sobel: drop unused single pass sobel shader

Drop unused sobel shader, if anyone still needs it, git log is your
friend.

2 files changed, 0 insertions, 36 deletions

diff --git a/gst/gl/effects/gstgleffectssources.c b/gst/gl/effects/gstgleffectssources.c
index 20c4ba5..f14c391 100644
--- a/gst/gl/effects/gstgleffectssources.c
+++ b/gst/gl/effects/gstgleffectssources.c
@@ -273,41 +273,6 @@ const gchar *luma_threshold_fragment_source =
   "  gl_FragColor = vec4 (vec3 (smoothstep (0.30, 0.50, luma)), color.a);"
   "}";
 
-const gchar *sobel_fragment_source =
-  "#extension GL_ARB_texture_rectangle : enable\n"
-  "uniform sampler2DRect tex;"
-  "uniform float hkern[9];"
-  "uniform float vkern[9];"
-  "uniform bool invert;"
-  "void main () {"
-  "  vec2 offset[9];"
-  "  offset[0] = vec2(-1.0,-1.0);"
-  "  offset[1] = vec2( 0.0,-1.0);"
-  "  offset[2] = vec2( 1.0,-1.0);"
-  "  offset[3] = vec2(-1.0, 0.0);"
-  "  offset[4] = vec2( 0.0, 0.0);"
-  "  offset[5] = vec2( 1.0, 0.0);"
-  "  offset[6] = vec2(-1.0, 1.0);"
-  "  offset[7] = vec2( 0.0, 1.0);"
-  "  offset[8] = vec2( 1.0, 1.0);"
-  "  vec2 texturecoord = gl_TexCoord[0].st;"
-  "  int i;"
-  "  float luma;"
-  "  float gx = 0.0;"
-  "  float gy = 0.0 ;"
-  "  for (i = 0; i < 9; i++) { "
-  "    if(hkern[i] != 0.0 || vkern[i] != 0.0) {"
-  "      vec4 neighbor = texture2DRect(tex, texturecoord + vec2(offset[i])); "
-  "      luma = dot(neighbor, vec4(0.2125, 0.7154, 0.0721, neighbor.a));"
-  "      gx += luma * hkern[i]; "
-  "      gy += luma * vkern[i]; "
-  "    }"
-  "  }"
-  "  float g = sqrt(gx*gx + gy*gy);"
-  "  if (invert) g = 1.0 - g;"
-  "  gl_FragColor = vec4(vec3(g), 1.0);"
-  "}";
-
 const gchar *sep_sobel_length_fragment_source =
   "#extension GL_ARB_texture_rectangle : enable\n"
   "uniform sampler2DRect tex;"
diff --git a/gst/gl/effects/gstgleffectssources.h b/gst/gl/effects/gstgleffectssources.h
index eebb87d..b442962 100644
--- a/gst/gl/effects/gstgleffectssources.h
+++ b/gst/gl/effects/gstgleffectssources.h
@@ -32,7 +32,6 @@ extern const gchar *twirl_fragment_source;
 extern const gchar *bulge_fragment_source;
 extern const gchar *square_fragment_source;
 extern const gchar *luma_threshold_fragment_source;
-extern const gchar *sobel_fragment_source;
 extern const gchar *sep_sobel_length_fragment_source;
 extern const gchar *desaturate_fragment_source;
 extern const gchar *sep_sobel_hconv3_fragment_source;