示例#1
0
void *
util_make_fs_msaa_resolve(struct pipe_context *pipe,
                          enum tgsi_texture_type tgsi_tex, unsigned nr_samples,
                          enum tgsi_return_type stype)
{
   struct ureg_program *ureg;
   struct ureg_src sampler, coord;
   struct ureg_dst out, tmp_sum, tmp_coord, tmp;
   unsigned i;

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

   /* Declarations. */
   sampler = ureg_DECL_sampler(ureg, 0);
   ureg_DECL_sampler_view(ureg, 0, tgsi_tex, stype, stype, stype, stype);
   coord = ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_GENERIC, 0,
                              TGSI_INTERPOLATE_LINEAR);
   out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
   tmp_sum = ureg_DECL_temporary(ureg);
   tmp_coord = ureg_DECL_temporary(ureg);
   tmp = ureg_DECL_temporary(ureg);

   /* Instructions. */
   ureg_MOV(ureg, tmp_sum, ureg_imm1f(ureg, 0));
   ureg_F2U(ureg, tmp_coord, coord);

   for (i = 0; i < nr_samples; i++) {
      /* Read one sample. */
      ureg_MOV(ureg, ureg_writemask(tmp_coord, TGSI_WRITEMASK_W),
               ureg_imm1u(ureg, i));
      ureg_TXF(ureg, tmp, tgsi_tex, ureg_src(tmp_coord), sampler);

      if (stype == TGSI_RETURN_TYPE_UINT)
         ureg_U2F(ureg, tmp, ureg_src(tmp));
      else if (stype == TGSI_RETURN_TYPE_SINT)
         ureg_I2F(ureg, tmp, ureg_src(tmp));

      /* Add it to the sum.*/
      ureg_ADD(ureg, tmp_sum, ureg_src(tmp_sum), ureg_src(tmp));
   }

   /* Calculate the average and return. */
   ureg_MUL(ureg, tmp_sum, ureg_src(tmp_sum),
            ureg_imm1f(ureg, 1.0 / nr_samples));

   if (stype == TGSI_RETURN_TYPE_UINT)
      ureg_F2U(ureg, out, ureg_src(tmp_sum));
   else if (stype == TGSI_RETURN_TYPE_SINT)
      ureg_F2I(ureg, out, ureg_src(tmp_sum));
   else
      ureg_MOV(ureg, out, ureg_src(tmp_sum));

   ureg_END(ureg);

   return ureg_create_shader_and_destroy(ureg, pipe);
}
示例#2
0
static void
ureg_load_tex(struct ureg_program *ureg, struct ureg_dst out,
              struct ureg_src coord, struct ureg_src sampler,
              unsigned tex_target, bool load_level_zero, bool use_txf)
{
   if (use_txf) {
      struct ureg_dst temp = ureg_DECL_temporary(ureg);

      ureg_F2I(ureg, temp, coord);

      if (load_level_zero)
         ureg_TXF_LZ(ureg, out, tex_target, ureg_src(temp), sampler);
      else
         ureg_TXF(ureg, out, tex_target, ureg_src(temp), sampler);
   } else {
      if (load_level_zero)
         ureg_TEX_LZ(ureg, out, tex_target, coord, sampler);
      else
         ureg_TEX(ureg, out, tex_target, coord, sampler);
   }
}
示例#3
0
void *
util_make_fs_msaa_resolve_bilinear(struct pipe_context *pipe,
                                   enum tgsi_texture_type tgsi_tex,
                                   unsigned nr_samples,
                                   enum tgsi_return_type stype)
{
   struct ureg_program *ureg;
   struct ureg_src sampler, coord;
   struct ureg_dst out, tmp, top, bottom;
   struct ureg_dst tmp_coord[4], tmp_sum[4];
   unsigned i, c;

