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SDL: really try lower GL profiles & add GLES context support

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* When compiled with USING_GLES2, attempt to use only valid ES context
  versions.
* Ensure that lower profiles are attempted correctly rather than
  prematurely returning from the function after the first failure.

Needed for Raspberry Pi to successfully launch.
This commit is contained in:
Conn O'Griofa 2017-12-20 07:13:18 +00:00
parent b0528f3794
commit d67d201681
1 changed files with 11 additions and 4 deletions
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15
SDL/SDLMain.cpp
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@ -589,8 +589,12 @@ int main(int argc, char *argv[]) {
int minor;
};
GLVersionPair attemptVersions[] = {
#ifdef USING_GLES2
{3, 2}, {3, 1}, {3, 0}, {2, 0},
#else
{4, 6}, {4, 5}, {4, 4}, {4, 3}, {4, 2}, {4, 1}, {4, 0},
{3, 3}, {3, 2}, {3, 1}, {3, 0},
#endif
};
SDL_GLContext glContext = nullptr;
@ -598,17 +602,20 @@ int main(int argc, char *argv[]) {
const auto &ver = attemptVersions[i];
// Make sure to request a somewhat modern GL context at least - the
// latest supported by MacOS X (really, really sad...)
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, ver.major);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, ver.minor);
#ifdef USING_GLES2
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
SetGLCoreContext(false);
#else
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SetGLCoreContext(true);
#endif
g_Screen = SDL_CreateWindow(app_name_nice.c_str(), x,y, pixel_xres, pixel_yres, mode);
if (g_Screen == nullptr) {
NativeShutdown();
fprintf(stderr, "SDL_CreateWindow failed: %s\n", SDL_GetError());
SDL_Quit();
return 2;
continue;
}
glContext = SDL_GL_CreateContext(g_Screen);