Allow different max texture sizes for 1/2D, 3D and cube maps.

9 files changed, 186 insertions, 66 deletions

diff --git a/src/mesa/drivers/glide/fxdd.c b/src/mesa/drivers/glide/fxdd.c
index 70f8e639b1..117e9d7dea 100644
--- a/src/mesa/drivers/glide/fxdd.c
+++ b/src/mesa/drivers/glide/fxdd.c
@@ -754,7 +754,6 @@ fxDDInitFxMesaContext(fxMesaContext fxMesa)
 
    fxMesa->textureAlign = FX_grGetInteger(FX_TEXTURE_ALIGN);
    fxMesa->glCtx->Const.MaxTextureLevels = 9;
-   fxMesa->glCtx->Const.MaxTextureSize = 256;
    fxMesa->glCtx->Const.MaxTextureUnits = fxMesa->emulateTwoTMUs ? 2 : 1;
    fxMesa->new_state = _NEW_ALL;
 
diff --git a/src/mesa/main/config.h b/src/mesa/main/config.h
index cf57106a33..805da1e7b7 100644
--- a/src/mesa/main/config.h
+++ b/src/mesa/main/config.h
@@ -1,4 +1,4 @@
-/* $Id: config.h,v 1.31 2001/05/14 23:11:12 brianp Exp $ */
+/* $Id: config.h,v 1.32 2001/06/13 14:56:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -99,9 +99,15 @@
 /* Max texture palette / color table size */
 #define MAX_COLOR_TABLE_SIZE 256
 
-/* Number of texture levels */
+/* Number of 1D/2D texture mipmap levels */
 #define MAX_TEXTURE_LEVELS 12
 
+/* Number of 3D texture mipmap levels */
+#define MAX_3D_TEXTURE_LEVELS 8
+
+/* Number of cube texture mipmap levels */
+#define MAX_CUBE_TEXTURE_LEVELS 12
+
 /* Number of texture units - GL_ARB_multitexture */
 #define MAX_TEXTURE_UNITS 8
 
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 9da1526535..63c30f2ee5 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1,4 +1,4 @@
-/* $Id: context.c,v 1.142 2001/06/12 22:08:41 brianp Exp $ */
+/* $Id: context.c,v 1.143 2001/06/13 14:56:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -728,10 +728,13 @@ init_attrib_groups( GLcontext *ctx )
 
    assert(ctx);
 
