src/gallium/drivers/vc5/vc5_emit.c

   1 /*
   2  * Copyright © 2014-2017 Broadcom
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include "util/u_format.h"
  25 #include "util/u_half.h"
  26 #include "vc5_context.h"
  27 #include "broadcom/cle/v3d_packet_v33_pack.h"
  28 #include "broadcom/compiler/v3d_compiler.h"
  29
  30 static uint8_t
  31 vc5_factor(enum pipe_blendfactor factor, bool dst_alpha_one)
  32 {
  33         /* We may get a bad blendfactor when blending is disabled. */
  34         if (factor == 0)
  35                 return V3D_BLEND_FACTOR_ZERO;
  36
  37         switch (factor) {
  38         case PIPE_BLENDFACTOR_ZERO:
  39                 return V3D_BLEND_FACTOR_ZERO;
  40         case PIPE_BLENDFACTOR_ONE:
  41                 return V3D_BLEND_FACTOR_ONE;
  42         case PIPE_BLENDFACTOR_SRC_COLOR:
  43                 return V3D_BLEND_FACTOR_SRC_COLOR;
  44         case PIPE_BLENDFACTOR_INV_SRC_COLOR:
  45                 return V3D_BLEND_FACTOR_INV_SRC_COLOR;
  46         case PIPE_BLENDFACTOR_DST_COLOR:
  47                 return V3D_BLEND_FACTOR_DST_COLOR;
  48         case PIPE_BLENDFACTOR_INV_DST_COLOR:
  49                 return V3D_BLEND_FACTOR_INV_DST_COLOR;
  50         case PIPE_BLENDFACTOR_SRC_ALPHA:
  51                 return V3D_BLEND_FACTOR_SRC_ALPHA;
  52         case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
  53                 return V3D_BLEND_FACTOR_INV_SRC_ALPHA;
  54         case PIPE_BLENDFACTOR_DST_ALPHA:
  55                 return (dst_alpha_one ?
  56                         V3D_BLEND_FACTOR_ONE :
  57                         V3D_BLEND_FACTOR_DST_ALPHA);
  58         case PIPE_BLENDFACTOR_INV_DST_ALPHA:
  59                 return (dst_alpha_one ?
  60                         V3D_BLEND_FACTOR_ZERO :
  61                         V3D_BLEND_FACTOR_INV_DST_ALPHA);
  62         case PIPE_BLENDFACTOR_CONST_COLOR:
  63                 return V3D_BLEND_FACTOR_CONST_COLOR;
  64         case PIPE_BLENDFACTOR_INV_CONST_COLOR:
  65                 return V3D_BLEND_FACTOR_INV_CONST_COLOR;
  66         case PIPE_BLENDFACTOR_CONST_ALPHA:
  67                 return V3D_BLEND_FACTOR_CONST_ALPHA;
  68         case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
  69                 return V3D_BLEND_FACTOR_INV_CONST_ALPHA;
  70         case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
  71                 return V3D_BLEND_FACTOR_SRC_ALPHA_SATURATE;
  72         default:
  73                 unreachable("Bad blend factor");
  74         }
  75 }
  76
  77 static inline uint16_t
  78 swizzled_border_color(struct pipe_sampler_state *sampler,
  79                       struct vc5_sampler_view *sview,
  80                       int chan)
  81 {
  82         const struct util_format_description *desc =
  83                 util_format_description(sview->base.format);
  84         uint8_t swiz = chan;
  85
  86         /* If we're doing swizzling in the sampler, then only rearrange the
  87          * border color for the mismatch between the VC5 texture format and
  88          * the PIPE_FORMAT, since GL_ARB_texture_swizzle will be handled by
  89          * the sampler's swizzle.
  90          *
  91          * For swizzling in the shader, we don't do any pre-swizzling of the
  92          * border color.
