HLSL: Support register(..., spaceN) for setting the descriptor set.

This was suggested in issue #454.

Test/baseResults/hlsl.buffer.frag.out

@@ -23,7 +23,7 @@ gl_FragCoord origin is upper left
 0:27                  Constant:
 0:27                    0 (const uint)
 0:27              v3: direct index for structure (layout(column_major std140 ) uniform 4-component vector of float)
-0:27                'anon@2' (layout(binding=2 column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v3, layout(column_major std140 offset=20 ) uniform int i3})
+0:27                'anon@2' (layout(set=10 binding=2 column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v3, layout(column_major std140 offset=20 ) uniform int i3})
 0:27                Constant:
 0:27                  0 (const uint)
 0:27            v4: direct index for structure (layout(column_major std430 offset=16 ) buffer 4-component vector of float)
@@ -34,7 +34,7 @@ gl_FragCoord origin is upper left
 0:?   Linker Objects
 0:?     'anon@0' (layout(column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v1})
 0:?     'anon@1' (layout(column_major std430 ) buffer block{layout(column_major std430 ) buffer 4-component vector of float v2})
-0:?     'anon@2' (layout(binding=2 column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v3, layout(column_major std140 offset=20 ) uniform int i3})
+0:?     'anon@2' (layout(set=10 binding=2 column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v3, layout(column_major std140 offset=20 ) uniform int i3})
 0:?     'anon@3' (layout(binding=8 column_major std430 ) buffer block{layout(column_major std430 offset=16 ) buffer 4-component vector of float v4, layout(column_major std430 offset=48 ) buffer int i4, layout(column_major std430 offset=60 ) buffer float f1, layout(column_major std430 offset=64 ) buffer float f3, layout(column_major std430 offset=68 ) buffer float f4, layout(column_major std430 offset=72 ) buffer float f5, layout(column_major std430 ) buffer float f6, layout(column_major std430 ) buffer float f7})
 
 
@@ -65,7 +65,7 @@ gl_FragCoord origin is upper left
 0:27                  Constant:
 0:27                    0 (const uint)
 0:27              v3: direct index for structure (layout(column_major std140 ) uniform 4-component vector of float)
-0:27                'anon@2' (layout(binding=2 column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v3, layout(column_major std140 offset=20 ) uniform int i3})
+0:27                'anon@2' (layout(set=10 binding=2 column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v3, layout(column_major std140 offset=20 ) uniform int i3})
 0:27                Constant:
 0:27                  0 (const uint)
 0:27            v4: direct index for structure (layout(column_major std430 offset=16 ) buffer 4-component vector of float)
@@ -76,7 +76,7 @@ gl_FragCoord origin is upper left
 0:?   Linker Objects
 0:?     'anon@0' (layout(column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v1})
 0:?     'anon@1' (layout(column_major std430 ) buffer block{layout(column_major std430 ) buffer 4-component vector of float v2})
-0:?     'anon@2' (layout(binding=2 column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v3, layout(column_major std140 offset=20 ) uniform int i3})
+0:?     'anon@2' (layout(set=10 binding=2 column_major std140 ) uniform block{layout(column_major std140 ) uniform 4-component vector of float v3, layout(column_major std140 offset=20 ) uniform int i3})
 0:?     'anon@3' (layout(binding=8 column_major std430 ) buffer block{layout(column_major std430 offset=16 ) buffer 4-component vector of float v4, layout(column_major std430 offset=48 ) buffer int i4, layout(column_major std430 offset=60 ) buffer float f1, layout(column_major std430 offset=64 ) buffer float f3, layout(column_major std430 offset=68 ) buffer float f4, layout(column_major std430 offset=72 ) buffer float f5, layout(column_major std430 ) buffer float f6, layout(column_major std430 ) buffer float f7})
 
 // Module Version 10000
@@ -122,7 +122,7 @@ gl_FragCoord origin is upper left
                               MemberDecorate 28 0 Offset 0
                               MemberDecorate 28 1 Offset 20
                               Decorate 28 Block
-                              Decorate 30 DescriptorSet 0
+                              Decorate 30 DescriptorSet 10
                               Decorate 30 Binding 2
                               MemberDecorate 34 0 Offset 16
                               MemberDecorate 34 1 Offset 48

Test/hlsl.buffer.frag

@@ -6,7 +6,7 @@ tbuffer {
     float4 v2;
 };
 
-cbuffer cbufName : register(b2) {
+cbuffer cbufName : register(b2, space10) {
     float4 v3;
     int i3 : packoffset(c1.y);
 };

glslang/Include/revision.h

@@ -2,5 +2,5 @@
 // For the version, it uses the latest git tag followed by the number of commits.
 // For the date, it uses the current date (when then script is run).
 
