Reset texture swizzle state to default after LUMA workaround

The copySubImage LUMA workaround sets special TEXTURE_SWIZZLE_RGBA values to work. However, it must reset this parameter back to the default state after the workaround completes. Bug: 1022080 Change-Id: I84870f1264311c106ebece1e6a37d5f92a1da28c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1904627Reviewed-by: Kenneth Russell <kbr@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>

Reset texture swizzle state to default after LUMA workaround
60a396a8 · Jonah Ryan-Davis · Commit Bot · 50919254 · 60a396a8
Commit 60a396a8 authored Nov 07, 2019 by Jonah Ryan-Davis Committed by Commit Bot Nov 08, 2019
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BlitGL.cpp src/libANGLE/renderer/gl/BlitGL.cpp +3 -0

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--- a/src/libANGLE/renderer/gl/BlitGL.cpp
+++ b/src/libANGLE/renderer/gl/BlitGL.cpp
@@ -1048,6 +1048,9 @@ angle::Result BlitGL::orphanScratchTextures(const gl::Context *context)
        gl::PixelUnpackState unpack;
        mStateManager->setPixelUnpackState(unpack);
        mStateManager->setPixelUnpackBuffer(nullptr);
+        GLint swizzle[4] = {GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA};
+        ANGLE_GL_TRY(context,
+                     mFunctions->texParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzle));
        ANGLE_GL_TRY(context, mFunctions->texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, 0, GL_RGBA,
                                                     GL_UNSIGNED_BYTE, nullptr));
    }