svga: define SVGA3D_MAX_DRAW_PRIMITIVE_RANGES and update comments

diff --git a/src/gallium/drivers/svga/include/svga3d_reg.h b/src/gallium/drivers/svga/include/svga3d_reg.h
index 77cb453..a527d7d 100644 (file)
--- a/src/gallium/drivers/svga/include/svga3d_reg.h
+++ b/src/gallium/drivers/svga/include/svga3d_reg.h
@@ -968,12 +968,18 @@ typedef enum {
 } SVGA3dTransferType;
 
 /*
- * The maximum number vertex arrays we're guaranteed to support in
+ * The maximum number of vertex arrays we're guaranteed to support in
  * SVGA_3D_CMD_DRAWPRIMITIVES.
  */
 #define SVGA3D_MAX_VERTEX_ARRAYS   32
 
 /*
+ * The maximum number of primitive ranges we're guaranteed to support
+ * in SVGA_3D_CMD_DRAWPRIMITIVES.
+ */
+#define SVGA3D_MAX_DRAW_PRIMITIVE_RANGES 32
+
+/*
  * Identifiers for commands in the command FIFO.
  *
  * IDs between 1000 and 1039 (inclusive) were used by obsolete versions of
@@ -1474,10 +1480,12 @@ struct {
     * SVGA3dCmdDrawPrimitives structure. In order,
     * they are:
     *
-    * 1. SVGA3dVertexDecl, quantity 'numVertexDecls'
-    * 2. SVGA3dPrimitiveRange, quantity 'numRanges'
+    * 1. SVGA3dVertexDecl, quantity 'numVertexDecls', but no more than
+    *    SVGA3D_MAX_VERTEX_ARRAYS;
+    * 2. SVGA3dPrimitiveRange, quantity 'numRanges', but no more than
+    *    SVGA3D_MAX_DRAW_PRIMITIVE_RANGES;
     * 3. Optionally, SVGA3dVertexDivisor, quantity 'numVertexDecls' (contains
-    *    the frequency divisor for this the corresponding vertex decl)
+    *    the frequency divisor for the corresponding vertex decl).
     */
 } SVGA3dCmdDrawPrimitives;      /* SVGA_3D_CMD_DRAWPRIMITIVES */