GrBatchPrototype

src/gpu/GrInOrderDrawBuffer.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrInOrderDrawBuffer.h"
 
 #include "GrDefaultGeoProcFactory.h"
 #include "GrDrawTargetCaps.h"
 #include "GrGpu.h"
 #include "GrTemplates.h"
 #include "GrFontCache.h"
 #include "GrTexture.h"
 
 GrInOrderDrawBuffer::GrInOrderDrawBuffer(GrGpu* gpu,
                                          GrVertexBufferAllocPool* vertexPool,
                                          GrIndexBufferAllocPool* indexPool)
     : INHERITED(gpu, vertexPool, indexPool)
     , fCmdBuffer(kCmdBufferInitialSizeInBytes)
     , fPrevState(NULL)
-    , fDrawID(0) {
+    , fDrawID(0)
+    , fBatchBuffer(gpu, vertexPool, indexPool) {
 
     SkASSERT(vertexPool);
     SkASSERT(indexPool);
 
     fPathIndexBuffer.setReserve(kPathIdxBufferMinReserve);
     fPathTransformBuffer.setReserve(kPathXformBufferMinReserve);
 }
 
 GrInOrderDrawBuffer::~GrInOrderDrawBuffer() {
     this->reset();
@@ skipping 225 matching lines @@
             draw->fInfo.adjustInstanceCount(-instancesConcated);
         } else {
             return;
         }
     } else {
         draw = GrNEW_APPEND_TO_RECORDER(fCmdBuffer, Draw, (info));
     }
     this->recordTraceMarkersIfNecessary();
 }
 
+void GrInOrderDrawBuffer::onBatchDraw(GrBatch* batch,
+                                      const GrDrawState& ds,
+                                      GrPrimitiveType type,
+                                      const GrScissorState& scissorState,
+                                      const GrDeviceCoordTexture* dstCopy) {
+    if (!this->recordStateAndShouldDraw(batch, ds, GrGpu::PrimTypeToDrawType(type), scissorState,
+                                        dstCopy)) {
+        return;
+    }
+
+    // Check if there is a Batch Draw we can batch with
+    if (kBatchDraw != strip_trace_bit(fCmdBuffer.back().fType)) {
+        GrNEW_APPEND_TO_RECORDER(fCmdBuffer, BatchDraw, (batch));
+        return;
+    }
+
+    BatchDraw* draw = static_cast<BatchDraw*>(&fCmdBuffer.back());
+    if (draw->fBatch->combineIfPossible(batch)) {
+        return;
+    } else {
+        GrNEW_APPEND_TO_RECORDER(fCmdBuffer, BatchDraw, (batch));
+    }
+    this->recordTraceMarkersIfNecessary();
+}
+
 void GrInOrderDrawBuffer::onStencilPath(const GrDrawState& ds,
                                         const GrPathProcessor* pathProc,
                                         const GrPath* path,
                                         const GrScissorState& scissorState,
                                         const GrStencilSettings& stencilSettings) {
     StencilPath* sp = GrNEW_APPEND_TO_RECORDER(fCmdBuffer, StencilPath,
                                                (path, ds.getRenderTarget()));
     sp->fScissor = scissorState;
     sp->fUseHWAA = ds.isHWAntialias();
     sp->fViewMatrix = pathProc->viewMatrix();
@@ skipping 135 matching lines @@
 
 
     CmdBuffer::Iter iter(fCmdBuffer);
 
     int currCmdMarker = 0;
 
     // Updated every time we find a set state cmd to reflect the current state in the playback
     // stream.
     SetState* currentState = NULL;
 
+    // TODO to prevent flushing the batch buffer too much, we only flush when wasBatch && !isBatch
+    // In the long term we can delete this and just flush once at the end of all geometry generation
+    bool wasBatch = false;
+
     while (iter.next()) {
         GrGpuTraceMarker newMarker("", -1);
         SkString traceString;
         if (cmd_has_trace_marker(iter->fType)) {
             traceString = fGpuCmdMarkers[currCmdMarker].toString();
             newMarker.fMarker = traceString.c_str();
             this->getGpu()->addGpuTraceMarker(&newMarker);
             ++currCmdMarker;
         }
 
         if (kSetState_Cmd == strip_trace_bit(iter->fType)) {
             SetState* ss = reinterpret_cast<SetState*>(iter.get());
 
-            this->getGpu()->buildProgramDesc(&ss->fDesc, *ss->fPrimitiveProcessor, ss->fState,
-                                             ss->fState.descInfo(), ss->fState.drawType(),
-                                             ss->fBatchTracker);
-            currentState = ss;
+            // TODO sometimes we have a prim proc, othertimes we have a GrBatch.  Eventually we will
+            // only have GrBatch and we can delete this
+            if (ss->fPrimitiveProcessor) {
+                // TODO see note above, this gets deleted once everyone uses batch drawing
+                if (wasBatch) {
+                    wasBatch = false;
+                    fBatchBuffer.flush();
+                }
 
