author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 16:21:04 +0300 | |
changeset 36 | 01a6848ebfd7 |
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: Appearance interface |
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* |
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*/ |
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#ifndef __M3G_APPEARANCE_H__ |
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#define __M3G_APPEARANCE_H__ |
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/*! |
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* \internal |
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* \file |
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* \brief Appearance interface |
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*/ |
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#include "m3g_object.h" |
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#include "m3g_compositingmode.h" |
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#include "m3g_polygonmode.h" |
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#include "m3g_material.h" |
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#include "m3g_texture.h" |
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#include "m3g_fog.h" |
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#include "m3g_rendercontext.h" |
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/* Limits for user settable layer */ |
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#define M3G_APPEARANCE_MIN_LAYER -63 |
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#define M3G_APPEARANCE_MAX_LAYER 63 |
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#define M3G_APPEARANCE_HARD_SORT_BITS 8 |
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typedef /*@dependent@*//*@null@*/ Texture *TexturePtr; |
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/*! |
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* \internal |
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* \brief Appearance object |
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*/ |
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struct M3GAppearanceImpl |
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{ |
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Object object; |
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/*@dependent@*//*@null@*/ |
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Material *material; |
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/*@dependent@*//*@null@*/ |
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CompositingMode *compositingMode; |
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/*@dependent@*//*@null@*/ |
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PolygonMode *polygonMode; |
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/*@dependent@*//*@null@*/ |
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Fog *fog; |
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TexturePtr texture[M3G_NUM_TEXTURE_UNITS]; |
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M3Guint sortKey; |
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M3Gshort layer; |
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M3Gushort vertexMask; |
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}; |
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/*---------------------------------------------------------------------- |
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* Internal functions |
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*--------------------------------------------------------------------*/ |
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static void m3gApplyAppearance(const Appearance *appearance, |
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RenderContext *ctx, |
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M3Gint alphaFactor); |
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/*! |
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* \internal |
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* \brief Get vertex mask |
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* |
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* \param app Appearance object |
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* \return vertex mask |
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*/ |
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static M3G_INLINE M3Gbitmask m3gGetVertexMask(const Appearance *app) |
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{ |
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return app->vertexMask; |
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} |
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/*! |
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* \internal |
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* \brief Shortcut getter for color mask |
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*/ |
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static M3G_INLINE M3Gbool m3gColorMask(const Appearance *app) |
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{ |
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if (app) { |
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const CompositingMode *cm = app->compositingMode; |
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return !cm || cm->colorWrite; |
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} |
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return M3G_FALSE; |
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} |
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/*! |
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* \internal |
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* \brief Shortcut getter for alpha mask |
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*/ |
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static M3G_INLINE M3Gbool m3gAlphaMask(const Appearance *app) |
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{ |
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if (app) { |
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const CompositingMode *cm = app->compositingMode; |
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return !cm || cm->alphaWrite; |
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} |
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return M3G_FALSE; |
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} |
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|
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/*! |
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* \internal |
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* \brief Get sortkey for render queue |
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* |
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* Sort key is a combination of user settable layer and |
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* blending mode. Blended objects are always drawn last. |
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* |
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* \param appearance Appearance object |
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* \return sort key |
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*/ |
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static M3G_INLINE M3Guint m3gGetAppearanceSortKey(const Appearance *appearance) |
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{ |
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if (appearance) { |
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M3Guint key = appearance->sortKey; |
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|
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/* The blending state bit is set dynamically, as it may change |
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* without changing the appearance (we have no signaling from |
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* CompositingMode for that) */ |
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|
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if (appearance->compositingMode != NULL |
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&& appearance->compositingMode->blendingMode != M3G_REPLACE) { |
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key |= (1u << (32 - M3G_APPEARANCE_HARD_SORT_BITS)); |
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} |
0
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|
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if (m3gGetColorMaskWorkaround(M3G_INTERFACE(appearance))) { |
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/* Override the top 2 bits of the sorting key so that ColorMask |
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* changes are minimized */ |
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if (appearance) { |
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key &= ~(0x03 << 22); |
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key |= (((M3Guint) m3gColorMask(appearance)) & 1) << 23; |
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key |= (((M3Guint) m3gAlphaMask(appearance)) & 1) << 22; |
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} |
0
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} |
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|
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return key; |
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} |
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|
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return M3G_FALSE; |
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} |
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|
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/*! |
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* \internal |
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* \brief Release the textures bound for this appearance |
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*/ |
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static void m3gReleaseTextures(const Appearance *appearance); |
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|
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#endif /*__M3G_APPEARANCE_H__*/ |