public WebGLFramebuffer(int width, int height, int colourTextures, TextureFormat textureColourFormat, TextureFormat?textureDepthFormat = null)
{
if (colourTextures < 1)
{
throw new CKGLException("WebGL 1.0 framebuffers must have 1 colour texture.");
}
if (colourTextures > 1) // WebGL 1.0 only allows 1 colour attachment
{
throw new CKGLException("WebGL 1.0 framebuffers must have 1 colour texture.");
}
if (textureColourFormat.ToWebGLPixelFormat() == GL.DEPTH_COMPONENT || textureColourFormat.ToWebGLPixelFormat() == GL.DEPTH_STENCIL)
{
throw new CKGLException("textureColourFormat cannot be a depth(stencil) texture.");
}
// WebGL 1.0 - Use Renderbuffer for depth attachment
//if (textureDepthFormat.HasValue && !(textureDepthFormat.Value.ToWebGLPixelFormat() == GL.DEPTH_COMPONENT || textureDepthFormat.Value.ToWebGLPixelFormat() == GL.DEPTH_STENCIL))
// throw new CKGLException("textureDepthFormat is not a depth(stencil) texture.");
if (textureDepthFormat.HasValue && !(textureDepthFormat.Value == TextureFormat.Depth16 || textureDepthFormat.Value == TextureFormat.Depth24 || textureDepthFormat.Value == TextureFormat.Depth24Stencil8))
{
throw new CKGLException("textureDepthFormat is not a depth(stencil) texture.");
}
this.width = width;
this.height = height;
camera2D.Width = width;
camera2D.Height = height;
id = GL.createFramebuffer();
Bind();
Textures = new Texture[1];
Textures[0] = Texture.Create2D(Width, Height, textureColourFormat);
GL.framebufferTexture2D(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, (Textures[0] as WebGLTexture).TextureTarget, (Textures[0] as WebGLTexture).ID, 0);
Textures[0].Unbind();
CheckStatus();
if (textureDepthFormat.HasValue)
{
// Depth texture implementation
//DepthStencilTexture = Texture.Create2D(Width, Height, textureDepthFormat.Value);
//GL.framebufferTexture2D(GL.FRAMEBUFFER, textureDepthFormat.Value.ToWebGLTextureAttachment(), (DepthStencilTexture as WebGLTexture).TextureTarget, (DepthStencilTexture as WebGLTexture).ID, 0);
//DepthStencilTexture.Unbind();
//CheckStatus();
// WebGL 1.0 - Use Renderbuffer for depth attachment
var depthBuffer = GL.createRenderbuffer();
GL.bindRenderbuffer(GL.RENDERBUFFER, depthBuffer);
if (textureDepthFormat.Value == TextureFormat.Depth16 || textureDepthFormat.Value == TextureFormat.Depth24)
{
GL.renderbufferStorage(GL.RENDERBUFFER, GL.DEPTH_STENCIL, Width, Height);
GL.framebufferRenderbuffer(GL.FRAMEBUFFER, GL.DEPTH_STENCIL_ATTACHMENT, GL.RENDERBUFFER, depthBuffer);
}
else if (textureDepthFormat.Value == TextureFormat.Depth24Stencil8)
{
GL.renderbufferStorage(GL.RENDERBUFFER, GL.DEPTH_COMPONENT16, Width, Height);
GL.framebufferRenderbuffer(GL.FRAMEBUFFER, GL.DEPTH_ATTACHMENT, GL.RENDERBUFFER, depthBuffer);
}
CheckStatus();
}
}