On 02/14/2012 08:46 PM, Eric Anholt wrote:
With this and the previous patch, 640x480 nexuiz is running 0.169118%
+/- 0.0863696% faster (n=121).  On a VS state change microbenchmark,
performance is increased 8.28645% +/- 0.460478% (n=52).

---

To those who saw me throwing my hands in the air saying "why does this
patch not show up in the microbenchmark!?" today, it turns out I was
smashing the environment in the test run so I was testing the old mesa
for both configurations.

  src/mesa/drivers/dri/i965/brw_clip.c           |    2 +-
  src/mesa/drivers/dri/i965/brw_context.h        |    5 ++---
  src/mesa/drivers/dri/i965/brw_gs.c             |    2 +-
  src/mesa/drivers/dri/i965/brw_sf.c             |    2 +-
  src/mesa/drivers/dri/i965/brw_vec4_emit.cpp    |    2 +-
  src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp |   12 +++++-------
  src/mesa/drivers/dri/i965/brw_vs.c             |   16 +++++++++-------
  src/mesa/drivers/dri/i965/brw_vs.h             |    1 -
  src/mesa/drivers/dri/i965/brw_vs_emit.c        |   20 +++++++++-----------
  src/mesa/drivers/dri/i965/gen6_sf_state.c      |   10 +++++-----
  src/mesa/drivers/dri/i965/gen7_sf_state.c      |   10 +++++-----
  src/mesa/drivers/dri/i965/gen7_sol_state.c     |    9 +++------
  12 files changed, 42 insertions(+), 49 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_clip.c 
b/src/mesa/drivers/dri/i965/brw_clip.c
index 5b5f551..d411208 100644
--- a/src/mesa/drivers/dri/i965/brw_clip.c
+++ b/src/mesa/drivers/dri/i965/brw_clip.c
@@ -69,7 +69,7 @@ static void compile_clip_prog( struct brw_context *brw,
     c.func.single_program_flow = 1;

     c.key = *key;
-   brw_compute_vue_map(&c.vue_map, intel, brw->vs.prog_data);
+   c.vue_map = brw->vs.prog_data->vue_map;

     /* nr_regs is the number of registers filled by reading data from the VUE.
      * This program accesses the entire VUE, so nr_regs needs to be the size of
diff --git a/src/mesa/drivers/dri/i965/brw_context.h 
b/src/mesa/drivers/dri/i965/brw_context.h
index c6860a7..503585c 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -381,6 +381,8 @@ struct brw_gs_prog_data {
  };

  struct brw_vs_prog_data {
+   struct brw_vue_map vue_map;
+
     GLuint curb_read_length;
     GLuint urb_read_length;
     GLuint total_grf;
@@ -1045,9 +1047,6 @@ void brw_upload_cs_urb_state(struct brw_context *brw);
  int brw_disasm (FILE *file, struct brw_instruction *inst, int gen);

  /* brw_vs.c */
-void brw_compute_vue_map(struct brw_vue_map *vue_map,
-                         const struct intel_context *intel,
-                         const struct brw_vs_prog_data *prog_data);
  gl_clip_plane *brw_select_clip_planes(struct gl_context *ctx);

  /* brw_wm.c */
diff --git a/src/mesa/drivers/dri/i965/brw_gs.c 
b/src/mesa/drivers/dri/i965/brw_gs.c
index c6132df..bfca169 100644
--- a/src/mesa/drivers/dri/i965/brw_gs.c
+++ b/src/mesa/drivers/dri/i965/brw_gs.c
@@ -56,7 +56,7 @@ static void compile_gs_prog( struct brw_context *brw,
     memset(&c, 0, sizeof(c));

     c.key = *key;
-   brw_compute_vue_map(&c.vue_map, intel, brw->vs.prog_data);
+   c.vue_map = brw->vs.prog_data->vue_map;
     c.nr_regs = (c.vue_map.num_slots + 1)/2;

