HLSL: enable #line extension by default for HLSL source.

Test/baseResults/hlsl.pp.line.frag.out

@@ -0,0 +1,124 @@
+hlsl.pp.line.frag
+Shader version: 450
+gl_FragCoord origin is upper left
+0:? Sequence
+0:131  Function Definition: main( (global structure{temp 4-component vector of float Color, temp float FragDepth Depth})
+0:4    Function Parameters: 
+0:?     Sequence
+0:124      Sequence
+0:124        move second child to first child (temp int)
+0:124          'thisLineIs' (temp int)
+0:124          Constant:
+0:124            124 (const int)
+0:126      move second child to first child (temp 4-component vector of float)
+0:126        Color: direct index for structure (temp 4-component vector of float)
+0:126          'psout' (temp structure{temp 4-component vector of float Color, temp float FragDepth Depth})
+0:126          Constant:
+0:126            0 (const int)
+0:?         Construct vec4 (temp 4-component vector of float)
+0:126          Convert int to float (temp float)
+0:126            'thisLineIs' (temp int)
+0:126          Constant:
+0:126            0.000000
+0:126          Constant:
+0:126            0.000000
+0:126          Constant:
+0:126            1.000000
+0:127      move second child to first child (temp float)
+0:127        Depth: direct index for structure (temp float FragDepth)
+0:127          'psout' (temp structure{temp 4-component vector of float Color, temp float FragDepth Depth})
+0:127          Constant:
+0:127            1 (const int)
+0:127        Constant:
+0:127          1.000000
+0:129      Branch: Return with expression
+0:129        'psout' (temp structure{temp 4-component vector of float Color, temp float FragDepth Depth})
+0:?   Linker Objects
+
+
+Linked fragment stage:
+
+
+Shader version: 450
+gl_FragCoord origin is upper left
+0:? Sequence
+0:131  Function Definition: main( (global structure{temp 4-component vector of float Color, temp float FragDepth Depth})
+0:4    Function Parameters: 
+0:?     Sequence
+0:124      Sequence
+0:124        move second child to first child (temp int)
+0:124          'thisLineIs' (temp int)
+0:124          Constant:
+0:124            124 (const int)
+0:126      move second child to first child (temp 4-component vector of float)
+0:126        Color: direct index for structure (temp 4-component vector of float)
+0:126          'psout' (temp structure{temp 4-component vector of float Color, temp float FragDepth Depth})
+0:126          Constant:
+0:126            0 (const int)
+0:?         Construct vec4 (temp 4-component vector of float)
+0:126          Convert int to float (temp float)
+0:126            'thisLineIs' (temp int)
+0:126          Constant:
+0:126            0.000000
+0:126          Constant:
+0:126            0.000000
+0:126          Constant:
+0:126            1.000000
+0:127      move second child to first child (temp float)
+0:127        Depth: direct index for structure (temp float FragDepth)
+0:127          'psout' (temp structure{temp 4-component vector of float Color, temp float FragDepth Depth})
+0:127          Constant:
+0:127            1 (const int)
+0:127        Constant:
+0:127          1.000000
+0:129      Branch: Return with expression
+0:129        'psout' (temp structure{temp 4-component vector of float Color, temp float FragDepth Depth})
+0:?   Linker Objects
+
+// Module Version 10000
+// Generated by (magic number): 80001
+// Id's are bound by 28
+
+                              Capability Shader
+               1:             ExtInstImport  "GLSL.std.450"
+                              MemoryModel Logical GLSL450
+                              EntryPoint Fragment 4  "main"
+                              ExecutionMode 4 OriginUpperLeft
+                              Source HLSL 450
+                              Name 4  "main"
+                              Name 8  "thisLineIs"
+                              Name 12  "PS_OUTPUT"
+                              MemberName 12(PS_OUTPUT) 0  "Color"
+                              MemberName 12(PS_OUTPUT) 1  "Depth"
+                              Name 14  "psout"
+                              MemberDecorate 12(PS_OUTPUT) 1 BuiltIn FragDepth
+               2:             TypeVoid
+               3:             TypeFunction 2
+               6:             TypeInt 32 1
+               7:             TypePointer Function 6(int)
+               9:      6(int) Constant 124
+              10:             TypeFloat 32
+              11:             TypeVector 10(float) 4
+   12(PS_OUTPUT):             TypeStruct 11(fvec4) 10(float)
+              13:             TypePointer Function 12(PS_OUTPUT)
+              15:      6(int) Constant 0
+              18:   10(float) Constant 0
+              19:   10(float) Constant 1065353216
+              21:             TypePointer Function 11(fvec4)
+              23:      6(int) Constant 1
+              24:             TypePointer Function 10(float)
+         4(main):           2 Function None 3
+               5:             Label
+   8(thisLineIs):      7(ptr) Variable Function
+       14(psout):     13(ptr) Variable Function
+                              Store 8(thisLineIs) 9
+              16:      6(int) Load 8(thisLineIs)
+              17:   10(float) ConvertSToF 16
+              20:   11(fvec4) CompositeConstruct 17 18 18 19
+              22:     21(ptr) AccessChain 14(psout) 15
+                              Store 22 20
+              25:     24(ptr) AccessChain 14(psout) 23
+                              Store 25 19
+              26:12(PS_OUTPUT) Load 14(psout)
+                              ReturnValue 26
+                              FunctionEnd

