1 files changed, 46 insertions, 0 deletions
diff --git a/tests/cases/draw_rect_blend.amber b/tests/cases/draw_rect_blend.amber
new file mode 100644
index 0000000..c47b93f
--- /dev/null
+++ b/tests/cases/draw_rect_blend.amber
@@ -0,0 +1,46 @@
+#!amber
+# Copyright 2021 The Amber Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+SHADER vertex vert_shader PASSTHROUGH
+SHADER fragment frag_shader GLSL
+#version 430
+layout(location = 0) out vec4 color_out;
+void main()
+{
+  color_out = vec4(1.0, 0.0, 0.0, 0.5);
+}
+END
+
+BUFFER framebuffer FORMAT B8G8R8A8_UNORM
+
+PIPELINE graphics pipeline
+  ATTACH vert_shader
+  ATTACH frag_shader
+  BIND BUFFER framebuffer AS color LOCATION 0
+
+  BLEND
+    SRC_COLOR_FACTOR src_alpha
+    DST_COLOR_FACTOR one_minus_src_alpha
+    COLOR_OP add
+    SRC_ALPHA_FACTOR one
+    DST_ALPHA_FACTOR one
+    ALPHA_OP max
+  END
+END
+ 
+CLEAR_COLOR pipeline 0 255 0 255
+CLEAR pipeline
+RUN pipeline DRAW_RECT POS 0 0 SIZE 250 250
+EXPECT framebuffer IDX 0 0 SIZE 250 250 EQ_RGBA 128 128 0 255 TOLERANCE 5%