a938c4f900
Phase 8 step 3a of the Metal renderer port:
- New library/modules/gpu/ with types.sx (handles + ClearColor +
TextureFormat enum), api.sx (GPU :: protocol { ... } covering the
lifecycle / per-frame / resource / per-draw surface), and metal.sx
(MetalGPU backend implementing the protocol against CAMetalLayer).
Resource handles are 1-based indices into backend List(*void) tables.
MTL aggregates >16 bytes (MTLRegion, MTLScissorRect) pass via *T to
match arm64 Apple's indirect-by-reference ABI; MTLClearColor + CGSize
go through the HFA path as direct fn-pointer casts on objc_msgSend.
- UIKitPlatform got a gpu_mode: GpuMode toggle + sibling SxMetalView
class registration. In metal mode init skips EAGL context, the
did_finish_launching IMP skips the EAGL drawable-properties dict,
layoutSubviews reads the layer's bounds * dpi_scale into pixel_w/h
instead of allocating a GL renderbuffer, and end_frame is a no-op
(the MetalGPU owns its own present).
- examples/63-metal-clear.sx verifies the pipeline end-to-end on iOS
sim — compiles a pass-through MSL shader (packed_float2/packed_float4
to avoid alignment padding), uploads 3 vertices, draws a colored
triangle on a dark-blue clear.
Compiler fixes (filed-and-fixed in this branch):
- inline if X { return E; } followed by a fall-through final expression
no longer emits two terminators into the same basic block. Verified
by examples/83-inline-if-return-fallthrough.sx.
- Top-level type alias Name :: u32; now resolves correctly as the type
annotation on a global variable (was treated as ptr {}, breaking
comparisons + initializers). Verified by examples/84-global-type-alias.sx.
Issue->feature promotion:
- 16 historical examples/issue-NNNN.sx repros now confirmed-fixed and
renamed to focused feature names (67-82). Each gains a
tests/expected/*.txt + .exit pair so the regression suite covers them.
- 5 stale issue repros deleted (subsumed by broader tests).
Regression suite: 68 passing, 0 failed. macOS chess builds + runs; wasm
chess builds; iOS sim GLES chess still renders the full board; iOS sim
Metal demo renders the triangle.
77 lines
2.1 KiB
Plaintext
77 lines
2.1 KiB
Plaintext
// Generic struct `Animated($T: Lerpable)` monomorphized with a struct type — the
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// `#inline` protocol constraint participates in method dispatch via `self.from.lerp(...)`.
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#import "modules/std.sx";
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#import "modules/math";
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Lerpable :: protocol #inline {
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lerp :: (b: Self, t: f32) -> Self;
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}
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Size :: struct {
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width, height: f32;
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zero :: () -> Size => .{ width = 0.0, height = 0.0 };
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}
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impl Lerpable for Size {
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lerp :: (self: Size, b: Size, t: f32) -> Size {
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Size.{ width = self.width + (b.width - self.width) * t,
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height = self.height + (b.height - self.height) * t };
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}
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}
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Animated :: struct ($T: Lerpable) {
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current: T;
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from: T;
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to: T;
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elapsed: f32;
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duration: f32;
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active: bool;
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make :: (value: T) -> Animated(T) {
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Animated(T).{
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current = value, from = value, to = value,
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elapsed = 0.0, duration = 0.0, active = false
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};
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}
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set_immediate :: (self: *Animated(T), value: T) {
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self.current = value;
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self.from = value;
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self.to = value;
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self.active = false;
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}
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animate_to :: (self: *Animated(T), target: T, dur: f32) {
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self.from = self.current;
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self.to = target;
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self.elapsed = 0.0;
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self.duration = dur;
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self.active = true;
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}
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tick :: (self: *Animated(T), dt: f32) {
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if !self.active { return; }
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self.elapsed += dt;
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t := clamp(self.elapsed / self.duration, 0.0, 1.0);
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self.current = self.from.lerp(self.to, t);
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if t >= 1.0 {
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self.current = self.to;
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self.active = false;
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}
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}
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}
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main :: () -> void {
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anim := Animated(Size).make(Size.zero());
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anim.set_immediate(Size.{ width = 100.0, height = 50.0 });
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print("after set: {}x{}\n", anim.current.width, anim.current.height);
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anim.animate_to(Size.{ width = 200.0, height = 100.0 }, 1.0);
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anim.tick(0.5);
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print("mid anim: {}x{}\n", anim.current.width, anim.current.height);
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anim.tick(0.5);
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print("end anim: {}x{}\n", anim.current.width, anim.current.height);
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}
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