mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 04:57:26 +01:00
114 lines
3.2 KiB
Go
114 lines
3.2 KiB
Go
// Copyright 2022 The Ebiten Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package ui
|
|
|
|
import (
|
|
"fmt"
|
|
"math"
|
|
"reflect"
|
|
"strings"
|
|
|
|
"github.com/hajimehoshi/ebiten/v2/internal/mipmap"
|
|
"github.com/hajimehoshi/ebiten/v2/internal/shaderir"
|
|
)
|
|
|
|
type Shader struct {
|
|
shader *mipmap.Shader
|
|
|
|
uniformNames []string
|
|
uniformTypes []shaderir.Type
|
|
uniformNameToIndex map[string]int
|
|
uniformNameToType map[string]shaderir.Type
|
|
}
|
|
|
|
func NewShader(ir *shaderir.Program) *Shader {
|
|
return &Shader{
|
|
shader: mipmap.NewShader(ir),
|
|
uniformNames: ir.UniformNames,
|
|
uniformTypes: ir.Uniforms,
|
|
}
|
|
}
|
|
|
|
func (s *Shader) MarkDisposed() {
|
|
s.shader.MarkDisposed()
|
|
s.shader = nil
|
|
}
|
|
|
|
func (s *Shader) ConvertUniforms(uniforms map[string]any) [][]uint32 {
|
|
nameToU32s := map[string][]uint32{}
|
|
for name, v := range uniforms {
|
|
v := reflect.ValueOf(v)
|
|
t := v.Type()
|
|
switch t.Kind() {
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
nameToU32s[name] = []uint32{uint32(v.Int())}
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
nameToU32s[name] = []uint32{uint32(v.Uint())}
|
|
case reflect.Float32, reflect.Float64:
|
|
nameToU32s[name] = []uint32{math.Float32bits(float32(v.Float()))}
|
|
case reflect.Slice, reflect.Array:
|
|
u32s := make([]uint32, v.Len())
|
|
switch t.Elem().Kind() {
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
for i := range u32s {
|
|
u32s[i] = uint32(v.Index(i).Int())
|
|
}
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
for i := range u32s {
|
|
u32s[i] = uint32(v.Index(i).Uint())
|
|
}
|
|
case reflect.Float32, reflect.Float64:
|
|
for i := range u32s {
|
|
u32s[i] = math.Float32bits(float32(v.Index(i).Float()))
|
|
}
|
|
default:
|
|
panic(fmt.Sprintf("ebiten: unexpected uniform value type: %s (%s)", name, v.Kind().String()))
|
|
}
|
|
nameToU32s[name] = u32s
|
|
default:
|
|
panic(fmt.Sprintf("ebiten: unexpected uniform value type: %s (%s)", name, v.Kind().String()))
|
|
}
|
|
}
|
|
|
|
if s.uniformNameToIndex == nil {
|
|
s.uniformNameToIndex = map[string]int{}
|
|
s.uniformNameToType = map[string]shaderir.Type{}
|
|
|
|
var idx int
|
|
for i, n := range s.uniformNames {
|
|
if strings.HasPrefix(n, "__") {
|
|
continue
|
|
}
|
|
s.uniformNameToIndex[n] = idx
|
|
s.uniformNameToType[n] = s.uniformTypes[i]
|
|
idx++
|
|
}
|
|
}
|
|
|
|
us := make([][]uint32, len(s.uniformNameToIndex))
|
|
for name, idx := range s.uniformNameToIndex {
|
|
if v, ok := nameToU32s[name]; ok {
|
|
us[idx] = v
|
|
continue
|
|
}
|
|
t := s.uniformNameToType[name]
|
|
us[idx] = make([]uint32, t.Uint32Count())
|
|
}
|
|
|
|
// TODO: Panic if uniforms include an invalid name
|
|
|
|
return us
|
|
}
|