Drop emissive on old Intel GPUs (#3110)

* #3103 Add the ability to disable the emissive buffer for older GPUs with low memory bandwidth.
* #3135 Add a "vintage" mode for slower GPUs
* #2719 Fix for skies being overbrightened
* #2632 Do not apply tonemapping on legacy skies

1 files changed, 6 insertions, 3 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
index d83f5a3145..85573d3baf 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
@@ -35,7 +35,7 @@ in vec2 vary_texcoord0;
 in vec3 vary_position;
 
 void mirrorClip(vec3 pos);
-vec4 encodeNormal(vec3 norm, float gbuffer_flag);
+vec4 encodeNormal(vec3 n, float env, float gbuffer_flag);
 
 void main()
 {
@@ -44,7 +44,10 @@ void main()
     frag_data[0] = vec4(col, 0.0);
     frag_data[1] = vertex_color.aaaa; // spec
     vec3 nvn = normalize(vary_normal);
-    frag_data[2] = encodeNormal(nvn.xyz, GBUFFER_FLAG_HAS_ATMOS);
-    frag_data[3] = vec4(vertex_color.a, 0, 0, 0);
+    frag_data[2] = encodeNormal(nvn.xyz, vertex_color.a, GBUFFER_FLAG_HAS_ATMOS);
+
+#if defined(HAS_EMISSIVE)
+    frag_data[3] = vec4(0, 0, 0, 0);
+#endif
 }