diff --git a/code/def_files/data/effects/batched-f.sdr b/code/def_files/data/effects/batched-f.sdr
index 660787fe4e2..90e4f4a759f 100644
--- a/code/def_files/data/effects/batched-f.sdr
+++ b/code/def_files/data/effects/batched-f.sdr
@@ -1,3 +1,8 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2DArray;
+#endif
 
 #include "gamma.sdr"
 
@@ -17,7 +22,7 @@ layout (set = 2, binding = 0, std140) uniform genericData {
 in vec4 fragTexCoord;
 in vec4 fragColor;
 
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2DArray baseMap;
 
diff --git a/code/def_files/data/effects/batched-v.sdr b/code/def_files/data/effects/batched-v.sdr
index 9f1efb6f213..e4ec4e6958d 100644
--- a/code/def_files/data/effects/batched-v.sdr
+++ b/code/def_files/data/effects/batched-v.sdr
@@ -1,3 +1,8 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+#endif
+
 #ifdef VULKAN
 layout (location = 0) in vec4 vertPosition;
 layout (location = 1) in vec4 vertColor;
diff --git a/code/def_files/data/effects/bloom-comp-f.sdr b/code/def_files/data/effects/bloom-comp-f.sdr
index 20d8859a643..ea138b655bf 100644
--- a/code/def_files/data/effects/bloom-comp-f.sdr
+++ b/code/def_files/data/effects/bloom-comp-f.sdr
@@ -1,3 +1,8 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
@@ -5,7 +10,9 @@ layout(location = 0) out vec4 fragOut0;
 layout(set = 1, binding = 1) uniform sampler2D bloomed;
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+
+layout(location=0) out vec4 fragOut0;
+
 uniform sampler2D bloomed;
 #endif
 
diff --git a/code/def_files/data/effects/blur-f.sdr b/code/def_files/data/effects/blur-f.sdr
index 8063b8e4e03..94e32e24b02 100644
--- a/code/def_files/data/effects/blur-f.sdr
+++ b/code/def_files/data/effects/blur-f.sdr
@@ -1,9 +1,15 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+#endif
+
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
 layout(location = 0) out vec4 fragOut0;
 layout(set = 1, binding = 1) uniform sampler2D tex;
 #else
-out vec4 fragOut0;
+layout (location=0) out vec4 fragOut0;
 in vec4 fragTexCoord;
 uniform sampler2D tex;
 #endif
diff --git a/code/def_files/data/effects/brightpass-f.sdr b/code/def_files/data/effects/brightpass-f.sdr
index e1632a23d13..0e46f41db7d 100644
--- a/code/def_files/data/effects/brightpass-f.sdr
+++ b/code/def_files/data/effects/brightpass-f.sdr
@@ -1,12 +1,19 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+#endif
+
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
 layout(location = 0) out vec4 fragOut0;
 layout(set = 1, binding = 1) uniform sampler2D tex;
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 uniform sampler2D tex;
 #endif
+
 const float Luminance = 0.08;
 const float fMiddleGray = 0.2;
 const float fWhiteCutoff = 0.4;
diff --git a/code/def_files/data/effects/copy-f.sdr b/code/def_files/data/effects/copy-f.sdr
index 28c29bdfac8..50df7b6bf4b 100644
--- a/code/def_files/data/effects/copy-f.sdr
+++ b/code/def_files/data/effects/copy-f.sdr
@@ -1,10 +1,17 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
+
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
 layout(location = 0) out vec4 fragOut0;
 layout(set = 1, binding = 1) uniform sampler2D tex;
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 #ifdef COPY_ARRAY
 uniform sampler2DArray tex;
 #else
diff --git a/code/def_files/data/effects/decal-f.sdr b/code/def_files/data/effects/decal-f.sdr
index 34d65a67ba8..6c1577bcd3d 100644
--- a/code/def_files/data/effects/decal-f.sdr
+++ b/code/def_files/data/effects/decal-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 // NOTE: The technique and some of this code is based on this tutorial:
 // http://martindevans.me/game-development/2015/02/27/Drawing-Stuff-On-Other-Stuff-With-Deferred-Screenspace-Decals/
@@ -29,9 +35,14 @@ layout (set = 1, binding = 1) uniform sampler2DArray decalTextures;
 layout (set = 1, binding = 4) uniform sampler2D gDepthBuffer;
 layout (set = 1, binding = 6) uniform sampler2D gNormalBuffer;
 #else
-out vec4 fragOut0; // Diffuse buffer
-out vec4 fragOut1; // Normal buffer
-out vec4 fragOut2; // Emissive buffer
+layout (location=0) out vec4 fragOut0; // Diffuse buffer
+#ifndef GL_ES
+layout (location=1) out vec4 fragOut1; // Normal buffer
+layout (location=2) out vec4 fragOut2; // Emissive buffer
+#else
+layout (location=2) out vec4 fragOut1; // Normal buffer   -> COLOR_ATTACHMENT2
+layout (location=4) out vec4 fragOut2; // Emissive buffer -> COLOR_ATTACHMENT4
+#endif
 
 flat in mat4 invModelMatrix;
 flat in vec3 decalDirection;
@@ -124,7 +135,7 @@ vec3 getPixelNormal(vec3 frag_position, vec2 tex_coord, inout float alpha, out v
 	}
 
 	// Make a smooth alpha transition leading up to an edge
-	alpha = alpha * (1 - smoothstep(angle_fade_start, normal_angle_cutoff, angle));
+	alpha = alpha * (1.0 - smoothstep(angle_fade_start, normal_angle_cutoff, angle));
 
 	return normal;
 }
diff --git a/code/def_files/data/effects/decal-v.sdr b/code/def_files/data/effects/decal-v.sdr
index 42d99146327..dcffcf6cfcc 100644
--- a/code/def_files/data/effects/decal-v.sdr
+++ b/code/def_files/data/effects/decal-v.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 // Binding 0: box vertex positions
diff --git a/code/def_files/data/effects/deferred-clear-f.sdr b/code/def_files/data/effects/deferred-clear-f.sdr
index 4d49695ef90..0f8fed7aa62 100644
--- a/code/def_files/data/effects/deferred-clear-f.sdr
+++ b/code/def_files/data/effects/deferred-clear-f.sdr
@@ -1,9 +1,17 @@
-out vec4 fragOut0;
-out vec4 fragOut1;
-out vec4 fragOut2;
-out vec4 fragOut3;
-out vec4 fragOut4;
-out vec4 fragOut5;
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
+
+layout (location=0) out vec4 fragOut0;
+layout (location=1) out vec4 fragOut1;
+layout (location=2) out vec4 fragOut2;
+layout (location=3) out vec4 fragOut3;
+layout (location=4) out vec4 fragOut4;
+layout (location=5) out vec4 fragOut5;
+
 void main()
 {
 	fragOut0 = vec4(0.0, 0.0, 0.0, 1.0); // color
diff --git a/code/def_files/data/effects/deferred-f.sdr b/code/def_files/data/effects/deferred-f.sdr
index fb5d9021ebd..86830fffb01 100644
--- a/code/def_files/data/effects/deferred-f.sdr
+++ b/code/def_files/data/effects/deferred-f.sdr
@@ -1,4 +1,13 @@
 //? #version 150
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+precision highp sampler2DArrayShadow;
+#endif
+
 #include "lighting.sdr" //! #include "lighting.sdr"
 #include "gamma.sdr" //! #include "gamma.sdr"
 #include "shadows.sdr" //! #include "shadows.sdr"
@@ -7,7 +16,11 @@
 #ifdef VULKAN
 layout(location = 0) out vec4 fragOut0;
 #else
-out vec4 fragOut0;
+#ifndef GL_ES
+layout(location = 0) out vec4 fragOut0;
+#else
+layout(location = 5) out vec4 fragOut0; //COLOR_ATTACHMENTn is on location n in ES
+#endif
 #endif
 
 #ifdef VULKAN
@@ -141,7 +154,7 @@ void GetLightInfo(vec3 position, in float alpha, in vec3 reflectDir, out vec3 li
 			dist = length(lightDirOut);
 			lightDist = dist;
 			// Energy conservation term
-			float alpha_adjust = clamp(alpha + (sourceRadius/(2*dist)), 0.0, 1.0);
+			float alpha_adjust = clamp(alpha + (sourceRadius/(2.0*dist)), 0.0, 1.0);
 			area_normalisation = alpha/alpha_adjust;
 			area_normalisation *= area_normalisation;
 			//end chunk
@@ -184,7 +197,7 @@ void GetLightInfo(vec3 position, in float alpha, in vec3 reflectDir, out vec3 li
 			float dist = length(lightDirOut);
 			lightDist = dist;
 			// Energy conservation term
-			float alpha_adjust = min(alpha + (sourceRadius/(2*dist)), 1.0);
+			float alpha_adjust = min(alpha + (sourceRadius/(2.0*dist)), 1.0);
 			area_normalisation = alpha/alpha_adjust;
 			// don't need to square as it's a line rather than a sphere.
 			//end chunk
@@ -231,11 +244,11 @@ void ComputeEnvLight(float alpha, float ao, vec3 light_dir, vec3 eyeDir, vec3 no
 	// so let s = (2/alpha^2 - 2)
 	// 1/2 log(s + 1) = 1/2 log(2/alpha^2 -1)
 
