src/gallium/drivers/freedreno/freedreno_state.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29 #include "pipe/p_state.h"
  30 #include "util/u_string.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_helpers.h"
  33
  34 #include "freedreno_state.h"
  35 #include "freedreno_context.h"
  36 #include "freedreno_resource.h"
  37 #include "freedreno_texture.h"
  38 #include "freedreno_gmem.h"
  39 #include "freedreno_util.h"
  40
  41 /* All the generic state handling.. In case of CSO's that are specific
  42  * to the GPU version, when the bind and the delete are common they can
  43  * go in here.
  44  */
  45
  46 static void
  47 fd_set_blend_color(struct pipe_context *pctx,
  48                 const struct pipe_blend_color *blend_color)
  49 {
  50         struct fd_context *ctx = fd_context(pctx);
  51         ctx->blend_color = *blend_color;
  52         ctx->dirty |= FD_DIRTY_BLEND_COLOR;
  53 }
  54
  55 static void
  56 fd_set_stencil_ref(struct pipe_context *pctx,
  57                 const struct pipe_stencil_ref *stencil_ref)
  58 {
  59         struct fd_context *ctx = fd_context(pctx);
  60         ctx->stencil_ref =* stencil_ref;
  61         ctx->dirty |= FD_DIRTY_STENCIL_REF;
  62 }
  63
  64 static void
  65 fd_set_clip_state(struct pipe_context *pctx,
  66                 const struct pipe_clip_state *clip)
  67 {
  68         DBG("TODO: ");
  69 }
  70
  71 static void
  72 fd_set_sample_mask(struct pipe_context *pctx, unsigned sample_mask)
  73 {
  74         struct fd_context *ctx = fd_context(pctx);
  75         ctx->sample_mask = (uint16_t)sample_mask;
  76         ctx->dirty |= FD_DIRTY_SAMPLE_MASK;
  77 }
  78
  79 /* notes from calim on #dri-devel:
  80  * index==0 will be non-UBO (ie. glUniformXYZ()) all packed together padded
  81  * out to vec4's
  82  * I should be able to consider that I own the user_ptr until the next
  83  * set_constant_buffer() call, at which point I don't really care about the
  84  * previous values.
  85  * index>0 will be UBO's.. well, I'll worry about that later
  86  */
  87 static void
  88 fd_set_constant_buffer(struct pipe_context *pctx, uint shader, uint index,
  89                 struct pipe_constant_buffer *cb)
  90 {
  91         struct fd_context *ctx = fd_context(pctx);
  92         struct fd_constbuf_stateobj *so = &ctx->constbuf[shader];
  93
  94         /* Note that the state tracker can unbind constant buffers by
  95          * passing NULL here.
  96          */
  97         if (unlikely(!cb)) {
  98                 so->enabled_mask &= ~(1 << index);
  99                 so->dirty_mask &= ~(1 << index);
 100                 pipe_resource_reference(&so->cb[index].buffer, NULL);
 101                 return;
 102         }
 103
 104         pipe_resource_reference(&so->cb[index].buffer, cb->buffer);
 105         so->cb[index].buffer_offset = cb->buffer_offset;
 106         so->cb[index].buffer_size   = cb->buffer_size;
 107         so->cb[index].user_buffer   = cb->user_buffer;
 108
 109         so->enabled_mask |= 1 << index;
 110         so->dirty_mask |= 1 << index;
 111         ctx->dirty |= FD_DIRTY_CONSTBUF;
 112 }
 113
 114 static void
 115 fd_set_framebuffer_state(struct pipe_context *pctx,
 116                 const struct pipe_framebuffer_state *framebuffer)
 117 {
 118         struct fd_context *ctx = fd_context(pctx);
 119         struct pipe_framebuffer_state *cso = &ctx->framebuffer;
 120
 121         DBG("%d: cbufs[0]=%p, zsbuf=%p", ctx->needs_flush,
 122                         framebuffer->cbufs[0], framebuffer->zsbuf);
 123
 124         fd_context_render(pctx);
 125
 126         if ((cso->width != framebuffer->width) ||
 127                         (cso->height != framebuffer->height))
 128                 ctx->needs_rb_fbd = true;
 129
 130         util_copy_framebuffer_state(cso, framebuffer);
 131
 132         ctx->dirty |= FD_DIRTY_FRAMEBUFFER;
 133
 134         ctx->disabled_scissor.minx = 0;
 135         ctx->disabled_scissor.miny = 0;
 136         ctx->disabled_scissor.maxx = cso->width;
 137         ctx->disabled_scissor.maxy = cso->height;
 138
 139         ctx->dirty |= FD_DIRTY_SCISSOR;
 140 }
 141
 142 static void
 143 fd_set_polygon_stipple(struct pipe_context *pctx,
 144                 const struct pipe_poly_stipple *stipple)
 145 {
 146         struct fd_context *ctx = fd_context(pctx);
 147         ctx->stipple = *stipple;
 148         ctx->dirty |= FD_DIRTY_STIPPLE;
