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//
// 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.
//
// D3D11EmulatedIndexedBufferTest:
// Tests to validate our D3D11 support for emulating an indexed
// vertex buffer.
//
#include "libANGLE/angletypes.h"
#include "libANGLE/Context.h"
#include "libANGLE/renderer/d3d/d3d11/Buffer11.h"
#include "libANGLE/renderer/d3d/d3d11/Context11.h"
#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
#include "libANGLE/renderer/d3d/IndexDataManager.h"
#include "test_utils/ANGLETest.h"
#include "test_utils/angle_test_instantiate.h"
using namespace angle;
namespace
{
class D3D11EmulatedIndexedBufferTest : public ANGLETest
{
protected:
void SetUp() override
{
ANGLETest::SetUp();
ASSERT_EQ(EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE, GetParam().getRenderer());
gl::Context *context = reinterpret_cast<gl::Context *>(getEGLWindow()->getContext());
rx::Context11 *context11 = rx::GetImplAs<rx::Context11>(context);
mRenderer = context11->getRenderer();
mSourceBuffer = new rx::Buffer11(mRenderer);
GLfloat testData[] = { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f };
gl::Error error = mSourceBuffer->setData(testData, sizeof(testData), GL_STATIC_DRAW);
ASSERT_FALSE(error.isError());
mTranslatedAttribute.baseOffset = 0;
mTranslatedAttribute.usesFirstVertexOffset = false;
mTranslatedAttribute.stride = sizeof(GLfloat);
GLubyte indices[] = {0, 0, 3, 4, 2, 1, 1};
for (size_t i = 0; i < ArraySize(indices); i++)
{
mExpectedExpandedData.push_back(testData[indices[i]]);
mubyteIndices.push_back(indices[i]);
muintIndices.push_back(indices[i]);
mushortIndices.push_back(indices[i]);
}
}
void TearDown() override
{
SafeDelete(mSourceBuffer);
ANGLETest::TearDown();
}
void createMappableCompareBufferFromEmulatedBuffer(ID3D11Buffer *sourceBuffer, GLuint size, ID3D11Buffer **mappableBuffer)
{
*mappableBuffer = nullptr;
D3D11_BUFFER_DESC bufferDesc;
bufferDesc.ByteWidth = size;
bufferDesc.MiscFlags = 0;
bufferDesc.StructureByteStride = 0;
bufferDesc.Usage = D3D11_USAGE_STAGING;
bufferDesc.BindFlags = 0;
bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
HRESULT hr = mRenderer->getDevice()->CreateBuffer(&bufferDesc, nullptr, mappableBuffer);
ASSERT_TRUE(SUCCEEDED(hr));
D3D11_BOX srcBox;
srcBox.left = 0;
srcBox.right = size;
srcBox.top = 0;
srcBox.bottom = 1;
srcBox.front = 0;
srcBox.back = 1;
mRenderer->getDeviceContext()->CopySubresourceRegion(*mappableBuffer, 0, 0, 0, 0, sourceBuffer, 0, &srcBox);
}
void compareContents(ID3D11Buffer *actual)
{
ID3D11Buffer *compareBuffer = nullptr;
createMappableCompareBufferFromEmulatedBuffer(
actual, sizeof(GLfloat) * static_cast<GLuint>(mExpectedExpandedData.size()),
&compareBuffer);
D3D11_MAPPED_SUBRESOURCE mappedResource;
HRESULT hr = mRenderer->getDeviceContext()->Map(compareBuffer, 0, D3D11_MAP_READ, 0, &mappedResource);
ASSERT_TRUE(SUCCEEDED(hr));
GLfloat* compareData = static_cast<GLfloat*>(mappedResource.pData);
for (size_t i = 0; i < mExpectedExpandedData.size(); i++)
{
EXPECT_EQ(mExpectedExpandedData[i], compareData[i]);
}
mRenderer->getDeviceContext()->Unmap(compareBuffer, 0);
SafeRelease(compareBuffer);
}
void emulateAndCompare(rx::SourceIndexData *srcData)
{
auto bufferOrError =
mSourceBuffer->getEmulatedIndexedBuffer(srcData, mTranslatedAttribute, 0);
ASSERT_FALSE(bufferOrError.isError());
ID3D11Buffer *emulatedBuffer = bufferOrError.getResult();
ASSERT_TRUE(emulatedBuffer != nullptr);
compareContents(emulatedBuffer);
}
protected:
rx::Buffer11 *mSourceBuffer;
rx::Renderer11 *mRenderer;
rx::TranslatedAttribute mTranslatedAttribute;
std::vector<GLfloat> mExpectedExpandedData;
std::vector<GLubyte> mubyteIndices;
std::vector<GLuint> muintIndices;
std::vector<GLushort> mushortIndices;
};
// This tests that a GL_UNSIGNED_BYTE indices list can be successfully expanded
// into a valid emulated indexed buffer.
TEST_P(D3D11EmulatedIndexedBufferTest, TestNativeToExpandedUsingGLubyteIndices)
{
rx::SourceIndexData srcData = {nullptr, mubyteIndices.data(),
static_cast<unsigned int>(mubyteIndices.size()),
GL_UNSIGNED_BYTE, false};
emulateAndCompare(&srcData);
}
// This tests that a GL_UNSIGNED_SHORT indices list can be successfully expanded
// into a valid emulated indexed buffer.
TEST_P(D3D11EmulatedIndexedBufferTest, TestNativeToExpandedUsingGLushortIndices)
{
rx::SourceIndexData srcData = {nullptr, mushortIndices.data(),
static_cast<unsigned int>(mushortIndices.size()),
GL_UNSIGNED_SHORT, false};
emulateAndCompare(&srcData);
}
// This tests that a GL_UNSIGNED_INT indices list can be successfully expanded
// into a valid emulated indexed buffer.
TEST_P(D3D11EmulatedIndexedBufferTest, TestNativeToExpandedUsingGLuintIndices)
{
rx::SourceIndexData srcData = {nullptr, muintIndices.data(),
static_cast<unsigned int>(muintIndices.size()), GL_UNSIGNED_INT,
false};
emulateAndCompare(&srcData);
}
// This tests verifies that a Buffer11 contents remain unchanged after calling getEmulatedIndexedBuffer
TEST_P(D3D11EmulatedIndexedBufferTest, TestSourceBufferRemainsUntouchedAfterExpandOperation)
{
// Copy the original source buffer before any expand calls have been made
rx::Buffer11 *cleanSourceBuffer = new rx::Buffer11(mRenderer);
cleanSourceBuffer->copySubData(mSourceBuffer, 0, 0, mSourceBuffer->getSize());
// Do a basic exanded and compare test.
rx::SourceIndexData srcData = {nullptr, muintIndices.data(),
static_cast<unsigned int>(muintIndices.size()), GL_UNSIGNED_INT,
false};
emulateAndCompare(&srcData);
const uint8_t *sourceBufferMem = nullptr;
const uint8_t *cleanBufferMem = nullptr;
gl::Error error = mSourceBuffer->getData(&sourceBufferMem);
ASSERT_FALSE(error.isError());
error = cleanSourceBuffer->getData(&cleanBufferMem);
ASSERT_FALSE(error.isError());
int result = memcmp(sourceBufferMem, cleanBufferMem, cleanSourceBuffer->getSize());
ASSERT_EQ(result, 0);
SafeDelete(cleanSourceBuffer);
}
ANGLE_INSTANTIATE_TEST(D3D11EmulatedIndexedBufferTest,
ES2_D3D11());
} // anonymous namespace
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