opengles and emscripten shader version unsupported

Question

i am trying to target opengles #version 300 es through emscripten, but the compilation gives error unsupported shader version.

i am using emscripten version 2.0.6.

the emmake command i am using (taken reference from (here)),

$emcmake cmake ../ -DUSE_EMSCRIPTEN=1 -DCMAKE_FIND_ROOT_PATH=/ -DCMAKE_CXX_FLAGS="-sFULL_ES3 -sUSE_WEBGL2 -s MAX_WEBGL_VERSION=2 --preload-file vertex.vs --preload-file fragment.fs --preload-file test.jpg -O1 -std=c++17 --profiling -pthread -s FETCH=1 -s WASM=1 -s NO_EXIT_RUNTIME=1 -s INITIAL_MEMORY=1000MB -s USE_PTHREADS=1 -s PTHREAD_POOL_SIZE=20 -s \"EXTRA_EXPORTED_RUNTIME_METHODS=['ccall']\" -s DISABLE_EXCEPTION_CATCHING=0 --bind -s USE_SDL=2"

my vertex shader code:

#version 300 es

in vec3 position;    
in vec4 color;
in vec3 normal;
in vec2 uv;

out vec4 v_color;
out vec3 v_normal;
out vec2 v_uv;

uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;
   
void main()                  
{  
   v_color = color;
   v_normal = normal;
   v_uv = uv;
                             
   gl_Position = projection * view * transpose(model) * vec4(position.xyz, 1.0);  
}            

what could be the reason here?

Edit: i guess this explains it, not sure though

Answer 1

The problem is most likely not in the shader code itself. Are you requesting OpenGL ES 3.0 (WebGL 2) when creating the OpenGL ES context?