u_blit.c revision 24e0a2633512afa3208969520b9e29a8b974275d
1/************************************************************************** 2 * 3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28/** 29 * @file 30 * Copy/blit pixel rect between surfaces 31 * 32 * @author Brian Paul 33 */ 34 35 36#include "pipe/p_context.h" 37#include "util/u_debug.h" 38#include "pipe/p_defines.h" 39#include "util/u_inlines.h" 40#include "pipe/p_shader_tokens.h" 41#include "pipe/p_state.h" 42 43#include "util/u_blit.h" 44#include "util/u_draw_quad.h" 45#include "util/u_format.h" 46#include "util/u_math.h" 47#include "util/u_memory.h" 48#include "util/u_sampler.h" 49#include "util/u_simple_shaders.h" 50 51#include "cso_cache/cso_context.h" 52 53 54struct blit_state 55{ 56 struct pipe_context *pipe; 57 struct cso_context *cso; 58 59 struct pipe_blend_state blend; 60 struct pipe_depth_stencil_alpha_state depthstencil_keep; 61 struct pipe_depth_stencil_alpha_state depthstencil_write; 62 struct pipe_rasterizer_state rasterizer; 63 struct pipe_sampler_state sampler; 64 struct pipe_viewport_state viewport; 65 struct pipe_vertex_element velem[2]; 66 enum pipe_texture_target internal_target; 67 68 void *vs; 69 void *fs[PIPE_MAX_TEXTURE_TYPES][TGSI_WRITEMASK_XYZW + 1]; 70 void *fs_depth[PIPE_MAX_TEXTURE_TYPES]; 71 72 struct pipe_resource *vbuf; /**< quad vertices */ 73 unsigned vbuf_slot; 74 75 float vertices[4][2][4]; /**< vertex/texcoords for quad */ 76}; 77 78 79/** 80 * Create state object for blit. 81 * Intended to be created once and re-used for many blit() calls. 82 */ 83struct blit_state * 84util_create_blit(struct pipe_context *pipe, struct cso_context *cso) 85{ 86 struct blit_state *ctx; 87 uint i; 88 89 ctx = CALLOC_STRUCT(blit_state); 90 if (!ctx) 91 return NULL; 92 93 ctx->pipe = pipe; 94 ctx->cso = cso; 95 96 /* disabled blending/masking */ 97 memset(&ctx->blend, 0, sizeof(ctx->blend)); 98 ctx->blend.rt[0].colormask = PIPE_MASK_RGBA; 99 100 /* no-op depth/stencil/alpha */ 101 memset(&ctx->depthstencil_keep, 0, sizeof(ctx->depthstencil_keep)); 102 memset(&ctx->depthstencil_write, 0, sizeof(ctx->depthstencil_write)); 103 ctx->depthstencil_write.depth.enabled = 1; 104 ctx->depthstencil_write.depth.writemask = 1; 105 ctx->depthstencil_write.depth.func = PIPE_FUNC_ALWAYS; 106 107 /* rasterizer */ 108 memset(&ctx->rasterizer, 0, sizeof(ctx->rasterizer)); 109 ctx->rasterizer.cull_face = PIPE_FACE_NONE; 110 ctx->rasterizer.gl_rasterization_rules = 1; 111 ctx->rasterizer.depth_clip = 1; 112 113 /* samplers */ 114 memset(&ctx->sampler, 0, sizeof(ctx->sampler)); 115 ctx->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 116 ctx->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 117 ctx->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; 118 ctx->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; 119 ctx->sampler.min_img_filter = 0; /* set later */ 120 ctx->sampler.mag_img_filter = 0; /* set later */ 121 122 /* vertex elements state */ 123 memset(&ctx->velem[0], 0, sizeof(ctx->velem[0]) * 2); 124 for (i = 0; i < 2; i++) { 125 ctx->velem[i].src_offset = i * 4 * sizeof(float); 126 ctx->velem[i].instance_divisor = 0; 127 ctx->velem[i].vertex_buffer_index = 0; 128 ctx->velem[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; 