/*-------------------------------------------------------------------------
 * drawElements Quality Program OpenGL ES 3.0 Module
 * -------------------------------------------------
 *
 * Copyright 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *//*!
 * \file
 * \brief Texture filtering performance tests.
 *//*--------------------------------------------------------------------*/

#include "es3pTextureFilteringTests.hpp"
#include "es3pTextureCases.hpp"
#include "tcuMatrixUtil.hpp"

#include "glwEnums.hpp"

using std::string;

namespace deqp
{
namespace gles3
{
namespace Performance
{

TextureFilteringTests::TextureFilteringTests (Context& context)
	: TestCaseGroup(context, "filter", "Texture Filtering Performance Tests")
{
}

TextureFilteringTests::~TextureFilteringTests (void)
{
}

void TextureFilteringTests::init (void)
{
	static const struct
	{
		const char*	name;
		deUint32	internalFormat;
	} texFormats[] =
	{
		{ "rgb565",		GL_RGB565	},
		{ "rgba8",		GL_RGBA8	},
		{ "rg16f",		GL_RG16F	},
		{ "rgba16f",	GL_RGBA16F	}
	};
	static const struct
	{
		const char*	name;
		deUint32	filter;
		bool		minify;
	} cases[] =
	{
		{ "nearest",				GL_NEAREST,					true	},
		{ "nearest",				GL_NEAREST,					false	},
		{ "linear",					GL_LINEAR,					true	},
		{ "linear",					GL_LINEAR,					false	},
		{ "nearest_mipmap_nearest",	GL_NEAREST_MIPMAP_NEAREST,	true	},
		{ "nearest_mipmap_linear",	GL_NEAREST_MIPMAP_LINEAR,	true	},
		{ "linear_mipmap_nearest",	GL_LINEAR_MIPMAP_NEAREST,	true	},
		{ "linear_mipmap_linear",	GL_LINEAR_MIPMAP_LINEAR,	true	}
	};

	tcu::Mat3 minTransform	= tcu::translationMatrix(tcu::Vec2(-0.3f, -0.6f)) * tcu::Mat3(tcu::Vec3(1.7f, 2.3f, 1.0f));
	tcu::Mat3 magTransform	= tcu::translationMatrix(tcu::Vec2( 0.3f,  0.4f)) * tcu::Mat3(tcu::Vec3(0.3f, 0.2f, 1.0f));

	for (int caseNdx = 0; caseNdx < DE_LENGTH_OF_ARRAY(cases); caseNdx++)
	{
		for (int formatNdx = 0; formatNdx < DE_LENGTH_OF_ARRAY(texFormats); formatNdx++)
		{
			deUint32	format		= texFormats[formatNdx].internalFormat;
			deUint32	minFilter	= cases[caseNdx].filter;
			deUint32	magFilter	= (minFilter == GL_NEAREST || minFilter == GL_LINEAR) ? minFilter : GL_LINEAR;
			deUint32	wrapS		= GL_REPEAT;
			deUint32	wrapT		= GL_REPEAT;
			int			numTextures	= 1;
			bool		minify		= cases[caseNdx].minify;
			string		name		= string(cases[caseNdx].name) + (minify ? "_minify_" : "_magnify_") + texFormats[formatNdx].name;

			addChild(new Texture2DRenderCase(m_context, name.c_str(), "", format, wrapS, wrapT, minFilter, magFilter, minify ? minTransform : magTransform, numTextures, true /* pot */));
		}
	}
}

} // Performance
} // gles3
} // deqp