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// Copyright 2021 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "tests/unittests/validation/ValidationTest.h"
#include "common/Constants.h"
#include "common/VertexFormatUtils.h"
#include "utils/ComboRenderPipelineDescriptor.h"
#include "utils/WGPUHelpers.h"
namespace {
constexpr uint32_t kRTSize = 4;
constexpr uint32_t kFloat32x2Stride = 2 * sizeof(float);
constexpr uint32_t kFloat32x4Stride = 4 * sizeof(float);
class DrawVertexAndIndexBufferOOBValidationTests : public ValidationTest {
public:
// Parameters for testing index buffer
struct IndexBufferParams {
wgpu::IndexFormat indexFormat;
uint32_t indexBufferSize; // Size for creating index buffer
uint32_t indexBufferOffsetForEncoder; // Offset for SetIndexBuffer in encoder
uint32_t indexBufferSizeForEncoder; // Size for SetIndexBuffer in encoder
uint32_t maxValidIndexNumber; // max number of {indexCount + firstIndex} for this set
// of parameters
};
// Parameters for testing vertex-step-mode and instance-step-mode vertex buffer
struct VertexBufferParams {
uint32_t bufferStride;
uint32_t bufferSize; // Size for creating vertex buffer
uint32_t bufferOffsetForEncoder; // Offset for SetVertexBuffer in encoder
uint32_t bufferSizeForEncoder; // Size for SetVertexBuffer in encoder
uint32_t maxValidAccessNumber; // max number of valid access time for this set of
// parameters, i.e. {vertexCount + firstVertex} for
// vertex-step-mode, and {instanceCount + firstInstance}
// for instance-step-mode
};
// Parameters for setIndexBuffer
struct IndexBufferDesc {
const wgpu::Buffer buffer;
wgpu::IndexFormat indexFormat;
uint64_t offset = 0;
uint64_t size = 0;
};
// Parameters for setVertexBuffer
struct VertexBufferSpec {
uint32_t slot;
const wgpu::Buffer buffer;
uint64_t offset = 0;
uint64_t size = 0;
};
using VertexBufferList = std::vector<VertexBufferSpec>;
// Buffer layout parameters for creating pipeline
struct PipelineVertexBufferAttributeDesc {
uint32_t shaderLocation;
wgpu::VertexFormat format;
uint64_t offset = 0;
};
struct PipelineVertexBufferDesc {
uint64_t arrayStride;
wgpu::InputStepMode stepMode;
std::vector<PipelineVertexBufferAttributeDesc> attributes = {};
};
void SetUp() override {
ValidationTest::SetUp();
renderPass = utils::CreateBasicRenderPass(device, kRTSize, kRTSize);
fsModule = utils::CreateShaderModule(device, R"(
[[stage(fragment)]] fn main() -> [[location(0)]] vec4<f32> {
return vec4<f32>(0.0, 1.0, 0.0, 1.0);
})");
}
const wgpu::RenderPassDescriptor* GetBasicRenderPassDescriptor() const {
return &renderPass.renderPassInfo;
}
wgpu::Buffer CreateBuffer(uint64_t size,
wgpu::BufferUsage usage = wgpu::BufferUsage::Vertex) {
wgpu::BufferDescriptor descriptor;
descriptor.size = size;
descriptor.usage = usage;
return device.CreateBuffer(&descriptor);
}
wgpu::ShaderModule CreateVertexShaderModuleWithBuffer(
std::vector<PipelineVertexBufferDesc> bufferDescList) {
uint32_t attributeCount = 0;
std::stringstream inputStringStream;
for (auto buffer : bufferDescList) {
for (auto attr : buffer.attributes) {
// [[location({shaderLocation})]] var_{id} : {typeString},
inputStringStream << "[[location(" << attr.shaderLocation << ")]] var_"
<< attributeCount << " : "
<< dawn::GetWGSLVertexFormatType(attr.format) << ", ";
attributeCount++;
}
}
std::stringstream shaderStringStream;
shaderStringStream << R"(
[[stage(vertex)]]
fn main()" << inputStringStream.str()
<< R"() -> [[builtin(position)]] vec4<f32> {
return vec4<f32>(0.0, 1.0, 0.0, 1.0);
})";
return utils::CreateShaderModule(device, shaderStringStream.str().c_str());
}
// Create a render pipeline with given buffer layout description, using a vertex shader
// module automatically generated from the buffer description.
