draw: add shader buffer interfaces.

[mesa.git] / src / gallium / auxiliary / draw / draw_context.c

diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c
index f8c69585e6aabe8ff7b3c5dc9f0caf7d38175e4f..74436f98016e689212050135e44aee92fa49cac5 100644 (file)
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -464,6 +464,32 @@ draw_set_mapped_constant_buffer(struct draw_context *draw,
    }
 }
 
+void
+draw_set_mapped_shader_buffer(struct draw_context *draw,
+                              enum pipe_shader_type shader_type,
+                              unsigned slot,
+                              const void *buffer,
+                              unsigned size )
+{
+   debug_assert(shader_type == PIPE_SHADER_VERTEX ||
+                shader_type == PIPE_SHADER_GEOMETRY);
+   debug_assert(slot < PIPE_MAX_SHADER_BUFFERS);
+
+   draw_do_flush(draw, DRAW_FLUSH_PARAMETER_CHANGE);
+
+   switch (shader_type) {
+   case PIPE_SHADER_VERTEX:
+      draw->pt.user.vs_ssbos[slot] = buffer;
+      draw->pt.user.vs_ssbos_size[slot] = size;
+      break;
+   case PIPE_SHADER_GEOMETRY:
+      draw->pt.user.gs_ssbos[slot] = buffer;
+      draw->pt.user.gs_ssbos_size[slot] = size;
+      break;
+   default:
+      assert(0 && "invalid shader type in draw_set_mapped_shader_buffer");
+   }
+}
 
 /**
  * Tells the draw module to draw points with triangles if their size