first commit

rendering_api/metal/src/core/framebuffers/metal_framebuffer.cpp

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+#include "metal_framebuffer.h"
+#include "core/graphics_pipeline/metal_graphics_pipeline.h"
+#include <core/devices/metal_output_devices.h>
+#include <core/textures/metal_texture.h>
+
+GN_EXPORT gnReturnCode gnCreateFramebufferAttachmentFn(gnFramebufferAttachment* attachment, gnPresentationQueue& queue) {
+    attachment->framebufferAttachment = new gnPlatformFramebufferAttachment();
+    // attachment->framebufferAttachment->framebufferAttachment = MTL::RenderPassAttachmentDescriptor::alloc()->init();
+    // MTL::RenderPassAttachmentDescriptor* descriptor = attachment->framebufferAttachment->framebufferAttachment;
+    // attachment->framebufferAttachment->framebufferAttachment->setTexture(attachment->texture->texture->texture->retain());
+    // descriptor->setLoadAction(MTL::LoadActionClear);
+    // descriptor->setStoreAction(MTL::StoreActionStore);
+    return GN_SUCCESS;
+}
+
+GN_EXPORT gnReturnCode gnCreateFramebufferFn(gnFramebuffer* framebuffer, const gnRenderPass& renderpass) {
+    framebuffer->framebuffer = new gnPlatformFramebuffer();
+    framebuffer->framebuffer->framebuffer = MTL::RenderPassDescriptor::alloc()->init();
+    framebuffer->framebuffer->framebuffer->setRenderTargetWidth(framebuffer->size.x);
+    framebuffer->framebuffer->framebuffer->setRenderTargetHeight(framebuffer->size.y);
+    framebuffer->framebuffer->framebuffer->setDepthAttachment(nullptr);
+    int currentColorAttachment = 0;
+    for (int i = 0; i < gnListLength(framebuffer->framebufferAttachments); i++) {
+        if (framebuffer->framebufferAttachments[i].bindPoint == GN_COLOR_ATTACHMENT) {
+            MTL::RenderPassColorAttachmentDescriptor* colorAttachment = framebuffer->framebuffer->framebuffer->colorAttachments()->object(currentColorAttachment)->retain();
+            colorAttachment->setTexture(framebuffer->framebufferAttachments[i].texture->texture->texture);
+            colorAttachment->setClearColor(MTL::ClearColor::Make(1.0f, 0.0f, 0.0f, 1.0f));
+            colorAttachment->setLoadAction(MTL::LoadActionClear);
+            colorAttachment->setStoreAction(MTL::StoreActionStore);
+            colorAttachment->release();
+            currentColorAttachment++;
+        } else if (framebuffer->framebufferAttachments[i].bindPoint == GN_DEPTH_STENCIL_ATTACHMENT) {
+            MTL::RenderPassDepthAttachmentDescriptor* depthAttachment = framebuffer->framebuffer->framebuffer->depthAttachment()->retain();
+            depthAttachment->setTexture(framebuffer->framebufferAttachments[i].texture->texture->texture);
+            depthAttachment->setLoadAction(MTL::LoadActionClear);
+            depthAttachment->setStoreAction(MTL::StoreActionStore);
+            depthAttachment->release();
+
+            MTL::RenderPassStencilAttachmentDescriptor* stencilAttachment = framebuffer->framebuffer->framebuffer->stencilAttachment()->retain();
+            stencilAttachment->setTexture(framebuffer->framebufferAttachments[i].texture->texture->texture);
+            stencilAttachment->setLoadAction(MTL::LoadActionClear);
+            stencilAttachment->setStoreAction(MTL::StoreActionStore);
+            stencilAttachment->release();
+        } else {
+            GN_RETURN_ERROR("fuck you (line 46 in metal_framebuffer.cpp)");
+        }
+    }
+    return GN_SUCCESS;
+}
+GN_EXPORT void gnDestroyFramebufferFn(const gnFramebuffer& framebuffer) {
+    framebuffer.framebuffer->framebuffer->release();
+}

rendering_api/metal/src/core/framebuffers/metal_framebuffer.h

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+#include <core/framebuffers/gryphn_framebuffer.h>
+#include <Metal/Metal.hpp>
+
+struct gnPlatformFramebuffer {
+    MTL::RenderPassDescriptor* framebuffer;
+};
+
+struct gnPlatformFramebufferAttachment {
+    MTL::RenderPassAttachmentDescriptor* framebufferAttachment;
+};