2 files changed, 58 insertions, 7 deletions
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 50632a7b07..c455b6f5f1 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -7716,6 +7716,28 @@
     <key>Value</key>
     <integer>0</integer>
   </map>
+  <key>RenderMinFreeMainMemoryThreshold</key>
+  <map>
+    <key>Comment</key>
+    <string>Minimum of available physical memory in MB before textures get scaled down</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>U32</string>
+    <key>Value</key>
+    <integer>512</integer>
+  </map>
+  <key>RenderLowMemMinDiscardIncrement</key>
+  <map>
+    <key>Comment</key>
+    <string>Minimum increment of discard level if system memory gets low</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>F32</string>
+    <key>Value</key>
+    <real>0.1</real>
+  </map>
   <key>RenderMaxTextureIndex</key>
   <map>
     <key>Comment</key>
@@ -13065,7 +13087,7 @@
       <key>Type</key>
       <string>Boolean</string>
       <key>Value</key>
-      <integer>1</integer>
+      <integer>0</integer>
     </map>
     <key>AutoDisengageMic</key>
     <map>
diff --git a/indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl b/indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl
index 902746366d..6d05d983f3 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl
@@ -25,24 +25,53 @@
 
 /*[EXTRA_CODE_HERE]*/
 
+
+
+// generate a normal map using an approximation of the old emboss bump map "brightness/darkness" technique
+// srcMap is a source color image, output should be a normal
+
 out vec4 frag_color;
 
-uniform sampler2D alphaMap;
+uniform sampler2D srcMap;
 
 in vec2 vary_texcoord0;
 
 uniform float stepX;
 uniform float stepY;
 uniform float norm_scale;
+uniform int bump_code;
+
+#define BE_BRIGHTNESS 1
+#define BE_DARKNESS 2
+
+// get luminance or inverse luminance depending on bump_code
+float getBumpValue(vec2 texcoord)
+{
+    vec3 c = texture(srcMap, texcoord).rgb;
+
+    vec3 WEIGHT = vec3(0.2995, 0.5875, 0.1145);
+
+    float l = dot(c, WEIGHT);
+
+    if (bump_code == BE_DARKNESS)
+    {
+        l = 1.0 - l;
+    }
+
+    return l;
+}
+
 
 void main()
 {
-    float c = texture(alphaMap, vary_texcoord0).r;
+    float c = getBumpValue(vary_texcoord0).r;
+
+    float scaler = 512.0;
 
-    vec3 right = vec3(norm_scale, 0, (texture(alphaMap, vary_texcoord0+vec2(stepX, 0)).r-c)*255);
-    vec3 left = vec3(-norm_scale, 0, (texture(alphaMap, vary_texcoord0-vec2(stepX, 0)).r-c)*255);
-    vec3 up = vec3(0, -norm_scale, (texture(alphaMap, vary_texcoord0-vec2(0, stepY)).r-c)*255);
-    vec3 down = vec3(0, norm_scale, (texture(alphaMap, vary_texcoord0+vec2(0, stepY)).r-c)*255);
+    vec3 right = vec3(norm_scale, 0, (getBumpValue(vary_texcoord0+vec2(stepX, 0)).r-c)*scaler);
+    vec3 left = vec3(-norm_scale, 0, (getBumpValue(vary_texcoord0-vec2(stepX, 0)).r-c)*scaler);
+    vec3 up = vec3(0, -norm_scale, (getBumpValue(vary_texcoord0-vec2(0, stepY)).r-c)*scaler);
+    vec3 down = vec3(0, norm_scale, (getBumpValue(vary_texcoord0+vec2(0, stepY)).r-c)*scaler);
 
     vec3 norm = cross(right, down) + cross(down, left) + cross(left,up) + cross(up, right);