Add maxSurfaceSampleCountForColorType to GrContextThreadSafeProxy

Change-Id: I7d98b2dff9fbb29bb9709c72679551473078fe0f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/513877
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

RELEASE_NOTES.txt

@@ -2,6 +2,11 @@ Skia Graphics Release Notes
 
 This file includes a list of high level updates for each milestone release.
 
+Milestone 101
+-------------
+  * Add maxSurfaceSampleCountForColorType(SkColorType ct) in GrContextThreadSafeProxy
+
+
 Milestone 100
 -------------
   * Skia now requires C++17 and the corresponding standard library (or newer).

include/gpu/GrContextThreadSafeProxy.h

@@ -114,6 +114,13 @@ public:
      */
     GrBackendFormat compressedBackendFormat(SkImage::CompressionType c) const;
 
+    /**
+     * Gets the maximum supported sample count for a color type. 1 is returned if only non-MSAA
+     * rendering is supported for the color type. 0 is returned if rendering to this color type
+     * is not supported at all.
+     */
+    int maxSurfaceSampleCountForColorType(SkColorType colorType) const;
+
     bool isValid() const { return nullptr != fCaps; }
 
     bool operator==(const GrContextThreadSafeProxy& that) const {

include/gpu/GrRecordingContext.h

@@ -90,7 +90,9 @@ public:
      * rendering is supported for the color type. 0 is returned if rendering to this color type
      * is not supported at all.
      */
-    SK_API int maxSurfaceSampleCountForColorType(SkColorType) const;
+    SK_API int maxSurfaceSampleCountForColorType(SkColorType colorType) const {
+        return INHERITED::maxSurfaceSampleCountForColorType(colorType);
+    }
 
     // Provides access to functions that aren't part of the public API.
     GrRecordingContextPriv priv();

include/private/GrContext_Base.h

@@ -45,6 +45,13 @@ public:
 
     SK_API GrBackendFormat compressedBackendFormat(SkImage::CompressionType) const;
 
+    /**
+     * Gets the maximum supported sample count for a color type. 1 is returned if only non-MSAA
+     * rendering is supported for the color type. 0 is returned if rendering to this color type
+     * is not supported at all.
+     */
+    SK_API int maxSurfaceSampleCountForColorType(SkColorType colorType) const;
+
     // TODO: When the public version is gone, rename to refThreadSafeProxy and add raw ptr ver.
     sk_sp<GrContextThreadSafeProxy> threadSafeProxy();
 

src/gpu/GrContextThreadSafeProxy.cpp

@@ -162,6 +162,14 @@ GrBackendFormat GrContextThreadSafeProxy::compressedBackendFormat(SkImage::Compr
     return format;
 }
 
+int GrContextThreadSafeProxy::maxSurfaceSampleCountForColorType(SkColorType colorType) const {
+    SkASSERT(fCaps);
+
+    GrBackendFormat format = fCaps->getDefaultBackendFormat(SkColorTypeToGrColorType(colorType),
+                                                            GrRenderable::kYes);
+    return fCaps->maxRenderTargetSampleCount(format);
+}
+
 void GrContextThreadSafeProxy::abandonContext() {
     if (!fAbandoned.exchange(true)) {
         fTextBlobRedrawCoordinator->freeAll();
@@ -183,4 +191,3 @@ void GrContextThreadSafeProxyPriv::init(sk_sp<const GrCaps> caps,
                                         sk_sp<GrThreadSafePipelineBuilder> builder) const {
     fProxy->init(std::move(caps), std::move(builder));
 }
-

src/gpu/GrContext_Base.cpp

@@ -44,6 +44,10 @@ GrBackendFormat GrContext_Base::compressedBackendFormat(SkImage::CompressionType
     return fThreadSafeProxy->compressedBackendFormat(c);
 }
 
+int GrContext_Base::maxSurfaceSampleCountForColorType(SkColorType colorType) const {
+    return fThreadSafeProxy->maxSurfaceSampleCountForColorType(colorType);
+}
+
 sk_sp<GrContextThreadSafeProxy> GrContext_Base::threadSafeProxy() { return fThreadSafeProxy; }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////

src/gpu/GrRecordingContext.cpp

@@ -53,13 +53,6 @@ GrRecordingContext::~GrRecordingContext() {
 #endif
 }
 
-int GrRecordingContext::maxSurfaceSampleCountForColorType(SkColorType colorType) const {
-    GrBackendFormat format =
-            this->caps()->getDefaultBackendFormat(SkColorTypeToGrColorType(colorType),
-                                                  GrRenderable::kYes);
-    return this->caps()->maxRenderTargetSampleCount(format);
-}
-
 bool GrRecordingContext::init() {
     if (!INHERITED::init()) {
         return false;
@@ -249,4 +242,3 @@ void GrRecordingContext::DMSAAStats::merge(const DMSAAStats& stats) {
 
 #endif // GR_GPU_STATS
 #endif // GR_TEST_UTILS
-