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Code cleanup

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This commit is contained in:
Sascha Willems 2024-01-21 12:52:14 +01:00
parent 922dbd4827
commit a546f466c1
3 changed files with 177 additions and 368 deletions
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383
examples/computeparticles/computeparticles.cpp
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@ -3,7 +3,7 @@
*
* Updated compute shader by Lukas Bergdoll (https://github.com/Voultapher)
*
* Copyright (C) 2016-2021 by Sascha Willems - www.saschawillems.de
* Copyright (C) 2016-2023 by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
*/
@ -29,14 +29,19 @@ public:
vks::Texture2D gradient;
} textures;
struct {
VkPipelineVertexInputStateCreateInfo inputState;
std::vector<VkVertexInputBindingDescription> bindingDescriptions;
std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
} vertices;
// SSBO particle declaration
struct Particle {
glm::vec2 pos; // Particle position
glm::vec2 vel; // Particle velocity
glm::vec4 gradientPos; // Texture coordinates for the gradient ramp map
};
// We use a shader storage buffer object to store the particlces
// This is updated by the compute pipeline and displayed as a vertex buffer by the graphics pipeline
vks::Buffer storageBuffer;
// Resources for the graphics part of the example
struct {
struct Graphics {
uint32_t queueFamilyIndex; // Used to check if compute and graphics queue families differ and require additional barriers
VkDescriptorSetLayout descriptorSetLayout; // Particle system rendering shader binding layout
VkDescriptorSet descriptorSet; // Particle system rendering shader bindings
@ -46,10 +51,8 @@ public:
} graphics;
// Resources for the compute part of the example
struct {
struct Compute {
uint32_t queueFamilyIndex; // Used to check if compute and graphics queue families differ and require additional barriers
vks::Buffer storageBuffer; // (Shader) storage buffer object containing the particles
vks::Buffer uniformBuffer; // Uniform buffer object containing particle system parameters
VkQueue queue; // Separate queue for compute commands (queue family may differ from the one used for graphics)
VkCommandPool commandPool; // Use a separate command pool (queue family may differ from the one used for graphics)
VkCommandBuffer commandBuffer; // Command buffer storing the dispatch commands and barriers
@ -58,21 +61,15 @@ public:
VkDescriptorSet descriptorSet; // Compute shader bindings
VkPipelineLayout pipelineLayout; // Layout of the compute pipeline
VkPipeline pipeline; // Compute pipeline for updating particle positions
struct computeUBO { // Compute shader uniform block object
vks::Buffer uniformBuffer; // Uniform buffer object containing particle system parameters
struct UniformData { // Compute shader uniform block object
float deltaT; // Frame delta time
float destX; // x position of the attractor
float destY; // y position of the attractor
int32_t particleCount = PARTICLE_COUNT;
} ubo;
} uniformData;
} compute;
// SSBO particle declaration
struct Particle {
glm::vec2 pos; // Particle position
glm::vec2 vel; // Particle velocity
glm::vec4 gradientPos; // Texture coordinates for the gradient ramp map
};
VulkanExample() : VulkanExampleBase()
{
title = "Compute shader particle system";
@ -80,23 +77,25 @@ public:
~VulkanExample()
{
// Graphics
vkDestroyPipeline(device, graphics.pipeline, nullptr);
vkDestroyPipelineLayout(device, graphics.pipelineLayout, nullptr);
vkDestroyDescriptorSetLayout(device, graphics.descriptorSetLayout, nullptr);
vkDestroySemaphore(device, graphics.semaphore, nullptr);
if (device) {
// Graphics
vkDestroyPipeline(device, graphics.pipeline, nullptr);
vkDestroyPipelineLayout(device, graphics.pipelineLayout, nullptr);
vkDestroyDescriptorSetLayout(device, graphics.descriptorSetLayout, nullptr);
vkDestroySemaphore(device, graphics.semaphore, nullptr);
// Compute
compute.storageBuffer.destroy();
compute.uniformBuffer.destroy();
vkDestroyPipelineLayout(device, compute.pipelineLayout, nullptr);
