From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- gfx/wr/webrender/tests/angle_shader_validation.rs | 75 +++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 gfx/wr/webrender/tests/angle_shader_validation.rs (limited to 'gfx/wr/webrender/tests/angle_shader_validation.rs') diff --git a/gfx/wr/webrender/tests/angle_shader_validation.rs b/gfx/wr/webrender/tests/angle_shader_validation.rs new file mode 100644 index 0000000000..d6fe618de0 --- /dev/null +++ b/gfx/wr/webrender/tests/angle_shader_validation.rs @@ -0,0 +1,75 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +extern crate mozangle; +extern crate webrender; +extern crate webrender_build; + +use mozangle::shaders::{BuiltInResources, Output, ShaderSpec, ShaderValidator}; +use webrender_build::shader::{ShaderFeatureFlags, ShaderVersion, build_shader_strings, get_shader_features}; + +// from glslang +const FRAGMENT_SHADER: u32 = 0x8B30; +const VERTEX_SHADER: u32 = 0x8B31; + +#[test] +fn validate_shaders() { + mozangle::shaders::initialize().unwrap(); + + let resources = BuiltInResources::default(); + let vs_validator = + ShaderValidator::new(VERTEX_SHADER, ShaderSpec::Gles3, Output::Essl, &resources).unwrap(); + + let fs_validator = + ShaderValidator::new(FRAGMENT_SHADER, ShaderSpec::Gles3, Output::Essl, &resources).unwrap(); + + for (shader, configs) in get_shader_features(ShaderFeatureFlags::GLES) { + for config in configs { + let features = config.split(",").filter(|f| !f.is_empty()).collect::>(); + + let (vs, fs) = build_shader_strings( + ShaderVersion::Gles, + &features, + shader, + &|f| webrender::get_unoptimized_shader_source(f, None) + ); + + let full_shader_name = format!("{} {}", shader, config); + validate(&vs_validator, &full_shader_name, vs); + validate(&fs_validator, &full_shader_name, fs); + } + } +} + +fn validate(validator: &ShaderValidator, name: &str, source: String) { + // Check for each `switch` to have a `default`, see + // https://github.com/servo/webrender/wiki/Driver-issues#lack-of-default-case-in-a-switch + assert_eq!(source.matches("switch").count(), source.matches("default:").count(), + "Shader '{}' doesn't have all `switch` covered with `default` cases", name); + // Run Angle validator + match validator.compile_and_translate(&[&source]) { + Ok(_) => { + // Ensure that the shader uses at most 16 varying vectors. This counts the number of + // vectors assuming that the driver does not perform additional packing. The spec states + // that the driver should pack varyings, however, on some Adreno 3xx devices we have + // observed that this is not the case. See bug 1695912. + let varying_vectors = validator.get_num_unpacked_varying_vectors(); + let max_varying_vectors = 16; + assert!( + varying_vectors <= max_varying_vectors, + "Shader {} uses {} varying vectors. Max allowed {}", + name, varying_vectors, max_varying_vectors + ); + + println!("Shader translated succesfully: {}", name); + } + Err(_) => { + panic!( + "Shader compilation failed: {}\n{}", + name, + validator.info_log() + ); + } + } +} -- cgit v1.2.3