X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Fbuffer.cpp;h=b6f2e44b9e55555bebcfa08b80bf1ffeadb4a3c5;hp=ed0c552360ac8fad2345236e2024d17455200334;hb=c356a20547afae97b412da36e0b0a7d51e879401;hpb=7d221b1fd6194e59bc0783740a2a17ac71fa4da5

diff --git a/source/core/buffer.cpp b/source/core/buffer.cpp
index ed0c5523..b6f2e44b 100644
--- a/source/core/buffer.cpp
+++ b/source/core/buffer.cpp
@@ -31,13 +31,23 @@ void Buffer::data(const void *d)
 }
 
 void Buffer::sub_data(size_t off, size_t sz, const void *d)
+{
+	check_sub_data(off, sz, "Buffer::sub_data");
+	BufferBackend::sub_data(off, sz, d);
+}
+
+Buffer::AsyncTransfer Buffer::sub_data_async(size_t off, size_t sz)
+{
+	check_sub_data(off, sz, "Buffer::sub_data_async");
+	return AsyncTransfer(*this, off, sz);
+}
+
+void Buffer::check_sub_data(size_t off, size_t sz, const char *func)
 {
 	if(size==0)
-		throw invalid_operation("Buffer::sub_data");
+		throw invalid_operation(func);
 	if(off>get_total_size() || off%size+sz>size)
-		throw out_of_range("Buffer::sub_data");
-
-	BufferBackend::sub_data(off, sz, d);
+		throw out_of_range(func);
 }
 
 void Buffer::require_size(size_t req_sz) const
@@ -64,5 +74,30 @@ bool Buffer::unmap()
 	return result;
 }
 
+
+Buffer::AsyncTransfer::AsyncTransfer(Buffer &b, size_t o, size_t s):
+	buffer(b),
+	offset(o),
+	size(s),
+	dest_addr(0)
+{
+	allocate();
+}
+
+Buffer::AsyncTransfer::AsyncTransfer(AsyncTransfer &&other):
+	buffer(other.buffer),
+	offset(other.offset),
+	size(other.size),
+	dest_addr(other.dest_addr)
+{
+	other.dest_addr = 0;
+}
+
+Buffer::AsyncTransfer::~AsyncTransfer()
+{
+	if(dest_addr)
+		finalize();
+}
+
 } // namespace GL
 } // namespace Msp