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Unified Diff: src/gpu/GrContext.cpp

Issue 1919993002: Added --deepColor option to SampleApp, triggers creation of a ten-bit/channel buffer on Windows. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Rebase Created 4 years, 7 months ago
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Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 31845f9d6df80b7c9c2ea819e4278f0d46ac37b1..3ea67c9f018d27094b8791c646a57fda5722502d 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -20,6 +20,7 @@
#include "batches/GrCopySurfaceBatch.h"
#include "effects/GrConfigConversionEffect.h"
+#include "effects/GrGammaEffect.h"
#include "text/GrTextBlobCache.h"
#define ASSERT_OWNED_RESOURCE(R) SkASSERT(!(R) || (R)->getContext() == this)
@@ -529,6 +530,44 @@ bool GrContext::readSurfacePixels(GrSurface* src,
return true;
}
+bool GrContext::applyGamma(GrRenderTarget* dst, GrTexture* src, SkScalar gamma){
+ ASSERT_SINGLE_OWNER
+ RETURN_FALSE_IF_ABANDONED
+ ASSERT_OWNED_RESOURCE(dst);
+ ASSERT_OWNED_RESOURCE(src);
+ GR_AUDIT_TRAIL_AUTO_FRAME(&fAuditTrail, "GrContext::applyGamma");
+
+ // Dimensions must match exactly.
+ if (dst->width() != src->width() || dst->height() != src->height()) {
+ return false;
+ }
+
+ SkSurfaceProps props(SkSurfaceProps::kGammaCorrect_Flag,
+ SkSurfaceProps::kLegacyFontHost_InitType);
+ sk_sp<GrDrawContext> drawContext(this->drawContext(sk_ref_sp(dst), &props));
+ if (!drawContext) {
+ return false;
+ }
+
+ GrPaint paint;
+ if (SkScalarNearlyEqual(gamma, 1.0f)) {
+ paint.addColorTextureProcessor(src, GrCoordTransform::MakeDivByTextureWHMatrix(src));
+ } else {
+ SkAutoTUnref<const GrFragmentProcessor> fp;
+ fp.reset(GrGammaEffect::Create(src, gamma));
+ paint.addColorFragmentProcessor(fp);
+ }
+ paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
+ paint.setGammaCorrect(true);
+
+ SkRect rect;
+ src->getBoundsRect(&rect);
+ drawContext->drawRect(GrClip::WideOpen(), paint, SkMatrix::I(), rect);
+
+ this->flushSurfaceWrites(dst);
+ return true;
+}
+
void GrContext::prepareSurfaceForExternalIO(GrSurface* surface) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
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