This is implemented in nvfx_state_fb and fragtex but was missing
in nvfx_screen.
This allows to avoid glCopyTexSubImage CPU fallbacks and makes Doom 3
much faster as a result.
if (tex_usage & PIPE_BIND_RENDER_TARGET) {
switch (format) {
case PIPE_FORMAT_B8G8R8A8_UNORM:
+ case PIPE_FORMAT_B8G8R8X8_UNORM:
case PIPE_FORMAT_B5G6R5_UNORM:
return TRUE;
default:
} else {
switch (format) {
case PIPE_FORMAT_B8G8R8A8_UNORM:
+ case PIPE_FORMAT_B8G8R8X8_UNORM:
case PIPE_FORMAT_B5G5R5A1_UNORM:
case PIPE_FORMAT_B4G4R4A4_UNORM:
case PIPE_FORMAT_B5G6R5_UNORM: