WIP "Graphics pipeline basics: Fixed functions"
TODO: "Graphics pipeline basics: Render passes" https://vulkan-tutorial.com/Drawing_a_triangle/Graphics_pipeline_basics/Render_passes
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1 changed files with 185 additions and 0 deletions
185
src/main.rs
185
src/main.rs
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@ -14,6 +14,11 @@ const ENABLE_VALIDATION_LAYERS: bool = false;
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const VALIDATION_LAYER_STR_0: &str = "VK_LAYER_KHRONOS_validation\x00";
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const VALIDATION_LAYERS: [*const u8; 1] = [VALIDATION_LAYER_STR_0.as_ptr()];
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const DYNAMIC_STATES: [ffi::VkDynamicState; 2] = [
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ffi::VkDynamicState_VK_DYNAMIC_STATE_VIEWPORT,
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ffi::VkDynamicState_VK_DYNAMIC_STATE_SCISSOR,
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];
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const DEVICE_EXTENSIONS: [*const i8; 1] =
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[ffi::VK_KHR_SWAPCHAIN_EXTENSION_NAME as *const u8 as *const i8];
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@ -166,6 +171,7 @@ struct VulkanApp {
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swap_chain_image_format: ffi::VkFormat,
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swap_chain_extent: ffi::VkExtent2D,
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swap_chain_image_views: Vec<ffi::VkImageView>,
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pipeline_layout: ffi::VkPipelineLayout,
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}
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impl VulkanApp {
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@ -184,6 +190,7 @@ impl VulkanApp {
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swap_chain_image_format: 0,
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swap_chain_extent: unsafe { std::mem::zeroed() },
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swap_chain_image_views: Vec::new(),
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pipeline_layout: std::ptr::null_mut(),
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}
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}
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@ -851,6 +858,59 @@ impl VulkanApp {
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frag_shader_stage_info.module = frag_shader_module.get_module();
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frag_shader_stage_info.pName = "main\x00".as_ptr() as *const i8;
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let shader_stages: [ffi::VkPipelineShaderStageCreateInfo; 2] =
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[vert_shader_stage_info, frag_shader_stage_info];
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let vertex_input_info = Self::create_vertex_input_state_info_struct();
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let mut input_assembly: ffi::VkPipelineInputAssemblyStateCreateInfo =
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unsafe { std::mem::zeroed() };
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input_assembly.sType =
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ffi::VkStructureType_VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
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input_assembly.topology = ffi::VkPrimitiveTopology_VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
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input_assembly.primitiveRestartEnable = ffi::VK_FALSE;
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let viewport = self.create_viewport();
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let mut scissor: ffi::VkRect2D = unsafe { std::mem::zeroed() };
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scissor.offset.x = 0;
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scissor.offset.y = 0;
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scissor.extent = self.swap_chain_extent;
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let dynamic_state_info_struct = Self::create_dynamic_state_info_struct();
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let viewport_state = Self::create_viewport_state_info_struct();
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let rasterizer_info = Self::create_rasterizer_info_struct();
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let multisampling_info = Self::create_multisampling_info_struct();
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let color_blend_attachment = Self::create_color_blend_attach_state_struct();
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let color_blend_info_struct =
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Self::create_color_blend_state_info_struct(std::ptr::addr_of!(color_blend_attachment));
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let mut pipeline_layout_info: ffi::VkPipelineLayoutCreateInfo =
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unsafe { std::mem::zeroed() };
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pipeline_layout_info.sType =
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ffi::VkStructureType_VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
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pipeline_layout_info.setLayoutCount = 0;
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pipeline_layout_info.pSetLayouts = std::ptr::null();
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pipeline_layout_info.pushConstantRangeCount = 0;
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pipeline_layout_info.pPushConstantRanges = std::ptr::null();
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let result = unsafe {
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ffi::vkCreatePipelineLayout(
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self.device,
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std::ptr::addr_of!(pipeline_layout_info),
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std::ptr::null(),
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std::ptr::addr_of_mut!(self.pipeline_layout),
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)
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};
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if result != ffi::VkResult_VK_SUCCESS {
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panic!("Failed to create pipeline layout!");
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}
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// TODO: Use the *_shader_stage_info structs before vert/frag_shader_module is cleaned up.
