Fix barrier access mask

vazgriz · vazgriz · commit f32a534e62ef · 2018-03-25T11:51:41.000-06:00
diff --git a/09_Generating_Mipmaps.md b/09_Generating_Mipmaps.md
@@ -167,7 +167,7 @@ Now, we record the blit command. Note that `textureImage` is used for both the `
 ```c++
     barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
     barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-    barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+    barrier.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
     barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
 
     vkCmdPipelineBarrier(commandBuffer,
diff --git a/code/28_mipmapping.cpp b/code/28_mipmapping.cpp
@@ -878,7 +878,7 @@ class HelloTriangleApplication {
 
             barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
             barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-            barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+            barrier.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
             barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
 
             vkCmdPipelineBarrier(commandBuffer,