+   assert(MAX_TEXTURE_LEVELS >= MAX_3D_TEXTURE_LEVELS);
+   assert(MAX_TEXTURE_LEVELS >= MAX_CUBE_TEXTURE_LEVELS);
+
    /* Constants, may be overriden by device drivers */
    ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS;
-   ctx->Const.MaxTextureSize = 1 << (MAX_TEXTURE_LEVELS - 1);
-   ctx->Const.MaxCubeTextureSize = ctx->Const.MaxTextureSize;
+   ctx->Const.Max3DTextureLevels = MAX_3D_TEXTURE_LEVELS;
+   ctx->Const.MaxCubeTextureLevels = MAX_CUBE_TEXTURE_LEVELS;
    ctx->Const.MaxTextureUnits = MAX_TEXTURE_UNITS;
    ctx->Const.MaxTextureMaxAnisotropy = MAX_TEXTURE_MAX_ANISOTROPY;
    ctx->Const.MaxArrayLockSize = MAX_ARRAY_LOCK_SIZE;
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 36487df912..987234a0a4 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -1,4 +1,4 @@
-/* $Id: get.c,v 1.62 2001/06/12 22:08:41 brianp Exp $ */
+/* $Id: get.c,v 1.63 2001/06/13 14:56:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -583,8 +583,10 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
 	 *params = INT_TO_BOOL(MAX_PROJECTION_STACK_DEPTH);
 	 break;
       case GL_MAX_TEXTURE_SIZE:
+         *params = INT_TO_BOOL(1 << (ctx->Const.MaxTextureLevels - 1));
+	 break;
       case GL_MAX_3D_TEXTURE_SIZE:
-         *params = INT_TO_BOOL(ctx->Const.MaxTextureSize);
+         *params = INT_TO_BOOL(1 << (ctx->Const.Max3DTextureLevels - 1));
 	 break;
       case GL_MAX_TEXTURE_STACK_DEPTH:
 	 *params = INT_TO_BOOL(MAX_TEXTURE_STACK_DEPTH);
@@ -994,7 +996,7 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
          return;
       case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
          if (ctx->Extensions.ARB_texture_cube_map)
-            *params = INT_TO_BOOL(ctx->Const.MaxCubeTextureSize);
+            *params = INT_TO_BOOL(1 << (ctx->Const.MaxCubeTextureLevels - 1));
          else
             _mesa_error(ctx, GL_INVALID_ENUM, "glGetBooleanv");
          break;
@@ -1861,8 +1863,10 @@ _mesa_GetDoublev( GLenum pname, GLdouble *params )
 	 *params = (GLdouble) MAX_PROJECTION_STACK_DEPTH;
 	 break;
       case GL_MAX_TEXTURE_SIZE:
+         *params = (GLdouble) (1 << (ctx->Const.MaxTextureLevels - 1));
+	 break;
       case GL_MAX_3D_TEXTURE_SIZE:
-         *params = (GLdouble) ctx->Const.MaxTextureSize;
+         *params = (GLdouble) (1 << (ctx->Const.Max3DTextureLevels - 1));
 	 break;
       case GL_MAX_TEXTURE_STACK_DEPTH:
 	 *params = (GLdouble) MAX_TEXTURE_STACK_DEPTH;
@@ -2272,7 +2276,7 @@ _mesa_GetDoublev( GLenum pname, GLdouble *params )
          return;
       case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
          if (ctx->Extensions.ARB_texture_cube_map)
-            *params = (GLdouble) ctx->Const.MaxCubeTextureSize;
+            *params = (GLdouble) (1 << (ctx->Const.MaxCubeTextureLevels - 1));
          else
             _mesa_error(ctx, GL_INVALID_ENUM, "glGetDoublev");
          return;
@@ -3139,8 +3143,10 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
 	 *params = (GLfloat) MAX_PROJECTION_STACK_DEPTH;
 	 break;
       case GL_MAX_TEXTURE_SIZE:
+         *params = (GLfloat) (1 << (ctx->Const.MaxTextureLevels - 1));
+	 break;
       case GL_MAX_3D_TEXTURE_SIZE:
-         *params = (GLfloat) ctx->Const.MaxTextureSize;
+         *params = (GLfloat) (1 << (ctx->Const.Max3DTextureLevels - 1));
 	 break;
       case GL_MAX_TEXTURE_STACK_DEPTH:
 	 *params = (GLfloat) MAX_TEXTURE_STACK_DEPTH;
@@ -3552,7 +3558,7 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
          return;
       case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
          if (ctx->Extensions.ARB_texture_cube_map)
-            *params = (GLfloat) ctx->Const.MaxCubeTextureSize;
+            *params = (GLfloat) (1 << (ctx->Const.MaxCubeTextureLevels - 1));
          else
             _mesa_error(ctx, GL_INVALID_ENUM, "glGetFloatv");
          return;
@@ -4393,8 +4399,10 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
          *params = (GLint) MAX_PROJECTION_STACK_DEPTH;
          break;
       case GL_MAX_TEXTURE_SIZE:
+         *params = (1 << (ctx->Const.MaxTextureLevels - 1));
+	 break;
       case GL_MAX_3D_TEXTURE_SIZE:
-         *params = ctx->Const.MaxTextureSize;
+         *params = (1 << (ctx->Const.Max3DTextureLevels - 1));
 	 break;
       case GL_MAX_TEXTURE_STACK_DEPTH:
 	 *params = (GLint) MAX_TEXTURE_STACK_DEPTH;
@@ -4804,7 +4812,7 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
          return;
       case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
          if (ctx->Extensions.ARB_texture_cube_map)
-            *params = ctx->Const.MaxCubeTextureSize;
+            *params = (1 << (ctx->Const.MaxCubeTextureLevels - 1));
          else
             _mesa_error(ctx, GL_INVALID_ENUM, "glGetIntegerv");
          return;
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index fce2616112..80a8022f12 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1,4 +1,4 @@
-/* $Id: mtypes.h,v 1.45 2001/06/12 22:08:41 brianp Exp $ */
+/* $Id: mtypes.h,v 1.46 2001/06/13 14:56:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1156,9 +1156,9 @@ struct gl_frame_buffer {
  * but are never changed after that.
  */
 struct gl_constants {
-   GLint MaxTextureSize;
-   GLint MaxCubeTextureSize;
    GLint MaxTextureLevels;
+   GLint Max3DTextureLevels;
+   GLint MaxCubeTextureLevels;
    GLuint MaxTextureUnits;
    GLfloat MaxTextureMaxAnisotropy;	/* GL_EXT_texture_filter_anisotropic */
    GLuint MaxArrayLockSize;
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 0dbbb187c6..0b535d1ecb 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -1,4 +1,4 @@
-/* $Id: teximage.c,v 1.96 2001/06/12 22:05:34 brianp Exp $ */
+/* $Id: teximage.c,v 1.97 2001/06/13 14:56:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -443,6 +443,7 @@ _mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_unit *texUnit,
                        GLenum target, GLint level)
 {
    ASSERT(texUnit);
+   ASSERT(level < MAX_TEXTURE_LEVELS);
    switch (target) {
       case GL_TEXTURE_1D:
          return texUnit->Current1D->Image[level];
@@ -631,6 +632,7 @@ texture_error_check( GLcontext *ctx, GLenum target,
 {
    GLboolean isProxy;
    GLint iformat;
+   GLint maxLevels = 0, maxTextureSize;
 
