Implemented simple terrain generation
This commit is contained in:
Lorenzo Torres
parent
fb9607b2b1
commit
c0b8d021d4
16 changed files with 825 additions and 32 deletions
434
src/rendering/TerrainPipeline.zig
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434
src/rendering/TerrainPipeline.zig
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@ -0,0 +1,434 @@
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const std = @import("std");
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const Mesh = @import("Mesh.zig");
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const Camera = @import("Camera.zig");
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const vk = @import("vulkan.zig");
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const Texture = vk.Texture;
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const c = vk.c;
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const math = @import("math");
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const gltf = @import("gltf.zig");
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const Allocator = std.mem.Allocator;
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const rendering = @import("rendering.zig");
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const lights = rendering.lights;
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const max_point_lights = 1024;
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layout: c.VkPipelineLayout,
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handle: c.VkPipeline,
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//vertex_buffer: vk.Buffer,
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//index_buffer: vk.Buffer,
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texture_set_layout: c.VkDescriptorSetLayout,
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descriptor_pool: c.VkDescriptorPool,
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descriptor_set: c.VkDescriptorSet,
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descriptor_set_layout: c.VkDescriptorSetLayout,
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heightmap_sampler: vk.Sampler,
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heightmap: c.VkDescriptorSet,
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const Self = @This();
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pub fn init(
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graphics_pipeline: vk.GraphicsPipeline,
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vertex_shader: c.VkShaderModule,
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fragment_shader: c.VkShaderModule) !Self {
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const device = graphics_pipeline.device;
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const swapchain = graphics_pipeline.swapchain;
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const render_pass = graphics_pipeline.render_pass;
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const vertex_shader_stage_info: c.VkPipelineShaderStageCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
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.stage = c.VK_SHADER_STAGE_VERTEX_BIT,
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.module = vertex_shader,
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.pName = "main",
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};
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const fragment_shader_stage_info: c.VkPipelineShaderStageCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
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.stage = c.VK_SHADER_STAGE_FRAGMENT_BIT,
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.module = fragment_shader,
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.pName = "main",
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};
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// TODO: shouldn't this be closer to usage?
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const shader_stage_infos: []const c.VkPipelineShaderStageCreateInfo = &.{ vertex_shader_stage_info, fragment_shader_stage_info };
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const vertex_attributes: []const c.VkVertexInputAttributeDescription = Mesh.Vertex.attributeDescriptions();
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const vertex_bindings: []const c.VkVertexInputBindingDescription = &.{Mesh.Vertex.bindingDescription()};
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const vertex_input_info: c.VkPipelineVertexInputStateCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
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.vertexBindingDescriptionCount = 1,
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.pVertexBindingDescriptions = vertex_bindings.ptr,
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.vertexAttributeDescriptionCount = 3,
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.pVertexAttributeDescriptions = vertex_attributes.ptr,
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};
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const input_assembly_info: c.VkPipelineInputAssemblyStateCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
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.topology = c.VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
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.primitiveRestartEnable = c.VK_FALSE,
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};
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const viewport: c.VkViewport = .{
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.x = 0.0,
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.y = 0.0,
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.width = @floatFromInt(swapchain.extent.width),
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.height = @floatFromInt(swapchain.extent.height),
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.minDepth = 0.0,
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.maxDepth = 1.0,
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};
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const scissor: c.VkRect2D = .{
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.offset = .{
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.x = 0.0,
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.y = 0.0,
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},
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.extent = swapchain.extent,
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};
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const viewport_state_info: c.VkPipelineViewportStateCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
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.viewportCount = 1,
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.pViewports = &viewport,
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.scissorCount = 1,
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.pScissors = &scissor,
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};
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const rasterizer_info: c.VkPipelineRasterizationStateCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
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.depthClampEnable = c.VK_FALSE,
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.rasterizerDiscardEnable = c.VK_FALSE,
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.polygonMode = c.VK_POLYGON_MODE_FILL,
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.lineWidth = 1.0,
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.cullMode = c.VK_CULL_MODE_BACK_BIT,
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.frontFace = c.VK_FRONT_FACE_CLOCKWISE,
