diff --git a/sources/Renderer/Direct3D11/D3D11CommandBuffer.cpp b/sources/Renderer/Direct3D11/D3D11CommandBuffer.cpp
index 9c243ba53d..f5ea4f5e07 100644
--- a/sources/Renderer/Direct3D11/D3D11CommandBuffer.cpp
+++ b/sources/Renderer/Direct3D11/D3D11CommandBuffer.cpp
@@ -472,7 +472,7 @@ void D3D11CommandBuffer::CopyTexture(
     auto& dstTextureD3D = LLGL_CAST(D3D11Texture&, dstTexture);
     auto& srcTextureD3D = LLGL_CAST(D3D11Texture&, srcTexture);
 
-    const Offset3D  dstOffset   = CalcTextureOffset(dstTexture.GetType(), dstLocation.offset, dstLocation.arrayLayer);
+    const Offset3D  dstOffset   = CalcTextureOffset(dstTexture.GetType(), dstLocation.offset);
     const D3D11_BOX srcBox      = srcTextureD3D.CalcRegion(srcLocation.offset, extent);
 
     context_->CopySubresourceRegion(
diff --git a/sources/Renderer/Direct3D11/Texture/D3D11Texture.cpp b/sources/Renderer/Direct3D11/Texture/D3D11Texture.cpp
index a3f8872e36..cfb72b0d08 100644
--- a/sources/Renderer/Direct3D11/Texture/D3D11Texture.cpp
+++ b/sources/Renderer/Direct3D11/Texture/D3D11Texture.cpp
@@ -343,7 +343,7 @@ static void CreateD3D11TextureSubresourceCopyWithCPUAccess(
                 desc.Usage          = outTextureUsage;
                 desc.BindFlags      = 0;
                 desc.CPUAccessFlags = cpuAccessFlags;
-                desc.MiscFlags      = (desc.MiscFlags & D3D11_RESOURCE_MISC_TEXTURECUBE);
+                desc.MiscFlags      = 0; // Don't adopt D3D11_RESOURCE_MISC_TEXTURECUBE here for CPU access textures
             }
             outTexture.tex2D = DXCreateTexture2D(device, desc);
         }
diff --git a/sources/Renderer/OpenGL/Texture/GLTexture.cpp b/sources/Renderer/OpenGL/Texture/GLTexture.cpp
index 78a6ba669c..210d3f3744 100644
--- a/sources/Renderer/OpenGL/Texture/GLTexture.cpp
+++ b/sources/Renderer/OpenGL/Texture/GLTexture.cpp
@@ -399,6 +399,15 @@ void GLTexture::TexParameterSwizzle(
 
 #ifdef GL_ARB_copy_image
 
+// For glCopyImageSubData, the array lazer is always specified in the Z-coordinate
+static Offset3D ToGLArrayTextureOffset(TextureType type, const Offset3D& offset)
+{
+    if (type == TextureType::Texture1DArray)
+        return Offset3D{ offset.x, 0, offset.y };
+    else
+        return offset;
+}
+
 static void GLCopyImageSubData(
     GLTexture&      dstTexture,
     GLint           dstLevel,
@@ -409,19 +418,21 @@ static void GLCopyImageSubData(
     const Extent3D& extent)
 {
     /* Copy raw data of texture directly (GL 4.3+) */
+    const Offset3D dstOffsetGL = ToGLArrayTextureOffset(dstTexture.GetType(), dstOffset);
+    const Offset3D srcOffsetGL = ToGLArrayTextureOffset(srcTexture.GetType(), srcOffset);
     glCopyImageSubData(
         srcTexture.GetID(),
         GLTypes::Map(srcTexture.GetType()),
         srcLevel,
-        srcOffset.x,
-        srcOffset.y,
-        srcOffset.z,
+        srcOffsetGL.x,
+        srcOffsetGL.y,
+        srcOffsetGL.z,
         dstTexture.GetID(),
         GLTypes::Map(dstTexture.GetType()),
         dstLevel,
-        dstOffset.x,
-        dstOffset.y,
-        dstOffset.z,
+        dstOffsetGL.x,
+        dstOffsetGL.y,
+        dstOffsetGL.z,
         static_cast<GLsizei>(extent.width),
         static_cast<GLsizei>(extent.height),
         static_cast<GLsizei>(extent.depth)