Merge branch 'origin' into i915-unification
[mesa.git] / src / mesa / main / teximage.c
index 02d2aa362cbcfaaa20c28b733e87b0b1edfa724b..f315c3de74e1b1be0d82761c620cb51794c038c2 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5
+ * Version:  6.5.1
  *
  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  *
@@ -73,11 +73,11 @@ _mesa_free_texmemory(void *m)
 #if 0
 static void PrintTexture(GLcontext *ctx, const struct gl_texture_image *img)
 {
-#if CHAN_TYPE == GL_FLOAT
-   _mesa_problem(NULL, "PrintTexture doesn't support float channels");
+#if CHAN_TYPE != GL_UNSIGNED_BYTE
+   _mesa_problem(NULL, "PrintTexture not supported");
 #else
    GLuint i, j, c;
-   const GLchan *data = (const GLchan *) img->Data;
+   const GLubyte *data = (const GLubyte *) img->Data;
 
    if (!data) {
       _mesa_printf("No texture data\n");
@@ -348,6 +348,36 @@ _mesa_base_tex_format( GLcontext *ctx, GLint internalFormat )
       }
    }
 
+#if FEATURE_EXT_texture_sRGB
+   if (ctx->Extensions.EXT_texture_sRGB) {
+      switch (internalFormat) {
+      case GL_SRGB_EXT:
+      case GL_SRGB8_EXT:
+      case GL_COMPRESSED_SRGB_EXT:
+      case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+         return GL_RGB;
+      case GL_SRGB_ALPHA_EXT:
+      case GL_SRGB8_ALPHA8_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
+         return GL_RGBA;
+      case GL_SLUMINANCE_ALPHA_EXT:
+      case GL_SLUMINANCE8_ALPHA8_EXT:
+      case GL_COMPRESSED_SLUMINANCE_EXT:
+      case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
+         return GL_LUMINANCE_ALPHA;
+      case GL_SLUMINANCE_EXT:
+      case GL_SLUMINANCE8_EXT:
+         return GL_LUMINANCE;
+      default:
+            ; /* fallthrough */
+      }
+   }
+
+#endif /* FEATURE_EXT_texture_sRGB */
+
    return -1; /* error */
 }
 
@@ -440,6 +470,24 @@ is_color_format(GLenum format)
       case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
       case GL_COMPRESSED_RGB_FXT1_3DFX:
       case GL_COMPRESSED_RGBA_FXT1_3DFX:
+#if FEATURE_EXT_texture_sRGB
+      case GL_SRGB_EXT:
+      case GL_SRGB8_EXT:
+      case GL_SRGB_ALPHA_EXT:
+      case GL_SRGB8_ALPHA8_EXT:
+      case GL_SLUMINANCE_ALPHA_EXT:
+      case GL_SLUMINANCE8_ALPHA8_EXT:
+      case GL_SLUMINANCE_EXT:
+      case GL_SLUMINANCE8_EXT:
+      case GL_COMPRESSED_SRGB_EXT:
+      case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
+      case GL_COMPRESSED_SLUMINANCE_EXT:
+      case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
+#endif /* FEATURE_EXT_texture_sRGB */
          return GL_TRUE;
       case GL_YCBCR_MESA:  /* not considered to be RGB */
       default:
@@ -581,6 +629,8 @@ _mesa_set_tex_image(struct gl_texture_object *tObj,
       case GL_TEXTURE_1D:
       case GL_TEXTURE_2D:
       case GL_TEXTURE_3D:
+      case GL_TEXTURE_1D_ARRAY_EXT:
+      case GL_TEXTURE_2D_ARRAY_EXT:
          tObj->Image[0][level] = texImage;
          break;
       case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
@@ -658,9 +708,12 @@ _mesa_free_texture_image_data(GLcontext *ctx,
 void
 _mesa_delete_texture_image( GLcontext *ctx, struct gl_texture_image *texImage )
 {
-   if (texImage->Data) {
-      ctx->Driver.FreeTexImageData( ctx, texImage );
-   }
+   /* Free texImage->Data and/or any other driver-specific texture
+    * image storage.
+    */
+   ASSERT(ctx->Driver.FreeTexImageData);
+   ctx->Driver.FreeTexImageData( ctx, texImage );
+
    ASSERT(texImage->Data == NULL);
    if (texImage->ImageOffsets)
       _mesa_free(texImage->ImageOffsets);
@@ -682,7 +735,9 @@ _mesa_is_proxy_texture(GLenum target)
            target == GL_PROXY_TEXTURE_2D ||
            target == GL_PROXY_TEXTURE_3D ||
            target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||
-           target == GL_PROXY_TEXTURE_RECTANGLE_NV);
+           target == GL_PROXY_TEXTURE_RECTANGLE_NV ||
+           target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||
+           target == GL_PROXY_TEXTURE_2D_ARRAY_EXT);
 }
 
 
@@ -732,6 +787,18 @@ _mesa_select_tex_object(GLcontext *ctx, const struct gl_texture_unit *texUnit,
       case GL_PROXY_TEXTURE_RECTANGLE_NV:
          return ctx->Extensions.NV_texture_rectangle
                 ? ctx->Texture.ProxyRect : NULL;
+      case GL_TEXTURE_1D_ARRAY_EXT:
+         return ctx->Extensions.MESA_texture_array
+                ? texUnit->Current1DArray : NULL;
+      case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+         return ctx->Extensions.MESA_texture_array
+                ? ctx->Texture.Proxy1DArray : NULL;
+      case GL_TEXTURE_2D_ARRAY_EXT:
+         return ctx->Extensions.MESA_texture_array
+                ? texUnit->Current2DArray : NULL;
+      case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+         return ctx->Extensions.MESA_texture_array
+                ? ctx->Texture.Proxy2DArray : NULL;
       default:
          _mesa_problem(NULL, "bad target in _mesa_select_tex_object()");
          return NULL;
@@ -753,24 +820,23 @@ _mesa_select_tex_object(GLcontext *ctx, const struct gl_texture_unit *texUnit,
  * \sa gl_texture_unit.
  */
 struct gl_texture_image *
-_mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_unit *texUnit,
-                       GLenum target, GLint level)
+_mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_object *texObj,
+                      GLenum target, GLint level)
 {
-   ASSERT(texUnit);
-   ASSERT(level < MAX_TEXTURE_LEVELS);
+   ASSERT(texObj);
+
+   if (level < 0 || level >= MAX_TEXTURE_LEVELS) 
+      return NULL;
+
    switch (target) {
       case GL_TEXTURE_1D:
-         return texUnit->Current1D->Image[0][level];
       case GL_PROXY_TEXTURE_1D:
-         return ctx->Texture.Proxy1D->Image[0][level];
       case GL_TEXTURE_2D:
-         return texUnit->Current2D->Image[0][level];
       case GL_PROXY_TEXTURE_2D:
-         return ctx->Texture.Proxy2D->Image[0][level];
       case GL_TEXTURE_3D:
-         return texUnit->Current3D->Image[0][level];
       case GL_PROXY_TEXTURE_3D:
-         return ctx->Texture.Proxy3D->Image[0][level];
+         return texObj->Image[0][level];
+
       case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
       case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
       case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
@@ -780,33 +846,32 @@ _mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_unit *texUnit,
          if (ctx->Extensions.ARB_texture_cube_map) {
            GLuint face = ((GLuint) target - 
                           (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
-            return texUnit->CurrentCubeMap->Image[face][level];
+            return texObj->Image[face][level];
         }
          else
             return NULL;
+
       case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
          if (ctx->Extensions.ARB_texture_cube_map)
-            return ctx->Texture.ProxyCubeMap->Image[0][level];
+            return texObj->Image[0][level];
          else
             return NULL;
+
       case GL_TEXTURE_RECTANGLE_NV:
-         if (ctx->Extensions.NV_texture_rectangle) {
-            ASSERT(level == 0);
-            return texUnit->CurrentRect->Image[0][level];
-         }
-         else {
-            return NULL;
-         }
       case GL_PROXY_TEXTURE_RECTANGLE_NV:
-         if (ctx->Extensions.NV_texture_rectangle) {
-            ASSERT(level == 0);
-            return ctx->Texture.ProxyRect->Image[0][level];
-         }
-         else {
+         if (ctx->Extensions.NV_texture_rectangle && level == 0) 
+            return texObj->Image[0][level];
+         else 
             return NULL;
-         }
+
+      case GL_TEXTURE_1D_ARRAY_EXT:
+      case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+      case GL_TEXTURE_2D_ARRAY_EXT:
+      case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+         return (ctx->Extensions.MESA_texture_array)
+            ? texObj->Image[0][level] : NULL;
+
       default:
-         _mesa_problem(ctx, "bad target in _mesa_select_tex_image()");
          return NULL;
    }
 }
@@ -818,22 +883,25 @@ _mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_unit *texUnit,
  * out of memory.
  */
 struct gl_texture_image *
-_mesa_get_tex_image(GLcontext *ctx, const struct gl_texture_unit *texUnit,
+_mesa_get_tex_image(GLcontext *ctx, struct gl_texture_object *texObj,
                     GLenum target, GLint level)
 {
    struct gl_texture_image *texImage;
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
+
+   if (!texObj)
+      return NULL;
+   
+   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
    if (!texImage) {
-      struct gl_texture_object *texObj;
       texImage = ctx->Driver.NewTextureImage(ctx);
       if (!texImage) {
          _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation");
          return NULL;
       }
-      texObj = _mesa_select_tex_object(ctx, texUnit, target);
-      ASSERT(texObj);
+
       _mesa_set_tex_image(texObj, target, level, texImage);
    }
+
    return texImage;
 }
 
