mirror of
https://github.com/ghostty-org/ghostty.git
synced 2025-08-02 14:57:31 +03:00
refactor(Metal): make pipeline handling DRYer
This commit is contained in:
Qwerasd
@ -106,7 +106,7 @@ pub const Image = extern struct {
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/// The uniforms that are passed to the terminal cell shader.
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pub const Uniforms = extern struct {
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// Note: all of the explicit aligmnments are copied from the
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// Note: all of the explicit alignments are copied from the
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// MSL developer reference just so that we can be sure that we got
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// it all exactly right.
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@ -171,7 +171,7 @@ pub const Uniforms = extern struct {
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/// The uniforms used for custom postprocess shaders.
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pub const PostUniforms = extern struct {
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// Note: all of the explicit aligmnments are copied from the
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// Note: all of the explicit alignments are copied from the
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// MSL developer reference just so that we can be sure that we got
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// it all exactly right.
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resolution: [3]f32 align(16),
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@ -282,65 +282,16 @@ fn initPostPipeline(
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};
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defer post_library.msgSend(void, objc.sel("release"), .{});
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// Get our vertex and fragment functions
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const func_vert = func_vert: {
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const str = try macos.foundation.String.createWithBytes(
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"full_screen_vertex",
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.utf8,
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false,
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);
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defer str.release();
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const ptr = library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
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break :func_vert objc.Object.fromId(ptr.?);
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};
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const func_frag = func_frag: {
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const str = try macos.foundation.String.createWithBytes(
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"main0",
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.utf8,
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false,
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);
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defer str.release();
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const ptr = post_library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
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break :func_frag objc.Object.fromId(ptr.?);
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};
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defer func_vert.msgSend(void, objc.sel("release"), .{});
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defer func_frag.msgSend(void, objc.sel("release"), .{});
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// Create our descriptor
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const desc = init: {
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const Class = objc.getClass("MTLRenderPipelineDescriptor").?;
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const id_alloc = Class.msgSend(objc.Object, objc.sel("alloc"), .{});
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const id_init = id_alloc.msgSend(objc.Object, objc.sel("init"), .{});
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break :init id_init;
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};
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defer desc.msgSend(void, objc.sel("release"), .{});
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desc.setProperty("vertexFunction", func_vert);
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desc.setProperty("fragmentFunction", func_frag);
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// Set our color attachment
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const attachments = objc.Object.fromId(desc.getProperty(?*anyopaque, "colorAttachments"));
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{
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const attachment = attachments.msgSend(
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objc.Object,
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objc.sel("objectAtIndexedSubscript:"),
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.{@as(c_ulong, 0)},
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);
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attachment.setProperty("pixelFormat", @intFromEnum(pixel_format));
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}
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// Make our state
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var err: ?*anyopaque = null;
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const pipeline_state = device.msgSend(
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objc.Object,
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objc.sel("newRenderPipelineStateWithDescriptor:error:"),
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.{ desc, &err },
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return (Pipeline{
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.vertex_fn = "full_screen_vertex",
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.fragment_fn = "main0",
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.blending_enabled = false,
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}).init(
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device,
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library,
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post_library,
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pixel_format,
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);
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try checkError(err);
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return pipeline_state;
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}
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/// This is a single parameter for the terminal cell shader.
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@ -374,113 +325,18 @@ fn initCellTextPipeline(
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library: objc.Object,
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pixel_format: mtl.MTLPixelFormat,
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) !objc.Object {
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// Get our vertex and fragment functions
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const func_vert = func_vert: {
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const str = try macos.foundation.String.createWithBytes(
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"cell_text_vertex",
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.utf8,
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false,
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);
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defer str.release();
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const ptr = library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
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break :func_vert objc.Object.fromId(ptr.?);
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};
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const func_frag = func_frag: {
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const str = try macos.foundation.String.createWithBytes(
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"cell_text_fragment",
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.utf8,
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false,
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);
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defer str.release();
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const ptr = library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
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break :func_frag objc.Object.fromId(ptr.?);
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};
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defer func_vert.msgSend(void, objc.sel("release"), .{});
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defer func_frag.msgSend(void, objc.sel("release"), .{});
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// Create the vertex descriptor. The vertex descriptor describes the
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// data layout of the vertex inputs. We use indexed (or "instanced")
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// rendering, so this makes it so that each instance gets a single
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// Cell as input.
