[Mesa-dev] [PATCH 2/3] egl: return corresponding offset of EGLImage instead of 0.

[Chuanbo Weng]

The offset should not always be 0. For example, if EGLImage is
created from a 2D texture with EGL_GL_TEXTURE_LEVEL=1, then the
offset should be the actual start of miplevel 1 in bo.

Signed-off-by: Chuanbo Weng <chuanbo.weng at intel.com>
---
 src/egl/drivers/dri2/egl_dri2.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 859612f..8ef0acd 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -2249,6 +2249,8 @@ dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *im
    struct dri2_egl_image *dri2_img = dri2_egl_image(img);
 
    (void) drv;
+   EGLBoolean ret = EGL_TRUE;
+   EGLint img_offset = 0;
 
    /* rework later to provide multiple fds/strides/offsets */
    if (fds)
@@ -2259,10 +2261,14 @@ dri2_export_dma_buf_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *im
       dri2_dpy->image->queryImage(dri2_img->dri_image,
 				  __DRI_IMAGE_ATTRIB_STRIDE, strides);
 
-   if (offsets)
-      offsets[0] = 0;
+   if (offsets){
+      ret = dri2_dpy->image->queryImage(dri2_img->dri_image,
+				        __DRI_IMAGE_ATTRIB_OFFSET, &img_offset);
+      if(ret == EGL_TRUE)
+        offsets[0] = img_offset;
+   }
 
-   return EGL_TRUE;
+   return ret;
 }
 
 #endif
-- 
1.9.1