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-rw-r--r--src/mesa/main/varray.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/src/mesa/main/varray.c b/src/mesa/main/varray.c
index 559ff9d949f..71ba518f2d1 100644
--- a/src/mesa/main/varray.c
+++ b/src/mesa/main/varray.c
@@ -627,14 +627,21 @@ _mesa_update_array_format(struct gl_context *ctx,
GLuint relativeOffset)
{
struct gl_array_attributes *const array = &vao->VertexAttrib[attrib];
+ struct gl_vertex_format new_format;
assert(!vao->SharedAndImmutable);
assert(size <= 4);
- array->RelativeOffset = relativeOffset;
- _mesa_set_vertex_format(&array->Format, size, type, format,
+ _mesa_set_vertex_format(&new_format, size, type, format,
normalized, integer, doubles);
+ if ((array->RelativeOffset == relativeOffset) &&
+ !memcmp(&new_format, &array->Format, sizeof(new_format)))
+ return;
+
+ array->RelativeOffset = relativeOffset;
+ array->Format = new_format;
+
vao->NewArrays |= vao->Enabled & VERT_BIT(attrib);
}
@@ -891,13 +898,11 @@ update_array(struct gl_context *ctx,
/* The Stride and Ptr fields are not set by update_array_format() */
struct gl_array_attributes *array = &vao->VertexAttrib[attrib];
- array->Stride = stride;
- /* For updating the pointer we would need to add the vao->NewArrays flag
- * to the VAO. But but that is done already unconditionally in
- * _mesa_update_array_format called above.
- */
- assert((vao->NewArrays | ~vao->Enabled) & VERT_BIT(attrib));
- array->Ptr = ptr;
+ if ((array->Stride != stride) || (array->Ptr != ptr)) {
+ array->Stride = stride;
+ array->Ptr = ptr;
+ vao->NewArrays |= vao->Enabled & VERT_BIT(attrib);
+ }
/* Update the vertex buffer binding */
GLsizei effectiveStride = stride != 0 ?