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#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "pipe/p_inlines.h"
#include "nv20_context.h"
#include "nv20_screen.h"
static void
nv20_miptree_layout(struct nv20_miptree *nv20mt)
{
struct pipe_texture *pt = &nv20mt->base;
boolean swizzled = FALSE;
uint width = pt->width[0], height = pt->height[0];
uint offset = 0;
int nr_faces, l, f;
if (pt->target == PIPE_TEXTURE_CUBE) {
nr_faces = 6;
} else {
nr_faces = 1;
}
for (l = 0; l <= pt->last_level; l++) {
pt->width[l] = width;
pt->height[l] = height;
pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
if (swizzled)
nv20mt->level[l].pitch = pt->nblocksx[l] * pt->block.size;
else
nv20mt->level[l].pitch = pt->nblocksx[0] * pt->block.size;
nv20mt->level[l].pitch = (nv20mt->level[l].pitch + 63) & ~63;
nv20mt->level[l].image_offset =
CALLOC(nr_faces, sizeof(unsigned));
width = MAX2(1, width >> 1);
height = MAX2(1, height >> 1);
}
for (f = 0; f < nr_faces; f++) {
for (l = 0; l <= pt->last_level; l++) {
nv20mt->level[l].image_offset[f] = offset;
offset += nv20mt->level[l].pitch * pt->height[l];
}
}
nv20mt->total_size = offset;
}
static struct pipe_texture *
nv20_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
const unsigned *stride, struct pipe_buffer *pb)
{
struct nv20_miptree *mt;
/* Only supports 2D, non-mipmapped textures for the moment */
if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
pt->depth[0] != 1)
return NULL;
mt = CALLOC_STRUCT(nv20_miptree);
if (!mt)
return NULL;
mt->base = *pt;
mt->base.refcount = 1;
mt->base.screen = pscreen;
mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
pipe_buffer_reference(pscreen, &mt->buffer, pb);
return &mt->base;
}
static struct pipe_texture *
nv20_miptree_create(struct pipe_screen *screen, const struct pipe_texture *pt)
{
struct pipe_winsys *ws = screen->winsys;
struct nv20_miptree *mt;
mt = MALLOC(sizeof(struct nv20_miptree));
if (!mt)
return NULL;
mt->base = *pt;
mt->base.refcount = 1;
mt->base.screen = screen;
nv20_miptree_layout(mt);
mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL,
mt->total_size);
if (!mt->buffer) {
FREE(mt);
return NULL;
}
return &mt->base;
}
static void
nv20_miptree_release(struct pipe_screen *screen, struct pipe_texture **pt)
{
struct pipe_texture *mt = *pt;
*pt = NULL;
if (--mt->refcount <= 0) {
struct nv20_miptree *nv20mt = (struct nv20_miptree *)mt;
int l;
pipe_buffer_reference(screen, &nv20mt->buffer, NULL);
for (l = 0; l <= mt->last_level; l++) {
if (nv20mt->level[l].image_offset)
FREE(nv20mt->level[l].image_offset);
}
FREE(nv20mt);
}
}
static struct pipe_surface *
nv20_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
unsigned face, unsigned level, unsigned zslice,
unsigned flags)
{
struct nv20_miptree *nv20mt = (struct nv20_miptree *)pt;
struct pipe_surface *ps;
ps = CALLOC_STRUCT(pipe_surface);
if (!ps)
return NULL;
pipe_texture_reference(&ps->texture, pt);
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 = nv20mt->level[level].pitch;
ps->usage = flags;
ps->status = PIPE_SURFACE_STATUS_DEFINED;
ps->refcount = 1;
if (pt->target == PIPE_TEXTURE_CUBE) {
ps->offset = nv20mt->level[level].image_offset[face];
} else
if (pt->target == PIPE_TEXTURE_3D) {
ps->offset = nv20mt->level[level].image_offset[zslice];
} else {
ps->offset = nv20mt->level[level].image_offset[0];
}
return ps;
}
static void
nv20_miptree_surface_release(struct pipe_screen *pscreen,
struct pipe_surface **psurface)
{
struct pipe_surface *ps = *psurface;
*psurface = NULL;
if (--ps->refcount > 0)
return;
pipe_texture_reference(&ps->texture, NULL);
FREE(ps);
}
void nv20_screen_init_miptree_functions(struct pipe_screen *pscreen)
{
pscreen->texture_create = nv20_miptree_create;
pscreen->texture_blanket = nv20_miptree_blanket;
pscreen->texture_release = nv20_miptree_release;
pscreen->get_tex_surface = nv20_miptree_surface_get;
pscreen->tex_surface_release = nv20_miptree_surface_release;
}
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