1 /************************************************************************** 2 * 3 * Copyright 2009 VMware, Inc. All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial portions 15 * of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 **************************************************************************/ 26 27 #include "paint.h" 28 29 #include "matrix.h" 30 #include "image.h" 31 32 #include "pipe/p_compiler.h" 33 #include "util/u_inlines.h" 34 35 #include "util/u_memory.h" 36 #include "util/u_math.h" 37 #include "util/u_sampler.h" 38 39 #include "cso_cache/cso_context.h" 40 41 struct vg_paint { 42 struct vg_object base; 43 44 VGPaintType type; 45 46 struct { 47 VGfloat color[4]; 48 VGint colori[4]; 49 } solid; 50 51 struct { 52 VGColorRampSpreadMode spread; 53 VGuint color_data[1024]; 54 struct { 55 VGfloat coords[4]; 56 VGint coordsi[4]; 57 } linear; 58 struct { 59 VGfloat vals[5]; 60 VGint valsi[5]; 61 } radial; 62 struct pipe_sampler_view *sampler_view; 63 struct pipe_sampler_state sampler; 64 65 VGfloat *ramp_stops; 66 VGint *ramp_stopsi; 67 VGint num_stops; 68 69 VGboolean color_ramps_premultiplied; 70 } gradient; 71 72 struct { 73 struct pipe_sampler_view *sampler_view; 74 VGTilingMode tiling_mode; 75 struct pipe_sampler_state sampler; 76 } pattern; 77 78 /* XXX next 3 all unneded? */ 79 struct pipe_resource *cbuf; 80 struct pipe_shader_state fs_state; 81 void *fs; 82 }; 83 84 static INLINE VGuint mix_pixels(VGuint p1, VGuint a, VGuint p2, VGuint b) 85 { 86 VGuint t = (p1 & 0xff00ff) * a + (p2 & 0xff00ff) * b; 87 t >>= 8; t &= 0xff00ff; 88 89 p1 = ((p1 >> 8) & 0xff00ff) * a + ((p2 >> 8) & 0xff00ff) * b; 90 p1 &= 0xff00ff00; p1 |= t; 91 92 return p1; 93 } 94 95 static INLINE VGuint float4_to_argb(const VGfloat *clr) 96 { 97 return float_to_ubyte(clr[3]) << 24 | 98 float_to_ubyte(clr[0]) << 16 | 99 float_to_ubyte(clr[1]) << 8 | 100 float_to_ubyte(clr[2]) << 0; 101 } 102 103 static INLINE void create_gradient_data(const VGfloat *ramp_stops, 104 VGint num, 105 VGuint *data, 106 VGint size) 107 { 108 VGint i; 109 VGint pos = 0; 110 VGfloat fpos = 0, incr = 1.f / size; 111 VGuint last_color; 112 113 while (fpos < ramp_stops[0]) { 114 data[pos] = float4_to_argb(ramp_stops + 1); 115 fpos += incr; 116 ++pos; 117 } 118 119 for (i = 0; i < num - 1; ++i) { 120 VGint rcur = 5 * i; 121 VGint rnext = 5 * (i + 1); 122 VGfloat delta = 1.f/(ramp_stops[rnext] - ramp_stops[rcur]); 123 while (fpos < ramp_stops[rnext] && pos < size) { 124 VGint dist = 256 * ((fpos - ramp_stops[rcur]) * delta); 125 VGint idist = 256 - dist; 126 VGuint current_color = float4_to_argb(ramp_stops + rcur + 1); 127 VGuint next_color = float4_to_argb(ramp_stops + rnext + 1); 128 data[pos] = mix_pixels(current_color, idist, 129 next_color, dist); 130 fpos += incr; 131 ++pos; 132 } 133 } 134 135 last_color = float4_to_argb(ramp_stops + ((num - 1) * 5 + 1)); 136 while (pos < size) { 137 data[pos] = last_color; 138 ++pos; 139 } 140 data[size-1] = last_color; 141 } 142 143 static