had a bit of a time finding the problem with the specialization constants being unimplemented. Adding an impl lets rust elicit the pipeline type so I can store it, thank god

src/main.rs

@@ -43,6 +43,8 @@ use vulkano::sync::GpuFuture;
 use shaderc::CompileOptions;
 use shade_runner::CompileError;
 use crate::workpiece::{WorkpieceLoader, Workpiece};
+use winit::{EventsLoop, WindowBuilder};
+use vulkano_win::VkSurfaceBuild;
 
 mod slider;
 mod timer;
@@ -82,16 +84,37 @@ Let's take a look at how easy it would be to replace SFML...
 
 fn main() {
 
-    let font = Font::from_file("resources/fonts/sansation.ttf").unwrap();
+    let instance = {
+        let extensions = vulkano_win::required_extensions();
+        Instance::new(None, &extensions, None).unwrap()
+    };
+
+    let mut events_loop = EventsLoop::new();
+    let mut surface = WindowBuilder::new()
+        .build_vk_surface(&events_loop, instance.clone()).unwrap();
+    let mut window = surface.window();
+
+
+    let mut processor = vkprocessor::VkProcessor::new(&instance, &surface);
 
-    let instance = Instance::new(None, &InstanceExtensions::none(), None).unwrap();
-    let mut processor = vkprocessor::VkProcessor::new(&instance);
     processor.compile_kernel(String::from("simple-edge.compute"));
     processor.load_buffers(String::from("funky-bird.jpg"));
     processor.run_kernel();
     processor.read_image();
     processor.save_image();
 
+
+
+
+
+
+
+
+
+    let font = Font::from_file("resources/fonts/sansation.ttf").unwrap();
+
+
+
     let mut window = RenderWindow::new(
         (900, 900),
         "Custom drawable",

src/vkprocessor.rs

@@ -3,7 +3,7 @@ use vulkano::command_buffer::AutoCommandBufferBuilder;
 use vulkano::descriptor::descriptor_set::{PersistentDescriptorSet, StdDescriptorPoolAlloc};
 use vulkano::device::{Device, DeviceExtensions, QueuesIter, Queue};
 use vulkano::instance::{Instance, InstanceExtensions, PhysicalDevice, QueueFamily};
-use vulkano::pipeline::{ComputePipeline, GraphicsPipeline};
+use vulkano::pipeline::{ComputePipeline, GraphicsPipeline, GraphicsPipelineAbstract};
 use vulkano::sync::GpuFuture;
 use vulkano::sync;
 use std::time::SystemTime;
@@ -15,17 +15,56 @@ use image::{DynamicImage, ImageBuffer};
 use image::GenericImageView;
 use vulkano::descriptor::pipeline_layout::PipelineLayout;
 use image::GenericImage;
-use shade_runner::{ComputeLayout, CompileError, FragLayout};
+use shade_runner::{ComputeLayout, CompileError, FragLayout, FragInput, FragOutput, VertInput, VertOutput, VertLayout};
 use vulkano::descriptor::descriptor_set::PersistentDescriptorSetBuf;
 use shaderc::CompileOptions;
-use vulkano::framebuffer::Subpass;
+use vulkano::framebuffer::{Subpass, RenderPass};
-use vulkano::pipeline::shader::GraphicsShaderType;
+use vulkano::pipeline::shader::{GraphicsShaderType, ShaderModule, GraphicsEntryPoint, SpecializationConstants, SpecializationMapEntry};
+use vulkano::swapchain::{Swapchain, PresentMode, SurfaceTransform, Surface};
+use vulkano::image::swapchain::SwapchainImage;
+use winit::{EventsLoop, WindowBuilder, Window};
+use vulkano_win::VkSurfaceBuild;
+use vulkano::pipeline::vertex::{SingleBufferDefinition, Vertex};
+use vulkano::descriptor::PipelineLayoutAbstract;
+use std::alloc::Layout;
+
+#[repr(C)]
+struct MySpecConstants {
+    my_integer_constant: i32,
+    a_boolean: u32,
+    floating_point: f32,
+}
+
+unsafe impl SpecializationConstants for MySpecConstants {
+    fn descriptors() -> &'static [SpecializationMapEntry] {
+        static DESCRIPTORS: [SpecializationMapEntry; 3] = [
+            SpecializationMapEntry {
+                constant_id: 0,
+                offset: 0,
+                size: 4,
+            },
+            SpecializationMapEntry {
+                constant_id: 1,
+                offset: 4,
+                size: 4,
+            },
+            SpecializationMapEntry {
+                constant_id: 2,
+                offset: 8,
+                size: 4,
+            },
+        ];
+
+        &DESCRIPTORS
+    }
+}
+
 
