test/testgl2.c
author Holmes Futrell <hfutrell@umail.ucsb.edu>
Thu, 01 Jan 2009 23:49:28 +0000
changeset 2950 04c9f1e4c496
parent 2328 91e601d9df8b
child 3099 82e60908fab1
permissions -rw-r--r--
Added target testdraw2 for running the test/testdraw2.c test.
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include "common.h"
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#ifdef __MACOS__
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#define HAVE_OPENGL
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#endif
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#ifdef HAVE_OPENGL
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#include "SDL_opengl.h"
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/* Undefine this if you want a flat cube instead of a rainbow cube */
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#define SHADED_CUBE
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static CommonState *state;
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static SDL_GLContext context;
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/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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static void
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quit(int rc)
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{
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    if (context) {
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        /* SDL_GL_MakeCurrent(0, NULL); *//* doesn't do anything */
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        SDL_GL_DeleteContext(context);
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    }
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    CommonQuit(state);
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    exit(rc);
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}
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static void
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Render()
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{
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    static float color[8][3] = {
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        {1.0, 1.0, 0.0},
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        {1.0, 0.0, 0.0},
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        {0.0, 0.0, 0.0},
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        {0.0, 1.0, 0.0},
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        {0.0, 1.0, 1.0},
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        {1.0, 1.0, 1.0},
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        {1.0, 0.0, 1.0},
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        {0.0, 0.0, 1.0}
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    };
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    static float cube[8][3] = {
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        {0.5, 0.5, -0.5},
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        {0.5, -0.5, -0.5},
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        {-0.5, -0.5, -0.5},
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        {-0.5, 0.5, -0.5},
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        {-0.5, 0.5, 0.5},
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        {0.5, 0.5, 0.5},
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        {0.5, -0.5, 0.5},
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        {-0.5, -0.5, 0.5}
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    };
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    /* Do our drawing, too. */
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    glClearColor(0.0, 0.0, 0.0, 1.0);
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    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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    glBegin(GL_QUADS);
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#ifdef SHADED_CUBE
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    glColor3fv(color[0]);
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    glVertex3fv(cube[0]);
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    glColor3fv(color[1]);
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    glVertex3fv(cube[1]);
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    glColor3fv(color[2]);
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    glVertex3fv(cube[2]);
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    glColor3fv(color[3]);
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    glVertex3fv(cube[3]);
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    glColor3fv(color[3]);
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    glVertex3fv(cube[3]);
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    glColor3fv(color[4]);
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    glVertex3fv(cube[4]);
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    glColor3fv(color[7]);
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    glVertex3fv(cube[7]);
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    glColor3fv(color[2]);
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    glVertex3fv(cube[2]);
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    glColor3fv(color[0]);
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    glVertex3fv(cube[0]);
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    glColor3fv(color[5]);
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    glVertex3fv(cube[5]);
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    glColor3fv(color[6]);
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    glVertex3fv(cube[6]);
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    glColor3fv(color[1]);
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    glVertex3fv(cube[1]);
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    glColor3fv(color[5]);
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    glVertex3fv(cube[5]);
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    glColor3fv(color[4]);
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    glVertex3fv(cube[4]);
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    glColor3fv(color[7]);
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    glVertex3fv(cube[7]);
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    glColor3fv(color[6]);
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    glVertex3fv(cube[6]);
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    glColor3fv(color[5]);
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    glVertex3fv(cube[5]);
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    glColor3fv(color[0]);
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    glVertex3fv(cube[0]);
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    glColor3fv(color[3]);
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    glVertex3fv(cube[3]);
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    glColor3fv(color[4]);
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    glVertex3fv(cube[4]);
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    glColor3fv(color[6]);
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    glVertex3fv(cube[6]);
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    glColor3fv(color[1]);
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    glVertex3fv(cube[1]);
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    glColor3fv(color[2]);
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    glVertex3fv(cube[2]);
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    glColor3fv(color[7]);
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    glVertex3fv(cube[7]);
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#else /* flat cube */
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    glColor3f(1.0, 0.0, 0.0);
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    glVertex3fv(cube[0]);
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    glVertex3fv(cube[1]);
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    glVertex3fv(cube[2]);
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    glVertex3fv(cube[3]);
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    glColor3f(0.0, 1.0, 0.0);
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    glVertex3fv(cube[3]);
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    glVertex3fv(cube[4]);
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    glVertex3fv(cube[7]);
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    glVertex3fv(cube[2]);
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    glColor3f(0.0, 0.0, 1.0);
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    glVertex3fv(cube[0]);
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   133
