552 lines
No EOL
16 KiB
C++
552 lines
No EOL
16 KiB
C++
/*
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* Vulkan Example - Spherical Environment Mapping, using different mat caps
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*
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* Use +/-/space toggle through different material captures
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*
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* Based on https://www.clicktorelease.com/blog/creating-spherical-environment-mapping-shader
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*
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* Copyright (C) 2016 by Sascha Willems - www.saschawillems.de
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*
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* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <vector>
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#define GLM_FORCE_RADIANS
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#define GLM_FORCE_DEPTH_ZERO_TO_ONE
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#include <glm/glm.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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#include <glm/gtc/matrix_inverse.hpp>
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#include <vulkan/vulkan.h>
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#include "vulkanexamplebase.h"
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#define VERTEX_BUFFER_BIND_ID 0
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#define ENABLE_VALIDATION false
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// Vertex layout for this example
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std::vector<vkMeshLoader::VertexLayout> vertexLayout =
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{
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vkMeshLoader::VERTEX_LAYOUT_POSITION,
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vkMeshLoader::VERTEX_LAYOUT_NORMAL,
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vkMeshLoader::VERTEX_LAYOUT_UV,
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vkMeshLoader::VERTEX_LAYOUT_COLOR
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};
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class VulkanExample : public VulkanExampleBase
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{
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public:
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struct {
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VkPipelineVertexInputStateCreateInfo inputState;
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std::vector<VkVertexInputBindingDescription> bindingDescriptions;
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std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
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} vertices;
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struct {
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vkMeshLoader::MeshBuffer object;
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} meshes;
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struct {
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vkTools::VulkanTexture matCapArray;
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} textures;
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struct {
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vkTools::UniformData vertexShader;
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} uniformData;
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struct {
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glm::mat4 projection;
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glm::mat4 model;
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glm::mat4 normal;
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glm::mat4 view;
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int32_t texIndex = 0;
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} uboVS;
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struct {
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VkPipeline sem;
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} pipelines;
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VkPipelineLayout pipelineLayout;
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VkDescriptorSet descriptorSet;
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VkDescriptorSetLayout descriptorSetLayout;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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zoom = -0.9f;
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rotationSpeed = 0.75f;
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zoomSpeed = 0.25f;
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rotation = glm::vec3(-25.0f, 23.75f, 0.0f);
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title = "Vulkan Example - Spherical Environment Mapping";
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}
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~VulkanExample()
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{
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// Clean up used Vulkan resources
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// Note : Inherited destructor cleans up resources stored in base class
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vkDestroyPipeline(device, pipelines.sem, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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vkMeshLoader::freeMeshBufferResources(device, &meshes.object);
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vkTools::destroyUniformData(device, &uniformData.vertexShader);
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textureLoader->destroyTexture(textures.matCapArray);
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}
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void loadTextures()
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{
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// Several mat caps are stored in a single texture array
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// so they can easily be switched inside the shader
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// just by updating the index in a uniform buffer
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textureLoader->loadTextureArray(
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getAssetPath() + "textures/matcap_array_rgba.ktx",
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VK_FORMAT_R8G8B8A8_UNORM,
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&textures.matCapArray);
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}
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void buildCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[2];
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clearValues[0].color = defaultClearColor;
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vkTools::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.renderArea.offset.x = 0;
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renderPassBeginInfo.renderArea.offset.y = 0;
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renderPassBeginInfo.renderArea.extent.width = width;
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renderPassBeginInfo.renderArea.extent.height = height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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// Set target frame buffer
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport = vkTools::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vkTools::initializers::rect2D(width, height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.sem);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.object.vertices.buf, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.object.indices.buf, 0, VK_INDEX_TYPE_UINT32);
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vkCmdDrawIndexed(drawCmdBuffers[i], meshes.object.indexCount, 1, 0, 0, 0);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
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}
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}
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void draw()
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{
