fixed: make sure lines are summed to a half3

git-svn-id: https://xbmc.svn.sourceforge.net/svnroot/xbmc/trunk@26953 568bbfeb-2a22-0410-94d2-cc84cf5bfa90

2 files changed, 16 insertions, 10 deletions

diff --git a/system/shaders/convolution-4x4.glsl b/system/shaders/convolution-4x4.glsl
index ee5e9f4d08..16d7b078ea 100644
--- a/system/shaders/convolution-4x4.glsl
+++ b/system/shaders/convolution-4x4.glsl
@@ -57,11 +57,14 @@ void main()
       ( 1.5 - xf) * stepx + gl_TexCoord[0].x,
       ( 2.5 - xf) * stepx + gl_TexCoord[0].x);
 
-  gl_FragColor.rgb  = line((-0.5 - yf) * stepy + gl_TexCoord[0].y, xpos, linetaps) * columntaps.r;
-  gl_FragColor.rgb += line(( 0.5 - yf) * stepy + gl_TexCoord[0].y, xpos, linetaps) * columntaps.g;
-  gl_FragColor.rgb += line(( 1.5 - yf) * stepy + gl_TexCoord[0].y, xpos, linetaps) * columntaps.b;
-  gl_FragColor.rgb += line(( 2.5 - yf) * stepy + gl_TexCoord[0].y, xpos, linetaps) * columntaps.a;
+  half3 output;
 
+  output  = line((-0.5 - yf) * stepy + gl_TexCoord[0].y, xpos, linetaps) * columntaps.r;
+  output += line(( 0.5 - yf) * stepy + gl_TexCoord[0].y, xpos, linetaps) * columntaps.g;
+  output += line(( 1.5 - yf) * stepy + gl_TexCoord[0].y, xpos, linetaps) * columntaps.b;
+  output += line(( 2.5 - yf) * stepy + gl_TexCoord[0].y, xpos, linetaps) * columntaps.a;
+
+  gl_FragColor.rgb = output;
   gl_FragColor.a = gl_Color.a;
 }
 
diff --git a/system/shaders/convolution-6x6.glsl b/system/shaders/convolution-6x6.glsl
index a98f60b367..914f6fc26e 100644
--- a/system/shaders/convolution-6x6.glsl
+++ b/system/shaders/convolution-6x6.glsl
@@ -64,13 +64,16 @@ void main()
       ( 2.5 - xf) * stepx + gl_TexCoord[0].x,
       ( 3.5 - xf) * stepx + gl_TexCoord[0].x);
 
-  gl_FragColor.rgb  = line((-1.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps1.r;
-  gl_FragColor.rgb += line((-0.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps2.r;
-  gl_FragColor.rgb += line(( 0.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps1.g;
-  gl_FragColor.rgb += line(( 1.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps2.g;
-  gl_FragColor.rgb += line(( 2.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps1.b;
-  gl_FragColor.rgb += line(( 3.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps2.b;
+  half3 output;
 
+  output  = line((-1.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps1.r;
+  output += line((-0.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps2.r;
+  output += line(( 0.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps1.g;
+  output += line(( 1.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps2.g;
+  output += line(( 2.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps1.b;
+  output += line(( 3.5 - yf) * stepy + gl_TexCoord[0].y, xpos1, xpos2, linetaps1, linetaps2) * columntaps2.b;
+
+  gl_FragColor.rgb = output;
   gl_FragColor.a = gl_Color.a;
 }