[naga wgsl-in] Implement any() and all() during const evaluation

naga/src/proc/constant_evaluator.rs

@@ -4,8 +4,8 @@ use arrayvec::ArrayVec;
 
 use crate::{
     arena::{Arena, Handle, HandleVec, UniqueArena},
-    ArraySize, BinaryOperator, Constant, Expression, Literal, Override, ScalarKind, Span, Type,
-    TypeInner, UnaryOperator,
+    ArraySize, BinaryOperator, Constant, Expression, Literal, Override, RelationalFunction,
+    ScalarKind, Span, Type, TypeInner, UnaryOperator,
 };
 
 /// A macro that allows dollar signs (`$`) to be emitted by other macros. Useful for generating
@@ -547,6 +547,8 @@ pub enum ConstantEvaluatorError {
     InvalidMathArg,
     #[error("{0:?} built-in function expects {1:?} arguments but {2:?} were supplied")]
     InvalidMathArgCount(crate::MathFunction, usize, usize),
+    #[error("Cannot apply relational function to type")]
+    InvalidRelationalArg(RelationalFunction),
     #[error("value of `low` is greater than `high` for clamp built-in function")]
     InvalidClamp,
     #[error("Splat is defined only on scalar values")]
@@ -931,9 +933,10 @@ impl<'a> ConstantEvaluator<'a> {
             Expression::Select { .. } => Err(ConstantEvaluatorError::NotImplemented(
                 "select built-in function".into(),
             )),
-            Expression::Relational { fun, .. } => Err(ConstantEvaluatorError::NotImplemented(
-                format!("{fun:?} built-in function"),
-            )),
+            Expression::Relational { fun, argument } => {
+                let argument = self.check_and_get(argument)?;
+                self.relational(fun, argument, span)
+            }
             Expression::ArrayLength(expr) => match self.behavior {
                 Behavior::Wgsl(_) => Err(ConstantEvaluatorError::ArrayLength),
                 Behavior::Glsl(_) => {
@@ -2103,6 +2106,41 @@ impl<'a> ConstantEvaluator<'a> {
         Ok(Expression::Compose { ty, components })
     }
 
+    fn relational(
+        &mut self,
+        fun: RelationalFunction,
+        arg: Handle<Expression>,
+        span: Span,
+    ) -> Result<Handle<Expression>, ConstantEvaluatorError> {
+        let arg = self.eval_zero_value_and_splat(arg, span)?;
+        match fun {
+            RelationalFunction::All | RelationalFunction::Any => match self.expressions[arg] {
+                Expression::Literal(Literal::Bool(_)) => Ok(arg),
+                Expression::Compose { ty, ref components }
+                    if matches!(self.types[ty].inner, TypeInner::Vector { .. }) =>
+                {
+                    let components =
+                        crate::proc::flatten_compose(ty, components, self.expressions, self.types)
+                            .map(|component| match self.expressions[component] {
+                                Expression::Literal(Literal::Bool(val)) => Ok(val),
+                                _ => Err(ConstantEvaluatorError::InvalidRelationalArg(fun)),
+                            })
+                            .collect::<Result<ArrayVec<bool, { crate::VectorSize::MAX }>, _>>()?;
+                    let result = match fun {
+                        RelationalFunction::All => components.iter().all(|c| *c),
+                        RelationalFunction::Any => components.iter().any(|c| *c),
+                        _ => unreachable!(),
+                    };
+                    self.register_evaluated_expr(Expression::Literal(Literal::Bool(result)), span)
+                }
+                _ => Err(ConstantEvaluatorError::InvalidRelationalArg(fun)),
+            },
+            _ => Err(ConstantEvaluatorError::NotImplemented(format!(
+                "{fun:?} built-in function"
+            ))),
+        }
+    }
+
     /// Deep copy `expr` from `expressions` into `self.expressions`.
     ///
     /// Return the root of the new copy.

naga/tests/in/const-exprs.wgsl

@@ -1,5 +1,7 @@
 const TWO: u32 = 2u;
 const THREE: i32 = 3i;
+const TRUE = true;
+const FALSE = false;
 
