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Code cleanup, simplified the sample

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This commit is contained in:
Sascha Willems 2024-01-20 14:04:23 +01:00
parent dfcc55b6d5
commit 5b8f09302e
2 changed files with 141 additions and 370 deletions
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56
examples/pbribl/pbribl.cpp
View file

@ -1,6 +1,8 @@
/* /*
* Vulkan Example - Physical based rendering with image based lighting * Vulkan Example - Physical based rendering with image based lighting
* *
* This sample adds imaged based lighting from an environment map to the PBR equation
*
* Copyright (C) 2016-2023 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) * This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
@ -11,8 +13,6 @@
#include "vulkanexamplebase.h" #include "vulkanexamplebase.h"
#include "VulkanglTFModel.h" #include "VulkanglTFModel.h"
#define GRID_DIM 7
struct Material { struct Material {
// Parameter block used as push constant block // Parameter block used as push constant block
struct PushBlock { struct PushBlock {
@ -69,17 +69,17 @@ public:
} uboParams; } uboParams;
struct { struct {
VkPipeline skybox; VkPipeline skybox{ VK_NULL_HANDLE };
VkPipeline pbr; VkPipeline pbr{ VK_NULL_HANDLE };
} pipelines; } pipelines;
struct { struct {
VkDescriptorSet object; VkDescriptorSet object{ VK_NULL_HANDLE };
VkDescriptorSet skybox; VkDescriptorSet skybox{ VK_NULL_HANDLE };
} descriptorSets; } descriptorSets;
VkPipelineLayout pipelineLayout; VkPipelineLayout pipelineLayout{ VK_NULL_HANDLE };
VkDescriptorSetLayout descriptorSetLayout; VkDescriptorSetLayout descriptorSetLayout{ VK_NULL_HANDLE };
// Default materials to select from // Default materials to select from
std::vector<Material> materials; std::vector<Material> materials;
@ -125,6 +125,7 @@ public:
~VulkanExample() ~VulkanExample()
{ {
if (device) {
vkDestroyPipeline(device, pipelines.skybox, nullptr); vkDestroyPipeline(device, pipelines.skybox, nullptr);
vkDestroyPipeline(device, pipelines.pbr, nullptr); vkDestroyPipeline(device, pipelines.pbr, nullptr);
vkDestroyPipelineLayout(device, pipelineLayout, nullptr); vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
@ -137,6 +138,7 @@ public:
textures.prefilteredCube.destroy(); textures.prefilteredCube.destroy();
textures.lutBrdf.destroy(); textures.lutBrdf.destroy();
} }
}
virtual void getEnabledFeatures() virtual void getEnabledFeatures()
{ {
@ -189,11 +191,9 @@ public:
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.object, 0, NULL); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.object, 0, NULL);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.pbr); vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.pbr);
// Render a line of objects with the selected material and vary roughness/metallic material parameters
Material mat = materials[materialIndex]; Material mat = materials[materialIndex];
const uint32_t objcount = 10;
#define SINGLE_ROW 1
#ifdef SINGLE_ROW
uint32_t objcount = 10;
for (uint32_t x = 0; x < objcount; x++) { for (uint32_t x = 0; x < objcount; x++) {
glm::vec3 pos = glm::vec3(float(x - (objcount / 2.0f)) * 2.15f, 0.0f, 0.0f); glm::vec3 pos = glm::vec3(float(x - (objcount / 2.0f)) * 2.15f, 0.0f, 0.0f);
mat.params.roughness = 1.0f-glm::clamp((float)x / (float)objcount, 0.005f, 1.0f); mat.params.roughness = 1.0f-glm::clamp((float)x / (float)objcount, 0.005f, 1.0f);
@ -203,18 +203,6 @@ public:
models.objects[models.objectIndex].draw(drawCmdBuffers[i]); models.objects[models.objectIndex].draw(drawCmdBuffers[i]);
} }
#else
for (uint32_t y = 0; y < GRID_DIM; y++) {
mat.params.metallic = (float)y / (float)(GRID_DIM);
for (uint32_t x = 0; x < GRID_DIM; x++) {
glm::vec3 pos = glm::vec3(float(x - (GRID_DIM / 2.0f)) * 2.5f, 0.0f, float(y - (GRID_DIM / 2.0f)) * 2.5f);
vkCmdPushConstants(drawCmdBuffers[i], pipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(glm::vec3), &pos);
mat.params.roughness = glm::clamp((float)x / (float)(GRID_DIM), 0.05f, 1.0f);
vkCmdPushConstants(drawCmdBuffers[i], pipelineLayout, VK_SHADER_STAGE_FRAGMENT_BIT, sizeof(glm::vec3), sizeof(Material::PushBlock), &mat);
models.objects[models.objectIndex].draw(drawCmdBuffers[i]);
}
}
#endif
