Build fix: not all types support precisions.

include/GLSLANG/ShaderLang.h

@@ -109,9 +109,10 @@ typedef enum {
 } ShDataType;
 
 typedef enum {
-  SH_PRECISION_HIGHP    = 0x5001,
-  SH_PRECISION_MEDIUMP  = 0x5002,
-  SH_PRECISION_LOWP     = 0x5003
+  SH_PRECISION_HIGHP     = 0x5001,
+  SH_PRECISION_MEDIUMP   = 0x5002,
+  SH_PRECISION_LOWP      = 0x5003,
+  SH_PRECISION_UNDEFINED = 0
 } ShPrecisionType;
 
 typedef enum {

src/common/version.h

 #define MAJOR_VERSION 1
 #define MINOR_VERSION 2
 #define BUILD_VERSION 0
-#define BUILD_REVISION 2439
+#define BUILD_REVISION 2440
 
 #define STRINGIFY(x) #x
 #define MACRO_STRINGIFY(x) STRINGIFY(x)

src/compiler/ShaderLang.cpp

@@ -284,7 +284,9 @@ void ShGetVariableInfo(const ShHandle handle,
         *precision = SH_PRECISION_HIGHP;
         break;
     default:
-        ASSERT(false);
+        // Some types does not support precision, for example, boolean.
+        *precision = SH_PRECISION_UNDEFINED;
+        break;
     }
 
     // This size must match that queried by