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https://github.com/KhronosGroup/glslang
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HLSL: Fix a grammar error related to constructors in parenthetical expressions
This commit is contained in:
steve-lunarg
parent
ff13213547
commit
5964c64b2a
129
Test/baseResults/hlsl.constructexpr.frag.out
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129
Test/baseResults/hlsl.constructexpr.frag.out
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@ -0,0 +1,129 @@
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hlsl.constructexpr.frag
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Shader version: 450
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gl_FragCoord origin is upper left
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0:? Sequence
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0:18 Function Definition: main( (global structure{temp 4-component vector of float color})
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0:4 Function Parameters:
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0:? Sequence
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0:6 Constant:
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0:6 3 (const int)
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0:7 Constant:
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0:7 4 (const int)
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0:8 Constant:
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0:8 5 (const int)
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0:9 Constant:
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0:9 6 (const int)
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0:10 Constant:
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0:10 7 (const int)
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0:11 Constant:
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0:11 8 (const int)
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0:12 Comma (temp 2-component vector of float)
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0:? Constant:
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0:? 9.000000
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0:? 10.000000
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0:? Constant:
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0:? 11.000000
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0:? 12.000000
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0:15 move second child to first child (temp 4-component vector of float)
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0:15 color: direct index for structure (temp 4-component vector of float)
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0:15 'ps_output' (temp structure{temp 4-component vector of float color})
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0:15 Constant:
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0:15 0 (const int)
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0:15 Constant:
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0:15 1.000000
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0:15 1.000000
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0:15 1.000000
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0:15 1.000000
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0:16 Branch: Return with expression
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0:16 'ps_output' (temp structure{temp 4-component vector of float color})
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0:? Linker Objects
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Linked fragment stage:
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Shader version: 450
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gl_FragCoord origin is upper left
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0:? Sequence
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0:18 Function Definition: main( (global structure{temp 4-component vector of float color})
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0:4 Function Parameters:
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0:? Sequence
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0:6 Constant:
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0:6 3 (const int)
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0:7 Constant:
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0:7 4 (const int)
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0:8 Constant:
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0:8 5 (const int)
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0:9 Constant:
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0:9 6 (const int)
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0:10 Constant:
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0:10 7 (const int)
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0:11 Constant:
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0:11 8 (const int)
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0:12 Comma (temp 2-component vector of float)
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0:? Constant:
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0:? 9.000000
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0:? 10.000000
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0:? Constant:
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0:? 11.000000
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0:? 12.000000
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0:15 move second child to first child (temp 4-component vector of float)
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0:15 color: direct index for structure (temp 4-component vector of float)
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0:15 'ps_output' (temp structure{temp 4-component vector of float color})
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0:15 Constant:
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0:15 0 (const int)
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0:15 Constant:
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0:15 1.000000
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0:15 1.000000
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0:15 1.000000
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0:15 1.000000
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0:16 Branch: Return with expression
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0:16 'ps_output' (temp structure{temp 4-component vector of float color})
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0:? Linker Objects
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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 32
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Capability Shader
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1: ExtInstImport "GLSL.std.450"
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MemoryModel Logical GLSL450
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EntryPoint Fragment 4 "main"
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ExecutionMode 4 OriginUpperLeft
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Source HLSL 450
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Name 4 "main"
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Name 22 "PS_OUTPUT"
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MemberName 22(PS_OUTPUT) 0 "color"
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Name 24 "ps_output"
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2: TypeVoid
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3: TypeFunction 2
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6: TypeInt 32 1
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7: 6(int) Constant 3
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8: 6(int) Constant 4
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9: 6(int) Constant 5
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10: 6(int) Constant 6
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11: 6(int) Constant 7
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12: 6(int) Constant 8
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13: TypeFloat 32
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14: TypeVector 13(float) 2
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15: 13(float) Constant 1091567616
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16: 13(float) Constant 1092616192
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17: 14(fvec2) ConstantComposite 15 16
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18: 13(float) Constant 1093664768
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19: 13(float) Constant 1094713344
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20: 14(fvec2) ConstantComposite 18 19
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21: TypeVector 13(float) 4
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22(PS_OUTPUT): TypeStruct 21(fvec4)
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23: TypePointer Function 22(PS_OUTPUT)
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25: 6(int) Constant 0
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26: 13(float) Constant 1065353216
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27: 21(fvec4) ConstantComposite 26 26 26 26
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28: TypePointer Function 21(fvec4)
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4(main): 2 Function None 3
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5: Label
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24(ps_output): 23(ptr) Variable Function
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29: 28(ptr) AccessChain 24(ps_output) 25
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Store 29 27
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30:22(PS_OUTPUT) Load 24(ps_output)
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ReturnValue 30
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FunctionEnd
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17
Test/hlsl.constructexpr.frag
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17
Test/hlsl.constructexpr.frag
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@ -0,0 +1,17 @@
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struct PS_OUTPUT { float4 color : SV_Target0; };
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PS_OUTPUT main()
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{
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// Evaluates to a sequence: 3, 4, 5, 6, 7, 8, and a float2(9,10), float2(11,12) sequence
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(int(3));
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(int(3) + int(1));
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(int(3) + int(1) + int(1));
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(((int(6))));
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(int(7.0));
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((int((2)) ? 8 : 8));
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(float2(9, 10), float2(11, 12));
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PS_OUTPUT ps_output;
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ps_output.color = 1.0;
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return ps_output;
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}
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23
Test/hlsl.init2.frag
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23
Test/hlsl.init2.frag
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@ -0,0 +1,23 @@
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void Test1()
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{