129 } 130 131 ctx->vbuf = NULL; 132 133 /* init vertex data that doesn't change */ 134 for (i = 0; i < 4; i++) { 135 ctx->vertices[i][0][3] = 1.0f; /* w */ 136 ctx->vertices[i][1][2] = 0.0f; /* r */ 137 ctx->vertices[i][1][3] = 1.0f; /* q */ 138 } 139 140 if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES)) 141 ctx->internal_target = PIPE_TEXTURE_2D; 142 else 143 ctx->internal_target = PIPE_TEXTURE_RECT; 144 145 return ctx; 146} 147 148 149/** 150 * Destroy a blit context 151 */ 152void 153util_destroy_blit(struct blit_state *ctx) 154{ 155 struct pipe_context *pipe = ctx->pipe; 156 unsigned i, j; 157 158 if (ctx->vs) 159 pipe->delete_vs_state(pipe, ctx->vs); 160 161 for (i = 0; i < Elements(ctx->fs); i++) { 162 for (j = 0; j < Elements(ctx->fs[i]); j++) { 163 if (ctx->fs[i][j]) 164 pipe->delete_fs_state(pipe, ctx->fs[i][j]); 165 } 166 } 167 168 for (i = 0; i < Elements(ctx->fs_depth); i++) { 169 if (ctx->fs_depth[i]) { 170 pipe->delete_fs_state(pipe, ctx->fs_depth[i]); 171 } 172 } 173 174 pipe_resource_reference(&ctx->vbuf, NULL); 175 176 FREE(ctx); 177} 178 179 180/** 181 * Helper function to set the fragment shaders. 182 */ 183static INLINE void 184set_fragment_shader(struct blit_state *ctx, uint writemask, 185 enum pipe_texture_target pipe_tex) 186{ 187 if (!ctx->fs[pipe_tex][writemask]) { 188 unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex); 189 190 ctx->fs[pipe_tex][writemask] = 191 util_make_fragment_tex_shader_writemask(ctx->pipe, tgsi_tex, 192 TGSI_INTERPOLATE_LINEAR, 193 writemask); 194 } 195 196 cso_set_fragment_shader_handle(ctx->cso, ctx->fs[pipe_tex][writemask]); 197} 198 199 200/** 201 * Helper function to set the depthwrite shader. 202 */ 203static INLINE void 204set_depth_fragment_shader(struct blit_state *ctx, 205 enum pipe_texture_target pipe_tex) 206{ 207 if (!ctx->fs_depth[pipe_tex]) { 208 unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex); 209 210 ctx->fs_depth[pipe_tex] = 211 util_make_fragment_tex_shader_writedepth(ctx->pipe, tgsi_tex, 212 TGSI_INTERPOLATE_LINEAR); 213 } 214 215 cso_set_fragment_shader_handle(ctx->cso, ctx->fs_depth[pipe_tex]); 216} 217 218 219/** 220 * Helper function to set the vertex shader. 221 */ 222static INLINE void 223set_vertex_shader(struct blit_state *ctx) 224{ 225 /* vertex shader - still required to provide the linkage between 226 * fragment shader input semantics and vertex_element/buffers. 227 */ 228 if (!ctx->vs) { 229 const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, 230 TGSI_SEMANTIC_GENERIC }; 231 const uint semantic_indexes[] = { 0, 0 }; 232 ctx->vs = util_make_vertex_passthrough_shader(ctx->pipe, 2, 233 semantic_names, 234 semantic_indexes); 235 } 236 237 cso_set_vertex_shader_handle(ctx->cso, ctx->vs); 238} 239 240 241/** 242 * Get offset of next free slot in vertex buffer for quad vertices. 