glus_image_hdr.h File Reference

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Functions
GLUSAPI GLUSboolean GLUSAPIENTRY	glusImageCreateHdr (GLUShdrimage *hdrimage, GLUSint width, GLUSint height, GLUSint depth, GLUSenum format)
	Creates a HDR image. More...
GLUSAPI GLUSboolean GLUSAPIENTRY	glusImageLoadHdr (const GLUSchar *filename, GLUShdrimage *hdrimage)
	Loads a HDR file. More...
GLUSAPI GLUSboolean GLUSAPIENTRY	glusImageSaveHdr (const GLUSchar *filename, const GLUShdrimage *hdrimage)
	Saves a HDR file. More...
GLUSAPI GLUSvoid GLUSAPIENTRY	glusImageDestroyHdr (GLUShdrimage *hdrimage)
	Destroys the content of a HDR structure. More...
GLUSAPI GLUSboolean GLUSAPIENTRY	glusImageSampleHdr2D (GLUSfloat rgb[3], const GLUShdrimage *hdrimage, const GLUSfloat st[2])
	Samples a RGB color value from a HDR 2D image. More...

Function Documentation

GLUSAPI GLUSboolean GLUSAPIENTRY glusImageCreateHdr	(	GLUShdrimage *	hdrimage,
		GLUSint	width,
		GLUSint	height,
		GLUSint	depth,
		GLUSenum	format
	)

Creates a HDR image.

Parameters

hdrimage	The structure to fill the HDR data.
width	Width of the image.
height	Height of the image.
depth	Depth of the image.
format	Format of the image.

Returns

GLUS_TRUE, if creating succeeded.

GLUSAPI GLUSvoid GLUSAPIENTRY glusImageDestroyHdr

(

GLUShdrimage *

hdrimage

)

Destroys the content of a HDR structure.

Has to be called for freeing the resources.

Parameters

hdrimage

The HDR file structure.

GLUSAPI GLUSboolean GLUSAPIENTRY glusImageLoadHdr	(	const GLUSchar *	filename,
		GLUShdrimage *	hdrimage
	)

Loads a HDR file.

Parameters

filename	The name of the file to load.
hdrimage	The structure to fill the HDR data.

Returns

GLUS_TRUE, if loading succeeded.

GLUSAPI GLUSboolean GLUSAPIENTRY glusImageSampleHdr2D	(	GLUSfloat	rgb[3],
		const GLUShdrimage *	hdrimage,
		const GLUSfloat	st[2]
	)

Samples a RGB color value from a HDR 2D image.

Sampling uses a bilinear filter.

Parameters

rgb	The resulting, sampled RGB color value.
hdrimage	The HDR image structure, containing the 2D texel data.
st	Texture coordinate, where to sample the 2D texture.

Returns

GLUS_TRUE, if sampling succeeded.

GLUSAPI GLUSboolean GLUSAPIENTRY glusImageSaveHdr	(	const GLUSchar *	filename,
		const GLUShdrimage *	hdrimage
	)

Saves a HDR file.

Parameters

filename	The name of the file to save.
hdrimage	The structure with the HDR data.

Returns

GLUS_TRUE, if saving succeeded.