mesa: Implement a new GL_MESA_tile_raster_order extension.

The intent is to use this extension on vc4 to allow X11 to do overlapping
CopyArea() within a pixmap without first blitting the pixmap to a
temporary.  With associated glamor patches, improves x11perf
-copywinwin100 performance on a Raspberry Pi 3 from ~4700/sec to
~5130/sec, and is an even larger boost to uncomposited window movement
performance (most copywinwin100 copies don't overlap).

v2: Fix glIsEnabled() on the new enums.
v3: Drop the local spec since I'm upstreaming the spec.

Reviewed-by: Nicolai Hähnle <[email protected]>

1 files changed, 39 insertions, 0 deletions

diff --git a/src/mesa/main/enable.c b/src/mesa/main/enable.c
index 2e5fb009314..8e99f2504f1 100644
--- a/src/mesa/main/enable.c
+++ b/src/mesa/main/enable.c
@@ -1040,6 +1040,33 @@ _mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)
          }
          break;
 
+      case GL_TILE_RASTER_ORDER_FIXED_MESA:
+         CHECK_EXTENSION(MESA_tile_raster_order, cap);
+         if (ctx->TileRasterOrderFixed != state) {
+            FLUSH_VERTICES(ctx, 0);
+            ctx->NewDriverState |= ctx->DriverFlags.NewTileRasterOrder;
+            ctx->TileRasterOrderFixed = state;
+         }
+         break;
+
+      case GL_TILE_RASTER_ORDER_INCREASING_X_MESA:
+         CHECK_EXTENSION(MESA_tile_raster_order, cap);
+         if (ctx->TileRasterOrderIncreasingX != state) {
+            FLUSH_VERTICES(ctx, 0);
+            ctx->NewDriverState |= ctx->DriverFlags.NewTileRasterOrder;
+            ctx->TileRasterOrderIncreasingX = state;
+         }
+         break;
+
+      case GL_TILE_RASTER_ORDER_INCREASING_Y_MESA:
+         CHECK_EXTENSION(MESA_tile_raster_order, cap);
+         if (ctx->TileRasterOrderIncreasingY != state) {
+            FLUSH_VERTICES(ctx, 0);
+            ctx->NewDriverState |= ctx->DriverFlags.NewTileRasterOrder;
+            ctx->TileRasterOrderIncreasingY = state;
+         }
+         break;
+
       /* GL 3.1 primitive restart.  Note: this enum is different from
        * GL_PRIMITIVE_RESTART_NV (which is client state).
        */
@@ -1716,6 +1743,18 @@ _mesa_IsEnabled( GLenum cap )
          CHECK_EXTENSION(INTEL_conservative_rasterization);
          return ctx->IntelConservativeRasterization;
 
+      case GL_TILE_RASTER_ORDER_FIXED_MESA:
+         CHECK_EXTENSION(MESA_tile_raster_order);
+         return ctx->TileRasterOrderFixed;
+
+      case GL_TILE_RASTER_ORDER_INCREASING_X_MESA:
+         CHECK_EXTENSION(MESA_tile_raster_order);
+         return ctx->TileRasterOrderIncreasingX;
+
+      case GL_TILE_RASTER_ORDER_INCREASING_Y_MESA:
+         CHECK_EXTENSION(MESA_tile_raster_order);
+         return ctx->TileRasterOrderIncreasingY;
+
       default:
          goto invalid_enum_error;
    }