void DXDirectionalLight::BlurShadowMap(LPDIRECT3DDEVICE9 device, LPD3DXEFFECT effect)
{
if( !shadowmap || !blur || !blurdeclforpointfordirectional || !needsblur )
return;
float blurvertices[36] =
{
-0.5f, -0.5f, 0, 1, 0, 0,
(float)shadowsize - 0.5f, -0.5f, 0, 1, 1, 0,
-0.5f, (float)shadowsize - 0.5f, 0, 1, 0, 1,
-0.5f, (float)shadowsize - 0.5f, 0, 1, 0, 1,
(float)shadowsize - 0.5f, -0.5f, 0, 1, 1, 0,
(float)shadowsize - 0.5f, (float)shadowsize - 0.5f, 0, 1, 1, 1
};
LPDIRECT3DSURFACE9 surface = NULL;
D3DXVECTOR4 texelsize(1.0f / shadowsize, 0, 0, 0);
UINT stride = 6 * sizeof(float);
device->SetVertexDeclaration(blurdeclforpointfordirectional);
// x
blur->GetSurfaceLevel(0, &surface);
effect->SetVector("texelSize", &texelsize);
effect->CommitChanges();
device->SetRenderTarget(0, surface);
device->Clear(0, NULL, D3DCLEAR_TARGET, 0xff000000, 1.0f, 0);
device->SetTexture(0, shadowmap);
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, blurvertices, stride);
surface->Release();
std::swap(texelsize.x, texelsize.y);
// y
shadowmap->GetSurfaceLevel(0, &surface);
effect->SetVector("texelSize", &texelsize);
effect->CommitChanges();
device->SetRenderTarget(0, surface);
device->Clear(0, NULL, D3DCLEAR_TARGET, 0xff000000, 1.0f, 0);
device->SetTexture(0, blur);
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, blurvertices, stride);
surface->Release();
if( shadowtype == Static )
needsblur = false;
}
//*************************************************************************************************************
void BlurTexture(LPDIRECT3DTEXTURE9 tex)
{
LPDIRECT3DSURFACE9 surface = NULL;
LPDIRECT3DSURFACE9 blursurface = NULL;
LPDIRECT3DTEXTURE9 blurtex = NULL;
D3DXVECTOR4 texelsize(1.0f / SHADOWMAP_SIZE, 0, 0, 0);
D3DSURFACE_DESC desc;
tex->GetLevelDesc(0, &desc);
if( desc.Format == D3DFMT_A8R8G8B8 )
blurtex = blurARGB8; // for convolution
else
blurtex = blurRGBA32F; // for others
blurtex->GetSurfaceLevel(0, &blursurface);
tex->GetSurfaceLevel(0, &surface);
device->SetRenderTarget(0, blursurface);
device->SetTexture(0, tex);
device->SetVertexDeclaration(vertexdecl);
boxblur5x5->SetVector("texelSize", &texelsize);
boxblur5x5->Begin(NULL, 0);
boxblur5x5->BeginPass(0);
{
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, &vertices[0], 6 * sizeof(float));
std::swap(texelsize.x, texelsize.y);
boxblur5x5->SetVector("texelSize", &texelsize);
boxblur5x5->CommitChanges();
device->SetRenderTarget(0, surface);
device->SetTexture(0, blurtex);
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, &vertices[0], 6 * sizeof(float));
}
boxblur5x5->EndPass();
boxblur5x5->End();
surface->Release();
blursurface->Release();
}
//*************************************************************************************************************
void Render(float alpha, float elapsedtime)
{
static float time = 0;
D3DXMATRIX inv;
D3DXVECTOR3 axis(0, 1, 0);
D3DXVECTOR4 texelsize(1.0f / (float)screenwidth, 1.0f / (float)screenheight, 0, 1);
LPDIRECT3DSURFACE9 oldtarget = NULL;
time += elapsedtime;
D3DXMatrixRotationAxis(&inv, &axis, time);
D3DXMatrixScaling(&world, 0.3f, 0.3f, 0.3f);
//D3DXMatrixScaling(&world, 0.6f, 0.6f, 0.6f);
D3DXMatrixMultiply(&world, &world, &inv);
D3DXMatrixInverse(&inv, NULL, &world);
device->SetTexture(0, texture);
device->SetTexture(1, intensity);
effect->SetMatrix("matWorld", &world);
effect->SetMatrix("matWorldInv", &inv);
effect->SetMatrix("matView", &view);
effect->SetMatrix("matProj", &proj);
if( useedgedetect )
{
device->GetRenderTarget(0, &oldtarget);
device->SetRenderTarget(0, colorsurface);
device->SetRenderTarget(1, normalsurface);
}
device->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER|D3DCLEAR_STENCIL, 0xff6694ed, 1.0f, 0);
if( SUCCEEDED(device->BeginScene()) )
{
// draw scene + normals/depth
effect->SetTechnique("celshading");
effect->Begin(NULL, 0);
effect->BeginPass(0);
{
mesh->DrawSubset(0);
}
effect->EndPass();
effect->End();
if( useedgedetect )
{
// edge detection
device->SetVertexDeclaration(vertexdecl);
device->SetRenderTarget(0, edgesurface);
device->SetRenderTarget(1, NULL);
device->SetTexture(0, normaltarget);
