npcs and tutorial stuff

[carveJwlIkooP6JGAAIwe30JlM.git] / shaders / depth_compare.glsl

diff --git a/shaders/depth_compare.glsl b/shaders/depth_compare.glsl
index 5e02144f17b8a18b8f09b7537a4e1cfa8e006966..c03b8f76e7a7b20a69fa1cba7020a5ba6eba793a 100644 (file)
--- a/shaders/depth_compare.glsl
+++ b/shaders/depth_compare.glsl
@@ -1,15 +1,18 @@
 uniform sampler2D uTexSceneDepth;
 uniform vec3 uInverseRatioDepth;
 uniform vec3 uInverseRatioMain;
-uniform bool uDepthCompare;
+uniform int uDepthMode;
+uniform float uDitherCutoff;
 
 float linear_depth( float depth, float near, float far ) {
    float z = depth * 2.0 - 1.0;
    return (2.0 * near * far) / (far + near - z * (far - near));        
 }
 
-void depth_compare_dither(){
-   if( uDepthCompare ){
+void depth_compare_dither()
+{
+   if( uDepthMode == 1 )
+   {
       vec2 back_coord = gl_FragCoord.xy * uInverseRatioMain.xy 
                                         * uInverseRatioDepth.xy;
       float back_depth = texture( uTexSceneDepth, back_coord ).r;
@@ -25,4 +28,12 @@ void depth_compare_dither(){
       if( step(0.0,diff)+dither<0.3 )
          discard;
    }
+
+   if( uDepthMode == 2 )
+   {
+      vec2 ssuv = gl_FragCoord.xy;
+      vec3 vDither = vec3( dot( vec2( 171.0, 231.0 ), ssuv) );
+      float dither = fract( vDither.g / 71.0 );
+      if( dither<uDitherCutoff ) discard;
+   }
 }