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_dual_blend.h"
  31 #include "util/u_string.h"
  32 #include "util/u_memory.h"
  33 #include "util/u_helpers.h"
  34
  35 #include "freedreno_state.h"
  36 #include "freedreno_context.h"
  37 #include "freedreno_resource.h"
  38 #include "freedreno_texture.h"
  39 #include "freedreno_gmem.h"
  40 #include "freedreno_util.h"
  41
  42 /* All the generic state handling.. In case of CSO's that are specific
  43  * to the GPU version, when the bind and the delete are common they can
  44  * go in here.
  45  */
  46
  47 static void
  48 fd_set_blend_color(struct pipe_context *pctx,
  49                 const struct pipe_blend_color *blend_color)
  50 {
  51         struct fd_context *ctx = fd_context(pctx);
  52         ctx->blend_color = *blend_color;
  53         ctx->dirty |= FD_DIRTY_BLEND_COLOR;
  54 }
  55
  56 static void
  57 fd_set_stencil_ref(struct pipe_context *pctx,
  58                 const struct pipe_stencil_ref *stencil_ref)
  59 {
  60         struct fd_context *ctx = fd_context(pctx);
  61         ctx->stencil_ref =* stencil_ref;
  62         ctx->dirty |= FD_DIRTY_STENCIL_REF;
  63 }
  64
  65 static void
  66 fd_set_clip_state(struct pipe_context *pctx,
  67                 const struct pipe_clip_state *clip)
  68 {
  69         struct fd_context *ctx = fd_context(pctx);
  70         ctx->ucp = *clip;
  71         ctx->dirty |= FD_DIRTY_UCP;
  72 }
  73
  74 static void
  75 fd_set_sample_mask(struct pipe_context *pctx, unsigned sample_mask)
  76 {
  77         struct fd_context *ctx = fd_context(pctx);
  78         ctx->sample_mask = (uint16_t)sample_mask;
  79         ctx->dirty |= FD_DIRTY_SAMPLE_MASK;
  80 }
  81
  82 /* notes from calim on #dri-devel:
  83  * index==0 will be non-UBO (ie. glUniformXYZ()) all packed together padded
  84  * out to vec4's
  85  * I should be able to consider that I own the user_ptr until the next
  86  * set_constant_buffer() call, at which point I don't really care about the
  87  * previous values.
  88  * index>0 will be UBO's.. well, I'll worry about that later
  89  */
  90 static void
  91 fd_set_constant_buffer(struct pipe_context *pctx, uint shader, uint index,
  92                 struct pipe_constant_buffer *cb)
  93 {
  94         struct fd_context *ctx = fd_context(pctx);
  95         struct fd_constbuf_stateobj *so = &ctx->constbuf[shader];
  96
  97         util_copy_constant_buffer(&so->cb[index], cb);
  98
  99         /* Note that the state tracker can unbind constant buffers by
 100          * passing NULL here.
 101          */
 102         if (unlikely(!cb)) {
 103                 so->enabled_mask &= ~(1 << index);
 104                 so->dirty_mask &= ~(1 << index);
 105                 return;
 106         }
 107
 108         so->enabled_mask |= 1 << index;
 109         so->dirty_mask |= 1 << index;
 110         ctx->dirty |= FD_DIRTY_CONSTBUF;
 111 }
 112
 113 static void
 114 fd_set_framebuffer_state(struct pipe_context *pctx,
 115                 const struct pipe_framebuffer_state *framebuffer)
 116 {
 117         struct fd_context *ctx = fd_context(pctx);
 118         struct pipe_framebuffer_state *cso = &ctx->framebuffer;
 119
 120         DBG("%d: cbufs[0]=%p, zsbuf=%p", ctx->needs_flush,
 121                         framebuffer->cbufs[0], framebuffer->zsbuf);
 122
 123         fd_context_render(pctx);
 124
 125         if ((cso->width != framebuffer->width) ||
 126                         (cso->height != framebuffer->height))
 127                 ctx->needs_rb_fbd = true;
 128
 129         util_copy_framebuffer_state(cso, framebuffer);
 130
 131         ctx->dirty |= FD_DIRTY_FRAMEBUFFER;
 132
 133         ctx->disabled_scissor.minx = 0;
 134         ctx->disabled_scissor.miny = 0;
 135         ctx->disabled_scissor.maxx = cso->width;
 136         ctx->disabled_scissor.maxy = cso->height;
 137
 138         ctx->dirty |= FD_DIRTY_SCISSOR;
 139 }
 140
 141 static void
 142 fd_set_polygon_stipple(struct pipe_context *pctx,
 143                 const struct pipe_poly_stipple *stipple)
 144 {
 145         struct fd_context *ctx = fd_context(pctx);
 146         ctx->stipple = *stipple;
 147         ctx->dirty |= FD_DIRTY_STIPPLE;
 148 }
 149
 150 static void
 151 fd_set_scissor_states(struct pipe_context *pctx,
 152                 unsigned start_slot,
 153                 unsigned num_scissors,
 154                 const struct pipe_scissor_state *scissor)
 155 {
 156         struct fd_context *ctx = fd_context(pctx);
 157
 158         ctx->scissor = *scissor;
