Whether the image is HDR or not), using: stbi_is_hdr(char *filename) iPhone PNG supportīy default we convert iphone-formatted PNGs back to RGB, even though they are internally encoded differently. If you load LDR images through this interface, those images will be promoted to floating point values, run through the inverse of constantsĬorresponding to the above: stbi_ldr_to_hdr_scale(1.0f) įinally, given a filename (or an open file or memory block) containing image data, you can query for the 'most appropriate' interface to use (that is, (note, do not use inverse constants stbi_image will invert them appropriately).Īdditionally, there is a new, parallel interface for loading files as (linear) floats to preserve the full dynamic range: float *data = stbi_loadf(filename, &x, &y, &n, 0) YouĬan still load any file through the existing interface if you attempt to load an HDR file, it will be automatically remapped to LDR, assuming gammaĢ.2 and an arbitrary scale factor defaulting to 1 both of these constants can be reconfigured through this interface: stbi_hdr_to_ldr_gamma(2.2f) HDR file format, although the support is provided generically.

Stb_image now supports loading HDR images in general, and currently the Radiance. but 'n' will always be the number that it would have been if you said 0 replace '0' with '1'.'4' to force that many components per pixel x = width, y = height, n = # 8-bit components per pixel. Unsigned char *data = stbi_load(filename, &x, &y, &n, 0) SIMD acceleration on x86/圆4 (SSE2) and ARM (NEON)īasic usage (see HDR discussion below for HDR usage): int x,y,n.decode from memory or through FILE (define STBI_NO_STDIO to remove code).

GIF (*desired_channels always reports as 4-channel)Īnimated GIF still needs a proper API, but here's one way to do it.

PSD (composited view only, no extra channels, 8/16 bit-per-channel).

TGA (not sure what subset, if a subset).

PNG 1/2/4/8-bit-per-channel (16 bpc not supported).

JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib.

Primarily of interest to game developers and other people who can avoid problematic images and only need the trivial interface. Native bindings to stb_image.h from the stb library.

Stbimage image example java lwjgl 3