Merge pull request #4142 from DanyalZia/patch-21

Add two more shaders just for fun.

assets/shaders/Cartoon shader.fsh

@@ -0,0 +1,43 @@
+//Modified to use in PPSSPP, Grabbed from:
+//http://forums.ngemu.com/showthread.php?t=76098
+
+// Advanced Cartoon shader I
+// by guest(r) (guest.r@gmail.com)
+// license: GNU-GPL
+
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+const float bb = 0.5; // effects black border sensitivity; from 0.0 to 1.0
+
+uniform sampler2D sampler0;
+
+void main()
+{
+	vec3 c00 = texture2D(sampler0, gl_TexCoord[5].xy).xyz; 
+	vec3 c10 = texture2D(sampler0, gl_TexCoord[1].xy).xyz; 
+	vec3 c20 = texture2D(sampler0, gl_TexCoord[2].zw).xyz; 
+	vec3 c01 = texture2D(sampler0, gl_TexCoord[3].xy).xyz; 
+	vec3 c11 = texture2D(sampler0, gl_TexCoord[0].xy).xyz; 
+	vec3 c21 = texture2D(sampler0, gl_TexCoord[4].xy).xyz; 
+	vec3 c02 = texture2D(sampler0, gl_TexCoord[1].zw).xyz; 
+	vec3 c12 = texture2D(sampler0, gl_TexCoord[2].xy).xyz; 
+	vec3 c22 = texture2D(sampler0, gl_TexCoord[6].xy).xyz; 
+	vec3 dt = vec3(1.0,1.0,1.0); 
+
+	float d1=dot(abs(c00-c22),dt);
+	float d2=dot(abs(c20-c02),dt);
+	float hl=dot(abs(c01-c21),dt);
+	float vl=dot(abs(c10-c12),dt);
+	float d = bb*(d1+d2+hl+vl)/(dot(c11,dt)+0.15);
+
+	float lc = 4.0*length(c11);
+	float f = fract(lc); f*=f;
+	lc = 0.25*(floor(lc) + f*f)+0.05;
+	c11 = 4.0*normalize(c11); 
+	vec3 frct = fract(c11); frct*=frct;
+	c11 = floor(c11)+ 0.05*dt + frct*frct;
+	gl_FragColor.xyz = 0.25*lc*(1.1-d*sqrt(d))*c11;
+}

assets/shaders/Cartoon shader.vsh

@@ -0,0 +1,27 @@
+attribute vec4 a_position;
+attribute vec2 a_texcoord0;
+uniform mat4 u_viewproj;
+
+float size = 2.0; //edge detection offset, 2.0-5.0 suitable range
+
+void main()
+
+{
+float x = (0.125/480.0)*size;
+float y = (0.25/272.0)*size;
+vec2 dg1 = vec2( x,y);
+vec2 dg2 = vec2(-x,y);
+vec2 dx  = vec2(x,0.0);
+vec2 dy  = vec2(0.0,y);
+gl_Position = u_viewproj * a_position;
+gl_TexCoord[0]=a_texcoord0.xyxy;
+gl_TexCoord[1].xy = gl_TexCoord[0].xy - dy;
+gl_TexCoord[2].xy = gl_TexCoord[0].xy + dy;
+gl_TexCoord[3].xy = gl_TexCoord[0].xy - dx;
+gl_TexCoord[4].xy = gl_TexCoord[0].xy + dx;
+gl_TexCoord[5].xy = gl_TexCoord[0].xy - dg1;
+gl_TexCoord[6].xy = gl_TexCoord[0].xy + dg1;
+gl_TexCoord[1].zw = gl_TexCoord[0].xy - dg2;
+gl_TexCoord[2].zw = gl_TexCoord[0].xy + dg2;
+
+}

assets/shaders/Scanlines.fsh

@@ -0,0 +1,22 @@
+//Simple Scanlines shader
+
+
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+uniform sampler2D sampler0;
+float offset = 1.0;
+float frequency = 170.0;
+
+varying vec2 v_texcoord0;
+
+void main()
+{
+    float pos0 = (v_texcoord0.y + offset) * frequency;
+    float pos1 = cos((fract( pos0 ) - 0.5)*3.14);
+    vec4 pel = texture2D( sampler0, v_texcoord0 );
+
+    gl_FragColor = mix(vec4(0,0,0,0), pel, pos1);
+}

assets/shaders/defaultshaders.ini

@@ -22,4 +22,12 @@ Vertex=fxaa.vsh
 Name=Inverse Colors
 Author=Henrik
 Fragment=inversecolors.fsh
-Vertex=fxaa.vsh
+Vertex=fxaa.vsh
+[Scanlines]
+Name=Scanlines
+Fragment=Scanlines.fsh
+Vertex=fxaa.vsh
+[Cartoon]
+Name=Advance Cartoon shader
+Fragment=Cartoon shader.fsh
+Vertex=Cartoon shader.vsh