{"id":41,"date":"2014-10-16T01:32:39","date_gmt":"2014-10-15T17:32:39","guid":{"rendered":"http:\/\/www.zhuyanbin.com\/?p=41"},"modified":"2014-10-16T01:35:30","modified_gmt":"2014-10-15T17:35:30","slug":"%e5%85%b3%e4%ba%8ecocos2d-x%e5%af%b9etc1%e5%9b%be%e7%89%87%e6%94%af%e6%8c%81%e7%9a%84%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.yanbin888.com\/?p=41","title":{"rendered":"\u5173\u4e8ecocos2d-x\u5bf9etc1\u56fe\u7247\u652f\u6301\u7684\u5206\u6790"},"content":{"rendered":"<p>1\u3001ETC1\u56fe\u7247\u662fandroid\u4e0b\u901a\u7528\u7684\u538b\u7f29\u7eb9\u7406\uff0c\u51e0\u4e4e\u6240\u6709\u7684android\u673a\u5668\u90fd\u652f\u6301\uff0c\u662fopengles2.0\u7684\u6807\u51c6\u3002\u4e0d\u50cfpvrtc4\u53ea\u662f\u90e8\u5206powervr\u7684\u663e\u5361\u652f\u6301\u3002<\/p>\n<p>ETC1\u56fe\u7247\u4e0d\u652f\u6301\u534a\u900f\u660e\uff08\u6709\u66ff\u4ee3\u65b9\u6848\u53ef\u4ee5\u4f7fetc1\u56fe\u7247\u517c\u5bb9\u534a\u900f\u660e\u663e\u793a\uff09\uff0c\u5185\u5b58\u5360\u7528\u53ea\u6709\u6b63\u5e38RGBA8888\u7684\u516b\u5206\u4e4b\u4e00\uff08\u4e00\u4e2a\u50cf\u7d200.5\u4e2a\u5b57\u8282\uff09\uff0c\u5e76\u4e14\u5177\u5907\u6781\u9ad8\u7684\u52a0\u8f7d\u901f\u5ea6\u3002ETC1\u7684\u56fe\u7247\u5927\u5c0f\u53ea\u8ddf\u56fe\u7247\u5c3a\u5bf8\u76f8\u5173\uff0c\u5728\u5927\u5c0f\u4e0a\u65e0\u6cd5\u5ab2\u7f8ejpg\u6216\u8005png8\u7684\u56fe\u7247\u3002<\/p>\n<p>2\u3001cocos2d-x\u65e9\u671f\u4f7f\u7528android\u63d0\u4f9b\u7684ETC1Util\u6765\u52a0\u8f7d\u7eb9\u7406\uff0c\u540e\u9762\u7ecf\u8fc7\u4e00\u6b21\u4f18\u5316\uff0c\u6539\u53d8\u6210\u76f4\u63a5\u8bfb\u53d6\u6587\u4ef6\u7684\u52a0\u8f7d\u65b9\u5f0f\u3002 \u4e5f\u5c31\u662f\u8bf4ETC1\u6587\u4ef6\u524d\u976216\u4e2a\u5b57\u8282\u662f\u6587\u4ef6\u5934\uff0c\u5305\u542b\u6587\u4ef6\u5bbd\u9ad8\u7b49\u4fe1\u606f\u3002 \u9664\u5f00\u8fd916\u4e2a\u5b57\u8282\uff0c\u5269\u4e0b\u7684\u5c31\u662f\u56fe\u7247\u50cf\u7d20\u6570\u636e\uff0c\u8fd9\u4e9b\u6570\u636e\u53ef\u4ee5\u76f4\u63a5\u4f20\u9012\u7ed9\u663e\u5361\u4f7f\u7528glCompressedTexImage2D\u6765\u521b\u5efa\u7eb9\u7406\u3002<\/p>\n<p>3\u3001\u540c\u6837\u5728\u8fd9\u6b21\u4f18\u5316\u4e2d\uff0c\u52a0\u5165\u4e86\u8f6f\u4ef6\u89e3\u538bETC1\u7684\u529f\u80fd\uff0c\u8fd9\u6837windows\u7b49\u684c\u9762\u5e73\u53f0\u4e5f\u53ef\u4ee5\u4f7f\u7528ETC1\u7684\u56fe\u7247\u4e86\uff08\u867d\u7136\u6ca1\u6709\u4efb\u4f55\u4f18\u52bf\u53ef\u8a00\uff09\u3002\u4f46\u662f\u5b9e\u73b0\u6709\u4e00\u4e9bbug\uff0c\u5bfc\u81f4\u4e0d\u517c\u5bb9\u975e2\u7684\u6574\u6b21\u5e42\u7684\u56fe\u7247\u3002\u4fee\u6539\u5982\u4e0b<\/p>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_1\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_1\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"comment\">\/\/if\u00a0it\u00a0is\u00a0not\u00a0gles\u00a0or\u00a0device\u00a0do\u00a0not\u00a0support\u00a0ETC,\u00a0decode\u00a0texture\u00a0by\u00a0software<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"datatypes\">int<\/span>\u00a0bytePerPixel\u00a0=\u00a03;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0GLenum\u00a0fallBackType\u00a0=\u00a0GL_UNSIGNED_BYTE;<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/*bool\u00a0fallBackUseShort\u00a0=\u00a0false;<\/span><\/li>\n<li class=\"\"><span class=\"comment\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(fallBackUseShort)<\/span><\/li>\n<li class=\"alt\"><span class=\"comment\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/span><\/li>\n<li class=\"\"><span class=\"comment\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0bytePerPixel\u00a0=\u00a02;<\/span><\/li>\n<li class=\"alt\"><span class=\"comment\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fallBackType\u00a0=\u00a0GL_UNSIGNED_SHORT_5_6_5;<\/span><\/li>\n<li class=\"\"><span class=\"comment\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/span><\/li>\n<li class=\"alt\"><span class=\"comment\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0*\/<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0unsigned\u00a0<span class=\"datatypes\">int<\/span>\u00a0stride\u00a0=\u00a0_width\u00a0*\u00a0bytePerPixel;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::vector&lt;unsigned\u00a0<span