// ============================================= // Aster: model_render.cpp // Copyright (c) 2020-2024 Anish Bhobe // ============================================= #include "buffer.h" #include "constants.h" #include "context.h" #include "device.h" #include "global.h" #include "image.h" #include "physical_device.h" #include "pipeline.h" #include "swapchain.h" #include "window.h" #include "frame.h" #include "helpers.h" #include "model_loader.h" #include "pipeline_utils.h" #include "render_resource_manager.h" #include #include #include #include constexpr u32 MAX_FRAMES_IN_FLIGHT = 3; constexpr auto MODEL_FILE = "model/Box.glb"; struct ImageFile { void *m_Data = nullptr; u32 m_Width = 0; u32 m_Height = 0; u32 m_NumChannels = 0; bool m_Constant = false; bool Load(cstr fileName); bool Load(vec4 color); [[nodiscard]] usize GetSize() const; ~ImageFile(); }; struct Camera { mat4 m_Model; mat4 m_View; mat4 m_Perspective; }; int main(int, char **) { MIN_LOG_LEVEL(Logger::LogType::eInfo); Context context = {"ModelRender [WIP]", VERSION}; Window window = {"ModelRender [WIP] (Aster)", &context, {640, 480}}; PhysicalDevices physicalDevices = {&window, &context}; PhysicalDevice deviceToUse = FindSuitableDevice(physicalDevices); INFO("Using {} as the primary device.", deviceToUse.m_DeviceProperties.deviceName.data()); Features enabledDeviceFeatures = { .m_Vulkan10Features = {.samplerAnisotropy = true}, .m_Vulkan12Features = { .descriptorIndexing = true, .shaderSampledImageArrayNonUniformIndexing = true, .shaderStorageBufferArrayNonUniformIndexing = true, .shaderStorageImageArrayNonUniformIndexing = true, .descriptorBindingUniformBufferUpdateAfterBind = true, // Not related to Bindless .descriptorBindingSampledImageUpdateAfterBind = true, .descriptorBindingStorageImageUpdateAfterBind = true, .descriptorBindingStorageBufferUpdateAfterBind = true, .descriptorBindingPartiallyBound = true, .runtimeDescriptorArray = true, }, .m_Vulkan13Features = {.dynamicRendering = true}, }; QueueAllocation queueAllocation = FindAppropriateQueueAllocation(&deviceToUse); Device device = {&context, &deviceToUse, &enabledDeviceFeatures, {queueAllocation}, "Primary Device"}; vk::Queue commandQueue = device.GetQueue(queueAllocation.m_Family, 0); Swapchain swapchain = {&window, &device, "Primary Chain"}; RenderResourceManager resourceManager(&device, 10); Pipeline pipeline = CreatePipeline(&device, &swapchain, &resourceManager); Camera camera = { .m_Model = {1.0f}, .m_View = glm::lookAt(vec3(0.0f, 2.0f, 2.0f), vec3(0.0f), vec3(0.0f, 1.0f, 0.0f)), .m_Perspective = glm::perspective( 70_deg, Cast(swapchain.m_Extent.width) / Cast(swapchain.m_Extent.height), 0.1f, 100.0f), }; vk::DescriptorPool descriptorPool; vk::DescriptorSet descriptorSet; { vk::DescriptorSetLayout descriptorSetLayout = pipeline.m_SetLayouts[1]; eastl::array poolSizes = { vk::DescriptorPoolSize{ .type = vk::DescriptorType::eUniformBuffer, .descriptorCount = 1, }, vk::DescriptorPoolSize{ .type = vk::DescriptorType::eCombinedImageSampler, .descriptorCount = 1, }, }; vk::DescriptorPoolCreateInfo descriptorPoolCreateInfo = { .maxSets = 1, .poolSizeCount = Cast(poolSizes.size()), .pPoolSizes = poolSizes.data()}; AbortIfFailed(device.m_Device.createDescriptorPool(&descriptorPoolCreateInfo, nullptr, &descriptorPool)); vk::DescriptorSetAllocateInfo descriptorSetAllocateInfo = { .descriptorPool = descriptorPool, .descriptorSetCount = 1, .pSetLayouts = &descriptorSetLayout, }; AbortIfFailed(device.m_Device.allocateDescriptorSets(&descriptorSetAllocateInfo, &descriptorSet)); } vk::CommandPool copyPool; vk::CommandBuffer