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Replace dedicated offscreen command buffer and complicated synchronization with single command buffer and sync via sub pass dependencies

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Proper stage and access masks
Code cleanup
This commit is contained in:
Sascha Willems 2019-04-02 20:05:21 +02:00
parent cd3ef3e713
commit 71e4d68548
1 changed files with 169 additions and 310 deletions
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369
examples/bloom/bloom.cpp
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@ -1,7 +1,7 @@
/* /*
* Vulkan Example - Implements a separable two-pass fullscreen blur (also known as bloom) * Vulkan Example - Implements a separable two-pass fullscreen blur (also known as bloom)
* *
* Copyright (C) 2016 by Sascha Willems - www.saschawillems.de * Copyright (C) Sascha Willems - www.saschawillems.de
* *
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT) * This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
*/ */
@ -23,8 +23,7 @@
#include "VulkanModel.hpp" #include "VulkanModel.hpp"
#include "VulkanBuffer.hpp" #include "VulkanBuffer.hpp"
#define VERTEX_BUFFER_BIND_ID 0 #define ENABLE_VALIDATION true
#define ENABLE_VALIDATION false
// Offscreen frame buffer properties // Offscreen frame buffer properties
#define FB_DIM 256 #define FB_DIM 256
@ -53,12 +52,6 @@ public:
vks::Model skyBox; vks::Model skyBox;
} models; } models;
struct {
VkPipelineVertexInputStateCreateInfo inputState;
std::vector<VkVertexInputBindingDescription> bindingDescriptions;
std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
} vertices;
struct { struct {
vks::Buffer scene; vks::Buffer scene;
vks::Buffer skyBox; vks::Buffer skyBox;
@ -121,9 +114,6 @@ public:
int32_t width, height; int32_t width, height;
VkRenderPass renderPass; VkRenderPass renderPass;
VkSampler sampler; VkSampler sampler;
VkCommandBuffer commandBuffer = VK_NULL_HANDLE;
// Semaphore used to synchronize between offscreen and final scene rendering
VkSemaphore semaphore = VK_NULL_HANDLE;
std::array<FrameBuffer, 2> framebuffers; std::array<FrameBuffer, 2> framebuffers;
} offscreenPass; } offscreenPass;
@ -159,8 +149,6 @@ public:
vkDestroyFramebuffer(device, framebuffer.framebuffer, nullptr); vkDestroyFramebuffer(device, framebuffer.framebuffer, nullptr);
} }
vkDestroyRenderPass(device, offscreenPass.renderPass, nullptr); vkDestroyRenderPass(device, offscreenPass.renderPass, nullptr);
vkFreeCommandBuffers(device, cmdPool, 1, &offscreenPass.commandBuffer);
vkDestroySemaphore(device, offscreenPass.semaphore, nullptr);
vkDestroyPipeline(device, pipelines.blurHorz, nullptr); vkDestroyPipeline(device, pipelines.blurHorz, nullptr);
vkDestroyPipeline(device, pipelines.blurVert, nullptr); vkDestroyPipeline(device, pipelines.blurVert, nullptr);
@ -321,18 +309,18 @@ public:
dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL; dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
dependencies[0].dstSubpass = 0; dependencies[0].dstSubpass = 0;
dependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; dependencies[0].srcStageMask = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT; dependencies[0].srcAccessMask = VK_ACCESS_SHADER_READ_BIT;
dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT; dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
dependencies[1].srcSubpass = 0; dependencies[1].srcSubpass = 0;
dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL; dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; dependencies[1].dstStageMask = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; dependencies[1].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT; dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
// Create the actual renderpass // Create the actual renderpass
@ -367,30 +355,25 @@ public:
prepareOffscreenFramebuffer(&offscreenPass.framebuffers[1], FB_COLOR_FORMAT, fbDepthFormat); prepareOffscreenFramebuffer(&offscreenPass.framebuffers[1], FB_COLOR_FORMAT, fbDepthFormat);
} }
// Sets up the command buffer that renders the scene to the offscreen frame buffer void buildCommandBuffers()
// The blur method used in this example is multi pass and renders the vertical
// blur first and then the horizontal one.
