93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
#include "simple_render_system.hpp"
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// libs
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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/constants.hpp>
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// std
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#include <stdexcept>
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#include <array>
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namespace hk
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{
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struct SimplePushConstantData
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{
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glm::mat2 transform{1.0f};
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glm::vec2 offset;
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alignas(16) glm::vec3 color;
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};
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SimpleRenderSystem::SimpleRenderSystem(Device &device, VkRenderPass renderPass) : m_device{device}
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{
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createPipelineLayout();
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createPipeline(renderPass);
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}
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SimpleRenderSystem::~SimpleRenderSystem()
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{
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vkDestroyPipelineLayout(m_device.device(), m_pipelineLayout, nullptr);
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}
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void SimpleRenderSystem::createPipelineLayout()
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{
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VkPushConstantRange pushConstantRange{};
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pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT;
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pushConstantRange.offset = 0;
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pushConstantRange.size = sizeof(SimplePushConstantData);
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VkPipelineLayoutCreateInfo pipelineLayoutInfo{};
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pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
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pipelineLayoutInfo.setLayoutCount = 0;
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pipelineLayoutInfo.pSetLayouts = nullptr;
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pipelineLayoutInfo.pushConstantRangeCount = 1;
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pipelineLayoutInfo.pPushConstantRanges = &pushConstantRange;
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if (vkCreatePipelineLayout(m_device.device(), &pipelineLayoutInfo, nullptr, &m_pipelineLayout) !=
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VK_SUCCESS)
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{
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throw std::runtime_error("failed to create pipeline layout!");
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}
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}
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void SimpleRenderSystem::createPipeline(VkRenderPass renderPass)
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{
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assert(m_pipelineLayout != nullptr && "Cannot create pipeline before pipeline layout");
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PipelineConfigInfo pipelineConfig{};
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Pipeline::defaultPipelineConfigInfo(pipelineConfig);
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pipelineConfig.renderPass = renderPass;
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pipelineConfig.pipelineLayout = m_pipelineLayout;
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m_pipeline = std::make_unique<Pipeline>(
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m_device,
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"shaders/simple_shader.vert.spv",
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"shaders/simple_shader.frag.spv",
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pipelineConfig);
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}
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void SimpleRenderSystem::renderGameObjects(VkCommandBuffer commandBuffer, std::vector<GameObject> &gameObjects)
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{
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m_pipeline->bind(commandBuffer);
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for (auto &obj : gameObjects)
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{
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obj.m_transform2d.rotation = glm::mod(obj.m_transform2d.rotation + 0.01f, glm::two_pi<float>());
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SimplePushConstantData push{};
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push.offset = obj.m_transform2d.translation;
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push.color = obj.m_color;
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push.transform = obj.m_transform2d.mat2();
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vkCmdPushConstants(
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commandBuffer,
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m_pipelineLayout,
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VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
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0,
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sizeof(SimplePushConstantData),
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&push);
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obj.m_model->bind(commandBuffer);
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obj.m_model->draw(commandBuffer);
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}
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}
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} |