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