#include <stdexcept>
+#include <msp/gl/extensions/arb_buffer_storage.h>
#include <msp/gl/extensions/arb_direct_state_access.h>
#include <msp/gl/extensions/arb_map_buffer_range.h>
#include <msp/strings/format.h>
static Require _req_ubo(ARB_uniform_buffer_object);
}
+void Buffer::storage(unsigned sz)
+{
+ if(size>0)
+ throw invalid_operation("Buffer::storage");
+ if(sz==0)
+ throw invalid_argument("Buffer::storage");
+
+ size = sz;
+ if(ARB_buffer_storage)
+ {
+ static const int flags = GL_MAP_READ_BIT|GL_MAP_WRITE_BIT|GL_DYNAMIC_STORAGE_BIT;
+ if(ARB_direct_state_access)
+ glNamedBufferStorage(id, size, 0, flags);
+ else
+ {
+ BindRestore _bind(this, type);
+ glBufferStorage(type, size, 0, flags);
+ }
+ }
+}
+
void Buffer::set_usage(BufferUsage u)
{
// TODO OpenGL ES 2.0 doesn't support read or copy usages
usage = u;
}
-void Buffer::data(unsigned sz, const void *d)
+void Buffer::data(const void *d)
{
+ if(size==0)
+ throw invalid_operation("Buffer::data");
+
+ if(ARB_buffer_storage)
+ return sub_data(0, size, d);
+
if(ARB_direct_state_access)
- glNamedBufferData(id, sz, d, usage);
+ glNamedBufferData(id, size, d, usage);
else
{
BindRestore _bind(this, type);
- glBufferData(type, sz, d, usage);
+ glBufferData(type, size, d, usage);
}
- size = sz;
+}
+
+void Buffer::data(unsigned sz, const void *d)
+{
+ if(size==0)
+ storage(sz);
+ else if(sz!=size)
+ throw incompatible_data("Buffer::data");
+
+ data(d);
}
void Buffer::sub_data(unsigned off, unsigned sz, const void *d)