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set GL attributes before creating a window

This commit is contained in:
frank 2022-08-06 18:43:12 -04:00
parent ee119ecc7e
commit 21e1e7e707
2 changed files with 13 additions and 8 deletions
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2
lib/sdl2-gfx/SDL2_gfxPrimitives.h
View File

@ -37,7 +37,7 @@ Richard Russell -- richard at rtrussell dot co dot uk
#define M_PI 3.1415926535897932384626433832795
#endif
#include "SDL2/SDL.h"
#include "SDL.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus

19
src/Game.cpp
View File

@ -50,6 +50,17 @@ Game::Game()
log_message << "GLEW " << glewGetString(GLEW_VERSION);
sb::Log::log(log_message.str());
glm::ivec2 window_size = get_configuration()["display"]["dimensions"].get<glm::ivec2>();
/* Set these before creating a window (see SDL_GLattr.html) */
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
/* Create a window with dimensions set in the config, centered, and flagged to be usable in OpenGL context */
window = SDL_CreateWindow(
get_configuration()["display"]["title"].get_ref<const std::string&>().c_str(), SDL_WINDOWPOS_CENTERED,
@ -59,6 +70,7 @@ Game::Game()
sb::Log::sdl_error("Could not create window");
flag_to_end();
}
/* Create an SDL renderer for clearing the screen to black and for logging renderer properties. Destroy renderer
* when finished.
*/
@ -170,13 +182,6 @@ void Game::load_gl_context()
SDL_DestroyRenderer(renderer);
renderer = nullptr;
}
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
if ((glcontext = SDL_GL_CreateContext(window)) == nullptr)
{
sb::Log::sdl_error("Could not get GL context");