radeonsi: move clip plane constant buffer to RW buffers

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

4 files changed, 12 insertions, 14 deletions

diff --git a/src/gallium/drivers/radeonsi/si_descriptors.c b/src/gallium/drivers/radeonsi/si_descriptors.c
index 034794467a..7be735a0a6 100644
--- a/src/gallium/drivers/radeonsi/si_descriptors.c
+++ b/src/gallium/drivers/radeonsi/si_descriptors.c
@@ -783,9 +783,9 @@ void si_upload_const_buffer(struct si_context *sctx, struct r600_resource **rbuf
 		util_memcpy_cpu_to_le32(tmp, ptr, size);
 }
 
-static void si_set_constant_buffer(struct si_context *sctx,
-				   struct si_buffer_resources *buffers,
-				   uint slot, struct pipe_constant_buffer *input)
+void si_set_constant_buffer(struct si_context *sctx,
+			    struct si_buffer_resources *buffers,
+			    uint slot, struct pipe_constant_buffer *input)
 {
 	assert(slot < buffers->desc.num_elements);
 	pipe_resource_reference(&buffers->buffers[slot], NULL);
@@ -1413,14 +1413,6 @@ void si_emit_graphics_shader_userdata(struct si_context *sctx,
 	unsigned i;
 	uint32_t *sh_base = sctx->shader_userdata.sh_base;
 
-	if (sctx->gs_shader.cso) {
-		/* The VS copy shader needs this for clipping. */
-		unsigned vs_base = R_00B130_SPI_SHADER_USER_DATA_VS_0;
-		unsigned i = PIPE_SHADER_VERTEX;
-
-		si_emit_shader_pointer(sctx, &sctx->const_buffers[i].desc, vs_base, true);
-	}
-
 	if (sctx->rw_buffers.desc.pointer_dirty) {
 		si_emit_shader_pointer(sctx, &sctx->rw_buffers.desc,
 				       R_00B030_SPI_SHADER_USER_DATA_PS_0, true);
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index f698c63539..fc3e5c0d92 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -1690,8 +1690,9 @@ static void si_llvm_emit_clipvertex(struct lp_build_tgsi_context *bld_base,
 	unsigned chan;
 	unsigned const_chan;
 	LLVMValueRef base_elt;
-	LLVMValueRef ptr = LLVMGetParam(ctx->radeon_bld.main_fn, SI_PARAM_CONST_BUFFERS);
-	LLVMValueRef constbuf_index = lp_build_const_int32(base->gallivm, SI_DRIVER_STATE_CONST_BUF);
+	LLVMValueRef ptr = LLVMGetParam(ctx->radeon_bld.main_fn, SI_PARAM_RW_BUFFERS);
+	LLVMValueRef constbuf_index = lp_build_const_int32(base->gallivm,
+							   SI_VS_CONST_CLIP_PLANES);
 	LLVMValueRef const_resource = build_indexed_load_const(ctx, ptr, constbuf_index);
 
 	for (reg_index = 0; reg_index < 2; reg_index ++) {
diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index e726196d07..74af14c217 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -771,7 +771,8 @@ static void si_set_clip_state(struct pipe_context *ctx,
 	cb.user_buffer = state->ucp;
 	cb.buffer_offset = 0;
 	cb.buffer_size = 4*4*8;
-	ctx->set_constant_buffer(ctx, PIPE_SHADER_VERTEX, SI_DRIVER_STATE_CONST_BUF, &cb);
+	si_set_constant_buffer(sctx, &sctx->rw_buffers,
+			       SI_VS_CONST_CLIP_PLANES, &cb);
 	pipe_resource_reference(&cb.buffer, NULL);
 }
 
diff --git a/src/gallium/drivers/radeonsi/si_state.h b/src/gallium/drivers/radeonsi/si_state.h
index 9a2a7fd213..b7b00f00ec 100644
--- a/src/gallium/drivers/radeonsi/si_state.h
+++ b/src/gallium/drivers/radeonsi/si_state.h
@@ -178,6 +178,7 @@ enum {
 	SI_VS_STREAMOUT_BUF2,
 	SI_VS_STREAMOUT_BUF3,
 
+	SI_VS_CONST_CLIP_PLANES,
 	SI_PS_CONST_POLY_STIPPLE,
 
 	SI_NUM_RW_BUFFERS,
@@ -273,6 +274,9 @@ void si_update_compressed_colortex_masks(struct si_context *sctx);
 void si_emit_graphics_shader_userdata(struct si_context *sctx,
                                       struct r600_atom *atom);
 void si_emit_compute_shader_userdata(struct si_context *sctx);
+void si_set_constant_buffer(struct si_context *sctx,
+			    struct si_buffer_resources *buffers,
+			    uint slot, struct pipe_constant_buffer *input);
 
 /* si_state.c */
 struct si_shader_selector;