src/gallium/drivers/vc4/vc4_state.c

   1 /*
   2  * Copyright © 2014 Broadcom
   3  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   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, sublicense,
   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 next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * 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 NONINFRINGEMENT.  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 DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 #include <stdio.h>
  26
  27 #include "pipe/p_state.h"
  28 #include "util/u_inlines.h"
  29 #include "util/u_math.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_helpers.h"
  32
  33 #include "vc4_context.h"
  34
  35 static void *
  36 vc4_generic_cso_state_create(const void *src, uint32_t size)
  37 {
  38         void *dst = calloc(1, size);
  39         if (!dst)
  40                 return NULL;
  41         memcpy(dst, src, size);
  42         return dst;
  43 }
  44
  45 static void
  46 vc4_generic_cso_state_delete(struct pipe_context *pctx, void *hwcso)
  47 {
  48         free(hwcso);
  49 }
  50
  51 static void
  52 vc4_set_blend_color(struct pipe_context *pctx,
  53                     const struct pipe_blend_color *blend_color)
  54 {
  55         struct vc4_context *vc4 = vc4_context(pctx);
  56         vc4->blend_color = *blend_color;
  57         vc4->dirty |= VC4_DIRTY_BLEND_COLOR;
  58 }
  59
  60 static void
  61 vc4_set_stencil_ref(struct pipe_context *pctx,
  62                     const struct pipe_stencil_ref *stencil_ref)
  63 {
  64         struct vc4_context *vc4 = vc4_context(pctx);
  65         vc4->stencil_ref =* stencil_ref;
  66         vc4->dirty |= VC4_DIRTY_STENCIL_REF;
  67 }
  68
  69 static void
  70 vc4_set_clip_state(struct pipe_context *pctx,
  71                    const struct pipe_clip_state *clip)
  72 {
  73         fprintf(stderr, "clip todo\n");
  74 }
  75
  76 static void
  77 vc4_set_sample_mask(struct pipe_context *pctx, unsigned sample_mask)
  78 {
  79         struct vc4_context *vc4 = vc4_context(pctx);
  80         vc4->sample_mask = (uint16_t)sample_mask;
  81         vc4->dirty |= VC4_DIRTY_SAMPLE_MASK;
  82 }
  83
  84 static void *
  85 vc4_create_rasterizer_state(struct pipe_context *pctx,
  86                             const struct pipe_rasterizer_state *cso)
  87 {
  88         struct vc4_rasterizer_state *so;
  89
  90         so = CALLOC_STRUCT(vc4_rasterizer_state);
  91         if (!so)
  92                 return NULL;
  93
  94         so->base = *cso;
  95
  96         if (!(cso->cull_face & PIPE_FACE_FRONT))
  97                 so->config_bits[0] |= VC4_CONFIG_BITS_ENABLE_PRIM_FRONT;
  98         if (!(cso->cull_face & PIPE_FACE_BACK))
  99                 so->config_bits[0] |= VC4_CONFIG_BITS_ENABLE_PRIM_BACK;
 100
 101         /* XXX: per_vertex */
 102         so->point_size = cso->point_size;
 103
 104         if (cso->front_ccw)
 105                 so->config_bits[0] |= VC4_CONFIG_BITS_CW_PRIMITIVES;
 106
 107         if (cso->offset_tri)
 108                 so->config_bits[0] |= VC4_CONFIG_BITS_ENABLE_DEPTH_OFFSET;
 109
 110         return so;
 111 }
 112
 113 /* Blend state is baked into shaders. */
 114 static void *
 115 vc4_create_blend_state(struct pipe_context *pctx,
 116                        const struct pipe_blend_state *cso)
 117 {
 118         return vc4_generic_cso_state_create(cso, sizeof(*cso));
 119 }
 120
 121 static void *
 122 vc4_create_depth_stencil_alpha_state(struct pipe_context *pctx,
 123                                      const struct pipe_depth_stencil_alpha_state *cso)
 124 {
 125         struct vc4_depth_stencil_alpha_state *so;
 126
 127         so = CALLOC_STRUCT(vc4_depth_stencil_alpha_state);
 128         if (!so)
 129                 return NULL;
 130
 131         so->base = *cso;
 132
 133         if (cso->depth.enabled) {
 134                 if (cso->depth.writemask) {
 135                         so->config_bits[1] |= VC4_CONFIG_BITS_Z_UPDATE;
 136                 }
 137                 so->config_bits[1] |= (cso->depth.func <<
 138                                        VC4_CONFIG_BITS_DEPTH_FUNC_SHIFT);
 139         } else {
 140                 so->config_bits[1] |= (PIPE_FUNC_ALWAYS <<
 141                                        VC4_CONFIG_BITS_DEPTH_FUNC_SHIFT);