// While it's possible to blur in one pass, this method is widely used as it
// requires far less samples to generate the blur
void buildOffscreenCommandBuffer()
{ {
if (offscreenPass.commandBuffer == VK_NULL_HANDLE)
{
offscreenPass.commandBuffer = VulkanExampleBase::createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, false);
}
if (offscreenPass.semaphore == VK_NULL_HANDLE)
{
VkSemaphoreCreateInfo semaphoreCreateInfo = vks::initializers::semaphoreCreateInfo();
VK_CHECK_RESULT(vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &offscreenPass.semaphore));
}
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo(); VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
// First pass: Render glow parts of the model (separate mesh)
// -------------------------------------------------------------------------------------------------------
VkClearValue clearValues[2]; VkClearValue clearValues[2];
VkViewport viewport;
VkRect2D scissor;
VkDeviceSize offsets[1] = { 0 };
/*
The blur method used in this example is multi pass and renders the vertical blur first and then the horizontal one
While it's possible to blur in one pass, this method is widely used as it requires far less samples to generate the blur
*/
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
{
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
if (bloom) {
clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } }; clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } };
clearValues[1].depthStencil = { 1.0f, 0 }; clearValues[1].depthStencil = { 1.0f, 0 };
@ -402,77 +385,68 @@ public:
renderPassBeginInfo.clearValueCount = 2; renderPassBeginInfo.clearValueCount = 2;
renderPassBeginInfo.pClearValues = clearValues; renderPassBeginInfo.pClearValues = clearValues;
VK_CHECK_RESULT(vkBeginCommandBuffer(offscreenPass.commandBuffer, &cmdBufInfo)); viewport = vks::initializers::viewport((float)offscreenPass.width, (float)offscreenPass.height, 0.0f, 1.0f);
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
VkViewport viewport = vks::initializers::viewport((float)offscreenPass.width, (float)offscreenPass.height, 0.0f, 1.0f); scissor = vks::initializers::rect2D(offscreenPass.width, offscreenPass.height, 0, 0);
vkCmdSetViewport(offscreenPass.commandBuffer, 0, 1, &viewport); vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
VkRect2D scissor = vks::initializers::rect2D(offscreenPass.width, offscreenPass.height, 0, 0); /*
vkCmdSetScissor(offscreenPass.commandBuffer, 0, 1, &scissor); First render pass: Render glow parts of the model (separate mesh) to an offscreen frame buffer
*/
vkCmdBeginRenderPass(offscreenPass.commandBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE); vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindDescriptorSets(offscreenPass.commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.scene, 0, NULL); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.scene, 0, NULL);
vkCmdBindPipeline(offscreenPass.commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.glowPass); vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.glowPass);
VkDeviceSize offsets[1] = { 0 }; VkDeviceSize offsets[1] = { 0 };
vkCmdBindVertexBuffers(offscreenPass.commandBuffer, VERTEX_BUFFER_BIND_ID, 1, &models.ufoGlow.vertices.buffer, offsets); vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &models.ufoGlow.vertices.buffer, offsets);
vkCmdBindIndexBuffer(offscreenPass.commandBuffer, models.ufoGlow.indices.buffer, 0, VK_INDEX_TYPE_UINT32); vkCmdBindIndexBuffer(drawCmdBuffers[i], models.ufoGlow.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
vkCmdDrawIndexed(offscreenPass.commandBuffer, models.ufoGlow.indexCount, 1, 0, 0, 0); vkCmdDrawIndexed(drawCmdBuffers[i], models.ufoGlow.indexCount, 1, 0, 0, 0);
vkCmdEndRenderPass(offscreenPass.commandBuffer); vkCmdEndRenderPass(drawCmdBuffers[i]);
// Second pass: Render contents of the first pass into second framebuffer and apply a vertical blur /*
// This is the first blur pass, the horizontal blur is applied when rendering on top of the scene Second render pass: Vertical blur
// -------------------------------------------------------------------------------------------------------
Render contents of the first pass into a second framebuffer and apply a vertical blur
This is the first blur pass, the horizontal blur is applied when rendering on top of the scene
*/
renderPassBeginInfo.framebuffer = offscreenPass.framebuffers[1].framebuffer; renderPassBeginInfo.framebuffer = offscreenPass.framebuffers[1].framebuffer;
