Testing codes and codes to achieve the result Depth-pass stencil shadow volume rendering, which certainly has not worked,
but worked the code to use the 2-Sided stencil.
It works well and fast that the system of Shadows zPass and zFail but is bug something to ¿infinity?.
The code:
CD3D9Driver.cpp
Code: Select all
//! sets the needed renderstates
void CD3D9Driver::setRenderStatesStencilShadowMode(bool zfail)
{
if ((CurrentRenderMode != ERM_SHADOW_VOLUME_ZFAIL && CurrentRenderMode != ERM_SHADOW_VOLUME_ZPASS) ||
Transformation3DChanged)
{
// switch back the matrices
pID3DDevice->SetTransform(D3DTS_VIEW, (D3DMATRIX*)((void*)&Matrices[ETS_VIEW]));
pID3DDevice->SetTransform(D3DTS_WORLD, (D3DMATRIX*)((void*)&Matrices[ETS_WORLD]));
pID3DDevice->SetTransform(D3DTS_PROJECTION, (D3DMATRIX*)((void*)&Matrices[ETS_PROJECTION]));
Transformation3DChanged = false;
setTexture(0,0);
setTexture(1,0);
setTexture(2,0);
setTexture(3,0);
pID3DDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_DISABLE);
pID3DDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
pID3DDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_DISABLE);
pID3DDevice->SetTextureStageState(1, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
pID3DDevice->SetTextureStageState(2, D3DTSS_COLOROP, D3DTOP_DISABLE);
pID3DDevice->SetTextureStageState(2, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
pID3DDevice->SetTextureStageState(3, D3DTSS_COLOROP, D3DTOP_DISABLE);
pID3DDevice->SetTextureStageState(3, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
pID3DDevice->SetFVF(D3DFVF_XYZ);
LastVertexType = (video::E_VERTEX_TYPE)(-1);
// Disable z-buffer writes and enable the stencil-buffer
pID3DDevice->SetRenderState( D3DRS_ZWRITEENABLE, FALSE );
pID3DDevice->SetRenderState( D3DRS_STENCILENABLE, TRUE );
// Dont bother with interpolating color
pID3DDevice->SetRenderState( D3DRS_SHADEMODE, D3DSHADE_FLAT );
// unset last 3d material
if (CurrentRenderMode == ERM_3D &&
Material.MaterialType >= 0 && Material.MaterialType < (s32)MaterialRenderers.size())
MaterialRenderers[Material.MaterialType].Renderer->OnUnsetMaterial();
}
// Set up stencil compare fuction, reference value, and masks.
pID3DDevice->SetRenderState( D3DRS_STENCILFUNC, D3DCMP_ALWAYS );
pID3DDevice->SetRenderState( D3DRS_STENCILZFAIL, D3DSTENCILOP_KEEP );
pID3DDevice->SetRenderState( D3DRS_STENCILFAIL, D3DSTENCILOP_KEEP );
// If z-test passes, inc/decrement stencil buffer value
pID3DDevice->SetRenderState( D3DRS_STENCILREF, 0x1 );
pID3DDevice->SetRenderState( D3DRS_STENCILMASK, 0xffffffff );
pID3DDevice->SetRenderState( D3DRS_STENCILWRITEMASK, 0xffffffff );
pID3DDevice->SetRenderState( D3DRS_STENCILPASS, D3DSTENCILOP_INCR );
// Make sure that no pixels get drawn to the frame buffer
pID3DDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, TRUE);
pID3DDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_ZERO );
pID3DDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_ONE );
// With 2-sided stencil, we can avoid rendering twice:
pID3DDevice->SetRenderState( D3DRS_TWOSIDEDSTENCILMODE, TRUE );
pID3DDevice->SetRenderState( D3DRS_CCW_STENCILFUNC, D3DCMP_ALWAYS );
pID3DDevice->SetRenderState( D3DRS_CCW_STENCILZFAIL, D3DSTENCILOP_KEEP );
pID3DDevice->SetRenderState( D3DRS_CCW_STENCILFAIL, D3DSTENCILOP_KEEP );
pID3DDevice->SetRenderState( D3DRS_CCW_STENCILPASS, D3DSTENCILOP_DECR );
pID3DDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
CurrentRenderMode = zfail ? ERM_SHADOW_VOLUME_ZFAIL : ERM_SHADOW_VOLUME_ZPASS;
}Code: Select all
//! volume. Then, use IVideoDriver::drawStencilShadow() to visualize the shadow.
void CD3D9Driver::drawStencilShadowVolume(const core::vector3df* triangles, s32 count, bool zfail)
{
setRenderStatesStencilShadowMode(zfail);
pID3DDevice->DrawPrimitiveUP(D3DPT_TRIANGLELIST, count / 3, triangles, sizeof(core::vector3df));
pID3DDevice->SetRenderState( D3DRS_TWOSIDEDSTENCILMODE, FALSE );
}I leave the address of the page.
Depth-pass stencil shadow volume rendering
http://www.gamedev.net/reference/articl ... le2019.asp