summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/gallium/state_trackers/wgl/stw_framebuffer.c50
1 files changed, 38 insertions, 12 deletions
diff --git a/src/gallium/state_trackers/wgl/stw_framebuffer.c b/src/gallium/state_trackers/wgl/stw_framebuffer.c
index d8b1440a688..4033365bfbe 100644
--- a/src/gallium/state_trackers/wgl/stw_framebuffer.c
+++ b/src/gallium/state_trackers/wgl/stw_framebuffer.c
@@ -117,13 +117,26 @@ stw_framebuffer_get_size( struct stw_framebuffer *fb )
RECT window_rect;
POINT client_pos;
+ /*
+ * Sanity checking.
+ */
+
assert(fb->hWnd);
-
- /* Get the client area size. */
- GetClientRect( fb->hWnd, &client_rect );
+ assert(fb->width && fb->height);
+ assert(fb->client_rect.right == fb->client_rect.left + fb->width);
+ assert(fb->client_rect.bottom == fb->client_rect.top + fb->height);
+
+ /*
+ * Get the client area size.
+ */
+
+ if (!GetClientRect(fb->hWnd, &client_rect)) {
+ return;
+ }
+
assert(client_rect.left == 0);
assert(client_rect.top == 0);
- width = client_rect.right - client_rect.left;
+ width = client_rect.right - client_rect.left;
height = client_rect.bottom - client_rect.top;
if (width <= 0 || height <= 0) {
@@ -138,7 +151,7 @@ stw_framebuffer_get_size( struct stw_framebuffer *fb )
return;
}
- if(width != fb->width || height != fb->height) {
+ if (width != fb->width || height != fb->height) {
fb->must_resize = TRUE;
fb->width = width;
fb->height = height;
@@ -146,14 +159,14 @@ stw_framebuffer_get_size( struct stw_framebuffer *fb )
client_pos.x = 0;
client_pos.y = 0;
- ClientToScreen(fb->hWnd, &client_pos);
-
- GetWindowRect(fb->hWnd, &window_rect);
+ if (ClientToScreen(fb->hWnd, &client_pos) &&
+ GetWindowRect(fb->hWnd, &window_rect)) {
+ fb->client_rect.left = client_pos.x - window_rect.left;
+ fb->client_rect.top = client_pos.y - window_rect.top;
+ }
- fb->client_rect.left = client_pos.x - window_rect.left;
- fb->client_rect.top = client_pos.y - window_rect.top;
- fb->client_rect.right = fb->client_rect.left + fb->width;
- fb->client_rect.bottom = fb->client_rect.top + fb->height;
+ fb->client_rect.right = fb->client_rect.left + fb->width;
+ fb->client_rect.bottom = fb->client_rect.top + fb->height;
#if 0
debug_printf("\n");
@@ -253,6 +266,19 @@ stw_framebuffer_create(
fb->refcnt = 1;
+ /*
+ * Windows can be sometimes have zero width and or height, but we ensure
+ * a non-zero framebuffer size at all times.
+ */
+
+ fb->must_resize = TRUE;
+ fb->width = 1;
+ fb->height = 1;
+ fb->client_rect.left = 0;
+ fb->client_rect.top = 0;
+ fb->client_rect.right = fb->client_rect.left + fb->width;
+ fb->client_rect.bottom = fb->client_rect.top + fb->height;
+
stw_framebuffer_get_size(fb);
pipe_mutex_init( fb->mutex );