+                this->getGpu()->buildProgramDesc(&ss->fDesc, *ss->fPrimitiveProcessor, ss->fState,
+                                                 ss->fState.descInfo(), ss->fState.drawType(),
+                                                 ss->fBatchTracker);
+            } else {
+                wasBatch = true;
+            }
+                        currentState = ss;
         } else {
             iter->execute(this, currentState);
         }
 
         if (cmd_has_trace_marker(iter->fType)) {
             this->getGpu()->removeGpuTraceMarker(&newMarker);
         }
     }
 
+    // TODO see note above, one last catch
+    if (wasBatch) {
+        fBatchBuffer.flush();
+    }
+
     SkASSERT(fGpuCmdMarkers.count() == currCmdMarker);
     ++fDrawID;
 }
 
 void GrInOrderDrawBuffer::Draw::execute(GrInOrderDrawBuffer* buf, const SetState* state) {
     SkASSERT(state);
     DrawArgs args(state->fPrimitiveProcessor.get(), &state->fState, &state->fDesc,
                   &state->fBatchTracker);
     buf->getGpu()->draw(args, fInfo);
 }
@@ skipping 19 matching lines @@
 void GrInOrderDrawBuffer::DrawPaths::execute(GrInOrderDrawBuffer* buf, const SetState* state) {
     SkASSERT(state);
     DrawArgs args(state->fPrimitiveProcessor.get(), &state->fState, &state->fDesc,
                   &state->fBatchTracker);
     buf->getGpu()->drawPaths(args, this->pathRange(),
                             &buf->fPathIndexBuffer[fIndicesLocation], fIndexType,
                             &buf->fPathTransformBuffer[fTransformsLocation], fTransformType,
                             fCount, fStencilSettings);
 }
 
+void GrInOrderDrawBuffer::BatchDraw::execute(GrInOrderDrawBuffer* buf, const SetState* state) {
+    SkASSERT(state);
+    fBatch->generateGeometry(buf->getBatchBuffer(), &state->fState);
+
+}
+
 void GrInOrderDrawBuffer::SetState::execute(GrInOrderDrawBuffer*, const SetState*) {}
 
 void GrInOrderDrawBuffer::Clear::execute(GrInOrderDrawBuffer* buf, const SetState*) {
     if (GrColor_ILLEGAL == fColor) {
         buf->getGpu()->discard(this->renderTarget());
     } else {
         buf->getGpu()->clear(&fRect, fColor, fCanIgnoreRect, this->renderTarget());
     }
 }
 
@@ skipping 28 matching lines @@
                                             (ds, primProc, *this->getGpu()->caps(), scissor,
                                              dstCopy, drawType));
     if (ss->fState.mustSkip()) {
         fCmdBuffer.pop_back();
         return false;
     }
 
     ss->fPrimitiveProcessor->initBatchTracker(&ss->fBatchTracker,
                                               ss->fState.getInitBatchTracker());
 
-    if (fPrevState &&
+    if (fPrevState && fPrevState->fPrimitiveProcessor.get() &&
         fPrevState->fPrimitiveProcessor->canMakeEqual(fPrevState->fBatchTracker,
                                                       *ss->fPrimitiveProcessor,
                                                       ss->fBatchTracker) &&
         fPrevState->fState.isEqual(ss->fState)) {
         fCmdBuffer.pop_back();
     } else {
         fPrevState = ss;
         this->recordTraceMarkersIfNecessary();
     }
     return true;
 }
 
+bool GrInOrderDrawBuffer::recordStateAndShouldDraw(GrBatch* batch,
+                                                   const GrDrawState& ds,
+                                                   GrGpu::DrawType drawType,
+                                                   const GrScissorState& scissor,
+                                                   const GrDeviceCoordTexture* dstCopy) {
+    // TODO this gets much simpler when we have batches everywhere.
+    // If the previous command is also a set state, then we check to see if it has a Batch.  If so,
+    // and we can make the two batches equal, and we can combine the states, then we make them equal
+    SetState* ss = GrNEW_APPEND_TO_RECORDER(fCmdBuffer, SetState,
+                                            (batch, ds, *this->getGpu()->caps(), scissor,
+                                             dstCopy, drawType));
+    if (ss->fState.mustSkip()) {
+        fCmdBuffer.pop_back();
+        return false;
+    }
+
+    batch->initBatchTracker(ss->fState.getInitBatchTracker());
+
+    if (fPrevState && !fPrevState->fPrimitiveProcessor.get() &&
+        fPrevState->fState.isEqual(ss->fState)) {
+        fCmdBuffer.pop_back();
+    } else {
+        fPrevState = ss;
+        this->recordTraceMarkersIfNecessary();
+    }
+    return true;
+}
+
 void GrInOrderDrawBuffer::recordTraceMarkersIfNecessary() {
     SkASSERT(!fCmdBuffer.empty());
     SkASSERT(!cmd_has_trace_marker(fCmdBuffer.back().fType));
     const GrTraceMarkerSet& activeTraceMarkers = this->getActiveTraceMarkers();
     if (activeTraceMarkers.count() > 0) {
         fCmdBuffer.back().fType = add_trace_bit(fCmdBuffer.back().fType);
         fGpuCmdMarkers.push_back(activeTraceMarkers);
     }
 }