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75e28f62 E |
1 | /* |
2 | * Copyright (C) 2011 Gilead Kutnick "Exophase" <exophase@gmail.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License as | |
6 | * published by the Free Software Foundation; either version 2 of | |
7 | * the License, or (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | */ | |
14 | ||
15 | #ifndef PSX_GPU_H | |
16 | #define PSX_GPU_H | |
17 | ||
18 | typedef enum | |
19 | { | |
20 | PRIMITIVE_TYPE_TRIANGLE = 0, | |
21 | PRIMITIVE_TYPE_SPRITE = 1, | |
22 | PRIMITIVE_TYPE_LINE = 2, | |
23 | PRIMITIVE_TYPE_UNKNOWN = 3 | |
24 | } primitive_type_enum; | |
25 | ||
26 | typedef enum | |
27 | { | |
28 | TEXTURE_MODE_4BPP = 0, | |
29 | TEXTURE_MODE_8BPP = 1, | |
30 | TEXTURE_MODE_16BPP = 2 | |
31 | } texture_mode_enum; | |
32 | ||
33 | typedef enum | |
34 | { | |
35 | BLEND_MODE_AVERAGE = 0, | |
36 | BLEND_MODE_ADD = 1, | |
37 | BLEND_MODE_SUBTRACT = 2, | |
38 | BLEND_MODE_ADD_FOURTH = 3 | |
39 | } blend_mode_enum; | |
40 | ||
41 | typedef enum | |
42 | { | |
43 | RENDER_FLAGS_MODULATE_TEXELS = 0x1, | |
44 | RENDER_FLAGS_BLEND = 0x2, | |
45 | RENDER_FLAGS_TEXTURE_MAP = 0x4, | |
46 | RENDER_FLAGS_QUAD = 0x8, | |
47 | RENDER_FLAGS_SHADE = 0x10, | |
48 | } render_flags_enum; | |
49 | ||
50 | typedef enum | |
51 | { | |
52 | RENDER_STATE_DITHER = 0x8, | |
53 | RENDER_STATE_MASK_EVALUATE = 0x20, | |
54 | } render_state_enum; | |
55 | ||
69b09c0d E |
56 | typedef enum |
57 | { | |
58 | RENDER_INTERLACE_ENABLED = 0x1, | |
f1359c57 | 59 | RENDER_INTERLACE_ODD = 0x2, |
60 | RENDER_DOUBLE_MODE = 0x4, | |
61 | } render_mode_enum; | |
69b09c0d | 62 | |
75e28f62 E |
63 | typedef struct |
64 | { | |
65 | u16 left_x; | |
66 | u16 num_blocks; | |
67 | u16 right_mask; | |
68 | u16 y; | |
69 | } edge_data_struct; | |
70 | ||
71 | // 64 bytes total | |
72 | typedef struct | |
73 | { | |
74 | // 16 bytes | |
75 | union | |
76 | { | |
77 | vec_8x16u uv; | |
78 | vec_8x16u texels; | |
79 | vec_8x16u draw_mask; | |
80 | }; | |
81 | ||
82 | // 24 bytes | |
83 | union | |
84 | { | |
85 | struct | |
86 | { | |
87 | vec_8x8u r; | |
88 | vec_8x8u g; | |
89 | vec_8x8u b; | |
90 | }; | |
91 | ||
92 | vec_8x16u pixels; | |
93 | }; | |
94 | ||
95 | // 8 bytes | |
96 | u32 draw_mask_bits; | |
97 | u16 *fb_ptr; | |
98 | ||
99 | // 16 bytes | |
100 | vec_8x16u dither_offsets; | |
101 | } block_struct; | |
102 | ||
103 | #define MAX_SPANS 512 | |
104 | #define MAX_BLOCKS 64 | |
105 | #define MAX_BLOCKS_PER_ROW 128 | |
106 | ||
107 | #define SPAN_DATA_BLOCKS_SIZE 32 | |
108 | ||
109 | typedef struct render_block_handler_struct render_block_handler_struct; | |
110 | ||
111 | typedef struct | |
112 | { | |
113 | // 144 bytes | |
114 | vec_8x16u test_mask; | |
115 | ||
116 | vec_4x32u uvrg; | |
117 | vec_4x32u uvrg_dx; | |
118 | vec_4x32u uvrg_dy; | |
119 | ||
120 | vec_4x32u u_block_span; | |
121 | vec_4x32u v_block_span; | |
122 | vec_4x32u r_block_span; | |
123 | vec_4x32u g_block_span; | |
124 | vec_4x32u b_block_span; | |
125 | ||
c1817bd9 | 126 | // 76 bytes |
75e28f62 E |
127 | u32 b; |
128 | u32 b_dy; | |
129 | ||
130 | u32 triangle_area; | |
131 | ||
132 | u32 texture_window_settings; | |
133 | u32 current_texture_mask; | |
134 | u32 viewport_mask; | |
135 | u32 dirty_textures_4bpp_mask; | |
136 | u32 dirty_textures_8bpp_mask; | |
137 | u32 dirty_textures_8bpp_alternate_mask; | |
138 | ||
139 | u32 triangle_color; | |
75e28f62 E |
140 | u32 dither_table[4]; |
141 | ||
