//////////////////////////////////////////////////////////////////////////////////
/// OpenGL Image (gli.g-truc.net)
///
/// Copyright (c) 2008 - 2015 G-Truc Creation (www.g-truc.net)
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the "Software"), to deal
/// in the Software without restriction, including without limitation the rights
/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
/// copies of the Software, and to permit persons to whom the Software is
/// furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
/// THE SOFTWARE.
///
/// @ref core
/// @file gli/core/texture_cube_array.cpp
/// @date 2011-01-10 / 2013-11-25
/// @author Christophe Riccio
///////////////////////////////////////////////////////////////////////////////////

#include <gli/gli.hpp>

int test_alloc()
{
	int Error(0);

	std::vector<gli::format> Formats;
	Formats.push_back(gli::FORMAT_RGBA8_UNORM);
	Formats.push_back(gli::FORMAT_RGB8_UNORM);
	Formats.push_back(gli::FORMAT_R8_SNORM);
	Formats.push_back(gli::FORMAT_RGB_DXT1_UNORM);
	Formats.push_back(gli::FORMAT_RGB_BP_UNORM);
	Formats.push_back(gli::FORMAT_RGBA32_SFLOAT);

	std::vector<gli::textureCubeArray::dim_type::value_type> Sizes;
	Sizes.push_back(16);
	Sizes.push_back(32);
	Sizes.push_back(15);
	Sizes.push_back(17);
	Sizes.push_back(1);

	for(std::size_t FormatIndex = 0; FormatIndex < Formats.size(); ++FormatIndex)
	for(std::size_t SizeIndex = 0; SizeIndex < Sizes.size(); ++SizeIndex)
	{
		gli::textureCubeArray::dim_type Size(Sizes[SizeIndex]);

		gli::textureCubeArray TextureA(2, 6, gli::levels(Size), Formats[FormatIndex], Size);
		gli::textureCubeArray TextureB(2, 6, Formats[FormatIndex], Size);

		Error += TextureA == TextureB ? 0 : 1;
	}

	return Error;
}

int test_textureCubeArray_query()
{
	int Error(0);

	{
		gli::textureCubeArray Texture(1, 6, 2, gli::FORMAT_RGBA8_UINT, gli::textureCubeArray::dim_type(2));

		Error += Texture.size() == sizeof(glm::u8vec4) * 5 * 6 ? 0 : 1;
		Error += Texture.format() == gli::FORMAT_RGBA8_UINT ? 0 : 1;
		Error += Texture.levels() == 2 ? 0 : 1;
		Error += !Texture.empty() ? 0 : 1;
		Error += Texture.dimensions().x == 2 ? 0 : 1;
		Error += Texture.dimensions().y == 2 ? 0 : 1;
	}

	{
		gli::textureCubeArray Texture(4, 6, 2, gli::FORMAT_RGBA8_UINT, gli::textureCubeArray::dim_type(2));

		Error += Texture.size() == sizeof(glm::u8vec4) * 5 * 6 * 4 ? 0 : 1;
		Error += Texture.format() == gli::FORMAT_RGBA8_UINT ? 0 : 1;
		Error += Texture.levels() == 2 ? 0 : 1;
		Error += !Texture.empty() ? 0 : 1;
		Error += Texture.dimensions().x == 2 ? 0 : 1;
		Error += Texture.dimensions().y == 2 ? 0 : 1;
	}

	return Error;
}

int test_textureCubeArray_textureCube_access()
{
	int Error(0);

	{
		gli::textureCubeArray TextureCubeArray(2, 6, 1, gli::FORMAT_RGBA8_UINT, gli::textureCubeArray::dim_type(2));
		assert(!TextureCubeArray.empty());

		std::vector<glm::u8vec4> Colors;
		Colors.push_back(glm::u8vec4(255,   0,   0, 255));
		Colors.push_back(glm::u8vec4(  0,   0, 255, 255));

		gli::textureCube TextureCube = TextureCubeArray[1];
		glm::u8vec4* PointerA = TextureCube.data<glm::u8vec4>();
		glm::u8vec4* PointerB = TextureCubeArray.data<glm::u8vec4>() + TextureCube.size() / sizeof(glm::u8vec4);
		Error += PointerA == PointerB ? 0 : 1;
	}

	{
		gli::textureCube TextureCube(6, 2, gli::FORMAT_RGBA8_UINT, gli::textureCube::dim_type(2));
		assert(!TextureCube.empty());

		gli::texture2D TextureA = TextureCube[0];
		gli::texture2D TextureB = TextureCube[1];
		
		std::size_t Size0 = TextureA.size();
		std::size_t Size1 = TextureB.size();

		Error += Size0 == sizeof(glm::u8vec4) * 5 ? 0 : 1;
		Error += Size1 == sizeof(glm::u8vec4) * 5 ? 0 : 1;

