SHBIN
Overview
The SHBIN (SHader BINary) file is used to contain compiled and linked shader programs. These can include vertex shaders (typically compiled from .vsh files) and geometry shaders (typically compiled from .gsh files, though .asm have been observed). In commercial games/apps, SHBIN files can be found as standalone files with the extension .shbin, or contained within .bcsdr files. BCSDR files use CGFX as a container, but the underlying DVLB/DVLP/DVLE structure remains unchanged.
A SHBIN's structure starts with a header, then a DVLP, then DVLE(s).
DVLB Header
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x4 | Magic "DVLB" |
| 0x4 | 0x4 | N = number of DVLEs in SHBIN |
| 0x8 | 0x4*N | DVLE offset table; each offset is a u32 relative to the start of the DVLB section |
The DVLP file comes directly after the header.
DVLP
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x4 | Magic "DVLP" |
| 0x4 | 0x4 | ? (Maybe a version number?) |
| 0x8 | 0x4 | Offset (relative to DVLP start) to the compiled shader binary blob |
| 0xC | 0x4 | Size of compiled shader binary blob, in words |
| 0x10 | 0x4 | Offset (relative to DVLP start) to shader instruction extension table |
| 0x14 | 0x4 | Number of shader instruction extension table entries (each entry is 8-byte long) |
| 0x18 | 0x4 | Offset (relative to DVLP start) to filename symbol table |
Instructions
Encoding
| Name | Description | Encoding |
|---|---|---|
| DT3 | Dot product vec3*vec3 | 0000 01DD DDDD ??AA AAAA BBBB BBXX XXXX |
| DT4 | Dot product vec4*vec4 | 0000 10DD DDDD ??AA AAAA BBBB BBXX XXXX |
| MOV | Move register | 0010 01DD DDDD ??AA AAAA 0000 00XX XXXX |
| CALL | Call subroutine | 1001 R??? 10SS SSSS SSSS SSLL LLLL LLLL |
| JMP | Jump | 1001 1110 ??SS SSSS SSSS SS00 0000 0000 |
| JMPB (?) | Jump to block (?) | 1001 110? ??SS SSSS SSSS SSLL LLLL LLLL |
| IF???/REP??? | Jump to IF/REP-block (?) | 1010 00?? ??SS SSSS SSSS SSLL LLLL LLLL |
| END | Ends a block (?) | 0b10000100000000000000000000000000 |
Fields
| Name | Description |
|---|---|
| D | dest register |
| A | opA register |
| B | opB register |
| X | extension id |
| S | absolute offset for code (in words) |
| L | number of instructions to execute |
| R | R=0 means S is relative, R=1 means S is absolute. |
DVLE
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x4 | Magic "DVLE" |
| 0x6 | 0x1 | Shader type (0x0 = vertex shader, 0x1 = geometry shader; might contain other flags) |
| 0x8 | 0x4 | Program's main offset in binary blob (in words) |
| 0xC | 0x4 | Program's endmain offset in binary blob (in words) |
| 0x18 | 0x4 | Offset (relative to DVLE start) to unk1 table |
| 0x1C | 0x4 | Number of entries in unk1 table (each entry is 0x14-byte long) |
| 0x20 | 0x4 | Offset (relative to DVLE start) to label table |
| 0x24 | 0x4 | Number of entries in label table (each entry is 0x10-byte long) |
| 0x28 | 0x4 | Offset (relative to DVLE start) to unk2 table |
| 0x2C | 0x4 | Number of entries in unk2 table (each entry is 0x8-byte long) |
| 0x30 | 0x4 | Offset (relative to DVLE start) to variable (?) table |
| 0x34 | 0x4 | Number of entries in variable table (each entry is 0x8-byte long) |
| 0x38 | 0x4 | Offset (relative to DVLE start) to symbol table |
| 0x3C | 0x4 | Size of symbol table (in bytes) |
Label table entry :
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x1 | Label ID |
| 0x4 | 0x4 | Offset (relative to shader program blob start) to label's location, in words |
| 0x8 | 0x4 | ? |
| 0xC | 0x4 | Offset (relative to DVLE symbol table start) to label's symbol |
Variable table entry :
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x4 | Offset (relative to DVLE symbol table start) to variable's symbol |
| 0x4 | 0x2 | Variable start register |
| 0x6 | 0x2 | Variable end register |
Each DVLE is associated to an individual shader shader program contained in the binary blob. A single shader binary blob may contain multiple shader programs of the same kind.
The data contained in unk1 table is sent over to the GPU.