mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-22 01:39:57 +00:00
88913c0139
This tries to make our code a bit more compliant with our code formatting conventions. For future use, this is the command I used: git ls-files "*.cpp" "*.h" | xargs sed -i -e 's/[ \t]*$//'
840 lines
29 KiB
C++
840 lines
29 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "sci/sci.h"
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#include "sci/util.h"
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#include "sci/engine/state.h"
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#include "sci/graphics/screen.h"
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#include "sci/graphics/palette.h"
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#include "sci/graphics/coordadjuster.h"
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#include "sci/graphics/view.h"
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namespace Sci {
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GfxView::GfxView(ResourceManager *resMan, GfxScreen *screen, GfxPalette *palette, GuiResourceId resourceId)
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: _resMan(resMan), _screen(screen), _palette(palette), _resourceId(resourceId) {
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assert(resourceId != -1);
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_coordAdjuster = g_sci->_gfxCoordAdjuster;
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initData(resourceId);
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}
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GfxView::~GfxView() {
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// Iterate through the loops
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for (uint16 loopNum = 0; loopNum < _loopCount; loopNum++) {
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// and through the cells of each loop
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for (uint16 celNum = 0; celNum < _loop[loopNum].celCount; celNum++) {
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delete[] _loop[loopNum].cel[celNum].rawBitmap;
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}
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delete[] _loop[loopNum].cel;
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}
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delete[] _loop;
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_resMan->unlockResource(_resource);
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}
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static const byte EGAmappingStraight[SCI_VIEW_EGAMAPPING_SIZE] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
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};
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void GfxView::initData(GuiResourceId resourceId) {
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_resource = _resMan->findResource(ResourceId(kResourceTypeView, resourceId), true);
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if (!_resource) {
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error("view resource %d not found", resourceId);
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}
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_resourceData = _resource->data;
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_resourceSize = _resource->size;
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byte *celData, *loopData;
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uint16 celOffset;
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CelInfo *cel;
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uint16 celCount = 0;
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uint16 mirrorBits = 0;
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uint32 palOffset = 0;
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uint16 headerSize = 0;
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uint16 loopSize = 0, celSize = 0;
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int loopNo, celNo, EGAmapNr;
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byte seekEntry;
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bool isEGA = false;
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bool isCompressed = true;
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ViewType curViewType = _resMan->getViewType();
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_loopCount = 0;
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_embeddedPal = false;
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_EGAmapping = NULL;
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_sci2ScaleRes = SCI_VIEW_NATIVERES_NONE;
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_isScaleable = true;
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// we adjust inside getCelRect for SCI0EARLY (that version didn't have the +1 when calculating bottom)
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_adjustForSci0Early = getSciVersion() == SCI_VERSION_0_EARLY ? -1 : 0;
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// If we find an SCI1/SCI1.1 view (not amiga), we switch to that type for
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// EGA. This could get used to make view patches for EGA games, where the
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// new views include more colors. Users could manually adjust old views to
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// make them look better (like removing dithered colors that aren't caught
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// by our undithering or even improve the graphics overall).
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if (curViewType == kViewEga) {
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if (_resourceData[1] == 0x80) {
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curViewType = kViewVga;
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} else {
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if (READ_LE_UINT16(_resourceData + 4) == 1)
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curViewType = kViewVga11;
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}
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}
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switch (curViewType) {
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case kViewEga: // SCI0 (and Amiga 16 colors)
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isEGA = true;
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case kViewAmiga: // Amiga ECS (32 colors)
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case kViewAmiga64: // Amiga AGA (64 colors)
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case kViewVga: // View-format SCI1
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// LoopCount:WORD MirrorMask:WORD Version:WORD PaletteOffset:WORD LoopOffset0:WORD LoopOffset1:WORD...
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_loopCount = _resourceData[0];
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// bit 0x8000 of _resourceData[1] means palette is set
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if (_resourceData[1] & 0x40)
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isCompressed = false;
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mirrorBits = READ_LE_UINT16(_resourceData + 2);
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palOffset = READ_LE_UINT16(_resourceData + 6);
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if (palOffset && palOffset != 0x100) {
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// Some SCI0/SCI01 games also have an offset set. It seems that it
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// points to a 16-byte mapping table but on those games using that
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// mapping will actually screw things up. On the other side: VGA
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// SCI1 games have this pointing to a VGA palette and EGA SCI1 games
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// have this pointing to a 8x16 byte mapping table that needs to get
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// applied then.