class=\"datatypes\">char<\/span>&gt;\u00a0decodeImageData(((stride\u00a0+\u00a03)\u00a0&amp;~\u00a03)\u00a0*\u00a0((_height\u00a0+\u00a03)\u00a0&amp;~3));<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0etc1_decode_image(etcFileData\u00a0+\u00a0ETC_PKM_HEADER_SIZE,\u00a0&amp;decodeImageData[0],\u00a0_width,\u00a0_height,\u00a0bytePerPixel,\u00a0((stride\u00a0+\u00a03)\u00a0&amp;~\u00a03));<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/set\u00a0decoded\u00a0data\u00a0to\u00a0gl<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glGenTextures(1,\u00a0&amp;_name);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glBindTexture(GL_TEXTURE_2D,\u00a0_name);<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(GL_TEXTURE_2D,\u00a0GL_TEXTURE_MIN_FILTER,\u00a0GL_LINEAR);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(GL_TEXTURE_2D,\u00a0GL_TEXTURE_WRAP_S,\u00a0GL_CLAMP_TO_EDGE);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(GL_TEXTURE_2D,\u00a0GL_TEXTURE_WRAP_T,\u00a0GL_CLAMP_TO_EDGE);<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexImage2D(GL_TEXTURE_2D,\u00a00,\u00a0GL_RGB,\u00a0_width,\u00a0_height,\u00a00,\u00a0GL_RGB,\u00a0fallBackType,\u00a0&amp;decodeImageData[0]);<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glBindTexture(GL_TEXTURE_2D,\u00a00);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">delete<\/span>[]\u00a0etcFileData;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0etcFileData\u00a0=\u00a0NULL;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return<\/span>\u00a0<span class=\"keyword\">true<\/span>;<\/li>\n<\/ol>\n<\/div>\n<p>\u6ce8\u610f\u5176\u4e2d\u4e24\u53e5<\/p>\n<p>std::vector&lt;unsigned char&gt; decodeImageData(((stride + 3) &amp;~ 3) * ((_height + 3) &amp;~3));<\/p>\n<p>etc1_decode_image(etcFileData + ETC_PKM_HEADER_SIZE, &amp;decodeImageData[0], _width, _height, bytePerPixel, ((stride + 3) &amp;~ 3));<\/p>\n<p>\u5206\u914d\u5185\u5b58\u5fc5\u987b\u80fd\u591f\u5bb9\u7eb3\u4e0b\u56fe\u7247\u6570\u636e\uff0c\u800cETC1\u56fe\u7247\u4f1a\u8fdb\u884c4\u5b57\u8282\u5bf9\u9f50\uff08\u5706\u6574\uff09\uff0c\u6240\u4ee5\u5bbd\u9ad8\u4e0d\u80fd\u76f4\u63a5\u4f7f\u7528\u539f\u59cb\u56fe\u7247\u6570\u636e\u3002 \u00a0\u5f53\u7136\uff0c\u4e0d\u4fee\u6539\u7684\u8bdd\u5bf9\u4e8e2\u7684\u6574\u6b21\u5e42\u7684\u56fe\u7247\u4e5f\u662f\u6ca1\u6709\u95ee\u9898\u7684\uff0c\u56e0\u4e3a\u672c\u8eab\u5c31\u662f\u5bf9\u9f50\u7684\uff0c\u4e0d\u9700\u8981\u5706\u6574\u4e86\u3002<\/p>\n<p>4\u3001android\u4e0b\u90e8\u5206\u673a\u5668\u517c\u5bb9\u975e2\u7684\u6574\u6b21\u5e42\u7684etc1\u56fe\u7247\uff0c\u4f46\u662f\u540c\u6837\u4e5f\u6709\u90e8\u5206\u673a\u5668\u4e0d\u517c\u5bb9\u3002\u9047\u5230\u975e2\u7684\u6574\u6b21\u5e42\u7684\u56fe\u7247\u4f1a\u6e32\u67d3\u9519\u8bef\u751a\u81f3\u5d29\u6e83\u3002\u6240\u4ee5android\u4e0b\u4f7f\u7528etc1\u56fe\u7247\u9700\u8981\u8fdb\u884c2\u7684\u6574\u6b21\u5e42\u7684\u6269\u5c55\u3002\u5982\u679c\u5927\u91cf\u96f6\u788e\u6587\u4ef6\u7684\u8bdd\uff0c\u8003\u8651\u4f7f\u7528TexturePacker\u6253\u5305\u56fe\u7247<\/p>\n<p>5\u3001etc1\u5bf9\u900f\u660e\u56fe\u7247\u7684\u652f\u6301\u3002 \u00a0etc1\u4e0d\u652f\u6301\u900f\u660e\u56fe\u7247\uff0c\u540c\u6837cocos2d-x\u5bf9etc1\u4e5f\u4e0d\u652f\u6301\u900f\u660e\u56fe\u7247\u7684\u663e\u793a\u3002\u867d\u7136\u56fe\u7247\u683c\u5f0f\u4e0a\u9762\u4e0d\u652f\u6301\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6280\u672f\u624b\u6bb5\u95f4\u63a5\u8fbe\u5230\u900f\u660eetc1\u56fe\u7247\u6e32\u67d3\u7684\u76ee\u7684\u3002\u8be6\u7ec6\u5185\u5bb9\u53ef\u4ee5\u53c2\u8003<a href=\"http:\/\/malideveloper.arm.com\/develop-for-mali\/sample-code\/etcv1-texture-compression-and-alpha-channels\/\">\u8fd9\u91cc<\/a>\u00a0\u3002<\/p>\n<p>\u6709\u4e24\u79cd\u65b9\u6848\u53ef\u4ee5\u9009\u62e9\uff0c\u4e00\u79cd\u662f\u901a\u8fc7Mali\u5de5\u5177\u751f\u6210pkm\u6587\u4ef6\u65f6\u9009\u62e9Create atlas\uff0c\u8fd9\u6837\u5c31\u751f\u6210\u4e86\u4e00\u5f20\u62fc\u63a5\u5728\u4e00\u8d77\u7684\u7eb9\u7406\u3002\u8fd9\u5f20\u7eb9\u7406\u4e0a\u534a\u90e8\u5206\u662f\u539f\u59cb\u56fe\u7247\uff08\u65e0alpha\u4fe1\u606f\uff09\uff0c\u4e0b\u534a\u90e8\u5206\u662falpha\u4fe1\u606f\u56fe\u7247\u3002\u5728\u6e32\u67d3\u7684\u65f6\u5019\u4f7f\u7528\u7279\u6b8a\u7684shader\u8fdb\u884c\u6e32\u67d3\u3002\u8fd9\u4e2a\u6539\u52a8\u662f\u6bd4\u8f83\u5c0f\u7684\u3002<\/p>\n<p>\u53e6\u4e00\u79cd\u65b9\u6848\u662f\u521b\u5efa\u4e24\u5f20\u5206\u79bb\u7684\u56fe\u7247\uff0c\u5206\u522b\u662f\u539f\u59cb\u56fe\u7247\u548calpha\u56fe\u7247\u3002\u6e32\u67d3\u65f6\u52a0\u8f7d\u8fd9\u4e24\u5f20\u7eb9\u7406\uff0c\u7136\u540ealpha\u56fe\u7247\u5f53\u505a\u53c2\u6570\u4f20\u9012\u7ed9\u539f\u59cb\u56fe\u7247\u7684shader\u3002<\/p>\n<p>\u6211\u4f7f\u7528\u7684\u662f\u7b2c\u4e00\u79cd\u65b9\u6848\u3002\u4fee\u6539\u540e\u7684shader\u5982\u4e0b\uff08\u6ce8\u610f\uff0c\u8fd9\u4e2ashader\u662f\u65b0\u589e\u7684\uff0c\u5e76\u4e14\u662f\u53ea\u6709\u8fd9\u79cd\u6253\u5305\u7684etc1\u56fe\u7247\u624d\u4f7f\u7528\u8fd9\u4e2ashader\uff0c\u672a\u6253\u5305\u7684\u65e0\u900f\u660e\u8272\u7684etc1\u56fe\u7247\u548cpng\u56fe\u7247\u4f9d\u7136\u4f7f\u7528\u539f\u6765\u7684shader\uff09 \u00a0\u53ea\u9700\u8981\u4fee\u6539\u50cf\u7d20\u7740\u8272\u5668\u4ee3\u7801\uff0c\u9876\u70b9\u7740\u8272\u5668\u4ee3\u7801\u4e0d\u53d8\u3002 \u00a0\u7531\u4e8e\u73b0\u5728etc\u652f\u6301\u900f\u660e\u663e\u793a\u4e86\uff0c\u6240\u4ee5bool