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metal.lisp
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(in-package :mtl)
;; Type
(cffi:defcstruct (origin :class %origin)
(x :unsigned-long)
(y :unsigned-long)
(z :unsigned-long))
(defstruct (origin
(:constructor origin (x y z)))
x y z)
(defmethod cffi:translate-from-foreign (p (type %origin))
(cffi:with-foreign-slots ((x y z) p (:struct origin))
(origin x y z)))
(defmethod cffi:translate-into-foreign-memory (origin (type %origin) p)
(cffi:with-foreign-slots ((x y z) p (:struct origin))
(setf x (floor (origin-x origin))
y (floor (origin-y origin))
z (floor (origin-z origin)))))
(cffi:defcstruct (size :class %size)
(width :unsigned-long)
(height :unsigned-long)
(depth :unsigned-long))
(defstruct (size
(:constructor size (width height depth)))
width height depth)
(defmethod cffi:translate-from-foreign (p (type %size))
(cffi:with-foreign-slots ((width height depth) p (:struct size))
(size width height depth)))
(defmethod cffi:translate-into-foreign-memory (size (type %size) p)
(cffi:with-foreign-slots ((width height depth) p (:struct size))
(setf width (floor (size-width size))
height (floor (size-height size))
depth (floor (msize-depth size)))))
(cffi:defcstruct (region :class %region)
(origin (:struct origin))
(size (:struct size)))
(defstruct (region
(:constructor region (x y z width height depth)))
x y z width height depth)
(defmethod cffi:translate-from-foreign (p (type %region))
(cffi:with-foreign-slots ((origin size) p (:struct region))
(region (origin-x origin)
(origin-y origin)
(origin-z origin)
(size-width size)
(size-height size)
(size-depth size))))
(defmethod cffi:translate-into-foreign-memory (region (type %region) p)
(let* ((origin (cffi:foreign-slot-pointer p '(:struct region) 'origin))
(size (cffi:foreign-slot-pointer p '(:struct region) 'size)))
(cffi:with-foreign-slots ((x y z) origin (:struct origin))
(cffi:with-foreign-slots ((width height depth) size (:struct size))
(setf x (floor (region-x region))
y (floor (region-y region))
z (floor (region-z region))
width (floor (region-width region))
height (floor (region-height region))
depth (floor (region-depth region)))))))
(cffi:defcstruct (viewport :class %viewport)
(x :double)
(y :double)
(width :double)
(height :double)
(near :double)
(far :double))
(defstruct (viewport
(:constructor viewport (x y width height near far)))
x y width height near far)
(defmethod cffi:translate-from-foreign (p (type %viewport))
(cffi:with-foreign-slots ((x y width height near far) p (:struct viewport))
(viewport x y width height near far)))
(defmethod cffi:translate-into-foreign-memory (viewport (type %viewport) p)
(cffi:with-foreign-slots ((x y width height near far) p (:struct viewport))
(setf x (coerce (viewport-x viewport) 'double-float)
y (coerce (viewport-y viewport) 'double-float)
width (coerce (viewport-width viewport) 'double-float)
height (coerce (viewport-height viewport) 'double-float)
near (coerce (viewport-near viewport) 'double-float)
far (coerce (viewport-far viewport) 'double-float))))
;; CommandQueue
(defun make-command-queue (device)
(ns:objc device "newCommandQueue" :pointer))
(defun get-command-buffer (command-queue)
(ns:objc command-queue "commandBuffer" :pointer))
(defun get-render-command-encoder (command-buffer descriptor)
(ns:objc command-buffer "renderCommandEncoderWithDescriptor:" :pointer descriptor :pointer))
;; CommandBuffer
(defun present-drawable (command-buffer drawable)
(ns:objc command-buffer "presentDrawable:" :pointer drawable))
(defun commit (command-buffer)
(ns:objc command-buffer "commit"))
;; CommandEncoder
(defun set-viewport (command-encoder viewport)
(ns:objc command-encoder "setViewport:" (:struct viewport) viewport))
(defun set-render-pipeline-state (command-encoder pipeline-state)
(ns:objc command-encoder "setRenderPipelineState:" :pointer pipeline-state))
(defun set-depth-stencil-state (command-encoder depth-stencil-state)