wgpu::RenderPipeline CreateRenderPipelineWithBufferDesc(
std::vector<PipelineVertexBufferDesc> bufferDescList) {
utils::ComboRenderPipelineDescriptor descriptor;
descriptor.vertex.module = CreateVertexShaderModuleWithBuffer(bufferDescList);
descriptor.cFragment.module = fsModule;
descriptor.primitive.topology = wgpu::PrimitiveTopology::TriangleList;
descriptor.vertex.bufferCount = bufferDescList.size();
size_t attributeCount = 0;
for (size_t bufferCount = 0; bufferCount < bufferDescList.size(); bufferCount++) {
auto bufferDesc = bufferDescList[bufferCount];
descriptor.cBuffers[bufferCount].arrayStride = bufferDesc.arrayStride;
descriptor.cBuffers[bufferCount].stepMode = bufferDesc.stepMode;
if (bufferDesc.attributes.size() > 0) {
descriptor.cBuffers[bufferCount].attributeCount = bufferDesc.attributes.size();
descriptor.cBuffers[bufferCount].attributes =
&descriptor.cAttributes[attributeCount];
for (auto attribute : bufferDesc.attributes) {
descriptor.cAttributes[attributeCount].shaderLocation =
attribute.shaderLocation;
descriptor.cAttributes[attributeCount].format = attribute.format;
descriptor.cAttributes[attributeCount].offset = attribute.offset;
attributeCount++;
}
} else {
descriptor.cBuffers[bufferCount].attributeCount = 0;
descriptor.cBuffers[bufferCount].attributes = nullptr;
}
}
descriptor.cTargets[0].format = renderPass.colorFormat;
return device.CreateRenderPipeline(&descriptor);
}
// Create a render pipeline using only one vertex-step-mode Float32x4 buffer
wgpu::RenderPipeline CreateBasicRenderPipeline(uint32_t bufferStride = kFloat32x4Stride) {
DAWN_ASSERT(bufferStride >=
dawn::VertexFormatNumComponents(wgpu::VertexFormat::Float32x4) *
dawn::VertexFormatComponentSize(wgpu::VertexFormat::Float32x4));
std::vector<PipelineVertexBufferDesc> bufferDescList = {
{bufferStride, wgpu::InputStepMode::Vertex, {{0, wgpu::VertexFormat::Float32x4}}},
};
return CreateRenderPipelineWithBufferDesc(bufferDescList);
}
// Create a render pipeline using one vertex-step-mode Float32x4 buffer and one
// instance-step-mode Float32x2 buffer
wgpu::RenderPipeline CreateBasicRenderPipelineWithInstance(
uint32_t bufferStride1 = kFloat32x4Stride,
uint32_t bufferStride2 = kFloat32x2Stride) {
DAWN_ASSERT(bufferStride1 >= kFloat32x4Stride);
DAWN_ASSERT(bufferStride2 >= kFloat32x2Stride);
std::vector<PipelineVertexBufferDesc> bufferDescList = {
{bufferStride1, wgpu::InputStepMode::Vertex, {{0, wgpu::VertexFormat::Float32x4}}},
{bufferStride2,
wgpu::InputStepMode::Instance,
{{3, wgpu::VertexFormat::Float32x2}}},
};
return CreateRenderPipelineWithBufferDesc(bufferDescList);
}
void TestRenderPassDraw(const wgpu::RenderPipeline& pipeline,
VertexBufferList vertexBufferList,
uint32_t vertexCount,
uint32_t instanceCount,
uint32_t firstVertex,
uint32_t firstInstance,
bool isSuccess) {
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder renderPassEncoder =
encoder.BeginRenderPass(GetBasicRenderPassDescriptor());
renderPassEncoder.SetPipeline(pipeline);
for (auto vertexBufferParam : vertexBufferList) {
renderPassEncoder.SetVertexBuffer(vertexBufferParam.slot, vertexBufferParam.buffer,