 159         ctx->dirty |= FD_DIRTY_SCISSOR;
 160 }
 161
 162 static void
 163 fd_set_viewport_states(struct pipe_context *pctx,
 164                 unsigned start_slot,
 165                 unsigned num_viewports,
 166                 const struct pipe_viewport_state *viewport)
 167 {
 168         struct fd_context *ctx = fd_context(pctx);
 169         ctx->viewport = *viewport;
 170         ctx->dirty |= FD_DIRTY_VIEWPORT;
 171 }
 172
 173 static void
 174 fd_set_vertex_buffers(struct pipe_context *pctx,
 175                 unsigned start_slot, unsigned count,
 176                 const struct pipe_vertex_buffer *vb)
 177 {
 178         struct fd_context *ctx = fd_context(pctx);
 179         struct fd_vertexbuf_stateobj *so = &ctx->vtx.vertexbuf;
 180         int i;
 181
 182         /* on a2xx, pitch is encoded in the vtx fetch instruction, so
 183          * we need to mark VTXSTATE as dirty as well to trigger patching
 184          * and re-emitting the vtx shader:
 185          */
 186         for (i = 0; i < count; i++) {
 187                 bool new_enabled = vb && (vb[i].buffer || vb[i].user_buffer);
 188                 bool old_enabled = so->vb[i].buffer || so->vb[i].user_buffer;
 189                 uint32_t new_stride = vb ? vb[i].stride : 0;
 190                 uint32_t old_stride = so->vb[i].stride;
 191                 if ((new_enabled != old_enabled) || (new_stride != old_stride)) {
 192                         ctx->dirty |= FD_DIRTY_VTXSTATE;
 193                         break;
 194                 }
 195         }
 196
 197         util_set_vertex_buffers_mask(so->vb, &so->enabled_mask, vb, start_slot, count);
 198         so->count = util_last_bit(so->enabled_mask);
 199
 200         ctx->dirty |= FD_DIRTY_VTXBUF;
 201 }
 202
 203 static void
 204 fd_set_index_buffer(struct pipe_context *pctx,
 205                 const struct pipe_index_buffer *ib)
 206 {
 207         struct fd_context *ctx = fd_context(pctx);
 208
 209         if (ib) {
 210                 pipe_resource_reference(&ctx->indexbuf.buffer, ib->buffer);
 211                 ctx->indexbuf.index_size = ib->index_size;
 212                 ctx->indexbuf.offset = ib->offset;
 213                 ctx->indexbuf.user_buffer = ib->user_buffer;
 214         } else {
 215                 pipe_resource_reference(&ctx->indexbuf.buffer, NULL);
 216         }
 217
 218         ctx->dirty |= FD_DIRTY_INDEXBUF;
 219 }
 220
 221 static void
 222 fd_blend_state_bind(struct pipe_context *pctx, void *hwcso)
 223 {
 224         struct fd_context *ctx = fd_context(pctx);
 225         struct pipe_blend_state *cso = hwcso;
 226         bool old_is_dual = ctx->blend ?
 227                 ctx->blend->rt[0].blend_enable && util_blend_state_is_dual(ctx->blend, 0) :
 228                 false;
 229         bool new_is_dual = cso ?
 230                 cso->rt[0].blend_enable && util_blend_state_is_dual(cso, 0) :
 231                 false;
 232         ctx->blend = hwcso;
 233         ctx->dirty |= FD_DIRTY_BLEND;
 234         if (old_is_dual != new_is_dual)
 235                 ctx->dirty |= FD_DIRTY_BLEND_DUAL;
 236 }
 237
 238 static void
 239 fd_blend_state_delete(struct pipe_context *pctx, void *hwcso)
 240 {
 241         FREE(hwcso);
 242 }
 243
 244 static void
 245 fd_rasterizer_state_bind(struct pipe_context *pctx, void *hwcso)
 246 {
 247         struct fd_context *ctx = fd_context(pctx);
 248         struct pipe_scissor_state *old_scissor = fd_context_get_scissor(ctx);
 249
 250         ctx->rasterizer = hwcso;
 251         ctx->dirty |= FD_DIRTY_RASTERIZER;
 252
 253         /* if scissor enable bit changed we need to mark scissor
 254          * state as dirty as well:
 255          * NOTE: we can do a shallow compare, since we only care
 256          * if it changed to/from &ctx->disable_scissor
 257          */
 258         if (old_scissor != fd_context_get_scissor(ctx))
 259                 ctx->dirty |= FD_DIRTY_SCISSOR;
 260 }
 261
 262 static void
 263 fd_rasterizer_state_delete(struct pipe_context *pctx, void *hwcso)
 264 {
 265         FREE(hwcso);
 266 }
 267
 268 static void
 269 fd_zsa_state_bind(struct pipe_context *pctx, void *hwcso)
 270 {
 271         struct fd_context *ctx = fd_context(pctx);
 272         ctx->zsa = hwcso;
 273         ctx->dirty |= FD_DIRTY_ZSA;
 274 }
 275
 276 static void
 277 fd_zsa_state_delete(struct pipe_context *pctx, void *hwcso)
 278 {
 279         FREE(hwcso);
 280 }
 281
 282 static void *
 283 fd_vertex_state_create(struct pipe_context *pctx, unsigned num_elements,