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if (!isEGA) {
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_palette->createFromData(&_resourceData[palOffset], _resourceSize - palOffset, &_viewPalette);
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_embeddedPal = true;
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} else {
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// Only use the EGA-mapping, when being SCI1 EGA
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// SCI1 VGA conversion games (which will get detected as SCI1EARLY/MIDDLE/LATE) have some views
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// with broken mapping tables. I guess those games won't use the mapping, so I rather disable it
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// for them
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if (getSciVersion() == SCI_VERSION_1_EGA_ONLY) {
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_EGAmapping = &_resourceData[palOffset];
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for (EGAmapNr = 0; EGAmapNr < SCI_VIEW_EGAMAPPING_COUNT; EGAmapNr++) {
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if (memcmp(_EGAmapping, EGAmappingStraight, SCI_VIEW_EGAMAPPING_SIZE) != 0)
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break;
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_EGAmapping += SCI_VIEW_EGAMAPPING_SIZE;
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}
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// If all mappings are "straight", then we actually ignore the mapping
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if (EGAmapNr == SCI_VIEW_EGAMAPPING_COUNT)
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_EGAmapping = NULL;
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else
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_EGAmapping = &_resourceData[palOffset];
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}
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}
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}
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_loop = new LoopInfo[_loopCount];
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for (loopNo = 0; loopNo < _loopCount; loopNo++) {
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loopData = _resourceData + READ_LE_UINT16(_resourceData + 8 + loopNo * 2);
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// CelCount:WORD Unknown:WORD CelOffset0:WORD CelOffset1:WORD...
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celCount = READ_LE_UINT16(loopData);
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_loop[loopNo].celCount = celCount;
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_loop[loopNo].mirrorFlag = mirrorBits & 1 ? true : false;
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mirrorBits >>= 1;
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// read cel info
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_loop[loopNo].cel = new CelInfo[celCount];
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for (celNo = 0; celNo < celCount; celNo++) {
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celOffset = READ_LE_UINT16(loopData + 4 + celNo * 2);
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celData = _resourceData + celOffset;
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// For VGA
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// Width:WORD Height:WORD DisplaceX:BYTE DisplaceY:BYTE ClearKey:BYTE Unknown:BYTE RLEData starts now directly
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// For EGA
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// Width:WORD Height:WORD DisplaceX:BYTE DisplaceY:BYTE ClearKey:BYTE EGAData starts now directly
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cel = &_loop[loopNo].cel[celNo];
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cel->scriptWidth = cel->width = READ_LE_UINT16(celData);
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cel->scriptHeight = cel->height = READ_LE_UINT16(celData + 2);
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cel->displaceX = (signed char)celData[4];
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cel->displaceY = celData[5];
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cel->clearKey = celData[6];
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if (isEGA) {
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cel->offsetEGA = celOffset + 7;
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cel->offsetRLE = 0;
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cel->offsetLiteral = 0;
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} else {
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cel->offsetEGA = 0;
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if (isCompressed) {
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cel->offsetRLE = celOffset + 8;
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cel->offsetLiteral = 0;
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} else {
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cel->offsetRLE = 0;
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cel->offsetLiteral = celOffset + 8;
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}
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}
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cel->rawBitmap = 0;
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if (_loop[loopNo].mirrorFlag)
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cel->displaceX = -cel->displaceX;
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}
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}
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break;
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case kViewVga11: // View-format SCI1.1+
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// HeaderSize:WORD LoopCount:BYTE Flags:BYTE Version:WORD Unknown:WORD PaletteOffset:WORD
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headerSize = READ_SCI11ENDIAN_UINT16(_resourceData + 0) + 2; // headerSize is not part of the header, so it's added
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assert(headerSize >= 16);
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_loopCount = _resourceData[2];
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assert(_loopCount);
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palOffset = READ_SCI11ENDIAN_UINT32(_resourceData + 8);
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// For SCI32, this is a scale flag
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if (getSciVersion() >= SCI_VERSION_2) {
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_sci2ScaleRes = (Sci32ViewNativeResolution)_resourceData[5];
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if (_screen->getUpscaledHires() == GFX_SCREEN_UPSCALED_DISABLED)
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_sci2ScaleRes = SCI_VIEW_NATIVERES_NONE;
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}
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// flags is actually a bit-mask
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// it seems it was only used for some early sci1.1 games (or even just laura bow 2)
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// later interpreters dont support it at all anymore
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// we assume that if flags is 0h the view does not support flags and default to scaleable
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// if it's 1h then we assume that the view is not to be scaled
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// if it's 40h then we assume that the view is scaleable
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switch (_resourceData[3]) {
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case 1:
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_isScaleable = false;
