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SPV: Partially address #2293: correct "const in" precision matching.

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Track whether formal parameters declare reduced precision and match
that with arguments, and if they differ, make a copy to promote the
precision.
This commit is contained in:
John Kessenich
2020-06-26 08:37:06 -06:00
parent fbb9dc2cf1
commit 4df10335e6
6 changed files with 94 additions and 2 deletions
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59
Test/baseResults/spv.precisionArgs.frag.out Executable file
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spv.precisionArgs.frag
// Module Version 10000
// Generated by (magic number): 8000a
// Id's are bound by 27
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Fragment 4 "main"
ExecutionMode 4 OriginUpperLeft
Source ESSL 310
Name 4 "main"
Name 10 "fooConst(f1;f1;"
Name 8 "f"
Name 9 "g"
Name 13 "aM"
Name 15 "bM"
Name 17 "arg"
Name 20 "aH"
Name 22 "bH"
Name 24 "arg"
Decorate 8(f) RelaxedPrecision
Decorate 13(aM) RelaxedPrecision
Decorate 14 RelaxedPrecision
Decorate 15(bM) RelaxedPrecision
Decorate 16 RelaxedPrecision
Decorate 24(arg) RelaxedPrecision
Decorate 25 RelaxedPrecision
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
7: TypeFunction 2 6(float) 6(float)
12: TypePointer Function 6(float)
4(main): 2 Function None 3
5: Label
13(aM): 12(ptr) Variable Function
15(bM): 12(ptr) Variable Function
17(arg): 12(ptr) Variable Function
20(aH): 12(ptr) Variable Function
22(bH): 12(ptr) Variable Function
24(arg): 12(ptr) Variable Function
14: 6(float) Load 13(aM)
16: 6(float) Load 15(bM)
Store 17(arg) 16
18: 6(float) Load 17(arg)
19: 2 FunctionCall 10(fooConst(f1;f1;) 14 18
21: 6(float) Load 20(aH)
23: 6(float) Load 22(bH)
Store 24(arg) 21
25: 6(float) Load 24(arg)
26: 2 FunctionCall 10(fooConst(f1;f1;) 25 23
Return
FunctionEnd
10(fooConst(f1;f1;): 2 Function None 7
8(f): 6(float) FunctionParameter
9(g): 6(float) FunctionParameter
11: Label
Return
FunctionEnd