- OpenGL ES 3.0 Programming Guide 2nd Edition 2nd Edition
- GitHub - KhronosGroup/OpenGL-Refpages OpenGL and OpenGL ES.
- OpenGL ES Apple Developer Documentation
- OpenGL、OpenGL ESリファレンス一覧 - 強火で進め - はてなダイアリー
OpenGL ES 3.0 Programming Guide 2nd Edition 2nd Edition
If you wish to render the full screen through a shader, and not just a single sprite or background, you will need to set up a surface to catch the current view, and then pass that through to the shader (see Surfaces for more information).
GitHub - KhronosGroup/OpenGL-Refpages OpenGL and OpenGL ES.
NOTES: Shaders, like anything related to drawing, can only be used in the draw event.
OpenGL ES Apple Developer Documentation
It is also worth noting that if you are trying to use a colour value in a shader and the object has no texture, the results will turn out black.
OpenGL、OpenGL ESリファレンス一覧 - 強火で進め - はてなダイアリー
If the shader you are using has input values, these are set using the uniform functions.
Opengl es reference manual:
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