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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 "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "os/os_thread.h"
#include "util/u_format.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "svga_screen.h"
#include "svga_context.h"
#include "svga_resource_texture.h"
#include "svga_sampler_view.h"
#include "svga_debug.h"
#include "svga_surface.h"
struct svga_sampler_view *
svga_get_tex_sampler_view(struct pipe_context *pipe,
struct pipe_resource *pt,
unsigned min_lod, unsigned max_lod)
{
struct svga_screen *ss = svga_screen(pt->screen);
struct svga_texture *tex = svga_texture(pt);
struct svga_sampler_view *sv = NULL;
SVGA3dSurfaceFormat format = svga_translate_format(pt->format);
boolean view = TRUE;
assert(pt);
assert(min_lod >= 0);
assert(min_lod <= max_lod);
assert(max_lod <= pt->last_level);
/* Is a view needed */
{
/*
* Can't control max lod. For first level views and when we only
* look at one level we disable mip filtering to achive the same
* results as a view.
*/
if (min_lod == 0 && max_lod >= pt->last_level)
view = FALSE;
if (util_format_is_s3tc(pt->format) && view) {
format = svga_translate_format_render(pt->format);
}
if (ss->debug.no_sampler_view)
view = FALSE;
if (ss->debug.force_sampler_view)
view = TRUE;
}
/* First try the cache */
if (view) {
pipe_mutex_lock(ss->tex_mutex);
if (tex->cached_view &&
tex->cached_view->min_lod == min_lod &&
tex->cached_view->max_lod == max_lod) {
svga_sampler_view_reference(&sv, tex->cached_view);
pipe_mutex_unlock(ss->tex_mutex);
SVGA_DBG(DEBUG_VIEWS, "svga: Sampler view: reuse %p, %u %u, last %u\n",
pt, min_lod, max_lod, pt->last_level);
svga_validate_sampler_view(svga_context(pipe), sv);
return sv;
}
pipe_mutex_unlock(ss->tex_mutex);
}
sv = CALLOC_STRUCT(svga_sampler_view);
pipe_reference_init(&sv->reference, 1);
pipe_resource_reference(&sv->texture, pt);
sv->min_lod = min_lod;
sv->max_lod = max_lod;
/* No view needed just use the whole texture */
if (!view) {
SVGA_DBG(DEBUG_VIEWS,
"svga: Sampler view: no %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
pt, min_lod, max_lod,
max_lod - min_lod + 1,
pt->width0,
pt->height0,
pt->depth0,
pt->last_level);
sv->key.cachable = 0;
sv->handle = tex->handle;
return sv;
}
SVGA_DBG(DEBUG_VIEWS,
"svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
pt, min_lod, max_lod,
max_lod - min_lod + 1,
pt->width0,
pt->height0,
pt->depth0,
pt->last_level);
sv->age = tex->age;
sv->handle = svga_texture_view_surface(pipe, tex, format,
min_lod,
max_lod - min_lod + 1,
-1, -1,
&sv->key);
if (!sv->handle) {
assert(0);
sv->key.cachable = 0;
sv->handle = tex->handle;
return sv;
}
pipe_mutex_lock(ss->tex_mutex);
svga_sampler_view_reference(&tex->cached_view, sv);
pipe_mutex_unlock(ss->tex_mutex);
return sv;
}
void
svga_validate_sampler_view(struct svga_context *svga, struct svga_sampler_view *v)
{
struct svga_texture *tex = svga_texture(v->texture);
unsigned numFaces;
unsigned age = 0;
int i, k;
assert(svga);
if (v->handle == tex->handle)
return;
age = tex->age;
if(tex->b.b.target == PIPE_TEXTURE_CUBE)
numFaces = 6;
else
numFaces = 1;
for (i = v->min_lod; i <= v->max_lod; i++) {
for (k = 0; k < numFaces; k++) {
if (v->age < tex->view_age[i])
svga_texture_copy_handle(svga,
tex->handle, 0, 0, 0, i, k,
v->handle, 0, 0, 0, i - v->min_lod, k,
u_minify(tex->b.b.width0, i),
u_minify(tex->b.b.height0, i),
u_minify(tex->b.b.depth0, i));
}
}
v->age = age;
}
void
svga_destroy_sampler_view_priv(struct svga_sampler_view *v)
{
struct svga_texture *tex = svga_texture(v->texture);
if(v->handle != tex->handle) {
struct svga_screen *ss = svga_screen(v->texture->screen);
SVGA_DBG(DEBUG_DMA, "unref sid %p (sampler view)\n", v->handle);
svga_screen_surface_destroy(ss, &v->key, &v->handle);
}
pipe_resource_reference(&v->texture, NULL);
FREE(v);
}
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