Ejemplo n.º 1
0
void *
util_make_geometry_passthrough_shader(struct pipe_context *pipe,
                                      uint num_attribs,
                                      const ubyte *semantic_names,
                                      const ubyte *semantic_indexes)
{
   static const unsigned zero[4] = {0, 0, 0, 0};

   struct ureg_program *ureg;
   struct ureg_dst dst[PIPE_MAX_SHADER_OUTPUTS];
   struct ureg_src src[PIPE_MAX_SHADER_INPUTS];
   struct ureg_src imm;

   unsigned i;

   ureg = ureg_create(PIPE_SHADER_GEOMETRY);
   if (!ureg)
      return NULL;

   ureg_property(ureg, TGSI_PROPERTY_GS_INPUT_PRIM, PIPE_PRIM_POINTS);
   ureg_property(ureg, TGSI_PROPERTY_GS_OUTPUT_PRIM, PIPE_PRIM_POINTS);
   ureg_property(ureg, TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES, 1);
   ureg_property(ureg, TGSI_PROPERTY_GS_INVOCATIONS, 1);
   imm = ureg_DECL_immediate_uint(ureg, zero, 4);

   /**
    * Loop over all the attribs and declare the corresponding
    * declarations in the geometry shader
    */
   for (i = 0; i < num_attribs; i++) {
      src[i] = ureg_DECL_input(ureg, semantic_names[i],
                               semantic_indexes[i], 0, 1);
      src[i] = ureg_src_dimension(src[i], 0);
      dst[i] = ureg_DECL_output(ureg, semantic_names[i], semantic_indexes[i]);
   }

   /* MOV dst[i] src[i] */
   for (i = 0; i < num_attribs; i++) {
      ureg_MOV(ureg, dst[i], src[i]);
   }

   /* EMIT IMM[0] */
   ureg_insn(ureg, TGSI_OPCODE_EMIT, NULL, 0, &imm, 1, 0);

   /* END */
   ureg_END(ureg);

   return ureg_create_shader_and_destroy(ureg, pipe);
}
Ejemplo n.º 2
0
void *
st_pbo_create_gs(struct st_context *st)
{
   static const int zero = 0;
   struct ureg_program *ureg;
   struct ureg_dst out_pos;
   struct ureg_dst out_layer;
   struct ureg_src in_pos;
   struct ureg_src imm;
   unsigned i;

   ureg = ureg_create(PIPE_SHADER_GEOMETRY);
   if (!ureg)
      return NULL;

   ureg_property(ureg, TGSI_PROPERTY_GS_INPUT_PRIM, PIPE_PRIM_TRIANGLES);
   ureg_property(ureg, TGSI_PROPERTY_GS_OUTPUT_PRIM, PIPE_PRIM_TRIANGLE_STRIP);
   ureg_property(ureg, TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES, 3);

   out_pos = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0);
   out_layer = ureg_DECL_output(ureg, TGSI_SEMANTIC_LAYER, 0);

   in_pos = ureg_DECL_input(ureg, TGSI_SEMANTIC_POSITION, 0, 0, 1);

   imm = ureg_DECL_immediate_int(ureg, &zero, 1);

   for (i = 0; i < 3; ++i) {
      struct ureg_src in_pos_vertex = ureg_src_dimension(in_pos, i);

      /* out_pos = in_pos[i] */
      ureg_MOV(ureg, out_pos, in_pos_vertex);

      /* out_layer.x = f2i(in_pos[i].z) */
      ureg_F2I(ureg, ureg_writemask(out_layer, TGSI_WRITEMASK_X),
                     ureg_scalar(in_pos_vertex, TGSI_SWIZZLE_Z));

      ureg_EMIT(ureg, ureg_scalar(imm, TGSI_SWIZZLE_X));
   }

   ureg_END(ureg);

