diff --git a/examples/canvas/main.c b/examples/canvas/main.c
index eb5c0c9..1596add 100644
--- a/examples/canvas/main.c
+++ b/examples/canvas/main.c
@@ -161,6 +161,9 @@ int main()
 		mg_set_color_rgba(0, 1, 1, 1);
 		mg_clear();
 
+		mg_set_color_rgba(1, 0, 1, 1);
+		mg_rectangle_fill(0, 0, 100, 100);
+
 		// head
 		mg_set_color_rgba(1, 1, 0, 1);
 
diff --git a/examples/simpleWindow/build.bat b/examples/simpleWindow/build.bat
index 971b6e5..2f24fa7 100644
--- a/examples/simpleWindow/build.bat
+++ b/examples/simpleWindow/build.bat
@@ -1,2 +1,2 @@
 set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext
-cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib user32.lib opengl32.lib gdi32.lib /out:../../bin/example_window.exe
+cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib user32.lib /out:../../bin/example_simple_window.exe
diff --git a/examples/simpleWindow/build.sh b/examples/simpleWindow/build.sh
index 4c97e8e..67d5f3e 100755
--- a/examples/simpleWindow/build.sh
+++ b/examples/simpleWindow/build.sh
@@ -9,4 +9,6 @@ INCLUDES="-I$SRCDIR -I$SRCDIR/util -I$SRCDIR/platform -I$SRCDIR/app"
 LIBS="-L$BINDIR -lmilepost -framework Carbon -framework Cocoa -framework Metal -framework QuartzCore"
 FLAGS="-mmacos-version-min=10.15.4 -DDEBUG -DLOG_COMPILE_DEBUG"
 
-clang -g $FLAGS -Wl,-dead_strip $LIBS $INCLUDES -o test main.c
+clang -g $FLAGS -Wl,-dead_strip $LIBS $INCLUDES -o $BINDIR/example_simple_window main.c
+
+install_name_tool -add_rpath "@executable_path" $BINDIR/example_simple_window
diff --git a/examples/simpleWindow/main.c b/examples/simpleWindow/main.c
index c659847..eddccde 100644
--- a/examples/simpleWindow/main.c
+++ b/examples/simpleWindow/main.c
@@ -22,6 +22,8 @@ int main()
 	mp_window_bring_to_front(window);
 	mp_window_focus(window);
 
+	mp_window_center(window);
+
 	while(!mp_should_quit())
 	{
 		mp_pump_events(0);
@@ -37,36 +39,44 @@ int main()
 
 				case MP_EVENT_WINDOW_RESIZE:
 				{
-					printf("resized, rect = {%f, %f, %f, %f}\n",
-					       event->frame.rect.x,
-					       event->frame.rect.y,
-					       event->frame.rect.w,
-					       event->frame.rect.h);
+					printf("resized, frame = {%f, %f, %f, %f}, content = {%f, %f, %f, %f}\n",
+					       event->move.frame.x,
+					       event->move.frame.y,
+					       event->move.frame.w,
+					       event->move.frame.h,
+					       event->move.content.x,
+					       event->move.content.y,
+					       event->move.content.w,
+					       event->move.content.h);
 				} break;
 
 				case MP_EVENT_WINDOW_MOVE:
 				{
-					printf("moved, rect = {%f, %f, %f, %f}\n",
-					       event->frame.rect.x,
-					       event->frame.rect.y,
-					       event->frame.rect.w,
-					       event->frame.rect.h);
+					printf("moved, frame = {%f, %f, %f, %f}, content = {%f, %f, %f, %f}\n",
+					       event->move.frame.x,
+					       event->move.frame.y,
+					       event->move.frame.w,
+					       event->move.frame.h,
+					       event->move.content.x,
+					       event->move.content.y,
+					       event->move.content.w,
+					       event->move.content.h);
 				} break;
 
 				case MP_EVENT_MOUSE_MOVE:
 				{
 					printf("mouse moved, pos = {%f, %f}, delta = {%f, %f}\n",
-					       event->move.x,
-					       event->move.y,
-					       event->move.deltaX,
-					       event->move.deltaY);
+					       event->mouse.x,
+					       event->mouse.y,
+					       event->mouse.deltaX,
+					       event->mouse.deltaY);
 				} break;
 
 				case MP_EVENT_MOUSE_WHEEL:
 				{
 					printf("mouse wheel, delta = {%f, %f}\n",
-					       event->move.deltaX,
-					       event->move.deltaY);
+					       event->mouse.deltaX,
+					       event->mouse.deltaY);
 				} break;
 
 				case MP_EVENT_MOUSE_ENTER:
diff --git a/examples/smooth_resize/build.bat b/examples/smooth_resize/build.bat
new file mode 100644
index 0000000..4f2c691
--- /dev/null
+++ b/examples/smooth_resize/build.bat
@@ -0,0 +1,4 @@
+
+set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext /I ../../ext/angle_headers /I ..\..\..\..\vcpkg\packages\pthreads_x64-windows\include
+
+cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /LIBPATH:..\..\..\..\vcpkg\packages\pthreads_x64-windows\lib pthreadVC3.lib /out:../../bin/example_smooth_resize.exe
diff --git a/examples/smooth_resize/main.c b/examples/smooth_resize/main.c
index 645828d..276c0e4 100644
--- a/examples/smooth_resize/main.c
+++ b/examples/smooth_resize/main.c
@@ -6,6 +6,7 @@
 *	@revision:
 *
 *****************************************************************/
+#include<stdio.h>
 #include<stdlib.h>
 #include<string.h>
 #include<errno.h>
@@ -13,45 +14,55 @@
 #define _USE_MATH_DEFINES //NOTE: necessary for MSVC
 #include<math.h>
 
+#define MG_INCLUDE_GL_API
 #include"milepost.h"
 
 #include<pthread.h>
 
-#define LOG_SUBSYSTEM "Main"
+unsigned int program;
 
+const char* vshaderSource =
+	"#version 430\n"
+	"attribute vec4 vPosition;\n"
+	"uniform mat4 transform;\n"
+	"void main()\n"
+	"{\n"
+	"   gl_Position = transform*vPosition;\n"
+	"}\n";
 
-mg_font create_font()
+const char* fshaderSource =
+	"#version 430\n"
+	"precision mediump float;\n"
+	"void main()\n"
+	"{\n"
+	"    gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
+	"}\n";
+
+void compile_shader(GLuint shader, const char* source)
 {
-	//NOTE(martin): create font
-	str8 fontPath = path_executable_relative(mem_scratch(), STR8("../resources/OpenSansLatinSubset.ttf"));
-	char* fontPathCString = str8_to_cstring(mem_scratch(), fontPath);
+	glShaderSource(shader, 1, &source, 0);
+	glCompileShader(shader);
 
-	FILE* fontFile = fopen(fontPathCString, "r");
-	if(!fontFile)
+	int err = glGetError();
+	if(err)
 	{
-		log_error("Could not load font file '%s': %s\n", fontPathCString, strerror(errno));
-		return(mg_font_nil());
+		printf("gl error: %i\n", err);
 	}
-	unsigned char* fontData = 0;
-	fseek(fontFile, 0, SEEK_END);
-	u32 fontDataSize = ftell(fontFile);
-	rewind(fontFile);
-	fontData = (unsigned char*)malloc(fontDataSize);
-	fread(fontData, 1, fontDataSize, fontFile);
-	fclose(fontFile);
 
-	unicode_range ranges[5] = {UNICODE_RANGE_BASIC_LATIN,
-	                           UNICODE_RANGE_C1_CONTROLS_AND_LATIN_1_SUPPLEMENT,
-	                           UNICODE_RANGE_LATIN_EXTENDED_A,
-	                           UNICODE_RANGE_LATIN_EXTENDED_B,
-	                           UNICODE_RANGE_SPECIALS};
-
-	mg_font font = mg_font_create_from_memory(fontDataSize, fontData, 5, ranges);
-	free(fontData);
-
-	return(font);
+	int status = 0;
+	glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
+	if(!status)
+	{
+		char buffer[256];
+		int size = 0;
+		glGetShaderInfoLog(shader, 256, &size, buffer);
+		printf("shader error: %.*s\n", size, buffer);
+	}
 }
 
+GLfloat vertices[] = {
+		-0.866/2, -0.5/2, 0, 0.866/2, -0.5/2, 0, 0, 0.5, 0};
+
 typedef struct app_data
 {
 	mp_window window;
@@ -59,13 +70,7 @@ typedef struct app_data
 	mg_canvas canvas;
 	mg_font font;
 