     mem_ctx = NULL;
diff --git a/src/mesa/drivers/dri/i965/brw_sf.c 
b/src/mesa/drivers/dri/i965/brw_sf.c
index 6c28d77..6e63583 100644
--- a/src/mesa/drivers/dri/i965/brw_sf.c
+++ b/src/mesa/drivers/dri/i965/brw_sf.c
@@ -63,7 +63,7 @@ static void compile_sf_prog( struct brw_context *brw,
     brw_init_compile(brw,&c.func, mem_ctx);

     c.key = *key;
-   brw_compute_vue_map(&c.vue_map, intel, brw->vs.prog_data);
+   c.vue_map = brw->vs.prog_data->vue_map;
     c.urb_entry_read_offset = brw_sf_compute_urb_entry_read_offset(intel);
     c.nr_attr_regs = (c.vue_map.num_slots + 1)/2 - c.urb_entry_read_offset;
     c.nr_setup_regs = c.nr_attr_regs;
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp 
b/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
index 917c927..f9eed61 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
@@ -96,7 +96,7 @@ vec4_visitor::setup_attributes(int payload_reg)

     prog_data->urb_read_length = (nr_attributes + 1) / 2;

-   unsigned vue_entries = MAX2(nr_attributes, c->vue_map.num_slots);
+   unsigned vue_entries = MAX2(nr_attributes, c->prog_data.vue_map.num_slots);

     if (intel->gen == 6)
        c->prog_data.urb_entry_size = ALIGN(vue_entries, 8) / 8;
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp 
b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index 5dfe1c1..f9a08a0 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -2252,8 +2252,6 @@ vec4_visitor::emit_urb_writes()

     /* FINISHME: edgeflag */

-   brw_compute_vue_map(&c->vue_map, intel,&c->prog_data);
-
     /* First mrf is the g0-based message header containing URB handles and 
such,
      * which is implied in VS_OPCODE_URB_WRITE.
      */
@@ -2265,8 +2263,8 @@ vec4_visitor::emit_urb_writes()

     /* Set up the VUE data for the first URB write */
     int slot;
-   for (slot = 0; slot<  c->vue_map.num_slots; ++slot) {
-      emit_urb_slot(mrf++, c->vue_map.slot_to_vert_result[slot]);
+   for (slot = 0; slot<  c->prog_data.vue_map.num_slots; ++slot) {
+      emit_urb_slot(mrf++, c->prog_data.vue_map.slot_to_vert_result[slot]);

        /* If this was max_usable_mrf, we can't fit anything more into this URB
         * WRITE.
@@ -2281,16 +2279,16 @@ vec4_visitor::emit_urb_writes()
     vec4_instruction *inst = emit(VS_OPCODE_URB_WRITE);
     inst->base_mrf = base_mrf;
     inst->mlen = align_interleaved_urb_mlen(brw, mrf - base_mrf);
-   inst->eot = (slot>= c->vue_map.num_slots);
+   inst->eot = (slot>= c->prog_data.vue_map.num_slots);

     /* Optional second URB write */
     if (!inst->eot) {
        mrf = base_mrf + 1;

-      for (; slot<  c->vue_map.num_slots; ++slot) {
+      for (; slot<  c->prog_data.vue_map.num_slots; ++slot) {
         assert(mrf<  max_usable_mrf);

-         emit_urb_slot(mrf++, c->vue_map.slot_to_vert_result[slot]);
+         emit_urb_slot(mrf++, c->prog_data.vue_map.slot_to_vert_result[slot]);
        }

