Open Radar

 
Summary:
Core Image fails to render RAW images with Metal (CIRawFilter, Mac) on first try, crashes on second.

Steps to Reproduce:
- load an image with CIRawFilter
- render it to a Metal texture with the following API:
[CIContext render:im toMTLTexture:texture commandBuffer:nil bounds:extent colorSpace:HYRenderContext.defaultWorkingColorSpace];

Expected Results:
- image contents renders to the texture

Actual Results:
- first try, black image in the target texture + it outputs this to the console:
"need a swizzler so that RGB16 can be read."
- second try, it crashes with the following stack trace:
#0	0x00007fff98987f3d in objc_retain ()
#1	0x000000010108dbce in -[MTLDebugComputeCommandEncoder setTexture:atIndex:] ()
#2	0x00007fff9343897f in CIMetalRenderToTexture ()
#3	0x00007fff9342a107 in CI::MetalContext::quad(void const*, dispatch_group_s*, void const*) ()
#4	0x00007fff9342b3f0 in CI::MetalContext::render_node(CI::ProgramNode*, CGRect const&, CI::Texture, bool) ()
#5	0x00007fff9342ba32 in CI::MetalContext::render_intermediate_node(CI::ProgramNode*, CGRect const&, CI::intermediate_t*, void () block_pointer) ()
#6	0x00007fff933471f0 in CI::Context::recursive_render(CI::Node*, CGRect const&, CI::Node*) ()
#7	0x00007fff9334711b in CI::Context::recursive_render(CI::Node*, CGRect const&, CI::Node*) ()
#8	0x00007fff9334711b in CI::Context::recursive_render(CI::Node*, CGRect const&, CI::Node*) ()
#9	0x00007fff9334711b in CI::Context::recursive_render(CI::Node*, CGRect const&, CI::Node*) ()
#10	0x00007fff9334711b in CI::Context::recursive_render(CI::Node*, CGRect const&, CI::Node*) ()
#11	0x00007fff9334711b in CI::Context::recursive_render(CI::Node*, CGRect const&, CI::Node*) ()
#12	0x00007fff9335ee31 in ___ZN2CIL13_image_renderEPKcPNS_7ContextEPNS_5ImageE6CGRectP12CGColorSpaceNS_11PixelFormatEmRK7CGPointRKNS_12swizzle_infoE_block_invoke ()
#13	0x00007fff93359513 in CI::tile_node_graph(CI::Context*, char const*, CI::Node*, CGRect, void (CI::Node*, CGRect) block_pointer) ()
#14	0x00007fff9335901e in CI::tile_node_graph(CI::Context*, char const*, CI::Node*, CGRect, void (CI::Node*, CGRect) block_pointer) ()
#15	0x00007fff93355c55 in CI::_image_render(char const*, CI::Context*, CI::Image*, CGRect, CGColorSpace*, CI::PixelFormat, unsigned long, CGPoint const&, CI::swizzle_info const&) ()
#16	0x00007fff93356013 in CI::image_render_to_texture(CI::Context*, CI::Image*, CGRect, CGColorSpace*, CI::Texture, CI::PixelFormat, bool, void const*) ()
#17	0x00007fff9333bf77 in -[CIContext render:toMTLTexture:commandBuffer:bounds:colorSpace:] ()
#18	0x0000000100082da3 in __34-[HYMetalRenderContext loadImage:]_block_invoke at xxxx.m:112



Regression:
Always occurs


Notes:
Multiple RAW formats were tried (Nikon .NEF, Canon .CR2, etc) with same results. I'm attaching a sample .NEF for reference.