Limit GL_TEXTURE_RECTANGLE filtering to bilinear.
Adds a clamp for GrTexture filtering that can be set by a subclass at construction. The clamping is performed by GrTextureParams. GrGLTexture limits filtering to bilinear for rectangle and external textures.
Also moves samplerType() to GrTexturePriv from GrTexture.
BUG=skia:5932
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4352
Change-Id: I1f023d4f4133e7eb393367580c0558257e56c8db
Reviewed-on: https://skia-review.googlesource.com/4352
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Chris Dalton <csmartdalton@google.com>
10 files changed