Avoid overflow on shift left operator in subgroups ballot

Fix possible overflow in GLSL logic shift left (<<) operation due
to mediump precision of agument. GLSLang was generating following code:

OpDecorate %52 RelaxedPrecision
..
%52 = OpShiftLeftLogical %8 %30 %51

which may oveflow for gl_SubgroupInvocationID > 16.

Affects: dEQP-VK.subgroups.ballot.*

Components: Vulkan

VK-GL-CTS issue: 713

Change-Id: I4ce345261111524ad2da219b1eafa15572074426
1 file changed
tree: e25b07c7154fa38376fb1be0158475e9d6f6909a
  1. android/
  2. data/
  3. doc/
  4. execserver/
  5. executor/
  6. external/
  7. framework/
  8. modules/
  9. scripts/
  10. targets/
  11. .editorconfig
  12. .gitignore
  13. Android.mk
  14. AndroidGen.mk
  15. CMakeLists.txt
  16. LICENSE
  17. MODULE_LICENSE_APACHE2
  18. NOTICE
  19. OWNERS
  20. README.md
README.md

dEQP README

This repository contains a GPU testing suite called dEQP (drawElements Quality Program). dEQP contains tests for several graphics APIs, including OpenGL ES, EGL, and Vulkan.

Documentation

Up-to-date documentation for the dEQP is available at Android Open Source Project site.

Khronos Vulkan Conformance Tests

This repository includes Khronos Vulkan CTS under external/vulkancts directory. For more information see Vulkan CTS README.

Khronos OpenGL / OpenGL ES Conformance Tests

This repository includes Khronos OpenGL / OpenGL ES CTS under external/openglcts directory. For more information see OpenGL / OpenGL ES CTS README.