/*------------------------------------------------------------------------
 * Vulkan Conformance Tests
 * ------------------------
 *
 * Copyright (c) 2016 The Khronos Group Inc.
 * Copyright (c) 2016 Imagination Technologies Ltd.
 *
 * 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 Robustness Utilities
 *//*--------------------------------------------------------------------*/

#include "vktRobustnessUtil.hpp"
#include "vkDefs.hpp"
#include "vkImageUtil.hpp"
#include "vkPrograms.hpp"
#include "vkQueryUtil.hpp"
#include "vkRefUtil.hpp"
#include "vkTypeUtil.hpp"
#include "vkCmdUtil.hpp"
#include "vkObjUtil.hpp"
#include "deMath.h"
#include <iomanip>
#include <limits>
#include <sstream>

namespace vkt
{
namespace robustness
{

using namespace vk;

Move<VkDevice> createRobustBufferAccessDevice (Context& context)
{
	const float queuePriority = 1.0f;

	// Create a universal queue that supports graphics and compute
	const VkDeviceQueueCreateInfo queueParams =
	{
		VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,	// VkStructureType				sType;
		DE_NULL,									// const void*					pNext;
		0u,											// VkDeviceQueueCreateFlags		flags;
		context.getUniversalQueueFamilyIndex(),		// deUint32						queueFamilyIndex;
		1u,											// deUint32						queueCount;
		&queuePriority								// const float*					pQueuePriorities;
	};

	VkPhysicalDeviceFeatures enabledFeatures = context.getDeviceFeatures();
	enabledFeatures.robustBufferAccess = true;

	const VkDeviceCreateInfo deviceParams =
	{
		VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,	// VkStructureType					sType;
		DE_NULL,								// const void*						pNext;
		0u,										// VkDeviceCreateFlags				flags;
		1u,										// deUint32							queueCreateInfoCount;
		&queueParams,							// const VkDeviceQueueCreateInfo*	pQueueCreateInfos;
		0u,										// deUint32							enabledLayerCount;
		DE_NULL,								// const char* const*				ppEnabledLayerNames;
		0u,										// deUint32							enabledExtensionCount;
		DE_NULL,								// const char* const*				ppEnabledExtensionNames;
		&enabledFeatures						// const VkPhysicalDeviceFeatures*	pEnabledFeatures;
	};

	return createDevice(context.getPlatformInterface(), context.getInstance(),
						context.getInstanceInterface(), context.getPhysicalDevice(), &deviceParams);
}

bool areEqual (float a, float b)
{
	return deFloatAbs(a - b) <= 0.001f;
}

bool isValueZero (const void* valuePtr, size_t valueSizeInBytes)
{
	const deUint8* bytePtr = reinterpret_cast<const deUint8*>(valuePtr);

	for (size_t i = 0; i < valueSizeInBytes; i++)
	{
		if (bytePtr[i] != 0)
			return false;
	}

	return true;
}

bool isValueWithinBuffer (const void* buffer, VkDeviceSize bufferSize, const void* valuePtr, size_t valueSizeInBytes)
{
	const deUint8* byteBuffer = reinterpret_cast<const deUint8*>(buffer);

	if (bufferSize < ((VkDeviceSize)valueSizeInBytes))
		return false;

	for (VkDeviceSize i = 0; i <= (bufferSize - valueSizeInBytes); i++)
	{
		if (!deMemCmp(&byteBuffer[i], valuePtr, valueSizeInBytes))
			return true;
	}

	return false;
}

bool isValueWithinBufferOrZero (const void* buffer, VkDeviceSize bufferSize, const void* valuePtr, size_t valueSizeInBytes)
{
	return isValueWithinBuffer(buffer, bufferSize, valuePtr, valueSizeInBytes) || isValueZero(valuePtr, valueSizeInBytes);
}

bool verifyOutOfBoundsVec4 (const void* vecPtr, VkFormat bufferFormat)
{
	if (isUintFormat(bufferFormat))
	{
		const deUint32* data = (deUint32*)vecPtr;

		return data[0] == 0u
			&& data[1] == 0u
			&& data[2] == 0u
			&& (data[3] == 0u || data[3] == 1u || data[3] == std::numeric_limits<deUint32>::max());
	}
	else if (isIntFormat(bufferFormat))
	{
		const deInt32* data = (deInt32*)vecPtr;

		return data[0] == 0
			&& data[1] == 0
			&& data[2] == 0
			&& (data[3] == 0 || data[3] == 1 || data[3] == std::numeric_limits<deInt32>::max());
	}
	else if (isFloatFormat(bufferFormat))
	{
		const float* data = (float*)vecPtr;

		return areEqual(data[0], 0.0f)
			&& areEqual(data[1], 0.0f)
			&& areEqual(data[2], 0.0f)
			&& (areEqual(data[3], 0.0f) || areEqual(data[3], 1.0f));
	}
	else if (bufferFormat == VK_FORMAT_A2B10G10R10_UNORM_PACK32)
	{
		return *((deUint32*)vecPtr) == 0xc0000000u;
	}

