1 files changed, 80 insertions, 0 deletions
diff --git a/src/mesa/tnl/tnl.h b/src/mesa/tnl/tnl.h
index e79c4f62048..45052a3a89c 100644
--- a/src/mesa/tnl/tnl.h
+++ b/src/mesa/tnl/tnl.h
@@ -108,4 +108,84 @@ _tnl_RasterPos(struct gl_context *ctx, const GLfloat vObj[4]);
 extern void
 _tnl_validate_shine_tables( struct gl_context *ctx );
 
+
+
+/**
+ * For indirect array drawing:
+ *
+ *    typedef struct {
+ *       GLuint count;
+ *       GLuint primCount;
+ *       GLuint first;
+ *       GLuint baseInstance; // in GL 4.2 and later, must be zero otherwise
+ *    } DrawArraysIndirectCommand;
+ *
+ * For indirect indexed drawing:
+ *
+ *    typedef struct {
+ *       GLuint count;
+ *       GLuint primCount;
+ *       GLuint firstIndex;
+ *       GLint  baseVertex;
+ *       GLuint baseInstance; // in GL 4.2 and later, must be zero otherwise
+ *    } DrawElementsIndirectCommand;
+ */
+
+
+/**
+ * Draw a number of primitives.
+ * \param prims  array [nr_prims] describing what to draw (prim type,
+ *               vertex count, first index, instance count, etc).
+ * \param arrays array of vertex arrays for draw
+ * \param ib  index buffer for indexed drawing, NULL for array drawing
+ * \param index_bounds_valid  are min_index and max_index valid?
+ * \param min_index  lowest vertex index used
+ * \param max_index  highest vertex index used
+ * \param tfb_vertcount  if non-null, indicates which transform feedback
+ *                       object has the vertex count.
+ * \param tfb_stream  If called via DrawTransformFeedbackStream, specifies the
+ *                    vertex stream buffer from which to get the vertex count.
+ * \param indirect  If any prims are indirect, this specifies the buffer
+ *                  to find the "DrawArrays/ElementsIndirectCommand" data.
+ *                  This may be deprecated in the future
+ */
+typedef void (*tnl_draw_func)(struct gl_context *ctx,
+                              const struct gl_vertex_array* arrays,
+                              const struct _mesa_prim *prims,
+                              GLuint nr_prims,
+                              const struct _mesa_index_buffer *ib,
+                              GLboolean index_bounds_valid,
+                              GLuint min_index,
+                              GLuint max_index,
+                              struct gl_transform_feedback_object *tfb_vertcount,
+                              unsigned tfb_stream,
+                              struct gl_buffer_object *indirect);
+
+
+/* Utility function to cope with various constraints on tnl modules or
+ * hardware.  This can be used to split an incoming set of arrays and
+ * primitives against the following constraints:
+ *    - Maximum number of indices in index buffer.
+ *    - Maximum number of vertices referenced by index buffer.
+ *    - Maximum hardware vertex buffer size.
+ */
+struct split_limits
+{
+   GLuint max_verts;
+   GLuint max_indices;
+   GLuint max_vb_size;		/* bytes */
+};
+
+void
+_tnl_split_prims(struct gl_context *ctx,
+                 const struct gl_vertex_array *arrays,
+                 const struct _mesa_prim *prim,
+                 GLuint nr_prims,
+                 const struct _mesa_index_buffer *ib,
+                 GLuint min_index,
+                 GLuint max_index,
+                 tnl_draw_func draw,
+                 const struct split_limits *limits);
+
+
 #endif