fix html5 build + add a new HTML5 demo

demos/html5/MAKE.bat

@@ -1,4 +1,4 @@
-if "%1"=="" MAKE.bat demo_collide.c
+if "%1"=="" MAKE.bat demo_ddraw.c
 
 del index.html 2>NUL >NUL
 del index.worker.js 2>NUL >NUL
@@ -19,5 +19,5 @@ rem cook art
 
 rem host webserver, compile and launch
 rem start python -m http.server --bind 127.0.0.1 8000
-call emcc %* -g ..\..\engine\v4k.c -I..\..\engine -o index.html -pthread -s FULL_ES3 -s USE_PTHREADS -s USE_GLFW=3 -s SINGLE_FILE=1 -s PRECISE_F32=1 -s TOTAL_MEMORY=256mb -s ENVIRONMENT=worker,web --shell-file template.html -Wfatal-errors --preload-file .art[00].zip@index.zip -lidbfs.js
+call emcc %* -g ..\..\engine\v4k.c -I..\..\engine -o index.html -pthread -s FULL_ES3 -s USE_PTHREADS -s USE_GLFW=3 -s SINGLE_FILE=1 -s PRECISE_F32=1 -s TOTAL_MEMORY=256mb -s ALLOW_MEMORY_GROWTH=1 -s ENVIRONMENT=worker,web --shell-file template.html -Wfatal-errors --preload-file .art[00].zip@index.zip -lidbfs.js
 rem emrun index.html

demos/html5/demo_ddraw.c

@@ -0,0 +1,103 @@
+#include "v4k.h"
+
+// -- demo
+
+int paused;
+camera_t cam;
+skybox_t sky;
+bool do_boids_demo = 1;
+bool do_colliders_demo = 1;
+bool do_debugdraw_demo = 1;
+    
+void game_loop(void *userdata) {
+    // fps camera
+        profile("FPS camera") {
+            if( input(GAMEPAD_CONNECTED) ) {
+                vec2 filtered_lpad = input_filter_deadzone(input2(GAMEPAD_LPAD), 0.15f/*do_gamepad_deadzone*/ + 1e-3 );
+                vec2 filtered_rpad = input_filter_deadzone(input2(GAMEPAD_RPAD), 0.15f/*do_gamepad_deadzone*/ + 1e-3 );
+                vec2 mouse = scale2(vec2(filtered_rpad.x, filtered_rpad.y), 1.0f);
+                vec3 wasdec = scale3(vec3(filtered_lpad.x, input(GAMEPAD_LT) - input(GAMEPAD_RT), filtered_lpad.y), 1.0f);
+                camera_move(&cam, wasdec.x,wasdec.y,wasdec.z);
+                camera_fps(&cam, mouse.x,mouse.y);
+                window_cursor( true );
+            } else {
+                bool active = ui_active() || ui_hover() || gizmo_active() ? false : input(MOUSE_L) || input(MOUSE_M) || input(MOUSE_R);
+                if( active ) cam.speed = clampf(cam.speed + input_diff(MOUSE_W) / 10, 0.05f, 5.0f);
+                vec2 mouse = scale2(vec2(input_diff(MOUSE_X), -input_diff(MOUSE_Y)), 0.2f * active);
+                vec3 wasdecq = scale3(vec3(input(KEY_D)-input(KEY_A),input(KEY_E)-(input(KEY_C)||input(KEY_Q)),input(KEY_W)-input(KEY_S)), cam.speed);
+                camera_move(&cam, wasdecq.x,wasdecq.y,wasdecq.z);
+                camera_fps(&cam, mouse.x,mouse.y);
+                window_cursor( !active );
+            }
+        }
+
+        // draw skybox
+        skybox_render(&sky, cam.proj, cam.view);
+
+        // world
+        ddraw_grid(0);
+
+        // boids
+        static swarm_t sw;
+        if( do_boids_demo ) profile("boids") {
+            do_once sw = swarm();
+            do_once array_push(sw.steering_targets, vec3(0,0,0));
+            do_once for(int i = 0; i < 100; ++i)
+                array_push(sw.boids, boid(scale3(rnd3(),10), rnd3())); // pos,vel
+
+            // move
+            sw.steering_targets[0] = cam.position;
+            swarm_update(&sw, window_delta());
+
+            // draw
+            for (int j = 0, end = array_count(sw.boids); j < end; ++j) {
+                vec3 dir = norm3(sub3(sw.boids[j].position, sw.boids[j].prev_position));
+                ddraw_boid(sw.boids[j].position, dir);
+            }
+        }
+
+        // showcase many debugdraw shapes
+        if( do_debugdraw_demo ) {
+            ddraw_demo();
+        }
+
+        // showcase many colliding tests
+        if( do_colliders_demo ) {
+            collide_demo();
+        }
+
+        // ui
+        if( ui_panel("App", 0) ) {
+            ui_bool("Boids demo", &do_boids_demo);
+            ui_bool("Collide demo", &do_colliders_demo);
+            ui_bool("DebugDraw demo", &do_debugdraw_demo);
+            ui_panel_end();
+        }
+        if( ui_panel("Swarm", 0) ) {
+            ui_swarm(&sw);
+            ui_panel_end();
+        }
+        if( ui_panel("Camera", 0)) {
+            if( ui_float("Speed", &cam.speed) ) {}
+            if( ui_float3("Position", cam.position.v3) ) {}
+            ui_panel_end();
+        }
+}
+
+
+int main(void) {
+    // 75% sized, msaa x4 enabled
+    window_create(1, 0);
+    window_title( "V4K - SPACE pauses simulation" );
+
+    // fx_load("fx**.fs");
+
+    // camera that points to origin
+    cam = camera();
+
+    // load up skybox
+    sky = skybox(0, 0);
+
+    // main loop
+    window_loop(game_loop, NULL);
+}

