Subversion Repositories theia_gpu

`define ONE (32'h1 << `SCALE)

`define ONE (32'h1 << `SCALE)

`timescale 1ns / 1ps

`timescale 1ns / 1ps

`include "aDefinitions.v"

`include "aDefinitions.v"

/**********************************************************************************

/**********************************************************************************

Theia, Ray Cast Programable graphic Processing Unit.

Theia, Ray Cast Programable graphic Processing Unit.

Copyright (C) 2010  Diego Valverde (diego.valverde.g@gmail.com)

Copyright (C) 2010  Diego Valverde (diego.valverde.g@gmail.com)

This program is free software; you can redistribute it and/or

This program is free software; you can redistribute it and/or

modify it under the terms of the GNU General Public License

modify it under the terms of the GNU General Public License

as published by the Free Software Foundation; either version 2

as published by the Free Software Foundation; either version 2

of the License, or (at your option) any later version.

of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

along with this program; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

***********************************************************************************/

***********************************************************************************/

//--------------------------------------------------------

//--------------------------------------------------------

module ROM

module ROM

(

(

        input  wire[`ROM_ADDRESS_WIDTH-1:0]              Address,

        input  wire[`ROM_ADDRESS_WIDTH-1:0]              Address,

        output reg [`INSTRUCTION_WIDTH-1:0]              I

        output reg [`INSTRUCTION_WIDTH-1:0]              I

);

);

always @( Address )

always @( Address )

begin

begin

                        case (Address)

                        case (Address)

