From: Matt Turner <matts...@gmail.com>
On HSW+, scalar DF sources can be accessed using the normal <0,1,0>
region, but on IVB and BYT DF regions must be programmed in terms of
floats. A <0,2,1> region accomplishes this.
v2:
- Apply region <0,2,1> in brw_reg_from_fs_reg() (Curro).
Signed-off-by: Samuel Iglesias Gonsálvez <sigles...@igalia.com>
---
src/mesa/drivers/dri/i965/brw_fs_generator.cpp | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
index b0d5732ac5c..2f60ddd8706 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
@@ -145,6 +145,15 @@ brw_reg_from_fs_reg(const struct gen_device_info *devinfo,
fs_inst *inst,
unreachable("not reached");
}
+ if (devinfo->gen == 7 && !devinfo->is_haswell &&
+ type_sz(reg->type) == 8 &&
+ brw_reg.vstride == BRW_VERTICAL_STRIDE_0 &&
+ brw_reg.width == BRW_WIDTH_1 &&
+ brw_reg.hstride == BRW_HORIZONTAL_STRIDE_0) {
+ brw_reg.width = BRW_WIDTH_2;
+ brw_reg.hstride = BRW_HORIZONTAL_STRIDE_1;
+ }
+
return brw_reg;
}
--
2.11.0
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