-	f32 x;
-	f32 y;
-	f32 dx;
-	f32 dy;
-	f32 speed;
-	f32 frameTime;
-
+	GLuint vertexBuffer;
 } app_data;
 
 void process_event(app_data* app, mp_event event)
@@ -79,33 +84,7 @@ void process_event(app_data* app, mp_event event)
 
 		case MP_EVENT_WINDOW_RESIZE:
 		{
-			mp_rect frame = {0, 0, event.frame.rect.w, event.frame.rect.h};
-			mg_surface_set_frame(app->surface, frame);
-		} break;
-
-		case MP_EVENT_KEYBOARD_KEY:
-		{
-			if(event.key.action == MP_KEY_PRESS || event.key.action == MP_KEY_REPEAT)
-			{
-				f32 factor = (event.key.mods & MP_KEYMOD_SHIFT) ? 10 : 1;
-
-				if(event.key.code == MP_KEY_LEFT)
-				{
-						app->x-=0.3*factor;
-				}
-				else if(event.key.code == MP_KEY_RIGHT)
-				{
-						app->x+=0.3*factor;
-				}
-				else if(event.key.code == MP_KEY_UP)
-				{
-						app->y-=0.3*factor;
-				}
-				else if(event.key.code == MP_KEY_DOWN)
-				{
-						app->y+=0.3*factor;
-				}
-			}
+			log_info("resizing window!\n");
 		} break;
 
 		default:
@@ -115,95 +94,89 @@ void process_event(app_data* app, mp_event event)
 
 void update_and_render(app_data* app)
 {
-	mp_rect contentRect = mp_window_get_content_rect(app->window);
-
-	if(app->x-200 < 0)
-	{
-		app->x = 200;
-		app->dx = app->speed;
-	}
-	if(app->x+200 > contentRect.w)
-	{
-		app->x = contentRect.w - 200;
-		app->dx = -app->speed;
-	}
-	if(app->y-200 < 0)
-	{
-		app->y = 200;
-		app->dy = app->speed;
-	}
-	if(app->y+200 > contentRect.h)
-	{
-		app->y = contentRect.h - 200;
-		app->dy = -app->speed;
-	}
-	app->x += app->dx;
-	app->y += app->dy;
-
-	f64 startTime = mp_get_time(MP_CLOCK_MONOTONIC);
-
 	mg_surface_prepare(app->surface);
 
-		// background
-		mg_set_color_rgba(0, 1, 1, 1);
-		mg_clear();
+	glClearColor(0.3, 0.3, 1, 1);
+	glClear(GL_COLOR_BUFFER_BIT);
 
-		// head
-		mg_set_color_rgba(1, 1, 0, 1);
+ 	static float alpha = 0;
+	//f32 aspect = frameSize.x/frameSize.y;
+	f32 aspect = 800/(f32)600;
 
-		mg_circle_fill(app->x, app->y, 200);
+   	GLfloat matrix[] = {cosf(alpha)/aspect, sinf(alpha), 0, 0,
+    	                  	-sinf(alpha)/aspect, cosf(alpha), 0, 0,
+    	                  	0, 0, 1, 0,
+    	                  	0, 0, 0, 1};
 
-		// smile
-		f32 frown = app->frameTime > 0.033 ? -100 : 0;
+   	alpha += 2*M_PI/120;
 
-		mg_set_color_rgba(0, 0, 0, 1);
-		mg_set_width(20);
-		mg_move_to(app->x-100, app->y+100);
-		mg_cubic_to(app->x-50, app->y+150+frown, app->x+50, app->y+150+frown, app->x+100, app->y+100);
-		mg_stroke();
+   	glUniformMatrix4fv(0, 1, false, matrix);
 
-		// eyes
-		mg_ellipse_fill(app->x-70, app->y-50, 30, 50);
-		mg_ellipse_fill(app->x+70, app->y-50, 30, 50);
 
-		// text
-		mg_set_color_rgba(0, 0, 1, 1);
-		mg_set_font(app->font);
-		mg_set_font_size(12);
-		mg_move_to(50, 600-50);
+	glBindBuffer(GL_ARRAY_BUFFER, app->vertexBuffer);
+   	glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
+   	glEnableVertexAttribArray(0);
 
-		str8 text = str8_pushf(mem_scratch(),
-			                     "Milepost vector graphics test program (frame time = %fs, fps = %f)...",
-			                     app->frameTime,
-			                     1./app->frameTime);
-		mg_text_outlines(text);
-		mg_fill();
+   	glDrawArrays(GL_TRIANGLES, 0, 3);
 
-		printf("Milepost vector graphics test program (frame time = %fs, fps = %f)...\n",
-			                     app->frameTime,
-			                     1./app->frameTime);
-
-		mg_flush();
 	mg_surface_present(app->surface);
 
 	mem_arena_clear(mem_scratch());
-	app->frameTime = mp_get_time(MP_CLOCK_MONOTONIC) - startTime;
 }
 
 void* render(void* user)
 {
 	app_data* app = (app_data*)user;
 
-	mg_canvas_prepare(app->canvas);
+	//NOTE: init shader and gl state
+	mg_surface_prepare(app->surface);
+
+	GLuint vao;
+	glGenVertexArrays(1, &vao);
+	glBindVertexArray(vao);
+
+	glGenBuffers(1, &app->vertexBuffer);
+
+	GLfloat vertices[] = {
+		-0.866/2, -0.5/2, 0, 0.866/2, -0.5/2, 0, 0, 0.5, 0};
+
+	glBindBuffer(GL_ARRAY_BUFFER, app->vertexBuffer);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
+
+
+	unsigned int vshader = glCreateShader(GL_VERTEX_SHADER);
+	unsigned int fshader = glCreateShader(GL_FRAGMENT_SHADER);
+	program = glCreateProgram();
+
+	compile_shader(vshader, vshaderSource);
+	compile_shader(fshader, fshaderSource);
+
+	glAttachShader(program, vshader);
+	glAttachShader(program, fshader);
+	glLinkProgram(program);
+
+	int status = 0;
+	glGetProgramiv(program, GL_LINK_STATUS, &status);
+	if(!status)
+	{
+		char buffer[256];
+		int size = 0;
+		glGetProgramInfoLog(program, 256, &size, buffer);
+		printf("link error: %.*s\n", size, buffer);
+ 	}
+
+	glUseProgram(program);
 
 	while(!mp_should_quit())
 	{
-		mp_event event = {0};
-		while(mp_next_event(&event))
+		mp_event* event = 0;
+
+		while((event = mp_next_event(mem_scratch())) != 0)
 		{
-			process_event(app, event);
+			process_event(app, *event);
 		}
 		update_and_render(app);
+		mem_arena_clear(mem_scratch());
 	}
 
 	return(0);
@@ -211,8 +184,6 @@ void* render(void* user)
 
 int main()
 {
-	LogLevel(LOG_LEVEL_WARNING);
-
 	mp_init();
 	mp_clock_init(); //TODO put that in mp_init()?
 
@@ -220,19 +191,16 @@ int main()
 	mp_window window = mp_window_create(windowRect, "test", 0);
 
 	//NOTE: create surface
-	mg_surface surface = mg_surface_create_for_window(window, MG_BACKEND_DEFAULT);
-	mg_surface_swap_interval(surface, 0);
-
-	//TODO: create canvas
-	mg_canvas canvas = mg_canvas_create(surface);
-
-	if(mg_canvas_is_nil(canvas))
+	mg_surface surface = mg_surface_create_for_window(window, MG_GL);
+	if(mg_surface_is_nil(surface))
 	{
-		printf("Error: couldn't create canvas\n");
+		printf("Error: couldn't create surface\n");
 		return(-1);
 	}
 
-	mg_font font = create_font();
+	mg_surface_swap_interval(surface, 1);
+	mg_surface_deselect();
+
 
 	// start app
 	mp_window_bring_to_front(window);
@@ -240,13 +208,7 @@ int main()
 
 	//TODO: start thread
 	app_data app = {.window = window,
-	                .surface = surface,
-	                .canvas = canvas,
-	                .font = font,
-	                .x = 400,
-	                .y = 300,
-	                .dx = 0,
-	                .dy = 0};
+	                .surface = surface};
 
 	pthread_t renderThread;
 	pthread_create(&renderThread, 0, render, &app);
@@ -254,21 +216,11 @@ int main()
 	while(!mp_should_quit())
 	{
 		mp_pump_events(0);
-		/*
-		mp_event event = {0};
-		while(mp_next_event(&event))
-		{
-			process_event(&app, event);
-		}
-		update_and_render(&app);
-		//*/
 	}
 
 	void* res;
 	pthread_join(renderThread, &res);
 
-	mg_font_destroy(font);
-	mg_canvas_destroy(canvas);
 	mg_surface_destroy(surface);
 	mp_window_destroy(window);
 
diff --git a/src/gl_canvas.c b/src/gl_canvas.c
index cc1a635..30c6b35 100644
--- a/src/gl_canvas.c
+++ b/src/gl_canvas.c
@@ -130,6 +130,10 @@ typedef struct mg_gl_canvas_backend
 	mg_canvas_backend interface;
 	mg_wgl_surface* surface;
 
+	int msaaCount;
+	vec2 frameSize;
+
+	// gl stuff
 	GLuint vao;
 
 	GLuint pathSetup;
@@ -155,17 +159,12 @@ typedef struct mg_gl_canvas_backend
 	GLuint tileOpCountBuffer;
 	GLuint screenTilesBuffer;
 	GLuint rasterDispatchBuffer;
-
 	GLuint dummyVertexBuffer;
 
-	int msaaCount;
-	vec2 frameSize;
-
 	//encoding context
 	int pathCount;
 	int eltCount;
 
-	/////////////////
 	int pathBatchStart;
 	int eltBatchStart;
 
@@ -1201,10 +1200,28 @@ void mg_gl_render_batch(mg_gl_canvas_backend* backend,
 	backend->eltBatchStart = backend->eltCount;
 }
 
-/////////////////////////////////////////////////////////////////////////
-//TODO
-void mg_gl_canvas_resize(mg_gl_canvas_backend* backend, vec2 size);
-/////////////////////////////////////////////////////////////////////////
+void mg_gl_canvas_resize(mg_gl_canvas_backend* backend, vec2 size)
+{
+	int tileSize = MG_GL_TILE_SIZE;
+	int nTilesX = (int)(size.x + tileSize - 1)/tileSize;
+	int nTilesY = (int)(size.y + tileSize - 1)/tileSize;
+
+	glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->screenTilesBuffer);
+	glBufferData(GL_SHADER_STORAGE_BUFFER, nTilesX*nTilesY*sizeof(mg_gl_screen_tile), 0, GL_DYNAMIC_COPY);
+
+	if(backend->outTexture)
+	{
+		//NOTE: do we need to explicitly glDeleteTextures()?
+		glDeleteTextures(1, &backend->outTexture);
+		glGenTextures(1, &backend->outTexture);
+		glBindTexture(GL_TEXTURE_2D, backend->outTexture);
+		glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, size.x, size.y);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	}
+
+	backend->frameSize = size;
+}
 
 void mg_gl_canvas_render(mg_canvas_backend* interface,
                          mg_color clearColor,
@@ -1224,23 +1241,25 @@ void mg_gl_canvas_render(mg_canvas_backend* interface,
 		backend->bufferSync[backend->bufferIndex] = 0;
 	}
 
