| Name |
| |
| EXT_texture_format_BGRA8888 |
| |
| Name Strings |
| |
| GL_EXT_texture_format_BGRA8888 |
| |
| Notice |
| |
| Copyright Imagination Technologies Limited, 2005. |
| |
| Contact |
| |
| Imagination Technologies |
| |
| Status |
| |
| Shipping |
| |
| Version |
| |
| 1.3, 12 September 2016 |
| |
| Number |
| |
| OpenGL ES Extension #51 |
| |
| Dependencies |
| |
| The extension is written against the OpenGLES 1.0 Specification, |
| which in turn is based OpenGL 1.3. Thus this spec is effectively |
| written against OpenGL 1.3 but does not address sections explicitly |
| removed or reduced by OpenGL-ES 1.0. |
| |
| This extension has interactions with the OpenGL ES 2.0 API. |
| |
| Overview |
| |
| This extension provides an additional format and type combination |
| for use when specifying texture data. The current allowed combinations |
| are: |
| |
| Internal Format External Format Type Bytes per Pixel |
| --------------- --------------- ---- --------------- |
| RGBA RGBA UNSIGNED_BYTE 4 |
| RGB RGB UNSIGNED_BYTE 3 |
| RGBA RGBA UNSIGNED_SHORT_4_4_4_4 2 |
| RGBA RGBA UNSIGNED_SHORT_5_5_5_1 2 |
| RGB RGB UNSIGNED_SHORT_5_6_5 2 |
| LUMINANCE_ALPHA LUMINANCE_ALPHA UNSIGNED_BYTE 2 |
| LUMINANCE LUMINANCE UNSIGNED_BYTE 1 |
| ALPHA ALPHA UNSIGNED_BYTE 1 |
| |
| |
| This table is extended to include format BGRA_EXT and type UNSIGNED_BYTE: |
| |
| Internal Format External Format Type Bytes per Pixel |
| --------------- --------------- ---- --------------- |
| BGRA_EXT BGRA_EXT UNSIGNED_BYTE 4 |
| RGBA RGBA UNSIGNED_BYTE 4 |
| RGB RGB UNSIGNED_BYTE 3 |
| RGBA RGBA UNSIGNED_SHORT_4_4_4_4 2 |
| RGBA RGBA UNSIGNED_SHORT_5_5_5_1 2 |
| RGB RGB UNSIGNED_SHORT_5_6_5 2 |
| LUMINANCE_ALPHA LUMINANCE_ALPHA UNSIGNED_BYTE 2 |
| LUMINANCE LUMINANCE UNSIGNED_BYTE 1 |
| ALPHA ALPHA UNSIGNED_BYTE 1 |
| |
| This format is renderable in versions of OpenGL ES from 2.0 onwards. |
| |
| IP Status |
| |
| Unknown |
| |
| Issues |
| |
| None. |
| |
| New Procedures and Functions |
| |
| None. |
| |
| New Tokens |
| |
| Accepted by the <format> and <internalformat> parameters of TexImage2D |
| and the <format> parameter of TexSubImage2D: |
| |
| GL_BGRA_EXT 0x80E1 |
| |
| Additions to Chapter 2 of the OpenGL 1.3 Specification (OpenGL Operation) |
| |
| None |
| |
| Additions to Chapter 3 of the OpenGL 1.3 Specification (Rasterization) |
| |
| None |
| |
| Additions to Chapter 4 of the OpenGL 1.3 Specification (Per-Fragment Operations and the Frame Buffer) |
| |
| None |
| |
| Additions to Chapter 5 of the OpenGL 1.3 Specification (Special Functions) |
| |
| None |
| |
| Additions to Chapter 6 of the OpenGL 1.3 Specification (State and State Requests) |
| |
| None |
| |
| Additions to the GLX / WGL / AGL Specifications |
| |
| None |
| |
| GLX Protocol |
| |
| None |
| |
| Errors |
| |
| None |
| |
| New State |
| |
| None |
| |
| New Implementation Dependent State |
| |
| None |
| |
| Interactions with the OpenGL ES 2.0 specification |
| |
| Add the following entry to Table 4.5: Renderbuffer image formats, |
| showing their renderable type (color-, depth-, or stencil-renderable) |
| and the number of bits each format contains for color (R, G, B, A), |
| depth (D), and stencil (S) components: |
| |
| |-----------------|------------------|------|------|------|------|------|------| |
| | Sized | Renderable | R | G | B | A | D | S | |
| | Internal Format | Type | bits | bits | bits | bits | bits | bits | |
| |-----------------|------------------|------|------|------|------|------|------| |
| | GL_BGRA_EXT | color-renderable | 8 | 8 | 8 | 8 | | | |
| |-----------------|------------------|------|------|------|------|------|------| |
| |
| Revision History |
| |
| 0.1, 26/04/2005 sks: Initial revision. |
| 1.0, 08/05/2005 gdc: Final revision. |
| 1.1, 19/03/2009 Jon Leech: add extension number and fix tabbing / |
| whitespace issues. |
| 1.2, 26/10/2009 Benj Lipchak: add EXT suffix to BGRA token. |
| 1.3, 12/09/2016 Tobias Hector: Added interaction with ES 2.0 (made it renderable). |
| Also made revision dates use the same (dd/mm/yyyy) format. |