src/gallium/drivers/lima/lima_draw.c

   1 /*
   2  * Copyright (c) 2011-2013 Luc Verhaegen <libv@skynet.be>
   3  * Copyright (c) 2017-2019 Lima Project
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  */
  25
  26 #include "util/format/u_format.h"
  27 #include "util/u_debug.h"
  28 #include "util/u_half.h"
  29 #include "util/u_helpers.h"
  30 #include "util/u_inlines.h"
  31 #include "util/u_pack_color.h"
  32 #include "util/u_split_draw.h"
  33 #include "util/u_upload_mgr.h"
  34 #include "util/u_prim.h"
  35 #include "util/u_vbuf.h"
  36 #include "util/hash_table.h"
  37
  38 #include "lima_context.h"
  39 #include "lima_screen.h"
  40 #include "lima_resource.h"
  41 #include "lima_program.h"
  42 #include "lima_bo.h"
  43 #include "lima_submit.h"
  44 #include "lima_texture.h"
  45 #include "lima_util.h"
  46 #include "lima_gpu.h"
  47
  48 #include <drm-uapi/lima_drm.h>
  49
  50 static bool
  51 lima_is_scissor_zero(struct lima_context *ctx)
  52 {
  53    if (!ctx->rasterizer || !ctx->rasterizer->base.scissor)
  54       return false;
  55
  56    struct pipe_scissor_state *scissor = &ctx->scissor;
  57    return
  58       scissor->minx == scissor->maxx
  59       && scissor->miny == scissor->maxy;
  60 }
  61
  62 static void
  63 lima_update_submit_wb(struct lima_context *ctx, unsigned buffers)
  64 {
  65    struct lima_submit *submit = lima_submit_get(ctx);
  66    struct lima_context_framebuffer *fb = &ctx->framebuffer;
  67
  68    /* add to submit when the buffer is dirty and resolve is clear (not added before) */
  69    if (fb->base.nr_cbufs && (buffers & PIPE_CLEAR_COLOR0) &&
  70        !(ctx->resolve & PIPE_CLEAR_COLOR0)) {
  71       struct lima_resource *res = lima_resource(fb->base.cbufs[0]->texture);
  72       lima_flush_submit_accessing_bo(ctx, res->bo, true);
  73       _mesa_hash_table_insert(ctx->write_submits, &res->base, submit);
  74       lima_submit_add_bo(submit, LIMA_PIPE_PP, res->bo, LIMA_SUBMIT_BO_WRITE);
  75    }
  76
  77    /* add to submit when the buffer is dirty and resolve is clear (not added before) */
  78    if (fb->base.zsbuf && (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL)) &&
  79        !(ctx->resolve & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))) {
  80       struct lima_resource *res = lima_resource(fb->base.zsbuf->texture);
  81       lima_flush_submit_accessing_bo(ctx, res->bo, true);
  82       _mesa_hash_table_insert(ctx->write_submits, &res->base, submit);
  83       lima_submit_add_bo(submit, LIMA_PIPE_PP, res->bo, LIMA_SUBMIT_BO_WRITE);
  84    }
  85
  86    ctx->resolve |= buffers;
  87 }
  88
  89 static void
  90 lima_damage_rect_union(struct lima_context *ctx, unsigned minx, unsigned maxx, unsigned miny, unsigned maxy)
  91 {
  92    ctx->damage_rect.minx = MIN2(ctx->damage_rect.minx, minx);
  93    ctx->damage_rect.miny = MIN2(ctx->damage_rect.miny, miny);
  94    ctx->damage_rect.maxx = MAX2(ctx->damage_rect.maxx, maxx);
  95    ctx->damage_rect.maxy = MAX2(ctx->damage_rect.maxy, maxy);
  96 }
  97
  98 static void
  99 lima_clear(struct pipe_context *pctx, unsigned buffers,
 100            const union pipe_color_union *color, double depth, unsigned stencil)
 101 {
 102    struct lima_context *ctx = lima_context(pctx);
 103
 104    lima_flush(ctx);
 105
 106    lima_update_submit_wb(ctx, buffers);
 107
 108    /* no need to reload if cleared */
 109    if (ctx->framebuffer.base.nr_cbufs && (buffers & PIPE_CLEAR_COLOR0)) {
 110       struct lima_surface *surf = lima_surface(ctx->framebuffer.base.cbufs[0]);
 111       surf->reload = false;
 112    }
 113
 114    struct lima_context_clear *clear = &ctx->clear;
 115    clear->buffers = buffers;
 116
 117    if (buffers & PIPE_CLEAR_COLOR0) {
 118       clear->color_8pc =
 119          ((uint32_t)float_to_ubyte(color->f[3]) << 24) |
 120          ((uint32_t)float_to_ubyte(color->f[2]) << 16) |
 121          ((uint32_t)float_to_ubyte(color->f[1]) << 8) |
 122          float_to_ubyte(color->f[0]);
 123
 124       clear->color_16pc =
 125          ((uint64_t)float_to_ushort(color->f[3]) << 48) |
 126          ((uint64_t)float_to_ushort(color->f[2]) << 32) |
 127          ((uint64_t)float_to_ushort(color->f[1]) << 16) |
 128          float_to_ushort(color->f[0]);
 129    }
 130
 131    if (buffers & PIPE_CLEAR_DEPTH)
 132       clear->depth = util_pack_z(PIPE_FORMAT_Z24X8_UNORM, depth);
 133
 134    if (buffers & PIPE_CLEAR_STENCIL)
 135       clear->stencil = stencil;
 136
 137    ctx->dirty |= LIMA_CONTEXT_DIRTY_CLEAR;
 138
 139    lima_damage_rect_union(ctx, 0, ctx->framebuffer.base.width,
 140                                0, ctx->framebuffer.base.height);
 141 }
 142
 143 enum lima_attrib_type {
 144    LIMA_ATTRIB_FLOAT = 0x000,
 145    /* todo: find out what lives here. */
