const char* GrGLSLVectorHomogCoord(int count) {
static const char* HOMOGS[] = {"ERROR", "", ".y", ".z", ".w"};
GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(HOMOGS));
return HOMOGS[count];
}
void GrGpu::finalizeReservedIndices() {
GrAssert(NULL != fIndexPool);
fIndexPool->unlock();
}
bool GrAAHairLinePathRenderer::createGeom(GrDrawTarget::StageBitfield stages) {
int rtHeight = fTarget->getRenderTarget()->height();
GrIRect clip;
if (fTarget->getClip().hasConservativeBounds()) {
GrRect clipRect = fTarget->getClip().getConservativeBounds();
clipRect.roundOut(&clip);
} else {
clip.setLargest();
}
// If none of the inputs that affect generation of path geometry have
// have changed since last previous path draw then we can reuse the
// previous geoemtry.
if (stages == fPreviousStages &&
fPreviousViewMatrix == fTarget->getViewMatrix() &&
fPreviousTranslate == fTranslate &&
rtHeight == fPreviousRTHeight &&
fClipRect == clip) {
return true;
}
GrVertexLayout layout = GrDrawTarget::kEdge_VertexLayoutBit;
for (int s = 0; s < GrDrawTarget::kNumStages; ++s) {
if ((1 << s) & stages) {
layout |= GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(s);
}
}
GrMatrix viewM = fTarget->getViewMatrix();
SkAlignedSTStorage<128, GrPoint> lineStorage;
SkAlignedSTStorage<128, GrPoint> quadStorage;
PtArray lines(&lineStorage);
PtArray quads(&quadStorage);
IntArray qSubdivs;
fQuadCnt = generate_lines_and_quads(*fPath, viewM, fTranslate, clip,
&lines, &quads, &qSubdivs);
fLineSegmentCnt = lines.count() / 2;
int vertCnt = kVertsPerLineSeg * fLineSegmentCnt + kVertsPerQuad * fQuadCnt;
GrAssert(sizeof(Vertex) == GrDrawTarget::VertexSize(layout));
Vertex* verts;
if (!fTarget->reserveVertexSpace(layout, vertCnt, (void**)&verts)) {
return false;
}
Vertex* base = verts;
const GrMatrix* toDevice = NULL;
const GrMatrix* toSrc = NULL;
GrMatrix ivm;
if (viewM.hasPerspective()) {
if (viewM.invert(&ivm)) {
toDevice = &viewM;
toSrc = &ivm;
}
}
for (int i = 0; i < fLineSegmentCnt; ++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);
}
fPreviousStages = stages;
fPreviousViewMatrix = fTarget->getViewMatrix();
fPreviousRTHeight = rtHeight;
fClipRect = clip;
fPreviousTranslate = fTranslate;
return true;
}
GrPath* GrGpu::createPath(const SkPath& path) {
GrAssert(fCaps.pathStencilingSupport());
this->handleDirtyContext();
return this->onCreatePath(path);
}
void GrGpu::geometrySourceWillPop(const GeometrySrcState& restoredState) {
// if popping last entry then pops are unbalanced with pushes
GrAssert(fGeomPoolStateStack.count() > 1);
fGeomPoolStateStack.pop_back();
}
bool GrGpuGLShaders::flushGraphicsState(GrPrimitiveType type) {
if (!flushGLStateCommon(type)) {
return false;
}
const GrDrawState& drawState = this->getDrawState();
if (fDirtyFlags.fRenderTargetChanged) {
// our coords are in pixel space and the GL matrices map to NDC
// so if the viewport changed, our matrix is now wrong.
fHWDrawState.setViewMatrix(GrMatrix::InvalidMatrix());
// we assume all shader matrices may be wrong after viewport changes
fProgramCache->invalidateViewMatrices();
}
GrBlendCoeff srcCoeff;
GrBlendCoeff dstCoeff;
BlendOptFlags blendOpts = this->getBlendOpts(false, &srcCoeff, &dstCoeff);
if (kSkipDraw_BlendOptFlag & blendOpts) {
return false;
}
this->buildProgram(type, blendOpts, dstCoeff);
fProgramData = fProgramCache->getProgramData(fCurrentProgram);
if (NULL == fProgramData) {
GrAssert(!"Failed to create program!");
return false;
}
if (fHWProgramID != fProgramData->fProgramID) {
GL_CALL(UseProgram(fProgramData->fProgramID));
fHWProgramID = fProgramData->fProgramID;
}
fCurrentProgram.overrideBlend(&srcCoeff, &dstCoeff);
this->flushBlend(type, srcCoeff, dstCoeff);
GrColor color;
if (blendOpts & kEmitTransBlack_BlendOptFlag) {
color = 0;
} else if (blendOpts & kEmitCoverage_BlendOptFlag) {
color = 0xffffffff;
} else {
color = drawState.getColor();
}
this->flushColor(color);
this->flushViewMatrix();
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
this->flushTextureMatrix(s);
this->flushRadial2(s);
this->flushConvolution(s);
this->flushTexelSize(s);
this->flushTextureDomain(s);
}
this->flushEdgeAAData();
resetDirtyFlags();
return true;
}
void GrGpu::insertResource(GrResource* resource) {
GrAssert(NULL != resource);
GrAssert(this == resource->getGpu());
fResourceList.addToHead(resource);
}
void GrInOrderDrawBuffer::drawRect(const GrRect& rect,
const SkMatrix* matrix,
const GrRect* srcRects[],
const SkMatrix* srcMatrices[]) {
GrAssert(!(NULL == fQuadIndexBuffer && fCurrQuad));
GrAssert(!(fDraws.empty() && fCurrQuad));
GrAssert(!(0 != fMaxQuads && NULL == fQuadIndexBuffer));
GrDrawState* drawState = this->drawState();
// if we have a quad IB then either append to the previous run of
// rects or start a new run
if (fMaxQuads) {
bool appendToPreviousDraw = false;
GrVertexLayout layout = GetRectVertexLayout(srcRects);
// Batching across colors means we move the draw color into the
// rect's vertex colors to allow greater batching (a lot of rects
// in a row differing only in color is a common occurence in tables).
bool batchAcrossColors = true;
if (!this->getCaps().dualSourceBlendingSupport()) {
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
if (this->getDrawState().isStageEnabled(s)) {
// We disable batching across colors when there is a texture
// present because (by pushing the the color to the vertices)
// Ganesh loses track of the rect's opacity. This, in turn, can
// cause some of the blending optimizations to be disabled. This
// becomes a huge problem on some of the smaller devices where
// shader derivatives and dual source blending aren't supported.
// In those cases paths are often drawn to a texture and then
// drawn as a texture (using this method). Because dual source
// blending is disabled (and the blend optimizations are short
// circuited) some of the more esoteric blend modes can no longer
// be supported.