	DE_ASSERT(false);
	return false;
}

void populateBufferWithTestValues (void* buffer, VkDeviceSize size, VkFormat format)
{
	// Assign a sequence of 32-bit values
	for (VkDeviceSize scalarNdx = 0; scalarNdx < size / 4; scalarNdx++)
	{
		const deUint32 valueIndex = (deUint32)(2 + scalarNdx); // Do not use 0 or 1

		if (isUintFormat(format))
		{
			reinterpret_cast<deUint32*>(buffer)[scalarNdx] = valueIndex;
		}
		else if (isIntFormat(format))
		{
			reinterpret_cast<deInt32*>(buffer)[scalarNdx] = -deInt32(valueIndex);
		}
		else if (isFloatFormat(format))
		{
			reinterpret_cast<float*>(buffer)[scalarNdx] = float(valueIndex);
		}
		else if (format == VK_FORMAT_A2B10G10R10_UNORM_PACK32)
		{
			const deUint32	r	= ((valueIndex + 0) & ((2u << 10) - 1u));
			const deUint32	g	= ((valueIndex + 1) & ((2u << 10) - 1u));
			const deUint32	b	= ((valueIndex + 2) & ((2u << 10) - 1u));
			const deUint32	a	= ((valueIndex + 0) & ((2u << 2) - 1u));

			reinterpret_cast<deUint32*>(buffer)[scalarNdx] = (a << 30) | (b << 20) | (g << 10) | r;
		}
		else
		{
			DE_ASSERT(false);
		}
	}
}

void logValue (std::ostringstream& logMsg, const void* valuePtr, VkFormat valueFormat, size_t valueSize)
{
	if (isUintFormat(valueFormat))
	{
		logMsg << *reinterpret_cast<const deUint32*>(valuePtr);
	}
	else if (isIntFormat(valueFormat))
	{
		logMsg << *reinterpret_cast<const deInt32*>(valuePtr);
	}
	else if (isFloatFormat(valueFormat))
	{
		logMsg << *reinterpret_cast<const float*>(valuePtr);
	}
	else
	{
		const deUint8*				bytePtr		= reinterpret_cast<const deUint8*>(valuePtr);
		const std::ios::fmtflags	streamFlags	= logMsg.flags();

		logMsg << std::hex;
		for (size_t i = 0; i < valueSize; i++)
		{
			logMsg << " " << (deUint32)bytePtr[i];
		}
		logMsg.flags(streamFlags);
	}
}

// TestEnvironment

TestEnvironment::TestEnvironment (Context&				context,
								  VkDevice				device,
								  VkDescriptorSetLayout	descriptorSetLayout,
								  VkDescriptorSet		descriptorSet)
	: m_context				(context)
	, m_device				(device)
	, m_descriptorSetLayout	(descriptorSetLayout)
	, m_descriptorSet		(descriptorSet)
{
	const DeviceInterface& vk = context.getDeviceInterface();

	// Create command pool
	{
		const VkCommandPoolCreateInfo commandPoolParams =
		{
			VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO,		// VkStructureType			sType;
			DE_NULL,										// const void*				pNext;
			VK_COMMAND_POOL_CREATE_TRANSIENT_BIT,			// VkCommandPoolCreateFlags	flags;
			context.getUniversalQueueFamilyIndex()			// deUint32					queueFamilyIndex;
		};

		m_commandPool = createCommandPool(vk, m_device, &commandPoolParams);
	}

	// Create command buffer
	{
		const VkCommandBufferAllocateInfo commandBufferAllocateInfo =
		{
			VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,	// VkStructureType			sType;
			DE_NULL,										// const void*				pNext;
			*m_commandPool,										// VkCommandPool			commandPool;
			VK_COMMAND_BUFFER_LEVEL_PRIMARY,				// VkCommandBufferLevel		level;
			1u,												// deUint32					bufferCount;
		};

		m_commandBuffer = allocateCommandBuffer(vk, m_device, &commandBufferAllocateInfo);
	}
}

