test/testgl2.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 15 Dec 2009 20:36:31 +0000
changeset 3570 7812d3e9564e
parent 3418 fba883490f72
child 3571 19691cebb866
permissions -rw-r--r--
OpenGL hardware acceleration defaults on
slouken@1914
     1
#include <stdlib.h>
slouken@1914
     2
#include <stdio.h>
slouken@1914
     3
#include <string.h>
slouken@1914
     4
#include <math.h>
slouken@1914
     5
slouken@1915
     6
#include "common.h"
slouken@1914
     7
slouken@1914
     8
#ifdef __MACOS__
slouken@1914
     9
#define HAVE_OPENGL
slouken@1914
    10
#endif
slouken@1914
    11
slouken@1914
    12
#ifdef HAVE_OPENGL
slouken@1914
    13
slouken@1914
    14
#include "SDL_opengl.h"
slouken@1914
    15
slouken@1914
    16
/* Undefine this if you want a flat cube instead of a rainbow cube */
slouken@1914
    17
#define SHADED_CUBE
slouken@1914
    18
slouken@1915
    19
static CommonState *state;
slouken@1915
    20
static SDL_GLContext context;
slouken@1914
    21
slouken@1915
    22
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
slouken@1915
    23
static void
slouken@1915
    24
quit(int rc)
slouken@1914
    25
{
slouken@1915
    26
    if (context) {
bob@2328
    27
        /* SDL_GL_MakeCurrent(0, NULL); *//* doesn't do anything */
slouken@1915
    28
        SDL_GL_DeleteContext(context);
slouken@1914
    29
    }
slouken@1915
    30
    CommonQuit(state);
slouken@1915
    31
    exit(rc);
slouken@1914
    32
}
slouken@1914
    33
slouken@1915
    34
static void
slouken@1915
    35
Render()
slouken@1914
    36
{
slouken@1915
    37
    static float color[8][3] = {
slouken@1915
    38
        {1.0, 1.0, 0.0},
slouken@1915
    39
        {1.0, 0.0, 0.0},
slouken@1915
    40
        {0.0, 0.0, 0.0},
slouken@1915
    41
        {0.0, 1.0, 0.0},
slouken@1915
    42
        {0.0, 1.0, 1.0},
slouken@1915
    43
        {1.0, 1.0, 1.0},
slouken@1915
    44
        {1.0, 0.0, 1.0},
slouken@1915
    45
        {0.0, 0.0, 1.0}
slouken@1915
    46
    };
slouken@1915
    47
    static float cube[8][3] = {
slouken@1915
    48
        {0.5, 0.5, -0.5},
slouken@1915
    49
        {0.5, -0.5, -0.5},
slouken@1915
    50
        {-0.5, -0.5, -0.5},
slouken@1915
    51
        {-0.5, 0.5, -0.5},
slouken@1915
    52
        {-0.5, 0.5, 0.5},
slouken@1915
    53
        {0.5, 0.5, 0.5},
slouken@1915
    54
        {0.5, -0.5, 0.5},
slouken@1915
    55
        {-0.5, -0.5, 0.5}
slouken@1915
    56
    };
slouken@1914
    57
slouken@1915
    58
    /* Do our drawing, too. */
slouken@1915
    59
    glClearColor(0.0, 0.0, 0.0, 1.0);
slouken@1915
    60
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
slouken@1914
    61
slouken@1915
    62
    glBegin(GL_QUADS);
slouken@1915
    63
slouken@1915
    64
#ifdef SHADED_CUBE
slouken@1915
    65
    glColor3fv(color[0]);
slouken@1915
    66
    glVertex3fv(cube[0]);
slouken@1915
    67
    glColor3fv(color[1]);
slouken@1915
    68
    glVertex3fv(cube[1]);
slouken@1915
    69
    glColor3fv(color[2]);
slouken@1915
    70
    glVertex3fv(cube[2]);
slouken@1915
    71
    glColor3fv(color[3]);
slouken@1915
    72
    glVertex3fv(cube[3]);
slouken@1915
    73
slouken@1915
    74
