Metal rendering works; high dpi rendering works; fix sokol_gfx_ext to work with metal without SDL

source/engine/debug/debugdraw.c

@@ -554,8 +554,8 @@ void draw_grid(float width, float span, struct rgba color)
   float ubo[4];
   ubo[0] = offset.x;
   ubo[1] = offset.y;
-  ubo[2] = mainwin.width;
-  ubo[3] = mainwin.height;
+  ubo[2] = mainwin.rwidth;
+  ubo[3] = mainwin.rheight;
 
   sg_apply_pipeline(grid_pipe);
   sg_apply_bindings(&grid_bind);

source/engine/nuke.c

@@ -1,17 +1,14 @@
 #include "nuke.h"
 
 #ifndef NO_EDITOR
-
-#define STBTT_STATIC
-
 #include "config.h"
 
-#include "sokol/sokol_gfx.h"
-
+#define NK_PRIVATE
+#define STB_IMAGE_STATIC
+#define STBTT_STATIC
 #define NK_IMPLEMENTATION
-#define SOKOL_NUKLEAR_IMPL
 #include "nuklear.h"
-#include "sokol/sokol_app.h"
+#define SOKOL_NUKLEAR_IMPL
 #include "sokol/sokol_nuklear.h"
 
 #include <stdarg.h>
@@ -27,7 +24,8 @@ struct nk_context *ctx;
 
 void nuke_init(struct window *win) {
   snk_setup(&(snk_desc_t){
-    .no_default_font = false
+    .no_default_font = false,
+    .dpi_scale = sapp_dpi_scale(),
   });
 
   ctx = snk_new_frame();
@@ -58,7 +56,7 @@ void nuke_start() {
 }
 
 void nuke_end() {
-  snk_render(mainwin.width,mainwin.height);
+  snk_render(sapp_width(), sapp_height());
 }
 
 int nuke_begin(const char *lbl, struct rect rect) {

source/engine/nuke.h

@@ -13,9 +13,10 @@
 #define NK_INCLUDE_DEFAULT_ALLOCATOR
 #define NK_INCLUDE_STANDARD_IO
 #define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
-#include "nuklear.h"
-#include "sokol/sokol_app.h"
+
 #include "sokol/sokol_gfx.h"
+#include "sokol/sokol_app.h"
+#include "nuklear.h"
 #include "sokol/sokol_nuklear.h"
 
 struct window;

source/engine/render.c

@@ -16,22 +16,15 @@
 #include "resources.h"
 #include "yugine.h"
 #include "sokol/sokol_app.h"
-
-#define SOKOL_GLUE_IMPL
 #include "sokol/sokol_glue.h"
 
 #include "crt.sglsl.h"
 #include "box.sglsl.h"
 #include "shadow.sglsl.h"
 
-#define SOKOL_TRACE_HOOKS
-#define SOKOL_GFX_IMPL
 #include "sokol/sokol_gfx.h"
-
-#define SOKOL_GFX_EXT_IMPL
 #include "sokol/sokol_gfx_ext.h"
 
-#define MSF_GIF_IMPL
 #include "msf_gif.h"
 
 static struct {
@@ -77,6 +70,7 @@ void gif_rec_start(int w, int h, int cpf, int bitdepth)
     .render_target = true,
     .width = gif.w,
     .height = gif.h,
+    .pixel_format = SG_PIXELFORMAT_RGBA8
   });
 
   sg_gif.depth = sg_make_image(&(sg_image_desc){
@@ -251,7 +245,8 @@ void render_init() {
         [0].format = SG_VERTEXFORMAT_FLOAT2,
 	[1].format = SG_VERTEXFORMAT_FLOAT2
       }
-    }
+    },
+    .colors[0].pixel_format = SG_PIXELFORMAT_RGBA8
   });
 
   crt_post.pipe = sg_make_pipeline(&(sg_pipeline_desc){
@@ -282,6 +277,7 @@ void render_init() {
     .depth_stencil_attachment.image = crt_post.depth_img,
   });
 
+#if defined SOKOL_GLCORE33 || defined SOKOL_GLES3
   float crt_quad[] = {
     -1, 1, 0, 1,
     -1, -1, 0, 0,
@@ -290,6 +286,31 @@ void render_init() {
     1, -1, 1, 0,
     1, 1, 1, 1
   };
+#else
+  float crt_quad[] = {
+    -1, 1, 0, 0,
+    -1, -1, 0, 1,
+    1, -1, 1, 1,
+    -1, 1, 0, 0,
+    1, -1, 1, 1,
+    1, 1, 1, 0
+  };
+#endif
+  float gif_quad[] = {
+    -1, 1, 0, 1,
+    -1, -1, 0, 0,
+    1, -1, 1, 0,
+    -1, 1, 0, 1,
+    1, -1, 1, 0,
+    1, 1, 1, 1
+  };
+
+  sg_gif.bind.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
+    .size = sizeof(gif_quad),
+    .data = gif_quad,
+  });
+  sg_gif.bind.fs.images[0] = crt_post.img;
+  sg_gif.bind.fs.samplers[0] = sg_make_sampler(&(sg_sampler_desc){});
 
   crt_post.bind.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
     .size = sizeof(crt_quad),
@@ -364,7 +385,8 @@ void render_winsize()
     .depth_stencil_attachment.image = crt_post.depth_img,
   });
 
