233825 2021-12-03 10:21:37 -0800 https://oskarstalberg.com/Townscaper/ is slower than it should be 2021-12-10 10:22:18 -0800 1 1 1 Unclassified WebKit WebGL WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 220896 223434 1 kkinnunen webkit-unassigned dino geofflang gman jonahr kbr kkinnunen kpiddington webkit-bug-importer oldest_to_newest 1820202 0 kkinnunen 2021-12-03 10:21:37 -0800 https://oskarstalberg.com/Townscaper/ is slower than it should be 1820203 1 kkinnunen 2021-12-03 10:22:11 -0800 Seems to spend most of its time in initialising blited-to textures: Sample Count, Samples %, Normalized CPU %, Symbol 4981, 17.7%, 3.1%, WebCore::jsWebGL2RenderingContextPrototypeFunction_blitFramebuffer(JSC::JSGlobalObject*, JSC::CallFrame*) (in WebCore) 4981, 17.7%, 3.1%, WebCore::GraphicsContextGLOpenGL::blitFramebuffer(int, int, int, int, int, int, int, int, unsigned int, unsigned int) (in WebCore) 4981, 17.7%, 3.1%, gl::BlitFramebuffer(int, int, int, int, int, int, int, int, unsigned int, unsigned int) (in libANGLE-shared.dylib) 4981, 17.7%, 3.1%, gl::Context::blitFramebuffer(int, int, int, int, int, int, int, int, unsigned int, unsigned int) (in libANGLE-shared.dylib) 4981, 17.7%, 3.1%, gl::Context::syncState(angle::IterableBitSet<63ul> const&, angle::BitSetT<12ul, unsigned int, unsigned long> const&, gl::Command) (in libANGLE-shared.dylib) 4952, 17.6%, 3.1%, gl::Framebuffer::ensureDrawAttachmentsInitialized(gl::Context const*) (in libANGLE-shared.dylib) 4952, 17.6%, 3.1%, gl::(anonymous namespace)::InitAttachment(gl::Context const*, gl::FramebufferAttachment*) (in libANGLE-shared.dylib) 4952, 17.6%, 3.1%, gl::FramebufferAttachment::initializeContents(gl::Context const*) (in libANGLE-shared.dylib) 4952, 17.6%, 3.1%, rx::TextureMtl::initializeContents(gl::Context const*, gl::ImageIndex const&) (in libANGLE-shared.dylib) 4930, 17.5%, 3.0%, rx::mtl::InitializeTextureContents(gl::Context const*, std::__1::shared_ptr<rx::mtl::Texture> const&, rx::mtl::Format const&, rx::mtl::ImageNativeIndex const&) (in libANGLE-shared.dylib) 4921, 17.5%, 3.0%, rx::mtl::Texture::replaceRegion(rx::ContextMtl*, MTLRegion const&, gl::LevelIndexWrapper<unsigned int> const&, unsigned int, unsigned char const*, unsigned long, unsigned long) (in libANGLE-shared.dylib) 1820283 2 kbr 2021-12-03 13:06:41 -0800 Wonder whether this may have already been addressed upstream in ANGLE. Let's let the mega ANGLE upgrade in Bug 220896 land and see whether this still reproduces. If it hasn't been, let's definitely skip initialization when overwriting the complete destination texture. Will that address this issue? 1822786 3 webkit-bug-importer 2021-12-10 10:22:18 -0800 <rdar://problem/86328437>