Clarify propagate.comp

Author: floppyhammer

pathfinder/shaders/d3d11/propagate.comp

@@ -133,12 +133,9 @@ void main() {
         // Handle clip if necessary.
         if (clipPathIndex >= 0) {
             uvec2 tileCoord = drawTileCoord + drawTileRect.xy;
-            if (all(bvec4(greaterThanEqual(tileCoord, clipTileRect.xy),
-            lessThan        (tileCoord, clipTileRect.zw)))) {
+            if (all(bvec4(greaterThanEqual(tileCoord, clipTileRect.xy), lessThan(tileCoord, clipTileRect.zw)))) {
                 uvec2 clipTileCoord = tileCoord - clipTileRect.xy;
-                uint clipTileIndex = calculateTileIndex(clipTileBufferOffset,
-                clipTileRect,
-                clipTileCoord);
+                uint clipTileIndex = calculateTileIndex(clipTileBufferOffset, clipTileRect, clipTileCoord);
 
                 int thisClipAlphaTileIndex = int(iClipTiles[clipTileIndex * 4u + TILE_FIELD_BACKDROP_ALPHA_TILE_ID] << 8) >> 8;
 
@@ -179,8 +176,7 @@ void main() {
         }
 
         if (needNewAlphaTile) {
-            uint drawBatchAlphaTileIndex =
-                uint(atomicAdd(iZBuffer[FILL_INDIRECT_DRAW_PARAMS_ALPHA_TILE_COUNT_INDEX], 1));
+            uint drawBatchAlphaTileIndex = uint(atomicAdd(iZBuffer[FILL_INDIRECT_DRAW_PARAMS_ALPHA_TILE_COUNT_INDEX], 1));
             iAlphaTiles[drawBatchAlphaTileIndex * 2u + 0u] = drawTileIndex;
             iAlphaTiles[drawBatchAlphaTileIndex * 2u + 1u] = uint(clipAlphaTileIndex);
             drawAlphaTileIndex = int(drawBatchAlphaTileIndex) + uFirstAlphaTileIndex;
@@ -202,10 +198,12 @@ void main() {
         }
 
         // Write to Z-buffer if necessary.
-        ivec2 tileCoord = ivec2(tileX, tileY) + ivec2(drawTileRect.xy);
-        int tileMapIndex = tileCoord.y * uFramebufferTileSize.x + tileCoord.x;
-        if (zWrite && drawTileBackdrop != 0 && drawAlphaTileIndex < 0)
-        atomicMax(iZBuffer[tileMapIndex + FILL_INDIRECT_DRAW_PARAMS_SIZE], int(drawTileIndex));
+        ivec2 finalTileCoord = ivec2(tileX, tileY) + ivec2(drawTileRect.xy);
+        int tileMapIndex = finalTileCoord.y * uFramebufferTileSize.x + finalTileCoord.x;
+
+        if (zWrite && drawTileBackdrop != 0 && drawAlphaTileIndex < 0) {
+            atomicMax(iZBuffer[tileMapIndex + FILL_INDIRECT_DRAW_PARAMS_SIZE], int(drawTileIndex));
+        }
 
         // Stitch into the linked list if necessary.
         if (drawTileBackdrop != 0 || drawAlphaTileIndex >= 0) {