X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Funiformblock.cpp;h=cc8945cf2093358d7df19ccebfe5e92ee9fffa61;hp=2b9a135c0d8b61d9dd545c4aefeccd603f39fbf7;hb=bec07999d95b76f4b47cffcc564d0cd0afc0435e;hpb=8eb9a8d90e5597154dab666481037b306b7bbca2

diff --git a/source/uniformblock.cpp b/source/uniformblock.cpp
index 2b9a135c..cc8945cf 100644
--- a/source/uniformblock.cpp
+++ b/source/uniformblock.cpp
@@ -1,4 +1,6 @@
 #include <stdexcept>
+#include <msp/gl/extensions/arb_shader_objects.h>
+#include <msp/gl/extensions/arb_uniform_buffer_object.h>
 #include "buffer.h"
 #include "color.h"
 #include "error.h"
@@ -12,42 +14,70 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-UniformBlock::UniformBlock()
-{ }
+UniformBlock::UniformBlock():
+	size(0),
+	buf_range(0)
+{
+	static Require _req(ARB_shader_objects);
+}
 
 UniformBlock::UniformBlock(unsigned s):
 	size(s),
-	data(size)
-{ }
+	buf_range(0)
+{
+	static Require _req(ARB_uniform_buffer_object);
+
+	if(!size)
+		throw invalid_argument("UniformBlock::UniformBlock");
+	data.resize(size);
+}
+
+UniformBlock::~UniformBlock()
+{
+	delete buf_range;
+}
+
+unsigned UniformBlock::get_alignment() const
+{
+	return BufferRange::get_uniform_buffer_alignment();
+}
+
+void UniformBlock::location_changed(Buffer *buf, unsigned off, unsigned) const
+{
+	delete buf_range;
+	buf_range = new BufferRange(*buf, off, size);
+}
 
 void UniformBlock::attach(int index, const Uniform &uni)
 {
+	if(size)
+		throw invalid_operation("UniformBlock::attach");
+
 	uniforms[index] = &uni;
 }
 
 void UniformBlock::attach(const Program::UniformInfo &info, const Uniform &uni)
 {
-	uniforms[info.location] = &uni;
-	if(buffer)
+	if(size)
 	{
 		uni.store(info, &data[info.location]);
 		dirty = true;
 	}
+	else
+		uniforms[info.location] = &uni;
 }
 
 void UniformBlock::apply(int index) const
 {
-	if((index>=0) != (buffer!=0))
+	if((index>=0) != (size>0))
 		throw invalid_operation("UniformBlock::apply");
 
-	if(buffer)
+	if(size)
 	{
-		if(dirty)
-		{
-			update_buffer_data();
-			if(!buf_range)
-				buf_range = new BufferRange(*buffer, buffer_offset, size);
-		}
+		if(!get_buffer())
+			throw invalid_operation("UniformBlock::apply");
+
+		refresh();
 		buf_range->bind_to(UNIFORM_BUFFER, index);
 	}
 	else