void generateQuad()
{
// Setup vertices for a single uv-mapped quad made from two triangles
std::vector<Vertex> vertices =
{
{ { 1.0f, 1.0f, 0.0f }, { 1.0f, 1.0f },{ 0.0f, 0.0f, 1.0f } },
{ { -1.0f, 1.0f, 0.0f }, { 0.0f, 1.0f },{ 0.0f, 0.0f, 1.0f } },
{ { -1.0f, -1.0f, 0.0f }, { 0.0f, 0.0f },{ 0.0f, 0.0f, 1.0f } },
{ { 1.0f, -1.0f, 0.0f }, { 1.0f, 0.0f },{ 0.0f, 0.0f, 1.0f } }
};
// Setup indices
std::vector<uint32_t> indices = { 0,1,2, 2,3,0 };
indexCount = static_cast<uint32_t>(indices.size());
// Create buffers
// For the sake of simplicity we won't stage the vertex data to the gpu memory
// Vertex buffer
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
&vertexBuffer,
vertices.size() * sizeof(Vertex),
vertices.data()));
// Index buffer
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
&indexBuffer,
indices.size() * sizeof(uint32_t),
indices.data()));
}
void setupDescriptorSets()
{
// Descriptor Pool
std::vector<VkDescriptorPoolSize> poolSizes = {
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 4),
};
VkDescriptorPoolCreateInfo descriptorPoolInfo =
vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
// Descriptor sets
VkDescriptorSetAllocateInfo allocInfo =
vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
// 3D object descriptor set
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.object.descriptor),
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, &uniformBuffers.params.descriptor),
};
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
}
void setupDescriptorSetLayout()
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
{
// Binding 0 : Vertex shader ubo
vks::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
VK_SHADER_STAGE_VERTEX_BIT,
0),
// Binding 1 : Geometry shader ubo
vks::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
VK_SHADER_STAGE_GEOMETRY_BIT,
1)
};
VkDescriptorSetLayoutCreateInfo descriptorLayout =
vks::initializers::descriptorSetLayoutCreateInfo(
setLayoutBindings.data(),
setLayoutBindings.size());
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
vks::initializers::pipelineLayoutCreateInfo(
&descriptorSetLayout,
1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
}
void setupDescriptorSetLayout()
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0),
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
};
VkDescriptorSetLayoutCreateInfo descriptorLayout =
vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo =
vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
std::vector<VkPushConstantRange> pushConstantRanges = {
vks::initializers::pushConstantRange(VK_SHADER_STAGE_VERTEX_BIT, sizeof(glm::vec3), 0),
vks::initializers::pushConstantRange(VK_SHADER_STAGE_FRAGMENT_BIT, sizeof(Material::PushBlock), sizeof(glm::vec3)),
};
pipelineLayoutCreateInfo.pushConstantRangeCount = 2;
pipelineLayoutCreateInfo.pPushConstantRanges = pushConstantRanges.data();
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
}
void setupDescriptors()
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0)
};
VkDescriptorSetLayoutCreateInfo descriptorLayoutCI = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayoutCI, nullptr, &descriptorSetLayout));
VkPipelineLayoutCreateInfo pipelineLayoutCI = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCI, nullptr, &pipelineLayout));
VkDescriptorPoolSize poolSize = vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2);
VkDescriptorPoolCreateInfo descriptorPoolCI = vks::initializers::descriptorPoolCreateInfo(1, &poolSize, 2);
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolCI, nullptr, &descriptorPool));
VkDescriptorSetAllocateInfo descriptorSetAI = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAI, &descriptorSets.CW));
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAI, &descriptorSets.CCW));
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
vks::initializers::writeDescriptorSet(descriptorSets.CW, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &textures.CW.descriptor),
vks::initializers::writeDescriptorSet(descriptorSets.CCW, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &textures.CCW.descriptor)
};
vkUpdateDescriptorSets(device, 2, &writeDescriptorSets[0], 0, nullptr);
}
void prepareUniformBuffers()
{
VkMemoryRequirements memReqs;
VkBufferCreateInfo bufferInfo = {};
VkMemoryAllocateInfo allocInfo = {};
allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
