Add eglGetNativeBuffer to get the GEM buffer for a GL buffer.

2 files changed, 23 insertions, 0 deletions

diff --git a/eagle.h b/eagle.h
index 6c788c5..b1eaf6f 100644
--- a/eagle.h
+++ b/eagle.h
@@ -256,6 +256,9 @@ extern EGLSurface eglCreateSurfaceForName(EGLDisplay dpy,
 					  GLuint stride,
 					  const EGLint *attribList);
 
+extern EGLBoolean eglGetNativeBuffer(EGLSurface surface, GLenum buffer,
+				     uint32_t *name, uint32_t *stride);
+
 extern EGLBoolean eglCopyNativeBuffers(EGLDisplay display,
 				       EGLSurface dst, GLenum dstBuffer,
 				       GLint dst_x, GLint dst_y,
diff --git a/intel.c b/intel.c
index dae7a5a..dfcfdd7 100644
--- a/intel.c
+++ b/intel.c
@@ -233,6 +233,26 @@ intelCreateDisplay(struct udev_device *device, const char *driver)
 	return display;
 }
 
+EGLBoolean
+eglGetNativeBuffer(EGLSurface surface, GLenum buffer,
+		   uint32_t *name, uint32_t *stride)
+{
+	EGLSurfaceNative nativeSurface = (EGLSurfaceNative) surface;
+
+	switch (buffer) {
+	case GL_FRONT_LEFT:
+		*name = nativeSurface->front.name;
+		*stride = nativeSurface->front.pitch;
+		return EGL_TRUE;
+	case GL_BACK_LEFT:
+		*name = surface->buffers[0].name;
+		*stride = surface->buffers[0].pitch;
+		return EGL_TRUE;
+	default:
+		return EGL_FALSE;
+	}
+}
+
 EGLDisplay
 i915CreateDisplay(struct udev_device *device)
 {