EGL/android: pbuffer implementation

Android path didn't support pbuffer, so add pbuffer support to fix
most failing dEQP and CTS pbuffer test cases.

Patch adds a single buffer config to support pbuffer, and creates
image in getBuffers for pbuffer when surface type is front surface.

The EGL 1.5 spec states that pbuffers have a back buffer but no front
buffer, single-buffered surfaces with no front buffer confuse Mesa;
so we deviate from the spec, following the precedent of Mesa's EGL
X11 platform.

V3: update commit message and code review changes.

Signed-off-by: Liu Zhiquan <[email protected]>
Signed-off-by: Kalyan Kondapally <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index 0020a5b984c..c039b64cb2c 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -290,7 +290,8 @@ struct dri2_egl_surface
 #ifdef HAVE_ANDROID_PLATFORM
    struct ANativeWindow *window;
    struct ANativeWindowBuffer *buffer;
-   __DRIimage *dri_image;
+   __DRIimage *dri_image_back;
+   __DRIimage *dri_image_front;
 
    /* EGL-owned buffers */
    __DRIbuffer           *local_buffers[__DRI_BUFFER_COUNT];