 146    LIMA_ATTRIB_I16   = 0x004,
 147    LIMA_ATTRIB_U16   = 0x005,
 148    LIMA_ATTRIB_I8    = 0x006,
 149    LIMA_ATTRIB_U8    = 0x007,
 150    LIMA_ATTRIB_I8N   = 0x008,
 151    LIMA_ATTRIB_U8N   = 0x009,
 152    LIMA_ATTRIB_I16N  = 0x00A,
 153    LIMA_ATTRIB_U16N  = 0x00B,
 154    /* todo: where is the 32 int */
 155    /* todo: find out what lives here. */
 156    LIMA_ATTRIB_FIXED = 0x101
 157 };
 158
 159 static enum lima_attrib_type
 160 lima_pipe_format_to_attrib_type(enum pipe_format format)
 161 {
 162    const struct util_format_description *desc = util_format_description(format);
 163    int i = util_format_get_first_non_void_channel(format);
 164    const struct util_format_channel_description *c = desc->channel + i;
 165
 166    switch (c->type) {
 167    case UTIL_FORMAT_TYPE_FLOAT:
 168       return LIMA_ATTRIB_FLOAT;
 169    case UTIL_FORMAT_TYPE_FIXED:
 170       return LIMA_ATTRIB_FIXED;
 171    case UTIL_FORMAT_TYPE_SIGNED:
 172       if (c->size == 8) {
 173          if (c->normalized)
 174             return LIMA_ATTRIB_I8N;
 175          else
 176             return LIMA_ATTRIB_I8;
 177       }
 178       else if (c->size == 16) {
 179          if (c->normalized)
 180             return LIMA_ATTRIB_I16N;
 181          else
 182             return LIMA_ATTRIB_I16;
 183       }
 184       break;
 185    case UTIL_FORMAT_TYPE_UNSIGNED:
 186       if (c->size == 8) {
 187          if (c->normalized)
 188             return LIMA_ATTRIB_U8N;
 189          else
 190             return LIMA_ATTRIB_U8;
 191       }
 192       else if (c->size == 16) {
 193          if (c->normalized)
 194             return LIMA_ATTRIB_U16N;
 195          else
 196             return LIMA_ATTRIB_U16;
 197       }
 198       break;
 199    }
 200
 201    return LIMA_ATTRIB_FLOAT;
 202 }
 203
 204 static void
 205 lima_pack_vs_cmd(struct lima_context *ctx, const struct pipe_draw_info *info)
 206 {
 207    VS_CMD_BEGIN(&ctx->vs_cmd_array, 24);
 208
 209    if (!info->index_size) {
 210       VS_CMD_ARRAYS_SEMAPHORE_BEGIN_1();
 211       VS_CMD_ARRAYS_SEMAPHORE_BEGIN_2();
 212    }
 213
 214    int uniform_size = ctx->vs->uniform_pending_offset + ctx->vs->constant_size + 32;
 215    VS_CMD_UNIFORMS_ADDRESS(
 216       lima_ctx_buff_va(ctx, lima_ctx_buff_gp_uniform),
 217       align(uniform_size, 16));
 218
 219    VS_CMD_SHADER_ADDRESS(ctx->vs->bo->va, ctx->vs->shader_size);
 220    VS_CMD_SHADER_INFO(ctx->vs->prefetch, ctx->vs->shader_size);
 221
 222    int num_outputs = ctx->vs->num_outputs;
 223    int num_attributes = ctx->vertex_elements->num_elements;
 224    VS_CMD_VARYING_ATTRIBUTE_COUNT(num_outputs, MAX2(1, num_attributes));
 225
 226    VS_CMD_UNKNOWN1();
 227
 228    VS_CMD_ATTRIBUTES_ADDRESS(
 229       lima_ctx_buff_va(ctx, lima_ctx_buff_gp_attribute_info),
 230       MAX2(1, num_attributes));
 231
 232    VS_CMD_VARYINGS_ADDRESS(
 233       lima_ctx_buff_va(ctx, lima_ctx_buff_gp_varying_info),
 234       num_outputs);
 235
 236    unsigned num = info->index_size ? (ctx->max_index - ctx->min_index + 1) : info->count;
 237    VS_CMD_DRAW(num, info->index_size);
 238
 239    VS_CMD_UNKNOWN2();
 240
 241    VS_CMD_ARRAYS_SEMAPHORE_END(info->index_size);
 242
 243    VS_CMD_END();
 244 }
 245
 246 static void
 247 lima_pack_plbu_cmd(struct lima_context *ctx, const struct pipe_draw_info *info)
 248 {
 249    struct lima_context_framebuffer *fb = &ctx->framebuffer;
 250    struct lima_vs_shader_state *vs = ctx->vs;
 251    unsigned minx, maxx, miny, maxy;
 252
 253    /* If it's zero scissor, we skip adding all other commands */
 254    if (lima_is_scissor_zero(ctx))
 255       return;
 256
 257    PLBU_CMD_BEGIN(&ctx->plbu_cmd_array, 32);
 258
 259    PLBU_CMD_VIEWPORT_LEFT(fui(ctx->viewport.left));
 260    PLBU_CMD_VIEWPORT_RIGHT(fui(ctx->viewport.right));
 261    PLBU_CMD_VIEWPORT_BOTTOM(fui(ctx->viewport.bottom));
 262    PLBU_CMD_VIEWPORT_TOP(fui(ctx->viewport.top));
 263
 264    if (!info->index_size)
 265       PLBU_CMD_ARRAYS_SEMAPHORE_BEGIN();
 266
 267    int cf = ctx->rasterizer->base.cull_face;
 268    int ccw = ctx->rasterizer->base.front_ccw;
 269    uint32_t cull = 0;
 270    bool force_point_size = false;
 271
 272    if (cf != PIPE_FACE_NONE) {
 273       if (cf & PIPE_FACE_FRONT)
 274          cull |= ccw ? 0x00040000 : 0x00020000;
 275       if (cf & PIPE_FACE_BACK)
 276          cull |= ccw ? 0x00020000 : 0x00040000;
 277    }
 278
 279    /* Specify point size with PLBU command if shader doesn't write */
 280    if (info->mode == PIPE_PRIM_POINTS && ctx->vs->point_size_idx == -1)
 281       force_point_size = true;
 282
 283    /* Specify line width with PLBU command for lines */
 284    if (info->mode > PIPE_PRIM_POINTS && info->mode < PIPE_PRIM_TRIANGLES)
 285       force_point_size = true;
 286
