void GrDrawContext::drawPaint(GrRenderTarget* rt,
const GrClip& clip,
const GrPaint& origPaint,
const SkMatrix& viewMatrix) {
RETURN_IF_ABANDONED
// set rect to be big enough to fill the space, but not super-huge, so we
// don't overflow fixed-point implementations
SkRect r;
r.setLTRB(0, 0,
SkIntToScalar(rt->width()),
SkIntToScalar(rt->height()));
SkTCopyOnFirstWrite<GrPaint> paint(origPaint);
// by definition this fills the entire clip, no need for AA
if (paint->isAntiAlias()) {
paint.writable()->setAntiAlias(false);
}
bool isPerspective = viewMatrix.hasPerspective();
// We attempt to map r by the inverse matrix and draw that. mapRect will
// map the four corners and bound them with a new rect. This will not
// produce a correct result for some perspective matrices.
if (!isPerspective) {
SkMatrix inverse;
if (!viewMatrix.invert(&inverse)) {
SkDebugf("Could not invert matrix\n");
return;
}
inverse.mapRect(&r);
this->drawRect(rt, clip, *paint, viewMatrix, r);
} else {
SkMatrix localMatrix;
if (!viewMatrix.invert(&localMatrix)) {
SkDebugf("Could not invert matrix\n");
return;
}
AutoCheckFlush acf(fContext);
if (!this->prepareToDraw(rt)) {
return;
}
GrPipelineBuilder pipelineBuilder(*paint, rt, clip);
fDrawTarget->drawBWRect(pipelineBuilder,
paint->getColor(),
SkMatrix::I(),
r,
NULL,
&localMatrix);
}
}
bool Surface::paint(SkCanvas* canvas)
{
if (singleLayer()) {
getFirstLayer()->contentDraw(canvas, Layer::UnmergedLayers);
// TODO: double buffer by disabling SurfaceCollection swaps and position
// updates until painting complete
// In single surface mode, draw layer content onto the base layer
if (isBase()
&& getFirstLayer()->countChildren()
&& getFirstLayer()->state()->isSingleSurfaceRenderingMode()) {
for (int i = 0; i < getFirstLayer()->countChildren(); i++)
getFirstLayer()->getChild(i)->drawCanvas(canvas, true, Layer::FlattenedLayers);
}
} else {
SkAutoCanvasRestore acr(canvas, true);
SkMatrix matrix;
GLUtils::toSkMatrix(matrix, m_drawTransform);
SkMatrix inverse;
inverse.reset();
matrix.invert(&inverse);
SkMatrix canvasMatrix = canvas->getTotalMatrix();
inverse.postConcat(canvasMatrix);
canvas->setMatrix(inverse);
for (unsigned int i=0; i<m_layers.size(); i++)
m_layers[i]->drawCanvas(canvas, false, Layer::MergedLayers);
}
return true;
}
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
GrDrawTarget* target,
GrPipelineBuilder* pipelineBuilder,
GrColor color,
const SkMatrix& viewMatrix,
const SkIRect& rect) {
SkMatrix invert;
if (!viewMatrix.invert(&invert)) {
return;
}
GrPipelineBuilder::AutoRestoreFragmentProcessors arfp(pipelineBuilder);
SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
SK_Scalar1 * rect.fTop,
SK_Scalar1 * rect.fRight,
SK_Scalar1 * rect.fBottom);
// We use device coords to compute the texture coordinates. We take the device coords and apply
// a translation so that the top-left of the device bounds maps to 0,0, and then a scaling
// matrix to normalized coords.
SkMatrix maskMatrix;
maskMatrix.setIDiv(texture->width(), texture->height());
maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
pipelineBuilder->addCoverageProcessor(
GrSimpleTextureEffect::Create(texture,
maskMatrix,
GrTextureParams::kNone_FilterMode,
kDevice_GrCoordSet))->unref();
target->drawRect(pipelineBuilder, color, SkMatrix::I(), dstRect, NULL, &invert);
}
SkPoint invertPt(SkScalar x, SkScalar y) {
SkPoint pt;
SkMatrix m;
fMatrix.invert(&m);
m.mapXY(x, y, &pt);
return pt;
}
void GrSWMaskHelper::DrawToTargetWithShapeMask(sk_sp<GrTextureProxy> proxy,
GrRenderTargetContext* renderTargetContext,
GrPaint&& paint,
const GrUserStencilSettings& userStencilSettings,
const GrClip& clip,
const SkMatrix& viewMatrix,
const SkIPoint& textureOriginInDeviceSpace,
const SkIRect& deviceSpaceRectToDraw) {
SkMatrix invert;
if (!viewMatrix.invert(&invert)) {
return;
}
GrResourceProvider* resourceProvider = renderTargetContext->resourceProvider();
SkRect dstRect = SkRect::Make(deviceSpaceRectToDraw);
// We use device coords to compute the texture coordinates. We take the device coords and apply
// a translation so that the top-left of the device bounds maps to 0,0, and then a scaling
// matrix to normalized coords.
