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author | Colin Snover | 2016-02-17 18:15:54 -0600 |
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committer | Colin Snover | 2016-02-18 13:18:02 -0600 |
commit | 775c39102a8999e7ea62313ce00b4b3f51780fc7 (patch) | |
tree | b3f5c0ed78ef85addab3119e9b4f5794c262a78c | |
parent | 2c0e64fdaf8f2ec2b28124d488be68f36cb25317 (diff) | |
download | scummvm-rg350-775c39102a8999e7ea62313ce00b4b3f51780fc7.tar.gz scummvm-rg350-775c39102a8999e7ea62313ce00b4b3f51780fc7.tar.bz2 scummvm-rg350-775c39102a8999e7ea62313ce00b4b3f51780fc7.zip |
SCI: Implement templated drawing subroutines
-rw-r--r-- | engines/sci/graphics/celobj32.cpp | 445 | ||||
-rw-r--r-- | engines/sci/graphics/celobj32.h | 11 |
2 files changed, 256 insertions, 200 deletions
diff --git a/engines/sci/graphics/celobj32.cpp b/engines/sci/graphics/celobj32.cpp index 4b8d9af384..e0f5668206 100644 --- a/engines/sci/graphics/celobj32.cpp +++ b/engines/sci/graphics/celobj32.cpp @@ -97,6 +97,178 @@ void CelObj::deinit() { _cache = nullptr; } +#pragma mark - +#pragma mark CelObj - Scalers + +template <bool FLIP, typename READER> +struct SCALER_NoScale { + const byte *_row; + READER _reader; + const int16 _lastIndex; + + SCALER_NoScale(const CelObj &celObj, const int16 maxWidth) : + _reader(celObj, maxWidth), + _lastIndex(maxWidth - 1) {} + + inline void setSource(const int16 x, const int16 y) { + _row = _reader.getRow(y); + + if (FLIP) { + _row += _lastIndex - x; + } else { + _row += x; + } + } + + inline byte read() { + if (FLIP) { + return *_row--; + } else { + return *_row++; + } + } +}; + +template<bool FLIP, typename READER> +struct SCALER_Scale { + const byte *_row; + READER _reader; + const CelScalerTable *_table; + int16 _x; + const uint16 _lastIndex; + + SCALER_Scale(const CelObj &celObj, const int16 maxWidth, const Ratio scaleX, const Ratio scaleY) : + // The maximum width of the scaled object may not be as + // wide as the source data it requires if downscaling, + // so just always make the reader decompress an entire + // line of source data when scaling + _reader(celObj, celObj._width), + _lastIndex(maxWidth - 1), + _table(CelObj::_scaler->getScalerTable(scaleX, scaleY)) {} + + inline void setSource(const int16 x, const int16 y) { + _row = _reader.getRow(_table->valuesY[y]); + if (FLIP) { + _x = _lastIndex - x; + } else { + _x = x; + } + } + + inline byte read() { + if (FLIP) { + return _row[_table->valuesX[_x--]]; + } else { + return _row[_table->valuesX[_x++]]; + } + } +}; + +#pragma mark - +#pragma mark CelObj - Resource readers + +struct READER_Uncompressed { +private: + byte *_pixels; + const int16 _sourceWidth; + const int16 _maxWidth; + +public: + READER_Uncompressed(const CelObj &celObj, const int16 maxWidth) : + _sourceWidth(celObj._width), + _maxWidth(maxWidth) { + byte *resource = celObj.getResPointer(); + _pixels = resource + READ_SCI11ENDIAN_UINT32(resource + celObj._celHeaderOffset + 24); + } + + inline const byte *getRow(const int16 y) const { + return _pixels + y * _sourceWidth; + } +}; + +struct READER_Compressed { +private: + byte *_resource; + byte _buffer[1024]; + uint32 _controlOffset; + uint32 _dataOffset; + uint32 _uncompressedDataOffset; + int16 _y; + const int16 _sourceHeight; + const uint8 _transparentColor; + const int16 _maxWidth; + +public: + READER_Compressed(const CelObj &celObj, const int16 maxWidth) : + _y(-1), + _maxWidth(maxWidth), + _resource(celObj.getResPointer()), + _sourceHeight(celObj._height), + _transparentColor(celObj._transparentColor) { + assert(_maxWidth <= celObj._width); + + byte *celHeader = _resource + celObj._celHeaderOffset; + _dataOffset = READ_SCI11ENDIAN_UINT32(celHeader + 24); + _uncompressedDataOffset = READ_SCI11ENDIAN_UINT32(celHeader + 28); + _controlOffset = READ_SCI11ENDIAN_UINT32(celHeader + 32); + } + + inline const byte *getRow(const int16 y) { + if (y != _y) { + // compressed data segment for row + byte *row = _resource + _dataOffset + READ_SCI11ENDIAN_UINT32(_resource + _controlOffset + y * 4); + + // uncompressed data segment for row + byte *literal = _resource + _uncompressedDataOffset + READ_SCI11ENDIAN_UINT32(_resource + _controlOffset + _sourceHeight * 4 + y * 4); + + uint8 length; + for (int i = 0; i < _maxWidth; i += length) { + byte controlByte = *row++; + length = controlByte; + + // Run-length encoded + if (controlByte & 0x80) { + length &= 0x3F; + assert(i + length < (int)sizeof(_buffer)); + + // Fill with skip color + if (controlByte & 0x40) { + memset(_buffer + i, _transparentColor, length); + // Next value is fill colour + } else { + memset(_buffer + i, *literal, length); + ++literal; + } + // Uncompressed + } else { + assert(i + length < (int)sizeof(_buffer)); + memcpy(_buffer + i, literal, length); + literal += length; + } + } + _y = y; + } + + return _buffer; + } +}; + +#pragma mark - +#pragma mark CelObj - Remappers + +struct MAPPER_NoMD { + inline void draw(byte *target, const byte pixel, const uint8 skipColor) const { + if (pixel != skipColor) { + *target = pixel; + } + } +}; +struct MAPPER_NoMDNoSkip { + inline void draw(byte *target, const byte pixel, const uint8) const { + *target = pixel; + } +}; + void CelObj::draw(Buffer &target, const ScreenItem &screenItem, const Common::Rect &targetRect) const { const Buffer &priorityMap = g_sci->_gfxFrameout->getPriorityMap(); const Common::Point &scaledPosition = screenItem._scaledPosition; @@ -105,7 +277,7 @@ void CelObj::draw(Buffer &target, const ScreenItem &screenItem, const Common::Re if (_remap) { if (g_sci->_gfxFrameout->_hasRemappedScreenItem) { - const uint8 priority = MAX((uint8)0, MIN((uint8)255, (uint8)screenItem._priority)); + const uint8 priority = MAX((int16)0, MIN((int16)255, screenItem._priority)); // NOTE: In the original engine code, there was a second branch for // _remap here that would then call the following functions if _remap was false: @@ -193,7 +365,7 @@ void CelObj::draw(Buffer &target, const ScreenItem &screenItem, const Common::Re } } else { if (g_sci->_gfxFrameout->_hasRemappedScreenItem) { - const uint8 priority = MAX((uint8)0, MIN((uint8)255, (uint8)screenItem._priority)); + const uint8 priority = MAX((int16)0, MIN((int16)255, screenItem._priority)); if (scaleX.isOne() && scaleY.isOne()) { if (_compressionType == kCelCompressionNone) { if (_drawMirrored) { @@ -309,57 +481,16 @@ void CelObj::drawTo(Buffer &target, Common::Rect const &targetRect, Common::Poin } uint8 CelObj::readPixel(uint16 x, const uint16 y, bool mirrorX) const { - byte *resource = getResPointer(); - byte *celHeader = resource + _celHeaderOffset; - if (mirrorX) { x = _width - x - 1; } if (_compressionType == kCelCompressionNone) { - byte *pixels = resource + READ_SCI11ENDIAN_UINT32(celHeader + 24); - return pixels[y * _width + x]; + READER_Uncompressed reader(*this, x + 1); + return reader.getRow(y)[x]; } else { - byte buffer[1024]; - - uint32 dataOffset = READ_SCI11ENDIAN_UINT32(celHeader + 24); - uint32 uncompressedDataOffset = READ_SCI11ENDIAN_UINT32(celHeader + 28); - uint32 controlOffset = READ_SCI11ENDIAN_UINT32(celHeader + 32); - - // compressed data segment for row - byte *row = resource + dataOffset + READ_SCI11ENDIAN_UINT32(resource + controlOffset + y * 4); - - // uncompressed data segment for row - byte *literal = resource + uncompressedDataOffset + READ_SCI11ENDIAN_UINT32(resource + controlOffset + _height * 4 + y * 4); - - uint8 length; - byte controlByte; - for (uint i = 0; i <= x; i += length) { - controlByte = *row++; - length = controlByte; - - // Run-length encoded - if (controlByte & 0x80) { - length &= 0x3F; - assert(i + length < sizeof(buffer)); - - // Fill with skip color - if (controlByte & 0x40) { - memset(buffer + i, _transparentColor, length); - // Next value is fill colour - } else { - memset(buffer + i, *literal, length); - ++literal; - } - // Uncompressed - } else { - assert(i + length < sizeof(buffer)); - memcpy(buffer + i, literal, length); - literal += length; - } - } - - return buffer[x]; + READER_Compressed reader(*this, x + 1); + return reader.getRow(y)[x]; } } @@ -425,6 +556,57 @@ void CelObj::putCopyInCache(const int cacheIndex) const { #pragma mark - #pragma mark CelObj - Drawing + +template <typename MAPPER, typename SCALER> +struct RENDERER { + MAPPER &_mapper; + SCALER &_scaler; + const uint8 _skipColor; + + RENDERER(MAPPER &mapper, SCALER &scaler, const uint8 skipColor) : + _mapper(mapper), + _scaler(scaler), + _skipColor(skipColor) {} + + inline void draw(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { + const int16 sourceX = targetRect.left - scaledPosition.x; + const int16 sourceY = targetRect.top - scaledPosition.y; + + byte *targetPixel = (byte *)target.getPixels() + target.screenWidth * targetRect.top + targetRect.left; + + const int16 skipStride = target.screenWidth - targetRect.width(); + const int16 targetWidth = targetRect.width(); + const int16 targetHeight = targetRect.height(); + for (int y = 0; y < targetHeight; ++y) { + _scaler.setSource(sourceX, sourceY + y); + + for (int x = 0; x < targetWidth; ++x) { + _mapper.draw(targetPixel++, _scaler.read(), _skipColor); + } + + targetPixel += skipStride; + } + } +}; + +template <typename MAPPER, typename SCALER> +void CelObj::render(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { + + MAPPER mapper; + SCALER scaler(*this, targetRect.left - scaledPosition.x + targetRect.width()); + RENDERER<MAPPER, SCALER> renderer(mapper, scaler, _transparentColor); + renderer.draw(target, targetRect, scaledPosition); +} + +template <typename MAPPER, typename SCALER> +void CelObj::render(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition, const Ratio &scaleX, const Ratio &scaleY) const { + + MAPPER mapper; + SCALER scaler(*this, targetRect.left - scaledPosition.x + targetRect.width(), scaleX, scaleY); + RENDERER<MAPPER, SCALER> renderer(mapper, scaler, _transparentColor); + renderer.draw(target, targetRect, scaledPosition); +} + void dummyFill(Buffer &target, const Common::Rect &targetRect) { target.fillRect(targetRect, 250); } @@ -477,173 +659,42 @@ void CelObj::scaleDrawUncompMap(Buffer &target, const Ratio &scaleX, const Ratio debug("scaleDrawUncompMap"); dummyFill(target, targetRect); } -void CelObj::drawHzFlipNoMD(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { - debug("drawHzFlipNoMD"); - dummyFill(target, targetRect); -} -void CelObj::drawNoFlipNoMD(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { - const int sourceX = targetRect.left - scaledPosition.x; - const int sourceY = targetRect.top - scaledPosition.y; - - byte *targetPixel = (byte *)target.getPixels() + (targetRect.top * target.screenWidth) + targetRect.left; - - const int stride = target.screenWidth - targetRect.width(); - byte *resource = getResPointer(); - byte *celHeader = resource + _celHeaderOffset; - - byte buffer[1024]; - - uint32 dataOffset = READ_SCI11ENDIAN_UINT32(celHeader + 24); - uint32 uncompressedDataOffset = READ_SCI11ENDIAN_UINT32(celHeader + 28); - uint32 controlOffset = READ_SCI11ENDIAN_UINT32(celHeader + 32); - - for (int y = sourceY; y < sourceY + targetRect.height(); ++y) { - // compressed data segment for row - byte *row = resource + dataOffset + READ_SCI11ENDIAN_UINT32(resource + controlOffset + y * 4); - - // uncompressed