  93          */
  94         if (vc5_get_tex_return_size(sview->base.format) != 32)
  95                 swiz = desc->swizzle[swiz];
  96
  97         switch (swiz) {
  98         case PIPE_SWIZZLE_0:
  99                 return util_float_to_half(0.0);
 100         case PIPE_SWIZZLE_1:
 101                 return util_float_to_half(1.0);
 102         default:
 103                 return util_float_to_half(sampler->border_color.f[swiz]);
 104         }
 105 }
 106
 107 static void
 108 emit_one_texture(struct vc5_context *vc5, struct vc5_texture_stateobj *stage_tex,
 109                  int i)
 110 {
 111         struct vc5_job *job = vc5->job;
 112         struct pipe_sampler_state *psampler = stage_tex->samplers[i];
 113         struct vc5_sampler_state *sampler = vc5_sampler_state(psampler);
 114         struct pipe_sampler_view *psview = stage_tex->textures[i];
 115         struct vc5_sampler_view *sview = vc5_sampler_view(psview);
 116         struct pipe_resource *prsc = psview->texture;
 117         struct vc5_resource *rsc = vc5_resource(prsc);
 118
 119         stage_tex->texture_state[i].offset =
 120                 vc5_cl_ensure_space(&job->indirect,
 121                                     cl_packet_length(TEXTURE_SHADER_STATE),
 122                                     32);
 123         vc5_bo_set_reference(&stage_tex->texture_state[i].bo,
 124                              job->indirect.bo);
 125
 126         struct V3D33_TEXTURE_SHADER_STATE unpacked = {
 127                 /* XXX */
 128                 .border_color_red = swizzled_border_color(psampler, sview, 0),
 129                 .border_color_green = swizzled_border_color(psampler, sview, 1),
 130                 .border_color_blue = swizzled_border_color(psampler, sview, 2),
 131                 .border_color_alpha = swizzled_border_color(psampler, sview, 3),
 132
 133                 /* XXX: Disable min/maxlod for txf */
 134                 .max_level_of_detail = MIN2(MIN2(psampler->max_lod,
 135                                                  VC5_MAX_MIP_LEVELS),
 136                                             psview->u.tex.last_level),
 137
 138                 .texture_base_pointer = cl_address(rsc->bo,
 139                                                    rsc->slices[0].offset),
 140         };
 141
 142         int min_img_filter = psampler->min_img_filter;
 143         int min_mip_filter = psampler->min_mip_filter;
 144         int mag_img_filter = psampler->mag_img_filter;
 145
 146         if (vc5_get_tex_return_size(psview->format) == 32) {
 147                 min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 148                 mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 149                 mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 150         }
 151
 152         bool min_nearest = (min_img_filter == PIPE_TEX_FILTER_NEAREST);
 153         switch (min_mip_filter) {
 154         case PIPE_TEX_MIPFILTER_NONE:
 155                 unpacked.minification_filter = 0 + min_nearest;
 156                 break;
 157         case PIPE_TEX_MIPFILTER_NEAREST:
 158                 unpacked.minification_filter = 2 + !min_nearest;
 159                 break;
 160         case PIPE_TEX_MIPFILTER_LINEAR:
 161                 unpacked.minification_filter = 4 + !min_nearest;
 162                 break;
 163         }
 164         unpacked.magnification_filter = (mag_img_filter ==
 165                                          PIPE_TEX_FILTER_NEAREST);
 166
 167         uint8_t packed[cl_packet_length(TEXTURE_SHADER_STATE)];
 168         cl_packet_pack(TEXTURE_SHADER_STATE)(&job->indirect, packed, &unpacked);
 169
 170         for (int i = 0; i < ARRAY_SIZE(packed); i++)
 171                 packed[i] |= sview->texture_shader_state[i] | sampler->texture_shader_state[i];
 172
 173         /* TMU indirect structs need to be 32b aligned. */
 174         vc5_cl_ensure_space(&job->indirect, ARRAY_SIZE(packed), 32);
 175         cl_emit_prepacked(&job->indirect, &packed);
 176 }
 177
 178 static void
 179 emit_textures(struct vc5_context *vc5, struct vc5_texture_stateobj *stage_tex)
 180 {
 181         for (int i = 0; i < stage_tex->num_textures; i++)
 182                 emit_one_texture(vc5, stage_tex, i);
 183 }
 184
 185 void
 186 vc5_emit_state(struct pipe_context *pctx)
 187 {
 188         struct vc5_context *vc5 = vc5_context(pctx);
 189         struct vc5_job *job = vc5->job;
 190
 191         if (vc5->dirty & (VC5_DIRTY_SCISSOR | VC5_DIRTY_VIEWPORT |
 192                           VC5_DIRTY_RASTERIZER)) {
 193                 float *vpscale = vc5->viewport.scale;
 194                 float *vptranslate = vc5->viewport.translate;
 195                 float vp_minx = -fabsf(vpscale[0]) + vptranslate[0];
 196                 float vp_maxx = fabsf(vpscale[0]) + vptranslate[0];
 197                 float vp_miny = -fabsf(vpscale[1]) + vptranslate[1];
 198                 float vp_maxy = fabsf(vpscale[1]) + vptranslate[1];
 199
 200                 /* Clip to the scissor if it's enabled, but still clip to the
 201                  * drawable regardless since that controls where the binner
 202                  * tries to put things.
