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updated metal native rendering plugin sample to use V2 interface #3

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Merged
alexey-unity merged 1 commit into from
Nov 6, 2024
Merged

updated metal native rendering plugin sample to use V2 interface #3

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27 changes: 17 additions & 10 deletions Graphics/MetalNativeRenderingPlugin/Assets/Plugins/iOS/MetalPlugin.m
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Original file line number Diff line number Diff line change
Expand Up @@ -11,9 +11,7 @@
static IUnityInterfaces* g_UnityInterfaces = 0;
static IUnityGraphics* g_Graphics = 0;

// NB finally in 2017.4 we switched to versioned metal plugin interface
// NB old unversioned interface will be still provided for some time for backwards compatibility
static IUnityGraphicsMetalV1* g_MetalGraphics = 0;
static IUnityGraphicsMetalV2* g_MetalGraphics = 0;


// plugin assets
Expand Down Expand Up @@ -60,7 +58,7 @@ static void CreatePluginAssets() {

id<MTLLibrary> lib = [device newLibraryWithSource:shaderStr options:nil error:nil];
g_VProg = [lib newFunctionWithName:@"vprog"];
g_FShaderColor = [lib newFunctionWithName:@"fshader_color"], g_FShaderTexture = [lib newFunctionWithName:@"fshader_tex"];
g_FShaderColor = [lib newFunctionWithName:@"fshader_color"]; g_FShaderTexture = [lib newFunctionWithName:@"fshader_tex"];

// pos.x pos.y uv.x uv.y
const float vdata[] = {
Expand Down Expand Up @@ -128,7 +126,7 @@ static void DoExtraDrawCall() {
// RT format changed - recreate render pipeline
// we silently assume that depth/stencil format does not change
// even though we dont need it we need to set it up as otherwise validation will whine
g_ExtraDrawCallPixelFormat = rtColor.pixelFormat, g_ExtraDrawCallSampleCount = (int)rtColor.sampleCount;
g_ExtraDrawCallPixelFormat = rtColor.pixelFormat; g_ExtraDrawCallSampleCount = (int)rtColor.sampleCount;
g_ExtraDrawCallPipe = CreateCommonRenderPipeline(g_FShaderColor, g_ExtraDrawCallPixelFormat, rtDepth.pixelFormat, rtStencil.pixelFormat, g_ExtraDrawCallSampleCount);
}

Expand All @@ -144,7 +142,7 @@ static void DoExtraDrawCall() {

static UnityRenderBuffer g_CopySrcRB = 0, g_CopyDstRB = 0;
UNITY_INTERFACE_EXPORT UNITY_INTERFACE_API void SetRTCopyTargets(void* src, void* dst) {
g_CopySrcRB = src, g_CopyDstRB = dst;
g_CopySrcRB = src; g_CopyDstRB = dst;
}

// we need to take special care about what "texture" do we use
Expand Down Expand Up @@ -193,27 +191,36 @@ static void DoCaptureRT() {
// prepare render pass
MTLRenderPassColorAttachmentDescriptor* att = [[mtlBundle classNamed: @"MTLRenderPassColorAttachmentDescriptor"] new];
// NB we assume AA was already resolved, so we dont care
att.texture = dst; att.loadAction = MTLLoadActionLoad, att.storeAction = MTLStoreActionStore;
att.texture = dst; att.loadAction = MTLLoadActionLoad; att.storeAction = MTLStoreActionStore;

MTLRenderPassDescriptor* desc = [[mtlBundle classNamed: @"MTLRenderPassDescriptor"] new];
desc.colorAttachments[0] = att;

// prepare render pipeline
if(dst.pixelFormat != g_RTCopyPixelFormat || dst.sampleCount != g_RTCopySampleCount) {
// RT format changed - recreate render pipeline
g_RTCopyPixelFormat = dst.pixelFormat, g_RTCopySampleCount = (int)dst.sampleCount;
g_RTCopyPixelFormat = dst.pixelFormat; g_RTCopySampleCount = (int)dst.sampleCount;
g_RTCopyPipe = CreateCommonRenderPipeline(g_FShaderTexture, g_RTCopyPixelFormat, MTLPixelFormatInvalid, MTLPixelFormatInvalid, g_RTCopySampleCount);
}

// note that this is just an example of how to create your own command buffer, properly commiting unity's one
// this is absolutely not needed here, and was added just for the illustration purposes
[g_MetalGraphics->CommitCurrentCommandBuffer() waitUntilScheduled];
id<MTLCommandBuffer> cb = [g_MetalGraphics->CommandQueue() commandBuffer];
cb.label = @"Dummy Test CB";

// render
id<MTLRenderCommandEncoder> cmd = [g_MetalGraphics->CurrentCommandBuffer() renderCommandEncoderWithDescriptor:desc];
id<MTLRenderCommandEncoder> cmd = [cb renderCommandEncoderWithDescriptor:desc];
[cmd setRenderPipelineState:g_RTCopyPipe];
[cmd setCullMode:MTLCullModeNone];
[cmd setVertexBuffer:g_VB offset:0 atIndex:0];
[cmd setFragmentTexture:g_RTCopy atIndex:0];
[cmd drawIndexedPrimitives:MTLPrimitiveTypeTriangle indexCount:6 indexType:MTLIndexTypeUInt16 indexBuffer:g_IB indexBufferOffset:0];
[cmd endEncoding];
cmd = nil;

[cb commit];
cb = nil;
}


Expand Down Expand Up @@ -252,7 +259,7 @@ UnityRenderingEvent UNITY_INTERFACE_EXPORT UNITY_INTERFACE_API GetRenderEventFun
void UNITY_INTERFACE_EXPORT UNITY_INTERFACE_API UnityPluginLoad(IUnityInterfaces* unityInterfaces) {
g_UnityInterfaces = unityInterfaces;
g_Graphics = UNITY_GET_INTERFACE(g_UnityInterfaces, IUnityGraphics);
g_MetalGraphics = UNITY_GET_INTERFACE(g_UnityInterfaces, IUnityGraphicsMetalV1);
g_MetalGraphics = UNITY_GET_INTERFACE(g_UnityInterfaces, IUnityGraphicsMetalV2);

// we get plugin load after initial graphics init, so do callback manually
g_Graphics->RegisterDeviceEventCallback(OnGraphicsDeviceEvent);
Expand Down