From: Ian Romanick Date: Fri, 13 Nov 2015 19:58:41 +0000 (-0800) Subject: meta/generate_mipmap: Only modify the draw framebuffer binding in fallback_required X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c40a88b6c5a698e5297957e28cccf2ce23820caa;p=mesa.git meta/generate_mipmap: Only modify the draw framebuffer binding in fallback_required Previously GL_FRAMEBUFFER was used. However, if GL_EXT_framebuffer_blit is supported (note: it is supported by every Mesa driver), this is *sometimes* an alias for GL_DRAW_FRAMEBUFFER (getters) and *sometimes* an alias for *both* GL_DRAW_FRAMEBUFFER and GL_READ_FRAMEBUFFER (setters). As a result, the code saved one binding but modified both. If the bindings were different, the GL_READ_FRAMEBUFFER would be incorrect on exit. Fixes the piglit fbo-generatemipmap-versus-READ_FRAMEBUFFER test. Ideally this function would use DSA functions and not modify the binding at all. However, that would be a much more intrusive change because _mesa_meta_bind_fbo_image would also need to be modified. _mesa_meta_bind_fbo_image has a lot of callers. Much of this code is about to get a major rework due to bug #92363, so I don't think it matters too much. In fact, I discovered this bug while working on the other bug. Le bon temps! Signed-off-by: Ian Romanick Reviewed-by: Anuj Phogat Cc: "10.6 11.0" --- diff --git a/src/mesa/drivers/common/meta_generate_mipmap.c b/src/mesa/drivers/common/meta_generate_mipmap.c index a9da0a21ba3..ffd71b6a199 100644 --- a/src/mesa/drivers/common/meta_generate_mipmap.c +++ b/src/mesa/drivers/common/meta_generate_mipmap.c @@ -102,13 +102,13 @@ fallback_required(struct gl_context *ctx, GLenum target, */ if (!mipmap->FBO) _mesa_GenFramebuffers(1, &mipmap->FBO); - _mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT, mipmap->FBO); + _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, mipmap->FBO); - _mesa_meta_bind_fbo_image(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, baseImage, 0); + _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, baseImage, 0); - status = _mesa_CheckFramebufferStatus(GL_FRAMEBUFFER_EXT); + status = _mesa_CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER); - _mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT, fboSave); + _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fboSave); if (status != GL_FRAMEBUFFER_COMPLETE_EXT) { _mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,