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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 "util/u_framebuffer.h"
#include "util/u_inlines.h"
#include "util/u_pstipple.h"
#include "svga_cmd.h"
#include "svga_context.h"
#include "svga_screen.h"
#include "svga_surface.h"
#include "svga_resource_texture.h"
static void
svga_set_scissor_states(struct pipe_context *pipe,
unsigned start_slot,
unsigned num_scissors,
const struct pipe_scissor_state *scissors)
{
struct svga_context *svga = svga_context(pipe);
memcpy(&svga->curr.scissor, scissors, sizeof(*scissors));
svga->dirty |= SVGA_NEW_SCISSOR;
}
static void
svga_set_polygon_stipple(struct pipe_context *pipe,
const struct pipe_poly_stipple *stipple)
{
struct svga_context *svga = svga_context(pipe);
/* release old texture */
pipe_resource_reference(&svga->polygon_stipple.texture, NULL);
/* release old sampler view */
if (svga->polygon_stipple.sampler_view) {
pipe->sampler_view_destroy(pipe,
&svga->polygon_stipple.sampler_view->base);
}
/* create new stipple texture */
svga->polygon_stipple.texture =
util_pstipple_create_stipple_texture(pipe, stipple->stipple);
/* create new sampler view */
svga->polygon_stipple.sampler_view =
(struct svga_pipe_sampler_view *)
util_pstipple_create_sampler_view(pipe,
svga->polygon_stipple.texture);
/* allocate sampler state, if first time */
if (!svga->polygon_stipple.sampler) {
svga->polygon_stipple.sampler = util_pstipple_create_sampler(pipe);
}
svga->dirty |= SVGA_NEW_STIPPLE;
}
void
svga_cleanup_framebuffer(struct svga_context *svga)
{
struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
struct pipe_framebuffer_state *curr = &svga->curr.framebuffer;
struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer;
unsigned i;
for (i = 0; i < svgascreen->max_color_buffers; 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;
unsigned i;
/* make sure any pending drawing calls are flushed before changing
* the framebuffer state
*/
svga_hwtnl_flush_retry(svga);
dst->width = fb->width;
dst->height = fb->height;
dst->nr_cbufs = fb->nr_cbufs;
/* Check that all surfaces are the same size.
* Actually, the virtual hardware may support rendertargets with
* different size, depending on the host API and driver,
*/
{
int width = 0, height = 0;
if (fb->zsbuf) {
width = fb->zsbuf->width;
height = fb->zsbuf->height;
}
for (i = 0; i < fb->nr_cbufs; ++i) {
if (fb->cbufs[i]) {
if (width && height) {
if (fb->cbufs[i]->width != width ||
fb->cbufs[i]->height != height) {
debug_warning("Mixed-size color and depth/stencil surfaces "
"may not work properly");
}
}
else {
width = fb->cbufs[i]->width;
height = fb->cbufs[i]->height;
}
}
}
}
util_copy_framebuffer_state(dst, fb);
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_Z24_UNORM_S8_UINT:
case PIPE_FORMAT_Z24X8_UNORM:
case PIPE_FORMAT_S8_UINT_Z24_UNORM:
case PIPE_FORMAT_X8Z24_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;
}
static void
svga_set_viewport_states(struct pipe_context *pipe,
unsigned start_slot,
unsigned num_viewports,
const struct pipe_viewport_state *viewports)
{
struct svga_context *svga = svga_context(pipe);
svga->curr.viewport = *viewports; /* struct copy */
svga->dirty |= SVGA_NEW_VIEWPORT;
}
/**
* Called by state tracker to specify a callback function the driver
* can use to report info back to the state tracker.
*/
static void
svga_set_debug_callback(struct pipe_context *pipe,
const struct pipe_debug_callback *cb)
{
struct svga_context *svga = svga_context(pipe);
if (cb) {
svga->debug.callback = *cb;
svga->swc->debug_callback = &svga->debug.callback;
} else {
memset(&svga->debug.callback, 0, sizeof(svga->debug.callback));
svga->swc->debug_callback = NULL;
}
}
void
svga_init_misc_functions(struct svga_context *svga)
{
svga->pipe.set_scissor_states = svga_set_scissor_states;
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_states = svga_set_viewport_states;
svga->pipe.set_debug_callback = svga_set_debug_callback;
}
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