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- it's really not necessary to waste two clip planes for reflective surfaces because only one can be active at any time.
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parent
3c16a23865
commit
47db3252f4
2 changed files with 12 additions and 7 deletions
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@ -291,7 +291,6 @@ bool GLPortal::Start(bool usestencil, bool doquery)
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planestack.Push(gl_RenderState.GetClipHeightTop());
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planestack.Push(gl_RenderState.GetClipHeightBottom());
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glDisable(GL_CLIP_DISTANCE0);
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glDisable(GL_CLIP_DISTANCE1);
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gl_RenderState.SetClipHeightBottom(-65536.f);
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gl_RenderState.SetClipHeightTop(65536.f);
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@ -360,7 +359,7 @@ void GLPortal::End(bool usestencil)
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if (f > -65535.f) glEnable(GL_CLIP_DISTANCE0);
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planestack.Pop(f);
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gl_RenderState.SetClipHeightTop(f);
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if (f < 65535.f) glEnable(GL_CLIP_DISTANCE1);
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if (f < 65535.f) glEnable(GL_CLIP_DISTANCE0);
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if (usestencil)
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{
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@ -808,17 +807,17 @@ void GLPlaneMirrorPortal::DrawContents()
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if (PlaneMirrorMode < 0)
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{
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gl_RenderState.SetClipHeightTop(f); // ceiling mirror: clip everything with a z lower than the portal's ceiling
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glEnable(GL_CLIP_DISTANCE1);
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gl_RenderState.SetClipHeightBottom(-65536.f);
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}
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else
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{
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gl_RenderState.SetClipHeightBottom(f); // floor mirror: clip everything with a z higher than the portal's floor
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glEnable(GL_CLIP_DISTANCE0);
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gl_RenderState.SetClipHeightTop(65536.f);
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}
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glEnable(GL_CLIP_DISTANCE0);
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GLRenderer->DrawScene();
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glDisable(GL_CLIP_DISTANCE0);
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glDisable(GL_CLIP_DISTANCE1);
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gl_RenderState.SetClipHeightBottom(-65536.f);
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gl_RenderState.SetClipHeightTop(65536.f);
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PlaneMirrorFlag--;
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@ -45,8 +45,14 @@ void main()
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gl_Position = ProjectionMatrix * eyeCoordPos;
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// clip planes used for reflective flats
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gl_ClipDistance[0] = worldcoord.y - uClipHeightBottom;
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gl_ClipDistance[1] = uClipHeightTop - worldcoord.y;
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if (uClipHeightBottom > -65536.0)
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{
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gl_ClipDistance[0] = worldcoord.y - uClipHeightBottom;
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}
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else if (uClipHeightTop < 65536.0)
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{
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gl_ClipDistance[0] = uClipHeightTop - worldcoord.y;
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}
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gl_ClipDistance[2] = worldcoord.y - uClipSplit.x;
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gl_ClipDistance[3] = uClipSplit.y - worldcoord.y;
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