From ddc348d83eff8c12ff0e6c245c32fa65120e7f4a Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Mon, 26 Sep 2011 16:14:40 -0700 Subject: i965: Make sure to upload the data for a collection of Stride == 0 arrays. Commit d631c19db47181129811080bfa772b210d762d4d avoided this problem by forcing the driver to get the min/max index, but that commit was broken, so just fix the driver problem (confusion between "do I need to upload any data?" and "do I need the index bounds in order to upload any data?"). --- src/mesa/drivers/dri/i965/brw_draw_upload.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) (limited to 'src/mesa/drivers') diff --git a/src/mesa/drivers/dri/i965/brw_draw_upload.c b/src/mesa/drivers/dri/i965/brw_draw_upload.c index 7bc69c612e3..20325eba4fb 100644 --- a/src/mesa/drivers/dri/i965/brw_draw_upload.c +++ b/src/mesa/drivers/dri/i965/brw_draw_upload.c @@ -31,6 +31,7 @@ #include "main/bufferobj.h" #include "main/context.h" #include "main/enums.h" +#include "main/macros.h" #include "brw_draw.h" #include "brw_defines.h" @@ -251,6 +252,22 @@ copy_array_to_vbo_array(struct brw_context *brw, struct brw_vertex_buffer *buffer, GLuint dst_stride) { + if (min == -1) { + /* If we don't have computed min/max bounds, then this must be a use of + * the current attribute, which has a 0 stride. Otherwise, we wouldn't + * know what data to upload. + */ + assert(element->glarray->StrideB == 0); + + intel_upload_data(&brw->intel, element->glarray->Ptr, + element->element_size, + element->element_size, + &buffer->bo, &buffer->offset); + + buffer->stride = 0; + return; + } + int src_stride = element->glarray->StrideB; const unsigned char *src = element->glarray->Ptr + min * src_stride; int count = max - min + 1; @@ -442,7 +459,7 @@ static void brw_prepare_vertices(struct brw_context *brw) else if (total_size < 2048) { /* Upload non-interleaved arrays into a single interleaved array */ struct brw_vertex_buffer *buffer; - int count = max_index - min_index + 1; + int count = MAX2(max_index - min_index + 1, 1); int offset; char *map; -- cgit v1.2.3