r600g: add fetch shader capabilities

Use fetch shader instead of having fetch instruction in the vertex
shader. Allow to restrict shader update to a smaller part when
vertex buffer input layout changes.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/gallium/winsys/r600/drm/r600_hw_context.c b/src/gallium/winsys/r600/drm/r600_hw_context.c
index 71a531f535..de22891895 100644
--- a/src/gallium/winsys/r600/drm/r600_hw_context.c
+++ b/src/gallium/winsys/r600/drm/r600_hw_context.c
@@ -706,6 +706,12 @@ int r600_context_init(struct r600_context *ctx, struct radeon *radeon)
 		if (r)
 			goto out_err;
 	}
+	/* FS RESOURCE */
+	for (int j = 0, offset = 0x2300; j < 16; j++, offset += 0x1C) {
+		r = r600_state_resource_init(ctx, offset);
+		if (r)
+			goto out_err;
+	}
 
 	/* PS loop const */
 	r600_loop_const_init(ctx, 0);
@@ -893,6 +899,13 @@ void r600_context_pipe_state_set_vs_resource(struct r600_context *ctx, struct r6
 	r600_context_pipe_state_set_resource(ctx, state, offset);
 }
 
+void r600_context_pipe_state_set_fs_resource(struct r600_context *ctx, struct r600_pipe_state *state, unsigned rid)
+{
+	unsigned offset = R_038000_SQ_TEX_RESOURCE_WORD0_0 + 0x2300 + 0x1C * rid;
+
+	r600_context_pipe_state_set_resource(ctx, state, offset);
+}
+
 static inline void r600_context_pipe_state_set_sampler(struct r600_context *ctx, struct r600_pipe_state *state, unsigned offset)
 {
 	struct r600_range *range;