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// Copyright 2020 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/unittests/validation/ValidationTest.h"
#include "dawn/utils/ComboRenderBundleEncoderDescriptor.h"
#include "dawn/utils/ComboRenderPipelineDescriptor.h"
#include "dawn/utils/WGPUHelpers.h"
namespace dawn {
namespace {
class IndexBufferValidationTest : public ValidationTest {
protected:
wgpu::RenderPipeline MakeTestPipeline(wgpu::IndexFormat format,
wgpu::PrimitiveTopology primitiveTopology) {
wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, R"(
@vertex fn main() -> @builtin(position) vec4f {
return vec4f(0.0, 0.0, 0.0, 1.0);
})");
wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"(
@fragment fn main() -> @location(0) vec4f {
return vec4f(0.0, 1.0, 0.0, 1.0);
})");
utils::ComboRenderPipelineDescriptor descriptor;
descriptor.vertex.module = vsModule;
descriptor.cFragment.module = fsModule;
descriptor.primitive.topology = primitiveTopology;
descriptor.primitive.stripIndexFormat = format;
descriptor.cTargets[0].format = wgpu::TextureFormat::RGBA8Unorm;
return device.CreateRenderPipeline(&descriptor);
}
};
// Test that IndexFormat::Undefined is disallowed.
TEST_F(IndexBufferValidationTest, UndefinedIndexFormat) {
wgpu::BufferDescriptor bufferDesc;
bufferDesc.usage = wgpu::BufferUsage::Index;
bufferDesc.size = 256;
wgpu::Buffer buffer = device.CreateBuffer(&bufferDesc);
PlaceholderRenderPass renderPass(device);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(buffer, wgpu::IndexFormat::Undefined);
pass.End();
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Test that an invalid index format is disallowed.
TEST_F(IndexBufferValidationTest, InvalidIndexFormat) {
wgpu::BufferDescriptor bufferDesc;
bufferDesc.usage = wgpu::BufferUsage::Index;
bufferDesc.size = 256;
wgpu::Buffer buffer = device.CreateBuffer(&bufferDesc);
PlaceholderRenderPass renderPass(device);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(buffer, static_cast<wgpu::IndexFormat>(404));
pass.End();
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Test that for OOB validation of index buffer offset and size.
TEST_F(IndexBufferValidationTest, IndexBufferOffsetOOBValidation) {
wgpu::BufferDescriptor bufferDesc;
bufferDesc.usage = wgpu::BufferUsage::Index;
bufferDesc.size = 256;
wgpu::Buffer buffer = device.CreateBuffer(&bufferDesc);
PlaceholderRenderPass renderPass(device);
// Control case, using the full buffer, with or without an explicit size is valid.
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
// Explicit size
pass.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 0, 256);
// Implicit size
pass.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 0, wgpu::kWholeSize);
pass.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 256 - 4, wgpu::kWholeSize);
pass.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 4, wgpu::kWholeSize);
// Implicit size of zero
pass.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 256, wgpu::kWholeSize);
pass.End();
encoder.Finish();
}
// Bad case, offset + size is larger than the buffer
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 4, 256);
pass.End();
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Bad case, size is 0 but the offset is larger than the buffer
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 256 + 4, 0);
pass.End();
ASSERT_DEVICE_ERROR(encoder.Finish());
}
utils::ComboRenderBundleEncoderDescriptor renderBundleDesc = {};
renderBundleDesc.colorFormatCount = 1;
renderBundleDesc.cColorFormats[0] = wgpu::TextureFormat::RGBA8Unorm;
// Control case, using the full buffer, with or without an explicit size is valid.
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
// Explicit size
encoder.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 0, 256);
// Implicit size
encoder.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 0, wgpu::kWholeSize);
encoder.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 256 - 4, wgpu::kWholeSize);
encoder.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 4, wgpu::kWholeSize);
// Implicit size of zero
encoder.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 256, wgpu::kWholeSize);
encoder.Finish();
}
// Bad case, offset + size is larger than the buffer
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 4, 256);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Bad case, size is 0 but the offset is larger than the buffer
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(buffer, wgpu::IndexFormat::Uint32, 256 + 4, 0);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Test that formats given when setting an index buffers must match the format specified on the
// pipeline for strip primitive topologies.
