// parameters should be validated/clamped by caller
EGLint SwapChain11::swapRect(EGLint x, EGLint y, EGLint width, EGLint height)
{
if (!mSwapChain)
{
return EGL_SUCCESS;
}
ID3D11Device *device = mRenderer->getDevice();
ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext();
// Set vertices
D3D11_MAPPED_SUBRESOURCE mappedResource;
HRESULT result = deviceContext->Map(mQuadVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
if (FAILED(result))
{
return EGL_BAD_ACCESS;
}
d3d11::PositionTexCoordVertex *vertices = static_cast<d3d11::PositionTexCoordVertex*>(mappedResource.pData);
// Create a quad in homogeneous coordinates
float x1 = (x / float(mWidth)) * 2.0f - 1.0f;
float y1 = (y / float(mHeight)) * 2.0f - 1.0f;
float x2 = ((x + width) / float(mWidth)) * 2.0f - 1.0f;
float y2 = ((y + height) / float(mHeight)) * 2.0f - 1.0f;
float u1 = x / float(mWidth);
float v1 = y / float(mHeight);
float u2 = (x + width) / float(mWidth);
float v2 = (y + height) / float(mHeight);
d3d11::SetPositionTexCoordVertex(&vertices[0], x1, y1, u1, v1);
d3d11::SetPositionTexCoordVertex(&vertices[1], x1, y2, u1, v2);
d3d11::SetPositionTexCoordVertex(&vertices[2], x2, y1, u2, v1);
d3d11::SetPositionTexCoordVertex(&vertices[3], x2, y2, u2, v2);
deviceContext->Unmap(mQuadVB, 0);
static UINT stride = sizeof(d3d11::PositionTexCoordVertex);
static UINT startIdx = 0;
deviceContext->IASetVertexBuffers(0, 1, &mQuadVB, &stride, &startIdx);
// Apply state
deviceContext->OMSetDepthStencilState(NULL, 0xFFFFFFFF);
static const float blendFactor[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
deviceContext->OMSetBlendState(NULL, blendFactor, 0xFFFFFFF);
deviceContext->RSSetState(NULL);
// Apply shaders
deviceContext->IASetInputLayout(mPassThroughIL);
deviceContext->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
deviceContext->VSSetShader(mPassThroughVS, NULL, 0);
deviceContext->PSSetShader(mPassThroughPS, NULL, 0);
deviceContext->GSSetShader(NULL, NULL, 0);
// Apply render targets
mRenderer->setOneTimeRenderTarget(mBackBufferRTView);
// Set the viewport
D3D11_VIEWPORT viewport;
viewport.TopLeftX = 0;
viewport.TopLeftY = 0;
viewport.Width = mWidth;
viewport.Height = mHeight;
viewport.MinDepth = 0.0f;
viewport.MaxDepth = 1.0f;
deviceContext->RSSetViewports(1, &viewport);
// Apply textures
deviceContext->PSSetShaderResources(0, 1, &mOffscreenSRView);
deviceContext->PSSetSamplers(0, 1, &mPassThroughSampler);
// Draw
deviceContext->Draw(4, 0);
result = mSwapChain->Present(mSwapInterval, 0);
if (result == DXGI_ERROR_DEVICE_REMOVED)
{
HRESULT removedReason = device->GetDeviceRemovedReason();
ERR("Present failed: the D3D11 device was removed: 0x%08X", removedReason);
return EGL_CONTEXT_LOST;
}
else if (result == DXGI_ERROR_DEVICE_RESET)
{
ERR("Present failed: the D3D11 device was reset from a bad command.");
return EGL_CONTEXT_LOST;
}
else if (FAILED(result))
{
ERR("Present failed with error code 0x%08X", result);
}
// Unbind
static ID3D11ShaderResourceView *const nullSRV = NULL;
deviceContext->PSSetShaderResources(0, 1, &nullSRV);
mRenderer->unapplyRenderTargets();
mRenderer->markAllStateDirty();
return EGL_SUCCESS;
}
// parameters should be validated/clamped by caller
EGLint SwapChain11::swapRect(EGLint x, EGLint y, EGLint width, EGLint height)
{
if (!mSwapChain)
{
return EGL_SUCCESS;
}
if (mRenderToBackBuffer)
{
// When rendering directly to the backbuffer, we must swap the whole buffer.
