Move shader vertices into a vertex buffer
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96447196a2
commit
71449ae29b
@ -1,20 +1,11 @@
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#version 450
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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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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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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.
59
src/app.rs
59
src/app.rs
@ -2,12 +2,15 @@ mod functions;
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use functions::{
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create_command_buffers, create_command_pool, create_framebuffers, create_instance,
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create_logical_device, create_pipeline, create_render_pass, create_swapchain,
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create_swapchain_image_views, create_sync_objects, pick_physical_device,
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create_swapchain_image_views, create_sync_objects, create_vertex_buffer, pick_physical_device,
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};
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use crate::VALIDATION_ENABLED;
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use ::anyhow::{anyhow, Result};
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use ::lazy_static::lazy_static;
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use ::log::*;
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use ::nalgebra_glm as glm;
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use ::std::mem::size_of;
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use ::thiserror::Error;
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use ::vulkanalia::loader::{LibloadingLoader, LIBRARY};
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use ::vulkanalia::prelude::v1_0::*;
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@ -63,6 +66,7 @@ impl App {
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create_pipeline(&device, &mut data)?;
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create_framebuffers(&device, &mut data)?;
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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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@ -82,6 +86,9 @@ impl App {
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/// Here be Dragons
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pub 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
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.free_memory(self.data.vertex_buffer_memory, None);
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self.data
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.in_flight_fences
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@ -248,6 +255,9 @@ pub struct AppData {
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framebuffers: Vec<vk::Framebuffer>,
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// Command Pool
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command_pool: vk::CommandPool,
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// Buffers
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vertex_buffer: vk::Buffer,
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vertex_buffer_memory: vk::DeviceMemory,
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// Command Buffers
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command_buffers: Vec<vk::CommandBuffer>,
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// Sync Objects
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@ -327,3 +337,50 @@ impl SwapchainSupport {
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})
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}
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}
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#[repr(C)]
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#[derive(Copy, Clone, Debug)]
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pub(crate) struct Vertex {
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pos: glm::Vec2,
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color: glm::Vec3,
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}
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impl Vertex {
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fn new(pos: glm::Vec2, color: glm::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::<glm::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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lazy_static! {
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pub(crate) static ref VERTICES: Vec<Vertex> = vec![
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Vertex::new(glm::vec2(0.0, -0.5), glm::vec3(1.0, 0.0, 0.0)),
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Vertex::new(glm::vec2(0.5, 0.5), glm::vec3(0.0, 1.0, 0.0)),
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Vertex::new(glm::vec2(-0.5, 0.5), glm::vec3(0.0, 0.0, 1.0)),
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];
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}
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@ -6,6 +6,7 @@ use ::log::*;
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use ::std::collections::HashSet;
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use ::std::ffi::CStr;
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use ::std::os::raw::c_void;
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use ::std::ptr::copy_nonoverlapping as memcpy;
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use ::vulkanalia::prelude::v1_0::*;
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use ::vulkanalia::window as vk_window;
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use ::winit::window::Window;
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@ -437,7 +438,11 @@ pub(super) unsafe fn create_pipeline(device: &Device, data: &mut AppData) -> Res
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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::binding_description()];
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let attribute_descriptions = 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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@ -618,6 +623,7 @@ pub(super) unsafe fn create_command_buffers(device: &Device, data: &mut AppData)
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vk::PipelineBindPoint::GRAPHICS,
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data.pipeline,
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);
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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, 3, 1, 0, 0);
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device.cmd_end_render_pass(*command_buffer);
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@ -649,3 +655,59 @@ pub(super) unsafe fn create_sync_objects(device: &Device, data: &mut AppData) ->
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Ok(())
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}
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pub(super) unsafe fn create_vertex_buffer(
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instance: &Instance,
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device: &Device,
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data: &mut AppData,
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) -> Result<()> {
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let buffer_info = vk::BufferCreateInfo::builder()
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.size((size_of::<Vertex>() * VERTICES.len()) as u64)
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.usage(vk::BufferUsageFlags::VERTEX_BUFFER)
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.sharing_mode(vk::SharingMode::EXCLUSIVE);
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data.vertex_buffer = device.create_buffer(&buffer_info, None)?;
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let requirements = device.get_buffer_memory_requirements(data.vertex_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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vk::MemoryPropertyFlags::HOST_COHERENT | vk::MemoryPropertyFlags::HOST_VISIBLE,
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requirements,
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)?);
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data.vertex_buffer_memory = device.allocate_memory(&memory_info, None)?;
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device.bind_buffer_memory(data.vertex_buffer, data.vertex_buffer_memory, 0)?;
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let memory = device.map_memory(
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data.vertex_buffer_memory,
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0,
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buffer_info.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(data.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: &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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