Engine directory for ticket #1

Engine/source/core/bitRender.h

@@ -0,0 +1,59 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// 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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS 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 _BITRENDER_H_
+#define _BITRENDER_H_
+
+#ifndef _MMATH_H_
+#include "math/mMath.h"
+#endif
+
+/// Functions for rendering to 1bpp bitmaps.
+///
+/// Used primarily for fast shadow rendering.
+struct BitRender
+{
+   /// Render a triangle to a bitmap of 1-bit per pixel and size dim X dim.
+   static void render(const Point2I *, const Point2I *, const Point2I *, S32 dim, U32 * bits);
+
+   /// Render a number of triangle strips to 1-bit per pixel bmp of size dim by dim.
+   static void render_strips(const U8 * draw, S32 numDraw, S32 szDraw, const U16 * indices, const Point2I * points, S32 dim, U32 * bits);
+
+   /// Render a number of triangles to 1-bit per pixel bmp of size dim by dim.
+   static void render_tris(const U8 * draw, S32 numDraw, S32 szDraw, const U16 * indices, const Point2I * points, S32 dim, U32 * bits);
+
+   /// @name Render Bits
+   /// These are used to convert a 1bpp bitmap to an 8bpp bitmap.
+   ///
+   /// @see Shadow::endRenderToBitmap
+   /// @{
+
+   /// Render bits to the bitmap.
+   static void bitTo8Bit(U32 * bits, U32 * eightBits, S32 dim);
+
+   /// Render bits to the bitmap, with gaussian pass.
+   static void bitTo8Bit_3(U32 * bits, U32 * eightBits, S32 dim);
+   /// @}
+};
+
+#endif // _BIT_RENDER_H_
+