view test/testgl2.c @ 3798:c8b3d3d13ed1 SDL-ryan-multiple-audio-device

Audio bootstraps can now specify that a driver is only to be used if explicitly requested (for things like the "disk" driver that is always available but you would never want to default to using). Trimmed out code that can be handled by stubs in the core. The "dummy" driver is pretty damned small now. :)
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Oct 2006 21:27:53 +0000
parents 8055185ae4ed
children 114a541cfae2
line wrap: on
line source

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>

#include "common.h"

#ifdef __MACOS__
#define HAVE_OPENGL
#endif

#ifdef HAVE_OPENGL

#include "SDL_opengl.h"

/* Undefine this if you want a flat cube instead of a rainbow cube */
#define SHADED_CUBE

static CommonState *state;
static SDL_GLContext context;

/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void
quit(int rc)
{
    if (context) {
        SDL_GL_MakeCurrent(0, NULL);
        SDL_GL_DeleteContext(context);
    }
    CommonQuit(state);
    exit(rc);
}

static void
Render()
{
    static float color[8][3] = {
        {1.0, 1.0, 0.0},
        {1.0, 0.0, 0.0},
        {0.0, 0.0, 0.0},
        {0.0, 1.0, 0.0},
        {0.0, 1.0, 1.0},
        {1.0, 1.0, 1.0},
        {1.0, 0.0, 1.0},
        {0.0, 0.0, 1.0}
    };
    static float cube[8][3] = {
        {0.5, 0.5, -0.5},
        {0.5, -0.5, -0.5},
        {-0.5, -0.5, -0.5},
        {-0.5, 0.5, -0.5},
        {-0.5, 0.5, 0.5},
        {0.5, 0.5, 0.5},
        {0.5, -0.5, 0.5},
        {-0.5, -0.5, 0.5}
    };

    /* Do our drawing, too. */
    glClearColor(0.0, 0.0, 0.0, 1.0);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glBegin(GL_QUADS);

#ifdef SHADED_CUBE
    glColor3fv(color[0]);
    glVertex3fv(cube[0]);
    glColor3fv(color[1]);
    glVertex3fv(cube[1]);
    glColor3fv(color[2]);
    glVertex3fv(cube[2]);
    glColor3fv(color[3]);
    glVertex3fv(cube[3]);

    glColor3fv(color[3]);
    glVertex3fv(cube[3]);
    glColor3fv(color[4]);
    glVertex3fv(cube[4]);
    glColor3fv(color[7]);
    glVertex3fv(cube[7]);
    glColor3fv(color[2]);
    glVertex3fv(cube[2]);

    glColor3fv(color[0]);
    glVertex3fv(cube[0]);
    glColor3fv(color[5]);
    glVertex3fv(cube[5]);
    glColor3fv(color[6]);
    glVertex3fv(cube[6]);
    glColor3fv(color[1]);
    glVertex3fv(cube[1]);

    glColor3fv(color[5]);
    glVertex3fv(cube[5]);
    glColor3fv(color[4]);
    glVertex3fv(cube[4]);
    glColor3fv(color[7]);
    glVertex3fv(cube[7]);
    glColor3fv(color[6]);
    glVertex3fv(cube[6]);

    glColor3fv(color[5]);
    glVertex3fv(cube[5]);
    glColor3fv(color[0]);
    glVertex3fv(cube[0]);
    glColor3fv(color[3]);
    glVertex3fv(cube[3]);
    glColor3fv(color[4]);
    glVertex3fv(cube[4]);

    glColor3fv(color[6]);
    glVertex3fv(cube[6]);
    glColor3fv(color[1]);
    glVertex3fv(cube[1]);
    glColor3fv(color[2]);
    glVertex3fv(cube[2]);
    glColor3fv(color[7]);
    glVertex3fv(cube[7]);
#else /* flat cube */
    glColor3f(1.0, 0.0, 0.0);
    glVertex3fv(cube[0]);
    glVertex3fv(cube[1]);
    glVertex3fv(cube[2]);
    glVertex3fv(cube[3]);

    glColor3f(0.0, 1.0, 0.0);
    glVertex3fv(cube[3]);
    glVertex3fv(cube[4]);
    glVertex3fv(cube[7]);
    glVertex3fv(cube[2]);

    glColor3f(0.0, 0.0, 1.0);
    glVertex3fv(cube[0]);
    glVertex3fv(cube[5]);
    glVertex3fv(cube[6]);
    glVertex3fv(cube[1]);

    glColor3f(0.0, 1.0, 1.0);
    glVertex3fv(cube[5]);
    glVertex3fv(cube[4]);
    glVertex3fv(cube[7]);
    glVertex3fv(cube[6]);

    glColor3f(1.0, 1.0, 0.0);
    glVertex3fv(cube[5]);
    glVertex3fv(cube[0]);
    glVertex3fv(cube[3]);
    glVertex3fv(cube[4]);

    glColor3f(1.0, 0.0, 1.0);
    glVertex3fv(cube[6]);
    glVertex3fv(cube[1]);
    glVertex3fv(cube[2]);
    glVertex3fv(cube[7]);
#endif /* SHADED_CUBE */

    glEnd();

    glMatrixMode(GL_MODELVIEW);
    glRotatef(5.0, 1.0, 1.0, 1.0);
}

int
main(int argc, char *argv[])
{
    int fsaa, accel;
    int value;
    int i, done;
    SDL_DisplayMode mode;
    SDL_Event event;
    Uint32 then, now, frames;

