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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: VertexArray interface
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*
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*/
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#ifndef __M3G_VERTEXARRAY_H__
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#define __M3G_VERTEXARRAY_H__
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/*!
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* \internal
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* \file
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* \brief VertexArray 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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/*!
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* \internal
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* \brief \c VertexArray object instance
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*/
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struct M3GVertexArrayImpl
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{
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Object object;
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M3Gsizei vertexCount;
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M3Gint mapCount;
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M3Guint numLocks;
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GLint elementSize;
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GLenum elementType;
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GLsizei stride;
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M3GMemObject data;
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M3Gshort rangeMin, rangeMax;
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/*!
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* \internal
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* \brief Cached color array(s?) with premultiplied alpha
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*/
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M3GMemObject cachedColors;
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/*!
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* \internal
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* \brief Alpha factor for currently stored scaled colors
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*
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* anything below zero is considered a dirty value
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*/
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M3Gint cachedAlphaFactor;
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M3Gint timestamp;
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};
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/* If this assert fails, check the compiler padding settings */
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M3G_CT_ASSERT(sizeof(VertexArray) == sizeof(Object) + 44);
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/*----------------------------------------------------------------------
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* Internal functions
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*--------------------------------------------------------------------*/
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static void m3gLockColorArray (const VertexArray *array, M3Gint alphaFactor);
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static void m3gLockNormalArray (const VertexArray *array);
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static void m3gLockTexCoordArray(const VertexArray *array);
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static void m3gLockVertexArray (const VertexArray *array);
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static void m3gUnlockArray (const VertexArray *array);
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static M3Gbool m3gCreateAlphaColorCache(VertexArray *array);
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static VertexArray *m3gCloneVertexArray(const VertexArray *array);
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static M3Gint m3gGetArrayVertexCount (const VertexArray *array);
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static M3Gbool m3gIsCompatible (const VertexArray *array, const VertexArray *other);
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static M3Gint m3gGetArrayTimestamp(const VertexArray *array);
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static void m3gGetArrayBoundingBox(const VertexArray *array, M3Gshort *boundingBox);
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static M3Gbool m3gGetCoordinates(VertexArray *va,
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M3Gint elementCount,
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M3Gint idx,
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M3Gfloat *v);
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static void m3gGetArrayValueRange(const VertexArray *array,
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M3Gint *minValue, M3Gint *maxValue);
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#endif /*__M3G_VERTEXARRAY_H__*/
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