<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - WebGL conformance/textures/misc/texture-size-limit.html fails" href="https://bugs.freedesktop.org/show_bug.cgi?id=99108#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - WebGL conformance/textures/misc/texture-size-limit.html fails" href="https://bugs.freedesktop.org/show_bug.cgi?id=99108">bug 99108</a> from <a class="email" href="mailto:xinghua.cao@intel.com" title="xinghua <xinghua.cao@intel.com>"> xinghua</a> <pre>The failure case may be related with <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - Can't configure a desktop with 3x4k monitors in one row" href="show_bug.cgi?id=98297">https://bugs.freedesktop.org/show_bug.cgi?id=98297</a> This bug changes "MaxTextureLevels" from 14 to 15. It means that buffer object size for GL_TEXTURE_CUBE_MAP is from 2425421824 to 9682681856. This size is too large that may cause mmap failure. // intel_bufmgr_gem.c static int drm_intel_gem_bo_map(drm_intel_bo *bo, int write_enable) { ... if (!bo_gem->mem_virtual) { struct drm_i915_gem_mmap mmap_arg; memclear(mmap_arg); mmap_arg.handle = bo_gem->gem_handle; mmap_arg.size = bo->size; ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_MMAP, &mmap_arg); ... } ... } drmIoctl call would fail, if call texImage2D continuously with same target but different format and type as below, gl.texImage2D(TEXTURE_CUBE_MAP_POSITIVE_X, 14, RGB, 1, 1, 0, RGB, UNSIGNED_SHORT_5_6_5, Unit16Array); gl.texImage2D(TEXTURE_CUBE_MAP_POSITIVE_X, 14, RGBA, 1, 1, 0, RGBA, UNSIGNED_BYTE, Unit8Array); It will create two buffer objects, their size all 9682681856. out_of_memory issue will frequently happen when mapping buf2 but buf1 does not be released. I am not sure this issue should be covered by application, or resolved by driver. Please help to check it, thank you.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>