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_used(struct fd_context *ctx, struct pipe_resource *prsc, boolean reading)
  44 {
  45         struct fd_resource *rsc;
  46
  47         if (!prsc)
  48                 return;
  49
  50         rsc = fd_resource(prsc);
  51         if (reading)
  52                 rsc->reading = true;
  53         else
  54                 rsc->writing = true;
  55         list_delinit(&rsc->list);
  56         list_addtail(&rsc->list, &ctx->used_resources);
  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 pipe_framebuffer_state *pfb = &ctx->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         /* emulate unsupported primitives: */
  74         if (!fd_supported_prim(ctx, info->mode)) {
  75                 util_primconvert_save_index_buffer(ctx->primconvert, &ctx->indexbuf);
  76                 util_primconvert_save_rasterizer_state(ctx->primconvert, ctx->rasterizer);
  77                 util_primconvert_draw_vbo(ctx->primconvert, info);
  78                 return;
  79         }
  80
  81         ctx->needs_flush = true;
  82
  83         /*
  84          * Figure out the buffers/features we need:
  85          */
  86
  87         if (fd_depth_enabled(ctx)) {
  88                 buffers |= FD_BUFFER_DEPTH;
  89                 fd_resource(pfb->zsbuf->texture)->dirty = true;
  90                 ctx->gmem_reason |= FD_GMEM_DEPTH_ENABLED;
  91         }
  92
  93         if (fd_stencil_enabled(ctx)) {
  94                 struct fd_resource *rsc = fd_resource(pfb->zsbuf->texture);
  95                 buffers |= FD_BUFFER_STENCIL;
  96                 if (rsc->stencil)
  97                         rsc->stencil->dirty = true;
  98                 else
  99                         rsc->dirty = true;
 100                 ctx->gmem_reason |= FD_GMEM_STENCIL_ENABLED;
 101         }
 102
 103         if (fd_logicop_enabled(ctx))
 104                 ctx->gmem_reason |= FD_GMEM_LOGICOP_ENABLED;
 105
 106         for (i = 0; i < pfb->nr_cbufs; i++) {
 107                 struct pipe_resource *surf;
 108
 109                 if (!pfb->cbufs[i])
 110                         continue;
 111
 112                 surf = pfb->cbufs[i]->texture;
 113
 114                 fd_resource(surf)->dirty = true;
 115                 buffers |= PIPE_CLEAR_COLOR0 << i;
 116
 117                 if (surf->nr_samples > 1)
 118                         ctx->gmem_reason |= FD_GMEM_MSAA_ENABLED;
 119
 120                 if (fd_blend_enabled(ctx, i))
 121                         ctx->gmem_reason |= FD_GMEM_BLEND_ENABLED;
 122         }
 123
 124         /* Skip over buffer 0, that is sent along with the command stream */
 125         for (i = 1; i < PIPE_MAX_CONSTANT_BUFFERS; i++) {
 126                 resource_used(ctx, ctx->constbuf[PIPE_SHADER_VERTEX].cb[i].buffer, true);
 127                 resource_used(ctx, ctx->constbuf[PIPE_SHADER_FRAGMENT].cb[i].buffer, true);
 128         }
 129
 130         /* Mark VBOs as being read */
 131         for (i = 0; i < ctx->vtx.vertexbuf.count; i++) {
 132                 assert(!ctx->vtx.vertexbuf.vb[i].user_buffer);
 133                 resource_used(ctx, ctx->vtx.vertexbuf.vb[i].buffer, true);
 134         }
 135
 136         /* Mark index buffer as being read */
 137         resource_used(ctx, ctx->indexbuf.buffer, true);
 138
 139         /* Mark textures as being read */
 140         for (i = 0; i < ctx->verttex.num_textures; i++)
 141                 if (ctx->verttex.textures[i])
 142                         resource_used(ctx, ctx->verttex.textures[i]->texture, true);
 143         for (i = 0; i < ctx->fragtex.num_textures; i++)
 144                 if (ctx->fragtex.textures[i])
 145                         resource_used(ctx, ctx->fragtex.textures[i]->texture, true);
 146
 147         /* Mark streamout buffers as being read.. actually they are written.. */
 148         for (i = 0; i < ctx->streamout.num_targets; i++)
 149                 if (ctx->streamout.targets[i])
 150                         resource_used(ctx, ctx->streamout.targets[i]->buffer, false);
 151
 152         ctx->num_draws++;
 153
 154         prims = u_reduced_prims_for_vertices(info->mode, info->count);
 155
 156         ctx->stats.draw_calls++;
 157         ctx->stats.prims_emitted += prims;
 158
 159         /* any buffers that haven't been cleared yet, we need to restore: */
 160         ctx->restore |= buffers & (FD_BUFFER_ALL & ~ctx->cleared);
 161         /* and any buffers used, need to be resolved: */
 162         ctx->resolve |= buffers;
 163
 164         DBG("%x num_draws=%u (%s/%s)", buffers, ctx->num_draws,
 165                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 166                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 167
 168         fd_hw_query_set_stage(ctx, ctx->ring, FD_STAGE_DRAW);
 169         ctx->draw_vbo(ctx, info);
 170
 171         for (i = 0; i < ctx->streamout.num_targets; i++)
 172                 ctx->streamout.offsets[i] += prims;
 173
 174         /* if an app (or, well, piglit test) does many thousands of draws
 175          * without flush (or anything which implicitly flushes, like
 176          * changing render targets), we can exceed the ringbuffer size.
