chromium/third_party/angle/src/tests/gl_tests/RobustBufferAccessBehaviorTest.cpp

//
// Copyright 2017 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.
//
// RobustBufferAccessBehaviorTest:
//   Various tests related for GL_KHR_robust_buffer_access_behavior.
//

#include "test_utils/ANGLETest.h"
#include "test_utils/gl_raii.h"
#include "util/EGLWindow.h"
#include "util/OSWindow.h"

#include <array>

usingnamespaceangle;

namespace
{

class RobustBufferAccessBehaviorTest : public ANGLETest<>
{ … };

// Test that static draw with out-of-bounds reads will not read outside of the data store of the
// buffer object and will not result in GL interruption or termination when
// GL_KHR_robust_buffer_access_behavior is supported.
TEST_P(RobustBufferAccessBehaviorTest, DrawElementsIndexOutOfRangeWithStaticDraw)
{ … }

// Test that dynamic draw with out-of-bounds reads will not read outside of the data store of the
// buffer object and will not result in GL interruption or termination when
// GL_KHR_robust_buffer_access_behavior is supported.
TEST_P(RobustBufferAccessBehaviorTest, DrawElementsIndexOutOfRangeWithDynamicDraw)
{ … }

// Test that vertex buffers are rebound with the correct offsets in subsequent calls in the D3D11
// backend.  http://crbug.com/837002
TEST_P(RobustBufferAccessBehaviorTest, D3D11StateSynchronizationOrderBug)
{ … }

// Covers drawing with a very large vertex range which overflows GLsizei. http://crbug.com/842028
TEST_P(RobustBufferAccessBehaviorTest, VeryLargeVertexCountWithDynamicVertexData)
{ … }

// Test that robust access works even if there's no data uploaded to the vertex buffer at all.
TEST_P(RobustBufferAccessBehaviorTest, NoBufferData)
{ … }

constexpr char kWebGLVS[] = …;

constexpr char kWebGLFS[] = …;

// Test buffer with interleaved (3+2) float vectors. Adapted from WebGL test
// conformance/rendering/draw-arrays-out-of-bounds.html
TEST_P(RobustBufferAccessBehaviorTest, InterleavedAttributes)
{ … }

// Tests redefining an empty buffer. Adapted from WebGL test
// conformance/rendering/draw-arrays-out-of-bounds.html
TEST_P(RobustBufferAccessBehaviorTest, EmptyBuffer)
{ … }

// Tests robust buffer access with dynamic buffer usage.
TEST_P(RobustBufferAccessBehaviorTest, DynamicBuffer)
{ … }

// Tests out of bounds read by divisor emulation due to a user-provided offset.
// Adapted from https://crbug.com/1285885.
TEST_P(RobustBufferAccessBehaviorTest, IndexOutOfBounds)
{ … }

// Similar to the test above but index is first within bounds then goes out of bounds.
TEST_P(RobustBufferAccessBehaviorTest, IndexGoingOutOfBounds)
{ … }

// Draw out-of-bounds beginning with the start offset passed in.
// Ensure that drawArrays flags either no error or INVALID_OPERATION. In the case of
// INVALID_OPERATION, no canvas pixels can be touched.  In the case of NO_ERROR, all written values
// must either be the zero vertex or a value in the vertex buffer.  See vsCheckOutOfBounds shader.
void DrawAndVerifyOutOfBoundsArrays(int first, int count)
{ … }

// Adapted from WebGL test
// conformance/rendering/out-of-bounds-array-buffers.html
// This test verifies that out-of-bounds array buffers behave according to spec.
TEST_P(RobustBufferAccessBehaviorTest, OutOfBoundsArrayBuffers)
{ … }

// Regression test for glBufferData with slightly increased size. Implementation may decided to
// reuse the buffer storage if underline storage is big enough (due to alignment, implementation may
// allocate more storage than data size.) This tests ensure it works correctly when this reuse
// happens.
TEST_P(RobustBufferAccessBehaviorTest, BufferDataWithIncreasedSize)
{ … }

// Similar to BufferDataWithIncreasedSize. But this time the buffer is bound to two VAOs. The change
// in the buffer should be picked up by both VAOs.
TEST_P(RobustBufferAccessBehaviorTest, BufferDataWithIncreasedSizeAndUseWithVAOs)
{ … }

// Prepare an element array buffer that indexes out-of-bounds beginning with the start index passed
// in. Ensure that drawElements flags either no error or INVALID_OPERATION. In the case of
// INVALID_OPERATION, no canvas pixels can be touched.  In the case of NO_ERROR, all written values
// must either be the zero vertex or a value in the vertex buffer.  See vsCheckOutOfBounds shader.
void DrawAndVerifyOutOfBoundsIndex(int startIndex)
{ … }

// Adapted from WebGL test
// conformance/rendering/out-of-bounds-index-buffers.html
// This test verifies that out-of-bounds index buffers behave according to spec.
TEST_P(RobustBufferAccessBehaviorTest, OutOfBoundsIndexBuffers)
{ … }

ANGLE_INSTANTIATE_TEST(…);

}  // namespace