Defer flushes if kPreferNoIO is specified
Prior to this patch clients who were solely uploading to textures (e.g., SW Mask Mgr) would cause extra flushes b.c., even though kPreferNoIO was being specified, resources with pending IO would still be returned even though there was plenty of space in the resource cache.
Review URL: https://codereview.chromium.org/1286203002
diff --git a/src/gpu/GrSurface.cpp b/src/gpu/GrSurface.cpp
index 9bd9e8b..89cbf4a 100644
--- a/src/gpu/GrSurface.cpp
+++ b/src/gpu/GrSurface.cpp
@@ -13,6 +13,35 @@
#include "SkImageEncoder.h"
#include <stdio.h>
+size_t GrSurface::WorseCaseSize(const GrSurfaceDesc& desc) {
+ size_t size;
+
+ bool isRenderTarget = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag);
+ if (isRenderTarget) {
+ // We own one color value for each MSAA sample.
+ int colorValuesPerPixel = SkTMax(1, desc.fSampleCnt);
+ if (desc.fSampleCnt) {
+ // Worse case, we own the resolve buffer so that is one more sample per pixel.
+ colorValuesPerPixel += 1;
+ }
+ SkASSERT(kUnknown_GrPixelConfig != desc.fConfig);
+ SkASSERT(!GrPixelConfigIsCompressed(desc.fConfig));
+ size_t colorBytes = GrBytesPerPixel(desc.fConfig);
+ SkASSERT(colorBytes > 0);
+ size = colorValuesPerPixel * desc.fWidth * desc.fHeight * colorBytes;
+ } else {
+ if (GrPixelConfigIsCompressed(desc.fConfig)) {
+ size = GrCompressedFormatDataSize(desc.fConfig, desc.fWidth, desc.fHeight);
+ } else {
+ size = (size_t) desc.fWidth * desc.fHeight * GrBytesPerPixel(desc.fConfig);
+ }
+
+ size += size/3; // in case we have to mipmap
+ }
+
+ return size;
+}
+
template<typename T> static bool adjust_params(int surfaceWidth,
int surfaceHeight,
size_t bpp,