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56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
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#ifndef NVTT_EXPERIMENTAL_H
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#define NVTT_EXPERIMENTAL_H
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#include <nvtt/nvtt.h>
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typedef struct NvttImage NvttImage;
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NvttImage * nvttCreateImage();
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void nvttDestroyImage(NvttImage * img);
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void nvttSetImageData(NvttImage * img, NvttInputFormat format, uint w, uint h, void * data);
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void nvttCompressImage(NvttImage * img, NvttFormat format);
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// How to control the compression parameters?
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// Using many arguments:
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// void nvttCompressImage(img, format, quality, r, g, b, a, ...);
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// Using existing compression option class:
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// compressionOptions = nvttCreateCompressionOptions();
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// nvttSetCompressionOptionsFormat(compressionOptions, format);
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// nvttSetCompressionOptionsQuality(compressionOptions, quality);
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// nvttSetCompressionOptionsQuality(compressionOptions, quality);
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// nvttSetCompressionOptionsColorWeights(compressionOptions, r, g, b, a);
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// ...
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// nvttCompressImage(img, compressionOptions);
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// Using thread local context state:
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// void nvttSetCompressionFormat(format);
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// void nvttSetCompressionQuality(quality);
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// void nvttSetCompressionColorWeights(r, g, b, a);
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// ...
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// nvttCompressImage(img);
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// Using thread local context state, but with GL style function arguments:
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// nvttCompressorParameteri(NVTT_FORMAT, format);
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// nvttCompressorParameteri(NVTT_QUALITY, quality);
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// nvttCompressorParameterf(NVTT_COLOR_WEIGHT_RED, r);
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// nvttCompressorParameterf(NVTT_COLOR_WEIGHT_GREEN, g);
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// nvttCompressorParameterf(NVTT_COLOR_WEIGHT_BLUE, b);
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// nvttCompressorParameterf(NVTT_COLOR_WEIGHT_ALPHA, a);
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// or nvttCompressorParameter4f(NVTT_COLOR_WEIGHTS, r, g, b, a);
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// ...
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// nvttCompressImage(img);
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// How do we get the compressed output?
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// - Using callbacks. (via new entrypoints, or through outputOptions)
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// - Return it explicitely from nvttCompressImage.
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// - Store it along the image, retrieve later explicitely with 'nvttGetCompressedData(img, ...)'
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#endif // NVTT_EXPERIMENTAL_H
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