diff --git a/dlls/wined3d/arb_program_shader.c b/dlls/wined3d/arb_program_shader.c
index 22835b1..ec86d41 100644
--- a/dlls/wined3d/arb_program_shader.c
+++ b/dlls/wined3d/arb_program_shader.c
@@ -3360,8 +3360,9 @@
     next_local = shader_generate_arb_declarations( (IWineD3DBaseShader*) This, reg_maps, buffer, &GLINFO_LOCATION,
             lconst_map, NULL, &priv_ctx);
 
-    for(i = 0; i < (sizeof(reg_maps->bumpmat) / sizeof(reg_maps->bumpmat[0])); i++) {
-        if(!reg_maps->bumpmat[i]) continue;
+    for (i = 0, map = reg_maps->bumpmat; map; map >>= 1, ++i)
+    {
+        if (!(map & 1)) continue;
 
         cur = compiled->numbumpenvmatconsts;
         compiled->bumpenvmatconst[cur].const_num = WINED3D_CONST_NUM_UNUSED;
@@ -5224,8 +5225,9 @@
 
     if (use_ps(stateblock))
     {
-        if(stage != 0 &&
-           ((IWineD3DPixelShaderImpl *) stateblock->pixelShader)->baseShader.reg_maps.bumpmat[stage]) {
+        if (stage != 0
+                && (((IWineD3DPixelShaderImpl *)stateblock->pixelShader)->baseShader.reg_maps.bumpmat & (1 << stage)))
+        {
             /* The pixel shader has to know the bump env matrix. Do a constants update if it isn't scheduled
              * anyway
              */
diff --git a/dlls/wined3d/baseshader.c b/dlls/wined3d/baseshader.c
index 3530eab..252197c 100644
--- a/dlls/wined3d/baseshader.c
+++ b/dlls/wined3d/baseshader.c
@@ -686,7 +686,7 @@
                     if (ins.handler_idx == WINED3DSIH_TEXBEM
                             || ins.handler_idx == WINED3DSIH_TEXBEML)
                     {
-                        reg_maps->bumpmat[sampler_code] = TRUE;
+                        reg_maps->bumpmat |= 1 << dst_param.reg.idx;
                         if (ins.handler_idx == WINED3DSIH_TEXBEML)
                         {
                             reg_maps->luminanceparams[sampler_code] = TRUE;
@@ -695,7 +695,7 @@
                 }
                 else if (ins.handler_idx == WINED3DSIH_BEM)
                 {
-                    reg_maps->bumpmat[dst_param.reg.idx] = TRUE;
+                    reg_maps->bumpmat |= 1 << dst_param.reg.idx;
                 }
             }
 
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index 8488c29..16b772e 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -899,10 +899,9 @@
             shader_addline(buffer, "void order_ps_input();\n");
         }
     } else {
-        for(i = 0; i < (sizeof(reg_maps->bumpmat) / sizeof(reg_maps->bumpmat[0])); i++) {
-            if(!reg_maps->bumpmat[i]) {
-                continue;
-            }
+        for (i = 0, map = reg_maps->bumpmat; map; map >>= 1, ++i)
+        {
+            if (!(map & 1)) continue;
 
             shader_addline(buffer, "uniform mat2 bumpenvmat%d;\n", i);
 
diff --git a/dlls/wined3d/state.c b/dlls/wined3d/state.c
index 3fc555c..cb87d73 100644
--- a/dlls/wined3d/state.c
+++ b/dlls/wined3d/state.c
@@ -3529,8 +3529,9 @@
 static void shader_bumpenvmat(DWORD state, IWineD3DStateBlockImpl *stateblock, struct wined3d_context *context)
 {
     DWORD stage = (state - STATE_TEXTURESTAGE(0, 0)) / (WINED3D_HIGHEST_TEXTURE_STATE + 1);
-    if(stateblock->pixelShader && stage != 0 &&
-       ((IWineD3DPixelShaderImpl *) stateblock->pixelShader)->baseShader.reg_maps.bumpmat[stage]) {
+    if (stateblock->pixelShader && stage != 0
+            && (((IWineD3DPixelShaderImpl *)stateblock->pixelShader)->baseShader.reg_maps.bumpmat & (1 << stage)))
+    {
         /* The pixel shader has to know the bump env matrix. Do a constants update if it isn't scheduled
          * anyway
          */
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index bac13cd..32402ab 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -642,7 +642,8 @@
     WORD local_bool_consts;                 /* MAX_CONST_B, 16 */
 
     WINED3DSAMPLER_TEXTURE_TYPE sampler_type[max(MAX_FRAGMENT_SAMPLERS, MAX_VERTEX_SAMPLERS)];
-    BOOL bumpmat[MAX_TEXTURES], luminanceparams[MAX_TEXTURES];
+    BYTE bumpmat;                           /* MAX_TEXTURES, 8 */
+    BOOL luminanceparams[MAX_TEXTURES];
 
     WORD usesnrm        : 1;
     WORD vpos           : 1;