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1 | /****************************************************************************** |
2 | * Arachnoid Graphics Plugin for Mupen64Plus |
3 | * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/ |
4 | * |
5 | * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson |
6 | * |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License |
9 | * as published by the Free Software Foundation; either version 2 |
10 | * of the License, or (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program; if not, write to the Free Software |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
20 | *****************************************************************************/ |
21 | |
22 | #include "RSPLightManager.h" |
23 | #include "Memory.h" |
24 | #include "MathLib.h" |
25 | #include "GBI.h" |
26 | #include "Logger.h" |
27 | |
28 | #define RGBA_GETALPHA(rgb) ((rgb) >> 24) |
29 | #define RGBA_GETRED(rgb) (((rgb) >> 16) & 0xff) |
30 | #define RGBA_GETGREEN(rgb) (((rgb) >> 8) & 0xff) |
31 | #define RGBA_GETBLUE(rgb) ((rgb) & 0xff) |
32 | |
33 | //----------------------------------------------------------------------------- |
34 | //! Constructor |
35 | //----------------------------------------------------------------------------- |
36 | RSPLightManager::RSPLightManager() |
37 | { |
38 | } |
39 | |
40 | //----------------------------------------------------------------------------- |
41 | //! Destructor |
42 | //----------------------------------------------------------------------------- |
43 | RSPLightManager::~RSPLightManager() |
44 | { |
45 | } |
46 | |
47 | bool RSPLightManager::initialize(Memory* memory) |
48 | { |
49 | m_memory = memory; |
50 | m_numLights = 0; |
51 | m_lightEnabled = false; |
52 | |
53 | return true; |
54 | } |
55 | |
56 | //----------------------------------------------------------------------------- |
57 | // Set Light |
58 | //----------------------------------------------------------------------------- |
59 | void RSPLightManager::setLight( unsigned int lightIndex, unsigned int rdramAddress ) |
60 | { |
61 | //Error control |
62 | if ((rdramAddress + sizeof(RDRAMLight)) > m_memory->getRDRAMSize() ) { |
63 | return; |
64 | } |
65 | |
66 | //Get Light from memory |
67 | RDRAMLight* light = (RDRAMLight*)m_memory->getRDRAM(rdramAddress); |
68 | |
69 | if ( lightIndex < 8 ) //Only supports 8 lights |
70 | { |
71 | m_lights[lightIndex].r = light->r * 0.0039215689f; //Convert from 0-255 to 0-1 |
72 | m_lights[lightIndex].g = light->g * 0.0039215689f; |
73 | m_lights[lightIndex].b = light->b * 0.0039215689f; |
74 | |
75 | m_lights[lightIndex].x = light->x; |
76 | m_lights[lightIndex].y = light->y; |
77 | m_lights[lightIndex].z = light->z; |
78 | |
79 | Vec3Normalize( &m_lights[lightIndex].x ); |
80 | } |
81 | } |
82 | |
83 | //----------------------------------------------------------------------------- |
84 | // Set Num Lights |
85 | //----------------------------------------------------------------------------- |
86 | void RSPLightManager::setNumLights(int numLights) |
87 | { |
88 | if (numLights <= 8) |
89 | { |
90 | m_numLights = numLights; |
91 | } |
92 | } |
93 | |
94 | //----------------------------------------------------------------------------- |
95 | // Set Light Color |
96 | //----------------------------------------------------------------------------- |
97 | void RSPLightManager::setLightColor( unsigned int lightIndex, unsigned int packedColor ) |
98 | { |
99 | if (lightIndex < 8) |
100 | { |
101 | m_lights[lightIndex].r = _SHIFTR( packedColor, 24, 8 ) * 0.0039215689f; |
102 | m_lights[lightIndex].g = _SHIFTR( packedColor, 16, 8 ) * 0.0039215689f; |
103 | m_lights[lightIndex].b = _SHIFTR( packedColor, 8, 8 ) * 0.0039215689f; |
104 | } |
105 | } |