Questions tagged [metal]

Metal is Apple's proprietary hardware-accelerated graphics API for macOS, iOS and tvOS.

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Do D3D11 / Metal / Vulcan programs commonly use upload/buffer threads?

I am porting an older OpenGL ES 2 program to more modern APIs (DX11/Metal/Vulkan, let's say.) The existing code uses a dedicated uploading/buffering thread (via a "share context") to upload ...
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Very basic question: Passing data in fragment shader to next frame (Metal)

I am casually trying to learn a bit about writing simple fragment shaders, in particular using Metal API. I have been experimenting in KodeLife. As a simple example, I am trying to remake the Double ...
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138 views

Quaternions distorting object in Metal

I've been trying to get rotations with quaternions to work for a while now, and I feel I am very close to it actually working but I just can't get it to work. I do not have a view matrix yet and am ...
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306 views

Rendering voxel data efficiently

With Metal, I need to pass in an array of primitives to the GPU to be rendered. I'm making a terrain-based voxel game like Minecraft, but I have a problem. foring ...
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664 views

Unreal editor warns that Xcode is not installed on MacOS 10.14

I'm running MacOS 10.14.6. When I launch Unreal v4.25.0, I get the following warning: Xcode was not detected on this Mac. Metal shader compilation will fall back to runtime compiled text shaders, ...
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Why is Metal is rendering textures SLIGHTLY darker than they should be?

I already checked this question. Using [MTKTextureLoader.Option.SRGB : false] in texture loader options doesn't work. All that happens is when I do ...
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1answer
38 views

One DeviceContext per Material?

In D3D11, we have a DeviceContext, which represents the Renderpipeline. In Metal, we have a RenderPipelineState. In Metal, I cache the RenderPipelineState, it is the abstraction of a "material". Is ...
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1answer
217 views

How to render two or more images on a video frame in the same draw call using Metal?

I'm a newbie to graphics programming and I have an existing code base which basically takes frame from video and passes it to a metal shader where effects (like colour changes) happen. What is ...
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711 views

How do I get a Metal texture ID to render to it with Ogre?

I looked in the documentation, but I don't know how to get the texture ID. ...
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145 views

Are GPU drivers hand optimized for specific games using low-level APIs?

The GPU drivers often have slightly different behavior depending on game or program, which is using them. It optimizes performance, bypasses bugs and improves overall experience in popular games, ...
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2answers
231 views

How do I use delta time time-stepping in a triple-buffering scenario?

I am creating a graphics application in Metal. One of the things we are suggested to do is to use triple buffers in order to allow for the GPU and CPU to work more in parallel. Essentially instead of ...
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200 views

Using a MTLTexture as the environment map of a SCNScene

I want to set a MTLTexture object as the environment map of a scene, as it seems to be possible according to the documentation. I can set the environment map to be ...
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593 views

IOS very simple 2d engine/api rendering showdown [closed]

So after taking some time running through a course, I believe I have enough experience with referring back to the course how to make the game I wish to all apart from one thing. How to draw the game ...
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686 views

What is the shader format for Metal shaders shipped with iOS applications?

I am interested in analyzing existing shaders implemented using Apple's Metal framework. From my previous experience on other platforms with OpenGL, I have found that applications sometimes bundle ...
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3k views

How Apple Metal API distinguishes uniforms from vertices buffers?

I am not sure how metal distinguishes uniforms from vertices buffers? As far as I know code for passing uniforms in buffers are the same like for vertices: ...