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         /* Note that the state tracker can unbind constant buffers by
  98          * passing NULL here.
  99          */
 100         if (unlikely(!cb)) {
 101                 so->enabled_mask &= ~(1 << index);
 102                 so->dirty_mask &= ~(1 << index);
 103                 pipe_resource_reference(&so->cb[index].buffer, NULL);
 104                 return;
 105         }
 106
 107         pipe_resource_reference(&so->cb[index].buffer, cb->buffer);
 108         so->cb[index].buffer_offset = cb->buffer_offset;
 109         so->cb[index].buffer_size   = cb->buffer_size;
 110         so->cb[index].user_buffer   = cb->user_buffer;
 111
 112         so->enabled_mask |= 1 << index;
 113         so->dirty_mask |= 1 << index;
 114         ctx->dirty |= FD_DIRTY_CONSTBUF;
 115 }
 116
 117 static void
 118 fd_set_framebuffer_state(struct pipe_context *pctx,
 119                 const struct pipe_framebuffer_state *framebuffer)
 120 {
 121         struct fd_context *ctx = fd_context(pctx);
 122         struct pipe_framebuffer_state *cso = &ctx->framebuffer;
 123
 124         DBG("%d: cbufs[0]=%p, zsbuf=%p", ctx->needs_flush,
 125                         framebuffer->cbufs[0], framebuffer->zsbuf);
 126
 127         fd_context_render(pctx);
 128
 129         if ((cso->width != framebuffer->width) ||
 130                         (cso->height != framebuffer->height))
 131                 ctx->needs_rb_fbd = true;
 132
 133         util_copy_framebuffer_state(cso, framebuffer);
 134
 135         ctx->dirty |= FD_DIRTY_FRAMEBUFFER;
 136
 137         ctx->disabled_scissor.minx = 0;
 138         ctx->disabled_scissor.miny = 0;
 139         ctx->disabled_scissor.maxx = cso->width;
 140         ctx->disabled_scissor.maxy = cso->height;
 141
 142         ctx->dirty |= FD_DIRTY_SCISSOR;
 143 }
 144
 145 static void
 146 fd_set_polygon_stipple(struct pipe_context *pctx,
 147                 const struct pipe_poly_stipple *stipple)
 148 {
 149         struct fd_context *ctx = fd_context(pctx);
 150         ctx->stipple = *stipple;
 151         ctx->dirty |= FD_DIRTY_STIPPLE;
 152 }
 153
 154 static void
 155 fd_set_scissor_states(struct pipe_context *pctx,
 156                 unsigned start_slot,
 157                 unsigned num_scissors,
 158                 const struct pipe_scissor_state *scissor)
 159 {
 160         struct fd_context *ctx = fd_context(pctx);
 161
 162         ctx->scissor = *scissor;
 163         ctx->dirty |= FD_DIRTY_SCISSOR;
 164 }
 165
 166 static void
 167 fd_set_viewport_states(struct pipe_context *pctx,
 168                 unsigned start_slot,
 169                 unsigned num_viewports,
 170                 const struct pipe_viewport_state *viewport)
 171 {
 172         struct fd_context *ctx = fd_context(pctx);
 173         ctx->viewport = *viewport;
 174         ctx->dirty |= FD_DIRTY_VIEWPORT;
 175 }
 176
 177 static void
 178 fd_set_vertex_buffers(struct pipe_context *pctx,
 179                 unsigned start_slot, unsigned count,
 180                 const struct pipe_vertex_buffer *vb)
 181 {
 182         struct fd_context *ctx = fd_context(pctx);
 183         struct fd_vertexbuf_stateobj *so = &ctx->vtx.vertexbuf;
 184         int i;
 185
 186         /* on a2xx, pitch is encoded in the vtx fetch instruction, so
 187          * we need to mark VTXSTATE as dirty as well to trigger patching
 188          * and re-emitting the vtx shader:
 189          */
 190         for (i = 0; i < count; i++) {
 191                 bool new_enabled = vb && (vb[i].buffer || vb[i].user_buffer);
 192                 bool old_enabled = so->vb[i].buffer || so->vb[i].user_buffer;
 193                 uint32_t new_stride = vb ? vb[i].stride : 0;
 194                 uint32_t old_stride = so->vb[i].stride;
