Method init

src/main/java/net/optifine/shaders/Shaders.java:2140–2367

()

    }

    public static void init()
    {
        boolean flag;

        if (!isInitializedOnce)
        {
            isInitializedOnce = true;
            flag = true;
        }
        else
        {
            flag = false;
        }

        if (!isShaderPackInitialized)
        {
            checkGLError("Shaders.init pre");

            if (getShaderPackName() != null)
            {
                ;
            }

            if (!capabilities.OpenGL20)
            {
                printChatAndLogError("No OpenGL 2.0");
            }

            if (!capabilities.GL_EXT_framebuffer_object)
            {
                printChatAndLogError("No EXT_framebuffer_object");
            }

            dfbDrawBuffers.position(0).limit(8);
            dfbColorTextures.position(0).limit(16);
            dfbDepthTextures.position(0).limit(3);
            sfbDrawBuffers.position(0).limit(8);
            sfbDepthTextures.position(0).limit(2);
            sfbColorTextures.position(0).limit(8);
            usedColorBuffers = 4;
            usedDepthBuffers = 1;
            usedShadowColorBuffers = 0;
            usedShadowDepthBuffers = 0;
            usedColorAttachs = 1;
            usedDrawBuffers = 1;
            Arrays.fill((int[])gbuffersFormat, (int)6408);
            Arrays.fill(gbuffersClear, true);
            Arrays.fill(gbuffersClearColor, (Object)null);
            Arrays.fill(shadowHardwareFilteringEnabled, false);
            Arrays.fill(shadowMipmapEnabled, false);
            Arrays.fill(shadowFilterNearest, false);
            Arrays.fill(shadowColorMipmapEnabled, false);
            Arrays.fill(shadowColorFilterNearest, false);
            centerDepthSmoothEnabled = false;
            noiseTextureEnabled = false;
            sunPathRotation = 0.0F;
            shadowIntervalSize = 2.0F;
            shadowMapWidth = 1024;