the main reason for doing this is so that we can have
access to informations about a texture (like its dimension)
close to where we generate and use shaders in ES 2.0.
Previously, there wasn't any way to get to a texture's size
from a RenderEngine implementation.
Bug: 8679321
Change-Id: I388b338a70d07e3e8177dde248710ea1e4c82dff
just ensure the alpha value is 1.0 in the opaque case
when reading the color from the texture or the
global color.
Bug: 8679321
Change-Id: Ia38b30e97c3bce5a2d534a40c0d66e0bfc3ea40d
- turns out fragment shaders don't have default precision by default
- GLES 1.x extensions that became core in GLES 2.0 don't always work
as extensions in GLES 2.0 (!)
Bug: 8679321
Change-Id: I5a4a93e158247910399325a965af5d2e3bbece9b