vkDestroyDescriptorSetLayout(device, compute.descriptorSetLayout, nullptr);
vkDestroyPipeline(device, compute.pipeline, nullptr);
vkDestroySemaphore(device, compute.semaphore, nullptr);
vkDestroyCommandPool(device, compute.commandPool, nullptr);
// Compute
compute.uniformBuffer.destroy();
vkDestroyPipelineLayout(device, compute.pipelineLayout, nullptr);
vkDestroyDescriptorSetLayout(device, compute.descriptorSetLayout, nullptr);
vkDestroyPipeline(device, compute.pipeline, nullptr);
vkDestroySemaphore(device, compute.semaphore, nullptr);
vkDestroyCommandPool(device, compute.commandPool, nullptr);
textures.particle.destroy();
textures.gradient.destroy();
storageBuffer.destroy();
textures.particle.destroy();
textures.gradient.destroy();
}
}
void loadAssets()
@ -140,9 +139,9 @@ public:
VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT,
compute.queueFamilyIndex,
graphics.queueFamilyIndex,
compute.storageBuffer.buffer,
storageBuffer.buffer,
0,
compute.storageBuffer.size
storageBuffer.size
};
vkCmdPipelineBarrier(
@ -168,7 +167,7 @@ public:
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, graphics.pipelineLayout, 0, 1, &graphics.descriptorSet, 0, NULL);
VkDeviceSize offsets[1] = { 0 };
vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &compute.storageBuffer.buffer, offsets);
vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &storageBuffer.buffer, offsets);
vkCmdDraw(drawCmdBuffers[i], PARTICLE_COUNT, 1, 0, 0);
drawUI(drawCmdBuffers[i]);
@ -186,9 +185,9 @@ public:
0,
graphics.queueFamilyIndex,
compute.queueFamilyIndex,
compute.storageBuffer.buffer,
storageBuffer.buffer,
0,
compute.storageBuffer.size
storageBuffer.size
};
vkCmdPipelineBarrier(
@ -225,9 +224,9 @@ public:
VK_ACCESS_SHADER_WRITE_BIT,
graphics.queueFamilyIndex,
compute.queueFamilyIndex,
compute.storageBuffer.buffer,
storageBuffer.buffer,
0,
compute.storageBuffer.size
storageBuffer.size
};
vkCmdPipelineBarrier(
@ -257,9 +256,9 @@ public:
0,
compute.queueFamilyIndex,
graphics.queueFamilyIndex,
compute.storageBuffer.buffer,
storageBuffer.buffer,
0,
compute.storageBuffer.size
storageBuffer.size
};
vkCmdPipelineBarrier(
@ -307,14 +306,14 @@ public:
// The SSBO will be used as a storage buffer for the compute pipeline and as a vertex buffer in the graphics pipeline
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
&compute.storageBuffer,
&storageBuffer,
storageBufferSize);
// Copy from staging buffer to storage buffer
VkCommandBuffer copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
VkBufferCopy copyRegion = {};
copyRegion.size = storageBufferSize;
vkCmdCopyBuffer(copyCmd, stagingBuffer.buffer, compute.storageBuffer.buffer, 1, &copyRegion);
vkCmdCopyBuffer(copyCmd, stagingBuffer.buffer, storageBuffer.buffer, 1, &copyRegion);
// Execute a transfer barrier to the compute queue, if necessary
if (graphics.queueFamilyIndex != compute.queueFamilyIndex)
{
@ -326,9 +325,9 @@ public:
0,
graphics.queueFamilyIndex,
compute.queueFamilyIndex,
compute.storageBuffer.buffer,
storageBuffer.buffer,
0,
compute.storageBuffer.size
storageBuffer.size
};
vkCmdPipelineBarrier(
@ -343,96 +342,37 @@ public:
vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
stagingBuffer.destroy();
// Binding description
vertices.bindingDescriptions.resize(1);
vertices.bindingDescriptions[0] =
vks::initializers::vertexInputBindingDescription(
0,
sizeof(Particle),
VK_VERTEX_INPUT_RATE_VERTEX);
// Attribute descriptions
// Describes memory layout and shader positions
vertices.attributeDescriptions.resize(2);
// Location 0 : Position
vertices.attributeDescriptions[0] =
vks::initializers::vertexInputAttributeDescription(
0,
0,
VK_FORMAT_R32G32_SFLOAT,
offsetof(Particle, pos));
// Location 1 : Gradient position
vertices.attributeDescriptions[1] =
vks::initializers::vertexInputAttributeDescription(
0,
1,
VK_FORMAT_R32G32B32A32_SFLOAT,
offsetof(Particle, gradientPos));
// Assign to vertex buffer
vertices.inputState = vks::initializers::pipelineVertexInputStateCreateInfo();
vertices.inputState.vertexBindingDescriptionCount = static_cast<uint32_t>(vertices.bindingDescriptions.size());
vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
vertices.inputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertices.attributeDescriptions.size());
vertices.inputState.pVertexAttributeDescriptions = vertices.attributeDescriptions.data();
}
// The descriptor pool will be shared between graphics and compute
void setupDescriptorPool()
{
std::vector<VkDescriptorPoolSize> poolSizes =
{
std::vector<VkDescriptorPoolSize> poolSizes = {
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1),
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2)
};
VkDescriptorPoolCreateInfo descriptorPoolInfo =
vks::initializers::descriptorPoolCreateInfo(
static_cast<uint32_t>(poolSizes.size()),
poolSizes.data(),
2);
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
}
void setupDescriptorSetLayout()
void prepareGraphics()
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings;
// Binding 0 : Particle color map
setLayoutBindings.push_back(vks::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
VK_SHADER_STAGE_FRAGMENT_BIT,
0));
// Binding 1 : Particle gradient ramp
setLayoutBindings.push_back(vks::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
VK_SHADER_STAGE_FRAGMENT_BIT,
1));
VkDescriptorSetLayoutCreateInfo descriptorLayout =
vks::initializers::descriptorSetLayoutCreateInfo(
setLayoutBindings.data(),
static_cast<uint32_t>(setLayoutBindings.size()));
prepareStorageBuffers();
prepareUniformBuffers();
// Descriptor set layout
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
// Binding 0 : Particle color map
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0),
// Binding 1 : Particle gradient ramp
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1)
};
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &graphics.descriptorSetLayout));
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo =
vks::initializers::pipelineLayoutCreateInfo(
&graphics.descriptorSetLayout,
1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &graphics.pipelineLayout));
}
void setupDescriptorSet()
{
VkDescriptorSetAllocateInfo allocInfo =
vks::initializers::descriptorSetAllocateInfo(
descriptorPool,
&graphics.descriptorSetLayout,
1);
// Descriptor set
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &graphics.descriptorSetLayout, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &graphics.descriptorSet));
std::vector<VkWriteDescriptorSet> writeDescriptorSets;
@ -450,71 +390,44 @@ public:
&textures.gradient.descriptor));
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
}
void preparePipelines()
{
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
vks::initializers::pipelineInputAssemblyStateCreateInfo(
VK_PRIMITIVE_TOPOLOGY_POINT_LIST,
0,
VK_FALSE);
// Pipeline layout
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&graphics.descriptorSetLayout, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &graphics.pipelineLayout));
VkPipelineRasterizationStateCreateInfo rasterizationState =
vks::initializers::pipelineRasterizationStateCreateInfo(
VK_POLYGON_MODE_FILL,
VK_CULL_MODE_NONE,
VK_FRONT_FACE_COUNTER_CLOCKWISE,
0);
// Pipeline
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_POINT_LIST, 0, VK_FALSE);
VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_NONE, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
VkPipelineColorBlendStateCreateInfo colorBlendState = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
VkPipelineDepthStencilStateCreateInfo depthStencilState = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_FALSE, VK_FALSE, VK_COMPARE_OP_ALWAYS);
VkPipelineViewportStateCreateInfo viewportState = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
VkPipelineMultisampleStateCreateInfo multisampleState = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0);
std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
VkPipelineDynamicStateCreateInfo dynamicState = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables);
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
VkPipelineColorBlendAttachmentState blendAttachmentState =
vks::initializers::pipelineColorBlendAttachmentState(
0xf,
VK_FALSE);