//Hardcoded stuff :(

//Hardcoded stuff :(

`define RAY_INSIDE_BOX                          `R3

`define RAY_INSIDE_BOX                          `R3

`define CURRENT_LIGHT_POS `CREG_FIRST_LIGTH  //TODO: CAHNEG T 

`define CURRENT_LIGHT_POS `CREG_FIRST_LIGTH  //TODO: CAHNEG T 

`define CURRENT_LIGHT_DIFFUSE 16'h6

`define CURRENT_LIGHT_DIFFUSE 16'h6

//-----------------------------------------------------------------

//-----------------------------------------------------------------

`define LABEL_DEBUG_PRINT_REGS 16'd221

`define LABEL_DEBUG_PRINT_REGS 16'd221

`define TAG_DEBUG_LOG_REGISTERS 16'd221

`define TAG_DEBUG_LOG_REGISTERS 16'd221

`define TAG_PSU_UCODE_ADRESS2 16'd212

`define TAG_PSU_UCODE_ADRESS2 16'd212

`define TAG_PSU_UCODE_ADRESS 16'd196

`define TAG_PSU_UCODE_ADRESS 16'd196

`define LABEL_TCC_EXIT 16'd195

`define LABEL_TCC_EXIT 16'd195

`define TAG_TCC_UCODE_ADDRESS 16'd154

`define TAG_TCC_UCODE_ADDRESS 16'd154

`define LABEL_BIU4 16'd153

`define LABEL_BIU4 16'd153

`define LABEL_BIU3 16'd143

`define LABEL_BIU3 16'd143

`define LABEL_BIU2 16'd140

`define LABEL_BIU2 16'd140

`define LABEL_BIU1 16'd138

`define LABEL_BIU1 16'd138

`define TAG_BIU_UCODE_ADDRESS 16'd121

`define TAG_BIU_UCODE_ADDRESS 16'd121

`define LABEL_HIT 16'd119

`define LABEL_HIT 16'd119

`define LABEL15 16'd117

`define LABEL15 16'd117

`define LABEL14 16'd115

`define LABEL14 16'd115

`define LABEL13 16'd113

`define LABEL13 16'd113

`define LABEL_TEST_XY_PLANE 16'd108

`define LABEL_TEST_XY_PLANE 16'd108

`define LABEL12 16'd106

`define LABEL12 16'd106

`define LABEL11 16'd104

`define LABEL11 16'd104

`define LABEL10 16'd102

`define LABEL10 16'd102

`define LABEL_TEST_XZ_PLANE 16'd96

`define LABEL_TEST_XZ_PLANE 16'd96

`define LABEL9 16'd94

`define LABEL9 16'd94

`define LABEL8 16'd92

`define LABEL8 16'd92

`define LABEL7 16'd90

`define LABEL7 16'd90

`define LABEL_TEST_YZ_PLANE 16'd84

`define LABEL_TEST_YZ_PLANE 16'd84

`define LABEL_RAY_INSIDE_BOX 16'd81

`define LABEL_RAY_INSIDE_BOX 16'd81

`define LABEL_ELSEZ 16'd80

`define LABEL_ELSEZ 16'd80

`define LABEL6 16'd77

`define LABEL6 16'd77

`define LABEL_ELESE_IFZ 16'd73

`define LABEL_ELESE_IFZ 16'd73

`define LABEL5 16'd70

`define LABEL5 16'd70

`define LABEL_TEST_RAY_Z_ORIGEN 16'd66

`define LABEL_TEST_RAY_Z_ORIGEN 16'd66

`define LABEL_ELSEY 16'd65

`define LABEL_ELSEY 16'd65

`define LABEL4 16'd62

`define LABEL4 16'd62

`define LABEL_ELESE_IFY 16'd58

`define LABEL_ELESE_IFY 16'd58

`define LABEL3 16'd55

`define LABEL3 16'd55

`define LABEL_TEST_RAY_Y_ORIGEN 16'd51

`define LABEL_TEST_RAY_Y_ORIGEN 16'd51

`define LABEL_ELSEX 16'd50

`define LABEL_ELSEX 16'd50

`define LABEL2 16'd47

`define LABEL2 16'd47

`define LABEL_ELSE_IFX 16'd43

`define LABEL_ELSE_IFX 16'd43

`define LABEL1 16'd40

`define LABEL1 16'd40

`define LABEL_TEST_RAY_X_ORIGEN 16'd36

`define LABEL_TEST_RAY_X_ORIGEN 16'd36

`define TAG_AABBIU_UCODE_ADDRESS 16'd33

`define TAG_AABBIU_UCODE_ADDRESS 16'd33

`define LABEL_NPG_NEXT_ROW 16'd30

`define LABEL_NPG_NEXT_ROW 16'd30

`define TAG_NPG_UCODE_ADDRESS 16'd24

`define TAG_NPG_UCODE_ADDRESS 16'd24

`define TAG_RGU_UCODE_ADDRESS 16'd17

`define TAG_RGU_UCODE_ADDRESS 16'd17

`define TAG_CPPU_UCODE_ADDRESS 16'd14

`define TAG_CPPU_UCODE_ADDRESS 16'd14

//This is the Code that loads in THEIAs ROM

//This is the Code that loads in THEIAs ROM

//-------------------------------------------------------------------------

//-------------------------------------------------------------------------

//Default values for some registers after reset

//Default values for some registers after reset

0: I = { `ZERO ,`CREG_LAST_t ,`VOID ,`VOID };

0: I = { `ZERO ,`CREG_LAST_t ,`VOID ,`VOID };

 //Set the last 't' to very positive value(500) 

 //Set the last 't' to very positive value(500) 

1: I = { `SETX ,`CREG_LAST_t ,32'h1F40000  };

1: I = { `SETX ,`CREG_LAST_t ,32'h1F40000  };

2: I = { `ZERO ,`OREG_PIXEL_COLOR ,`VOID ,`VOID };

2: I = { `ZERO ,`OREG_PIXEL_COLOR ,`VOID ,`VOID };

3: I =  { `NOP ,`RT_FALSE   }; //{ `ZERO ,`CREG_PIXEL_2D_POSITION ,`VOID ,`VOID }; 

3: I =  { `NOP ,`RT_FALSE   }; //{ `ZERO ,`CREG_PIXEL_2D_POSITION ,`VOID ,`VOID }; 

4: I = { `ZERO ,`OREG_PIXEL_PITCH ,`VOID,`VOID};

4: I = { `ZERO ,`OREG_PIXEL_PITCH ,`VOID,`VOID};

5: I = { `ZERO ,`R1 ,`VOID ,`VOID };

5: I = { `ZERO ,`R1 ,`VOID ,`VOID };

6: I = { `ZERO ,`R2 ,`VOID ,`VOID };

6: I = { `ZERO ,`R2 ,`VOID ,`VOID };

7: I = { `ZERO ,`R3 ,`VOID ,`VOID };

7: I = { `ZERO ,`R3 ,`VOID ,`VOID };

8: I = { `ZERO ,`R4 ,`VOID ,`VOID };

8: I = { `ZERO ,`R4 ,`VOID ,`VOID };

9: I = { `ZERO ,`R5 ,`VOID ,`VOID };

9: I = { `ZERO ,`R5 ,`VOID ,`VOID };

 //Harode texture size for now ...

 //Harode texture size for now ...

10: I = { `NOP ,`RT_FALSE   };//{ `SETX ,`CREG_TEXTURE_SIZE ,32'h1FE0000  }; 

10: I = { `NOP ,`RT_FALSE   };//{ `SETX ,`CREG_TEXTURE_SIZE ,32'h1FE0000  }; 

11: I = { `NOP ,`RT_FALSE   };//{ `SETY ,`CREG_TEXTURE_SIZE ,32'h1FE0000  }; 

11: I = { `NOP ,`RT_FALSE   };//{ `SETY ,`CREG_TEXTURE_SIZE ,32'h1FE0000  }; 

12: I = { `NOP ,`RT_FALSE   };//{ `SETZ ,`CREG_TEXTURE_SIZE ,32'h1FE0000  }; 

12: I = { `NOP ,`RT_FALSE   };//{ `SETZ ,`CREG_TEXTURE_SIZE ,32'h1FE0000  }; 

13: I = { `RETURN ,`RT_TRUE   };

13: I = { `RETURN ,`RT_TRUE   };

//----------------------------------------------------------------------          

//----------------------------------------------------------------------          

//Micro code for CPPU

//Micro code for CPPU

//TAG_CPPU_UCODE_ADDRESS:

//TAG_CPPU_UCODE_ADDRESS:

14: I = { `SUB ,`R1 ,`CREG_PROJECTION_WINDOW_MAX ,`CREG_PROJECTION_WINDOW_MIN };

14: I = { `SUB ,`R1 ,`CREG_PROJECTION_WINDOW_MAX ,`CREG_PROJECTION_WINDOW_MIN };

15: I = { `DIV ,`CREG_PROJECTION_WINDOW_SCALE ,`R1 ,`CREG_RESOLUTION };

15: I = { `DIV ,`CREG_PROJECTION_WINDOW_SCALE ,`R1 ,`CREG_RESOLUTION };

16: I = { `RETURN ,`RT_FALSE   };

16: I = { `RETURN ,`RT_FALSE   };

//----------------------------------------------------------------------          

//----------------------------------------------------------------------          

//Micro code for RGU

//Micro code for RGU

//TAG_RGU_UCODE_ADDRESS:

//TAG_RGU_UCODE_ADDRESS:

17: I = { `MUL ,`R1 ,`CREG_PIXEL_2D_POSITION ,`CREG_PROJECTION_WINDOW_SCALE };

17: I = { `MUL ,`R1 ,`CREG_PIXEL_2D_POSITION ,`CREG_PROJECTION_WINDOW_SCALE };

