1 files changed, 162 insertions, 0 deletions
diff --git a/src/blu_cat/gra/static_mesh.cpp b/src/blu_cat/gra/static_mesh.cpp
new file mode 100644
index 0000000..0b6088c
--- /dev/null
+++ b/src/blu_cat/gra/static_mesh.cpp
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2022-2025 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 "../com/binary_reader.hpp"
+#include "../com/command.hpp"
+#include "../int/core.hpp"
+#include "static_mesh_vertex.hpp"
+
+namespace
+{
+
+struct StaticMeshHeader
+{
+	char file_magic[8];
+	UI32 version;
+	UI32 num_vertexes;
+	UI32 num_indexes;
+};
+
+constexpr UI64F STATIC_MESH_HEADER_SIZE{20};
+
+// Data that is only needed for the command chain but not for the StaticMesh
+// goes here.
+struct MeshBuilder
+{
+  std::string mesh_path;
+  BluCat::GRA::StaticMesh *mesh;
+
+  MeshBuilder(BluCat::GRA::StaticMesh *m, std::string mp);
+  MeshBuilder(BluCat::GRA::StaticMesh *m, const char* mp);
+};
+
+MeshBuilder::MeshBuilder(BluCat::GRA::StaticMesh *m, std::string mp):
+  mesh{m},
+  mesh_path{mp}
+{
+}
+
+MeshBuilder::MeshBuilder(BluCat::GRA::StaticMesh *m, const char *mp):
+  MeshBuilder{m, std::string(mp)}
+{
+}
+
+void
+load_mesh(void *obj)
+{
+  auto self = static_cast<MeshBuilder*>(obj);
+
+  self->mesh->queue_family =
+    BluCat::INT::core.vk_device_with_swapchain->
+		get_queue_family_with_graphics();
+
+	StaticMeshHeader header;
+  BinaryReader input{self->mesh_path};
+
+	{ // Read header
+		input.read_chars(header.file_magic, 8);
+		header.version = input.read_ui32();
+		header.num_vertexes = input.read_ui32();
+		header.num_indexes = input.read_ui32();
+
+		size_t total_file_size{
+			STATIC_MESH_HEADER_SIZE +
+			header.num_vertexes * 8 * SIZE_32_BIT +
+			header.num_indexes * SIZE_32_BIT};
+
+		if(total_file_size != input.size())
+		{
+			std::string error{"File size does not match header information: "};
+			error += self->mesh_path;
+			throw CommandError{error};
+		}
+	}
+
+  { // Load vertexes.
+    std::vector<BluCat::GRA::StaticMeshVertex> vertexes{header.num_vertexes};
+
+    for(auto i{0}; i < header.num_vertexes; 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 BluCat::GRA::SourceBuffer{
+      self->mesh->queue_family->device, vertexes_data, vertexes_size};
+    self->mesh->vertex_buffer = new BluCat::GRA::DestinationBuffer{
+      self->mesh->queue_family, self->mesh->source_vertex_buffer,
+      VK_BUFFER_USAGE_VERTEX_BUFFER_BIT};
+  }
+
+  { // Load indexes
+    self->mesh->index_count = header.num_indexes;
+    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()};
+    BluCat::GRA::SourceBuffer source_index_buffer{
+      self->mesh->queue_family->device, indexes_data, indexes_size};
+    self->mesh->index_buffer = new BluCat::GRA::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 BluCat::GRA
+{
+
+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);
+}
+
+}