/*------------------------------------------------------------------------
 * Vulkan Conformance Tests
 * ------------------------
 *
 * Copyright (c) 2015 The Khronos Group Inc.
 * Copyright (c) 2015 Intel Corporation
 *
 * 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 Dynamic Raster State Tests
 *//*--------------------------------------------------------------------*/

#include "vktDynamicStateRSTests.hpp"

#include "vktDynamicStateBaseClass.hpp"
#include "vktDynamicStateTestCaseUtil.hpp"

#include "vkImageUtil.hpp"
#include "vkTypeUtil.hpp"
#include "vkCmdUtil.hpp"

#include "tcuTextureUtil.hpp"
#include "tcuImageCompare.hpp"
#include "tcuRGBA.hpp"

#include "deMath.h"

namespace vkt
{
namespace DynamicState
{

using namespace Draw;

namespace
{

class DepthBiasBaseCase : public TestInstance
{
public:
	DepthBiasBaseCase (Context& context, const char* vertexShaderName, const char* fragmentShaderName)
		: TestInstance						(context)
		, m_colorAttachmentFormat			(vk::VK_FORMAT_R8G8B8A8_UNORM)
		, m_depthStencilAttachmentFormat	(vk::VK_FORMAT_UNDEFINED)
		, m_topology						(vk::VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP)
		, m_vk								(context.getDeviceInterface())
		, m_vertexShaderName				(vertexShaderName)
		, m_fragmentShaderName				(fragmentShaderName)
	{
	}

protected:

	enum
	{
		WIDTH	= 128,
		HEIGHT	= 128
	};

	vk::VkFormat									m_colorAttachmentFormat;
	vk::VkFormat									m_depthStencilAttachmentFormat;

	vk::VkPrimitiveTopology							m_topology;

	const vk::DeviceInterface&						m_vk;

	vk::Move<vk::VkPipeline>						m_pipeline;
	vk::Move<vk::VkPipelineLayout>					m_pipelineLayout;

	de::SharedPtr<Image>							m_colorTargetImage;
	vk::Move<vk::VkImageView>						m_colorTargetView;

	de::SharedPtr<Image>							m_depthStencilImage;
	vk::Move<vk::VkImageView>						m_attachmentView;

	PipelineCreateInfo::VertexInputState			m_vertexInputState;
	de::SharedPtr<Buffer>							m_vertexBuffer;

	vk::Move<vk::VkCommandPool>						m_cmdPool;
	vk::Move<vk::VkCommandBuffer>					m_cmdBuffer;

	vk::Move<vk::VkFramebuffer>						m_framebuffer;
	vk::Move<vk::VkRenderPass>						m_renderPass;

	std::string										m_vertexShaderName;
	std::string										m_fragmentShaderName;

	std::vector<PositionColorVertex>				m_data;

	PipelineCreateInfo::DepthStencilState			m_depthStencilState;

	void initialize (void)
	{
		const vk::VkDevice device	= m_context.getDevice();

		vk::VkFormatProperties formatProperties;
		// check for VK_FORMAT_D24_UNORM_S8_UINT support
		m_context.getInstanceInterface().getPhysicalDeviceFormatProperties(m_context.getPhysicalDevice(), vk::VK_FORMAT_D24_UNORM_S8_UINT, &formatProperties);
		if (formatProperties.optimalTilingFeatures & vk::VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)
		{
			m_depthStencilAttachmentFormat = vk::VK_FORMAT_D24_UNORM_S8_UINT;
		}
		else
		{
			// check for VK_FORMAT_D32_SFLOAT_S8_UINT support
			m_context.getInstanceInterface().getPhysicalDeviceFormatProperties(m_context.getPhysicalDevice(), vk::VK_FORMAT_D32_SFLOAT_S8_UINT, &formatProperties);
			if (formatProperties.optimalTilingFeatures & vk::VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)
			{
				m_depthStencilAttachmentFormat = vk::VK_FORMAT_D32_SFLOAT_S8_UINT;
			}
			else
				throw tcu::NotSupportedError("No valid depth stencil attachment available");
		}

		const PipelineLayoutCreateInfo pipelineLayoutCreateInfo;
		m_pipelineLayout			= vk::createPipelineLayout(m_vk, device, &pipelineLayoutCreateInfo);

		const vk::Unique<vk::VkShaderModule> vs(createShaderModule(m_vk, device, m_context.getBinaryCollection().get(m_vertexShaderName), 0));
		const vk::Unique<vk::VkShaderModule> fs(createShaderModule(m_vk, device, m_context.getBinaryCollection().get(m_fragmentShaderName), 0));

