| 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 | |