Alter the working logic of Bufferable to avoid some problems

[libs/gl.git] / source / uniformblock.cpp

diff --git a/source/uniformblock.cpp b/source/uniformblock.cpp
index 2b9a135c0d8b61d9dd545c4aefeccd603f39fbf7..6ea0d320c5b50d1f9e5cf352a0dd78871465b879 100644 (file)
--- a/source/uniformblock.cpp
+++ b/source/uniformblock.cpp
@@ -12,14 +12,34 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-UniformBlock::UniformBlock()
+UniformBlock::UniformBlock():
+       buf_range(0)
 { }
 
 UniformBlock::UniformBlock(unsigned s):
        size(s),
-       data(size)
+       data(size),
+       buf_range(0)
 { }
 
+UniformBlock::~UniformBlock()
+{
+       delete buf_range;
+}
+
+void UniformBlock::offset_changed()
+{
+       delete buf_range;
+       buf_range = 0;
+}
+
+void UniformBlock::upload_data() const
+{
+       if(!buf_range)
+               buf_range = new BufferRange(*buffer, buffer_offset, size);
+       buf_range->data(&data[0]);
+}
+
 void UniformBlock::attach(int index, const Uniform &uni)
 {
        uniforms[index] = &uni;
@@ -43,11 +63,7 @@ void UniformBlock::apply(int index) const
        if(buffer)
        {
                if(dirty)
-               {
                        update_buffer_data();
-                       if(!buf_range)
-                               buf_range = new BufferRange(*buffer, buffer_offset, size);
-               }
                buf_range->bind_to(UNIFORM_BUFFER, index);
        }
        else