radeonsi: Flesh out shader interpolation related code.

Handle perspective interpolation and ceontroid vs. center.

2 files changed, 21 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeon/SIInstructions.td b/src/gallium/drivers/radeon/SIInstructions.td
index 57bbc7a5d5a..313728f044f 100644
--- a/src/gallium/drivers/radeon/SIInstructions.td
+++ b/src/gallium/drivers/radeon/SIInstructions.td
@@ -934,6 +934,24 @@ def : Pat <
              imm:$attr, SReg_32:$params)
 >;
 
+def : Pat <
+  (int_SI_fs_interp_linear_centroid imm:$attr_chan, imm:$attr, SReg_32:$params),
+  (SI_INTERP (f32 LINEAR_CENTROID_I), (f32 LINEAR_CENTROID_J), imm:$attr_chan,
+             imm:$attr, SReg_32:$params)
+>;
+
+def : Pat <
+  (int_SI_fs_interp_persp_center imm:$attr_chan, imm:$attr, SReg_32:$params),
+  (SI_INTERP (f32 PERSP_CENTER_I), (f32 PERSP_CENTER_J), imm:$attr_chan,
+             imm:$attr, SReg_32:$params)
+>;
+
+def : Pat <
+  (int_SI_fs_interp_persp_centroid imm:$attr_chan, imm:$attr, SReg_32:$params),
+  (SI_INTERP (f32 PERSP_CENTROID_I), (f32 PERSP_CENTROID_J), imm:$attr_chan,
+             imm:$attr, SReg_32:$params)
+>;
+
 /********** ================== **********/
 /********** Intrinsic Patterns **********/
 /********** ================== **********/
diff --git a/src/gallium/drivers/radeon/SIIntrinsics.td b/src/gallium/drivers/radeon/SIIntrinsics.td
index 4d23072d4f1..4e718355428 100644
--- a/src/gallium/drivers/radeon/SIIntrinsics.td
+++ b/src/gallium/drivers/radeon/SIIntrinsics.td
@@ -30,5 +30,8 @@ let TargetPrefix = "SI", isTarget = 1 in {
   class Interp : Intrinsic <[llvm_float_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], []>;
 
   def int_SI_fs_interp_linear_center : Interp;
+  def int_SI_fs_interp_linear_centroid : Interp;
+  def int_SI_fs_interp_persp_center : Interp;
+  def int_SI_fs_interp_persp_centroid : Interp;
   def int_SI_fs_interp_constant : Interp;
 }