X-Git-Url: http://git.xonotic.org/?a=blobdiff_plain;f=image.c;h=c556f3930bfbc7cd0170ceaeeb439908673d9718;hb=2000fe0dea529231a494c63436f171829cbf43e5;hp=2f805795b4c32f6e2da79f05e8e59a4e5f3a1528;hpb=b15cc6cadea920bb80849ef07fa72622b1a75b69;p=xonotic%2Fdarkplaces.git

diff --git a/image.c b/image.c
index 2f805795..c556f393 100644
--- a/image.c
+++ b/image.c
@@ -8,6 +8,14 @@
 int		image_width;
 int		image_height;
 
+void Image_CopyAlphaFromBlueBGRA(unsigned char *outpixels, const unsigned char *inpixels, int w, int h)
+{
+	int i, n;
+	n = w * h;
+	for(i = 0; i < n; ++i)
+		outpixels[4*i+3] = inpixels[4*i]; // blue channel
+}
+
 #if 1
 // written by LordHavoc in a readable way, optimized by Vic, further optimized by LordHavoc (the non-special index case), readable version preserved below this
 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)
@@ -181,7 +189,7 @@ typedef struct pcx_s
 LoadPCX
 ============
 */
-unsigned char* LoadPCX_BGRA (const unsigned char *f, int filesize)
+unsigned char* LoadPCX_BGRA (const unsigned char *f, int filesize, int *miplevel)
 {
 	pcx_t pcx;
 	unsigned char *a, *b, *image_buffer, *pbuf;
@@ -211,7 +219,7 @@ unsigned char* LoadPCX_BGRA (const unsigned char *f, int filesize)
 
 	image_width = pcx.xmax + 1 - pcx.xmin;
 	image_height = pcx.ymax + 1 - pcx.ymin;
-	if (pcx.manufacturer != 0x0a || pcx.version != 5 || pcx.encoding != 1 || pcx.bits_per_pixel != 8 || image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
+	if (pcx.manufacturer != 0x0a || pcx.version != 5 || pcx.encoding != 1 || pcx.bits_per_pixel != 8 || image_width > 32768 || image_height > 32768 || image_width <= 0 || image_height <= 0)
 	{
 		Con_Print("Bad pcx file\n");
 		return NULL;
@@ -374,7 +382,7 @@ void PrintTargaHeader(TargaHeader *t)
 LoadTGA
 =============
 */
-unsigned char *LoadTGA_BGRA (const unsigned char *f, int filesize)
+unsigned char *LoadTGA_BGRA (const unsigned char *f, int filesize, int *miplevel)
 {
 	int x, y, pix_inc, row_inci, runlen, alphabits;
 	unsigned char *image_buffer;
@@ -408,7 +416,7 @@ unsigned char *LoadTGA_BGRA (const unsigned char *f, int filesize)
 	targa_header.pixel_size = f[16];
 	targa_header.attributes = f[17];
 
-	if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
+	if (image_width > 32768 || image_height > 32768 || image_width <= 0 || image_height <= 0)
 	{
 		Con_Print("LoadTGA: invalid size\n");
 		PrintTargaHeader(&targa_header);
@@ -601,6 +609,13 @@ unsigned char *LoadTGA_BGRA (const unsigned char *f, int filesize)
 						*pixbufi++ = palettei[*fin++];
 				}
 			}
+
+			if (x != image_width)
+			{
+				// pixbufi is useless now
+				Con_Printf("LoadTGA: corrupt file\n");
+				break;
+			}
 		}
 		break;
 	case 10:
@@ -649,6 +664,13 @@ unsigned char *LoadTGA_BGRA (const unsigned char *f, int filesize)
 						}
 					}
 				}
+
+				if (x != image_width)
+				{
+					// pixbufi is useless now
+					Con_Printf("LoadTGA: corrupt file\n");
+					break;
+				}
 			}
 		}
 		else
@@ -695,6 +717,13 @@ unsigned char *LoadTGA_BGRA (const unsigned char *f, int filesize)
 						}
 					}
 				}
+
+				if (x != image_width)
+				{
+					// pixbufi is useless now
+					Con_Printf("LoadTGA: corrupt file\n");
+					break;
+				}
 			}
 		}
 		break;
@@ -717,7 +746,7 @@ typedef struct q2wal_s
 	int			value;
 } q2wal_t;
 
