diff options
Diffstat (limited to 'src/mesa/vbo/vbo_exec_api.c')
| -rw-r--r-- | src/mesa/vbo/vbo_exec_api.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/src/mesa/vbo/vbo_exec_api.c b/src/mesa/vbo/vbo_exec_api.c index d70b4bb1a11..23f4f8331e3 100644 --- a/src/mesa/vbo/vbo_exec_api.c +++ b/src/mesa/vbo/vbo_exec_api.c @@ -143,29 +143,37 @@ static void vbo_exec_copy_to_current( struct vbo_exec_context *exec ) for (i = VBO_ATTRIB_POS+1 ; i < VBO_ATTRIB_MAX ; i++) { if (exec->vtx.attrsz[i]) { - GLfloat *current = (GLfloat *)vbo->currval[i].Ptr; - /* Note: the exec->vtx.current[i] pointers point into the * ctx->Current.Attrib and ctx->Light.Material.Attrib arrays. */ - COPY_CLEAN_4V(current, - exec->vtx.attrsz[i], - exec->vtx.attrptr[i]); + GLfloat *current = (GLfloat *)vbo->currval[i].Ptr; + GLfloat tmp[4]; + + COPY_CLEAN_4V(tmp, + exec->vtx.attrsz[i], + exec->vtx.attrptr[i]); + + if (memcmp(current, tmp, sizeof(tmp)) != 0) + { + memcpy(current, tmp, sizeof(tmp)); - /* Given that we explicitly state size here, there is no need - * for the COPY_CLEAN above, could just copy 16 bytes and be - * done. The only problem is when Mesa accesses ctx->Current - * directly. - */ - vbo->currval[i].Size = exec->vtx.attrsz[i]; - - /* This triggers rather too much recalculation of Mesa state - * that doesn't get used (eg light positions). - */ - if (i >= VBO_ATTRIB_MAT_FRONT_AMBIENT && - i <= VBO_ATTRIB_MAT_BACK_INDEXES) - ctx->NewState |= _NEW_LIGHT; + /* Given that we explicitly state size here, there is no need + * for the COPY_CLEAN above, could just copy 16 bytes and be + * done. The only problem is when Mesa accesses ctx->Current + * directly. + */ + vbo->currval[i].Size = exec->vtx.attrsz[i]; + + /* This triggers rather too much recalculation of Mesa state + * that doesn't get used (eg light positions). + */ + if (i >= VBO_ATTRIB_MAT_FRONT_AMBIENT && + i <= VBO_ATTRIB_MAT_BACK_INDEXES) + ctx->NewState |= _NEW_LIGHT; + + ctx->NewState |= _NEW_CURRENT_ATTRIB; + } } } |