mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 05:12:18 +02:00
45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
// Copyright 2020 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.
|
|
|
|
//go:build ignore
|
|
|
|
package main
|
|
|
|
var Time float
|
|
var Cursor vec2
|
|
var ScreenSize vec2
|
|
|
|
func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
|
|
srcOrigin, srcSize := imageSrcRegionOnTexture()
|
|
pos := (texCoord - srcOrigin) / srcSize
|
|
pos *= ScreenSize
|
|
|
|
border := ScreenSize.y*0.6 + 4*cos(Time*3+pos.y/10)
|
|
if pos.y < border {
|
|
return imageSrc2UnsafeAt(texCoord)
|
|
}
|
|
|
|
srcTexSize := imageSrcTextureSize()
|
|
xoffset := (4 / srcTexSize.x) * cos(Time*3+pos.y/10)
|
|
yoffset := (20 / srcTexSize.y) * (1.0 + cos(Time*3+pos.y/40))
|
|
bordertex := border / srcTexSize.y
|
|
clr := imageSrc2At(vec2(
|
|
texCoord.x+xoffset,
|
|
-(texCoord.y+yoffset-srcOrigin.y)+bordertex*2+srcOrigin.y,
|
|
)).rgb
|
|
|
|
overlay := vec3(0.5, 1, 1)
|
|
return vec4(mix(clr, overlay, 0.25), 1)
|
|
}
|