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[D3D12] Truncate depth to float24 in EDRAM range ownership transfers and resolves by default

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Doesn't ruin the "greater or equal" depth test in subsequent rendering passes if precision is lost, unlike rounding to the nearest
This commit is contained in:
Triang3l
2022-06-22 12:53:09 +03:00
parent e2f632f8fa
commit 7869b080d3
14 changed files with 193 additions and 185 deletions
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26
src/xenia/gpu/d3d12/d3d12_render_target_cache.cc
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@@ -457,7 +457,9 @@ bool D3D12RenderTargetCache::Initialize() {
gamma_render_target_as_srgb_ = cvars::gamma_render_target_as_srgb;
depth_float24_conversion_ = GetConfigDepthFloat24Conversion();
depth_float24_round_ = cvars::depth_float24_round;
depth_float24_convert_in_pixel_shader_ =
cvars::depth_float24_convert_in_pixel_shader;
// Check if 2x MSAA is supported or needs to be emulated with 4x MSAA
// instead.
@@ -1013,8 +1015,9 @@ bool D3D12RenderTargetCache::Initialize() {
// Blending is done in linear space directly in shaders.
gamma_render_target_as_srgb_ = false;
// Always true float24 depth.
depth_float24_conversion_ = DepthFloat24Conversion::kOnOutputRounding;
// Always true float24 depth rounded to the nearest even.
depth_float24_round_ = true;
depth_float24_convert_in_pixel_shader_ = true;
// Only ForcedSampleCount, which doesn't support 2x.
msaa_2x_supported_ = false;
@@ -2091,7 +2094,7 @@ RenderTargetCache::RenderTarget* D3D12RenderTargetCache::CreateRenderTarget(
bool D3D12RenderTargetCache::IsHostDepthEncodingDifferent(
xenos::DepthRenderTargetFormat format) const {
if (format == xenos::DepthRenderTargetFormat::kD24FS8) {
return depth_float24_conversion_ == DepthFloat24Conversion::kOnCopy;
return !depth_float24_convert_in_pixel_shader_;
}
return false;
}
@@ -3542,8 +3545,8 @@ D3D12RenderTargetCache::GetOrCreateTransferPipelines(TransferShaderKey key) {
} break;
case xenos::DepthRenderTargetFormat::kD24FS8: {
// Convert using r1.y as temporary.
DxbcShaderTranslator::PreClampedDepthTo20e4(a, i, 3, i, 3, 1, 1,
true);
DxbcShaderTranslator::PreClampedDepthTo20e4(
a, i, 3, i, 3, 1, 1, depth_float24_round(), true);
} break;
}
// Merge depth and stencil into r0/r1.x.
@@ -3729,8 +3732,8 @@ D3D12RenderTargetCache::GetOrCreateTransferPipelines(TransferShaderKey key) {
} break;
case xenos::DepthRenderTargetFormat::kD24FS8: {
// Convert using r1.y as temporary.
DxbcShaderTranslator::PreClampedDepthTo20e4(a, 1, 3, 1, 3, 1, 1,
true);
DxbcShaderTranslator::PreClampedDepthTo20e4(
a, 1, 3, 1, 3, 1, 1, depth_float24_round(), true);
} break;
}
if (dest_is_color) {
@@ -4105,8 +4108,8 @@ D3D12RenderTargetCache::GetOrCreateTransferPipelines(TransferShaderKey key) {
dxbc::Src::R(0, dxbc::Src::kYYYY));
} break;
case xenos::DepthRenderTargetFormat::kD24FS8: {
DxbcShaderTranslator::PreClampedDepthTo20e4(a, 0, 1, 0, 0, 0, 2,
true);
DxbcShaderTranslator::PreClampedDepthTo20e4(
a, 0, 1, 0, 0, 0, 2, depth_float24_round(), true);
} break;
}
a.OpIEq(dxbc::Dest::R(0, 0b0010), dxbc::Src::R(0, dxbc::Src::kYYYY),
@@ -6167,7 +6170,8 @@ ID3D12PipelineState* D3D12RenderTargetCache::GetOrCreateDumpPipeline(
case xenos::DepthRenderTargetFormat::kD24FS8:
// Convert to [0, 2) float24 from [0, 1) float32, using r0.x as
// temporary.
DxbcShaderTranslator::PreClampedDepthTo20e4(a, 1, 0, 1, 0, 0, 0, true);
DxbcShaderTranslator::PreClampedDepthTo20e4(
a, 1, 0, 1, 0, 0, 0, depth_float24_round(), true);
break;
}
// Combine 24-bit depth and stencil into r1.x.