diff options
Diffstat (limited to 'engines/zvision/render_table.cpp')
| -rw-r--r-- | engines/zvision/render_table.cpp | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/engines/zvision/render_table.cpp b/engines/zvision/render_table.cpp index 3e7a86e348..5eb208eb8c 100644 --- a/engines/zvision/render_table.cpp +++ b/engines/zvision/render_table.cpp @@ -100,14 +100,15 @@ uint16 mixTwoRGB(uint16 colorOne, uint16 colorTwo, float percentColorOne) { return returnColor; } -void RenderTable::mutateImage(uint16 *sourceBuffer, uint16* destBuffer, uint32 destWidth) { - uint32 destColumnOffset = 0; +void RenderTable::mutateImage(uint16 *sourceBuffer, uint16* destBuffer, uint32 destWidth, const Common::Rect &subRect) { + uint32 destOffset = 0; - for (uint32 y = 0; y < _numRows; y++) { - uint32 sourceColumnOffset = y * _numColumns; + for (uint32 y = subRect.top; y < subRect.bottom; y++) { + uint32 sourceOffset = y * _numColumns; - for (uint32 x = 0; x < _numColumns; x++) { - uint32 index = sourceColumnOffset + x; + for (uint32 x = subRect.left; x < subRect.right; x++) { + uint32 normalizedX = x - subRect.left; + uint32 index = sourceOffset + x; // RenderTable only stores offsets from the original coordinates uint32 sourceYIndex = y + _internalBuffer[index].y; @@ -119,10 +120,10 @@ void RenderTable::mutateImage(uint16 *sourceBuffer, uint16* destBuffer, uint32 d // Clamp the xIndex to the size of the image sourceXIndex = CLIP<uint32>(sourceXIndex, 0, _numColumns - 1); - destBuffer[destColumnOffset + x] = sourceBuffer[sourceYIndex * _numColumns + sourceXIndex]; + destBuffer[destOffset + normalizedX] = sourceBuffer[sourceYIndex * _numColumns + sourceXIndex]; } - destColumnOffset += destWidth; + destOffset += destWidth; } } |