st/vega: Add primitive text support.

Optional features such as auth-hinting are not implemented.  There is no
anti-aliasing, and no effort is done to keep the glyph origin integral.
So the text quality is poor.

1 files changed, 71 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/vega/text.h b/src/gallium/state_trackers/vega/text.h
new file mode 100644
index 0000000000..6b3fa7323e
--- /dev/null
+++ b/src/gallium/state_trackers/vega/text.h
@@ -0,0 +1,71 @@
+/**************************************************************************
+ *
+ * Copyright 2010 LunarG, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef _TEXT_H
+#define _TEXT_H
+
+#include "vg_context.h"
+#include "cso_cache/cso_hash.h"
+
+struct vg_font;
+struct vg_image;
+struct path;
+
+struct vg_font *font_create(VGint glyphCapacityHint);
+void font_destroy(struct vg_font *font);
+
+void font_set_glyph_to_path(struct vg_font *font,
+                            VGuint glyphIndex,
+                            struct path *path,
+                            VGboolean isHinted,
+                            const VGfloat glyphOrigin[2],
+                            const VGfloat escapement[2]);
+
+void font_set_glyph_to_image(struct vg_font *font,
+                             VGuint glyphIndex,
+                             struct vg_image *image,
+                             const VGfloat glyphOrigin[2],
+                             const VGfloat escapement[2]);
+
+void font_clear_glyph(struct vg_font *font,
+                      VGuint glyphIndex);
+
+void font_draw_glyph(struct vg_font *font,
+                     VGuint glyphIndex,
+                     VGbitfield paintModes,
+                     VGboolean allowAutoHinting);
+
+void font_draw_glyphs(struct vg_font *font,
+                      VGint glyphCount,
+                      const VGuint *glyphIndices,
+                      const VGfloat *adjustments_x,
+                      const VGfloat *adjustments_y,
+                      VGbitfield paintModes,
+                      VGboolean allowAutoHinting);
+
+VGint font_num_glyphs(struct vg_font *font);
+
+#endif /* _TEXT_H */