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//
// Copyright 2017 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// SamplerTest.cpp : Tests for samplers.
#include "test_utils/ANGLETest.h"
#include "test_utils/gl_raii.h"
namespace angle
{
class SamplersTest : public ANGLETest
{
protected:
SamplersTest() {}
// Sets a value for GL_TEXTURE_MAX_ANISOTROPY_EXT and expects it to fail.
void validateInvalidAnisotropy(GLSampler &sampler, float invalidValue)
{
glSamplerParameterf(sampler, GL_TEXTURE_MAX_ANISOTROPY_EXT, invalidValue);
EXPECT_GL_ERROR(GL_INVALID_VALUE);
}
// Sets a value for GL_TEXTURE_MAX_ANISOTROPY_EXT and expects it to work.
void validateValidAnisotropy(GLSampler &sampler, float validValue)
{
glSamplerParameterf(sampler, GL_TEXTURE_MAX_ANISOTROPY_EXT, validValue);
EXPECT_GL_NO_ERROR();
GLfloat valueToVerify = 0.0f;
glGetSamplerParameterfv(sampler, GL_TEXTURE_MAX_ANISOTROPY_EXT, &valueToVerify);
ASSERT_EQ(valueToVerify, validValue);
}
};
// Verify that samplerParameterf supports TEXTURE_MAX_ANISOTROPY_EXT valid values.
TEST_P(SamplersTest, ValidTextureSamplerMaxAnisotropyExt)
{
GLSampler sampler;
// Exact min
validateValidAnisotropy(sampler, 1.0f);
GLfloat maxValue = 0.0f;
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxValue);
// Max value
validateValidAnisotropy(sampler, maxValue - 1);
// In-between
GLfloat between = (1.0f + maxValue) / 2;
validateValidAnisotropy(sampler, between);
}
// Verify an error is thrown if we try to go under the minimum value for
// GL_TEXTURE_MAX_ANISOTROPY_EXT
TEST_P(SamplersTest, InvalidUnderTextureSamplerMaxAnisotropyExt)
{
GLSampler sampler;
// Under min
validateInvalidAnisotropy(sampler, 0.0f);
}
// Verify an error is thrown if we try to go over the max value for
// GL_TEXTURE_MAX_ANISOTROPY_EXT
TEST_P(SamplersTest, InvalidOverTextureSamplerMaxAnisotropyExt)
{
GLSampler sampler;
GLfloat maxValue = 0.0f;
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxValue);
maxValue += 1;
validateInvalidAnisotropy(sampler, maxValue);
}
// Use this to select which configurations (e.g. which renderer, which GLES major version) these
// tests should be run against.
// Samplers are only supported on ES3.
ANGLE_INSTANTIATE_TEST(SamplersTest, ES3_D3D11(), ES3_OPENGL(), ES3_OPENGLES(), ES3_VULKAN());
} // namespace angle