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.depthBiasEnable = c.VK_FALSE,
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};
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const multisampling_info: c.VkPipelineMultisampleStateCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
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.sampleShadingEnable = c.VK_FALSE,
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.rasterizationSamples = device.msaa_samples,
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};
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const color_blend_attachment: c.VkPipelineColorBlendAttachmentState = .{
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.colorWriteMask = c.VK_COLOR_COMPONENT_R_BIT | c.VK_COLOR_COMPONENT_G_BIT | c.VK_COLOR_COMPONENT_B_BIT | c.VK_COLOR_COMPONENT_A_BIT,
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.blendEnable = c.VK_TRUE,
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.srcColorBlendFactor = c.VK_BLEND_FACTOR_SRC_ALPHA,
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.dstColorBlendFactor = c.VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
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.colorBlendOp = c.VK_BLEND_OP_ADD,
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.srcAlphaBlendFactor = c.VK_BLEND_FACTOR_ONE,
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.dstAlphaBlendFactor = c.VK_BLEND_FACTOR_ZERO,
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.alphaBlendOp = c.VK_BLEND_OP_ADD,
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};
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const color_blend_info: c.VkPipelineColorBlendStateCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
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.logicOpEnable = c.VK_FALSE,
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.logicOp = c.VK_LOGIC_OP_COPY,
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.attachmentCount = 1,
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.pAttachments = &color_blend_attachment,
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.blendConstants = .{ 0.0, 0.0, 0.0, 0.0 },
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};
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const projection_binding = c.VkDescriptorSetLayoutBinding{
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.binding = 0,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.descriptorCount = 1,
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.stageFlags = c.VK_SHADER_STAGE_VERTEX_BIT,
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};
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const view_binding = c.VkDescriptorSetLayoutBinding{
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.binding = 1,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.descriptorCount = 1,
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.stageFlags = c.VK_SHADER_STAGE_VERTEX_BIT,
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};
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const directional_light_binding = c.VkDescriptorSetLayoutBinding{
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.binding = 2,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.descriptorCount = 1,
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.stageFlags = c.VK_SHADER_STAGE_FRAGMENT_BIT,
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};
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const point_lights_binding = c.VkDescriptorSetLayoutBinding{
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.binding = 5,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.descriptorCount = 1,
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.stageFlags = c.VK_SHADER_STAGE_FRAGMENT_BIT,
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};
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const view_pos_binding = c.VkDescriptorSetLayoutBinding{
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.binding = 3,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.descriptorCount = 1,
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.stageFlags = c.VK_SHADER_STAGE_FRAGMENT_BIT,
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};
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const heightmap_sampler_binding = c.VkDescriptorSetLayoutBinding{
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.binding = 0,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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.descriptorCount = 1,
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.stageFlags = c.VK_SHADER_STAGE_VERTEX_BIT,
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};
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const bindings = [_]c.VkDescriptorSetLayoutBinding{projection_binding, view_binding, directional_light_binding, point_lights_binding, view_pos_binding};
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const texture_bindings = [_]c.VkDescriptorSetLayoutBinding{heightmap_sampler_binding};
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var descriptor_set_layout: c.VkDescriptorSetLayout = undefined;
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var texture_descriptor_set_layout: c.VkDescriptorSetLayout = undefined;
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const descriptor_set_layout_info = c.VkDescriptorSetLayoutCreateInfo{
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.sType = c.VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
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.bindingCount = 5,
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.pBindings = bindings[0..].ptr,
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};
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const texture_descriptor_set_layout_info = c.VkDescriptorSetLayoutCreateInfo{
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.sType = c.VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
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.bindingCount = 1,
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.pBindings = texture_bindings[0..].ptr,
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};
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try vk.mapError(c.vkCreateDescriptorSetLayout(device.handle, &descriptor_set_layout_info, null, &descriptor_set_layout));
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try vk.mapError(c.vkCreateDescriptorSetLayout(device.handle, &texture_descriptor_set_layout_info, null, &texture_descriptor_set_layout));
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var set_layouts = [_]c.VkDescriptorSetLayout{descriptor_set_layout, texture_descriptor_set_layout};
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const lights_range: c.VkPushConstantRange = .{
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.stageFlags = c.VK_SHADER_STAGE_FRAGMENT_BIT,
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.offset = 0,
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.size = 4,
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};
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const range: [1]c.VkPushConstantRange = .{lights_range};
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const layout_info: c.VkPipelineLayoutCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
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.setLayoutCount = 2,
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.pSetLayouts = set_layouts[0..].ptr,
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.pushConstantRangeCount = 1,
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.pPushConstantRanges = range[0..].ptr,
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};