device->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, 0xff6694ed, 1.0f, 0);
effect->SetTechnique("edgedetect");
effect->SetVector("texelSize", &texelsize);
effect->Begin(NULL, 0);
effect->BeginPass(0);
{
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, vertices, sizeof(D3DXVECTOR4) + sizeof(D3DXVECTOR2));
}
effect->EndPass();
effect->End();
// put together
device->SetRenderTarget(0, oldtarget);
device->SetTexture(0, colortarget);
device->SetTexture(2, edgetarget);
device->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, 0xff6694ed, 1.0f, 0);
oldtarget->Release();
effect->SetTechnique("final");
effect->Begin(NULL, 0);
effect->BeginPass(0);
{
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, vertices, sizeof(D3DXVECTOR4) + sizeof(D3DXVECTOR2));
}
effect->EndPass();
effect->End();
}
else
{
D3DXMATRIX offproj;
// use the stencil buffer
device->SetRenderState(D3DRS_COLORWRITEENABLE, 0);
device->SetRenderState(D3DRS_ZWRITEENABLE, FALSE);
device->SetRenderState(D3DRS_STENCILENABLE, TRUE);
device->SetRenderState(D3DRS_ZENABLE, FALSE);
device->SetRenderState(D3DRS_STENCILFUNC, D3DCMP_ALWAYS);
device->SetRenderState(D3DRS_STENCILREF, 1);
device->SetRenderState(D3DRS_STENCILPASS, D3DSTENCILOP_REPLACE);
device->SetTransform(D3DTS_WORLD, &world);
device->SetTransform(D3DTS_VIEW, &view);
float thickness = 3.5f;
// render object 4 times with offseted frustum
for( float i = -thickness; i < thickness + 1; i += 2 * thickness )
{
for( float j = -thickness; j < thickness + 1; j += 2 * thickness )
{
D3DXMatrixTranslation(&offproj, i / (float)screenwidth, j / (float)screenheight, 0);
D3DXMatrixMultiply(&offproj, &proj, &offproj);
device->SetTransform(D3DTS_PROJECTION, &offproj);
mesh->DrawSubset(0);
}
}
// erase area in the center
device->SetRenderState(D3DRS_STENCILREF, 0);
device->SetTransform(D3DTS_PROJECTION, &proj);
mesh->DrawSubset(0);
// now render outlines
device->SetRenderState(D3DRS_COLORWRITEENABLE, D3DCOLORWRITEENABLE_RED|D3DCOLORWRITEENABLE_GREEN|D3DCOLORWRITEENABLE_BLUE|D3DCOLORWRITEENABLE_ALPHA);
device->SetRenderState(D3DRS_STENCILFUNC, D3DCMP_NOTEQUAL);
device->SetRenderState(D3DRS_STENCILPASS, D3DSTENCILOP_KEEP);
device->SetRenderState(D3DRS_STENCILFAIL, D3DSTENCILOP_KEEP);
device->SetFVF(D3DFVF_XYZRHW|D3DFVF_TEX1);
device->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
device->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_CONSTANT);
device->SetTextureStageState(0, D3DTSS_CONSTANT, 0);
{
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, vertices, sizeof(D3DXVECTOR4) + sizeof(D3DXVECTOR2));
}
device->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE);
device->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
device->SetRenderState(D3DRS_ZENABLE, TRUE);
device->SetRenderState(D3DRS_ZWRITEENABLE, TRUE);
device->SetRenderState(D3DRS_STENCILENABLE, FALSE);
}
device->SetTexture(2, NULL);
// render text
device->SetFVF(D3DFVF_XYZRHW|D3DFVF_TEX1);
device->SetRenderState(D3DRS_ZENABLE, FALSE);
device->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE);
device->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
device->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
device->SetTexture(0, text);
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, textvertices, 6 * sizeof(float));
device->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
device->SetRenderState(D3DRS_ZENABLE, TRUE);
device->SetTexture(0, NULL);
device->EndScene();
}
device->Present(NULL, NULL, NULL, NULL);
}
//*************************************************************************************************************
void Render(float alpha, float elapsedtime)
{
D3DXMATRIX view, proj;
D3DXMATRIX inv, vp, tmp;
D3DXMATRIX lightview, lightproj, lightvp;
D3DXVECTOR2 orient = cameraangle.smooth(alpha);
D3DXVECTOR4 lightpos(0, 0, -5, 0);
D3DXVECTOR3 look(0, 0.5f, 0), up(0, 1, 0);
D3DXVECTOR3 eye(0, 0, -5.2f);
D3DXVECTOR4 clipplanes(0, 0, 0, 0);
D3DXVECTOR4 texelsize(1.0f / SHADOWMAP_SIZE, 1.0f / SHADOWMAP_SIZE, 0, 0);
// setup camera
D3DXMatrixRotationYawPitchRoll(&tmp, orient.x, orient.y, 0);
