Vulkan: Add test for filament gltf usage case

src/tests/gl_tests/FramebufferTest.cpp

@@ -2538,6 +2538,167 @@ TEST_P(FramebufferTest_ES3, SampleFromAttachedTextureWithDifferentLOD)
     EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
 }
 
+// Test render to a texture level that is excluded from [base_level, max_level]. This specific test
+// renders to an immutable texture at the level that is bigger than GL_TEXTURE_MAX_LEVEL. The
+// texture itself has not been initialized with any data before rendering (TexSubImage call may
+// initialize a VkImage object).
+TEST_P(FramebufferTest_ES3, RenderAndInvalidateImmutableTextureWithBeyondMaxLevel)
+{
+    // ToDo: https://issuetracker.google.com/181800403
+    ANGLE_SKIP_TEST_IF(IsVulkan() || IsMetal());
+
+    constexpr GLuint kLevel0Size = 4;
+    constexpr GLuint kLevel1Size = kLevel0Size / 2;
+
+    GLTexture colorTexture;
+    glBindTexture(GL_TEXTURE_2D, colorTexture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexStorage2D(GL_TEXTURE_2D, 2, GL_RGBA8, kLevel0Size, kLevel0Size);
+    // set max_level to 0
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
+
+    // Attach level 1 to a FBO
+    GLFramebuffer framebuffer;
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorTexture, 1);
+    ASSERT_GL_NO_ERROR();
+    ASSERT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER);
+
+    // Render to FBO
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    const GLenum discard[] = {GL_COLOR_ATTACHMENT0};
+    glInvalidateFramebuffer(GL_FRAMEBUFFER, 1, discard);
+    glViewport(0, 0, kLevel1Size, kLevel1Size);
+    glScissor(0, 0, kLevel1Size, kLevel1Size);
+    glEnable(GL_CULL_FACE);
+    glCullFace(GL_BACK);
+    glDisable(GL_BLEND);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+    ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), essl3_shaders::fs::Red());
+    glUseProgram(program);
+    drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f);
+
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_BLEND);
+    glDisable(GL_SCISSOR_TEST);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+
+    ASSERT_GL_NO_ERROR();
+    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
+}
+
+// Test render to a texture level that is excluded from [base_level, max_level]. This specific test
+// renders to an immutable texture at the level that is bigger than GL_TEXTURE_MAX_LEVEL. The
+// texture itself has been initialized with data before rendering.
+TEST_P(FramebufferTest_ES3, RenderAndInvalidateImmutableTextureWithSubImageWithBeyondMaxLevel)
+{
+    // ToDo: https://issuetracker.google.com/181800403
+    ANGLE_SKIP_TEST_IF(IsVulkan() || IsMetal());
+
+    constexpr GLuint kLevel0Size = 4;
+    constexpr GLuint kLevel1Size = kLevel0Size / 2;
+    std::array<GLColor, kLevel0Size * kLevel0Size> gData;
+
+    GLTexture colorTexture;
+    glBindTexture(GL_TEXTURE_2D, colorTexture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexStorage2D(GL_TEXTURE_2D, 2, GL_RGBA8, kLevel0Size, kLevel0Size);
+    // set max_level to 0
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
+    // Initialize with TexSubImage call
+    gData.fill(GLColor::blue);
+    glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, kLevel0Size, kLevel0Size, GL_RGBA, GL_UNSIGNED_BYTE,
+                    gData.data());
+
+    // Attach level 1 to a FBO
+    GLFramebuffer framebuffer;
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorTexture, 1);
+    ASSERT_GL_NO_ERROR();
+    ASSERT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER);
+
+    // Render to FBO
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    const GLenum discard[] = {GL_COLOR_ATTACHMENT0};
+    glInvalidateFramebuffer(GL_FRAMEBUFFER, 1, discard);
+    glViewport(0, 0, kLevel1Size, kLevel1Size);
+    glScissor(0, 0, kLevel1Size, kLevel1Size);
+    glEnable(GL_CULL_FACE);
+    glCullFace(GL_BACK);
+    glDisable(GL_BLEND);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+    ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), essl3_shaders::fs::Red());
+    glUseProgram(program);
+    drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f);
+
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_BLEND);
+    glDisable(GL_SCISSOR_TEST);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+
+    ASSERT_GL_NO_ERROR();
+    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
+}
+
+// Test render to a texture level that is excluded from [base_level, max_level]. This specific test
+// renders to an immutable texture at the level that is smaller than GL_TEXTURE_BASE_LEVEL. The
+// texture itself has been initialized with data before rendering. Filament is using it this way
+// https://issuetracker.google.com/181800403.
+TEST_P(FramebufferTest_ES3, RenderAndInvalidateImmutableTextureWithBellowBaseLevelLOD)
+{
+    // ToDo: https://issuetracker.google.com/181800403
+    ANGLE_SKIP_TEST_IF(IsVulkan() || IsMetal());
+
+    constexpr GLuint kLevel0Size = 4;
+    constexpr GLuint kLevel1Size = kLevel0Size / 2;
+    std::array<GLColor, kLevel0Size * kLevel0Size> gData;
+
+    GLTexture colorTexture;
+    glBindTexture(GL_TEXTURE_2D, colorTexture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexStorage2D(GL_TEXTURE_2D, 2, GL_RGBA8, kLevel0Size, kLevel0Size);
+    // set base_level to 1
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 1);
+    gData.fill(GLColor::blue);
+    glTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, kLevel1Size, kLevel1Size, GL_RGBA, GL_UNSIGNED_BYTE,
+                    gData.data());
+
+    // Attach level 0 to a FBO
+    GLFramebuffer framebuffer;
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorTexture, 0);
+    ASSERT_GL_NO_ERROR();
+    ASSERT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER);
+
+    // Render to FBO
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    const GLenum discard[] = {GL_COLOR_ATTACHMENT0};
+    glInvalidateFramebuffer(GL_FRAMEBUFFER, 1, discard);
+    glViewport(0, 0, kLevel0Size, kLevel0Size);
+    glScissor(0, 0, kLevel0Size, kLevel0Size);
+    glEnable(GL_CULL_FACE);
+    glCullFace(GL_BACK);
+    glDisable(GL_BLEND);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+    ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Simple(), essl3_shaders::fs::Red());
+    glUseProgram(program);
+    drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f);
+
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_BLEND);
+    glDisable(GL_SCISSOR_TEST);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+
+    ASSERT_GL_NO_ERROR();
+    EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::red);
+}
+
 // Covers a bug in ANGLE's Vulkan back-end. Our VkFramebuffer cache would in some cases forget to
 // check the draw states when computing a cache key.
 TEST_P(FramebufferTest_ES3, DisabledAttachmentRedefinition)