drawUI(drawCmdBuffers[i]); drawUI(drawCmdBuffers[i]);
vkCmdEndRenderPass(drawCmdBuffers[i]); vkCmdEndRenderPass(drawCmdBuffers[i]);
@ -1374,17 +1362,6 @@ public:
memcpy(uniformBuffers.params.mapped, &uboParams, sizeof(uboParams)); memcpy(uniformBuffers.params.mapped, &uboParams, sizeof(uboParams));
} }
void draw()
{
VulkanExampleBase::prepareFrame();
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
VulkanExampleBase::submitFrame();
}
void prepare() void prepare()
{ {
VulkanExampleBase::prepare(); VulkanExampleBase::prepare();
@ -1403,12 +1380,17 @@ public:
{ {
if (!prepared) if (!prepared)
return; return;
updateUniformBuffers();
draw(); draw();
} }
virtual void viewChanged() void draw()
{ {
updateUniformBuffers(); VulkanExampleBase::prepareFrame();
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
VulkanExampleBase::submitFrame();
} }
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay) virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)

419
examples/textoverlay/textoverlay.cpp
View file

@ -1,7 +1,10 @@
/* /*
* Vulkan Example - Text overlay rendering on-top of an existing scene using a separate render pass * Vulkan Example - Text overlay rendering on-top of an existing scene using a separate render pass
* *
* Copyright (C) 2016 by Sascha Willems - www.saschawillems.de * This sample renders a basic text overlay on top of a 3D scene that can be used e.g. for debug purposes
* For a more complete GUI sample see the ImGui sample
*
* Copyright (C) 2016-2023 by 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)
*/ */
@ -17,56 +20,51 @@
/* /*
Mostly self-contained text overlay class Mostly self-contained text overlay class
This class contains all Vulkan resources for drawing the text overlay
It can be plugged into an existing renderpass/command buffer
*/ */
class TextOverlay class TextOverlay
{ {
private: private:
vks::VulkanDevice *vulkanDevice; // Created by this class
// Font image
VkQueue queue;
VkFormat colorFormat;
VkFormat depthFormat;
uint32_t *frameBufferWidth;
uint32_t *frameBufferHeight;
float scale;
VkSampler sampler; VkSampler sampler;
VkImage image; VkImage image;
VkImageView view; VkImageView view;
VkDeviceMemory imageMemory;
// Character vertex buffer
VkBuffer buffer; VkBuffer buffer;
VkDeviceMemory memory; VkDeviceMemory memory;
VkDeviceMemory imageMemory;
VkDescriptorPool descriptorPool; VkDescriptorPool descriptorPool;
VkDescriptorSetLayout descriptorSetLayout; VkDescriptorSetLayout descriptorSetLayout;
VkDescriptorSet descriptorSet; VkDescriptorSet descriptorSet;
VkPipelineLayout pipelineLayout; VkPipelineLayout pipelineLayout;
VkPipelineCache pipelineCache; VkPipelineCache pipelineCache;
VkPipeline pipeline; VkPipeline pipeline;
// Passed from the sample
VkRenderPass renderPass; VkRenderPass renderPass;
VkCommandPool commandPool; VkQueue queue;
std::vector<VkFramebuffer*> frameBuffers; vks::VulkanDevice* vulkanDevice;
uint32_t* frameBufferWidth;
uint32_t* frameBufferHeight;
std::vector<VkPipelineShaderStageCreateInfo> shaderStages; std::vector<VkPipelineShaderStageCreateInfo> shaderStages;
float scale;
// Pointer to mapped vertex buffer // Pointer to mapped vertex buffer
glm::vec4 *mapped = nullptr; glm::vec4 *mapped = nullptr;
stb_fontchar stbFontData[STB_FONT_consolas_24_latin1_NUM_CHARS]; stb_fontchar stbFontData[STB_FONT_consolas_24_latin1_NUM_CHARS];
uint32_t numLetters;
public: public:
enum TextAlign { alignLeft, alignCenter, alignRight }; enum TextAlign { alignLeft, alignCenter, alignRight };
uint32_t numLetters;
bool visible = true; bool visible = true;
std::vector<VkCommandBuffer> cmdBuffers;
TextOverlay( TextOverlay(
vks::VulkanDevice *vulkanDevice, vks::VulkanDevice *vulkanDevice,
VkQueue queue, VkQueue queue,
std::vector<VkFramebuffer> &framebuffers, VkRenderPass renderPass,
VkFormat colorformat,
VkFormat depthformat,
uint32_t *framebufferwidth, uint32_t *framebufferwidth,
uint32_t *framebufferheight, uint32_t *framebufferheight,
float scale, float scale,
@ -74,24 +72,13 @@ public:
{ {
this->vulkanDevice = vulkanDevice; this->vulkanDevice = vulkanDevice;
this->queue = queue; this->queue = queue;
this->colorFormat = colorformat;
this->depthFormat = depthformat;
this->frameBuffers.resize(framebuffers.size());
