From 4e61152ca2fc2fdaedc9e27c4d1a16e248b59d9a Mon Sep 17 00:00:00 2001
From: RunitaiLinden <davep@lindenlab.com>
Date: Mon, 5 Feb 2024 12:00:38 -0600
Subject: #677 Add clipping to trees and alpha masked blinn-phong

---
 .../app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl     | 6 ++++++
 .../shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl           | 5 +++++
 indra/newview/app_settings/shaders/class1/deferred/treeF.glsl       | 3 +++
 indra/newview/app_settings/shaders/class1/deferred/treeV.glsl       | 4 ++++
 indra/newview/llviewershadermgr.cpp                                 | 3 +++
 5 files changed, 21 insertions(+)

(limited to 'indra/newview')

diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl
index 6f3b94f734..e8ead91504 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl
@@ -31,14 +31,20 @@ uniform float minimum_alpha;
 
 uniform sampler2D diffuseMap;
 
+in vec3 vary_position;
+
 in vec3 vary_normal;
 in vec4 vertex_color;
 in vec2 vary_texcoord0;
 
 vec2 encode_normal(vec3 n);
 
+void mirrorClip(vec3 pos);
+
 void main() 
 {
+    mirrorClip(vary_position);
+
 	vec4 col = texture(diffuseMap, vary_texcoord0.xy) * vertex_color;
 	
 	if (col.a < minimum_alpha)
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl
index e5f2af2c53..a07c892d8e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl
@@ -28,6 +28,7 @@
 out vec4 frag_data[4];
 
 in vec3 vary_normal;
+in vec3 vary_position;
 
 uniform float minimum_alpha;
 
@@ -36,8 +37,12 @@ in vec2 vary_texcoord0;
 
 vec2 encode_normal(vec3 n);
 
+void mirrorClip(vec3 pos);
+
 void main() 
 {
+    mirrorClip(vary_position);
+
 	vec4 col = diffuseLookup(vary_texcoord0.xy) * vertex_color;
 	
 	if (col.a < minimum_alpha)
diff --git a/indra/newview/app_settings/shaders/class1/deferred/treeF.glsl b/indra/newview/app_settings/shaders/class1/deferred/treeF.glsl
index e2d87e68fa..f108faf283 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/treeF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/treeF.glsl
@@ -32,13 +32,16 @@ uniform sampler2D diffuseMap;
 in vec4 vertex_color;
 in vec3 vary_normal;
 in vec2 vary_texcoord0;
+in vec3 vary_position;
 
 uniform float minimum_alpha;
 
 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/treeV.glsl b/indra/newview/app_settings/shaders/class1/deferred/treeV.glsl
index ce8a10712c..c84fccd4c6 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/treeV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/treeV.glsl
@@ -24,6 +24,7 @@
  */
 
 uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
 uniform mat4 modelview_projection_matrix;
 uniform mat3 normal_matrix;
 
@@ -34,11 +35,14 @@ in vec2 texcoord0;
 out vec3 vary_normal;
 out vec4 vertex_color;
 out vec2 vary_texcoord0;
+out vec3 vary_position;
 
 void main()
 {
 	//transform vertex
 	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0); 
+    vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
+
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 	
 	vary_normal = normalize(normal_matrix * normal);
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index e9562d64e4..1fecf90c1f 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -299,6 +299,9 @@ LLViewerShaderMgr::LLViewerShaderMgr() :
     mShaderList.push_back(&gDeferredPBRAlphaProgram);
     mShaderList.push_back(&gDeferredAvatarProgram);
     mShaderList.push_back(&gDeferredTerrainProgram);
+    mShaderList.push_back(&gDeferredDiffuseAlphaMaskProgram);
+    mShaderList.push_back(&gDeferredNonIndexedDiffuseAlphaMaskProgram);
+    mShaderList.push_back(&gDeferredTreeProgram);
 }
 
 LLViewerShaderMgr::~LLViewerShaderMgr()
-- 
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