Add the possibility to set a 4x4 matrix to be used on blf.

This option allow the user to set a 4x4 matrix to be
multiplied before draw the text, for example:

	double *m;

	/* Get the matrix or build it! */

	BLF_matrix(m);
	BLF_enable(BLF_MATRIX);

	/* set color, size, etc and draw! */

	BLF_disable(BLF_MATRIX);

You don't need the last line (disable), but remember
that if you use the font to draw in any other place,
the matrix will be used!.

The GL code is:

	glPushMatrix();
	glMultMatrixd(m);
	glTranslatef();
	glScalef();
	glRotatef();

	glPopMatrix();

Let's Dalai test this!!! :D

1 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/blenfont/intern/blf_internal_types.h b/source/blender/blenfont/intern/blf_internal_types.h
index 70318c51823..04afaeb2e97 100644
--- a/source/blender/blenfont/intern/blf_internal_types.h
+++ b/source/blender/blenfont/intern/blf_internal_types.h
@@ -154,8 +154,10 @@ typedef struct FontBLF {
 	/* shadow color. */
 	float shadow_col[4];
 	
-	/* this is the matrix that we load before rotate/scale/translate. */
-	float mat[4][4];
+	/* Multiplied this matrix with the current one before
+	 * draw the text! see blf_draw__start.
+	 */
+	double m[16];
 
 	/* clipping rectangle. */
 	rctf clip_rec;