| Name |
| |
| EXT_texture_sRGB_R8 |
| |
| Name Strings |
| |
| GL_EXT_texture_sRGB_R8 |
| |
| Contributors |
| |
| Sam Holmes |
| Maurice Ribble |
| Daniel Koch |
| Tobias Hector |
| Jan-Harald Fredriksen |
| Sourav Parmar |
| |
| Contact |
| |
| Maurice Ribble (mribble 'at' qti.qualcomm.com) |
| |
| Status |
| |
| Complete. |
| |
| Version |
| |
| Last Modified Date: November 30, 2018 |
| Revision: 5 |
| |
| Number |
| |
| OpenGL ES Extension #221 |
| OpenGL Extension #594 |
| |
| 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 SR8_EXT as an acceptable internal format. |
| This allows efficient sRGB sampling for source images stored as a separate |
| texture per channel. |
| |
| New Procedures and Functions |
| |
| None |
| |
| New Tokens |
| |
| Accepted by the <internalformat> parameters of TexImage3D, TexImage2D, |
| TexImage1D, TexStorage3D, TexStorage2D, TexStorage1D, TextureStorage3D, |
| TextureStorage2D, and TextureStorage1D: |
| |
| SR8_EXT 0x8FBD |
| |
| Additions to Chapter 8 of the OpenGL ES 3.1 Specification [GL 4.6 core |
| 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 |
| ------ ---- ------------------------ --------------- |
| RED UNSIGNED_BYTE 1 SR8_EXT |
| |
| The following table entry is added to Table 8.13 [8.12 in the GL 4.6 core |
| profile] (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. |
| --------------------- -------------------- - - - - - -- -- ---------- --------- |
| SR8_EXT RED 8 X X |
| |
| The following table entry is added to Table 8.22 in the GL 4.6 core profile |
| (Compatible internal formats for TextureView): |
| |
| Class Internal formats |
| --------------- ---------------- |
| VIEW_CLASS_8_BITS SR8_EXT |
| |
| The following table entry is added to Table 8.24 [8.24 in the GL 4.6 core |
| profile] (sRGB texture internal formats): |
| |
| Internal Format |
| --------------- |
| SR8_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 SR8_EXT to the Internal formats |
| column of the VIEW_CLASS_8_BITS row in Table 3.X.2. |
| |
| Dependencies on EXT_texture_view |
| |
| If EXT_texture_view is supported, add SR8_EXT to the Internal formats |
| column of the VIEW_CLASS_8_BITS row in Table 8.X.2. |
| |
| Dependencies on OES_texture_view |
| |
| If OES_texture_view is supported, add SR8_EXT to the Internal formats |
| column of the VIEW_CLASS_8_BITS row in Table 8.X.2. |
| |
| Errors |
| |
| None |
| |
| New State |
| |
| None |
| |
| Revision History |
| |
| |
| Rev Date Author Description |
| ---- ---------- -------------- --------------------------------- |
| 1 1/9/2015 Sam Holmes Initial revision. |
| 2 1/21/2015 Maurice Ribble Cleanup minor issues |
| 3 1/22/2015 Tobias Hector Removed "GL_" prefix and somewhat confusing version language. |
| 4 1/28/2015 Sam Holmes Remove redundant specification of errors and clean up internal format name. |
| 5 11/30/2018 Sourav Parmar Add GL interactions and register for GL. |