💿🐜 Antkeeper source code
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
137 lines
3.8 KiB
137 lines
3.8 KiB
/*
|
|
* Copyright (C) 2020 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_RASTERIZER_HPP
|
|
#define ANTKEEPER_RASTERIZER_HPP
|
|
|
|
#include <cstdlib>
|
|
|
|
class framebuffer;
|
|
class vertex_array;
|
|
class shader_program;
|
|
enum class drawing_mode;
|
|
enum class element_array_type;
|
|
|
|
/**
|
|
* Interface to the OpenGL state and drawing functions.
|
|
*/
|
|
class rasterizer
|
|
{
|
|
public:
|
|
/**
|
|
* Creates a rasterizer. Warning: This must be called after an OpenGL context has been created.
|
|
*/
|
|
rasterizer();
|
|
|
|
/// Destroys a rasterizer.
|
|
~rasterizer();
|
|
|
|
/**
|
|
* This should be called when the window associated with the OpenGL context is resized, and will effectively changed the reported dimensions of the default framebuffer.
|
|
*/
|
|
void context_resized(int width, int height);
|
|
|
|
/**
|
|
* Sets the active framebuffer.
|
|
*
|
|
* @param framebuffer Framebuffer to use.
|
|
*/
|
|
void use_framebuffer(const ::framebuffer& framebuffer);
|
|
|
|
/**
|
|
* Sets the color to be used when the color buffer of a framebuffer is cleared.
|
|
*
|
|
* @param r Red color component.
|
|
* @param g Green color component.
|
|
* @param b Blue color component.
|
|
* @param a Alpha color component.
|
|
*/
|
|
void set_clear_color(float r, float g, float b, float a);
|
|
|
|
/**
|
|
* Sets the depth value to be used when the depth buffer of a framebuffer is cleared.
|
|
*
|
|
* @param depth Depth value.
|
|
*/
|
|
void set_clear_depth(float depth);
|
|
|
|
/**
|
|
* Sets the stencil value to be used when the stencil buffer of a framebuffer is cleared.
|
|
*
|
|
* @param s Stencil value.
|
|
*/
|
|
void set_clear_stencil(int s);
|
|
|
|
/**
|
|
* Clears the buffers attached to a framebuffer.
|
|
*
|
|
* @param color Specifies whether the color buffer should be cleared.
|
|
* @param depth Specifies whether the depth buffer should be cleared.
|
|
* @param stencil Specifies whether the stencil buffer should be cleared.
|
|
*/
|
|
void clear_framebuffer(bool color, bool depth, bool stencil);
|
|
|
|
/**
|
|
* Sets the active viewport.
|
|
*
|
|
* @param x X-coordinate of the viewport.
|
|
* @param y Y-coordinate of the viewport.
|
|
* @param width Width of the viewport.
|
|
* @param height Height of the viewport.
|
|
*/
|
|
void set_viewport(int x, int y, int width, int height);
|
|
|
|
/**
|
|
* Binds a shader program.
|
|
*
|
|
* @param program Shader program to bind.
|
|
*/
|
|
void use_program(const shader_program& program);
|
|
|
|
/**
|
|
*
|
|
*/
|
|
void draw_arrays(const vertex_array& vao, drawing_mode mode, std::size_t offset, std::size_t count);
|
|
|
|
void draw_arrays_instanced(const vertex_array& vao, drawing_mode mode, std::size_t offset, std::size_t count, std::size_t instance_count);
|
|
|
|
/**
|
|
*
|
|
*/
|
|
void draw_elements(const vertex_array& vao, drawing_mode mode, std::size_t offset, std::size_t count, element_array_type type);
|
|
|
|
/**
|
|
* Returns the default framebuffer associated with the OpenGL context of a window.
|
|
*/
|
|
const framebuffer& get_default_framebuffer() const;
|
|
|
|
private:
|
|
framebuffer* default_framebuffer;
|
|
const framebuffer* bound_framebuffer;
|
|
const vertex_array* bound_vao;
|
|
const shader_program* bound_shader_program;
|
|
};
|
|
|
|
inline const framebuffer& rasterizer::get_default_framebuffer() const
|
|
{
|
|
return *default_framebuffer;
|
|
}
|
|
|
|
#endif // ANTKEEPER_RASTERIZER_HPP
|
|
|