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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 | ||
57 | union PtrUnion | |
58 | { | |
59 | u32 *U4; | |
60 | s32 *S4; | |
61 | u16 *U2; | |
62 | s16 *S2; | |
63 | u8 *U1; | |
64 | s8 *S1; | |
65 | void *ptr; | |
66 | }; | |
67 | ||
68 | union GPUPacket | |
69 | { | |
70 | u32 U4[16]; | |
71 | s32 S4[16]; | |
72 | u16 U2[32]; | |
73 | s16 S2[32]; | |
74 | u8 U1[64]; | |
75 | s8 S1[64]; | |
76 | }; | |
77 | ||
78 | template<class T> static inline void SwapValues(T &x, T &y) | |
79 | { | |
80 | T tmp(x); x = y; y = tmp; | |
81 | } | |
82 | ||
83 | template<typename T> | |
84 | static inline T Min2 (const T a, const T b) | |
85 | { | |
86 | return (a<b)?a:b; | |
87 | } | |
88 | ||
89 | template<typename T> | |
90 | static inline T Min3 (const T a, const T b, const T c) | |
91 | { | |
92 | return Min2(Min2(a,b),c); | |
93 | } | |
94 | ||
95 | template<typename T> | |
96 | static inline T Max2 (const T a, const T b) | |
97 | { | |
98 | return (a>b)?a:b; | |
99 | } | |
100 | ||
101 | template<typename T> | |
102 | static inline T Max3 (const T a, const T b, const T c) | |
103 | { | |
104 | return Max2(Max2(a,b),c); | |
105 | } | |
106 | ||
107 | ||
108 | /////////////////////////////////////////////////////////////////////////////// | |
109 | // GPU Raster Macros | |
110 | ||
111 | // Convert 24bpp color parameter of GPU command to 16bpp (15bpp + mask bit) | |
112 | #define GPU_RGB16(rgb) ((((rgb)&0xF80000)>>9)|(((rgb)&0xF800)>>6)|(((rgb)&0xF8)>>3)) | |
113 | ||
114 | // Sign-extend 11-bit coordinate command param | |
115 | #define GPU_EXPANDSIGN(x) (((s32)(x)<<(32-11))>>(32-11)) | |
116 | ||
117 | // Max difference between any two X or Y primitive coordinates | |
118 | #define CHKMAX_X 1024 | |
119 | #define CHKMAX_Y 512 | |
120 | ||
121 | #define FRAME_BUFFER_SIZE (1024*512*2) | |
122 | #define FRAME_WIDTH 1024 | |
123 | #define FRAME_HEIGHT 512 | |
124 | #define FRAME_OFFSET(x,y) (((y)<<10)+(x)) | |
125 | #define FRAME_BYTE_STRIDE 2048 | |
126 | #define FRAME_BYTES_PER_PIXEL 2 | |
127 | ||
128 | static inline s32 GPU_DIV(s32 rs, s32 rt) | |
129 | { | |
130 | return rt ? (rs / rt) : (0); | |
131 | } | |
132 | ||
133 | // 'Unsafe' version of above that doesn't check for div-by-zero | |
134 | #define GPU_FAST_DIV(rs, rt) ((signed)(rs) / (signed)(rt)) | |
135 | ||
136 | struct gpu_unai_t { | |
137 | u32 GPU_GP1; | |
138 | GPUPacket PacketBuffer; | |
139 | u16 *vram; | |
140 | ||
43047988 JW |
141 | #ifdef USE_GPULIB |
142 | u16 *downscale_vram; | |
143 | #endif | |
030d1121 | 144 | //////////////////////////////////////////////////////////////////////////// |
145 | // Variables used only by older standalone version of gpu_unai (gpu.cpp) | |
146 | #ifndef USE_GPULIB | |
147 | u32 GPU_GP0; | |
148 | u32 tex_window; // Current texture window vals (set by GP0(E2h) cmd) | |
149 | s32 PacketCount; | |
150 | s32 PacketIndex; | |
151 | bool fb_dirty; // Framebuffer is dirty (according to GPU) | |
152 | ||
153 | // Display status | |
154 | // NOTE: Standalone older gpu_unai didn't care about horiz display range | |
155 | u16 DisplayArea[6]; // [0] : Start of display area (in VRAM) X | |
156 | // [1] : Start of display area (in VRAM) Y | |
157 | // [2] : Display mode resolution HORIZONTAL | |
