From 227278098a6b883e3a40faeb28ec8f130d898240 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 4 May 2020 16:41:19 -0300
Subject: vk_sampler_cache: Use VK_EXT_custom_border_color when available

This should fix grass interactions on Breath of the Wild on Vulkan.
It is currently untested against validation layers.

Nvidia's Windows 443.09 beta driver or Linux 440.66.12 is required for
now.
---
 src/video_core/renderer_vulkan/vk_device.cpp | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'src/video_core/renderer_vulkan/vk_device.cpp')

diff --git a/src/video_core/renderer_vulkan/vk_device.cpp b/src/video_core/renderer_vulkan/vk_device.cpp
index 0e4bbca97..09ddfa59c 100644
--- a/src/video_core/renderer_vulkan/vk_device.cpp
+++ b/src/video_core/renderer_vulkan/vk_device.cpp
@@ -293,6 +293,17 @@ bool VKDevice::Create() {
         LOG_INFO(Render_Vulkan, "Device doesn't support transform feedbacks");
     }
 
+    VkPhysicalDeviceCustomBorderColorFeaturesEXT custom_border;
+    if (ext_custom_border_color) {
+        custom_border.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_CUSTOM_BORDER_COLOR_FEATURES_EXT;
+        custom_border.pNext = nullptr;
+        custom_border.customBorderColors = VK_TRUE;
+        custom_border.customBorderColorWithoutFormat = VK_TRUE;
+        SetNext(next, custom_border);
+    } else {
+        LOG_INFO(Render_Vulkan, "Device doesn't support custom border colors");
+    }
+
     if (!ext_depth_range_unrestricted) {
         LOG_INFO(Render_Vulkan, "Device doesn't support depth range unrestricted");
     }
@@ -520,6 +531,7 @@ std::vector<const char*> VKDevice::LoadExtensions() {
     bool has_khr_shader_float16_int8{};
     bool has_ext_subgroup_size_control{};
     bool has_ext_transform_feedback{};
+    bool has_ext_custom_border_color{};
     for (const auto& extension : physical.EnumerateDeviceExtensionProperties()) {
         Test(extension, khr_uniform_buffer_standard_layout,
              VK_KHR_UNIFORM_BUFFER_STANDARD_LAYOUT_EXTENSION_NAME, true);
@@ -534,6 +546,8 @@ std::vector<const char*> VKDevice::LoadExtensions() {
              false);
         Test(extension, has_ext_transform_feedback, VK_EXT_TRANSFORM_FEEDBACK_EXTENSION_NAME,
              false);
+        Test(extension, has_ext_custom_border_color, VK_EXT_CUSTOM_BORDER_COLOR_EXTENSION_NAME,
+             false);
         if (Settings::values.renderer_debug) {
             Test(extension, nv_device_diagnostics_config,
                  VK_NV_DEVICE_DIAGNOSTICS_CONFIG_EXTENSION_NAME, true);
@@ -606,6 +620,19 @@ std::vector<const char*> VKDevice::LoadExtensions() {
         }
     }
 
+    if (has_ext_custom_border_color) {
+        VkPhysicalDeviceCustomBorderColorFeaturesEXT border_features;
+        border_features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_CUSTOM_BORDER_COLOR_FEATURES_EXT;
+        border_features.pNext = nullptr;
+        features.pNext = &border_features;
+        physical.GetFeatures2KHR(features);
+
+        if (border_features.customBorderColors && border_features.customBorderColorWithoutFormat) {
+            extensions.push_back(VK_EXT_CUSTOM_BORDER_COLOR_EXTENSION_NAME);
+            ext_custom_border_color = true;
+        }
+    }
+
     return extensions;
 }
 
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