notes

notes/Home.txt

@@ -8,9 +8,10 @@ Creation-Date: 2020-02-03T22:11:42-08:00
 === Trac3r : A program to convert images to 2D toolpaths ===
 
  TODO:
-	[ ] Text rendering is half implemented.
+	[x] Text rendering is half implemented.
+		[ ] Pathfinder vulkan backend implementation
 	[ ] Currently using local copies of a few libraries:
-		shade_runner
+		[x] shade_runner ( not gonna happen, my fork has diverged too far )
 		vulkano/vulkano-win
 		vulkano/vulkano-shaders
 		vulkano/vulkano
@@ -18,7 +19,6 @@ Creation-Date: 2020-02-03T22:11:42-08:00
 		[*] Figure out how to make this POS stable (semi stable)
 
 
-
 --------------------
 
 [[~/source/Trac3r-rust/doc/sfml_rust/index.html|Documentation Root]]
@@ -38,9 +38,11 @@ Creation-Date: 2020-02-03T22:11:42-08:00
 
 ==== Context switching ====
 
-So lets finish this text rendering!
+Okay. So now I have gotten myself into a bit of a pickle with the text rendering. What was supposed to be an "easy" hack to get it to work, ended turning into a complete vulkan backend written for the pathfinder gpu abstraction layer. This luckily is within my level of skill (I think) but it is no small task.
+
+When I finally get this done, I should be able to allow [[VkProcessor]] to implement the Device trait, and then replicate the behaviour I am writing for the PoC!!
 
-I remember using a triangle fan to render the fonts using the stencil buffer swapping
+After this. I should have very robust and (hopefully) simple text rendering interface.
 
 
 --------------------

notes/PossiblePathfinderPort.txt

@@ -5,7 +5,8 @@ Creation-Date: 2020-02-28T22:36:46-08:00
 ====== PossiblePathfinderPort ======
 Created Friday 28 February 2020
 
-
+So I'm just going to use this space to talk about hooking up vulkano to this backend.
+All in all, this seems somewhat simple. This backend expects you to define a dozen or so types which are then passed around and manipulated using this interface.
 
 
 pub struct RenderState<'a, D> where D: Device 
@@ -38,17 +39,32 @@ pub struct RenderState<'a, D> where D: Device
 
 
 	
-	[ ] fn create_texture(&self, format: TextureFormat, size: Vector2I) -> Self::Texture;
+	fn create_texture(&self, format: TextureFormat, size: Vector2I) -> Self::Texture;
+
+	fn create_texture_from_data(&self, 
+		format: TextureFormat, 
+		size: Vector2I, 
+		data: [[TextureDataRef]]
+		) -> Self::Texture;
+
+	**For now I'm going to create just the shader and not the pipeline**
+	fn create_shader(&self, 
+		resources: &dyn ResourceLoader, 
+		name: &str, 
+		kind: ShaderKind)
+			 -> Self::Shader;
+	
+	
+	fn create_shader_from_source(&self, 
+		name: &str, 
+		source: &[u8], 
+		kind: ShaderKind) -> Self::Shader;
 	
-		So for this function I'm going to need to convert Texture 
 	
-	fn create_texture_from_data(&self, format: TextureFormat, size: Vector2I, data: TextureDataRef)
-								-> Self::Texture;
-	fn create_shader(&self, resources: &dyn ResourceLoader, name: &str, kind: ShaderKind)
-					 -> Self::Shader;
-	fn create_shader_from_source(&self, name: &str, source: &[u8], kind: ShaderKind)
-								 -> Self::Shader;
 	fn create_vertex_array(&self) -> Self::VertexArray;
+	
+	**This means more in GL as a program is a part of the state machine**
+	**In vk and metal this just returns the two shaders in one object**
 	fn create_program_from_shaders(
 		&self,
 		resources: &dyn ResourceLoader,
@@ -56,18 +72,38 @@ pub struct RenderState<'a, D> where D: Device
 		vertex_shader: Self::Shader,
 		fragment_shader: Self::Shader,
 	) -> Self::Program;
+	
+	**This one I'm a little shakey on. Where do I get these attributes?**
 	fn get_vertex_attr(&self, program: &Self::Program, name: &str) -> Option<Self::VertexAttr>;
+	
+	**This one as well, how am I storing these?**
 	fn get_uniform(&self, program: &Self::Program, name: &str) -> Self::Uniform;
+	
+	**Probably just allocating a buffer with data. Target is just usage**
+	**See that it passes in a borrow for Buffer, I assume we should do an**
+	**uninitialized_buffer type of deal**
 	fn bind_buffer(&self,
 				   vertex_array: &Self::VertexArray,
 				   buffer: &Self::Buffer, 
 				   target: BufferTarget);
+	
+	**This first bind_vertex_array()'s **
+	**Then it appears to set the instancing using the descriptor and divisor?**
+	**Then it configures the vertex attributes for the state. it's push pop it seems in gl**
 	fn configure_vertex_attr(&self,
 							 vertex_array: &Self::VertexArray,
 							 attr: &Self::VertexAttr,
 							 descriptor: &VertexAttrDescriptor);
+	
+	**This creates the framebuffer using the **
+		**render_pass and swap_image. I assume what is happening here is that**
+		**the api is forcing me to genericize the swap_image into a texture**
 	fn create_framebuffer(&self, texture: Self::Texture) -> Self::Framebuffer;
+	
+	**This just creates an empty buffer **
 	fn create_buffer(&self) -> Self::Buffer;
+	
+	**Allocates using an empty buffer. target is buffer_usage**
 	fn allocate_buffer<T>(
 		&self,
 		buffer: &Self::Buffer,