18: I = { `ADD ,`R1 ,`R1 ,`CREG_PROJECTION_WINDOW_MIN };

18: I = { `ADD ,`R1 ,`R1 ,`CREG_PROJECTION_WINDOW_MIN };

19: I = { `SUB ,`CREG_UNORMALIZED_DIRECTION ,`R1 ,`CREG_CAMERA_POSITION };

19: I = { `SUB ,`CREG_UNORMALIZED_DIRECTION ,`R1 ,`CREG_CAMERA_POSITION };

20: I = { `MAG ,`R2 ,`CREG_UNORMALIZED_DIRECTION ,`VOID };

20: I = { `MAG ,`R2 ,`CREG_UNORMALIZED_DIRECTION ,`VOID };

21: I = { `DIV ,`CREG_RAY_DIRECTION ,`CREG_UNORMALIZED_DIRECTION ,`R2 };

21: I = { `DIV ,`CREG_RAY_DIRECTION ,`CREG_UNORMALIZED_DIRECTION ,`R2 };

22: I = { `DEC,`CREG_LAST_COL,`CREG_RESOLUTION,`VOID};//{ `ZERO ,`R3 ,`VOID ,`VOID }; 

22: I = { `DEC,`CREG_LAST_COL,`CREG_RESOLUTION,`VOID};//{ `ZERO ,`R3 ,`VOID ,`VOID }; 

23: I = { `RETURN ,`RT_FALSE   };

23: I = { `RETURN ,`RT_FALSE   };

//----------------------------------------------------------------------

//----------------------------------------------------------------------

//Next Pixel generation Code (NPG)

//Next Pixel generation Code (NPG)

//TAG_NPG_UCODE_ADDRESS:

//TAG_NPG_UCODE_ADDRESS:

24: I = { `ZERO ,`R1 ,`VOID ,`VOID };

24: I = { `ZERO ,`R1 ,`VOID ,`VOID };

25: I = { `SETX ,`R1 ,32'h00003  };

25: I = { `SETX ,`R1 ,32'h00003  };

26: I = { `ADD ,`OREG_PIXEL_PITCH ,`OREG_PIXEL_PITCH ,`R1 };

26: I = { `ADD ,`OREG_PIXEL_PITCH ,`OREG_PIXEL_PITCH ,`R1 };

27: I = { `JEQX ,`LABEL_NPG_NEXT_ROW ,`CREG_PIXEL_2D_POSITION ,`CREG_LAST_COL }; //HERE WE ARE CALCULATING ELEMENT 200 :(

27: I = { `JEQX ,`LABEL_NPG_NEXT_ROW ,`CREG_PIXEL_2D_POSITION ,`CREG_LAST_COL }; //HERE WE ARE CALCULATING ELEMENT 200 :(

28: I = { `INCX ,`CREG_PIXEL_2D_POSITION ,`CREG_PIXEL_2D_POSITION ,`VOID };

28: I = { `INCX ,`CREG_PIXEL_2D_POSITION ,`CREG_PIXEL_2D_POSITION ,`VOID };

29: I = { `RETURN ,`RT_TRUE   };

29: I = { `RETURN ,`RT_TRUE   };

//LABEL_NPG_NEXT_ROW:

//LABEL_NPG_NEXT_ROW:

30: I = { `SETX ,`CREG_PIXEL_2D_POSITION ,32'h0  };

30: I = { `SETX ,`CREG_PIXEL_2D_POSITION ,32'h0  };

31: I = { `INCY ,`CREG_PIXEL_2D_POSITION ,`CREG_PIXEL_2D_POSITION,`VOID  };

31: I = { `INCY ,`CREG_PIXEL_2D_POSITION ,`CREG_PIXEL_2D_POSITION,`VOID  };

32: I = { `RETURN ,`RT_TRUE   };

32: I = { `RETURN ,`RT_TRUE   };

//----------------------------------------------------------------------

//----------------------------------------------------------------------

//Micro code for AABBIU

//Micro code for AABBIU

//TAG_AABBIU_UCODE_ADDRESS:

//TAG_AABBIU_UCODE_ADDRESS:

33: I = { `ZERO ,`R3 ,`VOID ,`VOID };

33: I = { `ZERO ,`R3 ,`VOID ,`VOID };

34: I = { `ZERO ,`R5 ,`VOID ,`VOID };

34: I = { `ZERO ,`R5 ,`VOID ,`VOID };

35: I = { `NOP ,`RT_FALSE   };

35: I = { `NOP ,`RT_FALSE   };

//LABEL_TEST_RAY_X_ORIGEN:

//LABEL_TEST_RAY_X_ORIGEN:

36: I = { `JGEX ,`LABEL_ELSE_IFX ,`CREG_CAMERA_POSITION ,`CREG_AABBMIN };

36: I = { `JGEX ,`LABEL_ELSE_IFX ,`CREG_CAMERA_POSITION ,`CREG_AABBMIN };

37: I = { `SUB ,`R1 ,`CREG_AABBMIN ,`CREG_CAMERA_POSITION };

37: I = { `SUB ,`R1 ,`CREG_AABBMIN ,`CREG_CAMERA_POSITION };

38: I = { `JLEX ,`LABEL1 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

38: I = { `JLEX ,`LABEL1 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

39: I = { `RETURN ,`RT_FALSE   };

39: I = { `RETURN ,`RT_FALSE   };

//LABEL1:

//LABEL1:

40: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

40: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

41: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

41: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

42: I = { `JMP ,`LABEL_TEST_RAY_Y_ORIGEN ,`VOID ,`VOID };

42: I = { `JMP ,`LABEL_TEST_RAY_Y_ORIGEN ,`VOID ,`VOID };

