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HLSL: Support 1.#INF and -1.#INF syntax.

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This commit is contained in:
John Kessenich 2017-04-12 13:26:57 -06:00
parent b5e739c20e
commit 776c515ea5
8 changed files with 256 additions and 16 deletions
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2
Test/baseResults/constFold.frag.out
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@ -179,7 +179,7 @@ ERROR: node is still EOpNull!
0:83 Constant: 0:83 Constant:
0:83 2147483647 (const int) 0:83 2147483647 (const int)
0:84 Constant: 0:84 Constant:
0:84 inf 0:84 +1.#INF
0:88 Constant: 0:88 Constant:
0:88 2 (const uint) 0:88 2 (const uint)
0:88 3 (const uint) 0:88 3 (const uint)

172
Test/baseResults/hlsl.inf.vert.out Executable file
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@ -0,0 +1,172 @@
hlsl.inf.vert
Shader version: 500
0:? Sequence
0:2 Function Definition: @main( ( temp 4-component vector of float)
0:2 Function Parameters:
0:? Sequence
0:3 Sequence
0:3 move second child to first child ( temp float)
0:3 'f1' ( temp float)
0:3 Constant:
0:3 -1.#INF
0:4 Sequence
0:4 move second child to first child ( temp float)
0:4 'f2' ( temp float)
0:4 Constant:
0:4 +1.#INF
0:5 Sequence
0:5 move second child to first child ( temp float)
0:5 'f3' ( temp float)
0:5 Constant:
0:5 +1.#INF
0:6 Sequence
0:6 move second child to first child ( temp float)
0:6 'f4' ( temp float)
0:6 add ( temp float)
0:6 component-wise multiply ( temp float)
0:6 'f2' ( temp float)
0:6 Constant:
0:6 +1.#INF
0:6 Constant:
0:6 +1.#INF
0:10 Branch: Return with expression
0:10 Construct vec4 ( temp 4-component vector of float)
0:10 add ( temp float)
0:10 add ( temp float)
0:10 add ( temp float)
0:10 add ( temp float)
0:10 add ( temp float)
0:10 'f1' ( temp float)
0:10 'f2' ( temp float)
0:10 'f3' ( temp float)
0:10 'f4' ( temp float)
0:10 Constant:
0:10 -1.#INF
0:10 Constant:
0:10 1.#IND
0:2 Function Definition: main( ( temp void)
0:2 Function Parameters:
0:? Sequence
0:2 move second child to first child ( temp 4-component vector of float)
0:? '@entryPointOutput' ( out 4-component vector of float Position)
0:2 Function Call: @main( ( temp 4-component vector of float)
0:? Linker Objects
0:? '@entryPointOutput' ( out 4-component vector of float Position)
Linked vertex stage:
Shader version: 500
0:? Sequence
0:2 Function Definition: @main( ( temp 4-component vector of float)
0:2 Function Parameters:
0:? Sequence
0:3 Sequence
0:3 move second child to first child ( temp float)
0:3 'f1' ( temp float)
0:3 Constant:
0:3 -1.#INF
0:4 Sequence
0:4 move second child to first child ( temp float)
0:4 'f2' ( temp float)
0:4 Constant:
0:4 +1.#INF
0:5 Sequence
0:5 move second child to first child ( temp float)
0:5 'f3' ( temp float)
0:5 Constant:
0:5 +1.#INF
0:6 Sequence
0:6 move second child to first child ( temp float)
0:6 'f4' ( temp float)
0:6 add ( temp float)
0:6 component-wise multiply ( temp float)
0:6 'f2' ( temp float)
0:6 Constant:
0:6 +1.#INF
0:6 Constant:
0:6 +1.#INF
0:10 Branch: Return with expression
0:10 Construct vec4 ( temp 4-component vector of float)
0:10 add ( temp float)
0:10 add ( temp float)
0:10 add ( temp float)
0:10 add ( temp float)
0:10 add ( temp float)
0:10 'f1' ( temp float)
0:10 'f2' ( temp float)
0:10 'f3' ( temp float)
0:10 'f4' ( temp float)
0:10 Constant:
0:10 -1.#INF
0:10 Constant:
0:10 1.#IND
0:2 Function Definition: main( ( temp void)
0:2 Function Parameters:
0:? Sequence
0:2 move second child to first child ( temp 4-component vector of float)
0:? '@entryPointOutput' ( out 4-component vector of float Position)
0:2 Function Call: @main( ( temp 4-component vector of float)
0:? Linker Objects
0:? '@entryPointOutput' ( out 4-component vector of float Position)
// Module Version 10000
// Generated by (magic number): 80001
// Id's are bound by 37
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Vertex 4 "main" 35
Source HLSL 500
Name 4 "main"
Name 9 "@main("
Name 12 "f1"
Name 14 "f2"
Name 16 "f3"
Name 17 "f4"
Name 35 "@entryPointOutput"
Decorate 35(@entryPointOutput) BuiltIn Position
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
7: TypeVector 6(float) 4
8: TypeFunction 7(fvec4)
11: TypePointer Function 6(float)
13: 6(float) Constant 4286578688
15: 6(float) Constant 2139095040
29: 6(float) Constant 4290772992
34: TypePointer Output 7(fvec4)
35(@entryPointOutput): 34(ptr) Variable Output
4(main): 2 Function None 3
5: Label
36: 7(fvec4) FunctionCall 9(@main()
Store 35(@entryPointOutput) 36
Return
FunctionEnd
9(@main(): 7(fvec4) Function None 8
10: Label
12(f1): 11(ptr) Variable Function
14(f2): 11(ptr) Variable Function
16(f3): 11(ptr) Variable Function
17(f4): 11(ptr) Variable Function
Store 12(f1) 13
Store 14(f2) 15
Store 16(f3) 15
18: 6(float) Load 14(f2)
19: 6(float) FMul 18 15
20: 6(float) FAdd 19 15
Store 17(f4) 20
21: 6(float) Load 12(f1)
22: 6(float) Load 14(f2)
23: 6(float) FAdd 21 22
24: 6(float) Load 16(f3)
25: 6(float) FAdd 23 24
26: 6(float) Load 17(f4)
27: 6(float) FAdd 25 26
28: 6(float) FAdd 27 13
30: 6(float) FAdd 28 29
31: 7(fvec4) CompositeConstruct 30 30 30 30
ReturnValue 31
FunctionEnd

