add wasigl

build.zig

@@ -205,8 +205,9 @@ fn compileRaylib(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.
     if (options.rmodels) {
         try c_source_files.append("src/rmodels.c");
     }
-    raylib_mod.addCMacro("SUPPORT_MODULE_RAUDIO", &.{@as(u8, @intFromBool(options.raudio)) + 0x30});
-    if (options.raudio) {
+    const raudio_enabled = options.raudio and options.platform != .wasigl;
+    raylib_mod.addCMacro("SUPPORT_MODULE_RAUDIO", &.{@as(u8, @intFromBool(raudio_enabled)) + 0x30});
+    if (raudio_enabled) {
         try c_source_files.append("src/raudio.c");
     }
 
@@ -361,6 +362,12 @@ fn compileRaylib(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.
             raylib_mod.addCMacro(OpenglVersion.gl_soft.toCMacroStr(), "");
             raylib_mod.addCMacro("PLATFORM_MEMORY", "");
         },
+        .wasigl => {
+            raylib_mod.addCMacro("PLATFORM_WASIGL", "");
+            raylib_mod.addCMacro("GRAPHICS_API_OPENGL_ES2", "");
+            raylib_mod.addIncludePath(b.path("src/external/glfw/include"));
+            raylib.import_symbols = true;
+        },
         .win32 => {
             if (target.result.os.tag != .windows) {
                 @panic("Target is not supported with this platform");
@@ -573,17 +580,7 @@ pub const LinuxDisplayBackend = enum {
     Both,
 };
 
-pub const PlatformBackend = enum {
-    glfw,
-    rgfw,
-    sdl,
-    sdl2,
-    sdl3,
-    memory,
-    win32,
-    drm,
-    android,
-};
+pub const PlatformBackend = enum { glfw, rgfw, sdl, sdl2, sdl3, memory, win32, drm, android, wasigl };
 
 fn translateCMod(
     comptime header: []const u8,
@@ -687,6 +684,7 @@ fn addExamples(
         }
         if (std.mem.eql(u8, filename, "raylib_opengl_interop")) {
             if (platform == .drm) continue;
+            if (platform == .wasigl) continue;
             if (target.result.os.tag == .macos) continue;
             exe_mod.addIncludePath(b.path("src/external"));
         }
@@ -794,4 +792,3 @@ fn waylandGenerate(
         }
     }
 }
-

src/Makefile

@@ -578,6 +578,14 @@ ifeq ($(TARGET_PLATFORM),PLATFORM_ANDROID)
     endif
 endif
 
+ifeq ($(PLATFORM),PLATFORM_WASIGL)
+    WASI_SDK ?= /opt/wasi-sdk
+    CC = $(WASI_SDK)/bin/clang
+    AR = $(WASI_SDK)/bin/llvm-ar
+    LDFLAGS += -Wl,--allow-undefined
+    CFLAGS += -DPLATFORM_WASIGL -DGRAPHICS_API_OPENGL_ES2 
+endif
+
 # Define library paths containing required libs: LDFLAGS
 # NOTE: This is only required for dynamic library generation
 #------------------------------------------------------------------------------------------------

src/platforms/rcore_wasigl.c

@@ -0,0 +1 @@
+#include "./rcore_desktop_glfw.c"

src/rcore.c

@@ -33,6 +33,8 @@
 *           - Android (ARM, ARM64)
 *       > PLATFORM_MEMORY
 *           - Memory framebuffer output, using software renderer, no OS required
+*       > PLATFORM_WASIGL
+*           - WASM that imports GL/GLFW from host
 *
 *   CONFIGURATION:
 *       #define SUPPORT_CAMERA_SYSTEM       1
@@ -528,6 +530,8 @@ const char *TextFormat(const char *text, ...); // Formatting of text with variab
     #include "platforms/rcore_android.c"
 #elif defined(PLATFORM_MEMORY)
     #include "platforms/rcore_memory.c"
+#elif defined(PLATFORM_WASIGL)
+    #include "platforms/rcore_wasigl.c"
 #else
     // TODO: Include your custom platform backend!
     // i.e software rendering backend or console backend!

src/rlgl.h

@@ -883,7 +883,7 @@ RLAPI void rlLoadDrawQuad(void);     // Load and draw a quad
     // NOTE: OpenGL ES 2.0 can be enabled on Desktop platforms,
     // in that case, functions are loaded from a custom glad for OpenGL ES 2.0
     // TODO: OpenGL ES 2.0 support shouldn't be platform-dependent, neither require GLAD
-    #if defined(PLATFORM_DESKTOP_GLFW) || defined(PLATFORM_DESKTOP_SDL)
+    #if defined(PLATFORM_DESKTOP_GLFW) || defined(PLATFORM_DESKTOP_SDL) || defined(PLATFORM_WASIGL)
         #define GLAD_GLES2_IMPLEMENTATION
         #include "external/glad_gles2.h"
     #else
@@ -2484,7 +2484,7 @@ void rlLoadExtensions(void *loader)
 
 #elif defined(GRAPHICS_API_OPENGL_ES2)
 
-    #if defined(PLATFORM_DESKTOP_GLFW) || defined(PLATFORM_DESKTOP_SDL)
+    #if defined(PLATFORM_DESKTOP_GLFW) || defined(PLATFORM_DESKTOP_SDL) || defined(PLATFORM_WASIGL)
     // TODO: Support GLAD loader for OpenGL ES 3.0
     if (gladLoadGLES2((GLADloadfunc)loader) == 0) TRACELOG(RL_LOG_WARNING, "GLAD: Cannot load OpenGL ES2.0 functions");
     else TRACELOG(RL_LOG_INFO, "GLAD: OpenGL ES 2.0 loaded successfully");