samples/clock/src/main.c

@@ -19,6 +19,9 @@ f32 minf(f32 a, f32 b);
 
 ORCA_EXPORT void oc_on_init(void)
 {
+    oc_runtime_window_set_title(OC_STR8("clock"));
+    oc_runtime_window_set_size((oc_vec2){ .x = 400, .y = 400 });
+
     surface = oc_surface_canvas();
     canvas = oc_canvas_create();
 

samples/fluid/src/main.c

@@ -615,6 +615,8 @@ ORCA_EXPORT void oc_on_init()
 {
     oc_log_info("Hello, world (from C)");
 
+    oc_runtime_window_set_title(OC_STR8("fluid"));
+
     surface = oc_surface_gles();
     oc_surface_select(surface);
 

samples/glesTriangle/src/main.c

@@ -37,6 +37,8 @@ void compile_shader(GLuint shader, const char* source)
 
 ORCA_EXPORT void oc_on_init(void)
 {
+    oc_runtime_window_set_title(OC_STR8("triangle"));
+
     surface = oc_surface_gles();
     oc_surface_select(surface);
 

samples/pong/src/main.c

@@ -69,6 +69,8 @@ oc_str8 loadFile(oc_arena* arena, oc_str8 filename)
 
 ORCA_EXPORT void oc_on_init(void)
 {
+    oc_runtime_window_set_title(OC_STR8("pong"));
+
     surface = oc_surface_canvas();
     canvas = oc_canvas_create();
 

samples/ui/src/main.c

@@ -10,6 +10,8 @@ oc_arena textArena = { 0 };
 
 ORCA_EXPORT void oc_on_init(void)
 {
+    oc_runtime_window_set_title(OC_STR8("ui"));
+
     surface = oc_surface_canvas();
     canvas = oc_canvas_create();
     oc_ui_init(&ui);

scripts/dev.py

@@ -397,6 +397,7 @@ def gen_all_bindings():
     )
 
     bindgen("core", "src/wasmbind/core_api.json",
+        guest_stubs="src/wasmbind/core_api_stubs.c",
         wasm3_bindings="src/wasmbind/core_api_bind_gen.c",
     )
 

src/app/app.h

@@ -15,8 +15,7 @@
 #include "util/utf8.h"
 
 #ifdef __cplusplus
-extern "C"
-{
+extern "C" {
 #endif
 
 //--------------------------------------------------------------------
@@ -324,8 +323,12 @@ extern "C"
 ORCA_API void oc_window_hide(oc_window window);
 ORCA_API void oc_window_show(oc_window window);
 
+ORCA_API void oc_window_set_title(oc_window window, oc_str8 title);
+
 ORCA_API bool oc_window_is_minimized(oc_window window);
+ORCA_API bool oc_window_is_maximized(oc_window window);
 ORCA_API void oc_window_minimize(oc_window window);
+ORCA_API void oc_window_maximize(oc_window window);
 ORCA_API void oc_window_restore(oc_window window);
 
 ORCA_API bool oc_window_has_focus(oc_window window);
@@ -402,6 +405,10 @@ extern "C"
 
 void ORCA_IMPORT(oc_request_quit)(void);
 
+void ORCA_IMPORT(oc_runtime_window_set_title)(oc_str8 title);
+
+void ORCA_IMPORT(oc_runtime_window_set_size)(oc_vec2 size);
+
 #endif // !defined(OC_PLATFORM_ORCA) || !(OC_PLATFORM_ORCA)
 
 #ifdef __cplusplus

src/app/osx_app.m

@@ -1471,6 +1471,29 @@ bool oc_window_is_focused(oc_window window)
     }
 }
 
+void oc_window_set_title(oc_window window, oc_str8 title)
+{
+    dispatch_block_t block = ^{
+      @autoreleasepool
+      {
+          oc_window_data* windowData = oc_window_ptr_from_handle(window);
+          if(windowData)
+          {
+              windowData->osx.nsWindow.title = [[NSString alloc] initWithBytes:title.ptr length:title.len encoding:NSUTF8StringEncoding];
+          }
+      }
+    };
+
+    if([NSThread isMainThread])
+    {
+        block();
+    }
+    else
+    {
+        dispatch_sync(dispatch_get_main_queue(), block);
+    }
+}
+
 bool oc_window_is_minimized(oc_window window)
 {
     @autoreleasepool
@@ -1634,9 +1657,9 @@ oc_rect oc_window_get_content_rect(oc_window window)
 
 void oc_window_set_content_rect(oc_window window, oc_rect rect)
 {
+    dispatch_block_t block = ^{
       @autoreleasepool
       {
-
           oc_window_data* windowData = oc_window_ptr_from_handle(window);
           if(windowData)
           {
@@ -1652,6 +1675,16 @@ void oc_window_set_content_rect(oc_window window, oc_rect rect)
               [windowData->osx.nsWindow setFrame:frameRect display:YES];
           }
       }
+    };
+
+    if([NSThread isMainThread])
+    {
+        block();
+    }
+    else
+    {
+        dispatch_sync(dispatch_get_main_queue(), block);
+    }
 }
 
