src/java.desktop/windows/native/libawt/java2d/d3d/D3DVertexCacher.cpp

@@ -209,10 +209,20 @@
     res = lpD3DDevice->SetStreamSource(0, lpD3DVertexBuffer, 0,
                                        sizeof(J2DLVERTEX));
     RETURN_STATUS_IF_FAILED(res);
 
     lpD3DDevice->SetFVF(D3DFVF_J2DLVERTEX);
+
+    fudge2 = HV_FF2;
+    if (fudge2 > 0) {
+        D3DADAPTER_IDENTIFIER9 aid;
+        if (SUCCEEDED(pCtx->Get3DObject()->GetAdapterIdentifier(pCtx->
+                     getAdapterOrdinal(), 0, &aid)) && aid.VendorId == 0x8086) {
+            // Intel
+            fudge2 -= 0.09f;
+        }
+    }
     return res;
 }
 
 void
 D3DVertexCacher::ReleaseDefPoolResources()

@@ -231,14 +241,14 @@
             fy1  = (float)y1+HV_FF1;
             fy2  = fy1;
 
             if (x1 > x2) {
                 fx1 = (float)x2+HV_FF3;
-                fx2 = (float)x1+HV_FF2;
+                fx2 = (float)x1+fudge2;
             } else if (x1 < x2) {
                 fx1 = (float)x1+HV_FF3;
-                fx2 = (float)x2+HV_FF2;
+                fx2 = (float)x2+fudge2;
             } else {
                 // single point, offset a little so that a single
                 // pixel is rendered
                 fx1 = (float)x1-SP_FF4;
                 fy1 = (float)y1-SP_FF4;

@@ -249,14 +259,14 @@
             // vertical
             fx1  = (float)x1+HV_FF1;
             fx2  = fx1;
             if (y1 > y2) {
                 fy1 = (float)y2+HV_FF3;
-                fy2 = (float)y1+HV_FF2;
+                fy2 = (float)y1+fudge2;
             } else {
                 fy1 = (float)y1+HV_FF3;
-                fy2 = (float)y2+HV_FF2;
+                fy2 = (float)y2+fudge2;
             }
         } else {
             // diagonal
             if (x1 > x2 && y1 > y2) {
                 // ^

@@ -385,11 +395,11 @@
         UINT vertsInBatch = min(2*(MAX_BATCH_SIZE/2), reqVerts);
         if (SUCCEEDED(res = EnsureCapacity(D3DPT_LINELIST, vertsInBatch))) {
             reqVerts -= vertsInBatch;
             do {
                 x1 = ((float)*(scanlines++)) +HV_FF3;
-                x2 = ((float)*(scanlines++)) +HV_FF2;
+                x2 = ((float)*(scanlines++)) +fudge2;
                 y  = ((float)*(scanlines++)) +HV_FF1;
                 ADD_LINE_XYC(x1, y, x2, y, color);
                 vertsInBatch -= 2;
             } while (vertsInBatch > 0);
         }

@@ -441,17 +451,17 @@
         float fy1 = (float)y1;
         float fx2 = (float)x2;
         float fy2 = (float)y2;
 
         // horiz: top left - top right
-        ADD_LINE_XYC(fx1+HV_FF3, fy1+HV_FF1, fx2-1.0f+HV_FF2, fy1+HV_FF1,color);
+        ADD_LINE_XYC(fx1+HV_FF3, fy1+HV_FF1, fx2-1.0f+fudge2, fy1+HV_FF1,color);
         // horiz: bottom left - bottom right
-        ADD_LINE_XYC(fx1+1.0f+HV_FF3, fy2+HV_FF1, fx2+HV_FF2, fy2+HV_FF1,color);
+        ADD_LINE_XYC(fx1+1.0f+HV_FF3, fy2+HV_FF1, fx2+fudge2, fy2+HV_FF1,color);
         // vert : top right - bottom right
-        ADD_LINE_XYC(fx2+HV_FF1, fy1+HV_FF3, fx2+HV_FF1, fy2-1.0f+HV_FF2,color);
+        ADD_LINE_XYC(fx2+HV_FF1, fy1+HV_FF3, fx2+HV_FF1, fy2-1.0f+fudge2,color);
         // vert : top left - bottom left
-        ADD_LINE_XYC(fx1+HV_FF1, fy1+1.0f+HV_FF3, fx1+HV_FF1, fy2+HV_FF2,color);
+        ADD_LINE_XYC(fx1+HV_FF1, fy1+1.0f+HV_FF3, fx1+HV_FF1, fy2+fudge2,color);
     }
     return res;
 }
 
 HRESULT D3DVertexCacher::FillRect(int x1, int y1, int x2, int y2)