[Test] public void Composition()
{
ShaderSourceBuilder builder = new ShaderSourceBuilder();
string mainShader = new StringBuilder()
.AppendLine("uniform vec4 mainUniformA;")
.AppendLine("uniform float mainUniformB;")
.AppendLine("uniform vec4 sharedUniformA;")
.AppendLine()
.AppendLine("attribute vec4 mainAttributeA;")
.AppendLine("attribute vec4 sharedAttributeA;")
.AppendLine("in float mainAttributeB;")
.AppendLine()
.AppendLine("varying vec4 sharedVaryingA;")
.AppendLine("varying vec4 mainVaryingA;")
.AppendLine("out float mainVaryingB;")
.AppendLine()
.AppendLine("void main()")
.AppendLine("{")
.AppendLine(" gl_Position = sharedFunc(gl_Vertex);")
.AppendLine("}")
.ToString();
string sharedShaderA = new StringBuilder()
.AppendLine("uniform vec4 sharedUniformA;")
.AppendLine("attribute vec4 sharedAttributeA;")
.AppendLine("varying vec4 sharedVaryingA;")
.AppendLine()
.AppendLine("vec4 sharedFuncA(vec4 pos)")
.AppendLine("{")
.AppendLine(" return pos + vec4(1.0, 0.0, 0.0, 0.0);")
.AppendLine("}")
.ToString();
string sharedShaderB = new StringBuilder()
.AppendLine("uniform float sharedUniformB;")
.AppendLine("in float sharedAttributeB;")
.AppendLine("out float sharedVaryingB;")
.AppendLine()
.AppendLine("vec4 sharedFuncB(vec4 pos)")
.AppendLine("{")
.AppendLine(" return pos + vec4(1.0, 0.0, 0.0, 0.0);")
.AppendLine("}")
.ToString();
string expectedResultShader = new StringBuilder()
.AppendLine("#line 10000")
.AppendLine("uniform vec4 sharedUniformA;")
.AppendLine("attribute vec4 sharedAttributeA;")
.AppendLine("varying vec4 sharedVaryingA;")
.AppendLine()
.AppendLine("vec4 sharedFuncA(vec4 pos)")
.AppendLine("{")
.AppendLine(" return pos + vec4(1.0, 0.0, 0.0, 0.0);")
.AppendLine("}")
.AppendLine()
.AppendLine("#line 20000")
.AppendLine("uniform float sharedUniformB;")
.AppendLine("in float sharedAttributeB;")
.AppendLine("out float sharedVaryingB;")
.AppendLine()
.AppendLine("vec4 sharedFuncB(vec4 pos)")
.AppendLine("{")
.AppendLine(" return pos + vec4(1.0, 0.0, 0.0, 0.0);")
.AppendLine("}")
.AppendLine()
.AppendLine("#line 1")
.AppendLine("uniform vec4 mainUniformA;")
.AppendLine("uniform float mainUniformB;")
.AppendLine("// uniform vec4 sharedUniformA;")
.AppendLine()
.AppendLine("attribute vec4 mainAttributeA;")
.AppendLine("// attribute vec4 sharedAttributeA;")
.AppendLine("in float mainAttributeB;")
.AppendLine()
.AppendLine("// varying vec4 sharedVaryingA;")
.AppendLine("varying vec4 mainVaryingA;")
.AppendLine("out float mainVaryingB;")
.AppendLine()
.AppendLine("void main()")
.AppendLine("{")
.AppendLine(" gl_Position = sharedFunc(gl_Vertex);")
.AppendLine("}")
.ToString();
builder.SetMainChunk(mainShader);
builder.AddSharedChunk(sharedShaderA);
builder.AddSharedChunk(sharedShaderB);
string resultShader = builder.Build();
Assert.AreEqual(expectedResultShader, resultShader);
}