291 lines
No EOL
10 KiB
C++
291 lines
No EOL
10 KiB
C++
/*
|
|
* Vulkan Example - Spherical Environment Mapping, using different mat caps
|
|
*
|
|
* Use +/-/space toggle through different material captures
|
|
*
|
|
* Based on https://www.clicktorelease.com/blog/creating-spherical-environment-mapping-shader
|
|
*
|
|
* Copyright (C) 2016 by Sascha Willems - www.saschawillems.de
|
|
*
|
|
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
|
|
*/
|
|
|
|
#include "vulkanexamplebase.h"
|
|
#include "VulkanglTFModel.h"
|
|
|
|
#define VERTEX_BUFFER_BIND_ID 0
|
|
#define ENABLE_VALIDATION false
|
|
|
|
class VulkanExample : public VulkanExampleBase
|
|
{
|
|
public:
|
|
vkglTF::Model model;
|
|
vks::Texture2DArray matCapTextureArray;
|
|
|
|
struct UBOVS {
|
|
glm::mat4 projection;
|
|
glm::mat4 model;
|
|
glm::mat4 normal;
|
|
glm::mat4 view;
|
|
int32_t texIndex = 0;
|
|
} uboVS;
|
|
vks::Buffer uniformBuffer;
|
|
|
|
VkPipeline pipeline;
|
|
VkPipelineLayout pipelineLayout;
|
|
VkDescriptorSet descriptorSet;
|
|
VkDescriptorSetLayout descriptorSetLayout;
|
|
|
|
VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
|
|
{
|
|
title = "Spherical Environment Mapping";
|
|
camera.type = Camera::CameraType::lookat;
|
|
camera.setPosition(glm::vec3(0.0f, 0.0f, -3.5f));
|
|
camera.setRotation(glm::vec3(-25.0f, 23.75f, 0.0f));
|
|
camera.setRotationSpeed(0.75f);
|
|
camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
|
|
}
|
|
|
|
~VulkanExample()
|
|
{
|
|
// Clean up used Vulkan resources
|
|
// Note : Inherited destructor cleans up resources stored in base class
|
|
vkDestroyPipeline(device, pipeline, nullptr);
|
|
|
|
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
|
|
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
|
|
|
|
uniformBuffer.destroy();
|
|
matCapTextureArray.destroy();
|
|
}
|
|
|
|
void loadAssets()
|
|
{
|
|
model.loadFromFile(getAssetPath() + "models/chinesedragon.gltf", vulkanDevice, queue, vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::PreMultiplyVertexColors | vkglTF::FileLoadingFlags::FlipY);
|
|
// Multiple mat caps are stored in a single texture array so they can easily be switched inside the shader just by updating the index in a uniform buffer
|
|
matCapTextureArray.loadFromFile(getAssetPath() + "textures/matcap_array_rgba.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
|
|
}
|
|
|
|
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);
|
|
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
|
|
|
|
model.draw(drawCmdBuffers[i]);
|
|
|
|
drawUI(drawCmdBuffers[i]);
|
|
|
|
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
|
|
|
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
|
}
|
|
}
|
|
|
|
void setupDescriptorPool()
|
|
{
|
|
// Example uses one ubo and one image sampler
|
|
std::vector<VkDescriptorPoolSize> poolSizes =
|
|
{
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1)
|
|
};
|
|
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo =
|
|
vks::initializers::descriptorPoolCreateInfo(
|
|
poolSizes.size(),
|
|
poolSizes.data(),
|
|
2);
|
|
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
}
|
|
|
|
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 color map 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 setupDescriptorSet()
|
|
{
|
|
VkDescriptorSetAllocateInfo allocInfo =
|
|
vks::initializers::descriptorSetAllocateInfo(
|
|
descriptorPool,
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
|
|
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformBuffer.descriptor),
|
|
// Binding 1 : Fragment shader image sampler
|
|
vks::initializers::writeDescriptorSet(
|
|
descriptorSet,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&matCapTextureArray.descriptor)
|
|
};
|
|
|
|
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
|
|
}
|
|
|
|
void preparePipelines()
|
|
{
|
|
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);
|
|
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;
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass, 0);
|
|
pipelineCI.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCI.pRasterizationState = &rasterizationState;
|
|
pipelineCI.pColorBlendState = &colorBlendState;
|
|
pipelineCI.pMultisampleState = &multisampleState;
|
|
pipelineCI.pViewportState = &viewportState;
|
|
pipelineCI.pDepthStencilState = &depthStencilState;
|
|
pipelineCI.pDynamicState = &dynamicState;
|
|
pipelineCI.stageCount = shaderStages.size();
|
|
pipelineCI.pStages = shaderStages.data();
|
|
pipelineCI.pVertexInputState = vkglTF::Vertex::getPipelineVertexInputState({vkglTF::VertexComponent::Position, vkglTF::VertexComponent::Normal, vkglTF::VertexComponent::Color});
|
|
|
|
// Spherical environment rendering pipeline
|
|
shaderStages[0] = loadShader(getShadersPath() + "sphericalenvmapping/sem.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "sphericalenvmapping/sem.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipeline));
|
|
}
|
|
|
|
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(uboVS)));
|
|
|
|
// Map persistent
|
|
VK_CHECK_RESULT(uniformBuffer.map());
|
|
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void updateUniformBuffers()
|
|
{
|
|
uboVS.projection = camera.matrices.perspective;
|
|
uboVS.view = camera.matrices.view;
|
|
uboVS.model = glm::mat4(1.0f);
|
|
uboVS.normal = glm::inverseTranspose(uboVS.view * uboVS.model);
|
|
memcpy(uniformBuffer.mapped, &uboVS, sizeof(uboVS));
|
|
}
|
|
|
|
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()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadAssets();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
draw();
|
|
if (camera.updated) {
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
|
|
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
|
{
|
|
if (overlay->header("Settings")) {
|
|
if (overlay->sliderInt("Material cap", &uboVS.texIndex, 0, matCapTextureArray.layerCount)) {
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN() |