Cocos openGL编写自己的Shaders

概述cocos2d-x 3.5，lua环境下实现按钮变灰； 代码调用： local program = cc.GLProgram:create("Shaders/Gray.vsh", "Shaders/Gray.fsh") program:bindAttribLocation(cc.ATTRIBUTE_NAME_POSITION, cc.VERTEX_ATTRIB_POSITION)

cocos2d-x 3.5，lua环境下实现按钮变灰；

代码调用：

    local program = cc.GLProgram:create("Shaders/Gray.vsh","Shaders/Gray.fsh")    program:bindAttribLocation(cc.ATTRIBUTE_name_position,cc.VERTEX_ATTRIB_position)     program:bindAttribLocation(cc.ATTRIBUTE_name_TEX_COORD,cc.VERTEX_ATTRIB_TEX_COORD)    program:link()    program:updateUniforms()label:setGLProgram( program )

自己的vsh和fsh

attribute vec4 a_position;attribute vec2 a_texCoord;attribute vec4 a_color;                    varying vec4 v_fragmentcolor;varying vec2 v_texCoord;                                voID main()    {                                gl_position = CC_PMatrix * a_position;    v_fragmentcolor = a_color;    v_texCoord = a_texCoord;}gray.vsh

varying vec4 v_fragmentcolor;    varying vec2 v_texCoord;    uniform sampler2D CC_Texture0;            voID main()            {    vec4 v_orcolor = v_fragmentcolor * texture2D(CC_Texture0,v_texCoord);    float gray = dot(v_orcolor.rgb,vec3(0.299,0.587,0.114));    gl_Fragcolor = vec4(gray,gray,v_orcolor.a);}                gray.fsh

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