11
Test/hlsl.inf.vert Executable file
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@ -0,0 +1,11 @@
float4 main() : SV_Position
{
float f1 = -1.#INF;
float f2 = 1.#INF;
float f3 = +1.#INF;
float f4 = f2 * 1.#INF + 1.#INF;
const float f5 = -1.#INF;
const float f6 = f5 * 0.0f;
return (float4)(f1 + f2 + f3 + f4 + f5 + f6);
}

4
glslang/Include/revision.h
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@ -2,5 +2,5 @@
// For the version, it uses the latest git tag followed by the number of commits. // For the version, it uses the latest git tag followed by the number of commits.
// For the date, it uses the current date (when then script is run). // For the date, it uses the current date (when then script is run).
#define GLSLANG_REVISION "Overload400-PrecQual.1994" #define GLSLANG_REVISION "Overload400-PrecQual.1995"
#define GLSLANG_DATE "11-Apr-2017" #define GLSLANG_DATE "12-Apr-2017"

39
glslang/MachineIndependent/intermOut.cpp
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@ -45,11 +45,31 @@
namespace { namespace {
bool is_positive_infinity(double x) { bool IsInfinity(double x) {
#ifdef _MSC_VER #ifdef _MSC_VER
return _fpclass(x) == _FPCLASS_PINF; switch (_fpclass(x)) {
case _FPCLASS_NINF:
case _FPCLASS_PINF:
return true;
default:
return false;
}
#else #else
return std::isinf(x) && (x >= 0); return std::isinf(x);
#endif
}
bool IsNan(double x) {
#ifdef _MSC_VER
switch (_fpclass(x)) {
case _FPCLASS_SNAN:
case _FPCLASS_QNAN:
return true;
default:
return false;
}
#else
return std::isnan(x);
#endif #endif
} }
@ -694,11 +714,14 @@ static void OutputConstantUnion(TInfoSink& out, const TIntermTyped* node, const
#endif #endif
{ {
const double value = constUnion[i].getDConst(); const double value = constUnion[i].getDConst();
// Print infinity in a portable way, for test stability. // Print infinities and NaNs in a portable way.
// Other cases may be needed in the future: negative infinity, if (IsInfinity(value)) {
// and NaNs. if (value < 0)
if (is_positive_infinity(value)) out.debug << "-1.#INF\n";
out.debug << "inf\n"; else
out.debug << "+1.#INF\n";
} else if (IsNan(value))
out.debug << "1.#IND\n";
else { else {
const int maxSize = 300; const int maxSize = 300;
char buf[maxSize]; char buf[maxSize];