// TODO: add tracking of batchAcrossColors's opacity
batchAcrossColors = false;
break;
}
}
}
if (batchAcrossColors) {
layout |= GrDrawState::kColor_VertexLayoutBit;
}
AutoReleaseGeometry geo(this, layout, 4, 0);
if (!geo.succeeded()) {
GrPrintf("Failed to get space for vertices!\n");
return;
}
SkMatrix combinedMatrix = drawState->getViewMatrix();
// We go to device space so that matrix changes allow us to concat
// rect draws. When the caller has provided explicit source rects
// then we don't want to modify the stages' matrices. Otherwise
// we have to account for the view matrix change in the stage
// matrices.
uint32_t explicitCoordMask = 0;
if (srcRects) {
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
if (srcRects[s]) {
explicitCoordMask |= (1 << s);
}
}
}
GrDrawState::AutoDeviceCoordDraw adcd(this->drawState(), explicitCoordMask);
if (!adcd.succeeded()) {
return;
}
if (NULL != matrix) {
combinedMatrix.preConcat(*matrix);
}
SetRectVertices(rect, &combinedMatrix, srcRects, srcMatrices,
this->getDrawState().getColor(), layout, geo.vertices());
// Now that the paint's color is stored in the vertices set it to
// white so that the following code can batch all the rects regardless
// of paint color
GrDrawState::AutoColorRestore acr(this->drawState(),
batchAcrossColors ? SK_ColorWHITE
: this->getDrawState().getColor());
// we don't want to miss an opportunity to batch rects together
// simply because the clip has changed if the clip doesn't affect
// the rect.
bool disabledClip = false;
if (drawState->isClipState()) {
GrRect devClipRect;
bool isIntersectionOfRects = false;
const GrClipData* clip = this->getClip();
clip->fClipStack->getConservativeBounds(-clip->fOrigin.fX,
-clip->fOrigin.fY,
drawState->getRenderTarget()->width(),
drawState->getRenderTarget()->height(),
&devClipRect,
&isIntersectionOfRects);
if (isIntersectionOfRects) {
// If the clip rect touches the edge of the viewport, extended it
// out (close) to infinity to avoid bogus intersections.
// We might consider a more exact clip to viewport if this
// conservative test fails.
const GrRenderTarget* target = drawState->getRenderTarget();
if (0 >= devClipRect.fLeft) {
devClipRect.fLeft = SK_ScalarMin;
}
if (target->width() <= devClipRect.fRight) {
devClipRect.fRight = SK_ScalarMax;
}
if (0 >= devClipRect.top()) {
devClipRect.fTop = SK_ScalarMin;
}
if (target->height() <= devClipRect.fBottom) {
devClipRect.fBottom = SK_ScalarMax;
}
int stride = GrDrawState::VertexSize(layout);
bool insideClip = true;
for (int v = 0; v < 4; ++v) {
const GrPoint& p = *GrDrawState::GetVertexPoint(geo.vertices(), v, stride);
if (!devClipRect.contains(p)) {
insideClip = false;
break;
}
}
if (insideClip) {
drawState->disableState(GrDrawState::kClip_StateBit);
disabledClip = true;
}
}
}
if (!this->needsNewClip() &&
!this->needsNewState() &&
fCurrQuad > 0 &&
fCurrQuad < fMaxQuads &&
layout == fLastRectVertexLayout) {
int vsize = GrDrawState::VertexSize(layout);
Draw& lastDraw = fDraws.back();
GrAssert(lastDraw.fIndexBuffer == fQuadIndexBuffer);
GrAssert(kTriangles_GrPrimitiveType == lastDraw.fPrimitiveType);
GrAssert(0 == lastDraw.fVertexCount % 4);
GrAssert(0 == lastDraw.fIndexCount % 6);
GrAssert(0 == lastDraw.fStartIndex);
GeometryPoolState& poolState = fGeoPoolStateStack.back();
appendToPreviousDraw =
kDraw_Cmd == fCmds.back() &&
lastDraw.fVertexBuffer == poolState.fPoolVertexBuffer &&
(fCurrQuad * 4 + lastDraw.fStartVertex) == poolState.fPoolStartVertex;
if (appendToPreviousDraw) {
lastDraw.fVertexCount += 4;
lastDraw.fIndexCount += 6;
fCurrQuad += 1;
// we reserved above, so we should be the first
// use of this vertex reservation.
GrAssert(0 == poolState.fUsedPoolVertexBytes);
poolState.fUsedPoolVertexBytes = 4 * vsize;
}
}
if (!appendToPreviousDraw) {
this->setIndexSourceToBuffer(fQuadIndexBuffer);
this->drawIndexed(kTriangles_GrPrimitiveType, 0, 0, 4, 6);
fCurrQuad = 1;
fLastRectVertexLayout = layout;
}
if (disabledClip) {
drawState->enableState(GrDrawState::kClip_StateBit);
}
fInstancedDrawTracker.reset();
} else {
INHERITED::drawRect(rect, matrix, srcRects, srcMatrices);
}
}
void GrInOrderDrawBuffer::onDrawRect(const GrRect& rect,
const SkMatrix* matrix,
const GrRect* localRect,
const SkMatrix* localMatrix) {
GrDrawState::AutoColorRestore acr;
GrDrawState* drawState = this->drawState();
GrColor color = drawState->getColor();
int colorOffset, localOffset;
set_vertex_attributes(drawState,
this->caps()->dualSourceBlendingSupport() || drawState->hasSolidCoverage(),
NULL != localRect,
&colorOffset, &localOffset);
if (colorOffset >= 0) {
// We set the draw state's color to white here. This is done so that any batching performed
// in our subclass's onDraw() won't get a false from GrDrawState::op== due to a color
// mismatch. TODO: Once vertex layout is owned by GrDrawState it should skip comparing the
// constant color in its op== when the kColor layout bit is set and then we can remove
// this.
acr.set(drawState, 0xFFFFFFFF);
}
AutoReleaseGeometry geo(this, 4, 0);
if (!geo.succeeded()) {
GrPrintf("Failed to get space for vertices!\n");
return;
}
// Go to device coords to allow batching across matrix changes
SkMatrix combinedMatrix;
if (NULL != matrix) {
combinedMatrix = *matrix;
} else {
combinedMatrix.reset();
}
combinedMatrix.postConcat(drawState->getViewMatrix());
// When the caller has provided an explicit source rect for a stage then we don't want to
// modify that stage's matrix. Otherwise if the effect is generating its source rect from
// the vertex positions then we have to account for the view matrix change.
GrDrawState::AutoDeviceCoordDraw adcd(drawState);
if (!adcd.succeeded()) {
return;
}
size_t vsize = drawState->getVertexSize();
geo.positions()->setRectFan(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, vsize);
combinedMatrix.mapPointsWithStride(geo.positions(), vsize, 4);
SkRect devBounds;
// since we already computed the dev verts, set the bounds hint. This will help us avoid
// unnecessary clipping in our onDraw().
get_vertex_bounds(geo.vertices(), vsize, 4, &devBounds);
if (localOffset >= 0) {
GrPoint* coords = GrTCast<GrPoint*>(GrTCast<intptr_t>(geo.vertices()) + localOffset);
coords->setRectFan(localRect->fLeft, localRect->fTop,
localRect->fRight, localRect->fBottom,
vsize);
if (NULL != localMatrix) {
localMatrix->mapPointsWithStride(coords, vsize, 4);
}
}
if (colorOffset >= 0) {
GrColor* vertColor = GrTCast<GrColor*>(GrTCast<intptr_t>(geo.vertices()) + colorOffset);
for (int i = 0; i < 4; ++i) {
*vertColor = color;
vertColor = (GrColor*) ((intptr_t) vertColor + vsize);
}
}
this->setIndexSourceToBuffer(this->getContext()->getQuadIndexBuffer());
this->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, 4, 6, &devBounds);
// to ensure that stashing the drawState ptr is valid
GrAssert(this->drawState() == drawState);
}
void GrInOrderDrawBuffer::drawIndexedInstances(GrPrimitiveType type,
int instanceCount,
int verticesPerInstance,
int indicesPerInstance) {
if (!verticesPerInstance || !indicesPerInstance) {
return;
}
const GeometrySrcState& geomSrc = this->getGeomSrc();
// we only attempt to concat the case when reserved verts are used with
// an index buffer.