-	//TODO update screen tiles buffer size
+	//NOTE update screen tiles buffer size
 	mg_wgl_surface* surface = backend->surface;
-	mp_rect frame = surface->interface.getFrame((mg_surface_data*)surface);
+	vec2 surfaceSize = surface->interface.getSize((mg_surface_data*)surface);
 	vec2 contentsScaling = surface->interface.contentsScaling((mg_surface_data*)surface);
-	//TODO support scaling in both axes
+	//TODO support scaling in both axes?
 	f32 scale = contentsScaling.x;
 
-	vec2 viewportSize = {frame.w * scale, frame.h * scale};
+	vec2 viewportSize = {surfaceSize.x * scale, surfaceSize.y * scale};
 	int tileSize = MG_GL_TILE_SIZE;
-	int nTilesX = (int)(frame.w * scale + tileSize - 1)/tileSize;
-	int nTilesY = (int)(frame.h * scale + tileSize - 1)/tileSize;
+	int nTilesX = (int)(viewportSize.x + tileSize - 1)/tileSize;
+	int nTilesY = (int)(viewportSize.y + tileSize - 1)/tileSize;
 
 	if(viewportSize.x != backend->frameSize.x || viewportSize.y != backend->frameSize.y)
 	{
-		//TODO:	mg_gl_canvas_resize(backend, viewportSize);
+		mg_gl_canvas_resize(backend, viewportSize);
 	}
 
+	glViewport(0, 0, viewportSize.x, viewportSize.y);
+
 	//NOTE: clear screen and reset input buffer offsets
 	glEnable(GL_BLEND);
 	glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
@@ -1544,12 +1563,14 @@ mg_canvas_backend* gl_canvas_backend_create(mg_wgl_surface* surface)
 		}
 
 		//NOTE: create out texture
-		mp_rect frame = surface->interface.getFrame((mg_surface_data*)surface);
+		vec2 size = surface->interface.getSize((mg_surface_data*)surface);
 		vec2 scale = surface->interface.contentsScaling((mg_surface_data*)surface);
 
+		backend->frameSize = (vec2){size.x * scale.x, size.y * scale.y};
+
 		glGenTextures(1, &backend->outTexture);
 		glBindTexture(GL_TEXTURE_2D, backend->outTexture);
-		glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, frame.w*scale.x, frame.h*scale.y);
+		glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, backend->frameSize.x, backend->frameSize.y);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
@@ -1611,8 +1632,8 @@ mg_canvas_backend* gl_canvas_backend_create(mg_wgl_surface* surface)
 		glBufferData(GL_SHADER_STORAGE_BUFFER, sizeof(int), 0, GL_DYNAMIC_COPY);
 
 		int tileSize = MG_GL_TILE_SIZE;
-		int nTilesX = (int)(frame.w * scale.x + tileSize - 1)/tileSize;
-		int nTilesY = (int)(frame.h * scale.y + tileSize - 1)/tileSize;
+		int nTilesX = (int)(backend->frameSize.x + tileSize - 1)/tileSize;
+		int nTilesY = (int)(backend->frameSize.y + tileSize - 1)/tileSize;
 
 		glGenBuffers(1, &backend->screenTilesBuffer);
 		glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->screenTilesBuffer);
diff --git a/src/graphics.h b/src/graphics.h
index 2eac71a..3a9a875 100644
--- a/src/graphics.h
+++ b/src/graphics.h
@@ -105,9 +105,8 @@ MP_API void mg_surface_present(mg_surface surface);
 MP_API void mg_surface_deselect(void);
 
 MP_API void mg_surface_swap_interval(mg_surface surface, int swap);
+MP_API vec2 mg_surface_get_size(mg_surface surface);
 MP_API vec2 mg_surface_contents_scaling(mg_surface surface);
-MP_API mp_rect mg_surface_get_frame(mg_surface surface);
-MP_API void mg_surface_set_frame(mg_surface surface, mp_rect frame);
 MP_API bool mg_surface_get_hidden(mg_surface surface);
 MP_API void mg_surface_set_hidden(mg_surface surface, bool hidden);
 
diff --git a/src/graphics_surface.c b/src/graphics_surface.c
index 5715f89..e3d3023 100644
--- a/src/graphics_surface.c
+++ b/src/graphics_surface.c
@@ -147,6 +147,7 @@ mg_surface mg_surface_create_for_window(mp_window window, mg_surface_api api)
 	if(surface)
 	{
 		surfaceHandle = mg_surface_handle_alloc(surface);
+		mg_surface_prepare(surfaceHandle);
 	}
 	return(surfaceHandle);
 }
@@ -174,6 +175,7 @@ mg_surface mg_surface_create_remote(u32 width, u32 height, mg_surface_api api)
 	if(surface)
 	{
 		surfaceHandle = mg_surface_handle_alloc(surface);
+		mg_surface_prepare(surfaceHandle);
 	}
 	return(surfaceHandle);
 }
@@ -263,6 +265,18 @@ void mg_surface_swap_interval(mg_surface surface, int swap)
 	}
 }
 
+vec2 mg_surface_get_size(mg_surface surface)
+{
+	DEBUG_ASSERT(__mgData.init);
+	vec2 size = {0};
+	mg_surface_data* surfaceData = mg_surface_data_from_handle(surface);
+	if(surfaceData && surfaceData->getSize)
+	{
+		size = surfaceData->getSize(surfaceData);
+	}
+	return(size);
+}
+
 vec2 mg_surface_contents_scaling(mg_surface surface)
 {
 	DEBUG_ASSERT(__mgData.init);
@@ -275,29 +289,6 @@ vec2 mg_surface_contents_scaling(mg_surface surface)
 	return(scaling);
 }
 
-
-void mg_surface_set_frame(mg_surface surface, mp_rect frame)
-{
-	DEBUG_ASSERT(__mgData.init);
-	mg_surface_data* surfaceData = mg_surface_data_from_handle(surface);
-	if(surfaceData && surfaceData->setFrame)
-	{
-		surfaceData->setFrame(surfaceData, frame);
-	}
-}
-
-mp_rect mg_surface_get_frame(mg_surface surface)
-{
-	DEBUG_ASSERT(__mgData.init);
-	mp_rect res = {0};
-	mg_surface_data* surfaceData = mg_surface_data_from_handle(surface);
-	if(surfaceData && surfaceData->getFrame)
-	{
-		res = surfaceData->getFrame(surfaceData);
-	}
-	return(res);
-}
-
 void mg_surface_set_hidden(mg_surface surface, bool hidden)
 {
 	DEBUG_ASSERT(__mgData.init);
diff --git a/src/graphics_surface.h b/src/graphics_surface.h
index fed7d6c..0dca19b 100644
--- a/src/graphics_surface.h
+++ b/src/graphics_surface.h
@@ -26,9 +26,8 @@ typedef void (*mg_surface_prepare_proc)(mg_surface_data* surface);
 typedef void (*mg_surface_deselect_proc)(mg_surface_data* surface);
 typedef void (*mg_surface_present_proc)(mg_surface_data* surface);
 typedef void (*mg_surface_swap_interval_proc)(mg_surface_data* surface, int swap);
+typedef vec2 (*mg_surface_get_size_proc)(mg_surface_data* surface);
 typedef vec2 (*mg_surface_contents_scaling_proc)(mg_surface_data* surface);
-typedef mp_rect (*mg_surface_get_frame_proc)(mg_surface_data* surface);
-typedef void (*mg_surface_set_frame_proc)(mg_surface_data* surface, mp_rect frame);
 typedef bool (*mg_surface_get_hidden_proc)(mg_surface_data* surface);
 typedef void (*mg_surface_set_hidden_proc)(mg_surface_data* surface, bool hidden);
 typedef void* (*mg_surface_native_layer_proc)(mg_surface_data* surface);
@@ -45,9 +44,8 @@ typedef struct mg_surface_data
 	mg_surface_present_proc present;
 	mg_surface_deselect_proc deselect;
 	mg_surface_swap_interval_proc swapInterval;
+	mg_surface_get_size_proc getSize;
 	mg_surface_contents_scaling_proc contentsScaling;
-	mg_surface_get_frame_proc getFrame;
-	mg_surface_set_frame_proc setFrame;
 	mg_surface_get_hidden_proc getHidden;
 	mg_surface_set_hidden_proc setHidden;
 	mg_surface_native_layer_proc nativeLayer;
@@ -79,34 +77,6 @@ typedef struct mg_image_data
 
 } mg_image_data;
 
