Seele/src/Engine/Graphics/GraphicsInitializer.h

#pragma once
#include "GraphicsEnums.h"

namespace Seele
{

struct GraphicsInitializer
{
    const char *windowLayoutFile;
    const char *applicationName;
    const char *engineName;
    void *windowHandle;
    /**
	 * layers defines the enabled Vulkan layers used in the instance,
	 * if ENABLE_VALIDATION is defined, standard validation is already enabled
	 * not yet implemented
	 */
    Array<const char *> layers;
    Array<const char *> instanceExtensions;
    Array<const char *> deviceExtensions;
    GraphicsInitializer()
        : applicationName("SeeleEngine"), engineName("SeeleEngine"), layers{"VK_LAYER_LUNARG_standard_validation"}, instanceExtensions{}, deviceExtensions{"VK_KHR_swapchain"}, windowHandle(nullptr)
    {
    }
    GraphicsInitializer(const GraphicsInitializer &other)
        : applicationName(other.applicationName), engineName(other.engineName), layers(other.layers), instanceExtensions(other.instanceExtensions), deviceExtensions(other.deviceExtensions)
    {
    }
};
struct WindowCreateInfo
{
    int32 width;
    int32 height;
    const char *title;
    bool bFullscreen;
    Gfx::SeSampleCountFlags numSamples;
    Gfx::SeFormat pixelFormat;
    void *windowHandle;
};
struct ViewportCreateInfo
{
    uint32 sizeX;
    uint32 sizeY;
    uint32 offsetX;
    uint32 offsetY;
};
// doesnt own the data, only proxy it
struct BulkResourceData
{
    uint32 size;
    uint8 *data;
    Gfx::QueueType owner;
    BulkResourceData()
        : size(0), data(nullptr), owner(Gfx::QueueType::GRAPHICS)
    {
    }
};
struct TextureCreateInfo
{
    BulkResourceData resourceData;
    uint32 width;
    uint32 height;
    uint32 depth;
    bool bArray;
    uint32 arrayLayers;
    uint32 mipLevels;
    uint32 samples;
    Gfx::SeFormat format;
    Gfx::SeImageUsageFlagBits usage;
    TextureCreateInfo()
        : resourceData(), width(1), height(1), depth(1), bArray(false), arrayLayers(1)
        , mipLevels(1), samples(1), format(Gfx::SE_FORMAT_R32G32B32A32_SFLOAT)
        , usage(Gfx::SE_IMAGE_USAGE_SAMPLED_BIT)
    {
    }
};
struct VertexBufferCreateInfo
{
    BulkResourceData resourceData;
    // bytes per vertex
    uint32 vertexSize;
    uint32 numVertices;
    VertexBufferCreateInfo()
        : resourceData(), vertexSize(0), numVertices(0)
    {
    }
};
struct IndexBufferCreateInfo
{
    BulkResourceData resourceData;
    Gfx::SeIndexType indexType;
    IndexBufferCreateInfo()
        : resourceData(), indexType(Gfx::SeIndexType::SE_INDEX_TYPE_UINT16)
    {
    }
};
struct ShaderCreateInfo
{
    //It's possible to input multiple source files for materials or vertexFactories
    Array<std::string> shaderCode;
    std::string entryPoint;
    Array<const char*> typeParameter;
};

