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#include <errno.h>
#include <string.h>
#include "jogamp_newt_driver_gbm_DisplayDriver.h"
#include "jogamp_newt_driver_gbm_ScreenDriver.h"
#include "jogamp_newt_driver_gbm_WindowDriver.h"
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <gbm.h>
static struct {
struct gbm_device *dev;
struct gbm_surface *surface;
} gbm;
static struct {
int fd;
drmModeModeInfo *mode;
uint32_t crtc_id;
uint32_t connector_id;
} drm;
struct drm_fb {
struct gbm_bo *bo;
uint32_t fb_id;
};
/*
* Class: jogamp_newt_driver_gbm_DisplayDriver
* Method: initGbm
* Signature: (J)V
*/
JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_gbm_DisplayDriver_initGbm
(JNIEnv *env, jobject this){
static const char *modules[] = {
"i915", "radeon", "nouveau", "vmwgfx", "omapdrm", "exynos", "msm"
};
drmModeRes *resources;
drmModeConnector *connector = NULL;
drmModeEncoder *encoder = NULL;
int i, area;
for (i = 0; i < ARRAY_SIZE(modules); i++) {
printf("trying to load module %s...", modules[i]);
drm.fd = drmOpen(modules[i], NULL);
if (drm.fd < 0) {
printf("failed.\n");
} else {
printf("success.\n");
break;
}
}
if (drm.fd < 0) {
printf("could not open drm device\n");
return -1;
}
resources = drmModeGetResources(drm.fd);
if (!resources) {
printf("drmModeGetResources failed: %s\n", strerror(errno));
return -1;
}
/* find a connected connector: */
for (i = 0; i < resources->count_connectors; i++) {
connector = drmModeGetConnector(drm.fd, resources->connectors[i]);
if (connector->connection == DRM_MODE_CONNECTED) {
/* it's connected, let's use this! */
break;
}
drmModeFreeConnector(connector);
connector = NULL;
}
if (!connector) {
/* we could be fancy and listen for hotplug events and wait for
* a connector..
*/
printf("no connected connector!\n");
return -1;
}
/* find highest resolution mode: */
for (i = 0, area = 0; i < connector->count_modes; i++) {
drmModeModeInfo *current_mode = &connector->modes[i];
int current_area = current_mode->hdisplay * current_mode->vdisplay;
if (current_area > area) {
drm.mode = current_mode;
area = current_area;
}
}
if (!drm.mode) {
printf("could not find mode!\n");
return -1;
}
/* find encoder: */
for (i = 0; i < resources->count_encoders; i++) {
encoder = drmModeGetEncoder(drm.fd, resources->encoders[i]);
if (encoder->encoder_id == connector->encoder_id)
break;
drmModeFreeEncoder(encoder);
encoder = NULL;
}
if (!encoder) {
printf("no encoder!\n");
return -1;
}
drm.crtc_id = encoder->crtc_id;
drm.connector_id = connector->connector_id;
gbm.dev = gbm_create_device(drm.fd);
return gbm.dev;
}
/*
* Class: jogamp_newt_driver_gbm_DisplayDriver
* Method: destroyDisplay
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_jogamp_newt_driver_gbm_DisplayDriver_destroyDisplay
(JNIEnv *env, jobject this){
}
/*
* Class: jogamp_newt_driver_gbm_WindowDriver
* Method: createSurface
* Signature: (J)J
*/
JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_gbm_WindowDriver_createSurface
(JNIEnv *env, jobject this){
gbm.surface = gbm_surface_create(gbm.dev,
drm.mode->hdisplay, drm.mode->vdisplay,
GBM_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
if (!gbm.surface) {
printf("failed to create gbm surface\n");
return -1;
}
return gbm.surface;
}
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