yum-mirror/slang

Making it easier to work with shaders

git clone https://git.yummers.dev/yum-mirror/slang

Darren Wihandihoist entry point params for wgsl (#6116)91430870a

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1//TEST:SIMPLE(filecheck=VERT): -target wgsl -stage vertex -entry vertexMain
2//TEST:SIMPLE(filecheck=FRAG): -target wgsl -stage fragment -entry fragmentMain
3
4// Tests three aspects:
5//  1. Flatten the nested struct for the return type of the entry-point
6//  2. For fragment shader, SV_TARGET index must be emitted as @location(index)
7//  3. For non-fragment shader, the user defined semantics should be emitted as @location(index)
8
9struct FragmentOutput
10{
11    //FRAG: @location(1) color1
12    float4 color1 : SV_TARGET1;
13
14    //FRAG: @location(0) color0
15    float4 color0 : SV_TARGET0;
16};
17
18struct NestedVertexOutput
19{
20    float4 color : COLOR0;
21};
22
23struct VertexOutput
24{
25    //VERT: @location(0) uv
26    //FRAG-DAG: @location(0) uv
27    float2 uv : TEXCOORD0;
28
29    //VERT: @location(1) color
30    //FRAG-DAG: @location(1) color
31    NestedVertexOutput nested;
32
33    //VERT: @builtin(position) position
34    //FRAG-DAG: @builtin(position) position
35    float4 position : SV_Position;
36};
37
38VertexOutput vertexMain()
39{
40    VertexOutput out;
41    out.position = float4(1.0, 1.0, 1.0, 1.0);
42    out.uv = float2(0.5, 0.5);
43    out.nested.color = float4(0.0, 0.0, 0.0, 0.0);
44    return out;
45}
46
47//FRAG-DAG: @location(3) color3
48//FRAG-DAG: @location(6) color6
49FragmentOutput fragmentMain(VertexOutput input, float4 color3: COLOR3, float4 color6: COLOR6)
50{
51    FragmentOutput out;
52    out.color0 = input.nested.color + color3;
53    out.color1 = input.nested.color + color6;
54    return out;
55}