Add more location aliasing checks

When location aliasing, the aliases sharing the location must have the same underlying numerical type and bit width (floating-point or integer, 32-bit versus 64-bit, etc.) and the same auxiliary storage and interpolation qualification.
This adds checks for the "patch" and "sample" qualifiers, and also relaxes the checks when the signedness of integer types differs.

Test/baseResults/ps_sample.frag.out

@@ -0,0 +1,47 @@
+ps_sample.frag
+ERROR: 0:5: 'location' : the aliases sharing the location 1 must be the same basic type and interpolation qualification
+ERROR: 1 compilation errors.  No code generated.
+
+
+Shader version: 430
+Requested GL_ARB_enhanced_layouts
+ERROR: node is still EOpNull!
+0:10  Function Definition: main( ( global void)
+0:10    Function Parameters: 
+0:12    Sequence
+0:12      Sequence
+0:12        move second child to first child ( temp 4-component vector of float)
+0:12          'result' ( temp 4-component vector of float)
+0:12          'gs_fs' ( smooth in 4-component vector of float)
+0:16      move second child to first child ( temp 4-component vector of float)
+0:16        'fs_out' ( out 4-component vector of float)
+0:16        'result' ( temp 4-component vector of float)
+0:?   Linker Objects
+0:?     'gohan' (layout( location=1 component=0) flat in uint)
+0:?     'goten' (layout( location=1 component=2) flat sample in 2-component vector of uint)
+0:?     'gs_fs' ( smooth in 4-component vector of float)
+0:?     'fs_out' ( out 4-component vector of float)
+
+
+Linked fragment stage:
+
+
+Shader version: 430
+Requested GL_ARB_enhanced_layouts
+ERROR: node is still EOpNull!
+0:10  Function Definition: main( ( global void)
+0:10    Function Parameters: 
+0:12    Sequence
+0:12      Sequence
+0:12        move second child to first child ( temp 4-component vector of float)
+0:12          'result' ( temp 4-component vector of float)
+0:12          'gs_fs' ( smooth in 4-component vector of float)
+0:16      move second child to first child ( temp 4-component vector of float)
+0:16        'fs_out' ( out 4-component vector of float)
+0:16        'result' ( temp 4-component vector of float)
+0:?   Linker Objects
+0:?     'gohan' (layout( location=1 component=0) flat in uint)
+0:?     'goten' (layout( location=1 component=2) flat sample in 2-component vector of uint)
+0:?     'gs_fs' ( smooth in 4-component vector of float)
+0:?     'fs_out' ( out 4-component vector of float)
+

Test/baseResults/ps_uint_int.frag.out

@@ -0,0 +1,21 @@
+ps_uint_int.frag
+Shader version: 450
+0:? Sequence
+0:6  Function Definition: main( ( global void)
+0:6    Function Parameters: 
+0:?   Linker Objects
+0:?     'u' (layout( location=0 component=0) flat in uint)
+0:?     'i' (layout( location=0 component=1) flat in int)
+
+
+Linked fragment stage:
+
+
+Shader version: 450
+0:? Sequence
+0:6  Function Definition: main( ( global void)
+0:6    Function Parameters: 
+0:?   Linker Objects
+0:?     'u' (layout( location=0 component=0) flat in uint)
+0:?     'i' (layout( location=0 component=1) flat in int)
+

