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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 | ||
56 | typedef struct | |
57 | { | |
58 | u16 left_x; | |
59 | u16 num_blocks; | |
60 | u16 right_mask; | |
61 | u16 y; | |
62 | } edge_data_struct; | |
63 | ||
64 | // 64 bytes total | |
65 | typedef struct | |
66 | { | |
67 | // 16 bytes | |
68 | union | |
69 | { | |
70 | vec_8x16u uv; | |
71 | vec_8x16u texels; | |
72 | vec_8x16u draw_mask; | |
73 | }; | |
74 | ||
75 | // 24 bytes | |
76 | union | |
77 | { | |
78 | struct | |
79 | { | |
80 | vec_8x8u r; | |
81 | vec_8x8u g; | |
82 | vec_8x8u b; | |
83 | }; | |
84 | ||
85 | vec_8x16u pixels; | |
86 | }; | |
87 | ||
88 | // 8 bytes | |
89 | u32 draw_mask_bits; | |
90 | u16 *fb_ptr; | |
91 | ||
92 | // 16 bytes | |
93 | vec_8x16u dither_offsets; | |
94 | } block_struct; | |
95 | ||
96 | #define MAX_SPANS 512 | |
97 | #define MAX_BLOCKS 64 | |
98 | #define MAX_BLOCKS_PER_ROW 128 | |
99 | ||
100 | #define SPAN_DATA_BLOCKS_SIZE 32 | |
101 | ||
102 | typedef struct render_block_handler_struct render_block_handler_struct; | |
103 | ||
104 | typedef struct | |
105 | { | |
106 | // 144 bytes | |
107 | vec_8x16u test_mask; | |
108 | ||
109 | vec_4x32u uvrg; | |
110 | vec_4x32u uvrg_dx; | |
111 | vec_4x32u uvrg_dy; | |
112 | ||
113 | vec_4x32u u_block_span; | |
114 | vec_4x32u v_block_span; | |
115 | vec_4x32u r_block_span; | |
116 | vec_4x32u g_block_span; | |
117 | vec_4x32u b_block_span; | |
118 | ||
119 | // 72 bytes | |
120 | u32 b; | |
121 | u32 b_dy; | |
122 | ||
123 | u32 triangle_area; | |
124 | ||
125 | u32 texture_window_settings; | |
126 | u32 current_texture_mask; | |
127 | u32 viewport_mask; | |
128 | u32 dirty_textures_4bpp_mask; | |
129 | u32 dirty_textures_8bpp_mask; | |
130 | u32 dirty_textures_8bpp_alternate_mask; | |
131 | ||
132 | u32 triangle_color; | |
133 | u32 primitive_color; | |
134 | ||
135 | u32 dither_table[4]; | |
136 | ||
137 | struct render_block_handler_struct *render_block_handler; | |
138 | void *texture_page_ptr; | |
139 | u16 *clut_ptr; | |
140 | u16 *vram_ptr; | |
141 | ||
142 | // 26 bytes | |
143 | u16 render_state_base; | |
144 | u16 render_state; | |
145 | ||
146 | u16 num_spans; | |
147 | u16 num_blocks; | |
148 | ||
149 | s16 offset_x; | |
150 | s16 offset_y; | |
151 | ||
152 | u16 clut_settings; | |
153 | u16 texture_settings; | |
154 | ||
155 | s16 viewport_start_x; | |
156 | s16 viewport_start_y; | |
157 | s16 viewport_end_x; | |
158 | s16 viewport_end_y; | |
159 | ||
160 | u16 mask_msb; | |
161 | ||
162 | // 8 bytes | |
163 | u8 triangle_winding; | |
164 | ||
165 | u8 display_area_draw_enable; | |
166 | ||
167 | u8 current_texture_page; | |
168 | u8 last_8bpp_texture_page; | |
169 | ||
170 | u8 texture_mask_width; | |
171 | u8 texture_mask_height; | |
172 | u8 texture_window_x; | |
173 | u8 texture_window_y; | |
174 | ||
175 | u8 primitive_type; | |
176 | ||
177 | // Align up to 64 byte boundary to keep the upcoming buffers cache line | |
178 | // aligned | |
179 | u8 reserved_a[1]; | |
180 | ||
181 | // 8KB | |
182 | block_struct blocks[MAX_BLOCKS_PER_ROW]; | |
183 | ||
184 | // 14336 bytes | |
185 | vec_4x32u span_uvrg_offset[MAX_SPANS]; | |
186 | edge_data_struct span_edge_data[MAX_SPANS]; | |
187 | u32 span_b_offset[MAX_SPANS]; | |
188 | ||
75e28f62 E |
189 | u8 texture_4bpp_cache[32][256 * 256]; |
190 | u8 texture_8bpp_even_cache[16][256 * 256]; | |
191 | u8 texture_8bpp_odd_cache[16][256 * 256]; | |
192 | ||
193 | u32 pixel_count_mode; | |
194 | u32 pixel_compare_mode; | |
195 | ||
196 | u8 *vram_pixel_counts_a; | |
197 | u8 *vram_pixel_counts_b; | |
198 | u16 *compare_vram; | |
199 | } psx_gpu_struct; | |
200 | ||
201 | typedef struct __attribute__((aligned(16))) | |
202 | { | |
203 | u8 u; | |
204 | u8 v; | |
205 | ||
206 | u8 r; | |
207 | u8 g; | |
208 | u8 b; | |
209 | ||
210 | u8 reserved[3]; | |
211 | ||
212 | s16 x; | |
213 | s16 y; | |
214 | } vertex_struct; | |
215 | ||
216 | void render_block_fill(psx_gpu_struct *psx_gpu, u32 color, u32 x, u32 y, | |
217 | u32 width, u32 height); | |
218 | void render_block_copy(psx_gpu_struct *psx_gpu, u16 *source, u32 x, u32 y, | |
219 | u32 width, u32 height, u32 pitch); | |
220 | void render_block_move(psx_gpu_struct *psx_gpu, u32 source_x, u32 source_y, | |
221 | u32 dest_x, u32 dest_y, u32 width, u32 height); | |
222 | ||
223 | void render_triangle(psx_gpu_struct *psx_gpu, vertex_struct *vertexes, | |
224 | u32 flags); | |
225 | void render_sprite(psx_gpu_struct *psx_gpu, s32 x, s32 y, u32 u, u32 v, | |
226 | s32 width, s32 height, u32 flags, u32 color); | |
227 | void render_line(psx_gpu_struct *gpu, vertex_struct *vertexes, u32 flags, | |
228 | u32 color); | |
229 | ||
230 | u32 texture_region_mask(s32 x1, s32 y1, s32 x2, s32 y2); | |
231 | ||
232 | void flush_render_block_buffer(psx_gpu_struct *psx_gpu); | |
233 | ||
e8c0e0bb | 234 | void initialize_psx_gpu(psx_gpu_struct *psx_gpu, u16 *vram); |
75e28f62 E |
235 | void gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size); |
236 | ||
237 | void triangle_benchmark(psx_gpu_struct *psx_gpu); | |
238 | ||
239 | #endif | |
240 |