Exemplo n.º 1
0
/**
 * Compile the shader.
 */
static bool
gs_compile(struct gs_compile_context *gcc)
{
   struct toy_compiler *tc = &gcc->tc;
   struct ilo_shader *sh = gcc->shader;

   get_num_prims_static(gcc);

   if (gcc->is_static) {
      tc_head(tc);

      gs_init_vars(gcc);
      gs_ff_sync(gcc, tdst_d(gcc->vars.tmp), tsrc_imm_d(gcc->static_data.total_prims));
      gs_COPY1(tc, gcc->vars.urb_write_header, 0, tsrc_from(tdst_d(gcc->vars.tmp)), 0);
      if (gcc->write_so)
         gs_COPY4(tc, gcc->vars.so_index, 0, tsrc_from(tdst_d(gcc->vars.tmp)), 1);

      tc_tail(tc);
   }
   else {
      tc_fail(tc, "no control flow support");
      return false;
   }

   if (!gcc->write_vue)
      gs_discard(gcc);

   gs_lower_virtual_opcodes(gcc);
   toy_compiler_legalize_for_ra(tc);
   toy_compiler_optimize(tc);
   toy_compiler_allocate_registers(tc,
         gcc->first_free_grf,
         gcc->last_free_grf,
         1);
   toy_compiler_legalize_for_asm(tc);

   if (tc->fail) {
      ilo_err("failed to legalize GS instructions: %s\n", tc->reason);
      return false;
   }

   if (ilo_debug & ILO_DEBUG_GS) {
      ilo_printf("legalized instructions:\n");
      toy_compiler_dump(tc);
      ilo_printf("\n");
   }

   sh->kernel = toy_compiler_assemble(tc, &sh->kernel_size);
   if (!sh->kernel)
      return false;

   if (ilo_debug & ILO_DEBUG_GS) {
      ilo_printf("disassembly:\n");
      toy_compiler_disassemble(tc->dev, sh->kernel, sh->kernel_size, false);
      ilo_printf("\n");
   }

   return true;
}
Exemplo n.º 2
0
static void
gs_ff_sync(struct gs_compile_context *gcc, struct toy_dst dst,
           struct toy_src num_prims)
{
   struct toy_compiler *tc = &gcc->tc;
   struct toy_dst mrf_header =
      tdst_d(tdst(TOY_FILE_MRF, gcc->first_free_mrf, 0));
   struct toy_src desc;
   bool allocate;

   gs_COPY8(tc, mrf_header, gcc->payload.header);

   /* set NumSOVertsToWrite and NumSOPrimsNeeded */
   if (gcc->write_so) {
      if (num_prims.file == TOY_FILE_IMM) {
         const uint32_t v =
            (num_prims.val32 * gcc->in_vue_count) << 16 | num_prims.val32;

         gs_COPY1(tc, mrf_header, 0, tsrc_imm_d(v), 0);
      }
      else {
         struct toy_dst m0_0 = tdst_d(gcc->vars.tmp);

         tc_MUL(tc, m0_0, num_prims, tsrc_imm_d(gcc->in_vue_count << 16));
         tc_OR(tc, m0_0, tsrc_from(m0_0), num_prims);

         gs_COPY1(tc, mrf_header, 0, tsrc_from(m0_0), 0);
      }
   }

   /* set NumGSPrimsGenerated */
   if (gcc->write_vue)
      gs_COPY1(tc, mrf_header, 1, num_prims, 0);

   /*
    * From the Sandy Bridge PRM, volume 2 part 1, page 173:
    *
    *     "Programming Note: If the GS stage is enabled, software must always
    *      allocate at least one GS URB Entry. This is true even if the GS
    *      thread never needs to output vertices to the pipeline, e.g., when
    *      only performing stream output. This is an artifact of the need to
    *      pass the GS thread an initial destination URB handle."
    */
   allocate = true;
   desc = tsrc_imm_mdesc_urb(tc, false, 1, 1,
         false, false, allocate,
         false, 0, 1);

   tc_SEND(tc, dst, tsrc_from(mrf_header), desc, GEN6_SFID_URB);
}
Exemplo n.º 3
0
static void
vs_lower_opcode_tgsi_const_gen7(struct vs_compile_context *vcc,
                                struct toy_dst dst, int dim,
                                struct toy_src idx)
{
   struct toy_compiler *tc = &vcc->tc;
   const struct toy_dst offset =
      tdst_ud(tdst(TOY_FILE_MRF, vcc->first_free_mrf, 0));
   struct toy_src desc;

   if (vs_lower_opcode_tgsi_const_pcb(vcc, dst, dim, idx))
      return;

   /*
    * In 259b65e2e7938de4aab323033cfe2b33369ddb07, pull constant load was
    * changed from OWord Dual Block Read to ld to increase performance in the
    * classic driver.  Since we use the constant cache instead of the data
    * cache, I wonder if we still want to follow the classic driver.
    */

   /* set offset */
   tc_MOV(tc, offset, idx);

   desc = tsrc_imm_mdesc_sampler(tc, 1, 1, false,
         GEN6_MSG_SAMPLER_SIMD4X2,
         GEN6_MSG_SAMPLER_LD,
         0,
         vcc->shader->bt.const_base + dim);

   tc_SEND(tc, dst, tsrc_from(offset), desc, GEN6_SFID_SAMPLER);
}
Exemplo n.º 4
0
static void
vs_lower_opcode_tgsi_const_gen6(struct vs_compile_context *vcc,
                                struct toy_dst dst, int dim,
                                struct toy_src idx)
{
   const struct toy_dst header =
      tdst_ud(tdst(TOY_FILE_MRF, vcc->first_free_mrf, 0));
   const struct toy_dst block_offsets =
      tdst_ud(tdst(TOY_FILE_MRF, vcc->first_free_mrf + 1, 0));
   const struct toy_src r0 = tsrc_ud(tsrc(TOY_FILE_GRF, 0, 0));
   struct toy_compiler *tc = &vcc->tc;
   unsigned msg_type, msg_ctrl, msg_len;
   struct toy_inst *inst;
   struct toy_src desc;

   if (vs_lower_opcode_tgsi_const_pcb(vcc, dst, dim, idx))
      return;

   /* set message header */
   inst = tc_MOV(tc, header, r0);
   inst->mask_ctrl = GEN6_MASKCTRL_NOMASK;

   /* set block offsets */
   tc_MOV(tc, block_offsets, idx);

   msg_type = GEN6_MSG_DP_OWORD_DUAL_BLOCK_READ;
   msg_ctrl = GEN6_MSG_DP_OWORD_DUAL_BLOCK_SIZE_1;
   msg_len = 2;

   desc = tsrc_imm_mdesc_data_port(tc, false, msg_len, 1, true, false,
         msg_type, msg_ctrl, vcc->shader->bt.const_base + dim);

   tc_SEND(tc, dst, tsrc_from(header), desc, vcc->const_cache);
}
Exemplo n.º 5
0
static void
gs_write_so(struct gs_compile_context *gcc,
            struct toy_dst dst,
            struct toy_src index, struct toy_src out,
            bool send_write_commit_message,
            int binding_table_index)
{
   struct toy_compiler *tc = &gcc->tc;
   struct toy_dst mrf_header;
   struct toy_src desc;

   mrf_header = tdst_d(tdst(TOY_FILE_MRF, gcc->first_free_mrf, 0));

   /* m0.5: destination index */
   gs_COPY1(tc, mrf_header, 5, index, 0);

   /* m0.0 - m0.3: RGBA */
   gs_COPY4(tc, mrf_header, 0, tsrc_type(out, mrf_header.type), 0);

   desc = tsrc_imm_mdesc_data_port(tc, false,
         1, send_write_commit_message,
         true, send_write_commit_message,
         GEN6_MSG_DP_SVB_WRITE, 0,
         binding_table_index);

   tc_SEND(tc, dst, tsrc_from(mrf_header), desc,
         GEN6_SFID_DP_RC);
}
Exemplo n.º 6
0
static void
fs_lower_opcode_tgsi_const_gen6(struct fs_compile_context *fcc,
                                struct toy_dst dst, int dim, struct toy_src idx)
{
   const struct toy_dst header =
      tdst_ud(tdst(TOY_FILE_MRF, fcc->first_free_mrf, 0));
   const struct toy_dst global_offset =
      tdst_ud(tdst(TOY_FILE_MRF, fcc->first_free_mrf, 2 * 4));
   const struct toy_src r0 = tsrc_ud(tsrc(TOY_FILE_GRF, 0, 0));
   struct toy_compiler *tc = &fcc->tc;
   unsigned msg_type, msg_ctrl, msg_len;
   struct toy_inst *inst;
   struct toy_src desc;
   struct toy_dst tmp, real_dst[4];
   int i;

