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

   1 /*
   2  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #include "pipe/p_state.h"
  28 #include "util/u_string.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_prim.h"
  31 #include "util/format/u_format.h"
  32
  33 #include "freedreno_state.h"
  34 #include "freedreno_resource.h"
  35
  36 #include "fd3_draw.h"
  37 #include "fd3_context.h"
  38 #include "fd3_emit.h"
  39 #include "fd3_program.h"
  40 #include "fd3_format.h"
  41 #include "fd3_zsa.h"
  42
  43 static inline uint32_t
  44 add_sat(uint32_t a, int32_t b)
  45 {
  46         int64_t ret = (uint64_t)a + (int64_t)b;
  47         if (ret > ~0U)
  48                 return ~0U;
  49         if (ret < 0)
  50                 return 0;
  51         return (uint32_t)ret;
  52 }
  53
  54 static void
  55 draw_impl(struct fd_context *ctx, struct fd_ringbuffer *ring,
  56                 struct fd3_emit *emit, unsigned index_offset)
  57 {
  58         const struct pipe_draw_info *info = emit->info;
  59         enum pc_di_primtype primtype = ctx->primtypes[info->mode];
  60
  61         fd3_emit_state(ctx, ring, emit);
  62
  63         if (emit->dirty & (FD_DIRTY_VTXBUF | FD_DIRTY_VTXSTATE))
  64                 fd3_emit_vertex_bufs(ring, emit);
  65
  66         OUT_PKT0(ring, REG_A3XX_PC_VERTEX_REUSE_BLOCK_CNTL, 1);
  67         OUT_RING(ring, 0x0000000b);             /* PC_VERTEX_REUSE_BLOCK_CNTL */
  68
  69         OUT_PKT0(ring, REG_A3XX_VFD_INDEX_MIN, 4);
  70         OUT_RING(ring, add_sat(info->min_index, info->index_bias)); /* VFD_INDEX_MIN */
  71         OUT_RING(ring, add_sat(info->max_index, info->index_bias)); /* VFD_INDEX_MAX */
  72         OUT_RING(ring, info->start_instance);   /* VFD_INSTANCEID_OFFSET */
  73         OUT_RING(ring, info->index_size ? info->index_bias : info->start); /* VFD_INDEX_OFFSET */
  74
  75         OUT_PKT0(ring, REG_A3XX_PC_RESTART_INDEX, 1);
  76         OUT_RING(ring, info->primitive_restart ? /* PC_RESTART_INDEX */
  77                         info->restart_index : 0xffffffff);
  78
  79         /* points + psize -> spritelist: */
  80         if (ctx->rasterizer->point_size_per_vertex &&
  81                         fd3_emit_get_vp(emit)->writes_psize &&
  82                         (info->mode == PIPE_PRIM_POINTS))
  83                 primtype = DI_PT_POINTLIST_PSIZE;
  84
  85         fd_draw_emit(ctx->batch, ring, primtype,
  86                         emit->binning_pass ? IGNORE_VISIBILITY : USE_VISIBILITY,
  87                         info, index_offset);
  88 }
  89
  90 /* fixup dirty shader state in case some "unrelated" (from the state-
  91  * tracker's perspective) state change causes us to switch to a
  92  * different variant.
  93  */
  94 static void
  95 fixup_shader_state(struct fd_context *ctx, struct ir3_shader_key *key)
  96 {
  97         struct fd3_context *fd3_ctx = fd3_context(ctx);
  98         struct ir3_shader_key *last_key = &fd3_ctx->last_key;
  99
 100         if (!ir3_shader_key_equal(last_key, key)) {
 101                 if (ir3_shader_key_changes_fs(last_key, key)) {
 102                         ctx->dirty_shader[PIPE_SHADER_FRAGMENT] |= FD_DIRTY_SHADER_PROG;
 103                         ctx->dirty |= FD_DIRTY_PROG;
 104                 }
 105
 106                 if (ir3_shader_key_changes_vs(last_key, key)) {
 107                         ctx->dirty_shader[PIPE_SHADER_VERTEX] |= FD_DIRTY_SHADER_PROG;
 108                         ctx->dirty |= FD_DIRTY_PROG;
 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              unsigned index_offset)
 118 {
 119         struct fd3_context *fd3_ctx = fd3_context(ctx);
 120         struct fd3_emit emit = {
 121                 .debug = &ctx->debug,
 122                 .vtx  = &ctx->vtx,
 123                 .prog = &ctx->prog,
 124                 .info = info,
 125                 .key = {
 126                         .color_two_side = ctx->rasterizer->light_twoside,
 127                         .vclamp_color = ctx->rasterizer->clamp_vertex_color,
 128                         .fclamp_color = ctx->rasterizer->clamp_fragment_color,
 129                         .has_per_samp = (fd3_ctx->fsaturate || fd3_ctx->vsaturate),
 130                         .vsaturate_s = fd3_ctx->vsaturate_s,
 131                         .vsaturate_t = fd3_ctx->vsaturate_t,
 132                         .vsaturate_r = fd3_ctx->vsaturate_r,
 133                         .fsaturate_s = fd3_ctx->fsaturate_s,
 134                         .fsaturate_t = fd3_ctx->fsaturate_t,
 135                         .fsaturate_r = fd3_ctx->fsaturate_r,
 136                 },
 137                 .rasterflat = ctx->rasterizer->flatshade,
 138                 .sprite_coord_enable = ctx->rasterizer->sprite_coord_enable,
 139                 .sprite_coord_mode = ctx->rasterizer->sprite_coord_mode,
 140         };
 141
 142         if (fd3_needs_manual_clipping(ctx->prog.vs, ctx->rasterizer))
 143                 emit.key.ucp_enables = ctx->rasterizer->clip_plane_enable;
 144
 145         fixup_shader_state(ctx, &emit.key);
 146
 147         unsigned dirty = ctx->dirty;
 148         const struct ir3_shader_variant *vp = fd3_emit_get_vp(&emit);
 149         const struct ir3_shader_variant *fp = fd3_emit_get_fp(&emit);
 150
 151         /* do regular pass first, since that is more likely to fail compiling: */
 152
 153         if (!vp || !fp)
 154                 return false;
 155
 156         ctx->stats.vs_regs += ir3_shader_halfregs(vp);
 157         ctx->stats.fs_regs += ir3_shader_halfregs(fp);
 158
 159         emit.binning_pass = false;
 160         emit.dirty = dirty;
 161         draw_impl(ctx, ctx->batch->draw, &emit, index_offset);
 162
 163         /* and now binning pass: */
 164         emit.binning_pass = true;
 165         emit.dirty = dirty & ~(FD_DIRTY_BLEND);
 166         emit.vs = NULL;   /* we changed key so need to refetch vs */
 167         emit.fs = NULL;
 168         draw_impl(ctx, ctx->batch->binning, &emit, index_offset);
 169
 170         fd_context_all_clean(ctx);
 171
 172         return true;
 173 }
 174
 175 void
 176 fd3_draw_init(struct pipe_context *pctx)
 177 {
 178         struct fd_context *ctx = fd_context(pctx);
 179         ctx->draw_vbo = fd3_draw_vbo;
 180 }