From c6260bb35530edc80e598df3168d85cb172ba878 Mon Sep 17 00:00:00 2001
From: minjaesong <alswo9628@gmail.com>
Date: Sun, 15 Nov 2020 23:59:07 +0900
Subject: [PATCH] graphicsadapter: allowing font rom to be greyscale instead of
 clear B/W

---
 src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt b/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
index b973d35..b997482 100644
--- a/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
+++ b/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt
@@ -932,13 +932,8 @@ void main() {
 
     vec4 tileCol = texture2D(tilesAtlas, finalUVCoordForTile);
 
-    // apply colour
-    if (tileCol.r > 0) {
-        gl_FragColor = foreColFromMap;
-    }
-    else {
-        gl_FragColor = backColFromMap;
-    }
+    // apply colour. I'm expecting FONT ROM IMAGE to be greyscale
+    gl_FragColor = mix(backColFromMap, foreColFromMap, tileCol.r);
 }
 """.trimIndent()