glsl: Refactor part of convert_vec_index_to_cond_assign
Use a first function that extract the vector being indexed and the index from the deref. Call the second function that does the real work. Coming patches will add a new ir_expression for variable indexing into a vector. Having the lowering pass split into two functions will make it much easier to lower the new ir_expression. v2: Convert tabs to spaces. Suggested by Eric. v3: Move some bits from a later patch back to this patch so that it actually compiles. Suggested by Ken. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com> Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
parent
dafd6918f3
commit
63e1147ea1
|
@ -53,6 +53,10 @@ public:
|
|||
}
|
||||
|
||||
ir_rvalue *convert_vec_index_to_cond_assign(ir_rvalue *val);
|
||||
ir_rvalue *convert_vec_index_to_cond_assign(void *mem_ctx,
|
||||
ir_rvalue *orig_vector,
|
||||
ir_rvalue *orig_index,
|
||||
const glsl_type *type);
|
||||
|
||||
virtual ir_visitor_status visit_enter(ir_expression *);
|
||||
virtual ir_visitor_status visit_enter(ir_swizzle *);
|
||||
|
@ -65,24 +69,16 @@ public:
|
|||
};
|
||||
|
||||
ir_rvalue *
|
||||
ir_vec_index_to_cond_assign_visitor::convert_vec_index_to_cond_assign(ir_rvalue *ir)
|
||||
ir_vec_index_to_cond_assign_visitor::convert_vec_index_to_cond_assign(void *mem_ctx,
|
||||
ir_rvalue *orig_vector,
|
||||
ir_rvalue *orig_index,
|
||||
const glsl_type *type)
|
||||
{
|
||||
ir_dereference_array *orig_deref = ir->as_dereference_array();
|
||||
ir_assignment *assign, *value_assign;
|
||||
ir_variable *index, *var, *value;
|
||||
ir_dereference *deref, *deref_value;
|
||||
unsigned i;
|
||||
|
||||
if (!orig_deref)
|
||||
return ir;
|
||||
|
||||
if (orig_deref->array->type->is_matrix() ||
|
||||
orig_deref->array->type->is_array())
|
||||
return ir;
|
||||
|
||||
void *mem_ctx = ralloc_parent(ir);
|
||||
|
||||
assert(orig_deref->array_index->type->base_type == GLSL_TYPE_INT);
|
||||
|
||||
exec_list list;
|
||||
|
||||
|
@ -92,19 +88,19 @@ ir_vec_index_to_cond_assign_visitor::convert_vec_index_to_cond_assign(ir_rvalue
|
|||
ir_var_temporary);
|
||||
list.push_tail(index);
|
||||
deref = new(base_ir) ir_dereference_variable(index);
|
||||
assign = new(base_ir) ir_assignment(deref, orig_deref->array_index, NULL);
|
||||
assign = new(base_ir) ir_assignment(deref, orig_index, NULL);
|
||||
list.push_tail(assign);
|
||||
|
||||
/* Store the value inside a temp, thus avoiding matrixes duplication */
|
||||
value = new(base_ir) ir_variable(orig_deref->array->type, "vec_value_tmp",
|
||||
ir_var_temporary);
|
||||
value = new(base_ir) ir_variable(orig_vector->type, "vec_value_tmp",
|
||||
ir_var_temporary);
|
||||
list.push_tail(value);
|
||||
deref_value = new(base_ir) ir_dereference_variable(value);
|
||||
value_assign = new(base_ir) ir_assignment(deref_value, orig_deref->array);
|
||||
value_assign = new(base_ir) ir_assignment(deref_value, orig_vector);
|
||||
list.push_tail(value_assign);
|
||||
|
||||
/* Temporary where we store whichever value we swizzle out. */
|
||||
var = new(base_ir) ir_variable(ir->type, "vec_index_tmp_v",
|
||||
var = new(base_ir) ir_variable(type, "vec_index_tmp_v",
|
||||
ir_var_temporary);
|
||||
list.push_tail(var);
|
||||
|
||||
|
@ -113,13 +109,14 @@ ir_vec_index_to_cond_assign_visitor::convert_vec_index_to_cond_assign(ir_rvalue
|
|||
*/
|
||||
ir_rvalue *const cond_deref =
|
||||
compare_index_block(&list, index, 0,
|
||||
orig_deref->array->type->vector_elements,
|
||||
orig_vector->type->vector_elements,
|
||||
mem_ctx);
|
||||
|
||||
/* Generate a conditional move of each vector element to the temp. */
|
||||
for (i = 0; i < orig_deref->array->type->vector_elements; i++) {
|
||||
for (i = 0; i < orig_vector->type->vector_elements; i++) {
|
||||
ir_rvalue *condition_swizzle =
|
||||
new(base_ir) ir_swizzle(cond_deref->clone(ir, NULL), i, 0, 0, 0, 1);
|
||||
new(base_ir) ir_swizzle(cond_deref->clone(mem_ctx, NULL),
|
||||
i, 0, 0, 0, 1);
|
||||
|
||||
/* Just clone the rest of the deref chain when trying to get at the
|
||||
* underlying variable.
|
||||
|
@ -142,6 +139,26 @@ ir_vec_index_to_cond_assign_visitor::convert_vec_index_to_cond_assign(ir_rvalue
|
|||
return new(base_ir) ir_dereference_variable(var);
|
||||
}
|
||||
|
||||
ir_rvalue *
|
||||
ir_vec_index_to_cond_assign_visitor::convert_vec_index_to_cond_assign(ir_rvalue *ir)
|
||||
{
|
||||
ir_dereference_array *orig_deref = ir->as_dereference_array();
|
||||
|
||||
if (!orig_deref)
|
||||
return ir;
|
||||
|
||||
if (orig_deref->array->type->is_matrix() ||
|
||||
orig_deref->array->type->is_array())
|
||||
return ir;
|
||||
|
||||
assert(orig_deref->array_index->type->base_type == GLSL_TYPE_INT);
|
||||
|
||||
return convert_vec_index_to_cond_assign(ralloc_parent(ir),
|
||||
orig_deref->array,
|
||||
orig_deref->array_index,
|
||||
ir->type);
|
||||
}
|
||||
|
||||
ir_visitor_status
|
||||
ir_vec_index_to_cond_assign_visitor::visit_enter(ir_expression *ir)
|
||||
{
|
||||
|
|
Loading…
Reference in New Issue