@@ -13,11 +13,10 @@ import (
	"fmt"
	"unsafe"
)

/*
#cgo CFLAGS: -x objective-c
#cgo LDFLAGS: -framework Metal -framework Foundation
#include <stdlib.h>
#include "mtl.h"
struct Library Go_Device_MakeLibrary(void * device, _GoString_ source) {
	return Device_MakeLibrary(device, _GoStringPtr(source), _GoStringLen(source));
@@ -47,12 +46,13 @@ const (
type PixelFormat uint8

// The data formats that describe the organization and characteristics
// of individual pixels in a texture.
const (
	PixelFormatRGBA8UNorm PixelFormat = 70 // Ordinary format with four 8-bit normalized unsigned integer components in RGBA order.
	PixelFormatBGRA8UNorm PixelFormat = 80 // Ordinary format with four 8-bit normalized unsigned integer components in BGRA order.
	PixelFormatRGBA8UNorm     PixelFormat = 70 // Ordinary format with four 8-bit normalized unsigned integer components in RGBA order.
	PixelFormatBGRA8UNorm     PixelFormat = 80 // Ordinary format with four 8-bit normalized unsigned integer components in BGRA order.
	PixelFormatBGRA8UNormSRGB PixelFormat = 81 // Ordinary format with four 8-bit normalized unsigned integer components in BGRA order with conversion between sRGB and linear space.
)

// PrimitiveType defines geometric primitive types for drawing commands.
//
// Reference: https://developer.apple.com/documentation/metal/mtlprimitivetype.
@@ -213,11 +213,11 @@ type RenderPipelineDescriptor struct {
// RenderPipelineColorAttachmentDescriptor describes a color render target that specifies
// the color configuration and color operations associated with a render pipeline.
//
// Reference: https://developer.apple.com/documentation/metal/mtlrenderpipelinecolorattachmentdescriptor.
type RenderPipelineColorAttachmentDescriptor struct {
	// PixelFormat is the pixel format of the color attachment’s texture.
	// PixelFormat is the pixel format of the color attachment's texture.
	PixelFormat PixelFormat
}

// RenderPassDescriptor describes a group of render targets that serve as
// the output destination for pixels generated by a render pass.
@@ -505,10 +505,17 @@ func (rce RenderCommandEncoder) SetRenderPipelineState(rps RenderPipelineState)
// Reference: https://developer.apple.com/documentation/metal/mtlrendercommandencoder/1515829-setvertexbuffer.
func (rce RenderCommandEncoder) SetVertexBuffer(buf Buffer, offset, index int) {
	C.RenderCommandEncoder_SetVertexBuffer(rce.commandEncoder, buf.buffer, C.uint_t(offset), C.uint_t(index))
}

// SetVertexBytes sets a block of data for the vertex function.
//
// Reference: https://developer.apple.com/documentation/metal/mtlrendercommandencoder/1515846-setvertexbytes.
func (rce RenderCommandEncoder) SetVertexBytes(bytes unsafe.Pointer, length uintptr, index int) {
	C.RenderCommandEncoder_SetVertexBytes(rce.commandEncoder, bytes, C.size_t(length), C.uint_t(index))
}

// DrawPrimitives renders one instance of primitives using vertex data
// in contiguous array elements.
//
// Reference: https://developer.apple.com/documentation/metal/mtlrendercommandencoder/1516326-drawprimitives.
func (rce RenderCommandEncoder) DrawPrimitives(typ PrimitiveType, vertexStart, vertexCount int) {

@@ -93,10 +93,11 @@ void * CommandBuffer_MakeBlitCommandEncoder(void * commandBuffer);

void CommandEncoder_EndEncoding(void * commandEncoder);

void RenderCommandEncoder_SetRenderPipelineState(void * renderCommandEncoder, void * renderPipelineState);
void RenderCommandEncoder_SetVertexBuffer(void * renderCommandEncoder, void * buffer, uint_t offset, uint_t index);
void RenderCommandEncoder_SetVertexBytes(void * renderCommandEncoder, const void * bytes, size_t length, uint_t index);
void RenderCommandEncoder_DrawPrimitives(void * renderCommandEncoder, uint8_t primitiveType, uint_t vertexStart, uint_t vertexCount);

void BlitCommandEncoder_Synchronize(void * blitCommandEncoder, void * resource);

void * Library_MakeFunction(void * library, const char * name);

@@ -1,9 +1,9 @@
// +build darwin

#include <stdlib.h>
#import <Metal/Metal.h>
#include <stdlib.h>
#include "mtl.h"

struct Device CreateSystemDefaultDevice() {
	id<MTLDevice> device = MTLCreateSystemDefaultDevice();
	if (!device) {
@@ -134,18 +134,24 @@ void RenderCommandEncoder_SetRenderPipelineState(void * renderCommandEncoder, vo
	[(id<MTLRenderCommandEncoder>)renderCommandEncoder setRenderPipelineState:(id<MTLRenderPipelineState>)renderPipelineState];
}

void RenderCommandEncoder_SetVertexBuffer(void * renderCommandEncoder, void * buffer, uint_t offset, uint_t index) {
	[(id<MTLRenderCommandEncoder>)renderCommandEncoder setVertexBuffer:(id<MTLBuffer>)buffer
	                                                            offset:offset
	                                                           atIndex:index];
	                                                            offset:(NSUInteger)offset
	                                                           atIndex:(NSUInteger)index];
}

void RenderCommandEncoder_SetVertexBytes(void * renderCommandEncoder, const void * bytes, size_t length, uint_t index) {
	[(id<MTLRenderCommandEncoder>)renderCommandEncoder setVertexBytes:bytes
	                                                           length:(NSUInteger)length
	                                                          atIndex:(NSUInteger)index];
}

void RenderCommandEncoder_DrawPrimitives(void * renderCommandEncoder, uint8_t primitiveType, uint_t vertexStart, uint_t vertexCount) {
	[(id<MTLRenderCommandEncoder>)renderCommandEncoder drawPrimitives:primitiveType
	                                                      vertexStart:vertexStart
	                                                      vertexCount:vertexCount];
	[(id<MTLRenderCommandEncoder>)renderCommandEncoder drawPrimitives:(MTLPrimitiveType)primitiveType
	                                                      vertexStart:(NSUInteger)vertexStart
	                                                      vertexCount:(NSUInteger)vertexCount];
}

void BlitCommandEncoder_Synchronize(void * blitCommandEncoder, void * resource) {
	[(id<MTLBlitCommandEncoder>)blitCommandEncoder synchronizeResource:(id<MTLResource>)resource];
}