 pub struct VkProcessor<'a> {
     pub instance: Arc<Instance>,
     pub physical: PhysicalDevice<'a>,
-    pub pipeline:         Option<Arc<ComputePipeline<PipelineLayout<shade_runner::layouts::ComputeLayout>>>>,
+    pub pipeline:         Option<Arc<GraphicsPipelineAbstract + Sync + Send>>,
-    pub compute_pipeline: (),
+    pub compute_pipeline: Option<std::sync::Arc<ComputePipeline<PipelineLayout<shade_runner::layouts::ComputeLayout>>>>,
     pub device: Arc<Device>,
     pub queues: QueuesIter,
     pub queue: Arc<Queue>,
@@ -33,19 +72,33 @@ pub struct VkProcessor<'a> {
     pub image_buffer: Vec<u8>,
     pub img_buffers: Vec<Arc<CpuAccessibleBuffer<[u8]>>>,
     pub settings_buffer: Option<Arc<CpuAccessibleBuffer<[u32]>>>,
+    pub swapchain: Option<Arc<Swapchain<Window>>>,
+    pub images: Option<Vec<Arc<SwapchainImage<Window>>>>,
     pub xy: (u32, u32),
 }
 
 impl<'a> VkProcessor<'a> {
-    pub fn new(instance : &'a Arc<Instance>) -> VkProcessor<'a> {
+    pub fn new(instance : &'a Arc<Instance>, surface : &'a Arc<Surface<Window>>) -> VkProcessor<'a> {
+
 
         let physical = PhysicalDevice::enumerate(instance).next().unwrap();
-        let queue_family = physical.queue_families().find(|&q| q.supports_compute()).unwrap();
+
+        let queue_family = physical.queue_families().find(|&q| {
+            // We take the first queue that supports drawing to our window.
+            q.supports_graphics() &&
+                surface.is_supported(q).unwrap_or(false) &&
+                q.supports_compute()
+        }).unwrap();
+
+        let device_ext = DeviceExtensions { khr_swapchain: true, ..DeviceExtensions::none() };
+
         let (device, mut queues) = Device::new(physical,
                                                physical.supported_features(),
-                                               &DeviceExtensions::none(),
+                                               &device_ext,
                                                [(queue_family, 0.5)].iter().cloned()).unwrap();
 
+        let queue = queues.next().unwrap();
+
         VkProcessor {
             instance: instance.clone(),
             physical: physical.clone(),
@@ -58,6 +111,8 @@ impl<'a> VkProcessor<'a> {
             image_buffer: Vec::new(),
             img_buffers: Vec::new(),
             settings_buffer: Option::None,
+            swapchain: Option::None,
+            images: Option::None,
             xy: (0,0),
         }
 
@@ -104,7 +159,52 @@ impl<'a> VkProcessor<'a> {
         self.compute_pipeline = Some(compute_pipeline);
     }
 