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// Get next image in the swap chain (back/front buffer)
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VK_CHECK_RESULT(swapChain.acquireNextImage(semaphores.presentComplete, ¤tBuffer));
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submitPostPresentBarrier(swapChain.buffers[currentBuffer].image);
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// Command buffer to be sumitted to the queue
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submitInfo.commandBufferCount = 1;
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submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
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// Submit to queue
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VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
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submitPrePresentBarrier(swapChain.buffers[currentBuffer].image);
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VK_CHECK_RESULT(swapChain.queuePresent(queue, currentBuffer, semaphores.renderComplete));
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VK_CHECK_RESULT(vkQueueWaitIdle(queue));
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}
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void loadMeshes()
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{
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loadMesh(getAssetPath() + "models/chinesedragon.dae", &meshes.object, vertexLayout, 0.05f);
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}
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void prepareVertices()
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{
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// Binding description
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vertices.bindingDescriptions.resize(1);
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vertices.bindingDescriptions[0] =
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vkTools::initializers::vertexInputBindingDescription(
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VERTEX_BUFFER_BIND_ID,
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vkMeshLoader::vertexSize(vertexLayout),
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VK_VERTEX_INPUT_RATE_VERTEX);
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// Attribute descriptions
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// Describes memory layout and shader positions
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vertices.attributeDescriptions.resize(4);
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// Location 0 : Position
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vertices.attributeDescriptions[0] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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0,
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VK_FORMAT_R32G32B32_SFLOAT,
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0);
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// Location 1 : Normal
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vertices.attributeDescriptions[1] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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1,
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VK_FORMAT_R32G32B32_SFLOAT,
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sizeof(float) * 3);
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// Location 2 : Texture coordinates
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vertices.attributeDescriptions[2] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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2,
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VK_FORMAT_R32G32_SFLOAT,
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sizeof(float) * 6);
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// Location 3 : Color
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vertices.attributeDescriptions[3] =
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vkTools::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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3,
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VK_FORMAT_R32G32B32_SFLOAT,
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sizeof(float) * 8);
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vertices.inputState = vkTools::initializers::pipelineVertexInputStateCreateInfo();
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vertices.inputState.vertexBindingDescriptionCount = vertices.bindingDescriptions.size();
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vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
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vertices.inputState.vertexAttributeDescriptionCount = vertices.attributeDescriptions.size();
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vertices.inputState.pVertexAttributeDescriptions = vertices.attributeDescriptions.data();
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}
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void setupDescriptorPool()
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{
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// Example uses one ubo and one image sampler
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std::vector<VkDescriptorPoolSize> poolSizes =
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{
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vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
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vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1)
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};
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VkDescriptorPoolCreateInfo descriptorPoolInfo =
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vkTools::initializers::descriptorPoolCreateInfo(
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poolSizes.size(),
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poolSizes.data(),
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2);
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VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
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}
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void setupDescriptorSetLayout()
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{
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std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
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{
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// Binding 0 : Vertex shader uniform buffer
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vkTools::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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VK_SHADER_STAGE_VERTEX_BIT,
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0),
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// Binding 1 : Fragment shader color map image sampler
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vkTools::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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1)
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};
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VkDescriptorSetLayoutCreateInfo descriptorLayout =
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vkTools::initializers::descriptorSetLayoutCreateInfo(
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setLayoutBindings.data(),
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setLayoutBindings.size());
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VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
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VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
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vkTools::initializers::pipelineLayoutCreateInfo(
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&descriptorSetLayout,
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1);
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VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
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}
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void setupDescriptorSet()
