コード例 #1
0
ファイル: svga_tgsi_decl_sm30.c プロジェクト: notaz/mesa
/**
 * Declare a VS input register.
 * We still make up the input semantics the same as in 2.0
 */
static boolean
vs30_input(struct svga_shader_emitter *emit,
           struct tgsi_declaration_semantic semantic,
           unsigned idx)
{
   SVGA3DOpDclArgs dcl;
   SVGA3dShaderInstToken opcode;
   unsigned usage, index;

   opcode = inst_token( SVGA3DOP_DCL );
   dcl.values[0] = 0;
   dcl.values[1] = 0;

   emit->input_map[idx] = src_register( SVGA3DREG_INPUT, idx );
   dcl.dst = dst_register( SVGA3DREG_INPUT, idx );

   assert(dcl.dst.reserved0);

   svga_generate_vdecl_semantics( idx, &usage, &index );

   dcl.usage = usage;
   dcl.index = index;
   dcl.values[0] |= 1<<31;

   return (emit_instruction(emit, opcode) &&
           svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values)));
}
コード例 #2
0
/**
 * Declare a VS input register.
 * We still make up the input semantics the same as in 2.0
 */
static boolean
vs30_input(struct svga_shader_emitter *emit,
           struct tgsi_declaration_semantic semantic,
           unsigned idx)
{
   SVGA3DOpDclArgs dcl;
   SVGA3dShaderInstToken opcode;
   unsigned usage, index;

   opcode = inst_token( SVGA3DOP_DCL );
   dcl.values[0] = 0;
   dcl.values[1] = 0;

   if (emit->key.vkey.zero_stride_vertex_elements & (1 << idx)) {
      unsigned i;
      unsigned offset = 0;
      unsigned start_idx = emit->info.file_max[TGSI_FILE_CONSTANT] + 1;
      /* adjust for prescale constants */
      start_idx += emit->key.vkey.need_prescale ? 2 : 0;
      /* compute the offset from the start of zero stride constants */
      for (i = 0; i < PIPE_MAX_ATTRIBS && i < idx; ++i) {
         if (emit->key.vkey.zero_stride_vertex_elements & (1<<i))
            ++offset;
      }
      emit->input_map[idx] = src_register( SVGA3DREG_CONST,
                                           start_idx + offset );
   } else {
      emit->input_map[idx] = src_register( SVGA3DREG_INPUT, idx );
      dcl.dst = dst_register( SVGA3DREG_INPUT, idx );

      assert(dcl.dst.reserved0);

      svga_generate_vdecl_semantics( idx, &usage, &index );

      dcl.usage = usage;
      dcl.index = index;
      dcl.values[0] |= 1<<31;

      return (emit_instruction(emit, opcode) &&
              svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values)));
   }
   return TRUE;
}
コード例 #3
0
static int emit_hw_vs_vdecl( struct svga_context *svga,
                             unsigned dirty )
{
   const struct pipe_vertex_element *ve = svga->curr.ve;
   SVGA3dVertexDecl decl;
   unsigned i;

   assert(svga->curr.num_vertex_elements >=
          svga->curr.vs->base.info.file_count[TGSI_FILE_INPUT]);

   svga_hwtnl_reset_vdecl( svga->hwtnl, 
                           svga->curr.num_vertex_elements );

   for (i = 0; i < svga->curr.num_vertex_elements; i++) {
      const struct pipe_vertex_buffer *vb = &svga->curr.vb[ve[i].vertex_buffer_index];
      unsigned usage, index;


      svga_generate_vdecl_semantics( i, &usage, &index );

      /* SVGA_NEW_VELEMENT
       */
      decl.identity.type = svga->state.sw.ve_format[i];
      decl.identity.method = SVGA3D_DECLMETHOD_DEFAULT;
      decl.identity.usage = usage;
      decl.identity.usageIndex = index;
      decl.array.stride = vb->stride;
      decl.array.offset = (vb->buffer_offset +
                           ve[i].src_offset);

      svga_hwtnl_vdecl( svga->hwtnl,
                        i,
                        &decl,
                        vb->buffer );
   }

   return 0;
}
コード例 #4
0
ファイル: svga_state_vdecl.c プロジェクト: Distrotech/Mesa
static enum pipe_error
emit_hw_vs_vdecl(struct svga_context *svga, unsigned dirty)
{
   const struct pipe_vertex_element *ve = svga->curr.velems->velem;
   SVGA3dVertexDecl decls[SVGA3D_INPUTREG_MAX];
   unsigned buffer_indexes[SVGA3D_INPUTREG_MAX];
   unsigned i;
   unsigned neg_bias = 0;

   assert(svga->curr.velems->count >=
          svga->curr.vs->base.info.file_count[TGSI_FILE_INPUT]);

   /**
    * We can't set the VDECL offset to something negative, so we
    * must calculate a common negative additional index bias, and modify
    * the VDECL offsets accordingly so they *all* end up positive.
    *
    * Note that the exact value of the negative index bias is not that
    * important, since we compensate for it when we calculate the vertex
    * buffer offset below. The important thing is that all vertex buffer
    * offsets remain positive.
    *
    * Note that we use a negative bias variable in order to make the
    * rounding maths more easy to follow, and to avoid int / unsigned
    * confusion.
    */

   for (i = 0; i < svga->curr.velems->count; i++) {
      const struct pipe_vertex_buffer *vb =
         &svga->curr.vb[ve[i].vertex_buffer_index];
      struct svga_buffer *buffer;
      unsigned int offset = vb->buffer_offset + ve[i].src_offset;
      unsigned tmp_neg_bias = 0;

      if (!vb->buffer)
         continue;

      buffer = svga_buffer(vb->buffer);
      if (buffer->uploaded.start > offset) {
         tmp_neg_bias = buffer->uploaded.start - offset;
         if (vb->stride)
            tmp_neg_bias = (tmp_neg_bias + vb->stride - 1) / vb->stride;
         neg_bias = MAX2(neg_bias, tmp_neg_bias);
      }
   }

   for (i = 0; i < svga->curr.velems->count; i++) {
      const struct pipe_vertex_buffer *vb =
         &svga->curr.vb[ve[i].vertex_buffer_index];
      unsigned usage, index;
      struct svga_buffer *buffer;

      if (!vb->buffer)
         continue;

      buffer = svga_buffer(vb->buffer);
      svga_generate_vdecl_semantics( i, &usage, &index );

      /* SVGA_NEW_VELEMENT
       */
      decls[i].identity.type = svga->curr.velems->decl_type[i];
      decls[i].identity.method = SVGA3D_DECLMETHOD_DEFAULT;
      decls[i].identity.usage = usage;
      decls[i].identity.usageIndex = index;
      decls[i].array.stride = vb->stride;

      /* Compensate for partially uploaded vbo, and
       * for the negative index bias.
       */
      decls[i].array.offset = (vb->buffer_offset
                           + ve[i].src_offset
			   + neg_bias * vb->stride
			   - buffer->uploaded.start);

      assert(decls[i].array.offset >= 0);

      buffer_indexes[i] = ve[i].vertex_buffer_index;

      assert(!buffer->uploaded.buffer);
   }

   svga_hwtnl_vertex_decls(svga->hwtnl,
                           svga->curr.velems->count,
                           decls,
                           buffer_indexes,
                           svga->curr.velems->id);

   svga_hwtnl_vertex_buffers(svga->hwtnl,
                             svga->curr.num_vertex_buffers,
                             svga->curr.vb);

   svga_hwtnl_set_index_bias( svga->hwtnl, -(int) neg_bias );
   return PIPE_OK;
}