src/gallium/auxiliary/util/u_blitter.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Marek Olšák <maraeo@gmail.com>
   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 TUNGSTEN GRAPHICS 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 /**
  28  * @file
  29  * Blitter utility to facilitate acceleration of the clear, clear_render_target,
  30  * clear_depth_stencil, and resource_copy_region functions.
  31  *
  32  * @author Marek Olšák
  33  */
  34
  35 #include "pipe/p_context.h"
  36 #include "pipe/p_defines.h"
  37 #include "util/u_inlines.h"
  38 #include "pipe/p_shader_tokens.h"
  39 #include "pipe/p_state.h"
  40
  41 #include "util/u_format.h"
  42 #include "util/u_memory.h"
  43 #include "util/u_math.h"
  44 #include "util/u_blitter.h"
  45 #include "util/u_draw_quad.h"
  46 #include "util/u_sampler.h"
  47 #include "util/u_simple_shaders.h"
  48 #include "util/u_surface.h"
  49 #include "util/u_texture.h"
  50 #include "util/u_upload_mgr.h"
  51
  52 #define INVALID_PTR ((void*)~0)
  53
  54 struct blitter_context_priv
  55 {
  56    struct blitter_context base;
  57
  58    struct u_upload_mgr *upload;
  59
  60    float vertices[4][2][4];   /**< {pos, color} or {pos, texcoord} */
  61
  62    /* Templates for various state objects. */
  63
  64    /* Constant state objects. */
  65    /* Vertex shaders. */
  66    void *vs; /**< Vertex shader which passes {pos, generic} to the output.*/
  67    void *vs_pos_only; /**< Vertex shader which passes pos to the output.*/
  68
  69    /* Fragment shaders. */
  70    /* The shader at index i outputs color to color buffers 0,1,...,i-1. */
  71    void *fs_col[PIPE_MAX_COLOR_BUFS+1];
  72    void *fs_col_int[PIPE_MAX_COLOR_BUFS+1];
  73
  74    /* FS which outputs a color from a texture,
  75       where the index is PIPE_TEXTURE_* to be sampled. */
  76    void *fs_texfetch_col[PIPE_MAX_TEXTURE_TYPES];
  77
  78    /* FS which outputs a depth from a texture,
  79       where the index is PIPE_TEXTURE_* to be sampled. */
  80    void *fs_texfetch_depth[PIPE_MAX_TEXTURE_TYPES];
  81    void *fs_texfetch_depthstencil[PIPE_MAX_TEXTURE_TYPES];
  82    void *fs_texfetch_stencil[PIPE_MAX_TEXTURE_TYPES];
  83
  84    /* FS which outputs one sample from a multisample texture. */
  85    void *fs_texfetch_col_msaa[PIPE_MAX_TEXTURE_TYPES];
  86    void *fs_texfetch_depth_msaa[PIPE_MAX_TEXTURE_TYPES];
  87    void *fs_texfetch_depthstencil_msaa[PIPE_MAX_TEXTURE_TYPES];
  88    void *fs_texfetch_stencil_msaa[PIPE_MAX_TEXTURE_TYPES];
  89
  90    /* Blend state. */
  91    void *blend_write_color;   /**< blend state with writemask of RGBA */
  92    void *blend_keep_color;    /**< blend state with writemask of 0 */
  93
  94    /* Depth stencil alpha state. */
  95    void *dsa_write_depth_stencil;
  96    void *dsa_write_depth_keep_stencil;
  97    void *dsa_keep_depth_stencil;
  98    void *dsa_keep_depth_write_stencil;
  99
 100    /* Vertex elements states. */
 101    void *velem_state;
 102    void *velem_uint_state;
 103    void *velem_sint_state;
 104    void *velem_state_readbuf;
 105
 106    /* Sampler state. */
 107    void *sampler_state;
 108
 109    /* Rasterizer state. */
 110    void *rs_state;
 111    void *rs_discard_state;
 112
 113    /* Viewport state. */
 114    struct pipe_viewport_state viewport;
 115
 116    /* Destination surface dimensions. */
 117    unsigned dst_width;
 118    unsigned dst_height;
 119
 120    boolean has_geometry_shader;
 121    boolean vertex_has_integers;
 122    boolean has_stream_out;
 123    boolean has_stencil_export;
 124 };
 125
 126
 127 struct blitter_context *util_blitter_create(struct pipe_context *pipe)
 128 {
 129    struct blitter_context_priv *ctx;
 130    struct pipe_blend_state blend;
 131    struct pipe_depth_stencil_alpha_state dsa;
 132    struct pipe_rasterizer_state rs_state;
 133    struct pipe_sampler_state sampler_state;
 134    struct pipe_vertex_element velem[2];
 135    unsigned i;
 136
 137    ctx = CALLOC_STRUCT(blitter_context_priv);
 138    if (!ctx)
 139       return NULL;
 140
 141    ctx->base.pipe = pipe;
 142    ctx->base.draw_rectangle = util_blitter_draw_rectangle;
 143
 144    /* init state objects for them to be considered invalid */
 145    ctx->base.saved_blend_state = INVALID_PTR;
 146    ctx->base.saved_dsa_state = INVALID_PTR;
 147    ctx->base.saved_rs_state = INVALID_PTR;
 148    ctx->base.saved_fs = INVALID_PTR;
 149    ctx->base.saved_vs = INVALID_PTR;
 150    ctx->base.saved_gs = INVALID_PTR;
 151    ctx->base.saved_velem_state = INVALID_PTR;
 152    ctx->base.saved_fb_state.nr_cbufs = ~0;
 153    ctx->base.saved_num_sampler_views = ~0;
 154    ctx->base.saved_num_sampler_states = ~0;
 155    ctx->base.saved_num_vertex_buffers = ~0;
 156    ctx->base.saved_num_so_targets = ~0;
 157
 158    ctx->has_geometry_shader =
 159       pipe->screen->get_shader_param(pipe->screen, PIPE_SHADER_GEOMETRY,
 160                                      PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0;
 161    ctx->vertex_has_integers =
 162       pipe->screen->get_shader_param(pipe->screen, PIPE_SHADER_VERTEX,
 163                                      PIPE_SHADER_CAP_INTEGERS);
 164    ctx->has_stream_out =
 165       pipe->screen->get_param(pipe->screen,
 166                               PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS) != 0;
 167
 168    ctx->has_stencil_export =
 169          pipe->screen->get_param(pipe->screen,
 170                                  PIPE_CAP_SHADER_STENCIL_EXPORT);
 171
 172    /* blend state objects */
 173    memset(&blend, 0, sizeof(blend));
 174    ctx->blend_keep_color = pipe->create_blend_state(pipe, &blend);
 175
 176    blend.rt[0].colormask = PIPE_MASK_RGBA;
 177    ctx->blend_write_color = pipe->create_blend_state(pipe, &blend);
 178
 179    /* depth stencil alpha state objects */
 180    memset(&dsa, 0, sizeof(dsa));
 181    ctx->dsa_keep_depth_stencil =
 182       pipe->create_depth_stencil_alpha_state(pipe, &dsa);
 183
 184    dsa.depth.enabled = 1;
 185    dsa.depth.writemask = 1;
 186    dsa.depth.func = PIPE_FUNC_ALWAYS;
 187    ctx->dsa_write_depth_keep_stencil =
 188       pipe->create_depth_stencil_alpha_state(pipe, &dsa);
 189
 190    dsa.stencil[0].enabled = 1;
 191    dsa.stencil[0].func = PIPE_FUNC_ALWAYS;
 192    dsa.stencil[0].fail_op = PIPE_STENCIL_OP_REPLACE;
 193    dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
 194    dsa.stencil[0].zfail_op = PIPE_STENCIL_OP_REPLACE;
 195    dsa.stencil[0].valuemask = 0xff;
 196    dsa.stencil[0].writemask = 0xff;
 197    ctx->dsa_write_depth_stencil =
 198       pipe->create_depth_stencil_alpha_state(pipe, &dsa);
 199
 200    dsa.depth.enabled = 0;
 201    dsa.depth.writemask = 0;
 202    ctx->dsa_keep_depth_write_stencil =
 203       pipe->create_depth_stencil_alpha_state(pipe, &dsa);
 204
 205    /* sampler state */
 206    memset(&sampler_state, 0, sizeof(sampler_state));
 207    sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 208    sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 209    sampler_state.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 210    sampler_state.normalized_coords = 1;
 211    ctx->sampler_state = pipe->create_sampler_state(pipe, &sampler_state);
 212
 213    /* rasterizer state */
 214    memset(&rs_state, 0, sizeof(rs_state));
 215    rs_state.cull_face = PIPE_FACE_NONE;
 216    rs_state.gl_rasterization_rules = 1;
 217    rs_state.flatshade = 1;
 218    rs_state.depth_clip = 1;
 219    ctx->rs_state = pipe->create_rasterizer_state(pipe, &rs_state);
 220
 221    if (ctx->has_stream_out) {
 222       rs_state.rasterizer_discard = 1;
 223       ctx->rs_discard_state = pipe->create_rasterizer_state(pipe, &rs_state);
 224    }
 225
 226    /* vertex elements states */
 227    memset(&velem[0], 0, sizeof(velem[0]) * 2);
 228    for (i = 0; i < 2; i++) {
 229       velem[i].src_offset = i * 4 * sizeof(float);
 230       velem[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 231    }
 232    ctx->velem_state = pipe->create_vertex_elements_state(pipe, 2, &velem[0]);
 233
 234    if (ctx->vertex_has_integers) {
