Hello,
Could someone write how to make wireframe using HLSL?
Now I have the following code inside vertex shader:
cbuffer MatrixBuffer
{
matrix worldMatrix;
matrix viewMatrix;
matrix projectionMatrix;
};
//////////////
// TYPEDEFS //
//////////////
struct VertexInputType
{
float4 position : POSITION;
float2 tex : TEXCOORD0;
float3 normal : NORMAL;
};
struct PixelInputType
{
float4 position : SV_POSITION;
float2 tex : TEXCOORD0;
float3 normal : NORMAL;
};
////////////////////////////////////////////////////////////////////////////////
// Vertex Shader
////////////////////////////////////////////////////////////////////////////////
PixelInputType LightVertexShader(VertexInputType input)
{
const float C = 0.1f;
float Far = 100000000.0f;
PixelInputType output;
// Change the position vector to be 4 units for proper matrix calculations.
input.position.w = 1.0f;
// Calculate the position of the vertex against the world, view, and projection matrices.
output.position = mul(input.position, worldMatrix); //???????????, ???????? ? ???????? ?????????
output.position = mul(output.position, viewMatrix);
output.position = mul(output.position, projectionMatrix);
output.position.z = log(C*output.position.z + 1) / log(C*Far + 1) * output.position.w;
// Store the texture coordinates for the pixel shader.
output.tex = input.tex;
// Calculate the normal vector against the world matrix only.
output.normal = mul(input.normal, (float3x3)worldMatrix);
// Normalize the normal vector.
output.normal = normalize(output.normal);
return output;
}
What I need to add to have a possibility switch wireframe on and off using only shader?