Test/hlsl.pp.line.frag

@@ -0,0 +1,24 @@
+
+#line 1
+
+struct PS_OUTPUT
+{
+    float4 Color : SV_Target0;
+    float  Depth : SV_Depth;
+};
+
+#line 2
+
+PS_OUTPUT main()
+{
+   PS_OUTPUT psout;
+
+#line 123 "SomeFile.frag"
+
+   int thisLineIs = __LINE__;  // gets 124
+
+   psout.Color = float4(thisLineIs, 0, 0, 1);
+   psout.Depth = 1.0;
+
+   return psout;
+}

glslang/MachineIndependent/parseVersions.h

@@ -119,12 +119,12 @@ public:
     TIntermediate& intermediate; // helper for making and hooking up pieces of the parse tree
 
 protected:
+    TMap<TString, TExtensionBehavior> extensionBehavior;    // for each extension string, what its current behavior is set to
     EShMessages messages;        // errors/warnings/rule-sets
     int numErrors;               // number of compile-time errors encountered
     TInputScanner* currentScanner;
 
 private:
-    TMap<TString, TExtensionBehavior> extensionBehavior;    // for each extension string, what its current behavior is set to
     explicit TParseVersions(const TParseVersions&);
     TParseVersions& operator=(const TParseVersions&);
 };

gtests/Hlsl.FromFile.cpp

@@ -100,6 +100,7 @@ INSTANTIATE_TEST_CASE_P(
         {"hlsl.load.basic.dx10.frag", "main"},
         {"hlsl.load.offset.dx10.frag", "main"},
         {"hlsl.load.offsetarray.dx10.frag", "main"},
+        {"hlsl.pp.line.frag", "main"},
         {"hlsl.sample.array.dx10.frag", "main"},
         {"hlsl.sample.basic.dx10.frag", "main"},
         {"hlsl.sample.offset.dx10.frag", "main"},

hlsl/hlslParseHelper.cpp

@@ -88,6 +88,14 @@ HlslParseContext::~HlslParseContext()
 {
 }
 
+void HlslParseContext::initializeExtensionBehavior()
+{
+    TParseContextBase::initializeExtensionBehavior();
+
+    // HLSL allows #line by default.
+    extensionBehavior[E_GL_GOOGLE_cpp_style_line_directive] = EBhEnable;
+}
+
 void HlslParseContext::setLimits(const TBuiltInResource& r)
 {
     resources = r;

hlsl/hlslParseHelper.h

@@ -47,6 +47,8 @@ public:
                      int version, EProfile, const SpvVersion& spvVersion, EShLanguage, TInfoSink&,
                      bool forwardCompatible = false, EShMessages messages = EShMsgDefault);
     virtual ~HlslParseContext();
+    void initializeExtensionBehavior();
+
     void setLimits(const TBuiltInResource&);
     bool parseShaderStrings(TPpContext&, TInputScanner& input, bool versionWillBeError = false);
     void getPreamble(std::string&);
@@ -184,7 +186,6 @@ protected:
     HlslParseContext(HlslParseContext&);
     HlslParseContext& operator=(HlslParseContext&);
 
-    TMap<TString, TExtensionBehavior> extensionBehavior;    // for each extension string, what its current behavior is set to
     static const int maxSamplerIndex = EsdNumDims * (EbtNumTypes * (2 * 2 * 2)); // see computeSamplerTypeIndex()
     bool afterEOF;
     TQualifier globalBufferDefaults;