intel/debug: allow silencing CL warnings

Useful for CI and users previously aware of the warning.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: David Heidelberg <david@ixit.cz>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29691>

docs/envvars.rst

@@ -631,6 +631,8 @@ Intel driver environment variables
       dump shader assembly for vertex shaders
    ``wm``
       dump shader assembly for fragment shaders (same as ``fs``)
+   ``cl-quiet``
+      quiets the OpenCL warnings recommending use of Intel compute-runtime
 
 .. envvar:: INTEL_DECODE
 

src/gallium/drivers/iris/iris_screen.c

@@ -126,7 +126,7 @@ static void
 iris_warn_cl()
 {
    static bool warned = false;
-   if (warned)
+   if (warned || INTEL_DEBUG(DEBUG_CL_QUIET))
       return;
 
    warned = true;

src/intel/dev/intel_debug.c

@@ -107,6 +107,7 @@ static const struct debug_control debug_control[] = {
    { "bat-stats",   DEBUG_BATCH_STATS },
    { "reg-pressure", DEBUG_REG_PRESSURE },
    { "shader-print", DEBUG_SHADER_PRINT },
+   { "cl-quiet",     DEBUG_CL_QUIET },
    { NULL,    0 }
 };
 

src/intel/dev/intel_debug.h

@@ -98,6 +98,7 @@ extern uint64_t intel_debug;
 #define DEBUG_BATCH_STATS         (1ull << 50)
 #define DEBUG_REG_PRESSURE        (1ull << 51)
 #define DEBUG_SHADER_PRINT        (1ull << 52)
+#define DEBUG_CL_QUIET            (1ull << 53)
 
 #define DEBUG_ANY                 (~0ull)