INLINE struct pipe_resource *create_gradient_texture(struct vg_paint *p) 144 { 145 struct pipe_context *pipe = p->base.ctx->pipe; 146 struct pipe_screen *screen = pipe->screen; 147 struct pipe_resource *tex = 0; 148 struct pipe_resource templ; 149 150 memset(&templ, 0, sizeof(templ)); 151 templ.target = PIPE_TEXTURE_1D; 152 templ.format = PIPE_FORMAT_B8G8R8A8_UNORM; 153 templ.last_level = 0; 154 templ.width0 = 1024; 155 templ.height0 = 1; 156 templ.depth0 = 1; 157 templ.array_size = 1; 158 templ.bind = PIPE_BIND_SAMPLER_VIEW; 159 160 tex = screen->resource_create(screen, &templ); 161 162 { /* upload color_data */ 163 struct pipe_transfer *transfer = 164 pipe_get_transfer(p->base.ctx->pipe, tex, 0, 0, 165 PIPE_TRANSFER_WRITE, 0, 0, 1024, 1); 166 void *map = pipe->transfer_map(pipe, transfer); 167 memcpy(map, p->gradient.color_data, sizeof(VGint)*1024); 168 pipe->transfer_unmap(pipe, transfer); 169 pipe->transfer_destroy(pipe, transfer); 170 } 171 172 return tex; 173 } 174 175 static INLINE struct pipe_sampler_view *create_gradient_sampler_view(struct vg_paint *p) 176 { 177 struct pipe_context *pipe = p->base.ctx->pipe; 178 struct pipe_resource *texture; 179 struct pipe_sampler_view view_templ; 180 struct pipe_sampler_view *view; 181 182 texture = create_gradient_texture(p); 183 184 if (!texture) 185 return NULL; 186 187 u_sampler_view_default_template(&view_templ, texture, texture->format); 188 view = pipe->create_sampler_view(pipe, texture, &view_templ); 189 /* want the texture to go away if the view is freed */ 190 pipe_resource_reference(&texture, NULL); 191 192 return view; 193 } 194 195 struct vg_paint * paint_create(struct vg_context *ctx) 196 { 197 struct vg_paint *paint = CALLOC_STRUCT(vg_paint); 198 const VGfloat default_color[] = {0.0f, 0.0f, 0.0f, 1.0f}; 199 const VGfloat def_ling[] = {0.0f, 0.0f, 1.0f, 0.0f}; 200 const VGfloat def_radg[] = {0.0f, 0.0f, 0.0f, 0.0f, 1.0f}; 201 vg_init_object(&paint->base, ctx, VG_OBJECT_PAINT); 202 vg_context_add_object(ctx, &paint->base); 203 204 paint->type = VG_PAINT_TYPE_COLOR; 205 memcpy(paint->solid.color, default_color, 206 4 * sizeof(VGfloat)); 207 paint->gradient.spread = VG_COLOR_RAMP_SPREAD_PAD; 208 memcpy(paint->gradient.linear.coords, def_ling, 209 4 * sizeof(VGfloat)); 210 memcpy(paint->gradient.radial.vals, def_radg, 211 5 * sizeof(VGfloat)); 212 213 paint->gradient.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 214 paint->gradient.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 215 paint->gradient.sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST; 216 paint->gradient.sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST; 217 paint->gradient.sampler.normalized_coords = 1; 218 219 memcpy(&paint->pattern.sampler, 220 &paint->gradient.sampler, 221 sizeof(struct pipe_sampler_state)); 222 223 return paint; 224 } 225 226 void paint_destroy(struct vg_paint *paint) 227 { 228 struct vg_context *ctx = paint->base.ctx; 229 pipe_sampler_view_reference(&paint->gradient.sampler_view, NULL); 