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// 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
//
// http://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 parseried.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "gtest/gtest.h"
#include "src/amberscript/parser.h"
namespace amber {
namespace amberscript {
using AmberScriptParserTest = testing::Test;
TEST_F(AmberScriptParserTest, BlendAllValues) {
std::string in = R"(
SHADER vertex my_shader PASSTHROUGH
SHADER fragment my_fragment GLSL
# GLSL Shader
END
BUFFER my_fb FORMAT R32G32B32A32_SFLOAT
PIPELINE graphics my_pipeline
ATTACH my_shader
ATTACH my_fragment
BIND BUFFER my_fb 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 zero
ALPHA_OP max
END
END)";
Parser parser;
Result r = parser.Parse(in);
ASSERT_TRUE(r.IsSuccess()) << r.Error();
auto script = parser.GetScript();
const auto& pipelines = script->GetPipelines();
ASSERT_EQ(1U, pipelines.size());
auto* pipeline = pipelines[0].get();
ASSERT_TRUE(pipeline->GetPipelineData()->GetEnableBlend());
ASSERT_EQ(BlendFactor::kSrcAlpha,
pipeline->GetPipelineData()->GetSrcColorBlendFactor());
ASSERT_EQ(BlendFactor::kOneMinusSrcAlpha,
pipeline->GetPipelineData()->GetDstColorBlendFactor());
ASSERT_EQ(BlendOp::kAdd,
pipeline->GetPipelineData()->GetColorBlendOp());
ASSERT_EQ(BlendFactor::kOne,
pipeline->GetPipelineData()->GetSrcAlphaBlendFactor());
ASSERT_EQ(BlendFactor::kZero,
pipeline->GetPipelineData()->GetDstAlphaBlendFactor());
ASSERT_EQ(BlendOp::kMax,
pipeline->GetPipelineData()->GetAlphaBlendOp());
}
TEST_F(AmberScriptParserTest, BlendDefaultValues) {
std::string in = R"(
SHADER vertex my_shader PASSTHROUGH
SHADER fragment my_fragment GLSL
# GLSL Shader
END
BUFFER my_fb FORMAT R32G32B32A32_SFLOAT
PIPELINE graphics my_pipeline
ATTACH my_shader
ATTACH my_fragment
BIND BUFFER my_fb AS color LOCATION 0
BLEND
END
END)";
Parser parser;
Result r = parser.Parse(in);
ASSERT_TRUE(r.IsSuccess()) << r.Error();
auto script = parser.GetScript();
const auto& pipelines = script->GetPipelines();
ASSERT_EQ(1U, pipelines.size());
auto* pipeline = pipelines[0].get();
ASSERT_TRUE(pipeline->GetPipelineData()->GetEnableBlend());
ASSERT_EQ(BlendFactor::kOne,
pipeline->GetPipelineData()->GetSrcColorBlendFactor());
ASSERT_EQ(BlendFactor::kZero,
pipeline->GetPipelineData()->GetDstColorBlendFactor());
ASSERT_EQ(BlendOp::kAdd,
pipeline->GetPipelineData()->GetColorBlendOp());
ASSERT_EQ(BlendFactor::kOne,
pipeline->GetPipelineData()->GetSrcAlphaBlendFactor());
ASSERT_EQ(BlendFactor::kZero,
pipeline->GetPipelineData()->GetDstAlphaBlendFactor());
ASSERT_EQ(BlendOp::kAdd,
pipeline->GetPipelineData()->GetAlphaBlendOp());
}
TEST_F(AmberScriptParserTest, BlendInvalidColorFactor) {
std::string in = R"(
SHADER vertex my_shader PASSTHROUGH
SHADER fragment my_fragment GLSL
# GLSL Shader
END
BUFFER my_fb FORMAT R32G32B32A32_SFLOAT
PIPELINE graphics my_pipeline
ATTACH my_shader
ATTACH my_fragment
BIND BUFFER my_fb AS color LOCATION 0
BLEND
SRC_COLOR_FACTOR foo
END
END)";
Parser parser;
Result r = parser.Parse(in);
ASSERT_FALSE(r.IsSuccess()) << r.Error();
EXPECT_EQ("14: BLEND invalid value for SRC_COLOR_FACTOR: foo", r.Error());
}
} // namespace amberscript
} // namespace amber
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