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      1 /*
      2  * Copyright 2017 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SkRasterPipeline.h"
      9 #include "Test.h"
     10 #include "../src/jumper/SkJumper.h"
     11 
     12 DEF_TEST(F16Stages, r) {
     13     // Make sure SkRasterPipeline::load_f16 and store_f16 can handle a range of
     14     // ordinary (0<=x<=1) and interesting (x<0, x>1) values.
     15     float floats[16] = {
     16         0.0f, 0.25f, 0.5f, 1.0f,
     17         -1.25f, -0.5f, 1.25f, 2.0f,
     18         0,0,0,0, 0,0,0,0,  // pad a bit to make sure we qualify for platform-specific code
     19     };
     20     uint64_t halfs[4] = {0,0,0,0};
     21 
     22     SkJumper_MemoryCtx f32 = { floats, 0 },
     23                        f16 = { halfs,  0 };
     24 
     25     {
     26         SkRasterPipeline_<256> p;
     27         p.append(SkRasterPipeline:: load_f32, &f32);
     28         p.append(SkRasterPipeline::store_f16, &f16);
     29         p.run(0,0,16/4,1);
     30     }
     31     REPORTER_ASSERT(r, ((halfs[0] >>  0) & 0xffff) == 0x0000);
     32     REPORTER_ASSERT(r, ((halfs[0] >> 16) & 0xffff) == 0x3400);
     33     REPORTER_ASSERT(r, ((halfs[0] >> 32) & 0xffff) == 0x3800);
     34     REPORTER_ASSERT(r, ((halfs[0] >> 48) & 0xffff) == 0x3c00);
     35     REPORTER_ASSERT(r, ((halfs[1] >>  0) & 0xffff) == 0xbd00);
     36     REPORTER_ASSERT(r, ((halfs[1] >> 16) & 0xffff) == 0xb800);
     37     REPORTER_ASSERT(r, ((halfs[1] >> 32) & 0xffff) == 0x3d00);
     38     REPORTER_ASSERT(r, ((halfs[1] >> 48) & 0xffff) == 0x4000);
     39 
     40     {
     41         SkRasterPipeline_<256> p;
     42         p.append(SkRasterPipeline:: load_f16, &f16);
     43         p.append(SkRasterPipeline::store_f32, &f32);
     44         p.run(0,0,16/4,1);
     45     }
     46     REPORTER_ASSERT(r, floats[0] ==  0.00f);
     47     REPORTER_ASSERT(r, floats[1] ==  0.25f);
     48     REPORTER_ASSERT(r, floats[2] ==  0.50f);
     49     REPORTER_ASSERT(r, floats[3] ==  1.00f);
     50     REPORTER_ASSERT(r, floats[4] == -1.25f);
     51     REPORTER_ASSERT(r, floats[5] == -0.50f);
     52     REPORTER_ASSERT(r, floats[6] ==  1.25f);
     53     REPORTER_ASSERT(r, floats[7] ==  2.00f);
     54 }
     55