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104 lines
3.5 KiB
C
104 lines
3.5 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 NvttTexture NvttTexture;
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typedef struct NvttOutputOptions NvttOutputOptions;
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// Global functions
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void nvttInitialize(...);
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unsigned int nvttGetVersion();
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const char * nvttGetErrorString(unsigned int error);
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// Texture functions
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NvttTexture * nvttCreateTexture();
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void nvttDestroyTexture(NvttTexture * tex);
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void nvttSetTexture2D(NvttTexture * tex, NvttInputFormat format, uint w, uint h, uint idx, void * data);
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void nvttResize(NvttTexture * img, uint w, uint h);
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unsigned int nvttDownsample(NvttTexture * img);
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void nvttOutputCompressed(NvttTexture * img, NvttOutputFormat format);
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void nvttOutputPixelFormat(NvttTexture * img, NvttOutputFormat 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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/*
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// Global functions
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void nvttInitialize(...);
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unsigned int nvttGetVersion();
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const char * nvttGetErrorString(unsigned int error);
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// Context object
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void nvttCreateContext();
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void nvttDestroyContext();
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void nvttSetParameter1i(unsigned int name, int value);
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void nvttSetParameter1f(unsigned int name, float value);
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void nvttSetParameter2f(unsigned int name, float v0, float v1);
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void nvttSetParameter3f(unsigned int name, float v0, float v1, float v2);
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void nvttSetParameter4f(unsigned int name, float v0, float v1, float v2, float v3);
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// Image object
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NvttImage * nvttCreateImage();
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void nvttDestroyImage(NvttImage * img);
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void nvttSetImageData(NvttImage * image, NvttInputFormat format, unsigned int w, unsigned int h, void * data);
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void nvttSetImageParameter1i(NvttImage * image, unsigned int name, int value);
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void nvttSetImageParameter1f(NvttImage * image, unsigned int name, float value);
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void nvttResizeImage(NvttImage * image, unsigned int w, unsigned int h);
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void nvttQuantizeImage(NvttImage * image, bool dither, unsigned int rbits, unsigned int gbits, unsigned int bbits, unsigned int abits);
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void nvttCompressImage(NvttImage * image, void * buffer, int size);
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*/
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#endif // NVTT_EXPERIMENTAL_H
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