test_fs_cmod_propagation.cpp - Android社区 - https://www.androidos.net.cn/

/*
 * Copyright © 2015 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.
 */

#include <gtest/gtest.h>
#include "brw_fs.h"
#include "brw_cfg.h"
#include "program/program.h"

using namespace brw;

class cmod_propagation_test : public ::testing::Test {
   virtual void SetUp();

public:
   struct brw_compiler *compiler;
   struct gen_device_info *devinfo;
   struct gl_context *ctx;
   struct brw_wm_prog_data *prog_data;
   struct gl_shader_program *shader_prog;
   fs_visitor *v;
};

class cmod_propagation_fs_visitor : public fs_visitor
{
public:
   cmod_propagation_fs_visitor(struct brw_compiler *compiler,
                               struct brw_wm_prog_data *prog_data,
                               nir_shader *shader)
      : fs_visitor(compiler, NULL, NULL, NULL,
                   &prog_data->base, (struct gl_program *) NULL,
                   shader, 8, -1) {}
};

void cmod_propagation_test::SetUp()
{
   ctx = (struct gl_context *)calloc(1, sizeof(*ctx));
   compiler = (struct brw_compiler *)calloc(1, sizeof(*compiler));
   devinfo = (struct gen_device_info *)calloc(1, sizeof(*devinfo));
   compiler->devinfo = devinfo;

prog_data = ralloc(NULL, struct brw_wm_prog_data);
   nir_shader *shader =
      nir_shader_create(NULL, MESA_SHADER_FRAGMENT, NULL, NULL);

v = new cmod_propagation_fs_visitor(compiler, prog_data, shader);

devinfo->gen = 4;
}

static fs_inst *
instruction(bblock_t *block, int num)
{
   fs_inst *inst = (fs_inst *)block->start();
   for (int i = 0; i < num; i++) {
      inst = (fs_inst *)inst->next;
   }
   return inst;
}

static bool
cmod_propagation(fs_visitor *v)
{
   const bool print = getenv("TEST_DEBUG");

if (print) {
      fprintf(stderr, "= Before =\n");
      v->cfg->dump(v);
   }

bool ret = v->opt_cmod_propagation();

if (print) {
      fprintf(stderr, "\n= After =\n");
      v->cfg->dump(v);
   }

return ret;
}

TEST_F(cmod_propagation_test, basic)
{
   const fs_builder &bld = v->bld;
   fs_reg dest = v->vgrf(glsl_type::float_type);
   fs_reg src0 = v->vgrf(glsl_type::float_type);
   fs_reg src1 = v->vgrf(glsl_type::float_type);
   fs_reg zero(brw_imm_f(0.0f));
   bld.ADD(dest, src0, src1);
   bld.CMP(bld.null_reg_f(), dest, zero, BRW_CONDITIONAL_GE);

/* = Before =
    *
    * 0: add(8)        dest  src0  src1
    * 1: cmp.ge.f0(8)  null  dest  0.0f
    *
    * = After =
    * 0: add.ge.f0(8)  dest  src0  src1
    */