 203                  *
 204                  * Additionally, always clip the rendering to the viewport,
 205                  * since the hardware does guardband clipping, meaning
 206                  * primitives would rasterize outside of the view volume.
 207                  */
 208                 uint32_t minx, miny, maxx, maxy;
 209                 if (!vc5->rasterizer->base.scissor) {
 210                         minx = MAX2(vp_minx, 0);
 211                         miny = MAX2(vp_miny, 0);
 212                         maxx = MIN2(vp_maxx, job->draw_width);
 213                         maxy = MIN2(vp_maxy, job->draw_height);
 214                 } else {
 215                         minx = MAX2(vp_minx, vc5->scissor.minx);
 216                         miny = MAX2(vp_miny, vc5->scissor.miny);
 217                         maxx = MIN2(vp_maxx, vc5->scissor.maxx);
 218                         maxy = MIN2(vp_maxy, vc5->scissor.maxy);
 219                 }
 220
 221                 cl_emit(&job->bcl, CLIP_WINDOW, clip) {
 222                         clip.clip_window_left_pixel_coordinate = minx;
 223                         clip.clip_window_bottom_pixel_coordinate = miny;
 224                         clip.clip_window_width_in_pixels = maxx - minx;
 225                         clip.clip_window_height_in_pixels = maxy - miny;
 226                 }
 227
 228                 job->draw_min_x = MIN2(job->draw_min_x, minx);
 229                 job->draw_min_y = MIN2(job->draw_min_y, miny);
 230                 job->draw_max_x = MAX2(job->draw_max_x, maxx);
 231                 job->draw_max_y = MAX2(job->draw_max_y, maxy);
 232         }
 233
 234         if (vc5->dirty & (VC5_DIRTY_RASTERIZER |
 235                           VC5_DIRTY_ZSA |
 236                           VC5_DIRTY_BLEND |
 237                           VC5_DIRTY_COMPILED_FS)) {
 238                 cl_emit(&job->bcl, CONFIGURATION_BITS, config) {
 239                         config.enable_forward_facing_primitive =
 240                                 !(vc5->rasterizer->base.cull_face &
 241                                   PIPE_FACE_FRONT);
 242                         config.enable_reverse_facing_primitive =
 243                                 !(vc5->rasterizer->base.cull_face &
 244                                   PIPE_FACE_BACK);
 245                         /* This seems backwards, but it's what gets the
 246                          * clipflat test to pass.
 247                          */
 248                         config.clockwise_primitives =
 249                                 vc5->rasterizer->base.front_ccw;
 250
 251                         config.enable_depth_offset =
 252                                 vc5->rasterizer->base.offset_tri;
 253
 254                         config.rasterizer_oversample_mode =
 255                                 vc5->rasterizer->base.multisample;
 256
 257                         config.direct3d_provoking_vertex =
 258                                 vc5->rasterizer->base.flatshade_first;
 259
 260                         config.blend_enable = vc5->blend->rt[0].blend_enable;
 261
 262                         config.early_z_updates_enable = true;
 263                         if (vc5->zsa->base.depth.enabled) {
 264                                 config.z_updates_enable =
 265                                         vc5->zsa->base.depth.writemask;
 266                                 config.early_z_enable =
 267                                         vc5->zsa->early_z_enable;
 268                                 config.depth_test_function =
 269                                         vc5->zsa->base.depth.func;
 270                         } else {
 271                                 config.depth_test_function = PIPE_FUNC_ALWAYS;
 272                         }
 273
 274                         config.stencil_enable =
 275                                 vc5->zsa->base.stencil[0].enabled;
 276                 }
 277
 278         }
 279
 280         if (vc5->dirty & VC5_DIRTY_RASTERIZER) {
 281                 cl_emit(&job->bcl, DEPTH_OFFSET, depth) {
 282                         depth.depth_offset_factor =
 283                                 vc5->rasterizer->offset_factor;
 284                         depth.depth_offset_units =
 285                                 vc5->rasterizer->offset_units;
 286                 }
 287
 288                 cl_emit(&job->bcl, POINT_SIZE, point_size) {
 289                         point_size.point_size = vc5->rasterizer->point_size;
 290                 }
 291
 292                 cl_emit(&job->bcl, LINE_WIDTH, line_width) {
 293                         line_width.line_width = vc5->rasterizer->base.line_width;
 294                 }
 295         }
 296
 297         if (vc5->dirty & VC5_DIRTY_VIEWPORT) {
 298                 cl_emit(&job->bcl, CLIPPER_XY_SCALING, clip) {
