102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/**
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This file is a part of our_dick
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Copyright (C) 2020 rexy712
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OUR_DICK_GRAPHICS_OGL_VAO_HPP
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#define OUR_DICK_GRAPHICS_OGL_VAO_HPP
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#include "gl_include.hpp"
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#include "math/math.hpp"
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#include "vbo.hpp"
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namespace gfx::ogl{
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using namespace math;
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class vertex_attribute;
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//class representing a vertex array object
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class vao
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{
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private:
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GLuint m_buffer; //handle to the vertex array
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public:
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//create a default initialized opengl vao
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vao();
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vao(const vao&) = delete;
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vao(vao&&);
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~vao();
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vao& operator=(const vao&) = delete;
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vao& operator=(vao&&);
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GLuint raw()const;
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//Set the instanced divisor of this binding point. Used with instanced rendering.
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void set_instance_divisor(GLuint binding, GLuint divisor);
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void bind_buffer(const vbo& buffer, GLuint bind_point, GLuint offset, GLuint stride);
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void bind_element_buffer(const vbo& buffer);
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//Get access to a generic vertex attribute within this vao
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vertex_attribute get_attribute(int index);
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//bind this vao for use with rendering program
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void bind();
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//unbind this vao and rebind state machine to 0
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void unbind();
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};
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//class representing a generic vertex attribute in a vao
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class vertex_attribute
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{
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private:
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GLuint m_vao; //handle to vertex array object
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int m_index; //index of this attribute
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public:
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constexpr vertex_attribute(GLuint vao, int index):
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m_vao(vao),
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m_index(index){}
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constexpr vertex_attribute(const vertex_attribute&) = default;
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constexpr vertex_attribute(vertex_attribute&&) = default;
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~vertex_attribute() = default;
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constexpr vertex_attribute& operator=(const vertex_attribute&) = default;
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constexpr vertex_attribute& operator=(vertex_attribute&&) = default;
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//enable use as an array attribute (most likely what is desired)
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void enable();
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//disable use as an array attribute. used for static data in attributes during rendering
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void disable();
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//Associate this attribute's location with the given buffer binding location
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void associate_with(GLuint buffer_binding);
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//setters for use in array mode. Same arguments as glVertexAttribPointer but these take arguments
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//as object counts rather than bytes. a valid vbo must be bound to buffers::array_buffer before these are called.
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void set_float_array(GLint size, GLsizei offset);
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void set_double_array(GLint size, GLsizei offset);
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void set_byte_array(GLint size, GLsizei offset);
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void set_ubyte_array(GLint size, GLsizei offset);
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void set_short_array(GLint size, GLsizei offset);
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void set_ushort_array(GLint size, GLsizei offset);
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void set_int_array(GLint size, GLsizei offset);
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void set_uint_array(GLint size, GLsizei offset);
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};
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}
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#endif
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