diff options
| author | Rob Clark <[email protected]> | 2015-03-12 17:18:33 -0400 |
|---|---|---|
| committer | Rob Clark <[email protected]> | 2015-04-05 16:36:40 -0400 |
| commit | 8b0b81339b9c3806981ee2ec7c08501bbd8bb7a3 (patch) | |
| tree | eae4eef9cb4804ad345ea16f72b89159620837f9 /src/gallium/drivers/freedreno/freedreno_screen.c | |
| parent | 700d949ea162a5036ffc3056adaa8eb3fecc9c2e (diff) | |
freedreno/ir3: add NIR compiler
The NIR compiler frontend is an alternative to the TGSI f/e, producing
the same ir3 IR and using the same backend passes for scheduling, etc.
It is not enabled by default yet, as there are still some regressions.
To enable, use 'FD_MESA_DEBUG=nir'. It is enough to use with, for
example, xonotic or supertuxkart.
With the NIR f/e, scalarizing and a number of other lowering steps
happen in NIR, so we don't have to do them in ir3. Which simplifies the
f/e and allows the lowered instructions to pass through other
optimization stages.
Signed-off-by: Rob Clark <[email protected]>
Diffstat (limited to 'src/gallium/drivers/freedreno/freedreno_screen.c')
| -rw-r--r-- | src/gallium/drivers/freedreno/freedreno_screen.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c index 66fe0e571cf..1b89387678d 100644 --- a/src/gallium/drivers/freedreno/freedreno_screen.c +++ b/src/gallium/drivers/freedreno/freedreno_screen.c @@ -71,6 +71,7 @@ static const struct debug_named_value debug_options[] = { {"optdump", FD_DBG_OPTDUMP,"Dump shader DAG to .dot files"}, {"glsl120", FD_DBG_GLSL120,"Temporary flag to force GLSL 120 (rather than 130) on a3xx+"}, {"nocp", FD_DBG_NOCP, "Disable copy-propagation"}, + {"nir", FD_DBG_NIR, "Enable experimental NIR compiler"}, DEBUG_NAMED_VALUE_END }; @@ -345,6 +346,10 @@ fd_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader, case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS: return 16384; case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH: + /* for now, let someone else flatten if/else when using NIR: */ + if ((fd_mesa_debug & FD_DBG_NIR) && + (is_a3xx(screen) || is_a4xx(screen))) + return 0; return 8; /* XXX */ case PIPE_SHADER_CAP_MAX_INPUTS: case PIPE_SHADER_CAP_MAX_OUTPUTS: |