 235       memset(&velem[0], 0, sizeof(velem[0]) * 2);
 236       velem[0].src_offset = 0;
 237       velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 238       velem[1].src_offset = 4 * sizeof(float);
 239       velem[1].src_format = PIPE_FORMAT_R32G32B32A32_SINT;
 240       ctx->velem_sint_state = pipe->create_vertex_elements_state(pipe, 2, &velem[0]);
 241
 242       memset(&velem[0], 0, sizeof(velem[0]) * 2);
 243       velem[0].src_offset = 0;
 244       velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 245       velem[1].src_offset = 4 * sizeof(float);
 246       velem[1].src_format = PIPE_FORMAT_R32G32B32A32_UINT;
 247       ctx->velem_uint_state = pipe->create_vertex_elements_state(pipe, 2, &velem[0]);
 248    }
 249
 250    if (ctx->has_stream_out) {
 251       velem[0].src_format = PIPE_FORMAT_R32_UINT;
 252       ctx->velem_state_readbuf = pipe->create_vertex_elements_state(pipe, 1, &velem[0]);
 253    }
 254
 255    /* fragment shaders are created on-demand */
 256
 257    /* vertex shaders */
 258    {
 259       const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
 260                                       TGSI_SEMANTIC_GENERIC };
 261       const uint semantic_indices[] = { 0, 0 };
 262       ctx->vs =
 263          util_make_vertex_passthrough_shader(pipe, 2, semantic_names,
 264                                              semantic_indices);
 265    }
 266    if (ctx->has_stream_out) {
 267       struct pipe_stream_output_info so;
 268       const uint semantic_names[] = { TGSI_SEMANTIC_POSITION };
 269       const uint semantic_indices[] = { 0 };
 270
 271       memset(&so, 0, sizeof(so));
 272       so.num_outputs = 1;
 273       so.output[0].num_components = 1;
 274       so.stride[0] = 1;
 275
 276       ctx->vs_pos_only =
 277          util_make_vertex_passthrough_shader_with_so(pipe, 1, semantic_names,
 278                                                      semantic_indices, &so);
 279    }
 280
 281    /* set invariant vertex coordinates */
 282    for (i = 0; i < 4; i++)
 283       ctx->vertices[i][0][3] = 1; /*v.w*/
 284
 285    ctx->upload = u_upload_create(pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
 286
 287    return &ctx->base;
 288 }
 289
 290 void util_blitter_destroy(struct blitter_context *blitter)
 291 {
 292    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
 293    struct pipe_context *pipe = blitter->pipe;
 294    int i;
 295
 296    pipe->delete_blend_state(pipe, ctx->blend_write_color);
 297    pipe->delete_blend_state(pipe, ctx->blend_keep_color);
 298    pipe->delete_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
 299    pipe->delete_depth_stencil_alpha_state(pipe,
 300                                           ctx->dsa_write_depth_keep_stencil);
 301    pipe->delete_depth_stencil_alpha_state(pipe, ctx->dsa_write_depth_stencil);
 302    pipe->delete_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_write_stencil);
 303
 304    pipe->delete_rasterizer_state(pipe, ctx->rs_state);
 305    if (ctx->rs_discard_state)
 306       pipe->delete_rasterizer_state(pipe, ctx->rs_discard_state);
 307    pipe->delete_vs_state(pipe, ctx->vs);
 308    if (ctx->vs_pos_only)
 309       pipe->delete_vs_state(pipe, ctx->vs_pos_only);
 310    pipe->delete_vertex_elements_state(pipe, ctx->velem_state);
 311    if (ctx->vertex_has_integers) {
 312       pipe->delete_vertex_elements_state(pipe, ctx->velem_sint_state);
 313       pipe->delete_vertex_elements_state(pipe, ctx->velem_uint_state);
 314    }
 315    if (ctx->velem_state_readbuf)
 316       pipe->delete_vertex_elements_state(pipe, ctx->velem_state_readbuf);
 317
 318    for (i = 0; i < PIPE_MAX_TEXTURE_TYPES; i++) {
 319       if (ctx->fs_texfetch_col[i])
 320          pipe->delete_fs_state(pipe, ctx->fs_texfetch_col[i]);
 321       if (ctx->fs_texfetch_depth[i])
 322          pipe->delete_fs_state(pipe, ctx->fs_texfetch_depth[i]);
 323       if (ctx->fs_texfetch_depthstencil[i])
 324          pipe->delete_fs_state(pipe, ctx->fs_texfetch_depthstencil[i]);
 325       if (ctx->fs_texfetch_stencil[i])
 326          pipe->delete_fs_state(pipe, ctx->fs_texfetch_stencil[i]);
 327    }
 328
 329    for (i = 0; i <= PIPE_MAX_COLOR_BUFS; i++) {
 330       if (ctx->fs_col[i])
 331          pipe->delete_fs_state(pipe, ctx->fs_col[i]);
 332       if (ctx->fs_col_int[i])
 333          pipe->delete_fs_state(pipe, ctx->fs_col_int[i]);
 334    }
 335
 336    pipe->delete_sampler_state(pipe, ctx->sampler_state);
 337    u_upload_destroy(ctx->upload);
 338    FREE(ctx);
 339 }
 340
 341 static void blitter_set_running_flag(struct blitter_context_priv *ctx)
 342 {
 343    if (ctx->base.running) {
 344       _debug_printf("u_blitter:%i: Caught recursion. This is a driver bug.\n",
 345                     __LINE__);
 346    }
 347    ctx->base.running = TRUE;
 348 }
 349
 350 static void blitter_unset_running_flag(struct blitter_context_priv *ctx)
 351 {
 352    if (!ctx->base.running) {
 353       _debug_printf("u_blitter:%i: Caught recursion. This is a driver bug.\n",
 354                     __LINE__);
 355    }
 356    ctx->base.running = FALSE;
 357 }
 358
 359 static void blitter_check_saved_vertex_states(struct blitter_context_priv *ctx)
 360 {
 361    assert(ctx->base.saved_num_vertex_buffers != ~0);
 362    assert(ctx->base.saved_velem_state != INVALID_PTR);
 363    assert(ctx->base.saved_vs != INVALID_PTR);
 364    assert(!ctx->has_geometry_shader || ctx->base.saved_gs != INVALID_PTR);
 365    assert(!ctx->has_stream_out || ctx->base.saved_num_so_targets != ~0);
 366    assert(ctx->base.saved_rs_state != INVALID_PTR);
 367 }
 368
 369 static void blitter_restore_vertex_states(struct blitter_context_priv *ctx)
 370 {
 371    struct pipe_context *pipe = ctx->base.pipe;
 372    unsigned i;
 373
 374    /* Vertex buffers. */
 375    pipe->set_vertex_buffers(pipe,
 376                             ctx->base.saved_num_vertex_buffers,
 377                             ctx->base.saved_vertex_buffers);
 378
 379    for (i = 0; i < ctx->base.saved_num_vertex_buffers; i++) {
 380       if (ctx->base.saved_vertex_buffers[i].buffer) {
 381          pipe_resource_reference(&ctx->base.saved_vertex_buffers[i].buffer,
 382                                  NULL);
 383       }
 384    }
 385    ctx->base.saved_num_vertex_buffers = ~0;
 386
 387    /* Vertex elements. */
 388    pipe->bind_vertex_elements_state(pipe, ctx->base.saved_velem_state);
 389    ctx->base.saved_velem_state = INVALID_PTR;
 390
 391    /* Vertex shader. */
 392    pipe->bind_vs_state(pipe, ctx->base.saved_vs);
 393    ctx->base.saved_vs = INVALID_PTR;
 394
 395    /* Geometry shader. */
 396    if (ctx->has_geometry_shader) {
 397       pipe->bind_gs_state(pipe, ctx->base.saved_gs);
 398       ctx->base.saved_gs = INVALID_PTR;
 399    }
 400
 401    /* Stream outputs. */
 402    if (ctx->has_stream_out) {
 403       pipe->set_stream_output_targets(pipe,
 404                                       ctx->base.saved_num_so_targets,
 405                                       ctx->base.saved_so_targets, ~0);
 406
 407       for (i = 0; i < ctx->base.saved_num_so_targets; i++)
 408          pipe_so_target_reference(&ctx->base.saved_so_targets[i], NULL);
 409
 410       ctx->base.saved_num_so_targets = ~0;
 411    }
 412
 413    /* Rasterizer. */
 414    pipe->bind_rasterizer_state(pipe, ctx->base.saved_rs_state);
 415    ctx->base.saved_rs_state = INVALID_PTR;
 416 }
 417
 418 static void blitter_check_saved_fragment_states(struct blitter_context_priv *ctx)
 419 {
 420    assert(ctx->base.saved_fs != INVALID_PTR);
 421    assert(ctx->base.saved_dsa_state != INVALID_PTR);
 422    assert(ctx->base.saved_blend_state != INVALID_PTR);
 423 }
 424
 425 static void blitter_restore_fragment_states(struct blitter_context_priv *ctx)
 426 {
 427    struct pipe_context *pipe = ctx->base.pipe;
 428
 429    /* Fragment shader. */
 430    pipe->bind_fs_state(pipe, ctx->base.saved_fs);
 431    ctx->base.saved_fs = INVALID_PTR;
 432
 433    /* Depth, stencil, alpha. */
 434    pipe->bind_depth_stencil_alpha_state(pipe, ctx->base.saved_dsa_state);
