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This commit is contained in:
Zack Buhman 2025-12-31 17:32:29 -06:00
parent 8833c106a8
commit 96e0a3ab7b
2 changed files with 145 additions and 60 deletions
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153
main.cpp
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@ -12,7 +12,8 @@ ID3D10Texture2D * g_pDepthStencil = NULL;
ID3D10RenderTargetView * g_pRenderTargetView = NULL; ID3D10RenderTargetView * g_pRenderTargetView = NULL;
ID3D10DepthStencilView * g_pDepthStencilView = NULL; ID3D10DepthStencilView * g_pDepthStencilView = NULL;
ID3D10Effect * g_pEffect = NULL; ID3D10Effect * g_pEffect = NULL;
ID3D10EffectTechnique * g_pTechnique = NULL; ID3D10EffectTechnique * g_pTechniqueRender = NULL;
ID3D10EffectTechnique * g_pTechniqueRenderLight = NULL;
ID3D10InputLayout * g_pVertexLayout = NULL; ID3D10InputLayout * g_pVertexLayout = NULL;
ID3D10Buffer * g_pVertexBuffer = NULL; ID3D10Buffer * g_pVertexBuffer = NULL;
ID3D10Buffer * g_pIndexBuffer = NULL; ID3D10Buffer * g_pIndexBuffer = NULL;
@ -20,6 +21,9 @@ ID3D10Buffer * g_pIndexBuffer = NULL;
ID3D10EffectMatrixVariable * g_pWorldVariable = NULL; ID3D10EffectMatrixVariable * g_pWorldVariable = NULL;
ID3D10EffectMatrixVariable * g_pViewVariable = NULL; ID3D10EffectMatrixVariable * g_pViewVariable = NULL;
ID3D10EffectMatrixVariable * g_pProjectionVariable = NULL; ID3D10EffectMatrixVariable * g_pProjectionVariable = NULL;
ID3D10EffectVectorVariable * g_pLightDirVariable = NULL;
ID3D10EffectVectorVariable * g_pLightColorVariable = NULL;
ID3D10EffectVectorVariable * g_pOutputColorVariable = NULL;
D3DXMATRIX g_World1; D3DXMATRIX g_World1;
D3DXMATRIX g_World2; D3DXMATRIX g_World2;
D3DXMATRIX g_View; D3DXMATRIX g_View;
@ -32,7 +36,7 @@ void Render();
struct SimpleVertex { struct SimpleVertex {
D3DXVECTOR3 Pos; D3DXVECTOR3 Pos;
D3DXVECTOR4 Color; D3DXVECTOR3 Normal;
}; };
void print(LPCSTR fmt, ...) void print(LPCSTR fmt, ...)
@ -265,23 +269,27 @@ HRESULT InitDirect3DDevice()
return hr; return hr;
} }
g_pTechnique = g_pEffect->GetTechniqueByName("Render"); g_pTechniqueRender = g_pEffect->GetTechniqueByName("Render");
g_pTechniqueRenderLight = g_pEffect->GetTechniqueByName("RenderLight");
// variables // variables
g_pWorldVariable = g_pEffect->GetVariableByName("World")->AsMatrix(); g_pWorldVariable = g_pEffect->GetVariableByName("World")->AsMatrix();
g_pViewVariable = g_pEffect->GetVariableByName("View")->AsMatrix(); g_pViewVariable = g_pEffect->GetVariableByName("View")->AsMatrix();
g_pProjectionVariable = g_pEffect->GetVariableByName("Projection")->AsMatrix(); g_pProjectionVariable = g_pEffect->GetVariableByName("Projection")->AsMatrix();
g_pLightDirVariable = g_pEffect->GetVariableByName("vLightDir")->AsVector();
g_pLightColorVariable = g_pEffect->GetVariableByName("vLightColor")->AsVector();
g_pOutputColorVariable = g_pEffect->GetVariableByName("vOutputColor")->AsVector();
// input layout // input layout
D3D10_INPUT_ELEMENT_DESC layout[] = { D3D10_INPUT_ELEMENT_DESC layout[] = {
{"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT , 0, 0 , D3D10_INPUT_PER_VERTEX_DATA, 0}, {"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0 , D3D10_INPUT_PER_VERTEX_DATA, 0},
