vk: fix generateMipmaps level

poweifeng · poweifeng · commit 848751b36aa5 · 2025-03-05T14:22:10.000-08:00
The level counting was off by one.

FIXES=400710879
diff --git a/filament/backend/src/vulkan/VulkanDriver.cpp b/filament/backend/src/vulkan/VulkanDriver.cpp
@@ -1262,10 +1262,9 @@ void VulkanDriver::generateMipmaps(Handle<HwTexture> th) {
             mBlitter.blit(VK_FILTER_LINEAR, dst, dstOffsets, src, srcOffsets);
         }
 
-        level++;
         srcw = dstw;
         srch = dsth;
-    } while ((srcw > 1 || srch > 1) && level < t->levels);
+    } while ((srcw > 1 || srch > 1) && ++level < t->levels - 1);
 }
 
 void VulkanDriver::compilePrograms(CompilerPriorityQueue priority,

Original file line number	Diff line number	Diff line change
`@@ -1262,10 +1262,9 @@ void VulkanDriver::generateMipmaps(Handle<HwTexture> th) {`
`1262`	`1262`	`mBlitter.blit(VK_FILTER_LINEAR, dst, dstOffsets, src, srcOffsets);`
`1263`	`1263`	`}`
`1264`	`1264`
`1265`		`- level++;`
`1266`	`1265`	`srcw = dstw;`
`1267`	`1266`	`srch = dsth;`
`1268`		`- } while ((srcw > 1 \|\| srch > 1) && level < t->levels);`
	`1267`	`+ } while ((srcw > 1 \|\| srch > 1) && ++level < t->levels - 1);`
`1269`	`1268`	`}`
`1270`	`1269`
`1271`	`1270`	`void VulkanDriver::compilePrograms(CompilerPriorityQueue priority,`