[feat]: complete RHI api

1 files changed, 0 insertions, 251 deletions

diff --git a/src/rendering/framebuffer.cpp b/src/rendering/framebuffer.cpp
deleted file mode 100644
index 3da4b48..0000000
--- a/src/rendering/framebuffer.cpp
+++ /dev/null
@@ -1,251 +0,0 @@
-#include "framebuffer.h"
-#include "core/log.h"
-
-#include <glad/glad.h>
-
-namespace Donut
-{
-    namespace Utils
-    {
-        static GLenum TextureTarget(bool multisampled)
-        {
-            return multisampled ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D;
-        }
-
-        static void bind_texture(bool multisampled, uint32_t id)
-        {
-            glBindTexture(TextureTarget(multisampled), id);
-        }
-
-        static void CreateTextures(bool multisampled, uint32_t* out_id, uint32_t count)
-        {
-            // glCreateTextures is 4.5 DSA; macOS caps at 4.1. Callers bind each
-            // texture (with the correct target) before use.
-            glGenTextures(count, out_id);
-        }
-
-        static void AttachColorTexture(uint32_t id, int samples, GLenum internal_format, GLenum format, uint32_t width, uint32_t height, int index)
-        {
-            bool multisampled = samples > 1;
-            if (multisampled)
-            {
-                glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples, internal_format, width, height, GL_FALSE);
-            }
-            else
-            {
-                // Integer color formats require an integer pixel type even when
-                // data is null, or macOS's strict core profile rejects the call.
-                GLenum type = (format == GL_RED_INTEGER) ? GL_INT : GL_UNSIGNED_BYTE;
-                glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, format, type, nullptr);
-
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-            }
-
-            glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + index, TextureTarget(multisampled), id, 0);
-        }
-
-        static void AttachDepthTexture(uint32_t id, int samples, GLenum format, GLenum attachment_type, uint32_t width, uint32_t height)
-        {
-            bool multisampled = samples > 1;
-            if (multisampled)
-            {
-                glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples, format, width, height, GL_FALSE);
-            }
-            else
-            {
-                // glTexStorage2D is 4.2; use mutable storage for macOS (4.1).
-                GLenum depth_format = (format == GL_DEPTH24_STENCIL8) ? GL_DEPTH_STENCIL : GL_DEPTH_COMPONENT;
-                GLenum depth_type   = (format == GL_DEPTH24_STENCIL8) ? GL_UNSIGNED_INT_24_8 : GL_FLOAT;
-                glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, depth_format, depth_type, nullptr);
-
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-            }
-
-            glFramebufferTexture2D(GL_FRAMEBUFFER, attachment_type, TextureTarget(multisampled), id, 0);
-        }
-
-        static bool IsDepthFormat(FramebufferTextureFormat format)
-        {
-            switch (format)
-            {
-                case FramebufferTextureFormat::DEPTH24STENCIL8:  return true;
-            }
-            return false;
-        }
-
-        static GLenum DonutFBTextureFormatToGL(FramebufferTextureFormat format)
-        {
-            switch (format)
-            {
-                case FramebufferTextureFormat::RGBA8:       return GL_RGBA8;
-                case FramebufferTextureFormat::RED_INTEGER: return GL_RED_INTEGER;
-            }
-
-            return 0;
-        }
-    }
-
-    Framebuffer::Framebuffer(const FramebufferSpecification& spec)
-        : m_specification(spec)
-    {
-        for (auto spec : m_specification.attachments.attachments)
-        {
-            if (!Utils::IsDepthFormat(spec.texture_format))
-                m_color_attachment_specifications.emplace_back(spec);
-            else
-                m_depth_attachment_specification = spec;
-        }
-
-        invalidate();
-    }
-
-    Framebuffer::~Framebuffer()
-    {
-        glDeleteFramebuffers(1, &m_renderer_id);
-        glDeleteTextures(static_cast<GLsizei>(m_color_attachments.size()), m_color_attachments.data());
-        glDeleteTextures(1, &m_depth_attachment);
-    }
-
-    auto Framebuffer::invalidate() -> void
-    {
-        if (m_renderer_id)
-        {
-            glDeleteFramebuffers(1, &m_renderer_id);
-            glDeleteTextures(static_cast<GLsizei>(m_color_attachments.size()), m_color_attachments.data());
-            glDeleteTextures(1, &m_depth_attachment);
-
-            m_color_attachments.clear();
-            m_depth_attachment = 0;
-        }
-
-        glGenFramebuffers(1, &m_renderer_id); // glCreateFramebuffers is 4.5 DSA; unavailable on macOS 4.1
-        glBindFramebuffer(GL_FRAMEBUFFER, m_renderer_id);
-
-        bool multisample = m_specification.Samples > 1;
-
-        if (m_color_attachment_specifications.size())
-        {
-            m_color_attachments.resize(m_color_attachment_specifications.size());