if (kReserved_GeometrySrcType == geomSrc.fVertexSrc &&
kBuffer_GeometrySrcType == geomSrc.fIndexSrc) {
if (this->needsNewClip()) {
this->recordClip();
}
if (this->needsNewState()) {
this->recordState();
}
Draw* draw = NULL;
// if the last draw used the same indices/vertices per shape then we
// may be able to append to it.
if (kDraw_Cmd == fCmds.back() &&
verticesPerInstance == fInstancedDrawTracker.fVerticesPerInstance &&
indicesPerInstance == fInstancedDrawTracker.fIndicesPerInstance) {
GrAssert(fDraws.count());
draw = &fDraws.back();
}
GeometryPoolState& poolState = fGeoPoolStateStack.back();
const GrVertexBuffer* vertexBuffer = poolState.fPoolVertexBuffer;
// Check whether the draw is compatible with this draw in order to
// append
if (NULL == draw ||
draw->fIndexBuffer != geomSrc.fIndexBuffer ||
draw->fPrimitiveType != type ||
draw->fVertexBuffer != vertexBuffer) {
draw = this->recordDraw();
draw->fPrimitiveType = type;
draw->fStartVertex = poolState.fPoolStartVertex;
draw->fStartIndex = 0;
draw->fVertexCount = 0;
draw->fIndexCount = 0;
draw->fVertexLayout = geomSrc.fVertexLayout;
draw->fVertexBuffer = vertexBuffer;
vertexBuffer->ref();
draw->fIndexBuffer = geomSrc.fIndexBuffer;
geomSrc.fIndexBuffer->ref();
} else {
GrAssert(!(draw->fIndexCount % indicesPerInstance));
GrAssert(!(draw->fVertexCount % verticesPerInstance));
GrAssert(poolState.fPoolStartVertex == draw->fStartVertex +
draw->fVertexCount);
}
// how many instances can be in a single draw
int maxInstancesPerDraw = this->indexCountInCurrentSource() /
indicesPerInstance;
if (!maxInstancesPerDraw) {
return;
}
// how many instances should be concat'ed onto draw
int instancesToConcat = maxInstancesPerDraw - draw->fVertexCount /
verticesPerInstance;
if (maxInstancesPerDraw > instanceCount) {
maxInstancesPerDraw = instanceCount;
if (instancesToConcat > instanceCount) {
instancesToConcat = instanceCount;
}
}
// update the amount of reserved data actually referenced in draws
size_t vertexBytes = instanceCount * verticesPerInstance *
GrDrawState::VertexSize(draw->fVertexLayout);
poolState.fUsedPoolVertexBytes =
GrMax(poolState.fUsedPoolVertexBytes, vertexBytes);
while (instanceCount) {
if (!instancesToConcat) {
int startVertex = draw->fStartVertex + draw->fVertexCount;
draw = this->recordDraw();
draw->fPrimitiveType = type;
draw->fStartVertex = startVertex;
draw->fStartIndex = 0;
draw->fVertexCount = 0;
draw->fIndexCount = 0;
draw->fVertexLayout = geomSrc.fVertexLayout;
draw->fVertexBuffer = vertexBuffer;
vertexBuffer->ref();
draw->fIndexBuffer = geomSrc.fIndexBuffer;
geomSrc.fIndexBuffer->ref();
instancesToConcat = maxInstancesPerDraw;
}
draw->fVertexCount += instancesToConcat * verticesPerInstance;
draw->fIndexCount += instancesToConcat * indicesPerInstance;
instanceCount -= instancesToConcat;
instancesToConcat = 0;
}
// update draw tracking for next draw
fCurrQuad = 0;
fInstancedDrawTracker.fVerticesPerInstance = verticesPerInstance;
fInstancedDrawTracker.fIndicesPerInstance = indicesPerInstance;
} else {
this->INHERITED::drawIndexedInstances(type,
instanceCount,
verticesPerInstance,
indicesPerInstance);
}
}
bool GrInOrderDrawBuffer::flushTo(GrDrawTarget* target) {
GrAssert(kReserved_GeometrySrcType != this->getGeomSrc().fVertexSrc);
GrAssert(kReserved_GeometrySrcType != this->getGeomSrc().fIndexSrc);
GrAssert(NULL != target);
GrAssert(target != this); // not considered and why?
int numCmds = fCmds.count();
if (0 == numCmds) {
return false;
}
fVertexPool.unlock();
fIndexPool.unlock();
GrDrawTarget::AutoClipRestore acr(target);
AutoGeometryPush agp(target);
GrDrawState playbackState;
GrDrawState* prevDrawState = target->drawState();
prevDrawState->ref();
target->setDrawState(&playbackState);
GrClipData clipData;
int currState = 0;
int currClip = 0;
int currClear = 0;
int currDraw = 0;
int currStencilPath = 0;
for (int c = 0; c < numCmds; ++c) {
switch (fCmds[c]) {
case kDraw_Cmd: {
const Draw& draw = fDraws[currDraw];
target->setVertexSourceToBuffer(draw.fVertexLayout, draw.fVertexBuffer);
if (draw.fIndexCount) {
target->setIndexSourceToBuffer(draw.fIndexBuffer);
}
if (draw.fIndexCount) {
target->drawIndexed(draw.fPrimitiveType,
draw.fStartVertex,
draw.fStartIndex,
draw.fVertexCount,
draw.fIndexCount);
} else {
target->drawNonIndexed(draw.fPrimitiveType,
draw.fStartVertex,
draw.fVertexCount);
}
++currDraw;
break;
}
case kStencilPath_Cmd: {
const StencilPath& sp = fStencilPaths[currStencilPath];
target->stencilPath(sp.fPath.get(), sp.fStroke, sp.fFill);
++currStencilPath;
break;
}
case kSetState_Cmd:
fStates[currState].restoreTo(&playbackState);
++currState;
break;
case kSetClip_Cmd:
clipData.fClipStack = &fClips[currClip];
clipData.fOrigin = fClipOrigins[currClip];
target->setClip(&clipData);
++currClip;
break;
case kClear_Cmd:
target->clear(&fClears[currClear].fRect,
fClears[currClear].fColor,
fClears[currClear].fRenderTarget);
++currClear;
break;
}
}
// we should have consumed all the states, clips, etc.