-	const float ENV_REZ = 512; // Ideally this would be #define'd and shader recompiled with envmap rez changes
-	const float REZ_BIAS = log2(ENV_REZ * sqrt(3));
+	const float ENV_REZ = 512.0; // Ideally this would be #define'd and shader recompiled with envmap rez changes
+	const float REZ_BIAS = log2(ENV_REZ * sqrt(3.0));
 
 	float alphaSqr = alpha * alpha;
-	float rough_bias = 0.5 * log2(2/alphaSqr - 1);
+	float rough_bias = 0.5 * log2(2.0/alphaSqr - 1.0);
 	float mip_bias = REZ_BIAS - rough_bias;
 
 	// Sample light, using mip bias to blur it.
@@ -253,7 +266,7 @@ void ComputeEnvLight(float alpha, float ao, vec3 light_dir, vec3 eyeDir, vec3 no
 	// Pseudo-IBL, so use k_IBL
 	float k = alpha * alpha/ 2.0f;
 
-	float NdotL = max(dot(light_dir, normal),0);
+	float NdotL = max(dot(light_dir, normal),0.0);
 
 	float g1vNL = GeometrySchlickGGX(NdotL, k);
 	vec3 specEnvLighting = specEnvColour.rgb * fresnel * g1vNL;
@@ -331,6 +344,6 @@ void main()
 		float NdotL = clamp(dot(normal, lightDir), 0.0, 1.0);
 		fragmentColor.rgb = computeLighting(specColor.rgb, diffColor, lightDir, normal.xyz, halfVec, eyeDir, roughness, fresnel, NdotL).rgb * diffuseLightColor * attenuation * area_normalisation;
 	}
-
+	
 	fragOut0 = max(fragmentColor, vec4(0.0));
 }
diff --git a/code/def_files/data/effects/deferred-v.sdr b/code/def_files/data/effects/deferred-v.sdr
index 2c9d4b02c66..d70e9cf0d66 100644
--- a/code/def_files/data/effects/deferred-v.sdr
+++ b/code/def_files/data/effects/deferred-v.sdr
@@ -1,3 +1,10 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+#endif
 
 #include "lighting.sdr"
 
diff --git a/code/def_files/data/effects/effect-distort-f.sdr b/code/def_files/data/effects/effect-distort-f.sdr
index b43907a39da..a6c729a318c 100644
--- a/code/def_files/data/effects/effect-distort-f.sdr
+++ b/code/def_files/data/effects/effect-distort-f.sdr
@@ -1,3 +1,10 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
+
 #ifdef VULKAN
 layout(location = 0) in vec4 fragTexCoord;
 layout(location = 1) in vec4 fragColor;
@@ -14,7 +21,7 @@ in vec4 fragTexCoord;
 in vec4 fragColor;
 in float fragOffset;
 
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2DArray baseMap;
 uniform sampler2D depthMap;
diff --git a/code/def_files/data/effects/effect-distort-v.sdr b/code/def_files/data/effects/effect-distort-v.sdr
index 5673b1baf3e..66a7c701cf6 100644
--- a/code/def_files/data/effects/effect-distort-v.sdr
+++ b/code/def_files/data/effects/effect-distort-v.sdr
@@ -1,3 +1,10 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
+
 #ifdef VULKAN
 layout(location = 0) in vec4 vertPosition;
 layout(location = 1) in vec4 vertColor;
diff --git a/code/def_files/data/effects/effect-f.sdr b/code/def_files/data/effects/effect-f.sdr
index f46147830e5..067855ebb18 100644
--- a/code/def_files/data/effects/effect-f.sdr
+++ b/code/def_files/data/effects/effect-f.sdr
@@ -1,3 +1,10 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+#endif
 
 #include "gamma.sdr"
 #include "z-compress.sdr"
@@ -18,7 +25,7 @@ in vec4 fragPosition;
 in vec4 fragTexCoord;
 in vec4 fragColor;
 
-out vec4 fragOut0;
+layout (location=0) out vec4 fragOut0;
 
 uniform sampler2DArray baseMap;
 uniform sampler2D depthMap;
diff --git a/code/def_files/data/effects/effect-g.sdr b/code/def_files/data/effects/effect-g.sdr
index d1cb2311291..b1a2f34c02f 100644
--- a/code/def_files/data/effects/effect-g.sdr
+++ b/code/def_files/data/effects/effect-g.sdr
@@ -1,3 +1,11 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+#endif
+
 layout (points) in;
 layout (triangle_strip, max_vertices = 4) out;
 
diff --git a/code/def_files/data/effects/effect-v.sdr b/code/def_files/data/effects/effect-v.sdr
index 86244a7ee84..b21159837ea 100644
--- a/code/def_files/data/effects/effect-v.sdr
+++ b/code/def_files/data/effects/effect-v.sdr
@@ -1,3 +1,10 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec4 vertPosition;
diff --git a/code/def_files/data/effects/envmap-sphere-warp-f.sdr b/code/def_files/data/effects/envmap-sphere-warp-f.sdr
index ab2b4071618..c24de4e1f3f 100644
--- a/code/def_files/data/effects/envmap-sphere-warp-f.sdr
+++ b/code/def_files/data/effects/envmap-sphere-warp-f.sdr
@@ -1,11 +1,15 @@
 #define M_PI 3.1415926535897932384626433832795
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp samplerCube;
+#endif
+
 uniform samplerCube envmap;
 
 in vec4 fragTexCoord;
 
-out vec4 fragOut0;
-
-layout (location = 0) out vec4 outColor;
+layout(location=0) out vec4 fragOut0;
 
 void main() {
 	const float theta = -fragTexCoord.x * (2.0 * M_PI);
diff --git a/code/def_files/data/effects/fog-f.sdr b/code/def_files/data/effects/fog-f.sdr
index 6c822bb67e3..0468dbb53f2 100644
--- a/code/def_files/data/effects/fog-f.sdr
+++ b/code/def_files/data/effects/fog-f.sdr
@@ -1,3 +1,8 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+#endif
 
 #include "gamma.sdr"
 
@@ -10,7 +15,7 @@ layout(set = 1, binding = 4) uniform sampler2D depth_tex;
 #else
 in vec4 fragTexCoord;
 
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2D tex;
 uniform sampler2D depth_tex;
@@ -40,7 +45,7 @@ void main()
 	// If the scene is in fog then we change the color we operate on based on the depth of the pixel
 	float depth_val = texture(depth_tex, fragTexCoord.xy).x;
 	// Transform depth value from [0, 1] to [-1, 1]
-	float depth_normalized = 2 * depth_val - 1;
+	float depth_normalized = 2.0 * depth_val - 1.0;
 	// Now we compute the depth value in projection space using the clipping plane information
 	float view_depth = 2.0 * zNear * zFar / (zFar + zNear - depth_normalized * (zFar - zNear));
 
@@ -50,7 +55,7 @@ void main()
 	if (isinf(view_depth)) {
 		fragOut0.rgb = color_in.rgb;
 	} else {
-		float fog_dist = clamp(1 - pow(fog_density, view_depth - fog_start) , 0.0, 1.0);
+		float fog_dist = clamp(1.0 - pow(fog_density, view_depth - fog_start) , 0.0, 1.0);
 		vec3 finalFogColor = srgb_to_linear(fog_color);
 
 		fragOut0.rgb = mix(color_in.rgb, finalFogColor, fog_dist);
diff --git a/code/def_files/data/effects/fxaa-f.sdr b/code/def_files/data/effects/fxaa-f.sdr
index 329b68384b7..49a70ccbdf0 100644
--- a/code/def_files/data/effects/fxaa-f.sdr
+++ b/code/def_files/data/effects/fxaa-f.sdr
@@ -1,3 +1,15 @@
+#ifdef GL_ES
+#ifdef GL_EXT_gpu_shader5
+	#extension GL_EXT_gpu_shader5 : enable
+	#define FXAA_GATHER4_ALPHA 1
+#endif
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+#endif
+
 #define FXAA_EARLY_EXIT 1
 #define FXAA_DISCARD 1
 #define FXAA_FAST_PIXEL_OFFSET 1 // With OpenGL 3.2 we can always do this
@@ -500,8 +512,12 @@ layout(std140, set = 2, binding = 0) uniform genericData {
 #else
 uniform sampler2D tex0;
 in vec2 v_rcpFrame;
+#ifdef GL_ES
+in vec2 v_pos;
+#else
 noperspective in vec2 v_pos;
-out vec4 fragOut0;
+#endif
+layout(location=0)out vec4 fragOut0;
 #endif
 
