Commit | Line | Data |
---|---|---|
030d1121 | 1 | /*************************************************************************** |
2 | * Copyright (C) 2010 PCSX4ALL Team * | |
3 | * Copyright (C) 2010 Unai * | |
4 | * Copyright (C) 2016 Senquack (dansilsby <AT> gmail <DOT> com) * | |
5 | * * | |
6 | * This program is free software; you can redistribute it and/or modify * | |
7 | * it under the terms of the GNU General Public License as published by * | |
8 | * the Free Software Foundation; either version 2 of the License, or * | |
9 | * (at your option) any later version. * | |
10 | * * | |
11 | * This program is distributed in the hope that it will be useful, * | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
14 | * GNU General Public License for more details. * | |
15 | * * | |
16 | * You should have received a copy of the GNU General Public License * | |
17 | * along with this program; if not, write to the * | |
18 | * Free Software Foundation, Inc., * | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * | |
20 | ***************************************************************************/ | |
21 | ||
22 | #ifndef GPU_UNAI_H | |
23 | #define GPU_UNAI_H | |
24 | ||
25 | #include "gpu.h" | |
26 | ||
27 | // Header shared between both standalone gpu_unai (gpu.cpp) and new | |
28 | // gpulib-compatible gpu_unai (gpulib_if.cpp) | |
29 | // -> Anything here should be for gpu_unai's private use. <- | |
30 | ||
31 | /////////////////////////////////////////////////////////////////////////////// | |
32 | // Compile Options | |
33 | ||
34 | //#define ENABLE_GPU_NULL_SUPPORT // Enables NullGPU support | |
35 | //#define ENABLE_GPU_LOG_SUPPORT // Enables gpu logger, very slow only for windows debugging | |
36 | //#define ENABLE_GPU_ARMV7 // Enables ARMv7 optimized assembly | |
37 | ||
38 | //Poly routine options (default is integer math and accurate division) | |
39 | //#define GPU_UNAI_USE_FLOATMATH // Use float math in poly routines | |
40 | //#define GPU_UNAI_USE_FLOAT_DIV_MULTINV // If GPU_UNAI_USE_FLOATMATH is defined, | |
41 | // use multiply-by-inverse for division | |
42 | //#define GPU_UNAI_USE_INT_DIV_MULTINV // If GPU_UNAI_USE_FLOATMATH is *not* | |
43 | // defined, use old inaccurate division | |
44 | ||
45 | ||
46 | #define GPU_INLINE static inline __attribute__((always_inline)) | |
47 | #define INLINE static inline __attribute__((always_inline)) | |
48 | ||
49 | #define u8 uint8_t | |
50 | #define s8 int8_t | |
51 | #define u16 uint16_t | |
52 | #define s16 int16_t | |
53 | #define u32 uint32_t | |
54 | #define s32 int32_t | |
55 | #define s64 int64_t | |
56 | ||
4949d4ff PC |
57 | typedef struct { |
58 | u32 v; | |
59 | } le32_t; | |
60 | ||
61 | typedef struct { | |
62 | u16 v; | |
63 | } le16_t; | |
64 | ||
65 | static inline u32 le32_to_u32(le32_t le) | |
66 | { | |
67 | return LE32TOH(le.v); | |
68 | } | |
69 | ||
70 | static inline s32 le32_to_s32(le32_t le) | |
71 | { | |
72 | return (int32_t) LE32TOH(le.v); | |
73 | } | |
74 | ||
75 | static inline u32 le32_raw(le32_t le) | |
76 | { | |
77 | return le.v; | |
78 | } | |
79 | ||
80 | static inline le32_t u32_to_le32(u32 u) | |
81 | { | |
82 | return (le32_t){ .v = HTOLE32(u) }; | |
83 | } | |
84 | ||
85 | static inline u16 le16_to_u16(le16_t le) | |
86 | { | |
87 | return LE16TOH(le.v); | |
88 | } | |
89 | ||
90 | static inline s16 le16_to_s16(le16_t le) | |
