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- /*
- * Copyright (C) 2023 Christopher J. Howard
- *
- * This file is part of Antkeeper source code.
- *
- * Antkeeper source code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Antkeeper source code is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #ifndef ANTKEEPER_GL_PIPELINE_COLOR_BLEND_STATE_HPP
- #define ANTKEEPER_GL_PIPELINE_COLOR_BLEND_STATE_HPP
-
- #include <engine/gl/logic-op.hpp>
- #include <engine/gl/color-blend-equation.hpp>
- #include <array>
- #include <cstdlib>
-
- namespace gl {
-
- /// Pipeline color blend state.
- struct pipeline_color_blend_state
- {
- /// Controls whether to apply logical operations.
- bool logic_op_enabled{false};
-
- /// Selects which logical operation to apply.
- gl::logic_op logic_op{gl::logic_op::bitwise_copy};
-
- /// Controls whether blending is enabled for the corresponding color attachment.
- bool blend_enabled{false};
-
- /// Color blend factors and operations.
- gl::color_blend_equation color_blend_equation
- {
- blend_factor::one,
- blend_factor::zero,
- blend_op::add,
- blend_factor::one,
- blend_factor::zero,
- blend_op::add
- };
-
- /// Bitmask indicating which of the RGBA components are enabled for writing.
- std::uint8_t color_write_mask{0b1111};
-
- /// RGBA components of the blend constant that are used in blending, depending on the blend factor.
- std::array<float, 4> blend_constants{0.0f, 0.0f, 0.0f, 0.0f};
- };
-
- } // namespace gl
-
- #endif // ANTKEEPER_GL_PIPELINE_COLOR_BLEND_STATE_HPP
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