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var layout: c.VkPipelineLayout = undefined;
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try vk.mapError(c.vkCreatePipelineLayout(device.handle, &layout_info, null, @ptrCast(&layout)));
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const depth_stencil: c.VkPipelineDepthStencilStateCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO,
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.depthTestEnable = c.VK_TRUE,
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.depthWriteEnable = c.VK_TRUE,
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.depthCompareOp = c.VK_COMPARE_OP_LESS,
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.depthBoundsTestEnable = c.VK_FALSE,
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.minDepthBounds = 0.0,
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.maxDepthBounds = 1.0,
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.stencilTestEnable = c.VK_FALSE,
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};
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const pipeline_info: c.VkGraphicsPipelineCreateInfo = .{
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.sType = c.VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
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.stageCount = 2,
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.pStages = shader_stage_infos.ptr,
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.pVertexInputState = &vertex_input_info,
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.pInputAssemblyState = &input_assembly_info,
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.pViewportState = &viewport_state_info,
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.pRasterizationState = &rasterizer_info,
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.pMultisampleState = &multisampling_info,
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.pDepthStencilState = &depth_stencil,
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.pColorBlendState = &color_blend_info,
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.pDynamicState = null,
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.layout = layout,
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.renderPass = render_pass.handle,
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.subpass = 0,
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.basePipelineHandle = null,
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.basePipelineIndex = -1,
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};
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var pipeline: c.VkPipeline = undefined;
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try vk.mapError(c.vkCreateGraphicsPipelines(device.handle, null, 1, &pipeline_info, null, @ptrCast(&pipeline)));
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const size = c.VkDescriptorPoolSize{
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.type = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.descriptorCount = 5,
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};
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const sampler_size = c.VkDescriptorPoolSize{
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.type = c.VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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.descriptorCount = 1,
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};
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const sizes = [_]c.VkDescriptorPoolSize {size, sampler_size};
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const descriptor_pool_info = c.VkDescriptorPoolCreateInfo{
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.sType = c.VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO,
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.maxSets = 2,
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.poolSizeCount = 2,
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.pPoolSizes = sizes[0..].ptr,
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};
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var descriptor_pool: c.VkDescriptorPool = undefined;
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try vk.mapError(c.vkCreateDescriptorPool(device.handle, &descriptor_pool_info, null, &descriptor_pool));
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const descriptor_allocate_info = c.VkDescriptorSetAllocateInfo{
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.sType = c.VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
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.descriptorPool = descriptor_pool,
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.descriptorSetCount = 1,
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.pSetLayouts = set_layouts[0..].ptr,
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};
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var descriptor_set: c.VkDescriptorSet = undefined;
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try vk.mapError(c.vkAllocateDescriptorSets(device.handle, &descriptor_allocate_info, &descriptor_set));
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const descriptor_buffer_info = c.VkDescriptorBufferInfo{
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.buffer = graphics_pipeline.projection_buffer.handle,
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.offset = 0,
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.range = graphics_pipeline.projection_buffer.size,
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};
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const write_descriptor_set = c.VkWriteDescriptorSet{
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.sType = c.VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
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.dstSet = descriptor_set,
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.dstBinding = 0,
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.dstArrayElement = 0,
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.descriptorCount = 1,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.pBufferInfo = &descriptor_buffer_info,
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};
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c.vkUpdateDescriptorSets(device.handle, 1, &write_descriptor_set, 0, null);
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const view_descriptor_buffer_info = c.VkDescriptorBufferInfo{
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.buffer = graphics_pipeline.view_buffer.handle,
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.offset = 0,
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.range = graphics_pipeline.view_buffer.size,
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};
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const write_view_descriptor_set = c.VkWriteDescriptorSet{
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.sType = c.VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
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.dstSet = descriptor_set,
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.dstBinding = 1,
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.dstArrayElement = 0,
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.descriptorCount = 1,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.pBufferInfo = &view_descriptor_buffer_info,
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};
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c.vkUpdateDescriptorSets(device.handle, 1, &write_view_descriptor_set, 0, null);
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const directional_light_descriptor_buffer_info = c.VkDescriptorBufferInfo{
