/**
* Get a texture (from the texture cache) of the correct size & format.
* Return true on success; false on failure.
*/
bool GrSWMaskHelper::getTexture(GrAutoScratchTexture* texture) {
GrTextureDesc desc;
desc.fWidth = fBM.width();
desc.fHeight = fBM.height();
desc.fConfig = kAlpha_8_GrPixelConfig;
if (fCompressMask) {
#ifdef SK_DEBUG
int dimX, dimY;
SkTextureCompressor::GetBlockDimensions(fCompressedFormat, &dimX, &dimY);
SkASSERT((desc.fWidth % dimX) == 0);
SkASSERT((desc.fHeight % dimY) == 0);
#endif
desc.fConfig = fmt_to_config(fCompressedFormat);
// If this config isn't supported then we should fall back to A8
if (!(fContext->getGpu()->caps()->isConfigTexturable(desc.fConfig))) {
SkDEBUGFAIL("Determining compression should be set from choose_compressed_fmt");
desc.fConfig = kAlpha_8_GrPixelConfig;
}
}
texture->set(fContext, desc);
return NULL != texture->texture();
}
void GrSWMaskHelper::compressTextureData(GrTexture *texture, const GrSurfaceDesc& desc) {
SkASSERT(GrPixelConfigIsCompressed(desc.fConfig));
SkASSERT(fmt_to_config(fCompressedFormat) == desc.fConfig);
SkAutoDataUnref cmpData(SkTextureCompressor::CompressBitmapToFormat(fBM, fCompressedFormat));
SkASSERT(cmpData);
this->sendTextureData(texture, desc, cmpData->data(), 0);
}
/**
* Get a texture (from the texture cache) of the correct size & format.
*/
GrTexture* GrSWMaskHelper::createTexture() {
GrSurfaceDesc desc;
desc.fWidth = fBM.width();
desc.fHeight = fBM.height();
desc.fConfig = kAlpha_8_GrPixelConfig;
if (kNone_CompressionMode != fCompressionMode) {
#ifdef SK_DEBUG
int dimX, dimY;
SkTextureCompressor::GetBlockDimensions(fCompressedFormat, &dimX, &dimY);
SkASSERT((desc.fWidth % dimX) == 0);
SkASSERT((desc.fHeight % dimY) == 0);
#endif
desc.fConfig = fmt_to_config(fCompressedFormat);
SkASSERT(fContext->getGpu()->caps()->isConfigTexturable(desc.fConfig));
}
return fContext->refScratchTexture(desc, GrContext::kApprox_ScratchTexMatch);
}