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break;
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case 0x40:
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case 0:
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break; // don't do anything, we already have _isScaleable set
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default:
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error("unsupported flags byte (%d) inside sci1.1 view", _resourceData[3]);
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break;
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}
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loopData = _resourceData + headerSize;
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loopSize = _resourceData[12];
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assert(loopSize >= 16);
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celSize = _resourceData[13];
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assert(celSize >= 32);
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if (palOffset) {
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_palette->createFromData(&_resourceData[palOffset], _resourceSize - palOffset, &_viewPalette);
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_embeddedPal = true;
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}
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_loop = new LoopInfo[_loopCount];
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for (loopNo = 0; loopNo < _loopCount; loopNo++) {
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loopData = _resourceData + headerSize + (loopNo * loopSize);
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seekEntry = loopData[0];
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if (seekEntry != 255) {
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if (seekEntry >= _loopCount)
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error("Bad loop-pointer in sci 1.1 view");
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_loop[loopNo].mirrorFlag = true;
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loopData = _resourceData + headerSize + (seekEntry * loopSize);
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} else {
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_loop[loopNo].mirrorFlag = false;
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}
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celCount = loopData[2];
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_loop[loopNo].celCount = celCount;
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celData = _resourceData + READ_SCI11ENDIAN_UINT32(loopData + 12);
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// read cel info
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_loop[loopNo].cel = new CelInfo[celCount];
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for (celNo = 0; celNo < celCount; celNo++) {
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cel = &_loop[loopNo].cel[celNo];
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cel->scriptWidth = cel->width = READ_SCI11ENDIAN_UINT16(celData);
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cel->scriptHeight = cel->height = READ_SCI11ENDIAN_UINT16(celData + 2);
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cel->displaceX = READ_SCI11ENDIAN_UINT16(celData + 4);
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cel->displaceY = READ_SCI11ENDIAN_UINT16(celData + 6);
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if (cel->displaceY < 0)
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cel->displaceY += 255; // sierra did this adjust in their sci1.1 getCelRect() - not sure about sci32
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assert(cel->width && cel->height);
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cel->clearKey = celData[8];
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cel->offsetEGA = 0;
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cel->offsetRLE = READ_SCI11ENDIAN_UINT32(celData + 24);
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cel->offsetLiteral = READ_SCI11ENDIAN_UINT32(celData + 28);
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// GK1-hires content is actually uncompressed, we need to swap both so that we process it as such
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if ((cel->offsetRLE) && (!cel->offsetLiteral))
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SWAP(cel->offsetRLE, cel->offsetLiteral);
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cel->rawBitmap = 0;
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if (_loop[loopNo].mirrorFlag)
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cel->displaceX = -cel->displaceX;
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celData += celSize;
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}
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}
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#ifdef ENABLE_SCI32
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// adjust width/height returned to scripts
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if (_sci2ScaleRes != SCI_VIEW_NATIVERES_NONE) {
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for (loopNo = 0; loopNo < _loopCount; loopNo++)
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for (celNo = 0; celNo < _loop[loopNo].celCount; celNo++)
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_screen->adjustBackUpscaledCoordinates(_loop[loopNo].cel[celNo].scriptWidth, _loop[loopNo].cel[celNo].scriptHeight, _sci2ScaleRes);
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} else if (getSciVersion() == SCI_VERSION_2_1) {
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for (loopNo = 0; loopNo < _loopCount; loopNo++)
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for (celNo = 0; celNo < _loop[loopNo].celCount; celNo++)
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_coordAdjuster->fromDisplayToScript(_loop[loopNo].cel[celNo].scriptHeight, _loop[loopNo].cel[celNo].scriptWidth);
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}
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#endif
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break;
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default:
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error("ViewType was not detected, can't continue");
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}
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}
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GuiResourceId GfxView::getResourceId() const {
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return _resourceId;
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}
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int16 GfxView::getWidth(int16 loopNo, int16 celNo) const {
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return _loopCount ? getCelInfo(loopNo, celNo)->width : 0;
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}
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int16 GfxView::getHeight(int16 loopNo, int16 celNo) const {
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return _loopCount ? getCelInfo(loopNo, celNo)->height : 0;
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}
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const CelInfo *GfxView::getCelInfo(int16 loopNo, int16 celNo) const {
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assert(_loopCount);
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loopNo = CLIP<int16>(loopNo, 0, _loopCount - 1);
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celNo = CLIP<int16>(celNo, 0, _loop[loopNo].celCount - 1);
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return &_loop[loopNo].cel[celNo];
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}
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uint16 GfxView::getCelCount(int16 loopNo) const {
