github/wgpu
1
1
Fork 0
mirror of https://github.com/gfx-rs/wgpu.git synced 2026-04-22 03:02:01 -04:00
Code Issues Packages Projects Releases Wiki Activity

[spirv] handle LOD and BIAS image operands

Browse Source
This commit is contained in:
Dzmitry Malyshau
2020-08-26 22:40:16 -04:00
committed by Dzmitry Malyshau
parent 58b35f13ba
commit 91a7bdf7e7
1 changed files with 27 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
src/front/spv/mod.rs
View File

@@ -765,14 +765,14 @@ impl<I: Iterator<Item = u32>> Parser<I> {
},
);
}
Op::ImageSampleImplicitLod => {
Op::ImageSampleImplicitLod | Op::ImageSampleExplicitLod => {
inst.expect_at_least(5)?;
let result_type_id = self.next()?;
let result_id = self.next()?;
let sampled_image_id = self.next()?;
let coordinate_id = self.next()?;
let si_lexp = self.lookup_sampled_image.lookup(sampled_image_id)?;
let coord_lexp = self.lookup_expression.lookup(coordinate_id)?;
let si_lexp = self.lookup_sampled_image.lookup(sampled_image_id)?.clone();
let coord_lexp = self.lookup_expression.lookup(coordinate_id)?.clone();
let coord_type_handle = self.lookup_type.lookup(coord_lexp.type_id)?.handle;
let sampler_type_handle =
@@ -814,11 +814,34 @@ impl<I: Iterator<Item = u32>> Parser<I> {
_ => return Err(Error::InvalidSampleImage(image_type_handle)),
};
let mut level = crate::SampleLevel::Auto;
let mut base_wc = 5;
if base_wc < inst.wc {
let image_ops = self.next()?;
base_wc += 1;
let mask = spirv::ImageOperands::from_bits_truncate(image_ops);
if mask.contains(spirv::ImageOperands::BIAS) {
let bias_expr = self.next()?;
let bias_handle = self.lookup_expression.lookup(bias_expr)?.handle;
level = crate::SampleLevel::Bias(bias_handle);
base_wc += 1;
}
if mask.contains(spirv::ImageOperands::LOD) {
let lod_expr = self.next()?;
let lod_handle = self.lookup_expression.lookup(lod_expr)?.handle;
level = crate::SampleLevel::Exact(lod_handle);
base_wc += 1;
}
for _ in base_wc..inst.wc {
self.next()?;
}
}
let expr = crate::Expression::ImageSample {
image: si_lexp.image,
sampler: si_lexp.sampler,
coordinate: coord_lexp.handle,
level: crate::SampleLevel::Auto,
level,
depth_ref: None,
};
self.lookup_expression.insert(