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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Euro Truck Simulator 2 crashes when changing graphics settings with mesa 17.3.0, but not with 17.0.7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102316#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Euro Truck Simulator 2 crashes when changing graphics settings with mesa 17.3.0, but not with 17.0.7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102316">bug 102316</a>
from <span class="vcard"><a class="email" href="mailto:andriy.khulap@globallogic.com" title="Andriy Khulap <andriy.khulap@globallogic.com>"> <span class="fn">Andriy Khulap</span></a>
</span></b>
<pre>When changing graphics settings, this game calls glXChooseFBConfig() function
with the following attributes:
tag=32785 val=1 GLX_RENDER_TYPE
tag=32786 val=1 GLX_X_RENDERABLE
tag=5 val=1 GLX_DOUBLEBUFFER
tag=12 val=24 GLX_DEPTH_SIZE
tag=13 val=8 GLX_STENCIL_SIZE
tag=8 val=8 GLX_RED_SIZE
tag=9 val=8 GLX_GREEN_SIZE
tag=10 val=8 GLX_BLUE_SIZE
tag=11 val=8 GLX_ALPHA_SIZE
tag=8370 val=1 GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT
glXGetFBConfigs() returns 88 possible configurations in my case, but they all
not sRGB-cabable (.sRGBCapable=0). So they all considered incompatible and
glXChooseFBConfig() returns NULL and zero list size.
Next, function glXChooseVisual() is called with the following attributes:
tag=1 val=4 GLX_USE_GL
tag=4 val=5 GLX_RGBA
tag=5 val=12 GLX_DOUBLEBUFFER
tag=12 val=24 GLX_DEPTH_SIZE
tag=13 val=8 GLX_STENCIL_SIZE
tag=8 val=8 GLX_RED_SIZE
tag=9 val=8 GLX_GREEN_SIZE
tag=10 val=8 GLX_BLUE_SIZE
tag=11 val=8 GLX_ALPHA_SIZE
tag=8370 val=0 GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT
With sRGBCapable=0 it returns valid XVisualInfo*:
visualList=0xcb30d10
visualList->visual=0x368bca0
visualList->visualid=32
visualList->screen=0
visualList->depth=24
visualList->class=4
visualList->red_mask=ff0000
visualList->green_mask=ff00
visualList->blue_mask=ff
visualList->colormap_size=256
visualList->bits_per_rgb=8
But the game crashes after this.
Without the check from 6e06e281c6ee (MATCH_DONT_CARE(sRGBCapable);), the
glXChooseFBConfig() function returns 14 compatible configurations and game
operates normally.</pre>
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