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

   /* Declarations. */
   sampler = ureg_DECL_sampler(ureg, 0);
   ureg_DECL_sampler_view(ureg, 0, tgsi_tex, stype, stype, stype, stype);
   coord = ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_GENERIC, 0,
                              TGSI_INTERPOLATE_LINEAR);
   out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
   for (c = 0; c < 4; c++)
      tmp_sum[c] = ureg_DECL_temporary(ureg);
   for (c = 0; c < 4; c++)
      tmp_coord[c] = ureg_DECL_temporary(ureg);
   tmp = ureg_DECL_temporary(ureg);
   top = ureg_DECL_temporary(ureg);
   bottom = ureg_DECL_temporary(ureg);

   /* Instructions. */
   for (c = 0; c < 4; c++)
      ureg_MOV(ureg, tmp_sum[c], ureg_imm1f(ureg, 0));

   /* Get 4 texture coordinates for the bilinear filter. */
   ureg_F2U(ureg, tmp_coord[0], coord); /* top-left */
   ureg_UADD(ureg, tmp_coord[1], ureg_src(tmp_coord[0]),
             ureg_imm4u(ureg, 1, 0, 0, 0)); /* top-right */
   ureg_UADD(ureg, tmp_coord[2], ureg_src(tmp_coord[0]),
             ureg_imm4u(ureg, 0, 1, 0, 0)); /* bottom-left */
   ureg_UADD(ureg, tmp_coord[3], ureg_src(tmp_coord[0]),
             ureg_imm4u(ureg, 1, 1, 0, 0)); /* bottom-right */

   for (i = 0; i < nr_samples; i++) {
      for (c = 0; c < 4; c++) {
         /* Read one sample. */
         ureg_MOV(ureg, ureg_writemask(tmp_coord[c], TGSI_WRITEMASK_W),
                  ureg_imm1u(ureg, i));
         ureg_TXF(ureg, tmp, tgsi_tex, ureg_src(tmp_coord[c]), sampler);

         if (stype == TGSI_RETURN_TYPE_UINT)
            ureg_U2F(ureg, tmp, ureg_src(tmp));
         else if (stype == TGSI_RETURN_TYPE_SINT)
            ureg_I2F(ureg, tmp, ureg_src(tmp));

         /* Add it to the sum.*/
         ureg_ADD(ureg, tmp_sum[c], ureg_src(tmp_sum[c]), ureg_src(tmp));
      }
   }

   /* Calculate the average. */
   for (c = 0; c < 4; c++)
      ureg_MUL(ureg, tmp_sum[c], ureg_src(tmp_sum[c]),
               ureg_imm1f(ureg, 1.0 / nr_samples));

   /* Take the 4 average values and apply a standard bilinear filter. */
   ureg_FRC(ureg, tmp, coord);

   ureg_LRP(ureg, top,
            ureg_scalar(ureg_src(tmp), 0),
            ureg_src(tmp_sum[1]),
            ureg_src(tmp_sum[0]));

   ureg_LRP(ureg, bottom,
            ureg_scalar(ureg_src(tmp), 0),
            ureg_src(tmp_sum[3]),
            ureg_src(tmp_sum[2]));

   ureg_LRP(ureg, tmp,
            ureg_scalar(ureg_src(tmp), 1),
            ureg_src(bottom),
            ureg_src(top));

   /* Convert to the texture format and return. */
   if (stype == TGSI_RETURN_TYPE_UINT)
      ureg_F2U(ureg, out, ureg_src(tmp));
   else if (stype == TGSI_RETURN_TYPE_SINT)
      ureg_F2I(ureg, out, ureg_src(tmp));
   else
      ureg_MOV(ureg, out, ureg_src(tmp));

   ureg_END(ureg);

   return ureg_create_shader_and_destroy(ureg, pipe);
}
示例#4
0
/**
 * Make simple fragment texture shader:
 *  IMM {0,0,0,1}                         // (if writemask != 0xf)
 *  MOV TEMP[0], IMM[0]                   // (if writemask != 0xf)
 *  TEX TEMP[0].writemask, IN[0], SAMP[0], 2D;
 *   .. optional SINT <-> UINT clamping ..
 *  MOV OUT[0], TEMP[0]
 *  END;
 *
 * \param tex_target  one of PIPE_TEXTURE_x
 * \parma interp_mode  either TGSI_INTERPOLATE_LINEAR or PERSPECTIVE
 * \param writemask  mask of TGSI_WRITEMASK_x
 */
void *
util_make_fragment_tex_shader_writemask(struct pipe_context *pipe,
                                        unsigned tex_target,
                                        unsigned interp_mode,
                                        unsigned writemask,
                                        enum tgsi_return_type stype,
                                        enum tgsi_return_type dtype,
                                        bool load_level_zero,
                                        bool use_txf)
{
   struct ureg_program *ureg;
   struct ureg_src sampler;
   struct ureg_src tex;
   struct ureg_dst temp;
   struct ureg_dst out;