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assert(_loopCount);
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loopNo = CLIP<int16>(loopNo, 0, _loopCount - 1);
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return _loop[loopNo].celCount;
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}
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Palette *GfxView::getPalette() {
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return _embeddedPal ? &_viewPalette : NULL;
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}
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bool GfxView::isSci2Hires() {
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return _sci2ScaleRes > SCI_VIEW_NATIVERES_320x200;
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}
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bool GfxView::isScaleable() {
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return _isScaleable;
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}
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void GfxView::getCelRect(int16 loopNo, int16 celNo, int16 x, int16 y, int16 z, Common::Rect &outRect) const {
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const CelInfo *celInfo = getCelInfo(loopNo, celNo);
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outRect.left = x + celInfo->displaceX - (celInfo->width >> 1);
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outRect.right = outRect.left + celInfo->width;
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outRect.bottom = y + celInfo->displaceY - z + 1 + _adjustForSci0Early;
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outRect.top = outRect.bottom - celInfo->height;
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}
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void GfxView::getCelSpecialHoyle4Rect(int16 loopNo, int16 celNo, int16 x, int16 y, int16 z, Common::Rect &outRect) const {
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const CelInfo *celInfo = getCelInfo(loopNo, celNo);
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int16 adjustY = y + celInfo->displaceY - celInfo->height + 1;
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int16 adjustX = x + celInfo->displaceX - ((celInfo->width - 1) >> 1);
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outRect.translate(adjustX, adjustY);
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}
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void GfxView::getCelScaledRect(int16 loopNo, int16 celNo, int16 x, int16 y, int16 z, int16 scaleX, int16 scaleY, Common::Rect &outRect) const {
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int16 scaledDisplaceX, scaledDisplaceY;
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int16 scaledWidth, scaledHeight;
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const CelInfo *celInfo = getCelInfo(loopNo, celNo);
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// Scaling displaceX/Y, Width/Height
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scaledDisplaceX = (celInfo->displaceX * scaleX) >> 7;
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scaledDisplaceY = (celInfo->displaceY * scaleY) >> 7;
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scaledWidth = (celInfo->width * scaleX) >> 7;
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scaledHeight = (celInfo->height * scaleY) >> 7;
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scaledWidth = CLIP<int16>(scaledWidth, 0, _screen->getWidth());
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scaledHeight = CLIP<int16>(scaledHeight, 0, _screen->getHeight());
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outRect.left = x + scaledDisplaceX - (scaledWidth >> 1);
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outRect.right = outRect.left + scaledWidth;
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outRect.bottom = y + scaledDisplaceY - z + 1;
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outRect.top = outRect.bottom - scaledHeight;
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}
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void unpackCelData(byte *inBuffer, byte *celBitmap, byte clearColor, int pixelCount, int rlePos, int literalPos, ViewType viewType, uint16 width, bool isMacSci11ViewData) {
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byte *outPtr = celBitmap;
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byte curByte, runLength;
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byte *rlePtr = inBuffer + rlePos;
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// The existence of a literal position pointer signifies data with two
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// separate streams, most likely a SCI1.1 view
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byte *literalPtr = inBuffer + literalPos;
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int pixelNr = 0;
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memset(celBitmap, clearColor, pixelCount);
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// View unpacking:
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//
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// EGA:
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// Each byte is like XXXXYYYY (XXXX: 0 - 15, YYYY: 0 - 15)
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// Set the next XXXX pixels to YYYY
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//
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// Amiga:
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// Each byte is like XXXXXYYY (XXXXX: 0 - 31, YYY: 0 - 7)
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// - Case A: YYY != 0
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// Set the next YYY pixels to XXXXX
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// - Case B: YYY == 0
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// Skip the next XXXXX pixels (i.e. transparency)
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//
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// Amiga 64:
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// Each byte is like XXYYYYYY (XX: 0 - 3, YYYYYY: 0 - 63)
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// - Case A: XX != 0
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// Set the next XX pixels to YYYYYY
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// - Case B: XX == 0
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// Skip the next YYYYYY pixels (i.e. transparency)
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//
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// VGA:
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// Each byte is like XXYYYYYY (YYYYY: 0 - 63)
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// - Case A: XX == 00 (binary)
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// Copy next YYYYYY bytes as-is
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// - Case B: XX == 01 (binary)
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// Same as above, copy YYYYYY + 64 bytes as-is
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// - Case C: XX == 10 (binary)
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// Set the next YYYYY pixels to the next byte value
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// - Case D: XX == 11 (binary)
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// Skip the next YYYYY pixels (i.e. transparency)
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if (literalPos && isMacSci11ViewData) {
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// KQ6/Freddy Pharkas use byte lengths, all others use uint16
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// The SCI devs must have realized that a max of 255 pixels wide
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// was not very good for 320 or 640 width games.
