diff --git a/app/src/main/tinywrapper/basevertex.c b/app/src/main/tinywrapper/basevertex.c
index b85c783..8bdfc1b 100644
--- a/app/src/main/tinywrapper/basevertex.c
+++ b/app/src/main/tinywrapper/basevertex.c
@@ -16,6 +16,10 @@ typedef struct {
 
 void basevertex_init(context_t* context) {
     basevertex_renderer_t *renderer = &context->basevertex;
+    if(!context->es31) {
+        printf("LTW: BaseVertex render calls not available: requires OpenGL ES 3.1\n");
+        return;
+    }
     es3_functions.glGenBuffers(1, &renderer->indirectRenderBuffer);
     GLenum error = es3_functions.glGetError();
     if(error != GL_NO_ERROR) {
diff --git a/app/src/main/tinywrapper/es3_extended.h b/app/src/main/tinywrapper/es3_extended.h
index eea3337..b727466 100644
--- a/app/src/main/tinywrapper/es3_extended.h
+++ b/app/src/main/tinywrapper/es3_extended.h
@@ -3,4 +3,4 @@ GLESFUNC(glDrawElementsIndirect,PFNGLDRAWELEMENTSINDIRECTPROC)
 GLESFUNC(glMultiDrawArraysEXT,PFNGLMULTIDRAWARRAYSEXTPROC)
 GLESFUNC(glMultiDrawElementsEXT,PFNGLMULTIDRAWELEMENTSEXTPROC)
 GLESFUNC(glGetTexLevelParameteriv,PFNGLGETTEXLEVELPARAMETERIVPROC)
-GLESFUNC(glGetTexLevelParameterfv,PFNGLGETTEXLEVELPARAMETERIVPROC)
\ No newline at end of file
+GLESFUNC(glGetTexLevelParameterfv,PFNGLGETTEXLEVELPARAMETERFVPROC)
\ No newline at end of file
diff --git a/app/src/main/tinywrapper/es3_overrides.h b/app/src/main/tinywrapper/es3_overrides.h
index f04a372..1a84d33 100644
--- a/app/src/main/tinywrapper/es3_overrides.h
+++ b/app/src/main/tinywrapper/es3_overrides.h
@@ -35,6 +35,7 @@ void glDepthRange(GLdouble nearVal,
 GLESOVERRIDE(glClearDepth)
 GLESOVERRIDE(glMapBuffer)
 GLESOVERRIDE(glGetTexLevelParameteriv)
+GLESOVERRIDE(glGetTexLevelParameterfv)
 GLESOVERRIDE(glCreateShader)
 GLESOVERRIDE(glDeleteShader)
 GLESOVERRIDE(glShaderSource)
diff --git a/app/src/main/tinywrapper/glsl_optimizer/src/code/ir_print_glsl_visitor.cpp b/app/src/main/tinywrapper/glsl_optimizer/src/code/ir_print_glsl_visitor.cpp
index 394d4a4..5b2f174 100644
--- a/app/src/main/tinywrapper/glsl_optimizer/src/code/ir_print_glsl_visitor.cpp
+++ b/app/src/main/tinywrapper/glsl_optimizer/src/code/ir_print_glsl_visitor.cpp
@@ -792,7 +792,8 @@ const char* const operator_glsl_strs[] = {
    "vector_extract_TODO",
    "interpolate_at_offse_TODOt",
    "interpolate_at_sample_TODO",
-   "atan2",
+   // NOTE: atan2 operation, replaced with atan(x,y)
+   "atan",
    "fma",
    "mix", // lrp ?
    "csel",
@@ -937,7 +938,8 @@ const char* const operator_glsl_enum_strs[] = {
    "vector_extract",
    "interpolate_at_offset",
    "interpolate_at_sample",
-   "atan2",
+        // NOTE: atan2 operation, replaced with atan(x,y)
+   "atan",
    "fma",
    "lrp",
    "csel",
@@ -961,7 +963,7 @@ static bool is_binop_func_like(ir_expression_operation op, const glsl_type* type
 {
 	if (op == ir_binop_equal ||
 		op == ir_binop_nequal ||
-		op == ir_binop_mod ||
+		op == ir_binop_mod || op == ir_binop_atan2 ||
 		(op >= ir_binop_dot && op <= ir_binop_pow))
 		return true;
 	if (type->is_vector() && (op >= ir_binop_less && op <= ir_binop_nequal))
diff --git a/app/src/main/tinywrapper/glsl_optimizer/src/compiler/glsl/glsl_parser_extras.cpp b/app/src/main/tinywrapper/glsl_optimizer/src/compiler/glsl/glsl_parser_extras.cpp
index 4a4173e..a77f580 100644
--- a/app/src/main/tinywrapper/glsl_optimizer/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/app/src/main/tinywrapper/glsl_optimizer/src/compiler/glsl/glsl_parser_extras.cpp
@@ -227,7 +227,6 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
     * outside the compatibility contexts of 3.x.
     */
    this->num_supported_versions = 0;
-   printf("mesa_glsl: is_desktop=%i GLSLVersion=%i\n", _mesa_is_desktop_gl(ctx), ctx->Const.GLSLVersion);
    if (_mesa_is_desktop_gl(ctx)) {
       for (unsigned i = 0; i < ARRAY_SIZE(known_desktop_glsl_versions); i++) {
          if (known_desktop_glsl_versions[i] <= ctx->Const.GLSLVersion) {
diff --git a/app/src/main/tinywrapper/main.c b/app/src/main/tinywrapper/main.c
index 1d3163f..d7098bf 100644
--- a/app/src/main/tinywrapper/main.c
+++ b/app/src/main/tinywrapper/main.c
@@ -32,11 +32,11 @@ void *glMapBuffer(GLenum target, GLenum access) {
         case GL_SHADER_STORAGE_BUFFER:
         // GL 4.4
         case GL_QUERY_BUFFER:
-            printf("ERROR: glMapBuffer unsupported target=0x%x", target);
+            printf("ERROR: glMapBuffer unsupported target=0x%x\n", target);
             break; // not supported for now
 	    case GL_DRAW_INDIRECT_BUFFER:
         case GL_TEXTURE_BUFFER:
-            printf("ERROR: glMapBuffer unimplemented target=0x%x", target);
+            printf("ERROR: glMapBuffer unimplemented target=0x%x\n", target);
             break;
     }
 