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struct mystruct { float2 a; };
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mystruct test1 = {
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{ 1, 2, }, // test trailing commas
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};
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mystruct test2 = {
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{ { 1, 2, } }, // test unneeded levels
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};
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float test3 = { 1 } ; // test scalar initialization
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}
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struct PS_OUTPUT { float4 color : SV_Target0; };
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PS_OUTPUT main()
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{
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PS_OUTPUT ps_output;
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ps_output.color = 1.0;
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return ps_output;
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}
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@ -80,6 +80,7 @@ INSTANTIATE_TEST_CASE_P(
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{"hlsl.calculatelodunclamped.dx10.frag", "main"},
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{"hlsl.cast.frag", "PixelShaderFunction"},
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{"hlsl.conditional.frag", "PixelShaderFunction"},
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{"hlsl.constructexpr.frag", "main"},
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{"hlsl.discard.frag", "PixelShaderFunction"},
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{"hlsl.doLoop.frag", "PixelShaderFunction"},
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{"hlsl.float1.frag", "PixelShaderFunction"},
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@ -1718,27 +1718,29 @@ bool HlslGrammar::acceptUnaryExpression(TIntermTyped*& node)
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if (acceptTokenClass(EHTokLeftParen)) {
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TType castType;
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if (acceptType(castType)) {
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if (! acceptTokenClass(EHTokRightParen)) {
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expected(")");
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return false;
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if (acceptTokenClass(EHTokRightParen)) {
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// We've matched "(type)" now, get the expression to cast
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TSourceLoc loc = token.loc;
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if (! acceptUnaryExpression(node))
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return false;
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// Hook it up like a constructor
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TFunction* constructorFunction = parseContext.handleConstructorCall(loc, castType);
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if (constructorFunction == nullptr) {
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expected("type that can be constructed");
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return false;
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}
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TIntermTyped* arguments = nullptr;
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parseContext.handleFunctionArgument(constructorFunction, arguments, node);
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node = parseContext.handleFunctionCall(loc, constructorFunction, arguments);
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return true;
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} else {
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// This could be a parenthesized constructor, ala (int(3)), and we just accepted
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// the '(int' part. We must back up twice.
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recedeToken();
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recedeToken();
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}
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// We've matched "(type)" now, get the expression to cast
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TSourceLoc loc = token.loc;
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if (! acceptUnaryExpression(node))
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return false;
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// Hook it up like a constructor
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TFunction* constructorFunction = parseContext.handleConstructorCall(loc, castType);
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if (constructorFunction == nullptr) {
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expected("type that can be constructed");
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return false;
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}
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TIntermTyped* arguments = nullptr;
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parseContext.handleFunctionArgument(constructorFunction, arguments, node);
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node = parseContext.handleFunctionCall(loc, constructorFunction, arguments);
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return true;
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} else {
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// This isn't a type cast, but it still started "(", so if it is a
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// unary expression, it can only be a postfix_expression, so try that.
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@ -39,27 +39,29 @@ namespace glslang {
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void HlslTokenStream::pushPreToken(const HlslToken& tok)
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{
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assert(preTokenStackSize == 0);
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preTokenStack = tok;
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++preTokenStackSize;
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assert(preTokenStackSize < tokenBufferSize);
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preTokenStack[preTokenStackSize++] = tok;
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}
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HlslToken HlslTokenStream::popPreToken()
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{
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assert(preTokenStackSize == 1);
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--preTokenStackSize;
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assert(preTokenStackSize > 0);
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return preTokenStack;
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return preTokenStack[--preTokenStackSize];
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}
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void HlslTokenStream::pushTokenBuffer(const HlslToken& tok)
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{
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tokenBuffer = tok;
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tokenBuffer[tokenBufferPos] = tok;
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tokenBufferPos = (tokenBufferPos+1) % tokenBufferSize;
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}
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HlslToken HlslTokenStream::popTokenBuffer()
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{
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return tokenBuffer;
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// Back up
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tokenBufferPos = (tokenBufferPos+tokenBufferSize-1) % tokenBufferSize;
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return tokenBuffer[tokenBufferPos];
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}
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// Load 'token' with the next token in the stream of tokens.
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@ -43,7 +43,7 @@ namespace glslang {
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class HlslTokenStream {
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public:
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explicit HlslTokenStream(HlslScanContext& scanner)
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: scanner(scanner), preTokenStackSize(0) { }
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: scanner(scanner), preTokenStackSize(0), tokenBufferPos(0) { }
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virtual ~HlslTokenStream() { }
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public:
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@ -62,20 +62,24 @@ namespace glslang {
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HlslScanContext& scanner; // lexical scanner, to get next token
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// This is the number of tokens we can recedeToken() over.
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static const int tokenBufferSize = 2;
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// Previously scanned tokens, returned for future advances,
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// so logically in front of the token stream.
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// Is logically a stack; needs last in last out semantics.
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// Currently implemented as a stack of size 1.
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HlslToken preTokenStack;
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// Currently implemented as a stack of size 2.
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HlslToken preTokenStack[tokenBufferSize];
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int preTokenStackSize;
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void pushPreToken(const HlslToken&);
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HlslToken popPreToken();
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// Previously scanned tokens, not yet return for future advances,
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// Previously scanned tokens, not yet returned for future advances,
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// but available for that.
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// Is logically a fifo for normal advances, and a stack for recession.
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// Currently implemented with an intrinsic size of 1.
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HlslToken tokenBuffer;
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// Currently implemented with an intrinsic size of 2.
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HlslToken tokenBuffer[tokenBufferSize];
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int tokenBufferPos;
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void pushTokenBuffer(const HlslToken&);
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HlslToken popTokenBuffer();
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};
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