vkCmdBeginRenderPass(offscreenPass.commandBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE); vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindDescriptorSets(offscreenPass.commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.blur, 0, 1, &descriptorSets.blurVert, 0, NULL); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.blur, 0, 1, &descriptorSets.blurVert, 0, NULL);
vkCmdBindPipeline(offscreenPass.commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.blurVert); vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.blurVert);
vkCmdDraw(offscreenPass.commandBuffer, 3, 1, 0, 0); vkCmdDraw(drawCmdBuffers[i], 3, 1, 0, 0);
vkCmdEndRenderPass(offscreenPass.commandBuffer); vkCmdEndRenderPass(drawCmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(offscreenPass.commandBuffer));
} }
void reBuildCommandBuffers() /*
{ Note: Explicit synchronization is not required between the render pass, as this is done implicit via sub pass dependencies
if (!checkCommandBuffers()) */
{
destroyCommandBuffers();
createCommandBuffers();
}
buildCommandBuffers();
}
void buildCommandBuffers() /*
{ Third render pass: Scene rendering with applied vertical blur
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
VkClearValue clearValues[2]; Renders the scene and the (vertically blurred) contents of the second framebuffer and apply a horizontal blur
*/
{
clearValues[0].color = defaultClearColor; clearValues[0].color = defaultClearColor;
clearValues[1].depthStencil = { 1.0f, 0 }; clearValues[1].depthStencil = { 1.0f, 0 };
VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo(); VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
renderPassBeginInfo.renderPass = renderPass; renderPassBeginInfo.renderPass = renderPass;
renderPassBeginInfo.renderArea.offset.x = 0; renderPassBeginInfo.framebuffer = frameBuffers[i];
renderPassBeginInfo.renderArea.offset.y = 0;
renderPassBeginInfo.renderArea.extent.width = width; renderPassBeginInfo.renderArea.extent.width = width;
renderPassBeginInfo.renderArea.extent.height = height; renderPassBeginInfo.renderArea.extent.height = height;
renderPassBeginInfo.clearValueCount = 2; renderPassBeginInfo.clearValueCount = 2;
renderPassBeginInfo.pClearValues = clearValues; 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); vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f); VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
@ -487,7 +461,7 @@ public:
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.skyBox, 0, NULL); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.skyBox, 0, NULL);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skyBox); vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skyBox);
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &models.skyBox.vertices.buffer, offsets); vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &models.skyBox.vertices.buffer, offsets);
vkCmdBindIndexBuffer(drawCmdBuffers[i], models.skyBox.indices.buffer, 0, VK_INDEX_TYPE_UINT32); vkCmdBindIndexBuffer(drawCmdBuffers[i], models.skyBox.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
vkCmdDrawIndexed(drawCmdBuffers[i], models.skyBox.indexCount, 1, 0, 0, 0); vkCmdDrawIndexed(drawCmdBuffers[i], models.skyBox.indexCount, 1, 0, 0, 0);
@ -495,13 +469,10 @@ public:
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.scene, 0, NULL); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.scene, 0, NULL);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.phongPass); vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.phongPass);
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &models.ufo.vertices.buffer, offsets); vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &models.ufo.vertices.buffer, offsets);
vkCmdBindIndexBuffer(drawCmdBuffers[i], models.ufo.indices.buffer, 0, VK_INDEX_TYPE_UINT32); vkCmdBindIndexBuffer(drawCmdBuffers[i], models.ufo.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
vkCmdDrawIndexed(drawCmdBuffers[i], models.ufo.indexCount, 1, 0, 0, 0); vkCmdDrawIndexed(drawCmdBuffers[i], models.ufo.indexCount, 1, 0, 0, 0);
// Render vertical blurred scene applying a horizontal blur
// Render the (vertically blurred) contents of the second framebuffer and apply a horizontal blur
// -------------------------------------------------------------------------------------------------------
if (bloom) if (bloom)
{ {
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.blur, 0, 1, &descriptorSets.blurHorz, 0, NULL); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.blur, 0, 1, &descriptorSets.blurHorz, 0, NULL);
@ -513,12 +484,9 @@ public:
vkCmdEndRenderPass(drawCmdBuffers[i]); vkCmdEndRenderPass(drawCmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