    if (dimensions == 1) {
       isProxy = (GLboolean) (target == GL_PROXY_TEXTURE_1D);
@@ -638,6 +640,7 @@ texture_error_check( GLcontext *ctx, GLenum target,
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage1D(target)" );
          return GL_TRUE;
       }
+      maxLevels = ctx->Const.MaxTextureLevels;
    }
    else if (dimensions == 2) {
       isProxy = (GLboolean) (target == GL_PROXY_TEXTURE_2D ||
@@ -649,6 +652,10 @@ texture_error_check( GLcontext *ctx, GLenum target,
           _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage2D(target)" );
           return GL_TRUE;
       }
+      if (target == GL_PROXY_TEXTURE_2D && target == GL_TEXTURE_2D)
+         maxLevels = ctx->Const.MaxTextureLevels;
+      else
+         maxLevels = ctx->Const.MaxCubeTextureLevels;
    }
    else if (dimensions == 3) {
       isProxy = (GLboolean) (target == GL_PROXY_TEXTURE_3D);
@@ -656,12 +663,16 @@ texture_error_check( GLcontext *ctx, GLenum target,
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexImage3D(target)" );
          return GL_TRUE;
       }
+      maxLevels = ctx->Const.Max3DTextureLevels;
    }
    else {
       _mesa_problem( ctx, "bad dims in texture_error_check" );
       return GL_TRUE;
    }
 
+   ASSERT(maxLevels > 0);
+   maxTextureSize = 1 << (maxLevels - 1);
+
    /* Border */
    if (border != 0 && border != 1) {
       if (!isProxy) {
@@ -673,7 +684,7 @@ texture_error_check( GLcontext *ctx, GLenum target,
    }
 
    /* Width */
-   if (width < 2 * border || width > 2 + ctx->Const.MaxTextureSize
+   if (width < 2 * border || width > 2 + maxTextureSize
        || logbase2( width - 2 * border ) < 0) {
       if (!isProxy) {
          char message[100];
@@ -685,7 +696,7 @@ texture_error_check( GLcontext *ctx, GLenum target,
 
    /* Height */
    if (dimensions >= 2) {
-      if (height < 2 * border || height > 2 + ctx->Const.MaxTextureSize
+      if (height < 2 * border || height > 2 + maxTextureSize
           || logbase2( height - 2 * border ) < 0) {
          if (!isProxy) {
             char message[100];
@@ -709,7 +720,7 @@ texture_error_check( GLcontext *ctx, GLenum target,
 