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{
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VkDescriptorSetAllocateInfo allocInfo =
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vkTools::initializers::descriptorSetAllocateInfo(
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descriptorPool,
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&descriptorSetLayout,
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1);
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
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// Color map image descriptor
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VkDescriptorImageInfo texDescriptorColorMap =
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vkTools::initializers::descriptorImageInfo(
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textures.matCapArray.sampler,
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textures.matCapArray.view,
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VK_IMAGE_LAYOUT_GENERAL);
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std::vector<VkWriteDescriptorSet> writeDescriptorSets =
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{
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// Binding 0 : Vertex shader uniform buffer
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vkTools::initializers::writeDescriptorSet(
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descriptorSet,
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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0,
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&uniformData.vertexShader.descriptor),
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// Binding 1 : Fragment shader image sampler
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vkTools::initializers::writeDescriptorSet(
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descriptorSet,
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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1,
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&texDescriptorColorMap)
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};
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vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
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}
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void preparePipelines()
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{
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VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
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vkTools::initializers::pipelineInputAssemblyStateCreateInfo(
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VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
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0,
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VK_FALSE);
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VkPipelineRasterizationStateCreateInfo rasterizationState =
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vkTools::initializers::pipelineRasterizationStateCreateInfo(
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VK_POLYGON_MODE_FILL,
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VK_CULL_MODE_BACK_BIT,
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VK_FRONT_FACE_CLOCKWISE,
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0);
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VkPipelineColorBlendAttachmentState blendAttachmentState =
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vkTools::initializers::pipelineColorBlendAttachmentState(
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0xf,
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VK_FALSE);
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VkPipelineColorBlendStateCreateInfo colorBlendState =
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vkTools::initializers::pipelineColorBlendStateCreateInfo(
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1,
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&blendAttachmentState);
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VkPipelineDepthStencilStateCreateInfo depthStencilState =
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vkTools::initializers::pipelineDepthStencilStateCreateInfo(
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VK_TRUE,
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VK_TRUE,
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VK_COMPARE_OP_LESS_OR_EQUAL);
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VkPipelineViewportStateCreateInfo viewportState =
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vkTools::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
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VkPipelineMultisampleStateCreateInfo multisampleState =
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vkTools::initializers::pipelineMultisampleStateCreateInfo(
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VK_SAMPLE_COUNT_1_BIT,
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0);
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std::vector<VkDynamicState> dynamicStateEnables = {
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VK_DYNAMIC_STATE_VIEWPORT,
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VK_DYNAMIC_STATE_SCISSOR
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};
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VkPipelineDynamicStateCreateInfo dynamicState =
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vkTools::initializers::pipelineDynamicStateCreateInfo(
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dynamicStateEnables.data(),
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dynamicStateEnables.size(),
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0);
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// Spherical environment rendering pipeline
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// Load shaders
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std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
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shaderStages[0] = loadShader(getAssetPath() + "shaders/sphericalenvmapping/sem.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
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shaderStages[1] = loadShader(getAssetPath() + "shaders/sphericalenvmapping/sem.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
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VkGraphicsPipelineCreateInfo pipelineCreateInfo =
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vkTools::initializers::pipelineCreateInfo(
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pipelineLayout,
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renderPass,
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0);
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pipelineCreateInfo.pVertexInputState = &vertices.inputState;
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pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
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pipelineCreateInfo.pRasterizationState = &rasterizationState;
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pipelineCreateInfo.pColorBlendState = &colorBlendState;
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pipelineCreateInfo.pMultisampleState = &multisampleState;
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pipelineCreateInfo.pViewportState = &viewportState;
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pipelineCreateInfo.pDepthStencilState = &depthStencilState;
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pipelineCreateInfo.pDynamicState = &dynamicState;
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pipelineCreateInfo.stageCount = shaderStages.size();
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pipelineCreateInfo.pStages = shaderStages.data();
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VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.sem));
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}
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void prepareUniformBuffers()
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{
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// Vertex shader uniform buffer block