-    pub fn compile_shaders(&mut self, filename: String) {
+    pub fn compile_shaders(&mut self, filename: String, surface : &'a Arc<Surface<Window>>) {
+
+        // Before we can draw on the surface, we have to create what is called a swapchain. Creating
+        // a swapchain allocates the color buffers that will contain the image that will ultimately
+        // be visible on the screen. These images are returned alongside with the swapchain.
+        let (mut swapchain, images) = {
+            // Querying the capabilities of the surface. When we create the swapchain we can only
+            // pass values that are allowed by the capabilities.
+            let capabilities = surface.capabilities(self.physical).unwrap();
+
+            let usage = capabilities.supported_usage_flags;
+
+            // The alpha mode indicates how the alpha value of the final image will behave. For example
+            // you can choose whether the window will be opaque or transparent.
+            let alpha = capabilities.supported_composite_alpha.iter().next().unwrap();
+
+            // Choosing the internal format that the images will have.
+            let format = capabilities.supported_formats[0].0;
+
+            // The dimensions of the window, only used to initially setup the swapchain.
+            // NOTE:
+            // On some drivers the swapchain dimensions are specified by `caps.current_extent` and the
+            // swapchain size must use these dimensions.
+            // These dimensions are always the same as the window dimensions
+            //
+            // However other drivers dont specify a value i.e. `caps.current_extent` is `None`
+            // These drivers will allow anything but the only sensible value is the window dimensions.
+            //
+            // Because for both of these cases, the swapchain needs to be the window dimensions, we just use that.
+            let initial_dimensions = if let Some(dimensions) = surface.window().get_inner_size() {
+                // convert to physical pixels
+                let dimensions: (u32, u32) = dimensions.to_physical(surface.window().get_hidpi_factor()).into();
+                [dimensions.0, dimensions.1]
+            } else {
+                // The window no longer exists so exit the application.
+                return;
+            };
+
+            // Please take a look at the docs for the meaning of the parameters we didn't mention.
+            Swapchain::new(self.device.clone(), surface.clone(), capabilities.min_image_count, format,
+                           initial_dimensions, 1, usage, &self.queue, SurfaceTransform::Identity, alpha,
+                           PresentMode::Fifo, true, None).unwrap()
+        };
+
+        self.swapchain = Some(swapchain);
+        self.images = Some(images);
 
         let project_root =
             std::env::current_dir()
@@ -113,15 +213,15 @@ impl<'a> VkProcessor<'a> {
         let mut shader_path = project_root.clone();
         shader_path.push(PathBuf::from("resources/shaders/"));
 
-        let mut vertex_shader_path = project_root.clone()
+        let mut vertex_shader_path = project_root.clone();
-            .push(PathBuf::from("resources/shaders/"));
+        vertex_shader_path.push(PathBuf::from("resources/shaders/"));
         vertex_shader_path.push(PathBuf::from(filename.clone()));
         vertex_shader_path.push(PathBuf::from(".vertex"));
 
-        let mut fragment_shader_path = project_root.clone()
+        let mut fragment_shader_path = project_root.clone();
-            .push(PathBuf::from("resources/shaders/"));
+        fragment_shader_path.push(PathBuf::from("resources/shaders/"));
-        vertex_shader_path.push(PathBuf::from(filename.clone()));
+        fragment_shader_path.push(PathBuf::from(filename.clone()));
-        vertex_shader_path.push(PathBuf::from(".fragment"));
+        fragment_shader_path.push(PathBuf::from(".fragment"));
 
         let mut options = CompileOptions::new().ok_or(CompileError::CreateCompiler).unwrap();
         options.add_macro_definition("SETTING_POS_X", Some("0"));
@@ -137,68 +237,127 @@ impl<'a> VkProcessor<'a> {
             sr::parse(&shader)
                 .expect("failed to parse");
 
-        let x = unsafe {
+        let x1 : Arc<ShaderModule> = unsafe {
             vulkano::pipeline::shader::ShaderModule::from_words(self.device.clone(), &shader.fragment)
         }.unwrap();
 
+        let x2 = unsafe {
+            vulkano::pipeline::shader::ShaderModule::from_words(self.device.clone(), &shader.vertex)
+        }.unwrap();
 
-        let frag_entry_point = unsafe {
+        let frag_entry_point : GraphicsEntryPoint<MySpecConstants, FragInput, FragOutput, FragLayout> = unsafe {
-            &x.graphics_entry_point(CStr::from_bytes_with_nul_unchecked(b"main\0"),
+            x1.graphics_entry_point(CStr::from_bytes_with_nul_unchecked(b"main\0"),
                                     vulkano_entry.frag_input,
                                     vulkano_entry.frag_output,
-                                    vulkano_entry.frag_layout, GraphicsShaderType::Fragment)
+                                    vulkano_entry.frag_layout,
+                                   GraphicsShaderType::Fragment)
         };
 