   /* set message header */
   inst = tc_MOV(tc, header, r0);
   inst->mask_ctrl = BRW_MASK_DISABLE;

   /* set global offset */
   inst = tc_MOV(tc, global_offset, idx);
   inst->mask_ctrl = BRW_MASK_DISABLE;
   inst->exec_size = BRW_EXECUTE_1;
   inst->src[0].rect = TOY_RECT_010;

   msg_type = BRW_DATAPORT_READ_MESSAGE_OWORD_BLOCK_READ;
   msg_ctrl = BRW_DATAPORT_OWORD_BLOCK_1_OWORDLOW << 8;
   msg_len = 1;

   desc = tsrc_imm_mdesc_data_port(tc, false, msg_len, 1, true, false,
         msg_type, msg_ctrl, ILO_WM_CONST_SURFACE(dim));

   tmp = tc_alloc_tmp(tc);

   tc_SEND(tc, tmp, tsrc_from(header), desc, fcc->const_cache);

   tdst_transpose(dst, real_dst);
   for (i = 0; i < 4; i++) {
      const struct toy_src src =
         tsrc_offset(tsrc_rect(tsrc_from(tmp), TOY_RECT_010), 0, i);

      /* cast to type D to make sure these are raw moves */
      tc_MOV(tc, tdst_d(real_dst[i]), tsrc_d(src));
   }
}
Exemplo n.º 7
0
static void
gs_write_vue(struct gs_compile_context *gcc,
             struct toy_dst dst, struct toy_src msg_header,
             const struct toy_src *outs, int num_outs,
             bool eot)
{
   struct toy_compiler *tc = &gcc->tc;
   struct toy_dst mrf_header;
   struct toy_src desc;
   int sent = 0;

   mrf_header = tdst_d(tdst(TOY_FILE_MRF, gcc->first_free_mrf, 0));
   gs_COPY8(tc, mrf_header, msg_header);

   while (sent < num_outs) {
      int mrf = gcc->first_free_mrf + 1;
      const int mrf_avail = gcc->last_free_mrf - mrf + 1;
      int msg_len, num_entries, i;
      bool complete;

      num_entries = (num_outs - sent + 1) / 2;
      complete = true;
      if (num_entries > mrf_avail) {
         num_entries = mrf_avail;
         complete = false;
      }

      for (i = 0; i < num_entries; i++) {
         gs_COPY4(tc, tdst(TOY_FILE_MRF, mrf + i / 2, 0), 0,
               outs[sent + 2 * i], 0);
         if (sent + i * 2 + 1 < gcc->shader->out.count) {
            gs_COPY4(tc, tdst(TOY_FILE_MRF, mrf + i / 2, 0), 4,
                  outs[sent + 2 * i + 1], 0);
         }
         mrf++;
      }

      /* do not forget the header */
      msg_len = num_entries + 1;

      if (complete) {
         desc = tsrc_imm_mdesc_urb(tc,
               eot, msg_len, !eot, true, true, !eot,
               false, sent, 0);
      }
      else {
         desc = tsrc_imm_mdesc_urb(tc,
               false, msg_len, 0, false, true, false,
               false, sent, 0);
      }

      tc_add2(tc, TOY_OPCODE_URB_WRITE,
            (complete) ? dst : tdst_null(), tsrc_from(mrf_header), desc);

      sent += num_entries * 2;
   }
}
Exemplo n.º 8
0
static void
gs_discard(struct gs_compile_context *gcc)
{
   struct toy_compiler *tc = &gcc->tc;
   struct toy_dst mrf_header;
   struct toy_src desc;

   mrf_header = tdst_d(tdst(TOY_FILE_MRF, gcc->first_free_mrf, 0));

   gs_COPY8(tc, mrf_header, tsrc_from(gcc->vars.urb_write_header));

   desc = tsrc_imm_mdesc_urb(tc,
         true, 1, 0, true, false, false,
         false, 0, 0);

   tc_add2(tc, TOY_OPCODE_URB_WRITE,
         tdst_null(), tsrc_from(mrf_header), desc);
}
Exemplo n.º 9
0
static void
fs_lower_opcode_tgsi_const_gen7(struct fs_compile_context *fcc,
                                struct toy_dst dst, int dim, struct toy_src idx)
{
   struct toy_compiler *tc = &fcc->tc;
   const struct toy_dst offset =
      tdst_ud(tdst(TOY_FILE_MRF, fcc->first_free_mrf, 0));
   struct toy_src desc;
   struct toy_inst *inst;
   struct toy_dst tmp, real_dst[4];
   int i;

   /*
    * In 4c1fdae0a01b3f92ec03b61aac1d3df500d51fc6, pull constant load was
    * changed from OWord Block Read to ld to increase performance in the
    * classic driver.  Since we use the constant cache instead of the data
    * cache, I wonder if we still want to follow the classic driver.
    */

   /* set offset */
   inst = tc_MOV(tc, offset, tsrc_rect(idx, TOY_RECT_010));
   inst->exec_size = BRW_EXECUTE_8;
   inst->mask_ctrl = BRW_MASK_DISABLE;

   desc = tsrc_imm_mdesc_sampler(tc, 1, 1, false,
         BRW_SAMPLER_SIMD_MODE_SIMD4X2,
         GEN5_SAMPLER_MESSAGE_SAMPLE_LD,
         0,
         ILO_WM_CONST_SURFACE(dim));

   tmp = tc_alloc_tmp(tc);
   inst = tc_SEND(tc, tmp, tsrc_from(offset), desc, BRW_SFID_SAMPLER);
   inst->exec_size = BRW_EXECUTE_8;
   inst->mask_ctrl = BRW_MASK_DISABLE;

   tdst_transpose(dst, real_dst);
   for (i = 0; i < 4; i++) {
      const struct toy_src src =
         tsrc_offset(tsrc_rect(tsrc_from(tmp), TOY_RECT_010), 0, i);

      /* cast to type D to make sure these are raw moves */
      tc_MOV(tc, tdst_d(real_dst[i]), tsrc_d(src));
   }
}
Exemplo n.º 10
0
static void
gs_lower_opcode_emit_vue_static(struct gs_compile_context *gcc)
{
   struct toy_compiler *tc = &gcc->tc;
   struct toy_inst *inst2;
   bool eot;

   eot = (gcc->static_data.num_vertices == gcc->static_data.total_vertices);

   gcc->vars.prim_end =
      ((gcc->static_data.last_vertex[(gcc->static_data.num_vertices - 1) / 32] &
        1 << ((gcc->static_data.num_vertices - 1) % 32)) != 0);

   if (eot && gcc->write_so) {
      inst2 = tc_OR(tc, tdst_offset(gcc->vars.urb_write_header, 0, 2),
            tsrc_from(gcc->vars.so_written),
            tsrc_imm_d(gcc->vars.prim_type << 2 |
                       gcc->vars.prim_start << 1 |
                       gcc->vars.prim_end));
      inst2->exec_size = GEN6_EXECSIZE_1;
      inst2->src[0] = tsrc_rect(inst2->src[0], TOY_RECT_010);
      inst2->src[1] = tsrc_rect(inst2->src[1], TOY_RECT_010);
   }
   else {
      gs_COPY1(tc, gcc->vars.urb_write_header, 2,
            tsrc_imm_d(gcc->vars.prim_type << 2 |
                       gcc->vars.prim_start << 1 |
                       gcc->vars.prim_end), 0);
   }

   gs_write_vue(gcc, tdst_d(gcc->vars.tmp),
         tsrc_from(gcc->vars.urb_write_header),
         gcc->vars.tgsi_outs,
         gcc->shader->out.count, eot);

   if (!eot) {
      gs_COPY1(tc, gcc->vars.urb_write_header, 0,
            tsrc_from(tdst_d(gcc->vars.tmp)), 0);
   }

   gcc->vars.prim_start = gcc->vars.prim_end;
   gcc->vars.prim_end = false;
}
Exemplo n.º 11
0
static void
gs_lower_opcode_emit_dynamic(struct gs_compile_context *gcc,
                             struct toy_inst *inst)
{
   struct toy_compiler *tc = &gcc->tc;

   tc_ADD(tc, gcc->dynamic_data.num_vertices,
         tsrc_from(gcc->dynamic_data.num_vertices), tsrc_imm_d(1));
   tc_ADD(tc, gcc->dynamic_data.num_vertices_in_prim,
         tsrc_from(gcc->dynamic_data.num_vertices_in_prim), tsrc_imm_d(1));

   if (gcc->write_so) {
      gs_lower_opcode_emit_so_dynamic(gcc);

      if (gcc->out_vue_min_count > 1)
         gs_save_output(gcc, gcc->vars.tgsi_outs);
   }

   if (gcc->write_vue)
      gs_lower_opcode_emit_vue_dynamic(gcc);
}
Exemplo n.º 12
0
static void
gs_lower_opcode_emit_so_dynamic(struct gs_compile_context *gcc)
{
   struct toy_compiler *tc = &gcc->tc;

   tc_IF(tc, tdst_null(),
         tsrc_from(gcc->dynamic_data.num_vertices_in_prim),
         tsrc_imm_d(gcc->out_vue_min_count),
         GEN6_COND_GE);

