src/gallium/drivers/freedreno/freedreno_draw.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_prim.h"
  33 #include "util/u_format.h"
  34 #include "util/u_helpers.h"
  35
  36 #include "freedreno_draw.h"
  37 #include "freedreno_context.h"
  38 #include "freedreno_state.h"
  39 #include "freedreno_resource.h"
  40 #include "freedreno_query_hw.h"
  41 #include "freedreno_util.h"
  42
  43 static void
  44 resource_read(struct fd_batch *batch, struct pipe_resource *prsc)
  45 {
  46         if (!prsc)
  47                 return;
  48         fd_batch_resource_used(batch, fd_resource(prsc), false);
  49 }
  50
  51 static void
  52 resource_written(struct fd_batch *batch, struct pipe_resource *prsc)
  53 {
  54         if (!prsc)
  55                 return;
  56         fd_batch_resource_used(batch, fd_resource(prsc), true);
  57 }
  58
  59 static void
  60 fd_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
  61 {
  62         struct fd_context *ctx = fd_context(pctx);
  63         struct fd_batch *batch = ctx->batch;
  64         struct pipe_framebuffer_state *pfb = &batch->framebuffer;
  65         struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);
  66         unsigned i, prims, buffers = 0;
  67
  68         if (!info->count_from_stream_output && !info->indirect &&
  69             !info->primitive_restart &&
  70             !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
  71                 return;
  72
  73         /* if we supported transform feedback, we'd have to disable this: */
  74         if (((scissor->maxx - scissor->minx) *
  75                         (scissor->maxy - scissor->miny)) == 0) {
  76                 return;
  77         }
  78
  79         /* TODO: push down the region versions into the tiles */
  80         if (!fd_render_condition_check(pctx))
  81                 return;
  82
  83         /* emulate unsupported primitives: */
  84         if (!fd_supported_prim(ctx, info->mode)) {
  85                 if (ctx->streamout.num_targets > 0)
  86                         debug_error("stream-out with emulated prims");
  87                 util_primconvert_save_index_buffer(ctx->primconvert, &ctx->indexbuf);
  88                 util_primconvert_save_rasterizer_state(ctx->primconvert, ctx->rasterizer);
  89                 util_primconvert_draw_vbo(ctx->primconvert, info);
  90                 return;
  91         }
  92
  93         /* Upload a user index buffer. */
  94         struct pipe_index_buffer ibuffer_saved = {};
  95         if (info->indexed && ctx->indexbuf.user_buffer &&
  96             !util_save_and_upload_index_buffer(pctx, info, &ctx->indexbuf,
  97                                                &ibuffer_saved)) {
  98                 return;
  99         }
 100
 101         if (ctx->in_blit) {
 102                 fd_batch_reset(batch);
 103                 fd_context_all_dirty(ctx);
 104         }
 105
 106         batch->blit = ctx->in_blit;
 107         batch->back_blit = ctx->in_shadow;
 108
 109         /* NOTE: needs to be before resource_written(batch->query_buf), otherwise
 110          * query_buf may not be created yet.