VkCommandBuffer TestEnvironment::getCommandBuffer (void)
{
	return *m_commandBuffer;
}

// GraphicsEnvironment

GraphicsEnvironment::GraphicsEnvironment (Context&					context,
										  VkDevice					device,
										  VkDescriptorSetLayout		descriptorSetLayout,
										  VkDescriptorSet			descriptorSet,
										  const VertexBindings&		vertexBindings,
										  const VertexAttributes&	vertexAttributes,
										  const DrawConfig&			drawConfig)

	: TestEnvironment		(context, device, descriptorSetLayout, descriptorSet)
	, m_renderSize			(16, 16)
	, m_colorFormat			(VK_FORMAT_R8G8B8A8_UNORM)
{
	const DeviceInterface&		vk						= context.getDeviceInterface();
	const deUint32				queueFamilyIndex		= context.getUniversalQueueFamilyIndex();
	const VkComponentMapping	componentMappingRGBA	= { VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, VK_COMPONENT_SWIZZLE_A };
	SimpleAllocator				memAlloc				(vk, m_device, getPhysicalDeviceMemoryProperties(m_context.getInstanceInterface(), m_context.getPhysicalDevice()));

	// Create color image and view
	{
		const VkImageCreateInfo colorImageParams =
		{
			VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,										// VkStructureType			sType;
			DE_NULL,																	// const void*				pNext;
			0u,																			// VkImageCreateFlags		flags;
			VK_IMAGE_TYPE_2D,															// VkImageType				imageType;
			m_colorFormat,																// VkFormat					format;
			{ (deUint32)m_renderSize.x(), (deUint32)m_renderSize.y(), 1u },				// VkExtent3D				extent;
			1u,																			// deUint32					mipLevels;
			1u,																			// deUint32					arrayLayers;
			VK_SAMPLE_COUNT_1_BIT,														// VkSampleCountFlagBits	samples;
			VK_IMAGE_TILING_OPTIMAL,													// VkImageTiling			tiling;
			VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT,		// VkImageUsageFlags		usage;
			VK_SHARING_MODE_EXCLUSIVE,													// VkSharingMode			sharingMode;
			1u,																			// deUint32					queueFamilyIndexCount;
			&queueFamilyIndex,															// const deUint32*			pQueueFamilyIndices;
			VK_IMAGE_LAYOUT_UNDEFINED													// VkImageLayout			initialLayout;
		};

		m_colorImage			= createImage(vk, m_device, &colorImageParams);
		m_colorImageAlloc		= memAlloc.allocate(getImageMemoryRequirements(vk, m_device, *m_colorImage), MemoryRequirement::Any);
		VK_CHECK(vk.bindImageMemory(m_device, *m_colorImage, m_colorImageAlloc->getMemory(), m_colorImageAlloc->getOffset()));

		const VkImageViewCreateInfo colorAttachmentViewParams =
		{
			VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,			// VkStructureType			sType;
			DE_NULL,											// const void*				pNext;
			0u,													// VkImageViewCreateFlags	flags;
			*m_colorImage,										// VkImage					image;
			VK_IMAGE_VIEW_TYPE_2D,								// VkImageViewType			viewType;
			m_colorFormat,										// VkFormat					format;
			componentMappingRGBA,								// VkComponentMapping		components;
			{ VK_IMAGE_ASPECT_COLOR_BIT, 0u, 1u, 0u, 1u }		// VkImageSubresourceRange	subresourceRange;
		};

		m_colorAttachmentView = createImageView(vk, m_device, &colorAttachmentViewParams);
	}

	// Create render pass
	m_renderPass = makeRenderPass(vk, m_device, m_colorFormat);