    glColor3fv(color[3]);
slouken@1915
    75
    glVertex3fv(cube[3]);
slouken@1915
    76
    glColor3fv(color[4]);
slouken@1915
    77
    glVertex3fv(cube[4]);
slouken@1915
    78
    glColor3fv(color[7]);
slouken@1915
    79
    glVertex3fv(cube[7]);
slouken@1915
    80
    glColor3fv(color[2]);
slouken@1915
    81
    glVertex3fv(cube[2]);
slouken@1915
    82
slouken@1915
    83
    glColor3fv(color[0]);
slouken@1915
    84
    glVertex3fv(cube[0]);
slouken@1915
    85
    glColor3fv(color[5]);
slouken@1915
    86
    glVertex3fv(cube[5]);
slouken@1915
    87
    glColor3fv(color[6]);
slouken@1915
    88
    glVertex3fv(cube[6]);
slouken@1915
    89
    glColor3fv(color[1]);
slouken@1915
    90
    glVertex3fv(cube[1]);
slouken@1915
    91
slouken@1915
    92
    glColor3fv(color[5]);
slouken@1915
    93
    glVertex3fv(cube[5]);
slouken@1915
    94
    glColor3fv(color[4]);
slouken@1915
    95
    glVertex3fv(cube[4]);
slouken@1915
    96
    glColor3fv(color[7]);
slouken@1915
    97
    glVertex3fv(cube[7]);
slouken@1915
    98
    glColor3fv(color[6]);
slouken@1915
    99
    glVertex3fv(cube[6]);
slouken@1915
   100
slouken@1915
   101
    glColor3fv(color[5]);
slouken@1915
   102
    glVertex3fv(cube[5]);
slouken@1915
   103
    glColor3fv(color[0]);
slouken@1915
   104
    glVertex3fv(cube[0]);
slouken@1915
   105
    glColor3fv(color[3]);
slouken@1915
   106
    glVertex3fv(cube[3]);
slouken@1915
   107
    glColor3fv(color[4]);
slouken@1915
   108
    glVertex3fv(cube[4]);
slouken@1915
   109
slouken@1915
   110
    glColor3fv(color[6]);
slouken@1915
   111
    glVertex3fv(cube[6]);
slouken@1915
   112
    glColor3fv(color[1]);
slouken@1915
   113
    glVertex3fv(cube[1]);
slouken@1915
   114
    glColor3fv(color[2]);
slouken@1915
   115
    glVertex3fv(cube[2]);
slouken@1915
   116
    glColor3fv(color[7]);
slouken@1915
   117
    glVertex3fv(cube[7]);
slouken@1915
   118
#else /* flat cube */
slouken@1915
   119
    glColor3f(1.0, 0.0, 0.0);
slouken@1915
   120
    glVertex3fv(cube[0]);
slouken@1915
   121
    glVertex3fv(cube[1]);
slouken@1915
   122
    glVertex3fv(cube[2]);
slouken@1915
   123
    glVertex3fv(cube[3]);
slouken@1915
   124
slouken@1915
   125
    glColor3f(0.0, 1.0, 0.0);
slouken@1915
   126
    glVertex3fv(cube[3]);
slouken@1915
   127
    glVertex3fv(cube[4]);
slouken@1915
   128
    glVertex3fv(cube[7]);
slouken@1915
   129
    glVertex3fv(cube[2]);
slouken@1915
   130
slouken@1915
   131
    glColor3f(0.0, 0.0, 1.0);
slouken@1915
   132
    glVertex3fv(cube[0]);
slouken@1915
   133
    glVertex3fv(cube[5]);
slouken@1915
   134
    glVertex3fv(cube[6]);
slouken@1915
   135
    glVertex3fv(cube[1]);
slouken@1915
   136
slouken@1915
   137
    glColor3f(0.0, 1.0, 1.0);
slouken@1915
   138
    glVertex3fv(cube[5]);
slouken@1915
   139
    glVertex3fv(cube[4]);
slouken@1915
   140
    glVertex3fv(cube[7]);
slouken@1915
   141
    glVertex3fv(cube[6]);
slouken@1915
   142
slouken@1915
   143
    glColor3f(1.0, 1.0, 0.0);
slouken@1915
   144
    glVertex3fv(cube[5]);
slouken@1915
   145
    glVertex3fv(cube[0]);
slouken@1915
   146
    glVertex3fv(cube[3]);
slouken@1915
   147
    glVertex3fv(cube[4]);