243 */ 244static unsigned 245get_next_slot( struct blit_state *ctx ) 246{ 247 const unsigned max_slots = 4096 / sizeof ctx->vertices; 248 249 if (ctx->vbuf_slot >= max_slots) { 250 pipe_resource_reference(&ctx->vbuf, NULL); 251 ctx->vbuf_slot = 0; 252 } 253 254 if (!ctx->vbuf) { 255 ctx->vbuf = pipe_buffer_create(ctx->pipe->screen, 256 PIPE_BIND_VERTEX_BUFFER, 257 PIPE_USAGE_STREAM, 258 max_slots * sizeof ctx->vertices); 259 } 260 261 return ctx->vbuf_slot++ * sizeof ctx->vertices; 262} 263 264 265 266 267/** 268 * Setup vertex data for the textured quad we'll draw. 269 * Note: y=0=top 270 */ 271static unsigned 272setup_vertex_data_tex(struct blit_state *ctx, 273 float x0, float y0, float x1, float y1, 274 float s0, float t0, float s1, float t1, 275 float z) 276{ 277 unsigned offset; 278 279 ctx->vertices[0][0][0] = x0; 280 ctx->vertices[0][0][1] = y0; 281 ctx->vertices[0][0][2] = z; 282 ctx->vertices[0][1][0] = s0; /*s*/ 283 ctx->vertices[0][1][1] = t0; /*t*/ 284 285 ctx->vertices[1][0][0] = x1; 286 ctx->vertices[1][0][1] = y0; 287 ctx->vertices[1][0][2] = z; 288 ctx->vertices[1][1][0] = s1; /*s*/ 289 ctx->vertices[1][1][1] = t0; /*t*/ 290 291 ctx->vertices[2][0][0] = x1; 292 ctx->vertices[2][0][1] = y1; 293 ctx->vertices[2][0][2] = z; 294 ctx->vertices[2][1][0] = s1; 295 ctx->vertices[2][1][1] = t1; 296 297 ctx->vertices[3][0][0] = x0; 298 ctx->vertices[3][0][1] = y1; 299 ctx->vertices[3][0][2] = z; 300 ctx->vertices[3][1][0] = s0; 301 ctx->vertices[3][1][1] = t1; 302 303 offset = get_next_slot( ctx ); 304 305 if (ctx->vbuf) { 306 pipe_buffer_write_nooverlap(ctx->pipe, ctx->vbuf, 307 offset, sizeof(ctx->vertices), ctx->vertices); 308 } 309 310 return offset; 311} 312 313 314/** 315 * \return TRUE if two regions overlap, FALSE otherwise 316 */ 317static boolean 318regions_overlap(int srcX0, int srcY0, 319 int srcX1, int srcY1, 320 int dstX0, int dstY0, 321 int dstX1, int dstY1) 322{ 323 if (MAX2(srcX0, srcX1) < MIN2(dstX0, dstX1)) 324 return FALSE; /* src completely left of dst */ 325 326 if (MAX2(dstX0, dstX1) < MIN2(srcX0, srcX1)) 327 return FALSE; /* dst completely left of src */ 328 329 if (MAX2(srcY0, srcY1) < MIN2(dstY0, dstY1)) 330 return FALSE; /* src completely above dst */ 331 332 if (MAX2(dstY0, dstY1) < MIN2(srcY0, srcY1)) 333 return FALSE; /* dst completely above src */ 334 335 return TRUE; /* some overlap */ 336} 337 338 339/** 340 * Can we blit from src format to dest format with a simple copy? 341 */ 342static boolean 343formats_compatible(enum pipe_format src_format, 344 enum pipe_format dst_format) 345{ 346 if (src_format == dst_format) { 347 return TRUE; 348 } 349 else { 350 const struct util_format_description *src_desc = 351 util_format_description(src_format); 352 const struct util_format_description *dst_desc = 353 util_format_description(dst_format); 354 return util_is_format_compatible(src_desc, dst_desc); 355 } 356} 357 358 359/** 360 * Copy pixel block from src surface to dst surface. 361 * Overlapping regions are acceptable. 362 * Flipping and stretching are supported. 363 * \param filter one of PIPE_TEX_MIPFILTER_NEAREST/LINEAR 364 * \param writemask controls which channels in the dest surface are sourced 365 * from the src surface. Disabled channels are sourced 366 * from (0,0,0,1). 367 * XXX need some control over blitting stencil. 