 @compute @workgroup_size(TWO, THREE, TWO - 1u)
 fn main() {
@@ -94,3 +96,16 @@ fn compose_vector_zero_val_binop() {
     var b = vec3(vec2i(), 0) + vec3(0, 1, 2);
     var c = vec3(vec2i(), 2) + vec3(1, vec2i());
 }
+
+fn relational() {
+    // Test scalar and vector forms of any() and all(), with a mixture of
+    // consts, literals, zero-values, composes, and splats.
+    var scalar_any_false = any(false);
+    var scalar_any_true  = any(true);
+    var scalar_all_false = all(false);
+    var scalar_all_true  = all(true);
+    var vec_any_false    = any(vec4<bool>());
+    var vec_any_true     = any(vec4(bool(), true, vec2(FALSE)));
+    var vec_all_false    = all(vec4(vec3(vec2<bool>(), TRUE), false));
+    var vec_all_true     = all(vec4(true));
+}

naga/tests/out/glsl/const-exprs.main.Compute.glsl

@@ -7,6 +7,8 @@ layout(local_size_x = 2, local_size_y = 3, local_size_z = 1) in;
 
 const uint TWO = 2u;
 const int THREE = 3;
+const bool TRUE = true;
+const bool FALSE = false;
 const int FOUR = 4;
 const int FOUR_ALIAS = 4;
 const int TEST_CONSTANT_ADDITION = 8;
@@ -93,6 +95,18 @@ void compose_vector_zero_val_binop() {
     return;
 }
 
+void relational() {
+    bool scalar_any_false = false;
+    bool scalar_any_true = true;
+    bool scalar_all_false = false;
+    bool scalar_all_true = true;
+    bool vec_any_false = false;
+    bool vec_any_true = true;
+    bool vec_all_false = false;
+    bool vec_all_true = true;
+    return;
+}
+
 void main() {
     swizzle_of_compose();
     index_of_compose();

naga/tests/out/hlsl/const-exprs.hlsl

@@ -1,5 +1,7 @@
 static const uint TWO = 2u;
 static const int THREE = int(3);
+static const bool TRUE = true;
+static const bool FALSE = false;
 static const int FOUR = int(4);
 static const int FOUR_ALIAS = int(4);
 static const int TEST_CONSTANT_ADDITION = int(8);
@@ -102,6 +104,20 @@ void compose_vector_zero_val_binop()
     return;
 }
 
+void relational()
+{
+    bool scalar_any_false = false;
+    bool scalar_any_true = true;
+    bool scalar_all_false = false;
+    bool scalar_all_true = true;
+    bool vec_any_false = false;
+    bool vec_any_true = true;
+    bool vec_all_false = false;
+    bool vec_all_true = true;
+
+    return;
+}
+
 [numthreads(2, 3, 1)]
 void main()
 {

naga/tests/out/msl/const-exprs.msl

@@ -6,6 +6,8 @@ using metal::uint;
 
 constant uint TWO = 2u;
 constant int THREE = 3;
+constant bool TRUE = true;
+constant bool FALSE = false;
 constant int FOUR = 4;
 constant int FOUR_ALIAS = 4;
 constant int TEST_CONSTANT_ADDITION = 8;
@@ -101,6 +103,19 @@ void compose_vector_zero_val_binop(
     return;
 }
 
