src/gallium/drivers/nvfx/nvfx_draw.c

   1 #include "pipe/p_shader_tokens.h"
   2 #include "util/u_inlines.h"
   3
   4 #include "util/u_pack_color.h"
   5
   6 #include "draw/draw_context.h"
   7 #include "draw/draw_vertex.h"
   8 #include "draw/draw_pipe.h"
   9
  10 #include "nvfx_context.h"
  11 #include "nvfx_resource.h"
  12
  13 struct nvfx_render_stage {
  14         struct draw_stage stage;
  15         struct nvfx_context *nvfx;
  16         unsigned prim;
  17 };
  18
  19 static INLINE struct nvfx_render_stage *
  20 nvfx_render_stage(struct draw_stage *stage)
  21 {
  22         return (struct nvfx_render_stage *)stage;
  23 }
  24
  25 static void
  26 nvfx_render_flush(struct draw_stage *stage, unsigned flags)
  27 {
  28         struct nvfx_render_stage *rs = nvfx_render_stage(stage);
  29         struct nvfx_context *nvfx = rs->nvfx;
  30         struct nouveau_channel *chan = nvfx->screen->base.channel;
  31         struct nouveau_grobj *eng3d = nvfx->screen->eng3d;
  32
  33         if (rs->prim != NV30_3D_VERTEX_BEGIN_END_STOP) {
  34                 BEGIN_RING(chan, eng3d, NV30_3D_VERTEX_BEGIN_END, 1);
  35                 OUT_RING(chan, NV30_3D_VERTEX_BEGIN_END_STOP);
  36                 rs->prim = NV30_3D_VERTEX_BEGIN_END_STOP;
  37         }
  38 }
  39
  40 static INLINE void
  41 nvfx_render_prim(struct draw_stage *stage, struct prim_header *prim,
  42                unsigned mode, unsigned count)
  43 {
  44         struct nvfx_render_stage *rs = nvfx_render_stage(stage);
  45         struct nvfx_context *nvfx = rs->nvfx;
  46
  47         struct nvfx_screen *screen = nvfx->screen;
  48         struct nouveau_channel *chan = screen->base.channel;
  49         struct nouveau_grobj *eng3d = screen->eng3d;
  50         boolean no_elements = nvfx->vertprog->draw_no_elements;
  51         unsigned num_attribs = nvfx->vertprog->draw_elements;
  52
  53         /* we need to account the flush as well here even if it is done afterthis
  54          * function
  55          */
  56         if (AVAIL_RING(chan) < ((1 + count * num_attribs * 4) + 6 + 64)) {
  57                 nvfx_render_flush(stage, 0);
  58                 FIRE_RING(chan);
  59                 nvfx_state_emit(nvfx);
  60
  61                 assert(AVAIL_RING(chan) >= ((1 + count * num_attribs * 4) + 6 + 64));
  62         }
  63
  64         /* Switch primitive modes if necessary */
  65         if (rs->prim != mode) {
  66                 if (rs->prim != NV30_3D_VERTEX_BEGIN_END_STOP) {
  67                         BEGIN_RING(chan, eng3d, NV30_3D_VERTEX_BEGIN_END, 1);
  68                         OUT_RING(chan, NV30_3D_VERTEX_BEGIN_END_STOP);
  69                 }
  70
  71                 /* XXX: any command a lot of times seems to (mostly) fix corruption that would otherwise happen */
  72                 /* this seems to cause issues on nv3x, and also be unneeded there */
  73                 if(nvfx->is_nv4x)
  74                 {
  75                         int i;
  76                         for(i = 0; i < 32; ++i)
  77                         {
  78                                 BEGIN_RING(chan, eng3d, 0x1dac, 1);
  79                                 OUT_RING(chan, 0);
  80                         }
  81                 }
  82
  83                 BEGIN_RING(chan, eng3d, NV30_3D_VERTEX_BEGIN_END, 1);
  84                 OUT_RING  (chan, mode);
  85                 rs->prim = mode;
  86         }
  87
  88         if(no_elements) {
  89                 BEGIN_RING_NI(chan, eng3d, NV30_3D_VERTEX_DATA, 4);
  90                 OUT_RING(chan, 0);
  91                 OUT_RING(chan, 0);
  92                 OUT_RING(chan, 0);
  93                 OUT_RING(chan, 0);
