On 14 May 2013 00:45, Igor Stasenko <siguc...@gmail.com> wrote: > On 9 May 2013 00:04, kilon <theki...@yahoo.co.uk> wrote: >> Ok so I tried to learn Opengl ES 2 (and opengl 4) during my eastern vacations >> because I realised >> >> that I dont really need Athens or vector graphics for my GUI , since I will >> be dealing mostly with 3d >> graphics anyway. (My project "ephestos" will be an effort of creating a 3d >> app for pharo, see also "blender") >> > well, Athens provides convenient API for 2d vector graphics, which not > exists in opengl .. > One day i want to begin implementing opengl backend for Athens. > >> So when I tried to run the demos i get an error with >> >> NBMacGLContextDriver>>supportsCurrentPlatform >> "obviously, for Mac intel-32 only :)" >> ^ NativeBoost platformId = NativeBoostConstants mac32PlaformId >> >> My mac is "obviously" not 32-bit but 64 bit, but I dont know if that matters >> since pharo is only 32 bit anyway. >> The bug is also obvious it should be mac32PlatformId and not mac32PlaformId. >> >> I correct and proceed and gives me a new error this time in >> >> NBMacGlApi>>glApiCall: fnSpec index: fnIndex attributes: attributes context: >> contextToRetry >> >> ^[ >> (NBCallFailureHandler for: contextToRetry) retryWith: [ :targetClass >> :targetMethod | >> (NBFFICallout >> targetClass: targetClass targetMethod: targetMethod fnSpec: >> fnSpec) >> stdcall; >> generate: [ :gen | self emitCall: fnIndex generator: gen ] >> ] >> ] on: NBNativeCodeError do: [:err :handler | >> err errorCode = ErrorFnNotAvailable ifTrue: [ >> "Native code is installed, but function pointer not loaded yet. >> Try to load function and retry the call" >> (self tryGetFunctionPointer: (self class glFunctions at: >> fnIndex)) ifFalse: [ ^ err pass ]. >> ^ handler retrySend >> ]. >> err pass >> ] >> >> The problem here that NBCallFailureHandler is nowhere to be found. At first >> I though my >> NB was lagging behind in version so I download from smalltalk Hub and did >> >> ConfigurationOfNativeboost loadStable. >> > > Neither my image has "NBCallFailureHandler". > Looks like you loaded wrong version of NBOpenGL. > How did you loaded NBOpenGL? > For 2.0/3.0 pharo image use > (ConfigurationOfNBOpenGL project version: '2.0') load > > it should work out of the box. > (and you don't need to load NativeBoost, because it is already in image). > >> it updated without errors but still that class is nowhere to be found. >> >> So my question is this, does it really worth it to struggle with NBOpengl or >> will it better to learn how Nativeboost works and use Opengl myself ? >> > > That what exactly NBOpenGL is. > Its contents is bindings to OpenGL library (over 3000 functions) > the rest is glue code , which mostly serves as an example how to > create and initialize > opengl context depending on platform you using. > > The subcategory "NBOpenGL-Display" contains root classes with that glue code. > While NBOpenGL-Core is 99% is just plain opengl api. > > If you don't like this glue, you can just avoid using it.. but throwing away > opengl core and making own.. makes little sense. > I actually encouraged people to write better glue code for > initializing context.. > The main problem is that its highly platform specific.. and my > knowledge doesn't covers > deeply all 3 platforms. > I did windows and mac parts.. and linux made by Javier. > Oh, and i should also mention, since depending on application you may want to initialize context differently (different pixel format , different number of buffers etc).. you will need to override/rewrite context initialization part by youself. So, the existing context initialization code is more for demo purposes but not for serious use. Another thing, that i don't see how i can provide sufficient "generic" context creation part, because there's a lot of flags and options which sometimes need fine tuning (like selecting most matching pixel format), which would make code too clever, and therefore rigid.. and i know by myself that it is best to be left for developer to decide what he wants and how.
>> >> >> -- >> View this message in context: >> http://forum.world.st/Understanding-NBOpenGL-tp4686514.html >> Sent from the Pharo Smalltalk mailing list archive at Nabble.com. >> > > > > -- > Best regards, > Igor Stasenko. -- Best regards, Igor Stasenko.