@@ -928,6 +996,36 @@ _mesa_get_proxy_tex_image(GLcontext *ctx, GLenum target, GLint level)
          texImage->TexObject = ctx->Texture.ProxyRect;
       }
       return texImage;
+   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+      if (level >= ctx->Const.MaxTextureLevels)
+         return NULL;
+      texImage = ctx->Texture.Proxy1DArray->Image[0][level];
+      if (!texImage) {
+         texImage = ctx->Driver.NewTextureImage(ctx);
+         if (!texImage) {
+            _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");
+            return NULL;
+         }
+         ctx->Texture.Proxy1DArray->Image[0][level] = texImage;
+         /* Set the 'back' pointer */
+         texImage->TexObject = ctx->Texture.Proxy1DArray;
+      }
+      return texImage;
+   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+      if (level >= ctx->Const.MaxTextureLevels)
+         return NULL;
+      texImage = ctx->Texture.Proxy2DArray->Image[0][level];
+      if (!texImage) {
+         texImage = ctx->Driver.NewTextureImage(ctx);
+         if (!texImage) {
+            _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");
+            return NULL;
+         }
+         ctx->Texture.Proxy2DArray->Image[0][level] = texImage;
+         /* Set the 'back' pointer */
+         texImage->TexObject = ctx->Texture.Proxy2DArray;
+      }
+      return texImage;
    default:
       return NULL;
    }
@@ -953,6 +1051,10 @@ _mesa_max_texture_levels(GLcontext *ctx, GLenum target)
    case GL_PROXY_TEXTURE_1D:
    case GL_TEXTURE_2D:
    case GL_PROXY_TEXTURE_2D:
+   case GL_TEXTURE_1D_ARRAY_EXT:
+   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+   case GL_TEXTURE_2D_ARRAY_EXT:
+   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
       return ctx->Const.MaxTextureLevels;
    case GL_TEXTURE_3D:
    case GL_PROXY_TEXTURE_3D:
@@ -1095,9 +1197,9 @@ _mesa_init_teximage_fields(GLcontext *ctx, GLenum target,
    GLint i;
 
    ASSERT(img);
-   ASSERT(width > 0);
-   ASSERT(height > 0);
-   ASSERT(depth > 0);
+   ASSERT(width >= 0);
+   ASSERT(height >= 0);
+   ASSERT(depth >= 0);
 
    img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );
    ASSERT(img->_BaseFormat > 0);
@@ -1247,6 +1349,36 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
          return GL_FALSE;
       }
       return GL_TRUE;
+   case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
+      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+      if (width < 2 * border || width > 2 + maxSize ||
+          (!ctx->Extensions.ARB_texture_non_power_of_two &&
+           _mesa_bitcount(width - 2 * border) != 1) ||
+          level >= ctx->Const.MaxTextureLevels) {
+         /* bad width or level */
+         return GL_FALSE;
+      }
+
+      if (height < 1 || height > ctx->Const.MaxArrayTextureLayers) {
+         return GL_FALSE;
+      }
+      return GL_TRUE;
+   case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
+      maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+      if (width < 2 * border || width > 2 + maxSize ||
+          (!ctx->Extensions.ARB_texture_non_power_of_two &&
+           _mesa_bitcount(width - 2 * border) != 1) ||
+          height < 2 * border || height > 2 + maxSize ||
+          (!ctx->Extensions.ARB_texture_non_power_of_two &&
+           _mesa_bitcount(height - 2 * border) != 1) ||
+          level >= ctx->Const.MaxTextureLevels) {
+         /* bad width or height or level */
+         return GL_FALSE;
+      }
+      if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers) {
+         return GL_FALSE;
+      }
+      return GL_TRUE;
    default:
       _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage");
       return GL_FALSE;
@@ -1254,6 +1386,23 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
 }
 
 
+/**
+ * Helper function to determine whether a target supports compressed textures
+ */
+static GLboolean
+target_can_be_compressed(GLcontext *ctx, GLenum target)
+{
+   return (((target == GL_TEXTURE_2D || target == GL_PROXY_TEXTURE_2D))
+           || ((ctx->Extensions.ARB_texture_cube_map &&
+                (target == GL_PROXY_TEXTURE_CUBE_MAP ||
+                 (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
+                  target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))))
+           || ((ctx->Extensions.MESA_texture_array &&
+                ((target == GL_PROXY_TEXTURE_2D_ARRAY_EXT) ||
+                 (target == GL_TEXTURE_2D_ARRAY_EXT)))));
+}
+
+
 /**
  * Test the glTexImage[123]D() parameters for errors.
  * 
@@ -1284,8 +1433,9 @@ texture_error_check( GLcontext *ctx, GLenum target,
                      GLint depth, GLint border )
 {
    const GLboolean isProxy = _mesa_is_proxy_texture(target);
-   GLboolean sizeOK;
+   GLboolean sizeOK = GL_TRUE;
    GLboolean colorFormat, indexFormat;
+   GLenum proxy_target;
 
    /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
    if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
@@ -1320,10 +1470,9 @@ texture_error_check( GLcontext *ctx, GLenum target,
     */
    if (dimensions == 1) {
       if (target == GL_PROXY_TEXTURE_1D || target == GL_TEXTURE_1D) {
-         sizeOK = ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_1D,
-                                                level, internalFormat,
-                                                format, type,
-                                                width, 1, 1, border);
+         proxy_target = GL_PROXY_TEXTURE_1D;
+         height = 1;
+         width = 1;
       }
       else {
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage1D(target)" );
@@ -1331,11 +1480,9 @@ texture_error_check( GLcontext *ctx, GLenum target,
       }
    }
    else if (dimensions == 2) {
+      depth = 1;
       if (target == GL_PROXY_TEXTURE_2D || target == GL_TEXTURE_2D) {
-         sizeOK = ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_2D,
-                                                level, internalFormat,
-                                                format, type,
-                                                width, height, 1, border);
+         proxy_target = GL_PROXY_TEXTURE_2D;
       }
       else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||
                (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
@@ -1344,10 +1491,8 @@ texture_error_check( GLcontext *ctx, GLenum target,
             _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage2D(target)");
             return GL_TRUE;
          }
-         sizeOK = (width == height) &&
-            ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_CUBE_MAP_ARB,
-                                          level, internalFormat, format, type,
-                                          width, height, 1, border);
+         proxy_target = GL_PROXY_TEXTURE_CUBE_MAP_ARB;
+         sizeOK = (width == height);
       }
       else if (target == GL_PROXY_TEXTURE_RECTANGLE_NV ||
                target == GL_TEXTURE_RECTANGLE_NV) {
@@ -1355,11 +1500,11 @@ texture_error_check( GLcontext *ctx, GLenum target,
             _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage2D(target)");
             return GL_TRUE;
          }
-         sizeOK = ctx->Driver.TestProxyTexImage(ctx,
-                                                GL_PROXY_TEXTURE_RECTANGLE_NV,
-                                                level, internalFormat,
-                                                format, type,
-                                                width, height, 1, border);
+         proxy_target = GL_PROXY_TEXTURE_RECTANGLE_NV;
+      }
+      else if (target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||
+               target == GL_TEXTURE_1D_ARRAY_EXT) {
+         proxy_target = GL_PROXY_TEXTURE_1D_ARRAY_EXT;
       }
       else {
          _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage2D(target)");
@@ -1368,10 +1513,11 @@ texture_error_check( GLcontext *ctx, GLenum target,
    }
    else if (dimensions == 3) {
       if (target == GL_PROXY_TEXTURE_3D || target == GL_TEXTURE_3D) {
-         sizeOK = ctx->Driver.TestProxyTexImage(ctx, GL_PROXY_TEXTURE_3D,
-                                                level, internalFormat,
-                                                format, type,
-                                                width, height, depth, border);
+         proxy_target = GL_PROXY_TEXTURE_3D;
+      }
+      else if (target == GL_PROXY_TEXTURE_2D_ARRAY_EXT ||
+               target == GL_TEXTURE_2D_ARRAY_EXT) {
+         proxy_target = GL_PROXY_TEXTURE_2D_ARRAY_EXT;
       }
       else {
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage3D(target)" );
@@ -1383,6 +1529,10 @@ texture_error_check( GLcontext *ctx, GLenum target,
       return GL_TRUE;
    }
 
