im desperate
Author
Using texture stages how do i set it up so the color comes from stage 0 but the alpha comes from stage 1
You could do something like this:
pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1, D3DTA_CURRENT);
pd3dDevice->SetTextureStageState(1, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
pd3dDevice->SetTextureStageState(1, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
This will take the result from the color op in stage 0, (which by default is to modulate diffuse with texture) and use it with the alpha value from the texture in stage 1.
[edited by - Zook on January 23, 2004 7:47:53 AM]
pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1, D3DTA_CURRENT);
pd3dDevice->SetTextureStageState(1, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
pd3dDevice->SetTextureStageState(1, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
This will take the result from the color op in stage 0, (which by default is to modulate diffuse with texture) and use it with the alpha value from the texture in stage 1.
[edited by - Zook on January 23, 2004 7:47:53 AM]
Author
Thats exactly what im doing maybe im not setting the right render states
this is what im doing
this is what im doing
HRESULT CFrameWorkApplication::RenderTerrainTexture(){ HRESULT hr; LPD3DXRENDERTOSURFACE rendertargetsurface; IDirect3DSurface8 *newsurface; D3DSURFACE_DESC desc; terrRenderTarget->GetSurfaceLevel(0, &newsurface); newsurface->GetDesc(&desc); if(FAILED(hr = D3DXCreateRenderToSurface(d3ddevice, desc.Width, desc.Height, D3DFMT_A8R8G8B8, FALSE, D3DFMT_UNKNOWN, &rendertargetsurface))) { return hr; } rendertargetsurface->BeginScene(newsurface, NULL); d3ddevice->SetStreamSource(0, rendertargetVB, sizeof(rendertargetvertex)); d3ddevice->SetVertexShader(RENDERTARGET_VERTEX); d3ddevice->Clear( 0L, NULL, D3DCLEAR_TARGET,D3DCOLOR_ARGB(255,0,0,0), 0.0f, 0L );\ d3ddevice->SetRenderState(D3DRS_ZWRITEENABLE,false); d3ddevice->SetRenderState(D3DRS_LIGHTING,false); d3ddevice->SetRenderState(D3DRS_FILLMODE, D3DFILL_SOLID ); d3ddevice->SetRenderState(D3DRS_SRCBLEND,D3DBLEND_SRCALPHA); d3ddevice->SetRenderState(D3DRS_DESTBLEND,D3DBLEND_INVSRCALPHA); d3ddevice->SetRenderState(D3DRS_ALPHABLENDENABLE,true); d3ddevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_SELECTARG1); d3ddevice->SetTextureStageState(1, D3DTSS_COLORARG1, D3DTA_TEXTURE); d3ddevice->SetTextureStageState(0, D3DTSS_COLOROP,D3DTOP_SELECTARG1); d3ddevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_CURRENT); d3ddevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1); d3ddevice->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE); d3ddevice->SetTexture(1,terrTexture[0]); d3ddevice->SetTexture(0,terrBlendMap[0]); d3ddevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,2); d3ddevice->SetTexture(1,terrTexture[1]); d3ddevice->SetTexture(0,terrBlendMap[1]); d3ddevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,2); d3ddevice->SetTexture(1,terrTexture[2]); d3ddevice->SetTexture(0,terrBlendMap[2]); d3ddevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,2); d3ddevice->SetTexture(1,terrTexture[3]); d3ddevice->SetTexture(0,terrBlendMap[3]); d3ddevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,2); rendertargetsurface->EndScene(); //Release the rendertosurface SAFE_RELEASE(rendertargetsurface); SAFE_RELEASE(newsurface); return S_OK;}
Do you have a texture and then alpha that your getting from a black and white texture? You may want to combine them into one TGA. That way you don't waste a texture blending stage and it's so much easier too.
www.opticuslabs.com/alphatexgen
~Wave
[edited by - Wavewash on January 23, 2004 1:01:37 PM]
www.opticuslabs.com/alphatexgen
~Wave
[edited by - Wavewash on January 23, 2004 1:01:37 PM]
Add this..
d3ddevice->SetTextureStageState(1, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
d3ddevice->SetTextureStageState(1, D3DTSS_ALPHAARG1, D3DTA_CURRENT);
You need that to transfer the alpha to the end of the texture cascade, otherwise the alpha will just get lost.
d3ddevice->SetTextureStageState(1, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
d3ddevice->SetTextureStageState(1, D3DTSS_ALPHAARG1, D3DTA_CURRENT);
You need that to transfer the alpha to the end of the texture cascade, otherwise the alpha will just get lost.
Author
For some reason there is no blending happening at all they just overrite each other even if im just plotting grass its either drawing all or nothing. So my guess if im missing something that im too stupid to see
if any one want the code for the engine i can email it its only 300k with the 4 textures it needs
if any one want the code for the engine i can email it its only 300k with the 4 textures it needs
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