mesa: fix incorrect error for glCompressedSubTexImage

If a subtexture region isn't aligned to the compressed block size,
return GL_INVALID_OPERATION, not gl_INVALID_VALUE.

NOTE: This is a candidate for the stable branches.

Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 08af668..c22e853 100644 (file)
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -3574,13 +3574,13 @@ compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions,
    get_compressed_block_size(format, &bw, &bh);
 
    if ((xoffset % bw != 0) || (yoffset % bh != 0))
-      return GL_INVALID_VALUE;
+      return GL_INVALID_OPERATION;
 
    if ((width % bw != 0) && width != 2 && width != 1)
-      return GL_INVALID_VALUE;
+      return GL_INVALID_OPERATION;
 
    if ((height % bh != 0) && height != 2 && height != 1)
-      return GL_INVALID_VALUE;
+      return GL_INVALID_OPERATION;
 
    expectedSize = compressed_tex_size(width, height, depth, format);
    if (expectedSize != imageSize)