pre vertex transfer buffer
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parent
017cfcf82f
commit
ff4302837e
5 changed files with 160 additions and 15 deletions
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@ -1,20 +1,11 @@
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#version 450
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vec2 positions[3] = vec2[](
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vec2(0.0, -0.5),
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vec2(0.5, 0.5),
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vec2(-0.5, 0.5)
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);
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vec3 colors[3] = vec3[](
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vec3(1.0, 0.0, 0.0),
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vec3(0.0, 1.0, 0.0),
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vec3(0.0, 0.0, 1.0)
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);
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layout(location = 0) in vec2 inPosition;
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layout(location = 1) in vec3 inColor;
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layout(location = 0) out vec3 fragColor;
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void main() {
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gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
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fragColor = colors[gl_VertexIndex];
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gl_Position = vec4(inPosition, 0.0, 1.0);
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fragColor = inColor;
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}
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BIN
shaders/vert.spv
BIN
shaders/vert.spv
Binary file not shown.
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@ -27,4 +27,7 @@ pub struct AppData {
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pub in_flight_fences: Vec<vk::Fence>,
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pub images_in_flight: Vec<vk::Fence>,
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pub vertex_buffer: vk::Buffer,
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pub vertex_buffer_memory: vk::DeviceMemory,
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}
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109
src/main.rs
109
src/main.rs
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@ -27,10 +27,16 @@ use vulkanalia::vk::ExtDebugUtilsExtension;
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use vulkanalia::vk::KhrSurfaceExtension;
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use vulkanalia::vk::KhrSwapchainExtension;
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use cgmath::{vec2, vec3};
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use std::mem::size_of;
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use std::ptr::copy_nonoverlapping as memcpy;
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pub mod app_data;
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pub mod errors;
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pub mod swapchain;
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pub mod queue_family_indices;
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pub mod vertex;
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const PORTABILITY_MACOS_VERSION: Version = Version::new(1, 3, 216);
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const VALIDATION_ENABLED: bool =
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@ -42,6 +48,12 @@ const DEVICE_EXTENSIONS: &[vk::ExtensionName] = &[vk::KHR_SWAPCHAIN_EXTENSION.na
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const MAX_FRAMES_IN_FLIGHT: usize = 2;
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static VERTICES: [vertex::Vertex; 3] = [
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vertex::Vertex::new(vec2(0.0, -0.5), vec3(1.0, 0.0, 0.0)),
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vertex::Vertex::new(vec2(0.5, 0.5), vec3(0.0, 1.0, 0.0)),
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vertex::Vertex::new(vec2(-0.5, 0.5), vec3(0.0, 0.0, 1.0)),
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];
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fn main() -> Result<()> {
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pretty_env_logger::init();
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@ -118,6 +130,8 @@ impl App {
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create_command_pool(&instance, &device, &mut data)?;
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create_vertex_buffer(&instance, &device, &mut data)?;
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create_command_buffers(&device, &mut data)?;
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create_sync_objects(&device, &mut data)?;
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@ -191,6 +205,9 @@ impl App {
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unsafe fn destroy(&mut self) {
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self.destroy_swapchain();
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self.device.destroy_buffer(self.data.vertex_buffer, None);
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self.device.free_memory(self.data.vertex_buffer_memory, None);
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self.data.in_flight_fences
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.iter()
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.for_each(|f| self.device.destroy_fence(*f, None));
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@ -477,7 +494,11 @@ unsafe fn create_pipeline(device: &Device, data: &mut app_data::AppData) -> Resu
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.module(frag_shader_module)
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.name(b"main\0");
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let vertex_input_state = vk::PipelineVertexInputStateCreateInfo::builder();
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let binding_descriptions = &[vertex::Vertex::binding_description()];
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let attribute_descriptions = vertex::Vertex::attribute_descriptions();
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let vertex_input_state = vk::PipelineVertexInputStateCreateInfo::builder()
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.vertex_binding_descriptions(binding_descriptions)
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.vertex_attribute_descriptions(&attribute_descriptions);
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let input_assembly_state = vk::PipelineInputAssemblyStateCreateInfo::builder()
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.topology(vk::PrimitiveTopology::TRIANGLE_LIST)
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@ -690,7 +711,8 @@ unsafe fn create_command_buffers(device: &Device, data: &mut app_data::AppData)
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device.cmd_bind_pipeline(
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*command_buffer, vk::PipelineBindPoint::GRAPHICS, data.pipeline);
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device.cmd_draw(*command_buffer, 3, 1, 0, 0);
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device.cmd_bind_vertex_buffers(*command_buffer, 0, &[data.vertex_buffer], &[0]);
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device.cmd_draw(*command_buffer, VERTICES.len() as u32, 1, 0, 0);
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device.cmd_end_render_pass(*command_buffer);
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@ -721,3 +743,86 @@ unsafe fn create_sync_objects(device: &Device, data: &mut app_data::AppData) ->
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Ok(())
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}
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unsafe fn create_buffer(
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instance: &Instance,
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device: &Device,
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data: &app_data::AppData,
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size: vk::DeviceSize,
