Added support for Stencil.

git-svn-id: https://svn.java.net/svn/j3d-core~svn/trunk@482 ba19aa83-45c5-6ac9-afd3-db810772062c

1 files changed, 46 insertions, 13 deletions

diff --git a/src/native/d3d/Canvas3D.cpp b/src/native/d3d/Canvas3D.cpp
index 6c49384..661c20d 100644
--- a/src/native/d3d/Canvas3D.cpp
+++ b/src/native/d3d/Canvas3D.cpp
@@ -29,7 +29,7 @@ void JNICALL Java_javax_media_j3d_Canvas3D_widSync(
     jobject obj,
     jint fd,
     jint numWindows)
-{
+{ 
     // This function is only used for Solaris OpenGL
 }
 
@@ -147,8 +147,8 @@ jboolean JNICALL Java_javax_media_j3d_Canvas3D_useCtx(
     jlong display, 
     jint window)
 {
-    // D3D doesn't have notation of current context
-    return JNI_TRUE;
+	return JNI_TRUE;   
+	// D3D doesn't have notation of current context
 }
 
 
@@ -338,13 +338,24 @@ void JNICALL Java_javax_media_j3d_Canvas3D_clear(
     GetDevice();
 
  /* Java 3D always clears the Z-buffer */
+ /* @TODO check same operation for stencil */
 
     if (!d3dCtx->zWriteEnable) {
 	device->SetRenderState(D3DRS_ZWRITEENABLE, TRUE);
     } 
 
-    device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 
-		  D3DCOLOR_COLORVALUE(r, g, b, 1.0f), 1.0, 0);
+	/* clear stencil, if in used */
+	if (d3dCtx->stencilWriteEnable )
+	{// clear stencil and ZBuffer
+	  device->Clear(0, NULL, D3DCLEAR_STENCIL | D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 
+		             D3DCOLOR_COLORVALUE(r, g, b, 1.0f), 1.0, 0);
+	}
+	else
+	{	// clear ZBuffer only
+	 device->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 
+		          D3DCOLOR_COLORVALUE(r, g, b, 1.0f), 1.0, 0);
+	}
+
 
     if (pa2d) {
 	jclass pa2d_class = env->GetObjectClass(pa2d);
@@ -401,6 +412,8 @@ void JNICALL Java_javax_media_j3d_Canvas3D_clear(
 	int scaleWidth, scaleHeight;
 	float sw, sh;
 
+	DWORD stencilcmpfunc;
+
 	// sz can be any number since we already disable z buffer
 	// However rhw can't be 0, otherwise texture will not shown
 	screenCoord.sz = 0.999f;
@@ -410,6 +423,15 @@ void JNICALL Java_javax_media_j3d_Canvas3D_clear(
 	device->GetRenderState(D3DRS_ZFUNC, &zcmpfunc);
 	device->SetRenderState(D3DRS_ZWRITEENABLE, FALSE);
 	device->SetRenderState(D3DRS_ZFUNC, D3DCMP_ALWAYS);
+    
+	// must disable stencil ? I guess yes
+	if (d3dCtx->stencilEnable) 
+	{
+	  device->GetRenderState(D3DRS_STENCILFUNC, &stencilcmpfunc);
+	  device->SetRenderState(D3DRS_STENCILENABLE, FALSE);
+	  device->SetRenderState(D3DRS_STENCILFUNC, D3DCMP_ALWAYS);
+	}
+
 
 	switch (imageScaleMode){
 	case javax_media_j3d_Background_SCALE_NONE:
@@ -477,13 +499,25 @@ void JNICALL Java_javax_media_j3d_Canvas3D_clear(
 			scaleWidth, scaleHeight, texModeRepeat);
 
 	device->SetRenderState(D3DRS_ZFUNC, zcmpfunc);
-	device->SetRenderState(D3DRS_ZWRITEENABLE, 
-			       d3dCtx->zWriteEnable);
-	unlockBackground();
-    } else {
-	if (!d3dCtx->zWriteEnable) {
-	    device->SetRenderState(D3DRS_ZWRITEENABLE, FALSE);
+	device->SetRenderState(D3DRS_ZWRITEENABLE, d3dCtx->zWriteEnable);
+	
+	// reenable stencil ? yes
+	if (d3dCtx->stencilEnable) 
+	{
+     device->SetRenderState(D3DRS_STENCILFUNC, stencilcmpfunc);
+	 device->SetRenderState(D3DRS_STENCILENABLE, d3dCtx->stencilWriteEnable);
 	}
+	unlockBackground();
+    } 
+   else 
+     {
+	  if (!d3dCtx->zWriteEnable) {
+	      device->SetRenderState(D3DRS_ZWRITEENABLE, FALSE);
+	    }	
+	  // disable stencil 
+      if (d3dCtx->stencilEnable && !d3dCtx->stencilWriteEnable) {
+	      device->SetRenderState(D3DRS_STENCILENABLE, FALSE);		  
+	  }
     }
 
 
@@ -1033,5 +1067,4 @@ jboolean JNICALL Java_javax_media_j3d_Canvas3D_validGraphicsMode(
     
     EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &devMode);
     return (devMode.dmBitsPerPel > 8);
-}
-
+}
\ No newline at end of file