158 | // [3] : Display mode resolution VERTICAL | |
159 | // [4] : Vertical display range (on TV) START | |
160 | // [5] : Vertical display range (on TV) END | |
161 | ||
162 | //////////////////////////////////////////////////////////////////////////// | |
163 | // Dma Transfers info | |
164 | struct { | |
165 | s32 px,py; | |
166 | s32 x_end,y_end; | |
167 | u16* pvram; | |
168 | u32 *last_dma; // Last dma pointer | |
169 | bool FrameToRead; // Load image in progress | |
170 | bool FrameToWrite; // Store image in progress | |
171 | } dma; | |
172 | ||
173 | //////////////////////////////////////////////////////////////////////////// | |
174 | // Frameskip | |
175 | struct { | |
176 | int skipCount; // Frame skip (0,1,2,3...) | |
177 | bool isSkip; // Skip frame (according to GPU) | |
178 | bool skipFrame; // Skip this frame (according to frame skip) | |
179 | bool wasSkip; // Skip frame old value (according to GPU) | |
180 | bool skipGPU; // Skip GPU primitives | |
181 | } frameskip; | |
182 | #endif | |
183 | // END of standalone gpu_unai variables | |
184 | //////////////////////////////////////////////////////////////////////////// | |
185 | ||
186 | u32 TextureWindowCur; // Current setting from last GP0(0xE2) cmd (raw form) | |
187 | u8 TextureWindow[4]; // [0] : Texture window offset X | |
188 | // [1] : Texture window offset Y | |
189 | // [2] : Texture window mask X | |
190 | // [3] : Texture window mask Y | |
191 | ||
192 | u16 DrawingArea[4]; // [0] : Drawing area top left X | |
193 | // [1] : Drawing area top left Y | |
194 | // [2] : Drawing area bottom right X | |
195 | // [3] : Drawing area bottom right Y | |
196 | ||
197 | s16 DrawingOffset[2]; // [0] : Drawing offset X (signed) | |
198 | // [1] : Drawing offset Y (signed) | |
199 | ||
200 | u16* TBA; // Ptr to current texture in VRAM | |
201 | u16* CBA; // Ptr to current CLUT in VRAM | |
202 | ||
203 | //////////////////////////////////////////////////////////////////////////// | |
204 | // Inner Loop parameters | |
205 | ||
206 | // 22.10 Fixed-pt texture coords, mask, scanline advance | |
207 | // NOTE: U,V are no longer packed together into one u32, this proved to be | |
208 | // too imprecise, leading to pixel dropouts. Example: NFS3's skybox. | |
209 | u32 u, v; | |
210 | u32 u_msk, v_msk; | |
211 | s32 u_inc, v_inc; | |
212 | ||
213 | // Color for Gouraud-shaded prims | |
214 | // Packed fixed-pt 8.3:8.3:8.2 rgb triplet | |
215 | // layout: rrrrrrrrXXXggggggggXXXbbbbbbbbXX | |
216 | // ^ bit 31 ^ bit 0 | |
217 | u32 gCol; | |
218 | u32 gInc; // Increment along scanline for gCol | |
219 | ||
220 | // Color for flat-shaded, texture-blended prims | |
221 | u8 r5, g5, b5; // 5-bit light for undithered prims | |
222 | u8 r8, g8, b8; // 8-bit light for dithered prims | |
223 | ||
224 | // Color for flat-shaded, untextured prims | |
225 | u16 PixelData; // bgr555 color for untextured flat-shaded polys | |
226 | ||
227 | // End of inner Loop parameters | |
228 | //////////////////////////////////////////////////////////////////////////// | |
229 | ||
230 | ||
231 | u8 blit_mask; // Determines what pixels to skip when rendering. | |
232 | // Only useful on low-resolution devices using | |
233 | // a simple pixel-dropping downscaler for PS1 | |