Test/baseResults/tes_patch.tese.out

@@ -0,0 +1,61 @@
+tes_patch.tese
+ERROR: 0:7: 'location' : the aliases sharing the location 1 must be the same basic type and interpolation qualification
+ERROR: 1 compilation errors.  No code generated.
+
+
+Shader version: 430
+Requested GL_ARB_enhanced_layouts
+input primitive = isolines
+vertex spacing = none
+triangle order = none
+using point mode
+ERROR: node is still EOpNull!
+0:12  Function Definition: main( ( global void)
+0:12    Function Parameters: 
+0:14    Sequence
+0:14      Sequence
+0:14        move second child to first child ( temp 4-component vector of float)
+0:14          'result' ( temp 4-component vector of float)
+0:14          direct index ( temp 4-component vector of float)
+0:14            'tcs_tes' ( in 32-element array of 4-component vector of float)
+0:14            Constant:
+0:14              0 (const int)
+0:18      add second child into first child ( temp 4-component vector of float)
+0:18        'tes_gs' ( out 4-component vector of float)
+0:18        'result' ( temp 4-component vector of float)
+0:?   Linker Objects
+0:?     'gohan' (layout( location=1 component=0) in 32-element array of 2-component vector of float)
+0:?     'goten' (layout( location=1 component=2) patch in 2-component vector of float)
+0:?     'tcs_tes' ( in 32-element array of 4-component vector of float)
+0:?     'tes_gs' ( out 4-component vector of float)
+
+
+Linked tessellation evaluation stage:
+
+
+Shader version: 430
+Requested GL_ARB_enhanced_layouts
+input primitive = isolines
+vertex spacing = equal_spacing
+triangle order = ccw
+using point mode
+ERROR: node is still EOpNull!
+0:12  Function Definition: main( ( global void)
+0:12    Function Parameters: 
+0:14    Sequence
+0:14      Sequence
+0:14        move second child to first child ( temp 4-component vector of float)
+0:14          'result' ( temp 4-component vector of float)
+0:14          direct index ( temp 4-component vector of float)
+0:14            'tcs_tes' ( in 32-element array of 4-component vector of float)
+0:14            Constant:
+0:14              0 (const int)
+0:18      add second child into first child ( temp 4-component vector of float)
+0:18        'tes_gs' ( out 4-component vector of float)
+0:18        'result' ( temp 4-component vector of float)
+0:?   Linker Objects
+0:?     'gohan' (layout( location=1 component=0) in 32-element array of 2-component vector of float)
+0:?     'goten' (layout( location=1 component=2) patch in 2-component vector of float)
+0:?     'tcs_tes' ( in 32-element array of 4-component vector of float)
+0:?     'tes_gs' ( out 4-component vector of float)
+

Test/ps_sample.frag

@@ -0,0 +1,17 @@
+#version 430 core
+#extension GL_ARB_enhanced_layouts : require
+
+layout (location = 1, component = 0)  flat in uint gohan;
+layout (location = 1, component = 2) sample flat in uvec2 goten;
+
+in  vec4 gs_fs;
+out vec4 fs_out;
+
+void main()
+{
+    vec4 result = gs_fs;
+
+
+
+    fs_out = result;
+}

Test/ps_uint_int.frag

@@ -0,0 +1,7 @@
+#version 450
+  
+layout(location=0, component=0) flat in uint u;
+layout(location=0, component=1) flat in int i;
+
+void main() {
+}

Test/tes_patch.tese

@@ -0,0 +1,19 @@
+#version 430 core
+#extension GL_ARB_enhanced_layouts : require
+
+layout(isolines, point_mode) in;
+
+layout (location = 1, component = 0)   in vec2 gohan[];
+layout (location = 1, component = 2) patch  in vec2 goten;
+
+in  vec4 tcs_tes[];
+out vec4 tes_gs;
+
+void main()
+{
+    vec4 result = tcs_tes[0];
+
+
+
+    tes_gs += result;
+}

glslang/MachineIndependent/linkValidate.cpp

@@ -1689,7 +1689,7 @@ int TIntermediate::addUsedLocation(const TQualifier& qualifier, const TType& typ
         // First range:
         TRange locationRange(qualifier.layoutLocation, qualifier.layoutLocation);
         TRange componentRange(0, 3);
-        TIoRange range(locationRange, componentRange, type.getBasicType(), 0, qualifier.centroid, qualifier.smooth, qualifier.flat);
+        TIoRange range(locationRange, componentRange, type.getBasicType(), 0, qualifier.centroid, qualifier.smooth, qualifier.flat, qualifier.sample, qualifier.patch);
 
         // check for collisions
         collision = checkLocationRange(set, range, type, typeCollision);
@@ -1699,7 +1699,7 @@ int TIntermediate::addUsedLocation(const TQualifier& qualifier, const TType& typ
             // Second range:
             TRange locationRange2(qualifier.layoutLocation + 1, qualifier.layoutLocation + 1);
             TRange componentRange2(0, 1);
-            TIoRange range2(locationRange2, componentRange2, type.getBasicType(), 0, qualifier.centroid, qualifier.smooth, qualifier.flat);
+            TIoRange range2(locationRange2, componentRange2, type.getBasicType(), 0, qualifier.centroid, qualifier.smooth, qualifier.flat, qualifier.sample, qualifier.patch);
 
