workbench: initial impl wip

render: supporting changes
ui: new methods

MAKE.bat

@@ -396,7 +396,7 @@ set run=no
     if "%1"=="extras"   set "extras=yes" && set "hello=no" && goto loop
     if "%1"=="noeditor" set "editor=no" && goto loop
     if "%1"=="hello"    set "hello=yes" && goto loop
-    if "%1"=="editor"   set "editor=yes" && set "hello=no"&& goto loop
+    if "%1"=="editor"   set "editor=yes" && set "v4k=no" && set "hello=no"&& goto loop
     if "%1"=="run"      set "run=yes" && goto loop
     if "%1"=="all"      set "v4k=yes" && set "demos=yes" && set "extras=yes" && set "editor=yes" && set "hello=yes" && goto loop
 
@@ -600,9 +600,17 @@ if "!vis!"=="yes" echo !cc! engine\v4k.c !export! !args! ^&^& if "!dll!"=="dll"
 rem editor
 if "!editor!"=="yes" (
 set edit=-DCOOK_ON_DEMAND -DUI_LESSER_SPACING -DUI_ICONS_SMALL
-if "!vis!"=="yes" echo !cc! !o! editor.exe  tools\editor\editor.c  !edit! !import! !args!
+rem if "!vis!"=="yes" echo !cc! !o! editor.exe  tools\editor\editor.c  !edit! !import! !args!
-!echo! editor       && !cc! !o! editor.exe  tools\editor\editor.c  !edit! !import! !args! || set rc=1
+rem !echo! editor       && !cc! !o! editor.exe  tools\editor\editor.c  !edit! !import! !args! || set rc=1
-!echo! editor2      && !cc! !o! editor2.exe tools\editor\editor2.c !edit!          !args! || set rc=1
+rem !echo! editor2      && !cc! !o! editor2.exe tools\editor\editor2.c !edit!          !args! || set rc=1
+
+set "plugins="
+for %%f in ("workbench\plugins\*.c") do (
+    echo plugin: %%~nf.c    
+    set "plugins=!plugins! workbench\plugins\%%~nf.c"
+)
+
+!echo! workbench && !cc! !o! workbench.exe workbench\workbench.c !plugins! -Iworkbench  !edit!          !args! || set rc=1
 )
 
 rem demos

demos/00-demo.c

@@ -180,7 +180,7 @@ int main() {
         }
 
         // post-fxs end here
-        fx_end();
+        fx_end(0);
 
         // font demo
         do_once font_scales(FONT_FACE1, 48, 24, 18, 12, 9, 6);

demos/01-sprite.c

@@ -124,7 +124,7 @@ int main() {
             );
 
         // post-fxs end here
-        fx_end();
+        fx_end(0);
 
         // ui
         if( ui_panel("Audio", 0)) {

demos/02-ddraw.c

@@ -88,7 +88,7 @@ int main() {
                 collide_demo();
             }
 
-        fx_end();
+        fx_end(0);
 
         // ui
         if( ui_panel("App", 0) ) {

demos/03-anims.c

@@ -86,7 +86,7 @@ int main() {
                 }
             }
 
-        fx_end();
+        fx_end(0);
 
         if( ui_panel("Animation", 0) ) {
             if( ui_bool("Show aabb", &do_showaabb) );

demos/05-scene.c

@@ -125,7 +125,7 @@ int main() {
         }
 
         // post-fxs end here
-        fx_end();
+        fx_end(0);
 
         // queue ui
         if( ui_panel("Camera", 0)) {

demos/06-controller.c

@@ -69,7 +69,7 @@ int main() {
             model_render(witch, cam.proj, cam.view, witch.pivot, 0);
 
         // render end (postfx)
-        fx_end();
+        fx_end(0);
 
         // input controllers
 

demos/99-cubemap.c

@@ -43,7 +43,7 @@ int main(int argc, char** argv) {
             initialized = 1;
             sky = skybox(flag("--mie") ? 0 : SKY_DIRS[SKY_DIR], 0);
             mdl = model(OBJ_MDLS[OBJ_MDL], 0);
-            // rotation44(mdl.pivot, 0, 1,0,0); // @fixme: -90,1,0,0 -> should we rotate SHMs as well? compensate rotation in shader?
+            rotation44(mdl.pivot, 0, 1,0,0); // @fixme: -90,1,0,0 -> should we rotate SHMs as well? compensate rotation in shader?
         }
 
         // fps camera

demos/99-dung.c

@@ -169,7 +169,7 @@ int main() {
             skybox_render(&sky, cam.proj, cam.view);
 
             draw_world();
-        fx_end();
+        fx_end(0);
     }
 
     return 0;

demos/99-pbr.c

@@ -577,7 +577,7 @@ int main( int argc, const char *argv[] ) {
             glDepthFunc( GL_LESS );
         }
 
-        fx_end();
+        fx_end(0);
 
         // ---------------------------------------------------------------------
         // UI

demos/99-sponza.c

@@ -70,6 +70,6 @@ int main() {
         model_render(sponza, cam.proj, cam.view, M, 0);
 
         // post-fxs end here
-        fx_end();
+        fx_end(0);
     }
 }

demos/99-sprite.c

@@ -191,7 +191,7 @@ int main(int argc, char **argv) {
             }
 
         // post-fxs end here
-        fx_end();
+        fx_end(0);
 
         // draw pixel-art hud, 16x16 ui element, scaled and positioned in resolution-independant way
         {

demos/art/meshes/cube.obj

@@ -1,40 +0,0 @@
-# Blender v2.64 (sub 0) OBJ File: ''
-# www.blender.org
-mtllib data/cube.mtl
-o Cube
-v 1.000000 -1.000000 -1.000000
-v 1.000000 -1.000000 1.000000
-v -1.000000 -1.000000 1.000000
-v -1.000000 -1.000000 -1.000000
-v 1.000000 1.000000 -0.999999
-v 0.999999 1.000000 1.000001
-v -1.000000 1.000000 1.000000
-v -1.000000 1.000000 -1.000000
-vt 0.666667 0.500000
-vt 0.666667 1.000000
-vt 0.333333 1.000000
-vt 1.000000 0.500000
-vt 1.000000 1.000000
-vt 0.998981 0.000000
-vt 0.666667 0.001019
-vt 0.333333 0.500000
-vt 0.333333 0.001020
-vt 0.000000 1.000000
-vt 0.333333 0.000000
-vt 0.000000 0.500000
-vt 0.665647 0.000000
-vt 0.000000 0.001020
-usemtl Material
-s off
-f 1/1 2/2 3/3
-f 5/4 8/5 6/1
-f 1/6 5/4 2/7
-f 2/8 6/9 3/1
-f 3/8 7/3 8/10
-f 5/11 1/8 4/12
-f 4/8 1/1 3/3
-f 8/5 7/2 6/1
-f 5/4 6/1 2/7
-f 6/9 7/13 3/1
-f 4/12 3/8 8/10
-f 8/14 5/11 4/12

demos/html5/demo_collide.c

@@ -584,7 +584,7 @@ void game_loop(void *userdata) {
 
     //fx_begin();
     //ddraw_flush();
-    //fx_end();
+    //fx_end(0);
 
     if( ui_panel("Vis", 0) ) {
         ui_bool("Skybox render", &draw_skybox);

engine/art/meshes/cube.mtl

@@ -0,0 +1,12 @@
+# Blender 3.6.2 MTL File: 'None'
+# www.blender.org
+
+newmtl Material.001
+Ns 0.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.800000 0.800000 0.800000
+Ks 0.000000 0.000000 0.000000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 1

engine/art/meshes/cube.obj

@@ -0,0 +1,49 @@
+# Blender 3.6.2
+# www.blender.org
+mtllib cube.mtl
+o Cube
+v 1.000000 -1.000000 -1.000000
+v 1.000000 -1.000000 1.000000
+v -1.000000 -1.000000 1.000000
+v -1.000000 -1.000000 -1.000000
+v 1.000000 1.000000 -0.999999
+v 0.999999 1.000000 1.000001
+v -1.000000 1.000000 1.000000
+v -1.000000 1.000000 -1.000000
+vn -0.0000 -1.0000 -0.0000
+vn -0.0000 1.0000 -0.0000
+vn 1.0000 -0.0000 -0.0000
+vn -0.0000 -0.0000 1.0000
+vn -1.0000 -0.0000 -0.0000
+vn -0.0000 -0.0000 -1.0000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 1.000000 0.000001
+vt 0.000000 0.000000
+vt 0.999999 1.000000
+vt 0.000000 0.000000
+vt 1.000000 0.000001
+vt 0.000000 1.000000
+vt 1.000000 0.000000
+vt 0.999999 1.000000
+vt 0.000000 0.000000
+vt 1.000000 1.000000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+s 0
+usemtl Material.001
+f 1/1/1 2/2/1 3/3/1
+f 5/4/2 8/5/2 6/6/2
+f 1/7/3 5/8/3 2/9/3
+f 2/10/4 6/11/4 3/12/4
+f 3/9/5 7/13/5 8/14/5
+f 5/15/6 1/10/6 4/12/6
+f 4/5/1 1/1/1 3/3/1
+f 8/5/2 7/3/2 6/6/2
+f 5/8/3 6/16/3 2/9/3
+f 6/11/4 7/17/4 3/12/4
+f 4/7/5 3/9/5 8/14/5
+f 8/17/6 5/15/6 4/12/6

