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         so->config_bits[2] |= VC4_CONFIG_BITS_EARLY_Z_UPDATE;
 111
 112         return so;
 113 }
 114
 115 /* Blend state is baked into shaders. */
 116 static void *
 117 vc4_create_blend_state(struct pipe_context *pctx,
 118                        const struct pipe_blend_state *cso)
 119 {
 120         return vc4_generic_cso_state_create(cso, sizeof(*cso));
 121 }
 122
 123 static void *
 124 vc4_create_depth_stencil_alpha_state(struct pipe_context *pctx,
 125                                      const struct pipe_depth_stencil_alpha_state *cso)
 126 {
 127         return vc4_generic_cso_state_create(cso, sizeof(*cso));
 128 }
 129
 130 static void
 131 vc4_set_polygon_stipple(struct pipe_context *pctx,
 132                         const struct pipe_poly_stipple *stipple)
 133 {
 134         struct vc4_context *vc4 = vc4_context(pctx);
 135         vc4->stipple = *stipple;
 136         vc4->dirty |= VC4_DIRTY_STIPPLE;
 137 }
 138
 139 static void
 140 vc4_set_scissor_states(struct pipe_context *pctx,
 141                        unsigned start_slot,
 142                        unsigned num_scissors,
 143                        const struct pipe_scissor_state *scissor)
 144 {
 145         struct vc4_context *vc4 = vc4_context(pctx);
 146
 147         vc4->scissor = *scissor;
 148         vc4->dirty |= VC4_DIRTY_SCISSOR;
 149 }
 150
 151 static void
 152 vc4_set_viewport_states(struct pipe_context *pctx,
 153                         unsigned start_slot,
 154                         unsigned num_viewports,
 155                         const struct pipe_viewport_state *viewport)
 156 {
 157         struct vc4_context *vc4 = vc4_context(pctx);
 158         vc4->viewport = *viewport;
 159         vc4->dirty |= VC4_DIRTY_VIEWPORT;
 160 }
 161
 162 static void
 163 vc4_set_vertex_buffers(struct pipe_context *pctx,
 164                        unsigned start_slot, unsigned count,
 165                        const struct pipe_vertex_buffer *vb)
 166 {
 167         struct vc4_context *vc4 = vc4_context(pctx);
 168         struct vc4_vertexbuf_stateobj *so = &vc4->vertexbuf;
 169
 170         util_set_vertex_buffers_mask(so->vb, &so->enabled_mask, vb,
 171                                      start_slot, count);
 172         so->count = util_last_bit(so->enabled_mask);
 173
 174         vc4->dirty |= VC4_DIRTY_VTXBUF;
 175 }
 176
 177 static void
 178 vc4_set_index_buffer(struct pipe_context *pctx,
 179                      const struct pipe_index_buffer *ib)
 180 {
 181         struct vc4_context *vc4 = vc4_context(pctx);
 182
 183         if (ib) {
 184                 pipe_resource_reference(&vc4->indexbuf.buffer, ib->buffer);
 185                 vc4->indexbuf.index_size = ib->index_size;
 186                 vc4->indexbuf.offset = ib->offset;
 187                 vc4->indexbuf.user_buffer = ib->user_buffer;
 188         } else {
 189                 pipe_resource_reference(&vc4->indexbuf.buffer, NULL);
 190         }
 191
 192         vc4->dirty |= VC4_DIRTY_INDEXBUF;
 193 }
 194
 195 static void
 196 vc4_blend_state_bind(struct pipe_context *pctx, void *hwcso)
 197 {
 198         struct vc4_context *vc4 = vc4_context(pctx);
 199         vc4->blend = hwcso;
 200         vc4->dirty |= VC4_DIRTY_BLEND;
 201 }
 202
 203 static void
 204 vc4_rasterizer_state_bind(struct pipe_context *pctx, void *hwcso)
 205 {
 206         struct vc4_context *vc4 = vc4_context(pctx);
 207         vc4->rasterizer = hwcso;
 208         vc4->dirty |= VC4_DIRTY_RASTERIZER;
 209 }
 210
 211 static void
 212 vc4_zsa_state_bind(struct pipe_context *pctx, void *hwcso)
 213 {
 214         struct vc4_context *vc4 = vc4_context(pctx);
 215         vc4->zsa = hwcso;
 216         vc4->dirty |= VC4_DIRTY_ZSA;
 217 }
 218
 219 static void *
 220 vc4_vertex_state_create(struct pipe_context *pctx, unsigned num_elements,
 221                         const struct pipe_vertex_element *elements)
 222 {
 223         struct vc4_vertex_stateobj *so = CALLOC_STRUCT(vc4_vertex_stateobj);
 224
 225         if (!so)
 226                 return NULL;
 227
 228         memcpy(so->pipe, elements, sizeof(*elements) * num_elements);
 229         so->num_elements = num_elements;
 230
 231         return so;
 232 }
 233
 234 static void
 235 vc4_vertex_state_bind(struct pipe_context *pctx, void *hwcso)
 236 {
 237         struct vc4_context *vc4 = vc4_context(pctx);
 238         vc4->vtx = hwcso;
 239         vc4->dirty |= VC4_DIRTY_VTXSTATE;
 240 }
 241
 242 static void
 243 vc4_set_constant_buffer(struct pipe_context *pctx, uint shader, uint index,
 244                         struct pipe_constant_buffer *cb)
 245 {
 246         struct vc4_context *vc4 = vc4_context(pctx);
 247         struct vc4_constbuf_stateobj *so = &vc4->constbuf[shader];
 248
 249         assert(index == 0);
 250
 251         /* Note that the state tracker can unbind constant buffers by
 252          * passing NULL here.
