65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
// gcc example/c/gl_sdl2.c build/src/gl.c -Ibuild/include `sdl2-config --libs --cflags` -ldl
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#include <stdlib.h>
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#include <stdio.h>
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#include <glad/gl.h>
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#include <SDL.h>
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#include <SDL_opengl.h>
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const GLuint WIDTH = 800, HEIGHT = 600;
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int main(void) {
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// code without checking for errors
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SDL_Init(SDL_INIT_VIDEO);
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
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SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
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SDL_Window *window = SDL_CreateWindow(
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"[glad] GL with SDL",
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SDL_WINDOWPOS_CENTERED,
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SDL_WINDOWPOS_CENTERED,
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WIDTH, HEIGHT,
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SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN
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);
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SDL_GLContext context = SDL_GL_CreateContext(window);
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int version = gladLoadGL((GLADloadfunc) SDL_GL_GetProcAddress);
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printf("GL %d.%d\n", GLAD_VERSION_MAJOR(version), GLAD_VERSION_MINOR(version));
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int exit = 0;
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while(!exit) {
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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switch(event.type) {
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case SDL_QUIT:
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exit = 1;
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break;
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case SDL_KEYUP:
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if (event.key.keysym.sym == SDLK_ESCAPE) {
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exit = 1;
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}
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break;
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default:
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break;
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}
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}
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glClearColor(0.7f, 0.9f, 0.1f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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SDL_GL_SwapWindow(window);
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SDL_Delay(1);
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}
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SDL_GL_DeleteContext(context);
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SDL_DestroyWindow(window);
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SDL_Quit();
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return 0;
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}
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