153 lines
5.4 KiB
C++
153 lines
5.4 KiB
C++
#pragma once
|
|
/*
|
|
* Copyright (C) 2024 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_FRAMEBUFFER_H
|
|
#define BLT_WITH_GRAPHICS_FRAMEBUFFER_H
|
|
|
|
#include "blt/gfx/gl_includes.h"
|
|
#include <blt/gfx/texture.h>
|
|
#include <vector>
|
|
#include "blt/std/types.h"
|
|
|
|
namespace blt::gfx
|
|
{
|
|
|
|
#define C(num) COLOR##num = GL_COLOR_ATTACHMENT##num,
|
|
|
|
#define COLOR_LIST \
|
|
C(0) C(1) C(2) C(3) C(4) C(5) C(6) C(7) C(8) C(9) C(10) C(11) C(12) C(13) C(14) C(15) C(16) \
|
|
C(17) C(18) C(19) C(20) C(21) C(22) C(23) C(24) C(25) C(26) C(27) C(28) C(29) C(30) C(31)
|
|
|
|
class fbo_t;
|
|
|
|
class rbo_t
|
|
{
|
|
friend fbo_t;
|
|
private:
|
|
GLuint rboID;
|
|
GLuint storage_type;
|
|
blt::i32 width_, height_;
|
|
blt::i32 samples = 0;
|
|
public:
|
|
rbo_t(): rboID(0), storage_type(0), width_(-1), height_(-1)
|
|
{}
|
|
|
|
void create();
|
|
|
|
void bind() const;
|
|
|
|
void setStorage(GLuint storage_type, blt::i32 width, blt::i32 height);
|
|
|
|
void setStorageMultiSampled(GLuint storage_type, blt::i32 width, blt::i32 height, blt::i32 samples);
|
|
|
|
void updateStorage(blt::i32 width, blt::i32 height);
|
|
|
|
void updateStorageMultiSampled(blt::i32 width, blt::i32 height, blt::i32 samples);
|
|
|
|
void resize(blt::i32 width, blt::i32 height);
|
|
|
|
static void unbind();
|
|
|
|
void destroy();
|
|
|
|
static rbo_t make_render_buffer(GLuint storage_type, blt::i32 width, blt::i32 height);
|
|
|
|
static rbo_t make_render_buffer(GLuint storage_type, blt::i32 width, blt::i32 height, blt::i32 samples);
|
|
};
|
|
|
|
class fbo_t
|
|
{
|
|
public:
|
|
enum class draw_t : GLuint
|
|
{
|
|
DRAW = GL_DRAW_FRAMEBUFFER,
|
|
READ = GL_READ_FRAMEBUFFER,
|
|
BOTH = GL_FRAMEBUFFER
|
|
};
|
|
enum class attachment_t : GLuint
|
|
{
|
|
COLOR_LIST
|
|
DEPTH_STENCIL = GL_DEPTH_STENCIL_ATTACHMENT,
|
|
DEPTH = GL_DEPTH_ATTACHMENT,
|
|
STENCIL = GL_STENCIL_ATTACHMENT
|
|
};
|
|
|
|
private:
|
|
GLuint fboID = 0;
|
|
GLuint generic_bind_type = GL_FRAMEBUFFER;
|
|
std::vector<blt::gfx::texture_gl*> texture_buffers;
|
|
std::vector<rbo_t> render_buffers;
|
|
blt::i32 width_ = -1, height_ = -1;
|
|
public:
|
|
// default used for fbo binding
|
|
void create(draw_t bind_type = draw_t::BOTH);
|
|
|
|
void bind(draw_t type = draw_t::BOTH) const;
|
|
|
|
// this function takes ownership of the pointer.
|
|
void attachTexture(blt::gfx::texture_gl* texture, attachment_t attachment, int level = 0);
|
|
|
|
void updateBuffersStorage(blt::i32 width, blt::i32 height);
|
|
|
|
// this function takes ownership of the render buffer
|
|
void attachRenderBuffer(rbo_t rbo, attachment_t attachment);
|
|
|
|
void blitTexture(const fbo_t& draw, blt::i32 srcX_off = 0, blt::i32 srcY_off = 0, blt::i32 destX_off = 0, blt::i32 destY_off = 0,
|
|
GLuint filter = GL_NEAREST, attachment_t attachment_read = attachment_t::COLOR0,
|
|
attachment_t attachment_write = attachment_t::COLOR0) const;
|
|
|
|
void blitToScreen(blt::i32 width, blt::i32 height) const;
|
|
|
|
void blitDepth(const fbo_t& draw, blt::i32 srcX_off = 0, blt::i32 srcY_off = 0, blt::i32 destX_off = 0, blt::i32 destY_off = 0,
|
|
GLuint filter = GL_NEAREST) const;
|
|
|
|
void blitStencil(const fbo_t& draw, blt::i32 srcX_off = 0, blt::i32 srcY_off = 0, blt::i32 destX_off = 0, blt::i32 destY_off = 0,
|
|
GLuint filter = GL_NEAREST) const;
|
|
|
|
static bool validate();
|
|
|
|
static void unbind();
|
|
|
|
void destroy();
|
|
|
|
[[nodiscard]] i32 getHeight() const
|
|
{
|
|
return height_;
|
|
}
|
|
|
|
[[nodiscard]] i32 getWidth() const
|
|
{
|
|
return width_;
|
|
}
|
|
|
|
public:
|
|
static fbo_t make_render_texture(blt::i32 width, blt::i32 height);
|
|
|
|
static fbo_t make_multisample_render_texture(blt::i32 width, blt::i32 height, blt::i32 samples);
|
|
|
|
static fbo_t make_render_target(blt::i32 width, blt::i32 height);
|
|
|
|
static fbo_t make_multisample_render_target(blt::i32 width, blt::i32 height, blt::i32 samples);
|
|
};
|
|
|
|
#undef C
|
|
#undef COLOR_LIST
|
|
}
|
|
|
|
#endif //BLT_WITH_GRAPHICS_FRAMEBUFFER_H
|