glsl: add new expression types for interpolateAt*

Will be used to implement interpolateAt*() from ARB_gpu_shader5

Signed-off-by: Chris Forbes <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/glsl/ir_builder.cpp b/src/glsl/ir_builder.cpp
index f4a1c6efa0b..f03941443e0 100644
--- a/src/glsl/ir_builder.cpp
+++ b/src/glsl/ir_builder.cpp
@@ -501,6 +501,24 @@ b2f(operand a)
 }
 
 ir_expression *
+interpolate_at_centroid(operand a)
+{
+   return expr(ir_unop_interpolate_at_centroid, a);
+}
+
+ir_expression *
+interpolate_at_offset(operand a, operand b)
+{
+   return expr(ir_binop_interpolate_at_offset, a, b);
+}
+
+ir_expression *
+interpolate_at_sample(operand a, operand b)
+{
+   return expr(ir_binop_interpolate_at_sample, a, b);
+}
+
+ir_expression *
 fma(operand a, operand b, operand c)
 {
    return expr(ir_triop_fma, a, b, c);