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fix: resolve transparency rendering issues

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zhenyan121
2026-04-18 11:55:53 +08:00
parent bb888fd7b7
commit 955c4ddec7
4 changed files with 58 additions and 128 deletions
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99
src/gameplay/chunk.cpp
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@@ -66,62 +66,6 @@ int Chunk::get_index(const glm::vec3& pos) {
return Chunk::get_index(pos.x, pos.y, pos.z);
}
// this is thread-unsafe!
void Chunk::gen_vertex_data() {
m_vertexs_data.clear();
static const glm::ivec3 DIR[6] = {
{0,0,1},{1,0,0},{0,0,-1},{-1,0,0},{0,1,0},{0,-1,0}
};
for (int x = 0; x < SIZE_X; x++) {
for (int y = 0; y < SIZE_Y; y++) {
for (int z = 0; z < SIZE_Z; z++) {
int world_x = x + m_chunk_pos.x * CHUCK_SIZE;
int world_z = z + m_chunk_pos.z * CHUCK_SIZE;
int world_y = y;
int id = m_blocks[get_index(x, y, z)];
// air
if (id == 0) {
continue;
}
for (int face = 0; face < 6; face++) {
int nx = x + DIR[face].x;
int ny = y + DIR[face].y;
int nz = z + DIR[face].z;
bool neighbor_soild = false;
if (nx < 0 || nx >= SIZE_X || ny < 0 || ny >= SIZE_Y || nz < 0 || nz>= SIZE_Z) {
neighbor_soild = m_world.is_block(glm::ivec3(world_x, world_y, world_z) + DIR[face]);
} else {
if (m_blocks[get_index(nx, ny, nz)] != 0) {
neighbor_soild = true;
}
}
if (neighbor_soild) {
continue;
}
for (int i = 0; i < 6; i++) {
Vertex vex = {
VERTICES_POS[face][i][0] + (float)world_x * 1.0f,
VERTICES_POS[face][i][1] + (float)world_y * 1.0f,
VERTICES_POS[face][i][2] + (float)world_z * 1.0f,
TEX_COORDS[face][i][0],
TEX_COORDS[face][i][1],
static_cast<float>(id * 6 + face)
};
m_vertexs_data.emplace_back(vex);
}
}
}
}
}
}
void Chunk::gen_vertex_data(const std::vector<const std::vector<uint8_t>*>& neighbor_block) {
m_vertexs_data.clear();
@@ -135,16 +79,17 @@ void Chunk::gen_vertex_data(const std::vector<const std::vector<uint8_t>*>& neig
int world_x = x + m_chunk_pos.x * CHUCK_SIZE;
int world_z = z + m_chunk_pos.z * CHUCK_SIZE;
int world_y = y;
int id = m_blocks[get_index(x, y, z)];
int cur_id = m_blocks[get_index(x, y, z)];
// air
if (id == 0) {
if (cur_id == 0) {
continue;
}
for (int face = 0; face < 6; face++) {
int nx = x + DIR[face].x;
int ny = y + DIR[face].y;
int nz = z + DIR[face].z;
bool neighbor_soild = false;
bool neighbor_cull = false;
if (nx < 0 || nx >= SIZE_X || ny < 0 || ny >= SIZE_Y || nz < 0 || nz>= SIZE_Z) {
@@ -154,7 +99,7 @@ void Chunk::gen_vertex_data(const std::vector<const std::vector<uint8_t>*>& neig
auto [neighbor_x, neighbor_z] = World::chunk_pos(world_nx, world_nz);
auto is_block = [&](const std::vector<uint8_t>* chunk_blocks){
auto is_cull = [&](const std::vector<uint8_t>* chunk_blocks){
if (chunk_blocks == nullptr) {
return false;
}
@@ -173,30 +118,42 @@ void Chunk::gen_vertex_data(const std::vector<const std::vector<uint8_t>*>& neig
return false;
}
auto id = (*chunk_blocks)[idx];
if (id == 0) {
return false;
if (is_in_transparent_map(id)) {
if (id == cur_id) {
return true;
} else {
return false;
}
} else {
return true;
}
};
if (m_chunk_pos.x + 1 == neighbor_x) {
neighbor_soild = is_block(neighbor_block[0]);
neighbor_cull = is_cull(neighbor_block[0]);
} else if (m_chunk_pos.x - 1 == neighbor_x) {
neighbor_soild = is_block(neighbor_block[1]);
neighbor_cull = is_cull(neighbor_block[1]);
} else if (m_chunk_pos.z + 1 == neighbor_z) {
neighbor_soild = is_block(neighbor_block[2]);
neighbor_cull = is_cull(neighbor_block[2]);
} else if (m_chunk_pos.z - 1 == neighbor_z) {
neighbor_soild = is_block(neighbor_block[3]);
neighbor_cull = is_cull(neighbor_block[3]);
}
//neighbor_soild = m_world.is_block(glm::ivec3(world_x, world_y, world_z) + DIR[face]);
//neighbor_cull = m_world.is_block(glm::ivec3(world_x, world_y, world_z) + DIR[face]);
} else {
if (m_blocks[get_index(nx, ny, nz)] != 0) {
neighbor_soild = true;
auto id = m_blocks[get_index(nx, ny, nz)];
if (!is_in_transparent_map(id)) {
neighbor_cull = true;
} else {
if (id == cur_id) {
neighbor_cull = true;
} else {
neighbor_cull = false;
}
}
}
if (neighbor_soild) {
if (neighbor_cull) {
continue;
}
for (int i = 0; i < 6; i++) {
@@ -206,7 +163,7 @@ void Chunk::gen_vertex_data(const std::vector<const std::vector<uint8_t>*>& neig
VERTICES_POS[face][i][2] + (float)world_z * 1.0f,
TEX_COORDS[face][i][0],
TEX_COORDS[face][i][1],
static_cast<float>(id * 6 + face)
static_cast<float>(cur_id * 6 + face)
};
m_vertexs_data.emplace_back(vex);