X-Git-Url: http://git.cinelerra-gg.org/git/?a=blobdiff_plain;f=cinelerra-5.1%2Fcinelerra%2Foverlaysample.C;h=a4b485d7dfa77768a7f8249a535e9ac5f598c79e;hb=163923953049a5be18026801eba4fcec8bc87c07;hp=490715951c60f537663bf563bde3e8d9c66d8b16;hpb=93d60cc0fdf746cc03b4d7a9e45744c2c424439b;p=goodguy%2Fhistory.git

diff --git a/cinelerra-5.1/cinelerra/overlaysample.C b/cinelerra-5.1/cinelerra/overlaysample.C
index 49071595..a4b485d7 100644
--- a/cinelerra-5.1/cinelerra/overlaysample.C
+++ b/cinelerra-5.1/cinelerra/overlaysample.C
@@ -26,28 +26,22 @@
 				float racc=0.f, gacc=0.f, bacc=0.f, aacc=0.f; \
 				int ki = lookup_sk[j], x = lookup_sx0[j]; \
 				type *ip = input + x * components; \
-				float wacc = 0, awacc = 0; \
-				while(x++ < lookup_sx1[j]) { \
+				while(x < lookup_sx1[j]) { \
 					float kv = k[abs(ki >> INDEX_FRACTION)]; \
 					/* handle fractional pixels on edges of input */ \
 					if(x == i1i) kv *= i1f; \
-					if(x + 1 == i2i) kv *= i2f; \
-					if( components == 4 ) { awacc += kv;  kv *= ip[3]; } \
-					wacc += kv; \
+					if(++x == i2i) kv *= i2f; \
 					racc += kv * *ip++; \
 					gacc += kv * (*ip++ - ofs); \
 					bacc += kv * (*ip++ - ofs); \
-					if( components == 4 ) { aacc += kv;  ++ip; } \
+					if( components == 4 ) { aacc += kv * *ip++; } \
 					ki += kd; \
 				} \
-				if(wacc > 0.) wacc = 1. / wacc; \
+				float wacc = lookup_wacc[j]; \
 				*tempp++ = racc * wacc; \
 				*tempp++ = gacc * wacc; \
 				*tempp++ = bacc * wacc; \
-				if( components == 4 ) { \
-					if(awacc > 0.) awacc = 1. / awacc; \
-				 	*tempp++ = aacc * awacc; \
-				} \
+				if( components == 4 ) { *tempp++ = aacc * wacc; } \
 			} \
 		} \
  \
@@ -147,7 +141,7 @@ void SampleUnit::process_package(LoadPackage *package)
 	int *lookup_sx0 = engine->lookup_sx0;
 	int *lookup_sx1 = engine->lookup_sx1;
 	int *lookup_sk = engine->lookup_sk;
-	//float *lookup_wacc = engine->lookup_wacc;
+	float *lookup_wacc = engine->lookup_wacc;
 
 	BLEND_SWITCH(XBLEND_SAMPLE);
 }
@@ -243,12 +237,8 @@ void SampleEngine::init_packages()
 				 * the contribution of the first and last input pixel (if
 				 * fractional) are linearly weighted by the fraction
 				 */
-				if(j == i1i)
-					wacc += k[abs(kv)] * i1f;
-				else if(j + 1 == i2i)
-					wacc += k[abs(kv)] * i2f;
-				else
-					wacc += k[abs(kv)];
+				float fk = k[abs(kv)];
+				wacc += j == i1i ? fk * i1f : j+1 == i2i ? fk * i2f : fk;
 
 				/* this is where we clip the kernel convolution to the source plane */
 				if(j >= 0 && j < iw) {