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new structure

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Jorijn van der Graaf 2025-11-16 15:32:11 +01:00
commit 1155e67d63
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interfaces/Crafter.Graphics-Mesh.cppm Normal file
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/*
Crafter®.Graphics
Copyright (C) 2025 Catcrafts®
Catcrafts.net
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3.0 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
module;
#include <vulkan/vulkan.h>
export module Crafter.Graphics:Mesh;
import std;
import Crafter.Math;
import :VulkanBuffer;
import :Types;
namespace Crafter {
/**
* @brief Holder for a indexed mesh.
* @tparam VertexType The vertex type to use that is internally stored, this must match the type the glsl shader expects.
*/
export template <typename VertexType>
class Mesh {
public:
std::uint32_t vertexCount;
std::uint32_t indexCount;
Buffer<VertexType> verticies;
Buffer<std::uint32_t> indicies;
/**
* @brief Constructs Mesh with empty vertex and index buffer.
* @param vertexCount count of the vertex buffer
* @param vertexCount count of the index buffer
*/
Mesh(std::uint32_t vertexCount, std::uint32_t indexCount) : vertexCount(vertexCount), indexCount(indexCount), verticies(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, vertexCount), indicies(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, indexCount) {
}
/**
* @brief Constructs Mesh from an in memory char buffer.
* @param asset pointer to the char buffer.
*/
Mesh(const char* asset) requires(std::same_as<VertexType, Vertex>) : vertexCount(reinterpret_cast<const std::uint32_t*>(asset)[0]), indexCount(((reinterpret_cast<const std::uint32_t*>(asset)[1]) + 63) & ~63), verticies(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, vertexCount), indicies(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, indexCount) {
uint32_t indexCountNoPadding = reinterpret_cast<const std::uint32_t*>(asset)[1];
const float* verticies = reinterpret_cast<const float*>(asset+sizeof(std::uint32_t)*2);
std::uint32_t counter = 0;
for(std::uint32_t i = 0; i < vertexCount*3; i+=3) {
this->verticies.value[counter].x = verticies[i];
this->verticies.value[counter].y = verticies[i+1];
this->verticies.value[counter].z = verticies[i+2];
this->verticies.value[counter].w = 1.0f;
counter++;
}
memcpy(indicies.value, asset+(sizeof(std::uint32_t)*2)+(vertexCount*sizeof(float)*3), indexCountNoPadding*sizeof(std::uint32_t));
for(std::uint32_t i = indexCountNoPadding; i < indexCountNoPadding+(indexCountNoPadding%64); i++) {
indicies.value[i] = 0;//pad indicies to nearest 64
}
}
/**
* @brief Constructs UV Mesh from an in memory char buffer.
* @param asset pointer to the char buffer.
*/
Mesh(const char* asset) requires(std::same_as<VertexType, VertexUV>) : vertexCount(reinterpret_cast<const std::uint32_t*>(asset)[0]), indexCount(((reinterpret_cast<const std::uint32_t*>(asset)[1]) + 63) & ~63), verticies(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, vertexCount), indicies(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, indexCount) {
uint32_t indexCountNoPadding = reinterpret_cast<const std::uint32_t*>(asset)[1];
const float* verticies = reinterpret_cast<const float*>(asset+sizeof(std::uint32_t)*2);
std::uint32_t counter = 0;
for(std::uint32_t i = 0; i < vertexCount*5; i+=5) {
this->verticies.value[counter].x = verticies[i];
this->verticies.value[counter].y = verticies[i+1];
this->verticies.value[counter].z = verticies[i+2];
this->verticies.value[counter].u = verticies[i+3];
this->verticies.value[counter].v = verticies[i+4];
this->verticies.value[counter].w = 1.0f;
counter++;
}
memcpy(indicies.value, asset+(sizeof(std::uint32_t)*2)+(vertexCount*sizeof(float)*5), indexCountNoPadding*sizeof(std::uint32_t));
for(std::uint32_t i = indexCountNoPadding; i < indexCountNoPadding+(indexCountNoPadding%64); i++) {
indicies.value[i] = 0;//pad indicies to nearest 64
}
}
/**
* @brief Constructs heightmap Mesh from an in memory char buffer.
* @param heights pointer to heights.
* @param sizeX size in the X dimension.
* @param sizeZ size in the Y dimension.
* @param spacing spacing between the points .
*/
Mesh(float* heights, uint32_t sizeX, uint32_t sizeZ, float spacing) : vertexCount(sizeX*sizeZ), indexCount(((((sizeX-1)*(sizeZ-1))*6)+ 63) & ~63), verticies(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, vertexCount), indicies(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, indexCount) {
uint32_t indexCountNoPadding = ((sizeX-1)*(sizeZ-1))*6;
for (float x = 0; x < sizeX; x++)
{
for (float z = 0; z < sizeZ; z++)
{
uint32_t xInt = static_cast<uint32_t>(x);
uint32_t zInt = static_cast<uint32_t>(z);
Vector<float, 3> pos((x * spacing) - ((sizeX*spacing) / 2.0f), heights[xInt * sizeX + zInt], (z * spacing) - ((sizeZ*spacing) / 2.0f));
Vector<float, 2> uv(x / sizeX, z / sizeZ);
VertexType vertex;
vertex.x = pos.x;
vertex.y = pos.y;
vertex.z = pos.z;
vertex.w = 1.0f;
vertex.u = uv.x;
vertex.v = uv.y;
verticies.value[xInt * sizeX + zInt] = vertex;
}
}
for (uint32_t x = 0; x < sizeX - 1; x++)
{
for (uint32_t z = 0; z < sizeZ - 1; z++)
{
uint32_t topLeftIndex = x * sizeZ + z;
uint32_t topRightIndex = topLeftIndex + 1;
uint32_t bottomLeftIndex = topLeftIndex + sizeZ;
uint32_t bottomRightIndex = bottomLeftIndex + 1;
uint32_t index = (x * sizeX + z)*6;
indicies.value[index] = topRightIndex;
indicies.value[index + 1] = bottomLeftIndex;
indicies.value[index + 2] = topLeftIndex;
indicies.value[index + 3] = bottomRightIndex;
indicies.value[index + 4] = bottomLeftIndex;
indicies.value[index + 5] = topRightIndex;
}
}
for(std::uint32_t i = indexCountNoPadding; i < indexCountNoPadding+(indexCountNoPadding%64); i++) {
indicies.value[i] = 0;//pad indicies to nearest 64
}
}
};
}