It's true that Dolphin doesn't come with any games / applications pre-installed.

But this is basically a bug report aimed to Intel HD DirectX driver development team, I hope these forums reach the people whom this concerns. I contacted Intel support via normal support 'form', but I was told that open source software isn't covered by Intel Customer Support. or older drivers) and D3D backend (OpenGL is glitchless).Īn example of the glitches can be found at. As said, this happens only with Intel HD (latest 10. This suggests that some bitwise operations fail under some circumstances, and developers strongly suspect Intel driver problem.

A developer of Dolphin found out that the glitches disappear, if the bit shift >7 in the formula (see the GitHub link above) is replaced with conditional ternary operator >= 128 ? 1 : 0, although they should give identical results here. The Dolphin TEV color combiner has a new formula since 4.0-1288, and one of the changes was to remove integer division from the equation and use bit shifting instead. The Dolphin code introduced a new color / alpha combiner formula (link to culprit Git commit: ) in March 2014, and while the formula should be accurate in terms of emulation, it brought up these glitches. These have only been reported on Intel HD 4000/4600, and are not reproducible on AMD or NVIDIA GPUs Shortly after the release of developement version 4.0-1288 Intel HD users saw small multicolor glitches on some (not all) 3d objects. The program supports both OpenGL and Direct3D backends.

The issue was found when a program named Dolphin (a open source game console emulator, found at ) was updated earlier in March 2014. This problem concerns Intel HD drivers, specifically DirectX drivers.

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