63 lines
3.5 KiB
C
63 lines
3.5 KiB
C
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#ifndef IMAGE_H
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#define IMAGE_H
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extern int image_width, image_height;
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// swizzle components (even converting number of components) and flip images
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// (warning: input must be different than output due to non-linear read/write)
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// (tip: component indices can contain values | 0x80000000 to tell it to
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// store them directly into output, so 255 | 0x80000000 would write 255)
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void Image_CopyMux(unsigned char *outpixels, const unsigned char *inpixels, int inputwidth, int inputheight, qboolean inputflipx, qboolean inputflipy, qboolean inputflipdiagonal, int numoutputcomponents, int numinputcomponents, int *outputinputcomponentindices);
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// applies gamma correction to RGB pixels, in can be the same as out
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void Image_GammaRemapRGB(const unsigned char *in, unsigned char *out, int pixels, const unsigned char *gammar, const unsigned char *gammag, const unsigned char *gammab);
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// converts 8bit image data to BGRA, in can not be the same as out
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void Image_Copy8bitBGRA(const unsigned char *in, unsigned char *out, int pixels, const unsigned int *pal);
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void Image_StripImageExtension (const char *in, char *out, size_t size_out);
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// called by conchars.tga loader in gl_draw.c, otherwise private
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unsigned char *LoadTGA_BGRA (const unsigned char *f, int filesize, int *miplevel);
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// loads a texture, as pixel data
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unsigned char *loadimagepixelsbgra (const char *filename, qboolean complain, qboolean allowFixtrans, qboolean convertsRGB, int *miplevel);
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// loads an 8bit pcx image into a 296x194x8bit buffer, with cropping as needed
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qboolean LoadPCX_QWSkin(const unsigned char *f, int filesize, unsigned char *pixels, int outwidth, int outheight);
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// loads a texture, as a texture
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rtexture_t *loadtextureimage (rtexturepool_t *pool, const char *filename, qboolean complain, int flags, qboolean allowFixtrans, qboolean sRGB);
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// writes an upside down BGR image into a TGA
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qboolean Image_WriteTGABGR_preflipped (const char *filename, int width, int height, const unsigned char *data);
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// writes a BGRA image into a TGA file
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qboolean Image_WriteTGABGRA (const char *filename, int width, int height, const unsigned char *data);
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// resizes the image (in can not be the same as out)
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void Image_Resample32(const void *indata, int inwidth, int inheight, int indepth, void *outdata, int outwidth, int outheight, int outdepth, int quality);
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// scales the image down by a power of 2 (in can be the same as out)
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void Image_MipReduce32(const unsigned char *in, unsigned char *out, int *width, int *height, int *depth, int destwidth, int destheight, int destdepth);
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void Image_HeightmapToNormalmap_BGRA(const unsigned char *inpixels, unsigned char *outpixels, int width, int height, int clamp, float bumpscale);
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// console command to fix the colors of transparent pixels (to prevent weird borders)
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void Image_FixTransparentPixels_f(void);
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extern cvar_t r_fixtrans_auto;
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#define Image_LinearFloatFromsRGBFloat(c) (((c) <= 0.04045f) ? (c) * (1.0f / 12.92f) : (float)pow(((c) + 0.055f)*(1.0f/1.055f), 2.4f))
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#define Image_sRGBFloatFromLinearFloat(c) (((c) < 0.0031308f) ? (c) * 12.92f : 1.055f * (float)pow((c), 1.0f/2.4f) - 0.055f)
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#define Image_LinearFloatFromsRGB(c) Image_LinearFloatFromsRGBFloat((c) * (1.0f / 255.0f))
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#define Image_sRGBFloatFromLinear(c) Image_sRGBFloatFromLinearFloat((c) * (1.0f / 255.0f))
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#define Image_sRGBFloatFromLinear_Lightmap(c) Image_sRGBFloatFromLinearFloat((c) * (2.0f / 255.0f)) * 0.5f
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void Image_MakeLinearColorsFromsRGB(unsigned char *pout, const unsigned char *pin, int numpixels);
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void Image_MakesRGBColorsFromLinear_Lightmap(unsigned char *pout, const unsigned char *pin, int numpixels);
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#endif
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