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st/wgl: add null pointer check for HUD texture

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Fixes crash when using HUD with Nobel Clinician Viewer.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul 2015-07-06 14:53:06 -06:00 • committed by Jose Fonseca
parent 75d1e363ff
commit 28f6faca51
1 changed files with 3 additions and 1 deletions
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4
src/gallium/state_trackers/wgl/stw_framebuffer.c
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@ -611,7 +611,9 @@ DrvSwapBuffers(HDC hdc)
/* Display the HUD */
struct pipe_resource *back =
stw_get_framebuffer_resource(fb->stfb, ST_ATTACHMENT_BACK_LEFT);
hud_draw(ctx->hud, back);
if (back) {
hud_draw(ctx->hud, back);
}
}
if (ctx->current_framebuffer == fb) {