   {
      tc_ADD(tc, gcc->vars.tmp, tsrc_from(gcc->vars.so_index), tsrc_imm_d(0x03020100));

      /* TODO same as static version */
   }

   tc_ENDIF(tc);

   tc_ADD(tc, gcc->vars.so_index,
         tsrc_from(gcc->vars.so_index), tsrc_imm_d(gcc->out_vue_min_count));
}
Exemplo n.º 13
0
static void
vs_lower_opcode_tgsi_indirect(struct vs_compile_context *vcc,
                              struct toy_inst *inst)
{
   struct toy_compiler *tc = &vcc->tc;
   enum tgsi_file_type file;
   int dim, idx;
   struct toy_src indirect_dim, indirect_idx;

   assert(inst->src[0].file == TOY_FILE_IMM);
   file = inst->src[0].val32;

   assert(inst->src[1].file == TOY_FILE_IMM);
   dim = inst->src[1].val32;
   indirect_dim = inst->src[2];

   assert(inst->src[3].file == TOY_FILE_IMM);
   idx = inst->src[3].val32;
   indirect_idx = inst->src[4];

   /* no dimension indirection */
   assert(indirect_dim.file == TOY_FILE_IMM);
   dim += indirect_dim.val32;

   switch (inst->opcode) {
   case TOY_OPCODE_TGSI_INDIRECT_FETCH:
      if (file == TGSI_FILE_CONSTANT) {
         if (idx) {
            struct toy_dst tmp = tc_alloc_tmp(tc);

            tc_ADD(tc, tmp, indirect_idx, tsrc_imm_d(idx));
            indirect_idx = tsrc_from(tmp);
         }

         if (ilo_dev_gen(tc->dev) >= ILO_GEN(7))
            vs_lower_opcode_tgsi_const_gen7(vcc, inst->dst, dim, indirect_idx);
         else
            vs_lower_opcode_tgsi_const_gen6(vcc, inst->dst, dim, indirect_idx);
         break;
      }
      /* fall through */
   case TOY_OPCODE_TGSI_INDIRECT_STORE:
   default:
      tc_fail(tc, "unhandled TGSI indirection");
      break;
   }

   tc_discard_inst(tc, inst);
}
Exemplo n.º 14
0
static void
fs_lower_opcode_kil(struct toy_compiler *tc, struct toy_inst *inst)
{
   struct toy_dst pixel_mask_dst;
   struct toy_src f0, pixel_mask;
   struct toy_inst *tmp;

   /* lower half of r1.7:ud */
   pixel_mask_dst = tdst_uw(tdst(TOY_FILE_GRF, 1, 7 * 4));
   pixel_mask = tsrc_rect(tsrc_from(pixel_mask_dst), TOY_RECT_010);

   f0 = tsrc_rect(tsrc_uw(tsrc(TOY_FILE_ARF, BRW_ARF_FLAG, 0)), TOY_RECT_010);

   /* KILP or KIL */
   if (tsrc_is_null(inst->src[0])) {
      struct toy_src dummy = tsrc_uw(tsrc(TOY_FILE_GRF, 0, 0));
      struct toy_dst f0_dst = tdst_uw(tdst(TOY_FILE_ARF, BRW_ARF_FLAG, 0));

      /* create a mask that masks out all pixels */
      tmp = tc_MOV(tc, f0_dst, tsrc_rect(tsrc_imm_uw(0xffff), TOY_RECT_010));
      tmp->exec_size = BRW_EXECUTE_1;
      tmp->mask_ctrl = BRW_MASK_DISABLE;

      tc_CMP(tc, tdst_null(), dummy, dummy, BRW_CONDITIONAL_NEQ);

      /* swapping the two src operands breaks glBitmap()!? */
      tmp = tc_AND(tc, pixel_mask_dst, f0, pixel_mask);
      tmp->exec_size = BRW_EXECUTE_1;
      tmp->mask_ctrl = BRW_MASK_DISABLE;
   }
   else {
      struct toy_src src[4];
      int i;

      tsrc_transpose(inst->src[0], src);
      /* mask out killed pixels */
      for (i = 0; i < 4; i++) {
         tc_CMP(tc, tdst_null(), src[i], tsrc_imm_f(0.0f),
               BRW_CONDITIONAL_GE);

         /* swapping the two src operands breaks glBitmap()!? */
         tmp = tc_AND(tc, pixel_mask_dst, f0, pixel_mask);
         tmp->exec_size = BRW_EXECUTE_1;
         tmp->mask_ctrl = BRW_MASK_DISABLE;
      }
   }

   tc_discard_inst(tc, inst);
}
Exemplo n.º 15
0
static void
fetch_face(struct fs_compile_context *fcc, struct toy_dst dst)
{
   struct toy_compiler *tc = &fcc->tc;
   const struct toy_src r0 = tsrc_d(tsrc(TOY_FILE_GRF, 0, 0));
   struct toy_dst tmp_f, tmp;
   struct toy_dst real_dst[4];

   tdst_transpose(dst, real_dst);

   tmp_f = tc_alloc_tmp(tc);
   tmp = tdst_d(tmp_f);
   tc_SHR(tc, tmp, tsrc_rect(r0, TOY_RECT_010), tsrc_imm_d(15));
   tc_AND(tc, tmp, tsrc_from(tmp), tsrc_imm_d(1));
   tc_MOV(tc, tmp_f, tsrc_from(tmp));

   /* convert to 1.0 and -1.0 */
   tc_MUL(tc, tmp_f, tsrc_from(tmp_f), tsrc_imm_f(-2.0f));
   tc_ADD(tc, real_dst[0], tsrc_from(tmp_f), tsrc_imm_f(1.0f));

   tc_MOV(tc, real_dst[1], tsrc_imm_f(0.0f));
   tc_MOV(tc, real_dst[2], tsrc_imm_f(0.0f));
   tc_MOV(tc, real_dst[3], tsrc_imm_f(1.0f));
}
Exemplo n.º 16
0
static void
cs_dummy(struct cs_compile_context *ccc)
{
   struct toy_compiler *tc = &ccc->tc;
   struct toy_dst header;
   struct toy_src r0, desc;
   struct toy_inst *inst;

   header = tdst_ud(tdst(TOY_FILE_MRF, ccc->first_free_mrf, 0));
   r0 = tsrc_ud(tsrc(TOY_FILE_GRF, 0, 0));

   inst = tc_MOV(tc, header, r0);
   inst->exec_size = GEN6_EXECSIZE_8;
   inst->mask_ctrl = GEN6_MASKCTRL_NOMASK;

   desc = tsrc_imm_mdesc(tc, true, 1, 0, true,
         GEN6_MSG_TS_RESOURCE_SELECT_NO_DEREF |
         GEN6_MSG_TS_REQUESTER_TYPE_ROOT |
         GEN6_MSG_TS_OPCODE_DEREF);

   tc_SEND(tc, tdst_null(), tsrc_from(header), desc, GEN6_SFID_SPAWNER);
}
Exemplo n.º 17
0
/**
 * Set up message registers and return the message descriptor for sampling.
 */
static struct toy_src
fs_prepare_tgsi_sampling(struct toy_compiler *tc, const struct toy_inst *inst,
                         int base_mrf, const uint32_t *saturate_coords,
                         unsigned *ret_sampler_index)
{
   unsigned simd_mode, msg_type, msg_len, sampler_index, binding_table_index;
   struct toy_src coords[4], ddx[4], ddy[4], bias_or_lod, ref_or_si;
   int num_coords, ref_pos, num_derivs;
   int sampler_src, param_size, i;

   switch (inst->exec_size) {
   case BRW_EXECUTE_8:
      simd_mode = BRW_SAMPLER_SIMD_MODE_SIMD8;
      param_size = 1;
      break;
   case BRW_EXECUTE_16:
      simd_mode = BRW_SAMPLER_SIMD_MODE_SIMD16;
      param_size = 2;
      break;
   default:
      tc_fail(tc, "unsupported execute size for sampling");
      return tsrc_null();
      break;
   }

   num_coords = toy_tgsi_get_texture_coord_dim(inst->tex.target, &ref_pos);
   tsrc_transpose(inst->src[0], coords);
   bias_or_lod = tsrc_null();
   ref_or_si = tsrc_null();
   num_derivs = 0;
   sampler_src = 1;