-typedef struct mg_vertex_layout
-{
-	u32 maxVertexCount;
-	u32 maxIndexCount;
-
-	char* posBuffer;
-	u32 posStride;
-
-	char* cubicBuffer;
-	u32 cubicStride;
-
-	char* shapeIndexBuffer;
-	u32 shapeIndexStride;
-
-	char* colorBuffer;
-	u32 colorStride;
-
-	char* clipBuffer;
-	u32 clipStride;
-
-	char* uvTransformBuffer;
-	u32 uvTransformStride;
-
-	char* indexBuffer;
-	u32 indexStride;
-
-} mg_vertex_layout;
-
 typedef void (*mg_canvas_backend_destroy_proc)(mg_canvas_backend* backend);
 typedef void (*mg_canvas_backend_begin_proc)(mg_canvas_backend* backend, mg_color clearColor);
 typedef void (*mg_canvas_backend_end_proc)(mg_canvas_backend* backend);
@@ -133,8 +103,6 @@ typedef void (*mg_canvas_backend_render_proc)(mg_canvas_backend* backend,
 
 typedef struct mg_canvas_backend
 {
-//	mg_vertex_layout vertexLayout;
-
 	mg_canvas_backend_destroy_proc destroy;
 	mg_canvas_backend_begin_proc begin;
 	mg_canvas_backend_end_proc end;
@@ -144,7 +112,6 @@ typedef struct mg_canvas_backend
 	mg_canvas_backend_image_destroy_proc imageDestroy;
 	mg_canvas_backend_image_upload_region_proc imageUploadRegion;
 
-
 	mg_canvas_backend_render_proc render;
 
 } mg_canvas_backend;
diff --git a/src/input_state.c b/src/input_state.c
index 1a1f385..074c805 100644
--- a/src/input_state.c
+++ b/src/input_state.c
@@ -136,11 +136,11 @@ void mp_input_process_event(mp_input_state* state, mp_event* event)
 			break;
 
 		case MP_EVENT_MOUSE_MOVE:
-			mp_update_mouse_move(state, event->move.x, event->move.y, event->move.deltaX, event->move.deltaY);
+			mp_update_mouse_move(state, event->mouse.x, event->mouse.y, event->mouse.deltaX, event->mouse.deltaY);
 			break;
 
 		case MP_EVENT_MOUSE_WHEEL:
-			mp_update_mouse_wheel(state, event->move.deltaX, event->move.deltaY);
+			mp_update_mouse_wheel(state, event->mouse.deltaX, event->mouse.deltaY);
 			break;
 
 		case MP_EVENT_MOUSE_BUTTON:
diff --git a/src/mp_app.c b/src/mp_app.c
index cb053c3..7cc9f68 100644
--- a/src/mp_app.c
+++ b/src/mp_app.c
@@ -179,3 +179,39 @@ mp_event* mp_next_event(mem_arena* arena)
 	}
 	return(event);
 }
+
+//---------------------------------------------------------------
+// window rects helpers
+//---------------------------------------------------------------
+
+void mp_window_set_content_position(mp_window window, vec2 position)
+{
+	mp_rect rect = mp_window_get_content_rect(window);
+	rect.x = position.x;
+	rect.y = position.y;
+	mp_window_set_content_rect(window, rect);
+}
+
+void mp_window_set_content_size(mp_window window, vec2 size)
+{
+	mp_rect rect = mp_window_get_content_rect(window);
+	rect.w = size.x;
+	rect.h = size.y;
+	mp_window_set_content_rect(window, rect);
+}
+
+void mp_window_set_frame_position(mp_window window, vec2 position)
+{
+	mp_rect frame = mp_window_get_frame_rect(window);
+	frame.x = position.x;
+	frame.y = position.y;
+	mp_window_set_frame_rect(window, frame);
+}
+
+void mp_window_set_frame_size(mp_window window, vec2 size)
+{
+	mp_rect frame = mp_window_get_frame_rect(window);
+	frame.w = size.x;
+	frame.h = size.y;
+	mp_window_set_frame_rect(window, frame);
+}
diff --git a/src/mp_app.h b/src/mp_app.h
index 237b598..ffe79fb 100644
--- a/src/mp_app.h
+++ b/src/mp_app.h
@@ -222,19 +222,20 @@ typedef struct mp_char_event		// character input
 	u8	  seqLen;
 } mp_char_event;
 
-typedef struct mp_move_event		// mouse move/scroll
+typedef struct mp_mouse_event		// mouse move/scroll
 {
 	f32 x;
 	f32 y;
 	f32 deltaX;
 	f32 deltaY;
 	mp_keymod_flags mods;
-} mp_move_event;
+} mp_mouse_event;
 
-typedef struct mp_frame_event		// window resize / move
+typedef struct mp_move_event		// window resize / move
 {
-	mp_rect rect;
-} mp_frame_event;
+	mp_rect frame;
+	mp_rect content;
+} mp_move_event;
 
 typedef struct mp_event
 {
@@ -246,8 +247,8 @@ typedef struct mp_event
 	{
 		mp_key_event   key;
 		mp_char_event  character;
-		mp_move_event  move;
-		mp_frame_event frame;
+		mp_mouse_event  mouse;
+		mp_move_event move;
 		str8_list paths;
 	};
 
@@ -314,10 +315,15 @@ MP_API void mp_window_unfocus(mp_window window);
 MP_API void mp_window_send_to_back(mp_window window);
 MP_API void mp_window_bring_to_front(mp_window window);
 
-MP_API mp_rect mp_window_get_content_rect(mp_window window);
 MP_API mp_rect mp_window_get_frame_rect(mp_window window);
-MP_API void mp_window_set_content_rect(mp_window window, mp_rect contentRect);
-MP_API void mp_window_set_frame_rect(mp_window window, mp_rect frameRect);
+MP_API void mp_window_set_frame_rect(mp_window window, mp_rect rect);
+MP_API void mp_window_set_frame_position(mp_window window, vec2 position);
+MP_API void mp_window_set_frame_size(mp_window window, vec2 size);
+
+MP_API mp_rect mp_window_get_content_rect(mp_window window);
+MP_API void mp_window_set_content_rect(mp_window window, mp_rect rect);
+MP_API void mp_window_set_content_position(mp_window window, vec2 position);
+MP_API void mp_window_set_content_size(mp_window window, vec2 size);
 
 MP_API void mp_window_center(mp_window window);
 
diff --git a/src/mp_app_internal.h b/src/mp_app_internal.h
index e801a96..931934b 100644
--- a/src/mp_app_internal.h
+++ b/src/mp_app_internal.h
@@ -39,8 +39,6 @@ typedef struct mp_window_data
 	list_elt freeListElt;
 	u32 generation;
 
-	mp_rect contentRect;
-	mp_rect frameRect;
 	mp_window_style	style;
 
 	bool shouldClose; //TODO could be in status flags
diff --git a/src/mtl_renderer.m b/src/mtl_renderer.m
index 53d805a..8cd5811 100644
--- a/src/mtl_renderer.m
+++ b/src/mtl_renderer.m
@@ -1159,6 +1159,8 @@ void mg_mtl_canvas_resize(mg_mtl_canvas_backend* backend, vec2 size)
 
 		backend->outTexture = [backend->surface->device newTextureWithDescriptor:texDesc];
 
+		backend->surface->mtlLayer.drawableSize = (CGSize){size.x, size.y};
+
 		backend->frameSize = size;
 	}
 }
@@ -1179,13 +1181,13 @@ void mg_mtl_canvas_render(mg_canvas_backend* interface,
 	//NOTE: ensure screen tiles buffer is correct size
 	mg_mtl_surface* surface = backend->surface;
 
-	mp_rect frame = surface->interface.getFrame((mg_surface_data*)surface);
+	vec2 frameSize = surface->interface.getSize((mg_surface_data*)surface);
 
 	f32 scale = surface->mtlLayer.contentsScale;
-	vec2 viewportSize = {frame.w * scale, frame.h * scale};
+	vec2 viewportSize = {frameSize.x * scale, frameSize.y * scale};
 	int tileSize = MG_MTL_TILE_SIZE;
-	int nTilesX = (int)(frame.w * scale + tileSize - 1)/tileSize;
-	int nTilesY = (int)(frame.h * scale + tileSize - 1)/tileSize;
+	int nTilesX = (int)(viewportSize.x * scale + tileSize - 1)/tileSize;
+	int nTilesY = (int)(viewportSize.y * scale + tileSize - 1)/tileSize;
 
 	if(viewportSize.x != backend->frameSize.x || viewportSize.y != backend->frameSize.y)
 	{
@@ -1482,10 +1484,10 @@ mg_canvas_backend* mtl_canvas_backend_create(mg_mtl_surface* surface)
 		backend->blitPipeline = [surface->device newRenderPipelineStateWithDescriptor: pipelineStateDescriptor error:&err];
 
 		//NOTE: create textures
-		mp_rect frame = surface->interface.getFrame((mg_surface_data*)surface);
+		vec2 size = surface->interface.getSize((mg_surface_data*)surface);
 		f32 scale = surface->mtlLayer.contentsScale;
 
-		backend->frameSize = (vec2){frame.w*scale, frame.h*scale};
+		backend->frameSize = (vec2){size.x*scale, size.y*scale};
 
 		MTLTextureDescriptor* texDesc = [[MTLTextureDescriptor alloc] init];
 		texDesc.textureType = MTLTextureType2D;
@@ -1540,8 +1542,8 @@ mg_canvas_backend* mtl_canvas_backend_create(mg_mtl_surface* surface)
 		                                                   options: bufferOptions];
 
 		int tileSize = MG_MTL_TILE_SIZE;
-		int nTilesX = (int)(frame.w * scale + tileSize - 1)/tileSize;
-		int nTilesY = (int)(frame.h * scale + tileSize - 1)/tileSize;
+		int nTilesX = (int)(backend->frameSize.x + tileSize - 1)/tileSize;
+		int nTilesY = (int)(backend->frameSize.y + tileSize - 1)/tileSize;
 		backend->screenTilesBuffer = [surface->device newBufferWithLength: nTilesX*nTilesY*sizeof(mg_mtl_screen_tile)
 		                                                   options: bufferOptions];
 
diff --git a/src/mtl_surface.m b/src/mtl_surface.m
index c4811ba..179e6b5 100644
--- a/src/mtl_surface.m
+++ b/src/mtl_surface.m
@@ -116,6 +116,7 @@ void mg_mtl_surface_swap_interval(mg_surface_data* interface, int swap)
 	}
 }
 