for (uint32_t i = 0; i < framebuffers.size(); i++)
{
this->frameBuffers[i] = &framebuffers[i];
}
this->shaderStages = shaderstages; this->shaderStages = shaderstages;
this->frameBufferWidth = framebufferwidth; this->frameBufferWidth = framebufferwidth;
this->frameBufferHeight = framebufferheight; this->frameBufferHeight = framebufferheight;
this->scale = scale; this->scale = scale;
this->renderPass = renderPass;
cmdBuffers.resize(framebuffers.size());
prepareResources(); prepareResources();
prepareRenderPass();
preparePipeline(); preparePipeline();
} }
@ -109,8 +96,6 @@ public:
vkDestroyPipelineLayout(vulkanDevice->logicalDevice, pipelineLayout, nullptr); vkDestroyPipelineLayout(vulkanDevice->logicalDevice, pipelineLayout, nullptr);
vkDestroyPipelineCache(vulkanDevice->logicalDevice, pipelineCache, nullptr); vkDestroyPipelineCache(vulkanDevice->logicalDevice, pipelineCache, nullptr);
vkDestroyPipeline(vulkanDevice->logicalDevice, pipeline, nullptr); vkDestroyPipeline(vulkanDevice->logicalDevice, pipeline, nullptr);
vkDestroyRenderPass(vulkanDevice->logicalDevice, renderPass, nullptr);
vkDestroyCommandPool(vulkanDevice->logicalDevice, commandPool, nullptr);
} }
// Prepare all vulkan resources required to render the font // Prepare all vulkan resources required to render the font
@ -123,23 +108,6 @@ public:
static unsigned char font24pixels[fontHeight][fontWidth]; static unsigned char font24pixels[fontHeight][fontWidth];
stb_font_consolas_24_latin1(stbFontData, font24pixels, fontHeight); stb_font_consolas_24_latin1(stbFontData, font24pixels, fontHeight);
// Command buffer
// Pool
VkCommandPoolCreateInfo cmdPoolInfo = {};
cmdPoolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
cmdPoolInfo.queueFamilyIndex = vulkanDevice->queueFamilyIndices.graphics;
cmdPoolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
VK_CHECK_RESULT(vkCreateCommandPool(vulkanDevice->logicalDevice, &cmdPoolInfo, nullptr, &commandPool));
VkCommandBufferAllocateInfo cmdBufAllocateInfo =
vks::initializers::commandBufferAllocateInfo(
commandPool,
VK_COMMAND_BUFFER_LEVEL_PRIMARY,
(uint32_t)cmdBuffers.size());
VK_CHECK_RESULT(vkAllocateCommandBuffers(vulkanDevice->logicalDevice, &cmdBufAllocateInfo, cmdBuffers.data()));
// Vertex buffer // Vertex buffer
VkDeviceSize bufferSize = TEXTOVERLAY_MAX_CHAR_COUNT * sizeof(glm::vec4); VkDeviceSize bufferSize = TEXTOVERLAY_MAX_CHAR_COUNT * sizeof(glm::vec4);
@ -212,12 +180,7 @@ public:
// Copy to image // Copy to image
VkCommandBuffer copyCmd; VkCommandBuffer copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
cmdBufAllocateInfo.commandBufferCount = 1;
VK_CHECK_RESULT(vkAllocateCommandBuffers(vulkanDevice->logicalDevice, &cmdBufAllocateInfo, &copyCmd));
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
VK_CHECK_RESULT(vkBeginCommandBuffer(copyCmd, &cmdBufInfo));
// Prepare for transfer // Prepare for transfer
vks::tools::setImageLayout( vks::tools::setImageLayout(
@ -252,16 +215,8 @@ public:
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL); VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
VK_CHECK_RESULT(vkEndCommandBuffer(copyCmd)); vulkanDevice->flushCommandBuffer(copyCmd, queue);
VkSubmitInfo submitInfo = vks::initializers::submitInfo();
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &copyCmd;
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
VK_CHECK_RESULT(vkQueueWaitIdle(queue));
vkFreeCommandBuffers(vulkanDevice->logicalDevice, commandPool, 1, &copyCmd);
vkFreeMemory(vulkanDevice->logicalDevice, stagingBuffer.memory, nullptr); vkFreeMemory(vulkanDevice->logicalDevice, stagingBuffer.memory, nullptr);
vkDestroyBuffer(vulkanDevice->logicalDevice, stagingBuffer.buffer, nullptr); vkDestroyBuffer(vulkanDevice->logicalDevice, stagingBuffer.buffer, nullptr);
@ -304,48 +259,33 @@ public:
// Descriptor set layout // Descriptor set layout
std::array<VkDescriptorSetLayoutBinding, 1> setLayoutBindings; std::array<VkDescriptorSetLayoutBinding, 1> setLayoutBindings;
setLayoutBindings[0] = vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0); setLayoutBindings[0] = vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0);
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutInfo = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings.data(), static_cast<uint32_t>(setLayoutBindings.size()));