 253          */
 254         if (unlikely(!cb)) {
 255                 so->enabled_mask &= ~(1 << index);
 256                 so->dirty_mask &= ~(1 << index);
 257                 return;
 258         }
 259
 260         assert(!cb->buffer);
 261         so->cb[index].buffer_offset = cb->buffer_offset;
 262         so->cb[index].buffer_size   = cb->buffer_size;
 263         so->cb[index].user_buffer   = cb->user_buffer;
 264
 265         so->enabled_mask |= 1 << index;
 266         so->dirty_mask |= 1 << index;
 267         vc4->dirty |= VC4_DIRTY_CONSTBUF;
 268 }
 269
 270 static void
 271 vc4_set_framebuffer_state(struct pipe_context *pctx,
 272                           const struct pipe_framebuffer_state *framebuffer)
 273 {
 274         struct vc4_context *vc4 = vc4_context(pctx);
 275         struct pipe_framebuffer_state *cso = &vc4->framebuffer;
 276         unsigned i;
 277
 278         vc4_flush(pctx);
 279
 280         for (i = 0; i < framebuffer->nr_cbufs; i++)
 281                 pipe_surface_reference(&cso->cbufs[i], framebuffer->cbufs[i]);
 282         for (; i < vc4->framebuffer.nr_cbufs; i++)
 283                 pipe_surface_reference(&cso->cbufs[i], NULL);
 284
 285         cso->nr_cbufs = framebuffer->nr_cbufs;
 286
 287         cso->width = framebuffer->width;
 288         cso->height = framebuffer->height;
 289
 290         pipe_surface_reference(&cso->zsbuf, framebuffer->zsbuf);
 291
 292         vc4->dirty |= VC4_DIRTY_FRAMEBUFFER;
 293 }
 294
 295 static struct vc4_texture_stateobj *
 296 vc4_get_stage_tex(struct vc4_context *vc4, unsigned shader)
 297 {
 298         vc4->dirty |= VC4_DIRTY_TEXSTATE;
 299
 300         switch (shader) {
 301         case PIPE_SHADER_FRAGMENT:
 302                 vc4->dirty |= VC4_DIRTY_FRAGTEX;
 303                 return &vc4->fragtex;
 304                 break;
 305         case PIPE_SHADER_VERTEX:
 306                 vc4->dirty |= VC4_DIRTY_VERTTEX;
 307                 return &vc4->verttex;
 308                 break;
 309         default:
 310                 fprintf(stderr, "Unknown shader target %d\n", shader);
 311                 abort();
 312         }
 313 }
 314
 315 static void *
 316 vc4_create_sampler_state(struct pipe_context *pctx,
 317                          const struct pipe_sampler_state *cso)
 318 {
 319         return vc4_generic_cso_state_create(cso, sizeof(*cso));
 320 }
 321
 322 static void
 323 vc4_sampler_states_bind(struct pipe_context *pctx,
 324                         unsigned shader, unsigned start,
 325                         unsigned nr, void **hwcso)
 326 {
 327         struct vc4_context *vc4 = vc4_context(pctx);
 328         struct vc4_texture_stateobj *stage_tex = vc4_get_stage_tex(vc4, shader);
 329
 330         assert(start == 0);
 331         unsigned i;
 332         unsigned new_nr = 0;
 333
 334         for (i = 0; i < nr; i++) {
 335                 if (hwcso[i])
 336                         new_nr = i + 1;
 337                 stage_tex->samplers[i] = hwcso[i];
 338                 stage_tex->dirty_samplers |= (1 << i);
 339         }
 340
 341         for (; i < stage_tex->num_samplers; i++) {
 342                 stage_tex->samplers[i] = NULL;
 343                 stage_tex->dirty_samplers |= (1 << i);
 344         }
 345
 346         stage_tex->num_samplers = new_nr;
 347 }
 348
 349 static struct pipe_sampler_view *
 350 vc4_create_sampler_view(struct pipe_context *pctx, struct pipe_resource *prsc,
 351                         const struct pipe_sampler_view *cso)
 352 {
 353         struct pipe_sampler_view *so = malloc(sizeof(*so));
 354
 355         if (!so)
