+++ /dev/null
-/*
- * Copyright © 2013 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-/**
- * \file brw_lower_unnormalized_offset.cpp
- *
- * IR lower pass to convert a texture offset into an adjusted coordinate,
- * for use with unnormalized coordinates. At least the gather4* messages
- * on Ivybridge and Haswell make a mess with nonzero offsets.
- *
- * \author Chris Forbes <chrisf@ijw.co.nz>
- */
-
-#include "compiler/glsl_types.h"
-#include "compiler/glsl/ir.h"
-#include "compiler/glsl/ir_builder.h"
-
-using namespace ir_builder;
-
-class brw_lower_unnormalized_offset_visitor : public ir_hierarchical_visitor {
-public:
- brw_lower_unnormalized_offset_visitor()
- {
- progress = false;
- }
-
- ir_visitor_status visit_leave(ir_texture *ir);
-
- bool progress;
-};
-
-ir_visitor_status
-brw_lower_unnormalized_offset_visitor::visit_leave(ir_texture *ir)
-{
- if (!ir->offset)
- return visit_continue;
-
- if (ir->op == ir_tg4 || ir->op == ir_tex) {
- if (ir->sampler->type->sampler_dimensionality != GLSL_SAMPLER_DIM_RECT)
- return visit_continue;
- }
- else if (ir->op != ir_txf) {
- return visit_continue;
- }
-
- void *mem_ctx = ralloc_parent(ir);
-
- if (ir->op == ir_txf) {
- /* It appears that the ld instruction used for txf does its
- * address bounds check before adding in the offset. To work
- * around this, just add the integer offset to the integer texel
- * coordinate, and don't put the offset in the header.
- */
- ir_variable *var = new(mem_ctx) ir_variable(ir->coordinate->type,
- "coordinate",
- ir_var_temporary);
- base_ir->insert_before(var);
- base_ir->insert_before(assign(var, ir->coordinate));
- base_ir->insert_before(assign(var,
- add(swizzle_for_size(var, ir->offset->type->vector_elements), ir->offset),
- (1 << ir->offset->type->vector_elements) - 1));
-
- ir->coordinate = new(mem_ctx) ir_dereference_variable(var);
- } else {
- ir->coordinate = add(ir->coordinate, i2f(ir->offset));
- }
-
- ir->offset = NULL;
-
- progress = true;
- return visit_continue;
-}
-
-extern "C" {
-
-bool
-brw_do_lower_unnormalized_offset(exec_list *instructions)
-{
- brw_lower_unnormalized_offset_visitor v;
-
- visit_list_elements(&v, instructions);
-
- return v.progress;
-}
-
-}