+/*
 void mg_mtl_surface_set_frame(mg_surface_data* interface, mp_rect frame)
 {
 	mg_mtl_surface* surface = (mg_mtl_surface*)interface;
@@ -135,6 +136,7 @@ void mg_mtl_surface_set_frame(mg_surface_data* interface, mp_rect frame)
 	CGSize drawableSize = (CGSize){.width = frame.w * scale.x, .height = frame.h * scale.y};
 	surface->mtlLayer.drawableSize = drawableSize;
 }
+*/
 
 
 //TODO fix that according to real scaling, depending on the monitor settings
@@ -162,8 +164,6 @@ mg_surface_data* mg_mtl_surface_create_for_window(mp_window window)
 		surface->interface.present = mg_mtl_surface_present;
 		surface->interface.swapInterval = mg_mtl_surface_swap_interval;
 
-		surface->interface.setFrame = mg_mtl_surface_set_frame;
-
 		@autoreleasepool
 		{
 			//-----------------------------------------------------------
@@ -203,7 +203,7 @@ mg_surface_data* mg_mtl_surface_create_for_window(mp_window window)
 
 
 			[surface->mtlLayer setOpaque:NO];
-
+			surface->mtlLayer.autoresizingMask = kCALayerWidthSizable | kCALayerHeightSizable;
 			[surface->interface.layer.caLayer addSublayer: (CALayer*)surface->mtlLayer];
 
 			//-----------------------------------------------------------
diff --git a/src/osx_app.m b/src/osx_app.m
index affb7d7..093f0d6 100644
--- a/src/osx_app.m
+++ b/src/osx_app.m
@@ -26,44 +26,6 @@
 // mp window struct and utility functions
 //--------------------------------------------------------------------
 
-static mp_rect mp_osx_to_user_screen_rect(mp_rect rect)
-{
-	@autoreleasepool
-	{
-		NSRect screenRect = [[NSScreen mainScreen] frame];
-		rect.y = screenRect.size.height - rect.y - rect.h;
-	}
-	return(rect);
-}
-
-static mp_rect mp_user_to_osx_screen_rect(mp_rect rect)
-{
-	@autoreleasepool
-	{
-		NSRect screenRect = [[NSScreen mainScreen] frame];
-		rect.y = screenRect.size.height - rect.y - rect.h;
-	}
-	return(rect);
-}
-
-static void mp_window_update_rect_cache(mp_window_data* window)
-{
-	@autoreleasepool
-	{
-		NSRect frame = [window->osx.nsWindow frame];
-		window->frameRect = mp_osx_to_user_screen_rect((mp_rect){frame.origin.x, frame.origin.y, frame.size.width, frame.size.height});
-
-		const NSRect contentRect = [[window->osx.nsWindow contentView] frame];
-
-		window->contentRect = (mp_rect){ contentRect.origin.x,
-							 contentRect.origin.y,
-							 contentRect.size.width,
-							 contentRect.size.height };
-
-		window->contentRect.y = window->frameRect.h - window->contentRect.y - window->contentRect.h;
-	}
-}
-
 static u32 mp_osx_get_window_style_mask(mp_window_style style)
 {
 	u32 mask = 0;
@@ -657,16 +619,22 @@ void mp_install_keyboard_layout_listener()
 - (void)windowDidMove:(NSNotification *)notification
 {
 	const NSRect contentRect = [[mpWindow->osx.nsWindow contentView] frame];
-
-	mp_window_update_rect_cache(mpWindow);
+	const NSRect frameRect = [mpWindow->osx.nsWindow frame];
+	NSScreen* screen = mpWindow->osx.nsWindow.screen;
 
 	mp_event event = {};
 	event.window = mp_window_handle_from_ptr(mpWindow);
 	event.type = MP_EVENT_WINDOW_MOVE;
-	event.frame.rect.x = contentRect.origin.x;
-	event.frame.rect.y = contentRect.origin.y;
-	event.frame.rect.w = contentRect.size.width;
-	event.frame.rect.h = contentRect.size.height;
+
+	event.move.frame.x = frameRect.origin.x;
+	event.move.frame.y = screen.frame.size.height - frameRect.origin.y - frameRect.size.height;
+	event.move.frame.w = frameRect.size.width;
+	event.move.frame.h = frameRect.size.height;
+
+	event.move.content.x = frameRect.origin.x + contentRect.origin.x;
+	event.move.content.y = screen.frame.size.height - frameRect.origin.y - contentRect.origin.y - contentRect.size.height;
+	event.move.content.w = contentRect.size.width;
+	event.move.content.h = contentRect.size.height;
 
 	mp_queue_event(&event);
 }
@@ -674,16 +642,22 @@ void mp_install_keyboard_layout_listener()
 - (void)windowDidResize:(NSNotification *)notification
 {
 	const NSRect contentRect = [[mpWindow->osx.nsWindow contentView] frame];
-
-	mp_window_update_rect_cache(mpWindow);
+	const NSRect frameRect = [mpWindow->osx.nsWindow frame];
+	NSScreen* screen = mpWindow->osx.nsWindow.screen;
 
 	mp_event event = {};
 	event.window = mp_window_handle_from_ptr(mpWindow);
 	event.type = MP_EVENT_WINDOW_RESIZE;
-	event.frame.rect.x = contentRect.origin.x;
-	event.frame.rect.y = contentRect.origin.y;
-	event.frame.rect.w = contentRect.size.width;
-	event.frame.rect.h = contentRect.size.height;
+
+	event.move.frame.x = frameRect.origin.x;
+	event.move.frame.y = screen.frame.size.height - frameRect.origin.y - frameRect.size.height;
+	event.move.frame.w = frameRect.size.width;
+	event.move.frame.h = frameRect.size.height;
+
+	event.move.content.x = frameRect.origin.x + contentRect.origin.x;
+	event.move.content.y = screen.frame.size.height - frameRect.origin.y - contentRect.origin.y - contentRect.size.height;
+	event.move.content.w = contentRect.size.width;
+	event.move.content.h = contentRect.size.height;
 
 	if(__mpApp.liveResizeCallback)
 	{
@@ -869,11 +843,11 @@ static void mp_process_mouse_button(NSEvent* nsEvent, mp_window_data* window, mp
 	mp_event event = {};
 	event.type = MP_EVENT_MOUSE_MOVE;
 	event.window = mp_window_handle_from_ptr(window);
-	event.move.x = p.x;
-	event.move.y = frame.size.height - p.y;
-	event.move.deltaX = [nsEvent deltaX];
-	event.move.deltaY = [nsEvent deltaY];
-	event.move.mods = mp_convert_osx_mods([nsEvent modifierFlags]);
+	event.mouse.x = p.x;
+	event.mouse.y = frame.size.height - p.y;
+	event.mouse.deltaX = [nsEvent deltaX];
+	event.mouse.deltaY = [nsEvent deltaY];
+	event.mouse.mods = mp_convert_osx_mods([nsEvent modifierFlags]);
 
 	mp_queue_event(&event);
 }
@@ -885,11 +859,11 @@ static void mp_process_mouse_button(NSEvent* nsEvent, mp_window_data* window, mp
 	event.type = MP_EVENT_MOUSE_WHEEL;
 
 	double factor = [nsEvent hasPreciseScrollingDeltas] ? 0.1 : 1.0;
-	event.move.x = 0;
-	event.move.y = 0;
-	event.move.deltaX = -[nsEvent scrollingDeltaX]*factor;
-	event.move.deltaY = -[nsEvent scrollingDeltaY]*factor;
-	event.move.mods = mp_convert_osx_mods([nsEvent modifierFlags]);
+	event.mouse.x = 0;
+	event.mouse.y = 0;
+	event.mouse.deltaX = -[nsEvent scrollingDeltaX]*factor;
+	event.mouse.deltaY = -[nsEvent scrollingDeltaY]*factor;
+	event.mouse.mods = mp_convert_osx_mods([nsEvent modifierFlags]);
 
 	mp_queue_event(&event);
 }
@@ -1331,15 +1305,6 @@ str8 mp_clipboard_get_data_for_tag(mem_arena* arena, const char* tag)
 // Window public API
 //---------------------------------------------------------------
 
-/*
-//TODO(martin): review include scheme
-extern "C" {
-	mp_graphics_surface mp_metal_surface_create_for_window_ptr(mp_window_data* window);
-	mp_graphics_surface mp_graphics_surface_null_handle();
-	mp_graphics_surface mp_graphics_surface_handle_from_ptr(mp_graphics_surface_data* surface);
-}
-*/
-
 mp_window mp_window_create(mp_rect contentRect, const char* title, mp_window_style style)
 {@autoreleasepool{
 	mp_window_data* window = mp_window_alloc();
@@ -1392,7 +1357,6 @@ mp_window mp_window_create(mp_rect contentRect, const char* title, mp_window_sty
 	[window->osx.nsWindow makeFirstResponder:view];
 	[window->osx.nsWindow setAcceptsMouseMovedEvents:YES];
 
-	mp_window_update_rect_cache(window);
 
 	mp_window windowHandle = mp_window_handle_from_ptr(window);
 
@@ -1545,122 +1509,82 @@ void mp_window_bring_to_front_and_focus(mp_window window)
 	mp_window_focus(window);
 }
 
