diff --git a/src/g_shared/a_artifacts.cpp b/src/g_shared/a_artifacts.cpp
index a09c03c3d..d66df3552 100644
--- a/src/g_shared/a_artifacts.cpp
+++ b/src/g_shared/a_artifacts.cpp
@@ -499,8 +499,7 @@ int APowerInvulnerable::AlterWeaponSprite (visstyle_t *vis)
 	{
 		if (Mode == NAME_Ghost && !(Owner->flags & MF_SHADOW))
 		{
-			double wp_alpha = MIN<double>(0.25 + Owner->Alpha*0.75, 1.);
-			vis->alpha = FLOAT2FIXED(wp_alpha);
+			vis->Alpha = MIN<float>(0.25f + (float)Owner->Alpha*0.75f, 1.f);
 		}
 	}
 	return changed;
@@ -616,7 +615,7 @@ void APowerInvisibility::DoEffect ()
 	Super::DoEffect();
 	// Due to potential interference with other PowerInvisibility items
 	// the effect has to be refreshed each tic.
-	double ts = FIXED2DBL((Strength/100) * (special1 + 1)); 
+	double ts = (Strength / 100) * (special1 + 1);
 	
 	if (ts > 1.) ts = 1.;
 	Owner->Alpha = clamp((1. - ts), 0., 1.);
@@ -698,14 +697,14 @@ int APowerInvisibility::AlterWeaponSprite (visstyle_t *vis)
 	if (changed == 0 && EffectTics < 4*32 && !(EffectTics & 8))
 	{
 		vis->RenderStyle = STYLE_Normal;
-		vis->alpha = OPAQUE;
+		vis->Alpha = 1.f;
 		return 1;
 	}
 	else if (changed == 1)
 	{
 		// something else set the weapon sprite back to opaque but this item is still active.
-		fixed_t ts = (Strength/100) * (special1 + 1); if (ts > FRACUNIT) ts = FRACUNIT;
-		vis->alpha = clamp<fixed_t>((OPAQUE - ts), 0, OPAQUE);
+		float ts = float((Strength / 100) * (special1 + 1));
+		vis->Alpha = clamp<>((1.f - ts), 0.f, 1.f);
 		switch (Mode)
 		{
 		case (NAME_Fuzzy):
@@ -735,9 +734,9 @@ int APowerInvisibility::AlterWeaponSprite (visstyle_t *vis)
 		}
 	}
 	// Handling of Strife-like cumulative invisibility powerups, the weapon itself shouldn't become invisible
-	if ((vis->alpha < TRANSLUC25 && special1 > 0) || (vis->alpha == 0))
+	if ((vis->Alpha < 0.25f && special1 > 0) || (vis->Alpha == 0))
 	{
-		vis->alpha = clamp<fixed_t>((OPAQUE - (Strength/100)), 0, OPAQUE);
+		vis->Alpha = clamp((1.f - float(Strength/100)), 0.f, 1.f);
 		vis->colormap = SpecialColormaps[INVERSECOLORMAP].Colormap;
 	}
 	return -1;	// This item is valid so another one shouldn't reset the translucency
@@ -754,7 +753,7 @@ int APowerInvisibility::AlterWeaponSprite (visstyle_t *vis)
 
 bool APowerInvisibility::HandlePickup (AInventory *item)
 {
-	if (Mode == NAME_Cumulative && ((Strength * special1) < FRACUNIT) && item->GetClass() == GetClass())
+	if (Mode == NAME_Cumulative && ((Strength * special1) < 1.) && item->GetClass() == GetClass())
 	{
 		APowerup *power = static_cast<APowerup *>(item);
 		if (power->EffectTics == 0)
@@ -1789,7 +1788,7 @@ void APowerRegeneration::DoEffect()
 	Super::DoEffect();
 	if (Owner != NULL && Owner->health > 0 && (level.time & 31) == 0)
 	{
-		if (P_GiveBody(Owner, Strength/FRACUNIT))
+		if (P_GiveBody(Owner, int(Strength)))
 		{
 			S_Sound(Owner, CHAN_ITEM, "*regenerate", 1, ATTN_NORM );
 		}
diff --git a/src/g_shared/a_artifacts.h b/src/g_shared/a_artifacts.h
index 23ff347d3..747729423 100644
--- a/src/g_shared/a_artifacts.h
+++ b/src/g_shared/a_artifacts.h
@@ -25,7 +25,7 @@ public:
 	int EffectTics;
 	PalEntry BlendColor;
 	FNameNoInit Mode;
-	fixed_t Strength;
+	double Strength;
 
 protected:
 	virtual void InitEffect ();
@@ -58,7 +58,7 @@ public:
 	int EffectTics;			// Non-0 to override the powerup's default tics
 	PalEntry BlendColor;	// Non-0 to override the powerup's default blend
 	FNameNoInit Mode;		// Meaning depends on powerup - used for Invulnerability and Invisibility
-	fixed_t Strength;		// Meaning depends on powerup - currently used only by Invisibility
+	double Strength;		// Meaning depends on powerup - currently used only by Invisibility
 };
 
