mirror of https://github.com/axmolengine/axmol.git
49 lines
1.7 KiB
GLSL
49 lines
1.7 KiB
GLSL
/*
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* cocos2d for iPhone: http://www.cocos2d-iphone.org
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*
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* Copyright (c) 2011 Ricardo Quesada
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* Copyright (c) 2012 Zynga Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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const char* dualSampler_gray_frag = R"(
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#ifdef GL_ES
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precision mediump float;
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#endif
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varying vec4 v_fragmentColor;
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varying vec2 v_texCoord;
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uniform sampler2D u_tex0;
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uniform sampler2D u_tex1;
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void main()
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{
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vec4 texColor = texture2D(u_tex0, v_texCoord);
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texColor.a = texture2D(u_tex1, v_texCoord).r;
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texColor.rgb *= texColor.a; // premultiply alpha channel
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texColor = v_fragmentColor * texColor;
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gl_FragColor.rgb = vec3(0.2126*texColor.r + 0.7152*texColor.g + 0.0722*texColor.b);
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gl_FragColor.a = texColor.a;
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}
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)";
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