		const vk::VkExtent3D imageExtent = { WIDTH, HEIGHT, 1 };
		ImageCreateInfo targetImageCreateInfo(vk::VK_IMAGE_TYPE_2D, m_colorAttachmentFormat, imageExtent, 1, 1, vk::VK_SAMPLE_COUNT_1_BIT, vk::VK_IMAGE_TILING_OPTIMAL,
											  vk::VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | vk::VK_IMAGE_USAGE_TRANSFER_SRC_BIT | vk::VK_IMAGE_USAGE_TRANSFER_DST_BIT);

		m_colorTargetImage = Image::createAndAlloc(m_vk, device, targetImageCreateInfo, m_context.getDefaultAllocator(), m_context.getUniversalQueueFamilyIndex());

		const ImageCreateInfo depthStencilImageCreateInfo(vk::VK_IMAGE_TYPE_2D, m_depthStencilAttachmentFormat, imageExtent,
														  1, 1, vk::VK_SAMPLE_COUNT_1_BIT, vk::VK_IMAGE_TILING_OPTIMAL,
														  vk::VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | vk::VK_IMAGE_USAGE_TRANSFER_DST_BIT);

		m_depthStencilImage = Image::createAndAlloc(m_vk, device, depthStencilImageCreateInfo, m_context.getDefaultAllocator(), m_context.getUniversalQueueFamilyIndex());

		const ImageViewCreateInfo colorTargetViewInfo(m_colorTargetImage->object(), vk::VK_IMAGE_VIEW_TYPE_2D, m_colorAttachmentFormat);
		m_colorTargetView = vk::createImageView(m_vk, device, &colorTargetViewInfo);

		const ImageViewCreateInfo attachmentViewInfo(m_depthStencilImage->object(), vk::VK_IMAGE_VIEW_TYPE_2D, m_depthStencilAttachmentFormat);
		m_attachmentView = vk::createImageView(m_vk, device, &attachmentViewInfo);

		RenderPassCreateInfo renderPassCreateInfo;
		renderPassCreateInfo.addAttachment(AttachmentDescription(m_colorAttachmentFormat,
																 vk::VK_SAMPLE_COUNT_1_BIT,
																 vk::VK_ATTACHMENT_LOAD_OP_LOAD,
																 vk::VK_ATTACHMENT_STORE_OP_STORE,
																 vk::VK_ATTACHMENT_LOAD_OP_DONT_CARE,
																 vk::VK_ATTACHMENT_STORE_OP_STORE,
																 vk::VK_IMAGE_LAYOUT_GENERAL,
																 vk::VK_IMAGE_LAYOUT_GENERAL));

		renderPassCreateInfo.addAttachment(AttachmentDescription(m_depthStencilAttachmentFormat,
																 vk::VK_SAMPLE_COUNT_1_BIT,
																 vk::VK_ATTACHMENT_LOAD_OP_LOAD,
																 vk::VK_ATTACHMENT_STORE_OP_STORE,
																 vk::VK_ATTACHMENT_LOAD_OP_DONT_CARE,
																 vk::VK_ATTACHMENT_STORE_OP_STORE,
																 vk::VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
																 vk::VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL));

		const vk::VkAttachmentReference colorAttachmentReference =
		{
			0,
			vk::VK_IMAGE_LAYOUT_GENERAL
		};

		const vk::VkAttachmentReference depthAttachmentReference =
		{
			1,
			vk::VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL
		};

		renderPassCreateInfo.addSubpass(SubpassDescription(vk::VK_PIPELINE_BIND_POINT_GRAPHICS,
														   0,
														   0,
														   DE_NULL,
														   1,
														   &colorAttachmentReference,
														   DE_NULL,
														   depthAttachmentReference,
														   0,
														   DE_NULL));

		m_renderPass = vk::createRenderPass(m_vk, device, &renderPassCreateInfo);

		const vk::VkVertexInputBindingDescription vertexInputBindingDescription =
		{
			0,
			(deUint32)sizeof(tcu::Vec4) * 2,
			vk::VK_VERTEX_INPUT_RATE_VERTEX,
		};

		const vk::VkVertexInputAttributeDescription vertexInputAttributeDescriptions[2] =
		{
			{
				0u,
				0u,
				vk::VK_FORMAT_R32G32B32A32_SFLOAT,
				0u
			},
			{
				1u,
				0u,
				vk::VK_FORMAT_R32G32B32A32_SFLOAT,
				(deUint32)(sizeof(float)* 4),
			}
		};

		m_vertexInputState = PipelineCreateInfo::VertexInputState(1,
																  &vertexInputBindingDescription,
																  2,
																  vertexInputAttributeDescriptions);

		const PipelineCreateInfo::ColorBlendState::Attachment vkCbAttachmentState;

