glsl: Extend ir_expression_operation for GLSL 3.00 pack/unpack functions (v2)

For each function {pack,unpack}{Snorm,Unorm,Half}2x16, add a corresponding
opcode to enum ir_expression_operation.  Validate the new opcodes in
ir_validate.cpp.

Also, add opcodes for scalarized variants of the Half2x16 functions.  (The
code generator for the i965 fragment shader requires that all vector
operations be scalarized.  A lowering pass, to be added later, will
scalarize the Half2x16 functions).

v2: Fix assertion message in ir_to_mesa [for idr].

Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Tuner <[email protected]>
Signed-off-by: Chad Versace <[email protected]>

1 files changed, 27 insertions, 0 deletions

diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index 75a9f24cf29..98e926d090a 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -306,6 +306,8 @@ ir_expression::ir_expression(int op, ir_rvalue *op0)
       break;
 
    case ir_unop_noise:
+   case ir_unop_unpack_half_2x16_split_x:
+   case ir_unop_unpack_half_2x16_split_y:
       this->type = glsl_type::float_type;
       break;
 
@@ -313,6 +315,18 @@ ir_expression::ir_expression(int op, ir_rvalue *op0)
       this->type = glsl_type::bool_type;
       break;
 
+   case ir_unop_pack_snorm_2x16:
+   case ir_unop_pack_unorm_2x16:
+   case ir_unop_pack_half_2x16:
+      this->type = glsl_type::uint_type;
+      break;
+
+   case ir_unop_unpack_snorm_2x16:
+   case ir_unop_unpack_unorm_2x16:
+   case ir_unop_unpack_half_2x16:
+      this->type = glsl_type::vec2_type;
+      break;
+
    default:
       assert(!"not reached: missing automatic type setup for ir_expression");
       this->type = op0->type;
@@ -386,6 +400,10 @@ ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1)
       this->type = glsl_type::float_type;
       break;
 
+   case ir_binop_pack_half_2x16_split:
+      this->type = glsl_type::uint_type;
+      break;
+
    case ir_binop_lshift:
    case ir_binop_rshift:
       this->type = op0->type;
@@ -454,6 +472,14 @@ static const char *const operator_strs[] = {
    "cos_reduced",
    "dFdx",
    "dFdy",
+   "packSnorm2x16",
+   "packUnorm2x16",
+   "packHalf2x16",
+   "unpackSnorm2x16",
+   "unpackUnorm2x16",
+   "unpackHalf2x16",
+   "unpackHalf2x16_split_x",
+   "unpackHalf2x16_split_y",
    "noise",
    "+",
    "-",
@@ -480,6 +506,7 @@ static const char *const operator_strs[] = {
    "min",
    "max",
    "pow",
+   "packHalf2x16_split",
    "ubo_load",
    "vector",
 };