-        let vert_entry_point = unsafe {
+        let vert_entry_point: GraphicsEntryPoint<MySpecConstants, VertInput, VertOutput, VertLayout>  = unsafe {
-            &x.graphics_entry_point(CStr::from_bytes_with_nul_unchecked(b"main\0"),
+            x2.graphics_entry_point(CStr::from_bytes_with_nul_unchecked(b"main\0"),
-                                    vulkano_entry.frag_input,
+                                    vulkano_entry.vert_input,
-                                    vulkano_entry.frag_output,
+                                    vulkano_entry.vert_output,
-                                    vulkano_entry.frag_layout, GraphicsShaderType::Fragment)
+                                    vulkano_entry.vert_layout,
+                                   GraphicsShaderType::Vertex)
         };
 
+        // The next step is to create a *render pass*, which is an object that describes where the
+        // output of the graphics pipeline will go. It describes the layout of the images
+        // where the colors, depth and/or stencil information will be written.
+        let render_pass = Arc::new(vulkano::single_pass_renderpass!(
+            self.device.clone(),
+            attachments: {
+                // `color` is a custom name we give to the first and only attachment.
+                color: {
+                    // `load: Clear` means that we ask the GPU to clear the content of this
+                    // attachment at the start of the drawing.
+                    load: Clear,
+                    // `store: Store` means that we ask the GPU to store the output of the draw
+                    // in the actual image. We could also ask it to discard the result.
+                    store: Store,
+                    // `format: <ty>` indicates the type of the format of the image. This has to
+                    // be one of the types of the `vulkano::format` module (or alternatively one
+                    // of your structs that implements the `FormatDesc` trait). Here we use the
+                    // same format as the swapchain.
+                    format: self.swapchain.clone().unwrap().clone().format(),
+                    // TODO:
+                    samples: 1,
+                }
+            },
+            pass: {
+                // We use the attachment named `color` as the one and only color attachment.
+                color: [color],
+                // No depth-stencil attachment is indicated with empty brackets.
+                depth_stencil: {}
+            }
+        ).unwrap());
+
 
 //      Before we draw we have to create what is called a pipeline. This is similar to an OpenGL
 //      program, but much more specific.
-        self.pipeline = Option::Some(Arc::new(GraphicsPipeline::start()
+        let pipeline = GraphicsPipeline::start()
             // We need to indicate the layout of the vertices.
             // The type `SingleBufferDefinition` actually contains a template parameter corresponding
             // to the type of each vertex. But in this code it is automatically inferred.
-            .vertex_input_single_buffer()
+//            .vertex_input_single_buffer()
             // A Vulkan shader can in theory contain multiple entry points, so we have to specify
             // which one. The `main` word of `main_entry_point` actually corresponds to the name of
             // the entry point.
-            .vertex_shader(vert_entry_point, ())
+            .vertex_shader(vert_entry_point, MySpecConstants {
+                my_integer_constant: 0,
+                a_boolean: 0,
+                floating_point: 0.0
+            })
             // The content of the vertex buffer describes a list of triangles.
             .triangle_list()
             // Use a resizable viewport set to draw over the entire window
             .viewports_dynamic_scissors_irrelevant(1)
             // See `vertex_shader`.
-            .fragment_shader(frag_entry_point, ())
+            .fragment_shader(frag_entry_point, MySpecConstants {
+                my_integer_constant: 0,
+                a_boolean: 0,
+                floating_point: 0.0
+            })
             // We have to indicate which subpass of which render pass this pipeline is going to be used
             // in. The pipeline will only be usable from this particular subpass.
             .render_pass(Subpass::from(render_pass.clone(), 0).unwrap())
             // Now that our builder is filled, we call `build()` to obtain an actual pipeline.
-            .build(device.clone())
+            .build(self.device.clone())
-            .unwrap()));
+            .unwrap();
 
