From 25bf78bfb4785e2cbed683cc56d3cec4271d8b5a Mon Sep 17 00:00:00 2001
From: Frederico Linhares <fred@linhares.blue>
Date: Thu, 7 Sep 2023 15:14:14 -0300
Subject: feat Create skeletal mesh

---
 src/vk/static_mesh.cpp | 132 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 src/vk/static_mesh.cpp

(limited to 'src/vk/static_mesh.cpp')

diff --git a/src/vk/static_mesh.cpp b/src/vk/static_mesh.cpp
new file mode 100644
index 0000000..29034df
--- /dev/null
+++ b/src/vk/static_mesh.cpp
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2022-2023 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "static_mesh.hpp"
+
+#include "../binary_reader.hpp"
+#include "../command.hpp"
+#include "../core.hpp"
+#include "static_mesh_vertex.hpp"
+
+namespace
+{
+
+// Data that is only needed for the command chain but not for the StaticMesh
+// goes here.
+struct MeshBuilder
+{
+  std::string mesh_path;
+  VK::StaticMesh *mesh;
+
+  MeshBuilder(VK::StaticMesh *m, std::string mp);
+  MeshBuilder(VK::StaticMesh *m, const char* mp);
+};
+
+MeshBuilder::MeshBuilder(VK::StaticMesh *m, std::string mp):
+  mesh{m},
+  mesh_path{mp}
+{
+}
+
+MeshBuilder::MeshBuilder(VK::StaticMesh *m, const char *mp):
+  MeshBuilder{m, std::string(mp)}
+{
+}
+
+void
+load_mesh(void *obj)
+{
+  auto self = static_cast<MeshBuilder*>(obj);
+
+  BinaryReader input{self->mesh_path};
+
+  self->mesh->queue_family =
+    cg_core.vk_device_with_swapchain->get_queue_family_with_graphics();
+
+  { // Load vertexes.
+    auto vertex_count{input.read_ui32()};
+    std::vector<VK::StaticMeshVertex> vertexes{vertex_count};
+
+    for(auto i{0}; i < vertex_count; i++)
+    {
+      vertexes[i].position = input.read_vec3();
+      vertexes[i].normal = input.read_vec3();
+      vertexes[i].texture_coord = input.read_vec2();
+    }
+
+    void *vertexes_data{vertexes.data()};
+    size_t vertexes_size = sizeof(vertexes[0]) * vertexes.size();
+    self->mesh->source_vertex_buffer = new VK::SourceBuffer{
+      self->mesh->queue_family->device, vertexes_data, vertexes_size};
+    self->mesh->vertex_buffer = new VK::DestinationBuffer{
+      self->mesh->queue_family, self->mesh->source_vertex_buffer,
+      VK_BUFFER_USAGE_VERTEX_BUFFER_BIT};
+  }
+
+  { // Load indexes
+    self->mesh->index_count = input.read_ui32();
+    std::vector<uint32_t> indexes(self->mesh->index_count);
+
+    for(auto i{0}; i < self->mesh->index_count; i++)
+      indexes[i] = input.read_ui32();
+
+    void *indexes_data{indexes.data()};
+    size_t indexes_size{sizeof(indexes[0]) * indexes.size()};
+    VK::SourceBuffer source_index_buffer{
+      self->mesh->queue_family->device, indexes_data, indexes_size};
+    self->mesh->index_buffer = new VK::DestinationBuffer{
+      self->mesh->queue_family, &source_index_buffer,
+      VK_BUFFER_USAGE_INDEX_BUFFER_BIT};
+  }
+}
+
+void
+unload_mesh(void *obj)
+{
+  auto self = static_cast<MeshBuilder*>(obj);
+
+  delete self->mesh->index_buffer;
+  delete self->mesh->vertex_buffer;
+  delete self->mesh->source_vertex_buffer;
+}
+
+static const CommandChain loader{
+  {&load_mesh, &unload_mesh}
+};
+
+}
+
+namespace VK
+{
+
+StaticMesh::StaticMesh(std::string mesh_path)
+{
+  MeshBuilder mesh_builder(this, mesh_path);
+  loader.execute(&mesh_builder);
+}
+
+StaticMesh::StaticMesh(const char* mesh_path):
+  StaticMesh{std::string(mesh_path)}
+{
+}
+
+StaticMesh::~StaticMesh()
+{
+  MeshBuilder mesh_builder(this, "");
+  loader.revert(&mesh_builder);
+}
+
+}
-- 
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