Mesa (master): mesa: new code/functions for GL_ARB_sampler_objects

Brian Paul brianp at kemper.freedesktop.org
Mon Apr 11 20:23:52 PDT 2011


Module: Mesa
Branch: master
Commit: f22d49de0f02653bb54aeb6a5f07a56e2cc63f1d
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f22d49de0f02653bb54aeb6a5f07a56e2cc63f1d

Author: Brian Paul <brianp at vmware.com>
Date:   Sun Apr 10 12:47:47 2011 -0600

mesa: new code/functions for GL_ARB_sampler_objects

This implements the infrastructure for sampler objects and all the new
API functions.

---

 src/mesa/main/samplerobj.c | 1355 ++++++++++++++++++++++++++++++++++++++++++++
 src/mesa/main/samplerobj.h |   54 ++
 2 files changed, 1409 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/samplerobj.c b/src/mesa/main/samplerobj.c
new file mode 100644
index 0000000..55acb6d
--- /dev/null
+++ b/src/mesa/main/samplerobj.c
@@ -0,0 +1,1355 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2011  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file samplerobj.c
+ * \brief Functions for the GL_ARB_sampler_objects extension.
+ * \author Brian Paul
+ */
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/dispatch.h"
+#include "main/enums.h"
+#include "main/hash.h"
+#include "main/macros.h"
+#include "main/mfeatures.h"
+#include "main/mtypes.h"
+#include "main/samplerobj.h"
+
+
+static struct gl_sampler_object *
+_mesa_lookup_samplerobj(struct gl_context *ctx, GLuint name)
+{
+   if (name == 0)
+      return NULL;
+   else
+      return (struct gl_sampler_object *)
+         _mesa_HashLookup(ctx->Shared->SamplerObjects, name);
+}
+
+
+/**
+ * Handle reference counting.
+ */
+void
+_mesa_reference_sampler_object(struct gl_context *ctx,
+                               struct gl_sampler_object **ptr,
+                               struct gl_sampler_object *samp)
+{
+   if (*ptr == samp)
+      return;
+
+   if (*ptr) {
+      /* Unreference the old buffer */
+      GLboolean deleteFlag = GL_FALSE;
+      struct gl_sampler_object *oldSamp = *ptr;
+
+      /*_glthread_LOCK_MUTEX(oldSamp->Mutex);*/
+      ASSERT(oldSamp->RefCount > 0);
+      oldSamp->RefCount--;
+#if 0
+      printf("SamplerObj %p %d DECR to %d\n",
+             (void *) oldSamp, oldSamp->Name, oldSamp->RefCount);
+#endif
+      deleteFlag = (oldSamp->RefCount == 0);
+      /*_glthread_UNLOCK_MUTEX(oldSamp->Mutex);*/
+
+      if (deleteFlag) {
+	 ASSERT(ctx->Driver.DeleteSamplerObject);
+         ctx->Driver.DeleteSamplerObject(ctx, oldSamp);
+      }
+
+      *ptr = NULL;
+   }
+   ASSERT(!*ptr);
+
+   if (samp) {
+      /* reference new sampler */
+      /*_glthread_LOCK_MUTEX(samp->Mutex);*/
+      if (samp->RefCount == 0) {
+         /* this buffer's being deleted (look just above) */
+         /* Not sure this can every really happen.  Warn if it does. */
+         _mesa_problem(NULL, "referencing deleted buffer object");
+         *ptr = NULL;
+      }
+      else {
+         samp->RefCount++;
+#if 0
+         printf("SamplerObj %p %d INCR to %d\n",
+                (void *) samp, samp->Name, samp->RefCount);
+#endif
+         *ptr = samp;
+      }
+      /*_glthread_UNLOCK_MUTEX(samp->Mutex);*/
+   }
+}
+
+
+/**
+ * Initialize the fields of the given sampler object.