} }
if (bloom) VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
{
buildOffscreenCommandBuffer();
} }
} }
@ -530,55 +498,6 @@ public:
textures.cubemap.loadFromFile(getAssetPath() + "textures/cubemap_space.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue); textures.cubemap.loadFromFile(getAssetPath() + "textures/cubemap_space.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
} }
void setupVertexDescriptions()
{
// Binding description
// Same for all meshes used in this example
vertices.bindingDescriptions.resize(1);
vertices.bindingDescriptions[0] =
vks::initializers::vertexInputBindingDescription(
VERTEX_BUFFER_BIND_ID,
vertexLayout.stride(),
VK_VERTEX_INPUT_RATE_VERTEX);
// Attribute descriptions
vertices.attributeDescriptions.resize(4);
// Location 0 : Position
vertices.attributeDescriptions[0] =
vks::initializers::vertexInputAttributeDescription(
VERTEX_BUFFER_BIND_ID,
0,
VK_FORMAT_R32G32B32_SFLOAT,
0);
// Location 1 : Texture coordinates
vertices.attributeDescriptions[1] =
vks::initializers::vertexInputAttributeDescription(
VERTEX_BUFFER_BIND_ID,
1,
VK_FORMAT_R32G32_SFLOAT,
sizeof(float) * 3);
// Location 2 : Color
vertices.attributeDescriptions[2] =
vks::initializers::vertexInputAttributeDescription(
VERTEX_BUFFER_BIND_ID,
2,
VK_FORMAT_R32G32B32_SFLOAT,
sizeof(float) * 5);
// Location 3 : Normal
vertices.attributeDescriptions[3] =
vks::initializers::vertexInputAttributeDescription(
VERTEX_BUFFER_BIND_ID,
3,
VK_FORMAT_R32G32B32_SFLOAT,
sizeof(float) * 8);
vertices.inputState = vks::initializers::pipelineVertexInputStateCreateInfo();
vertices.inputState.vertexBindingDescriptionCount = vertices.bindingDescriptions.size();
vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
vertices.inputState.vertexAttributeDescriptionCount = vertices.attributeDescriptions.size();
vertices.inputState.pVertexAttributeDescriptions = vertices.attributeDescriptions.data();
}
void setupDescriptorPool() void setupDescriptorPool()
{ {
std::vector<VkDescriptorPoolSize> poolSizes = std::vector<VkDescriptorPoolSize> poolSizes =
@ -667,78 +586,36 @@ public:
void preparePipelines() void preparePipelines()
{ {
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
vks::initializers::pipelineInputAssemblyStateCreateInfo( VkPipelineRasterizationStateCreateInfo rasterizationStateCI = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_NONE, VK_FRONT_FACE_CLOCKWISE, 0);
VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
0, VkPipelineColorBlendStateCreateInfo colorBlendStateCI = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
VK_FALSE); VkPipelineDepthStencilStateCreateInfo depthStencilStateCI = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
VkPipelineViewportStateCreateInfo viewportStateCI = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
VkPipelineRasterizationStateCreateInfo rasterizationState = VkPipelineMultisampleStateCreateInfo multisampleStateCI = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0);
vks::initializers::pipelineRasterizationStateCreateInfo( std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
VK_POLYGON_MODE_FILL, VkPipelineDynamicStateCreateInfo dynamicStateCI = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables.data(), dynamicStateEnables.size(), 0);
VK_CULL_MODE_NONE,
VK_FRONT_FACE_CLOCKWISE,
0);
VkPipelineColorBlendAttachmentState blendAttachmentState =
vks::initializers::pipelineColorBlendAttachmentState(
0xf,
VK_FALSE);
VkPipelineColorBlendStateCreateInfo colorBlendState =
vks::initializers::pipelineColorBlendStateCreateInfo(
1,
&blendAttachmentState);
VkPipelineDepthStencilStateCreateInfo depthStencilState =
vks::initializers::pipelineDepthStencilStateCreateInfo(
VK_TRUE,
VK_TRUE,
VK_COMPARE_OP_LESS_OR_EQUAL);
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.data(),
dynamicStateEnables.size(),
0);
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages; std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
VkGraphicsPipelineCreateInfo pipelineCreateInfo = VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayouts.blur, renderPass, 0);
vks::initializers::pipelineCreateInfo( pipelineCI.pInputAssemblyState = &inputAssemblyStateCI;
pipelineLayouts.blur, pipelineCI.pRasterizationState = &rasterizationStateCI;
renderPass, pipelineCI.pColorBlendState = &colorBlendStateCI;
0); pipelineCI.pMultisampleState = &multisampleStateCI;
pipelineCI.pViewportState = &viewportStateCI;
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState; pipelineCI.pDepthStencilState = &depthStencilStateCI;
pipelineCreateInfo.pRasterizationState = &rasterizationState; pipelineCI.pDynamicState = &dynamicStateCI;