 class APowerInvulnerable : public APowerup
diff --git a/src/r_defs.h b/src/r_defs.h
index 0eb374c6f..5f63045ca 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -1287,7 +1287,7 @@ typedef BYTE lighttable_t;	// This could be wider for >8 bit display.
 struct visstyle_t
 {
 	lighttable_t	*colormap;
-	fixed_t			alpha;
+	float			Alpha;
 	FRenderStyle	RenderStyle;
 };
 
diff --git a/src/r_draw.h b/src/r_draw.h
index 819306d2e..326ce217b 100644
--- a/src/r_draw.h
+++ b/src/r_draw.h
@@ -269,6 +269,10 @@ enum ESPSResult
 	DoDraw1,	// draw this as if r_columnmethod is 1
 };
 ESPSResult R_SetPatchStyle (FRenderStyle style, fixed_t alpha, int translation, DWORD color);
+inline ESPSResult R_SetPatchStyle(FRenderStyle style, float alpha, int translation, DWORD color)
+{
+	return R_SetPatchStyle(style, FLOAT2FIXED(alpha), translation, color);
+}
 
 // Call this after finished drawing the current thing, in case its
 // style was STYLE_Shade
diff --git a/src/r_things.cpp b/src/r_things.cpp
index f0082e6c4..ac1a7725f 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -408,7 +408,7 @@ void R_DrawVisSprite (vissprite_t *vis)
 
 	dc_colormap = vis->Style.colormap;
 
-	mode = R_SetPatchStyle (vis->Style.RenderStyle, vis->Style.alpha, vis->Translation, vis->FillColor);
+	mode = R_SetPatchStyle (vis->Style.RenderStyle, vis->Style.Alpha, vis->Translation, vis->FillColor);
 
 	if (vis->Style.RenderStyle == LegacyRenderStyles[STYLE_Shaded])
 	{ // For shaded sprites, R_SetPatchStyle sets a dc_colormap to an alpha table, but
@@ -564,7 +564,7 @@ void R_DrawWallSprite(vissprite_t *spr)
 	dc_x = x1;
 	ESPSResult mode;
 
-	mode = R_SetPatchStyle (spr->Style.RenderStyle, spr->Style.alpha, spr->Translation, spr->FillColor);
+	mode = R_SetPatchStyle (spr->Style.RenderStyle, spr->Style.Alpha, spr->Translation, spr->FillColor);
 
 	// R_SetPatchStyle can modify basecolormap.
 	if (rereadcolormap)
@@ -655,7 +655,7 @@ void R_DrawVisVoxel(vissprite_t *spr, int minslabz, int maxslabz, short *cliptop
 
 	// Do setup for blending.
 	dc_colormap = spr->Style.colormap;
-	mode = R_SetPatchStyle(spr->Style.RenderStyle, spr->Style.alpha, spr->Translation, spr->FillColor);
+	mode = R_SetPatchStyle(spr->Style.RenderStyle, spr->Style.Alpha, spr->Translation, spr->FillColor);
 
 	if (mode == DontDraw)
 	{
@@ -1063,7 +1063,7 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
 	vis->FillColor = thing->fillcolor;
 	vis->Translation = thing->Translation;		// [RH] thing translation table
 	vis->FakeFlatStat = fakeside;
-	vis->Style.alpha = FLOAT2FIXED(thing->Alpha);
+	vis->Style.Alpha = float(thing->Alpha);
 	vis->fakefloor = fakefloor;
 	vis->fakeceiling = fakeceiling;
 	vis->ColormapNum = 0;
@@ -1204,7 +1204,7 @@ static void R_ProjectWallSprite(AActor *thing, fixed_t fx, fixed_t fy, fixed_t f
 	vis->FillColor = thing->fillcolor;
 	vis->Translation = thing->Translation;
 	vis->FakeFlatStat = 0;
-	vis->Style.alpha = FLOAT2FIXED(thing->Alpha);
+	vis->Style.Alpha = float(thing->Alpha);
 	vis->fakefloor = NULL;
 	vis->fakeceiling = NULL;
 	vis->ColormapNum = 0;
@@ -1388,7 +1388,7 @@ void R_DrawPSprite (pspdef_t* psp, int pspnum, AActor *owner, fixed_t sx, fixed_
 	noaccel = false;
 	if (pspnum <= ps_flash)
 	{
-		vis->Style.alpha = FLOAT2FIXED(owner->Alpha);
+		vis->Style.Alpha = float(owner->Alpha);
 		vis->Style.RenderStyle = owner->RenderStyle;
 