engine/bind/v4k.lua

@@ -1185,6 +1185,7 @@ ffi.cdef([[
 //lcpp INF [0000] vec3: macro name but used as C declaration in:vec3* in_vertex3;
 //lcpp INF [0000] vec3: macro name but used as C declaration in:vec3* out_vertex3;
 //lcpp INF [0000] vec4: macro name but used as C declaration in:vec4   color;
+//lcpp INF [0000] vec2i: macro name but used as C declaration in:vec2i dims;
 //lcpp INF [0000] vec3: macro name but used as C declaration in:vec3       pose;
 //lcpp INF [0000] vec3: macro name but used as C declaration in:API vec3     pose(bool forward, float curframe, int minframe, int maxframe, bool loop, float *opt_retframe);
 //lcpp INF [0000] vec3: macro name but used as C declaration in:STATIC vec3     pose(bool forward, float curframe, int minframe, int maxframe, bool loop, float *opt_retframe);
@@ -1391,6 +1392,9 @@ ffi.cdef([[
 //lcpp INF [0000] vec3: macro name but used as C declaration in:API void object_scale(object_t *obj, vec3 sca);
 //lcpp INF [0000] vec3: macro name but used as C declaration in:STATIC void object_scale(object_t *obj, vec3 sca);
 //lcpp INF [0000] vec3: macro name but used as C declaration in: void object_scale(object_t *obj, vec3 sca);
+//lcpp INF [0000] vec2: macro name but used as C declaration in:API vec2 ui_get_dims();
+//lcpp INF [0000] vec2: macro name but used as C declaration in:STATIC vec2 ui_get_dims();
+//lcpp INF [0000] vec2: macro name but used as C declaration in: vec2 ui_get_dims();
 //lcpp INF [0000] vec2: macro name but used as C declaration in:API vec2     window_canvas();
 //lcpp INF [0000] vec2: macro name but used as C declaration in:STATIC vec2     window_canvas();
 //lcpp INF [0000] vec2: macro name but used as C declaration in: vec2     window_canvas();
@@ -2289,8 +2293,10 @@ float specular_shininess;
 } pbr_material_t;
  bool pbr_material(pbr_material_t *pbr, const char *material);
  void pbr_material_destroy(pbr_material_t *m);
- void  fullscreen_quad_rgb( texture_t texture_rgb, float gamma );
+ void fullscreen_quad_rgb( texture_t texture_rgb, float gamma );
- void  fullscreen_quad_ycbcr( texture_t texture_YCbCr[3], float gamma );
+ void fullscreen_quad_rgb_flipped( texture_t texture, float gamma );
+ void fullscreen_quad_ycbcr( texture_t texture_YCbCr[3], float gamma );
+ void fullscreen_quad_ycbcr_flipped( texture_t texture_YCbCr[3], float gamma );
  void sprite( texture_t texture, float position[3], float rotation , uint32_t color );
  void sprite_rect( texture_t t, vec4 rect, float zindex, vec3 pos, float tilt_deg, unsigned tint_rgba);
  void sprite_sheet( texture_t texture, float sheet[3], float position[3], float rotation, float offset[2], float scale[2], int is_additive, uint32_t rgba, int resolution_independant);
@@ -2463,6 +2469,11 @@ float  value;
 vec4   color;
 } layer[MAX_CHANNELS_PER_MATERIAL];
 } material_t;
+enum {
+SHADERTOY_FLIP_Y = 2,
+SHADERTOY_IGNORE_FBO = 4,
+SHADERTOY_IGNORE_MOUSE = 8,
+};
 typedef struct shadertoy_t {
 handle vao, program;
 int uniforms[32];
@@ -2471,7 +2482,8 @@ int frame;
 float clickx, clicky;
 uint64_t t;
 texture_t tx;
-unsigned dims;
+vec2i dims;
+int flags;
 } shadertoy_t;
  shadertoy_t  shadertoy( const char *shaderfile, unsigned flags );
  shadertoy_t* shadertoy_render( shadertoy_t *s, float delta );
@@ -2566,7 +2578,8 @@ float *pixels;
  int      fx_load(const char *file);
  int      fx_load_from_mem(const char *nameid, const char *content);
  void     fx_begin();
- void     fx_end();
+ void     fx_begin_res(int w, int h);
+ void     fx_end(handle fb);
  void     fx_enable(int pass, int enabled);
  int      fx_enabled(int pass);
  void     fx_enable_all(int enabled);
@@ -2800,6 +2813,7 @@ PANEL_OPEN = 1,
  int    ui_double(const char *label, double *value);
  int    ui_buffer(const char *label, char *buffer, int buflen);
  int    ui_string(const char *label, char **string);
+ int    ui_text_wrap(const char *label, char *text);
  int    ui_color3(const char *label, float *color3);
  int    ui_color3f(const char *label, float *color3);
  int    ui_color4(const char *label, float *color4);
@@ -2838,10 +2852,12 @@ PANEL_OPEN = 1,
  int   ui_collapse_end();
  int  ui_panel_end();
  int ui_window_end();
- int ui_show(const char *panel_or_window_title, int enabled);
+ int  ui_show(const char *panel_or_window_title, int enabled);
- int ui_visible(const char *panel_or_window_title);
+ int  ui_dims(const char *panel_or_window_title, float width, float height);
- int ui_enable();
+ int  ui_visible(const char *panel_or_window_title);
- int ui_disable();
+ int  ui_enable();
+ int  ui_disable();
+ vec2 ui_get_dims();
  int ui_has_menubar();
  int ui_menu(const char *items);
  int ui_menu_editbox(char *buf, int bufcap);

engine/joint/v4k.h

@@ -16536,8 +16536,10 @@ API void pbr_material_destroy(pbr_material_t *m);
 // -----------------------------------------------------------------------------
 // fullscreen quads
 
-API void  fullscreen_quad_rgb( texture_t texture_rgb, float gamma );
+API void fullscreen_quad_rgb( texture_t texture_rgb, float gamma );
-API void  fullscreen_quad_ycbcr( texture_t texture_YCbCr[3], float gamma );
+API void fullscreen_quad_rgb_flipped( texture_t texture, float gamma );
+API void fullscreen_quad_ycbcr( texture_t texture_YCbCr[3], float gamma );
+API void fullscreen_quad_ycbcr_flipped( texture_t texture_YCbCr[3], float gamma );
 
 // -----------------------------------------------------------------------------
 // sprites
@@ -16863,6 +16865,12 @@ typedef struct material_t {
 // -----------------------------------------------------------------------------
 // shadertoys
 
+enum {
+    SHADERTOY_FLIP_Y = 2,
+    SHADERTOY_IGNORE_FBO = 4,
+    SHADERTOY_IGNORE_MOUSE = 8,
+};
+
 typedef struct shadertoy_t {
     handle vao, program;
     int uniforms[32];
@@ -16871,7 +16879,8 @@ typedef struct shadertoy_t {
     float clickx, clicky;
     uint64_t t;
     texture_t tx;
-    unsigned dims;
+    vec2i dims;
+    int flags;
 } shadertoy_t;
 
 API shadertoy_t  shadertoy( const char *shaderfile, unsigned flags );
@@ -17006,7 +17015,8 @@ API void     viewport_clip(vec2 from, vec2 to);
 API int      fx_load(const char *file);
 API int      fx_load_from_mem(const char *nameid, const char *content);
 API void     fx_begin();
-API void     fx_end();
+API void     fx_begin_res(int w, int h);
+API void     fx_end(handle fb);
 API void     fx_enable(int pass, int enabled);
 API int      fx_enabled(int pass);
 API void     fx_enable_all(int enabled);
@@ -17391,6 +17401,7 @@ API int    ui_float4(const char *label, float value[4]);
 API int    ui_double(const char *label, double *value);
 API int    ui_buffer(const char *label, char *buffer, int buflen);
 API int    ui_string(const char *label, char **string);
+API int    ui_text_wrap(const char *label, char *text);
 API int    ui_color3(const char *label, float *color3); //[0..255]
 API int    ui_color3f(const char *label, float *color3); //[0..1]
 API int    ui_color4(const char *label, float *color4); //[0..255]
@@ -17430,10 +17441,12 @@ API int   ui_collapse_end();
 API int  ui_panel_end();
 API int ui_window_end();
 
-API int ui_show(const char *panel_or_window_title, int enabled);
+API int  ui_show(const char *panel_or_window_title, int enabled);
-API int ui_visible(const char *panel_or_window_title); // @todo: include ui_collapse() items that are open as well?
+API int  ui_dims(const char *panel_or_window_title, float width, float height);
-API int ui_enable();
+API int  ui_visible(const char *panel_or_window_title); // @todo: include ui_collapse() items that are open as well?
-API int ui_disable();
+API int  ui_enable();
+API int  ui_disable();
+API vec2 ui_get_dims();
 
 API int ui_has_menubar();
 API int ui_menu(const char *items); // semicolon-separated or comma-separated items
@@ -340575,6 +340588,37 @@ void fullscreen_quad_rgb( texture_t texture, float gamma ) {
 //    glDisable( GL_BLEND );
 }
 
