X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Fbuffer.cpp;h=36ac440a54426c186c16ae238c51a337312445e8;hp=811b3e41d7cbfb9ed16e613b29a7c28674d07659;hb=HEAD;hpb=160e9eea29bd10034733d59507fa1bcca36be401

diff --git a/source/core/buffer.cpp b/source/core/buffer.cpp
index 811b3e41..36ac440a 100644
--- a/source/core/buffer.cpp
+++ b/source/core/buffer.cpp
@@ -8,11 +8,7 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-Buffer::Buffer():
-	size(0)
-{ }
-
-void Buffer::storage(unsigned sz)
+void Buffer::storage(size_t sz, BufferUsage u)
 {
 	if(size>0)
 	{
@@ -24,6 +20,7 @@ void Buffer::storage(unsigned sz)
 		throw invalid_argument("Buffer::storage");
 
 	size = sz;
+	usage = u;
 
 	allocate();
 }
@@ -33,19 +30,89 @@ void Buffer::data(const void *d)
 	return sub_data(0, size, d);
 }
 
-void Buffer::sub_data(unsigned off, unsigned sz, const void *d)
+void Buffer::sub_data(size_t off, size_t sz, const void *d)
 {
-	if(size==0)
-		throw invalid_operation("Buffer::sub_data");
-
+	check_sub_data(off, sz, "Buffer::sub_data");
 	BufferBackend::sub_data(off, sz, d);
 }
 
-void Buffer::require_size(unsigned req_sz) const
+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(func);
+	if(off>get_total_size() || off%size+sz>size)
+		throw out_of_range(func);
+}
+
+void Buffer::require_size(size_t req_sz) const
 {
 	if(size<req_sz)
 		throw buffer_too_small(format("buffer has %d bytes; %d required", size, req_sz));
 }
 
+void *Buffer::map()
+{
+	if(size==0 || !can_map() || mapped)
+		throw invalid_operation("Buffer::map");
+	void *result = BufferBackend::map();
+	mapped = true;
+	return result;
+}
+
+bool Buffer::unmap()
+{
+	if(size==0 || !can_map() || !mapped)
+		throw invalid_operation("Buffer::unmap");
+	bool result = BufferBackend::unmap();
+	mapped = false;
+	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 &Buffer::AsyncTransfer::operator=(AsyncTransfer &&other)
+{
+	if(dest_addr)
+		finalize();
+
+	buffer = other.buffer;
+	offset = other.offset;
+	size = other.size;
+	dest_addr = other.dest_addr;
+
+	other.dest_addr = 0;
+
+	return *this;
+}
+
+Buffer::AsyncTransfer::~AsyncTransfer()
+{
+	if(dest_addr)
+		finalize();
+}
+
 } // namespace GL
 } // namespace Msp