2a49f7e82d
restrict was supported, but it broke in MSL 3.0. __restrict works on all versions, so opt for that instead. Also check for RestrictPointer decoration and refactor to_restrict() to not take optional parameter to make it more obvious when implied space character is added.
50 lines
1.5 KiB
GLSL
50 lines
1.5 KiB
GLSL
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct Position;
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struct PositionReferences;
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struct Position
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{
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float2 positions[1];
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};
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struct Registers
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{
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float4x4 view_projection;
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device PositionReferences* references;
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};
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struct PositionReferences
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{
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device Position* buffers[1];
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};
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struct main0_out
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{
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float4 out_color [[user(locn0)]];
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float4 gl_Position [[position]];
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};
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vertex main0_out main0(constant Registers& registers [[buffer(0)]], uint gl_InstanceIndex [[instance_id]], uint gl_VertexIndex [[vertex_id]])
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{
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main0_out out = {};
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int slice = int(gl_InstanceIndex);
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const device Position* __restrict positions = registers.references->buffers[slice];
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float2 pos = positions->positions[int(gl_VertexIndex)] * 2.5;
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pos += ((float2(float(slice % 8), float(slice / 8)) - float2(3.5)) * 3.0);
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out.gl_Position = registers.view_projection * float4(pos, 0.0, 1.0);
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int index_x = int(gl_VertexIndex) % 16;
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int index_y = int(gl_VertexIndex) / 16;
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float r = 0.5 + (0.300000011920928955078125 * sin(float(index_x)));
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float g = 0.5 + (0.300000011920928955078125 * sin(float(index_y)));
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int checkerboard = (index_x ^ index_y) & 1;
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r *= ((float(checkerboard) * 0.800000011920928955078125) + 0.20000000298023223876953125);
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g *= ((float(checkerboard) * 0.800000011920928955078125) + 0.20000000298023223876953125);
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out.out_color = float4(r, g, 0.1500000059604644775390625, 1.0);
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return out;
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}
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