glest-source/source/shared_lib/include/graphics/texture.h

// ==============================================================
//	This file is part of Glest Shared Library (www.glest.org)
//
//	Copyright (C) 2001-2008 Martiño Figueroa
//
//	You can redistribute this code and/or modify it under 
//	the terms of the GNU General Public License as published 
//	by the Free Software Foundation; either version 2 of the 
//	License, or (at your option) any later version
// ==============================================================

#ifndef _SHARED_GRAPHICS_TEXTURE_H_
#define _SHARED_GRAPHICS_TEXTURE_H_

#include "data_types.h"
#include "pixmap.h"
#include <string>
#include "leak_dumper.h"

using std::string;
using Shared::Platform::uint8;

struct SDL_Surface;

namespace Shared {
	namespace Graphics {

		class TextureParams;


		// =====================================================
		//	class Texture
		// =====================================================

		class Texture {
		public:
			static const int defaultSize;
			static const int defaultComponents;
			static bool useTextureCompression;

			enum WrapMode {
				wmRepeat,
				wmClamp,
				wmClampToEdge
			};

			enum Filter {
				fBilinear,
				fTrilinear
			};

			enum Format {
				fAuto,
				fAlpha,
				fLuminance,
				fRgb,
				fRgba
			};

		protected:
			string path;
			bool mipmap;
			WrapMode wrapMode;
			bool pixmapInit;
			Format format;

			bool inited;
			bool forceCompressionDisabled;
			int textureSystemId;

		public:
			Texture();
			virtual ~Texture() {
			};

			bool getMipmap() const {
				return mipmap;
			}
			WrapMode getWrapMode() const {
				return wrapMode;
			}
			bool getPixmapInit() const {
				return pixmapInit;
			}
			Format getFormat() const {
				return format;
			}
			bool getInited() const {
				return inited;
			}

			int getTextureSystemId() const {
				return textureSystemId;
			}
			void setTextureSystemId(int id) {
				textureSystemId = id;
			}

			void setMipmap(bool mipmap) {
				this->mipmap = mipmap;
			}
			void setWrapMode(WrapMode wrapMode) {
				this->wrapMode = wrapMode;
			}
			void setPixmapInit(bool pixmapInit) {
				this->pixmapInit = pixmapInit;
			}
			void setFormat(Format format) {
				this->format = format;
			}

			virtual void init(Filter filter = fBilinear, int maxAnisotropy = 1) = 0;
			virtual void end(bool deletePixelBuffer = true) = 0;
			virtual string getPath() const = 0;
			virtual void deletePixels() = 0;
			virtual std::size_t getPixelByteCount() const = 0;

			virtual void reseInitState() {
				inited = false;
			}

			virtual void setForceCompressionDisabled(bool value) {
				forceCompressionDisabled = value;
			}
			virtual bool getForceCompressionDisabled() const {
				return forceCompressionDisabled;
			}

			virtual uint32 getCRC() = 0;

		};

		// =====================================================
		//	class Texture1D
		// =====================================================

		class Texture1D : public Texture {
		protected:
			Pixmap1D pixmap;

		public:
			void load(const string &path);

			Pixmap1D *getPixmap() {
				return &pixmap;
			}
			const Pixmap1D *getPixmap() const {
				return &pixmap;
			}
			virtual string getPath() const;
			virtual void deletePixels();
			virtual std::size_t getPixelByteCount() const {
				return pixmap.getPixelByteCount();
			}

			virtual int getTextureWidth() const {
				return pixmap.getW();
			}
			virtual int getTextureHeight() const {
				return -1;
			}

			virtual uint32 getCRC() {
				return pixmap.getCRC()->getSum();
			}
		};

		// =====================================================
		//	class Texture2D
		// =====================================================

		class Texture2D : public Texture {
		protected:
			Pixmap2D pixmap;

		public:
			void load(const string &path);

			Pixmap2D *getPixmap() {
				return &pixmap;
			}
			const Pixmap2D *getPixmapConst() const {
				return &pixmap;
			}
			virtual string getPath() const;
			virtual void deletePixels();
			virtual std::size_t getPixelByteCount() const {
				return pixmap.getPixelByteCount();
			}

			virtual int getTextureWidth() const {
				return pixmap.getW();
			}
			virtual int getTextureHeight() const {
				return pixmap.getH();
			}

			virtual uint32 getCRC() {
				return pixmap.getCRC()->getSum();
			}

			std::pair<SDL_Surface*, unsigned char*> CreateSDLSurface(bool newPixelData) const;
		};

		// =====================================================
		//	class Texture3D
		// =====================================================

		class Texture3D : public Texture {
		protected:
			Pixmap3D pixmap;

		public:
			void loadSlice(const string &path, int slice);

			Pixmap3D *getPixmap() {
				return &pixmap;
			}
			const Pixmap3D *getPixmap() const {
				return &pixmap;
			}
			virtual string getPath() const;
			virtual void deletePixels();
			virtual std::size_t getPixelByteCount() const {
				return pixmap.getPixelByteCount();
			}

			virtual int getTextureWidth() const {
				return pixmap.getW();
			}
			virtual int getTextureHeight() const {
				return pixmap.getH();
			}

			virtual uint32 getCRC() {
				return pixmap.getCRC()->getSum();
			}
		};

		// =====================================================
		//	class TextureCube
		// =====================================================

		class TextureCube : public Texture {
		protected:
			PixmapCube pixmap;

		public:
			void loadFace(const string &path, int face);

			PixmapCube *getPixmap() {
				return &pixmap;
			}
			const PixmapCube *getPixmap() const {
				return &pixmap;
			}
			virtual string getPath() const;
			virtual void deletePixels();
			virtual std::size_t getPixelByteCount() const {
				return pixmap.getPixelByteCount();
			}

			virtual int getTextureWidth() const {
				return -1;
			}
			virtual int getTextureHeight() const {
				return -1;
			}

			virtual uint32 getCRC() {
				return pixmap.getCRC()->getSum();
			}
		};

	}
}//end namespace

#endif