CCTexture2D::initWithETCFile(const char* file)\u4e2dm_bHasPremultipliedAlpha\u8981\u7f6e\u4e3afalse\uff0c\u5f00\u542falpha blend\u6765\u6e32\u67d3\u56fe\u7247<\/p>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_2\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_2\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><\/li>\n<li class=\"\"><span class=\"preprocessor\">#ifdef\u00a0GL_ES\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">precision\u00a0lowp\u00a0<span class=\"datatypes\">float<\/span>;<\/li>\n<li class=\"\"><span class=\"preprocessor\">#endif\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">varying\u00a0vec4\u00a0v_fragmentColor;<\/li>\n<li class=\"alt\">varying\u00a0vec2\u00a0v_texCoord;<\/li>\n<li class=\"\">uniform\u00a0sampler2D\u00a0CC_Texture0;<\/li>\n<li class=\"alt\"><span class=\"keyword\">void<\/span>\u00a0main()<\/li>\n<li class=\"\">{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0gl_FragColor\u00a0=\u00a0vec4(texture2D(CC_Texture0,\u00a0vec2(v_texCoord.x,\u00a0v_texCoord.y)).xyz,\u00a0texture2D(CC_Texture0,\u00a0vec2(v_texCoord.x,\u00a0v_texCoord.y\u00a0+\u00a00.5)).r);<\/li>\n<li class=\"\">}<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>\n<p>6\u3001\u4f7f\u7528etc1\u56fe\u7247\u53ef\u4ee5\u6781\u5927\u7684\u51cf\u5c11\u5185\u5b58\uff0c\u5e76\u4e14\u52a0\u5feb\u52a0\u8f7d\u901f\u5ea6\u3002 \u00a0\u6211\u505a\u8fc7\u4e00\u4e2a\u7b80\u5355\u7684\u6d4b\u8bd5\uff0c80k\u7684png8\u7684\u56fe\u7247\u52a0\u8f7d\u9700\u8981\u6d88\u8017117ms\uff0c\u540c\u6837\u7684etc1\u56fe\u7247\uff08\u7ecf\u8fc7\u6269\u5c55\u67091mb\u5927\u5c0f\uff09\u52a0\u8f7d\u6d88\u801740ms\u3002\u8fd9\u4e2a\u5df2\u7ecf\u662f\u6781\u9650\u60c5\u51b5\u3002 \u00a0\u4e00\u822c\u6765\u8bf4\u540c\u6837\u5927\u5c0f\u7684etc1\u56fe\u7247\u52a0\u8f7d\u901f\u5ea6\u8981\u5feb5~10\u500d\u3002<\/p>\n<p>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\u4e0b\u9762\u65b0\u7684\u7814\u7a76\u6210\u679c~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<\/p>\n<p>7\u3001\u5173\u4e8ePremultipliedAlpha\u7684\u7406\u89e3\u3002 \u00a0cocos2d-x\u7684CCTexture2D\u4e2d\u6709\u4e00\u4e2am_bHasPremultipliedAlpha\u7684\u5c5e\u6027\u3002\u6211\u4eec\u4f7f\u7528TexturePacker\u4e2d\u5bfc\u51fapvr\u56fe\u7247\u65f6\u4e5f\u6709\u63d0\u793a\u5f00\u542fPVRImagesHavePremultipliedAlpha\u8fd9\u4e2a\u9009\u9879\u3002 \u00a0\u867d\u7136PremultipliedAlpha\u5c31\u662f\u56fe\u7247\u7684\u989c\u8272\u5728\u8f93\u51fa\u7684\u65f6\u5019\u5df2\u7ecf\u9884\u5148\u4e58\u4ee5alpha\u8272\u4e86\uff0c\u6240\u4ee5\u6e32\u67d3\u7684\u65f6\u5019\u56fe\u7247\u7684RGB\u5c31\u9700\u8981\u518d\u6b21\u4e58\u4ee5alpha\u8272\u4e86\uff0c\u8fd9\u4e2a\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u53ef\u4ee5\u63d0\u9ad8\u8fd0\u884c\u6548\u7387\u3002\u6240\u4ee5TexturePacker\u63a8\u8350\u5f00\u542fPremultipliedAlpha\u9009\u9879\uff0cXCode\u5bfc\u51fapng\u56fe\u7247\u7684\u65f6\u5019\u4ee5\u53caUIImage\u52a0\u8f7d\u56fe\u7247\u7684\u65f6\u5019\u90fd\u4f1a\u4f7f\u7528PremultipliedAlpha\u3002 \u00a0 \u8fd9\u4e2a\u6709\u4e00\u70b9\u6076\u5fc3\u7684\u5730\u65b9\u5c31\u662f\uff0c\u6211\u4eec\u65e0\u6cd5\u901a\u8fc7\u4e00\u4e2a\u56fe\u7247\u5c5e\u6027\u5224\u65ad\u5b83\u662f\u5426\u662f\u662fPremultipliedAlpha\u7684\uff0c\u53ea\u80fd\u901a\u8fc7\u8089\u773c\u6216\u8005\u662f\u4e00\u4e2a\u5e76\u4e0d\u51c6\u786e\u7684\u516c\u5f0f\u6765\u5224\u65ad\u3002<\/p>\n<p>\u6211\u4eec\u8fd8\u53ef\u4ee5\u8fdb\u4e00\u6b65\u53bb\u7406\u89e3\u8fd9\u4e2a\u8bbe\u7f6e\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u534a\u900f\u660e\u56fe\u7247\u6e32\u67d3\u4f7f\u7528\u7684\u662falpha blend \u53c2\u89c1CCSprite::updateBlendFunc()\u8fd9\u4e2a\u51fd\u6570\u3002<\/p>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_3\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_3\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">void<\/span>\u00a0CCSprite::updateBlendFunc(<span class=\"keyword\">void<\/span>)<\/li>\n<li class=\"\">{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0CCAssert\u00a0(!\u00a0m_pobBatchNode,\u00a0<span class=\"string\">&#8220;CCSprite:\u00a0updateBlendFunc\u00a0doesn&#8217;t\u00a0work\u00a0when\u00a0the\u00a0sprite\u00a0is\u00a0rendered\u00a0using\u00a0a\u00a0CCSpriteBatchNode&#8221;<\/span>);<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/\u00a0it\u00a0is\u00a0possible\u00a0to\u00a0have\u00a0an\u00a0untextured\u00a0sprite<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>\u00a0(!\u00a0m_pobTexture\u00a0||\u00a0!