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- How to draw circles, arcs and vector graphics in SDL?
SDL allows for third party libs to draw on a texture If cairo was desirable, it could be used in a
- c++ - What is an SDL renderer? - Stack Overflow
The SDL_Renderer renders SDL_Texture, which stores the pixel information of one element It's the new version of SDL_Surface which is much the same The difference is mostly that SDL_Surface is just a struct containing pixel information, while SDL_Texture is an efficient, driver-specific representation of pixel data
- c - How to render text in SDL2? - Stack Overflow
SDL_Color TextColor = { 255, 0, 0, 255}; Red SDL color TTF_Font* Font; The font to be loaded from the ttf file SDL_Surface* TextSurface; The surface necessary to create the font texture SDL_Texture* TextTexture; The font texture prepared for render SDL_Rect TextRect; Text rectangle area with the position for the texture text
- Achieving a constant frame rate in SDL - Stack Overflow
I'm trying to make an SDL program that runs with a constant frame rate However I'm finding that even though my program is lagging a lot and skipping a lot of frames (even though it's running at a low frame and isn't rendering much)
- c++ - SDL2 on Raspberry Pi without X? - Stack Overflow
SDL_VIDEODRIVER available: x11 wayland KMSDRM RPI dummy SDL_VIDEODRIVER usable : KMSDRM SDL_VIDEODRIVER selected : KMSDRM SDL_CreateWindow(): Could not initialize OpenGL GLES library # with envvars, succeeds: $ SDL_VIDEO_EGL_DRIVER=libEGL so SDL_VIDEO_GL_DRIVER=libGLESv2 so a out Testing video drivers
- c++ - How to draw pixels in SDL 2. 0? - Stack Overflow
If you want to set a large rectangle of pixels at once, e g the entire screen or a sprite, use SDL_Texture + SDL_RenderCopy and possibly SDL_TEXTUREACCESS_STREAMING, as that will be much faster Examples at: What is a Blit in SDL? Rendering pixels from array of RGB values in SDL 1 2? Tested on libsdl 2 0 2, Ubuntu 15 10
- c - Drawing a rectangle with SDL2 - Stack Overflow
SDL_Renderer and SDL_Window needs to be set up before you can use them You already create your window properly, so I won't cover that Here's how to set up an SDL_Renderer SDL_Renderer* SDL_CreateRenderer(SDL_Window* window, int index, Uint32 flags)
- SDL2 C++ Taking a screenshot - Stack Overflow
Great answer! The linked question referred to by the questioner uses SDL_RenderReadPixels to read the data The call to SDL_GetWindowSurface seems to be there only to establish the parameters to feed into SDL_CreateRGBSurface You’ve hard-coded these values but can that be relied on? How would you query for these values with the new API
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