   /*
    * For TXD,
    *
    *   src0 := (x, y, z, w)
    *   src1 := ddx
    *   src2 := ddy
    *   src3 := sampler
    *
    * For TEX2, TXB2, and TXL2,
    *
    *   src0 := (x, y, z, w)
    *   src1 := (v or bias or lod, ...)
    *   src2 := sampler
    *
    * For TEX, TXB, TXL, and TXP,
    *
    *   src0 := (x, y, z, w or bias or lod or projection)
    *   src1 := sampler
    *
    * For TXQ,
    *
    *   src0 := (lod, ...)
    *   src1 := sampler
    *
    * For TXQ_LZ,
    *
    *   src0 := sampler
    *
    * And for TXF,
    *
    *   src0 := (x, y, z, w or lod)
    *   src1 := sampler
    *
    * State trackers should not generate opcode+texture combinations with
    * which the two definitions conflict (e.g., TXB with SHADOW2DARRAY).
    */
   switch (inst->opcode) {
   case TOY_OPCODE_TGSI_TEX:
      if (ref_pos >= 0) {
         assert(ref_pos < 4);

         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE;
         ref_or_si = coords[ref_pos];
      }
      else {
         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE;
      }
      break;
   case TOY_OPCODE_TGSI_TXD:
      if (ref_pos >= 0)
         tc_fail(tc, "TXD with shadow sampler not supported");

      msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_DERIVS;
      tsrc_transpose(inst->src[1], ddx);
      tsrc_transpose(inst->src[2], ddy);
      num_derivs = num_coords;
      sampler_src = 3;
      break;
   case TOY_OPCODE_TGSI_TXP:
      if (ref_pos >= 0) {
         assert(ref_pos < 3);

         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE;
         ref_or_si = coords[ref_pos];
      }
      else {
         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE;
      }

      /* project the coordinates */
      {
         struct toy_dst tmp[4];

         tc_alloc_tmp4(tc, tmp);

         tc_INV(tc, tmp[3], coords[3]);
         for (i = 0; i < num_coords && i < 3; i++) {
            tc_MUL(tc, tmp[i], coords[i], tsrc_from(tmp[3]));
            coords[i] = tsrc_from(tmp[i]);
         }

         if (ref_pos >= i) {
            tc_MUL(tc, tmp[ref_pos], ref_or_si, tsrc_from(tmp[3]));
            ref_or_si = tsrc_from(tmp[ref_pos]);
         }
      }
      break;
   case TOY_OPCODE_TGSI_TXB:
      if (ref_pos >= 0) {
         assert(ref_pos < 3);

         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS_COMPARE;
         ref_or_si = coords[ref_pos];
      }
      else {
         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS;
      }

      bias_or_lod = coords[3];
      break;
   case TOY_OPCODE_TGSI_TXL:
      if (ref_pos >= 0) {
         assert(ref_pos < 3);

         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE;
         ref_or_si = coords[ref_pos];
      }
      else {
         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD;
      }

      bias_or_lod = coords[3];
      break;
   case TOY_OPCODE_TGSI_TXF:
      msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LD;

      switch (inst->tex.target) {
      case TGSI_TEXTURE_2D_MSAA:
      case TGSI_TEXTURE_2D_ARRAY_MSAA:
         assert(ref_pos >= 0 && ref_pos < 4);
         /* lod is always 0 */
         bias_or_lod = tsrc_imm_d(0);
         ref_or_si = coords[ref_pos];
         break;
      default:
         bias_or_lod = coords[3];
         break;
      }

      /* offset the coordinates */
      if (!tsrc_is_null(inst->tex.offsets[0])) {
         struct toy_dst tmp[4];
         struct toy_src offsets[4];

         tc_alloc_tmp4(tc, tmp);
         tsrc_transpose(inst->tex.offsets[0], offsets);

         for (i = 0; i < num_coords; i++) {
            tc_ADD(tc, tmp[i], coords[i], offsets[i]);
            coords[i] = tsrc_from(tmp[i]);
         }
      }

      sampler_src = 1;
      break;
   case TOY_OPCODE_TGSI_TXQ:
      msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO;
      num_coords = 0;
      bias_or_lod = coords[0];
      break;
   case TOY_OPCODE_TGSI_TXQ_LZ:
      msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO;
      num_coords = 0;
      sampler_src = 0;
      break;
   case TOY_OPCODE_TGSI_TEX2:
      if (ref_pos >= 0) {
         assert(ref_pos < 5);

         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE;

         if (ref_pos >= 4) {
            struct toy_src src1[4];
            tsrc_transpose(inst->src[1], src1);
            ref_or_si = src1[ref_pos - 4];
         }
         else {
            ref_or_si = coords[ref_pos];
         }
      }
      else {
         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE;
      }

      sampler_src = 2;
      break;
   case TOY_OPCODE_TGSI_TXB2:
      if (ref_pos >= 0) {
         assert(ref_pos < 4);

         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS_COMPARE;
         ref_or_si = coords[ref_pos];
      }
      else {
         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS;
      }

      {
         struct toy_src src1[4];
         tsrc_transpose(inst->src[1], src1);
         bias_or_lod = src1[0];
      }

      sampler_src = 2;
      break;
   case TOY_OPCODE_TGSI_TXL2:
      if (ref_pos >= 0) {
         assert(ref_pos < 4);

         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE;
         ref_or_si = coords[ref_pos];
      }
      else {
         msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD;
      }

      {
         struct toy_src src1[4];
         tsrc_transpose(inst->src[1], src1);
         bias_or_lod = src1[0];
      }

      sampler_src = 2;
      break;
   default:
      assert(!"unhandled sampling opcode");
      return tsrc_null();
      break;
   }

   assert(inst->src[sampler_src].file == TOY_FILE_IMM);
   sampler_index = inst->src[sampler_src].val32;
   binding_table_index = ILO_WM_TEXTURE_SURFACE(sampler_index);

   /*
    * From the Sandy Bridge PRM, volume 4 part 1, page 18:
    *
    *     "Note that the (cube map) coordinates delivered to the sampling
    *      engine must already have been divided by the component with the
    *      largest absolute value."
    */
   switch (inst->tex.target) {
   case TGSI_TEXTURE_CUBE:
   case TGSI_TEXTURE_SHADOWCUBE:
   case TGSI_TEXTURE_CUBE_ARRAY:
   case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
      /* TXQ does not need coordinates */
      if (num_coords >= 3) {
         struct toy_dst tmp[4];

         tc_alloc_tmp4(tc, tmp);

         tc_SEL(tc, tmp[3], tsrc_absolute(coords[0]),
               tsrc_absolute(coords[1]), BRW_CONDITIONAL_GE);
         tc_SEL(tc, tmp[3], tsrc_from(tmp[3]),
               tsrc_absolute(coords[2]), BRW_CONDITIONAL_GE);
         tc_INV(tc, tmp[3], tsrc_from(tmp[3]));

         for (i = 0; i < 3; i++) {
            tc_MUL(tc, tmp[i], coords[i], tsrc_from(tmp[3]));
            coords[i] = tsrc_from(tmp[i]);
         }
      }
      break;
   }

   /*
    * Saturate (s, t, r).  saturate_coords is set for sampler and coordinate
    * that uses linear filtering and PIPE_TEX_WRAP_CLAMP respectively.  It is
    * so that sampling outside the border gets the correct colors.
    */
   for (i = 0; i < MIN2(num_coords, 3); i++) {
      bool is_rect;

      if (!(saturate_coords[i] & (1 << sampler_index)))
         continue;

      switch (inst->tex.target) {
      case TGSI_TEXTURE_RECT:
      case TGSI_TEXTURE_SHADOWRECT:
         is_rect = true;
         break;
      default:
         is_rect = false;
         break;
      }

      if (is_rect) {
         struct toy_src min, max;
         struct toy_dst tmp;

         tc_fail(tc, "GL_CLAMP with rectangle texture unsupported");
         tmp = tc_alloc_tmp(tc);

