91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* Setup for 3d library
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*
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*/
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#include <stdlib.h>
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#include "dxxerror.h"
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#include "3d.h"
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#include "globvars.h"
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#include "clipper.h"
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//#include "div0.h"
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#ifdef OGL
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#include "ogl_init.h"
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#else
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#include "texmap.h" // for init_interface_vars_to_assembler()
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#endif
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//start the frame
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void g3_start_frame(void)
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{
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fix s;
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//set int w,h & fixed-point w,h/2
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Canv_w2 = (Canvas_width = grd_curcanv->cv_bitmap.bm_w)<<15;
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Canv_h2 = (Canvas_height = grd_curcanv->cv_bitmap.bm_h)<<15;
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#ifdef __powerc
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fCanv_w2 = f2fl((Canvas_width = grd_curcanv->cv_bitmap.bm_w)<<15);
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fCanv_h2 = f2fl((Canvas_height = grd_curcanv->cv_bitmap.bm_h)<<15);
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#endif
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//compute aspect ratio for this canvas
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s = fixmuldiv(grd_curscreen->sc_aspect,Canvas_height,Canvas_width);
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if (s <= f1_0) { //scale x
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Window_scale.x = s;
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Window_scale.y = f1_0;
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}
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else {
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Window_scale.y = fixdiv(f1_0,s);
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Window_scale.x = f1_0;
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}
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Window_scale.z = f1_0; //always 1
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init_free_points();
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#ifdef OGL
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ogl_start_frame();
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#else
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init_interface_vars_to_assembler(); //for the texture-mapper
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#endif
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}
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//this doesn't do anything, but is here for completeness
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void g3_end_frame(void)
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{
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#ifdef OGL
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ogl_end_frame();
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#endif
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// Assert(free_point_num==0);
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free_point_num = 0;
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}
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