(ns:objc command-encoder "setDepthStencilState:" :pointer depth-stencil-state))
(defun set-vertex-buffer (command-encoder buffer &key (offset 0) index)
(ns:objc command-encoder "setVertexBuffer:offset:atIndex:" :pointer buffer
:int offset
:int index))
(defun set-fragment-buffer (command-encoder buffer &key (offset 0) index)
(ns:objc command-encoder "setFragmentBuffer:offset:atIndex:" :pointer buffer
:int offset
:int index))
(defun set-fragment-texture (command-encoder texture &key index)
(ns:objc command-encoder "setFragmentTexture:atIndex:" :pointer texture :int index))
(defun draw-primitives (command-encoder primitive start count &key (instance-count 1))
(ns:objc command-encoder "drawPrimitives:vertexStart:vertexCount:instanceCount:"
:int primitive
:int start
:int count
:int instance-count))
(defun draw-indexed-primitives (command-encoder primitive count type buffer &key (offset 0) (instance-count 1))
(ns:objc command-encoder "drawIndexedPrimitives:indexCount:indexType:indexBuffer:indexBufferOffset:instanceCount:"
:int primitive
:int count
:int type
:pointer buffer
:int offset
:int instance-count))
(defun end-encoding (command-encoder)
(ns:objc command-encoder "endEncoding"))
;; Pipeline
(defun make-library (device source &key (options (cffi:null-pointer)))
(ns:objc device "newLibraryWithSource:options:error:"
:pointer (ns:autorelease (ns:make-ns-string source))
:pointer options
:pointer (cffi:null-pointer)
:pointer))
(defun make-function (library name)
(ns:objc library "newFunctionWithName:" :pointer (ns:autorelease (ns:make-ns-string name)) :pointer))
(defun make-render-pipeline-descriptor ()
(ns::new "MTLRenderPipelineDescriptor"))
(defun set-vertex-function (render-pipeline-descriptor function)
(ns:objc render-pipeline-descriptor "setVertexFunction:" :pointer function))
(defun set-vertex-descriptor (render-pipeline-descriptor vertex-descriptor)
(ns:objc render-pipeline-descriptor "setVertexDescriptor:" :pointer vertex-descriptor))
(defun set-fragment-function (render-pipeline-descriptor function)
(ns:objc render-pipeline-descriptor "setFragmentFunction:" :pointer function))
(defun set-color-attachment-pixel-format (render-pipeline-descriptor index pixel-format)
(let* ((color-attachment
(ns:objc (ns:objc render-pipeline-descriptor "colorAttachments" :pointer)
"objectAtIndexedSubscript:" :int index :pointer)))
(ns:objc color-attachment "setPixelFormat:" :int pixel-format)))
(defun set-depth-attachment-pixel-format (render-pipeline-descriptor pixel-format)
(ns:objc render-pipeline-descriptor "setDepthAttachmentPixelFormat:" :unsigned-int pixel-format))
(defun make-vertex-descriptor ()
(ns::new "MTLVertexDescriptor"))
(defun set-vertex-descriptor-attribute (vertex-descriptor index format offset buffer-index)
(let* ((attribute (ns:objc (ns:objc vertex-descriptor "attributes" :pointer)
"objectAtIndexedSubscript:" :int index :pointer)))
(ns:objc attribute "setFormat:" :int format)
(ns:objc attribute "setOffset:" :int offset)
(ns:objc attribute "setBufferIndex:" :int buffer-index)))
(defun set-vertex-descriptor-layout (vertex-descriptor index stride step-rate step-function)
(let* ((layout (ns:objc (ns:objc vertex-descriptor "layouts" :pointer)
"objectAtIndexedSubscript:" :int index :pointer)))
(ns:objc layout "setStride:" :int stride)
(ns:objc layout "setStepRate:" :int step-rate)
(ns:objc layout "setStepFunction:" :int step-function)))
(defun make-render-pipeline-state (device render-pipeline-descriptor)
(ns:objc device "newRenderPipelineStateWithDescriptor:error:"
:pointer render-pipeline-descriptor
:pointer (cffi:null-pointer)
:pointer))
(defun make-depth-stencil-descriptor ()
(ns:new "MTLDepthStencilDescriptor"))
(defun set-depth-compare-function (depth-stencil-descriptor compare)
(ns:objc depth-stencil-descriptor "setDepthCompareFunction:" :unsigned-int compare))
(defun set-depth-write-enabled (depth-stencil-descriptor enabled)
(ns:objc depth-stencil-descriptor "setDepthWriteEnabled:" :bool enabled))