slouken@1915
   148
slouken@1915
   149
    glColor3f(1.0, 0.0, 1.0);
slouken@1915
   150
    glVertex3fv(cube[6]);
slouken@1915
   151
    glVertex3fv(cube[1]);
slouken@1915
   152
    glVertex3fv(cube[2]);
slouken@1915
   153
    glVertex3fv(cube[7]);
slouken@1915
   154
#endif /* SHADED_CUBE */
slouken@1915
   155
slouken@1915
   156
    glEnd();
slouken@1915
   157
slouken@1915
   158
    glMatrixMode(GL_MODELVIEW);
slouken@1915
   159
    glRotatef(5.0, 1.0, 1.0, 1.0);
slouken@1914
   160
}
slouken@1914
   161
slouken@1914
   162
int
slouken@1915
   163
main(int argc, char *argv[])
slouken@1914
   164
{
slouken@3570
   165
    int fsaa, noaccel;
slouken@1915
   166
    int value;
slouken@1915
   167
    int i, done;
slouken@1967
   168
    SDL_DisplayMode mode;
slouken@1915
   169
    SDL_Event event;
slouken@1915
   170
    Uint32 then, now, frames;
slouken@3099
   171
    int status;
slouken@1914
   172
slouken@1915
   173
    /* Initialize parameters */
slouken@1915
   174
    fsaa = 0;
slouken@3570
   175
    noaccel = 0;
slouken@1915
   176
slouken@1915
   177
    /* Initialize test framework */
slouken@1915
   178
    state = CommonCreateState(argv, SDL_INIT_VIDEO);
slouken@1915
   179
    if (!state) {
slouken@1915
   180
        return 1;
slouken@1915
   181
    }
slouken@1915
   182
    for (i = 1; i < argc;) {
slouken@1915
   183
        int consumed;
slouken@1915
   184
slouken@1915
   185
        consumed = CommonArg(state, i);
slouken@1915
   186
        if (consumed == 0) {
slouken@1915
   187
            if (SDL_strcasecmp(argv[i], "--fsaa") == 0) {
slouken@1915
   188
                ++fsaa;
slouken@1915
   189
                consumed = 1;
slouken@3570
   190
            } else if (SDL_strcasecmp(argv[i], "--noaccel") == 0) {
slouken@3570
   191
                ++noaccel;
slouken@1915
   192
                consumed = 1;
slouken@1915
   193
            } else {
slouken@1915
   194
                consumed = -1;
slouken@1915
   195
            }
slouken@1914
   196
        }
slouken@1915
   197
        if (consumed < 0) {
slouken@3570
   198
            fprintf(stderr, "Usage: %s %s [--fsaa] [--noaccel]\n", argv[0],
slouken@1915
   199
                    CommonUsage(state));
slouken@1915
   200
            quit(1);
slouken@1914
   201
        }
slouken@1915
   202
        i += consumed;
slouken@1914
   203
    }
slouken@1914
   204
slouken@1915
   205
    /* Set OpenGL parameters */
slouken@1915
   206
    state->window_flags |= SDL_WINDOW_OPENGL;
lestat@3408
   207
    state->gl_red_size = 5;
lestat@3408
   208
    state->gl_green_size = 5;
lestat@3408
   209
    state->gl_blue_size = 5;
lestat@3408
   210
    state->gl_depth_size = 16;
slouken@3418
   211
    state->gl_double_buffer = 1;
slouken@1914
   212
    if (fsaa) {
lestat@3408
   213
        state->gl_multisamplebuffers = 1;
lestat@3408
   214
        state->gl_multisamplesamples = fsaa;
slouken@1914
   215
    }
slouken@3570
   216
    state->gl_accelerated = !noaccel;
lestat@3408
   217
slouken@1915
   218
    if (!CommonInit(state)) {
slouken@1915
   219
        quit(2);
slouken@1914
   220
    }
slouken@1915
   221
slouken@1915
   222
