2590 mac intel and radeon pro 5300m horrible fps 2 (#3030)

* OpenGL 3.3 compatibility pass.  Fix for FBO driven downscaling corrupting textures.
* Increase maximum texture bias, immediately scale down when textures are loaded higher resolution than desired
* #2590 Fix for some frame stalls on Intel Macs

2 files changed, 4 insertions, 1 deletions

diff --git a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
index 26ab0406f6..3c13144299 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
@@ -51,6 +51,7 @@ uniform mat3 normal_matrix;
 in vec3 vary_position;
 
 void mirrorClip(vec3 pos);
+vec4 encodeNormal(vec3 norm, float gbuffer_flag);
 
 #if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 
@@ -414,7 +415,7 @@ void main()
 
     frag_data[0] = max(vec4(diffcol.rgb, emissive), vec4(0));        // gbuffer is sRGB for legacy materials
     frag_data[1] = max(vec4(spec.rgb, glossiness), vec4(0));           // XYZ = Specular color. W = Specular exponent.
-    frag_data[2] = vec4(norm, flag);   // XY = Normal.  Z = Env. intensity. W = 1 skip atmos (mask off fog)
+    frag_data[2] = encodeNormal(norm, flag);   // XY = Normal.  Z = Env. intensity. W = 1 skip atmos (mask off fog)
     frag_data[3] = vec4(env, 0, 0, 0);
 
 #endif
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index ca88fe7482..a9b299cfd7 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -27,6 +27,8 @@
 
 out vec4 frag_color;
 
+vec4 decodeNormal(vec4 norm);
+
 uniform sampler2D diffuseRect;
 uniform sampler2D specularRect;
 uniform sampler2D emissiveRect; // PBR linear packed Occlusion, Roughness, Metal. See: pbropaqueF.glsl