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internal/shader: add type checks for the builtin function smoothstep

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Updates #2184
This commit is contained in:
Hajime Hoshi 2022-08-19 01:26:57 +09:00
parent f3ea274d20
commit 73f12fa704
2 changed files with 65 additions and 5 deletions
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17
internal/shader/expr.go
View File

@ -430,9 +430,6 @@ func (cs *compileState) parseExpr(block *block, fname string, expr ast.Expr, mar
return nil, nil, nil, false
}
t = shaderir.Type{Main: shaderir.Mat4}
case shaderir.Smoothstep:
// TODO: Check arg types.
t = argts[2]
case shaderir.Texture2DF:
// TODO: Check arg types.
t = shaderir.Type{Main: shaderir.Vec4}
@ -450,7 +447,7 @@ func (cs *compileState) parseExpr(block *block, fname string, expr ast.Expr, mar
})
return nil, nil, stmts, true
case shaderir.Clamp, shaderir.Mix:
case shaderir.Clamp, shaderir.Mix, shaderir.Smoothstep:
// 3 arguments
if len(args) != 3 {
cs.addError(e.Pos(), fmt.Sprintf("number of %s's arguments must be 3 but %d", callee.BuiltinFunc, len(args)))
@ -483,9 +480,19 @@ func (cs *compileState) parseExpr(block *block, fname string, expr ast.Expr, mar
cs.addError(e.Pos(), fmt.Sprintf("the third arguments for %s must equal to the first/second argument %s or float but %s", callee.BuiltinFunc, argts[0].String(), argts[2].String()))
return nil, nil, nil, false
}
case shaderir.Smoothstep:
if (!argts[0].Equal(&argts[1]) || !argts[0].Equal(&argts[2])) && (argts[0].Main != shaderir.Float || argts[1].Main != shaderir.Float) {
cs.addError(e.Pos(), fmt.Sprintf("the first and the second arguments for %s must equal to the third argument %s or float but %s and %s", callee.BuiltinFunc, argts[2].String(), argts[0].String(), argts[1].String()))
return nil, nil, nil, false
}
}
t = argts[0]
switch callee.BuiltinFunc {
case shaderir.Smoothstep:
t = argts[2]
default:
t = argts[0]
}
case shaderir.Atan2, shaderir.Mod, shaderir.Min, shaderir.Max, shaderir.Step, shaderir.Distance, shaderir.Dot, shaderir.Cross, shaderir.Reflect:
// 2 arguments

53
internal/shader/syntax_test.go
View File

@ -1944,6 +1944,59 @@ func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
}
}
// Issue #2184
func TestSyntaxBuiltinFuncSmoothstepType(t *testing.T) {
cases := []struct {
stmt string
err bool
}{
{stmt: "a := smoothstep(); _ = a", err: true},
{stmt: "a := smoothstep(1); _ = a", err: true},
{stmt: "a := smoothstep(false, false); _ = a", err: true},
{stmt: "a := smoothstep(1, 1); _ = a", err: true},
{stmt: "a := smoothstep(false, false, false); _ = a", err: true},
{stmt: "a := smoothstep(1, 1, 1); _ = a", err: false},
{stmt: "a := smoothstep(1.0, 1, 1); _ = a", err: false},
{stmt: "a := smoothstep(1, 1.0, 1); _ = a", err: false},
{stmt: "a := smoothstep(1, 1, 1.0); _ = a", err: false},
{stmt: "a := smoothstep(1, vec2(1), 1); _ = a", err: true},
{stmt: "a := smoothstep(1, 1, vec2(1)); _ = a", err: false},
{stmt: "a := smoothstep(1, 1, vec3(1)); _ = a", err: false},
{stmt: "a := smoothstep(1, 1, vec4(1)); _ = a", err: false},
{stmt: "a := smoothstep(1, vec2(1), vec2(1)); _ = a", err: true},
{stmt: "a := smoothstep(vec2(1), 1, 1); _ = a", err: true},
{stmt: "a := smoothstep(vec2(1), 1, vec2(1)); _ = a", err: true},
{stmt: "a := smoothstep(vec2(1), vec2(1), 1); _ = a", err: true},
{stmt: "a := smoothstep(vec2(1), vec2(1), vec2(1)); _ = a", err: false},
{stmt: "a := smoothstep(vec2(1), vec2(1), vec3(1)); _ = a", err: true},
{stmt: "a := smoothstep(vec3(1), 1, 1); _ = a", err: true},
{stmt: "a := smoothstep(vec3(1), 1, vec3(1)); _ = a", err: true},
{stmt: "a := smoothstep(vec3(1), vec3(1), 1); _ = a", err: true},
{stmt: "a := smoothstep(vec3(1), vec3(1), vec3(1)); _ = a", err: false},
{stmt: "a := smoothstep(vec4(1), 1, 1); _ = a", err: true},
{stmt: "a := smoothstep(vec4(1), 1, vec4(1)); _ = a", err: true},
{stmt: "a := smoothstep(vec4(1), vec4(1), 1); _ = a", err: true},
{stmt: "a := smoothstep(vec4(1), vec4(1), vec4(1)); _ = a", err: false},
{stmt: "a := smoothstep(1, 1, 1, 1); _ = a", err: true},
}
for _, c := range cases {
stmt := c.stmt
src := fmt.Sprintf(`package main
func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
%s
return position
}`, stmt)
_, err := compileToIR([]byte(src))
if err == nil && c.err {
t.Errorf("%s must return an error but does not", stmt)
} else if err != nil && !c.err {
t.Errorf("%s must not return nil but returned %v", stmt, err)
}
}
}
// Issue #2184
func TestSyntaxBuiltinFuncCrossType(t *testing.T) {
cases := []struct {