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Fix ETC1 support on iOS.

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iOS doesn't support the ETC1 GL format, but does support ETC2 which has
ETC1 support as well. We should probably default to ETC2 in any case.

Change-Id: Ifd34fc602a1227f76316a8e27cf5555605c66840
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/241045
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
This commit is contained in:
Jim Van Verth 2019-09-12 13:04:18 -04:00 committed by Skia Commit-Bot
parent f19510e320
commit c13030169f
1 changed files with 4 additions and 0 deletions
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4
src/gpu/gl/GrGLCaps.cpp
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@ -4078,6 +4078,10 @@ GrBackendFormat GrGLCaps::getBackendFormatFromCompressionType(
SkImage::CompressionType compressionType) const {
switch (compressionType) {
case SkImage::kETC1_CompressionType:
// if ETC2 is available default to that format
if (this->isFormatTexturable(GrGLFormat::kCOMPRESSED_RGB8_ETC2)) {
return GrBackendFormat::MakeGL(GR_GL_COMPRESSED_RGB8_ETC2, GR_GL_TEXTURE_2D);
}
return GrBackendFormat::MakeGL(GR_GL_COMPRESSED_ETC1_RGB8, GR_GL_TEXTURE_2D);
}
SK_ABORT("Invalid compression type");