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/geometry/point.h"
11 #include "ui/gfx/geometry/size.h"
12
13 namespace cc {
14
TEST(ShaderTest,HighpThresholds)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
51