filename | src/pvr2/scene.h |
changeset | 669:ab344e42bca9 |
prev | 653:3202ff01d48e |
next | 687:6bdc2b7032ea |
author | nkeynes |
date | Mon May 12 10:00:13 2008 +0000 (15 years ago) |
permissions | -rw-r--r-- |
last change | Cleanup most of the -Wall warnings (getting a bit sloppy...) Convert FP code to use fixed banks rather than indirect pointer (3-4% faster this way now) |
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nkeynes@653 | 1 | /** |
nkeynes@653 | 2 | * $Id$ |
nkeynes@653 | 3 | * |
nkeynes@653 | 4 | * PVR2 rendering functions (private) |
nkeynes@653 | 5 | * |
nkeynes@653 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@653 | 7 | * |
nkeynes@653 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@653 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@653 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@653 | 11 | * (at your option) any later version. |
nkeynes@653 | 12 | * |
nkeynes@653 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@653 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@653 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@653 | 16 | * GNU General Public License for more details. |
nkeynes@653 | 17 | */ |
nkeynes@653 | 18 | |
nkeynes@653 | 19 | #ifndef lxdream_render_H |
nkeynes@653 | 20 | #define lxdream_render_H 1 |
nkeynes@653 | 21 | |
nkeynes@653 | 22 | /************************* Intermediate vertex buffer ************************/ |
nkeynes@653 | 23 | |
nkeynes@653 | 24 | typedef enum { |
nkeynes@653 | 25 | SORT_NEVER = 0, |
nkeynes@653 | 26 | SORT_TILEFLAG = 1, /* In this mode, sorting is controlled by the per-segment flag */ |
nkeynes@653 | 27 | SORT_ALWAYS = 2 |
nkeynes@653 | 28 | } tile_sort_mode_t; |
nkeynes@653 | 29 | |
nkeynes@653 | 30 | struct vertex_struct { |
nkeynes@653 | 31 | float u,v; |
nkeynes@653 | 32 | uint32_t rgba; |
nkeynes@653 | 33 | float x,y,z; |
nkeynes@653 | 34 | uint32_t offset_rgba; |
nkeynes@653 | 35 | }; |
nkeynes@653 | 36 | |
nkeynes@653 | 37 | struct polygon_struct { |
nkeynes@653 | 38 | uint32_t *context; |
nkeynes@653 | 39 | int cull; // culling mode |
nkeynes@653 | 40 | uint32_t vertex_count; // number of vertexes in polygon |
nkeynes@653 | 41 | uint32_t tex_id; |
nkeynes@653 | 42 | int32_t vertex_index; // index of first vertex in vertex buffer |
nkeynes@653 | 43 | uint32_t mod_tex_id; |
nkeynes@653 | 44 | int32_t mod_vertex_index; // index of first modified vertex in vertex buffer |
nkeynes@653 | 45 | float center_z; |
nkeynes@653 | 46 | struct polygon_struct *next; // chain for tri/quad arrays |
nkeynes@653 | 47 | }; |
nkeynes@653 | 48 | |
nkeynes@653 | 49 | void pvr2_scene_init(void); |
nkeynes@653 | 50 | void pvr2_scene_read(void); |
nkeynes@653 | 51 | void pvr2_scene_shutdown(); |
nkeynes@653 | 52 | |
nkeynes@669 | 53 | uint32_t pvr2_scene_buffer_width(); |
nkeynes@669 | 54 | uint32_t pvr2_scene_buffer_height(); |
nkeynes@669 | 55 | |
nkeynes@669 | 56 | extern unsigned char *video_base; |
nkeynes@653 | 57 | |
nkeynes@653 | 58 | /** |
nkeynes@653 | 59 | * Maximum possible size of the vertex buffer. This is figured as follows: |
nkeynes@653 | 60 | * PVR2 polygon buffer is limited to 4MB. The tightest polygon format |
nkeynes@653 | 61 | * is 3 vertexes in 48 bytes = 16 bytes/vertex, (shadow triangle) |
nkeynes@653 | 62 | * (the next tightest is 8 vertex in 140 bytes (6-strip colour-only)). |
nkeynes@653 | 63 | * giving a theoretical maximum of 262144 vertexes. |
nkeynes@653 | 64 | * The expanded structure is 44 bytes/vertex, giving |
nkeynes@653 | 65 | * 11534336 bytes... |
nkeynes@653 | 66 | */ |
nkeynes@653 | 67 | #define MAX_VERTEXES 262144 |
nkeynes@653 | 68 | #define MAX_VERTEX_BUFFER_SIZE (MAX_VERTEXES*sizeof(struct vertex_struct)) |
nkeynes@653 | 69 | |
nkeynes@653 | 70 | /** |
nkeynes@653 | 71 | * Maximum polygons - smallest is 1 polygon in 48 bytes, giving |
nkeynes@653 | 72 | * 87381 |