+void fullscreen_quad_rgb_flipped( texture_t texture, float gamma ) {
+    static int program = -1, vao = -1, u_inv_gamma = -1;
+    if( program < 0 ) {
+        const char* vs = vfs_read("shaders/vs_0_2_fullscreen_quad_B.glsl");
+        const char* fs = vfs_read("shaders/fs_2_4_texel_inv_gamma.glsl");
+
+        program = shader(vs, fs, "", "fragcolor" );
+        u_inv_gamma = glGetUniformLocation(program, "u_inv_gamma");
+        glGenVertexArrays( 1, (GLuint*)&vao );
+    }
+
+    GLenum texture_type = texture.flags & TEXTURE_ARRAY ? GL_TEXTURE_2D_ARRAY : GL_TEXTURE_2D;
+//    glEnable( GL_BLEND );
+    glUseProgram( program );
+    glUniform1f( u_inv_gamma, 1.0f / (gamma + !gamma) );
+
+    glBindVertexArray( vao );
+
+    glActiveTexture( GL_TEXTURE0 );
+    glBindTexture( texture_type, texture.id );
+
+    glDrawArrays( GL_TRIANGLES, 0, 6 );
+    profile_incstat("Render.num_drawcalls", +1);
+    profile_incstat("Render.num_triangles", +2);
+
+    glBindTexture( texture_type, 0 );
+    glBindVertexArray( 0 );
+    glUseProgram( 0 );
+//    glDisable( GL_BLEND );
+}
+
 void fullscreen_quad_ycbcr( texture_t textureYCbCr[3], float gamma ) {
     static int program = -1, vao = -1, u_gamma = -1, uy = -1, ucb = -1, ucr = -1;
     if( program < 0 ) {
@@ -340619,6 +340663,50 @@ void fullscreen_quad_ycbcr( texture_t textureYCbCr[3], float gamma ) {
 //    glDisable( GL_BLEND );
 }
 
+void fullscreen_quad_ycbcr_flipped( texture_t textureYCbCr[3], float gamma ) {
+    static int program = -1, vao = -1, u_gamma = -1, uy = -1, ucb = -1, ucr = -1;
+    if( program < 0 ) {
+        const char* vs = vfs_read("shaders/vs_0_2_fullscreen_quad_B.glsl");
+        const char* fs = vfs_read("shaders/fs_2_4_texel_ycbr_gamma_saturation.glsl");
+
+        program = shader(vs, fs, "", "fragcolor" );
+        u_gamma = glGetUniformLocation(program, "u_gamma");
+
+        uy = glGetUniformLocation(program, "u_texture_y");
+        ucb = glGetUniformLocation(program, "u_texture_cb");
+        ucr = glGetUniformLocation(program, "u_texture_cr");
+
+        glGenVertexArrays( 1, (GLuint*)&vao );
+    }
+
+//    glEnable( GL_BLEND );
+    glUseProgram( program );
+    glUniform1f( u_gamma, gamma );
+
+    glBindVertexArray( vao );
+
+    glUniform1i(uy, 0);
+    glActiveTexture( GL_TEXTURE0 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[0].id );
+
+    glUniform1i(ucb, 1);
+    glActiveTexture( GL_TEXTURE1 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[1].id );
+
+    glUniform1i(ucr, 2);
+    glActiveTexture( GL_TEXTURE2 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[2].id );
+
+    glDrawArrays( GL_TRIANGLES, 0, 6 );
+    profile_incstat("Render.num_drawcalls", +1);
+    profile_incstat("Render.num_triangles", +2);
+
+    glBindTexture( GL_TEXTURE_2D, 0 );
+    glBindVertexArray( 0 );
+    glUseProgram( 0 );
+//    glDisable( GL_BLEND );
+}
+
 // ----------------------------------------------------------------------------
 // sprites
 
@@ -342380,7 +342468,7 @@ void postfx_destroy(postfx *fx);
 
 bool postfx_load(postfx *fx, const char *name, const char *fragment);
 bool postfx_begin(postfx *fx, int width, int height);
-bool postfx_end(postfx *fx);
+bool postfx_end(postfx *fx, handle fb);
 
 bool postfx_enabled(postfx *fx, int pass_number);
 bool postfx_enable(postfx *fx, int pass_number, bool enabled);
@@ -342535,6 +342623,10 @@ bool postfx_begin(postfx *fx, int width, int height) {
     width += !width;
     height += !height;
 
+    int last_fb;
+    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &last_fb);
+    fbo_bind(last_fb);
+
     // resize if needed
     if( fx->diffuse[0].w != width || fx->diffuse[0].h != height ) {
         texture_destroy(&fx->diffuse[0]);
@@ -342558,7 +342650,7 @@ bool postfx_begin(postfx *fx, int width, int height) {
     uint64_t num_active_passes = popcnt64(fx->mask);
     bool active = fx->enabled && num_active_passes;
     if( !active ) {
-        fbo_unbind();
+        fbo_bind(last_fb);
         return false;
     }
 
@@ -342575,14 +342667,14 @@ bool postfx_begin(postfx *fx, int width, int height) {
     return true;
 }
 
-bool postfx_end(postfx *fx) {
+bool postfx_end(postfx *fx, handle fb) {
     uint64_t num_active_passes = popcnt64(fx->mask);
     bool active = fx->enabled && num_active_passes;
     if( !active ) {
         return false;
     }
 
-    fbo_unbind();
+    fbo_bind(fb);
 
     // disable depth test in 2d rendering
     bool is_depth_test_enabled = glIsEnabled(GL_DEPTH_TEST);
@@ -342636,7 +342728,7 @@ bool postfx_end(postfx *fx) {
                 profile_incstat("Render.num_triangles", +2);
                 glBindVertexArray(0);
 
-            if( bound ) fbo_unbind();
+            if( bound ) fbo_bind(fb);
             else glUseProgram(0);
         }
     }
@@ -342644,6 +342736,8 @@ bool postfx_end(postfx *fx) {
     if(is_depth_test_enabled);
     glEnable(GL_DEPTH_TEST);
 
+    fbo_bind(fb);
+
     return true;
 }
 
@@ -342665,8 +342759,11 @@ int fx_load(const char *filemask) {
 void fx_begin() {
     postfx_begin(&fx, window_width(), window_height());
 }
-void fx_end() {
+void fx_begin_res(int w, int h) {
-    postfx_end(&fx);
+    postfx_begin(&fx, w, h);
+}
+void fx_end(handle fb) {
+    postfx_end(&fx,fb);
 }
 int fx_enabled(int pass) {
     return postfx_enabled(&fx, pass);
@@ -342821,7 +342918,7 @@ enum shadertoy_uniforms {
 
 shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
     shadertoy_t s = {0};
-    s.dims = flags;
+    s.flags = flags;
 
     char *file = vfs_read(shaderfile);
     if( !file ) return s;
@@ -342829,7 +342926,7 @@ shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
     glGenVertexArrays(1, &s.vao);
 
     char *fs = stringf("%s%s", vfs_read("header_shadertoy.glsl"), file);
-    s.program = shader(flags ? vfs_read("shaders/vs_shadertoy_flip.glsl") : vfs_read("shaders/vs_shadertoy.glsl"), fs, "", "fragColor");
+    s.program = shader((flags&SHADERTOY_FLIP_Y) ? vfs_read("shaders/vs_shadertoy_flip.glsl") : vfs_read("shaders/vs_shadertoy.glsl"), fs, "", "fragColor");
     FREE(fs);
 
     if( strstr(file, "noise3.jpg"))
@@ -342861,7 +342958,7 @@ shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
 
 shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
     if( s->program && s->vao ) {
-        if( s->dims && !texture_rec_begin(&s->tx, s->dims, s->dims / 2) ) {
+        if( s->dims.x && !(s->flags&SHADERTOY_IGNORE_FBO) && !texture_rec_begin(&s->tx, s->dims.x, s->dims.y) ) {
             return s;
         }
 
@@ -342876,8 +342973,8 @@ shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
         glUniform1f(s->uniforms[iGlobalTime], s->t / 1000.f );
         glUniform1f(s->uniforms[iGlobalFrame], s->frame++);
         glUniform1f(s->uniforms[iGlobalDelta], delta / 1000.f );
-        glUniform2f(s->uniforms[iResolution], window_width(), window_height());
+        glUniform2f(s->uniforms[iResolution], s->dims.x ? s->dims.x : window_width(), s->dims.y ? s->dims.y : window_height());
-        glUniform4f(s->uniforms[iMouse], mx, my, s->clickx, s->clicky );
+        if (!(s->flags&SHADERTOY_IGNORE_MOUSE)) glUniform4f(s->uniforms[iMouse], mx, my, s->clickx, s->clicky );
 
         glUniform1i(s->uniforms[iFrame], (int)window_frame());
         glUniform1f(s->uniforms[iTime], time_ss());
@@ -342896,7 +342993,7 @@ shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
         glBindVertexArray(s->vao);
         glDrawArrays(GL_TRIANGLES, 0, 3);
 
