So.....Ok i understand the Syntax of HLSL. like for example let pretend I have this as my HLSL

struct VOut
{
    float4 position : SV_POSITION;
    float4 color : COLOR;
};

VOut VShader(float4 position : POSITION, float4 color : COLOR)
{
    VOut output;

    output.position = position;
    output.position.xy *= 0.7f;    // "shrink" the vertex on the x and y axes
    output.color = color;

    return output;
}


float4 PShader(float4 position : SV_POSITION, float4 color : COLOR) : SV_TARGET
{
    return color;
}

and I compile them like this:

D3DX11CompileFromFile(L"shaders.hlsl", 0, 0, "VShader", "vs_5_0", 0, 0, 0, &VS, 0, 0);
D3DX11CompileFromFile(L"shaders.hlsl", 0, 0, "PShader", "ps_5_0", 0, 0, 0, &PS, 0, 0);

How does it like......know to change....Im confused exactly at the pipeline between HLSL and the actual Pixels/Vertex on the screen.

is this what actually "applies" them:

dev->CreateVertexShader(VS->GetBufferPointer(), VS->GetBufferSize(), NULL, &pVS);
dev->CreatePixelShader(PS->GetBufferPointer(), PS->GetBufferSize(), NULL, &pPS);

// set the shader objects
devcon->VSSetShader(pVS, 0, 0);
devcon->PSSetShader(pPS, 0, 0);

keep in mind im like a literal BEGINNER at this stuff. Can someone maybe explain WHAT it's doing, im assuming the Vertex HLSL function goes through every vertex (as the input Position:POSITION and color: COLOR) and then changes them to whatever I have in the function, and the output is what was changed....(same goes for Pixel Shader).

Another confusion, I know what a pixel is, and I understand what a vertex is.....but what exactly does the Pixel shader do......

I understand the syntax of HLSL, for example let's pretend I have this as my HLSL:

struct VOut
{
    float4 position : SV_POSITION;
    float4 color : COLOR;
};

VOut VShader(float4 position : POSITION, float4 color : COLOR)
{
    VOut output;

    output.position = position;
    output.position.xy *= 0.7f;    // "shrink" the vertex on the x and y axes
    output.color = color;

    return output;
}


float4 PShader(float4 position : SV_POSITION, float4 color : COLOR) : SV_TARGET
{
    return color;
}

and I compile it like this:

D3DX11CompileFromFile(L"shaders.hlsl", 0, 0, "VShader", "vs_5_0", 0, 0, 0, &VS, 0, 0);
D3DX11CompileFromFile(L"shaders.hlsl", 0, 0, "PShader", "ps_5_0", 0, 0, 0, &PS, 0, 0);

How does it like... know to change... I'm confused about exactly what the pipeline between HLSL and the actual pixels/vertices on the screen is.

Is this what actually "applies" them?

dev->CreateVertexShader(VS->GetBufferPointer(), VS->GetBufferSize(), NULL, &pVS);
dev->CreatePixelShader(PS->GetBufferPointer(), PS->GetBufferSize(), NULL, &pPS);

// set the shader objects
devcon->VSSetShader(pVS, 0, 0);
devcon->PSSetShader(pPS, 0, 0);

Keep in mind I'm like a literal beginner at this stuff. Can someone maybe explain what it's doing? I'm assuming the vertex HLSL function goes through every vertex and then changes them to whatever I have in the function, and the output is what was changed... and similarly for the pixel shader?

Another confusion, I know what a pixel is, and I understand what a vertex is... but what exactly does the pixel shader do?