+   sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxy_target, level,
+                                                    internalFormat, format,
+                                                    type, width, height,
+                                                    depth, border);
    if (!sizeOK) {
       if (!isProxy) {
          _mesa_error(ctx, GL_INVALID_VALUE,
@@ -1461,11 +1611,13 @@ texture_error_check( GLcontext *ctx, GLenum target,
 
    /* additional checks for depth textures */
    if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) {
-      /* Only 1D and 2D textures supported */
+      /* Only 1D, 2D and rectangular textures supported, not 3D or cubes */
       if (target != GL_TEXTURE_1D &&
           target != GL_PROXY_TEXTURE_1D &&
           target != GL_TEXTURE_2D &&
-          target != GL_PROXY_TEXTURE_2D) {
+          target != GL_PROXY_TEXTURE_2D &&
+          target != GL_TEXTURE_RECTANGLE_ARB &&
+          target != GL_PROXY_TEXTURE_RECTANGLE_ARB) {
          if (!isProxy)
             _mesa_error(ctx, GL_INVALID_ENUM,
                         "glTexImage(target/internalFormat)");
@@ -1475,21 +1627,10 @@ texture_error_check( GLcontext *ctx, GLenum target,
 
    /* additional checks for compressed textures */
    if (is_compressed_format(ctx, internalFormat)) {
-      if (target == GL_TEXTURE_2D || target == GL_PROXY_TEXTURE_2D) {
-         /* OK */
-      }
-      else if (ctx->Extensions.ARB_texture_cube_map &&
-               (target == GL_PROXY_TEXTURE_CUBE_MAP ||
-                (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
-                 target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) {
-         /* OK */
-      }
-      else {
-         if (!isProxy) {
-            _mesa_error(ctx, GL_INVALID_ENUM,
-                        "glTexImage%d(target)", dimensions);
-            return GL_TRUE;
-         }
+      if (!target_can_be_compressed(ctx, target) && !isProxy) {
+         _mesa_error(ctx, GL_INVALID_ENUM,
+                     "glTexImage%d(target)", dimensions);
+         return GL_TRUE;
       }
       if (border != 0) {
          if (!isProxy) {
@@ -1534,9 +1675,6 @@ subtexture_error_check( GLcontext *ctx, GLuint dimensions,
                         GLint width, GLint height, GLint depth,
                         GLenum format, GLenum type )
 {
-   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-   struct gl_texture_image *destTex;
-
    /* Check target */
    if (dimensions == 1) {
       if (target != GL_TEXTURE_1D) {
@@ -1546,26 +1684,37 @@ subtexture_error_check( GLcontext *ctx, GLuint dimensions,
    }
    else if (dimensions == 2) {
       if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
-          target <=GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) {
+          target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) {
          if (!ctx->Extensions.ARB_texture_cube_map) {
             _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" );
             return GL_TRUE;
          }
       }
-      else if (ctx->Extensions.NV_texture_rectangle &&
-               target == GL_TEXTURE_RECTANGLE_NV) {
+      else if (target == GL_TEXTURE_RECTANGLE_NV) {
          if (!ctx->Extensions.NV_texture_rectangle) {
             _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" );
             return GL_TRUE;
          }
       }
+      else if (target == GL_TEXTURE_1D_ARRAY_EXT) {
+        if (!ctx->Extensions.MESA_texture_array) {
+           _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" );
+           return GL_TRUE;
+        }
+      }
       else if (target != GL_TEXTURE_2D) {
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" );
          return GL_TRUE;
       }
    }
    else if (dimensions == 3) {
-      if (target != GL_TEXTURE_3D) {
+      if (target == GL_TEXTURE_2D_ARRAY_EXT) {
+         if (!ctx->Extensions.MESA_texture_array) {
+            _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage3D(target)" );
+            return GL_TRUE;
+         }
+      }
+      else if (target != GL_TEXTURE_3D) {
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage3D(target)" );
          return GL_TRUE;
       }
@@ -1597,8 +1746,23 @@ subtexture_error_check( GLcontext *ctx, GLuint dimensions,
       return GL_TRUE;
    }
 
-   destTex = _mesa_select_tex_image(ctx, texUnit, target, level);
+   if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glTexSubImage%dD(format or type)", dimensions);
+      return GL_TRUE;
+   }
+
+   return GL_FALSE;
+}
 
+static GLboolean
+subtexture_error_check2( GLcontext *ctx, GLuint dimensions,
+                        GLenum target, GLint level,
+                        GLint xoffset, GLint yoffset, GLint zoffset,
+                        GLint width, GLint height, GLint depth,
+                        GLenum format, GLenum type,
+                        const struct gl_texture_image *destTex )
+{
    if (!destTex) {
       /* undefined image level */
       _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions);
@@ -1638,28 +1802,22 @@ subtexture_error_check( GLcontext *ctx, GLuint dimensions,
       }
    }
 
-   if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
-      _mesa_error(ctx, GL_INVALID_ENUM,
-                  "glTexSubImage%dD(format or type)", dimensions);
+#if FEATURE_EXT_texture_sRGB
+   if (destTex->InternalFormat == GL_COMPRESSED_SRGB_S3TC_DXT1_EXT ||
+       destTex->InternalFormat == GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT ||
+       destTex->InternalFormat == GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT ||
+       destTex->InternalFormat == GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT) {
+      if ((width & 0x3) || (height & 0x3) ||
+          (xoffset & 0x3) || (yoffset & 0x3))
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glTexSubImage%dD(size or offset not multiple of 4)",
+                     dimensions);
       return GL_TRUE;
    }
+#endif
 
    if (destTex->IsCompressed) {
-      const struct gl_texture_unit *texUnit;
-      const struct gl_texture_image *texImage;
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-      texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-
-      if (target == GL_TEXTURE_2D || target == GL_PROXY_TEXTURE_2D) {
-         /* OK */
-      }
-      else if (ctx->Extensions.ARB_texture_cube_map &&
-               (target == GL_PROXY_TEXTURE_CUBE_MAP ||
-                (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
-                 target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z))) {
-         /* OK */
-      }
-      else {
+      if (!target_can_be_compressed(ctx, target)) {
          _mesa_error(ctx, GL_INVALID_ENUM,
                      "glTexSubImage%D(target)", dimensions);
          return GL_TRUE;
@@ -1671,12 +1829,12 @@ subtexture_error_check( GLcontext *ctx, GLuint dimensions,
          return GL_TRUE;
       }
       /* size must be multiple of 4 or equal to whole texture size */
-      if ((width & 3) && (GLuint) width != texImage->Width) {
+      if ((width & 3) && (GLuint) width != destTex->Width) {
          _mesa_error(ctx, GL_INVALID_OPERATION,
                      "glTexSubImage%D(width)", dimensions);
          return GL_TRUE;
       }         
-      if ((height & 3) && (GLuint) height != texImage->Height) {
+      if ((height & 3) && (GLuint) height != destTex->Height) {
          _mesa_error(ctx, GL_INVALID_OPERATION,
                      "glTexSubImage%D(width)", dimensions);
          return GL_TRUE;
@@ -1717,6 +1875,11 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
 
    /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
    if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glCopyTexImage%dD(level=%d)", dimensions, level);
+      return GL_TRUE;
+   }
+
    /* Check that the source buffer is complete */
    if (ctx->ReadBuffer->Name) {
       _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
@@ -1727,11 +1890,6 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
       }
    }
 
-      _mesa_error(ctx, GL_INVALID_VALUE,
-                  "glCopyTexImage%dD(level=%d)", dimensions, level);
-      return GL_TRUE;
-   }
-
    /* Check border */
    if (border < 0 || border > 1 ||
        ((target == GL_TEXTURE_RECTANGLE_NV ||
@@ -1801,6 +1959,17 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
                                                 format, type,
                                                 width, height, 1, border);
       }
+      else if (target == GL_TEXTURE_1D_ARRAY_EXT) {
+         if (!ctx->Extensions.MESA_texture_array) {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage2D(target)");
+            return GL_TRUE;
+         }
+         sizeOK = ctx->Driver.TestProxyTexImage(ctx,
+                                                GL_PROXY_TEXTURE_1D_ARRAY_EXT,
+                                                level, internalFormat,
+                                                format, type,
+                                                width, height, 1, border);
+      }
       else {
          _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexImage2D(target)" );
          return GL_TRUE;
@@ -1881,11 +2050,8 @@ static GLboolean
 copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions,
                              GLenum target, GLint level,
                              GLint xoffset, GLint yoffset, GLint zoffset,
-                             GLsizei width, GLsizei height )
+                             GLsizei width, GLsizei height)
 {
-   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-   struct gl_texture_image *teximage;
-
    /* Check target */
    /* Check that the source buffer is complete */
    if (ctx->ReadBuffer->Name) {
@@ -1917,15 +2083,23 @@ copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions,
             return GL_TRUE;
          }
       }
+      else if (target == GL_TEXTURE_1D_ARRAY_EXT) {
+         if (!ctx->Extensions.MESA_texture_array) {
+            _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" );
+            return GL_TRUE;
+         }
+      }
       else if (target != GL_TEXTURE_2D) {
          _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" );
          return GL_TRUE;
       }
    }
    else if (dimensions == 3) {
-      if (target != GL_TEXTURE_3D) {
-         _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage3D(target)" );
-         return GL_TRUE;
+      if (((target != GL_TEXTURE_2D_ARRAY_EXT) ||
+          (!ctx->Extensions.MESA_texture_array))
+         && (target != GL_TEXTURE_3D)) {
+        _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage3D(target)" );
+        return GL_TRUE;
       }
    }
 