-        if(s->dims) texture_rec_end(&s->tx); // texture_rec
+        if(s->dims.x && !(s->flags&SHADERTOY_IGNORE_FBO)) texture_rec_end(&s->tx); // texture_rec
     }
     return s;
 }
@@ -344031,7 +344128,7 @@ void ddraw_flush_projview(mat44 proj, mat44 view) {
                 vec3 rgbf = {((rgb>>16)&255)/255.f,((rgb>>8)&255)/255.f,((rgb>>0)&255)/255.f};
                 glUniform3fv(dd_u_color, GL_TRUE, &rgbf.x);
                 // config vertex data
-                glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STATIC_DRAW);
+                glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STREAM_DRAW);
                 glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), 0);
                 // feed vertex data
                 glDrawArrays(mode, 0, count);
@@ -344063,7 +344160,7 @@ void ddraw_flush_projview(mat44 proj, mat44 view) {
                     vec3 rgbf = {((rgb>>16)&255)/255.f,((rgb>>8)&255)/255.f,((rgb>>0)&255)/255.f};
                     glUniform3fv(dd_u_color, GL_TRUE, &rgbf.x);
                     // config vertex data
-                    glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STATIC_DRAW);
+                    glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STREAM_DRAW);
                     glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), 0);
                     // feed vertex data
                     glDrawArrays(mode, 0, count);
@@ -346860,6 +346957,12 @@ int ui_show(const char *panel_or_window_title, int enabled) {
     }
     return !!enabled;
 }
+int ui_dims(const char *panel_or_window_title, float width, float height) {
+    nk_window_set_size(ui_ctx, panel_or_window_title, (struct nk_vec2){width, height});
+}
+vec2 ui_get_dims() {
+    return (vec2){nk_window_get_width(ui_ctx), nk_window_get_height(ui_ctx)};
+}
 static char *ui_build_window_list() {
     char *build_windows_menu = 0;
     strcatf(&build_windows_menu, "%s;", ICON_MD_VIEW_QUILT); // "Windows");
@@ -348338,6 +348441,13 @@ int ui_buffer(const char *label, char *buffer, int buflen) {
     return !!(active & NK_EDIT_COMMITED) ? nk_edit_unfocus(ui_ctx), 1 : 0;
 }
 
+int ui_text_wrap(const char *label, char *text) {
+    nk_layout_row_dynamic(ui_ctx, 0, 2  - (label ? !label[0] : 1));
+    ui_label_(label, NK_TEXT_LEFT);
+    nk_text_wrap(ui_ctx, text, strlen(text));
+    return 0; 
+}
+
 int ui_string(const char *label, char **str) {
     char *bak = va("%s%c", *str ? *str : "", '\0');
     int rc = ui_buffer(label, bak, strlen(bak)+2);

engine/split/v4k_render.c

@@ -1060,6 +1060,37 @@ void fullscreen_quad_rgb( texture_t texture, float gamma ) {
 //    glDisable( GL_BLEND );
 }
 
+void fullscreen_quad_rgb_flipped( texture_t texture, float gamma ) {
+    static int program = -1, vao = -1, u_inv_gamma = -1;
+    if( program < 0 ) {
+        const char* vs = vfs_read("shaders/vs_0_2_fullscreen_quad_B.glsl");
+        const char* fs = vfs_read("shaders/fs_2_4_texel_inv_gamma.glsl");
+
+        program = shader(vs, fs, "", "fragcolor" );
+        u_inv_gamma = glGetUniformLocation(program, "u_inv_gamma");
+        glGenVertexArrays( 1, (GLuint*)&vao );
+    }
+
+    GLenum texture_type = texture.flags & TEXTURE_ARRAY ? GL_TEXTURE_2D_ARRAY : GL_TEXTURE_2D;
+//    glEnable( GL_BLEND );
+    glUseProgram( program );
+    glUniform1f( u_inv_gamma, 1.0f / (gamma + !gamma) );
+
+    glBindVertexArray( vao );
+
+    glActiveTexture( GL_TEXTURE0 );
+    glBindTexture( texture_type, texture.id );
+
+    glDrawArrays( GL_TRIANGLES, 0, 6 );
+    profile_incstat("Render.num_drawcalls", +1);
+    profile_incstat("Render.num_triangles", +2);
+
+    glBindTexture( texture_type, 0 );
+    glBindVertexArray( 0 );
+    glUseProgram( 0 );
+//    glDisable( GL_BLEND );
+}
+
 void fullscreen_quad_ycbcr( texture_t textureYCbCr[3], float gamma ) {
     static int program = -1, vao = -1, u_gamma = -1, uy = -1, ucb = -1, ucr = -1;
     if( program < 0 ) {
@@ -1104,6 +1135,50 @@ void fullscreen_quad_ycbcr( texture_t textureYCbCr[3], float gamma ) {
 //    glDisable( GL_BLEND );
 }
 
+void fullscreen_quad_ycbcr_flipped( texture_t textureYCbCr[3], float gamma ) {
+    static int program = -1, vao = -1, u_gamma = -1, uy = -1, ucb = -1, ucr = -1;
+    if( program < 0 ) {
+        const char* vs = vfs_read("shaders/vs_0_2_fullscreen_quad_B.glsl");
+        const char* fs = vfs_read("shaders/fs_2_4_texel_ycbr_gamma_saturation.glsl");
+
+        program = shader(vs, fs, "", "fragcolor" );
+        u_gamma = glGetUniformLocation(program, "u_gamma");
+
+        uy = glGetUniformLocation(program, "u_texture_y");
+        ucb = glGetUniformLocation(program, "u_texture_cb");
+        ucr = glGetUniformLocation(program, "u_texture_cr");
+
+        glGenVertexArrays( 1, (GLuint*)&vao );
+    }
+
+//    glEnable( GL_BLEND );
+    glUseProgram( program );
+    glUniform1f( u_gamma, gamma );
+
+    glBindVertexArray( vao );
+
+    glUniform1i(uy, 0);
+    glActiveTexture( GL_TEXTURE0 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[0].id );
+
+    glUniform1i(ucb, 1);
+    glActiveTexture( GL_TEXTURE1 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[1].id );
+
+    glUniform1i(ucr, 2);
+    glActiveTexture( GL_TEXTURE2 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[2].id );
+
+    glDrawArrays( GL_TRIANGLES, 0, 6 );
+    profile_incstat("Render.num_drawcalls", +1);
+    profile_incstat("Render.num_triangles", +2);
+
+    glBindTexture( GL_TEXTURE_2D, 0 );
+    glBindVertexArray( 0 );
+    glUseProgram( 0 );
+//    glDisable( GL_BLEND );
+}
+
 // ----------------------------------------------------------------------------
 // sprites
 
@@ -2865,7 +2940,7 @@ void postfx_destroy(postfx *fx);
 
 bool postfx_load(postfx *fx, const char *name, const char *fragment);
 bool postfx_begin(postfx *fx, int width, int height);
-bool postfx_end(postfx *fx);
+bool postfx_end(postfx *fx, handle fb);
 
 bool postfx_enabled(postfx *fx, int pass_number);
 bool postfx_enable(postfx *fx, int pass_number, bool enabled);
@@ -3020,6 +3095,10 @@ bool postfx_begin(postfx *fx, int width, int height) {
     width += !width;
     height += !height;
 
+    int last_fb;
+    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &last_fb);
+    fbo_bind(last_fb);
+
     // resize if needed
     if( fx->diffuse[0].w != width || fx->diffuse[0].h != height ) {
         texture_destroy(&fx->diffuse[0]);
@@ -3043,7 +3122,7 @@ bool postfx_begin(postfx *fx, int width, int height) {
     uint64_t num_active_passes = popcnt64(fx->mask);
     bool active = fx->enabled && num_active_passes;
     if( !active ) {
-        fbo_unbind();
+        fbo_bind(last_fb);
         return false;
     }
 
@@ -3060,14 +3139,14 @@ bool postfx_begin(postfx *fx, int width, int height) {
     return true;
 }
 
-bool postfx_end(postfx *fx) {
+bool postfx_end(postfx *fx, handle fb) {
     uint64_t num_active_passes = popcnt64(fx->mask);
     bool active = fx->enabled && num_active_passes;
     if( !active ) {
         return false;
     }
 
-    fbo_unbind();
+    fbo_bind(fb);
 
     // disable depth test in 2d rendering
     bool is_depth_test_enabled = glIsEnabled(GL_DEPTH_TEST);
@@ -3121,7 +3200,7 @@ bool postfx_end(postfx *fx) {
                 profile_incstat("Render.num_triangles", +2);
                 glBindVertexArray(0);
 
-            if( bound ) fbo_unbind();
+            if( bound ) fbo_bind(fb);
             else glUseProgram(0);
         }
     }
@@ -3129,6 +3208,8 @@ bool postfx_end(postfx *fx) {
     if(is_depth_test_enabled);
     glEnable(GL_DEPTH_TEST);
 