allocInfo.pNext = nullptr;
allocInfo.allocationSize = 0;
allocInfo.memoryTypeIndex = 0;
bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
bufferInfo.size = sizeof(uboVS);
bufferInfo.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
VK_CHECK_RESULT(vkCreateBuffer(device, &bufferInfo, nullptr, &uniformDataVS.buffer));
vkGetBufferMemoryRequirements(device, uniformDataVS.buffer, &memReqs);
allocInfo.allocationSize = memReqs.size;
allocInfo.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &allocInfo, nullptr, &(uniformDataVS.memory)));
VK_CHECK_RESULT(vkBindBufferMemory(device, uniformDataVS.buffer, uniformDataVS.memory, 0));
uniformDataVS.descriptor.buffer = uniformDataVS.buffer;
uniformDataVS.descriptor.offset = 0;
uniformDataVS.descriptor.range = sizeof(uboVS);
updateUniformBuffers();
}
// Setup pool and buffer for storing pipeline statistics results
void setupQueryResultBuffer()
{
uint32_t bufSize = 2 * sizeof(uint64_t);
VkMemoryRequirements memReqs;
VkMemoryAllocateInfo memAlloc = vks::initializers::memoryAllocateInfo();
VkBufferCreateInfo bufferCreateInfo =
vks::initializers::bufferCreateInfo(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
bufSize);
// Results are saved in a host visible buffer for easy access by the application
VK_CHECK_RESULT(vkCreateBuffer(device, &bufferCreateInfo, nullptr, &queryResult.buffer));
vkGetBufferMemoryRequirements(device, queryResult.buffer, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &queryResult.memory));
VK_CHECK_RESULT(vkBindBufferMemory(device, queryResult.buffer, queryResult.memory, 0));
// Create query pool
if (deviceFeatures.pipelineStatisticsQuery) {
VkQueryPoolCreateInfo queryPoolInfo = {};
queryPoolInfo.sType = VK_STRUCTURE_TYPE_QUERY_POOL_CREATE_INFO;
queryPoolInfo.queryType = VK_QUERY_TYPE_PIPELINE_STATISTICS;
queryPoolInfo.pipelineStatistics =
VK_QUERY_PIPELINE_STATISTIC_VERTEX_SHADER_INVOCATIONS_BIT |
VK_QUERY_PIPELINE_STATISTIC_TESSELLATION_EVALUATION_SHADER_INVOCATIONS_BIT;
queryPoolInfo.queryCount = 2;
VK_CHECK_RESULT(vkCreateQueryPool(device, &queryPoolInfo, NULL, &queryPool));
}
}
void setupDescriptorSets()
{
std::vector<VkDescriptorPoolSize> poolSizes = {
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
};
VkDescriptorPoolCreateInfo descriptorPoolCI = vks::initializers::descriptorPoolCreateInfo(poolSizes.size(), poolSizes.data(), 1);
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolCI, nullptr, &descriptorPool));
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
};
VkDescriptorSetLayoutCreateInfo descriptorLayoutCI{};
descriptorLayoutCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
descriptorLayoutCI.bindingCount = static_cast<uint32_t>(setLayoutBindings.size());
descriptorLayoutCI.pBindings = setLayoutBindings.data();
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayoutCI, nullptr, &descriptorSetLayout));
std::array<VkDescriptorSetLayout, 2> setLayouts = {
descriptorSetLayout, scene.descriptorSetLayout
};
VkPipelineLayoutCreateInfo pipelineLayoutCI = vks::initializers::pipelineLayoutCreateInfo(setLayouts.data(), 2);
VkPushConstantRange pushConstantRange = vks::initializers::pushConstantRange(VK_SHADER_STAGE_VERTEX_BIT, sizeof(glm::vec4) * 2, 0);
pipelineLayoutCI.pushConstantRangeCount = 1;
pipelineLayoutCI.pPushConstantRanges = &pushConstantRange;
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCI, nullptr, &pipelineLayout));
VkDescriptorSetAllocateInfo descriptorSetAllocateInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocateInfo, &descriptorSet));
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffer.descriptor)
};
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
}
// Create a buffer for storing the query result
// Setup a query pool
void setupQueryResultBuffer()
{
uint32_t bufSize = 2 * sizeof(uint64_t);
VkMemoryRequirements memReqs;
VkMemoryAllocateInfo memAlloc = vkTools::initializers::memoryAllocateInfo();
VkBufferCreateInfo bufferCreateInfo =
vkTools::initializers::bufferCreateInfo(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
bufSize);
// Results are saved in a host visible buffer for easy access by the application
VK_CHECK_RESULT(vkCreateBuffer(device, &bufferCreateInfo, nullptr, &queryResult.buffer));
vkGetBufferMemoryRequirements(device, queryResult.buffer, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &queryResult.memory));
