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+/*******************************************************************
+ *
+ * ttraster.h v 1.4
+ *
+ * The FreeType glyph rasterizer.
+ *
+ * Copyright 1996-1999 by
+ * David Turner, Robert Wilhelm, and Werner Lemberg
+ *
+ * This file is part of the FreeType project, and may only be used
+ * modified and distributed under the terms of the FreeType project
+ * license, LICENSE.TXT. By continuing to use, modify, or distribute
+ * this file you indicate that you have read the license and
+ * understand and accept it fully.
+ *
+ * NOTES:
+ *
+ * This version supports the following:
+ *
+ * - direct grayscaling
+ * - sub-banding
+ * - drop-out modes 4 and 5
+ * - second pass for complete drop-out control (bitmap only)
+ * - variable precision
+ *
+ *
+ * Changes between 1.4 and 1.3:
+ *
+ * Mainly performance tunings:
+ *
+ * - Line_Down() and Bezier_Down() now use the functions Line_Up()
+ * and Bezier_Up() to do their work.
+ * - optimized Split_Bezier()
+ * - optimized linked lists used during sweeps
+ *
+ * Changes between 1.2 and 1.3:
+ *
+ * - made the engine optionaly re-entrant. Saves a lot
+ * of code for a moderate performance hit.
+ *
+ ******************************************************************/
+
+#ifndef TTRASTER_H
+#define TTRASTER_H
+
+#include "ttconfig.h"
+#include "freetype.h" /* for TT_Outline */
+#include "ttengine.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+ /* We provide two different builds of the scan-line converter */
+ /* The static build uses global variables and isn't */
+ /* re-entrant. */
+ /* The indirect build is re-entrant but accesses all variables */
+ /* indirectly. */
+ /* */
+ /* As a consequence, the indirect build is about 10% slower */
+ /* than the static one on a _Pentium_ (this could get worse */
+ /* on older processors), but the code size is reduced by */
+ /* more than 30% ! */
+ /* */
+ /* The indirect build is now the default, defined in */
+ /* ttconfig.h. Be careful if you experiment with this. */
+
+ /* Note also that, though its code can be re-entrant, the */
+ /* component is always used in thread-safe mode. This is */
+ /* simply due to the fact that we want to use a single */
+ /* render pool (of 64 Kb), and not to waste memory. */
+
+#ifdef TT_STATIC_RASTER
+
+#define RAS_ARGS /* void */
+#define RAS_ARG /* void */
+
+#define RAS_VARS /* void */
+#define RAS_VAR /* void */
+
+#else
+
+#define RAS_ARGS TRaster_Instance* raster,
+#define RAS_ARG TRaster_Instance* raster
+
+#define RAS_VARS raster,
+#define RAS_VAR raster
+
+#endif
+
+
+ struct TRaster_Instance_;
+ typedef struct TRaster_Instance_ TRaster_Instance;
+
+ /* Render one glyph in the target bitmap, using drop-out control */
+ /* mode 'scan'. */
+ LOCAL_DEF
+ TT_Error Render_Glyph( RAS_ARGS TT_Outline* glyph,
+ TT_Raster_Map* target );
+
+#ifdef TT_CONFIG_OPTION_GRAY_SCALING
+ /* Render one gray-level glyph in the target pixmap. */
+ /* Palette points to an array of 5 colors used for the rendering. */
+ /* Use NULL to reuse the last palette. Default is VGA graylevels. */
+ LOCAL_DEF
+ TT_Error Render_Gray_Glyph( RAS_ARGS TT_Outline* glyph,
+ TT_Raster_Map* target,
+ Byte* palette );
+#endif
+
+ /* Initialize rasterizer */
+ LOCAL_DEF
+ TT_Error TTRaster_Init( PEngine_Instance engine );
+
+ /* Finalize it */
+ LOCAL_DEF
+ TT_Error TTRaster_Done( PEngine_Instance engine );
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TTRASTER_H */
+
+
+/* END */