+    fbo_bind(fb);
+
     return true;
 }
 
@@ -3150,8 +3231,11 @@ int fx_load(const char *filemask) {
 void fx_begin() {
     postfx_begin(&fx, window_width(), window_height());
 }
-void fx_end() {
+void fx_begin_res(int w, int h) {
-    postfx_end(&fx);
+    postfx_begin(&fx, w, h);
+}
+void fx_end(handle fb) {
+    postfx_end(&fx,fb);
 }
 int fx_enabled(int pass) {
     return postfx_enabled(&fx, pass);
@@ -3306,7 +3390,7 @@ enum shadertoy_uniforms {
 
 shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
     shadertoy_t s = {0};
-    s.dims = flags;
+    s.flags = flags;
 
     char *file = vfs_read(shaderfile);
     if( !file ) return s;
@@ -3314,7 +3398,7 @@ shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
     glGenVertexArrays(1, &s.vao);
 
     char *fs = stringf("%s%s", vfs_read("header_shadertoy.glsl"), file);
-    s.program = shader(flags ? vfs_read("shaders/vs_shadertoy_flip.glsl") : vfs_read("shaders/vs_shadertoy.glsl"), fs, "", "fragColor");
+    s.program = shader((flags&SHADERTOY_FLIP_Y) ? vfs_read("shaders/vs_shadertoy_flip.glsl") : vfs_read("shaders/vs_shadertoy.glsl"), fs, "", "fragColor");
     FREE(fs);
 
     if( strstr(file, "noise3.jpg"))
@@ -3346,7 +3430,7 @@ shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
 
 shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
     if( s->program && s->vao ) {
-        if( s->dims && !texture_rec_begin(&s->tx, s->dims, s->dims / 2) ) {
+        if( s->dims.x && !(s->flags&SHADERTOY_IGNORE_FBO) && !texture_rec_begin(&s->tx, s->dims.x, s->dims.y) ) {
             return s;
         }
 
@@ -3361,8 +3445,8 @@ shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
         glUniform1f(s->uniforms[iGlobalTime], s->t / 1000.f );
         glUniform1f(s->uniforms[iGlobalFrame], s->frame++);
         glUniform1f(s->uniforms[iGlobalDelta], delta / 1000.f );
-        glUniform2f(s->uniforms[iResolution], window_width(), window_height());
+        glUniform2f(s->uniforms[iResolution], s->dims.x ? s->dims.x : window_width(), s->dims.y ? s->dims.y : window_height());
-        glUniform4f(s->uniforms[iMouse], mx, my, s->clickx, s->clicky );
+        if (!(s->flags&SHADERTOY_IGNORE_MOUSE)) glUniform4f(s->uniforms[iMouse], mx, my, s->clickx, s->clicky );
 
         glUniform1i(s->uniforms[iFrame], (int)window_frame());
         glUniform1f(s->uniforms[iTime], time_ss());
@@ -3381,7 +3465,7 @@ shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
         glBindVertexArray(s->vao);
         glDrawArrays(GL_TRIANGLES, 0, 3);
 
-        if(s->dims) texture_rec_end(&s->tx); // texture_rec
+        if(s->dims.x && !(s->flags&SHADERTOY_IGNORE_FBO)) texture_rec_end(&s->tx); // texture_rec
     }
     return s;
 }

engine/split/v4k_render.h

@@ -183,8 +183,10 @@ API void pbr_material_destroy(pbr_material_t *m);
 // -----------------------------------------------------------------------------
 // fullscreen quads
 
-API void  fullscreen_quad_rgb( texture_t texture_rgb, float gamma );
+API void fullscreen_quad_rgb( texture_t texture_rgb, float gamma );
-API void  fullscreen_quad_ycbcr( texture_t texture_YCbCr[3], float gamma );
+API void fullscreen_quad_rgb_flipped( texture_t texture, float gamma );
+API void fullscreen_quad_ycbcr( texture_t texture_YCbCr[3], float gamma );
+API void fullscreen_quad_ycbcr_flipped( texture_t texture_YCbCr[3], float gamma );
 
 // -----------------------------------------------------------------------------
 // sprites
@@ -510,6 +512,12 @@ typedef struct material_t {
 // -----------------------------------------------------------------------------
 // shadertoys
 
+enum {
+    SHADERTOY_FLIP_Y = 2,
+    SHADERTOY_IGNORE_FBO = 4,
+    SHADERTOY_IGNORE_MOUSE = 8,
+};
+
 typedef struct shadertoy_t {
     handle vao, program;
     int uniforms[32];
@@ -518,7 +526,8 @@ typedef struct shadertoy_t {
     float clickx, clicky;
     uint64_t t;
     texture_t tx;
-    unsigned dims;
+    vec2i dims;
+    int flags;
 } shadertoy_t;
 
 API shadertoy_t  shadertoy( const char *shaderfile, unsigned flags );
@@ -653,7 +662,8 @@ API void     viewport_clip(vec2 from, vec2 to);
 API int      fx_load(const char *file);
 API int      fx_load_from_mem(const char *nameid, const char *content);
 API void     fx_begin();
-API void     fx_end();
+API void     fx_begin_res(int w, int h);
+API void     fx_end(handle fb);
 API void     fx_enable(int pass, int enabled);
 API int      fx_enabled(int pass);
 API void     fx_enable_all(int enabled);

engine/split/v4k_renderdd.c

@@ -95,7 +95,7 @@ void ddraw_flush_projview(mat44 proj, mat44 view) {
                 vec3 rgbf = {((rgb>>16)&255)/255.f,((rgb>>8)&255)/255.f,((rgb>>0)&255)/255.f};
                 glUniform3fv(dd_u_color, GL_TRUE, &rgbf.x);
                 // config vertex data
-                glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STATIC_DRAW);
+                glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STREAM_DRAW);
                 glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), 0);
                 // feed vertex data
                 glDrawArrays(mode, 0, count);
@@ -127,7 +127,7 @@ void ddraw_flush_projview(mat44 proj, mat44 view) {
                     vec3 rgbf = {((rgb>>16)&255)/255.f,((rgb>>8)&255)/255.f,((rgb>>0)&255)/255.f};
                     glUniform3fv(dd_u_color, GL_TRUE, &rgbf.x);
                     // config vertex data
-                    glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STATIC_DRAW);
+                    glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STREAM_DRAW);
                     glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), 0);
                     // feed vertex data
                     glDrawArrays(mode, 0, count);

engine/split/v4k_ui.c

@@ -434,6 +434,12 @@ int ui_show(const char *panel_or_window_title, int enabled) {
     }
     return !!enabled;
 }
+int ui_dims(const char *panel_or_window_title, float width, float height) {
+    nk_window_set_size(ui_ctx, panel_or_window_title, (struct nk_vec2){width, height});
+}
+vec2 ui_get_dims() {
+    return (vec2){nk_window_get_width(ui_ctx), nk_window_get_height(ui_ctx)};
+}
 static char *ui_build_window_list() {
     char *build_windows_menu = 0;
     strcatf(&build_windows_menu, "%s;", ICON_MD_VIEW_QUILT); // "Windows");
@@ -1912,6 +1918,13 @@ int ui_buffer(const char *label, char *buffer, int buflen) {
     return !!(active & NK_EDIT_COMMITED) ? nk_edit_unfocus(ui_ctx), 1 : 0;
 }
 
+int ui_text_wrap(const char *label, char *text) {
+    nk_layout_row_dynamic(ui_ctx, 0, 2  - (label ? !label[0] : 1));
+    ui_label_(label, NK_TEXT_LEFT);
+    nk_text_wrap(ui_ctx, text, strlen(text));
+    return 0; 
+}
+
 int ui_string(const char *label, char **str) {
     char *bak = va("%s%c", *str ? *str : "", '\0');
     int rc = ui_buffer(label, bak, strlen(bak)+2);

engine/split/v4k_ui.h

@@ -25,6 +25,7 @@ API int    ui_float4(const char *label, float value[4]);
 API int    ui_double(const char *label, double *value);
 API int    ui_buffer(const char *label, char *buffer, int buflen);
 API int    ui_string(const char *label, char **string);
+API int    ui_text_wrap(const char *label, char *text);
 API int    ui_color3(const char *label, float *color3); //[0..255]
 API int    ui_color3f(const char *label, float *color3); //[0..1]
 API int    ui_color4(const char *label, float *color4); //[0..255]
@@ -64,10 +65,12 @@ API int   ui_collapse_end();
 API int  ui_panel_end();
 API int ui_window_end();
 
-API int ui_show(const char *panel_or_window_title, int enabled);
+API int  ui_show(const char *panel_or_window_title, int enabled);
-API int ui_visible(const char *panel_or_window_title); // @todo: include ui_collapse() items that are open as well?
+API int  ui_dims(const char *panel_or_window_title, float width, float height);
-API int ui_enable();
+API int  ui_visible(const char *panel_or_window_title); // @todo: include ui_collapse() items that are open as well?
-API int ui_disable();
+API int  ui_enable();
+API int  ui_disable();
+API vec2 ui_get_dims();
 
 API int ui_has_menubar();
 API int ui_menu(const char *items); // semicolon-separated or comma-separated items

engine/v4k.c

@@ -11284,6 +11284,37 @@ void fullscreen_quad_rgb( texture_t texture, float gamma ) {
 //    glDisable( GL_BLEND );
 }
 
