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| author | Paul Berry <stereotype441@gmail.com> | 2013-09-02 17:35:32 -0700 |
|---|---|---|
| committer | Paul Berry <stereotype441@gmail.com> | 2013-09-16 12:53:14 -0700 |
| commit | 8c69eaba1a8a5e8a82112eb5c51b2f8978dd2c23 (patch) | |
| tree | 784a9009c7933e9b64d777b4b872a559e0d01fbe /src/mesa/drivers/dri/i965/brw_wm_state.c | |
| parent | 58f01bd17d5587c21d7f543b8f3769f3405dc420 (diff) | |
| download | external_mesa3d-8c69eaba1a8a5e8a82112eb5c51b2f8978dd2c23.zip external_mesa3d-8c69eaba1a8a5e8a82112eb5c51b2f8978dd2c23.tar.gz external_mesa3d-8c69eaba1a8a5e8a82112eb5c51b2f8978dd2c23.tar.bz2 | |
i965/fs: Change brw_wm_prog_data::urb_read_length to num_varying_inputs.
On gen4-5, the FS stage reads varying inputs from URB entries that
were output by the SF thread, where each register stores the
interpolation setup for two components of a vec4, therefore the FS
urb_read_length is twice the number of FS input varyings. On gen6+,
varying inputs are directly deposited in the FS payload by the SF/SBE
fixed function logic, so urb_read_length is irrelevant.
However, in future patches, it will be nice to be able to consult
brw_wm_prog_data to determine how many varying inputs the FS expects
(rather than inferring it from gl_program::InputsRead). So instead of
storing urb_read_length, we simply store num_varying_inputs in
brw_wm_prog_data. On gen4-5, we multiply this by 2 to recover the URB
read length.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm_state.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_state.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_state.c b/src/mesa/drivers/dri/i965/brw_wm_state.c index c98ebe7..9aa32c0 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_state.c +++ b/src/mesa/drivers/dri/i965/brw_wm_state.c @@ -133,7 +133,8 @@ brw_upload_wm_unit(struct brw_context *brw) } wm->thread3.dispatch_grf_start_reg = brw->wm.prog_data->first_curbe_grf; - wm->thread3.urb_entry_read_length = brw->wm.prog_data->urb_read_length; + wm->thread3.urb_entry_read_length = + brw->wm.prog_data->num_varying_inputs * 2; wm->thread3.urb_entry_read_offset = 0; wm->thread3.const_urb_entry_read_length = brw->wm.prog_data->curb_read_length; |