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bool hasByteLengths = (g_sci->getGameId() == GID_KQ6 || g_sci->getGameId() == GID_FREDDYPHARKAS);
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// compression for SCI1.1+ Mac
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while (pixelNr < pixelCount) {
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uint32 pixelLine = pixelNr;
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if (hasByteLengths) {
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pixelNr += *rlePtr++;
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runLength = *rlePtr++;
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} else {
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pixelNr += READ_BE_UINT16(rlePtr);
|
|
runLength = READ_BE_UINT16(rlePtr + 2);
|
|
rlePtr += 4;
|
|
}
|
|
|
|
while (runLength-- && pixelNr < pixelCount)
|
|
outPtr[pixelNr++] = *literalPtr++;
|
|
|
|
pixelNr = pixelLine + width;
|
|
}
|
|
return;
|
|
}
|
|
|
|
switch (viewType) {
|
|
case kViewEga:
|
|
while (pixelNr < pixelCount) {
|
|
curByte = *rlePtr++;
|
|
runLength = curByte >> 4;
|
|
memset(outPtr + pixelNr, curByte & 0x0F, MIN<uint16>(runLength, pixelCount - pixelNr));
|
|
pixelNr += runLength;
|
|
}
|
|
break;
|
|
case kViewAmiga:
|
|
while (pixelNr < pixelCount) {
|
|
curByte = *rlePtr++;
|
|
if (curByte & 0x07) { // fill with color
|
|
runLength = curByte & 0x07;
|
|
curByte = curByte >> 3;
|
|
memset(outPtr + pixelNr, curByte, MIN<uint16>(runLength, pixelCount - pixelNr));
|
|
} else { // skip the next pixels (transparency)
|
|
runLength = curByte >> 3;
|
|
}
|
|
pixelNr += runLength;
|
|
}
|
|
break;
|
|
case kViewAmiga64:
|
|
while (pixelNr < pixelCount) {
|
|
curByte = *rlePtr++;
|
|
if (curByte & 0xC0) { // fill with color
|
|
runLength = curByte >> 6;
|
|
memset(outPtr + pixelNr, curByte & 0x3F, MIN<uint16>(runLength, pixelCount - pixelNr));
|
|
} else { // skip the next pixels (transparency)
|
|
runLength = curByte & 0x3F;
|
|
}
|
|
pixelNr += runLength;
|
|
}
|
|
break;
|
|
case kViewVga:
|
|
case kViewVga11:
|
|
// If we have no RLE data, the image is just uncompressed
|
|
if (rlePos == 0) {
|
|
memcpy(outPtr, literalPtr, pixelCount);
|
|
break;
|
|
}
|
|
|
|
while (pixelNr < pixelCount) {
|
|
curByte = *rlePtr++;
|
|
runLength = curByte & 0x3F;
|
|
|
|
switch (curByte & 0xC0) {
|
|
case 0x40: // copy bytes as is (In copy case, runLength can go up to 127 i.e. pixel & 0x40). Fixes bug #3135872.
|
|
runLength += 64;
|
|
case 0x00: // copy bytes as-is
|
|
if (!literalPos) {
|
|
memcpy(outPtr + pixelNr, rlePtr, MIN<uint16>(runLength, pixelCount - pixelNr));
|
|
rlePtr += runLength;
|
|
} else {
|
|
memcpy(outPtr + pixelNr, literalPtr, MIN<uint16>(runLength, pixelCount - pixelNr));
|
|
literalPtr += runLength;
|
|
}
|
|
break;
|
|
case 0x80: // fill with color
|
|
if (!literalPos)
|
|
memset(outPtr + pixelNr, *rlePtr++, MIN<uint16>(runLength, pixelCount - pixelNr));
|
|
else
|
|
memset(outPtr + pixelNr, *literalPtr++, MIN<uint16>(runLength, pixelCount - pixelNr));
|
|
break;
|
|
case 0xC0: // skip the next pixels (transparency)
|
|
break;
|
|
}
|
|
|
|
pixelNr += runLength;
|
|
}
|
|
break;
|
|
default:
|
|
error("Unsupported picture viewtype");
|
|
}
|
|
}
|
|
|
|
void GfxView::unpackCel(int16 loopNo, int16 celNo, byte *outPtr, uint32 pixelCount) {
|
|
const CelInfo *celInfo = getCelInfo(loopNo, celNo);
|
|
|
|
if (celInfo->offsetEGA) {
|
|
// decompression for EGA views
|
|
unpackCelData(_resourceData, outPtr, 0, pixelCount, celInfo->offsetEGA, 0, _resMan->getViewType(), celInfo->width, false);
|
|
} else {
|
|
// We fill the buffer with transparent pixels, so that we can later skip
|
|
// over pixels to automatically have them transparent
|
|
// Also some RLE compressed cels are possibly ending with the last
|
|
// non-transparent pixel (is this even possible with the current code?)
|
|
byte clearColor = _loop[loopNo].cel[celNo].clearKey;
|
|
|
|
// Since Mac OS required palette index 0 to be white and 0xff to be black, the
|
|
// Mac SCI devs decided that rather than change scripts and various pieces of
|
|
// code, that they would just put a little snippet of code to swap these colors
|
|
// in various places around the SCI codebase. We figured that it would be less
|
|
// hacky to swap pixels instead and run the Mac games with a PC palette.
|
|
if (g_sci->getPlatform() == Common::kPlatformMacintosh && getSciVersion() >= SCI_VERSION_1_1) {
|
|
// clearColor is based on PC palette, but the literal data is not.
|
|
// We flip clearColor here to make it match the literal data. All
|
|
// these pixels will be flipped back again below.
