From ea07a0df9a2f689b8f5acaf92c40bbbd602cab3c Mon Sep 17 00:00:00 2001 From: "Xiang, Haihao" Date: Fri, 14 Sep 2007 11:10:23 +0800 Subject: [PATCH] i965: align the address of the first element within the index buffer. (fix#11910) --- src/mesa/drivers/dri/i965/brw_draw_upload.c | 22 +++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/src/mesa/drivers/dri/i965/brw_draw_upload.c b/src/mesa/drivers/dri/i965/brw_draw_upload.c index 6150cac4aa3..dc289ca9ae7 100644 --- a/src/mesa/drivers/dri/i965/brw_draw_upload.c +++ b/src/mesa/drivers/dri/i965/brw_draw_upload.c @@ -593,6 +593,28 @@ void brw_upload_indices( struct brw_context *brw, ib_size, index_buffer->ptr, bufferobj); + } else { + if (((1 << get_index_type(index_buffer->type)) - 1) & offset) { + struct gl_buffer_object *vbo; + GLuint voffset; + GLubyte *map = ctx->Driver.MapBuffer(ctx, + GL_ELEMENT_ARRAY_BUFFER_ARB, + GL_DYNAMIC_DRAW_ARB, + bufferobj); + map += offset; + get_space(brw, ib_size, &vbo, &voffset); + + ctx->Driver.BufferSubData(ctx, + GL_ELEMENT_ARRAY_BUFFER_ARB, + voffset, + ib_size, + map, + vbo); + ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobj); + + bufferobj = vbo; + offset = voffset; + } } /* Emit the indexbuffer packet: -- 2.30.2