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createBuffer(
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VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
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sizeof(uboVS),
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&uboVS,
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&uniformData.vertexShader.buffer,
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&uniformData.vertexShader.memory,
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&uniformData.vertexShader.descriptor);
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updateUniformBuffers();
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}
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void updateUniformBuffers()
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{
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uboVS.projection = glm::perspective(glm::radians(45.0f), (float)width / (float)height, 0.1f, 256.0f);
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uboVS.view = glm::lookAt(
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glm::vec3(0, 0, -zoom),
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glm::vec3(0, 0, 0),
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glm::vec3(0, 1, 0)
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);
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uboVS.model = glm::mat4();
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uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
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uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
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uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
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uboVS.normal = glm::inverseTranspose(uboVS.view * uboVS.model);
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uint8_t *pData;
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VK_CHECK_RESULT(vkMapMemory(device, uniformData.vertexShader.memory, 0, sizeof(uboVS), 0, (void **)&pData));
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memcpy(pData, &uboVS, sizeof(uboVS));
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vkUnmapMemory(device, uniformData.vertexShader.memory);
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}
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void prepare()
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{
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VulkanExampleBase::prepare();
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loadTextures();
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loadMeshes();
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prepareVertices();
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prepareUniformBuffers();
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setupDescriptorSetLayout();
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preparePipelines();
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setupDescriptorPool();
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setupDescriptorSet();
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buildCommandBuffers();
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prepared = true;
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}
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virtual void render()
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{
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if (!prepared)
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return;
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vkDeviceWaitIdle(device);
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draw();
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vkDeviceWaitIdle(device);
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}
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virtual void viewChanged()
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{
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updateUniformBuffers();
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}
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virtual void keyPressed(uint32_t keyCode)
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{
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switch (keyCode)
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{
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case 0x6B:
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case 0x20:
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case GAMEPAD_BUTTON_A:
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changeMatCapIndex(1);
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break;
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case 0x6D:
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case GAMEPAD_BUTTON_X:
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changeMatCapIndex(-1);
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break;
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}
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}
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void changeMatCapIndex(uint32_t delta)
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{
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uboVS.texIndex += delta;
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if (uboVS.texIndex < 0)
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{
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uboVS.texIndex = textures.matCapArray.layerCount-1;
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}
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if (uboVS.texIndex >= textures.matCapArray.layerCount)
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{
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uboVS.texIndex = 0;
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}
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updateUniformBuffers();
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}
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};
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VulkanExample *vulkanExample;
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#if defined(_WIN32)
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LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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if (vulkanExample != NULL)
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{
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vulkanExample->handleMessages(hWnd, uMsg, wParam, lParam);
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}
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return (DefWindowProc(hWnd, uMsg, wParam, lParam));
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}
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#elif defined(__linux__) && !defined(__ANDROID__)
|
|
static void handleEvent(const xcb_generic_event_t *event)
|
|
{
|
|
if (vulkanExample != NULL)
|
|
{
|
|
vulkanExample->handleEvent(event);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Main entry point
|
|
#if defined(_WIN32)
|
|
// Windows entry point
|
|
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine, int nCmdShow)
|
|
#elif defined(__ANDROID__)
|
|
// Android entry point
|
|
void android_main(android_app* state)
|
|
#elif defined(__linux__)
|
|
// Linux entry point
|
|
int main(const int argc, const char *argv[])
|
|
#endif
|
|
{
|
|
#if defined(__ANDROID__)
|
|
// Removing this may cause the compiler to omit the main entry point
|
|
// which would make the application crash at start
|
|
app_dummy();
|
|
#endif
|
|
vulkanExample = new VulkanExample();
|
|
#if defined(_WIN32)
|
|
vulkanExample->setupWindow(hInstance, WndProc);
|
|
#elif defined(__ANDROID__)
|
|
// Attach vulkan example to global android application state
|
|
state->userData = vulkanExample;
|
|
state->onAppCmd = VulkanExample::handleAppCommand;
|
|
state->onInputEvent = VulkanExample::handleAppInput;
|
|
vulkanExample->androidApp = state;
|
|
#elif defined(__linux__)
|
|
vulkanExample->setupWindow();
|
|
#endif
|
|
#if !defined(__ANDROID__)
|
|
vulkanExample->initSwapchain();
|
|
vulkanExample->prepare();
|
|
#endif
|
|
vulkanExample->renderLoop();
|
|
delete(vulkanExample);
|
|
#if !defined(__ANDROID__)
|
|
return 0;
|
|
#endif
|
|
} |