diff options
Diffstat (limited to 'mesalib/src/mesa/main/fbobject.c')
| -rw-r--r-- | mesalib/src/mesa/main/fbobject.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c index 59a5ec32d..abc9d83a6 100644 --- a/mesalib/src/mesa/main/fbobject.c +++ b/mesalib/src/mesa/main/fbobject.c @@ -2979,8 +2979,8 @@ _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, /* extra checks for multisample copies... */ if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) { /* src and dest region sizes must be the same */ - if (srcX1 - srcX0 != dstX1 - dstX0 || - srcY1 - srcY0 != dstY1 - dstY0) { + if (abs(srcX1 - srcX0) != abs(dstX1 - dstX0) || + abs(srcY1 - srcY0) != abs(dstY1 - dstY0)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT(bad src/dst multisample region sizes)"); return; |