   assert((stype == TGSI_RETURN_TYPE_FLOAT) == (dtype == TGSI_RETURN_TYPE_FLOAT));
   assert(interp_mode == TGSI_INTERPOLATE_LINEAR ||
          interp_mode == TGSI_INTERPOLATE_PERSPECTIVE);

   ureg = ureg_create( PIPE_SHADER_FRAGMENT );
   if (!ureg)
      return NULL;
   
   sampler = ureg_DECL_sampler( ureg, 0 );

   ureg_DECL_sampler_view(ureg, 0, tex_target, stype, stype, stype, stype);

   tex = ureg_DECL_fs_input( ureg, 
                             TGSI_SEMANTIC_GENERIC, 0, 
                             interp_mode );

   out = ureg_DECL_output( ureg, 
                           TGSI_SEMANTIC_COLOR,
                           0 );

   temp = ureg_DECL_temporary(ureg);

   if (writemask != TGSI_WRITEMASK_XYZW) {
      struct ureg_src imm = ureg_imm4f( ureg, 0, 0, 0, 1 );

      ureg_MOV( ureg, out, imm );
   }

   if (tex_target == TGSI_TEXTURE_BUFFER)
      ureg_TXF(ureg,
               ureg_writemask(temp, writemask),
               tex_target, tex, sampler);
   else
      ureg_load_tex(ureg, ureg_writemask(temp, writemask), tex, sampler,
                    tex_target, load_level_zero, use_txf);

   if (stype != dtype) {
      if (stype == TGSI_RETURN_TYPE_SINT) {
         assert(dtype == TGSI_RETURN_TYPE_UINT);

         ureg_IMAX(ureg, temp, ureg_src(temp), ureg_imm1i(ureg, 0));
      } else {
         assert(stype == TGSI_RETURN_TYPE_UINT);
         assert(dtype == TGSI_RETURN_TYPE_SINT);

         ureg_UMIN(ureg, temp, ureg_src(temp), ureg_imm1u(ureg, (1u << 31) - 1));
      }
   }

   ureg_MOV(ureg, out, ureg_src(temp));

   ureg_END( ureg );

   return ureg_create_shader_and_destroy( ureg, pipe );
}
示例#5
0
文件: st_pbo.c 项目: airlied/mesa
static void *
create_fs(struct st_context *st, bool download, enum pipe_texture_target target)
{
   struct pipe_context *pipe = st->pipe;
   struct pipe_screen *screen = pipe->screen;
   struct ureg_program *ureg;
   bool have_layer;
   struct ureg_dst out;
   struct ureg_src sampler;
   struct ureg_src pos;
   struct ureg_src layer;
   struct ureg_src const0;
   struct ureg_src const1;
   struct ureg_dst temp0;

   have_layer =
      st->pbo.layers &&
      (!download || target == PIPE_TEXTURE_1D_ARRAY
                 || target == PIPE_TEXTURE_2D_ARRAY
                 || target == PIPE_TEXTURE_3D
                 || target == PIPE_TEXTURE_CUBE
                 || target == PIPE_TEXTURE_CUBE_ARRAY);

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

   if (!download) {
      out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
   } else {
      struct ureg_src image;

