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optimizing chunk mesh

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kbz_8
2025-05-20 16:15:23 +02:00
parent 84e5e437d0
commit 6fea3147ee
9 changed files with 199 additions and 125 deletions
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176
Application/Chunk.cpp
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@@ -2,26 +2,35 @@
#include <Block.h>
#include <World.h>
#define CHUNK_POS_TO_INDEX(px, py, pz) (px * CHUNK_SIZE.x * CHUNK_SIZE.z + pz * CHUNK_SIZE.z + py)
Chunk::Chunk(World& world, Scop::Vec2i offset) : m_data(CHUNK_VOLUME, 0), m_offset(offset), m_position(std::move(offset) * Scop::Vec2i{ CHUNK_SIZE.x, CHUNK_SIZE.z }), m_world(world)
Chunk::Chunk(World& world, Scop::Vec2i offset) : m_offset(offset), m_position(std::move(offset) * Scop::Vec2i{ CHUNK_SIZE.x, CHUNK_SIZE.z }), m_world(world)
{
m_data.resize(CHUNK_SIZE.x);
for(auto& z: m_data)
{
z.resize(CHUNK_SIZE.z);
for(auto& y: z)
y.resize(CHUNK_SIZE.y);
}
}
void Chunk::GenerateChunk()
{
if(p_actor)
return;
std::memset(m_data.data(), 0, m_data.size() * sizeof(std::uint32_t));
for(auto& z: m_data)
{
for(auto& y: z)
std::fill(y.begin(), y.end(), 0);
}
for(std::uint32_t x = 0; x < CHUNK_SIZE.x; x++)
{
for(std::uint32_t z = 0; z < CHUNK_SIZE.z; z++)
{
// Implement noise here
std::uint32_t height = std::min(static_cast<std::uint32_t>(4 + (std::sin(x) + std::cos(z)) * 2), CHUNK_SIZE.y);
std::uint32_t height = std::min(static_cast<std::uint32_t>(4 + (std::sin(m_position.x) * std::sin(m_position.y)) * 10 + x), CHUNK_SIZE.y);
for(std::uint32_t y = 0; y < height; y++)
m_data[CHUNK_POS_TO_INDEX(x, y, z)] = 1;
m_data[x][z][y] = 1;
}
}
}
@@ -34,6 +43,8 @@ void Chunk::GenerateMesh()
m_mesh_data.clear();
m_mesh_index_data.clear();
std::size_t offset = 0;
for(std::uint32_t x = 0; x < CHUNK_SIZE.x; x++)
{
for(std::uint32_t z = 0; z < CHUNK_SIZE.z; z++)
@@ -42,77 +53,111 @@ void Chunk::GenerateMesh()
{
if(!GetBlock(Scop::Vec3i(x, y, z)))
continue;
if(!GetBlock(Scop::Vec3i(x, y, static_cast<std::int32_t>(z) - 1)))
{
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[0].position + Scop::Vec3f(x, y, z), BLOCK_MESH[0].normal, BLOCK_MESH[0].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[1].position + Scop::Vec3f(x, y, z), BLOCK_MESH[1].normal, BLOCK_MESH[1].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[2].position + Scop::Vec3f(x, y, z), BLOCK_MESH[2].normal, BLOCK_MESH[2].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[3].position + Scop::Vec3f(x, y, z), BLOCK_MESH[3].normal, BLOCK_MESH[3].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[4].position + Scop::Vec3f(x, y, z), BLOCK_MESH[4].normal, BLOCK_MESH[4].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[5].position + Scop::Vec3f(x, y, z), BLOCK_MESH[5].normal, BLOCK_MESH[5].uv));
}
if(!GetBlock(Scop::Vec3i(x, y, z + 1)))
{
m_mesh_index_data.push_back(offset);
m_mesh_index_data.push_back(offset + 2);
m_mesh_index_data.push_back(offset + 3);
m_mesh_index_data.push_back(offset);
m_mesh_index_data.push_back(offset + 3);
m_mesh_index_data.push_back(offset + 1);
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[0].position + Scop::Vec3f(x, y, z), BLOCK_MESH[0].normal, BLOCK_MESH[0].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[1].position + Scop::Vec3f(x, y, z), BLOCK_MESH[1].normal, BLOCK_MESH[1].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[2].position + Scop::Vec3f(x, y, z), BLOCK_MESH[2].normal, BLOCK_MESH[2].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[3].position + Scop::Vec3f(x, y, z), BLOCK_MESH[3].normal, BLOCK_MESH[3].uv));
offset += 4;
}
if(!GetBlock(Scop::Vec3i(x, y, static_cast<std::int32_t>(z) - 1)))
{
m_mesh_index_data.push_back(offset + 2);
m_mesh_index_data.push_back(offset + 3);
m_mesh_index_data.push_back(offset + 1);
m_mesh_index_data.push_back(offset + 2);
m_mesh_index_data.push_back(offset + 1);
m_mesh_index_data.push_back(offset);
