Changeset: 3 More work

1 files changed, 58 insertions, 0 deletions

diff --git a/source/CpuMesh.cpp b/source/CpuMesh.cpp
new file mode 100644
index 0000000..8e65395
--- /dev/null
+++ b/source/CpuMesh.cpp
@@ -0,0 +1,58 @@
+#include "CpuMesh.hpp"
+
+bool CpuMesh::IsEmpty() const {
+	return !mVertexFormat->elements.empty();
+}
+
+std::byte* CpuMesh::GetVertices() const {
+	return mVertexData.get();
+}
+
+int CpuMesh::GetVertexNumBytes() const {
+	return mVertexByteCount;
+}
+
+std::byte* CpuMesh::GetIndices() const {
+	return mIndexData.get();
+}
+
+int CpuMesh::GetIndexNumBytes() const {
+	return mIndexCount * Tags::SizeOf(mIndexType);
+}
+
+GpuMesh* CpuMesh::SyncToGpuCreate() const {
+	if (IsEmpty()) return nullptr;
+
+	auto vertexBuffer = new GpuVertexBuffer();
+	vertexBuffer->Upload(mVertexData.get(), GetVertexNumBytes());
+
+	auto bindings = new BufferBindings();
+	for (auto& elm : mVertexFormat->elements) {
+		bindings->SetBinding(elm.bindingIndex, vertexBuffer);
+	}
+
+	auto indexBuffer = new GpuIndexBuffer();
+	indexBuffer->Upload(mIndexData.get(), mIndexType, mIndexCount);
+
+	return new GpuMesh(mVertexFormat.Get(), bindings, indexBuffer);
+}
+
+void CpuMesh::SyncToGpu(GpuMesh& mesh) const {
+	if (IsEmpty()) return;
+
+	auto& oldFormat = mesh.vertFormat;
+	auto& newFormat = this->mVertexFormat;
+	if (oldFormat != newFormat) {
+		auto buffer = new GpuVertexBuffer();
+		buffer->Upload(mVertexData.get(), GetVertexNumBytes());
+
+		mesh.vertBufBindings->Clear();
+		for (auto& elm : newFormat->elements) {
+			mesh.vertBufBindings->SetBinding(elm.bindingIndex, buffer);
+		}
+
+		oldFormat = newFormat;
+	}
+
+	mesh.indexBuf->Upload(mIndexData.get(), mIndexType, mIndexCount);
+}