VK_CHECK_RESULT(vkBindBufferMemory(device, queryResult.buffer, queryResult.memory, 0));
// Create query pool
VkQueryPoolCreateInfo queryPoolInfo = {};
queryPoolInfo.sType = VK_STRUCTURE_TYPE_QUERY_POOL_CREATE_INFO;
// Query pool will be created for occlusion queries
queryPoolInfo.queryType = VK_QUERY_TYPE_OCCLUSION;
queryPoolInfo.queryCount = 2;
VK_CHECK_RESULT(vkCreateQueryPool(device, &queryPoolInfo, NULL, &queryPool));
}
/**
* Finish command buffer recording and submit it to a queue
*
* @param commandBuffer Command buffer to flush
* @param queue Queue to submit the command buffer to
* @param free (Optional) Free the command buffer once it has been submitted (Defaults to true)
*
* @note The queue that the command buffer is submitted to must be from the same family index as the pool it was allocated from
* @note Uses a fence to ensure command buffer has finished executing
*/
void flushCommandBuffer(VkCommandBuffer commandBuffer, VkQueue queue, bool free = true)
{
if (commandBuffer == VK_NULL_HANDLE)
{
return;
}
VK_CHECK_RESULT(vkEndCommandBuffer(commandBuffer));
VkSubmitInfo submitInfo = vkTools::initializers::submitInfo();
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &commandBuffer;
// Create fence to ensure that the command buffer has finished executing
VkFenceCreateInfo fenceInfo = vkTools::initializers::fenceCreateInfo(VK_FLAGS_NONE);
VkFence fence;
VK_CHECK_RESULT(vkCreateFence(logicalDevice, &fenceInfo, nullptr, &fence));
// Submit to the queue
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, fence));
// Wait for the fence to signal that command buffer has finished executing
VK_CHECK_RESULT(vkWaitForFences(logicalDevice, 1, &fence, VK_TRUE, DEFAULT_FENCE_TIMEOUT));
vkDestroyFence(logicalDevice, fence, nullptr);
if (free)
{
vkFreeCommandBuffers(logicalDevice, commandPool, 1, &commandBuffer);
}
}
void setupDescriptorSet()
{
VkDescriptorSetAllocateInfo descriptorSetAllocInfo;
// Scene rendering
descriptorSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.scene, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets.scene));
std::vector<VkWriteDescriptorSet> offScreenWriteDescriptorSets = {
// Binding 0: Vertex shader uniform buffer
vks::initializers::writeDescriptorSet(descriptorSets.scene, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.scene.descriptor),
// Binding 1: Color gradient sampler
vks::initializers::writeDescriptorSet(descriptorSets.scene, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &textures.gradient.descriptor),
};
vkUpdateDescriptorSets(device, offScreenWriteDescriptorSets.size(), offScreenWriteDescriptorSets.data(), 0, NULL);
// Fullscreen radial blur
descriptorSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.radialBlur, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets.radialBlur));
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
// Binding 0: Vertex shader uniform buffer
vks::initializers::writeDescriptorSet(descriptorSets.radialBlur, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.blurParams.descriptor),
// Binding 0: Fragment shader texture sampler
vks::initializers::writeDescriptorSet(descriptorSets.radialBlur, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &offscreenPass.descriptor),
};
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
}
void setupDescriptorSetLayout()
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
{
// Binding 0 : Tessellation control shader ubo
vkTools::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT,
0),
// Binding 1 : Tessellation evaluation shader ubo
vkTools::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT,
1),
// Binding 2 : Fragment shader combined sampler
vkTools::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
VK_SHADER_STAGE_FRAGMENT_BIT,
2),
};
VkDescriptorSetLayoutCreateInfo descriptorLayout =
vkTools::initializers::descriptorSetLayoutCreateInfo(
setLayoutBindings.data(),
setLayoutBindings.size());
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
vkTools::initializers::pipelineLayoutCreateInfo(
&descriptorSetLayout,
1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
}
/**
* Create a buffer on the device
*
* @param usageFlags Usage flag bitmask for the buffer (i.e. index, vertex, uniform buffer)
* @param memoryPropertyFlags Memory properties for this buffer (i.e. device local, host visible, coherent)
* @param size Size of the buffer in byes
