mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
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egl: new version of gears demo that uses Xlib+EGL (and full OpenGL for now)
This commit is contained in:
Brian Paul
parent
750782a327
commit
80ed996803
2 changed files with 613 additions and 1 deletions
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@ -13,7 +13,8 @@ PROGRAMS = \
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demo2 \
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demo3 \
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eglinfo \
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eglgears
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eglgears \
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xeglgears
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.c.o:
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@ -59,6 +60,13 @@ eglgears.o: eglgears.c $(HEADERS)
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$(CC) -c $(CFLAGS) -I$(TOP)/include eglgears.c
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xeglgears: xeglgears.o $(TOP)/$(LIB_DIR)/libEGL.so
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$(CC) $(CFLAGS) xeglgears.o -L$(TOP)/$(LIB_DIR) -lEGL $(LIBDRM_LIB) $(APP_LIB_DEPS) -o $@
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xeglgears.o: xeglgears.c $(HEADERS)
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$(CC) -c $(CFLAGS) -I$(TOP)/include xeglgears.c
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clean:
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rm -f *.o *~
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rm -f *.so
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604
progs/egl/xeglgears.c
Normal file
604
progs/egl/xeglgears.c
Normal file
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@ -0,0 +1,604 @@
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/*
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* Copyright (C) 1999-2001 Brian Paul 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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* Ported to X/EGL/GLES. XXX Actually, uses full OpenGL ATM.
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* Brian Paul
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* 30 May 2008
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*/
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/*
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* Command line options:
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* -info print GL implementation information
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*
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*/
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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 <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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#include <GL/gl.h>
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#include <GLES/egl.h>
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#define BENCHMARK
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#ifdef BENCHMARK
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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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#else /*BENCHMARK*/
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/* dummy */
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static double
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current_time(void)
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{
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/* update this function for other platforms! */
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static double t = 0.0;
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static int warn = 1;
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if (warn) {
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fprintf(stderr, "Warning: current_time() not implemented!!\n");
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warn = 0;
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}
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return t += 1.0;
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}
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#endif /*BENCHMARK*/
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#ifndef M_PI
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#define M_PI 3.14159265
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#endif
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static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
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static GLint gear1, gear2, gear3;
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static GLfloat angle = 0.0;
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static GLboolean fullscreen = GL_FALSE; /* Create a single fullscreen window */
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/*
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*
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* Draw a gear wheel. You'll probably want to call this function when
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* building a display list since we do a lot of trig here.
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*
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* Input: inner_radius - radius of hole at center
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* outer_radius - radius at center of teeth
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* width - width of gear
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* teeth - number of teeth
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* tooth_depth - depth of tooth
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*/
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static void
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gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
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GLint teeth, GLfloat tooth_depth)
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{
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GLint i;
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GLfloat r0, r1, r2;
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GLfloat angle, da;
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GLfloat u, v, len;
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r0 = inner_radius;
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r1 = outer_radius - tooth_depth / 2.0;
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r2 = outer_radius + tooth_depth / 2.0;
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da = 2.0 * M_PI / teeth / 4.0;
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glShadeModel(GL_FLAT);
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glNormal3f(0.0, 0.0, 1.0);
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/* draw front face */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
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glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
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if (i < teeth) {
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glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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width * 0.5);
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}
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}
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glEnd();
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/* draw front sides of teeth */
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glBegin(GL_QUADS);
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da = 2.0 * M_PI / teeth / 4.0;
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for (i = 0; i < teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
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glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
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glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
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width * 0.5);
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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width * 0.5);
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}
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glEnd();
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glNormal3f(0.0, 0.0, -1.0);
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/* draw back face */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
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glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
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if (i < teeth) {
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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-width * 0.5);
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glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
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}
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}
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glEnd();
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/* draw back sides of teeth */
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glBegin(GL_QUADS);
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da = 2.0 * M_PI / teeth / 4.0;
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for (i = 0; i < teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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-width * 0.5);
