From 8f7338f284cdb1fef64c85e3293d2200d0cc6387 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Mon, 3 Mar 2014 13:57:16 +1000 Subject: egl: add initial EGL_MESA_image_dma_buf_export v2.4 At the moment to get an EGL image to a dma-buf file descriptor, you have to use EGL_MESA_drm_image, and then use libdrm to convert this to a file descriptor. This extension just provides an API modelled on EGL_MESA_drm_image, to return a dma-buf file descriptor. v2: update spec for new API proposal add internal queries to get the fourcc back from intel driver. v2.1: add gallium pieces. v2.2: add offsets to spec and API, rename fd->fds, stride->strides in API. rewrite spec a bit more, add some q/a v2.3: add modifiers to query interface and 64-bit type for that (Daniel Stone) specifiy what happens to num fds vs num planes differences. (Chad Versace) v2.4: fix grammar (Daniel Stone) Signed-off-by: Dave Airlie --- src/egl/drivers/dri2/egl_dri2.c | 59 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 58 insertions(+), 1 deletion(-) (limited to 'src/egl/drivers/dri2') diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c index d5031961ce0..a428f284ae7 100644 --- a/src/egl/drivers/dri2/egl_dri2.c +++ b/src/egl/drivers/dri2/egl_dri2.c @@ -525,8 +525,14 @@ dri2_setup_screen(_EGLDisplay *disp) capabilities = dri2_dpy->image->getCapabilities(dri2_dpy->dri_screen); disp->Extensions.MESA_drm_image = (capabilities & __DRI_IMAGE_CAP_GLOBAL_NAMES) != 0; - } else + + if (dri2_dpy->image->base.version >= 11) + disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE; + } else { disp->Extensions.MESA_drm_image = EGL_TRUE; + if (dri2_dpy->image->base.version >= 11) + disp->Extensions.MESA_image_dma_buf_export = EGL_TRUE; + } disp->Extensions.KHR_image_base = EGL_TRUE; disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE; @@ -1965,6 +1971,55 @@ dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img, return EGL_TRUE; } + +static EGLBoolean +dri2_export_dma_buf_image_query_mesa(_EGLDriver *drv, _EGLDisplay *disp, + _EGLImage *img, + EGLint *fourcc, EGLint *nplanes, + EGLuint64MESA *modifiers) +{ + struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); + struct dri2_egl_image *dri2_img = dri2_egl_image(img); + + (void) drv; + + + if (nplanes) + dri2_dpy->image->queryImage(dri2_img->dri_image, + __DRI_IMAGE_ATTRIB_NUM_PLANES, nplanes); + if (fourcc) + dri2_dpy->image->queryImage(dri2_img->dri_image, + __DRI_IMAGE_ATTRIB_FOURCC, fourcc); + + if (modifiers) + *modifiers = 0; + + return EGL_TRUE; +} + +static EGLBoolean +dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img, + int *fds, EGLint *strides, EGLint *offsets) +{ + struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); + struct dri2_egl_image *dri2_img = dri2_egl_image(img); + + (void) drv; + + /* rework later to provide multiple fds/strides/offsets */ + if (fds) + dri2_dpy->image->queryImage(dri2_img->dri_image, + __DRI_IMAGE_ATTRIB_FD, fds); + + if (strides) + dri2_dpy->image->queryImage(dri2_img->dri_image, + __DRI_IMAGE_ATTRIB_STRIDE, strides); + + if (offsets) + offsets[0] = 0; + + return EGL_TRUE; +} #endif #ifdef HAVE_WAYLAND_PLATFORM @@ -2219,6 +2274,8 @@ _eglBuiltInDriverDRI2(const char *args) #ifdef HAVE_LIBDRM dri2_drv->base.API.CreateDRMImageMESA = dri2_create_drm_image_mesa; dri2_drv->base.API.ExportDRMImageMESA = dri2_export_drm_image_mesa; + dri2_drv->base.API.ExportDMABUFImageQueryMESA = dri2_export_dma_buf_image_query_mesa; + dri2_drv->base.API.ExportDMABUFImageMESA = dri2_export_dma_buf_image_mesa; #endif #ifdef HAVE_WAYLAND_PLATFORM dri2_drv->base.API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl; -- cgit v1.2.3