+ */
+void
+_mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name)
+{
+   sampObj->Name = name;
+   sampObj->RefCount = 1;
+   sampObj->WrapS = GL_REPEAT;
+   sampObj->WrapT = GL_REPEAT;
+   sampObj->WrapR = GL_REPEAT;
+   sampObj->MinFilter = GL_NEAREST_MIPMAP_LINEAR;
+   sampObj->MagFilter = GL_LINEAR;
+   sampObj->BorderColor.f[0] = 0.0;
+   sampObj->BorderColor.f[1] = 0.0;
+   sampObj->BorderColor.f[2] = 0.0;
+   sampObj->BorderColor.f[3] = 0.0;
+   sampObj->MinLod = -1000.0F;
+   sampObj->MaxLod = 1000.0F;
+   sampObj->LodBias = 0.0F;
+   sampObj->MaxAnisotropy = 1.0F;
+   sampObj->CompareMode = GL_NONE;
+   sampObj->CompareFunc = GL_LEQUAL;
+   sampObj->CompareFailValue = 0.0;
+   sampObj->sRGBDecode = GL_FALSE;
+   sampObj->DepthMode = 0;
+}
+
+
+/**
+ * Fallback for ctx->Driver.NewSamplerObject();
+ */
+struct gl_sampler_object *
+_mesa_new_sampler_object(struct gl_context *ctx, GLuint name)
+{
+   struct gl_sampler_object *sampObj = CALLOC_STRUCT(gl_sampler_object);
+   if (sampObj) {
+      _mesa_init_sampler_object(sampObj, name);
+   }
+   return sampObj;
+}
+
+
+/**
+ * Fallback for ctx->Driver.DeleteSamplerObject();
+ */
+void
+_mesa_delete_sampler_object(struct gl_context *ctx,
+                            struct gl_sampler_object *sampObj)
+{
+   FREE(sampObj);
+}
+
+
+static void GLAPIENTRY
+_mesa_GenSamplers(GLsizei count, GLuint *samplers)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint first;
+   GLint i;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glGenSamplers(%d)\n", count);
+
+   if (count < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenSamplers");
+      return;
+   }
+
+   if (!samplers)
+      return;
+
+   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->SamplerObjects, count);
+
+   /* Insert the ID and pointer to new sampler object into hash table */
+   for (i = 0; i < count; i++) {
+      struct gl_sampler_object *sampObj =
+         ctx->Driver.NewSamplerObject(ctx, first + i);
+      _mesa_HashInsert(ctx->Shared->SamplerObjects, first + i, sampObj);
+      samplers[i] = first + i;
+   }
+}
+
+
+static void GLAPIENTRY
+_mesa_DeleteSamplers(GLsizei count, const GLuint *samplers)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLsizei i;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, 0);
+
+   if (count < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteSamplers(count)");
+      return;
+   }
+
+   _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+
+   for (i = 0; i < count; i++) {
+      if (samplers[i]) {
+         struct gl_sampler_object *sampObj =
+            _mesa_lookup_samplerobj(ctx, samplers[i]);
+         if (sampObj) {
+            /* The ID is immediately freed for re-use */
+            _mesa_HashRemove(ctx->Shared->SamplerObjects, samplers[i]);
+            /* But the object exists until its reference count goes to zero */
+            _mesa_reference_sampler_object(ctx, &sampObj, NULL);
+         }
+      }
+   }
+
+   _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+}
+
+
+static GLboolean GLAPIENTRY
+_mesa_IsSampler(GLuint sampler)
+{
+   struct gl_sampler_object *sampObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+   if (sampler == 0)
+      return GL_FALSE;
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+
+   return sampObj != NULL;
+}
+
+
+static void GLAPIENTRY
+_mesa_BindSampler(GLuint unit, GLuint sampler)
+{
+   struct gl_sampler_object *sampObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (unit >= ctx->Const.MaxTextureImageUnits) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glBindSampler(unit %u)", unit);
+      return;
+   }
+
+   if (sampler == 0) {
+      /* Use the default sampler object, the one contained in the texture
+       * object.
+       */
+      sampObj = NULL;
+   }
+   else {
+      /* user-defined sampler object */
+      sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+      if (!sampObj) {
+         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindSampler(sampler)");
+         return;
+      }
+   }
+   
+   if (ctx->Texture.Unit[unit].Sampler != sampObj) {
+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+   }
+
+   /* bind new sampler */
+   _mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[unit].Sampler,
+                                  sampObj);
+}
+
+
+/**
+ * Check if a coordinate wrap mode is supported for the texture target.
