Vulkan: Correct RenderTargetVk extents to image mip

src/libANGLE/renderer/vulkan/FramebufferVk.cpp

@@ -45,7 +45,7 @@ bool ClipToRenderTarget(const gl::Rectangle &area,
                         RenderTargetVk *renderTarget,
                         gl::Rectangle *rectOut)
 {
-    const gl::Extents &renderTargetExtents = renderTarget->getImageExtents();
+    const gl::Extents renderTargetExtents = renderTarget->getExtents();
     gl::Rectangle renderTargetRect(0, 0, renderTargetExtents.width, renderTargetExtents.height);
     return ClipRectangle(area, renderTargetRect, rectOut);
 }
@@ -679,7 +679,7 @@ angle::Result FramebufferVk::blitWithCommand(ContextVk *contextVk,
     vk::ImageHelper *srcImage = readRenderTarget->getImageForRead(
         &mFramebuffer, vk::ImageLayout::TransferSrc, commandBuffer);
 
-    const gl::Extents sourceFrameBufferExtents = readRenderTarget->getImageExtents();
+    const gl::Extents sourceFrameBufferExtents = readRenderTarget->getExtents();
     gl::Rectangle readRect                     = readRectIn;
 
     if (flipSource)
@@ -699,7 +699,7 @@ angle::Result FramebufferVk::blitWithCommand(ContextVk *contextVk,
     blit.dstSubresource.baseArrayLayer = 0;
     blit.dstSubresource.layerCount     = 1;
 
-    const gl::Extents &drawFrameBufferExtents = drawRenderTarget->getImageExtents();
+    const gl::Extents drawFrameBufferExtents = drawRenderTarget->getExtents();
     gl::Rectangle drawRect                   = drawRectIn;
 
     if (flipDest)
@@ -858,8 +858,8 @@ angle::Result FramebufferVk::getFramebuffer(ContextVk *contextVk, vk::Framebuffe
         ASSERT(colorRenderTarget);
         attachments.push_back(colorRenderTarget->getDrawImageView()->getHandle());
 
-        ASSERT(attachmentsSize.empty() || attachmentsSize == colorRenderTarget->getImageExtents());
-        attachmentsSize = colorRenderTarget->getImageExtents();
+        ASSERT(attachmentsSize.empty() || attachmentsSize == colorRenderTarget->getExtents());
+        attachmentsSize = colorRenderTarget->getExtents();
     }
 
     RenderTargetVk *depthStencilRenderTarget = mRenderTargetCache.getDepthStencil();
@@ -868,8 +868,8 @@ angle::Result FramebufferVk::getFramebuffer(ContextVk *contextVk, vk::Framebuffe
         attachments.push_back(depthStencilRenderTarget->getDrawImageView()->getHandle());
 
         ASSERT(attachmentsSize.empty() ||
-               attachmentsSize == depthStencilRenderTarget->getImageExtents());
-        attachmentsSize = depthStencilRenderTarget->getImageExtents();
+               attachmentsSize == depthStencilRenderTarget->getExtents());
+        attachmentsSize = depthStencilRenderTarget->getExtents();
     }
 
     ASSERT(!attachments.empty());
@@ -1167,9 +1167,9 @@ angle::Result FramebufferVk::readPixelsImpl(ContextVk *contextVk,
     return angle::Result::Continue;
 }
 
-const gl::Extents &FramebufferVk::getReadImageExtents() const
+gl::Extents FramebufferVk::getReadImageExtents() const
 {
-    return getColorReadRenderTarget()->getImageExtents();
+    return getColorReadRenderTarget()->getExtents();
 }
 
 RenderTargetVk *FramebufferVk::getFirstRenderTarget() const

src/libANGLE/renderer/vulkan/FramebufferVk.h

@@ -100,7 +100,7 @@ class FramebufferVk : public FramebufferImpl
                                  RenderTargetVk *renderTarget,
                                  void *pixels);
 