 356                 return NULL;
 357
 358         *so = *cso;
 359         pipe_reference(NULL, &prsc->reference);
 360         so->texture = prsc;
 361         so->reference.count = 1;
 362         so->context = pctx;
 363
 364         return so;
 365 }
 366
 367 static void
 368 vc4_sampler_view_destroy(struct pipe_context *pctx,
 369                          struct pipe_sampler_view *view)
 370 {
 371         pipe_resource_reference(&view->texture, NULL);
 372         free(view);
 373 }
 374
 375 static void
 376 vc4_set_sampler_views(struct pipe_context *pctx, unsigned shader,
 377                       unsigned start, unsigned nr,
 378                       struct pipe_sampler_view **views)
 379 {
 380         struct vc4_context *vc4 = vc4_context(pctx);
 381         struct vc4_texture_stateobj *stage_tex = vc4_get_stage_tex(vc4, shader);
 382         unsigned i;
 383         unsigned new_nr = 0;
 384
 385         assert(start == 0);
 386
 387         vc4->dirty |= VC4_DIRTY_TEXSTATE;
 388
 389         for (i = 0; i < nr; i++) {
 390                 if (views[i])
 391                         new_nr = i + 1;
 392                 pipe_sampler_view_reference(&stage_tex->textures[i], views[i]);
 393                 stage_tex->dirty_samplers |= (1 << i);
 394         }
 395
 396         for (; i < stage_tex->num_textures; i++) {
 397                 pipe_sampler_view_reference(&stage_tex->textures[i], NULL);
 398                 stage_tex->dirty_samplers |= (1 << i);
 399         }
 400
 401         stage_tex->num_textures = new_nr;
 402 }
 403
 404 void
 405 vc4_state_init(struct pipe_context *pctx)
 406 {
 407         pctx->set_blend_color = vc4_set_blend_color;
 408         pctx->set_stencil_ref = vc4_set_stencil_ref;
 409         pctx->set_clip_state = vc4_set_clip_state;
 410         pctx->set_sample_mask = vc4_set_sample_mask;
 411         pctx->set_constant_buffer = vc4_set_constant_buffer;
 412         pctx->set_framebuffer_state = vc4_set_framebuffer_state;
 413         pctx->set_polygon_stipple = vc4_set_polygon_stipple;
 414         pctx->set_scissor_states = vc4_set_scissor_states;
 415         pctx->set_viewport_states = vc4_set_viewport_states;
 416
 417         pctx->set_vertex_buffers = vc4_set_vertex_buffers;
 418         pctx->set_index_buffer = vc4_set_index_buffer;
 419
 420         pctx->create_blend_state = vc4_create_blend_state;
 421         pctx->bind_blend_state = vc4_blend_state_bind;
 422         pctx->delete_blend_state = vc4_generic_cso_state_delete;
 423
 424         pctx->create_rasterizer_state = vc4_create_rasterizer_state;
 425         pctx->bind_rasterizer_state = vc4_rasterizer_state_bind;
 426         pctx->delete_rasterizer_state = vc4_generic_cso_state_delete;
 427
 428         pctx->create_depth_stencil_alpha_state = vc4_create_depth_stencil_alpha_state;
 429         pctx->bind_depth_stencil_alpha_state = vc4_zsa_state_bind;
 430         pctx->delete_depth_stencil_alpha_state = vc4_generic_cso_state_delete;
 431
 432         pctx->create_vertex_elements_state = vc4_vertex_state_create;
 433         pctx->delete_vertex_elements_state = vc4_generic_cso_state_delete;
 434         pctx->bind_vertex_elements_state = vc4_vertex_state_bind;
 435
 436         pctx->create_sampler_state = vc4_create_sampler_state;
 437         pctx->delete_sampler_state = vc4_generic_cso_state_delete;
 438         pctx->bind_sampler_states = vc4_sampler_states_bind;
 439
 440         pctx->create_sampler_view = vc4_create_sampler_view;
 441         pctx->sampler_view_destroy = vc4_sampler_view_destroy;
 442         pctx->set_sampler_views = vc4_set_sampler_views;
 443 }