+ * \return GL_TRUE if legal, GL_FALSE otherwise
+ */
+static GLboolean 
+validate_texture_wrap_mode(struct gl_context *ctx, GLenum wrap)
+{
+   const struct gl_extensions * const e = &ctx->Extensions;
+
+   switch (wrap) {
+   case GL_CLAMP:
+   case GL_CLAMP_TO_EDGE:
+   case GL_REPEAT:
+      return GL_TRUE;
+   case GL_CLAMP_TO_BORDER:
+      return e->ARB_texture_border_clamp;
+   case GL_MIRRORED_REPEAT:
+      return e->ARB_texture_mirrored_repeat;
+   case GL_MIRROR_CLAMP_EXT:
+      return e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp;
+   case GL_MIRROR_CLAMP_TO_EDGE_EXT:
+      return e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp;
+   case GL_MIRROR_CLAMP_TO_BORDER_EXT:
+      return e->EXT_texture_mirror_clamp;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * This is called just prior to changing any sampler object state.
+ */
+static INLINE void
+flush(struct gl_context *ctx)
+{
+   FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+}
+
+
+#define INVALID_PARAM 0x100
+#define INVALID_PNAME 0x101
+#define INVALID_VALUE 0x102
+
+static GLuint
+set_sampler_wrap_s(struct gl_context *ctx, struct gl_sampler_object *samp,
+                   GLint param)
+{
+   if (samp->WrapS == param)
+      return GL_FALSE;
+   if (validate_texture_wrap_mode(ctx, param)) {
+      flush(ctx);
+      samp->WrapS = param;
+      return GL_TRUE;
+   }
+   return INVALID_PARAM;
+}
+
+
+static GLuint
+set_sampler_wrap_t(struct gl_context *ctx, struct gl_sampler_object *samp,
+                   GLint param)
+{
+   if (samp->WrapT == param)
+      return GL_FALSE;
+   if (validate_texture_wrap_mode(ctx, param)) {
+      flush(ctx);
+      samp->WrapT = param;
+      return GL_TRUE;
+   }
+   return INVALID_PARAM;
+}
+
+
+static GLuint
+set_sampler_wrap_r(struct gl_context *ctx, struct gl_sampler_object *samp,
+                   GLint param)
+{
+   if (samp->WrapR == param)
+      return GL_FALSE;
+   if (validate_texture_wrap_mode(ctx, param)) {
+      flush(ctx);
+      samp->WrapR = param;
+      return GL_TRUE;
+   }
+   return INVALID_PARAM;
+}
+
+
+static GLuint
+set_sampler_min_filter(struct gl_context *ctx, struct gl_sampler_object *samp,
+                       GLint param)
+{
+   if (samp->MinFilter == param)
+      return GL_FALSE;
+
+   switch (param) {
+   case GL_NEAREST:
+   case GL_LINEAR:
+   case GL_NEAREST_MIPMAP_NEAREST:
+   case GL_LINEAR_MIPMAP_NEAREST:
+   case GL_NEAREST_MIPMAP_LINEAR:
+   case GL_LINEAR_MIPMAP_LINEAR:
+      flush(ctx);
+      samp->MinFilter = param;
+      return GL_TRUE;
+   default:
+      return INVALID_PARAM;
+   }
+}
+
+
+static GLuint
+set_sampler_mag_filter(struct gl_context *ctx, struct gl_sampler_object *samp,
+                       GLint param)
+{
+   if (samp->MagFilter == param)
+      return GL_FALSE;
+
+   switch (param) {
+   case GL_NEAREST:
+   case GL_LINEAR:
+      flush(ctx);
+      samp->MagFilter = param;
+      return GL_TRUE;
+   default:
+      return INVALID_PARAM;
+   }
+}
+
+
+static GLuint
+set_sampler_lod_bias(struct gl_context *ctx, struct gl_sampler_object *samp,
+                     GLfloat param)
+{
+   if (samp->LodBias == param)
+      return GL_FALSE;
+
+   flush(ctx);
+   samp->LodBias = param;
+   return GL_TRUE;
+}
+
+
+static GLuint
+set_sampler_border_colorf(struct gl_context *ctx,
+                          struct gl_sampler_object *samp,
+                          const GLfloat params[4])
+{
+   flush(ctx);
+   samp->BorderColor.f[RCOMP] = params[0];
+   samp->BorderColor.f[GCOMP] = params[1];
+   samp->BorderColor.f[BCOMP] = params[2];
+   samp->BorderColor.f[ACOMP] = params[3];
+   return GL_TRUE;
+}
+
+
+static GLuint
+set_sampler_border_colori(struct gl_context *ctx,
+                          struct gl_sampler_object *samp,
+                          const GLint params[4])
+{
+   flush(ctx);
+   samp->BorderColor.i[RCOMP] = params[0];
+   samp->BorderColor.i[GCOMP] = params[1];
+   samp->BorderColor.i[BCOMP] = params[2];
+   samp->BorderColor.i[ACOMP] = params[3];
+   return GL_TRUE;
+}
+
+
+static GLuint
+set_sampler_border_colorui(struct gl_context *ctx,
+                           struct gl_sampler_object *samp,
+                           const GLuint params[4])
+{
+   flush(ctx);
+   samp->BorderColor.ui[RCOMP] = params[0];
+   samp->BorderColor.ui[GCOMP] = params[1];
+   samp->BorderColor.ui[BCOMP] = params[2];
+   samp->BorderColor.ui[ACOMP] = params[3];
+   return GL_TRUE;
+}
+
+
+static GLuint
+set_sampler_min_lod(struct gl_context *ctx, struct gl_sampler_object *samp,
+                    GLfloat param)
+{