 void main() {
diff --git a/code/def_files/data/effects/fxaa-v.sdr b/code/def_files/data/effects/fxaa-v.sdr
index 22a9053f2a1..84124dadfee 100644
--- a/code/def_files/data/effects/fxaa-v.sdr
+++ b/code/def_files/data/effects/fxaa-v.sdr
@@ -1,3 +1,7 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) out vec2 fragTexCoord;
@@ -10,7 +14,11 @@ void main() {
 in vec4 vertPosition;
 
 out vec2 v_rcpFrame;
+#ifdef GL_ES
+out vec2 v_pos;
+#else
 noperspective out vec2 v_pos;
+#endif
 
 layout (std140) uniform genericData {
 	float rt_w;
diff --git a/code/def_files/data/effects/fxaapre-f.sdr b/code/def_files/data/effects/fxaapre-f.sdr
index 64dd3487342..c71d54bfc24 100644
--- a/code/def_files/data/effects/fxaapre-f.sdr
+++ b/code/def_files/data/effects/fxaapre-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+#endif
+
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
 layout(location = 0) out vec4 fragOut0;
@@ -8,7 +14,7 @@ layout(set = 1, binding = 1) uniform sampler2D fxaaTex[2];
 #define lumaTex fxaaTex[1]
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 uniform sampler2D tex;
 #endif
 void main() {
diff --git a/code/def_files/data/effects/gamma-correct-f.sdr b/code/def_files/data/effects/gamma-correct-f.sdr
index dc6ec534257..e93cf748259 100644
--- a/code/def_files/data/effects/gamma-correct-f.sdr
+++ b/code/def_files/data/effects/gamma-correct-f.sdr
@@ -1,3 +1,8 @@
+#ifdef GL_ES
+precision highp float;
+precision highp sampler2D;
+#endif
+
 #include "gamma.sdr"
 
 #ifdef VULKAN
@@ -6,7 +11,7 @@ layout(location = 0) out vec4 fragOut0;
 layout(set = 1, binding = 1) uniform sampler2D tex;
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+layout(location=0)out vec4 fragOut0;
 uniform sampler2D tex;
 #endif
 
diff --git a/code/def_files/data/effects/gamma.sdr b/code/def_files/data/effects/gamma.sdr
index a57ce437bdf..7067fef93bf 100644
--- a/code/def_files/data/effects/gamma.sdr
+++ b/code/def_files/data/effects/gamma.sdr
@@ -1,3 +1,6 @@
+#ifdef GL_ES
+precision highp float;
+#endif
 
 const float SRGB_GAMMA = 2.2;
 const float SRGB_GAMMA_INVERSE = 1.0 / SRGB_GAMMA;
diff --git a/code/def_files/data/effects/irrmap-f.sdr b/code/def_files/data/effects/irrmap-f.sdr
index 556480d22e5..6f8515ec8e8 100644
--- a/code/def_files/data/effects/irrmap-f.sdr
+++ b/code/def_files/data/effects/irrmap-f.sdr
@@ -1,5 +1,13 @@
 //!#version 150
-#include "gamma.sdr" //! #include "gamma.sdr"
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+#endif
+
+#include "gamma.sdr"
 #define PI 3.1415926535897932384626433832795
 
 #ifdef VULKAN
@@ -9,7 +17,7 @@ layout(set = 1, binding = 1) uniform samplerCube envmap;
 #else
 uniform samplerCube envmap;
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 #endif
 
 #ifdef VULKAN
@@ -154,8 +162,8 @@ vec3( 0.7305,  0.6698,  0.1333)
 );
 
 void main() {
-	float xpos = 2 * gl_FragCoord.x/16 - 1; // remap to (-1, 1)
-	float ypos = 2 * gl_FragCoord.y/16 - 1;
+	float xpos = 2.0 * gl_FragCoord.x/16.0 - 1.0; // remap to (-1, 1)
+	float ypos = 2.0 * gl_FragCoord.y/16.0 - 1.0;
 	vec3 fragDir;
 	vec4 fragCol = vec4(0.0);
 
@@ -191,5 +199,5 @@ void main() {
 		vec3 sampDir = points[i] + (aPdotD - PdotD) * fragDir;
 		fragCol += aPdotD * vec4(srgb_to_linear(texture(envmap, sampDir)).rgb, 1.0);
 	}
-	fragOut0 = linear_to_srgb(PI * fragCol * (1.0/128));
+	fragOut0 = linear_to_srgb(PI * fragCol * (1.0/128.0));
 }
\ No newline at end of file
diff --git a/code/def_files/data/effects/lighting.sdr b/code/def_files/data/effects/lighting.sdr
index 799617b52eb..00ae3fb2fa0 100644
--- a/code/def_files/data/effects/lighting.sdr
+++ b/code/def_files/data/effects/lighting.sdr
@@ -8,7 +8,7 @@ const int LT_AMBIENT		= 4;		// Directionless ambient light
 const float SPEC_FACTOR_NO_SPEC_MAP		= 0.1;
 const float GLOW_MAP_INTENSITY			= 1.5;
 const float GLOW_MAP_SRGB_MULTIPLIER	= 3.0;
-const float PI = 3.14159f;
+const float PI = 3.14159265359;
 
 
 vec3 FresnelSchlick(vec3 halfVec, vec3 view, vec3 specColor)
@@ -57,7 +57,7 @@ vec3 ComputeGGX(vec3 specColor, vec3 diffColor, vec3 light, vec3 normal, vec3 ha
 
 
 
-	vec3 specular = distribution * fresnel * geometry / (4*dotNV*dotNL + 0.0001);
+	vec3 specular = distribution * fresnel * geometry / (4.0*dotNV*dotNL + 0.0001);
 	
 	// Diffuse term - Lambertian, kD represents energy lost to specular reflection.
 	vec3 kD = vec3(1.0)-fresnel;
@@ -70,7 +70,7 @@ vec3 ComputeGGX(vec3 specColor, vec3 diffColor, vec3 light, vec3 normal, vec3 ha
 vec3 computeLighting(vec3 specColor, vec3 diffColor, vec3 light, vec3 normal, vec3 halfVec, vec3 view, float roughness, float fresnelFactor, float dotNL) 
 {
 	#ifdef FLAG_LIGHT_MODEL_BLINN_PHONG
-	return SpecularBlinnPhong(specColor, light, normal, halfVec, 32, fresnelFactor, dotNL);
+	return SpecularBlinnPhong(specColor, light, normal, halfVec, 32.0, fresnelFactor, dotNL);
 	#else
 	return ComputeGGX(specColor, diffColor, light, normal, halfVec, view, roughness, fresnelFactor, dotNL);
 	#endif
diff --git a/code/def_files/data/effects/ls-f.sdr b/code/def_files/data/effects/ls-f.sdr
index cc4ff755da0..b2c25753e21 100644
--- a/code/def_files/data/effects/ls-f.sdr
+++ b/code/def_files/data/effects/ls-f.sdr
@@ -1,3 +1,8 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
@@ -9,7 +14,7 @@ layout(set = 1, binding = 1) uniform sampler2D textures[16];
 #else
 in vec4 fragTexCoord;
 
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2D scene;
 uniform sampler2D cockpit;
diff --git a/code/def_files/data/effects/main-f.sdr b/code/def_files/data/effects/main-f.sdr
index 1a46b848d9e..cbb954d3c2d 100644
--- a/code/def_files/data/effects/main-f.sdr
+++ b/code/def_files/data/effects/main-f.sdr
@@ -1,4 +1,18 @@
 //? #version 150
+#ifdef GL_ES
+#extension GL_EXT_clip_cull_distance: enable
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+precision highp sampler2DArrayShadow;
+#endif
+
+#if !defined(GL_ES) || defined(GL_EXT_clip_cull_distance)
+#define USE_HW_CLIP_DISTANCE
+#endif
+
 #include "shadows.sdr" //! #include "shadows.sdr"
 #include "lighting.sdr" //! #include "lighting.sdr"
 #include "gamma.sdr" //! #include "gamma.sdr"
@@ -135,6 +149,10 @@ layout(location = 0) in VertexOutput {
 	vec4 shadowUV[NUM_SHADOW_CASCADES];
 	vec4 shadowPos;
 #prereplace ENDIF_FLAG_COMPILED MODEL_SDR_FLAG_SHADOWS
+
+#ifndef USE_HW_CLIP_DISTANCE
+    float vClipDist;
+#endif
 } vertIn;
 
 layout(location = 0) out vec4 fragOut0;
@@ -183,11 +201,11 @@ in VertexOutput {
 #prereplace ENDIF_FLAG_COMPILED MODEL_SDR_FLAG_SHADOWS
 } vertIn;
 