		*TextureA.data<glm::u8vec4>() = glm::u8vec4(255, 127, 0, 255);
		*TextureB.data<glm::u8vec4>() = glm::u8vec4(0, 127, 255, 255);

		glm::u8vec4 * PointerA = TextureA.data<glm::u8vec4>();
		glm::u8vec4 * PointerB = TextureB.data<glm::u8vec4>();

		glm::u8vec4 * Pointer0 = TextureCube.data<glm::u8vec4>() + 0;
		glm::u8vec4 * Pointer1 = TextureCube.data<glm::u8vec4>() + 5;

		Error += PointerA == Pointer0 ? 0 : 1;
		Error += PointerB == Pointer1 ? 0 : 1;

		glm::u8vec4 ColorA = *TextureA.data<glm::u8vec4>();
		glm::u8vec4 ColorB = *TextureB.data<glm::u8vec4>();

		glm::u8vec4 Color0 = *Pointer0;
		glm::u8vec4 Color1 = *Pointer1;

		Error += glm::all(glm::equal(Color0, glm::u8vec4(255, 127, 0, 255))) ? 0 : 1;
		Error += glm::all(glm::equal(Color1, glm::u8vec4(0, 127, 255, 255))) ? 0 : 1;
	}

	{
		gli::textureCube TextureCube(1, 1, gli::FORMAT_RGBA8_UINT, gli::textureCube::dim_type(2));

		std::size_t SizeA = TextureCube.size();
		Error += SizeA == sizeof(glm::u8vec4) * 4 ? 0 : 1;

		gli::texture2D Texture2D = TextureCube[0];
		
		std::size_t Size0 = Texture2D.size();
		Error += Size0 == sizeof(glm::u8vec4) * 4 ? 0 : 1;

		*Texture2D.data<glm::u8vec4>() = glm::u8vec4(255, 127, 0, 255);

		glm::u8vec4 * PointerA = Texture2D.data<glm::u8vec4>();
		glm::u8vec4 * Pointer0 = TextureCube.data<glm::u8vec4>();
		Error += PointerA == Pointer0 ? 0 : 1;

		glm::u8vec4 ColorA = *PointerA;
		glm::u8vec4 Color0 = *Pointer0;
		Error += glm::all(glm::equal(ColorA, glm::u8vec4(255, 127, 0, 255))) ? 0 : 1;
		Error += glm::all(glm::equal(Color0, glm::u8vec4(255, 127, 0, 255))) ? 0 : 1;
	}

	return Error;
}

struct test
{
	test(
		gli::format const & Format,
		gli::textureCube::dim_type const & Dimensions,
		gli::textureCube::size_type const & Size) :
		Format(Format),
		Dimensions(Dimensions),
		Size(Size)
	{}

	gli::format Format;
	gli::textureCube::dim_type Dimensions;
	gli::textureCube::size_type Size;
};

int test_textureCubeArray_textureCube_size()
{
	int Error(0);

	std::vector<test> Tests;
	Tests.push_back(test(gli::FORMAT_RGBA8_UINT, gli::textureCube::dim_type(4), 384 * 4));
	Tests.push_back(test(gli::FORMAT_R8_UINT, gli::textureCube::dim_type(4), 96 * 4));
	Tests.push_back(test(gli::FORMAT_RGBA_DXT1_UNORM, gli::textureCube::dim_type(4), 48 * 4));
	Tests.push_back(test(gli::FORMAT_RGBA_DXT1_UNORM, gli::textureCube::dim_type(2), 48 * 4));
	Tests.push_back(test(gli::FORMAT_RGBA_DXT1_UNORM, gli::textureCube::dim_type(1), 48 * 4));
	Tests.push_back(test(gli::FORMAT_RGBA_DXT5_UNORM, gli::textureCube::dim_type(4), 96 * 4));

	for(std::size_t i = 0; i < Tests.size(); ++i)
	{
		gli::textureCubeArray Texture(
			4,
			6,
			gli::textureCube::size_type(1),
			Tests[i].Format,
			gli::textureCube::dim_type(4));

		gli::textureCubeArray::size_type Size = Texture.size();
		Error += Size == Tests[i].Size ? 0 : 1;
		assert(!Error);
	}

	return Error;
}

namespace clear
{
	int run()
	{
		int Error(0);

		glm::u8vec4 const Orange(255, 127, 0, 255);

		gli::textureCubeArray Texture(
			4,
			6,
			gli::textureCubeArray::size_type(1),
			gli::FORMAT_RGBA8_UINT,
			gli::textureCubeArray::dim_type(4));

		Texture.clear<glm::u8vec4>(Orange);

		return Error;
	}
}//namespace

int main()
{
	int Error(0);

	Error += test_alloc();
	Error += test_textureCubeArray_textureCube_size();
	Error += test_textureCubeArray_query();
	Error += test_textureCubeArray_textureCube_access();
	Error += clear::run();

	return Error;
}