 149 }
 150
 151 static void
 152 fd_set_scissor_states(struct pipe_context *pctx,
 153                 unsigned start_slot,
 154                 unsigned num_scissors,
 155                 const struct pipe_scissor_state *scissor)
 156 {
 157         struct fd_context *ctx = fd_context(pctx);
 158
 159         ctx->scissor = *scissor;
 160         ctx->dirty |= FD_DIRTY_SCISSOR;
 161 }
 162
 163 static void
 164 fd_set_viewport_states(struct pipe_context *pctx,
 165                 unsigned start_slot,
 166                 unsigned num_viewports,
 167                 const struct pipe_viewport_state *viewport)
 168 {
 169         struct fd_context *ctx = fd_context(pctx);
 170         ctx->viewport = *viewport;
 171         ctx->dirty |= FD_DIRTY_VIEWPORT;
 172 }
 173
 174 static void
 175 fd_set_vertex_buffers(struct pipe_context *pctx,
 176                 unsigned start_slot, unsigned count,
 177                 const struct pipe_vertex_buffer *vb)
 178 {
 179         struct fd_context *ctx = fd_context(pctx);
 180         struct fd_vertexbuf_stateobj *so = &ctx->vtx.vertexbuf;
 181         int i;
 182
 183         /* on a2xx, pitch is encoded in the vtx fetch instruction, so
 184          * we need to mark VTXSTATE as dirty as well to trigger patching
 185          * and re-emitting the vtx shader:
 186          */
 187         for (i = 0; i < count; i++) {
 188                 bool new_enabled = vb && (vb[i].buffer || vb[i].user_buffer);
 189                 bool old_enabled = so->vb[i].buffer || so->vb[i].user_buffer;
 190                 uint32_t new_stride = vb ? vb[i].stride : 0;
 191                 uint32_t old_stride = so->vb[i].stride;
 192                 if ((new_enabled != old_enabled) || (new_stride != old_stride)) {
 193                         ctx->dirty |= FD_DIRTY_VTXSTATE;
 194                         break;
 195                 }
 196         }
 197
 198         util_set_vertex_buffers_mask(so->vb, &so->enabled_mask, vb, start_slot, count);
 199         so->count = util_last_bit(so->enabled_mask);
 200
 201         ctx->dirty |= FD_DIRTY_VTXBUF;
 202 }
 203
 204 static void
 205 fd_set_index_buffer(struct pipe_context *pctx,
 206                 const struct pipe_index_buffer *ib)
 207 {
 208         struct fd_context *ctx = fd_context(pctx);
 209
 210         if (ib) {
 211                 pipe_resource_reference(&ctx->indexbuf.buffer, ib->buffer);
 212                 ctx->indexbuf.index_size = ib->index_size;
 213                 ctx->indexbuf.offset = ib->offset;
 214                 ctx->indexbuf.user_buffer = ib->user_buffer;
 215         } else {
 216                 pipe_resource_reference(&ctx->indexbuf.buffer, NULL);
 217         }
 218
 219         ctx->dirty |= FD_DIRTY_INDEXBUF;
 220 }
 221
 222 static void
 223 fd_blend_state_bind(struct pipe_context *pctx, void *hwcso)
 224 {
 225         struct fd_context *ctx = fd_context(pctx);
 226         ctx->blend = hwcso;
 227         ctx->dirty |= FD_DIRTY_BLEND;
 228 }
 229
 230 static void
 231 fd_blend_state_delete(struct pipe_context *pctx, void *hwcso)
 232 {
 233         FREE(hwcso);
 234 }
 235
 236 static void
 237 fd_rasterizer_state_bind(struct pipe_context *pctx, void *hwcso)
 238 {
 239         struct fd_context *ctx = fd_context(pctx);
 240         struct pipe_scissor_state *old_scissor = fd_context_get_scissor(ctx);
 241
 242         ctx->rasterizer = hwcso;
 243         ctx->dirty |= FD_DIRTY_RASTERIZER;
 244
 245         /* if scissor enable bit changed we need to mark scissor
 246          * state as dirty as well:
 247          * NOTE: we can do a shallow compare, since we only care
 248          * if it changed to/from &ctx->disable_scissor
 249          */
 250         if (old_scissor != fd_context_get_scissor(ctx))
 251                 ctx->dirty |= FD_DIRTY_SCISSOR;
 252 }
 253
 254 static void
 255 fd_rasterizer_state_delete(struct pipe_context *pctx, void *hwcso)
 256 {
 257         FREE(hwcso);
 258 }
 259
 260 static void
 261 fd_zsa_state_bind(struct pipe_context *pctx, void *hwcso)
 262 {
 263         struct fd_context *ctx = fd_context(pctx);
 264         ctx->zsa = hwcso;
 265         ctx->dirty |= FD_DIRTY_ZSA;
 266 }
 267
 268 static void
 269 fd_zsa_state_delete(struct pipe_context *pctx, void *hwcso)
 270 {
 271         FREE(hwcso);
 272 }
 273
 274 static void *
 275 fd_vertex_state_create(struct pipe_context *pctx, unsigned num_elements,
