diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/vbo/vbo_save_api.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/mesa/vbo/vbo_save_api.c b/src/mesa/vbo/vbo_save_api.c index 47ee355e725..9dd9c7d7d22 100644 --- a/src/mesa/vbo/vbo_save_api.c +++ b/src/mesa/vbo/vbo_save_api.c @@ -542,11 +542,18 @@ compile_vertex_list(struct gl_context *ctx) /* Duplicate our template, increment refcounts to the storage structs: */ + GLintptr old_offset = 0; + if (save->VAO[0]) { + old_offset = save->VAO[0]->BufferBinding[0].Offset + + save->VAO[0]->VertexAttrib[VERT_ATTRIB_POS].RelativeOffset; + } const GLsizei stride = save->vertex_size*sizeof(GLfloat); GLintptr buffer_offset = (save->buffer_map - save->vertex_store->buffer_map) * sizeof(GLfloat); + assert(old_offset <= buffer_offset); + const GLintptr offset_diff = buffer_offset - old_offset; GLuint start_offset = 0; - if (0 < buffer_offset && 0 < stride && buffer_offset % stride == 0) { + if (offset_diff > 0 && stride > 0 && offset_diff % stride == 0) { /* The vertex size is an exact multiple of the buffer offset. * This means that we can use zero-based vertex attribute pointers * and specify the start of the primitive with the _mesa_prim::start @@ -558,8 +565,9 @@ compile_vertex_list(struct gl_context *ctx) /* We cannot immediately update the primitives as some methods below * still need the uncorrected start vertices */ - start_offset = buffer_offset/stride; - buffer_offset = 0; + start_offset = offset_diff/stride; + assert(old_offset == buffer_offset - offset_diff); + buffer_offset = old_offset; } GLuint offsets[VBO_ATTRIB_MAX]; for (unsigned i = 0, offset = 0; i < VBO_ATTRIB_MAX; ++i) { @@ -666,6 +674,9 @@ compile_vertex_list(struct gl_context *ctx) */ free_vertex_store(ctx, save->vertex_store); save->vertex_store = NULL; + /* When we have a new vbo, we will for sure need a new vao */ + for (gl_vertex_processing_mode vpm = 0; vpm < VP_MODE_MAX; ++vpm) + _mesa_reference_vao(ctx, &save->VAO[vpm], NULL); /* Allocate and map new store: */ |