//LABEL_ELSE_IFX:

//LABEL_ELSE_IFX:

43: I = { `JLEX ,`LABEL_ELSEX ,`CREG_CAMERA_POSITION ,`CREG_AABBMAX };

43: I = { `JLEX ,`LABEL_ELSEX ,`CREG_CAMERA_POSITION ,`CREG_AABBMAX };

44: I = { `SUB ,`R1 ,`CREG_AABBMAX ,`CREG_CAMERA_POSITION };

44: I = { `SUB ,`R1 ,`CREG_AABBMAX ,`CREG_CAMERA_POSITION };

45: I = { `JGEX ,`LABEL2 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

45: I = { `JGEX ,`LABEL2 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

46: I = { `RETURN ,`RT_FALSE   };

46: I = { `RETURN ,`RT_FALSE   };

//LABEL2:

//LABEL2:

47: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

47: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

48: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

48: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

49: I = { `JMP ,`LABEL_TEST_RAY_Y_ORIGEN ,`VOID ,`VOID };

49: I = { `JMP ,`LABEL_TEST_RAY_Y_ORIGEN ,`VOID ,`VOID };

//LABEL_ELSEX:

//LABEL_ELSEX:

50: I = { `SETX ,`R5 ,32'b1  };

50: I = { `SETX ,`R5 ,32'b1  };

//LABEL_TEST_RAY_Y_ORIGEN:

//LABEL_TEST_RAY_Y_ORIGEN:

51: I = { `JGEY ,`LABEL_ELESE_IFY ,`CREG_CAMERA_POSITION ,`CREG_AABBMIN };

51: I = { `JGEY ,`LABEL_ELESE_IFY ,`CREG_CAMERA_POSITION ,`CREG_AABBMIN };

52: I = { `SUB ,`R1 ,`CREG_AABBMIN ,`CREG_CAMERA_POSITION };

52: I = { `SUB ,`R1 ,`CREG_AABBMIN ,`CREG_CAMERA_POSITION };

53: I = { `JLEY ,`LABEL3 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

53: I = { `JLEY ,`LABEL3 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

54: I = { `RETURN ,`RT_FALSE   };

54: I = { `RETURN ,`RT_FALSE   };

//LABEL3:

//LABEL3:

55: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

55: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

56: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

56: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

57: I = { `JMP ,`LABEL_TEST_RAY_Z_ORIGEN ,`VOID ,`VOID };

57: I = { `JMP ,`LABEL_TEST_RAY_Z_ORIGEN ,`VOID ,`VOID };

//LABEL_ELESE_IFY:

//LABEL_ELESE_IFY:

58: I = { `JLEY ,`LABEL_ELSEY ,`CREG_CAMERA_POSITION ,`CREG_AABBMAX };

58: I = { `JLEY ,`LABEL_ELSEY ,`CREG_CAMERA_POSITION ,`CREG_AABBMAX };

59: I = { `SUB ,`R1 ,`CREG_AABBMAX ,`CREG_CAMERA_POSITION };

59: I = { `SUB ,`R1 ,`CREG_AABBMAX ,`CREG_CAMERA_POSITION };

60: I = { `JGEY ,`LABEL4 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

60: I = { `JGEY ,`LABEL4 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

61: I = { `RETURN ,`RT_FALSE   };

61: I = { `RETURN ,`RT_FALSE   };

//LABEL4:

//LABEL4:

62: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

62: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

63: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

63: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

64: I = { `JMP ,`LABEL_TEST_RAY_Z_ORIGEN ,`VOID ,`VOID };

64: I = { `JMP ,`LABEL_TEST_RAY_Z_ORIGEN ,`VOID ,`VOID };

//LABEL_ELSEY:

//LABEL_ELSEY:

65: I = { `SETY ,`R5 ,32'b1  };

65: I = { `SETY ,`R5 ,32'b1  };

//LABEL_TEST_RAY_Z_ORIGEN:

//LABEL_TEST_RAY_Z_ORIGEN:

66: I = { `JGEZ ,`LABEL_ELESE_IFZ ,`CREG_CAMERA_POSITION ,`CREG_AABBMIN };

66: I = { `JGEZ ,`LABEL_ELESE_IFZ ,`CREG_CAMERA_POSITION ,`CREG_AABBMIN };

67: I = { `SUB ,`R1 ,`CREG_AABBMIN ,`CREG_CAMERA_POSITION };

67: I = { `SUB ,`R1 ,`CREG_AABBMIN ,`CREG_CAMERA_POSITION };

68: I = { `JLEZ ,`LABEL5 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

68: I = { `JLEZ ,`LABEL5 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

69: I = { `RETURN ,`RT_FALSE   };

69: I = { `RETURN ,`RT_FALSE   };

//LABEL5:

//LABEL5:

70: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

70: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

71: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

71: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

72: I = { `JMP ,`LABEL_RAY_INSIDE_BOX ,`VOID ,`VOID };

72: I = { `JMP ,`LABEL_RAY_INSIDE_BOX ,`VOID ,`VOID };

//LABEL_ELESE_IFZ:

//LABEL_ELESE_IFZ:

73: I = { `JLEZ ,`LABEL_ELSEZ ,`CREG_CAMERA_POSITION ,`CREG_AABBMAX };

73: I = { `JLEZ ,`LABEL_ELSEZ ,`CREG_CAMERA_POSITION ,`CREG_AABBMAX };

74: I = { `SUB ,`R1 ,`CREG_AABBMAX ,`CREG_CAMERA_POSITION };

74: I = { `SUB ,`R1 ,`CREG_AABBMAX ,`CREG_CAMERA_POSITION };

75: I = { `JGEZ ,`LABEL6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

75: I = { `JGEZ ,`LABEL6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

76: I = { `RETURN ,`RT_FALSE   };

