62 lines
1.9 KiB
C#
62 lines
1.9 KiB
C#
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using System.Linq;
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namespace Csharp_3d_viewer
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{
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public static class Shaders
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{
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private const string VertexShaderText = @"
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#version 430
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layout(location = 0) in vec3 vertexPosition;
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layout(location = 1) in vec3 vertexNormal;
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out vec4 fragmentColor;
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out vec3 fragmentPosition;
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out vec3 fragmentNormal;
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uniform mat4 model;
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uniform mat4 view;
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uniform mat4 projection;
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uniform vec4 color;
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void main()
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{
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fragmentColor = color;
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fragmentPosition = vec3(model * vec4(vertexPosition, 1.0));
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fragmentNormal = mat3(transpose(inverse(model))) * vertexNormal;
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gl_Position = projection * view * model * vec4(vertexPosition, 1);
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}
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";
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private const string FragmentShaderText = @"
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#version 430
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out vec4 fragColor;
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in vec4 fragmentColor;
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in vec3 fragmentPosition;
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in vec3 fragmentNormal;
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void main()
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{
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vec3 lightPosition = vec3(0, 0, 0);
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// diffuse
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vec3 norm = normalize(fragmentNormal);
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vec3 lightDir = lightPosition - fragmentPosition;
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float dist2 = dot(lightDir, lightDir);
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lightDir = normalize(lightDir);
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float diffuse = abs(dot(norm, lightDir)) / dist2;
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fragColor = vec4(fragmentColor.rgb * diffuse, fragmentColor.a);
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}
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";
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public static string[] VertexShaderLines => ConvertToLines(VertexShaderText);
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public static string[] VertexFragmentLines => ConvertToLines(FragmentShaderText);
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private static string[] ConvertToLines(string text)
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{
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return text.Split('\n').Select(s => s + '\n').ToArray();
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}
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}
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}
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