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Fix tile rendering misalignment at 1440x900 and 1600x900 resolutions

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Shamelessly stolen from Stracciatella code
This commit is contained in:
Asdow
2026-06-22 00:21:31 +03:00
parent eb8ecb31f0
commit 601fabf401
1 changed files with 6 additions and 8 deletions
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TileEngine/renderworld.cpp
+6 -8
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@@ -8518,8 +8518,7 @@ void CalcRenderParameters(INT16 sLeft, INT16 sTop, INT16 sRight, INT16 sBottom )
gsStartPointY_W = sRenderCenterY_W - sTempPosY_W;
// NOTE: Increase X map value by 1 tile to offset where on screen we are...
if ( gsStartPointX_W > 0 )
gsStartPointX_W += CELL_X_SIZE;
gsStartPointX_W += CELL_X_SIZE;
// d) screen start point is screen distances minus screen center
gsStartPointX_S = sLeft - VIEWPORT_XOFFSET_S;
@@ -8527,8 +8526,8 @@ void CalcRenderParameters(INT16 sLeft, INT16 sTop, INT16 sRight, INT16 sBottom )
// STEP FOUR - Determine Start block
// a) Find start block
gsStartPointX_M = ( gsStartPointX_W ) / CELL_X_SIZE;
gsStartPointY_M = ( gsStartPointY_W ) / CELL_Y_SIZE;
gsStartPointX_M = floor( DOUBLE(gsStartPointX_W) / DOUBLE(CELL_X_SIZE) );
gsStartPointY_M = floor( DOUBLE(gsStartPointY_W) / DOUBLE(CELL_Y_SIZE) );
// STEP 5 - Determine Deltas for center and find screen values
//Make sure these coordinates are multiples of scroll steps
@@ -8578,8 +8577,7 @@ void CalcRenderParameters(INT16 sLeft, INT16 sTop, INT16 sRight, INT16 sBottom )
gsLStartPointY_W = sRenderCenterY_W - sTempPosY_W;
// NOTE: Increase X map value by 1 tile to offset where on screen we are...
if ( gsLStartPointX_W > 0 )
gsLStartPointX_W += CELL_X_SIZE;
gsLStartPointX_W += CELL_X_SIZE;
// d) screen start point is screen distances minus screen center
gsLStartPointX_S = sLeft - LARGER_VIEWPORT_XOFFSET_S;
@@ -8587,8 +8585,8 @@ void CalcRenderParameters(INT16 sLeft, INT16 sTop, INT16 sRight, INT16 sBottom )
// STEP FOUR - Determine Start block
// a) Find start block
gsLStartPointX_M = ( gsLStartPointX_W ) / CELL_X_SIZE;
gsLStartPointY_M = ( gsLStartPointY_W ) / CELL_Y_SIZE;
gsLStartPointX_M = floor( DOUBLE(gsLStartPointX_W) / DOUBLE(CELL_X_SIZE) );
gsLStartPointY_M = floor( DOUBLE(gsLStartPointY_W) / DOUBLE(CELL_Y_SIZE) );
// Adjust starting screen coordinates
gsLStartPointX_S -= sOffsetX_S;