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_validate.cpp b/src/glsl/ir_validate.cpp
index 271dbe0960a..42142da02d1 100644
--- a/src/glsl/ir_validate.cpp
+++ b/src/glsl/ir_validate.cpp
@@ -371,6 +371,11 @@ ir_validate::visit_leave(ir_expression *ir)
       /* XXX what can we assert here? */
       break;
 
+   case ir_unop_interpolate_at_centroid:
+      assert(ir->operands[0]->type == ir->type);
+      assert(ir->operands[0]->type->is_float());
+      break;
+
    case ir_binop_add:
    case ir_binop_sub:
    case ir_binop_mul:
@@ -510,6 +515,19 @@ ir_validate::visit_leave(ir_expression *ir)
              && ir->operands[1]->type->is_integer());
       break;
 
+   case ir_binop_interpolate_at_offset:
+      assert(ir->operands[0]->type == ir->type);
+      assert(ir->operands[0]->type->is_float());
+      assert(ir->operands[1]->type->components() == 2);
+      assert(ir->operands[1]->type->is_float());
+      break;
+
+   case ir_binop_interpolate_at_sample:
+      assert(ir->operands[0]->type == ir->type);
+      assert(ir->operands[0]->type->is_float());
+      assert(ir->operands[1]->type == glsl_type::int_type);
+      break;
+
    case ir_triop_fma:
       assert(ir->type->base_type == GLSL_TYPE_FLOAT);
       assert(ir->type == ir->operands[0]->type);