+void fullscreen_quad_rgb_flipped( texture_t texture, float gamma ) {
+    static int program = -1, vao = -1, u_inv_gamma = -1;
+    if( program < 0 ) {
+        const char* vs = vfs_read("shaders/vs_0_2_fullscreen_quad_B.glsl");
+        const char* fs = vfs_read("shaders/fs_2_4_texel_inv_gamma.glsl");
+
+        program = shader(vs, fs, "", "fragcolor" );
+        u_inv_gamma = glGetUniformLocation(program, "u_inv_gamma");
+        glGenVertexArrays( 1, (GLuint*)&vao );
+    }
+
+    GLenum texture_type = texture.flags & TEXTURE_ARRAY ? GL_TEXTURE_2D_ARRAY : GL_TEXTURE_2D;
+//    glEnable( GL_BLEND );
+    glUseProgram( program );
+    glUniform1f( u_inv_gamma, 1.0f / (gamma + !gamma) );
+
+    glBindVertexArray( vao );
+
+    glActiveTexture( GL_TEXTURE0 );
+    glBindTexture( texture_type, texture.id );
+
+    glDrawArrays( GL_TRIANGLES, 0, 6 );
+    profile_incstat("Render.num_drawcalls", +1);
+    profile_incstat("Render.num_triangles", +2);
+
+    glBindTexture( texture_type, 0 );
+    glBindVertexArray( 0 );
+    glUseProgram( 0 );
+//    glDisable( GL_BLEND );
+}
+
 void fullscreen_quad_ycbcr( texture_t textureYCbCr[3], float gamma ) {
     static int program = -1, vao = -1, u_gamma = -1, uy = -1, ucb = -1, ucr = -1;
     if( program < 0 ) {
@@ -11328,6 +11359,50 @@ void fullscreen_quad_ycbcr( texture_t textureYCbCr[3], float gamma ) {
 //    glDisable( GL_BLEND );
 }
 
+void fullscreen_quad_ycbcr_flipped( texture_t textureYCbCr[3], float gamma ) {
+    static int program = -1, vao = -1, u_gamma = -1, uy = -1, ucb = -1, ucr = -1;
+    if( program < 0 ) {
+        const char* vs = vfs_read("shaders/vs_0_2_fullscreen_quad_B.glsl");
+        const char* fs = vfs_read("shaders/fs_2_4_texel_ycbr_gamma_saturation.glsl");
+
+        program = shader(vs, fs, "", "fragcolor" );
+        u_gamma = glGetUniformLocation(program, "u_gamma");
+
+        uy = glGetUniformLocation(program, "u_texture_y");
+        ucb = glGetUniformLocation(program, "u_texture_cb");
+        ucr = glGetUniformLocation(program, "u_texture_cr");
+
+        glGenVertexArrays( 1, (GLuint*)&vao );
+    }
+
+//    glEnable( GL_BLEND );
+    glUseProgram( program );
+    glUniform1f( u_gamma, gamma );
+
+    glBindVertexArray( vao );
+
+    glUniform1i(uy, 0);
+    glActiveTexture( GL_TEXTURE0 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[0].id );
+
+    glUniform1i(ucb, 1);
+    glActiveTexture( GL_TEXTURE1 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[1].id );
+
+    glUniform1i(ucr, 2);
+    glActiveTexture( GL_TEXTURE2 );
+    glBindTexture( GL_TEXTURE_2D, textureYCbCr[2].id );
+
+    glDrawArrays( GL_TRIANGLES, 0, 6 );
+    profile_incstat("Render.num_drawcalls", +1);
+    profile_incstat("Render.num_triangles", +2);
+
+    glBindTexture( GL_TEXTURE_2D, 0 );
+    glBindVertexArray( 0 );
+    glUseProgram( 0 );
+//    glDisable( GL_BLEND );
+}
+
 // ----------------------------------------------------------------------------
 // sprites
 
@@ -13089,7 +13164,7 @@ void postfx_destroy(postfx *fx);
 
 bool postfx_load(postfx *fx, const char *name, const char *fragment);
 bool postfx_begin(postfx *fx, int width, int height);
-bool postfx_end(postfx *fx);
+bool postfx_end(postfx *fx, handle fb);
 
 bool postfx_enabled(postfx *fx, int pass_number);
 bool postfx_enable(postfx *fx, int pass_number, bool enabled);
@@ -13244,6 +13319,10 @@ bool postfx_begin(postfx *fx, int width, int height) {
     width += !width;
     height += !height;
 
+    int last_fb;
+    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &last_fb);
+    fbo_bind(last_fb);
+
     // resize if needed
     if( fx->diffuse[0].w != width || fx->diffuse[0].h != height ) {
         texture_destroy(&fx->diffuse[0]);
@@ -13267,7 +13346,7 @@ bool postfx_begin(postfx *fx, int width, int height) {
     uint64_t num_active_passes = popcnt64(fx->mask);
     bool active = fx->enabled && num_active_passes;
     if( !active ) {
-        fbo_unbind();
+        fbo_bind(last_fb);
         return false;
     }
 
@@ -13284,14 +13363,14 @@ bool postfx_begin(postfx *fx, int width, int height) {
     return true;
 }
 
-bool postfx_end(postfx *fx) {
+bool postfx_end(postfx *fx, handle fb) {
     uint64_t num_active_passes = popcnt64(fx->mask);
     bool active = fx->enabled && num_active_passes;
     if( !active ) {
         return false;
     }
 
-    fbo_unbind();
+    fbo_bind(fb);
 
     // disable depth test in 2d rendering
     bool is_depth_test_enabled = glIsEnabled(GL_DEPTH_TEST);
@@ -13345,7 +13424,7 @@ bool postfx_end(postfx *fx) {
                 profile_incstat("Render.num_triangles", +2);
                 glBindVertexArray(0);
 
-            if( bound ) fbo_unbind();
+            if( bound ) fbo_bind(fb);
             else glUseProgram(0);
         }
     }
@@ -13353,6 +13432,8 @@ bool postfx_end(postfx *fx) {
     if(is_depth_test_enabled);
     glEnable(GL_DEPTH_TEST);
 
+    fbo_bind(fb);
+
     return true;
 }
 
@@ -13374,8 +13455,11 @@ int fx_load(const char *filemask) {
 void fx_begin() {
     postfx_begin(&fx, window_width(), window_height());
 }
-void fx_end() {
+void fx_begin_res(int w, int h) {
-    postfx_end(&fx);
+    postfx_begin(&fx, w, h);
+}
+void fx_end(handle fb) {
+    postfx_end(&fx,fb);
 }
 int fx_enabled(int pass) {
     return postfx_enabled(&fx, pass);
@@ -13530,7 +13614,7 @@ enum shadertoy_uniforms {
 
 shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
     shadertoy_t s = {0};
-    s.dims = flags;
+    s.flags = flags;
 
     char *file = vfs_read(shaderfile);
     if( !file ) return s;
@@ -13538,7 +13622,7 @@ shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
     glGenVertexArrays(1, &s.vao);
 
     char *fs = stringf("%s%s", vfs_read("header_shadertoy.glsl"), file);
-    s.program = shader(flags ? vfs_read("shaders/vs_shadertoy_flip.glsl") : vfs_read("shaders/vs_shadertoy.glsl"), fs, "", "fragColor");
+    s.program = shader((flags&SHADERTOY_FLIP_Y) ? vfs_read("shaders/vs_shadertoy_flip.glsl") : vfs_read("shaders/vs_shadertoy.glsl"), fs, "", "fragColor");
     FREE(fs);
 
     if( strstr(file, "noise3.jpg"))
@@ -13570,7 +13654,7 @@ shadertoy_t shadertoy( const char *shaderfile, unsigned flags ) {
 
 shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
     if( s->program && s->vao ) {
-        if( s->dims && !texture_rec_begin(&s->tx, s->dims, s->dims / 2) ) {
+        if( s->dims.x && !(s->flags&SHADERTOY_IGNORE_FBO) && !texture_rec_begin(&s->tx, s->dims.x, s->dims.y) ) {
             return s;
         }
 
@@ -13585,8 +13669,8 @@ shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
         glUniform1f(s->uniforms[iGlobalTime], s->t / 1000.f );
         glUniform1f(s->uniforms[iGlobalFrame], s->frame++);
         glUniform1f(s->uniforms[iGlobalDelta], delta / 1000.f );
-        glUniform2f(s->uniforms[iResolution], window_width(), window_height());
+        glUniform2f(s->uniforms[iResolution], s->dims.x ? s->dims.x : window_width(), s->dims.y ? s->dims.y : window_height());
-        glUniform4f(s->uniforms[iMouse], mx, my, s->clickx, s->clicky );
+        if (!(s->flags&SHADERTOY_IGNORE_MOUSE)) glUniform4f(s->uniforms[iMouse], mx, my, s->clickx, s->clicky );
 
         glUniform1i(s->uniforms[iFrame], (int)window_frame());
         glUniform1f(s->uniforms[iTime], time_ss());
@@ -13605,7 +13689,7 @@ shadertoy_t* shadertoy_render(shadertoy_t *s, float delta) {
         glBindVertexArray(s->vao);
         glDrawArrays(GL_TRIANGLES, 0, 3);
 
