cc/output/shader_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/output/shader.h"
   6
   7 #include "cc/debug/fake_web_graphics_context_3d.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9 #include "ui/gfx/point.h"
  10 #include "ui/gfx/size.h"
  11
  12 namespace cc {
  13
  14 TEST(ShaderTest, HighpThresholds) {
  15   // The FakeWebGraphicsContext3D always uses a mediump precision of 10 bits
  16   // which corresponds to a native highp threshold of 2^10 = 1024
  17   FakeWebGraphicsContext3D context;
  18
  19   int threshold_cache = 0;
  20   int threshold_min;
  21   gfx::Point closePoint(512, 512);
  22   gfx::Size smallSize(512, 512);
  23   gfx::Point farPoint(2560, 2560);
  24   gfx::Size bigSize(2560, 2560);
  25
  26   threshold_min = 0;
  27   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  28       &context, &threshold_cache, threshold_min, closePoint));
  29   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  30       &context, &threshold_cache, threshold_min, smallSize));
  31   EXPECT_EQ(TexCoordPrecisionHigh, TexCoordPrecisionRequired(
  32       &context, &threshold_cache, threshold_min, farPoint));
  33   EXPECT_EQ(TexCoordPrecisionHigh, TexCoordPrecisionRequired(
  34       &context, &threshold_cache, threshold_min, bigSize));
  35
  36   threshold_min = 3000;
  37   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  38       &context, &threshold_cache, threshold_min, closePoint));
  39   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  40       &context, &threshold_cache, threshold_min, smallSize));
  41   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  42       &context, &threshold_cache, threshold_min, farPoint));
  43   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  44       &context, &threshold_cache, threshold_min, bigSize));
  45 }
  46
  47 }  // namespace cc