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#ifndef __NV30_SHADER_H__
#define __NV30_SHADER_H__
/* Vertex programs instruction set
*
* 128bit opcodes, split into 4 32-bit ones for ease of use.
*
* Non-native instructions
* ABS - MOV + NV40_VP_INST0_DEST_ABS
* POW - EX2 + MUL + LG2
* SUB - ADD, second source negated
* SWZ - MOV
* XPD -
*
* Register access
* - Only one INPUT can be accessed per-instruction (move extras into TEMPs)
* - Only one CONST can be accessed per-instruction (move extras into TEMPs)
*
* Relative Addressing
* According to the value returned for
* MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB
*
* there are only two address registers available. The destination in the
* ARL instruction is set to TEMP <n> (The temp isn't actually written).
*
* When using vanilla ARB_v_p, the proprietary driver will squish both the
* available ADDRESS regs into the first hardware reg in the X and Y
* components.
*
* To use an address reg as an index into consts, the CONST_SRC is set to
* (const_base + offset) and INDEX_CONST is set.
*
* To access the second address reg use ADDR_REG_SELECT_1. A particular
* component of the address regs is selected with ADDR_SWZ.
*
* Only one address register can be accessed per instruction.
*
* Conditional execution (see NV_vertex_program{2,3} for details) Conditional
* execution of an instruction is enabled by setting COND_TEST_ENABLE, and
* selecting the condition which will allow the test to pass with
* COND_{FL,LT,...}. It is possible to swizzle the values in the condition
* register, which allows for testing against an individual component.
*
* Branching:
*
* The BRA/CAL instructions seem to follow a slightly different opcode
* layout. The destination instruction ID (IADDR) overlaps a source field.
* Instruction ID's seem to be numbered based on the UPLOAD_FROM_ID FIFO
* command, and is incremented automatically on each UPLOAD_INST FIFO
* command.
*
* Conditional branching is achieved by using the condition tests described
* above. There doesn't appear to be dedicated looping instructions, but
* this can be done using a temp reg + conditional branching.
*
* Subroutines may be uploaded before the main program itself, but the first
* executed instruction is determined by the PROGRAM_START_ID FIFO command.
*
*/
/* DWORD 0 */
/* guess that this is the same as nv40 */
#define NV30_VP_INST_INDEX_INPUT (1 << 27)
#define NV30_VP_INST_ADDR_REG_SELECT_1 (1 << 24)
#define NV30_VP_INST_SRC2_ABS (1 << 23) /* guess */
#define NV30_VP_INST_SRC1_ABS (1 << 22) /* guess */
#define NV30_VP_INST_SRC0_ABS (1 << 21) /* guess */
#define NV30_VP_INST_VEC_RESULT (1 << 20)
#define NV30_VP_INST_DEST_TEMP_ID_SHIFT 16
#define NV30_VP_INST_DEST_TEMP_ID_MASK (0x0F << 16)
#define NV30_VP_INST_COND_UPDATE_ENABLE (1<<15)
#define NV30_VP_INST_VEC_DEST_TEMP_MASK (0x1F << 16)
#define NV30_VP_INST_COND_TEST_ENABLE (1<<14)
#define NV30_VP_INST_COND_SHIFT 11
#define NV30_VP_INST_COND_MASK (0x07 << 11)
#define NV30_VP_INST_COND_SWZ_X_SHIFT 9
#define NV30_VP_INST_COND_SWZ_X_MASK (0x03 << 9)
#define NV30_VP_INST_COND_SWZ_Y_SHIFT 7
#define NV30_VP_INST_COND_SWZ_Y_MASK (0x03 << 7)
#define NV30_VP_INST_COND_SWZ_Z_SHIFT 5
#define NV30_VP_INST_COND_SWZ_Z_MASK (0x03 << 5)
#define NV30_VP_INST_COND_SWZ_W_SHIFT 3
#define NV30_VP_INST_COND_SWZ_W_MASK (0x03 << 3)
#define NV30_VP_INST_COND_SWZ_ALL_SHIFT 3
#define NV30_VP_INST_COND_SWZ_ALL_MASK (0xFF << 3)
#define NV30_VP_INST_ADDR_SWZ_SHIFT 1
