- took DCanvas and all its subtypes out of the DObject tree.

I have no idea why they were even in there, as they intentionally circumvented all GC related features - they declared themselves fixed if prone to getting collected, they all used OF_YesReallyDelete when destroying themselves and they never used any of the object creation or RTTI features, aside from a single assert in V_Init2.

Essentially they were a drag on the system and OF_YesReallyDelete was effectively added just to deal with the canvases which were DObjects but not supposed to behave like them in the first place.

src/gl/system/gl_swframebuffer.cpp

@@ -113,8 +113,6 @@ DFrameBuffer *CreateGLSWFrameBuffer(int width, int height, bool bgra, bool fulls
 }
 #endif
 
-IMPLEMENT_CLASS(OpenGLSWFrameBuffer, false, false)
-
 const char *const OpenGLSWFrameBuffer::ShaderDefines[OpenGLSWFrameBuffer::NUM_SHADERS] =
 {
 	"#define ENORMALCOLOR", // NormalColor