From 34279cbb4ea6506c3d64a62e20cd97643999ce61 Mon Sep 17 00:00:00 2001 From: Andrei Karas Date: Mon, 23 Jun 2014 23:18:36 +0300 Subject: Add manual OpenGL context creation. For SDL2 set attributes for context version. For SDL1.2 in X11 create own context. For SDL1.2 and other platforms not implimented for now. Also try fallback if need to older context versions. --- src/utils/sdl2helper.cpp | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'src/utils/sdl2helper.cpp') diff --git a/src/utils/sdl2helper.cpp b/src/utils/sdl2helper.cpp index 22c57116c..3b2b988a0 100644 --- a/src/utils/sdl2helper.cpp +++ b/src/utils/sdl2helper.cpp @@ -94,4 +94,36 @@ SDL_Thread *SDL::createThread(SDL_ThreadFunction fn, return SDL_CreateThread(fn, name, data); } +void *SDL::createGLContext(SDL_Window *const window, + const int major, + const int minor) +{ + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, major); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, minor); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, + SDL_GL_CONTEXT_PROFILE_CORE); +// SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG); + SDL_ClearError(); + void *context = SDL_GL_CreateContext(window); + if (SDL_GetError()) + { + if (!context && (major > 3 || (major == 3 && minor > 3))) + { + logger->log("Try fallback to OpenGL 3.3 context"); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3); + SDL_ClearError(); + context = SDL_GL_CreateContext(window); + if (SDL_GetError()) + { + logger->log("Try fallback to OpenGL 3.0 context"); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0); + context = SDL_GL_CreateContext(window); + } + } + } + return context; +} + #endif // USE_SDL2 -- cgit v1.2.3-70-g09d2