From 8231032f899365a4c87405812452b1944a6e2c54 Mon Sep 17 00:00:00 2001
From: Rachael Alexanderson <eruanna@drdteam.org>
Date: Sat, 24 Dec 2016 19:22:31 -0500
Subject: [PATCH] - fixed a crash - tried to make MAKETRANSDOT algorithm more
 consistent with original

---
 src/v_draw.cpp  | 19 ++++++++++---------
 src/v_video.cpp | 11 +++++++++++
 2 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/src/v_draw.cpp b/src/v_draw.cpp
index 703a059ef7..b529770d6b 100644
--- a/src/v_draw.cpp
+++ b/src/v_draw.cpp
@@ -70,6 +70,7 @@ CUSTOM_CVAR(Int, uiscale, 2, CVAR_ARCHIVE | CVAR_NOINITCALL)
 		StatusBar->ScreenSizeChanged();
 	}
 }
+EXTERN_CVAR(Bool, r_blendmethod)
 
 // [RH] Stretch values to make a 320x200 image best fit the screen
 // without using fractional steppings
@@ -1009,17 +1010,17 @@ void DCanvas::PUTTRANSDOT (int xx, int yy, int basecolor, int level)
 		uint32_t *spot = (uint32_t*)GetBuffer() + oldyyshifted + xx;
 
 		uint32_t fg = swrenderer::LightBgra::shade_pal_index_simple(basecolor, swrenderer::LightBgra::calc_light_multiplier(0));
-		uint32_t fg_red = (fg >> 16) & 0xff;
-		uint32_t fg_green = (fg >> 8) & 0xff;
-		uint32_t fg_blue = fg & 0xff;
+		uint32_t fg_red = (((fg >> 16) & 0xff) * (63 - level)) >> 6;
+		uint32_t fg_green = (((fg >> 8) & 0xff) * (63 - level)) >> 6;
+		uint32_t fg_blue = ((fg & 0xff) * (63 - level)) >> 6;
 
-		uint32_t bg_red = (*spot >> 16) & 0xff;
-		uint32_t bg_green = (*spot >> 8) & 0xff;
-		uint32_t bg_blue = (*spot) & 0xff;
+		uint32_t bg_red = (((*spot >> 16) & 0xff) * level) >> 6;
+		uint32_t bg_green = (((*spot >> 8) & 0xff) * level) >> 6;
+		uint32_t bg_blue = (((*spot) & 0xff) * level) >> 6;
 
-		uint32_t red = (fg_red + bg_red + 1) / 2;
-		uint32_t green = (fg_green + bg_green + 1) / 2;
-		uint32_t blue = (fg_blue + bg_blue + 1) / 2;
+		uint32_t red = fg_red + bg_red;
+		uint32_t green = fg_green + bg_green;
+		uint32_t blue = fg_blue + bg_blue;
 
 		*spot = 0xff000000 | (red << 16) | (green << 8) | blue;
 	}
diff --git a/src/v_video.cpp b/src/v_video.cpp
index bd322bf52f..146e2eb025 100644
--- a/src/v_video.cpp
+++ b/src/v_video.cpp
@@ -424,6 +424,17 @@ void DCanvas::Dim (PalEntry color, float damount, int x1, int y1, int w, int h)
 
 		if (!r_blendmethod)
 		{
+			{
+				int amount;
+
+				amount = (int)(damount * 64);
+				bg2rgb = Col2RGB8[64 - amount];
+
+				fg = (((color.r * amount) >> 4) << 20) |
+					((color.g * amount) >> 4) |
+					(((color.b * amount) >> 4) << 10);
+			}
+
 			for (y = h; y != 0; y--)
 			{
 				for (x = w; x != 0; x--)