SkMatrix maskMatrix = SkMatrix::MakeTrans(SkIntToScalar(-textureOriginInDeviceSpace.fX),
SkIntToScalar(-textureOriginInDeviceSpace.fY));
maskMatrix.preConcat(viewMatrix);
std::unique_ptr<GrLegacyMeshDrawOp> op = GrRectOpFactory::MakeNonAAFill(
paint.getColor(), SkMatrix::I(), dstRect, nullptr, &invert);
paint.addCoverageFragmentProcessor(GrSimpleTextureEffect::Make(
resourceProvider, std::move(proxy), nullptr, maskMatrix,
GrSamplerParams::kNone_FilterMode));
GrPipelineBuilder pipelineBuilder(std::move(paint), GrAAType::kNone);
pipelineBuilder.setUserStencil(&userStencilSettings);
renderTargetContext->addLegacyMeshDrawOp(std::move(pipelineBuilder), clip, std::move(op));
}
static bool inverse_transform_bbox(const SkMatrix& matrix, SkRect* bbox) {
SkMatrix inverse;
if (!matrix.invert(&inverse)) {
return false;
}
inverse.mapRect(bbox);
return true;
}
Boolean Matrix::NativeInvert(
/* [in] */ Int64 matrixHandle,
/* [in] */ Int64 inverseHandle)
{
SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
SkMatrix* inverse = reinterpret_cast<SkMatrix*>(inverseHandle);
return matrix->invert(inverse);
}
virtual void onDraw(SkCanvas* canvas) {
SkMatrix m;
m.reset();
m.setRotate(33 * SK_Scalar1);
m.postScale(3000 * SK_Scalar1, 3000 * SK_Scalar1);
m.postTranslate(6000 * SK_Scalar1, -5000 * SK_Scalar1);
canvas->concat(m);
SkPaint paint;
paint.setColor(SK_ColorRED);
paint.setAntiAlias(true);
bool success = m.invert(&m);
SkASSERT(success);
(void) success; // silence compiler :(
SkPath path;
SkPoint pt = {10 * SK_Scalar1, 10 * SK_Scalar1};
SkScalar small = 1 / (500 * SK_Scalar1);
m.mapPoints(&pt, 1);
path.addCircle(pt.fX, pt.fY, small);
canvas->drawPath(path, paint);
pt.set(30 * SK_Scalar1, 10 * SK_Scalar1);
m.mapPoints(&pt, 1);
SkRect rect = {pt.fX - small, pt.fY - small,
pt.fX + small, pt.fY + small};
canvas->drawRect(rect, paint);
SkBitmap bmp;
bmp.setConfig(SkBitmap::kARGB_8888_Config, 2, 2);
bmp.allocPixels();
bmp.lockPixels();
uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp.getPixels());
pixels[0] = SkPackARGB32(0xFF, 0xFF, 0x00, 0x00);
pixels[1] = SkPackARGB32(0xFF, 0x00, 0xFF, 0x00);
pixels[2] = SkPackARGB32(0x80, 0x00, 0x00, 0x00);
pixels[3] = SkPackARGB32(0xFF, 0x00, 0x00, 0xFF);
bmp.unlockPixels();
pt.set(30 * SK_Scalar1, 30 * SK_Scalar1);
m.mapPoints(&pt, 1);
SkShader* shader = SkShader::CreateBitmapShader(
bmp,
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode);
SkMatrix s;
s.reset();
s.setScale(SK_Scalar1 / 1000, SK_Scalar1 / 1000);
shader->setLocalMatrix(s);
paint.setShader(shader)->unref();
paint.setAntiAlias(false);
paint.setFilterLevel(SkPaint::kLow_FilterLevel);
rect.setLTRB(pt.fX - small, pt.fY - small,
pt.fX + small, pt.fY + small);
canvas->drawRect(rect, paint);
}
sk_sp<SkNormalSource> SkNormalSource::MakeFromNormalMap(sk_sp<SkShader> map, const SkMatrix& ctm) {
SkMatrix invCTM;
if (!ctm.invert(&invCTM) || !map) {
return nullptr;
}
return sk_make_sp<SkNormalMapSourceImpl>(std::move(map), invCTM);
}
bool SkNormalMapSourceImpl::computeNormTotalInverse(const SkShaderBase::ContextRec& rec,
SkMatrix* normTotalInverse) const {
SkMatrix total = SkMatrix::Concat(*rec.fMatrix, fMapShader->getLocalMatrix());
if (rec.fLocalMatrix) {
total.preConcat(*rec.fLocalMatrix);
}
return total.invert(normTotalInverse);
}
bool GrAAHairLinePathRenderer::createGeom(
const SkPath& path,
GrDrawTarget* target,
int* lineCnt,
