diff --git a/patches/patchinstall.sh b/patches/patchinstall.sh
index 3700fa38..96213dce 100755
--- a/patches/patchinstall.sh
+++ b/patches/patchinstall.sh
@@ -352,6 +352,7 @@ patch_enable_all ()
 	enable_wined3d_CSMT_Main="$1"
 	enable_wined3d_DXTn="$1"
 	enable_wined3d_Dual_Source_Blending="$1"
+	enable_wined3d_Improved_RCP_Support="$1"
 	enable_wined3d_Indexed_Vertex_Blending="$1"
 	enable_wined3d_QUERY_Stubs="$1"
 	enable_wined3d_Restore_DirectX10_Support="$1"
@@ -1218,6 +1219,9 @@ patch_enable ()
 		wined3d-Dual_Source_Blending)
 			enable_wined3d_Dual_Source_Blending="$2"
 			;;
+		wined3d-Improved-RCP_Support)
+			enable_wined3d_Improved_RCP_Support="$2"
+			;;
 		wined3d-Indexed_Vertex_Blending)
 			enable_wined3d_Indexed_Vertex_Blending="$2"
 			;;
@@ -7292,6 +7296,22 @@ if test "$enable_wined3d_CSMT_Main" -eq 1; then
 	) >> "$patchlist"
 fi
 
+# Patchset wined3d-Improved-RCP_Support
+# |
+# | This patchset fixes the following Wine bugs:
+# |   *	[#36089] Improve dirt rendering in SpinTires
+# |   *	[#45375] Halo online black display problems
+# |
+# | Modified files:
+# |   *	dlls/wined3d/glsl_shader.c
+# |
+if test "$enable_wined3d_Improved_RCP_Support" -eq 1; then
+	patch_apply wined3d-Improved-RCP_Support/0001-wined3d-Improve-dirt-rendering-in-SpinTires.patch
+	(
+		printf '%s\n' '+    { "Józef Kucia", "wined3d: Improve dirt rendering in SpinTires.", 1 },';
+	) >> "$patchlist"
+fi
+
 # Patchset wined3d-WINED3D_RS_COLORWRITEENABLE
 # |
 # | Modified files:
diff --git a/patches/wined3d-Improved-RCP_Support/0001-wined3d-Improve-dirt-rendering-in-SpinTires.patch b/patches/wined3d-Improved-RCP_Support/0001-wined3d-Improve-dirt-rendering-in-SpinTires.patch
new file mode 100644
index 00000000..a2118d84
--- /dev/null
+++ b/patches/wined3d-Improved-RCP_Support/0001-wined3d-Improve-dirt-rendering-in-SpinTires.patch
@@ -0,0 +1,28 @@
+From 4ee7b500311daa517d03d197a1adb9a29c8eeb32 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=B3zef=20Kucia?= <jkucia@codeweavers.com>
+Date: Mon, 2 Jul 2018 14:08:49 +1000
+Subject: [PATCH] wined3d: Improve dirt rendering in SpinTires
+
+Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=36089
+Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45375
+---
+ dlls/wined3d/glsl_shader.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
+index 86259ae..b6a858d 100644
+--- a/dlls/wined3d/glsl_shader.c
++++ b/dlls/wined3d/glsl_shader.c
+@@ -4400,6 +4400,9 @@ static void shader_glsl_scalar_op(const struct wined3d_shader_instruction *ins)
+ 
+     if (dst_size > 1 && shader_version < WINED3D_SHADER_VERSION(4, 0))
+         shader_addline(buffer, "vec%u(%s%s%s));\n", dst_size, prefix, src0_param.param_str, suffix);
++    else if (ins->handler_idx == WINED3DSIH_RCP)
++        shader_addline(buffer, "%s == 0.0f ? 0.0f : %s%s%s);\n",
++                src0_param.param_str, prefix, src0_param.param_str, suffix);
+     else
+         shader_addline(buffer, "%s%s%s);\n", prefix, src0_param.param_str, suffix);
+ }
+-- 
+1.9.1
+
diff --git a/patches/wined3d-Improved-RCP_Support/definition b/patches/wined3d-Improved-RCP_Support/definition
new file mode 100644
index 00000000..ef4c5e65
--- /dev/null
+++ b/patches/wined3d-Improved-RCP_Support/definition
@@ -0,0 +1,2 @@
+Fixes: [36089] Improve dirt rendering in SpinTires
+Fixes: [45375] Halo online black display problems