+mp_rect mp_window_get_frame_rect(mp_window window)
+{
+	mp_rect rect = {0};
+	mp_window_data* windowData = mp_window_ptr_from_handle(window);
+	if(windowData)
+	{
+		NSRect frameRect = windowData->osx.nsWindow.frame;
+		NSScreen* screen = windowData->osx.nsWindow.screen;
 
-mp_rect mp_window_content_rect_for_frame_rect(mp_rect frameRect, mp_window_style style)
-{@autoreleasepool{
-	u32 mask = mp_osx_get_window_style_mask(style);
-	mp_rect nativeFrame = mp_user_to_osx_screen_rect(frameRect);
-	NSRect frame = NSMakeRect(nativeFrame.x, nativeFrame.y, nativeFrame.w, nativeFrame.h);
-	NSRect content = [NSWindow contentRectForFrameRect:frame styleMask:mask];
-	mp_rect result = {content.origin.x, content.origin.y, content.size.width, content.size.height};
-	result = mp_osx_to_user_screen_rect(result);
-	return(result);
-}}
+		rect = (mp_rect){
+			frameRect.origin.x,
+			screen.frame.size.height - frameRect.origin.y - frameRect.size.height,
+			frameRect.size.width,
+			frameRect.size.height
+		};
+	}
+	return(rect);
+}
 
-mp_rect mp_window_frame_rect_for_content_rect(mp_rect contentRect, mp_window_style style)
+void mp_window_set_frame_rect(mp_window window, mp_rect rect)
 {@autoreleasepool{
-	uint32 mask = mp_osx_get_window_style_mask(style);
-	mp_rect nativeContent = mp_user_to_osx_screen_rect(contentRect);
-	NSRect content = NSMakeRect(nativeContent.x, nativeContent.y, nativeContent.w, nativeContent.h);
-	NSRect frame = [NSWindow frameRectForContentRect:content styleMask:mask];
-	mp_rect result = {frame.origin.x, frame.origin.y, frame.size.width, frame.size.height};
-	result = mp_osx_to_user_screen_rect(result);
-	return(result);
+	mp_window_data* windowData = mp_window_ptr_from_handle(window);
+	if(windowData)
+	{
+		NSScreen* screen = windowData->osx.nsWindow.screen;
+		NSRect frameRect = {
+			rect.x,
+			screen.frame.size.height - rect.y - rect.h,
+			rect.w,
+			rect.h
+		};
+		[windowData->osx.nsWindow setFrame:frameRect display:YES];
+	}
 }}
 
 mp_rect mp_window_get_content_rect(mp_window window)
-{
+{@autoreleasepool{
 	mp_window_data* windowData = mp_window_ptr_from_handle(window);
 	if(windowData)
 	{
-		return(windowData->contentRect);
-	}
-	else
-	{
-		return((mp_rect){});
-	}
-}
+		NSScreen* screen = [windowData->osx.nsWindow screen];
+		NSView* view = [windowData->osx.nsWindow contentView];
+		NSRect contentRect = [windowData->osx.nsWindow convertRectToScreen: view.frame];
+
+		mp_rect rect = {
+			contentRect.origin.x,
+			screen.frame.size.height - contentRect.origin.y - contentRect.size.height,
+			contentRect.size.width,
+			contentRect.size.height};
 
-mp_rect mp_window_get_absolute_content_rect(mp_window window)
-{
-	mp_window_data* windowData = mp_window_ptr_from_handle(window);
-	if(windowData)
-	{
-		mp_rect rect = windowData->contentRect;
-		rect.x += windowData->frameRect.x;
-		rect.y += windowData->frameRect.y;
 		return(rect);
 	}
 	else
 	{
 		return((mp_rect){});
 	}
-}
-
-mp_rect mp_window_get_frame_rect(mp_window window)
-{
-	mp_window_data* windowData = mp_window_ptr_from_handle(window);
-	if(windowData)
-	{
-		return(windowData->frameRect);
-	}
-	else
-	{
-		return((mp_rect){});
-	}
-}
-
-void mp_window_set_content_rect(mp_window window, mp_rect contentRect)
-{@autoreleasepool{
-	mp_window_data* windowData = mp_window_ptr_from_handle(window);
-	if(windowData)
-	{
-		u32 mask = mp_osx_get_window_style_mask(windowData->style);
-
-		mp_rect nativeRect = mp_user_to_osx_screen_rect(contentRect);
-		NSRect content = NSMakeRect(nativeRect.x, nativeRect.y, nativeRect.w, nativeRect.h);
-		NSRect frame = [NSWindow frameRectForContentRect:content styleMask:mask];
-
-		[windowData->osx.nsWindow setFrame:frame display:YES];
-
-		mp_window_update_rect_cache(windowData);
-	}
-}}
-void mp_window_set_frame_rect(mp_window window, mp_rect frameRect)
-{@autoreleasepool{
-	mp_window_data* windowData = mp_window_ptr_from_handle(window);
-	if(windowData)
-	{
-		mp_rect nativeRect = mp_user_to_osx_screen_rect(frameRect);
-		NSRect frame = NSMakeRect(nativeRect.x, nativeRect.y, nativeRect.w, nativeRect.h);
-		[windowData->osx.nsWindow setFrame:frame display:YES];
-
-		mp_window_update_rect_cache(windowData);
-		NSRect contentRect = [[windowData->osx.nsWindow contentView] frame];
-	}
 }}
 
-void mp_window_set_frame_size(mp_window window, int width, int height)
-{
-	mp_rect frame = mp_window_get_frame_rect(window);
-	frame.w = width;
-	frame.h = height;
-	mp_window_set_frame_rect(window, frame);
-}
+void mp_window_set_content_rect(mp_window window, mp_rect rect)
+{@autoreleasepool{
 
-void mp_window_set_content_size(mp_window window, int width, int height)
-{
 	mp_window_data* windowData = mp_window_ptr_from_handle(window);
 	if(windowData)
 	{
-		mp_rect frame = windowData->frameRect;
-		mp_rect content = mp_window_content_rect_for_frame_rect(frame, windowData->style);
-		content.w = width;
-		content.h = height;
-		frame = mp_window_frame_rect_for_content_rect(content, windowData->style);
-		mp_window_set_frame_rect(window, frame);
+		NSScreen* screen = [windowData->osx.nsWindow screen];
+		NSRect contentRect = {
+			rect.x,
+			screen.frame.size.height - rect.y - rect.h,
+			rect.w,
+			rect.h
+		};
+
+		NSRect frameRect = [windowData->osx.nsWindow frameRectForContentRect: contentRect];
+		[windowData->osx.nsWindow setFrame:frameRect display:YES];
 	}
-}
+}}
 
 //--------------------------------------------------------------------
 // platform surface
@@ -1678,26 +1602,13 @@ vec2 mg_osx_surface_contents_scaling(mg_surface_data* surface)
 	return(res);
 }}
 
-mp_rect mg_osx_surface_get_frame(mg_surface_data* surface)
+vec2 mg_osx_surface_get_size(mg_surface_data* surface)
 {@autoreleasepool{
-	CGRect frame = surface->layer.caLayer.frame;
-	mp_rect res = {frame.origin.x,
-	               frame.origin.y,
-	               frame.size.width,
-	               frame.size.height};
+	CGRect bounds = surface->layer.caLayer.bounds;
+	vec2 res = {bounds.size.width, bounds.size.height};
 	return(res);
 }}
 
-void mg_osx_surface_set_frame(mg_surface_data* surface, mp_rect frame)
-{@autoreleasepool{
-	CGRect cgFrame = {{frame.x, frame.y}, {frame.w, frame.h}};
-
-	[CATransaction begin];
-	[CATransaction setDisableActions:YES];
-	[surface->layer.caLayer setFrame: cgFrame];
-	[CATransaction commit];
-}}
-
 bool mg_osx_surface_get_hidden(mg_surface_data* surface)
 {@autoreleasepool{
 	return([surface->layer.caLayer isHidden]);
@@ -1721,8 +1632,7 @@ void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window
 
 	surface->nativeLayer = mg_osx_surface_native_layer;
 	surface->contentsScaling = mg_osx_surface_contents_scaling;
-	surface->getFrame = mg_osx_surface_get_frame;
-	surface->setFrame = mg_osx_surface_set_frame;
+	surface->getSize = mg_osx_surface_get_size;
 	surface->getHidden = mg_osx_surface_get_hidden;
 	surface->setHidden = mg_osx_surface_set_hidden;
 
@@ -1734,6 +1644,8 @@ void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window
 	surface->layer.caLayer.frame = (CGRect){{0, 0}, size};
 	surface->layer.caLayer.contentsScale = window->osx.nsView.layer.contentsScale;
 
+	surface->layer.caLayer.autoresizingMask = kCALayerWidthSizable | kCALayerHeightSizable;
+
 	[window->osx.nsView.layer addSublayer: surface->layer.caLayer];
 }}
 
