C++ SimpleShader::use方法代码示例

// Callbacks to draw things in world space, left-hand space, and right-hand
// space.
void RenderView(
    size_t eye //< Which eye we are rendering
    ,
    const osvr::renderkit::RenderInfo& renderInfo //< Info needed to render
    ,
    ID3D11RenderTargetView* renderTargetView,
    ID3D11DepthStencilView* depthStencilView) {
    // Make sure our pointers are filled in correctly.  The config file selects
    // the graphics library to use, and may not match our needs.
    if (renderInfo.library.D3D11 == nullptr) {
        std::cerr
            << "SetupDisplay: No D3D11 GraphicsLibrary, this should not happen"
            << std::endl;
        return;
    }

    auto context = renderInfo.library.D3D11->context;
    auto device = renderInfo.library.D3D11->device;
    float projectionD3D[16];
    float viewD3D[16];
    XMMATRIX identity = XMMatrixIdentity();

    // Set up to render to the textures for this eye
    context->OMSetRenderTargets(1, &renderTargetView, depthStencilView);

    // Set the viewport to cover the fraction of our render buffer that
    // this eye is responsible for.  This is always the same width and
    // height but shifts over by one width for each eye.
    CD3D11_VIEWPORT viewport(
        static_cast<float>(eye * renderInfo.viewport.width), 0,
        static_cast<float>(renderInfo.viewport.width),
        static_cast<float>(renderInfo.viewport.height));
    context->RSSetViewports(1, &viewport);

    // Make a grey background.  Only clear for the first eye,
    // because clear in DirectX 10 and 11 does not respect the
    // boundaries of the viewport.
    FLOAT colorRgba[4] = {0.3f, 0.3f, 0.3f, 1.0f};
    if (eye == 0) {
        context->ClearRenderTargetView(renderTargetView, colorRgba);
        context->ClearDepthStencilView(
            depthStencilView, D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL, 1.0f, 0);
    }

    osvr::renderkit::OSVR_PoseState_to_D3D(viewD3D, renderInfo.pose);
    osvr::renderkit::OSVR_Projection_to_D3D(projectionD3D,
                                            renderInfo.projection);

    XMMATRIX _projectionD3D(projectionD3D), _viewD3D(viewD3D);

    // draw room
    simpleShader.use(device, context, _projectionD3D, _viewD3D, identity);
    roomCube.draw(device, context);
}

void DrawRightHand(
    void* userData //< Passed into AddRenderCallback
    ,
    osvr::renderkit::GraphicsLibrary library //< Graphics library context to use
    ,
    osvr::renderkit::RenderBuffer buffers //< Buffers to use
    ,
    osvr::renderkit::OSVR_ViewportDescription
        viewport //< Viewport we're rendering into
    ,
    OSVR_PoseState pose //< OSVR ModelView matrix set by RenderManager
    ,
    osvr::renderkit::OSVR_ProjectionMatrix
        projection //< Projection matrix set by RenderManager
    ,
    OSVR_TimeValue deadline //< When the frame should be sent to the screen
    ) {
    // Make sure our pointers are filled in correctly.  The config file selects
    // the graphics library to use, and may not match our needs.
    if (library.D3D11 == nullptr) {
        std::cerr
            << "DrawRightHand: No D3D11 GraphicsLibrary, this should not happen"
            << std::endl;
        return;
    }
    if (buffers.D3D11 == nullptr) {
        std::cerr
            << "DrawRightHand: No D3D11 RenderBuffer, this should not happen"
            << std::endl;
        return;
    }

    auto context = library.D3D11->context;
    auto device = library.D3D11->device;
    auto renderTargetView = buffers.D3D11->colorBufferView;
    float projectionD3D[16];
    float viewD3D[16];
    XMMATRIX identity = XMMatrixIdentity();

    osvr::renderkit::OSVR_PoseState_to_D3D(viewD3D, pose);
    osvr::renderkit::OSVR_Projection_to_D3D(projectionD3D, projection);