+void relational(
+) {
+    bool scalar_any_false = false;
+    bool scalar_any_true = true;
+    bool scalar_all_false = false;
+    bool scalar_all_true = true;
+    bool vec_any_false = false;
+    bool vec_any_true = true;
+    bool vec_all_false = false;
+    bool vec_all_true = true;
+    return;
+}
+
 kernel void main_(
 ) {
     swizzle_of_compose();

naga/tests/out/spv/const-exprs.spvasm

@@ -1,66 +1,67 @@
 ; SPIR-V
 ; Version: 1.1
 ; Generator: rspirv
-; Bound: 120
+; Bound: 132
 OpCapability Shader
 %1 = OpExtInstImport "GLSL.std.450"
 OpMemoryModel Logical GLSL450
-OpEntryPoint GLCompute %111 "main"
-OpExecutionMode %111 LocalSize 2 3 1
+OpEntryPoint GLCompute %123 "main"
+OpExecutionMode %123 LocalSize 2 3 1
 %2 = OpTypeVoid
 %3 = OpTypeInt 32 0
 %4 = OpTypeInt 32 1
-%5 = OpTypeVector %4 4
-%6 = OpTypeFloat 32
-%7 = OpTypeVector %6 4
-%8 = OpTypeVector %6 2
-%10 = OpTypeBool
-%9 = OpTypeVector %10 2
+%5 = OpTypeBool
+%6 = OpTypeVector %4 4
+%7 = OpTypeFloat 32
+%8 = OpTypeVector %7 4
+%9 = OpTypeVector %7 2
+%10 = OpTypeVector %5 2
 %11 = OpTypeVector %4 3
 %12 = OpConstant  %3  2
 %13 = OpConstant  %4  3
-%14 = OpConstant  %4  4
-%15 = OpConstant  %4  8
-%16 = OpConstant  %6  3.141
-%17 = OpConstant  %6  6.282
-%18 = OpConstant  %6  0.44444445
-%19 = OpConstant  %6  0.0
-%20 = OpConstantComposite  %7  %18 %19 %19 %19
-%21 = OpConstant  %4  0
-%22 = OpConstant  %4  1
-%23 = OpConstant  %4  2
-%24 = OpConstant  %6  4.0
-%25 = OpConstant  %6  5.0
-%26 = OpConstantComposite  %8  %24 %25
-%27 = OpConstantTrue  %10
-%28 = OpConstantFalse  %10
-%29 = OpConstantComposite  %9  %27 %28
+%14 = OpConstantTrue  %5
+%15 = OpConstantFalse  %5
+%16 = OpConstant  %4  4
+%17 = OpConstant  %4  8
+%18 = OpConstant  %7  3.141
+%19 = OpConstant  %7  6.282
+%20 = OpConstant  %7  0.44444445
+%21 = OpConstant  %7  0.0
+%22 = OpConstantComposite  %8  %20 %21 %21 %21
+%23 = OpConstant  %4  0
+%24 = OpConstant  %4  1
+%25 = OpConstant  %4  2
+%26 = OpConstant  %7  4.0
+%27 = OpConstant  %7  5.0
+%28 = OpConstantComposite  %9  %26 %27
+%29 = OpConstantComposite  %10  %14 %15
 %32 = OpTypeFunction %2
-%33 = OpConstantComposite  %5  %14 %13 %23 %22
-%35 = OpTypePointer Function %5
+%33 = OpConstantComposite  %6  %16 %13 %25 %24
+%35 = OpTypePointer Function %6
 %40 = OpTypePointer Function %4
 %44 = OpConstant  %4  6
 %49 = OpConstant  %4  30
 %50 = OpConstant  %4  70
 %53 = OpConstantNull  %4
 %55 = OpConstantNull  %4
-%58 = OpConstantNull  %5
+%58 = OpConstantNull  %6
 %69 = OpConstant  %4  -4
-%70 = OpConstantComposite  %5  %69 %69 %69 %69
-%79 = OpConstant  %6  1.0
-%80 = OpConstant  %6  2.0
-%81 = OpConstantComposite  %7  %80 %79 %79 %79
-%83 = OpTypePointer Function %7
+%70 = OpConstantComposite  %6  %69 %69 %69 %69
+%79 = OpConstant  %7  1.0
+%80 = OpConstant  %7  2.0
+%81 = OpConstantComposite  %8  %80 %79 %79 %79