-out vec4 fragOut0;
-out vec4 fragOut1;
-out vec4 fragOut2;
-out vec4 fragOut3;
-out vec4 fragOut4;
+layout(location=0)out vec4 fragOut0;
+layout(location=1)out vec4 fragOut1;
+layout(location=2)out vec4 fragOut2;
+layout(location=3)out vec4 fragOut3;
+layout(location=4)out vec4 fragOut4;
 #endif
 
 vec3 FresnelLazarovEnv(vec3 specColor, vec3 view, vec3 normal, float gloss)
@@ -272,6 +290,10 @@ vec3 CalculateLighting(vec3 normal, vec3 diffuseMaterial, vec3 specularMaterial,
 
 void main()
 {
+	#ifndef USE_HW_CLIP_DISTANCE
+		if (vertIn.vClipDist < 0.0) discard;
+	#endif
+
 	vec3 eyeDir = vec3(normalize(-vertIn.position).xyz);
 	vec2 texCoord = vertIn.texCoord.xy;
 
@@ -448,7 +470,7 @@ void main()
 		#prereplace ENDIF_FLAG //MODEL_SDR_FLAG_DIFFUSE
 		// This code will only be used by the forward renderer so we apply the fog effect to both the emissive and the base
 		// color.
-		float fogDensityFinal = clamp(1 - pow(fogDensity, vertIn.fogDist) , 0.0, 1.0);
+		float fogDensityFinal = clamp(1.0 - pow(fogDensity, vertIn.fogDist) , 0.0, 1.0);
 		baseColor.rgb = mix(emissiveColor.rgb + baseColor.rgb, finalFogColor, fogDensityFinal);
 		emissiveColor.rgb = vec3(0.0); // Zero the emissive color since it has already been added by the previous line
 		specColor.rgb *= fogDensityFinal;
@@ -493,11 +515,11 @@ void main()
 		#prereplace IF_NOT_FLAG MODEL_SDR_FLAG_LIGHT
 			#prereplace IF_FLAG MODEL_SDR_FLAG_SPEC
 				baseColor.rgb += pow(1.0 - clamp(dot(eyeDir, normal), 0.0, 1.0), 5.0 * clamp(glossData, 0.01, 1.0)) * specColor.rgb;
-				glossData = 0;
+				glossData = 0.0f;
 			#prereplace ENDIF_FLAG //MODEL_SDR_FLAG_SPEC
 			// If there is no lighting then we copy the color data so far into the emissive.
 			emissiveColor.rgb += baseColor.rgb;
-			aoFactors.x = 0;
+			aoFactors.x = 0.0f;
 		#prereplace ENDIF_FLAG //MODEL_SDR_FLAG_LIGHT
 	#prereplace ENDIF_FLAG //MODEL_SDR_FLAG_DEFERRED
 
diff --git a/code/def_files/data/effects/main-g.sdr b/code/def_files/data/effects/main-g.sdr
index e348c386dfa..af21d4dcbf7 100644
--- a/code/def_files/data/effects/main-g.sdr
+++ b/code/def_files/data/effects/main-g.sdr
@@ -1,4 +1,18 @@
+#ifdef GL_ES
+#extension GL_EXT_gpu_shader5: enable
+#extension GL_EXT_clip_cull_distance: enable
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+#else
 #extension GL_ARB_gpu_shader5: enable
+#endif
+
+#if !defined(GL_ES) || defined(GL_EXT_clip_cull_distance)
+#define USE_HW_CLIP_DISTANCE
+#endif
 
 #conditional_include +"LARGE_SHADER" "main_large.sdr"
 #conditional_include -"LARGE_SHADER" "main_small.sdr"
@@ -100,6 +114,9 @@ in VertexOutput {
 	vec4 shadowUV[NUM_SHADOW_CASCADES];
 	vec4 shadowPos;
 #prereplace ENDIF_FLAG_COMPILED MODEL_SDR_FLAG_SHADOWS
+#ifndef USE_HW_CLIP_DISTANCE
+    float vClipDist;
+#endif
 } vertIn[];
 
 out VertexOutput {
@@ -117,6 +134,10 @@ out VertexOutput {
 	vec4 shadowUV[NUM_SHADOW_CASCADES];
 	vec4 shadowPos;
 #prereplace ENDIF_FLAG_COMPILED MODEL_SDR_FLAG_SHADOWS
+
+#ifndef USE_HW_CLIP_DISTANCE
+    float vClipDist;
+#endif
 } vertOut;
 
 #ifdef MODEL_SDR_FLAG_THICK_OUTLINES
@@ -166,8 +187,19 @@ out VertexOutput {
                 #prereplace ENDIF_FLAG //MODEL_SDR_FLAG_SHADOWS
 
 				if (use_clip_plane != 0) {
-					gl_ClipDistance[0] = gl_in[vert].gl_ClipDistance[0];
+					#ifndef USE_HW_CLIP_DISTANCE
+						vertOut.vClipDist = vertIn[vert].vClipDist;
+					#else
+						gl_ClipDistance[0] = gl_in[vert].gl_ClipDistance[0];
+					#endif
+				} else {
+					#ifndef USE_HW_CLIP_DISTANCE
+						vertOut.vClipDist = 1.0;
+					#else
+						gl_ClipDistance[0] = 1.0;
+					#endif
 				}
+
 				EmitVertex();
 			}
 
diff --git a/code/def_files/data/effects/main-v.sdr b/code/def_files/data/effects/main-v.sdr
index 39426766ab1..2ffece3cf98 100644
--- a/code/def_files/data/effects/main-v.sdr
+++ b/code/def_files/data/effects/main-v.sdr
@@ -1,8 +1,25 @@
 
 #ifndef VULKAN
 //? #version 150
+#ifdef GL_ES
+#extension GL_EXT_gpu_shader5: enable
+#extension GL_EXT_clip_cull_distance: enable
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp samplerCube;
+precision highp samplerBuffer;
+precision highp sampler2DArrayShadow;
+#else
 #extension GL_ARB_gpu_shader5: enable
 #endif
+#endif
+
+#if !defined(GL_ES) || defined(GL_EXT_clip_cull_distance)
+#define USE_HW_CLIP_DISTANCE
+#endif
+
 #include "shadows.sdr"
 
 #conditional_include +"LARGE_SHADER" "main_large.sdr"
@@ -158,6 +175,10 @@ out VertexOutput {
 	vec4 shadowUV[NUM_SHADOW_CASCADES];
 	vec4 shadowPos;
 #prereplace ENDIF_FLAG_COMPILED MODEL_SDR_FLAG_SHADOWS
+
+#ifndef USE_HW_CLIP_DISTANCE
+    float vClipDist;
+#endif
 } vertOut;
 
 #define TEXELS_PER_MATRIX 4
@@ -239,12 +260,20 @@ void main()
 		}
 	#prereplace ENDIF_FLAG //MODEL_SDR_FLAG_TRANSFORM
 
-	// Clip plane
-	if(use_clip_plane != 0) {
-		gl_ClipDistance[0] = dot(clip_equation, modelMatrix * orient * vertex);
-	} else {
-		gl_ClipDistance[0] = 1.0;
-	}
+	#ifdef USE_HW_CLIP_DISTANCE
+		if (use_clip_plane != 0) {
+			gl_ClipDistance[0] = dot(clip_equation, modelMatrix * orient * vertex);
+		} else {
+			gl_ClipDistance[0] = 1.0;
+		}
+	#else
+		if (use_clip_plane != 0) {
+			vertOut.vClipDist = dot(clip_equation, modelMatrix * orient * vertex);
+		} else {
+			vertOut.vClipDist = 1.0;
+		}
+	#endif
+
 
 	vertOut.position = position;
 	vertOut.normal = normal;
diff --git a/code/def_files/data/effects/msaa-f.sdr b/code/def_files/data/effects/msaa-f.sdr
index 85ce8d36aff..63ecfa34ebe 100644
--- a/code/def_files/data/effects/msaa-f.sdr
+++ b/code/def_files/data/effects/msaa-f.sdr
@@ -1,4 +1,11 @@
 #include "z-compress.sdr"
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+precision highp sampler2DMS;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
@@ -23,12 +30,12 @@ layout(std140, set = 2, binding = 0) uniform genericData {
 };
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
-out vec4 fragOut1;
-out vec4 fragOut2;
-out vec4 fragOut3;
-out vec4 fragOut4;
-out vec4 fragOut5;
+layout(location=0)out vec4 fragOut0;
+layout(location=1)out vec4 fragOut1;
+layout(location=2)out vec4 fragOut2;
+layout(location=3)out vec4 fragOut3;
+layout(location=4)out vec4 fragOut4;
+layout(location=5)out vec4 fragOut5;
 
 uniform sampler2DMS texColor;
 uniform sampler2DMS texPos;
diff --git a/code/def_files/data/effects/nanovg-f.sdr b/code/def_files/data/effects/nanovg-f.sdr
index dbe41703069..71a32566cc2 100644
--- a/code/def_files/data/effects/nanovg-f.sdr
+++ b/code/def_files/data/effects/nanovg-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout (location = 0) in vec2 ftcoord;
diff --git a/code/def_files/data/effects/nanovg-v.sdr b/code/def_files/data/effects/nanovg-v.sdr
index 2974de708e1..3914d8aff8f 100644
--- a/code/def_files/data/effects/nanovg-v.sdr
+++ b/code/def_files/data/effects/nanovg-v.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout (location = 0) in vec4 vertPosition;
diff --git a/code/def_files/data/effects/normals.sdr b/code/def_files/data/effects/normals.sdr
index 8123bd13747..185dc5cbff2 100644
--- a/code/def_files/data/effects/normals.sdr
+++ b/code/def_files/data/effects/normals.sdr
@@ -7,6 +7,6 @@
 vec3 unpackNormal(vec2 normal_sample) {
 	vec3 normal;
 	normal.xy = normal_sample * 2.0 - 1.0;
-	normal.z = sqrt(1 - normal_sample.x * normal_sample.x - normal_sample.y * normal_sample.y);
+	normal.z = sqrt(1.0 - normal_sample.x * normal_sample.x - normal_sample.y * normal_sample.y);
 	return normal;
 }
diff --git a/code/def_files/data/effects/passthrough-f.sdr b/code/def_files/data/effects/passthrough-f.sdr
index 6e3134e068e..3b06379b9bd 100644
--- a/code/def_files/data/effects/passthrough-f.sdr
+++ b/code/def_files/data/effects/passthrough-f.sdr
@@ -1,9 +1,14 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+#endif
 