14
glslang/MachineIndependent/preprocessor/PpContext.h
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@ -92,7 +92,7 @@ namespace glslang {
class TPpToken { class TPpToken {
public: public:
TPpToken() : space(false), ival(0), dval(0.0), i64val(0) TPpToken() : space(false), i64val(0)
{ {
loc.init(); loc.init();
name[0] = 0; name[0] = 0;
@ -108,10 +108,14 @@ public:
bool operator!=(const TPpToken& right) { return ! operator==(right); } bool operator!=(const TPpToken& right) { return ! operator==(right); }
TSourceLoc loc; TSourceLoc loc;
bool space; // true if a space (for white space or a removed comment) should also be recognized, in front of the token returned bool space; // true if a space (for white space or a removed comment) should also be recognized, in front of the token returned
int ival;
double dval; union {
long long i64val; int ival;
double dval;
long long i64val;
};
char name[MaxTokenLength + 1]; char name[MaxTokenLength + 1];
}; };

29
glslang/MachineIndependent/preprocessor/PpScanner.cpp
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@ -124,6 +124,35 @@ int TPpContext::lFloatConst(int len, int ch, TPpToken* ppToken)
HasDecimalOrExponent = true; HasDecimalOrExponent = true;
saveName(ch); saveName(ch);
ch = getChar(); ch = getChar();
// 1.#INF or -1.#INF
if (ch == '#') {
if ((len < 2) ||
(len == 2 && ppToken->name[0] != '1') ||
(len == 3 && ppToken->name[1] != '1' && !(ppToken->name[0] == '-' || ppToken->name[0] == '+')) ||
(len > 3))
parseContext.ppError(ppToken->loc, "unexpected use of", "#", "");
else {
// we have 1.# or -1.# or +1.#, check for 'INF'
if ((ch = getChar()) != 'I' ||
(ch = getChar()) != 'N' ||
(ch = getChar()) != 'F')
parseContext.ppError(ppToken->loc, "expected 'INF'", "#", "");
else {
// we have [+-].#INF, and we are targeting IEEE 754, so wrap it up:
saveName('I');
saveName('N');
saveName('F');
ppToken->name[len] = '\0';
if (ppToken->name[0] == '-')
ppToken->i64val = 0xfff0000000000000; // -Infinity
else
ppToken->i64val = 0x7ff0000000000000; // +Infinity
return PpAtomConstFloat;
}
}
}
while (ch >= '0' && ch <= '9') { while (ch >= '0' && ch <= '9') {
saveName(ch); saveName(ch);
ch = getChar(); ch = getChar();

1
gtests/Hlsl.FromFile.cpp
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@ -134,6 +134,7 @@ INSTANTIATE_TEST_CASE_P(
{"hlsl.identifier.sample.frag", "main"}, {"hlsl.identifier.sample.frag", "main"},
{"hlsl.if.frag", "PixelShaderFunction"}, {"hlsl.if.frag", "PixelShaderFunction"},
{"hlsl.implicitBool.frag", "main"}, {"hlsl.implicitBool.frag", "main"},
{"hlsl.inf.vert", "main"},
{"hlsl.inoutquals.frag", "main"}, {"hlsl.inoutquals.frag", "main"},
{"hlsl.init.frag", "ShaderFunction"}, {"hlsl.init.frag", "ShaderFunction"},
{"hlsl.init2.frag", "main"}, {"hlsl.init2.frag", "main"},