		PipelineCreateInfo pipelineCreateInfo(*m_pipelineLayout, *m_renderPass, 0, 0);
		pipelineCreateInfo.addShader(PipelineCreateInfo::PipelineShaderStage(*vs, "main", vk::VK_SHADER_STAGE_VERTEX_BIT));
		pipelineCreateInfo.addShader(PipelineCreateInfo::PipelineShaderStage(*fs, "main", vk::VK_SHADER_STAGE_FRAGMENT_BIT));
		pipelineCreateInfo.addState(PipelineCreateInfo::VertexInputState(m_vertexInputState));
		pipelineCreateInfo.addState(PipelineCreateInfo::InputAssemblerState(m_topology));
		pipelineCreateInfo.addState(PipelineCreateInfo::ColorBlendState(1, &vkCbAttachmentState));
		pipelineCreateInfo.addState(PipelineCreateInfo::ViewportState(1));
		pipelineCreateInfo.addState(m_depthStencilState);
		pipelineCreateInfo.addState(PipelineCreateInfo::RasterizerState());
		pipelineCreateInfo.addState(PipelineCreateInfo::MultiSampleState());
		pipelineCreateInfo.addState(PipelineCreateInfo::DynamicState());

		m_pipeline = vk::createGraphicsPipeline(m_vk, device, DE_NULL, &pipelineCreateInfo);

		std::vector<vk::VkImageView> attachments(2);
		attachments[0] = *m_colorTargetView;
		attachments[1] = *m_attachmentView;

		const FramebufferCreateInfo framebufferCreateInfo(*m_renderPass, attachments, WIDTH, HEIGHT, 1);

		m_framebuffer = vk::createFramebuffer(m_vk, device, &framebufferCreateInfo);

		const vk::VkDeviceSize dataSize = m_data.size() * sizeof(PositionColorVertex);
		m_vertexBuffer = Buffer::createAndAlloc(m_vk, device, BufferCreateInfo(dataSize,
			vk::VK_BUFFER_USAGE_VERTEX_BUFFER_BIT),
			m_context.getDefaultAllocator(), vk::MemoryRequirement::HostVisible);

		deUint8* ptr = reinterpret_cast<unsigned char *>(m_vertexBuffer->getBoundMemory().getHostPtr());
		deMemcpy(ptr, &m_data[0], static_cast<size_t>(dataSize));

		vk::flushAlloc(m_vk, device, m_vertexBuffer->getBoundMemory());

		const CmdPoolCreateInfo cmdPoolCreateInfo(m_context.getUniversalQueueFamilyIndex());
		m_cmdPool = vk::createCommandPool(m_vk, device, &cmdPoolCreateInfo);
		m_cmdBuffer = vk::allocateCommandBuffer(m_vk, device, *m_cmdPool, vk::VK_COMMAND_BUFFER_LEVEL_PRIMARY);
	}

	virtual tcu::TestStatus iterate (void)
	{
		DE_ASSERT(false);
		return tcu::TestStatus::fail("Should reimplement iterate() method");
	}

	void beginRenderPass (void)
	{
		const vk::VkClearColorValue clearColor = { { 0.0f, 0.0f, 0.0f, 1.0f } };
		beginRenderPassWithClearColor(clearColor);
	}

	void beginRenderPassWithClearColor (const vk::VkClearColorValue &clearColor)
	{
		beginCommandBuffer(m_vk, *m_cmdBuffer, 0u);

		initialTransitionColor2DImage(m_vk, *m_cmdBuffer, m_colorTargetImage->object(), vk::VK_IMAGE_LAYOUT_GENERAL,
									  vk::VK_ACCESS_TRANSFER_WRITE_BIT, vk::VK_PIPELINE_STAGE_TRANSFER_BIT);
		initialTransitionDepthStencil2DImage(m_vk, *m_cmdBuffer, m_depthStencilImage->object(), vk::VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
											 vk::VK_ACCESS_TRANSFER_WRITE_BIT, vk::VK_PIPELINE_STAGE_TRANSFER_BIT);

