105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
/*
|
|
* <Short Description>
|
|
* Copyright (C) 2023 Brett Terpstra
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef BLT_WITH_GRAPHICS_STATE_H
|
|
#define BLT_WITH_GRAPHICS_STATE_H
|
|
|
|
#include <blt/gfx/shader.h>
|
|
#include <blt/math/vectors.h>
|
|
#include <blt/math/matrix.h>
|
|
|
|
namespace blt::gfx
|
|
{
|
|
/**
|
|
* layout (std140) uniform GlobalMatrices
|
|
* {
|
|
* mat4 perspective; // full 3d perspective matrix
|
|
* mat4 ortho; // full 2d orthographic matrix
|
|
* mat4 view; // view matrix
|
|
* mat4 pvm; // perspective view matrix
|
|
* mat4 ovm; // ortho view matrix
|
|
* };
|
|
*/
|
|
class matrix_state_manager
|
|
{
|
|
private:
|
|
blt::mat4x4 perspective;
|
|
blt::mat4x4 ortho;
|
|
blt::mat4x4 view;
|
|
blt::mat4x4 pvm;
|
|
blt::mat4x4 ovm;
|
|
blt::mat4x4 view_2d;
|
|
blt::vec3 scale_2d;
|
|
std::int32_t last_width = 0, last_height = 0;
|
|
uniform_buffer* global_matrix_ubo = nullptr;
|
|
public:
|
|
[[nodiscard]] inline const blt::mat4x4& computedPVM() const
|
|
{
|
|
return pvm;
|
|
}
|
|
|
|
[[nodiscard]] inline const blt::mat4x4& computedOVM() const
|
|
{
|
|
return ovm;
|
|
}
|
|
|
|
void create_internals()
|
|
{
|
|
global_matrix_ubo = new uniform_buffer(sizeof(blt::mat4x4) * 5);
|
|
}
|
|
|
|
void cleanup()
|
|
{
|
|
delete global_matrix_ubo;
|
|
}
|
|
|
|
template<typename U>
|
|
void setView(U&& mat)
|
|
{
|
|
view = (mat);
|
|
}
|
|
|
|
template<typename U, typename G>
|
|
void setView2D(U&& mat, G&& scale)
|
|
{
|
|
view_2d = (mat);
|
|
scale_2d = (scale);
|
|
}
|
|
|
|
template<typename U>
|
|
void setPerspective(U&& mat)
|
|
{
|
|
perspective = (mat);
|
|
}
|
|
|
|
template<typename U>
|
|
void setOrtho(U&& mat)
|
|
{
|
|
ortho = (mat);
|
|
}
|
|
|
|
void update_perspectives(std::int32_t width, std::int32_t height, float fov = 90, float near = 0.1f, float far = 500.0f,
|
|
float ortho_near = 0, float ortho_far = 1.1);
|
|
|
|
void update();
|
|
};
|
|
|
|
}
|
|
|
|
#endif //BLT_WITH_GRAPHICS_STATE_H
|