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physx/samples/sampleframework/renderer/include/RendererIndexBuffer.h

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+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+//  * Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//  * Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//  * Neither the name of NVIDIA CORPORATION nor the names of its
+//    contributors may be used to endorse or promote products derived
+//    from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
+
+#ifndef RENDERER_INDEXBUFFER_H
+#define RENDERER_INDEXBUFFER_H
+
+#include <RendererConfig.h>
+#include "RendererInteropableBuffer.h"
+
+namespace SampleRenderer
+{
+
+	class RendererIndexBufferDesc;
+
+	class RendererIndexBuffer: public RendererInteropableBuffer
+	{
+		friend class RendererMesh;
+	public:
+		enum Format
+		{
+			FORMAT_UINT16 = 0,
+			FORMAT_UINT32,
+
+			NUM_FORMATS
+		}_Format;
+
+		enum Hint
+		{
+			HINT_STATIC = 0,
+			HINT_DYNAMIC,
+		}_Hint;
+
+	public:
+		static PxU32 getFormatByteSize(Format format);
+
+	protected:
+		RendererIndexBuffer(const RendererIndexBufferDesc &desc);
+		virtual ~RendererIndexBuffer(void);
+
+	public:
+		void release(void) { delete this; }
+
+		Hint   getHint(void) const;
+		Format getFormat(void) const;
+		PxU32  getMaxIndices(void) const;
+
+	public:
+		virtual void *lock(void) = 0;
+		virtual void  unlock(void) = 0;
+
+	private:
+		virtual void bind(void) const = 0;
+		virtual void unbind(void) const = 0;
+
+		RendererIndexBuffer &operator=(const RendererIndexBuffer &) { return *this; }
+
+	protected:
+		const Hint   m_hint;
+		const Format m_format;
+		PxU32        m_maxIndices;
+	};
+
+} // namespace SampleRenderer
+
+#endif