    /* Create OpenGL context */
slouken@1915
   223
    context = SDL_GL_CreateContext(state->windows[0]);
slouken@1915
   224
    if (!context) {
slouken@1915
   225
        fprintf(stderr, "SDL_GL_CreateContext(): %s\n", SDL_GetError());
slouken@1915
   226
        quit(2);
slouken@1915
   227
    }
slouken@1915
   228
slouken@1965
   229
    if (state->render_flags & SDL_RENDERER_PRESENTVSYNC) {
slouken@1914
   230
        SDL_GL_SetSwapInterval(1);
slouken@1914
   231
    } else {
slouken@1914
   232
        SDL_GL_SetSwapInterval(0);
slouken@1914
   233
    }
slouken@1914
   234
slouken@1967
   235
    SDL_GetCurrentDisplayMode(&mode);
slouken@1967
   236
    printf("Screen BPP: %d\n", SDL_BITSPERPIXEL(mode.format));
slouken@1914
   237
    printf("\n");
slouken@1914
   238
    printf("Vendor     : %s\n", glGetString(GL_VENDOR));
slouken@1914
   239
    printf("Renderer   : %s\n", glGetString(GL_RENDERER));
slouken@1914
   240
    printf("Version    : %s\n", glGetString(GL_VERSION));
slouken@1914
   241
    printf("Extensions : %s\n", glGetString(GL_EXTENSIONS));
slouken@1914
   242
    printf("\n");
slouken@1914
   243
slouken@3139
   244
    status = SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &value);
slouken@3099
   245
    if (!status) {
slouken@3099
   246
        printf("SDL_GL_RED_SIZE: requested %d, got %d\n", 5, value);
slouken@3099
   247
    } else {
slouken@3099
   248
        printf("Failed to get SDL_GL_RED_SIZE: %s\n", SDL_GetError());
slouken@3099
   249
    }
slouken@3139
   250
    status = SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &value);
slouken@3099
   251
    if (!status) {
slouken@3099
   252
        printf("SDL_GL_GREEN_SIZE: requested %d, got %d\n", 5, value);
slouken@3099
   253
    } else {
slouken@3099
   254
        printf("Failed to get SDL_GL_GREEN_SIZE: %s\n", SDL_GetError());
slouken@3099
   255
    }
slouken@3139
   256
    status = SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &value);
slouken@3099
   257
    if (!status) {
slouken@3099
   258
        printf("SDL_GL_BLUE_SIZE: requested %d, got %d\n", 5, value);
slouken@3099
   259
    } else {
slouken@3099
   260
        printf("Failed to get SDL_GL_BLUE_SIZE: %s\n", SDL_GetError());
slouken@3099
   261
    }
slouken@3139
   262
    status = SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &value);
slouken@3099
   263
    if (!status) {
slouken@3099
   264
        printf("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", 16, value);
slouken@3099
   265
    } else {
slouken@3099
   266
        printf("Failed to get SDL_GL_DEPTH_SIZE: %s\n", SDL_GetError());
slouken@3099
   267
    }
slouken@1914
   268
    if (fsaa) {
slouken@3139
   269
        status = SDL_GL_GetAttribute(SDL_GL_MULTISAMPLEBUFFERS, &value);
slouken@3099
   270
        if (!status) {
slouken@3099
   271
            printf("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
slouken@3099
   272
        } else {
slouken@3139
   273
            printf("Failed to get SDL_GL_MULTISAMPLEBUFFERS: %s\n",
slouken@3139
   274
                   SDL_GetError());
slouken@3099
   275
        }
slouken@3139
   276