 435    ctx->base.saved_dsa_state = INVALID_PTR;
 436
 437    /* Blend state. */
 438    pipe->bind_blend_state(pipe, ctx->base.saved_blend_state);
 439    ctx->base.saved_blend_state = INVALID_PTR;
 440
 441    /* Sample mask. */
 442    if (ctx->base.is_sample_mask_saved) {
 443       pipe->set_sample_mask(pipe, ctx->base.saved_sample_mask);
 444       ctx->base.is_sample_mask_saved = FALSE;
 445    }
 446
 447    /* Miscellaneous states. */
 448    /* XXX check whether these are saved and whether they need to be restored
 449     * (depending on the operation) */
 450    pipe->set_stencil_ref(pipe, &ctx->base.saved_stencil_ref);
 451    pipe->set_viewport_state(pipe, &ctx->base.saved_viewport);
 452 }
 453
 454 static void blitter_check_saved_fb_state(struct blitter_context_priv *ctx)
 455 {
 456    assert(ctx->base.saved_fb_state.nr_cbufs != ~0);
 457 }
 458
 459 static void blitter_restore_fb_state(struct blitter_context_priv *ctx)
 460 {
 461    struct pipe_context *pipe = ctx->base.pipe;
 462
 463    pipe->set_framebuffer_state(pipe, &ctx->base.saved_fb_state);
 464    util_unreference_framebuffer_state(&ctx->base.saved_fb_state);
 465 }
 466
 467 static void blitter_check_saved_textures(struct blitter_context_priv *ctx)
 468 {
 469    assert(ctx->base.saved_num_sampler_states != ~0);
 470    assert(ctx->base.saved_num_sampler_views != ~0);
 471 }
 472
 473 static void blitter_restore_textures(struct blitter_context_priv *ctx)
 474 {
 475    struct pipe_context *pipe = ctx->base.pipe;
 476    unsigned i;
 477
 478    /* Fragment sampler states. */
 479    pipe->bind_fragment_sampler_states(pipe,
 480                                       ctx->base.saved_num_sampler_states,
 481                                       ctx->base.saved_sampler_states);
 482    ctx->base.saved_num_sampler_states = ~0;
 483
 484    /* Fragment sampler views. */
 485    pipe->set_fragment_sampler_views(pipe,
 486                                     ctx->base.saved_num_sampler_views,
 487                                     ctx->base.saved_sampler_views);
 488
 489    for (i = 0; i < ctx->base.saved_num_sampler_views; i++)
 490       pipe_sampler_view_reference(&ctx->base.saved_sampler_views[i], NULL);
 491
 492    ctx->base.saved_num_sampler_views = ~0;
 493 }
 494
 495 static void blitter_set_rectangle(struct blitter_context_priv *ctx,
 496                                   unsigned x1, unsigned y1,
 497                                   unsigned x2, unsigned y2,
 498                                   float depth)
 499 {
 500    int i;
 501
 502    /* set vertex positions */
 503    ctx->vertices[0][0][0] = (float)x1 / ctx->dst_width * 2.0f - 1.0f; /*v0.x*/
 504    ctx->vertices[0][0][1] = (float)y1 / ctx->dst_height * 2.0f - 1.0f; /*v0.y*/
 505
 506    ctx->vertices[1][0][0] = (float)x2 / ctx->dst_width * 2.0f - 1.0f; /*v1.x*/
 507    ctx->vertices[1][0][1] = (float)y1 / ctx->dst_height * 2.0f - 1.0f; /*v1.y*/
 508
 509    ctx->vertices[2][0][0] = (float)x2 / ctx->dst_width * 2.0f - 1.0f; /*v2.x*/
 510    ctx->vertices[2][0][1] = (float)y2 / ctx->dst_height * 2.0f - 1.0f; /*v2.y*/
 511
 512    ctx->vertices[3][0][0] = (float)x1 / ctx->dst_width * 2.0f - 1.0f; /*v3.x*/
 513    ctx->vertices[3][0][1] = (float)y2 / ctx->dst_height * 2.0f - 1.0f; /*v3.y*/
 514
 515    for (i = 0; i < 4; i++)
 516       ctx->vertices[i][0][2] = depth; /*z*/
 517
 518    /* viewport */
 519    ctx->viewport.scale[0] = 0.5f * ctx->dst_width;
 520    ctx->viewport.scale[1] = 0.5f * ctx->dst_height;
 521    ctx->viewport.scale[2] = 1.0f;
 522    ctx->viewport.scale[3] = 1.0f;
 523    ctx->viewport.translate[0] = 0.5f * ctx->dst_width;
 524    ctx->viewport.translate[1] = 0.5f * ctx->dst_height;
 525    ctx->viewport.translate[2] = 0.0f;
 526    ctx->viewport.translate[3] = 0.0f;
 527    ctx->base.pipe->set_viewport_state(ctx->base.pipe, &ctx->viewport);
 528 }
 529
 530 static void blitter_set_clear_color(struct blitter_context_priv *ctx,
 531                                     const union pipe_color_union *color)
 532 {
 533    int i;
 534
 535    if (color) {
 536       for (i = 0; i < 4; i++) {
 537          uint32_t *uiverts = (uint32_t *)ctx->vertices[i][1];
 538          uiverts[0] = color->ui[0];
 539          uiverts[1] = color->ui[1];
 540          uiverts[2] = color->ui[2];
 541          uiverts[3] = color->ui[3];
 542       }
 543    } else {
 544       for (i = 0; i < 4; i++) {
 545          ctx->vertices[i][1][0] = 0;
 546          ctx->vertices[i][1][1] = 0;
 547          ctx->vertices[i][1][2] = 0;
 548          ctx->vertices[i][1][3] = 0;
 549       }
 550    }
 551 }
 552
 553 static void get_texcoords(struct pipe_sampler_view *src,
 554                           unsigned src_width0, unsigned src_height0,
 555                           unsigned x1, unsigned y1,
 556                           unsigned x2, unsigned y2,
 557                           float out[4])
 558 {
 559    struct pipe_resource *tex = src->texture;
 560    unsigned level = src->u.tex.first_level;
 561    boolean normalized = tex->target != PIPE_TEXTURE_RECT &&
 562                         tex->nr_samples <= 1;
 563
 564    if (normalized) {
 565       out[0] = x1 / (float)u_minify(src_width0,  level);
 566       out[1] = y1 / (float)u_minify(src_height0, level);
 567       out[2] = x2 / (float)u_minify(src_width0,  level);
 568       out[3] = y2 / (float)u_minify(src_height0, level);
 569    } else {
 570       out[0] = x1;
 571       out[1] = y1;
 572       out[2] = x2;
 573       out[3] = y2;
 574    }
 575 }
 576
 577 static void set_texcoords_in_vertices(const float coord[4],
 578                                       float *out, unsigned stride)
 579 {
 580    out[0] = coord[0]; /*t0.s*/
 581    out[1] = coord[1]; /*t0.t*/
 582    out += stride;
 583    out[0] = coord[2]; /*t1.s*/
 584    out[1] = coord[1]; /*t1.t*/
 585    out += stride;
 586    out[0] = coord[2]; /*t2.s*/
 587    out[1] = coord[3]; /*t2.t*/
 588    out += stride;
 589    out[0] = coord[0]; /*t3.s*/
 590    out[1] = coord[3]; /*t3.t*/
 591 }
 592
 593 static void blitter_set_texcoords(struct blitter_context_priv *ctx,
 594                                   struct pipe_sampler_view *src,
 595                                   unsigned src_width0, unsigned src_height0,
 596                                   unsigned layer, unsigned sample,
 597                                   unsigned x1, unsigned y1,
 598                                   unsigned x2, unsigned y2)
 599 {
 600    unsigned i;
 601    float coord[4];
 602    float face_coord[4][2];
 603
 604    get_texcoords(src, src_width0, src_height0, x1, y1, x2, y2, coord);
 605
 606    if (src->texture->target == PIPE_TEXTURE_CUBE) {
 607       set_texcoords_in_vertices(coord, &face_coord[0][0], 2);
 608       util_map_texcoords2d_onto_cubemap(layer,
 609                                         /* pointer, stride in floats */
 610                                         &face_coord[0][0], 2,
 611                                         &ctx->vertices[0][1][0], 8);
 612    } else {
 613       set_texcoords_in_vertices(coord, &ctx->vertices[0][1][0], 8);
 614    }
 615
 616    /* Set the layer. */
 617    switch (src->texture->target) {
 618    case PIPE_TEXTURE_3D:
 619       {
 620          float r = layer / (float)u_minify(src->texture->depth0,
 621                                            src->u.tex.first_level);
 622          for (i = 0; i < 4; i++)
 623             ctx->vertices[i][1][2] = r; /*r*/
 624       }
 625       break;
 626
 627    case PIPE_TEXTURE_1D_ARRAY:
 628       for (i = 0; i < 4; i++)
 629          ctx->vertices[i][1][1] = layer; /*t*/
 630       break;
 631
 632    case PIPE_TEXTURE_2D_ARRAY:
 633       for (i = 0; i < 4; i++) {
 634          ctx->vertices[i][1][2] = layer;  /*r*/
 635          ctx->vertices[i][1][3] = sample; /*q*/
 636       }
 637       break;
 638
 639    case PIPE_TEXTURE_2D:
 640       for (i = 0; i < 4; i++) {
 641          ctx->vertices[i][1][2] = sample; /*r*/
 642       }
 643       break;
 644
 645    default:;
 646    }
 647 }
 648
 649 static void blitter_set_dst_dimensions(struct blitter_context_priv *ctx,
