diff options
| author | Dave Airlie <[email protected]> | 2015-02-24 14:09:40 +1000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2015-12-01 12:58:43 +1000 |
| commit | 4f347225752b48f3dc5a59a6be71fe78616252a7 (patch) | |
| tree | b9d34d797b7b65f8503fe81482a43e02e6dbf7bb /src/gallium/drivers/r600/r600_shader.c | |
| parent | 04efcc6c7adfda75b425f443588f0faab453ba3a (diff) | |
r600: workaround empty geom shader.
We need to emit at least one cut/emit in every
geometry shader, the easiest workaround it to
stick a single CUT at the top of each geom shader.
Reviewed-by: Marek Olšák <[email protected]>
Cc: "10.6 11.0 11.1" <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'src/gallium/drivers/r600/r600_shader.c')
| -rw-r--r-- | src/gallium/drivers/r600/r600_shader.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index 6233753e716..9fe20b02861 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -2219,6 +2219,11 @@ static int r600_shader_from_tgsi(struct r600_context *rctx, if (ctx.type == TGSI_PROCESSOR_GEOMETRY) { struct r600_bytecode_alu alu; int r; + + /* GS thread with no output workaround - emit a cut at start of GS */ + if (ctx.bc->chip_class == R600) + r600_bytecode_add_cfinst(ctx.bc, CF_OP_CUT_VERTEX); + for (j = 0; j < 4; j++) { memset(&alu, 0, sizeof(struct r600_bytecode_alu)); alu.op = ALU_OP1_MOV; |