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Vulkan: write the translucent polygon parameters straight into the buffer

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The per-pixel renderer writes each translucent polygon's two words where the shaders read them, instead of into a vector made each render and copied after.
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LibretroAdmin authored and libretroadmin committed 2026-10-28 08:23:04 +01:00
1 parent ac14bc18bf
commit c41cfa30dc
1 file changed
+17 -15
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core/rend/vulkan/oit/oit_drawer.cpp
+17 -15
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@@ -334,26 +334,28 @@ void OITDrawer::UploadMainBuffer(const OITDescriptorSets::FragmentShaderUniforms
chunks.push_back(nullptr);
chunkSizes.push_back(padding);
std::vector<u32> trPolyParams(pvrrc.gpu ? 0 : pvrrc.global_param_tr.used() * 2);
if (pvrrc.gpu || pvrrc.global_param_tr.used() == 0)
trPolyParams.push_back(0); // makes the validation layers happy
else
{
const PolyParam *pp_end = pvrrc.global_param_tr.LastPtr(0);
const PolyParam *pp = pvrrc.global_param_tr.head();
for (int i = 0; pp != pp_end; i += 2, pp++)
{
trPolyParams[i] = (pp->tsp.full & 0xffff00c0) | ((pp->isp.full >> 16) & 0xe400) | ((pp->pcw.full >> 7) & 1);
trPolyParams[i + 1] = pp->tsp1.full;
}
}
offsets.polyParamsSize = trPolyParams.size() * 4;
chunks.push_back(trPolyParams.data());
/* (written below, straight into the buffer: two words a translucent
* polygon, or the one the validation layers want when there is none) */
const u32 trPolys = pvrrc.gpu ? 0 : (u32)pvrrc.global_param_tr.used();
offsets.polyParamsSize = (trPolys != 0 ? trPolys * 2 : 1) * 4;
chunks.push_back(nullptr);
chunkSizes.push_back(offsets.polyParamsSize);
u32 totalSize = offsets.polyParamsOffset + offsets.polyParamsSize;
BufferData *buffer = GetMainBuffer(totalSize);
buffer->upload(chunks.size(), &chunkSizes[0], &chunks[0]);
u32 *trPolyParams = (u32 *)((u8 *)buffer->MapMemory() + offsets.polyParamsOffset);
if (trPolys == 0)
trPolyParams[0] = 0;
else
{
const PolyParam *pp = pvrrc.global_param_tr.head();
for (u32 i = 0; i < trPolys; i++, pp++)
{
trPolyParams[i * 2] = (pp->tsp.full & 0xffff00c0) | ((pp->isp.full >> 16) & 0xe400) | ((pp->pcw.full >> 7) & 1);
trPolyParams[i * 2 + 1] = pp->tsp1.full;
}
}
}
bool OITDrawer::Draw(const Texture *fogTexture, const Texture *paletteTexture)