VulkanExampleBase::~VulkanExampleBase() { // Clean up Vulkan resources swapChain.cleanup(); if (descriptorPool != VK_NULL_HANDLE) { vkDestroyDescriptorPool(device, descriptorPool, nullptr); } if (setupCmdBuffer != VK_NULL_HANDLE) { vkFreeCommandBuffers(device, cmdPool, 1, &setupCmdBuffer); } destroyCommandBuffers(); vkDestroyRenderPass(device, renderPass, nullptr); for (uint32_t i = 0; i < frameBuffers.size(); i++) { vkDestroyFramebuffer(device, frameBuffers[i], nullptr); } for (auto& shaderModule : shaderModules) { vkDestroyShaderModule(device, shaderModule, nullptr); } vkDestroyImageView(device, depthStencil.view, nullptr); vkDestroyImage(device, depthStencil.image, nullptr); vkFreeMemory(device, depthStencil.mem, nullptr); vkDestroyPipelineCache(device, pipelineCache, nullptr); if (textureLoader) { delete textureLoader; } vkDestroyCommandPool(device, cmdPool, nullptr); vkDestroySemaphore(device, semaphores.presentComplete, nullptr); vkDestroySemaphore(device, semaphores.renderComplete, nullptr); vkDestroyDevice(device, nullptr); if (enableValidation) { vkDebug::freeDebugCallback(instance); } vkDestroyInstance(instance, nullptr); #if defined(__linux) #if defined(__ANDROID__) // todo : android cleanup (if required) #else xcb_destroy_window(connection, window); xcb_disconnect(connection); #endif #endif }
void reBuildCommandBuffers() { if (!checkCommandBuffers()) { destroyCommandBuffers(); createCommandBuffers(); } buildCommandBuffers(); }
void VulkanExampleBase::windowResize() { if (!prepared) { return; } prepared = false; // Recreate swap chain width = destWidth; height = destHeight; createSetupCommandBuffer(); setupSwapChain(); // Recreate the frame buffers vkDestroyImageView(device, depthStencil.view, nullptr); vkDestroyImage(device, depthStencil.image, nullptr); vkFreeMemory(device, depthStencil.mem, nullptr); setupDepthStencil(); for (uint32_t i = 0; i < frameBuffers.size(); i++) { vkDestroyFramebuffer(device, frameBuffers[i], nullptr); } setupFrameBuffer(); flushSetupCommandBuffer(); // Command buffers need to be recreated as they may store // references to the recreated frame buffer destroyCommandBuffers(); createCommandBuffers(); buildCommandBuffers(); vkQueueWaitIdle(queue); vkDeviceWaitIdle(device); // Notify derived class windowResized(); viewChanged(); prepared = true; }
VulkanBase::~VulkanBase() { swapChain.cleanup(); vkDestroyDescriptorPool(device, descriptorPool, nullptr); if (setupCmdBuffer != VK_NULL_HANDLE) vkFreeCommandBuffers(device, cmdPool, 1, &setupCmdBuffer); destroyCommandBuffers(); vkDestroyRenderPass(device, renderPass, nullptr); for (uint32_t i = 0; i < frameBuffers.size(); i++) vkDestroyFramebuffer(device, frameBuffers[i], nullptr); for (auto& shaderModule : shaderModules) vkDestroyShaderModule(device, shaderModule, nullptr); vkDestroyImageView(device, depthStencil.view, nullptr); vkDestroyImage(device, depthStencil.image, nullptr); vkFreeMemory(device, depthStencil.mem, nullptr); vkDestroyPipelineCache(device, pipelineCache, nullptr); if (textureLoader) delete textureLoader; vkDestroyCommandPool(device, cmdPool, nullptr); vkDestroySemaphore(device, semaphores.presentComplete, nullptr); vkDestroySemaphore(device, semaphores.renderComplete, nullptr); vkDestroyDevice(device, nullptr); if (enableValidation) vkDebug::freeDebugCallback(instance); vkDestroyInstance(instance, nullptr); }
void buildCommandBuffers() { // Destroy command buffers if already present if (!checkCommandBuffers()) { destroyCommandBuffers(); createCommandBuffers(); } VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo(); VkClearValue clearValues[2]; clearValues[0].color = defaultClearColor; clearValues[1].depthStencil = { 1.0f, 0 }; VkRenderPassBeginInfo renderPassBeginInfo = vkTools::initializers::renderPassBeginInfo(); renderPassBeginInfo.renderPass = renderPass; renderPassBeginInfo.renderArea.offset.x = 0; renderPassBeginInfo.renderArea.offset.y = 0; renderPassBeginInfo.renderArea.extent.width = width; renderPassBeginInfo.renderArea.extent.height = height; renderPassBeginInfo.clearValueCount = 2; renderPassBeginInfo.pClearValues = clearValues; for (int32_t i = 0; i < drawCmdBuffers.size(); ++i) { // Set target frame buffer renderPassBeginInfo.framebuffer = frameBuffers[i]; VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo)); // Compute particle movement // Add memory barrier to ensure that the (rendering) vertex shader operations have finished // Required as the compute shader will overwrite the vertex buffer data VkBufferMemoryBarrier bufferBarrier = vkTools::initializers::bufferMemoryBarrier(); // Vertex shader invocations have finished reading from the buffer bufferBarrier.srcAccessMask = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT; // Compute shader buffer read and write bufferBarrier.dstAccessMask = VK_ACCESS_SHADER_WRITE_BIT | VK_ACCESS_SHADER_READ_BIT; bufferBarrier.buffer = computeStorageBuffer.buffer; bufferBarrier.size = computeStorageBuffer.descriptor.range; bufferBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; bufferBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; vkCmdPipelineBarrier( drawCmdBuffers[i], VK_PIPELINE_STAGE_VERTEX_SHADER_BIT, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_FLAGS_NONE, 0, nullptr, 1, &bufferBarrier, 0, nullptr); vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_COMPUTE, pipelines.compute); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_COMPUTE, computePipelineLayout, 0, 1, &computeDescriptorSet, 0, 0); // Dispatch the compute job vkCmdDispatch(drawCmdBuffers[i], PARTICLE_COUNT / 16, 1, 1); // Add memory barrier to ensure that compute shader has finished writing to the buffer // Without this the (rendering) vertex shader may display incomplete results (partial data from last frame) // Compute shader has finished writes to the buffer bufferBarrier.srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT; // Vertex shader access (attribute binding) bufferBarrier.dstAccessMask = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT; bufferBarrier.buffer = computeStorageBuffer.buffer; bufferBarrier.size = computeStorageBuffer.descriptor.range; bufferBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; bufferBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; vkCmdPipelineBarrier( drawCmdBuffers[i], VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT, VK_FLAGS_NONE, 0, nullptr, 1, &bufferBarrier, 0, nullptr); // Draw the particle system using the update vertex buffer vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE); VkViewport viewport = vkTools::initializers::viewport((float)width, (float)height, 0.0f, 1.0f); vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport); VkRect2D scissor = vkTools::initializers::rect2D(width, height, 0, 0); vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor); vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.postCompute); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSetPostCompute, 0, NULL); VkDeviceSize offsets[1] = { 0 }; vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &computeStorageBuffer.buffer, offsets); vkCmdDraw(drawCmdBuffers[i], PARTICLE_COUNT, 1, 0, 0); vkCmdEndRenderPass(drawCmdBuffers[i]); VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i])); } }
void buildCommandBuffers() { // Destroy command buffers if already present if (!checkCommandBuffers()) { destroyCommandBuffers(); createCommandBuffers(); } VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo(); VkClearValue clearValues[2]; clearValues[0].color = defaultClearColor; clearValues[1].depthStencil = { 1.0f, 0 }; VkRenderPassBeginInfo renderPassBeginInfo = vkTools::initializers::renderPassBeginInfo(); renderPassBeginInfo.renderPass = renderPass; renderPassBeginInfo.renderArea.offset.x = 0; renderPassBeginInfo.renderArea.offset.y = 0; renderPassBeginInfo.renderArea.extent.width = width; renderPassBeginInfo.renderArea.extent.height = height; renderPassBeginInfo.clearValueCount = 2; renderPassBeginInfo.pClearValues = clearValues; VkResult err; for (int32_t i = 0; i < drawCmdBuffers.size(); ++i) { // Set target frame buffer renderPassBeginInfo.framebuffer = frameBuffers[i]; err = vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo); assert(!err); // Buffer memory barrier to make sure that compute shader // writes are finished before using the storage buffer // in the vertex shader VkBufferMemoryBarrier bufferBarrier = vkTools::initializers::bufferMemoryBarrier(); // Source access : Compute shader buffer write bufferBarrier.srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT; // Dest access : Vertex shader access (attribute binding) bufferBarrier.dstAccessMask = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT; bufferBarrier.buffer = computeStorageBuffer.buffer; bufferBarrier.offset = 0; bufferBarrier.size = computeStorageBuffer.descriptor.range; bufferBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; bufferBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; vkCmdPipelineBarrier( drawCmdBuffers[i], VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_FLAGS_NONE, 0, nullptr, 1, &bufferBarrier, 0, nullptr); vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE); VkViewport viewport = vkTools::initializers::viewport( (float)width, (float)height, 0.0f, 1.0f ); vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport); VkRect2D scissor = vkTools::initializers::rect2D( width, height, 0, 0 ); vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSetPostCompute, 0, NULL); vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.postCompute); VkDeviceSize offsets[1] = { 0 }; vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &computeStorageBuffer.buffer, offsets); vkCmdDraw(drawCmdBuffers[i], PARTICLE_COUNT, 1, 0, 0); vkCmdEndRenderPass(drawCmdBuffers[i]); err = vkEndCommandBuffer(drawCmdBuffers[i]); assert(!err); } }