230 if (paint->pattern.sampler_view) 231 pipe_sampler_view_reference(&paint->pattern.sampler_view, NULL); 232 if (ctx) 233 vg_context_remove_object(ctx, &paint->base); 234 235 free(paint->gradient.ramp_stopsi); 236 free(paint->gradient.ramp_stops); 237 FREE(paint); 238 } 239 240 void paint_set_color(struct vg_paint *paint, 241 const VGfloat *color) 242 { 243 paint->solid.color[0] = color[0]; 244 paint->solid.color[1] = color[1]; 245 paint->solid.color[2] = color[2]; 246 paint->solid.color[3] = color[3]; 247 248 paint->solid.colori[0] = FLT_TO_INT(color[0]); 249 paint->solid.colori[1] = FLT_TO_INT(color[1]); 250 paint->solid.colori[2] = FLT_TO_INT(color[2]); 251 paint->solid.colori[3] = FLT_TO_INT(color[3]); 252 } 253 254 static INLINE void paint_color_buffer(struct vg_paint *paint, void *buffer) 255 { 256 VGfloat *map = (VGfloat*)buffer; 257 memcpy(buffer, paint->solid.color, 4 * sizeof(VGfloat)); 258 map[4] = 0.f; 259 map[5] = 1.f; 260 map[6] = 2.f; 261 map[7] = 4.f; 262 } 263 264 static INLINE void paint_linear_gradient_buffer(struct vg_paint *paint, 265 const struct matrix *inv, 266 void *buffer) 267 { 268 VGfloat *map = (VGfloat*)buffer; 269 VGfloat dd; 270 271 map[0] = paint->gradient.linear.coords[2] - paint->gradient.linear.coords[0]; 272 map[1] = paint->gradient.linear.coords[3] - paint->gradient.linear.coords[1]; 273 dd = (map[0] * map[0] + map[1] * map[1]); 274 275 map[2] = (dd > 0.0f) ? 1.f / dd : 0.f; 276 map[3] = 1.f; 277 278 map[4] = 0.f; 279 map[5] = 1.f; 280 map[6] = 2.f; 281 map[7] = 4.f; 282 { 283 struct matrix mat; 284 matrix_load_identity(&mat); 285 /* VEGA_LINEAR_GRADIENT_SHADER expects the first point to be at (0, 0) */ 286 matrix_translate(&mat, -paint->gradient.linear.coords[0], -paint->gradient.linear.coords[1]); 287 matrix_mult(&mat, inv); 288 289 map[8] = mat.m[0]; map[9] = mat.m[3]; map[10] = mat.m[6]; map[11] = 0.f; 290 map[12] = mat.m[1]; map[13] = mat.m[4]; map[14] = mat.m[7]; map[15] = 0.f; 291 map[16] = mat.m[2]; map[17] = mat.m[5]; map[18] = mat.m[8]; map[19] = 0.f; 292 } 293 #if 0 294 debug_printf("Coords (%f, %f, %f, %f)\n", 295 map[0], map[1], map[2], map[3]); 296 #endif 297 } 298 299 300 static INLINE void paint_radial_gradient_buffer(struct vg_paint *paint, 301 const struct matrix *inv, 302 void *buffer) 303 { 304 const VGfloat *center = &paint->gradient.radial.vals[0]; 305 const VGfloat *focal = &paint->gradient.radial.vals[2]; 306 VGfloat rr = paint->gradient.radial.vals[4]; 307 VGfloat *map = (VGfloat*)buffer; 308 VGfloat dd, new_focal[2]; 309 310 rr *= rr; 311 312 map[0] = center[0] - focal[0]; 313 map[1] = center[1] - focal[1]; 314 dd = map[0] * map[0] + map[1] * map[1]; 315 316 /* focal point must lie inside the circle */ 317 if (0.998f * rr < dd) { 318 VGfloat scale; 319 320 scale = (dd > 0.0f) ? sqrt(0.998f * rr / dd) : 0.0f; 321 map[0] *= scale; 322 map[1] *= scale; 323 324 new_focal[0] = center[0] - map[0]; 325 new_focal[1] = center[1] - map[1]; 326 dd = map[0] * map[0] + map[1] * map[1]; 