 287    PLBU_CMD_PRIMITIVE_SETUP(force_point_size, cull, info->index_size);
 288
 289    PLBU_CMD_RSW_VERTEX_ARRAY(
 290       lima_ctx_buff_va(ctx, lima_ctx_buff_pp_plb_rsw),
 291       ctx->gp_output->va);
 292
 293    /* TODO
 294     * - we should set it only for the first draw that enabled the scissor and for
 295     *   latter draw only if scissor is dirty
 296     */
 297    if (ctx->rasterizer->base.scissor) {
 298       struct pipe_scissor_state *scissor = &ctx->scissor;
 299       minx = scissor->minx;
 300       maxx = scissor->maxx;
 301       miny = scissor->miny;
 302       maxy = scissor->maxy;
 303    } else {
 304       minx = 0;
 305       maxx = fb->base.width;
 306       miny = 0;
 307       maxy = fb->base.height;
 308    }
 309
 310    minx = MAX2(minx, ctx->viewport.left);
 311    maxx = MIN2(maxx, ctx->viewport.right);
 312    miny = MAX2(miny, ctx->viewport.bottom);
 313    maxy = MIN2(maxy, ctx->viewport.top);
 314
 315    PLBU_CMD_SCISSORS(minx, maxx, miny, maxy);
 316    lima_damage_rect_union(ctx, minx, maxx, miny, maxy);
 317
 318    PLBU_CMD_UNKNOWN1();
 319
 320    PLBU_CMD_DEPTH_RANGE_NEAR(fui(ctx->viewport.near));
 321    PLBU_CMD_DEPTH_RANGE_FAR(fui(ctx->viewport.far));
 322
 323    if ((info->mode == PIPE_PRIM_POINTS && ctx->vs->point_size_idx == -1) ||
 324        ((info->mode >= PIPE_PRIM_LINES) && (info->mode < PIPE_PRIM_TRIANGLES)))
 325    {
 326       uint32_t v = info->mode == PIPE_PRIM_POINTS ?
 327          fui(ctx->rasterizer->base.point_size) : fui(ctx->rasterizer->base.line_width);
 328       PLBU_CMD_LOW_PRIM_SIZE(v);
 329    }
 330
 331    if (info->index_size) {
 332       PLBU_CMD_INDEXED_DEST(ctx->gp_output->va);
 333       if (vs->point_size_idx != -1)
 334          PLBU_CMD_INDEXED_PT_SIZE(ctx->gp_output->va + ctx->gp_output_point_size_offt);
 335
 336       PLBU_CMD_INDICES(ctx->index_res->bo->va + info->start * info->index_size + ctx->index_offset);
 337    }
 338    else {
 339       /* can this make the attribute info static? */
 340       PLBU_CMD_DRAW_ARRAYS(info->mode, info->start, info->count);
 341    }
 342
 343    PLBU_CMD_ARRAYS_SEMAPHORE_END();
 344
 345    if (info->index_size)
 346       PLBU_CMD_DRAW_ELEMENTS(info->mode, ctx->min_index, info->count);
 347
 348    PLBU_CMD_END();
 349 }
 350
 351 static int
 352 lima_blend_func(enum pipe_blend_func pipe)
 353 {
 354    switch (pipe) {
 355    case PIPE_BLEND_ADD:
 356       return 2;
 357    case PIPE_BLEND_SUBTRACT:
 358       return 0;
 359    case PIPE_BLEND_REVERSE_SUBTRACT:
 360       return 1;
 361    case PIPE_BLEND_MIN:
 362       return 4;
 363    case PIPE_BLEND_MAX:
 364       return 5;
 365    }
 366    return -1;
 367 }
 368
 369 static int
 370 lima_blend_factor_has_alpha(enum pipe_blendfactor pipe)
 371 {
 372    /* Bit 4 is set if the blendfactor uses alpha */
 373    switch (pipe) {
 374    case PIPE_BLENDFACTOR_SRC_ALPHA:
 375    case PIPE_BLENDFACTOR_DST_ALPHA:
 376    case PIPE_BLENDFACTOR_CONST_ALPHA:
 377    case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
 378    case PIPE_BLENDFACTOR_INV_DST_ALPHA:
 379    case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
 380       return 1;
 381
 382    case PIPE_BLENDFACTOR_SRC_COLOR:
 383    case PIPE_BLENDFACTOR_INV_SRC_COLOR:
 384    case PIPE_BLENDFACTOR_DST_COLOR:
 385    case PIPE_BLENDFACTOR_INV_DST_COLOR:
 386    case PIPE_BLENDFACTOR_CONST_COLOR:
 387    case PIPE_BLENDFACTOR_INV_CONST_COLOR:
 388    case PIPE_BLENDFACTOR_ZERO:
 389    case PIPE_BLENDFACTOR_ONE:
 390    case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
 391       return 0;
 392
 393    case PIPE_BLENDFACTOR_SRC1_COLOR:
 394    case PIPE_BLENDFACTOR_SRC1_ALPHA:
 395    case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
 396    case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
 397       return -1; /* not supported */
 398    }
 399    return -1;
 400 }
 401
 402 static int
 403 lima_blend_factor_is_inv(enum pipe_blendfactor pipe)
 404 {
 405    /* Bit 3 is set if the blendfactor type is inverted */
 406    switch (pipe) {
 407    case PIPE_BLENDFACTOR_INV_SRC_COLOR:
 408    case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
 409    case PIPE_BLENDFACTOR_INV_DST_COLOR:
 410    case PIPE_BLENDFACTOR_INV_DST_ALPHA:
 411    case PIPE_BLENDFACTOR_INV_CONST_COLOR:
 412    case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
 413    case PIPE_BLENDFACTOR_ONE:
 414       return 1;
 415
 416    case PIPE_BLENDFACTOR_SRC_COLOR:
 417    case PIPE_BLENDFACTOR_SRC_ALPHA:
 418    case PIPE_BLENDFACTOR_DST_COLOR:
 419    case PIPE_BLENDFACTOR_DST_ALPHA:
 420    case PIPE_BLENDFACTOR_CONST_COLOR:
 421    case PIPE_BLENDFACTOR_CONST_ALPHA:
 422    case PIPE_BLENDFACTOR_ZERO:
 423    case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
 424       return 0;