int* quadCnt,
GrDrawTarget::AutoReleaseGeometry* arg) {
const GrDrawState& drawState = target->getDrawState();
int rtHeight = drawState.getRenderTarget()->height();
GrIRect devClipBounds;
target->getClip()->getConservativeBounds(drawState.getRenderTarget(),
&devClipBounds);
GrVertexLayout layout = GrDrawState::kEdge_VertexLayoutBit;
SkMatrix viewM = drawState.getViewMatrix();
PREALLOC_PTARRAY(128) lines;
PREALLOC_PTARRAY(128) quads;
IntArray qSubdivs;
*quadCnt = generate_lines_and_quads(path, viewM, devClipBounds,
&lines, &quads, &qSubdivs);
*lineCnt = lines.count() / 2;
int vertCnt = kVertsPerLineSeg * *lineCnt + kVertsPerQuad * *quadCnt;
GrAssert(sizeof(Vertex) == GrDrawState::VertexSize(layout));
if (!arg->set(target, layout, vertCnt, 0)) {
return false;
}
Vertex* verts = reinterpret_cast<Vertex*>(arg->vertices());
const SkMatrix* toDevice = NULL;
const SkMatrix* toSrc = NULL;
SkMatrix ivm;
if (viewM.hasPerspective()) {
if (viewM.invert(&ivm)) {
toDevice = &viewM;
toSrc = &ivm;
}
}
for (int i = 0; i < *lineCnt; ++i) {
add_line(&lines[2*i], rtHeight, toSrc, &verts);
}
int unsubdivQuadCnt = quads.count() / 3;
for (int i = 0; i < unsubdivQuadCnt; ++i) {
GrAssert(qSubdivs[i] >= 0);
add_quads(&quads[3*i], qSubdivs[i], toDevice, toSrc, &verts);
}
return true;
}
void draw(SkCanvas* canvas) {
SkMatrix matrix;
matrix.setAll(1, 0, 0, 0, 1, 0, 0, 0, 0);
if (matrix.invert(&matrix)) {
SkScalar factor[2] = {2, 2};
bool result = matrix.getMinMaxScales(factor);
SkDebugf("matrix.getMinMaxScales() %s %g %g\n",
result ? "true" : "false", factor[0], factor[1]);
}
}
static void android_view_RenderNode_getInverseTransformMatrix(JNIEnv* env,
jobject clazz, jlong renderNodePtr, jlong outMatrixPtr) {
// load transform matrix
android_view_RenderNode_getTransformMatrix(env, clazz, renderNodePtr, outMatrixPtr);
SkMatrix* outMatrix = reinterpret_cast<SkMatrix*>(outMatrixPtr);
// return it inverted
if (!outMatrix->invert(outMatrix)) {
// failed to load inverse, pass back identity
outMatrix->setIdentity();
}
}
SkGLDevice::TexCache* SkGLDevice::setupGLPaintShader(const SkPaint& paint) {
SkGL::SetPaint(paint);
SkShader* shader = paint.getShader();
if (NULL == shader) {
return NULL;
}
if (!shader->setContext(this->accessBitmap(false), paint, this->matrix())) {
return NULL;
}
SkBitmap bitmap;
SkMatrix matrix;
SkShader::TileMode tileModes[2];
if (!shader->asABitmap(&bitmap, &matrix, tileModes)) {
return NULL;
}
bitmap.lockPixels();
if (!bitmap.readyToDraw()) {
return NULL;
}
// see if we've already cached the bitmap from the shader
SkPoint max;
GLuint name;
TexCache* cache = SkGLDevice::LockTexCache(bitmap, &name, &max);
// the lock has already called glBindTexture for us
SkGL::SetTexParams(paint.isFilterBitmap(), tileModes[0], tileModes[1]);
// since our texture coords will be in local space, we wack the texture
// matrix to map them back into 0...1 before we load it
SkMatrix localM;
if (shader->getLocalMatrix(&localM)) {
SkMatrix inverse;
if (localM.invert(&inverse)) {
matrix.preConcat(inverse);
}
}
matrix.postScale(max.fX / bitmap.width(), max.fY / bitmap.height());
glMatrixMode(GL_TEXTURE);
SkGL::LoadMatrix(matrix);
glMatrixMode(GL_MODELVIEW);
// since we're going to use a shader/texture, we don't want the color,
// just its alpha
SkGL::SetAlpha(paint.getAlpha());
// report that we have setup the texture
return cache;
}