+   if (samp->MinLod == param)
+      return GL_FALSE;
+
+   flush(ctx);
+   samp->MinLod = param;
+   return GL_TRUE;
+}
+
+
+static GLuint
+set_sampler_max_lod(struct gl_context *ctx, struct gl_sampler_object *samp,
+                    GLint param)
+{
+   if (samp->MaxLod == param)
+      return GL_FALSE;
+
+   flush(ctx);
+   samp->MaxLod = param;
+   return GL_TRUE;
+}
+
+
+static GLuint
+set_sampler_compare_mode(struct gl_context *ctx,
+                         struct gl_sampler_object *samp, GLint param)
+{
+   if (!ctx->Extensions.ARB_shadow)
+      return INVALID_PNAME;
+
+   if (samp->CompareMode == param)
+      return GL_FALSE;
+
+   if (param == GL_NONE ||
+       param == GL_COMPARE_R_TO_TEXTURE_ARB) {
+      flush(ctx);
+      samp->CompareMode = param;
+      return GL_TRUE;
+   }
+
+   return INVALID_PARAM;
+}
+
+
+static GLuint
+set_sampler_compare_func(struct gl_context *ctx,
+                         struct gl_sampler_object *samp, GLint param)
+{
+   if (!ctx->Extensions.ARB_shadow)
+      return INVALID_PNAME;
+
+   if (samp->CompareFunc == param)
+      return GL_FALSE;
+
+   switch (param) {
+   case GL_LEQUAL:
+   case GL_GEQUAL:
+      flush(ctx);
+      samp->CompareFunc = param;
+      return GL_TRUE;
+   case GL_EQUAL:
+   case GL_NOTEQUAL:
+   case GL_LESS:
+   case GL_GREATER:
+   case GL_ALWAYS:
+   case GL_NEVER:
+      if (ctx->Extensions.EXT_shadow_funcs) {
+         flush(ctx);
+         samp->CompareFunc = param;
+         return GL_TRUE;
+      }
+      /* fall-through */
+   default:
+      return INVALID_PARAM;
+   }
+}
+
+
+static GLuint
+set_sampler_max_anisotropy(struct gl_context *ctx,
+                           struct gl_sampler_object *samp, GLfloat param)
+{
+   if (!ctx->Extensions.EXT_texture_filter_anisotropic)
+      return INVALID_PNAME;
+
+   if (samp->MaxAnisotropy == param)
+      return GL_FALSE;
+
+   if (param < 1.0)
+      return INVALID_VALUE;
+
+   flush(ctx);
+   /* clamp to max, that's what NVIDIA does */
+   samp->MaxAnisotropy = MIN2(param, ctx->Const.MaxTextureMaxAnisotropy);
+   return GL_TRUE;
+}
+
+
+static void GLAPIENTRY
+_mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param)
+{
+   struct gl_sampler_object *sampObj;
+   GLuint res;
+   GET_CURRENT_CONTEXT(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteri(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      res = set_sampler_wrap_s(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_WRAP_T:
+      res = set_sampler_wrap_t(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_WRAP_R:
+      res = set_sampler_wrap_r(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      res = set_sampler_min_filter(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      res = set_sampler_mag_filter(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) param);
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) param);
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) param);
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      res = set_sampler_compare_mode(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      res = set_sampler_compare_func(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) param);
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      /* fall-through */
+   default:
+      res = INVALID_PNAME;
+   }
+
+   switch (res) {
+   case GL_FALSE:
+      /* no change */
+      break;
+   case GL_TRUE:
+      /* state change - we do nothing special at this time */
+      break;
+   case INVALID_PNAME:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteri(pname=%s)\n",
+                  _mesa_lookup_enum_by_nr(pname));
+      break;
+   case INVALID_PARAM:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteri(param=%d)\n",
+                  param);
+      break;
+   case INVALID_VALUE:
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteri(param=%d)\n",
+                  param);
+      break;
+   default:
+      ;
+   }
+}
+
+
+static void GLAPIENTRY
+_mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param)
+{
+   struct gl_sampler_object *sampObj;
+   GLuint res;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterf(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      res = set_sampler_wrap_s(ctx, sampObj, (GLint) param);
+      break;
+   case GL_TEXTURE_WRAP_T:
+      res = set_sampler_wrap_t(ctx, sampObj, (GLint) param);
+      break;
+   case GL_TEXTURE_WRAP_R:
+      res = set_sampler_wrap_r(ctx, sampObj, (GLint) param);
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      res = set_sampler_min_filter(ctx, sampObj, (GLint) param);
