diff options
| author | Brian Paul <brianp@vmware.com> | 2009-11-05 16:48:50 -0700 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-11-05 16:48:52 -0700 |
| commit | 63191bd244f18fd78bebb9586d2b85ab9d5b38e2 (patch) | |
| tree | e7e7c3f44cd4d2d6391e349b3da8c95f9b763dc0 /src | |
| parent | 7c623905bc032480a0765093825f3bd105345121 (diff) | |
xmesa: pass pixmap to clip_for_xgetimage()
The code was assuming ctx->DrawBuffer == ctx->ReadBuffer.
Passing the pixmap is simpler and better.
Fixes a potential segfault.
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/x11/xm_span.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/mesa/drivers/x11/xm_span.c b/src/mesa/drivers/x11/xm_span.c index 309cefcb8e..c39d87c451 100644 --- a/src/mesa/drivers/x11/xm_span.c +++ b/src/mesa/drivers/x11/xm_span.c @@ -3773,7 +3773,7 @@ static void put_values_ci_ximage( PUT_VALUES_ARGS ) * else return number of pixels to skip in the destination array. */ static int -clip_for_xgetimage(GLcontext *ctx, GLuint *n, GLint *x, GLint *y) +clip_for_xgetimage(GLcontext *ctx, XMesaPixmap pixmap, GLuint *n, GLint *x, GLint *y) { XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaBuffer source = XMESA_BUFFER(ctx->DrawBuffer); @@ -3783,7 +3783,7 @@ clip_for_xgetimage(GLcontext *ctx, GLuint *n, GLint *x, GLint *y) GLint dx, dy; if (source->type == PBUFFER || source->type == PIXMAP) return 0; - XTranslateCoordinates(xmesa->display, source->frontxrb->pixmap, rootWin, + XTranslateCoordinates(xmesa->display, pixmap, rootWin, *x, *y, &dx, &dy, &child); if (dx >= screenWidth) { /* totally clipped on right */ @@ -3827,7 +3827,7 @@ get_row_ci(GLcontext *ctx, struct gl_renderbuffer *rb, #ifndef XFree86Server XMesaImage *span = NULL; int error; - int k = clip_for_xgetimage(ctx, &n, &x, &y); + int k = clip_for_xgetimage(ctx, xrb->pixmap, &n, &x, &y); if (k < 0) return; index += k; @@ -3892,7 +3892,7 @@ get_row_rgba(GLcontext *ctx, struct gl_renderbuffer *rb, #else int k; y = YFLIP(xrb, y); - k = clip_for_xgetimage(ctx, &n, &x, &y); + k = clip_for_xgetimage(ctx, xrb->pixmap, &n, &x, &y); if (k < 0) return; rgba += k; |