Support blendable capability

Vulkan distinguishes between a texture format that can be used as a render target (VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT) and one that supports blending (VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT). This cl adds a blendable capability and sets it based on the appropriate bit. It also adds the check in GetFormatSupportBase(), but all uses of it are currently set to false. In terms of behavior, this cl should be noop. Bug: angleproject:4291 Change-Id: Ib151ac8ab7b69311b7fdef15ad87186d13e3ed78 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1999494 Commit-Queue: Alexis Hétu <sugoi@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

Support blendable capability
ddb99f21 · Alexis Hetu · Commit Bot · 50a69a14 · ddb99f21 · ddb99f21
Commit ddb99f21 authored Jan 14, 2020 by Alexis Hetu Committed by Commit Bot Jan 16, 2020
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Caps.cpp src/libANGLE/Caps.cpp +0 -0

Caps.h src/libANGLE/Caps.h +3 -0

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--- a/src/libANGLE/Caps.cpp
+++ b/src/libANGLE/Caps.cpp
--- a/src/libANGLE/Caps.h
+++ b/src/libANGLE/Caps.h
@@ -41,6 +41,9 @@ struct TextureCaps
    // Support for being used as a renderbuffer format, i.e. glFramebufferRenderbuffer
    bool renderbuffer = false;
+    // Support for blend modes while being used as a framebuffer attachment
+    bool blendable = false;
    // Set of supported sample counts, only guaranteed to be valid in ES3.
    SupportedSampleSet sampleCounts;