diff --git a/libretrogd/test-assets/test.blendmap b/libretrogd/test-assets/test.blendmap
new file mode 100644
index 0000000..a65c033
Binary files /dev/null and b/libretrogd/test-assets/test.blendmap differ
diff --git a/libretrogd/test-assets/texture.lbm b/libretrogd/test-assets/texture.lbm
new file mode 100644
index 0000000..2449e15
Binary files /dev/null and b/libretrogd/test-assets/texture.lbm differ
diff --git a/libretrogd/tests/ref/blended_filled_rect_drawing.pcx b/libretrogd/tests/ref/blended_filled_rect_drawing.pcx
new file mode 100644
index 0000000..25f2b95
Binary files /dev/null and b/libretrogd/tests/ref/blended_filled_rect_drawing.pcx differ
diff --git a/libretrogd/tests/ref/blended_horiz_line_drawing.pcx b/libretrogd/tests/ref/blended_horiz_line_drawing.pcx
new file mode 100644
index 0000000..a5a5934
Binary files /dev/null and b/libretrogd/tests/ref/blended_horiz_line_drawing.pcx differ
diff --git a/libretrogd/tests/ref/blended_line_drawing.pcx b/libretrogd/tests/ref/blended_line_drawing.pcx
new file mode 100644
index 0000000..7a5b085
Binary files /dev/null and b/libretrogd/tests/ref/blended_line_drawing.pcx differ
diff --git a/libretrogd/tests/ref/blended_pixel_drawing.pcx b/libretrogd/tests/ref/blended_pixel_drawing.pcx
new file mode 100644
index 0000000..6696eb0
Binary files /dev/null and b/libretrogd/tests/ref/blended_pixel_drawing.pcx differ
diff --git a/libretrogd/tests/ref/blended_rect_drawing.pcx b/libretrogd/tests/ref/blended_rect_drawing.pcx
new file mode 100644
index 0000000..fdee796
Binary files /dev/null and b/libretrogd/tests/ref/blended_rect_drawing.pcx differ
diff --git a/libretrogd/tests/ref/blended_rotozoom_blits.pcx b/libretrogd/tests/ref/blended_rotozoom_blits.pcx
new file mode 100644
index 0000000..79d6530
Binary files /dev/null and b/libretrogd/tests/ref/blended_rotozoom_blits.pcx differ
diff --git a/libretrogd/tests/ref/blended_rotozoom_transparent_blits.pcx b/libretrogd/tests/ref/blended_rotozoom_transparent_blits.pcx
new file mode 100644
index 0000000..673af85
Binary files /dev/null and b/libretrogd/tests/ref/blended_rotozoom_transparent_blits.pcx differ
diff --git a/libretrogd/tests/ref/blended_solid_blits.pcx b/libretrogd/tests/ref/blended_solid_blits.pcx
new file mode 100644
index 0000000..f67bd54
Binary files /dev/null and b/libretrogd/tests/ref/blended_solid_blits.pcx differ
diff --git a/libretrogd/tests/ref/blended_solid_flipped_blits.pcx b/libretrogd/tests/ref/blended_solid_flipped_blits.pcx
new file mode 100644
index 0000000..fd39cb8
Binary files /dev/null and b/libretrogd/tests/ref/blended_solid_flipped_blits.pcx differ
diff --git a/libretrogd/tests/ref/blended_transparent_blits.pcx b/libretrogd/tests/ref/blended_transparent_blits.pcx
new file mode 100644
index 0000000..9162f3f
Binary files /dev/null and b/libretrogd/tests/ref/blended_transparent_blits.pcx differ
diff --git a/libretrogd/tests/ref/blended_transparent_flipped_blits.pcx b/libretrogd/tests/ref/blended_transparent_flipped_blits.pcx
new file mode 100644
index 0000000..4e84bb6
Binary files /dev/null and b/libretrogd/tests/ref/blended_transparent_flipped_blits.pcx differ
diff --git a/libretrogd/tests/ref/blended_vert_line_drawing.pcx b/libretrogd/tests/ref/blended_vert_line_drawing.pcx
new file mode 100644
index 0000000..2e9d2c5
Binary files /dev/null and b/libretrogd/tests/ref/blended_vert_line_drawing.pcx differ