Put depth in 0..1; evidently even fp32 depth is clamped in the ARB version.

[nageru] / splat.frag

diff --git a/splat.frag b/splat.frag
index c06667b1b41a9c7fc67bb633607d6826efd1e403..7b6875a131164f89d159b8417b4aa98bbd52e657 100644 (file)
--- a/splat.frag
+++ b/splat.frag
@@ -16,5 +16,5 @@ void main()
        vec3 I_0 = texture(image0_tex, image_pos + I_0_check_offset).rgb;
        vec3 I_1 = texture(image1_tex, image_pos + I_1_check_offset).rgb;
        vec3 diff = abs(I_1 - I_0);
-       gl_FragDepth = diff.x + diff.y + diff.z;
+       gl_FragDepth = 0.125 * (diff.x + diff.y + diff.z);  // Make sure we stay well under the 1.0 maximum.
 }