		const ImageSubresourceRange subresourceRangeImage(vk::VK_IMAGE_ASPECT_COLOR_BIT);
		m_vk.cmdClearColorImage(*m_cmdBuffer, m_colorTargetImage->object(),
								vk::VK_IMAGE_LAYOUT_GENERAL, &clearColor, 1, &subresourceRangeImage);

		const vk::VkClearDepthStencilValue depthStencilClearValue = { 0.0f, 0 };

		const ImageSubresourceRange subresourceRangeDepthStencil[2] = { vk::VK_IMAGE_ASPECT_DEPTH_BIT, vk::VK_IMAGE_ASPECT_STENCIL_BIT };

		m_vk.cmdClearDepthStencilImage(*m_cmdBuffer, m_depthStencilImage->object(),
									   vk::VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &depthStencilClearValue, 2, subresourceRangeDepthStencil);

		const vk::VkMemoryBarrier memBarrier =
		{
			vk::VK_STRUCTURE_TYPE_MEMORY_BARRIER,
			DE_NULL,
			vk::VK_ACCESS_TRANSFER_WRITE_BIT,
			vk::VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | vk::VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
				vk::VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | vk::VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT
		};

		m_vk.cmdPipelineBarrier(*m_cmdBuffer, vk::VK_PIPELINE_STAGE_TRANSFER_BIT,
			vk::VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT |
			vk::VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT | vk::VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT,
			0, 1, &memBarrier, 0, DE_NULL, 0, DE_NULL);

		transition2DImage(m_vk, *m_cmdBuffer, m_depthStencilImage->object(), vk::VK_IMAGE_ASPECT_DEPTH_BIT | vk::VK_IMAGE_ASPECT_STENCIL_BIT,
						  vk::VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, vk::VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
						  vk::VK_ACCESS_TRANSFER_WRITE_BIT, vk::VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT | vk::VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT,
						  vk::VK_PIPELINE_STAGE_TRANSFER_BIT, vk::VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT | vk::VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT);

		vk::beginRenderPass(m_vk, *m_cmdBuffer, *m_renderPass, *m_framebuffer, vk::makeRect2D(0, 0, WIDTH, HEIGHT));
	}

	void setDynamicViewportState (const deUint32 width, const deUint32 height)
	{
		vk::VkViewport viewport = vk::makeViewport(tcu::UVec2(width, height));
		m_vk.cmdSetViewport(*m_cmdBuffer, 0, 1, &viewport);

		vk::VkRect2D scissor = vk::makeRect2D(tcu::UVec2(width, height));
		m_vk.cmdSetScissor(*m_cmdBuffer, 0, 1, &scissor);
	}

	void setDynamicViewportState (const deUint32 viewportCount, const vk::VkViewport* pViewports, const vk::VkRect2D* pScissors)
	{
		m_vk.cmdSetViewport(*m_cmdBuffer, 0, viewportCount, pViewports);
		m_vk.cmdSetScissor(*m_cmdBuffer, 0, viewportCount, pScissors);
	}

	void setDynamicRasterizationState (const float lineWidth = 1.0f,
		const float depthBiasConstantFactor = 0.0f,
		const float depthBiasClamp = 0.0f,
		const float depthBiasSlopeFactor = 0.0f)
	{
		m_vk.cmdSetLineWidth(*m_cmdBuffer, lineWidth);
		m_vk.cmdSetDepthBias(*m_cmdBuffer, depthBiasConstantFactor, depthBiasClamp, depthBiasSlopeFactor);
	}

	void setDynamicBlendState (const float const1 = 0.0f, const float const2 = 0.0f,
		const float const3 = 0.0f, const float const4 = 0.0f)
	{
		float blendConstantsants[4] = { const1, const2, const3, const4 };
		m_vk.cmdSetBlendConstants(*m_cmdBuffer, blendConstantsants);
	}

