SL-18229 Fix for PBR materials on HUDs misbehaving. Incidental decruft.

14 files changed, 195 insertions, 552 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
index a2ad1b70fb..597ab22f42 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
@@ -23,10 +23,10 @@
  * $/LicenseInfo$
  */
 
-#define DIFFUSE_ALPHA_MODE_IGNORE 0
-#define DIFFUSE_ALPHA_MODE_BLEND 1
-#define DIFFUSE_ALPHA_MODE_MASK 2
-#define DIFFUSE_ALPHA_MODE_EMISSIVE 3
+
+#ifndef IS_HUD
+
+// default alpha implementation
 
 #ifdef HAS_SKIN
 uniform mat4 modelview_matrix;
@@ -38,13 +38,12 @@ uniform mat4 modelview_projection_matrix;
 #endif
 uniform mat4 texture_matrix0;
 
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
-  #if !defined(HAS_SKIN)
-    uniform mat4 modelview_matrix;
-  #endif
-    VARYING vec3 vary_position;
+#if !defined(HAS_SKIN)
+uniform mat4 modelview_matrix;
 #endif
 
+out vec3 vary_position;
+
 uniform mat3 texture_basecolor_matrix;
 uniform mat3 texture_normal_matrix;
 uniform mat3 texture_metallic_roughness_matrix;
@@ -79,9 +78,7 @@ void main()
 	mat4 mat = getObjectSkinnedTransform();
 	mat = modelview_matrix * mat;
 	vec3 pos = (mat*vec4(position.xyz,1.0)).xyz;
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 	vary_position = pos;
-#endif
     vec4 vert = projection_matrix * vec4(pos,1.0);
 #else
 	//transform vertex
@@ -112,9 +109,45 @@ void main()
 
 	vertex_color = diffuse_color;
 
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
-  #if !defined(HAS_SKIN)
+#if !defined(HAS_SKIN)
 	vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
-  #endif
 #endif
 }
+
+#else
+
+// fullbright HUD alpha implementation
+
+uniform mat4 modelview_projection_matrix;
+
+uniform mat4 texture_matrix0;
+
+uniform mat4 modelview_matrix;
+
+out vec3 vary_position;
+
+uniform mat3 texture_basecolor_matrix;
+uniform mat3 texture_emissive_matrix;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec2 basecolor_texcoord;
+out vec2 emissive_texcoord;
+
+out vec4 vertex_color;
+
+void main()
+{
+	//transform vertex
+    vec4 vert = modelview_projection_matrix * vec4(position.xyz, 1.0);
+    gl_Position = vert;
+
+	basecolor_texcoord = (texture_matrix0 * vec4(texture_basecolor_matrix * vec3(texcoord0,1), 1)).xy;
+	emissive_texcoord = (texture_matrix0 * vec4(texture_emissive_matrix * vec3(texcoord0,1), 1)).xy;
+
+	vertex_color = diffuse_color;
+}
+
+#endif
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
index 39419e9d78..483ce4c3d0 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
@@ -25,6 +25,11 @@
 
 /*[EXTRA_CODE_HERE]*/
 
+
+#ifndef IS_HUD
+
+// deferred opaque implementation 
+
 uniform sampler2D diffuseMap;  //always in sRGB space
 
 uniform float metallicFactor;
@@ -101,3 +106,47 @@ void main()
     frag_data[2] = vec4(encode_normal(tnorm), vertex_color.a, GBUFFER_FLAG_HAS_PBR); // normal, environment intensity, flags
     frag_data[3] = vec4(emissive,0);                                                // PBR sRGB Emissive
 }
+
+#else
+
+// forward fullbright implementation for HUDs
+
+uniform sampler2D diffuseMap;  //always in sRGB space
+
+uniform vec3 emissiveColor;
+uniform sampler2D emissiveMap;
+
+out vec4 frag_color;
+
+in vec3 vary_position;
+in vec4 vertex_color;
+
+in vec2 basecolor_texcoord;
+in vec2 emissive_texcoord;
+
+uniform float minimum_alpha; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
+
+vec3 linear_to_srgb(vec3 c);
+vec3 srgb_to_linear(vec3 c);
+
+void main()
+{
+    vec4 basecolor = texture2D(diffuseMap, basecolor_texcoord.xy).rgba;
+    if (basecolor.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    vec3 col = vertex_color.rgb * srgb_to_linear(basecolor.rgb);
+
+    vec3 emissive = emissiveColor;
+    emissive *= srgb_to_linear(texture2D(emissiveMap, emissive_texcoord.xy).rgb);
+
+    col += emissive;
+
+    // HUDs are rendered after gamma correction, output in sRGB space
+    frag_color.rgb = linear_to_srgb(col);
+    frag_color.a = 0.0;
+}
+
+#endif
\ No newline at end of file
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl
index 5a69da641a..8320640e42 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl
@@ -23,10 +23,10 @@
  * $/LicenseInfo$
  */
 
