- added the softpoly and Vulkan backend code fron GZDoom.

Not hooked up yet.

source/common/rendering/polyrenderer/backend/poly_buffers.h

@@ -0,0 +1,79 @@
+#pragma once
+
+#include "hwrenderer/data/buffers.h"
+#include "polyrenderer/drawers/poly_triangle.h"
+#include "tarray.h"
+#include <vector>
+
+#ifdef _MSC_VER
+// silence bogus warning C4250: 'PolyVertexBuffer': inherits 'PolyBuffer::PolyBuffer::SetData' via dominance
+// According to internet infos, the warning is erroneously emitted in this case.
+#pragma warning(disable:4250) 
+#endif
+
+class PolyBuffer : virtual public IBuffer
+{
+public:
+	PolyBuffer();
+	~PolyBuffer();
+
+	static void ResetAll();
+	void Reset();
+
+	void SetData(size_t size, const void *data, bool staticdata) override;
+	void SetSubData(size_t offset, size_t size, const void *data) override;
+	void Resize(size_t newsize) override;
+
+	void Map() override;
+	void Unmap() override;
+
+	void *Lock(unsigned int size) override;
+	void Unlock() override;
+
+private:
+	static PolyBuffer *First;
+	PolyBuffer *Prev = nullptr;
+	PolyBuffer *Next = nullptr;
+	std::vector<uint32_t> mData;
+};
+
+class PolyVertexInputAssembly final : public PolyInputAssembly
+{
+public:
+	size_t mOffsets[VATTR_MAX] = {};
+	size_t mStride = 0;
+
+	int NumBindingPoints;
+	size_t Stride;
+	std::vector<FVertexBufferAttribute> Attrs;
+	int UseVertexData;
+
+	void Load(PolyTriangleThreadData *thread, const void *vertices, int index) override;
+};
+
+class PolyVertexBuffer : public IVertexBuffer, public PolyBuffer
+{
+public:
+	PolyVertexBuffer() { }
+	void SetFormat(int numBindingPoints, int numAttributes, size_t stride, const FVertexBufferAttribute *attrs) override;
+
+	PolyVertexInputAssembly *VertexFormat = nullptr;
+};
+
+class PolyIndexBuffer : public IIndexBuffer, public PolyBuffer
+{
+public:
+	PolyIndexBuffer() { }
+};
+
+class PolyDataBuffer : public IDataBuffer, public PolyBuffer
+{
+public:
+	PolyDataBuffer(int bindingpoint, bool ssbo, bool needresize) : bindingpoint(bindingpoint)
+	{
+	}
+
+	void BindRange(FRenderState *state, size_t start, size_t length) override;
+
+	int bindingpoint;
+};