d07c171f |
1 | /* |
2 | Copyright (C) 2003 Rice1964 |
3 | |
4 | This program is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU General Public License |
6 | as published by the Free Software Foundation; either version 2 |
7 | of the License, or (at your option) any later version. |
8 | |
9 | This program is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | GNU General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU General Public License |
15 | along with this program; if not, write to the Free Software |
16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
17 | */ |
18 | |
19 | #include "OGLDecodedMux.h" |
20 | |
21 | //======================================================================== |
22 | void COGLDecodedMux::Simplify(void) |
23 | { |
24 | DecodedMux::Simplify(); |
25 | } |
26 | |
27 | void COGLDecodedMux::Reformat(void) |
28 | { |
29 | DecodedMux::Reformat(); |
30 | mType = max(max(max(splitType[0], splitType[1]),splitType[2]),splitType[3]); |
31 | } |
32 | |
33 | void COGLExtDecodedMux::Simplify(void) |
34 | //======================================================================== |
35 | { |
36 | COGLDecodedMux::Simplify(); |
37 | FurtherFormatForOGL2(); |
38 | Reformat(); // Reformat again |
39 | } |
40 | |
41 | void COGLExtDecodedMux::FurtherFormatForOGL2(void) |
42 | { |
43 | // This function is used by OGL 1.2, no need to call this function |
44 | // for Nvidia register combiner |
45 | |
46 | // And OGL 1.2 extension only supports 1 constant color, we can not use both PRIM and ENV |
47 | // constant color, and we can not use SPECULAR color as the 2nd color. |
48 | |
49 | // To futher format the mux. |
50 | // - For each stage, allow only 1 texel, change the 2nd texel in the same stage to MUX_SHADE |
51 | // - Only allow 1 constant color. Count PRIM and ENV, left the most used one, and change |
52 | // the 2nd one to MUX_SHADE |
53 | |
54 | if( Count(MUX_PRIM) >= Count(MUX_ENV) ) |
55 | { |
56 | ReplaceVal(MUX_ENV, MUX_PRIM); |
57 | //ReplaceVal(MUX_ENV, MUX_SHADE); |
58 | //ReplaceVal(MUX_ENV, MUX_1); |
59 | //ReplaceVal(MUX_PRIM, MUX_0); |
60 | } |
61 | else |
62 | { |
63 | //ReplaceVal(MUX_PRIM, MUX_ENV); |
64 | //ReplaceVal(MUX_PRIM, MUX_SHADE); |
65 | ReplaceVal(MUX_PRIM, MUX_0); |
66 | } |
67 | |
68 | /* |
69 | // Because OGL 1.2, we may use more than 1 texture unit, but for each texture unit, |
70 | // we can not use multitexture to do color combiner. Each combiner stage can only |
71 | // use 1 texture. |
72 | |
73 | if( isUsed(MUX_TEXEL0) && isUsed(MUX_TEXEL1) ) |
74 | { |
75 | if( Count(MUX_TEXEL0,0)+Count(MUX_TEXEL0,1) >= Count(MUX_TEXEL1,0)+Count(MUX_TEXEL1,1) ) |
76 | { |
77 | ReplaceVal(MUX_TEXEL1, MUX_TEXEL0, 0); |
78 | ReplaceVal(MUX_TEXEL1, MUX_TEXEL0, 1); |
79 | } |
80 | else |
81 | { |
82 | ReplaceVal(MUX_TEXEL0, MUX_TEXEL1, 0); |
83 | ReplaceVal(MUX_TEXEL0, MUX_TEXEL1, 1); |
84 | } |
85 | |
86 | if( Count(MUX_TEXEL0,2)+Count(MUX_TEXEL0,3) >= Count(MUX_TEXEL1,2)+Count(MUX_TEXEL1,3) ) |
87 | { |
88 | ReplaceVal(MUX_TEXEL1, MUX_TEXEL0, 2); |
89 | ReplaceVal(MUX_TEXEL1, MUX_TEXEL0, 3); |
90 | } |
91 | else |
92 | { |
93 | ReplaceVal(MUX_TEXEL0, MUX_TEXEL1, 2); |
94 | ReplaceVal(MUX_TEXEL0, MUX_TEXEL1, 3); |
95 | } |
96 | } |
97 | */ |
98 | } |
99 | |
100 | |
101 | void COGLExtDecodedMuxTNT2::FurtherFormatForOGL2(void) |
102 | { |
103 | if( Count(MUX_PRIM) >= Count(MUX_ENV) ) |
104 | { |
105 | //ReplaceVal(MUX_ENV, MUX_PRIM); |
106 | //ReplaceVal(MUX_ENV, MUX_SHADE); |
107 | ReplaceVal(MUX_ENV, MUX_1); |
108 | //ReplaceVal(MUX_PRIM, MUX_0); |
109 | } |
110 | else |
111 | { |
112 | //ReplaceVal(MUX_PRIM, MUX_ENV); |
113 | //ReplaceVal(MUX_PRIM, MUX_SHADE); |
114 | ReplaceVal(MUX_PRIM, MUX_0); |
115 | } |
116 | } |
117 | |