Add UniformAccess page;

api/lovr/graphics/UniformAccess.lua

@@ -0,0 +1,23 @@
+return {
+  summary = 'Different access hints for shader resources.',
+  description = [[
+    When binding writable resources to shaders using `Shader:sendBlock` and `Shader:sendImage`, an
+    access pattern can be specified as a hint that says whether you plan to read or write to the
+    resource (or both).  Sometimes, LÖVR or the GPU driver can use this hint to get better
+    performance or avoid stalling.
+  ]],
+  values = {
+    {
+      name = 'read',
+      description = 'The Shader will use the resource in a read-only fashion.'
+    },
+    {
+      name = 'write',
+      description = 'The Shader will use the resource in a write-only fashion.'
+    },
+    {
+      name = 'readwrite',
+      description = 'The resource will be available for reading and writing.'
+    }
+  }
+}