C++ (Cpp) setup_varying_inputs Examples

Example #1

File: brw_vec4_gs_visitor.cpp Project: linux4kix/mesa

void
vec4_gs_visitor::setup_payload()
{
   int attribute_map[BRW_VARYING_SLOT_COUNT * MAX_GS_INPUT_VERTICES];

   /* If a geometry shader tries to read from an input that wasn't written by
    * the vertex shader, that produces undefined results, but it shouldn't
    * crash anything.  So initialize attribute_map to zeros--that ensures that
    * these undefined results are read from r0.
    */
   memset(attribute_map, 0, sizeof(attribute_map));

   int reg = 0;

   /* The payload always contains important data in r0, which contains
    * the URB handles that are passed on to the URB write at the end
    * of the thread.
    */
   reg++;

   reg = setup_uniforms(reg);

   reg = setup_varying_inputs(reg, attribute_map);

   lower_attributes_to_hw_regs(attribute_map);

   this->first_non_payload_grf = reg;
}

Example #2

File: gen6_gs_visitor.cpp Project: ashmew2/kolibriosSVN

void
gen6_gs_visitor::setup_payload()
{
   int attribute_map[BRW_VARYING_SLOT_COUNT * MAX_GS_INPUT_VERTICES];

   /* Attributes are going to be interleaved, so one register contains two
    * attribute slots.
    */
   int attributes_per_reg = 2;

   /* If a geometry shader tries to read from an input that wasn't written by
    * the vertex shader, that produces undefined results, but it shouldn't
    * crash anything.  So initialize attribute_map to zeros--that ensures that
    * these undefined results are read from r0.
    */
   memset(attribute_map, 0, sizeof(attribute_map));

   int reg = 0;

   /* The payload always contains important data in r0. */
   reg++;

   /* r1 is always part of the payload and it holds information relevant
    * for transform feedback when we set the GEN6_GS_SVBI_PAYLOAD_ENABLE bit in
    * the 3DSTATE_GS packet. We will overwrite it with the PrimitiveID
    * information (and move the original value to a virtual register if
    * necessary).
    */
   if (c->prog_data.include_primitive_id)
      attribute_map[VARYING_SLOT_PRIMITIVE_ID] = attributes_per_reg * reg;
   reg++;

   reg = setup_uniforms(reg);

   reg = setup_varying_inputs(reg, attribute_map, attributes_per_reg);

   lower_attributes_to_hw_regs(attribute_map, true);

   this->first_non_payload_grf = reg;
}

Example #3

File: brw_vec4_gs_visitor.cpp Project: TechnoMancer/mesa

void
vec4_gs_visitor::setup_payload()
{
   int attribute_map[BRW_VARYING_SLOT_COUNT * MAX_GS_INPUT_VERTICES];

   /* If we are in dual instanced mode, then attributes are going to be
    * interleaved, so one register contains two attribute slots.
    */
   int attributes_per_reg = c->prog_data.dual_instanced_dispatch ? 2 : 1;

   /* If a geometry shader tries to read from an input that wasn't written by
    * the vertex shader, that produces undefined results, but it shouldn't
    * crash anything.  So initialize attribute_map to zeros--that ensures that
    * these undefined results are read from r0.
    */
   memset(attribute_map, 0, sizeof(attribute_map));

   int reg = 0;

   /* The payload always contains important data in r0, which contains
    * the URB handles that are passed on to the URB write at the end
    * of the thread.
    */
   reg++;

   /* If the shader uses gl_PrimitiveIDIn, that goes in r1. */
   if (c->prog_data.include_primitive_id)
      attribute_map[VARYING_SLOT_PRIMITIVE_ID] = attributes_per_reg * reg++;

   reg = setup_uniforms(reg);

   reg = setup_varying_inputs(reg, attribute_map, attributes_per_reg);

   lower_attributes_to_hw_regs(attribute_map,
                               c->prog_data.dual_instanced_dispatch);

   this->first_non_payload_grf = reg;
}