mirror of
https://github.com/hajimehoshi/ebiten.git
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113 lines
1.8 KiB
Go
113 lines
1.8 KiB
Go
// Copyright 2020 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package shaderir
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type Program struct {
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Uniforms []Variable
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Attributes []Variable
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Varyings []Variable
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Funcs []Func
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VertexEntry string
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FragmentEntry string
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structNames map[string]string
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structTypes []Type
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}
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type Variable struct {
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Name string
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Type Type
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}
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type Func struct {
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Name string
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InParams []Type
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InOutParams []Type
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OutParams []Type
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Block Block
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}
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type Block struct {
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LocalVars []Type
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Stmts []Stmt
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}
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type Stmt struct {
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Type StmtType
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Exprs []Expr
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Condition Expr
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ElseStmts []Expr
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ForInit Expr
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ForRest Expr
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}
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type StmtType int
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const (
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ExprStmt StmtType = iota
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Assign
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If
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For
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Continue
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Break
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Return
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Discard
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)
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type Expr struct {
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Type ExprType
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Exprs []Expr
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Value string
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Op Op
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}
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type ExprType int
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const (
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Literal ExprType = iota
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Ident
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LocalVarID
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Unary
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Binary
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Call
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Selector
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Index
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)
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type Op string
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const (
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Add Op = "+"
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Sub Op = "-"
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Neg Op = "!"
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Mul Op = "*"
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Div Op = "/"
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Mod Op = "%"
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LShift Op = "<<"
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RShift Op = ">>"
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LT Op = "<"
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LE Op = "<="
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GT Op = ">"
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GE Op = ">="
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Eq Op = "=="
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NE Op = "!="
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And Op = "&"
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Xor Op = "^"
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Or Op = "|"
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AndAnd Op = "&&"
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OrOr Op = "||"
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Cond Op = "?:"
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)
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