        current_annotation = "URB write";
diff --git a/src/mesa/drivers/dri/i965/brw_vs.c 
b/src/mesa/drivers/dri/i965/brw_vs.c
index be82177..ca205cd 100644
--- a/src/mesa/drivers/dri/i965/brw_vs.c
+++ b/src/mesa/drivers/dri/i965/brw_vs.c
@@ -57,13 +57,13 @@ static inline void assign_vue_slot(struct brw_vue_map 
*vue_map,
   * prog_data->userclip and prog_data->outputs_written in their key
   * (generated by CACHE_NEW_VS_PROG).
   */
-void
-brw_compute_vue_map(struct brw_vue_map *vue_map,
-                    const struct intel_context *intel,
-                   const struct brw_vs_prog_data *prog_data)
+static void
+brw_compute_vue_map(struct brw_vs_compile *c)
  {
-   bool userclip_active = prog_data->userclip;
-   GLbitfield64 outputs_written = prog_data->outputs_written;
+   struct brw_context *brw = c->func.brw;
+   const struct intel_context *intel =&brw->intel;
+   struct brw_vue_map *vue_map =&c->prog_data.vue_map;
+   GLbitfield64 outputs_written = c->prog_data.outputs_written;
     int i;

     vue_map->num_slots = 0;
@@ -118,7 +118,7 @@ brw_compute_vue_map(struct brw_vue_map *vue_map,
         */
        assign_vue_slot(vue_map, VERT_RESULT_PSIZ);
        assign_vue_slot(vue_map, VERT_RESULT_HPOS);
-      if (userclip_active) {
+      if (c->key.userclip_active) {
           assign_vue_slot(vue_map, VERT_RESULT_CLIP_DIST0);
           assign_vue_slot(vue_map, VERT_RESULT_CLIP_DIST1);
        }
@@ -218,6 +218,8 @@ do_vs_prog(struct brw_context *brw,
        c.prog_data.inputs_read |= VERT_BIT_EDGEFLAG;
     }

+   brw_compute_vue_map(&c);
+
     /* Put dummy slots into the VUE for the SF to put the replaced
      * point sprite coords in.  We shouldn't need these dummy slots,
      * which take up precious URB space, but it would mean that the SF
diff --git a/src/mesa/drivers/dri/i965/brw_vs.h 
b/src/mesa/drivers/dri/i965/brw_vs.h
index 8814251..490fcc0 100644
--- a/src/mesa/drivers/dri/i965/brw_vs.h
+++ b/src/mesa/drivers/dri/i965/brw_vs.h
@@ -92,7 +92,6 @@ struct brw_vs_compile {

     GLuint nr_inputs;

-   struct brw_vue_map vue_map;
     GLuint first_output;
     GLuint last_scratch;

diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c 
b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index 07fc0af..4bdd366 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -173,7 +173,6 @@ static inline bool can_use_direct_mrf(int vert_result,
   */
  static void brw_vs_alloc_regs( struct brw_vs_compile *c )
  {
-   struct brw_context *brw = c->func.brw;
     struct intel_context *intel =&c->func.brw->intel;
     GLuint i, reg = 0, slot;
     int attributes_in_vue;
@@ -326,13 +325,12 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c )

     /* Allocate outputs.  The non-position outputs go straight into message 
regs.
      */
-   brw_compute_vue_map(&c->vue_map, intel,&c->prog_data);
     c->first_output = reg;

     first_reladdr_output = get_first_reladdr_output(&c->vp->program);

-   for (slot = 0; slot<  c->vue_map.num_slots; slot++) {
-      int vert_result = c->vue_map.slot_to_vert_result[slot];
+   for (slot = 0; slot<  c->prog_data.vue_map.num_slots; slot++) {
+      int vert_result = c->prog_data.vue_map.slot_to_vert_result[slot];
        assert(vert_result<  Elements(c->regs[PROGRAM_OUTPUT]));
        if (can_use_direct_mrf(vert_result, first_reladdr_output, slot)) {
           c->regs[PROGRAM_OUTPUT][vert_result] = brw_message_reg(slot + 1);
@@ -405,7 +403,7 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c )
     /* The VS VUEs are shared by VF (outputting our inputs) and VS, so size
      * them to fit the biggest thing they need to.
      */
-   attributes_in_vue = MAX2(c->vue_map.num_slots, c->nr_inputs);
+   attributes_in_vue = MAX2(c->prog_data.vue_map.num_slots, c->nr_inputs);

     if (intel->gen == 6) {
        /* Each attribute is 32 bytes (2 vec4s), so dividing by 8 gives us the
@@ -1678,12 +1676,12 @@ static void emit_vertex_write( struct brw_vs_compile *c)
     }