* @param buffer Pointer to the buffer handle acquired by the function
* @param memory Pointer to the memory handle acquired by the function
* @param data Pointer to the data that should be copied to the buffer after creation (optional, if not set, no data is copied over)
*
* @return VK_SUCCESS if buffer handle and memory have been created and (optionally passed) data has been copied
*/
VkResult createBuffer(VkBufferUsageFlags usageFlags, VkMemoryPropertyFlags memoryPropertyFlags, VkDeviceSize size, VkBuffer *buffer, VkDeviceMemory *memory, void *data = nullptr)
{
// Create the buffer handle
VkBufferCreateInfo bufferCreateInfo = vkTools::initializers::bufferCreateInfo(usageFlags, size);
bufferCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
VK_CHECK_RESULT(vkCreateBuffer(logicalDevice, &bufferCreateInfo, nullptr, buffer));
// Create the memory backing up the buffer handle
VkMemoryRequirements memReqs;
VkMemoryAllocateInfo memAlloc = vkTools::initializers::memoryAllocateInfo();
vkGetBufferMemoryRequirements(logicalDevice, *buffer, &memReqs);
memAlloc.allocationSize = memReqs.size;
// Find a memory type index that fits the properties of the buffer
memAlloc.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, memoryPropertyFlags);
VK_CHECK_RESULT(vkAllocateMemory(logicalDevice, &memAlloc, nullptr, memory));
// If a pointer to the buffer data has been passed, map the buffer and copy over the data
if (data != nullptr)
{
void *mapped;
VK_CHECK_RESULT(vkMapMemory(logicalDevice, *memory, 0, size, 0, &mapped));
memcpy(mapped, data, size);
vkUnmapMemory(logicalDevice, *memory);
}
// Attach the memory to the buffer object
VK_CHECK_RESULT(vkBindBufferMemory(logicalDevice, *buffer, *memory, 0));
return VK_SUCCESS;
}
void setupDescriptorSets()
{
VkDescriptorSetAllocateInfo allocInfo =
vkTools::initializers::descriptorSetAllocateInfo(
descriptorPool,
&descriptorSetLayout,
1);
// Occluder (plane)
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
std::vector<VkWriteDescriptorSet> writeDescriptorSets =
{
// Binding 0 : Vertex shader uniform buffer
vkTools::initializers::writeDescriptorSet(
descriptorSet,
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
0,
&uniformData.vsScene.descriptor)
};
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
// Teapot
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.teapot));
writeDescriptorSets[0].dstSet = descriptorSets.teapot;
writeDescriptorSets[0].pBufferInfo = &uniformData.teapot.descriptor;
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
// Sphere
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.sphere));
writeDescriptorSets[0].dstSet = descriptorSets.sphere;
writeDescriptorSets[0].pBufferInfo = &uniformData.sphere.descriptor;
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
}
void setupDescriptorSetLayout()
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings;
// Binding 0 : Particle color map
setLayoutBindings.push_back(vkTools::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
VK_SHADER_STAGE_FRAGMENT_BIT,
0));
// Binding 1 : Particle gradient ramp
setLayoutBindings.push_back(vkTools::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
VK_SHADER_STAGE_FRAGMENT_BIT,
1));
VkDescriptorSetLayoutCreateInfo descriptorLayout =
vkTools::initializers::descriptorSetLayoutCreateInfo(
setLayoutBindings.data(),
setLayoutBindings.size());
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo =
vkTools::initializers::pipelineLayoutCreateInfo(
&descriptorSetLayout,
1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
}
void setupDescriptorSetLayout()
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
{
// Binding 0 : Vertex shader uniform buffer
vks::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
VK_SHADER_STAGE_VERTEX_BIT,
0),
// Binding 1 : Fragment shader image sampler
vks::initializers::descriptorSetLayoutBinding(
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
VK_SHADER_STAGE_FRAGMENT_BIT,
1)
};
VkDescriptorSetLayoutCreateInfo descriptorLayout =
vks::initializers::descriptorSetLayoutCreateInfo(
setLayoutBindings.data(),
setLayoutBindings.size());
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
vks::initializers::pipelineLayoutCreateInfo(
&descriptorSetLayout,
1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
}
void setupDescriptorSetLayout()
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings;
VkDescriptorSetLayoutCreateInfo descriptorLayout;
