According to https://www.khronos.org/registry/EGL/extensions/MESA/EGL_MESA_platform_gbm.txt if MESA_platform_gbm is supported display should be initialized from a GBM handle using eglGetPlatformDisplayEXT. Signed-off-by: Frediano Ziglio <fziglio@redhat.com> Message-id: 20170220095055.4234-1-fziglio@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
292 lines
7.8 KiB
C
292 lines
7.8 KiB
C
/*
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* Copyright (C) 2015-2016 Gerd Hoffmann <kraxel@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include <glob.h>
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#include <dirent.h>
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#include "qemu/error-report.h"
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#include "ui/egl-helpers.h"
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EGLDisplay *qemu_egl_display;
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EGLConfig qemu_egl_config;
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/* ---------------------------------------------------------------------- */
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static bool egl_gles;
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static int egl_debug;
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#define egl_dbg(_x ...) \
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do { \
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if (egl_debug) { \
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fprintf(stderr, "egl: " _x); \
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} \
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} while (0);
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/* ---------------------------------------------------------------------- */
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#ifdef CONFIG_OPENGL_DMABUF
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int qemu_egl_rn_fd;
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struct gbm_device *qemu_egl_rn_gbm_dev;
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EGLContext qemu_egl_rn_ctx;
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static int qemu_egl_rendernode_open(const char *rendernode)
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{
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DIR *dir;
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struct dirent *e;
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int r, fd;
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char *p;
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if (rendernode) {
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return open(rendernode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
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}
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dir = opendir("/dev/dri");
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if (!dir) {
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return -1;
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}
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fd = -1;
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while ((e = readdir(dir))) {
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if (e->d_type != DT_CHR) {
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continue;
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}
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if (strncmp(e->d_name, "renderD", 7)) {
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continue;
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}
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p = g_strdup_printf("/dev/dri/%s", e->d_name);
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r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
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if (r < 0) {
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g_free(p);
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continue;
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}
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fd = r;
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g_free(p);
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break;
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}
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closedir(dir);
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if (fd < 0) {
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return -1;
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}
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return fd;
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}
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int egl_rendernode_init(const char *rendernode)
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{
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qemu_egl_rn_fd = -1;
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qemu_egl_rn_fd = qemu_egl_rendernode_open(rendernode);
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if (qemu_egl_rn_fd == -1) {
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error_report("egl: no drm render node available");
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goto err;
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}
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qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
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if (!qemu_egl_rn_gbm_dev) {
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error_report("egl: gbm_create_device failed");
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goto err;
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}
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qemu_egl_init_dpy((EGLNativeDisplayType)qemu_egl_rn_gbm_dev, false, false);
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if (!epoxy_has_egl_extension(qemu_egl_display,
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"EGL_KHR_surfaceless_context")) {
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error_report("egl: EGL_KHR_surfaceless_context not supported");
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goto err;
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}
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if (!epoxy_has_egl_extension(qemu_egl_display,
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"EGL_MESA_image_dma_buf_export")) {
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error_report("egl: EGL_MESA_image_dma_buf_export not supported");
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goto err;
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}
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qemu_egl_rn_ctx = qemu_egl_init_ctx();
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if (!qemu_egl_rn_ctx) {
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error_report("egl: egl_init_ctx failed");
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goto err;
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}
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return 0;
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err:
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if (qemu_egl_rn_gbm_dev) {
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gbm_device_destroy(qemu_egl_rn_gbm_dev);
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}
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if (qemu_egl_rn_fd != -1) {
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close(qemu_egl_rn_fd);
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}
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return -1;
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}
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int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc)
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{
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EGLImageKHR image;
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EGLint num_planes, fd;
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image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
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EGL_GL_TEXTURE_2D_KHR,
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(EGLClientBuffer)(unsigned long)tex_id,
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NULL);
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if (!image) {
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return -1;
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}
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eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
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&num_planes, NULL);
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if (num_planes != 1) {
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eglDestroyImageKHR(qemu_egl_display, image);
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return -1;
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}
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eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
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eglDestroyImageKHR(qemu_egl_display, image);
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return fd;
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}
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#endif /* CONFIG_OPENGL_DMABUF */
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/* ---------------------------------------------------------------------- */
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EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, Window win)
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{
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EGLSurface esurface;
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EGLBoolean b;
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egl_dbg("eglCreateWindowSurface (x11 win id 0x%lx) ...\n",
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(unsigned long) win);
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esurface = eglCreateWindowSurface(qemu_egl_display,
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qemu_egl_config,
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(EGLNativeWindowType)win, NULL);
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if (esurface == EGL_NO_SURFACE) {
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error_report("egl: eglCreateWindowSurface failed");
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return NULL;
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}
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b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
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if (b == EGL_FALSE) {
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error_report("egl: eglMakeCurrent failed");
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return NULL;
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}
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return esurface;
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}
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/* ---------------------------------------------------------------------- */
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int qemu_egl_init_dpy(EGLNativeDisplayType dpy, bool gles, bool debug)
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{
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static const EGLint conf_att_gl[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
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EGL_RED_SIZE, 5,
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EGL_GREEN_SIZE, 5,
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EGL_BLUE_SIZE, 5,
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EGL_ALPHA_SIZE, 0,
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EGL_NONE,
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};
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static const EGLint conf_att_gles[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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EGL_RED_SIZE, 5,
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EGL_GREEN_SIZE, 5,
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EGL_BLUE_SIZE, 5,
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EGL_ALPHA_SIZE, 0,
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EGL_NONE,
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};
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EGLint major, minor;
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EGLBoolean b;
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EGLint n;
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if (debug) {
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egl_debug = 1;
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setenv("EGL_LOG_LEVEL", "debug", true);
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setenv("LIBGL_DEBUG", "verbose", true);
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}
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egl_dbg("eglGetDisplay (dpy %p) ...\n", dpy);
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#ifdef EGL_MESA_platform_gbm
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qemu_egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_GBM_MESA, dpy, NULL);
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#else
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qemu_egl_display = eglGetDisplay(dpy);
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#endif
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if (qemu_egl_display == EGL_NO_DISPLAY) {
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error_report("egl: eglGetDisplay failed");
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return -1;
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}
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egl_dbg("eglInitialize ...\n");
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b = eglInitialize(qemu_egl_display, &major, &minor);
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if (b == EGL_FALSE) {
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error_report("egl: eglInitialize failed");
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return -1;
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}
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egl_dbg("eglBindAPI ...\n");
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b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API);
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if (b == EGL_FALSE) {
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error_report("egl: eglBindAPI failed");
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return -1;
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}
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egl_dbg("eglChooseConfig ...\n");
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b = eglChooseConfig(qemu_egl_display,
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gles ? conf_att_gles : conf_att_gl,
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&qemu_egl_config, 1, &n);
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if (b == EGL_FALSE || n != 1) {
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error_report("egl: eglChooseConfig failed");
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return -1;
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}
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egl_gles = gles;
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return 0;
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}
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EGLContext qemu_egl_init_ctx(void)
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{
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static const EGLint ctx_att_gl[] = {
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EGL_NONE
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};
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static const EGLint ctx_att_gles[] = {
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_NONE
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};
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EGLContext ectx;
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EGLBoolean b;
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egl_dbg("eglCreateContext ...\n");
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ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
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egl_gles ? ctx_att_gles : ctx_att_gl);
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if (ectx == EGL_NO_CONTEXT) {
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error_report("egl: eglCreateContext failed");
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return NULL;
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}
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b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
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if (b == EGL_FALSE) {
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error_report("egl: eglMakeCurrent failed");
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return NULL;
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}
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return ectx;
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}
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