 195                 if ((new_enabled != old_enabled) || (new_stride != old_stride)) {
 196                         ctx->dirty |= FD_DIRTY_VTXSTATE;
 197                         break;
 198                 }
 199         }
 200
 201         util_set_vertex_buffers_mask(so->vb, &so->enabled_mask, vb, start_slot, count);
 202         so->count = util_last_bit(so->enabled_mask);
 203
 204         ctx->dirty |= FD_DIRTY_VTXBUF;
 205 }
 206
 207 static void
 208 fd_set_index_buffer(struct pipe_context *pctx,
 209                 const struct pipe_index_buffer *ib)
 210 {
 211         struct fd_context *ctx = fd_context(pctx);
 212
 213         if (ib) {
 214                 pipe_resource_reference(&ctx->indexbuf.buffer, ib->buffer);
 215                 ctx->indexbuf.index_size = ib->index_size;
 216                 ctx->indexbuf.offset = ib->offset;
 217                 ctx->indexbuf.user_buffer = ib->user_buffer;
 218         } else {
 219                 pipe_resource_reference(&ctx->indexbuf.buffer, NULL);
 220         }
 221
 222         ctx->dirty |= FD_DIRTY_INDEXBUF;
 223 }
 224
 225 static void
 226 fd_blend_state_bind(struct pipe_context *pctx, void *hwcso)
 227 {
 228         struct fd_context *ctx = fd_context(pctx);
 229         struct pipe_blend_state *cso = hwcso;
 230         bool old_is_dual = ctx->blend ?
 231                 ctx->blend->rt[0].blend_enable && util_blend_state_is_dual(ctx->blend, 0) :
 232                 false;
 233         bool new_is_dual = cso ?
 234                 cso->rt[0].blend_enable && util_blend_state_is_dual(cso, 0) :
 235                 false;
 236         ctx->blend = hwcso;
 237         ctx->dirty |= FD_DIRTY_BLEND;
 238         if (old_is_dual != new_is_dual)
 239                 ctx->dirty |= FD_DIRTY_BLEND_DUAL;
 240 }
 241
 242 static void
 243 fd_blend_state_delete(struct pipe_context *pctx, void *hwcso)
 244 {
 245         FREE(hwcso);
 246 }
 247
 248 static void
 249 fd_rasterizer_state_bind(struct pipe_context *pctx, void *hwcso)
 250 {
 251         struct fd_context *ctx = fd_context(pctx);
 252         struct pipe_scissor_state *old_scissor = fd_context_get_scissor(ctx);
 253
 254         ctx->rasterizer = hwcso;
 255         ctx->dirty |= FD_DIRTY_RASTERIZER;
 256
 257         /* if scissor enable bit changed we need to mark scissor
 258          * state as dirty as well:
 259          * NOTE: we can do a shallow compare, since we only care
 260          * if it changed to/from &ctx->disable_scissor
 261          */
 262         if (old_scissor != fd_context_get_scissor(ctx))
 263                 ctx->dirty |= FD_DIRTY_SCISSOR;
 264 }
 265
 266 static void
 267 fd_rasterizer_state_delete(struct pipe_context *pctx, void *hwcso)
 268 {
 269         FREE(hwcso);
 270 }
 271
 272 static void
 273 fd_zsa_state_bind(struct pipe_context *pctx, void *hwcso)
 274 {
 275         struct fd_context *ctx = fd_context(pctx);
 276         ctx->zsa = hwcso;
 277         ctx->dirty |= FD_DIRTY_ZSA;
 278 }
 279
 280 static void
 281 fd_zsa_state_delete(struct pipe_context *pctx, void *hwcso)
 282 {
 283         FREE(hwcso);
 284 }
 285
 286 static void *
 287 fd_vertex_state_create(struct pipe_context *pctx, unsigned num_elements,
 288                 const struct pipe_vertex_element *elements)
 289 {
 290         struct fd_vertex_stateobj *so = CALLOC_STRUCT(fd_vertex_stateobj);
 291
 292         if (!so)
 293                 return NULL;
 294
 295         memcpy(so->pipe, elements, sizeof(*elements) * num_elements);
 296         so->num_elements = num_elements;
 297
 298         return so;
 299 }
 300
 301 static void
 302 fd_vertex_state_delete(struct pipe_context *pctx, void *hwcso)
 303 {
 304         FREE(hwcso);
 305 }
 306
 307 static void
 308 fd_vertex_state_bind(struct pipe_context *pctx, void *hwcso)
 309 {
 310         struct fd_context *ctx = fd_context(pctx);
