I was testing that out and I'm stuck and trying to convert the dma-fd into a drm handle using drmPrimeFDToHandle. I get "Input/output error" and dmesg says: "vc4-drm gpu: swiotlb buffer is full (sz: 524288 bytes), total 32768 (slots), used 1796 (slots)". No idea what that means. Code:
Output:
So it got the two functions, created the image, correctly identified the fourcc format, create the file descriptor, correctly calculated the stride (I have a 1920 wide texture). But then fail to convert that to a drm handle. Oh well ![:-)]( "Smile")
Code:
PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC eglExportDMABUFImageQueryMESA = (PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC)eglGetProcAddress("eglExportDMABUFImageQueryMESA"); PFNEGLEXPORTDMABUFIMAGEMESAPROC eglExportDMABUFImageMESA = (PFNEGLEXPORTDMABUFIMAGEMESAPROC)eglGetProcAddress("eglExportDMABUFImageMESA"); v("%p %p\n", eglExportDMABUFImageQueryMESA, eglExportDMABUFImageMESA); EGLImage image = eglCreateImage(display, context, EGL_GL_TEXTURE_2D, (EGLClientBuffer)(uint64_t)img->tex, NULL); v("%p\n", image); int dmabuf_fd; uint32_t handles[4] = {0}, strides[4] = {0}, offsets[4] = {0}; uint64_t modifiers[4] = {0}; uint32_t fourcc; eglExportDMABUFImageQueryMESA(display, image, &fourcc, NULL, NULL); v("%c%c%c%c\n", (fourcc >> 0) & 0xff, (fourcc >> 8) & 0xff, (fourcc >> 16) & 0xff, (fourcc >> 24) & 0xff ); eglExportDMABUFImageMESA(display, image, &dmabuf_fd, &strides[0], &offsets[0]); v("%d\n", dmabuf_fd); v("%d\n", strides[0]); v("%d\n", offsets[0]); if (drmPrimeFDToHandle(drm_fd, dmabuf_fd, &handles[0])) die("cannot import dma-fd %m");Code:
0xf6ee09ac 0xf6ee0c400xed802d90XB241876800
Statistics: Posted by dividuum — Sat Apr 06, 2024 9:58 am