public void SelectShader(ShaderProgram program)
{
if (!FrameStarted)
{
throw new InvalidOperationException("Cannot select a Shader program when no frame is currently started on the GPU.");
}
ActiveShaderProgram = program;
Gl.UseProgram(program.ProgramId);
}
protected override void Renderer_Draw(RenderThread sender, FrameStageEventArgs args)
{
Log.WriteLine("Renderer_Draw(%@)", LogLevel.Message, args.CurrentTime.FrameIndex);
Gl.BindVertexArray(VAO);
CheckGlErrors("Renderer_Draw:BindVAO");
Gl.ClearColor(0.2f, 0.3f, 0.3f, 1.0f);
Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
CheckGlErrors("Renderer_Draw:Clear");
Gl.UseProgram(shader.ProgramId);
CheckGlErrors("Renderer_Draw:UseProgram");
Gl.DrawElements(PrimitiveType.Triangles, 6, DrawElementsType.UnsignedInt, 0);
CheckGlErrors("Renderer_Draw:DrawElements");
}
