updated README

README.md

@@ -9,6 +9,7 @@ expanding its concept to other "retro" graphic effects.
 - Dithering
 - Downscaling
 - PSX Vertex Warping
+- PSX Texture Warping
 
 ## Acknowledgements
 

shaders/gbuffers_basic.vsh

@@ -1,5 +1,9 @@
 #version 120
 
+#define pixelSize 2 // [1 2 4 8 16]
+#define vWarp 0 // psx vertex warp [0 1 2 4 8 16 32]
+//#define tWarp // psx texture warp
+
 varying vec2 texcoord;
 varying vec4 color;
 varying vec2 lmcoord;
@@ -7,9 +11,6 @@ varying vec2 lmcoord;
 uniform mat4 gbufferModelView, gbufferModelViewInverse;
 uniform float viewWidth, viewHeight;
 
-#define pixelSize 2 // [1 2 4 8 16]
-#define vWarp 0 // psx vertex warp [0 1 2 4 8 16 32]
-
 void main() {
 	texcoord = (gl_TextureMatrix[0] * gl_MultiTexCoord0).xy;
 	lmcoord = (gl_TextureMatrix[1] * gl_MultiTexCoord1).xy;
@@ -25,5 +26,9 @@ void main() {
 	#else
 		gl_Position = ftransform();
 	#endif
+
+	#ifdef tWarp
+		gl_Position /= abs(gl_Position.w);
+	#endif
 }
 

shaders/lang/en_US.lang

@@ -26,6 +26,6 @@ value.vWarp.4=Medium (4x)
 value.vWarp.8=High (8x)
 value.vWarp.16=Extreme (16x)
 value.vWarp.32=Silly (32x)
-option.tWarp=Affine Textures
+option.tWarp=Texture Warping
 option.tWarp.comment=Emulates affine texture mapping responsible for warping textures on the PSX
 

shaders/shaders.properties

@@ -3,5 +3,5 @@ sliders=pixelSize hueSteps satSteps valSteps rgbSteps vWarp
 screen=pixelSize <empty> [COLOR] [PSX]
 
 screen.COLOR=colorMode dithering rgbSteps <empty> hueSteps satSteps valSteps
-screen.PSX=vWarp
+screen.PSX=vWarp tWarp