+%83 = OpTypePointer Function %8
 %88 = OpTypeFunction %3 %4
 %89 = OpConstant  %3  10
 %90 = OpConstant  %3  20
 %91 = OpConstant  %3  30
 %92 = OpConstant  %3  0
 %99 = OpConstantNull  %3
-%102 = OpConstantComposite  %11  %22 %22 %22
-%103 = OpConstantComposite  %11  %21 %22 %23
-%104 = OpConstantComposite  %11  %22 %21 %23
+%102 = OpConstantComposite  %11  %24 %24 %24
+%103 = OpConstantComposite  %11  %23 %24 %25
+%104 = OpConstantComposite  %11  %24 %23 %25
 %106 = OpTypePointer Function %11
+%113 = OpTypePointer Function %5
 %31 = OpFunction  %2  None %32
 %30 = OpLabel
 %34 = OpVariable  %35  Function %33
@@ -70,7 +71,7 @@ OpReturn
 OpFunctionEnd
 %38 = OpFunction  %2  None %32
 %37 = OpLabel
-%39 = OpVariable  %40  Function %23
+%39 = OpVariable  %40  Function %25
 OpBranch %41
 %41 = OpLabel
 OpReturn
@@ -99,7 +100,7 @@ OpStore %54 %61
 %63 = OpLoad  %4  %52
 %64 = OpLoad  %4  %54
 %65 = OpLoad  %4  %56
-%66 = OpCompositeConstruct  %5  %62 %63 %64 %65
+%66 = OpCompositeConstruct  %6  %62 %63 %64 %65
 OpStore %57 %66
 OpReturn
 OpFunctionEnd
@@ -153,14 +154,28 @@ OpReturn
 OpFunctionEnd
 %111 = OpFunction  %2  None %32
 %110 = OpLabel
-OpBranch %112
-%112 = OpLabel
-%113 = OpFunctionCall  %2  %31
-%114 = OpFunctionCall  %2  %38
-%115 = OpFunctionCall  %2  %43
-%116 = OpFunctionCall  %2  %48
-%117 = OpFunctionCall  %2  %68
-%118 = OpFunctionCall  %2  %74
-%119 = OpFunctionCall  %2  %78
+%119 = OpVariable  %113  Function %15
+%116 = OpVariable  %113  Function %14
+%112 = OpVariable  %113  Function %15
+%120 = OpVariable  %113  Function %14
+%117 = OpVariable  %113  Function %15
+%114 = OpVariable  %113  Function %14
+%118 = OpVariable  %113  Function %14
+%115 = OpVariable  %113  Function %15
+OpBranch %121
+%121 = OpLabel
+OpReturn
+OpFunctionEnd
+%123 = OpFunction  %2  None %32
+%122 = OpLabel
+OpBranch %124
+%124 = OpLabel
+%125 = OpFunctionCall  %2  %31
+%126 = OpFunctionCall  %2  %38
+%127 = OpFunctionCall  %2  %43
+%128 = OpFunctionCall  %2  %48
+%129 = OpFunctionCall  %2  %68
+%130 = OpFunctionCall  %2  %74
+%131 = OpFunctionCall  %2  %78
 OpReturn
 OpFunctionEnd

naga/tests/out/wgsl/const-exprs.wgsl

@@ -1,5 +1,7 @@
 const TWO: u32 = 2u;
 const THREE: i32 = 3i;
+const TRUE: bool = true;
+const FALSE: bool = false;
 const FOUR: i32 = 4i;
 const FOUR_ALIAS: i32 = 4i;
 const TEST_CONSTANT_ADDITION: i32 = 8i;
@@ -93,6 +95,19 @@ fn compose_vector_zero_val_binop() {
     return;
 }
 
+fn relational() {
+    var scalar_any_false: bool = false;
+    var scalar_any_true: bool = true;
+    var scalar_all_false: bool = false;
+    var scalar_all_true: bool = true;
+    var vec_any_false: bool = false;
+    var vec_any_true: bool = true;
+    var vec_all_false: bool = false;
+    var vec_all_true: bool = true;
+
+    return;
+}
+
 @compute @workgroup_size(2, 3, 1) 
 fn main() {
     swizzle_of_compose();