\u00a0m_pobTexture-&gt;hasPremultipliedAlpha())<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0m_sBlendFunc.src\u00a0=\u00a0GL_SRC_ALPHA;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0m_sBlendFunc.dst\u00a0=\u00a0GL_ONE_MINUS_SRC_ALPHA;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0setOpacityModifyRGB(<span class=\"keyword\">false<\/span>);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">else<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0m_sBlendFunc.src\u00a0=\u00a0CC_BLEND_SRC;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0m_sBlendFunc.dst\u00a0=\u00a0CC_BLEND_DST;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0setOpacityModifyRGB(<span class=\"keyword\">true<\/span>);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"\">}<\/li>\n<\/ol>\n<\/div>\n<p>\u6b63\u5e38\u6765\u8bf4\uff0c\u534a\u900f\u660e\u56fe\u7247\u6e32\u67d3\u4f7f\u7528\u7684\u662f GL_SRC_ALPHA \u00a0GL_ON_MINUS_SRC_ALPHA\u8fd9\u4e2a\u9009\u9879 \u4ee3\u8868\u7684\u610f\u601d\u5c31\u662f\uff1a \u6e90\uff08\u56fe\u7247\uff09\u50cf\u7d20*\u6e90\u56e0\u5b50(\u6e90alpha) + \u76ee\u6807\uff08\u5c4f\u5e55\uff09\u50cf\u7d20*\u76ee\u6807\u56e0\u5b50\uff081-\u6e90alpha\uff09\u3002 \u00a0\u901a\u8fc7\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u8fbe\u5230\u6e32\u67d3\u534a\u900f\u660e\u56fe\u7247\u7684\u76ee\u7684\u3002<\/p>\n<p>\u5982\u679c\u56fe\u7247\u6709PremultipliedAlpha\uff0c\u518d\u4f7f\u7528\u8fd9\u4e2a\u516c\u5f0f\u5c31\u4e0d\u5bf9\u4e86\uff0c\u56fe\u7247\u660e\u663e\u53d8\u6697\uff0c\u56e0\u4e3a\u56fe\u7247\u7684rgb\u5df2\u7ecf\u4e58\u4ee5alpha\u4e86\uff0c\u518d\u4e58\u4e00\u6b21\u56fe\u7247\u81ea\u7136\u5c31\u53d8\u9ed1\u4e00\u70b9\u3002 \u00a0\u8fd9\u4e2a\u65f6\u5019\u6e32\u67d3\u7684\u516c\u5f0f\u5c31\u53d8\u4e3a\uff1a<\/p>\n<p>\u6e90\u50cf\u7d20 + \u76ee\u6807\u50cf\u7d20*(1-\u6e90alpha)\u3002 \u00a0\u867d\u7136\u56fe\u7247\u4f9d\u7136\u662f\u534a\u900f\u660e\u7684\uff0c\u4f46\u662f\u5904\u7406\u6e90\u50cf\u7d20\u65f6\u4e0d\u518d\u5206\u522b\u4e58alpha\u4e86\u3002<\/p>\n<p>8\u3001\u4e3a\u4ec0\u4e48\u8981\u7279\u610f\u63d0\u8fd9\u4e2a\u5c5e\u6027\u5462\uff1f \u00a0\u56e0\u4e3aETC1\u56fe\u7247\u5728\u52a0\u8f7d\u7684\u65f6\u5019\u9ed8\u8ba4\u5f00\u542f\u4e86PremultipliedAlpha\uff0c\u4e00\u822c\u4e0d\u900f\u660e\u7684\u56fe\u7247\u5904\u7406\u8d77\u6765\u6ca1\u6709\u95ee\u9898\uff08\u6b63\u5e38\u7684etc1\u56fe\u7247\u5c31\u662f\u4e0d\u900f\u660e\u7684\uff09\uff0c\u4f46\u662f\u53c2\u89c1\u4e0a\u9762\u6211\u4eec\u7684\u900f\u660eetc1\u56fe\u7247\u6e32\u67d3\u89e3\u51b3\u65b9\u6848\uff0c\u5b9e\u9645\u56fe\u7247\u5728\u6e32\u67d3\u7684\u65f6\u5019\u662f\u53ef\u4ee5\u8fbe\u5230\u534a\u900f\u660e\u7684\u6548\u679c\u7684\u3002\u6240\u4ee5\u6211\u4eec\u6709\u4e24\u4e2a\u9009\u62e9\uff0c\u4e00\u4e2a\u662f\u9ed8\u8ba4\u5173\u95edPremultipliedAlpha\uff0c\u53e6\u4e00\u4e2a\u662f\u9ed8\u8ba4\u5f00\u542fPremultipliedAlpha\u7136\u540eshader\u4e2d\u5206\u522b\u628argb\u4e58\u4ee5alpha\u3002 \u00a0\u5177\u4f53\u662falpha blend\u6548\u7387\u9ad8\u8fd8\u662fshader\u4e2d\u6548\u7387\u9ad8\u6211\u8fd8\u6ca1\u6709\u6d4b\u8bd5\u3002<\/p>\n<p>9\u3001\u4f7f\u7528\u4e0a\u9762\u7684shader\u5728\u6e32\u67d3\u7684\u65f6\u5019windows\u4e0b\u6b63\u5e38\uff0c\u4f46\u662fandroid\u4e0b\u4f1a\u51fa\u73b0\u5927\u91cf\u7684\u952f\u9f7f\u3002\u4e00\u5f00\u59cb\u4ee5\u4e3a\u662fmipmap\u6ca1\u6709\u5f00\u542f\u7684\u7f18\u6545\uff0c\u4f46\u662f\u4f7f\u7528mipmap\uff08\u540e\u9762\u4f1a\u4ecb\u7ecd\uff09\u540e\uff0c\u4f9d\u7136\u65e0\u6cd5\u89e3\u51b3\u95ee\u9898\u3002\u540e\u9762\u53d1\u73b0cocos2d-x\u4e2dshader\u9ed8\u8ba4\u4f7f\u7528\u7684\u4f4e\u7cbe\u5ea6\u6d6e\u70b9\u6570<\/p>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_4\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_4\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"preprocessor\">#ifdef\u00a0GL_ES\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\\n\\<\/span><\/li>\n<li class=\"\">precision\u00a0lowp\u00a0<span class=\"datatypes\">float<\/span>;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\\n\\<\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#endif\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\\n\\<\/span><\/li>\n<\/ol>\n<\/div>\n<p>\u4f4e\u7cbe\u5ea6\u6d6e\u70b9\u6570\u6709\u6548\u4f4d\u6570\u56e0\u663e\u5361\u800c\u5f02\uff0c\u4f46\u662f\u4e0d\u9ad8\u662f\u80af\u5b9a\u7684\u3002\u5982\u679c\u6211\u4eec\u6ca1\u6709\u7279\u6b8a\u7684\u8fd0\u7b97\uff0c\u4f4e\u7cbe\u5ea6\u8db3\u591f\u4f7f\u7528\u3002\u4f46\u662f\u4e00\u65e6\u6211\u4eec\u6709*0.5\u4e4b\u7c7b\u7684\u8fd0\u7b97\uff0c\u90a3\u4e48\u4f4e\u7cbe\u5ea6\u6d6e\u70b9\u6570\u5f88\u5bb9\u6613\u4e22\u5931\u6570\u636e\uff0c\u90a3\u8868\u73b0\u51fa\u6765\u5c31\u662f\u5404\u79cd\u952f\u9f7f\u3002 \u00a0\u6240\u4ee5\u5728\u65b0\u7684shader\u4ee3\u7801\u4e2d\u5220\u9664\u4e86\u8fd9\u4e2a\u6307\u4ee4\u3002 \u00a0 \u53e6\u5916\u67d0\u4e9b\u6587\u6863\u8bf4\uff0c\u4f7f\u7528\u4f4e\u7cbe\u5ea6\u65e0\u52a9\u4e8e\u6548\u7387\u63d0\u5347\uff0c\u56e0\u4e3a\u6700\u7ec8\u6e32\u67d3\u7684\u65f6\u5019\u8fd8\u662f\u8981\u8f6c\u56de\u4e2d\u7cbe\u5ea6\uff08\u4e2d\u7cbe\u5ea6\u662f\u9ed8\u8ba4\u9009\u9879\uff0c\u90e8\u5206\u9ad8\u7ea7\u663e\u5361\u652f\u6301\u9ad8\u7cbe\u5ea6\uff09<\/p>\n<p>10\u3001\u6700\u7ec8\u4fee\u6539\u540e\u7684shader\u5982\u4e0b<\/p>\n<p>\u9876\u70b9shader \u00a0(\u6211\u4eec\u628a\u90e8\u5206\u8fd0\u7b97\u79fb\u52a8\u5230\u9876\u70b9shader\u4e2d\uff0c\u800c\u4e0d\u662f\u6bcf\u4e2a\u50cf\u7d20\u8fdb\u884c\u8ba1\u7b97\uff0c\u8fd9\u4e2a\u53ef\u4ee5\u63d0\u5347\u8fd0\u884c\u6548\u7387)<\/p>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_5\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_5\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><\/li>\n<li class=\"\">attribute\u00a0vec4\u00a0a_position;<\/li>\n<li class=\"alt\">attribute\u00a0vec2\u00a0a_texCoord;<\/li>\n<li class=\"\">attribute\u00a0vec4\u00a0a_color;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">varying\u00a0vec4\u00a0v_fragmentColor;<\/li>\n<li class=\"alt\">varying\u00a0vec2\u00a0v_texCoord;<\/li>\n<li class=\"\">varying\u00a0vec2\u00a0v_alphaCoord;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\"><span class=\"keyword\">void<\/span>\u00a0main()<\/li>\n<li class=\"alt\">{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0gl_Position\u00a0=\u00a0CC_MVPMatrix\u00a0*\u00a0a_position;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0v_fragmentColor\u00a0=\u00a0a_color;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0v_texCoord\u00a0=\u00a0a_texCoord\u00a0*\u00a0vec2(1.0,\u00a01.0);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0v_alphaCoord\u00a0=\u00a0v_texCoord\u00a0+\u00a0vec2(0.0,\u00a00.5);<\/li>\n<li class=\"\">}<\/li>\n<\/ol>\n<\/div>\n<p>\u50cf\u7d20shader<\/p>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_6\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_6\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\">varying\u00a0vec4\u00a0v_fragmentColor;<\/li>\n<li class=\"\">varying\u00a0vec2\u00a0v_texCoord;<\/li>\n<li class=\"alt\">varying\u00a0vec2\u00a0v_alphaCoord;<\/li>\n<li class=\"\">uniform\u00a0sampler2D\u00a0CC_Texture0;<\/li>\n<li class=\"alt\"><span class=\"keyword\">void<\/span>\u00a0main()<\/li>\n<li class=\"\">{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0vec4\u00a0v4Colour\u00a0=\u00a0texture2D(CC_Texture0,\u00a0v_texCoord);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0v4Colour.a\u00a0=\u00a0texture2D(CC_Texture0,\u00a0v_alphaCoord).r;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0v4Colour.xyz\u00a0=\u00a0v4Colour.xyz\u00a0*\u00a0v4Colour.a;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0gl_FragColor\u00a0=\u00a0v4Colour\u00a0*\u00a0v_fragmentColor;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/gl_FragColor\u00a0=\u00a0vec4(texture2D(CC_Texture0,\u00a0vec2(v_texCoord.x,\u00a0v_texCoord.y)).xyz,\u00a0texture2D(CC_Texture0,\u00a0vec2(v_texCoord.x,\u00a0v_texCoord.y\u00a0+\u00a00.5)).r);<\/span><\/li>\n<li class=\"alt\">}<\/li>\n<\/ol>\n<\/div>\n<p>\u5173\u4e8eshader\u9700\u8981\u8bf4\u660e\u4e09\u70b9\uff0c\u5728\u9876\u70b9shader\u4e2d\u6709\u8fd9\u4e48\u4e00\u6761\u6307\u4ee4 \u00a0v_texCoord = a_texCoord * vec2(1.0, 1.0); \u00a0 \u56e0\u4e3aETC1\u9700\u89812\u7684\u6574\u6b21\u5e42\uff0c\u6240\u4ee5\u6211\u4eec\u7684\u56fe\u7247\u57fa\u672c\u4e0a\u90fd\u6709\u6269\u5c55\uff0c\u90a3\u4e5f\u5c31\u610f\u5473\u7740\u4f1a\u8bbe\u7f6esetTextureRect\uff0c\u5982\u679c\u8bbe\u7f6e\u4e86\u8fd9\u4e2a\uff0c\u90a3\u4e48a_texCoord\u5c31\u662f\u6211\u4eec\u6307\u5b9a\u7684\u5927\u5c0f\uff0c\u6240\u4ee5\u8fd9\u91cc\u53bb\u7684\u662f(1.0, 1.0)\uff0c\u5982\u679c\u6ca1\u6709setTextureRect\uff0c\u90a3\u4e48a_texCoord\u5c31\u662f\u5168\u90e8\u7684\u8d34\u56fe\u5927\u5c0f\uff0c\u4e5f\u5c31\u662f\u4e24\u500d\u7684\u6b63\u5e38\u5927\u5c0f\uff0c\u90a3\u4e48\u8fd9\u4e2a\u65f6\u5019\u53d6\u7684\u5c31\u5e94\u8be5\u662f(1.0, \u00a00.5)\u3002 \u00a0\u6700\u7ec8\u6211\u7684\u89e3\u51b3\u65b9\u6cd5\u662f\u6240\u6709\u7684\u4f7f\u7528\u8fd9\u4e2ashader\u7684\u56fe\u7247\u90fd\u8bbe\u7f6e\u4e00\u4e0b\u5927\u5c0f\u3002\u8fd9\u6837shader\u5c31\u7edf\u4e00\u4e86\u3002<\/p>\n<p>\u5728\u50cf\u7d20\u7740\u8272\u5668\u4ee3\u7801\u4e2d\u6709v4Colour.xyz = v4Colour.xyz * v4Colour.a; \u00a0\u8fd9\u4e2a\u5c31\u8ddf\u4e0a\u9762\u8bf4\u7684PremultipliedAlpha\u6709\u5173\u7cfb\u3002\u6211\u4eec\u5728shader\u4e2d\u9884\u5148\u4e58\u4ee5alpha\u3002<\/p>\n<p>\u8fd9\u4e2ashader\u7684\u4f7f\u7528\u6761\u4ef6\uff0c\u53ea\u6709\u5e26\u900f\u660e\u7684etc1\u56fe\u7247\uff08\u901a\u8fc7\u5de5\u5177\u5bfc\u51fa\u65f6\u8fdb\u884c\u4e86\u81ea\u52a8\u62fc\u63a5\uff09\u624d\u80fd\u4f7f\u7528\u8fd9\u4e2ashader\u8fdb\u884c\u6e32\u67d3\uff0c\u5426\u5219\u90fd\u4f1a\u51fa\u9519\u3002\u8fd9\u4e2a\u6211\u4eec\u8981\u5728\u4ee3\u7801\u4e2d\u8fdb\u884c\u5224\u65ad\u3002<\/p>\n<p>&nbsp;<\/p>\n<div>11\u3001\u5173\u4e8e\u56fe\u7247\u62fc\u63a5\u65f6\u7684\u9ed1\u8fb9\u95ee\u9898\u3002<\/div>\n<div>\u8fd9\u4e2a\u53ef\u4ee5\u5355\u72ec\u5f00\u4e00\u4e2a\u8bdd\u9898\uff0c\u4f46\u662f\u7531\u4e8e\u662f\u6211\u5904\u7406ETC1\u56fe\u7247\u65f6\u9047\u5230\u7684\uff0c\u6240\u4ee5\u7edf\u4e00\u90fd\u5728\u8fd9\u91cc\u89e3\u6790\u4e86\u3002 \u7f51\u4e0a\u7ecf\u5e38\u770b\u5230\u6709\u4eba\u8bf4\u56fe\u7247\u62fc\u63a5\u7684\u65f6\u5019\u6709\u9ed1\u8fb9\uff0c\u6bd4\u5982tilemap\u5730\u56fe\u62fc\u63a5\u7684\u65f6\u5019\u3002\u8fd9\u4e2a\u5206\u4e09\u79cd\u60c5\u51b5\uff0c\u4e00\u79cd\u662f\u6700\u7b80\u5355\u7684\u56fe\u7247\u5bf9\u9f50\u8ba1\u7b97\u6709\u95ee\u9898\uff0c\u62fc\u63a5\u7684\u65f6\u5019\u7531\u4e8e\u6d6e\u70b9\u6570\u8ba1\u7b97\u591a\u4e86\u4e00\u4e2a\u50cf\u7d20\u6216\u8005\u662f\u5c11\u4e86\u4e00\u4e2a\u50cf\u7d20\uff0c\u8fd9\u4e2a\u8ba1\u7b97\u7684\u65f6\u5019\u6709\u610f\u5411\u505a\u79fb\u52a8\u4e00\u4e2a\u50cf\u7d20\u5c31\u53ef\u4ee5\u89e3\u51b3\u3002<\/div>\n<div>\u7b2c\u4e8c\u79cd\u662f\u56fe\u7247\u5bfc\u51fa\u7684\u95ee\u9898\uff08\u4f7f\u7528TexturePacker\uff09\uff0c\u4e0d\u4ec5\u4ec5\u662f\u5730\u56fe\u62fc\u63a5\u9ed1\u8fb9\uff0c\u53ef\u80fd\u5176\u4ed6\u8d44\u6e90\u4e5f\u4f1a\u6709\u9ed1\u7684\u865a\u7ebf\uff0c\u8fd9\u4e2a\u5728\u5bfc\u51fa\u7684\u65f6\u5019\u9009\u62e9&#8211;border 2 &#8211;shape 2 \uff08TexturePacker\u4e2d\u6709\u5bf9\u5e94\u7684\u8bbe\u7f6e\uff0c\u9ed8\u8ba4\u4e3a0\uff0c\u4f46\u662f\u6211\u4e4b\u524d\u624b\u6b20\u7ed9\u4fee\u6539\u6210\u4e860\uff09\u3002 \u53e6\u5916\u8fd8\u6709\u4e00\u4e2aExclude\u9009\u9879\u4e5f\u662f\u7528\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u3002<\/div>\n<div>\u7b2c\u4e09\u79cd\u662f\u6700\u672c\u8d28\u7684\u95ee\u9898\uff0c\u6bd4\u5982\u6211\u78b0\u5230\u7684\u4f7f\u7528png\u56fe\u7247\u6e32\u67d3\u6b63\u5e38\uff0c\u4f46\u662f\u4f7f\u7528etc1\u56fe\u7247\u6e32\u67d3\u5c31\u51fa\u73b0\u9ed1\u8fb9\uff0c\u82e5\u9690\u82e5\u73b0\uff0c\u4e00\u62d6\u52a8\u754c\u9762\u5c31\u51fa\u73b0\u3002 \u8fd9\u4e2a\u53ef\u4ee5\u5728\u7eb9\u7406\u521b\u5efa\u7684\u65f6\u5019\u8bbe\u7f6e\u8fd9\u4e2a\u6765\u89e3\u51b3\uff08png\u7b49\u56fe\u7247\u521b\u5efa\u7684\u65f6\u5019\u6709\u8bbe\u7f6e\uff0c\u4f46\u662fetc1\u6ca1\u6709\uff09<\/div>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_7\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_7\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\">glTexParameteri(target,\u00a0GL_TEXTURE_WRAP_S,\u00a0GL_CLAMP_TO_EDGE);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(target,\u00a0GL_TEXTURE_WRAP_T,\u00a0GL_CLAMP_TO_EDGE);<\/li>\n<\/ol>\n<\/div>\n<p>\u4e00\u822c\u6765\u8bf4\uff0c\u7eb9\u7406\u901a\u8fc7<\/p>\n<\/div>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_8\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_8\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">if<\/span>\u00a0(isMipmapped)\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/*\u00a0Enable\u00a0bilinear\u00a0mipmapping\u00a0*\/<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(target,\u00a0GL_TEXTURE_MIN_FILTER,\u00a0GL_LINEAR_MIPMAP_NEAREST);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0<span class=\"keyword\">else<\/span>\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(target,\u00a0GL_TEXTURE_MIN_FILTER,\u00a0GL_LINEAR);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<\/ol>\n<\/div>\n<p>\u8fd9\u4e2a\u6765\u8fdb\u884c\u6297\u952f\u9f7f\u7b49\u64cd\u4f5c\uff0c\u4f46\u662f\u5982\u679c\u5728\u56fe\u7247\u8fb9\u7f18\u7684\u65f6\u5019\u8ba1\u7b97\u5c31\u4f1a\u6709\u95ee\u9898\uff0c\u56e0\u4e3a\u5916\u90e8\u6ca1\u6709\u50cf\u7d20\u4e86\uff0c\u800c\u56fe\u7247\u672c\u8eab\u50cf\u7d20\u4e3a\u534a\u900f\u660e\uff0c\u90a3\u4e48\u8ba1\u7b97\u7684\u65f6\u5019\u5f88\u6709\u53ef\u80fd\u8ba1\u7b97\u51fa\u9ed1\u8272\uff0c\u90a3\u4e48\u5c31\u663e\u793a\u51fa\u9ed1\u8fb9\u4e86\u3002<\/p>\n<\/div>\n<div><\/div>\n<div>12\u3001\u6700\u540e\u8981\u8bf4\u4e0bmipmap\uff0cmipmap\u5c31\u662f\u56fe\u7247\u5982\u679c\u6709\u7f29\u5c0f\uff0c\u90a3\u4e48\u6e32\u67d3\u7684\u65f6\u5019\u4f7f\u7528\u5c0f\u7684\u56fe\u7247\uff08\u6bd4\u5982256*256\u7684\u56fe\u7247\u5982\u679c\u7f29\u5c0f\u4e00\u534a\u6765\u6e32\u67d3\uff0c\u5c31\u53d6128*128\u7684\u56fe\u7247\uff09\uff0c\u8fd9\u4e2a\u5c0f\u7684\u56fe\u7247\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u51fd\u6570\u751f\u6210<\/div>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_9\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_9\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">void<\/span>\u00a0CCTexture2D::generateMipmap()<\/li>\n<li class=\"\">{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0CCAssert(\u00a0m_uPixelsWide\u00a0==\u00a0ccNextPOT(m_uPixelsWide)\u00a0&amp;&amp;\u00a0m_uPixelsHigh\u00a0==\u00a0ccNextPOT(m_uPixelsHigh),\u00a0<span