      /* writeonly images do not require an explicitly given format. */
      image = ureg_DECL_image(ureg, 0, TGSI_TEXTURE_BUFFER, PIPE_FORMAT_NONE,
                                    true, false);
      out = ureg_dst(image);
   }

   sampler = ureg_DECL_sampler(ureg, 0);
   if (screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL)) {
      pos = ureg_DECL_system_value(ureg, TGSI_SEMANTIC_POSITION, 0);
   } else {
      pos = ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_POSITION, 0,
                               TGSI_INTERPOLATE_LINEAR);
   }
   if (have_layer) {
      layer = ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_LAYER, 0,
                                       TGSI_INTERPOLATE_CONSTANT);
   }
   const0  = ureg_DECL_constant(ureg, 0);
   const1  = ureg_DECL_constant(ureg, 1);
   temp0   = ureg_DECL_temporary(ureg);

   /* Note: const0 = [ -xoffset + skip_pixels, -yoffset, stride, image_height ] */

   /* temp0.xy = f2i(temp0.xy) */
   ureg_F2I(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_XY),
                  ureg_swizzle(pos,
                               TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y,
                               TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y));

   /* temp0.xy = temp0.xy + const0.xy */
   ureg_UADD(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_XY),
                   ureg_swizzle(ureg_src(temp0),
                                TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y,
                                TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y),
                   ureg_swizzle(const0,
                                TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y,
                                TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y));

   /* temp0.x = const0.z * temp0.y + temp0.x */
   ureg_UMAD(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_X),
                   ureg_scalar(const0, TGSI_SWIZZLE_Z),
                   ureg_scalar(ureg_src(temp0), TGSI_SWIZZLE_Y),
                   ureg_scalar(ureg_src(temp0), TGSI_SWIZZLE_X));

   if (have_layer) {
      /* temp0.x = const0.w * layer + temp0.x */
      ureg_UMAD(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_X),
                      ureg_scalar(const0, TGSI_SWIZZLE_W),
                      ureg_scalar(layer, TGSI_SWIZZLE_X),
                      ureg_scalar(ureg_src(temp0), TGSI_SWIZZLE_X));
   }

   /* temp0.w = 0 */
   ureg_MOV(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_W), ureg_imm1u(ureg, 0));

   if (download) {
      struct ureg_dst temp1;
      struct ureg_src op[2];

      temp1 = ureg_DECL_temporary(ureg);

      /* temp1.xy = pos.xy */
      ureg_F2I(ureg, ureg_writemask(temp1, TGSI_WRITEMASK_XY), pos);

      /* temp1.zw = 0 */
      ureg_MOV(ureg, ureg_writemask(temp1, TGSI_WRITEMASK_ZW), ureg_imm1u(ureg, 0));

      if (have_layer) {
         struct ureg_dst temp1_layer =
            ureg_writemask(temp1, target == PIPE_TEXTURE_1D_ARRAY ? TGSI_WRITEMASK_Y
                                                                  : TGSI_WRITEMASK_Z);

         /* temp1.y/z = layer */
         ureg_MOV(ureg, temp1_layer, ureg_scalar(layer, TGSI_SWIZZLE_X));

         if (target == PIPE_TEXTURE_3D) {
            /* temp1.z += layer_offset */
            ureg_UADD(ureg, temp1_layer,
                            ureg_scalar(ureg_src(temp1), TGSI_SWIZZLE_Z),
                            ureg_scalar(const1, TGSI_SWIZZLE_X));
         }
      }

      /* temp1 = txf(sampler, temp1) */
      ureg_TXF(ureg, temp1, util_pipe_tex_to_tgsi_tex(target, 1),
                     ureg_src(temp1), sampler);

      /* store(out, temp0, temp1) */
      op[0] = ureg_src(temp0);
      op[1] = ureg_src(temp1);
      ureg_memory_insn(ureg, TGSI_OPCODE_STORE, &out, 1, op, 2, 0,
                             TGSI_TEXTURE_BUFFER, PIPE_FORMAT_NONE);

      ureg_release_temporary(ureg, temp1);
   } else {
      /* out = txf(sampler, temp0.x) */
      ureg_TXF(ureg, out, TGSI_TEXTURE_BUFFER, ureg_src(temp0), sampler);
   }

   ureg_release_temporary(ureg, temp0);

   ureg_END(ureg);

   return ureg_create_shader_and_destroy(ureg, pipe);
}