stencil buffer is added, but not working for invert

src/canvas.rs

@@ -118,7 +118,7 @@ impl CanvasState {
             }]);
 
         let dimensions = [dimensions.width(), dimensions.height()];
-        let depth_buffer = AttachmentImage::transient(self.device.clone(), dimensions, Format::D16Unorm).unwrap();
+        let depth_buffer = AttachmentImage::transient(self.device.clone(), dimensions, Format::D32Sfloat_S8Uint).unwrap();
 
         images.iter().map(|image| {
             Arc::new(
@@ -157,11 +157,11 @@ impl CanvasState {
                     format: format,
                     samples: 1,
                 },
-                // `color` is a custom name we give to the first and only attachment.
+
                 depth: {
                     load: Clear,
                     store: DontCare,
-                    format: Format::D16Unorm,
+                    format: Format::D32Sfloat_S8Uint,
                     samples: 1,
                 }
             },
@@ -486,7 +486,7 @@ impl CanvasState {
         // Specify the color to clear the framebuffer with i.e. blue
         let clear_values = vec!(
             ClearValue::Float([0.0, 0.0, 1.0, 1.0]),
-            1f32.into()
+            ClearValue::DepthStencil((1.0, 1)),
         );
 
         let mut command_buffer = command_buffer.begin_render_pass(

src/canvas_shader.rs

@@ -118,10 +118,10 @@ impl CanvasShader {
              depth_write: true,
              depth_bounds_test: DepthBounds::Disabled,
              stencil_front: Stencil {
-                 compare: Compare::Never,
+                 compare: Compare::Always,
                  pass_op: StencilOp::Invert,
-                 fail_op: StencilOp::Keep,
-                 depth_fail_op: StencilOp::Keep,
+                 fail_op: StencilOp::Invert,
+                 depth_fail_op: StencilOp::Invert,
                  compare_mask: Some(u32::max_value()),
                  write_mask: Some(u32::max_value()),
                  reference: Some(u32::max_value()),

src/main.rs

@@ -24,6 +24,7 @@ use crate::compu_kernel::CompuKernel;
 use crate::compu_buffer::CompuBuffers;
 use crate::util::load_raw;
 use crate::canvas_frame::CanvasFrame;
+use crate::sprite::Poly;
 
 
 pub mod util;
@@ -101,7 +102,9 @@ pub fn main() {
     let sfml_handle = processor.get_texture_handle(String::from("sfml.png")).unwrap();
 
     let funky_sprite = Sprite::new_with_texture((0.0, -0.5), (0.5, 0.5), 0, funky_handle.clone());
-    let sfml_sprite  = Sprite::new_with_texture((0.0, -0.5), (0.5, 0.5), 0, sfml_handle.clone());
+    let sfml_sprite  = Sprite::new_with_texture((0.0, -0.5), (0.5, 0.5), 1, sfml_handle.clone());
+
+    let test_polygon = Poly::new_with_color((-0.5, -0.5), (0.5, 0.5), 1, (1.0,0.0,0.0,0.0));
 
 
     drop(q2);
@@ -111,7 +114,6 @@ pub fn main() {
 
     let mut exit = false;
 
-
     let mut count = 0;
 
     while let Some(p) = window.get_position() {
@@ -172,6 +174,8 @@ pub fn main() {
         canvas.draw(&sfml_sprite);
         canvas.draw(&compu_sprite1);
 
+        canvas.draw(&test_polygon);
+
         {
             let g = hprof::enter("Run");
             processor.run(&surface,

src/sprite.rs

@@ -121,16 +121,97 @@ impl Drawable for Sprite {
     }
 }
 
-/*
 
-        let vertex_buffer = {
+#[derive(Debug, Clone)]
+pub struct Poly {
+
+    pub vertices: Vec<(f32, f32, f32)>,
+    pub ti_position: Vec<(f32, f32)>,
+
+    position: (f32, f32),
+    size: (f32, f32),
+    color: (f32, f32, f32, f32),
+
+    textured: bool,
+    texture_handle: Option<Arc<CanvasTextureHandle>>,
+
+}
+
+/// Container class which implements drawable.
+impl Poly {
+
+    pub fn new(position: (f32, f32), size: (f32, f32)) -> Poly {
+        Poly::new_with_color(position, size, 0, (0.,0.,0.,0.))
+    }
 
-            CpuAccessibleBuffer::from_iter(self.device.clone(), BufferUsage::all(), [
-                ColoredVertex2D { position: [ 1.0, 1.0 ], color },
-                ColoredVertex2D { position: [ 1.0, 0.5 ], color },
-                ColoredVertex2D { position: [ 0.5, 0.5 ], color },
-                ColoredVertex2D { position: [ 0.5, 1.0 ], color },
-            ].iter().cloned()).unwrap()
-        };
+    pub fn new_with_color(position: (f32, f32),
+                          size: (f32, f32),
+                          depth: u32,
+                          color: (f32, f32, f32, f32)) -> Poly {
+
+        let normalized_depth = (depth as f32 / 255.0);
+
+        Poly {
+            vertices: vec![
+                (position.0, position.1                  , normalized_depth),    // top left
+                (position.0, position.1 + size.1         , normalized_depth),    // bottom left
+                (position.0 + size.0, position.1 + size.1, normalized_depth),    // bottom right
+
+                (position.0, position.1                  , normalized_depth),    // top left
+                (position.0 + size.0, position.1 + size.1, normalized_depth),    // bottom right
+                (position.0 + size.0, position.1         , normalized_depth),    // top right
+
+                (position.0 - 0.1, position.1                  , normalized_depth),    // top left
+                (position.0 - 0.1 + size.0, position.1 + size.1, normalized_depth),    // bottom right
+                (position.0 - 0.1 + size.0, position.1         , normalized_depth),    // top right
+            ],
+
+            position: position,
+            ti_position: vec![
+                (-0.0, -0.0),          // top left
+                (-0.0,  1.0),          // bottom left
+                ( 1.0,  1.0),          // bottom right
+
+                (-0.0, -0.0),          // top left
+                ( 1.0,  1.0),          // bottom right
+                ( 1.0, -0.0),          // top right
 
-*/
+                (-0.0, -0.0),          // top left
+                ( 1.0,  1.0),          // bottom right
+                ( 1.0, -0.0),          // top right
+            ],
+            size: size,
+            color: color,
+            textured: false,
+            texture_handle: None
+        }
+    }
+}
+
+impl Drawable for Poly {
+
+    fn get_vertices(&self) -> Vec<(f32,f32,f32)> {
+        self.vertices.to_vec()
+    }
+
+    fn get_color(&self) -> (f32, f32, f32, f32) {
+        self.color.clone()
+    }
+
+    fn get_ti_coords(&self) -> Vec<(f32, f32)> {
+        self.ti_position.to_vec()
+    }
+
+    fn get_texture_handle(&self) -> Option<Arc<CanvasTextureHandle>> {
+        match self.textured {
+            true => {
+                self.texture_handle.clone()
+            },
+            false => None,
+        }
+    }
+
+    fn get_image_handle(&self) -> Option<Arc<CanvasImageHandle>> {
+        None
+    }
+}