 425
 426    case PIPE_BLENDFACTOR_SRC1_COLOR:
 427    case PIPE_BLENDFACTOR_SRC1_ALPHA:
 428    case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
 429    case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
 430       return -1; /* not supported */
 431    }
 432    return -1;
 433 }
 434
 435 static int
 436 lima_blend_factor(enum pipe_blendfactor pipe)
 437 {
 438    /* Bits 0-2 indicate the blendfactor type */
 439    switch (pipe) {
 440    case PIPE_BLENDFACTOR_SRC_COLOR:
 441    case PIPE_BLENDFACTOR_SRC_ALPHA:
 442    case PIPE_BLENDFACTOR_INV_SRC_COLOR:
 443    case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
 444       return 0;
 445
 446    case PIPE_BLENDFACTOR_DST_COLOR:
 447    case PIPE_BLENDFACTOR_DST_ALPHA:
 448    case PIPE_BLENDFACTOR_INV_DST_COLOR:
 449    case PIPE_BLENDFACTOR_INV_DST_ALPHA:
 450       return 1;
 451
 452    case PIPE_BLENDFACTOR_CONST_COLOR:
 453    case PIPE_BLENDFACTOR_CONST_ALPHA:
 454    case PIPE_BLENDFACTOR_INV_CONST_COLOR:
 455    case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
 456       return 2;
 457
 458    case PIPE_BLENDFACTOR_ZERO:
 459    case PIPE_BLENDFACTOR_ONE:
 460       return 3;
 461
 462    case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
 463       return 4;
 464
 465    case PIPE_BLENDFACTOR_SRC1_COLOR:
 466    case PIPE_BLENDFACTOR_SRC1_ALPHA:
 467    case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
 468    case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
 469       return -1; /* not supported */
 470    }
 471    return -1;
 472 }
 473
 474 static int
 475 lima_calculate_alpha_blend(enum pipe_blend_func rgb_func, enum pipe_blend_func alpha_func,
 476                            enum pipe_blendfactor rgb_src_factor, enum pipe_blendfactor rgb_dst_factor,
 477                            enum pipe_blendfactor alpha_src_factor, enum pipe_blendfactor alpha_dst_factor)
 478 {
 479    /* PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE has to be changed to PIPE_BLENDFACTOR_ONE
 480     * if it is set for alpha_src.
 481     */
 482    if (alpha_src_factor == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE)
 483       alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 484
 485    return lima_blend_func(rgb_func) |
 486       (lima_blend_func(alpha_func) << 3) |
 487
 488       (lima_blend_factor(rgb_src_factor) << 6) |
 489       (lima_blend_factor_is_inv(rgb_src_factor) << 9) |
 490       (lima_blend_factor_has_alpha(rgb_src_factor) << 10) |
 491
 492       (lima_blend_factor(rgb_dst_factor) << 11) |
 493       (lima_blend_factor_is_inv(rgb_dst_factor) << 14) |
 494       (lima_blend_factor_has_alpha(rgb_dst_factor) << 15) |
 495
 496       (lima_blend_factor(alpha_src_factor) << 16) |
 497       (lima_blend_factor_is_inv(alpha_src_factor) << 19) |
 498
 499       (lima_blend_factor(alpha_dst_factor) << 20) |
 500       (lima_blend_factor_is_inv(alpha_dst_factor) << 23) |
 501       0x0C000000; /* need to check if this is GLESv1 glAlphaFunc */
 502 }
 503
 504 static int
 505 lima_stencil_op(enum pipe_stencil_op pipe)
 506 {
 507    switch (pipe) {
 508    case PIPE_STENCIL_OP_KEEP:
 509       return 0;
 510    case PIPE_STENCIL_OP_ZERO:
 511       return 2;
 512    case PIPE_STENCIL_OP_REPLACE:
 513       return 1;
 514    case PIPE_STENCIL_OP_INCR:
 515       return 6;
 516    case PIPE_STENCIL_OP_DECR:
 517       return 7;
 518    case PIPE_STENCIL_OP_INCR_WRAP:
 519       return 4;
 520    case PIPE_STENCIL_OP_DECR_WRAP:
 521       return 5;
 522    case PIPE_STENCIL_OP_INVERT:
 523       return 3;
 524    }
 525    return -1;
 526 }
 527
 528 static unsigned
 529 lima_calculate_depth_test(struct pipe_depth_state *depth, struct pipe_rasterizer_state *rst)
 530 {
 531    int offset_scale = 0, offset_units = 0;
 532    enum pipe_compare_func func = (depth->enabled ? depth->func : PIPE_FUNC_ALWAYS);
 533
 534    offset_scale = CLAMP(rst->offset_scale * 4, -128, 127);
 535    if (offset_scale < 0)
 536       offset_scale += 0x100;
 537
 538    offset_units = CLAMP(rst->offset_units * 2, -128, 127);
 539    if (offset_units < 0)
 540       offset_units += 0x100;
 541
 542    return (depth->enabled && depth->writemask) |
 543       ((int)func << 1) |
 544       (offset_scale << 16) |
 545       (offset_units << 24) |
 546       0x30; /* find out what is this */
 547 }
 548
 549 static void
 550 lima_pack_render_state(struct lima_context *ctx, const struct pipe_draw_info *info)
 551 {
 552    struct lima_fs_shader_state *fs = ctx->fs;
 553    struct lima_render_state *render =
 554       lima_ctx_buff_alloc(ctx, lima_ctx_buff_pp_plb_rsw,
 555                           sizeof(*render));
 556    bool early_z = true;
 557    bool pixel_kill = true;
 558
 559    /* do hw support RGBA independ blend?