nkeynes@653 | 73 | * |
nkeynes@653 | 74 | */ |
nkeynes@653 | 75 | #define MAX_POLYGONS 87382 |
nkeynes@653 | 76 | #define MAX_POLY_BUFFER_SIZE (MAX_POLYGONS*sizeof(struct polygon_struct)) |
nkeynes@653 | 77 | #define BUF_POLY_MAP_SIZE (4 MB) |
nkeynes@653 | 78 | |
nkeynes@653 | 79 | /*************************************************************************/ |
nkeynes@653 | 80 | |
nkeynes@653 | 81 | /* Scene data - this structure holds all the intermediate data used during |
nkeynes@653 | 82 | * the rendering process. |
nkeynes@653 | 83 | * |
nkeynes@653 | 84 | * Special note: if vbo_supported == FALSE, then vertex_array points to a |
nkeynes@653 | 85 | * malloced chunk of system RAM. Otherwise, vertex_array will be either NULL |
nkeynes@653 | 86 | * (if the VBO is unmapped), or a pointer into a chunk of GL managed RAM |
nkeynes@653 | 87 | * (possibly direct-mapped VRAM). |
nkeynes@653 | 88 | */ |
nkeynes@653 | 89 | struct pvr2_scene_struct { |
nkeynes@653 | 90 | /** GL ID of the VBO used by the scene (or 0 if VBOs are not in use). */ |
nkeynes@653 | 91 | GLuint vbo_id; |
nkeynes@653 | 92 | /** Pointer to the vertex array data, or NULL for unmapped VBOs */ |
nkeynes@653 | 93 | struct vertex_struct *vertex_array; |
nkeynes@653 | 94 | /** Current allocated size (in bytes) of the vertex array */ |
nkeynes@653 | 95 | uint32_t vertex_array_size; |
nkeynes@653 | 96 | /** Total number of vertexes in the scene (note modified vertexes |
nkeynes@653 | 97 | * count for 2 vertexes */ |
nkeynes@653 | 98 | uint32_t vertex_count; |
nkeynes@653 | 99 | |
nkeynes@653 | 100 | /** Pointer to the polygon data for the scene (main ram). |
nkeynes@653 | 101 | * This will always have room for at least MAX_POLYGONS */ |
nkeynes@653 | 102 | struct polygon_struct *poly_array; |
nkeynes@653 | 103 | /** Total number of polygons in the scene */ |
nkeynes@653 | 104 | uint32_t poly_count; |
nkeynes@653 | 105 | |
nkeynes@653 | 106 | /** Image bounds in 3D - x1,x2,y1,y2,z1,z2 |
nkeynes@653 | 107 | * x and y values are determined by the clip planes, while z values are |
nkeynes@653 | 108 | * determined from the vertex data itself. |
nkeynes@653 | 109 | */ |
nkeynes@653 | 110 | float bounds[6]; |
nkeynes@653 | 111 | |
nkeynes@653 | 112 | /* Total size of the image buffer, determined by the tile map used to |
nkeynes@653 | 113 | * render the scene */ |
nkeynes@653 | 114 | uint32_t buffer_width, buffer_height; |
nkeynes@653 | 115 | |
nkeynes@653 | 116 | /** True if modifier volumes use the two-parameter form, False if they |
nkeynes@653 | 117 | * use the cheap-shadow option. |
nkeynes@653 | 118 | */ |
nkeynes@653 | 119 | gboolean full_shadow; |
nkeynes@653 | 120 | /** Specifies the translucency auto-sort mode for the scene */ |
nkeynes@653 | 121 | tile_sort_mode_t sort_mode; |
nkeynes@653 | 122 | |
nkeynes@653 | 123 | /** Pointer to the start of the tile segment list in PVR2 VRAM (32-bit) */ |
nkeynes@653 | 124 | struct tile_segment *segment_list; |
nkeynes@653 | 125 | /** Map from PVR2 polygon address to an element of poly_array. */ |
nkeynes@653 | 126 | struct polygon_struct **buf_to_poly_map; |
nkeynes@653 | 127 | /** Pointer to the start of the raw polygon buffer in PVR2 VRAM (32-bit). |
nkeynes@653 | 128 | * Also only used during parsing */ |
nkeynes@653 | 129 | uint32_t *pvr2_pbuf; |
nkeynes@653 | 130 | /** Current vertex index during parsing */ |
nkeynes@653 | 131 | uint32_t vertex_index; |
nkeynes@653 | 132 | }; |
nkeynes@653 | 133 | |
nkeynes@653 | 134 | /** |
nkeynes@653 | 135 | * Current scene structure. Note this should only be written to by vertex bufer |
nkeynes@653 | 136 | * functions |
nkeynes@653 | 137 | */ |
nkeynes@653 | 138 | extern struct pvr2_scene_struct pvr2_scene; |
nkeynes@653 | 139 | |
nkeynes@653 | 140 | |
nkeynes@653 | 141 | #endif /* !lxdream_render_H */ |
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