From e416840f85dc4a367894036b9fe483f17d959c54 Mon Sep 17 00:00:00 2001 From: Tofu Linden Date: Tue, 24 Aug 2010 19:22:00 +0100 Subject: Backed out changeset c3d41f18ce2b back-out the back-out for this branch. yay. --- .../shaders/class1/deferred/softenLightF.glsl | 99 +++++++++++++++++++--- 1 file changed, 85 insertions(+), 14 deletions(-) (limited to 'indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl') diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl index b4b0d0ce9d..bef91e735d 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl @@ -11,6 +11,7 @@ uniform sampler2DRect diffuseRect; uniform sampler2DRect specularRect; uniform sampler2DRect positionMap; uniform sampler2DRect normalMap; +uniform sampler2DRect lightMap; uniform sampler2DRect depthMap; uniform sampler2D noiseMap; uniform samplerCube environmentMap; @@ -40,7 +41,7 @@ uniform float scene_light_strength; uniform vec3 env_mat[3]; //uniform mat4 shadow_matrix[3]; //uniform vec4 shadow_clip; -//uniform mat3 ssao_effect_mat; +uniform mat3 ssao_effect_mat; varying vec4 vary_light; varying vec2 vary_fragcoord; @@ -55,9 +56,8 @@ vec3 vary_AtmosAttenuation; uniform mat4 inv_proj; uniform vec2 screen_res; -vec4 getPosition(vec2 pos_screen) -{ //get position in screen space (world units) given window coordinate and depth map - float depth = texture2DRect(depthMap, pos_screen.xy).a; +vec4 getPosition_d(vec2 pos_screen, float depth) +{ vec2 sc = pos_screen.xy*2.0; sc /= screen_res; sc -= vec2(1.0,1.0); @@ -68,6 +68,12 @@ vec4 getPosition(vec2 pos_screen) return pos; } +vec4 getPosition(vec2 pos_screen) +{ //get position in screen space (world units) given window coordinate and depth map + float depth = texture2DRect(depthMap, pos_screen.xy).a; + return getPosition_d(pos_screen, depth); +} + vec3 getPositionEye() { return vary_PositionEye; @@ -178,7 +184,17 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) { temp2.x += .25; //increase ambient when there are more clouds - vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow.x * 0.5; + vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow.x * 0.5; + + /* decrease value and saturation (that in HSV, not HSL) for occluded areas + * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html + * // The following line of code performs the equivalent of: + * float ambAlpha = tmpAmbient.a; + * float ambValue = dot(vec3(tmpAmbient), vec3(0.577)); // projection onto <1/rt(3), 1/rt(3), 1/rt(3)>, the neutral white-black axis + * vec3 ambHueSat = vec3(tmpAmbient) - vec3(ambValue); + * tmpAmbient = vec4(RenderSSAOEffect.valueFactor * vec3(ambValue) + RenderSSAOEffect.saturationFactor *(1.0 - ambFactor) * ambHueSat, ambAlpha); + */ + tmpAmbient = vec4(mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor), tmpAmbient.a); //haze color setAdditiveColor( @@ -241,8 +257,10 @@ vec3 scaleSoftClip(vec3 light) void main() { vec2 tc = vary_fragcoord.xy; - vec3 pos = getPosition(tc).xyz; - vec3 norm = texture2DRect(normalMap, tc).xyz*2.0-1.0; + float depth = texture2DRect(depthMap, tc.xy).a; + vec3 pos = getPosition_d(tc, depth).xyz; + vec3 norm = texture2DRect(normalMap, tc).xyz; + norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm //vec3 nz = texture2D(noiseMap, vary_fragcoord.xy/128.0).xyz; float da = max(dot(norm.xyz, vary_light.xyz), 0.0); @@ -250,23 +268,76 @@ void main() vec4 diffuse = texture2DRect(diffuseRect, tc); vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy); - calcAtmospherics(pos.xyz, 