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo;
// Scene rendering
setLayoutBindings = {
// Binding 0: Vertex shader uniform buffer
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
// Binding 1: Fragment shader image sampler
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
// Binding 2: Fragment shader uniform buffer
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_FRAGMENT_BIT, 2)
};
descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings.data(), static_cast<uint32_t>(setLayoutBindings.size()));
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayouts.scene));
pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayouts.scene, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayouts.scene));
// Fullscreen radial blur
setLayoutBindings = {
// Binding 0 : Vertex shader uniform buffer
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_FRAGMENT_BIT, 0),
// Binding 0: Fragment shader image sampler
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1)
};
descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings.data(), static_cast<uint32_t>(setLayoutBindings.size()));
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayouts.radialBlur));
pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayouts.radialBlur, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayouts.radialBlur));
}
void prepareUniformBuffers()
{
vulkanDevice->createBuffer(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &uniformBuffers.matrices, sizeof(uboMatrices));
vulkanDevice->createBuffer(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &uniformBuffers.params, sizeof(uboParams));
VK_CHECK_RESULT(uniformBuffers.matrices.map());
VK_CHECK_RESULT(uniformBuffers.params.map());
updateUniformBuffers();
}
void buildCommandBuffers()
{
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
VkClearValue clearValues[2];
clearValues[0].color = defaultClearColor;
clearValues[1].depthStencil = { 1.0f, 0 };
VkRenderPassBeginInfo renderPassBeginInfo = vks::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));
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
VkDeviceSize offsets[1] = { 0 };
// Skybox
if (displaySkybox)
{
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.skybox, 0, NULL);
vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &models.skybox.vertices.buffer, offsets);
vkCmdBindIndexBuffer(drawCmdBuffers[i], models.skybox.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skybox);
vkCmdDrawIndexed(drawCmdBuffers[i], models.skybox.indexCount, 1, 0, 0, 0);
}
// 3D object
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.object, 0, NULL);
vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &models.objects[models.objectIndex].vertices.buffer, offsets);
vkCmdBindIndexBuffer(drawCmdBuffers[i], models.objects[models.objectIndex].indices.buffer, 0, VK_INDEX_TYPE_UINT32);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.reflect);
vkCmdDrawIndexed(drawCmdBuffers[i], models.objects[models.objectIndex].indexCount, 1, 0, 0, 0);
drawUI(drawCmdBuffers[i]);
vkCmdEndRenderPass(drawCmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
}
}
void setupDescriptorSets()
{
VkDescriptorSetAllocateInfo allocInfo =
vkTools::initializers::descriptorSetAllocateInfo(
descriptorPool,
&descriptorSetLayouts.models,
1);
// 3D object descriptor set
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.object));
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
vkTools::initializers::writeDescriptorSet(descriptorSets.object, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.matrices.descriptor),
vkTools::initializers::writeDescriptorSet(descriptorSets.object, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &textures.envmap.descriptor),
vkTools::initializers::writeDescriptorSet(descriptorSets.object, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2, &uniformBuffers.params.descriptor),
};
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
// Sky box descriptor set
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.skybox));
writeDescriptorSets = {
vkTools::initializers::writeDescriptorSet(descriptorSets.skybox, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0,&uniformBuffers.matrices.descriptor),
vkTools::initializers::writeDescriptorSet(descriptorSets.skybox, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &textures.envmap.descriptor),
