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gsdx-ogl: implement previous DATE optimization in a single shader pass 

Faster :) Reduce further the cost of accurate date

The optimization will clear the stencil to 1. So all pixels will have a
single sample that pass both the depth & stencil test. No primitive
overlaps So the destination alpha test can be done directly in the
shader.
This commit is contained in:
Gregory Hainaut 2016-05-15 17:44:40 +02:00
parent 3ab12cef2f
commit e776118de9
1 changed files with 14 additions and 2 deletions
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16
plugins/GSdx/GSRendererOGL.cpp
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@ -658,6 +658,7 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour
bool DATE = m_context->TEST.DATE && m_context->FRAME.PSM != PSM_PSMCT24;
bool DATE_GL42 = false;
bool DATE_GL45 = false;
bool DATE_one = false;
bool require_barrier = false; // For accurate option
m_unsafe_fbmask = false;
@ -828,11 +829,11 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour
if (m_context->TEST.DATM && m_vt.m_alpha.max < 128) {
// Only first pixel (write 0) will pass (alpha is 1)
GL_PERF("Fast DATE with alpha %d-%d", m_vt.m_alpha.min, m_vt.m_alpha.max);
om_dssel.date_one = 1;
DATE_one = true;
} else if (!m_context->TEST.DATM && m_vt.m_alpha.min >= 128) {
// Only first pixel (write 1) will pass (alpha is 0)
GL_PERF("Fast DATE with alpha %d-%d", m_vt.m_alpha.min, m_vt.m_alpha.max);
om_dssel.date_one = 1;
DATE_one = true;
} else if ((m_vt.m_primclass == GS_SPRITE_CLASS && m_drawlist.size() < 50) || (m_index.tail < 100)) {
// texture barrier will split the draw call into n draw call. It is very efficient for
// few primitive draws. Otherwise it sucks.
@ -852,6 +853,10 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour
}
}
}
// Will save my life !
ASSERT(!(DATE_GL45 && DATE_one));
ASSERT(!(DATE_GL42 && DATE_one));
ASSERT(!(DATE_GL42 && DATE_GL45));
}
// Blend
@ -880,6 +885,8 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour
// Create an r32ui image that will containt primitive ID
if (DATE_GL42) {
dev->InitPrimDateTexture(rt, dRect);
} else if (DATE_one) {
dev->ClearStencil(ds, 1);
} else {
GSVector4 src = GSVector4(dRect) / GSVector4(rtsize.x, rtsize.y).xyxy();
GSVector4 dst = src * 2.0f - 1.0f;
@ -981,6 +988,11 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour
if (DATE_GL45) {
ps_sel.date = 5 + m_context->TEST.DATM;
} else if (DATE_one) {
glTextureBarrier();
ps_sel.date = 5 + m_context->TEST.DATM;
om_dssel.date = 1;
om_dssel.date_one = 1;
} else if (DATE) {
if (DATE_GL42)
ps_sel.date = 1 + m_context->TEST.DATM;