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      res = set_sampler_mag_filter(ctx, sampObj, (GLint) param);
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      res = set_sampler_min_lod(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      res = set_sampler_max_lod(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      res = set_sampler_lod_bias(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      res = set_sampler_compare_mode(ctx, sampObj, (GLint) param);
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      res = set_sampler_compare_func(ctx, sampObj, (GLint) param);
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      res = set_sampler_max_anisotropy(ctx, sampObj, param);
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      /* fall-through */
+   default:
+      res = INVALID_PNAME;
+   }
+
+   switch (res) {
+   case GL_FALSE:
+      /* no change */
+      break;
+   case GL_TRUE:
+      /* state change - we do nothing special at this time */
+      break;
+   case INVALID_PNAME:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterf(pname=%s)\n",
+                  _mesa_lookup_enum_by_nr(pname));
+      break;
+   case INVALID_PARAM:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterf(param=%f)\n",
+                  param);
+      break;
+   case INVALID_VALUE:
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterf(param=%f)\n",
+                  param);
+      break;
+   default:
+      ;
+   }
+}
+
+static void GLAPIENTRY
+_mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params)
+{
+   struct gl_sampler_object *sampObj;
+   GLuint res;
+   GET_CURRENT_CONTEXT(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteriv(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      res = set_sampler_wrap_s(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_WRAP_T:
+      res = set_sampler_wrap_t(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_WRAP_R:
+      res = set_sampler_wrap_r(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      res = set_sampler_min_filter(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      res = set_sampler_mag_filter(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      res = set_sampler_compare_mode(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      res = set_sampler_compare_func(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      {
+         GLfloat c[4];
+         c[0] = INT_TO_FLOAT(params[0]);
+         c[1] = INT_TO_FLOAT(params[1]);
+         c[2] = INT_TO_FLOAT(params[2]);
+         c[3] = INT_TO_FLOAT(params[3]);
+         res = set_sampler_border_colorf(ctx, sampObj, c);
+      }
+      break;
+   default:
+      res = INVALID_PNAME;
+   }
+
+   switch (res) {
+   case GL_FALSE:
+      /* no change */
+      break;
+   case GL_TRUE:
+      /* state change - we do nothing special at this time */
+      break;
+   case INVALID_PNAME:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteriv(pname=%s)\n",
+                  _mesa_lookup_enum_by_nr(pname));
+      break;
+   case INVALID_PARAM:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteriv(param=%d)\n",
+                  params[0]);
+      break;
+   case INVALID_VALUE:
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteriv(param=%d)\n",
+                  params[0]);
+      break;
+   default:
+      ;
+   }
+}
+
+static void GLAPIENTRY
+_mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params)
+{
+   struct gl_sampler_object *sampObj;
+   GLuint res;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterfv(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      res = set_sampler_wrap_s(ctx, sampObj, (GLint) params[0]);
+      break;
+   case GL_TEXTURE_WRAP_T:
+      res = set_sampler_wrap_t(ctx, sampObj, (GLint) params[0]);
+      break;
+   case GL_TEXTURE_WRAP_R:
+      res = set_sampler_wrap_r(ctx, sampObj, (GLint) params[0]);
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      res = set_sampler_min_filter(ctx, sampObj, (GLint) params[0]);
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      res = set_sampler_mag_filter(ctx, sampObj, (GLint) params[0]);
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      res = set_sampler_min_lod(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      res = set_sampler_max_lod(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      res = set_sampler_lod_bias(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      res = set_sampler_compare_mode(ctx, sampObj, (GLint) params[0]);
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      res = set_sampler_compare_func(ctx, sampObj, (GLint) params[0]);