-  crt_post.bind.fs.images[0] = crt_post.img;  
+  crt_post.bind.fs.images[0] = crt_post.img;
+  sg_gif.bind.fs.images[0] = crt_post.img;
 }
 
 static cpBody *camera = NULL;
@@ -384,15 +406,18 @@ HMM_Vec2 world2screen(HMM_Vec2 pos)
 {
   pos = HMM_SubV2(pos, HMM_V2(cam_pos().x, cam_pos().y));
   pos = HMM_ScaleV2(pos, 1.0/zoom);
-  pos = HMM_AddV2(pos, HMM_V2(mainwin.width/2.0, mainwin.height/2.0));
+  pos = HMM_AddV2(pos, HMM_V2(mainwin.rwidth/2.0, mainwin.rheight/2.0));
   return pos;
 }
 
 HMM_Vec2 screen2world(HMM_Vec2 pos)
 {
-  pos = HMM_AddV2(pos, HMM_V2(mainwin.width/2.0, mainwin.height/2.0));
-  pos = HMM_MulV2(pos, HMM_V2(zoom,zoom));
-  return HMM_AddV2(pos, HMM_V2(cam_pos().x, cam_pos().y));
+  pos.Y *= -1;
+  pos = HMM_ScaleV2(pos, 1/mainwin.dpi);
+  pos = HMM_AddV2(pos, HMM_V2(-mainwin.rwidth/2.0, mainwin.rheight/2.0));
+  pos = HMM_ScaleV2(pos, zoom);
+  pos = HMM_AddV2(pos, HMM_V2(cam_pos().x, cam_pos().y));
+  return pos;
 }
 
 HMM_Mat4 projection = {0.f};
@@ -405,14 +430,23 @@ void full_2d_pass(struct window *window)
   //////////// 2D projection
   cpVect pos = cam_pos();
 
-  projection = HMM_Orthographic_RH_NO(
-             pos.x - zoom * window->width / 2,
-             pos.x + zoom * window->width / 2,
-             pos.y - zoom * window->height / 2,
-             pos.y + zoom * window->height / 2, -1.f, 1.f);
+#if defined SOKOL_GLCORE33 || defined SOKOL_GLES3
+  projection = HMM_Orthographic_RH_ZO(
+             pos.x - zoom * window->rwidth / 2,
+             pos.x + zoom * window->rwidth / 2,
+             pos.y + zoom * window->rheight / 2,
+             pos.y - zoom * window->rheight / 2, -1.f, 1.f);
 
-  hudproj = HMM_Orthographic_RH_NO(0, window->width, 0, window->height, -1.f, 1.f);
+  hudproj = HMM_Orthographic_RH_ZO(0, window->width, window->height, 0, -1.f, 1.f);
+#else
+  projection = HMM_Orthographic_LH_ZO(
+             pos.x - zoom * window->rwidth / 2,
+             pos.x + zoom * window->rwidth / 2,
+             pos.y - zoom * window->rheight / 2,
+             pos.y + zoom * window->rheight / 2, -1.f, 1.f);
 
+  hudproj = HMM_Orthographic_LH_ZO(0, window->rwidth, 0, window->rheight, -1.f, 1.f);
+#endif
 
   sprite_draw_all();
   call_draw();
@@ -473,7 +507,7 @@ void openglRender(struct window *window) {
   if (gif.rec && (appTime - gif.timer) > gif.spf) {
     sg_begin_pass(sg_gif.pass, &pass_action);
     sg_apply_pipeline(sg_gif.pipe);
-    sg_apply_bindings(&crt_post.bind);
+    sg_apply_bindings(&sg_gif.bind);
     sg_draw(0,6,1);
     sg_end_pass();
 

source/engine/render.h

@@ -9,8 +9,7 @@
   #define SOKOL_GLCORE33
   #define SOKOL_WIN32_FORCE_MAIN
 #elif __APPLE__
-//  #define SOKOL_METAL
-  #define SOKOL_GLCORE33
+  #define SOKOL_METAL
 #endif
 