bool SkView::globalToLocal(SkScalar x, SkScalar y, SkPoint* local) const {
if (local) {
SkMatrix m;
this->localToGlobal(&m);
if (!m.invert(&m)) {
return false;
}
SkPoint p;
m.mapXY(x, y, &p);
local->set(p.fX, p.fY);
}
return true;
}
// Solves linear system to extract klm
// P.K = k (similarly for l, m)
// Where P is matrix of control points
// K is coefficients for the line K
// k is vector of values of K evaluated at the control points
// Solving for K, thus K = P^(-1) . k
static void calc_cubic_klm(const SkPoint p[4], const SkScalar controlK[4],
const SkScalar controlL[4], const SkScalar controlM[4],
SkScalar k[3], SkScalar l[3], SkScalar m[3]) {
SkMatrix matrix;
matrix.setAll(p[0].fX, p[0].fY, 1.f,
p[1].fX, p[1].fY, 1.f,
p[2].fX, p[2].fY, 1.f);
SkMatrix inverse;
if (matrix.invert(&inverse)) {
inverse.mapHomogeneousPoints(k, controlK, 1);
inverse.mapHomogeneousPoints(l, controlL, 1);
inverse.mapHomogeneousPoints(m, controlM, 1);
}
}
FloatRect FEBoxReflect::mapRect(const FloatRect& rect, bool forward)
{
SkMatrix flipMatrix = SkiaImageFilterBuilder().matrixForBoxReflectFilter(
m_reflectionDirection, m_offset);
if (!forward) {
bool inverted = flipMatrix.invert(&flipMatrix);
DCHECK(inverted) << "box reflect matrix must be invertible";
}
SkRect reflection(rect);
flipMatrix.mapRect(&reflection);
FloatRect result = rect;
result.unite(reflection);
return result;
}
/*
[0] 9.9999997e-005 float
[1] 9.0000003e-006 float
[2] 7.0000001e-006 float
[3] 1000000.0 float
[4] 90639.000 float
[5] 70000.000 float
[6] 0.00000000 float
[7] 0.00000000 float
[8] 1.0000000 float
*/
static void testinvert2() {
const float val[] = {
9.9999997e-005, 9.0000003e-006, 7.0000001e-006,
1000000.0, 90639.000, 70000.000
};
SkMatrix matrix;
setmatrix6(&matrix, val);
matrix.dump();
SkMatrix inverse;
matrix.invert(&inverse);
inverse.dump();
matrix.preConcat(inverse);
matrix.dump();
// result is that matrix[3] is 49550 instead of 0 :(
}
// Draw a mask using the supplied paint. Since the coverage/geometry
// is already burnt into the mask this boils down to a rect draw.
// Return true if the mask was successfully drawn.
static bool draw_mask(GrDrawContext* drawContext,
const GrClip& clip,
const SkMatrix& viewMatrix,
const SkRect& maskRect,
GrPaint* grp,
GrTexture* mask) {
SkMatrix matrix;
matrix.setTranslate(-maskRect.fLeft, -maskRect.fTop);
matrix.postIDiv(mask->width(), mask->height());
grp->addCoverageFragmentProcessor(GrSimpleTextureEffect::Create(mask, matrix,
kDevice_GrCoordSet))->unref();
SkMatrix inverse;
if (!viewMatrix.invert(&inverse)) {
return false;
}
drawContext->fillRectWithLocalMatrix(clip, *grp, SkMatrix::I(), maskRect, inverse);
return true;
}
sk_sp<GrGeometryProcessor> GrDefaultGeoProcFactory::MakeForDeviceSpace(
const Color& color,
const Coverage& coverage,
const LocalCoords& localCoords,
const SkMatrix& viewMatrix) {
SkMatrix invert = SkMatrix::I();
if (LocalCoords::kUnused_Type != localCoords.fType) {
SkASSERT(LocalCoords::kUsePosition_Type == localCoords.fType);
if (!viewMatrix.isIdentity() && !viewMatrix.invert(&invert)) {
return nullptr;
}
if (localCoords.hasLocalMatrix()) {
invert.preConcat(*localCoords.fMatrix);
}
}
LocalCoords inverted(LocalCoords::kUsePosition_Type, &invert);
return Make(color, coverage, inverted, SkMatrix::I());
}
// Draw a mask using the supplied paint. Since the coverage/geometry
// is already burnt into the mask this boils down to a rect draw.