namespace Gfx
{
struct SePushConstantRange
{
    SeShaderStageFlags stageFlags;
    uint32_t offset;
    uint32_t size;
};
struct VertexElement
{
    VertexElement(){}
    VertexElement(uint32 location, SeFormat vertexFormat, uint32 offset)
        : location(location), vertexFormat(vertexFormat), offset(offset)
    {}
    uint32 location;
    SeFormat vertexFormat;
    uint32 offset;
};
struct RasterizationState
{
    uint8 depthClampEnable : 1;
    uint8 rasterizerDiscardEnable : 1;
    uint8 depthBiasEnable : 1;
    float depthBoasConstantFactor;
    float depthBiasClamp;
    float depthBiasSlopeFactor;
    float lineWidth;
    SePolygonMode polygonMode;
    SeCullModeFlags cullMode;
    SeFrontFace frontFace;
};
struct MultisampleState
{
    uint32 samples;
    float minSampleShading;
    uint8 sampleShadingEnable : 1;
    uint8 alphaCoverageEnable;
    uint8 alphaToOneEnable;
};
struct DepthStencilState
{
    uint8 depthTestEnable : 1;
    uint8 depthWriteEnable : 1;
    uint8 depthBoundsTestEnable : 1;
    uint8 stencilTestEnable : 1;
    SeCompareOp depthCompareOp;
    SeStencilOp front;
    SeStencilOp back;
    float minDepthBounds;
    float maxDepthBounds;
};
struct ColorBlendState
{
    uint8 logicOpEnable : 1;
    SeLogicOp logicOp;
    uint32 attachmentCount;
    struct BlendAttachment
    {
        uint8 blendEnable;
        SeBlendFactor srcColorBlendFactor;
        SeBlendFactor dstColorBlendFactor;
        SeBlendOp colorBlendOp;
        SeBlendFactor srcAlphaBlendFactor;
        SeBlendFactor dstAlphaBlendFactor;
        SeBlendOp alphaBlendOp;
        SeColorComponentFlags colorWriteMask;
    } blendAttachments[16];
    float blendConstants[4];
};
} // namespace Gfx
DECLARE_NAME_REF(Gfx, VertexDeclaration);
DECLARE_NAME_REF(Gfx, VertexShader);
DECLARE_NAME_REF(Gfx, ControlShader);
DECLARE_NAME_REF(Gfx, EvaluationShader);
DECLARE_NAME_REF(Gfx, GeometryShader);
DECLARE_NAME_REF(Gfx, FragmentShader);
DECLARE_NAME_REF(Gfx, PipelineLayout);
DECLARE_NAME_REF(Gfx, RenderPass);
struct GraphicsPipelineCreateInfo
{
	Gfx::PVertexDeclaration vertexDeclaration;
	Gfx::PVertexShader vertexShader;
	Gfx::PControlShader controlShader;
	Gfx::PEvaluationShader evalShader;
	Gfx::PGeometryShader geometryShader;
	Gfx::PFragmentShader fragmentShader;
	Gfx::PRenderPass renderPass;
	Gfx::SePrimitiveTopology topology;
	Gfx::RasterizationState rasterizationState;
	Gfx::DepthStencilState depthStencilState;
	Gfx::MultisampleState multisampleState;
	Gfx::ColorBlendState colorBlend;
	GraphicsPipelineCreateInfo()
	{
		std::memset(this, 0, sizeof(*this));
        topology = Gfx::SE_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
        rasterizationState.cullMode = Gfx::SE_CULL_MODE_BACK_BIT;
        rasterizationState.polygonMode = Gfx::SE_POLYGON_MODE_FILL;
        rasterizationState.frontFace = Gfx::SE_FRONT_FACE_COUNTER_CLOCKWISE;
        depthStencilState.depthCompareOp = Gfx::SE_COMPARE_OP_LESS;
        depthStencilState.minDepthBounds = 0.0f;
        depthStencilState.maxDepthBounds = 1.0f;
        depthStencilState.stencilTestEnable = false;
        depthStencilState.depthWriteEnable = true;
        depthStencilState.depthTestEnable = true;
        multisampleState.samples = 1;
        colorBlend.attachmentCount = 0;
        colorBlend.logicOpEnable = false;
        colorBlend.blendConstants[0] = 1.0f;
        colorBlend.blendConstants[1] = 1.0f;
        colorBlend.blendConstants[2] = 1.0f;
        colorBlend.blendConstants[3] = 1.0f;
	}
};
} // namespace Seele