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[D3D12] Emulate reversed Z in shaders because it's unsupported on Nvidia

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Triang3l
2018-09-26 20:46:24 +03:00
parent 55f96c0f83
commit ea7d9e9060
8 changed files with 215 additions and 152 deletions
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7
src/xenia/gpu/d3d12/pipeline_cache.cc
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@@ -540,6 +540,13 @@ PipelineCache::UpdateStatus PipelineCache::UpdateRasterizerState(
register_file_->values[XE_GPU_REG_PA_SU_POLY_OFFSET_BACK_SCALE].f32;
}
}
// Reversed depth is emulated in vertex shaders because MinDepth > MaxDepth
// in viewports doesn't seem to work on Nvidia.
if ((register_file_->values[XE_GPU_REG_PA_CL_VTE_CNTL].u32 & (1 << 4)) &&
register_file_->values[XE_GPU_REG_PA_CL_VPORT_ZSCALE].f32 < 0.0f) {
poly_offset = -poly_offset;
poly_offset_scale = -poly_offset_scale;
}
if (((pa_su_sc_mode_cntl >> 3) & 0x3) == 0) {
// Fill mode is disabled.
fill_mode_wireframe = false;