[Mesa-dev] [PATCH] r600g: implement NV_primitive_restart functionality

[Marek Olšák]

Needed for GL3.

I don't set PA_SU_SC_MODE_CNTL.MULTI_PRIM_IB_ENA.
piglit/primitive-restart does pass though. Tested on RV730.
---
 src/gallium/drivers/r600/r600_pipe.c         |    2 +-
 src/gallium/drivers/r600/r600_state_common.c |    4 ++++
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 4cf02c9..d180e36 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -360,6 +360,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_SM3:
 	case PIPE_CAP_SEAMLESS_CUBE_MAP:
 	case PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL:
+	case PIPE_CAP_PRIMITIVE_RESTART:
 		return 1;
 
 	/* Supported except the original R600. */
@@ -374,7 +375,6 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 
 	/* Unsupported features. */
 	case PIPE_CAP_STREAM_OUTPUT:
-	case PIPE_CAP_PRIMITIVE_RESTART:
 	case PIPE_CAP_TGSI_INSTANCEID:
 	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
diff --git a/src/gallium/drivers/r600/r600_state_common.c b/src/gallium/drivers/r600/r600_state_common.c
index 53a1313..853458f 100644
--- a/src/gallium/drivers/r600/r600_state_common.c
+++ b/src/gallium/drivers/r600/r600_state_common.c
@@ -619,6 +619,8 @@ void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
 		r600_pipe_state_add_reg(&rctx->vgt, R_028400_VGT_MAX_VTX_INDX, draw.info.max_index, 0xFFFFFFFF, NULL, 0);
 		r600_pipe_state_add_reg(&rctx->vgt, R_028404_VGT_MIN_VTX_INDX, draw.info.min_index, 0xFFFFFFFF, NULL, 0);
 		r600_pipe_state_add_reg(&rctx->vgt, R_028408_VGT_INDX_OFFSET, draw.info.index_bias, 0xFFFFFFFF, NULL, 0);
+		r600_pipe_state_add_reg(&rctx->vgt, R_02840C_VGT_MULTI_PRIM_IB_RESET_INDX, draw.info.restart_index, 0xFFFFFFFF, NULL, 0);
+		r600_pipe_state_add_reg(&rctx->vgt, R_028A94_VGT_MULTI_PRIM_IB_RESET_EN, draw.info.primitive_restart, 0xFFFFFFFF, NULL, 0);
 		r600_pipe_state_add_reg(&rctx->vgt, R_03CFF0_SQ_VTX_BASE_VTX_LOC, 0, 0xFFFFFFFF, NULL, 0);
 		r600_pipe_state_add_reg(&rctx->vgt, R_03CFF4_SQ_VTX_START_INST_LOC, draw.info.start_instance, 0xFFFFFFFF, NULL, 0);
 		r600_pipe_state_add_reg(&rctx->vgt, R_028814_PA_SU_SC_MODE_CNTL,
@@ -633,6 +635,8 @@ void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
 	r600_pipe_state_mod_reg(&rctx->vgt, draw.info.max_index);
 	r600_pipe_state_mod_reg(&rctx->vgt, draw.info.min_index);
 	r600_pipe_state_mod_reg(&rctx->vgt, draw.info.index_bias);
+	r600_pipe_state_mod_reg(&rctx->vgt, draw.info.restart_index);
+	r600_pipe_state_mod_reg(&rctx->vgt, draw.info.primitive_restart);
 	r600_pipe_state_mod_reg(&rctx->vgt, 0);
 	r600_pipe_state_mod_reg(&rctx->vgt, draw.info.start_instance);
 	if (draw.info.mode == PIPE_PRIM_QUADS || draw.info.mode == PIPE_PRIM_QUAD_STRIP || draw.info.mode == PIPE_PRIM_POLYGON) {
-- 
1.7.4.1