nv50: draw_elements() - inline only for the moment

1 files changed, 95 insertions, 1 deletions

diff --git a/src/gallium/drivers/nv50/nv50_vbo.c b/src/gallium/drivers/nv50/nv50_vbo.c
index 74519489f7..586a6c49de 100644
--- a/src/gallium/drivers/nv50/nv50_vbo.c
+++ b/src/gallium/drivers/nv50/nv50_vbo.c
@@ -52,16 +52,110 @@ nv50_draw_arrays(struct pipe_context *pipe, unsigned mode, unsigned start,
 	return TRUE;
 }
 
+static INLINE void
+nv50_draw_elements_inline_u08(struct nv50_context *nv50, uint8_t *map,
+			      unsigned start, unsigned count)
+{
+	map += start;
+
+	if (count & 1) {
+		BEGIN_RING(tesla, 0x15e8, 1);
+		OUT_RING  (map[0]);
+		map++;
+		count--;
+	}
+
+	while (count) {
+		unsigned nr = count > 2046 ? 2046 : count;
+		int i;
+
+		BEGIN_RING(tesla, 0x400015f0, nr >> 1);
+		for (i = 0; i < nr; i += 2)
+			OUT_RING  ((map[1] << 16) | map[0]);
+
+		count -= nr;
+		map += nr;
+	}
+}
+
+static INLINE void
+nv50_draw_elements_inline_u16(struct nv50_context *nv50, uint16_t *map,
+			      unsigned start, unsigned count)
+{
+	map += start;
+
+	if (count & 1) {
+		BEGIN_RING(tesla, 0x15e8, 1);
+		OUT_RING  (map[0]);
+		map++;
+		count--;
+	}
+
+	while (count) {
+		unsigned nr = count > 2046 ? 2046 : count;
+		int i;
+
+		BEGIN_RING(tesla, 0x400015f0, nr >> 1);
+		for (i = 0; i < nr; i += 2)
+			OUT_RING  ((map[1] << 16) | map[0]);
+
+		count -= nr;
+		map += nr;
+	}
+}
+
+static INLINE void
+nv50_draw_elements_inline_u32(struct nv50_context *nv50, uint8_t *map,
+			      unsigned start, unsigned count)
+{
+	map += start;
+
+	while (count) {
+		unsigned nr = count > 2047 ? 2047 : count;
+
+		BEGIN_RING(tesla, 0x400015e8, nr);
+		OUT_RINGp (map, nr);
+
+		count -= nr;
+		map += nr;
+	}
+}
+
 boolean
 nv50_draw_elements(struct pipe_context *pipe,
 		   struct pipe_buffer *indexBuffer, unsigned indexSize,
 		   unsigned mode, unsigned start, unsigned count)
 {
 	struct nv50_context *nv50 = nv50_context(pipe);
+	struct pipe_winsys *ws = pipe->winsys;
+	void *map = ws->buffer_map(ws, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
 
 	nv50_state_validate(nv50);
 
-	NOUVEAU_ERR("unimplemented\n");
+	BEGIN_RING(tesla, 0x142c, 1);
+	OUT_RING  (0);
+	BEGIN_RING(tesla, 0x142c, 1);
+	OUT_RING  (0);
+
+	BEGIN_RING(tesla, NV50TCL_VERTEX_BEGIN, 1);
+	OUT_RING  (nv50_prim(mode));
+	switch (indexSize) {
+	case 1:
+		nv50_draw_elements_inline_u08(nv50, map, start, count);
+		break;
+	case 2:
+		nv50_draw_elements_inline_u16(nv50, map, start, count);
+		break;
+	case 4:
+		nv50_draw_elements_inline_u32(nv50, map, start, count);
+		break;
+	default:
+		assert(0);
+	}
+	BEGIN_RING(tesla, NV50TCL_VERTEX_END, 1);
+	OUT_RING  (0);
+
+	pipe->flush(pipe, 0, NULL);
 	return TRUE;
 }