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[4].position + Scop::Vec3f(x, y, z), BLOCK_MESH[4].normal, BLOCK_MESH[4].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[5].position + Scop::Vec3f(x, y, z), BLOCK_MESH[5].normal, BLOCK_MESH[5].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[6].position + Scop::Vec3f(x, y, z), BLOCK_MESH[6].normal, BLOCK_MESH[6].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[7].position + Scop::Vec3f(x, y, z), BLOCK_MESH[7].normal, BLOCK_MESH[7].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[8].position + Scop::Vec3f(x, y, z), BLOCK_MESH[8].normal, BLOCK_MESH[8].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[9].position + Scop::Vec3f(x, y, z), BLOCK_MESH[9].normal, BLOCK_MESH[9].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[10].position + Scop::Vec3f(x, y, z), BLOCK_MESH[10].normal, BLOCK_MESH[10].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[11].position + Scop::Vec3f(x, y, z), BLOCK_MESH[11].normal, BLOCK_MESH[11].uv));
}
if(!GetBlock(Scop::Vec3i(static_cast<std::int32_t>(x) - 1, y, z)))
{
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[12].position + Scop::Vec3f(x, y, z), BLOCK_MESH[12].normal, BLOCK_MESH[12].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[13].position + Scop::Vec3f(x, y, z), BLOCK_MESH[13].normal, BLOCK_MESH[13].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[14].position + Scop::Vec3f(x, y, z), BLOCK_MESH[14].normal, BLOCK_MESH[14].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[15].position + Scop::Vec3f(x, y, z), BLOCK_MESH[15].normal, BLOCK_MESH[15].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[16].position + Scop::Vec3f(x, y, z), BLOCK_MESH[16].normal, BLOCK_MESH[16].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[17].position + Scop::Vec3f(x, y, z), BLOCK_MESH[17].normal, BLOCK_MESH[17].uv));
}
if(!GetBlock(Scop::Vec3i(x + 1, y, z)))
{
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[18].position + Scop::Vec3f(x, y, z), BLOCK_MESH[18].normal, BLOCK_MESH[18].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[19].position + Scop::Vec3f(x, y, z), BLOCK_MESH[19].normal, BLOCK_MESH[19].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[20].position + Scop::Vec3f(x, y, z), BLOCK_MESH[20].normal, BLOCK_MESH[20].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[21].position + Scop::Vec3f(x, y, z), BLOCK_MESH[21].normal, BLOCK_MESH[21].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[22].position + Scop::Vec3f(x, y, z), BLOCK_MESH[22].normal, BLOCK_MESH[22].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[23].position + Scop::Vec3f(x, y, z), BLOCK_MESH[23].normal, BLOCK_MESH[23].uv));
}
if(!GetBlock(Scop::Vec3i(x, static_cast<std::int32_t>(y) - 1, z)))
{
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[24].position + Scop::Vec3f(x, y, z), BLOCK_MESH[24].normal, BLOCK_MESH[24].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[25].position + Scop::Vec3f(x, y, z), BLOCK_MESH[25].normal, BLOCK_MESH[25].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[26].position + Scop::Vec3f(x, y, z), BLOCK_MESH[26].normal, BLOCK_MESH[26].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[27].position + Scop::Vec3f(x, y, z), BLOCK_MESH[27].normal, BLOCK_MESH[27].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[28].position + Scop::Vec3f(x, y, z), BLOCK_MESH[28].normal, BLOCK_MESH[28].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[29].position + Scop::Vec3f(x, y, z), BLOCK_MESH[29].normal, BLOCK_MESH[29].uv));
offset += 4;
}
if(!GetBlock(Scop::Vec3i(x, y + 1, z)))
{
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[30].position + Scop::Vec3f(x, y, z), BLOCK_MESH[30].normal, BLOCK_MESH[30].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[31].position + Scop::Vec3f(x, y, z), BLOCK_MESH[31].normal, BLOCK_MESH[31].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[32].position + Scop::Vec3f(x, y, z), BLOCK_MESH[32].normal, BLOCK_MESH[32].uv));
m_mesh_index_data.push_back(offset + 1);
m_mesh_index_data.push_back(offset);
m_mesh_index_data.push_back(offset + 2);
m_mesh_index_data.push_back(offset + 1);
m_mesh_index_data.push_back(offset + 2);
m_mesh_index_data.push_back(offset + 3);
