Index: trunk/src/gl/gl_context.cc
===================================================================
--- trunk/src/gl/gl_context.cc	(revision 485)
+++ trunk/src/gl/gl_context.cc	(revision 487)
@@ -216,5 +216,5 @@
 			glBindBufferBase( buffer_type_to_enum( info->type ), index, info->glid );
 		else
-			glBindBufferRange( buffer_type_to_enum( info->type ), index, info->glid, offset, size );
+			glBindBufferRange( buffer_type_to_enum( info->type ), index, info->glid, static_cast<GLintptr>( offset ), static_cast<GLsizeiptr>( size ) );
 	}
 }
@@ -790,5 +790,5 @@
 		else
 		{
-			glDrawArrays( primitive_to_enum(prim), first, static_cast<GLsizei>( count ) );
+			glDrawArrays( primitive_to_enum(prim), static_cast<GLint>( first ), static_cast<GLsizei>( count ) );
 		}
 		unbind( va );
Index: trunk/src/gl/gl_device.cc
===================================================================
--- trunk/src/gl/gl_device.cc	(revision 485)
+++ trunk/src/gl/gl_device.cc	(revision 487)
@@ -358,6 +358,6 @@
 	if ( info )
 	{
-		int result = glGetUniformBlockIndex( info->glid, name.data() );
-		if ( result >= 0 ) return result;
+		GLuint result = glGetUniformBlockIndex( info->glid, name.data() );
+		if ( result != GL_INVALID_INDEX ) return static_cast<int>( result );
 		if ( fatal )
 		{
@@ -427,18 +427,19 @@
 		if ( ubase->is_dirty() )
 		{
-			int uloc = ubase->get_location();
+			GLint   uloc = ubase->get_location();
+			GLsizei size = static_cast<GLsizei>( ubase->get_length() );
 			switch( ubase->get_type() )
 			{
-			case FLOAT          : glUniform1fv( uloc, ubase->get_length(), static_cast< uniform< enum_to_type< FLOAT >::type >*>( ubase )->get_value() ); break;
-			case INT            : glUniform1iv( uloc, ubase->get_length(), static_cast< uniform< enum_to_type< INT >::type >*>( ubase )->get_value() ); break;
-			case FLOAT_VECTOR_2 : glUniform2fv( uloc, ubase->get_length(), reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_2 >::type >*>( ubase )->get_value())); break;
-			case FLOAT_VECTOR_3 : glUniform3fv( uloc, ubase->get_length(), reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_3 >::type >*>( ubase )->get_value())); break;
-			case FLOAT_VECTOR_4 : glUniform4fv( uloc, ubase->get_length(), reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_4 >::type >*>( ubase )->get_value())); break;
-			case INT_VECTOR_2   : glUniform2iv( uloc, ubase->get_length(), reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_2 >::type >*>( ubase )->get_value())); break;
-			case INT_VECTOR_3   : glUniform3iv( uloc, ubase->get_length(), reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_3 >::type >*>( ubase )->get_value())); break;
-			case INT_VECTOR_4   : glUniform4iv( uloc, ubase->get_length(), reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_4 >::type >*>( ubase )->get_value())); break;
-			case FLOAT_MATRIX_2 : glUniformMatrix2fv( uloc, ubase->get_length(), GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_2 >::type >*>( ubase )->get_value())); break;
-			case FLOAT_MATRIX_3 : glUniformMatrix3fv( uloc, ubase->get_length(), GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_3 >::type >*>( ubase )->get_value())); break;
-			case FLOAT_MATRIX_4 : glUniformMatrix4fv( uloc, ubase->get_length(), GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_4 >::type >*>( ubase )->get_value())); break;
+			case FLOAT          : glUniform1fv( uloc, size, static_cast< uniform< enum_to_type< FLOAT >::type >*>( ubase )->get_value() ); break;
+			case INT            : glUniform1iv( uloc, size, static_cast< uniform< enum_to_type< INT >::type >*>( ubase )->get_value() ); break;
+			case FLOAT_VECTOR_2 : glUniform2fv( uloc, size, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_2 >::type >*>( ubase )->get_value())); break;
+			case FLOAT_VECTOR_3 : glUniform3fv( uloc, size, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_3 >::type >*>( ubase )->get_value())); break;
+			case FLOAT_VECTOR_4 : glUniform4fv( uloc, size, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_VECTOR_4 >::type >*>( ubase )->get_value())); break;
+			case INT_VECTOR_2   : glUniform2iv( uloc, size, reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_2 >::type >*>( ubase )->get_value())); break;
+			case INT_VECTOR_3   : glUniform3iv( uloc, size, reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_3 >::type >*>( ubase )->get_value())); break;
+			case INT_VECTOR_4   : glUniform4iv( uloc, size, reinterpret_cast<const GLint*>( static_cast< uniform< enum_to_type< INT_VECTOR_4 >::type >*>( ubase )->get_value())); break;
+			case FLOAT_MATRIX_2 : glUniformMatrix2fv( uloc, size, GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_2 >::type >*>( ubase )->get_value())); break;
+			case FLOAT_MATRIX_3 : glUniformMatrix3fv( uloc, size, GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_3 >::type >*>( ubase )->get_value())); break;
+			case FLOAT_MATRIX_4 : glUniformMatrix4fv( uloc, size, GL_FALSE, reinterpret_cast<const GLfloat*>( static_cast< uniform< enum_to_type< FLOAT_MATRIX_4 >::type >*>( ubase )->get_value())); break;
 			default : break; // error?
 			}
@@ -507,5 +508,5 @@
 		}
 
-		uniform_base* u = uniform_base::create( utype, uni_loc, uni_len );
+		uniform_base* u = uniform_base::create( utype, uni_loc, size_t( uni_len ) );
 		NV_ASSERT( u, "Unknown uniform type!" );
 		(*p->m_uniform_map)[ name ] = u;