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glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
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-width * 0.5);
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glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
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glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
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}
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glEnd();
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/* draw outward faces of teeth */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i < teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
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glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
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u = r2 * cos(angle + da) - r1 * cos(angle);
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v = r2 * sin(angle + da) - r1 * sin(angle);
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len = sqrt(u * u + v * v);
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u /= len;
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v /= len;
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glNormal3f(v, -u, 0.0);
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glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
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glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
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glNormal3f(cos(angle), sin(angle), 0.0);
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glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
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width * 0.5);
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glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
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-width * 0.5);
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u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da);
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v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da);
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glNormal3f(v, -u, 0.0);
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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width * 0.5);
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glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
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-width * 0.5);
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glNormal3f(cos(angle), sin(angle), 0.0);
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}
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glVertex3f(r1 * cos(0), r1 * sin(0), width * 0.5);
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glVertex3f(r1 * cos(0), r1 * sin(0), -width * 0.5);
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glEnd();
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glShadeModel(GL_SMOOTH);
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/* draw inside radius cylinder */
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glBegin(GL_QUAD_STRIP);
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for (i = 0; i <= teeth; i++) {
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angle = i * 2.0 * M_PI / teeth;
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glNormal3f(-cos(angle), -sin(angle), 0.0);
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glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
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glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
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}
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glEnd();
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}
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static void
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draw(void)
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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, 0.0, 0.0);
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glRotatef(view_roty, 0.0, 1.0, 0.0);
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glRotatef(view_rotz, 0.0, 0.0, 1.0);
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glPushMatrix();
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glTranslatef(-3.0, -2.0, 0.0);
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glRotatef(angle, 0.0, 0.0, 1.0);
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glCallList(gear1);
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glPopMatrix();
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glPushMatrix();
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glTranslatef(3.1, -2.0, 0.0);
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glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
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glCallList(gear2);
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glPopMatrix();
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glPushMatrix();
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glTranslatef(-3.1, 4.2, 0.0);
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glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
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glCallList(gear3);
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glPopMatrix();
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glPopMatrix();
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}
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/* new window size or exposure */
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static void
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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, -40.0);
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}
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static void
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init(void)
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{
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static GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 };
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static GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 };
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static GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
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static GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 };
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glLightfv(GL_LIGHT0, GL_POSITION, pos);
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glEnable(GL_CULL_FACE);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glEnable(GL_DEPTH_TEST);
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/* make the gears */
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gear1 = glGenLists(1);
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glNewList(gear1, GL_COMPILE);
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
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gear(1.0, 4.0, 1.0, 20, 0.7);
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glEndList();
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gear2 = glGenLists(1);
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glNewList(gear2, GL_COMPILE);
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
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gear(0.5, 2.0, 2.0, 10, 0.7);
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glEndList();
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gear3 = glGenLists(1);
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glNewList(gear3, GL_COMPILE);
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glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
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gear(1.3, 2.0, 0.5, 10, 0.7);
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glEndList();
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glEnable(GL_NORMALIZE);
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glClearColor(0.2, 0.2, 0.2, 0.0);
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}
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/*
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* Create an RGB, double-buffered X window.
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* Return the window and context handles.
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*/
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static void
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make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
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const char *name,
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int x, int y, int width, int height,
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Window *winRet,
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EGLContext *ctxRet,
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EGLSurface *surfRet)
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{
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static const EGLint attribs[] = {
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EGL_RED_SIZE, 1,
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EGL_GREEN_SIZE, 1,
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EGL_BLUE_SIZE, 1,
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/*EGL_DOUBLEBUFFER,*/
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EGL_DEPTH_SIZE, 1,
