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-rw-r--r--src/mesa/drivers/dri/tdfx/tdfx_span.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/tdfx/tdfx_span.c b/src/mesa/drivers/dri/tdfx/tdfx_span.c
index ce895f8254..ee5eb459be 100644
--- a/src/mesa/drivers/dri/tdfx/tdfx_span.c
+++ b/src/mesa/drivers/dri/tdfx/tdfx_span.c
@@ -976,7 +976,7 @@ tdfxDDWriteDepthPixels(GLcontext * ctx, struct gl_renderbuffer *rb,
GetFbParams(fxMesa, &info, &backBufferInfo,
&ReadParams, sizeof(GLushort));
for (i = 0; i < n; i++) {
- if (mask[i] && visible_pixel(fxMesa, x[i], y[i])) {
+ if ((!mask || mask[i]) && visible_pixel(fxMesa, x[i], y[i])) {
xpos = x[i] + fxMesa->x_offset;
ypos = bottom - y[i];
d16 = depth[i];
@@ -1000,7 +1000,7 @@ tdfxDDWriteDepthPixels(GLcontext * ctx, struct gl_renderbuffer *rb,
GetFbParams(fxMesa, &info, &backBufferInfo,
&ReadParams, sizeof(GLuint));
for (i = 0; i < n; i++) {
- if (mask[i]) {
+ if (!mask || mask[i]) {
if (visible_pixel(fxMesa, x[i], y[i])) {
xpos = x[i] + fxMesa->x_offset;
ypos = bottom - y[i];