But instead of just writing to the buffer, the GPU driver does a copy of the previous (N-1) buffer, because we specified the surface with the attribute "EGL_SWAP_BEHAVIOR" set to "EGL_BUFFER_PRESERVED". With the patch, we can query the exact buffer age via "EGL_EXT_buffer_age". ...
EGLContext egl; }; static struct my_display get_display(void) { struct my_display dpy; int fd = open("/dev/dri/renderD128", O_RDWR | FD_CLOEXEC); if (fd < 0) { abort(); } dpy.gbm = gbm_create_device(fd); if (!dpy.gbm) { abort(); } dpy.egl = eglGetDisplay((EGLNati...
https://github.com/wayland-project/weston/blob/master/clients/simple-dmabuf-egl.c https://gstreamer.freedesktop.org/data/events/gstreamer-conference/2012/omap-dmabuf-gstcon2012.pdf
通过下面的代码 建立了一个OpenGL Context,可以绘图int fd;fd = open("/dev/dri/card0", O_RDWR);struct gbm_device *gbm;gbm = gbm_create_device(fd);EGLDisplay dpy;dpy = eglGetDisplay(gbm);EGLContext EGL 参考资料 github 原创 proware 2023-01-31 00:20:30 299阅读 flink部署hadoop flink...
void *egl_dpy, void *egl_img, uint32_t width, uint32_t height, uint32_t usage); uint32_t gbm_bo_get_width(struct gbm_bo *bo); uint32_t gbm_bo_get_height(struct gbm_bo *bo); uint32_t gbm_bo_get_pitch(struct gbm_bo *bo); union gbm_bo_handle gbm_bo_get_handle(struct ...
Wi**d风上传270.38 KB文件格式zipopengles 基于EGL/GBM/DRM的opengles开发示例,可以作为学习的起点; GBM/DRM显示可应用在没有xserver的环境,嵌入式开发可能会用到 (0)踩踩(0) 所需:3积分 greycat1232019-05-07 10:31:44 评论 不错不错非常好~
How can I get more information andis there a workaround to prevent the segfault? For what it's worth, Wayland EGL is able to start the emulator somehow, but I see nothing but a black screen on the device. X11 is working, but I'd like to stay on Wayland if it is possible. ...
GBM long range PCR of EGFR intron 1.Sarah E. WheelerAnn Marie EgloffLin WangC. David JamesPeter S. HammermanJennifer R. Grandis
eglSwapBuffers( lpContext->GetEGLDisplay(), lpContext->GetEGLSurface() ); next_bo = gbm_surface_lock_front_buffer( gbm.surface ); // Take a long time... fb = drm_fb_get_from_bo(next_bo); drmModePageFlip(drm.fd, drm.crtc_id[DISP_ID], fb->fb_id, ...
Earlier this year was the proposed NVIDIA code from NVIDIA forallowing Mesa's GBM to support alternative back-ends. This support is notable given that most Wayland compositors are catering to using Mesa's Generic Buffer Manager (GBM) rather than EGLStreams or other options for buffer management....