76: I = { `RETURN ,`RT_FALSE   };

//LABEL6:

//LABEL6:

77: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

77: I = { `SETX ,`RAY_INSIDE_BOX ,32'd0  };

78: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

78: I = { `DIV ,`R6 ,`R1 ,`CREG_UNORMALIZED_DIRECTION };

79: I = { `JMP ,`LABEL_RAY_INSIDE_BOX ,`VOID ,`VOID };

79: I = { `JMP ,`LABEL_RAY_INSIDE_BOX ,`VOID ,`VOID };

//LABEL_ELSEZ:

//LABEL_ELSEZ:

80: I = { `SETZ ,`R5 ,32'b1  };

80: I = { `SETZ ,`R5 ,32'b1  };

//LABEL_RAY_INSIDE_BOX:

//LABEL_RAY_INSIDE_BOX:

81: I = { `ZERO ,`R1 ,`VOID ,`VOID };

81: I = { `ZERO ,`R1 ,`VOID ,`VOID };

82: I = { `JEQX ,`LABEL_TEST_YZ_PLANE ,`R1 ,`RAY_INSIDE_BOX };

82: I = { `JEQX ,`LABEL_TEST_YZ_PLANE ,`R1 ,`RAY_INSIDE_BOX };

83: I = { `RETURN ,`RT_TRUE   };

83: I = { `RETURN ,`RT_TRUE   };

//LABEL_TEST_YZ_PLANE:

//LABEL_TEST_YZ_PLANE:

84: I = { `JNEX ,`LABEL_TEST_XZ_PLANE ,`R5 ,`R1 };

84: I = { `JNEX ,`LABEL_TEST_XZ_PLANE ,`R5 ,`R1 };

85: I = { `SWIZZLE3D ,`R6 ,`SWIZZLE_XXX  };

85: I = { `SWIZZLE3D ,`R6 ,`SWIZZLE_XXX  };

86: I = { `MUL ,`R2 ,`CREG_UNORMALIZED_DIRECTION ,`R6 };

86: I = { `MUL ,`R2 ,`CREG_UNORMALIZED_DIRECTION ,`R6 };

87: I = { `ADD ,`R2 ,`R2 ,`CREG_CAMERA_POSITION };

87: I = { `ADD ,`R2 ,`R2 ,`CREG_CAMERA_POSITION };

88: I = { `JGEY ,`LABEL7 ,`R2 ,`CREG_AABBMIN };

88: I = { `JGEY ,`LABEL7 ,`R2 ,`CREG_AABBMIN };

89: I = { `RETURN ,`RT_FALSE   };

89: I = { `RETURN ,`RT_FALSE   };

//LABEL7:

//LABEL7:

90: I = { `JLEY ,`LABEL8 ,`R2 ,`CREG_AABBMAX };

90: I = { `JLEY ,`LABEL8 ,`R2 ,`CREG_AABBMAX };

91: I = { `RETURN ,`RT_FALSE   };

91: I = { `RETURN ,`RT_FALSE   };

//LABEL8:

//LABEL8:

92: I = { `JGEZ ,`LABEL9 ,`R2 ,`CREG_AABBMIN };

92: I = { `JGEZ ,`LABEL9 ,`R2 ,`CREG_AABBMIN };

93: I = { `RETURN ,`RT_FALSE   };

93: I = { `RETURN ,`RT_FALSE   };

//LABEL9:

//LABEL9:

94: I = { `JLEZ ,`LABEL_TEST_XZ_PLANE ,`R2 ,`CREG_AABBMAX };

94: I = { `JLEZ ,`LABEL_TEST_XZ_PLANE ,`R2 ,`CREG_AABBMAX };

95: I = { `RETURN ,`RT_FALSE   };

95: I = { `RETURN ,`RT_FALSE   };

//LABEL_TEST_XZ_PLANE:

//LABEL_TEST_XZ_PLANE:

96: I = { `JNEY ,`LABEL_TEST_XY_PLANE ,`R5 ,`R1 };

96: I = { `JNEY ,`LABEL_TEST_XY_PLANE ,`R5 ,`R1 };

97: I = { `SWIZZLE3D ,`R6 ,`SWIZZLE_YYY  };

97: I = { `SWIZZLE3D ,`R6 ,`SWIZZLE_YYY  };

98: I = { `MUL ,`R2 ,`CREG_UNORMALIZED_DIRECTION ,`R6 };

98: I = { `MUL ,`R2 ,`CREG_UNORMALIZED_DIRECTION ,`R6 };

99: I = { `ADD ,`R2 ,`R2 ,`CREG_CAMERA_POSITION };

99: I = { `ADD ,`R2 ,`R2 ,`CREG_CAMERA_POSITION };

100: I = { `JGEX ,`LABEL10 ,`R2 ,`CREG_AABBMIN };

100: I = { `JGEX ,`LABEL10 ,`R2 ,`CREG_AABBMIN };

101: I = { `RETURN ,`RT_FALSE   };

101: I = { `RETURN ,`RT_FALSE   };

//LABEL10:

//LABEL10:

102: I = { `JLEX ,`LABEL11 ,`R2 ,`CREG_AABBMAX };

102: I = { `JLEX ,`LABEL11 ,`R2 ,`CREG_AABBMAX };

103: I = { `RETURN ,`RT_FALSE   };

103: I = { `RETURN ,`RT_FALSE   };

//LABEL11:

//LABEL11:

104: I = { `JGEZ ,`LABEL12 ,`R2 ,`CREG_AABBMIN };

104: I = { `JGEZ ,`LABEL12 ,`R2 ,`CREG_AABBMIN };

