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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_state.h"
#include "pipe/p_defines.h"
#include "pipe/p_util.h"
#include "pipe/p_inlines.h"
#include "nv50_context.h"
static struct pipe_texture *
nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
{
struct pipe_winsys *ws = pscreen->winsys;
struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
unsigned usage, pitch;
mt->base = *pt;
mt->base.refcount = 1;
mt->base.screen = pscreen;
usage = PIPE_BUFFER_USAGE_PIXEL;
switch (pt->format) {
case PIPE_FORMAT_Z24S8_UNORM:
case PIPE_FORMAT_Z16_UNORM:
usage |= NOUVEAU_BUFFER_USAGE_ZETA;
break;
default:
break;
}
pitch = ((pt->width[0] + 63) & ~63) * pt->block.size;
mt->buffer = ws->buffer_create(ws, 256, usage, pitch * pt->height[0]);
if (!mt->buffer) {
FREE(mt);
return NULL;
}
return &mt->base;
}
static void
nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
{
struct pipe_winsys *ws = pscreen->winsys;
struct pipe_texture *pt = *ppt;
*ppt = NULL;
if (--pt->refcount <= 0) {
struct nv50_miptree *mt = nv50_miptree(pt);
pipe_buffer_reference(ws, &mt->buffer, NULL);
FREE(mt);
}
}
static struct pipe_surface *
nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
unsigned face, unsigned level, unsigned zslice,
unsigned flags)
{
struct pipe_winsys *ws = pscreen->winsys;
struct nv50_miptree *mt = nv50_miptree(pt);
struct pipe_surface *ps;
ps = CALLOC_STRUCT(pipe_surface);
ps->refcount = 1;
ps->winsys = ws;
ps->format = pt->format;
ps->width = pt->width[level];
ps->height = pt->height[level];
ps->block = pt->block;
ps->nblocksx = pt->nblocksx[level];
ps->nblocksy = pt->nblocksy[level];
ps->stride = ps->width * ps->block.size;
ps->offset = 0;
ps->usage = flags;
ps->status = PIPE_SURFACE_STATUS_DEFINED;
pipe_texture_reference(&ps->texture, pt);
pipe_buffer_reference(ws, &ps->buffer, mt->buffer);
return ps;
}
static void
nv50_miptree_surface_del(struct pipe_screen *pscreen,
struct pipe_surface **psurface)
{
struct pipe_winsys *ws = pscreen->winsys;
struct pipe_surface *surf = *psurface;
*psurface = NULL;
if (--surf->refcount <= 0) {
pipe_texture_reference(&surf->texture, NULL);
pipe_buffer_reference(ws, &surf->buffer, NULL);
FREE(surf);
}
}
void
nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
{
pscreen->texture_create = nv50_miptree_create;
pscreen->texture_release = nv50_miptree_release;
pscreen->get_tex_surface = nv50_miptree_surface_new;
pscreen->tex_surface_release = nv50_miptree_surface_del;
}
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