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const vertex_desc = vertex_desc: {
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const desc = init: {
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const Class = objc.getClass("MTLVertexDescriptor").?;
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const id_alloc = Class.msgSend(objc.Object, objc.sel("alloc"), .{});
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const id_init = id_alloc.msgSend(objc.Object, objc.sel("init"), .{});
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break :init id_init;
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};
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// Our attributes are the fields of the input
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const attrs = objc.Object.fromId(desc.getProperty(?*anyopaque, "attributes"));
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autoAttribute(CellText, attrs);
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// The layout describes how and when we fetch the next vertex input.
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const layouts = objc.Object.fromId(desc.getProperty(?*anyopaque, "layouts"));
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{
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const layout = layouts.msgSend(
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objc.Object,
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objc.sel("objectAtIndexedSubscript:"),
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.{@as(c_ulong, 0)},
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);
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// Access each Cell per instance, not per vertex.
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layout.setProperty("stepFunction", @intFromEnum(mtl.MTLVertexStepFunction.per_instance));
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layout.setProperty("stride", @as(c_ulong, @sizeOf(CellText)));
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}
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break :vertex_desc desc;
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};
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defer vertex_desc.msgSend(void, objc.sel("release"), .{});
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// Create our descriptor
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const desc = init: {
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const Class = objc.getClass("MTLRenderPipelineDescriptor").?;
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const id_alloc = Class.msgSend(objc.Object, objc.sel("alloc"), .{});
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const id_init = id_alloc.msgSend(objc.Object, objc.sel("init"), .{});
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break :init id_init;
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};
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defer desc.msgSend(void, objc.sel("release"), .{});
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// Set our properties
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desc.setProperty("vertexFunction", func_vert);
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desc.setProperty("fragmentFunction", func_frag);
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desc.setProperty("vertexDescriptor", vertex_desc);
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// Set our color attachment
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const attachments = objc.Object.fromId(desc.getProperty(?*anyopaque, "colorAttachments"));
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{
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const attachment = attachments.msgSend(
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objc.Object,
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objc.sel("objectAtIndexedSubscript:"),
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.{@as(c_ulong, 0)},
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);
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attachment.setProperty("pixelFormat", @intFromEnum(pixel_format));
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// Blending. This is required so that our text we render on top
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// of our drawable properly blends into the bg.
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attachment.setProperty("blendingEnabled", true);
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attachment.setProperty("rgbBlendOperation", @intFromEnum(mtl.MTLBlendOperation.add));
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attachment.setProperty("alphaBlendOperation", @intFromEnum(mtl.MTLBlendOperation.add));
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attachment.setProperty("sourceRGBBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one));
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attachment.setProperty("sourceAlphaBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one));
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attachment.setProperty("destinationRGBBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one_minus_source_alpha));
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attachment.setProperty("destinationAlphaBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one_minus_source_alpha));
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}
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// Make our state
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var err: ?*anyopaque = null;
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const pipeline_state = device.msgSend(
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objc.Object,
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objc.sel("newRenderPipelineStateWithDescriptor:error:"),
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.{ desc, &err },
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return (Pipeline{
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.vertex_fn = "cell_text_vertex",
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.fragment_fn = "cell_text_fragment",
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.Vertex = CellText,
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.step_fn = .per_instance,
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.blending_enabled = true,
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}).init(
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device,
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library,
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library,
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pixel_format,
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);
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try checkError(err);
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errdefer pipeline_state.msgSend(void, objc.sel("release"), .{});
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return pipeline_state;
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}
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/// This is a single parameter for the cell bg shader.