 650                                        unsigned width, unsigned height)
 651 {
 652    ctx->dst_width = width;
 653    ctx->dst_height = height;
 654 }
 655
 656 static INLINE
 657 void *blitter_get_fs_col(struct blitter_context_priv *ctx, unsigned num_cbufs,
 658                          boolean int_format)
 659 {
 660    struct pipe_context *pipe = ctx->base.pipe;
 661
 662    assert(num_cbufs <= PIPE_MAX_COLOR_BUFS);
 663
 664    if (int_format) {
 665       if (!ctx->fs_col_int[num_cbufs])
 666          ctx->fs_col_int[num_cbufs] =
 667             util_make_fragment_cloneinput_shader(pipe, num_cbufs,
 668                                                  TGSI_SEMANTIC_GENERIC,
 669                                                  TGSI_INTERPOLATE_CONSTANT);
 670       return ctx->fs_col_int[num_cbufs];
 671    } else {
 672       if (!ctx->fs_col[num_cbufs])
 673          ctx->fs_col[num_cbufs] =
 674             util_make_fragment_cloneinput_shader(pipe, num_cbufs,
 675                                                  TGSI_SEMANTIC_GENERIC,
 676                                                  TGSI_INTERPOLATE_LINEAR);
 677       return ctx->fs_col[num_cbufs];
 678    }
 679 }
 680
 681 static INLINE
 682 void *blitter_get_fs_texfetch_col(struct blitter_context_priv *ctx,
 683                                   struct pipe_resource *tex)
 684 {
 685    struct pipe_context *pipe = ctx->base.pipe;
 686
 687    assert(tex->target < PIPE_MAX_TEXTURE_TYPES);
 688
 689    if (tex->nr_samples > 1) {
 690       void **shader = &ctx->fs_texfetch_col_msaa[tex->target];
 691
 692       /* Create the fragment shader on-demand. */
 693       if (!*shader) {
 694          unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(tex->target,
 695                                                        tex->nr_samples);
 696
 697          *shader = util_make_fs_blit_msaa_color(pipe, tgsi_tex);
 698       }
 699
 700       return *shader;
 701    } else {
 702       void **shader = &ctx->fs_texfetch_col[tex->target];
 703
 704       /* Create the fragment shader on-demand. */
 705       if (!*shader) {
 706          unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(tex->target, 0);
 707
 708          *shader =
 709             util_make_fragment_tex_shader(pipe, tgsi_tex,
 710                                           TGSI_INTERPOLATE_LINEAR);
 711       }
 712
 713       return *shader;
 714    }
 715 }
 716
 717 static INLINE
 718 void *blitter_get_fs_texfetch_depth(struct blitter_context_priv *ctx,
 719                                     struct pipe_resource *tex)
 720 {
 721    struct pipe_context *pipe = ctx->base.pipe;
 722
 723    assert(tex->target < PIPE_MAX_TEXTURE_TYPES);
 724
 725    if (tex->nr_samples > 1) {
 726       void **shader = &ctx->fs_texfetch_depth_msaa[tex->target];
 727
 728       /* Create the fragment shader on-demand. */
 729       if (!*shader) {
 730          unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(tex->target,
 731                                                        tex->nr_samples);
 732
 733          *shader =
 734             util_make_fs_blit_msaa_depth(pipe, tgsi_tex);
 735       }
 736
 737       return *shader;
 738    } else {
 739       void **shader = &ctx->fs_texfetch_depth[tex->target];
 740
 741       /* Create the fragment shader on-demand. */
 742       if (!*shader) {
 743          unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(tex->target, 0);
 744
 745          *shader =
 746             util_make_fragment_tex_shader_writedepth(pipe, tgsi_tex,
 747                                                      TGSI_INTERPOLATE_LINEAR);
 748       }
 749
 750       return *shader;
 751    }
 752 }
 753
 754 static INLINE
 755 void *blitter_get_fs_texfetch_depthstencil(struct blitter_context_priv *ctx,
 756                                            struct pipe_resource *tex)
 757 {
 758    struct pipe_context *pipe = ctx->base.pipe;
 759
 760    assert(tex->target < PIPE_MAX_TEXTURE_TYPES);
 761
 762    if (tex->nr_samples > 1) {
 763       void **shader = &ctx->fs_texfetch_depthstencil_msaa[tex->target];
 764
 765       /* Create the fragment shader on-demand. */
 766       if (!*shader) {
 767          unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(tex->target,
 768                                                        tex->nr_samples);
 769
 770          *shader =
 771             util_make_fs_blit_msaa_depthstencil(pipe, tgsi_tex);
 772       }
 773
 774       return *shader;
 775    } else {
 776       void **shader = &ctx->fs_texfetch_depthstencil[tex->target];
 777
 778       /* Create the fragment shader on-demand. */
 779       if (!*shader) {
 780          unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(tex->target, 0);
 781
 782          *shader =
 783             util_make_fragment_tex_shader_writedepthstencil(pipe, tgsi_tex,
 784                                                      TGSI_INTERPOLATE_LINEAR);
 785       }
 786
 787       return *shader;
 788    }
 789 }
 790
 791 static INLINE
 792 void *blitter_get_fs_texfetch_stencil(struct blitter_context_priv *ctx,
 793                                       struct pipe_resource *tex)
 794 {
 795    struct pipe_context *pipe = ctx->base.pipe;
 796
 797    assert(tex->target < PIPE_MAX_TEXTURE_TYPES);
 798
 799    if (tex->nr_samples > 1) {
 800       void **shader = &ctx->fs_texfetch_stencil_msaa[tex->target];
 801
 802       /* Create the fragment shader on-demand. */
 803       if (!*shader) {
 804          unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(tex->target,
 805                                                        tex->nr_samples);
 806
 807          *shader =
 808             util_make_fs_blit_msaa_stencil(pipe, tgsi_tex);
 809       }
 810
 811       return *shader;
 812    } else {
 813       void **shader = &ctx->fs_texfetch_stencil[tex->target];
 814
 815       /* Create the fragment shader on-demand. */
 816       if (!*shader) {
 817          unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(tex->target, 0);
 818
 819          *shader =
 820             util_make_fragment_tex_shader_writestencil(pipe, tgsi_tex,
 821                                                        TGSI_INTERPOLATE_LINEAR);
 822       }
 823
 824       return *shader;
 825    }
 826 }
 827
 828 static void blitter_set_common_draw_rect_state(struct blitter_context_priv *ctx)
 829 {
 830    struct pipe_context *pipe = ctx->base.pipe;
 831
 832    pipe->bind_rasterizer_state(pipe, ctx->rs_state);
 833    pipe->bind_vs_state(pipe, ctx->vs);
 834    if (ctx->has_geometry_shader)
 835       pipe->bind_gs_state(pipe, NULL);
 836    if (ctx->has_stream_out)
 837       pipe->set_stream_output_targets(pipe, 0, NULL, 0);
 838 }
 839
 840 static void blitter_draw(struct blitter_context_priv *ctx,
 841                          unsigned x1, unsigned y1,
 842                          unsigned x2, unsigned y2,
 843                          float depth)
 844 {
 845    struct pipe_resource *buf = NULL;
 846    unsigned offset = 0;
 847
 848    blitter_set_rectangle(ctx, x1, y1, x2, y2, depth);
 849
 850    u_upload_data(ctx->upload, 0, sizeof(ctx->vertices), ctx->vertices,
 851                  &offset, &buf);
 852    u_upload_unmap(ctx->upload);
 853    util_draw_vertex_buffer(ctx->base.pipe, NULL, buf, offset,
 854                            PIPE_PRIM_TRIANGLE_FAN, 4, 2);
 855    pipe_resource_reference(&buf, NULL);
 856 }
 857
 858 void util_blitter_draw_rectangle(struct blitter_context *blitter,
 859                                  unsigned x1, unsigned y1,
 860                                  unsigned x2, unsigned y2,
 861                                  float depth,
 862                                  enum blitter_attrib_type type,
 863                                  const union pipe_color_union *attrib)
 864 {
 865    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
 866
 867    switch (type) {
 868       case UTIL_BLITTER_ATTRIB_COLOR:
 869          blitter_set_clear_color(ctx, attrib);
 870          break;
 871