@@ -1948,7 +2122,16 @@ copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions,
       return GL_TRUE;
    }
 
-   teximage = _mesa_select_tex_image(ctx, texUnit, target, level);
+   return GL_FALSE;
+}
+
+static GLboolean
+copytexsubimage_error_check2( GLcontext *ctx, GLuint dimensions,
+                             GLenum target, GLint level,
+                             GLint xoffset, GLint yoffset, GLint zoffset,
+                             GLsizei width, GLsizei height,
+                             const struct gl_texture_image *teximage )
+{
    if (!teximage) {
       _mesa_error(ctx, GL_INVALID_OPERATION,
                   "glCopyTexSubImage%dD(undefined texture level: %d)",
@@ -1994,12 +2177,6 @@ copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions,
    }
 
    if (teximage->IsCompressed) {
-   if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,
-                  "glCopyTexSubImage%dD(missing readbuffer)", dimensions);
-      return GL_TRUE;
-   }
-
       if (target != GL_TEXTURE_2D) {
          _mesa_error(ctx, GL_INVALID_ENUM,
                      "glCopyTexSubImage%d(target)", dimensions);
@@ -2029,6 +2206,12 @@ copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions,
       return GL_TRUE;
    }
 
+   if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+               "glCopyTexSubImage%dD(missing readbuffer)", dimensions);
+      return GL_TRUE;
+   }
+
    if (teximage->_BaseFormat == GL_DEPTH_COMPONENT) {
       if (!ctx->ReadBuffer->_DepthBuffer) {
          _mesa_error(ctx, GL_INVALID_OPERATION,
@@ -2099,66 +2282,89 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
 
    if (!ctx->Extensions.EXT_paletted_texture && is_index_format(format)) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return;
    }
 
    if (!ctx->Extensions.SGIX_depth_texture &&
        !ctx->Extensions.ARB_depth_texture && is_depth_format(format)) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return;
    }
 
    if (!ctx->Extensions.MESA_ycbcr_texture && is_ycbcr_format(format)) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return;
    }
 
    if (!ctx->Extensions.EXT_packed_depth_stencil
        && is_depthstencil_format(format)) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+      return;
    }
 
    if (!pixels)
       return;
 
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   if (!texImage) {
-      /* invalid mipmap level, not an error */
-      return;
-   }
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+      if (!texImage) {
+        /* invalid mipmap level, not an error */
+        goto out;
+      }
 
-   /* Make sure the requested image format is compatible with the
-    * texture's format.  Note that a color index texture can be converted
-    * to RGBA so that combo is allowed.
-    */
-   if (is_color_format(format)
-       && !is_color_format(texImage->TexFormat->BaseFormat)
-       && !is_index_format(texImage->TexFormat->BaseFormat)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
-      return;
-   }
-   else if (is_index_format(format)
-       && !is_index_format(texImage->TexFormat->BaseFormat)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
-      return;
-   }
-   else if (is_depth_format(format)
-       && !is_depth_format(texImage->TexFormat->BaseFormat)
-       && !is_depthstencil_format(texImage->TexFormat->BaseFormat)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
-      return;
-   }
-   else if (is_ycbcr_format(format)
-       && !is_ycbcr_format(texImage->TexFormat->BaseFormat)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
-      return;
-   }
-   else if (is_depthstencil_format(format)
-       && !is_depthstencil_format(texImage->TexFormat->BaseFormat)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
-      return;
-   }
 
-   /* typically, this will call _mesa_get_teximage() */
-   ctx->Driver.GetTexImage(ctx, target, level, format, type, pixels,
-                           texObj, texImage);
+      /* Make sure the requested image format is compatible with the
+       * texture's format.  Note that a color index texture can be converted
+       * to RGBA so that combo is allowed.
+       */
+      if (is_color_format(format)
+         && !is_color_format(texImage->TexFormat->BaseFormat)
+         && !is_index_format(texImage->TexFormat->BaseFormat)) {
+        _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+        goto out;
+      }
+      else if (is_index_format(format)
+              && !is_index_format(texImage->TexFormat->BaseFormat)) {
+        _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+        goto out;
+      }
+      else if (is_depth_format(format)
+              && !is_depth_format(texImage->TexFormat->BaseFormat)
+              && !is_depthstencil_format(texImage->TexFormat->BaseFormat)) {
+        _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+        goto out;
+      }
+      else if (is_ycbcr_format(format)
+              && !is_ycbcr_format(texImage->TexFormat->BaseFormat)) {
+        _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+        goto out;
+      }
+      else if (is_depthstencil_format(format)
+              && !is_depthstencil_format(texImage->TexFormat->BaseFormat)) {
+        _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
+        goto out;
+      }
+
+      if (ctx->Pack.BufferObj->Name) {
+        /* packing texture image into a PBO */
+        const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
+        if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack, texImage->Width,
+                                       texImage->Height, texImage->Depth,
+                                       format, type, pixels)) {
+           _mesa_error(ctx, GL_INVALID_OPERATION,
+                       "glGetTexImage(invalid PBO access)");
+           goto out;
+        }
+      }
+
+      /* typically, this will call _mesa_get_teximage() */
+      ctx->Driver.GetTexImage(ctx, target, level, format, type, pixels,
+                             texObj, texImage);
+
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -2221,40 +2427,47 @@ _mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
          return;   /* error was recorded */
       }
 
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-      texObj = _mesa_select_tex_object(ctx, texUnit, target);
-      texImage = _mesa_get_tex_image(ctx, texUnit, target, level);
-
-      if (!texImage) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D");
-         return;
-      }
-      else if (texImage->Data) {
-        ctx->Driver.FreeTexImageData( ctx, texImage );
-      }
-      ASSERT(texImage->Data == NULL);
-      clear_teximage_fields(texImage); /* not really needed, but helpful */
-      _mesa_init_teximage_fields(ctx, target, texImage,
-                                 postConvWidth, 1, 1,
-                                 border, internalFormat);
-
       if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE)
-         _mesa_update_state(ctx);
+        _mesa_update_state(ctx);
 
-      ASSERT(ctx->Driver.TexImage1D);
+      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      texObj = _mesa_select_tex_object(ctx, texUnit, target);
+      _mesa_lock_texture(ctx, texObj);
+      {
+        texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+        if (!texImage) {
+           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D");
+           goto out;
+        }
+      
+        if (texImage->Data) {
+           ctx->Driver.FreeTexImageData( ctx, texImage );
+        }
 
-      /* Give the texture to the driver!  <pixels> may be null! */
-      (*ctx->Driver.TexImage1D)(ctx, target, level, internalFormat,
-                                width, border, format, type, pixels,
-                                &ctx->Unpack, texObj, texImage);
+        ASSERT(texImage->Data == NULL);
 
-      ASSERT(texImage->TexFormat);
+        clear_teximage_fields(texImage); /* not really needed, but helpful */
+        _mesa_init_teximage_fields(ctx, target, texImage,
+                                   postConvWidth, 1, 1,
+                                   border, internalFormat);
+        
+        ASSERT(ctx->Driver.TexImage1D);
 
-      update_fbo_texture(ctx, texObj, face, level);
+        /* Give the texture to the driver!  <pixels> may be null! */
+        (*ctx->Driver.TexImage1D)(ctx, target, level, internalFormat,
+                                  width, border, format, type, pixels,
+                                  &ctx->Unpack, texObj, texImage);
+        
+        ASSERT(texImage->TexFormat);
 
-      /* state update */
-      texObj->Complete = GL_FALSE;
-      ctx->NewState |= _NEW_TEXTURE;
+        update_fbo_texture(ctx, texObj, face, level);
+        
+        /* state update */
+        texObj->_Complete = GL_FALSE;
+        ctx->NewState |= _NEW_TEXTURE;
+      }
+   out:
+      _mesa_unlock_texture(ctx, texObj);
    }
    else if (target == GL_PROXY_TEXTURE_1D) {
       /* Proxy texture: check for errors and update proxy state */
@@ -2303,7 +2516,9 @@ _mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
         target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
         target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) ||
        (ctx->Extensions.NV_texture_rectangle &&
-        target == GL_TEXTURE_RECTANGLE_NV)) {
+        target == GL_TEXTURE_RECTANGLE_NV) ||
+       (ctx->Extensions.MESA_texture_array &&
+        target == GL_TEXTURE_1D_ARRAY_EXT)) {
       /* non-proxy target */
       struct gl_texture_unit *texUnit;
       struct gl_texture_object *texObj;
@@ -2316,45 +2531,54 @@ _mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
          return;   /* error was recorded */
       }
 
