The XGL Sample Intel driver supports Linux.

System Requirements

Ubuntu 14.04 LTS, (Ubuntu 14.10 needed for DRI 3 demos)

sudo apt-get install git subversion cmake libgl1-mesa-dev freeglut3-dev libglm-dev libpng12-dev sudo apt-get build-dep mesa

BUILD

The sample driver uses cmake and should work with the usual cmake options and utilities. The standard build process builds the icd, the icd loader and all the tests.

Example debug build: cd xgl # cd to the root of the xgl git repository export KHRONOS_ACCOUNT_NAME= ./update_external_sources.sh # fetches and builds glslang, llvm, LunarGLASS, and BIL cmake -H. -Bdbuild -DCMAKE_BUILD_TYPE=Debug cd dbuild make

To run XGL programs you must tell the icd loader where to find the libraries. Set the environment variable LIBXGL_DRIVERS_PATH to the driver path. For example: export LIBXGL_DRIVERS_PATH=$PWD/icd/intel

TEST

The test executibles can be found in the dbuild/tests directory. The tests use the Google gtest infrastructure. Tests avilable so far:

  • xglinfo: Report GPU properties
  • xglbase: Test basic entry points
  • xgl_blit_tests: Test XGL Blits (copy, clear, and resolve)
  • xgl_image_tests: Test XGL image related calls needed by render_test
  • xgl_render_tests: Render a single triangle with XGL. Triangle will be in a .ppm in the current directory at the end of the test.

DEMOS

The demos executibles can be found in the dbuild/demos directory. The demos use DRI 3 to render directly onto window surfaces.

  • tri: a textured triangle
  • cube: a textured spinning cube

RENDER NODES

The render tests depend on access to DRM render nodes. To make that available, a couple of config files need to be created to set a module option and make accessible device files. The system will need to be rebooted with these files in place to complete initialization. These commands will create the config files.

sudo tee /etc/modprobe.d/drm.conf << EOF

Enable render nodes

options drm rnodes=1 EOF

sudo tee /etc/udev/rules.d/drm.rules << EOF

Add permissions to render nodes

SUBSYSTEM==“drm”, ACTION==“add”, DEVPATH==“/devices//renderD”, MODE=“020666” EOF