Vertex.cpp

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/**
* @file Vertex.cpp.
* @brief The Vertex Class Implementation.
* @author Spices.
*/
 
#include "Pchheader.h"
#include "Vertex.h"
 
namespace Spices {
 
    std::vector<VkVertexInputBindingDescription> InputAssembly::GetBindingDescriptions()
    {
        SPICES_PROFILE_ZONE;
 
        std::vector<VkVertexInputBindingDescription> bindingDescriptions(1);
 
        bindingDescriptions[0].binding   = 0;
        bindingDescriptions[0].stride    = sizeof(glm::vec3);
        bindingDescriptions[0].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
 
        return std::move(bindingDescriptions);
    }
 
    std::vector<VkVertexInputAttributeDescription> InputAssembly::GetAttributeDescriptions()
    {
        SPICES_PROFILE_ZONE;
 
        std::vector<VkVertexInputAttributeDescription> attributeDescriptions(1);
 
        attributeDescriptions[0].binding  = 0;
        attributeDescriptions[0].location = 0;
        attributeDescriptions[0].format   = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[0].offset   = 0;
 
        return std::move(attributeDescriptions);
    }
 
    std::vector<VkVertexInputBindingDescription> InputAssembly::GetSlateBindingDescriptions()
    {
        SPICES_PROFILE_ZONE;
 
        std::vector<VkVertexInputBindingDescription> bindingDescriptions(3);
 
        bindingDescriptions[0].binding   = 0;
        bindingDescriptions[0].stride    = sizeof(glm::vec2);
        bindingDescriptions[0].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
 
        bindingDescriptions[1].binding   = 1;
        bindingDescriptions[1].stride    = sizeof(glm::vec2);
        bindingDescriptions[1].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
 
        bindingDescriptions[2].binding   = 2;
        bindingDescriptions[2].stride    = sizeof(float);
        bindingDescriptions[2].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
 
        return std::move(bindingDescriptions);
    }
 
    std::vector<VkVertexInputAttributeDescription> InputAssembly::GetSlateAttributeDescriptions()
    {
        SPICES_PROFILE_ZONE;
 
        std::vector<VkVertexInputAttributeDescription> attributeDescriptions(3);
 
        attributeDescriptions[0].binding  = 0;
        attributeDescriptions[0].location = 0;
        attributeDescriptions[0].format   = VK_FORMAT_R32G32_SFLOAT;
        attributeDescriptions[0].offset   = 0;
 
        attributeDescriptions[1].binding  = 1;
        attributeDescriptions[1].location = 1;
        attributeDescriptions[1].format   = VK_FORMAT_R32G32_SFLOAT;
        attributeDescriptions[1].offset   = 0;
 
        attributeDescriptions[2].binding  = 2;
        attributeDescriptions[2].location = 2;
        attributeDescriptions[2].format   = VK_FORMAT_R8G8B8A8_UNORM;
        attributeDescriptions[2].offset   = 0;
 
        return std::move(attributeDescriptions);
    }
 
 
    void Meshlet::FromMeshopt(const meshopt_Meshlet& m, const meshopt_Bounds& bounds)
    {
        SPICES_PROFILE_ZONE;
 
        vertexOffset           = m.vertex_offset;
        primitiveOffset        = 0;                   /* @brief Need more work here. */
        nVertices              = m.vertex_count;
        nPrimitives            = m.triangle_count;
 
        lod                    = 0;
 
        boundSphere.c.x        = bounds.center[0];
        boundSphere.c.y        = bounds.center[1];
        boundSphere.c.z        = bounds.center[2];
        boundSphere.r          = bounds.radius;
 
        clusterBoundSphere.c   = glm::vec3(0.0f);
        clusterBoundSphere.r   = 0.0f;
 
        coneApex.x             = bounds.cone_apex[0];
        coneApex.y             = bounds.cone_apex[1];
        coneApex.z             = bounds.cone_apex[2];
 
        coneAxis.x             = bounds.cone_axis[0];
        coneAxis.y             = bounds.cone_axis[1];
        coneAxis.z             = bounds.cone_axis[2];
 
        coneCutoff             = bounds.cone_cutoff;
    }
}