	void setDynamicDepthStencilState (const float minDepthBounds = -1.0f, const float maxDepthBounds = 1.0f,
		const deUint32 stencilFrontCompareMask = 0xffffffffu, const deUint32 stencilFrontWriteMask = 0xffffffffu,
		const deUint32 stencilFrontReference = 0, const deUint32 stencilBackCompareMask = 0xffffffffu,
		const deUint32 stencilBackWriteMask = 0xffffffffu, const deUint32 stencilBackReference = 0)
	{
		m_vk.cmdSetDepthBounds(*m_cmdBuffer, minDepthBounds, maxDepthBounds);
		m_vk.cmdSetStencilCompareMask(*m_cmdBuffer, vk::VK_STENCIL_FACE_FRONT_BIT, stencilFrontCompareMask);
		m_vk.cmdSetStencilWriteMask(*m_cmdBuffer, vk::VK_STENCIL_FACE_FRONT_BIT, stencilFrontWriteMask);
		m_vk.cmdSetStencilReference(*m_cmdBuffer, vk::VK_STENCIL_FACE_FRONT_BIT, stencilFrontReference);
		m_vk.cmdSetStencilCompareMask(*m_cmdBuffer, vk::VK_STENCIL_FACE_BACK_BIT, stencilBackCompareMask);
		m_vk.cmdSetStencilWriteMask(*m_cmdBuffer, vk::VK_STENCIL_FACE_BACK_BIT, stencilBackWriteMask);
		m_vk.cmdSetStencilReference(*m_cmdBuffer, vk::VK_STENCIL_FACE_BACK_BIT, stencilBackReference);
	}
};

class DepthBiasParamTestInstance : public DepthBiasBaseCase
{
public:
	DepthBiasParamTestInstance (Context& context, ShaderMap shaders)
		: DepthBiasBaseCase (context, shaders[glu::SHADERTYPE_VERTEX], shaders[glu::SHADERTYPE_FRAGMENT])
	{
		m_data.push_back(PositionColorVertex(tcu::Vec4(-1.0f, 1.0f, 0.5f, 1.0f), tcu::RGBA::blue().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(1.0f, 1.0f, 0.5f, 1.0f), tcu::RGBA::blue().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(-1.0f, -1.0f, 0.5f, 1.0f), tcu::RGBA::blue().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(1.0f, -1.0f, 0.5f, 1.0f), tcu::RGBA::blue().toVec()));

		m_data.push_back(PositionColorVertex(tcu::Vec4(-0.5f, 0.5f, 1.0f, 1.0f), tcu::RGBA::green().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(0.5f, 0.5f, 1.0f, 1.0f), tcu::RGBA::green().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(-0.5f, -0.5f, 1.0f, 1.0f), tcu::RGBA::green().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(0.5f, -0.5f, 1.0f, 1.0f), tcu::RGBA::green().toVec()));

		m_data.push_back(PositionColorVertex(tcu::Vec4(-1.0f, 1.0f, 0.5f, 1.0f), tcu::RGBA::red().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(1.0f, 1.0f, 0.5f, 1.0f), tcu::RGBA::red().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(-1.0f, -1.0f, 0.5f, 1.0f), tcu::RGBA::red().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(1.0f, -1.0f, 0.5f, 1.0f), tcu::RGBA::red().toVec()));

		// enable depth test
		m_depthStencilState = PipelineCreateInfo::DepthStencilState(
			VK_TRUE, VK_TRUE, vk::VK_COMPARE_OP_GREATER_OR_EQUAL);

		DepthBiasBaseCase::initialize();
	}

	virtual tcu::TestStatus iterate (void)
	{
		tcu::TestLog&		log		= m_context.getTestContext().getLog();
		const vk::VkQueue	queue	= m_context.getUniversalQueue();
		const vk::VkDevice	device	= m_context.getDevice();

		beginRenderPass();

		// set states here
		setDynamicViewportState(WIDTH, HEIGHT);
		setDynamicBlendState();
		setDynamicDepthStencilState();

		m_vk.cmdBindPipeline(*m_cmdBuffer, vk::VK_PIPELINE_BIND_POINT_GRAPHICS, *m_pipeline);

		const vk::VkDeviceSize vertexBufferOffset	= 0;
		const vk::VkBuffer vertexBuffer				= m_vertexBuffer->object();
		m_vk.cmdBindVertexBuffers(*m_cmdBuffer, 0, 1, &vertexBuffer, &vertexBufferOffset);

		setDynamicRasterizationState(1.0f, 0.0f);
		m_vk.cmdDraw(*m_cmdBuffer, 4, 1, 0, 0);
		m_vk.cmdDraw(*m_cmdBuffer, 4, 1, 4, 0);

		setDynamicRasterizationState(1.0f, -1.0f);
		m_vk.cmdDraw(*m_cmdBuffer, 4, 1, 8, 0);

		endRenderPass(m_vk, *m_cmdBuffer);
		endCommandBuffer(m_vk, *m_cmdBuffer);

		submitCommandsAndWait(m_vk, device, queue, m_cmdBuffer.get());

