#677 WIP -- add mirror clipping to more shaders

8 files changed, 71 insertions, 26 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl b/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
index 35f483f633..a22c174349 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
@@ -37,11 +37,15 @@ in vec3 vary_mat2;
 
 in vec4 vertex_color;
 in vec2 vary_texcoord0;
+in vec3 vary_position;
 
 vec2 encode_normal(vec3 n);
 
+void mirrorClip(vec3 pos);
 void main() 
 {
+    mirrorClip(vary_position);
+
 	vec4 col = texture(diffuseMap, vary_texcoord0.xy);
 	
 	if(col.a < minimum_alpha)
diff --git a/indra/newview/app_settings/shaders/class1/deferred/bumpV.glsl b/indra/newview/app_settings/shaders/class1/deferred/bumpV.glsl
index 3af2eab1e4..74319349f6 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/bumpV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/bumpV.glsl
@@ -23,6 +23,7 @@
  * $/LicenseInfo$
  */
 
+uniform mat4 modelview_matrix;
 uniform mat3 normal_matrix;
 uniform mat4 texture_matrix0;
 uniform mat4 modelview_projection_matrix;
@@ -38,11 +39,11 @@ out vec3 vary_mat1;
 out vec3 vary_mat2;
 out vec4 vertex_color;
 out vec2 vary_texcoord0;
+out vec3 vary_position;
 
 #ifdef HAS_SKIN
 mat4 getObjectSkinnedTransform();
 uniform mat4 projection_matrix;
-uniform mat4 modelview_matrix;
 #endif
 
 void main()
@@ -52,11 +53,13 @@ void main()
     mat4 mat = getObjectSkinnedTransform();
 	mat = modelview_matrix * mat;
 	vec3 pos = (mat*vec4(position.xyz, 1.0)).xyz;
+    vary_position = pos;
 	gl_Position = projection_matrix*vec4(pos, 1.0);
 
 	vec3 n = normalize((mat * vec4(normal.xyz+position.xyz, 1.0)).xyz-pos.xyz);
 	vec3 t = normalize((mat * vec4(tangent.xyz+position.xyz, 1.0)).xyz-pos.xyz);
 #else
+    vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
 	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0); 
 	vec3 n = normalize(normal_matrix * normal);
 	vec3 t = normalize(normal_matrix * tangent.xyz);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
index 68fb8bf499..76776ede2c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
@@ -32,11 +32,14 @@ uniform sampler2D diffuseMap;
 in vec3 vary_normal;
 in vec4 vertex_color;
 in vec2 vary_texcoord0;
+in vec3 vary_position;
 
 vec2 encode_normal(vec3 n);
+void mirrorClip(vec3 pos);
 
 void main() 
 {
+    mirrorClip(vary_position);
 	vec3 col = vertex_color.rgb * texture(diffuseMap, vary_texcoord0.xy).rgb;
 	frag_data[0] = vec4(col, 0.0);
 	frag_data[1] = vertex_color.aaaa; // spec
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl
index 93d561504e..b983acf657 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl
@@ -30,12 +30,15 @@ out vec4 frag_data[4];
 in vec3 vary_normal;
 in vec4 vertex_color;
 in vec2 vary_texcoord0;
+in vec3 vary_position;
 
+void mirrorClip(vec3 pos);
 vec2 encode_normal(vec3 n);
 vec3 linear_to_srgb(vec3 c);
 
 void main() 
 {
+    mirrorClip(vary_position);
 	vec3 col = vertex_color.rgb * diffuseLookup(vary_texcoord0.xy).rgb;
 
 	vec3 spec;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl
index 2402cc3b70..64230dc680 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl
@@ -36,13 +36,16 @@ out vec3 vary_normal;
 
 out vec4 vertex_color;
 out vec2 vary_texcoord0;
+out vec3 vary_position;
 
 void passTextureIndex();
 
+uniform mat4 modelview_matrix;
+
 #ifdef HAS_SKIN
 mat4 getObjectSkinnedTransform();
 uniform mat4 projection_matrix;
-uniform mat4 modelview_matrix;
+
 #endif
 
 void main()
@@ -51,9 +54,11 @@ void main()
     mat4 mat = getObjectSkinnedTransform();
     mat = modelview_matrix * mat;
     vec4 pos = mat * vec4(position.xyz, 1.0);
+    vary_position = pos.xyz;
     gl_Position = projection_matrix * pos;
     vary_normal = normalize((mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz);
 #else
+    vary_position = (modelview_matrix * vec4(position.xyz, 1.0)).xyz;
 	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0); 
     vary_normal = normalize(normal_matrix * normal);
 #endif
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
index a6fab10791..52dfed06ae 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
@@ -50,9 +50,11 @@ void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, ou
 vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
 #endif
 
+void mirrorClip(vec3 pos);
+
 void main() 
 {
-
+    mirrorClip(vary_position);
 #ifdef IS_ALPHA
     waterClip(vary_position.xyz);
 #endif
diff --git a/indra/newview/app_settings/shaders/class1/deferred/globalF.glsl b/indra/newview/app_settings/shaders/class1/deferred/globalF.glsl
new file mode 100644
index 0000000000..7e3e7d9271
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/globalF.glsl
@@ -0,0 +1,45 @@
+/** 
+ * @file class1/deferred/globalF.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, 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
+ * $/LicenseInfo$
+ */
+
+
+ // Global helper functions included in every fragment shader
+ // DO NOT declare sampler uniforms here as OS X doesn't compile
+ // them out
+
+uniform float mirror_flag;
+uniform vec4 clipPlane;
+uniform float clipSign;
+
+void mirrorClip(vec3 pos)
+{
+    if (mirror_flag > 0)
+    {
+        if ((dot(pos.xyz, clipPlane.xyz) + clipPlane.w) < 0.0)
+        {
+                discard;
+        }
+    }
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
index 9b98a37925..0683236460 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
@@ -60,34 +60,14 @@ 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;
-            }
-        }
-    }
-}
+
+void mirrorClip(vec3 pos);
 
 uniform mat3 normal_matrix;
 
 void main()
 {
-    applyClip(vary_position);
+    mirrorClip(vary_position);
 
     vec4 basecolor = texture(diffuseMap, base_color_texcoord.xy).rgba;
     if (basecolor.a < minimum_alpha)