vertexBufferParam.offset, vertexBufferParam.size);
}
renderPassEncoder.Draw(vertexCount, instanceCount, firstVertex, firstInstance);
renderPassEncoder.EndPass();
if (isSuccess) {
encoder.Finish();
} else {
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
void TestRenderPassDrawIndexed(const wgpu::RenderPipeline& pipeline,
IndexBufferDesc indexBuffer,
VertexBufferList vertexBufferList,
uint32_t indexCount,
uint32_t instanceCount,
uint32_t firstIndex,
int32_t baseVertex,
uint32_t firstInstance,
bool isSuccess) {
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder renderPassEncoder =
encoder.BeginRenderPass(GetBasicRenderPassDescriptor());
renderPassEncoder.SetPipeline(pipeline);
renderPassEncoder.SetIndexBuffer(indexBuffer.buffer, indexBuffer.indexFormat,
indexBuffer.offset, indexBuffer.size);
for (auto vertexBufferParam : vertexBufferList) {
renderPassEncoder.SetVertexBuffer(vertexBufferParam.slot, vertexBufferParam.buffer,
vertexBufferParam.offset, vertexBufferParam.size);
}
renderPassEncoder.DrawIndexed(indexCount, instanceCount, firstIndex, baseVertex,
firstInstance);
renderPassEncoder.EndPass();
if (isSuccess) {
encoder.Finish();
} else {
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
// Parameters list for index buffer. Should cover all IndexFormat, and the zero/non-zero
// offset and size case in SetIndexBuffer
const std::vector<IndexBufferParams> kIndexParamsList = {
{wgpu::IndexFormat::Uint32, 12 * sizeof(uint32_t), 0, 0, 12},
{wgpu::IndexFormat::Uint32, 13 * sizeof(uint32_t), sizeof(uint32_t), 0, 12},
{wgpu::IndexFormat::Uint32, 13 * sizeof(uint32_t), 0, 12 * sizeof(uint32_t), 12},
{wgpu::IndexFormat::Uint32, 14 * sizeof(uint32_t), sizeof(uint32_t),
12 * sizeof(uint32_t), 12},
{wgpu::IndexFormat::Uint16, 12 * sizeof(uint16_t), 0, 0, 12},
{wgpu::IndexFormat::Uint16, 13 * sizeof(uint16_t), sizeof(uint16_t), 0, 12},
{wgpu::IndexFormat::Uint16, 13 * sizeof(uint16_t), 0, 12 * sizeof(uint16_t), 12},
{wgpu::IndexFormat::Uint16, 14 * sizeof(uint16_t), sizeof(uint16_t),
12 * sizeof(uint16_t), 12},
};
// Parameters list for vertex-step-mode buffer. These parameters should cover different
// stride, buffer size, SetVertexBuffer size and offset.
const std::vector<VertexBufferParams> kVertexParamsList = {
// For stride = kFloat32x4Stride
{kFloat32x4Stride, 3 * kFloat32x4Stride, 0, 0, 3},
// Non-zero offset
{kFloat32x4Stride, 4 * kFloat32x4Stride, kFloat32x4Stride, 0, 3},
// Non-zero size
{kFloat32x4Stride, 4 * kFloat32x4Stride, 0, 3 * kFloat32x4Stride, 3},
// Non-zero offset and size
{kFloat32x4Stride, 5 * kFloat32x4Stride, kFloat32x4Stride, 3 * kFloat32x4Stride, 3},
// For stride = 2 * kFloat32x4Stride
{(2 * kFloat32x4Stride), 3 * (2 * kFloat32x4Stride), 0, 0, 3},
// Non-zero offset
{(2 * kFloat32x4Stride), 4 * (2 * kFloat32x4Stride), (2 * kFloat32x4Stride), 0, 3},
// Non-zero size
{(2 * kFloat32x4Stride), 4 * (2 * kFloat32x4Stride), 0, 3 * (2 * kFloat32x4Stride), 3},
// Non-zero offset and size
{(2 * kFloat32x4Stride), 5 * (2 * kFloat32x4Stride), (2 * kFloat32x4Stride),
3 * (2 * kFloat32x4Stride), 3},
};
// Parameters list for instance-step-mode buffer.
