added vertex warp shader and general cleanup

shaders/composite.fsh

@@ -117,7 +117,6 @@ void main() {
 		newcoord = (floor(newcoord * view) + offset) / view;
 	#endif
 	vec3 color = texture2D(gcolor, newcoord).rgb;
-    //gl_FragData[0] = vec4(vec3(color), 1.0);
 
 	float mask;
 	//vec3 ogRGB = texture2D(gcolor, texcoord).rgb;

shaders/gbuffers_entities.fsh

@@ -0,0 +1,12 @@
+#version 120
+
+varying vec2 texcoord;
+varying vec4 color;
+
+uniform sampler2D texture;
+
+void main() {
+	vec4 final = texture2D(texture, texcoord) * color;
+	gl_FragData[0] = final;
+}
+

shaders/gbuffers_entities.vsh

@@ -0,0 +1,28 @@
+#version 120
+
+varying vec2 texcoord;
+varying vec4 color;
+
+uniform mat4 gbufferModelView, gbufferModelViewInverse;
+uniform float viewWidth, viewHeight;
+
+#define pixelSize 2 // [1 2 4 8 16]
+//#define vWarp // whether or not to warp vertices
+
+void main() {
+	texcoord = (gl_TextureMatrix[0] * gl_MultiTexCoord0).xy;
+	color = gl_Color;
+
+	#ifdef vWarp
+		vec2 screen = vec2(viewWidth / pixelSize, viewHeight / pixelSize);
+		vec4 position = gbufferModelViewInverse * gl_ModelViewMatrix * gl_Vertex;
+		vec2 nearest = round(position.xy * screen) / screen;
+		position.xy = nearest;
+		//vec3 nearest = round(position.xyz * 100) / 100;
+		//position.xyz = nearest;
+		gl_Position = gl_ProjectionMatrix * gbufferModelView * position;
+	#else
+		gl_Position = ftransform();
+	#endif
+}
+

shaders/gbuffers_terrain.fsh

@@ -0,0 +1,12 @@
+#version 120
+
+varying vec2 texcoord;
+varying vec4 color;
+
+uniform sampler2D texture;
+
+void main() {
+	vec4 final = texture2D(texture, texcoord) * color;
+	gl_FragData[0] = final;
+}
+

shaders/gbuffers_terrain.vsh

@@ -0,0 +1,28 @@
+#version 120
+
+varying vec2 texcoord;
+varying vec4 color;
+
+uniform mat4 gbufferModelView, gbufferModelViewInverse;
+uniform float viewWidth, viewHeight;
+
+#define pixelSize 2 // [1 2 4 8 16]
+//#define vWarp // whether or not to warp vertices
+
+void main() {
+	texcoord = (gl_TextureMatrix[0] * gl_MultiTexCoord0).xy;
+	color = gl_Color;
+
+	#ifdef vWarp
+		vec2 screen = vec2(viewWidth / pixelSize, viewHeight / pixelSize);
+		vec4 position = gbufferModelViewInverse * gl_ModelViewMatrix * gl_Vertex;
+		vec2 nearest = round(position.xy * screen) / screen;
+		position.xy = nearest;
+		//vec3 nearest = round(position.xyz * 100) / 100;
+		//position.xyz = nearest;
+		gl_Position = gl_ProjectionMatrix * gbufferModelView * position;
+	#else
+		gl_Position = ftransform();
+	#endif
+}
+

shaders/lang/en_US.lang

@@ -15,5 +15,6 @@ option.valSteps=Value Depth
 
 screen.PSX=PSX
 option.vWarp=Vertex Warping
-option.tWarp=Texture Warping
+option.tWarp=Affine Textures
+option.tWarp.comment=Emulates affine texture mapping responsible for warping textures on the PSX
 

shaders/shaders.properties

@@ -1,7 +1,7 @@
 sliders=pixelSize hueSteps satSteps valSteps rgbSteps
 
-screen=pixelSize [COLOR] [PSX]
+screen=pixelSize <empty> [COLOR] [PSX]
 
-screen.COLOR=RGB rgbSteps pixelSize hueSteps satSteps valSteps
+screen.COLOR=RGB rgbSteps hueSteps satSteps valSteps
-screen.PSX=<empty>
+screen.PSX=vWarp