@@ -1758,8 +1670,7 @@ void mg_surface_init_remote(mg_surface_data* surface, u32 width, u32 height)
 
 	surface->nativeLayer = mg_osx_surface_native_layer;
 	surface->contentsScaling = mg_osx_surface_contents_scaling;
-	surface->getFrame = mg_osx_surface_get_frame;
-	surface->setFrame = mg_osx_surface_set_frame;
+	surface->getSize = mg_osx_surface_get_size;
 	surface->getHidden = mg_osx_surface_get_hidden;
 	surface->setHidden = mg_osx_surface_set_hidden;
 	surface->remoteID = mg_osx_surface_remote_id;
@@ -1786,8 +1697,7 @@ void mg_surface_init_host(mg_surface_data* surface, mp_window_data* window)
 	surface->api = MG_HOST;
 	surface->nativeLayer = mg_osx_surface_native_layer;
 	surface->contentsScaling = mg_osx_surface_contents_scaling;
-	surface->getFrame = mg_osx_surface_get_frame;
-	surface->setFrame = mg_osx_surface_set_frame;
+	surface->getSize = mg_osx_surface_get_size;
 	surface->getHidden = mg_osx_surface_get_hidden;
 	surface->setHidden = mg_osx_surface_set_hidden;
 	surface->hostConnect = mg_osx_surface_host_connect;
diff --git a/src/win32_app.c b/src/win32_app.c
index c438847..89b9f97 100644
--- a/src/win32_app.c
+++ b/src/win32_app.c
@@ -240,9 +240,9 @@ static void process_wheel_event(mp_window_data* window, f32 x, f32 y)
 	mp_event event = {0};
 	event.window = mp_window_handle_from_ptr(window);
 	event.type = MP_EVENT_MOUSE_WHEEL;
-	event.move.deltaX = x/30.0f;
-	event.move.deltaY = -y/30.0f;
-	event.move.mods = mp_get_mod_keys();
+	event.mouse.deltaX = x/30.0f;
+	event.mouse.deltaY = -y/30.0f;
+	event.mouse.mods = mp_get_mod_keys();
 
 	mp_queue_event(&event);
 }
@@ -254,26 +254,20 @@ static void win32_update_child_layers(mp_window_data* window)
 	POINT point = {0};
 	ClientToScreen(window->win32.hWnd, &point);
 
-	int w = clientRect.right - clientRect.left;
-	int h = clientRect.bottom - clientRect.top;
+	int clientWidth = (clientRect.right - clientRect.left);
+	int clientHeight = (clientRect.bottom - clientRect.top);
 
 	HWND insertAfter = window->win32.hWnd;
 
 	for_list(&window->win32.layers, layer, mp_layer, listElt)
 	{
-		mp_rect clipped = {0};
-		clipped.x = Clamp(layer->frame.x, 0, w);
-		clipped.y = Clamp(layer->frame.y, 0, h);
-		clipped.w = Clamp(layer->frame.w, 0, w - layer->frame.x);
-		clipped.h = Clamp(layer->frame.h, 0, h - layer->frame.y);
-
 		SetWindowPos(layer->hWnd,
-		             insertAfter,
-		             point.x + clipped.x,
-		             point.y + clipped.y,
-		             clipped.w,
-		             clipped.h,
-		             SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOZORDER);
+			     	insertAfter,
+			     	point.x,
+			     	point.y,
+			     	clientWidth,
+			     	clientHeight,
+		            SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOZORDER);
 
 		insertAfter = layer->hWnd;
 	}
@@ -321,30 +315,17 @@ LRESULT WinProc(HWND windowHandle, UINT message, WPARAM wParam, LPARAM lParam)
 		} break;
 
 		case WM_SIZING:
-		{
-			//TODO: take dpi into account
-
-			RECT* rect = (RECT*)lParam;
-
-			mp_event event = {0};
-			event.window = mp_window_handle_from_ptr(mpWindow);
-			event.type = MP_EVENT_WINDOW_RESIZE;
-			event.frame.rect = (mp_rect){rect->left, rect->bottom, rect->bottom - rect->top, rect->right - rect->left};
-			mp_queue_event(&event);
-
-			win32_update_child_layers(mpWindow);
-		} break;
-
 		case WM_MOVING:
 		{
-			//TODO: take dpi into account
-
 			RECT* rect = (RECT*)lParam;
 
 			mp_event event = {0};
+			event.type = message == WM_SIZING ? MP_EVENT_WINDOW_RESIZE : MP_EVENT_WINDOW_MOVE;
 			event.window = mp_window_handle_from_ptr(mpWindow);
-			event.type = MP_EVENT_WINDOW_MOVE;
-			event.frame.rect = (mp_rect){rect->left, rect->bottom, rect->bottom - rect->top, rect->right - rect->left};
+
+			event.move.frame = mp_window_get_frame_rect(event.window);
+			event.move.content = mp_window_get_content_rect(event.window);
+
 			mp_queue_event(&event);
 
 			win32_update_child_layers(mpWindow);
@@ -429,15 +410,15 @@ LRESULT WinProc(HWND windowHandle, UINT message, WPARAM wParam, LPARAM lParam)
 			mp_event event = {0};
 			event.window = mp_window_handle_from_ptr(mpWindow);
 			event.type = MP_EVENT_MOUSE_MOVE;
-			event.move.x = LOWORD(lParam) / scaling;
-			event.move.y = HIWORD(lParam) / scaling;
+			event.mouse.x = LOWORD(lParam) / scaling;
+			event.mouse.y = HIWORD(lParam) / scaling;
 
 			if(__mpApp.win32.mouseTracked || __mpApp.win32.mouseCaptureMask)
 			{
-				event.move.deltaX = event.move.x - __mpApp.win32.lastMousePos.x;
-				event.move.deltaY = event.move.y - __mpApp.win32.lastMousePos.y;
+				event.mouse.deltaX = event.mouse.x - __mpApp.win32.lastMousePos.x;
+				event.mouse.deltaY = event.mouse.y - __mpApp.win32.lastMousePos.y;
 			}
-			__mpApp.win32.lastMousePos = (vec2){event.move.x, event.move.y};
+			__mpApp.win32.lastMousePos = (vec2){event.mouse.x, event.mouse.y};
 
 			if(!__mpApp.win32.mouseTracked)
 			{
@@ -452,8 +433,8 @@ LRESULT WinProc(HWND windowHandle, UINT message, WPARAM wParam, LPARAM lParam)
 
 				mp_event enter = {.window = event.window,
 				                  .type = MP_EVENT_MOUSE_ENTER,
-				                  .move.x = event.move.x,
-				                  .move.y = event.move.y};
+				                  .mouse.x = event.mouse.x,
+				                  .mouse.y = event.mouse.y};
 				mp_queue_event(&enter);
 			}
 
@@ -599,12 +580,24 @@ mp_window mp_window_create(mp_rect rect, const char* title, mp_window_style styl
 	HMONITOR monitor = MonitorFromPoint((POINT){rect.x, rect.y}, MONITOR_DEFAULTTOPRIMARY);
 	GetDpiForMonitor(monitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY);
 
-	f32 dpiScalingX = (f32)dpiX/96.;
-	f32 dpiScalingY = (f32)dpiY/96.;
+	f32 scaleX = (f32)dpiX/96.;
+	f32 scaleY = (f32)dpiY/96.;
+
+	RECT frame = {
+		rect.x * scaleX,
+		rect.y * scaleY,
+		(rect.x + rect.w)*scaleX,
+		(rect.y + rect.h)*scaleY
+	};
+
+	DWORD winStyle = WS_OVERLAPPEDWINDOW;
+	AdjustWindowRect(&frame, winStyle, FALSE);
 
 	HWND windowHandle = CreateWindow("ApplicationWindowClass", "Test Window",
-	                                 WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
-	                                 rect.w * dpiScalingX, rect.h * dpiScalingY,
+	                                 winStyle,
+	                                 frame.left, frame.top,
+	                                 frame.right-frame.left,
+	                                 frame.bottom-frame.top,
 	                                 0, 0, windowClass.hInstance, 0);
 
 	if(!windowHandle)
@@ -808,45 +801,167 @@ void mp_window_bring_to_front(mp_window window)
 	}
 }
 
+mp_rect mp_window_get_frame_rect(mp_window window)
+{
+	mp_rect rect = {0};
+	mp_window_data* windowData = mp_window_ptr_from_handle(window);
+	if(windowData)
+	{
+		//NOTE: GetWindowRect() includes the drop shadow, which we don't want, so we call
+		//      DwmGetWindowAttribute() instead.
+		//      Note that contrary to what the GetWindowRect() docs suggests when mentionning
+		//      this, DwmGetWindowAttributes() _does_ seem to adjust for DPI.
+		u32 dpi = GetDpiForWindow(windowData->win32.hWnd);
+		f32 scale = (float)dpi/96.;
+
+		RECT frame;
+		HRESULT res = DwmGetWindowAttribute(windowData->win32.hWnd,
+		                                    DWMWA_EXTENDED_FRAME_BOUNDS,
+		                                    &frame,
+		                                    sizeof(RECT));
+		if(res == S_OK)
+		{
+			rect = (mp_rect){
+				frame.left / scale,
+				frame.top / scale,
+				(frame.right - frame.left)/scale,
+				(frame.bottom - frame.top)/scale};
+		}
+	}
+	return(rect);
+}
+
+mp_rect win32_get_drop_shadow_offsets(HWND hWnd)
+{
+	RECT frameIncludingShadow;
+	RECT frameExcludingShadow;
+
+	GetWindowRect(hWnd, &frameIncludingShadow);
+	DwmGetWindowAttribute(hWnd,
+	                      DWMWA_EXTENDED_FRAME_BOUNDS,
+	                      &frameExcludingShadow,
+	                      sizeof(RECT));
+
+	mp_rect extents = {
+		.x = frameIncludingShadow.left - frameExcludingShadow.left,
+		.y = frameIncludingShadow.top - frameExcludingShadow.top,
+		.w = frameIncludingShadow.right - frameExcludingShadow.right,
+		.h = frameIncludingShadow.bottom- frameExcludingShadow.bottom
+	};
+
+	return(extents);
+}
+
+void mp_window_set_frame_rect(mp_window window, mp_rect rect)
+{
+	mp_window_data* windowData = mp_window_ptr_from_handle(window);
+	if(windowData)
+	{
+		u32 dpi = GetDpiForWindow(windowData->win32.hWnd);
+		f32 scale = (float)dpi/96.;
+
+		//NOTE compute the size of the drop shadow to add it in setwindowpos
+		mp_rect shadowOffsets = win32_get_drop_shadow_offsets(windowData->win32.hWnd);
+
+		RECT frame = {
+			rect.x * scale + shadowOffsets.x,
+			rect.y * scale + shadowOffsets.y,
+			(rect.x + rect.w)*scale + shadowOffsets.w,
+			(rect.y + rect.h)*scale + shadowOffsets.h
+		};
+
+		SetWindowPos(windowData->win32.hWnd,
+		             HWND_TOP,
+		             frame.left,
+		             frame.top,
+		             frame.right - frame.left,
+		             frame.bottom - frame.top,
+		             SWP_NOZORDER|SWP_NOACTIVATE);
+	}
+}
+
 mp_rect mp_window_get_content_rect(mp_window window)
 {
 	mp_rect rect = {0};
 	mp_window_data* windowData = mp_window_ptr_from_handle(window);
 	if(windowData)
 	{
-		RECT winRect;
-		if(GetClientRect(windowData->win32.hWnd, &winRect))
+		RECT client;
+		if(GetClientRect(windowData->win32.hWnd, &client))
 		{
 			u32 dpi = GetDpiForWindow(windowData->win32.hWnd);
 			f32 scale = (float)dpi/96.;
-			rect = (mp_rect){0, 0, (winRect.right - winRect.left)/scale, (winRect.bottom - winRect.top)/scale};
+
+			POINT origin = {0, 0};
+			ClientToScreen(windowData->win32.hWnd, &origin);
+
+			rect = (mp_rect){
+				origin.x/scale,
+				origin.y/scale,
+				(client.right - client.left)/scale,
+				(client.bottom - client.top)/scale};
 		}
 	}
 	return(rect);
 }
 