 560     * PIPE_CAP_INDEP_BLEND_ENABLE
 561     *
 562     * how to handle the no cbuf only zbuf case?
 563     */
 564    struct pipe_rt_blend_state *rt = ctx->blend->base.rt;
 565    render->blend_color_bg = float_to_ubyte(ctx->blend_color.color[2]) |
 566       (float_to_ubyte(ctx->blend_color.color[1]) << 16);
 567    render->blend_color_ra = float_to_ubyte(ctx->blend_color.color[0]) |
 568       (float_to_ubyte(ctx->blend_color.color[3]) << 16);
 569
 570    if (rt->blend_enable) {
 571       render->alpha_blend = lima_calculate_alpha_blend(rt->rgb_func, rt->alpha_func,
 572          rt->rgb_src_factor, rt->rgb_dst_factor,
 573          rt->alpha_src_factor, rt->alpha_dst_factor);
 574    }
 575    else {
 576       /*
 577        * Special handling for blending disabled.
 578        * Binary driver is generating the same alpha_value,
 579        * as when we would just enable blending, without changing/setting any blend equation/params.
 580        * Normaly in this case mesa would set all rt fields (func/factor) to zero.
 581        */
 582       render->alpha_blend = lima_calculate_alpha_blend(PIPE_BLEND_ADD, PIPE_BLEND_ADD,
 583          PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ZERO,
 584          PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ZERO);
 585    }
 586
 587    render->alpha_blend |= (rt->colormask & PIPE_MASK_RGBA) << 28;
 588
 589    struct pipe_rasterizer_state *rst = &ctx->rasterizer->base;
 590    struct pipe_depth_state *depth = &ctx->zsa->base.depth;
 591    render->depth_test = lima_calculate_depth_test(depth, rst);
 592
 593    ushort far, near;
 594
 595    near = float_to_ushort(ctx->viewport.near);
 596    far = float_to_ushort(ctx->viewport.far);
 597
 598    /* Subtract epsilon from 'near' if far == near. Make sure we don't get overflow */
 599    if ((far == near) && (near != 0))
 600          near--;
 601
 602    /* overlap with plbu? any place can remove one? */
 603    render->depth_range = near | (far << 16);
 604
 605    struct pipe_stencil_state *stencil = ctx->zsa->base.stencil;
 606    struct pipe_stencil_ref *ref = &ctx->stencil_ref;
 607
 608    if (stencil[0].enabled) { /* stencil is enabled */
 609       render->stencil_front = stencil[0].func |
 610          (lima_stencil_op(stencil[0].fail_op) << 3) |
 611          (lima_stencil_op(stencil[0].zfail_op) << 6) |
 612          (lima_stencil_op(stencil[0].zpass_op) << 9) |
 613          (ref->ref_value[0] << 16) |
 614          (stencil[0].valuemask << 24);
 615       render->stencil_back = render->stencil_front;
 616       render->stencil_test = (stencil[0].writemask & 0xff) | (stencil[0].writemask & 0xff) << 8;
 617       if (stencil[1].enabled) { /* two-side is enabled */
 618          render->stencil_back = stencil[1].func |
 619             (lima_stencil_op(stencil[1].fail_op) << 3) |
 620             (lima_stencil_op(stencil[1].zfail_op) << 6) |
 621             (lima_stencil_op(stencil[1].zpass_op) << 9) |
 622             (ref->ref_value[1] << 16) |
 623             (stencil[1].valuemask << 24);
 624          render->stencil_test = (stencil[0].writemask & 0xff) | (stencil[1].writemask & 0xff) << 8;
 625       }
 626       /* TODO: Find out, what (render->stecil_test & 0xffff0000) is.
 627        * 0x00ff0000 is probably (float_to_ubyte(alpha->ref_value) << 16)
 628        * (render->multi_sample & 0x00000007 is probably the compare function
 629        * of glAlphaFunc then.
