diff options
author | Chia-I Wu <olv@lunarg.com> | 2010-04-01 12:21:06 +0800 |
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committer | Chia-I Wu <olv@lunarg.com> | 2010-04-01 22:25:49 +0800 |
commit | 589f6740ea90c61af95a08dfe6b8bcc0a22ef4d2 (patch) | |
tree | 33e5c887ed0ebf6e4db65f75c9eed142719a4d1f /progs/egl/opengl/eglgears.c | |
parent | 57cc1db87b5cacffd3344c49062c8289b7d46e78 (diff) |
progs/egl: Port eglgears to eglut.
Diffstat (limited to 'progs/egl/opengl/eglgears.c')
-rw-r--r-- | progs/egl/opengl/eglgears.c | 241 |
1 files changed, 30 insertions, 211 deletions
diff --git a/progs/egl/opengl/eglgears.c b/progs/egl/opengl/eglgears.c index 63490953ae..28da9c0ac7 100644 --- a/progs/egl/opengl/eglgears.c +++ b/progs/egl/opengl/eglgears.c @@ -27,78 +27,16 @@ * Program runs for 5 seconds then exits, outputing framerate to console */ -#define EGL_EGLEXT_PROTOTYPES - -#include <assert.h> #include <math.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> #include <GL/gl.h> #include <EGL/egl.h> -#include <EGL/eglext.h> - -#define MAX_CONFIGS 10 -#define MAX_MODES 100 - -#define BENCHMARK - -#ifdef BENCHMARK - -/* XXX this probably isn't very portable */ - -#include <sys/time.h> -#include <unistd.h> - -/* return current time (in seconds) */ -static double -current_time(void) -{ - struct timeval tv; -#ifdef __VMS - (void) gettimeofday(&tv, NULL ); -#else - struct timezone tz; - (void) gettimeofday(&tv, &tz); -#endif - return (double) tv.tv_sec + tv.tv_usec / 1000000.0; -} - -#else /*BENCHMARK*/ - -/* dummy */ -static double -current_time(void) -{ - /* update this function for other platforms! */ - static double t = 0.0; - static int warn = 1; - if (warn) { - fprintf(stderr, "Warning: current_time() not implemented!!\n"); - warn = 0; - } - return t += 1.0; -} - -#endif /*BENCHMARK*/ - - -#ifndef M_PI -#define M_PI 3.14159265 -#endif +#include "eglut.h" static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0; static GLint gear1, gear2, gear3; static GLfloat angle = 0.0; -#if 0 -static GLfloat eyesep = 5.0; /* Eye separation. */ -static GLfloat fix_point = 40.0; /* Fixation point distance. */ -static GLfloat left, right, asp; /* Stereo frustum params. */ -#endif - - /* * * Draw a gear wheel. You'll probably want to call this function when @@ -270,6 +208,22 @@ draw(void) } +static void +idle(void) +{ + static double t0 = -1.; + double dt, t = eglutGet(EGLUT_ELAPSED_TIME) / 1000.0; + if (t0 < 0.0) + t0 = t; + dt = t - t0; + t0 = t; + + angle += 70.0 * dt; /* 70 degrees per second */ + angle = fmod(angle, 360.0); /* prevents eventual overflow */ + + eglutPostRedisplay(); +} + /* new window size or exposure */ static void reshape(int width, int height) @@ -325,158 +279,23 @@ init(void) glEnable(GL_NORMALIZE); } - - - -static void run_gears(EGLDisplay dpy, EGLSurface surf, int ttr) -{ - double st = current_time(); - double ct = st; - int frames = 0; - GLfloat seconds, fps; - - while (ct - st < ttr) - { - double tt = current_time(); - double dt = tt - ct; - ct = tt; - - /* advance rotation for next frame */ - angle += 70.0 * dt; /* 70 degrees per second */ - if (angle > 3600.0) - angle -= 3600.0; - - draw(); - - eglSwapBuffers(dpy, surf); - - - frames++; - } - - seconds = ct - st; - fps = frames / seconds; - printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds, fps); - -} - - int main(int argc, char *argv[]) { - int maj, min; - EGLContext ctx; - EGLSurface screen_surf; - EGLConfig configs[MAX_CONFIGS]; - EGLint numConfigs, i; - EGLBoolean b; - EGLDisplay d; - EGLint screenAttribs[10]; - EGLModeMESA mode[MAX_MODES]; - EGLScreenMESA screen; - EGLint count; - EGLint chosenMode = 0; - GLboolean printInfo = GL_FALSE; - EGLint width = 0, height = 0; - - /* parse cmd line args */ - for (i = 1; i < argc; i++) - { - if (strcmp(argv[i], "-info") == 0) - { - printInfo = GL_TRUE; - } - else - printf("Warning: unknown parameter: %s\n", argv[i]); - } - - /* DBR : Create EGL context/surface etc */ - d = eglGetDisplay(EGL_DEFAULT_DISPLAY); - assert(d); - - if (!eglInitialize(d, &maj, &min)) { - printf("eglgears: eglInitialize failed\n"); - exit(1); - } - - printf("eglgears: EGL version = %d.%d\n", maj, min); - printf("eglgears: EGL_VENDOR = %s\n", eglQueryString(d, EGL_VENDOR)); - - /* XXX use ChooseConfig */ - eglGetConfigs(d, configs, MAX_CONFIGS, &numConfigs); - eglGetScreensMESA(d, &screen, 1, &count); - - if (!eglGetModesMESA(d, screen, mode, MAX_MODES, &count) || count == 0) { - printf("eglgears: eglGetModesMESA failed!\n"); - return 0; - } - - /* Print list of modes, and find the one to use */ - printf("eglgears: Found %d modes:\n", count); - for (i = 0; i < count; i++) { - EGLint w, h; - eglGetModeAttribMESA(d, mode[i], EGL_WIDTH, &w); - eglGetModeAttribMESA(d, mode[i], EGL_HEIGHT, &h); - printf("%3d: %d x %d\n", i, w, h); - if (w > width && h > height) { - width = w; - height = h; - chosenMode = i; - } - } - printf("eglgears: Using screen mode/size %d: %d x %d\n", chosenMode, width, height); - - eglBindAPI(EGL_OPENGL_API); - ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL); - if (ctx == EGL_NO_CONTEXT) { - printf("eglgears: failed to create context\n"); - return 0; - } - - /* build up screenAttribs array */ - i = 0; - screenAttribs[i++] = EGL_WIDTH; - screenAttribs[i++] = width; - screenAttribs[i++] = EGL_HEIGHT; - screenAttribs[i++] = height; - screenAttribs[i++] = EGL_NONE; - - screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs); - if (screen_surf == EGL_NO_SURFACE) { - printf("eglgears: failed to create screen surface\n"); - return 0; - } - - b = eglShowScreenSurfaceMESA(d, screen, screen_surf, mode[chosenMode]); - if (!b) { - printf("eglgears: show surface failed\n"); - return 0; - } - - b = eglMakeCurrent(d, screen_surf, screen_surf, ctx); - if (!b) { - printf("eglgears: make current failed\n"); - return 0; - } - - if (printInfo) - { - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); - printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); - printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS)); - } - - init(); - reshape(width, height); + eglutInitWindowSize(300, 300); + eglutInitAPIMask(EGLUT_OPENGL_BIT); + eglutInit(argc, argv); - glDrawBuffer( GL_BACK ); + eglutCreateWindow("eglgears"); - run_gears(d, screen_surf, 5.0); - - eglDestroySurface(d, screen_surf); - eglDestroyContext(d, ctx); - eglTerminate(d); + eglutIdleFunc(idle); + eglutReshapeFunc(reshape); + eglutDisplayFunc(draw); + + init(); + glDrawBuffer(GL_BACK); - return 0; + eglutMainLoop(); + + return 0; } |