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutInfo =
vks::initializers::descriptorSetLayoutCreateInfo(
setLayoutBindings.data(),
static_cast<uint32_t>(setLayoutBindings.size()));
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(vulkanDevice->logicalDevice, &descriptorSetLayoutInfo, nullptr, &descriptorSetLayout)); VK_CHECK_RESULT(vkCreateDescriptorSetLayout(vulkanDevice->logicalDevice, &descriptorSetLayoutInfo, nullptr, &descriptorSetLayout));
// Pipeline layout
VkPipelineLayoutCreateInfo pipelineLayoutInfo =
vks::initializers::pipelineLayoutCreateInfo(
&descriptorSetLayout,
1);
VK_CHECK_RESULT(vkCreatePipelineLayout(vulkanDevice->logicalDevice, &pipelineLayoutInfo, nullptr, &pipelineLayout));
// Descriptor set // Descriptor set
VkDescriptorSetAllocateInfo descriptorSetAllocInfo = VkDescriptorSetAllocateInfo descriptorSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
vks::initializers::descriptorSetAllocateInfo(
descriptorPool,
&descriptorSetLayout,
1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(vulkanDevice->logicalDevice, &descriptorSetAllocInfo, &descriptorSet)); VK_CHECK_RESULT(vkAllocateDescriptorSets(vulkanDevice->logicalDevice, &descriptorSetAllocInfo, &descriptorSet));
VkDescriptorImageInfo texDescriptor = // Descriptor for the font image
vks::initializers::descriptorImageInfo( VkDescriptorImageInfo texDescriptor = vks::initializers::descriptorImageInfo(sampler, view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
sampler,
view,
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
std::array<VkWriteDescriptorSet, 1> writeDescriptorSets; std::array<VkWriteDescriptorSet, 1> writeDescriptorSets;
writeDescriptorSets[0] = vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &texDescriptor); writeDescriptorSets[0] = vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &texDescriptor);
vkUpdateDescriptorSets(vulkanDevice->logicalDevice, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL); vkUpdateDescriptorSets(vulkanDevice->logicalDevice, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL);
// Pipeline cache
VkPipelineCacheCreateInfo pipelineCacheCreateInfo = {};
pipelineCacheCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
VK_CHECK_RESULT(vkCreatePipelineCache(vulkanDevice->logicalDevice, &pipelineCacheCreateInfo, nullptr, &pipelineCache));
} }
// Prepare a separate pipeline for the font rendering decoupled from the main application // Prepare a separate pipeline for the font rendering decoupled from the main application
void preparePipeline() void preparePipeline()
{ {
// Pipeline cache
VkPipelineCacheCreateInfo pipelineCacheCreateInfo = {};
pipelineCacheCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
VK_CHECK_RESULT(vkCreatePipelineCache(vulkanDevice->logicalDevice, &pipelineCacheCreateInfo, nullptr, &pipelineCache));
// Layout
VkPipelineLayoutCreateInfo pipelineLayoutInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(vulkanDevice->logicalDevice, &pipelineLayoutInfo, nullptr, &pipelineLayout));
// Enable blending, using alpha from red channel of the font texture (see text.frag) // Enable blending, using alpha from red channel of the font texture (see text.frag)
VkPipelineColorBlendAttachmentState blendAttachmentState{}; VkPipelineColorBlendAttachmentState blendAttachmentState{};
blendAttachmentState.blendEnable = VK_TRUE; blendAttachmentState.blendEnable = VK_TRUE;
@ -360,7 +300,7 @@ public:
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP, 0, VK_FALSE); VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP, 0, VK_FALSE);
VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_CLOCKWISE, 0); VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_CLOCKWISE, 0);
VkPipelineColorBlendStateCreateInfo colorBlendState = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState); VkPipelineColorBlendStateCreateInfo colorBlendState = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
VkPipelineDepthStencilStateCreateInfo depthStencilState = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL); VkPipelineDepthStencilStateCreateInfo depthStencilState = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_FALSE, VK_FALSE, VK_COMPARE_OP_LESS_OR_EQUAL);