-#define GLSLANG_REVISION "Overload400-PrecQual.1470"
+#define GLSLANG_REVISION "Overload400-PrecQual.1472"
 #define GLSLANG_DATE "05-Sep-2016"

hlsl/hlslGrammar.cpp

@@ -2591,11 +2591,11 @@ void HlslGrammar::acceptArraySpecifier(TArraySizes*& arraySizes)
 }
 
 // post_decls
-//      : COLON semantic                                                            // optional
+//      : COLON semantic // optional
-//        COLON PACKOFFSET LEFT_PAREN c[Subcomponent][.component]       RIGHT_PAREN // optional
+//        COLON PACKOFFSET LEFT_PAREN c[Subcomponent][.component] RIGHT_PAREN // optional
-//        COLON REGISTER LEFT_PAREN [shader_profile,] Type#[subcomp]opt RIGHT_PAREN // optional
+//        COLON REGISTER LEFT_PAREN [shader_profile,] Type#[subcomp]opt (COMMA SPACEN)opt RIGHT_PAREN // optional
 //        COLON LAYOUT layout_qualifier_list
-//        annotations                                                               // optional
+//        annotations // optional
 //
 void HlslGrammar::acceptPostDecls(TQualifier& qualifier)
 {
@@ -2632,7 +2632,8 @@ void HlslGrammar::acceptPostDecls(TQualifier& qualifier)
                 expected("layout, semantic, packoffset, or register");
                 return;
             } else if (*idToken.string == "register") {
-                // REGISTER LEFT_PAREN [shader_profile,] Type#[subcomp]opt RIGHT_PAREN
+                // REGISTER LEFT_PAREN [shader_profile,] Type#[subcomp]opt (COMMA SPACEN)opt RIGHT_PAREN
+                // LEFT_PAREN
                 if (! acceptTokenClass(EHTokLeftParen)) {
                     expected("(");
                     return;
@@ -2643,7 +2644,8 @@ void HlslGrammar::acceptPostDecls(TQualifier& qualifier)
                     expected("register number description");
                     return;
                 }
-                if (acceptTokenClass(EHTokComma)) {
+                if (registerDesc.string->size() > 1 && !isdigit((*registerDesc.string)[1]) &&
+                                                       acceptTokenClass(EHTokComma)) {
                     // Then we didn't really see the registerDesc yet, it was
                     // actually the profile.  Adjust...
                     profile = registerDesc;
@@ -2666,11 +2668,20 @@ void HlslGrammar::acceptPostDecls(TQualifier& qualifier)
                         break;
                     }
                 }
+                // (COMMA SPACEN)opt
+                HlslToken spaceDesc;
+                if (acceptTokenClass(EHTokComma)) {
+                    if (! acceptIdentifier(spaceDesc)) {
+                        expected ("space identifier");
+                        return;
+                    }
+                }
+                // RIGHT_PAREN
                 if (! acceptTokenClass(EHTokRightParen)) {
                     expected(")");
                     break;
                 }
-                parseContext.handleRegister(registerDesc.loc, qualifier, profile.string, *registerDesc.string, subComponent);
+                parseContext.handleRegister(registerDesc.loc, qualifier, profile.string, *registerDesc.string, subComponent, spaceDesc.string);
             } else {
                 // semantic, in idToken.string
                 parseContext.handleSemantic(idToken.loc, qualifier, *idToken.string);

hlsl/hlslParseHelper.cpp

@@ -2523,7 +2523,7 @@ void HlslParseContext::handlePackOffset(const TSourceLoc& loc, TQualifier& quali
 // 'desc' is the type# part.
 //
 void HlslParseContext::handleRegister(const TSourceLoc& loc, TQualifier& qualifier, const glslang::TString* profile,
-                                      const glslang::TString& desc, int subComponent)
+                                      const glslang::TString& desc, int subComponent, const glslang::TString* spaceDesc)
 {
     if (profile != nullptr)
         warn(loc, "ignoring shader_profile", "register", "");
@@ -2555,6 +2555,28 @@ void HlslParseContext::handleRegister(const TSourceLoc& loc, TQualifier& qualifi
         warn(loc, "ignoring unrecognized register type", "register", "%c", desc[0]);
         break;
     }
+
+    // space
+    unsigned int setNumber;
+    const auto crackSpace = [&]() {
+        const int spaceLen = 5;
+        if (spaceDesc->size() < spaceLen + 1)
+            return false;
+        if (spaceDesc->compare(0, spaceLen, "space") != 0)
+            return false;
+        if (! isdigit((*spaceDesc)[spaceLen]))
+            return false;
+        setNumber = atoi(spaceDesc->substr(spaceLen, spaceDesc->size()).c_str());
+        return true;
+    };
+
+    if (spaceDesc) {
+        if (! crackSpace()) {
+            error(loc, "expected spaceN", "register", "");
+            return;
+        }
+        qualifier.layoutSet = setNumber;
+    }
 }
 
 //

hlsl/hlslParseHelper.h

@@ -102,7 +102,7 @@ public:
     void handlePackOffset(const TSourceLoc&, TQualifier&, const glslang::TString& location,
                           const glslang::TString* component);
     void handleRegister(const TSourceLoc&, TQualifier&, const glslang::TString* profile, const glslang::TString& desc,
-                        int subComponent);
+                        int subComponent, const glslang::TString*);
 
     TIntermAggregate* handleSamplerTextureCombine(const TSourceLoc& loc, TIntermTyped* argTex, TIntermTyped* argSampler);