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      res = set_sampler_max_anisotropy(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      res = set_sampler_border_colorf(ctx, sampObj, params);
+      break;
+   default:
+      res = INVALID_PNAME;
+   }
+
+   switch (res) {
+   case GL_FALSE:
+      /* no change */
+      break;
+   case GL_TRUE:
+      /* state change - we do nothing special at this time */
+      break;
+   case INVALID_PNAME:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterfv(pname=%s)\n",
+                  _mesa_lookup_enum_by_nr(pname));
+      break;
+   case INVALID_PARAM:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterfv(param=%f)\n",
+                  params[0]);
+      break;
+   case INVALID_VALUE:
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterfv(param=%f)\n",
+                  params[0]);
+      break;
+   default:
+      ;
+   }
+}
+
+static void GLAPIENTRY
+_mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params)
+{
+   struct gl_sampler_object *sampObj;
+   GLuint res;
+   GET_CURRENT_CONTEXT(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIiv(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      res = set_sampler_wrap_s(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_WRAP_T:
+      res = set_sampler_wrap_t(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_WRAP_R:
+      res = set_sampler_wrap_r(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      res = set_sampler_min_filter(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      res = set_sampler_mag_filter(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      res = set_sampler_compare_mode(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      res = set_sampler_compare_func(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      res = set_sampler_border_colori(ctx, sampObj, params);
+      break;
+   default:
+      res = INVALID_PNAME;
+   }
+
+   switch (res) {
+   case GL_FALSE:
+      /* no change */
+      break;
+   case GL_TRUE:
+      /* state change - we do nothing special at this time */
+      break;
+   case INVALID_PNAME:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIiv(pname=%s)\n",
+                  _mesa_lookup_enum_by_nr(pname));
+      break;
+   case INVALID_PARAM:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIiv(param=%d)\n",
+                  params[0]);
+      break;
+   case INVALID_VALUE:
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIiv(param=%d)\n",
+                  params[0]);
+      break;
+   default:
+      ;
+   }
+}
+
+
+static void GLAPIENTRY
+_mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params)
+{
+   struct gl_sampler_object *sampObj;
+   GLuint res;
+   GET_CURRENT_CONTEXT(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIuiv(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      res = set_sampler_wrap_s(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_WRAP_T:
+      res = set_sampler_wrap_t(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_WRAP_R:
+      res = set_sampler_wrap_r(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      res = set_sampler_min_filter(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      res = set_sampler_mag_filter(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      res = set_sampler_compare_mode(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      res = set_sampler_compare_func(ctx, sampObj, params[0]);
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      res = set_sampler_border_colorui(ctx, sampObj, params);
+      break;
+   default:
+      res = INVALID_PNAME;
+   }
+
+   switch (res) {
+   case GL_FALSE:
+      /* no change */
+      break;
+   case GL_TRUE:
+      /* state change - we do nothing special at this time */
+      break;
+   case INVALID_PNAME:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIuiv(pname=%s)\n",
+                  _mesa_lookup_enum_by_nr(pname));
+      break;
+   case INVALID_PARAM:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIuiv(param=%u)\n",
+                  params[0]);
+      break;
+   case INVALID_VALUE:
+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIuiv(param=%u)\n",
+                  params[0]);
+      break;
+   default:
+      ;
+   }
+}
+
+
+static void GLAPIENTRY
+_mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params)
+{
+   struct gl_sampler_object *sampObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGetSamplerParameteriv(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      *params = sampObj->WrapS;