 872       case UTIL_BLITTER_ATTRIB_TEXCOORD:
 873          set_texcoords_in_vertices(attrib->f, &ctx->vertices[0][1][0], 8);
 874          break;
 875
 876       default:;
 877    }
 878
 879    blitter_draw(ctx, x1, y1, x2, y2, depth);
 880 }
 881
 882 static void util_blitter_clear_custom(struct blitter_context *blitter,
 883                                       unsigned width, unsigned height,
 884                                       unsigned num_cbufs,
 885                                       unsigned clear_buffers,
 886                                       enum pipe_format cbuf_format,
 887                                       const union pipe_color_union *color,
 888                                       double depth, unsigned stencil,
 889                                       void *custom_blend, void *custom_dsa)
 890 {
 891    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
 892    struct pipe_context *pipe = ctx->base.pipe;
 893    struct pipe_stencil_ref sr = { { 0 } };
 894    boolean int_format = util_format_is_pure_integer(cbuf_format);
 895    assert(num_cbufs <= PIPE_MAX_COLOR_BUFS);
 896
 897    blitter_set_running_flag(ctx);
 898    blitter_check_saved_vertex_states(ctx);
 899    blitter_check_saved_fragment_states(ctx);
 900
 901    /* bind states */
 902    if (custom_blend) {
 903       pipe->bind_blend_state(pipe, custom_blend);
 904    } else if (clear_buffers & PIPE_CLEAR_COLOR) {
 905       pipe->bind_blend_state(pipe, ctx->blend_write_color);
 906    } else {
 907       pipe->bind_blend_state(pipe, ctx->blend_keep_color);
 908    }
 909
 910    if (custom_dsa) {
 911       pipe->bind_depth_stencil_alpha_state(pipe, custom_dsa);
 912    } else if ((clear_buffers & PIPE_CLEAR_DEPTHSTENCIL) == PIPE_CLEAR_DEPTHSTENCIL) {
 913       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_write_depth_stencil);
 914    } else if (clear_buffers & PIPE_CLEAR_DEPTH) {
 915       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_write_depth_keep_stencil);
 916    } else if (clear_buffers & PIPE_CLEAR_STENCIL) {
 917       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_write_stencil);
 918    } else {
 919       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
 920    }
 921
 922    sr.ref_value[0] = stencil & 0xff;
 923    pipe->set_stencil_ref(pipe, &sr);
 924
 925    if (util_format_is_pure_sint(cbuf_format)) {
 926       pipe->bind_vertex_elements_state(pipe, ctx->velem_sint_state);
 927    } else if (util_format_is_pure_uint(cbuf_format)) {
 928       pipe->bind_vertex_elements_state(pipe, ctx->velem_uint_state);
 929    } else {
 930       pipe->bind_vertex_elements_state(pipe, ctx->velem_state);
 931    }
 932    pipe->bind_fs_state(pipe, blitter_get_fs_col(ctx, num_cbufs, int_format));
 933    pipe->set_sample_mask(pipe, ~0);
 934
 935    blitter_set_common_draw_rect_state(ctx);
 936    blitter_set_dst_dimensions(ctx, width, height);
 937    blitter->draw_rectangle(blitter, 0, 0, width, height, depth,
 938                            UTIL_BLITTER_ATTRIB_COLOR, color);
 939
 940    blitter_restore_vertex_states(ctx);
 941    blitter_restore_fragment_states(ctx);
 942    blitter_unset_running_flag(ctx);
 943 }
 944
 945 void util_blitter_clear(struct blitter_context *blitter,
 946                         unsigned width, unsigned height,
 947                         unsigned num_cbufs,
 948                         unsigned clear_buffers,
 949                         enum pipe_format cbuf_format,
 950                         const union pipe_color_union *color,
 951                         double depth, unsigned stencil)
 952 {
 953    util_blitter_clear_custom(blitter, width, height, num_cbufs,
 954                              clear_buffers, cbuf_format, color, depth, stencil,
 955                              NULL, NULL);
 956 }
 957
 958 void util_blitter_custom_clear_depth(struct blitter_context *blitter,
 959                                      unsigned width, unsigned height,
 960                                      double depth, void *custom_dsa)
 961 {
 962     static const union pipe_color_union color;
 963     util_blitter_clear_custom(blitter, width, height, 0,
 964                               0, PIPE_FORMAT_NONE, &color, depth, 0, NULL, custom_dsa);
 965 }
 966
 967 static
 968 boolean is_overlap(unsigned dstx, unsigned dsty, unsigned dstz,
 969                    const struct pipe_box *srcbox)
 970 {
 971    struct pipe_box src = *srcbox;
 972
 973    if (src.width < 0) {
 974       src.x += src.width;
 975       src.width = -src.width;
 976    }
 977    if (src.height < 0) {
 978       src.y += src.height;
 979       src.height = -src.height;
 980    }
 981    if (src.depth < 0) {
 982       src.z += src.depth;
 983       src.depth = -src.depth;
 984    }
 985    return src.x < dstx+src.width && src.x+src.width > dstx &&
 986           src.y < dsty+src.height && src.y+src.height > dsty &&
 987           src.z < dstz+src.depth && src.z+src.depth > dstz;
 988 }
 989
 990 void util_blitter_default_dst_texture(struct pipe_surface *dst_templ,
 991                                       struct pipe_resource *dst,
 992                                       unsigned dstlevel,
 993                                       unsigned dstz,
 994                                       const struct pipe_box *srcbox)
 995 {
 996     memset(dst_templ, 0, sizeof(*dst_templ));
 997     dst_templ->format = dst->format;
 998     if (util_format_is_depth_or_stencil(dst->format)) {
 999         dst_templ->usage = PIPE_BIND_DEPTH_STENCIL;
1000     } else {
1001         dst_templ->usage = PIPE_BIND_RENDER_TARGET;
1002     }
1003     dst_templ->format = util_format_linear(dst->format);
1004     dst_templ->u.tex.level = dstlevel;
1005     dst_templ->u.tex.first_layer = dstz;
1006     dst_templ->u.tex.last_layer = dstz + srcbox->depth - 1;
1007 }
1008
1009 void util_blitter_default_src_texture(struct pipe_sampler_view *src_templ,
1010                                       struct pipe_resource *src,
1011                                       unsigned srclevel)
1012 {
1013     memset(src_templ, 0, sizeof(*src_templ));
1014     src_templ->format = util_format_linear(src->format);
1015     src_templ->u.tex.first_level = srclevel;
1016     src_templ->u.tex.last_level = srclevel;
1017     src_templ->u.tex.first_layer = 0;
1018     src_templ->u.tex.last_layer =
1019         src->target == PIPE_TEXTURE_3D ? u_minify(src->depth0, srclevel) - 1
1020                                        : src->array_size - 1;
1021     src_templ->swizzle_r = PIPE_SWIZZLE_RED;
1022     src_templ->swizzle_g = PIPE_SWIZZLE_GREEN;
1023     src_templ->swizzle_b = PIPE_SWIZZLE_BLUE;
1024     src_templ->swizzle_a = PIPE_SWIZZLE_ALPHA;
1025 }
1026
1027 boolean util_blitter_is_copy_supported(struct blitter_context *blitter,
1028                                        const struct pipe_resource *dst,
1029                                        const struct pipe_resource *src,
1030                                        unsigned mask)
1031 {
1032    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1033    struct pipe_screen *screen = ctx->base.pipe->screen;
1034
1035    if (dst) {
1036       unsigned bind;
1037       boolean is_stencil;
1038       const struct util_format_description *desc =
1039             util_format_description(dst->format);
1040
1041       is_stencil = util_format_has_stencil(desc);
1042
1043       /* Stencil export must be supported for stencil copy. */
1044       if ((mask & PIPE_MASK_S) && is_stencil && !ctx->has_stencil_export) {
1045          return FALSE;
1046       }
1047
1048       if (is_stencil || util_format_has_depth(desc))
1049          bind = PIPE_BIND_DEPTH_STENCIL;
1050       else
1051          bind = PIPE_BIND_RENDER_TARGET;
1052
1053       if (!screen->is_format_supported(screen, dst->format, dst->target,
1054                                        dst->nr_samples, bind)) {
1055          return FALSE;
1056       }
1057    }
1058
1059    if (src) {
1060       if (!screen->is_format_supported(screen, src->format, src->target,
1061                                  src->nr_samples, PIPE_BIND_SAMPLER_VIEW)) {
