emscripten: detect and start configuring accordingly

module/glcompat.h

@@ -29,6 +29,10 @@
 
 	#define RENPY_GLES_2
 
+#elif defined EMSCRIPTEN
+
+	#define RENPY_GLES_2
+
 #elif defined RASPBERRY_PI
 
     #define RENPY_GLES_2

module/setup.py

@@ -55,7 +55,7 @@ def setup_env(name):
 setup_env("CXX")
 
 import setuplib
-from setuplib import android, ios, raspi, include, library, cython, cmodule, copyfile, find_unnecessary_gen
+from setuplib import android, ios, emscripten, raspi, include, library, cython, cmodule, copyfile, find_unnecessary_gen
 
 # These control the level of optimization versus debugging.
 setuplib.extra_compile_args = [ "-Wno-unused-function" ]
@@ -189,6 +189,10 @@ def setup_env(name):
     glew_libs = [ 'GLESv2', 'z', 'm' ]
     gl2_only = True
     egl = "egl_none.c"
+elif emscripten:
+    glew_libs = []
+    gl2_only = True
+    egl = "egl_none.c"
 elif raspi:
     glew_libs = [ 'SDL2', 'GLESv2', 'EGL', 'z', 'm' ]
     gl2_only = True
@@ -212,7 +216,7 @@ def setup_env(name):
 cython("renpy.gl.glrtt_copy", libs=glew_libs)
 cython("renpy.gl.glrtt_fbo", libs=glew_libs)
 
-if not (android or ios):
+if not (android or ios or emscripten):
     # renpy.angle
     def anglecopy(fn):
         copyfile("renpy/gl/" + fn, "renpy/angle/" + fn, "DEF ANGLE = False", "DEF ANGLE = True")

module/setuplib.py

@@ -39,6 +39,9 @@
 # True of we're building on raspberry pi.
 raspi = "RENPY_RASPBERRY_PI" in os.environ
 
+# True of we're building with emscripten.
+emscripten = "RENPY_EMSCRIPTEN" in os.environ
+
 # Is coverage enabled?
 coverage = "RENPY_COVERAGE" in os.environ
 
@@ -92,7 +95,7 @@ def include(header, directory=None, optional=True):
         If given, returns False rather than abandoning the process.
     """
 
-    if android or ios:
+    if android or ios or emscripten:
         return True
 
     for i in install:
@@ -131,7 +134,7 @@ def library(name, optional=False):
         rather than reporting an error.
     """
 
-    if android or ios:
+    if android or ios or emscripten:
         return True
 
     for i in install:

renpy/__init__.py

@@ -70,6 +70,7 @@
 linux = False
 android = False
 ios = False
+emscripten = False
 
 # Should we enable experimental features and debugging?
 experimental = "RENPY_EXPERIMENTAL" in os.environ
@@ -121,11 +122,13 @@ class OSVERSIONINFOEXW(ctypes.Structure):
     macintosh = True
 elif "ANDROID_PRIVATE" in os.environ:
     android = True
+elif sys.platform == 'emscripten':
+    emscripten = True
 else:
     linux = True
 
 # A flag that's true if we're on a smartphone or tablet-like platform.
-mobile = android or ios
+mobile = android or ios or emscripten
 
 # A flag that's set to true if the game directory is bundled inside a mac app.
 macapp = False

renpy/config.py

@@ -27,6 +27,7 @@
 
 import collections
 import os
+import renpy
 
 # Can we add more config variables?
 locked = False
@@ -806,6 +807,8 @@
 
 # Should the audio periodic callback run in its own thread.
 audio_periodic_thread = True
+if renpy.emscripten:
+    audio_periodic_thread = False
 
 # A list of fonts to preload on Ren'Py startup.
 preload_fonts = [ ]

renpy/exports.py

@@ -1783,6 +1783,8 @@ def version(tuple=False):  # @ReservedAssignment
         platform = "Android"
     elif renpy.ios:
         platform = "iOS"
+    elif sys.platform == "emscripten":
+        platform = "emscripten"
     else:
         platform = "Unknown"
 

renpy/gl/gldraw.pyx

@@ -557,7 +557,7 @@ cdef class GLDraw:
 
         # Pick a texture environment subsystem.
 
-        if EGL or renpy.android or renpy.ios or (allow_shader and use_subsystem(
+        if EGL or renpy.android or renpy.ios or renpy.emscripten or (allow_shader and use_subsystem(
             glenviron_shader,
             "RENPY_GL_ENVIRON",
             "shader",