234 | // high-res modes. See 'pixel_skip' option. | |
235 | ||
236 | u8 ilace_mask; // Determines what lines to skip when rendering. | |
237 | // Normally 0 when PS1 240 vertical res is in | |
238 | // use and ilace_force is 0. When running in | |
239 | // PS1 480 vertical res on a low-resolution | |
240 | // device (320x240), will usually be set to 1 | |
241 | // so odd lines are not rendered. (Unless future | |
242 | // full-screen scaling option is in use ..TODO) | |
243 | ||
244 | bool prog_ilace_flag; // Tracks successive frames for 'prog_ilace' option | |
245 | ||
246 | u8 BLEND_MODE; | |
247 | u8 TEXT_MODE; | |
248 | u8 Masking; | |
249 | ||
250 | u16 PixelMSB; | |
251 | ||
252 | gpu_unai_config_t config; | |
253 | ||
254 | u8 LightLUT[32*32]; // 5-bit lighting LUT (gpu_inner_light.h) | |
255 | u32 DitherMatrix[64]; // Matrix of dither coefficients | |
256 | }; | |
257 | ||
258 | static gpu_unai_t gpu_unai; | |
259 | ||
260 | // Global config that frontend can alter.. Values are read in GPU_init(). | |
261 | // TODO: if frontend menu modifies a setting, add a function that can notify | |
262 | // GPU plugin to use new setting. | |
263 | gpu_unai_config_t gpu_unai_config_ext; | |
264 | ||
265 | /////////////////////////////////////////////////////////////////////////////// | |
266 | // Internal inline funcs to get option status: (Allows flexibility) | |
267 | static inline bool LightingEnabled() | |
268 | { | |
269 | return gpu_unai.config.lighting; | |
270 | } | |
271 | ||
272 | static inline bool FastLightingEnabled() | |
273 | { | |
274 | return gpu_unai.config.fast_lighting; | |
275 | } | |
276 | ||
277 | static inline bool BlendingEnabled() | |
278 | { | |
279 | return gpu_unai.config.blending; | |
280 | } | |
281 | ||
282 | static inline bool DitheringEnabled() | |
283 | { | |
284 | return gpu_unai.config.dithering; | |
285 | } | |
286 | ||
287 | // For now, this is just for development/experimentation purposes.. | |
288 | // If modified to return true, it will allow ignoring the status register | |
289 | // bit 9 setting (dither enable). It will still restrict dithering only | |
290 | // to Gouraud-shaded or texture-blended polys. | |
291 | static inline bool ForcedDitheringEnabled() | |
292 | { | |
293 | return false; | |
294 | } | |
295 | ||
296 | static inline bool ProgressiveInterlaceEnabled() | |
297 | { | |
298 | #ifdef USE_GPULIB | |
299 | // Using this old option greatly decreases quality of image. Disabled | |
300 | // for now when using new gpulib, since it also adds more work in loops. | |
301 | return false; | |
302 | #else | |
303 | return gpu_unai.config.prog_ilace; | |
304 | #endif | |
305 | } | |
306 | ||
307 | // For now, 320x240 output resolution is assumed, using simple line-skipping | |
308 | // and pixel-skipping downscaler. | |
309 | // TODO: Flesh these out so they return useful values based on whether | |
310 | // running on higher-res device or a resampling downscaler is enabled. | |
311 | static inline bool PixelSkipEnabled() | |
312 | { | |
43047988 | 313 | return gpu_unai.config.pixel_skip || gpu_unai.config.scale_hires; |
030d1121 | 314 | } |
315 | ||
316 | static inline bool LineSkipEnabled() | |
317 | { | |
318 | return true; | |
319 | } | |
320 | ||
321 | #endif // GPU_UNAI_H |