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#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "util/u_math.h"
#include "nouveau/nouveau_screen.h"
#include "nouveau/nouveau_winsys.h"
#include "nvfx_resource.h"
/* Currently using separate implementations for buffers and textures,
* even though gallium has a unified abstraction of these objects.
* Eventually these should be combined, and mechanisms like transfers
* be adapted to work for both buffer and texture uploads.
*/
static void nvfx_buffer_destroy(struct pipe_screen *pscreen,
struct pipe_resource *presource)
{
struct nvfx_resource *buffer = nvfx_resource(presource);
nouveau_screen_bo_release(pscreen, buffer->bo);
FREE(buffer);
}
/* Utility functions for transfer create/destroy are hooked in and
* just record the arguments to those functions.
*/
static void *
nvfx_buffer_transfer_map( struct pipe_context *pipe,
struct pipe_transfer *transfer )
{
struct nvfx_resource *buffer = nvfx_resource(transfer->resource);
uint8_t *map;
map = nouveau_screen_bo_map_range( pipe->screen,
buffer->bo,
transfer->box.x,
transfer->box.width,
nouveau_screen_transfer_flags(transfer->usage) );
if (map == NULL)
return NULL;
return map + transfer->box.x;
}
static void nvfx_buffer_transfer_flush_region( struct pipe_context *pipe,
struct pipe_transfer *transfer,
const struct pipe_box *box)
{
struct nvfx_resource *buffer = nvfx_resource(transfer->resource);
nouveau_screen_bo_map_flush_range(pipe->screen,
buffer->bo,
transfer->box.x + box->x,
box->width);
}
static void nvfx_buffer_transfer_unmap( struct pipe_context *pipe,
struct pipe_transfer *transfer )
{
struct nvfx_resource *buffer = nvfx_resource(transfer->resource);
nouveau_screen_bo_unmap(pipe->screen, buffer->bo);
}
struct u_resource_vtbl nvfx_buffer_vtbl =
{
u_default_resource_get_handle, /* get_handle */
nvfx_buffer_destroy, /* resource_destroy */
NULL, /* is_resource_referenced */
u_default_get_transfer, /* get_transfer */
u_default_transfer_destroy, /* transfer_destroy */
nvfx_buffer_transfer_map, /* transfer_map */
nvfx_buffer_transfer_flush_region, /* transfer_flush_region */
nvfx_buffer_transfer_unmap, /* transfer_unmap */
u_default_transfer_inline_write /* transfer_inline_write */
};
struct pipe_resource *
nvfx_buffer_create(struct pipe_screen *pscreen,
const struct pipe_resource *template)
{
struct nvfx_resource *buffer;
buffer = CALLOC_STRUCT(nvfx_resource);
if (!buffer)
return NULL;
buffer->base = *template;
buffer->vtbl = &nvfx_buffer_vtbl;
pipe_reference_init(&buffer->base.reference, 1);
buffer->base.screen = pscreen;
buffer->bo = nouveau_screen_bo_new(pscreen,
16,
buffer->base._usage,
buffer->base.bind,
buffer->base.width0);
if (buffer->bo == NULL)
goto fail;
return &buffer->base;
fail:
FREE(buffer);
return NULL;
}
struct pipe_resource *
nvfx_user_buffer_create(struct pipe_screen *pscreen,
void *ptr,
unsigned bytes,
unsigned usage)
{
struct nvfx_resource *buffer;
buffer = CALLOC_STRUCT(nvfx_resource);
if (!buffer)
return NULL;
pipe_reference_init(&buffer->base.reference, 1);
buffer->vtbl = &nvfx_buffer_vtbl;
buffer->base.screen = pscreen;
buffer->base.format = PIPE_FORMAT_R8_UNORM;
buffer->base._usage = PIPE_USAGE_IMMUTABLE;
buffer->base.bind = usage;
buffer->base.width0 = bytes;
buffer->base.height0 = 1;
buffer->base.depth0 = 1;
buffer->bo = nouveau_screen_bo_user(pscreen, ptr, bytes);
if (!buffer->bo)
goto fail;
return &buffer->base;
fail:
FREE(buffer);
return NULL;
}
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