   return ureg_create_shader_and_destroy(ureg, st->pipe);
}
Ejemplo n.º 3
0
/**
 * Translate Mesa program to TGSI format.
 * \param program  the program to translate
 * \param numInputs  number of input registers used
 * \param inputMapping  maps Mesa fragment program inputs to TGSI generic
 *                      input indexes
 * \param inputSemanticName  the TGSI_SEMANTIC flag for each input
 * \param inputSemanticIndex  the semantic index (ex: which texcoord) for
 *                            each input
 * \param interpMode  the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
 * \param numOutputs  number of output registers used
 * \param outputMapping  maps Mesa fragment program outputs to TGSI
 *                       generic outputs
 * \param outputSemanticName  the TGSI_SEMANTIC flag for each output
 * \param outputSemanticIndex  the semantic index (ex: which texcoord) for
 *                             each output
 *
 * \return  PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY
 */
enum pipe_error
st_translate_mesa_program(
   struct gl_context *ctx,
   uint procType,
   struct ureg_program *ureg,
   const struct gl_program *program,
   GLuint numInputs,
   const GLuint inputMapping[],
   const ubyte inputSemanticName[],
   const ubyte inputSemanticIndex[],
   const GLuint interpMode[],
   GLuint numOutputs,
   const GLuint outputMapping[],
   const ubyte outputSemanticName[],
   const ubyte outputSemanticIndex[],
   boolean passthrough_edgeflags,
   boolean clamp_color)
{
   struct st_translate translate, *t;
   unsigned i;
   enum pipe_error ret = PIPE_OK;

   assert(numInputs <= ARRAY_SIZE(t->inputs));
   assert(numOutputs <= ARRAY_SIZE(t->outputs));

   t = &translate;
   memset(t, 0, sizeof *t);

   t->procType = procType;
   t->inputMapping = inputMapping;
   t->outputMapping = outputMapping;
   t->ureg = ureg;

   /*_mesa_print_program(program);*/

   /*
    * Declare input attributes.
    */
   if (procType == TGSI_PROCESSOR_FRAGMENT) {
      for (i = 0; i < numInputs; i++) {
         t->inputs[i] = ureg_DECL_fs_input(ureg,
                                           inputSemanticName[i],
                                           inputSemanticIndex[i],
                                           interpMode[i]);
      }

      if (program->InputsRead & VARYING_BIT_POS) {
         /* Must do this after setting up t->inputs, and before
          * emitting constant references, below:
          */
         emit_wpos(st_context(ctx), t, program, ureg);
      }

      if (program->InputsRead & VARYING_BIT_FACE) {
         emit_face_var( t, program );
      }

      /*
       * Declare output attributes.
       */
      for (i = 0; i < numOutputs; i++) {
         switch (outputSemanticName[i]) {
         case TGSI_SEMANTIC_POSITION:
            t->outputs[i] = ureg_DECL_output( ureg,
                                              TGSI_SEMANTIC_POSITION, /* Z / Depth */
                                              outputSemanticIndex[i] );

            t->outputs[i] = ureg_writemask( t->outputs[i],
                                            TGSI_WRITEMASK_Z );
            break;
         case TGSI_SEMANTIC_STENCIL:
            t->outputs[i] = ureg_DECL_output( ureg,
                                              TGSI_SEMANTIC_STENCIL, /* Stencil */
                                              outputSemanticIndex[i] );
            t->outputs[i] = ureg_writemask( t->outputs[i],
                                            TGSI_WRITEMASK_Y );
            break;
         case TGSI_SEMANTIC_COLOR:
            t->outputs[i] = ureg_DECL_output( ureg,
                                              TGSI_SEMANTIC_COLOR,
                                              outputSemanticIndex[i] );
            break;
         default:
            debug_assert(0);
            return 0;
         }
      }
   }
   else if (procType == TGSI_PROCESSOR_GEOMETRY) {
      for (i = 0; i < numInputs; i++) {
         t->inputs[i] = ureg_DECL_input(ureg,
                                        inputSemanticName[i],
                                        inputSemanticIndex[i], 0, 1);
      }

      for (i = 0; i < numOutputs; i++) {
         t->outputs[i] = ureg_DECL_output( ureg,
                                           outputSemanticName[i],
                                           outputSemanticIndex[i] );
      }
   }
   else {
      assert(procType == TGSI_PROCESSOR_VERTEX);

      for (i = 0; i < numInputs; i++) {
         t->inputs[i] = ureg_DECL_vs_input(ureg, i);
      }

      for (i = 0; i < numOutputs; i++) {
         t->outputs[i] = ureg_DECL_output( ureg,
                                           outputSemanticName[i],
                                           outputSemanticIndex[i] );
         if (outputSemanticName[i] == TGSI_SEMANTIC_FOG) {
            /* force register to contain a fog coordinate in the form (F, 0, 0, 1). */
            ureg_MOV(ureg,
                     ureg_writemask(t->outputs[i], TGSI_WRITEMASK_YZW),
                     ureg_imm4f(ureg, 0.0f, 0.0f, 0.0f, 1.0f));
            t->outputs[i] = ureg_writemask(t->outputs[i], TGSI_WRITEMASK_X);
	 }
      }
      if (passthrough_edgeflags)
         emit_edgeflags( t, program );
   }

