From 9e6efdd1776cb76386d8aa774926c77aa2db7804 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 17 Jan 2018 15:15:54 -0700 Subject: [PATCH] vbo: fix VBO optimization regression The optimization in change 8e4efdc895ea ("vbo: optimize some display list drawing") missed the loopback case. This is used when the glBegin/End primitive doesn't have a uniform set of vertex attributes. The new Piglit gl-1.0-dlist-materials test hits this. So check the aligned_vertex_buffer_offset(list) value and adjust the buffer offset accordingly. We also need to remove the 'start == 0' assertion in the loopback code since it no longer applies. Reviewed-by: Roland Scheidegger --- src/mesa/vbo/vbo_save_draw.c | 5 ++++- src/mesa/vbo/vbo_save_loopback.c | 6 +++--- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/src/mesa/vbo/vbo_save_draw.c b/src/mesa/vbo/vbo_save_draw.c index f5c4a900b39..ddf911700f8 100644 --- a/src/mesa/vbo/vbo_save_draw.c +++ b/src/mesa/vbo/vbo_save_draw.c @@ -240,8 +240,11 @@ loopback_vertex_list(struct gl_context *ctx, list->vertex_store->bufferobj, MAP_INTERNAL); + unsigned buffer_offset = + aligned_vertex_buffer_offset(list) ? 0 : list->buffer_offset; + vbo_loopback_vertex_list(ctx, - (const GLfloat *)(buffer + list->buffer_offset), + (const GLfloat *) (buffer + buffer_offset), list->attrsz, list->prims, list->prim_count, diff --git a/src/mesa/vbo/vbo_save_loopback.c b/src/mesa/vbo/vbo_save_loopback.c index 1dae91b0b77..9c0e937fe40 100644 --- a/src/mesa/vbo/vbo_save_loopback.c +++ b/src/mesa/vbo/vbo_save_loopback.c @@ -107,17 +107,17 @@ loopback_prim(struct gl_context *ctx, GLuint k; if (0) - printf("loopback prim %s(%s,%s) verts %d..%d\n", + printf("loopback prim %s(%s,%s) verts %d..%d vsize %d\n", _mesa_lookup_prim_by_nr(prim->mode), prim->begin ? "begin" : "..", prim->end ? "end" : "..", - start, end); + start, end, + vertex_size); if (prim->begin) { CALL_Begin(GET_DISPATCH(), (prim->mode)); } else { - assert(start == 0); start += wrap_count; } -- 2.30.2