(defun make-depth-stencil-state (device depth-stencil-descriptor)
(ns:objc device "newDepthStencilStateWithDescriptor:" :pointer depth-stencil-descriptor :pointer))
;; MTLBuffer
(defun make-buffer (device data length &optional (options +resource-cpu-cache-mode-default-cache+))
(ns:objc device "newBufferWithBytes:length:options:"
:pointer data
:int length
:int options
:pointer))
(defun buffer-contents (buffer)
(ns:objc buffer "contents" :pointer))
;; MTLTexture
(defun get-texture2d-descriptor (pixel-format width height mipmap)
(ns:objc "MTLTextureDescriptor" "texture2DDescriptorWithPixelFormat:width:height:mipmapped:"
:int pixel-format
:int width
:int height
:bool mipmap
:pointer))
(defun make-texture (device descriptor)
(ns:objc device "newTextureWithDescriptor:" :pointer descriptor :pointer))
(defun replace-region (texture region mipmap-level data bpr)
(ns:objc texture "replaceRegion:mipmapLevel:withBytes:bytesPerRow:"
(:struct region) region
:int mipmap-level
:pointer data
:int bpr))
;; Function
(cffi:defcstruct (clear-color :class %clear-color)
(red :double)
(green :double)
(blue :double)
(alpha :double))
(defstruct (clear-color
(:constructor make-clear-color (red green blue alpha)))
red green blue alpha)
(defmethod cffi:translate-from-foreign (p (type %clear-color))
(cffi:with-foreign-slots ((red green blue alpha) p (:struct clear-color))
(make-clear-color red green blue alpha)))
(defmethod cffi:translate-into-foreign-memory (clear-color (type %clear-color) p)
(cffi:with-foreign-slots ((red green blue alpha) p (:struct clear-color))
(setf red (coerce (clear-color-red clear-color) 'double-float)
green (coerce (clear-color-green clear-color) 'double-float)
blue (coerce (clear-color-blue clear-color) 'double-float)
alpha (coerce (clear-color-alpha clear-color) 'double-float))))
(defun clear-color (mtk-view red green blue alpha)
(ns:objc mtk-view "setClearColor:" (:struct clear-color) (make-clear-color red green blue alpha)))
;; ================================================================================
;; constants
;; ================================================================================
(defmacro define-constant (name value)
`(progn
(defconstant ,name ,value)
(export ',name)))
;; primitive-type ================================================================================
(define-constant +primitive-type-point+ 0)
(define-constant +primitive-type-line+ 1)
(define-constant +primitive-type-line-strip+ 2)
(define-constant +primitive-type-triangle+ 3)
(define-constant +primitive-type-triangle-strip+ 4)
;; index-type ================================================================================
(define-constant +index-type-uint16+ 0)
(define-constant +index-type-uint32+ 1)
;; ResourceOptions ================================================================================
(define-constant +resource-cpu-cache-mode-default-cache+ 0)
(define-constant +resource-cpu-cache-mode-write-combined+ 1)
(define-constant +resource-storage-mode-shared+ 0)
(define-constant +resource-storage-mode-managed+ 16)
(define-constant +resource-storage-mode-private+ 32)
(define-constant +resource-storage-mode-memoryless+ 48)
;; vertex-format ================================================================================
(define-constant +vertex-format-invalid+ 0)
(define-constant +vertex-format-uchar+ 45)
(define-constant +vertex-format-uchar2+ 1)
(define-constant +vertex-format-uchar3+ 2)
(define-constant +vertex-format-uchar4+ 3)
(define-constant +vertex-format-char+ 46)
(define-constant +vertex-format-char2+ 4)
(define-constant +vertex-format-char3+ 5)
(define-constant +vertex-format-char4+ 6)
(define-constant +vertex-format-ushort+ 49)
(define-constant +vertex-format-ushort2+ 13)
(define-constant +vertex-format-ushort3+ 14)
(define-constant +vertex-format-ushort4+ 15)
(define-constant +vertex-format-short+ 50)
(define-constant +vertex-format-short2+ 16)
(define-constant +vertex-format-short3+ 17)