 #include "gamma.sdr"
 
 in vec4 fragTexCoord;
 in vec4 fragColor;
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2D baseMap;
 
diff --git a/code/def_files/data/effects/post-f.sdr b/code/def_files/data/effects/post-f.sdr
index 6e12a5e20fb..990d8755b2a 100644
--- a/code/def_files/data/effects/post-f.sdr
+++ b/code/def_files/data/effects/post-f.sdr
@@ -1,3 +1,10 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
+
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
 layout(location = 0) out vec4 fragOut0;
@@ -5,7 +12,7 @@ layout(set = 1, binding = 1) uniform sampler2D tex;
 layout(set = 1, binding = 4) uniform sampler2D depth_tex;
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 uniform sampler2D tex;
 uniform sampler2D depth_tex;
 #endif
diff --git a/code/def_files/data/effects/rocketui-f.sdr b/code/def_files/data/effects/rocketui-f.sdr
index 688d2ec5fe2..1a500ce3edf 100644
--- a/code/def_files/data/effects/rocketui-f.sdr
+++ b/code/def_files/data/effects/rocketui-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
@@ -12,7 +18,7 @@ in vec2 fragTexCoord;
 in vec4 fragColor;
 in vec2 fragScreenPosition;
 
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2DArray baseMap;
 #endif
diff --git a/code/def_files/data/effects/rocketui-v.sdr b/code/def_files/data/effects/rocketui-v.sdr
index 07ae245966f..d4c0e2c4cdf 100644
--- a/code/def_files/data/effects/rocketui-v.sdr
+++ b/code/def_files/data/effects/rocketui-v.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec2 vertPosition;
diff --git a/code/def_files/data/effects/shadow_map-f.sdr b/code/def_files/data/effects/shadow_map-f.sdr
index fff405831fd..b6798e0fc15 100644
--- a/code/def_files/data/effects/shadow_map-f.sdr
+++ b/code/def_files/data/effects/shadow_map-f.sdr
@@ -1,5 +1,22 @@
 //? #version 150
+#ifdef GL_ES
+#extension GL_EXT_clip_cull_distance: enable
+precision highp float;
+#endif
+
+#if !defined(GL_ES) || defined(GL_EXT_clip_cull_distance)
+#define USE_HW_CLIP_DISTANCE
+#endif
+
+#ifndef USE_HW_CLIP_DISTANCE
+in VertexOutput {
+	float vClipDist;
+} vertIn;
+#endif
 
 void main()
 {
+#ifndef USE_HW_CLIP_DISTANCE
+	if (vertIn.vClipDist < 0.0) discard;
+#endif
 }
diff --git a/code/def_files/data/effects/shadow_map-g.sdr b/code/def_files/data/effects/shadow_map-g.sdr
index 0de37ea486c..e2709f41c5c 100644
--- a/code/def_files/data/effects/shadow_map-g.sdr
+++ b/code/def_files/data/effects/shadow_map-g.sdr
@@ -1,9 +1,20 @@
 //? #version 150
+#ifdef GL_ES
+#extension GL_EXT_gpu_shader5: enable
+#extension GL_EXT_clip_cull_distance: enable
+precision highp float;
+precision highp int;
+#else
 #extension GL_ARB_gpu_shader5: enable
+#endif
+
+#if !defined(GL_ES) || defined(GL_EXT_clip_cull_distance)
+#define USE_HW_CLIP_DISTANCE
+#endif
 
 layout (triangles) in;
 layout (triangle_strip, max_vertices = 3) out;
-#ifdef GL_ARB_gpu_shader5
+#if defined(GL_ARB_gpu_shader5) || defined(GL_EXT_gpu_shader5)
 layout(invocations = NUM_SHADOW_CASCADES) in;
 #endif
 
@@ -18,16 +29,25 @@ layout (std140) uniform shadowCascadeParams {
 };
 
 in VertexOutput {
-#if !defined(GL_ARB_gpu_shader5)
+#if !defined(GL_ARB_gpu_shader5) && !defined(GL_EXT_gpu_shader5)
     float instance;
 #endif
 	float clipModel;
 	vec3 normal;
+#ifndef USE_HW_CLIP_DISTANCE
+	float vClipDist;
+#endif
 } vertIn[];
 
+#ifndef USE_HW_CLIP_DISTANCE
+out VertexOutput {
+	float vClipDist;
+} vertOut;
+#endif
+
 void main(void)
 {
-#ifdef GL_ARB_gpu_shader5
+#if defined(GL_ARB_gpu_shader5) || defined(GL_EXT_gpu_shader5)
     if (gl_InvocationID >= cascade_count) return;
     int cascade_id = cascade_offset + gl_InvocationID;
 #else
@@ -43,7 +63,12 @@ void main(void)
 		}
 
 		gl_Layer = cascade_id;
-		gl_ClipDistance[0] = gl_in[vert].gl_ClipDistance[0];
+		
+		#ifndef USE_HW_CLIP_DISTANCE
+			vertOut.vClipDist = vertIn[vert].vClipDist;
+		#else
+			gl_ClipDistance[0] = gl_in[vert].gl_ClipDistance[0];
+		#endif
 
 		EmitVertex();
 	}
diff --git a/code/def_files/data/effects/shadow_map-v.sdr b/code/def_files/data/effects/shadow_map-v.sdr
index f3e92cd21d1..5f76c23b3f0 100644
--- a/code/def_files/data/effects/shadow_map-v.sdr
+++ b/code/def_files/data/effects/shadow_map-v.sdr
@@ -1,9 +1,20 @@
 //? #version 150
+#ifdef GL_ES
+#extension GL_EXT_gpu_shader5: enable
+#extension GL_EXT_clip_cull_distance: enable
+precision highp float;
+precision highp int;
+precision highp samplerBuffer;
+#else
 #extension GL_ARB_gpu_shader5: enable
-
 #ifndef GEOMETRY_FALLBACK
 #extension GL_ARB_shader_viewport_layer_array : enable
 #endif
+#endif
+
+#if !defined(GL_ES) || defined(GL_EXT_clip_cull_distance)
+#define USE_HW_CLIP_DISTANCE
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec4 vertPosition;
@@ -62,11 +73,18 @@ uniform samplerBuffer transform_tex;
 // supports writing gl_Layer from the vertex shader, see CAPABILITY_FAST_SHADOWS).
 #ifdef GEOMETRY_FALLBACK
 out VertexOutput {
-#if !defined(GL_ARB_gpu_shader5)
+#if !defined(GL_ARB_gpu_shader5) && !defined(GL_EXT_gpu_shader5)
 	float instance;
 #endif
 	float clipModel;
 	vec3 normal;
+#ifndef USE_HW_CLIP_DISTANCE
+    float vClipDist;
+#endif
+} vertOut;
+#elif !defined(USE_HW_CLIP_DISTANCE)
+out VertexOutput {
+	float vClipDist;
 } vertOut;
 #endif
 
@@ -108,7 +126,7 @@ void main()
 #ifdef VULKAN
 	int instanceIndex = gl_InstanceIndex;
 #else
-	#if !defined(GL_ARB_gpu_shader5)
+	#if !defined(GL_ARB_gpu_shader5) && !defined(GL_EXT_gpu_shader5)
 		#ifdef APPLE
 			vertOut.instance = float(gl_InstanceIDARB);
 		#else
@@ -129,11 +147,19 @@ void main()
         gl_Position = position;
     }
 
+#ifdef USE_HW_CLIP_DISTANCE
 	if (use_clip_plane != 0) {
 		gl_ClipDistance[0] = dot(clip_equation, modelMatrix * orient * vertex);
 	} else {
 		gl_ClipDistance[0] = 1.0;
 	}
+#else
+	if (use_clip_plane != 0) {
+		vertOut.vClipDist = dot(clip_equation, modelMatrix * orient * vertex);
+	} else {
+		vertOut.vClipDist = 1.0;
+	}
+#endif
 