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@ -492,78 +348,16 @@ fn initCellBgPipeline(
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library: objc.Object,
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pixel_format: mtl.MTLPixelFormat,
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) !objc.Object {
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// Get our vertex and fragment functions
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const func_vert = func_vert: {
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const str = try macos.foundation.String.createWithBytes(
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"cell_bg_vertex",
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.utf8,
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false,
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);
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defer str.release();
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const ptr = library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
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break :func_vert objc.Object.fromId(ptr.?);
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};
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defer func_vert.msgSend(void, objc.sel("release"), .{});
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const func_frag = func_frag: {
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const str = try macos.foundation.String.createWithBytes(
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"cell_bg_fragment",
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.utf8,
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false,
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);
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defer str.release();
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const ptr = library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
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break :func_frag objc.Object.fromId(ptr.?);
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};
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defer func_frag.msgSend(void, objc.sel("release"), .{});
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// Create our descriptor
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const desc = init: {
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const Class = objc.getClass("MTLRenderPipelineDescriptor").?;
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const id_alloc = Class.msgSend(objc.Object, objc.sel("alloc"), .{});
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const id_init = id_alloc.msgSend(objc.Object, objc.sel("init"), .{});
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break :init id_init;
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};
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defer desc.msgSend(void, objc.sel("release"), .{});
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// Set our properties
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desc.setProperty("vertexFunction", func_vert);
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desc.setProperty("fragmentFunction", func_frag);
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// Set our color attachment
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const attachments = objc.Object.fromId(desc.getProperty(?*anyopaque, "colorAttachments"));
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{
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const attachment = attachments.msgSend(
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objc.Object,
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objc.sel("objectAtIndexedSubscript:"),
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.{@as(c_ulong, 0)},
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);
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attachment.setProperty("pixelFormat", @intFromEnum(pixel_format));
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// Blending. This is required so that our text we render on top
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// of our drawable properly blends into the bg.
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attachment.setProperty("blendingEnabled", true);
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attachment.setProperty("rgbBlendOperation", @intFromEnum(mtl.MTLBlendOperation.add));
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attachment.setProperty("alphaBlendOperation", @intFromEnum(mtl.MTLBlendOperation.add));
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attachment.setProperty("sourceRGBBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one));
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attachment.setProperty("sourceAlphaBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one));
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attachment.setProperty("destinationRGBBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one_minus_source_alpha));
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attachment.setProperty("destinationAlphaBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one_minus_source_alpha));
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}
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// Make our state
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var err: ?*anyopaque = null;
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const pipeline_state = device.msgSend(
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objc.Object,
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objc.sel("newRenderPipelineStateWithDescriptor:error:"),
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.{ desc, &err },
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return (Pipeline{
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.vertex_fn = "cell_bg_vertex",
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.fragment_fn = "cell_bg_fragment",
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.blending_enabled = false,
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}).init(
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device,
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library,
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library,
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pixel_format,
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);
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try checkError(err);
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errdefer pipeline_state.msgSend(void, objc.sel("release"), .{});
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return pipeline_state;
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}
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/// Initialize the image render pipeline for our shader library.
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@ -572,113 +366,147 @@ fn initImagePipeline(
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library: objc.Object,
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pixel_format: mtl.MTLPixelFormat,
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) !objc.Object {
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// Get our vertex and fragment functions
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const func_vert = func_vert: {
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const str = try macos.foundation.String.createWithBytes(
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"image_vertex",
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.utf8,
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false,
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);
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defer str.release();
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return (Pipeline{
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.vertex_fn = "image_vertex",
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.fragment_fn = "image_fragment",
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.Vertex = Image,
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.step_fn = .per_instance,
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.blending_enabled = true,
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}).init(
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device,
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library,
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library,
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pixel_format,
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);
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}
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const ptr = library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
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break :func_vert objc.Object.fromId(ptr.?);
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};
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const func_frag = func_frag: {
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const str = try macos.foundation.String.createWithBytes(
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"image_fragment",
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.utf8,
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false,
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);
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defer str.release();
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/// A struct with all the necessary info to initialize a pipeline.
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const Pipeline = struct {
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/// Name of the vertex function
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vertex_fn: []const u8,
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/// Name of the fragment function
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fragment_fn: []const u8,
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const ptr = library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
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break :func_frag objc.Object.fromId(ptr.?);
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};
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defer func_vert.msgSend(void, objc.sel("release"), .{});
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defer func_frag.msgSend(void, objc.sel("release"), .{});
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/// Vertex attribute struct
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Vertex: ?type = null,
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/// Vertex step function
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step_fn: mtl.MTLVertexStepFunction = .per_vertex,
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// Create the vertex descriptor. The vertex descriptor describes the
|
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// data layout of the vertex inputs. We use indexed (or "instanced")
|
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// rendering, so this makes it so that each instance gets a single
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// Image as input.
