// 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;
}
SkAutoUnref au(texture);
SkIRect intScreen = SkIRect::MakeWH(kXSize, kYSize);
SkRect screen;
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);
}
////////////////////////////////////////////////////////////////////////////////
// Shared preamble between gpu and SW-only AA clip mask creation paths.
// Handles caching, determination of clip mask bound & allocation (if needed)
// of the result texture
// Returns true if there is no more work to be done (i.e., we got a cache hit)
bool GrClipMaskManager::clipMaskPreamble(const GrClipData& clipDataIn,
GrTexture** result,
GrIRect* devResultBounds) {
GrDrawState* origDrawState = fGpu->drawState();
GrAssert(origDrawState->isClipState());
GrRenderTarget* rt = origDrawState->getRenderTarget();
GrAssert(NULL != rt);
// unlike the stencil path the alpha path is not bound to the size of the
// render target - determine the minimum size required for the mask
// Note: intBounds is in device (as opposed to canvas) coordinates
clipDataIn.getConservativeBounds(rt, devResultBounds);
// need to outset a pixel since the standard bounding box computation
// path doesn't leave any room for antialiasing (esp. w.r.t. rects)
devResultBounds->outset(1, 1);
// TODO: make sure we don't outset if bounds are still 0,0 @ min
if (fAACache.canReuse(*clipDataIn.fClipStack, *devResultBounds)) {
*result = fAACache.getLastMask();
fAACache.getLastBound(devResultBounds);
return true;
}
this->setupCache(*clipDataIn.fClipStack, *devResultBounds);
return false;
}