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Add the gears from glxgears.

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Kristian Høgsberg 16 years ago
parent 33a52bd07d
commit 8a9cda8cfb
4 changed files with 298 additions and 9 deletions
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  1. 12
      Makefile
  2. 207
      gears.c
  3. 10
      gears.h
  4. 78
      window.c

12
Makefile
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@ -1,13 +1,16 @@
CFLAGS += -Wall -g $(shell pkg-config --cflags libffi libdrm)
LDLIBS += $(shell pkg-config --libs libffi libdrm)
EAGLE_CFLAGS = -I../eagle
EAGLE_LDLIBS = -L../eagle -leagle
clients = flower pointer background window
all : wayland $(clients)
wayland_objs = wayland.o event-loop.o connection.o hash.o input.o egl-compositor.o
wayland : CFLAGS += -I../eagle
wayland : LDLIBS += -L../eagle -leagle -ldl
wayland : CFLAGS += $(EAGLE_CFLAGS)
wayland : LDLIBS += $(EAGLE_LDLIBS)
wayland : $(wayland_objs)
gcc -o $@ $(LDLIBS) $(wayland_objs)
@ -20,7 +23,7 @@ libwayland.so : $(libwayland_objs)
flower_objs = flower.o
pointer_objs = pointer.o
background_objs = background.o
window_objs = window.o
window_objs = window.o gears.o
$(clients) : CFLAGS += $(shell pkg-config --cflags cairo)
$(clients) : LDLIBS += $(shell pkg-config --libs cairo gdk-pixbuf-2.0) -lrt
@ -28,6 +31,9 @@ $(clients) : LDLIBS += $(shell pkg-config --libs cairo gdk-pixbuf-2.0) -lrt
background : CFLAGS += $(shell pkg-config --cflags gdk-pixbuf-2.0)
background : LDLIBS += $(shell pkg-config --libs gdk-pixbuf-2.0)
window : CFLAGS += $(EAGLE_CFLAGS)
window : LDLIBS += $(EAGLE_LDLIBS)
define client_template
$(1): $$($(1)_objs) libwayland.so
endef

207
gears.c
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@ -0,0 +1,207 @@
#include <stdlib.h>
#include <math.h>
#include <GL/gl.h>
#include "gears.h"
struct gears {
GLint gear1, gear2, gear3;
};
static void
gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
GLint teeth, GLfloat tooth_depth)
{
GLint i;
GLfloat r0, r1, r2;
GLfloat angle, da;
GLfloat u, v, len;
r0 = inner_radius;
r1 = outer_radius - tooth_depth / 2.0;
r2 = outer_radius + tooth_depth / 2.0;
da = 2.0 * M_PI / teeth / 4.0;
glShadeModel(GL_FLAT);
glNormal3f(0.0, 0.0, 1.0);
/* draw front face */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.0 * M_PI / teeth;
glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
if (i < teeth) {
glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5);
}
}
glEnd();
/* draw front sides of teeth */
glBegin(GL_QUADS);
da = 2.0 * M_PI / teeth / 4.0;
for (i = 0; i < teeth; i++) {
angle = i * 2.0 * M_PI / teeth;
glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), width * 0.5);
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5);
}
glEnd();
glNormal3f(0.0, 0.0, -1.0);
/* draw back face */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.0 * M_PI / teeth;
glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
if (i < teeth) {
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5);
glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
}
}
glEnd();
/* draw back sides of teeth */
glBegin(GL_QUADS);
da = 2.0 * M_PI / teeth / 4.0;
for (i = 0; i < teeth; i++) {
angle = i * 2.0 * M_PI / teeth;
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5);
glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), -width * 0.5);
glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
}
glEnd();
/* draw outward faces of teeth */
glBegin(GL_QUAD_STRIP);
for (i = 0; i < teeth; i++) {
angle = i * 2.0 * M_PI / teeth;
glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
u = r2 * cos(angle + da) - r1 * cos(angle);
v = r2 * sin(angle + da) - r1 * sin(angle);
len = sqrt(u * u + v * v);
u /= len;
v /= len;
glNormal3f(v, -u, 0.0);
glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
glNormal3f(cos(angle), sin(angle), 0.0);
glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), width * 0.5);
glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da), -width * 0.5);
u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da);
v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da);
glNormal3f(v, -u, 0.0);
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), width * 0.5);
glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da), -width * 0.5);
glNormal3f(cos(angle), sin(angle), 0.0);
}
glVertex3f(r1 * cos(0), r1 * sin(0), width * 0.5);
glVertex3f(r1 * cos(0), r1 * sin(0), -width * 0.5);
glEnd();
glShadeModel(GL_SMOOTH);
/* draw inside radius cylinder */
glBegin(GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++) {
angle = i * 2.0 * M_PI / teeth;
glNormal3f(-cos(angle), -sin(angle), 0.0);
glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
}
glEnd();
}
struct gears *
gears_create(void)
{
static GLfloat red[4] = {0.8, 0.1, 0.0, 1.0};
static GLfloat green[4] = {0.0, 0.8, 0.2, 1.0};
static GLfloat blue[4] = {0.2, 0.2, 1.0, 1.0};
static GLfloat pos[4] = {5.0, 5.0, 10.0, 0.0};
struct gears *gears;
gears = malloc(sizeof *gears);
/* make the gears */
gears->gear1 = glGenLists(1);
glNewList(gears->gear1, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
gear(1.0, 4.0, 1.0, 20, 0.7);
glEndList();
gears->gear2 = glGenLists(1);
glNewList(gears->gear2, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
gear(0.5, 2.0, 2.0, 10, 0.7);
glEndList();
gears->gear3 = glGenLists(1);
glNewList(gears->gear3, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
gear(1.3, 2.0, 0.5, 10, 0.7);
glEndList();
glEnable(GL_NORMALIZE);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 200.0);
glMatrixMode(GL_MODELVIEW);
glLightfv(GL_LIGHT0, GL_POSITION, pos);
glEnable(GL_CULL_FACE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_DEPTH_TEST);
return gears;
}
void
gears_draw(struct gears *gears, GLfloat angle)
{
GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
glPushMatrix();
glTranslatef(0.0, 0.0, -50);
glRotatef(view_rotx, 1.0, 0.0, 0.0);
glRotatef(view_roty, 0.0, 1.0, 0.0);
glRotatef(view_rotz, 0.0, 0.0, 1.0);
glPushMatrix();
glTranslatef(-3.0, -2.0, 0.0);
glRotatef(angle, 0.0, 0.0, 1.0);
glCallList(gears->gear1);
glPopMatrix();
glPushMatrix();
glTranslatef(3.1, -2.0, 0.0);
glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
glCallList(gears->gear2);
glPopMatrix();
glPushMatrix();
glTranslatef(-3.1, 4.2, 0.0);
glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
glCallList(gears->gear3);
glPopMatrix();
glPopMatrix();
glFlush();
}

