Added texture samplers

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Former-commit-id: 6978f1489cdc841d36fbcd6f1a8e01a4adbfcb8a

include/Nazara/Renderer/TextureSampler.hpp

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+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Renderer module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_TEXTURESAMPLER_HPP
+#define NAZARA_TEXTURESAMPLER_HPP
+
+#include <Nazara/Prerequesites.hpp>
+#include <Nazara/Renderer/Enums.hpp>
+
+class NzTexture;
+
+class NAZARA_API NzTextureSampler
+{
+	friend class NzRenderer;
+
+	public:
+		NzTextureSampler();
+		NzTextureSampler(const NzTextureSampler& sampler) = default;
+
+		nzUInt8 GetAnisotropicLevel() const;
+		nzSamplerFilter GetFilterMode() const;
+		nzSamplerWrap GetWrapMode() const;
+
+		void SetAnisotropyLevel(nzUInt8 anisotropyLevel);
+		void SetFilterMode(nzSamplerFilter filterMode);
+		void SetWrapMode(nzSamplerWrap wrapMode);
+
+		NzTextureSampler& operator=(const NzTextureSampler& sampler) = default;
+
+		static nzUInt8 GetDefaultAnisotropicLevel();
+		static nzSamplerFilter GetDefaultFilterMode();
+		static nzSamplerWrap GetDefaultWrapMode();
+
+		static void SetDefaultAnisotropyLevel(nzUInt8 anisotropyLevel);
+		static void SetDefaultFilterMode(nzSamplerFilter filterMode);
+		static void SetDefaultWrapMode(nzSamplerWrap wrapMode);
+
+	private:
+		void Apply(const NzTexture* texture);
+		void Bind(unsigned int unit);
+		bool UseMipmaps(bool mipmaps);
+
+		static bool Initialize();
+		static void Uninitialize();
+
+		nzSamplerFilter m_filterMode;
+		nzSamplerWrap m_wrapMode;
+		nzUInt8 m_anisotropicLevel;
+		bool m_mipmaps;
+		mutable unsigned int m_samplerId;
+
+		static nzSamplerFilter s_defaultFilterMode;
+		static nzSamplerWrap s_defaultWrapMode;
+		static nzUInt8 s_defaultAnisotropyLevel;
+};
+
+#endif // NAZARA_TEXTURESAMPLER_HPP