VkPipelineViewportStateCreateInfo viewportState = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0); VkPipelineViewportStateCreateInfo viewportState = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
VkPipelineMultisampleStateCreateInfo multisampleState = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0); VkPipelineMultisampleStateCreateInfo multisampleState = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0);
std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR }; std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
@ -396,86 +336,6 @@ public:
VK_CHECK_RESULT(vkCreateGraphicsPipelines(vulkanDevice->logicalDevice, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipeline)); VK_CHECK_RESULT(vkCreateGraphicsPipelines(vulkanDevice->logicalDevice, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipeline));
} }
// Prepare a separate render pass for rendering the text as an overlay
void prepareRenderPass()
{
VkAttachmentDescription attachments[2] = {};
// Color attachment
attachments[0].format = colorFormat;
attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
// Don't clear the framebuffer (like the renderpass from the example does)
attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachments[0].initialLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
attachments[0].finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
// Depth attachment
attachments[1].format = depthFormat;
attachments[1].samples = VK_SAMPLE_COUNT_1_BIT;
attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachments[1].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
VkAttachmentReference colorReference = {};
colorReference.attachment = 0;
colorReference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentReference depthReference = {};
depthReference.attachment = 1;
depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
// Use subpass dependencies for image layout transitions
VkSubpassDependency subpassDependencies[2] = {};
// Transition from final to initial (VK_SUBPASS_EXTERNAL refers to all commands executed outside of the actual renderpass)
subpassDependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
subpassDependencies[0].dstSubpass = 0;
subpassDependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
subpassDependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
subpassDependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT;
subpassDependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
subpassDependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
// Transition from initial to final
subpassDependencies[1].srcSubpass = 0;
subpassDependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
subpassDependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
subpassDependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
subpassDependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
subpassDependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
subpassDependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
VkSubpassDescription subpassDescription = {};
subpassDescription.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpassDescription.flags = 0;
subpassDescription.inputAttachmentCount = 0;
subpassDescription.pInputAttachments = NULL;
subpassDescription.colorAttachmentCount = 1;
subpassDescription.pColorAttachments = &colorReference;
subpassDescription.pResolveAttachments = NULL;
subpassDescription.pDepthStencilAttachment = &depthReference;
subpassDescription.preserveAttachmentCount = 0;
subpassDescription.pPreserveAttachments = NULL;
VkRenderPassCreateInfo renderPassInfo = {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
renderPassInfo.pNext = NULL;
renderPassInfo.attachmentCount = 2;
renderPassInfo.pAttachments = attachments;
renderPassInfo.subpassCount = 1;
renderPassInfo.pSubpasses = &subpassDescription;
renderPassInfo.dependencyCount = 2;
renderPassInfo.pDependencies = subpassDependencies;
VK_CHECK_RESULT(vkCreateRenderPass(vulkanDevice->logicalDevice, &renderPassInfo, nullptr, &renderPass));
}
// Map buffer // Map buffer
void beginTextUpdate() void beginTextUpdate()
{ {
@ -484,7 +344,6 @@ public:
} }
// Add text to the current buffer // Add text to the current buffer
// todo : drop shadow? color attribute?
