From 341fb93c162052e0b1eff7f5e53c49aba498ee9a Mon Sep 17 00:00:00 2001 From: Ian Romanick <ian.d.romanick@intel.com> Date: Thu, 8 Aug 2013 12:33:04 -0700 Subject: meta: Don't call _mesa_Ortho with width or height of 0 Fixes failures in oglconform fbo mipmap.manual.color, mipmap.manual.colorAndDepth, mipmap.automatic, and mipmap.manualIterateTexTargets subtests. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com> Reviewed-by: Chad Versace <chad.versace@linux.intel.com> Cc: "9.2" <mesa-stable@lists.freedesktop.org> --- src/mesa/drivers/common/meta.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'src/mesa') diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c index c62927c5da7..69b06ed8e53 100644 --- a/src/mesa/drivers/common/meta.c +++ b/src/mesa/drivers/common/meta.c @@ -704,9 +704,14 @@ _mesa_meta_begin(struct gl_context *ctx, GLbitfield state) _mesa_LoadIdentity(); _mesa_MatrixMode(GL_PROJECTION); _mesa_LoadIdentity(); - _mesa_Ortho(0.0, ctx->DrawBuffer->Width, - 0.0, ctx->DrawBuffer->Height, - -1.0, 1.0); + + /* glOrtho with width = 0 or height = 0 generates GL_INVALID_VALUE. + * This can occur when there is no draw buffer. + */ + if (ctx->DrawBuffer->Width != 0 && ctx->DrawBuffer->Height != 0) + _mesa_Ortho(0.0, ctx->DrawBuffer->Width, + 0.0, ctx->DrawBuffer->Height, + -1.0, 1.0); } if (state & MESA_META_CLIP) { -- cgit v1.2.3