src/renderman.c

   1 /*
   2   Copyright 2010, Volca
   3   Licenced under Academic Free License version 3.0
   4   Review OpenUsbLd README & LICENSE files for further details.
   5 */
   6
   7 #include <stdio.h>
   8 #include <kernel.h>
   9
  10 #include "include/renderman.h"
  11 #include "include/ioman.h"
  12 #include "include/usbld.h"
  13
  14 // Allocateable space in vram, as indicated in GsKit's code
  15 #define __VRAM_SIZE 4194304
  16
  17 GSGLOBAL *gsGlobal;
  18 s32 guiThreadID;
  19
  20 /** Helper texture list */
  21 struct rm_texture_list_t {
  22         GSTEXTURE *txt;
  23         GSCLUT *clut;
  24         struct rm_texture_list_t *next;
  25 };
  26
  27 static struct rm_texture_list_t *uploadedTextures = NULL;
  28
  29 static int order;
  30 static int vsync = 1;
  31 static enum rm_vmode vmode = RM_VMODE_AUTO;
  32
  33 #define NUM_RM_VMODES 3
  34
  35 // RM Vmode -> GS Vmode conversion table
  36 static int rm_mode_table[NUM_RM_VMODES] = {
  37         -1,                                     // AUTO
  38         GS_MODE_PAL,            // PAL
  39         GS_MODE_NTSC            // NTSC
  40 };
  41
  42 static int rm_height_table[] = {
  43         -1,             // AUTO
  44         512,    // PAL
  45         448,    // NTSC
  46 };
  47
  48 static float aspectWidth;
  49 static float aspectHeight;
  50
  51 // Transposition values - all rendering can be transposed (moved on screen) by these
  52 static float transX = 0;
  53 static float transY = 0;
  54
  55 const u64 gColWhite = GS_SETREG_RGBA(0xFF,0xFF,0xFF,0x00);
  56 const u64 gColBlack = GS_SETREG_RGBA(0x00,0x00,0x00,0x00);
  57 const u64 gColDarker = GS_SETREG_RGBA(0x00,0x00,0x00,0x60);
  58 const u64 gColFocus = GS_SETREG_RGBA(0xFF,0xFF,0xFF,0x50);
  59
  60 const u64 gDefaultCol = GS_SETREG_RGBA(0x80,0x80,0x80,0x80);
  61 const u64 gDefaultAlpha = GS_SETREG_ALPHA(0,1,0,1,0);
  62
  63 static float shiftYVal;
  64 static float (*shiftY)(float posY);
  65
  66 static float shiftYFunc(float posY) {
  67         //return (int) ceil(shiftYVal * posY);
  68         return (int) (shiftYVal * posY);
  69 }
  70
  71 static float identityFunc(float posY) {
  72         return posY;
  73 }
  74
  75 static void rmAppendUploadedTextures(GSTEXTURE *txt) {
  76         struct rm_texture_list_t *entry = (struct rm_texture_list_t *)malloc(sizeof(struct rm_texture_list_t));
  77         entry->clut = NULL;
  78         entry->txt = txt;
  79         entry->next = uploadedTextures;
  80         uploadedTextures = entry;
  81 }
  82
  83 static void rmAppendUploadedCLUTs(GSCLUT *clut) {
  84         struct rm_texture_list_t *entry = (struct rm_texture_list_t *)malloc(sizeof(struct rm_texture_list_t));
  85         entry->txt  = NULL;
  86         entry->clut = clut;
  87         entry->next = uploadedTextures;
  88         uploadedTextures = entry;
  89 }
  90
  91 static int rmClutSize(GSCLUT *clut, u32 *size, u32 *w, u32 *h) {
  92         switch (clut->PSM) {
  93                 case GS_PSM_T4:
  94                         *w = 8;
  95                         *h = 2;
  96                         break;
  97                 case GS_PSM_T8:
  98                         *w = 16;
  99                         *h = 16;
 100                         break;
 101                 default:
 102                         return 0;
 103         };
 104
 105         switch(clut->ClutPSM) {
 106                 case GS_PSM_CT32:
 107                         *size = (*w) * (*h) * 4;
 108                         break;
 109                 case GS_PSM_CT24:
 110                         *size = (*w) * (*h) * 4;
 111                         break;
 112                 case GS_PSM_CT16:
 113                         *size = (*w) * (*h) * 2;
 114                         break;
 115                 case GS_PSM_CT16S:
 116                         *size = (*w) * (*h) * 2;
 117                         break;
 118                 default:
 119                         return 0;
 120         }
 121
 122         return 1;
 123 }
 124
 125 static int rmUploadClut(GSCLUT *clut) {
 126         if (clut->VramClut && clut->VramClut != GSKIT_ALLOC_ERROR) // already uploaded
 127                 return 1;
 128
 129         u32 size;
 130         u32 w, h;
 131
 132         if (!rmClutSize(clut, &size, &w, &h))
 133                 return 0;
 134
 135         size = (-GS_VRAM_BLOCKSIZE_256)&(size+GS_VRAM_BLOCKSIZE_256-1);
 136
 137         // too large to fit VRAM with the currently allocated space?