@@ -79,30 +79,49 @@ static int inline nlevel(int size, int level) {
 
 static bool trigger_texlevelparameter = false;
 
+static bool check_texlevelparameter() {
+    if(current_context->es31) return true;
+    if(trigger_texlevelparameter) return false;
+    printf("glGetTexLevelParameter* functions are not supported below OpenGL ES 3.1\n");
+    trigger_texlevelparameter = true;
+    return false;
+}
+
+static void proxy_getlevelparameter(GLenum target, GLint level, GLenum pname, GLint *params) {
+    switch (pname) {
+        case GL_TEXTURE_WIDTH:
+            (*params) = nlevel(current_context->proxy_width, level);
+            break;
+        case GL_TEXTURE_HEIGHT:
+            (*params) = nlevel(current_context->proxy_height, level);
+            break;
+        case GL_TEXTURE_INTERNAL_FORMAT:
+            (*params) = current_context->proxy_intformat;
+            break;
+    }
+}
+
+void glGetTexLevelParameterfv(GLenum target, GLint level, GLenum pname, GLfloat *params) {
+    if(!current_context) return;
+    if(isProxyTexture(target)) {
+        GLint param = 0;
+        proxy_getlevelparameter(target, level, pname, &param);
+        *params = (GLfloat) param;
+        return;
+    }
+    if(!check_texlevelparameter()) return;
+    es3_functions.glGetTexLevelParameterfv(target, level, pname, params);
+}
+
 void glGetTexLevelParameteriv(GLenum target, GLint level, GLenum pname, GLint *params) {
     if(!current_context) return;
-    // NSLog("glGetTexLevelParameteriv(%x, %d, %x, %p)", target, level, pname, params);
     if (isProxyTexture(target)) {
-        switch (pname) {
-            case GL_TEXTURE_WIDTH:
-                (*params) = nlevel(current_context->proxy_width, level);
-                break;
-            case GL_TEXTURE_HEIGHT:
-                (*params) = nlevel(current_context->proxy_height, level);
-                break;
-            case GL_TEXTURE_INTERNAL_FORMAT:
-                (*params) = current_context->proxy_intformat;
-                break;
-        }
-    } else {
-        if(trigger_texlevelparameter) return;
-        if(!current_context->es31) {
-            printf("glGetTexLevelParameter* functions are not supported on your device");
-            trigger_texlevelparameter = true;
-            return;
-        }
-        es3_functions.glGetTexLevelParameteriv(target, level, pname, params);
+        proxy_getlevelparameter(target, level, pname, params);
+        return;
     }
+    if(!check_texlevelparameter()) return;
+    es3_functions.glGetTexLevelParameteriv(target, level, pname, params);
+
 }
 
