From ee9a3a51b61f0afe75b4b8b0c3025310140437ec Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Wed, 21 Jul 2010 15:54:15 -0700 Subject: [PATCH] glsl2: Add new ir_constant::zero static method. This conveniently creates a zero value of whatever type you want. --- src/glsl/ir.cpp | 12 ++++++++++++ src/glsl/ir.h | 5 +++++ 2 files changed, 17 insertions(+) diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp index c75d560c48c..bb58d956243 100644 --- a/src/glsl/ir.cpp +++ b/src/glsl/ir.cpp @@ -326,6 +326,18 @@ ir_constant::ir_constant(const struct glsl_type *type, exec_list *value_list) } } +ir_constant * +ir_constant::zero(void *mem_ctx, const glsl_type *type) +{ + assert(type->is_numeric()); + + ir_constant *c = new(mem_ctx) ir_constant; + c->type = type; + memset(&c->value, 0, sizeof(c->value)); + + return c; +} + bool ir_constant::get_bool_component(unsigned i) const { diff --git a/src/glsl/ir.h b/src/glsl/ir.h index 202685d145a..bee9f6a2de4 100644 --- a/src/glsl/ir.h +++ b/src/glsl/ir.h @@ -1248,6 +1248,11 @@ public: */ ir_constant(const ir_constant *c, unsigned i); + /** + * Return a new ir_constant of the specified type containing all zeros. + */ + static ir_constant *zero(void *mem_ctx, const glsl_type *type); + virtual ir_constant *clone(struct hash_table *) const; virtual ir_constant *constant_expression_value(); -- 2.30.2