1062          return FALSE;
1063       }
1064
1065       /* Check stencil sampler support for stencil copy. */
1066       if (util_format_has_stencil(util_format_description(src->format))) {
1067          enum pipe_format stencil_format =
1068                util_format_stencil_only(src->format);
1069          assert(stencil_format != PIPE_FORMAT_NONE);
1070
1071          if (stencil_format != src->format &&
1072              !screen->is_format_supported(screen, stencil_format, src->target,
1073                                  src->nr_samples, PIPE_BIND_SAMPLER_VIEW)) {
1074             return FALSE;
1075          }
1076       }
1077    }
1078
1079    return TRUE;
1080 }
1081
1082 void util_blitter_copy_texture(struct blitter_context *blitter,
1083                                struct pipe_resource *dst,
1084                                unsigned dst_level, unsigned dst_sample_mask,
1085                                unsigned dstx, unsigned dsty, unsigned dstz,
1086                                struct pipe_resource *src,
1087                                unsigned src_level, unsigned src_sample,
1088                                const struct pipe_box *srcbox)
1089 {
1090    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1091    struct pipe_context *pipe = ctx->base.pipe;
1092    struct pipe_surface *dst_view, dst_templ;
1093    struct pipe_sampler_view src_templ, *src_view;
1094
1095    assert(dst && src);
1096    assert(src->target < PIPE_MAX_TEXTURE_TYPES);
1097
1098    /* Initialize the surface. */
1099    util_blitter_default_dst_texture(&dst_templ, dst, dst_level, dstz, srcbox);
1100    dst_view = pipe->create_surface(pipe, dst, &dst_templ);
1101
1102    /* Initialize the sampler view. */
1103    util_blitter_default_src_texture(&src_templ, src, src_level);
1104    src_view = pipe->create_sampler_view(pipe, src, &src_templ);
1105
1106    /* Copy. */
1107    util_blitter_copy_texture_view(blitter, dst_view, dst_sample_mask, dstx,
1108                                   dsty, src_view, src_sample, srcbox,
1109                                   src->width0, src->height0, PIPE_MASK_RGBAZS);
1110
1111    pipe_surface_reference(&dst_view, NULL);
1112    pipe_sampler_view_reference(&src_view, NULL);
1113 }
1114
1115 void util_blitter_copy_texture_view(struct blitter_context *blitter,
1116                                     struct pipe_surface *dst,
1117                                     unsigned dst_sample_mask,
1118                                     unsigned dstx, unsigned dsty,
1119                                     struct pipe_sampler_view *src,
1120                                     unsigned src_sample,
1121                                     const struct pipe_box *srcbox,
1122                                     unsigned src_width0, unsigned src_height0,
1123                                     unsigned mask)
1124 {
1125    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1126    struct pipe_context *pipe = ctx->base.pipe;
1127    struct pipe_framebuffer_state fb_state;
1128    enum pipe_texture_target src_target = src->texture->target;
1129    int abs_width = abs(srcbox->width);
1130    int abs_height = abs(srcbox->height);
1131    boolean blit_stencil, blit_depth;
1132    const struct util_format_description *src_desc =
1133          util_format_description(src->format);
1134
1135    blit_depth = util_format_has_depth(src_desc) && (mask & PIPE_MASK_Z);
1136    blit_stencil = util_format_has_stencil(src_desc) && (mask & PIPE_MASK_S);
1137
1138    /* If you want a fallback for stencil copies,
1139     * use util_blitter_copy_texture. */
1140    if (blit_stencil && !ctx->has_stencil_export) {
1141       blit_stencil = FALSE;
1142
1143       if (!blit_depth)
1144          return;
1145    }
1146
1147    /* Sanity checks. */
1148    if (dst->texture == src->texture &&
1149        dst->u.tex.level == src->u.tex.first_level) {
1150       assert(!is_overlap(dstx, dsty, 0, srcbox));
1151    }
1152    /* XXX should handle 3d regions */
1153    assert(srcbox->depth == 1);
1154
1155    /* Check whether the states are properly saved. */
1156    blitter_set_running_flag(ctx);
1157    blitter_check_saved_vertex_states(ctx);
1158    blitter_check_saved_fragment_states(ctx);
1159    blitter_check_saved_textures(ctx);
1160    blitter_check_saved_fb_state(ctx);
1161
1162    /* Initialize framebuffer state. */
1163    fb_state.width = dst->width;
1164    fb_state.height = dst->height;
1165
1166    if (blit_depth || blit_stencil) {
1167       pipe->bind_blend_state(pipe, ctx->blend_keep_color);
1168
1169       if (blit_depth && blit_stencil) {
1170          pipe->bind_depth_stencil_alpha_state(pipe,
1171                                               ctx->dsa_write_depth_stencil);
1172          pipe->bind_fs_state(pipe,
1173                blitter_get_fs_texfetch_depthstencil(ctx, src->texture));
1174       } else if (blit_depth) {
1175          pipe->bind_depth_stencil_alpha_state(pipe,
1176                                               ctx->dsa_write_depth_keep_stencil);
1177          pipe->bind_fs_state(pipe,
1178                blitter_get_fs_texfetch_depth(ctx, src->texture));
1179       } else { /* is_stencil */
1180          pipe->bind_depth_stencil_alpha_state(pipe,
1181                                               ctx->dsa_keep_depth_write_stencil);
1182          pipe->bind_fs_state(pipe,
1183                blitter_get_fs_texfetch_stencil(ctx, src->texture));
1184       }
1185
1186       fb_state.nr_cbufs = 0;
1187       fb_state.zsbuf = dst;
1188    } else {
1189       pipe->bind_blend_state(pipe, ctx->blend_write_color);
1190       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
1191       pipe->bind_fs_state(pipe,
1192             blitter_get_fs_texfetch_col(ctx, src->texture));
1193
1194       fb_state.nr_cbufs = 1;
1195       fb_state.cbufs[0] = dst;
1196       fb_state.zsbuf = 0;
1197    }
1198
1199    if (blit_depth && blit_stencil) {
1200       /* Setup two samplers, one for depth and the other one for stencil. */
1201       struct pipe_sampler_view templ;
1202       struct pipe_sampler_view *views[2];
1203       void *samplers[2] = {ctx->sampler_state, ctx->sampler_state};
1204
1205       templ = *src;
1206       templ.format = util_format_stencil_only(templ.format);
1207       assert(templ.format != PIPE_FORMAT_NONE);
1208
1209       views[0] = src;
1210       views[1] = pipe->create_sampler_view(pipe, src->texture, &templ);
1211
1212       pipe->set_fragment_sampler_views(pipe, 2, views);
1213       pipe->bind_fragment_sampler_states(pipe, 2, samplers);
1214
1215       pipe_sampler_view_reference(&views[1], NULL);
1216    } else if (blit_stencil) {
1217       /* Set a stencil-only sampler view for it not to sample depth instead. */
1218       struct pipe_sampler_view templ;
1219       struct pipe_sampler_view *view;
1220
1221       templ = *src;
1222       templ.format = util_format_stencil_only(templ.format);
1223       assert(templ.format != PIPE_FORMAT_NONE);
1224
1225       view = pipe->create_sampler_view(pipe, src->texture, &templ);
1226
1227       pipe->set_fragment_sampler_views(pipe, 1, &view);
1228       pipe->bind_fragment_sampler_states(pipe, 1, &ctx->sampler_state);
1229
1230       pipe_sampler_view_reference(&view, NULL);
1231    } else {
1232       pipe->set_fragment_sampler_views(pipe, 1, &src);
1233       pipe->bind_fragment_sampler_states(pipe, 1, &ctx->sampler_state);
1234    }
1235
1236    pipe->bind_vertex_elements_state(pipe, ctx->velem_state);
1237    pipe->set_framebuffer_state(pipe, &fb_state);
1238    pipe->set_sample_mask(pipe, dst_sample_mask);
1239
1240    blitter_set_common_draw_rect_state(ctx);
1241    blitter_set_dst_dimensions(ctx, dst->width, dst->height);
1242
1243    if ((src_target == PIPE_TEXTURE_1D ||
1244         src_target == PIPE_TEXTURE_2D ||
1245         src_target == PIPE_TEXTURE_RECT) &&
1246        src->texture->nr_samples <= 1) {
1247       /* Draw the quad with the draw_rectangle callback. */
1248
1249       /* Set texture coordinates. - use a pipe color union
1250        * for interface purposes.
