diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_surface_state.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c index 5e99592f4a5..b1f1df11993 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c +++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c @@ -729,6 +729,18 @@ brw_get_texture_swizzle(const struct gl_texture_object *t) } } + /* For a format with no alpha channel, force the alpha result to + * 1.0. (This allows for an RGBA texture to be used for an RGB + * format, for example). + */ + switch (img->_BaseFormat) { + case GL_RED: + case GL_RG: + case GL_RGB: + swizzles[3] = SWIZZLE_ONE; + break; + } + return MAKE_SWIZZLE4(swizzles[GET_SWZ(t->_Swizzle, 0)], swizzles[GET_SWZ(t->_Swizzle, 1)], swizzles[GET_SWZ(t->_Swizzle, 2)], |