GrAssert(fStates.count() == currState);
GrAssert(fClips.count() == currClip);
GrAssert(fClipOrigins.count() == currClip);
GrAssert(fClears.count() == currClear);
GrAssert(fDraws.count() == currDraw);
target->setDrawState(prevDrawState);
prevDrawState->unref();
this->reset();
return true;
}
bool GrInOrderDrawBuffer::needsNewState() const {
// we should have recorded a default state in reset()
GrAssert(!fStates.empty());
return fStates.back() != this->getDrawState();
}
void GrMemoryPool::validate() {
#ifdef SK_DEBUG
BlockHeader* block = fHead;
BlockHeader* prev = NULL;
GrAssert(block);
int allocCount = 0;
do {
allocCount += block->fLiveCount;
GrAssert(prev == block->fPrev);
if (NULL != prev) {
GrAssert(prev->fNext == block);
}
intptr_t b = reinterpret_cast<intptr_t>(block);
size_t ptrOffset = block->fCurrPtr - b;
size_t totalSize = ptrOffset + block->fFreeSize;
size_t userSize = totalSize - kHeaderSize;
intptr_t userStart = b + kHeaderSize;
GrAssert(!(b % kAlignment));
GrAssert(!(totalSize % kAlignment));
GrAssert(!(userSize % kAlignment));
GrAssert(!(block->fCurrPtr % kAlignment));
if (fHead != block) {
GrAssert(block->fLiveCount);
GrAssert(userSize >= fMinAllocSize);
} else {
GrAssert(userSize == fPreallocSize);
}
if (!block->fLiveCount) {
GrAssert(ptrOffset == kHeaderSize);
GrAssert(userStart == block->fCurrPtr);
} else {
GrAssert(block == *reinterpret_cast<BlockHeader**>(userStart));
}
prev = block;
} while ((block = block->fNext));
GrAssert(allocCount == fAllocationCnt);
GrAssert(prev == fTail);
#endif
}
const char* GrGLSLVectorNonhomogCoords(int count) {
static const char* NONHOMOGS[] = {"ERROR", "", ".x", ".xy", ".xyz"};
GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(NONHOMOGS));
return NONHOMOGS[count];
}
void GrDrawTarget::setSamplerState(int stage, const GrSamplerState& state) {
GrAssert(stage >= 0 && stage < kNumStages);
fCurrDrawState.fSamplerStates[stage] = state;
}
bool GrInOrderDrawBuffer::flush() {
GrAssert(kReserved_GeometrySrcType != this->getGeomSrc().fVertexSrc);
GrAssert(kReserved_GeometrySrcType != this->getGeomSrc().fIndexSrc);
int numCmds = fCmds.count();
if (0 == numCmds) {
return false;
}
GrAssert(!fFlushing);
GrAutoTRestore<bool> flushRestore(&fFlushing);
fFlushing = true;
fVertexPool.unlock();
fIndexPool.unlock();
GrDrawTarget::AutoClipRestore acr(fDstGpu);
AutoGeometryAndStatePush agasp(fDstGpu, kPreserve_ASRInit);
GrDrawState playbackState;
GrDrawState* prevDrawState = fDstGpu->drawState();
prevDrawState->ref();
fDstGpu->setDrawState(&playbackState);
GrClipData clipData;
int currState = 0;
int currClip = 0;
int currClear = 0;
int currDraw = 0;
int currStencilPath = 0;
int currCopySurface = 0;
for (int c = 0; c < numCmds; ++c) {
switch (fCmds[c]) {
case kDraw_Cmd: {
const DrawRecord& draw = fDraws[currDraw];
fDstGpu->setVertexSourceToBuffer(draw.fVertexBuffer);
if (draw.isIndexed()) {
fDstGpu->setIndexSourceToBuffer(draw.fIndexBuffer);
}
fDstGpu->executeDraw(draw);
++currDraw;
break;
}
case kStencilPath_Cmd: {
const StencilPath& sp = fStencilPaths[currStencilPath];
fDstGpu->stencilPath(sp.fPath.get(), sp.fStroke, sp.fFill);
++currStencilPath;
break;
}
case kSetState_Cmd:
fStates[currState].restoreTo(&playbackState);
++currState;
break;
case kSetClip_Cmd:
clipData.fClipStack = &fClips[currClip];
clipData.fOrigin = fClipOrigins[currClip];
fDstGpu->setClip(&clipData);
++currClip;
break;
case kClear_Cmd:
fDstGpu->clear(&fClears[currClear].fRect,
fClears[currClear].fColor,
fClears[currClear].fRenderTarget);
++currClear;
break;
case kCopySurface_Cmd:
fDstGpu->copySurface(fCopySurfaces[currCopySurface].fDst.get(),
fCopySurfaces[currCopySurface].fSrc.get(),
fCopySurfaces[currCopySurface].fSrcRect,
fCopySurfaces[currCopySurface].fDstPoint);
++currCopySurface;
break;
}
}
// we should have consumed all the states, clips, etc.
GrAssert(fStates.count() == currState);
GrAssert(fClips.count() == currClip);
GrAssert(fClipOrigins.count() == currClip);
GrAssert(fClears.count() == currClear);
GrAssert(fDraws.count() == currDraw);
GrAssert(fCopySurfaces.count() == currCopySurface);
fDstGpu->setDrawState(prevDrawState);
prevDrawState->unref();
this->reset();
return true;
}
GrDrawTarget::BlendOptFlags
GrDrawTarget::getBlendOpts(bool forceCoverage,
GrBlendCoeff* srcCoeff,
GrBlendCoeff* dstCoeff) const {
const GrVertexLayout& layout = this->getGeomSrc().fVertexLayout;
GrBlendCoeff bogusSrcCoeff, bogusDstCoeff;
if (NULL == srcCoeff) {
srcCoeff = &bogusSrcCoeff;
}
*srcCoeff = fCurrDrawState.fSrcBlend;
if (NULL == dstCoeff) {
dstCoeff = &bogusDstCoeff;
}
*dstCoeff = fCurrDrawState.fDstBlend;
// We don't ever expect source coeffecients to reference the source
GrAssert(kSA_BlendCoeff != *srcCoeff &&
kISA_BlendCoeff != *srcCoeff &&
kSC_BlendCoeff != *srcCoeff &&
kISC_BlendCoeff != *srcCoeff);
// same for dst
GrAssert(kDA_BlendCoeff != *dstCoeff &&
kIDA_BlendCoeff != *dstCoeff &&
kDC_BlendCoeff != *dstCoeff &&
kIDC_BlendCoeff != *dstCoeff);
if (SkToBool(kNoColorWrites_StateBit & fCurrDrawState.fFlagBits)) {
*srcCoeff = kZero_BlendCoeff;
*dstCoeff = kOne_BlendCoeff;
}
bool srcAIsOne = this->srcAlphaWillBeOne();
bool dstCoeffIsOne = kOne_BlendCoeff == *dstCoeff ||
(kSA_BlendCoeff == *dstCoeff && srcAIsOne);
bool dstCoeffIsZero = kZero_BlendCoeff == *dstCoeff ||
(kISA_BlendCoeff == *dstCoeff && srcAIsOne);
// When coeffs are (0,1) there is no reason to draw at all, unless
// stenciling is enabled. Having color writes disabled is effectively
// (0,1).
if ((kZero_BlendCoeff == *srcCoeff && dstCoeffIsOne)) {
if (fCurrDrawState.fStencilSettings.doesWrite()) {
if (fCaps.fShaderSupport) {
return kDisableBlend_BlendOptFlag |
kEmitTransBlack_BlendOptFlag;
} else {
return kDisableBlend_BlendOptFlag;
}
} else {
return kSkipDraw_BlendOptFlag;
}
}
// check for coverage due to edge aa or coverage texture stage
bool hasCoverage = forceCoverage ||
fCurrDrawState.fEdgeAANumEdges > 0 ||
(layout & kCoverage_VertexLayoutBit) ||
(layout & kEdge_VertexLayoutBit);
for (int s = fCurrDrawState.fFirstCoverageStage;
!hasCoverage && s < kNumStages;
++s) {
if (StageWillBeUsed(s, layout, fCurrDrawState)) {
hasCoverage = true;
}
}
// if we don't have coverage we can check whether the dst
// has to read at all. If not, we'll disable blending.
if (!hasCoverage) {
if (dstCoeffIsZero) {
if (kOne_BlendCoeff == *srcCoeff) {
// if there is no coverage and coeffs are (1,0) then we
// won't need to read the dst at all, it gets replaced by src
return kDisableBlend_BlendOptFlag;
} else if (kZero_BlendCoeff == *srcCoeff &&
fCaps.fShaderSupport) {
// if the op is "clear" then we don't need to emit a color
// or blend, just write transparent black into the dst.