	// Create framebuffer
	{
		const VkFramebufferCreateInfo framebufferParams =
		{
			VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO,			// VkStructureType			sType;
			DE_NULL,											// const void*				pNext;
			0u,													// VkFramebufferCreateFlags	flags;
			*m_renderPass,										// VkRenderPass				renderPass;
			1u,													// deUint32					attachmentCount;
			&m_colorAttachmentView.get(),						// const VkImageView*		pAttachments;
			(deUint32)m_renderSize.x(),							// deUint32					width;
			(deUint32)m_renderSize.y(),							// deUint32					height;
			1u													// deUint32					layers;
		};

		m_framebuffer = createFramebuffer(vk, m_device, &framebufferParams);
	}

	// Create pipeline layout
	{
		const VkPipelineLayoutCreateInfo pipelineLayoutParams =
		{
			VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,		// VkStructureType				sType;
			DE_NULL,											// const void*					pNext;
			0u,													// VkPipelineLayoutCreateFlags	flags;
			1u,													// deUint32						setLayoutCount;
			&m_descriptorSetLayout,								// const VkDescriptorSetLayout*	pSetLayouts;
			0u,													// deUint32						pushConstantRangeCount;
			DE_NULL												// const VkPushConstantRange*	pPushConstantRanges;
		};

		m_pipelineLayout = createPipelineLayout(vk, m_device, &pipelineLayoutParams);
	}

	m_vertexShaderModule	= createShaderModule(vk, m_device, m_context.getBinaryCollection().get("vertex"), 0);
	m_fragmentShaderModule	= createShaderModule(vk, m_device, m_context.getBinaryCollection().get("fragment"), 0);

	// Create pipeline
	{
		const VkPipelineVertexInputStateCreateInfo vertexInputStateParams =
		{
			VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,		// VkStructureType							sType;
			DE_NULL,														// const void*								pNext;
			0u,																// VkPipelineVertexInputStateCreateFlags	flags;
			(deUint32)vertexBindings.size(),								// deUint32									vertexBindingDescriptionCount;
			vertexBindings.data(),											// const VkVertexInputBindingDescription*	pVertexBindingDescriptions;
			(deUint32)vertexAttributes.size(),								// deUint32									vertexAttributeDescriptionCount;
			vertexAttributes.data()											// const VkVertexInputAttributeDescription*	pVertexAttributeDescriptions;
		};

		const std::vector<VkViewport>	viewports	(1, makeViewport(m_renderSize));
		const std::vector<VkRect2D>		scissors	(1, makeRect2D(m_renderSize));

		m_graphicsPipeline = makeGraphicsPipeline(vk,									// const DeviceInterface&                        vk
												  m_device,								// const VkDevice                                device
												  *m_pipelineLayout,					// const VkPipelineLayout                        pipelineLayout
												  *m_vertexShaderModule,				// const VkShaderModule                          vertexShaderModule
												  DE_NULL,								// const VkShaderModule                          tessellationControlShaderModule
												  DE_NULL,								// const VkShaderModule                          tessellationEvalShaderModule
												  DE_NULL,								// const VkShaderModule                          geometryShaderModule
												  *m_fragmentShaderModule,				// const VkShaderModule                          fragmentShaderModule
												  *m_renderPass,						// const VkRenderPass                            renderPass
												  viewports,							// const std::vector<VkViewport>&                viewports
												  scissors,								// const std::vector<VkRect2D>&                  scissors
												  VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP,	// const VkPrimitiveTopology                     topology
												  0u,									// const deUint32                                subpass
												  0u,									// const deUint32                                patchControlPoints
												  &vertexInputStateParams);				// const VkPipelineVertexInputStateCreateInfo*   vertexInputStateCreateInfo
	}

	// Record commands
	{
		const VkImageMemoryBarrier imageLayoutBarrier =
		{
			VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,					// VkStructureType			sType;
			DE_NULL,												// const void*				pNext;
			(VkAccessFlags)0,										// VkAccessFlags			srcAccessMask;
			VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT,					// VkAccessFlags			dstAccessMask;
			VK_IMAGE_LAYOUT_UNDEFINED,								// VkImageLayout			oldLayout;
			VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,				// VkImageLayout			newLayout;
			VK_QUEUE_FAMILY_IGNORED,								// uint32_t					srcQueueFamilyIndex;
			VK_QUEUE_FAMILY_IGNORED,								// uint32_t					dstQueueFamilyIndex;
			*m_colorImage,											// VkImage					image;
			{ VK_IMAGE_ASPECT_COLOR_BIT, 0u, 1u, 0u, 1u }			// VkImageSubresourceRange	subresourceRange;
		};

		beginCommandBuffer(vk, *m_commandBuffer, 0u);
		{
			vk.cmdPipelineBarrier(*m_commandBuffer,
								  VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
								  VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
								  (VkDependencyFlags)0,
								  0u, DE_NULL,
								  0u, DE_NULL,
								  1u, &imageLayoutBarrier);