-#define DIFFUSE_ALPHA_MODE_IGNORE 0
-#define DIFFUSE_ALPHA_MODE_BLEND 1
-#define DIFFUSE_ALPHA_MODE_MASK 2
-#define DIFFUSE_ALPHA_MODE_EMISSIVE 3
+
+#ifndef IS_HUD
+
+//deferred opaque implementation
 
 #ifdef HAS_SKIN
 uniform mat4 modelview_matrix;
@@ -95,3 +95,40 @@ void main()
 	
 	vertex_color = diffuse_color;
 }
+
+#else 
+
+// fullbright HUD implementation
+
+uniform mat4 modelview_projection_matrix;
+
+uniform mat4 texture_matrix0;
+
+uniform mat3 texture_basecolor_matrix;
+uniform mat3 texture_normal_matrix;
+uniform mat3 texture_metallic_roughness_matrix;
+uniform mat3 texture_emissive_matrix;
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+
+out vec2 basecolor_texcoord;
+out vec2 emissive_texcoord;
+ 
+out vec4 vertex_color;
+
+void main()
+{
+    //transform vertex
+    gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0); 
+
+    basecolor_texcoord = (texture_matrix0 * vec4(texture_basecolor_matrix * vec3(texcoord0,1), 1)).xy;
+    emissive_texcoord = (texture_matrix0 * vec4(texture_emissive_matrix * vec3(texcoord0,1), 1)).xy;
+
+    vertex_color = diffuse_color;
+}
+
+#endif
+
+
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightAlphaMaskF.glsl
deleted file mode 100644
index 00749213db..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightAlphaMaskF.glsl
+++ /dev/null
@@ -1,59 +0,0 @@
-/** 
- * @file class1\lighting\lightFullbrightAlphaMaskF.glsl
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform float minimum_alpha;
-uniform float texture_gamma; // either 1.0 or 2.2; see: "::TEXTURE_GAMMA"
-
-vec3 fullbrightAtmosTransport(vec3 light);
-vec3 fullbrightScaleSoftClip(vec3 light);
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-void fullbright_lighting()
-{
-	vec4 color = diffuseLookup(vary_texcoord0.xy);
-	
-	if (color.a < minimum_alpha)
-	{
-		discard;
-	}
-
-	color *= vertex_color;
-
-	color.rgb = pow(color.rgb, vec3(texture_gamma));
-
-	color.rgb = fullbrightAtmosTransport(color.rgb);
-	color.rgb = fullbrightScaleSoftClip(color.rgb);
-
-	frag_color = color;
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightF.glsl
deleted file mode 100644
index b9dc332043..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightF.glsl
+++ /dev/null
@@ -1,54 +0,0 @@
-/** 
- * @file class1\lighting\lightFullbrightF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-uniform float texture_gamma;
-
-vec3 fullbrightAtmosTransport(vec3 light);
-vec3 fullbrightScaleSoftClip(vec3 light);
-
-void fullbright_lighting()
-{
-	vec4 color = diffuseLookup(vary_texcoord0.xy) * vertex_color;
-	
-	color.rgb = pow(color.rgb, vec3(texture_gamma));
-
-	color.rgb = fullbrightAtmosTransport(color.rgb);
-	color.rgb = fullbrightScaleSoftClip(color.rgb);
-
-	color.rgb = pow(color.rgb, vec3(1.0/texture_gamma));
-
-	frag_color = color;
-
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl
deleted file mode 100644
index e8e71beb44..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl
+++ /dev/null
@@ -1,63 +0,0 @@
-/** 
- * @file class1\lighting\lightFullbrightNonIndexedAlphaMaskF.glsl
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform float minimum_alpha;
-uniform float texture_gamma;
-
-vec3 fullbrightAtmosTransport(vec3 light);
-vec3 fullbrightScaleSoftClip(vec3 light);
-
-uniform sampler2D diffuseMap;
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-void fullbright_lighting()
-{
-	vec4 color = texture2D(diffuseMap,vary_texcoord0.xy);
-	
-	if (color.a < minimum_alpha)
-	{
-		discard;
-	}
-	
-	color.rgb *= vertex_color.rgb;
-
-	color.rgb = pow(color.rgb, vec3(texture_gamma));
-	color.rgb = fullbrightAtmosTransport(color.rgb);
-	
-	color.rgb = fullbrightScaleSoftClip(color.rgb);
-
-	color.rgb = pow(color.rgb, vec3(1.0/texture_gamma));
-
-	frag_color = color;
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedF.glsl
deleted file mode 100644
index 11a0919086..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedF.glsl
+++ /dev/null
@@ -1,50 +0,0 @@
-/** 
- * @file class1\lighting\lightFullbrightF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-vec3 fullbrightAtmosTransport(vec3 light);
-vec3 fullbrightScaleSoftClip(vec3 light);
-
-uniform sampler2D diffuseMap;
-
-void fullbright_lighting()
-{
-	vec4 color = texture2D(diffuseMap,vary_texcoord0.xy) * vertex_color;
-	
-	color.rgb = fullbrightAtmosTransport(color.rgb);
-	
-	color.rgb = fullbrightScaleSoftClip(color.rgb);
-
-	frag_color = color;
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterAlphaMaskF.glsl
deleted file mode 100644
index 37cac5f437..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterAlphaMaskF.glsl
+++ /dev/null
