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st/mesa: implement CopyBufferSubData using resource_copy_region

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Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
This commit is contained in:
Marek Olšák
2011-04-21 12:54:56 +02:00
parent 883d8a0b44
commit f9dafcb8f2
1 changed files with 4 additions and 19 deletions
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src/mesa/state_tracker/st_cb_bufferobjects.c
+4 -19
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@@ -408,9 +408,7 @@ st_copy_buffer_subdata(struct gl_context *ctx,
struct pipe_context *pipe = st_context(ctx)->pipe;
struct st_buffer_object *srcObj = st_buffer_object(src);
struct st_buffer_object *dstObj = st_buffer_object(dst);
struct pipe_transfer *src_transfer;
struct pipe_transfer *dst_transfer;
ubyte *srcPtr, *dstPtr;
struct pipe_box box;
if(!size)
return;
@@ -419,23 +417,10 @@ st_copy_buffer_subdata(struct gl_context *ctx,
assert(!src->Pointer);
assert(!dst->Pointer);
srcPtr = (ubyte *) pipe_buffer_map_range(pipe,
srcObj->buffer,
readOffset, size,
PIPE_TRANSFER_READ,
&src_transfer);
u_box_1d(readOffset, size, &box);
dstPtr = (ubyte *) pipe_buffer_map_range(pipe,
dstObj->buffer,
writeOffset, size,
PIPE_TRANSFER_WRITE,
&dst_transfer);
if (srcPtr && dstPtr)
memcpy(dstPtr + writeOffset, srcPtr + readOffset, size);
pipe_buffer_unmap(pipe, src_transfer);
pipe_buffer_unmap(pipe, dst_transfer);
pipe->resource_copy_region(pipe, dstObj->buffer, 0, writeOffset, 0, 0,
srcObj->buffer, 0, &box);
}