|
|
if (clearColor == 0)
|
|
clearColor = 0xff;
|
|
else if (clearColor == 0xff)
|
|
clearColor = 0;
|
|
}
|
|
|
|
bool isMacSci11ViewData = g_sci->getPlatform() == Common::kPlatformMacintosh && getSciVersion() == SCI_VERSION_1_1;
|
|
unpackCelData(_resourceData, outPtr, clearColor, pixelCount, celInfo->offsetRLE, celInfo->offsetLiteral, _resMan->getViewType(), celInfo->width, isMacSci11ViewData);
|
|
|
|
// Swap 0 and 0xff pixels for Mac SCI1.1+ games (see above)
|
|
if (g_sci->getPlatform() == Common::kPlatformMacintosh && getSciVersion() >= SCI_VERSION_1_1) {
|
|
for (uint32 i = 0; i < pixelCount; i++) {
|
|
if (outPtr[i] == 0)
|
|
outPtr[i] = 0xff;
|
|
else if (outPtr[i] == 0xff)
|
|
outPtr[i] = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
const byte *GfxView::getBitmap(int16 loopNo, int16 celNo) {
|
|
loopNo = CLIP<int16>(loopNo, 0, _loopCount -1);
|
|
celNo = CLIP<int16>(celNo, 0, _loop[loopNo].celCount - 1);
|
|
if (_loop[loopNo].cel[celNo].rawBitmap)
|
|
return _loop[loopNo].cel[celNo].rawBitmap;
|
|
|
|
uint16 width = _loop[loopNo].cel[celNo].width;
|
|
uint16 height = _loop[loopNo].cel[celNo].height;
|
|
// allocating memory to store cel's bitmap
|
|
int pixelCount = width * height;
|
|
_loop[loopNo].cel[celNo].rawBitmap = new byte[pixelCount];
|
|
byte *pBitmap = _loop[loopNo].cel[celNo].rawBitmap;
|
|
|
|
// unpack the actual cel bitmap data
|
|
unpackCel(loopNo, celNo, pBitmap, pixelCount);
|
|
|
|
if (_resMan->getViewType() == kViewEga)
|
|
unditherBitmap(pBitmap, width, height, _loop[loopNo].cel[celNo].clearKey);
|
|
|
|
// mirroring the cel if needed
|
|
if (_loop[loopNo].mirrorFlag) {
|
|
for (int i = 0; i < height; i++, pBitmap += width)
|
|
for (int j = 0; j < width / 2; j++)
|
|
SWAP(pBitmap[j], pBitmap[width - j - 1]);
|
|
}
|
|
return _loop[loopNo].cel[celNo].rawBitmap;
|
|
}
|
|
|
|
/**
|
|
* Called after unpacking an EGA cel, this will try to undither (parts) of the
|
|
* cel if the dithering in here matches dithering used by the current picture.
|
|
*/
|
|
void GfxView::unditherBitmap(byte *bitmapPtr, int16 width, int16 height, byte clearKey) {
|
|
int16 *ditheredPicColors = _screen->unditherGetDitheredBgColors();
|
|
|
|
// It makes no sense to go further, if there isn't any dithered color data
|
|
// available for the current picture
|
|
if (!ditheredPicColors)
|
|
return;
|
|
|
|
// We need at least a 4x2 bitmap for this algorithm to work
|
|
if (width < 4 || height < 2)
|
|
return;
|
|
|
|
// If EGA mapping is used for this view, dont do undithering as well
|
|
if (_EGAmapping)
|
|
return;
|
|
|
|
// Walk through the bitmap and remember all combinations of colors
|
|
int16 ditheredBitmapColors[DITHERED_BG_COLORS_SIZE];
|
|
byte *curPtr;
|
|
byte color1, color2;
|
|
byte nextColor1, nextColor2;
|
|
int16 y, x;
|
|
|
|
memset(&ditheredBitmapColors, 0, sizeof(ditheredBitmapColors));
|
|
|
|
// Count all seemingly dithered pixel-combinations as soon as at least 4
|
|
// pixels are adjacent and check pixels in the following line as well to
|
|
// be the reverse pixel combination
|
|
int16 checkHeight = height - 1;
|
|
curPtr = bitmapPtr;
|
|
byte *nextPtr = curPtr + width;
|
|
for (y = 0; y < checkHeight; y++) {
|
|
color1 = curPtr[0]; color2 = (curPtr[1] << 4) | curPtr[2];
|
|
nextColor1 = nextPtr[0] << 4; nextColor2 = (nextPtr[2] << 4) | nextPtr[1];
|
|
curPtr += 3;
|
|
nextPtr += 3;
|
|
for (x = 3; x < width; x++) {
|
|
color1 = (color1 << 4) | (color2 >> 4);
|
|
color2 = (color2 << 4) | *curPtr++;
|
|
nextColor1 = (nextColor1 >> 4) | (nextColor2 << 4);
|
|
nextColor2 = (nextColor2 >> 4) | *nextPtr++ << 4;
|
|
if ((color1 == color2) && (color1 == nextColor1) && (color1 == nextColor2))
|
|
ditheredBitmapColors[color1]++;
|
|
}
|
|
}
|
|
|
|
// Now compare both dither color tables to find out matching dithered color
|
|
// combinations
|
|
bool unditherTable[DITHERED_BG_COLORS_SIZE];
|
|
byte color, unditherCount = 0;
|
|
memset(&unditherTable, false, sizeof(unditherTable));
|
|
for (color = 0; color < 255; color++) {
|
|
if ((ditheredBitmapColors[color] > 5) && (ditheredPicColors[color] > 200)) {
|
|
// match found, check if colorKey is contained -> if so, we ignore
|
|
// of course
|
|
color1 = color & 0x0F; color2 = color >> 4;
|
|
if ((color1 != clearKey) && (color2 != clearKey) && (color1 != color2)) {
|
|
// so set this and the reversed color-combination for undithering
|
|
unditherTable[color] = true;
|
|
unditherTable[(color1 << 4) | color2] = true;
|
|
unditherCount++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Nothing found to undither -> exit straight away
|
|
if (!unditherCount)
|
|
return;
|
|
|
|
// We now need to replace color-combinations
|
|
curPtr = bitmapPtr;
|
|
for (y = 0; y < height; y++) {
|
|
color = *curPtr;
|
|
for (x = 1; x < width; x++) {
|
|
color = (color << 4) | curPtr[1];
|
|
if (unditherTable[color]) {
|
|
// Some color with black? Turn colors around, otherwise it won't
|
|
// be the right color at all.
