Fix blendable FP32 texture caps on ES2 contexts

Although the EXT_float_blend extension is defined only for ES 3.0+, ANGLE exposes it on ES 2.0 client contexts. Bug: angleproject:4595 Change-Id: I7451062ed8b1ab4eb18a8c7c1d37ee7383c8ea4b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2172738 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Kenneth Russell <kbr@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

Fix blendable FP32 texture caps on ES2 contexts
1ae8d2dd · Alexey Knyazev · Commit Bot · 28300e6f · 1ae8d2dd
Commit 1ae8d2dd authored Apr 29, 2020 by Alexey Knyazev Committed by Commit Bot Jun 30, 2020
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formatutils.cpp src/libANGLE/formatutils.cpp +3 -1

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--- a/src/libANGLE/formatutils.cpp
+++ b/src/libANGLE/formatutils.cpp
@@ -324,7 +324,9 @@ static bool SizedFloatRGBARenderableSupport(const Version &clientVersion,

 static bool Float32BlendableSupport(const Version &clientVersion, const Extensions &extensions)
 {
-    return extensions.colorBufferFloat && extensions.floatBlend;
+    // EXT_float_blend may be exposed on ES2 client contexts. Ensure that RGBA32F is renderable.
+    return (extensions.colorBufferFloatRGBA || extensions.colorBufferFloat) &&
+           extensions.floatBlend;
 }

 InternalFormat::InternalFormat()