On Thursday, 2 June 2016 at 00:52:48 UTC, ZILtoid1991 wrote:
On Thursday, 2 June 2016 at 00:51:15 UTC, ZILtoid1991 wrote:
I could get the code working with a bug after replacing
pmulhuw with pmullw, but due to integer overflow I get a
glitched image. I try to get around the fact that pmulhuw
stores the high bits of the result either with multiplication
or with bit shifting.
I forgot to mention that I had to make pointers for the arrays
I used in order to be able to load them.
I'm not familiar with the MMX instruction set, however glancing
at the source again I notice the const registers are (of course)
arrays. Those two where you're loading the constants you should
probably create/convert the pointers as appropriate, or if they
are an Enum value I think they will be dropped in and work fine.
(the value being 0x0100_0100_0100_0100 and 0x0001_0001_0001_0001
I believe, based on the short layout).
Maybe you already had that solved or the compiler does something
I don't know...