|
|
byte unditheredColor = color;
|
|
if ((color & 0xF0) == 0)
|
|
unditheredColor = (color << 4) | (color >> 4);
|
|
curPtr[0] = unditheredColor; curPtr[1] = unditheredColor;
|
|
}
|
|
curPtr++;
|
|
}
|
|
curPtr++;
|
|
}
|
|
}
|
|
|
|
void GfxView::draw(const Common::Rect &rect, const Common::Rect &clipRect, const Common::Rect &clipRectTranslated,
|
|
int16 loopNo, int16 celNo, byte priority, uint16 EGAmappingNr, bool upscaledHires) {
|
|
const Palette *palette = _embeddedPal ? &_viewPalette : &_palette->_sysPalette;
|
|
const CelInfo *celInfo = getCelInfo(loopNo, celNo);
|
|
const byte *bitmap = getBitmap(loopNo, celNo);
|
|
const int16 celHeight = celInfo->height;
|
|
const int16 celWidth = celInfo->width;
|
|
const byte clearKey = celInfo->clearKey;
|
|
const byte drawMask = priority > 15 ? GFX_SCREEN_MASK_VISUAL : GFX_SCREEN_MASK_VISUAL|GFX_SCREEN_MASK_PRIORITY;
|
|
int x, y;
|
|
|
|
if (_embeddedPal)
|
|
// Merge view palette in...
|
|
_palette->set(&_viewPalette, false);
|
|
|
|
const int16 width = MIN(clipRect.width(), celWidth);
|
|
const int16 height = MIN(clipRect.height(), celHeight);
|
|
|
|
bitmap += (clipRect.top - rect.top) * celWidth + (clipRect.left - rect.left);
|
|
|
|
if (!_EGAmapping) {
|
|
for (y = 0; y < height; y++, bitmap += celWidth) {
|
|
for (x = 0; x < width; x++) {
|
|
const byte color = bitmap[x];
|
|
if (color != clearKey) {
|
|
const int x2 = clipRectTranslated.left + x;
|
|
const int y2 = clipRectTranslated.top + y;
|
|
if (!upscaledHires) {
|
|
if (priority >= _screen->getPriority(x2, y2))
|
|
_screen->putPixel(x2, y2, drawMask, palette->mapping[color], priority, 0);
|
|
} else {
|
|
// UpscaledHires means view is hires and is supposed to
|
|
// get drawn onto lowres screen.
|
|
// FIXME(?): we can't read priority directly with the
|
|
// hires coordinates. May not be needed at all in kq6
|
|
// FIXME: Handle proper aspect ratio. Some GK1 hires images
|
|
// are in 640x400 instead of 640x480
|
|
_screen->putPixelOnDisplay(x2, y2, palette->mapping[color]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
byte *EGAmapping = _EGAmapping + (EGAmappingNr * SCI_VIEW_EGAMAPPING_SIZE);
|
|
for (y = 0; y < height; y++, bitmap += celWidth) {
|
|
for (x = 0; x < width; x++) {
|
|
const byte color = EGAmapping[bitmap[x]];
|
|
const int x2 = clipRectTranslated.left + x;
|
|
const int y2 = clipRectTranslated.top + y;
|
|
if (color != clearKey && priority >= _screen->getPriority(x2, y2))
|
|
_screen->putPixel(x2, y2, drawMask, color, priority, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* We don't fully follow sierra sci here, I did the scaling algo myself and it
|
|
* is definitely not pixel-perfect with the one sierra is using. It shouldn't
|
|
* matter because the scaled cel rect is definitely the same as in sierra sci.
