///////////////////////////////////////////////////////////////////////////////////
/// 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 test/core/texture_1d.cpp
/// @date 2013-01-12 / 2013-01-12
/// @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<std::size_t> 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::texture1D::dim_type Size(Sizes[SizeIndex]);

		gli::texture1D TextureA(gli::levels(Size), Formats[FormatIndex], Size);
		gli::texture1D TextureB(Formats[FormatIndex], Size);

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

	return Error;
}

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

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

		gli::texture1D::dim_type Size(16u);
		gli::texture1D Texture(gli::levels(Size), gli::FORMAT_RGBA8_UINT, Size);

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

		return Error;
	}
}//namespace

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

		gli::texture1D Texture(2, gli::FORMAT_RGBA8_UINT, gli::texture1D::dim_type(2));

		Error += Texture.size() == sizeof(glm::u8vec4) * 3 ? 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() == static_cast<gli::dim1_t>(2) ? 0 : 1;

		return Error;
	}
}//namespace

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

		{
			gli::texture1D Texture(2, gli::FORMAT_RGBA8_UINT, gli::texture1D::dim_type(2));
			assert(!Texture.empty());

			gli::image Image0 = Texture[0];
			gli::image Image1 = Texture[1];

			std::size_t Size0 = Image0.size();
			std::size_t Size1 = Image1.size();

			Error += Size0 == sizeof(glm::u8vec4) * 2 ? 0 : 1;
			Error += Size1 == sizeof(glm::u8vec4) * 1 ? 0 : 1;

			*Image0.data<glm::u8vec4>() = glm::u8vec4(255, 127, 0, 255);
			*Image1.data<glm::u8vec4>() = glm::u8vec4(0, 127, 255, 255);

			glm::u8vec4 * PointerA = Image0.data<glm::u8vec4>();
			glm::u8vec4 * PointerB = Image1.data<glm::u8vec4>();

			glm::u8vec4 * Pointer0 = Texture.data<glm::u8vec4>() + 0;
			glm::u8vec4 * Pointer1 = Texture.data<glm::u8vec4>() + 2;

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

			glm::u8vec4 ColorA = *Image0.data<glm::u8vec4>();
			glm::u8vec4 ColorB = *Image1.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::texture1D Texture(1, gli::FORMAT_RGBA8_UINT, gli::texture1D::dim_type(2));

			std::size_t SizeA = Texture.size();
			Error += SizeA == sizeof(glm::u8vec4) * 2 ? 0 : 1;

			gli::image Image0 = Texture[0];

			std::size_t Size0 = Image0.size();
			Error += Size0 == sizeof(glm::u8vec4) * 2 ? 0 : 1;

			*Image0.data<glm::u8vec4>() = glm::u8vec4(255, 127, 0, 255);

			glm::u8vec4 * PointerA = Image0.data<glm::u8vec4>();
			glm::u8vec4 * Pointer0 = Texture.data<glm::u8vec4>() + 0;
			Error += PointerA == Pointer0 ? 0 : 1;

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

		return Error;
	}
}//namespace

namespace size
{
	struct test
	{
		test(
			gli::format const & Format,
			gli::texture1D::dim_type const & Dimensions,
			gli::texture1D::size_type const & Size) :
			Format(Format),
			Dimensions(Dimensions),
			Size(Size)
		{}

		gli::format Format;
		gli::texture1D::dim_type Dimensions;
		gli::texture1D::size_type Size;
	};

	int run()
	{
		int Error(0);

		std::vector<test> Tests;
		Tests.push_back(test(gli::FORMAT_RGBA8_UINT, gli::texture1D::dim_type(4), 16));
		Tests.push_back(test(gli::FORMAT_R8_UINT, gli::texture1D::dim_type(4), 4));

		for(std::size_t i = 0; i < Tests.size(); ++i)
		{
			gli::texture1D Texture(
				gli::texture1D::size_type(1),
				Tests[i].Format,
				gli::texture1D::dim_type(4));

			gli::image Image = Texture[0];

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

		return Error;
	}
}//namespace size

int main()
{
	int Error(0);

	Error += test_alloc();
	Error += size::run();
	Error += query::run();
	Error += clear::run();
	Error += tex_access::run();

	return Error;
}

