diff options
Diffstat (limited to 'src/r_draw.h')
-rw-r--r-- | src/r_draw.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/r_draw.h b/src/r_draw.h new file mode 100644 index 0000000..1b9bc62 --- /dev/null +++ b/src/r_draw.h | |||
@@ -0,0 +1,163 @@ | |||
1 | /* Emacs style mode select -*- C++ -*- | ||
2 | *----------------------------------------------------------------------------- | ||
3 | * | ||
4 | * | ||
5 | * PrBoom: a Doom port merged with LxDoom and LSDLDoom | ||
6 | * based on BOOM, a modified and improved DOOM engine | ||
7 | * Copyright (C) 1999 by | ||
8 | * id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman | ||
9 | * Copyright (C) 1999-2000 by | ||
10 | * Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze | ||
11 | * Copyright 2005, 2006 by | ||
12 | * Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This program is distributed in the hope that it will be useful, | ||
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
22 | * GNU General Public License for more details. | ||
23 | * | ||
24 | * You should have received a copy of the GNU General Public License | ||
25 | * along with this program; if not, write to the Free Software | ||
26 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | ||
27 | * 02111-1307, USA. | ||
28 | * | ||
29 | * DESCRIPTION: | ||
30 | * System specific interface stuff. | ||
31 | * | ||
32 | *-----------------------------------------------------------------------------*/ | ||
33 | |||
34 | #ifndef __R_DRAW__ | ||
35 | #define __R_DRAW__ | ||
36 | |||
37 | #include "r_defs.h" | ||
38 | |||
39 | #ifdef __GNUG__ | ||
40 | #pragma interface | ||
41 | #endif | ||
42 | |||
43 | enum column_pipeline_e { | ||
44 | RDC_PIPELINE_STANDARD, | ||
45 | RDC_PIPELINE_TRANSLUCENT, | ||
46 | RDC_PIPELINE_TRANSLATED, | ||
47 | RDC_PIPELINE_FUZZ, | ||
48 | RDC_PIPELINE_MAXPIPELINES, | ||
49 | }; | ||
50 | |||
51 | // Used to specify what kind of filering you want | ||
52 | enum draw_filter_type_e { | ||
53 | RDRAW_FILTER_NONE, | ||
54 | RDRAW_FILTER_POINT, | ||
55 | RDRAW_FILTER_LINEAR, | ||
56 | RDRAW_FILTER_ROUNDED, | ||
57 | RDRAW_FILTER_MAXFILTERS | ||
58 | }; | ||
59 | |||
60 | // Used to specify what kind of column edge rendering to use on masked | ||
61 | // columns. SQUARE = standard, SLOPED = slope the column edge up or down | ||
62 | // based on neighboring columns | ||
63 | enum sloped_edge_type_e { | ||
64 | RDRAW_MASKEDCOLUMNEDGE_SQUARE, | ||
65 | RDRAW_MASKEDCOLUMNEDGE_SLOPED | ||
66 | }; | ||
67 | |||
68 | // Packaged into a struct - POPE | ||
69 | typedef struct { | ||
70 | int x; | ||
71 | int yl; | ||
72 | int yh; | ||
73 | fixed_t z; // the current column z coord | ||
74 | fixed_t iscale; | ||
75 | fixed_t texturemid; | ||
76 | int texheight; // killough | ||
77 | fixed_t texu; // the current column u coord | ||
78 | const byte *source; // first pixel in a column | ||
79 | const byte *prevsource; // first pixel in previous column | ||
80 | const byte *nextsource; // first pixel in next column | ||
81 | const lighttable_t *colormap; | ||
82 | const lighttable_t *nextcolormap; | ||
83 | const byte *translation; | ||
84 | int edgeslope; // OR'ed RDRAW_EDGESLOPE_* | ||
85 | // 1 if R_DrawColumn* is currently drawing a masked column, otherwise 0 | ||
86 | int drawingmasked; | ||
87 | enum sloped_edge_type_e edgetype; | ||
88 | } draw_column_vars_t; | ||
89 | |||
90 | void R_SetDefaultDrawColumnVars(draw_column_vars_t *dcvars); | ||
91 | |||
92 | void R_VideoErase(int x, int y, int count); | ||
93 | |||
94 | typedef struct { | ||
95 | int y; | ||
96 | int x1; | ||
97 | int x2; | ||
98 | fixed_t z; // the current span z coord | ||
99 | fixed_t xfrac; | ||
100 | fixed_t yfrac; | ||
101 | fixed_t xstep; | ||
102 | fixed_t ystep; | ||
103 | const byte *source; // start of a 64*64 tile image | ||
104 | const lighttable_t *colormap; | ||
105 | const lighttable_t *nextcolormap; | ||
106 | } draw_span_vars_t; | ||
107 | |||
108 | typedef struct { | ||
109 | byte *byte_topleft; | ||
110 | unsigned short *short_topleft; | ||
111 | unsigned int *int_topleft; | ||
112 | int byte_pitch; | ||
113 | int short_pitch; | ||
114 | int int_pitch; | ||
115 | |||
116 | enum draw_filter_type_e filterwall; | ||
117 | enum draw_filter_type_e filterfloor; | ||
118 | enum draw_filter_type_e filtersprite; | ||
119 | enum draw_filter_type_e filterz; | ||
120 | enum draw_filter_type_e filterpatch; | ||
121 | |||
122 | enum sloped_edge_type_e sprite_edges; | ||
123 | enum sloped_edge_type_e patch_edges; | ||
124 | |||
125 | // Used to specify an early-out magnification threshold for filtering. | ||
126 | // If a texture is being minified (dcvars.iscale > rdraw_magThresh), then it | ||
127 | // drops back to point filtering. | ||
128 | fixed_t mag_threshold; | ||
129 | } draw_vars_t; | ||
130 | |||
131 | extern draw_vars_t drawvars; | ||
132 | |||
133 | extern byte playernumtotrans[MAXPLAYERS]; // CPhipps - what translation table for what player | ||
134 | extern byte *translationtables; | ||
135 | |||
136 | typedef void (*R_DrawColumn_f)(draw_column_vars_t *dcvars); | ||
137 | R_DrawColumn_f R_GetDrawColumnFunc(enum column_pipeline_e type, | ||
138 | enum draw_filter_type_e filter, | ||
139 | enum draw_filter_type_e filterz); | ||
140 | |||
141 | // Span blitting for rows, floor/ceiling. No Spectre effect needed. | ||
142 | typedef void (*R_DrawSpan_f)(draw_span_vars_t *dsvars); | ||
143 | R_DrawSpan_f R_GetDrawSpanFunc(enum draw_filter_type_e filter, | ||
144 | enum draw_filter_type_e filterz); | ||
145 | void R_DrawSpan(draw_span_vars_t *dsvars); | ||
146 | |||
147 | void R_InitBuffer(int width, int height); | ||
148 | |||
149 | // Initialize color translation tables, for player rendering etc. | ||
150 | void R_InitTranslationTables(void); | ||
151 | |||
152 | // Rendering function. | ||
153 | void R_FillBackScreen(void); | ||
154 | |||
155 | // If the view size is not full screen, draws a border around it. | ||
156 | void R_DrawViewBorder(void); | ||
157 | |||
158 | // haleyjd 09/13/04: new function to call from main rendering loop | ||
159 | // which gets rid of the unnecessary reset of various variables during | ||
160 | // column drawing. | ||
161 | void R_ResetColumnBuffer(void); | ||
162 | |||
163 | #endif | ||