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