const std::vector<VertexBufferParams> kInstanceParamsList = {
// For stride = kFloat32x2Stride
{kFloat32x2Stride, 5 * kFloat32x2Stride, 0, 0, 5},
// Non-zero offset
{kFloat32x2Stride, 6 * kFloat32x2Stride, kFloat32x2Stride, 0, 5},
// Non-zero size
{kFloat32x2Stride, 6 * kFloat32x2Stride, 0, 5 * kFloat32x2Stride, 5},
// Non-zero offset and size
{kFloat32x2Stride, 7 * kFloat32x2Stride, kFloat32x2Stride, 5 * kFloat32x2Stride, 5},
// For stride = 3 * kFloat32x2Stride
{(3 * kFloat32x2Stride), 5 * (3 * kFloat32x2Stride), 0, 0, 5},
// Non-zero offset
{(3 * kFloat32x2Stride), 6 * (3 * kFloat32x2Stride), (3 * kFloat32x2Stride), 0, 5},
// Non-zero size
{(3 * kFloat32x2Stride), 6 * (3 * kFloat32x2Stride), 0, 5 * (3 * kFloat32x2Stride), 5},
// Non-zero offset and size
{(3 * kFloat32x2Stride), 7 * (3 * kFloat32x2Stride), (3 * kFloat32x2Stride),
5 * (3 * kFloat32x2Stride), 5},
};
private:
wgpu::ShaderModule fsModule;
utils::BasicRenderPass renderPass;
};
// Control case for Draw
TEST_F(DrawVertexAndIndexBufferOOBValidationTests, DrawBasic) {
wgpu::RenderPipeline pipeline = CreateBasicRenderPipeline();
wgpu::Buffer vertexBuffer = CreateBuffer(3 * kFloat32x4Stride);
VertexBufferList vertexBufferList = {{0, vertexBuffer, 0, 0}};
TestRenderPassDraw(pipeline, vertexBufferList, 3, 1, 0, 0, true);
}
// Verify vertex buffer OOB for non-instanced Draw are caught in command encoder
TEST_F(DrawVertexAndIndexBufferOOBValidationTests, DrawVertexBufferOutOfBoundWithoutInstance) {
for (VertexBufferParams params : kVertexParamsList) {
// Create a render pipeline without instance step mode buffer
wgpu::RenderPipeline pipeline = CreateBasicRenderPipeline(params.bufferStride);
// Build vertex buffer for 3 vertices
wgpu::Buffer vertexBuffer = CreateBuffer(params.bufferSize);
VertexBufferList vertexBufferList = {
{0, vertexBuffer, params.bufferOffsetForEncoder, params.bufferSizeForEncoder}};
uint32_t n = params.maxValidAccessNumber;
// It is ok to draw n vertices with vertex buffer
TestRenderPassDraw(pipeline, vertexBufferList, n, 1, 0, 0, true);
// It is ok to draw n-1 vertices with offset 1
TestRenderPassDraw(pipeline, vertexBufferList, n - 1, 1, 1, 0, true);
// Drawing more vertices will cause OOB, even if not enough for another primitive
TestRenderPassDraw(pipeline, vertexBufferList, n + 1, 1, 0, 0, false);
// Drawing n vertices will non-zero offset will cause OOB
TestRenderPassDraw(pipeline, vertexBufferList, n, 1, 1, 0, false);
// It is ok to draw any number of instances, as we have no instance-mode buffer
TestRenderPassDraw(pipeline, vertexBufferList, n, 5, 0, 0, true);
TestRenderPassDraw(pipeline, vertexBufferList, n, 5, 0, 5, true);
}
}
// Verify vertex buffer OOB for instanced Draw are caught in command encoder
TEST_F(DrawVertexAndIndexBufferOOBValidationTests, DrawVertexBufferOutOfBoundWithInstance) {
for (VertexBufferParams vertexParams : kVertexParamsList) {
for (VertexBufferParams instanceParams : kInstanceParamsList) {
// Create pipeline with given buffer stride
wgpu::RenderPipeline pipeline = CreateBasicRenderPipelineWithInstance(
vertexParams.bufferStride, instanceParams.bufferStride);
// Build vertex buffer
wgpu::Buffer vertexBuffer = CreateBuffer(vertexParams.bufferSize);
wgpu::Buffer instanceBuffer = CreateBuffer(instanceParams.bufferSize);
VertexBufferList vertexBufferList = {
{0, vertexBuffer, vertexParams.bufferOffsetForEncoder,
vertexParams.bufferSizeForEncoder},
{1, instanceBuffer, instanceParams.bufferOffsetForEncoder,
instanceParams.bufferSizeForEncoder},
};
