mirror of
https://github.com/hajimehoshi/ebiten.git
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57 lines
1.8 KiB
Go
57 lines
1.8 KiB
Go
// Copyright 2014 Hajime Hoshi
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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 opengl
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// Since js.Object (Program) can't be keys of a map, use integers (ProgramID) instead.
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var uniformLocationCache = map[ProgramID]map[string]UniformLocation{}
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var attribLocationCache = map[ProgramID]map[string]AttribLocation{}
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type UniformLocationGetter interface {
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getUniformLocation(p Program, location string) UniformLocation
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}
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// TODO: Rename these functions not to be confusing
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func GetUniformLocation(g UniformLocationGetter, p Program, location string) UniformLocation {
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id := GetProgramID(p)
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if _, ok := uniformLocationCache[id]; !ok {
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uniformLocationCache[id] = map[string]UniformLocation{}
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}
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l, ok := uniformLocationCache[id][location]
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if !ok {
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l = g.getUniformLocation(p, location)
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uniformLocationCache[id][location] = l
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}
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return l
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}
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type AttribLocationGetter interface {
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getAttribLocation(p Program, location string) AttribLocation
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}
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func GetAttribLocation(g AttribLocationGetter, p Program, location string) AttribLocation {
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id := GetProgramID(p)
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if _, ok := attribLocationCache[id]; !ok {
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attribLocationCache[id] = map[string]AttribLocation{}
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}
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l, ok := attribLocationCache[id][location]
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if !ok {
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l = g.getAttribLocation(p, location)
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attribLocationCache[id][location] = l
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}
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return l
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}
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