(define-constant +vertex-format-short4+ 18)
(define-constant +vertex-format-short+ 50)
(define-constant +vertex-format-short2+ 16)
(define-constant +vertex-format-short3+ 17)
(define-constant +vertex-format-short4+ 18)
(define-constant +vertex-format-half+ 53)
(define-constant +vertex-format-half2+ 25)
(define-constant +vertex-format-half3+ 26)
(define-constant +vertex-format-half4+ 27)
(define-constant +vertex-format-float+ 28)
(define-constant +vertex-format-float2+ 29)
(define-constant +vertex-format-float3+ 30)
(define-constant +vertex-format-float4+ 31)
(define-constant +vertex-format-uint+ 36)
(define-constant +vertex-format-uint2+ 37)
(define-constant +vertex-format-uint3+ 38)
(define-constant +vertex-format-uint4+ 39)
(define-constant +vertex-format-int+ 32)
(define-constant +vertex-format-int2+ 33)
(define-constant +vertex-format-int3+ 34)
(define-constant +vertex-format-int4+ 35)
;; vertex- ================================================================================
(define-constant +vertex-step-function-constant+ 0)
(define-constant +vertex-step-function-per-vertex+ 1)
(define-constant +vertex-step-function-per-instance+ 2)
(define-constant +vertex-step-function-per-patch+ 3)
(define-constant +vertex-step-function-per-patch-control-point+ 4)
;; compare-function ================================================================================
(define-constant +compare-function-never+ 0)
(define-constant +compare-function-less+ 1)
(define-constant +compare-function-equal+ 2)
(define-constant +compare-function-less-equal+ 3)
(define-constant +compare-function-greater+ 4)
(define-constant +compare-function-not-equal+ 5)
(define-constant +compare-function-greater-equal+ 6)
;; PixelFormat ================================================================================
;; Ordinary 8-Bit Pixel Formats
(define-constant +pixel-format-a8-unorm+ 1)
(define-constant +pixel-format-r8-unorm+ 10)
(define-constant +pixel-format-r8-unorm-srgb+ 11)
(define-constant +pixel-format-r8-snorm+ 12)
(define-constant +pixel-format-r8-uint+ 13)
(define-constant +pixel-format-r8-sint+ 14)
;; Ordinary 16-Bit Pixel Formats
(define-constant +pixel-format-r16-unorm+ 20)
(define-constant +pixel-format-r16-snorm+ 22)
(define-constant +pixel-format-r16-uint+ 23)
(define-constant +pixel-format-r16-sint+ 24)
(define-constant +pixel-format-r16-float+ 25)
(define-constant +pixel-format-rg8-unorm+ 30)
(define-constant +pixel-format-rg8-unorm-srgb+ 31)
(define-constant +pixel-format-rg8-snorm+ 32)
(define-constant +pixel-format-rg8-uint+ 33)
(define-constant +pixel-format-rg8-sint+ 34)
;; Packed 16-Bit Pixel Formats
(define-constant +pixel-format-b5g6r5-unorm+ 40)
(define-constant +pixel-format-a1bgr5-unorm+ 41)
(define-constant +pixel-format-abgr4-unorm+ 42)
(define-constant +pixel-format-bgr5a1-unorm+ 43)
;; Ordinary 32-Bit Pixel Formats
(define-constant +pixel-format-r32-uint+ 53)
(define-constant +pixel-format-r32-sint+ 54)
(define-constant +pixel-format-r32-float+ 55)
(define-constant +pixel-format-rg16-unorm+ 60)
(define-constant +pixel-format-rg16-snorm+ 62)
(define-constant +pixel-format-rg16-uint+ 63)
(define-constant +pixel-format-rg16-sint+ 64)
(define-constant +pixel-format-rg16-float+ 65)
(define-constant +pixel-format-rgba8-unorm+ 70)
(define-constant +pixel-format-rgba8-unorm-srgb+ 71)
(define-constant +pixel-format-rgba8-snorm+ 72)
(define-constant +pixel-format-rgba8-uint+ 73)
(define-constant +pixel-format-rgba8-sint+ 74)
(define-constant +pixel-format-bgra8-unorm+ 80)
(define-constant +pixel-format-bgra8-unorm-srgb+ 81)
;; Depth and Stencil Pixel Formats
(define-constant +pixel-format-depth16-unorm+ 250)
(define-constant +pixel-format-depth32-float+ 252)
(define-constant +pixel-format-stencil8+ 253)
(define-constant +pixel-format-depth24-unorm-stencil8+ 255)
(define-constant +pixel-format-depth32-float-stencil8+ 260)
(define-constant +pixel-format-x32-stencil8+ 261)
(define-constant +pixel-format-x24-stencil8+ 262)