TEST_F(IndexBufferValidationTest, IndexBufferFormatMatchesPipelineStripFormat) {
wgpu::RenderPipeline pipeline32 =
MakeTestPipeline(wgpu::IndexFormat::Uint32, wgpu::PrimitiveTopology::TriangleStrip);
wgpu::RenderPipeline pipeline16 =
MakeTestPipeline(wgpu::IndexFormat::Uint16, wgpu::PrimitiveTopology::LineStrip);
wgpu::RenderPipeline pipelineUndef =
MakeTestPipeline(wgpu::IndexFormat::Undefined, wgpu::PrimitiveTopology::LineStrip);
wgpu::Buffer indexBuffer =
utils::CreateBufferFromData<uint32_t>(device, wgpu::BufferUsage::Index, {0, 1, 2});
utils::ComboRenderBundleEncoderDescriptor renderBundleDesc = {};
renderBundleDesc.colorFormatCount = 1;
renderBundleDesc.cColorFormats[0] = wgpu::TextureFormat::RGBA8Unorm;
// Expected to fail because pipeline and index formats don't match.
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint16);
encoder.SetPipeline(pipeline32);
encoder.DrawIndexed(3);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32);
encoder.SetPipeline(pipeline16);
encoder.DrawIndexed(3);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Expected to succeed because pipeline and index formats match.
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint16);
encoder.SetPipeline(pipeline16);
encoder.DrawIndexed(3);
encoder.Finish();
}
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32);
encoder.SetPipeline(pipeline32);
encoder.DrawIndexed(3);
encoder.Finish();
}
// Expected to fail because pipeline doesn't specify an index format.
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint16);
encoder.SetPipeline(pipelineUndef);
encoder.DrawIndexed(3);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32);
encoder.SetPipeline(pipelineUndef);
encoder.DrawIndexed(3);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Expected to succeed because non-indexed draw calls don't require a pipeline index format.
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetPipeline(pipelineUndef);
encoder.Draw(3);
encoder.Finish();
}
}
// Check that the index buffer must have the Index usage.
TEST_F(IndexBufferValidationTest, InvalidUsage) {
wgpu::Buffer indexBuffer =
utils::CreateBufferFromData<uint32_t>(device, wgpu::BufferUsage::Index, {0, 1, 2});
wgpu::Buffer copyBuffer =
utils::CreateBufferFromData<uint32_t>(device, wgpu::BufferUsage::CopySrc, {0, 1, 2});
PlaceholderRenderPass renderPass(device);
// Control case: using the index buffer is valid.
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32);
pass.End();
encoder.Finish();
}
// Error case: using the copy buffer is an error.
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(copyBuffer, wgpu::IndexFormat::Uint32);
pass.End();
ASSERT_DEVICE_ERROR(encoder.Finish());
}
utils::ComboRenderBundleEncoderDescriptor renderBundleDesc = {};
renderBundleDesc.colorFormatCount = 1;
renderBundleDesc.cColorFormats[0] = wgpu::TextureFormat::RGBA8Unorm;
// Control case: using the index buffer is valid.
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32);
encoder.Finish();
}
// Error case: using the copy buffer is an error.
{
wgpu::RenderBundleEncoder encoder = device.CreateRenderBundleEncoder(&renderBundleDesc);
encoder.SetIndexBuffer(copyBuffer, wgpu::IndexFormat::Uint32);
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Check the alignment constraint on the index buffer offset.
TEST_F(IndexBufferValidationTest, OffsetAlignment) {
wgpu::Buffer indexBuffer =
utils::CreateBufferFromData<uint32_t>(device, wgpu::BufferUsage::Index, {0, 1, 2});
PlaceholderRenderPass renderPass(device);
// Control cases: index buffer offset is a multiple of the index format size
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32, 0);
pass.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32, 4);
pass.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint16, 0);
pass.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint16, 2);
pass.End();
encoder.Finish();
}
// Error case: index buffer offset isn't a multiple of 4 for IndexFormat::Uint32
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint32, 2);
pass.End();
ASSERT_DEVICE_ERROR(encoder.Finish());
}
// Error case: index buffer offset isn't a multiple of 2 for IndexFormat::Uint16
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass);
pass.SetIndexBuffer(indexBuffer, wgpu::IndexFormat::Uint16, 1);
pass.End();
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
} // anonymous namespace
} // namespace dawn