Mesa (glsl2): glsl2: Add support for ir_unop_neg to ir_mat_op_to_vec
Eric Anholt
anholt at kemper.freedesktop.org
Sat Aug 14 00:55:43 UTC 2010
Module: Mesa
Branch: glsl2
Commit: 013bbbbb0ac52a12d1e4413700dc40dee70186f8
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=013bbbbb0ac52a12d1e4413700dc40dee70186f8
Author: Eric Anholt <eric at anholt.net>
Date: Tue Aug 10 19:52:02 2010 -0700
glsl2: Add support for ir_unop_neg to ir_mat_op_to_vec
---
src/glsl/ir_mat_op_to_vec.cpp | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/src/glsl/ir_mat_op_to_vec.cpp b/src/glsl/ir_mat_op_to_vec.cpp
index 880454c..80e0579 100644
--- a/src/glsl/ir_mat_op_to_vec.cpp
+++ b/src/glsl/ir_mat_op_to_vec.cpp
@@ -311,6 +311,30 @@ ir_mat_op_to_vec_visitor::visit_leave(ir_assignment *assign)
/* OK, time to break down this matrix operation. */
switch (expr->operation) {
+ case ir_unop_neg: {
+ const unsigned mask = (1U << result_var->type->vector_elements) - 1;
+
+ /* Apply the operation to each column.*/
+ for (i = 0; i < matrix_columns; i++) {
+ ir_rvalue *op0 = get_column(op_var[0], i);
+ ir_dereference *result = get_column(result_var, i);
+ ir_expression *column_expr;
+ ir_assignment *column_assign;
+
+ column_expr = new(base_ir) ir_expression(expr->operation,
+ result->type,
+ op0,
+ NULL);
+
+ column_assign = new(base_ir) ir_assignment(result,
+ column_expr,
+ NULL,
+ mask);
+ assert(column_assign->write_mask != 0);
+ base_ir->insert_before(column_assign);
+ }
+ break;
+ }
case ir_binop_add:
case ir_binop_sub:
case ir_binop_div:
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