*srcCoeff = kOne_BlendCoeff;
*dstCoeff = kZero_BlendCoeff;
return kDisableBlend_BlendOptFlag |
kEmitTransBlack_BlendOptFlag;
}
}
} else {
// check whether coverage can be safely rolled into alpha
// of if we can skip color computation and just emit coverage
if (this->canTweakAlphaForCoverage()) {
return kCoverageAsAlpha_BlendOptFlag;
}
// We haven't implemented support for these optimizations in the
// fixed pipe (which is on its deathbed)
if (fCaps.fShaderSupport) {
if (dstCoeffIsZero) {
if (kZero_BlendCoeff == *srcCoeff) {
// the source color is not included in the blend
// the dst coeff is effectively zero so blend works out to:
// (c)(0)D + (1-c)D = (1-c)D.
*dstCoeff = kISA_BlendCoeff;
return kEmitCoverage_BlendOptFlag;
} else if (srcAIsOne) {
// the dst coeff is effectively zero so blend works out to:
// cS + (c)(0)D + (1-c)D = cS + (1-c)D.
// If Sa is 1 then we can replace Sa with c
// and set dst coeff to 1-Sa.
*dstCoeff = kISA_BlendCoeff;
return kCoverageAsAlpha_BlendOptFlag;
}
} else if (dstCoeffIsOne) {
// the dst coeff is effectively one so blend works out to:
// cS + (c)(1)D + (1-c)D = cS + D.
*dstCoeff = kOne_BlendCoeff;
return kCoverageAsAlpha_BlendOptFlag;
}
}
}
return kNone_BlendOpt;
}
void GrDrawTarget::setEdgeAAData(const Edge* edges, int numEdges) {
GrAssert(numEdges <= kMaxEdges);
memcpy(fCurrDrawState.fEdgeAAEdges, edges, numEdges * sizeof(Edge));
fCurrDrawState.fEdgeAANumEdges = numEdges;
}
void GrGpuGLShaders::buildProgram(GrPrimitiveType type,
BlendOptFlags blendOpts,
GrBlendCoeff dstCoeff) {
ProgramDesc& desc = fCurrentProgram.fProgramDesc;
const GrDrawState& drawState = this->getDrawState();
// This should already have been caught
GrAssert(!(kSkipDraw_BlendOptFlag & blendOpts));
bool skipCoverage = SkToBool(blendOpts & kEmitTransBlack_BlendOptFlag);
bool skipColor = SkToBool(blendOpts & (kEmitTransBlack_BlendOptFlag |
kEmitCoverage_BlendOptFlag));
// The descriptor is used as a cache key. Thus when a field of the
// descriptor will not affect program generation (because of the vertex
// layout in use or other descriptor field settings) it should be set
// to a canonical value to avoid duplicate programs with different keys.
// Must initialize all fields or cache will have false negatives!
desc.fVertexLayout = this->getGeomSrc().fVertexLayout;
desc.fEmitsPointSize = kPoints_PrimitiveType == type;
bool requiresAttributeColors =
!skipColor && SkToBool(desc.fVertexLayout & kColor_VertexLayoutBit);
// fColorInput records how colors are specified for the program. Strip
// the bit from the layout to avoid false negatives when searching for an
// existing program in the cache.
desc.fVertexLayout &= ~(kColor_VertexLayoutBit);
desc.fColorFilterXfermode = skipColor ?
SkXfermode::kDst_Mode :
drawState.getColorFilterMode();
// no reason to do edge aa or look at per-vertex coverage if coverage is
// ignored
if (skipCoverage) {
desc.fVertexLayout &= ~(kEdge_VertexLayoutBit |
kCoverage_VertexLayoutBit);
}
bool colorIsTransBlack = SkToBool(blendOpts & kEmitTransBlack_BlendOptFlag);
bool colorIsSolidWhite = (blendOpts & kEmitCoverage_BlendOptFlag) ||
(!requiresAttributeColors &&
0xffffffff == drawState.getColor());
if (GR_AGGRESSIVE_SHADER_OPTS && colorIsTransBlack) {
desc.fColorInput = ProgramDesc::kTransBlack_ColorInput;
} else if (GR_AGGRESSIVE_SHADER_OPTS && colorIsSolidWhite) {
desc.fColorInput = ProgramDesc::kSolidWhite_ColorInput;
} else if (GR_GL_NO_CONSTANT_ATTRIBUTES && !requiresAttributeColors) {
desc.fColorInput = ProgramDesc::kUniform_ColorInput;
} else {
desc.fColorInput = ProgramDesc::kAttribute_ColorInput;
}
desc.fEdgeAANumEdges = skipCoverage ? 0 : drawState.getNumAAEdges();
desc.fEdgeAAConcave = desc.fEdgeAANumEdges > 0 &&
drawState.isConcaveEdgeAAState();
int lastEnabledStage = -1;
if (!skipCoverage && (desc.fVertexLayout &
GrDrawTarget::kEdge_VertexLayoutBit)) {
desc.fVertexEdgeType = drawState.getVertexEdgeType();
} else {
// use canonical value when not set to avoid cache misses
desc.fVertexEdgeType = GrDrawState::kHairLine_EdgeType;
}
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
StageDesc& stage = desc.fStages[s];
stage.fOptFlags = 0;
stage.setEnabled(this->isStageEnabled(s));
bool skip = s < drawState.getFirstCoverageStage() ? skipColor :
skipCoverage;
if (!skip && stage.isEnabled()) {
lastEnabledStage = s;
const GrGLTexture* texture =
static_cast<const GrGLTexture*>(drawState.getTexture(s));
GrAssert(NULL != texture);
const GrSamplerState& sampler = drawState.getSampler(s);
// we matrix to invert when orientation is TopDown, so make sure
// we aren't in that case before flagging as identity.
