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shaderir: Add builtin funcs dfdx, dfdy, fwidth

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Fixes #1242
This commit is contained in:
Hajime Hoshi 2020-07-11 21:50:07 +09:00
parent aecd29325e
commit 202bb34bac
1 changed files with 11 additions and 1 deletions
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12
internal/shaderir/program.go
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@ -248,6 +248,9 @@ const (
All BuiltinFunc = "all"
Not BuiltinFunc = "not"
Texture2DF BuiltinFunc = "texture2D"
Dfdx BuiltinFunc = "dfdx"
Dfdy BuiltinFunc = "dfdy"
Fwidth BuiltinFunc = "fwidth"
)
func ParseBuiltinFunc(str string) (BuiltinFunc, bool) {
@ -302,7 +305,10 @@ func ParseBuiltinFunc(str string) (BuiltinFunc, bool) {
Any,
All,
Not,
Texture2DF:
Texture2DF,
Dfdx,
Dfdy,
Fwidth:
return BuiltinFunc(str), true
}
return "", false
@ -320,6 +326,10 @@ func (f BuiltinFunc) Glsl() string {
return "greaterThanEqual"
case NotEqual:
return "notEqual"
case Dfdx:
return "dFdx"
case Dfdy:
return "dFdy"
default:
return string(f)
}