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Diffstat (limited to 'src/org/cyanogenmod/wallpapers/photophase/effects/PopArtEffect.java')
-rw-r--r-- | src/org/cyanogenmod/wallpapers/photophase/effects/PopArtEffect.java | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/effects/PopArtEffect.java b/src/org/cyanogenmod/wallpapers/photophase/effects/PopArtEffect.java new file mode 100644 index 0000000..df2b18c --- /dev/null +++ b/src/org/cyanogenmod/wallpapers/photophase/effects/PopArtEffect.java @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2013 The CyanogenMod Project + * + * + * 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. + */ +// +// Based on the shaders of kodemongki: +// http://kodemongki.blogspot.com.es/2011/06/kameraku-custom-shader-effects-example.html +// + +package org.cyanogenmod.wallpapers.photophase.effects; + +import android.media.effect.EffectContext; + +/** + * A pop art (Warhol) effect<br/> + * <table> + * <tr><td>Parameter name</td><td>Meaning</td><td>Valid values</td></tr> + * </table> + */ +public class PopArtEffect extends PhotoPhaseEffect { + + private static final String FRAGMENT_SHADER = + "precision mediump float;\n" + + "uniform sampler2D tex_sampler;\n" + + "varying vec2 v_texcoord;\n" + + "void main(void)\n" + + "{\n" + + " vec3 col = texture2D(tex_sampler, v_texcoord).bgr;\n" + + " float y = 0.3 *col.r + 0.59 * col.g + 0.11 * col.b;\n" + + " y = y < 0.3 ? 0.0 : (y < 0.6 ? 0.5 : 1.0);\n" + + " if (y == 0.5)\n" + + " col = vec3(0.8, 0.0, 0.0);\n" + + " else if (y == 1.0)\n" + + " col = vec3(0.9, 0.9, 0.0);\n" + + " else\n" + + " col = vec3(0.0, 0.0, 0.0);\n" + + " gl_FragColor.a = 1.0;\n" + + " gl_FragColor.rgb = col;\n" + + "}"; + + /** + * Constructor of <code>PopArtEffect</code>. + * + * @param ctx The effect context + * @param name The effect name + */ + public PopArtEffect(EffectContext ctx, String name) { + super(ctx, PopArtEffect.class.getName()); + init(VERTEX_SHADER, FRAGMENT_SHADER); + } + +} |