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use colorwritemask better

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This commit is contained in:
cxgeorge 2002-05-14 21:25:16 +00:00
parent a31a99d91b
commit 7d20aff6f6
2 changed files with 12 additions and 6 deletions
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11
panda/src/dxgsg8/dxGraphicsStateGuardian8.I
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@ -157,7 +157,16 @@ INLINE void DXGraphicsStateGuardian::
set_color_writemask(UINT color_writemask) { set_color_writemask(UINT color_writemask) {
if (_color_writemask != color_writemask) { if (_color_writemask != color_writemask) {
_color_writemask = color_writemask; _color_writemask = color_writemask;
scrn.pD3DDevice->SetRenderState(D3DRS_COLORWRITEENABLE, (DWORD)color_writemask); if(scrn.d3dcaps.PrimitiveMiscCaps & D3DPMISCCAPS_COLORWRITEENABLE) {
// only newer HW supports this rstate
scrn.pD3DDevice->SetRenderState(D3DRS_COLORWRITEENABLE, (DWORD)color_writemask);
} else {
assert((color_writemask==0x0)||(color_writemask==0xFFFFFFFF));
if(color_writemask==0x0) {
enable_blend(true);
call_dxBlendFunc(D3DBLEND_ZERO, D3DBLEND_ONE);
} else enable_blend(false);
}
} }
} }

7
panda/src/dxgsg8/dxGraphicsStateGuardian8.cxx
View File

@ -4381,13 +4381,10 @@ void DXGraphicsStateGuardian::
set_blend_mode(ColorWriteAttrib::Mode color_write_mode, set_blend_mode(ColorWriteAttrib::Mode color_write_mode,
ColorBlendAttrib::Mode color_blend_mode, ColorBlendAttrib::Mode color_blend_mode,
TransparencyAttrib::Mode transparency_mode) { TransparencyAttrib::Mode transparency_mode) {
// If color_write_mode is off, we disable writing to the color using // If color_write_mode is off, we disable writing to the colorbuffer.
// blending. I don't know if it is possible in DX to disable color
// outside of a blend mode.
if (color_write_mode == ColorWriteAttrib::M_off) { if (color_write_mode == ColorWriteAttrib::M_off) {
enable_blend(true);
enable_alpha_test(false); enable_alpha_test(false);
call_dxBlendFunc(D3DBLEND_ZERO, D3DBLEND_ONE); set_color_writemask(0x0);
return; return;
} }