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#include "vulkan_common.h"
namespace Donut::RHI
{
auto VulkanDevice::create_buffer(BufferType type, size_t size, const void* data) -> Ref<Buffer>
{
VkBufferUsageFlags usage = type == BufferType::Index ? VK_BUFFER_USAGE_INDEX_BUFFER_BIT
: type == BufferType::Uniform ? VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT
: VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
VkBuffer buf = VK_NULL_HANDLE; VkDeviceMemory mem = VK_NULL_HANDLE;
create_buffer_raw(size, usage, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, buf, mem);
void* mapped = nullptr; vkMapMemory(m_device, mem, 0, size, 0, &mapped);
if (data && mapped) std::memcpy(mapped, data, size);
return create_ref<VkBufferR>(m_device, buf, mem, mapped, size);
}
auto VulkanDevice::create_texture(int w, int h, Format format, Filter filter, const void* data) -> Ref<Texture>
{
auto tex = create_ref<VkTextureR>(); tex->m_device = m_device;
VkFormat fmt = vk_format(format);
VkImageCreateInfo ici{ VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO };
ici.imageType = VK_IMAGE_TYPE_2D; ici.format = fmt; ici.extent = { (uint32_t)w, (uint32_t)h, 1 };
ici.mipLevels = 1; ici.arrayLayers = 1; ici.samples = VK_SAMPLE_COUNT_1_BIT;
ici.tiling = VK_IMAGE_TILING_OPTIMAL; ici.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
vkCreateImage(m_device, &ici, nullptr, &tex->m_image);
VkMemoryRequirements req{}; vkGetImageMemoryRequirements(m_device, tex->m_image, &req);
VkMemoryAllocateInfo ai{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO };
ai.allocationSize = req.size; ai.memoryTypeIndex = find_memory_type(req.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
vkAllocateMemory(m_device, &ai, nullptr, &tex->m_mem);
vkBindImageMemory(m_device, tex->m_image, tex->m_mem, 0);
size_t bpp = format == Format::RGBA16F ? 8 : 4;
VkDeviceSize sz = (VkDeviceSize)w * h * bpp;
VkBuffer staging = VK_NULL_HANDLE; VkDeviceMemory staging_mem = VK_NULL_HANDLE;
create_buffer_raw(sz, VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, staging, staging_mem);
void* mp = nullptr; vkMapMemory(m_device, staging_mem, 0, sz, 0, &mp);
if (data) std::memcpy(mp, data, sz); else std::memset(mp, 0, sz);
vkUnmapMemory(m_device, staging_mem);
VkCommandBufferAllocateInfo cbai{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO };
cbai.commandPool = m_command_pool; cbai.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; cbai.commandBufferCount = 1;
VkCommandBuffer cmd; vkAllocateCommandBuffers(m_device, &cbai, &cmd);
VkCommandBufferBeginInfo bi{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO }; bi.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
vkBeginCommandBuffer(cmd, &bi);
VkImageMemoryBarrier b{ VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER };
b.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED; b.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
b.image = tex->m_image; b.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
b.srcAccessMask = 0; b.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
vkCmdPipelineBarrier(cmd, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &b);
VkBufferImageCopy copy{}; copy.imageSubresource = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1 }; copy.imageExtent = { (uint32_t)w, (uint32_t)h, 1 };
vkCmdCopyBufferToImage(cmd, staging, tex->m_image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, ©);
VkImageMemoryBarrier r = b; r.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; r.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
r.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; r.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
vkCmdPipelineBarrier(cmd, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &r);
vkEndCommandBuffer(cmd);
VkSubmitInfo si{ VK_STRUCTURE_TYPE_SUBMIT_INFO }; si.commandBufferCount = 1; si.pCommandBuffers = &cmd;
vkQueueSubmit(m_graphics_queue, 1, &si, VK_NULL_HANDLE); vkQueueWaitIdle(m_graphics_queue);
vkFreeCommandBuffers(m_device, m_command_pool, 1, &cmd);
vkDestroyBuffer(m_device, staging, nullptr); vkFreeMemory(m_device, staging_mem, nullptr);
VkImageViewCreateInfo vci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO };
vci.image = tex->m_image; vci.viewType = VK_IMAGE_VIEW_TYPE_2D; vci.format = fmt;
vci.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
vkCreateImageView(m_device, &vci, nullptr, &tex->m_view);
VkSamplerCreateInfo smci{ VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO };
smci.magFilter = vk_filter(filter); smci.minFilter = vk_filter(filter);
smci.addressModeU = smci.addressModeV = smci.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
vkCreateSampler(m_device, &smci, nullptr, &tex->m_sampler);
return tex;
}
auto VulkanDevice::create_render_target(int w, int h, Format color, Format depth, Filter filter, int /*mips*/) -> Ref<RenderTarget>
{
auto rt = create_ref<VkRenderTargetR>();
rt->m_device = m_device; rt->m_w = w; rt->m_h = h;
VkFormat cfmt = (color == Format::Swapchain) ? m_swapchain_format : vk_format(color);
VkImageCreateInfo ici{ VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO };
ici.imageType = VK_IMAGE_TYPE_2D; ici.format = cfmt; ici.extent = { (uint32_t)w, (uint32_t)h, 1 };
ici.mipLevels = 1; ici.arrayLayers = 1; ici.samples = VK_SAMPLE_COUNT_1_BIT;
// TRANSFER_SRC because export reads targets back with a copy. MoltenVK never
// minded it missing; a desktop driver is within its rights to hand back garbage.