data segment for row - byte *literal = resource + uncompressedDataOffset + READ_SCI11ENDIAN_UINT32(resource + controlOffset + _height * 4 + y * 4); - - uint8 length; - byte controlByte; - for (int i = 0; i <= targetRect.width(); i += length) { - controlByte = *row++; - length = controlByte; - - // Run-length encoded - if (controlByte & 0x80) { - length &= 0x3F; - assert(i + length < (int)sizeof(buffer)); - - // Fill with skip color - if (controlByte & 0x40) { - memset(buffer + i, _transparentColor, length); - // Next value is fill colour - } else { - memset(buffer + i, *literal, length); - ++literal; - } - // Uncompressed - } else { - assert(i + length < (int)sizeof(buffer)); - memcpy(buffer + i, literal, length); - literal += length; - } - } - - for (int x = 0; x < targetRect.width(); ++x) { - byte pixel = buffer[sourceX + x]; - - if (pixel != _transparentColor) { - *targetPixel = pixel; - } - - ++targetPixel; - } - - targetPixel += stride; - } +void CelObj::drawNoFlipNoMD(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { + render<MAPPER_NoMD, SCALER_NoScale<false, READER_Compressed> >(target, targetRect, scaledPosition); } -void CelObj::drawUncompNoFlipNoMD(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { - const int sourceX = targetRect.left - scaledPosition.x; - const int sourceY = targetRect.top - scaledPosition.y; - - const int sourceStride = _width - targetRect.width(); - const int targetStride = target.screenWidth - targetRect.width(); - const int dataOffset = READ_SCI11ENDIAN_UINT32(getResPointer() + _celHeaderOffset + 24); - - byte *sourcePixel = getResPointer() + dataOffset + (sourceY * _width) + sourceX; - byte *targetPixel = (byte *)target.getPixels() + targetRect.top * target.screenWidth + targetRect.left; - - for (int y = 0; y < targetRect.height(); ++y) { - for (int x = 0; x < targetRect.width(); ++x) { - byte pixel = *sourcePixel++; - if (pixel != _transparentColor) { - *targetPixel = pixel; - } - - ++targetPixel; - } - - sourcePixel += sourceStride; - targetPixel += targetStride; - } +void CelObj::drawHzFlipNoMD(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { + render<MAPPER_NoMD, SCALER_NoScale<true, READER_Compressed> >(target, targetRect, scaledPosition); } -void CelObj::drawUncompNoFlipNoMDNoSkip(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { - const int sourceX = targetRect.left - scaledPosition.x; - const int sourceY = targetRect.top - scaledPosition.y; - const int dataOffset = READ_SCI11ENDIAN_UINT32(getResPointer() + _celHeaderOffset + 24); - - byte *sourcePixel = getResPointer() + dataOffset + (sourceY * _width) + sourceX; - target.copyRectToSurface(sourcePixel, _width, targetRect.left, targetRect.top, targetRect.width(), targetRect.height()); +void CelObj::drawUncompNoFlipNoMD(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { + render<MAPPER_NoMD, SCALER_NoScale<false, READER_Uncompressed> >(target, targetRect, scaledPosition); +} +void CelObj::drawUncompNoFlipNoMDNoSkip(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { + render<MAPPER_NoMDNoSkip, SCALER_NoScale<false, READER_Uncompressed> >(target, targetRect, scaledPosition); } void CelObj::drawUncompHzFlipNoMD(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { - debug("drawUncompHzFlipNoMD"); - dummyFill(target, targetRect); + render<MAPPER_NoMD, SCALER_NoScale<true, READER_Uncompressed> >(target, targetRect, scaledPosition); } void CelObj::drawUncompHzFlipNoMDNoSkip(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { - debug("drawUncompHzFlipNoMDNoSkip"); - dummyFill(target, targetRect); + render<MAPPER_NoMDNoSkip, SCALER_NoScale<true, READER_Uncompressed> >(target, targetRect, scaledPosition); } + void CelObj::scaleDrawNoMD(Buffer &target, const Ratio &scaleX, const