// Return true if the mask was successfully drawn.
static bool draw_mask(GrDrawContext* drawContext,
const GrClip& clip,
const SkMatrix& viewMatrix,
const SkIRect& maskRect,
GrPaint* grp,
GrTexture* mask) {
SkMatrix matrix;
matrix.setTranslate(-SkIntToScalar(maskRect.fLeft), -SkIntToScalar(maskRect.fTop));
matrix.postIDiv(mask->width(), mask->height());
matrix.preConcat(viewMatrix);
grp->addCoverageFragmentProcessor(GrSimpleTextureEffect::Make(mask, nullptr, matrix));
SkMatrix inverse;
if (!viewMatrix.invert(&inverse)) {
return false;
}
drawContext->fillRectWithLocalMatrix(clip, *grp, SkMatrix::I(), SkRect::Make(maskRect),
inverse);
return true;
}
WarpView() {
SkBitmap bm;
// SkImageDecoder::DecodeFile("/skimages/marker.png", &bm);
SkImageDecoder::DecodeFile("/skimages/logo.gif", &bm);
// SkImageDecoder::DecodeFile("/beach_shot.JPG", &bm);
fBitmap = bm;
SkRect bounds, texture;
texture.set(0, 0, SkIntToScalar(fBitmap.width()),
SkIntToScalar(fBitmap.height()));
bounds = texture;
// fMesh.init(bounds, fBitmap.width() / 40, fBitmap.height() / 40, texture);
fMesh.init(bounds, fBitmap.width()/16, fBitmap.height()/16, texture);
fOrig = fMesh;
fP0.set(0, 0);
fP1 = fP0;
fMatrix.setScale(2, 2);
fMatrix.invert(&fInverse);
}
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
GrDrawContext* drawContext,
const GrPaint* paint,
const GrUserStencilSettings* userStencilSettings,
const GrClip& clip,
GrColor color,
const SkMatrix& viewMatrix,
const SkIRect& rect) {
SkMatrix invert;
if (!viewMatrix.invert(&invert)) {
return;
}
SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
SK_Scalar1 * rect.fTop,
SK_Scalar1 * rect.fRight,
SK_Scalar1 * rect.fBottom);
// We use device coords to compute the texture coordinates. We take the device coords and apply
// a translation so that the top-left of the device bounds maps to 0,0, and then a scaling
// matrix to normalized coords.
SkMatrix maskMatrix;
maskMatrix.setIDiv(texture->width(), texture->height());
maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
GrPipelineBuilder pipelineBuilder(*paint, drawContext->isUnifiedMultisampled());
pipelineBuilder.setRenderTarget(drawContext->accessRenderTarget());
pipelineBuilder.setUserStencil(userStencilSettings);
pipelineBuilder.addCoverageFragmentProcessor(
GrSimpleTextureEffect::Create(texture,
maskMatrix,
GrTextureParams::kNone_FilterMode,
kDevice_GrCoordSet))->unref();
SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(),
dstRect, nullptr, &invert));
drawContext->drawBatch(pipelineBuilder, clip, batch);
}
void GrSoftwarePathRenderer::DrawAroundInvPath(GrDrawContext* drawContext,
const GrPaint* paint,
const GrUserStencilSettings* userStencilSettings,
const GrClip& clip,
GrColor color,
const SkMatrix& viewMatrix,
const SkIRect& devClipBounds,
const SkIRect& devPathBounds) {
SkMatrix invert;
if (!viewMatrix.invert(&invert)) {
return;
}
SkRect rect;
if (devClipBounds.fTop < devPathBounds.fTop) {
rect.iset(devClipBounds.fLeft, devClipBounds.fTop,
devClipBounds.fRight, devPathBounds.fTop);
DrawNonAARect(drawContext, paint, userStencilSettings, clip, color,
SkMatrix::I(), rect, invert);
}
if (devClipBounds.fLeft < devPathBounds.fLeft) {
rect.iset(devClipBounds.fLeft, devPathBounds.fTop,
devPathBounds.fLeft, devPathBounds.fBottom);
DrawNonAARect(drawContext, paint, userStencilSettings, clip, color,
SkMatrix::I(), rect, invert);
}
if (devClipBounds.fRight > devPathBounds.fRight) {
rect.iset(devPathBounds.fRight, devPathBounds.fTop,
devClipBounds.fRight, devPathBounds.fBottom);
DrawNonAARect(drawContext, paint, userStencilSettings, clip, color,
SkMatrix::I(), rect, invert);
}
if (devClipBounds.fBottom > devPathBounds.fBottom) {
rect.iset(devClipBounds.fLeft, devPathBounds.fBottom,
devClipBounds.fRight, devClipBounds.fBottom);
DrawNonAARect(drawContext, paint, userStencilSettings, clip, color,
SkMatrix::I(), rect, invert);
}
}
bool SkMatrixImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
SkIRect* dst) const {
SkMatrix transformInverse;
if (!fTransform.invert(&transformInverse)) {
return false;
}
SkMatrix matrix;
if (!ctm.invert(&matrix)) {
return false;
}
matrix.postConcat(transformInverse);
matrix.postConcat(ctm);
SkRect floatBounds;
matrix.mapRect(&floatBounds, SkRect::Make(src));
SkIRect bounds = floatBounds.roundOut();
if (getInput(0) && !getInput(0)->filterBounds(bounds, ctm, &bounds)) {
return false;
}
*dst = bounds;
return true;
}
// This test case including path coords and matrix taken from crbug.com/627443.
