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doomclassic/doom/r_draw.h

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+/*
+===========================================================================
+
+Doom 3 BFG Edition GPL Source Code
+Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 
+
+This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  
+
+Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
+
+===========================================================================
+*/
+
+#ifndef __R_DRAW__
+#define __R_DRAW__
+
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+
+extern lighttable_t*	dc_colormap;
+extern int		dc_x;
+extern int		dc_yl;
+extern int		dc_yh;
+extern fixed_t		dc_iscale;
+extern fixed_t		dc_texturemid;
+
+// first pixel in a column
+extern byte*		dc_source;		
+
+
+// The span blitting interface.
+// Hook in assembler or system specific BLT
+//  here.
+void 	R_DrawColumn ( lighttable_t * dc_colormap,
+						byte * dc_source );
+
+void 	R_DrawColumnLow ( lighttable_t * dc_colormap,
+						  byte * dc_source );
+
+// The Spectre/Invisibility effect.
+void 	R_DrawFuzzColumn ( lighttable_t * dc_colormap,
+						  byte * dc_source );
+void 	R_DrawFuzzColumnLow ( lighttable_t * dc_colormap,
+						  byte * dc_source );
+
+// Draw with color translation tables,
+//  for player sprite rendering,
+//  Green/Red/Blue/Indigo shirts.
+void	R_DrawTranslatedColumn ( lighttable_t * dc_colormap,
+						  byte * dc_source );
+void	R_DrawTranslatedColumnLow ( lighttable_t * dc_colormap,
+						  byte * dc_source );
+
+void
+R_VideoErase
+( unsigned	ofs,
+  int		count );
+
+extern int		ds_y;
+extern int		ds_x1;
+extern int		ds_x2;
+
+extern lighttable_t*	ds_colormap;
+
+extern fixed_t		ds_xfrac;
+extern fixed_t		ds_yfrac;
+extern fixed_t		ds_xstep;
+extern fixed_t		ds_ystep;
+
+// start of a 64*64 tile image
+extern byte*		ds_source;		
+
+extern byte*		translationtables;
+extern byte*		dc_translation;
+
+
+// Span blitting for rows, floor/ceiling.
+// No Sepctre effect needed.
+void 	R_DrawSpan (
+	fixed_t xfrac,
+	fixed_t yfrac,
+	fixed_t ds_y,
+	int ds_x1,
+	int ds_x2,
+	fixed_t ds_xstep,
+	fixed_t ds_ystep,
+	lighttable_t * ds_colormap,
+	byte * ds_source );
+
+// Low resolution mode, 160x200?
+void 	R_DrawSpanLow ( fixed_t xfrac,
+				  fixed_t yfrac,
+				  fixed_t ds_y,
+				  int ds_x1,
+				  int ds_x2,
+				  fixed_t ds_xstep,
+				  fixed_t ds_ystep,
+				  lighttable_t * ds_colormap,
+				  byte * ds_source );
+
+
+void
+R_InitBuffer
+( int		width,
+  int		height );
+
+
+// Initialize color translation tables,
+//  for player rendering etc.
+void	R_InitTranslationTables (void);
+
+
+
+// Rendering function.
+void R_FillBackScreen (void);
+
+// If the view size is not full screen, draws a border around it.
+void R_DrawViewBorder (void);
+
+
+
+#endif
+