1 files changed, 143 insertions, 0 deletions
diff --git a/gfx/angle/src/tests/gl_tests/DiscardFramebufferEXTTest.cpp b/gfx/angle/src/tests/gl_tests/DiscardFramebufferEXTTest.cpp
new file mode 100755
index 000000000..1e09ed120
--- /dev/null
+++ b/gfx/angle/src/tests/gl_tests/DiscardFramebufferEXTTest.cpp
@@ -0,0 +1,143 @@
+//
+// Copyright 2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#include "test_utils/ANGLETest.h"
+
+using namespace angle;
+
+class DiscardFramebufferEXTTest : public ANGLETest
+{
+protected:
+    DiscardFramebufferEXTTest()
+    {
+        setWindowWidth(256);
+        setWindowHeight(256);
+        setConfigRedBits(8);
+        setConfigGreenBits(8);
+        setConfigBlueBits(8);
+        setConfigAlphaBits(8);
+        setConfigDepthBits(24);
+        setConfigStencilBits(8);
+    }
+};
+
+TEST_P(DiscardFramebufferEXTTest, ExtensionEnabled)
+{
+    EGLPlatformParameters platform = GetParam().eglParameters;
+
+    if (platform.renderer == EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE)
+    {
+        EXPECT_TRUE(extensionEnabled("EXT_discard_framebuffer"));
+    }
+    else
+    {
+        // Other platforms don't currently implement this extension
+        EXPECT_FALSE(extensionEnabled("EXT_discard_framebuffer"));
+    }
+}
+
+TEST_P(DiscardFramebufferEXTTest, DefaultFramebuffer)
+{
+    if (!extensionEnabled("EXT_discard_framebuffer"))
+    {
+        std::cout << "Test skipped because EXT_discard_framebuffer is not available." << std::endl;
+        return;
+    }
+
+    // These should succeed on the default framebuffer
+    const GLenum discards1[] = { GL_COLOR_EXT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards1);
+    EXPECT_GL_NO_ERROR();
+
+    const GLenum discards2[] = { GL_DEPTH_EXT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards2);
+    EXPECT_GL_NO_ERROR();
+
+    const GLenum discards3[] = { GL_STENCIL_EXT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards3);
+    EXPECT_GL_NO_ERROR();
+
+    const GLenum discards4[] = { GL_STENCIL_EXT, GL_COLOR_EXT, GL_DEPTH_EXT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 3, discards4);
+    EXPECT_GL_NO_ERROR();
+
+    // These should fail on the default framebuffer
+    const GLenum discards5[] = { GL_COLOR_ATTACHMENT0 };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards5);
+    EXPECT_GL_ERROR(GL_INVALID_ENUM);
+
+    const GLenum discards6[] = { GL_DEPTH_ATTACHMENT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards6);
+    EXPECT_GL_ERROR(GL_INVALID_ENUM);
+
+    const GLenum discards7[] = { GL_STENCIL_ATTACHMENT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards7);
+    EXPECT_GL_ERROR(GL_INVALID_ENUM);
+}
+
+TEST_P(DiscardFramebufferEXTTest, NonDefaultFramebuffer)
+{
+    if (!extensionEnabled("EXT_discard_framebuffer"))
+    {
+        std::cout << "Test skipped because EXT_discard_framebuffer is not available." << std::endl;
+        return;
+    }
+
+    GLuint tex2D;
+    GLuint framebuffer;
+
+    // Create a basic off-screen framebuffer
+    // Don't create a depth/stencil texture, to ensure that also works correctly
+    glGenTextures(1, &tex2D);
+    glGenFramebuffers(1, &framebuffer);
+    glBindTexture(GL_TEXTURE_2D, tex2D);
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, getWindowWidth(), getWindowHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex2D, 0);
+    ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
+
+    // These should fail on the non-default framebuffer
+    const GLenum discards1[] = { GL_COLOR_EXT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards1);
+    EXPECT_GL_ERROR(GL_INVALID_ENUM);
+
+    const GLenum discards2[] = { GL_DEPTH_EXT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards2);
+    EXPECT_GL_ERROR(GL_INVALID_ENUM);
+
+    const GLenum discards3[] = { GL_STENCIL_EXT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards3);
+    EXPECT_GL_ERROR(GL_INVALID_ENUM);
+
+    const GLenum discards4[] = { GL_STENCIL_EXT, GL_COLOR_EXT, GL_DEPTH_EXT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 3, discards4);
+    EXPECT_GL_ERROR(GL_INVALID_ENUM);
+
+    // These should succeed on the non-default framebuffer
+    const GLenum discards5[] = { GL_COLOR_ATTACHMENT0 };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards5);
+    EXPECT_GL_NO_ERROR();
+
+    const GLenum discards6[] = { GL_DEPTH_ATTACHMENT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards6);
+    EXPECT_GL_NO_ERROR();
+
+    const GLenum discards7[] = { GL_STENCIL_ATTACHMENT };
+    glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, discards7);
+    EXPECT_GL_NO_ERROR();
+}
+
+// Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against.
+ANGLE_INSTANTIATE_TEST(DiscardFramebufferEXTTest,
+                       ES2_D3D9(),
+                       ES2_D3D11(),
+                       ES2_D3D11_FL9_3(),
+                       ES2_OPENGL(),
+                       ES3_OPENGL(),
+                       ES2_OPENGLES(),
+                       ES3_OPENGLES());