 //--------------------------------------------------------------------

src/app/win32_app.c

@@ -789,6 +789,20 @@ void oc_window_show(oc_window window)
     }
 }
 
+void oc_window_set_title(oc_window window, oc_str8 title)
+{
+    oc_window_data* windowData = oc_window_ptr_from_handle(window);
+    if(windowData)
+    {
+        oc_arena_scope scratch = oc_scratch_begin();
+        const char* titleCString = oc_str8_to_cstring(scratch.arena, title);
+
+        SetWindowText(windowData->win32.hWnd, titleCString);
+
+        oc_scratch_end(scratch);
+    }
+}
+
 bool oc_window_is_minimized(oc_window window)
 {
     oc_window_data* windowData = oc_window_ptr_from_handle(window);

src/graphics/mtl_renderer.m

@@ -984,6 +984,8 @@ void oc_mtl_render_batch(oc_mtl_canvas_backend* backend,
         [blitEncoder endEncoding];
 
         //NOTE: path setup pass
+        if(pathCount > 0)
+        {
             id<MTLComputeCommandEncoder> pathEncoder = [surface->commandBuffer computeCommandEncoder];
             pathEncoder.label = @"path pass";
             [pathEncoder setComputePipelineState:backend->pathPipeline];
@@ -1004,15 +1006,18 @@ void oc_mtl_render_batch(oc_mtl_canvas_backend* backend,
 
             [pathEncoder dispatchThreads:pathGridSize threadsPerThreadgroup:pathGroupSize];
             [pathEncoder endEncoding];
-
-        //NOTE: segment setup pass
-        id<MTLComputeCommandEncoder> segmentEncoder = [surface->commandBuffer computeCommandEncoder];
-        segmentEncoder.label = @"segment pass";
-        [segmentEncoder setComputePipelineState:backend->segmentPipeline];
+        }
 
         int tileOpMax = [backend->tileOpBuffer length] / sizeof(oc_mtl_tile_op);
         int segmentMax = [backend->segmentBuffer length] / sizeof(oc_mtl_segment);
 
+        //NOTE: segment setup pass
+        if(eltCount > 0)
+        {
+            id<MTLComputeCommandEncoder> segmentEncoder = [surface->commandBuffer computeCommandEncoder];
+            segmentEncoder.label = @"segment pass";
+            [segmentEncoder setComputePipelineState:backend->segmentPipeline];
+
             [segmentEncoder setBytes:&eltCount length:sizeof(int) atIndex:0];
             [segmentEncoder setBuffer:backend->elementBuffer[backend->bufferIndex] offset:elementBufferOffset atIndex:1];
             [segmentEncoder setBuffer:backend->segmentCountBuffer offset:0 atIndex:2];
@@ -1033,8 +1038,11 @@ void oc_mtl_render_batch(oc_mtl_canvas_backend* backend,
 
             [segmentEncoder dispatchThreads:segmentGridSize threadsPerThreadgroup:segmentGroupSize];
             [segmentEncoder endEncoding];
+        }
 
         //NOTE: backprop pass
+        if(pathCount > 0)
+        {
             id<MTLComputeCommandEncoder> backpropEncoder = [surface->commandBuffer computeCommandEncoder];
             backpropEncoder.label = @"backprop pass";
             [backpropEncoder setComputePipelineState:backend->backpropPipeline];
@@ -1049,8 +1057,11 @@ void oc_mtl_render_batch(oc_mtl_canvas_backend* backend,
 
             [backpropEncoder dispatchThreads:backpropGridSize threadsPerThreadgroup:backpropGroupSize];
             [backpropEncoder endEncoding];
+        }
 
         //NOTE: merge pass
+        if(pathCount > 0)
+        {
             id<MTLComputeCommandEncoder> mergeEncoder = [surface->commandBuffer computeCommandEncoder];
             mergeEncoder.label = @"merge pass";
             [mergeEncoder setComputePipelineState:backend->mergePipeline];
@@ -1074,6 +1085,7 @@ void oc_mtl_render_batch(oc_mtl_canvas_backend* backend,
 
