188 lines
8.6 KiB
C++
188 lines
8.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* of the License, or(at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef AGS_PLUGINS_AGS_PAL_RENDER_PAL_RENDER_H
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#define AGS_PLUGINS_AGS_PAL_RENDER_PAL_RENDER_H
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#include "ags/lib/allegro.h"
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#include "ags/plugins/ags_plugin.h"
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#include "ags/plugins/plugin_base.h"
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#include "common/algorithm.h"
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namespace AGS3 {
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namespace Plugins {
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namespace AGSPalRender {
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struct PALSTRUCT {
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byte r;
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byte b;
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byte g;
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};
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extern IAGSEngine *engine;
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extern unsigned char clut[65536];
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extern unsigned char cycle_remap [256];
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extern const int alphamultiply [4096];
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extern PALSTRUCT objectivepal[256];
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// this class exists solely to take advantage of g++'s
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// -fvisibility-inlines-hidden option, so that these
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// methods can be inlined without any trace or complaint
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class Mix {
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public:
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//unsigned char MixColorAlpha (unsigned char fg,unsigned char bg,unsigned char alpha);
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//unsigned char MixColorAdditive (unsigned char fg,unsigned char bg,unsigned char alpha);
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static unsigned char MixColorAlpha(unsigned char fg, unsigned char bg, unsigned char alpha, int use_objpal = 0) {
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unsigned char rfg = cycle_remap[fg]; //Automatic remapping of palette slots.
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//unsigned char rbg = cycle_remap [bg]; //Saves on typing elsewhere.
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AGSColor *palette = engine->GetPalette();
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int i = 0;
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//int out_r = (palette[fg].r>>1) * alpha + (palette[bg].r>>1) * (255 - alpha);
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//int out_g = palette[fg].g * alpha + palette[bg].g * (255 - alpha);
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//int out_b = (palette[fg].b>>1) * alpha + (palette[bg].b>>1) * (255 - alpha);
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int out_r, out_g, out_b;
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if (use_objpal == 0) {
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out_r = (objectivepal[rfg].r >> 1) *alpha + (palette[bg].r >> 1) *(255 - alpha);
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out_g = objectivepal[rfg].g * alpha + palette[bg].g * (255 - alpha);
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out_b = (objectivepal[rfg].b >> 1) *alpha + (palette[bg].b >> 1) *(255 - alpha);
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} else {
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out_r = (objectivepal[rfg].r >> 1) *alpha + (objectivepal[bg].r >> 1) *(255 - alpha);
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out_g = objectivepal[rfg].g * alpha + objectivepal[bg].g * (255 - alpha);
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out_b = (objectivepal[rfg].b >> 1) *alpha + (objectivepal[bg].b >> 1) *(255 - alpha);
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}
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//char ralpha = MAX(0,MIN(63,alpha>>2));
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//unsigned char invralpha = 64-ralpha;
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//if (ralpha > alpha) engine->AbortGame ("oops");
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//int out_r = alphamultiply[((palette[fg].r>>1)<<6) +ralpha] + alphamultiply[((palette[bg].r>>1)<<6) +(invralpha)];
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//int out_g = alphamultiply[((palette[fg].g) <<6) +ralpha] + alphamultiply[((palette[bg].g) <<6) +(invralpha)];
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//int out_b = alphamultiply[((palette[fg].b>>1)<<6) +ralpha] + alphamultiply[((palette[bg].b>>1)<<6) +(invralpha)];
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out_r = (out_r + 1 + (out_r >> 8)) >> 8;
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out_g = (out_g + 1 + (out_g >> 8)) >> 8;
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out_b = (out_b + 1 + (out_b >> 8)) >> 8;
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//out_r = (out_r + 1 + (out_r >> 6)) >> 6;
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//out_g = (out_g + 1 + (out_g >> 6)) >> 6;
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//out_b = (out_b + 1 + (out_b >> 6)) >> 6;
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i = ((out_r << 11) | (out_g << 5) | out_b);
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unsigned char *clutp = clut;
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//unsigned char result = cycle_remap [clut[i>>8][i%256]]; //Once again, to make sure that the palette slot used is the right one.
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return cycle_remap[*(clutp + i)]; //Once again, to make sure that the palette slot used is the right one.
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//engine->ReleaseBitmapSurface (clutspr);
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}
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static unsigned char MixColorLightLevel(unsigned char fg, unsigned char intensity) {
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unsigned char rfg = cycle_remap [fg]; //Automatic remapping of palette slots.
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int i = 0;
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//int dark_r = (((palette[fg].r>>1) * (intensity))>>8);
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//int dark_b = (((palette[fg].b>>1) * (intensity))>>8);
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//int dark_g = (((palette[fg].g) * (intensity))>>8);
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int dark_r = (((objectivepal[rfg].r >> 1) * (intensity)) >> 8);
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int dark_b = (((objectivepal[rfg].b >> 1) * (intensity)) >> 8);
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int dark_g = (((objectivepal[rfg].g) * (intensity)) >> 8);
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i = ((dark_r << 11) | (dark_g << 5) | dark_b);
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unsigned char *clutp = clut;
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return cycle_remap [*(clutp + i)]; //Once again, to make sure that the palette slot used is the right one.
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}
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static unsigned char MixColorAdditive(unsigned char fg, unsigned char bg, unsigned char alpha, int use_objpal = 0) {
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unsigned char rfg = cycle_remap[fg]; //Automatic remapping of palette slots.
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//unsigned char rbg = cycle_remap[bg]; //Saves on typing elsewhere.
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//BITMAP *clutspr = engine->GetSpriteGraphic (clutslot);
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//if (!clutspr) engine->AbortGame ("MixColorAlpha: Can't load CLUT sprite into memory.");
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//uint8 *clutarray = engine->GetRawBitmapSurface (clutspr);
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AGSColor *palette = engine->GetPalette();
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int i = 0;
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int add_r, add_b, add_g = 0;
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//char ralpha = MAX(0,MIN(63,alpha>>2));
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//add_r = (((palette[fg].r>>1) * (alpha))>>8);
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//add_b = (((palette[fg].b>>1) * (alpha))>>8);
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//add_g = (((palette[fg].g) * (alpha))>>8);
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add_r = (((objectivepal[rfg].r >> 1) * (alpha)) >> 8);
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add_b = (((objectivepal[rfg].b >> 1) * (alpha)) >> 8);
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add_g = (((objectivepal[rfg].g) * (alpha)) >> 8);
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//int a_g = MAX(0,MIN(63,alpha>>2));
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//add_r = ((alphamultiply[(palette[fg].r>>1)<<6)+ralpha])>>6);
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//add_b = ((alphamultiply[(palette[fg].b>>1)<<6)+ralpha])>>6);
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//add_g = ((alphamultiply[(palette[fg].g) <<6)+ralpha])>>6);
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//int out_r = MIN(31,(palette[bg].r>>1) + add_r);
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//int out_g = MIN(63, palette[bg].g + add_g);
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//int out_b = MIN(31,(palette[bg].b>>1) + add_b);
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int out_r, out_g, out_b;
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if (use_objpal == 0) {
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out_r = MIN(31, (palette[bg].r >> 1) + add_r);
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out_g = MIN(63, palette[bg].g + add_g);
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out_b = MIN(31, (palette[bg].b >> 1) + add_b);
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} else {
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out_r = MIN(31, (objectivepal [bg].r >> 1) + add_r);
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out_g = MIN(63, objectivepal [bg].g + add_g);
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out_b = MIN(31, (objectivepal [bg].b >> 1) + add_b);
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}
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i = ((out_r << 11) | (out_g << 5) | out_b);
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unsigned char *clutp = clut;
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unsigned char result = cycle_remap [*(clutp + i)]; //Once again, to make sure that the palette slot used is the right one.
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//unsigned char result = cycle_remap [clut[i>>8][i%256]]; //Once again, to make sure that the palette slot used is the right one.
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//engine->ReleaseBitmapSurface (clutspr);
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return result;
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}
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static unsigned char MixColorMultiply(unsigned char fg, unsigned char bg, unsigned char alpha, int use_objpal = 0) {
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unsigned char rfg = cycle_remap [fg]; //Automatic remapping of palette slots.
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unsigned char rbg = cycle_remap [bg]; //Saves on typing elsewhere.
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AGSColor *palette = engine->GetPalette();
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int i = 0;
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int mul_r, mul_b, mul_g = 0;
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int out_r, out_g, out_b = 0;
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if (use_objpal == 0) {
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mul_r = ((objectivepal[rfg].r >> 1) * (palette[rbg].r >> 1)) / 64;
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mul_b = ((objectivepal[rfg].b >> 1) * (palette[rbg].b >> 1)) / 64;
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mul_g = ((objectivepal[rfg].g * palette[rbg].g) / 64);
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out_r = ((palette[rbg].r >> 1) * (63 - (alpha / 4)) + (mul_r * (alpha / 4))) / 63;
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out_g = (palette[rbg].g * (63 - (alpha / 4)) + (mul_g * (alpha / 4))) / 63;
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out_b = ((palette[rbg].b >> 1) * (63 - (alpha / 4)) + (mul_b * (alpha / 4))) / 63;
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} else {
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mul_r = ((objectivepal[rfg].r >> 1) * (objectivepal[rbg].r >> 1)) / 64;
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mul_b = ((objectivepal[rfg].b >> 1) * (objectivepal[rbg].b >> 1)) / 64;
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mul_g = ((objectivepal[rfg].g * objectivepal[rbg].g) / 64);
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out_r = ((objectivepal[rbg].r >> 1) * (63 - (alpha / 4)) + (mul_r * (alpha / 4))) / 63;
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out_g = (objectivepal[rbg].g * (63 - (alpha / 4)) + (mul_g * (alpha / 4))) / 63;
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out_b = ((objectivepal[rbg].b >> 1) * (63 - (alpha / 4)) + (mul_b * (alpha / 4))) / 63;
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}
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i = ((out_r << 11) | (out_g << 5) | out_b);
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unsigned char *clutp = clut;
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unsigned char result = cycle_remap [*(clutp + i)]; //Once again, to make sure that the palette slot used is the right one.
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//unsigned char result = cycle_remap [clut[i>>8][i%256]]; //Once again, to make sure that the palette slot used is the right one.
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//engine->ReleaseBitmapSurface (clutspr);
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return result;
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}
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};
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void GetColor565(ScriptMethodParams ¶ms);
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unsigned short root(unsigned short x);
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float FastSin(float x);
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float FastCos(float x);
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} // namespace AGSPalRender
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} // namespace Plugins
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} // namespace AGS3
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#endif
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