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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
// This is a GR test
#if SK_SUPPORT_GPU
#include "SkGpuDevice.h"
#include "../../src/gpu/GrClipMaskManager.h"
static const int X_SIZE = 12;
static const int Y_SIZE = 12;
////////////////////////////////////////////////////////////////////////////////
// note: this is unused
static GrTexture* createTexture(GrContext* context) {
unsigned char textureData[X_SIZE][Y_SIZE][4];
memset(textureData, 0, 4* X_SIZE * Y_SIZE);
GrTextureDesc desc;
// let Skia know we will be using this texture as a render target
desc.fFlags = kRenderTarget_GrTextureFlagBit;
desc.fConfig = kSkia8888_PM_GrPixelConfig;
desc.fWidth = X_SIZE;
desc.fHeight = Y_SIZE;
// We are initializing the texture with zeros here
GrTexture* texture = context->createUncachedTexture(desc, textureData, 0);
if (!texture) {
return NULL;
}
return texture;
}
// Ensure that the 'getConservativeBounds' calls are returning bounds clamped
// to the render target
static void test_clip_bounds(skiatest::Reporter* reporter, GrContext* context) {
static const int kXSize = 100;
static const int kYSize = 100;
GrTextureDesc desc;
desc.fFlags = kRenderTarget_GrTextureFlagBit;
desc.fConfig = kAlpha_8_GrPixelConfig;
desc.fWidth = kXSize;
desc.fHeight = kYSize;
GrTexture* texture = context->createUncachedTexture(desc, NULL, 0);
if (!texture) {
return;
}
GrAutoUnref au(texture);
SkIRect intScreen = SkIRect::MakeWH(kXSize, kYSize);
SkRect screen = SkRect::MakeWH(SkIntToScalar(kXSize),
SkIntToScalar(kYSize));
SkRect clipRect(screen);
clipRect.outset(10, 10);
// create a clip stack that will (trivially) reduce to a single rect that
// is larger than the screen
SkClipStack stack;
stack.clipDevRect(clipRect, SkRegion::kReplace_Op, false);
bool isIntersectionOfRects = true;
SkRect devStackBounds;
stack.getConservativeBounds(0, 0, kXSize, kYSize,
&devStackBounds,
&isIntersectionOfRects);
// make sure that the SkClipStack is behaving itself
REPORTER_ASSERT(reporter, screen == devStackBounds);
REPORTER_ASSERT(reporter, isIntersectionOfRects);
// wrap the SkClipStack in a GrClipData
GrClipData clipData;
clipData.fClipStack = &stack;
SkIRect devGrClipDataBound;
clipData.getConservativeBounds(texture,
&devGrClipDataBound,
&isIntersectionOfRects);
// make sure that GrClipData is behaving itself
REPORTER_ASSERT(reporter, intScreen == devGrClipDataBound);
REPORTER_ASSERT(reporter, isIntersectionOfRects);
}
////////////////////////////////////////////////////////////////////////////////
// verify that the top state of the stack matches the passed in state
static void check_state(skiatest::Reporter* reporter,
const GrClipMaskCache& cache,
const SkClipStack& clip,
GrTexture* mask,
const GrIRect& bound) {
SkClipStack cacheClip;
REPORTER_ASSERT(reporter, clip.getTopmostGenID() == cache.getLastClipGenID());
REPORTER_ASSERT(reporter, mask == cache.getLastMask());
GrIRect cacheBound;
cache.getLastBound(&cacheBound);
REPORTER_ASSERT(reporter, bound == cacheBound);
}
////////////////////////////////////////////////////////////////////////////////
// basic test of the cache's base functionality:
// push, pop, set, canReuse & getters
static void test_cache(skiatest::Reporter* reporter, GrContext* context) {
if (false) { // avoid bit rot, suppress warning
createTexture(context);
}
GrClipMaskCache cache;
cache.setContext(context);
SkClipStack emptyClip;
emptyClip.reset();
GrIRect emptyBound;
emptyBound.setEmpty();
// check initial state
check_state(reporter, cache, emptyClip, NULL, emptyBound);
// set the current state
GrIRect bound1;
bound1.set(0, 0, 100, 100);
SkClipStack clip1(bound1);
GrTextureDesc desc;
desc.fFlags = kRenderTarget_GrTextureFlagBit;
desc.fWidth = X_SIZE;
desc.fHeight = Y_SIZE;
desc.fConfig = kSkia8888_PM_GrPixelConfig;
cache.acquireMask(clip1.getTopmostGenID(), desc, bound1);
GrTexture* texture1 = cache.getLastMask();
REPORTER_ASSERT(reporter, texture1);
if (NULL == texture1) {
return;
}
// check that the set took
check_state(reporter, cache, clip1, texture1, bound1);
REPORTER_ASSERT(reporter, 1 == texture1->getRefCnt());
// push the state
cache.push();
// verify that the pushed state is initially empty
check_state(reporter, cache, emptyClip, NULL, emptyBound);
REPORTER_ASSERT(reporter, 1 == texture1->getRefCnt());
// modify the new state
GrIRect bound2;
bound2.set(-10, -10, 10, 10);
SkClipStack clip2(bound2);
cache.acquireMask(clip2.getTopmostGenID(), desc, bound2);
GrTexture* texture2 = cache.getLastMask();
REPORTER_ASSERT(reporter, texture2);
if (NULL == texture2) {
return;
}
// check that the changes took
check_state(reporter, cache, clip2, texture2, bound2);
REPORTER_ASSERT(reporter, 1 == texture1->getRefCnt());
REPORTER_ASSERT(reporter, 1 == texture2->getRefCnt());
// check to make sure canReuse works
REPORTER_ASSERT(reporter, cache.canReuse(clip2.getTopmostGenID(), bound2));
REPORTER_ASSERT(reporter, !cache.canReuse(clip1.getTopmostGenID(), bound1));
// pop the state
cache.pop();
// verify that the old state is restored
check_state(reporter, cache, clip1, texture1, bound1);
REPORTER_ASSERT(reporter, 1 == texture1->getRefCnt());
REPORTER_ASSERT(reporter, 1 == texture2->getRefCnt());
// manually clear the state
cache.reset();
// verify it is now empty
check_state(reporter, cache, emptyClip, NULL, emptyBound);
REPORTER_ASSERT(reporter, 1 == texture1->getRefCnt());
REPORTER_ASSERT(reporter, 1 == texture2->getRefCnt());
// pop again - so there is no state
cache.pop();
#if !defined(SK_DEBUG)
// verify that the getters don't crash
// only do in release since it generates asserts in debug
check_state(reporter, cache, emptyClip, NULL, emptyBound);
#endif
REPORTER_ASSERT(reporter, 1 == texture1->getRefCnt());
REPORTER_ASSERT(reporter, 1 == texture2->getRefCnt());
}
////////////////////////////////////////////////////////////////////////////////
static void TestClipCache(skiatest::Reporter* reporter, GrContext* context) {
test_cache(reporter, context);
test_clip_bounds(reporter, context);
}
////////////////////////////////////////////////////////////////////////////////
#include "TestClassDef.h"
DEFINE_GPUTESTCLASS("ClipCache", ClipCacheTestClass, TestClipCache)
#endif
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