 138         if(gsGlobal->CurrentPointer + size >= __VRAM_SIZE)
 139         {
 140
 141                 if (size >= __VRAM_SIZE) {
 142                         // Only log this if the allocation is too large itself
 143                         LOG("RENDERMAN Requested clut allocation is bigger than VRAM!\n");
 144                         // We won't allocate this, it's too large
 145                         clut->VramClut = GSKIT_ALLOC_ERROR;
 146                         return 0;
 147                 }
 148
 149                 rmFlush();
 150         }
 151
 152         clut->VramClut = gsGlobal->CurrentPointer;
 153         gsGlobal->CurrentPointer += size;
 154
 155         rmAppendUploadedCLUTs(clut);
 156
 157         gsKit_texture_send(clut->Clut, w,  h, clut->VramClut, clut->ClutPSM, 1, GS_CLUT_PALLETE);
 158         return 1;
 159 }
 160
 161 static int rmUploadTexture(GSTEXTURE* txt) {
 162         // For clut based textures...
 163         if (txt->Clut) {
 164                 // upload CLUT first
 165                 if (!rmUploadClut((GSCLUT *)txt->Clut))
 166                         return 0;
 167
 168                 // copy the new VramClut
 169                 txt->VramClut = ((GSCLUT*)txt->Clut)->VramClut;
 170         }
 171
 172         u32 size = gsKit_texture_size(txt->Width, txt->Height, txt->PSM);
 173         // alignment of the allocation
 174         size = (-GS_VRAM_BLOCKSIZE_256)&(size+GS_VRAM_BLOCKSIZE_256-1);
 175
 176         // too large to fit VRAM with the currently allocated space?
 177         if(gsGlobal->CurrentPointer + size >= __VRAM_SIZE)
 178         {
 179
 180                 if (size >= __VRAM_SIZE) {
 181                         // Only log this if the allocation is too large itself
 182                         LOG("RENDERMAN Requested texture allocation is bigger than VRAM!\n");
 183                         // We won't allocate this, it's too large
 184                         txt->Vram = GSKIT_ALLOC_ERROR;
 185                         return 0;
 186                 }
 187
 188                 rmFlush();
 189
 190                 // Should not flush CLUT away. If this happenned we have to reupload
 191                 if (txt->Clut) {
 192                         if (!rmUploadClut((GSCLUT *)txt->Clut))
 193                                 return 0;
 194
 195                         txt->VramClut = ((GSCLUT*)txt->Clut)->VramClut;
 196                 }
 197
 198                 // only could fit CLUT but not the pixmap with it!
