glsl2: Add a pass to convert exp and log to exp2 and log2.
Fixes ir_to_mesa handling of unop_log, which used the weird ARB_vp LOG
opcode that doesn't do what we want. This also lets the multiplication
coefficients in there get constant-folded, possibly.
Fixes:
glsl-fs-log
diff --git a/src/glsl/ir_validate.cpp b/src/glsl/ir_validate.cpp
index 701bf21..545fe27 100644
--- a/src/glsl/ir_validate.cpp
+++ b/src/glsl/ir_validate.cpp
@@ -183,10 +183,14 @@
case ir_unop_rcp:
case ir_unop_rsq:
case ir_unop_sqrt:
+ assert(ir->type == ir->operands[0]->type);
+ break;
+
case ir_unop_exp:
case ir_unop_log:
case ir_unop_exp2:
case ir_unop_log2:
+ assert(ir->operands[0]->type->base_type == GLSL_TYPE_FLOAT);
assert(ir->type == ir->operands[0]->type);
break;