91 | { | |
92 | return (int16_t) LE16TOH(le.v); | |
93 | } | |
94 | ||
95 | static inline u16 le16_raw(le16_t le) | |
96 | { | |
97 | return le.v; | |
98 | } | |
99 | ||
100 | static inline le16_t u16_to_le16(u16 u) | |
101 | { | |
102 | return (le16_t){ .v = HTOLE16(u) }; | |
103 | } | |
104 | ||
030d1121 | 105 | union PtrUnion |
106 | { | |
4949d4ff PC |
107 | le32_t *U4; |
108 | le16_t *U2; | |
030d1121 | 109 | u8 *U1; |
030d1121 | 110 | void *ptr; |
111 | }; | |
112 | ||
113 | union GPUPacket | |
114 | { | |
4949d4ff PC |
115 | le32_t U4[16]; |
116 | le16_t U2[32]; | |
030d1121 | 117 | u8 U1[64]; |
030d1121 | 118 | }; |
119 | ||
120 | template<class T> static inline void SwapValues(T &x, T &y) | |
121 | { | |
122 | T tmp(x); x = y; y = tmp; | |
123 | } | |
124 | ||
125 | template<typename T> | |
126 | static inline T Min2 (const T a, const T b) | |
127 | { | |
128 | return (a<b)?a:b; | |
129 | } | |
130 | ||
131 | template<typename T> | |
132 | static inline T Min3 (const T a, const T b, const T c) | |
133 | { | |
134 | return Min2(Min2(a,b),c); | |
135 | } | |
136 | ||
137 | template<typename T> | |
138 | static inline T Max2 (const T a, const T b) | |
139 | { | |
140 | return (a>b)?a:b; | |
141 | } | |
142 | ||
143 | template<typename T> | |
144 | static inline T Max3 (const T a, const T b, const T c) | |
145 | { | |
146 | return Max2(Max2(a,b),c); | |
147 | } | |
148 | ||
149 | ||
150 | /////////////////////////////////////////////////////////////////////////////// | |
151 | // GPU Raster Macros | |
152 | ||
153 | // Convert 24bpp color parameter of GPU command to 16bpp (15bpp + mask bit) | |
154 | #define GPU_RGB16(rgb) ((((rgb)&0xF80000)>>9)|(((rgb)&0xF800)>>6)|(((rgb)&0xF8)>>3)) | |
155 | ||
156 | // Sign-extend 11-bit coordinate command param | |
157 | #define GPU_EXPANDSIGN(x) (((s32)(x)<<(32-11))>>(32-11)) | |
158 | ||
159 | // Max difference between any two X or Y primitive coordinates | |
160 | #define CHKMAX_X 1024 | |
161 | #define CHKMAX_Y 512 | |
162 | ||
163 | #define FRAME_BUFFER_SIZE (1024*512*2) | |
164 | #define FRAME_WIDTH 1024 | |
165 | #define FRAME_HEIGHT 512 | |
166 | #define FRAME_OFFSET(x,y) (((y)<<10)+(x)) | |
167 | #define FRAME_BYTE_STRIDE 2048 | |
168 | #define FRAME_BYTES_PER_PIXEL 2 | |
169 | ||
170 | static inline s32 GPU_DIV(s32 rs, s32 rt) | |
171 | { | |
172 | return rt ? (rs / rt) : (0); | |
173 | } | |
174 | ||
175 | // 'Unsafe' version of above that doesn't check for div-by-zero | |
176 | #define GPU_FAST_DIV(rs, rt) ((signed)(rs) / (signed)(rt)) | |
177 | ||
178 | struct gpu_unai_t { | |
179 | u32 GPU_GP1; | |
180 | GPUPacket PacketBuffer; | |
4949d4ff | 181 | le16_t *vram; |
030d1121 | 182 | |
43047988 JW |
183 | #ifdef USE_GPULIB |
184 | u16 *downscale_vram; | |
185 | #endif | |
030d1121 | 186 | //////////////////////////////////////////////////////////////////////////// |
187 | // Variables used only by older standalone version of gpu_unai (gpu.cpp) | |
188 | #ifndef USE_GPULIB | |
189 | u32 GPU_GP0; | |
190 | u32 tex_window; // Current texture window vals (set by GP0(E2h) cmd) | |
191 | s32 PacketCount; | |
192 | s32 PacketIndex; | |
193 | bool fb_dirty; // Framebuffer is dirty (according to GPU) | |
194 | ||
195 | // Display status | |
196 | // NOTE: Standalone older gpu_unai didn't care about horiz display range | |
