| /**************************************************************************** |
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| ****************************************************************************/ |
| |
| #include "trianglerenderer.h" |
| #include <QVulkanFunctions> |
| #include <QFile> |
| |
| // Note that the vertex data and the projection matrix assume OpenGL. With |
| // Vulkan Y is negated in clip space and the near/far plane is at 0/1 instead |
| // of -1/1. These will be corrected for by an extra transformation when |
| // calculating the modelview-projection matrix. |
| static float vertexData[] = { // Y up, front = CCW |
| 0.0f, 0.5f, 1.0f, 0.0f, 0.0f, |
| -0.5f, -0.5f, 0.0f, 1.0f, 0.0f, |
| 0.5f, -0.5f, 0.0f, 0.0f, 1.0f |
| }; |
| |
| static const int UNIFORM_DATA_SIZE = 16 * sizeof(float); |
| |
| static inline VkDeviceSize aligned(VkDeviceSize v, VkDeviceSize byteAlign) |
| { |
| return (v + byteAlign - 1) & ~(byteAlign - 1); |
| } |
| |
| TriangleRenderer::TriangleRenderer(QVulkanWindow *w, bool msaa) |
| : m_window(w) |
| { |
| if (msaa) { |
| const QVector<int> counts = w->supportedSampleCounts(); |
| qDebug() << "Supported sample counts:" << counts; |
| for (int s = 16; s >= 4; s /= 2) { |
| if (counts.contains(s)) { |
| qDebug("Requesting sample count %d", s); |
| m_window->setSampleCount(s); |
| break; |
| } |
| } |
| } |
| } |
| |
| VkShaderModule TriangleRenderer::createShader(const QString &name) |
| { |
| QFile file(name); |
| if (!file.open(QIODevice::ReadOnly)) { |
| qWarning("Failed to read shader %s", qPrintable(name)); |
| return VK_NULL_HANDLE; |
| } |
| QByteArray blob = file.readAll(); |
| file.close(); |
| |
| VkShaderModuleCreateInfo shaderInfo; |
| memset(&shaderInfo, 0, sizeof(shaderInfo)); |
| shaderInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO; |
| shaderInfo.codeSize = blob.size(); |
| shaderInfo.pCode = reinterpret_cast<const uint32_t *>(blob.constData()); |
| VkShaderModule shaderModule; |
| VkResult err = m_devFuncs->vkCreateShaderModule(m_window->device(), &shaderInfo, nullptr, &shaderModule); |
| if (err != VK_SUCCESS) { |
| qWarning("Failed to create shader module: %d", err); |
| return VK_NULL_HANDLE; |
| } |
| |
| return shaderModule; |
| } |
| |
| void TriangleRenderer::initResources() |
| { |
| qDebug("initResources"); |
| |
| VkDevice dev = m_window->device(); |
| m_devFuncs = m_window->vulkanInstance()->deviceFunctions(dev); |
| |
| // Prepare the vertex and uniform data. The vertex data will never |
| // change so one buffer is sufficient regardless of the value of |
| // QVulkanWindow::CONCURRENT_FRAME_COUNT. Uniform data is changing per |
| // frame however so active frames have to have a dedicated copy. |
| |
| // Use just one memory allocation and one buffer. We will then specify the |
| // appropriate offsets for uniform buffers in the VkDescriptorBufferInfo. |
| // Have to watch out for |
| // VkPhysicalDeviceLimits::minUniformBufferOffsetAlignment, though. |
| |
| // The uniform buffer is not strictly required in this example, we could |
| // have used push constants as well since our single matrix (64 bytes) fits |
| // into the spec mandated minimum limit of 128 bytes. However, once that |
| // limit is not sufficient, the per-frame buffers, as shown below, will |
| // become necessary. |
| |
| const int concurrentFrameCount = m_window->concurrentFrameCount(); |
| const VkPhysicalDeviceLimits *pdevLimits = &m_window->physicalDeviceProperties()->limits; |
