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[glsl-out] emit sample variables extension

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Dzmitry Malyshau
2021-05-17 22:00:05 -04:00
committed by Dzmitry Malyshau
parent 1f53ff1d1e
commit 8b60171403
1 changed files with 11 additions and 0 deletions
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11
src/back/glsl/features.rs
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@@ -30,6 +30,8 @@ bitflags::bitflags! {
const SAMPLE_QUALIFIER = 1 << 12;
const CLIP_DISTANCE = 1 << 13;
const CULL_DISTANCE = 1 << 14;
// Sample ID
const SAMPLE_VARIABLES = 1 << 15;
}
}
@@ -95,6 +97,7 @@ impl FeaturesManager {
// gl_ClipDistance is supported by core versions > 1.3 and aren't supported by an es versions without extensions
check_feature!(CLIP_DISTANCE, 130, 300);
check_feature!(CULL_DISTANCE, 450, 300);
check_feature!(SAMPLE_VARIABLES, 300, 300);
// Return an error if there are missing features
if missing.is_empty() {
@@ -183,6 +186,11 @@ impl FeaturesManager {
// writeln!(out, "#extension GL_EXT_clip_cull_distance : require")?;
}
if self.0.contains(Features::SAMPLE_VARIABLES) && version.is_es() {
// https://www.khronos.org/registry/OpenGL/extensions/OES/OES_sample_variables.txt
writeln!(out, "#extension GL_OES_sample_variables : require")?;
}
Ok(())
}
}
@@ -310,6 +318,9 @@ impl<'a, W> Writer<'a, W> {
crate::BuiltIn::CullDistance => {
self.features.request(Features::CULL_DISTANCE)
}
crate::BuiltIn::SampleIndex => {
self.features.request(Features::SAMPLE_VARIABLES)
}
_ => {}
},
Binding::Location {