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#pragma once
#include "core/memory.h"
#include "texture.h"
#include <vector>
namespace Donut
{
enum class FramebufferTextureFormat
{
None = 0,
RGBA8,
RED_INTEGER,
DEPTH24STENCIL8,
Depth = DEPTH24STENCIL8
};
struct FramebufferTextureSpecification
{
FramebufferTextureSpecification() = default;
FramebufferTextureSpecification(FramebufferTextureFormat format)
: texture_format(format) {}
FramebufferTextureFormat texture_format = FramebufferTextureFormat::None;
};
struct FramebufferAttachmentSpecification
{
FramebufferAttachmentSpecification() = default;
FramebufferAttachmentSpecification(std::initializer_list<FramebufferTextureSpecification> attachments)
: attachments(attachments) {}
std::vector<FramebufferTextureSpecification> attachments;
};
struct FramebufferSpecification
{
uint32_t Width = 0, Height = 0;
FramebufferAttachmentSpecification attachments;
uint32_t Samples = 1;
bool SwapChainTarget = false;
};
class Framebuffer
{
public:
Framebuffer(const FramebufferSpecification& spec);
~Framebuffer();
auto bind() -> void;
auto unbind() -> void;
auto resize(uint32_t width, uint32_t height) -> void;
auto read_pixel(uint32_t attachment_index, int x, int y) -> int;
auto clear_attachment(uint32_t attachment_index, int value) -> void;
auto get_color_attachment_renderer_id(uint32_t index = 0) const -> uint32_t { return m_color_attachments[index]; }
auto get_specification() const -> const FramebufferSpecification& { return m_specification; }
static auto create(const FramebufferSpecification& spec) -> Ref<Framebuffer>;
private:
auto invalidate() -> void;
uint32_t m_renderer_id = 0;
FramebufferSpecification m_specification;
std::vector<FramebufferTextureSpecification> m_color_attachment_specifications;
FramebufferTextureSpecification m_depth_attachment_specification = FramebufferTextureFormat::None;
std::vector<uint32_t> m_color_attachments;
uint32_t m_depth_attachment = 0;
};
};
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