 299                         clip.viewport_half_width_in_1_256th_of_pixel =
 300                                 vc5->viewport.scale[0] * 256.0f;
 301                         clip.viewport_half_height_in_1_256th_of_pixel =
 302                                 vc5->viewport.scale[1] * 256.0f;
 303                 }
 304
 305                 cl_emit(&job->bcl, CLIPPER_Z_SCALE_AND_OFFSET, clip) {
 306                         clip.viewport_z_offset_zc_to_zs =
 307                                 vc5->viewport.translate[2];
 308                         clip.viewport_z_scale_zc_to_zs =
 309                                 vc5->viewport.scale[2];
 310                 }
 311                 if (0 /* XXX */) {
 312                 cl_emit(&job->bcl, CLIPPER_Z_MIN_MAX_CLIPPING_PLANES, clip) {
 313                         clip.minimum_zw = (vc5->viewport.translate[2] -
 314                                            vc5->viewport.scale[2]);
 315                         clip.maximum_zw = (vc5->viewport.translate[2] +
 316                                            vc5->viewport.scale[2]);
 317                 }
 318                 }
 319
 320                 cl_emit(&job->bcl, VIEWPORT_OFFSET, vp) {
 321                         vp.viewport_centre_x_coordinate =
 322                                 vc5->viewport.translate[0];
 323                         vp.viewport_centre_y_coordinate =
 324                                 vc5->viewport.translate[1];
 325                 }
 326         }
 327
 328         if (vc5->dirty & VC5_DIRTY_BLEND && vc5->blend->rt[0].blend_enable) {
 329                 struct pipe_blend_state *blend = vc5->blend;
 330
 331                 cl_emit(&job->bcl, BLEND_CONFIG, config) {
 332                         struct pipe_rt_blend_state *rtblend = &blend->rt[0];
 333
 334                         config.colour_blend_mode = rtblend->rgb_func;
 335                         config.colour_blend_dst_factor =
 336                                 vc5_factor(rtblend->rgb_dst_factor,
 337                                            vc5->blend_dst_alpha_one);
 338                         config.colour_blend_src_factor =
 339                                 vc5_factor(rtblend->rgb_src_factor,
 340                                            vc5->blend_dst_alpha_one);
 341
 342                         config.alpha_blend_mode = rtblend->alpha_func;
 343                         config.alpha_blend_dst_factor =
 344                                 vc5_factor(rtblend->alpha_dst_factor,
 345                                            vc5->blend_dst_alpha_one);
 346                         config.alpha_blend_src_factor =
 347                                 vc5_factor(rtblend->alpha_src_factor,
 348                                            vc5->blend_dst_alpha_one);
 349                 }
 350         }
 351
 352         if (vc5->dirty & VC5_DIRTY_BLEND) {
 353                 struct pipe_blend_state *blend = vc5->blend;
 354
 355                 cl_emit(&job->bcl, COLOUR_WRITE_MASKS, mask) {
 356                         if (blend->independent_blend_enable) {
 357                                 mask.render_target_0_per_colour_component_write_masks =
 358                                         (~blend->rt[0].colormask) & 0xf;
 359                                 mask.render_target_1_per_colour_component_write_masks =
 360                                         (~blend->rt[1].colormask) & 0xf;
 361                                 mask.render_target_2_per_colour_component_write_masks =
 362                                         (~blend->rt[2].colormask) & 0xf;
 363                                 mask.render_target_3_per_colour_component_write_masks =
 364                                         (~blend->rt[3].colormask) & 0xf;
 365                         } else {
 366                                 uint8_t colormask = (~blend->rt[0].colormask) & 0xf;
 367                                 mask.render_target_0_per_colour_component_write_masks = colormask;
 368                                 mask.render_target_1_per_colour_component_write_masks = colormask;
 369                                 mask.render_target_2_per_colour_component_write_masks = colormask;
 370                                 mask.render_target_3_per_colour_component_write_masks = colormask;
 371                         }
 372                 }
 373         }
 374
 375         if (vc5->dirty & VC5_DIRTY_BLEND_COLOR) {
 376                 cl_emit(&job->bcl, BLEND_CONSTANT_COLOUR, colour) {
 377                         colour.red_f16 = (vc5->swap_color_rb ?
 378                                           vc5->blend_color.hf[2] :
 379                                           vc5->blend_color.hf[0]);
 380                         colour.green_f16 = vc5->blend_color.hf[1];
 381                         colour.blue_f16 = (vc5->swap_color_rb ?