| const VkDeviceSize uniAlign = pdevLimits->minUniformBufferOffsetAlignment; |
| qDebug("uniform buffer offset alignment is %u", (uint) uniAlign); |
| VkBufferCreateInfo bufInfo; |
| memset(&bufInfo, 0, sizeof(bufInfo)); |
| bufInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO; |
| // Our internal layout is vertex, uniform, uniform, ... with each uniform buffer start offset aligned to uniAlign. |
| const VkDeviceSize vertexAllocSize = aligned(sizeof(vertexData), uniAlign); |
| const VkDeviceSize uniformAllocSize = aligned(UNIFORM_DATA_SIZE, uniAlign); |
| bufInfo.size = vertexAllocSize + concurrentFrameCount * uniformAllocSize; |
| bufInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT; |
| |
| VkResult err = m_devFuncs->vkCreateBuffer(dev, &bufInfo, nullptr, &m_buf); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to create buffer: %d", err); |
| |
| VkMemoryRequirements memReq; |
| m_devFuncs->vkGetBufferMemoryRequirements(dev, m_buf, &memReq); |
| |
| VkMemoryAllocateInfo memAllocInfo = { |
| VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, |
| nullptr, |
| memReq.size, |
| m_window->hostVisibleMemoryIndex() |
| }; |
| |
| err = m_devFuncs->vkAllocateMemory(dev, &memAllocInfo, nullptr, &m_bufMem); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to allocate memory: %d", err); |
| |
| err = m_devFuncs->vkBindBufferMemory(dev, m_buf, m_bufMem, 0); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to bind buffer memory: %d", err); |
| |
| quint8 *p; |
| err = m_devFuncs->vkMapMemory(dev, m_bufMem, 0, memReq.size, 0, reinterpret_cast<void **>(&p)); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to map memory: %d", err); |
| memcpy(p, vertexData, sizeof(vertexData)); |
| QMatrix4x4 ident; |
| memset(m_uniformBufInfo, 0, sizeof(m_uniformBufInfo)); |
| for (int i = 0; i < concurrentFrameCount; ++i) { |
| const VkDeviceSize offset = vertexAllocSize + i * uniformAllocSize; |
| memcpy(p + offset, ident.constData(), 16 * sizeof(float)); |
| m_uniformBufInfo[i].buffer = m_buf; |
| m_uniformBufInfo[i].offset = offset; |
| m_uniformBufInfo[i].range = uniformAllocSize; |
| } |
| m_devFuncs->vkUnmapMemory(dev, m_bufMem); |
| |
| VkVertexInputBindingDescription vertexBindingDesc = { |
| 0, // binding |
| 5 * sizeof(float), |
| VK_VERTEX_INPUT_RATE_VERTEX |
| }; |
| VkVertexInputAttributeDescription vertexAttrDesc[] = { |
| { // position |
| 0, // location |
| 0, // binding |
| VK_FORMAT_R32G32_SFLOAT, |
| 0 |
| }, |
| { // color |
| 1, |
| 0, |
| VK_FORMAT_R32G32B32_SFLOAT, |
| 2 * sizeof(float) |
| } |
| }; |
| |
| VkPipelineVertexInputStateCreateInfo vertexInputInfo; |
| vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO; |
| vertexInputInfo.pNext = nullptr; |
| vertexInputInfo.flags = 0; |
| vertexInputInfo.vertexBindingDescriptionCount = 1; |
| vertexInputInfo.pVertexBindingDescriptions = &vertexBindingDesc; |
| vertexInputInfo.vertexAttributeDescriptionCount = 2; |
| vertexInputInfo.pVertexAttributeDescriptions = vertexAttrDesc; |
| |
| // Set up descriptor set and its layout. |
| VkDescriptorPoolSize descPoolSizes = { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, uint32_t(concurrentFrameCount) }; |
| VkDescriptorPoolCreateInfo descPoolInfo; |
| memset(&descPoolInfo, 0, sizeof(descPoolInfo)); |
| descPoolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO; |
| descPoolInfo.maxSets = concurrentFrameCount; |
| descPoolInfo.poolSizeCount = 1; |