if (TextureMatrixIsIdentity(texture, sampler)) {
stage.fOptFlags |= StageDesc::kIdentityMatrix_OptFlagBit;
} else if (!sampler.getMatrix().hasPerspective()) {
stage.fOptFlags |= StageDesc::kNoPerspective_OptFlagBit;
}
switch (sampler.getSampleMode()) {
case GrSamplerState::kNormal_SampleMode:
stage.fCoordMapping = StageDesc::kIdentity_CoordMapping;
break;
case GrSamplerState::kRadial_SampleMode:
stage.fCoordMapping = StageDesc::kRadialGradient_CoordMapping;
break;
case GrSamplerState::kRadial2_SampleMode:
if (sampler.radial2IsDegenerate()) {
stage.fCoordMapping =
StageDesc::kRadial2GradientDegenerate_CoordMapping;
} else {
stage.fCoordMapping =
StageDesc::kRadial2Gradient_CoordMapping;
}
break;
case GrSamplerState::kSweep_SampleMode:
stage.fCoordMapping = StageDesc::kSweepGradient_CoordMapping;
break;
default:
GrCrash("Unexpected sample mode!");
break;
}
switch (sampler.getFilter()) {
// these both can use a regular texture2D()
case GrSamplerState::kNearest_Filter:
case GrSamplerState::kBilinear_Filter:
stage.fFetchMode = StageDesc::kSingle_FetchMode;
break;
// performs 4 texture2D()s
case GrSamplerState::k4x4Downsample_Filter:
stage.fFetchMode = StageDesc::k2x2_FetchMode;
break;
// performs fKernelWidth texture2D()s
case GrSamplerState::kConvolution_Filter:
stage.fFetchMode = StageDesc::kConvolution_FetchMode;
break;
default:
GrCrash("Unexpected filter!");
break;
}
if (sampler.hasTextureDomain()) {
GrAssert(GrSamplerState::kClamp_WrapMode ==
sampler.getWrapX() &&
GrSamplerState::kClamp_WrapMode ==
sampler.getWrapY());
stage.fOptFlags |= StageDesc::kCustomTextureDomain_OptFlagBit;
}
stage.fInConfigFlags = 0;
if (!this->glCaps().fTextureSwizzleSupport) {
if (GrPixelConfigIsAlphaOnly(texture->config())) {
// if we don't have texture swizzle support then
// the shader must do an alpha smear after reading
// the texture
stage.fInConfigFlags |= StageDesc::kSmearAlpha_InConfigFlag;
} else if (sampler.swapsRAndB()) {
stage.fInConfigFlags |= StageDesc::kSwapRAndB_InConfigFlag;
}
}
if (GrPixelConfigIsUnpremultiplied(texture->config())) {
stage.fInConfigFlags |= StageDesc::kMulRGBByAlpha_InConfigFlag;
}
if (sampler.getFilter() == GrSamplerState::kConvolution_Filter) {
stage.fKernelWidth = sampler.getKernelWidth();
} else {
stage.fKernelWidth = 0;
}
} else {
stage.fOptFlags = 0;
stage.fCoordMapping = (StageDesc::CoordMapping) 0;
stage.fInConfigFlags = 0;
stage.fFetchMode = (StageDesc::FetchMode) 0;
stage.fKernelWidth = 0;
}
}
if (GrPixelConfigIsUnpremultiplied(drawState.getRenderTarget()->config())) {
desc.fOutputPM = ProgramDesc::kNo_OutputPM;
} else {
desc.fOutputPM = ProgramDesc::kYes_OutputPM;
}
desc.fDualSrcOutput = ProgramDesc::kNone_DualSrcOutput;
// currently the experimental GS will only work with triangle prims
// (and it doesn't do anything other than pass through values from
// the VS to the FS anyway).
#if 0 && GR_GL_EXPERIMENTAL_GS
desc.fExperimentalGS = this->getCaps().fGeometryShaderSupport;
#endif
// we want to avoid generating programs with different "first cov stage"
// values when they would compute the same result.
// We set field in the desc to kNumStages when either there are no
// coverage stages or the distinction between coverage and color is
// immaterial.
int firstCoverageStage = GrDrawState::kNumStages;
desc.fFirstCoverageStage = GrDrawState::kNumStages;
bool hasCoverage = drawState.getFirstCoverageStage() <= lastEnabledStage;
if (hasCoverage) {
firstCoverageStage = drawState.getFirstCoverageStage();
}
// other coverage inputs
if (!hasCoverage) {
hasCoverage =
desc.fEdgeAANumEdges ||
(desc.fVertexLayout & GrDrawTarget::kCoverage_VertexLayoutBit) ||
(desc.fVertexLayout & GrDrawTarget::kEdge_VertexLayoutBit);
}
if (hasCoverage) {
// color filter is applied between color/coverage computation
if (SkXfermode::kDst_Mode != desc.fColorFilterXfermode) {
desc.fFirstCoverageStage = firstCoverageStage;
}
if (this->getCaps().fDualSourceBlendingSupport &&
!(blendOpts & (kEmitCoverage_BlendOptFlag |
kCoverageAsAlpha_BlendOptFlag))) {
if (kZero_BlendCoeff == dstCoeff) {
// write the coverage value to second color
desc.fDualSrcOutput = ProgramDesc::kCoverage_DualSrcOutput;
desc.fFirstCoverageStage = firstCoverageStage;
} else if (kSA_BlendCoeff == dstCoeff) {
// SA dst coeff becomes 1-(1-SA)*coverage when dst is partially
// cover
desc.fDualSrcOutput = ProgramDesc::kCoverageISA_DualSrcOutput;
desc.fFirstCoverageStage = firstCoverageStage;
} else if (kSC_BlendCoeff == dstCoeff) {
// SA dst coeff becomes 1-(1-SA)*coverage when dst is partially
// cover
desc.fDualSrcOutput = ProgramDesc::kCoverageISC_DualSrcOutput;
desc.fFirstCoverageStage = firstCoverageStage;
}
}
}
}
bool GrDrawTarget::VertexUsesStage(int stage, GrVertexLayout vertexLayout) {
GrAssert(stage < kNumStages);
GrAssert(check_layout(vertexLayout));
return !!(stage_mask(stage) & vertexLayout);
}
void GrGpu::removeResource(GrResource* resource) {
GrAssert(NULL != resource);
GrAssert(this == resource->getGpu());
fResourceList.remove(resource);
}
bool GrDrawTarget::VertexUsesTexCoordIdx(int coordIndex,
GrVertexLayout vertexLayout) {
GrAssert(coordIndex < kMaxTexCoords);
GrAssert(check_layout(vertexLayout));
return !!(tex_coord_idx_mask(coordIndex) & vertexLayout);
}
void GrGpu::resolveRenderTarget(GrRenderTarget* target) {
GrAssert(target);
this->handleDirtyContext();
this->onResolveRenderTarget(target);
}
void GrDrawTarget::VertexLayoutUnitTest() {
// not necessarily exhaustive
static bool run;
if (!run) {
run = true;
for (int s = 0; s < kNumStages; ++s) {
GrAssert(!VertexUsesStage(s, 0));
GrAssert(-1 == VertexStageCoordOffset(s, 0));
GrVertexLayout stageMask = 0;
for (int t = 0; t < kMaxTexCoords; ++t) {
stageMask |= StageTexCoordVertexLayoutBit(s,t);
}
GrAssert(1 == kMaxTexCoords || !check_layout(stageMask));
GrAssert(stage_tex_coord_mask(s) == stageMask);
stageMask |= StagePosAsTexCoordVertexLayoutBit(s);
GrAssert(stage_mask(s) == stageMask);
GrAssert(!check_layout(stageMask));
}
for (int t = 0; t < kMaxTexCoords; ++t) {
GrVertexLayout tcMask = 0;
GrAssert(!VertexUsesTexCoordIdx(t, 0));
for (int s = 0; s < kNumStages; ++s) {
tcMask |= StageTexCoordVertexLayoutBit(s,t);
GrAssert(VertexUsesStage(s, tcMask));
