private void SetupNonMultisampled()
{
// Generate FBO
if (this.handleMainFBO == 0)
{
GL.GenFramebuffers(1, out this.handleMainFBO);
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, this.handleMainFBO);
// Attach textures
int oglWidth = 0;
int oglHeight = 0;
for (int i = 0; i < this.targetInfos.Count; i++)
{
NativeTexture tex = this.targetInfos[i].Target;
FramebufferSlot attachment = (FramebufferSlot)((int)FramebufferSlot.ColorAttachment0 + i);
GL.FramebufferTexture2D(
FramebufferTarget.Framebuffer,
attachment,
TextureTarget.Texture2D,
tex.Handle,
0);
oglWidth = tex.Width;
oglHeight = tex.Height;
}
// Generate or delete depth renderbuffer
if (this.depthBuffer)
{
if (this.handleDepthRBO == 0)
{
GL.GenRenderbuffers(1, out this.handleDepthRBO);
}
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, this.handleDepthRBO);
GL.RenderbufferStorage(RenderbufferTarget.Renderbuffer, RenderbufferInternalFormat.DepthComponent24, oglWidth, oglHeight);
GL.FramebufferRenderbuffer(FramebufferTarget.Framebuffer, FramebufferSlot.DepthAttachment, RenderbufferTarget.Renderbuffer, this.handleDepthRBO);
}
else
{
GL.FramebufferRenderbuffer(FramebufferTarget.Framebuffer, FramebufferSlot.DepthAttachment, RenderbufferTarget.Renderbuffer, 0);
if (this.handleDepthRBO != 0)
{
GL.DeleteRenderbuffers(1, ref this.handleDepthRBO);
}
this.handleDepthRBO = 0;
}
// Check status
FramebufferErrorCode status = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
if (status != FramebufferErrorCode.FramebufferComplete)
{
throw new BackendException(string.Format("Incomplete Framebuffer: {0}", status));
}
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, 0);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
}
void DeleteFBOAttachment(FramebufferSlot attachment)
{
int param = 0;
int objName = 0;
GL.GetFramebufferAttachmentParameter(FramebufferTarget.Framebuffer, attachment,
FramebufferParameterName.FramebufferAttachmentObjectType,
out param);
if((int)RenderbufferTarget.Renderbuffer == param)
{
GL.GetFramebufferAttachmentParameter(FramebufferTarget.Framebuffer, attachment,
FramebufferParameterName.FramebufferAttachmentObjectName,
out param);
objName = param;
GL.DeleteRenderbuffers(1, ref objName);
}
else if((int)All.Texture == param)
{
GL.GetFramebufferAttachmentParameter(FramebufferTarget.Framebuffer, attachment,
FramebufferParameterName.FramebufferAttachmentObjectName,
out param);
objName = param;
GL.DeleteTextures(1, ref objName);
}
}
