private static void DrawTriangle(Vertex v1, Vertex v2, Vertex v3)
{
__ShaderName__ shader = new __ShaderName__();
//调用顶点着色shader
__CreateVSInputStruct1__
__VSOutputType__ p1 = shader.__VertexShaderName__(vi1);
__CreateVSInputStruct2__
__VSOutputType__ p2 = shader.__VertexShaderName__(vi2);
__CreateVSInputStruct3__
__VSOutputType__ p3 = shader.__VertexShaderName__(vi3);
p1 = ToScreen(p1);
p2 = ToScreen(p2);
p3 = ToScreen(p3);
//Console.WriteLine($"{p1.Position} {p2.Position} {p3.Position}");
//Console.WriteLine((p1.Position.Y - p2.Position.Y));
//排序，并调用填充函数
Sort(ref p1, ref p2, ref p3);
if (p2.Position.Y == p3.Position.Y)
{
FillFlatTriangle(p1, p2, p3, shader, false);
}
else if (p1.Position.Y == p2.Position.Y)
{
FillFlatTriangle(p3, p1, p2, shader, true);
}
else
{
float t = (p2.Position.Y - p1.Position.Y) / (p3.Position.Y - p1.Position.Y);
__VSOutputType__ p4 = Lerp(p1, p3, t);
FillFlatTriangle(p1, p2, p4, shader, false);
FillFlatTriangle(p3, p2, p4, shader, true);
}
}
private static void DrawTriangle(Vertex v1, Vertex v2, Vertex v3)
{
//调用顶点着色shader
__CreateVSInputStruct1__
__VSOutputType__ p1 = Shader.__VertexShaderName__(vi1);
__CreateVSInputStruct2__
__VSOutputType__ p2 = Shader.__VertexShaderName__(vi2);
__CreateVSInputStruct3__
__VSOutputType__ p3 = Shader.__VertexShaderName__(vi3);
//转换到屏幕坐标
p1 = ToScreen(p1);
p2 = ToScreen(p2);
p3 = ToScreen(p3);
//消除畸变
p1 = MulOnePerZ(p1);
p2 = MulOnePerZ(p2);
p3 = MulOnePerZ(p3);
//排序，并调用填充函数
Sort(ref p1, ref p2, ref p3);
if (p2.Position.Y == p3.Position.Y)
{
FillFlatTriangle(p1, p2, p3, false);
}
else if (p1.Position.Y == p2.Position.Y)
{
FillFlatTriangle(p3, p1, p2, true);
}
else
{
float t = (p2.Position.Y - p1.Position.Y) / (p3.Position.Y - p1.Position.Y);
__VSOutputType__ p4 = Lerp(p1, p3, t);
FillFlatTriangle(p1, p2, p4, false);
FillFlatTriangle(p3, p2, p4, true);
}
}