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[D3D12] ROV sample depth via ddxy(z), DSV depth bias cleanup

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This commit is contained in:
Triang3l
2021-06-06 18:27:43 +03:00
parent e3c14419f6
commit dce6938827
22 changed files with 4603 additions and 4828 deletions
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30
src/xenia/gpu/draw_util.h
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@@ -88,6 +88,11 @@ inline bool IsPrimitivePolygonal(const RegisterFile& regs) {
bool IsRasterizationPotentiallyDone(const RegisterFile& regs,
bool primitive_polygonal);
// Direct3D 10.1+ standard sample positions, also used in Vulkan, for
// calculations related to host MSAA, in 1/16th of a pixel.
extern const int8_t kD3D10StandardSamplePositions2x[2][2];
extern const int8_t kD3D10StandardSamplePositions4x[4][2];
inline reg::RB_DEPTHCONTROL GetDepthControlForCurrentEdramMode(
const RegisterFile& regs) {
xenos::ModeControl edram_mode = regs.Get<reg::RB_MODECONTROL>().edram_mode;
@@ -101,6 +106,31 @@ inline reg::RB_DEPTHCONTROL GetDepthControlForCurrentEdramMode(
return regs.Get<reg::RB_DEPTHCONTROL>();
}
constexpr float GetD3D10PolygonOffsetScale(
xenos::DepthRenderTargetFormat depth_format, bool float24_as_0_to_0_5) {
if (depth_format == xenos::DepthRenderTargetFormat::kD24S8) {
return float(1 << 24);
}
// 20 explicit + 1 implicit (1.) mantissa bits.
// 2^20 is not enough for Call of Duty 4 retail version's first mission F.N.G.
// shooting range floor (with the number 1) on Direct3D 12. Tested on Nvidia
// GeForce GTX 1070, the exact formula (taking into account the 0...1 to
// 0...0.5 remapping described below) used for testing is
// `int(ceil(offset * 2^20 * 0.5)) * sign(offset)`. With 2^20 * 0.5, there
// are various kinds of stripes dependending on the view angle in that
// location. With 2^21 * 0.5, the issue is not present.
constexpr float kFloat24Scale = float(1 << 21);
// 0...0.5 range may be used on the host to represent the 0...1 guest depth
// range to be able to copy all possible encodings, which are [0, 2), via a
// [0, 1] depth output variable, during EDRAM contents reinterpretation.
// This is done by scaling the viewport depth bounds by 0.5. However, the
// depth bias is applied after the viewport. This adjustment is only needed
// for the constant bias - for slope-scaled, the derivatives of Z are
// calculated after the viewport as well, and will already include the 0.5
// scaling from the viewport.
return float24_as_0_to_0_5 ? kFloat24Scale * 0.5f : kFloat24Scale;
}
inline bool DoesCoverageDependOnAlpha(reg::RB_COLORCONTROL rb_colorcontrol) {
return (rb_colorcontrol.alpha_test_enable &&
rb_colorcontrol.alpha_func != xenos::CompareFunction::kAlways) ||