		// validation
		{
			VK_CHECK(m_vk.queueWaitIdle(queue));

			tcu::Texture2D referenceFrame(vk::mapVkFormat(m_colorAttachmentFormat), (int)(0.5f + static_cast<float>(WIDTH)), (int)(0.5f + static_cast<float>(HEIGHT)));
			referenceFrame.allocLevel(0);

			const deInt32 frameWidth = referenceFrame.getWidth();
			const deInt32 frameHeight = referenceFrame.getHeight();

			tcu::clear(referenceFrame.getLevel(0), tcu::Vec4(0.0f, 0.0f, 0.0f, 1.0f));

			for (int y = 0; y < frameHeight; y++)
			{
				const float yCoord = (float)(y / (0.5*frameHeight)) - 1.0f;

				for (int x = 0; x < frameWidth; x++)
				{
					const float xCoord = (float)(x / (0.5*frameWidth)) - 1.0f;

					if (xCoord >= -0.5f && xCoord <= 0.5f && yCoord >= -0.5f && yCoord <= 0.5f)
						referenceFrame.getLevel(0).setPixel(tcu::Vec4(0.0f, 1.0f, 0.0f, 1.0f), x, y);
					else
						referenceFrame.getLevel(0).setPixel(tcu::Vec4(0.0f, 0.0f, 1.0f, 1.0f), x, y);
				}
			}

			const vk::VkOffset3D zeroOffset = { 0, 0, 0 };
			const tcu::ConstPixelBufferAccess renderedFrame = m_colorTargetImage->readSurface(queue, m_context.getDefaultAllocator(),
				vk::VK_IMAGE_LAYOUT_GENERAL, zeroOffset, WIDTH, HEIGHT, vk::VK_IMAGE_ASPECT_COLOR_BIT);

			if (!tcu::fuzzyCompare(log, "Result", "Image comparison result",
				referenceFrame.getLevel(0), renderedFrame, 0.05f,
				tcu::COMPARE_LOG_RESULT))
			{
				return tcu::TestStatus(QP_TEST_RESULT_FAIL, "Image verification failed");
			}

			return tcu::TestStatus(QP_TEST_RESULT_PASS, "Image verification passed");
		}
	}
};

class DepthBiasClampParamTestInstance : public DepthBiasBaseCase
{
public:
	DepthBiasClampParamTestInstance (Context& context, ShaderMap shaders)
		: DepthBiasBaseCase (context, shaders[glu::SHADERTYPE_VERTEX], shaders[glu::SHADERTYPE_FRAGMENT])
	{
		m_data.push_back(PositionColorVertex(tcu::Vec4(-1.0f, 1.0f, 0.0f, 1.0f), tcu::RGBA::blue().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(1.0f, 1.0f, 0.0f, 1.0f), tcu::RGBA::blue().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(-1.0f, -1.0f, 0.0f, 1.0f), tcu::RGBA::blue().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(1.0f, -1.0f, 0.0f, 1.0f), tcu::RGBA::blue().toVec()));

		m_data.push_back(PositionColorVertex(tcu::Vec4(-0.5f, 0.5f, 0.01f, 1.0f), tcu::RGBA::green().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(0.5f, 0.5f, 0.01f, 1.0f), tcu::RGBA::green().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(-0.5f, -0.5f, 0.01f, 1.0f), tcu::RGBA::green().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(0.5f, -0.5f, 0.01f, 1.0f), tcu::RGBA::green().toVec()));

		// enable depth test
		m_depthStencilState = PipelineCreateInfo::DepthStencilState(VK_TRUE, VK_TRUE, vk::VK_COMPARE_OP_GREATER_OR_EQUAL);

		DepthBiasBaseCase::initialize();
	}

	virtual tcu::TestStatus iterate (void)
	{
		tcu::TestLog&		log		= m_context.getTestContext().getLog();
		const vk::VkQueue	queue	= m_context.getUniversalQueue();
		const vk::VkDevice	device	= m_context.getDevice();

		beginRenderPass();