-        if(s->dims) texture_rec_end(&s->tx); // texture_rec
+        if(s->dims.x && !(s->flags&SHADERTOY_IGNORE_FBO)) texture_rec_end(&s->tx); // texture_rec
     }
     return s;
 }
@@ -14740,7 +14824,7 @@ void ddraw_flush_projview(mat44 proj, mat44 view) {
                 vec3 rgbf = {((rgb>>16)&255)/255.f,((rgb>>8)&255)/255.f,((rgb>>0)&255)/255.f};
                 glUniform3fv(dd_u_color, GL_TRUE, &rgbf.x);
                 // config vertex data
-                glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STATIC_DRAW);
+                glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STREAM_DRAW);
                 glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), 0);
                 // feed vertex data
                 glDrawArrays(mode, 0, count);
@@ -14772,7 +14856,7 @@ void ddraw_flush_projview(mat44 proj, mat44 view) {
                     vec3 rgbf = {((rgb>>16)&255)/255.f,((rgb>>8)&255)/255.f,((rgb>>0)&255)/255.f};
                     glUniform3fv(dd_u_color, GL_TRUE, &rgbf.x);
                     // config vertex data
-                    glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STATIC_DRAW);
+                    glBufferData(GL_ARRAY_BUFFER, count * 3 * 4, list, GL_STREAM_DRAW);
                     glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), 0);
                     // feed vertex data
                     glDrawArrays(mode, 0, count);
@@ -17569,6 +17653,12 @@ int ui_show(const char *panel_or_window_title, int enabled) {
     }
     return !!enabled;
 }
+int ui_dims(const char *panel_or_window_title, float width, float height) {
+    nk_window_set_size(ui_ctx, panel_or_window_title, (struct nk_vec2){width, height});
+}
+vec2 ui_get_dims() {
+    return (vec2){nk_window_get_width(ui_ctx), nk_window_get_height(ui_ctx)};
+}
 static char *ui_build_window_list() {
     char *build_windows_menu = 0;
     strcatf(&build_windows_menu, "%s;", ICON_MD_VIEW_QUILT); // "Windows");
@@ -19047,6 +19137,13 @@ int ui_buffer(const char *label, char *buffer, int buflen) {
     return !!(active & NK_EDIT_COMMITED) ? nk_edit_unfocus(ui_ctx), 1 : 0;
 }
 
+int ui_text_wrap(const char *label, char *text) {
+    nk_layout_row_dynamic(ui_ctx, 0, 2  - (label ? !label[0] : 1));
+    ui_label_(label, NK_TEXT_LEFT);
+    nk_text_wrap(ui_ctx, text, strlen(text));
+    return 0; 
+}
+
 int ui_string(const char *label, char **str) {
     char *bak = va("%s%c", *str ? *str : "", '\0');
     int rc = ui_buffer(label, bak, strlen(bak)+2);

engine/v4k.h

@@ -2619,8 +2619,10 @@ API void pbr_material_destroy(pbr_material_t *m);
 // -----------------------------------------------------------------------------
 // fullscreen quads
 
-API void  fullscreen_quad_rgb( texture_t texture_rgb, float gamma );
+API void fullscreen_quad_rgb( texture_t texture_rgb, float gamma );
-API void  fullscreen_quad_ycbcr( texture_t texture_YCbCr[3], float gamma );
+API void fullscreen_quad_rgb_flipped( texture_t texture, float gamma );
+API void fullscreen_quad_ycbcr( texture_t texture_YCbCr[3], float gamma );
+API void fullscreen_quad_ycbcr_flipped( texture_t texture_YCbCr[3], float gamma );
 
 // -----------------------------------------------------------------------------
 // sprites
@@ -2946,6 +2948,12 @@ typedef struct material_t {
 // -----------------------------------------------------------------------------
 // shadertoys
 
+enum {
+    SHADERTOY_FLIP_Y = 2,
+    SHADERTOY_IGNORE_FBO = 4,
+    SHADERTOY_IGNORE_MOUSE = 8,
+};
+
 typedef struct shadertoy_t {
     handle vao, program;
     int uniforms[32];
@@ -2954,7 +2962,8 @@ typedef struct shadertoy_t {
     float clickx, clicky;
     uint64_t t;
     texture_t tx;
-    unsigned dims;
+    vec2i dims;
+    int flags;
 } shadertoy_t;
 
 API shadertoy_t  shadertoy( const char *shaderfile, unsigned flags );
@@ -3089,7 +3098,8 @@ API void     viewport_clip(vec2 from, vec2 to);
 API int      fx_load(const char *file);
 API int      fx_load_from_mem(const char *nameid, const char *content);
 API void     fx_begin();
-API void     fx_end();
+API void     fx_begin_res(int w, int h);
+API void     fx_end(handle fb);
 API void     fx_enable(int pass, int enabled);
 API int      fx_enabled(int pass);
 API void     fx_enable_all(int enabled);
@@ -3474,6 +3484,7 @@ API int    ui_float4(const char *label, float value[4]);
 API int    ui_double(const char *label, double *value);
 API int    ui_buffer(const char *label, char *buffer, int buflen);
 API int    ui_string(const char *label, char **string);
+API int    ui_text_wrap(const char *label, char *text);
 API int    ui_color3(const char *label, float *color3); //[0..255]
 API int    ui_color3f(const char *label, float *color3); //[0..1]
 API int    ui_color4(const char *label, float *color4); //[0..255]
@@ -3513,10 +3524,12 @@ API int   ui_collapse_end();
 API int  ui_panel_end();
 API int ui_window_end();
 
-API int ui_show(const char *panel_or_window_title, int enabled);
+API int  ui_show(const char *panel_or_window_title, int enabled);
-API int ui_visible(const char *panel_or_window_title); // @todo: include ui_collapse() items that are open as well?
+API int  ui_dims(const char *panel_or_window_title, float width, float height);
-API int ui_enable();
+API int  ui_visible(const char *panel_or_window_title); // @todo: include ui_collapse() items that are open as well?
-API int ui_disable();
+API int  ui_enable();
+API int  ui_disable();
+API vec2 ui_get_dims();
 
 API int ui_has_menubar();
 API int ui_menu(const char *items); // semicolon-separated or comma-separated items

hello.c

@@ -80,7 +80,7 @@ int main() {
             model_render(girl, cam.proj, cam.view, girl.pivot, 0);
 
         // post-fxs end here
-        fx_end();
+        fx_end(0);
 
         gizmo(&pos, &rot, &sca);
         model_render_skeleton(girl, girl.pivot);

tools/editor/editor.c

@@ -1772,7 +1772,7 @@ int main() {
 
                 editor_obj_call0(obj, fn_draw);
             }
-            fx_end();
+            fx_end(0);
 
             // draw gizmos, aabbs, markers, etc
             for each_set_ptr(editor_selection, void*, o) {

workbench/pluginapi.h

@@ -0,0 +1,26 @@
+#pragma once
+
+struct asset_t;
+
+typedef int (*ed_proc)(struct asset_t *asset);
+
+typedef struct {
+    ed_proc init;
+    ed_proc tick;
+    ed_proc quit;
+    char* (*ext)();
+} editor_vtable_t;
+
+typedef struct {
+    char *name;
+    editor_vtable_t f;
+} editor_t;
+
+typedef struct {
+    char *name;
+    editor_t *ed;
+
+    int slot; //<< internal, used by plugin
+} asset_t;
+
+#define PLUG_DECLARE(name) editor_vtable_t name##__procs = { name##_init, name##_tick, name##_quit, name##_ext };