uint32_t vert = vertexParams.maxValidAccessNumber;
uint32_t inst = instanceParams.maxValidAccessNumber;
// It is ok to draw vert vertices
TestRenderPassDraw(pipeline, vertexBufferList, vert, 1, 0, 0, true);
TestRenderPassDraw(pipeline, vertexBufferList, vert - 1, 1, 1, 0, true);
// It is ok to draw vert vertices and inst instences
TestRenderPassDraw(pipeline, vertexBufferList, vert, inst, 0, 0, true);
TestRenderPassDraw(pipeline, vertexBufferList, vert, inst - 1, 0, 1, true);
// more vertices causing OOB
TestRenderPassDraw(pipeline, vertexBufferList, vert + 1, 1, 0, 0, false);
TestRenderPassDraw(pipeline, vertexBufferList, vert, 1, 1, 0, false);
TestRenderPassDraw(pipeline, vertexBufferList, vert + 1, inst, 0, 0, false);
TestRenderPassDraw(pipeline, vertexBufferList, vert, inst, 1, 0, false);
// more instances causing OOB
TestRenderPassDraw(pipeline, vertexBufferList, vert, inst + 1, 0, 0, false);
TestRenderPassDraw(pipeline, vertexBufferList, vert, inst, 0, 1, false);
// Both OOB
TestRenderPassDraw(pipeline, vertexBufferList, vert, inst + 1, 0, 0, false);
TestRenderPassDraw(pipeline, vertexBufferList, vert, inst, 1, 1, false);
}
}
}
// Control case for DrawIndexed
TEST_F(DrawVertexAndIndexBufferOOBValidationTests, DrawIndexedBasic) {
wgpu::RenderPipeline pipeline = CreateBasicRenderPipeline();
// Build index buffer for 12 indexes
wgpu::Buffer indexBuffer = CreateBuffer(12 * sizeof(uint32_t), wgpu::BufferUsage::Index);
// Build vertex buffer for 3 vertices
wgpu::Buffer vertexBuffer = CreateBuffer(3 * kFloat32x4Stride);
VertexBufferList vertexBufferList = {{0, vertexBuffer, 0, 0}};
IndexBufferDesc indexBufferDesc = {indexBuffer, wgpu::IndexFormat::Uint32};
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, 12, 1, 0, 0, 0,
true);
}
// Verify index buffer OOB for DrawIndexed are caught in command encoder
TEST_F(DrawVertexAndIndexBufferOOBValidationTests, DrawIndexedIndexBufferOOB) {
wgpu::RenderPipeline pipeline = CreateBasicRenderPipelineWithInstance();
for (IndexBufferParams params : kIndexParamsList) {
// Build index buffer use given params
wgpu::Buffer indexBuffer =
CreateBuffer(params.indexBufferSize, wgpu::BufferUsage::Index);
// Build vertex buffer for 3 vertices
wgpu::Buffer vertexBuffer = CreateBuffer(3 * kFloat32x4Stride);
// Build vertex buffer for 5 instances
wgpu::Buffer instanceBuffer = CreateBuffer(5 * kFloat32x2Stride);
VertexBufferList vertexBufferList = {{0, vertexBuffer, 0, 0},
{1, instanceBuffer, 0, 0}};
IndexBufferDesc indexBufferDesc = {indexBuffer, params.indexFormat,
params.indexBufferOffsetForEncoder,
params.indexBufferSizeForEncoder};
uint32_t n = params.maxValidIndexNumber;
// Control case
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, n, 5, 0, 0, 0,
true);
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, n - 1, 5, 1, 0,
0, true);
// Index buffer OOB, indexCount too large
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, n + 1, 5, 0, 0,
0, false);
// Index buffer OOB, indexCount + firstIndex too large
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, n, 5, 1, 0, 0,
false);
if (!HasToggleEnabled("disable_base_vertex")) {
// baseVertex is not considered in CPU validation and has no effect on validation
// Although baseVertex is too large, it will still pass
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, n, 5, 0, 100,
0, true);
// Index buffer OOB, indexCount too large
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, n + 1, 5, 0,
100, 0, false);
}
}
}
// Verify instance mode vertex buffer OOB for DrawIndexed are caught in command encoder