 199                 if(gsGlobal->CurrentPointer + size >= __VRAM_SIZE)
 200                         return 0;
 201         }
 202
 203         txt->Vram = gsGlobal->CurrentPointer;
 204         gsGlobal->CurrentPointer += size;
 205
 206         rmAppendUploadedTextures(txt);
 207
 208         // We can't do gsKit_texture_upload since it'd assume txt->Clut is the CLUT table directly
 209         // whereas we're using it as a pointer to our structure containg clut data
 210         gsKit_setup_tbw(txt);
 211         gsKit_texture_send(txt->Mem, txt->Width, txt->Height, txt->Vram, txt->PSM, txt->TBW, txt->Clut ? GS_CLUT_TEXTURE : GS_CLUT_NONE);
 212
 213         return 1;
 214 }
 215
 216 int rmPrepareTexture(GSTEXTURE* txt) {
 217         if (txt->Vram && txt->Vram != GSKIT_ALLOC_ERROR) // already uploaded
 218                 return 1;
 219
 220         return rmUploadTexture(txt);
 221 }
 222
 223 void rmDispatch(void) {
 224         gsKit_queue_exec(gsGlobal);
 225 }
 226
 227
 228 void rmFlush(void) {
 229         rmDispatch();
 230
 231         // release all the uploaded textures
 232         gsKit_vram_clear(gsGlobal);
 233
 234         while (uploadedTextures) {
 235                 // free clut and txt if those are filled in
 236                 if (uploadedTextures->txt) {
 237                         uploadedTextures->txt->Vram = 0;
 238                         uploadedTextures->txt->VramClut = 0;
 239                 }
 240
 241                 if (uploadedTextures->clut)
 242                         uploadedTextures->clut->VramClut = 0;
 243
 244                 struct rm_texture_list_t *entry = uploadedTextures;
 245                 uploadedTextures = uploadedTextures->next;
 246                 free(entry);
 247         }
 248 }
 249
 250 void rmStartFrame(void) {
 251         order = 0;
 252 }
 253
 254 void rmEndFrame(void) {
 255         gsKit_set_finish(gsGlobal);
 256
 257         rmFlush();
 258
 259         // Wait for draw ops to finish
 260         gsKit_finish();
 261
 262         if(!gsGlobal->FirstFrame)
 263         {
 264                 if (vsync)
 265                         SleepThread();
 266
 267                 if(gsGlobal->DoubleBuffering == GS_SETTING_ON)
 268                 {
 269                         GS_SET_DISPFB2( gsGlobal->ScreenBuffer[gsGlobal->ActiveBuffer & 1] / 8192,
 270                                 gsGlobal->Width / 64, gsGlobal->PSM, 0, 0 );
 271
 272                         gsGlobal->ActiveBuffer ^= 1;
 273                         gsGlobal->PrimContext ^= 1;
 274                 }
 275
 276         }
 277
 278         gsKit_setactive(gsGlobal);
 279 }
 280
 281 static int rmOnVSync(void) {
 282         if (vsync)
 283                 iWakeupThread(guiThreadID);
 284
 285         return 0;
 286 }
 287
 288 void rmInit() {
 289         gsGlobal = gsKit_init_global();
 290
 291         rm_mode_table[RM_VMODE_AUTO] = gsGlobal->Mode;
 292         rm_height_table[RM_VMODE_AUTO] = gsGlobal->Height;
 293
 294         dmaKit_init(D_CTRL_RELE_OFF, D_CTRL_MFD_OFF, D_CTRL_STS_UNSPEC,
 295                                 D_CTRL_STD_OFF, D_CTRL_RCYC_8, 1 << DMA_CHANNEL_GIF);
 296
 297         // Initialize the DMAC
 298         dmaKit_chan_init(DMA_CHANNEL_GIF);
 299         dmaKit_chan_init(DMA_CHANNEL_FROMSPR);
 300         dmaKit_chan_init(DMA_CHANNEL_TOSPR);
 301
 302         rmSetMode(1);
 303
 304         order = 0;
 305
 306         aspectWidth = 1.0f;
 307         aspectHeight = 1.0f;
 308
 309         shiftYVal = 1.0f;
 310         shiftY = &shiftYFunc;
 311
 312         transX = 0.0f;
 313         transY = 0.0f;
 314
 315         guiThreadID = GetThreadId();
 316         gsKit_add_vsync_handler(&rmOnVSync);
 317 }
 318
 319 int rmSetMode(int force) {
 320         if (gVMode < RM_VMODE_AUTO || gVMode >= NUM_RM_VMODES)
 321                 gVMode = RM_VMODE_AUTO;
 322
 323         // we don't want to set the vmode without a reason...
