blob: c9c4d7ef8ac9205105fde1824ca32a5961cd14d3 [file] [log] [blame]
* Copyright 2016 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "SkTypes.h"
#include "GrContext.h"
#include "GrTexture.h"
#include "GrTexturePriv.h"
#include "SkCanvas.h"
#include "SkImage_Base.h"
#include "SkSurface.h"
#include "Test.h"
// Tests that MIP maps are created and invalidated as expected when drawing to and from GrTextures.
DEF_GPUTEST_FOR_NULLGL_CONTEXT(GrTextureMipMapInvalidationTest, reporter, ctxInfo) {
auto isMipped = [] (SkSurface* surf) {
return surf->makeImageSnapshot()->getTexture()->texturePriv().hasMipMaps();
auto mipsAreDirty = [] (SkSurface* surf) {
return surf->makeImageSnapshot()->getTexture()->texturePriv().mipMapsAreDirty();
GrContext* context = ctxInfo.grContext();
auto info = SkImageInfo::MakeN32Premul(256, 256);
auto surf1 = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, info);
auto surf2 = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, info);
// Draw something just in case we ever had a solid color optimization
surf1->getCanvas()->drawCircle(128, 128, 50, SkPaint());
// No mipmaps initially
REPORTER_ASSERT(reporter, !isMipped(surf1.get()));
// Painting with downscale and medium filter quality should result in mipmap creation
SkPaint paint;
surf2->getCanvas()->scale(0.2f, 0.2f);
surf2->getCanvas()->drawImage(surf1->makeImageSnapshot(), 0, 0, &paint);
REPORTER_ASSERT(reporter, isMipped(surf1.get()));
REPORTER_ASSERT(reporter, !mipsAreDirty(surf1.get()));
// Changing the contents of the surface should invalidate the mipmap, but not de-allocate
surf1->getCanvas()->drawCircle(128, 128, 100, SkPaint());
REPORTER_ASSERT(reporter, isMipped(surf1.get()));
REPORTER_ASSERT(reporter, mipsAreDirty(surf1.get()));