jon eyeNsky
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| // Try g4dn.metal | |
| // Try to enable GPU if available, otherwise fall back to CPU. | |
| std::string gpuMsg; | |
| if (P1::ImageSdk::IsCudaSupported(gpuMsg)) { | |
| int ndev = P1::ImageSdk::GetNumberOfCudaDevices(); | |
| std::cout << "CUDA available, devices: " << ndev << ". Using device 0.\n"; | |
| if (ndev > 0) { | |
| P1::ImageSdk::SetCudaDevice(0); | |
| P1::ImageSdk::SetArchitecture(P1::ImageSdk::Architecture::Cuda); | |
| } |
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| Mapnik supports the PROJ.4 WKT for projections and buried deep in the doc's is one called | |
| 'Two Point Equidistant'. You provide the left and right points and the map is rotated | |
| such that these two points are horizontal in the output. | |
| This allows you to rotate the map to any angle (including south up!!) and the text is | |
| rendered correctly! You don't have to change the projections of your input vectors. | |
| Simply tweak the mapnik generate_image.py script like this: | |
| Change: |