197 | u16 DisplayArea[6]; // [0] : Start of display area (in VRAM) X | |
198 | // [1] : Start of display area (in VRAM) Y | |
199 | // [2] : Display mode resolution HORIZONTAL | |
200 | // [3] : Display mode resolution VERTICAL | |
201 | // [4] : Vertical display range (on TV) START | |
202 | // [5] : Vertical display range (on TV) END | |
203 | ||
204 | //////////////////////////////////////////////////////////////////////////// | |
205 | // Dma Transfers info | |
206 | struct { | |
207 | s32 px,py; | |
208 | s32 x_end,y_end; | |
4949d4ff | 209 | le16_t* pvram; |
030d1121 | 210 | u32 *last_dma; // Last dma pointer |
211 | bool FrameToRead; // Load image in progress | |
212 | bool FrameToWrite; // Store image in progress | |
213 | } dma; | |
214 | ||
215 | //////////////////////////////////////////////////////////////////////////// | |
216 | // Frameskip | |
217 | struct { | |
218 | int skipCount; // Frame skip (0,1,2,3...) | |
219 | bool isSkip; // Skip frame (according to GPU) | |
220 | bool skipFrame; // Skip this frame (according to frame skip) | |
221 | bool wasSkip; // Skip frame old value (according to GPU) | |
222 | bool skipGPU; // Skip GPU primitives | |
223 | } frameskip; | |
224 | #endif | |
225 | // END of standalone gpu_unai variables | |
226 | //////////////////////////////////////////////////////////////////////////// | |
227 | ||
228 | u32 TextureWindowCur; // Current setting from last GP0(0xE2) cmd (raw form) | |
229 | u8 TextureWindow[4]; // [0] : Texture window offset X | |
230 | // [1] : Texture window offset Y | |
231 | // [2] : Texture window mask X | |
232 | // [3] : Texture window mask Y | |
233 | ||
234 | u16 DrawingArea[4]; // [0] : Drawing area top left X | |
235 | // [1] : Drawing area top left Y | |
236 | // [2] : Drawing area bottom right X | |
237 | // [3] : Drawing area bottom right Y | |
238 | ||
239 | s16 DrawingOffset[2]; // [0] : Drawing offset X (signed) | |
240 | // [1] : Drawing offset Y (signed) | |
241 | ||
4949d4ff PC |
242 | le16_t* TBA; // Ptr to current texture in VRAM |
243 | le16_t* CBA; // Ptr to current CLUT in VRAM | |
030d1121 | 244 | |
245 | //////////////////////////////////////////////////////////////////////////// | |
246 | // Inner Loop parameters | |
247 | ||
248 | // 22.10 Fixed-pt texture coords, mask, scanline advance | |
249 | // NOTE: U,V are no longer packed together into one u32, this proved to be | |
250 | // too imprecise, leading to pixel dropouts. Example: NFS3's skybox. | |
251 | u32 u, v; | |
252 | u32 u_msk, v_msk; | |
253 | s32 u_inc, v_inc; | |
254 | ||
255 | // Color for Gouraud-shaded prims | |
256 | // Packed fixed-pt 8.3:8.3:8.2 rgb triplet | |
257 | // layout: rrrrrrrrXXXggggggggXXXbbbbbbbbXX | |
258 | // ^ bit 31 ^ bit 0 | |
259 | u32 gCol; | |
260 | u32 gInc; // Increment along scanline for gCol | |
261 | ||
262 | // Color for flat-shaded, texture-blended prims | |
263 | u8 r5, g5, b5; // 5-bit light for undithered prims | |
264 | u8 r8, g8, b8; // 8-bit light for dithered prims | |
265 | ||
266 | // Color for flat-shaded, untextured prims | |
267 | u16 PixelData; // bgr555 color for untextured flat-shaded polys | |
268 | ||
269 | // End of inner Loop parameters | |
270 | //////////////////////////////////////////////////////////////////////////// | |
271 | ||
272 | ||
273 | u8 blit_mask; // Determines what pixels to skip when rendering. | |
