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(maybe) Simplified test program

file_4329.txt (text/plain), 4.15 KB, created by Ryan C. Gordon on 2018-10-23 18:03:46 UTC

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Description:

Filename:

MIME Type:

Creator: Ryan C. Gordon

Created: 2018-10-23 18:03:46 UTC

Size: 4.15 KB

patch

obsolete

>//
>//  main.c
>//  testsdlgl
>//
>//  Created by Daniel Bokser on 9/26/18.
>//  Copyright ÃÂ© 2018 dan. All rights reserved.
>//
>#include <stdio.h>
>#include <SDL2/SDL.h>
>#include <OpenGL/gl.h>
>
>#define USE_RENDERER 0
>#define LATE_INIT 1
>
>typedef struct ThreadContext {
>    SDL_Window *window;
>    SDL_GLContext context;
>    float r;
>    float g;
>    float b;
>} ThreadContext;
>
>static SDL_bool isRunning = SDL_TRUE;
>static SDL_atomic_t stopflag;
>static SDL_mutex *mutex = NULL;
>static void (*mark)(GLsizei, const void *) = NULL;
>
>void renderWindow(const char *title, ThreadContext *tc) {
>    char buf[128];
>    SDL_snprintf(buf, sizeof (buf), "Starting %s render", title);
>
>    SDL_LockMutex(mutex);
>    if (mark) mark(0, buf);
>
>    SDL_Window *curwin = SDL_GL_GetCurrentWindow();
>    SDL_GLContext curctx = SDL_GL_GetCurrentContext();
>    if ((curwin != tc->window) || (curctx != tc->context)) {
>        printf("%s: %p %p vs %p %p\n", title, curwin, curctx, tc->window, tc->context);
>    }
>
>    SDL_GL_MakeCurrent(tc->window, tc->context);
>    glClearColor(tc->r, tc->g, tc->b, 1.0);
>    glClear(GL_COLOR_BUFFER_BIT);
>    tc->r += 1.0f / 255.0f;
>    if (tc->r > 1.0f) {
>        tc->r = 0;
>    }
>
>    SDL_GL_SwapWindow(tc->window);
>    SDL_snprintf(buf, sizeof (buf), "Ending %s render", title);
>    if (mark) mark(0, buf);
>    SDL_UnlockMutex(mutex);
>SDL_Delay(10);
>}
>
>static int threntry(void *arg) {
>    ThreadContext *tc = (ThreadContext *) arg;
>    while (!SDL_AtomicGet(&stopflag)) {
>        renderWindow("window 2", tc);
>    }
>    return 0;
>}
>
>int initWindow(const char *title, ThreadContext *tc) {
>    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
>    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
>    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
>    tc->window = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 300, 300, SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL);
>    tc->context = SDL_GL_CreateContext(tc->window);
>    SDL_GL_MakeCurrent(tc->window, tc->context);
>
>    printf("Create %s\n", title);
>
>    return 0;
>}
>int main(int argc, const char * argv[]) {
>    SDL_Init(SDL_INIT_EVERYTHING);
>
>    mutex = SDL_CreateMutex();
>
>#if USE_RENDERER
>    SDL_Window *window = SDL_CreateWindow("Test SDL Renderer", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 300, 300, SDL_WINDOW_SHOWN );
>    SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
>    Uint8 r = 0;
>#else
>    ThreadContext tc1;
>    if (initWindow("window 1", &tc1)) {
>        return 1;
>    }
>    tc1.r = 1; tc1.g = 0; tc1.b = 0;
>#endif
>
>    mark = (void (*)(GLsizei, const void *)) SDL_GL_GetProcAddress("glStringMarkerGREMEDY");
>
>    ThreadContext tc2;
>    SDL_Thread *thr = NULL;
>
>#if LATE_INIT
>    int isInited = 0;
>    int count = 30;
>#else
>    if (initWindow("window 2", &tc2)) {
>        return 1;
>    }
>    tc2.r = 0; tc2.g = 0; tc2.b = 1;
>    thr = SDL_CreateThread(threntry, "2ndContext", &tc2);
>#endif
>
>    while (isRunning) {
>        SDL_Event e;
>        while (SDL_PollEvent(&e)) {
>            switch (e.type) {
>                case SDL_QUIT:
>                    isRunning = SDL_FALSE;
>                    break;
>
>                case SDL_WINDOWEVENT:
>                    if (e.window.event == SDL_WINDOWEVENT_CLOSE) {
>                        isRunning = SDL_FALSE;
>                        break;
>                    }
>                    break;
>            }
>        }
>
>#if LATE_INIT
>        if (!isInited && count <= 0) {
>            if (initWindow("window 2", &tc2)) {
>                return 1;
>            }
>            tc2.r = 0; tc2.g = 0; tc2.b = 1;
>            isInited = 1;
>            thr = SDL_CreateThread(threntry, "2ndContext", &tc2);
>        } else {
>            count--;
>        }
>#endif
>
>#if USE_RENDERER
>        SDL_SetRenderDrawColor(renderer, r++, 0, 0, 255);
>        SDL_RenderClear(renderer);
>        SDL_RenderPresent(renderer);
>#else
>        renderWindow("window 1", &tc1);
>#endif
>    }
>
>    if (thr) {
>        SDL_AtomicSet(&stopflag, 1);
>        SDL_WaitThread(thr, NULL);
>    }
>
>    SDL_Quit();
>
>    return 0;
>}
>

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Attachments on bug 4329: 3392 | 3394 | 3403

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.