root: restructuring

Restructure the root of the project such that the engine is siloed from
the rest of the toolchain. Add two new subdirectories that contain an
editor and an offline profiling data analyzer.

Signed-off-by: Danny Holman <dholman@gymli.org>

1 files changed, 279 insertions, 0 deletions

diff --git a/engine/render/vulkan/renderer.c b/engine/render/vulkan/renderer.c
new file mode 100644
index 0000000..f02d84f
--- /dev/null
+++ b/engine/render/vulkan/renderer.c
@@ -0,0 +1,279 @@
+/*
+ * Rune Game Engine
+ * Copyright 2024 Danny Holman <dholman@gymli.org>
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#include "vk_types.h"
+#include "renderpass.h"
+#include "framebuffer.h"
+#include "swapchain.h"
+#include "device.h"
+#include "context.h"
+#include "image.h"
+#include "fence.h"
+#include "vkassert.h"
+#include <rune/render/renderer.h>
+#include <rune/core/logging.h>
+#include <rune/core/alloc.h>
+#include <rune/core/abort.h>
+#include <rune/core/config.h>
+#include <sys/time.h>
+
+static vkcontext_t *context = NULL;
+
+void _init_cmdbuffers(void) {
+        uint32_t num_buffers = context->swapchain->img_count;
+        if (context->cmdbuffers == NULL)
+                context->cmdbuffers = rune_calloc(0, sizeof(vkcmdbuffer_t*) * num_buffers);
+
+        for (uint32_t i = 0; i < num_buffers; i++) {
+                if (context->cmdbuffers[i] != NULL)
+                        destroy_vkcmdbuffer(context->cmdbuffers[i], context->dev);
+                context->cmdbuffers[i] = create_vkcmdbuffer(context->dev, 1);
+        }
+        log_output(LOG_DEBUG, "Created %d command buffers", num_buffers);
+}
+
+void _destroy_cmdbuffers(void) {
+        uint32_t num_buffers = context->swapchain->img_count;
+        if (context->cmdbuffers == NULL)
+                return;
+        for (uint32_t i = 0; i < num_buffers; i++) {
+                if (context->cmdbuffers[i] != NULL)
+                        destroy_vkcmdbuffer(context->cmdbuffers[i], context->dev);
+        }
+        log_output(LOG_DEBUG, "Destroyed %d command buffers", num_buffers);
+}
+
+void _init_framebuffers(void) {
+        uint32_t num_buffers = context->swapchain->img_count;
+        if (context->framebuffers == NULL)
+                context->framebuffers = rune_calloc(0, sizeof(vkframebuffer_t*) * num_buffers);
+
+        uint32_t at_count = 2;
+        for (uint32_t i = 0; i < num_buffers; i++) {
+                VkImageView attachments[at_count];
+                attachments[0] = context->swapchain->views[i];
+                attachments[1] = context->swapchain->depth_attachment->view;
+
+                if (context->framebuffers[i] != NULL)
+                        destroy_vkframebuffer(context->framebuffers[i], context->dev);
+                context->framebuffers[i] = create_vkframebuffer(context->dev,
+                                                                context->rendpass,
+                                                                context->surface->width,
+                                                                context->surface->height,
+                                                                at_count,
+                                                                attachments);
+        }
+        log_output(LOG_DEBUG, "Created %d frame buffers", num_buffers);
+}
+
+void _destroy_framebuffers(void) {
+        uint32_t num_buffers = context->swapchain->img_count;
+        if (context->framebuffers == NULL)
+                return;
+
+        for (uint32_t i = 0; i < num_buffers; i++)
+                destroy_vkframebuffer(context->framebuffers[i], context->dev);
+        log_output(LOG_DEBUG, "Destroyed %d frame buffers", num_buffers);
+}
+
+int _init_vulkan(window_t *window) {
+        log_output(LOG_DEBUG, "Initializing Vulkan");
+        struct timeval start;
+        struct timeval stop;
+        gettimeofday(&start, NULL);
+
+        ext_container_t ext;
+        ext.extensions = glfwGetRequiredInstanceExtensions(&ext.ext_count);
+        
+        if (rune_get_vk_debug() == 1) {
+                vklayer_container_t *vklayers = init_vklayers(&ext);
+                context = create_vkcontext(vklayers, &ext);
+        } else {
+                context = create_vkcontext(NULL, &ext);
+        }
+
+        if (context == NULL)
+                return -1;
+
+        VkResult res = glfwCreateWindowSurface(context->instance,
+                                               window->window,
+                                               NULL,
+                                               &context->surface->handle);
+        if (res != VK_SUCCESS) {
+                log_output(LOG_FATAL, "Cannot create rendering surface");
+                return -1;
+        }
+
+        context->dev = create_vkdev(context->instance,
+                                    context->surface->handle,
+                                    1,
+                                    1,
+                                    1,
+                                    1);
+        if (context->dev == NULL)
+                return -1;
+
+        context->surface->width = window->winw;
+        context->surface->height = window->winh;
+        context->swapchain = create_swapchain(context->surface, context->dev);
+        if (context->swapchain == NULL)
+                return -1;
+
+        vec4 area = {0, 0, context->surface->width, context->surface->height};
+        vec4 color = {0, 0, 0, 1.0f};
+        context->rendpass = create_vkrendpass(context->dev, context->swapchain, area, color, 1.0, 0);
+        if (context->rendpass == NULL)
+                return -1;
