Add r_forceRendererTime

When set to >= 0, the value of this cvar (in milliseconds) will be used for time-based shader effects.

Author: VReaperV

src/engine/renderer/tr_init.cpp

@@ -271,6 +271,8 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 		"(-1 to profile all stages/materials, rendered in their usual order); "
 		"for materials, material IDs start from opaque materials, depth pre-pass materials are ignored", Cvar::NONE, -1 );
 
+	Cvar::Cvar<int> r_forceRendererTime( "r_forceRendererTime", "Set a specific time (in ms, since the start of the map) for time-based shader effects; -1 to disable", Cvar::CHEAT, -1 );
+
 	cvar_t      *r_vboFaces;
 	cvar_t      *r_vboCurves;
 	cvar_t      *r_vboTriangles;

src/engine/renderer/tr_local.h

@@ -3047,6 +3047,8 @@ enum class shaderProfilerRenderSubGroupsMode {
 	extern Cvar::Cvar<bool> r_materialDebug;
 	extern cvar_t *r_showParallelShadowSplits;
 
+	extern Cvar::Cvar<int> r_forceRendererTime;
+
 	extern Cvar::Cvar<bool> r_profilerRenderSubGroups;
 	extern Cvar::Range<Cvar::Cvar<int>> r_profilerRenderSubGroupsMode;
 	extern Cvar::Cvar<int> r_profilerRenderSubGroupsStage;

src/engine/renderer/tr_scene.cpp

@@ -564,7 +564,11 @@ void RE_RenderScene( const refdef_t *fd )
 	}
 
 	// derived info
-	tr.refdef.floatTime = float(double(tr.refdef.time) * 0.001);
+	if ( r_forceRendererTime.Get() >= 0 ) {
+		tr.refdef.floatTime = float( double( r_forceRendererTime.Get() ) * 0.001 );
+	} else {
+		tr.refdef.floatTime = float( double( tr.refdef.time ) * 0.001 );
+	}
 
 	tr.refdef.numDrawSurfs = r_firstSceneDrawSurf;
 	tr.refdef.drawSurfs = backEndData[ tr.smpFrame ]->drawSurfs;