ici.tiling = VK_IMAGE_TILING_OPTIMAL;
ici.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
vkCreateImage(m_device, &ici, nullptr, &rt->m_image);
VkMemoryRequirements req{}; vkGetImageMemoryRequirements(m_device, rt->m_image, &req);
VkMemoryAllocateInfo ai{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO };
ai.allocationSize = req.size; ai.memoryTypeIndex = find_memory_type(req.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
vkAllocateMemory(m_device, &ai, nullptr, &rt->m_mem);
vkBindImageMemory(m_device, rt->m_image, rt->m_mem, 0);
VkImageViewCreateInfo vci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO };
vci.image = rt->m_image; vci.viewType = VK_IMAGE_VIEW_TYPE_2D; vci.format = cfmt;
vci.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
vkCreateImageView(m_device, &vci, nullptr, &rt->m_view);
VkSamplerCreateInfo smci{ VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO };
smci.magFilter = vk_filter(filter); smci.minFilter = vk_filter(filter);
smci.addressModeU = smci.addressModeV = smci.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
vkCreateSampler(m_device, &smci, nullptr, &rt->m_sampler);
// optional depth attachment (for off-screen passes that need a depth test).
rt->m_has_depth = depth != Format::None;
VkFormat dfmt = VK_FORMAT_UNDEFINED;
if (rt->m_has_depth)
{
dfmt = vk_format(depth);
VkImageCreateInfo dici{ VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO };
dici.imageType = VK_IMAGE_TYPE_2D; dici.format = dfmt; dici.extent = { (uint32_t)w, (uint32_t)h, 1 };
dici.mipLevels = 1; dici.arrayLayers = 1; dici.samples = VK_SAMPLE_COUNT_1_BIT;
dici.tiling = VK_IMAGE_TILING_OPTIMAL; dici.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
vkCreateImage(m_device, &dici, nullptr, &rt->m_depth_image);
VkMemoryRequirements dreq{}; vkGetImageMemoryRequirements(m_device, rt->m_depth_image, &dreq);
VkMemoryAllocateInfo dai{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO };
dai.allocationSize = dreq.size; dai.memoryTypeIndex = find_memory_type(dreq.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
vkAllocateMemory(m_device, &dai, nullptr, &rt->m_depth_mem);
vkBindImageMemory(m_device, rt->m_depth_image, rt->m_depth_mem, 0);
VkImageViewCreateInfo dvci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO };
dvci.image = rt->m_depth_image; dvci.viewType = VK_IMAGE_VIEW_TYPE_2D; dvci.format = dfmt;
dvci.subresourceRange = { VK_IMAGE_ASPECT_DEPTH_BIT, 0, 1, 0, 1 };
vkCreateImageView(m_device, &dvci, nullptr, &rt->m_depth_view);
}
rt->m_pass = get_render_pass(cfmt, dfmt, false); // off-screen (sampled) target
VkImageView atts[2] = { rt->m_view, rt->m_depth_view };
VkFramebufferCreateInfo fbci{ VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO };
fbci.renderPass = rt->m_pass; fbci.attachmentCount = rt->m_has_depth ? 2u : 1u; fbci.pAttachments = atts;
fbci.width = w; fbci.height = h; fbci.layers = 1;
vkCreateFramebuffer(m_device, &fbci, nullptr, &rt->m_fb);
rt->m_color.m_device = m_device; rt->m_color.m_view = rt->m_view; rt->m_color.m_sampler = rt->m_sampler; rt->m_color.m_owns = false;
return rt;
}
// builds an environment cubemap from an equirectangular HDRI: render the 6
// faces with the EquirectToCubemap pipeline, then a full mip chain by
// linear down-blits (so divergence-based LOD reads a blurred sky). returns
// a Texture owning the cube image/view/sampler.