// Because of inaccuracies in large floating point values this causes the
// the path renderer to attempt to add a path DF to its atlas that is larger
// than the plot size which used to crash rather than fail gracefully.
static void test_far_from_origin(GrDrawContext* drawContext, GrPathRenderer* pr,
GrResourceProvider* rp) {
SkPath path;
path.lineTo(49.0255089839f, 0.473541f);
static constexpr SkScalar mvals[] = {14.0348252854f, 2.13026182736f,
13.6122547187f, 118.309922702f,
1912337682.09f, 2105391889.87f};
SkMatrix matrix;
matrix.setAffine(mvals);
SkMatrix inverse;
SkAssertResult(matrix.invert(&inverse));
path.transform(inverse);
SkStrokeRec rec(SkStrokeRec::kFill_InitStyle);
rec.setStrokeStyle(1.f);
rec.setStrokeParams(SkPaint::kRound_Cap, SkPaint::kRound_Join, 1.f);
GrStyle style(rec, nullptr);
GrShape shape(path, style);
shape = shape.applyStyle(GrStyle::Apply::kPathEffectAndStrokeRec, 1.f);
GrPaint paint;
paint.setXPFactory(GrPorterDuffXPFactory::Make(SkXfermode::kSrc_Mode));
GrNoClip noClip;
GrPathRenderer::DrawPathArgs args;
args.fPaint = &paint;
args.fUserStencilSettings = &GrUserStencilSettings::kUnused;
args.fDrawContext = drawContext;
args.fClip = &noClip;
args.fResourceProvider = rp;
args.fViewMatrix = &matrix;
args.fShape = &shape;
args.fAntiAlias = true;
args.fGammaCorrect = false;
args.fColor = 0x0;
pr->drawPath(args);
}
static void testinvert() {
SkMatrix matrix;
const float vals[] = { 0,9,.000001,10000,0,0 };
setmatrix6(&matrix, vals);
const float vals2[] = { 0,100,71,9,0,7 };
SkMatrix tmp;
setmatrix6(&tmp, vals2);
matrix.preConcat(tmp);
matrix.dump();
SkMatrix inverse;
matrix.invert(&inverse);
inverse.dump();
matrix.preConcat(inverse);
matrix.dump();
// o2dContext.setTransform(0,9,.000001,10000,0,0);
// o2dContext.transform(0,100,71,9,0,7);
// o2dContext.setTransform(0,6,95,4,1,0);
}
// Attempt to trim the line to minimally cover the cull rect (currently
// only works for horizontal and vertical lines).
// Return true if processing should continue; false otherwise.
static bool cull_line(SkPoint* pts, const SkStrokeRec& rec,
const SkMatrix& ctm, const SkRect* cullRect,
const SkScalar intervalLength) {
if (nullptr == cullRect) {
SkASSERT(false); // Shouldn't ever occur in practice
return false;
}
SkScalar dx = pts[1].x() - pts[0].x();
SkScalar dy = pts[1].y() - pts[0].y();
if ((dx && dy) || (!dx && !dy)) {
return false;
}
SkRect bounds = *cullRect;
outset_for_stroke(&bounds, rec);
// cullRect is in device space while pts are in the local coordinate system
// defined by the ctm. We want our answer in the local coordinate system.