 324         int changed = (vmode != gVMode || vsync != gVSync || force);
 325         if (changed) {
 326                 vmode = gVMode;
 327                 vsync = gVSync;
 328
 329                 gsGlobal->Mode = rm_mode_table[vmode];
 330                 gsGlobal->Height = rm_height_table[vmode];
 331
 332                 gsGlobal->PSM = GS_PSM_CT24;
 333                 gsGlobal->PSMZ = GS_PSMZ_16S;
 334                 gsGlobal->ZBuffering = GS_SETTING_OFF;
 335                 gsGlobal->PrimAlphaEnable = GS_SETTING_ON;
 336                 gsGlobal->DoubleBuffering = GS_SETTING_ON;
 337
 338                 gsKit_init_screen(gsGlobal);
 339
 340                 gsKit_mode_switch(gsGlobal, GS_ONESHOT);
 341
 342                 gsKit_set_test(gsGlobal, GS_ZTEST_OFF);
 343
 344                 // reset the contents of the screen to avoid garbage being displayed
 345                 gsKit_clear(gsGlobal, gColBlack);
 346                 gsKit_sync_flip(gsGlobal);
 347
 348                 LOG("RENDERMAN New vmode: %d, %d x %d\n", vmode, gsGlobal->Width, gsGlobal->Height);
 349         }
 350         return changed;
 351 }
 352
 353 void rmGetScreenExtents(int *w, int *h) {
 354         *w = gsGlobal->Width;
 355         *h = gsGlobal->Height;
 356 }
 357
 358 void rmEnd(void) {
 359         rmFlush();
 360 }
 361
 362 /** If txt is null, don't use DIM_UNDEF size */
 363 void rmSetupQuad(GSTEXTURE* txt, int x, int y, short aligned, int w, int h, short scaled, u64 color, rm_quad_t* q) {
 364         if (aligned) {
 365                 float dim;
 366                 if (w == DIM_UNDEF)
 367                         w = txt->Width;
 368                 if (h == DIM_UNDEF)
 369                         h = txt->Height;
 370
 371                 if (scaled)
 372                         dim = aspectWidth * (w >> 1);
 373                 else
 374                         dim = w >> 1;
 375                 q->ul.x = x - dim;
 376                 q->br.x = x + dim;
 377
 378                 if (scaled)
 379                         dim = aspectHeight * (h >> 1);
 380                 else
 381                         dim = h >> 1;
 382                 q->ul.y = shiftY(y) - dim;
 383                 q->br.y = shiftY(y) + dim;
 384         } else {
 385                 if (w == DIM_UNDEF)
 386                         w = txt->Width;
 387                 if (h == DIM_UNDEF)
 388                         h = txt->Height;
 389
 390                 q->ul.x = x;
 391                 if (scaled)
 392                         q->br.x = x + aspectWidth * w;
 393                 else
 394                         q->br.x = x + w;
 395
 396                 q->ul.y = shiftY(y);
 397                 if (scaled)
 398                         q->br.y = shiftY(y) + aspectHeight * h;
 399                 else
 400                         q->br.y = shiftY(y) + h;
 401         }
 402
 403         q->color = color;
 404
 405         if (txt) {
 406                 q->txt = txt;
 407                 q->ul.u = 0;
 408                 q->ul.v = 0;
 409                 q->br.u = txt->Width;
 410                 q->br.v = txt->Height;
 411         }
 412 }
 413
 414 void rmDrawQuad(rm_quad_t* q) { // NO scaling, NO shift, NO alignment
 415         if (!rmPrepareTexture(q->txt)) // won't render if not ready!
