265 lines
6.3 KiB
C
265 lines
6.3 KiB
C
/*
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* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
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* Copyright (C) 2008 Brian Paul All Rights Reserved.
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* Copyright (C) 2008 Jakob Bornecrantz All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* This program is based on eglgears and xegl_tri.
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* Remixed by Jakob Bornecrantz
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*
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* No command line options.
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* Program runs for 5 seconds then exits, outputing framerate to console
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*/
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#define EGL_EGLEXT_PROTOTYPES
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#include <assert.h>
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#include <math.h>
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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 <GL/gl.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#define MAX_CONFIGS 10
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#define MAX_MODES 100
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/* XXX this probably isn't very portable */
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#include <sys/time.h>
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#include <unistd.h>
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/* return current time (in seconds) */
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static double
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current_time(void)
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{
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struct timeval tv;
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#ifdef __VMS
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(void) gettimeofday(&tv, NULL );
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#else
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struct timezone tz;
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(void) gettimeofday(&tv, &tz);
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#endif
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return (double) tv.tv_sec + tv.tv_usec / 1000000.0;
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}
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static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
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static void draw()
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{
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static const GLfloat verts[3][2] = {
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{ -1, -1 },
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{ 1, -1 },
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{ 0, 1 }
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};
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static const GLfloat colors[3][3] = {
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{ 1, 0, 0 },
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{ 0, 1, 0 },
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{ 0, 0, 1 }
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};
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glPushMatrix();
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glRotatef(view_rotx, 1, 0, 0);
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glRotatef(view_roty, 0, 1, 0);
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glRotatef(view_rotz, 0, 0, 1);
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{
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glVertexPointer(2, GL_FLOAT, 0, verts);
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glColorPointer(3, GL_FLOAT, 0, colors);
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_COLOR_ARRAY);
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glDrawArrays(GL_TRIANGLES, 0, 3);
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glDisableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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}
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glPopMatrix();
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}
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static void init()
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{
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glClearColor(0.4, 0.4, 0.4, 0.0);
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}
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/* new window size or exposure */
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static void reshape(int width, int height)
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{
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GLfloat ar = (GLfloat) width / (GLfloat) height;
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glViewport(0, 0, (GLint) width, (GLint) height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslatef(0.0, 0.0, -10.0);
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}
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static void run(EGLDisplay dpy, EGLSurface surf, int ttr)
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{
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double st = current_time();
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double ct = st;
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int frames = 0;
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GLfloat seconds, fps;
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while (ct - st < ttr)
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{
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ct = current_time();
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draw();
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eglSwapBuffers(dpy, surf);
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frames++;
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}
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seconds = ct - st;
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fps = frames / seconds;
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printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds, fps);
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}
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int main(int argc, char *argv[])
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{
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int maj, min;
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EGLContext ctx;
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EGLSurface screen_surf;
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EGLConfig configs[MAX_CONFIGS];
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EGLint numConfigs, i;
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EGLBoolean b;
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EGLDisplay d;
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EGLint screenAttribs[10];
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EGLModeMESA mode[MAX_MODES];
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EGLScreenMESA screen;
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EGLint count, chosenMode = 0;
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GLboolean printInfo = GL_FALSE;
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EGLint width = 0, height = 0;
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/* parse cmd line args */
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for (i = 1; i < argc; i++)
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{
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if (strcmp(argv[i], "-info") == 0)
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{
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printInfo = GL_TRUE;
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}
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else
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printf("Warning: unknown parameter: %s\n", argv[i]);
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}
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/* DBR : Create EGL context/surface etc */
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d = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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assert(d);
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if (!eglInitialize(d, &maj, &min)) {
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printf("egltri: eglInitialize failed\n");
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exit(1);
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}
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printf("egltri: EGL version = %d.%d\n", maj, min);
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printf("egltri: EGL_VENDOR = %s\n", eglQueryString(d, EGL_VENDOR));
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/* XXX use ChooseConfig */
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eglGetConfigs(d, configs, MAX_CONFIGS, &numConfigs);
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eglGetScreensMESA(d, &screen, 1, &count);
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if (!eglGetModesMESA(d, screen, mode, MAX_MODES, &count) || count == 0) {
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printf("egltri: eglGetModesMESA failed!\n");
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return 0;
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}
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/* Print list of modes, and find the one to use */
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printf("egltri: Found %d modes:\n", count);
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for (i = 0; i < count; i++) {
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EGLint w, h;
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eglGetModeAttribMESA(d, mode[i], EGL_WIDTH, &w);
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eglGetModeAttribMESA(d, mode[i], EGL_HEIGHT, &h);
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printf("%3d: %d x %d\n", i, w, h);
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if (w > width && h > height) {
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width = w;
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height = h;
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chosenMode = i;
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}
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}
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printf("egltri: Using screen mode/size %d: %d x %d\n", chosenMode, width, height);
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eglBindAPI(EGL_OPENGL_API);
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ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
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if (ctx == EGL_NO_CONTEXT) {
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printf("egltri: failed to create context\n");
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return 0;
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}
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/* build up screenAttribs array */
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i = 0;
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screenAttribs[i++] = EGL_WIDTH;
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screenAttribs[i++] = width;
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screenAttribs[i++] = EGL_HEIGHT;
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screenAttribs[i++] = height;
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screenAttribs[i++] = EGL_NONE;
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screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs);
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if (screen_surf == EGL_NO_SURFACE) {
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printf("egltri: failed to create screen surface\n");
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return 0;
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}
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b = eglShowScreenSurfaceMESA(d, screen, screen_surf, mode[chosenMode]);
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if (!b) {
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printf("egltri: show surface failed\n");
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return 0;
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}
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b = eglMakeCurrent(d, screen_surf, screen_surf, ctx);
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if (!b) {
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printf("egltri: make current failed\n");
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return 0;
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}
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if (printInfo)
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{
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printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
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printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
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printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
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printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
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}
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init();
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reshape(width, height);
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glDrawBuffer( GL_BACK );
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run(d, screen_surf, 5.0);
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eglDestroySurface(d, screen_surf);
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eglDestroyContext(d, ctx);
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eglTerminate(d);
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return 0;
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}
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