 630        */
 631    }
 632    else {
 633       /* Default values, when stencil is disabled:
 634        * stencil[0|1].valuemask = 0xff
 635        * stencil[0|1].func = PIPE_FUNC_ALWAYS
 636        * stencil[0|1].writemask = 0xff
 637        */
 638       render->stencil_front = 0xff000007;
 639       render->stencil_back = 0xff000007;
 640       render->stencil_test = 0x0000ffff;
 641    }
 642
 643    /* need more investigation */
 644    if (info->mode == PIPE_PRIM_POINTS)
 645       render->multi_sample = 0x0000F007;
 646    else if (info->mode < PIPE_PRIM_TRIANGLES)
 647       render->multi_sample = 0x0000F407;
 648    else
 649       render->multi_sample = 0x0000F807;
 650    if (ctx->framebuffer.base.samples)
 651       render->multi_sample |= 0x68;
 652
 653    render->shader_address =
 654       ctx->fs->bo->va | (((uint32_t *)ctx->fs->bo->map)[0] & 0x1F);
 655
 656    /* seems not needed */
 657    render->uniforms_address = 0x00000000;
 658
 659    render->textures_address = 0x00000000;
 660
 661    render->aux0 = (ctx->vs->varying_stride >> 3);
 662    render->aux1 = 0x00001000;
 663    if (ctx->blend->base.dither)
 664       render->aux1 |= 0x00002000;
 665
 666    if (fs->uses_discard) {
 667       early_z = false;
 668       pixel_kill = false;
 669    }
 670
 671    if (rt->blend_enable)
 672       pixel_kill = false;
 673
 674    if ((rt->colormask & PIPE_MASK_RGBA) != PIPE_MASK_RGBA)
 675       pixel_kill = false;
 676
 677    if (early_z)
 678       render->aux0 |= 0x300;
 679
 680    if (pixel_kill)
 681       render->aux0 |= 0x1000;
 682
 683    if (ctx->tex_stateobj.num_samplers) {
 684       render->textures_address =
 685          lima_ctx_buff_va(ctx, lima_ctx_buff_pp_tex_desc);
 686       render->aux0 |= ctx->tex_stateobj.num_samplers << 14;
 687       render->aux0 |= 0x20;
 688    }
 689
 690    if (ctx->const_buffer[PIPE_SHADER_FRAGMENT].buffer) {
 691       render->uniforms_address =
 692          lima_ctx_buff_va(ctx, lima_ctx_buff_pp_uniform_array);
 693       uint32_t size = ctx->buffer_state[lima_ctx_buff_pp_uniform].size;
 694       uint32_t bits = 0;
 695       if (size >= 8) {
 696          bits = util_last_bit(size >> 3) - 1;
 697          bits += size & u_bit_consecutive(0, bits + 3) ? 1 : 0;
 698       }
 699       render->uniforms_address |= bits > 0xf ? 0xf : bits;
 700
 701       render->aux0 |= 0x80;
 702       render->aux1 |= 0x10000;
 703    }
 704
 705    if (ctx->vs->num_varyings) {
 706       render->varying_types = 0x00000000;
 707       render->varyings_address = ctx->gp_output->va +
 708                                  ctx->gp_output_varyings_offt;
 709       for (int i = 0, index = 0; i < ctx->vs->num_outputs; i++) {
 710          int val;
 711
 712          if (i == ctx->vs->gl_pos_idx ||
 713              i == ctx->vs->point_size_idx)
 714             continue;
 715
 716          struct lima_varying_info *v = ctx->vs->varying + i;
 717          if (v->component_size == 4)
 718             val = v->components > 2 ? 0 : 1;
 719          else
 720             val = v->components > 2 ? 2 : 3;
 721
 722          if (index < 10)
 723             render->varying_types |= val << (3 * index);
 724          else if (index == 10) {
 725             render->varying_types |= val << 30;
 726             render->varyings_address |= val >> 2;
 727          }
 728          else if (index == 11)
 729             render->varyings_address |= val << 1;
 730
 731          index++;
 732       }
 733    }
 734    else {
 735       render->varying_types = 0x00000000;
 736       render->varyings_address = 0x00000000;
 737    }
 738
 739    lima_dump_command_stream_print(
 740       render, sizeof(*render), false, "add render state at va %x\n",
 741       lima_ctx_buff_va(ctx, lima_ctx_buff_pp_plb_rsw));
 742
 743    lima_dump_rsw_command_stream_print(
 744       render, sizeof(*render), lima_ctx_buff_va(ctx, lima_ctx_buff_pp_plb_rsw));
 745
 746 }
 747
 748 static void
 749 lima_update_gp_attribute_info(struct lima_context *ctx, const struct pipe_draw_info *info)
 750 {
 751    struct lima_submit *submit = lima_submit_get(ctx);
 752    struct lima_vertex_element_state *ve = ctx->vertex_elements;
 753    struct lima_context_vertex_buffer *vb = &ctx->vertex_buffers;
 754
 755    uint32_t *attribute =
 756       lima_ctx_buff_alloc(ctx, lima_ctx_buff_gp_attribute_info,
 757                           MAX2(1, ve->num_elements) * 8);
 758
 759    int n = 0;
 760    for (int i = 0; i < ve->num_elements; i++) {
 761       struct pipe_vertex_element *pve = ve->pipe + i;
 762
 763       assert(pve->vertex_buffer_index < vb->count);
 764       assert(vb->enabled_mask & (1 << pve->vertex_buffer_index));
 765
 766       struct pipe_vertex_buffer *pvb = vb->vb + pve->vertex_buffer_index;
 767       struct lima_resource *res = lima_resource(pvb->buffer.resource);
 768
 769       lima_submit_add_bo(submit, LIMA_PIPE_GP, res->bo, LIMA_SUBMIT_BO_READ);
 770
 771       unsigned start = info->index_size ? (ctx->min_index + info->index_bias) : info->start;
 772       attribute[n++] = res->bo->va + pvb->buffer_offset + pve->src_offset
 773          + start * pvb->stride;
 774       attribute[n++] = (pvb->stride << 11) |
 775          (lima_pipe_format_to_attrib_type(pve->src_format) << 2) |
 776          (util_format_get_nr_components(pve->src_format) - 1);
 777    }
 778
 779    lima_dump_command_stream_print(
 780       attribute, n * 4, false, "update attribute info at va %x\n",