+      break;
+   case GL_TEXTURE_WRAP_T:
+      *params = sampObj->WrapT;
+      break;
+   case GL_TEXTURE_WRAP_R:
+      *params = sampObj->WrapR;
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      *params = sampObj->MinFilter;
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      *params = sampObj->MagFilter;
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      *params = (GLint) sampObj->MinLod;
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      *params = (GLint) sampObj->MaxLod;
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      *params = (GLint) sampObj->LodBias;
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      if (!ctx->Extensions.ARB_shadow)
+         goto invalid_pname;
+      *params = sampObj->CompareMode;
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      if (!ctx->Extensions.ARB_shadow)
+         goto invalid_pname;
+      *params = sampObj->CompareFunc;
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      *params = (GLint) sampObj->MaxAnisotropy;
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      params[0] = FLOAT_TO_INT(sampObj->BorderColor.f[0]);
+      params[1] = FLOAT_TO_INT(sampObj->BorderColor.f[1]);
+      params[2] = FLOAT_TO_INT(sampObj->BorderColor.f[2]);
+      params[3] = FLOAT_TO_INT(sampObj->BorderColor.f[3]);
+      break;
+   default:
+      goto invalid_pname;
+   }
+   return;
+
+invalid_pname:
+   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameteriv(pname=%s)",
+               _mesa_lookup_enum_by_nr(pname));
+}
+
+
+static void GLAPIENTRY
+_mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params)
+{
+   struct gl_sampler_object *sampObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGetSamplerParameterfv(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      *params = (GLfloat) sampObj->WrapS;
+      break;
+   case GL_TEXTURE_WRAP_T:
+      *params = (GLfloat) sampObj->WrapT;
+      break;
+   case GL_TEXTURE_WRAP_R:
+      *params = (GLfloat) sampObj->WrapR;
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      *params = (GLfloat) sampObj->MinFilter;
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      *params = (GLfloat) sampObj->MagFilter;
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      *params = sampObj->MinLod;
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      *params = sampObj->MaxLod;
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      *params = sampObj->LodBias;
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      if (!ctx->Extensions.ARB_shadow)
+         goto invalid_pname;
+      *params = (GLfloat) sampObj->CompareMode;
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      if (!ctx->Extensions.ARB_shadow)
+         goto invalid_pname;
+      *params = (GLfloat) sampObj->CompareFunc;
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      *params = sampObj->MaxAnisotropy;
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      params[0] = sampObj->BorderColor.f[0];
+      params[1] = sampObj->BorderColor.f[1];
+      params[2] = sampObj->BorderColor.f[2];
+      params[3] = sampObj->BorderColor.f[3];
+      break;
+   default:
+      goto invalid_pname;
+   }
+   return;
+
+invalid_pname:
+   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterfv(pname=%s)",
+               _mesa_lookup_enum_by_nr(pname));
+}
+
+
+static void GLAPIENTRY
+_mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params)
+{
+   struct gl_sampler_object *sampObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetSamplerParameterIiv(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      *params = sampObj->WrapS;
+      break;
+   case GL_TEXTURE_WRAP_T:
+      *params = sampObj->WrapT;
+      break;
+   case GL_TEXTURE_WRAP_R:
+      *params = sampObj->WrapR;
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      *params = sampObj->MinFilter;
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      *params = sampObj->MagFilter;
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      *params = (GLint) sampObj->MinLod;
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      *params = (GLint) sampObj->MaxLod;
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      *params = (GLint) sampObj->LodBias;
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      if (!ctx->Extensions.ARB_shadow)
+         goto invalid_pname;
+      *params = sampObj->CompareMode;
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      if (!ctx->Extensions.ARB_shadow)
+         goto invalid_pname;
+      *params = sampObj->CompareFunc;
