gallium: consolidate bypass_vs and bypass_clipping flags

The draw module provides a similar interface to the driver which
is retained as various bits of hardware may be able to take on
incremental parts of the vertex pipeline.  However, there's no
need to advertise all this complexity to the state tracker.

There are basically two modes now - normal and passthrough/screen-coords.

1 files changed, 9 insertions, 3 deletions

diff --git a/src/gallium/include/pipe/p_state.h b/src/gallium/include/pipe/p_state.h
index 57a7672d6c..aad41fab11 100644
--- a/src/gallium/include/pipe/p_state.h
+++ b/src/gallium/include/pipe/p_state.h
@@ -108,9 +108,15 @@ struct pipe_rasterizer_state
    unsigned line_stipple_factor:8;  /**< [1..256] actually */
    unsigned line_stipple_pattern:16;
    unsigned line_last_pixel:1;
-   unsigned bypass_clipping:1;
-   unsigned bypass_vs:1; /**< Skip the vertex shader.  Note that the shader is
-                            still needed though, to indicate inputs/outputs */
+
+   /** 
+    * Vertex coordinates are pre-transformed to screen space.  Skip
+    * the vertex shader, clipping and viewport processing.  Note that
+    * a vertex shader is still needed though, to indicate the mapping
+    * from vertex elements to fragment shader input semantics.
+    */
+   unsigned bypass_vs_clip_and_viewport:1;
+
    unsigned origin_lower_left:1;  /**< Is (0,0) the lower-left corner? */
    unsigned flatshade_first:1;   /**< take color attribute from the first vertex of a primitive */
    unsigned gl_rasterization_rules:1; /**< enable tweaks for GL rasterization?  */