ref_soft: Separate buffer for transparent textures

r_draw.c

@@ -70,6 +70,8 @@ void R_DrawStretchPicImplementation (int x, int y, int w, int h, int s1, int t1,
 	unsigned int				height;
 	unsigned int				f, fstep;
 	int				skip;
+	qboolean transparent = false;
+	pixel_t *buffer;
 
 	if( x < 0 )
 	{
@@ -104,6 +106,14 @@ void R_DrawStretchPicImplementation (int x, int y, int w, int h, int s1, int t1,
 
 	dest = vid.buffer + y * vid.rowbytes + x;
 
+	if( pic->alpha_pixels )
+	{
+		buffer = pic->alpha_pixels;
+		transparent = true;
+	}
+	else
+		buffer = pic->pixels[0];
+
 
 	#pragma omp parallel for schedule(static)
 	for (v=0 ; v<height ; v++)
@@ -112,7 +122,7 @@ void R_DrawStretchPicImplementation (int x, int y, int w, int h, int s1, int t1,
 		pixel_t			*dest = vid.buffer + (y + v) * vid.rowbytes + x;
 #endif
 		sv = (skip + v)*(t2-t1)/h + t1;
-		source = pic->pixels[0] + sv*pic->width + s1;
+		source = buffer + sv*pic->width + s1;
 		{
 			f = 0;
 			fstep = s2*0x10000/w;
@@ -137,7 +147,7 @@ void R_DrawStretchPicImplementation (int x, int y, int w, int h, int s1, int t1,
 				int alpha = vid.alpha;
 				f += fstep;
 
-				if( pic->transparent )
+				if( transparent )
 				{
 					alpha &= src >> 16 - 3;
 					src = src << 3;

r_image.c

@@ -530,9 +530,9 @@ static qboolean GL_UploadTexture( image_t *tex, rgbdata_t *pic )
 		size = GL_CalcImageSize( pic->type, width, height, tex->depth );
 		//GL_TextureImageRAW( tex, i, j, width, height, tex->depth, pic->type, data );
 		tex->pixels[j] = Mem_Calloc( r_temppool, width * height * sizeof(pixel_t) + 64 );
+		if( j == 0 &&  tex->flags & TF_HAS_ALPHA )
+			tex->alpha_pixels = Mem_Calloc( r_temppool, width * height * sizeof(pixel_t) + 64 );
 		int x, y;
-		if( tex->flags & TF_HAS_ALPHA )
-			tex->transparent = true;
 
 		for(i = 0; i < height * width; i++ )
 		{
@@ -554,10 +554,10 @@ static qboolean GL_UploadTexture( image_t *tex, rgbdata_t *pic )
 				minor = MOVE_BIT(r,1,5) | MOVE_BIT(r,0,2) | MOVE_BIT(g,2,7) | MOVE_BIT(g,1,4) | MOVE_BIT(g,0,1) | MOVE_BIT(b,2,6)| MOVE_BIT(b,1,3)|MOVE_BIT(b,0,0);
 
 				tex->pixels[j][i] = major << 8 | (minor & 0xFF);
-				if( tex->transparent )
+				if( j == 0 && tex->alpha_pixels )
 				{
 					unsigned int alpha = (pic->buffer[i * 4 + 3] * 8 / 256) << (16 - 3);
-					tex->pixels[j][i] = (tex->pixels[j][i] >> 3) | alpha;
+					tex->alpha_pixels[i] = (tex->pixels[j][i] >> 3) | alpha;
 				}
 
 		}

r_local.h

@@ -358,8 +358,9 @@ typedef struct image_s
 	float		yscale;
 
 	imagetype_t     type;
-	qboolean transparent;
 	pixel_t		*pixels[4];				// mip levels
+	pixel_t		*alpha_pixels;				// mip levels
+
 
 	int		servercount;
 	uint		hashValue;

r_surf.c

@@ -180,7 +180,6 @@ texture_t *R_TextureAnimation( msurface_t *s )
 	return base;
 }
 
-static char r_transtexture;
 /*
 ===============
 R_DrawSurface
@@ -200,7 +199,6 @@ void R_DrawSurface (void)
 	surfrowbytes = r_drawsurf.rowbytes;
 
 	mt = r_drawsurf.image;
-	r_transtexture = mt->transparent;
 	
 	r_source = mt->pixels[r_drawsurf.surfmip];
 	
@@ -277,7 +275,6 @@ void R_DrawSurfaceBlock8_mip0 (void)
 
 	psource = pbasesource;
 	prowdest = prowdestbase;
-	char transtexture = r_transtexture;
 
 	for (v=0 ; v<r_numvblocks ; v++)
 	{
@@ -299,8 +296,6 @@ void R_DrawSurfaceBlock8_mip0 (void)
 			for (b=15; b>=0; b--)
 			{
 				pix = psource[b];
-				if( transtexture )
-					pix = pix << 3;
 				prowdest[b] = pix;
 						//((unsigned char *)vid.colormap)
 						//[(light & 0xFF00) + pix];
@@ -328,7 +323,6 @@ void R_DrawSurfaceBlock8_mip1 (void)
 {
 	int				v, i, b, lightstep, lighttemp, light;
 	pixel_t	pix, *psource, *prowdest;
-	char transtexture = r_transtexture;
 
 	psource = pbasesource;
 	prowdest = prowdestbase;
@@ -353,8 +347,6 @@ void R_DrawSurfaceBlock8_mip1 (void)
 			for (b=7; b>=0; b--)
 			{
 				pix = psource[b];
-				if( transtexture )
-					pix = pix << 3;
 				prowdest[b] = pix;
 						//((unsigned char *)vid.colormap)
 						//[(light & 0xFF00) + pix];
@@ -382,7 +374,6 @@ void R_DrawSurfaceBlock8_mip2 (void)
 {
 	int				v, i, b, lightstep, lighttemp, light;
 	pixel_t	pix, *psource, *prowdest;
-	char transtexture = r_transtexture;
 
 	psource = pbasesource;
 	prowdest = prowdestbase;
@@ -407,8 +398,6 @@ void R_DrawSurfaceBlock8_mip2 (void)
 			for (b=3; b>=0; b--)
 			{
 				pix = psource[b];
-				if( transtexture )
-					pix = pix << 3;
 				prowdest[b] = pix;
 						//((unsigned char *)vid.colormap)
 						//[(light & 0xFF00) + pix];
@@ -436,7 +425,6 @@ void R_DrawSurfaceBlock8_mip3 (void)
 {
 	int				v, i, b, lightstep, lighttemp, light;
 	pixel_t	pix, *psource, *prowdest;
-	char transtexture = r_transtexture;
 
 	psource = pbasesource;
 	prowdest = prowdestbase;
@@ -461,8 +449,6 @@ void R_DrawSurfaceBlock8_mip3 (void)
 			for (b=1; b>=0; b--)
 			{
 				pix = psource[b];
-				if( transtexture )
-					pix = pix << 3;
 				prowdest[b] = pix;
 						//((unsigned char *)vid.colormap)
 						//[(light & 0xFF00) + pix];