darkfi/bin/darkwallet/src/shader.rs

use miniquad::*;

pub const GL_VERTEX: &str = r#"#version 100
attribute vec2 in_pos;
attribute vec4 in_color;
attribute vec2 in_uv;

varying lowp vec4 color;
varying lowp vec2 uv;

uniform mat4 Projection;
uniform mat4 Model;

void main() {
    gl_Position = Projection * Model * vec4(in_pos, 0, 1);
    color = in_color;
    uv = in_uv;
}"#;

pub const GL_FRAGMENT: &str = r#"#version 100
varying lowp vec4 color;
varying lowp vec2 uv;

uniform sampler2D tex;

void main() {
    gl_FragColor = color * texture2D(tex, uv);
}"#;

pub const METAL: &str = r#"
#include <metal_stdlib>

using namespace metal;

struct Uniforms
{
    float4x4 Projection;
    float4x4 Model;
};

struct Vertex
{
    float2 in_pos   [[attribute(0)]];
    float4 in_color [[attribute(1)]];
    float2 in_uv    [[attribute(2)]];
};

struct RasterizerData
{
    float4 position [[position]];
    float4 color [[user(locn0)]];
    float2 uv [[user(locn1)]];
};

vertex RasterizerData vertexShader(Vertex v [[stage_in]])
{
    RasterizerData out;

    out.position = uniforms.Model * uniforms.Projection * float4(v.in_pos.xy, 0.0, 1.0);
    out.color = v.in_color;
    out.uv = v.texcoord;

    return out;
}

fragment float4 fragmentShader(RasterizerData in [[stage_in]], texture2d<float> tex [[texture(0)]], sampler texSmplr [[sampler(0)]])
{
    return in.color * tex.sample(texSmplr, in.uv);
}

"#;

pub fn meta() -> ShaderMeta {
    ShaderMeta {
        images: vec!["tex".to_string()],
        uniforms: UniformBlockLayout { uniforms: vec![] },
    }
}