slang_ir_storage Struct Reference

#include <slang_ir.h>

Data Fields
enum register_file	File
GLint	Index
GLint	Size
GLuint	Swizzle
GLint	RefCount
GLboolean	RelAddr
GLboolean	IsIndirect
enum register_file	IndirectFile
GLint	IndirectIndex
GLuint	IndirectSwizzle
GLuint	TexTarget
struct slang_ir_storage_ *	Parent

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Detailed Description

Describes where data/variables are stored in the various register files.

In the simple case, the File, Index and Size fields indicate where a variable is stored. For example, a vec3 variable may be stored as (File=PROGRAM_TEMPORARY, Index=6, Size=3). Or, File[Index]. Or, a program input like color may be stored as (File=PROGRAM_INPUT,Index=3,Size=4);

For single-float values, the Swizzle field indicates which component of the vector contains the float.

If IsIndirect is set, the storage is accessed through an indirect register lookup. The value in question will be located at: File[Index + IndirectFile[IndirectIndex]]

This is primary used for indexing arrays. For example, consider this GLSL code: uniform int i; float a[10]; float x = a[i];

here, storage for a[i] would be described by (File=PROGRAM_TEMPORAY, Index=aPos, IndirectFile=PROGRAM_UNIFORM, IndirectIndex=iPos), which would mean TEMP[aPos + UNIFORM[iPos]]

Definition at line 168 of file slang_ir.h.

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

• dll/3rdparty/mesa32/src/shader/slang/slang_ir.h