From 6aaedb813fa11ba0679c3051bc2eb28646b9506c Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 30 Aug 2025 16:53:58 -0700 Subject: Update to SDL3 --- .../examples/renderer/02-primitives/README.txt | 7 ++ .../examples/renderer/02-primitives/primitives.c | 95 +++++++++++++++++++++ .../examples/renderer/02-primitives/thumbnail.png | Bin 0 -> 8761 bytes 3 files changed, 102 insertions(+) create mode 100644 src/contrib/SDL-3.2.20/examples/renderer/02-primitives/README.txt create mode 100644 src/contrib/SDL-3.2.20/examples/renderer/02-primitives/primitives.c create mode 100644 src/contrib/SDL-3.2.20/examples/renderer/02-primitives/thumbnail.png (limited to 'src/contrib/SDL-3.2.20/examples/renderer/02-primitives') diff --git a/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/README.txt b/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/README.txt new file mode 100644 index 0000000..82da8e5 --- /dev/null +++ b/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/README.txt @@ -0,0 +1,7 @@ +This example creates an SDL window and renderer, and then draws some lines, +rectangles and points to it every frame. + +This is just a quick overview of simple drawing primitives; futher examples +will explore them in more detail. + + diff --git a/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/primitives.c b/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/primitives.c new file mode 100644 index 0000000..5cfd731 --- /dev/null +++ b/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/primitives.c @@ -0,0 +1,95 @@ +/* + * This example creates an SDL window and renderer, and then draws some lines, + * rectangles and points to it every frame. + * + * This code is public domain. Feel free to use it for any purpose! + */ + +#define SDL_MAIN_USE_CALLBACKS 1 /* use the callbacks instead of main() */ +#include +#include + +/* We will use this renderer to draw into this window every frame. */ +static SDL_Window *window = NULL; +static SDL_Renderer *renderer = NULL; +static SDL_FPoint points[500]; + +/* This function runs once at startup. */ +SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[]) +{ + int i; + + SDL_SetAppMetadata("Example Renderer Primitives", "1.0", "com.example.renderer-primitives"); + + if (!SDL_Init(SDL_INIT_VIDEO)) { + SDL_Log("Couldn't initialize SDL: %s", SDL_GetError()); + return SDL_APP_FAILURE; + } + + if (!SDL_CreateWindowAndRenderer("examples/renderer/primitives", 640, 480, 0, &window, &renderer)) { + SDL_Log("Couldn't create window/renderer: %s", SDL_GetError()); + return SDL_APP_FAILURE; + } + + /* set up some random points */ + for (i = 0; i < SDL_arraysize(points); i++) { + points[i].x = (SDL_randf() * 440.0f) + 100.0f; + points[i].y = (SDL_randf() * 280.0f) + 100.0f; + } + + return SDL_APP_CONTINUE; /* carry on with the program! */ +} + +/* This function runs when a new event (mouse input, keypresses, etc) occurs. */ +SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event) +{ + if (event->type == SDL_EVENT_QUIT) { + return SDL_APP_SUCCESS; /* end the program, reporting success to the OS. */ + } + return SDL_APP_CONTINUE; /* carry on with the program! */ +} + +/* This function runs once per frame, and is the heart of the program. */ +SDL_AppResult SDL_AppIterate(void *appstate) +{ + SDL_FRect rect; + + /* as you can see from this, rendering draws over whatever was drawn before it. */ + SDL_SetRenderDrawColor(renderer, 33, 33, 33, SDL_ALPHA_OPAQUE); /* dark gray, full alpha */ + SDL_RenderClear(renderer); /* start with a blank canvas. */ + + /* draw a filled rectangle in the middle of the canvas. */ + SDL_SetRenderDrawColor(renderer, 0, 0, 255, SDL_ALPHA_OPAQUE); /* blue, full alpha */ + rect.x = rect.y = 100; + rect.w = 440; + rect.h = 280; + SDL_RenderFillRect(renderer, &rect); + + /* draw some points across the canvas. */ + SDL_SetRenderDrawColor(renderer, 255, 0, 0, SDL_ALPHA_OPAQUE); /* red, full alpha */ + SDL_RenderPoints(renderer, points, SDL_arraysize(points)); + + /* draw a unfilled rectangle in-set a little bit. */ + SDL_SetRenderDrawColor(renderer, 0, 255, 0, SDL_ALPHA_OPAQUE); /* green, full alpha */ + rect.x += 30; + rect.y += 30; + rect.w -= 60; + rect.h -= 60; + SDL_RenderRect(renderer, &rect); + + /* draw two lines in an X across the whole canvas. */ + SDL_SetRenderDrawColor(renderer, 255, 255, 0, SDL_ALPHA_OPAQUE); /* yellow, full alpha */ + SDL_RenderLine(renderer, 0, 0, 640, 480); + SDL_RenderLine(renderer, 0, 480, 640, 0); + + SDL_RenderPresent(renderer); /* put it all on the screen! */ + + return SDL_APP_CONTINUE; /* carry on with the program! */ +} + +/* This function runs once at shutdown. */ +void SDL_AppQuit(void *appstate, SDL_AppResult result) +{ + /* SDL will clean up the window/renderer for us. */ +} + diff --git a/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/thumbnail.png b/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/thumbnail.png new file mode 100644 index 0000000..4ddf2ab Binary files /dev/null and b/src/contrib/SDL-3.2.20/examples/renderer/02-primitives/thumbnail.png differ -- cgit v1.2.3