public FramebufferManager(int Width, int Height, FramebufferManagerMode mode = FramebufferManagerMode.COLOR_BUFFER)
{
width = Width;
height = Height;
GL.GenFramebuffers(1, out frameBuffer);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBuffer);
GenerateBuffer(mode);
if (GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer) != FramebufferErrorCode.FramebufferComplete)
{
Console.WriteLine("ERROR::FRAMEBUFFER:: Framebuffer is not complete!");
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
SetupQuadMesh();
}
public void GenerateBuffer(FramebufferManagerMode mode)
{
GL.GenTextures(1, out texture);
IntPtr a = new IntPtr();
GL.BindTexture(TextureTarget.Texture2D, texture);
switch (mode)
{
case FramebufferManagerMode.COLOR_BUFFER:
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, width, height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, a);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0, TextureTarget.Texture2D, texture, 0);
uint rbo;
GL.GenRenderbuffers(1, out rbo);
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, rbo);
GL.RenderbufferStorage(RenderbufferTarget.Renderbuffer, RenderbufferStorage.Depth24Stencil8, width, height);
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, 0);
GL.FramebufferRenderbuffer(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthStencilAttachment, RenderbufferTarget.Renderbuffer, rbo);
break;
case FramebufferManagerMode.SHADOW_BUFFER:
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.DepthComponent, width, height, 0, PixelFormat.DepthComponent, PixelType.UnsignedByte, a);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)OpenTK.Graphics.OpenGL4.TextureWrapMode.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)OpenTK.Graphics.OpenGL4.TextureWrapMode.Repeat);
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthAttachment, TextureTarget.Texture2D, texture, 0);
GL.DrawBuffer(0);
GL.ReadBuffer(0);
break;
}
}