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[33].position + Scop::Vec3f(x, y, z), BLOCK_MESH[33].normal, BLOCK_MESH[33].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[34].position + Scop::Vec3f(x, y, z), BLOCK_MESH[34].normal, BLOCK_MESH[34].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[35].position + Scop::Vec3f(x, y, z), BLOCK_MESH[35].normal, BLOCK_MESH[35].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[8].position + Scop::Vec3f(x, y, z), BLOCK_MESH[0].normal, BLOCK_MESH[8].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[9].position + Scop::Vec3f(x, y, z), BLOCK_MESH[9].normal, BLOCK_MESH[9].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[10].position + Scop::Vec3f(x, y, z), BLOCK_MESH[10].normal, BLOCK_MESH[10].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[11].position + Scop::Vec3f(x, y, z), BLOCK_MESH[11].normal, BLOCK_MESH[11].uv));
offset += 4;
}
if(!GetBlock(Scop::Vec3i(x, static_cast<std::int32_t>(y) - 1, z)))
{
m_mesh_index_data.push_back(offset + 3);
m_mesh_index_data.push_back(offset + 1);
m_mesh_index_data.push_back(offset);
m_mesh_index_data.push_back(offset + 3);
m_mesh_index_data.push_back(offset);
m_mesh_index_data.push_back(offset + 2);
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[12].position + Scop::Vec3f(x, y, z), BLOCK_MESH[12].normal, BLOCK_MESH[12].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[13].position + Scop::Vec3f(x, y, z), BLOCK_MESH[13].normal, BLOCK_MESH[13].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[14].position + Scop::Vec3f(x, y, z), BLOCK_MESH[14].normal, BLOCK_MESH[14].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[15].position + Scop::Vec3f(x, y, z), BLOCK_MESH[15].normal, BLOCK_MESH[15].uv));
offset += 4;
}
if(!GetBlock(Scop::Vec3i(x + 1, y, z)))
{
m_mesh_index_data.push_back(offset + 2);
m_mesh_index_data.push_back(offset + 3);
m_mesh_index_data.push_back(offset + 1);
m_mesh_index_data.push_back(offset + 2);
m_mesh_index_data.push_back(offset + 1);
m_mesh_index_data.push_back(offset);
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[16].position + Scop::Vec3f(x, y, z), BLOCK_MESH[16].normal, BLOCK_MESH[16].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[17].position + Scop::Vec3f(x, y, z), BLOCK_MESH[17].normal, BLOCK_MESH[17].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[18].position + Scop::Vec3f(x, y, z), BLOCK_MESH[18].normal, BLOCK_MESH[18].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[19].position + Scop::Vec3f(x, y, z), BLOCK_MESH[19].normal, BLOCK_MESH[19].uv));
offset += 4;
}
if(!GetBlock(Scop::Vec3i(static_cast<std::int32_t>(x) - 1, y, z)))
{
m_mesh_index_data.push_back(offset);
m_mesh_index_data.push_back(offset + 2);
m_mesh_index_data.push_back(offset + 3);
m_mesh_index_data.push_back(offset);
m_mesh_index_data.push_back(offset + 3);
m_mesh_index_data.push_back(offset + 1);
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[20].position + Scop::Vec3f(x, y, z), BLOCK_MESH[20].normal, BLOCK_MESH[20].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[21].position + Scop::Vec3f(x, y, z), BLOCK_MESH[21].normal, BLOCK_MESH[21].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[22].position + Scop::Vec3f(x, y, z), BLOCK_MESH[22].normal, BLOCK_MESH[22].uv));
m_mesh_data.push_back(Scop::Vertex(BLOCK_MESH[23].position + Scop::Vec3f(x, y, z), BLOCK_MESH[23].normal, BLOCK_MESH[23].uv));
offset += 4;
}
}
}
}
for(std::uint32_t i = 0; i < m_mesh_data.size(); i++)
m_mesh_index_data.push_back(i);
}
void Chunk::UploadMesh()
@@ -131,10 +176,7 @@ void Chunk::UploadMesh()
std::uint32_t Chunk::GetBlock(Scop::Vec3i position) const noexcept
{
if(position.x < 0 || position.x >= CHUNK_SIZE.x || position.z < 0 || position.z >= CHUNK_SIZE.z || position.y < 0)
return 1;
std::uint32_t index = CHUNK_POS_TO_INDEX(position.x, position.y, position.z);
if(index < m_data.size())
return m_data[index];
if(position.x < m_data.size() && position.z < m_data[position.x].size() && position.y < m_data[position.x][position.z].size())
return m_data[position.x][position.z][position.y];
return 0;
}