 142         }
 143
 144         return so;
 145 }
 146
 147 static void
 148 vc4_set_polygon_stipple(struct pipe_context *pctx,
 149                         const struct pipe_poly_stipple *stipple)
 150 {
 151         struct vc4_context *vc4 = vc4_context(pctx);
 152         vc4->stipple = *stipple;
 153         vc4->dirty |= VC4_DIRTY_STIPPLE;
 154 }
 155
 156 static void
 157 vc4_set_scissor_states(struct pipe_context *pctx,
 158                        unsigned start_slot,
 159                        unsigned num_scissors,
 160                        const struct pipe_scissor_state *scissor)
 161 {
 162         struct vc4_context *vc4 = vc4_context(pctx);
 163
 164         vc4->scissor = *scissor;
 165         vc4->dirty |= VC4_DIRTY_SCISSOR;
 166 }
 167
 168 static void
 169 vc4_set_viewport_states(struct pipe_context *pctx,
 170                         unsigned start_slot,
 171                         unsigned num_viewports,
 172                         const struct pipe_viewport_state *viewport)
 173 {
 174         struct vc4_context *vc4 = vc4_context(pctx);
 175         vc4->viewport = *viewport;
 176         vc4->dirty |= VC4_DIRTY_VIEWPORT;
 177 }
 178
 179 static void
 180 vc4_set_vertex_buffers(struct pipe_context *pctx,
 181                        unsigned start_slot, unsigned count,
 182                        const struct pipe_vertex_buffer *vb)
 183 {
 184         struct vc4_context *vc4 = vc4_context(pctx);
 185         struct vc4_vertexbuf_stateobj *so = &vc4->vertexbuf;
 186
 187         util_set_vertex_buffers_mask(so->vb, &so->enabled_mask, vb,
 188                                      start_slot, count);
 189         so->count = util_last_bit(so->enabled_mask);
 190
 191         vc4->dirty |= VC4_DIRTY_VTXBUF;
 192 }
 193
 194 static void
 195 vc4_set_index_buffer(struct pipe_context *pctx,
 196                      const struct pipe_index_buffer *ib)
 197 {
 198         struct vc4_context *vc4 = vc4_context(pctx);
 199
 200         if (ib) {
 201                 pipe_resource_reference(&vc4->indexbuf.buffer, ib->buffer);
 202                 vc4->indexbuf.index_size = ib->index_size;
 203                 vc4->indexbuf.offset = ib->offset;
 204                 vc4->indexbuf.user_buffer = ib->user_buffer;
 205         } else {
 206                 pipe_resource_reference(&vc4->indexbuf.buffer, NULL);
 207         }
 208
 209         vc4->dirty |= VC4_DIRTY_INDEXBUF;
 210 }
 211
 212 static void
 213 vc4_blend_state_bind(struct pipe_context *pctx, void *hwcso)
 214 {
 215         struct vc4_context *vc4 = vc4_context(pctx);
 216         vc4->blend = hwcso;
 217         vc4->dirty |= VC4_DIRTY_BLEND;
 218 }
 219
 220 static void
 221 vc4_rasterizer_state_bind(struct pipe_context *pctx, void *hwcso)
 222 {
 223         struct vc4_context *vc4 = vc4_context(pctx);
 224         vc4->rasterizer = hwcso;
 225         vc4->dirty |= VC4_DIRTY_RASTERIZER;
 226 }
 227
 228 static void
 229 vc4_zsa_state_bind(struct pipe_context *pctx, void *hwcso)
 230 {
 231         struct vc4_context *vc4 = vc4_context(pctx);
 232         vc4->zsa = hwcso;
 233         vc4->dirty |= VC4_DIRTY_ZSA;
 234 }
 235
 236 static void *
 237 vc4_vertex_state_create(struct pipe_context *pctx, unsigned num_elements,
 238                         const struct pipe_vertex_element *elements)
 239 {
 240         struct vc4_vertex_stateobj *so = CALLOC_STRUCT(vc4_vertex_stateobj);
 241
 242         if (!so)
 243                 return NULL;
 244
 245         memcpy(so->pipe, elements, sizeof(*elements) * num_elements);
 246         so->num_elements = num_elements;
 247
 248         return so;
 249 }
 250
 251 static void
 252 vc4_vertex_state_bind(struct pipe_context *pctx, void *hwcso)
 253 {
 254         struct vc4_context *vc4 = vc4_context(pctx);
 255         vc4->vtx = hwcso;
 256         vc4->dirty |= VC4_DIRTY_VTXSTATE;
 257 }
 258
 259 static void
 260 vc4_set_constant_buffer(struct pipe_context *pctx, uint shader, uint index,
 261                         struct pipe_constant_buffer *cb)
 262 {
 263         struct vc4_context *vc4 = vc4_context(pctx);
 264         struct vc4_constbuf_stateobj *so = &vc4->constbuf[shader];
 265
 266         assert(index == 0);
 267
 268         /* Note that the state tracker can unbind constant buffers by
 269          * passing NULL here.
