From 84dd1679e3c0ec6eeb7e8077d22ecaf57607be28 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Thu, 17 Nov 2022 22:47:02 +0900
Subject: [PATCH] examples/shader: remove the CRT example for license
 incompatibility

---
 examples/shader/crt.go      | 59 -------------------------------------
 examples/shader/crt_go.go   |  8 -----
 examples/shader/generate.go |  1 -
 examples/shader/main.go     |  1 -
 4 files changed, 69 deletions(-)
 delete mode 100644 examples/shader/crt.go
 delete mode 100644 examples/shader/crt_go.go

diff --git a/examples/shader/crt.go b/examples/shader/crt.go
deleted file mode 100644
index 72ce64fce..000000000
--- a/examples/shader/crt.go
+++ /dev/null
@@ -1,59 +0,0 @@
-// 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.
-
-//go:build ignore
-// +build ignore
-
-package main
-
-var Time float
-var Cursor vec2
-var ScreenSize vec2
-
-func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
-	const (
-		BLURSCALEX  = 0.45
-		LOWLUMSCAN  = 5.0
-		HILUMSCAN   = 10.0
-		BRIGHTBOOST = 1.25
-		MASK_DARK   = 0.25
-		MASK_FADE   = 0.8
-	)
-
-	pos := texCoord
-	origin, size := imageDstRegionOnTexture()
-	pos -= origin
-	pos /= size
-
-	maskFade := 0.3333 * MASK_FADE
-	invDims := 1.0 / imageDstTextureSize().xy
-	p := pos * imageDstTextureSize()
-	i := floor(p) + 0.50
-	f := p - i
-	p = (i + 4.0*f*f*f) * invDims
-	p.x = mix(p.x, pos.x, BLURSCALEX)
-	Y := f.y * f.y
-	YY := Y * Y
-	whichmask := fract(pos.x * -0.4999)
-	mask := 1.0
-	if whichmask < 0.5 {
-		mask -= MASK_DARK
-	}
-
-	clr := imageSrc2At(p*size + origin).rgb
-	scanLineWeight := (BRIGHTBOOST - LOWLUMSCAN*(Y-2.05*YY))
-	scanLineWeightB := 1.0 - HILUMSCAN*(YY-2.8*YY*Y)
-
-	return vec4(clr.rgb*mix(scanLineWeight*mask, scanLineWeightB, dot(clr.rgb, vec3(maskFade))), 1.0)
-}
diff --git a/examples/shader/crt_go.go b/examples/shader/crt_go.go
deleted file mode 100644
index 6c37a603c..000000000
--- a/examples/shader/crt_go.go
+++ /dev/null
@@ -1,8 +0,0 @@
-// Code generated by file2byteslice. DO NOT EDIT.
-
-//go:build example
-// +build example
-
-package main
-
-var crt_go = []byte("// Copyright 2022 The Ebiten Authors\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n//     http://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n\n//go:build ignore\n// +build ignore\n\npackage main\n\nvar Time float\nvar Cursor vec2\nvar ScreenSize vec2\n\nfunc Fragment(position vec4, texCoord vec2, color vec4) vec4 {\n\tconst (\n\t\tBLURSCALEX  = 0.45\n\t\tLOWLUMSCAN  = 5.0\n\t\tHILUMSCAN   = 10.0\n\t\tBRIGHTBOOST = 1.25\n\t\tMASK_DARK   = 0.25\n\t\tMASK_FADE   = 0.8\n\t)\n\n\tpos := texCoord\n\torigin, size := imageDstRegionOnTexture()\n\tpos -= origin\n\tpos /= size\n\n\tmaskFade := 0.3333 * MASK_FADE\n\tinvDims := 1.0 / imageDstTextureSize().xy\n\tp := pos * imageDstTextureSize()\n\ti := floor(p) + 0.50\n\tf := p - i\n\tp = (i + 4.0*f*f*f) * invDims\n\tp.x = mix(p.x, pos.x, BLURSCALEX)\n\tY := f.y * f.y\n\tYY := Y * Y\n\twhichmask := fract(pos.x * -0.4999)\n\tmask := 1.0\n\tif whichmask < 0.5 {\n\t\tmask -= MASK_DARK\n\t}\n\n\tclr := imageSrc2At(p*size + origin).rgb\n\tscanLineWeight := (BRIGHTBOOST - LOWLUMSCAN*(Y-2.05*YY))\n\tscanLineWeightB := 1.0 - HILUMSCAN*(YY-2.8*YY*Y)\n\n\treturn vec4(clr.rgb*mix(scanLineWeight*mask, scanLineWeightB, dot(clr.rgb, vec3(maskFade))), 1.0)\n}\n")
diff --git a/examples/shader/generate.go b/examples/shader/generate.go
index 527b03fda..fd0ef4c41 100644
--- a/examples/shader/generate.go
+++ b/examples/shader/generate.go
@@ -24,4 +24,3 @@ package main
 //go:generate go run github.com/hajimehoshi/file2byteslice/cmd/file2byteslice -package=main -input=chromaticaberration.go -output=chromaticaberration_go.go -var=chromaticaberration_go -buildtags=example
 //go:generate go run github.com/hajimehoshi/file2byteslice/cmd/file2byteslice -package=main -input=dissolve.go -output=dissolve_go.go -var=dissolve_go -buildtags=example
 //go:generate go run github.com/hajimehoshi/file2byteslice/cmd/file2byteslice -package=main -input=water.go -output=water_go.go -var=water_go -buildtags=example
-//go:generate go run github.com/hajimehoshi/file2byteslice/cmd/file2byteslice -package=main -input=crt.go -output=crt_go.go -var=crt_go -buildtags=example
diff --git a/examples/shader/main.go b/examples/shader/main.go
index 8ef28aa19..c170b261f 100644
--- a/examples/shader/main.go
+++ b/examples/shader/main.go
@@ -85,7 +85,6 @@ var shaderSrcs = [][]byte{
 	chromaticaberration_go,
 	dissolve_go,
 	water_go,
-	crt_go,
 }
 
 type Game struct {