces */
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
if (dst->cbufs[i] && dst->cbufs[i] != fb->cbufs[i])
if (svga_surface_needs_propagation(dst->cbufs[i]))
propagate = TRUE;
}
if (propagate) {
/* make sure that drawing calls comes before propagation calls */
svga_hwtnl_flush_retry( svga );
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
if (dst->cbufs[i] && dst->cbufs[i] != fb->cbufs[i])
svga_propagate_surface(pipe, dst->cbufs[i]);
}
/* XXX: Actually the virtual hardware may support rendertargets with
* different size, depending on the host API and driver, but since we cannot
* know that make no such assumption here. */
for(i = 0; i < fb->nr_cbufs; ++i) {
if (fb->zsbuf && fb->cbufs[i]) {
assert(fb->zsbuf->width == fb->cbufs[i]->width);
assert(fb->zsbuf->height == fb->cbufs[i]->height);
}
}
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
pipe_surface_reference(&dst->cbufs[i], fb->cbufs[i]);
pipe_surface_reference(&dst->zsbuf, fb->zsbuf);
if (svga->curr.framebuffer.zsbuf)
{
switch (svga->curr.framebuffer.zsbuf->format) {
case PIPE_FORMAT_Z16_UNORM:
svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D16;
break;
case PIPE_FORMAT_S8Z24_UNORM:
case PIPE_FORMAT_X8Z24_UNORM:
case PIPE_FORMAT_Z24S8_UNORM:
case PIPE_FORMAT_Z24X8_UNORM:
svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D24S8;
break;
case PIPE_FORMAT_Z32_UNORM:
svga->curr.depthscale = 1.0f / DEPTH_BIAS_SCALE_FACTOR_D32;
break;
case PIPE_FORMAT_Z32_FLOAT:
svga->curr.depthscale = 1.0f / ((float)(1<<23));
break;
default:
svga->curr.depthscale = 0.0f;
break;
}
}
else {
svga->curr.depthscale = 0.0f;
}
svga->dirty |= SVGA_NEW_FRAME_BUFFER;
}
static void svga_set_clip_state( struct pipe_context *pipe,
const struct pipe_clip_state *clip )
{
struct svga_context *svga = svga_context(pipe);
svga->curr.clip = *clip; /* struct copy */
svga->dirty |= SVGA_NEW_CLIP;
}
/* Called when driver state tracker notices changes to the viewport
* matrix:
*/
static void svga_set_viewport_state( struct pipe_context *pipe,
const struct pipe_viewport_state *viewport )
{
struct svga_context *svga = svga_context(pipe);
svga->curr.viewport = *viewport; /* struct copy */
svga->dirty |= SVGA_NEW_VIEWPORT;
}
void svga_init_misc_functions( struct svga_context *svga )
{
svga->pipe.set_scissor_state = svga_set_scissor_state;
svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
svga->pipe.set_clip_state = svga_set_clip_state;
svga->pipe.set_viewport_state = svga_set_viewport_state;
}
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