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
  43 static void
  44 fd_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
  45 {
  46         struct fd_context *ctx = fd_context(pctx);
  47         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
  48         struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);
  49         unsigned i, buffers = 0;
  50
  51         /* if we supported transform feedback, we'd have to disable this: */
  52         if (((scissor->maxx - scissor->minx) *
  53                         (scissor->maxy - scissor->miny)) == 0) {
  54                 return;
  55         }
  56
  57         /* emulate unsupported primitives: */
  58         if (!fd_supported_prim(ctx, info->mode)) {
  59                 util_primconvert_save_index_buffer(ctx->primconvert, &ctx->indexbuf);
  60                 util_primconvert_save_rasterizer_state(ctx->primconvert, ctx->rasterizer);
  61                 util_primconvert_draw_vbo(ctx->primconvert, info);
  62                 return;
  63         }
  64
  65         ctx->needs_flush = true;
  66
  67         /*
  68          * Figure out the buffers/features we need:
  69          */
  70
  71         if (fd_depth_enabled(ctx)) {
  72                 buffers |= FD_BUFFER_DEPTH;
  73                 fd_resource(pfb->zsbuf->texture)->dirty = true;
  74                 ctx->gmem_reason |= FD_GMEM_DEPTH_ENABLED;
  75         }
  76
  77         if (fd_stencil_enabled(ctx)) {
  78                 buffers |= FD_BUFFER_STENCIL;
  79                 fd_resource(pfb->zsbuf->texture)->dirty = true;
  80                 ctx->gmem_reason |= FD_GMEM_STENCIL_ENABLED;
  81         }
  82
  83         if (fd_logicop_enabled(ctx))
  84                 ctx->gmem_reason |= FD_GMEM_LOGICOP_ENABLED;
  85
  86         for (i = 0; i < pfb->nr_cbufs; i++) {
  87                 struct pipe_resource *surf;
  88
  89                 if (!pfb->cbufs[i])
  90                         continue;
  91
  92                 surf = pfb->cbufs[i]->texture;
  93
  94                 fd_resource(surf)->dirty = true;
  95                 buffers |= FD_BUFFER_COLOR;
  96
  97                 if (surf->nr_samples > 1)
  98                         ctx->gmem_reason |= FD_GMEM_MSAA_ENABLED;
  99
 100                 if (fd_blend_enabled(ctx, i))
 101                         ctx->gmem_reason |= FD_GMEM_BLEND_ENABLED;
 102         }
 103
 104         ctx->num_draws++;
 105
 106         ctx->stats.draw_calls++;
 107         ctx->stats.prims_emitted +=
 108                 u_reduced_prims_for_vertices(info->mode, info->count);
 109
 110         /* any buffers that haven't been cleared yet, we need to restore: */
 111         ctx->restore |= buffers & (FD_BUFFER_ALL & ~ctx->cleared);
 112         /* and any buffers used, need to be resolved: */
 113         ctx->resolve |= buffers;
 114
 115         DBG("%x num_draws=%u (%s/%s)", buffers, ctx->num_draws,
 116                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 117                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 118
 119         fd_hw_query_set_stage(ctx, ctx->ring, FD_STAGE_DRAW);
 120         ctx->draw_vbo(ctx, info);
 121
 122         /* if an app (or, well, piglit test) does many thousands of draws
 123          * without flush (or anything which implicitly flushes, like
 124          * changing render targets), we can exceed the ringbuffer size.
 125          * Since we don't currently have a sane way to wrapparound, and
 126          * we use the same buffer for both draw and tiling commands, for
 127          * now we need to do this hack and trigger flush if we are running
 128          * low on remaining space for cmds:
 129          */
 130         if (((ctx->ring->cur - ctx->ring->start) >
 131                                 (ctx->ring->size/4 - FD_TILING_COMMANDS_DWORDS)) ||
 132                         (fd_mesa_debug & FD_DBG_FLUSH))
 133                 fd_context_render(pctx);
 134 }
 135
 136 /* TODO figure out how to make better use of existing state mechanism
 137  * for clear (and possibly gmem->mem / mem->gmem) so we can (a) keep
 138  * track of what state really actually changes, and (b) reduce the code
 139  * in the a2xx/a3xx parts.
