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Shader bug r12p1

Ivan

I've recently discovered shader sampling bug on r12p1 on S7 series. Looks visually similar to what we previously had on r7p0.

Reproducing issue

Scenario 1.

Dolphin emulator:

http://dl.dolphin-emu.org/builds/dolphin-master-5.0-600.apk

Homebrew demo:

Neo Tanks - WiiBrew

Unzip downloaded archive, in Dolphin set path to unpacked folder and choose boot.dol, swipe right to a folder icon, run boot.dol.

Screenshots:

r12p1: https://s13.postimg.io/7ca1duydz/download_20160914_002047.png

v145: https://s17.postimg.io/77mtbf2gv/download_20160914_002058.png

 

Scenario 2:

Seascape Benchmark - Android Apps on Google Play (totally black screen)

Screenshots:

r12p1: https://s15.postimg.io/k1glc3ycb/Screenshot_20160913_234123.png

v145: https://s21.postimg.io/i1ire4gvb/download_20160914_004921.png

 

Scenario 3:

REV Vehicle Demo - Android Apps on Google Play

(Missing shaders)

Screenshots:

r12p1: https://s11.postimg.io/jbivi1n9f/download_20160914_002118.png

https://s17.postimg.io/chb8p9rin/download_20160914_002120.png

v145: https://s17.postimg.io/xawj9qvzz/download_20160914_002111.png

https://s10.postimg.io/fejl93v49/download_20160914_002114.png

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    The issue with the REV Vehicle Demo seems to be that the application seems to be assuming that the extension GL_AMD_compressed_ATC_texture is available; it's not on Mali which means some texture samplers are just returning the OpenGL ES standard error color (black, with fully transparent alpha channel).

    I doubt this one is a regression; it would never have worked on Mali as we have never supported this texture format.

    Cheers,
    Pete

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  • 0

    The issue with the REV Vehicle Demo seems to be that the application seems to be assuming that the extension GL_AMD_compressed_ATC_texture is available; it's not on Mali which means some texture samplers are just returning the OpenGL ES standard error color (black, with fully transparent alpha channel).

    I doubt this one is a regression; it would never have worked on Mali as we have never supported this texture format.

    Cheers,
    Pete

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