Pixel Formats - Pixel Formats

Pixel Formats - Pixel Formats - AM026

Versal AI Edge Series Gen 2 and Prime Series Gen 2 Technical Reference Manual (AM026)

Document ID

AM026

Release Date

2025-12-23

Revision

1.3 English

Table 1. RGB Formats
Format	Order	Support
rgba	Packed as RGBA (identity transformation).	RW
grba	Packed as GRBA (swap R and G).	RW
bgra	Packed as BGRA (swap R and B).	RW
argb	Packed as ARGB (move A).	RW
agrb	Packed as AGRB (move A, swap R and G).	RW
abgr	Packed as ABGR (move A, swap R and B).	RW
rgb1	Packed as RGB (identity transformation, A=1).	RW
grb1	Packed as GRB (swap R and G, A=1).	RW
bgr1	Packed as BGR (swap R and B, A=1).	RW
1rgb	Packed as XRGB (move A, A=1).	RW
1grb	Packed as XGRB (move A, swap R and G, A=1).	RW
1bgr	Packed as XBGR (move A, swap R and B, A=1).	RW
intensity	Reads (R) as (R,R,R,R). For use with format R8 to emulate I8 format.	R
luma	Reads (R) as (R,R,R,1). For use with format R8 to emulate L8 format.	R
luma_alpha	Reads (R,x,x,A) as (R,R,R,A). For use with format R8A8 to emulate L8A8 format.	R

Table 2. Non-compressed RGB Support
Format	Bits per Texel	Alignment	UNORM	sRGB	SNORM	UINT	SINT	FLOAT	AFBC format
R8	8	1	RW	RW	RW	RW	RW		R8
R4G4	8	1	R		R	R	R
R2G2B2A2	8	1	R		R	R	R
R16	16	2	RW		RW	RW	RW	RW
R8G8	16	1	RW	RW	RW	RW	RW		R8G8
R5G6B5	16	2	RW						R5G6B5
R4G4B4A4	16	2	RW		RW	RW	RW		R4G4B4A4
R5G5B5A1	16	2	RW						R5G5B5A1
A1B5G5R5	16	2	RW
R8G8B8	24	1	RW	RW	RW	RW	RW		R8G8B8
R32	32	4	W		W	RW	RW	RW
R16G16	32	2	RW		RW	RW	RW	RW
R11G11B10	32	4						RW
B10G11R11	32	4						RW
R9G9B9E5	32	4						RW
E5B9G9R9	32	4						RW
R8G8B8A8	32	1	RW	RW	RW	RW	RW		R8G8B8A8
R10G10B10A2	32	4	RW		W	RW	RW		R10G10B10A2
A2B10G10R10	32	4	RW		W	RW	RW
R16G16B16	48	2	RW		RW	RW	RW	RW
R32G32	64	4	W		W	RW	RW	RW
R16G16B16A16	64	2	RW		RW	RW	RW	RW
R32G32B32	96	4	W		W	RW	RW	RW
R32G32B32A32	128	4	W		W	RW	RW	RW
R4A4	8	1	R
A4R4	8	1	R
R8A8	16	2	RW	RW
A8R8	16	2	RW	RW
A8	8	1	RW	RW
RAW10	10	1				R
RAW12	12	1				R
R8G8B8G8	16	4	R	R
G8R8G8B8	16	4	R	R

Table 3. Lossless Compressed RGB Support
Format	UNORM	sRGB	SNORM	UINT	SINT	Expands to
AFBC_R8	RW	RW	RW	RW	RW	R8
AFBC_R8G8	RW	RW	RW	RW	RW	R8G8
AFBC_R5G6B5	RW					R5G6B5
AFBC_R4G4B4A4	RW		RW	RW	RW	R4G4B4A4
AFBC_R5G5B5A1	RW					R5G5B5A1
AFBC_R8G8B8	RW	RW	RW	RW	RW	R8G8B8
AFBC_R8G8B8A8	RW	RW	RW	RW	RW	R8G8B8A8
AFBC_R10G10B10A2	RW		W	RW	RW	R10G10B10A2

Table 4. Texture Formats Supported
Format	Alignment	GLES 2.x/3.x	Vulkan 1.1
ETC2	8	GLES 2.x: GL_OES_compressed_ETC1_RGB8_texture, GLES 3.x: Required
ETC2_PTA	8
ETC2_EAC	16
EAC_1	8
EAC_2	16
ASTC_2D_LDR_SRGB	16
ASTC_2D_LDR	16	GL_KHR_texture_compression_astc_ldr
ASTC_2D_LDR	16	GLES 3.2: Required
ASTC_2D_HDR	16	GLES3: GL_KHR_texture_compression_astc_hdr
ASTC_3D_LDR_SRGB	16
ASTC_3D_LDR	16	GLES3: GL_OES_texture_compression_astc
ASTC_3D_HDR	16	GLES3: GL_OES_texture_compression_astc
ASTC_2D_NARROW_UNORM	16	GLES3: GL_EXT_texture_compression_astc_decode_mode	VK_EXT_astc_decode_mode
ASTC_2D_NARROW_RGBE	16	GLES3: GL_EXT_texture_compression_astc_decode_mode	VK_EXT_astc_decode_mode
ASTC_3D_NARROW_UNORM	16
ASTC_3D_NARROW_RGBE	16