    /* Depth */
    if (dimensions >= 3) {
-      if (depth < 2 * border || depth > 2 + ctx->Const.MaxTextureSize
+      if (depth < 2 * border || depth > 2 + maxTextureSize
           || logbase2( depth - 2 * border ) < 0) {
          if (!isProxy) {
             char message[100];
@@ -721,7 +732,7 @@ texture_error_check( GLcontext *ctx, GLenum target,
    }
 
    /* Level */
-   if (level < 0 || level >= ctx->Const.MaxTextureLevels) {
+   if (level < 0 || level >= maxLevels) {
       if (!isProxy) {
          char message[100];
          sprintf(message, "glTexImage%dD(level=%d)", dimensions, level);
@@ -784,12 +795,14 @@ subtexture_error_check( GLcontext *ctx, GLuint dimensions,
 {
    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    struct gl_texture_image *destTex;
+   GLint maxLevels = 0;
 
    if (dimensions == 1) {
       if (target != GL_TEXTURE_1D) {
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage1D(target)" );
          return GL_TRUE;
       }
+      maxLevels = ctx->Const.MaxTextureLevels;
    }
    else if (dimensions == 2) {
       if (ctx->Extensions.ARB_texture_cube_map) {
@@ -804,19 +817,26 @@ subtexture_error_check( GLcontext *ctx, GLuint dimensions,
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" );
          return GL_TRUE;
       }
+      if (target == GL_PROXY_TEXTURE_2D && target == GL_TEXTURE_2D)
+         maxLevels = ctx->Const.MaxTextureLevels;
+      else
+         maxLevels = ctx->Const.MaxCubeTextureLevels;
    }
    else if (dimensions == 3) {
       if (target != GL_TEXTURE_3D) {
          _mesa_error( ctx, GL_INVALID_ENUM, "glTexSubImage3D(target)" );
          return GL_TRUE;
       }
+      maxLevels = ctx->Const.Max3DTextureLevels;
    }
    else {
       _mesa_problem( ctx, "bad dims in texture_error_check" );
       return GL_TRUE;
    }
 
-   if (level < 0 || level >= ctx->Const.MaxTextureLevels) {
+   ASSERT(maxLevels > 0);
+
+   if (level < 0 || level >= maxLevels) {
       char message[100];
       sprintf(message, "glTexSubImage2D(level=%d)", level);
       _mesa_error(ctx, GL_INVALID_ENUM, message);
@@ -901,12 +921,14 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
                          GLint width, GLint height, GLint border )
 {
    GLint iformat;
+   GLint maxLevels = 0, maxTextureSize;
 
    if (dimensions == 1) {
       if (target != GL_TEXTURE_1D) {
          _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexImage1D(target)" );
          return GL_TRUE;
       }
+      maxLevels = ctx->Const.MaxTextureLevels;
    }
    else if (dimensions == 2) {
       if (ctx->Extensions.ARB_texture_cube_map) {
@@ -921,8 +943,15 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
          _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexImage2D(target)" );
          return GL_TRUE;
       }
+      if (target == GL_PROXY_TEXTURE_2D && target == GL_TEXTURE_2D)
+         maxLevels = ctx->Const.MaxTextureLevels;
+      else
+         maxLevels = ctx->Const.MaxCubeTextureLevels;
    }
 
+   ASSERT(maxLevels > 0);
+   maxTextureSize = 1 << (maxLevels - 1);
+
    /* Border */
    if (border != 0 && border != 1) {
       char message[100];
@@ -932,7 +961,7 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
    }
 
    /* Width */
-   if (width < 2 * border || width > 2 + ctx->Const.MaxTextureSize
+   if (width < 2 * border || width > 2 + maxTextureSize
        || logbase2( width - 2 * border ) < 0) {
       char message[100];
       sprintf(message, "glCopyTexImage%dD(width=%d)", dimensions, width);
@@ -942,7 +971,7 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
 
