diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_state.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index bd08bf2d3fd..247c22216e1 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -1448,6 +1448,15 @@ static void r300_set_vertex_buffers(struct pipe_context* pipe, struct pipe_vertex_buffer *vbo; unsigned i, max_index = (1 << 24) - 1; boolean any_user_buffer = FALSE; + struct pipe_vertex_buffer dummy_vb = {0}; + + /* There must be at least one vertex buffer set, otherwise it locks up. */ + if (!count) { + dummy_vb.buffer = r300->dummy_vb; + dummy_vb.max_index = r300->dummy_vb->width0 / 4; + buffers = &dummy_vb; + count = 1; + } if (count == r300->vertex_buffer_count && memcmp(r300->vertex_buffer, buffers, @@ -1601,6 +1610,14 @@ static void* r300_create_vertex_elements_state(struct pipe_context* pipe, struct r300_vertex_element_state *velems; unsigned i; enum pipe_format *format; + struct pipe_vertex_element dummy_attrib = {0}; + + /* R300 Programmable Stream Control (PSC) doesn't support 0 vertex elements. */ + if (!count) { + dummy_attrib.src_format = PIPE_FORMAT_R8G8B8A8_UNORM; + attribs = &dummy_attrib; + count = 1; + } assert(count <= PIPE_MAX_ATTRIBS); velems = CALLOC_STRUCT(r300_vertex_element_state); @@ -1667,7 +1684,8 @@ static void* r300_create_vertex_elements_state(struct pipe_context* pipe, * swizzles are already set up. * Also compute the vertex size. */ for (i = 0; i < count; i++) { - /* This is OK because we check for aligned strides too. */ + /* This is OK because we check for aligned strides too + * elsewhere. */ velems->hw_format_size[i] = align(util_format_get_blocksize(velems->hw_format[i]), 4); velems->vertex_size_dwords += velems->hw_format_size[i] / 4; |