TEST_F(DrawVertexAndIndexBufferOOBValidationTests, DrawIndexedVertexBufferOOB) {
for (VertexBufferParams vertexParams : kVertexParamsList) {
for (VertexBufferParams instanceParams : kInstanceParamsList) {
// Create pipeline with given buffer stride
wgpu::RenderPipeline pipeline = CreateBasicRenderPipelineWithInstance(
vertexParams.bufferStride, instanceParams.bufferStride);
auto indexFormat = wgpu::IndexFormat::Uint32;
auto indexStride = sizeof(uint32_t);
// Build index buffer for 12 indexes
wgpu::Buffer indexBuffer = CreateBuffer(12 * indexStride, wgpu::BufferUsage::Index);
// Build vertex buffer for vertices
wgpu::Buffer vertexBuffer = CreateBuffer(vertexParams.bufferSize);
// Build vertex buffer for instances
wgpu::Buffer instanceBuffer = CreateBuffer(instanceParams.bufferSize);
VertexBufferList vertexBufferList = {
{0, vertexBuffer, vertexParams.bufferOffsetForEncoder,
vertexParams.bufferSizeForEncoder},
{1, instanceBuffer, instanceParams.bufferOffsetForEncoder,
instanceParams.bufferSizeForEncoder}};
IndexBufferDesc indexBufferDesc = {indexBuffer, indexFormat};
uint32_t vert = vertexParams.maxValidAccessNumber;
uint32_t inst = instanceParams.maxValidAccessNumber;
// Control case
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, vert, inst,
0, 0, 0, true);
// Vertex buffer (stepMode = instance) OOB, instanceCount too large
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, vert,
inst + 1, 0, 0, 0, false);
if (!HasToggleEnabled("disable_base_instance")) {
// firstInstance is considered in CPU validation
// Vertex buffer (stepMode = instance) in bound
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, vert,
inst - 1, 0, 0, 1, true);
// Vertex buffer (stepMode = instance) OOB, instanceCount + firstInstance too
// large
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, vert,
inst, 0, 0, 1, false);
}
// OOB of vertex buffer that stepMode=vertex can not be validated in CPU.
TestRenderPassDrawIndexed(pipeline, indexBufferDesc, vertexBufferList, vert + 1,
inst, 0, 0, 0, true);
}
}
}
// Verify that if setVertexBuffer and/or setIndexBuffer for multiple times, only the last one is
// taken into account
TEST_F(DrawVertexAndIndexBufferOOBValidationTests, SetBufferMultipleTime) {
wgpu::IndexFormat indexFormat = wgpu::IndexFormat::Uint32;
uint32_t indexStride = sizeof(uint32_t);
// Build index buffer for 11 indexes
wgpu::Buffer indexBuffer11 = CreateBuffer(11 * indexStride, wgpu::BufferUsage::Index);
// Build index buffer for 12 indexes
wgpu::Buffer indexBuffer12 = CreateBuffer(12 * indexStride, wgpu::BufferUsage::Index);
// Build vertex buffer for 2 vertices
wgpu::Buffer vertexBuffer2 = CreateBuffer(2 * kFloat32x4Stride);
// Build vertex buffer for 3 vertices
wgpu::Buffer vertexBuffer3 = CreateBuffer(3 * kFloat32x4Stride);
// Build vertex buffer for 4 instances
wgpu::Buffer instanceBuffer4 = CreateBuffer(4 * kFloat32x2Stride);
// Build vertex buffer for 5 instances
wgpu::Buffer instanceBuffer5 = CreateBuffer(5 * kFloat32x2Stride);
// Test for setting vertex buffer for multiple times
{
wgpu::RenderPipeline pipeline = CreateBasicRenderPipelineWithInstance();
// Set to vertexBuffer3 and instanceBuffer5 at last
VertexBufferList vertexBufferList = {{0, vertexBuffer2, 0, 0},
{1, instanceBuffer4, 0, 0},
{1, instanceBuffer5, 0, 0},
{0, vertexBuffer3, 0, 0}};
// For Draw, the max vertexCount is 3 and the max instanceCount is 5
TestRenderPassDraw(pipeline, vertexBufferList, 3, 5, 0, 0, true);
TestRenderPassDraw(pipeline, vertexBufferList, 4, 5, 0, 0, false);
