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libimg (some funcs) does not EMMS => float/double variables corruption #98

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opened 2025-02-23 10:16:46 +01:00 by rgimad · 0 comments
rgimad commented 2025-02-23 10:16:46 +01:00
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img_blend (and maybe others) functions in libimg does not do EMMS after using mmx. So after you call such funcs in your C/C++ etc. program variables of type double become nan garbage. I faced this bug while i worked on my dino game and currenly use this workaround

graphics.c Line 66 in 7c04f4018c
asm_inline("emms");
. It would be good to solve this issue in library itself

img_blend (and maybe others) functions in libimg does not do EMMS after using mmx. So after you call such funcs in your C/C++ etc. program variables of type double become nan garbage. I faced this bug while i worked on my dino game and currenly use this workaround https://git.kolibrios.org/rgimad/dino/src/commit/7c04f4018cac95f860410ea7321f0bca05494d44/graphics.c#L66 . It would be good to solve this issue in library itself
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dunkaist self-assigned this 2025-02-23 23:00:33 +01:00
dunkaist added reference main 2025-02-24 03:51:22 +01:00
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Reference: KolibriOS/kolibrios#98
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