copyBuffer; { vk::CommandPoolCreateInfo poolCreateInfo = { .flags = vk::CommandPoolCreateFlagBits::eTransient, .queueFamilyIndex = queueAllocation.m_Family, }; AbortIfFailedM(device.m_Device.createCommandPool(&poolCreateInfo, nullptr, ©Pool), "Copy command pool creation failed."); vk::CommandBufferAllocateInfo bufferAllocateInfo = { .commandPool = copyPool, .level = vk::CommandBufferLevel::ePrimary, .commandBufferCount = 1, }; AbortIfFailedM(device.m_Device.allocateCommandBuffers(&bufferAllocateInfo, ©Buffer), "Copy command buffer allocation failed."); } eastl::array vertices = { Vertex{.m_Position = vec3(0.5f, 0.5f, -0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(1.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, 0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, -0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, 0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(0.5f, -0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 0.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(-0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(0.0f, 1.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, 0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(-0.5f, 0.5f, -0.5f), .m_TexCoord0 = vec2(1.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, 0.5f), .m_TexCoord0 = vec2(0.0f, 1.0f)}, Vertex{.m_Position = vec3(-0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, -0.5f), .m_TexCoord0 = vec2(1.0f, 0.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, -0.5f, 0.5f), .m_TexCoord0 = vec2(0.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(1.0f, 0.0f)}, Vertex{.m_Position = vec3(0.5f, -0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, -0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, 0.5f), .m_TexCoord0 = vec2(0.0f, 1.0f)}, Vertex{.m_Position = vec3(-0.5f, -0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, -0.5f), .m_TexCoord0 = vec2(1.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, 0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, 0.5f, -0.5f), .m_TexCoord0 = vec2(0.0f, 0.0f)}, Vertex{.m_Position = vec3(-0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(0.0f, 1.0f)}, Vertex{.m_Position = vec3(0.5f, 0.5f, 0.5f), .m_TexCoord0 = vec2(1.0f, 1.0f)}, }; ImageFile crateImageFile; ImageFile plainImageFile; assert(crateImageFile.Load("image/container.jpg")); INFO("Image {}x{} : {} channels", crateImageFile.m_Width, crateImageFile.m_Height, crateImageFile.m_NumChannels); assert(plainImageFile.Load({0.7f, 0.4f, 0.1f, 1.0f})); UniformStorageBuffer pvbo; Texture crateTexture; Texture plainTexture; crateTexture.Init(&device, {crateImageFile.m_Width, crateImageFile.m_Height}, vk::Format::eR8G8B8A8Srgb, false, "Crate Texture"); plainTexture.Init(&device, {crateImageFile.m_Width, crateImageFile.m_Height}, vk::Format::eR8G8B8A8Srgb, false, "Plain Texture"); pvbo.Init(&device, vertices.size() * sizeof vertices[0], "Pull VBO"); pvbo.Write(&device, 0, pvbo.GetSize(), vertices.data()); auto crateTextureId = resourceManager.Commit(&crateTexture); auto plainTextureId = resourceManager.Commit(&plainTexture); auto pvboBufferId = resourceManager.Commit(&pvbo); { StagingBuffer imageStaging1, imageStaging2; imageStaging1.Init(&device, crateImageFile.GetSize(), "Image Staging 1"); imageStaging1.Write(&device, 0, crateImageFile.GetSize(), crateImageFile.m_Data); imageStaging2.Init(&device, plainImageFile.GetSize(), "Image Staging 2"); imageStaging2.Write(&device, 0, plainImageFile.GetSize(), plainImageFile.m_Data); eastl::array imageReadyToWrite = { vk::ImageMemoryBarrier{ .oldLayout = vk::ImageLayout::eUndefined, .newLayout = vk::ImageLayout::eTransferDstOptimal, .srcQueueFamilyIndex = queueAllocation.m_Family, .dstQueueFamilyIndex = queueAllocation.m_Family, .image = crateTexture.m_Image, .subresourceRange = { .aspectMask = vk::ImageAspectFlagBits::eColor, .baseMipLevel = 0, .levelCount = 1, .baseArrayLayer = 0, .layerCount = 1, }, }, vk::ImageMemoryBarrier{ .oldLayout = vk::ImageLayout::eUndefined, .newLayout = vk::ImageLayout::eTransferDstOptimal, .srcQueueFamilyIndex = queueAllocation.m_Family, .dstQueueFamilyIndex = queueAllocation.m_Family, .image = plainTexture.m_Image, .subresourceRange = { .aspectMask = vk::ImageAspectFlagBits::eColor, .baseMipLevel = 0, .levelCount = 1, .baseArrayLayer = 0, .layerCount = 1, }, }, }; eastl::array imageReadyToRead = { vk::ImageMemoryBarrier{ .oldLayout = vk::ImageLayout::eTransferDstOptimal, .newLayout = vk::ImageLayout::eShaderReadOnlyOptimal, .srcQueueFamilyIndex = queueAllocation.m_Family, .dstQueueFamilyIndex = queueAllocation.m_Family, .image = crateTexture.m_Image, .subresourceRange = { .aspectMask = vk::ImageAspectFlagBits::eColor, .baseMipLevel = 0, .levelCount = 1, .baseArrayLayer = 0, .layerCount = 1, }, }, vk::ImageMemoryBarrier{ .oldLayout = vk::ImageLayout::eTransferDstOptimal, .newLayout = vk::ImageLayout::eShaderReadOnlyOptimal, .srcQueueFamilyIndex = queueAllocation.m_Family, .dstQueueFamilyIndex = queueAllocation.m_Family, .image = plainTexture.m_Image, .subresourceRange = { .aspectMask = vk::ImageAspectFlagBits::eColor, .baseMipLevel = 0, .levelCount = 1, .baseArrayLayer = 0, .layerCount = 1, }, }, }; vk::Fence fence; vk::FenceCreateInfo fenceCreateInfo = {}; AbortIfFailed(device.m_Device.createFence(&fenceCreateInfo, nullptr, &fence)); vk::CommandBufferBeginInfo beginInfo = {.flags = vk::CommandBufferUsageFlagBits::eOneTimeSubmit}; AbortIfFailed(copyBuffer.begin(&beginInfo)); copyBuffer.pipelineBarrier(vk::PipelineStageFlagBits::eHost, vk::PipelineStageFlagBits::eTransfer, {}, 0, nullptr, 0, nullptr, Cast(imageReadyToWrite.size()), imageReadyToWrite.data()); vk::BufferImageCopy imageCopy = { .bufferOffset = 0, .bufferRowLength = crateImageFile.m_Width, .bufferImageHeight = crateImageFile.m_Height, .imageSubresource = { .aspectMask = vk::ImageAspectFlagBits::eColor, .mipLevel = 0, .baseArrayLayer = 0, .layerCount = 1, }, .imageOffset = {}, .imageExtent = {crateImageFile.m_Width, crateImageFile.m_Height, 1}, }; copyBuffer.copyBufferToImage(imageStaging1.m_Buffer, crateTexture.m_Image, vk::ImageLayout::eTransferDstOptimal, 1, &imageCopy); copyBuffer.copyBufferToImage(imageStaging2.m_Buffer, plainTexture.m_Image, vk::ImageLayout::eTransferDstOptimal, 1, &imageCopy); copyBuffer.pipelineBarrier(vk::PipelineStageFlagBits::eTransfer, vk::PipelineStageFlagBits::eFragmentShader, {}, 0, nullptr, 0, nullptr, Cast(imageReadyToRead.size()), imageReadyToRead.data()); AbortIfFailed(copyBuffer.end()); vk::SubmitInfo submitInfo = { .commandBufferCount = 1, .pCommandBuffers = ©Buffer, }; AbortIfFailed(commandQueue.submit(1, &submitInfo, fence)); INFO("Submit copy"); AbortIfFailed(device.m_Device.waitForFences(1, &fence, true, MaxValue)); INFO("Fence wait"); AbortIfFailedM(device.m_Device.resetCommandPool(copyPool, {}), "Couldn't reset command pool."); device.m_Device.destroy(fence, nullptr); imageStaging1.Destroy(&device); imageStaging2.Destroy(&device); } UniformBuffer ubo; ubo.Init(&device, sizeof camera, "Camera UBO"); ubo.Write(&device, 0, sizeof camera, &camera); vk::DescriptorBufferInfo descriptorBufferInfo = { .buffer = ubo.m_Buffer, .offset = 0, .range = ubo.GetSize(), }; eastl::array writeDescriptors = { vk::WriteDescriptorSet{ .dstSet = descriptorSet, .dstBinding = 0, .dstArrayElement = 0, .descriptorCount = 1, .descriptorType = vk::DescriptorType::eUniformBuffer, .pBufferInfo = &descriptorBufferInfo, }, }; device.m_Device.updateDescriptorSets(Cast(writeDescriptors.size()), writeDescriptors.data(), 0, nullptr); resourceManager.Update(); // Persistent variables vk::Viewport viewport = { .x = 0, .y = Cast(swapchain.m_Extent.height), .width = Cast(swapchain.m_Extent.width), .height = -Cast(swapchain.m_Extent.height), .minDepth = 0.0, .maxDepth = 1.0, }; vk::Rect2D scissor = { .offset = {0, 0}, .extent = swapchain.m_Extent, }; auto fnResizeViewportScissor = [&viewport, &scissor](vk::Extent2D extent) { viewport.y = Cast(extent.height); viewport.width = Cast(extent.width); viewport.height = -Cast(extent.height); scissor.extent = extent; }; swapchain.RegisterResizeCallback(fnResizeViewportScissor); vk::ImageSubresourceRange subresourceRange = { .aspectMask = vk::ImageAspectFlagBits::eColor, .baseMipLevel = 0, .levelCount = 1, .baseArrayLayer = 0, .layerCount = 1, }; vk::ImageMemoryBarrier topOfThePipeBarrier = { .oldLayout = vk::ImageLayout::eUndefined, .newLayout = vk::ImageLayout::eColorAttachmentOptimal, .srcQueueFamilyIndex = queueAllocation.m_Family, .dstQueueFamilyIndex = queueAllocation.m_Family, .subresourceRange = subresourceRange, }; vk::ImageMemoryBarrier renderToPresentBarrier = { .oldLayout = vk::ImageLayout::eColorAttachmentOptimal, .newLayout = vk::ImageLayout::ePresentSrcKHR, .srcQueueFamilyIndex = queueAllocation.m_Family, .dstQueueFamilyIndex = queueAllocation.m_Family, .subresourceRange = subresourceRange, }; FrameManager frameManager = {&device, queueAllocation.m_Family, MAX_FRAMES_IN_FLIGHT}; eastl::fixed_vector depthImages(frameManager.m_FramesInFlight); { u32 depthImageIdx = 0; for (auto &depthImage : depthImages) { auto name = fmt::format("Depth {}", depthImageIdx++); depthImage.Init(&device, swapchain.m_Extent, name.c_str()); } } auto fnRecreateDepthBuffers = [&device, &depthImages](vk::Extent2D extent) { u32 depthImageIdx = 0; for (auto &depthImage : depthImages) { auto name = fmt::format("Depth {}", depthImageIdx++); depthImage.Destroy(&device); depthImage.Init(&device, extent, name.c_str()); } }; swapchain.RegisterResizeCallback(fnRecreateDepthBuffers); Time::Init(); Handle *pushData = &crateTextureId; Handle *otherPushData = &plainTextureId; bool prevPressed = false; auto isSpaceJustPressed = [&prevPressed, &window] { const bool pressed = glfwGetKey(window.m_Window, GLFW_KEY_SPACE) == GLFW_PRESS; const bool justPressed = pressed & !prevPressed; prevPressed = pressed; return justPressed; }; INFO("Starting loop"); while (window.Poll()) { Time::Update(); if (isSpaceJustPressed()) { eastl::swap(pushData, otherPushData); } camera.m_Model *= rotate(mat4{1.0f}, Cast(45.0_deg * Time::m_Delta), vec3(0.0f, 1.0f, 0.0f)); ubo.Write(&device, 0, sizeof camera, &camera); Frame *currentFrame = frameManager.GetNextFrame(&swapchain, &window); u32 imageIndex = currentFrame->m_ImageIdx; vk::ImageView currentImageView = swapchain.m_ImageViews[imageIndex]; vk::Image currentImage = swapchain.m_Images[imageIndex]; vk::CommandBuffer cmd = currentFrame->m_CommandBuffer; vk::ImageView currentDepthImageView = depthImages[currentFrame->m_FrameIdx].m_View; topOfThePipeBarrier.image = currentImage; renderToPresentBarrier.image = currentImage; vk::CommandBufferBeginInfo beginInfo = {.flags = vk::CommandBufferUsageFlagBits::eOneTimeSubmit}; AbortIfFailed(cmd.begin(&beginInfo)); cmd.pipelineBarrier(vk::PipelineStageFlagBits::eTopOfPipe, vk::PipelineStageFlagBits::eColorAttachmentOutput, {}, 