  94         } else {
  95                 BEGIN_RING_NI(chan, eng3d, NV30_3D_VERTEX_DATA, num_attribs * 4 * count);
  96                 for (unsigned i = 0; i < count; ++i)
  97                 {
  98                         struct vertex_header* v = prim->v[i];
  99                         /* TODO: disable divide where it's causing the problem, and remove this hack */
 100                         OUT_RING(chan, fui(v->data[0][0] / v->data[0][3]));
 101                         OUT_RING(chan, fui(v->data[0][1] / v->data[0][3]));
 102                         OUT_RING(chan, fui(v->data[0][2] / v->data[0][3]));
 103                         OUT_RING(chan, fui(1.0f / v->data[0][3]));
 104                         OUT_RINGp(chan, &v->data[1][0], 4 * (num_attribs - 1));
 105                 }
 106         }
 107 }
 108
 109 static void
 110 nvfx_render_point(struct draw_stage *draw, struct prim_header *prim)
 111 {
 112         nvfx_render_prim(draw, prim, NV30_3D_VERTEX_BEGIN_END_POINTS, 1);
 113 }
 114
 115 static void
 116 nvfx_render_line(struct draw_stage *draw, struct prim_header *prim)
 117 {
 118         nvfx_render_prim(draw, prim, NV30_3D_VERTEX_BEGIN_END_LINES, 2);
 119 }
 120
 121 static void
 122 nvfx_render_tri(struct draw_stage *draw, struct prim_header *prim)
 123 {
 124         nvfx_render_prim(draw, prim, NV30_3D_VERTEX_BEGIN_END_TRIANGLES, 3);
 125 }
 126
 127 static void
 128 nvfx_render_reset_stipple_counter(struct draw_stage *draw)
 129 {
 130         /* this doesn't really seem to work, but it matters rather little */
 131         nvfx_render_flush(draw, 0);
 132 }
 133
 134 static void
 135 nvfx_render_destroy(struct draw_stage *draw)
 136 {
 137         FREE(draw);
 138 }
 139
 140 struct draw_stage *
 141 nvfx_draw_render_stage(struct nvfx_context *nvfx)
 142 {
 143         struct nvfx_render_stage *render = CALLOC_STRUCT(nvfx_render_stage);
 144
 145         render->nvfx = nvfx;
 146         render->stage.draw = nvfx->draw;
 147         render->stage.point = nvfx_render_point;
 148         render->stage.line = nvfx_render_line;
 149         render->stage.tri = nvfx_render_tri;
 150         render->stage.flush = nvfx_render_flush;
 151         render->stage.reset_stipple_counter = nvfx_render_reset_stipple_counter;
 152         render->stage.destroy = nvfx_render_destroy;
 153
 154         return &render->stage;
 155 }
 156
 157 void
 158 nvfx_draw_vbo_swtnl(struct pipe_context *pipe, const struct pipe_draw_info* info)
 159 {
 160         struct nvfx_context *nvfx = nvfx_context(pipe);
 161         unsigned i;
 162         void *map;
 163
 164         if (!nvfx_state_validate_swtnl(nvfx))
 165                 return;
 166
 167         nvfx_state_emit(nvfx);
 168
 169         /* these must be passed without adding the offsets */
 170         for (i = 0; i < nvfx->vtxbuf_nr; i++) {
 171                 map = nvfx_buffer(nvfx->vtxbuf[i].buffer)->data;
 172                 draw_set_mapped_vertex_buffer(nvfx->draw, i, map);
 173         }
 174
 175         map = NULL;
 176         if (info->indexed && nvfx->idxbuf.buffer)
 177                 map = nvfx_buffer(nvfx->idxbuf.buffer)->data;
 178         draw_set_mapped_index_buffer(nvfx->draw, map);
 179
 180         if (nvfx->constbuf[PIPE_SHADER_VERTEX]) {
 181                 const unsigned nr = nvfx->constbuf_nr[PIPE_SHADER_VERTEX];
 182
 183                 map = nvfx_buffer(nvfx->constbuf[PIPE_SHADER_VERTEX])->data;
 184                 draw_set_mapped_constant_buffer(nvfx->draw, PIPE_SHADER_VERTEX, 0,
 185                                                 map, nr);
 186         }
 187
 188         draw_vbo(nvfx->draw, info);
 189
 190         draw_flush(nvfx->draw);
 191 }