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.buffer = graphics_pipeline.directional_light_buffer.handle,
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.offset = 0,
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.range = graphics_pipeline.directional_light_buffer.size,
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};
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const write_directional_light_descriptor_set = c.VkWriteDescriptorSet{
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.sType = c.VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
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.dstSet = descriptor_set,
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.dstBinding = 2,
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.dstArrayElement = 0,
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.descriptorCount = 1,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.pBufferInfo = &directional_light_descriptor_buffer_info,
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};
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c.vkUpdateDescriptorSets(device.handle, 1, &write_directional_light_descriptor_set, 0, null);
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var point_lights_descriptor_buffer_info: c.VkDescriptorBufferInfo = undefined;
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point_lights_descriptor_buffer_info.buffer = graphics_pipeline.point_lights_buffer.handle;
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point_lights_descriptor_buffer_info.offset = 0;
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point_lights_descriptor_buffer_info.range = @sizeOf(lights.PointLight) * max_point_lights;
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const write_point_lights_descriptor_set = c.VkWriteDescriptorSet{
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.sType = c.VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
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.dstSet = descriptor_set,
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.dstBinding = 5,
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.dstArrayElement = 0,
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.descriptorCount = 1,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.pBufferInfo = @ptrCast(&point_lights_descriptor_buffer_info),
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};
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c.vkUpdateDescriptorSets(device.handle, 1, &write_point_lights_descriptor_set, 0, null);
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const view_pos_descriptor_buffer_info = c.VkDescriptorBufferInfo{
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.buffer = graphics_pipeline.view_pos_buffer.handle,
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.offset = 0,
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.range = graphics_pipeline.view_pos_buffer.size,
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};
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const write_view_pos_descriptor_set = c.VkWriteDescriptorSet{
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.sType = c.VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
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.dstSet = descriptor_set,
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.dstBinding = 3,
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.dstArrayElement = 0,
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.descriptorCount = 1,
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.descriptorType = c.VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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.pBufferInfo = &view_pos_descriptor_buffer_info,
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};
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c.vkUpdateDescriptorSets(device.handle, 1, &write_view_pos_descriptor_set, 0, null);
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return .{
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.layout = layout,
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.handle = pipeline,
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.texture_set_layout = texture_descriptor_set_layout,
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.descriptor_pool = descriptor_pool,
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.descriptor_set = descriptor_set,
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.descriptor_set_layout = descriptor_set_layout,
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.heightmap_sampler = try vk.Sampler.init(device),
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.heightmap = undefined,
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};
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}
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pub fn setHeightmap(self: *Self, device: anytype, heightmap: Texture) !void {
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var set_layouts = [_]c.VkDescriptorSetLayout{self.texture_set_layout};
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const descriptor_allocate_info = c.VkDescriptorSetAllocateInfo{
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.sType = c.VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
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.descriptorPool = self.descriptor_pool,
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.descriptorSetCount = 1,
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.pSetLayouts = set_layouts[0..].ptr,
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};
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var descriptor_set: c.VkDescriptorSet = undefined;
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try vk.mapError(c.vkAllocateDescriptorSets(device.handle, &descriptor_allocate_info, &descriptor_set));
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const texture_info: c.VkDescriptorImageInfo = .{
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.imageLayout = c.VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
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.imageView = heightmap.image_view,
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.sampler = self.heightmap_sampler.handle,
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};
|
||||
|
||||
const write_texture_descriptor_set = c.VkWriteDescriptorSet{
|
||||
.sType = c.VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
|
||||
.dstSet = descriptor_set,
|
||||
.dstBinding = 0,
|
||||
.dstArrayElement = 0,
|
||||
.descriptorCount = 1,
|
||||
.descriptorType = c.VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
||||
.pImageInfo = &texture_info,
|
||||
};
|
||||
|
||||
c.vkUpdateDescriptorSets(device.handle, 1, &write_texture_descriptor_set, 0, null);
|
||||
|
||||
self.heightmap = descriptor_set;
|
||||
}
|
||||
|
||||
pub fn bind(self: Self, device: vk.Device, frame: usize) void {
|
||||
std.debug.assert(frame < 2);
|
||||
c.vkCmdBindPipeline(device.command_buffers[frame], c.VK_PIPELINE_BIND_POINT_GRAPHICS, self.handle);
|
||||
}
|
||||
|
||||
pub fn deinit(self: Self, device: vk.Device) void {
|
||||
self.textures.deinit();
|
||||
self.diffuse_sampler.deinit(device);
|
||||
self.specular_sampler.deinit(device);
|
||||
self.projection_buffer.deinit(device.handle);
|
||||
c.vkDestroyDescriptorSetLayout(device.handle, self.descriptor_set_layout, null);
|
||||
c.vkDestroyDescriptorPool(device.handle, self.descriptor_pool, null);
|
||||
c.vkDestroyPipeline(device.handle, self.handle, null);
|
||||
c.vkDestroyPipelineLayout(device.handle, self.layout, null);
|
||||
}
|
||||
Loading…
Add table
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Reference in a new issue