class=\"string\">&#8220;Mipmap\u00a0texture\u00a0only\u00a0works\u00a0in\u00a0POT\u00a0textures&#8221;<\/span>);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0ccGLBindTexture2D(\u00a0m_uName\u00a0);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0glGenerateMipmap(GL_TEXTURE_2D);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0m_bHasMipmaps\u00a0=\u00a0<span class=\"keyword\">true<\/span>;<\/li>\n<li class=\"alt\">}<\/li>\n<\/ol>\n<\/div>\n<p>\u4e5f\u53ef\u4ee5\u5728\u751f\u6210\u56fe\u7247\u7684\u65f6\u5019\u76f4\u63a5\u521b\u5efamipmap\u7684\u56fe\u7247\u3002 etc1\u8c8c\u4f3c\u4e0d\u652f\u6301\u5185\u5b58\u4e2d\u76f4\u63a5\u751f\u6210\u3002 \u5f00\u542fmipmap\u8fdb\u884c\u6e32\u67d3\u4f1a\u591a30%\u5de6\u53f3\u7684\u5185\u5b58\u5f00\u9500\uff0c\u4f46\u662f\u5982\u679c\u56fe\u7247\u7f29\u5c0f\u6e32\u67d3\u7684\u8bdd\uff0c\u4f1a\u63d0\u9ad8\u8fd0\u884c\u6548\u7387\uff0c\u5e76\u4e14\u4f1a\u63d0\u9ad8\u753b\u8d28\uff08\u76f4\u63a5\u7f29\u5c0f\u53ef\u80fd\u67d0\u4e9b\u50cf\u7d20\u901a\u8fc711\u4e2d\u63d0\u5230\u7684\u7eb9\u7406\u8fc7\u6ee4\u8ba1\u7b97\u8d77\u6765\u4f1a\u6709\u504f\u5dee\uff0c\u4f46\u662f\u4f7f\u7528\u9884\u5148\u7f29\u5c0f\u7684\u56fe\u7247\u5c31\u53ef\u4ee5\u8fbe\u5230\u81ea\u5df1\u6ee1\u610f\u7684\u6548\u679c\uff09\u3002 \u800cetc1\u7684\u8bdd\u5728\u521b\u5efa\u56fe\u7247\u7684\u65f6\u5019\u5f00\u542fmipmap\u4f1a\u591a\u521b\u5efan\u5f20\u7f29\u5c0f\u7eb9\u7406\uff0c\u5bf9\u5e94\u6587\u4ef6\u4f53\u79ef\u5c31\u589e\u5927\u4e86\uff0c\u6700\u5927\u4f1a\u589e\u52a030%~50%\u3002 \u8fd9\u4e2a\u6211\u4eec\u770b\u60c5\u51b5\u4f7f\u7528\uff0c\u90e8\u5206\u6838\u5fc3\u7684\u91cd\u8981\u7684\u56fe\u7247\u5f00\u542fmipmap\u3002 \u52a0\u8f7d\u56fe\u7247\u6210\u4e3amipmap\u6bd4\u8f83\u7b80\u5355 glTexImage2D(GL_TEXTURE_2D, 0, s_compressFormat_RGBA, (GLsizei)pixelsWide, (GLsizei)pixelsHigh, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); \u8fd9\u4e2a\u662f\u63d0\u4ea4\u7eb9\u7406\u6570\u636e\u7684\u51fd\u6570\uff0c\u5176\u4e2d\u7b2c\u4e8c\u662fmipmap\u7b49\u7ea7\uff0c\u7a7fn\u5c31\u5bf9\u5e94n\u7ea7\u7684mipmap\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679cpkm\u7684etc1\u56fe\u7247\u8981\u652f\u6301mipmap\uff0c\u5c31\u9700\u8981\u81ea\u5df1\u5199\u4ee3\u7801\uff0c\u53e6\u52a0\u8f7d1~n\u5f20\u7eb9\u7406\uff0c\u7136\u540e\u4f7f\u7528glTexImage2D\u8fd9\u4e2a\u51fd\u6570\u628a\u8fd9n\u5f20\u7eb9\u7406\u63d0\u4ea4\u7ed9\u663e\u5361\u3002<\/p>\n<\/div>\n<div><\/div>\n<div><\/div>\n<div>13\u3001cocos2d-x\u4e2d\u5bf9etc1\u7684\u652f\u6301\u6bd4\u8f83\u521d\u7ea7\u3002 \u65e2\u6ca1\u6709\u900f\u660e\u8272\u7684\u652f\u6301\uff0c\u4e5f\u4e0d\u652f\u6301mipmap\u3002<\/div>\n<div>etc1\u56fe\u7247\u683c\u5f0f\u6709\u4e24\u79cd\uff0c\u4e00\u79cd\u662fpkm\uff0c\u8fd9\u79cd\u662f\u7b80\u5355\u7684etc1\u683c\u5f0f\uff0c\u73b0\u5728cocos2d-x\u652f\u6301\u7684\u5c31\u662f\u8fd9\u79cd\u683c\u5f0f\u3002\u53e6\u5916\u4e00\u79cd\u662fktx\u683c\u5f0f\uff0c\u8fd9\u4e2a\u662fopengles\u7ec4\u7ec7\u63d0\u4f9b\u7684\u5b98\u65b9\u683c\u5f0f\u3002\u53ef\u4ee5\u628a\u591a\u4e2amipmap\u6253\u5305\u5230\u4e00\u4e2aktx\u6587\u4ef6\u91cc\u9762\u3002 \u73b0\u5728\u6211\u7684\u4ee3\u7801\u91cc\u9762\u4f7f\u7528\u7684\u5c31\u662fktx\u683c\u5f0f\u3002\u4f7f\u7528ktx\u56fe\u7247\u9700\u8981\u5230<a href=\"http:\/\/www.khronos.org\/opengles\/sdk\/tools\/KTX\/downloads\/ktx20.zip\">\u8fd9\u91cc<\/a>\u4e0b\u8f7dktx\u7684loader\u5e93\uff0c\u628a\u8fd9\u4e2a\u5e93\u52a0\u5165\u5230cocos2d-x\u4e2d\uff0c\u6838\u5fc3\u52a0\u8f7d\u4ee3\u7801\u5982\u4e0b<\/div>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\">\n<p><b>[cpp]<\/b><\/p>\n<div><embed id=\"ZeroClipboardMovie_10\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_10\"><\/embed><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"datatypes\">bool<\/span>\u00a0CCTextureETC::initWithKtxData(etc1_byte*\u00a0pData,\u00a0<span class=\"datatypes\">int<\/span>\u00a0len)<\/li>\n<li class=\"\">{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0GLuint\u00a0texture\u00a0=\u00a00;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0GLenum\u00a0target;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0GLboolean\u00a0isMipmapped;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0GLenum\u00a0glerror;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0GLubyte*\u00a0pKvData;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0unsigned\u00a0<span