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Use a brute force approach to test for Dual source blend support.

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Sorry for a direct commit to the main branch but i need fast feedback, and i don't want to leave problematic code in the main branch for a long time.
if this approach does not work for the drivers with problems will transform dual source blend to an option in the D3D9 backend.
I appreciate the help of the people that tested my last commit and thanks to neobrain for pointing this solution.
This commit is contained in:
Rodolfo Bogado
2013-03-31 20:02:13 -03:00
parent aabd8ce664
commit 45651098f6
3 changed files with 70 additions and 40 deletions
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51
Source/Plugins/Plugin_VideoDX9/Src/Render.cpp
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@ -663,16 +663,16 @@ void Renderer::SetBlendMode(bool forceUpdate)
bool target_has_alpha = bpmem.zcontrol.pixel_format == PIXELFMT_RGBA6_Z24;
//bDstAlphaPass is taked in account because the ability of disabling alpha composition is
//really usefull for debuging shader and blending errors
bool useDstAlpha = !g_ActiveConfig.bDstAlphaPass && bpmem.dstalpha.enable && bpmem.blendmode.alphaupdate && target_has_alpha;
bool useDualSource = useDstAlpha && g_ActiveConfig.backend_info.bSupportsDualSourceBlend;
bool use_DstAlpha = !g_ActiveConfig.bDstAlphaPass && bpmem.dstalpha.enable && bpmem.blendmode.alphaupdate && target_has_alpha;
bool use_DualSource = use_DstAlpha && g_ActiveConfig.backend_info.bSupportsDualSourceBlend;
const D3DBLEND d3dSrcFactors[8] =
{
D3DBLEND_ZERO,
D3DBLEND_ONE,
D3DBLEND_DESTCOLOR,
D3DBLEND_INVDESTCOLOR,
(useDualSource) ? D3DBLEND_SRCCOLOR2 : D3DBLEND_SRCALPHA,
(useDualSource) ? D3DBLEND_INVSRCCOLOR2 : D3DBLEND_INVSRCALPHA,
(use_DualSource) ? D3DBLEND_SRCCOLOR2 : D3DBLEND_SRCALPHA,
(use_DualSource) ? D3DBLEND_INVSRCCOLOR2 : D3DBLEND_INVSRCALPHA,
(target_has_alpha) ? D3DBLEND_DESTALPHA : D3DBLEND_ONE,
(target_has_alpha) ? D3DBLEND_INVDESTALPHA : D3DBLEND_ZERO
};
@ -682,8 +682,8 @@ void Renderer::SetBlendMode(bool forceUpdate)
D3DBLEND_ONE,
D3DBLEND_SRCCOLOR,
D3DBLEND_INVSRCCOLOR,
(useDualSource) ? D3DBLEND_SRCCOLOR2 : D3DBLEND_SRCALPHA,
(useDualSource) ? D3DBLEND_INVSRCCOLOR2 : D3DBLEND_INVSRCALPHA,
(use_DualSource) ? D3DBLEND_SRCCOLOR2 : D3DBLEND_SRCALPHA,
(use_DualSource) ? D3DBLEND_INVSRCCOLOR2 : D3DBLEND_INVSRCALPHA,
(target_has_alpha) ? D3DBLEND_DESTALPHA : D3DBLEND_ONE,
(target_has_alpha) ? D3DBLEND_INVDESTALPHA : D3DBLEND_ZERO
};
@ -696,7 +696,7 @@ void Renderer::SetBlendMode(bool forceUpdate)
bool blend_enable = bpmem.blendmode.subtract || bpmem.blendmode.blendenable;
D3D::SetRenderState(D3DRS_ALPHABLENDENABLE, blend_enable);
D3D::SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, blend_enable);
D3D::SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, blend_enable && g_ActiveConfig.backend_info.bSupportsSeparateAlphaFunction);
if (blend_enable)
{
D3DBLENDOP op = D3DBLENDOP_ADD;
@ -711,24 +711,27 @@ void Renderer::SetBlendMode(bool forceUpdate)
D3D::SetRenderState(D3DRS_BLENDOP, op);
D3D::SetRenderState(D3DRS_SRCBLEND, d3dSrcFactors[srcidx]);
D3D::SetRenderState(D3DRS_DESTBLEND, d3dDestFactors[dstidx]);
if (useDualSource)
{
op = D3DBLENDOP_ADD;
srcidx = GX_BL_ONE;
dstidx = GX_BL_ZERO;
}
else
if (g_ActiveConfig.backend_info.bSupportsSeparateAlphaFunction)
{
// we can't use D3DBLEND_DESTCOLOR or D3DBLEND_INVDESTCOLOR for source in alpha channel so use their alpha equivalent instead
if (srcidx == GX_BL_DSTCLR) srcidx = GX_BL_DSTALPHA;
if (srcidx == GX_BL_INVDSTCLR) srcidx = GX_BL_INVDSTALPHA;
// we can't use D3DBLEND_SRCCOLOR or D3DBLEND_INVSRCCOLOR for destination in alpha channel so use their alpha equivalent instead
if (dstidx == GX_BL_SRCCLR) dstidx = GX_BL_SRCALPHA;
if (dstidx == GX_BL_INVSRCCLR) dstidx = GX_BL_INVSRCALPHA;
}
D3D::SetRenderState(D3DRS_BLENDOPALPHA, op);
D3D::SetRenderState(D3DRS_SRCBLENDALPHA, d3dSrcFactors[srcidx]);
D3D::SetRenderState(D3DRS_DESTBLENDALPHA, d3dDestFactors[dstidx]);
if (use_DualSource)
{
op = D3DBLENDOP_ADD;
srcidx = GX_BL_ONE;
dstidx = GX_BL_ZERO;
}
else
{
// we can't use D3DBLEND_DESTCOLOR or D3DBLEND_INVDESTCOLOR for source in alpha channel so use their alpha equivalent instead
if (srcidx == GX_BL_DSTCLR) srcidx = GX_BL_DSTALPHA;
if (srcidx == GX_BL_INVDSTCLR) srcidx = GX_BL_INVDSTALPHA;
// we can't use D3DBLEND_SRCCOLOR or D3DBLEND_INVSRCCOLOR for destination in alpha channel so use their alpha equivalent instead
if (dstidx == GX_BL_SRCCLR) dstidx = GX_BL_SRCALPHA;
if (dstidx == GX_BL_INVSRCCLR) dstidx = GX_BL_INVSRCALPHA;
}
D3D::SetRenderState(D3DRS_BLENDOPALPHA, op);
D3D::SetRenderState(D3DRS_SRCBLENDALPHA, d3dSrcFactors[srcidx]);
D3D::SetRenderState(D3DRS_DESTBLENDALPHA, d3dDestFactors[dstidx]);
}
}
}