 111          */
 112         fd_hw_query_set_stage(batch, batch->draw, FD_STAGE_DRAW);
 113
 114         /*
 115          * Figure out the buffers/features we need:
 116          */
 117
 118         mtx_lock(&ctx->screen->lock);
 119
 120         if (fd_depth_enabled(ctx)) {
 121                 buffers |= FD_BUFFER_DEPTH;
 122                 resource_written(batch, pfb->zsbuf->texture);
 123                 batch->gmem_reason |= FD_GMEM_DEPTH_ENABLED;
 124         }
 125
 126         if (fd_stencil_enabled(ctx)) {
 127                 buffers |= FD_BUFFER_STENCIL;
 128                 resource_written(batch, pfb->zsbuf->texture);
 129                 batch->gmem_reason |= FD_GMEM_STENCIL_ENABLED;
 130         }
 131
 132         if (fd_logicop_enabled(ctx))
 133                 batch->gmem_reason |= FD_GMEM_LOGICOP_ENABLED;
 134
 135         for (i = 0; i < pfb->nr_cbufs; i++) {
 136                 struct pipe_resource *surf;
 137
 138                 if (!pfb->cbufs[i])
 139                         continue;
 140
 141                 surf = pfb->cbufs[i]->texture;
 142
 143                 resource_written(batch, surf);
 144                 buffers |= PIPE_CLEAR_COLOR0 << i;
 145
 146                 if (surf->nr_samples > 1)
 147                         batch->gmem_reason |= FD_GMEM_MSAA_ENABLED;
 148
 149                 if (fd_blend_enabled(ctx, i))
 150                         batch->gmem_reason |= FD_GMEM_BLEND_ENABLED;
 151         }
 152
 153         foreach_bit(i, ctx->constbuf[PIPE_SHADER_VERTEX].enabled_mask)
 154                 resource_read(batch, ctx->constbuf[PIPE_SHADER_VERTEX].cb[i].buffer);
 155         foreach_bit(i, ctx->constbuf[PIPE_SHADER_FRAGMENT].enabled_mask)
 156                 resource_read(batch, ctx->constbuf[PIPE_SHADER_FRAGMENT].cb[i].buffer);
 157
 158         /* Mark VBOs as being read */
 159         foreach_bit(i, ctx->vtx.vertexbuf.enabled_mask) {
 160                 assert(!ctx->vtx.vertexbuf.vb[i].user_buffer);
 161                 resource_read(batch, ctx->vtx.vertexbuf.vb[i].buffer);
 162         }
 163
 164         /* Mark index buffer as being read */
 165         resource_read(batch, ctx->indexbuf.buffer);
 166
 167         /* Mark textures as being read */
 168         foreach_bit(i, ctx->tex[PIPE_SHADER_VERTEX].valid_textures)
 169                 resource_read(batch, ctx->tex[PIPE_SHADER_VERTEX].textures[i]->texture);
 170         foreach_bit(i, ctx->tex[PIPE_SHADER_FRAGMENT].valid_textures)
 171                 resource_read(batch, ctx->tex[PIPE_SHADER_FRAGMENT].textures[i]->texture);
 172
 173         /* Mark streamout buffers as being written.. */
 174         for (i = 0; i < ctx->streamout.num_targets; i++)
 175                 if (ctx->streamout.targets[i])
 176                         resource_written(batch, ctx->streamout.targets[i]->buffer);
 177
 178         resource_written(batch, batch->query_buf);
 179
 180         mtx_unlock(&ctx->screen->lock);
 181
 182         batch->num_draws++;
 183
 184         prims = u_reduced_prims_for_vertices(info->mode, info->count);
 185
 186         ctx->stats.draw_calls++;
 187
 188         /* TODO prims_emitted should be clipped when the stream-out buffer is
 189          * not large enough.  See max_tf_vtx().. probably need to move that
 190          * into common code.  Although a bit more annoying since a2xx doesn't
 191          * use ir3 so no common way to get at the pipe_stream_output_info
 192          * which is needed for this calculation.