1251        * XXX pipe_color_union is a wrong name since we use that to set
1252        * texture coordinates too.
1253        */
1254       union pipe_color_union coord;
1255       get_texcoords(src, src_width0, src_height0, srcbox->x, srcbox->y,
1256                     srcbox->x+srcbox->width, srcbox->y+srcbox->height, coord.f);
1257
1258       /* Draw. */
1259       blitter->draw_rectangle(blitter, dstx, dsty, dstx+abs_width, dsty+abs_height, 0,
1260                               UTIL_BLITTER_ATTRIB_TEXCOORD, &coord);
1261    } else {
1262       /* Draw the quad with the generic codepath. */
1263       blitter_set_texcoords(ctx, src, src_width0, src_height0, srcbox->z,
1264                             src_sample,
1265                             srcbox->x, srcbox->y,
1266                             srcbox->x + srcbox->width, srcbox->y + srcbox->height);
1267       blitter_draw(ctx, dstx, dsty, dstx+abs_width, dsty+abs_height, 0);
1268    }
1269
1270    blitter_restore_vertex_states(ctx);
1271    blitter_restore_fragment_states(ctx);
1272    blitter_restore_textures(ctx);
1273    blitter_restore_fb_state(ctx);
1274    blitter_unset_running_flag(ctx);
1275 }
1276
1277 /* Clear a region of a color surface to a constant value. */
1278 void util_blitter_clear_render_target(struct blitter_context *blitter,
1279                                       struct pipe_surface *dstsurf,
1280                                       const union pipe_color_union *color,
1281                                       unsigned dstx, unsigned dsty,
1282                                       unsigned width, unsigned height)
1283 {
1284    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1285    struct pipe_context *pipe = ctx->base.pipe;
1286    struct pipe_framebuffer_state fb_state;
1287
1288    assert(dstsurf->texture);
1289    if (!dstsurf->texture)
1290       return;
1291
1292    /* check the saved state */
1293    blitter_set_running_flag(ctx);
1294    blitter_check_saved_vertex_states(ctx);
1295    blitter_check_saved_fragment_states(ctx);
1296    blitter_check_saved_fb_state(ctx);
1297
1298    /* bind states */
1299    pipe->bind_blend_state(pipe, ctx->blend_write_color);
1300    pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
1301    pipe->bind_fs_state(pipe, blitter_get_fs_col(ctx, 1, FALSE));
1302    pipe->bind_vertex_elements_state(pipe, ctx->velem_state);
1303
1304    /* set a framebuffer state */
1305    fb_state.width = dstsurf->width;
1306    fb_state.height = dstsurf->height;
1307    fb_state.nr_cbufs = 1;
1308    fb_state.cbufs[0] = dstsurf;
1309    fb_state.zsbuf = 0;
1310    pipe->set_framebuffer_state(pipe, &fb_state);
1311    pipe->set_sample_mask(pipe, ~0);
1312
1313    blitter_set_common_draw_rect_state(ctx);
1314    blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
1315    blitter->draw_rectangle(blitter, dstx, dsty, dstx+width, dsty+height, 0,
1316                            UTIL_BLITTER_ATTRIB_COLOR, color);
1317
1318    blitter_restore_vertex_states(ctx);
1319    blitter_restore_fragment_states(ctx);
1320    blitter_restore_fb_state(ctx);
1321    blitter_unset_running_flag(ctx);
1322 }
1323
1324 /* Clear a region of a depth stencil surface. */
1325 void util_blitter_clear_depth_stencil(struct blitter_context *blitter,
1326                                       struct pipe_surface *dstsurf,
1327                                       unsigned clear_flags,
1328                                       double depth,
1329                                       unsigned stencil,
1330                                       unsigned dstx, unsigned dsty,
1331                                       unsigned width, unsigned height)
1332 {
1333    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1334    struct pipe_context *pipe = ctx->base.pipe;
1335    struct pipe_framebuffer_state fb_state;
1336    struct pipe_stencil_ref sr = { { 0 } };
1337
1338    assert(dstsurf->texture);
1339    if (!dstsurf->texture)
1340       return;
1341
1342    /* check the saved state */
1343    blitter_set_running_flag(ctx);
1344    blitter_check_saved_vertex_states(ctx);
1345    blitter_check_saved_fragment_states(ctx);
1346    blitter_check_saved_fb_state(ctx);
1347
1348    /* bind states */
1349    pipe->bind_blend_state(pipe, ctx->blend_keep_color);
1350    if ((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) == PIPE_CLEAR_DEPTHSTENCIL) {
1351       sr.ref_value[0] = stencil & 0xff;
1352       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_write_depth_stencil);
1353       pipe->set_stencil_ref(pipe, &sr);
1354    }
1355    else if (clear_flags & PIPE_CLEAR_DEPTH) {
1356       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_write_depth_keep_stencil);
1357    }
1358    else if (clear_flags & PIPE_CLEAR_STENCIL) {
1359       sr.ref_value[0] = stencil & 0xff;
1360       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_write_stencil);
1361       pipe->set_stencil_ref(pipe, &sr);
1362    }
1363    else
1364       /* hmm that should be illegal probably, or make it a no-op somewhere */
1365       pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
1366
1367    pipe->bind_fs_state(pipe, blitter_get_fs_col(ctx, 0, FALSE));
1368    pipe->bind_vertex_elements_state(pipe, ctx->velem_state);
1369
1370    /* set a framebuffer state */
1371    fb_state.width = dstsurf->width;
1372    fb_state.height = dstsurf->height;
1373    fb_state.nr_cbufs = 0;
1374    fb_state.cbufs[0] = 0;
1375    fb_state.zsbuf = dstsurf;
1376    pipe->set_framebuffer_state(pipe, &fb_state);
1377    pipe->set_sample_mask(pipe, ~0);
1378
1379    blitter_set_common_draw_rect_state(ctx);
1380    blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
1381    blitter->draw_rectangle(blitter, dstx, dsty, dstx+width, dsty+height, depth,
1382                            UTIL_BLITTER_ATTRIB_NONE, NULL);
1383
1384    blitter_restore_vertex_states(ctx);
1385    blitter_restore_fragment_states(ctx);
1386    blitter_restore_fb_state(ctx);
1387    blitter_unset_running_flag(ctx);
1388 }
1389
1390 /* draw a rectangle across a region using a custom dsa stage - for r600g */
1391 void util_blitter_custom_depth_stencil(struct blitter_context *blitter,
1392                                        struct pipe_surface *zsurf,
1393                                        struct pipe_surface *cbsurf,
1394                                        unsigned sample_mask,
1395                                        void *dsa_stage, float depth)
1396 {
1397    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1398    struct pipe_context *pipe = ctx->base.pipe;
1399    struct pipe_framebuffer_state fb_state;
1400
1401    assert(zsurf->texture);
1402    if (!zsurf->texture)
1403       return;
1404
1405    /* check the saved state */
1406    blitter_set_running_flag(ctx);
1407    blitter_check_saved_vertex_states(ctx);
1408    blitter_check_saved_fragment_states(ctx);
1409    blitter_check_saved_fb_state(ctx);
1410
1411    /* bind states */
1412    pipe->bind_blend_state(pipe, ctx->blend_write_color);
1413    pipe->bind_depth_stencil_alpha_state(pipe, dsa_stage);
1414    pipe->bind_fs_state(pipe, blitter_get_fs_col(ctx, 0, FALSE));
1415    pipe->bind_vertex_elements_state(pipe, ctx->velem_state);
1416
1417    /* set a framebuffer state */
1418    fb_state.width = zsurf->width;
1419    fb_state.height = zsurf->height;
1420    fb_state.nr_cbufs = 1;
1421    if (cbsurf) {