142 | struct render_block_handler_struct *render_block_handler; | |
143 | void *texture_page_ptr; | |
3867c6ef | 144 | void *texture_page_base; |
75e28f62 E |
145 | u16 *clut_ptr; |
146 | u16 *vram_ptr; | |
c1817bd9 | 147 | u16 *vram_out_ptr; |
75e28f62 E |
148 | |
149 | // 26 bytes | |
150 | u16 render_state_base; | |
151 | u16 render_state; | |
152 | ||
153 | u16 num_spans; | |
154 | u16 num_blocks; | |
155 | ||
156 | s16 offset_x; | |
157 | s16 offset_y; | |
158 | ||
159 | u16 clut_settings; | |
160 | u16 texture_settings; | |
161 | ||
162 | s16 viewport_start_x; | |
163 | s16 viewport_start_y; | |
164 | s16 viewport_end_x; | |
165 | s16 viewport_end_y; | |
166 | ||
167 | u16 mask_msb; | |
168 | ||
169 | // 8 bytes | |
170 | u8 triangle_winding; | |
171 | ||
172 | u8 display_area_draw_enable; | |
173 | ||
174 | u8 current_texture_page; | |
175 | u8 last_8bpp_texture_page; | |
176 | ||
177 | u8 texture_mask_width; | |
178 | u8 texture_mask_height; | |
179 | u8 texture_window_x; | |
180 | u8 texture_window_y; | |
181 | ||
182 | u8 primitive_type; | |
f1359c57 | 183 | u8 render_mode; |
75e28f62 | 184 | |
c1817bd9 | 185 | // enhancement stuff |
186 | u16 *enhancement_buf_ptr; | |
187 | s16 saved_viewport_start_x; | |
188 | s16 saved_viewport_start_y; | |
189 | s16 saved_viewport_end_x; | |
190 | s16 saved_viewport_end_y; | |
191 | ||
75e28f62 | 192 | // Align up to 64 byte boundary to keep the upcoming buffers cache line |
c1817bd9 | 193 | // aligned, also make reachable with single immediate addition |
194 | u8 reserved_a[240]; | |
75e28f62 E |
195 | |
196 | // 8KB | |
197 | block_struct blocks[MAX_BLOCKS_PER_ROW]; | |
198 | ||
199 | // 14336 bytes | |
200 | vec_4x32u span_uvrg_offset[MAX_SPANS]; | |
201 | edge_data_struct span_edge_data[MAX_SPANS]; | |
202 | u32 span_b_offset[MAX_SPANS]; | |
203 | ||
75e28f62 E |
204 | u8 texture_4bpp_cache[32][256 * 256]; |
205 | u8 texture_8bpp_even_cache[16][256 * 256]; | |
206 | u8 texture_8bpp_odd_cache[16][256 * 256]; | |
75e28f62 E |
207 | } psx_gpu_struct; |
208 | ||
209 | typedef struct __attribute__((aligned(16))) | |
210 | { | |
211 | u8 u; | |
212 | u8 v; | |
213 | ||
214 | u8 r; | |
215 | u8 g; | |
216 | u8 b; | |
217 | ||
218 | u8 reserved[3]; | |
219 | ||
220 | s16 x; | |
221 | s16 y; | |
222 | } vertex_struct; | |
223 | ||
224 | void render_block_fill(psx_gpu_struct *psx_gpu, u32 color, u32 x, u32 y, | |
225 | u32 width, u32 height); | |
226 | void render_block_copy(psx_gpu_struct *psx_gpu, u16 *source, u32 x, u32 y, | |
227 | u32 width, u32 height, u32 pitch); | |
228 | void render_block_move(psx_gpu_struct *psx_gpu, u32 source_x, u32 source_y, | |
229 | u32 dest_x, u32 dest_y, u32 width, u32 height); | |
230 | ||
231 | void render_triangle(psx_gpu_struct *psx_gpu, vertex_struct *vertexes, | |
232 | u32 flags); | |
233 | void render_sprite(psx_gpu_struct *psx_gpu, s32 x, s32 y, u32 u, u32 v, | |
234 | s32 width, s32 height, u32 flags, u32 color); | |
235 | void render_line(psx_gpu_struct *gpu, vertex_struct *vertexes, u32 flags, | |
236 | u32 color); | |
237 | ||
238 | u32 texture_region_mask(s32 x1, s32 y1, s32 x2, s32 y2); | |
239 | ||
240 | void flush_render_block_buffer(psx_gpu_struct *psx_gpu); | |
241 | ||
e8c0e0bb | 242 | void initialize_psx_gpu(psx_gpu_struct *psx_gpu, u16 *vram); |
b243416b | 243 | u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command); |
75e28f62 E |
244 | |
245 | void triangle_benchmark(psx_gpu_struct *psx_gpu); | |
246 | ||
247 | #endif | |
248 |