+
+        _init_framebuffers();
+        _init_cmdbuffers();
+
+        context->image_semaphores = rune_alloc(sizeof(VkSemaphore) * context->swapchain->max_frames);
+        context->queue_semaphores = rune_alloc(sizeof(VkSemaphore) * context->swapchain->max_frames);
+        context->fences_in_flight = rune_calloc(0, sizeof(vkfence_t*) * context->swapchain->max_frames);
+
+        VkSemaphoreCreateInfo scinfo;
+        for (uint8_t i = 0; i < context->swapchain->max_frames; i++) {
+                scinfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+                scinfo.pNext = NULL;
+                scinfo.flags = 0;
+                vkCreateSemaphore(context->dev->ldev, &scinfo, NULL, &context->image_semaphores[i]);
+                vkCreateSemaphore(context->dev->ldev, &scinfo, NULL, &context->queue_semaphores[i]);
+                context->fences_in_flight[i] = create_vkfence(context->dev, 1);
+        }
+        context->images_in_flight = rune_calloc(0, sizeof(vkfence_t*) * context->swapchain->img_count);
+
+        gettimeofday(&stop, NULL);
+        log_output(LOG_INFO, "Finished initializing Vulkan in %lums", (stop.tv_sec - start.tv_sec) * 1000000 + stop.tv_usec - start.tv_usec);
+        return 0;
+}
+
+void _close_vulkan(void) {
+        vkDeviceWaitIdle(context->dev->ldev);
+        for (uint8_t i = 0; i < context->swapchain->max_frames; i++) {
+                if (context->image_semaphores[i] != NULL)
+                        vkDestroySemaphore(context->dev->ldev, context->image_semaphores[i], NULL);
+                if (context->queue_semaphores[i] != NULL)
+                        vkDestroySemaphore(context->dev->ldev, context->queue_semaphores[i], NULL);
+                destroy_vkfence(context->fences_in_flight[i], context->dev);
+        }
+
+        _destroy_cmdbuffers();
+        _destroy_framebuffers();
+        destroy_vkrendpass(context->rendpass, context->dev);
+        destroy_swapchain(context->swapchain, context->dev);
+        destroy_vkdev(context->dev);
+        destroy_vkcontext(context);
+}
+
+int _begin_frame(float time) {
+        vkfence_t *frame_fence = context->fences_in_flight[context->swapchain->frame];
+        if (fence_lock(frame_fence, context->dev, UINT64_MAX) == -1) {
+                log_output(LOG_WARN, "Error locking in-flight fence");
+                return -1;
+        }
+        
+        uint32_t next_img = vkswapchain_get_next_img(context->swapchain,
+                                                     context->dev,
+                                                     UINT64_MAX,
+                                                     NULL,
+                                                     context->image_semaphores[context->swapchain->frame]);
+
+        if (next_img == -1)
+                return -1;
+
+        context->img_index = next_img;
+        vkcmdbuffer_t *cmdbuf = context->cmdbuffers[context->img_index];
+        cmdbuf_begin(cmdbuf, 0, 0, 0);
+
+        VkViewport vport;
+        vport.x = 0;
+        vport.y = (float)context->surface->height;
+        vport.width = (float)context->surface->width;
+        vport.height = (float)context->surface->height;
+        vport.minDepth = 0;
+        vport.maxDepth = 1;
+
+        VkRect2D scissor;
+        scissor.offset.x = 0;
+        scissor.offset.y = 0;
+        scissor.extent.width = context->surface->width;
+        scissor.extent.height = context->surface->height;
+
+        vkCmdSetViewport(cmdbuf->handle, 0, 1, &vport);
+        vkCmdSetScissor(cmdbuf->handle, 0, 1, &scissor);
+
+        context->rendpass->area[2] = context->surface->width;
+        context->rendpass->area[3] = context->surface->height;
+
+        VkFramebuffer framebuf = context->framebuffers[context->img_index]->handle;
+        renderpass_begin(cmdbuf, context->rendpass, framebuf);
+        return 0;
+}
+
+int _end_frame(float time) {
+        vkcmdbuffer_t *cmdbuf = context->cmdbuffers[context->img_index];
+        renderpass_end(cmdbuf, context->rendpass);
+        cmdbuf_end(cmdbuf);
+
+        vkfence_t** img_in_flight = &context->images_in_flight[context->img_index];
+        if (*img_in_flight != NULL)
+                fence_lock(*img_in_flight, context->dev, UINT64_MAX);
+
+        context->images_in_flight[context->img_index] = context->fences_in_flight[context->swapchain->frame];
+        *img_in_flight = context->fences_in_flight[context->swapchain->frame];
+        fence_unlock(*img_in_flight, context->dev);
+
+        for (int i = 0; i < context->dev->num_gfx_queues; i++) {
+                cmdbuf_submit(cmdbuf,
+                              &context->queue_semaphores[context->swapchain->frame],
+                              &context->image_semaphores[context->swapchain->frame],
+                              context->dev->gfx_queues[i],
+                              (*img_in_flight)->handle);
+        }
+
+        vkswapchain_present(context->swapchain,
+                            context->dev,
+                            &context->queue_semaphores[context->swapchain->frame],
+                            &context->img_index);
+
+        cmdbuf_reset(cmdbuf);
+
+        return 0;
+}
+
+void _draw_vulkan(void) {
+        _begin_frame(0);
+        _end_frame(0);
+}
+
+void _clear_vulkan(void) {
+}
+
+renderer_t* select_render_vulkan(window_t *window) {
+        renderer_t *ret = rune_alloc(sizeof(renderer_t));
+        ret->close = _close_vulkan;
+        ret->draw = _draw_vulkan;
+        ret->clear = _clear_vulkan;
+        if (_init_vulkan(window) != 0)
+                rune_abort();
+        return ret;
+}