pipelineCreateInfo.pColorBlendState = &colorBlendState; pipelineCI.stageCount = shaderStages.size();
pipelineCreateInfo.pMultisampleState = &multisampleState; pipelineCI.pStages = shaderStages.data();
pipelineCreateInfo.pViewportState = &viewportState;
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
pipelineCreateInfo.pDynamicState = &dynamicState;
pipelineCreateInfo.stageCount = shaderStages.size();
pipelineCreateInfo.pStages = shaderStages.data();
// Blur pipelines // Blur pipelines
shaderStages[0] = loadShader(getAssetPath() + "shaders/bloom/gaussblur.vert.spv", VK_SHADER_STAGE_VERTEX_BIT); shaderStages[0] = loadShader(getAssetPath() + "shaders/bloom/gaussblur.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getAssetPath() + "shaders/bloom/gaussblur.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT); shaderStages[1] = loadShader(getAssetPath() + "shaders/bloom/gaussblur.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
// Empty vertex input state // Empty vertex input state
VkPipelineVertexInputStateCreateInfo emptyInputState = vks::initializers::pipelineVertexInputStateCreateInfo(); VkPipelineVertexInputStateCreateInfo emptyInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
pipelineCreateInfo.pVertexInputState = &emptyInputState; pipelineCI.pVertexInputState = &emptyInputState;
pipelineCreateInfo.layout = pipelineLayouts.blur; pipelineCI.layout = pipelineLayouts.blur;
// Additive blending // Additive blending
blendAttachmentState.colorWriteMask = 0xF; blendAttachmentState.colorWriteMask = 0xF;
blendAttachmentState.blendEnable = VK_TRUE; blendAttachmentState.blendEnable = VK_TRUE;
@ -755,37 +632,52 @@ public:
VkSpecializationInfo specializationInfo = vks::initializers::specializationInfo(1, &specializationMapEntry, sizeof(uint32_t), &blurdirection); VkSpecializationInfo specializationInfo = vks::initializers::specializationInfo(1, &specializationMapEntry, sizeof(uint32_t), &blurdirection);
shaderStages[1].pSpecializationInfo = &specializationInfo; shaderStages[1].pSpecializationInfo = &specializationInfo;
// Vertical blur pipeline // Vertical blur pipeline
pipelineCreateInfo.renderPass = offscreenPass.renderPass; pipelineCI.renderPass = offscreenPass.renderPass;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.blurVert)); VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.blurVert));
// Horizontal blur pipeline // Horizontal blur pipeline
blurdirection = 1; blurdirection = 1;
pipelineCreateInfo.renderPass = renderPass; pipelineCI.renderPass = renderPass;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.blurHorz)); VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.blurHorz));
// Phong pass (3D model) // Phong pass (3D model)
pipelineCreateInfo.layout = pipelineLayouts.scene; // Vertex bindings and attributes
pipelineCreateInfo.pVertexInputState = &vertices.inputState; std::vector<VkVertexInputBindingDescription> vertexInputBindings = {
vks::initializers::vertexInputBindingDescription(0, vertexLayout.stride(), VK_VERTEX_INPUT_RATE_VERTEX),
};
std::vector<VkVertexInputAttributeDescription> vertexInputAttributes = {
vks::initializers::vertexInputAttributeDescription(0, 0, VK_FORMAT_R32G32B32_SFLOAT, 0), // Position
vks::initializers::vertexInputAttributeDescription(0, 1, VK_FORMAT_R32G32_SFLOAT, sizeof(float) * 3), // Texture coordinates
vks::initializers::vertexInputAttributeDescription(0, 2, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 5), // Color
vks::initializers::vertexInputAttributeDescription(0, 3, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 8), // Normal
};
VkPipelineVertexInputStateCreateInfo vertexInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
vertexInputState.vertexBindingDescriptionCount = static_cast<uint32_t>(vertexInputBindings.size());
vertexInputState.pVertexBindingDescriptions = vertexInputBindings.data();
vertexInputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertexInputAttributes.size());
vertexInputState.pVertexAttributeDescriptions = vertexInputAttributes.data();
pipelineCI.pVertexInputState = &vertexInputState;
pipelineCI.layout = pipelineLayouts.scene;
shaderStages[0] = loadShader(getAssetPath() + "shaders/bloom/phongpass.vert.spv", VK_SHADER_STAGE_VERTEX_BIT); shaderStages[0] = loadShader(getAssetPath() + "shaders/bloom/phongpass.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getAssetPath() + "shaders/bloom/phongpass.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT); shaderStages[1] = loadShader(getAssetPath() + "shaders/bloom/phongpass.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