			beginRenderPass(vk, *m_commandBuffer, *m_renderPass, *m_framebuffer, makeRect2D(0, 0, m_renderSize.x(), m_renderSize.y()), tcu::Vec4(0.0f));
			{
				const std::vector<VkDeviceSize> vertexBufferOffsets(drawConfig.vertexBuffers.size(), 0ull);

				vk.cmdBindPipeline(*m_commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, *m_graphicsPipeline);
				vk.cmdBindDescriptorSets(*m_commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, *m_pipelineLayout, 0, 1, &m_descriptorSet, 0, DE_NULL);
				vk.cmdBindVertexBuffers(*m_commandBuffer, 0, (deUint32)drawConfig.vertexBuffers.size(), drawConfig.vertexBuffers.data(), vertexBufferOffsets.data());

				if (drawConfig.indexBuffer == DE_NULL || drawConfig.indexCount == 0)
				{
					vk.cmdDraw(*m_commandBuffer, drawConfig.vertexCount, drawConfig.instanceCount, 0, 0);
				}
				else
				{
					vk.cmdBindIndexBuffer(*m_commandBuffer, drawConfig.indexBuffer, 0, VK_INDEX_TYPE_UINT32);
					vk.cmdDrawIndexed(*m_commandBuffer, drawConfig.indexCount, drawConfig.instanceCount, 0, 0, 0);
				}
			}
			endRenderPass(vk, *m_commandBuffer);
		}
		endCommandBuffer(vk, *m_commandBuffer);
	}
}

// ComputeEnvironment

ComputeEnvironment::ComputeEnvironment (Context&				context,
										VkDevice				device,
										VkDescriptorSetLayout	descriptorSetLayout,
										VkDescriptorSet			descriptorSet)

	: TestEnvironment	(context, device, descriptorSetLayout, descriptorSet)
{
	const DeviceInterface& vk = context.getDeviceInterface();

	// Create pipeline layout
	{
		const VkPipelineLayoutCreateInfo pipelineLayoutParams =
		{
			VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,			// VkStructureType					sType;
			DE_NULL,												// const void*						pNext;
			0u,														// VkPipelineLayoutCreateFlags		flags;
			1u,														// deUint32							setLayoutCount;
			&m_descriptorSetLayout,									// const VkDescriptorSetLayout*		pSetLayouts;
			0u,														// deUint32							pushConstantRangeCount;
			DE_NULL													// const VkPushConstantRange*		pPushConstantRanges;
		};

		m_pipelineLayout = createPipelineLayout(vk, m_device, &pipelineLayoutParams);
	}

	// Create compute pipeline
	{
		m_computeShaderModule = createShaderModule(vk, m_device, m_context.getBinaryCollection().get("compute"), 0);

		const VkPipelineShaderStageCreateInfo computeStageParams =
		{
			VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,	// VkStructureType						sType;
			DE_NULL,												// const void*							pNext;
			0u,														// VkPipelineShaderStageCreateFlags		flags;
			VK_SHADER_STAGE_COMPUTE_BIT,							// VkShaderStageFlagBits				stage;
			*m_computeShaderModule,									// VkShaderModule						module;
			"main",													// const char*							pName;
			DE_NULL,												// const VkSpecializationInfo*			pSpecializationInfo;
		};

		const VkComputePipelineCreateInfo computePipelineParams =
		{
			VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO,			// VkStructureType						sType;
			DE_NULL,												// const void*							pNext;
			0u,														// VkPipelineCreateFlags				flags;
			computeStageParams,										// VkPipelineShaderStageCreateInfo		stage;
			*m_pipelineLayout,										// VkPipelineLayout						layout;
			DE_NULL,												// VkPipeline							basePipelineHandle;
			0u														// deInt32								basePipelineIndex;
		};

		m_computePipeline = createComputePipeline(vk, m_device, DE_NULL, &computePipelineParams);
	}

	// Record commands
	{
		beginCommandBuffer(vk, *m_commandBuffer, 0u);
		vk.cmdBindPipeline(*m_commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, *m_computePipeline);
		vk.cmdBindDescriptorSets(*m_commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, *m_pipelineLayout, 0, 1, &m_descriptorSet, 0, DE_NULL);
		vk.cmdDispatch(*m_commandBuffer, 32, 32, 1);
		endCommandBuffer(vk, *m_commandBuffer);
	}
}

} // robustness
} // vkt