105: I = { `RETURN ,`RT_FALSE   };

105: I = { `RETURN ,`RT_FALSE   };

//LABEL12:

//LABEL12:

106: I = { `JLEZ ,`LABEL_TEST_XY_PLANE ,`R2 ,`CREG_AABBMAX };

106: I = { `JLEZ ,`LABEL_TEST_XY_PLANE ,`R2 ,`CREG_AABBMAX };

107: I = { `RETURN ,`RT_FALSE   };

107: I = { `RETURN ,`RT_FALSE   };

//LABEL_TEST_XY_PLANE:

//LABEL_TEST_XY_PLANE:

108: I = { `SWIZZLE3D ,`R6 ,`SWIZZLE_ZZZ  };

108: I = { `SWIZZLE3D ,`R6 ,`SWIZZLE_ZZZ  };

109: I = { `MUL ,`R2 ,`CREG_UNORMALIZED_DIRECTION ,`R6 };

109: I = { `MUL ,`R2 ,`CREG_UNORMALIZED_DIRECTION ,`R6 };

110: I = { `ADD ,`R2 ,`R2 ,`CREG_CAMERA_POSITION };

110: I = { `ADD ,`R2 ,`R2 ,`CREG_CAMERA_POSITION };

111: I = { `JGEX ,`LABEL13 ,`R2 ,`CREG_AABBMIN };

111: I = { `JGEX ,`LABEL13 ,`R2 ,`CREG_AABBMIN };

112: I = { `RETURN ,`RT_FALSE   };

112: I = { `RETURN ,`RT_FALSE   };

//LABEL13:

//LABEL13:

113: I = { `JLEX ,`LABEL14 ,`R2 ,`CREG_AABBMAX };

113: I = { `JLEX ,`LABEL14 ,`R2 ,`CREG_AABBMAX };

114: I = { `RETURN ,`RT_FALSE   };

114: I = { `RETURN ,`RT_FALSE   };

//LABEL14:

//LABEL14:

115: I = { `JGEY ,`LABEL15 ,`R2 ,`CREG_AABBMIN };

115: I = { `JGEY ,`LABEL15 ,`R2 ,`CREG_AABBMIN };

116: I = { `RETURN ,`RT_FALSE   };

116: I = { `RETURN ,`RT_FALSE   };

//LABEL15:

//LABEL15:

117: I = { `JLEY ,`LABEL_HIT ,`R2 ,`CREG_AABBMAX };

117: I = { `JLEY ,`LABEL_HIT ,`R2 ,`CREG_AABBMAX };

118: I = { `RETURN ,`RT_FALSE   };

118: I = { `RETURN ,`RT_FALSE   };

//LABEL_HIT:

//LABEL_HIT:

119: I = { `SETX ,`CREG_LAST_t ,32'h1F40000  };

119: I = { `SETX ,`CREG_LAST_t ,32'h1F40000  };

120: I = { `RETURN ,`RT_TRUE   };

120: I = { `RETURN ,`RT_TRUE   };

 //------------------------------------------------------------------------

 //------------------------------------------------------------------------

 //BIU Micro code

 //BIU Micro code

//TAG_BIU_UCODE_ADDRESS:

//TAG_BIU_UCODE_ADDRESS:

121: I = { `ZERO ,`OREG_PIXEL_COLOR ,`VOID ,`VOID };

121: I = { `ZERO ,`OREG_PIXEL_COLOR ,`VOID ,`VOID };

122: I = { `SETX ,`R3 ,`ONE  };

122: I = { `SETX ,`R3 ,`ONE  };

123: I = { `SETX ,`R1 ,32'h00000  };

123: I = { `SETX ,`R1 ,32'h00000  };

124: I = { `SUB ,`CREG_E1 ,`CREG_V1 ,`CREG_V0 };

124: I = { `SUB ,`CREG_E1 ,`CREG_V1 ,`CREG_V0 };

125: I = { `SUB ,`CREG_E2 ,`CREG_V2 ,`CREG_V0 };

125: I = { `SUB ,`CREG_E2 ,`CREG_V2 ,`CREG_V0 };

126: I = { `SUB ,`CREG_T ,`CREG_CAMERA_POSITION ,`CREG_V0 };

126: I = { `SUB ,`CREG_T ,`CREG_CAMERA_POSITION ,`CREG_V0 };

127: I = { `CROSS ,`CREG_P ,`CREG_RAY_DIRECTION ,`CREG_E2 };

127: I = { `CROSS ,`CREG_P ,`CREG_RAY_DIRECTION ,`CREG_E2 };

128: I = { `CROSS ,`CREG_Q ,`CREG_T ,`CREG_E1 };

128: I = { `CROSS ,`CREG_Q ,`CREG_T ,`CREG_E1 };

129: I = { `DOT ,`CREG_H1 ,`CREG_Q ,`CREG_E2 };

129: I = { `DOT ,`CREG_H1 ,`CREG_Q ,`CREG_E2 };

130: I = { `DOT ,`CREG_H2 ,`CREG_P ,`CREG_T };

130: I = { `DOT ,`CREG_H2 ,`CREG_P ,`CREG_T };

131: I = { `DOT ,`CREG_H3 ,`CREG_Q ,`CREG_RAY_DIRECTION };

131: I = { `DOT ,`CREG_H3 ,`CREG_Q ,`CREG_RAY_DIRECTION };

132: I = { `DOT ,`CREG_DELTA ,`CREG_P ,`CREG_E1 };

132: I = { `DOT ,`CREG_DELTA ,`CREG_P ,`CREG_E1 };

133: I = { `DIV ,`CREG_t ,`CREG_H1 ,`CREG_DELTA };

