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gsdx-ogl: don't use slow SW blend for nothing 

When A == B, coeff is 0 so <= 1
When C == 2, just check the value of coeff

Barely faster in accurate_blend = 2
This commit is contained in:
Gregory Hainaut 2015-06-04 09:54:07 +02:00
parent 85266abd71
commit c2e851b3a5
1 changed files with 2 additions and 1 deletions
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3
plugins/GSdx/GSRendererOGL.cpp
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@ -613,7 +613,8 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour
// Compute the blending equation to detect special case
int blend_sel = ((om_bsel.a * 3 + om_bsel.b) * 3 + om_bsel.c) * 3 + om_bsel.d;
int bogus_blend = GSDeviceOGL::m_blendMapD3D9[blend_sel].bogus;
bool sw_blending = (m_accurate_blend && (bogus_blend & A_MAX)) || acc_colclip_wrap || (m_accurate_blend > 1);
bool all_sw = !( (ALPHA.A == ALPHA.B) || (ALPHA.C == 2 && afix <= 1.002f) ) && (m_accurate_blend > 1);
bool sw_blending = (m_accurate_blend && (bogus_blend & A_MAX)) || acc_colclip_wrap || all_sw;
if (sw_blending && om_bsel.abe) {
GL_INS("!!! SW blending effect used (0x%x from sel %d) !!!", bogus_blend, blend_sel);