3D Graphics with Metal Ā· Shaders | raywenderlich.com

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This is a companion discussion topic for the original entry at https://www.raywenderlich.com/1258241-3d-graphics-with-metal/lessons/5
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hello Caroline, thanks for the great tutorial. Sorry, it seems like a silly question, but Iā€™m not able to render anything when I use struts instead of float values?

#include <metal_stdlib>
using namespace metal;

struct VertexOut {
    float4 position [[ position ]];
    float point_size [[ point_size ]];
    float3 color;
};

static constant VertexOut verticies[4] = {
{
    .position = float4(-0.5, -0.2, 0, 1),
    .point_size = 60,
    .color = float3(1, 0, 0)
},
{
    .position = float4(0.2, -0.2, 0, 1),
    .point_size = 60,
    .color = float3(0, 1, 0)
},
{
    .position = float4(0, 0.5, 0, 1),
    .point_size = 60,
    .color = float3(0, 0, 1)
}
};

vertex VertexOut vertex_default(uint vertex_id [[ vertex_id ]])
{
    return verticies[vertex_id];
}

fragment float4 fragment_default(VertexOut in [[ stage_in ]])
{
    return float4(in.color, 1);
}
3

@borisdering - What does your draw call in Renderer say? Are you rendering the correct number of vertices?