Merge pull request #94 from kondrak/master

Overv · web-flow · commit ec0cef10e01d · 2018-06-29T19:14:39.000+02:00
Fix "zero-volume area" Vulkan warning when generating mipmaps for odd texture dimensions.
diff --git a/09_Generating_Mipmaps.md b/09_Generating_Mipmaps.md
@@ -158,7 +158,7 @@ blit.srcSubresource.mipLevel = i - 1;
 blit.srcSubresource.baseArrayLayer = 0;
 blit.srcSubresource.layerCount = 1;
 blit.dstOffsets[0] = { 0, 0, 0 };
-blit.dstOffsets[1] = { mipWidth / 2, mipHeight / 2, 1 };
+blit.dstOffsets[1] = { mipWidth > 1 ? mipWidth / 2 : 1, mipHeight > 1 ? mipHeight / 2 : 1, 1 };
 blit.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
 blit.dstSubresource.mipLevel = i;
 blit.dstSubresource.baseArrayLayer = 0;
diff --git a/code/28_mipmapping.cpp b/code/28_mipmapping.cpp
@@ -860,7 +860,7 @@ class HelloTriangleApplication {
             blit.srcSubresource.baseArrayLayer = 0;
             blit.srcSubresource.layerCount = 1;
             blit.dstOffsets[0] = {0, 0, 0};
-            blit.dstOffsets[1] = {mipWidth / 2, mipHeight / 2, 1};
+            blit.dstOffsets[1] = { mipWidth > 1 ? mipWidth / 2 : 1, mipHeight > 1 ? mipHeight / 2 : 1, 1 };
             blit.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
             blit.dstSubresource.mipLevel = i;
             blit.dstSubresource.baseArrayLayer = 0;