-            Utils::CreateTextures(multisample, m_color_attachments.data(), static_cast<uint32_t>(m_color_attachments.size()));
-
-            for (size_t i = 0; i < m_color_attachments.size(); i++)
-            {
-                Utils::bind_texture(multisample, m_color_attachments[i]);
-                switch (m_color_attachment_specifications[i].texture_format)
-                {
-                    case FramebufferTextureFormat::RGBA8:
-                        Utils::AttachColorTexture(m_color_attachments[i], m_specification.Samples, GL_RGBA8, GL_RGBA, m_specification.Width, m_specification.Height, static_cast<int>(i));
-                        break;
-                    case FramebufferTextureFormat::RED_INTEGER:
-                        Utils::AttachColorTexture(m_color_attachments[i], m_specification.Samples, GL_R32I, GL_RED_INTEGER, m_specification.Width, m_specification.Height, static_cast<int>(i));
-                        break;
-                }
-            }
-        }
-
-        if (m_depth_attachment_specification.texture_format != FramebufferTextureFormat::None)
-        {
-            Utils::CreateTextures(multisample, &m_depth_attachment, 1);
-            Utils::bind_texture(multisample, m_depth_attachment);
-            switch (m_depth_attachment_specification.texture_format)
-            {
-                case FramebufferTextureFormat::DEPTH24STENCIL8:
-                    Utils::AttachDepthTexture(m_depth_attachment, m_specification.Samples, GL_DEPTH24_STENCIL8, GL_DEPTH_STENCIL_ATTACHMENT, m_specification.Width, m_specification.Height);
-                    break;
-            }
-        }
-
-        if (m_color_attachments.size() > 1)
-        {
-            GLenum buffers[4] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
-            glDrawBuffers(static_cast<GLsizei>(m_color_attachments.size()), buffers);
-        }
-        else if (m_color_attachments.empty())
-            glDrawBuffer(GL_NONE);
-
-        if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
-        {
-            GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
-            switch (status)
-            {
-                case GL_FRAMEBUFFER_UNDEFINED:
-                    DONUT_ERROR("Framebuffer is undefined");
-                    break;
-                case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
-                    DONUT_ERROR("Framebuffer has incomplete attachment");
-                    break;
-                case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
-                    DONUT_ERROR("Framebuffer is missing attachment");
-                    break;
-                case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
-                    DONUT_ERROR("Framebuffer has incomplete draw buffer");
-                    break;
-                case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
-                    DONUT_ERROR("Framebuffer has incomplete read buffer");
-                    break;
-                case GL_FRAMEBUFFER_UNSUPPORTED:
-                    DONUT_ERROR("Framebuffer format is unsupported");
-                    break;
-                case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
-                    DONUT_ERROR("Framebuffer has incomplete multisample");
-                    break;
-                case GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS:
-                    DONUT_ERROR("Framebuffer has incomplete layer targets");
-                    break;
-                default:
-                    DONUT_ERROR("Framebuffer is incomplete (unknown error: {})", status);
-                    break;
-            }
-        }
-
-        glBindFramebuffer(GL_FRAMEBUFFER, 0);
-    }
-
-    auto Framebuffer::bind() -> void
-    {
-        glBindFramebuffer(GL_FRAMEBUFFER, m_renderer_id);
-        glViewport(0, 0, m_specification.Width, m_specification.Height);
-    }
-
-    auto Framebuffer::unbind() -> void
-    {
-        glBindFramebuffer(GL_FRAMEBUFFER, 0);
-    }
-
-    auto Framebuffer::resize(uint32_t width, uint32_t height) -> void
-    {
-        m_specification.Width = width;
-        m_specification.Height = height;
-
-        invalidate();
-    }
-
-    auto Framebuffer::read_pixel(uint32_t attachment_index, int x, int y) -> int
-    {
-        glReadBuffer(GL_COLOR_ATTACHMENT0 + attachment_index);
-        int pixel_data;
-        glReadPixels(x, y, 1, 1, GL_RED_INTEGER, GL_INT, &pixel_data);
-        return pixel_data;
-    }
-
-    auto Framebuffer::clear_attachment(uint32_t attachment_index, int value) -> void
-    {
-        // glClearTexImage is 4.4 and unavailable on macOS. clear the integer
-        // attachment by binding this framebuffer and clearing its draw buffer.
-        glBindFramebuffer(GL_FRAMEBUFFER, m_renderer_id);
-        glClearBufferiv(GL_COLOR, static_cast<GLint>(attachment_index), &value);
-    }
-
-    auto Framebuffer::create(const FramebufferSpecification& spec) -> Ref<Framebuffer>
-    {
-        return create_ref<Framebuffer>(spec);
-    }
-};