{"COLOR" , 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D10_INPUT_PER_VERTEX_DATA, 0}, {"NORMAL" , 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 12, D3D10_INPUT_PER_VERTEX_DATA, 0},
}; };
UINT numElements = (sizeof (layout)) / (sizeof (layout[0])); UINT numElements = (sizeof (layout)) / (sizeof (layout[0]));
D3D10_PASS_DESC passDesc; D3D10_PASS_DESC passDesc;
g_pTechnique->GetPassByIndex(0)->GetDesc(&passDesc); g_pTechniqueRender->GetPassByIndex(0)->GetDesc(&passDesc);
print("pass desc: `%s`\n", passDesc.Name); print("pass desc: `%s`\n", passDesc.Name);
hr = g_pd3dDevice->CreateInputLayout(layout, numElements, hr = g_pd3dDevice->CreateInputLayout(layout, numElements,
@ -301,17 +309,39 @@ HRESULT InitDirect3DDevice()
// vertex buffer // vertex buffer
SimpleVertex vertices[] = { SimpleVertex vertices[] = {
{ D3DXVECTOR3(-1.0f, 1.0f, -1.0f), D3DXVECTOR4(0.0f, 0.0f, 1.0f, 1.0f) }, { D3DXVECTOR3(-1.0f, 1.0f, -1.0f), D3DXVECTOR3( 0.0f, 1.0f, 0.0f) },
{ D3DXVECTOR3( 1.0f, 1.0f, -1.0f), D3DXVECTOR4(0.0f, 1.0f, 0.0f, 1.0f) }, { D3DXVECTOR3( 1.0f, 1.0f, -1.0f), D3DXVECTOR3( 0.0f, 1.0f, 0.0f) },
{ D3DXVECTOR3( 1.0f, 1.0f, 1.0f), D3DXVECTOR4(0.0f, 1.0f, 1.0f, 1.0f) }, { D3DXVECTOR3( 1.0f, 1.0f, 1.0f), D3DXVECTOR3( 0.0f, 1.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, 1.0f, 1.0f), D3DXVECTOR4(1.0f, 0.0f, 0.0f, 1.0f) }, { D3DXVECTOR3(-1.0f, 1.0f, 1.0f), D3DXVECTOR3( 0.0f, 1.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, -1.0f, -1.0f), D3DXVECTOR4(1.0f, 0.0f, 1.0f, 1.0f) },
{ D3DXVECTOR3( 1.0f, -1.0f, -1.0f), D3DXVECTOR4(1.0f, 1.0f, 0.0f, 1.0f) }, { D3DXVECTOR3(-1.0f, -1.0f, -1.0f), D3DXVECTOR3( 0.0f, -1.0f, 0.0f) },
{ D3DXVECTOR3( 1.0f, -1.0f, 1.0f), D3DXVECTOR4(1.0f, 1.0f, 1.0f, 1.0f) }, { D3DXVECTOR3( 1.0f, -1.0f, -1.0f), D3DXVECTOR3( 0.0f, -1.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, -1.0f, 1.0f), D3DXVECTOR4(0.0f, 0.0f, 0.0f, 1.0f) }, { D3DXVECTOR3( 1.0f, -1.0f, 1.0f), D3DXVECTOR3( 0.0f, -1.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, -1.0f, 1.0f), D3DXVECTOR3( 0.0f, -1.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, -1.0f, 1.0f), D3DXVECTOR3(-1.0f, 0.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, -1.0f, -1.0f), D3DXVECTOR3(-1.0f, 0.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, 1.0f, -1.0f), D3DXVECTOR3(-1.0f, 0.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, 1.0f, 1.0f), D3DXVECTOR3(-1.0f, 0.0f, 0.0f) },
{ D3DXVECTOR3( 1.0f, -1.0f, 1.0f), D3DXVECTOR3( 1.0f, 0.0f, 0.0f) },
{ D3DXVECTOR3( 1.0f, -1.0f, -1.0f), D3DXVECTOR3( 1.0f, 0.0f, 0.0f) },
{ D3DXVECTOR3( 1.0f, 1.0f, -1.0f), D3DXVECTOR3( 1.0f, 0.0f, 0.0f) },
{ D3DXVECTOR3( 1.0f, 1.0f, 1.0f), D3DXVECTOR3( 1.0f, 0.0f, 0.0f) },
{ D3DXVECTOR3(-1.0f, -1.0f, -1.0f), D3DXVECTOR3( 0.0f, 0.0f, -1.0f) },
{ D3DXVECTOR3( 1.0f, -1.0f, -1.0f), D3DXVECTOR3( 0.0f, 0.0f, -1.0f) },
{ D3DXVECTOR3( 1.0f, 1.0f, -1.0f), D3DXVECTOR3( 0.0f, 0.0f, -1.0f) },
{ D3DXVECTOR3(-1.0f, 1.0f, -1.0f), D3DXVECTOR3( 0.0f, 0.0f, -1.0f) },
{ D3DXVECTOR3(-1.0f, -1.0f, 1.0f), D3DXVECTOR3( 0.0f, 0.0f, 1.0f) },
{ D3DXVECTOR3( 1.0f, -1.0f, 1.0f), D3DXVECTOR3( 0.0f, 0.0f, 1.0f) },
