author | William Roberts <williamr@symbian.org> |
Fri, 23 Jul 2010 14:07:53 +0100 | |
branch | GCC_SURGE |
changeset 129 | 4b6914ffcd6b |
parent 0 | 5d03bc08d59c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Image interface |
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* |
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*/ |
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#ifndef __M3G_IMAGE_H__ |
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#define __M3G_IMAGE_H__ |
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/*! |
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* \internal |
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* \file |
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* \brief Image interface |
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*/ |
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#include "m3g_object.h" |
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#include "m3g_gl.h" |
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#if !defined(M3G_NGL_TEXTURE_API) |
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typedef struct LargeImageImpl LargeImage; |
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#endif |
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/*! |
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* \internal |
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* \brief Image object |
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*/ |
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struct M3GImageImpl |
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{ |
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Object object; |
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M3Gint width, height; |
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M3GImageFormat format; |
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M3GPixelFormat internalFormat; |
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Image *powerOfTwo; |
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GLenum glFormat; |
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# if !defined(M3G_NGL_TEXTURE_API) |
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GLuint texObject; |
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LargeImage *large; /*! \internal \ */ |
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# endif |
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M3GMemObject data; |
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M3GMemObject mipData; |
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M3Gsizei paletteBytes; |
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M3Gbitmask flags : 8; /* flags defined in m3g_core.h */ |
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M3Gbitmask special : 8; /* flags defined below */ |
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M3Gbool pinned : 1; /* image can not be deleted */ |
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M3Gbool dirty : 1; |
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M3Gbool powerOfTwoDirty : 1; |
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M3Gbool mipDataMapCount : 4; /* max. 16 concurrent uses */ |
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# if !defined(M3G_NGL_TEXTURE_API) |
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M3Gbool mipmapsDirty : 1; /*!< \internal 'dirty' overrides this */ |
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# endif |
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/* For easy cloning of immutable images without replicating the |
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* data, we must keep a reference to the original so that it isn't |
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* deleted until we are */ |
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Image *copyOf; |
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}; |
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/*! |
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* \internal \brief "special" flag bits */ |
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#define IMG_NPOT 0x01 |
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#define IMG_LARGE 0x02 |
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/*---------------------------------------------------------------------- |
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* Internal functions |
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*--------------------------------------------------------------------*/ |
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static void m3gBindTextureImage(Image *img, M3Genum levelFilter, M3Genum imageFilter); |
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static void m3gReleaseTextureImage(Image *img); |
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static Image *m3gGetPowerOfTwoImage(Image *img); |
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static M3GPixelFormat m3gPixelFormat (M3GImageFormat format); |
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static M3Gint m3gBytesPerPixel(M3GPixelFormat format); |
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static void m3gConvertPixels(M3GPixelFormat srcFormat, const M3Gubyte *src, |
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M3GPixelFormat dstFormat, M3Gubyte *dst, |
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M3Gsizei count); |
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static void m3gConvertPixelRect( |
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M3GPixelFormat srcFormat, const M3Gubyte *src, M3Gsizei srcStride, |
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M3Gsizei width, M3Gsizei height, |
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M3GPixelFormat dstFormat, M3Gubyte *dst, M3Gsizei dstStride); |
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static void m3gCopyImagePixels(Image *dst, const Image *src); |
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#if !defined(M3G_NGL_TEXTURE_API) |
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static void m3gCopyFrameBufferImage(Image *dst); |
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static void m3gDrawFrameBufferImage(RenderContext *ctx, const Image *src); |
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#endif /* !defined(M3G_NGL_TEXTURE_API)*/ |
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static void m3gInvalidateImage(Image *img); |
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#if defined(M3G_NGL_TEXTURE_API) |
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static M3Gbool m3gValidateMipmapMemory(Image *img); |
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#endif |
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/*! \internal */ |
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static M3Gsizei m3gGetImageStride(const Image *img); |
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static M3Gint m3gGetAlpha(Image *image, M3Gint x, M3Gint y); |
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static M3G_INLINE M3Gbool m3gIsInternallyPaletted(const Image *img) |
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{ |
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return (img->paletteBytes > 0); |
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} |
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#if 0 |
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/*! |
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* \internal |
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* \brief Type-safe helper function |
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*/ |
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static M3G_INLINE void m3gDeleteImage(Image *img) |
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{ |
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m3gDeleteObject((Object*) img); |
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} |
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#endif |
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#endif /*__M3G_IMAGE_H__*/ |