remove backbuf from internal struct's (unused in 2.5x)

source/blender/makesdna/DNA_scene_types.h

@@ -253,19 +253,12 @@ typedef struct RenderData {
 	 */
 	short yparts;
         
-	short winpos, planes, imtype, subimtype;
+	short planes, imtype, subimtype, quality;
-	
-	/** Mode bits:                                                           */
-	/* 0: Enable backbuffering for images                                    */
-	short bufflag;
-	 short quality;
 	
 	/**
 	 * Render to image editor, fullscreen or to new window.
 	 */
 	short displaymode;
-	
-	short rpad1, rpad2;
 
 	/**
 	 * Flags for render settings. Use bit-masking to access the settings.
@@ -322,11 +315,7 @@ typedef struct RenderData {
 	/**
 	 * Adjustment factors for the aspect ratio in the x direction, was a short in 2.45
 	 */
-	float xasp;
+	float xasp, yasp;
-	/**
-	 * Adjustment factors for the aspect ratio in the x direction, was a short in 2.45
-	 */
-	float yasp;
 
 	float frs_sec_base;
 	
@@ -349,7 +338,7 @@ typedef struct RenderData {
 	short bake_normal_space, bake_quad_split;
 	float bake_maxdist, bake_biasdist, bake_pad;
 
-	/* paths to backbufffer, output */
+	/* path to render output, can contain // suffix and #'s for current frame */
 	char pic[240];
 
 	/* stamps flags. */

source/blender/render/intern/include/render_types.h

@@ -214,7 +214,7 @@ struct Render
 	ListBase instancetable;
 	int totinstance;
 
-	struct Image *backbuf, *bakebuf;
+	struct Image *bakebuf;
 	
 	struct GHash *orco_hash;
 

source/blender/render/intern/source/convertblender.c

@@ -4665,7 +4665,6 @@ void RE_Database_Free(Render *re)
 	re->totvlak=re->totvert=re->totstrand=re->totlamp=re->tothalo= 0;
 	re->i.convertdone= 0;
 
-	re->backbuf= NULL;
 	re->bakebuf= NULL;
 
 	if(re->scene)

source/blender/render/intern/source/envmap.c

@@ -149,7 +149,6 @@ static Render *envmap_render_copy(Render *re, EnvMap *env)
 	envre->r.layers.first= envre->r.layers.last= NULL;
 	envre->r.filtertype= 0;
 	envre->r.xparts= envre->r.yparts= 2;
-	envre->r.bufflag= 0;
 	envre->r.size= 100;
 	envre->r.yasp= envre->r.xasp= 1;
 	

source/blender/render/intern/source/pipeline.c

@@ -2065,35 +2065,6 @@ static void do_render_fields_3d(Render *re)
 	re->display_draw(re->ddh, re->result, NULL);
 }
 
-static void load_backbuffer(Render *re)
-{
-	if(re->r.alphamode == R_ADDSKY) {
-		ImBuf *ibuf;
-		char name[256];
-
-		BLI_path_abs(name, re->main->name);
-		BLI_path_frame(name, re->r.cfra, 0);
-		
-		if(re->backbuf) {
-			re->backbuf->id.us--;
-			if(re->backbuf->id.us<1)
-				BKE_image_signal(re->backbuf, NULL, IMA_SIGNAL_RELOAD);
-		}
-		
-		re->backbuf= BKE_add_image_file(name);
-		ibuf= BKE_image_get_ibuf(re->backbuf, NULL);
-		if(ibuf==NULL) {
-			// error() doesnt work with render window open
-			//error("No backbuf there!");
-			printf("Error: No backbuf %s\n", name);
-		}
-		else {
-			if (re->r.mode & R_FIELDS)
-				image_de_interlace(re->backbuf, re->r.mode & R_ODDFIELD);
-		}
-	}
-}
-
 /* main render routine, no compositing */
 static void do_render_fields_blur_3d(Render *re)
 {
@@ -2104,10 +2075,6 @@ static void do_render_fields_blur_3d(Render *re)
 		G.afbreek= 1;
 		return;
 	}
-	
-	/* backbuffer initialize */
-	if(re->r.bufflag & 1)
-		load_backbuffer(re);
 
 	/* now use renderdata and camera to set viewplane */
 	RE_SetCamera(re, camera);

source/blender/render/intern/source/pixelshading.c

@@ -502,21 +502,6 @@ int shadeHaloFloat(HaloRen *har,  float *col, int zz,
 
 /* ------------------------------------------------------------------------- */
 
-static void fillBackgroundImage(float *collector, float fx, float fy)
-{
-	collector[0] = 0.0; 
-	collector[1] = 0.0; 
-	collector[2] = 0.0; 
-	collector[3] = 0.0; 
-	
-	if(R.backbuf) {
-		float dx= 1.0f/(float)R.winx;
-		float dy= 1.0f/(float)R.winy;
-		
-		image_sample(R.backbuf, fx*dx, fy*dy, dx, dy, collector);
-	}
-}
-
 /* Only view vector is important here. Result goes to colf[3] */
 void shadeSkyView(float *colf, float *rco, float *view, float *dxyview, short thread)
 {
@@ -626,18 +611,14 @@ void shadeSkyPixel(float *collector, float fx, float fy, short thread)
 
 	float fac;
 
-	/* 1. Do a backbuffer image: */ 
+	if((R.wrld.skytype & (WO_SKYBLEND+WO_SKYTEX))==0) {
-	if(R.r.bufflag & 1) {
+		/* 1. solid color */
-		fillBackgroundImage(collector, fx, fy);
-	} 
-	else if((R.wrld.skytype & (WO_SKYBLEND+WO_SKYTEX))==0) {
-		/* 2. solid color */
 		VECCOPY(collector, &R.wrld.horr);
 
 		collector[3] = 0.0f;
 	} 
 	else {
-		/* 3. */
+		/* 2. */
 
 		/* This one true because of the context of this routine  */
 		if(R.wrld.skytype & WO_SKYPAPER) {