@@ -1,57 +0,0 @@
-/** 
- * @file class1\lighting\lightFullbrightWaterAlphaMaskF.glsl
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform float minimum_alpha;
-
-/* vec4 diffuseLookup(vec2 texcoord); */
-
-vec3 fullbrightAtmosTransport(vec3 light);
-vec4 applyWaterFog(vec4 color);
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-void fullbright_lighting_water()
-{
-	vec4 color = diffuseLookup(vary_texcoord0.xy);
-
-	if (color.a < minimum_alpha)
-	{
-		discard;
-	}
-
-	color.rgb *= vertex_color.rgb;
-
-	color.rgb = fullbrightAtmosTransport(color.rgb);
-	
-	frag_color = applyWaterFog(color);
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterF.glsl
deleted file mode 100644
index 27880b720c..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterF.glsl
+++ /dev/null
@@ -1,48 +0,0 @@
-/** 
- * @file class1\lighting\lightFullbrightWaterF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-/* vec4 diffuseLookup(vec2 texcoord); */
-
-vec3 fullbrightAtmosTransport(vec3 light);
-vec4 applyWaterFog(vec4 color);
-
-void fullbright_lighting_water()
-{
-	vec4 color = diffuseLookup(vary_texcoord0.xy) * vertex_color;
-
-	color.rgb = fullbrightAtmosTransport(color.rgb);
-	
-	frag_color = applyWaterFog(color);
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl
deleted file mode 100644
index c98db4795c..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl
+++ /dev/null
@@ -1,57 +0,0 @@
-/** 
- * @file class1\lighting\lightFullbrightWaterNonIndexedAlphaMaskF.glsl
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform float minimum_alpha;
-
-uniform sampler2D diffuseMap;
-
-vec3 fullbrightAtmosTransport(vec3 light);
-vec4 applyWaterFog(vec4 color);
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-void fullbright_lighting_water()
-{
-	vec4 color = texture2D(diffuseMap, vary_texcoord0.xy);
-
-	if (color.a < minimum_alpha)
-	{
-		discard;
-	}
-
-	color.rgb *= vertex_color.rgb;
-
-	color.rgb = fullbrightAtmosTransport(color.rgb);
-	
-	frag_color = applyWaterFog(color);
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedF.glsl
deleted file mode 100644
index e9fd8ac820..0000000000
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedF.glsl
+++ /dev/null
@@ -1,48 +0,0 @@
-/** 
- * @file class1\lighting\lightFullbrightWaterF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-uniform sampler2D diffuseMap;
-
-vec3 fullbrightAtmosTransport(vec3 light);
-vec4 applyWaterFog(vec4 color);
-
-void fullbright_lighting_water()
-{
-	vec4 color = texture2D(diffuseMap, vary_texcoord0.xy) * vertex_color;
-
-	color.rgb = fullbrightAtmosTransport(color.rgb);
-	
-	frag_color = applyWaterFog(color);
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/objects/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/objects/fullbrightF.glsl
deleted file mode 100644
index 31a262f1db..0000000000
--- a/indra/newview/app_settings/shaders/class1/objects/fullbrightF.glsl
+++ /dev/null
@@ -1,33 +0,0 @@
-/** 
- * @file objects/fullbrightF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$F
- */
- 
-
-
-void fullbright_lighting();
-
-void main() 
-{
-	fullbright_lighting();
-}
diff --git a/indra/newview/app_settings/shaders/class1/objects/fullbrightV.glsl b/indra/newview/app_settings/shaders/class1/objects/fullbrightV.glsl
deleted file mode 100644
index 5af42f1fcf..0000000000
--- a/indra/newview/app_settings/shaders/class1/objects/fullbrightV.glsl
+++ /dev/null
@@ -1,65 +0,0 @@
-/**
- * @file fullbrightV.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
-
-uniform mat4 texture_matrix0;
-uniform mat4 modelview_matrix;
-uniform mat4 modelview_projection_matrix;
- 
-ATTRIBUTE vec3 position;
-void passTextureIndex();
-ATTRIBUTE vec2 texcoord0;
-ATTRIBUTE vec3 normal;
-ATTRIBUTE vec4 diffuse_color;
-
-void calcAtmospherics(vec3 inPositionEye);
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-#ifdef HAS_SKIN
-mat4 getObjectSkinnedTransform();
-uniform mat4 projection_matrix;
-#endif
-
-void main()
-{
-	//transform vertex
-	vec4 vert = vec4(position.xyz,1.0);
-	passTextureIndex();
-#ifdef HAS_SKIN
-    mat4 mat = getObjectSkinnedTransform();
-    mat = modelview_matrix * mat;
-    vec4 pos = mat * vert;
-    gl_Position = projection_matrix * pos;
-#else
-    vec4 pos = (modelview_matrix * vert);
-	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
-#endif
-	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
-	
-	calcAtmospherics(pos.xyz);
-
-	vertex_color = diffuse_color;
-}
diff --git a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
index 35e22ef3a2..35ccc65a8e 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
@@ -25,6 +25,8 @@
 