1422            fb_state.cbufs[0] = cbsurf;
1423            fb_state.nr_cbufs = 1;
1424    } else {
1425            fb_state.cbufs[0] = NULL;
1426            fb_state.nr_cbufs = 0;
1427    }
1428    fb_state.zsbuf = zsurf;
1429    pipe->set_framebuffer_state(pipe, &fb_state);
1430    pipe->set_sample_mask(pipe, sample_mask);
1431
1432    blitter_set_common_draw_rect_state(ctx);
1433    blitter_set_dst_dimensions(ctx, zsurf->width, zsurf->height);
1434    blitter->draw_rectangle(blitter, 0, 0, zsurf->width, zsurf->height, depth,
1435                            UTIL_BLITTER_ATTRIB_NONE, NULL);
1436
1437    blitter_restore_vertex_states(ctx);
1438    blitter_restore_fragment_states(ctx);
1439    blitter_restore_fb_state(ctx);
1440    blitter_unset_running_flag(ctx);
1441 }
1442
1443 void util_blitter_copy_buffer(struct blitter_context *blitter,
1444                               struct pipe_resource *dst,
1445                               unsigned dstx,
1446                               struct pipe_resource *src,
1447                               unsigned srcx,
1448                               unsigned size)
1449 {
1450    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1451    struct pipe_context *pipe = ctx->base.pipe;
1452    struct pipe_vertex_buffer vb;
1453    struct pipe_stream_output_target *so_target;
1454
1455    if (srcx >= src->width0 ||
1456        dstx >= dst->width0) {
1457       return;
1458    }
1459    if (srcx + size > src->width0) {
1460       size = src->width0 - srcx;
1461    }
1462    if (dstx + size > dst->width0) {
1463       size = dst->width0 - dstx;
1464    }
1465
1466    /* Drivers not capable of Stream Out should not call this function
1467     * in the first place. */
1468    assert(ctx->has_stream_out);
1469
1470    /* Some alignment is required. */
1471    if (srcx % 4 != 0 || dstx % 4 != 0 || size % 4 != 0 ||
1472        !ctx->has_stream_out) {
1473       struct pipe_box box;
1474       u_box_1d(srcx, size, &box);
1475       util_resource_copy_region(pipe, dst, 0, dstx, 0, 0, src, 0, &box);
1476       return;
1477    }
1478
1479    blitter_set_running_flag(ctx);
1480    blitter_check_saved_vertex_states(ctx);
1481
1482    vb.buffer = src;
1483    vb.buffer_offset = srcx;
1484    vb.stride = 4;
1485
1486    pipe->set_vertex_buffers(pipe, 1, &vb);
1487    pipe->bind_vertex_elements_state(pipe, ctx->velem_state_readbuf);
1488    pipe->bind_vs_state(pipe, ctx->vs_pos_only);
1489    if (ctx->has_geometry_shader)
1490       pipe->bind_gs_state(pipe, NULL);
1491    pipe->bind_rasterizer_state(pipe, ctx->rs_discard_state);
1492
1493    so_target = pipe->create_stream_output_target(pipe, dst, dstx, size);
1494    pipe->set_stream_output_targets(pipe, 1, &so_target, 0);
1495
1496    util_draw_arrays(pipe, PIPE_PRIM_POINTS, 0, size / 4);
1497
1498    blitter_restore_vertex_states(ctx);
1499    blitter_unset_running_flag(ctx);
1500    pipe_so_target_reference(&so_target, NULL);
1501 }
1502
1503 /* probably radeon specific */
1504 void util_blitter_custom_resolve_color(struct blitter_context *blitter,
1505                                        struct pipe_resource *dst,
1506                                        unsigned dst_level,
1507                                        unsigned dst_layer,
1508                                        struct pipe_resource *src,
1509                                        unsigned src_layer,
1510                                        unsigned sample_mask,
1511                                        void *custom_blend)
1512 {
1513    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1514    struct pipe_context *pipe = ctx->base.pipe;
1515    struct pipe_framebuffer_state fb_state;
1516    struct pipe_surface *srcsurf, *dstsurf, surf_tmpl;
1517
1518    blitter_set_running_flag(ctx);
1519    blitter_check_saved_vertex_states(ctx);
1520    blitter_check_saved_fragment_states(ctx);
1521
1522    /* bind states */
1523    pipe->bind_blend_state(pipe, custom_blend);
1524    pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
1525    pipe->bind_vertex_elements_state(pipe, ctx->velem_state);
1526    pipe->bind_fs_state(pipe, blitter_get_fs_col(ctx, 1, FALSE));
1527    pipe->set_sample_mask(pipe, sample_mask);
1528
1529    memset(&surf_tmpl, 0, sizeof(surf_tmpl));
1530    surf_tmpl.format = dst->format;
1531    surf_tmpl.u.tex.level = dst_level;
1532    surf_tmpl.u.tex.first_layer = dst_layer;
1533    surf_tmpl.u.tex.last_layer = dst_layer;
1534    surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
1535
1536    dstsurf = pipe->create_surface(pipe, dst, &surf_tmpl);
1537
1538    surf_tmpl.u.tex.level = 0;
1539    surf_tmpl.u.tex.first_layer = src_layer;
1540    surf_tmpl.u.tex.last_layer = src_layer;
1541
1542    srcsurf = pipe->create_surface(pipe, src, &surf_tmpl);
1543
1544    /* set a framebuffer state */
1545    fb_state.width = src->width0;
1546    fb_state.height = src->height0;
1547    fb_state.nr_cbufs = 2;
1548    fb_state.cbufs[0] = srcsurf;
1549    fb_state.cbufs[1] = dstsurf;
1550    fb_state.zsbuf = NULL;
1551    pipe->set_framebuffer_state(pipe, &fb_state);
1552
1553    blitter_set_common_draw_rect_state(ctx);
1554    blitter_set_dst_dimensions(ctx, src->width0, src->height0);
1555    blitter->draw_rectangle(blitter, 0, 0, src->width0, src->height0,
1556                            0, 0, NULL);
1557    blitter_restore_fb_state(ctx);
1558    blitter_restore_vertex_states(ctx);
1559    blitter_restore_fragment_states(ctx);
1560    blitter_unset_running_flag(ctx);
1561
1562    pipe_surface_reference(&srcsurf, NULL);
1563    pipe_surface_reference(&dstsurf, NULL);
1564 }
1565
1566 void util_blitter_custom_color(struct blitter_context *blitter,
1567                                struct pipe_surface *dstsurf,
1568                                void *custom_blend)
1569 {
1570    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
1571    struct pipe_context *pipe = ctx->base.pipe;
1572    struct pipe_framebuffer_state fb_state;
1573
1574    assert(dstsurf->texture);
1575    if (!dstsurf->texture)
1576       return;
1577
1578    /* check the saved state */
1579    blitter_set_running_flag(ctx);
1580    blitter_check_saved_vertex_states(ctx);
1581    blitter_check_saved_fragment_states(ctx);
1582    blitter_check_saved_fb_state(ctx);
1583
1584    /* bind states */
1585    pipe->bind_blend_state(pipe, custom_blend);
1586    pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
1587    pipe->bind_fs_state(pipe, blitter_get_fs_col(ctx, 1, FALSE));
1588    pipe->bind_vertex_elements_state(pipe, ctx->velem_state);
1589    pipe->set_sample_mask(pipe, (1ull << MAX2(1, dstsurf->texture->nr_samples)) - 1);
1590
1591    /* set a framebuffer state */
1592    fb_state.width = dstsurf->width;
1593    fb_state.height = dstsurf->height;
1594    fb_state.nr_cbufs = 1;
1595    fb_state.cbufs[0] = dstsurf;
1596    fb_state.zsbuf = 0;
1597    pipe->set_framebuffer_state(pipe, &fb_state);
1598    pipe->set_sample_mask(pipe, ~0);
1599
1600    blitter_set_common_draw_rect_state(ctx);
1601    blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
1602    blitter->draw_rectangle(blitter, 0, 0, dstsurf->width, dstsurf->height,
1603                            0, 0, NULL);
1604
1605    blitter_restore_vertex_states(ctx);
1606    blitter_restore_fragment_states(ctx);
1607    blitter_restore_fb_state(ctx);
1608    blitter_unset_running_flag(ctx);
1609 }