Texture is loaded with top-down image data.
But following code is show me the fliped image.
Left-bottom = (0, 0), Right-top = (1,1) is dead in 2D rendering?
glBegin( GL_TRIANGLE_STRIP );
glTexCoord2f( 0, 1 ); glVertex2f( 0, 0 );
glTexCoord2f( 0, 0 ); glVertex2f( 0, 256 );
glTexCoord2f( 1, 1 ); glVertex2f( 256, 0 );
glTexCoord2f( 1, 0 ); glVertex2f( 256, 256 );
glEnd();/