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| |
| #include "hellovulkanwindow.h" |
| #include <QVulkanFunctions> |
| |
| //! [0] |
| QVulkanWindowRenderer *VulkanWindow::createRenderer() |
| { |
| return new VulkanRenderer(this); |
| } |
| |
| VulkanRenderer::VulkanRenderer(QVulkanWindow *w) |
| : m_window(w) |
| { |
| } |
| //! [0] |
| |
| //! [1] |
| void VulkanRenderer::initResources() |
| { |
| qDebug("initResources"); |
| |
| m_devFuncs = m_window->vulkanInstance()->deviceFunctions(m_window->device()); |
| } |
| //! [1] |
| |
| void VulkanRenderer::initSwapChainResources() |
| { |
| qDebug("initSwapChainResources"); |
| } |
| |
| void VulkanRenderer::releaseSwapChainResources() |
| { |
| qDebug("releaseSwapChainResources"); |
| } |
| |
| void VulkanRenderer::releaseResources() |
| { |
| qDebug("releaseResources"); |
| } |
| |
| //! [2] |
| void VulkanRenderer::startNextFrame() |
| { |
| m_green += 0.005f; |
| if (m_green > 1.0f) |
| m_green = 0.0f; |
| |
| VkClearColorValue clearColor = {{ 0.0f, m_green, 0.0f, 1.0f }}; |
| VkClearDepthStencilValue clearDS = { 1.0f, 0 }; |
| VkClearValue clearValues[2]; |
| memset(clearValues, 0, sizeof(clearValues)); |
| clearValues[0].color = clearColor; |
| clearValues[1].depthStencil = clearDS; |
| |
| VkRenderPassBeginInfo rpBeginInfo; |
| memset(&rpBeginInfo, 0, sizeof(rpBeginInfo)); |
| rpBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO; |
| rpBeginInfo.renderPass = m_window->defaultRenderPass(); |
| rpBeginInfo.framebuffer = m_window->currentFramebuffer(); |
| const QSize sz = m_window->swapChainImageSize(); |
| rpBeginInfo.renderArea.extent.width = sz.width(); |
| rpBeginInfo.renderArea.extent.height = sz.height(); |
| rpBeginInfo.clearValueCount = 2; |
| rpBeginInfo.pClearValues = clearValues; |
| VkCommandBuffer cmdBuf = m_window->currentCommandBuffer(); |
| m_devFuncs->vkCmdBeginRenderPass(cmdBuf, &rpBeginInfo, VK_SUBPASS_CONTENTS_INLINE); |
| |
| // Do nothing else. We will just clear to green, changing the component on |
| // every invocation. This also helps verifying the rate to which the thread |
| // is throttled to. (The elapsed time between startNextFrame calls should |
| // typically be around 16 ms. Note that rendering is 2 frames ahead of what |
| // is displayed.) |
| |
| m_devFuncs->vkCmdEndRenderPass(cmdBuf); |
| |
| m_window->frameReady(); |
| m_window->requestUpdate(); // render continuously, throttled by the presentation rate |
| } |
| //! [2] |