rename to projects (DOES NOT COMPILE)

projects/apis/metal/src/presentation_queue/metal_presentation_queue.m

@@ -0,0 +1,64 @@
+#include "metal_presentation_queue.h"
+#include "core/surface/metal_surface.h"
+#include "core/devices/metal_output_devices.h"
+#include "core/debugger/gryphn_debugger.h"
+#include "core/texture/metal_texture.h"
+#include "core/sync/semaphore/metal_semaphore.h"
+
+gnReturnCode gnCreatePresentationQueueFn(gnPresentationQueueHandle presentationQueue, const gnOutputDeviceHandle device, struct gnPresentationQueueInfo_t presentationInfo) {
+    if (presentationInfo.minImageCount > 3) {
+        gnDebuggerSetErrorMessage(device->instance->debugger, (gnMessageData){
+            .message = gnCreateString("On Metal you cannot have more than 3 images in a presentation queue")
+        });
+        return GN_UNSUPPORTED_IMAGE_COUNT;
+    }
+
+    if (presentationInfo.minImageCount < 2) {
+        gnDebuggerSetErrorMessage(device->instance->debugger, (gnMessageData){
+            .message = gnCreateString("On Metal you cannot have less than 2 images in a presentation queue")
+        });
+        return GN_UNSUPPORTED_IMAGE_COUNT;
+    }
+
+    presentationQueue->presentationQueue = malloc(sizeof(struct gnPlatformPresentationQueue_t));
+
+    MTLPixelFormat convertedFormat = mtlGryphnFormatToVulkanFormat(presentationInfo.format.format);
+    CGColorSpaceRef convertedColorSpace = mtlGryphnColorSpaceToVulkanColorSpace(presentationInfo.format.colorSpace);
+
+    presentationQueue->presentationQueue->textureCount = presentationInfo.minImageCount;
+    presentationQueue->presentationQueue->textures = malloc(sizeof(id<MTLTexture>) * presentationInfo.minImageCount);
+
+    MTLTextureDescriptor* textureDescriptor = [[MTLTextureDescriptor alloc] init];
+    textureDescriptor.pixelFormat = convertedFormat;
+    textureDescriptor.width = presentationInfo.imageSize.x;
+    textureDescriptor.height = presentationInfo.imageSize.y;
+    textureDescriptor.usage = MTLTextureUsageRenderTarget;
+    textureDescriptor.textureType  = MTLTextureType2D;
+
+    presentationQueue->imageCount = presentationInfo.minImageCount;
+    presentationQueue->images = malloc(sizeof(gnTexture) * presentationInfo.minImageCount);
+    for (int i = 0; i < presentationInfo.minImageCount; i++) {
+        presentationQueue->presentationQueue->textures[i] = [device->outputDevice->device newTextureWithDescriptor:textureDescriptor];
+        presentationQueue->images[i] = malloc(sizeof(struct gnTexture_t));
+        presentationQueue->images[i]->texture = malloc(sizeof(gnPlatformTexture));
+        presentationQueue->images[i]->texture->texture = presentationQueue->presentationQueue->textures[i];
+    }
+
+    return GN_SUCCESS;
+}
+
+gnReturnCode gnPresentationQueueGetImageFn(gnPresentationQueueHandle presentationQueue, uint64_t timeout, struct gnSemaphore_t* semaphore, uint32_t* imageIndex) {
+    semaphore->semaphore->eventTriggered = gnFalse;
+    *imageIndex = presentationQueue->presentationQueue->currentImage;
+    presentationQueue->presentationQueue->currentImage++;
+    presentationQueue->presentationQueue->currentImage %= presentationQueue->imageCount;
+    semaphore->semaphore->eventTriggered = gnTrue;
+    return GN_SUCCESS;
+}
+
+void gnDestroyPresentationQueueFn(gnPresentationQueueHandle presentationQueue) {
+    for (int i = 0; i < presentationQueue->imageCount; i++) {
+        [presentationQueue->presentationQueue->textures[i] release];
+    }
+    free(presentationQueue->presentationQueue);
+}