C++ (Cpp) emit_matrix_transform_vec3 Examples

Example #1

File: brw_vs_tnl.c Project: astrofimov/vgallium

static struct ureg get_eye_normal( struct tnl_program *p )
{
   if (is_undef(p->eye_normal)) {
      struct ureg normal = register_input(p, VERT_ATTRIB_NORMAL );
      struct ureg mvinv[3];

      register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 2,
			      STATE_MATRIX_INVTRANS, mvinv );

      p->eye_normal = reserve_temp(p);

      /* Transform to eye space:
       */
      emit_matrix_transform_vec3( p, p->eye_normal, mvinv, normal );

      /* Normalize/Rescale:
       */
      if (p->state->normalize) {
	 emit_normalize_vec3( p, p->eye_normal, p->eye_normal );
      }
      else if (p->state->rescale_normals) {
	 struct ureg rescale = register_param2(p, STATE_INTERNAL,
					       STATE_NORMAL_SCALE);

	 emit_op2( p, OPCODE_MUL, p->eye_normal, 0, p->eye_normal, 
		   swizzle1(rescale, X));
      }
   }

   return p->eye_normal;
}

Example #2

File: ffvertex_prog.c Project: toastpp/toastpp

static struct ureg get_transformed_normal( struct tnl_program *p )
{
   if (is_undef(p->transformed_normal) &&
       !p->state->need_eye_coords &&
       !p->state->normalize &&
       !(p->state->need_eye_coords == p->state->rescale_normals))
   {
      p->transformed_normal = register_input(p, VERT_ATTRIB_NORMAL );
   }
   else if (is_undef(p->transformed_normal))
   {
      struct ureg normal = register_input(p, VERT_ATTRIB_NORMAL );
      struct ureg mvinv[3];
      struct ureg transformed_normal = reserve_temp(p);

      if (p->state->need_eye_coords) {
         register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 2,
                                 STATE_MATRIX_INVTRANS, mvinv );

         /* Transform to eye space:
          */
         emit_matrix_transform_vec3( p, transformed_normal, mvinv, normal );
         normal = transformed_normal;
      }

      /* Normalize/Rescale:
       */
      if (p->state->normalize) {
	 emit_normalize_vec3( p, transformed_normal, normal );
         normal = transformed_normal;
      }
      else if (p->state->need_eye_coords == p->state->rescale_normals) {
         /* This is already adjusted for eye/non-eye rendering:
          */
	 struct ureg rescale = register_param2(p, STATE_INTERNAL,
                                               STATE_NORMAL_SCALE);

	 emit_op2( p, OPCODE_MUL, transformed_normal, 0, normal, rescale );
         normal = transformed_normal;
      }

      assert(normal.file == PROGRAM_TEMPORARY);
      p->transformed_normal = normal;
   }

   return p->transformed_normal;
}