tests/cases/viewport.amber

#!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 GLSL
#version 430

layout(location = 0) in vec4 position;

void main() {
  gl_Position = vec4(position.xy, 0.5, 1.0);
}
END

SHADER fragment frag_shader GLSL
#version 430

layout(location = 0) out vec4 final_color;

void main() {
  final_color = vec4(0, 1, 0, 1);
}
END

BUFFER framebuffer FORMAT B8G8R8A8_UNORM

PIPELINE graphics pipeline1
  ATTACH vert_shader
  ATTACH frag_shader

  FRAMEBUFFER_SIZE 256 256
  VIEWPORT 10.0 10.0 SIZE 100.0 100.0

  BIND BUFFER framebuffer AS color LOCATION 0
END

CLEAR_COLOR pipeline1 255 255 255 255
CLEAR pipeline1
RUN pipeline1 DRAW_RECT POS 0 0 SIZE 256 256

# Check within the viewport
EXPECT framebuffer IDX 10 10 SIZE 100 100 EQ_RGBA   0 255   0 255
# Check the borders were untouched
EXPECT framebuffer IDX   0   0 SIZE  10 256 EQ_RGBA 255 255 255 255
EXPECT framebuffer IDX 110   0 SIZE 146 256 EQ_RGBA 255 255 255 255
EXPECT framebuffer IDX  10   0 SIZE 100  10 EQ_RGBA 255 255 255 255
EXPECT framebuffer IDX  10 110 SIZE 100 146 EQ_RGBA 255 255 255 255