    /* Height */
    if (dimensions >= 2) {
-      if (height < 2 * border || height > 2 + ctx->Const.MaxTextureSize
+      if (height < 2 * border || height > 2 + maxTextureSize
           || logbase2( height - 2 * border ) < 0) {
          char message[100];
          sprintf(message, "glCopyTexImage%dD(height=%d)", dimensions, height);
@@ -961,14 +990,14 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
    }
 
    /* Level */
-   if (level < 0 || level>=ctx->Const.MaxTextureLevels) {
+   if (level < 0 || level >= maxLevels) {
       char message[100];
       sprintf(message, "glCopyTexImage%dD(level=%d)", dimensions, level);
       _mesa_error(ctx, GL_INVALID_VALUE, message);
       return GL_TRUE;
    }
 
-   iformat = _mesa_base_tex_format( ctx, internalFormat );
+   iformat = _mesa_base_tex_format(ctx, internalFormat);
    if (iformat < 0) {
       char message[100];
       sprintf(message, "glCopyTexImage%dD(internalFormat)", dimensions);
@@ -989,12 +1018,14 @@ copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions,
 {
    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
    struct gl_texture_image *teximage;
+   GLint maxLevels = 0;
 
    if (dimensions == 1) {
       if (target != GL_TEXTURE_1D) {
          _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage1D(target)" );
          return GL_TRUE;
       }
+      maxLevels = ctx->Const.MaxTextureLevels;
    }
    else if (dimensions == 2) {
       if (ctx->Extensions.ARB_texture_cube_map) {
@@ -1009,15 +1040,22 @@ copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions,
          _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" );
          return GL_TRUE;
       }
+      if (target == GL_PROXY_TEXTURE_2D && target == GL_TEXTURE_2D)
+         maxLevels = ctx->Const.MaxTextureLevels;
+      else
+         maxLevels = ctx->Const.MaxCubeTextureLevels;
    }
    else if (dimensions == 3) {
       if (target != GL_TEXTURE_3D) {
          _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage3D(target)" );
          return GL_TRUE;
       }
+      maxLevels = ctx->Const.Max3DTextureLevels;
    }
 
-   if (level < 0 || level >= ctx->Const.MaxTextureLevels) {
+   ASSERT(maxLevels > 0);
+
+   if (level < 0 || level >= maxLevels) {
       char message[100];
       sprintf(message, "glCopyTexSubImage%dD(level=%d)", dimensions, level);
       _mesa_error(ctx, GL_INVALID_VALUE, message);
@@ -1101,10 +1139,30 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
    const struct gl_texture_unit *texUnit;
    const struct gl_texture_object *texObj;
    struct gl_texture_image *texImage;
+   GLint maxLevels = 0;
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-   if (level < 0 || level >= ctx->Const.MaxTextureLevels) {
+   texUnit = &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
+   texObj = _mesa_select_tex_object(ctx, texUnit, target);
+   if (!texObj || is_proxy_target(target)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)");
+      return;
+   }
+
+   if (target == GL_TEXTURE_1D || target == GL_TEXTURE_2D) {
+      maxLevels = ctx->Const.MaxTextureLevels;
+   }
+   else if (target == GL_TEXTURE_3D) {
+      maxLevels = ctx->Const.Max3DTextureLevels;
+   }
+   else {
+      maxLevels = ctx->Const.MaxCubeTextureLevels;
+   }
+
+   ASSERT(maxLevels > 0);
+
+   if (level < 0 || level >= maxLevels) {
       _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexImage(level)" );
       return;
    }
@@ -1133,13 +1191,6 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
    if (!pixels)
       return;
 