 
-
+        self.pipeline = Option::Some(Arc::new(pipeline));
-
-
-        let x = unsafe {
-            vulkano::pipeline::shader::ShaderModule::from_words(self.device.clone(), &shader.fragment)
-        }.unwrap();
-
-        let pipeline = Arc::new({
-            unsafe {
-                ComputePipeline::new(self.device.clone(), &x.compute_entry_point(
-                    CStr::from_bytes_with_nul_unchecked(b"main\0"),
-                    vulkano_entry.compute_layout), &(),
-                ).unwrap()
     }
-        });
 
-        self.pipeline = Some(pipeline);
+    pub fn create_renderpass(&mut self) {
+
+        let render_pass = Arc::new(vulkano::single_pass_renderpass!(
+            self.device.clone(),
+            attachments: {
+                // `color` is a custom name we give to the first and only attachment.
+                color: {
+                    // `load: Clear` means that we ask the GPU to clear the content of this
+                    // attachment at the start of the drawing.
+                    load: Clear,
+                    // `store: Store` means that we ask the GPU to store the output of the draw
+                    // in the actual image. We could also ask it to discard the result.
+                    store: Store,
+                    // `format: <ty>` indicates the type of the format of the image. This has to
+                    // be one of the types of the `vulkano::format` module (or alternatively one
+                    // of your structs that implements the `FormatDesc` trait). Here we use the
+                    // same format as the swapchain.
+                    format: self.swapchain.clone().unwrap().clone().format(),
+                    // TODO:
+                    samples: 1,
+                }
+            },
+            pass: {
+                // We use the attachment named `color` as the one and only color attachment.
+                color: [color],
+                // No depth-stencil attachment is indicated with empty brackets.
+                depth_stencil: {}
+            }
+        ).unwrap());
     }
 
     pub fn load_buffers(&mut self, image_filename: String)
@@ -268,7 +427,7 @@ impl<'a> VkProcessor<'a> {
 
         // Create the data descriptor set for our previously created shader pipeline
         let mut set =
-            PersistentDescriptorSet::start(self.pipeline.clone().unwrap().clone(), 0)
+            PersistentDescriptorSet::start(self.compute_pipeline.clone().unwrap().clone(), 0)
             .add_buffer(write_buffer.clone()).unwrap()
             .add_buffer(read_buffer.clone()).unwrap()
             .add_buffer(settings_buffer.clone()).unwrap();
@@ -280,37 +439,6 @@ impl<'a> VkProcessor<'a> {
         self.settings_buffer = Some(settings_buffer);
     }
 
-    pub fn create_renderpass(&mut self) {
-
-        let render_pass = Arc::new(vulkano::single_pass_renderpass!(
-            self.device.clone(),
-            attachments: {
-                // `color` is a custom name we give to the first and only attachment.
-                color: {
-                    // `load: Clear` means that we ask the GPU to clear the content of this
-                    // attachment at the start of the drawing.
-                    load: Clear,
-                    // `store: Store` means that we ask the GPU to store the output of the draw
-                    // in the actual image. We could also ask it to discard the result.
-                    store: Store,
-                    // `format: <ty>` indicates the type of the format of the image. This has to
-                    // be one of the types of the `vulkano::format` module (or alternatively one
-                    // of your structs that implements the `FormatDesc` trait). Here we use the
-                    // same format as the swapchain.
-                    format: swapchain.format(),
-                    // TODO:
-                    samples: 1,
-                }
-            },
-            pass: {
-                // We use the attachment named `color` as the one and only color attachment.
-                color: [color],
-                // No depth-stencil attachment is indicated with empty brackets.
-                depth_stencil: {}
-            }
-        ).unwrap());
-    }
-
     pub fn run_kernel(&mut self) {
 
         println!("Running Kernel...");
@@ -319,7 +447,7 @@ impl<'a> VkProcessor<'a> {
         let command_buffer =
             AutoCommandBufferBuilder::primary_one_time_submit(self.device.clone(),self.queue.family()).unwrap()
             .dispatch([self.xy.0, self.xy.1, 1],
-                      self.pipeline.clone().unwrap().clone(),
+                      self.compute_pipeline.clone().unwrap().clone(),
                       self.set.clone().unwrap().clone(), ()).unwrap()
             .build().unwrap();