st/mesa: Make st_cb_blit.h FEATURE_EXT_framebuffer_blit aware.

This change allows st_cb_blit.h to be used without knowing if
FEATURE_EXT_framebuffer_blit is enabled.

src/mesa/state_tracker/st_cb_blit.c

@@ -60,6 +60,7 @@ st_destroy_blit(struct st_context *st)
 
 
 #if FEATURE_EXT_framebuffer_blit
+
 static void
 st_BlitFramebuffer(GLcontext *ctx,
                    GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
@@ -207,14 +208,12 @@ st_BlitFramebuffer(GLcontext *ctx,
       }
    }
 }
-#endif /* FEATURE_EXT_framebuffer_blit */
-
 
 
 void
 st_init_blit_functions(struct dd_function_table *functions)
 {
-#if FEATURE_EXT_framebuffer_blit
    functions->BlitFramebuffer = st_BlitFramebuffer;
-#endif
 }
+
+#endif /* FEATURE_EXT_framebuffer_blit */

src/mesa/state_tracker/st_cb_blit.h

@@ -29,18 +29,28 @@
 #define ST_CB_BLIT_H
 
 
+#include "main/mtypes.h"
 #include "st_context.h"
 
 
-
 extern void
 st_init_blit(struct st_context *st);
 
 extern void
 st_destroy_blit(struct st_context *st);
 
+#if FEATURE_EXT_framebuffer_blit
+
 extern void
 st_init_blit_functions(struct dd_function_table *functions);
 
+#else
+
+static INLINE void
+st_init_blit_functions(struct dd_function_table *functions)
+{
+}
+
+#endif /* FEATURE_EXT_framebuffer_blit */
 
 #endif /* ST_CB_BLIT_H */

src/mesa/state_tracker/st_context.c

@@ -212,9 +212,7 @@ static void st_destroy_context_priv( struct st_context *st )
    st_destroy_atoms( st );
    st_destroy_draw( st );
    st_destroy_generate_mipmap(st);
-#if FEATURE_EXT_framebuffer_blit
    st_destroy_blit(st);
-#endif
    st_destroy_clear(st);
    st_destroy_bitmap(st);
    st_destroy_drawpix(st);
@@ -281,9 +279,7 @@ void st_init_driver_functions(struct dd_function_table *functions)
    _mesa_init_glsl_driver_functions(functions);
 
    st_init_accum_functions(functions);
-#if FEATURE_EXT_framebuffer_blit
    st_init_blit_functions(functions);
-#endif
    st_init_bufferobject_functions(functions);
    st_init_clear_functions(functions);
    st_init_bitmap_functions(functions);