 177          * Since we don't currently have a sane way to wrapparound, and
 178          * we use the same buffer for both draw and tiling commands, for
 179          * now we need to do this hack and trigger flush if we are running
 180          * low on remaining space for cmds:
 181          */
 182         if (((ctx->ring->cur - ctx->ring->start) >
 183                                 (ctx->ring->size/4 - FD_TILING_COMMANDS_DWORDS)) ||
 184                         (fd_mesa_debug & FD_DBG_FLUSH))
 185                 fd_context_render(pctx);
 186 }
 187
 188 /* TODO figure out how to make better use of existing state mechanism
 189  * for clear (and possibly gmem->mem / mem->gmem) so we can (a) keep
 190  * track of what state really actually changes, and (b) reduce the code
 191  * in the a2xx/a3xx parts.
 192  */
 193
 194 static void
 195 fd_clear(struct pipe_context *pctx, unsigned buffers,
 196                 const union pipe_color_union *color, double depth, unsigned stencil)
 197 {
 198         struct fd_context *ctx = fd_context(pctx);
 199         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
 200         struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);
 201         unsigned cleared_buffers;
 202         int i;
 203
 204         /* for bookkeeping about which buffers have been cleared (and thus
 205          * can fully or partially skip mem2gmem) we need to ignore buffers
 206          * that have already had a draw, in case apps do silly things like
 207          * clear after draw (ie. if you only clear the color buffer, but
 208          * something like alpha-test causes side effects from the draw in
 209          * the depth buffer, etc)
 210          */
 211         cleared_buffers = buffers & (FD_BUFFER_ALL & ~ctx->restore);
 212
 213         /* do we have full-screen scissor? */
 214         if (!memcmp(scissor, &ctx->disabled_scissor, sizeof(*scissor))) {
 215                 ctx->cleared |= cleared_buffers;
 216         } else {
 217                 ctx->partial_cleared |= cleared_buffers;
 218                 if (cleared_buffers & PIPE_CLEAR_COLOR)
 219                         ctx->cleared_scissor.color = *scissor;
 220                 if (cleared_buffers & PIPE_CLEAR_DEPTH)
 221                         ctx->cleared_scissor.depth = *scissor;
 222                 if (cleared_buffers & PIPE_CLEAR_STENCIL)
 223                         ctx->cleared_scissor.stencil = *scissor;
 224         }
 225         ctx->resolve |= buffers;
 226         ctx->needs_flush = true;
 227
 228         if (buffers & PIPE_CLEAR_COLOR)
 229                 for (i = 0; i < pfb->nr_cbufs; i++)
 230                         if (buffers & (PIPE_CLEAR_COLOR0 << i))
 231                                 fd_resource(pfb->cbufs[i]->texture)->dirty = true;
 232
 233         if (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL)) {
 234                 struct fd_resource *rsc = fd_resource(pfb->zsbuf->texture);
 235                 if (rsc->stencil && buffers & PIPE_CLEAR_STENCIL)
 236                         rsc->stencil->dirty = true;
 237                 if (!rsc->stencil || buffers & PIPE_CLEAR_DEPTH)
 238                         rsc->dirty = true;
 239
 240                 ctx->gmem_reason |= FD_GMEM_CLEARS_DEPTH_STENCIL;
 241         }
 242
 243         DBG("%x depth=%f, stencil=%u (%s/%s)", buffers, depth, stencil,
 244                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 245                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 246
 247         fd_hw_query_set_stage(ctx, ctx->ring, FD_STAGE_CLEAR);
 248
 249         ctx->clear(ctx, buffers, color, depth, stencil);
 250
 251         ctx->dirty |= FD_DIRTY_ZSA |
 252                         FD_DIRTY_VIEWPORT |
 253                         FD_DIRTY_RASTERIZER |
 254                         FD_DIRTY_SAMPLE_MASK |
 255                         FD_DIRTY_PROG |
 256                         FD_DIRTY_CONSTBUF |
 257                         FD_DIRTY_BLEND;
 258
 259         if (fd_mesa_debug & FD_DBG_DCLEAR)
 260                 ctx->dirty = 0xffffffff;
 261 }
 262
 263 static void
 264 fd_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps,
 265                 const union pipe_color_union *color,
 266                 unsigned x, unsigned y, unsigned w, unsigned h)
 267 {
 268         DBG("TODO: x=%u, y=%u, w=%u, h=%u", x, y, w, h);
 269 }
 270
 271 static void
 272 fd_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps,
 273                 unsigned buffers, double depth, unsigned stencil,
 274                 unsigned x, unsigned y, unsigned w, unsigned h)
 275 {
 276         DBG("TODO: buffers=%u, depth=%f, stencil=%u, x=%u, y=%u, w=%u, h=%u",
 277                         buffers, depth, stencil, x, y, w, h);
 278 }
 279
 280 void
 281 fd_draw_init(struct pipe_context *pctx)
 282 {
 283         list_inithead(&fd_context(pctx)->used_resources);
 284
 285         pctx->draw_vbo = fd_draw_vbo;
 286         pctx->clear = fd_clear;
 287         pctx->clear_render_target = fd_clear_render_target;
 288         pctx->clear_depth_stencil = fd_clear_depth_stencil;
 289 }