nv50: re-add immediate mode vertex submission paths

1 files changed, 357 insertions, 0 deletions

diff --git a/src/gallium/drivers/nv50/nv50_push.c b/src/gallium/drivers/nv50/nv50_push.c
new file mode 100644
index 00000000000..b615f4e0549
--- /dev/null
+++ b/src/gallium/drivers/nv50/nv50_push.c
@@ -0,0 +1,357 @@
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+
+#include "nouveau/nouveau_util.h"
+#include "nv50_context.h"
+
+static INLINE unsigned
+nv50_prim(unsigned mode)
+{
+   switch (mode) {
+   case PIPE_PRIM_POINTS: return NV50TCL_VERTEX_BEGIN_POINTS;
+   case PIPE_PRIM_LINES: return NV50TCL_VERTEX_BEGIN_LINES;
+   case PIPE_PRIM_LINE_LOOP: return NV50TCL_VERTEX_BEGIN_LINE_LOOP;
+   case PIPE_PRIM_LINE_STRIP: return NV50TCL_VERTEX_BEGIN_LINE_STRIP;
+   case PIPE_PRIM_TRIANGLES: return NV50TCL_VERTEX_BEGIN_TRIANGLES;
+   case PIPE_PRIM_TRIANGLE_STRIP:
+      return NV50TCL_VERTEX_BEGIN_TRIANGLE_STRIP;
+   case PIPE_PRIM_TRIANGLE_FAN: return NV50TCL_VERTEX_BEGIN_TRIANGLE_FAN;
+   case PIPE_PRIM_QUADS: return NV50TCL_VERTEX_BEGIN_QUADS;
+   case PIPE_PRIM_QUAD_STRIP: return NV50TCL_VERTEX_BEGIN_QUAD_STRIP;
+   case PIPE_PRIM_POLYGON: return NV50TCL_VERTEX_BEGIN_POLYGON;
+   case PIPE_PRIM_LINES_ADJACENCY:
+      return NV50TCL_VERTEX_BEGIN_LINES_ADJACENCY;
+   case PIPE_PRIM_LINE_STRIP_ADJACENCY:
+      return NV50TCL_VERTEX_BEGIN_LINE_STRIP_ADJACENCY;
+   case PIPE_PRIM_TRIANGLES_ADJACENCY:
+      return NV50TCL_VERTEX_BEGIN_TRIANGLES_ADJACENCY;
+   case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
+      return NV50TCL_VERTEX_BEGIN_TRIANGLE_STRIP_ADJACENCY;
+   default:
+      break;
+   }
+
+   NOUVEAU_ERR("invalid primitive type %d\n", mode);
+   return NV50TCL_VERTEX_BEGIN_POINTS;
+}
+
+struct push_context {
+   struct nv50_context *nv50;
+
+   unsigned vtx_size;
+
+   void *idxbuf;
+   unsigned idxsize;
+
+   float edgeflag;
+   int edgeflag_attr;
+
+   struct {
+      void *map;
+      unsigned stride;
+      unsigned divisor;
+      unsigned step;
+      void (*push)(struct nouveau_channel *, void *);
+   } attr[16];
+   unsigned attr_nr;
+};
+
+static void
+emit_b32_1(struct nouveau_channel *chan, void *data)
+{
+   uint32_t *v = data;
+
+   OUT_RING(chan, v[0]);
+}
+
+static void
+emit_b32_2(struct nouveau_channel *chan, void *data)
+{
+   uint32_t *v = data;
+
+   OUT_RING(chan, v[0]);
+   OUT_RING(chan, v[1]);
+}
+
+static void
+emit_b32_3(struct nouveau_channel *chan, void *data)
+{
+   uint32_t *v = data;
+
+   OUT_RING(chan, v[0]);
+   OUT_RING(chan, v[1]);
+   OUT_RING(chan, v[2]);
+}
+
+static void
+emit_b32_4(struct nouveau_channel *chan, void *data)
+{
+   uint32_t *v = data;
+
+   OUT_RING(chan, v[0]);
+   OUT_RING(chan, v[1]);
+   OUT_RING(chan, v[2]);
+   OUT_RING(chan, v[3]);
+}
+
+static void
+emit_b16_1(struct nouveau_channel *chan, void *data)
+{
+   uint16_t *v = data;
+
+   OUT_RING(chan, v[0]);
+}
+
+static void
+emit_b16_3(struct nouveau_channel *chan, void *data)
+{
+   uint16_t *v = data;
+
+   OUT_RING(chan, (v[1] << 16) | v[0]);
+   OUT_RING(chan, v[2]);
+}
+
+static void
+emit_b08_1(struct nouveau_channel *chan, void *data)
+{
+   uint8_t *v = data;
+
+   OUT_RING(chan, v[0]);
+}
+
+static void
+emit_b08_3(struct nouveau_channel *chan, void *data)
+{
+   uint8_t *v = data;
+
+   OUT_RING(chan, (v[2] << 16) | (v[1] << 8) | v[0]);
+}
+
+static INLINE void
+emit_vertex(struct push_context *ctx, unsigned n)
+{