vkTools::initializers::writeDescriptorSet(descriptorSets.skybox, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2, &uniformBuffers.params.descriptor),
};
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
// Bloom filter
allocInfo = vkTools::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.bloomFilter, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.bloomFilter));
std::vector<VkDescriptorImageInfo> colorDescriptors = {
vkTools::initializers::descriptorImageInfo(offscreen.sampler, offscreen.color[0].view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL),
vkTools::initializers::descriptorImageInfo(offscreen.sampler, offscreen.color[1].view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL),
};
writeDescriptorSets = {
vkTools::initializers::writeDescriptorSet(descriptorSets.bloomFilter, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &colorDescriptors[0]),
vkTools::initializers::writeDescriptorSet(descriptorSets.bloomFilter, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &colorDescriptors[1]),
};
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
// Composition descriptor set
allocInfo = vkTools::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.composition, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.composition));
colorDescriptors = {
vkTools::initializers::descriptorImageInfo(offscreen.sampler, offscreen.color[0].view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL),
vkTools::initializers::descriptorImageInfo(offscreen.sampler, filterPass.color[0].view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL),
};
writeDescriptorSets = {
vkTools::initializers::writeDescriptorSet(descriptorSets.composition, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &colorDescriptors[0]),
vkTools::initializers::writeDescriptorSet(descriptorSets.composition, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &colorDescriptors[1]),
};
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
}
void buildCommandBuffers()
{
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
VkClearValue clearValues[2];
clearValues[0].color = { {0.5f, 0.5f, 0.5f, 0.0f} };
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));
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
VkViewport viewport = vkTools::initializers::viewport(splitScreen ? (float)width / 2.0f : (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);
vkCmdSetLineWidth(drawCmdBuffers[i], 1.0f);
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
VkDeviceSize offsets[1] = { 0 };
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.object.vertices.buf, offsets);
vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.object.indices.buf, 0, VK_INDEX_TYPE_UINT32);
if (splitScreen)
{
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, *pipelineLeft);
vkCmdDrawIndexed(drawCmdBuffers[i], meshes.object.indexCount, 1, 0, 0, 0);
viewport.x = float(width) / 2;
}
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, *pipelineRight);
vkCmdDrawIndexed(drawCmdBuffers[i], meshes.object.indexCount, 1, 0, 0, 0);
vkCmdEndRenderPass(drawCmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
}
}
void prepareUniformBuffers()
{
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
&uniformBuffer,
sizeof(uboVS)));
VK_CHECK_RESULT(uniformBuffer.map());
updateUniformBuffers();
}
void setupDescriptorSets()
{
// Image descriptor for the cube map texture
VkDescriptorImageInfo textureDescriptor =
vks::initializers::descriptorImageInfo(
cubeMap.sampler,
cubeMap.view,
cubeMap.imageLayout);
VkDescriptorSetAllocateInfo allocInfo =
vks::initializers::descriptorSetAllocateInfo(
descriptorPool,
&descriptorSetLayout,
1);
// 3D object descriptor set
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.object));
std::vector<VkWriteDescriptorSet> writeDescriptorSets =
{
// Binding 0 : Vertex shader uniform buffer
vks::initializers::writeDescriptorSet(
descriptorSets.object,
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
0,
&uniformBuffers.object.descriptor),
// Binding 1 : Fragment shader cubemap sampler
vks::initializers::writeDescriptorSet(
descriptorSets.object,
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
1,
&textureDescriptor)
};
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
// Sky box descriptor set
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.skybox));
writeDescriptorSets =
{
// Binding 0 : Vertex shader uniform buffer
