70 lines
2.6 KiB
C++
70 lines
2.6 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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* (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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#include "common/system.h"
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#include "sci/graphics/drivers/gfxdriver_intern.h"
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namespace Sci {
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class SCI1_VGAGreyScaleDriver final : public GfxDefaultDriver {
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public:
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SCI1_VGAGreyScaleDriver(bool rgbRendering);
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~SCI1_VGAGreyScaleDriver() override;
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void setPalette(const byte *colors, uint start, uint num, bool update, const PaletteMod *palMods, const byte *palModMapping) override;
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static bool validateMode(Common::Platform p) { return (p == Common::kPlatformDOS || p == Common::kPlatformWindows) && checkDriver(&_driverFile, 1); }
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private:
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byte *_greyScalePalette;
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static const char *_driverFile;
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};
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SCI1_VGAGreyScaleDriver::SCI1_VGAGreyScaleDriver(bool rgbRendering) : GfxDefaultDriver(320, 200, false, rgbRendering), _greyScalePalette(nullptr) {
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_greyScalePalette = new byte[_numColors * 3]();
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}
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SCI1_VGAGreyScaleDriver::~SCI1_VGAGreyScaleDriver() {
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delete[] _greyScalePalette;
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}
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void SCI1_VGAGreyScaleDriver::setPalette(const byte *colors, uint start, uint num, bool update, const PaletteMod *palMods, const byte *palModMapping) {
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GFXDRV_ASSERT_READY;
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byte *d = _greyScalePalette;
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for (uint i = 0; i < num; ++i) {
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// In the driver files I inspected there were never any other color distributions than this.
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// So I guess it is safe to hardcode that instead of loading it from the driver file.
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d[0] = d[1] = d[2] = (colors[0] * 77 + colors[1] * 150 + colors[2] * 28) >> 8;
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colors += 3;
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d += 3;
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}
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GfxDefaultDriver::setPalette(_greyScalePalette, start, num, update, palMods, palModMapping);
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}
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const char *SCI1_VGAGreyScaleDriver::_driverFile = "VGA320BW.DRV";
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SCI_GFXDRV_VALIDATE_IMPL(SCI1_VGAGreyScale)
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GfxDriver *SCI1_VGAGreyScaleDriver_create(int rgbRendering, ...) {
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return new SCI1_VGAGreyScaleDriver(rgbRendering != 0);
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}
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} // End of namespace Sci
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