workbench/plugins/shader_editor.c

@@ -0,0 +1,173 @@
+#include "v4k.h"
+#include "pluginapi.h"
+
+enum { WIDTH = 1024, HEIGHT = 1024 };
+enum { UI_WIDTH = 512, UI_HEIGHT = 512 };
+enum { VS, FS, FX, SHADERTOY };
+
+typedef struct {
+	char kind;
+	bool reload;
+
+	// preview
+	handle fb, flipFB;
+	texture_t tex, flipTex;
+	texture_t texDepth;
+
+	union {
+		struct {
+			shadertoy_t shadertoy;
+			bool flip_y;
+			bool allow_mouse;
+		};
+
+		struct {
+			int model;
+			int fx_slot;
+		};
+	};
+} shader_asset_t;
+
+array(shader_asset_t) shaders = 0;
+
+char *shader_editor_ext() {
+	return "fx,glsl,vs,fs";
+}
+
+static inline
+void reload_shader(asset_t *f, shader_asset_t *s) {
+	if (s->kind == SHADERTOY) {
+		s->shadertoy = shadertoy(f->name, (s->flip_y?SHADERTOY_FLIP_Y:0)|(s->allow_mouse?0:SHADERTOY_IGNORE_MOUSE)|SHADERTOY_IGNORE_FBO);
+		s->shadertoy.dims.x = WIDTH;
+		s->shadertoy.dims.y = HEIGHT;
+	}
+	else if (s->kind == FX) {
+		s->fx_slot = fx_load_from_mem(f->name, vfs_read(f->name));
+	}
+
+	s->reload = 0;
+}
+
+int shader_editor_init(asset_t *f) {
+	shader_asset_t a = {0};
+	a.reload = 1;
+
+	if (strstri(f->name, "shadertoys")) {
+		a.kind = SHADERTOY;
+	}
+	// else if (strbegi(file_name(f->name), "vs_") || strendi(f->name, ".vs")) {
+	// 	a.kind = VS;
+	// }
+	// else if (strbegi(file_name(f->name), "fs_") || strendi(f->name, ".fs")) {
+	// 	a.kind = FS;
+	// }
+	else if (strbegi(file_name(f->name), "fx") && strendi(f->name, ".fs")) {
+		a.kind = FX;
+	} else {
+		PRINTF("unsupported shader: %s\n", f->name);
+		return 1;
+	}
+
+	a.tex = texture_create(WIDTH, HEIGHT, 4, NULL, TEXTURE_RGBA);
+	a.flipTex = texture_create(WIDTH, HEIGHT, 4, NULL, TEXTURE_RGBA);
+	a.texDepth = texture_create(WIDTH, HEIGHT, 1, NULL, TEXTURE_DEPTH|TEXTURE_FLOAT);
+	a.fb = fbo(a.tex.id, a.texDepth.id, 0);
+	a.flipFB = fbo(a.flipTex.id, 0, 0);
+
+	f->slot = array_count(shaders);
+	array_push(shaders, a);
+	return 0;
+}
+
+int shader_editor_tick(asset_t *f) {
+	shader_asset_t *s = (shaders+f->slot);
+
+	if (s->reload) {
+		reload_shader(f, s);
+		ui_dims(f->name, UI_WIDTH, UI_HEIGHT*1.45);
+	}
+
+	fx_enable_all(0);
+
+	// vec2 win_dims = ui_get_dims();
+	// ui_dims(f->name, win_dims.x, win_dims.x*1.45);
+
+	fbo_bind(s->fb);
+	glViewport(0,0,WIDTH,HEIGHT);
+	glClearDepth(1);
+	glClearColor(0.0f,0.0f,0.0f,0.0f);
+	glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
+	if (s->kind == SHADERTOY) {
+		shadertoy_render(&s->shadertoy, window_delta());
+	}
+	else if (s->kind == FX) {
+		fx_enable(s->fx_slot, 1);
+		// fx_begin();
+		fx_begin_res(WIDTH, HEIGHT);
+		enum { CUBE, SPHERE, SUZANNE, SHADERBALL, MAX_MODELS };
+		static camera_t cam;
+		static skybox_t sky;
+		static model_t models[MAX_MODELS];
+		do_once {
+			cam = camera();
+			sky = skybox(0,0);
+			camera_fps(&cam, 0,45);
+			models[CUBE] = model("meshes/cube.obj", MODEL_NO_ANIMATIONS);
+			// model_set_texture(models[CUBE], texture_checker());
+            rotation44(models[CUBE].pivot, -90, 1,0,0);
+			models[SPHERE] = model("meshes/sphere.obj", MODEL_NO_ANIMATIONS); 
+            rotation44(models[SPHERE].pivot, -90, 1,0,0);
+			models[SUZANNE] = model("meshes/suzanne.obj", MODEL_NO_ANIMATIONS); 
+            rotation44(models[SUZANNE].pivot, -90, 1,0,0);
+			models[SHADERBALL] = model("meshes/shaderBall.glb", MODEL_NO_ANIMATIONS); 
+			mat44 sca; scale44(sca, 1,1,1);
+            mat44 rot; rotation44(rot, -90, 1,0,0);
+            multiply44x2(models[SHADERBALL].pivot, sca, rot);
+		}
+
+		bool active = (ui_active() || ui_hover()) && input(MOUSE_L) || input(MOUSE_M) || input(MOUSE_R);
+        vec2 mouse = scale2(vec2(input_diff(MOUSE_X), -input_diff(MOUSE_Y)), 0.2f * active);
+        // camera_move(&cam, wasdecq.x,wasdecq.y,wasdecq.z);
+        camera_orbit(&cam, mouse.x,mouse.y, input_diff(MOUSE_W));
+    	perspective44(cam.proj, cam.fov, UI_WIDTH/(float)UI_HEIGHT, 0.1f, 100.f);
+    	skybox_render(&sky, cam.proj, cam.view);
+    	ddraw_grid(0);
+    	ddraw_flush();
+		model_render(models[s->model], cam.proj, cam.view, models[s->model].pivot, 0);
+		fx_end(s->fb);
+
+		// fbo_bind(s->fb);
+		// fullscreen_quad_rgb(s->tex, 1.0);
+		// fbo_unbind();
+	}
+
+	fbo_bind(s->flipFB);
+	fullscreen_quad_rgb(s->tex, 1.0);
+	fbo_unbind();
+
+	ui_image(0, s->flipTex.id, UI_WIDTH, UI_HEIGHT);
+
+	if (s->kind == SHADERTOY) {
+		if (ui_bool("Flip Y", &s->flip_y)) {
+			s->reload = 1;
+		}
+		if (ui_bool("Allow mouse", &s->allow_mouse)) {
+			s->reload = 1;
+		}
+	}
+	else if (s->kind == FX) {
+		static char* model_selections[] = {"Cube", "Sphere", "Suzanne", "Shader ball"};
+		ui_list("Model", model_selections, 4, &s->model);
+	}
+	return 0;
+}
+
+int shader_editor_quit(asset_t *f) {
+	shader_asset_t *s = (shaders+f->slot);
+	
+	fbo_destroy(s->fb);
+	fbo_destroy(s->flipFB);
+	return 0;
+}
+
+PLUG_DECLARE(shader_editor);

workbench/workbench.c

@@ -0,0 +1,127 @@
+#define COOK_ON_DEMAND 1
+#include "v4k.c"
+#include "pluginapi.h"
+
+array(editor_t) editors = 0;
+array(asset_t) assets = 0;
+
+#define PLUGINS\
+    X(shader_editor)
+
+#define X(name) extern editor_vtable_t name##__procs;
+    PLUGINS
+#undef X
+
+void load_editor(char *pname, editor_vtable_t f) {
+    char *name = STRDUP(pname); // @leak
+
+    editor_t ed = {0};
+    ed.f = f;
+    ed.name = file_base(STRDUP(name)); // @leak
+    PRINTF("loaded plugin: '%s'\n", ed.name);
+    array_push(editors, ed);
+}
+
+void load_editors() {
+    #define X(name) load_editor(#name, name##__procs);
+        PLUGINS
+    #undef X
+}
+
+map(char*, editor_t*) assocs;
+
+void register_extensions() {
+    map_init(assocs, less_str, hash_str);
+
+    for (int i=0; i<array_count(editors); i++) {
+        char *types = editors[i].f.ext();
+
+        for each_substring(types, ",", ext) {
+            map_find_or_add(assocs, STRDUP(ext), (editors+i));
+            PRINTF("extension '%s' mapped to '%s'\n", ext, editors[i].name);
+        }
+    }
+}
+
+void edit_asset(char *fname) {
+    app_exec(va("%s %s", ifdef(win32, "start", ifdef(osx, "open", "xdg-open")), fname));
+}
+
+void load_asset(const char *fname) {
+    char *ext = (file_ext(fname)+1);
+    PRINTF("opened asset: %s (%s)\n", fname, ext);
+
+    // see if we have a supported editor plugin registered
+    editor_t **ed = map_find(assocs, ext);
+    if (!ed) {
+        PRINTF("fallback exec %s\n", fname);
+        edit_asset(fname);
+        return;
+    }
+
+    asset_t asset = {0};
+    asset.name = STRDUP(fname);
+    asset.ed = *ed;
+    array_push(assets, asset);
+    if (asset.ed->f.init((struct asset_t*)array_back(assets))) {
+        FREE(asset.name);
+        array_pop(assets);
+        PRINTF("fallback exec %s\n", fname);
+        edit_asset(fname);
+    }
+}
+
+int main() {
+    window_create(75.0, WINDOW_MSAA8);
+    window_fps_unlock();
+
+    camera_t cam = camera();
+    camera_enable(&cam);
+
+    load_editors();
+    register_extensions();
+
+    #if 1
+    load_asset("demos/art/shadertoys/!default.fs");
+    load_asset("demos/art/fx/fxDithering.fs");
+
+    #endif
+
+    while( window_swap() && !input(KEY_ESC) ) {
+        static int wb_enabled = 1;
+        if (ui_window("Workbench", &wb_enabled)) {
+            static const char *file;
+            static bool show_browser = 1;
+            if( ui_browse(&file, &show_browser) ) {
+                load_asset(file);
+                show_browser = 1;
+            }
+            ui_window_end();
+        }
+
+        for (int i=0; i<array_count(assets); i++) {
+            asset_t *f = (assets+i);
+            int open = 1;
+            if (ui_window(f->name, &open)) {
+                f->ed->f.tick(f);
+
+                ui_separator();
+                if (ui_button("reload asset") || !open) {
+                    f->ed->f.quit(f);
+                    f->ed->f.init(f);
+                }
+                if (ui_button("edit asset") || !open) {
+                    edit_asset(assets[i].name);
+                }
+                if (ui_button("close asset") || !open) {
+                    f->ed->f.quit(f);
+                    FREE(assets[i].name);
+                    array_erase(assets, i);
+                    --i;
+                }
+                ui_window_end();
+            }
+        }
+    }
+    return 0;
+}