diff --git a/apps/openmw/mwrender/postprocessor.cpp b/apps/openmw/mwrender/postprocessor.cpp
index 1c0702879d..59559d70e7 100644
--- a/apps/openmw/mwrender/postprocessor.cpp
+++ b/apps/openmw/mwrender/postprocessor.cpp
@@ -409,10 +409,14 @@ namespace MWRender
 
             mViewer->stopThreading();
 
-            auto& shaderManager = MWBase::Environment::get().getResourceSystem()->getSceneManager()->getShaderManager();
-            auto defines = shaderManager.getGlobalDefines();
-            defines["disableNormals"] = mNormals ? "0" : "1";
-            shaderManager.setGlobalDefines(defines);
+            if (mNormalsSupported)
+            {
+                auto& shaderManager
+                    = MWBase::Environment::get().getResourceSystem()->getSceneManager()->getShaderManager();
+                auto defines = shaderManager.getGlobalDefines();
+                defines["disableNormals"] = mNormals ? "0" : "1";
+                shaderManager.setGlobalDefines(defines);
+            }
 
             mRendering.getLightRoot()->setCollectPPLights(mPassLights);
             mStateUpdater->bindPointLights(mPassLights ? mRendering.getLightRoot()->getPPLightsBuffer() : nullptr);
diff --git a/components/fx/parse_constants.hpp b/components/fx/parse_constants.hpp
index 9be54ed3a7..2057476f3e 100644
--- a/components/fx/parse_constants.hpp
+++ b/components/fx/parse_constants.hpp
@@ -35,7 +35,7 @@ namespace fx
             { "bgra", GL_BGRA },
         } };
 
-        constexpr std::array<std::pair<std::string_view, int>, 9> SourceType = { {
+        constexpr std::array<std::pair<std::string_view, int>, 10> SourceType = { {
             { "byte", GL_BYTE },
             { "unsigned_byte", GL_UNSIGNED_BYTE },
             { "short", GL_SHORT },
@@ -43,6 +43,7 @@ namespace fx
             { "int", GL_INT },
             { "unsigned_int", GL_UNSIGNED_INT },
             { "unsigned_int_24_8", GL_UNSIGNED_INT_24_8 },
+            { "half_float", GL_HALF_FLOAT },
             { "float", GL_FLOAT },
             { "double", GL_DOUBLE },
         } };
@@ -129,4 +130,4 @@ namespace fx
     }
 }
 
-#endif
\ No newline at end of file
+#endif
diff --git a/files/data/shaders/bloomlinear.omwfx b/files/data/shaders/bloomlinear.omwfx
index 3de7139f39..4c583a9a89 100644
--- a/files/data/shaders/bloomlinear.omwfx
+++ b/files/data/shaders/bloomlinear.omwfx
@@ -80,8 +80,8 @@ shared {
         radius = max(radius, 0.1);
         // hack: make the radius wider on the screen edges
         // (makes things in the corner of the screen look less "wrong" with not-extremely-low FOVs)
-        radius *= pow(texcoord.x*2.0-1.0, 2)+1.0;
-        radius *= pow(texcoord.y*2.0-1.0, 2)+1.0;
+        radius *= pow(texcoord.x*2.0-1.0, 2.0)+1.0;
+        radius *= pow(texcoord.y*2.0-1.0, 2.0)+1.0;
         return radius;
     }
     vec3 powv(vec3 a, float x)
@@ -94,7 +94,7 @@ render_target RT_NoMipmap {
     width_ratio = 0.25;
     height_ratio = 0.25;
     internal_format = rgb16f;
-    source_type = float;
+    source_type = half_float;
     source_format = rgb;
     mipmaps = false;
     min_filter = nearest;
@@ -105,7 +105,7 @@ render_target RT_Horizontal {
     width_ratio = 0.25;
     height_ratio = 0.25;
     internal_format = rgb16f;
-    source_type = float;
+    source_type = half_float;
     source_format = rgb;
     mipmaps = false;
     min_filter = nearest;
@@ -116,7 +116,7 @@ render_target RT_Vertical {
     width_ratio = 0.25;
     height_ratio = 0.25;
     internal_format = rgb16f;
-    source_type = float;
+    source_type = half_float;
     source_format = rgb;
     mipmaps = false;
     min_filter = linear;