/// <summary> Sets appropriate uniforms in the lighting shader using the stored next light ID, and increments the ID.
/// <br/> !! Warning !! This means that the lighting uniform IDs are not ensured to be consistent from frame to frame!</summary>
public override void DrawSelf()
{
if (Game.CurrentShader != Game.LightingShader)
{
return;
}
ShaderProgramLighting shader = Game.LightingShader;
shader.SetLightUniform(shader.NextLightID, Strength, Position, Color, Direction);
shader.NextLightID++;
}
/// <summary> Handles all graphics setup processing: creates shader program, drawables, sets flags, sets attribs.
/// <br/> THREAD: OpenGL </summary>
protected override void OnRenderThreadStarted()
{
Console.WriteLine("OnRenderThreadStarted(): start");
// Misc GL flags and callbacks
debugCallbackHandle = GCHandle.Alloc(debugCallback);
GL.DebugMessageCallback(debugCallback, IntPtr.Zero);
GL.Enable(EnableCap.DebugOutput);
GL.Enable(EnableCap.DebugOutputSynchronous);
GL.Enable(EnableCap.DepthTest);
VSync = VSyncMode.Off; // On seems to break?
InterfaceShader = new ShaderProgramInterface(ShaderProgram.CreateShaderFromUnified("src/InterfaceShader.glsl")).use();
GeometryShader = new ShaderProgramGeometry(ShaderProgram.CreateShaderFromUnified("src/GeometryShader.glsl")).use();
LightingShader = new ShaderProgramLighting(ShaderProgram.CreateShaderFromUnified("src/LightingShader.glsl")).use();
// Framebuffer setup for the geometry buffer
FramebufferGeometry = GL.GenFramebuffer();
GL.BindFramebuffer(FramebufferTarget.Framebuffer, FramebufferGeometry);
FramebufferTextures = new Texture[] {
new Texture(0, GL.GetUniformLocation(LightingShader.ShaderProgram_ID, "gPosition")),
new Texture(1, GL.GetUniformLocation(LightingShader.ShaderProgram_ID, "gNormal")),
new Texture(2, GL.GetUniformLocation(LightingShader.ShaderProgram_ID, "gAlbedoSpec")),
};
int depth = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, depth);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.DepthComponent24, Game.WindowSize.X, Game.WindowSize.Y,
0, PixelFormat.DepthComponent, PixelType.UnsignedByte, new byte[0]);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMinFilter.Nearest);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthAttachment,
TextureTarget.Texture2D, depth, 0);
DrawBuffersEnum[] attachments = new DrawBuffersEnum[FramebufferTextures.Length];
for (int i = 0; i < attachments.Length; i++)
{
attachments[i] = DrawBuffersEnum.ColorAttachment0 + i;
}
GL.DrawBuffers(attachments.Length, attachments);
SceneRoot = DemoBuilder.BuildDemoScene_TextureTest();
InterfaceRoot = DemoBuilder.BuildDemoInterface_IngameTest();
BackgroundRoot = DemoBuilder.BuildDemoInterface_BackgroundTest();
// Interface VAO setup
GL.BindVertexArray(InterfaceShader.VertexArrayObject_ID);
GL.EnableVertexAttribArray(0);
GL.EnableVertexAttribArray(1);
GL.VertexAttribPointer(0, 2, VertexAttribPointerType.Float, false, 4 * sizeof(float), 0 * sizeof(float)); /* xy */
GL.VertexAttribPointer(1, 2, VertexAttribPointerType.Float, false, 4 * sizeof(float), 2 * sizeof(float)); /* uv */
// Geometry VAO setup
GL.BindVertexArray(GeometryShader.VertexArrayObject_ID);
GL.EnableVertexAttribArray(0);
GL.EnableVertexAttribArray(1);
GL.EnableVertexAttribArray(2);
GL.EnableVertexAttribArray(3);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 12 * sizeof(float), 0 * sizeof(float)); /* xyz */
GL.VertexAttribPointer(1, 2, VertexAttribPointerType.Float, false, 12 * sizeof(float), 3 * sizeof(float)); /* uv */
GL.VertexAttribPointer(2, 4, VertexAttribPointerType.Float, false, 12 * sizeof(float), 5 * sizeof(float)); /* rgba */
GL.VertexAttribPointer(3, 3, VertexAttribPointerType.Float, false, 12 * sizeof(float), 9 * sizeof(float)); /* normal */
Console.WriteLine("OnRenderThreadStarted(): end");
}