Add more information and update formats

README.md

@@ -1,18 +1,42 @@
-# ROCm OpenCL™ Runtime 
+# OpenCL™ Compatible Runtime
 
-Please build/install ROCclr first.
+-   OpenCL 2.0 compatible language runtime
+-   Supports offline and in-process/in-memory compilation
 
-  Please view build steps here:
-  https://github.com/ROCm-Developer-Tools/ROCclr
+## Getting the source code
+Download the git projects using the following commands:
 
-## Building OpenCL
+```bash
+git clone -b master-next https://github.com/RadeonOpenCompute/ROCm-OpenCL-Runtime.git
+```
 
-cd $OPENCL_DIR
+## Repository branches
+The repository maintains several branches. The branches that are of importance are:
 
-mkdir -p build; cd build
+-    master-next: This is the default branch.
 
-cmake -DVDI_DIR="$VDI_DIR" -DLIBVDI_STATIC_DIR="$VDI_DIR/build" ..
+## Setup OpenCL
+Copy the amdocl64.icd file to /etc/OpenCL/vendors
 
-make
+```bash
+sudo cp api/opencl/config/amdocl64.icd /etc/OpenCL/vendors/
+```
 
+## Building
+This is the previous commands to build OpenCL runtime.
+
+```bash
+cd $OPENCL_DIR
+mkdir -p build; cd build
+cmake -DVDI_DIR="$ROCclr_DIR" -DLIBVDI_STATIC_DIR="$ROCclr_DIR/build" ..
+make -j$(nproc)
+```
+
+Previously, environment variable VDI_DIR was defined in [ROCclr ](https://github.com/ROCm-Developer-Tools/ROCclr). We did not use environment variable ROCclr_DIR. The cmake comand was:
+
+```bash
+cmake -DVDI_DIR="$VDI_DIR" -DLIBVDI_STATIC_DIR="$VDI_DIR/build" ..
+```
 
+---
+OpenCL™ is registered Trademark of Apple