10
gears.h
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@ -0,0 +1,10 @@
#ifndef _GEARS_H_
#define _GEARS_H_
struct gears;
struct gears *gears_create(void);
void gears_draw(struct gears *gears, GLfloat angle);
#endif

78
window.c
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@ -11,11 +11,21 @@
#include <time.h>
#include <cairo.h>
#include <GL/gl.h>
#include <eagle.h>
#include "wayland-client.h"
#include "gears.h"
static const char gem_device[] = "/dev/dri/card0";
static const char socket_name[] = "\0wayland";
static void die(const char *msg)
{
fprintf(stderr, "%s", msg);
exit(EXIT_FAILURE);
}
static uint32_t name_cairo_surface(int fd, cairo_surface_t *surface)
{
struct drm_i915_gem_create create;
@ -75,6 +85,11 @@ struct window {
uint32_t name;
int fd;
int need_redraw;
EGLDisplay display;
EGLContext context;
EGLConfig config;
EGLSurface egl_surface;
};
static void *
@ -82,7 +97,7 @@ draw_window(struct window *window)
{
cairo_surface_t *surface;
cairo_t *cr;
int border = 2, radius = 5;
int border = 2, radius = 5, h;
int margin = (border + 1) / 2;
cairo_text_extents_t extents;
const static char title[] = "Wayland First Post";
@ -108,8 +123,9 @@ draw_window(struct window *window)
cairo_set_source_rgba(cr, 0, 0, 0, 1);
cairo_set_font_size(cr, 14);
cairo_text_extents(cr, title, &extents);
cairo_move_to(cr, margin, margin + radius + extents.height + 10);
cairo_line_to(cr, margin + window->width, margin + radius + extents.height + 10);
h = margin + radius + extents.height + 10;
cairo_move_to(cr, margin, h);
cairo_line_to(cr, margin + window->width, h);
cairo_stroke(cr);
cairo_move_to(cr, (window->width - extents.width) / 2, 10 - extents.y_bearing);
@ -129,6 +145,24 @@ draw_window(struct window *window)
window->x, window->y,
window->width, window->height);
if (window->egl_surface != EGL_NO_SURFACE)
eglDestroySurface(window->display, window->egl_surface);
/* FIXME: We need to get the stride right here in a chipset
* independent way. Maybe do it in name_cairo_surface(). */
window->egl_surface = eglCreatePixmapForName(window->display,
window->config, window->name,
window->width, window->height,
window->stride, NULL);
if (surface == NULL)
die("failed to create surface\n");
if (!eglMakeCurrent(window->display,
window->egl_surface, window->egl_surface, window->context))
die("failed to make context current\n");
glViewport(border, window->height - h - margin - 300, 300, 300);
return surface;
}
@ -226,6 +260,30 @@ void event_handler(struct wl_display *display,
}
}
static void
init_egl(struct window *window)
{
EGLint major, minor, count;
EGLConfig configs[64];
window->display = eglCreateDisplayNative("/dev/dri/card0", "i965");
if (window->display == NULL)
die("failed to create display\n");
if (!eglInitialize(window->display, &major, &minor))
die("failed to initialize display\n");
if (!eglGetConfigs(window->display, configs, 64, &count))
die("failed to get configs\n");
window->config = configs[24];
window->context = eglCreateContext(window->display, window->config, NULL, NULL);
if (window->context == NULL)
die("failed to create context\n");
window->egl_surface = EGL_NO_SURFACE;
}
int main(int argc, char *argv[])
{
struct wl_display *display;
@ -234,6 +292,8 @@ int main(int argc, char *argv[])
cairo_surface_t *s;
struct pollfd p[1];
struct window window;
struct gears *gears;
GLfloat angle = 0.0;
fd = open(gem_device, O_RDWR);
if (fd < 0) {
@ -252,17 +312,23 @@ int main(int argc, char *argv[])
window.surface = wl_display_create_surface(display);
window.x = 200;
window.y = 200;
window.width = 350;
window.height = 200;
window.width = 450;
window.height = 500;
window.state = WINDOW_STABLE;
window.fd = fd;
init_egl(&window);
s = draw_window(&window);
wl_display_set_event_handler(display, event_handler, &window);
while (ret = poll(p, 1, -1), ret >= 0) {
gears = gears_create();
while (ret = poll(p, 1, 20), ret >= 0) {
mask = 0;
gears_draw(gears, angle);
angle += 1;
if (p[0].revents & POLLIN)
mask |= WL_CONNECTION_READABLE;
if (p[0].revents & POLLOUT)

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