| descPoolInfo.pPoolSizes = &descPoolSizes; |
| err = m_devFuncs->vkCreateDescriptorPool(dev, &descPoolInfo, nullptr, &m_descPool); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to create descriptor pool: %d", err); |
| |
| VkDescriptorSetLayoutBinding layoutBinding = { |
| 0, // binding |
| VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, |
| 1, |
| VK_SHADER_STAGE_VERTEX_BIT, |
| nullptr |
| }; |
| VkDescriptorSetLayoutCreateInfo descLayoutInfo = { |
| VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO, |
| nullptr, |
| 0, |
| 1, |
| &layoutBinding |
| }; |
| err = m_devFuncs->vkCreateDescriptorSetLayout(dev, &descLayoutInfo, nullptr, &m_descSetLayout); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to create descriptor set layout: %d", err); |
| |
| for (int i = 0; i < concurrentFrameCount; ++i) { |
| VkDescriptorSetAllocateInfo descSetAllocInfo = { |
| VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO, |
| nullptr, |
| m_descPool, |
| 1, |
| &m_descSetLayout |
| }; |
| err = m_devFuncs->vkAllocateDescriptorSets(dev, &descSetAllocInfo, &m_descSet[i]); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to allocate descriptor set: %d", err); |
| |
| VkWriteDescriptorSet descWrite; |
| memset(&descWrite, 0, sizeof(descWrite)); |
| descWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; |
| descWrite.dstSet = m_descSet[i]; |
| descWrite.descriptorCount = 1; |
| descWrite.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER; |
| descWrite.pBufferInfo = &m_uniformBufInfo[i]; |
| m_devFuncs->vkUpdateDescriptorSets(dev, 1, &descWrite, 0, nullptr); |
| } |
| |
| // Pipeline cache |
| VkPipelineCacheCreateInfo pipelineCacheInfo; |
| memset(&pipelineCacheInfo, 0, sizeof(pipelineCacheInfo)); |
| pipelineCacheInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO; |
| err = m_devFuncs->vkCreatePipelineCache(dev, &pipelineCacheInfo, nullptr, &m_pipelineCache); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to create pipeline cache: %d", err); |
| |
| // Pipeline layout |
| VkPipelineLayoutCreateInfo pipelineLayoutInfo; |
| memset(&pipelineLayoutInfo, 0, sizeof(pipelineLayoutInfo)); |
| pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO; |
| pipelineLayoutInfo.setLayoutCount = 1; |
| pipelineLayoutInfo.pSetLayouts = &m_descSetLayout; |
| err = m_devFuncs->vkCreatePipelineLayout(dev, &pipelineLayoutInfo, nullptr, &m_pipelineLayout); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to create pipeline layout: %d", err); |
| |
| // Shaders |
| VkShaderModule vertShaderModule = createShader(QStringLiteral(":/color_vert.spv")); |
| VkShaderModule fragShaderModule = createShader(QStringLiteral(":/color_frag.spv")); |
| |
| // Graphics pipeline |
| VkGraphicsPipelineCreateInfo pipelineInfo; |
| memset(&pipelineInfo, 0, sizeof(pipelineInfo)); |
| pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO; |
| |
| VkPipelineShaderStageCreateInfo shaderStages[2] = { |
| { |
| VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO, |
| nullptr, |
| 0, |
| VK_SHADER_STAGE_VERTEX_BIT, |
| vertShaderModule, |
| "main", |
| nullptr |
| }, |
| { |
| VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO, |
| nullptr, |
| 0, |
| VK_SHADER_STAGE_FRAGMENT_BIT, |
| fragShaderModule, |
| "main", |
| nullptr |
| } |
| }; |
| pipelineInfo.stageCount = 2; |
| pipelineInfo.pStages = shaderStages; |
| |
| pipelineInfo.pVertexInputState = &vertexInputInfo; |
| |
| VkPipelineInputAssemblyStateCreateInfo ia; |