{ D3DXVECTOR3( 1.0f, 1.0f, 1.0f), D3DXVECTOR3( 0.0f, 0.0f, 1.0f) },
{ D3DXVECTOR3(-1.0f, 1.0f, 1.0f), D3DXVECTOR3( 0.0f, 0.0f, 1.0f) },
}; };
int vertices_length = (sizeof (vertices)) / (sizeof (vertices[0]));
bd.Usage = D3D10_USAGE_DEFAULT; bd.Usage = D3D10_USAGE_DEFAULT;
bd.ByteWidth = (sizeof (SimpleVertex)) * 8; bd.ByteWidth = (sizeof (SimpleVertex)) * vertices_length;
bd.BindFlags = D3D10_BIND_VERTEX_BUFFER; bd.BindFlags = D3D10_BIND_VERTEX_BUFFER;
bd.CPUAccessFlags = 0; bd.CPUAccessFlags = 0;
bd.MiscFlags = 0; bd.MiscFlags = 0;
@ -330,23 +360,24 @@ HRESULT InitDirect3DDevice()
3,1,0, 3,1,0,
2,1,3, 2,1,3,
0,5,4,
1,5,0,
3,4,7,
0,4,3,
1,6,5,
2,6,1,
2,7,6,
3,7,2,
6,4,5, 6,4,5,
7,4,6, 7,4,6,
11,9,8,
10,9,11,
14,12,13,
15,12,14,
19,17,16,
18,17,19,
22,20,21,
23,20,22
}; };
int indices_length = (sizeof (indices)) / (sizeof (indices[0]));
bd.Usage = D3D10_USAGE_DEFAULT; bd.Usage = D3D10_USAGE_DEFAULT;
bd.ByteWidth = (sizeof (DWORD)) * 36; bd.ByteWidth = (sizeof (DWORD)) * indices_length;
bd.BindFlags = D3D10_BIND_INDEX_BUFFER; bd.BindFlags = D3D10_BIND_INDEX_BUFFER;
bd.CPUAccessFlags = 0; bd.CPUAccessFlags = 0;
bd.MiscFlags = 0; bd.MiscFlags = 0;
@ -384,7 +415,7 @@ HRESULT InitDirect3DDevice()
void Render() void Render()
{ {
static float t = 0.0f; static float t = 0.0f;
if (0) { if (1) {
t += (float)D3DX_PI * 0.0125f; t += (float)D3DX_PI * 0.0125f;
} else { } else {
static DWORD dwTimeStart = 0; static DWORD dwTimeStart = 0;
@ -397,44 +428,66 @@ void Render()
// first cube // first cube
D3DXMatrixRotationY(&g_World1, t); D3DXMatrixRotationY(&g_World1, t);
// second cube // lights
D3DXMATRIX mTranslate; D3DXVECTOR4 vLightDirs[2] = {
D3DXMATRIX mOrbit; D3DXVECTOR4(-0.577f, 0.577f, -0.577f, 1.0f),
D3DXMATRIX mSpin; D3DXVECTOR4(0.0f, 0.0f, -1.0f, 1.0f),
D3DXMATRIX mScale; };
D3DXMatrixRotationZ(&mSpin, -t); D3DXVECTOR4 vLightColors[2] = {
D3DXMatrixRotationY(&mOrbit, -t * 2.0f); D3DXVECTOR4(0.0f, 0.5f, 0.5f, 1.0f),
D3DXMatrixTranslation(&mTranslate, -4.0f, 0.0f, 0.0f); D3DXVECTOR4(0.5f, 0.0f, 0.0f, 1.0f)
D3DXMatrixScaling(&mScale, 0.3f, 0.3f, 0.3f); };
D3DXMatrixMultiply(&g_World2, &mScale, &mSpin); // rotate the second light around the origin
D3DXMatrixMultiply(&g_World2, &g_World2, &mTranslate); D3DXMATRIX mRotate;
D3DXMatrixMultiply(&g_World2, &g_World2, &mOrbit); D3DXVECTOR4 vOutDir;
D3DXMatrixRotationY(&mRotate, -2.0f * t);
D3DXVec3Transform(&vLightDirs[1], (D3DXVECTOR3 *)&vLightDirs[1], &mRotate);
D3DXMatrixRotationY(&mRotate, 0.4f * t);
D3DXVec3Transform(&vLightDirs[0], (D3DXVECTOR3 *)&vLightDirs[0], &mRotate);
// clear
float ClearColor[4] = { 0.0f, 0.125f, 0.6f, 1.0f }; float ClearColor[4] = { 0.0f, 0.125f, 0.6f, 1.0f };
g_pd3dDevice->ClearRenderTargetView(g_pRenderTargetView, ClearColor); g_pd3dDevice->ClearRenderTargetView(g_pRenderTargetView, ClearColor);
g_pd3dDevice->ClearDepthStencilView(g_pDepthStencilView, D3D10_CLEAR_DEPTH, 1.0f, 0); g_pd3dDevice->ClearDepthStencilView(g_pDepthStencilView, D3D10_CLEAR_DEPTH, 1.0f, 0);
// matrices
g_pViewVariable->SetMatrix((float *)&g_View); g_pViewVariable->SetMatrix((float *)&g_View);