368 */ 369void 370util_blit_pixels(struct blit_state *ctx, 371 struct pipe_resource *src_tex, 372 unsigned src_level, 373 int srcX0, int srcY0, 374 int srcX1, int srcY1, 375 int srcZ0, 376 struct pipe_surface *dst, 377 int dstX0, int dstY0, 378 int dstX1, int dstY1, 379 float z, uint filter, 380 uint writemask) 381{ 382 struct pipe_context *pipe = ctx->pipe; 383 struct pipe_screen *screen = pipe->screen; 384 enum pipe_format src_format, dst_format; 385 struct pipe_sampler_view *sampler_view = NULL; 386 struct pipe_sampler_view sv_templ; 387 struct pipe_surface *dst_surface; 388 struct pipe_framebuffer_state fb; 389 const int srcW = abs(srcX1 - srcX0); 390 const int srcH = abs(srcY1 - srcY0); 391 unsigned offset; 392 boolean overlap, dst_is_depth; 393 float s0, t0, s1, t1; 394 boolean normalized; 395 396 assert(filter == PIPE_TEX_MIPFILTER_NEAREST || 397 filter == PIPE_TEX_MIPFILTER_LINEAR); 398 399 assert(src_level <= src_tex->last_level); 400 401 /* do the regions overlap? */ 402 overlap = src_tex == dst->texture && 403 dst->u.tex.level == src_level && 404 dst->u.tex.first_layer == srcZ0 && 405 regions_overlap(srcX0, srcY0, srcX1, srcY1, 406 dstX0, dstY0, dstX1, dstY1); 407 408 src_format = util_format_linear(src_tex->format); 409 dst_format = util_format_linear(dst->format); 410 411 /* 412 * Check for simple case: no format conversion, no flipping, no stretching, 413 * no overlapping. 414 * Filter mode should not matter since there's no stretching. 415 */ 416 if (formats_compatible(src_format, dst_format) && 417 srcX0 < srcX1 && 418 dstX0 < dstX1 && 419 srcY0 < srcY1 && 420 dstY0 < dstY1 && 421 (dstX1 - dstX0) == (srcX1 - srcX0) && 422 (dstY1 - dstY0) == (srcY1 - srcY0) && 423 !overlap) { 424 struct pipe_box src_box; 425 src_box.x = srcX0; 426 src_box.y = srcY0; 427 src_box.z = srcZ0; 428 src_box.width = srcW; 429 src_box.height = srcH; 430 src_box.depth = 1; 431 pipe->resource_copy_region(pipe, 432 dst->texture, dst->u.tex.level, 433 dstX0, dstY0, dst->u.tex.first_layer,/* dest */ 434 src_tex, src_level, 435 &src_box); 436 return; 437 } 438 439 if (dst_format == dst->format) { 440 dst_surface = dst; 441 } else { 442 struct pipe_surface templ = *dst; 443 templ.format = dst_format; 444 dst_surface = pipe->create_surface(pipe, dst->texture, &templ); 445 } 446 447 /* Create a temporary texture when src and dest alias. 448 */ 449 if (src_tex == dst_surface->texture && 450 dst_surface->u.tex.level == src_level && 451 dst_surface->u.tex.first_layer == srcZ0) { 452 /* Make a temporary texture which contains a copy of the source pixels. 453 * Then we'll sample from the temporary texture. 454 */ 455 struct pipe_resource texTemp; 456 struct pipe_resource *tex; 457 struct pipe_sampler_view sv_templ; 458 struct pipe_box src_box; 459 const int srcLeft = MIN2(srcX0, srcX1); 460 const int srcTop = MIN2(srcY0, srcY1); 461 462 if (srcLeft != srcX0) { 463 /* left-right flip */ 464 int tmp = dstX0; 465 dstX0 = dstX1; 466 dstX1 = tmp; 467 } 468 469 if (srcTop != srcY0) { 470 /* up-down flip */ 471 int tmp = dstY0; 472 dstY0 = dstY1; 473 dstY1 = tmp; 474 } 475 476 /* create temp texture */ 477 memset(&texTemp, 0, sizeof(texTemp)); 478 texTemp.target = ctx->internal_target; 479 texTemp.format = src_format; 480 texTemp.last_level = 0; 481 texTemp.width0 = srcW; 482 texTemp.height0 = srcH; 483 texTemp.depth0 = 1; 484 texTemp.array_size = 1; 485 texTemp.bind = PIPE_BIND_SAMPLER_VIEW; 486 487 tex = screen->resource_create(screen, &texTemp); 488 if (!tex) 489 return; 490 491 src_box.x = srcLeft; 492 src_box.y = srcTop; 493 src_box.z = srcZ0; 494 src_box.width = srcW; 