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/test/test_gles2_interface.h"
   8 #include "cc/test/test_web_graphics_context_3d.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10 #include "ui/gfx/point.h"
  11 #include "ui/gfx/size.h"
  12
  13 namespace cc {
  14
  15 TEST(ShaderTest, HighpThresholds) {
  16   // The test context always uses a mediump precision of 10 bits which
  17   // corresponds to a native highp threshold of 2^10 = 1024
  18   scoped_ptr<TestWebGraphicsContext3D> stub_context =
  19     TestWebGraphicsContext3D::Create();
  20   TestGLES2Interface stub_gl(stub_context.get());
  21
  22   int threshold_cache = 0;
  23   int threshold_min;
  24   gfx::Point closePoint(512, 512);
  25   gfx::Size smallSize(512, 512);
  26   gfx::Point farPoint(2560, 2560);
  27   gfx::Size bigSize(2560, 2560);
  28
  29   threshold_min = 0;
  30   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  31       &stub_gl, &threshold_cache, threshold_min, closePoint));
  32   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  33       &stub_gl, &threshold_cache, threshold_min, smallSize));
  34   EXPECT_EQ(TexCoordPrecisionHigh, TexCoordPrecisionRequired(
  35       &stub_gl, &threshold_cache, threshold_min, farPoint));
  36   EXPECT_EQ(TexCoordPrecisionHigh, TexCoordPrecisionRequired(
  37       &stub_gl, &threshold_cache, threshold_min, bigSize));
  38
  39   threshold_min = 3000;
  40   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  41       &stub_gl, &threshold_cache, threshold_min, closePoint));
  42   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  43       &stub_gl, &threshold_cache, threshold_min, smallSize));
  44   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  45       &stub_gl, &threshold_cache, threshold_min, farPoint));
  46   EXPECT_EQ(TexCoordPrecisionMedium, TexCoordPrecisionRequired(
  47       &stub_gl, &threshold_cache, threshold_min, bigSize));
  48 }
  49
  50 }  // namespace cc