#define NV30_VP_INST_ADDR_SWZ_MASK (0x03 << 1)
#define NV30_VP_INST_SCA_OPCODEH_SHIFT 0
#define NV30_VP_INST_SCA_OPCODEH_MASK (0x01 << 0)
/* DWORD 1 */
#define NV30_VP_INST_SCA_OPCODEL_SHIFT 28
#define NV30_VP_INST_SCA_OPCODEL_MASK (0x0F << 28)
#define NV30_VP_INST_VEC_OPCODE_SHIFT 23
#define NV30_VP_INST_VEC_OPCODE_MASK (0x1F << 23)
#define NV30_VP_INST_CONST_SRC_SHIFT 14
#define NV30_VP_INST_CONST_SRC_MASK (0xFF << 14)
#define NV30_VP_INST_INPUT_SRC_SHIFT 9 /*NV20*/
#define NV30_VP_INST_INPUT_SRC_MASK (0x0F << 9) /*NV20*/
#define NV30_VP_INST_SRC0H_SHIFT 0 /*NV20*/
#define NV30_VP_INST_SRC0H_MASK (0x1FF << 0) /*NV20*/
/* Please note: the IADDR fields overlap other fields because they are used
* only for branch instructions. See Branching: label above
*
* DWORD 2
*/
#define NV30_VP_INST_SRC0L_SHIFT 26 /*NV20*/
#define NV30_VP_INST_SRC0L_MASK (0x3F <<26) /* NV30_VP_SRC0_LOW_MASK << 26 */
#define NV30_VP_INST_SRC1_SHIFT 11 /*NV20*/
#define NV30_VP_INST_SRC1_MASK (0x7FFF<<11) /*NV20*/
#define NV30_VP_INST_SRC2H_SHIFT 0 /*NV20*/
#define NV30_VP_INST_SRC2H_MASK (0x7FF << 0) /* NV30_VP_SRC2_HIGH_MASK >> 4*/
#define NV30_VP_INST_IADDR_SHIFT 2
#define NV30_VP_INST_IADDR_MASK (0x1FF << 2) /* NV30_VP_SRC2_LOW_MASK << 28 */
/* DWORD 3 */
#define NV30_VP_INST_SRC2L_SHIFT 28 /*NV20*/
#define NV30_VP_INST_SRC2L_MASK (0x0F <<28) /*NV20*/
#define NV30_VP_INST_STEMP_WRITEMASK_SHIFT 24
#define NV30_VP_INST_STEMP_WRITEMASK_MASK (0x0F << 24)
#define NV30_VP_INST_VTEMP_WRITEMASK_SHIFT 20
#define NV30_VP_INST_VTEMP_WRITEMASK_MASK (0x0F << 20)
#define NV30_VP_INST_SDEST_WRITEMASK_SHIFT 16
#define NV30_VP_INST_SDEST_WRITEMASK_MASK (0x0F << 16)
#define NV30_VP_INST_VDEST_WRITEMASK_SHIFT 12 /*NV20*/
#define NV30_VP_INST_VDEST_WRITEMASK_MASK (0x0F << 12) /*NV20*/
#define NV30_VP_INST_DEST_SHIFT 2
#define NV30_VP_INST_DEST_MASK (0x1F << 2)
# define NV30_VP_INST_DEST_POS 0
# define NV30_VP_INST_DEST_BFC0 1
# define NV30_VP_INST_DEST_BFC1 2
# define NV30_VP_INST_DEST_COL0 3
# define NV30_VP_INST_DEST_COL1 4
# define NV30_VP_INST_DEST_FOGC 5
# define NV30_VP_INST_DEST_PSZ 6
# define NV30_VP_INST_DEST_TC(n) (8+(n))
# define NV30_VP_INST_DEST_CLP(n) (17 + (n))
/* guess that this is the same as nv40 */
#define NV30_VP_INST_INDEX_CONST (1 << 1)
/* Useful to split the source selection regs into their pieces */
#define NV30_VP_SRC0_HIGH_SHIFT 6
#define NV30_VP_SRC0_HIGH_MASK 0x00007FC0
#define NV30_VP_SRC0_LOW_MASK 0x0000003F
#define NV30_VP_SRC2_HIGH_SHIFT 4
#define NV30_VP_SRC2_HIGH_MASK 0x00007FF0
#define NV30_VP_SRC2_LOW_MASK 0x0000000F
/* Source-register definition - matches NV20 exactly */
#define NV30_VP_SRC_NEGATE (1<<14)
#define NV30_VP_SRC_SWZ_X_SHIFT 12
#define NV30_VP_SRC_REG_SWZ_X_MASK (0x03 <<12)
#define NV30_VP_SRC_SWZ_Y_SHIFT 10
#define NV30_VP_SRC_REG_SWZ_Y_MASK (0x03 <<10)
#define NV30_VP_SRC_SWZ_Z_SHIFT 8
#define NV30_VP_SRC_REG_SWZ_Z_MASK (0x03 << 8)
#define NV30_VP_SRC_SWZ_W_SHIFT 6
#define NV30_VP_SRC_REG_SWZ_W_MASK (0x03 << 6)
#define NV30_VP_SRC_REG_SWZ_ALL_SHIFT 6
#define NV30_VP_SRC_REG_SWZ_ALL_MASK (0xFF << 6)
#define NV30_VP_SRC_TEMP_SRC_SHIFT 2
#define NV30_VP_SRC_REG_TEMP_ID_MASK (0x0F << 0)
#define NV30_VP_SRC_REG_TYPE_SHIFT 0
#define NV30_VP_SRC_REG_TYPE_MASK (0x03 << 0)
#define NV30_VP_SRC_REG_TYPE_TEMP 1
#define NV30_VP_SRC_REG_TYPE_INPUT 2
#define NV30_VP_SRC_REG_TYPE_CONST 3 /* guess */
#include "nv30/nvfx_shader.h"
#endif
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