From 3d00a0321ce7a844c5bc0b4cb3ee19a225821621 Mon Sep 17 00:00:00 2001
From: ouv <ouv@opencascade.com>
Date: Wed, 14 Sep 2005 06:12:58 +0000
Subject: [PATCH] *** empty log message ***

---
 resources/Vertex_Program_ARB.txt | 50 +++++---------------------------
 1 file changed, 8 insertions(+), 42 deletions(-)

diff --git a/resources/Vertex_Program_ARB.txt b/resources/Vertex_Program_ARB.txt
index aa80032d..2d8462e2 100755
--- a/resources/Vertex_Program_ARB.txt
+++ b/resources/Vertex_Program_ARB.txt
@@ -1,43 +1,8 @@
 // simple vertex shader
-/*
-struct VS_INPUT {
-  float3 Pos   : POSITION;
-  float  I     : TEXCOORD0;
-};
 
-struct VS_OUTPUT {
-//  float4 Pos   : POSITION;
-//  float4 Col   : COLOR0;
-  float  Size  : PSIZE;
-};
-
-float ComputePointSize(float3 inVertex, float inSize) {
-  float4 viewPos = mul(float4(inVertex, 1), WorldView);
-  float dist = (viewPos.x * viewPos.x + viewPos.y * viewPos.y + viewPos.z * viewPos.z);
-  float size = viewportSize.y * inSize * globalPointSize * rsqrt((1 + dist));
-
-  return max( 16.0f, size );
-}
-
-VS_OUTPUT VertexShader_PointSpritePalette(VS_INPUT vIn) {
-  VS_OUTPUT Out;
-
-//  Out.Pos = mul(float4(vIn.Pos, 1), WorldViewProjection);
-
-  if( vIn.I < limitMin || vIn.I > limitMax ) {
-    Out.Size = 0;
-  } else {
-    float stepValue = vIn.I;
-
-    float size1 = 1.0f;
-    float size2 = 4.0f;
-    float pSize = size1 + stepValue * (size2 - size1);
-    Out.Size = ComputePointSize(vIn.Pos, pSize) * 0.5;
-  }
-
-  return Out;
-}
-*/
+attribute float minSize;
+attribute float maxSize;
+attribute float clamp;
 
 float3 ComputePointSize( float3 inColor )
 {
@@ -85,8 +50,8 @@ float3 ComputePointSize( float3 inColor )
       h = 180 + (120*(r-g+delta)+delta)/(2*delta);
   }
 
-  float minSize = 15.0f;
-  float maxSize = 50.0f;
+  minSize = 15.0;
+  maxSize = 40.0;
 
   float size = minSize + ( maxSize - minSize ) * ( 1 - h / 256.0f );
 
@@ -97,10 +62,11 @@ void main()
 {
   gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
 
-  //gl_FrontColor = gl_Color;
+  gl_FrontColor = gl_Color;
 
   float size = ComputePointSize( gl_Color );
 
-  gl_PointSize = size * gl_ProjectionMatrix[0].x;
+  clamp = 100.0;
+  gl_PointSize = min( size * gl_ProjectionMatrix[0].x, clamp );
 
 }
-- 
2.39.2