diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index dd967030d97..27f089ff709 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -7509,10 +7509,13 @@ static HRESULT shader_glsl_generate_shader_phase(const struct wined3d_shader *sh
         struct shader_glsl_ctx_priv *priv_ctx, const struct wined3d_shader_phase *phase,
         const char *phase_name, unsigned phase_idx)
 {
+    unsigned int i;
     HRESULT hr;
 
     shader_addline(buffer, "void hs_%s_phase%u(%s)\n{\n",
             phase_name, phase_idx, phase->instance_count ? "int phase_instance_id" : "");
+    for (i = 0; i < phase->temporary_count; ++i)
+        shader_addline(buffer, "vec4 R%u;\n", i);
     hr = shader_generate_code(shader, buffer, reg_maps, priv_ctx, phase->start, phase->end);
     shader_addline(buffer, "}\n");
     return hr;
diff --git a/dlls/wined3d/shader.c b/dlls/wined3d/shader.c
index a4d3a59cf95..74cb92ef059 100644
--- a/dlls/wined3d/shader.c
+++ b/dlls/wined3d/shader.c
@@ -1105,13 +1105,20 @@ static HRESULT shader_get_registers_used(struct wined3d_shader *shader, const st
         }
         else if (ins.handler_idx == WINED3DSIH_DCL_INDEXABLE_TEMP)
         {
-            struct wined3d_shader_indexable_temp *reg;
+            if (phase)
+            {
+                FIXME("Indexable temporary registers not supported.\n");
+            }
+            else
+            {
+                struct wined3d_shader_indexable_temp *reg;
 
-            if (!(reg = HeapAlloc(GetProcessHeap(), 0, sizeof(*reg))))
-                return E_OUTOFMEMORY;
+                if (!(reg = HeapAlloc(GetProcessHeap(), 0, sizeof(*reg))))
+                    return E_OUTOFMEMORY;
 
-            *reg = ins.declaration.indexable_temp;
-            list_add_tail(&reg_maps->indexable_temps, &reg->entry);
+                *reg = ins.declaration.indexable_temp;
+                list_add_tail(&reg_maps->indexable_temps, &reg->entry);
+            }
         }
         else if (ins.handler_idx == WINED3DSIH_DCL_INPUT_PRIMITIVE)
         {
@@ -1168,7 +1175,10 @@ static HRESULT shader_get_registers_used(struct wined3d_shader *shader, const st
         }
         else if (ins.handler_idx == WINED3DSIH_DCL_TEMPS)
         {
-            reg_maps->temporary_count = ins.declaration.count;
+            if (phase)
+                phase->temporary_count = ins.declaration.count;
+            else
+                reg_maps->temporary_count = ins.declaration.count;
         }
         else if (ins.handler_idx == WINED3DSIH_DCL_TESSELLATOR_DOMAIN)
         {
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index d1779767291..4f2916b3f9b 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -3738,6 +3738,7 @@ struct wined3d_shader_phase
     const DWORD *start;
     const DWORD *end;
     unsigned int instance_count;
+    unsigned int temporary_count;
 };
 
 struct wined3d_vertex_shader