From f80bea2d8066d228e78a1744d036f69a0265116e Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Thu, 21 Jul 2016 22:13:38 -0700 Subject: [PATCH] mesa: Don't call GenerateMipmap if Width or Height == 0. One of the WebGL 2.0 conformance tests is trying to call glGenerateMipmaps with a width and height of 0. With the meta implementation, this generates a "framebuffer attachment incomplete" status, and falls back to the CPU path, calling MapTextureImage. Except that there's no actual texture to map, and we assert fail. There's no work to do in this case. The test expects it to succeed, so just return early with no error and avoid hassling the driver. Cc: mesa-stable@lists.freedesktop.org Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96911 Signed-off-by: Kenneth Graunke Reviewed-by: Anuj Phogat --- src/mesa/main/genmipmap.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/mesa/main/genmipmap.c b/src/mesa/main/genmipmap.c index c952c4f..97d3c62 100644 --- a/src/mesa/main/genmipmap.c +++ b/src/mesa/main/genmipmap.c @@ -149,6 +149,11 @@ _mesa_generate_texture_mipmap(struct gl_context *ctx, return; } + if (srcImage->Width == 0 || srcImage->Height == 0) { + _mesa_unlock_texture(ctx, texObj); + return; + } + if (target == GL_TEXTURE_CUBE_MAP) { GLuint face; for (face = 0; face < 6; face++) { -- 2.7.4