 416                 return;
 417
 418         if ((q->txt->PSM == GS_PSM_CT32) || (q->txt->Clut && q->txt->ClutPSM == GS_PSM_CT32))
 419         {
 420                 gsKit_set_primalpha(gsGlobal, gDefaultAlpha, 0);
 421         }
 422
 423         gsKit_prim_sprite_texture(gsGlobal,     q->txt,
 424                         q->ul.x + transX, q->ul.y + transY,
 425                         q->ul.u, q->ul.v,
 426                         q->br.x + transX, q->br.y + transY,
 427                         q->br.u, q->br.v, order, q->color);
 428         order++;
 429
 430         gsKit_set_primalpha(gsGlobal, GS_BLEND_BACK2FRONT, 0);
 431 }
 432
 433 void rmDrawPixmap(GSTEXTURE* txt, int x, int y, short aligned, int w, int h, short scaled, u64 color) {
 434         rm_quad_t quad;
 435         rmSetupQuad(txt, x, y, aligned, w, h, scaled, color, &quad);
 436         rmDrawQuad(&quad);
 437 }
 438
 439 void rmDrawOverlayPixmap(GSTEXTURE* overlay, int x, int y, short aligned, int w, int h, short scaled, u64 color,
 440                 GSTEXTURE* inlay, int ulx, int uly, int urx, int ury, int blx, int bly, int brx, int bry) {
 441
 442         rm_quad_t quad;
 443         rmSetupQuad(overlay, x, y, aligned, w, h, scaled, color, &quad);
 444
 445         if (!rmPrepareTexture(inlay))
 446                 return;
 447
 448         if (inlay->PSM == GS_PSM_CT32)
 449                 gsKit_set_primalpha(gsGlobal, gDefaultAlpha, 0);
 450
 451         gsKit_prim_quad_texture(gsGlobal, inlay, quad.ul.x + transX + aspectWidth * ulx, quad.ul.y + transY + uly, 0, 0,
 452                         quad.ul.x + transX + aspectWidth * urx, quad.ul.y + transY + ury, inlay->Width, 0,
 453                         quad.ul.x + transX + aspectWidth * blx, quad.ul.y + transY + bly, 0, inlay->Height,
 454                         quad.ul.x + transX + aspectWidth * brx, quad.ul.y + transY + bry, inlay->Width, inlay->Height, order, gDefaultCol);
 455         order++;
 456         gsKit_set_primalpha(gsGlobal, GS_BLEND_BACK2FRONT, 0);
 457
 458         rmDrawQuad(&quad);
 459 }
 460
 461 void rmDrawRect(int x, int y, int w, int h, u64 color) {
 462         gsKit_set_primalpha(gsGlobal, GS_SETREG_ALPHA(0,1,0,1,0), 0);
 463         gsKit_prim_quad(gsGlobal, x + transX, shiftY(y) + transY, x + w + transX, shiftY(y) + transY, x + transX, shiftY(y) + h + transY, x + w + transX, shiftY(y) + h + transY, order, color);
 464         order++;
 465         gsKit_set_primalpha(gsGlobal, GS_BLEND_BACK2FRONT, 0);
 466 }
 467
 468 void rmDrawLine(int x, int y, int x1, int y1, u64 color) {
 469         gsKit_prim_line(gsGlobal, x + transX, shiftY(y) + transY, x1 + transX, shiftY(y1) + transY, order, color);
 470 }
 471
 472 void rmSetAspectRatio(float width, float height) {
 473         aspectWidth = width;
 474         aspectHeight = height;
 475 }
 476
 477 void rmResetAspectRatio() {
 478         aspectWidth = 1.0f;
 479         aspectHeight = 1.0f;
 480 }
 481
 482 void rmGetAspectRatio(float *w, float *h) {
 483         *w = aspectWidth;
 484         *h = aspectHeight;
 485 }
 486
 487 void rmApplyAspectRatio(int* w, int* h) {
 488         *w = *w * aspectWidth;
 489         *h = *h * aspectHeight;
 490 }
 491
 492 void rmSetShiftRatio(float shiftYRatio) {
 493         shiftYVal = shiftYRatio;
 494         shiftY = &shiftYFunc;
 495 }
 496
 497 void rmResetShiftRatio() {
 498         shiftY = &identityFunc;
 499 }
 500
 501 void rmApplyShiftRatio(int* y) {
 502         *y = shiftY(*y);
 503 }
 504
 505 void rmSetTransposition(float x, float y) {
 506         transX = x;
 507         transY = y;
 508 }