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HLSL: add optional position.Y inversion

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Adds command line options:

   --invert-y
   --iy

(synonyms) which invert position.Y on vertex shader output.  Handles these cases:

* Direct single variable return
* Member of direct returned struct
* Single variable output parameter
* Member of struct output parameter

API:

    // Enables position.Y output negation in vertex shader
    void TShader::setInvertY(bool invert);

Fixes #1173
This commit is contained in:
LoopDawg 2017-12-06 16:52:03 -07:00
parent 471bfed062
commit b22c069f7a
13 changed files with 549 additions and 1 deletions
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113
Test/baseResults/hlsl.y-negate-1.vert.out Normal file
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hlsl.y-negate-1.vert
Shader version: 500
0:? Sequence
0:7 Function Definition: @main( ( temp 4-component vector of float)
0:7 Function Parameters:
0:? Sequence
0:8 Branch: Return with expression
0:8 pos: direct index for structure ( uniform 4-component vector of float)
0:8 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float pos})
0:8 Constant:
0:8 0 (const uint)
0:7 Function Definition: main( ( temp void)
0:7 Function Parameters:
0:? Sequence
0:7 Sequence
0:7 move second child to first child ( temp 4-component vector of float)
0:7 '@position' ( temp 4-component vector of float)
0:7 Function Call: @main( ( temp 4-component vector of float)
0:7 move second child to first child ( temp float)
0:7 direct index ( temp float)
0:7 '@position' ( temp 4-component vector of float)
0:7 Constant:
0:7 1 (const int)
0:7 Negate value ( temp float)
0:7 direct index ( temp float)
0:7 '@position' ( temp 4-component vector of float)
0:7 Constant:
0:7 1 (const int)
0:7 move second child to first child ( temp 4-component vector of float)
0:? '@entryPointOutput' ( out 4-component vector of float Position)
0:7 '@position' ( temp 4-component vector of float)
0:? Linker Objects
0:? 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float pos})
0:? '@entryPointOutput' ( out 4-component vector of float Position)
Linked vertex stage:
Shader version: 500
0:? Sequence
0:7 Function Definition: @main( ( temp 4-component vector of float)
0:7 Function Parameters:
0:? Sequence
0:8 Branch: Return with expression
0:8 pos: direct index for structure ( uniform 4-component vector of float)
0:8 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float pos})
0:8 Constant:
0:8 0 (const uint)
0:7 Function Definition: main( ( temp void)
0:7 Function Parameters:
0:? Sequence
0:7 Sequence
0:7 move second child to first child ( temp 4-component vector of float)
0:7 '@position' ( temp 4-component vector of float)
0:7 Function Call: @main( ( temp 4-component vector of float)
0:7 move second child to first child ( temp float)
0:7 direct index ( temp float)
0:7 '@position' ( temp 4-component vector of float)
0:7 Constant:
0:7 1 (const int)
0:7 Negate value ( temp float)
0:7 direct index ( temp float)
0:7 '@position' ( temp 4-component vector of float)
0:7 Constant:
0:7 1 (const int)
0:7 move second child to first child ( temp 4-component vector of float)
0:? '@entryPointOutput' ( out 4-component vector of float Position)
0:7 '@position' ( temp 4-component vector of float)
0:? Linker Objects
0:? 'anon@0' (layout( row_major std140) uniform block{ uniform 4-component vector of float pos})
0:? '@entryPointOutput' ( out 4-component vector of float Position)
// Module Version 10000
// Generated by (magic number): 80002
// Id's are bound by 41
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Vertex 4 "main" 32
Source HLSL 500
Name 4 "main"
Name 11 "$Global"
MemberName 11($Global) 0 "pos"
Name 13 ""
Name 32 "@entryPointOutput"
MemberDecorate 11($Global) 0 Offset 0
Decorate 11($Global) Block
Decorate 13 DescriptorSet 0
Decorate 32(@entryPointOutput) BuiltIn Position
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
7: TypeVector 6(float) 4
11($Global): TypeStruct 7(fvec4)
12: TypePointer Uniform 11($Global)
13: 12(ptr) Variable Uniform
14: TypeInt 32 1
15: 14(int) Constant 0
16: TypePointer Uniform 7(fvec4)
31: TypePointer Output 7(fvec4)
32(@entryPointOutput): 31(ptr) Variable Output
4(main): 2 Function None 3
5: Label
35: 16(ptr) AccessChain 13 15
36: 7(fvec4) Load 35
38: 6(float) CompositeExtract 36 1
29: 6(float) FNegate 38
40: 7(fvec4) CompositeInsert 29 36 1
Store 32(@entryPointOutput) 40
Return
FunctionEnd