 #ifdef GEOMETRY_FALLBACK
     vertOut.normal = normal;
diff --git a/code/def_files/data/effects/shield-impact-f.sdr b/code/def_files/data/effects/shield-impact-f.sdr
index e847867a9b0..1b046181682 100644
--- a/code/def_files/data/effects/shield-impact-f.sdr
+++ b/code/def_files/data/effects/shield-impact-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #include "gamma.sdr"
 
@@ -14,7 +20,7 @@ layout(set = 1, binding = 1) uniform sampler2DArray shieldMap;
 in vec4 fragImpactUV;
 in float fragNormOffset;
 
-out vec4 fragOut0;
+layout (location=0) out vec4 fragOut0;
 
 uniform sampler2DArray shieldMap;
 #endif
diff --git a/code/def_files/data/effects/shield-impact-v.sdr b/code/def_files/data/effects/shield-impact-v.sdr
index 22f423cb3fb..7524edffff5 100644
--- a/code/def_files/data/effects/shield-impact-v.sdr
+++ b/code/def_files/data/effects/shield-impact-v.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec4 vertPosition;
diff --git a/code/def_files/data/effects/smaa-blend-f.sdr b/code/def_files/data/effects/smaa-blend-f.sdr
index 055d4b617b5..990fc788212 100644
--- a/code/def_files/data/effects/smaa-blend-f.sdr
+++ b/code/def_files/data/effects/smaa-blend-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(std140, set = 2, binding = 0) uniform genericData {
@@ -33,7 +39,7 @@ in vec2 fragTexCoord;
 in vec2 fragPixcoord;
 in vec4 fragOffset[3];
 
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2D edgesTex;
 uniform sampler2D areaTex;
diff --git a/code/def_files/data/effects/smaa-blend-v.sdr b/code/def_files/data/effects/smaa-blend-v.sdr
index a4e51c82a23..0fe3baca4f8 100644
--- a/code/def_files/data/effects/smaa-blend-v.sdr
+++ b/code/def_files/data/effects/smaa-blend-v.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(std140, set = 2, binding = 0) uniform genericData {
diff --git a/code/def_files/data/effects/smaa-edge-f.sdr b/code/def_files/data/effects/smaa-edge-f.sdr
index 3628177a08e..67c21389f6c 100644
--- a/code/def_files/data/effects/smaa-edge-f.sdr
+++ b/code/def_files/data/effects/smaa-edge-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(std140, set = 2, binding = 0) uniform genericData {
@@ -27,7 +33,7 @@ layout(set = 1, binding = 1) uniform sampler2D colorTex;
 in vec2 fragTexCoord;
 in vec4 fragOffset[3];
 
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2D colorTex;
 #endif
diff --git a/code/def_files/data/effects/smaa-edge-v.sdr b/code/def_files/data/effects/smaa-edge-v.sdr
index 6aa82772665..7f2cb9b13a0 100644
--- a/code/def_files/data/effects/smaa-edge-v.sdr
+++ b/code/def_files/data/effects/smaa-edge-v.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(std140, set = 2, binding = 0) uniform genericData {
diff --git a/code/def_files/data/effects/smaa-neighbour-f.sdr b/code/def_files/data/effects/smaa-neighbour-f.sdr
index 56813d9ca59..5af92026f7e 100644
--- a/code/def_files/data/effects/smaa-neighbour-f.sdr
+++ b/code/def_files/data/effects/smaa-neighbour-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(std140, set = 2, binding = 0) uniform genericData {
@@ -30,7 +36,7 @@ layout(set = 1, binding = 1) uniform sampler2D smaaTex[2];
 in vec2 fragTexCoord;
 in vec4 fragOffset;
 
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 
 uniform sampler2D colorTex;
 uniform sampler2D blendTex;
diff --git a/code/def_files/data/effects/smaa-neighbour-v.sdr b/code/def_files/data/effects/smaa-neighbour-v.sdr
index 98ca74070c0..4f590637505 100644
--- a/code/def_files/data/effects/smaa-neighbour-v.sdr
+++ b/code/def_files/data/effects/smaa-neighbour-v.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(std140, set = 2, binding = 0) uniform genericData {
diff --git a/code/def_files/data/effects/tonemapping-f.sdr b/code/def_files/data/effects/tonemapping-f.sdr
index 98d7a04838b..7e7a7398f8e 100644
--- a/code/def_files/data/effects/tonemapping-f.sdr
+++ b/code/def_files/data/effects/tonemapping-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #include "gamma.sdr"
 
@@ -7,7 +13,7 @@ layout(location = 0) out vec4 fragOut0;
 layout(set = 1, binding = 1) uniform sampler2D tex;
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 uniform sampler2D tex;
 #endif
 
diff --git a/code/def_files/data/effects/video-f.sdr b/code/def_files/data/effects/video-f.sdr
index 8ea4044baa3..e5ad1ebe3c6 100644
--- a/code/def_files/data/effects/video-f.sdr
+++ b/code/def_files/data/effects/video-f.sdr
@@ -1,3 +1,10 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
+
 #ifdef VULKAN
 layout(location = 0) in vec4 fragTexCoord;
 layout(location = 0) out vec4 fragOut0;
@@ -8,7 +15,7 @@ layout(set = 1, binding = 1) uniform sampler2DArray textures[16];
 #define vtex textures[2]
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+layout(location=0) out vec4 fragOut0;
 uniform sampler2DArray ytex;
 uniform sampler2DArray utex;
 uniform sampler2DArray vtex;
diff --git a/code/def_files/data/effects/volumetric-f.sdr b/code/def_files/data/effects/volumetric-f.sdr
index b00e721317c..25e9de2ad18 100644
--- a/code/def_files/data/effects/volumetric-f.sdr
+++ b/code/def_files/data/effects/volumetric-f.sdr
@@ -1,3 +1,9 @@
+#ifdef GL_ES
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+#endif
 
 #ifdef VULKAN
 layout(location = 0) in vec2 fragTexCoord;
@@ -10,7 +16,9 @@ layout(set = 1, binding = 5) uniform sampler3D volume_tex;
 layout(set = 1, binding = 6) uniform sampler3D noise_volume_tex;
 #else
 in vec4 fragTexCoord;
-out vec4 fragOut0;
+
+layout(location=0) out vec4 fragOut0;
+
 layout (binding = 0) uniform sampler2D composite;
 layout (binding = 1) uniform sampler2D emissive;
 layout (binding = 2) uniform sampler2D depth_tex;
diff --git a/code/graphics/opengl/es_compatibility.h b/code/graphics/opengl/es_compatibility.h
index a864be1545e..3cdae8eeb82 100644
--- a/code/graphics/opengl/es_compatibility.h
+++ b/code/graphics/opengl/es_compatibility.h
@@ -32,6 +32,7 @@
 #define GL_CLAMP_VERTEX_COLOR					0x891A
 #define GL_CLAMP_FRAGMENT_COLOR					0x891B
 #define GL_FIXED_ONLY							0x891D
+#define GLAD_GL_ARB_shader_viewport_layer_array 0 // Disabled, no gl_layer in vertex shader //0x8DAE
 
 //Enums Redefinitions
 #define GL_CLIP_DISTANCE0						GL_CLIP_DISTANCE0_EXT // GL_EXT_clip_cull_distance
@@ -48,6 +49,7 @@
 #define GLAD_GL_ARB_texture_storage				GL_TRUE // ES 3.2
 #define GLAD_GL_ARB_draw_buffers_blend			GL_TRUE // ES 3.2 (glBlendFunci and glBlendEquationi)
 #define GLAD_GL_ARB_vertex_attrib_binding		GL_TRUE // ES 3.1
+#define GL_DEPTH_CLAMP							GL_DEPTH_CLAMP_EXT
 
 //Functions Redefinitions
 #define glBlendFunciARB					glBlendFunci // ES 3.2
@@ -234,11 +236,6 @@ inline void glDrawBuffer(GLenum buf)
 	}
 }
 
-// does not exist on ES, ES uses layout(location=) directly on shader
-// Notes: 
-// -This function is not required to run.
-#define glBindFragDataLocation(program, colorNumber, name) ((void)0)
-
 // glPolygonMode() is not supported on ES,  no wireframe, GL_FILL is default, GL_POINTS, and GL_LINES needs an alternative path
 // Notes: 
 // -This function is not required to run.
@@ -254,6 +251,7 @@ static inline void glQueryCounter(GLuint id, GLenum target)
 	#else
 		(void)id;
 	#endif
+		(void)target;
 }
 