    glVertex3fv(cube[5]);
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   134
    glVertex3fv(cube[6]);
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   135
    glVertex3fv(cube[1]);
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   136
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   137
    glColor3f(0.0, 1.0, 1.0);
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   138
    glVertex3fv(cube[5]);
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   139
    glVertex3fv(cube[4]);
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   140
    glVertex3fv(cube[7]);
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   141
    glVertex3fv(cube[6]);
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   142
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   143
    glColor3f(1.0, 1.0, 0.0);
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   144
    glVertex3fv(cube[5]);
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   145
    glVertex3fv(cube[0]);
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   146
    glVertex3fv(cube[3]);
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   147
    glVertex3fv(cube[4]);
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   148
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   149
    glColor3f(1.0, 0.0, 1.0);
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   150
    glVertex3fv(cube[6]);
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   151
    glVertex3fv(cube[1]);
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    glVertex3fv(cube[2]);
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   153
    glVertex3fv(cube[7]);
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   154
#endif /* SHADED_CUBE */
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    glEnd();
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   157
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   158
    glMatrixMode(GL_MODELVIEW);
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   159
    glRotatef(5.0, 1.0, 1.0, 1.0);
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}
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int
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main(int argc, char *argv[])
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{
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    int fsaa, accel;
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   166
    int value;
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   167
    int i, done;
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01e29c3e9a29 In general, fill in pointers to structures, rather than return them.
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   168
    SDL_DisplayMode mode;
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   169
    SDL_Event event;
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    Uint32 then, now, frames;
1914
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    /* Initialize parameters */
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    fsaa = 0;
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   174
    accel = 0;
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   175
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   176
    /* Initialize test framework */
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   177
    state = CommonCreateState(argv, SDL_INIT_VIDEO);
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   178
    if (!state) {
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        return 1;
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   180
    }
1915
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   181
    for (i = 1; i < argc;) {
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        int consumed;
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        consumed = CommonArg(state, i);
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   185
        if (consumed == 0) {
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   186
            if (SDL_strcasecmp(argv[i], "--fsaa") == 0) {
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   187
                ++fsaa;
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                consumed = 1;
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   189
            } else if (SDL_strcasecmp(argv[i], "--accel") == 0) {
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   190
                ++accel;
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   191
                consumed = 1;
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   192
            } else {
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   193
                consumed = -1;
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   194
            }
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   195
        }
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   196
        if (consumed < 0) {
1985
8055185ae4ed Added source color and alpha modulation support.
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diff changeset
   197
            fprintf(stderr, "Usage: %s %s [--fsaa] [--accel]\n", argv[0],
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   198
                    CommonUsage(state));
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   199
            quit(1);
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   200
        }
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   201
        i += consumed;
1914
051df511279c Added a test program framework for easy initialization.
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   202
    }
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   203
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   204
    /* Set OpenGL parameters */
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   205
    state->window_flags |= SDL_WINDOW_OPENGL;
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   206
    SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   207
    SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   208
    SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
1914
051df511279c Added a test program framework for easy initialization.
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diff changeset
   209
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
051df511279c Added a test program framework for easy initialization.
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   210
    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
051df511279c Added a test program framework for easy initialization.
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diff changeset
   211
    if (fsaa) {
051df511279c Added a test program framework for easy initialization.
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diff changeset
   212
        SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
051df511279c Added a test program framework for easy initialization.
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diff changeset
   213
        SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, fsaa);
051df511279c Added a test program framework for easy initialization.
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diff changeset
   214
    }
051df511279c Added a test program framework for easy initialization.
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diff changeset
   215
    if (accel) {
051df511279c Added a test program framework for easy initialization.
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diff changeset
   216
        SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL, 1);
051df511279c Added a test program framework for easy initialization.
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diff changeset
   217
    }
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   218
    if (!CommonInit(state)) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   219
        quit(2);
1914
051df511279c Added a test program framework for easy initialization.
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diff changeset
   220
    }
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   221
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   222
    /* Create OpenGL context */
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diff changeset
   223
    context = SDL_GL_CreateContext(state->windows[0]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   224
    if (!context) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   225
        fprintf(stderr, "SDL_GL_CreateContext(): %s\n", SDL_GetError());
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diff changeset
   226
        quit(2);
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
   227
    }
a228436a2404 Implemented multi-window OpenGL program with test framework.