auto VulkanDevice::create_pipeline(const PipelineDesc& desc) -> Ref<Pipeline>
{
auto p = create_ref<VkPipelineR>(); p->m_device = m_device; p->m_resources = desc.resources;
std::vector<VkDescriptorSetLayoutBinding> binds;
for (const auto& r : desc.resources)
{
VkDescriptorSetLayoutBinding b{};
b.binding = r.binding; b.descriptorCount = 1;
b.descriptorType = r.kind == ResourceKind::UniformBuffer ? VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER : VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
b.stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT;
binds.push_back(b);
}
VkDescriptorSetLayoutCreateInfo dslci{ VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO };
dslci.bindingCount = (uint32_t)binds.size(); dslci.pBindings = binds.data();
vkCreateDescriptorSetLayout(m_device, &dslci, nullptr, &p->m_set_layout);
VkPipelineLayoutCreateInfo plci{ VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO };
plci.setLayoutCount = 1; plci.pSetLayouts = &p->m_set_layout;
vkCreatePipelineLayout(m_device, &plci, nullptr, &p->m_layout);
VkShaderModule vmod = VK_NULL_HANDLE, fmod = VK_NULL_HANDLE;
if (!create_shader_module("assets/shaders/generated/" + desc.shader + ".vertexMain.spv", vmod) ||
!create_shader_module("assets/shaders/generated/" + desc.shader + ".fragmentMain.spv", fmod))
{ DONUT_ERROR("Vulkan RHI: shader '{}' modules failed", desc.shader); return p; }
VkPipelineShaderStageCreateInfo stages[2]{};
stages[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; stages[0].stage = VK_SHADER_STAGE_VERTEX_BIT; stages[0].module = vmod; stages[0].pName = "main";
stages[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; stages[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT; stages[1].module = fmod; stages[1].pName = "main";
VkVertexInputBindingDescription vib{ 0, desc.vertex_layout.stride, VK_VERTEX_INPUT_RATE_VERTEX };
std::vector<VkVertexInputAttributeDescription> vias;
for (const auto& a : desc.vertex_layout.attributes)
vias.push_back({ a.location, 0, vk_attr_format(a.components), a.offset });
VkPipelineVertexInputStateCreateInfo vin{ VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO };
vin.vertexBindingDescriptionCount = desc.vertex_layout.stride ? 1 : 0; vin.pVertexBindingDescriptions = &vib;
vin.vertexAttributeDescriptionCount = (uint32_t)vias.size(); vin.pVertexAttributeDescriptions = vias.data();
VkPipelineInputAssemblyStateCreateInfo ia{ VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO }; ia.topology = vk_topology(desc.topology);
VkPipelineViewportStateCreateInfo vps{ VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO }; vps.viewportCount = 1; vps.scissorCount = 1;
VkDynamicState dyn[2] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
VkPipelineDynamicStateCreateInfo dsci{ VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO }; dsci.dynamicStateCount = 2; dsci.pDynamicStates = dyn;
VkPipelineRasterizationStateCreateInfo rs{ VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO };
rs.polygonMode = VK_POLYGON_MODE_FILL; rs.cullMode = vk_cull(desc.cull); rs.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; rs.lineWidth = 1.0f;
VkPipelineMultisampleStateCreateInfo ms{ VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO }; ms.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
VkPipelineDepthStencilStateCreateInfo ds{ VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO };
ds.depthTestEnable = desc.depth_test ? VK_TRUE : VK_FALSE; ds.depthWriteEnable = desc.depth_write ? VK_TRUE : VK_FALSE; ds.depthCompareOp = vk_compare(desc.depth_op);
VkPipelineColorBlendAttachmentState cba{};
cba.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
if (desc.blend == BlendMode::AlphaBlend)
{
cba.blendEnable = VK_TRUE;
cba.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA; cba.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA; cba.colorBlendOp = VK_BLEND_OP_ADD;
cba.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE; cba.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO; cba.alphaBlendOp = VK_BLEND_OP_ADD;
}
VkPipelineColorBlendStateCreateInfo cb{ VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO }; cb.attachmentCount = 1; cb.pAttachments = &cba;
VkGraphicsPipelineCreateInfo gpci{ VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO };
gpci.stageCount = 2; gpci.pStages = stages;
gpci.pVertexInputState = &vin; gpci.pInputAssemblyState = &ia; gpci.pViewportState = &vps;
gpci.pRasterizationState = &rs; gpci.pMultisampleState = &ms; gpci.pColorBlendState = &cb; gpci.pDynamicState = &dsci;
// resolve the target's attachment signature to a (cached) render pass.
// pipeline<->pass compatibility is by attachment format, so this is the
// same pass the matching swapchain / render target renders into.
VkFormat pcolor = (desc.target.color == Format::Swapchain) ? m_swapchain_format : vk_format(desc.target.color);
VkFormat pdepth = (desc.target.depth == Format::None) ? VK_FORMAT_UNDEFINED : vk_format(desc.target.depth);
bool present = desc.target.color == Format::Swapchain;
if (pdepth != VK_FORMAT_UNDEFINED) gpci.pDepthStencilState = &ds;
gpci.layout = p->m_layout;
gpci.renderPass = get_render_pass(pcolor, pdepth, present);
gpci.subpass = 0;
VkResult pr = vkCreateGraphicsPipelines(m_device, VK_NULL_HANDLE, 1, &gpci, nullptr, &p->m_pipeline);
vkDestroyShaderModule(m_device, vmod, nullptr); vkDestroyShaderModule(m_device, fmod, nullptr);
if (pr != VK_SUCCESS) DONUT_ERROR("Vulkan RHI: pipeline '{}' creation failed ({})", desc.shader, (int)pr);
return p;
}
}
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