chromium/third_party/dawn/src/dawn/tests/end2end/IndexFormatTests.cpp

// Copyright 2017 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "dawn/tests/DawnTest.h"

#include "dawn/common/Assert.h"
#include "dawn/utils/ComboRenderPipelineDescriptor.h"
#include "dawn/utils/WGPUHelpers.h"

namespace dawn {
namespace {

constexpr uint32_t kRTSize = …;

class IndexFormatTest : public DawnTest { … };

// Test that the Uint32 index format is correctly interpreted
TEST_P(IndexFormatTest, Uint32) { … }

// Test that the Uint16 index format is correctly interpreted
TEST_P(IndexFormatTest, Uint16) { … }

// Test that the index format used is the format of the last set pipeline. This is to
// prevent a case in D3D12 where the index format would be captured from the last
// pipeline on SetIndexBuffer.
TEST_P(IndexFormatTest, ChangePipelineAfterSetIndexBuffer) { … }

// Test that setting the index buffer before the pipeline works, this is important
// for backends where the index format is passed inside the call to SetIndexBuffer
// because it needs to be done lazily (to query the format from the last pipeline).
TEST_P(IndexFormatTest, SetIndexBufferBeforeSetPipeline) { … }

// Test that index buffers of multiple formats can be used with a pipeline that
// doesn't use strip primitive topology.
TEST_P(IndexFormatTest, SetIndexBufferDifferentFormats) { … }

// Tests for primitive restart use vertices like in the drawing and draw the following
// indices: 0 1 2 PRIM_RESTART 3 4 5. Then A and B should be written but not C.
//      |--------------|
//      |      0---1   |
//      |       \ B|   |
//      |         \|   |
//      |  3   C   2   |
//      |  |\          |
//      |  |A \        |
//      |  4---5       |
//      |--------------|

class TriangleStripPrimitiveRestartTests : public IndexFormatTest { … };

// Test use of primitive restart with an Uint32 index format
TEST_P(TriangleStripPrimitiveRestartTests, Uint32PrimitiveRestart) { … }

// Same as the above test, but uses an OOB index to emulate primitive restart being disabled,
// causing point C to be written to.
TEST_P(TriangleStripPrimitiveRestartTests, Uint32WithoutPrimitiveRestart) { … }

// Test use of primitive restart with an Uint16 index format
TEST_P(TriangleStripPrimitiveRestartTests, Uint16PrimitiveRestart) { … }

// Tests for primitive restart use vertices like in the drawing and draw the following
// indices: 0 1 PRIM_RESTART 2 3. Then 1 and 2 should be written but not A.
//      |--------------|
//      |      3      0|
//      |      |      ||
//      |      |      ||
//      |      2  A   1|
//      |              |
//      |              |
//      |              |
//      |--------------|

class LineStripPrimitiveRestartTests : public IndexFormatTest { … };

TEST_P(LineStripPrimitiveRestartTests, Uint32PrimitiveRestart) { … }

// Same as the above test, but uses an OOB index to emulate primitive restart being disabled,
// causing point A to be written to.
TEST_P(LineStripPrimitiveRestartTests, Uint32WithoutPrimitiveRestart) { … }

TEST_P(LineStripPrimitiveRestartTests, Uint16PrimitiveRestart) { … }

DAWN_INSTANTIATE_TEST(IndexFormatTest,
                      D3D11Backend(),
                      D3D12Backend(),
                      MetalBackend(),
                      OpenGLBackend(),
                      OpenGLESBackend(),
                      VulkanBackend());
DAWN_INSTANTIATE_TEST(TriangleStripPrimitiveRestartTests,
                      D3D11Backend(),
                      D3D12Backend(),
                      MetalBackend(),
                      OpenGLBackend(),
                      OpenGLESBackend(),
                      VulkanBackend());
DAWN_INSTANTIATE_TEST(LineStripPrimitiveRestartTests,
                      D3D11Backend(),
                      D3D12Backend(),
                      MetalBackend(),
                      OpenGLBackend(),
                      OpenGLESBackend(),
                      VulkanBackend());

}  // anonymous namespace
}  // namespace dawn