Create the ps_image and ps_yuv_image arrays for different feature settings.
Create the ps_image and ps_yuv_image arrays for different feature settings.

Each feature combination has its shader object in the array. We will select the correct one according the image_buffer_kind, format and color_space properties.

servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender