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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 "nv30_context.h"
#include "nv30_screen.h"
static void
nv30_miptree_layout(struct nv30_miptree *nv30mt)
{
struct pipe_texture *pt = &nv30mt->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)
nv30mt->level[l].pitch = pt->width[l] * pt->cpp;
else
nv30mt->level[l].pitch = pt->width[0] * pt->cpp;
nv30mt->level[l].pitch = (nv30mt->level[l].pitch + 63) & ~63;
nv30mt->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++) {
nv30mt->level[l].image_offset[f] = offset;
offset += nv30mt->level[l].pitch * pt->height[l];
}
}
nv30mt->total_size = offset;
}
static void
nv30_miptree_create(struct pipe_screen *screen, struct pipe_texture **pt)
{
struct pipe_winsys *ws = screen->winsys;
struct nv30_miptree *nv30mt;
nv30mt = realloc(*pt, sizeof(struct nv30_miptree));
if (!nv30mt)
return;
*pt = NULL;
nv30_miptree_layout(nv30mt);
nv30mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL,
nv30mt->total_size);
if (!nv30mt->buffer) {
free(nv30mt);
return;
}
*pt = &nv30mt->base;
}
static void
nv30_miptree_release(struct pipe_screen *screen, struct pipe_texture **pt)
{
struct pipe_winsys *ws = screen->winsys;
struct pipe_texture *mt = *pt;
*pt = NULL;
if (--mt->refcount <= 0) {
struct nv30_miptree *nv30mt = (struct nv30_miptree *)mt;
int l;
pipe_buffer_reference(ws, &nv30mt->buffer, NULL);
for (l = 0; l <= mt->last_level; l++) {
if (nv30mt->level[l].image_offset)
free(nv30mt->level[l].image_offset);
}
free(nv30mt);
}
}
static struct pipe_surface *
nv30_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
unsigned face, unsigned level, unsigned zslice)
{
struct pipe_winsys *ws = screen->winsys;
struct nv30_miptree *nv30mt = (struct nv30_miptree *)pt;
struct pipe_surface *ps;
ps = ws->surface_alloc(ws);
if (!ps)
return NULL;
pipe_buffer_reference(ws, &ps->buffer, nv30mt->buffer);
ps->format = pt->format;
ps->cpp = pt->cpp;
ps->width = pt->width[level];
ps->height = pt->height[level];
ps->pitch = nv30mt->level[level].pitch / ps->cpp;
if (pt->target == PIPE_TEXTURE_CUBE) {
ps->offset = nv30mt->level[level].image_offset[face];
} else
if (pt->target == PIPE_TEXTURE_3D) {
ps->offset = nv30mt->level[level].image_offset[zslice];
} else {
ps->offset = nv30mt->level[level].image_offset[0];
}
return ps;
}
void
nv30_init_miptree_functions(struct pipe_screen *screen)
{
struct nv30_screen *nv30screen = nv30_screen(screen);
nv30screen->screen.texture_create = nv30_miptree_create;
nv30screen->screen.texture_release = nv30_miptree_release;
nv30screen->screen.get_tex_surface = nv30_miptree_surface_get;
}
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