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https://gitlab.freedesktop.org/wlroots/wlroots.git
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89c9ef6692
Currently, the glslang check is run every time ninja is invoked, even with an up-to-date build directory when GLSL shaders haven't been modified. This is due to glslang not creating any output file: the _check file never exists so ninja keeps trying to generate it by running the command. Unfortunately Meson doesn't support running commands with no outputs [1]. Create an empty output file to fix this by setting `capture: true`. This doesn't work out-of-the-box, because glslang prints messages to stdout, and provides no way to change this [2]. As a result, shader errors are not surfaced back to the user - they end up in the _check file. Workaround this with a thin wrapper which redirects stdout to stderr when invoking glslang. [1]: https://github.com/mesonbuild/meson/issues/11506 [2]: https://github.com/KhronosGroup/glslang/pull/4138
32 lines
608 B
Meson
32 lines
608 B
Meson
check = find_program('./check.sh', native: true)
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embed = find_program('./embed.sh', native: true)
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shaders = [
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'common.vert',
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'quad.frag',
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'tex_rgba.frag',
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'tex_rgbx.frag',
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'tex_external.frag',
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]
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foreach name : shaders
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custom_target(
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'gles2-' + name,
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input: name,
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output: name + '_check',
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command: [check, glslang, '@INPUT@'],
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capture: true,
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build_by_default: true,
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)
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output = name.underscorify() + '_src.h'
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var = name.underscorify() + '_src'
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wlr_files += custom_target(
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output,
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command: [embed, var],
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input: name,
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output: output,
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feed: true,
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capture: true,
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)
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endforeach
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