-unsigned char *LoadWAL_BGRA (const unsigned char *f, int filesize)
+unsigned char *LoadWAL_BGRA (const unsigned char *f, int filesize, int *miplevel)
 {
 	unsigned char *image_buffer;
 	const q2wal_t *inwal = (const q2wal_t *)f;
@@ -730,7 +759,7 @@ unsigned char *LoadWAL_BGRA (const unsigned char *f, int filesize)
 
 	image_width = LittleLong(inwal->width);
 	image_height = LittleLong(inwal->height);
-	if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
+	if (image_width > 32768 || image_height > 32768 || image_width <= 0 || image_height <= 0)
 	{
 		Con_Printf("LoadWAL: invalid size %ix%i\n", image_width, image_height);
 		return NULL;
@@ -767,10 +796,28 @@ void Image_StripImageExtension (const char *in, char *out, size_t size_out)
 		strlcpy(out, in, size_out);
 }
 
+static unsigned char image_linearfromsrgb[256];
+
+void Image_MakeLinearColorsFromsRGB(unsigned char *pout, const unsigned char *pin, int numpixels)
+{
+	int i;
+	// this math from http://www.opengl.org/registry/specs/EXT/texture_sRGB.txt
+	if (!image_linearfromsrgb[255])
+		for (i = 0;i < 256;i++)
+			image_linearfromsrgb[i] = (unsigned char)(Image_LinearFloatFromsRGB(i) * 256.0f);
+	for (i = 0;i < numpixels;i++)
+	{
+		pout[i*4+0] = image_linearfromsrgb[pin[i*4+0]];
+		pout[i*4+1] = image_linearfromsrgb[pin[i*4+1]];
+		pout[i*4+2] = image_linearfromsrgb[pin[i*4+2]];
+		pout[i*4+3] = pin[i*4+3];
+	}
+}
+
 typedef struct imageformat_s
 {
 	const char *formatstring;
-	unsigned char *(*loadfunc)(const unsigned char *f, int filesize);
+	unsigned char *(*loadfunc)(const unsigned char *f, int filesize, int *miplevel);
 }
 imageformat_t;
 
@@ -846,12 +893,12 @@ imageformat_t imageformats_other[] =
 };
 
 int fixtransparentpixels(unsigned char *data, int w, int h);
-unsigned char *loadimagepixelsbgra (const char *filename, qboolean complain, qboolean allowFixtrans)
+unsigned char *loadimagepixelsbgra (const char *filename, qboolean complain, qboolean allowFixtrans, qboolean convertsRGB, int *miplevel)
 {
 	fs_offset_t filesize;
 	imageformat_t *firstformat, *format;
-	unsigned char *f, *data = NULL;
-	char basename[MAX_QPATH], name[MAX_QPATH], *c;
+	unsigned char *f, *data = NULL, *data2 = NULL;
+	char basename[MAX_QPATH], name[MAX_QPATH], name2[MAX_QPATH], *c;
 	//if (developer_memorydebug.integer)
 	//	Mem_CheckSentinelsGlobal();
 	if (developer_texturelogging.integer)
@@ -888,12 +935,30 @@ unsigned char *loadimagepixelsbgra (const char *filename, qboolean complain, qbo
 		f = FS_LoadFile(name, tempmempool, true, &filesize);
 		if (f)
 		{
-			data = format->loadfunc(f, filesize);
+			int mymiplevel = miplevel ? *miplevel : 0;
+			data = format->loadfunc(f, (int)filesize, &mymiplevel);
 			Mem_Free(f);
 			if (data)
 			{
-				if (developer.integer >= 10)
-					Con_Printf("loaded image %s (%dx%d)\n", name, image_width, image_height);
+				if(format->loadfunc == JPEG_LoadImage_BGRA) // jpeg can't do alpha, so let's simulate it by loading another jpeg
+				{
+					dpsnprintf (name2, sizeof(name2), format->formatstring, va("%s_alpha", basename));
+					f = FS_LoadFile(name2, tempmempool, true, &filesize);
+					if(f)
+					{
+						int mymiplevel2 = miplevel ? *miplevel : 0;
+						data2 = format->loadfunc(f, (int)filesize, &mymiplevel2);
+						if(mymiplevel != mymiplevel2)
+							Host_Error("loadimagepixelsbgra: miplevels differ");
+						Mem_Free(f);
+						Image_CopyAlphaFromBlueBGRA(data, data2, image_width, image_height);
+						Mem_Free(data2);
+					}
+				}
+				if (developer_loading.integer)
+					Con_DPrintf("loaded image %s (%dx%d)\n", name, image_width, image_height);
+				if(miplevel)
+					*miplevel = mymiplevel;
 				//if (developer_memorydebug.integer)
 				//	Mem_CheckSentinelsGlobal();
 				if(allowFixtrans && r_fixtrans_auto.integer)
@@ -912,6 +977,8 @@ unsigned char *loadimagepixelsbgra (const char *filename, qboolean complain, qbo
 						}
 					}
 				}
+				if (convertsRGB)
+					Image_MakeLinearColorsFromsRGB(data, data, image_width * image_height);
 				return data;
 			}
 			else
@@ -936,13 +1003,15 @@ unsigned char *loadimagepixelsbgra (const char *filename, qboolean complain, qbo
 	return NULL;
 }
 