274 | // Only useful on low-resolution devices using | |
275 | // a simple pixel-dropping downscaler for PS1 | |
276 | // high-res modes. See 'pixel_skip' option. | |
277 | ||
278 | u8 ilace_mask; // Determines what lines to skip when rendering. | |
279 | // Normally 0 when PS1 240 vertical res is in | |
280 | // use and ilace_force is 0. When running in | |
281 | // PS1 480 vertical res on a low-resolution | |
282 | // device (320x240), will usually be set to 1 | |
283 | // so odd lines are not rendered. (Unless future | |
284 | // full-screen scaling option is in use ..TODO) | |
285 | ||
286 | bool prog_ilace_flag; // Tracks successive frames for 'prog_ilace' option | |
287 | ||
288 | u8 BLEND_MODE; | |
289 | u8 TEXT_MODE; | |
290 | u8 Masking; | |
291 | ||
292 | u16 PixelMSB; | |
293 | ||
294 | gpu_unai_config_t config; | |
295 | ||
296 | u8 LightLUT[32*32]; // 5-bit lighting LUT (gpu_inner_light.h) | |
297 | u32 DitherMatrix[64]; // Matrix of dither coefficients | |
298 | }; | |
299 | ||
300 | static gpu_unai_t gpu_unai; | |
301 | ||
302 | // Global config that frontend can alter.. Values are read in GPU_init(). | |
303 | // TODO: if frontend menu modifies a setting, add a function that can notify | |
304 | // GPU plugin to use new setting. | |
305 | gpu_unai_config_t gpu_unai_config_ext; | |
306 | ||
307 | /////////////////////////////////////////////////////////////////////////////// | |
308 | // Internal inline funcs to get option status: (Allows flexibility) | |
309 | static inline bool LightingEnabled() | |
310 | { | |
311 | return gpu_unai.config.lighting; | |
312 | } | |
313 | ||
314 | static inline bool FastLightingEnabled() | |
315 | { | |
316 | return gpu_unai.config.fast_lighting; | |
317 | } | |
318 | ||
319 | static inline bool BlendingEnabled() | |
320 | { | |
321 | return gpu_unai.config.blending; | |
322 | } | |
323 | ||
324 | static inline bool DitheringEnabled() | |
325 | { | |
326 | return gpu_unai.config.dithering; | |
327 | } | |
328 | ||
329 | // For now, this is just for development/experimentation purposes.. | |
330 | // If modified to return true, it will allow ignoring the status register | |
331 | // bit 9 setting (dither enable). It will still restrict dithering only | |
332 | // to Gouraud-shaded or texture-blended polys. | |
333 | static inline bool ForcedDitheringEnabled() | |
334 | { | |
335 | return false; | |
336 | } | |
337 | ||
338 | static inline bool ProgressiveInterlaceEnabled() | |
339 | { | |
340 | #ifdef USE_GPULIB | |
341 | // Using this old option greatly decreases quality of image. Disabled | |
342 | // for now when using new gpulib, since it also adds more work in loops. | |
343 | return false; | |
344 | #else | |
345 | return gpu_unai.config.prog_ilace; | |
346 | #endif | |
347 | } | |
348 | ||
349 | // For now, 320x240 output resolution is assumed, using simple line-skipping | |
350 | // and pixel-skipping downscaler. | |
351 | // TODO: Flesh these out so they return useful values based on whether | |
352 | // running on higher-res device or a resampling downscaler is enabled. | |
353 | static inline bool PixelSkipEnabled() | |
354 | { | |
43047988 | 355 | return gpu_unai.config.pixel_skip || gpu_unai.config.scale_hires; |
030d1121 | 356 | } |
357 | ||
358 | static inline bool LineSkipEnabled() | |
359 | { | |
360 | return true; | |
361 | } | |
362 | ||
363 | #endif // GPU_UNAI_H |