SkASSERT(ctm.rectStaysRect());
SkMatrix inv;
if (!ctm.invert(&inv)) {
return false;
}
inv.mapRect(&bounds);
if (dx) {
SkASSERT(dx && !dy);
SkScalar minX = pts[0].fX;
SkScalar maxX = pts[1].fX;
if (dx < 0) {
SkTSwap(minX, maxX);
}
SkASSERT(minX < maxX);
if (maxX <= bounds.fLeft || minX >= bounds.fRight) {
return false;
}
// Now we actually perform the chop, removing the excess to the left and
// right of the bounds (keeping our new line "in phase" with the dash,
// hence the (mod intervalLength).
if (minX < bounds.fLeft) {
minX = bounds.fLeft - SkScalarMod(bounds.fLeft - minX, intervalLength);
}
if (maxX > bounds.fRight) {
maxX = bounds.fRight + SkScalarMod(maxX - bounds.fRight, intervalLength);
}
SkASSERT(maxX > minX);
if (dx < 0) {
SkTSwap(minX, maxX);
}
pts[0].fX = minX;
pts[1].fX = maxX;
} else {
SkASSERT(dy && !dx);
SkScalar minY = pts[0].fY;
SkScalar maxY = pts[1].fY;
if (dy < 0) {
SkTSwap(minY, maxY);
}
SkASSERT(minY < maxY);
if (maxY <= bounds.fTop || minY >= bounds.fBottom) {
return false;
}
// Now we actually perform the chop, removing the excess to the top and
// bottom of the bounds (keeping our new line "in phase" with the dash,
// hence the (mod intervalLength).
if (minY < bounds.fTop) {
minY = bounds.fTop - SkScalarMod(bounds.fTop - minY, intervalLength);
}
if (maxY > bounds.fBottom) {
maxY = bounds.fBottom + SkScalarMod(maxY - bounds.fBottom, intervalLength);
}
SkASSERT(maxY > minY);
if (dy < 0) {
SkTSwap(minY, maxY);
}
pts[0].fY = minY;
pts[1].fY = maxY;
}
return true;
}
void GrBitmapTextContext::onDrawText(GrRenderTarget* rt, const GrClip& clip,
const GrPaint& paint, const SkPaint& skPaint,
const SkMatrix& viewMatrix,
const char text[], size_t byteLength,
SkScalar x, SkScalar y) {
SkASSERT(byteLength == 0 || text != NULL);
// nothing to draw
if (text == NULL || byteLength == 0 /*|| fRC->isEmpty()*/) {
return;
}
this->init(rt, clip, paint, skPaint);
SkDrawCacheProc glyphCacheProc = fSkPaint.getDrawCacheProc();
SkAutoGlyphCache autoCache(fSkPaint, &fDeviceProperties, &viewMatrix);
SkGlyphCache* cache = autoCache.getCache();
GrFontScaler* fontScaler = GetGrFontScaler(cache);
// transform our starting point
{
SkPoint loc;
viewMatrix.mapXY(x, y, &loc);
x = loc.fX;
y = loc.fY;
}
// need to measure first
int numGlyphs;
if (fSkPaint.getTextAlign() != SkPaint::kLeft_Align) {
SkVector stopVector;
numGlyphs = MeasureText(cache, glyphCacheProc, text, byteLength, &stopVector);
SkScalar stopX = stopVector.fX;
SkScalar stopY = stopVector.fY;
if (fSkPaint.getTextAlign() == SkPaint::kCenter_Align) {
stopX = SkScalarHalf(stopX);
stopY = SkScalarHalf(stopY);
}
x -= stopX;
y -= stopY;
} else {
numGlyphs = fSkPaint.textToGlyphs(text, byteLength, NULL);
}
fTotalVertexCount = kVerticesPerGlyph*numGlyphs;
const char* stop = text + byteLength;
SkAutoKern autokern;
SkFixed fxMask = ~0;
SkFixed fyMask = ~0;
SkScalar halfSampleX, halfSampleY;
if (cache->isSubpixel()) {
halfSampleX = halfSampleY = SkFixedToScalar(SkGlyph::kSubpixelRound);
SkAxisAlignment baseline = SkComputeAxisAlignmentForHText(viewMatrix);
if (kX_SkAxisAlignment == baseline) {
fyMask = 0;
halfSampleY = SK_ScalarHalf;
} else if (kY_SkAxisAlignment == baseline) {
fxMask = 0;
halfSampleX = SK_ScalarHalf;
}
} else {
halfSampleX = halfSampleY = SK_ScalarHalf;
}
Sk48Dot16 fx = SkScalarTo48Dot16(x + halfSampleX);
Sk48Dot16 fy = SkScalarTo48Dot16(y + halfSampleY);
// if we have RGB, then we won't have any SkShaders so no need to use a localmatrix, but for
// performance reasons we just invert here instead
if (!viewMatrix.invert(&fLocalMatrix)) {
SkDebugf("Cannot invert viewmatrix\n");