-      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-      texObj = _mesa_select_tex_object(ctx, texUnit, target);
-      texImage = _mesa_get_tex_image(ctx, texUnit, target, level);
-      if (!texImage) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
-         return;
-      }
-      else if (texImage->Data) {
-        ctx->Driver.FreeTexImageData( ctx, texImage );
-      }
-      ASSERT(texImage->Data == NULL);
-      clear_teximage_fields(texImage); /* not really needed, but helpful */
-      _mesa_init_teximage_fields(ctx, target, texImage,
-                                 postConvWidth, postConvHeight, 1,
-                                 border, internalFormat);
-
       if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE)
-         _mesa_update_state(ctx);
-
-      ASSERT(ctx->Driver.TexImage2D);
-
-      /* Give the texture to the driver!  <pixels> may be null! */
-      (*ctx->Driver.TexImage2D)(ctx, target, level, internalFormat,
-                                width, height, border, format, type, pixels,
-                                &ctx->Unpack, texObj, texImage);
-
-      ASSERT(texImage->TexFormat);
-
-      update_fbo_texture(ctx, texObj, face, level);
+        _mesa_update_state(ctx);
 
-      /* state update */
-      texObj->Complete = GL_FALSE;
-      ctx->NewState |= _NEW_TEXTURE;
+      texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+      texObj = _mesa_select_tex_object(ctx, texUnit, target);
+      _mesa_lock_texture(ctx, texObj);
+      {
+        texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+        if (!texImage) {
+           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
+           goto out;
+        }
+        
+        if (texImage->Data) {
+           ctx->Driver.FreeTexImageData( ctx, texImage );
+        }
+        
+        ASSERT(texImage->Data == NULL);
+        clear_teximage_fields(texImage); /* not really needed, but helpful */
+        _mesa_init_teximage_fields(ctx, target, texImage,
+                                   postConvWidth, postConvHeight, 1,
+                                   border, internalFormat);
+        
+        ASSERT(ctx->Driver.TexImage2D);
+
+        /* Give the texture to the driver!  <pixels> may be null! */
+        (*ctx->Driver.TexImage2D)(ctx, target, level, internalFormat,
+                                  width, height, border, format, type, pixels,
+                                  &ctx->Unpack, texObj, texImage);
+        
+        ASSERT(texImage->TexFormat);
+
+        update_fbo_texture(ctx, texObj, face, level);
+
+        /* state update */
+        texObj->_Complete = GL_FALSE;
+        ctx->NewState |= _NEW_TEXTURE;
+      }
+   out:
+      _mesa_unlock_texture(ctx, texObj);
    }
    else if (target == GL_PROXY_TEXTURE_2D ||
             (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB &&
              ctx->Extensions.ARB_texture_cube_map) ||
             (target == GL_PROXY_TEXTURE_RECTANGLE_NV &&
-             ctx->Extensions.NV_texture_rectangle)) {
+             ctx->Extensions.NV_texture_rectangle) ||
+            (ctx->Extensions.MESA_texture_array &&
+             target == GL_PROXY_TEXTURE_1D_ARRAY_EXT)) {
       /* Proxy texture: check for errors and update proxy state */
       struct gl_texture_image *texImage;
       texImage = _mesa_get_proxy_tex_image(ctx, target, level);
@@ -2394,7 +2618,9 @@ _mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-   if (target == GL_TEXTURE_3D) {
+   if (target == GL_TEXTURE_3D ||
+       (ctx->Extensions.MESA_texture_array &&
+        target == GL_TEXTURE_2D_ARRAY_EXT)) {
       /* non-proxy target */
       struct gl_texture_unit *texUnit;
       struct gl_texture_object *texObj;
@@ -2406,41 +2632,50 @@ _mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
          return;   /* error was recorded */
       }
 
+      if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE)
+        _mesa_update_state(ctx);
+
       texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
-      texImage = _mesa_get_tex_image(ctx, texUnit, target, level);
-      if (!texImage) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D");
-         return;
-      }
-      else if (texImage->Data) {
-        ctx->Driver.FreeTexImageData( ctx, texImage );
-      }
-      ASSERT(texImage->Data == NULL);
-      clear_teximage_fields(texImage); /* not really needed, but helpful */
-      _mesa_init_teximage_fields(ctx, target, texImage,
-                                 width, height, depth,
-                                 border, internalFormat);
-
-      if (ctx->NewState & _IMAGE_NEW_TRANSFER_STATE)
-         _mesa_update_state(ctx);
+      _mesa_lock_texture(ctx, texObj);
+      {
+        texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+        if (!texImage) {
+           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D");
+           goto out;
+        }
+        
+        if (texImage->Data) {
+           ctx->Driver.FreeTexImageData( ctx, texImage );
+        }
+        
+        ASSERT(texImage->Data == NULL);
+        clear_teximage_fields(texImage); /* not really needed, but helpful */
+        _mesa_init_teximage_fields(ctx, target, texImage,
+                                   width, height, depth,
+                                   border, internalFormat);
 
-      ASSERT(ctx->Driver.TexImage3D);
+        ASSERT(ctx->Driver.TexImage3D);
 
-      /* Give the texture to the driver!  <pixels> may be null! */
-      (*ctx->Driver.TexImage3D)(ctx, target, level, internalFormat,
-                                width, height, depth, border, format, type,
-                                pixels, &ctx->Unpack, texObj, texImage);
+        /* Give the texture to the driver!  <pixels> may be null! */
+        (*ctx->Driver.TexImage3D)(ctx, target, level, internalFormat,
+                                  width, height, depth, border, format, type,
+                                  pixels, &ctx->Unpack, texObj, texImage);
 
-      ASSERT(texImage->TexFormat);
+        ASSERT(texImage->TexFormat);
 
-      update_fbo_texture(ctx, texObj, face, level);
+        update_fbo_texture(ctx, texObj, face, level);
 
-      /* state update */
-      texObj->Complete = GL_FALSE;
-      ctx->NewState |= _NEW_TEXTURE;
+        /* state update */
+        texObj->_Complete = GL_FALSE;
+        ctx->NewState |= _NEW_TEXTURE;
+      }
+   out:
+      _mesa_unlock_texture(ctx, texObj);
    }
-   else if (target == GL_PROXY_TEXTURE_3D) {
+   else if (target == GL_PROXY_TEXTURE_3D ||
+       (ctx->Extensions.MESA_texture_array &&
+        target == GL_PROXY_TEXTURE_2D_ARRAY_EXT)) {
       /* Proxy texture: check for errors and update proxy state */
       struct gl_texture_image *texImage;
       texImage = _mesa_get_proxy_tex_image(ctx, target, level);
@@ -2486,7 +2721,7 @@ _mesa_TexSubImage1D( GLenum target, GLint level,
    GLsizei postConvWidth = width;
    struct gl_texture_unit *texUnit;
    struct gl_texture_object *texObj;
-   struct gl_texture_image *texImage;
+   struct gl_texture_image *texImage = NULL;
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
@@ -2499,26 +2734,38 @@ _mesa_TexSubImage1D( GLenum target, GLint level,
    }
 
    if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0,
-                              postConvWidth, 1, 1, format, type)) {
+                              postConvWidth, 1, 1, format, type)) {
       return;   /* error was detected */
    }
 
+
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   assert(texImage);
+   assert(texObj);
 
-   if (width == 0)
-      return;  /* no-op, not an error */
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+
+      if (subtexture_error_check2(ctx, 1, target, level, xoffset, 0, 0,
+                                 postConvWidth, 1, 1, format, type, texImage)) {
+        goto out;   /* error was detected */
+      }
 
-   /* If we have a border, xoffset=-1 is legal.  Bias by border width */
-   xoffset += texImage->Border;
+      if (width == 0)
+        goto out;  /* no-op, not an error */
 
-   ASSERT(ctx->Driver.TexSubImage1D);
-   (*ctx->Driver.TexSubImage1D)(ctx, target, level, xoffset, width,
-                                format, type, pixels, &ctx->Unpack,
-                                texObj, texImage);
-   ctx->NewState |= _NEW_TEXTURE;
+      /* If we have a border, xoffset=-1 is legal.  Bias by border width */
+      xoffset += texImage->Border;
+
+      ASSERT(ctx->Driver.TexSubImage1D);
+      (*ctx->Driver.TexSubImage1D)(ctx, target, level, xoffset, width,
+                                  format, type, pixels, &ctx->Unpack,
+                                  texObj, texImage);
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -2546,27 +2793,37 @@ _mesa_TexSubImage2D( GLenum target, GLint level,
    }
 
    if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0,
-                             postConvWidth, postConvHeight, 1, format, type)) {
+                             postConvWidth, postConvHeight, 1, format, type)) {
       return;   /* error was detected */
    }
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   assert(texImage);
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
 
-   if (width == 0 || height == 0)
-      return;  /* no-op, not an error */
+      if (subtexture_error_check2(ctx, 2, target, level, xoffset, yoffset, 0,
+                                 postConvWidth, postConvHeight, 1, format, type, 
+                                 texImage)) {
+        goto out;   /* error was detected */
+      }
 
