diff options
| -rw-r--r-- | src/mesa/state_tracker/st_draw.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/src/mesa/state_tracker/st_draw.c b/src/mesa/state_tracker/st_draw.c index cc3d7450a9f..e1bc108eae2 100644 --- a/src/mesa/state_tracker/st_draw.c +++ b/src/mesa/state_tracker/st_draw.c @@ -289,6 +289,7 @@ st_draw_vbo(GLcontext *ctx, for (attr = 0; attr < vp->num_inputs; attr++) { const GLuint mesaAttr = vp->index_to_input[attr]; struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; + GLsizei stride = arrays[mesaAttr]->StrideB; if (bufobj && bufobj->Name) { /* Attribute data is in a VBO. @@ -307,17 +308,27 @@ st_draw_vbo(GLcontext *ctx, /* attribute data is in user-space memory, not a VBO */ uint bytes; - if (!arrays[mesaAttr]->StrideB) { - bytes = arrays[mesaAttr]->Size - * _mesa_sizeof_type(arrays[mesaAttr]->Type); - } else { - bytes = arrays[mesaAttr]->StrideB * (max_index + 1); + /* wrap user data */ + if (arrays[mesaAttr]->Ptr) { + /* user's vertex array */ + if (arrays[mesaAttr]->StrideB) { + bytes = arrays[mesaAttr]->StrideB * (max_index + 1); + } + else { + bytes = arrays[mesaAttr]->Size + * _mesa_sizeof_type(arrays[mesaAttr]->Type); + } + vbuffer[attr].buffer = pipe_user_buffer_create(pipe, + (void *) arrays[mesaAttr]->Ptr, bytes); + } + else { + /* no array, use ctx->Current.Attrib[] value */ + bytes = sizeof(ctx->Current.Attrib[0]); + vbuffer[attr].buffer = pipe_user_buffer_create(pipe, + (void *) ctx->Current.Attrib[mesaAttr], bytes); + stride = 0; } - /* wrap user data */ - vbuffer[attr].buffer - = pipe_user_buffer_create(pipe, (void *) arrays[mesaAttr]->Ptr, - bytes); vbuffer[attr].buffer_offset = 0; velements[attr].src_offset = 0; } @@ -325,7 +336,7 @@ st_draw_vbo(GLcontext *ctx, assert(velements[attr].src_offset <= 2048); /* 11-bit field */ /* common-case setup */ - vbuffer[attr].pitch = arrays[mesaAttr]->StrideB; /* in bytes */ + vbuffer[attr].pitch = stride; /* in bytes */ vbuffer[attr].max_index = max_index; velements[attr].vertex_buffer_index = attr; velements[attr].nr_components = arrays[mesaAttr]->Size; |