forward-compatibility

LWJGL 3.1.6 OpenGL 4.1 crash on macOS High Sierra

送分小仙女□ 提交于 2020-12-13 04:49:49
问题 I have a slightly modified version of the sample code found on the main LWJGL page. It works but it uses legacy OpenGL version 2.1 . If I attempt to use the forward-compatible context described in GLFW doc, the version used is 4.1 (no matter what major/minor I hint), the window is created, but it crashes on the first call to glPushMatrix() . Forward compatibility enabled like so: glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2); glfwWindowHint(GLFW

LWJGL 3.1.6 OpenGL 4.1 crash on macOS High Sierra

独自空忆成欢 提交于 2020-12-13 04:49:07
问题 I have a slightly modified version of the sample code found on the main LWJGL page. It works but it uses legacy OpenGL version 2.1 . If I attempt to use the forward-compatible context described in GLFW doc, the version used is 4.1 (no matter what major/minor I hint), the window is created, but it crashes on the first call to glPushMatrix() . Forward compatibility enabled like so: glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2); glfwWindowHint(GLFW

How can I safely compile a Perl 5.12 module for Perl 5.8.9?

坚强是说给别人听的谎言 提交于 2020-01-23 11:38:45
问题 I want to install File::Fetch, which is a core module in Perl 5.12, in my Perl 5.8.9. In general, I want to compile and install future-dated modules in my back-dated Perl because I cannot upgrade my Perl. So I downloaded the module and also its dependencies. It's quite painful following the dependency tree but I'm more concerned about the fact that some of them are core modules. If I install these, my Perl 5.8.9 core will have patches from 5.12. My question is how I can know whether I can

Do Java 8 default methods break source compatibility?

你离开我真会死。 提交于 2019-12-17 07:23:09
问题 It has generally been the case the Java source code has been forward compatible. Until Java 8, as far as I know, both compiled classes and source have been forward compatible with later JDK/JVM releases. [Update: this is not correct, see comments re 'enum', etc, below.] However, with the addition of default methods in Java 8 this appears to no longer be the case. For example, a library I have been using has an implementation of java.util.List which includes a List<V> sort() . This method

Is JDK “upward” or “backward” compatible?

烈酒焚心 提交于 2019-12-17 02:46:28
问题 Backward binary compatibility (or downward compatibility) - an ability of clients built with an old version of library API to run on a new one (wiki). Upward binary compatibility (or forward compatibility) - an ability of clients built with a new version of library API to run on old one (wiki). The general Sun's document about JDK Incompatibilities in J2SE 5.0 since 1.4.2 (and Java SE 6 compatibility with J2SE 5.0 too) describes the compatibility of JDK as following: JDK 5.0 is upwards binary

How to detect IE11?

只谈情不闲聊 提交于 2019-12-16 20:02:53
问题 When I want to detect IE I use this code: function getInternetExplorerVersion() { var rv = -1; if (navigator.appName == 'Microsoft Internet Explorer') { var ua = navigator.userAgent; var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})"); if (re.exec(ua) != null) rv = parseFloat( RegExp.$1 ); } return rv; } function checkVersion() { var msg = "You're not using Internet Explorer."; var ver = getInternetExplorerVersion(); if ( ver > -1 ) { msg = "You are using IE " + ver; } alert( msg ); } But IE11

iPhone Screen Resolution. 160 vs 163 vs. the future

天涯浪子 提交于 2019-12-14 04:02:26
问题 I'm trying to make an app that displays something in real-world units. It's not a ruler app, but it wants that kind of precision. It already looks like the iPhone and iPod touch have different screen resolutions (160 & 163 respectively) I've found this Calculating pixel size on an iPhone and this iPhone screen resolution changes in future hardware and this http://forums.macrumors.com/showthread.php?t=350612 From my reading it sounds like I can treat the 320 * 480 screen space as 2 * 3.5

Is this hack a defined behavior for T4

落花浮王杯 提交于 2019-12-12 17:16:31
问题 I recently set out on an expedition to unit-test a rather complex T4 class. I've arrived at a major breakthough, but I'm afraid the observed behavior may only be coincidental(ie, may break in future versions of Visual Studio) I basically have something like this: MainTemplate.tt: <#@ include file="generator.tt.cs" #> And then in generator.tt.cs I have //<#+ class code { .... } //#> The observed behavior of this is that I can both use the declared classes and such from the T4 template AND

How do I gracefully include Python 3.3 from None exception syntax in a Python 3.2 program?

半腔热情 提交于 2019-12-10 09:30:14
问题 I'm trying to re-raise an exception to give the user better information about the actual error. Python 3.3 includes PEP 409. It adds the raise NewException from None syntax to suppress the context of the original exception. However, I am targeting Python 3.2. The Python script will parse, but at runtime if it encounters the from None syntax it will produce TypeError: exception causes must derive from BaseException . For example: try: regex_c = re.compile('^{}$'.format(regex)) except re.error