Mesa (master): r600g: fix draw-elements and draw-elements-base-vertex

[Dave Airlie]

Module: Mesa
Branch: master
Commit: cf0162be138cb424f47a8fa75e4645e2319c7ddf
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=cf0162be138cb424f47a8fa75e4645e2319c7ddf

Author: Dave Airlie <airlied at redhat.com>
Date:   Fri Sep 24 12:32:45 2010 +1000

r600g: fix draw-elements and draw-elements-base-vertex

---

 src/gallium/drivers/r600/r600_context.h   |    1 +
 src/gallium/drivers/r600/r600_draw.c      |   11 ++++++-----
 src/gallium/drivers/r600/r600_hw_states.c |    2 +-
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_context.h b/src/gallium/drivers/r600/r600_context.h
index 8778f23..c15e643 100644
--- a/src/gallium/drivers/r600/r600_context.h
+++ b/src/gallium/drivers/r600/r600_context.h
@@ -129,6 +129,7 @@ struct r600_draw {
 	struct pipe_resource	*index_buffer;
 	unsigned		index_buffer_offset;
 	unsigned		min_index, max_index;
+	unsigned		index_bias;
 };
 
 struct r600_context_hw_states {
diff --git a/src/gallium/drivers/r600/r600_draw.c b/src/gallium/drivers/r600/r600_draw.c
index 0fa48ae..4978a3c 100644
--- a/src/gallium/drivers/r600/r600_draw.c
+++ b/src/gallium/drivers/r600/r600_draw.c
@@ -149,8 +149,6 @@ void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
 	struct r600_draw draw;
 	int r;
 
-	assert(info->index_bias == 0);
-
 	memset(&draw, 0, sizeof(draw));
 
 	if (rctx->any_user_vbs) {
@@ -166,16 +164,17 @@ void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
 		draw.start += rctx->index_buffer.offset / rctx->index_buffer.index_size;
 		draw.min_index = info->min_index;
 		draw.max_index = info->max_index;
+		draw.index_bias = info->index_bias;
 
 		r600_translate_index_buffer(rctx, &rctx->index_buffer.buffer,
 					    &rctx->index_buffer.index_size,
-					    rctx->index_buffer.offset, &draw.start,
+					    0, &draw.start,
 					    info->count);
 
 		draw.index_size = rctx->index_buffer.index_size;
 		draw.index_buffer = rctx->index_buffer.buffer;
-		draw.index_buffer_offset = rctx->index_buffer.offset;
-
+		draw.index_buffer_offset = draw.start * draw.index_size;
+		draw.start = 0;
 		r600_upload_index_buffer(rctx, &draw);
 	}
 	else {
@@ -184,7 +183,9 @@ void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
 		draw.min_index = 0;
 		draw.max_index = 0xffffff;
 		draw.index_buffer_offset = 0;
+		draw.index_bias = draw.start;
 	}
+
 	r = r600_draw_common(&draw);
 	if (r)
 	  fprintf(stderr,"draw common failed %d\n", r);
diff --git a/src/gallium/drivers/r600/r600_hw_states.c b/src/gallium/drivers/r600/r600_hw_states.c
index 9e54c6a..1e9c5ff 100644
--- a/src/gallium/drivers/r600/r600_hw_states.c
+++ b/src/gallium/drivers/r600/r600_hw_states.c
@@ -983,7 +983,7 @@ static int r600_draw_vgt_prim(struct r600_draw *draw,
 	draw->vgt.states[R600_VGT__VGT_PRIMITIVE_TYPE] = prim;
 	draw->vgt.states[R600_VGT__VGT_MAX_VTX_INDX] = draw->max_index;
 	draw->vgt.states[R600_VGT__VGT_MIN_VTX_INDX] = draw->min_index;
-	draw->vgt.states[R600_VGT__VGT_INDX_OFFSET] = draw->start;
+	draw->vgt.states[R600_VGT__VGT_INDX_OFFSET] = draw->index_bias;
 	draw->vgt.states[R600_VGT__VGT_MULTI_PRIM_IB_RESET_INDX] = 0x00000000;
 	draw->vgt.states[R600_VGT__VGT_DMA_INDEX_TYPE] = vgt_dma_index_type;
 	draw->vgt.states[R600_VGT__VGT_PRIMITIVEID_EN] = 0x00000000;