commit 7c88aff1a9317920eab412d2a11dd8fb3e13783b
author Rex Xu <rex.xu@amd.com> Wed Apr 11 16:56:50 2018 +0800
committer Rex Xu <rex.xu@amd.com> Sat Apr 14 21:40:49 2018 +0800
tree 65353a6957bf41548c636e825408a3e6ff24bcc7
parent 6cf7645c6db91205f00684d8bc525a9e2f7dc989

Specify SPV_AMD_gpu_shader_int16 extension string when frexp() takes 16-bit
exp operand

SPIRV/GlslangToSpv.cpp

diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index 95b507b..d2b2dee 100755
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -6126,6 +6126,11 @@
             assert(builder.isPointerType(typeId1));
             typeId1 = builder.getContainedTypeId(typeId1);
             int width = builder.getScalarTypeWidth(typeId1);
+#ifdef AMD_EXTENSIONS
+            if (width == 16)
+                // Using 16-bit exp operand, enable extension SPV_AMD_gpu_shader_int16
+                builder.addExtension(spv::E_SPV_AMD_gpu_shader_int16);
+#endif
             if (builder.getNumComponents(operands[0]) == 1)
                 frexpIntType = builder.makeIntegerType(width, true);
             else