diff --git a/valve/glsl/default2d.glsl b/valve/glsl/default2d.glsl
new file mode 100644
index 00000000..782da22c
--- /dev/null
+++ b/valve/glsl/default2d.glsl
@@ -0,0 +1,36 @@
+!!ver 100-450
+!!samps 1
+!!cvardf gl_fake16bit=0
+
+//this shader is present for support for gles/gl3core contexts
+//it is single-texture-with-vertex-colours, and doesn't do anything special.
+//beware that a few things use this, including apparently fonts and bloom rescaling.
+//its really not meant to do anything special.
+
+varying vec2 tc;
+varying vec4 vc;
+
+#ifdef VERTEX_SHADER
+attribute vec2 v_texcoord;
+attribute vec4 v_colour;
+void main ()
+{
+	tc = v_texcoord;
+	vc = v_colour;
+	gl_Position = ftetransform();
+}
+#endif
+#ifdef FRAGMENT_SHADER
+void main ()
+{
+	vec4 f = vc;
+#ifdef PREMUL
+	f.rgb *= f.a;
+#endif
+	f *= texture2D(s_t0, tc);
+#if gl_fake16bit == 1
+	f.rgb = floor(f.rgb * vec3(32,64,32))/vec3(32,64,32);
+#endif
+	gl_FragColor = f;
+}
+#endif
diff --git a/valve/glsl/defaultfill.glsl b/valve/glsl/defaultfill.glsl
new file mode 100644
index 00000000..4b207249
--- /dev/null
+++ b/valve/glsl/defaultfill.glsl
@@ -0,0 +1,21 @@
+!!ver 100-450
+!!cvardf gl_fake16bit=0
+
+#ifdef VERTEX_SHADER
+attribute vec4 v_colour;
+varying vec4 vc;
+
+void main ()
+{
+	vc = v_colour;
+	gl_Position = ftetransform();
+}
+#endif
+
+#ifdef FRAGMENT_SHADER
+varying vec4 vc;
+void main ()
+{
+	gl_FragColor = vc;
+}
+#endif
diff --git a/valve/glsl/defaultskin.glsl b/valve/glsl/defaultskin.glsl
new file mode 100644
index 00000000..7bdf99e7
--- /dev/null
+++ b/valve/glsl/defaultskin.glsl
@@ -0,0 +1,58 @@
+!!ver 130
+!!permu FRAMEBLEND
+!!permu SKELETAL
+!!permu FOG
+!!samps diffuse
+!!cvardf gl_affinemodels=0
+!!cvardf gl_fake16bit=0
+
+#include "sys/defs.h"
+
+#if gl_affinemodels == 1
+	#define affine noperspective
+#else
+	#define affine
+#endif
+
+affine varying vec2 tex_c;
+varying vec3 light;
+
+#ifdef VERTEX_SHADER
+	#include "sys/skeletal.h"
+
+	/*float hl( vec3 normal, vec3 dir ) {
+		return ( dot( normal, dir ) * 0.5 ) + 0.5;
+	}*/
+
+	void main ()
+	{
+		vec3 n, s, t, w;
+		gl_Position = skeletaltransform_wnst(w,n,s,t);
+		tex_c = v_texcoord;
+		light = e_light_ambient + ( e_light_mul * dot( n, e_light_dir ) );
+		
+		if (light.r > 1.0f) {
+			light.r = 1.0f;
+		}
+		if (light.g > 1.0f) {
+			light.g = 1.0f;
+		}
+		if (light.b > 1.0f) {
+			light.b = 1.0f;
+		}
+	}
+#endif
+
+
+#ifdef FRAGMENT_SHADER
+	void main ()
+	{
+		vec4 diffuse_f = texture2D(s_diffuse, tex_c);
+		diffuse_f.rgb *= light;
+		diffuse_f *= e_colourident;
+#if gl_fake16bit == 1
+		diffuse_f.rgb = floor(diffuse_f.rgb * vec3(32,64,32))/vec3(32,64,32);
+#endif
+		gl_FragColor = diffuse_f * e_colourident;
+	}
+#endif
diff --git a/valve/glsl/defaultsky.glsl b/valve/glsl/defaultsky.glsl
new file mode 100644
index 00000000..f6492899
--- /dev/null
+++ b/valve/glsl/defaultsky.glsl