|
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const vertex_desc = vertex_desc: {
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/// Whether blending is enabled for the color attachment
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blending_enabled: bool = true,
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fn init(
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self: *const Pipeline,
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device: objc.Object,
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vertex_library: objc.Object,
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fragment_library: objc.Object,
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pixel_format: mtl.MTLPixelFormat,
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) !objc.Object {
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// Create our descriptor
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const desc = init: {
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const Class = objc.getClass("MTLVertexDescriptor").?;
|
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const Class = objc.getClass("MTLRenderPipelineDescriptor").?;
|
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const id_alloc = Class.msgSend(objc.Object, objc.sel("alloc"), .{});
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const id_init = id_alloc.msgSend(objc.Object, objc.sel("init"), .{});
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break :init id_init;
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};
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defer desc.msgSend(void, objc.sel("release"), .{});
|
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|
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// Our attributes are the fields of the input
|
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const attrs = objc.Object.fromId(desc.getProperty(?*anyopaque, "attributes"));
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autoAttribute(Image, attrs);
|
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|
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// The layout describes how and when we fetch the next vertex input.
|
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const layouts = objc.Object.fromId(desc.getProperty(?*anyopaque, "layouts"));
|
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// Get our vertex and fragment functions and add them to the descriptor.
|
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{
|
||||
const layout = layouts.msgSend(
|
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const str = try macos.foundation.String.createWithBytes(
|
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self.vertex_fn,
|
||||
.utf8,
|
||||
false,
|
||||
);
|
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defer str.release();
|
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|
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const ptr = vertex_library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
|
||||
const func_vert = objc.Object.fromId(ptr.?);
|
||||
defer func_vert.msgSend(void, objc.sel("release"), .{});
|
||||
|
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desc.setProperty("vertexFunction", func_vert);
|
||||
}
|
||||
{
|
||||
const str = try macos.foundation.String.createWithBytes(
|
||||
self.fragment_fn,
|
||||
.utf8,
|
||||
false,
|
||||
);
|
||||
defer str.release();
|
||||
|
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const ptr = fragment_library.msgSend(?*anyopaque, objc.sel("newFunctionWithName:"), .{str});
|
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const func_frag = objc.Object.fromId(ptr.?);
|
||||
defer func_frag.msgSend(void, objc.sel("release"), .{});
|
||||
|
||||
desc.setProperty("fragmentFunction", func_frag);
|
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}
|
||||
|
||||
// If we have vertex attributes, create and add a vertex descriptor.
|
||||
if (self.Vertex) |V| {
|
||||
const vertex_desc = init: {
|
||||
const Class = objc.getClass("MTLVertexDescriptor").?;
|
||||
const id_alloc = Class.msgSend(objc.Object, objc.sel("alloc"), .{});
|
||||
const id_init = id_alloc.msgSend(objc.Object, objc.sel("init"), .{});
|
||||
break :init id_init;
|
||||
};
|
||||
defer vertex_desc.msgSend(void, objc.sel("release"), .{});
|
||||
|
||||
// Our attributes are the fields of the input
|
||||
const attrs = objc.Object.fromId(vertex_desc.getProperty(?*anyopaque, "attributes"));
|
||||
autoAttribute(V, attrs);
|
||||
|
||||
// The layout describes how and when we fetch the next vertex input.
|
||||
const layouts = objc.Object.fromId(vertex_desc.getProperty(?*anyopaque, "layouts"));
|
||||
{
|
||||
const layout = layouts.msgSend(
|
||||
objc.Object,
|
||||
objc.sel("objectAtIndexedSubscript:"),
|
||||
.{@as(c_ulong, 0)},
|
||||
);
|
||||
|
||||
layout.setProperty("stepFunction", @intFromEnum(self.step_fn));
|
||||
layout.setProperty("stride", @as(c_ulong, @sizeOf(V)));
|
||||
}
|
||||
|
||||
desc.setProperty("vertexDescriptor", vertex_desc);
|
||||
}
|
||||
|
||||
// Set our color attachment
|
||||
const attachments = objc.Object.fromId(desc.getProperty(?*anyopaque, "colorAttachments"));
|
||||
{
|
||||
const attachment = attachments.msgSend(
|
||||
objc.Object,
|
||||
objc.sel("objectAtIndexedSubscript:"),
|
||||
.{@as(c_ulong, 0)},
|
||||
);
|
||||
|
||||
// Access each Image per instance, not per vertex.
|
||||
layout.setProperty("stepFunction", @intFromEnum(mtl.MTLVertexStepFunction.per_instance));
|
||||
layout.setProperty("stride", @as(c_ulong, @sizeOf(Image)));
|
||||
attachment.setProperty("pixelFormat", @intFromEnum(pixel_format));
|
||||
|
||||
attachment.setProperty("blendingEnabled", self.blending_enabled);
|
||||
// We always use premultiplied alpha blending for now.
|
||||
if (self.blending_enabled) {
|
||||
attachment.setProperty("rgbBlendOperation", @intFromEnum(mtl.MTLBlendOperation.add));
|
||||
attachment.setProperty("alphaBlendOperation", @intFromEnum(mtl.MTLBlendOperation.add));
|
||||
attachment.setProperty("sourceRGBBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one));
|
||||
attachment.setProperty("sourceAlphaBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one));
|
||||
attachment.setProperty("destinationRGBBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one_minus_source_alpha));
|
||||
attachment.setProperty("destinationAlphaBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one_minus_source_alpha));
|
||||
}
|
||||
}
|
||||
|
||||
break :vertex_desc desc;
|
||||
};
|
||||
defer vertex_desc.msgSend(void, objc.sel("release"), .{});
|
||||
|
||||
// Create our descriptor
|
||||
const desc = init: {
|
||||
const Class = objc.getClass("MTLRenderPipelineDescriptor").?;
|
||||
const id_alloc = Class.msgSend(objc.Object, objc.sel("alloc"), .{});
|
||||
const id_init = id_alloc.msgSend(objc.Object, objc.sel("init"), .{});
|
||||
break :init id_init;
|
||||
};
|
||||
defer desc.msgSend(void, objc.sel("release"), .{});
|
||||
|
||||
// Set our properties
|
||||
desc.setProperty("vertexFunction", func_vert);
|
||||
desc.setProperty("fragmentFunction", func_frag);
|
||||
desc.setProperty("vertexDescriptor", vertex_desc);
|
||||
|
||||
// Set our color attachment
|
||||
const attachments = objc.Object.fromId(desc.getProperty(?*anyopaque, "colorAttachments"));
|
||||
{
|
||||
const attachment = attachments.msgSend(
|
||||
// Make our state
|
||||
var err: ?*anyopaque = null;
|
||||
const pipeline_state = device.msgSend(
|
||||
objc.Object,
|
||||
objc.sel("objectAtIndexedSubscript:"),
|
||||
.{@as(c_ulong, 0)},
|
||||
objc.sel("newRenderPipelineStateWithDescriptor:error:"),
|
||||
.{ desc, &err },
|
||||
);
|
||||
try checkError(err);
|
||||
errdefer pipeline_state.msgSend(void, objc.sel("release"), .{});
|
||||
|
||||
attachment.setProperty("pixelFormat", @intFromEnum(pixel_format));
|
||||
|
||||
// Blending. This is required so that our text we render on top
|
||||
// of our drawable properly blends into the bg.
|
||||
attachment.setProperty("blendingEnabled", true);
|
||||
attachment.setProperty("rgbBlendOperation", @intFromEnum(mtl.MTLBlendOperation.add));
|
||||
attachment.setProperty("alphaBlendOperation", @intFromEnum(mtl.MTLBlendOperation.add));
|
||||
attachment.setProperty("sourceRGBBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one));
|
||||
attachment.setProperty("sourceAlphaBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one));
|
||||
attachment.setProperty("destinationRGBBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one_minus_source_alpha));
|
||||
attachment.setProperty("destinationAlphaBlendFactor", @intFromEnum(mtl.MTLBlendFactor.one_minus_source_alpha));
|
||||
return pipeline_state;
|
||||
}
|
||||
|
||||
// Make our state
|
||||
var err: ?*anyopaque = null;
|
||||
const pipeline_state = device.msgSend(
|
||||
objc.Object,
|
||||
objc.sel("newRenderPipelineStateWithDescriptor:error:"),
|
||||
.{ desc, &err },
|
||||
);
|
||||
try checkError(err);
|
||||
|
||||
return pipeline_state;
|
||||
}
|
||||
};
|
||||
|
||||
fn autoAttribute(T: type, attrs: objc.Object) void {
|
||||
inline for (@typeInfo(T).@"struct".fields, 0..) |field, i| {
|
||||
|
||||
Reference in New Issue
Block a user