Disabled YUV decoding for subsets

Image subsets were always showing the same tile and were causing an image to be fully YUV decoded once per tile, which was both slow and wrong.

BUG=413001, 419718

Review URL: https://codereview.chromium.org/661483002

diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index fdd4a79e48b22a8dffc74198bf764315f1059666..e7d4ea121f23d7ca45b47130c10563d3dec7f114 100644 (file)
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -220,6 +220,12 @@ static GrTexture *load_etc1_texture(GrContext* ctx, bool cache,
 
 static GrTexture *load_yuv_texture(GrContext* ctx, bool cache, const GrTextureParams* params,
                                    const SkBitmap& bm, const GrTextureDesc& desc) {
+    // Subsets are not supported, the whole pixelRef is loaded when using YUV decoding
+    if ((bm.pixelRef()->info().width()  != bm.info().width()) ||
+        (bm.pixelRef()->info().height() != bm.info().height())) {
+        return NULL;
+    }
+
     SkPixelRef* pixelRef = bm.pixelRef();
     SkISize yuvSizes[3];
     if ((NULL == pixelRef) || !pixelRef->getYUV8Planes(yuvSizes, NULL, NULL, NULL)) {