 284                 const struct pipe_vertex_element *elements)
 285 {
 286         struct fd_vertex_stateobj *so = CALLOC_STRUCT(fd_vertex_stateobj);
 287
 288         if (!so)
 289                 return NULL;
 290
 291         memcpy(so->pipe, elements, sizeof(*elements) * num_elements);
 292         so->num_elements = num_elements;
 293
 294         return so;
 295 }
 296
 297 static void
 298 fd_vertex_state_delete(struct pipe_context *pctx, void *hwcso)
 299 {
 300         FREE(hwcso);
 301 }
 302
 303 static void
 304 fd_vertex_state_bind(struct pipe_context *pctx, void *hwcso)
 305 {
 306         struct fd_context *ctx = fd_context(pctx);
 307         ctx->vtx.vtx = hwcso;
 308         ctx->dirty |= FD_DIRTY_VTXSTATE;
 309 }
 310
 311 static struct pipe_stream_output_target *
 312 fd_create_stream_output_target(struct pipe_context *pctx,
 313                 struct pipe_resource *prsc, unsigned buffer_offset,
 314                 unsigned buffer_size)
 315 {
 316         struct pipe_stream_output_target *target;
 317
 318         target = CALLOC_STRUCT(pipe_stream_output_target);
 319         if (!target)
 320                 return NULL;
 321
 322         pipe_reference_init(&target->reference, 1);
 323         pipe_resource_reference(&target->buffer, prsc);
 324
 325         target->context = pctx;
 326         target->buffer_offset = buffer_offset;
 327         target->buffer_size = buffer_size;
 328
 329         return target;
 330 }
 331
 332 static void
 333 fd_stream_output_target_destroy(struct pipe_context *pctx,
 334                 struct pipe_stream_output_target *target)
 335 {
 336         pipe_resource_reference(&target->buffer, NULL);
 337         FREE(target);
 338 }
 339
 340 static void
 341 fd_set_stream_output_targets(struct pipe_context *pctx,
 342                 unsigned num_targets, struct pipe_stream_output_target **targets,
 343                 const unsigned *offsets)
 344 {
 345         struct fd_context *ctx = fd_context(pctx);
 346         struct fd_streamout_stateobj *so = &ctx->streamout;
 347         unsigned i;
 348
 349         debug_assert(num_targets <= ARRAY_SIZE(so->targets));
 350
 351         for (i = 0; i < num_targets; i++) {
 352                 boolean changed = targets[i] != so->targets[i];
 353                 boolean append = (offsets[i] == (unsigned)-1);
 354
 355                 if (!changed && append)
 356                         continue;
 357
 358                 if (!append)
 359                         so->offsets[i] = offsets[i];
 360
 361                 pipe_so_target_reference(&so->targets[i], targets[i]);
 362         }
 363
 364         for (; i < so->num_targets; i++) {
 365                 pipe_so_target_reference(&so->targets[i], NULL);
 366         }
 367
 368         so->num_targets = num_targets;
 369
 370         ctx->dirty |= FD_DIRTY_STREAMOUT;
 371 }
 372
 373 void
 374 fd_state_init(struct pipe_context *pctx)
 375 {
 376         pctx->set_blend_color = fd_set_blend_color;
 377         pctx->set_stencil_ref = fd_set_stencil_ref;
 378         pctx->set_clip_state = fd_set_clip_state;
 379         pctx->set_sample_mask = fd_set_sample_mask;
 380         pctx->set_constant_buffer = fd_set_constant_buffer;
 381         pctx->set_framebuffer_state = fd_set_framebuffer_state;
 382         pctx->set_polygon_stipple = fd_set_polygon_stipple;
 383         pctx->set_scissor_states = fd_set_scissor_states;
 384         pctx->set_viewport_states = fd_set_viewport_states;
 385
 386         pctx->set_vertex_buffers = fd_set_vertex_buffers;
 387         pctx->set_index_buffer = fd_set_index_buffer;
 388
 389         pctx->bind_blend_state = fd_blend_state_bind;
 390         pctx->delete_blend_state = fd_blend_state_delete;
 391
 392         pctx->bind_rasterizer_state = fd_rasterizer_state_bind;
 393         pctx->delete_rasterizer_state = fd_rasterizer_state_delete;
 394
 395         pctx->bind_depth_stencil_alpha_state = fd_zsa_state_bind;
 396         pctx->delete_depth_stencil_alpha_state = fd_zsa_state_delete;
 397
 398         pctx->create_vertex_elements_state = fd_vertex_state_create;
 399         pctx->delete_vertex_elements_state = fd_vertex_state_delete;
 400         pctx->bind_vertex_elements_state = fd_vertex_state_bind;
 401
 402         pctx->create_stream_output_target = fd_create_stream_output_target;
 403         pctx->stream_output_target_destroy = fd_stream_output_target_destroy;
 404         pctx->set_stream_output_targets = fd_set_stream_output_targets;
 405 }