prog_dst_register Struct Reference

#include <prog_instruction.h>

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Detailed Description

Instruction destination register.

Data Fields
GLuint	File:4
	One of the PROGRAM_* register file values.
GLuint	Index:INST_INDEX_BITS
	Unsigned, never negative.
GLuint	WriteMask:4
GLuint	RelAddr:1
GLuint	pad:28
Conditional destination update control.
Since: NV_fragment_program, NV_fragment_program_option, NV_vertex_program2, NV_vertex_program2_option.
GLuint	CondMask:4
	Takes one of the 9 possible condition values (EQ, FL, GT, GE, LE, LT, NE, TR, or UN).
GLuint	CondSwizzle:12
	Condition code swizzle value.
GLuint	CondSrc:1
	Selects the condition code register to use for conditional destination update masking.

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Field Documentation

GLuint prog_dst_register::File

One of the PROGRAM_* register file values.

GLuint prog_dst_register::Index

Unsigned, never negative.

GLuint prog_dst_register::WriteMask

GLuint prog_dst_register::RelAddr

GLuint prog_dst_register::CondMask

Takes one of the 9 possible condition values (EQ, FL, GT, GE, LE, LT, NE, TR, or UN).

Dest reg is only written to if the matching (swizzled) condition code value passes. When a conditional update mask is not specified, this will be COND_TR.

GLuint prog_dst_register::CondSwizzle

Condition code swizzle value.

GLuint prog_dst_register::CondSrc

Selects the condition code register to use for conditional destination update masking.

In NV_fragmnet_program or NV_vertex_program2 mode, only condition code register 0 is available. In NV_vertex_program3 mode, condition code registers 0 and 1 are available.

GLuint prog_dst_register::pad

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The documentation for this struct was generated from the following file:

• prog_instruction.h

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