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 enum pc_di_index_size
  44 size2indextype(unsigned index_size)
  45 {
  46         switch (index_size) {
  47         case 1: return INDEX_SIZE_8_BIT;
  48         case 2: return INDEX_SIZE_16_BIT;
  49         case 4: return INDEX_SIZE_32_BIT;
  50         }
  51         DBG("unsupported index size: %d", index_size);
  52         assert(0);
  53         return INDEX_SIZE_IGN;
  54 }
  55
  56 /* this is same for a2xx/a3xx, so split into helper: */
  57 void
  58 fd_draw_emit(struct fd_context *ctx, struct fd_ringbuffer *ring,
  59                 enum pc_di_vis_cull_mode vismode,
  60                 const struct pipe_draw_info *info)
  61 {
  62         struct pipe_index_buffer *idx = &ctx->indexbuf;
  63         struct fd_bo *idx_bo = NULL;
  64         enum pc_di_index_size idx_type = INDEX_SIZE_IGN;
  65         enum pc_di_src_sel src_sel;
  66         uint32_t idx_size, idx_offset;
  67
  68         if (info->indexed) {
  69                 assert(!idx->user_buffer);
  70
  71                 idx_bo = fd_resource(idx->buffer)->bo;
  72                 idx_type = size2indextype(idx->index_size);
  73                 idx_size = idx->index_size * info->count;
  74                 idx_offset = idx->offset + (info->start * idx->index_size);
  75                 src_sel = DI_SRC_SEL_DMA;
  76         } else {
  77                 idx_bo = NULL;
  78                 idx_type = INDEX_SIZE_IGN;
  79                 idx_size = 0;
  80                 idx_offset = 0;
  81                 src_sel = DI_SRC_SEL_AUTO_INDEX;
  82         }
  83
  84         fd_draw(ctx, ring, ctx->primtypes[info->mode], vismode, src_sel,
  85                         info->count, idx_type, idx_size, idx_offset, idx_bo);
  86 }
  87
  88 static void
  89 fd_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
  90 {
  91         struct fd_context *ctx = fd_context(pctx);
  92         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
  93         struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);
  94         unsigned i, buffers = 0;
  95
  96         /* if we supported transform feedback, we'd have to disable this: */
  97         if (((scissor->maxx - scissor->minx) *
  98                         (scissor->maxy - scissor->miny)) == 0) {
  99                 return;
 100         }
 101
 102         /* emulate unsupported primitives: */
 103         if (!fd_supported_prim(ctx, info->mode)) {
 104                 util_primconvert_save_index_buffer(ctx->primconvert, &ctx->indexbuf);
 105                 util_primconvert_save_rasterizer_state(ctx->primconvert, ctx->rasterizer);
 106                 util_primconvert_draw_vbo(ctx->primconvert, info);
 107                 return;
 108         }
 109
 110         ctx->needs_flush = true;
 111
 112         /*
 113          * Figure out the buffers/features we need:
 114          */
 115
 116         if (fd_depth_enabled(ctx)) {
 117                 buffers |= FD_BUFFER_DEPTH;
 118                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 119                 ctx->gmem_reason |= FD_GMEM_DEPTH_ENABLED;
 120         }
 121
 122         if (fd_stencil_enabled(ctx)) {
 123                 buffers |= FD_BUFFER_STENCIL;
 124                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 125                 ctx->gmem_reason |= FD_GMEM_STENCIL_ENABLED;
 126         }
 127
 128         if (fd_logicop_enabled(ctx))
 129                 ctx->gmem_reason |= FD_GMEM_LOGICOP_ENABLED;
 130
 131         for (i = 0; i < pfb->nr_cbufs; i++) {
 132                 struct pipe_resource *surf;
 133
 134                 if (!pfb->cbufs[i])
 135                         continue;
 136
 137                 surf = pfb->cbufs[i]->texture;
 138
 139                 fd_resource(surf)->dirty = true;
 140                 buffers |= FD_BUFFER_COLOR;
 141
 142                 if (surf->nr_samples > 1)
 143                         ctx->gmem_reason |= FD_GMEM_MSAA_ENABLED;
 144
 145                 if (fd_blend_enabled(ctx, i))
 146                         ctx->gmem_reason |= FD_GMEM_BLEND_ENABLED;
 147         }
 148
 149         ctx->num_draws++;
 150
 151         ctx->stats.draw_calls++;
 152         ctx->stats.prims_emitted +=
 153                 u_reduced_prims_for_vertices(info->mode, info->count);
 154
 155         /* any buffers that haven't been cleared, we need to restore: */
 156         ctx->restore |= buffers & (FD_BUFFER_ALL & ~ctx->cleared);
 157         /* and any buffers used, need to be resolved: */
 158         ctx->resolve |= buffers;
 159
 160         DBG("%x num_draws=%u (%s/%s)", buffers, ctx->num_draws,
 161                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 162                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 163
 164         fd_hw_query_set_stage(ctx, ctx->ring, FD_STAGE_DRAW);
 165         ctx->draw(ctx, info);
 166
 167         /* if an app (or, well, piglit test) does many thousands of draws
 168          * without flush (or anything which implicitly flushes, like
 169          * changing render targets), we can exceed the ringbuffer size.
