Make GrVertexBatch objects hold their own draws during GrDrawTarget flush

src/gpu/GrTargetCommands.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTargetCommands.h"
 
-#include "GrBufferedDrawTarget.h"
-
+#include "GrBatchFlushState.h"
+#include "GrGpu.h"
+#include "GrPathRendering.h"
 #include "batches/GrDrawBatch.h"
 #include "batches/GrVertexBatch.h"
 
 GrBATCH_SPEW(int32_t GrTargetCommands::Cmd::gUniqueID = 0;)
 
 void GrTargetCommands::reset() {
     fCmdBuffer.reset();
-    fBatchTarget.reset();
 }
 
-void GrTargetCommands::flush(GrBufferedDrawTarget* bufferedDrawTarget) {
+void GrTargetCommands::flush(GrGpu* gpu, GrResourceProvider* resourceProvider) {
     GrBATCH_INFO("Flushing\n");
     if (fCmdBuffer.empty()) {
         return;
     }
-
-    GrGpu* gpu = bufferedDrawTarget->getGpu();
-
+    GrBatchFlushState flushState(gpu, resourceProvider, fLastFlushToken);
     // Loop over all batches and generate geometry
     CmdBuffer::Iter genIter(fCmdBuffer);
     while (genIter.next()) {
         if (Cmd::kDrawBatch_CmdType == genIter->type()) {
             DrawBatch* db = reinterpret_cast<DrawBatch*>(genIter.get());
-            fBatchTarget.resetNumberOfDraws();
             // TODO: encapsulate the specialization of GrVertexBatch in GrVertexBatch so that we can
             // remove this cast. Currently all GrDrawBatches are in fact GrVertexBatch.
             GrVertexBatch* vertexBatch = static_cast<GrVertexBatch*>(db->batch());
 
-            vertexBatch->generateGeometry(&fBatchTarget);
-            vertexBatch->setNumberOfDraws(fBatchTarget.numberOfDraws());
+            vertexBatch->prepareDraws(&flushState);
         }
     }
 
-    fBatchTarget.preFlush();
+    flushState.preIssueDraws();
 
     CmdBuffer::Iter iter(fCmdBuffer);
-
     while (iter.next()) {
-        iter->execute(gpu);
+        iter->execute(&flushState);
     }
-
-    fBatchTarget.postFlush();
+    fLastFlushToken = flushState.lastFlushedToken();
 }
 
-void GrTargetCommands::StencilPath::execute(GrGpu* gpu) {
+void GrTargetCommands::StencilPath::execute(GrBatchFlushState* state) {
     GrPathRendering::StencilPathArgs args(fUseHWAA, fRenderTarget.get(), &fViewMatrix, &fScissor,
                                           &fStencil);
-    gpu->pathRendering()->stencilPath(args, this->path());
+    state->gpu()->pathRendering()->stencilPath(args, this->path());
 }
 
-void GrTargetCommands::DrawPath::execute(GrGpu* gpu) {
+void GrTargetCommands::DrawPath::execute(GrBatchFlushState* state) {
     if (!fState->fCompiled) {
-        gpu->buildProgramDesc(&fState->fDesc, *fState->fPrimitiveProcessor, *fState->getPipeline(),
-                              fState->fBatchTracker);
+        state->gpu()->buildProgramDesc(&fState->fDesc, *fState->fPrimitiveProcessor,
+                                       *fState->getPipeline(), fState->fBatchTracker);
         fState->fCompiled = true;
     }
     GrPathRendering::DrawPathArgs args(fState->fPrimitiveProcessor.get(), fState->getPipeline(),
                                        &fState->fDesc, &fState->fBatchTracker, &fStencilSettings);
-    gpu->pathRendering()->drawPath(args, this->path());
+    state->gpu()->pathRendering()->drawPath(args, this->path());
 }
 
-void GrTargetCommands::DrawPaths::execute(GrGpu* gpu) {
+void GrTargetCommands::DrawPaths::execute(GrBatchFlushState* state) {
     if (!fState->fCompiled) {
-        gpu->buildProgramDesc(&fState->fDesc, *fState->fPrimitiveProcessor, *fState->getPipeline(),
-                              fState->fBatchTracker);
+        state->gpu()->buildProgramDesc(&fState->fDesc, *fState->fPrimitiveProcessor,
+                                       *fState->getPipeline(), fState->fBatchTracker);
         fState->fCompiled = true;
     }
     GrPathRendering::DrawPathArgs args(fState->fPrimitiveProcessor.get(), fState->getPipeline(),
                                        &fState->fDesc, &fState->fBatchTracker, &fStencilSettings);
-    gpu->pathRendering()->drawPaths(args, this->pathRange(), fIndices, fIndexType, fTransforms,
-                                    fTransformType, fCount);
+    state->gpu()->pathRendering()->drawPaths(args, this->pathRange(), fIndices, fIndexType,
+                                             fTransforms, fTransformType, fCount);
 }
 
-void GrTargetCommands::DrawBatch::execute(GrGpu* gpu) {
+void GrTargetCommands::DrawBatch::execute(GrBatchFlushState* state) {
     // TODO: encapsulate the specialization of GrVertexBatch in GrVertexBatch so that we can
     // remove this cast. Currently all GrDrawBatches are in fact GrVertexBatch.
-    const GrVertexBatch* vertexBatch = static_cast<const GrVertexBatch*>(fBatch.get());
-    fBatchTarget->flushNext(vertexBatch->numberOfDraws());
+    GrVertexBatch* vertexBatch = static_cast<GrVertexBatch*>(fBatch.get());
+    vertexBatch->issueDraws(state);
 }
 
-void GrTargetCommands::Clear::execute(GrGpu* gpu) {
+
+void GrTargetCommands::Clear::execute(GrBatchFlushState* state) {
     if (GrColor_ILLEGAL == fColor) {
-        gpu->discard(this->renderTarget());
+        state->gpu()->discard(this->renderTarget());
     } else {
-        gpu->clear(fRect, fColor, this->renderTarget());
+        state->gpu()->clear(fRect, fColor, this->renderTarget());
     }
 }
 
-void GrTargetCommands::ClearStencilClip::execute(GrGpu* gpu) {
-    gpu->clearStencilClip(fRect, fInsideClip, this->renderTarget());
+void GrTargetCommands::ClearStencilClip::execute(GrBatchFlushState* state) {
+    state->gpu()->clearStencilClip(fRect, fInsideClip, this->renderTarget());
 }
 
-void GrTargetCommands::CopySurface::execute(GrGpu* gpu) {
-    gpu->copySurface(this->dst(), this->src(), fSrcRect, fDstPoint);
+void GrTargetCommands::CopySurface::execute(GrBatchFlushState* state) {
+    state->gpu()->copySurface(this->dst(), this->src(), fSrcRect, fDstPoint);
 }