void addText(std::string text, float x, float y, TextAlign align) void addText(std::string text, float x, float y, TextAlign align)
{ {
const uint32_t firstChar = STB_FONT_consolas_24_latin1_FIRST_CHAR; const uint32_t firstChar = STB_FONT_consolas_24_latin1_FIRST_CHAR;
@ -559,53 +418,22 @@ public:
{ {
vkUnmapMemory(vulkanDevice->logicalDevice, memory); vkUnmapMemory(vulkanDevice->logicalDevice, memory);
mapped = nullptr; mapped = nullptr;
updateCommandBuffers(); //updateCommandBuffers();
} }
// Needs to be called by the application // Issue the draw commands for the characters of the overlay
void updateCommandBuffers() void draw(VkCommandBuffer cmdBuffer)
{ {
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo(); vkCmdBindPipeline(cmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
vkCmdBindDescriptorSets(cmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
VkClearValue clearValues[2];
clearValues[1].color = { { 0.0f, 0.0f, 0.0f, 0.0f } };
VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
renderPassBeginInfo.renderPass = renderPass;
renderPassBeginInfo.renderArea.extent.width = *frameBufferWidth;
renderPassBeginInfo.renderArea.extent.height = *frameBufferHeight;
renderPassBeginInfo.clearValueCount = 2;
renderPassBeginInfo.pClearValues = clearValues;
for (int32_t i = 0; i < cmdBuffers.size(); ++i)
{
renderPassBeginInfo.framebuffer = *frameBuffers[i];
VK_CHECK_RESULT(vkBeginCommandBuffer(cmdBuffers[i], &cmdBufInfo));
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; VkDeviceSize offsets = 0;
vkCmdBindVertexBuffers(cmdBuffers[i], 0, 1, &buffer, &offsets); vkCmdBindVertexBuffers(cmdBuffer, 0, 1, &buffer, &offsets);
vkCmdBindVertexBuffers(cmdBuffers[i], 1, 1, &buffer, &offsets); vkCmdBindVertexBuffers(cmdBuffer, 1, 1, &buffer, &offsets);
for (uint32_t j = 0; j < numLetters; j++) // One draw command for every character. This is okay for a debug overlay, but not optimal
{ // In a real-world application one would try to batch draw commands
vkCmdDraw(cmdBuffers[i], 4, 1, j * 4, 0); for (uint32_t j = 0; j < numLetters; j++) {
} vkCmdDraw(cmdBuffer, 4, 1, j * 4, 0);
vkCmdEndRenderPass(cmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(cmdBuffers[i]));
} }
} }
}; };
@ -616,23 +444,21 @@ public:
class VulkanExample : public VulkanExampleBase class VulkanExample : public VulkanExampleBase
{ {
public: public:
TextOverlay *textOverlay = nullptr; TextOverlay* textOverlay{ nullptr };
vkglTF::Model model; vkglTF::Model model;
vks::Buffer uniformBuffer; struct UniformData {
struct UBOVS {
glm::mat4 projection; glm::mat4 projection;
glm::mat4 modelView; glm::mat4 modelView;
glm::vec4 lightPos = glm::vec4(0.0f, 0.0f, 0.0f, 1.0f); glm::vec4 lightPos = glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
} uboVS; } uniformData;
vks::Buffer uniformBuffer;
VkPipelineLayout pipelineLayout; VkPipelineLayout pipelineLayout{ VK_NULL_HANDLE };
VkPipeline pipeline; VkPipeline pipeline{ VK_NULL_HANDLE };
VkDescriptorSetLayout descriptorSetLayout{ VK_NULL_HANDLE };
VkDescriptorSetLayout descriptorSetLayout; VkDescriptorSet descriptorSet{ VK_NULL_HANDLE };
VkDescriptorSet descriptorSet;
VulkanExample() : VulkanExampleBase() VulkanExample() : VulkanExampleBase()
{ {
@ -646,12 +472,14 @@ public:
~VulkanExample() ~VulkanExample()
{ {
if (device) {
vkDestroyPipeline(device, pipeline, nullptr); vkDestroyPipeline(device, pipeline, nullptr);
vkDestroyPipelineLayout(device, pipelineLayout, nullptr); vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr); vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
uniformBuffer.destroy(); uniformBuffer.destroy();
delete(textOverlay); delete(textOverlay);
} }
}
void buildCommandBuffers() void buildCommandBuffers()
{ {
@ -688,6 +516,8 @@ public:
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr); vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
model.draw(drawCmdBuffers[i]); model.draw(drawCmdBuffers[i]);
textOverlay->draw(drawCmdBuffers[i]);
vkCmdEndRenderPass(drawCmdBuffers[i]); vkCmdEndRenderPass(drawCmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i])); VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