blendAttachmentState.blendEnable = VK_FALSE; blendAttachmentState.blendEnable = VK_FALSE;
depthStencilState.depthWriteEnable = VK_TRUE; depthStencilStateCI.depthWriteEnable = VK_TRUE;
rasterizationState.cullMode = VK_CULL_MODE_BACK_BIT; rasterizationStateCI.cullMode = VK_CULL_MODE_BACK_BIT;
pipelineCreateInfo.renderPass = renderPass; pipelineCI.renderPass = renderPass;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.phongPass)); VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.phongPass));
// Color only pass (offscreen blur base) // Color only pass (offscreen blur base)
shaderStages[0] = loadShader(getAssetPath() + "shaders/bloom/colorpass.vert.spv", VK_SHADER_STAGE_VERTEX_BIT); shaderStages[0] = loadShader(getAssetPath() + "shaders/bloom/colorpass.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getAssetPath() + "shaders/bloom/colorpass.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT); shaderStages[1] = loadShader(getAssetPath() + "shaders/bloom/colorpass.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
pipelineCreateInfo.renderPass = offscreenPass.renderPass; pipelineCI.renderPass = offscreenPass.renderPass;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.glowPass)); VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.glowPass));
// Skybox (cubemap) // Skybox (cubemap)
shaderStages[0] = loadShader(getAssetPath() + "shaders/bloom/skybox.vert.spv", VK_SHADER_STAGE_VERTEX_BIT); shaderStages[0] = loadShader(getAssetPath() + "shaders/bloom/skybox.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getAssetPath() + "shaders/bloom/skybox.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT); shaderStages[1] = loadShader(getAssetPath() + "shaders/bloom/skybox.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
depthStencilState.depthWriteEnable = VK_FALSE; depthStencilStateCI.depthWriteEnable = VK_FALSE;
rasterizationState.cullMode = VK_CULL_MODE_FRONT_BIT; rasterizationStateCI.cullMode = VK_CULL_MODE_FRONT_BIT;
pipelineCreateInfo.renderPass = renderPass; pipelineCI.renderPass = renderPass;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.skyBox)); VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.skyBox));
} }
// Prepare and initialize uniform buffer containing shader uniforms // Prepare and initialize uniform buffer containing shader uniforms
@ -852,36 +744,9 @@ public:
void draw() void draw()
{ {
VulkanExampleBase::prepareFrame(); VulkanExampleBase::prepareFrame();
// The scene render command buffer has to wait for the offscreen rendering to be finished before we can use the framebuffer
// color image for sampling during final rendering
// To ensure this we use a dedicated offscreen synchronization semaphore that will be signaled when offscreen rendering has been finished
// This is necessary as an implementation may start both command buffers at the same time, there is no guarantee
// that command buffers will be executed in the order they have been submitted by the application
// Offscreen rendering
// Wait for swap chain presentation to finish
submitInfo.pWaitSemaphores = &semaphores.presentComplete;
// Signal ready with offscreen semaphore
submitInfo.pSignalSemaphores = &offscreenPass.semaphore;
// Submit work
submitInfo.commandBufferCount = 1; submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &offscreenPass.commandBuffer;
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
// Scene rendering
// Wait for offscreen semaphore
submitInfo.pWaitSemaphores = &offscreenPass.semaphore;
// Signal ready with render complete semaphpre
submitInfo.pSignalSemaphores = &semaphores.renderComplete;
// Submit work
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer]; submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE)); VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
VulkanExampleBase::submitFrame(); VulkanExampleBase::submitFrame();
} }
@ -889,7 +754,6 @@ public:
{ {
VulkanExampleBase::prepare(); VulkanExampleBase::prepare();
loadAssets(); loadAssets();
setupVertexDescriptions();
prepareUniformBuffers(); prepareUniformBuffers();
prepareOffscreen(); prepareOffscreen();
setupDescriptorSetLayout(); setupDescriptorSetLayout();
@ -905,17 +769,12 @@ public:
if (!prepared) if (!prepared)
return; return;
draw(); draw();
if (!paused) if (!paused || camera.updated)
{ {
updateUniformBuffersScene(); updateUniformBuffersScene();
} }
} }
virtual void viewChanged()
{
updateUniformBuffersScene();
}
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay) virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
{ {
if (overlay->header("Settings")) { if (overlay->header("Settings")) {