Tons of masking changes and tweaks.

We now support masking mirrors in the GBuffer.

We also now support the concept of one arbitrary clip plane.

DRTVWR-583

4 files changed, 62 insertions, 18 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialV.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialV.glsl
index 7cdddfe8db..65706e2c3f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialV.glsl
@@ -28,25 +28,18 @@
 #define DIFFUSE_ALPHA_MODE_MASK 2
 #define DIFFUSE_ALPHA_MODE_EMISSIVE 3
 
-#ifdef HAS_SKIN
 uniform mat4 modelview_matrix;
 uniform mat4 projection_matrix;
+uniform mat4 modelview_projection_matrix;
+
+#ifdef HAS_SKIN
 mat4 getObjectSkinnedTransform();
 #else
 uniform mat3 normal_matrix;
-uniform mat4 modelview_projection_matrix;
-#endif
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
-
-#if !defined(HAS_SKIN)
-uniform mat4 modelview_matrix;
 #endif
 
 out vec3 vary_position;
 
-#endif
-
 uniform mat4 texture_matrix0;
 
 in vec3 position;
@@ -133,10 +126,8 @@ void main()
 	
 	vertex_color = diffuse_color;
 
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 #if !defined(HAS_SKIN)
-	vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
-#endif
+	vary_position = (projection_matrix*vec4(position.xyz, 1.0)).xyz;
 #endif
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
index faa273b834..9b98a37925 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
@@ -58,10 +58,37 @@ vec2 encode_normal(vec3 n);
 vec3 linear_to_srgb(vec3 c);
 vec3 srgb_to_linear(vec3 c);
 
+uniform vec4 clipPlane;
+uniform float clipSign;
+uniform float mirror_flag;
+void applyClip(vec3 pos)
+{
+    if (mirror_flag > 0)
+    {
+        // TODO: make this less branchy
+        if (clipSign > 0)
+        {
+            if ((dot(pos.xyz, clipPlane.xyz) + clipPlane.w) < 0.0)
+            {
+                discard;
+            }
+        }
+        else
+        {
+            if ((dot(pos.xyz, clipPlane.xyz) + clipPlane.w) > 0.0)
+            {
+                discard;
+            }
+        }
+    }
+}
+
 uniform mat3 normal_matrix;
 
 void main()
 {
+    applyClip(vary_position);
+
     vec4 basecolor = texture(diffuseMap, base_color_texcoord.xy).rgba;
     if (basecolor.a < minimum_alpha)
     {
diff --git a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
index 319f2f25b7..af49e76984 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
@@ -51,6 +51,23 @@ vec3 linear_to_srgb(vec3 cs);
 vec3 legacy_adjust(vec3 c);
 vec3 legacy_adjust_fullbright(vec3 c);
 
+uniform vec4 clipPlane;
+uniform float clipSign;
+uniform float mirror_flag;
+void applyClip(vec3 pos)
+{
+    float funnyClip = 0;
+    if (mirror_flag > 0)
+    {
+            if ((dot(pos.xyz, clipPlane.xyz) + clipPlane.w) > 0.0)
+            {
+                discard;
+            }
+    }
+}
+
+in vec3 vary_position;
+
 #if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 
 out vec4 frag_color;
@@ -72,12 +89,12 @@ uniform vec4 morphFactor;
 uniform vec3 camPosLocal;
 uniform mat3 env_mat;
 
+uniform float is_mirror;
+
 uniform vec3 sun_dir;
 uniform vec3 moon_dir;
 in vec2 vary_fragcoord;
 
-in vec3 vary_position;
-
 uniform mat4 proj_mat;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
@@ -291,6 +308,7 @@ float getShadow(vec3 pos, vec3 norm)
 
 void main()
 {
+    applyClip(vary_position);
     waterClip();
 
     // diffcol == diffuse map combined with vertex color
@@ -419,9 +437,15 @@ void main()
 
 #else // mode is not DIFFUSE_ALPHA_MODE_BLEND, encode to gbuffer 
     // deferred path               // See: C++: addDeferredAttachment(), shader: softenLightF.glsl
+
+    float flag = GBUFFER_FLAG_HAS_ATMOS;
+
+    if (mirror_flag > 0)
+        flag = 1;
+
     frag_data[0] = vec4(diffcol.rgb, emissive);        // gbuffer is sRGB for legacy materials
     frag_data[1] = vec4(spec.rgb, glossiness);           // XYZ = Specular color. W = Specular exponent.
-    frag_data[2] = vec4(encode_normal(norm), env, GBUFFER_FLAG_HAS_ATMOS);;   // XY = Normal.  Z = Env. intensity. W = 1 skip atmos (mask off fog)
+    frag_data[2] = vec4(encode_normal(norm), env, flag);;   // XY = Normal.  Z = Env. intensity. W = 1 skip atmos (mask off fog)
     frag_data[3] = vec4(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 20a5ad66b6..d42388ae78 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -191,7 +191,7 @@ void main()
     vec3  irradiance = vec3(0);
     vec3  radiance  = vec3(0);
 
-    if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR))
+    if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR) || GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_MIRROR))
     {
         vec3 orm = texture(specularRect, tc).rgb;
         float perceptualRoughness = orm.g;
@@ -214,7 +214,9 @@ void main()
         color = pbrBaseLight(diffuseColor, specularColor, metallic, v, norm.xyz, perceptualRoughness, light_dir, sunlit_linear, scol, radiance, irradiance, colorEmissive, ao, additive, atten);
         
         vec3 refnormpersp = reflect(pos.xyz, norm.xyz);
-        color = textureLod(heroProbes, vec4(env_mat * refnormpersp, 0), (1.0 - gloss) * 11).xyz * specularColor;
+
+        if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_MIRROR))
+            color = textureLod(heroProbes, vec4(env_mat * refnormpersp, 0), (1.0 - gloss) * 11).xyz * specularColor;
         
         if (do_atmospherics)
         {