[PATCH v4 5/5] d3dx9: Implement clipping of glyphs in ID3DXFont_DrawText.

[Sven Baars]

Signed-off-by: Sven Baars 
---
 dlls/d3dx9_36/font.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/dlls/d3dx9_36/font.c b/dlls/d3dx9_36/font.c
index 4835732931..5adb2f3a89 100644
--- a/dlls/d3dx9_36/font.c
+++ b/dlls/d3dx9_36/font.c
@@ -621,7 +621,6 @@ static const WCHAR *read_line(HDC hdc, const WCHAR *str, int *count,
             }
             else if (format & DT_SINGLELINE)
             {
-                seg_len = num_fit;
                 *count = 0;
                 word_broken = TRUE;
             }
@@ -844,6 +843,21 @@ static INT WINAPI ID3DXFontImpl_DrawTextW(ID3DXFont *iface, ID3DXSprite *sprite,
                 pos.x = cell_inc.x + x + results.lpCaretPos[i];
                 pos.y = cell_inc.y + y;

+                if (!(format & DT_NOCLIP))
+                {
+                    if (pos.x > rect->right)
+                    {
+                        IDirect3DTexture9_Release(texture);
+                        continue;
+                    }
+
+                    if (pos.x + black_box.right - black_box.left > rect->right)
+                        black_box.right = black_box.left + rect->right - pos.x;
+
+                    if (pos.y + black_box.bottom - black_box.top > rect->bottom)
+                        black_box.bottom = black_box.top + rect->bottom - pos.y;
+                }
+
                 ID3DXSprite_Draw(target, texture, &black_box, NULL, &pos, color);
                 IDirect3DTexture9_Release(texture);
             }