 193          */
 194         if (ctx->streamout.num_targets > 0)
 195                 ctx->stats.prims_emitted += prims;
 196         ctx->stats.prims_generated += prims;
 197
 198         /* any buffers that haven't been cleared yet, we need to restore: */
 199         batch->restore |= buffers & (FD_BUFFER_ALL & ~batch->cleared);
 200         /* and any buffers used, need to be resolved: */
 201         batch->resolve |= buffers;
 202
 203         DBG("%p: %x %ux%u num_draws=%u (%s/%s)", batch, buffers,
 204                 pfb->width, pfb->height, batch->num_draws,
 205                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 206                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 207
 208         if (ctx->draw_vbo(ctx, info))
 209                 batch->needs_flush = true;
 210
 211         for (i = 0; i < ctx->streamout.num_targets; i++)
 212                 ctx->streamout.offsets[i] += info->count;
 213
 214         if (fd_mesa_debug & FD_DBG_DDRAW)
 215                 fd_context_all_dirty(ctx);
 216
 217         fd_batch_check_size(batch);
 218
 219         if (info->indexed && ibuffer_saved.user_buffer)
 220            pctx->set_index_buffer(pctx, &ibuffer_saved);
 221 }
 222
 223 /* Generic clear implementation (partially) using u_blitter: */
 224 static void
 225 fd_blitter_clear(struct pipe_context *pctx, unsigned buffers,
 226                 const union pipe_color_union *color, double depth, unsigned stencil)
 227 {
 228         struct fd_context *ctx = fd_context(pctx);
 229         struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
 230         struct blitter_context *blitter = ctx->blitter;
 231
 232         fd_blitter_pipe_begin(ctx, false, true, FD_STAGE_CLEAR);
 233
 234         util_blitter_common_clear_setup(blitter, pfb->width, pfb->height,
 235                         buffers, NULL, NULL);
 236
 237         struct pipe_stencil_ref sr = {
 238                 .ref_value = { stencil & 0xff }
 239         };
 240         pctx->set_stencil_ref(pctx, &sr);
 241
 242         struct pipe_constant_buffer cb = {
 243                 .buffer_size = 16,
 244                 .user_buffer = &color->ui,
 245         };
 246         pctx->set_constant_buffer(pctx, PIPE_SHADER_FRAGMENT, 0, &cb);
 247
 248         if (!ctx->clear_rs_state) {
 249                 const struct pipe_rasterizer_state tmpl = {
 250                         .cull_face = PIPE_FACE_NONE,
 251                         .half_pixel_center = 1,
 252                         .bottom_edge_rule = 1,
 253                         .flatshade = 1,
 254                         .depth_clip = 1,
 255                 };
 256                 ctx->clear_rs_state = pctx->create_rasterizer_state(pctx, &tmpl);
 257         }
 258         pctx->bind_rasterizer_state(pctx, ctx->clear_rs_state);
 259
 260         struct pipe_viewport_state vp = {
 261                 .scale     = { 0.5f * pfb->width, -0.5f * pfb->height, depth },
 262                 .translate = { 0.5f * pfb->width,  0.5f * pfb->height, 0.0f },
 263         };
 264         pctx->set_viewport_states(pctx, 0, 1, &vp);
 265
 266         pctx->bind_vertex_elements_state(pctx, ctx->solid_vbuf_state.vtx);
 267         pctx->set_vertex_buffers(pctx, blitter->vb_slot, 1,
 268                         &ctx->solid_vbuf_state.vertexbuf.vb[0]);
 269         pctx->set_stream_output_targets(pctx, 0, NULL, NULL);
 270         pctx->bind_vs_state(pctx, ctx->solid_prog.vp);
 271         pctx->bind_fs_state(pctx, ctx->solid_prog.fp);
 272
 273         struct pipe_draw_info info = {
 274                 .mode = PIPE_PRIM_MAX,    /* maps to DI_PT_RECTLIST */
 275                 .count = 2,
 276                 .max_index = 1,
 277                 .instance_count = 1,
 278         };
 279         ctx->draw_vbo(ctx, &info);
 280
 281         util_blitter_restore_constant_buffer_state(blitter);
 282         util_blitter_restore_vertex_states(blitter);
 283         util_blitter_restore_fragment_states(blitter);
 284         util_blitter_restore_textures(blitter);
 285         util_blitter_restore_fb_state(blitter);
 286         util_blitter_restore_render_cond(blitter);
 287         util_blitter_unset_running_flag(blitter);
 288
 289         fd_blitter_pipe_end(ctx);
 290 }
 291
 292 /* TODO figure out how to make better use of existing state mechanism
 293  * for clear (and possibly gmem->mem / mem->gmem) so we can (a) keep
 294  * track of what state really actually changes, and (b) reduce the code
 295  * in the a2xx/a3xx parts.