 #include "sokol/sokol_gfx.h"

source/engine/sprite.c

@@ -176,9 +176,10 @@ void sprite_initialize() {
     .layout = {
       .attrs = {
         [0].format = SG_VERTEXFORMAT_FLOAT2,
-	[1].format = SG_VERTEXFORMAT_USHORT4N,
-	[2].format = SG_VERTEXFORMAT_FLOAT2,
-	[3].format = SG_VERTEXFORMAT_UBYTE4N
+	[1].format = SG_VERTEXFORMAT_FLOAT2,
+	[2].format = SG_VERTEXFORMAT_USHORT4N,
+	[3].format = SG_VERTEXFORMAT_FLOAT2,
+	[4].format = SG_VERTEXFORMAT_UBYTE4N
       }},
     .primitive_type = SG_PRIMITIVETYPE_TRIANGLE_STRIP,
   });

source/engine/thirdparty/sokol/sokol_gfx_ext.h

@@ -292,13 +292,7 @@ static void _sg_metal_encode_texture_pixels(int x, int y, int w, int h, bool ori
     [cmd_buffer waitUntilCompleted];
 
     MTLRegion mtl_region = MTLRegionMake2D(0, 0, w, h);
-    void* temp_pixels = malloc(w * 4 * h);
-    SOKOL_ASSERT(temp_pixels);
-    [mtl_dst_texture getBytes:temp_pixels bytesPerRow:w * 4 fromRegion:mtl_region mipmapLevel:0];
-    //    int res = SDL_ConvertPixels(w, h, _sg_metal_texture_format_to_sdl_pixel_format(mtl_dst_texture_desc.pixelFormat), temp_pixels, w * 4, SDL_PIXELFORMAT_RGBA32, pixels, w * 4);
-    free(temp_pixels);
-    //    SOKOL_ASSERT(res == 0);
-    //    _SOKOL_UNUSED(res);
+    [mtl_dst_texture getBytes:pixels bytesPerRow:w * 4 fromRegion:mtl_region mipmapLevel:0];
 }
 
 static void _sg_metal_query_image_pixels(_sg_image_t* img, void* pixels) {

source/engine/window.c

@@ -24,8 +24,12 @@ struct Texture *icon = NULL;
 
 void window_resize(int width, int height)
 {
-  mainwin.width = width;
-  mainwin.height = height;
+  mainwin.dpi = sapp_dpi_scale();
+  mainwin.width = sapp_width();
+  mainwin.height = sapp_height();
+  mainwin.rwidth = mainwin.width/mainwin.dpi;
+  mainwin.rheight = mainwin.height/mainwin.dpi;
+  
   render_winsize();
 
   JSValue vals[2] = { int2js(width), int2js(height) };

source/engine/window.h

@@ -10,6 +10,9 @@ struct window {
   int id;
   int width;
   int height;
+  double dpi;
+  int rwidth;
+  int rheight;
   bool render;
   bool mouseFocus;
   bool keyboardFocus;

source/engine/yugine.c

@@ -38,34 +38,16 @@
 #include "nuke.h"
 #endif
 
-#define SOKOL_TRACE_HOOKS
-#define SOKOL_IMPL
+#include "render.h"
 
 #include "sokol/sokol_app.h"
 #include "sokol/sokol_audio.h"
 #include "sokol/sokol_time.h"
 #include "sokol/sokol_args.h"
-
-#define STB_DS_IMPLEMENTATION
 #include <stb_ds.h>
-
-#define STB_TRUETYPE_IMPLEMENTATION
-#define STB_TRUETYPE_NO_STDIO
 #include <stb_truetype.h>
-
-#define STB_IMAGE_IMPLEMENTATION
-#define STBI_FAILURE_USERMSG
-#define STBI_NO_STDIO
-#ifdef __TINYC__
-#define STBI_NO_SIMD
-#endif
 #include "stb_image.h"
-
-#define STB_IMAGE_WRITE_IMPLEMENTATION
-#define STBIR_DEFAULT_FILTER_DOWNSAMPLE STBIR_FILTER_BOX
 #include "stb_image_write.h"
-
-#define PL_MPEG_IMPLEMENTATION
 #include <pl_mpeg.h>
 
 #include "debug.h"
@@ -151,7 +133,7 @@ static char **args;
 
 void c_init() {
   render_init();
-
+  window_resize(sapp_width(), sapp_height());
   script_evalf("initialize();");
 }
 
@@ -207,7 +189,7 @@ void c_frame()
 }
 
 void c_clean() {
-  gif_rec_end("crash.gif");
+  gif_rec_end("out.gif");
 };
 
 void c_event(const sapp_event *e)
@@ -309,7 +291,7 @@ static sapp_desc start_desc = {
     .high_dpi = 0,
     .sample_count = 1,
     .fullscreen = 1,
-    .window_title = "Yugine",
+    .window_title = "Primum Machinam",
     .enable_clipboard = false,
     .clipboard_size = 0,
     .enable_dragndrop = true,