g_pProjectionVariable->SetMatrix((float *)&g_Projection); g_pProjectionVariable->SetMatrix((float *)&g_Projection);
g_pWorldVariable->SetMatrix((float *)&g_World1);
D3D10_TECHNIQUE_DESC techDesc; // lights
g_pTechnique->GetDesc(&techDesc); g_pLightDirVariable->SetFloatVectorArray((float *)vLightDirs, 0, 2);
g_pLightColorVariable->SetFloatVectorArray((float *)vLightColors, 0, 2);
// render first cube // render first cube
g_pWorldVariable->SetMatrix((float *)&g_World1); D3D10_TECHNIQUE_DESC techDesc;
for(UINT p = 0; p < techDesc.Passes; p++) { g_pTechniqueRender->GetDesc(&techDesc);
g_pTechnique->GetPassByIndex(p)->Apply(0); for (UINT p = 0; p < techDesc.Passes; p++) {
g_pTechniqueRender->GetPassByIndex(p)->Apply(0);
g_pd3dDevice->DrawIndexed(36, 0, 0); g_pd3dDevice->DrawIndexed(36, 0, 0);
} }
// render second cube // render the lights
g_pWorldVariable->SetMatrix((float *)&g_World2); for (int m = 0; m < 2; m++) {
for(UINT p = 0; p < techDesc.Passes; p++) { D3DXMATRIX mLight;
g_pTechnique->GetPassByIndex(p)->Apply(0); D3DXMATRIX mLightScale;
D3DXVECTOR3 vLightPos = vLightDirs[m] * 4.0f;
D3DXMatrixTranslation( &mLight, vLightPos.x, vLightPos.y, vLightPos.z );
D3DXMatrixScaling( &mLightScale, 0.2f, 0.2f, 0.2f );
mLight = mLightScale * mLight;
g_pWorldVariable->SetMatrix((float *)&mLight);
g_pOutputColorVariable->SetFloatVector((float *)&vLightColors[m]);
g_pTechniqueRenderLight->GetDesc( &techDesc );
for (UINT p = 0; p < techDesc.Passes; p++) {
g_pTechniqueRenderLight->GetPassByIndex(p)->Apply(0);
g_pd3dDevice->DrawIndexed(36, 0, 0); g_pd3dDevice->DrawIndexed(36, 0, 0);
} }
}
// present
g_pSwapChain->Present(0, 0); g_pSwapChain->Present(0, 0);
} }

50
main.fx
View File

@ -2,25 +2,47 @@ matrix World;
matrix View; matrix View;
matrix Projection; matrix Projection;
struct VS_OUTPUT float4 vLightDir[2];
float4 vLightColor[2];
float4 vOutputColor;
struct VS_INPUT
{ {
float4 Pos: SV_POSITION; float4 Pos : POSITION;
float4 Color : COLOR0; float4 Normal : NORMAL;
}; };
VS_OUTPUT VS(float4 Pos : POSITION, float4 Color : COLOR) struct PS_INPUT
{ {
VS_OUTPUT output = (VS_OUTPUT)0; float4 Pos : SV_POSITION;
output.Pos = mul(Pos, World); float4 Normal : TEXCOORD0;
};
PS_INPUT VS(VS_INPUT input)
{
PS_INPUT output = (PS_INPUT)0;
output.Pos = mul(input.Pos, World);
output.Pos = mul(output.Pos, View); output.Pos = mul(output.Pos, View);
output.Pos = mul(output.Pos, Projection); output.Pos = mul(output.Pos, Projection);
output.Color = Color; output.Normal = mul(input.Normal, World);
return output; return output;
} }
float4 PS(VS_OUTPUT input) : SV_Target float4 PS(PS_INPUT input) : SV_Target
{ {
return input.Color; float4 finalColor = 0;
for (int i = 0; i < 2; i++) {
finalColor += saturate(dot((float3)vLightDir[i], input.Normal) * vLightColor[i]);
}
finalColor.a = 1;
return finalColor;
}
float4 PSSolid(PS_INPUT input) : SV_Target
{
return vOutputColor;
} }
technique10 Render technique10 Render
@ -32,3 +54,13 @@ technique10 Render
SetPixelShader(CompileShader(ps_4_0, PS())); SetPixelShader(CompileShader(ps_4_0, PS()));
} }
} }
technique10 RenderLight
{
pass P0
{
SetVertexShader(CompileShader(vs_4_0, VS()));
SetGeometryShader(NULL);
SetPixelShader(CompileShader(ps_4_0, PSSolid()));
}
}