Add texture base-level related tests
Bug: angleproject:4695
Bug: angleproject:4696
Bug: angleproject:4698
Bug: angleproject:4699
Bug: angleproject:4701
Change-Id: Ia49e2100851c029b1ae05bc1398528170d71c3cb
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2233402
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>
diff --git a/src/tests/gl_tests/FramebufferTest.cpp b/src/tests/gl_tests/FramebufferTest.cpp
index 86e24bb..3ae1fea 100644
--- a/src/tests/gl_tests/FramebufferTest.cpp
+++ b/src/tests/gl_tests/FramebufferTest.cpp
@@ -462,6 +462,33 @@
ExpectFramebufferCompleteOrUnsupported(GL_FRAMEBUFFER);
}
+TEST_P(FramebufferTest_ES3, TextureAttachmentMipLevelsReadBack)
+{
+ // http://anglebug.com/4695
+ ANGLE_SKIP_TEST_IF(IsVulkan());
+
+ GLFramebuffer framebuffer;
+ glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+
+ GLTexture texture;
+ glBindTexture(GL_TEXTURE_2D, texture);
+
+ const std::array<GLColor, 2 * 2> mip0Data = {GLColor::red, GLColor::red, GLColor::red,
+ GLColor::red};
+ const std::array<GLColor, 1 * 1> mip1Data = {GLColor::green};
+
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 4, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, mip0Data.data());
+ glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA8, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, mip1Data.data());
+
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 1);
+ glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 1);
+ EXPECT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER);
+
+ glClearColor(0, 0, 1.0f, 1.0f);
+ glClear(GL_COLOR_BUFFER_BIT);
+ EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::blue);
+}
+
// Test that passing an attachment COLOR_ATTACHMENTm where m is equal to MAX_COLOR_ATTACHMENTS
// generates an INVALID_OPERATION.
// OpenGL ES Version 3.0.5 (November 3, 2016), 4.4.2.4 Attaching Texture Images to a Framebuffer, p.