327 focal = new_focal; 328 } 329 330 map[2] = (rr > dd) ? rr - dd : 1.0f; 331 map[3] = 1.f; 332 333 map[4] = 0.f; 334 map[5] = 1.f; 335 map[6] = 2.f; 336 map[7] = 4.f; 337 338 { 339 struct matrix mat; 340 matrix_load_identity(&mat); 341 matrix_translate(&mat, -focal[0], -focal[1]); 342 matrix_mult(&mat, inv); 343 344 map[8] = mat.m[0]; map[9] = mat.m[3]; map[10] = mat.m[6]; map[11] = 0.f; 345 map[12] = mat.m[1]; map[13] = mat.m[4]; map[14] = mat.m[7]; map[15] = 0.f; 346 map[16] = mat.m[2]; map[17] = mat.m[5]; map[18] = mat.m[8]; map[19] = 0.f; 347 } 348 349 #if 0 350 debug_printf("Coords (%f, %f, %f, %f)\n", 351 map[0], map[1], map[2], map[3]); 352 #endif 353 } 354 355 356 static INLINE void paint_pattern_buffer(struct vg_paint *paint, 357 const struct matrix *inv, 358 void *buffer) 359 { 360 VGfloat *map = (VGfloat *)buffer; 361 memcpy(map, paint->solid.color, 4 * sizeof(VGfloat)); 362 363 map[4] = 0.f; 364 map[5] = 1.f; 365 map[6] = paint->pattern.sampler_view->texture->width0; 366 map[7] = paint->pattern.sampler_view->texture->height0; 367 { 368 struct matrix mat; 369 370 memcpy(&mat, inv, sizeof(*inv)); 371 372 map[8] = mat.m[0]; map[9] = mat.m[3]; map[10] = mat.m[6]; map[11] = 0.f; 373 map[12] = mat.m[1]; map[13] = mat.m[4]; map[14] = mat.m[7]; map[15] = 0.f; 374 map[16] = mat.m[2]; map[17] = mat.m[5]; map[18] = mat.m[8]; map[19] = 0.f; 375 } 376 } 377 378 void paint_set_type(struct vg_paint *paint, VGPaintType type) 379 { 380 paint->type = type; 381 } 382 383 void paint_set_ramp_stops(struct vg_paint *paint, const VGfloat *stops, 384 int num) 385 { 386 const VGfloat default_stops[] = {0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 387 1.0f, 1.0f, 1.0f, 1.0f, 1.0f}; 388 VGint i; 389 const VGint num_stops = num / 5; 390 VGfloat last_coord; 391 392 paint->gradient.num_stops = num; 393 if (num) { 394 free(paint->gradient.ramp_stops); 395 paint->gradient.ramp_stops = malloc(sizeof(VGfloat)*num); 396 memcpy(paint->gradient.ramp_stops, stops, sizeof(VGfloat)*num); 397 } else 398 return; 399 400 /* stops must be in increasing order. the last stop is 1.0. if the 401 * first one is bigger than 1 then the whole sequence is invalid*/ 402 if (stops[0] > 1) { 403 stops = default_stops; 404 num = 10; 405 } 406 last_coord = stops[0]; 407 for (i = 1; i < num_stops; ++i) { 408 VGint idx = 5 * i; 409 VGfloat coord = stops[idx]; 410 if (!floatsEqual(last_coord, coord) && coord < last_coord) { 411 stops = default_stops; 412 num = 10; 413 break; 414 } 415 last_coord = coord; 416 } 417 418 create_gradient_data(stops, num / 5, paint->gradient.color_data, 419 1024); 420 421 if (paint->gradient.sampler_view) { 422 pipe_sampler_view_reference(&paint->gradient.sampler_view, NULL); 423 paint->gradient.sampler_view = NULL; 424 } 425 426 paint->gradient.sampler_view = create_gradient_sampler_view(paint); 427 } 428 429 void paint_set_colori(struct vg_paint *p, 430 VGuint rgba) 431 { 432 p->solid.color[0] = ((rgba >> 24) & 0xff) / 255.f; 433 p->solid.color[1] = ((rgba >> 16) & 0xff) / 255.f; 434 p->solid.color[2] = ((rgba >> 8) & 0xff) / 255.f; 435 p->solid.color[3] = ((rgba >> 0) & 0xff) / 255.f; 436 } 437 438 VGuint paint_colori(struct vg_paint *p) 439 { 440 #define F2B(f) (float_to_ubyte(f)) 441 442 return ((F2B(p->solid.color[0]) << 24) | 443 (F2B(p->solid.color[1]) << 16) | 444 (F2B(p->solid.color[2]) << 8) | 445 (F2B(p->solid.color[3]) << 0)); 446 #undef F2B 447 } 448 449 void paint_set_linear_gradient(struct vg_paint *paint, 450 const VGfloat *coords) 451 { 452 memcpy(paint->gradient.linear.coords, coords, sizeof(VGfloat) * 4); 453 } 454 455 void paint_set_spread_mode(struct vg_paint *paint, 456 VGint mode) 457 { 458 paint->gradient.spread = mode; 459 switch(mode) { 460 case VG_COLOR_RAMP_SPREAD_PAD: 461 paint->gradient.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 462 break; 463 case VG_COLOR_RAMP_SPREAD_REPEAT: 464 paint->gradient.sampler.wrap_s = PIPE_TEX_WRAP_REPEAT; 465 break; 466 case VG_COLOR_RAMP_SPREAD_REFLECT: 467 paint->gradient.sampler.wrap_s = PIPE_TEX_WRAP_MIRROR_REPEAT; 468 break; 469 } 470 } 471 472 VGColorRampSpreadMode paint_spread_mode(struct vg_paint *paint) 473 { 474 return paint->gradient.spread; 475 } 476 477 void paint_set_radial_gradient(struct vg_paint *paint, 478 const VGfloat *values) 479 { 480 memcpy(paint->gradient.radial.vals, values, sizeof(VGfloat) * 5); 481 } 482 483 void paint_set_pattern(struct vg_paint *paint, 484 struct vg_image *img) 485 { 486 if (paint->pattern.sampler_view) 487 pipe_sampler_view_reference(&paint->pattern.sampler_view, NULL); 488 489 paint->pattern.sampler_view = NULL; 490 pipe_sampler_view_reference(&paint->pattern.sampler_view, 491 img->sampler_view); 492 } 493 494 void paint_set_pattern_tiling(struct vg_paint *paint, 495 VGTilingMode mode) 496 { 497 paint->pattern.tiling_mode = mode; 498 499 switch(mode) { 500 case VG_TILE_FILL: 501 paint->pattern.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_BORDER; 502 paint->pattern.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_BORDER; 503 break; 504 case VG_TILE_PAD: 505 paint->pattern.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 506 paint->pattern.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 507 break; 508 case VG_TILE_REPEAT: 509 paint->pattern.sampler.wrap_s = PIPE_TEX_WRAP_REPEAT; 510 paint->pattern.sampler.wrap_t = PIPE_TEX_WRAP_REPEAT; 511 break; 512 case VG_TILE_REFLECT: 513 paint->pattern.sampler.wrap_s = PIPE_TEX_WRAP_MIRROR_REPEAT; 514 paint->pattern.sampler.wrap_t = PIPE_TEX_WRAP_MIRROR_REPEAT; 515 break; 516 default: 517 debug_assert("!Unknown tiling mode"); 518 } 519 } 520 521 void paint_get_color(struct vg_paint *paint, 522 VGfloat *color) 523 { 524 color[0] = paint->solid.color[0]; 525 color[1] = paint->solid.color[1]; 526 color[2] = paint->solid.color[2]; 527 color[3] = paint->solid.color[3]; 528 } 529 530 void paint_ramp_stops(struct vg_paint *paint, VGfloat *stops, 531 int num) 532 { 533 memcpy(stops, paint->gradient.ramp_stops, sizeof(VGfloat)*num); 