convert lightmaps to sRGB for nice sRGB support

[xonotic/darkplaces.git] / image.h

diff --git a/image.h b/image.h
index c955fafbcf36bf201afc19d6bf05c3862e1ff804..04d33378ff1be29f4a6610dc2b97b37103c2d91f 100644 (file)
--- a/image.h
+++ b/image.h
@@ -1,14 +1,59 @@
 
-void Image_GammaRemapRGB(byte *in, byte *out, int pixels, byte *gammar, byte *gammag, byte *gammab);
-void Image_Copy8bitRGBA(byte *in, byte *out, int pixels, int *pal);
-int image_makemask (byte *in, byte *out, int size);
-byte* loadimagepixels (char* filename, qboolean complain, int matchwidth, int matchheight);
-rtexture_t *loadtextureimage (rtexturepool_t *pool, char* filename, int matchwidth, int matchheight, qboolean complain, qboolean mipmap, qboolean precache);
-byte* loadimagepixelsmask (char* filename, qboolean complain, int matchwidth, int matchheight);
-rtexture_t *loadtextureimagemask (rtexturepool_t *pool, char* filename, int matchwidth, int matchheight, qboolean complain, qboolean mipmap, qboolean precache);
-rtexture_t *image_masktex;
-rtexture_t *loadtextureimagewithmask (rtexturepool_t *pool, char* filename, int matchwidth, int matchheight, qboolean complain, qboolean mipmap, qboolean precache);
-void Image_WriteTGARGB_preflipped (char *filename, int width, int height, byte *data);
-void Image_WriteTGARGB (char *filename, int width, int height, byte *data);
-void Image_WriteTGARGBA (char *filename, int width, int height, byte *data);
-qboolean Image_CheckAlpha(byte *data, int size, qboolean rgba);
+#ifndef IMAGE_H
+#define IMAGE_H
+
+extern int image_width, image_height;
+
+
+// swizzle components (even converting number of components) and flip images
+// (warning: input must be different than output due to non-linear read/write)
+// (tip: component indices can contain values | 0x80000000 to tell it to
+// store them directly into output, so 255 | 0x80000000 would write 255)
+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);
+
+// applies gamma correction to RGB pixels, in can be the same as out
+void Image_GammaRemapRGB(const unsigned char *in, unsigned char *out, int pixels, const unsigned char *gammar, const unsigned char *gammag, const unsigned char *gammab);
+
+// converts 8bit image data to BGRA, in can not be the same as out
+void Image_Copy8bitBGRA(const unsigned char *in, unsigned char *out, int pixels, const unsigned int *pal);
+
+void Image_StripImageExtension (const char *in, char *out, size_t size_out);
+
+// called by conchars.tga loader in gl_draw.c, otherwise private
+unsigned char *LoadTGA_BGRA (const unsigned char *f, int filesize, int *miplevel);
+
+// loads a texture, as pixel data
+unsigned char *loadimagepixelsbgra (const char *filename, qboolean complain, qboolean allowFixtrans, qboolean convertsRGB, int *miplevel);
+
+// loads an 8bit pcx image into a 296x194x8bit buffer, with cropping as needed
+qboolean LoadPCX_QWSkin(const unsigned char *f, int filesize, unsigned char *pixels, int outwidth, int outheight);
+
+// loads a texture, as a texture
+rtexture_t *loadtextureimage (rtexturepool_t *pool, const char *filename, qboolean complain, int flags, qboolean allowFixtrans, qboolean sRGB);
+
+// writes an upside down BGR image into a TGA
+qboolean Image_WriteTGABGR_preflipped (const char *filename, int width, int height, const unsigned char *data);
+
+// writes a BGRA image into a TGA file
+qboolean Image_WriteTGABGRA (const char *filename, int width, int height, const unsigned char *data);
+
+// resizes the image (in can not be the same as out)
+void Image_Resample32(const void *indata, int inwidth, int inheight, int indepth, void *outdata, int outwidth, int outheight, int outdepth, int quality);
+
+// scales the image down by a power of 2 (in can be the same as out)
+void Image_MipReduce32(const unsigned char *in, unsigned char *out, int *width, int *height, int *depth, int destwidth, int destheight, int destdepth);
+
+void Image_HeightmapToNormalmap_BGRA(const unsigned char *inpixels, unsigned char *outpixels, int width, int height, int clamp, float bumpscale);
+
+// console command to fix the colors of transparent pixels (to prevent weird borders)
+void Image_FixTransparentPixels_f(void);
+extern cvar_t r_fixtrans_auto;
+
+#define Image_LinearFloatFromsRGB(c) (((c) < 11) ? (c) * 0.000302341331f : (float)pow(((c)*(1.0f/256.0f) + 0.055f)*(1.0f/1.0555f), 2.4f))
+#define Image_sRGBFloatFromLinear(c) (((c) < 1) ? (c) * 0.05046875f : 1.055f * (float)pow((c)*(1.0f/256.0f), 1.0f/2.4f) - 0.055f)
+
+void Image_MakeLinearColorsFromsRGB(unsigned char *pout, const unsigned char *pin, int numpixels);
+void Image_MakesRGBColorsFromLinear(unsigned char *pout, const unsigned char *pin, int numpixels);
+
+#endif
+