+   struct nouveau_grobj *tesla = ctx->nv50->screen->tesla;
+   struct nouveau_channel *chan = tesla->channel;
+   int i;
+
+   if (ctx->edgeflag_attr < 16) {
+      float *edgeflag = ctx->attr[ctx->edgeflag_attr].map +
+                        ctx->attr[ctx->edgeflag_attr].stride * n;
+
+      if (*edgeflag != ctx->edgeflag) {
+         BEGIN_RING(chan, tesla, NV50TCL_EDGEFLAG_ENABLE, 1);
+         OUT_RING  (chan, *edgeflag ? 1 : 0);
+         ctx->edgeflag = *edgeflag;
+      }
+   }
+
+   BEGIN_RING_NI(chan, tesla, NV50TCL_VERTEX_DATA, ctx->vtx_size);
+   for (i = 0; i < ctx->attr_nr; i++)
+      ctx->attr[i].push(chan, ctx->attr[i].map + ctx->attr[i].stride * n);
+}
+
+static void
+emit_edgeflag(void *priv, boolean enabled)
+{
+   struct push_context *ctx = priv;
+   struct nouveau_grobj *tesla = ctx->nv50->screen->tesla;
+   struct nouveau_channel *chan = tesla->channel;
+
+   BEGIN_RING(chan, tesla, NV50TCL_EDGEFLAG_ENABLE, 1);
+   OUT_RING  (chan, enabled ? 1 : 0);
+}
+
+static void
+emit_elt08(void *priv, unsigned start, unsigned count)
+{
+   struct push_context *ctx = priv;
+   uint8_t *idxbuf = ctx->idxbuf;
+
+   while (count--)
+      emit_vertex(ctx, idxbuf[start++]);
+}
+
+static void
+emit_elt16(void *priv, unsigned start, unsigned count)
+{
+   struct push_context *ctx = priv;
+   uint16_t *idxbuf = ctx->idxbuf;
+
+   while (count--)
+      emit_vertex(ctx, idxbuf[start++]);
+}
+
+static void
+emit_elt32(void *priv, unsigned start, unsigned count)
+{
+   struct push_context *ctx = priv;
+   uint32_t *idxbuf = ctx->idxbuf;
+
+   while (count--)
+      emit_vertex(ctx, idxbuf[start++]);
+}
+
+static void
+emit_verts(void *priv, unsigned start, unsigned count)
+{
+   while (count--)
+      emit_vertex(priv, start++);
+}
+
+void
+nv50_push_elements_instanced(struct pipe_context *pipe,
+                             struct pipe_buffer *idxbuf, unsigned idxsize,
+                             unsigned mode, unsigned start, unsigned count,
+                             unsigned i_start, unsigned i_count)
+{
+   struct nv50_context *nv50 = nv50_context(pipe);
+   struct nouveau_grobj *tesla = nv50->screen->tesla;
+   struct nouveau_channel *chan = tesla->channel;
+   struct push_context ctx;
+   const unsigned p_overhead = 4 + /* begin/end */
+                               4; /* potential edgeflag enable/disable */
+   const unsigned v_overhead = 1 + /* VERTEX_DATA packet header */
+                               2; /* potential edgeflag modification */
+   struct u_split_prim s;
+   unsigned vtx_size;
+   boolean nzi = FALSE;
+   int i;
+
+   ctx.nv50 = nv50;
+   ctx.attr_nr = 0;
+   ctx.idxbuf = NULL;
+   ctx.vtx_size = 0;
+   ctx.edgeflag = 0.5f;
+   ctx.edgeflag_attr = nv50->vertprog->cfg.edgeflag_in;
+
+   /* map vertex buffers, determine vertex size */
+   for (i = 0; i < nv50->vtxelt->num_elements; i++) {
+      struct pipe_vertex_element *ve = &nv50->vtxelt->pipe[i];
+      struct pipe_vertex_buffer *vb = &nv50->vtxbuf[ve->vertex_buffer_index];
+      struct nouveau_bo *bo = nouveau_bo(vb->buffer);
+      unsigned size, nr_components, n;
+
+      if (!(nv50->vbo_fifo & (1 << i)))
+         continue;
+      n = ctx.attr_nr++;
+
+      if (nouveau_bo_map(bo, NOUVEAU_BO_RD)) {
+         assert(bo->map);
+         return;
+      }
+      ctx.attr[n].map = bo->map + vb->buffer_offset + ve->src_offset;
+      nouveau_bo_unmap(bo);
+
+      ctx.attr[n].stride = vb->stride;
