Cocos2d-x lua shader使用

前端之家收集整理的这篇文章主要介绍了Cocos2d-x lua shader使用前端之家小编觉得挺不错的,现在分享给大家,也给大家做个参考。
function darkNode(node)

 local vertDefaultSource = "\n"..
                           "attribute vec4 a_position; \n" ..
                           "attribute vec2 a_texCoord; \n" ..
                           "attribute vec4 a_color; \n"..                                                    
                           "#ifdef GL_ES  \n"..
                           "varying lowp vec4 v_fragmentColor;\n"..
                           "varying mediump vec2 v_texCoord;\n"..
                           "#else                      \n" ..
                           "varying vec4 v_fragmentColor; \n" ..
                           "varying vec2 v_texCoord;  \n"..
                           "#endif    \n"..
                           "void main() \n"..
                           "{\n" ..
                            "gl_Position = CC_PMatrix * a_position; \n"..
                           "v_fragmentColor = a_color;\n"..
                           "v_texCoord = a_texCoord;\n"..
                           "}"
        
    local pszFragSource = "#ifdef GL_ES \n" ..
                          "precision mediump float; \n" ..
                            "#endif \n" ..
                            "varying vec4 v_fragmentColor; \n" ..
                            "varying vec2 v_texCoord; \n" ..
                            "void main(void) \n" ..
                            "{ \n" ..
                             "vec4 c = texture2D(CC_Texture0,v_texCoord); \n" ..
                            "gl_FragColor.xyz = vec3(0.4*c.r + 0.4*c.g +0.4*c.b); \n"..
                            "gl_FragColor.w = c.w; \n"..
                            "}"

    local pProgram = cc.GLProgram:createWithByteArrays(vertDefaultSource,pszFragSource)
    
    pProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_POSITION,cc.VERTEX_ATTRIB_POSITION)
    pProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_COLOR,cc.VERTEX_ATTRIB_COLOR)
    pProgram:bindAttribLocation(cc.ATTRIBUTE_NAME_TEX_COORD,cc.VERTEX_ATTRIB_FLAG_TEX_COORDS)
    pProgram:link()
    pProgram:updateUniforms()
    node:setGLProgram(pProgram)
    
end

猜你在找的Cocos2d-x相关文章