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https://github.com/hajimehoshi/ebiten.git
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70acb9c1f6
Renamed image0TextureSize to imageSrcTextureSize, and removed the other texture-size functions. As texture-coordinates are always in image0's texture texels, calculations with texels are always done with image0's texture texels. Then, other texture-size functions are useless. To avoid confusion, let's remove the functions and leave the necessary funciton.
32 lines
1007 B
Go
32 lines
1007 B
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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// +build ignore
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package main
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var Time float
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var Cursor vec2
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var ScreenSize vec2
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func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
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center := ScreenSize / 2
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amount := (center - Cursor) / 10 / imageSrcTextureSize()
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var clr vec3
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clr.r = image2TextureBoundsAt(texCoord + amount).r
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clr.g = image2TextureAt(texCoord).g
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clr.b = image2TextureBoundsAt(texCoord - amount).b
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return vec4(clr, 1.0)
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}
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