GrAssert(sizeof(GrPoint) == VertexStageCoordOffset(s, tcMask));
GrAssert(VertexUsesTexCoordIdx(t, tcMask));
GrAssert(2*sizeof(GrPoint) == VertexSize(tcMask));
GrAssert(t == VertexTexCoordsForStage(s, tcMask));
for (int s2 = s + 1; s2 < kNumStages; ++s2) {
GrAssert(-1 == VertexStageCoordOffset(s2, tcMask));
GrAssert(!VertexUsesStage(s2, tcMask));
GrAssert(-1 == VertexTexCoordsForStage(s2, tcMask));
#if GR_DEBUG
GrVertexLayout posAsTex = tcMask | StagePosAsTexCoordVertexLayoutBit(s2);
#endif
GrAssert(0 == VertexStageCoordOffset(s2, posAsTex));
GrAssert(VertexUsesStage(s2, posAsTex));
GrAssert(2*sizeof(GrPoint) == VertexSize(posAsTex));
GrAssert(-1 == VertexTexCoordsForStage(s2, posAsTex));
GrAssert(-1 == VertexEdgeOffset(posAsTex));
}
GrAssert(-1 == VertexEdgeOffset(tcMask));
GrAssert(-1 == VertexColorOffset(tcMask));
GrAssert(-1 == VertexCoverageOffset(tcMask));
#if GR_DEBUG
GrVertexLayout withColor = tcMask | kColor_VertexLayoutBit;
#endif
GrAssert(-1 == VertexCoverageOffset(withColor));
GrAssert(2*sizeof(GrPoint) == VertexColorOffset(withColor));
GrAssert(2*sizeof(GrPoint) + sizeof(GrColor) == VertexSize(withColor));
#if GR_DEBUG
GrVertexLayout withEdge = tcMask | kEdge_VertexLayoutBit;
#endif
GrAssert(-1 == VertexColorOffset(withEdge));
GrAssert(2*sizeof(GrPoint) == VertexEdgeOffset(withEdge));
GrAssert(4*sizeof(GrPoint) == VertexSize(withEdge));
#if GR_DEBUG
GrVertexLayout withColorAndEdge = withColor | kEdge_VertexLayoutBit;
#endif
GrAssert(2*sizeof(GrPoint) == VertexColorOffset(withColorAndEdge));
GrAssert(2*sizeof(GrPoint) + sizeof(GrColor) == VertexEdgeOffset(withColorAndEdge));
GrAssert(4*sizeof(GrPoint) + sizeof(GrColor) == VertexSize(withColorAndEdge));
#if GR_DEBUG
GrVertexLayout withCoverage = tcMask | kCoverage_VertexLayoutBit;
#endif
GrAssert(-1 == VertexColorOffset(withCoverage));
GrAssert(2*sizeof(GrPoint) == VertexCoverageOffset(withCoverage));
GrAssert(2*sizeof(GrPoint) + sizeof(GrColor) == VertexSize(withCoverage));
#if GR_DEBUG
GrVertexLayout withCoverageAndColor = tcMask | kCoverage_VertexLayoutBit |
kColor_VertexLayoutBit;
#endif
GrAssert(2*sizeof(GrPoint) == VertexColorOffset(withCoverageAndColor));
GrAssert(2*sizeof(GrPoint) + sizeof(GrColor) == VertexCoverageOffset(withCoverageAndColor));
GrAssert(2*sizeof(GrPoint) + 2 * sizeof(GrColor) == VertexSize(withCoverageAndColor));
}
GrAssert(tex_coord_idx_mask(t) == tcMask);
GrAssert(check_layout(tcMask));
int stageOffsets[kNumStages];
int colorOffset;
int edgeOffset;
int coverageOffset;
int size;
size = VertexSizeAndOffsetsByStage(tcMask, stageOffsets, &colorOffset,
&coverageOffset, &edgeOffset);
GrAssert(2*sizeof(GrPoint) == size);
GrAssert(-1 == colorOffset);
GrAssert(-1 == coverageOffset);
GrAssert(-1 == edgeOffset);
for (int s = 0; s < kNumStages; ++s) {
GrAssert(VertexUsesStage(s, tcMask));
GrAssert(sizeof(GrPoint) == stageOffsets[s]);
GrAssert(sizeof(GrPoint) == VertexStageCoordOffset(s, tcMask));
}
}
}
}
void GrGpu::finalizeReservedVertices() {
GrAssert(NULL != fVertexPool);
fVertexPool->unlock();
}
void GrDrawTarget::setTexture(int stage, GrTexture* tex) {
GrAssert(stage >= 0 && stage < kNumStages);
fCurrDrawState.fTextures[stage] = tex;
}
void GrDefaultPathRenderer::drawPathHelper(GrDrawTarget* target,
GrDrawTarget::StageBitfield stages,
GrPathIter* path,
GrPathFill fill,
const GrPoint* translate,
bool stencilOnly) {
GrDrawTarget::AutoStateRestore asr(target);
bool colorWritesWereDisabled = target->isColorWriteDisabled();
// face culling doesn't make sense here
GrAssert(GrDrawTarget::kBoth_DrawFace == target->getDrawFace());
GrMatrix viewM = target->getViewMatrix();
// In order to tesselate the path we get a bound on how much the matrix can
// stretch when mapping to screen coordinates.
GrScalar stretch = viewM.getMaxStretch();
bool useStretch = stretch > 0;
GrScalar tol = gTolerance;
if (!useStretch) {
// TODO: deal with perspective in some better way.
tol /= 10;
} else {
GrScalar sinv = GR_Scalar1 / stretch;
tol = GrMul(tol, sinv);
}
GrScalar tolSqd = GrMul(tol, tol);
path->rewind();
int subpathCnt;
int maxPts = worst_case_point_count(path,
&subpathCnt,
tol);
GrVertexLayout layout = 0;
for (int s = 0; s < GrDrawTarget::kNumStages; ++s) {
if ((1 << s) & stages) {
layout |= GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(s);
}
}
// add 4 to hold the bounding rect
GrDrawTarget::AutoReleaseGeometry arg(target, layout, maxPts + 4, 0);
GrPoint* base = (GrPoint*) arg.vertices();
GrPoint* vert = base;
GrPoint* subpathBase = base;
GrAutoSTMalloc<8, uint16_t> subpathVertCount(subpathCnt);
path->rewind();
// TODO: use primitve restart if available rather than multiple draws
GrPrimitiveType type;
int passCount = 0;
const GrStencilSettings* passes[3];
GrDrawTarget::DrawFace drawFace[3];
bool reverse = false;
bool lastPassIsBounds;
if (kHairLine_PathFill == fill) {
type = kLineStrip_PrimitiveType;
passCount = 1;
if (stencilOnly) {
passes[0] = &gDirectToStencil;
} else {
passes[0] = NULL;
}
lastPassIsBounds = false;
drawFace[0] = GrDrawTarget::kBoth_DrawFace;
} else {
type = kTriangleFan_PrimitiveType;
if (single_pass_path(*target, *path, fill)) {
passCount = 1;
if (stencilOnly) {
passes[0] = &gDirectToStencil;
} else {
passes[0] = NULL;
}
drawFace[0] = GrDrawTarget::kBoth_DrawFace;
lastPassIsBounds = false;
} else {
switch (fill) {
case kInverseEvenOdd_PathFill:
reverse = true;
// fallthrough
case kEvenOdd_PathFill:
passes[0] = &gEOStencilPass;
if (stencilOnly) {
passCount = 1;
lastPassIsBounds = false;
} else {
passCount = 2;
lastPassIsBounds = true;
if (reverse) {
passes[1] = &gInvEOColorPass;
} else {
passes[1] = &gEOColorPass;
}
}
drawFace[0] = drawFace[1] = GrDrawTarget::kBoth_DrawFace;
break;
case kInverseWinding_PathFill:
reverse = true;
// fallthrough
case kWinding_PathFill:
if (fSeparateStencil) {
if (fStencilWrapOps) {
passes[0] = &gWindStencilSeparateWithWrap;
} else {
passes[0] = &gWindStencilSeparateNoWrap;
}
passCount = 2;
drawFace[0] = GrDrawTarget::kBoth_DrawFace;
} else {
if (fStencilWrapOps) {
passes[0] = &gWindSingleStencilWithWrapInc;
passes[1] = &gWindSingleStencilWithWrapDec;
} else {
passes[0] = &gWindSingleStencilNoWrapInc;
passes[1] = &gWindSingleStencilNoWrapDec;
}
// which is cw and which is ccw is arbitrary.
