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Move ANGLE name shenanigans to WebGL thread
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commit
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3 changed files with 50 additions and 51 deletions
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@ -589,39 +589,3 @@ parameters! {
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}),
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}
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}
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/// ANGLE adds a `_u` prefix to variable names:
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///
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/// https://chromium.googlesource.com/angle/angle/+/855d964bd0d05f6b2cb303f625506cf53d37e94f
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///
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/// To avoid hard-coding this we would need to use the `sh::GetAttributes` and `sh::GetUniforms`
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/// API to look up the `x.name` and `x.mappedName` members.
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const ANGLE_NAME_PREFIX: &'static str = "_u";
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pub fn to_name_in_compiled_shader(s: &str) -> String {
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map_dot_separated(s, |s, mapped| {
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mapped.push_str(ANGLE_NAME_PREFIX);
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mapped.push_str(s);
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})
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}
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pub fn from_name_in_compiled_shader(s: &str) -> String {
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map_dot_separated(s, |s, mapped| {
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mapped.push_str(if s.starts_with(ANGLE_NAME_PREFIX) {
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&s[ANGLE_NAME_PREFIX.len()..]
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} else {
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s
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})
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})
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}
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fn map_dot_separated<F: Fn(&str, &mut String)>(s: &str, f: F) -> String {
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let mut iter = s.split('.');
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let mut mapped = String::new();
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f(iter.next().unwrap(), &mut mapped);
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for s in iter {
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mapped.push('.');
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f(s, &mut mapped);
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}
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mapped
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}
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