diff options
Diffstat (limited to 'src/gallium/drivers/nv30/nv30_transfer.c')
| -rw-r--r-- | src/gallium/drivers/nv30/nv30_transfer.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv30/nv30_transfer.c b/src/gallium/drivers/nv30/nv30_transfer.c new file mode 100644 index 0000000000..2367571878 --- /dev/null +++ b/src/gallium/drivers/nv30/nv30_transfer.c @@ -0,0 +1,195 @@ +#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 "nv30_context.h" +#include "nv30_screen.h" +#include "nv30_state.h" + +struct nv30_transfer { + struct pipe_transfer base; + struct pipe_surface *surface; + bool direct; +}; + +static unsigned nv30_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 +nv30_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->nr_samples = pt->nr_samples; + + template->tex_usage = PIPE_TEXTURE_USAGE_DYNAMIC | + NOUVEAU_TEXTURE_USAGE_LINEAR; +} + +static struct pipe_transfer * +nv30_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 nv30_miptree *mt = (struct nv30_miptree *)pt; + struct nv30_transfer *tx; + struct pipe_texture tx_tex_template, *tx_tex; + + tx = CALLOC_STRUCT(nv30_transfer); + if (!tx) + return NULL; + + 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, + face, level, zslice, + nv30_usage_tx_to_buf(usage)); + return &tx->base; + } + + tx->direct = false; + + nv30_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, + 0, 0, 0, + nv30_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 nv30_screen *nvscreen = nv30_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 +nv30_transfer_del(struct pipe_transfer *ptx) +{ + struct nv30_transfer *tx = (struct nv30_transfer *)ptx; + + if (!tx->direct && ptx->usage != PIPE_TRANSFER_READ) { + struct pipe_screen *pscreen = ptx->texture->screen; + struct nv30_screen *nvscreen = nv30_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); + } + + pipe_surface_reference(&tx->surface, NULL); + pipe_texture_reference(&ptx->texture, NULL); + FREE(ptx); +} + +static void * +nv30_transfer_map(struct pipe_screen *pscreen, struct pipe_transfer *ptx) +{ + struct nv30_transfer *tx = (struct nv30_transfer *)ptx; + struct nv04_surface *ns = (struct nv04_surface *)tx->surface; + struct nv30_miptree *mt = (struct nv30_miptree *)tx->surface->texture; + void *map = pipe_buffer_map(pscreen, mt->buffer, + nv30_usage_tx_to_buf(ptx->usage)); + + return map + ns->base.offset + + ptx->y * ns->pitch + ptx->x * ptx->block.size; +} + +static void +nv30_transfer_unmap(struct pipe_screen *pscreen, struct pipe_transfer *ptx) +{ + struct nv30_transfer *tx = (struct nv30_transfer *)ptx; + struct nv30_miptree *mt = (struct nv30_miptree *)tx->surface->texture; + + pipe_buffer_unmap(pscreen, mt->buffer); +} + +void +nv30_screen_init_transfer_functions(struct pipe_screen *pscreen) +{ + pscreen->get_tex_transfer = nv30_transfer_new; + pscreen->tex_transfer_destroy = nv30_transfer_del; + pscreen->transfer_map = nv30_transfer_map; + pscreen->transfer_unmap = nv30_transfer_unmap; +} |