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#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <GL/gl.h>
#include "../eagle.h"
#include <sys/time.h>
#include <drm_mode.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <sys/ioctl.h>
#include <i915_drm.h>
#include <string.h>
#include "setup.h"
#define ARRAY_SIZE(a) (sizeof (a) / sizeof (a)[0])
void die(const char *msg)
{
fprintf(stderr, "%s", msg);
exit(EXIT_FAILURE);
}
static const EGLint config_attribs[] = {
EGL_DEPTH_SIZE, 24,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_BUFFER_SIZE, 32,
EGL_CONFIG_CAVEAT, EGL_NONE,
EGL_NONE
};
static void run_dri2(int x, int y, int width, int height, init_func_t init, render_func_t render)
{
EGLint major, minor;
Display *x11_display;
Window root, window;
XSetWindowAttributes attributes;
XSizeHints sizehints;
int screen;
unsigned long mask;
struct state state;
static const char name[] = "eglgears";
x11_display = XOpenDisplay(NULL);
if (x11_display == NULL)
return;
screen = DefaultScreen(x11_display);
root = RootWindow(x11_display, screen);
state.width = width;
state.height = height;
state.display = eglCreateDisplayX11(x11_display, root);
if (state.display == NULL)
die("failed to create display\n");
attributes.event_mask =
StructureNotifyMask | ExposureMask | KeyPressMask;
mask = CWEventMask;
window = XCreateWindow(x11_display, root, x, y, width, height,
0, DefaultDepth(x11_display, screen),
InputOutput,
DefaultVisual(x11_display, screen),
mask, &attributes);
sizehints.x = x;
sizehints.y = y;
sizehints.width = width;
sizehints.height = height;
sizehints.flags = USSize | USPosition;
XSetNormalHints(x11_display, window, &sizehints);
XSetStandardProperties(x11_display, window, name, name,
None, (char **)NULL, 0, &sizehints);
XMapWindow(x11_display, window);
if (!eglInitialize(state.display, &major, &minor))
die("failed to initialize display\n");
if (!eglChooseConfig(state.display, config_attribs, &state.config, 1, NULL))
die("failed to pick a config\n");
state.surface = eglCreateSurfaceX11(state.display, state.config, window, width, height);
if (state.surface == NULL)
die("failed to create surface\n");
state.context = eglCreateContext(state.display, state.config, NULL, NULL);
if (state.context == NULL)
die("failed to create context\n");
if (!eglMakeCurrent(state.display, state.surface, state.surface, state.context))
die("failed to make context current\n");
init(&state);
render(&state);
eglTerminate(state.display);
}
static void
page_flip_handler(int fd, unsigned int frame,
unsigned int sec, unsigned int usec, void *data)
{
int *done = data;
*done = 1;
}
static void run_native(int x, int y, int width, int height, init_func_t init, render_func_t render)
{
EGLint major, minor;
struct udev *udev;
struct udev_device *device;
struct state state;
drmModeConnector *connector;
drmModeRes *resources;
drmModeEncoder *encoder;
drmModeModeInfo *mode;
int i, ret, fd, done;
drmEventContext evctx;
struct buffer {
unsigned int fb_id;
uint32_t name, handle, stride;
} b[2];
udev = udev_new();
device = udev_device_new_from_syspath(udev, "/sys/class/drm/card0");
state.width = width;
state.height = height;
state.display = eglCreateDisplayNative(device);
if (state.display == NULL)
die("failed to create display\n");
if (!eglInitialize(state.display, &major, &minor))
die("failed to initialize display\n");
if (!eglChooseConfig(state.display, config_attribs, &state.config, 1, NULL))
die("failed to pick a config\n");
fd = eglGetDisplayFD(state.display);
resources = drmModeGetResources(fd);
if (!resources) {
fprintf(stderr, "drmModeGetResources failed\n");
return;
}
for (i = 0; i < resources->count_connectors; i++) {
connector = drmModeGetConnector(fd, resources->connectors[i]);
if (connector == NULL)
continue;
if (connector->connection == DRM_MODE_CONNECTED &&
connector->count_modes > 0)
break;
drmModeFreeConnector(connector);
}
if (i == resources->count_connectors) {
fprintf(stderr, "No currently active connector found.\n");
return;
}
mode = &connector->modes[0];
for (i = 0; i < resources->count_encoders; i++) {
encoder = drmModeGetEncoder(fd, resources->encoders[i]);
if (encoder == NULL)
continue;
if (encoder->encoder_id == connector->encoder_id)
break;
drmModeFreeEncoder(encoder);
}
state.surface = eglCreateSurface(state.display, state.config,
mode->hdisplay, mode->vdisplay, 2, NULL);
for (i = 0; i < 2; i++) {
eglGetColorBuffer(state.surface,
i, &b[i].name, &b[i].handle, &b[i].stride);
ret = drmModeAddFB(fd, mode->hdisplay, mode->vdisplay,
32, 32, b[i].stride, b[i].handle, &b[i].fb_id);
if (ret) {
fprintf(stderr, "failed to add fb %d: %m\n", i);
return;
}
}
ret = drmModeSetCrtc(fd, encoder->crtc_id, b[1].fb_id, 0, 0,
&connector->connector_id, 1, mode);
if (ret) {
fprintf(stderr, "failed to set mode: %m\n");
return;
}
state.context = eglCreateContext(state.display, state.config, NULL, NULL);
if (state.context == NULL)
die("failed to create context\n");
if (!eglMakeCurrent(state.display, state.surface, state.surface, state.context))
die("failed to make context current\n");
init(&state);
memset(&evctx, 0, sizeof evctx);
evctx.version = DRM_EVENT_CONTEXT_VERSION;
evctx.page_flip_handler = page_flip_handler;
i = 0;
while (1) {
render(&state);
eglBindColorBuffer(state.display, state.surface, i ^ 1);
drmModePageFlip(fd, encoder->crtc_id, b[i].fb_id, &done);
i ^= 1;
done = 0;
while (!done)
drmHandleEvent(fd, &evctx);
}
eglTerminate(state.display);
}
int setup(int argc, char *argv[], init_func_t init, render_func_t render)
{
const int x = 100, y = 100, width = 300, height = 300;
run_dri2(x, y, width, height, init, render);
fprintf(stderr, "open x11 display failed, trying drmfb\n");
run_native(x, y, width, height, init, render);
return 0;
}
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