D3DXVec3TransformCoord(&eye, &eye, &tmp);
D3DXMatrixLookAtLH(&view, &eye, &look, &up);
D3DXMatrixPerspectiveFovLH(&proj, D3DX_PI / 4, (float)screenwidth / (float)screenheight, 0.1f, 20);
D3DXMatrixMultiply(&vp, &view, &proj);
// setup light
orient = lightangle.smooth(alpha);
look = D3DXVECTOR3(0, 0, 0);
D3DXMatrixRotationYawPitchRoll(&tmp, orient.x, orient.y, 0);
D3DXVec4Transform(&lightpos, &lightpos, &tmp);
D3DXMatrixLookAtLH(&lightview, (D3DXVECTOR3*)&lightpos, &look, &up);
DXFitToBox(lightproj, clipplanes, lightview, scenebb);
D3DXMatrixMultiply(&lightvp, &lightview, &lightproj);
if( SUCCEEDED(device->BeginScene()) )
{
switch( shadowtech )
{
case 0:
RenderWithPCF(vp, eye, lightview, lightproj, lightpos, clipplanes, D3DXVECTOR4(0, 0, 0, 0));
break;
case 1:
RenderWithPCF(vp, eye, lightview, lightproj, lightpos, clipplanes, texelsize);
break;
case 2:
RenderWithIrregularPCF(vp, eye, lightview, lightproj, lightpos, clipplanes, texelsize);
break;
case 3:
RenderWithVariance(vp, eye, lightview, lightproj, lightpos, clipplanes);
break;
case 4:
RenderWithConvolution(vp, eye, lightview, lightproj, lightpos, clipplanes);
break;
case 5:
RenderWithExponential(vp, eye, lightview, lightproj, lightpos, clipplanes);
break;
case 6:
RenderWithExponentialVariance(vp, eye, lightview, lightproj, lightpos, clipplanes);
break;
case 7:
RenderWithPCSS(vp, eye, lightview, lightproj, lightpos, clipplanes, texelsize);
break;
default:
device->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, 0xff6694ed, 1.0f, 0);
break;
}
// render text
device->SetFVF(D3DFVF_XYZRHW|D3DFVF_TEX1);
device->SetRenderState(D3DRS_ZENABLE, FALSE);
device->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE);
device->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
device->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
device->SetTexture(0, text);
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, textvertices, 6 * sizeof(float));
device->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
device->SetRenderState(D3DRS_ZENABLE, TRUE);
device->EndScene();
}
device->Present(NULL, NULL, NULL, NULL);
}
void RenderLightShafts(const D3DXMATRIX& view, const D3DXMATRIX& proj, const D3DXVECTOR3& eye, const D3DXVECTOR4& lightpos)
{
D3DXMATRIX world;
D3DXVECTOR3 viewdir(view._13, view._23, view._33);
D3DXVECTOR3 lightdir;
D3DXVECTOR4 lightss;
D3DXVECTOR4 texelsize(1.0f / screenwidth, 1.0f / screenheight, 0, 1);
D3DXVec3Normalize(&lightdir, (D3DXVECTOR3*)&lightpos);
float exposure = min(max(D3DXVec3Dot(&viewdir, &lightdir), 0), 1);
lightss.x = eye.x + lightpos.x;
lightss.y = eye.y + lightpos.y;
lightss.z = eye.z + lightpos.z;
lightss.w = 1;
D3DXVec4Transform(&lightss, &lightss, &view);
D3DXVec4Transform(&lightss, &lightss, &proj);
lightss.x = (1.0f + lightss.x / lightss.w) * 0.5f;
lightss.y = (1.0f - lightss.y / lightss.w) * 0.5f;
device->SetRenderTarget(0, occludersurf);
device->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, 0x68686868, 1.0f, 0);
D3DXMatrixScaling(&world, 6, 6, 6);
world._42 = -2;
device->SetTransform(D3DTS_WORLD, &world);
device->SetTransform(D3DTS_VIEW, &view);
device->SetTransform(D3DTS_PROJECTION, &proj);
palm->DrawSubset(0, DXObject::Opaque);
palm->DrawSubset(1, DXObject::Opaque);
device->SetVertexDeclaration(quaddecl);
device->SetRenderState(D3DRS_ZENABLE, FALSE);
// first blur
godray->SetTechnique("godray");
godray->SetVector("lightPos", (D3DXVECTOR4*)&lightss);
godray->SetFloat("exposure", exposure);
device->SetRenderTarget(0, blursurf);
godray->Begin(0, 0);
godray->BeginPass(0);
{
device->SetTexture(0, occluders);
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, quadvertices, 6 * sizeof(float));
}
godray->EndPass();
godray->End();
// second blur
godray->SetTechnique("blur");
godray->SetVector("texelSize", &texelsize);
godray->SetVector("lightPos", (D3DXVECTOR4*)&lightss);
device->SetRenderTarget(0, occludersurf);
godray->Begin(0, 0);
godray->BeginPass(0);
{
device->SetTexture(0, blurtex);
device->DrawPrimitiveUP(D3DPT_TRIANGLELIST, 2, quadvertices, 6 * sizeof(float));
}
godray->EndPass();
godray->End();
device->SetRenderState(D3DRS_ZENABLE, TRUE);
}