+      ctx.attr[n].divisor = ve->instance_divisor;
+      if (ctx.attr[n].divisor) {
+         ctx.attr[n].step = i_start % ve->instance_divisor;
+         ctx.attr[n].map += i_start * vb->stride;
+      }
+
+      size = util_format_get_component_bits(ve->src_format,
+                                            UTIL_FORMAT_COLORSPACE_RGB, 0);
+      nr_components = util_format_get_nr_components(ve->src_format);
+      switch (size) {
+      case 8:
+         switch (nr_components) {
+         case 1: ctx.attr[n].push = emit_b08_1; break;
+         case 2: ctx.attr[n].push = emit_b16_1; break;
+         case 3: ctx.attr[n].push = emit_b08_3; break;
+         case 4: ctx.attr[n].push = emit_b32_1; break;
+         }
+         ctx.vtx_size++;
+         break;
+      case 16:
+         switch (nr_components) {
+         case 1: ctx.attr[n].push = emit_b16_1; break;
+         case 2: ctx.attr[n].push = emit_b32_1; break;
+         case 3: ctx.attr[n].push = emit_b16_3; break;
+         case 4: ctx.attr[n].push = emit_b32_2; break;
+         }
+         ctx.vtx_size += (nr_components + 1) >> 1;
+         break;
+      case 32:
+         switch (nr_components) {
+         case 1: ctx.attr[n].push = emit_b32_1; break;
+         case 2: ctx.attr[n].push = emit_b32_2; break;
+         case 3: ctx.attr[n].push = emit_b32_3; break;
+         case 4: ctx.attr[n].push = emit_b32_4; break;
+         }
+         ctx.vtx_size += nr_components;
+         break;
+      default:
+         assert(0);
+         return;
+      }
+   }
+   vtx_size = ctx.vtx_size + v_overhead;
+
+   /* map index buffer, if present */
+   if (idxbuf) {
+      struct nouveau_bo *bo = nouveau_bo(idxbuf);
+
+      if (nouveau_bo_map(bo, NOUVEAU_BO_RD)) {
+         assert(bo->map);
+         return;
+      }
+      ctx.idxbuf = bo->map;
+      ctx.idxsize = idxsize;
+      nouveau_bo_unmap(bo);
+   }
+
+   s.priv = &ctx;
+   s.edge = emit_edgeflag;
+   if (idxbuf) {
+      if (idxsize == 1)
+         s.emit = emit_elt08;
+      else
+      if (idxsize == 2)
+         s.emit = emit_elt16;
+      else
+         s.emit = emit_elt32;
+   } else
+      s.emit = emit_verts;
+
+   /* per-instance loop */
+   BEGIN_RING(chan, tesla, NV50TCL_CB_ADDR, 2);
+   OUT_RING  (chan, NV50_CB_AUX | (24 << 8));
+   OUT_RING  (chan, i_start);
+   while (i_count--) {
+      unsigned max_verts;
+      boolean done;
+
+      for (i = 0; i < ctx.attr_nr; i++) {
+         if (!ctx.attr[i].divisor ||
+              ctx.attr[i].divisor != ++ctx.attr[i].step)
+            continue;
+         ctx.attr[i].step = 0;
+         ctx.attr[i].map += ctx.attr[i].stride;
+      }
+
+      u_split_prim_init(&s, mode, start, count);
+      do {
+         if (AVAIL_RING(chan) < p_overhead + (6 * vtx_size)) {
+            FIRE_RING(chan);
+            if (!nv50_state_validate(nv50, p_overhead + (6 * vtx_size))) {
+               assert(0);
+               return;
+            }
+         }
+
+         max_verts  = AVAIL_RING(chan);
+         max_verts -= p_overhead;
+         max_verts /= vtx_size;
+
+         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
+         OUT_RING  (chan, nv50_prim(s.mode) | (nzi ? (1 << 28) : 0));
+         done = u_split_prim_next(&s, max_verts);
+         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
+         OUT_RING  (chan, 0);
+      } while (!done);
+
+      nzi = TRUE;
+   }
+}