From 6a1ecab2dde1db7d3183d9c98eda393341cca50b Mon Sep 17 00:00:00 2001 From: Fernando Sahmkow Date: Mon, 28 Aug 2023 00:54:39 +0200 Subject: Vulkan: Implement Depth Bias Control --- src/video_core/renderer_vulkan/vk_rasterizer.cpp | 25 +++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) (limited to 'src/video_core/renderer_vulkan') diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp index 01e76a82c..0201c4d08 100644 --- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp +++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp @@ -1043,15 +1043,34 @@ void RasterizerVulkan::UpdateDepthBias(Tegra::Engines::Maxwell3D::Regs& regs) { regs.zeta.format == Tegra::DepthFormat::X8Z24_UNORM || regs.zeta.format == Tegra::DepthFormat::S8Z24_UNORM || regs.zeta.format == Tegra::DepthFormat::V8Z24_UNORM; - if (is_d24 && !device.SupportsD24DepthBuffer()) { + bool force_unorm = ([&] { + if (!is_d24 || device.SupportsD24DepthBuffer()) { + return false; + } + if (device.IsExtDepthBiasControlSupported()) { + return true; + } // 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(1ULL << (32 - 24)) / (static_cast(0x1.ep+127)); units = static_cast(static_cast(units) * rescale_factor); - } + return false; + })(); scheduler.Record([constant = units, clamp = regs.depth_bias_clamp, - factor = regs.slope_scale_depth_bias](vk::CommandBuffer cmdbuf) { + factor = regs.slope_scale_depth_bias, force_unorm, + precise = device.HasExactDepthBiasControl()](vk::CommandBuffer cmdbuf) { + if (force_unorm) { + VkDepthBiasRepresentationInfoEXT info{ + .sType = VK_STRUCTURE_TYPE_DEPTH_BIAS_REPRESENTATION_INFO_EXT, + .pNext = nullptr, + .depthBiasRepresentation = + VK_DEPTH_BIAS_REPRESENTATION_LEAST_REPRESENTABLE_VALUE_FORCE_UNORM_EXT, + .depthBiasExact = precise ? VK_TRUE : VK_FALSE, + }; + cmdbuf.SetDepthBias(constant, clamp, factor, &info); + return; + } cmdbuf.SetDepthBias(constant, clamp, factor); }); } -- cgit v1.2.3