public void InvalidSourceFailsCreation(string src, string expected)
{
using var effect = SKRuntimeEffect.Create(src, out var errorText);
Assert.Null(effect);
Assert.Contains(expected, errorText);
}
public void ColorFiltersRunOnGpu()
{
using var ctx = CreateGlContext();
ctx.MakeCurrent();
using var grContext = GRContext.CreateGl();
var info = new SKImageInfo(512, 256, SKColorType.Rgba8888);
using var surface = SKSurface.Create(grContext, false, info);
using var canvas = surface.Canvas;
var src = @"
uniform shader input;
half4 main() {
return sample(input);
}";
using var img = SKImage.FromEncodedData(Path.Combine(PathToImages, "baboon.jpg"));
canvas.DrawImage(img, 0, 0);
using var effect = SKRuntimeEffect.Create(src, out var errorText);
Assert.Null(errorText);
Assert.NotNull(effect);
var cf1 = effect.ToColorFilter();
using var p = new SKPaint
{
ColorFilter = cf1,
};
canvas.DrawImage(img, 256, 0, p);
}
public void RuntimeEffectUniformsThrowsCorrectly(string name, object value)
{
var src = @"
uniform float uniform_float;
uniform float uniform_float_array[2];
half4 main() { return half4(0); }";
using var effect = SKRuntimeEffect.Create(src, out _);
var uniforms = new SKRuntimeEffectUniforms(effect);
if (value is int intValue)
{
Assert.Throws <ArgumentException>(() => uniforms.Add(name, intValue));
}
else if (value is float floatValue)
{
Assert.Throws <ArgumentException>(() => uniforms.Add(name, floatValue));
}
else if (value is float[] floatArray)
{
Assert.Throws <ArgumentException>(() => uniforms.Add(name, floatArray));
}
else
{
throw new ArgumentException($"Invalid test data type {value}");
}
}
public void RuntimeEffectChildrenWorksCorrectly()
{
using var blueShirt = SKImage.FromEncodedData(Path.Combine(PathToImages, "blue-shirt.jpg"));
using var textureShader = blueShirt.ToShader();
var src = @"
uniform shader color_map;
uniform shader normal_map;
half4 main() { return half4(0); }";
using var effect = SKRuntimeEffect.Create(src, out _);
var children = new SKRuntimeEffectChildren(effect);
children.Add("color_map", textureShader);
Assert.Equal(new SKShader[] { textureShader, null }, children.ToArray());
children.Add("normal_map", textureShader);
Assert.Equal(new SKShader[] { textureShader, textureShader }, children.ToArray());
children.Add("color_map", null);
Assert.Equal(new SKShader[] { null, textureShader }, children.ToArray());
children.Reset();
Assert.Equal(new SKShader[] { null, null }, children.ToArray());
}
public void CorrectUniformsAreListed(string header, string[] uniforms)
{
var src = $"{header} half4 main() {{ return half4(0); }}";
using var effect = SKRuntimeEffect.Create(src, out _);
Assert.Equal(uniforms, effect.Uniforms);
}
public void CorrectChildrenAreListed(string header, string[] children)
{
var src = $"{header} half4 main() {{ return half4(0); }}";
using var effect = SKRuntimeEffect.Create(src, out _);
Assert.Equal(children, effect.Children);
}
public void InvalidColorFilters(string src)
{
using var effect = SKRuntimeEffect.Create(src, out var errorText);
var uniforms = new SKRuntimeEffectUniforms(effect);
Assert.NotNull(effect.ToShader(false, uniforms));
Assert.Null(effect.ToColorFilter(uniforms));
}
protected override void OnLoad()
{
base.OnLoad();
_runtimeEffect = SKRuntimeEffect.Create(_shaderText, out var errors);
if (_runtimeEffect == null)
{
Console.Error.WriteLine(errors);
Environment.Exit(1);
}
}
public TestEffect(string src)
{
effect = SKRuntimeEffect.Create(src, out var errorText);
Assert.Null(errorText);
Assert.NotNull(effect);
uniforms = new SKRuntimeEffectUniforms(effect);
children = new SKRuntimeEffectChildren(effect);
}
public void RuntimeEffectUniformsThrowsWhithInvalidName()
{
var src = @"
uniform float uniform_float;
half4 main() { return half4(0); }";
using var effect = SKRuntimeEffect.Create(src, out _);
var uniforms = new SKRuntimeEffectUniforms(effect);