133: I = { `DIV ,`CREG_t ,`CREG_H1 ,`CREG_DELTA };

134: I = { `DIV ,`CREG_u ,`CREG_H2 ,`CREG_DELTA };

134: I = { `DIV ,`CREG_u ,`CREG_H2 ,`CREG_DELTA };

135: I = { `DIV ,`CREG_v ,`CREG_H3 ,`CREG_DELTA };

135: I = { `DIV ,`CREG_v ,`CREG_H3 ,`CREG_DELTA };

136: I = { `JGEX ,`LABEL_BIU1 ,`CREG_u ,`R1 };

136: I = { `JGEX ,`LABEL_BIU1 ,`CREG_u ,`R1 };

137: I = { `RETURN ,`RT_FALSE   };

137: I = { `RETURN ,`RT_FALSE   };

//LABEL_BIU1:

//LABEL_BIU1:

138: I = { `JGEX ,`LABEL_BIU2 ,`CREG_v ,`R1 };

138: I = { `JGEX ,`LABEL_BIU2 ,`CREG_v ,`R1 };

139: I = { `RETURN ,`RT_FALSE   };

139: I = { `RETURN ,`RT_FALSE   };

//LABEL_BIU2:

//LABEL_BIU2:

140: I = { `ADD ,`R2 ,`CREG_u ,`CREG_v };

140: I = { `ADD ,`R2 ,`CREG_u ,`CREG_v };

141: I = { `JLEX ,`LABEL_BIU3 ,`R2 ,`R3 };

141: I = { `JLEX ,`LABEL_BIU3 ,`R2 ,`R3 };

142: I = { `RETURN ,`RT_FALSE   };

142: I = { `RETURN ,`RT_FALSE   };

//LABEL_BIU3:

//LABEL_BIU3:

143: I = { `JGEX ,`LABEL_BIU4 ,`CREG_t ,`CREG_LAST_t };

143: I = { `JGEX ,`LABEL_BIU4 ,`CREG_t ,`CREG_LAST_t };

144: I = { `COPY ,`CREG_LAST_t ,`CREG_t ,`VOID };

144: I = { `COPY ,`CREG_LAST_t ,`CREG_t ,`VOID };

145: I = { `COPY ,`CREG_LAST_u ,`CREG_u ,`VOID };

145: I = { `COPY ,`CREG_LAST_u ,`CREG_u ,`VOID };

146: I = { `COPY ,`CREG_LAST_v ,`CREG_v ,`VOID };

146: I = { `COPY ,`CREG_LAST_v ,`CREG_v ,`VOID };

147: I = { `COPY ,`CREG_E1_LAST ,`CREG_E1 ,`VOID };

147: I = { `COPY ,`CREG_E1_LAST ,`CREG_E1 ,`VOID };

148: I = { `COPY ,`CREG_E2_LAST ,`CREG_E2 ,`VOID };

148: I = { `COPY ,`CREG_E2_LAST ,`CREG_E2 ,`VOID };

149: I = { `COPY ,`CREG_UV0_LAST ,`CREG_UV0 ,`VOID };

149: I = { `COPY ,`CREG_UV0_LAST ,`CREG_UV0 ,`VOID };

150: I = { `COPY ,`CREG_UV1_LAST ,`CREG_UV1 ,`VOID };

150: I = { `COPY ,`CREG_UV1_LAST ,`CREG_UV1 ,`VOID };

151: I = { `COPY ,`CREG_UV2_LAST ,`CREG_UV2 ,`VOID };

151: I = { `COPY ,`CREG_UV2_LAST ,`CREG_UV2 ,`VOID };

152: I = { `COPY ,`CREG_TRI_DIFFUSE_LAST ,`CREG_TRI_DIFFUSE ,`VOID };

152: I = { `COPY ,`CREG_TRI_DIFFUSE_LAST ,`CREG_TRI_DIFFUSE ,`VOID };

//LABEL_BIU4:

//LABEL_BIU4:

153: I = { `RETURN ,`RT_TRUE   };

153: I = { `RETURN ,`RT_TRUE   };

//-------------------------------------------------------------------------

//-------------------------------------------------------------------------

//Calculate the adress of the texure coordiantes.

//Calculate the adress of the texure coordiantes.

//TAG_TCC_UCODE_ADDRESS:

//TAG_TCC_UCODE_ADDRESS:

//Do this calculation only if this triangle is the one closest to the camera

//Do this calculation only if this triangle is the one closest to the camera

154: I = { `JGX ,`LABEL_TCC_EXIT ,`CREG_t ,`CREG_LAST_t };

154: I = { `JGX ,`LABEL_TCC_EXIT ,`CREG_t ,`CREG_LAST_t };

//First get the UV coodrinates and store in R1

//First get the UV coodrinates and store in R1

//R1x: u_coordinate = U0 + last_u * (U1 - U0) + last_v * (U2 - U0);

//R1x: u_coordinate = U0 + last_u * (U1 - U0) + last_v * (U2 - U0);

//R1y: v_coordinate = V0 + last_u * (V1 - V0) + last_v * (V2 - V0);

//R1y: v_coordinate = V0 + last_u * (V1 - V0) + last_v * (V2 - V0);

//R1z: 0

//R1z: 0

155: I = { `SUB ,`R1 ,`CREG_UV1_LAST ,`CREG_UV0_LAST };

155: I = { `SUB ,`R1 ,`CREG_UV1_LAST ,`CREG_UV0_LAST };

156: I = { `SUB ,`R2 ,`CREG_UV2_LAST ,`CREG_UV0_LAST };

156: I = { `SUB ,`R2 ,`CREG_UV2_LAST ,`CREG_UV0_LAST };

157: I = { `MUL ,`R1 ,`CREG_LAST_u ,`R1 };

