Mesa (master): i965/fs: Copy the offset when lowering logical pull constant sends
Jason Ekstrand
jekstrand at kemper.freedesktop.org
Wed Jun 1 23:06:08 UTC 2016
Module: Mesa
Branch: master
Commit: 1205999c229b8e67af39fb9875bd87bc0a1404eb
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=1205999c229b8e67af39fb9875bd87bc0a1404eb
Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date: Wed Jun 1 15:01:04 2016 -0700
i965/fs: Copy the offset when lowering logical pull constant sends
This fixes 64 Vulkan CTS tests per gen
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96299
Reviewed-by: Francisco Jerez <currojerez at riseup.net>
Cc: "12.0" <mesa-stable at lists.freedesktop.org>
---
src/mesa/drivers/dri/i965/brw_fs.cpp | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 00d937e..bd026de 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -4448,6 +4448,14 @@ lower_varying_pull_constant_logical_send(const fs_builder &bld, fs_inst *inst)
const brw_device_info *devinfo = bld.shader->devinfo;
if (devinfo->gen >= 7) {
+ /* We are switching the instruction from an ALU-like instruction to a
+ * send-from-grf instruction. Since sends can't handle strides or
+ * source modifiers, we have to make a copy of the offset source.
+ */
+ fs_reg tmp = bld.vgrf(BRW_REGISTER_TYPE_UD);
+ bld.MOV(tmp, inst->src[1]);
+ inst->src[1] = tmp;
+
inst->opcode = FS_OPCODE_VARYING_PULL_CONSTANT_LOAD_GEN7;
} else {
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