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glsl2: Constant fold the children of many more ir_instruction types.

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This commit is contained in:
Eric Anholt
2010-08-04 16:18:18 -07:00
parent 6ecf62f673
commit 8dbdcb0b43
1 changed files with 32 additions and 7 deletions
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39
src/glsl/ir_constant_folding.cpp
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@@ -82,7 +82,7 @@ public:
void
ir_constant_folding_visitor::fold_constant(ir_rvalue **rvalue)
{
if ((*rvalue)->ir_type == ir_type_constant)
if (*rvalue == NULL || (*rvalue)->ir_type == ir_type_constant)
return;
ir_constant *constant = (*rvalue)->constant_expression_value();
@@ -131,15 +131,32 @@ ir_constant_folding_visitor::visit(ir_expression *ir)
void
ir_constant_folding_visitor::visit(ir_texture *ir)
{
// FINISHME: Do stuff with texture lookups
(void) ir;
fold_constant(&ir->coordinate);
fold_constant(&ir->projector);
fold_constant(&ir->shadow_comparitor);
switch (ir->op) {
case ir_tex:
break;
case ir_txb:
fold_constant(&ir->lod_info.bias);
break;
case ir_txf:
case ir_txl:
fold_constant(&ir->lod_info.lod);
break;
case ir_txd:
fold_constant(&ir->lod_info.grad.dPdx);
fold_constant(&ir->lod_info.grad.dPdy);
break;
}
}
void
ir_constant_folding_visitor::visit(ir_swizzle *ir)
{
ir->val->accept(this);
fold_constant(&ir->val);
}
@@ -180,8 +197,8 @@ ir_constant_folding_visitor::visit(ir_assignment *ir)
ir->condition = NULL;
else
ir->remove();
this->progress = true;
}
this->progress = true;
}
}
@@ -196,14 +213,22 @@ ir_constant_folding_visitor::visit(ir_constant *ir)
void
ir_constant_folding_visitor::visit(ir_call *ir)
{
(void) ir;
foreach_iter(exec_list_iterator, iter, *ir) {
ir_rvalue *param = (ir_rvalue *)iter.get();
ir_rvalue *new_param = param;
fold_constant(&new_param);
if (new_param != param) {
param->replace_with(new_param);
}
}
}
void
ir_constant_folding_visitor::visit(ir_return *ir)
{
(void) ir;
fold_constant(&ir->value);
}