     /* Move variable-addressed, non-overflow outputs to their MRFs. */
-   for (slot = len_vertex_header; slot<  c->vue_map.num_slots; ++slot) {
+   for (slot = len_vertex_header; slot<  c->prog_data.vue_map.num_slots; 
++slot) {
        if (slot>= MAX_SLOTS_IN_FIRST_URB_WRITE)
           break;

        int mrf = slot + 1;
-      int vert_result = c->vue_map.slot_to_vert_result[slot];
+      int vert_result = c->prog_data.vue_map.slot_to_vert_result[slot];
        if (c->regs[PROGRAM_OUTPUT][vert_result].file ==
            BRW_GENERAL_REGISTER_FILE) {
           brw_MOV(p, brw_message_reg(mrf),
@@ -1691,7 +1689,7 @@ static void emit_vertex_write( struct brw_vs_compile *c)
        }
     }

-   eot = (slot>= c->vue_map.num_slots);
+   eot = (slot>= c->prog_data.vue_map.num_slots);

     /* Message header, plus the (first part of the) VUE. */
     msg_len = 1 + slot;
@@ -1712,14 +1710,14 @@ static void emit_vertex_write( struct brw_vs_compile *c)
                 0,             /* urb destination offset */
                 BRW_URB_SWIZZLE_INTERLEAVE);

-   if (slot<  c->vue_map.num_slots) {
+   if (slot<  c->prog_data.vue_map.num_slots) {
        /* Not all of the vertex outputs/results fit into the MRF.
         * Move the overflowed attributes from the GRF to the MRF and
         * issue another brw_urb_WRITE().
         */
        GLuint mrf = 1;
-      for (; slot<  c->vue_map.num_slots; ++slot) {
-         int vert_result = c->vue_map.slot_to_vert_result[slot];
+      for (; slot<  c->prog_data.vue_map.num_slots; ++slot) {
+         int vert_result = c->prog_data.vue_map.slot_to_vert_result[slot];
           /* move from GRF to MRF */
           brw_MOV(p, brw_message_reg(mrf),
                   c->regs[PROGRAM_OUTPUT][vert_result]);
diff --git a/src/mesa/drivers/dri/i965/gen6_sf_state.c 
b/src/mesa/drivers/dri/i965/gen6_sf_state.c
index c4e7c4c..95ed1f7 100644
--- a/src/mesa/drivers/dri/i965/gen6_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_sf_state.c
@@ -112,7 +112,6 @@ upload_sf_state(struct brw_context *brw)
  {
     struct intel_context *intel =&brw->intel;
     struct gl_context *ctx =&intel->ctx;
-   struct brw_vue_map vue_map;
     uint32_t urb_entry_read_length;
     /* BRW_NEW_FRAGMENT_PROGRAM */
     uint32_t num_outputs = 
_mesa_bitcount_64(brw->fragment_program->Base.InputsRead);
@@ -129,8 +128,8 @@ upload_sf_state(struct brw_context *brw)
     uint32_t point_sprite_origin;

     /* CACHE_NEW_VS_PROG */
-   brw_compute_vue_map(&vue_map, intel, brw->vs.prog_data);
-   urb_entry_read_length = (vue_map.num_slots + 1)/2 - urb_entry_read_offset;
+   urb_entry_read_length = ((brw->vs.prog_data->vue_map.num_slots + 1) / 2 -
+                           urb_entry_read_offset);
     if (urb_entry_read_length == 0) {
        /* Setting the URB entry read length to 0 causes undefined behavior, so
         * if we have no URB data to read, set it to 1.
@@ -301,9 +300,10 @@ upload_sf_state(struct brw_context *brw)
         */
        assert(input_index<  16 || attr == input_index);