		// set states here
		setDynamicViewportState(WIDTH, HEIGHT);
		setDynamicBlendState();
		setDynamicDepthStencilState();

		m_vk.cmdBindPipeline(*m_cmdBuffer, vk::VK_PIPELINE_BIND_POINT_GRAPHICS, *m_pipeline);

		const vk::VkDeviceSize vertexBufferOffset = 0;
		const vk::VkBuffer vertexBuffer = m_vertexBuffer->object();
		m_vk.cmdBindVertexBuffers(*m_cmdBuffer, 0, 1, &vertexBuffer, &vertexBufferOffset);

		setDynamicRasterizationState(1.0f, 1000.0f, 0.005f);
		m_vk.cmdDraw(*m_cmdBuffer, 4, 1, 0, 0);

		setDynamicRasterizationState(1.0f, 0.0f);
		m_vk.cmdDraw(*m_cmdBuffer, 4, 1, 4, 0);

		endRenderPass(m_vk, *m_cmdBuffer);
		endCommandBuffer(m_vk, *m_cmdBuffer);

		submitCommandsAndWait(m_vk, device, queue, m_cmdBuffer.get());

		// validation
		{
			tcu::Texture2D referenceFrame(vk::mapVkFormat(m_colorAttachmentFormat), (int)(0.5f + static_cast<float>(WIDTH)), (int)(0.5f + static_cast<float>(HEIGHT)));
			referenceFrame.allocLevel(0);

			const deInt32 frameWidth	= referenceFrame.getWidth();
			const deInt32 frameHeight	= referenceFrame.getHeight();

			tcu::clear(referenceFrame.getLevel(0), tcu::Vec4(0.0f, 0.0f, 0.0f, 1.0f));

			for (int y = 0; y < frameHeight; y++)
			{
				float yCoord = (float)(y / (0.5*frameHeight)) - 1.0f;

				for (int x = 0; x < frameWidth; x++)
				{
					float xCoord = (float)(x / (0.5*frameWidth)) - 1.0f;

					if (xCoord >= -0.5f && xCoord <= 0.5f && yCoord >= -0.5f && yCoord <= 0.5f)
						referenceFrame.getLevel(0).setPixel(tcu::Vec4(0.0f, 1.0f, 0.0f, 1.0f), x, y);
					else
						referenceFrame.getLevel(0).setPixel(tcu::Vec4(0.0f, 0.0f, 1.0f, 1.0f), x, y);
				}
			}

			const vk::VkOffset3D zeroOffset					= { 0, 0, 0 };
			const tcu::ConstPixelBufferAccess renderedFrame = m_colorTargetImage->readSurface(queue, m_context.getDefaultAllocator(),
				vk::VK_IMAGE_LAYOUT_GENERAL, zeroOffset, WIDTH, HEIGHT, vk::VK_IMAGE_ASPECT_COLOR_BIT);

			if (!tcu::fuzzyCompare(log, "Result", "Image comparison result",
				referenceFrame.getLevel(0), renderedFrame, 0.05f,
				tcu::COMPARE_LOG_RESULT))
			{
				return tcu::TestStatus(QP_TEST_RESULT_FAIL, "Image verification failed");
			}

			return tcu::TestStatus(QP_TEST_RESULT_PASS, "Image verification passed");
		}
	}
};

class LineWidthParamTestInstance : public DynamicStateBaseClass
{
public:
	LineWidthParamTestInstance (Context& context, ShaderMap shaders)
		: DynamicStateBaseClass (context, shaders[glu::SHADERTYPE_VERTEX], shaders[glu::SHADERTYPE_FRAGMENT])
	{
		m_topology = vk::VK_PRIMITIVE_TOPOLOGY_LINE_LIST;

		m_data.push_back(PositionColorVertex(tcu::Vec4(-1.0f, 0.0f, 0.0f, 1.0f), tcu::RGBA::green().toVec()));
		m_data.push_back(PositionColorVertex(tcu::Vec4(1.0f, 0.0f, 0.0f, 1.0f), tcu::RGBA::green().toVec()));

		DynamicStateBaseClass::initialize();
	}

	virtual tcu::TestStatus iterate (void)
	{
		tcu::TestLog&		log		= m_context.getTestContext().getLog();
		const vk::VkQueue	queue	= m_context.getUniversalQueue();
		const vk::VkDevice	device	= m_context.getDevice();

		beginRenderPass();

