intel: stub out CompressedTexSubImage2D instead of segfaulting.

src/mesa/drivers/dri/intel/intel_tex.c

@@ -231,6 +231,7 @@ intelInitTextureFuncs(struct dd_function_table *functions)
 
    /* compressed texture functions */
    functions->CompressedTexImage2D = intelCompressedTexImage2D;
+   functions->CompressedTexSubImage2D = intelCompressedTexSubImage2D;
    functions->GetCompressedTexImage = intelGetCompressedTexImage;
 
    functions->NewTextureObject = intelNewTextureObject;

src/mesa/drivers/dri/intel/intel_tex.h

@@ -130,6 +130,16 @@ void intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 				struct gl_texture_object *texObj,
 				struct gl_texture_image *texImage );
 
+void intelCompressedTexSubImage2D(GLcontext * ctx,
+				  GLenum target,
+				  GLint level,
+				  GLint xoffset, GLint yoffset,
+				  GLsizei width, GLsizei height,
+				  GLenum format, GLsizei imageSize,
+				  const GLvoid * pixels,
+				  struct gl_texture_object *texObj,
+				  struct gl_texture_image *texImage);
+
 void intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 				GLvoid *pixels,
 				struct gl_texture_object *texObj,

src/mesa/drivers/dri/intel/intel_tex_subimage.c

@@ -184,3 +184,18 @@ intelTexSubImage1D(GLcontext * ctx,
                     format, type, pixels, packing, texObj, texImage);
 
 }
+
+void
+intelCompressedTexSubImage2D(GLcontext * ctx,
+			     GLenum target,
+			     GLint level,
+			     GLint xoffset, GLint yoffset,
+			     GLsizei width, GLsizei height,
+			     GLenum format, GLsizei imageSize,
+			     const GLvoid * pixels,
+			     struct gl_texture_object *texObj,
+			     struct gl_texture_image *texImage)
+{
+   fprintf(stderr, "stubbed CompressedTexSubImage2D: %dx%d@%dx%d\n",
+	   width, height, xoffset, yoffset);
+}