 781       lima_ctx_buff_va(ctx, lima_ctx_buff_gp_attribute_info));
 782 }
 783
 784 static void
 785 lima_update_gp_uniform(struct lima_context *ctx)
 786 {
 787    struct lima_context_constant_buffer *ccb =
 788       ctx->const_buffer + PIPE_SHADER_VERTEX;
 789    struct lima_vs_shader_state *vs = ctx->vs;
 790
 791    int size = vs->uniform_pending_offset + vs->constant_size + 32;
 792    void *vs_const_buff =
 793       lima_ctx_buff_alloc(ctx, lima_ctx_buff_gp_uniform, size);
 794
 795    if (ccb->buffer)
 796       memcpy(vs_const_buff, ccb->buffer, ccb->size);
 797
 798    memcpy(vs_const_buff + vs->uniform_pending_offset,
 799           ctx->viewport.transform.scale,
 800           sizeof(ctx->viewport.transform.scale));
 801    memcpy(vs_const_buff + vs->uniform_pending_offset + 16,
 802           ctx->viewport.transform.translate,
 803           sizeof(ctx->viewport.transform.translate));
 804
 805    if (vs->constant)
 806       memcpy(vs_const_buff + vs->uniform_pending_offset + 32,
 807              vs->constant, vs->constant_size);
 808
 809    lima_dump_command_stream_print(
 810       vs_const_buff, size, true,
 811       "update gp uniform at va %x\n",
 812       lima_ctx_buff_va(ctx, lima_ctx_buff_gp_uniform));
 813 }
 814
 815 static void
 816 lima_update_pp_uniform(struct lima_context *ctx)
 817 {
 818    const float *const_buff = ctx->const_buffer[PIPE_SHADER_FRAGMENT].buffer;
 819    size_t const_buff_size = ctx->const_buffer[PIPE_SHADER_FRAGMENT].size / sizeof(float);
 820
 821    if (!const_buff)
 822       return;
 823
 824    uint16_t *fp16_const_buff =
 825       lima_ctx_buff_alloc(ctx, lima_ctx_buff_pp_uniform,
 826                           const_buff_size * sizeof(uint16_t));
 827
 828    uint32_t *array =
 829       lima_ctx_buff_alloc(ctx, lima_ctx_buff_pp_uniform_array, 4);
 830
 831    for (int i = 0; i < const_buff_size; i++)
 832        fp16_const_buff[i] = util_float_to_half(const_buff[i]);
 833
 834    *array = lima_ctx_buff_va(ctx, lima_ctx_buff_pp_uniform);
 835
 836    lima_dump_command_stream_print(
 837       fp16_const_buff, const_buff_size * 2, false, "add pp uniform data at va %x\n",
 838       lima_ctx_buff_va(ctx, lima_ctx_buff_pp_uniform));
 839    lima_dump_command_stream_print(
 840       array, 4, false, "add pp uniform info at va %x\n",
 841       lima_ctx_buff_va(ctx, lima_ctx_buff_pp_uniform_array));
 842 }
 843
 844 static void
 845 lima_update_varying(struct lima_context *ctx, const struct pipe_draw_info *info)
 846 {
 847    struct lima_submit *submit = lima_submit_get(ctx);
 848    struct lima_screen *screen = lima_screen(ctx->base.screen);
 849    struct lima_vs_shader_state *vs = ctx->vs;
 850    uint32_t gp_output_size;
 851    unsigned num = info->index_size ? (ctx->max_index - ctx->min_index + 1) : info->count;
 852
 853    uint32_t *varying =
 854       lima_ctx_buff_alloc(ctx, lima_ctx_buff_gp_varying_info,
 855                           vs->num_outputs * 8);
 856    int n = 0;
 857
 858    int offset = 0;
 859
 860    for (int i = 0; i < vs->num_outputs; i++) {
 861       struct lima_varying_info *v = vs->varying + i;
 862
 863       if (i == vs->gl_pos_idx ||
 864           i == vs->point_size_idx)
 865          continue;
 866
 867       int size = v->component_size * 4;
 868
 869       /* does component_size == 2 need to be 16 aligned? */
 870       if (v->component_size == 4)
 871          offset = align(offset, 16);
 872
 873       v->offset = offset;
 874       offset += size;
 875    }
 876
 877    vs->varying_stride = align(offset, 16);
 878
 879    /* gl_Position is always present, allocate space for it */
 880    gp_output_size = align(4 * 4 * num, 0x40);
 881
 882    /* Allocate space for varyings if there're any */
 883    if (vs->num_varyings) {
 884       ctx->gp_output_varyings_offt = gp_output_size;
 885       gp_output_size += align(vs->varying_stride * num, 0x40);
 886    }
 887
 888    /* Allocate space for gl_PointSize if it's there */
 889    if (vs->point_size_idx != -1) {
 890       ctx->gp_output_point_size_offt = gp_output_size;
 891       gp_output_size += 4 * num;
 892    }
 893
 894    /* gp_output can be too large for the suballocator, so create a
 895     * separate bo for it. The bo cache should prevent performance hit.
 896     */
 897    ctx->gp_output = lima_bo_create(screen, gp_output_size, 0);
 898    assert(ctx->gp_output);
 899    lima_submit_add_bo(submit, LIMA_PIPE_GP, ctx->gp_output, LIMA_SUBMIT_BO_WRITE);
 900    lima_submit_add_bo(submit, LIMA_PIPE_PP, ctx->gp_output, LIMA_SUBMIT_BO_READ);
 901
 902    for (int i = 0; i < vs->num_outputs; i++) {
 903       struct lima_varying_info *v = vs->varying + i;
 904
 905       if (i == vs->gl_pos_idx) {
 906          /* gl_Position */
 907          varying[n++] = ctx->gp_output->va;
 908          varying[n++] = 0x8020;
 909       } else if (i == vs->point_size_idx) {
 910          /* gl_PointSize */
 911          varying[n++] = ctx->gp_output->va + ctx->gp_output_point_size_offt;
 912          varying[n++] = 0x2021;
 913       } else {
 914          /* Varying */
 915          varying[n++] = ctx->gp_output->va + ctx->gp_output_varyings_offt +
 916                         v->offset;
 917          varying[n++] = (vs->varying_stride << 11) | (v->components - 1) |
 918             (v->component_size == 2 ? 0x0C : 0);
 919       }
 920    }
 921
 922    lima_dump_command_stream_print(
 923       varying, n * 4, false, "update varying info at va %x\n",