vks::initializers::writeDescriptorSet(
descriptorSets.skybox,
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
0,
&uniformBuffers.skybox.descriptor),
// Binding 1 : Fragment shader cubemap sampler
vks::initializers::writeDescriptorSet(
descriptorSets.skybox,
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
1,
&textureDescriptor)
};
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
}
void createAttachment(VkFormat format, VkImageUsageFlagBits usage, FrameBufferAttachment *attachment)
{
VkImageAspectFlags aspectMask = 0;
VkImageLayout imageLayout;
attachment->format = format;
if (usage & VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT)
{
aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
imageLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
}
if (usage & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT)
{
aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT;
imageLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
}
assert(aspectMask > 0);
VkImageCreateInfo image = vkTools::initializers::imageCreateInfo();
image.imageType = VK_IMAGE_TYPE_2D;
image.format = format;
image.extent.width = offscreen.width;
image.extent.height = offscreen.height;
image.extent.depth = 1;
image.mipLevels = 1;
image.arrayLayers = 1;
image.samples = VK_SAMPLE_COUNT_1_BIT;
image.tiling = VK_IMAGE_TILING_OPTIMAL;
image.usage = usage | VK_IMAGE_USAGE_SAMPLED_BIT;
VkMemoryAllocateInfo memAlloc = vkTools::initializers::memoryAllocateInfo();
VkMemoryRequirements memReqs;
VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &attachment->image));
vkGetImageMemoryRequirements(device, attachment->image, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &attachment->mem));
VK_CHECK_RESULT(vkBindImageMemory(device, attachment->image, attachment->mem, 0));
VkImageViewCreateInfo imageView = vkTools::initializers::imageViewCreateInfo();
imageView.viewType = VK_IMAGE_VIEW_TYPE_2D;
imageView.format = format;
imageView.subresourceRange = {};
imageView.subresourceRange.aspectMask = aspectMask;
imageView.subresourceRange.baseMipLevel = 0;
imageView.subresourceRange.levelCount = 1;
imageView.subresourceRange.baseArrayLayer = 0;
imageView.subresourceRange.layerCount = 1;
imageView.image = attachment->image;
VK_CHECK_RESULT(vkCreateImageView(device, &imageView, nullptr, &attachment->view));
}
void buildCommandBuffers()
{
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
VkClearValue clearValues[2];
clearValues[0].color = defaultClearColor;
clearValues[1].depthStencil = { 1.0f, 0 };
VkRenderPassBeginInfo renderPassBeginInfo = vks::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)
{
renderPassBeginInfo.framebuffer = frameBuffers[i];
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
VkDeviceSize offsets[1] = { 0 };
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &vertexBuffer.buffer, offsets);
vkCmdBindIndexBuffer(drawCmdBuffers[i], indexBuffer.buffer, 0, VK_INDEX_TYPE_UINT32);
// Render multiple objects using different model matrices by dynamically offsetting into one uniform buffer
for (uint32_t j = 0; j < OBJECT_INSTANCES; j++)
{
// One dynamic offset per dynamic descriptor to offset into the ubo containing all model matrices
uint32_t dynamicOffset = j * static_cast<uint32_t>(dynamicAlignment);
// Bind the descriptor set for rendering a mesh using the dynamic offset
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 1, &dynamicOffset);
vkCmdDrawIndexed(drawCmdBuffers[i], indexCount, 1, 0, 0, 0);
}
vkCmdEndRenderPass(drawCmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
}
}
/**
* Update the command buffers to reflect text changes
*/
void updateCommandBuffers()
{
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
renderPassBeginInfo.renderPass = renderPass;
renderPassBeginInfo.renderArea.extent.width = *frameBufferWidth;
renderPassBeginInfo.renderArea.extent.height = *frameBufferHeight;
// None of the attachments will be cleared
renderPassBeginInfo.clearValueCount = 0;
renderPassBeginInfo.pClearValues = nullptr;
for (size_t i = 0; i < cmdBuffers.size(); ++i)
{
renderPassBeginInfo.framebuffer = *frameBuffers[i];
VK_CHECK_RESULT(vkBeginCommandBuffer(cmdBuffers[i], &cmdBufInfo));
if (vks::debugmarker::active)
{
vks::debugmarker::beginRegion(cmdBuffers[i], "Text overlay", glm::vec4(1.0f, 0.94f, 0.3f, 1.0f));
}
vkCmdBeginRenderPass(cmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
