struct draw_pt_middle_end;
struct draw_context;
+
+#define PT_SHADE 0x1
+#define PT_CLIPTEST 0x2
+#define PT_PIPELINE 0x4
+#define PT_MAX_MIDDLE 0x8
+
+
/* The "front end" - prepare sets of fetch, draw elements for the
* middle end.
*
*/
struct draw_pt_front_end {
void (*prepare)( struct draw_pt_front_end *,
- struct draw_pt_middle_end * );
+ unsigned prim,
+ struct draw_pt_middle_end *,
+ unsigned opt );
void (*run)( struct draw_pt_front_end *,
- unsigned prim,
pt_elt_func elt_func,
const void *elt_ptr,
unsigned count );
* Currently two versions of this:
* - fetch, vertex shade, cliptest, prim-pipeline
* - fetch, emit (ie passthrough)
- * Later:
- * - fetch, vertex shade, cliptest, maybe-pipeline, maybe-emit
- * - fetch, vertex shade, emit
- *
- * Currenly only using the passthrough version.
*/
struct draw_pt_middle_end {
- void (*prepare)( struct draw_pt_middle_end * );
+ void (*prepare)( struct draw_pt_middle_end *,
+ unsigned prim,
+ unsigned opt,
+ unsigned *max_vertices );
void (*run)( struct draw_pt_middle_end *,
- unsigned prim,
const unsigned *fetch_elts,
unsigned fetch_count,
const ushort *draw_elts,
unsigned draw_count );
+ void (*run_linear)(struct draw_pt_middle_end *,
+ unsigned start,
+ unsigned count);
+
+ /* Transform all vertices in a linear range and then draw them with
+ * the supplied element list. May fail and return FALSE.
+ */
+ boolean (*run_linear_elts)( struct draw_pt_middle_end *,
+ unsigned fetch_start,
+ unsigned fetch_count,
+ const ushort *draw_elts,
+ unsigned draw_count );
+
+ int (*get_max_vertex_count)( struct draw_pt_middle_end * );
+
void (*finish)( struct draw_pt_middle_end * );
void (*destroy)( struct draw_pt_middle_end * );
};
/* The "back end" - supplied by the driver, defined in draw_vbuf.h.
- *
- * Not sure whether to wrap the prim pipeline up as an alternate
- * backend. Would be a win for everything except pure passthrough
- * mode...
*/
struct vbuf_render;
+struct vertex_header;
/* Helper functions.
const void *draw_pt_elt_ptr( struct draw_context *draw,
unsigned start );
-/* Implementations:
+/* Frontends:
+ *
+ * Currently only the general-purpose vcache implementation, could add
+ * a special case for tiny vertex buffers.
*/
struct draw_pt_front_end *draw_pt_vcache( struct draw_context *draw );
+struct draw_pt_front_end *draw_pt_varray(struct draw_context *draw);
+
+
+/* Middle-ends:
+ *
+ * Currently one general-purpose case which can do all possibilities,
+ * at the slight expense of creating a vertex_header in some cases
+ * unecessarily.
+ *
+ * The special case fetch_emit code avoids pipeline vertices
+ * altogether and builds hardware vertices directly from API
+ * vertex_elements.
+ */
struct draw_pt_middle_end *draw_pt_fetch_emit( struct draw_context *draw );
+struct draw_pt_middle_end *draw_pt_middle_fse( struct draw_context *draw );
+struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit(struct draw_context *draw);
+
+
+/* More helpers:
+ */
+boolean draw_pt_get_edgeflag( struct draw_context *draw,
+ unsigned idx );
+
+
+/*******************************************************************************
+ * HW vertex emit:
+ */
+struct pt_emit;
+void draw_pt_emit_prepare( struct pt_emit *emit,
+ unsigned prim,
+ unsigned *max_vertices );
+
+void draw_pt_emit( struct pt_emit *emit,
+ const float (*vertex_data)[4],
+ unsigned vertex_count,
+ unsigned stride,
+ const ushort *elts,
+ unsigned count );
+
+void draw_pt_emit_linear( struct pt_emit *emit,
+ const float (*vertex_data)[4],
+ unsigned stride,
+ unsigned count );
+
+void draw_pt_emit_destroy( struct pt_emit *emit );
+
+struct pt_emit *draw_pt_emit_create( struct draw_context *draw );
+
+
+/*******************************************************************************
+ * API vertex fetch:
+ */
+
+struct pt_fetch;
+void draw_pt_fetch_prepare( struct pt_fetch *fetch,
+ unsigned vertex_input_count,
+ unsigned vertex_size );
+
+void draw_pt_fetch_run( struct pt_fetch *fetch,
+ const unsigned *elts,
+ unsigned count,
+ char *verts );
+
+void draw_pt_fetch_run_linear( struct pt_fetch *fetch,
+ unsigned start,
+ unsigned count,
+ char *verts );
+
+void draw_pt_fetch_destroy( struct pt_fetch *fetch );
+
+struct pt_fetch *draw_pt_fetch_create( struct draw_context *draw );
+
+/*******************************************************************************
+ * Post-VS: cliptest, rhw, viewport
+ */
+struct pt_post_vs;
+
+boolean draw_pt_post_vs_run( struct pt_post_vs *pvs,
+ struct vertex_header *pipeline_verts,
+ unsigned stride,
+ unsigned count );
+
+void draw_pt_post_vs_prepare( struct pt_post_vs *pvs,
+ boolean bypass_clipping,
+ boolean bypass_viewport,
+ boolean opengl );
+
+struct pt_post_vs *draw_pt_post_vs_create( struct draw_context *draw );
+
+void draw_pt_post_vs_destroy( struct pt_post_vs *pvs );
+
+
+/*******************************************************************************
+ * Utils:
+ */
+void draw_pt_split_prim(unsigned prim, unsigned *first, unsigned *incr);
+unsigned draw_pt_reduced_prim(unsigned prim);
#endif
projects / mesa.git / blobdiff