 170          * Since we don't currently have a sane way to wrapparound, and
 171          * we use the same buffer for both draw and tiling commands, for
 172          * now we need to do this hack and trigger flush if we are running
 173          * low on remaining space for cmds:
 174          */
 175         if ((ctx->ring->cur - ctx->ring->start) > ctx->ring->size/8)
 176                 fd_context_render(pctx);
 177 }
 178
 179 /* TODO figure out how to make better use of existing state mechanism
 180  * for clear (and possibly gmem->mem / mem->gmem) so we can (a) keep
 181  * track of what state really actually changes, and (b) reduce the code
 182  * in the a2xx/a3xx parts.
 183  */
 184
 185 static void
 186 fd_clear(struct pipe_context *pctx, unsigned buffers,
 187                 const union pipe_color_union *color, double depth, unsigned stencil)
 188 {
 189         struct fd_context *ctx = fd_context(pctx);
 190         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
 191
 192         ctx->cleared |= buffers;
 193         ctx->resolve |= buffers;
 194         ctx->needs_flush = true;
 195
 196         if (buffers & PIPE_CLEAR_COLOR)
 197                 fd_resource(pfb->cbufs[0]->texture)->dirty = true;
 198
 199         if (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL)) {
 200                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 201                 ctx->gmem_reason |= FD_GMEM_CLEARS_DEPTH_STENCIL;
 202         }
 203
 204         DBG("%x depth=%f, stencil=%u (%s/%s)", buffers, depth, stencil,
 205                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 206                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 207
 208         fd_hw_query_set_stage(ctx, ctx->ring, FD_STAGE_CLEAR);
 209
 210         ctx->clear(ctx, buffers, color, depth, stencil);
 211
 212         ctx->dirty |= FD_DIRTY_ZSA |
 213                         FD_DIRTY_VIEWPORT |
 214                         FD_DIRTY_RASTERIZER |
 215                         FD_DIRTY_SAMPLE_MASK |
 216                         FD_DIRTY_PROG |
 217                         FD_DIRTY_CONSTBUF |
 218                         FD_DIRTY_BLEND;
 219
 220         if (fd_mesa_debug & FD_DBG_DCLEAR)
 221                 ctx->dirty = 0xffffffff;
 222 }
 223
 224 static void
 225 fd_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps,
 226                 const union pipe_color_union *color,
 227                 unsigned x, unsigned y, unsigned w, unsigned h)
 228 {
 229         DBG("TODO: x=%u, y=%u, w=%u, h=%u", x, y, w, h);
 230 }
 231
 232 static void
 233 fd_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps,
 234                 unsigned buffers, double depth, unsigned stencil,
 235                 unsigned x, unsigned y, unsigned w, unsigned h)
 236 {
 237         DBG("TODO: buffers=%u, depth=%f, stencil=%u, x=%u, y=%u, w=%u, h=%u",
 238                         buffers, depth, stencil, x, y, w, h);
 239 }
 240
 241 void
 242 fd_draw_init(struct pipe_context *pctx)
 243 {
 244         pctx->draw_vbo = fd_draw_vbo;
 245         pctx->clear = fd_clear;
 246         pctx->clear_render_target = fd_clear_render_target;
 247         pctx->clear_depth_stencil = fd_clear_depth_stencil;
 248 }