 140  */
 141
 142 static void
 143 fd_clear(struct pipe_context *pctx, unsigned buffers,
 144                 const union pipe_color_union *color, double depth, unsigned stencil)
 145 {
 146         struct fd_context *ctx = fd_context(pctx);
 147         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
 148         struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);
 149         unsigned cleared_buffers;
 150
 151         /* for bookkeeping about which buffers have been cleared (and thus
 152          * can fully or partially skip mem2gmem) we need to ignore buffers
 153          * that have already had a draw, in case apps do silly things like
 154          * clear after draw (ie. if you only clear the color buffer, but
 155          * something like alpha-test causes side effects from the draw in
 156          * the depth buffer, etc)
 157          */
 158         cleared_buffers = buffers & (FD_BUFFER_ALL & ~ctx->restore);
 159
 160         /* do we have full-screen scissor? */
 161         if (!memcmp(scissor, &ctx->disabled_scissor, sizeof(*scissor))) {
 162                 ctx->cleared |= cleared_buffers;
 163         } else {
 164                 ctx->partial_cleared |= cleared_buffers;
 165                 if (cleared_buffers & PIPE_CLEAR_COLOR)
 166                         ctx->cleared_scissor.color = *scissor;
 167                 if (cleared_buffers & PIPE_CLEAR_DEPTH)
 168                         ctx->cleared_scissor.depth = *scissor;
 169                 if (cleared_buffers & PIPE_CLEAR_STENCIL)
 170                         ctx->cleared_scissor.stencil = *scissor;
 171         }
 172         ctx->resolve |= buffers;
 173         ctx->needs_flush = true;
 174
 175         if (buffers & PIPE_CLEAR_COLOR)
 176                 fd_resource(pfb->cbufs[0]->texture)->dirty = true;
 177
 178         if (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL)) {
 179                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 180                 ctx->gmem_reason |= FD_GMEM_CLEARS_DEPTH_STENCIL;
 181         }
 182
 183         DBG("%x depth=%f, stencil=%u (%s/%s)", buffers, depth, stencil,
 184                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 185                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 186
 187         fd_hw_query_set_stage(ctx, ctx->ring, FD_STAGE_CLEAR);
 188
 189         ctx->clear(ctx, buffers, color, depth, stencil);
 190
 191         ctx->dirty |= FD_DIRTY_ZSA |
 192                         FD_DIRTY_VIEWPORT |
 193                         FD_DIRTY_RASTERIZER |
 194                         FD_DIRTY_SAMPLE_MASK |
 195                         FD_DIRTY_PROG |
 196                         FD_DIRTY_CONSTBUF |
 197                         FD_DIRTY_BLEND;
 198
 199         if (fd_mesa_debug & FD_DBG_DCLEAR)
 200                 ctx->dirty = 0xffffffff;
 201 }
 202
 203 static void
 204 fd_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps,
 205                 const union pipe_color_union *color,
 206                 unsigned x, unsigned y, unsigned w, unsigned h)
 207 {
 208         DBG("TODO: x=%u, y=%u, w=%u, h=%u", x, y, w, h);
 209 }
 210
 211 static void
 212 fd_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps,
 213                 unsigned buffers, double depth, unsigned stencil,
 214                 unsigned x, unsigned y, unsigned w, unsigned h)
 215 {
 216         DBG("TODO: buffers=%u, depth=%f, stencil=%u, x=%u, y=%u, w=%u, h=%u",
 217                         buffers, depth, stencil, x, y, w, h);
 218 }
 219
 220 void
 221 fd_draw_init(struct pipe_context *pctx)
 222 {
 223         pctx->draw_vbo = fd_draw_vbo;
 224         pctx->clear = fd_clear;
 225         pctx->clear_render_target = fd_clear_render_target;
 226         pctx->clear_depth_stencil = fd_clear_depth_stencil;
 227 }