-rtexture_t *loadtextureimage (rtexturepool_t *pool, const char *filename, qboolean complain, int flags, qboolean allowFixtrans)
+extern cvar_t gl_picmip;
+rtexture_t *loadtextureimage (rtexturepool_t *pool, const char *filename, qboolean complain, int flags, qboolean allowFixtrans, qboolean sRGB)
 {
 	unsigned char *data;
 	rtexture_t *rt;
-	if (!(data = loadimagepixelsbgra (filename, complain, allowFixtrans)))
+	int miplevel = R_PicmipForFlags(flags);
+	if (!(data = loadimagepixelsbgra (filename, complain, allowFixtrans, false, &miplevel)))
 		return 0;
-	rt = R_LoadTexture2D(pool, filename, image_width, image_height, data, TEXTYPE_BGRA, flags, NULL);
+	rt = R_LoadTexture2D(pool, filename, image_width, image_height, data, sRGB ? TEXTYPE_SRGB_BGRA : TEXTYPE_BGRA, flags, miplevel, NULL);
 	Mem_Free(data);
 	return rt;
 }
@@ -1088,7 +1157,7 @@ void Image_FixTransparentPixels_f(void)
 		Con_Printf("Processing %s... ", filename);
 		Image_StripImageExtension(filename, buf, sizeof(buf));
 		dpsnprintf(outfilename, sizeof(outfilename), "fixtrans/%s.tga", buf);
-		if(!(data = loadimagepixelsbgra(filename, true, false)))
+		if(!(data = loadimagepixelsbgra(filename, true, false, false, NULL)))
 			return;
 		if((n = fixtransparentpixels(data, image_width, image_height)))
 		{
@@ -1102,9 +1171,12 @@ void Image_FixTransparentPixels_f(void)
 	FS_FreeSearch(search);
 }
 
-qboolean Image_WriteTGABGR_preflipped (const char *filename, int width, int height, const unsigned char *data, unsigned char *buffer)
+qboolean Image_WriteTGABGR_preflipped (const char *filename, int width, int height, const unsigned char *data)
 {
 	qboolean ret;
+	unsigned char buffer[18];
+	const void *buffers[2];
+	fs_offset_t sizes[2];
 
 	memset (buffer, 0, 18);
 	buffer[2] = 2;		// uncompressed type
@@ -1114,18 +1186,21 @@ qboolean Image_WriteTGABGR_preflipped (const char *filename, int width, int heig
 	buffer[15] = (height >> 8) & 0xFF;
 	buffer[16] = 24;	// pixel size
 
-	// swap rgb to bgr
-	memcpy(buffer + 18, data, width*height*3);
-	ret = FS_WriteFile (filename, buffer, width*height*3 + 18 );
+	buffers[0] = buffer;
+	sizes[0] = 18;
+	buffers[1] = data;
+	sizes[1] = width*height*3;
+	ret = FS_WriteFileInBlocks(filename, buffers, sizes, 2);
 
 	return ret;
 }
 
-void Image_WriteTGABGRA (const char *filename, int width, int height, const unsigned char *data)
+qboolean Image_WriteTGABGRA (const char *filename, int width, int height, const unsigned char *data)
 {
 	int y;
 	unsigned char *buffer, *out;
 	const unsigned char *in, *end;
+	qboolean ret;
 
 	buffer = (unsigned char *)Mem_Alloc(tempmempool, width*height*4 + 18);
 
@@ -1174,9 +1249,11 @@ void Image_WriteTGABGRA (const char *filename, int width, int height, const unsi
 			}
 		}
 	}
-	FS_WriteFile (filename, buffer, out - buffer);
+	ret = FS_WriteFile (filename, buffer, out - buffer);
 
 	Mem_Free(buffer);
+
+	return ret;
 }
 
 static void Image_Resample32LerpLine (const unsigned char *in, unsigned char *out, int inwidth, int outwidth)
@@ -1457,9 +1534,7 @@ void Image_HeightmapToNormalmap_BGRA(const unsigned char *inpixels, unsigned cha
 	const unsigned char *b, *row[3];
 	int p[5];
 	unsigned char *out;
-	float iwidth, iheight, ibumpscale, n[3];
-	iwidth = 1.0f / width;
-	iheight = 1.0f / height;
+	float ibumpscale, n[3];
 	ibumpscale = (255.0f * 6.0f) / bumpscale;
 	out = outpixels;
 	for (y = 0, y1 = height-1;y < height;y1 = y, y++)