TestRenderPassDraw(pipeline, vertexBufferList, 3, 6, 0, 0, false);
// For DrawIndex, the max instanceCount is 5
TestRenderPassDrawIndexed(pipeline, {indexBuffer12, indexFormat}, vertexBufferList, 12,
5, 0, 0, 0, true);
TestRenderPassDrawIndexed(pipeline, {indexBuffer12, indexFormat}, vertexBufferList, 12,
6, 0, 0, 0, false);
// Set to vertexBuffer2 and instanceBuffer4 at last
vertexBufferList = VertexBufferList{{0, vertexBuffer3, 0, 0},
{1, instanceBuffer5, 0, 0},
{0, vertexBuffer2, 0, 0},
{1, instanceBuffer4, 0, 0}};
// For Draw, the max vertexCount is 2 and the max instanceCount is 4
TestRenderPassDraw(pipeline, vertexBufferList, 2, 4, 0, 0, true);
TestRenderPassDraw(pipeline, vertexBufferList, 3, 4, 0, 0, false);
TestRenderPassDraw(pipeline, vertexBufferList, 2, 5, 0, 0, false);
// For DrawIndex, the max instanceCount is 4
TestRenderPassDrawIndexed(pipeline, {indexBuffer12, indexFormat}, vertexBufferList, 12,
4, 0, 0, 0, true);
TestRenderPassDrawIndexed(pipeline, {indexBuffer12, indexFormat}, vertexBufferList, 12,
5, 0, 0, 0, false);
}
// Test for setIndexBuffer multiple times
{
wgpu::RenderPipeline pipeline = CreateBasicRenderPipeline();
VertexBufferList vertexBufferList = {{0, vertexBuffer3, 0, 0}};
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder renderPassEncoder =
encoder.BeginRenderPass(GetBasicRenderPassDescriptor());
renderPassEncoder.SetPipeline(pipeline);
// Index buffer is set to indexBuffer12 at last
renderPassEncoder.SetIndexBuffer(indexBuffer11, indexFormat);
renderPassEncoder.SetIndexBuffer(indexBuffer12, indexFormat);
renderPassEncoder.SetVertexBuffer(0, vertexBuffer3, 0, 0);
// It should be ok to draw 12 index
renderPassEncoder.DrawIndexed(12, 1, 0, 0, 0);
renderPassEncoder.EndPass();
// Expect success
encoder.Finish();
}
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder renderPassEncoder =
encoder.BeginRenderPass(GetBasicRenderPassDescriptor());
renderPassEncoder.SetPipeline(pipeline);
// Index buffer is set to indexBuffer12 at last
renderPassEncoder.SetIndexBuffer(indexBuffer11, indexFormat);
renderPassEncoder.SetIndexBuffer(indexBuffer12, indexFormat);
renderPassEncoder.SetVertexBuffer(0, vertexBuffer3, 0, 0);
// It should be index buffer OOB to draw 13 index
renderPassEncoder.DrawIndexed(13, 1, 0, 0, 0);
renderPassEncoder.EndPass();
// Expect failure
ASSERT_DEVICE_ERROR(encoder.Finish());
}
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder renderPassEncoder =
encoder.BeginRenderPass(GetBasicRenderPassDescriptor());
renderPassEncoder.SetPipeline(pipeline);
// Index buffer is set to indexBuffer11 at last
renderPassEncoder.SetIndexBuffer(indexBuffer12, indexFormat);
renderPassEncoder.SetIndexBuffer(indexBuffer11, indexFormat);
renderPassEncoder.SetVertexBuffer(0, vertexBuffer3, 0, 0);
// It should be ok to draw 11 index
renderPassEncoder.DrawIndexed(11, 1, 0, 0, 0);
renderPassEncoder.EndPass();
// Expect success
encoder.Finish();
}
{
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder renderPassEncoder =
encoder.BeginRenderPass(GetBasicRenderPassDescriptor());
renderPassEncoder.SetPipeline(pipeline);
// Index buffer is set to indexBuffer11 at last
renderPassEncoder.SetIndexBuffer(indexBuffer12, indexFormat);
renderPassEncoder.SetIndexBuffer(indexBuffer11, indexFormat);
renderPassEncoder.SetVertexBuffer(0, vertexBuffer3, 0, 0);
// It should be index buffer OOB to draw 12 index
renderPassEncoder.DrawIndexed(12, 1, 0, 0, 0);
renderPassEncoder.EndPass();
// Expect failure
ASSERT_DEVICE_ERROR(encoder.Finish());
}
}
}
} // anonymous namespace