From: David C. <dav...@ki...> - 2006-10-06 15:57:00
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Thanks for the replies. You've given me sufficient info to take the discussion to the next level with the VTK developers closer to the feature than I am... I'm just trying to get our tests to pass everywhere! Thanks again, David Cole Brian Paul wrote: > Michal Krol wrote: > >> On 06/10/06, David Cole <dav...@ki...> wrote: >> >>> First post to mesa lists... hopefully this is the right place for this >>> question: >>> >>> The ability to icorporate custom GLSL shaders was recently added to >>> VTK. >>> However, our tests of this fail when VTK is linked using mesa >>> apparently >>> because there is no glIsProgram symbol. We use an OpenGL extensions >>> manager object to query for it and it's not there. Are we doing >>> something wrong or is there something missing from mesa?? >>> >> >> >> GL_ARB_shader_objects extension does not define glIsProgram function. >> To check if a given program handle is valid, simply test it against 0. > > > David, are you clear on the difference between "programs" and > "shaders" and the various extensions for them? > > OpenGL 2.0 defines both glIsProgram() and glIsShader(). But neither > is in Mesa since Mesa isn't at the 2.0 level yet. > > -Brian > |