| Name |
| QCOM_YUV_texture_gather |
| |
| Name Strings |
| |
| GL_QCOM_YUV_texture_gather |
| |
| Contact |
| |
| Jeff Leger ( jleger 'at' qti.qualcomm.com) |
| |
| Contributors |
| |
| Jeff Leger, Qualcomm |
| |
| |
| Status |
| |
| Complete |
| |
| Version |
| |
| Last Modified Date: October 18, 2018 |
| Revision: 1 |
| |
| Number |
| |
| OpenGL ES Extension #307 |
| |
| |
| Dependencies |
| |
| Requires OpenGL ES 3.0 |
| Requires GL_EXT_YUV_target |
| Requires EXT_gpu_shader5 |
| |
| |
| Overview |
| |
| Extension EXT_gpu_shader5 introduced the texture gather built-in functions. |
| Extension EXT_YUV_target adds the ability to sample from YUV textures, but |
| does not include gather functions. This extension allows gather function |
| to be used in combination with the YUV textures exposed in EXT_YUV_target. |
| |
| IP Status |
| |
| No known IP claims. |
| |
| New Procedures and Functions |
| |
| None |
| |
| New Tokens |
| |
| None |
| |
| Modifications to The OpenGL ES Shading Language Specification, Version 3.00, |
| dated 29 January 2016. |
| |
| Including the following line in a shader can be used to control the |
| language features described in this extension: |
| |
| #extension QCOM_YUV_texture_gather : <behavior> |
| |
| where <behavior> is as specified in section 3.4. |
| |
| A new preprocessor #define is added to the OpenGL ES Shading Language: |
| |
| #define QCOM_YUV_texture_gather 1 |
| |
| |
| Add to the list of texture gather functions as introduced with EXT_gpu_shader5 |
| and core functionality in ESSL 3.1 the following additional function: |
| |
| vec4 textureGather(__samplerExternal2DY2YEXT sampler, vec2 P [, int comp] ) |
| |
| Errors |
| |
| None. |
| |
| New State |
| |
| None. |
| |
| New Implementation Dependent State |
| |
| None |
| |
| Issues |
| |
| None. |
| |
| Revision History |
| |
| Rev. Date Author Changes |
| ---- ---------- -------- ----------------------------------------- |
| 1 2018-10-18 jleger initial version |