@ -699,6 +529,8 @@ public:
// Update the text buffer displayed by the text overlay // Update the text buffer displayed by the text overlay
void updateTextOverlay(void) void updateTextOverlay(void)
{ {
uint32_t lastNumLetters = textOverlay->numLetters;
textOverlay->beginTextUpdate(); textOverlay->beginTextUpdate();
textOverlay->addText(title, 5.0f * UIOverlay.scale, 5.0f * UIOverlay.scale, TextOverlay::alignLeft); textOverlay->addText(title, 5.0f * UIOverlay.scale, 5.0f * UIOverlay.scale, TextOverlay::alignLeft);
@ -716,12 +548,12 @@ public:
{ {
ss.str(""); ss.str("");
ss << std::fixed << std::setprecision(2) << std::showpos; ss << std::fixed << std::setprecision(2) << std::showpos;
ss << uboVS.modelView[0][i] << " " << uboVS.modelView[1][i] << " " << uboVS.modelView[2][i] << " " << uboVS.modelView[3][i]; ss << uniformData.modelView[0][i] << " " << uniformData.modelView[1][i] << " " << uniformData.modelView[2][i] << " " << uniformData.modelView[3][i];
textOverlay->addText(ss.str(), (float)width - 5.0f * UIOverlay.scale, (25.0f + (float)i * 20.0f) * UIOverlay.scale, TextOverlay::alignRight); textOverlay->addText(ss.str(), (float)width - 5.0f * UIOverlay.scale, (25.0f + (float)i * 20.0f) * UIOverlay.scale, TextOverlay::alignRight);
} }
glm::vec3 projected = glm::project(glm::vec3(0.0f), uboVS.modelView, uboVS.projection, glm::vec4(0, 0, (float)width, (float)height)); glm::vec3 projected = glm::project(glm::vec3(0.0f), uniformData.modelView, uniformData.projection, glm::vec4(0, 0, (float)width, (float)height));
textOverlay->addText("A cube", projected.x, projected.y, TextOverlay::alignCenter); textOverlay->addText("A torus knot", projected.x, projected.y, TextOverlay::alignCenter);
#if defined(__ANDROID__) #if defined(__ANDROID__)
#else #else
@ -729,54 +561,54 @@ public:
textOverlay->addText("Hold middle mouse button and drag to move", 5.0f * UIOverlay.scale, 85.0f * UIOverlay.scale, TextOverlay::alignLeft); textOverlay->addText("Hold middle mouse button and drag to move", 5.0f * UIOverlay.scale, 85.0f * UIOverlay.scale, TextOverlay::alignLeft);
#endif #endif
textOverlay->endTextUpdate(); textOverlay->endTextUpdate();
// If the no. of letters changed, the no. of draw commands also changes which requires a rebuild of the command buffers
if (lastNumLetters != textOverlay->numLetters) {
std::cout << "rebuild cb\n";
buildCommandBuffers();
}
} }
void loadAssets() void loadAssets()
{ {
const uint32_t glTFLoadingFlags = vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::PreMultiplyVertexColors | vkglTF::FileLoadingFlags::FlipY; const uint32_t glTFLoadingFlags = vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::PreMultiplyVertexColors | vkglTF::FileLoadingFlags::FlipY;
model.loadFromFile(getAssetPath() + "models/cube.gltf", vulkanDevice, queue, glTFLoadingFlags); model.loadFromFile(getAssetPath() + "models/torusknot.gltf", vulkanDevice, queue, glTFLoadingFlags);
} }
void setupDescriptorPool() void setupDescriptors()
{ {
// Pool
std::vector<VkDescriptorPoolSize> poolSizes = { std::vector<VkDescriptorPoolSize> poolSizes = {
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2), vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2),
}; };
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
VkDescriptorPoolCreateInfo descriptorPoolInfo =
vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool)); VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
}
void setupDescriptorSetLayout() // Layout
{
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = { std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
// Binding 0: Vertex shader uniform buffer // Binding 0: Vertex shader uniform buffer
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0), vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
}; };
VkDescriptorSetLayoutCreateInfo descriptorLayout = VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout)); VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo = // Set
vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1); VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
}
void setupDescriptorSet()
{
VkDescriptorSetAllocateInfo allocInfo =
vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet)); VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
std::vector<VkWriteDescriptorSet> writeDescriptorSets = { std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
// Binding 0: Vertex shader uniform buffer // Binding 0: Vertex shader uniform buffer
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffer.descriptor), vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffer.descriptor),
}; };
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, NULL); vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
} }
void preparePipelines() void preparePipelines()
{ {
// Layout
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
// Pipeline
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE); VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0); VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE); VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
@ -808,24 +640,15 @@ public:
// Prepare and initialize uniform buffer containing shader uniforms // Prepare and initialize uniform buffer containing shader uniforms
void prepareUniformBuffers() void prepareUniformBuffers()
{ {
// 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(UniformData)));
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()); VK_CHECK_RESULT(uniformBuffer.map());
updateUniformBuffers();
} }
void updateUniformBuffers() void updateUniformBuffers()
{ {
uboVS.projection = camera.matrices.perspective; uniformData.projection = camera.matrices.perspective;
uboVS.modelView = camera.matrices.view * glm::scale(glm::mat4(1.0f), glm::vec3(0.1f)); uniformData.modelView = camera.matrices.view;
memcpy(uniformBuffer.mapped, &uboVS, sizeof(uboVS)); memcpy(uniformBuffer.mapped, &uniformData, sizeof(UniformData));
} }
void prepareTextOverlay() void prepareTextOverlay()
@ -838,9 +661,7 @@ public:
textOverlay = new TextOverlay( textOverlay = new TextOverlay(
vulkanDevice, vulkanDevice,
queue, queue,
frameBuffers, renderPass,
swapChain.colorFormat,
depthFormat,
&width, &width,
&height, &height,
UIOverlay.scale, UIOverlay.scale,
@ -849,68 +670,36 @@ public:
updateTextOverlay(); updateTextOverlay();
} }
void draw()
{
VulkanExampleBase::prepareFrame();
std::vector<VkCommandBuffer> commandBuffers = {
drawCmdBuffers[currentBuffer]
};
if (textOverlay->visible) {
commandBuffers.push_back(textOverlay->cmdBuffers[currentBuffer]);
}
// Command buffer to be submitted to the queue
submitInfo.commandBufferCount = static_cast<uint32_t>(commandBuffers.size());
submitInfo.pCommandBuffers = commandBuffers.data();
// Submit to queue
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
VulkanExampleBase::submitFrame();
}
void prepare() void prepare()
{ {
VulkanExampleBase::prepare(); VulkanExampleBase::prepare();
loadAssets(); loadAssets();
prepareUniformBuffers(); prepareUniformBuffers();
setupDescriptorSetLayout(); setupDescriptors();
preparePipelines(); preparePipelines();
setupDescriptorPool();
setupDescriptorSet();
buildCommandBuffers();
prepareTextOverlay(); prepareTextOverlay();
buildCommandBuffers();
prepared = true; prepared = true;
} }
void draw()
{
VulkanExampleBase::prepareFrame();
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
VulkanExampleBase::submitFrame();
}
virtual void render() virtual void render()
{ {
if (!prepared) if (!prepared)
return; return;
updateUniformBuffers();
if (camera.updated) {
updateTextOverlay();
}
draw(); draw();
if (camera.updated)
{
updateUniformBuffers();
}
if (frameCounter == 0)
{
vkDeviceWaitIdle(device);
updateTextOverlay();
}
}
virtual void windowResized()
{
// SRS - Recreate text overlay resources in case number of swapchain images has changed on resize
delete textOverlay;
prepareTextOverlay();
}
virtual void viewChanged()
{
updateUniformBuffers();
updateTextOverlay();
} }
virtual void keyPressed(uint32_t keyCode) virtual void keyPressed(uint32_t keyCode)