495 src_box.height = srcH; 496 src_box.depth = 1; 497 /* load temp texture */ 498 pipe->resource_copy_region(pipe, 499 tex, 0, 0, 0, 0, /* dest */ 500 src_tex, src_level, &src_box); 501 502 normalized = tex->target != PIPE_TEXTURE_RECT; 503 if(normalized) { 504 s0 = 0.0f; 505 s1 = 1.0f; 506 t0 = 0.0f; 507 t1 = 1.0f; 508 } 509 else { 510 s0 = 0; 511 s1 = srcW; 512 t0 = 0; 513 t1 = srcH; 514 } 515 516 u_sampler_view_default_template(&sv_templ, tex, tex->format); 517 sampler_view = pipe->create_sampler_view(pipe, tex, &sv_templ); 518 519 if (!sampler_view) { 520 pipe_resource_reference(&tex, NULL); 521 return; 522 } 523 pipe_resource_reference(&tex, NULL); 524 } 525 else { 526 /* Directly sample from the source resource/texture */ 527 u_sampler_view_default_template(&sv_templ, src_tex, src_format); 528 sampler_view = pipe->create_sampler_view(pipe, src_tex, &sv_templ); 529 530 if (!sampler_view) { 531 return; 532 } 533 534 s0 = srcX0; 535 s1 = srcX1; 536 t0 = srcY0; 537 t1 = srcY1; 538 normalized = sampler_view->texture->target != PIPE_TEXTURE_RECT; 539 if(normalized) 540 { 541 s0 /= (float)(u_minify(sampler_view->texture->width0, src_level)); 542 s1 /= (float)(u_minify(sampler_view->texture->width0, src_level)); 543 t0 /= (float)(u_minify(sampler_view->texture->height0, src_level)); 544 t1 /= (float)(u_minify(sampler_view->texture->height0, src_level)); 545 } 546 } 547 548 dst_is_depth = util_format_is_depth_or_stencil(dst_format); 549 550 assert(screen->is_format_supported(screen, sampler_view->format, ctx->internal_target, 551 sampler_view->texture->nr_samples, 552 PIPE_BIND_SAMPLER_VIEW)); 553 assert(screen->is_format_supported(screen, dst_format, ctx->internal_target, 554 dst_surface->texture->nr_samples, 555 dst_is_depth ? PIPE_BIND_DEPTH_STENCIL : 556 PIPE_BIND_RENDER_TARGET)); 557 /* save state (restored below) */ 558 cso_save_blend(ctx->cso); 559 cso_save_depth_stencil_alpha(ctx->cso); 560 cso_save_rasterizer(ctx->cso); 561 cso_save_samplers(ctx->cso); 562 cso_save_fragment_sampler_views(ctx->cso); 563 cso_save_stream_outputs(ctx->cso); 564 cso_save_viewport(ctx->cso); 565 cso_save_framebuffer(ctx->cso); 566 cso_save_fragment_shader(ctx->cso); 567 cso_save_vertex_shader(ctx->cso); 568 cso_save_geometry_shader(ctx->cso); 569 cso_save_vertex_elements(ctx->cso); 570 cso_save_vertex_buffers(ctx->cso); 571 572 /* set misc state we care about */ 573 cso_set_blend(ctx->cso, &ctx->blend); 574 cso_set_depth_stencil_alpha(ctx->cso, 575 dst_is_depth ? &ctx->depthstencil_write : 576 &ctx->depthstencil_keep); 577 cso_set_rasterizer(ctx->cso, &ctx->rasterizer); 578 cso_set_vertex_elements(ctx->cso, 2, ctx->velem); 579 cso_set_stream_outputs(ctx->cso, 0, NULL, 0); 580 581 /* sampler */ 582 ctx->sampler.normalized_coords = normalized; 583 ctx->sampler.min_img_filter = filter; 584 ctx->sampler.mag_img_filter = filter; 585 ctx->sampler.min_lod = src_level; 586 ctx->sampler.max_lod = src_level; 587 cso_single_sampler(ctx->cso, 0, &ctx->sampler); 588 cso_single_sampler_done(ctx->cso); 589 590 /* viewport */ 591 ctx->viewport.scale[0] = 0.5f * dst_surface->width; 592 ctx->viewport.scale[1] = 0.5f * dst_surface->height; 593 ctx->viewport.scale[2] = 0.5f; 594 ctx->viewport.scale[3] = 1.0f; 595 ctx->viewport.translate[0] = 