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      *params = (GLint) sampObj->MaxAnisotropy;
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      params[0] = sampObj->BorderColor.i[0];
+      params[1] = sampObj->BorderColor.i[1];
+      params[2] = sampObj->BorderColor.i[2];
+      params[3] = sampObj->BorderColor.i[3];
+      break;
+   default:
+      goto invalid_pname;
+   }
+   return;
+
+invalid_pname:
+   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterIiv(pname=%s)",
+               _mesa_lookup_enum_by_nr(pname));
+}
+
+
+static void GLAPIENTRY
+_mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params)
+{
+   struct gl_sampler_object *sampObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
+   if (!sampObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetSamplerParameterIuiv(sampler %u)",
+                  sampler);
+      return;
+   }
+
+   switch (pname) {
+   case GL_TEXTURE_WRAP_S:
+      *params = sampObj->WrapS;
+      break;
+   case GL_TEXTURE_WRAP_T:
+      *params = sampObj->WrapT;
+      break;
+   case GL_TEXTURE_WRAP_R:
+      *params = sampObj->WrapR;
+      break;
+   case GL_TEXTURE_MIN_FILTER:
+      *params = sampObj->MinFilter;
+      break;
+   case GL_TEXTURE_MAG_FILTER:
+      *params = sampObj->MagFilter;
+      break;
+   case GL_TEXTURE_MIN_LOD:
+      *params = (GLuint) sampObj->MinLod;
+      break;
+   case GL_TEXTURE_MAX_LOD:
+      *params = (GLuint) sampObj->MaxLod;
+      break;
+   case GL_TEXTURE_LOD_BIAS:
+      *params = (GLuint) sampObj->LodBias;
+      break;
+   case GL_TEXTURE_COMPARE_MODE:
+      if (!ctx->Extensions.ARB_shadow)
+         goto invalid_pname;
+      *params = sampObj->CompareMode;
+      break;
+   case GL_TEXTURE_COMPARE_FUNC:
+      if (!ctx->Extensions.ARB_shadow)
+         goto invalid_pname;
+      *params = sampObj->CompareFunc;
+      break;
+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      *params = (GLuint) sampObj->MaxAnisotropy;
+      break;
+   case GL_TEXTURE_BORDER_COLOR:
+      params[0] = sampObj->BorderColor.ui[0];
+      params[1] = sampObj->BorderColor.ui[1];
+      params[2] = sampObj->BorderColor.ui[2];
+      params[3] = sampObj->BorderColor.ui[3];
+      break;
+   default:
+      goto invalid_pname;
+   }
+   return;
+
+invalid_pname:
+   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterIuiv(pname=%s)",
+               _mesa_lookup_enum_by_nr(pname));
+}
+
+
+void
+_mesa_init_sampler_object_functions(struct dd_function_table *driver)
+{
+   driver->NewSamplerObject = _mesa_new_sampler_object;
+   driver->DeleteSamplerObject = _mesa_delete_sampler_object;
+}
+
+
+void
+_mesa_init_sampler_object_dispatch(struct _glapi_table *disp)
+{
+   SET_GenSamplers(disp, _mesa_GenSamplers);
+   SET_DeleteSamplers(disp, _mesa_DeleteSamplers);
+   SET_IsSampler(disp, _mesa_IsSampler);
+   SET_BindSampler(disp, _mesa_BindSampler);
+   SET_SamplerParameteri(disp, _mesa_SamplerParameteri);
+   SET_SamplerParameterf(disp, _mesa_SamplerParameterf);
+   SET_SamplerParameteriv(disp, _mesa_SamplerParameteriv);
+   SET_SamplerParameterfv(disp, _mesa_SamplerParameterfv);
+   SET_SamplerParameterIiv(disp, _mesa_SamplerParameterIiv);
+   SET_SamplerParameterIuiv(disp, _mesa_SamplerParameterIuiv);
+   SET_GetSamplerParameteriv(disp, _mesa_GetSamplerParameteriv);
+   SET_GetSamplerParameterfv(disp, _mesa_GetSamplerParameterfv);
+   SET_GetSamplerParameterIiv(disp, _mesa_GetSamplerParameterIiv);
+   SET_GetSamplerParameterIuiv(disp, _mesa_GetSamplerParameterIuiv);
+}
diff --git a/src/mesa/main/samplerobj.h b/src/mesa/main/samplerobj.h
new file mode 100644
index 0000000..ed495c3
--- /dev/null
+++ b/src/mesa/main/samplerobj.h
@@ -0,0 +1,54 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2011  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+
+#ifndef SAMPLEROBJ_H
+#define SAMPLEROBJ_H
+
+struct dd_function_table;
+
+
+extern void
+_mesa_reference_sampler_object(struct gl_context *ctx,
+                               struct gl_sampler_object **ptr,
+                               struct gl_sampler_object *samp);
+
+extern void
+_mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name);
+
+extern struct gl_sampler_object *
+_mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
+
+extern void
+_mesa_delete_sampler_object(struct gl_context *ctx,
+                            struct gl_sampler_object *sampObj);
+
+extern void
+_mesa_init_sampler_object_functions(struct dd_function_table *driver);
+
+extern void
+_mesa_init_sampler_object_dispatch(struct _glapi_table *disp);
+
+
+#endif /* SAMPLEROBJ_H */



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