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#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "util/u_memory.h"
#include "util/u_math.h"
#include "util/u_staging.h"
#include "nvfx_context.h"
#include "nvfx_screen.h"
#include "nvfx_state.h"
#include "nvfx_resource.h"
#include "nvfx_transfer.h"
struct nvfx_staging_transfer
{
struct util_staging_transfer base;
unsigned offset;
unsigned map_count;
};
struct pipe_transfer *
nvfx_transfer_new(struct pipe_context *pipe,
struct pipe_resource *pt,
struct pipe_subresource sr,
unsigned usage,
const struct pipe_box *box)
{
struct nvfx_staging_transfer* tx;
bool direct = !nvfx_resource_on_gpu(pt) && pt->flags & NVFX_RESOURCE_FLAG_LINEAR;
tx = CALLOC_STRUCT(nvfx_staging_transfer);
if(!tx)
return NULL;
util_staging_transfer_init(pipe, pt, sr, usage, box, direct, tx);
if(pt->target == PIPE_BUFFER)
{
tx->base.base.slice_stride = tx->base.base.stride = ((struct nvfx_resource*)tx->base.staging_resource)->bo->size;
if(direct)
tx->offset = util_format_get_stride(pt->format, box->x);
else
tx->offset = 0;
}
else
{
if(direct)
{
tx->base.base.stride = nvfx_subresource_pitch(pt, sr.level);
tx->base.base.slice_stride = tx->base.base.stride * u_minify(pt->height0, sr.level);
tx->offset = nvfx_subresource_offset(pt, sr.face, sr.level, box->z)
+ util_format_get_2d_size(pt->format, tx->base.base.stride, box->y)
+ util_format_get_stride(pt->format, box->x);
}
else
{
tx->base.base.stride = nvfx_subresource_pitch(tx->base.staging_resource, 0);
tx->base.base.slice_stride = tx->base.base.stride * tx->base.staging_resource->height0;
tx->offset = 0;
}
assert(tx->base.base.stride);
return &tx->base.base;
}
}
void *
nvfx_transfer_map(struct pipe_context *pipe, struct pipe_transfer *ptx)
{
struct nvfx_staging_transfer *tx = (struct nvfx_staging_transfer *)ptx;
if(!ptx->data)
{
struct nvfx_miptree *mt = (struct nvfx_miptree *)tx->base.staging_resource;
uint8_t *map = nouveau_screen_bo_map(pipe->screen, mt->base.bo, nouveau_screen_transfer_flags(ptx->usage));
ptx->data = map + tx->offset;
}
++tx->map_count;
return ptx->data;
}
void
nvfx_transfer_unmap(struct pipe_context *pipe, struct pipe_transfer *ptx)
{
struct nvfx_staging_transfer *tx = (struct nvfx_staging_transfer *)ptx;
struct nvfx_miptree *mt = (struct nvfx_miptree *)tx->base.staging_resource;
if(!--tx->map_count)
nouveau_screen_bo_unmap(pipe->screen, mt->base.bo);
}
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