    XMMATRIX _projectionD3D(projectionD3D), _viewD3D(viewD3D);

    // draw right hand
    simpleShader.use(device, context, _projectionD3D, _viewD3D, identity);
    handCube.draw(device, context);
}

// Callbacks to draw things in world space, left-hand space, and right-hand
// space.
void RenderView(
    const osvr::renderkit::RenderInfo& renderInfo //< Info needed to render
    ,
    ID3D11RenderTargetView* renderTargetView,
    ID3D11DepthStencilView* depthStencilView) {
    // Make sure our pointers are filled in correctly.  The config file selects
    // the graphics library to use, and may not match our needs.
    if (renderInfo.library.D3D11 == nullptr) {
        std::cerr
            << "SetupDisplay: No D3D11 GraphicsLibrary, this should not happen"
            << std::endl;
        return;
    }

    auto context = renderInfo.library.D3D11->context;
    auto device = renderInfo.library.D3D11->device;
    float projectionD3D[16];
    float viewD3D[16];
    XMMATRIX identity = XMMatrixIdentity();

    // Set up to render to the textures for this eye
    context->OMSetRenderTargets(1, &renderTargetView, depthStencilView);

    // Set up the viewport we're going to draw into.
    CD3D11_VIEWPORT viewport(static_cast<float>(renderInfo.viewport.left),
                             static_cast<float>(renderInfo.viewport.lower),
                             static_cast<float>(renderInfo.viewport.width),
                             static_cast<float>(renderInfo.viewport.height));
    context->RSSetViewports(1, &viewport);

    // Make a grey background
    FLOAT colorRgba[4] = {0.3f, 0.3f, 0.3f, 1.0f};
    context->ClearRenderTargetView(renderTargetView, colorRgba);
    context->ClearDepthStencilView(
        depthStencilView, D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL, 1.0f, 0);

    osvr::renderkit::OSVR_PoseState_to_D3D(viewD3D, renderInfo.pose);
    osvr::renderkit::OSVR_Projection_to_D3D(projectionD3D,
                                            renderInfo.projection);

    XMMATRIX xm_projectionD3D(projectionD3D), xm_viewD3D(viewD3D);

    // draw room
    simpleShader.use(device, context, xm_projectionD3D, xm_viewD3D, identity);
    roomCube.draw(device, context);
}

// Callbacks to draw things in world space, left-hand space, and right-hand
// space.
void RenderView(
    const OSVR_RenderInfoD3D11& renderInfo //< Info needed to render
    ,
    ID3D11RenderTargetView* renderTargetView,
    ID3D11DepthStencilView* depthStencilView) {

    auto context = renderInfo.library.context;
    auto device = renderInfo.library.device;
    float projectionD3D[16];
    float viewD3D[16];
    XMMATRIX identity = XMMatrixIdentity();

    // Set up to render to the textures for this eye
    context->OMSetRenderTargets(1, &renderTargetView, depthStencilView);

    // Set up the viewport we're going to draw into.
    CD3D11_VIEWPORT viewport(static_cast<float>(renderInfo.viewport.left),
                             static_cast<float>(renderInfo.viewport.lower),
                             static_cast<float>(renderInfo.viewport.width),
                             static_cast<float>(renderInfo.viewport.height));
    context->RSSetViewports(1, &viewport);

    // Make a grey background
    FLOAT colorRgba[4] = {0.3f, 0.3f, 0.3f, 1.0f};
    context->ClearRenderTargetView(renderTargetView, colorRgba);
    context->ClearDepthStencilView(
        depthStencilView, D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL, 1.0f, 0);

    OSVR_PoseState_to_D3D(viewD3D, renderInfo.pose);
    OSVR_Projection_to_D3D(projectionD3D,
      renderInfo.projection);

    XMMATRIX xm_projectionD3D(projectionD3D), xm_viewD3D(viewD3D);

    // draw room
    simpleShader.use(device, context, xm_projectionD3D, xm_viewD3D, identity);
    roomCube.draw(device, context);
}