class=\"datatypes\">int<\/span>\u00a0\u00a0kvDataLen;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0KTX_dimensions\u00a0dimensions;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0KTX_error_code\u00a0ktxerror;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0KTX_hash_table\u00a0kvtable;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0GLint\u00a0sign_s\u00a0=\u00a01,\u00a0sign_t\u00a0=\u00a01;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0ktxerror\u00a0=\u00a0ktxLoadTextureM(pData,\u00a0len,\u00a0&amp;_name,\u00a0&amp;target,\u00a0&amp;dimensions,\u00a0&amp;isMipmapped,\u00a0&amp;glerror,\u00a0&amp;kvDataLen,\u00a0&amp;pKvData);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>\u00a0(KTX_SUCCESS\u00a0==\u00a0ktxerror)\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0_width\u00a0=\u00a0dimensions.width;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0_height\u00a0=\u00a0dimensions.height;<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ktxerror\u00a0=\u00a0ktxHashTable_Deserialize(kvDataLen,\u00a0pKvData,\u00a0&amp;kvtable);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>\u00a0(KTX_SUCCESS\u00a0==\u00a0ktxerror)\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0GLubyte*\u00a0pValue;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0unsigned\u00a0<span class=\"datatypes\">int<\/span>\u00a0valueLen;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>\u00a0(KTX_SUCCESS\u00a0==\u00a0ktxHashTable_FindValue(kvtable,\u00a0KTX_ORIENTATION_KEY,<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&amp;valueLen,\u00a0(<span class=\"keyword\">void<\/span>**)&amp;pValue))<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"datatypes\">char<\/span>\u00a0s,\u00a0t;<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>\u00a0(_snscanf((<span class=\"keyword\">const<\/span>\u00a0<span class=\"datatypes\">char<\/span>*)pValue,\u00a0valueLen,\u00a0KTX_ORIENTATION2_FMT,\u00a0&amp;s,\u00a0&amp;t)\u00a0==\u00a02)\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>\u00a0(s\u00a0==\u00a0<span class=\"string\">&#8216;l&#8217;<\/span>)\u00a0sign_s\u00a0=\u00a0-1;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>\u00a0(t\u00a0==\u00a0<span class=\"string\">&#8216;d&#8217;<\/span>)\u00a0sign_t\u00a0=\u00a0-1;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ktxHashTable_Destroy(kvtable);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0free(pKvData);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/\u00a0\u52a0\u8f7d\u6210\u529f<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>\u00a0(isMipmapped)\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/*\u00a0Enable\u00a0bilinear\u00a0mipmapping\u00a0*\/<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(target,\u00a0GL_TEXTURE_MIN_FILTER,\u00a0GL_LINEAR_MIPMAP_NEAREST);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0<span class=\"keyword\">else<\/span>\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(target,\u00a0GL_TEXTURE_MIN_FILTER,\u00a0GL_LINEAR);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(target,\u00a0GL_TEXTURE_WRAP_S,\u00a0GL_CLAMP_TO_EDGE);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(target,\u00a0GL_TEXTURE_WRAP_T,\u00a0GL_CLAMP_TO_EDGE);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glTexParameteri(target,\u00a0GL_TEXTURE_MAG_FILTER,\u00a0GL_LINEAR);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0glBindTexture(target,\u00a00);<span class=\"comment\">\/\/\u00a0\u8fd9\u53e5\u5f88\u91cd\u8981\uff0c\u5426\u5219\u4f1a\u6709\u4e00\u4e9b\u8be1\u5f02\u7684\u6e32\u67d3\u95ee\u9898<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return<\/span>\u00a0<span class=\"keyword\">true<\/span>;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return<\/span>\u00a0<span class=\"keyword\">false<\/span>;<\/li>\n<li class=\"alt\">}<\/li>\n<\/ol>\n<p>\u8f6c\u8f7d\u81ea:\u00a0http:\/\/blog.csdn.net\/langresser_king\/article\/details\/9339313<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001ETC1\u56fe\u7247\u662fandroid\u4e0b\u901a\u7528\u7684\u538b\u7f29\u7eb9\u7406\uff0c\u51e0\u4e4e\u6240\u6709\u7684android\u673a\u5668\u90fd\u652f\u6301\uff0c\u662fopengles2.0 <span class=\"ellipsis\">&hellip;<\/span> <span class=\"more-link-wrap\"><a href=\"https:\/\/www.yanbin888.com\/?p=41\" class=\"more-link\"><span>Read More &rarr;<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[26,14],"class_list":["post-41","post","type-post","status-publish","format-standard","hentry","category-cocos2d-x","tag-android","tag-etc"],"_links":{"self":[{"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/posts\/41","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=41"}],"version-history":[{"count":3,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/posts\/41\/revisions"}],"predecessor-version":[{"id":44,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=\/wp\/v2\/posts\/41\/revisions\/44"}],"wp:attachment":[{"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yanbin888.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}