         /* saturate to [0, width] or [0, height] */
         /* TODO TXQ? */
         min = tsrc_imm_f(0.0f);
         max = tsrc_imm_f(2048.0f);

         tc_SEL(tc, tmp, coords[i], min, BRW_CONDITIONAL_G);
         tc_SEL(tc, tmp, tsrc_from(tmp), max, BRW_CONDITIONAL_L);

         coords[i] = tsrc_from(tmp);
      }
      else {
         struct toy_dst tmp;
         struct toy_inst *inst2;

         tmp = tc_alloc_tmp(tc);

         /* saturate to [0.0f, 1.0f] */
         inst2 = tc_MOV(tc, tmp, coords[i]);
         inst2->saturate = true;

         coords[i] = tsrc_from(tmp);
      }
   }

   /* set up sampler parameters */
   if (tc->gen >= ILO_GEN(7)) {
      msg_len = fs_add_sampler_params_gen7(tc, msg_type, base_mrf, param_size,
            coords, num_coords, bias_or_lod, ref_or_si, ddx, ddy, num_derivs);
   }
   else {
      msg_len = fs_add_sampler_params_gen6(tc, msg_type, base_mrf, param_size,
            coords, num_coords, bias_or_lod, ref_or_si, ddx, ddy, num_derivs);
   }

   /*
    * From the Sandy Bridge PRM, volume 4 part 1, page 136:
    *
    *     "The maximum message length allowed to the sampler is 11. This would
    *      disallow sample_d, sample_b_c, and sample_l_c with a SIMD Mode of
    *      SIMD16."
    */
   if (msg_len > 11)
      tc_fail(tc, "maximum length for messages to the sampler is 11");

   if (ret_sampler_index)
      *ret_sampler_index = sampler_index;

   return tsrc_imm_mdesc_sampler(tc, msg_len, 4 * param_size,
         false, simd_mode, msg_type, sampler_index, binding_table_index);
}
Exemplo n.º 18
0
static void
fetch_position(struct fs_compile_context *fcc, struct toy_dst dst)
{
   struct toy_compiler *tc = &fcc->tc;
   const struct toy_src src_z =
      tsrc(TOY_FILE_GRF, fcc->payloads[0].source_depth, 0);
   const struct toy_src src_w =
      tsrc(TOY_FILE_GRF, fcc->payloads[0].source_w, 0);
   const int fb_height =
      (fcc->variant->u.fs.fb_height) ? fcc->variant->u.fs.fb_height : 1;
   const bool origin_upper_left =
      (fcc->tgsi.props.fs_coord_origin == TGSI_FS_COORD_ORIGIN_UPPER_LEFT);
   const bool pixel_center_integer =
      (fcc->tgsi.props.fs_coord_pixel_center ==
       TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
   struct toy_src subspan_x, subspan_y;
   struct toy_dst tmp, tmp_uw;
   struct toy_dst real_dst[4];

   tdst_transpose(dst, real_dst);

   subspan_x = tsrc_uw(tsrc(TOY_FILE_GRF, 1, 2 * 4));
   subspan_x = tsrc_rect(subspan_x, TOY_RECT_240);

   subspan_y = tsrc_offset(subspan_x, 0, 1);

   tmp_uw = tdst_uw(tc_alloc_tmp(tc));
   tmp = tc_alloc_tmp(tc);

   /* X */
   tc_ADD(tc, tmp_uw, subspan_x, tsrc_imm_v(0x10101010));
   tc_MOV(tc, tmp, tsrc_from(tmp_uw));
   if (pixel_center_integer)
      tc_MOV(tc, real_dst[0], tsrc_from(tmp));
   else
      tc_ADD(tc, real_dst[0], tsrc_from(tmp), tsrc_imm_f(0.5f));

   /* Y */
   tc_ADD(tc, tmp_uw, subspan_y, tsrc_imm_v(0x11001100));
   tc_MOV(tc, tmp, tsrc_from(tmp_uw));
   if (origin_upper_left && pixel_center_integer) {
      tc_MOV(tc, real_dst[1], tsrc_from(tmp));
   }
   else {
      struct toy_src y = tsrc_from(tmp);
      float offset = 0.0f;

      if (!pixel_center_integer)
         offset += 0.5f;

      if (!origin_upper_left) {
         offset += (float) (fb_height - 1);
         y = tsrc_negate(y);
      }

      tc_ADD(tc, real_dst[1], y, tsrc_imm_f(offset));
   }

   /* Z and W */
   tc_MOV(tc, real_dst[2], src_z);
   tc_INV(tc, real_dst[3], src_w);
}
Exemplo n.º 19
0
static void
fs_lower_opcode_tgsi_sampling(struct fs_compile_context *fcc,
                              struct toy_inst *inst)
{
   struct toy_compiler *tc = &fcc->tc;
   struct toy_dst dst[4], tmp[4];
   struct toy_src desc;
   unsigned sampler_index;
   int swizzles[4], i;
   bool need_filter;

   desc = fs_prepare_tgsi_sampling(tc, inst,
         fcc->first_free_mrf,
         fcc->variant->saturate_tex_coords,
         &sampler_index);

   switch (inst->opcode) {
   case TOY_OPCODE_TGSI_TXF:
   case TOY_OPCODE_TGSI_TXQ:
   case TOY_OPCODE_TGSI_TXQ_LZ:
      need_filter = false;
      break;
   default:
      need_filter = true;
      break;
   }

   toy_compiler_lower_to_send(tc, inst, false, BRW_SFID_SAMPLER);
   inst->src[0] = tsrc(TOY_FILE_MRF, fcc->first_free_mrf, 0);
   inst->src[1] = desc;
   for (i = 2; i < Elements(inst->src); i++)
      inst->src[i] = tsrc_null();

   /* write to temps first */
   tc_alloc_tmp4(tc, tmp);
   tdst_transpose(inst->dst, dst);
   inst->dst = tmp[0];

   tc_move_inst(tc, inst);

   if (need_filter) {
      assert(sampler_index < fcc->variant->num_sampler_views);
      swizzles[0] = fcc->variant->sampler_view_swizzles[sampler_index].r;
      swizzles[1] = fcc->variant->sampler_view_swizzles[sampler_index].g;
      swizzles[2] = fcc->variant->sampler_view_swizzles[sampler_index].b;
      swizzles[3] = fcc->variant->sampler_view_swizzles[sampler_index].a;
   }
   else {
      swizzles[0] = PIPE_SWIZZLE_RED;
      swizzles[1] = PIPE_SWIZZLE_GREEN;
      swizzles[2] = PIPE_SWIZZLE_BLUE;
      swizzles[3] = PIPE_SWIZZLE_ALPHA;
   }

   /* swizzle the results */
   for (i = 0; i < 4; i++) {
      switch (swizzles[i]) {
      case PIPE_SWIZZLE_ZERO:
         tc_MOV(tc, dst[i], tsrc_imm_f(0.0f));
         break;
      case PIPE_SWIZZLE_ONE:
         tc_MOV(tc, dst[i], tsrc_imm_f(1.0f));
         break;
      default:
         tc_MOV(tc, dst[i], tsrc_from(tmp[swizzles[i]]));
         break;
      }
   }
}
Exemplo n.º 20
0
/**
 * Emit instructions to write the VUE.
 */
static void
vs_write_vue(struct vs_compile_context *vcc)
{
   struct toy_compiler *tc = &vcc->tc;
   struct toy_src outs[PIPE_MAX_SHADER_OUTPUTS];
   struct toy_dst header;
   struct toy_src r0;
   struct toy_inst *inst;
   int sent_attrs, total_attrs;

   header = tdst_ud(tdst(TOY_FILE_MRF, vcc->first_free_mrf, 0));
   r0 = tsrc_ud(tsrc(TOY_FILE_GRF, 0, 0));
   inst = tc_MOV(tc, header, r0);
   inst->mask_ctrl = GEN6_MASKCTRL_NOMASK;

   if (ilo_dev_gen(tc->dev) >= ILO_GEN(7)) {
      inst = tc_OR(tc, tdst_offset(header, 0, 5),
            tsrc_rect(tsrc_offset(r0, 0, 5), TOY_RECT_010),
            tsrc_rect(tsrc_imm_ud(0xff00), TOY_RECT_010));
      inst->exec_size = GEN6_EXECSIZE_1;
      inst->access_mode = GEN6_ALIGN_1;
      inst->mask_ctrl = GEN6_MASKCTRL_NOMASK;
   }

   total_attrs = vs_collect_outputs(vcc, outs);
   sent_attrs = 0;
   while (sent_attrs < total_attrs) {
      struct toy_src desc;
      int mrf = vcc->first_free_mrf + 1, avail_mrf_for_attrs;
      int num_attrs, msg_len, i;
      bool eot;

      num_attrs = total_attrs - sent_attrs;
      eot = true;

