diff options
| author | Paul Berry <[email protected]> | 2011-10-21 17:20:32 -0700 |
|---|---|---|
| committer | Paul Berry <[email protected]> | 2011-10-27 15:31:53 -0700 |
| commit | e04bdeae82797dbdcf6f544a997a4626fdfd4aee (patch) | |
| tree | e84f3f73a94b9c99bfc6fc4e60cf8de9f0fae285 /src/mesa/drivers/dri/i965/brw_context.h | |
| parent | 102bdd26e1acf1ebf75ef85b62df2400239fd480 (diff) | |
i965/gen6+: Parameterize barycentric interpolation modes.
This patch modifies the fragment shader back-end so that instead of
using a single delta_x/delta_y register pair to store barycentric
coordinates, it uses an array of such register pairs, one for each
possible intepolation mode.
When setting up the WM, we intstruct it to only provide the
barycentric coordinates that are actually needed by the fragment
shader--that is computed by brw_compute_barycentric_interp_modes().
Currently this function returns just
BRW_WM_PERSPECTIVE_PIXEL_BARYCENTRIC, because this is the only
interpolation mode we support. However, that will change in a later
patch.
Reviewed-by: Eric Anholt <[email protected]>
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_context.h')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_context.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h index ff25b093b47..4ae8580ac57 100644 --- a/src/mesa/drivers/dri/i965/brw_context.h +++ b/src/mesa/drivers/dri/i965/brw_context.h @@ -976,6 +976,11 @@ void brw_compute_vue_map(struct brw_vue_map *vue_map, GLbitfield64 outputs_written); gl_clip_plane *brw_select_clip_planes(struct gl_context *ctx); +/* brw_wm.c */ +unsigned +brw_compute_barycentric_interp_modes(void); + + /*====================================================================== * Inline conversion functions. These are better-typed than the |