summaryrefslogtreecommitdiff
path: root/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
diff options
context:
space:
mode:
Diffstat (limited to 'indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl')
-rw-r--r--indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl351
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
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 20:12:47 +0000