2014年6月29日 · I try to run simple test.cpp from Twinklebar SDL tutorial, I get this error: test.cpp:2:10: fatal error: 'SDL2/SDL.h' file not found So I look up the sdl development package in Ubuntu/Mint: apti...

2015年9月2日 · In SDL / SDL2, in an effort to try to make cross-platform development of certain kinds of applications simpler, SDL creates a custom "entry-point" to your application. That is, your int main() is not the real main. What happens is, main is defined as a macro in the SDL header and this causes your main to be renamed to SDL_main or similar.

2016年6月30日 · I'm using the SDL library in my project and I'm working on a Windows platform. When I'd decided to move my project to SDL 2, I encountered a problem: There was an option in SDL 1.2 to print output from stdout/stderr into the console window, rather than to files by defining a NO_STDIO_REDIRECT macro. However, I haven't found that macro in SDL 2.

2015年1月19日 · It should be included as <SDL.h>. Now sdl2-config --cflags will give you the correct path. The former only works if SDL2 has been installed into one of the default include paths, which is not the case with homebrew (but common in Linux which is why you see the former so much in the wild).

2019年5月12日 · It is problemmatic to keep previous frame's contents and just add more lines; short explaination is because SDL_RenderPresent documentation says The backbuffer should be considered invalidated after each present (and long explaination is basically a list of reasons why it …

2018年10月19日 · SDL talks to the hardware directly and has a surprising amount of optimisation. Converting the surface to a texture, presumably involves blitting, which means copying a substantial amount of memory. However, it seems that in this case at the time of writing this, there is absolutely no difference at all.

2020年8月25日 · Right now I’m using the current latest SDL2, version 2.0.12. As far as I can tell, I’m doing everything in approximately the right way; calling SDL_StartTextInput() when keyboard focus is moved to an (in-game-rendered) editable text field, and SDL_StopTextInput() when the keyboard focus leaves it, as well as setting SDL_SetTextInputRect ...

2015年11月27日 · they are different. if you look at sdl2/sdl_pixels.h you'll find:. sdl_pixelformat_rgb24 = sdl_define_pixelformat(sdl_pixeltype_arrayu8, sdl_arrayorder_rgb, 0, 24, 3) sdl_pixelformat_rgb888 = sdl_define_pixelformat(sdl_pixeltype_packed32, sdl_packedorder_xrgb, sdl_packedlayout_8888, 24, 4) sdl_pixelformat_rgbx8888 = sdl_define_pixelformat(sdl_pixeltype_packed32, sdl_packedorder_rgbx, sdl ...

2015年2月5日 · SDL_RenderClear will clear the current rendering buffer. SDL_RenderCopy will render textures to the current rendering buffer. SDL_RenderPresent will swap the buffers, showing everything that was rendered using SDL_RenderCopy since the last …

sdl-2; Share. Follow edited Aug 6, 2017 at 22:17. genpfault. 52.2k 12 12 gold badges 91 91 silver badges ...