From b93cf55f4ecd94f5e9d5dda49d9092e3b769d044 Mon Sep 17 00:00:00 2001 From: Brian Date: Tue, 26 Feb 2008 14:26:40 -0700 Subject: [PATCH] gallium: fix zero-sized viewport bug If st_create_framebuffer() is called with width=0, height=0 and the program never called glViewport, the viewport wasn't properly initalized. This fixes that. --- src/mesa/state_tracker/st_framebuffer.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/src/mesa/state_tracker/st_framebuffer.c b/src/mesa/state_tracker/st_framebuffer.c index bca3fa5c383..47d47daf2a1 100644 --- a/src/mesa/state_tracker/st_framebuffer.c +++ b/src/mesa/state_tracker/st_framebuffer.c @@ -124,6 +124,17 @@ void st_resize_framebuffer( struct st_framebuffer *stfb, if (stfb->Base.Width != width || stfb->Base.Height != height) { GET_CURRENT_CONTEXT(ctx); if (ctx) { + if (stfb->InitWidth == 0 && stfb->InitHeight == 0) { + /* didn't have a valid size until now */ + stfb->InitWidth = width; + stfb->InitHeight = height; + if (ctx->Viewport.Width <= 1) { + /* set context's initial viewport/scissor size */ + _mesa_set_viewport(ctx, 0, 0, width, height); + _mesa_set_scissor(ctx, 0, 0, width, height); + } + } + _mesa_resize_framebuffer(ctx, &stfb->Base, width, height); assert(stfb->Base.Width == width); -- 2.30.2