diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl')
| -rw-r--r-- | indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl | 351 |
1 files changed, 177 insertions, 174 deletions
diff --git a/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl index 56b0f4e5ce..3274153a46 100644 --- a/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl +++ b/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl @@ -1,9 +1,9 @@ /** - * @file spotLightF.glsl + * @file class3\deferred\spotLightF.glsl * - * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * $LicenseInfo:firstyear=2022&license=viewerlgpl$ * Second Life Viewer Source Code - * Copyright (C) 2007, Linden Research, Inc. + * Copyright (C) 2022, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -28,6 +28,16 @@ /*[EXTRA_CODE_HERE]*/ +#define DEBUG_ANY_LIGHT_TYPE 0 // Output green light cone +#define DEBUG_LEG_LIGHT_TYPE 0 // Show Legacy objects in green +#define DEBUG_PBR_LIGHT_TYPE 0 // Show PBR objects in green +#define DEBUG_PBR_SPOT 0 +#define DEBUG_PBR_SPOT_DIFFUSE 0 +#define DEBUG_PBR_SPOT_SPECULAR 0 + +#define DEBUG_SPOT_NL 0 // monochome area effected by light +#define DEBUG_SPOT_ZERO 0 // Output zero for spotlight + #ifdef DEFINE_GL_FRAGCOLOR out vec4 frag_color; #else @@ -38,10 +48,11 @@ uniform sampler2DRect diffuseRect; uniform sampler2DRect specularRect; uniform sampler2DRect depthMap; uniform sampler2DRect normalMap; +uniform sampler2DRect emissiveRect; // PBR linear packed Occlusion, Roughness, Metal. See: pbropaqueF.glsl uniform samplerCube environmentMap; uniform sampler2DRect lightMap; uniform sampler2D noiseMap; -uniform sampler2D projectionMap; +uniform sampler2D projectionMap; // rgba uniform sampler2D lightFunc; uniform mat4 proj_mat; //screen space to light space @@ -71,217 +82,209 @@ uniform vec2 screen_res; uniform mat4 inv_proj; -vec3 getNorm(vec2 pos_screen); - -vec4 texture2DLodSpecular(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); - - d *= min(1, d * (proj_lod - lod)); - - float edge = 0.25*det; - - ret *= clamp(d/edge, 0.0, 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; -} +void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float nh, out float nl, out float nv, out float vh, out float lightDist); +float calcLegacyDistanceAttenuation(float distance, float falloff); +bool clipProjectedLightVars(vec3 center, vec3 pos, out float dist, out float l_dist, out vec3 lv, out vec4 proj_tc ); +vec4 getNormalEnvIntensityFlags(vec2 screenpos, out vec3 n, out float envIntensity); +vec3 getProjectedLightAmbiance(float amb_da, float attenuation, float lit, float nl, float noise, vec2 projected_uv); +vec3 getProjectedLightDiffuseColor(float light_distance, vec2 projected_uv ); +vec3 getProjectedLightSpecularColor(vec3 pos, vec3 n); +vec2 getScreenXY(vec4 clip_point); +vec3 srgb_to_linear(vec3 c); +vec4 texture2DLodSpecular(vec2 tc, float lod); -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(vec2 pos_screen); +const float M_PI = 3.14159265; -vec4 getPosition(vec2 pos_screen); +vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, + float perceptualRoughness, + float metallic, + vec3 n, // normal + vec3 v, // surface point to camera + vec3 l); //surface point to light -void main() +void main() { - vec4 frag = vary_fragcoord; - frag.xyz /= frag.w; - frag.xyz = frag.xyz*0.5+0.5; - frag.xy *= screen_res; - - vec3 pos = getPosition(frag.xy).xyz; - vec3 lv = trans_center.xyz-pos.xyz; - float dist = length(lv); - dist /= size; - if (dist > 1.0) +#if defined(LOCAL_LIGHT_KILL) + discard; +#else + vec3 final_color = vec3(0,0,0); + vec2 tc = getScreenXY(vary_fragcoord); + vec3 pos = getPosition(tc).xyz; + + vec3 lv; + vec4 proj_tc; + float dist, l_dist; + if (clipProjectedLightVars(trans_center, pos, dist, l_dist, lv, proj_tc)) { discard; } - + float shadow = 1.0; - + if (proj_shadow_idx >= 0) { - vec4 shd = texture2DRect(lightMap, frag.xy); + vec4 shd = texture2DRect(lightMap, tc); shadow = (proj_shadow_idx == 0) ? shd.b : shd.a; shadow += shadow_fade; shadow = clamp(shadow, 0.0, 1.0); } - - vec3 norm = texture2DRect(normalMap, frag.xy).xyz; - float envIntensity = norm.z; - norm = getNorm(frag.xy); - - 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) - { - discard; - } - - proj_tc.xyz /= proj_tc.w; - - float fa = (falloff*0.5) + 1.0; - float dist_atten = min(1.0 - (dist - 1.0 * (1.0 - fa)) / fa, 1.0); - dist_atten *= dist_atten; - dist_atten *= 2.0; + float envIntensity; + vec3 n; + vec4 norm = getNormalEnvIntensityFlags(tc, n, envIntensity); // need `norm.w` for GET_GBUFFER_FLAG() + + float dist_atten = calcLegacyDistanceAttenuation(dist, falloff); if (dist_atten <= 0.0) { discard; } - - lv = proj_origin-pos.xyz; - lv = normalize(lv); - float da = dot(norm, lv); - - vec3 col = vec3(0,0,0); - - vec3 diff_tex = srgb_to_linear(texture2DRect(diffuseRect, frag.xy).rgb); - - vec4 spec = texture2DRect(specularRect, frag.xy); - vec3 dlit = vec3(0, 0, 0); + lv = proj_origin-pos.xyz; // NOTE: Re-using lv + vec3 h, l, v = -normalize(pos); + float nh, nl, nv, vh, lightDist; + calcHalfVectors(lv, n, v, h, l, nh, nl, nv, vh, lightDist); - 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) + vec3 diffuse = texture2DRect(diffuseRect, tc).rgb; + vec4 spec = texture2DRect(specularRect, tc); + vec3 dlit = vec3(0, 0, 0); + vec3 slit = vec3(0, 0, 0); + + vec3 amb_rgb = vec3(0); + if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR)) { - float amb_da = proj_ambiance; - float lit = 0.0; + vec3 colorEmissive = texture2DRect(emissiveRect, tc).rgb; + vec3 orm = spec.rgb; + float perceptualRoughness = orm.g; + float metallic = orm.b; + vec3 f0 = vec3(0.04); + vec3 baseColor = diffuse.rgb; - if (da > 0.0) + vec3 diffuseColor = baseColor.rgb*(vec3(1.0)-f0); + diffuseColor *= 1.0 - metallic; + + vec3 specularColor = mix(f0, baseColor.rgb, metallic); + + // We need this additional test inside a light's frustum since a spotlight's ambiance can be applied + if (proj_tc.x > 0.0 && proj_tc.x < 1.0 + && proj_tc.y > 0.0 && proj_tc.y < 1.0) { - lit = da * dist_atten * noise; + float lit = 0.0; + float amb_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); - - dlit = color.rgb * plcol.rgb * plcol.a; - - col = dlit*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)*(1.0-shadow)*proj_ambiance; + if (nl > 0.0) + { + amb_da += (nl*0.5 + 0.5) * proj_ambiance; - amb_da *= dist_atten * noise; - - amb_da = min(amb_da, 1.0-lit); - - col += amb_da*color.rgb*diff_tex.rgb*amb_plcol.rgb*amb_plcol.a; - } - + dlit = getProjectedLightDiffuseColor( l_dist, proj_tc.xy ); - if (spec.a > 0.0) + vec3 intensity = dist_atten * dlit * 3.0 * shadow; // Legacy attenuation + final_color += intensity*pbrPunctual(diffuseColor, specularColor, perceptualRoughness, metallic, n.xyz, v, normalize(lv)); + } + + amb_rgb = getProjectedLightAmbiance( amb_da, dist_atten, lit, nl, 1.0, proj_tc.xy ); + final_color += diffuse.rgb * amb_rgb; + } + } + else { - dlit *= min(da*6.0, 1.0) * dist_atten; - vec3 npos = -normalize(pos); - - //vec3 ref = dot(pos+lv, norm); - vec3 h = normalize(lv+npos); - float nh = dot(norm, h); - float nv = dot(norm, npos); - float vh = dot(npos, h); - float sa = nh; - float fres = pow(1 - dot(h, npos), 5)*0.4+0.5; - - float gtdenom = 2 * nh; - float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh)); - - if (nh > 0.0) + diffuse = srgb_to_linear(diffuse); + spec.rgb = srgb_to_linear(spec.rgb); + + float noise = texture2D(noiseMap, tc/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 scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da); - col += dlit*scol*spec.rgb*shadow; + float amb_da = proj_ambiance; + float lit = 0.0; + + if (nl > 0.0) + { + lit = nl * dist_atten * noise; + + dlit = getProjectedLightDiffuseColor( l_dist, proj_tc.xy ); + + final_color = dlit*lit*diffuse*shadow; + + amb_da += (nl*0.5+0.5) /* * (1.0-shadow) */ * proj_ambiance; + } + + vec3 amb_rgb = getProjectedLightAmbiance( amb_da, dist_atten, lit, nl, noise, proj_tc.xy ); + final_color += diffuse.rgb*amb_rgb; + #if DEBUG_LEG_LIGHT_TYPE + final_color = vec3(0,0.5,0); + #endif } - } - - if (envIntensity > 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) + if (spec.a > 0.0) + { + dlit *= min(nl*6.0, 1.0) * dist_atten; + float fres = pow(1 - dot(h, v), 5)*0.4+0.5; + + float gtdenom = 2 * nh; + float gt = max(0, min(gtdenom * nv / vh, gtdenom * nl / vh)); + + if (nh > 0.0) + { + float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*nl); + vec3 speccol = dlit*scol*spec.rgb*shadow; + speccol = clamp(speccol, vec3(0), vec3(1)); + final_color += speccol; + } + } + + if (envIntensity > 0.0) { - vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds; - - vec4 stc = (proj_mat * vec4(pfinal.xyz, 1.0)); + vec3 ref = reflect(normalize(pos), n); - if (stc.z > 0.0) + //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) { - stc /= stc.w; - - if (stc.x < 1.0 && - stc.y < 1.0 && - stc.x > 0.0 && - stc.y > 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) { - col += color.rgb * texture2DLodSpecular(projectionMap, stc.xy, (1 - spec.a) * (proj_lod * 0.6)).rgb * shadow * envIntensity; + stc /= stc.w; + + if (stc.x < 1.0 && + stc.y < 1.0 && + stc.x > 0.0 && + stc.y > 0.0) + { + final_color += color.rgb * texture2DLodSpecular(stc.xy, (1 - spec.a) * (proj_lod * 0.6)).rgb * shadow * envIntensity; + } } } } } - + +#if DEBUG_PBR_SPOT_DIFFUSE + final_color = vec3(nl * dist_atten); +#endif +#if DEBUG_SPOT_NL + final_color = vec3(nl); +#endif +#if DEBUG_SPOT_ZERO + final_color = vec3(0,0,0); +#endif +#if DEBUG_ANY_LIGHT_TYPE + final_color = vec3(0,0.3333,0); +#endif + //not sure why, but this line prevents MATBUG-194 - col = max(col, vec3(0.0)); + final_color = max(final_color, vec3(0.0)); - frag_color.rgb = col; + //output linear colors as gamma correction happens down stream + frag_color.rgb = final_color; frag_color.a = 0.0; +#endif // LOCAL_LIGHT_KILL } |