534 } 535 536 void paint_linear_gradient(struct vg_paint *paint, 537 VGfloat *coords) 538 { 539 memcpy(coords, paint->gradient.linear.coords, sizeof(VGfloat)*4); 540 } 541 542 void paint_radial_gradient(struct vg_paint *paint, 543 VGfloat *coords) 544 { 545 memcpy(coords, paint->gradient.radial.vals, sizeof(VGfloat)*5); 546 } 547 548 int paint_num_ramp_stops(struct vg_paint *paint) 549 { 550 return paint->gradient.num_stops; 551 } 552 553 VGPaintType paint_type(struct vg_paint *paint) 554 { 555 return paint->type; 556 } 557 558 void paint_set_coloriv(struct vg_paint *paint, 559 const VGint *color) 560 { 561 paint->solid.color[0] = color[0]; 562 paint->solid.color[1] = color[1]; 563 paint->solid.color[2] = color[2]; 564 paint->solid.color[3] = color[3]; 565 566 paint->solid.colori[0] = color[0]; 567 paint->solid.colori[1] = color[1]; 568 paint->solid.colori[2] = color[2]; 569 paint->solid.colori[3] = color[3]; 570 } 571 572 void paint_get_coloriv(struct vg_paint *paint, 573 VGint *color) 574 { 575 color[0] = paint->solid.colori[0]; 576 color[1] = paint->solid.colori[1]; 577 color[2] = paint->solid.colori[2]; 578 color[3] = paint->solid.colori[3]; 579 } 580 581 void paint_set_color_ramp_premultiplied(struct vg_paint *paint, 582 VGboolean set) 583 { 584 paint->gradient.color_ramps_premultiplied = set; 585 } 586 587 VGboolean paint_color_ramp_premultiplied(struct vg_paint *paint) 588 { 589 return paint->gradient.color_ramps_premultiplied; 590 } 591 592 void paint_set_ramp_stopsi(struct vg_paint *paint, const VGint *stops, 593 int num) 594 { 595 if (num) { 596 free(paint->gradient.ramp_stopsi); 597 paint->gradient.ramp_stopsi = malloc(sizeof(VGint)*num); 598 memcpy(paint->gradient.ramp_stopsi, stops, sizeof(VGint)*num); 599 } 600 } 601 602 void paint_ramp_stopsi(struct vg_paint *paint, VGint *stops, 603 int num) 604 { 605 memcpy(stops, paint->gradient.ramp_stopsi, sizeof(VGint)*num); 606 } 607 608 void paint_set_linear_gradienti(struct vg_paint *paint, 609 const VGint *coords) 610 { 611 memcpy(paint->gradient.linear.coordsi, coords, sizeof(VGint) * 4); 612 } 613 614 void paint_linear_gradienti(struct vg_paint *paint, 615 VGint *coords) 616 { 617 memcpy(coords, paint->gradient.linear.coordsi, sizeof(VGint)*4); 618 } 619 620 void paint_set_radial_gradienti(struct vg_paint *paint, 621 const VGint *values) 622 { 623 memcpy(paint->gradient.radial.valsi, values, sizeof(VGint) * 5); 624 } 625 626 void paint_radial_gradienti(struct vg_paint *paint, 627 VGint *coords) 628 { 629 memcpy(coords, paint->gradient.radial.valsi, sizeof(VGint)*5); 630 } 631 632 VGTilingMode paint_pattern_tiling(struct vg_paint *paint) 633 { 634 return paint->pattern.tiling_mode; 635 } 636 637 VGint paint_bind_samplers(struct vg_paint *paint, struct pipe_sampler_state **samplers, 638 struct pipe_sampler_view **sampler_views) 639 { 640 struct vg_context *ctx = vg_current_context(); 641 642 switch(paint->type) { 643 case VG_PAINT_TYPE_LINEAR_GRADIENT: 644 case VG_PAINT_TYPE_RADIAL_GRADIENT: { 645 if (paint->gradient.sampler_view) { 646 paint->gradient.sampler.min_img_filter = image_sampler_filter(ctx); 647 paint->gradient.sampler.mag_img_filter = image_sampler_filter(ctx); 648 samplers[0] = &paint->gradient.sampler; 649 sampler_views[0] = paint->gradient.sampler_view; 650 return 1; 651 } 652 } 653 break; 654 case VG_PAINT_TYPE_PATTERN: { 655 memcpy(paint->pattern.sampler.border_color.f, 656 ctx->state.vg.tile_fill_color, 657 sizeof(VGfloat) * 4); 658 paint->pattern.sampler.min_img_filter = image_sampler_filter(ctx); 659 paint->pattern.sampler.mag_img_filter = image_sampler_filter(ctx); 660 samplers[0] = &paint->pattern.sampler; 661 sampler_views[0] = paint->pattern.sampler_view; 662 return 1; 663 } 664 break; 665 default: 666 break; 667 } 668 return 0; 669 } 670 671 void paint_resolve_type(struct vg_paint *paint) 672 { 673 if (paint->type == VG_PAINT_TYPE_PATTERN && 674 !paint->pattern.sampler_view) { 675 paint->type = VG_PAINT_TYPE_COLOR; 676 } 677 } 678 679 VGboolean paint_is_degenerate(struct vg_paint *paint) 680 { 681 VGboolean degen; 682 VGfloat *vals; 683 684 685 switch (paint->type) { 686 case VG_PAINT_TYPE_LINEAR_GRADIENT: 687 vals = paint->gradient.linear.coords; 688 /* two points are coincident */ 689 degen = (floatsEqual(vals[0], vals[2]) && 690 floatsEqual(vals[1], vals[3])); 691 break; 692 case VG_PAINT_TYPE_RADIAL_GRADIENT: 693 vals = paint->gradient.radial.vals; 694 /* radius <= 0 */ 695 degen = (vals[4] <= 0.0f); 696 break; 697 case VG_PAINT_TYPE_COLOR: 698 case VG_PAINT_TYPE_PATTERN: 699 default: 700 degen = VG_FALSE; 701 break; 702 } 703 704 return degen; 705 } 706 707 VGint paint_constant_buffer_size(struct vg_paint *paint) 708 { 709 switch(paint->type) { 710 case VG_PAINT_TYPE_COLOR: 711 return 8 * sizeof(VGfloat);/*4 color + 4 constants (0.f,1.f,2.f,4.f)*/ 712 break; 713 case VG_PAINT_TYPE_LINEAR_GRADIENT: 714 return 20 * sizeof(VGfloat); 715 break; 716 case VG_PAINT_TYPE_RADIAL_GRADIENT: 717 return 20 * sizeof(VGfloat); 718 break; 719 case VG_PAINT_TYPE_PATTERN: 720 return 20 * sizeof(VGfloat); 721 break; 722 default: 723 debug_printf("Uknown paint type: %d\n", paint->type); 724 } 725 726 return 0; 727 } 728 729 void paint_fill_constant_buffer(struct vg_paint *paint, 730 const struct matrix *mat, 731 void *buffer) 732 { 733 switch(paint->type) { 734 case VG_PAINT_TYPE_COLOR: 735 paint_color_buffer(paint, buffer); 736 break; 737 case VG_PAINT_TYPE_LINEAR_GRADIENT: 738 paint_linear_gradient_buffer(paint, mat, buffer); 739 break; 740 case VG_PAINT_TYPE_RADIAL_GRADIENT: 741 paint_radial_gradient_buffer(paint, mat, buffer); 742 break; 743 case VG_PAINT_TYPE_PATTERN: 744 paint_pattern_buffer(paint, mat, buffer); 745 break; 746 747 default: 748 abort(); 749 } 750 } 751 752 VGboolean paint_is_opaque(struct vg_paint *paint) 753 { 754 /* TODO add other paint types and make sure PAINT_DIRTY gets set */ 755 return (paint->type == VG_PAINT_TYPE_COLOR && 756 floatsEqual(paint->solid.color[3], 1.0f)); 757 } 758
