C++ (Cpp) fd_resource_transfer_flush_region示例

示例#1

文件： freedreno_resource.c 项目： Bluerise/bitrig-xenocara

static void *
fd_resource_transfer_map(struct pipe_context *pctx,
		struct pipe_resource *prsc,
		unsigned level, unsigned usage,
		const struct pipe_box *box,
		struct pipe_transfer **pptrans)
{
	struct fd_context *ctx = fd_context(pctx);
	struct fd_resource *rsc = fd_resource(prsc);
	struct pipe_transfer *ptrans = util_slab_alloc(&ctx->transfer_pool);
	enum pipe_format format = prsc->format;
	uint32_t op = 0;
	char *buf;

	if (!ptrans)
		return NULL;

	/* util_slab_alloc() doesn't zero: */
	memset(ptrans, 0, sizeof(*ptrans));

	pipe_resource_reference(&ptrans->resource, prsc);
	ptrans->level = level;
	ptrans->usage = usage;
	ptrans->box = *box;
	ptrans->stride = rsc->pitch * rsc->cpp;
	ptrans->layer_stride = ptrans->stride;

	/* some state trackers (at least XA) don't do this.. */
	if (!(usage & PIPE_TRANSFER_FLUSH_EXPLICIT))
		fd_resource_transfer_flush_region(pctx, ptrans, box);

	buf = fd_bo_map(rsc->bo);
	if (!buf) {
		fd_resource_transfer_unmap(pctx, ptrans);
		return NULL;
	}

	if (usage & PIPE_TRANSFER_READ)
		op |= DRM_FREEDRENO_PREP_READ;

	if (usage & PIPE_TRANSFER_WRITE)
		op |= DRM_FREEDRENO_PREP_WRITE;

	if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED))
		fd_bo_cpu_prep(rsc->bo, ctx->screen->pipe, op);

	*pptrans = ptrans;

	return buf +
		box->y / util_format_get_blockheight(format) * ptrans->stride +
		box->x / util_format_get_blockwidth(format) * rsc->cpp;
}

示例#2

文件： freedreno_resource.c 项目： iquiw/xsrc

static void *
fd_resource_transfer_map(struct pipe_context *pctx,
		struct pipe_resource *prsc,
		unsigned level, unsigned usage,
		const struct pipe_box *box,
		struct pipe_transfer **pptrans)
{
	struct fd_context *ctx = fd_context(pctx);
	struct fd_resource *rsc = fd_resource(prsc);
	struct fd_resource_slice *slice = fd_resource_slice(rsc, level);
	struct pipe_transfer *ptrans;
	enum pipe_format format = prsc->format;
	uint32_t op = 0;
	char *buf;
	int ret = 0;

	ptrans = util_slab_alloc(&ctx->transfer_pool);
	if (!ptrans)
		return NULL;

	/* util_slab_alloc() doesn't zero: */
	memset(ptrans, 0, sizeof(*ptrans));

	pipe_resource_reference(&ptrans->resource, prsc);
	ptrans->level = level;
	ptrans->usage = usage;
	ptrans->box = *box;
	ptrans->stride = slice->pitch * rsc->cpp;
	ptrans->layer_stride = slice->size0;

	if (usage & PIPE_TRANSFER_READ)
		op |= DRM_FREEDRENO_PREP_READ;

	if (usage & PIPE_TRANSFER_WRITE)
		op |= DRM_FREEDRENO_PREP_WRITE;

	if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE)
		op |= DRM_FREEDRENO_PREP_NOSYNC;

	/* some state trackers (at least XA) don't do this.. */
	if (!(usage & (PIPE_TRANSFER_FLUSH_EXPLICIT | PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE)))
		fd_resource_transfer_flush_region(pctx, ptrans, box);

	if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
		ret = fd_bo_cpu_prep(rsc->bo, ctx->screen->pipe, op);
		if ((ret == -EBUSY) && (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE))
			realloc_bo(rsc, fd_bo_size(rsc->bo));
		else if (ret)
			goto fail;
	}

	buf = fd_bo_map(rsc->bo);
	if (!buf) {
		fd_resource_transfer_unmap(pctx, ptrans);
		return NULL;
	}

	*pptrans = ptrans;

	return buf + slice->offset +
		box->y / util_format_get_blockheight(format) * ptrans->stride +
		box->x / util_format_get_blockwidth(format) * rsc->cpp +
		box->z * slice->size0;

fail:
	fd_resource_transfer_unmap(pctx, ptrans);
	return NULL;
}