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WebRender fails to display shadows properly #10065

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matthiaskrgr opened this issue Mar 17, 2016 · 4 comments
Open

WebRender fails to display shadows properly #10065

matthiaskrgr opened this issue Mar 17, 2016 · 4 comments
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A-webrender C-has-manual-testcase C-reproduced

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@matthiaskrgr
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@matthiaskrgr matthiaskrgr commented Mar 17, 2016 

<!DOCTYPE html>

<html id="top">
    <head>
        <style>

html {
    background-color: #191919;
    color: white;
}

div {
    background-color: #333333;
    box-shadow: 4px 4px 4px black;
}

.main {
    overflow: auto; /* the artifacts disappear when I remove this */
}

code{
    background: #555555;
    box-shadow: inset 1px 1px 1px #000000;
}
        </style>
    </head>

    <body>
        <div class="main">
            <code>This is just a some text to make the line a little bit longer bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla.</code>
        </div>
    </body>
</html>

above is the normal version, below the webrender one.
webrender_bug

servo output with webrender:

compile "/home/matthias/vcs/github/servo/resources/shaders/quad.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/quad.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/blit.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/blit.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/border.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/border.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/blend.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/blend.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/filter.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/filter.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/box_shadow.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/box_shadow.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/blur.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/blur.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/mask.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/mask.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/debug_font.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/debug_font.fs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/debug_color.vs.glsl"
compile "/home/matthias/vcs/github/servo/resources/shaders/debug_color.fs.glsl"

glxinfo attached, in case it's needed.
glxinfo.txt
@frewsxcv
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@frewsxcv frewsxcv commented Mar 17, 2016

Not suggesting this should be closed, but there are currently a bunch of box-shadow issues open in the webrender repository:

https://github.com/servo/webrender/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aopen+box+shadow+

I haven't done any investigating to see if any of them are specifically related to your issue
@matthiaskrgr
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@matthiaskrgr matthiaskrgr commented Mar 17, 2016

Ok, I only searched https://github.com/servo/servo/issues so I didn't find tickets that appeared to be directly related.
@nox
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@nox nox commented Oct 1, 2017

This is still true.
@atouchet
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@atouchet atouchet commented May 2, 2020

This appears to be looking better now:

Screenshot
@atouchet atouchet changed the title webrender fails to display shadows properly WebRender fails to display shadows properly May 2, 2020
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