Method SetupVBO

src/SFGUI/Canvas.cpp:589–608

}

void Canvas::SetupVBO() {
	if( m_vbo ) {
		return;
	}

	CheckGLError( GLEXT_glGenBuffers( 1, &m_vbo ) );
	CheckGLError( GLEXT_glBindBuffer( GLEXT_GL_ARRAY_BUFFER, m_vbo ) );

	// GL_TRIANGLE_STRIP
	GLbyte data[] = {
		1, 1, 1, 1,
		-1, 1, 0, 1,
		1, -1, 1, 0,
		-1, -1, 0, 0
	};

	CheckGLError( GLEXT_glBufferData( GLEXT_GL_ARRAY_BUFFER, sizeof( data ), data, GLEXT_GL_STATIC_DRAW ) );

	CheckGLError( GLEXT_glBindBuffer( GLEXT_GL_ARRAY_BUFFER, 0 ) );
}

void Canvas::SetupVAO() {
	CheckGLError( GLEXT_glGenVertexArrays( 1, &m_vao ) );