0.0); + vec2 scol_ambocc = texture2DRect(lightMap, vary_fragcoord.xy).rg; + float scol = max(scol_ambocc.r, diffuse.a); + float ambocc = scol_ambocc.g; + + calcAtmospherics(pos.xyz, ambocc); vec3 col = atmosAmbient(vec3(0)); - col += atmosAffectDirectionalLight(clamp(da, diffuse.a, 1.0)); + col += atmosAffectDirectionalLight(max(min(da, scol), diffuse.a)); col *= diffuse.rgb; - if (spec.a > 0.0) + if (spec.a > 0.0) // specular reflection { - vec3 ref = normalize(reflect(pos.xyz, norm.xyz)); - float sa = dot(ref, vary_light.xyz); - col.rgb += vary_SunlitColor*spec.rgb*texture2D(lightFunc, vec2(sa, spec.a)).a; + // the old infinite-sky shiny reflection + // + vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz)); + float sa = dot(refnormpersp, vary_light.xyz); + vec3 dumbshiny = vary_SunlitColor*scol_ambocc.r*texture2D(lightFunc, vec2(sa, spec.a)).a; + + /* + // screen-space cheap fakey reflection map + // + vec3 refnorm = normalize(reflect(vec3(0,0,-1), norm.xyz)); + depth -= 0.5; // unbias depth + // first figure out where we'll make our 2D guess from + vec2 ref2d = (0.25 * screen_res.y) * (refnorm.xy) * abs(refnorm.z) / depth; + // Offset the guess source a little according to a trivial + // checkerboard dither function and spec.a. + // This is meant to be similar to sampling a blurred version + // of the diffuse map. LOD would be better in that regard. + // The goal of the blur is to soften reflections in surfaces + // with low shinyness, and also to disguise our lameness. + float checkerboard = floor(mod(tc.x+tc.y, 2.0)); // 0.0, 1.0 + float checkoffset = (3.0 + (7.0*(1.0-spec.a)))*(checkerboard-0.5); + ref2d += vec2(checkoffset, checkoffset); + ref2d += tc.xy; // use as offset from destination + // Get attributes from the 2D guess point. + // We average two samples of diffuse (not of anything else) per + // pixel to try to reduce aliasing some more. + vec3 refcol = 0.5 * (texture2DRect(diffuseRect, ref2d + vec2(0.0, -checkoffset)).rgb + + texture2DRect(diffuseRect, ref2d + vec2(-checkoffset, 0.0)).rgb); + float refdepth = texture2DRect(depthMap, ref2d).a; + vec3 refpos = getPosition_d(ref2d, refdepth).xyz; + vec3 refn = texture2DRect(normalMap, ref2d).rgb; + refn = normalize(vec3((refn.xy-0.5)*2.0,refn.z)); // unpack norm + // figure out how appropriate our guess actually was + float refapprop = max(0.0, dot(-refnorm, normalize(pos - refpos))); + // darken reflections from points which face away from the reflected ray - our guess was a back-face + //refapprop *= step(dot(refnorm, refn), 0.0); + refapprop = min(refapprop, max(0.0, -dot(refnorm, refn))); // more conservative variant + // get appropriate light strength for guess-point. + // reflect light direction to increase the illusion that + // these are reflections. + vec3 reflight = reflect(lightnorm.xyz, norm.xyz); + float reflit = max(dot(refn, reflight.xyz), 0.0); + // apply sun color to guess-point, dampen according to inappropriateness of guess + float refmod = min(refapprop, reflit); + vec3 refprod = vary_SunlitColor * refcol.rgb * refmod; + vec3 ssshiny = (refprod * spec.a); + ssshiny *= 0.3; // dampen it even more + */ + vec3 ssshiny = vec3(0,0,0); + + // add the two types of shiny together + col += (ssshiny + dumbshiny) * spec.rgb; } col = atmosLighting(col); col = scaleSoftClip(col); - + gl_FragColor.rgb = col; gl_FragColor.a = 0.0; } -- cgit v1.2.3