      /* see if we need another message */
      avail_mrf_for_attrs = vcc->last_free_mrf - mrf + 1;
      if (num_attrs > avail_mrf_for_attrs) {
         /*
          * From the Sandy Bridge PRM, volume 4 part 2, page 22:
          *
          *     "Offset. This field specifies a destination offset (in 256-bit
          *      units) from the start of the URB entry(s), as referenced by
          *      URB Return Handle n, at which the data (if any) will be
          *      written."
          *
          * As we need to offset the following messages, we must make sure
          * this one writes an even number of attributes.
          */
         num_attrs = avail_mrf_for_attrs & ~1;
         eot = false;
      }

      if (ilo_dev_gen(tc->dev) >= ILO_GEN(7)) {
         /* do not forget about the header */
         msg_len = 1 + num_attrs;
      }
      else {
         /*
          * From the Sandy Bridge PRM, volume 4 part 2, page 26:
          *
          *     "At least 256 bits per vertex (512 bits total, M1 & M2) must
          *      be written.  Writing only 128 bits per vertex (256 bits
          *      total, M1 only) results in UNDEFINED operation."
          *
          *     "[DevSNB] Interleave writes must be in multiples of 256 per
          *      vertex."
          *
          * That is, we must write or appear to write an even number of
          * attributes, starting from two.
          */
         if (num_attrs % 2 && num_attrs == avail_mrf_for_attrs) {
            num_attrs--;
            eot = false;
         }

         msg_len = 1 + align(num_attrs, 2);
      }

      for (i = 0; i < num_attrs; i++)
         tc_MOV(tc, tdst(TOY_FILE_MRF, mrf++, 0), outs[sent_attrs + i]);

      assert(sent_attrs % 2 == 0);
      desc = tsrc_imm_mdesc_urb(tc, eot, msg_len, 0,
            eot, true, false, true, sent_attrs / 2, 0);

      tc_add2(tc, TOY_OPCODE_URB_WRITE, tdst_null(), tsrc_from(header), desc);

      sent_attrs += num_attrs;
   }
}
Exemplo n.º 21
0
static void
gs_lower_opcode_emit_so_static(struct gs_compile_context *gcc)
{
   struct toy_compiler *tc = &gcc->tc;
   struct toy_inst *inst;
   int i, j;

   if (gcc->static_data.num_vertices_in_prim < gcc->out_vue_min_count)
      return;

   inst = tc_MOV(tc, tdst_w(gcc->vars.tmp), tsrc_imm_v(0x03020100));
   inst->exec_size = GEN6_EXECSIZE_8;
   inst->mask_ctrl = GEN6_MASKCTRL_NOMASK;

   tc_ADD(tc, tdst_d(gcc->vars.tmp), tsrc_from(tdst_d(gcc->vars.tmp)),
         tsrc_rect(tsrc_from(gcc->vars.so_index), TOY_RECT_010));

   tc_IF(tc, tdst_null(),
         tsrc_rect(tsrc_offset(tsrc_from(tdst_d(gcc->vars.tmp)), 0, gcc->out_vue_min_count - 1), TOY_RECT_010),
         tsrc_rect(tsrc_offset(gcc->payload.svbi, 0, 4), TOY_RECT_010),
         GEN6_COND_LE);
   {
      for (i = 0; i < gcc->out_vue_min_count; i++) {
         for (j = 0; j < gcc->so_info->num_outputs; j++) {
            const int idx = gcc->so_info->output[j].register_index;
            struct toy_src index, out;
            int binding_table_index;
            bool write_commit;

            index = tsrc_d(tsrc_offset(tsrc_from(gcc->vars.tmp), 0, i));

            if (i == gcc->out_vue_min_count - 1) {
               out = gcc->vars.tgsi_outs[idx];
            }
            else {
               /* gcc->vars.buffer_cur also points to the first vertex */
               const int buf =
                  (gcc->vars.buffer_cur + i) % gcc->vars.buffer_needed;

               out = tsrc_offset(tsrc_from(gcc->vars.buffers[buf]), idx, 0);
            }

            out = tsrc_offset(out, 0, gcc->so_info->output[j].start_component);

            /*
             * From the Sandy Bridge PRM, volume 4 part 2, page 19:
             *
             *     "The Kernel must do a write commit on the last write to DAP
             *      prior to a URB_WRITE with End of Thread."
             */
            write_commit =
               (gcc->static_data.num_vertices == gcc->static_data.total_vertices &&
                i == gcc->out_vue_min_count - 1 &&
                j == gcc->so_info->num_outputs - 1);


            binding_table_index = gcc->shader->bt.gen6_so_base + j;

            gs_write_so(gcc, gcc->vars.tmp, index,
                  out, write_commit, binding_table_index);

            /*
             * From the Sandy Bridge PRM, volume 4 part 1, page 168:
             *
             *     "The write commit does not modify the destination register, but
             *      merely clears the dependency associated with the destination
             *      register. Thus, a simple "mov" instruction using the register as a
             *      source is sufficient to wait for the write commit to occur."
             */
            if (write_commit)
               tc_MOV(tc, gcc->vars.tmp, tsrc_from(gcc->vars.tmp));
         }
      }

      /* SONumPrimsWritten occupies the higher word of m0.2 of URB_WRITE */
      tc_ADD(tc, gcc->vars.so_written,
            tsrc_from(gcc->vars.so_written), tsrc_imm_d(1 << 16));
      tc_ADD(tc, gcc->vars.so_index,
            tsrc_from(gcc->vars.so_index), tsrc_imm_d(gcc->out_vue_min_count));
   }
   tc_ENDIF(tc);
}
Exemplo n.º 22
0
/**
 * Set up message registers and return the message descriptor for sampling.
 */
static struct toy_src
vs_prepare_tgsi_sampling(struct vs_compile_context *vcc,
                         const struct toy_inst *inst,
                         int base_mrf, unsigned *ret_sampler_index)
{
   struct toy_compiler *tc = &vcc->tc;
   unsigned simd_mode, msg_type, msg_len, sampler_index, binding_table_index;
   struct toy_src coords, ddx, ddy, bias_or_lod, ref_or_si;
   int num_coords, ref_pos, num_derivs;
   int sampler_src;

   simd_mode = GEN6_MSG_SAMPLER_SIMD4X2;

   coords = inst->src[0];
   ddx = tsrc_null();
   ddy = tsrc_null();
   bias_or_lod = tsrc_null();
   ref_or_si = tsrc_null();
   num_derivs = 0;
   sampler_src = 1;

   num_coords = tgsi_util_get_texture_coord_dim(inst->tex.target, &ref_pos);

   /* extract the parameters */
   switch (inst->opcode) {
   case TOY_OPCODE_TGSI_TXD:
      if (ref_pos >= 0) {
         assert(ref_pos < 4);

         msg_type = GEN7_MSG_SAMPLER_SAMPLE_D_C;
         ref_or_si = tsrc_swizzle1(coords, ref_pos);

         if (ilo_dev_gen(tc->dev) < ILO_GEN(7.5))
            tc_fail(tc, "TXD with shadow sampler not supported");
      }
      else {
         msg_type = GEN6_MSG_SAMPLER_SAMPLE_D;
      }

      ddx = inst->src[1];
      ddy = inst->src[2];
      num_derivs = num_coords;
      sampler_src = 3;
      break;
   case TOY_OPCODE_TGSI_TXL:
      if (ref_pos >= 0) {
         assert(ref_pos < 3);

         msg_type = GEN6_MSG_SAMPLER_SAMPLE_L_C;
         ref_or_si = tsrc_swizzle1(coords, ref_pos);
      }
      else {
         msg_type = GEN6_MSG_SAMPLER_SAMPLE_L;
      }

      bias_or_lod = tsrc_swizzle1(coords, TOY_SWIZZLE_W);
      break;
   case TOY_OPCODE_TGSI_TXF:
      msg_type = GEN6_MSG_SAMPLER_LD;

      switch (inst->tex.target) {
      case TGSI_TEXTURE_2D_MSAA:
      case TGSI_TEXTURE_2D_ARRAY_MSAA:
         assert(ref_pos >= 0 && ref_pos < 4);
         /* lod is always 0 */
         bias_or_lod = tsrc_imm_d(0);
         ref_or_si = tsrc_swizzle1(coords, ref_pos);
         break;
      default:
         bias_or_lod = tsrc_swizzle1(coords, TOY_SWIZZLE_W);
         break;
      }

