StillHammer
d63d8d83fa
- Add complete BgfxRenderer module structure (24 files) - RHI abstraction layer (no bgfx:: exposed outside BgfxDevice.cpp) - Frame system with lock-free allocator - RenderGraph with ClearPass, SpritePass, DebugPass - SceneCollector for IIO message parsing (render:* topics) - ResourceCache with thread-safe texture/shader caching - Full IModule integration (config via IDataNode, comm via IIO) - CMake with FetchContent for bgfx - Windows build script (build_renderer.bat) - Documentation (README.md, USER_GUIDE.md, PLAN_BGFX_RENDERER.md) - Updated .gitignore for Windows builds 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
#pragma once
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#include <atomic>
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#include <cstdint>
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#include <cstddef>
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#include <new>
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namespace grove {
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// ============================================================================
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// Frame Allocator - Lock-free linear allocator, reset each frame
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// ============================================================================
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class FrameAllocator {
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public:
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static constexpr size_t DEFAULT_SIZE = 16 * 1024 * 1024; // 16 MB
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explicit FrameAllocator(size_t size = DEFAULT_SIZE);
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~FrameAllocator();
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// Non-copyable
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FrameAllocator(const FrameAllocator&) = delete;
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FrameAllocator& operator=(const FrameAllocator&) = delete;
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// Thread-safe, lock-free allocation
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void* allocate(size_t size, size_t alignment = 16);
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// Typed allocation with constructor
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template<typename T, typename... Args>
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T* allocate(Args&&... args) {
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void* ptr = allocate(sizeof(T), alignof(T));
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if (!ptr) return nullptr;
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return new (ptr) T(std::forward<Args>(args)...);
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}
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// Array allocation
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template<typename T>
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T* allocateArray(size_t count) {
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void* ptr = allocate(sizeof(T) * count, alignof(T));
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if (!ptr) return nullptr;
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for (size_t i = 0; i < count; ++i) {
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new (static_cast<T*>(ptr) + i) T();
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}
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return static_cast<T*>(ptr);
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}
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// Reset (called once per frame, single-thread)
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void reset();
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// Stats
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size_t getUsed() const;
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size_t getCapacity() const { return m_capacity; }
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private:
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uint8_t* m_buffer;
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size_t m_capacity;
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std::atomic<size_t> m_offset;
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};
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} // namespace grove
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