crash while stroking rect with clip translate combo

[Wiladams]

crash while stroking rect with clip translate combo

[Wiladams]

Narrowing it down further, it definitely seems to be something right around the border, when the stroke rectangle is crossing over the limit of the bitmap. Windows 10 (64-bit OS), blend2d built as 32-bit.

local function main()
    local x = 390
    local y = 10
    local width = 100
    local height = 100

    -- setup context
    local img = BLImage()
    blapi.blImageInitAs(img, 400, 400, C.BL_FORMAT_PRGB32)
    local ctx = BLContext()
    blapi.blContextInitAs(ctx, img, nil)

    local recti = BLRectI({x,y,width,height})
    print("blContextClipToRectI: ", blapi.blContextClipToRectI(ctx, recti)) ;


    translate(ctx, x, y)

    --local srecti = BLRectI(0,0,width,height)
    local srecti = ffi.new("BLRectI")
    srecti.x = 0;
    srecti.y = 0;

    srecti.h = 10;
    -- will NOT crash
    --srecti.w = 13;
    -- WILL crash
    srecti.w = 14;

    blapi.blContextStrokeRectI(ctx, srecti)
end

[Wiladams]

still working it. I can get it to NOT crash in another circumstance by rearranging code, so I'm back to thinking it might be a LuaJIT interaction.

[Wiladams]

Rearranged code, got as raw as possible

    -- will NOT crash
    --srecti.w = 14;

    -- WILL crash
    srecti.w = 15;

Can still reliably reproduce a crash. I guess next thing is to use C instead of Lua to completely eliminate that as a possibility, and crack out the debugger to figure out where it's actually crashing.

[kobalicek]

Should be fixed by b27e2b2 - Thanks for the report!

[Wiladams]

fixes the crash, but introduces new challenges. Now, when I setup a clip, then draw beyond, all subsequent drawing after that will not occur, until a clearAll().

[Wiladams]

as a proof point that this issue has been fixed, several examples of complex clipping that previous showed challenges