From 3c5e99c777f8300b06e53ec3040446fb074473f5 Mon Sep 17 00:00:00 2001
From: Ryan Houdek <Sonicadvance1@gmail.com>
Date: Fri, 27 Feb 2015 19:38:51 -0600
Subject: [PATCH] Fix OpenGL ES 3.1 on non-Nvidia devices.

We are declaring we require ARB_shader_image_load_store in the shader, this isn't an extension on GLES because it is part of the GLSL ES 3.1 spec.
If we are running as GLES then just not put it in the shaders.
---
 Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp b/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp
index e0f0eac72d..01b0af3f45 100644
--- a/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp
+++ b/Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp
@@ -516,6 +516,7 @@ void ProgramShaderCache::Shutdown()
 void ProgramShaderCache::CreateHeader()
 {
 	GLSL_VERSION v = g_ogl_config.eSupportedGLSLVersion;
+	bool is_glsles = v >= GLSLES_300;
 
 	snprintf(s_glsl_header, sizeof(s_glsl_header),
 		"%s\n"
@@ -556,7 +557,7 @@ void ProgramShaderCache::CreateHeader()
 
 		, GetGLSLVersionString().c_str()
 		, v<GLSL_140 ? "#extension GL_ARB_uniform_buffer_object : enable" : ""
-		, g_ActiveConfig.backend_info.bSupportsEarlyZ ? "#extension GL_ARB_shader_image_load_store : enable" : ""
+		, !is_glsles && g_ActiveConfig.backend_info.bSupportsEarlyZ ? "#extension GL_ARB_shader_image_load_store : enable" : ""
 		, (g_ActiveConfig.backend_info.bSupportsBindingLayout && v < GLSLES_310) ? "#extension GL_ARB_shading_language_420pack : enable" : ""
 		, (g_ogl_config.bSupportsMSAA && v < GLSL_150) ? "#extension GL_ARB_texture_multisample : enable" : ""
 		, (g_ogl_config.bSupportSampleShading) ? "#extension GL_ARB_sample_shading : enable" : ""
@@ -566,9 +567,9 @@ void ProgramShaderCache::CreateHeader()
 		, g_ogl_config.bSupportsAEP ? "#extension GL_ANDROID_extension_pack_es31a : enable" : ""
 		, v<GLSL_140 && g_ActiveConfig.backend_info.bSupportsPaletteConversion ? "#extension GL_ARB_texture_buffer_object : enable" : ""
 
-		, v>=GLSLES_300 ? "precision highp float;" : ""
-		, v>=GLSLES_300 ? "precision highp int;" : ""
-		, v>=GLSLES_300 ? "precision highp sampler2DArray;" : ""
+		, is_glsles ? "precision highp float;" : ""
+		, is_glsles ? "precision highp int;" : ""
+		, is_glsles ? "precision highp sampler2DArray;" : ""
 
 		, DriverDetails::HasBug(DriverDetails::BUG_BROKENTEXTURESIZE) ? "#define textureSize(x, y) ivec2(1, 1)" : ""
 		, DriverDetails::HasBug(DriverDetails::BUG_BROKENCENTROID) ? "#define centroid" : ""