 924       lima_ctx_buff_va(ctx, lima_ctx_buff_gp_varying_info));
 925 }
 926
 927 static void
 928 lima_draw_vbo_update(struct pipe_context *pctx,
 929                      const struct pipe_draw_info *info)
 930 {
 931    struct lima_context *ctx = lima_context(pctx);
 932    struct lima_context_framebuffer *fb = &ctx->framebuffer;
 933    unsigned buffers = 0;
 934
 935    if (fb->base.zsbuf) {
 936       if (ctx->zsa->base.depth.enabled)
 937          buffers |= PIPE_CLEAR_DEPTH;
 938       if (ctx->zsa->base.stencil[0].enabled ||
 939           ctx->zsa->base.stencil[1].enabled)
 940          buffers |= PIPE_CLEAR_STENCIL;
 941    }
 942
 943    if (fb->base.nr_cbufs)
 944       buffers |= PIPE_CLEAR_COLOR0;
 945
 946    lima_update_submit_wb(ctx, buffers);
 947
 948    lima_update_gp_attribute_info(ctx, info);
 949
 950    if ((ctx->dirty & LIMA_CONTEXT_DIRTY_CONST_BUFF &&
 951         ctx->const_buffer[PIPE_SHADER_VERTEX].dirty) ||
 952        ctx->dirty & LIMA_CONTEXT_DIRTY_VIEWPORT ||
 953        ctx->dirty & LIMA_CONTEXT_DIRTY_SHADER_VERT) {
 954       lima_update_gp_uniform(ctx);
 955       ctx->const_buffer[PIPE_SHADER_VERTEX].dirty = false;
 956    }
 957
 958    lima_update_varying(ctx, info);
 959
 960    /* If it's zero scissor, don't build vs cmd list */
 961    if (!lima_is_scissor_zero(ctx))
 962       lima_pack_vs_cmd(ctx, info);
 963
 964    if (ctx->dirty & LIMA_CONTEXT_DIRTY_CONST_BUFF &&
 965        ctx->const_buffer[PIPE_SHADER_FRAGMENT].dirty) {
 966       lima_update_pp_uniform(ctx);
 967       ctx->const_buffer[PIPE_SHADER_FRAGMENT].dirty = false;
 968    }
 969
 970    lima_update_textures(ctx);
 971
 972    lima_pack_render_state(ctx, info);
 973    lima_pack_plbu_cmd(ctx, info);
 974
 975    if (ctx->gp_output) {
 976       lima_bo_unreference(ctx->gp_output); /* held by submit */
 977       ctx->gp_output = NULL;
 978    }
 979
 980    ctx->dirty = 0;
 981 }
 982
 983 static void
 984 lima_draw_vbo_indexed(struct pipe_context *pctx,
 985                       const struct pipe_draw_info *info)
 986 {
 987    struct lima_context *ctx = lima_context(pctx);
 988    struct lima_submit *submit = lima_submit_get(ctx);
 989    struct pipe_resource *indexbuf = NULL;
 990
 991    /* Mali Utgard GPU always need min/max index info for index draw,
 992     * compute it if upper layer does not do for us */
 993    if (info->max_index == ~0u)
 994       u_vbuf_get_minmax_index(pctx, info, &ctx->min_index, &ctx->max_index);
 995    else {
 996       ctx->min_index = info->min_index;
 997       ctx->max_index = info->max_index;
 998    }
 999
1000    if (info->has_user_indices) {
1001       util_upload_index_buffer(&ctx->base, info, &indexbuf, &ctx->index_offset, 0x40);
1002       ctx->index_res = lima_resource(indexbuf);
1003    }
1004    else {
1005       ctx->index_res = lima_resource(info->index.resource);
1006       ctx->index_offset = 0;
1007    }
1008
1009    lima_submit_add_bo(submit, LIMA_PIPE_GP, ctx->index_res->bo, LIMA_SUBMIT_BO_READ);
1010    lima_submit_add_bo(submit, LIMA_PIPE_PP, ctx->index_res->bo, LIMA_SUBMIT_BO_READ);
1011    lima_draw_vbo_update(pctx, info);
1012
1013    if (indexbuf)
1014       pipe_resource_reference(&indexbuf, NULL);
1015 }
1016
1017 static void
1018 lima_draw_vbo_count(struct pipe_context *pctx,
1019                     const struct pipe_draw_info *info)
1020 {
1021    static const uint32_t max_verts = 65535;
1022
1023    struct pipe_draw_info local_info = *info;
1024    unsigned start = info->start;
1025    unsigned count = info->count;
1026
1027    while (count) {
1028       unsigned this_count = count;
1029       unsigned step;
1030
1031       u_split_draw(info, max_verts, &this_count, &step);
1032
1033       local_info.start = start;
1034       local_info.count = this_count;
1035
1036       lima_draw_vbo_update(pctx, &local_info);
1037
1038       count -= step;
1039       start += step;
1040    }
1041 }
1042
1043 static void
1044 lima_draw_vbo(struct pipe_context *pctx,
1045               const struct pipe_draw_info *info)
1046 {
1047    /* check if draw mode and vertex/index count match,
1048     * otherwise gp will hang */
1049    if (!u_trim_pipe_prim(info->mode, (unsigned*)&info->count)) {
1050       debug_printf("draw mode and vertex/index count mismatch\n");
1051       return;
1052    }
1053
1054    struct lima_context *ctx = lima_context(pctx);
1055
1056    if (!ctx->vs || !ctx->fs) {
1057       debug_warn_once("no shader, skip draw\n");
1058       return;
1059    }
1060
1061    if (!lima_update_vs_state(ctx) || !lima_update_fs_state(ctx))
1062       return;
1063
1064    struct lima_submit *submit = lima_submit_get(ctx);
1065
1066    lima_dump_command_stream_print(
1067       ctx->vs->bo->map, ctx->vs->shader_size, false,
1068       "add vs at va %x\n", ctx->vs->bo->va);
1069
1070    lima_dump_command_stream_print(
1071       ctx->fs->bo->map, ctx->fs->shader_size, false,
1072       "add fs at va %x\n", ctx->fs->bo->va);
1073
1074    lima_submit_add_bo(submit, LIMA_PIPE_GP, ctx->vs->bo, LIMA_SUBMIT_BO_READ);
1075    lima_submit_add_bo(submit, LIMA_PIPE_PP, ctx->fs->bo, LIMA_SUBMIT_BO_READ);
1076
1077    if (info->index_size)
1078       lima_draw_vbo_indexed(pctx, info);
1079    else
1080       lima_draw_vbo_count(pctx, info);
1081 }
1082
1083 void
1084 lima_draw_init(struct lima_context *ctx)
1085 {
1086    ctx->base.clear = lima_clear;
1087    ctx->base.draw_vbo = lima_draw_vbo;
1088 }