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simple pixel shader

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This commit is contained in:
Zack Buhman 2025-12-22 17:25:07 -06:00
parent 47ce3ee503
commit da92a49ed9
3 changed files with 38 additions and 1 deletions
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27
main.cpp
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@ -29,6 +29,7 @@ IDirect3DVertexBuffer9 * g_pVB = NULL;
IDirect3DVertexDeclaration9 * g_pVertexDeclaration = NULL;
ID3DXConstantTable * g_pConstantTable = NULL;
IDirect3DVertexShader9 * g_pVertexShader = NULL;
IDirect3DPixelShader9 * g_pPixelShader = NULL;
IDirectInput8 * g_pDI = NULL;
IDirectInputDevice8 * g_pdiDevice;
@ -149,6 +150,7 @@ void Render()
g_pd3dDevice->SetVertexDeclaration(g_pVertexDeclaration);
g_pd3dDevice->SetVertexShader(g_pVertexShader);
g_pd3dDevice->SetPixelShader(g_pPixelShader);
g_pd3dDevice->SetStreamSource(0, g_pVB, 0, (sizeof (CUSTOMVERTEX)));
g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 1);
@ -374,6 +376,31 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
return 0;
}
//////////////////////////////////////////////////////////////////////
// pixel shader
//////////////////////////////////////////////////////////////////////
res = D3DXCompileShaderFromFile(L"main.psh", // pSrcFile
NULL, // pDefines
NULL, // pInclude
"Main", // pFunctionName
"ps_3_0", // pProfile
dwShaderFlags, // Flags
&pCode, // ppShader
NULL, // ppErrorMsgs
&g_pConstantTable // ppConstantTable
);
if (FAILED(res)) {
fprintf(stderr, "D3DXCompileShader\n");
return 0;
}
res = g_pd3dDevice->CreatePixelShader((DWORD*)pCode->GetBufferPointer(), &g_pPixelShader);
pCode->Release();
if(FAILED(res)) {
fprintf(stderr, "CreatePixelShader\n");
return 0;
}
//
fprintf(stderr, "success\n");

9
main.psh Normal file
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@ -0,0 +1,9 @@
struct VS_OUTPUT
{
float4 Position : POSITION; // vertex position
float4 Diffuse : COLOR0; // vertex diffuse color
};
float4 Main(VS_OUTPUT In) : COLOR {
return float4(1, 1, 1, 1) - In.Diffuse;
}

3
main.vsh
View File

@ -16,7 +16,8 @@ VS_OUTPUT Main(VS_INPUT Input)
{
VS_OUTPUT Output;
Output.Position = mul(float4(Input.Position, 1.0), mWorldViewProj);
//Output.Position = mul(float4(Input.Position, 1.0), mWorldViewProj);
Output.Position = float4(Input.Position, 1.0);
Output.Diffuse = Input.Color;
return Output;