-   /* If we have a border, xoffset=-1 is legal.  Bias by border width */
-   xoffset += texImage->Border;
-   yoffset += texImage->Border;
+      if (width == 0 || height == 0)
+        goto out;  /* no-op, not an error */
 
-   ASSERT(ctx->Driver.TexSubImage2D);
-   (*ctx->Driver.TexSubImage2D)(ctx, target, level, xoffset, yoffset,
-                                width, height, format, type, pixels,
-                                &ctx->Unpack, texObj, texImage);
-   ctx->NewState |= _NEW_TEXTURE;
+      /* If we have a border, xoffset=-1 is legal.  Bias by border width */
+      xoffset += texImage->Border;
+      yoffset += texImage->Border;
+      
+      ASSERT(ctx->Driver.TexSubImage2D);
+      (*ctx->Driver.TexSubImage2D)(ctx, target, level, xoffset, yoffset,
+                                  width, height, format, type, pixels,
+                                  &ctx->Unpack, texObj, texImage);
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -2594,24 +2851,34 @@ _mesa_TexSubImage3D( GLenum target, GLint level,
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   assert(texImage);
-
-   if (width == 0 || height == 0 || height == 0)
-      return;  /* no-op, not an error */
-
-   /* If we have a border, xoffset=-1 is legal.  Bias by border width */
-   xoffset += texImage->Border;
-   yoffset += texImage->Border;
-   zoffset += texImage->Border;
-
-   ASSERT(ctx->Driver.TexSubImage3D);
-   (*ctx->Driver.TexSubImage3D)(ctx, target, level,
-                                xoffset, yoffset, zoffset,
-                                width, height, depth,
-                                format, type, pixels,
-                                &ctx->Unpack, texObj, texImage );
-   ctx->NewState |= _NEW_TEXTURE;
+
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+
+      if (subtexture_error_check2(ctx, 3, target, level, xoffset, yoffset, zoffset,
+                                 width, height, depth, format, type, texImage)) {
+        goto out;   /* error was detected */
+      }
+
+      if (width == 0 || height == 0 || height == 0)
+        goto out;  /* no-op, not an error */
+
+      /* If we have a border, xoffset=-1 is legal.  Bias by border width */
+      xoffset += texImage->Border;
+      yoffset += texImage->Border;
+      zoffset += texImage->Border;
+
+      ASSERT(ctx->Driver.TexSubImage3D);
+      (*ctx->Driver.TexSubImage3D)(ctx, target, level,
+                                  xoffset, yoffset, zoffset,
+                                  width, height, depth,
+                                  format, type, pixels,
+                                  &ctx->Unpack, texObj, texImage );
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -2643,32 +2910,39 @@ _mesa_CopyTexImage1D( GLenum target, GLint level,
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   texImage = _mesa_get_tex_image(ctx, texUnit, target, level);
-   if (!texImage) {
-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D");
-      return;
-   }
-   else if (texImage->Data) {
-      ctx->Driver.FreeTexImageData( ctx, texImage );
-   }
-   ASSERT(texImage->Data == NULL);
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+      if (!texImage) {
+        _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D");
+        goto out;
+      }
+
+      if (texImage->Data) {
+        ctx->Driver.FreeTexImageData( ctx, texImage );
+      }
+      
+      ASSERT(texImage->Data == NULL);
 
-   clear_teximage_fields(texImage); /* not really needed, but helpful */
-   _mesa_init_teximage_fields(ctx, target, texImage, postConvWidth, 1, 1,
-                              border, internalFormat);
+      clear_teximage_fields(texImage); /* not really needed, but helpful */
+      _mesa_init_teximage_fields(ctx, target, texImage, postConvWidth, 1, 1,
+                                border, internalFormat);
 
 
-   ASSERT(ctx->Driver.CopyTexImage1D);
-   (*ctx->Driver.CopyTexImage1D)(ctx, target, level, internalFormat,
-                                 x, y, width, border);
+      ASSERT(ctx->Driver.CopyTexImage1D);
+      (*ctx->Driver.CopyTexImage1D)(ctx, target, level, internalFormat,
+                                   x, y, width, border);
 
-   ASSERT(texImage->TexFormat);
+      ASSERT(texImage->TexFormat);
 
-   update_fbo_texture(ctx, texObj, face, level);
+      update_fbo_texture(ctx, texObj, face, level);
 
-   /* state update */
-   texObj->Complete = GL_FALSE;
-   ctx->NewState |= _NEW_TEXTURE;
+      /* state update */
+      texObj->_Complete = GL_FALSE;
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -2700,41 +2974,50 @@ _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   texImage = _mesa_get_tex_image(ctx, texUnit, target, level);
-   if (!texImage) {
-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D");
-      return;
-   }
-   else if (texImage->Data) {
-      ctx->Driver.FreeTexImageData( ctx, texImage );
-   }
-   ASSERT(texImage->Data == NULL);
 
-   clear_teximage_fields(texImage); /* not really needed, but helpful */
-   _mesa_init_teximage_fields(ctx, target, texImage,
-                              postConvWidth, postConvHeight, 1,
-                              border, internalFormat);
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_get_tex_image(ctx, texObj, target, level);
 
-   ASSERT(ctx->Driver.CopyTexImage2D);
-   (*ctx->Driver.CopyTexImage2D)(ctx, target, level, internalFormat,
-                                 x, y, width, height, border);
+      if (!texImage) {
+        _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D");
+        goto out;
+      }
+      
+      if (texImage->Data) {
+        ctx->Driver.FreeTexImageData( ctx, texImage );
+      }
+      
+      ASSERT(texImage->Data == NULL);
 
-   ASSERT(texImage->TexFormat);
+      clear_teximage_fields(texImage); /* not really needed, but helpful */
+      _mesa_init_teximage_fields(ctx, target, texImage,
+                                postConvWidth, postConvHeight, 1,
+                                border, internalFormat);
+      
+      ASSERT(ctx->Driver.CopyTexImage2D);
+      (*ctx->Driver.CopyTexImage2D)(ctx, target, level, internalFormat,
+                                   x, y, width, height, border);
+      
+      ASSERT(texImage->TexFormat);
 
-   update_fbo_texture(ctx, texObj, face, level);
+      update_fbo_texture(ctx, texObj, face, level);
 
-   /* state update */
-   texObj->Complete = GL_FALSE;
-   ctx->NewState |= _NEW_TEXTURE;
+      /* state update */
+      texObj->_Complete = GL_FALSE;
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
-
 void GLAPIENTRY
 _mesa_CopyTexSubImage1D( GLenum target, GLint level,
                          GLint xoffset, GLint x, GLint y, GLsizei width )
 {
    struct gl_texture_unit *texUnit;
+   struct gl_texture_object *texObj;
    struct gl_texture_image *texImage;
    GLsizei postConvWidth = width;
    GET_CURRENT_CONTEXT(ctx);
@@ -2751,15 +3034,27 @@ _mesa_CopyTexSubImage1D( GLenum target, GLint level,
       return;
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   ASSERT(texImage);
+   texObj = _mesa_select_tex_object(ctx, texUnit, target);
+
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
 
-   /* If we have a border, xoffset=-1 is legal.  Bias by border width */
-   xoffset += texImage->Border;
+      if (copytexsubimage_error_check2(ctx, 1, target, level,
+                                      xoffset, 0, 0, postConvWidth, 1,
+                                      texImage))
+        goto out;
+      
+
+      /* If we have a border, xoffset=-1 is legal.  Bias by border width */
+      xoffset += texImage->Border;
 
-   ASSERT(ctx->Driver.CopyTexSubImage1D);
-   (*ctx->Driver.CopyTexSubImage1D)(ctx, target, level, xoffset, x, y, width);
-   ctx->NewState |= _NEW_TEXTURE;
+      ASSERT(ctx->Driver.CopyTexSubImage1D);
+      (*ctx->Driver.CopyTexSubImage1D)(ctx, target, level, xoffset, x, y, width);
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -2770,6 +3065,7 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level,
                          GLint x, GLint y, GLsizei width, GLsizei height )
 {
    struct gl_texture_unit *texUnit;
+   struct gl_texture_object *texObj;
    struct gl_texture_image *texImage;
    GLsizei postConvWidth = width, postConvHeight = height;
    GET_CURRENT_CONTEXT(ctx);
@@ -2786,17 +3082,27 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level,
       return;
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   ASSERT(texImage);
+   texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
-   /* If we have a border, xoffset=-1 is legal.  Bias by border width */
-   xoffset += texImage->Border;
-   yoffset += texImage->Border;
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
 
