RDP backend uses Pixman shadow buffer inconsistently
rdp_output_enable unconditionally sets PIXMAN_RENDERER_OUTPUT_USE_SHADOW, but rdp_output_switch_mode does not. I guess switch_mode should probably use a shadow buffer.
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rdp_output_enable unconditionally sets PIXMAN_RENDERER_OUTPUT_USE_SHADOW, but rdp_output_switch_mode does not. I guess switch_mode should probably use a shadow buffer.