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Hash : f3d5dac3
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Date : 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>