drawFace[0] = GrDrawTarget::kCW_DrawFace;
drawFace[1] = GrDrawTarget::kCCW_DrawFace;
passCount = 3;
}
if (stencilOnly) {
lastPassIsBounds = false;
--passCount;
} else {
lastPassIsBounds = true;
drawFace[passCount-1] = GrDrawTarget::kBoth_DrawFace;
if (reverse) {
passes[passCount-1] = &gInvWindColorPass;
} else {
passes[passCount-1] = &gWindColorPass;
}
}
break;
default:
GrAssert(!"Unknown path fill!");
return;
}
}
}
GrPoint pts[4];
bool first = true;
int subpath = 0;
for (;;) {
GrPathCmd cmd = path->next(pts);
switch (cmd) {
case kMove_PathCmd:
if (!first) {
subpathVertCount[subpath] = vert-subpathBase;
subpathBase = vert;
++subpath;
}
*vert = pts[0];
vert++;
break;
case kLine_PathCmd:
*vert = pts[1];
vert++;
break;
case kQuadratic_PathCmd: {
generate_quadratic_points(pts[0], pts[1], pts[2],
tolSqd, &vert,
quadratic_point_count(pts, tol));
break;
}
case kCubic_PathCmd: {
generate_cubic_points(pts[0], pts[1], pts[2], pts[3],
tolSqd, &vert,
cubic_point_count(pts, tol));
break;
}
case kClose_PathCmd:
break;
case kEnd_PathCmd:
subpathVertCount[subpath] = vert-subpathBase;
++subpath; // this could be only in debug
goto FINISHED;
}
first = false;
}
FINISHED:
GrAssert(subpath == subpathCnt);
GrAssert((vert - base) <= maxPts);
if (translate) {
int count = vert - base;
for (int i = 0; i < count; i++) {
base[i].offset(translate->fX, translate->fY);
}
}
// if we're stenciling we will follow with a pass that draws
// a bounding rect to set the color. We're stenciling when
// passCount > 1.
const int& boundVertexStart = maxPts;
GrPoint* boundsVerts = base + boundVertexStart;
if (lastPassIsBounds) {
GrRect bounds;
if (reverse) {
GrAssert(NULL != target->getRenderTarget());
// draw over the whole world.
bounds.setLTRB(0, 0,
GrIntToScalar(target->getRenderTarget()->width()),
GrIntToScalar(target->getRenderTarget()->height()));
GrMatrix vmi;
if (target->getViewInverse(&vmi)) {
vmi.mapRect(&bounds);
}
} else {
bounds.setBounds((GrPoint*)base, vert - base);
}
boundsVerts[0].setRectFan(bounds.fLeft, bounds.fTop, bounds.fRight,
bounds.fBottom);
}
for (int p = 0; p < passCount; ++p) {
target->setDrawFace(drawFace[p]);
if (NULL != passes[p]) {
target->setStencil(*passes[p]);
}
if (lastPassIsBounds && (p == passCount-1)) {
if (!colorWritesWereDisabled) {
target->disableState(GrDrawTarget::kNoColorWrites_StateBit);
}
target->drawNonIndexed(kTriangleFan_PrimitiveType,
boundVertexStart, 4);
} else {
if (passCount > 1) {
target->enableState(GrDrawTarget::kNoColorWrites_StateBit);
}
int baseVertex = 0;
for (int sp = 0; sp < subpathCnt; ++sp) {
target->drawNonIndexed(type,
baseVertex,
subpathVertCount[sp]);
baseVertex += subpathVertCount[sp];
}
}
}
}
GrTexture* GrDrawTarget::getTexture(int stage) {
GrAssert(stage >= 0 && stage < kNumStages);
return fCurrDrawState.fTextures[stage];
}
bool GrGpuGL::flushGraphicsState(DrawType type) {
const GrDrawState& drawState = this->getDrawState();
// GrGpu::setupClipAndFlushState should have already checked this
// and bailed if not true.
GrAssert(NULL != drawState.getRenderTarget());
if (kStencilPath_DrawType != type) {
this->flushMiscFixedFunctionState();
GrBlendCoeff srcCoeff;
GrBlendCoeff dstCoeff;
BlendOptFlags blendOpts = this->getBlendOpts(false, &srcCoeff, &dstCoeff);
if (kSkipDraw_BlendOptFlag & blendOpts) {
return false;
}
const GrEffectStage* stages[GrDrawState::kNumStages];
for (int i = 0; i < GrDrawState::kNumStages; ++i) {
stages[i] = drawState.isStageEnabled(i) ? &drawState.getStage(i) : NULL;
}
GrGLProgram::Desc desc;
this->buildProgram(kDrawPoints_DrawType == type, blendOpts, dstCoeff, &desc);
fCurrentProgram.reset(fProgramCache->getProgram(desc, stages));
if (NULL == fCurrentProgram.get()) {
GrAssert(!"Failed to create program!");
return false;
}
fCurrentProgram.get()->ref();
if (fHWProgramID != fCurrentProgram->fProgramID) {
GL_CALL(UseProgram(fCurrentProgram->fProgramID));
fHWProgramID = fCurrentProgram->fProgramID;
}
fCurrentProgram->overrideBlend(&srcCoeff, &dstCoeff);
this->flushBlend(kDrawLines_DrawType == type, srcCoeff, dstCoeff);
GrColor color;
GrColor coverage;
if (blendOpts & kEmitTransBlack_BlendOptFlag) {
color = 0;
coverage = 0;
} else if (blendOpts & kEmitCoverage_BlendOptFlag) {
color = 0xffffffff;
coverage = drawState.getCoverage();
} else {
color = drawState.getColor();
coverage = drawState.getCoverage();
}
this->flushColor(color);
this->flushCoverage(coverage);
fCurrentProgram->setData(drawState);
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
if (this->isStageEnabled(s)) {
this->flushBoundTextureAndParams(s);
}
}
}
this->flushStencil(type);
this->flushViewMatrix(type);
this->flushScissor();
this->flushAAState(type);
GrIRect* devRect = NULL;
GrIRect devClipBounds;
if (drawState.isClipState()) {
fClip->getConservativeBounds(drawState.getRenderTarget(),
&devClipBounds);
devRect = &devClipBounds;
}
// This must come after textures are flushed because a texture may need
// to be msaa-resolved (which will modify bound FBO state).
this->flushRenderTarget(devRect);
return true;
}
void GrEffect::addVertexAttrib(GrSLType type) {
GrAssert(fVertexAttribTypes.count() < kMaxVertexAttribs);
fVertexAttribTypes.push_back(type);
}