diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class2')
11 files changed, 1319 insertions, 53 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/edgeF.glsl b/indra/newview/app_settings/shaders/class2/deferred/edgeF.glsl index 3155f3f929..30e1702e9f 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/edgeF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/edgeF.glsl @@ -22,7 +22,7 @@ uniform vec2 screen_res; float getDepth(vec2 pos_screen) { - float z = texture2DRect(depthMap, pos_screen.xy).a; + float z = texture2DRect(depthMap, pos_screen.xy).r; z = z*2.0-1.0; vec4 ndc = vec4(0.0, 0.0, z, 1.0); vec4 p = inv_proj*ndc; diff --git a/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl new file mode 100644 index 0000000000..38100d1523 --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl @@ -0,0 +1,74 @@ +/** + * @file edgeF.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * $/LicenseInfo$ + */ + +#version 120 + +#extension GL_ARB_texture_rectangle : enable +#extension GL_ARB_texture_multisample : enable + +uniform sampler2DMS depthMap; +uniform sampler2DMS normalMap; + +varying vec2 vary_fragcoord; + +uniform float depth_cutoff; +uniform float norm_cutoff; + +uniform mat4 inv_proj; +uniform vec2 screen_res; + +float getDepth(ivec2 pos_screen, int sample) +{ + float z = texelFetch(depthMap, pos_screen, sample).r; + z = z*2.0-1.0; + vec4 ndc = vec4(0.0, 0.0, z, 1.0); + vec4 p = inv_proj*ndc; + return p.z/p.w; +} + +void main() +{ + float e = 0; + + ivec2 itc = ivec2(vary_fragcoord.xy); + + for (int i = 0; i < samples; i++) + { + vec3 norm = texelFetch(normalMap, itc, i).xyz; + norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm + float depth = getDepth(itc, i); + + vec2 tc = vary_fragcoord.xy; + + int sc = 1; + + vec2 de; + de.x = (depth-getDepth(itc+ivec2(sc, sc),i)) + (depth-getDepth(itc+ivec2(-sc, -sc), i)); + de.y = (depth-getDepth(itc+ivec2(-sc, sc),i)) + (depth-getDepth(itc+ivec2(sc, -sc), i)); + de /= depth; + de *= de; + de = step(depth_cutoff, de); + + vec2 ne; + vec3 nexnorm = texelFetch(normalMap, itc+ivec2(-sc,-sc), i).rgb; + nexnorm = vec3((nexnorm.xy-0.5)*2.0,nexnorm.z); // unpack norm + ne.x = dot(nexnorm, norm); + vec3 neynorm = texelFetch(normalMap, itc+ivec2(sc,sc), i).rgb; + neynorm = vec3((neynorm.xy-0.5)*2.0,neynorm.z); // unpack norm + ne.y = dot(neynorm, norm); + + ne = 1.0-ne; + + ne = step(norm_cutoff, ne); + + e += dot(de,de)+dot(ne,ne); + } + + e /= samples; + + gl_FragColor.a = e; +} diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl index d6cd984ebe..de987b1233 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl @@ -91,7 +91,7 @@ vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod) vec4 getPosition(vec2 pos_screen) { - float depth = texture2DRect(depthMap, pos_screen.xy).a; + float depth = texture2DRect(depthMap, pos_screen.xy).r; vec2 sc = pos_screen.xy*2.0; sc /= screen_res; sc -= vec2(1.0,1.0); diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightMSF.glsl new file mode 100644 index 0000000000..c6f0ea2a5d --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightMSF.glsl @@ -0,0 +1,244 @@ +/** + * @file multiSpotLightF.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * $/LicenseInfo$ + */ + +#version 120 + +#extension GL_ARB_texture_rectangle : enable +#extension GL_ARB_texture_multisample : enable + +uniform sampler2DMS diffuseRect; +uniform sampler2DMS specularRect; +uniform sampler2DMS depthMap; +uniform sampler2DMS normalMap; +uniform sampler2DMS lightMap; +uniform sampler2D noiseMap; +uniform sampler2D lightFunc; +uniform sampler2D projectionMap; + +uniform mat4 proj_mat; //screen space to light space +uniform float proj_near; //near clip for projection +uniform vec3 proj_p; //plane projection is emitting from (in screen space) +uniform vec3 proj_n; +uniform float proj_focus; //distance from plane to begin blurring +uniform float proj_lod; //(number of mips in proj map) +uniform float proj_range; //range between near clip and far clip plane of projection +uniform float proj_ambient_lod; +uniform float proj_ambiance; +uniform float near_clip; +uniform float far_clip; + +uniform vec3 proj_origin; //origin of projection to be used for angular attenuation +uniform float sun_wash; +uniform int proj_shadow_idx; +uniform float shadow_fade; + +varying vec4 vary_light; + +varying vec4 vary_fragcoord; +uniform vec2 screen_res; + +uniform mat4 inv_proj; + +vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod) +{ + vec4 ret = texture2DLod(projectionMap, tc, lod); + + vec2 dist = tc-vec2(0.5); + + float det = max(1.0-lod/(proj_lod*0.5), 0.0); + + float d = dot(dist,dist); + + ret *= min(clamp((0.25-d)/0.25, 0.0, 1.0)+det, 1.0); + + return ret; +} + +vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod) +{ + vec4 ret = texture2DLod(projectionMap, tc, lod); + + vec2 dist = vec2(0.5) - abs(tc-vec2(0.5)); + + float det = min(lod/(proj_lod*0.5), 1.0); + + float d = min(dist.x, dist.y); + + float edge = 0.25*det; + + ret *= clamp(d/edge, 0.0, 1.0); + + return ret; +} + +vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod) +{ + vec4 ret = texture2DLod(projectionMap, tc, lod); + + vec2 dist = tc-vec2(0.5); + + float d = dot(dist,dist); + + ret *= min(clamp((0.25-d)/0.25, 0.0, 1.0), 1.0); + + return ret; +} + + +vec4 getPosition(ivec2 pos_screen, int sample) +{ + float depth = texelFetch(depthMap, pos_screen, sample).r; + vec2 sc = vec2(pos_screen.xy)*2.0; + sc /= screen_res; + sc -= vec2(1.0,1.0); + vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0); + vec4 pos = inv_proj * ndc; + pos /= pos.w; + pos.w = 1.0; + return pos; +} + +void main() +{ + int wght = 0; + + vec3 fcol = vec3(0,0,0); + + vec2 frag = (vary_fragcoord.xy*0.5+0.5)*screen_res; + + ivec2 itc = ivec2(frag.xy); + + for (int i = 0; i < samples; i++) + { + vec3 pos = getPosition(itc, i).xyz; + vec3 lv = vary_light.xyz-pos.xyz; + float dist2 = dot(lv,lv); + dist2 /= vary_light.w; + if (dist2 <= 1.0) + { + float shadow = 1.0; + + if (proj_shadow_idx >= 0) + { + vec4 shd = texelFetch(lightMap, itc, i); + float sh[2]; + sh[0] = shd.b; + sh[1] = shd.a; + shadow = min(sh[proj_shadow_idx]+shadow_fade, 1.0); + } + + vec3 norm = texelFetch(normalMap, itc, i).xyz; + norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm + + norm = normalize(norm); + float l_dist = -dot(lv, proj_n); + + vec4 proj_tc = (proj_mat * vec4(pos.xyz, 1.0)); + if (proj_tc.z >= 0.0) + { + proj_tc.xyz /= proj_tc.w; + + float fa = gl_Color.a+1.0; + float dist_atten = min(1.0-(dist2-1.0*(1.0-fa))/fa, 1.0); + if (dist_atten > 0.0) + { + lv = proj_origin-pos.xyz; + lv = normalize(lv); + float da = dot(norm, lv); + + vec3 col = vec3(0,0,0); + + vec3 diff_tex = texelFetch(diffuseRect, itc, i).rgb; + + float noise = texture2D(noiseMap, frag.xy/128.0).b; + if (proj_tc.z > 0.0 && + proj_tc.x < 1.0 && + proj_tc.y < 1.0 && + proj_tc.x > 0.0 && + proj_tc.y > 0.0) + { + float lit = 0.0; + float amb_da = proj_ambiance; + + if (da > 0.0) + { + float diff = clamp((l_dist-proj_focus)/proj_range, 0.0, 1.0); + float lod = diff * proj_lod; + + vec4 plcol = texture2DLodDiffuse(projectionMap, proj_tc.xy, lod); + + vec3 lcol = gl_Color.rgb * plcol.rgb * plcol.a; + + lit = da * dist_atten * noise; + + col = lcol*lit*diff_tex*shadow; + amb_da += (da*0.5)*(1.0-shadow)*proj_ambiance; + } + + //float diff = clamp((proj_range-proj_focus)/proj_range, 0.0, 1.0); + vec4 amb_plcol = texture2DLodAmbient(projectionMap, proj_tc.xy, proj_lod); + + amb_da += (da*da*0.5+0.5)*proj_ambiance; + + amb_da *= dist_atten * noise; + + amb_da = min(amb_da, 1.0-lit); + + col += amb_da*gl_Color.rgb*diff_tex.rgb*amb_plcol.rgb*amb_plcol.a; + } + + + vec4 spec = texelFetch(specularRect, itc, i); + if (spec.a > 0.0) + { + vec3 ref = reflect(normalize(pos), norm); + + //project from point pos in direction ref to plane proj_p, proj_n + vec3 pdelta = proj_p-pos; + float ds = dot(ref, proj_n); + + if (ds < 0.0) + { + vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds; + + vec4 stc = (proj_mat * vec4(pfinal.xyz, 1.0)); + + if (stc.z > 0.0) + { + stc.xy /= stc.w; + + float fatten = clamp(spec.a*spec.a+spec.a*0.5, 0.25, 1.0); + + stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5); + + if (stc.x < 1.0 && + stc.y < 1.0 && + stc.x > 0.0 && + stc.y > 0.0) + { + vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod); + col += dist_atten*scol.rgb*gl_Color.rgb*scol.a*spec.rgb*shadow; + } + } + } + } + + fcol += col; + wght++; + } + } + } + } + + if (wght <= 0) + { + discard; + } + + gl_FragColor.rgb = fcol/wght; + gl_FragColor.a = 0.0; +} diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl index 0160e84278..dfa1964142 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl @@ -71,7 +71,7 @@ vec4 getPosition_d(vec2 pos_screen, float depth) 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; + float depth = texture2DRect(depthMap, pos_screen.xy).r; return getPosition_d(pos_screen, depth); } @@ -258,7 +258,7 @@ vec3 scaleSoftClip(vec3 light) void main() { vec2 tc = vary_fragcoord.xy; - float depth = texture2DRect(depthMap, tc.xy).a; + float depth = texture2DRect(depthMap, tc.xy).r; 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 @@ -288,54 +288,8 @@ void main() 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; - float refshad = texture2DRect(lightMap, ref2d).r; - vec3 refn = texture2DRect(normalMap, ref2d).rgb; - refn = vec3((refn.xy-0.5)*2.0,refn.z); // unpack norm - refn = normalize(refn); - // 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 = min(max(dot(refn, reflight.xyz), 0.0), refshad); - // 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 += dumbshiny * spec.rgb; } col = atmosLighting(col); diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl new file mode 100644 index 0000000000..71482d0c7b --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl @@ -0,0 +1,306 @@ +/** + * @file softenLightMSF.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * $/LicenseInfo$ + */ + +#version 120 + +#extension GL_ARB_texture_rectangle : enable +#extension GL_ARB_texture_multisample : enable + +uniform sampler2DMS diffuseRect; +uniform sampler2DMS specularRect; +uniform sampler2DMS normalMap; +uniform sampler2DMS lightMap; +uniform sampler2DMS depthMap; +uniform sampler2D noiseMap; +uniform samplerCube environmentMap; +uniform sampler2D lightFunc; +uniform vec3 gi_quad; + +uniform float blur_size; +uniform float blur_fidelity; + +// Inputs +uniform vec4 morphFactor; +uniform vec3 camPosLocal; +//uniform vec4 camPosWorld; +uniform vec4 gamma; +uniform vec4 lightnorm; +uniform vec4 sunlight_color; +uniform vec4 ambient; +uniform vec4 blue_horizon; +uniform vec4 blue_density; +uniform vec4 haze_horizon; +uniform vec4 haze_density; +uniform vec4 cloud_shadow; +uniform vec4 density_multiplier; +uniform vec4 distance_multiplier; +uniform vec4 max_y; +uniform vec4 glow; +uniform float scene_light_strength; +uniform vec3 env_mat[3]; +uniform vec4 shadow_clip; +uniform mat3 ssao_effect_mat; + +uniform mat4 inv_proj; +uniform vec2 screen_res; + +varying vec4 vary_light; +varying vec2 vary_fragcoord; + +vec3 vary_PositionEye; + +vec3 vary_SunlitColor; +vec3 vary_AmblitColor; +vec3 vary_AdditiveColor; +vec3 vary_AtmosAttenuation; + +vec4 getPosition_d(vec2 pos_screen, float depth) +{ + vec2 sc = pos_screen.xy*2.0; + sc /= screen_res; + sc -= vec2(1.0,1.0); + vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0); + vec4 pos = inv_proj * ndc; + pos /= pos.w; + pos.w = 1.0; + return pos; +} + +vec3 getPositionEye() +{ + return vary_PositionEye; +} +vec3 getSunlitColor() +{ + return vary_SunlitColor; +} +vec3 getAmblitColor() +{ + return vary_AmblitColor; +} +vec3 getAdditiveColor() +{ + return vary_AdditiveColor; +} +vec3 getAtmosAttenuation() +{ + return vary_AtmosAttenuation; +} + + +void setPositionEye(vec3 v) +{ + vary_PositionEye = v; +} + +void setSunlitColor(vec3 v) +{ + vary_SunlitColor = v; +} + +void setAmblitColor(vec3 v) +{ + vary_AmblitColor = v; +} + +void setAdditiveColor(vec3 v) +{ + vary_AdditiveColor = v; +} + +void setAtmosAttenuation(vec3 v) +{ + vary_AtmosAttenuation = v; +} + +void calcAtmospherics(vec3 inPositionEye, float ambFactor) { + + vec3 P = inPositionEye; + setPositionEye(P); + + //(TERRAIN) limit altitude + if (P.y > max_y.x) P *= (max_y.x / P.y); + if (P.y < -max_y.x) P *= (-max_y.x / P.y); + + vec3 tmpLightnorm = lightnorm.xyz; + + vec3 Pn = normalize(P); + float Plen = length(P); + + vec4 temp1 = vec4(0); + vec3 temp2 = vec3(0); + vec4 blue_weight; + vec4 haze_weight; + vec4 sunlight = sunlight_color; + vec4 light_atten; + + //sunlight attenuation effect (hue and brightness) due to atmosphere + //this is used later for sunlight modulation at various altitudes + light_atten = (blue_density * 1.0 + vec4(haze_density.r) * 0.25) * (density_multiplier.x * max_y.x); + //I had thought blue_density and haze_density should have equal weighting, + //but attenuation due to haze_density tends to seem too strong + + temp1 = blue_density + vec4(haze_density.r); + blue_weight = blue_density / temp1; + haze_weight = vec4(haze_density.r) / temp1; + + //(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain) + temp2.y = max(0.0, tmpLightnorm.y); + temp2.y = 1. / temp2.y; + sunlight *= exp( - light_atten * temp2.y); + + // main atmospheric scattering line integral + temp2.z = Plen * density_multiplier.x; + + // Transparency (-> temp1) + // ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier.x in a variable because the ati + // compiler gets confused. + temp1 = exp(-temp1 * temp2.z * distance_multiplier.x); + + //final atmosphere attenuation factor + setAtmosAttenuation(temp1.rgb); + + //compute haze glow + //(can use temp2.x as temp because we haven't used it yet) + temp2.x = dot(Pn, tmpLightnorm.xyz); + temp2.x = 1. - temp2.x; + //temp2.x is 0 at the sun and increases away from sun + temp2.x = max(temp2.x, .03); //was glow.y + //set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot) + temp2.x *= glow.x; + //higher glow.x gives dimmer glow (because next step is 1 / "angle") + temp2.x = pow(temp2.x, glow.z); + //glow.z should be negative, so we're doing a sort of (1 / "angle") function + + //add "minimum anti-solar illumination" + temp2.x += .25; + + //increase ambient when there are more clouds + 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( + vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow.x) + tmpAmbient) + + (haze_horizon.r * haze_weight) * (sunlight*(1.-cloud_shadow.x) * temp2.x + + tmpAmbient))); + + //brightness of surface both sunlight and ambient + setSunlitColor(vec3(sunlight * .5)); + setAmblitColor(vec3(tmpAmbient * .25)); + setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1)); +} + +vec3 atmosLighting(vec3 light) +{ + light *= getAtmosAttenuation().r; + light += getAdditiveColor(); + return (2.0 * light); +} + +vec3 atmosTransport(vec3 light) { + light *= getAtmosAttenuation().r; + light += getAdditiveColor() * 2.0; + return light; +} +vec3 atmosGetDiffuseSunlightColor() +{ + return getSunlitColor(); +} + +vec3 scaleDownLight(vec3 light) +{ + return (light / scene_light_strength ); +} + +vec3 scaleUpLight(vec3 light) +{ + return (light * scene_light_strength); +} + +vec3 atmosAmbient(vec3 light) +{ + return getAmblitColor() + light / 2.0; +} + +vec3 atmosAffectDirectionalLight(float lightIntensity) +{ + return getSunlitColor() * lightIntensity; +} + +vec3 scaleSoftClip(vec3 light) +{ + //soft clip effect: + light = 1. - clamp(light, vec3(0.), vec3(1.)); + light = 1. - pow(light, gamma.xxx); + + return light; +} + +void main() +{ + vec2 tc = vary_fragcoord.xy; + ivec2 itc = ivec2(tc); + + vec3 fcol = vec3(0,0,0); + + float amb = 0; + + for (int i = 0; i < samples; ++i) + { + float depth = texelFetch(depthMap, itc.xy, i).r; + vec3 pos = getPosition_d(tc, depth).xyz; + vec3 norm = texelFetch(normalMap, itc, i).xyz; + norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm + + float da = max(dot(norm.xyz, vary_light.xyz), 0.0); + + vec4 diffuse = texelFetch(diffuseRect, itc, i); + vec4 spec = texelFetch(specularRect, itc, i); + + vec2 scol_ambocc = texelFetch(lightMap, itc, i).rg; + float scol = max(scol_ambocc.r, diffuse.a); + float ambocc = scol_ambocc.g; + amb += ambocc; + + calcAtmospherics(pos.xyz, ambocc); + + vec3 col = atmosAmbient(vec3(0)); + col += atmosAffectDirectionalLight(max(min(da, scol), diffuse.a)); + + col *= diffuse.rgb; + + if (spec.a > 0.0) // specular reflection + { + // 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; + + // add the two types of shiny together + col += dumbshiny * spec.rgb; + } + + col = atmosLighting(col); + col = scaleSoftClip(col); + + fcol += col; + } + + gl_FragColor.rgb = fcol/samples; + gl_FragColor.a = 0.0; +} diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightMSF.glsl new file mode 100644 index 0000000000..099a45718a --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightMSF.glsl @@ -0,0 +1,245 @@ +/** + * @file multiSpotLightF.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * $/LicenseInfo$ + */ + +#version 120 + +#extension GL_ARB_texture_rectangle : enable +#extension GL_ARB_texture_multisample : enable + +uniform sampler2DMS diffuseRect; +uniform sampler2DMS specularRect; +uniform sampler2DMS depthMap; +uniform sampler2DMS normalMap; +uniform sampler2DMS lightMap; +uniform sampler2D noiseMap; +uniform sampler2D lightFunc; +uniform sampler2D projectionMap; + +uniform mat4 proj_mat; //screen space to light space +uniform float proj_near; //near clip for projection +uniform vec3 proj_p; //plane projection is emitting from (in screen space) +uniform vec3 proj_n; +uniform float proj_focus; //distance from plane to begin blurring +uniform float proj_lod; //(number of mips in proj map) +uniform float proj_range; //range between near clip and far clip plane of projection +uniform float proj_ambient_lod; +uniform float proj_ambiance; +uniform float near_clip; +uniform float far_clip; + +uniform vec3 proj_origin; //origin of projection to be used for angular attenuation +uniform float sun_wash; +uniform int proj_shadow_idx; +uniform float shadow_fade; + +varying vec4 vary_light; + +varying vec4 vary_fragcoord; +uniform vec2 screen_res; + +uniform mat4 inv_proj; + +vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod) +{ + vec4 ret = texture2DLod(projectionMap, tc, lod); + + vec2 dist = tc-vec2(0.5); + + float det = max(1.0-lod/(proj_lod*0.5), 0.0); + + float d = dot(dist,dist); + + ret *= min(clamp((0.25-d)/0.25, 0.0, 1.0)+det, 1.0); + + return ret; +} + +vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod) +{ + vec4 ret = texture2DLod(projectionMap, tc, lod); + + vec2 dist = vec2(0.5) - abs(tc-vec2(0.5)); + + float det = min(lod/(proj_lod*0.5), 1.0); + + float d = min(dist.x, dist.y); + + float edge = 0.25*det; + + ret *= clamp(d/edge, 0.0, 1.0); + + return ret; +} + +vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod) +{ + vec4 ret = texture2DLod(projectionMap, tc, lod); + + vec2 dist = tc-vec2(0.5); + + float d = dot(dist,dist); + + ret *= min(clamp((0.25-d)/0.25, 0.0, 1.0), 1.0); + + return ret; +} + + +vec4 getPosition(ivec2 pos_screen, int sample) +{ + float depth = texelFetch(depthMap, pos_screen, sample).r; + vec2 sc = vec2(pos_screen.xy)*2.0; + sc /= screen_res; + sc -= vec2(1.0,1.0); + vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0); + vec4 pos = inv_proj * ndc; + pos /= pos.w; + pos.w = 1.0; + return pos; +} + +void main() +{ + vec4 frag = vary_fragcoord; + frag.xyz /= frag.w; + frag.xyz = frag.xyz*0.5+0.5; + frag.xy *= screen_res; + ivec2 itc = ivec2(frag.xy); + + vec3 fcol = vec3(0,0,0); + int wght = 0; + + for (int i = 0; i < samples; i++) + { + vec3 pos = getPosition(itc, i).xyz; + vec3 lv = vary_light.xyz-pos.xyz; + float dist2 = dot(lv,lv); + dist2 /= vary_light.w; + if (dist2 <= 1.0) + { + float shadow = 1.0; + + if (proj_shadow_idx >= 0) + { + vec4 shd = texelFetch(lightMap, itc, i); + float sh[2]; + sh[0] = shd.b; + sh[1] = shd.a; + shadow = min(sh[proj_shadow_idx]+shadow_fade, 1.0); + } + + vec3 norm = texelFetch(normalMap, itc, i).xyz; + norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm + + norm = normalize(norm); + float l_dist = -dot(lv, proj_n); + + vec4 proj_tc = (proj_mat * vec4(pos.xyz, 1.0)); + if (proj_tc.z >= 0.0) + { + proj_tc.xyz /= proj_tc.w; + + float fa = gl_Color.a+1.0; + float dist_atten = min(1.0-(dist2-1.0*(1.0-fa))/fa, 1.0); + if (dist_atten > 0.0) + { + lv = proj_origin-pos.xyz; + lv = normalize(lv); + float da = dot(norm, lv); + + vec3 col = vec3(0,0,0); + + vec3 diff_tex = texelFetch(diffuseRect, itc, i).rgb; + + float noise = texture2D(noiseMap, frag.xy/128.0).b; + if (proj_tc.z > 0.0 && + proj_tc.x < 1.0 && + proj_tc.y < 1.0 && + proj_tc.x > 0.0 && + proj_tc.y > 0.0) + { + float lit = 0.0; + float amb_da = proj_ambiance; + + if (da > 0.0) + { + float diff = clamp((l_dist-proj_focus)/proj_range, 0.0, 1.0); + float lod = diff * proj_lod; + + vec4 plcol = texture2DLodDiffuse(projectionMap, proj_tc.xy, lod); + + vec3 lcol = gl_Color.rgb * plcol.rgb * plcol.a; + + lit = da * dist_atten * noise; + + col = lcol*lit*diff_tex*shadow; + amb_da += (da*0.5)*(1.0-shadow)*proj_ambiance; + } + + //float diff = clamp((proj_range-proj_focus)/proj_range, 0.0, 1.0); + vec4 amb_plcol = texture2DLodAmbient(projectionMap, proj_tc.xy, proj_lod); + + amb_da += (da*da*0.5+0.5)*proj_ambiance; + + amb_da *= dist_atten * noise; + + amb_da = min(amb_da, 1.0-lit); + + col += amb_da*gl_Color.rgb*diff_tex.rgb*amb_plcol.rgb*amb_plcol.a; + } + + + vec4 spec = texelFetch(specularRect, itc, i); + if (spec.a > 0.0) + { + vec3 ref = reflect(normalize(pos), norm); + + //project from point pos in direction ref to plane proj_p, proj_n + vec3 pdelta = proj_p-pos; + float ds = dot(ref, proj_n); + + if (ds < 0.0) + { + vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds; + + vec4 stc = (proj_mat * vec4(pfinal.xyz, 1.0)); + + if (stc.z > 0.0) + { + stc.xy /= stc.w; + + float fatten = clamp(spec.a*spec.a+spec.a*0.5, 0.25, 1.0); + + stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5); + + if (stc.x < 1.0 && + stc.y < 1.0 && + stc.x > 0.0 && + stc.y > 0.0) + { + vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod); + col += dist_atten*scol.rgb*gl_Color.rgb*scol.a*spec.rgb*shadow; + } + } + } + } + + fcol += col; + wght++; + } + } + } + } + + if (wght <= 0) + { + discard; + } + + gl_FragColor.rgb = fcol/wght; + gl_FragColor.a = 0.0; +} diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl index 4369b3b34f..b724c134b9 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl @@ -45,7 +45,7 @@ uniform float spot_shadow_offset; vec4 getPosition(vec2 pos_screen) { - float depth = texture2DRect(depthMap, pos_screen.xy).a; + float depth = texture2DRect(depthMap, pos_screen.xy).r; vec2 sc = pos_screen.xy*2.0; sc /= screen_res; sc -= vec2(1.0,1.0); diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightMSF.glsl new file mode 100644 index 0000000000..dd6fa958c9 --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightMSF.glsl @@ -0,0 +1,202 @@ +/** + * @file sunLightMSF.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * $/LicenseInfo$ + */ + +#version 120 + +#extension GL_ARB_texture_rectangle : enable +#extension GL_ARB_texture_multisample : enable + +//class 2, shadows, no SSAO + +uniform sampler2DMS depthMap; +uniform sampler2DMS normalMap; +uniform sampler2DRectShadow shadowMap0; +uniform sampler2DRectShadow shadowMap1; +uniform sampler2DRectShadow shadowMap2; +uniform sampler2DRectShadow shadowMap3; +uniform sampler2DShadow shadowMap4; +uniform sampler2DShadow shadowMap5; + + +// Inputs +uniform mat4 shadow_matrix[6]; +uniform vec4 shadow_clip; +uniform float ssao_radius; +uniform float ssao_max_radius; +uniform float ssao_factor; +uniform float ssao_factor_inv; + +varying vec2 vary_fragcoord; +varying vec4 vary_light; + +uniform mat4 inv_proj; +uniform vec2 screen_res; +uniform vec2 shadow_res; +uniform vec2 proj_shadow_res; + +uniform float shadow_bias; +uniform float shadow_offset; + +uniform float spot_shadow_bias; +uniform float spot_shadow_offset; + +vec4 getPosition(ivec2 pos_screen, int sample) +{ + float depth = texelFetch(depthMap, pos_screen.xy, sample).r; + vec2 sc = vec2(pos_screen.xy)*2.0; + sc /= screen_res; + sc -= vec2(1.0,1.0); + vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0); + vec4 pos = inv_proj * ndc; + pos /= pos.w; + pos.w = 1.0; + return pos; +} + +float pcfShadow(sampler2DRectShadow shadowMap, vec4 stc, float scl) +{ + stc.xyz /= stc.w; + stc.z += shadow_bias*scl; + + float cs = shadow2DRect(shadowMap, stc.xyz).x; + float shadow = cs; + + shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(1.5, 1.5, 0.0)).x, cs); + shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(1.5, -1.5, 0.0)).x, cs); + shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(-1.5, 1.5, 0.0)).x, cs); + shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(-1.5, -1.5, 0.0)).x, cs); + + return shadow/5.0; + + //return shadow; +} + +float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float scl) +{ + stc.xyz /= stc.w; + stc.z += spot_shadow_bias*scl; + + float cs = shadow2D(shadowMap, stc.xyz).x; + float shadow = cs; + + vec2 off = 1.5/proj_shadow_res; + + shadow += max(shadow2D(shadowMap, stc.xyz+vec3(off.x, off.y, 0.0)).x, cs); + shadow += max(shadow2D(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0)).x, cs); + shadow += max(shadow2D(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0)).x, cs); + shadow += max(shadow2D(shadowMap, stc.xyz+vec3(-off.x, -off.y, 0.0)).x, cs); + + return shadow/5.0; + + //return shadow; +} + +void main() +{ + vec2 pos_screen = vary_fragcoord.xy; + ivec2 itc = ivec2(pos_screen); + + //try doing an unproject here + + vec4 fcol = vec4(0,0,0,0); + + for (int i = 0; i < samples; i++) + { + vec4 pos = getPosition(itc, i); + + vec4 nmap4 = texelFetch(normalMap, itc, i); + nmap4 = vec4((nmap4.xy-0.5)*2.0,nmap4.z,nmap4.w); // unpack norm + float displace = nmap4.w; + vec3 norm = nmap4.xyz; + + /*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL + { + gl_FragColor = vec4(0.0); // doesn't matter + return; + }*/ + + float shadow = 1.0; + float dp_directional_light = max(0.0, dot(norm, vary_light.xyz)); + + vec3 shadow_pos = pos.xyz + displace*norm; + vec3 offset = vary_light.xyz * (1.0-dp_directional_light); + + vec4 spos = vec4(shadow_pos+offset*shadow_offset, 1.0); + + if (spos.z > -shadow_clip.w) + { + if (dp_directional_light == 0.0) + { + // if we know this point is facing away from the sun then we know it's in shadow without having to do a squirrelly shadow-map lookup + shadow = 0.0; + } + else + { + vec4 lpos; + + if (spos.z < -shadow_clip.z) + { + lpos = shadow_matrix[3]*spos; + lpos.xy *= shadow_res; + shadow = pcfShadow(shadowMap3, lpos, 0.25); + shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0); + } + else if (spos.z < -shadow_clip.y) + { + lpos = shadow_matrix[2]*spos; + lpos.xy *= shadow_res; + shadow = pcfShadow(shadowMap2, lpos, 0.5); + } + else if (spos.z < -shadow_clip.x) + { + lpos = shadow_matrix[1]*spos; + lpos.xy *= shadow_res; + shadow = pcfShadow(shadowMap1, lpos, 0.75); + } + else + { + lpos = shadow_matrix[0]*spos; + lpos.xy *= shadow_res; + shadow = pcfShadow(shadowMap0, lpos, 1.0); + } + + // take the most-shadowed value out of these two: + // * the blurred sun shadow in the light (shadow) map + // * an unblurred dot product between the sun and this norm + // the goal is to err on the side of most-shadow to fill-in shadow holes and reduce artifacting + shadow = min(shadow, dp_directional_light); + + //lpos.xy /= lpos.w*32.0; + //if (fract(lpos.x) < 0.1 || fract(lpos.y) < 0.1) + //{ + // shadow = 0.0; + //} + + } + } + else + { + // more distant than the shadow map covers + shadow = 1.0; + } + + fcol[0] += shadow; + fcol[1] += 1.0; + + spos = vec4(shadow_pos+norm*spot_shadow_offset, 1.0); + + //spotlight shadow 1 + vec4 lpos = shadow_matrix[4]*spos; + fcol[2] += pcfShadow(shadowMap4, lpos, 0.8); + + //spotlight shadow 2 + lpos = shadow_matrix[5]*spos; + fcol[3] += pcfShadow(shadowMap5, lpos, 0.8); + } + + gl_FragColor = fcol/samples; +} diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl index 847b36b1ac..68e18162f6 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl @@ -45,7 +45,7 @@ uniform float spot_shadow_offset; vec4 getPosition(vec2 pos_screen) { - float depth = texture2DRect(depthMap, pos_screen.xy).a; + float depth = texture2DRect(depthMap, pos_screen.xy).r; vec2 sc = pos_screen.xy*2.0; sc /= screen_res; sc -= vec2(1.0,1.0); diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOMSF.glsl new file mode 100644 index 0000000000..d28741f945 --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOMSF.glsl @@ -0,0 +1,241 @@ +/** + * @file sunLightSSAOF.glsl + * + * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc. + * $License$ + */ + +#version 120 + +#extension GL_ARB_texture_rectangle : enable +#extension GL_ARB_texture_multisample : enable + +//class 2 -- shadows and SSAO + +uniform sampler2DMS depthMap; +uniform sampler2DMS normalMap; +uniform sampler2DRectShadow shadowMap0; +uniform sampler2DRectShadow shadowMap1; +uniform sampler2DRectShadow shadowMap2; +uniform sampler2DRectShadow shadowMap3; +uniform sampler2DShadow shadowMap4; +uniform sampler2DShadow shadowMap5; +uniform sampler2D noiseMap; + +// Inputs +uniform mat4 shadow_matrix[6]; +uniform vec4 shadow_clip; +uniform float ssao_radius; +uniform float ssao_max_radius; +uniform float ssao_factor; +uniform float ssao_factor_inv; + +varying vec2 vary_fragcoord; +varying vec4 vary_light; + +uniform mat4 inv_proj; +uniform vec2 screen_res; +uniform vec2 shadow_res; +uniform vec2 proj_shadow_res; + +uniform float shadow_bias; +uniform float shadow_offset; + +uniform float spot_shadow_bias; +uniform float spot_shadow_offset; + +vec4 getPosition(ivec2 pos_screen, int sample) +{ + float depth = texelFetch(depthMap, pos_screen, sample).r; + vec2 sc = vec2(pos_screen.xy)*2.0; + sc /= screen_res; + sc -= vec2(1.0,1.0); + vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0); + vec4 pos = inv_proj * ndc; + pos /= pos.w; + pos.w = 1.0; + return pos; +} + +//calculate decreases in ambient lighting when crowded out (SSAO) +float calcAmbientOcclusion(vec4 pos, vec3 norm, int sample) +{ + float ret = 1.0; + + vec2 kern[8]; + // exponentially (^2) distant occlusion samples spread around origin + kern[0] = vec2(-1.0, 0.0) * 0.125*0.125; + kern[1] = vec2(1.0, 0.0) * 0.250*0.250; + kern[2] = vec2(0.0, 1.0) * 0.375*0.375; + kern[3] = vec2(0.0, -1.0) * 0.500*0.500; + kern[4] = vec2(0.7071, 0.7071) * 0.625*0.625; + kern[5] = vec2(-0.7071, -0.7071) * 0.750*0.750; + kern[6] = vec2(-0.7071, 0.7071) * 0.875*0.875; + kern[7] = vec2(0.7071, -0.7071) * 1.000*1.000; + + vec2 pos_screen = vary_fragcoord.xy; + vec3 pos_world = pos.xyz; + vec2 noise_reflect = texture2D(noiseMap, vary_fragcoord.xy/128.0).xy; + + float angle_hidden = 0.0; + int points = 0; + + float scale = min(ssao_radius / -pos_world.z, ssao_max_radius); + + // it was found that keeping # of samples a constant was the fastest, probably due to compiler optimizations (unrolling?) + for (int i = 0; i < 8; i++) + { + ivec2 samppos_screen = ivec2(pos_screen + scale * reflect(kern[i], noise_reflect)); + vec3 samppos_world = getPosition(samppos_screen, sample).xyz; + + vec3 diff = pos_world - samppos_world; + float dist2 = dot(diff, diff); + + // assume each sample corresponds to an occluding sphere with constant radius, constant x-sectional area + // --> solid angle shrinking by the square of distance + //radius is somewhat arbitrary, can approx with just some constant k * 1 / dist^2 + //(k should vary inversely with # of samples, but this is taken care of later) + + angle_hidden = angle_hidden + float(dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0) * min(1.0/dist2, ssao_factor_inv); + + // 'blocked' samples (significantly closer to camera relative to pos_world) are "no data", not "no occlusion" + points = points + int(diff.z > -1.0); + } + + angle_hidden = min(ssao_factor*angle_hidden/float(points), 1.0); + + ret = (1.0 - (float(points != 0) * angle_hidden)); + + return min(ret, 1.0); +} + +float pcfShadow(sampler2DRectShadow shadowMap, vec4 stc, float scl) +{ + stc.xyz /= stc.w; + stc.z += shadow_bias*scl; + + float cs = shadow2DRect(shadowMap, stc.xyz).x; + float shadow = cs; + + shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(1.5, 1.5, 0.0)).x, cs); + shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(1.5, -1.5, 0.0)).x, cs); + shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(-1.5, 1.5, 0.0)).x, cs); + shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(-1.5, -1.5, 0.0)).x, cs); + + return shadow/5.0; + + //return shadow; +} + +float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float scl) +{ + stc.xyz /= stc.w; + stc.z += spot_shadow_bias*scl; + + float cs = shadow2D(shadowMap, stc.xyz).x; + float shadow = cs; + + vec2 off = 1.5/proj_shadow_res; + + shadow += max(shadow2D(shadowMap, stc.xyz+vec3(off.x, off.y, 0.0)).x, cs); + shadow += max(shadow2D(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0)).x, cs); + shadow += max(shadow2D(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0)).x, cs); + shadow += max(shadow2D(shadowMap, stc.xyz+vec3(-off.x, -off.y, 0.0)).x, cs); + + + return shadow/5.0; + + //return shadow; +} + +void main() +{ + vec2 pos_screen = vary_fragcoord.xy; + ivec2 itc = ivec2(pos_screen); + vec4 fcol = vec4(0,0,0,0); + + for (int i = 0; i < samples; i++) + { + vec4 pos = getPosition(itc, i); + + vec4 nmap4 = texelFetch(normalMap, itc, i); + nmap4 = vec4((nmap4.xy-0.5)*2.0,nmap4.z,nmap4.w); // unpack norm + float displace = nmap4.w; + vec3 norm = nmap4.xyz; + + float shadow = 1.0; + float dp_directional_light = max(0.0, dot(norm, vary_light.xyz)); + + vec3 shadow_pos = pos.xyz + displace*norm; + vec3 offset = vary_light.xyz * (1.0-dp_directional_light); + + vec4 spos = vec4(shadow_pos+offset*shadow_offset, 1.0); + + if (spos.z > -shadow_clip.w) + { + if (dp_directional_light == 0.0) + { + // if we know this point is facing away from the sun then we know it's in shadow without having to do a squirrelly shadow-map lookup + shadow = 0.0; + } + else + { + vec4 lpos; + + if (spos.z < -shadow_clip.z) + { + lpos = shadow_matrix[3]*spos; + lpos.xy *= shadow_res; + shadow = pcfShadow(shadowMap3, lpos, 0.25); + shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0); + } + else if (spos.z < -shadow_clip.y) + { + lpos = shadow_matrix[2]*spos; + lpos.xy *= shadow_res; + shadow = pcfShadow(shadowMap2, lpos, 0.5); + } + else if (spos.z < -shadow_clip.x) + { + lpos = shadow_matrix[1]*spos; + lpos.xy *= shadow_res; + shadow = pcfShadow(shadowMap1, lpos, 0.75); + } + else + { + lpos = shadow_matrix[0]*spos; + lpos.xy *= shadow_res; + shadow = pcfShadow(shadowMap0, lpos, 1.0); + } + + // take the most-shadowed value out of these two: + // * the blurred sun shadow in the light (shadow) map + // * an unblurred dot product between the sun and this norm + // the goal is to err on the side of most-shadow to fill-in shadow holes and reduce artifacting + shadow = min(shadow, dp_directional_light); + + } + } + else + { + // more distant than the shadow map covers + shadow = 1.0; + } + + + fcol[0] += shadow; + fcol[1] += calcAmbientOcclusion(pos, norm, i); + + spos.xyz = shadow_pos+offset*spot_shadow_offset; + + //spotlight shadow 1 + vec4 lpos = shadow_matrix[4]*spos; + fcol[2] += pcfShadow(shadowMap4, lpos, 0.8); + + //spotlight shadow 2 + lpos = shadow_matrix[5]*spos; + fcol[3] += pcfShadow(shadowMap5, lpos, 0.8); + } + + gl_FragColor = fcol / samples; +} |