-      /* _NEW_LIGHT | _NEW_PROGRAM */
+      /* CACHE_NEW_VS_PROG | _NEW_LIGHT | _NEW_PROGRAM */
        attr_overrides[input_index++] =
-         get_attr_override(&vue_map, urb_entry_read_offset, attr,
+         get_attr_override(&brw->vs.prog_data->vue_map,
+                          urb_entry_read_offset, attr,
                             ctx->VertexProgram._TwoSideEnabled);
     }

diff --git a/src/mesa/drivers/dri/i965/gen7_sf_state.c 
b/src/mesa/drivers/dri/i965/gen7_sf_state.c
index 49460b2..aa77584 100644
--- a/src/mesa/drivers/dri/i965/gen7_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_sf_state.c
@@ -33,7 +33,6 @@ upload_sbe_state(struct brw_context *brw)
  {
     struct intel_context *intel =&brw->intel;
     struct gl_context *ctx =&intel->ctx;
-   struct brw_vue_map vue_map;
     uint32_t urb_entry_read_length;
     /* BRW_NEW_FRAGMENT_PROGRAM */
     uint32_t num_outputs = 
_mesa_bitcount_64(brw->fragment_program->Base.InputsRead);
@@ -49,8 +48,8 @@ upload_sbe_state(struct brw_context *brw)
     uint32_t point_sprite_origin;

     /* CACHE_NEW_VS_PROG */
-   brw_compute_vue_map(&vue_map, intel, brw->vs.prog_data);
-   urb_entry_read_length = (vue_map.num_slots + 1)/2 - urb_entry_read_offset;
+   urb_entry_read_length = ((brw->vs.prog_data->vue_map.num_slots + 1) / 2 -
+                           urb_entry_read_offset);
     if (urb_entry_read_length == 0) {
        /* Setting the URB entry read length to 0 causes undefined behavior, so
         * if we have no URB data to read, set it to 1.
@@ -114,9 +113,10 @@ upload_sbe_state(struct brw_context *brw)
         */
        assert(input_index<  16 || attr == input_index);

-      /* _NEW_LIGHT | _NEW_PROGRAM */
+      /* CACHE_NEW_VS | _NEW_LIGHT | _NEW_PROGRAM */

/* CACHE_NEW_VS_PROG | _NEW_LIGHT | _NEW_PROGRAM */

Reviewed-by: Kenneth Graunke <kenn...@whitecape.org>

        attr_overrides[input_index++] =
-         get_attr_override(&vue_map, urb_entry_read_offset, attr,
+         get_attr_override(&brw->vs.prog_data->vue_map,
+                          urb_entry_read_offset, attr,
                             ctx->VertexProgram._TwoSideEnabled);
     }

diff --git a/src/mesa/drivers/dri/i965/gen7_sol_state.c 
b/src/mesa/drivers/dri/i965/gen7_sol_state.c
index 134153e..1a89503 100644
--- a/src/mesa/drivers/dri/i965/gen7_sol_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_sol_state.c
@@ -239,14 +239,11 @@ upload_sol_state(struct brw_context *brw)
     struct gl_transform_feedback_object *xfb_obj =
        ctx->TransformFeedback.CurrentObject;
     bool active = xfb_obj->Active&&  !xfb_obj->Paused;
-   struct brw_vue_map vue_map;
-
-   /* CACHE_NEW_VS_PROG */
-   brw_compute_vue_map(&vue_map, intel, brw->vs.prog_data);

     if (active) {
        upload_3dstate_so_buffers(brw);
-      upload_3dstate_so_decl_list(brw,&vue_map);
+      /* CACHE_NEW_VS_PROG */
+      upload_3dstate_so_decl_list(brw,&brw->vs.prog_data->vue_map);

        intel->batch.needs_sol_reset = true;
     }
@@ -256,7 +253,7 @@ upload_sol_state(struct brw_context *brw)
      * MMIO register updates (current performed by the kernel at each batch
      * emit).
      */
-   upload_3dstate_streamout(brw, active,&vue_map);
+   upload_3dstate_streamout(brw, active,&brw->vs.prog_data->vue_map);
  }

  const struct brw_tracked_state gen7_sol_state = {

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