3 files changed, 5 insertions, 4 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index fc3e5c0d921..57bc7d3eb8a 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -1135,8 +1135,8 @@ static LLVMValueRef load_sample_position(struct radeon_llvm_context *radeon_bld,
 	struct lp_build_context *uint_bld = &radeon_bld->soa.bld_base.uint_bld;
 	struct gallivm_state *gallivm = &radeon_bld->gallivm;
 	LLVMBuilderRef builder = gallivm->builder;
-	LLVMValueRef desc = LLVMGetParam(ctx->radeon_bld.main_fn, SI_PARAM_CONST_BUFFERS);
-	LLVMValueRef buf_index = lp_build_const_int32(gallivm, SI_DRIVER_STATE_CONST_BUF);
+	LLVMValueRef desc = LLVMGetParam(ctx->radeon_bld.main_fn, SI_PARAM_RW_BUFFERS);
+	LLVMValueRef buf_index = lp_build_const_int32(gallivm, SI_PS_CONST_SAMPLE_POSITIONS);
 	LLVMValueRef resource = build_indexed_load_const(ctx, desc, buf_index);
 
 	/* offset = sample_id * 8  (8 = 2 floats containing samplepos.xy) */
diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 74af14c217b..2e488fe089e 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -2544,8 +2544,8 @@ static void si_set_framebuffer_state(struct pipe_context *ctx,
 			assert(0);
 		}
 		constbuf.buffer_size = sctx->framebuffer.nr_samples * 2 * 4;
-		ctx->set_constant_buffer(ctx, PIPE_SHADER_FRAGMENT,
-					 SI_DRIVER_STATE_CONST_BUF, &constbuf);
+		si_set_constant_buffer(sctx, &sctx->rw_buffers,
+				       SI_PS_CONST_SAMPLE_POSITIONS, &constbuf);
 
 		/* Smoothing (only possible with nr_samples == 1) uses the same
 		 * sample locations as the MSAA it simulates.
diff --git a/src/gallium/drivers/radeonsi/si_state.h b/src/gallium/drivers/radeonsi/si_state.h
index b7b00f00ecf..2b566bf25a0 100644
--- a/src/gallium/drivers/radeonsi/si_state.h
+++ b/src/gallium/drivers/radeonsi/si_state.h
@@ -180,6 +180,7 @@ enum {
 
 	SI_VS_CONST_CLIP_PLANES,
 	SI_PS_CONST_POLY_STIPPLE,
+	SI_PS_CONST_SAMPLE_POSITIONS,
 
 	SI_NUM_RW_BUFFERS,
 };