Ratio &scaleY, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { - debug("scaleDrawNoMD %d/%d, %d/%d", scaleX.getNumerator(), scaleX.getDenominator(), scaleY.getNumerator(), scaleY.getDenominator()); - dummyFill(target, targetRect); + if (_drawMirrored) { + render<MAPPER_NoMD, SCALER_Scale<true, READER_Compressed> >(target, targetRect, scaledPosition, scaleX, scaleY); + } else { + render<MAPPER_NoMD, SCALER_Scale<false, READER_Compressed> >(target, targetRect, scaledPosition, scaleX, scaleY); + } } void CelObj::scaleDrawUncompNoMD(Buffer &target, const Ratio &scaleX, const Ratio &scaleY, const Common::Rect &targetRect, const Common::Point &scaledPosition) const { - debug("scaleDrawUncompNoMD %d/%d, %d/%d", scaleX.getNumerator(), scaleX.getDenominator(), scaleY.getNumerator(), scaleY.getDenominator()); - if (targetRect.isEmpty()) { - return; - } - - const CelScalerTable *table = _scaler->getScalerTable(scaleX, scaleY); - - int pixelX[1024]; - int pixelY[1024]; - - bool use2xOptimisedDrawRoutine = false /* TODO: scaleX.getDenominator() * 2 == scaleX.getNumerator() */; - - int16 sourceX = (scaledPosition.x * scaleX.getInverse()).toInt(); - int16 sourceY = (scaledPosition.y * scaleY.getInverse()).toInt(); - if (_drawMirrored) { - for (int x = targetRect.left; x < targetRect.right; ++x) { - pixelX[x] = _width - 1 - (table->valuesX[x] - sourceX); - } + render<MAPPER_NoMD, SCALER_Scale<true, READER_Uncompressed> >(target, targetRect, scaledPosition, scaleX, scaleY); } else { - for (int x = targetRect.left; x < targetRect.right; ++x) { - pixelX[x] = table->valuesX[x] - sourceX; - } - } - - for (int y = targetRect.top; y < targetRect.bottom; ++y) { - pixelY[y] = table->valuesY[y] - sourceY; - } - - byte *sourcePixels = getResPointer() + READ_SCI11ENDIAN_UINT32(getResPointer() + _celHeaderOffset + 24); - - for (int y = targetRect.top; y < targetRect.bottom; ++y) { - byte *targetPixel = target.getAddress(targetRect.left, y); - byte *sourcePixel = sourcePixels + pixelY[y] * _width; - const int *sourcePixelIndex = pixelX + targetRect.left; - - if (/* TODO */ use2xOptimisedDrawRoutine) { - // WriteUncompScaleLine2(); - } else { - // start WriteUncompScaleLine - for (int x = targetRect.left; x < targetRect.right; ++x) { - byte value = sourcePixel[*sourcePixelIndex++]; - if (value != _transparentColor) { - *targetPixel = value; - } - ++targetPixel; - } - // end WriteUncompScaleLine - } + render<MAPPER_NoMD, SCALER_Scale<false, READER_Uncompressed> >(target, targetRect, scaledPosition, scaleX, scaleY); } } diff --git a/engines/sci/graphics/celobj32.h b/engines/sci/graphics/celobj32.h index 8bda86ec7e..2e1b4250df 100644 --- a/engines/sci/graphics/celobj32.h +++ b/engines/sci/graphics/celobj32.h @@ -205,9 +205,6 @@ class ScreenItem; * pixel buffer. */ class CelObj { -private: - static CelScaler *_scaler; - protected: /** * When true, this cel will be horizontally mirrored @@ -219,6 +216,8 @@ protected: bool _drawMirrored; public: + static CelScaler *_scaler; + /** * The basic identifying information for this cel. This * information effectively acts as a composite key for @@ -380,6 +379,12 @@ public: #pragma mark - #pragma mark CelObj - Drawing private: + template <typename MAPPER, typename SCALER> + void render(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const; + + template <typename MAPPER, typename SCALER> + void render(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition, const Ratio &scaleX, const Ratio &scaleY) const; + void drawHzFlip(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const; void drawNoFlip(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const; void drawUncompNoFlip(Buffer &target, const Common::Rect &targetRect, const Common::Point &scaledPosition) const; |