0.5f * dst_surface->width; 596 ctx->viewport.translate[1] = 0.5f * dst_surface->height; 597 ctx->viewport.translate[2] = 0.5f; 598 ctx->viewport.translate[3] = 0.0f; 599 cso_set_viewport(ctx->cso, &ctx->viewport); 600 601 /* texture */ 602 cso_set_fragment_sampler_views(ctx->cso, 1, &sampler_view); 603 604 /* shaders */ 605 if (dst_is_depth) { 606 set_depth_fragment_shader(ctx, sampler_view->texture->target); 607 } else { 608 set_fragment_shader(ctx, writemask, sampler_view->texture->target); 609 } 610 set_vertex_shader(ctx); 611 cso_set_geometry_shader_handle(ctx->cso, NULL); 612 613 /* drawing dest */ 614 memset(&fb, 0, sizeof(fb)); 615 fb.width = dst_surface->width; 616 fb.height = dst_surface->height; 617 if (dst_is_depth) { 618 fb.zsbuf = dst_surface; 619 } else { 620 fb.nr_cbufs = 1; 621 fb.cbufs[0] = dst_surface; 622 } 623 cso_set_framebuffer(ctx->cso, &fb); 624 625 /* draw quad */ 626 offset = setup_vertex_data_tex(ctx, 627 (float) dstX0 / dst_surface->width * 2.0f - 1.0f, 628 (float) dstY0 / dst_surface->height * 2.0f - 1.0f, 629 (float) dstX1 / dst_surface->width * 2.0f - 1.0f, 630 (float) dstY1 / dst_surface->height * 2.0f - 1.0f, 631 s0, t0, 632 s1, t1, 633 z); 634 635 if (ctx->vbuf) { 636 util_draw_vertex_buffer(ctx->pipe, ctx->cso, ctx->vbuf, offset, 637 PIPE_PRIM_TRIANGLE_FAN, 638 4, /* verts */ 639 2); /* attribs/vert */ 640 } 641 642 /* restore state we changed */ 643 cso_restore_blend(ctx->cso); 644 cso_restore_depth_stencil_alpha(ctx->cso); 645 cso_restore_rasterizer(ctx->cso); 646 cso_restore_samplers(ctx->cso); 647 cso_restore_fragment_sampler_views(ctx->cso); 648 cso_restore_viewport(ctx->cso); 649 cso_restore_framebuffer(ctx->cso); 650 cso_restore_fragment_shader(ctx->cso); 651 cso_restore_vertex_shader(ctx->cso); 652 cso_restore_geometry_shader(ctx->cso); 653 cso_restore_vertex_elements(ctx->cso); 654 cso_restore_vertex_buffers(ctx->cso); 655 cso_restore_stream_outputs(ctx->cso); 656 657 pipe_sampler_view_reference(&sampler_view, NULL); 658 if (dst_surface != dst) 659 pipe_surface_reference(&dst_surface, NULL); 660} 661 662 663/** 664 * Copy pixel block from src texture to dst surface. 665 * The sampler view's first_level field indicates the source 666 * mipmap level to use. 667 * XXX need some control over blitting Z and/or stencil. 668 */ 669void 670util_blit_pixels_tex(struct blit_state *ctx, 671 struct pipe_sampler_view *src_sampler_view, 672 int srcX0, int srcY0, 673 int srcX1, int srcY1, 674 struct pipe_surface *dst, 675 int dstX0, int dstY0, 676 int dstX1, int dstY1, 677 float z, uint filter) 678{ 679 boolean normalized = src_sampler_view->texture->target != PIPE_TEXTURE_RECT; 680 struct pipe_framebuffer_state fb; 681 float s0, t0, s1, t1; 682 unsigned offset; 683 struct pipe_resource *tex = src_sampler_view->texture; 684 685 assert(filter == PIPE_TEX_MIPFILTER_NEAREST || 686 filter == PIPE_TEX_MIPFILTER_LINEAR); 687 688 assert(tex); 689 assert(tex->width0 != 0); 690 assert(tex->height0 != 0); 691 692 s0 = srcX0; 693 s1 = srcX1; 694 t0 = srcY0; 695 t1 = srcY1; 696 697 if(normalized) 698 { 699 /* normalize according to the mipmap level's size */ 700 int level = src_sampler_view->u.tex.first_level; 701 float w = (float) u_minify(tex->width0, level); 702 float h = (float) u_minify(tex->height0, level); 703 s0 /= w; 704 s1 /= w; 705 t0 /= h; 706 t1 /= h; 707 } 708 709 assert(ctx->pipe->screen->is_format_supported(ctx->pipe->screen, dst->format, 710 PIPE_TEXTURE_2D, 711 dst->texture->nr_samples, 712 PIPE_BIND_RENDER_TARGET)); 713 714 /* save state (restored below) */ 715 cso_save_blend(ctx->cso); 716 cso_save_depth_stencil_alpha(ctx->cso); 717 cso_save_rasterizer(ctx->cso); 718 cso_save_samplers(ctx->cso); 719 cso_save_fragment_sampler_views(ctx->cso); 720 cso_save_stream_outputs(ctx->cso); 721 cso_save_viewport(ctx->cso); 722 cso_save_framebuffer(ctx->cso); 723 cso_save_fragment_shader(ctx->cso); 724 cso_save_vertex_shader(ctx->cso); 725 cso_save_geometry_shader(ctx->cso); 726 cso_save_vertex_elements(ctx->cso); 727 cso_save_vertex_buffers(ctx->cso); 728 729 /* set misc state we care about */ 730 cso_set_blend(ctx->cso, &ctx->blend); 731 cso_set_depth_stencil_alpha(ctx->cso, &ctx->depthstencil_keep); 732 cso_set_rasterizer(ctx->cso, &ctx->rasterizer); 733 cso_set_vertex_elements(ctx->cso, 2, ctx->velem); 734 cso_set_stream_outputs(ctx->cso, 0, NULL, 0); 735 736 /* sampler */ 737 ctx->sampler.normalized_coords = normalized; 738 ctx->sampler.min_img_filter = filter; 739 ctx->sampler.mag_img_filter = filter; 740 cso_single_sampler(ctx->cso, 0, &ctx->sampler); 741 cso_single_sampler_done(ctx->cso); 742 743 /* viewport */ 744 ctx->viewport.scale[0] = 0.5f * dst->width; 745 ctx->viewport.scale[1] = 0.5f * dst->height; 746 ctx->viewport.scale[2] = 0.5f; 747 ctx->viewport.scale[3] = 1.0f; 748 ctx->viewport.translate[0] = 0.5f * dst->width; 749 ctx->viewport.translate[1] = 0.5f * dst->height; 750 ctx->viewport.translate[2] = 0.5f; 751 ctx->viewport.translate[3] = 0.0f; 752 cso_set_viewport(ctx->cso, &ctx->viewport); 753 754 /* texture */ 755 cso_set_fragment_sampler_views(ctx->cso, 1, &src_sampler_view); 756 757 /* shaders */ 758 set_fragment_shader(ctx, TGSI_WRITEMASK_XYZW, 759 src_sampler_view->texture->target); 760 set_vertex_shader(ctx); 761 cso_set_geometry_shader_handle(ctx->cso, NULL); 762 763 /* drawing dest */ 764 memset(&fb, 0, sizeof(fb)); 765 fb.width = dst->width; 766 fb.height = dst->height; 767 fb.nr_cbufs = 1; 768 fb.cbufs[0] = dst; 769 cso_set_framebuffer(ctx->cso, &fb); 770 771 /* draw quad */ 772 offset = setup_vertex_data_tex(ctx, 773 (float) dstX0 / dst->width * 2.0f - 1.0f, 774 (float) dstY0 / dst->height * 2.0f - 1.0f, 775 (float) dstX1 / dst->width * 2.0f - 1.0f, 776 (float) dstY1 / dst->height * 2.0f - 1.0f, 777 s0, t0, s1, t1, 778 z); 779 780 util_draw_vertex_buffer(ctx->pipe, ctx->cso, 781 ctx->vbuf, offset, 782 PIPE_PRIM_TRIANGLE_FAN, 783 4, /* verts */ 784 2); /* attribs/vert */ 785 786 /* restore state we changed */ 787 cso_restore_blend(ctx->cso); 788 cso_restore_depth_stencil_alpha(ctx->cso); 789 cso_restore_rasterizer(ctx->cso); 790 cso_restore_samplers(ctx->cso); 791 cso_restore_fragment_sampler_views(ctx->cso); 792 cso_restore_viewport(ctx->cso); 793 cso_restore_framebuffer(ctx->cso); 794 cso_restore_fragment_shader(ctx->cso); 795 cso_restore_vertex_shader(ctx->cso); 796 cso_restore_geometry_shader(ctx->cso); 797 cso_restore_vertex_elements(ctx->cso); 798 cso_restore_vertex_buffers(ctx->cso); 799 cso_restore_stream_outputs(ctx->cso); 800} 801