DRTVWR-559 Fix for irradiance maps going black at 128x128 radiance map resolution. Improve radiance map anti-aliasing and default to 128x128 everywhere.

4 files changed, 62 insertions, 57 deletions

diff --git a/indra/newview/app_settings/shaders/class1/interface/gaussianF.glsl b/indra/newview/app_settings/shaders/class1/interface/gaussianF.glsl
new file mode 100644
index 0000000000..8e341503f5
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/gaussianF.glsl
@@ -0,0 +1,53 @@
+/** 
+ * @file gaussianF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, 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
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+
+uniform float resScale;
+
+// texture direction, will be <1, 0> or <0, 1>
+uniform vec2 direction;
+
+in vec2 vary_texcoord0;
+
+// get linear depth value given a depth buffer sample d and znear and zfar values
+float linearDepth(float d, float znear, float zfar);
+
+void main() 
+{
+    vec3 col = vec3(0,0,0);
+
+    float w[] = { 0.0002, 0.0060, 0.0606, 0.2417, 0.3829, 0.2417, 0.0606, 0.0060, 0.0002 };
+    
+    for (int i = 0; i < 9; ++i)
+    {
+        vec2 tc = vary_texcoord0 + (i-4)*direction*resScale;
+        col += texture(diffuseRect, tc).rgb * w[i];
+    }
+
+    frag_color = vec4(col, 0.0);
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/reflectionmipF.glsl b/indra/newview/app_settings/shaders/class1/interface/reflectionmipF.glsl
index a9c28b2974..9f7706fe36 100644
--- a/indra/newview/app_settings/shaders/class1/interface/reflectionmipF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/reflectionmipF.glsl
@@ -23,18 +23,8 @@
  * $/LicenseInfo$
  */
  
-#extension GL_ARB_texture_rectangle : enable
-
-/*[EXTRA_CODE_HERE]*/
-
-#ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
 
-// NOTE screenMap should always be texture channel 0 and 
-// depthmap should always be channel 1
 uniform sampler2D diffuseRect;
 uniform sampler2D depthMap;
 
@@ -42,48 +32,13 @@ uniform float resScale;
 uniform float znear;
 uniform float zfar;
 
-VARYING vec2 vary_texcoord0;
+in vec2 vary_texcoord0;
 
 // get linear depth value given a depth buffer sample d and znear and zfar values
 float linearDepth(float d, float znear, float zfar);
 
 void main() 
 {
-#if 0
-    float w[9];
-
-    float c = 1.0/16.0;  //corner weight
-    float e = 1.0/8.0; //edge weight
-    float m = 1.0/4.0; //middle weight
-
-    //float wsum = c*4+e*4+m;
-
-    w[0] = c;   w[1] = e;    w[2] = c;
-    w[3] = e;    w[4] = m;     w[5] = e;
-    w[6] = c;   w[7] = e;    w[8] = c;
-    
-    vec2 tc[9];
-
-    float ed = 1;
-    float cd = 1;
-
-
-    tc[0] = vec2(-cd, cd);    tc[1] = vec2(0, ed);    tc[2] = vec2(cd, cd);
-    tc[3] = vec2(-ed, 0);    tc[4] = vec2(0, 0);    tc[5] = vec2(ed, 0);
-    tc[6] = vec2(-cd, -cd);    tc[7] = vec2(0, -ed);   tc[8] = vec2(cd, -1);
-
-    vec3 color = vec3(0,0,0);
-
-    for (int i = 0; i < 9; ++i)
-    {
-        color += texture2D(screenMap, vary_texcoord0.xy+tc[i]).rgb * w[i];
-        //color += texture2D(screenMap, vary_texcoord0.xy+tc[i]*2.0).rgb * w[i]*0.5;
-    }
-
-    //color /= wsum;
-
-    frag_color = vec4(color, 1.0);
-#else
     float depth = texture(depthMap, vary_texcoord0.xy).r;
     float dist = linearDepth(depth, znear, zfar);
 
@@ -94,7 +49,6 @@ void main()
     v = normalize(v);
     dist /= v.z;
 
-    vec3 col = texture2D(diffuseRect, vary_texcoord0.xy).rgb;
-    frag_color = vec4(col, dist/256.0); 
-#endif
+    vec3 col = texture(diffuseRect, vary_texcoord0.xy).rgb;
+    frag_color = vec4(col, dist/256.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/splattexturerectV.glsl b/indra/newview/app_settings/shaders/class1/interface/splattexturerectV.glsl
index 641d670c26..edc0a9628b 100644
--- a/indra/newview/app_settings/shaders/class1/interface/splattexturerectV.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/splattexturerectV.glsl
@@ -25,17 +25,16 @@
 
 uniform mat4 modelview_projection_matrix;
 
-ATTRIBUTE vec3 position;
-ATTRIBUTE vec2 texcoord0;
-ATTRIBUTE vec4 diffuse_color;
+in vec3 position;
+in vec4 diffuse_color;
 
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
+out vec4 vertex_color;
+out vec2 vary_texcoord0;
 
 void main()
 {
 	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
-	vary_texcoord0 = texcoord0;
+	vary_texcoord0 = position.xy*0.5+0.5;
 	vertex_color = diffuse_color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/interface/irradianceGenF.glsl b/indra/newview/app_settings/shaders/class2/interface/irradianceGenF.glsl
index c7da23fb00..baf68e11f4 100644
--- a/indra/newview/app_settings/shaders/class2/interface/irradianceGenF.glsl
+++ b/indra/newview/app_settings/shaders/class2/interface/irradianceGenF.glsl
@@ -176,7 +176,6 @@ float computeLod(float pdf)
 
 vec4 filterColor(vec3 N)
 {
-    //return  textureLod(uCubeMap, N, 3.0).rgb;
     vec4 color = vec4(0.f);
     
     for(int i = 0; i < u_sampleCount; ++i)
@@ -192,7 +191,7 @@ vec4 filterColor(vec3 N)
         // apply the bias to the lod
         lod += u_lodBias;
 
-        lod = clamp(lod, 0, 7);
+        lod = clamp(lod, 0, max_probe_lod);
         // sample lambertian at a lower resolution to avoid fireflies
         vec4 lambertian = textureLod(reflectionProbes, vec4(H, sourceIdx), lod);