-//TODO: set content rect, center
+void mp_window_set_content_rect(mp_window window, mp_rect rect)
+{
+	mp_window_data* windowData = mp_window_ptr_from_handle(window);
+	if(windowData)
+	{
+		u32 dpi = GetDpiForWindow(windowData->win32.hWnd);
+		f32 scale = (float)dpi/96.;
+
+		RECT frame = {
+			rect.x * scale,
+			rect.y * scale,
+			(rect.x + rect.w)*scale,
+			(rect.y + rect.h)*scale};
+
+		DWORD style = GetWindowLong(windowData->win32.hWnd, GWL_STYLE);
+		BOOL menu = (GetMenu(windowData->win32.hWnd) != NULL);
+		AdjustWindowRect(&frame, style, menu);
+
+		SetWindowPos(windowData->win32.hWnd,
+		             HWND_TOP,
+		             frame.left,
+		             frame.top,
+		             frame.right - frame.left,
+		             frame.bottom - frame.top,
+		             SWP_NOZORDER|SWP_NOACTIVATE);
+	}
+}
+
 void mp_window_center(mp_window window)
 {
 	mp_window_data* windowData = mp_window_ptr_from_handle(window);
 	if(windowData)
 	{
-		RECT winRect;
-		GetWindowRect(windowData->win32.hWnd, &winRect);
 
-		HMONITOR monitor = MonitorFromPoint((POINT){winRect.left, winRect.top}, MONITOR_DEFAULTTOPRIMARY);
-		MONITORINFO monitorInfo = {.cbSize = sizeof(MONITORINFO)};
-		GetMonitorInfoW(monitor, &monitorInfo);
+		mp_rect frame = mp_window_get_frame_rect(window);
 
-		int monW = monitorInfo.rcWork.right - monitorInfo.rcWork.left;
-		int monH = monitorInfo.rcWork.bottom - monitorInfo.rcWork.top;
-		int winW = winRect.right - winRect.left;
-		int winH = winRect.bottom - winRect.top;
+		HMONITOR monitor = MonitorFromWindow(windowData->win32.hWnd, MONITOR_DEFAULTTOPRIMARY);
+		if(monitor)
+		{
+			MONITORINFO monitorInfo = {.cbSize = sizeof(MONITORINFO)};
+			GetMonitorInfoW(monitor, &monitorInfo);
 
-		int winX = 0.5*(monW-winW);
-		int winY = 0.5*(monW-winW);
+			int dpiX, dpiY;
+			GetDpiForMonitor(monitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY);
+			f32 scaleX = dpiX/96.;
+			f32 scaleY = dpiY/96.;
 
-		SetWindowPos(windowData->win32.hWnd, NULL, winX, winY, winW, winH, SWP_NOZORDER|SWP_NOACTIVATE);
+			f32 monX = monitorInfo.rcWork.left/scaleX;
+			f32 monY = monitorInfo.rcWork.top/scaleY;
+			f32 monW = (monitorInfo.rcWork.right - monitorInfo.rcWork.left)/scaleX;
+			f32 monH = (monitorInfo.rcWork.bottom - monitorInfo.rcWork.top)/scaleY;
+
+			frame.x = monX + 0.5*(monW - frame.w);
+			frame.y = monY + 0.5*(monH - frame.h);
+
+			mp_window_set_frame_rect(window, frame);
+		}
 	}
 }
 
@@ -935,37 +1050,17 @@ vec2 mg_win32_surface_contents_scaling(mg_surface_data* surface)
 	return(contentsScaling);
 }
 
-mp_rect mg_win32_surface_get_frame(mg_surface_data* surface)
+vec2 mg_win32_surface_get_size(mg_surface_data* surface)
 {
-	RECT rect = {0};
-	GetClientRect(surface->layer.hWnd, &rect);
-
-	vec2 scale = mg_win32_surface_contents_scaling(surface);
-
-	mp_rect res = {rect.left/scale.x,
-	               rect.bottom/scale.y,
-	               (rect.right - rect.left)/scale.x,
-	               (rect.bottom - rect.top)/scale.y};
-	return(res);
-}
-
-void mg_win32_surface_set_frame(mg_surface_data* surface, mp_rect frame)
-{
-	HWND parent = GetParent(surface->layer.hWnd);
-	RECT parentContentRect;
-
-	GetClientRect(parent, &parentContentRect);
-	int parentHeight = 	parentContentRect.bottom - parentContentRect.top;
-
-	vec2 scale = mg_win32_surface_contents_scaling(surface);
-
-	SetWindowPos(surface->layer.hWnd,
-			     HWND_TOP,
-			     frame.x * scale.x,
-			     parentHeight - (frame.y + frame.h) * scale.y,
-			     frame.w * scale.x,
-			     frame.h * scale.y,
-			     SWP_NOACTIVATE | SWP_NOZORDER);
+	vec2 size = {0};
+	RECT rect;
+	if(GetClientRect(surface->layer.hWnd, &rect))
+	{
+		u32 dpi = GetDpiForWindow(surface->layer.hWnd);
+		f32 scale = (float)dpi/96.;
+		size = (vec2){(rect.right - rect.left)/scale, (rect.bottom - rect.top)/scale};
+	}
+	return(size);
 }
 
 bool mg_win32_surface_get_hidden(mg_surface_data* surface)
@@ -1030,8 +1125,7 @@ LRESULT LayerWinProc(HWND windowHandle, UINT message, WPARAM wParam, LPARAM lPar
 void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window)
 {
 	surface->contentsScaling = mg_win32_surface_contents_scaling;
-	surface->getFrame = mg_win32_surface_get_frame;
-	surface->setFrame = mg_win32_surface_set_frame;
+	surface->getSize = mg_win32_surface_get_size;
 	surface->getHidden = mg_win32_surface_get_hidden;
 	surface->setHidden = mg_win32_surface_set_hidden;
 	surface->nativeLayer = mg_win32_surface_native_layer;
@@ -1050,12 +1144,12 @@ void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window
 	POINT point = {0};
 	ClientToScreen(window->win32.hWnd, &point);
 
-	int width = parentRect.right - parentRect.left;
-	int height = parentRect.bottom - parentRect.top;
+	int clientWidth = parentRect.right - parentRect.left;
+	int clientHeight = parentRect.bottom - parentRect.top;
 
 	surface->layer.hWnd = CreateWindow("layer_window_class", "layer",
 	                                     WS_POPUP | WS_VISIBLE,
-	                                     point.x, point.y, width, height,
+	                                     point.x, point.y, clientWidth, clientHeight,
 	                                     window->win32.hWnd,
 	                                     0,
 	                                     layerWindowClass.hInstance,
@@ -1076,7 +1170,6 @@ void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window
 		log_error("couldn't enable blur behind\n");
 	}
 
-	surface->layer.frame = (mp_rect){0, 0, width, height};
 	surface->layer.parent = window;
 	list_append(&window->win32.layers, &surface->layer.listElt);
 }
@@ -1084,8 +1177,7 @@ void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window
 void mg_surface_init_remote(mg_surface_data* surface, u32 width, u32 height)
 {
 	surface->contentsScaling = mg_win32_surface_contents_scaling;
-	surface->getFrame = mg_win32_surface_get_frame;
-	surface->setFrame = mg_win32_surface_set_frame;
+	surface->getSize = mg_win32_surface_get_size;
 	surface->getHidden = mg_win32_surface_get_hidden;
 	surface->setHidden = mg_win32_surface_set_hidden;
 	surface->nativeLayer = mg_win32_surface_native_layer;
diff --git a/src/win32_app.h b/src/win32_app.h
index e6783e0..2eb0e44 100644
--- a/src/win32_app.h
+++ b/src/win32_app.h
@@ -28,7 +28,6 @@ typedef struct mp_layer
 {
 	mp_window_data* parent;
 	list_elt listElt;
-	mp_rect frame;
 	HWND hWnd;
 } mp_layer;