FS#25 - Change sf::PostFx to a more general purpose pixel shader class (sf::Shader)

Updated the PostFx sample, renamed to Shader
Renamed all the static X::CanUseX() functions to X::IsAvailable() to make the API more consistent
Moved .def files from /build/VC200X to /src in CSFML
Minors fixes in CSFML

git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1258 4e206d99-4929-0410-ac5d-dfc041789085

dotnet/samples/bin/datas/shader/blur.sfx

@@ -0,0 +1,16 @@
+uniform sampler2D texture;
+uniform float offset;
+
+void main()
+{
+	vec2 offx = vec2(offset, 0.0);
+	vec2 offy = vec2(0.0, offset);
+
+	vec4 c0 = texture2D(texture, gl_TexCoord[0].xy);
+	vec4 c1 = texture2D(texture, gl_TexCoord[0].xy - offy);
+	vec4 c2 = texture2D(texture, gl_TexCoord[0].xy + offy);
+	vec4 c3 = texture2D(texture, gl_TexCoord[0].xy - offx);
+	vec4 c4 = texture2D(texture, gl_TexCoord[0].xy + offx);
+
+	gl_FragColor =  gl_Color * (c0 * 0.2 + c1 * 0.2 + c2 * 0.2 + c3 * 0.2 + c4 * 0.2);
+}

dotnet/samples/bin/datas/shader/colorize.sfx

@@ -0,0 +1,11 @@
+uniform sampler2D texture;
+uniform vec3 color;
+
+void main()
+{
+	vec4 pixel = texture2D(texture, gl_TexCoord[0].xy) * gl_Color;
+	float gray = pixel.r * 0.39 + pixel.g * 0.50 + pixel.b * 0.11;
+
+	gl_FragColor = vec4(gray * color, 1.0) * 0.6 + pixel * 0.4;
+	gl_FragColor.a = pixel.a;
+}

dotnet/samples/bin/datas/shader/fisheye.sfx

@@ -0,0 +1,13 @@
+uniform sampler2D texture;
+uniform vec2 mouse;
+
+void main()
+{
+	float len = distance(gl_TexCoord[0].xy, mouse) * 7.0;
+
+    vec2 coords = gl_TexCoord[0].xy;
+	if (len < 1.0)
+		coords += (gl_TexCoord[0].xy - mouse) * len;
+
+    gl_FragColor = texture2D(texture, coords) * gl_Color;	
+}

dotnet/samples/bin/datas/shader/nothing.sfx

@@ -0,0 +1,6 @@
+uniform sampler2D texture;
+
+void main()
+{
+	gl_FragColor = texture2D(texture, gl_TexCoord[0].xy) * gl_Color;
+}

dotnet/samples/bin/datas/shader/pixelate.sfx

@@ -0,0 +1,10 @@
+uniform sampler2D texture;
+uniform vec2 mouse;
+
+void main()
+{
+	float factor = 5 + 100 * length(mouse);
+	vec2 pos = floor(gl_TexCoord[0].xy * factor + 0.5) / factor;
+
+	gl_FragColor = texture2D(texture, pos) * gl_Color;	
+}

dotnet/samples/bin/datas/shader/wave.sfx

@@ -0,0 +1,12 @@
+uniform sampler2D texture;
+uniform sampler2D wave;
+uniform vec2 offset;
+
+void main()
+{
+	vec2 texoffset = texture2D(wave, (gl_TexCoord[0].xy * offset).xy);
+	texoffset -= vec2(0.5, 0.5);
+	texoffset *= 0.05;
+
+	gl_FragColor = texture2D(texture, gl_TexCoord[0].xy + texoffset) * gl_Color;
+}