intel: Fallback field is a bitmask, use GLbitfield

src/mesa/drivers/dri/i915/intel_tris.c

@@ -1194,12 +1194,16 @@ getFallbackString(GLuint bit)
 
 
 
+/**
+ * Enable/disable a fallback flag.
+ * \param bit  one of INTEL_FALLBACK_x flags.
+ */
 void
-intelFallback(struct intel_context *intel, GLuint bit, GLboolean mode)
+intelFallback(struct intel_context *intel, GLbitfield bit, GLboolean mode)
 {
    GLcontext *ctx = &intel->ctx;
    TNLcontext *tnl = TNL_CONTEXT(ctx);
-   GLuint oldfallback = intel->Fallback;
+   const GLbitfield oldfallback = intel->Fallback;
 
    if (mode) {
       intel->Fallback |= bit;

src/mesa/drivers/dri/intel/intel_context.c

@@ -839,7 +839,7 @@ intelDestroyContext(__DRIcontextPrivate * driContextPriv)
       _vbo_DestroyContext(&intel->ctx);
 
       _swrast_DestroyContext(&intel->ctx);
-      intel->Fallback = 0;      /* don't call _swrast_Flush later */
+      intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 
       intel_batchbuffer_free(intel->batch);
       intel->batch = NULL;

src/mesa/drivers/dri/intel/intel_context.h

@@ -61,6 +61,10 @@ typedef void (*intel_line_func) (struct intel_context *, intelVertex *,
                                  intelVertex *);
 typedef void (*intel_point_func) (struct intel_context *, intelVertex *);
 
+/**
+ * Bits for intel->Fallback field
+ */
+/*@{*/
 #define INTEL_FALLBACK_DRAW_BUFFER	 0x1
 #define INTEL_FALLBACK_READ_BUFFER	 0x2
 #define INTEL_FALLBACK_DEPTH_BUFFER      0x4
@@ -68,8 +72,9 @@ typedef void (*intel_point_func) (struct intel_context *, intelVertex *);
 #define INTEL_FALLBACK_USER		 0x10
 #define INTEL_FALLBACK_RENDERMODE	 0x20
 #define INTEL_FALLBACK_TEXTURE   	 0x40
+/*@}*/
 
-extern void intelFallback(struct intel_context *intel, GLuint bit,
+extern void intelFallback(struct intel_context *intel, GLbitfield bit,
                           GLboolean mode);
 #define FALLBACK( intel, bit, mode ) intelFallback( intel, bit, mode )
 
@@ -171,7 +176,7 @@ struct intel_context
    struct dri_metaops meta;
 
    GLint refcount;
-   GLuint Fallback;
+   GLbitfield Fallback;  /**< mask of INTEL_FALLBACK_x bits */
    GLuint NewGLState;
 
    dri_bufmgr *bufmgr;