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#include "qemu/osdep.h"
#include <glob.h>
#include <dirent.h>
#include "ui/egl-helpers.h"
EGLDisplay *qemu_egl_display;
EGLConfig qemu_egl_config;
/* ---------------------------------------------------------------------- */
static bool egl_gles;
static int egl_debug;
#define egl_dbg(_x ...) \
do { \
if (egl_debug) { \
fprintf(stderr, "egl: " _x); \
} \
} while (0);
/* ---------------------------------------------------------------------- */
#ifdef CONFIG_OPENGL_DMABUF
int qemu_egl_rn_fd;
struct gbm_device *qemu_egl_rn_gbm_dev;
EGLContext qemu_egl_rn_ctx;
int qemu_egl_rendernode_open(void)
{
DIR *dir;
struct dirent *e;
int r, fd;
char *p;
dir = opendir("/dev/dri");
if (!dir) {
return -1;
}
fd = -1;
while ((e = readdir(dir))) {
if (e->d_type != DT_CHR) {
continue;
}
if (strncmp(e->d_name, "renderD", 7)) {
continue;
}
r = asprintf(&p, "/dev/dri/%s", e->d_name);
if (r < 0) {
return -1;
}
r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
if (r < 0) {
free(p);
continue;
}
fd = r;
free(p);
break;
}
closedir(dir);
if (fd < 0) {
return -1;
}
return fd;
}
int egl_rendernode_init(void)
{
qemu_egl_rn_fd = -1;
qemu_egl_rn_fd = qemu_egl_rendernode_open();
if (qemu_egl_rn_fd == -1) {
fprintf(stderr, "egl: no drm render node available\n");
goto err;
}
qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
if (!qemu_egl_rn_gbm_dev) {
fprintf(stderr, "egl: gbm_create_device failed\n");
goto err;
}
qemu_egl_init_dpy((EGLNativeDisplayType)qemu_egl_rn_gbm_dev, false, false);
if (!epoxy_has_egl_extension(qemu_egl_display,
"EGL_KHR_surfaceless_context")) {
fprintf(stderr, "egl: EGL_KHR_surfaceless_context not supported\n");
goto err;
}
if (!epoxy_has_egl_extension(qemu_egl_display,
"EGL_MESA_image_dma_buf_export")) {
fprintf(stderr, "egl: EGL_MESA_image_dma_buf_export not supported\n");
goto err;
}
qemu_egl_rn_ctx = qemu_egl_init_ctx();
if (!qemu_egl_rn_ctx) {
fprintf(stderr, "egl: egl_init_ctx failed\n");
goto err;
}
return 0;
err:
if (qemu_egl_rn_gbm_dev) {
gbm_device_destroy(qemu_egl_rn_gbm_dev);
}
if (qemu_egl_rn_fd != -1) {
close(qemu_egl_rn_fd);
}
return -1;
}
int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc)
{
EGLImageKHR image;
EGLint num_planes, fd;
image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
EGL_GL_TEXTURE_2D_KHR,
(EGLClientBuffer)(unsigned long)tex_id,
NULL);
if (!image) {
return -1;
}
eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
&num_planes, NULL);
if (num_planes != 1) {
eglDestroyImageKHR(qemu_egl_display, image);
return -1;
}
eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
eglDestroyImageKHR(qemu_egl_display, image);
return fd;
}
#endif /* CONFIG_OPENGL_DMABUF */
/* ---------------------------------------------------------------------- */
EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, Window win)
{
EGLSurface esurface;
EGLBoolean b;
egl_dbg("eglCreateWindowSurface (x11 win id 0x%lx) ...\n",
(unsigned long) win);
esurface = eglCreateWindowSurface(qemu_egl_display,
qemu_egl_config,
(EGLNativeWindowType)win, NULL);
if (esurface == EGL_NO_SURFACE) {
fprintf(stderr, "egl: eglCreateWindowSurface failed\n");
return NULL;
}
b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
if (b == EGL_FALSE) {
fprintf(stderr, "egl: eglMakeCurrent failed\n");
return NULL;
}
return esurface;
}
/* ---------------------------------------------------------------------- */
int qemu_egl_init_dpy(EGLNativeDisplayType dpy, bool gles, bool debug)
{
static const EGLint conf_att_gl[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_RED_SIZE, 5,
EGL_GREEN_SIZE, 5,
EGL_BLUE_SIZE, 5,
EGL_ALPHA_SIZE, 0,
EGL_NONE,
};
static const EGLint conf_att_gles[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 5,
EGL_GREEN_SIZE, 5,
EGL_BLUE_SIZE, 5,
EGL_ALPHA_SIZE, 0,
EGL_NONE,
};
EGLint major, minor;
EGLBoolean b;
EGLint n;
if (debug) {
egl_debug = 1;
setenv("EGL_LOG_LEVEL", "debug", true);
setenv("LIBGL_DEBUG", "verbose", true);
}
egl_dbg("eglGetDisplay (dpy %p) ...\n", dpy);
qemu_egl_display = eglGetDisplay(dpy);
if (qemu_egl_display == EGL_NO_DISPLAY) {
fprintf(stderr, "egl: eglGetDisplay failed\n");
return -1;
}
egl_dbg("eglInitialize ...\n");
b = eglInitialize(qemu_egl_display, &major, &minor);
if (b == EGL_FALSE) {
fprintf(stderr, "egl: eglInitialize failed\n");
return -1;
}
egl_dbg("eglBindAPI ...\n");
b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API);
if (b == EGL_FALSE) {
fprintf(stderr, "egl: eglBindAPI failed\n");
return -1;
}
egl_dbg("eglChooseConfig ...\n");
b = eglChooseConfig(qemu_egl_display,
gles ? conf_att_gles : conf_att_gl,
&qemu_egl_config, 1, &n);
if (b == EGL_FALSE || n != 1) {
fprintf(stderr, "egl: eglChooseConfig failed\n");
return -1;
}
egl_gles = gles;
return 0;
}
EGLContext qemu_egl_init_ctx(void)
{
static const EGLint ctx_att_gl[] = {
EGL_NONE
};
static const EGLint ctx_att_gles[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
EGLContext ectx;
EGLBoolean b;
egl_dbg("eglCreateContext ...\n");
ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
egl_gles ? ctx_att_gles : ctx_att_gl);
if (ectx == EGL_NO_CONTEXT) {
fprintf(stderr, "egl: eglCreateContext failed\n");
return NULL;
}
b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
if (b == EGL_FALSE) {
fprintf(stderr, "egl: eglMakeCurrent failed\n");
return NULL;
}
return ectx;
}
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