 382                                            vc5->blend_color.hf[0] :
 383                                            vc5->blend_color.hf[2]);
 384                         colour.alpha_f16 = vc5->blend_color.hf[3];
 385                 }
 386         }
 387
 388         if (vc5->dirty & (VC5_DIRTY_ZSA | VC5_DIRTY_STENCIL_REF) &&
 389             vc5->zsa->base.stencil[0].enabled) {
 390                 struct pipe_stencil_state *front = &vc5->zsa->base.stencil[0];
 391                 struct pipe_stencil_state *back = &vc5->zsa->base.stencil[1];
 392
 393                 cl_emit(&job->bcl, STENCIL_CONFIG, config) {
 394                         config.front_config = true;
 395                         config.back_config = !back->enabled;
 396
 397                         config.stencil_write_mask = front->writemask;
 398                         config.stencil_test_mask = front->valuemask;
 399
 400                         config.stencil_test_function = front->func;
 401                         config.stencil_pass_op = front->zpass_op;
 402                         config.depth_test_fail_op = front->zfail_op;
 403                         config.stencil_test_fail_op = front->fail_op;
 404
 405                         config.stencil_ref_value = vc5->stencil_ref.ref_value[0];
 406                 }
 407
 408                 if (back->enabled) {
 409                         cl_emit(&job->bcl, STENCIL_CONFIG, config) {
 410                                 config.front_config = false;
 411                                 config.back_config = true;
 412
 413                                 config.stencil_write_mask = back->writemask;
 414                                 config.stencil_test_mask = back->valuemask;
 415
 416                                 config.stencil_test_function = back->func;
 417                                 config.stencil_pass_op = back->zpass_op;
 418                                 config.depth_test_fail_op = back->zfail_op;
 419                                 config.stencil_test_fail_op = back->fail_op;
 420
 421                                 config.stencil_ref_value =
 422                                         vc5->stencil_ref.ref_value[1];
 423                         }
 424                 }
 425         }
 426
 427         if (vc5->dirty & VC5_DIRTY_FRAGTEX)
 428                 emit_textures(vc5, &vc5->fragtex);
 429
 430         if (vc5->dirty & VC5_DIRTY_VERTTEX)
 431                 emit_textures(vc5, &vc5->verttex);
 432
 433         if (vc5->dirty & VC5_DIRTY_FLAT_SHADE_FLAGS) {
 434                 /* XXX: Need to handle more than 24 entries. */
 435                 cl_emit(&job->bcl, FLAT_SHADE_FLAGS, flags) {
 436                         flags.varying_offset_v0 = 0;
 437
 438                         flags.flat_shade_flags_for_varyings_v024 =
 439                                 vc5->prog.fs->prog_data.fs->flat_shade_flags[0] & 0xfffff;
 440
 441                         if (vc5->rasterizer->base.flatshade) {
 442                                 flags.flat_shade_flags_for_varyings_v024 |=
 443                                         vc5->prog.fs->prog_data.fs->shade_model_flags[0] & 0xfffff;
 444                         }
 445                 }
 446         }
 447
 448         if (vc5->dirty & VC5_DIRTY_STREAMOUT) {
 449                 struct vc5_streamout_stateobj *so = &vc5->streamout;
 450
 451                 if (so->num_targets) {
 452                         cl_emit(&job->bcl, TRANSFORM_FEEDBACK_ENABLE, tfe) {
 453                                 tfe.number_of_32_bit_output_buffer_address_following =
 454                                         so->num_targets;
 455                                 tfe.number_of_16_bit_output_data_specs_following =
 456                                         vc5->prog.bind_vs->num_tf_specs;
 457                         };
 458
 459                         for (int i = 0; i < vc5->prog.bind_vs->num_tf_specs; i++) {
 460                                 cl_emit_prepacked(&job->bcl,
 461                                                   &vc5->prog.bind_vs->tf_specs[i]);
 462                         }
 463
 464                         for (int i = 0; i < so->num_targets; i++) {
 465                                 const struct pipe_stream_output_target *target =
 466                                         so->targets[i];
 467                                 struct vc5_resource *rsc =
 468                                         vc5_resource(target->buffer);
 469
 470                                 cl_emit(&job->bcl, TRANSFORM_FEEDBACK_OUTPUT_ADDRESS, output) {
 471                                         output.address =
 472                                                 cl_address(rsc->bo,
 473                                                            target->buffer_offset);
 474                                 };
 475
 476                                 vc5_job_add_write_resource(vc5->job,
 477                                                            target->buffer);
 478                                 /* XXX: buffer_size? */
 479                         }
 480                 } else {
 481                         /* XXX? */
 482                 }
 483         }
 484 }