@@ -0,0 +1,15 @@
+!!ver 110
+
+#ifdef VERTEX_SHADER
+void main ()
+{
+	gl_Position = ftetransform();
+}
+#endif
+
+#ifdef FRAGMENT_SHADER
+void main ()
+{
+	discard;
+}
+#endif
diff --git a/valve/glsl/defaultskybox.glsl b/valve/glsl/defaultskybox.glsl
new file mode 100644
index 00000000..8292e5d1
--- /dev/null
+++ b/valve/glsl/defaultskybox.glsl
@@ -0,0 +1,27 @@
+!!ver 110
+!!permu FOG
+!!samps reflectcube
+!!cvardf gl_fake16bit=0
+
+#include "sys/defs.h"
+#include "sys/fog.h"
+
+varying vec3 pos;
+#ifdef VERTEX_SHADER
+void main ()
+{
+	pos = v_position.xyz - e_eyepos;
+	pos.y = -pos.y;
+	gl_Position = ftetransform();
+}
+#endif
+#ifdef FRAGMENT_SHADER
+void main ()
+{
+	vec4 skybox = textureCube(s_reflectcube, pos);
+#if gl_fake16bit == 1
+	skybox.rgb = floor(skybox.rgb * vec3(32,64,32))/vec3(32,64,32);
+#endif
+	gl_FragColor = vec4(fog3(skybox.rgb), 1.0);
+}
+#endif
diff --git a/valve/glsl/defaultsprite.glsl b/valve/glsl/defaultsprite.glsl
new file mode 100644
index 00000000..a13c7c80
--- /dev/null
+++ b/valve/glsl/defaultsprite.glsl
@@ -0,0 +1,42 @@
+!!permu FOG
+!!samps 1
+!!cvardf gl_fake16bit=0
+//used by both particles and sprites.
+//note the fog blending mode is all that differs from defaultadditivesprite
+
+#include "sys/fog.h"
+#ifdef VERTEX_SHADER
+attribute vec2 v_texcoord;
+attribute vec4 v_colour;
+varying vec2 tc;
+varying vec4 vc;
+void main ()
+{
+	tc = v_texcoord;
+	vc = v_colour;
+	gl_Position = ftetransform();
+}
+#endif
+#ifdef FRAGMENT_SHADER
+varying vec2 tc;
+varying vec4 vc;
+uniform vec4 e_colourident;
+uniform vec4 e_vlscale;
+void main ()
+{
+	vec4 col = texture2D(s_t0, tc);
+
+#ifdef MASK
+	if (col.a < float(MASK))
+		discard;
+#endif
+
+	col = fog4blend(col * vc * e_colourident * e_vlscale);
+
+#if gl_fake16bit == 1
+	col.rgb = floor(col.rgb * vec3(32,64,32))/vec3(32,64,32);
+#endif
+
+	gl_FragColor = col;
+}
+#endif
diff --git a/valve/glsl/defaultwall.glsl b/valve/glsl/defaultwall.glsl
new file mode 100644
index 00000000..0a47e752
--- /dev/null
+++ b/valve/glsl/defaultwall.glsl
@@ -0,0 +1,47 @@
+!!ver 110
+!!samps diffuse lightmap
+!!cvardf gl_fake16bit=0
+
+#include "sys/defs.h"
+
+varying vec2 tex_c;
+varying vec2 lm_c;
+
+#ifdef VERTEX_SHADER
+	void main ()
+	{
+		tex_c = v_texcoord;
+		lm_c = v_lmcoord;
+		gl_Position = ftetransform();
+	}
+#endif
+
+#ifdef FRAGMENT_SHADER
+	void main ( void )
+	{
+		vec4 diffuse_f = texture2D(s_diffuse, tex_c);
+		vec3 light = texture2D(s_lightmap, lm_c).rgb;
+
+		if (light.r > 1.0f) {
+			light.r = 1.0f;
+		}
+		if (light.g > 1.0f) {
+			light.g = 1.0f;
+		}
+		if (light.b > 1.0f) {
+			light.b = 1.0f;
+		}
+
+		if (diffuse_f.a < 0.5) {
+			discard;
+		}
+
+		diffuse_f.rgb *= light.rgb;
+		diffuse_f *= e_colourident;
+
+#if gl_fake16bit == 1
+		diffuse_f.rgb = floor(diffuse_f.rgb * vec3(32,64,32))/vec3(32,64,32);
+#endif
+		gl_FragColor = diffuse_f;
+	}
+#endif