GLSLPROGRAM METALPROGRAM unity
https://docs.unity3d.com/Manual/SL-GLSLShaderPrograms.html
unity里面可以直接写原生的shader
用相应的宏包起来
CGPROGRAM
GLSLPROGRAM
HLSLPROGRAM
METALPROGRAM
ENDCG ENDGLSL ENDHLSL ENDMETAL
Shader "MetalSimpleTexture"
{
Properties
{
_MainTex ("Texture", 2D) = "white" {}
_Color ("Main Color", Color) = (1,1,1,1)
}
SubShader
{
Tags { "RenderType"="Opaque" }
LOD 100
Pass
{
METALINCLUDE
#include <metal_stdlib>
#include <metal_texture>
ENDMETAL
METALPROGRAM
#pragma vertex vert
#pragma fragment frag
using namespace metal;
// currently METALPROGRAM supports only one uniform buffer, shared between vertex program and fragment shader
struct Globals
{
METAL_CONST_MATRIX(float, 4,4, unity_ObjectToWorld);
METAL_CONST_MATRIX(float, 4,4, unity_MatrixVP);
METAL_CONST_VECTOR(half, 4, _Color);
};
struct InputVP
{
float4 pos METAL_VERTEX_INPUT(0);
float2 uv METAL_VERTEX_INPUT(3);
};
struct OutputVP
{
float4 pos [[ position ]];
float2 uv [[ user(TEXCOORD0) ]];
};
struct OutputFS
{
half4 color [[ color(0) ]];
};
vertex OutputVP vert(constant Globals& glob [[ buffer(0) ]], InputVP input [[ stage_in ]])
{
OutputVP output;
output.pos = glob.unity_MatrixVP * (glob.unity_ObjectToWorld * input.pos);
output.uv = input.uv;
return output;
}
fragment OutputFS frag(constant Globals& glob [[ buffer(0) ]], OutputVP input [[ stage_in ]], METAL_TEX_INPUT(texture2d<half, access::sample>, 0, _MainTex))
{
OutputFS output;
output.color.rgb = glob._Color.rgb * _MainTex.sample(sampler__MainTex, input.uv).xyz;
output.color.a = 1;
return output;
}
ENDMETAL
}
}
}
