858c928ac7
This obsoletes WIP PR #704, which was built on the pre entry point wrapping master. New version here uses entry point wrapping. This is a limited implementation of tessellation shaders. In particular, the following are not functional, and will be added as separate stages to reduce the size of each PR. * patchconstantfunctions accepting per-control-point input values, such as const OutputPatch <hs_out_t, 3> cpv are not implemented. * patchconstantfunctions whose signature requires an aggregate input type such as a structure containing builtin variables. Code to synthesize such calls is not yet present. These restrictions will be relaxed as soon as possible. Simple cases can compile now: see for example Test/hulsl.hull.1.tesc - e.g, writing to inner and outer tessellation factors. PCF invocation is synthesized as an entry point epilogue protected behind a barrier and a test on invocation ID == 0. If there is an existing invocation ID variable it will be used, otherwise one is added to the linkage. The PCF and the shader EP interfaces are unioned and builtins appearing in the PCF but not the EP are also added to the linkage and synthesized as shader inputs. Parameter matching to (eventually arbitrary) PCF signatures is by builtin variable type. Any user variables in the PCF signature will result in an error. Overloaded PCF functions will also result in an error. [domain()], [partitioning()], [outputtopology()], [outputcontrolpoints()], and [patchconstantfunction()] attributes to the shader entry point are in place, with the exception of the Pow2 partitioning mode.
187 lines
9.2 KiB
Plaintext
187 lines
9.2 KiB
Plaintext
hlsl.hull.void.tesc
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Shader version: 450
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vertices = 3
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0:? Sequence
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0:26 Function Definition: @main(struct-VS_OUT-vf31[3]; (temp structure{temp 3-component vector of float cpoint})
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0:26 Function Parameters:
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0:26 'ip' (in 3-element array of structure{temp 3-component vector of float cpoint})
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0:? Sequence
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0:28 move second child to first child (temp 3-component vector of float)
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0:28 cpoint: direct index for structure (temp 3-component vector of float)
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0:28 'output' (temp structure{temp 3-component vector of float cpoint})
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0:28 Constant:
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0:28 0 (const int)
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0:28 cpoint: direct index for structure (temp 3-component vector of float)
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0:28 direct index (temp structure{temp 3-component vector of float cpoint})
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0:28 'ip' (in 3-element array of structure{temp 3-component vector of float cpoint})
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0:28 Constant:
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0:28 0 (const int)
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0:28 Constant:
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0:28 0 (const int)
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0:29 Branch: Return with expression
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0:29 'output' (temp structure{temp 3-component vector of float cpoint})
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0:26 Function Definition: main( (temp void)
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0:26 Function Parameters:
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0:? Sequence
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0:26 move second child to first child (temp 3-element array of 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:? '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 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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0:? Test condition and select (temp void)
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0:? Condition
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0:? Compare Equal (temp bool)
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0:? 'InvocationId' (in uint InvocationID)
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0:? Constant:
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0:? 0 (const int)
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0:? true case
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0:? Function Call: PCF( (temp void)
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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:? '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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Linked tessellation control stage:
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Shader version: 450
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vertices = 3
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0:? Sequence
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0:26 Function Definition: @main(struct-VS_OUT-vf31[3]; (temp structure{temp 3-component vector of float cpoint})
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0:26 Function Parameters:
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0:26 'ip' (in 3-element array of structure{temp 3-component vector of float cpoint})
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0:? Sequence
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0:28 move second child to first child (temp 3-component vector of float)
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0:28 cpoint: direct index for structure (temp 3-component vector of float)
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0:28 'output' (temp structure{temp 3-component vector of float cpoint})
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0:28 Constant:
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0:28 0 (const int)
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0:28 cpoint: direct index for structure (temp 3-component vector of float)
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0:28 direct index (temp structure{temp 3-component vector of float cpoint})
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0:28 'ip' (in 3-element array of structure{temp 3-component vector of float cpoint})
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0:28 Constant:
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0:28 0 (const int)
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0:28 Constant:
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0:28 0 (const int)
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0:29 Branch: Return with expression
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0:29 'output' (temp structure{temp 3-component vector of float cpoint})
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0:26 Function Definition: main( (temp void)
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0:26 Function Parameters:
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0:? Sequence
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0:26 move second child to first child (temp 3-element array of 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:? '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 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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0:? Test condition and select (temp void)
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0:? Condition
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0:? Compare Equal (temp bool)
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0:? 'InvocationId' (in uint InvocationID)
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0:? Constant:
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0:? 0 (const int)
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0:? true case
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0:? Function Call: PCF( (temp void)
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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:? '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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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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ExecutionMode 4 OutputVertices 3
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Name 4 "main"
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Name 8 "VS_OUT"
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MemberName 8(VS_OUT) 0 "cpoint"
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Name 13 "HS_OUT"
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MemberName 13(HS_OUT) 0 "cpoint"
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Name 16 "@main(struct-VS_OUT-vf31[3];"
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Name 15 "ip"
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Name 18 "PCF("
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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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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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2: TypeVoid
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3: TypeFunction 2
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6: TypeFloat 32
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7: TypeVector 6(float) 3
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8(VS_OUT): TypeStruct 7(fvec3)
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9: TypeInt 32 0
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10: 9(int) Constant 3
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11: TypeArray 8(VS_OUT) 10
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12: TypePointer Function 11
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13(HS_OUT): TypeStruct 7(fvec3)
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14: TypeFunction 13(HS_OUT) 12(ptr)
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20: TypePointer Function 13(HS_OUT)
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22: TypeInt 32 1
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23: 22(int) Constant 0
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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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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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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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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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15(ip): 12(ptr) FunctionParameter
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17: Label
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21(output): 20(ptr) Variable Function
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25: 24(ptr) AccessChain 15(ip) 23 23
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26: 7(fvec3) Load 25
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27: 24(ptr) AccessChain 21(output) 23
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Store 27 26
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28: 13(HS_OUT) Load 21(output)
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ReturnValue 28
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FunctionEnd
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18(PCF(): 2 Function None 3
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19: Label
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Return
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FunctionEnd
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