VkViewport viewport = vks::initializers::viewport((float)*frameBufferWidth, (float)*frameBufferHeight, 0.0f, 1.0f);
vkCmdSetViewport(cmdBuffers[i], 0, 1, &viewport);
VkRect2D scissor = vks::initializers::rect2D(*frameBufferWidth, *frameBufferHeight, 0, 0);
vkCmdSetScissor(cmdBuffers[i], 0, 1, &scissor);
vkCmdBindPipeline(cmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
vkCmdBindDescriptorSets(cmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
VkDeviceSize offsets = 0;
vkCmdBindVertexBuffers(cmdBuffers[i], 0, 1, &vertexBuffer.buffer, &offsets);
vkCmdBindVertexBuffers(cmdBuffers[i], 1, 1, &vertexBuffer.buffer, &offsets);
for (uint32_t j = 0; j < numLetters; j++)
{
vkCmdDraw(cmdBuffers[i], 4, 1, j * 4, 0);
}
vkCmdEndRenderPass(cmdBuffers[i]);
if (vks::debugmarker::active)
{
vks::debugmarker::endRegion(cmdBuffers[i]);
}
VK_CHECK_RESULT(vkEndCommandBuffer(cmdBuffers[i]));
}
}
// Prepare and initialize uniform buffer containing shader uniforms
void prepareUniformBuffers()
{
// Create the vertex shader uniform buffer block
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
&uniformBuffer,
sizeof(uboVS)));
// Map persistent
VK_CHECK_RESULT(uniformBuffer.map());
updateUniformBuffers();
}
// Prepare and initialize uniform buffer containing shader uniforms
void prepareUniformBuffers()
{
// Allocate data for the dynamic uniform buffer object
// We allocate this manually as the alignment of the offset differs between GPUs
// Calculate required alignment depending on device limits
size_t uboAlignment = vulkanDevice->properties.limits.minUniformBufferOffsetAlignment;
dynamicAlignment = (sizeof(glm::mat4) / uboAlignment) * uboAlignment + ((sizeof(glm::mat4) % uboAlignment) > 0 ? uboAlignment : 0);
size_t bufferSize = OBJECT_INSTANCES * dynamicAlignment;
uboDataDynamic.model = (glm::mat4*)alignedAlloc(bufferSize, dynamicAlignment);
assert(uboDataDynamic.model);
std::cout << "minUniformBufferOffsetAlignment = " << uboAlignment << std::endl;
std::cout << "dynamicAlignment = " << dynamicAlignment << std::endl;
// Vertex shader uniform buffer block
// Static shared uniform buffer object with projection and view matrix
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
&uniformBuffers.view,
sizeof(uboVS)));
// Uniform buffer object with per-object matrices
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
&uniformBuffers.dynamic,
bufferSize));
// Map persistent
VK_CHECK_RESULT(uniformBuffers.view.map());
VK_CHECK_RESULT(uniformBuffers.dynamic.map());
// Prepare per-object matrices with offsets and random rotations
std::mt19937 rndGen(static_cast<uint32_t>(time(0)));
std::normal_distribution<float> rndDist(-1.0f, 1.0f);
for (uint32_t i = 0; i < OBJECT_INSTANCES; i++)
{
rotations[i] = glm::vec3(rndDist(rndGen), rndDist(rndGen), rndDist(rndGen)) * 2.0f * (float)M_PI;
rotationSpeeds[i] = glm::vec3(rndDist(rndGen), rndDist(rndGen), rndDist(rndGen));
}
updateUniformBuffers();
updateDynamicUniformBuffer(true);
}
/**
* Submit the text command buffers to a queue
*/
void submit(VkQueue queue, uint32_t bufferindex, VkSubmitInfo submitInfo)
{
if (!visible)
{
return;
}
submitInfo.pCommandBuffers = &cmdBuffers[bufferindex];
submitInfo.commandBufferCount = 1;
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, fence));
VK_CHECK_RESULT(vkWaitForFences(vulkanDevice->logicalDevice, 1, &fence, VK_TRUE, UINT64_MAX));
VK_CHECK_RESULT(vkResetFences(vulkanDevice->logicalDevice, 1, &fence));
}
VkShaderModule loadShaderGLSL(const char *fileName, VkDevice device, VkShaderStageFlagBits stage)
{
std::string shaderSrc = readTextFile(fileName);
const char *shaderCode = shaderSrc.c_str();
size_t size = strlen(shaderCode);
assert(size > 0);
VkShaderModule shaderModule;
VkShaderModuleCreateInfo moduleCreateInfo;
moduleCreateInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
moduleCreateInfo.pNext = NULL;
moduleCreateInfo.codeSize = 3 * sizeof(uint32_t) + size + 1;
moduleCreateInfo.pCode = (uint32_t*)malloc(moduleCreateInfo.codeSize);
moduleCreateInfo.flags = 0;
// Magic SPV number
((uint32_t *)moduleCreateInfo.pCode)[0] = 0x07230203;
((uint32_t *)moduleCreateInfo.pCode)[1] = 0;
((uint32_t *)moduleCreateInfo.pCode)[2] = stage;
memcpy(((uint32_t *)moduleCreateInfo.pCode + 3), shaderCode, size + 1);
VK_CHECK_RESULT(vkCreateShaderModule(device, &moduleCreateInfo, NULL, &shaderModule));
return shaderModule;
}
