src/gallium/drivers/freedreno/a3xx/fd3_draw.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2013 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_state.h"
  36 #include "freedreno_resource.h"
  37
  38 #include "fd3_draw.h"
  39 #include "fd3_context.h"
  40 #include "fd3_emit.h"
  41 #include "fd3_program.h"
  42 #include "fd3_format.h"
  43 #include "fd3_zsa.h"
  44
  45 static inline uint32_t
  46 add_sat(uint32_t a, int32_t b)
  47 {
  48         int64_t ret = (uint64_t)a + (int64_t)b;
  49         if (ret > ~0U)
  50                 return ~0U;
  51         if (ret < 0)
  52                 return 0;
  53         return (uint32_t)ret;
  54 }
  55
  56 static void
  57 draw_impl(struct fd_context *ctx, struct fd_ringbuffer *ring,
  58                 struct fd3_emit *emit)
  59 {
  60         const struct pipe_draw_info *info = emit->info;
  61         enum pc_di_primtype primtype = ctx->primtypes[info->mode];
  62
  63         fd3_emit_state(ctx, ring, emit);
  64
  65         if (emit->dirty & (FD_DIRTY_VTXBUF | FD_DIRTY_VTXSTATE))
  66                 fd3_emit_vertex_bufs(ring, emit);
  67
  68         OUT_PKT0(ring, REG_A3XX_PC_VERTEX_REUSE_BLOCK_CNTL, 1);
  69         OUT_RING(ring, 0x0000000b);             /* PC_VERTEX_REUSE_BLOCK_CNTL */
  70
  71         OUT_PKT0(ring, REG_A3XX_VFD_INDEX_MIN, 4);
  72         OUT_RING(ring, add_sat(info->min_index, info->index_bias)); /* VFD_INDEX_MIN */
  73         OUT_RING(ring, add_sat(info->max_index, info->index_bias)); /* VFD_INDEX_MAX */
  74         OUT_RING(ring, info->start_instance);   /* VFD_INSTANCEID_OFFSET */
  75         OUT_RING(ring, info->indexed ? info->index_bias : info->start); /* VFD_INDEX_OFFSET */
  76
  77         OUT_PKT0(ring, REG_A3XX_PC_RESTART_INDEX, 1);
  78         OUT_RING(ring, info->primitive_restart ? /* PC_RESTART_INDEX */
  79                         info->restart_index : 0xffffffff);
  80
  81         /* points + psize -> spritelist: */
  82         if (ctx->rasterizer->point_size_per_vertex &&
  83                         fd3_emit_get_vp(emit)->writes_psize &&
  84                         (info->mode == PIPE_PRIM_POINTS))
  85                 primtype = DI_PT_POINTLIST_PSIZE;
  86
  87         fd_draw_emit(ctx->batch, ring, primtype,
  88                         emit->key.binning_pass ? IGNORE_VISIBILITY : USE_VISIBILITY,
  89                         info);
  90 }
  91
  92 /* fixup dirty shader state in case some "unrelated" (from the state-
  93  * tracker's perspective) state change causes us to switch to a
  94  * different variant.
  95  */
  96 static void
  97 fixup_shader_state(struct fd_context *ctx, struct ir3_shader_key *key)
  98 {
  99         struct fd3_context *fd3_ctx = fd3_context(ctx);
 100         struct ir3_shader_key *last_key = &fd3_ctx->last_key;
 101
 102         if (!ir3_shader_key_equal(last_key, key)) {
 103                 if (ir3_shader_key_changes_fs(last_key, key)) {
 104                         ctx->dirty |= FD_SHADER_DIRTY_FP;
 105                 }
 106
 107                 if (ir3_shader_key_changes_vs(last_key, key)) {
 108                         ctx->dirty |= FD_SHADER_DIRTY_VP;
 109                 }
 110
 111                 fd3_ctx->last_key = *key;
 112         }
 113 }
 114
 115 static bool
 116 fd3_draw_vbo(struct fd_context *ctx, const struct pipe_draw_info *info)
 117 {
 118         struct fd3_context *fd3_ctx = fd3_context(ctx);
 119         struct fd3_emit emit = {
 120                 .debug = &ctx->debug,
 121                 .vtx  = &ctx->vtx,
 122                 .prog = &ctx->prog,
 123                 .info = info,
 124                 .key = {
 125                         .color_two_side = ctx->rasterizer->light_twoside,
 126                         .vclamp_color = ctx->rasterizer->clamp_vertex_color,
 127                         .fclamp_color = ctx->rasterizer->clamp_fragment_color,
 128                         .half_precision = ctx->in_blit &&
 129                                         fd_half_precision(&ctx->batch->framebuffer),
 130                         .has_per_samp = (fd3_ctx->fsaturate || fd3_ctx->vsaturate),
 131                         .vsaturate_s = fd3_ctx->vsaturate_s,
 132                         .vsaturate_t = fd3_ctx->vsaturate_t,
 133                         .vsaturate_r = fd3_ctx->vsaturate_r,
 134                         .fsaturate_s = fd3_ctx->fsaturate_s,
 135                         .fsaturate_t = fd3_ctx->fsaturate_t,
 136                         .fsaturate_r = fd3_ctx->fsaturate_r,
 137                 },
 138                 .rasterflat = ctx->rasterizer->flatshade,
 139                 .sprite_coord_enable = ctx->rasterizer->sprite_coord_enable,
 140                 .sprite_coord_mode = ctx->rasterizer->sprite_coord_mode,
 141         };
 142
 143         if (fd3_needs_manual_clipping(ctx->prog.vp, ctx->rasterizer))
 144                 emit.key.ucp_enables = ctx->rasterizer->clip_plane_enable;
 145
 146         fixup_shader_state(ctx, &emit.key);
 147
 148         unsigned dirty = ctx->dirty;
 149
 150         /* do regular pass first, since that is more likely to fail compiling: */
 151
 152         if (!(fd3_emit_get_vp(&emit) && fd3_emit_get_fp(&emit)))
 153                 return false;
 154
 155         emit.key.binning_pass = false;
 156         emit.dirty = dirty;
 157         draw_impl(ctx, ctx->batch->draw, &emit);
 158
 159         /* and now binning pass: */
 160         emit.key.binning_pass = true;
 161         emit.dirty = dirty & ~(FD_DIRTY_BLEND);
 162         emit.vp = NULL;   /* we changed key so need to refetch vp */
 163         emit.fp = NULL;
 164         draw_impl(ctx, ctx->batch->binning, &emit);
 165
 166         return true;
 167 }
 168
 169 void
 170 fd3_draw_init(struct pipe_context *pctx)
 171 {
 172         struct fd_context *ctx = fd_context(pctx);
 173         ctx->draw_vbo = fd3_draw_vbo;
 174 }