smoothing out results from gui shaders

roundedRectangle and circle drawing now smooth out their results

Engine/source/gfx/gfxDrawUtil.cpp

@@ -627,6 +627,11 @@ void GFXDrawUtil::drawRoundedRect(const F32& cornerRadius,
    Point2F rectCenter((F32)(topLeftCorner.x + (size.x / 2.0)), (F32)(topLeftCorner.y + (size.y / 2.0)));
    mRoundRectangleShaderConsts->setSafe(mRoundRectangleShader->getShaderConstHandle("$rectCenter"), rectCenter);
 
+   const Point2I& resolution = GFX->getActiveRenderTarget()->getSize();
+   Point2F TargetSize(1.0 / (F32)resolution.x, 1.0 / (F32)resolution.y);
+
+   mRoundRectangleShaderConsts->setSafe(mRoundRectangleShader->getShaderConstHandle("$oneOverViewport"), TargetSize);
+
    mDevice->drawPrimitive(GFXTriangleStrip, 0, 2);
 }
 

Engine/source/gfx/gfxDrawUtil.h

@@ -31,12 +31,12 @@
 #include "math/mPolyhedron.h"
 #endif
 
-
-
 class FontRenderBatcher;
 class Frustum;
 
 
+
+
 /// Helper class containing utility functions for useful drawing routines
 /// (line, box, rect, billboard, text).
 class GFXDrawUtil

Engine/source/gui/shaderEditor/guiShaderEditor.cpp

@@ -271,19 +271,26 @@ void GuiShaderEditor::onRender(Point2I offset, const RectI& updateRect)
          {
             // for temp connetion, nodeA is always the first node selected.
             Point2I start(Point2I::Zero);
+            ColorI color(ColorI::WHITE);
             if (mTempConnection->inSocket != NULL)
+            {
                start = mTempConnection->nodeA->localToGlobalCoord(mTempConnection->inSocket->pos) + offset;
-            else if(mTempConnection->outSocket != NULL)
+               color = mTempConnection->inSocket->col;
+            }
+            else if (mTempConnection->outSocket != NULL)
+            {
                start = mTempConnection->nodeA->localToGlobalCoord(mTempConnection->outSocket->pos) + offset;
+               color = mTempConnection->outSocket->col;
+            }
 
             RectI sockActive(start, Point2I(mNodeSize, mNodeSize));
             start += Point2I(mNodeSize / 2, mNodeSize / 2);
 
-            drawer->drawThickLine(start, mLastMousePos + offset, ColorI(255, 255, 255, 255), (F32)mNodeSize / 3);
+            drawer->drawThickLine(start, mLastMousePos + offset, color, (F32)mNodeSize / 3);
 
             // draw socket overlay over the top of the line.
             sockActive.inset(1, 1);
-            drawer->drawCircleFill(sockActive, ColorI(255, 255, 255), mNodeSize / 2);
+            drawer->drawCircleFill(sockActive, color, mNodeSize / 2);
          }
       }
       // Draw selection rectangle last so it is rendered on top.

Engine/source/gui/shaderEditor/guiShaderNode.h

@@ -73,22 +73,22 @@ struct NodeSocket
       switch (inDim)
       {
       case DataDimensions::Dynamic:
-         col = ColorI(200, 200, 200, 200);
+         col = ColorI(200, 200, 200, 128);
          break;
       case DataDimensions::Scalar:
-         col = ColorI(210, 105, 30, 200);
+         col = ColorI(210, 105, 30, 128);
          break;
       case DataDimensions::Vector2:
-         col = ColorI(152, 251,152, 200);
+         col = ColorI(152, 251,152, 128);
          break;
       case DataDimensions::Vector3:
-         col = ColorI(127, 255, 212, 200);
+         col = ColorI(127, 255, 212, 128);
          break;
       case DataDimensions::Vector4:
-         col = ColorI(100, 149, 237, 200);
+         col = ColorI(100, 149, 237, 128);
          break;
       case DataDimensions::Mat4x4:
-         col = ColorI(153, 50, 204, 200);
+         col = ColorI(153, 50, 204, 128);
          break;
       default:
          break;

Templates/BaseGame/game/core/rendering/shaders/fixedFunction/circleP.hlsl

@@ -34,33 +34,33 @@ uniform float2 rectCenter;
 uniform float borderSize;
 uniform float4 borderCol;
 