VkPipelineColorBlendStateCreateInfo colorBlendState =
vks::initializers::pipelineColorBlendStateCreateInfo(
1,
&blendAttachmentState);
VkPipelineDepthStencilStateCreateInfo depthStencilState =
vks::initializers::pipelineDepthStencilStateCreateInfo(
VK_FALSE,
VK_FALSE,
VK_COMPARE_OP_ALWAYS);
VkPipelineViewportStateCreateInfo viewportState =
vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
VkPipelineMultisampleStateCreateInfo multisampleState =
vks::initializers::pipelineMultisampleStateCreateInfo(
VK_SAMPLE_COUNT_1_BIT,
0);
std::vector<VkDynamicState> dynamicStateEnables = {
VK_DYNAMIC_STATE_VIEWPORT,
VK_DYNAMIC_STATE_SCISSOR
// Vertex Input state
std::vector<VkVertexInputBindingDescription> inputBindings = {
vks::initializers::vertexInputBindingDescription(0, sizeof(Particle), VK_VERTEX_INPUT_RATE_VERTEX)
};
VkPipelineDynamicStateCreateInfo dynamicState =
vks::initializers::pipelineDynamicStateCreateInfo(
dynamicStateEnables.data(),
static_cast<uint32_t>(dynamicStateEnables.size()),
0);
// Rendering pipeline
// Load shaders
std::array<VkPipelineShaderStageCreateInfo,2> shaderStages;
std::vector<VkVertexInputAttributeDescription> inputAttributes = {
// Location 0 : Position
vks::initializers::vertexInputAttributeDescription(0, 0, VK_FORMAT_R32G32_SFLOAT, offsetof(Particle, pos)),
// Location 1 : Velocity (used for color gradient lookup)
vks::initializers::vertexInputAttributeDescription(0, 1, VK_FORMAT_R32G32B32A32_SFLOAT, offsetof(Particle, gradientPos)),
};
VkPipelineVertexInputStateCreateInfo vertexInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
vertexInputState.vertexBindingDescriptionCount = static_cast<uint32_t>(inputBindings.size());
vertexInputState.pVertexBindingDescriptions = inputBindings.data();
vertexInputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(inputAttributes.size());
vertexInputState.pVertexAttributeDescriptions = inputAttributes.data();
shaderStages[0] = loadShader(getShadersPath() + "computeparticles/particle.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getShadersPath() + "computeparticles/particle.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
vks::initializers::pipelineCreateInfo(
graphics.pipelineLayout,
renderPass,
0);
pipelineCreateInfo.pVertexInputState = &vertices.inputState;
VkGraphicsPipelineCreateInfo pipelineCreateInfo = vks::initializers::pipelineCreateInfo(graphics.pipelineLayout, renderPass, 0);
pipelineCreateInfo.pVertexInputState = &vertexInputState;
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
pipelineCreateInfo.pRasterizationState = &rasterizationState;
pipelineCreateInfo.pColorBlendState = &colorBlendState;
@ -537,15 +450,6 @@ public:
blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_DST_ALPHA;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &graphics.pipeline));
}
void prepareGraphics()
{
prepareStorageBuffers();
prepareUniformBuffers();
setupDescriptorSetLayout();
preparePipelines();
setupDescriptorSet();
// Semaphore for compute & graphics sync
VkSemaphoreCreateInfo semaphoreCreateInfo = vks::initializers::semaphoreCreateInfo();
@ -582,37 +486,18 @@ public:
VK_SHADER_STAGE_COMPUTE_BIT,
1),
};
VkDescriptorSetLayoutCreateInfo descriptorLayout =
vks::initializers::descriptorSetLayoutCreateInfo(
setLayoutBindings.data(),
static_cast<uint32_t>(setLayoutBindings.size()));
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &compute.descriptorSetLayout));
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
vks::initializers::pipelineLayoutCreateInfo(
&compute.descriptorSetLayout,
1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &compute.pipelineLayout));
VkDescriptorSetAllocateInfo allocInfo =
vks::initializers::descriptorSetAllocateInfo(
descriptorPool,
&compute.descriptorSetLayout,
1);
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &compute.descriptorSetLayout,1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &compute.descriptorSet));
std::vector<VkWriteDescriptorSet> computeWriteDescriptorSets =
{
std::vector<VkWriteDescriptorSet> computeWriteDescriptorSets = {
// Binding 0 : Particle position storage buffer
