i965: Enable the accelerated ReadPixels path on gen4 along with pre-gen4.

Passes piglit pbo-read-argb8888, and doesn't otherwise regress quick.tests.

diff --git a/src/mesa/drivers/dri/intel/intel_pixel_read.c b/src/mesa/drivers/dri/intel/intel_pixel_read.c
index 4707500..20424e2 100644 (file)
--- a/src/mesa/drivers/dri/intel/intel_pixel_read.c
+++ b/src/mesa/drivers/dri/intel/intel_pixel_read.c
@@ -285,11 +285,11 @@ intelReadPixels(GLcontext * ctx,
 
    intelFlush(ctx);
 
-#ifdef I915
    if (do_blit_readpixels
        (ctx, x, y, width, height, format, type, pack, pixels))
       return;
 
+#ifdef I915
    if (do_texture_readpixels
        (ctx, x, y, width, height, format, type, pack, pixels))
       return;