First commit

shaders/old/fxaa.shader

@@ -0,0 +1,137 @@
+	#version 300 es
+ 
+    in vec3 position;
+    in vec2 uv;
+	
+	
+	uniform vec2 res;
+    uniform mat4 viewProjection;
+
+    out vec2 textureCoord;
+	out vec2 v_rgbNW;
+	out vec2 v_rgbNE;
+	out vec2 v_rgbSW;
+	out vec2 v_rgbSE;
+	out vec2 v_rgbM;
+
+    void main(void) {
+        textureCoord = uv;
+		
+		mediump vec2 fragCoord = textureCoord * res;
+
+		vec2 inverseVP = 1.0 / res.xy;
+		mediump vec2 v_rgbNW = (fragCoord + vec2(-1.0, -1.0)) * inverseVP;
+		mediump vec2 v_rgbNE = (fragCoord + vec2(1.0, -1.0)) * inverseVP;
+		mediump vec2 v_rgbSW = (fragCoord + vec2(-1.0, 1.0)) * inverseVP;
+		mediump vec2 v_rgbSE = (fragCoord + vec2(1.0, 1.0)) * inverseVP;
+		mediump vec2 v_rgbM = vec2(fragCoord * inverseVP);
+		
+		gl_Position = viewProjection * vec4(position, 1.0);
+    }
+	
+	// #keplerEngine - Split
+	
+	#version 300 es
+	
+	precision highp float;
+
+	uniform sampler2D deferredSampler;
+	
+	uniform vec2 res;
+	uniform vec2 inverseScreenSize;
+	
+	
+	in vec2 textureCoord;
+	in vec2 v_rgbNW;
+	in vec2 v_rgbNE;
+	in vec2 v_rgbSW;
+	in vec2 v_rgbSE;
+	in vec2 v_rgbM;
+	
+
+	out vec4 fragmentColor;
+
+#ifndef FXAA_REDUCE_MIN
+    #define FXAA_REDUCE_MIN   (1.0/ 128.0)
+#endif
+#ifndef FXAA_REDUCE_MUL
+    #define FXAA_REDUCE_MUL   (1.0 / 8.0)
+#endif
+#ifndef FXAA_SPAN_MAX
+    #define FXAA_SPAN_MAX     8.0
+#endif
+
+//optimized version for mobile, where dependent 
+//texture reads can be a bottleneck
+vec4 fxaa(sampler2D tex, vec2 fragCoord, vec2 resolution,
+            vec2 v_rgbNW, vec2 v_rgbNE, 
+            vec2 v_rgbSW, vec2 v_rgbSE, 
+            vec2 v_rgbM) {
+    vec4 color;
+    mediump vec2 inverseVP = vec2(1.0 / resolution.x, 1.0 / resolution.y);
+    vec3 rgbNW = texture(tex, v_rgbNW).xyz;
+    vec3 rgbNE = texture(tex, v_rgbNE).xyz;
+    vec3 rgbSW = texture(tex, v_rgbSW).xyz;
+    vec3 rgbSE = texture(tex, v_rgbSE).xyz;
+    vec4 texColor = texture(tex, v_rgbM);
+    vec3 rgbM  = texColor.xyz;
+    vec3 luma = vec3(0.299, 0.587, 0.114);
+    float lumaNW = dot(rgbNW, luma);
+    float lumaNE = dot(rgbNE, luma);
+    float lumaSW = dot(rgbSW, luma);
+    float lumaSE = dot(rgbSE, luma);
+    float lumaM  = dot(rgbM,  luma);
+    float lumaMin = min(lumaM, min(min(lumaNW, lumaNE), min(lumaSW, lumaSE)));
+    float lumaMax = max(lumaM, max(max(lumaNW, lumaNE), max(lumaSW, lumaSE)));
+    
+    mediump vec2 dir;
+    dir.x = -((lumaNW + lumaNE) - (lumaSW + lumaSE));
+    dir.y =  ((lumaNW + lumaSW) - (lumaNE + lumaSE));
+    
+    float dirReduce = max((lumaNW + lumaNE + lumaSW + lumaSE) *
+                          (0.25 * FXAA_REDUCE_MUL), FXAA_REDUCE_MIN);
+    
+    float rcpDirMin = 1.0 / (min(abs(dir.x), abs(dir.y)) + dirReduce);
+    dir = min(vec2(FXAA_SPAN_MAX, FXAA_SPAN_MAX),
+              max(vec2(-FXAA_SPAN_MAX, -FXAA_SPAN_MAX),
+              dir * rcpDirMin)) * inverseVP;
+    
+    vec3 rgbA = 0.5 * (
+        texture(tex, fragCoord * inverseVP + dir * (1.0 / 3.0 - 0.5)).xyz +
+        texture(tex, fragCoord * inverseVP + dir * (2.0 / 3.0 - 0.5)).xyz);
+    vec3 rgbB = rgbA * 0.5 + 0.25 * (
+        texture(tex, fragCoord * inverseVP + dir * -0.5).xyz +
+        texture(tex, fragCoord * inverseVP + dir * 0.5).xyz);
+
+    float lumaB = dot(rgbB, luma);
+    if ((lumaB < lumaMin) || (lumaB > lumaMax))
+        color = vec4(rgbA, texColor.a);
+    else
+        color = vec4(rgbB, texColor.a);
+    return color;
+}
+
+
+
+
+void main() {
+
+
+	
+
+	
+	//compute FXAA
+	
+//
+	mediump vec2 fragCoord = textureCoord * res;
+
+	fragmentColor = fxaa(deferredSampler, fragCoord, res, v_rgbNW, v_rgbNE, v_rgbSW, v_rgbSE, v_rgbM);
+	//fragmentColor = texture(deferredSampler, textureCoord);
+	
+	fragmentColor.w = 1.0;
+}
+
+
+	
+
+