Mercurial > fife-parpg

annotate engine/core/video/sdl/sdlblendingfunctions.cpp @ 343:8e71629c4c43

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Several changes to layer, camera and map dialogs: * Renamed CameraEditor and LayerEditor to CameraDialog and LayerDialog * Moved CameraDialog and LayerDialog into their own modules in scripts.gui so other components can use them. * Prettier camera dialog * Added LayerDialog to map wizard
author cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
date Tue, 25 Aug 2009 01:21:00 +0000
parents 90005975cdbb
children
rev   line source
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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1 /***************************************************************************
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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2 * Copyright (C) 2005-2008 by the FIFE team *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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3 * http://www.fifengine.de *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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4 * This file is part of FIFE. *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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5 * *
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90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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6 * FIFE is free software; you can redistribute it and/or *
90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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7 * modify it under the terms of the GNU Lesser General Public *
90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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8 * License as published by the Free Software Foundation; either *
90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
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9 * version 2.1 of the License, or (at your option) any later version. *
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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10 * *
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90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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11 * This library is distributed in the hope that it will be useful, *
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4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
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14 * Lesser General Public License for more details. *
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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15 * *
46
90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
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16 * You should have received a copy of the GNU Lesser General Public *
90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
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17 * License along with this library; if not, write to the *
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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18 * Free Software Foundation, Inc., *
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90005975cdbb * Final LGPL switch step by adjusting the file headers
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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20 ***************************************************************************/
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21
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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22 // Standard C++ library includes
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23
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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24 // 3rd party library includes
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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25
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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26 // FIFE includes
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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27 // These includes are split up in two parts, separated by one empty line
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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28 // First block: files included from the FIFE root src directory
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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29 // Second block: files included from the same folder
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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30 #include "sdlblendingfunctions.h"
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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31
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32 namespace FIFE {
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33
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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34 struct ColorRGB8 {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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35 unsigned char r, g, b;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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36 };
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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37
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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38 struct ColorRGBA8 {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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39 unsigned char r, g, b, a;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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40 };
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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41
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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42 void SDL_BlendRow_RGBA8_to_RGBA8( const unsigned char* src, unsigned char* dst, unsigned int alpha, int n ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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43 const ColorRGBA8* srcColor = reinterpret_cast< const ColorRGBA8* >( src );
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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44 ColorRGBA8* dstColor = reinterpret_cast< ColorRGBA8* >( dst );
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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45
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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46 for( int i = n; 0 < i; --i ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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47 register unsigned int aMulA = alpha * srcColor->a;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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48
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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49 if( aMulA ) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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50 register unsigned int OneMin_aMulA = 65535 - aMulA;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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51 dstColor->r = ( aMulA * srcColor->r + OneMin_aMulA * dstColor->r ) >> 16;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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52 dstColor->g = ( aMulA * srcColor->g + OneMin_aMulA * dstColor->g ) >> 16;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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53 dstColor->b = ( aMulA * srcColor->b + OneMin_aMulA * dstColor->b ) >> 16;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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54 dstColor->a = 255;
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55 }
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56 ++dstColor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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57 ++srcColor;
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58 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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59 }
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60
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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61 void SDL_BlendRow_RGBA8_to_RGB8( const unsigned char* src, unsigned char* dst, unsigned int alpha, int n ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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62 const ColorRGBA8* srcColor = reinterpret_cast< const ColorRGBA8* >( src );
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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63 ColorRGB8* dstColor = reinterpret_cast< ColorRGB8* >( dst );
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64
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65 for( int i = n; 0 < i; --i ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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66 register unsigned int aMulA = alpha * srcColor->a;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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67 if( aMulA ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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68 register unsigned int OneMin_aMulA = 65535 - aMulA;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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69 dstColor->r = ( aMulA * srcColor->r + OneMin_aMulA * dstColor->r ) >> 16;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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70 dstColor->g = ( aMulA * srcColor->g + OneMin_aMulA * dstColor->g ) >> 16;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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71 dstColor->b = ( aMulA * srcColor->b + OneMin_aMulA * dstColor->b ) >> 16;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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72 }
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73
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74 ++dstColor;
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75 ++srcColor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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76 }
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77 }
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78
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79 void SDL_BlendRow_RGBA8_to_RGB565( const unsigned char* src, unsigned char* dst, unsigned int alpha, int n ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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80 const ColorRGBA8* srcColor = reinterpret_cast< const ColorRGBA8* >( src );
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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81 unsigned short* dstColor = reinterpret_cast< unsigned short* >( dst );
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82
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83 for( int i = n; 0 < i; --i ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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84 register unsigned int aMulA = ( alpha * srcColor->a ) >> 8;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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85 if( aMulA ) {
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86 register unsigned int OneMin_aMulA = 255 - aMulA;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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87 register unsigned int c = *dstColor;
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88 *dstColor = ( ( ( srcColor->b * aMulA ) +
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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89 ( ( ( c & 0xF800 ) >> 8 ) * OneMin_aMulA ) ) & 0xF800 ) |
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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90 ( ( ( ( srcColor->g * aMulA ) +
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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91 ( ( ( c & 0x07E0 ) >> 3 ) * OneMin_aMulA ) ) >> 5 ) & 0x07E0 ) |
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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92 ( ( ( ( srcColor->r * aMulA ) +
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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93 ( ( ( c & 0x001F ) << 3 ) * OneMin_aMulA ) ) >> 11 ) & 0x001F );
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94 }
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95
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96 ++dstColor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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97 ++srcColor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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98 }
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99 }
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100
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101
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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102 void SDL_BlendRow_RGBA4_to_RGB565( const unsigned char* src, unsigned char* dst, unsigned int alpha, int n ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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103 const unsigned short* srcColor = reinterpret_cast< const unsigned short* >( src );
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
104 unsigned short* dstColor = reinterpret_cast< unsigned short* >( dst );
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
105
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
106 for( int i = n; 0 < i; --i ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
107 register unsigned int c1 = *dstColor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
108 register unsigned int c2 = *srcColor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
109
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
110 unsigned int aMulA = c2 & 0xF;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
111 aMulA = ( alpha * aMulA ) / 15; ///< upgrade to range 0-255
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
112 if( aMulA ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
113 register unsigned int OneMin_aMulA = 255 - aMulA;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
114 register unsigned int result;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
115 result = ( ( ( ( c2 & 0xF000 ) | 0x0800 ) * aMulA ) + ( ( c1 & 0xF800 ) * OneMin_aMulA ) ) & 0xF80000;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
116 result |= ( ( ( ( ( c2 & 0x0F00 ) >> 1 ) | 0x0040 ) * aMulA ) + ( ( c1 & 0x07E0 ) * OneMin_aMulA ) ) & 0x07E000;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
117 result |= ( ( ( ( ( c2 & 0x00F0 ) >> 3 ) | 0x0001 ) * aMulA ) + ( ( c1 & 0x001F ) * OneMin_aMulA ) ) & 0x001F00;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
118 /// multiplying by alpha resulted in shift.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
119 *dstColor = static_cast< unsigned short int >( result >> 8 );
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
120 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
121
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
122 ++dstColor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
123 ++srcColor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
124 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
125 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
126
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
127 }