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#ifndef __PIXEL_SHADER_H__
#define __PIXEL_SHADER_H__
#include "r300_reg.h"
/* INSTR 0 */
#define PFS_OP_MAD 0
#define PFS_OP_DP3 1
#define PFS_OP_DP4 2
#define PFS_OP_MIN 4
#define PFS_OP_MAX 5
#define PFS_OP_CMP 8
#define PFS_OP_FRC 9
#define PFS_OP_OUTC_REPL_ALPHA 10
/* "or" these with arg0 value to negate or take absolute value of an argument */
#define PFS_ARG_NEG (1<<5)
#define PFS_ARG_ABS (1<<6)
#define MAKE_PFS_INSTR0(op, arg0, arg1, arg2, flags) \
( ((op)<<23) \
| ((arg0)<<R300_FPI0_ARG0C_SHIFT) \
| ((arg1)<<R300_FPI0_ARG1C_SHIFT) \
| ((arg2)<<R300_FPI0_ARG2C_SHIFT) \
| (flags) \
)
#define PFS_FLAG_X 1
#define PFS_FLAG_Y 2
#define PFS_FLAG_XY 3
#define PFS_FLAG_Z 4
#define PFS_FLAG_XZ 5
#define PFS_FLAG_YZ 6
#define PFS_FLAG_ALL 7
#define PFS_FLAG_NONE 0
#define EASY_PFS_INSTR0(op, arg0, arg1, arg2) \
MAKE_PFS_INSTR0(PFS_OP_##op, \
R300_FPI0_ARGC_##arg0, \
R300_FPI0_ARGC_##arg1, \
R300_FPI0_ARGC_##arg2, \
0)
/* INSTR 1 */
#define PFS_FLAG_CONST (1<<5)
#define MAKE_PFS_INSTR1(dstc, src0, src1, src2, reg, output) \
((src0) | ((src1) << R300_FPI1_SRC1C_SHIFT) \
| ((src2)<<R300_FPI1_SRC2C_SHIFT) \
| ((dstc) << R300_FPI1_DSTC_SHIFT) \
| ((reg) << 23) | ((output)<<26))
#define EASY_PFS_INSTR1(dstc, src0, src1, src2, reg, output) \
MAKE_PFS_INSTR1(dstc, src0, src1, src2, PFS_FLAG_##reg, PFS_FLAG_##output)
/* INSTR 2 */
/* you can "or" PFS_ARG_NEG with these values to negate them */
#define MAKE_PFS_INSTR2(op, arg0, arg1, arg2, flags) \
(((op) << 23) | \
((arg0)<<R300_FPI2_ARG0A_SHIFT) | \
((arg1)<<R300_FPI2_ARG1A_SHIFT) | \
((arg2)<<R300_FPI2_ARG2A_SHIFT) | \
(flags))
#define EASY_PFS_INSTR2(op, arg0, arg1, arg2) \
MAKE_PFS_INSTR2(R300_FPI2_OUTA_##op, \
R300_FPI2_ARGA_##arg0, \
R300_FPI2_ARGA_##arg1, \
R300_FPI2_ARGA_##arg2, \
0)
/* INSTR 3 */
#define PFS_FLAG_NONE 0
#define PFS_FLAG_REG 1
#define PFS_FLAG_OUTPUT 2
#define PFS_FLAG_BOTH 3
#define MAKE_PFS_INSTR3(dstc, src0, src1, src2, flags) \
((src0) | ((src1) << R300_FPI1_SRC1C_SHIFT) \
| ((src2)<<R300_FPI1_SRC2C_SHIFT) \
| ((dstc) << R300_FPI1_DSTC_SHIFT) \
| ((flags) << 23))
#define EASY_PFS_INSTR3(dstc, src0, src1, src2, flag) \
MAKE_PFS_INSTR3(dstc, src0, src1, src2, PFS_FLAG_##flag)
/* What are 0's ORed with flags ? They are register numbers that
just happen to be 0 */
#define PFS_NOP { \
EASY_PFS_INSTR0(MAD, SRC0C_XYZ, ONE, ZERO), \
EASY_PFS_INSTR1(0, 0, 0 | PFS_FLAG_CONST, 0 | PFS_FLAG_CONST, NONE, ALL), \
EASY_PFS_INSTR2(MAD, SRC0A, ONE, ZERO), \
EASY_PFS_INSTR3(0, 0, 0 | PFS_FLAG_CONST, 0 | PFS_FLAG_CONST, OUTPUT) \
}
#endif
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