 void glTexImage2D(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *data) {
diff --git a/app/src/main/tinywrapper/of_buffer_copier.c b/app/src/main/tinywrapper/of_buffer_copier.c
index de1fc7b..6893d08 100644
--- a/app/src/main/tinywrapper/of_buffer_copier.c
+++ b/app/src/main/tinywrapper/of_buffer_copier.c
@@ -72,8 +72,25 @@ void glGetTexImage( 	GLenum target,
                        GLenum format,
                        GLenum type,
                        void * pixels) {
-    //printf("glGetTexImage(%x, %i, %x, %x, %p)\n", target, level, format, type, pixels);
-    printf("LTW: glGetTexImage is not supported yet\n");
+    if(!current_context) return;
+    if(!current_context->es31) goto unsupported_esver;
+    if(format != GL_RGBA && format != GL_RGBA_INTEGER && type != GL_UNSIGNED_BYTE && type != GL_UNSIGNED_INT && type != GL_INT && type != GL_FLOAT) goto unsupported;
+    framebuffer_copier_t* copier = &current_context->framebuffer_copier;
+    GLint texture;
+    es3_functions.glGetIntegerv(get_target_query_param(target), &texture);
+    es3_functions.glBindFramebuffer(GL_READ_FRAMEBUFFER, copier->tempfb);
+    es3_functions.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, texture, level);
+    GLint w, h;
+    es3_functions.glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &w);
+    es3_functions.glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &h);
+    es3_functions.glReadPixels(0, 0, w, h, format, type, pixels);
+    es3_functions.glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, 0);
+    return;
+    unsupported_esver:
+    printf("LTW: glGetTexImage only supported on OpenGL ES 3.1");
+    return;
+    unsupported:
+    printf("LTW: unsupported parameters for glGetTexImage");
 }
 
 void glReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid * data) {
diff --git a/app/src/main/tinywrapper/shader_wrapper.c b/app/src/main/tinywrapper/shader_wrapper.c
index 6035f16..f987228 100644
--- a/app/src/main/tinywrapper/shader_wrapper.c
+++ b/app/src/main/tinywrapper/shader_wrapper.c
@@ -170,7 +170,7 @@ void glShaderSource(GLuint shader, GLsizei count, const GLchar *const*string, co
     target_string[target_length] = 0;
 
 #undef SRC_LEN
-    GLchar* new_source = optimize_shader(target_string, shader_info->shader_type == GL_VERTEX_SHADER, 410, 300);
+    GLchar* new_source = optimize_shader(target_string, shader_info->shader_type == GL_VERTEX_SHADER, 460, 300);
     //printf("\n\n\nShader Result\n%s\n\n\n", new_source);
     if(shader_info->source != NULL) free((void*)shader_info->source);
     shader_info->source = new_source;