 311         ctx->vtx.vtx = hwcso;
 312         ctx->dirty |= FD_DIRTY_VTXSTATE;
 313 }
 314
 315 static struct pipe_stream_output_target *
 316 fd_create_stream_output_target(struct pipe_context *pctx,
 317                 struct pipe_resource *prsc, unsigned buffer_offset,
 318                 unsigned buffer_size)
 319 {
 320         struct pipe_stream_output_target *target;
 321
 322         target = CALLOC_STRUCT(pipe_stream_output_target);
 323         if (!target)
 324                 return NULL;
 325
 326         pipe_reference_init(&target->reference, 1);
 327         pipe_resource_reference(&target->buffer, prsc);
 328
 329         target->context = pctx;
 330         target->buffer_offset = buffer_offset;
 331         target->buffer_size = buffer_size;
 332
 333         return target;
 334 }
 335
 336 static void
 337 fd_stream_output_target_destroy(struct pipe_context *pctx,
 338                 struct pipe_stream_output_target *target)
 339 {
 340         pipe_resource_reference(&target->buffer, NULL);
 341         FREE(target);
 342 }
 343
 344 static void
 345 fd_set_stream_output_targets(struct pipe_context *pctx,
 346                 unsigned num_targets, struct pipe_stream_output_target **targets,
 347                 const unsigned *offsets)
 348 {
 349         struct fd_context *ctx = fd_context(pctx);
 350         struct fd_streamout_stateobj *so = &ctx->streamout;
 351         unsigned i;
 352
 353         debug_assert(num_targets <= ARRAY_SIZE(so->targets));
 354
 355         for (i = 0; i < num_targets; i++) {
 356                 boolean changed = targets[i] != so->targets[i];
 357                 boolean append = (offsets[i] == (unsigned)-1);
 358
 359                 if (!changed && append)
 360                         continue;
 361
 362                 if (!append)
 363                         so->offsets[i] = offsets[i];
 364
 365                 pipe_so_target_reference(&so->targets[i], targets[i]);
 366         }
 367
 368         for (; i < so->num_targets; i++) {
 369                 pipe_so_target_reference(&so->targets[i], NULL);
 370         }
 371
 372         so->num_targets = num_targets;
 373
 374         ctx->dirty |= FD_DIRTY_STREAMOUT;
 375 }
 376
 377 void
 378 fd_state_init(struct pipe_context *pctx)
 379 {
 380         pctx->set_blend_color = fd_set_blend_color;
 381         pctx->set_stencil_ref = fd_set_stencil_ref;
 382         pctx->set_clip_state = fd_set_clip_state;
 383         pctx->set_sample_mask = fd_set_sample_mask;
 384         pctx->set_constant_buffer = fd_set_constant_buffer;
 385         pctx->set_framebuffer_state = fd_set_framebuffer_state;
 386         pctx->set_polygon_stipple = fd_set_polygon_stipple;
 387         pctx->set_scissor_states = fd_set_scissor_states;
 388         pctx->set_viewport_states = fd_set_viewport_states;
 389
 390         pctx->set_vertex_buffers = fd_set_vertex_buffers;
 391         pctx->set_index_buffer = fd_set_index_buffer;
 392
 393         pctx->bind_blend_state = fd_blend_state_bind;
 394         pctx->delete_blend_state = fd_blend_state_delete;
 395
 396         pctx->bind_rasterizer_state = fd_rasterizer_state_bind;
 397         pctx->delete_rasterizer_state = fd_rasterizer_state_delete;
 398
 399         pctx->bind_depth_stencil_alpha_state = fd_zsa_state_bind;
 400         pctx->delete_depth_stencil_alpha_state = fd_zsa_state_delete;
 401
 402         pctx->create_vertex_elements_state = fd_vertex_state_create;
 403         pctx->delete_vertex_elements_state = fd_vertex_state_delete;
 404         pctx->bind_vertex_elements_state = fd_vertex_state_bind;
 405
 406         pctx->create_stream_output_target = fd_create_stream_output_target;
 407         pctx->stream_output_target_destroy = fd_stream_output_target_destroy;
 408         pctx->set_stream_output_targets = fd_set_stream_output_targets;
 409 }