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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/output/shader.h"
#include "cc/test/test_gles2_interface.h"
#include "cc/test/test_web_graphics_context_3d.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/size.h"
namespace cc {
TEST(ShaderTest, HighpThresholds) {
// The test context always uses a mediump precision of 10 bits which
// corresponds to a native highp threshold of 2^10 = 1024
scoped_ptr<TestWebGraphicsContext3D> stub_context =
TestWebGraphicsContext3D::Create();
TestGLES2Interface stub_gl(stub_context.get());
int threshold_cache = 0;
int threshold_min;
gfx::Point closePoint(512, 512);
gfx::Size smallSize(512, 512);
gfx::Point farPoint(2560, 2560);
gfx::Size bigSize(2560, 2560);
threshold_min = 0;
EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
closePoint));
EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
smallSize));
EXPECT_EQ(TEX_COORD_PRECISION_HIGH,
TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
farPoint));
EXPECT_EQ(TEX_COORD_PRECISION_HIGH,
TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
bigSize));
threshold_min = 3000;
EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
closePoint));
EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
smallSize));
EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
farPoint));
EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
bigSize));
}
} // namespace cc
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