public void update(float timeSec, int mouseX, int mouseY, bool leftButton, int width, int height)
{
surface = GLTools.Texture.Resize(ref surface, width, height);
surface.BeginUpdate();
var resolution = new Vector2(width, height);
GL.Viewport(0, 0, width, height);
shader.Begin();
GL.Uniform1(shader.GetUniformLocation("iGlobalTime"), timeSec);
GL.Uniform2(shader.GetUniformLocation("iResolution"), resolution);
GL.Uniform3(shader.GetUniformLocation("iMouse"), new Vector3(mouseX, mouseY, leftButton ? 1.0f : 0.0f));
GL.Clear(ClearBufferMask.ColorBufferBit);
GL.BindVertexArray(bufferQuad);
GL.DrawArrays(PrimitiveType.TriangleStrip, 0, 4);
GL.BindVertexArray(0);
shader.End();
surface.EndUpdate();
}
