add dissolve shader

Author: HeliumAnt

Data/Base.rte/Shaders/Dissolve.frag

@@ -0,0 +1,52 @@
+#version 130
+
+in vec2 textureUV;
+in vec4 vertexColor;
+
+out vec4 FragColor;
+
+uniform sampler2D rteTexture;
+uniform sampler2D rtePalette;
+uniform vec4 rteColor;
+
+// Pseudo random number generator. 
+float hash( vec2 a )
+{
+    return fract( sin( a.x * 3433.8 + a.y * 3843.98 ) * 45933.8 );
+}
+
+// Value noise courtesy of BigWingz 
+// check his youtube channel he has
+// a video of this one.
+// Succint version by FabriceNeyret
+float noise( vec2 U )
+{
+	vec2 id = floor( U );
+	U = fract( U );
+	U *= U * ( 3. - 2. * U );  
+
+	vec2 A = vec2( hash(id), hash(id + vec2(0,1)) );
+	vec2 B = vec2( hash(id + vec2(1,0)), hash(id + vec2(1,1)) );
+	vec2 C = mix( A, B, U.x);
+
+	return mix( C.x, C.y, U.y );
+}
+
+vec4 texture2DAA(sampler2D tex, vec2 uv) {
+	vec2 texsize = vec2(textureSize(tex, 0));
+	vec2 uv_texspace = uv * texsize;
+	vec2 seam = floor(uv_texspace + .5);
+	uv_texspace = (uv_texspace - seam) / fwidth(uv_texspace) + seam;
+	uv_texspace = clamp(uv_texspace, seam - .5, seam + .5);
+	return texture(tex, uv_texspace / texsize);
+}
+
+void main() {
+	if (noise(gl_FragCoord.xy + textureUV) < 0.5) {
+		discard;
+	}
+	float red = texture2D(rteTexture, textureUV).r;
+	vec4 color = texture2DAA(rtePalette, vec2(red * vertexColor.r, 0.0)) * vec4(rteColor.rgb, rteColor.a * vertexColor.a);
+
+	FragColor = color;
+}

Data/Base.rte/Shaders/Shaders.ini

@@ -17,3 +17,8 @@ AddShader = Shader
 	PresetName = Background
 	VertexShader = Base.rte/Shaders/Blit8.vert
 	FragmentShader = Base.rte/Shaders/Background.frag
+
+AddShader = Shader
+	PresetName = Dissolve
+	VertexShader = Base.rte/Shaders/Blit8.vert
+	FragmentShader = Base.rte/Shaders/Dissolve.frag