Fix for aliased fonts in the game engine.

 - Mipmaps are generated in BLF when drawing text in-game. In that case, padding around each glyph is increased to prevent bleeding.
 - Texture filtering is turned on for in-game text.
 - All glyphs are now "twisted": the leading edge is brought a small distance forward, to prevent z-fighting in overlapping (kerned) glyphs. This happens both in the game engine and the rest of the UI, but should have no effect in the UI due to Z-compression in the clipping matrix.
Reviewed and approved by bdiego; see patch [#29882] in the tracker. Tested by dfelinto.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/gameengine/GamePlayer/common/GPC_RenderTools.cpp b/source/gameengine/GamePlayer/common/GPC_RenderTools.cpp
index ffa2cb38b87..b06a9783b50 100644
--- a/source/gameengine/GamePlayer/common/GPC_RenderTools.cpp
+++ b/source/gameengine/GamePlayer/common/GPC_RenderTools.cpp
@@ -294,8 +294,8 @@ void GPC_RenderTools::RenderText3D(	int fontid,
 	/* the actual drawing */
 	glColor3fv(color);
  
+	BLF_enable(fontid, BLF_MATRIX|BLF_ASPECT|BLF_TEXFILTER);
 	/* multiply the text matrix by the object matrix */
-	BLF_enable(fontid, BLF_MATRIX|BLF_ASPECT);
 	BLF_matrix(fontid, mat);
 
 	/* aspect is the inverse scale that allows you to increase */
@@ -307,7 +307,7 @@ void GPC_RenderTools::RenderText3D(	int fontid,
 	BLF_position(fontid, 0, 0, 0);
 	BLF_draw(fontid, text, 65535);
 
-	BLF_disable(fontid, BLF_MATRIX|BLF_ASPECT);
+	BLF_disable(fontid, BLF_MATRIX|BLF_ASPECT|BLF_TEXFILTER);
 	glEnable(GL_DEPTH_TEST);
 }