		// set states here
		vk::VkPhysicalDeviceProperties deviceProperties;
		m_context.getInstanceInterface().getPhysicalDeviceProperties(m_context.getPhysicalDevice(), &deviceProperties);

		setDynamicViewportState(WIDTH, HEIGHT);
		setDynamicBlendState();
		setDynamicDepthStencilState();
		setDynamicRasterizationState(deFloatFloor(deviceProperties.limits.lineWidthRange[1]));

		m_vk.cmdBindPipeline(*m_cmdBuffer, vk::VK_PIPELINE_BIND_POINT_GRAPHICS, *m_pipeline);

		const vk::VkDeviceSize vertexBufferOffset	= 0;
		const vk::VkBuffer vertexBuffer				= m_vertexBuffer->object();
		m_vk.cmdBindVertexBuffers(*m_cmdBuffer, 0, 1, &vertexBuffer, &vertexBufferOffset);

		m_vk.cmdDraw(*m_cmdBuffer, static_cast<deUint32>(m_data.size()), 1, 0, 0);

		endRenderPass(m_vk, *m_cmdBuffer);
		endCommandBuffer(m_vk, *m_cmdBuffer);

		submitCommandsAndWait(m_vk, device, queue, m_cmdBuffer.get());

		// validation
		{
			tcu::Texture2D referenceFrame(vk::mapVkFormat(m_colorAttachmentFormat), (int)(0.5f + static_cast<float>(WIDTH)), (int)(0.5f + static_cast<float>(HEIGHT)));
			referenceFrame.allocLevel(0);

			const deInt32 frameWidth = referenceFrame.getWidth();
			const deInt32 frameHeight = referenceFrame.getHeight();

			tcu::clear(referenceFrame.getLevel(0), tcu::Vec4(0.0f, 0.0f, 0.0f, 1.0f));

			for (int y = 0; y < frameHeight; y++)
			{
				float yCoord = (float)(y / (0.5*frameHeight)) - 1.0f;

				for (int x = 0; x < frameWidth; x++)
				{
					float xCoord = (float)(x / (0.5*frameWidth)) - 1.0f;
					float lineHalfWidth = (float)(deFloor(deviceProperties.limits.lineWidthRange[1]) / frameHeight);

					if (xCoord >= -1.0f && xCoord <= 1.0f && yCoord >= -lineHalfWidth && yCoord <= lineHalfWidth)
						referenceFrame.getLevel(0).setPixel(tcu::Vec4(0.0f, 1.0f, 0.0f, 1.0f), x, y);
				}
			}

			const vk::VkOffset3D zeroOffset = { 0, 0, 0 };
			const tcu::ConstPixelBufferAccess renderedFrame = m_colorTargetImage->readSurface(queue, m_context.getDefaultAllocator(),
																							  vk::VK_IMAGE_LAYOUT_GENERAL, zeroOffset, WIDTH, HEIGHT,
																							  vk::VK_IMAGE_ASPECT_COLOR_BIT);

			if (!tcu::fuzzyCompare(log, "Result", "Image comparison result",
				referenceFrame.getLevel(0), renderedFrame, 0.05f,
				tcu::COMPARE_LOG_RESULT))
			{
				return tcu::TestStatus(QP_TEST_RESULT_FAIL, "Image verification failed");
			}

			return tcu::TestStatus(QP_TEST_RESULT_PASS, "Image verification passed");
		}
	}
};

void checkDepthBiasClampSupport (Context& context)
{
	context.requireDeviceCoreFeature(DEVICE_CORE_FEATURE_DEPTH_BIAS_CLAMP);
}

void checkWideLinesSupport (Context& context)
{
	context.requireDeviceCoreFeature(DEVICE_CORE_FEATURE_WIDE_LINES);
}

} //anonymous

DynamicStateRSTests::DynamicStateRSTests (tcu::TestContext& testCtx)
	: TestCaseGroup (testCtx, "rs_state", "Tests for rasterizer state")
{
	/* Left blank on purpose */
}

DynamicStateRSTests::~DynamicStateRSTests ()
{
}

void DynamicStateRSTests::init (void)
{
	ShaderMap shaderPaths;
	shaderPaths[glu::SHADERTYPE_VERTEX]		= "vulkan/dynamic_state/VertexFetch.vert";
	shaderPaths[glu::SHADERTYPE_FRAGMENT]	= "vulkan/dynamic_state/VertexFetch.frag";

	addChild(new InstanceFactory<DepthBiasParamTestInstance>(m_testCtx, "depth_bias", "Test depth bias functionality", shaderPaths));
	addChild(new InstanceFactory<DepthBiasClampParamTestInstance, FunctionSupport0>(m_testCtx, "depth_bias_clamp", "Test depth bias clamp functionality", shaderPaths, checkDepthBiasClampSupport));
	addChild(new InstanceFactory<LineWidthParamTestInstance, FunctionSupport0>(m_testCtx, "line_width", "Draw a line with width set to max defined by physical device", shaderPaths, checkWideLinesSupport));
}

} // DynamicState
} // vkt