Dont assume GLbooleans are ones when true.

diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c
index 7d1835f..1607756 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_state.c
+++ b/src/mesa/drivers/dri/r300/r300_state.c
@@ -608,7 +608,10 @@ static void r300ColorMask(GLcontext* ctx,
                          GLboolean r, GLboolean g, GLboolean b, GLboolean a)
 {
        r300ContextPtr r300 = R300_CONTEXT(ctx);
-       int mask = (b << 0) | (g << 1) | (r << 2) | (a << 3);
+       int mask = (r ? R300_COLORMASK0_R : 0) |
+                  (g ? R300_COLORMASK0_G : 0) |
+                  (b ? R300_COLORMASK0_B : 0) |
+                  (a ? R300_COLORMASK0_A : 0);
 
        if (mask != r300->hw.cmk.cmd[R300_CMK_COLORMASK]) {
                R300_STATECHANGE(r300, cmk);