|
|
*/
|
|
void GfxView::drawScaled(const Common::Rect &rect, const Common::Rect &clipRect, const Common::Rect &clipRectTranslated,
|
|
int16 loopNo, int16 celNo, byte priority, int16 scaleX, int16 scaleY) {
|
|
const Palette *palette = _embeddedPal ? &_viewPalette : &_palette->_sysPalette;
|
|
const CelInfo *celInfo = getCelInfo(loopNo, celNo);
|
|
const byte *bitmap = getBitmap(loopNo, celNo);
|
|
const int16 celHeight = celInfo->height;
|
|
const int16 celWidth = celInfo->width;
|
|
const byte clearKey = celInfo->clearKey;
|
|
const byte drawMask = priority > 15 ? GFX_SCREEN_MASK_VISUAL : GFX_SCREEN_MASK_VISUAL|GFX_SCREEN_MASK_PRIORITY;
|
|
uint16 scalingX[640];
|
|
uint16 scalingY[480];
|
|
int16 scaledWidth, scaledHeight;
|
|
int pixelNo, scaledPixel, scaledPixelNo, prevScaledPixelNo;
|
|
|
|
if (_embeddedPal)
|
|
// Merge view palette in...
|
|
_palette->set(&_viewPalette, false);
|
|
|
|
scaledWidth = (celInfo->width * scaleX) >> 7;
|
|
scaledHeight = (celInfo->height * scaleY) >> 7;
|
|
scaledWidth = CLIP<int16>(scaledWidth, 0, _screen->getWidth());
|
|
scaledHeight = CLIP<int16>(scaledHeight, 0, _screen->getHeight());
|
|
|
|
// Do we really need to do this?!
|
|
//memset(scalingX, 0, sizeof(scalingX));
|
|
//memset(scalingY, 0, sizeof(scalingY));
|
|
|
|
// Create height scaling table
|
|
pixelNo = 0;
|
|
scaledPixel = scaledPixelNo = prevScaledPixelNo = 0;
|
|
while (pixelNo < celHeight) {
|
|
scaledPixelNo = scaledPixel >> 7;
|
|
assert(scaledPixelNo < ARRAYSIZE(scalingY));
|
|
for (; prevScaledPixelNo <= scaledPixelNo; prevScaledPixelNo++)
|
|
scalingY[prevScaledPixelNo] = pixelNo;
|
|
pixelNo++;
|
|
scaledPixel += scaleY;
|
|
}
|
|
pixelNo--;
|
|
scaledPixelNo++;
|
|
for (; scaledPixelNo < scaledHeight; scaledPixelNo++)
|
|
scalingY[scaledPixelNo] = pixelNo;
|
|
|
|
// Create width scaling table
|
|
pixelNo = 0;
|
|
scaledPixel = scaledPixelNo = prevScaledPixelNo = 0;
|
|
while (pixelNo < celWidth) {
|
|
scaledPixelNo = scaledPixel >> 7;
|
|
assert(scaledPixelNo < ARRAYSIZE(scalingX));
|
|
for (; prevScaledPixelNo <= scaledPixelNo; prevScaledPixelNo++)
|
|
scalingX[prevScaledPixelNo] = pixelNo;
|
|
pixelNo++;
|
|
scaledPixel += scaleX;
|
|
}
|
|
pixelNo--;
|
|
scaledPixelNo++;
|
|
for (; scaledPixelNo < scaledWidth; scaledPixelNo++)
|
|
scalingX[scaledPixelNo] = pixelNo;
|
|
|
|
scaledWidth = MIN(clipRect.width(), scaledWidth);
|
|
scaledHeight = MIN(clipRect.height(), scaledHeight);
|
|
|
|
const int16 offsetY = clipRect.top - rect.top;
|
|
const int16 offsetX = clipRect.left - rect.left;
|
|
|
|
// Happens in SQ6, first room
|
|
if (offsetX < 0 || offsetY < 0)
|
|
return;
|
|
|
|
assert(scaledHeight + offsetY <= ARRAYSIZE(scalingY));
|
|
assert(scaledWidth + offsetX <= ARRAYSIZE(scalingX));
|
|
for (int y = 0; y < scaledHeight; y++) {
|
|
for (int x = 0; x < scaledWidth; x++) {
|
|
const byte color = bitmap[scalingY[y + offsetY] * celWidth + scalingX[x + offsetX]];
|
|
const int x2 = clipRectTranslated.left + x;
|
|
const int y2 = clipRectTranslated.top + y;
|
|
if (color != clearKey && priority >= _screen->getPriority(x2, y2)) {
|
|
_screen->putPixel(x2, y2, drawMask, palette->mapping[color], priority, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void GfxView::adjustToUpscaledCoordinates(int16 &y, int16 &x) {
|
|
_screen->adjustToUpscaledCoordinates(y, x, _sci2ScaleRes);
|
|
}
|
|
|
|
void GfxView::adjustBackUpscaledCoordinates(int16 &y, int16 &x) {
|
|
_screen->adjustBackUpscaledCoordinates(y, x, _sci2ScaleRes);
|
|
}
|
|
|
|
} // End of namespace Sci
|