Can someone explain me with a simple example like changing the color?
based on the model automatically generated by MGCB
#if OPENGL
#define SV_POSITION POSITION
#define VS_SHADERMODEL vs_3_0
#define PS_SHADERMODEL ps_3_0
#else
#define VS_SHADERMODEL vs_4_0_level_9_1
#define PS_SHADERMODEL ps_4_0_level_9_1
#endif
matrix WorldViewProjection;
struct VertexShaderInput
{
float4 Position : POSITION0;
float4 Color : COLOR0;
};
struct VertexShaderOutput
{
float4 Position : SV_POSITION;
float4 Color : COLOR0;
};
VertexShaderOutput MainVS(in VertexShaderInput input)
{
VertexShaderOutput output = (VertexShaderOutput)0;
output.Position = mul(input.Position, WorldViewProjection);
output.Color = input.Color;
return output;
}
float4 MainPS(VertexShaderOutput input) : COLOR
{
return input.Color;
}
technique BasicColorDrawing
{
pass P0
{
VertexShader = compile VS_SHADERMODEL MainVS();
PixelShader = compile PS_SHADERMODEL MainPS();
}
};
and how to use it in draw() function
thanks in advance