-float circle(float2 p, float radius)
+float circle(float2 p, float2 center, float r)
 {
-    float dist = length(p - float2(0.5,0.5));
-    return 1.0 - smoothstep(radius - (radius*0.01), 
-                            radius + (radius*0.01),
-                            dot(dist,dist) * 4.0);
+    return length(p - center);
 }
  
 float4 main(Conn IN) : TORQUE_TARGET0
 {   
-    float distance = length(IN.HPOS.xy - rectCenter);
-    if(distance > radius)
-    {
-        discard;
-    }
+    float distance = circle(IN.HPOS.xy, rectCenter, radius);
+    
+    float4 fromColor = borderCol;
+    float4 toColor = float4(0.0, 0.0, 0.0, 0.0);
 
     if(distance < radius)
     {
-        if(distance < (radius - borderSize))
-        {
-            return IN.color;
-        }
-        else
+        distance = abs(distance) - radius;
+        
+        if(distance < (radius - (borderSize * 0.5)))
         {
-            return borderCol;
+            toColor = IN.color;
+            distance = abs(distance) - (borderSize * 0.5);
         }
-    }
 
-    return IN.color;
+        float blend = smoothstep(0.0, 1.0, distance);
+        return lerp(fromColor, toColor, blend);
+    }
+    
+    distance = abs(distance) - radius; 
+    float blend = smoothstep(0.0, 1.0, distance);
+    return lerp(fromColor, toColor, blend);
 }

Templates/BaseGame/game/core/rendering/shaders/fixedFunction/roundedRectangleP.hlsl

@@ -30,34 +30,33 @@ struct Conn
 
 uniform float2 sizeUni;
 uniform float2 rectCenter;
+uniform float2 oneOverViewport;
 uniform float radius;
 uniform float borderSize;
 uniform float4 borderCol;
 
 float RoundedRectSDF(float2 p, float2 size, float radius)
 {
-    float2 halfSize = size / 2.0;
-
     // Calculate distance to each side of the rectangle
-    float2 dist = abs(p) - halfSize + radius;
+    float2 dist = abs(p) - size + float2(radius, radius);
 
     // Compute the distance to the rounded corners
-    float cornerDist = length(max(abs(p) - (halfSize - float2(radius, radius)), 0.0));
+    float cornerDist = length(max(dist, 0.0));
 
     // Return the minimum distance (negative inside, positive outside)
-    return min(max(dist.x, dist.y), 0.0) + cornerDist - radius;
+    return min(max(dist.x, dist.y), 0.0) + cornerDist - radius; 
 }
  
 float4 main(Conn IN) : TORQUE_TARGET0
 {  
     float2 p = IN.HPOS.xy;
-    float2 halfSize = sizeUni * 0.5;
-    float halfBorder = borderSize * 0.5; 
     
-    p -= rectCenter;
+    float halfBorder = borderSize * 0.5; 
+    float2 halfSize = sizeUni * 0.5;
+    p -= rectCenter; 
 
     // Calculate signed distance field for rounded rectangle 
-    float4 fromColor = IN.color;
+    float4 fromColor = borderCol;
     // alpha
     float4 toColor = float4(0.0, 0.0, 0.0, 0.0);
 
@@ -73,9 +72,7 @@ float4 main(Conn IN) : TORQUE_TARGET0
 
     if(cornerRadius > 0.0 || halfBorder > 0.0)
     {
-        float sdf = RoundedRectSDF(p, sizeUni, cornerRadius - halfBorder);
-
-        clip(0.01 - sdf);
+        float sdf = RoundedRectSDF(p, halfSize, cornerRadius - halfBorder);
 
         if(halfBorder > 0.0)
         {
@@ -87,20 +84,16 @@ float4 main(Conn IN) : TORQUE_TARGET0
                 //     (p.x >= halfSize.x - radius + halfBorder && p.x <= halfSize.x + radius - halfBorder) ) {    // right border
                     
                 // }
-
-                toColor = borderCol;  
+                toColor = IN.color;  
             }
-            
             sdf = abs(sdf) - halfBorder;
-
-            // Apply smoothing to create rounded effect  
-            float blending = smoothstep(1.0, -1.0, sdf); 
-
-            return lerp(fromColor, toColor, blending);
+        } 
+        else{
+            fromColor = IN.color; 
         }
-        
-        float alpha = smoothstep(1.0, 0.0, sdf); 
-        return float4(IN.color.rgb, IN.color.a * alpha);
+
+        float alpha = smoothstep(-1.0, 1.0, sdf); 
+        return lerp(fromColor, toColor, alpha);
     }
     else
     {