-    const gl::Extents &getReadImageExtents() const;
+    gl::Extents getReadImageExtents() const;
 
     const gl::DrawBufferMask &getEmulatedAlphaAttachmentMask() const;
     RenderTargetVk *getColorReadRenderTarget() const;

src/libANGLE/renderer/vulkan/RenderTargetVk.cpp

@@ -119,10 +119,10 @@ const vk::Format &RenderTargetVk::getImageFormat() const
     return mImage->getFormat();
 }
 
-const gl::Extents &RenderTargetVk::getImageExtents() const
+gl::Extents RenderTargetVk::getExtents() const
 {
     ASSERT(mImage && mImage->valid());
-    return mImage->getExtents();
+    return mImage->getLevelExtents2D(mLevelIndex);
 }
 
 void RenderTargetVk::updateSwapchainImage(vk::ImageHelper *image, vk::ImageView *imageView)

src/libANGLE/renderer/vulkan/RenderTargetVk.h

@@ -71,7 +71,7 @@ class RenderTargetVk final : public FramebufferAttachmentRenderTarget
     vk::ImageView *getReadImageView() const;
 
     const vk::Format &getImageFormat() const;
-    const gl::Extents &getImageExtents() const;
+    gl::Extents getExtents() const;
     size_t getLevelIndex() const { return mLevelIndex; }
     size_t getLayerIndex() const { return mLayerIndex; }
 

src/libANGLE/renderer/vulkan/SurfaceVk.cpp

@@ -970,12 +970,12 @@ void WindowSurfaceVk::setSwapInterval(EGLint interval)
 
 EGLint WindowSurfaceVk::getWidth() const
 {
-    return static_cast<EGLint>(mColorRenderTarget.getImageExtents().width);
+    return static_cast<EGLint>(mColorRenderTarget.getExtents().width);
 }
 
 EGLint WindowSurfaceVk::getHeight() const
 {
-    return static_cast<EGLint>(mColorRenderTarget.getImageExtents().height);
+    return static_cast<EGLint>(mColorRenderTarget.getExtents().height);
 }
 
 EGLint WindowSurfaceVk::isPostSubBufferSupported() const
@@ -1023,7 +1023,7 @@ angle::Result WindowSurfaceVk::getCurrentFramebuffer(vk::Context *context,
 
     VkFramebufferCreateInfo framebufferInfo = {};
 
-    const gl::Extents &extents            = mColorRenderTarget.getImageExtents();
+    const gl::Extents extents             = mColorRenderTarget.getExtents();
     std::array<VkImageView, 2> imageViews = {{VK_NULL_HANDLE, mDepthStencilImageView.getHandle()}};
 
     framebufferInfo.sType           = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;

src/libANGLE/renderer/vulkan/vk_helpers.cpp

@@ -1546,6 +1546,14 @@ VkImageLayout ImageHelper::getCurrentLayout() const
     return kImageMemoryBarrierData[mCurrentLayout].layout;
 }
 
+gl::Extents ImageHelper::getLevelExtents2D(uint32_t level) const
+{
+    int width  = std::max(mExtents.width >> level, 1);
+    int height = std::max(mExtents.height >> level, 1);
+
+    return gl::Extents(width, height, 1);
+}
+
 bool ImageHelper::isLayoutChangeNecessary(ImageLayout newLayout) const
 {
     const ImageMemoryBarrierData &layoutData = kImageMemoryBarrierData[mCurrentLayout];

src/libANGLE/renderer/vulkan/vk_helpers.h

@@ -610,6 +610,10 @@ class ImageHelper final : public CommandGraphResource
 
     VkImageLayout getCurrentLayout() const;
 
+    // Helper function to calculate the extents of a render target created for a certain mip of the
+    // image.
+    gl::Extents getLevelExtents2D(uint32_t level) const;
+
     void clearColor(const VkClearColorValue &color,
                     uint32_t baseMipLevel,
                     uint32_t levelCount,