From 958afaa7a7bfb1217bbffee3fe562f21901277ac Mon Sep 17 00:00:00 2001 From: Rye Mutt Date: Tue, 27 Aug 2024 22:47:32 -0400 Subject: Integrate SMAA and rework post process chain for better visual quality Add SMAA buffer generation passes Add quality levels for both FXAA and SMAA Separate gamma correction and tonemapping for effects that require linear-but-tonemapped inputs Move application of noise to final render pass to screen to avoid damaging other post process effects --- .../class1/deferred/postDeferredNoDoFF.glsl | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) (limited to 'indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl') diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl index 07384ebe9b..32b0a1ac8e 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl @@ -33,10 +33,57 @@ uniform sampler2D depthMap; uniform vec2 screen_res; in vec2 vary_fragcoord; +//================================= +// borrowed noise from: +// +// By Morgan McGuire @morgan3d, http://graphicscodex.com +// +float hash(float n) { return fract(sin(n) * 1e4); } +float hash(vec2 p) { return fract(1e4 * sin(17.0 * p.x + p.y * 0.1) * (0.1 + abs(sin(p.y * 13.0 + p.x)))); } + +float noise(float x) { + float i = floor(x); + float f = fract(x); + float u = f * f * (3.0 - 2.0 * f); + return mix(hash(i), hash(i + 1.0), u); +} + +float noise(vec2 x) { + vec2 i = floor(x); + vec2 f = fract(x); + + // Four corners in 2D of a tile + float a = hash(i); + float b = hash(i + vec2(1.0, 0.0)); + float c = hash(i + vec2(0.0, 1.0)); + float d = hash(i + vec2(1.0, 1.0)); + + // Simple 2D lerp using smoothstep envelope between the values. + // return vec3(mix(mix(a, b, smoothstep(0.0, 1.0, f.x)), + // mix(c, d, smoothstep(0.0, 1.0, f.x)), + // smoothstep(0.0, 1.0, f.y))); + + // Same code, with the clamps in smoothstep and common subexpressions + // optimized away. + vec2 u = f * f * (3.0 - 2.0 * f); + return mix(a, b, u.x) + (c - a) * u.y * (1.0 - u.x) + (d - b) * u.x * u.y; +} + +//============================= + + + void main() { vec4 diff = texture(diffuseRect, vary_fragcoord.xy); +#ifdef HAS_NOISE + vec2 tc = vary_fragcoord.xy*screen_res*4.0; + vec3 seed = (diff.rgb+vec3(1.0))*vec3(tc.xy, tc.x+tc.y); + vec3 nz = vec3(noise(seed.rg), noise(seed.gb), noise(seed.rb)); + diff.rgb += nz*0.003; +#endif + frag_color = diff; gl_FragDepth = texture(depthMap, vary_fragcoord.xy).r; -- cgit v1.2.3