kc3-lang/angle/src/tests/compiler_tests/Precise_test.cpp

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src/tests/compiler_tests/Precise_test.cpp

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Log

Author	Commit	Date	CI	Message
	f3d5dac3	2021-08-23T17:25:15		Vulkan: SPIR-V Gen: Drop dependency to glslang The SPIR-V gen path is now made default. Compilation through glslang is still supported for debugging, and is enabled on the GLSL* end2end tests for smoke testing. On release builds, glslang is not supported. To test with glslang, add the following gn arg (only necessary if dcheck is disabled): angle_enable_spirv_gen_through_glslang = true Then enable the generateSPIRVThroughGlslang feature. This can be done by setting an environment variable: ANGLE_FEATURE_OVERRIDES_ENABLED=generateSPIRVThroughGlslang ./angle_deqp_gles2_tests Binary size saving: - 1.3MB on Linux (SPIR-V gen itself: 240KB) - 730KB on Android (SPIR-V gen itself: 140KB) Perf tests: - LinkProgramBenchmark.Run/vulkan_compile_single_thread * Through glslang: truncated mean: 1287033.36 * Direct SPIR-V Gen: truncated mean: 244495.91 (~80% reduction) - LinkProgramBenchmark.Run/vulkan_compile_multi_thread * Through glslang: truncated mean: 4565894.83 * Direct SPIR-V Gen: truncated mean: 1158164.10 (~75% reduction) Bug: angleproject:4889 Bug: angleproject:6210 Change-Id: I486342702977c8114e90073b97183aba115a8b2d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3115140 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com>
	3036e090	2021-07-29T15:55:39		Vulkan: Direct SPIR-V Gen: Support the precise keyword The precise keyword is different in GLSL in that it defines what arithmetic operations _that have led to the value being assigned to a variable_ should be done precisely (i.e. not "contracted"). A tree traverser is implemented that detects precise access chains and applies precise-ness to the right hand side of assignment expressions to said access chains. This is only done if the shader uses the precise keyword in the first place. The algorithm for this is inspired by the implementation in glslang. This change additionally: - Fixes parser to allow precise on function parameters - Fixes GLSL code generation to output precise on struct members and function parameters. Bug: angleproject:4889 Change-Id: Ie3808c3c8c08da308e88af20f5f90379d9d14d47 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3056369 Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>