             [mergeEncoder dispatchThreads:mergeGridSize threadsPerThreadgroup:mergeGroupSize];
             [mergeEncoder endEncoding];
+        }
 
         //NOTE: raster pass
         id<MTLComputeCommandEncoder> rasterEncoder = [surface->commandBuffer computeCommandEncoder];

src/orca.c

@@ -96,6 +96,7 @@
 //NOTE: macos application layer and graphics backends are defined in orca.m
 #elif OC_PLATFORM_ORCA
     #include "app/orca_app.c"
+    #include "wasmbind/core_api_stubs.c"
     #include "graphics/graphics_common.c"
     #include "graphics/orca_surface_stubs.c"
 #else

src/runtime.c

@@ -66,6 +66,37 @@ oc_runtime_env* oc_runtime_env_get()
     return (&__orcaApp.runtime);
 }
 
+void* oc_runtime_ptr_to_native(oc_runtime* orca, void* wasmPtr, u32 length)
+{
+    // We can't use the runtime's memory pointer directly because wasm3 embeds a
+    // header at the beginning of the block we give it.
+    u64 bufferIndex = (u64)wasmPtr & 0xffffffff;
+    u32 memSize = 0;
+    char* memory = (char*)m3_GetMemory(orca->runtime.m3Runtime, &memSize, 0);
+
+    if(bufferIndex + length < memSize)
+    {
+        char* nativePtr = memory + bufferIndex;
+        return nativePtr;
+    }
+
+    return NULL;
+}
+
+void oc_runtime_window_set_title(oc_str8 title)
+{
+    title.ptr = oc_runtime_ptr_to_native(oc_runtime_get(), title.ptr, title.len);
+    if(title.ptr)
+    {
+        oc_window_set_title(__orcaApp.window, title);
+    }
+}
+
+void oc_runtime_window_set_size(oc_vec2 size)
+{
+    oc_window_set_content_size(__orcaApp.window, size);
+}
+
 void oc_runtime_log(oc_log_level level,
                     int fileLen,
                     char* file,

src/runtime.h

@@ -125,4 +125,6 @@ typedef struct oc_runtime
 oc_runtime* oc_runtime_get();
 oc_runtime_env* oc_runtime_env_get();
 
+void* oc_runtime_ptr_to_native(oc_runtime* runtime, void* wasmPtr, u32 length);
+
 #endif //__RUNTIME_H_

src/runtime_io.c

@@ -14,19 +14,12 @@ oc_io_cmp oc_runtime_io_wait_single_req(oc_io_req* wasmReq)
 
     oc_io_cmp cmp = { 0 };
     oc_io_req req = *wasmReq;
-    //NOTE: convert the req->buffer wasm pointer to a native pointer
-    //		for some reason, wasm3 memory doesn't start at the beginning of the block we give it.
-    u64 bufferIndex = (u64)req.buffer & 0xffffffff;
-    u32 memSize = 0;
-    char* memory = (char*)m3_GetMemory(orca->runtime.m3Runtime, &memSize, 0);
 
-    if(bufferIndex + req.size > memSize)
+    void* buffer = oc_runtime_ptr_to_native(orca, req.buffer, req.size);
+
+    if(buffer)
     {
-        cmp.error = OC_IO_ERR_ARG;
-    }
-    else
-    {
-        req.buffer = memory + bufferIndex;
+        req.buffer = buffer;
 
         if(req.op == OC_IO_OPEN_AT)
         {
@@ -39,5 +32,10 @@ oc_io_cmp oc_runtime_io_wait_single_req(oc_io_req* wasmReq)
         }
         cmp = oc_io_wait_single_req_with_table(&req, &orca->fileTable);
     }
+    else
+    {
+        cmp.error = OC_IO_ERR_ARG;
+    }
+
     return (cmp);
 }

src/wasmbind/core_api.json

@@ -69,5 +69,23 @@
 	"cname": "oc_request_quit",
 	"ret": {"name": "void", "tag": "v"},
 	"args": []
+},
+{
+	"name": "oc_runtime_window_set_title",
+	"cname": "oc_runtime_window_set_title",
+	"ret": {"name": "void", "tag": "v"},
+	"args": [
+		{ "name": "title",
+		  "type": {"name": "oc_str8", "tag": "S"}}
+	]
+},
+{
+	"name": "oc_runtime_window_set_size",
+	"cname": "oc_runtime_window_set_size",
+	"ret": {"name": "void", "tag": "v"},
+	"args": [
+		{ "name": "size",
+		  "type": {"name": "oc_vec2", "tag": "S"}}
+	]
 }
 ]