             // check for collisions
             collision = checkLocationRange(set, range2, type, typeCollision);
@@ -1725,7 +1725,7 @@ int TIntermediate::addUsedLocation(const TQualifier& qualifier, const TType& typ
     TBasicType basicTy = type.getBasicType();
     if (basicTy == EbtSampler && type.getSampler().isAttachmentEXT())
         basicTy = type.getSampler().type;
-    TIoRange range(locationRange, componentRange, basicTy, qualifier.hasIndex() ? qualifier.getIndex() : 0, qualifier.centroid, qualifier.smooth, qualifier.flat);
+    TIoRange range(locationRange, componentRange, basicTy, qualifier.hasIndex() ? qualifier.getIndex() : 0, qualifier.centroid, qualifier.smooth, qualifier.flat, qualifier.sample, qualifier.patch);
 
     // check for collisions, except for vertex inputs on desktop targeting OpenGL
     if (! (!isEsProfile() && language == EShLangVertex && qualifier.isPipeInput()) || spvVersion.vulkan > 0)
@@ -1736,7 +1736,21 @@ int TIntermediate::addUsedLocation(const TQualifier& qualifier, const TType& typ
 
     return collision;
 }
-
+static bool checkType(TBasicType t1, TBasicType t2) {
+    if (t1 != t2) {
+        if ((t1 == EbtInt8 && t2 == EbtUint8) ||
+            (t2 == EbtInt8 && t1 == EbtUint8) ||
+            (t1 == EbtInt16 && t2 == EbtUint16) ||
+            (t2 == EbtInt16 && t1 == EbtUint16)||
+            (t1 == EbtInt && t2 == EbtUint) ||
+            (t2 == EbtInt && t1 == EbtUint)||
+            (t1 == EbtInt64 && t2 == EbtUint64) ||
+            (t2 == EbtInt64 && t1 == EbtUint64)) {
+            return true;
+        }
+    }
+    return t1 == t2;
+}
 // Compare a new (the passed in) 'range' against the existing set, and see
 // if there are any collisions.
 //
@@ -1749,10 +1763,12 @@ int TIntermediate::checkLocationRange(int set, const TIoRange& range, const TTyp
             // there is a collision; pick one
             return std::max(range.location.start, usedIo[set][r].location.start);
         } else if (range.location.overlap(usedIo[set][r].location) &&
-                   (type.getBasicType() != usedIo[set][r].basicType ||
+                   (!checkType(type.getBasicType(), usedIo[set][r].basicType) ||
                     type.getQualifier().centroid != usedIo[set][r].centroid ||
                     type.getQualifier().smooth != usedIo[set][r].smooth ||
-                    type.getQualifier().flat != usedIo[set][r].flat)) {
+                    type.getQualifier().flat != usedIo[set][r].flat ||
+                    type.getQualifier().sample != usedIo[set][r].sample ||
+                    type.getQualifier().patch != usedIo[set][r].patch)) {
             // aliased-type mismatch
             typeCollision = true;
             return std::max(range.location.start, usedIo[set][r].location.start);

glslang/MachineIndependent/localintermediate.h

@@ -124,8 +124,8 @@ struct TRange {
 // within the same location range, component range, and index value.  Locations don't alias unless
 // all other dimensions of their range overlap.
 struct TIoRange {
-    TIoRange(TRange location, TRange component, TBasicType basicType, int index, bool centroid, bool smooth, bool flat)
-        : location(location), component(component), basicType(basicType), index(index), centroid(centroid), smooth(smooth), flat(flat)
+    TIoRange(TRange location, TRange component, TBasicType basicType, int index, bool centroid, bool smooth, bool flat, bool sample, bool patch)
+        : location(location), component(component), basicType(basicType), index(index), centroid(centroid), smooth(smooth), flat(flat), sample(sample), patch(patch)
     {
     }
     bool overlap(const TIoRange& rhs) const
@@ -139,6 +139,8 @@ struct TIoRange {
     bool centroid;
     bool smooth;
     bool flat;
+    bool sample;
+    bool patch;
 };
 
 // An offset range is a 2-D rectangle; the set of (binding, offset) pairs all lying

gtests/AST.FromFile.cpp

@@ -314,6 +314,9 @@ INSTANTIATE_TEST_SUITE_P(
         "index_outside_sample_mask_range.frag",
         "positive_infinity.frag",
         "matrixCompMult.vert",
+        "ps_uint_int.frag",
+        "ps_sample.frag",
+        "tes_patch.tese",
     })),
     FileNameAsCustomTestSuffix
 );