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/*
* 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 "GrResourceProvider.h"
#include "GrGpu.h"
#include "GrIndexBuffer.h"
#include "GrPathRendering.h"
#include "GrResourceCache.h"
#include "GrResourceKey.h"
#include "GrVertexBuffer.h"
GR_DECLARE_STATIC_UNIQUE_KEY(gQuadIndexBufferKey);
GrResourceProvider::GrResourceProvider(GrGpu* gpu, GrResourceCache* cache) : INHERITED(gpu, cache) {
GR_DEFINE_STATIC_UNIQUE_KEY(gQuadIndexBufferKey);
fQuadIndexBufferKey = gQuadIndexBufferKey;
}
const GrIndexBuffer* GrResourceProvider::createInstancedIndexBuffer(const uint16_t* pattern,
int patternSize,
int reps,
int vertCount,
const GrUniqueKey& key) {
size_t bufferSize = patternSize * reps * sizeof(uint16_t);
GrIndexBuffer* buffer = this->getIndexBuffer(bufferSize, /* dynamic = */ false, true);
if (!buffer) {
return NULL;
}
uint16_t* data = (uint16_t*) buffer->map();
bool useTempData = (NULL == data);
if (useTempData) {
data = SkNEW_ARRAY(uint16_t, reps * patternSize);
}
for (int i = 0; i < reps; ++i) {
int baseIdx = i * patternSize;
uint16_t baseVert = (uint16_t)(i * vertCount);
for (int j = 0; j < patternSize; ++j) {
data[baseIdx+j] = baseVert + pattern[j];
}
}
if (useTempData) {
if (!buffer->updateData(data, bufferSize)) {
buffer->unref();
return NULL;
}
SkDELETE_ARRAY(data);
} else {
buffer->unmap();
}
this->assignUniqueKeyToResource(key, buffer);
return buffer;
}
const GrIndexBuffer* GrResourceProvider::createQuadIndexBuffer() {
static const int kMaxQuads = 1 << 12; // max possible: (1 << 14) - 1;
GR_STATIC_ASSERT(4 * kMaxQuads <= 65535);
static const uint16_t kPattern[] = { 0, 1, 2, 0, 2, 3 };
return this->createInstancedIndexBuffer(kPattern, 6, kMaxQuads, 4, fQuadIndexBufferKey);
}
GrPath* GrResourceProvider::createPath(const SkPath& path, const GrStrokeInfo& stroke) {
SkASSERT(this->gpu()->pathRendering());
return this->gpu()->pathRendering()->createPath(path, stroke);
}
GrPathRange* GrResourceProvider::createPathRange(GrPathRange::PathGenerator* gen,
const GrStrokeInfo& stroke) {
SkASSERT(this->gpu()->pathRendering());
return this->gpu()->pathRendering()->createPathRange(gen, stroke);
}
GrPathRange* GrResourceProvider::createGlyphs(const SkTypeface* tf, const SkDescriptor* desc,
const GrStrokeInfo& stroke) {
SkASSERT(this->gpu()->pathRendering());
return this->gpu()->pathRendering()->createGlyphs(tf, desc, stroke);
}
GrIndexBuffer* GrResourceProvider::getIndexBuffer(size_t size, bool dynamic,
bool calledDuringFlush) {
if (this->isAbandoned()) {
return NULL;
}
if (dynamic) {
// bin by pow2 with a reasonable min
static const uint32_t MIN_SIZE = 1 << 12;
size = SkTMax(MIN_SIZE, GrNextPow2(SkToUInt(size)));
GrScratchKey key;
GrIndexBuffer::ComputeScratchKey(size, dynamic, &key);
uint32_t scratchFlags = 0;
if (calledDuringFlush) {
scratchFlags = GrResourceCache::kRequireNoPendingIO_ScratchFlag;
} else {
scratchFlags = GrResourceCache::kPreferNoPendingIO_ScratchFlag;
}
GrGpuResource* resource = this->cache()->findAndRefScratchResource(key, scratchFlags);
if (resource) {
return static_cast<GrIndexBuffer*>(resource);
}
}
return this->gpu()->createIndexBuffer(size, dynamic);
}
GrVertexBuffer* GrResourceProvider::getVertexBuffer(size_t size, bool dynamic,
bool calledDuringFlush) {
if (this->isAbandoned()) {
return NULL;
}
if (dynamic) {
// bin by pow2 with a reasonable min
static const uint32_t MIN_SIZE = 1 << 15;
size = SkTMax(MIN_SIZE, GrNextPow2(SkToUInt(size)));
GrScratchKey key;
GrVertexBuffer::ComputeScratchKey(size, dynamic, &key);
uint32_t scratchFlags = 0;
if (calledDuringFlush) {
scratchFlags = GrResourceCache::kRequireNoPendingIO_ScratchFlag;
} else {
scratchFlags = GrResourceCache::kPreferNoPendingIO_ScratchFlag;
}
GrGpuResource* resource = this->cache()->findAndRefScratchResource(key, scratchFlags);
if (resource) {
return static_cast<GrVertexBuffer*>(resource);
}
}
return this->gpu()->createVertexBuffer(size, dynamic);
}
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