0, nullptr, 0, nullptr, 1, &topOfThePipeBarrier); // Render eastl::array attachmentInfos = { vk::RenderingAttachmentInfo{ .imageView = currentImageView, .imageLayout = vk::ImageLayout::eColorAttachmentOptimal, .resolveMode = vk::ResolveModeFlagBits::eNone, .loadOp = vk::AttachmentLoadOp::eClear, .storeOp = vk::AttachmentStoreOp::eStore, .clearValue = vk::ClearColorValue{0.0f, 0.0f, 0.0f, 1.0f}, }, }; vk::RenderingAttachmentInfo depthAttachment = { .imageView = currentDepthImageView, .imageLayout = vk::ImageLayout::eDepthAttachmentOptimal, .resolveMode = vk::ResolveModeFlagBits::eNone, .loadOp = vk::AttachmentLoadOp::eClear, .storeOp = vk::AttachmentStoreOp::eDontCare, .clearValue = vk::ClearDepthStencilValue{.depth = 1.0f, .stencil = 0}, }; vk::RenderingInfo renderingInfo = { .renderArea = {.extent = swapchain.m_Extent}, .layerCount = 1, .colorAttachmentCount = Cast(attachmentInfos.size()), .pColorAttachments = attachmentInfos.data(), .pDepthAttachment = &depthAttachment, }; cmd.beginRendering(&renderingInfo); cmd.setViewport(0, 1, &viewport); cmd.setScissor(0, 1, &scissor); cmd.bindPipeline(vk::PipelineBindPoint::eGraphics, pipeline.m_Pipeline); cmd.pushConstants(pipeline.m_Layout, vk::ShaderStageFlagBits::eAll, 0, sizeof *pushData, pushData); cmd.pushConstants(pipeline.m_Layout, vk::ShaderStageFlagBits::eAll, sizeof *pushData, sizeof pvboBufferId, &pvboBufferId); cmd.bindDescriptorSets(vk::PipelineBindPoint::eGraphics, pipeline.m_Layout, 0, 1, &resourceManager.m_DescriptorSet, 0, nullptr); cmd.bindDescriptorSets(vk::PipelineBindPoint::eGraphics, pipeline.m_Layout, 1, 1, &descriptorSet, 0, nullptr); cmd.draw(Cast(vertices.size()), 1, 0, 0); cmd.endRendering(); cmd.pipelineBarrier(vk::PipelineStageFlagBits::eColorAttachmentOutput, vk::PipelineStageFlagBits::eBottomOfPipe, {}, 0, nullptr, 0, nullptr, 1, &renderToPresentBarrier); AbortIfFailed(cmd.end()); vk::PipelineStageFlags waitDstStage = vk::PipelineStageFlagBits::eColorAttachmentOutput; vk::SubmitInfo submitInfo = { .waitSemaphoreCount = 1, .pWaitSemaphores = ¤tFrame->m_ImageAcquireSem, .pWaitDstStageMask = &waitDstStage, .commandBufferCount = 1, .pCommandBuffers = &cmd, .signalSemaphoreCount = 1, .pSignalSemaphores = ¤tFrame->m_RenderFinishSem, }; AbortIfFailed(commandQueue.submit(1, &submitInfo, currentFrame->m_FrameAvailableFence)); currentFrame->Present(commandQueue, &swapchain, &window); } AbortIfFailed(device.m_Device.waitIdle()); for (auto &depthImage : depthImages) { depthImage.Destroy(&device); } ubo.Destroy(&device); device.m_Device.destroy(descriptorPool, nullptr); device.m_Device.destroy(copyPool, nullptr); crateTexture.Destroy(&device); plainTexture.Destroy(&device); pvbo.Destroy(&device); return 0; } bool ImageFile::Load(vec4 color) { constexpr usize size = 512llu * 512llu * 4llu; u8 *pData = new u8[size]; const vec4 color255 = 255.999f * color; const glm::vec<4, u8> color8 = color255; for (usize i = 0; i < size; i += 4) { memcpy(pData + i, &color8, sizeof color8); } m_Data = pData; m_Constant = true; m_Height = 512; m_Width = 512; m_NumChannels = 4; return true; } bool ImageFile::Load(cstr fileName) { int width, height, nrChannels; m_Data = stbi_load(fileName, &width, &height, &nrChannels, 4); ERROR_IF(!m_Data, "Could not load {}", fileName); if (!m_Data) { return false; } m_Width = width; m_Height = height; m_NumChannels = 4; m_Constant = false; return true; } usize ImageFile::GetSize() const { return Cast(m_Width) * m_Height * m_NumChannels; } ImageFile::~ImageFile() { if (m_Constant) { delete[] Cast(m_Data); } else { stbi_image_free(m_Data); } m_Data = nullptr; }