-   ASSERT(ctx->Driver.CopyTexSubImage2D);
-   (*ctx->Driver.CopyTexSubImage2D)(ctx, target, level,
-                                    xoffset, yoffset, x, y, width, height);
-   ctx->NewState |= _NEW_TEXTURE;
+      if (copytexsubimage_error_check2(ctx, 2, target, level, xoffset, yoffset, 0,
+                                      postConvWidth, postConvHeight, texImage))
+        goto out;
+
+      /* If we have a border, xoffset=-1 is legal.  Bias by border width */
+      xoffset += texImage->Border;
+      yoffset += texImage->Border;
+      
+      ASSERT(ctx->Driver.CopyTexSubImage2D);
+      (*ctx->Driver.CopyTexSubImage2D)(ctx, target, level,
+                                      xoffset, yoffset, x, y, width, height);
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -2807,6 +3113,7 @@ _mesa_CopyTexSubImage3D( GLenum target, GLint level,
                          GLint x, GLint y, GLsizei width, GLsizei height )
 {
    struct gl_texture_unit *texUnit;
+   struct gl_texture_object *texObj;
    struct gl_texture_image *texImage;
    GLsizei postConvWidth = width, postConvHeight = height;
    GET_CURRENT_CONTEXT(ctx);
@@ -2823,19 +3130,30 @@ _mesa_CopyTexSubImage3D( GLenum target, GLint level,
       return;
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   ASSERT(texImage);
+   texObj = _mesa_select_tex_object(ctx, texUnit, target);
 
-   /* If we have a border, xoffset=-1 is legal.  Bias by border width */
-   xoffset += texImage->Border;
-   yoffset += texImage->Border;
-   zoffset += texImage->Border;
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
 
-   ASSERT(ctx->Driver.CopyTexSubImage3D);
-   (*ctx->Driver.CopyTexSubImage3D)(ctx, target, level,
-                                    xoffset, yoffset, zoffset,
-                                    x, y, width, height);
-   ctx->NewState |= _NEW_TEXTURE;
+      if (copytexsubimage_error_check2(ctx, 3, target, level, xoffset, yoffset,
+                                      zoffset, postConvWidth, postConvHeight,
+                                      texImage))
+        goto out;
+
+      /* If we have a border, xoffset=-1 is legal.  Bias by border width */
+      xoffset += texImage->Border;
+      yoffset += texImage->Border;
+      zoffset += texImage->Border;
+      
+      ASSERT(ctx->Driver.CopyTexSubImage3D);
+      (*ctx->Driver.CopyTexSubImage3D)(ctx, target, level,
+                                      xoffset, yoffset, zoffset,
+                                      x, y, width, height);
+      ctx->NewState |= _NEW_TEXTURE;
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -2933,6 +3251,16 @@ compressed_texture_error_check(GLcontext *ctx, GLint dimensions,
    if (expectedSize != imageSize)
       return GL_INVALID_VALUE;
 
+#if FEATURE_EXT_texture_sRGB
+   if ((internalFormat == GL_COMPRESSED_SRGB_S3TC_DXT1_EXT ||
+        internalFormat == GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT ||
+        internalFormat == GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT ||
+        internalFormat == GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT)
+       && border != 0) {
+      return GL_INVALID_OPERATION;
+   }
+#endif
+
    return GL_NO_ERROR;
 }
 
@@ -3046,28 +3374,35 @@ _mesa_CompressedTexImage1DARB(GLenum target, GLint level,
 
       texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
-      texImage = _mesa_get_tex_image(ctx, texUnit, target, level);
-      if (!texImage) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage1D");
-         return;
-      }
-      else if (texImage->Data) {
-        ctx->Driver.FreeTexImageData( ctx, texImage );
-      }
-      ASSERT(texImage->Data == NULL);
 
-      _mesa_init_teximage_fields(ctx, target, texImage, width, 1, 1,
-                                 border, internalFormat);
+      _mesa_lock_texture(ctx, texObj);
+      {
+        texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+        if (!texImage) {
+           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage1D");
+           goto out;
+        }
+        
+        if (texImage->Data) {
+           ctx->Driver.FreeTexImageData( ctx, texImage );
+        }
+        ASSERT(texImage->Data == NULL);
+
+        _mesa_init_teximage_fields(ctx, target, texImage, width, 1, 1,
+                                   border, internalFormat);
 
-      ASSERT(ctx->Driver.CompressedTexImage1D);
-      (*ctx->Driver.CompressedTexImage1D)(ctx, target, level,
-                                          internalFormat, width, border,
-                                          imageSize, data,
-                                          texObj, texImage);
+        ASSERT(ctx->Driver.CompressedTexImage1D);
+        (*ctx->Driver.CompressedTexImage1D)(ctx, target, level,
+                                            internalFormat, width, border,
+                                            imageSize, data,
+                                            texObj, texImage);
 
-      /* state update */
-      texObj->Complete = GL_FALSE;
-      ctx->NewState |= _NEW_TEXTURE;
+        /* state update */
+        texObj->_Complete = GL_FALSE;
+        ctx->NewState |= _NEW_TEXTURE;
+      }
+   out:
+      _mesa_unlock_texture(ctx, texObj);
    }
    else if (target == GL_PROXY_TEXTURE_1D) {
       /* Proxy texture: check for errors and update proxy state */
@@ -3089,11 +3424,18 @@ _mesa_CompressedTexImage1DARB(GLenum target, GLint level,
       else {
          /* store the teximage parameters */
          struct gl_texture_unit *texUnit;
+         struct gl_texture_object *texObj;
          struct gl_texture_image *texImage;
          texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-         texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-         _mesa_init_teximage_fields(ctx, target, texImage, width, 1, 1,
-                                    border, internalFormat);
+        texObj = _mesa_select_tex_object(ctx, texUnit, target);
+
+        _mesa_lock_texture(ctx, texObj);
+        {
+           texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+           _mesa_init_teximage_fields(ctx, target, texImage, width, 1, 1,
+                                      border, internalFormat);
+        }
+        _mesa_unlock_texture(ctx, texObj);
       }
    }
    else {
@@ -3129,28 +3471,35 @@ _mesa_CompressedTexImage2DARB(GLenum target, GLint level,
 
       texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
-      texImage = _mesa_get_tex_image(ctx, texUnit, target, level);
-      if (!texImage) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2D");
-         return;
-      }
-      else if (texImage->Data) {
-        ctx->Driver.FreeTexImageData( ctx, texImage );
-      }
-      ASSERT(texImage->Data == NULL);
 
-      _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1,
-                                 border, internalFormat);
+      _mesa_lock_texture(ctx, texObj);
+      {
+        texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+        if (!texImage) {
+           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2D");
+           goto out;
+        }
+        
+        if (texImage->Data) {
+           ctx->Driver.FreeTexImageData( ctx, texImage );
+        }
+        ASSERT(texImage->Data == NULL);
 
-      ASSERT(ctx->Driver.CompressedTexImage2D);
-      (*ctx->Driver.CompressedTexImage2D)(ctx, target, level,
-                                          internalFormat, width, height,
-                                          border, imageSize, data,
-                                          texObj, texImage);
+        _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1,
+                                   border, internalFormat);
 
-      /* state update */
-      texObj->Complete = GL_FALSE;
-      ctx->NewState |= _NEW_TEXTURE;
+        ASSERT(ctx->Driver.CompressedTexImage2D);
+        (*ctx->Driver.CompressedTexImage2D)(ctx, target, level,
+                                            internalFormat, width, height,
+                                            border, imageSize, data,
+                                            texObj, texImage);
+        
+        /* state update */
+        texObj->_Complete = GL_FALSE;
+        ctx->NewState |= _NEW_TEXTURE;
+      }
+   out:
+      _mesa_unlock_texture(ctx, texObj);
    }
    else if (target == GL_PROXY_TEXTURE_2D ||
             (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB &&
@@ -3174,11 +3523,18 @@ _mesa_CompressedTexImage2DARB(GLenum target, GLint level,
       else {
          /* store the teximage parameters */
          struct gl_texture_unit *texUnit;
+         struct gl_texture_object *texObj;
          struct gl_texture_image *texImage;
          texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-         texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-         _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1,
-                                    border, internalFormat);
+        texObj = _mesa_select_tex_object(ctx, texUnit, target);
+
+        _mesa_lock_texture(ctx, texObj);
+        {
+           texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+           _mesa_init_teximage_fields(ctx, target, texImage, width, height, 1,
+                                      border, internalFormat);
+        }
+        _mesa_unlock_texture(ctx, texObj);
       }
    }
    else {
@@ -3211,29 +3567,35 @@ _mesa_CompressedTexImage3DARB(GLenum target, GLint level,
 
       texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
       texObj = _mesa_select_tex_object(ctx, texUnit, target);
-      texImage = _mesa_get_tex_image(ctx, texUnit, target, level);
-      if (!texImage) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage3D");
-         return;
-      }
-      else if (texImage->Data) {
-        ctx->Driver.FreeTexImageData( ctx, texImage );
-      }
-      ASSERT(texImage->Data == NULL);
-
-      _mesa_init_teximage_fields(ctx, target, texImage, width, height, depth,
-                                 border, internalFormat);
+      _mesa_lock_texture(ctx, texObj);
+      {
+        texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+        if (!texImage) {
+           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage3D");
+           goto out;
+        }
+        
+        if (texImage->Data) {
+           ctx->Driver.FreeTexImageData( ctx, texImage );
+        }
+        ASSERT(texImage->Data == NULL);
 