 296  */
 297
 298 static void
 299 fd_clear(struct pipe_context *pctx, unsigned buffers,
 300                 const union pipe_color_union *color, double depth, unsigned stencil)
 301 {
 302         struct fd_context *ctx = fd_context(pctx);
 303         struct fd_batch *batch = ctx->batch;
 304         struct pipe_framebuffer_state *pfb = &batch->framebuffer;
 305         struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);
 306         unsigned cleared_buffers;
 307         int i;
 308
 309         /* TODO: push down the region versions into the tiles */
 310         if (!fd_render_condition_check(pctx))
 311                 return;
 312
 313         if (ctx->in_blit) {
 314                 fd_batch_reset(batch);
 315                 fd_context_all_dirty(ctx);
 316         }
 317
 318         /* for bookkeeping about which buffers have been cleared (and thus
 319          * can fully or partially skip mem2gmem) we need to ignore buffers
 320          * that have already had a draw, in case apps do silly things like
 321          * clear after draw (ie. if you only clear the color buffer, but
 322          * something like alpha-test causes side effects from the draw in
 323          * the depth buffer, etc)
 324          */
 325         cleared_buffers = buffers & (FD_BUFFER_ALL & ~batch->restore);
 326
 327         /* do we have full-screen scissor? */
 328         if (!memcmp(scissor, &ctx->disabled_scissor, sizeof(*scissor))) {
 329                 batch->cleared |= cleared_buffers;
 330         } else {
 331                 batch->partial_cleared |= cleared_buffers;
 332                 if (cleared_buffers & PIPE_CLEAR_COLOR)
 333                         batch->cleared_scissor.color = *scissor;
 334                 if (cleared_buffers & PIPE_CLEAR_DEPTH)
 335                         batch->cleared_scissor.depth = *scissor;
 336                 if (cleared_buffers & PIPE_CLEAR_STENCIL)
 337                         batch->cleared_scissor.stencil = *scissor;
 338         }
 339         batch->resolve |= buffers;
 340         batch->needs_flush = true;
 341
 342         mtx_lock(&ctx->screen->lock);
 343
 344         if (buffers & PIPE_CLEAR_COLOR)
 345                 for (i = 0; i < pfb->nr_cbufs; i++)
 346                         if (buffers & (PIPE_CLEAR_COLOR0 << i))
 347                                 resource_written(batch, pfb->cbufs[i]->texture);
 348
 349         if (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL)) {
 350                 resource_written(batch, pfb->zsbuf->texture);
 351                 batch->gmem_reason |= FD_GMEM_CLEARS_DEPTH_STENCIL;
 352         }
 353
 354         resource_written(batch, batch->query_buf);
 355
 356         mtx_unlock(&ctx->screen->lock);
 357
 358         DBG("%p: %x %ux%u depth=%f, stencil=%u (%s/%s)", batch, buffers,
 359                 pfb->width, pfb->height, depth, stencil,
 360                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 361                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 362
 363         /* if per-gen backend doesn't implement ctx->clear() generic
 364          * blitter clear:
 365          */
 366         if (!ctx->clear) {
 367                 fd_blitter_clear(pctx, buffers, color, depth, stencil);
 368                 return;
 369         }
 370
 371         fd_hw_query_set_stage(batch, batch->draw, FD_STAGE_CLEAR);
 372
 373         ctx->clear(ctx, buffers, color, depth, stencil);
 374
 375         if (fd_mesa_debug & FD_DBG_DCLEAR)
 376                 fd_context_all_dirty(ctx);
 377 }
 378
 379 static void
 380 fd_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps,
 381                 const union pipe_color_union *color,
 382                 unsigned x, unsigned y, unsigned w, unsigned h,
 383                 bool render_condition_enabled)
 384 {
 385         DBG("TODO: x=%u, y=%u, w=%u, h=%u", x, y, w, h);
 386 }
 387
 388 static void
 389 fd_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps,
 390                 unsigned buffers, double depth, unsigned stencil,
 391                 unsigned x, unsigned y, unsigned w, unsigned h,
 392                 bool render_condition_enabled)
 393 {
 394         DBG("TODO: buffers=%u, depth=%f, stencil=%u, x=%u, y=%u, w=%u, h=%u",
 395                         buffers, depth, stencil, x, y, w, h);
 396 }
 397
 398 void
 399 fd_draw_init(struct pipe_context *pctx)
 400 {
 401         pctx->draw_vbo = fd_draw_vbo;
 402         pctx->clear = fd_clear;
 403         pctx->clear_render_target = fd_clear_render_target;
 404         pctx->clear_depth_stencil = fd_clear_depth_stencil;
 405 }