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usage: vk::BufferUsageFlags,
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properties: vk::MemoryPropertyFlags,
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) -> Result<(vk::Buffer, vk::DeviceMemory)> {
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let buffer_info = vk::BufferCreateInfo::builder()
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.size(size)
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.usage(usage)
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.sharing_mode(vk::SharingMode::EXCLUSIVE);
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let buffer = device.create_buffer(&buffer_info, None)?;
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let requirements = device.get_buffer_memory_requirements(buffer);
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let memory_info = vk::MemoryAllocateInfo::builder()
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.allocation_size(requirements.size)
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.memory_type_index(get_memory_type_index(
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instance,
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data,
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properties,
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requirements,
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)?);
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let buffer_memory = device.allocate_memory(&memory_info, None)?;
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device.bind_buffer_memory(buffer, buffer_memory, 0)?;
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Ok((buffer, buffer_memory))
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}
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unsafe fn create_vertex_buffer(
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instance: &Instance,
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device: &Device,
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data: &mut app_data::AppData,
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) -> Result<()> {
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let size = (size_of::<vertex::Vertex>() * VERTICES.len()) as u64;
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let (vertex_buffer, vertex_buffer_memory) = create_buffer(
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instance,
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device,
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data,
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size,
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vk::BufferUsageFlags::VERTEX_BUFFER,
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vk::MemoryPropertyFlags::HOST_COHERENT | vk::MemoryPropertyFlags::HOST_VISIBLE,
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)?;
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data.vertex_buffer = vertex_buffer;
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data.vertex_buffer_memory = vertex_buffer_memory;
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let memory = device.map_memory(
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vertex_buffer_memory,
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0,
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size,
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vk::MemoryMapFlags::empty(),
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)?;
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memcpy(VERTICES.as_ptr(), memory.cast(), VERTICES.len());
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device.unmap_memory(vertex_buffer_memory);
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Ok(())
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}
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unsafe fn get_memory_type_index(
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instance: &Instance,
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data: &app_data::AppData,
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properties: vk::MemoryPropertyFlags,
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requirements: vk::MemoryRequirements,
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) -> Result<u32> {
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let memory = instance.get_physical_device_memory_properties(data.physical_device);
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(0..memory.memory_type_count)
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.find(|i| {
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let suitable = (requirements.memory_type_bits & (1 << i)) != 0;
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let memory_type = memory.memory_types[*i as usize];
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suitable && memory_type.property_flags.contains(properties)
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})
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.ok_or_else(|| anyhow!("Failed to find suitable memory type."))
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}
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46
src/vertex.rs
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46
src/vertex.rs
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@ -0,0 +1,46 @@
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use vulkanalia::prelude::v1_0::*;
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use std::mem::size_of;
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use cgmath;
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type Vec2 = cgmath::Vector2<f32>;
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type Vec3 = cgmath::Vector3<f32>;
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#[repr(C)]
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#[derive(Copy, Clone, Debug)]
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pub struct Vertex {
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pub pos: Vec2,
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pub color: Vec3,
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}
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impl Vertex {
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pub const fn new(pos: Vec2, color: Vec3) -> Self {
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Self { pos, color }
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}
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pub fn binding_description() -> vk::VertexInputBindingDescription {
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vk::VertexInputBindingDescription::builder()
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.binding(0)
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.stride(size_of::<Vertex>() as u32)
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.input_rate(vk::VertexInputRate::VERTEX)
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.build()
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}
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pub fn attribute_descriptions() -> [vk::VertexInputAttributeDescription; 2] {
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let pos = vk::VertexInputAttributeDescription::builder()
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.binding(0)
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.location(0)
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.format(vk::Format::R32G32_SFLOAT)
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.offset(0)
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.build();
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let color = vk::VertexInputAttributeDescription::builder()
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.binding(0)
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.location(1)
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.format(vk::Format::R32G32B32_SFLOAT)
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.offset(size_of::<Vec2>() as u32)
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.build();
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[pos, color]
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}
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}
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