 // glGetCompressedTexImage not present on GLES and no equivalent
diff --git a/code/graphics/opengl/gropengl.cpp b/code/graphics/opengl/gropengl.cpp
index 0ead59d377a..a49a7e17a61 100644
--- a/code/graphics/opengl/gropengl.cpp
+++ b/code/graphics/opengl/gropengl.cpp
@@ -1453,7 +1453,9 @@ bool gr_opengl_init(std::unique_ptr<os::GraphicsOperations>&& graphicsOps)
 			"Deferred lightning is enabled in settings but the gpu does not support the minimum of 6 draw buffers. "
 			"This will result in rendering errors.");
 	}
-
+	
+	mprintf(("  Depth Clamp support : %s\n", GLAD_GL_EXT_depth_clamp ? NOX("YES") : NOX("NO")));
+	mprintf(("  HW Cull distance support : %s\n", GLAD_GL_EXT_clip_cull_distance ? NOX("YES") : NOX("NO")));
 	mprintf(("  Precompiled shaders support : %s\n", GLAD_GL_OES_get_program_binary ? NOX("YES") : NOX("NO")));
 	mprintf(("  Immutable buffer storage support : %s\n", GLAD_GL_EXT_buffer_storage ? NOX("YES") : NOX("NO")));
 	mprintf(("  BGRA8888 format support: %s\n", GLAD_GL_EXT_texture_format_BGRA8888 ? NOX("YES") : NOX("NO")));
diff --git a/code/graphics/opengl/gropenglshader.cpp b/code/graphics/opengl/gropenglshader.cpp
index 41c3142d153..f2e5e5a768f 100644
--- a/code/graphics/opengl/gropenglshader.cpp
+++ b/code/graphics/opengl/gropenglshader.cpp
@@ -488,13 +488,6 @@ void opengl_compile_shader_actual(shader_type sdr, const uint &flags, opengl_sha
 				glBindAttribLocation(program->getShaderHandle(), (GLint)i, GL_vertex_attrib_info[i].name.c_str());
 			}
 
-			// bind fragment data locations before we link the shader
-			glBindFragDataLocation(program->getShaderHandle(), 0, "fragOut0");
-			glBindFragDataLocation(program->getShaderHandle(), 1, "fragOut1");
-			glBindFragDataLocation(program->getShaderHandle(), 2, "fragOut2");
-			glBindFragDataLocation(program->getShaderHandle(), 3, "fragOut3");
-			glBindFragDataLocation(program->getShaderHandle(), 4, "fragOut4");
-
 			if (do_shader_caching()) {
 				// Enable shader caching
 				glProgramParameteri(program->getShaderHandle(), GL_PROGRAM_BINARY_RETRIEVABLE_HINT, GL_TRUE);
diff --git a/code/graphics/shaders/compiled/default-material.frag.spv.gles.glsl b/code/graphics/shaders/compiled/default-material.frag.spv.gles.glsl
new file mode 100644
index 00000000000..eaa4710f2c7
--- /dev/null
+++ b/code/graphics/shaders/compiled/default-material.frag.spv.gles.glsl
@@ -0,0 +1,66 @@
+#version 320 es
+#extension GL_EXT_clip_cull_distance : enable
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+
+#if defined(GL_EXT_clip_cull_distance)
+#define USE_HW_CLIP_DISTANCE
+#endif
+
+layout(std140) uniform genericData
+{
+    mat4 modelMatrix;
+    vec4 color;
+    vec4 clipEquation;
+    int baseMapIndex;
+    int alphaTexture;
+    int noTexturing;
+    int srgb;
+    float intensity;
+    float alphaThreshold;
+    uint clipEnabled;
+} _39;
+
+uniform sampler2DArray baseMap;
+#ifndef USE_HW_CLIP_DISTANCE
+in highp float vClipDist;
+#endif
+in vec4 fragTexCoord;
+in vec4 fragColor;
+layout (location=0) out vec4 fragOut0;
+
+void main()
+{
+#ifndef USE_HW_CLIP_DISTANCE
+	if (_39.clipEnabled != 0u && vClipDist < 0.0) {
+		discard;
+	}
+#endif
+    vec4 _48 = texture(baseMap, vec3(fragTexCoord.xy, float(_39.baseMapIndex)));
+    if (_39.alphaThreshold > _48.w)
+    {
+        discard;
+    }
+    bool _66 = _39.srgb == 1;
+    vec3 _146;
+    if (_66)
+    {
+        _146 = pow(_48.xyz, vec3(2.2000000476837158203125));
+    }
+    else
+    {
+        _146 = _48.xyz;
+    }
+    vec4 _148;
+    if (_66)
+    {
+        _148 = vec4(pow(fragColor.xyz, vec3(2.2000000476837158203125)), fragColor.w);
+    }
+    else
+    {
+        _148 = fragColor;
+    }
+    fragOut0 = mix(mix(vec4(_146.x, _146.y, _146.z, _48.w) * _148, vec4(_148.xyz, _146.x * _148.w), vec4(float(_39.alphaTexture))), _148, vec4(float(_39.noTexturing))) * _39.intensity;
+}
diff --git a/code/graphics/shaders/compiled/default-material.vert.spv.gles.glsl b/code/graphics/shaders/compiled/default-material.vert.spv.gles.glsl
new file mode 100644
index 00000000000..aa17641dc11
--- /dev/null
+++ b/code/graphics/shaders/compiled/default-material.vert.spv.gles.glsl
@@ -0,0 +1,52 @@
+#version 320 es
+#extension GL_EXT_clip_cull_distance : enable
+precision highp float;
+precision highp int;
+precision highp sampler2D;
+precision highp sampler2DArray;
+
+#if defined(GL_EXT_clip_cull_distance)
+#define USE_HW_CLIP_DISTANCE
+#endif
+
+layout(std140) uniform genericData
+{
+    mat4 modelMatrix;
+    vec4 color;
+    vec4 clipEquation;
+    int baseMapIndex;
+    int alphaTexture;
+    int noTexturing;
+    int srgb;
+    float intensity;
+    float alphaThreshold;
+    uint clipEnabled;
+} _22;
+
+layout(std140) uniform matrixData
+{
+    mat4 modelViewMatrix;
+    mat4 projMatrix;
+} _36;
+
+out vec4 fragTexCoord;
+in vec4 vertTexCoord;
+out vec4 fragColor;
+in vec4 vertColor;
+in vec4 vertPosition;
+#ifndef USE_HW_CLIP_DISTANCE
+out float vClipDist;
+#endif
+
+void main()
+{
+    fragTexCoord = vertTexCoord;
+    fragColor = vertColor * _22.color;
+    gl_Position = (_36.projMatrix * _36.modelViewMatrix) * vertPosition;
+	float d = dot(_22.clipEquation, _22.modelMatrix * vertPosition);
+#ifdef USE_HW_CLIP_DISTANCE
+	gl_ClipDistance[0] = (_22.clipEnabled != 0u) ? d : 1.0;
+#else
+	vClipDist = (_22.clipEnabled != 0u) ? d : 1.0;
+#endif
+}
diff --git a/lib/opengl/gl/glad_es/include/glad/glad.h b/lib/opengl/gl/glad_es/include/glad/glad.h
index 550c4ad13bb..5f5cdf5d548 100644
--- a/lib/opengl/gl/glad_es/include/glad/glad.h
+++ b/lib/opengl/gl/glad_es/include/glad/glad.h
@@ -1,6 +1,6 @@
 /*
 
-    OpenGL ES loader generated by glad 0.1.36 on Wed Aug 27 15:16:54 2025.
+    OpenGL ES loader generated by glad 0.1.36 on Sat Jul  4 19:49:32 2026.
 
     Language/Generator: C/C++
     Specification: gl
@@ -10,6 +10,7 @@
         GL_EXT_buffer_storage,
         GL_EXT_clip_cull_distance,
         GL_EXT_color_buffer_float,
+        GL_EXT_depth_clamp,
         GL_EXT_disjoint_timer_query,
         GL_EXT_gpu_shader5,
         GL_EXT_multisampled_render_to_texture,
@@ -27,9 +28,9 @@
     Reproducible: False
 