| memset(&ia, 0, sizeof(ia)); |
| ia.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO; |
| ia.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST; |
| pipelineInfo.pInputAssemblyState = &ia; |
| |
| // The viewport and scissor will be set dynamically via vkCmdSetViewport/Scissor. |
| // This way the pipeline does not need to be touched when resizing the window. |
| VkPipelineViewportStateCreateInfo vp; |
| memset(&vp, 0, sizeof(vp)); |
| vp.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO; |
| vp.viewportCount = 1; |
| vp.scissorCount = 1; |
| pipelineInfo.pViewportState = &vp; |
| |
| VkPipelineRasterizationStateCreateInfo rs; |
| memset(&rs, 0, sizeof(rs)); |
| rs.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO; |
| rs.polygonMode = VK_POLYGON_MODE_FILL; |
| rs.cullMode = VK_CULL_MODE_NONE; // we want the back face as well |
| rs.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; |
| rs.lineWidth = 1.0f; |
| pipelineInfo.pRasterizationState = &rs; |
| |
| VkPipelineMultisampleStateCreateInfo ms; |
| memset(&ms, 0, sizeof(ms)); |
| ms.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO; |
| // Enable multisampling. |
| ms.rasterizationSamples = m_window->sampleCountFlagBits(); |
| pipelineInfo.pMultisampleState = &ms; |
| |
| VkPipelineDepthStencilStateCreateInfo ds; |
| memset(&ds, 0, sizeof(ds)); |
| ds.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO; |
| ds.depthTestEnable = VK_TRUE; |
| ds.depthWriteEnable = VK_TRUE; |
| ds.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL; |
| pipelineInfo.pDepthStencilState = &ds; |
| |
| VkPipelineColorBlendStateCreateInfo cb; |
| memset(&cb, 0, sizeof(cb)); |
| cb.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO; |
| // no blend, write out all of rgba |
| VkPipelineColorBlendAttachmentState att; |
| memset(&att, 0, sizeof(att)); |
| att.colorWriteMask = 0xF; |
| cb.attachmentCount = 1; |
| cb.pAttachments = &att; |
| pipelineInfo.pColorBlendState = &cb; |
| |
| VkDynamicState dynEnable[] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR }; |
| VkPipelineDynamicStateCreateInfo dyn; |
| memset(&dyn, 0, sizeof(dyn)); |
| dyn.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO; |
| dyn.dynamicStateCount = sizeof(dynEnable) / sizeof(VkDynamicState); |
| dyn.pDynamicStates = dynEnable; |
| pipelineInfo.pDynamicState = &dyn; |
| |
| pipelineInfo.layout = m_pipelineLayout; |
| pipelineInfo.renderPass = m_window->defaultRenderPass(); |
| |
| err = m_devFuncs->vkCreateGraphicsPipelines(dev, m_pipelineCache, 1, &pipelineInfo, nullptr, &m_pipeline); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to create graphics pipeline: %d", err); |
| |
| if (vertShaderModule) |
| m_devFuncs->vkDestroyShaderModule(dev, vertShaderModule, nullptr); |
| if (fragShaderModule) |
| m_devFuncs->vkDestroyShaderModule(dev, fragShaderModule, nullptr); |
| } |
| |
| void TriangleRenderer::initSwapChainResources() |
| { |
| qDebug("initSwapChainResources"); |
| |
| // Projection matrix |
| m_proj = m_window->clipCorrectionMatrix(); // adjust for Vulkan-OpenGL clip space differences |
| const QSize sz = m_window->swapChainImageSize(); |
| m_proj.perspective(45.0f, sz.width() / (float) sz.height(), 0.01f, 100.0f); |
| m_proj.translate(0, 0, -4); |
| } |
| |
| void TriangleRenderer::releaseSwapChainResources() |
| { |
| qDebug("releaseSwapChainResources"); |
| } |
| |
| void TriangleRenderer::releaseResources() |
| { |
