gl: Get maxTextureLayers on versions 3.0 and up (#2749)

src/renderer_gl.cpp

@@ -2829,7 +2829,7 @@ namespace bgfx { namespace gl
 					;
 
 				g_caps.limits.maxTextureSize     = uint16_t(glGet(GL_MAX_TEXTURE_SIZE) );
-				g_caps.limits.maxTextureLayers   = BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGL >= 31) || BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGLES >= 31) || s_extension[Extension::EXT_texture_array].m_supported ? uint16_t(bx::max(glGet(GL_MAX_ARRAY_TEXTURE_LAYERS), 1) ) : 1;
+				g_caps.limits.maxTextureLayers   = BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGL >= 30) || BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGLES >= 30) || s_extension[Extension::EXT_texture_array].m_supported ? uint16_t(bx::max(glGet(GL_MAX_ARRAY_TEXTURE_LAYERS), 1) ) : 1;
 				g_caps.limits.maxComputeBindings = computeSupport ? BGFX_MAX_COMPUTE_BINDINGS : 0;
 				g_caps.limits.maxVertexStreams   = BGFX_CONFIG_MAX_VERTEX_STREAMS;