 270          */
 271         if (unlikely(!cb)) {
 272                 so->enabled_mask &= ~(1 << index);
 273                 so->dirty_mask &= ~(1 << index);
 274                 return;
 275         }
 276
 277         assert(!cb->buffer);
 278         so->cb[index].buffer_offset = cb->buffer_offset;
 279         so->cb[index].buffer_size   = cb->buffer_size;
 280         so->cb[index].user_buffer   = cb->user_buffer;
 281
 282         so->enabled_mask |= 1 << index;
 283         so->dirty_mask |= 1 << index;
 284         vc4->dirty |= VC4_DIRTY_CONSTBUF;
 285 }
 286
 287 static void
 288 vc4_set_framebuffer_state(struct pipe_context *pctx,
 289                           const struct pipe_framebuffer_state *framebuffer)
 290 {
 291         struct vc4_context *vc4 = vc4_context(pctx);
 292         struct pipe_framebuffer_state *cso = &vc4->framebuffer;
 293         unsigned i;
 294
 295         vc4_flush(pctx);
 296
 297         for (i = 0; i < framebuffer->nr_cbufs; i++)
 298                 pipe_surface_reference(&cso->cbufs[i], framebuffer->cbufs[i]);
 299         for (; i < vc4->framebuffer.nr_cbufs; i++)
 300                 pipe_surface_reference(&cso->cbufs[i], NULL);
 301
 302         cso->nr_cbufs = framebuffer->nr_cbufs;
 303
 304         cso->width = framebuffer->width;
 305         cso->height = framebuffer->height;
 306
 307         pipe_surface_reference(&cso->zsbuf, framebuffer->zsbuf);
 308
 309         vc4->dirty |= VC4_DIRTY_FRAMEBUFFER;
 310 }
 311
 312 static struct vc4_texture_stateobj *
 313 vc4_get_stage_tex(struct vc4_context *vc4, unsigned shader)
 314 {
 315         vc4->dirty |= VC4_DIRTY_TEXSTATE;
 316
 317         switch (shader) {
 318         case PIPE_SHADER_FRAGMENT:
 319                 vc4->dirty |= VC4_DIRTY_FRAGTEX;
 320                 return &vc4->fragtex;
 321                 break;
 322         case PIPE_SHADER_VERTEX:
 323                 vc4->dirty |= VC4_DIRTY_VERTTEX;
 324                 return &vc4->verttex;
 325                 break;
 326         default:
 327                 fprintf(stderr, "Unknown shader target %d\n", shader);
 328                 abort();
 329         }
 330 }
 331
 332 static void *
 333 vc4_create_sampler_state(struct pipe_context *pctx,
 334                          const struct pipe_sampler_state *cso)
 335 {
 336         return vc4_generic_cso_state_create(cso, sizeof(*cso));
 337 }
 338
 339 static void
 340 vc4_sampler_states_bind(struct pipe_context *pctx,
 341                         unsigned shader, unsigned start,
 342                         unsigned nr, void **hwcso)
 343 {
 344         struct vc4_context *vc4 = vc4_context(pctx);
 345         struct vc4_texture_stateobj *stage_tex = vc4_get_stage_tex(vc4, shader);
 346
 347         assert(start == 0);
 348         unsigned i;
 349         unsigned new_nr = 0;
 350
 351         for (i = 0; i < nr; i++) {
 352                 if (hwcso[i])
 353                         new_nr = i + 1;
 354                 stage_tex->samplers[i] = hwcso[i];
 355                 stage_tex->dirty_samplers |= (1 << i);
 356         }
 357
 358         for (; i < stage_tex->num_samplers; i++) {
 359                 stage_tex->samplers[i] = NULL;
 360                 stage_tex->dirty_samplers |= (1 << i);
 361         }
 362
 363         stage_tex->num_samplers = new_nr;
 364 }
 365
 366 static struct pipe_sampler_view *
 367 vc4_create_sampler_view(struct pipe_context *pctx, struct pipe_resource *prsc,
 368                         const struct pipe_sampler_view *cso)
 369 {
 370         struct pipe_sampler_view *so = malloc(sizeof(*so));
 371
 372         if (!so)