Assert.Throws <ArgumentOutOfRangeException>(() => uniforms.Add("invalid", 1f));
}
public void RuntimeEffectChildrenMatchesEffect(string header, string[] children)
{
var src = $"{header} half4 main() {{ return half4(0); }}";
using var effect = SKRuntimeEffect.Create(src, out _);
var effectChildren = new SKRuntimeEffectChildren(effect);
Assert.Equal(children, effectChildren.Names);
Assert.Equal(new SKShader[children.Length], effectChildren.ToArray());
}
public void RuntimeEffectUniformsMatchesEffect(string header, string[] uniforms)
{
var src = $"{header} half4 main() {{ return half4(0); }}";
using var effect = SKRuntimeEffect.Create(src, out _);
var effectUniforms = new SKRuntimeEffectUniforms(effect);
Assert.Equal(uniforms, effectUniforms.Names);
Assert.Equal(effect.UniformSize, effectUniforms.ToData().Size);
Assert.Equal(uniforms, effectUniforms);
}
public void RuntimeEffectInitializesCorrectChildren()
{
var src = @"
uniform shader color_map;
uniform shader normal_map;
half4 main() { return half4(0); }";
using var effect = SKRuntimeEffect.Create(src, out _);
var effectChildren = new SKRuntimeEffectChildren(effect);
Assert.Equal(2, effectChildren.Count);
Assert.Equal(2, effectChildren.Names.Count);
Assert.Equal(new[] { "color_map", "normal_map" }, effectChildren.Names);
Assert.Equal(new[] { "color_map", "normal_map" }, effectChildren);
}
public void RuntimeEffectUniformsWorksCorrectly()
{
var src = @"
uniform float uniform_float;
uniform float uniform_float_array[2];
uniform float2 uniform_float2;
half4 main() { return half4(0); }";
using var effect = SKRuntimeEffect.Create(src, out _);
var uniforms = new SKRuntimeEffectUniforms(effect);
uniforms.Add("uniform_float", 1f);
uniforms.Add("uniform_float_array", new[] { 1f, 2f });
uniforms.Add("uniform_float2", new[] { 1f, 2f });
uniforms.Reset();
}
public void RuntimeEffectUniformsWorksCorrectlyWithCollectionIndexer()
{
var src = @"
uniform float uniform_float;
uniform float uniform_float_array[2];
uniform float2 uniform_float2;
half4 main() { return half4(0); }";
using var effect = SKRuntimeEffect.Create(src, out _);
var uniforms = new SKRuntimeEffectUniforms(effect)
{
["uniform_float"] = 1f,
["uniform_float_array"] = new[] { 1f, 2f },
["uniform_float2"] = new[] { 1f, 2f }
};
}
public void ImageCanClearBackground(float threshold, float exponent, uint backgroundColor, uint shirtColor)
{
using var ctx = CreateGlContext();
ctx.MakeCurrent();
using var grContext = GRContext.CreateGl();
var info = new SKImageInfo(500, 500, SKColorType.Rgba8888);
using var surface = SKSurface.Create(grContext, false, info);
var canvas = surface.Canvas;
canvas.Clear(SKColors.Black);
using var blueShirt = SKImage.FromEncodedData(Path.Combine(PathToImages, "blue-shirt.jpg"));
using var textureShader = blueShirt.ToShader();
var src = @"
uniform shader color_map;
uniform float scale;
uniform half exp;
uniform float3 in_colors0;
half4 main(float2 p) {
half4 texColor = sample(color_map, p);
if (length(abs(in_colors0 - pow(texColor.rgb, half3(exp)))) < scale)
discard;
return texColor;
}";
using var effect = SKRuntimeEffect.Create(src, out var errorText);
Assert.Null(errorText);
Assert.NotNull(effect);
var uniformSize = effect.UniformSize;
Assert.Equal(5 * sizeof(float), uniformSize);
var uniforms = new SKRuntimeEffectUniforms(effect)
{
["scale"] = threshold,
["exp"] = exponent,
["in_colors0"] = new[] { 1f, 1f, 1f },
};
var children = new SKRuntimeEffectChildren(effect)
{
["color_map"] = textureShader
};
using var shader = effect.ToShader(true, uniforms, children);
using var paint = new SKPaint { Shader = shader };
canvas.DrawRect(SKRect.Create(400, 400), paint);
var actual = new SKColor[500 * 500];
fixed(void *a = actual)
Assert.True(surface.ReadPixels(info, (IntPtr)a, info.RowBytes, 0, 0));
Assert.Equal(backgroundColor, actual[100 * info.Width + 100]);
Assert.Equal(shirtColor, actual[230 * info.Width + 300]);
}