Fix feedback loop in ImageTest.SourceRenderbufferTargetTexture*

This test would make a renderbuffer as an EGLImage source and a texture
as the target. It would then try to verify the data in the texture by
sampling but the renderbuffer was currently bound to the framebuffer
creating a feedback loop.

Bug: angleproject:418022112
Change-Id: I456eb541c84d98d99e6b8d8be817ce67d7b1d519
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6556610
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

Author: vonture

src/tests/angle_end2end_tests_expectations.txt

@@ -1695,7 +1695,6 @@ b/292285899 PIXEL4ORXL GLES : EGLSurfaceTest.DestroyAndRecreateWhileCurrent/* =
 404958320 WIN NVIDIA VULKAN : BlitFramebufferTest.BlitSmallColorLargeDepthAttachments/* = SKIP
 
 // EGLImage colorspace renderbuffer failures on NVIDIA, INTEL and ANDROID
-40644776 D3D11                : ImageTest.SourceRenderbufferTargetTexture* = SKIP
 40644776 D3D11                : ImageTestES3.SourceRenderbufferTargetTextureExternalESSL3* = SKIP
 40644776 WIN INTEL VULKAN     : ImageTest.SourceRenderbufferTargetTexture* = SKIP
 40644776 WIN INTEL VULKAN     : ImageTestES3.SourceRenderbufferTargetTextureExternalESSL3* = SKIP

src/tests/gl_tests/ImageTest.cpp

@@ -7155,6 +7155,7 @@ void ImageTest::SourceRenderbufferTargetTexture_helper(const EGLint *attribs)
     glClearColor(kSrgbColor[0] / 255.0f, kSrgbColor[1] / 255.0f, kSrgbColor[2] / 255.0f,
                  kSrgbColor[3] / 255.0f);
     glClear(GL_COLOR_BUFFER_BIT);
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
     ASSERT_GL_NO_ERROR();
 
     // Create the target
@@ -7200,6 +7201,7 @@ void ImageTest::SourceRenderbufferTargetTextureExternal_helper(const EGLint *att
     glClearColor(kSrgbColor[0] / 255.0f, kSrgbColor[1] / 255.0f, kSrgbColor[2] / 255.0f,
                  kSrgbColor[3] / 255.0f);
     glClear(GL_COLOR_BUFFER_BIT);
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
     ASSERT_GL_NO_ERROR();
 
     // Create the target