        status = SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &value);
slouken@3099
   277
        if (!status) {
slouken@3139
   278
            printf("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
slouken@3139
   279
                   value);
slouken@3099
   280
        } else {
slouken@3139
   281
            printf("Failed to get SDL_GL_MULTISAMPLESAMPLES: %s\n",
slouken@3139
   282
                   SDL_GetError());
slouken@3099
   283
        }
slouken@1914
   284
    }
slouken@3570
   285
    status = SDL_GL_GetAttribute(SDL_GL_ACCELERATED_VISUAL, &value);
slouken@3570
   286
    if (!status) {
slouken@3570
   287
        printf("SDL_GL_ACCELERATED_VISUAL: requested %d, got %d\n", !noaccel,
slouken@3570
   288
               value);
slouken@3570
   289
    } else {
slouken@3570
   290
        printf("Failed to get SDL_GL_ACCELERATED_VISUAL: %s\n",
slouken@3570
   291
               SDL_GetError());
slouken@1914
   292
    }
slouken@1915
   293
slouken@1915
   294
    /* Set rendering settings */
slouken@1915
   295
    glMatrixMode(GL_PROJECTION);
slouken@1915
   296
    glLoadIdentity();
slouken@1915
   297
    glOrtho(-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);
slouken@1915
   298
    glMatrixMode(GL_MODELVIEW);
slouken@1915
   299
    glLoadIdentity();
slouken@1915
   300
    glEnable(GL_DEPTH_TEST);
slouken@1915
   301
    glDepthFunc(GL_LESS);
slouken@1915
   302
    glShadeModel(GL_SMOOTH);
slouken@1915
   303
slouken@1915
   304
    /* Main render loop */
slouken@1915
   305
    frames = 0;
slouken@1915
   306
    then = SDL_GetTicks();
slouken@1915
   307
    done = 0;
slouken@1915
   308
    while (!done) {
slouken@1915
   309
        /* Check for events */
slouken@1915
   310
        ++frames;
slouken@1915
   311
        while (SDL_PollEvent(&event)) {
slouken@1915
   312
            CommonEvent(state, &event, &done);
slouken@1915
   313
        }
slouken@1915
   314
        for (i = 0; i < state->num_windows; ++i) {
slouken@1915
   315
            int w, h;
slouken@1915
   316
            SDL_GL_MakeCurrent(state->windows[i], context);
slouken@1915
   317
            SDL_GetWindowSize(state->windows[i], &w, &h);
slouken@1915
   318
            glViewport(0, 0, w, h);
slouken@1915
   319
            Render();
slouken@1915
   320
            SDL_GL_SwapWindow(state->windows[i]);
slouken@1915
   321
        }
slouken@1914
   322
    }
slouken@1914
   323
slouken@1915
   324
    /* Print out some timing information */
slouken@1915
   325
    now = SDL_GetTicks();
slouken@1915
   326
    if (now > then) {
slouken@1915
   327
        printf("%2.2f frames per second\n",
slouken@1915
   328
               ((double) frames * 1000) / (now - then));
slouken@1914
   329
    }
slouken@1915
   330
    quit(0);
slouken@2232
   331
    return 0;
slouken@1914
   332
}
slouken@1914
   333
slouken@1914
   334
#else /* HAVE_OPENGL */
slouken@1914
   335
slouken@1914
   336
int
slouken@1914
   337
main(int argc, char *argv[])
slouken@1914
   338
{
slouken@1914
   339
    printf("No OpenGL support on this system\n");
slouken@1914
   340
    return 1;
slouken@1914
   341
}
slouken@1914
   342
slouken@1914
   343
#endif /* HAVE_OPENGL */