 276                 const struct pipe_vertex_element *elements)
 277 {
 278         struct fd_vertex_stateobj *so = CALLOC_STRUCT(fd_vertex_stateobj);
 279
 280         if (!so)
 281                 return NULL;
 282
 283         memcpy(so->pipe, elements, sizeof(*elements) * num_elements);
 284         so->num_elements = num_elements;
 285
 286         return so;
 287 }
 288
 289 static void
 290 fd_vertex_state_delete(struct pipe_context *pctx, void *hwcso)
 291 {
 292         FREE(hwcso);
 293 }
 294
 295 static void
 296 fd_vertex_state_bind(struct pipe_context *pctx, void *hwcso)
 297 {
 298         struct fd_context *ctx = fd_context(pctx);
 299         ctx->vtx.vtx = hwcso;
 300         ctx->dirty |= FD_DIRTY_VTXSTATE;
 301 }
 302
 303 static struct pipe_stream_output_target *
 304 fd_create_stream_output_target(struct pipe_context *pctx,
 305                 struct pipe_resource *prsc, unsigned buffer_offset,
 306                 unsigned buffer_size)
 307 {
 308         struct pipe_stream_output_target *target;
 309
 310         target = CALLOC_STRUCT(pipe_stream_output_target);
 311         if (!target)
 312                 return NULL;
 313
 314         pipe_reference_init(&target->reference, 1);
 315         pipe_resource_reference(&target->buffer, prsc);
 316
 317         target->context = pctx;
 318         target->buffer_offset = buffer_offset;
 319         target->buffer_size = buffer_size;
 320
 321         return target;
 322 }
 323
 324 static void
 325 fd_stream_output_target_destroy(struct pipe_context *pctx,
 326                 struct pipe_stream_output_target *target)
 327 {
 328         pipe_resource_reference(&target->buffer, NULL);
 329         FREE(target);
 330 }
 331
 332 static void
 333 fd_set_stream_output_targets(struct pipe_context *pctx,
 334                 unsigned num_targets, struct pipe_stream_output_target **targets,
 335                 const unsigned *offsets)
 336 {
 337         struct fd_context *ctx = fd_context(pctx);
 338         struct fd_streamout_stateobj *so = &ctx->streamout;
 339         unsigned i;
 340
 341         debug_assert(num_targets <= ARRAY_SIZE(so->targets));
 342
 343         for (i = 0; i < num_targets; i++) {
 344                 boolean changed = targets[i] != so->targets[i];
 345                 boolean append = (offsets[i] == (unsigned)-1);
 346
 347                 if (!changed && append)
 348                         continue;
 349
 350                 so->offsets[i] = 0;
 351
 352                 pipe_so_target_reference(&so->targets[i], targets[i]);
 353         }
 354
 355         for (; i < so->num_targets; i++) {
 356                 pipe_so_target_reference(&so->targets[i], NULL);
 357         }
 358
 359         so->num_targets = num_targets;
 360
 361         ctx->dirty |= FD_DIRTY_STREAMOUT;
 362 }
 363
 364 void
 365 fd_state_init(struct pipe_context *pctx)
 366 {
 367         pctx->set_blend_color = fd_set_blend_color;
 368         pctx->set_stencil_ref = fd_set_stencil_ref;
 369         pctx->set_clip_state = fd_set_clip_state;
 370         pctx->set_sample_mask = fd_set_sample_mask;
 371         pctx->set_constant_buffer = fd_set_constant_buffer;
 372         pctx->set_framebuffer_state = fd_set_framebuffer_state;
 373         pctx->set_polygon_stipple = fd_set_polygon_stipple;
 374         pctx->set_scissor_states = fd_set_scissor_states;
 375         pctx->set_viewport_states = fd_set_viewport_states;
 376
 377         pctx->set_vertex_buffers = fd_set_vertex_buffers;
 378         pctx->set_index_buffer = fd_set_index_buffer;
 379
 380         pctx->bind_blend_state = fd_blend_state_bind;
 381         pctx->delete_blend_state = fd_blend_state_delete;
 382
 383         pctx->bind_rasterizer_state = fd_rasterizer_state_bind;
 384         pctx->delete_rasterizer_state = fd_rasterizer_state_delete;
 385
 386         pctx->bind_depth_stencil_alpha_state = fd_zsa_state_bind;
 387         pctx->delete_depth_stencil_alpha_state = fd_zsa_state_delete;
 388
 389         pctx->create_vertex_elements_state = fd_vertex_state_create;
 390         pctx->delete_vertex_elements_state = fd_vertex_state_delete;
 391         pctx->bind_vertex_elements_state = fd_vertex_state_bind;
 392
 393         pctx->create_stream_output_target = fd_create_stream_output_target;
 394         pctx->stream_output_target_destroy = fd_stream_output_target_destroy;
 395         pctx->set_stream_output_targets = fd_set_stream_output_targets;
 396 }