-      ASSERT(ctx->Driver.CompressedTexImage3D);
-      (*ctx->Driver.CompressedTexImage3D)(ctx, target, level,
-                                          internalFormat,
-                                          width, height, depth,
-                                          border, imageSize, data,
-                                          texObj, texImage);
+        _mesa_init_teximage_fields(ctx, target, texImage, width, height, depth,
+                                   border, internalFormat);
 
-      /* state update */
-      texObj->Complete = GL_FALSE;
-      ctx->NewState |= _NEW_TEXTURE;
+        ASSERT(ctx->Driver.CompressedTexImage3D);
+        (*ctx->Driver.CompressedTexImage3D)(ctx, target, level,
+                                            internalFormat,
+                                            width, height, depth,
+                                            border, imageSize, data,
+                                            texObj, texImage);
+        
+        /* state update */
+        texObj->_Complete = GL_FALSE;
+        ctx->NewState |= _NEW_TEXTURE;
+      }
+   out:
+      _mesa_unlock_texture(ctx, texObj);
    }
    else if (target == GL_PROXY_TEXTURE_3D) {
       /* Proxy texture: check for errors and update proxy state */
@@ -3255,11 +3617,17 @@ _mesa_CompressedTexImage3DARB(GLenum target, GLint level,
       else {
          /* store the teximage parameters */
          struct gl_texture_unit *texUnit;
+         struct gl_texture_object *texObj;
          struct gl_texture_image *texImage;
          texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-         texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-         _mesa_init_teximage_fields(ctx, target, texImage, width, height,
-                                    depth, border, internalFormat);
+        texObj = _mesa_select_tex_object(ctx, texUnit, target);
+        _mesa_lock_texture(ctx, texObj);
+        {
+           texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+           _mesa_init_teximage_fields(ctx, target, texImage, width, height,
+                                      depth, border, internalFormat);
+        }
+        _mesa_unlock_texture(ctx, texObj);
       }
    }
    else {
@@ -3292,30 +3660,35 @@ _mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   assert(texImage);
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+      assert(texImage);
 
-   if ((GLint) format != texImage->InternalFormat) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,
-                  "glCompressedTexSubImage1D(format)");
-      return;
-   }
+      if ((GLint) format != texImage->InternalFormat) {
+        _mesa_error(ctx, GL_INVALID_OPERATION,
+                    "glCompressedTexSubImage1D(format)");
+        goto out;
+      }
 
-   if ((width == 1 || width == 2) && (GLuint) width != texImage->Width) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage1D(width)");
-      return;
-   }
+      if ((width == 1 || width == 2) && (GLuint) width != texImage->Width) {
+        _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage1D(width)");
+        goto out;
+      }
       
-   if (width == 0)
-      return;  /* no-op, not an error */
+      if (width == 0)
+        goto out;  /* no-op, not an error */
 
-   if (ctx->Driver.CompressedTexSubImage1D) {
-      (*ctx->Driver.CompressedTexSubImage1D)(ctx, target, level,
-                                             xoffset, width,
-                                             format, imageSize, data,
-                                             texObj, texImage);
+      if (ctx->Driver.CompressedTexSubImage1D) {
+        (*ctx->Driver.CompressedTexSubImage1D)(ctx, target, level,
+                                               xoffset, width,
+                                               format, imageSize, data,
+                                               texObj, texImage);
+      }
+      ctx->NewState |= _NEW_TEXTURE;
    }
-   ctx->NewState |= _NEW_TEXTURE;
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -3344,31 +3717,36 @@ _mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   assert(texImage);
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+      assert(texImage);
 
-   if ((GLint) format != texImage->InternalFormat) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,
-                  "glCompressedTexSubImage2D(format)");
-      return;
-   }
+      if ((GLint) format != texImage->InternalFormat) {
+        _mesa_error(ctx, GL_INVALID_OPERATION,
+                    "glCompressedTexSubImage2D(format)");
+        goto out;
+      }
 
-   if (((width == 1 || width == 2) && (GLuint) width != texImage->Width) ||
-       ((height == 1 || height == 2) && (GLuint) height != texImage->Height)) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage2D(size)");
-      return;
-   }
+      if (((width == 1 || width == 2) && (GLuint) width != texImage->Width) ||
+         ((height == 1 || height == 2) && (GLuint) height != texImage->Height)) {
+        _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage2D(size)");
+        goto out;
+      }
       
-   if (width == 0 || height == 0)
-      return;  /* no-op, not an error */
+      if (width == 0 || height == 0)
+        goto out;  /* no-op, not an error */
 
-   if (ctx->Driver.CompressedTexSubImage2D) {
-      (*ctx->Driver.CompressedTexSubImage2D)(ctx, target, level,
-                                             xoffset, yoffset, width, height,
-                                             format, imageSize, data,
-                                             texObj, texImage);
+      if (ctx->Driver.CompressedTexSubImage2D) {
+        (*ctx->Driver.CompressedTexSubImage2D)(ctx, target, level,
+                                               xoffset, yoffset, width, height,
+                                               format, imageSize, data,
+                                               texObj, texImage);
+      }
+      ctx->NewState |= _NEW_TEXTURE;
    }
-   ctx->NewState |= _NEW_TEXTURE;
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -3396,33 +3774,38 @@ _mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
 
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   assert(texImage);
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+      assert(texImage);
 
-   if ((GLint) format != texImage->InternalFormat) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,
-                  "glCompressedTexSubImage3D(format)");
-      return;
-   }
+      if ((GLint) format != texImage->InternalFormat) {
+        _mesa_error(ctx, GL_INVALID_OPERATION,
+                    "glCompressedTexSubImage3D(format)");
+        goto out;
+      }
 
-   if (((width == 1 || width == 2) && (GLuint) width != texImage->Width) ||
-       ((height == 1 || height == 2) && (GLuint) height != texImage->Height) ||
-       ((depth == 1 || depth == 2) && (GLuint) depth != texImage->Depth)) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage3D(size)");
-      return;
-   }
+      if (((width == 1 || width == 2) && (GLuint) width != texImage->Width) ||
+         ((height == 1 || height == 2) && (GLuint) height != texImage->Height) ||
+         ((depth == 1 || depth == 2) && (GLuint) depth != texImage->Depth)) {
+        _mesa_error(ctx, GL_INVALID_VALUE, "glCompressedTexSubImage3D(size)");
+        goto out;
+      }
       
-   if (width == 0 || height == 0 || depth == 0)
-      return;  /* no-op, not an error */
+      if (width == 0 || height == 0 || depth == 0)
+        goto out;  /* no-op, not an error */
 
-   if (ctx->Driver.CompressedTexSubImage3D) {
-      (*ctx->Driver.CompressedTexSubImage3D)(ctx, target, level,
-                                             xoffset, yoffset, zoffset,
-                                             width, height, depth,
-                                             format, imageSize, data,
-                                             texObj, texImage);
+      if (ctx->Driver.CompressedTexSubImage3D) {
+        (*ctx->Driver.CompressedTexSubImage3D)(ctx, target, level,
+                                               xoffset, yoffset, zoffset,
+                                               width, height, depth,
+                                               format, imageSize, data,
+                                               texObj, texImage);
+      }
+      ctx->NewState |= _NEW_TEXTURE;
    }
-   ctx->NewState |= _NEW_TEXTURE;
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }
 
 
@@ -3430,12 +3813,13 @@ void GLAPIENTRY
 _mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)
 {
    const struct gl_texture_unit *texUnit;
-   const struct gl_texture_object *texObj;
+   struct gl_texture_object *texObj;
    struct gl_texture_image *texImage;
    GLint maxLevels;
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
+
    texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    texObj = _mesa_select_tex_object(ctx, texUnit, target);
    if (!texObj) {
@@ -3456,18 +3840,24 @@ _mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)
       return;
    }
 
-   texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-   if (!texImage) {
-      /* probably invalid mipmap level */
-      _mesa_error(ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)");
-      return;
-   }
 
-   if (!texImage->IsCompressed) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glGetCompressedTexImageARB");
-      return;
-   }
+   _mesa_lock_texture(ctx, texObj);
+   {
+      texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+      if (!texImage) {
+        /* probably invalid mipmap level */
+        _mesa_error(ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)");
+        goto out;
+      }
 
-   /* this typically calls _mesa_get_compressed_teximage() */
-   ctx->Driver.GetCompressedTexImage(ctx, target, level, img, texObj,texImage);
+      if (!texImage->IsCompressed) {
+        _mesa_error(ctx, GL_INVALID_OPERATION, "glGetCompressedTexImageARB");
+        goto out;
+      }
+
+      /* this typically calls _mesa_get_compressed_teximage() */
+      ctx->Driver.GetCompressedTexImage(ctx, target, level, img, texObj,texImage);
+   }
+ out:
+   _mesa_unlock_texture(ctx, texObj);
 }