GPU Display: compute reasonable zFar to make sure other TPC side is always visible

davidrohr · davidrohr · commit af57c997cd0c · 2021-03-14T09:39:35.000+01:00
diff --git a/GPU/GPUTracking/display/GPUDisplay.cxx b/GPU/GPUTracking/display/GPUDisplay.cxx
@@ -1830,7 +1830,8 @@ int GPUDisplay::DrawGLScene_internal(bool mixAnimation, float mAnimateTime)
 #endif
 
   {
-    const hmm_mat4 proj = HMM_Perspective(mFOV, (GLfloat)mScreenwidth / (GLfloat)mScreenheight, 0.1f, 1000.0f);
+    const float zFar = ((param().par.ContinuousTracking ? (mMaxClusterZ / GL_SCALE_FACTOR) : 8.f) + 50.f) * 2.f;
+    const hmm_mat4 proj = HMM_Perspective(mFOV, (GLfloat)mScreenwidth / (GLfloat)mScreenheight, 0.1f, zFar);
 #ifndef GPUCA_DISPLAY_OPENGL_CORE
     CHKERR(glMatrixMode(GL_PROJECTION));
     CHKERR(glLoadMatrixf(&proj.Elements[0][0]));

Original file line number	Diff line number	Diff line change
`@@ -1830,7 +1830,8 @@ int GPUDisplay::DrawGLScene_internal(bool mixAnimation, float mAnimateTime)`
`1830`	`1830`	`#endif`
`1831`	`1831`
`1832`	`1832`	`{`
`1833`		`- const hmm_mat4 proj = HMM_Perspective(mFOV, (GLfloat)mScreenwidth / (GLfloat)mScreenheight, 0.1f, 1000.0f);`
	`1833`	`+ const float zFar = ((param().par.ContinuousTracking ? (mMaxClusterZ / GL_SCALE_FACTOR) : 8.f) + 50.f) * 2.f;`
	`1834`	`+ const hmm_mat4 proj = HMM_Perspective(mFOV, (GLfloat)mScreenwidth / (GLfloat)mScreenheight, 0.1f, zFar);`
`1834`	`1835`	`#ifndef GPUCA_DISPLAY_OPENGL_CORE`
`1835`	`1836`	`CHKERR(glMatrixMode(GL_PROJECTION));`
`1836`	`1837`	`CHKERR(glLoadMatrixf(&proj.Elements[0][0]));`