 		// The software renderer cannot invert the source without inverting the overlay
@@ -1665,7 +1665,7 @@ void R_DrawRemainingPlayerSprites()
 				DTA_ClipTop, viewwindowy,
 				DTA_ClipRight, viewwindowx + viewwidth,
 				DTA_ClipBottom, viewwindowy + viewheight,
-				DTA_Alpha, vis->Style.alpha,
+				DTA_AlphaF, vis->Style.Alpha,
 				DTA_RenderStyle, vis->Style.RenderStyle,
 				DTA_FillColor, vis->FillColor,
 				DTA_SpecialColormap, special,
diff --git a/src/thingdef/thingdef_properties.cpp b/src/thingdef/thingdef_properties.cpp
index 270ac19ce..49b1e24f6 100644
--- a/src/thingdef/thingdef_properties.cpp
+++ b/src/thingdef/thingdef_properties.cpp
@@ -2258,7 +2258,7 @@ DEFINE_CLASS_PROPERTY_PREFIX(powerup, duration, I, Inventory)
 //==========================================================================
 DEFINE_CLASS_PROPERTY_PREFIX(powerup, strength, F, Inventory)
 {
-	fixed_t *pStrength;
+	double *pStrength;
 
 	if (info->IsDescendantOf(RUNTIME_CLASS(APowerup)))
 	{
@@ -2273,7 +2273,7 @@ DEFINE_CLASS_PROPERTY_PREFIX(powerup, strength, F, Inventory)
 		I_Error("\"powerup.strength\" requires an actor of type \"Powerup\"\n");
 		return;
 	}
-	PROP_FIXED_PARM(f, 0);
+	PROP_DOUBLE_PARM(f, 0);
 	*pStrength = f;
 }
 
diff --git a/src/v_draw.cpp b/src/v_draw.cpp
index 6ae8ae4e5..8d3453fa4 100644
--- a/src/v_draw.cpp
+++ b/src/v_draw.cpp
@@ -167,7 +167,7 @@ void STACK_ARGS DCanvas::DrawTextureV(FTexture *img, double x, double y, uint32
 	}
 
 	fixedcolormap = dc_colormap;
-	ESPSResult mode = R_SetPatchStyle (parms.style, parms.alpha, 0, parms.fillcolor);
+	ESPSResult mode = R_SetPatchStyle (parms.style, parms.Alpha, 0, parms.fillcolor);
 
 	BYTE *destorgsave = dc_destorg;
 	dc_destorg = screen->GetBuffer();
@@ -363,7 +363,7 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
 	parms->destheight = parms->texheight;
 	parms->top = img->GetScaledTopOffset();
 	parms->left = img->GetScaledLeftOffset();
-	parms->alpha = FRACUNIT;
+	parms->Alpha = 1.f;
 	parms->fillcolor = -1;
 	parms->remap = NULL;
 	parms->translation = NULL;
@@ -531,11 +531,11 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
 			break;
 
 		case DTA_Alpha:
-			parms->alpha = MIN<fixed_t>(OPAQUE, va_arg (tags, fixed_t));
+			parms->Alpha = FIXED2FLOAT(MIN<fixed_t>(OPAQUE, va_arg (tags, fixed_t)));
 			break;
 
 		case DTA_AlphaF:
-			parms->alpha = FLOAT2FIXED(MIN<double>(1., va_arg(tags, double)));
+			parms->Alpha = (float)(MIN<double>(1., va_arg(tags, double)));
 			break;
 
 		case DTA_AlphaChannel:
@@ -723,7 +723,7 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
 			{
 				parms->style = STYLE_Shaded;
 			}
-			else if (parms->alpha < OPAQUE)
+			else if (parms->Alpha < 1.f)
 			{
 				parms->style = STYLE_TranslucentStencil;
 			}
@@ -732,7 +732,7 @@ bool DCanvas::ParseDrawTextureTags (FTexture *img, double x, double y, DWORD tag
 				parms->style = STYLE_Stencil;
 			}
 		}
-		else if (parms->alpha < OPAQUE)
+		else if (parms->Alpha < 1.f)
 		{
 			parms->style = STYLE_Translucent;
 		}
diff --git a/src/v_video.h b/src/v_video.h
index 5f137937e..269641373 100644
--- a/src/v_video.h
+++ b/src/v_video.h
@@ -240,7 +240,7 @@ public:
 		int rclip;
 		double top;
 		double left;
-		fixed_t alpha;
+		float Alpha;
 		uint32 fillcolor;
 		FRemapTable *remap;
 		const BYTE *translation;
diff --git a/src/win32/fb_d3d9.cpp b/src/win32/fb_d3d9.cpp
index ec8684ad9..17c548c29 100644
--- a/src/win32/fb_d3d9.cpp
+++ b/src/win32/fb_d3d9.cpp
@@ -3535,7 +3535,7 @@ bool D3DFB::SetStyle(D3DTex *tex, DrawParms &parms, D3DCOLOR &color0, D3DCOLOR &
 	}
 	else
 	{
-		alpha = clamp<fixed_t> (parms.alpha, 0, FRACUNIT) / 65536.f;
+		alpha = clamp(parms.Alpha, 0.f, 1.f);
 	}
 
 	style.CheckFuzz();