     Commandline:
-        --profile="core" --api="gles2=3.2" --generator="c" --spec="gl" --extensions="GL_EXT_buffer_storage,GL_EXT_clip_cull_distance,GL_EXT_color_buffer_float,GL_EXT_disjoint_timer_query,GL_EXT_gpu_shader5,GL_EXT_multisampled_render_to_texture,GL_EXT_multisampled_render_to_texture2,GL_EXT_texture_compression_bptc,GL_EXT_texture_compression_s3tc,GL_EXT_texture_filter_anisotropic,GL_EXT_texture_format_BGRA8888,GL_KHR_debug,GL_KHR_texture_compression_astc_ldr,GL_OES_get_program_binary"
+        --profile="core" --api="gles2=3.2" --generator="c" --spec="gl" --extensions="GL_EXT_buffer_storage,GL_EXT_clip_cull_distance,GL_EXT_color_buffer_float,GL_EXT_depth_clamp,GL_EXT_disjoint_timer_query,GL_EXT_gpu_shader5,GL_EXT_multisampled_render_to_texture,GL_EXT_multisampled_render_to_texture2,GL_EXT_texture_compression_bptc,GL_EXT_texture_compression_s3tc,GL_EXT_texture_filter_anisotropic,GL_EXT_texture_format_BGRA8888,GL_KHR_debug,GL_KHR_texture_compression_astc_ldr,GL_OES_get_program_binary"
     Online:
-        https://glad.dav1d.de/#profile=core&language=c&specification=gl&loader=on&api=gles2%3D3.2&extensions=GL_EXT_buffer_storage&extensions=GL_EXT_clip_cull_distance&extensions=GL_EXT_color_buffer_float&extensions=GL_EXT_disjoint_timer_query&extensions=GL_EXT_gpu_shader5&extensions=GL_EXT_multisampled_render_to_texture&extensions=GL_EXT_multisampled_render_to_texture2&extensions=GL_EXT_texture_compression_bptc&extensions=GL_EXT_texture_compression_s3tc&extensions=GL_EXT_texture_filter_anisotropic&extensions=GL_EXT_texture_format_BGRA8888&extensions=GL_KHR_debug&extensions=GL_KHR_texture_compression_astc_ldr&extensions=GL_OES_get_program_binary
+        https://glad.dav1d.de/#profile=core&language=c&specification=gl&loader=on&api=gles2%3D3.2&extensions=GL_EXT_buffer_storage&extensions=GL_EXT_clip_cull_distance&extensions=GL_EXT_color_buffer_float&extensions=GL_EXT_depth_clamp&extensions=GL_EXT_disjoint_timer_query&extensions=GL_EXT_gpu_shader5&extensions=GL_EXT_multisampled_render_to_texture&extensions=GL_EXT_multisampled_render_to_texture2&extensions=GL_EXT_texture_compression_bptc&extensions=GL_EXT_texture_compression_s3tc&extensions=GL_EXT_texture_filter_anisotropic&extensions=GL_EXT_texture_format_BGRA8888&extensions=GL_KHR_debug&extensions=GL_KHR_texture_compression_astc_ldr&extensions=GL_OES_get_program_binary
 */
 
 
@@ -2257,6 +2258,7 @@ GLAPI PFNGLTEXSTORAGE3DMULTISAMPLEPROC glad_glTexStorage3DMultisample;
 #define GL_CLIP_DISTANCE5_EXT 0x3005
 #define GL_CLIP_DISTANCE6_EXT 0x3006
 #define GL_CLIP_DISTANCE7_EXT 0x3007
+#define GL_DEPTH_CLAMP_EXT 0x864F
 #define GL_QUERY_COUNTER_BITS_EXT 0x8864
 #define GL_CURRENT_QUERY_EXT 0x8865
 #define GL_QUERY_RESULT_EXT 0x8866
@@ -2366,6 +2368,10 @@ GLAPI int GLAD_GL_EXT_clip_cull_distance;
 #define GL_EXT_color_buffer_float 1
 GLAPI int GLAD_GL_EXT_color_buffer_float;
 #endif
+#ifndef GL_EXT_depth_clamp
+#define GL_EXT_depth_clamp 1
+GLAPI int GLAD_GL_EXT_depth_clamp;
+#endif
 #ifndef GL_EXT_disjoint_timer_query
 #define GL_EXT_disjoint_timer_query 1
 GLAPI int GLAD_GL_EXT_disjoint_timer_query;
diff --git a/lib/opengl/gl/glad_es/src/glad.c b/lib/opengl/gl/glad_es/src/glad.c
index e7bae0f7860..df24c8490ef 100644
--- a/lib/opengl/gl/glad_es/src/glad.c
+++ b/lib/opengl/gl/glad_es/src/glad.c
@@ -1,6 +1,6 @@
 /*
 
-    OpenGL ES loader generated by glad 0.1.36 on Wed Aug 27 15:16:54 2025.
+    OpenGL ES loader generated by glad 0.1.36 on Sat Jul  4 19:49:32 2026.
 
     Language/Generator: C/C++
     Specification: gl
@@ -10,6 +10,7 @@
         GL_EXT_buffer_storage,
         GL_EXT_clip_cull_distance,
         GL_EXT_color_buffer_float,
+        GL_EXT_depth_clamp,
         GL_EXT_disjoint_timer_query,
         GL_EXT_gpu_shader5,
         GL_EXT_multisampled_render_to_texture,
@@ -27,9 +28,9 @@
     Reproducible: False
 
     Commandline:
-        --profile="core" --api="gles2=3.2" --generator="c" --spec="gl" --extensions="GL_EXT_buffer_storage,GL_EXT_clip_cull_distance,GL_EXT_color_buffer_float,GL_EXT_disjoint_timer_query,GL_EXT_gpu_shader5,GL_EXT_multisampled_render_to_texture,GL_EXT_multisampled_render_to_texture2,GL_EXT_texture_compression_bptc,GL_EXT_texture_compression_s3tc,GL_EXT_texture_filter_anisotropic,GL_EXT_texture_format_BGRA8888,GL_KHR_debug,GL_KHR_texture_compression_astc_ldr,GL_OES_get_program_binary"
+        --profile="core" --api="gles2=3.2" --generator="c" --spec="gl" --extensions="GL_EXT_buffer_storage,GL_EXT_clip_cull_distance,GL_EXT_color_buffer_float,GL_EXT_depth_clamp,GL_EXT_disjoint_timer_query,GL_EXT_gpu_shader5,GL_EXT_multisampled_render_to_texture,GL_EXT_multisampled_render_to_texture2,GL_EXT_texture_compression_bptc,GL_EXT_texture_compression_s3tc,GL_EXT_texture_filter_anisotropic,GL_EXT_texture_format_BGRA8888,GL_KHR_debug,GL_KHR_texture_compression_astc_ldr,GL_OES_get_program_binary"
     Online:
-        https://glad.dav1d.de/#profile=core&language=c&specification=gl&loader=on&api=gles2%3D3.2&extensions=GL_EXT_buffer_storage&extensions=GL_EXT_clip_cull_distance&extensions=GL_EXT_color_buffer_float&extensions=GL_EXT_disjoint_timer_query&extensions=GL_EXT_gpu_shader5&extensions=GL_EXT_multisampled_render_to_texture&extensions=GL_EXT_multisampled_render_to_texture2&extensions=GL_EXT_texture_compression_bptc&extensions=GL_EXT_texture_compression_s3tc&extensions=GL_EXT_texture_filter_anisotropic&extensions=GL_EXT_texture_format_BGRA8888&extensions=GL_KHR_debug&extensions=GL_KHR_texture_compression_astc_ldr&extensions=GL_OES_get_program_binary
+        https://glad.dav1d.de/#profile=core&language=c&specification=gl&loader=on&api=gles2%3D3.2&extensions=GL_EXT_buffer_storage&extensions=GL_EXT_clip_cull_distance&extensions=GL_EXT_color_buffer_float&extensions=GL_EXT_depth_clamp&extensions=GL_EXT_disjoint_timer_query&extensions=GL_EXT_gpu_shader5&extensions=GL_EXT_multisampled_render_to_texture&extensions=GL_EXT_multisampled_render_to_texture2&extensions=GL_EXT_texture_compression_bptc&extensions=GL_EXT_texture_compression_s3tc&extensions=GL_EXT_texture_filter_anisotropic&extensions=GL_EXT_texture_format_BGRA8888&extensions=GL_KHR_debug&extensions=GL_KHR_texture_compression_astc_ldr&extensions=GL_OES_get_program_binary
 */
 
 #include <stdio.h>
@@ -501,6 +502,7 @@ PFNGLWAITSYNCPROC glad_glWaitSync = NULL;
 int GLAD_GL_EXT_buffer_storage = 0;
 int GLAD_GL_EXT_clip_cull_distance = 0;
 int GLAD_GL_EXT_color_buffer_float = 0;
+int GLAD_GL_EXT_depth_clamp = 0;
 int GLAD_GL_EXT_disjoint_timer_query = 0;
 int GLAD_GL_EXT_gpu_shader5 = 0;
 int GLAD_GL_EXT_multisampled_render_to_texture = 0;
@@ -969,6 +971,7 @@ static int find_extensionsGLES2(void) {
 	GLAD_GL_EXT_buffer_storage = has_ext("GL_EXT_buffer_storage");
 	GLAD_GL_EXT_clip_cull_distance = has_ext("GL_EXT_clip_cull_distance");
 	GLAD_GL_EXT_color_buffer_float = has_ext("GL_EXT_color_buffer_float");
+	GLAD_GL_EXT_depth_clamp = has_ext("GL_EXT_depth_clamp");
 	GLAD_GL_EXT_disjoint_timer_query = has_ext("GL_EXT_disjoint_timer_query");
 	GLAD_GL_EXT_gpu_shader5 = has_ext("GL_EXT_gpu_shader5");
 	GLAD_GL_EXT_multisampled_render_to_texture = has_ext("GL_EXT_multisampled_render_to_texture");