Initial draw package

draw/shaders/generated/base_2d.vert.metal

@@ -0,0 +1,88 @@
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using namespace metal;
+
+struct Uniforms
+{
+    float4x4 projection;
+    float dpi_scale;
+    uint mode;
+};
+
+struct Primitive
+{
+    float4 bounds;
+    uint color;
+    uint kind_flags;
+    float2 _pad;
+    float4 params;
+    float4 params2;
+};
+
+struct Primitive_1
+{
+    float4 bounds;
+    uint color;
+    uint kind_flags;
+    float2 _pad;
+    float4 params;
+    float4 params2;
+};
+
+struct Primitives
+{
+    Primitive_1 primitives[1];
+};
+
+struct main0_out
+{
+    float4 f_color [[user(locn0)]];
+    float2 f_local_or_uv [[user(locn1)]];
+    float4 f_params [[user(locn2)]];
+    float4 f_params2 [[user(locn3)]];
+    uint f_kind_flags [[user(locn4)]];
+    float4 gl_Position [[position]];
+};
+
+struct main0_in
+{
+    float2 v_position [[attribute(0)]];
+    float2 v_uv [[attribute(1)]];
+    float4 v_color [[attribute(2)]];
+};
+
+vertex main0_out main0(main0_in in [[stage_in]], constant Uniforms& _12 [[buffer(0)]], const device Primitives& _70 [[buffer(1)]], uint gl_InstanceIndex [[instance_id]])
+{
+    main0_out out = {};
+    if (_12.mode == 0u)
+    {
+        out.f_color = in.v_color;
+        out.f_local_or_uv = in.v_uv;
+        out.f_params = float4(0.0);
+        out.f_params2 = float4(0.0);
+        out.f_kind_flags = 0u;
+        out.gl_Position = _12.projection * float4(in.v_position * _12.dpi_scale, 0.0, 1.0);
+    }
+    else
+    {
+        Primitive p;
+        p.bounds = _70.primitives[int(gl_InstanceIndex)].bounds;
+        p.color = _70.primitives[int(gl_InstanceIndex)].color;
+        p.kind_flags = _70.primitives[int(gl_InstanceIndex)].kind_flags;
+        p._pad = _70.primitives[int(gl_InstanceIndex)]._pad;
+        p.params = _70.primitives[int(gl_InstanceIndex)].params;
+        p.params2 = _70.primitives[int(gl_InstanceIndex)].params2;
+        float2 corner = in.v_position;
+        float2 world_pos = mix(p.bounds.xy, p.bounds.zw, corner);
+        float2 center = (p.bounds.xy + p.bounds.zw) * 0.5;
+        out.f_color = unpack_unorm4x8_to_float(p.color);
+        out.f_local_or_uv = (world_pos - center) * _12.dpi_scale;
+        out.f_params = p.params;
+        out.f_params2 = p.params2;
+        out.f_kind_flags = p.kind_flags;
+        out.gl_Position = _12.projection * float4(world_pos * _12.dpi_scale, 0.0, 1.0);
+    }
+    return out;
+}
+