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#include <pipe/p_state.h>
#include <pipe/p_defines.h>
#include <pipe/p_inlines.h>
#include <util/u_memory.h>
#include <nouveau/nouveau_winsys.h>
#include "nv20_context.h"
#include "nv20_screen.h"
#include "nv20_state.h"
struct nv20_transfer {
struct pipe_transfer base;
struct pipe_surface *surface;
bool direct;
};
static unsigned nv20_usage_tx_to_buf(unsigned tx_usage)
{
switch (tx_usage) {
case PIPE_TRANSFER_READ:
return PIPE_BUFFER_USAGE_CPU_READ;
case PIPE_TRANSFER_WRITE:
return PIPE_BUFFER_USAGE_CPU_WRITE;
case PIPE_TRANSFER_READ_WRITE:
return PIPE_BUFFER_USAGE_CPU_READ_WRITE;
default:
assert(0);
}
return -1;
}
static void
nv20_compatible_transfer_tex(struct pipe_texture *pt, unsigned level,
struct pipe_texture *template)
{
memset(template, 0, sizeof(struct pipe_texture));
template->target = pt->target;
template->format = pt->format;
template->width[0] = pt->width[level];
template->height[0] = pt->height[level];
template->depth[0] = 1;
template->block = pt->block;
template->nblocksx[0] = pt->nblocksx[level];
template->nblocksy[0] = pt->nblocksx[level];
template->last_level = 0;
template->compressed = pt->compressed;
template->nr_samples = pt->nr_samples;
template->tex_usage = PIPE_TEXTURE_USAGE_DYNAMIC |
NOUVEAU_TEXTURE_USAGE_LINEAR;
}
static struct pipe_transfer *
nv20_transfer_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
unsigned face, unsigned level, unsigned zslice,
enum pipe_transfer_usage usage,
unsigned x, unsigned y, unsigned w, unsigned h)
{
struct nv20_miptree *mt = (struct nv20_miptree *)pt;
struct nv20_transfer *tx;
struct pipe_texture tx_tex_template, *tx_tex;
tx = CALLOC_STRUCT(nv20_transfer);
if (!tx)
return NULL;
tx->base.refcount = 1;
pipe_texture_reference(&tx->base.texture, pt);
tx->base.format = pt->format;
tx->base.x = x;
tx->base.y = y;
tx->base.width = w;
tx->base.height = h;
tx->base.block = pt->block;
tx->base.nblocksx = pt->nblocksx[level];
tx->base.nblocksy = pt->nblocksy[level];
tx->base.stride = mt->level[level].pitch;
tx->base.usage = usage;
tx->base.face = face;
tx->base.level = level;
tx->base.zslice = zslice;
/* Direct access to texture */
if ((pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC ||
debug_get_bool_option("NOUVEAU_NO_TRANSFER", TRUE/*XXX:FALSE*/)) &&
pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR)
{
tx->direct = true;
tx->surface = pscreen->get_tex_surface(pscreen, pt,
0, 0, 0,
nv20_usage_tx_to_buf(usage));
return &tx->base;
}
tx->direct = false;
nv20_compatible_transfer_tex(pt, level, &tx_tex_template);
tx_tex = pscreen->texture_create(pscreen, &tx_tex_template);
if (!tx_tex)
{
FREE(tx);
return NULL;
}
tx->surface = pscreen->get_tex_surface(pscreen, tx_tex,
face, level, zslice,
nv20_usage_tx_to_buf(usage));
pipe_texture_reference(&tx_tex, NULL);
if (!tx->surface)
{
pipe_surface_reference(&tx->surface, NULL);
FREE(tx);
return NULL;
}
if (usage != PIPE_TRANSFER_WRITE) {
struct nv20_screen *nvscreen = nv20_screen(pscreen);
struct pipe_surface *src;
src = pscreen->get_tex_surface(pscreen, pt,
face, level, zslice,
PIPE_BUFFER_USAGE_GPU_READ);
/* TODO: Check if SIFM can deal with x,y,w,h when swizzling */
/* TODO: Check if SIFM can un-swizzle */
nvscreen->eng2d->copy(nvscreen->eng2d,
tx->surface, 0, 0,
src, 0, 0,
src->width, src->height);
pipe_surface_reference(&src, NULL);
}
return &tx->base;
}
static void
nv20_transfer_del(struct pipe_screen *pscreen, struct pipe_transfer **pptx)
{
struct pipe_transfer *ptx = *pptx;
struct nv20_transfer *tx = (struct nv20_transfer *)ptx;
if (!tx->direct && ptx->usage != PIPE_TRANSFER_READ) {
struct nv20_screen *nvscreen = nv20_screen(pscreen);
struct pipe_surface *dst;
dst = pscreen->get_tex_surface(pscreen, ptx->texture,
ptx->face, ptx->level, ptx->zslice,
PIPE_BUFFER_USAGE_GPU_WRITE);
/* TODO: Check if SIFM can deal with x,y,w,h when swizzling */
nvscreen->eng2d->copy(nvscreen->eng2d,
dst, 0, 0,
tx->surface, 0, 0,
dst->width, dst->height);
pipe_surface_reference(&dst, NULL);
}
*pptx = NULL;
if (--ptx->refcount)
return;
pipe_surface_reference(&tx->surface, NULL);
pipe_texture_reference(&ptx->texture, NULL);
FREE(ptx);
}
static void *
nv20_transfer_map(struct pipe_screen *pscreen, struct pipe_transfer *ptx)
{
struct nv20_transfer *tx = (struct nv20_transfer *)ptx;
struct nv04_surface *ns = (struct nv04_surface *)tx->surface;
struct nv20_miptree *mt = (struct nv20_miptree *)tx->surface->texture;
void *map = pipe_buffer_map(pscreen, mt->buffer,
nv20_usage_tx_to_buf(ptx->usage));
return map + ns->base.offset +
ptx->y * ns->pitch + ptx->x * ptx->block.size;
}
static void
nv20_transfer_unmap(struct pipe_screen *pscreen, struct pipe_transfer *ptx)
{
struct nv20_transfer *tx = (struct nv20_transfer *)ptx;
struct nv20_miptree *mt = (struct nv20_miptree *)tx->surface->texture;
pipe_buffer_unmap(pscreen, mt->buffer);
}
void
nv20_screen_init_transfer_functions(struct pipe_screen *pscreen)
{
pscreen->get_tex_transfer = nv20_transfer_new;
pscreen->tex_transfer_release = nv20_transfer_del;
pscreen->transfer_map = nv20_transfer_map;
pscreen->transfer_unmap = nv20_transfer_unmap;
}
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