added code to deal with #extension for shader, added int64 and uint64 support

2017-01-13 09:33:49 -06:00
parent fee45b7c46
commit 18369bed2d
3 changed files with 200 additions and 3 deletions
--- a/src/osg/State.cpp
+++ b/src/osg/State.cpp
@@ -1226,6 +1226,13 @@ bool State::convertVertexShaderSourceToOsgBuiltIns(std::string& source) const
        declPos = 0;
    }

+    std::string::size_type extPos = source.rfind( "#extension " );
+    if ( extPos != std::string::npos )
+    {
+        // found the string, now find the next linefeed and set the insertion point after it.
+        declPos = source.find( '\n', extPos );
+        declPos = declPos != std::string::npos ? declPos+1 : source.length();
+    }
    if (_useModelViewAndProjectionUniforms)
    {
        // replace ftransform as it only works with built-ins