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#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "pipe/p_util.h"
#include "pipe/p_inlines.h"
#include "nv40_context.h"
static void
nv40_miptree_layout(struct nv40_miptree *nv40mt)
{
struct pipe_texture *pt = &nv40mt->base;
boolean swizzled = FALSE;
uint width = pt->width[0], height = pt->height[0], depth = pt->depth[0];
uint offset = 0;
int nr_faces, l, f;
if (pt->target == PIPE_TEXTURE_CUBE) {
nr_faces = 6;
} else
if (pt->target == PIPE_TEXTURE_3D) {
nr_faces = pt->depth[0];
} else {
nr_faces = 1;
}
for (l = 0; l <= pt->last_level; l++) {
pt->width[l] = width;
pt->height[l] = height;
pt->depth[l] = depth;
if (swizzled)
nv40mt->level[l].pitch = pt->width[l] * pt->cpp;
else
nv40mt->level[l].pitch = pt->width[0] * pt->cpp;
nv40mt->level[l].pitch = (nv40mt->level[l].pitch + 63) & ~63;
nv40mt->level[l].image_offset =
CALLOC(nr_faces, sizeof(unsigned));
width = MAX2(1, width >> 1);
height = MAX2(1, height >> 1);
depth = MAX2(1, depth >> 1);
}
for (f = 0; f < nr_faces; f++) {
for (l = 0; l <= pt->last_level; l++) {
nv40mt->level[l].image_offset[f] = offset;
offset += nv40mt->level[l].pitch * pt->height[l];
}
}
nv40mt->total_size = offset;
}
static struct pipe_texture *
nv40_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
{
struct pipe_winsys *ws = pscreen->winsys;
struct nv40_miptree *mt;
mt = MALLOC(sizeof(struct nv40_miptree));
if (!mt)
return NULL;
mt->base = *pt;
mt->base.refcount = 1;
mt->base.screen = pscreen;
nv40_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
nv40_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **pt)
{
struct pipe_winsys *ws = pscreen->winsys;
struct pipe_texture *mt = *pt;
*pt = NULL;
if (--mt->refcount <= 0) {
struct nv40_miptree *nv40mt = (struct nv40_miptree *)mt;
int l;
pipe_buffer_reference(ws, &nv40mt->buffer, NULL);
for (l = 0; l <= mt->last_level; l++) {
if (nv40mt->level[l].image_offset)
free(nv40mt->level[l].image_offset);
}
free(nv40mt);
}
}
static void
nv40_miptree_update(struct pipe_context *pipe, struct pipe_texture *mt)
{
}
static struct pipe_surface *
nv40_miptree_surface(struct pipe_screen *pscreen, struct pipe_texture *pt,
unsigned face, unsigned level, unsigned zslice)
{
struct pipe_winsys *ws = pscreen->winsys;
struct nv40_miptree *nv40mt = (struct nv40_miptree *)pt;
struct pipe_surface *ps;
ps = ws->surface_alloc(ws);
if (!ps)
return NULL;
pipe_buffer_reference(ws, &ps->buffer, nv40mt->buffer);
ps->format = pt->format;
ps->cpp = pt->cpp;
ps->width = pt->width[level];
ps->height = pt->height[level];
ps->pitch = nv40mt->level[level].pitch / ps->cpp;
if (pt->target == PIPE_TEXTURE_CUBE) {
ps->offset = nv40mt->level[level].image_offset[face];
} else
if (pt->target == PIPE_TEXTURE_3D) {
ps->offset = nv40mt->level[level].image_offset[zslice];
} else {
ps->offset = nv40mt->level[level].image_offset[0];
}
return ps;
}
void
nv40_init_miptree_functions(struct nv40_context *nv40)
{
nv40->pipe.texture_update = nv40_miptree_update;
}
void
nv40_screen_init_miptree_functions(struct pipe_screen *pscreen)
{
pscreen->texture_create = nv40_miptree_create;
pscreen->texture_release = nv40_miptree_release;
pscreen->get_tex_surface = nv40_miptree_surface;
}
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