-   texUnit = &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
-   texObj = _mesa_select_tex_object(ctx, texUnit, target);
-   if (!texObj || is_proxy_target(target)) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)");
-      return;
-   }
-
    texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
    if (!texImage) {
       /* invalid mipmap level, not an error */
@@ -1173,7 +1224,7 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
                }
                _mesa_pack_index_span(ctx, width, type, dest,
                                      indexRow, &ctx->Pack,
-                                     ctx->_ImageTransferState);
+                                     0 /* no image transfer */);
             }
             else if (format == GL_DEPTH_COMPONENT) {
                GLfloat depthRow[MAX_WIDTH];
@@ -1195,7 +1246,7 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
                }
                _mesa_pack_rgba_span(ctx, width, (const GLchan (*)[4])rgba,
                                     format, type, dest, &ctx->Pack,
-                                    ctx->_ImageTransferState);
+                                    0 /* no image transfer */);
             } /* format */
          } /* row */
       } /* img */
@@ -1414,7 +1465,9 @@ _mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
       }
       if (error) {
          /* if error, clear all proxy texture image parameters */
-         if (level >= 0 && level < ctx->Const.MaxTextureLevels) {
+         const GLint maxLevels = (target == GL_PROXY_TEXTURE_2D) ?
+            ctx->Const.MaxTextureLevels : ctx->Const.MaxCubeTextureLevels;
+         if (level >= 0 && level < maxLevels) {
             clear_teximage_fields(ctx->Texture.Proxy2D->Image[level]);
          }
       }
@@ -1520,7 +1573,7 @@ _mesa_TexImage3D( GLenum target, GLint level, GLenum internalFormat,
       }
       if (error) {
          /* if error, clear all proxy texture image parameters */
-         if (level >= 0 && level < ctx->Const.MaxTextureLevels) {
+         if (level >= 0 && level < ctx->Const.Max3DTextureLevels) {
             clear_teximage_fields(ctx->Texture.Proxy3D->Image[level]);
          }
       }
@@ -2013,7 +2066,7 @@ _mesa_CompressedTexImage1DARB(GLenum target, GLint level,
       }
    }
    else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glCompressedTexImage1DARB(target)" );
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage1DARB(target)");
       return;
    }
 }
@@ -2106,13 +2159,15 @@ _mesa_CompressedTexImage2DARB(GLenum target, GLint level,
       }
       if (error) {
          /* if error, clear all proxy texture image parameters */
-         if (level >= 0 && level < ctx->Const.MaxTextureLevels) {
+         const GLint maxLevels = (target == GL_PROXY_TEXTURE_2D) ?
+            ctx->Const.MaxTextureLevels : ctx->Const.MaxCubeTextureLevels;
+         if (level >= 0 && level < maxLevels) {
             clear_teximage_fields(ctx->Texture.Proxy2D->Image[level]);
          }
       }
    }
    else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glCompressedTexImage2DARB(target)" );
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage2DARB(target)");
       return;
    }
 }
@@ -2203,13 +2258,13 @@ _mesa_CompressedTexImage3DARB(GLenum target, GLint level,
       }
       if (error) {
          /* if error, clear all proxy texture image parameters */
-         if (level >= 0 && level < ctx->Const.MaxTextureLevels) {
+         if (level >= 0 && level < ctx->Const.Max3DTextureLevels) {
             clear_teximage_fields(ctx->Texture.Proxy3D->Image[level]);
          }
       }
    }
    else {
-      _mesa_error( ctx, GL_INVALID_ENUM, "glCompressedTexImage3DARB(target)" );
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage3DARB(target)");
       return;
    }
 }
@@ -2326,11 +2381,31 @@ _mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)
    const struct gl_texture_unit *texUnit;
    const struct gl_texture_object *texObj;
    struct gl_texture_image *texImage;
+   GLint maxLevels;
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-   if (level < 0 || level >= ctx->Const.MaxTextureLevels) {
-      _mesa_error( ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)" );
+   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   texObj = _mesa_select_tex_object(ctx, texUnit, target);
+   if (!texObj) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB");
+      return;
+   }
+
+   if (target == GL_TEXTURE_1D || target == GL_TEXTURE_2D) {
+      maxLevels = ctx->Const.MaxTextureLevels;
+   }
+   else if (target == GL_TEXTURE_3D) {
+      maxLevels = ctx->Const.Max3DTextureLevels;
+   }
+   else {
+      maxLevels = ctx->Const.MaxCubeTextureLevels;
+   }
+
+   ASSERT(maxLevels > 0);
+
+   if (level < 0 || level >= maxLevels) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)");
       return;
    }
 
