diff options
| -rw-r--r-- | ir.cpp | 56 | ||||
| -rw-r--r-- | ir.h | 5 |
2 files changed, 61 insertions, 0 deletions
@@ -423,6 +423,62 @@ ir_constant::get_record_field(const char *name) } +bool +ir_constant::has_value(const ir_constant *c) const +{ + if (this->type != c->type) + return false; + + /* FINISHME: This will probably also handle constant arrays as soon as those + * FINISHME: are supported. + */ + if (this->type->base_type == GLSL_TYPE_STRUCT) { + const exec_node *a_node = this->components.head; + const exec_node *b_node = c->components.head; + + while (!a_node->is_tail_sentinal()) { + assert(!b_node->is_tail_sentinal()); + + const ir_constant *const a_field = (ir_constant *) a_node; + const ir_constant *const b_field = (ir_constant *) b_node; + + if (!a_field->has_value(b_field)) + return false; + + a_node = a_node->next; + b_node = b_node->next; + } + + return true; + } + + for (unsigned i = 0; i < this->type->components(); i++) { + switch (this->type->base_type) { + case GLSL_TYPE_UINT: + if (this->value.u[i] != c->value.u[i]) + return false; + break; + case GLSL_TYPE_INT: + if (this->value.i[i] != c->value.i[i]) + return false; + break; + case GLSL_TYPE_FLOAT: + if (this->value.f[i] != c->value.f[i]) + return false; + break; + case GLSL_TYPE_BOOL: + if (this->value.b[i] != c->value.b[i]) + return false; + break; + default: + assert(!"Should not get here."); + return false; + } + } + + return true; +} + ir_dereference_variable::ir_dereference_variable(ir_variable *var) { this->var = var; @@ -1092,6 +1092,11 @@ public: ir_constant *get_record_field(const char *name); /** + * Determine whether a constant has the same value as another constant + */ + bool has_value(const ir_constant *) const; + + /** * Value of the constant. * * The field used to back the values supplied by the constant is determined |