only round vertices if AA is on

[skip ci]

4 files changed, 29 insertions, 10 deletions

diff --git a/assets/opensb/rendering/effects/interface.config b/assets/opensb/rendering/effects/interface.config
index 4616e72..f153068 100644
--- a/assets/opensb/rendering/effects/interface.config
+++ b/assets/opensb/rendering/effects/interface.config
@@ -1,7 +1,13 @@
 {
   "blitFrameBuffer" : "main",
 
-  "effectParameters" : {},
+  "effectParameters" : {
+    "vertexRounding" : {
+      "type" : "bool",
+      "default" : false,
+      "uniform" : "vertexRounding"
+    }
+  },
   "effectTextures" : {},
 
   "effectShaders" : {
diff --git a/assets/opensb/rendering/effects/interface.vert b/assets/opensb/rendering/effects/interface.vert
index 14a7cea..dfd94d4 100644
--- a/assets/opensb/rendering/effects/interface.vert
+++ b/assets/opensb/rendering/effects/interface.vert
@@ -6,6 +6,7 @@ uniform vec2 textureSize2;
 uniform vec2 textureSize3;
 uniform vec2 screenSize;
 uniform mat3 vertexTransform;
+uniform bool vertexRounding;
 
 in vec2 vertexPosition;
 in vec4 vertexColor;
@@ -19,10 +20,14 @@ out vec4 fragmentColor;
 void main() {
   vec2 screenPosition = (vertexTransform * vec3(vertexPosition, 1.0)).xy;
   gl_Position = vec4(screenPosition / screenSize * 2.0 - 1.0, 0.0, 1.0);
-  if (((vertexData >> 3) & 0x1) == 1)
-    screenPosition.x = round(screenPosition.x);
-  if (((vertexData >> 4) & 0x1) == 1)
-    screenPosition.y = round(screenPosition.y);
+  
+  if (vertexRounding) {
+    if (((vertexData >> 3) & 0x1) == 1)
+      screenPosition.x = round(screenPosition.x);
+    if (((vertexData >> 4) & 0x1) == 1)
+      screenPosition.y = round(screenPosition.y);
+  }
+  
   int vertexTextureIndex = vertexData & 0x3;
   if (vertexTextureIndex == 3)
     fragmentTextureCoordinate = vertexTextureCoordinate / textureSize3;
diff --git a/assets/opensb/rendering/effects/world.config b/assets/opensb/rendering/effects/world.config
index d8ec1a9..3a55cfe 100644
--- a/assets/opensb/rendering/effects/world.config
+++ b/assets/opensb/rendering/effects/world.config
@@ -21,6 +21,11 @@
       "type" : "float",
       "default" : 1.0,
       "uniform" : "lightMapMultiplier"
+    },
+    "vertexRounding" : {
+      "type" : "bool",
+      "default" : false,
+      "uniform" : "vertexRounding"
     }
   },
 
diff --git a/assets/opensb/rendering/effects/world.vert b/assets/opensb/rendering/effects/world.vert
index ce8a9fc..f41c0a8 100644
--- a/assets/opensb/rendering/effects/world.vert
+++ b/assets/opensb/rendering/effects/world.vert
@@ -6,6 +6,7 @@ uniform vec2 textureSize2;
 uniform vec2 textureSize3;
 uniform vec2 screenSize;
 uniform mat3 vertexTransform;
+uniform bool vertexRounding;
 uniform vec2 lightMapSize;
 uniform vec2 lightMapScale;
 uniform vec2 lightMapOffset;
@@ -24,11 +25,13 @@ out vec2 fragmentLightMapCoordinate;
 void main() {
   vec2 screenPosition = (vertexTransform * vec3(vertexPosition, 1.0)).xy;
 
-  if (((vertexData >> 3) & 0x1) == 1)
-    screenPosition.x = round(screenPosition.x);
-  if (((vertexData >> 4) & 0x1) == 1)
-    screenPosition.y = round(screenPosition.y);
-
+  if (vertexRounding) {
+    if (((vertexData >> 3) & 0x1) == 1)
+      screenPosition.x = round(screenPosition.x);
+    if (((vertexData >> 4) & 0x1) == 1)
+      screenPosition.y = round(screenPosition.y);
+  }
+  
   fragmentLightMapMultiplier = float((vertexData >> 2) & 0x1);
   int vertexTextureIndex = vertexData & 0x3;
   fragmentLightMapCoordinate = (screenPosition / lightMapScale) - lightMapOffset * lightMapSize / screenSize;