@@ -2339,10 +2414,7 @@ _mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)
       return;
    }
 
-   texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-   texObj = _mesa_select_tex_object(ctx, texUnit, target);
    texImage = _mesa_select_tex_image(ctx, texUnit, target, level);
-
    if (!texImage) {
       /* invalid mipmap level */
       _mesa_error(ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)");
diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c
index 644d99a9e7..7f46619203 100644
--- a/src/mesa/main/texobj.c
+++ b/src/mesa/main/texobj.c
@@ -1,4 +1,4 @@
-/* $Id: texobj.c,v 1.48 2001/04/25 18:21:05 brianp Exp $ */
+/* $Id: texobj.c,v 1.49 2001/06/13 14:56:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -181,7 +181,7 @@ _mesa_test_texobj_completeness( const GLcontext *ctx,
                                 struct gl_texture_object *t )
 {
    const GLint baseLevel = t->BaseLevel;
-   GLint maxLog2 = 0;
+   GLint maxLog2 = 0, maxLevels = 0;
 
    t->Complete = GL_TRUE;  /* be optimistic */
 
@@ -195,20 +195,30 @@ _mesa_test_texobj_completeness( const GLcontext *ctx,
    /* Compute _MaxLevel */
    if (t->Dimensions == 1) {
       maxLog2 = t->Image[baseLevel]->WidthLog2;
+      maxLevels = ctx->Const.MaxTextureLevels;
    }
    else if (t->Dimensions == 2 || t->Dimensions == 6) {
       maxLog2 = MAX2(t->Image[baseLevel]->WidthLog2,
                      t->Image[baseLevel]->HeightLog2);
+      maxLevels = (t->Dimensions == 2) ?
+         ctx->Const.MaxTextureLevels : ctx->Const.MaxCubeTextureLevels;
    }
    else if (t->Dimensions == 3) {
       GLint max = MAX2(t->Image[baseLevel]->WidthLog2,
                        t->Image[baseLevel]->HeightLog2);
       maxLog2 = MAX2(max, (GLint)(t->Image[baseLevel]->DepthLog2));
+      maxLevels = ctx->Const.Max3DTextureLevels;
    }
+   else {
+      _mesa_problem(ctx, "Bad t->Dimension in _mesa_test_texobj_completeness");
+      return;
+   }
+
+   ASSERT(maxLevels > 0);
 
    t->_MaxLevel = baseLevel + maxLog2;
    t->_MaxLevel = MIN2(t->_MaxLevel, t->MaxLevel);
-   t->_MaxLevel = MIN2(t->_MaxLevel, ctx->Const.MaxTextureLevels - 1);
+   t->_MaxLevel = MIN2(t->_MaxLevel, maxLevels - 1);
 