157: I = { `MUL ,`R1 ,`CREG_LAST_u ,`R1 };

158: I = { `MUL ,`R2 ,`CREG_LAST_v ,`R2 };

158: I = { `MUL ,`R2 ,`CREG_LAST_v ,`R2 };

159: I = { `ADD ,`R1 ,`R1 ,`R2 };

159: I = { `ADD ,`R1 ,`R1 ,`R2 };

160: I = { `ADD ,`R1 ,`R1 ,`CREG_UV0 };

160: I = { `ADD ,`R1 ,`R1 ,`CREG_UV0 };

//R7x : fu = (u_coordinate) * gTexture.mWidth;

//R7x : fu = (u_coordinate) * gTexture.mWidth;

//R7y : fv = (v_coordinate) * gTexture.mWidth;

//R7y : fv = (v_coordinate) * gTexture.mWidth;

//R7z : 0

//R7z : 0

161: I = { `MUL ,`R7 ,`R1 ,`CREG_TEXTURE_SIZE };

161: I = { `MUL ,`R7 ,`R1 ,`CREG_TEXTURE_SIZE };

//R1x: u1 = ((int)fu) % gTexture.mWidth;

//R1x: u1 = ((int)fu) % gTexture.mWidth;

//R1y: v1 = ((int)fv) % gTexture.mHeight;

//R1y: v1 = ((int)fv) % gTexture.mHeight;

//R1z: 0

//R1z: 0

//R2x: u2 = (u1 + 1 ) % gTexture.mWidth;

//R2x: u2 = (u1 + 1 ) % gTexture.mWidth;

//R2y: v2 = (v2 + 1 ) % gTexture.mHeight;

//R2y: v2 = (v2 + 1 ) % gTexture.mHeight;

//R2z: 0

//R2z: 0

// Notice MOD2 only operates over

// Notice MOD2 only operates over

// numbers that are power of 2, also notice that the

// numbers that are power of 2, also notice that the

// textures are assumed to be squares!

// textures are assumed to be squares!

//x % 2^n == x & (2^n - 1).

//x % 2^n == x & (2^n - 1).

162: I = { `MOD ,`R1 ,`R7 ,`CREG_TEXTURE_SIZE };

162: I = { `MOD ,`R1 ,`R7 ,`CREG_TEXTURE_SIZE };

163: I = { `INC ,`R2 ,`R1 ,`VOID };

163: I = { `INC ,`R2 ,`R1 ,`VOID };

164: I = { `MOD ,`R2 ,`R2 ,`CREG_TEXTURE_SIZE };

164: I = { `MOD ,`R2 ,`R2 ,`CREG_TEXTURE_SIZE };

//Cool, now we should store the values in the appropiate registers

//Cool, now we should store the values in the appropiate registers

//OREG_TEX_COORD1.x = u1 + v1 * gTexture.mWidth

//OREG_TEX_COORD1.x = u1 + v1 * gTexture.mWidth

//OREG_TEX_COORD1.y = u2 + v1 * gTexture.mWidth

//OREG_TEX_COORD1.y = u2 + v1 * gTexture.mWidth

//OREG_TEX_COORD1.z = 0

//OREG_TEX_COORD1.z = 0

//OREG_TEX_COORD2.x = u1 + v2 * gTexture.mWidth

//OREG_TEX_COORD2.x = u1 + v2 * gTexture.mWidth

//OREG_TEX_COORD2.y = u2 + v2 * gTexture.mWidth

//OREG_TEX_COORD2.y = u2 + v2 * gTexture.mWidth

//OREG_TEX_COORD1.z = 0

//OREG_TEX_COORD1.z = 0

//R1= [u1, v1, 0]

//R1= [u1, v1, 0]

//R2= [u2, v2, 0]

//R2= [u2, v2, 0]

//R2 = [v2, u2, 0]

//R2 = [v2, u2, 0]

165: I = { `SWIZZLE3D ,`R2 ,`SWIZZLE_YXZ  };

165: I = { `SWIZZLE3D ,`R2 ,`SWIZZLE_YXZ  };

//R3 = [v2 v1 0]

//R3 = [v2 v1 0]

166: I = { `XCHANGEX ,`R3 ,`R1 ,`R2 };

166: I = { `XCHANGEX ,`R3 ,`R1 ,`R2 };

//R4 = [u1, u2 0]

//R4 = [u1, u2 0]

167: I = { `XCHANGEX ,`R4 ,`R2 ,`R1 };

167: I = { `XCHANGEX ,`R4 ,`R2 ,`R1 };

//R2 = [v2*H, v1*H, 0]

//R2 = [v2*H, v1*H, 0]

//R2 = FixedToInteger(R3*CREG_TEXTURE_SIZE)

//R2 = FixedToInteger(R3*CREG_TEXTURE_SIZE)

168: I = { `UNSCALE ,`R9 ,`R3 ,`VOID };

168: I = { `UNSCALE ,`R9 ,`R3 ,`VOID };

169: I = { `UNSCALE ,`R8 ,`CREG_TEXTURE_SIZE ,`VOID };

169: I = { `UNSCALE ,`R8 ,`CREG_TEXTURE_SIZE ,`VOID };

170: I = { `IMUL ,`R2 ,`R9 ,`R8 };

170: I = { `IMUL ,`R2 ,`R9 ,`R8 };

//OREG_TEX_COORD1 = [u1 + v2*H, u2 + v1*H, 0]

//OREG_TEX_COORD1 = [u1 + v2*H, u2 + v1*H, 0]

//R4 = FixedToIinteger(R4)

//R4 = FixedToIinteger(R4)

171: I = { `UNSCALE ,`R4 ,`R4 ,`VOID };