diff --git a/src/client/graphics/webgl_context.hpp b/src/client/graphics/webgl_context.hpp
index 32567de43..a95796004 100644
--- a/src/client/graphics/webgl_context.hpp
+++ b/src/client/graphics/webgl_context.hpp
@@ -101,6 +101,9 @@ namespace endor
       kStencilTest = WEBGL_STENCIL_TEST,
       kUnpackFlipY = WEBGL_UNPACK_FLIP_Y_WEBGL,
       kUnpackPremultiplyAlpha = WEBGL_UNPACK_PREMULTIPLY_ALPHA_WEBGL,
+      kSampleAlphaToCoverage = WEBGL_SAMPLE_ALPHA_TO_COVERAGE,
+      kSampleCoverage = WEBGL_SAMPLE_COVERAGE,
+      kRasterizerDiscard = WEBGL2_RASTERIZER_DISCARD,
     };
 
     enum class WebGLFloatParameterName
@@ -217,6 +220,35 @@ namespace endor
       kMaxUniformBlockSize = WEBGL2_MAX_UNIFORM_BLOCK_SIZE,
       kMaxTextureLodBias = WEBGL2_MAX_TEXTURE_LOD_BIAS,
       kExtMaxViewsOvr = WEBGL2_EXT_MAX_VIEWS_OVR,
+      // Pixel store parameters
+      kPackRowLength = WEBGL2_PACK_ROW_LENGTH,
+      kPackSkipPixels = WEBGL2_PACK_SKIP_PIXELS,
+      kPackSkipRows = WEBGL2_PACK_SKIP_ROWS,
+      kUnpackRowLength = WEBGL2_UNPACK_ROW_LENGTH,
+      kUnpackImageHeight = WEBGL2_UNPACK_IMAGE_HEIGHT,
+      kUnpackSkipPixels = WEBGL2_UNPACK_SKIP_PIXELS,
+      kUnpackSkipRows = WEBGL2_UNPACK_SKIP_ROWS,
+      kUnpackSkipImages = WEBGL2_UNPACK_SKIP_IMAGES,
+      // Other state parameters
+      kFragmentShaderDerivativeHint = WEBGL2_FRAGMENT_SHADER_DERIVATIVE_HINT,
+      kReadBuffer = WEBGL2_READ_BUFFER,
+      kDrawBuffer0 = WEBGL2_DRAW_BUFFER0,
+      kDrawBuffer1 = WEBGL2_DRAW_BUFFER1,
+      kDrawBuffer2 = WEBGL2_DRAW_BUFFER2,
+      kDrawBuffer3 = WEBGL2_DRAW_BUFFER3,
+      kDrawBuffer4 = WEBGL2_DRAW_BUFFER4,
+      kDrawBuffer5 = WEBGL2_DRAW_BUFFER5,
+      kDrawBuffer6 = WEBGL2_DRAW_BUFFER6,
+      kDrawBuffer7 = WEBGL2_DRAW_BUFFER7,
+      kDrawBuffer8 = WEBGL2_DRAW_BUFFER8,
+      kDrawBuffer9 = WEBGL2_DRAW_BUFFER9,
+      kDrawBuffer10 = WEBGL2_DRAW_BUFFER10,
+      kDrawBuffer11 = WEBGL2_DRAW_BUFFER11,
+      kDrawBuffer12 = WEBGL2_DRAW_BUFFER12,
+      kDrawBuffer13 = WEBGL2_DRAW_BUFFER13,
+      kDrawBuffer14 = WEBGL2_DRAW_BUFFER14,
+      kDrawBuffer15 = WEBGL2_DRAW_BUFFER15,
+      kUniformBufferOffsetAlignment = WEBGL2_UNIFORM_BUFFER_OFFSET_ALIGNMENT,
     };
 
     class ContextAttributes final
diff --git a/src/client/script_bindings/webgl/webgl_rendering_context.cpp b/src/client/script_bindings/webgl/webgl_rendering_context.cpp
index 7c9351388..bb852fe66 100644
--- a/src/client/script_bindings/webgl/webgl_rendering_context.cpp
+++ b/src/client/script_bindings/webgl/webgl_rendering_context.cpp
@@ -4353,6 +4353,9 @@ namespace endor
         case WEBGL_STENCIL_TEST:
         case WEBGL_UNPACK_FLIP_Y_WEBGL:
         case WEBGL_UNPACK_PREMULTIPLY_ALPHA_WEBGL:
+        case WEBGL_SAMPLE_ALPHA_TO_COVERAGE:
+        case WEBGL_SAMPLE_COVERAGE:
+        case WEBGL2_RASTERIZER_DISCARD:
         {
           jsValue = Boolean::New(isolate,
                                  handle()->getParameter(static_cast<client_graphics::WebGLBooleanParameterName>(pname)));
@@ -4423,6 +4426,33 @@ namespace endor
           case WEBGL2_MAX_UNIFORM_BLOCK_SIZE:
           case WEBGL2_MAX_TEXTURE_LOD_BIAS:
           case WEBGL2_EXT_MAX_VIEWS_OVR:
+          case WEBGL2_PACK_ROW_LENGTH:
+          case WEBGL2_PACK_SKIP_PIXELS:
+          case WEBGL2_PACK_SKIP_ROWS:
+          case WEBGL2_UNPACK_ROW_LENGTH:
+          case WEBGL2_UNPACK_IMAGE_HEIGHT:
+          case WEBGL2_UNPACK_SKIP_PIXELS:
+          case WEBGL2_UNPACK_SKIP_ROWS:
+          case WEBGL2_UNPACK_SKIP_IMAGES:
+          case WEBGL2_FRAGMENT_SHADER_DERIVATIVE_HINT:
+          case WEBGL2_READ_BUFFER:
+          case WEBGL2_DRAW_BUFFER0:
+          case WEBGL2_DRAW_BUFFER1:
+          case WEBGL2_DRAW_BUFFER2:
+          case WEBGL2_DRAW_BUFFER3:
+          case WEBGL2_DRAW_BUFFER4:
+          case WEBGL2_DRAW_BUFFER5:
+          case WEBGL2_DRAW_BUFFER6:
+          case WEBGL2_DRAW_BUFFER7:
+          case WEBGL2_DRAW_BUFFER8:
+          case WEBGL2_DRAW_BUFFER9:
+          case WEBGL2_DRAW_BUFFER10:
+          case WEBGL2_DRAW_BUFFER11:
+          case WEBGL2_DRAW_BUFFER12:
+          case WEBGL2_DRAW_BUFFER13:
+          case WEBGL2_DRAW_BUFFER14:
+          case WEBGL2_DRAW_BUFFER15:
+          case WEBGL2_UNIFORM_BUFFER_OFFSET_ALIGNMENT:
           {
             auto value = handle<client_graphics::WebGL2Context>()
                            ->getParameterV2(static_cast<client_graphics::WebGL2IntegerParameterName>(pname));