HLSL: HS return is arrayed to match SPIR-V semantics
HLSL HS outputs a per ctrl point value, and the DS reads an array of that type. (It also has a per patch frequency). The per-ctrl-pt frequency is arrayed on just one side, as opposed to SPIR-V which is arrayed on both. To match semantics, the compiler creates an array behind the scenes and indexes it by invocation ID, assigning the HS return value to it.
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steve-lunarg
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7afe1344ca
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e752f463c5
6 changed files with 477 additions and 382 deletions
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@ -27,7 +27,9 @@ vertices = 3
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0:? 'ip' ( temp 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? 'ip' (layout( location=0) in 3-element array of structure{ temp 3-component vector of float cpoint})
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0:26 move second child to first child ( temp structure{ temp 3-component vector of float cpoint})
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0:? '@entryPointOutput' (layout( location=0) out structure{ temp 3-component vector of float cpoint})
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0:26 indirect index ( temp structure{ temp 3-component vector of float cpoint})
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0:? '@entryPointOutput' (layout( location=0) out 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? 'InvocationId' ( in uint InvocationID)
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0:26 Function Call: @main(struct-VS_OUT-vf31[3]; ( temp structure{ temp 3-component vector of float cpoint})
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0:? 'ip' ( temp 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? Barrier ( temp void)
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@ -43,7 +45,7 @@ vertices = 3
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0:33 Function Definition: PCF( ( temp void)
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0:33 Function Parameters:
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0:? Linker Objects
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0:? '@entryPointOutput' (layout( location=0) out structure{ temp 3-component vector of float cpoint})
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0:? '@entryPointOutput' (layout( location=0) out 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? 'ip' (layout( location=0) in 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? 'InvocationId' ( in uint InvocationID)
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@ -79,7 +81,9 @@ vertices = 3
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0:? 'ip' ( temp 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? 'ip' (layout( location=0) in 3-element array of structure{ temp 3-component vector of float cpoint})
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0:26 move second child to first child ( temp structure{ temp 3-component vector of float cpoint})
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0:? '@entryPointOutput' (layout( location=0) out structure{ temp 3-component vector of float cpoint})
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0:26 indirect index ( temp structure{ temp 3-component vector of float cpoint})
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0:? '@entryPointOutput' (layout( location=0) out 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? 'InvocationId' ( in uint InvocationID)
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0:26 Function Call: @main(struct-VS_OUT-vf31[3]; ( temp structure{ temp 3-component vector of float cpoint})
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0:? 'ip' ( temp 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? Barrier ( temp void)
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@ -95,18 +99,18 @@ vertices = 3
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0:33 Function Definition: PCF( ( temp void)
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0:33 Function Parameters:
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0:? Linker Objects
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0:? '@entryPointOutput' (layout( location=0) out structure{ temp 3-component vector of float cpoint})
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0:? '@entryPointOutput' (layout( location=0) out 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? 'ip' (layout( location=0) in 3-element array of structure{ temp 3-component vector of float cpoint})
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0:? 'InvocationId' ( in uint InvocationID)
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// Module Version 10000
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// Generated by (magic number): 80001
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// Id's are bound by 51
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// Id's are bound by 55
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Capability Tessellation
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1: ExtInstImport "GLSL.std.450"
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MemoryModel Logical GLSL450
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EntryPoint TessellationControl 4 "main" 33 36 44
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EntryPoint TessellationControl 4 "main" 33 37 39
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ExecutionMode 4 OutputVertices 3
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Name 4 "main"
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Name 8 "VS_OUT"
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@ -119,12 +123,12 @@ vertices = 3
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Name 21 "output"
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Name 31 "ip"
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Name 33 "ip"
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Name 36 "@entryPointOutput"
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Name 37 "param"
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Name 44 "InvocationId"
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Name 37 "@entryPointOutput"
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Name 39 "InvocationId"
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Name 41 "param"
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Decorate 33(ip) Location 0
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Decorate 36(@entryPointOutput) Location 0
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Decorate 44(InvocationId) BuiltIn InvocationId
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Decorate 37(@entryPointOutput) Location 0
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Decorate 39(InvocationId) BuiltIn InvocationId
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2: TypeVoid
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3: TypeFunction 2
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6: TypeFloat 32
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@ -142,33 +146,37 @@ vertices = 3
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24: TypePointer Function 7(fvec3)
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32: TypePointer Input 11
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33(ip): 32(ptr) Variable Input
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35: TypePointer Output 13(HS_OUT)
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36(@entryPointOutput): 35(ptr) Variable Output
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40: 9(int) Constant 2
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41: 9(int) Constant 1
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42: 9(int) Constant 0
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43: TypePointer Input 9(int)
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44(InvocationId): 43(ptr) Variable Input
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46: TypeBool
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35: TypeArray 13(HS_OUT) 10
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36: TypePointer Output 35
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37(@entryPointOutput): 36(ptr) Variable Output
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38: TypePointer Input 9(int)
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39(InvocationId): 38(ptr) Variable Input
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44: TypePointer Output 13(HS_OUT)
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46: 9(int) Constant 2
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47: 9(int) Constant 1
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48: 9(int) Constant 0
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50: TypeBool
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4(main): 2 Function None 3
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5: Label
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31(ip): 12(ptr) Variable Function
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37(param): 12(ptr) Variable Function
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41(param): 12(ptr) Variable Function
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34: 11 Load 33(ip)
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Store 31(ip) 34
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38: 11 Load 31(ip)
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Store 37(param) 38
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39: 13(HS_OUT) FunctionCall 16(@main(struct-VS_OUT-vf31[3];) 37(param)
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Store 36(@entryPointOutput) 39
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ControlBarrier 40 41 42
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45: 9(int) Load 44(InvocationId)
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47: 46(bool) IEqual 45 23
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SelectionMerge 49 None
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BranchConditional 47 48 49
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48: Label
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50: 2 FunctionCall 18(PCF()
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Branch 49
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49: Label
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40: 9(int) Load 39(InvocationId)
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42: 11 Load 31(ip)
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Store 41(param) 42
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43: 13(HS_OUT) FunctionCall 16(@main(struct-VS_OUT-vf31[3];) 41(param)
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45: 44(ptr) AccessChain 37(@entryPointOutput) 40
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Store 45 43
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ControlBarrier 46 47 48
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49: 9(int) Load 39(InvocationId)
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51: 50(bool) IEqual 49 23
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SelectionMerge 53 None
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BranchConditional 51 52 53
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52: Label
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54: 2 FunctionCall 18(PCF()
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Branch 53
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53: Label
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Return
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FunctionEnd
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16(@main(struct-VS_OUT-vf31[3];): 13(HS_OUT) Function None 14
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