[Mesa-dev] [PATCH 1/2] egl_dri2: Avoid using createSubImage when not neccassery

[Jakob Bornecrantz]

Makes it possible to run Wayland on Gallium drivers. At least a bit until
it tries to use gbm cursor bo's.

Signed-off-by: Jakob Bornecrantz <jakob at vmware.com>
---
 src/egl/drivers/dri2/egl_dri2.c |   22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index a78ee8b..7648e68 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -1142,9 +1142,13 @@ dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
    offset = buffer->offset[index];
    stride = buffer->stride[index];
 
-   dri_image = dri2_dpy->image->createSubImage(buffer->driver_buffer,
-                                               width, height, format,
-                                               offset, stride / cpp, NULL);
+   if (f->nplanes == 1) {
+      dri_image = dri2_dpy->image->dupImage(buffer->driver_buffer, NULL);
+   } else {
+      dri_image = dri2_dpy->image->createSubImage(buffer->driver_buffer,
+                                                  width, height, format,
+                                                  offset, stride / cpp, NULL);
+   }
 
    return dri2_create_image(disp, dri_image);
 }
@@ -1305,11 +1309,17 @@ dri2_wl_reference_buffer(void *user_data, uint32_t name,
 {
    _EGLDisplay *disp = user_data;
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
-   int i;
+   const struct wl_drm_format_descriptor *f;
+   int i, format = 0;
 
    for (i = 0; i < ARRAY_SIZE(wl_drm_formats); i++)
       if (wl_drm_formats[i].wl_format == buffer->format) {
-         buffer->driver_format = &wl_drm_formats[i];
+         f = &wl_drm_formats[i];
+         buffer->driver_format = f;
+         if (f->nplanes == 1)
+            format = f->planes[0].dri_format;
+         else
+            format = __DRI_IMAGE_FORMAT_NONE;
          break;
       }
 
@@ -1320,7 +1330,7 @@ dri2_wl_reference_buffer(void *user_data, uint32_t name,
       dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
                                            buffer->buffer.width,
                                            buffer->buffer.height, 
-                                           __DRI_IMAGE_FORMAT_NONE, name,
+                                           format, name,
                                            buffer->stride[0] / 4,
                                            NULL);
 }
-- 
1.7.9.5