| Name |
| |
| EXT_texture_sRGB_RG8 |
| |
| Name Strings |
| |
| GL_EXT_texture_sRGB_RG8 |
| |
| Contributors |
| |
| Sam Holmes |
| Maurice Ribble |
| Tobias Hector |
| Jan-Harald Fredriksen |
| Dylan Perks |
| Contributors to EXT_texture_sRGB_R8, on which this is based. |
| |
| Contact |
| |
| Tobias Hector (tobias.hector 'at' imgtec.com) |
| |
| Status |
| |
| Complete. |
| |
| Version |
| |
| Last Modified Date: December 11, 2020 |
| Revision: 4 |
| |
| Number |
| |
| OpenGL ES Extension #223 |
| OpenGL Extension #555 |
| |
| Dependencies |
| |
| OpenGL ES 3.0 or OpenGL 1.2 is required. |
| |
| This extension is written against the OpenGL ES 3.1 and |
| OpenGL 4.6 (Core Profile) specifications. |
| |
| This extension interacts with ARB_texture_view. |
| |
| This extension interacts with EXT_texture_view. |
| |
| This extension interacts with OES_texture_view. |
| |
| This extension interacts with ARB_direct_state_access. |
| |
| Overview |
| |
| This extension introduces SRG8_EXT as an acceptable internal format. |
| This allows efficient sRGB sampling for source images stored with 2 |
| channels. |
| |
| New Procedures and Functions |
| |
| None |
| |
| New Tokens |
| |
| Accepted by the <internalformat> parameters of TexImage3D, TexImage2D, |
| TexImage1D, TexStorage3D, TexStorage2D, TexStorage1D, TextureStorage3D, |
| TextureStorage2D, and TextureStorage1D: |
| |
| SRG8_EXT 0x8FBE |
| |
| Additions to Chapter 8 of the OpenGL ES 3.1 Specification (Textures and |
| Samplers) |
| |
| The following table entry is added to Table 8.2 (Valid combinations of |
| format, type and sized internalformat): |
| |
| Format Type External Bytes per Pixel Internal Format |
| ------ ---- ------------------------ --------------- |
| RG UNSIGNED_BYTE 2 SRG8_EXT |
| |
| The following table entry is added to Table 8.13 (Correspondence of sized |
| internal color formats to base internal formats): |
| |
| Sized Internal Format Base Internal Format R G B A S CR TF Req. rend. Req. tex. |
| --------------------- -------------------- - - - - - -- -- ---------- --------- |
| SRG8_EXT RG 8 8 X X |
| |
| The following table entry is added to Table 8.24 (sRGB texture internal |
| formats): |
| |
| Internal Format |
| --------------- |
| SRG8_EXT |
| |
| Additions to Chapter 8 of the OpenGL 4.6 (Core Profile) Specification |
| (Textures and Samplers) |
| |
| The following table entry is added to Table 8.2 (Valid combinations of |
| format, type and sized internalformat): |
| |
| Format Type External Bytes per Pixel Internal Format |
| ------ ---- ------------------------ --------------- |
| RG UNSIGNED_BYTE 2 SRG8_EXT |
| |
| The following table entry is added to Table 8.12 (Correspondence of sized |
| internal color formats to base internal formats): |
| |
| Sized Internal Format Base Internal Format R G B A S CR TF Req. rend. Req. tex. |
| --------------------- -------------------- - - - - - -- -- ---------- --------- |
| SRG8_EXT RG 8 8 X X |
| |
| The following table entry is added to Table 8.22 (Compatible internal |
| formats for TextureView): |
| |
| Class Internal formats |
| --------------- ---------------- |
| VIEW_CLASS_16_BITS SRG8_EXT |
| |
| The following table entry is added to Table 8.24 (sRGB texture internal |
| formats): |
| |
| Internal Format |
| --------------- |
| SRG8_EXT |
| |
| Dependencies on OpenGL |
| |
| If OpenGL is not supported, ignore all references to 1D textures, |
| including TexImage1D, TexStorage1D, and TextureStorage1D. |
| |
| Dependencies on OpenGL 4.5 and ARB_direct_state_access |
| |
| If neither OpenGL 4.5 nor ARB_direct_state_access are supported, |
| ignore all references to TextureStorage3D, TextureStorage2D, and |
| TextureStorage1D. |
| |
| Dependencies on ARB_texture_view |
| |
| If ARB_texture_view is supported, add SRG8_EXT to the Internal formats |
| column of the VIEW_CLASS_16_BITS row in Table 3.X.2. |
| |
| Dependencies on EXT_texture_view |
| |
| If EXT_texture_view is supported, add SRG8_EXT to the Internal formats |
| column of the VIEW_CLASS_16_BITS row in Table 8.X.2. |
| |
| Dependencies on OES_texture_view |
| |
| If OES_texture_view is supported, add SRG8_EXT to the Internal formats |
| column of the VIEW_CLASS_16_BITS row in Table 8.X.2. |
| |
| Errors |
| |
| None |
| |
| New State |
| |
| None |
| |
| Revision History |
| |
| #01 2/5/2015 Tobias Hector Initial revision. |
| #02 2/5/2015 Tobias Hector Fixed Table 8.13 entry and whitespace issues. |
| #03 2/17/2015 Tobias Hector Fixed Table 8.2 entry to correctly say 2 bytes. |
| #04 12/11/2020 Dylan Perks Add GL interactions and register for GL |