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Ok(())
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}
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@ -908,10 +968,135 @@ impl VulkanApp {
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})
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}
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}
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fn create_dynamic_state_info_struct() -> ffi::VkPipelineDynamicStateCreateInfo {
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let mut dynamic_state: ffi::VkPipelineDynamicStateCreateInfo =
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unsafe { std::mem::zeroed() };
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dynamic_state.sType =
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ffi::VkStructureType_VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
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dynamic_state.dynamicStateCount = DYNAMIC_STATES.len() as u32;
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dynamic_state.pDynamicStates = DYNAMIC_STATES.as_ptr();
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dynamic_state
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}
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fn create_vertex_input_state_info_struct() -> ffi::VkPipelineVertexInputStateCreateInfo {
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let mut vertex_input_info: ffi::VkPipelineVertexInputStateCreateInfo =
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unsafe { std::mem::zeroed() };
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vertex_input_info.sType =
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ffi::VkStructureType_VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
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vertex_input_info.vertexBindingDescriptionCount = 0;
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vertex_input_info.pVertexBindingDescriptions = std::ptr::null();
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vertex_input_info.vertexAttributeDescriptionCount = 0;
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vertex_input_info.pVertexBindingDescriptions = std::ptr::null();
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vertex_input_info
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}
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fn create_viewport(&mut self) -> ffi::VkViewport {
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let mut viewport: ffi::VkViewport = unsafe { std::mem::zeroed() };
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viewport.x = 0.0;
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viewport.y = 0.0;
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viewport.width = self.swap_chain_extent.width as f32;
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viewport.height = self.swap_chain_extent.height as f32;
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viewport.minDepth = 0.0;
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viewport.maxDepth = 1.0;
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viewport
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}
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fn create_viewport_state_info_struct() -> ffi::VkPipelineViewportStateCreateInfo {
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let mut viewport_state: ffi::VkPipelineViewportStateCreateInfo =
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unsafe { std::mem::zeroed() };
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viewport_state.sType =
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ffi::VkStructureType_VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
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viewport_state.viewportCount = 1;
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viewport_state.scissorCount = 1;
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viewport_state
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}
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fn create_rasterizer_info_struct() -> ffi::VkPipelineRasterizationStateCreateInfo {
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let mut rasterizer_info: ffi::VkPipelineRasterizationStateCreateInfo =
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unsafe { std::mem::zeroed() };
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rasterizer_info.sType =
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ffi::VkStructureType_VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
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rasterizer_info.depthClampEnable = ffi::VK_FALSE;
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rasterizer_info.rasterizerDiscardEnable = ffi::VK_FALSE;
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rasterizer_info.polygonMode = ffi::VkPolygonMode_VK_POLYGON_MODE_FILL;
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rasterizer_info.lineWidth = 1.0;
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rasterizer_info.cullMode = ffi::VkCullModeFlagBits_VK_CULL_MODE_BACK_BIT;
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rasterizer_info.frontFace = ffi::VkFrontFace_VK_FRONT_FACE_CLOCKWISE;
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rasterizer_info.depthBiasEnable = ffi::VK_FALSE;
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rasterizer_info.depthBiasConstantFactor = 0.0;
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rasterizer_info.depthBiasClamp = 0.0;
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rasterizer_info.depthBiasSlopeFactor = 0.0;
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rasterizer_info
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}
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fn create_multisampling_info_struct() -> ffi::VkPipelineMultisampleStateCreateInfo {
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let mut multisampling_info: ffi::VkPipelineMultisampleStateCreateInfo =
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unsafe { std::mem::zeroed() };
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multisampling_info.sType =
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ffi::VkStructureType_VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
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multisampling_info.sampleShadingEnable = ffi::VK_FALSE;
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multisampling_info.rasterizationSamples = ffi::VkSampleCountFlagBits_VK_SAMPLE_COUNT_1_BIT;
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multisampling_info.minSampleShading = 1.0;
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multisampling_info.pSampleMask = std::ptr::null();
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multisampling_info.alphaToCoverageEnable = ffi::VK_FALSE;
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multisampling_info.alphaToOneEnable = ffi::VK_FALSE;
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multisampling_info
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}
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fn create_color_blend_attach_state_struct() -> ffi::VkPipelineColorBlendAttachmentState {
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let mut color_blend_attachment: ffi::VkPipelineColorBlendAttachmentState =
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unsafe { std::mem::zeroed() };
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color_blend_attachment.colorWriteMask =
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ffi::VkColorComponentFlagBits_VK_COLOR_COMPONENT_R_BIT
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| ffi::VkColorComponentFlagBits_VK_COLOR_COMPONENT_G_BIT
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| ffi::VkColorComponentFlagBits_VK_COLOR_COMPONENT_B_BIT
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| ffi::VkColorComponentFlagBits_VK_COLOR_COMPONENT_A_BIT;
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color_blend_attachment.blendEnable = ffi::VK_FALSE;
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color_blend_attachment.srcColorBlendFactor = ffi::VkBlendFactor_VK_BLEND_FACTOR_ONE;
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color_blend_attachment.dstColorBlendFactor = ffi::VkBlendFactor_VK_BLEND_FACTOR_ZERO;
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color_blend_attachment.colorBlendOp = ffi::VkBlendOp_VK_BLEND_OP_ADD;
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color_blend_attachment.srcAlphaBlendFactor = ffi::VkBlendFactor_VK_BLEND_FACTOR_ONE;
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color_blend_attachment.dstAlphaBlendFactor = ffi::VkBlendFactor_VK_BLEND_FACTOR_ZERO;
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color_blend_attachment.alphaBlendOp = ffi::VkBlendOp_VK_BLEND_OP_ADD;
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color_blend_attachment
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}
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fn create_color_blend_state_info_struct(
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color_blend_attach_ptr: *const ffi::VkPipelineColorBlendAttachmentState,
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) -> ffi::VkPipelineColorBlendStateCreateInfo {
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let mut color_blending: ffi::VkPipelineColorBlendStateCreateInfo =
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unsafe { std::mem::zeroed() };
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color_blending.sType =
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ffi::VkStructureType_VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
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color_blending.logicOpEnable = ffi::VK_FALSE;
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color_blending.logicOp = ffi::VkLogicOp_VK_LOGIC_OP_COPY;
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color_blending.attachmentCount = 1;
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color_blending.pAttachments = color_blend_attach_ptr;
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color_blending.blendConstants[0] = 0.0;
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color_blending.blendConstants[1] = 0.0;
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color_blending.blendConstants[2] = 0.0;
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color_blending.blendConstants[3] = 0.0;
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color_blending
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}
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}
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impl Drop for VulkanApp {
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fn drop(&mut self) {
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if !self.pipeline_layout.is_null() {
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unsafe {
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ffi::vkDestroyPipelineLayout(self.device, self.pipeline_layout, std::ptr::null());
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}
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}
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for view in &self.swap_chain_image_views {
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unsafe {
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ffi::vkDestroyImageView(self.device, *view, std::ptr::null());
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