      /* offset the coordinates */
      if (!tsrc_is_null(inst->tex.offsets[0])) {
         struct toy_dst tmp;

         tmp = tc_alloc_tmp(tc);
         tc_ADD(tc, tmp, coords, inst->tex.offsets[0]);
         coords = tsrc_from(tmp);
      }

      sampler_src = 1;
      break;
   case TOY_OPCODE_TGSI_TXQ:
      msg_type = GEN6_MSG_SAMPLER_RESINFO;
      num_coords = 0;
      bias_or_lod = tsrc_swizzle1(coords, TOY_SWIZZLE_X);
      break;
   case TOY_OPCODE_TGSI_TXQ_LZ:
      msg_type = GEN6_MSG_SAMPLER_RESINFO;
      num_coords = 0;
      sampler_src = 0;
      break;
   case TOY_OPCODE_TGSI_TXL2:
      if (ref_pos >= 0) {
         assert(ref_pos < 4);

         msg_type = GEN6_MSG_SAMPLER_SAMPLE_L_C;
         ref_or_si = tsrc_swizzle1(coords, ref_pos);
      }
      else {
         msg_type = GEN6_MSG_SAMPLER_SAMPLE_L;
      }

      bias_or_lod = tsrc_swizzle1(inst->src[1], TOY_SWIZZLE_X);
      sampler_src = 2;
      break;
   default:
      assert(!"unhandled sampling opcode");
      if (ret_sampler_index)
         *ret_sampler_index = 0;
      return tsrc_null();
      break;
   }

   assert(inst->src[sampler_src].file == TOY_FILE_IMM);
   sampler_index = inst->src[sampler_src].val32;
   binding_table_index = vcc->shader->bt.tex_base + sampler_index;

   /*
    * From the Sandy Bridge PRM, volume 4 part 1, page 18:
    *
    *     "Note that the (cube map) coordinates delivered to the sampling
    *      engine must already have been divided by the component with the
    *      largest absolute value."
    */
   switch (inst->tex.target) {
   case TGSI_TEXTURE_CUBE:
   case TGSI_TEXTURE_SHADOWCUBE:
   case TGSI_TEXTURE_CUBE_ARRAY:
   case TGSI_TEXTURE_SHADOWCUBE_ARRAY:
      /* TXQ does not need coordinates */
      if (num_coords >= 3) {
         struct toy_dst tmp, max;
         struct toy_src abs_coords[3];
         unsigned i;

         tmp = tc_alloc_tmp(tc);
         max = tdst_writemask(tmp, TOY_WRITEMASK_W);

         for (i = 0; i < 3; i++)
            abs_coords[i] = tsrc_absolute(tsrc_swizzle1(coords, i));

         tc_SEL(tc, max, abs_coords[0], abs_coords[0], GEN6_COND_GE);
         tc_SEL(tc, max, tsrc_from(max), abs_coords[0], GEN6_COND_GE);
         tc_INV(tc, max, tsrc_from(max));

         for (i = 0; i < 3; i++)
            tc_MUL(tc, tdst_writemask(tmp, 1 << i), coords, tsrc_from(max));

         coords = tsrc_from(tmp);
      }
      break;
   }

   /* set up sampler parameters */
   msg_len = vs_add_sampler_params(tc, msg_type, base_mrf,
         coords, num_coords, bias_or_lod, ref_or_si, ddx, ddy, num_derivs);

   /*
    * From the Sandy Bridge PRM, volume 4 part 1, page 136:
    *
    *     "The maximum message length allowed to the sampler is 11. This would
    *      disallow sample_d, sample_b_c, and sample_l_c with a SIMD Mode of
    *      SIMD16."
    */
   if (msg_len > 11)
      tc_fail(tc, "maximum length for messages to the sampler is 11");

   if (ret_sampler_index)
      *ret_sampler_index = sampler_index;

   return tsrc_imm_mdesc_sampler(tc, msg_len, 1,
         false, simd_mode, msg_type, sampler_index, binding_table_index);
}
Exemplo n.º 23
0
static void
gs_lower_opcode_tgsi_in(struct gs_compile_context *gcc,
                        struct toy_dst dst, int dim, int idx)
{
   struct toy_compiler *tc = &gcc->tc;
   struct toy_src attr;
   int slot, reg = -1, subreg;

   slot = toy_tgsi_find_input(&gcc->tgsi, idx);
   if (slot >= 0) {
      int i;

      for (i = 0; i < gcc->variant->u.gs.num_inputs; i++) {
         if (gcc->variant->u.gs.semantic_names[i] ==
               gcc->tgsi.inputs[slot].semantic_name &&
               gcc->variant->u.gs.semantic_indices[i] ==
               gcc->tgsi.inputs[slot].semantic_index) {
            reg = i / 2;
            subreg = (i % 2) * 4;
            break;
         }
      }
   }

   if (reg < 0) {
      tc_MOV(tc, dst, tsrc_imm_f(0.0f));
      return;
   }

   /* fix vertex ordering for GEN6_3DPRIM_TRISTRIP_REVERSE */
   if (gcc->in_vue_count == 3 && dim < 2) {
      struct toy_inst *inst;

      /* get PrimType */
      inst = tc_AND(tc, tdst_d(gcc->vars.tmp),
            tsrc_offset(gcc->payload.header, 0, 2), tsrc_imm_d(0x1f));
      inst->exec_size = GEN6_EXECSIZE_1;
      inst->src[0] = tsrc_rect(inst->src[0], TOY_RECT_010);
      inst->src[1] = tsrc_rect(inst->src[1], TOY_RECT_010);

      inst = tc_CMP(tc, tdst_null(), tsrc_from(tdst_d(gcc->vars.tmp)),
            tsrc_imm_d(GEN6_3DPRIM_TRISTRIP_REVERSE), GEN6_COND_NZ);
      inst->src[0] = tsrc_rect(inst->src[0], TOY_RECT_010);

      attr = tsrc_offset(gcc->payload.vues[dim], reg, subreg);
      inst = tc_MOV(tc, dst, attr);
      inst->pred_ctrl = GEN6_PREDCTRL_NORMAL;

      /* swap IN[0] and IN[1] for GEN6_3DPRIM_TRISTRIP_REVERSE */
      dim = !dim;

      attr = tsrc_offset(gcc->payload.vues[dim], reg, subreg);
      inst = tc_MOV(tc, dst, attr);
      inst->pred_ctrl = GEN6_PREDCTRL_NORMAL;
      inst->pred_inv = true;
   }
   else {
      attr = tsrc_offset(gcc->payload.vues[dim], reg, subreg);
      tc_MOV(tc, dst, attr);
   }


}
Exemplo n.º 24
0
static void
vs_lower_opcode_tgsi_sampling(struct vs_compile_context *vcc,
                              struct toy_inst *inst)
{
   struct toy_compiler *tc = &vcc->tc;
   struct toy_src desc;
   struct toy_dst dst, tmp;
   unsigned sampler_index;
   int swizzles[4], i;
   unsigned swizzle_zero_mask, swizzle_one_mask, swizzle_normal_mask;
   bool need_filter;

   desc = vs_prepare_tgsi_sampling(vcc, inst,
         vcc->first_free_mrf, &sampler_index);

   switch (inst->opcode) {
   case TOY_OPCODE_TGSI_TXF:
   case TOY_OPCODE_TGSI_TXQ:
   case TOY_OPCODE_TGSI_TXQ_LZ:
      need_filter = false;
      break;
   default:
      need_filter = true;
      break;
   }

   toy_compiler_lower_to_send(tc, inst, false, GEN6_SFID_SAMPLER);
   inst->src[0] = tsrc(TOY_FILE_MRF, vcc->first_free_mrf, 0);
   inst->src[1] = desc;

