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gsdx tc: trick the texture cache to use a depth format for depth texture 

This way we avoid the rescaling of the depth buffer and texture allocation.
This commit is contained in:
Gregory Hainaut 2016-04-24 20:30:54 +02:00
parent 1960d51e60
commit ad08701cb1
2 changed files with 11 additions and 3 deletions
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4
plugins/GSdx/GSRendererOGL.cpp
View File

@ -873,7 +873,9 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour
if (tex)
{
const GSLocalMemory::psm_t &psm = GSLocalMemory::m_psm[m_context->TEX0.PSM];
// Warning fetch the texture PSM format rather than the context format. The latter could have been corrected in the texture cache for depth.
//const GSLocalMemory::psm_t &psm = GSLocalMemory::m_psm[m_context->TEX0.PSM];
const GSLocalMemory::psm_t &psm = GSLocalMemory::m_psm[tex->m_TEX0.PSM];
const GSLocalMemory::psm_t &cpsm = psm.pal > 0 ? GSLocalMemory::m_psm[m_context->TEX0.CPSM] : psm;
bool bilinear = m_filter == 2 ? m_vt.IsLinear() : m_filter != 0;
bool simple_sample = !tex->m_palette && cpsm.fmt == 0 && m_context->CLAMP.WMS < 2 && m_context->CLAMP.WMT < 2 && !psm.depth;

10
plugins/GSdx/GSTextureCache.cpp
View File

@ -295,8 +295,14 @@ GSTextureCache::Source* GSTextureCache::LookupSource(const GIFRegTEX0& TEX0, con
if(!t->m_age && t->m_used && t->m_dirty.empty() && GSUtil::HasSharedBits(bp, psm, t->m_TEX0.TBP0, t->m_TEX0.PSM))
{
GL_INS("TC: Warning depth format read as color format. Pixels will be scrambled");
dst = t;
break;
//dst = t;
//break;
// Let's fetch a depth format texture. Rational, it will avoid the texture allocation and the
// rescaling of the current function.
GIFRegTEX0 depth_TEX0;
depth_TEX0.u32[0] = TEX0.u32[0] | (0x30u << 20u);
depth_TEX0.u32[1] = TEX0.u32[1];
return LookupDepthSource(depth_TEX0, TEXA, r);
}
}
}