vbo: replace assert(0) with unreachable()

Reviewed-by: Roland Scheidegger <sroland@vmware.com>

src/mesa/vbo/vbo_context.h

@@ -154,7 +154,7 @@ vbo_draw_method(struct vbo_context *vbo, gl_draw_method method)
          ctx->Array._DrawArrays = vbo->save.inputs;
          break;
       default:
-         assert(0);
+         unreachable("Bad VBO drawing method");
       }
 
       ctx->NewDriverState |= ctx->DriverFlags.NewArray;
@@ -178,7 +178,7 @@ vbo_attrtype_to_integer_flag(GLenum format)
    case GL_UNSIGNED_INT64_ARB:
       return GL_TRUE;
    default:
-      assert(0);
+      unreachable("Bad vertex attribute type");
       return GL_FALSE;
    }
 }
@@ -195,7 +195,7 @@ vbo_attrtype_to_double_flag(GLenum format)
    case GL_DOUBLE:
       return GL_TRUE;
    default:
-      assert(0);
+      unreachable("Bad vertex attribute type");
       return GL_FALSE;
    }
 }
@@ -218,7 +218,7 @@ vbo_get_default_vals_as_union(GLenum format)
    case GL_UNSIGNED_INT:
       return (fi_type *)default_int;
    default:
-      assert(0);
+      unreachable("Bad vertex format");
       return NULL;
    }
 }

src/mesa/vbo/vbo_exec_array.c

@@ -150,7 +150,7 @@ check_draw_elements_data(struct gl_context *ctx, GLsizei count,
          j = ((const GLuint *) elements)[i];
          break;
       default:
-         assert(0);
+         unreachable("Unexpected index buffer type");
       }
 
       /* check element j of each enabled array */

src/mesa/vbo/vbo_exec_draw.c

@@ -159,7 +159,7 @@ vbo_copy_vertices(struct vbo_exec_context *exec)
    case PRIM_OUTSIDE_BEGIN_END:
       return 0;
    default:
-      assert(0);
+      unreachable("Unexpected primitive type");
       return 0;
    }
 }
@@ -220,7 +220,7 @@ vbo_exec_bind_arrays(struct gl_context *ctx)
       }
       break;
    default:
-      assert(0);
+      unreachable("Bad vertex program mode");
    }
 
    for (attr = 0; attr < VERT_ATTRIB_MAX ; attr++) {

src/mesa/vbo/vbo_save_api.c

@@ -174,7 +174,7 @@ copy_vertices(struct gl_context *ctx,
                 sz * sizeof(GLfloat));
       return i;
    default:
-      assert(0);
+      unreachable("Unexpected primitive type");
       return 0;
    }
 }
@@ -675,8 +675,7 @@ copy_from_current(struct gl_context *ctx)
          save->attrptr[i][0] = save->current[i][0];
          break;
       case 0:
-         assert(0);
-         break;
+         unreachable("Unexpected vertex attribute size");
       }
    }
 }

src/mesa/vbo/vbo_save_draw.c

@@ -194,7 +194,7 @@ bind_vertex_list(struct gl_context *ctx,
       }
       break;
    default:
-      assert(0);
+      unreachable("Bad vertex program mode");
    }
 
    for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) {