| qDebug("releaseResources"); |
| |
| VkDevice dev = m_window->device(); |
| |
| if (m_pipeline) { |
| m_devFuncs->vkDestroyPipeline(dev, m_pipeline, nullptr); |
| m_pipeline = VK_NULL_HANDLE; |
| } |
| |
| if (m_pipelineLayout) { |
| m_devFuncs->vkDestroyPipelineLayout(dev, m_pipelineLayout, nullptr); |
| m_pipelineLayout = VK_NULL_HANDLE; |
| } |
| |
| if (m_pipelineCache) { |
| m_devFuncs->vkDestroyPipelineCache(dev, m_pipelineCache, nullptr); |
| m_pipelineCache = VK_NULL_HANDLE; |
| } |
| |
| if (m_descSetLayout) { |
| m_devFuncs->vkDestroyDescriptorSetLayout(dev, m_descSetLayout, nullptr); |
| m_descSetLayout = VK_NULL_HANDLE; |
| } |
| |
| if (m_descPool) { |
| m_devFuncs->vkDestroyDescriptorPool(dev, m_descPool, nullptr); |
| m_descPool = VK_NULL_HANDLE; |
| } |
| |
| if (m_buf) { |
| m_devFuncs->vkDestroyBuffer(dev, m_buf, nullptr); |
| m_buf = VK_NULL_HANDLE; |
| } |
| |
| if (m_bufMem) { |
| m_devFuncs->vkFreeMemory(dev, m_bufMem, nullptr); |
| m_bufMem = VK_NULL_HANDLE; |
| } |
| } |
| |
| void TriangleRenderer::startNextFrame() |
| { |
| VkDevice dev = m_window->device(); |
| VkCommandBuffer cb = m_window->currentCommandBuffer(); |
| const QSize sz = m_window->swapChainImageSize(); |
| |
| VkClearColorValue clearColor = {{ 0, 0, 0, 1 }}; |
| VkClearDepthStencilValue clearDS = { 1, 0 }; |
| VkClearValue clearValues[3]; |
| memset(clearValues, 0, sizeof(clearValues)); |
| clearValues[0].color = clearValues[2].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(); |
| rpBeginInfo.renderArea.extent.width = sz.width(); |
| rpBeginInfo.renderArea.extent.height = sz.height(); |
| rpBeginInfo.clearValueCount = m_window->sampleCountFlagBits() > VK_SAMPLE_COUNT_1_BIT ? 3 : 2; |
| rpBeginInfo.pClearValues = clearValues; |
| VkCommandBuffer cmdBuf = m_window->currentCommandBuffer(); |
| m_devFuncs->vkCmdBeginRenderPass(cmdBuf, &rpBeginInfo, VK_SUBPASS_CONTENTS_INLINE); |
| |
| quint8 *p; |
| VkResult err = m_devFuncs->vkMapMemory(dev, m_bufMem, m_uniformBufInfo[m_window->currentFrame()].offset, |
| UNIFORM_DATA_SIZE, 0, reinterpret_cast<void **>(&p)); |
| if (err != VK_SUCCESS) |
| qFatal("Failed to map memory: %d", err); |
| QMatrix4x4 m = m_proj; |
| m.rotate(m_rotation, 0, 1, 0); |
| memcpy(p, m.constData(), 16 * sizeof(float)); |
| m_devFuncs->vkUnmapMemory(dev, m_bufMem); |
| |
| // Not exactly a real animation system, just advance on every frame for now. |
| m_rotation += 1.0f; |
| |
| m_devFuncs->vkCmdBindPipeline(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipeline); |
| m_devFuncs->vkCmdBindDescriptorSets(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipelineLayout, 0, 1, |
| &m_descSet[m_window->currentFrame()], 0, nullptr); |
| VkDeviceSize vbOffset = 0; |
| m_devFuncs->vkCmdBindVertexBuffers(cb, 0, 1, &m_buf, &vbOffset); |
| |
| VkViewport viewport; |
| viewport.x = viewport.y = 0; |
| viewport.width = sz.width(); |
| viewport.height = sz.height(); |
| viewport.minDepth = 0; |
| viewport.maxDepth = 1; |
| m_devFuncs->vkCmdSetViewport(cb, 0, 1, &viewport); |
| |
| VkRect2D scissor; |
| scissor.offset.x = scissor.offset.y = 0; |
| scissor.extent.width = viewport.width; |
| scissor.extent.height = viewport.height; |
| m_devFuncs->vkCmdSetScissor(cb, 0, 1, &scissor); |
| |
| m_devFuncs->vkCmdDraw(cb, 3, 1, 0, 0); |
| |
| m_devFuncs->vkCmdEndRenderPass(cmdBuf); |
| |
| m_window->frameReady(); |
| m_window->requestUpdate(); // render continuously, throttled by the presentation rate |
| } |