   /* Declare address register.
    */
   if (program->NumAddressRegs > 0) {
      debug_assert( program->NumAddressRegs == 1 );
      t->address[0] = ureg_DECL_address( ureg );
   }

   /* Declare misc input registers
    */
   {
      GLbitfield sysInputs = program->SystemValuesRead;
      unsigned numSys = 0;
      for (i = 0; sysInputs; i++) {
         if (sysInputs & (1 << i)) {
            unsigned semName = _mesa_sysval_to_semantic[i];
            t->systemValues[i] = ureg_DECL_system_value(ureg, numSys, semName, 0);
            if (semName == TGSI_SEMANTIC_INSTANCEID ||
                semName == TGSI_SEMANTIC_VERTEXID) {
               /* From Gallium perspective, these system values are always
                * integer, and require native integer support.  However, if
                * native integer is supported on the vertex stage but not the
                * pixel stage (e.g, i915g + draw), Mesa will generate IR that
                * assumes these system values are floats. To resolve the
                * inconsistency, we insert a U2F.
                */
               struct st_context *st = st_context(ctx);
               struct pipe_screen *pscreen = st->pipe->screen;
               assert(procType == TGSI_PROCESSOR_VERTEX);
               assert(pscreen->get_shader_param(pscreen, PIPE_SHADER_VERTEX, PIPE_SHADER_CAP_INTEGERS));
               (void) pscreen;  /* silence non-debug build warnings */
               if (!ctx->Const.NativeIntegers) {
                  struct ureg_dst temp = ureg_DECL_local_temporary(t->ureg);
                  ureg_U2F( t->ureg, ureg_writemask(temp, TGSI_WRITEMASK_X), t->systemValues[i]);
                  t->systemValues[i] = ureg_scalar(ureg_src(temp), 0);
               }
            }
            numSys++;
            sysInputs &= ~(1 << i);
         }
      }
   }

   if (program->IndirectRegisterFiles & (1 << PROGRAM_TEMPORARY)) {
      /* If temps are accessed with indirect addressing, declare temporaries
       * in sequential order.  Else, we declare them on demand elsewhere.
       */
      for (i = 0; i < program->NumTemporaries; i++) {
         /* XXX use TGSI_FILE_TEMPORARY_ARRAY when it's supported by ureg */
         t->temps[i] = ureg_DECL_temporary( t->ureg );
      }
   }

   /* Emit constants and immediates.  Mesa uses a single index space
    * for these, so we put all the translated regs in t->constants.
    */
   if (program->Parameters) {
      t->constants = calloc( program->Parameters->NumParameters,
                             sizeof t->constants[0] );
      if (t->constants == NULL) {
         ret = PIPE_ERROR_OUT_OF_MEMORY;
         goto out;
      }

      for (i = 0; i < program->Parameters->NumParameters; i++) {
         switch (program->Parameters->Parameters[i].Type) {
         case PROGRAM_STATE_VAR:
         case PROGRAM_UNIFORM:
            t->constants[i] = ureg_DECL_constant( ureg, i );
            break;

            /* Emit immediates only when there's no indirect addressing of
             * the const buffer.
             * FIXME: Be smarter and recognize param arrays:
             * indirect addressing is only valid within the referenced
             * array.
             */
         case PROGRAM_CONSTANT:
            if (program->IndirectRegisterFiles & PROGRAM_ANY_CONST)
               t->constants[i] = ureg_DECL_constant( ureg, i );
            else
               t->constants[i] = 
                  ureg_DECL_immediate( ureg,
                                       (const float*) program->Parameters->ParameterValues[i],
                                       4 );
            break;
         default:
            break;
         }
      }
   }

   /* texture samplers */
   for (i = 0; i < ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits; i++) {
      if (program->SamplersUsed & (1 << i)) {
         t->samplers[i] = ureg_DECL_sampler( ureg, i );
      }
   }

   /* Emit each instruction in turn:
    */
   for (i = 0; i < program->NumInstructions; i++) {
      set_insn_start( t, ureg_get_instruction_number( ureg ));
      compile_instruction( ctx, t, &program->Instructions[i], clamp_color );
   }

   /* Fix up all emitted labels:
    */
   for (i = 0; i < t->labels_count; i++) {
      ureg_fixup_label( ureg,
                        t->labels[i].token,
                        t->insn[t->labels[i].branch_target] );
   }

out:
   free(t->insn);
   free(t->labels);
   free(t->constants);

   if (t->error) {
      debug_printf("%s: translate error flag set\n", __func__);
   }

   return ret;
}