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/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
* Michel Dänzer <michel@tungstengraphics.com>
*/
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_inlines.h"
#include "pipe/p_util.h"
#include "pipe/p_winsys.h"
#include "sp_context.h"
#include "sp_state.h"
#include "sp_texture.h"
#include "sp_tile_cache.h"
/* Simple, maximally packed layout.
*/
static unsigned minify( unsigned d )
{
return MAX2(1, d>>1);
}
static void
softpipe_texture_layout(struct softpipe_texture * spt)
{
struct pipe_texture *pt = &spt->base;
unsigned level;
unsigned width = pt->width[0];
unsigned height = pt->height[0];
unsigned depth = pt->depth[0];
spt->buffer_size = 0;
for (level = 0; level <= pt->last_level; level++) {
pt->width[level] = width;
pt->height[level] = height;
pt->depth[level] = depth;
spt->level_offset[level] = spt->buffer_size;
spt->buffer_size += ((pt->compressed) ? MAX2(1, height/4) : height) *
((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
width * pt->cpp;
width = minify(width);
height = minify(height);
depth = minify(depth);
}
}
static struct pipe_texture *
softpipe_texture_create_screen(struct pipe_screen *screen,
const struct pipe_texture *templat)
{
struct pipe_winsys *ws = screen->winsys;
struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
if (!spt)
return NULL;
spt->base = *templat;
spt->base.refcount = 1;
spt->base.screen = screen;
softpipe_texture_layout(spt);
spt->buffer = ws->buffer_create(ws, 32,
PIPE_BUFFER_USAGE_PIXEL,
spt->buffer_size);
if (!spt->buffer) {
FREE(spt);
return NULL;
}
assert(spt->base.refcount == 1);
return &spt->base;
}
static void
softpipe_texture_release_screen(struct pipe_screen *screen,
struct pipe_texture **pt)
{
if (!*pt)
return;
/*
DBG("%s %p refcount will be %d\n",
__FUNCTION__, (void *) *pt, (*pt)->refcount - 1);
*/
if (--(*pt)->refcount <= 0) {
struct softpipe_texture *spt = softpipe_texture(*pt);
/*
DBG("%s deleting %p\n", __FUNCTION__, (void *) spt);
*/
pipe_buffer_reference(screen->winsys, &spt->buffer, NULL);
FREE(spt);
}
*pt = NULL;
}
static struct pipe_surface *
softpipe_get_tex_surface_screen(struct pipe_screen *screen,
struct pipe_texture *pt,
unsigned face, unsigned level, unsigned zslice)
{
struct pipe_winsys *ws = screen->winsys;
struct softpipe_texture *spt = softpipe_texture(pt);
struct pipe_surface *ps;
assert(level <= pt->last_level);
ps = ws->surface_alloc(ws);
if (ps) {
assert(ps->refcount);
assert(ps->winsys);
pipe_buffer_reference(ws, &ps->buffer, spt->buffer);
ps->format = pt->format;
ps->cpp = pt->cpp;
ps->width = pt->width[level];
ps->height = pt->height[level];
ps->pitch = ps->width;
ps->offset = spt->level_offset[level];
if (pt->target == PIPE_TEXTURE_CUBE || pt->target == PIPE_TEXTURE_3D) {
ps->offset += ((pt->target == PIPE_TEXTURE_CUBE) ? face : zslice) *
(pt->compressed ? ps->height/4 : ps->height) *
ps->width * ps->cpp;
}
else {
assert(face == 0);
assert(zslice == 0);
}
}
return ps;
}
static void
softpipe_texture_update(struct pipe_context *pipe,
struct pipe_texture *texture)
{
struct softpipe_context *softpipe = softpipe_context(pipe);
uint unit;
for (unit = 0; unit < softpipe->num_textures; unit++) {
if (softpipe->texture[unit] == texture) {
sp_flush_tile_cache(softpipe, softpipe->tex_cache[unit]);
}
}
}
void
softpipe_init_texture_funcs( struct softpipe_context *softpipe )
{
softpipe->pipe.texture_update = softpipe_texture_update;
}
void
softpipe_init_screen_texture_funcs(struct pipe_screen *screen)
{
screen->texture_create = softpipe_texture_create_screen;
screen->texture_release = softpipe_texture_release_screen;
screen->get_tex_surface = softpipe_get_tex_surface_screen;
}
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