update

[l4.git] / l4 / pkg / mag-gfx / include / mem_texture

diff --git a/l4/pkg/mag-gfx/include/mem_texture b/l4/pkg/mag-gfx/include/mem_texture
index bbd572ecad91d62bd1838254a2b9f0da0497269d..b8588eed74936acb717bcd4436edef23adee63c3 100644 (file)
--- a/l4/pkg/mag-gfx/include/mem_texture
+++ b/l4/pkg/mag-gfx/include/mem_texture
@@ -118,6 +118,54 @@ public:
          }
       }
   }
+
+  void blit_line(void const *_src, Pixel_info const *st, int line, unsigned *offset_buffer)
+  {
+    Pixel *dst = pixels();
+
+    if (line >= size().h())
+      return;
+
+    dst += size().w() * line;
+
+    char const *src = (char const *)_src;
+
+    if (st == type())
+      {
+       for (int i = 0; i < size().w(); ++i, ++dst)
+         *dst = *(Pixel const *)(src + offset_buffer[i]);
+
+       if (extra_alpha())
+         memset(alpha_buffer() + size().w() * line, ~0, size().w());
+      }
+    else
+      {
+#if 0
+       printf("texture convert: %dx%d %d(%d):%d(%d):%d(%d):%d(%d) -> %dx%d %d(%d):%d(%d):%d(%d):%d(%d)\n",
+           (int)o->size().w(), (int)o->size().h(),
+           (int)o->type()->r.si, (int)o->type()->r.sh,
+           (int)o->type()->g.si, (int)o->type()->g.sh,
+           (int)o->type()->b.si, (int)o->type()->b.sh,
+           (int)o->type()->a.si, (int)o->type()->a.sh,
+           (int)size().w(), (int)size().h(),
+           (int)type()->r.si, (int)type()->r.sh,
+           (int)type()->g.si, (int)type()->g.sh,
+           (int)type()->b.si, (int)type()->b.sh,
+           (int)type()->a.si, (int)type()->a.sh);
+#endif
+       unsigned char *ab = alpha_buffer();
+       bool const xa = ab;
+       ab += size().w() * line;
+
+       for (int y = 0; y < size().w(); y++)
+         {
+           Mag_gfx::Pixel_info::Color c = st->get(src + offset_buffer[y]);
+           dst[y] = Color(c);
+           if (xa)
+             ab[y] = c.a >> 8;
+         }
+      }
+  }
 };
 
 }}