 373                 return NULL;
 374
 375         *so = *cso;
 376         pipe_reference(NULL, &prsc->reference);
 377         so->texture = prsc;
 378         so->reference.count = 1;
 379         so->context = pctx;
 380
 381         return so;
 382 }
 383
 384 static void
 385 vc4_sampler_view_destroy(struct pipe_context *pctx,
 386                          struct pipe_sampler_view *view)
 387 {
 388         pipe_resource_reference(&view->texture, NULL);
 389         free(view);
 390 }
 391
 392 static void
 393 vc4_set_sampler_views(struct pipe_context *pctx, unsigned shader,
 394                       unsigned start, unsigned nr,
 395                       struct pipe_sampler_view **views)
 396 {
 397         struct vc4_context *vc4 = vc4_context(pctx);
 398         struct vc4_texture_stateobj *stage_tex = vc4_get_stage_tex(vc4, shader);
 399         unsigned i;
 400         unsigned new_nr = 0;
 401
 402         assert(start == 0);
 403
 404         vc4->dirty |= VC4_DIRTY_TEXSTATE;
 405
 406         for (i = 0; i < nr; i++) {
 407                 if (views[i])
 408                         new_nr = i + 1;
 409                 pipe_sampler_view_reference(&stage_tex->textures[i], views[i]);
 410                 stage_tex->dirty_samplers |= (1 << i);
 411         }
 412
 413         for (; i < stage_tex->num_textures; i++) {
 414                 pipe_sampler_view_reference(&stage_tex->textures[i], NULL);
 415                 stage_tex->dirty_samplers |= (1 << i);
 416         }
 417
 418         stage_tex->num_textures = new_nr;
 419 }
 420
 421 void
 422 vc4_state_init(struct pipe_context *pctx)
 423 {
 424         pctx->set_blend_color = vc4_set_blend_color;
 425         pctx->set_stencil_ref = vc4_set_stencil_ref;
 426         pctx->set_clip_state = vc4_set_clip_state;
 427         pctx->set_sample_mask = vc4_set_sample_mask;
 428         pctx->set_constant_buffer = vc4_set_constant_buffer;
 429         pctx->set_framebuffer_state = vc4_set_framebuffer_state;
 430         pctx->set_polygon_stipple = vc4_set_polygon_stipple;
 431         pctx->set_scissor_states = vc4_set_scissor_states;
 432         pctx->set_viewport_states = vc4_set_viewport_states;
 433
 434         pctx->set_vertex_buffers = vc4_set_vertex_buffers;
 435         pctx->set_index_buffer = vc4_set_index_buffer;
 436
 437         pctx->create_blend_state = vc4_create_blend_state;
 438         pctx->bind_blend_state = vc4_blend_state_bind;
 439         pctx->delete_blend_state = vc4_generic_cso_state_delete;
 440
 441         pctx->create_rasterizer_state = vc4_create_rasterizer_state;
 442         pctx->bind_rasterizer_state = vc4_rasterizer_state_bind;
 443         pctx->delete_rasterizer_state = vc4_generic_cso_state_delete;
 444
 445         pctx->create_depth_stencil_alpha_state = vc4_create_depth_stencil_alpha_state;
 446         pctx->bind_depth_stencil_alpha_state = vc4_zsa_state_bind;
 447         pctx->delete_depth_stencil_alpha_state = vc4_generic_cso_state_delete;
 448
 449         pctx->create_vertex_elements_state = vc4_vertex_state_create;
 450         pctx->delete_vertex_elements_state = vc4_generic_cso_state_delete;
 451         pctx->bind_vertex_elements_state = vc4_vertex_state_bind;
 452
 453         pctx->create_sampler_state = vc4_create_sampler_state;
 454         pctx->delete_sampler_state = vc4_generic_cso_state_delete;
 455         pctx->bind_sampler_states = vc4_sampler_states_bind;
 456
 457         pctx->create_sampler_view = vc4_create_sampler_view;
 458         pctx->sampler_view_destroy = vc4_sampler_view_destroy;
 459         pctx->set_sampler_views = vc4_set_sampler_views;
 460 }