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parents: 1914
diff changeset
   228
1965
a788656ca29a SDL constants are all uppercase.
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parents: 1936
diff changeset
   229
    if (state->render_flags & SDL_RENDERER_PRESENTVSYNC) {
1914
051df511279c Added a test program framework for easy initialization.
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diff changeset
   230
        SDL_GL_SetSwapInterval(1);
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   231
    } else {
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   232
        SDL_GL_SetSwapInterval(0);
051df511279c Added a test program framework for easy initialization.
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diff changeset
   233
    }
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   234
1967
01e29c3e9a29 In general, fill in pointers to structures, rather than return them.
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diff changeset
   235
    SDL_GetCurrentDisplayMode(&mode);
01e29c3e9a29 In general, fill in pointers to structures, rather than return them.
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parents: 1965
diff changeset
   236
    printf("Screen BPP: %d\n", SDL_BITSPERPIXEL(mode.format));
1914
051df511279c Added a test program framework for easy initialization.
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diff changeset
   237
    printf("\n");
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   238
    printf("Vendor     : %s\n", glGetString(GL_VENDOR));
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   239
    printf("Renderer   : %s\n", glGetString(GL_RENDERER));
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   240
    printf("Version    : %s\n", glGetString(GL_VERSION));
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   241
    printf("Extensions : %s\n", glGetString(GL_EXTENSIONS));
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   242
    printf("\n");
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   243
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
   244
    SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &value);
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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parents: 1914
diff changeset
   245
    printf("SDL_GL_RED_SIZE: requested %d, got %d\n", 5, value);
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1916
diff changeset
   246
    SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &value);
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
   247
    printf("SDL_GL_GREEN_SIZE: requested %d, got %d\n", 5, value);
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1916
diff changeset
   248
    SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &value);
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
   249
    printf("SDL_GL_BLUE_SIZE: requested %d, got %d\n", 5, value);
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1916
diff changeset
   250
    SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &value);
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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parents: 1914
diff changeset
   251
    printf("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", 16, value);
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents: 1916
diff changeset
   252
    SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &value);
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   253
    printf("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   254
    if (fsaa) {
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents: 1916
diff changeset
   255
        SDL_GL_GetAttribute(SDL_GL_MULTISAMPLEBUFFERS, &value);
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   256
        printf("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1916
diff changeset
   257
        SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &value);
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   258
        printf("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   259
               value);
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
   260
    }
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   261
    if (accel) {
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        SDL_GL_GetAttribute(SDL_GL_ACCELERATED_VISUAL, &value);
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        printf("SDL_GL_ACCELERATED_VISUAL: requested 1, got %d\n", value);
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    }
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    /* Set rendering settings */
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    glMatrixMode(GL_PROJECTION);
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    glLoadIdentity();
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    glOrtho(-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);
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    glMatrixMode(GL_MODELVIEW);
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    glLoadIdentity();
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    glEnable(GL_DEPTH_TEST);
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    glDepthFunc(GL_LESS);
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    glShadeModel(GL_SMOOTH);
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    /* Main render loop */
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    frames = 0;
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    then = SDL_GetTicks();
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    done = 0;
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    while (!done) {
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        /* Check for events */
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        ++frames;
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        while (SDL_PollEvent(&event)) {
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            CommonEvent(state, &event, &done);
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        }
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        for (i = 0; i < state->num_windows; ++i) {
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            int w, h;
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            SDL_GL_MakeCurrent(state->windows[i], context);
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            SDL_GetWindowSize(state->windows[i], &w, &h);
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            glViewport(0, 0, w, h);
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            Render();
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            SDL_GL_SwapWindow(state->windows[i]);
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        }
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    }
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    /* Print out some timing information */
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    now = SDL_GetTicks();
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    if (now > then) {
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        printf("%2.2f frames per second\n",
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               ((double) frames * 1000) / (now - then));
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    }
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    quit(0);
2232
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    return 0;
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}
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#else /* HAVE_OPENGL */
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int
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main(int argc, char *argv[])
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{
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    printf("No OpenGL support on this system\n");
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    return 1;
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}
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#endif /* HAVE_OPENGL */