From 2a867a0434f9c0f5c23da5249e5149623cac909c Mon Sep 17 00:00:00 2001 From: chai Date: Sun, 30 Dec 2018 12:40:20 +0800 Subject: =?UTF-8?q?*=E6=B7=BB=E5=8A=A0sample?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- samples/post-processing/shaders/sobel.jsl | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 samples/post-processing/shaders/sobel.jsl (limited to 'samples/post-processing/shaders/sobel.jsl') diff --git a/samples/post-processing/shaders/sobel.jsl b/samples/post-processing/shaders/sobel.jsl new file mode 100644 index 0000000..7700dee --- /dev/null +++ b/samples/post-processing/shaders/sobel.jsl @@ -0,0 +1,30 @@ +#VERTEX_SHADER +Vertex vert(Vertex v) +{ + return v; +} +#END_VERTEX_SHADER +#FRAGMENT_SHADER +Color frag(Color col, Texture texture, Vertex v) +{ + float x = 1.0 / jin_RenderTargetSize.x; + float y = 1.0 / jin_RenderTargetSize.y; + vec4 horizEdge = vec4( 0.0 ); + horizEdge -= texture2D( texture, vec2( v.uv.x - x, v.uv.y - y ) ) * 1.0; + horizEdge -= texture2D( texture, vec2( v.uv.x - x, v.uv.y ) ) * 2.0; + horizEdge -= texture2D( texture, vec2( v.uv.x - x, v.uv.y + y ) ) * 1.0; + horizEdge += texture2D( texture, vec2( v.uv.x + x, v.uv.y - y ) ) * 1.0; + horizEdge += texture2D( texture, vec2( v.uv.x + x, v.uv.y ) ) * 2.0; + horizEdge += texture2D( texture, vec2( v.uv.x + x, v.uv.y + y ) ) * 1.0; + vec4 vertEdge = vec4( 0.0 ); + vertEdge -= texture2D( texture, vec2( v.uv.x - x, v.uv.y - y ) ) * 1.0; + vertEdge -= texture2D( texture, vec2( v.uv.x , v.uv.y - y ) ) * 2.0; + vertEdge -= texture2D( texture, vec2( v.uv.x + x, v.uv.y - y ) ) * 1.0; + vertEdge += texture2D( texture, vec2( v.uv.x - x, v.uv.y + y ) ) * 1.0; + vertEdge += texture2D( texture, vec2( v.uv.x , v.uv.y + y ) ) * 2.0; + vertEdge += texture2D( texture, vec2( v.uv.x + x, v.uv.y + y ) ) * 1.0; + vec3 edge = sqrt((horizEdge.rgb * horizEdge.rgb) + (vertEdge.rgb * vertEdge.rgb)); + + return vec4(edge, texture2D(texture, v.uv.xy).a); +} +#END_FRAGMENT_SHADER \ No newline at end of file -- cgit v1.1-26-g67d0