Merge pull request #7070 from FernandoS27/want-you-bad

Vulkan Rasterizer: Correct DepthBias/PolygonOffset on Vulkan.
This commit is contained in:
Ameer J 2021-10-23 18:02:23 -04:00 committed by GitHub
commit 494e34af6a
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 31 additions and 3 deletions

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@ -38,6 +38,9 @@ enum : u8 {
Shaders,
// Special entries
DepthBiasGlobal,
LastCommonEntry,
};

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@ -627,9 +627,21 @@ void RasterizerVulkan::UpdateDepthBias(Tegra::Engines::Maxwell3D::Regs& regs) {
if (!state_tracker.TouchDepthBias()) {
return;
}
scheduler.Record([constant = regs.polygon_offset_units, clamp = regs.polygon_offset_clamp,
float units = regs.polygon_offset_units / 2.0f;
const bool is_d24 = regs.zeta.format == Tegra::DepthFormat::S8_UINT_Z24_UNORM ||
regs.zeta.format == Tegra::DepthFormat::D24X8_UNORM ||
regs.zeta.format == Tegra::DepthFormat::D24S8_UNORM ||
regs.zeta.format == Tegra::DepthFormat::D24C8_UNORM;
if (is_d24 && !device.SupportsD24DepthBuffer()) {
// the base formulas can be obtained from here:
// https://docs.microsoft.com/en-us/windows/win32/direct3d11/d3d10-graphics-programming-guide-output-merger-stage-depth-bias
const double rescale_factor =
static_cast<double>(1ULL << (32 - 24)) / (static_cast<double>(0x1.ep+127));
units = static_cast<float>(static_cast<double>(units) * rescale_factor);
}
scheduler.Record([constant = units, clamp = regs.polygon_offset_clamp,
factor = regs.polygon_offset_factor](vk::CommandBuffer cmdbuf) {
cmdbuf.SetDepthBias(constant, clamp, factor / 2.0f);
cmdbuf.SetDepthBias(constant, clamp, factor);
});
}

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@ -79,7 +79,8 @@ public:
}
bool TouchDepthBias() {
return Exchange(Dirty::DepthBias, false);
return Exchange(Dirty::DepthBias, false) ||
Exchange(VideoCommon::Dirty::DepthBiasGlobal, false);
}
bool TouchBlendConstants() {

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@ -221,6 +221,7 @@ void TextureCache<P>::UpdateRenderTargets(bool is_clear) {
BindRenderTarget(&render_targets.depth_buffer_id, FindDepthBuffer(is_clear));
}
const ImageViewId depth_buffer_id = render_targets.depth_buffer_id;
PrepareImageView(depth_buffer_id, true, is_clear && IsFullClear(depth_buffer_id));
for (size_t index = 0; index < NUM_RT; ++index) {
@ -230,6 +231,8 @@ void TextureCache<P>::UpdateRenderTargets(bool is_clear) {
maxwell3d.regs.render_area.width,
maxwell3d.regs.render_area.height,
};
flags[Dirty::DepthBiasGlobal] = true;
}
template <class P>

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@ -623,6 +623,10 @@ Device::Device(VkInstance instance_, vk::PhysicalDevice physical_, VkSurfaceKHR
is_float16_supported = false;
}
supports_d24_depth =
IsFormatSupported(VK_FORMAT_D24_UNORM_S8_UINT,
VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT, FormatType::Optimal);
graphics_queue = logical.GetQueue(graphics_family);
present_queue = logical.GetQueue(present_family);
}

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@ -332,6 +332,10 @@ public:
return sets_per_pool;
}
bool SupportsD24DepthBuffer() const {
return supports_d24_depth;
}
private:
/// Checks if the physical device is suitable.
void CheckSuitability(bool requires_swapchain) const;
@ -425,6 +429,7 @@ private:
bool has_broken_cube_compatibility{}; ///< Has broken cube compatiblity bit
bool has_renderdoc{}; ///< Has RenderDoc attached
bool has_nsight_graphics{}; ///< Has Nsight Graphics attached
bool supports_d24_depth{}; ///< Supports D24 depth buffers.
// Telemetry parameters
std::string vendor_name; ///< Device's driver name.