if (!(x == 0 && y == 0 && width == mWidth && height == mHeight))
{
ERR("When rendering directly to the backbuffer, swapRect can only be called on the entire backbuffer.");
ASSERT(false);
return EGL_FALSE;
}
}
HRESULT result = S_OK;
ID3D11Device *device = mRenderer->getDevice();
if (!mRenderToBackBuffer)
{
ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext();
// Set vertices
D3D11_MAPPED_SUBRESOURCE mappedResource;
result = deviceContext->Map(mQuadVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
if (FAILED(result))
{
return EGL_BAD_ACCESS;
}
d3d11::PositionTexCoordVertex *vertices = static_cast<d3d11::PositionTexCoordVertex*>(mappedResource.pData);
// Create a quad in homogeneous coordinates
float x1 = (x / float(mWidth)) * 2.0f - 1.0f;
float y1 = (y / float(mHeight)) * 2.0f - 1.0f;
float x2 = ((x + width) / float(mWidth)) * 2.0f - 1.0f;
float y2 = ((y + height) / float(mHeight)) * 2.0f - 1.0f;
float u1 = x / float(mWidth);
float v1 = y / float(mHeight);
float u2 = (x + width) / float(mWidth);
float v2 = (y + height) / float(mHeight);
d3d11::SetPositionTexCoordVertex(&vertices[0], x1, y1, u1, v1);
d3d11::SetPositionTexCoordVertex(&vertices[1], x1, y2, u1, v2);
d3d11::SetPositionTexCoordVertex(&vertices[2], x2, y1, u2, v1);
d3d11::SetPositionTexCoordVertex(&vertices[3], x2, y2, u2, v2);
deviceContext->Unmap(mQuadVB, 0);
static UINT stride = sizeof(d3d11::PositionTexCoordVertex);
static UINT startIdx = 0;
deviceContext->IASetVertexBuffers(0, 1, &mQuadVB, &stride, &startIdx);
// Apply state
deviceContext->OMSetDepthStencilState(NULL, 0xFFFFFFFF);
static const float blendFactor[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
deviceContext->OMSetBlendState(NULL, blendFactor, 0xFFFFFFF);
deviceContext->RSSetState(NULL);
// Apply shaders
deviceContext->IASetInputLayout(mPassThroughIL);
deviceContext->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
deviceContext->VSSetShader(mPassThroughVS, NULL, 0);
deviceContext->PSSetShader(mPassThroughPS, NULL, 0);
deviceContext->GSSetShader(NULL, NULL, 0);
// Apply render targets
mRenderer->setOneTimeRenderTarget(mBackBufferRTView);
// Set the viewport
D3D11_VIEWPORT viewport;
viewport.TopLeftX = 0;
viewport.TopLeftY = 0;
viewport.Width = static_cast<FLOAT>(mWidth);
viewport.Height = static_cast<FLOAT>(mHeight);
viewport.MinDepth = 0.0f;
viewport.MaxDepth = 1.0f;
deviceContext->RSSetViewports(1, &viewport);
// Apply textures
mRenderer->setShaderResource(gl::SAMPLER_PIXEL, 0, mOffscreenSRView);
deviceContext->PSSetSamplers(0, 1, &mPassThroughSampler);
// Draw
deviceContext->Draw(4, 0);
}
#if ANGLE_VSYNC == ANGLE_DISABLED
result = mSwapChain->Present(0, 0);
#else
// Use IDXGISwapChain1::Present1 with a dirty rect if DXGI 1.2 is available.
if (mSwapChain1 != nullptr)
{
RECT rect =
{
static_cast<LONG>(x), static_cast<LONG>(mHeight - y - height),
static_cast<LONG>(x + width), static_cast<LONG>(mHeight - y)
};
DXGI_PRESENT_PARAMETERS params = { 1, &rect, nullptr, nullptr };
result = mSwapChain1->Present1(mSwapInterval, 0, ¶ms);
}
else
{
result = mSwapChain->Present(mSwapInterval, 0);
}
#endif
if (result == DXGI_ERROR_DEVICE_REMOVED)
{
HRESULT removedReason = device->GetDeviceRemovedReason();
UNUSED_TRACE_VARIABLE(removedReason);
ERR("Present failed: the D3D11 device was removed: 0x%08X", removedReason);
return EGL_CONTEXT_LOST;
}
else if (result == DXGI_ERROR_DEVICE_RESET)
{
ERR("Present failed: the D3D11 device was reset from a bad command.");
return EGL_CONTEXT_LOST;
}
else if (FAILED(result))
{
ERR("Present failed with error code 0x%08X", result);
}
// Unbind
mRenderer->setShaderResource(gl::SAMPLER_PIXEL, 0, NULL);
mRenderer->unapplyRenderTargets();
mRenderer->markAllStateDirty();
return EGL_SUCCESS;
}
