Merge pull request #16 from omnisci3nce/port-opengl-ral

Bring back OpenGL (part 1)

1 files changed, 74 insertions, 0 deletions

diff --git a/src/renderer/backends/metal/backend_metal.h b/src/renderer/backends/metal/backend_metal.h
new file mode 100644
index 0000000..9561bb6
--- /dev/null
+++ b/src/renderer/backends/metal/backend_metal.h
@@ -0,0 +1,74 @@
+#pragma once
+// #define CEL_REND_BACKEND_METAL
+#if defined(CEL_REND_BACKEND_METAL)
+
+#include "defines.h"
+#include "maths_types.h"
+#ifdef __OBJC__
+#import <Foundation/Foundation.h>
+#import <Metal/Metal.h>
+#import <MetalKit/MetalKit.h>
+#import <QuartzCore/CAMetalLayer.h>
+#else
+typedef void* id;
+#endif
+
+typedef struct gpu_swapchain {
+  u32x2 dimensions;
+#ifdef __OBJC__
+  CAMetalLayer* swapchain;
+#else
+  void* swapchain;
+#endif
+} gpu_swapchain;
+typedef struct gpu_device {
+/** @brief `device` gives us access to our GPU */
+#ifdef __OBJC__
+  id<MTLDevice> id;
+#else
+  void* id;
+#endif
+} gpu_device;
+typedef struct gpu_pipeline_layout {
+  void* pad;
+} gpu_pipeline_layout;
+typedef struct gpu_pipeline {
+#ifdef __OBJC__
+  id<MTLRenderPipelineState> pipeline_state;
+#else
+  void* pipeline_state;
+#endif
+} gpu_pipeline;
+typedef struct gpu_renderpass {
+#ifdef __OBJC__
+  MTLRenderPassDescriptor* rpass_descriptor;
+#else
+  void* rpass_descriptor;
+#endif
+} gpu_renderpass;
+typedef struct gpu_cmd_encoder {
+#ifdef __OBJC__
+  id<MTLCommandBuffer> cmd_buffer;
+  id<MTLRenderCommandEncoder> render_encoder;
+#else
+  void* cmd_buffer;
+  void* render_encoder;
+#endif
+} gpu_cmd_encoder;
+typedef struct gpu_cmd_buffer {
+  void* pad;
+} gpu_cmd_buffer;
+
+typedef struct gpu_buffer {
+#ifdef __OBJC__
+  id<MTLBuffer> id;
+#else
+  void* id;
+#endif
+  u64 size;
+} gpu_buffer;
+typedef struct gpu_texture {
+  void* pad;
+} gpu_texture;
+
+#endif
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