 /*[EXTRA_CODE_HERE]*/
 
+#ifndef IS_HUD
+
 uniform sampler2D diffuseMap;  //always in sRGB space
 uniform sampler2D bumpMap;
 uniform sampler2D emissiveMap;
@@ -249,3 +251,59 @@ void main()
     a += f;
     frag_color = vec4(color.rgb,a);
 }
+
+#else
+
+uniform sampler2D diffuseMap;  //always in sRGB space
+uniform sampler2D emissiveMap;
+
+uniform vec3 emissiveColor;
+
+out vec4 frag_color;
+
+in vec3 vary_position;
+
+in vec2 basecolor_texcoord;
+in vec2 emissive_texcoord;
+
+in vec4 vertex_color;
+
+#ifdef HAS_ALPHA_MASK
+uniform float minimum_alpha; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
+#endif
+
+vec3 srgb_to_linear(vec3 c);
+vec3 linear_to_srgb(vec3 c);
+
+
+void main()
+{
+    vec3 color = vec3(0,0,0);
+
+    vec3  pos         = vary_position;
+
+    vec4 basecolor = texture(diffuseMap, basecolor_texcoord.xy).rgba;
+    basecolor.rgb = srgb_to_linear(basecolor.rgb);
+#ifdef HAS_ALPHA_MASK
+    if (basecolor.a < minimum_alpha)
+    {
+        discard;
+    }
+#endif
+
+    color = vertex_color.rgb * basecolor.rgb;
+
+    // emissiveColor is the emissive color factor from GLTF and is already in linear space
+    vec3 colorEmissive = emissiveColor;
+    // emissiveMap here is a vanilla RGB texture encoded as sRGB, manually convert to linear
+    colorEmissive *= srgb_to_linear(texture2D(emissiveMap, emissive_texcoord.xy).rgb);
+
+    
+    float a = basecolor.a*vertex_color.a;
+    a = 1.0;
+    color += colorEmissive;
+    color = linear_to_srgb(color);
+    frag_color = vec4(color.rgb,a);
+}
+
+#endif