From cb63929df4ce17e94e8ead0316a00d48b51944c9 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Thu, 8 Jul 2010 23:18:09 -0700 Subject: [PATCH] ir_constant_expression: Add support for ir_unop_log2. This uses a C99 function. --- src/glsl/ir_constant_expression.cpp | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp index 871bce4..292461e 100644 --- a/src/glsl/ir_constant_expression.cpp +++ b/src/glsl/ir_constant_expression.cpp @@ -337,6 +337,13 @@ ir_constant_visitor::visit(ir_expression *ir) } break; + case ir_unop_log2: + assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); + for (unsigned c = 0; c < ir->operands[0]->type->components(); c++) { + data.f[c] = log2f(op[0]->value.f[c]); + } + break; + case ir_unop_dFdx: case ir_unop_dFdy: assert(op[0]->type->base_type == GLSL_TYPE_FLOAT); -- 2.7.4