[metal] Add label support

Bug: skia:13446
Change-Id: If1cb6a27858cfcee10439c70cdac2e66761e05a3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/557392
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>

src/gpu/ganesh/mtl/GrMtlBuffer.h

@@ -51,6 +51,8 @@ private:
     void validate() const;
 #endif
 
+    void onSetLabel() override;
+
     bool fIsDynamic;
     id<MTLBuffer> fMtlBuffer;
 

src/gpu/ganesh/mtl/GrMtlBuffer.mm

@@ -196,4 +196,12 @@ void GrMtlBuffer::validate() const {
 }
 #endif
 
+void GrMtlBuffer::onSetLabel() {
+    SkASSERT(fMtlBuffer);
+    if (!this->getLabel().empty()) {
+        NSString* labelStr = @(this->getLabel().c_str());
+        fMtlBuffer.label = [@"_Skia_" stringByAppendingString:labelStr];
+    }
+}
+
 GR_NORETAIN_END

src/gpu/ganesh/mtl/GrMtlRenderTarget.h

@@ -72,6 +72,8 @@ protected:
     // This returns zero since the memory should all be handled by the attachments
     size_t onGpuMemorySize() const override { return 0; }
 
+    void onSetLabel() override;
+
     sk_sp<GrMtlAttachment> fColorAttachment;
     sk_sp<GrMtlAttachment> fResolveAttachment;
 
@@ -87,8 +89,6 @@ private:
 
     bool completeStencilAttachment(GrAttachment* stencil, bool useMSAASurface) override;
 
-    void onSetLabel() override{}
-
     // We can have a renderpass with and without resolve attachment or stencil attachment,
     // both of these being completely orthogonal. Thus we have a total of 4 types of render passes.
     // We then cache a framebuffer for each type of these render passes.

src/gpu/ganesh/mtl/GrMtlRenderTarget.mm

@@ -166,4 +166,19 @@ bool GrMtlRenderTarget::completeStencilAttachment(GrAttachment* stencil, bool us
     return true;
 }
 
+void GrMtlRenderTarget::onSetLabel() {
+    SkASSERT(fColorAttachment);
+    if (!this->getLabel().empty()) {
+        NSString* labelStr = @(this->getLabel().c_str());
+        if (fResolveAttachment) {
+            fColorAttachment->mtlTexture().label =
+                    [@"_Skia_MSAA_" stringByAppendingString:labelStr];
+            fResolveAttachment->mtlTexture().label =
+                    [@"_Skia_Resolve_" stringByAppendingString:labelStr];
+        } else {
+            fColorAttachment->mtlTexture().label = [@"_Skia_" stringByAppendingString:labelStr];
+        }
+    }
+}
+
 GR_NORETAIN_END

src/gpu/ganesh/mtl/GrMtlTexture.h

@@ -65,6 +65,8 @@ protected:
          return false;
      }
 
+    void onSetLabel() override;
+
 private:
     enum Wrapped { kWrapped };
 
@@ -84,8 +86,6 @@ private:
                  GrIOType,
                  std::string_view label);
 
-    void onSetLabel() override{}
-
     sk_sp<GrMtlAttachment> fTexture;
 
     using INHERITED = GrTexture;

src/gpu/ganesh/mtl/GrMtlTexture.mm

@@ -139,4 +139,12 @@ GrBackendFormat GrMtlTexture::backendFormat() const {
     return GrBackendFormat::MakeMtl(fTexture->mtlFormat());
 }
 
+void GrMtlTexture::onSetLabel() {
+    SkASSERT(fTexture);
+    if (!this->getLabel().empty()) {
+        NSString* labelStr = @(this->getLabel().c_str());
+        fTexture->mtlTexture().label = [@"_Skia_" stringByAppendingString:labelStr];
+    }
+}
+
 GR_NORETAIN_END

src/gpu/ganesh/mtl/GrMtlTextureRenderTarget.h

@@ -63,7 +63,7 @@ private:
 
     size_t onGpuMemorySize() const override;
 
-    void onSetLabel() override{}
+    void onSetLabel() override;
 };
 
 #endif

src/gpu/ganesh/mtl/GrMtlTextureRenderTarget.mm

@@ -162,4 +162,9 @@ size_t GrMtlTextureRenderTarget::onGpuMemorySize() const {
                                   1 /*colorSamplesPerPixel*/, this->mipmapped());
 }
 
+void GrMtlTextureRenderTarget::onSetLabel() {
+    GrMtlRenderTarget::onSetLabel();
+    GrMtlTexture::onSetLabel();
+}
+
 GR_NORETAIN_END