   /* write to a temp first */
   tmp = tc_alloc_tmp(tc);
   tmp.type = inst->dst.type;
   dst = inst->dst;
   inst->dst = tmp;

   tc_move_inst(tc, inst);

   if (need_filter) {
      assert(sampler_index < vcc->variant->num_sampler_views);
      swizzles[0] = vcc->variant->sampler_view_swizzles[sampler_index].r;
      swizzles[1] = vcc->variant->sampler_view_swizzles[sampler_index].g;
      swizzles[2] = vcc->variant->sampler_view_swizzles[sampler_index].b;
      swizzles[3] = vcc->variant->sampler_view_swizzles[sampler_index].a;
   }
   else {
      swizzles[0] = PIPE_SWIZZLE_RED;
      swizzles[1] = PIPE_SWIZZLE_GREEN;
      swizzles[2] = PIPE_SWIZZLE_BLUE;
      swizzles[3] = PIPE_SWIZZLE_ALPHA;
   }

   swizzle_zero_mask = 0;
   swizzle_one_mask = 0;
   swizzle_normal_mask = 0;
   for (i = 0; i < 4; i++) {
      switch (swizzles[i]) {
      case PIPE_SWIZZLE_ZERO:
         swizzle_zero_mask |= 1 << i;
         swizzles[i] = i;
         break;
      case PIPE_SWIZZLE_ONE:
         swizzle_one_mask |= 1 << i;
         swizzles[i] = i;
         break;
      default:
         swizzle_normal_mask |= 1 << i;
         break;
      }
   }

   /* swizzle the results */
   if (swizzle_normal_mask) {
      tc_MOV(tc, tdst_writemask(dst, swizzle_normal_mask),
            tsrc_swizzle(tsrc_from(tmp), swizzles[0],
               swizzles[1], swizzles[2], swizzles[3]));
   }
   if (swizzle_zero_mask)
      tc_MOV(tc, tdst_writemask(dst, swizzle_zero_mask), tsrc_imm_f(0.0f));
   if (swizzle_one_mask)
      tc_MOV(tc, tdst_writemask(dst, swizzle_one_mask), tsrc_imm_f(1.0f));
}
Exemplo n.º 25
0
static bool
gs_compile_passthrough(struct gs_compile_context *gcc)
{
   struct toy_compiler *tc = &gcc->tc;
   struct ilo_shader *sh = gcc->shader;

   gcc->is_static = true;
   gcc->static_data.total_vertices = gcc->in_vue_count;
   gcc->static_data.total_prims = 1;
   gcc->static_data.last_vertex[0] = 1 << (gcc->in_vue_count - 1);

   gs_init_vars(gcc);
   gs_ff_sync(gcc, tdst_d(gcc->vars.tmp), tsrc_imm_d(gcc->static_data.total_prims));
   gs_COPY1(tc, gcc->vars.urb_write_header, 0, tsrc_from(tdst_d(gcc->vars.tmp)), 0);
   if (gcc->write_so)
      gs_COPY4(tc, gcc->vars.so_index, 0, tsrc_from(tdst_d(gcc->vars.tmp)), 1);

   {
      int vert, attr;

      for (vert = 0; vert < gcc->out_vue_min_count; vert++) {
         for (attr = 0; attr < gcc->shader->out.count; attr++) {
            tc_MOV(tc, tdst_from(gcc->vars.tgsi_outs[attr]),
                  tsrc_offset(gcc->payload.vues[vert], attr / 2, (attr % 2) * 4));
         }

         gs_lower_opcode_emit(gcc, NULL);
      }

      gs_lower_opcode_endprim(gcc, NULL);
   }

   if (!gcc->write_vue)
      gs_discard(gcc);

   gs_lower_virtual_opcodes(gcc);

   toy_compiler_legalize_for_ra(tc);
   toy_compiler_optimize(tc);
   toy_compiler_allocate_registers(tc,
         gcc->first_free_grf,
         gcc->last_free_grf,
         1);

   toy_compiler_legalize_for_asm(tc);

   if (tc->fail) {
      ilo_err("failed to translate GS TGSI tokens: %s\n", tc->reason);
      return false;
   }

   if (ilo_debug & ILO_DEBUG_GS) {
      int i;

      ilo_printf("VUE count %d, VUE size %d\n",
            gcc->in_vue_count, gcc->in_vue_size);
      ilo_printf("%srasterizer discard\n",
            (gcc->variant->u.gs.rasterizer_discard) ? "" : "no ");

      for (i = 0; i < gcc->so_info->num_outputs; i++) {
         ilo_printf("SO[%d] = OUT[%d]\n", i,
               gcc->so_info->output[i].register_index);
      }

      ilo_printf("legalized instructions:\n");
      toy_compiler_dump(tc);
      ilo_printf("\n");
   }

   sh->kernel = toy_compiler_assemble(tc, &sh->kernel_size);
   if (!sh->kernel) {
      ilo_err("failed to compile GS: %s\n", tc->reason);
      return false;
   }

   if (ilo_debug & ILO_DEBUG_GS) {
      ilo_printf("disassembly:\n");
      toy_compiler_disassemble(tc->dev, sh->kernel, sh->kernel_size, false);
      ilo_printf("\n");
   }

   return true;
}
Exemplo n.º 26
0
/**
 * Collect the toy registers to be written to the VUE.
 */
static int
vs_collect_outputs(struct vs_compile_context *vcc, struct toy_src *outs)
{
   const struct toy_tgsi *tgsi = &vcc->tgsi;
   unsigned i;

   for (i = 0; i < vcc->shader->out.count; i++) {
      const int slot = vcc->output_map[i];
      const int vrf = (slot >= 0) ? toy_tgsi_get_vrf(tgsi,
            TGSI_FILE_OUTPUT, 0, tgsi->outputs[slot].index) : -1;
      struct toy_src src;

      if (vrf >= 0) {
         struct toy_dst dst;

         dst = tdst(TOY_FILE_VRF, vrf, 0);
         src = tsrc_from(dst);

         if (i == 0) {
            /* PSIZE is at channel W */
            tc_MOV(&vcc->tc, tdst_writemask(dst, TOY_WRITEMASK_W),
                  tsrc_swizzle1(src, TOY_SWIZZLE_X));

            /* the other channels are for the header */
            dst = tdst_d(dst);
            tc_MOV(&vcc->tc, tdst_writemask(dst, TOY_WRITEMASK_XYZ),
                  tsrc_imm_d(0));
         }
         else {
            /* initialize unused channels to 0.0f */
            if (tgsi->outputs[slot].undefined_mask) {
               dst = tdst_writemask(dst, tgsi->outputs[slot].undefined_mask);
               tc_MOV(&vcc->tc, dst, tsrc_imm_f(0.0f));
            }
         }
      }
      else {
         /* XXX this is too ugly */
         if (vcc->shader->out.semantic_names[i] == TGSI_SEMANTIC_CLIPDIST &&
             slot < 0) {
            /* ok, we need to compute clip distance */
            int clipvert_slot = -1, clipvert_vrf, j;

            for (j = 0; j < tgsi->num_outputs; j++) {
               if (tgsi->outputs[j].semantic_name ==
                     TGSI_SEMANTIC_CLIPVERTEX) {
                  clipvert_slot = j;
                  break;
               }
               else if (tgsi->outputs[j].semantic_name ==
                     TGSI_SEMANTIC_POSITION) {
                  /* remember pos, but keep looking */
                  clipvert_slot = j;
               }
            }

            clipvert_vrf = (clipvert_slot >= 0) ? toy_tgsi_get_vrf(tgsi,
                  TGSI_FILE_OUTPUT, 0, tgsi->outputs[clipvert_slot].index) : -1;
            if (clipvert_vrf >= 0) {
               struct toy_dst tmp = tc_alloc_tmp(&vcc->tc);
               struct toy_src clipvert = tsrc(TOY_FILE_VRF, clipvert_vrf, 0);
               int first_ucp, last_ucp;

               if (vcc->shader->out.semantic_indices[i]) {
                  first_ucp = 4;
                  last_ucp = MIN2(7, vcc->variant->u.vs.num_ucps - 1);
               }
               else {
                  first_ucp = 0;
                  last_ucp = MIN2(3, vcc->variant->u.vs.num_ucps - 1);
               }

               for (j = first_ucp; j <= last_ucp; j++) {
                  const int plane_grf = vcc->first_ucp_grf + j / 2;
                  const int plane_subreg = (j & 1) * 16;
                  const struct toy_src plane = tsrc_rect(tsrc(TOY_FILE_GRF,
                           plane_grf, plane_subreg), TOY_RECT_041);
                  const unsigned writemask = 1 << ((j >= 4) ? j - 4 : j);

                  tc_DP4(&vcc->tc, tdst_writemask(tmp, writemask),
                        clipvert, plane);
               }

               src = tsrc_from(tmp);
            }
            else {
               src = tsrc_imm_f(0.0f);
            }
         }
         else {
            src = (i == 0) ? tsrc_imm_d(0) : tsrc_imm_f(0.0f);
         }
      }

      outs[i] = src;
   }

   return i;
}