    /* Initialize parameters */
    fsaa = 0;
    accel = 0;

    /* Initialize test framework */
    state = CommonCreateState(argv, SDL_INIT_VIDEO);
    if (!state) {
        return 1;
    }
    for (i = 1; i < argc;) {
        int consumed;

        consumed = CommonArg(state, i);
        if (consumed == 0) {
            if (SDL_strcasecmp(argv[i], "--fsaa") == 0) {
                ++fsaa;
                consumed = 1;
            } else if (SDL_strcasecmp(argv[i], "--accel") == 0) {
                ++accel;
                consumed = 1;
            } else {
                consumed = -1;
            }
        }
        if (consumed < 0) {
            fprintf(stderr, "Usage: %s %s [--fsaa] [--accel]\n", argv[0],
                    CommonUsage(state));
            quit(1);
        }
        i += consumed;
    }

    /* Set OpenGL parameters */
    state->window_flags |= SDL_WINDOW_OPENGL;
    SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
    SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
    SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
    if (fsaa) {
        SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
        SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, fsaa);
    }
    if (accel) {
        SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL, 1);
    }
    if (!CommonInit(state)) {
        quit(2);
    }

    /* Create OpenGL context */
    context = SDL_GL_CreateContext(state->windows[0]);
    if (!context) {
        fprintf(stderr, "SDL_GL_CreateContext(): %s\n", SDL_GetError());
        quit(2);
    }
    if (SDL_GL_MakeCurrent(state->windows[0], context) < 0) {
        fprintf(stderr, "SDL_GL_MakeCurrent(): %s\n", SDL_GetError());
        quit(2);
    }

    if (state->render_flags & SDL_RENDERER_PRESENTVSYNC) {
        SDL_GL_SetSwapInterval(1);
    } else {
        SDL_GL_SetSwapInterval(0);
    }

    SDL_GetCurrentDisplayMode(&mode);
    printf("Screen BPP: %d\n", SDL_BITSPERPIXEL(mode.format));
    printf("\n");
    printf("Vendor     : %s\n", glGetString(GL_VENDOR));
    printf("Renderer   : %s\n", glGetString(GL_RENDERER));
    printf("Version    : %s\n", glGetString(GL_VERSION));
    printf("Extensions : %s\n", glGetString(GL_EXTENSIONS));
    printf("\n");

    SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &value);
    printf("SDL_GL_RED_SIZE: requested %d, got %d\n", 5, value);
    SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &value);
    printf("SDL_GL_GREEN_SIZE: requested %d, got %d\n", 5, value);
    SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &value);
    printf("SDL_GL_BLUE_SIZE: requested %d, got %d\n", 5, value);
    SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &value);
    printf("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", 16, value);
    SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &value);
    printf("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
    if (fsaa) {
        SDL_GL_GetAttribute(SDL_GL_MULTISAMPLEBUFFERS, &value);
        printf("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
        SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &value);
        printf("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
               value);
    }
    if (accel) {
        SDL_GL_GetAttribute(SDL_GL_ACCELERATED_VISUAL, &value);
        printf("SDL_GL_ACCELERATED_VISUAL: requested 1, got %d\n", value);
    }

    /* Set rendering settings */
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);
    glShadeModel(GL_SMOOTH);

    /* Main render loop */
    frames = 0;
    then = SDL_GetTicks();
    done = 0;
    while (!done) {
        /* Check for events */
        ++frames;
        while (SDL_PollEvent(&event)) {
            CommonEvent(state, &event, &done);
        }
        for (i = 0; i < state->num_windows; ++i) {
            int w, h;
            SDL_GL_MakeCurrent(state->windows[i], context);
            SDL_GetWindowSize(state->windows[i], &w, &h);
            glViewport(0, 0, w, h);
            Render();
            SDL_GL_SwapWindow(state->windows[i]);
        }
    }

    /* Print out some timing information */
    now = SDL_GetTicks();
    if (now > then) {
        printf("%2.2f frames per second\n",
               ((double) frames * 1000) / (now - then));
    }
    quit(0);
}

#else /* HAVE_OPENGL */

int
main(int argc, char *argv[])
{
    printf("No OpenGL support on this system\n");
    return 1;
}

#endif /* HAVE_OPENGL */