From 2f88139145da99a695680c813ef5cc669eaef034 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Sat, 3 Dec 2011 10:04:18 -0700
Subject: [PATCH] mesa: remove the ctx->Driver.IsTextureResident() hook

No driver implemented this and we always returned "True" for residence
queries.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
---
 src/mesa/drivers/common/driverfuncs.c |  1 -
 src/mesa/main/dd.h                    |  5 -----
 src/mesa/main/texobj.c                | 23 +++--------------------
 src/mesa/main/texparam.c              |  6 ++----
 4 files changed, 5 insertions(+), 30 deletions(-)

diff --git a/src/mesa/drivers/common/driverfuncs.c b/src/mesa/drivers/common/driverfuncs.c
index 17281de58c3..50fcedee2ca 100644
--- a/src/mesa/drivers/common/driverfuncs.c
+++ b/src/mesa/drivers/common/driverfuncs.c
@@ -119,7 +119,6 @@ _mesa_init_driver_functions(struct dd_function_table *driver)
    driver->UnmapTextureImage = _swrast_unmap_teximage;
    driver->MapTexture = NULL;
    driver->UnmapTexture = NULL;
-   driver->IsTextureResident = NULL;
    driver->DrawTex = _mesa_meta_DrawTex;
 
    /* Vertex/fragment programs */
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index a068397ef87..d6f70d1c49e 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -532,11 +532,6 @@ struct dd_function_table {
    void (*UnmapRenderbuffer)(struct gl_context *ctx,
 			     struct gl_renderbuffer *rb);
 
-   /**
-    * Called by glAreTextureResident().
-    */
-   GLboolean (*IsTextureResident)( struct gl_context *ctx,
-                                   struct gl_texture_object *t );
    /*@}*/
 
 
diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c
index 17c78ce3e63..8e447cabdd4 100644
--- a/src/mesa/main/texobj.c
+++ b/src/mesa/main/texobj.c
@@ -1184,10 +1184,7 @@ _mesa_PrioritizeTextures( GLsizei n, const GLuint *texName,
  *
  * \return GL_TRUE if all textures are resident and \p residences is left unchanged, 
  * 
- * \sa glAreTexturesResident().
- *
- * Looks up each texture in the hash and calls
- * dd_function_table::IsTextureResident.
+ * Note: we assume all textures are always resident
  */
 GLboolean GLAPIENTRY
 _mesa_AreTexturesResident(GLsizei n, const GLuint *texName,
@@ -1195,7 +1192,7 @@ _mesa_AreTexturesResident(GLsizei n, const GLuint *texName,
 {
    GET_CURRENT_CONTEXT(ctx);
    GLboolean allResident = GL_TRUE;
-   GLint i, j;
+   GLint i;
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 
    if (n < 0) {
@@ -1206,6 +1203,7 @@ _mesa_AreTexturesResident(GLsizei n, const GLuint *texName,
    if (!texName || !residences)
       return GL_FALSE;
 
+   /* We only do error checking on the texture names */
    for (i = 0; i < n; i++) {
       struct gl_texture_object *t;
       if (texName[i] == 0) {
@@ -1217,21 +1215,6 @@ _mesa_AreTexturesResident(GLsizei n, const GLuint *texName,
          _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident");
          return GL_FALSE;
       }
-      if (!ctx->Driver.IsTextureResident ||
-          ctx->Driver.IsTextureResident(ctx, t)) {
-         /* The texture is resident */
-         if (!allResident)
-            residences[i] = GL_TRUE;
-      }
-      else {
-         /* The texture is not resident */
-         if (allResident) {
-            allResident = GL_FALSE;
-            for (j = 0; j < i; j++)
-               residences[j] = GL_TRUE;
-         }
-         residences[i] = GL_FALSE;
-      }
    }
    
    return allResident;
diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c
index f4ec6338866..0f92a5b988e 100644
--- a/src/mesa/main/texparam.c
+++ b/src/mesa/main/texparam.c
@@ -1114,8 +1114,7 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
          }
          break;
       case GL_TEXTURE_RESIDENT:
-         *params = ctx->Driver.IsTextureResident ?
-            ctx->Driver.IsTextureResident(ctx, obj) : 1.0F;
+         *params = 1.0F;
          break;
       case GL_TEXTURE_PRIORITY:
          *params = obj->Priority;
@@ -1261,8 +1260,7 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
          }
          break;;
       case GL_TEXTURE_RESIDENT:
-         *params = ctx->Driver.IsTextureResident ?
-            ctx->Driver.IsTextureResident(ctx, obj) : 1;
+         *params = 1;
          break;;
       case GL_TEXTURE_PRIORITY:
          *params = FLOAT_TO_INT(obj->Priority);
-- 
2.30.2