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#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "pipe/p_inlines.h"
#include "nv40_context.h"
static void
nv40_miptree_layout(struct nv40_miptree *mt)
{
struct pipe_texture *pt = &mt->base;
uint width = pt->width[0], height = pt->height[0], depth = pt->depth[0];
uint offset = 0;
int nr_faces, l, f, pitch;
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;
}
pitch = pt->width[0];
for (l = 0; l <= pt->last_level; l++) {
pt->width[l] = width;
pt->height[l] = height;
pt->depth[l] = depth;
pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
if (!(pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR))
pitch = pt->nblocksx[l];
pitch = align(pitch, 64);
mt->level[l].pitch = pitch * pt->block.size;
mt->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++) {
mt->level[l].image_offset[f] = offset;
offset += mt->level[l].pitch * pt->height[l];
}
}
mt->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;
unsigned buf_usage = PIPE_BUFFER_USAGE_PIXEL |
NOUVEAU_BUFFER_USAGE_TEXTURE;
mt = MALLOC(sizeof(struct nv40_miptree));
if (!mt)
return NULL;
mt->base = *pt;
mt->base.refcount = 1;
mt->base.screen = pscreen;
mt->shadow_tex = NULL;
mt->shadow_surface = NULL;
/* Swizzled textures must be POT */
if (pt->width[0] & (pt->width[0] - 1) ||
pt->height[0] & (pt->height[0] - 1))
mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
else
if (pt->tex_usage & (PIPE_TEXTURE_USAGE_PRIMARY |
PIPE_TEXTURE_USAGE_DISPLAY_TARGET))
mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
else
if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
else {
switch (pt->format) {
/* TODO: Figure out which formats can be swizzled */
case PIPE_FORMAT_A8R8G8B8_UNORM:
case PIPE_FORMAT_X8R8G8B8_UNORM:
case PIPE_FORMAT_R16_SNORM:
break;
default:
mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
}
}
if (pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC)
buf_usage |= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
nv40_miptree_layout(mt);
mt->buffer = ws->buffer_create(ws, 256, buf_usage, 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 **ppt)
{
struct pipe_texture *pt = *ppt;
struct nv40_miptree *mt = (struct nv40_miptree *)pt;
int l;
*ppt = NULL;
if (--pt->refcount)
return;
pipe_buffer_reference(pscreen, &mt->buffer, NULL);
for (l = 0; l <= pt->last_level; l++) {
if (mt->level[l].image_offset)
FREE(mt->level[l].image_offset);
}
if (mt->shadow_tex) {
assert(mt->shadow_surface);
pscreen->tex_surface_release(pscreen, &mt->shadow_surface);
nv40_miptree_release(pscreen, &mt->shadow_tex);
}
FREE(mt);
}
static struct pipe_surface *
nv40_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
unsigned face, unsigned level, unsigned zslice,
unsigned flags)
{
struct nv40_miptree *mt = (struct nv40_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 = mt->level[level].pitch;
ps->usage = flags;
ps->status = PIPE_SURFACE_STATUS_DEFINED;
ps->refcount = 1;
ps->face = face;
ps->level = level;
ps->zslice = zslice;
if (pt->target == PIPE_TEXTURE_CUBE) {
ps->offset = mt->level[level].image_offset[face];
} else
if (pt->target == PIPE_TEXTURE_3D) {
ps->offset = mt->level[level].image_offset[zslice];
} else {
ps->offset = mt->level[level].image_offset[0];
}
return ps;
}
static void
nv40_miptree_surface_del(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
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_new;
pscreen->tex_surface_release = nv40_miptree_surface_del;
}
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