    /* Compute _MaxLambda = q - b (see the 1.2 spec) used during mipmapping */
    t->_MaxLambda = (GLfloat) (t->_MaxLevel - t->BaseLevel);
@@ -272,7 +282,7 @@ _mesa_test_texobj_completeness( const GLcontext *ctx,
       if (t->Dimensions == 1) {
          /* Test 1-D mipmaps */
          GLuint width = t->Image[baseLevel]->Width2;
-         for (i = baseLevel + 1; i < ctx->Const.MaxTextureLevels; i++) {
+         for (i = baseLevel + 1; i < maxLevels; i++) {
             if (width > 1) {
                width /= 2;
             }
@@ -297,7 +307,7 @@ _mesa_test_texobj_completeness( const GLcontext *ctx,
          /* Test 2-D mipmaps */
          GLuint width = t->Image[baseLevel]->Width2;
          GLuint height = t->Image[baseLevel]->Height2;
-         for (i = baseLevel + 1; i < ctx->Const.MaxTextureLevels; i++) {
+         for (i = baseLevel + 1; i < maxLevels; i++) {
             if (width > 1) {
                width /= 2;
             }
@@ -331,7 +341,7 @@ _mesa_test_texobj_completeness( const GLcontext *ctx,
          GLuint width = t->Image[baseLevel]->Width2;
          GLuint height = t->Image[baseLevel]->Height2;
          GLuint depth = t->Image[baseLevel]->Depth2;
-	 for (i = baseLevel + 1; i < ctx->Const.MaxTextureLevels; i++) {
+	 for (i = baseLevel + 1; i < maxLevels; i++) {
             if (width > 1) {
                width /= 2;
             }
@@ -372,7 +382,7 @@ _mesa_test_texobj_completeness( const GLcontext *ctx,
          /* make sure 6 cube faces are consistant */
          GLuint width = t->Image[baseLevel]->Width2;
          GLuint height = t->Image[baseLevel]->Height2;
-	 for (i = baseLevel + 1; i < ctx->Const.MaxTextureLevels; i++) {
+	 for (i = baseLevel + 1; i < maxLevels; i++) {
             if (width > 1) {
                width /= 2;
             }
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index 9615684a01..09bf872fe4 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -1,4 +1,4 @@
-/* $Id: texstate.c,v 1.52 2001/06/12 22:08:41 brianp Exp $ */
+/* $Id: texstate.c,v 1.53 2001/06/13 14:56:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1133,19 +1133,36 @@ _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
    const struct gl_texture_image *img = NULL;
    GLuint dimensions;
    GLboolean isProxy;
+   GLint maxLevels;
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   if (level < 0 || level >= ctx->Const.MaxTextureLevels) {
-      _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
-      return;
-   }
-
    dimensions = tex_image_dimensions(ctx, target);  /* 1, 2 or 3 */
    if (dimensions == 0) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(target)");
       return;
    }
 
+   switch (target) {
+   case GL_TEXTURE_1D:
+   case GL_PROXY_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_PROXY_TEXTURE_2D:
+      maxLevels = ctx->Const.MaxTextureLevels;
+      break;
+   case GL_TEXTURE_3D:
+   case GL_PROXY_TEXTURE_3D:
+      maxLevels = ctx->Const.Max3DTextureLevels;
+      break;
+   default:
+      maxLevels = ctx->Const.MaxCubeTextureLevels;
+      break;
+   }
+
+   if (level < 0 || level >= maxLevels) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
+      return;
+   }
+
    img = _mesa_select_tex_image(ctx, texUnit, target, level);
    if (!img || !img->TexFormat) {
       /* undefined texture image */
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index 0947e11622..792f58bb97 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -1,4 +1,4 @@
-/* $Id: texstore.c,v 1.27 2001/05/24 14:47:56 brianp Exp $ */
+/* $Id: texstore.c,v 1.28 2001/06/13 14:56:14 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1544,6 +1544,7 @@ _mesa_generate_mipmap(GLcontext *ctx,
                                   0 };
    const GLenum *targets;
    GLuint level;
+   GLint maxLevels = 0;
 
    ASSERT(texObj);
    ASSERT(texObj->Image[texObj->BaseLevel]);
@@ -1551,15 +1552,19 @@ _mesa_generate_mipmap(GLcontext *ctx,
    switch (texObj->Dimensions) {
    case 1:
       targets = targets1D;
+      maxLevels = ctx->Const.MaxTextureLevels;
       break;
    case 2:
       targets = targets2D;
+      maxLevels = ctx->Const.MaxTextureLevels;
       break;
    case 3:
       targets = targets3D;
+      maxLevels = ctx->Const.Max3DTextureLevels;
       break;
    case 6:
       targets = targetsCube;
+      maxLevels = ctx->Const.MaxCubeTextureLevels;
       break;
    default:
       _mesa_problem(ctx,
@@ -1568,7 +1573,7 @@ _mesa_generate_mipmap(GLcontext *ctx,
    }
 
    for (level = texObj->BaseLevel; level < texObj->MaxLevel
-           && level < ctx->Const.MaxTextureLevels - 1; level++) {
+           && level < maxLevels - 1; level++) {
       /* generate image[level+1] from image[level] */
       const struct gl_texture_image *srcImage;
       struct gl_texture_image *dstImage;