66 lines
1.3 KiB
Plaintext
66 lines
1.3 KiB
Plaintext
struct VertexShaderInput {
|
|
// Per Vertex
|
|
float4 pos : VERTEX_POSITION;
|
|
float2 uv : UV_VERTEX;
|
|
uint vertex_id : SV_VertexID;
|
|
|
|
// Per Instance
|
|
float4 pos_size : INSTANCE_POSITION_SIZE;
|
|
uint tile_type : TILE_TYPE;
|
|
float4 uv0uv1 : UV_INSTANCE;
|
|
float4 uv2uv3 : UV_INSTANCE2;
|
|
};
|
|
|
|
[[vk::binding(0, 1)]]
|
|
cbuffer constants {
|
|
float aspect_ratio;
|
|
};
|
|
|
|
struct VertexShaderOutput {
|
|
float4 pos : SV_POSITION;
|
|
float2 uv : COORDINATES;
|
|
};
|
|
|
|
[shader("vertex")]
|
|
VertexShaderOutput main(VertexShaderInput input) {
|
|
VertexShaderOutput output;
|
|
|
|
float3x3 coord_sys = {
|
|
2, 0, -1,
|
|
0, -2, 1,
|
|
0, 0, 1
|
|
};
|
|
|
|
input.pos_size.xy = mul(coord_sys, float3(input.pos_size.xy, 1)).xy;
|
|
|
|
float3x3 pos = {
|
|
1, 0, input.pos_size.x,
|
|
0, 1, input.pos_size.y,
|
|
0, 0, 1
|
|
};
|
|
|
|
float3x3 size = {
|
|
input.pos_size.z, 0, 0,
|
|
0, input.pos_size.w, 0,
|
|
0, 0, 1
|
|
};
|
|
|
|
output.pos.xy = mul(pos, mul(size, input.pos.xyz)).xy;
|
|
|
|
float correction_factor = aspect_ratio / (16.0 / 9.0);
|
|
if(correction_factor < 1)
|
|
output.pos.y *= correction_factor;
|
|
else
|
|
output.pos.x /= correction_factor;
|
|
|
|
output.pos.zw = float2(0, 1);
|
|
|
|
switch(input.vertex_id) {
|
|
case 0: output.uv = input.uv0uv1.xy; break;
|
|
case 1: output.uv = input.uv0uv1.zw; break;
|
|
case 2: output.uv = input.uv2uv3.xy; break;
|
|
case 3: output.uv = input.uv2uv3.zw; break;
|
|
}
|
|
|
|
return output;
|
|
} |