vks::initializers::writeDescriptorSet(
compute.descriptorSet,
VK_DESCRIPTOR_TYPE_STORAGE_BUFFER,
0,
&compute.storageBuffer.descriptor),
&storageBuffer.descriptor),
// Binding 1 : Uniform buffer
vks::initializers::writeDescriptorSet(
compute.descriptorSet,
@ -620,10 +505,11 @@ public:
1,
&compute.uniformBuffer.descriptor)
};
vkUpdateDescriptorSets(device, static_cast<uint32_t>(computeWriteDescriptorSets.size()), computeWriteDescriptorSets.data(), 0, NULL);
// Create pipeline
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&compute.descriptorSetLayout, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &compute.pipelineLayout));
VkComputePipelineCreateInfo computePipelineCreateInfo = vks::initializers::computePipelineCreateInfo(compute.pipelineLayout, 0);
computePipelineCreateInfo.stage = loadShader(getShadersPath() + "computeparticles/particle.comp.spv", VK_SHADER_STAGE_COMPUTE_BIT);
VK_CHECK_RESULT(vkCreateComputePipelines(device, pipelineCache, 1, &computePipelineCreateInfo, nullptr, &compute.pipeline));
@ -644,72 +530,13 @@ public:
// Build a single command buffer containing the compute dispatch commands
buildComputeCommandBuffer();
// SRS - By reordering compute and graphics within draw(), the following code is no longer needed:
// If graphics and compute queue family indices differ, acquire and immediately release the storage buffer, so that the initial acquire from the graphics command buffers are matched up properly
/*
if (graphics.queueFamilyIndex != compute.queueFamilyIndex)
{
// Create a transient command buffer for setting up the initial buffer transfer state
VkCommandBuffer transferCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, compute.commandPool, true);
VkBufferMemoryBarrier acquire_buffer_barrier =
{
VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
nullptr,
0,
VK_ACCESS_SHADER_WRITE_BIT,
graphics.queueFamilyIndex,
compute.queueFamilyIndex,
compute.storageBuffer.buffer,
0,
compute.storageBuffer.size
};
vkCmdPipelineBarrier(
transferCmd,
VK_PIPELINE_STAGE_VERTEX_INPUT_BIT,
VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
0,
0, nullptr,
1, &acquire_buffer_barrier,
0, nullptr);
VkBufferMemoryBarrier release_buffer_barrier =
{
VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
nullptr,
VK_ACCESS_SHADER_WRITE_BIT,
0,
compute.queueFamilyIndex,
graphics.queueFamilyIndex,
compute.storageBuffer.buffer,
0,
compute.storageBuffer.size
};
vkCmdPipelineBarrier(
transferCmd,
VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
VK_PIPELINE_STAGE_VERTEX_INPUT_BIT,
0,
0, nullptr,
1, &release_buffer_barrier,
0, nullptr);
vulkanDevice->flushCommandBuffer(transferCmd, compute.queue, compute.commandPool);
}
*/
}
// Prepare and initialize uniform buffer containing shader uniforms
void prepareUniformBuffers()
{
// Compute shader uniform buffer block
vulkanDevice->createBuffer(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
&compute.uniformBuffer,
sizeof(compute.ubo));
vulkanDevice->createBuffer(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &compute.uniformBuffer, sizeof(Compute::UniformData));
// Map for host access
VK_CHECK_RESULT(compute.uniformBuffer.map());
@ -718,21 +545,21 @@ public:
void updateUniformBuffers()
{
compute.ubo.deltaT = paused ? 0.0f : frameTimer * 2.5f;
compute.uniformData.deltaT = paused ? 0.0f : frameTimer * 2.5f;
if (!attachToCursor)
{
compute.ubo.destX = sin(glm::radians(timer * 360.0f)) * 0.75f;
compute.ubo.destY = 0.0f;
compute.uniformData.destX = sin(glm::radians(timer * 360.0f)) * 0.75f;
compute.uniformData.destY = 0.0f;
}
else
{
float normalizedMx = (mousePos.x - static_cast<float>(width / 2)) / static_cast<float>(width / 2);
float normalizedMy = (mousePos.y - static_cast<float>(height / 2)) / static_cast<float>(height / 2);
compute.ubo.destX = normalizedMx;
compute.ubo.destY = normalizedMy;
compute.uniformData.destX = normalizedMx;
compute.uniformData.destY = normalizedMy;
}
memcpy(compute.uniformBuffer.mapped, &compute.ubo, sizeof(compute.ubo));
memcpy(compute.uniformBuffer.mapped, &compute.uniformData, sizeof(Compute::UniformData));
}
void draw()