return;
}
while (text < stop) {
const SkGlyph& glyph = glyphCacheProc(cache, &text, fx & fxMask, fy & fyMask);
fx += autokern.adjust(glyph);
if (glyph.fWidth) {
this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(),
glyph.getSubXFixed(),
glyph.getSubYFixed(),
GrGlyph::kCoverage_MaskStyle),
Sk48Dot16FloorToInt(fx),
Sk48Dot16FloorToInt(fy),
fontScaler);
}
fx += glyph.fAdvanceX;
fy += glyph.fAdvanceY;
}
this->finish();
}
void GrBitmapTextContext::onDrawPosText(GrRenderTarget* rt, const GrClip& clip,
const GrPaint& paint, const SkPaint& skPaint,
const SkMatrix& viewMatrix,
const char text[], size_t byteLength,
const SkScalar pos[], int scalarsPerPosition,
const SkPoint& offset) {
SkASSERT(byteLength == 0 || text != NULL);
SkASSERT(1 == scalarsPerPosition || 2 == scalarsPerPosition);
// nothing to draw
if (text == NULL || byteLength == 0/* || fRC->isEmpty()*/) {
return;
}
this->init(rt, clip, paint, skPaint);
SkDrawCacheProc glyphCacheProc = fSkPaint.getDrawCacheProc();
SkAutoGlyphCache autoCache(fSkPaint, &fDeviceProperties, &viewMatrix);
SkGlyphCache* cache = autoCache.getCache();
GrFontScaler* fontScaler = GetGrFontScaler(cache);
// if we have RGB, then we won't have any SkShaders so no need to use a localmatrix, but for
// performance reasons we just invert here instead
if (!viewMatrix.invert(&fLocalMatrix)) {
SkDebugf("Cannot invert viewmatrix\n");
return;
}
int numGlyphs = fSkPaint.textToGlyphs(text, byteLength, NULL);
fTotalVertexCount = kVerticesPerGlyph*numGlyphs;
const char* stop = text + byteLength;
SkTextAlignProc alignProc(fSkPaint.getTextAlign());
SkTextMapStateProc tmsProc(viewMatrix, offset, scalarsPerPosition);
SkScalar halfSampleX = 0, halfSampleY = 0;
if (cache->isSubpixel()) {
// maybe we should skip the rounding if linearText is set
SkAxisAlignment baseline = SkComputeAxisAlignmentForHText(viewMatrix);
SkFixed fxMask = ~0;
SkFixed fyMask = ~0;
if (kX_SkAxisAlignment == baseline) {
fyMask = 0;
halfSampleY = SK_ScalarHalf;
} else if (kY_SkAxisAlignment == baseline) {
fxMask = 0;
halfSampleX = SK_ScalarHalf;
}
if (SkPaint::kLeft_Align == fSkPaint.getTextAlign()) {
while (text < stop) {
SkPoint tmsLoc;
tmsProc(pos, &tmsLoc);
Sk48Dot16 fx = SkScalarTo48Dot16(tmsLoc.fX + halfSampleX);
Sk48Dot16 fy = SkScalarTo48Dot16(tmsLoc.fY + halfSampleY);
const SkGlyph& glyph = glyphCacheProc(cache, &text,
fx & fxMask, fy & fyMask);
if (glyph.fWidth) {
this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(),
glyph.getSubXFixed(),
glyph.getSubYFixed(),
GrGlyph::kCoverage_MaskStyle),
Sk48Dot16FloorToInt(fx),
Sk48Dot16FloorToInt(fy),
fontScaler);
}
pos += scalarsPerPosition;
}
} else {
while (text < stop) {
const char* currentText = text;
const SkGlyph& metricGlyph = glyphCacheProc(cache, &text, 0, 0);
if (metricGlyph.fWidth) {
SkDEBUGCODE(SkFixed prevAdvX = metricGlyph.fAdvanceX;)
SkDEBUGCODE(SkFixed prevAdvY = metricGlyph.fAdvanceY;)
SkPoint tmsLoc;
tmsProc(pos, &tmsLoc);
SkPoint alignLoc;
alignProc(tmsLoc, metricGlyph, &alignLoc);
Sk48Dot16 fx = SkScalarTo48Dot16(alignLoc.fX + halfSampleX);
Sk48Dot16 fy = SkScalarTo48Dot16(alignLoc.fY + halfSampleY);
// have to call again, now that we've been "aligned"
const SkGlyph& glyph = glyphCacheProc(cache, ¤tText,
fx & fxMask, fy & fyMask);
// the assumption is that the metrics haven't changed
SkASSERT(prevAdvX == glyph.fAdvanceX);
SkASSERT(prevAdvY == glyph.fAdvanceY);
SkASSERT(glyph.fWidth);
this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(),
glyph.getSubXFixed(),
glyph.getSubYFixed(),
GrGlyph::kCoverage_MaskStyle),
Sk48Dot16FloorToInt(fx),
Sk48Dot16FloorToInt(fy),
fontScaler);
}