GrIndexBuffer* GrGpu::createInstancedIndexBuffer(const uint16_t* pattern,
int patternSize,
int reps,
int vertCount,
bool isDynamic) {
size_t bufferSize = patternSize * reps * sizeof(uint16_t);
GrGpu* me = const_cast<GrGpu*>(this);
GrIndexBuffer* buffer = me->createIndexBuffer(bufferSize, isDynamic);
if (buffer) {
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)) {
SkFAIL("Can't get indices into buffer!");
}
SkDELETE_ARRAY(data);
} else {
buffer->unmap();
}
}
return buffer;
}
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;
}
GrIndexBuffer* GrGpu::createIndexBuffer(size_t size, bool dynamic) {
this->handleDirtyContext();
GrIndexBuffer* ib = this->onCreateIndexBuffer(size, dynamic);
if (!this->caps()->reuseScratchBuffers()) {
ib->resourcePriv().removeScratchKey();
}
return ib;
}
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);
// This is typically used in GrBatchs, so we assume kNoPendingIO.
GrIndexBuffer* buffer = this->createIndexBuffer(bufferSize, kStatic_BufferUsage,
kNoPendingIO_Flag);
if (!buffer) {
return nullptr;
}
uint16_t* data = (uint16_t*) buffer->map();
bool useTempData = (nullptr == data);
if (useTempData) {
data = new 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 nullptr;
}
delete[] data;
} else {
buffer->unmap();
}
this->assignUniqueKeyToResource(key, buffer);
return buffer;
}
