From 6d897f07cf7ed8492ef5f0da90259856fdac5bf6 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Wed, 21 Jul 2010 18:06:18 -0700 Subject: ir_constant_expression: Add support for the "lessThan" builtin. --- src/glsl/ir_constant_expression.cpp | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'src/glsl/ir_constant_expression.cpp') diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp index 4a5eb7540a4..032214eb3c4 100644 --- a/src/glsl/ir_constant_expression.cpp +++ b/src/glsl/ir_constant_expression.cpp @@ -901,7 +901,22 @@ ir_call::constant_expression_value() } else if (strcmp(callee, "length") == 0) { return NULL; /* FINISHME: implement this */ } else if (strcmp(callee, "lessThan") == 0) { - return NULL; /* FINISHME: implement this */ + assert(op[0]->type->is_vector() && op[1] && op[1]->type->is_vector()); + for (unsigned c = 0; c < op[0]->type->components(); c++) { + switch (op[0]->type->base_type) { + case GLSL_TYPE_UINT: + data.b[c] = op[0]->value.u[c] < op[1]->value.u[c]; + break; + case GLSL_TYPE_INT: + data.b[c] = op[0]->value.i[c] < op[1]->value.i[c]; + break; + case GLSL_TYPE_FLOAT: + data.b[c] = op[0]->value.f[c] < op[1]->value.f[c]; + break; + default: + assert(!"Should not get here."); + } + } } else if (strcmp(callee, "lessThanEqual") == 0) { return NULL; /* FINISHME: implement this */ } else if (strcmp(callee, "log") == 0) { -- cgit v1.2.3