engine/joint/v4k.h

@@ -350331,7 +350331,7 @@ int window_frame_begin() {
     }
 
     // @transparent
-    static bool has_transparent_attrib = 0; do_once has_transparent_attrib = glfwGetWindowAttrib(window_handle(), GLFW_TRANSPARENT_FRAMEBUFFER) == GLFW_TRUE;
+    static bool has_transparent_attrib = 0; do_once ifdef(ems, false, has_transparent_attrib = glfwGetWindowAttrib(window_handle(), GLFW_TRANSPARENT_FRAMEBUFFER) == GLFW_TRUE);
     if( has_transparent_attrib ) may_render_stats = 0;
     // @transparent
 

engine/split/v4k_window.c

@@ -523,7 +523,7 @@ int window_frame_begin() {
     }
 
     // @transparent
-    static bool has_transparent_attrib = 0; do_once has_transparent_attrib = glfwGetWindowAttrib(window_handle(), GLFW_TRANSPARENT_FRAMEBUFFER) == GLFW_TRUE;
+    static bool has_transparent_attrib = 0; do_once ifdef(ems, false, has_transparent_attrib = glfwGetWindowAttrib(window_handle(), GLFW_TRANSPARENT_FRAMEBUFFER) == GLFW_TRUE);
     if( has_transparent_attrib ) may_render_stats = 0;
     // @transparent
 

engine/v4k.c

@@ -20935,7 +20935,7 @@ int window_frame_begin() {
     }
 
     // @transparent
-    static bool has_transparent_attrib = 0; do_once has_transparent_attrib = glfwGetWindowAttrib(window_handle(), GLFW_TRANSPARENT_FRAMEBUFFER) == GLFW_TRUE;
+    static bool has_transparent_attrib = 0; do_once ifdef(ems, false, has_transparent_attrib = glfwGetWindowAttrib(window_handle(), GLFW_TRANSPARENT_FRAMEBUFFER) == GLFW_TRUE);
     if( has_transparent_attrib ) may_render_stats = 0;
     // @transparent