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flip y positions

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This commit is contained in:
Samuliak 2024-07-02 16:58:29 +02:00
parent 56262c2c24
commit cd12d88994
1 changed files with 3 additions and 0 deletions
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3
src/host_shaders/metal_shaders.metal
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@ -10,6 +10,7 @@ vertex DisplayVertexOut vertexDisplay(uint vid [[vertex_id]]) {
DisplayVertexOut out;
out.uv = float2((vid << 1) & 2, vid & 2);
out.position = float4(out.uv * 2.0f + -1.0f, 0.0f, 1.0f);
out.position.y = -out.position.y;
return out;
}
@ -86,6 +87,8 @@ vertex DrawVertexOut vertexDraw(DrawVertexIn in [[stage_in]], constant PicaRegs&
out.position = in.position;
// HACK: rotate the position
out.position.xy = -out.position.yx;
// Flip the y position
out.position.y = -out.position.y;
// in.position.z is in range of [-1 ... 1], convert it to [0 ... 1]
out.position.z = (in.position.z + 1.0) * 0.5;