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/*
* 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 "GrBufferedDrawTarget.h"
// We will use the reordering buffer, unless we have NVPR.
// TODO move NVPR to batch so we can reorder
static inline bool allow_reordering(const GrCaps* caps) {
return caps && caps->shaderCaps() && !caps->shaderCaps()->pathRenderingSupport();
}
GrBufferedDrawTarget::GrBufferedDrawTarget(GrContext* context)
: INHERITED(context)
, fCommands(GrCommandBuilder::Create(context->getGpu(), allow_reordering(context->caps())))
, fPathIndexBuffer(kPathIdxBufferMinReserve * sizeof(char)/4)
, fPathTransformBuffer(kPathXformBufferMinReserve * sizeof(float)/4)
, fPipelineBuffer(kPipelineBufferMinReserve)
, fDrawID(0) {
}
GrBufferedDrawTarget::~GrBufferedDrawTarget() {
this->reset();
}
void GrBufferedDrawTarget::onDrawBatch(GrBatch* batch) {
fCommands->recordDrawBatch(batch, *this->caps());
}
void GrBufferedDrawTarget::onDrawPath(const GrPathProcessor* pathProc,
const GrPath* path,
const GrStencilSettings& stencilSettings,
const PipelineInfo& pipelineInfo) {
GrPipelineOptimizations opts;
StateForPathDraw* state = this->createStateForPathDraw(pathProc, pipelineInfo, &opts);
if (!state) {
return;
}
fCommands->recordDrawPath(state, pathProc, path, stencilSettings);
}
void GrBufferedDrawTarget::onDrawPaths(const GrPathProcessor* pathProc,
const GrPathRange* pathRange,
const void* indices,
PathIndexType indexType,
const float transformValues[],
PathTransformType transformType,
int count,
const GrStencilSettings& stencilSettings,
const PipelineInfo& pipelineInfo) {
GrPipelineOptimizations opts;
StateForPathDraw* state = this->createStateForPathDraw(pathProc, pipelineInfo, &opts);
if (!state) {
return;
}
fCommands->recordDrawPaths(state, this, pathProc, pathRange, indices, indexType,
transformValues, transformType, count, stencilSettings,
opts);
}
void GrBufferedDrawTarget::onReset() {
fCommands->reset();
fPathIndexBuffer.rewind();
fPathTransformBuffer.rewind();
fPrevState.reset(NULL);
// Note, fPrevState points into fPipelineBuffer's allocation, so we have to reset first.
// Furthermore, we have to reset fCommands before fPipelineBuffer too.
if (fDrawID % kPipelineBufferHighWaterMark) {
fPipelineBuffer.rewind();
} else {
fPipelineBuffer.reset();
}
}
void GrBufferedDrawTarget::onFlush() {
fCommands->flush(this->getGpu(), this->getContext()->resourceProvider());
++fDrawID;
}
GrTargetCommands::StateForPathDraw*
GrBufferedDrawTarget::createStateForPathDraw(const GrPrimitiveProcessor* primProc,
const GrDrawTarget::PipelineInfo& pipelineInfo,
GrPipelineOptimizations* opts) {
StateForPathDraw* state = this->allocState(primProc);
if (!GrPipeline::CreateAt(state->pipelineLocation(), pipelineInfo.pipelineCreateArgs(), opts)) {
this->unallocState(state);
return NULL;
}
state->fPrimitiveProcessor->initBatchTracker(&state->fBatchTracker, *opts);
if (fPrevState && fPrevState->fPrimitiveProcessor.get() &&
fPrevState->fPrimitiveProcessor->canMakeEqual(fPrevState->fBatchTracker,
*state->fPrimitiveProcessor,
state->fBatchTracker) &&
GrPipeline::AreEqual(*fPrevState->getPipeline(), *state->getPipeline(), false)) {
this->unallocState(state);
} else {
fPrevState.reset(state);
}
return fPrevState;
}
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