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EGL_NONE
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};
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int scrnum;
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XSetWindowAttributes attr;
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unsigned long mask;
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Window root;
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Window win;
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XVisualInfo *visInfo, visTemplate;
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int num_visuals;
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EGLContext ctx;
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EGLConfig config;
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EGLint num_configs;
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scrnum = DefaultScreen( x_dpy );
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root = RootWindow( x_dpy, scrnum );
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if (fullscreen) {
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x = 0; y = 0;
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width = DisplayWidth( x_dpy, scrnum );
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height = DisplayHeight( x_dpy, scrnum );
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}
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if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
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printf("Error: couldn't get an EGL visual config\n");
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exit(1);
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}
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/* choose X window visual similar to EGL config */
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visTemplate.screen = DefaultScreen(x_dpy);
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visTemplate.depth = 32; /* 24? */
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visInfo = XGetVisualInfo(x_dpy,
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(VisualDepthMask | VisualScreenMask),
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&visTemplate, &num_visuals);
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if (!visInfo) {
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printf("Error: couldn't get X visual\n");
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exit(1);
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}
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/* window attributes */
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attr.background_pixel = 0;
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attr.border_pixel = 0;
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attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
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attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
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attr.override_redirect = fullscreen;
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mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask | CWOverrideRedirect;
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win = XCreateWindow( x_dpy, root, 0, 0, width, height,
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0, visInfo->depth, InputOutput,
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visInfo->visual, mask, &attr );
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/* set hints and properties */
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{
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XSizeHints sizehints;
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sizehints.x = x;
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sizehints.y = y;
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sizehints.width = width;
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sizehints.height = height;
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sizehints.flags = USSize | USPosition;
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XSetNormalHints(x_dpy, win, &sizehints);
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XSetStandardProperties(x_dpy, win, name, name,
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None, (char **)NULL, 0, &sizehints);
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}
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ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
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if (!ctx) {
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printf("Error: glXCreateContext failed\n");
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exit(1);
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}
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*surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
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XFree(visInfo);
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*winRet = win;
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*ctxRet = ctx;
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}
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static void
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event_loop(Display *dpy, Window win,
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EGLDisplay egl_dpy, EGLSurface egl_surf)
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{
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while (1) {
|
||||
while (XPending(dpy) > 0) {
|
||||
XEvent event;
|
||||
XNextEvent(dpy, &event);
|
||||
switch (event.type) {
|
||||
case Expose:
|
||||
/* we'll redraw below */
|
||||
break;
|
||||
case ConfigureNotify:
|
||||
reshape(event.xconfigure.width, event.xconfigure.height);
|
||||
break;
|
||||
case KeyPress:
|
||||
{
|
||||
char buffer[10];
|
||||
int r, code;
|
||||
code = XLookupKeysym(&event.xkey, 0);
|
||||
if (code == XK_Left) {
|
||||
view_roty += 5.0;
|
||||
}
|
||||
else if (code == XK_Right) {
|
||||
view_roty -= 5.0;
|
||||
}
|
||||
else if (code == XK_Up) {
|
||||
view_rotx += 5.0;
|
||||
}
|
||||
else if (code == XK_Down) {
|
||||
view_rotx -= 5.0;
|
||||
}
|
||||
else {
|
||||
r = XLookupString(&event.xkey, buffer, sizeof(buffer),
|
||||
NULL, NULL);
|
||||
if (buffer[0] == 27) {
|
||||
/* escape */
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
{
|
||||
static int frames = 0;
|
||||
static double tRot0 = -1.0, tRate0 = -1.0;
|
||||
double dt, t = current_time();
|
||||
if (tRot0 < 0.0)
|
||||
tRot0 = t;
|
||||
dt = t - tRot0;
|
||||
tRot0 = t;
|
||||
|
||||
/* advance rotation for next frame */
|
||||
angle += 70.0 * dt; /* 70 degrees per second */
|
||||
if (angle > 3600.0)
|
||||
angle -= 3600.0;
|
||||
|
||||
draw();
|
||||
eglSwapBuffers(egl_dpy, egl_surf);
|
||||
|
||||
frames++;
|
||||
|
||||
if (tRate0 < 0.0)
|
||||
tRate0 = t;
|
||||
if (t - tRate0 >= 5.0) {
|
||||
GLfloat seconds = t - tRate0;
|
||||
GLfloat fps = frames / seconds;
|
||||
printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds,
|
||||
fps);
|
||||
tRate0 = t;
|
||||
frames = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
printf("Usage:\n");
|
||||
printf(" -display <displayname> set the display to run on\n");
|
||||
printf(" -fullscreen run in fullscreen mode\n");
|
||||
printf(" -info display OpenGL renderer info\n");
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
const int winWidth = 300, winHeight = 300;
|
||||
Display *x_dpy;
|
||||
Window win;
|
||||
EGLSurface egl_surf;
|
||||
EGLContext egl_ctx;
|
||||
EGLDisplay egl_dpy;
|
||||
char *dpyName = NULL;
|
||||
GLboolean printInfo = GL_FALSE;
|
||||
EGLint egl_major, egl_minor;
|
||||
int i;
|
||||
const char *s;
|
||||
|
||||
for (i = 1; i < argc; i++) {
|
||||
if (strcmp(argv[i], "-display") == 0) {
|
||||
dpyName = argv[i+1];
|
||||
i++;
|
||||
}
|
||||
else if (strcmp(argv[i], "-info") == 0) {
|
||||
printInfo = GL_TRUE;
|
||||
}
|
||||
else if (strcmp(argv[i], "-fullscreen") == 0) {
|
||||
fullscreen = GL_TRUE;
|
||||
}
|
||||
else {
|
||||
usage();
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
x_dpy = XOpenDisplay(dpyName);
|
||||
if (!x_dpy) {
|
||||
printf("Error: couldn't open display %s\n",
|
||||
dpyName ? dpyName : getenv("DISPLAY"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
egl_dpy = eglGetDisplay(x_dpy);
|
||||
if (!egl_dpy) {
|
||||
printf("Error: eglGetDisplay() failed\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
|
||||
printf("Error: eglInitialize() failed\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
s = eglQueryString(egl_dpy, EGL_VERSION);
|
||||
printf("EGL_VERSION = %s\n", s);
|
||||
|
||||
make_x_window(x_dpy, egl_dpy,
|
||||
"glxgears", 0, 0, winWidth, winHeight,
|
||||
&win, &egl_ctx, &egl_surf);
|
||||
|
||||
XMapWindow(x_dpy, win);
|
||||
eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx);
|
||||
|
||||
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));
|
||||
}
|
||||
|
||||
init();
|
||||
|
||||
/* Set initial projection/viewing transformation.
|
||||
* We can't be sure we'll get a ConfigureNotify event when the window
|
||||
* first appears.
|
||||
*/
|
||||
reshape(winWidth, winHeight);
|
||||
|
||||
event_loop(x_dpy, win, egl_dpy, egl_surf);
|
||||
|
||||
glDeleteLists(gear1, 1);
|
||||
glDeleteLists(gear2, 1);
|
||||
glDeleteLists(gear3, 1);
|
||||
|
||||
eglDestroyContext(egl_dpy, egl_ctx);
|
||||
eglDestroySurface(egl_dpy, egl_surf);
|
||||
eglTerminate(egl_dpy);
|
||||
|
||||
|
||||
XDestroyWindow(x_dpy, win);
|
||||
XCloseDisplay(x_dpy);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue